[PATCH 0/6] writeback: moving expire targets for background/kupdate works v2

[PATCH 0/6] writeback: moving expire targets for background/kupdate works v2

[Wu Fengguang]

Andrew,

This aims to reduce possible pageout() calls by making the flusher
concentrate a bit more on old/expired dirty inodes.

Rationals and benchmark numbers are added in patches 05, 06.

It runs fine on simple workloads over ext3/4, xfs, btrfs and NFS.

code refactor
	[PATCH 1/6] writeback: pass writeback_control down to move_expired_inodes()

loop condition fixes
	[PATCH 2/6] writeback: introduce writeback_control.inodes_cleaned
	[PATCH 3/6] writeback: try more writeback as long as something was written

make dirty expire time a moving target
	[PATCH 4/6] writeback: the kupdate expire timestamp should be a moving target
	[PATCH 5/6] writeback: sync expired inodes first in background writeback

consistent requeue policy
it's not an integral part of this patchset, however do depends on patch 03
	[PATCH 6/6] writeback: refill b_io iff empty


Thanks,
Fengguang

[PATCH 1/6] writeback: pass writeback_control down to move_expired_inodes()

[Wu Fengguang]

[-- Attachment #1: writeback-pass-wbc-to-queue_io.patch --]
[-- Type: text/plain, Size: 2552 bytes --]

No behavior change. This will add debug visibility to the code, for
example, to dump the wbc contents when kprobing queue_io().

Acked-by: Jan Kara <jack@suse.cz>
Acked-by: Mel Gorman <mel@csn.ul.ie>
Signed-off-by: Wu Fengguang <fengguang.wu@intel.com>
---
 fs/fs-writeback.c |   16 ++++++++--------
 1 file changed, 8 insertions(+), 8 deletions(-)

--- linux-next.orig/fs/fs-writeback.c	2011-04-19 10:18:17.000000000 +0800
+++ linux-next/fs/fs-writeback.c	2011-04-19 10:18:28.000000000 +0800
@@ -251,8 +251,8 @@ static bool inode_dirtied_after(struct i
  * Move expired dirty inodes from @delaying_queue to @dispatch_queue.
  */
 static void move_expired_inodes(struct list_head *delaying_queue,
-			       struct list_head *dispatch_queue,
-				unsigned long *older_than_this)
+				struct list_head *dispatch_queue,
+				struct writeback_control *wbc)
 {
 	LIST_HEAD(tmp);
 	struct list_head *pos, *node;
@@ -262,8 +262,8 @@ static void move_expired_inodes(struct l
 
 	while (!list_empty(delaying_queue)) {
 		inode = wb_inode(delaying_queue->prev);
-		if (older_than_this &&
-		    inode_dirtied_after(inode, *older_than_this))
+		if (wbc->older_than_this &&
+		    inode_dirtied_after(inode, *wbc->older_than_this))
 			break;
 		if (sb && sb != inode->i_sb)
 			do_sb_sort = 1;
@@ -299,11 +299,11 @@ static void move_expired_inodes(struct l
  *                                           |
  *                                           +--> dequeue for IO
  */
-static void queue_io(struct bdi_writeback *wb, unsigned long *older_than_this)
+static void queue_io(struct bdi_writeback *wb, struct writeback_control *wbc)
 {
 	assert_spin_locked(&inode_wb_list_lock);
 	list_splice_init(&wb->b_more_io, &wb->b_io);
-	move_expired_inodes(&wb->b_dirty, &wb->b_io, older_than_this);
+	move_expired_inodes(&wb->b_dirty, &wb->b_io, wbc);
 }
 
 static int write_inode(struct inode *inode, struct writeback_control *wbc)
@@ -579,7 +579,7 @@ void writeback_inodes_wb(struct bdi_writ
 		wbc->wb_start = jiffies; /* livelock avoidance */
 	spin_lock(&inode_wb_list_lock);
 	if (!wbc->for_kupdate || list_empty(&wb->b_io))
-		queue_io(wb, wbc->older_than_this);
+		queue_io(wb, wbc);
 
 	while (!list_empty(&wb->b_io)) {
 		struct inode *inode = wb_inode(wb->b_io.prev);
@@ -606,7 +606,7 @@ static void __writeback_inodes_sb(struct
 
 	spin_lock(&inode_wb_list_lock);
 	if (!wbc->for_kupdate || list_empty(&wb->b_io))
-		queue_io(wb, wbc->older_than_this);
+		queue_io(wb, wbc);
 	writeback_sb_inodes(sb, wb, wbc, true);
 	spin_unlock(&inode_wb_list_lock);
 }

Re: [PATCH 1/6] writeback: pass writeback_control down to move_expired_inodes()

[Christoph Hellwig]

On Wed, Apr 20, 2011 at 04:03:37PM +0800, Wu Fengguang wrote:
> No behavior change. This will add debug visibility to the code, for
> example, to dump the wbc contents when kprobing queue_io().

I don't think it's a good idea.  The writeback_control should move
back to just controlling per-inode writeback and not be passed to
more routines dealing with high-level writeback.

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Re: [PATCH 1/6] writeback: pass writeback_control down to move_expired_inodes()

[Wu Fengguang]

On Wed, May 04, 2011 at 07:04:32PM +0800, Christoph Hellwig wrote:
> On Wed, Apr 20, 2011 at 04:03:37PM +0800, Wu Fengguang wrote:
> > No behavior change. This will add debug visibility to the code, for
> > example, to dump the wbc contents when kprobing queue_io().
> 
> I don't think it's a good idea.  The writeback_control should move
> back to just controlling per-inode writeback and not be passed to
> more routines dealing with high-level writeback.

Good point. I can do without this patch.

Thanks,
Fengguang

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[PATCH 2/6] writeback: introduce writeback_control.inodes_cleaned

[Wu Fengguang]

[-- Attachment #1: writeback-inodes_written.patch --]
[-- Type: text/plain, Size: 2622 bytes --]

The flusher works on dirty inodes in batches, and may quit prematurely
if the batch of inodes happen to be metadata-only dirtied: in this case
wbc->nr_to_write won't be decreased at all, which stands for "no pages
written" but also mis-interpreted as "no progress".

So introduce writeback_control.inodes_cleaned to count the inodes get
cleaned.  A non-zero value means there are some progress on writeback,
in which case more writeback can be tried.

about v1: The initial version was to count successful ->write_inode()
calls.  However it leads to busy loops for sync() over NFS, because NFS
ridiculously returns 0 (success) while at the same time redirties the
inode.  The NFS case can be trivially fixed, however there may be more
hidden bugs in other filesystems..

Acked-by: Jan Kara <jack@suse.cz>
Acked-by: Mel Gorman <mel@csn.ul.ie>
Signed-off-by: Wu Fengguang <fengguang.wu@intel.com>
---
 fs/fs-writeback.c         |    4 ++++
 include/linux/writeback.h |    1 +
 2 files changed, 5 insertions(+)

--- linux-next.orig/fs/fs-writeback.c	2011-04-20 11:50:10.000000000 +0800
+++ linux-next/fs/fs-writeback.c	2011-04-20 11:53:35.000000000 +0800
@@ -454,6 +454,7 @@ writeback_single_inode(struct inode *ino
 			 * No need to add it back to the LRU.
 			 */
 			list_del_init(&inode->i_wb_list);
+			wbc->inodes_cleaned++;
 		}
 	}
 	inode_sync_complete(inode);
@@ -716,6 +717,7 @@ static long wb_writeback(struct bdi_writ
 		wbc.more_io = 0;
 		wbc.nr_to_write = write_chunk;
 		wbc.pages_skipped = 0;
+		wbc.inodes_cleaned = 0;
 
 		trace_wbc_writeback_start(&wbc, wb->bdi);
 		if (work->sb)
@@ -732,6 +734,8 @@ static long wb_writeback(struct bdi_writ
 		 */
 		if (wbc.nr_to_write <= 0)
 			continue;
+		if (wbc.inodes_cleaned)
+			continue;
 		/*
 		 * Didn't write everything and we don't have more IO, bail
 		 */
--- linux-next.orig/include/linux/writeback.h	2011-04-20 10:30:29.000000000 +0800
+++ linux-next/include/linux/writeback.h	2011-04-20 11:53:35.000000000 +0800
@@ -34,6 +34,7 @@ struct writeback_control {
 	long nr_to_write;		/* Write this many pages, and decrement
 					   this for each page written */
 	long pages_skipped;		/* Pages which were not written */
+	long inodes_cleaned;		/* # of inodes cleaned */
 
 	/*
 	 * For a_ops->writepages(): is start or end are non-zero then this is


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Re: [PATCH 2/6] writeback: introduce writeback_control.inodes_cleaned

[Christoph Hellwig]

Same here - this has nothing to do with actual page writeback and really
should stay internal to fs/fs-writeback.c

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Re: [PATCH 2/6] writeback: introduce writeback_control.inodes_cleaned

[Wu Fengguang]

On Wed, May 04, 2011 at 07:05:00PM +0800, Christoph Hellwig wrote:
> Same here - this has nothing to do with actual page writeback and really
> should stay internal to fs/fs-writeback.c

OK, I'll check how to constrain writeback_control to the minimal scope.

Thanks,
Fengguang

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Re: [PATCH 2/6] writeback: introduce writeback_control.inodes_cleaned

[Christoph Hellwig]

On Wed, May 04, 2011 at 07:11:30PM +0800, Wu Fengguang wrote:
> On Wed, May 04, 2011 at 07:05:00PM +0800, Christoph Hellwig wrote:
> > Same here - this has nothing to do with actual page writeback and really
> > should stay internal to fs/fs-writeback.c
> 
> OK, I'll check how to constrain writeback_control to the minimal scope.

The basic idea would be to pass the struct wb_writeback_work all the
way down to writeback_sb_inodes, and initialize the struct writeback_control
there.  This requires adding a few more fields like more_io and
older_than_this to struct wb_writeback_work, and redoing a lot of the
tracing, but it immediately clean things up, e.g. suddently
wbc.nr_to_write vs work->nr_pages starts to make sense, and instead
of saving and restoring pages_skipped in writeback_sb_inodes it can
always start with a clean zero value.

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Re: [PATCH 2/6] writeback: introduce writeback_control.inodes_cleaned

[Wu Fengguang]

On Wed, May 04, 2011 at 07:16:47PM +0800, Christoph Hellwig wrote:
> On Wed, May 04, 2011 at 07:11:30PM +0800, Wu Fengguang wrote:
> > On Wed, May 04, 2011 at 07:05:00PM +0800, Christoph Hellwig wrote:
> > > Same here - this has nothing to do with actual page writeback and really
> > > should stay internal to fs/fs-writeback.c
> > 
> > OK, I'll check how to constrain writeback_control to the minimal scope.
> 
> The basic idea would be to pass the struct wb_writeback_work all the
> way down to writeback_sb_inodes, and initialize the struct writeback_control
> there.

OK.

> This requires adding a few more fields like more_io and

We can in fact just kill more_io and test list_empty(b_more_io)
instead.

> older_than_this to struct wb_writeback_work, and redoing a lot of the
> tracing,

Yeah, older_than_this must still be set in wb_writeback().
The two trace points could be removed for now.

> but it immediately clean things up, e.g. suddently
> wbc.nr_to_write vs work->nr_pages starts to make sense, and instead
> of saving and restoring pages_skipped in writeback_sb_inodes it can
> always start with a clean zero value.

That's right.

Thanks,
Fengguang

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[PATCH 3/6] writeback: try more writeback as long as something was written

[Wu Fengguang]

[-- Attachment #1: writeback-background-retry.patch --]
[-- Type: text/plain, Size: 3502 bytes --]

writeback_inodes_wb()/__writeback_inodes_sb() are not aggressive in that
they only populate possibly a subset of eligible inodes into b_io at
entrance time. When the queued set of inodes are all synced, they just
return, possibly with all queued inode pages written but still
wbc.nr_to_write > 0.

For kupdate and background writeback, there may be more eligible inodes
sitting in b_dirty when the current set of b_io inodes are completed. So
it is necessary to try another round of writeback as long as we made some
progress in this round. When there are no more eligible inodes, no more
inodes will be enqueued in queue_io(), hence nothing could/will be
synced and we may safely bail.

For example, imagine 100 inodes

        i0, i1, i2, ..., i90, i91, i99

At queue_io() time, i90-i99 happen to be expired and moved to s_io for
IO. When finished successfully, if their total size is less than
MAX_WRITEBACK_PAGES, nr_to_write will be > 0. Then wb_writeback() will
quit the background work (w/o this patch) while it's still over
background threshold. This will be a fairly normal/frequent case I guess.

Jan raised the concern

	I'm just afraid that in some pathological cases this could
	result in bad writeback pattern - like if there is some process
	which manages to dirty just a few pages while we are doing
	writeout, this looping could result in writing just a few pages
	in each round which is bad for fragmentation etc.

However it requires really strong timing to make that to (continuously)
happen.  In practice it's very hard to produce such a pattern even if
there is such a possibility in theory. I actually tried to write 1 page
per 1ms with this command

	write-and-fsync -n10000 -S 1000 -c 4096 /fs/test

and do sync(1) at the same time. The sync completes quickly on ext4,
xfs, btrfs. The readers could try other write-and-sleep patterns and
check if it can block sync for longer time.

CC: Jan Kara <jack@suse.cz>
Signed-off-by: Wu Fengguang <fengguang.wu@intel.com>
---
 fs/fs-writeback.c |   16 ++++++++--------
 1 file changed, 8 insertions(+), 8 deletions(-)

--- linux-next.orig/fs/fs-writeback.c	2011-04-20 11:53:35.000000000 +0800
+++ linux-next/fs/fs-writeback.c	2011-04-20 11:53:37.000000000 +0800
@@ -730,23 +730,23 @@ static long wb_writeback(struct bdi_writ
 		wrote += write_chunk - wbc.nr_to_write;
 
 		/*
-		 * If we consumed everything, see if we have more
+		 * Did we write something? Try for more
+		 *
+		 * Dirty inodes are moved to b_io for writeback in batches.
+		 * The completion of the current batch does not necessarily
+		 * mean the overall work is done. So we keep looping as long
+		 * as made some progress on cleaning pages or inodes.
 		 */
-		if (wbc.nr_to_write <= 0)
+		if (wbc.nr_to_write < write_chunk)
 			continue;
 		if (wbc.inodes_cleaned)
 			continue;
 		/*
-		 * Didn't write everything and we don't have more IO, bail
+		 * No more inodes for IO, bail
 		 */
 		if (!wbc.more_io)
 			break;
 		/*
-		 * Did we write something? Try for more
-		 */
-		if (wbc.nr_to_write < write_chunk)
-			continue;
-		/*
 		 * Nothing written. Wait for some inode to
 		 * become available for writeback. Otherwise
 		 * we'll just busyloop.


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[PATCH 4/6] writeback: the kupdate expire timestamp should be a moving target

[Wu Fengguang]

[-- Attachment #1: writeback-moving-dirty-expired.patch --]
[-- Type: text/plain, Size: 2039 bytes --]

Dynamically compute the dirty expire timestamp at queue_io() time.

writeback_control.older_than_this used to be determined at entrance to
the kupdate writeback work. This _static_ timestamp may go stale if the
kupdate work runs on and on. The flusher may then stuck with some old
busy inodes, never considering newly expired inodes thereafter.

This has two possible problems:

- It is unfair for a large dirty inode to delay (for a long time) the
  writeback of small dirty inodes.

- As time goes by, the large and busy dirty inode may contain only
  _freshly_ dirtied pages. Ignoring newly expired dirty inodes risks
  delaying the expired dirty pages to the end of LRU lists, triggering
  the evil pageout(). Nevertheless this patch merely addresses part
  of the problem.

v2: keep policy changes inside wb_writeback() and keep the
wbc.older_than_this visibility as suggested by Dave.

CC: Dave Chinner <david@fromorbit.com>
Acked-by: Jan Kara <jack@suse.cz>
Acked-by: Mel Gorman <mel@csn.ul.ie>
Signed-off-by: Itaru Kitayama <kitayama@cl.bb4u.ne.jp>
Signed-off-by: Wu Fengguang <fengguang.wu@intel.com>
---
 fs/fs-writeback.c |   11 ++++++-----
 1 file changed, 6 insertions(+), 5 deletions(-)

--- linux-next.orig/fs/fs-writeback.c	2011-04-20 12:02:57.000000000 +0800
+++ linux-next/fs/fs-writeback.c	2011-04-20 12:03:23.000000000 +0800
@@ -661,11 +661,6 @@ static long wb_writeback(struct bdi_writ
 	long write_chunk;
 	struct inode *inode;
 
-	if (wbc.for_kupdate) {
-		wbc.older_than_this = &oldest_jif;
-		oldest_jif = jiffies -
-				msecs_to_jiffies(dirty_expire_interval * 10);
-	}
 	if (!wbc.range_cyclic) {
 		wbc.range_start = 0;
 		wbc.range_end = LLONG_MAX;
@@ -714,6 +709,12 @@ static long wb_writeback(struct bdi_writ
 		if (work->for_background && !over_bground_thresh())
 			break;
 
+		if (work->for_kupdate) {
+			oldest_jif = jiffies -
+				msecs_to_jiffies(dirty_expire_interval * 10);
+			wbc.older_than_this = &oldest_jif;
+		}
+
 		wbc.more_io = 0;
 		wbc.nr_to_write = write_chunk;
 		wbc.pages_skipped = 0;

[PATCH 5/6] writeback: sync expired inodes first in background writeback

[Wu Fengguang]

[-- Attachment #1: writeback-moving-dirty-expired-background.patch --]
[-- Type: text/plain, Size: 3583 bytes --]

A background flush work may run for ever. So it's reasonable for it to
mimic the kupdate behavior of syncing old/expired inodes first.

At each queue_io() time, first try enqueuing only newly expired inodes.
If there are zero expired inodes to work with, then relax the rule and
enqueue all dirty inodes.

This will help reduce the number of dirty pages encountered by page
reclaim, eg. the pageout() calls. Normally older inodes contain older
dirty pages, which are more close to the end of the LRU lists. So
syncing older inodes first helps reducing the dirty pages reached by
the page reclaim code.

More background: as Mel put it, "it makes sense to write old pages first
to reduce the chances page reclaim is initiating IO."

Rik also presented the situation with a graph:

LRU head                                 [*] dirty page
[                          *              *      * *  *  * * * * * *]

Ideally, most dirty pages should lie close to the LRU tail instead of
LRU head. That requires the flusher thread to sync old/expired inodes
first (as there are obvious correlations between inode age and page
age), and to give fair opportunities to newly expired inodes rather
than sticking with some large eldest inodes (as larger inodes have
weaker correlations in the inode<=>page ages).

This patch helps the flusher to meet both the above requirements.

Side effects: it might reduce the batch size and hence reduce
inode_wb_list_lock hold time, but in turn make the cluster-by-partition
logic in the same function less effective on reducing disk seeks.

v2: keep policy changes inside wb_writeback() and keep the
wbc.older_than_this visibility as suggested by Dave.

CC: Dave Chinner <david@fromorbit.com>
CC: Jan Kara <jack@suse.cz>
CC: Rik van Riel <riel@redhat.com>
Acked-by: Mel Gorman <mel@csn.ul.ie>
Signed-off-by: Wu Fengguang <fengguang.wu@intel.com>
---
 fs/fs-writeback.c |   16 +++++++++++++++-
 1 file changed, 15 insertions(+), 1 deletion(-)

--- linux-next.orig/fs/fs-writeback.c	2011-04-20 12:03:50.000000000 +0800
+++ linux-next/fs/fs-writeback.c	2011-04-20 12:03:54.000000000 +0800
@@ -709,7 +709,7 @@ static long wb_writeback(struct bdi_writ
 		if (work->for_background && !over_bground_thresh())
 			break;
 
-		if (work->for_kupdate) {
+		if (work->for_kupdate || work->for_background) {
 			oldest_jif = jiffies -
 				msecs_to_jiffies(dirty_expire_interval * 10);
 			wbc.older_than_this = &oldest_jif;
@@ -720,6 +720,7 @@ static long wb_writeback(struct bdi_writ
 		wbc.pages_skipped = 0;
 		wbc.inodes_cleaned = 0;
 
+retry:
 		trace_wbc_writeback_start(&wbc, wb->bdi);
 		if (work->sb)
 			__writeback_inodes_sb(work->sb, wb, &wbc);
@@ -743,6 +744,19 @@ static long wb_writeback(struct bdi_writ
 		if (wbc.inodes_cleaned)
 			continue;
 		/*
+		 * background writeback will start with expired inodes, and
+		 * if none is found, fallback to all inodes. This order helps
+		 * reduce the number of dirty pages reaching the end of LRU
+		 * lists and cause trouble to the page reclaim.
+		 */
+		if (work->for_background &&
+		    wbc.older_than_this &&
+		    list_empty(&wb->b_io) &&
+		    list_empty(&wb->b_more_io)) {
+			wbc.older_than_this = NULL;
+			goto retry;
+		}
+		/*
 		 * No more inodes for IO, bail
 		 */
 		if (!wbc.more_io)


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Re: [PATCH 5/6] writeback: sync expired inodes first in background writeback

[Andrew Morton]

On Wed, 20 Apr 2011 16:03:41 +0800
Wu Fengguang <fengguang.wu@intel.com> wrote:

> A background flush work may run for ever. So it's reasonable for it to
> mimic the kupdate behavior of syncing old/expired inodes first.
> 
> At each queue_io() time, first try enqueuing only newly expired inodes.
> If there are zero expired inodes to work with, then relax the rule and
> enqueue all dirty inodes.
> 
> This will help reduce the number of dirty pages encountered by page
> reclaim, eg. the pageout() calls. Normally older inodes contain older
> dirty pages, which are more close to the end of the LRU lists. So
> syncing older inodes first helps reducing the dirty pages reached by
> the page reclaim code.
> 
> More background: as Mel put it, "it makes sense to write old pages first
> to reduce the chances page reclaim is initiating IO."
> 
> Rik also presented the situation with a graph:
> 
> LRU head                                 [*] dirty page
> [                          *              *      * *  *  * * * * * *]
> 
> Ideally, most dirty pages should lie close to the LRU tail instead of
> LRU head. That requires the flusher thread to sync old/expired inodes
> first (as there are obvious correlations between inode age and page
> age), and to give fair opportunities to newly expired inodes rather
> than sticking with some large eldest inodes (as larger inodes have
> weaker correlations in the inode<=>page ages).
> 
> This patch helps the flusher to meet both the above requirements.
> 
> Side effects: it might reduce the batch size and hence reduce
> inode_wb_list_lock hold time, but in turn make the cluster-by-partition
> logic in the same function less effective on reducing disk seeks.

One of the many requirements for writeback is that if userspace is
continually dirtying pages in a particular file, that shouldn't cause
the kupdate function to concentrate on that file's newly-dirtied pages,
neglecting pages from other files which were less-recently dirtied. 
(and dirty nodes, etc).

And the background writeback function and fsync() and msync() and
everything else shouldn't cause starvation of expired pages, either.  I
guess you could say that the expired dirty pages become the
highest-priority writeback item.


Are you testing for this failure scenario?  If so, can you briefly
describe the testing?

It would be hlpeful if you could explain how the current code
implements this requirement?

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Re: [PATCH 5/6] writeback: sync expired inodes first in background writeback

[Wu Fengguang]

On Thu, Apr 21, 2011 at 07:40:05AM +0800, Andrew Morton wrote:
> On Wed, 20 Apr 2011 16:03:41 +0800
> Wu Fengguang <fengguang.wu@intel.com> wrote:
> 
> > A background flush work may run for ever. So it's reasonable for it to
> > mimic the kupdate behavior of syncing old/expired inodes first.
> > 
> > At each queue_io() time, first try enqueuing only newly expired inodes.
> > If there are zero expired inodes to work with, then relax the rule and
> > enqueue all dirty inodes.
> > 
> > This will help reduce the number of dirty pages encountered by page
> > reclaim, eg. the pageout() calls. Normally older inodes contain older
> > dirty pages, which are more close to the end of the LRU lists. So
> > syncing older inodes first helps reducing the dirty pages reached by
> > the page reclaim code.
> > 
> > More background: as Mel put it, "it makes sense to write old pages first
> > to reduce the chances page reclaim is initiating IO."
> > 
> > Rik also presented the situation with a graph:
> > 
> > LRU head                                 [*] dirty page
> > [                          *              *      * *  *  * * * * * *]
> > 
> > Ideally, most dirty pages should lie close to the LRU tail instead of
> > LRU head. That requires the flusher thread to sync old/expired inodes
> > first (as there are obvious correlations between inode age and page
> > age), and to give fair opportunities to newly expired inodes rather
> > than sticking with some large eldest inodes (as larger inodes have
> > weaker correlations in the inode<=>page ages).
> > 
> > This patch helps the flusher to meet both the above requirements.
> > 
> > Side effects: it might reduce the batch size and hence reduce
> > inode_wb_list_lock hold time, but in turn make the cluster-by-partition
> > logic in the same function less effective on reducing disk seeks.
> 
> One of the many requirements for writeback is that if userspace is
> continually dirtying pages in a particular file, that shouldn't cause
> the kupdate function to concentrate on that file's newly-dirtied pages,
> neglecting pages from other files which were less-recently dirtied. 
> (and dirty nodes, etc).

Right. This patch will exclude unexpired inodes from background work,
as long as there are expired ones to work on. Which hopefully will
provide better data safety in normal cases. After all the flusher
is based on inodes and this is the most sane order it can take.

Given that the unexpired inodes will eventually expire after 30s, it
won't exclude any inode from entering b_io for long time.

When there is a continually dirtied inode, let's check its internal
pages writeback order first, and then examine the inter-inode order.

a) it's a small file (less than the write chunk size)

No problem at all, it will be fairly redirty_tail()ed after all the
freshly dirtied inodes, waiting for the next turn

b) it's a large file, random writes

No optimal solution at all, because it will contain both old and new
pages all over the places.

c) it's a large file, sequentially written to

Old pages will be served first (if not, we'll cycle around sooner or
later to behind the write stream), we will be rightfully concentrating
on old pages

d) it's a large file, reversely written to

This is rare. We'll work through a series of segments, eg. pages
90000-100000, pages 70000-80000, pages 60000-70000. Within each
segment we'll work on youngest pages first..

Except for (d) there is no way we may wrongly keep concentrating on
the newly-dirtied pages _inside_ one file.

As for _inter_ inode fairness, the last patch describes the scheme:

: A b_io refill will setup a _fixed_ work set with all currently eligible
: inodes and start a new round of walking through b_io.  The "fixed" work
: set means no new inodes will be added to the work set during the walk.
: Only when a complete walk over b_io is done, new inodes that are eligible
: at the time will be enqueued and the walk will be started over.
: 
: This procedure provides fairness among the inodes because it guarantees
: that each inode will be synced once and only once in each round.  So all
: inodes will be free from starvation.

In long turn, each inode will be honored a chance to write write_chunk
pages _in fair turn_. However there is an implicit priority: the
larger write_chunk, the more a large file can effectively write than
small files.

> And the background writeback function and fsync() and msync() and
> everything else shouldn't cause starvation of expired pages, either.  I
> guess you could say that the expired dirty pages become the
> highest-priority writeback item.

fsync() and msync() is expected to finish in bounded time, since they
work on a fixed set of PAGECACHE_TAG_TOWRITE pages. So won't be
starved by them. If there are too many fsync()s, we have the more
serious problem of the whole system coming to a halt.

Inside the background work, inter-inode fairness is guaranteed as
described above.

> Are you testing for this failure scenario?  If so, can you briefly
> describe the testing?

Not yet.. But one possible scheme is to record the dirty time of each
page in a debug kernel and expose them to user space. Then we can run
any kind of workloads, and in the mean while run a background scanner
to collect and report the distribution of dirty page ages.

Does it sound too heavy weight? Or we may start by reporting the dirty
inode age first. To maintain a mapping->writeback_index_wrapped_when and
a mapping->pages_dirtied_when to follow it (or just reuse/reset
mapping->dirtied_when?). The former will be reset to jiffies on each
full scan of the pages. range_whole=1 scan can maintain its start time
in a local variable. Then we get an estimation "what's the max
possible dirty page age this inode has?". There will sure be redirtied
pages though..

> It would be hlpeful if you could explain how the current code
> implements this requirement?

See above descriptions.

Thanks,
Fengguang

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Re: [PATCH 5/6] writeback: sync expired inodes first in background writeback

[Wu Fengguang]

> > Are you testing for this failure scenario?  If so, can you briefly
> > describe the testing?
> 
> Not yet.. But one possible scheme is to record the dirty time of each
> page in a debug kernel and expose them to user space. Then we can run
> any kind of workloads, and in the mean while run a background scanner
> to collect and report the distribution of dirty page ages.
> 
> Does it sound too heavy weight? Or we may start by reporting the dirty
> inode age first. To maintain a mapping->writeback_index_wrapped_when and
> a mapping->pages_dirtied_when to follow it (or just reuse/reset
> mapping->dirtied_when?). The former will be reset to jiffies on each
> full scan of the pages. range_whole=1 scan can maintain its start time
> in a local variable. Then we get an estimation "what's the max
> possible dirty page age this inode has?". There will sure be redirtied
> pages though..

Hmm the lighter scheme will fail the common "active sequential write
to large file" case, because the full scan will never manage to come
to an end..

Thanks,
Fengguang

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Re: [PATCH 5/6] writeback: sync expired inodes first in background writeback

[Wu Fengguang]

> One of the many requirements for writeback is that if userspace is
> continually dirtying pages in a particular file, that shouldn't cause
> the kupdate function to concentrate on that file's newly-dirtied pages,
> neglecting pages from other files which were less-recently dirtied. 
> (and dirty nodes, etc).

Sadly I do find the old pages that the flusher never get a chance to
catch and write them out.

In the below case, if the task dirties pages fast enough at the end of
file, writeback_index will never get a chance to wrap back. There may
be various variations of this case.

file head
[          ***                        ==>***************]==>
           old pages          writeback_index            fresh dirties

Ironically the current kernel relies on pageout() to catch these
old pages, which is not only inefficient, but also not reliable.
If a full LRU walk takes an hour, the old pages may stay dirtied
for an hour.

We may have to do (conditional) tagged ->writepages to safeguard users
from losing data he'd expect to be written hours ago.

Thanks,
Fengguang

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Re: [PATCH 5/6] writeback: sync expired inodes first in background writeback

[Jan Kara]

On Sun 24-04-11 11:15:31, Wu Fengguang wrote:
> > One of the many requirements for writeback is that if userspace is
> > continually dirtying pages in a particular file, that shouldn't cause
> > the kupdate function to concentrate on that file's newly-dirtied pages,
> > neglecting pages from other files which were less-recently dirtied. 
> > (and dirty nodes, etc).
> 
> Sadly I do find the old pages that the flusher never get a chance to
> catch and write them out.
  What kind of load do you use?

> In the below case, if the task dirties pages fast enough at the end of
> file, writeback_index will never get a chance to wrap back. There may
> be various variations of this case.
> 
> file head
> [          ***                        ==>***************]==>
>            old pages          writeback_index            fresh dirties
> 
> Ironically the current kernel relies on pageout() to catch these
> old pages, which is not only inefficient, but also not reliable.
> If a full LRU walk takes an hour, the old pages may stay dirtied
> for an hour.
  Well, the kupdate behavior has always been just a best-effort thing. We
always tried to handle well common cases but didn't try to solve all of
them. Unless we want to track dirty-age of every page (which we don't
want because it's too expensive), there is really no way to make syncing
of old pages 100% working for all the cases unless we do data-integrity
type of writeback for the whole inode - but that could create new problems
with stalling other files for too long I suspect.

> We may have to do (conditional) tagged ->writepages to safeguard users
> from losing data he'd expect to be written hours ago.
  Well, if the file is continuously written (and in your case it must be
even continuosly grown) I'd be content if we handle well the common case of
linear append (that happens for log files etc.). If we can do well for more
cases, even better but I'd be cautious not to disrupt some other more
common cases.

								Honza
-- 
Jan Kara <jack@suse.cz>
SUSE Labs, CR

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Re: [PATCH 5/6] writeback: sync expired inodes first in background writeback

[Wu Fengguang]

On Tue, Apr 26, 2011 at 08:17:51PM +0800, Jan Kara wrote:
> On Sun 24-04-11 11:15:31, Wu Fengguang wrote:
> > > One of the many requirements for writeback is that if userspace is
> > > continually dirtying pages in a particular file, that shouldn't cause
> > > the kupdate function to concentrate on that file's newly-dirtied pages,
> > > neglecting pages from other files which were less-recently dirtied. 
> > > (and dirty nodes, etc).
> > 
> > Sadly I do find the old pages that the flusher never get a chance to
> > catch and write them out.
>   What kind of load do you use?

Sorry I was just thinking about it and then got a _theoretic_ case.

> > In the below case, if the task dirties pages fast enough at the end of
> > file, writeback_index will never get a chance to wrap back. There may
> > be various variations of this case.
> > 
> > file head
> > [          ***                        ==>***************]==>
> >            old pages          writeback_index            fresh dirties
> > 
> > Ironically the current kernel relies on pageout() to catch these
> > old pages, which is not only inefficient, but also not reliable.
> > If a full LRU walk takes an hour, the old pages may stay dirtied
> > for an hour.
>   Well, the kupdate behavior has always been just a best-effort thing. We
> always tried to handle well common cases but didn't try to solve all of
> them. Unless we want to track dirty-age of every page (which we don't
> want because it's too expensive), there is really no way to make syncing
> of old pages 100% working for all the cases unless we do data-integrity
> type of writeback for the whole inode - but that could create new problems
> with stalling other files for too long I suspect.

Yeah, it's a hard problem in general. The flusher works naturally in
the coarse way..

> > We may have to do (conditional) tagged ->writepages to safeguard users
> > from losing data he'd expect to be written hours ago.
>   Well, if the file is continuously written (and in your case it must be
> even continuosly grown) I'd be content if we handle well the common case of
> linear append (that happens for log files etc.). If we can do well for more
> cases, even better but I'd be cautious not to disrupt some other more
> common cases.

I scratched a patch (totally untested) which will guarantee any kind
of starvation inside an inode. Will this be too overweight?

Thanks,
Fengguang
---
Subject: writeback: livelock prevention inside actively dirtied files
Date: Tue Apr 26 21:35:47 CST 2011

- refresh dirtied_when on every full writeback_index cycle
  (pages may be skipped on SYNC_NONE, but as long as they are retried in
  next cycle..)

- do tagged sync when writeback_index not cycled for too long time
  (the arbitrarily 60s may lead to more page tagging overheads in
  "large dirty threshold but slow storage" system..)

Signed-off-by: Wu Fengguang <fengguang.wu@intel.com>
---
 fs/fs-writeback.c       |    1 +
 include/linux/fs.h      |    1 +
 include/linux/pagemap.h |   16 ++++++++++++++++
 mm/page-writeback.c     |   24 ++++++++++++++++++------
 4 files changed, 36 insertions(+), 6 deletions(-)

--- linux-next.orig/fs/fs-writeback.c	2011-04-26 21:26:28.000000000 +0800
+++ linux-next/fs/fs-writeback.c	2011-04-26 21:26:39.000000000 +0800
@@ -1110,6 +1110,7 @@ void __mark_inode_dirty(struct inode *in
 			spin_unlock(&inode->i_lock);
 			spin_lock(&bdi->wb.list_lock);
 			inode->dirtied_when = jiffies;
+			inode->i_mapping->writeback_cycle_time = jiffies;
 			list_move(&inode->i_wb_list, &bdi->wb.b_dirty);
 			spin_unlock(&bdi->wb.list_lock);
 
--- linux-next.orig/include/linux/fs.h	2011-04-26 21:26:28.000000000 +0800
+++ linux-next/include/linux/fs.h	2011-04-26 21:26:39.000000000 +0800
@@ -639,6 +639,7 @@ struct address_space {
 	unsigned int		truncate_count;	/* Cover race condition with truncate */
 	unsigned long		nrpages;	/* number of total pages */
 	pgoff_t			writeback_index;/* writeback starts here */
+	unsigned long		writeback_cycle_time;
 	const struct address_space_operations *a_ops;	/* methods */
 	unsigned long		flags;		/* error bits/gfp mask */
 	struct backing_dev_info *backing_dev_info; /* device readahead, etc */
--- linux-next.orig/mm/page-writeback.c	2011-04-26 21:26:28.000000000 +0800
+++ linux-next/mm/page-writeback.c	2011-04-26 21:33:47.000000000 +0800
@@ -835,6 +835,9 @@ void tag_pages_for_writeback(struct addr
 		cond_resched();
 		/* We check 'start' to handle wrapping when end == ~0UL */
 	} while (tagged >= WRITEBACK_TAG_BATCH && start);
+
+	mapping_set_tagged_sync(mapping);
+	mapping->writeback_cycle_time = jiffies;
 }
 EXPORT_SYMBOL(tag_pages_for_writeback);
 
@@ -872,7 +875,7 @@ int write_cache_pages(struct address_spa
 	pgoff_t end;		/* Inclusive */
 	pgoff_t done_index;
 	int range_whole = 0;
-	int tag;
+	int tag = PAGECACHE_TAG_DIRTY;
 
 	pagevec_init(&pvec, 0);
 	if (wbc->range_cyclic) {
@@ -884,13 +887,19 @@ int write_cache_pages(struct address_spa
 		if (wbc->range_start == 0 && wbc->range_end == LLONG_MAX)
 			range_whole = 1;
 	}
-	if (wbc->sync_mode == WB_SYNC_ALL)
-		tag = PAGECACHE_TAG_TOWRITE;
-	else
-		tag = PAGECACHE_TAG_DIRTY;
+	if (!index)
+		mapping->writeback_cycle_time = jiffies;
 
-	if (wbc->sync_mode == WB_SYNC_ALL)
+	if (wbc->sync_mode == WB_SYNC_ALL ||
+	    (!mapping_tagged_sync(mapping) &&
+	     jiffies - mapping->host->dirtied_when > 60 * HZ)) {
 		tag_pages_for_writeback(mapping, index, end);
+		tag = PAGECACHE_TAG_TOWRITE;
+	}
+
+	if (mapping_tagged_sync(mapping))
+		tag = PAGECACHE_TAG_TOWRITE;
+
 	done_index = index;
 	while (!done && (index <= end)) {
 		int i;
@@ -899,6 +908,9 @@ int write_cache_pages(struct address_spa
 			      min(end - index, (pgoff_t)PAGEVEC_SIZE-1) + 1);
 		if (nr_pages == 0) {
 			done_index = 0;
+			mapping->dirtied_when = mapping->writeback_cycle_time;
+			if (tag == PAGECACHE_TAG_TOWRITE)
+				mapping_clear_tagged_sync(mapping);
 			break;
 		}
 
--- linux-next.orig/include/linux/pagemap.h	2011-04-26 21:26:28.000000000 +0800
+++ linux-next/include/linux/pagemap.h	2011-04-26 21:46:38.000000000 +0800
@@ -24,6 +24,7 @@ enum mapping_flags {
 	AS_ENOSPC	= __GFP_BITS_SHIFT + 1,	/* ENOSPC on async write */
 	AS_MM_ALL_LOCKS	= __GFP_BITS_SHIFT + 2,	/* under mm_take_all_locks() */
 	AS_UNEVICTABLE	= __GFP_BITS_SHIFT + 3,	/* e.g., ramdisk, SHM_LOCK */
+	AS_TAGGED_SYNC	= __GFP_BITS_SHIFT + 4,	/* sync only tagged pages */
 };
 
 static inline void mapping_set_error(struct address_space *mapping, int error)
@@ -53,6 +54,21 @@ static inline int mapping_unevictable(st
 	return !!mapping;
 }
 
+static inline void mapping_set_tagged_sync(struct address_space *mapping)
+{
+	set_bit(AS_TAGGED_SYNC, &mapping->flags);
+}
+
+static inline void mapping_clear_tagged_sync(struct address_space *mapping)
+{
+	clear_bit(AS_TAGGED_SYNC, &mapping->flags);
+}
+
+static inline int mapping_tagged_sync(struct address_space *mapping)
+{
+	return test_bit(AS_TAGGED_SYNC, &mapping->flags);
+}
+
 static inline gfp_t mapping_gfp_mask(struct address_space * mapping)
 {
 	return (__force gfp_t)mapping->flags & __GFP_BITS_MASK;

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Re: [PATCH 5/6] writeback: sync expired inodes first in background writeback

[Wu Fengguang]

On Tue, Apr 26, 2011 at 09:51:30PM +0800, Wu Fengguang wrote:
> On Tue, Apr 26, 2011 at 08:17:51PM +0800, Jan Kara wrote:
> > On Sun 24-04-11 11:15:31, Wu Fengguang wrote:
> > > > One of the many requirements for writeback is that if userspace is
> > > > continually dirtying pages in a particular file, that shouldn't cause
> > > > the kupdate function to concentrate on that file's newly-dirtied pages,
> > > > neglecting pages from other files which were less-recently dirtied. 
> > > > (and dirty nodes, etc).
> > > 
> > > Sadly I do find the old pages that the flusher never get a chance to
> > > catch and write them out.
> >   What kind of load do you use?
> 
> Sorry I was just thinking about it and then got a _theoretic_ case.
> 
> > > In the below case, if the task dirties pages fast enough at the end of
> > > file, writeback_index will never get a chance to wrap back. There may
> > > be various variations of this case.
> > > 
> > > file head
> > > [          ***                        ==>***************]==>
> > >            old pages          writeback_index            fresh dirties
> > > 
> > > Ironically the current kernel relies on pageout() to catch these
> > > old pages, which is not only inefficient, but also not reliable.
> > > If a full LRU walk takes an hour, the old pages may stay dirtied
> > > for an hour.
> >   Well, the kupdate behavior has always been just a best-effort thing. We
> > always tried to handle well common cases but didn't try to solve all of
> > them. Unless we want to track dirty-age of every page (which we don't
> > want because it's too expensive), there is really no way to make syncing
> > of old pages 100% working for all the cases unless we do data-integrity
> > type of writeback for the whole inode - but that could create new problems
> > with stalling other files for too long I suspect.
> 
> Yeah, it's a hard problem in general. The flusher works naturally in
> the coarse way..
> 
> > > We may have to do (conditional) tagged ->writepages to safeguard users
> > > from losing data he'd expect to be written hours ago.
> >   Well, if the file is continuously written (and in your case it must be
> > even continuosly grown) I'd be content if we handle well the common case of
> > linear append (that happens for log files etc.). If we can do well for more
> > cases, even better but I'd be cautious not to disrupt some other more
> > common cases.
> 
> I scratched a patch (totally untested) which will guarantee any kind
> of starvation inside an inode. Will this be too overweight?
> 
> Thanks,
> Fengguang
> ---
> Subject: writeback: livelock prevention inside actively dirtied files
> Date: Tue Apr 26 21:35:47 CST 2011
> 
> - refresh dirtied_when on every full writeback_index cycle
>   (pages may be skipped on SYNC_NONE, but as long as they are retried in
>   next cycle..)
> 
> - do tagged sync when writeback_index not cycled for too long time
>   (the arbitrarily 60s may lead to more page tagging overheads in
>   "large dirty threshold but slow storage" system..)
> 
> Signed-off-by: Wu Fengguang <fengguang.wu@intel.com>
> ---
>  fs/fs-writeback.c       |    1 +
>  include/linux/fs.h      |    1 +
>  include/linux/pagemap.h |   16 ++++++++++++++++
>  mm/page-writeback.c     |   24 ++++++++++++++++++------
>  4 files changed, 36 insertions(+), 6 deletions(-)
> 
> --- linux-next.orig/fs/fs-writeback.c	2011-04-26 21:26:28.000000000 +0800
> +++ linux-next/fs/fs-writeback.c	2011-04-26 21:26:39.000000000 +0800
> @@ -1110,6 +1110,7 @@ void __mark_inode_dirty(struct inode *in
>  			spin_unlock(&inode->i_lock);
>  			spin_lock(&bdi->wb.list_lock);
>  			inode->dirtied_when = jiffies;
> +			inode->i_mapping->writeback_cycle_time = jiffies;
>  			list_move(&inode->i_wb_list, &bdi->wb.b_dirty);
>  			spin_unlock(&bdi->wb.list_lock);
>  
> --- linux-next.orig/include/linux/fs.h	2011-04-26 21:26:28.000000000 +0800
> +++ linux-next/include/linux/fs.h	2011-04-26 21:26:39.000000000 +0800
> @@ -639,6 +639,7 @@ struct address_space {
>  	unsigned int		truncate_count;	/* Cover race condition with truncate */
>  	unsigned long		nrpages;	/* number of total pages */
>  	pgoff_t			writeback_index;/* writeback starts here */
> +	unsigned long		writeback_cycle_time;
>  	const struct address_space_operations *a_ops;	/* methods */
>  	unsigned long		flags;		/* error bits/gfp mask */
>  	struct backing_dev_info *backing_dev_info; /* device readahead, etc */

> --- linux-next.orig/mm/page-writeback.c	2011-04-26 21:26:28.000000000 +0800
> +++ linux-next/mm/page-writeback.c	2011-04-26 21:33:47.000000000 +0800
> @@ -835,6 +835,9 @@ void tag_pages_for_writeback(struct addr
>  		cond_resched();
>  		/* We check 'start' to handle wrapping when end == ~0UL */
>  	} while (tagged >= WRITEBACK_TAG_BATCH && start);
> +
> +	mapping_set_tagged_sync(mapping);
> +	mapping->writeback_cycle_time = jiffies;
>  }

Sorry the above "mapping->writeback_cycle_time = jiffies" is not
correct and shall be removed. It should be updated iff (index == 0).

Thanks,
Fengguang

>  EXPORT_SYMBOL(tag_pages_for_writeback);
>  
> @@ -872,7 +875,7 @@ int write_cache_pages(struct address_spa
>  	pgoff_t end;		/* Inclusive */
>  	pgoff_t done_index;
>  	int range_whole = 0;
> -	int tag;
> +	int tag = PAGECACHE_TAG_DIRTY;
>  
>  	pagevec_init(&pvec, 0);
>  	if (wbc->range_cyclic) {
> @@ -884,13 +887,19 @@ int write_cache_pages(struct address_spa
>  		if (wbc->range_start == 0 && wbc->range_end == LLONG_MAX)
>  			range_whole = 1;
>  	}
> -	if (wbc->sync_mode == WB_SYNC_ALL)
> -		tag = PAGECACHE_TAG_TOWRITE;
> -	else
> -		tag = PAGECACHE_TAG_DIRTY;
> +	if (!index)
> +		mapping->writeback_cycle_time = jiffies;

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Re: [PATCH 5/6] writeback: sync expired inodes first in background writeback

[Wu Fengguang]

> I scratched a patch (totally untested) which will guarantee any kind
> of starvation inside an inode. Will this be too overweight?
> 
> Thanks,
> Fengguang
> ---
> Subject: writeback: livelock prevention inside actively dirtied files
> Date: Tue Apr 26 21:35:47 CST 2011
> 
> - refresh dirtied_when on every full writeback_index cycle
>   (pages may be skipped on SYNC_NONE, but as long as they are retried in
>   next cycle..)
> 
> - do tagged sync when writeback_index not cycled for too long time
>   (the arbitrarily 60s may lead to more page tagging overheads in
>   "large dirty threshold but slow storage" system..)
> 
> Signed-off-by: Wu Fengguang <fengguang.wu@intel.com>
> ---
>  fs/fs-writeback.c       |    1 +
>  include/linux/fs.h      |    1 +
>  include/linux/pagemap.h |   16 ++++++++++++++++
>  mm/page-writeback.c     |   24 ++++++++++++++++++------
>  4 files changed, 36 insertions(+), 6 deletions(-)

FYI to make it easier, the above patch is actually based upon this one.
---
Subject: writeback: quit on wrap for .range_cyclic
Date: Mon Apr 25 14:58:19 CST 2011

Convert wbc.range_cyclic to new behavior: when past EOF, abort the
writeback of the current inode, which will instruct
writeback_single_inode() to redirty_tail() it.

This is the right behavior for
- sync writeback (is already so with range_whole)
  we have scanned the inode address space, and don't care any more newly
  dirtied pages. So shall update its i_dirtied_when and exclude it from
  the todo list.
- periodic writeback
  any more newly dirtied pages should be associated with a new expire
  time. This also prevents pointless IO for busy overwriters.
- background writeback
  irrelevant because it generally don't care the dirty timestamp.

That should get rid of one inefficient IO pattern of .range_cyclic when
writeback_index wraps, in which the submitted pages may be consisted of
two distant ranges: submit [10000-10100], (wrap), submit [0-100].

Signed-off-by: Wu Fengguang <fengguang.wu@intel.com>
---
 drivers/staging/pohmelfs/inode.c |   25 ++++++++-----------------
 fs/afs/write.c                   |    7 +++----
 fs/btrfs/extent_io.c             |   21 ++++++---------------
 fs/cifs/file.c                   |   15 +++------------
 fs/ext4/inode.c                  |   18 ++++--------------
 fs/gfs2/aops.c                   |   16 ++--------------
 mm/page-writeback.c              |   27 +++++----------------------
 7 files changed, 31 insertions(+), 98 deletions(-)

--- linux-next.orig/mm/page-writeback.c	2011-04-25 14:56:33.000000000 +0800
+++ linux-next/mm/page-writeback.c	2011-04-25 14:57:09.000000000 +0800
@@ -868,35 +868,27 @@ int write_cache_pages(struct address_spa
 	int done = 0;
 	struct pagevec pvec;
 	int nr_pages;
-	pgoff_t uninitialized_var(writeback_index);
 	pgoff_t index;
 	pgoff_t end;		/* Inclusive */
 	pgoff_t done_index;
-	int cycled;
 	int range_whole = 0;
 	int tag;
 
 	pagevec_init(&pvec, 0);
 	if (wbc->range_cyclic) {
-		writeback_index = mapping->writeback_index; /* prev offset */
-		index = writeback_index;
-		if (index == 0)
-			cycled = 1;
-		else
-			cycled = 0;
+		index = mapping->writeback_index; /* prev offset */
 		end = -1;
 	} else {
 		index = wbc->range_start >> PAGE_CACHE_SHIFT;
 		end = wbc->range_end >> PAGE_CACHE_SHIFT;
 		if (wbc->range_start == 0 && wbc->range_end == LLONG_MAX)
 			range_whole = 1;
-		cycled = 1; /* ignore range_cyclic tests */
 	}
 	if (wbc->sync_mode == WB_SYNC_ALL)
 		tag = PAGECACHE_TAG_TOWRITE;
 	else
 		tag = PAGECACHE_TAG_DIRTY;
-retry:
+
 	if (wbc->sync_mode == WB_SYNC_ALL)
 		tag_pages_for_writeback(mapping, index, end);
 	done_index = index;
@@ -905,8 +897,10 @@ retry:
 
 		nr_pages = pagevec_lookup_tag(&pvec, mapping, &index, tag,
 			      min(end - index, (pgoff_t)PAGEVEC_SIZE-1) + 1);
-		if (nr_pages == 0)
+		if (nr_pages == 0) {
+			done_index = 0;
 			break;
+		}
 
 		for (i = 0; i < nr_pages; i++) {
 			struct page *page = pvec.pages[i];
@@ -998,17 +992,6 @@ continue_unlock:
 		pagevec_release(&pvec);
 		cond_resched();
 	}
-	if (!cycled && !done) {
-		/*
-		 * range_cyclic:
-		 * We hit the last page and there is more work to be done: wrap
-		 * back to the start of the file
-		 */
-		cycled = 1;
-		index = 0;
-		end = writeback_index - 1;
-		goto retry;
-	}
 	if (wbc->range_cyclic || (range_whole && wbc->nr_to_write > 0))
 		mapping->writeback_index = done_index;
 
--- linux-next.orig/drivers/staging/pohmelfs/inode.c	2011-03-31 13:53:02.000000000 +0800
+++ linux-next/drivers/staging/pohmelfs/inode.c	2011-04-25 14:57:03.000000000 +0800
@@ -148,7 +148,6 @@ static int pohmelfs_writepages(struct ad
 	int nr_pages;
 	pgoff_t index;
 	pgoff_t end;		/* Inclusive */
-	int scanned = 0;
 	int range_whole = 0;
 
 	if (wbc->range_cyclic) {
@@ -159,17 +158,18 @@ static int pohmelfs_writepages(struct ad
 		end = wbc->range_end >> PAGE_CACHE_SHIFT;
 		if (wbc->range_start == 0 && wbc->range_end == LLONG_MAX)
 			range_whole = 1;
-		scanned = 1;
 	}
-retry:
+
 	while (!done && (index <= end)) {
 		unsigned int i = min(end - index, (pgoff_t)psb->trans_max_pages);
 		int path_len;
 		struct netfs_trans *trans;
 
 		err = pohmelfs_inode_has_dirty_pages(mapping, index);
-		if (!err)
+		if (!err) {
+			index = 0;
 			break;
+		}
 
 		err = pohmelfs_path_length(pi);
 		if (err < 0)
@@ -196,15 +196,16 @@ retry:
 		dprintk("%s: t: %p, nr_pages: %u, end: %lu, index: %lu, max: %u.\n",
 				__func__, trans, nr_pages, end, index, trans->page_num);
 
-		if (!nr_pages)
+		if (!nr_pages) {
+			index = 0;
 			goto err_out_reset;
+		}
 
 		err = pohmelfs_write_inode_create(inode, trans);
 		if (err)
 			goto err_out_reset;
 
 		err = 0;
-		scanned = 1;
 
 		for (i = 0; i < trans->page_num; i++) {
 			struct page *page = trans->pages[i];
@@ -214,7 +215,7 @@ retry:
 			if (unlikely(page->mapping != mapping))
 				goto out_continue;
 
-			if (!wbc->range_cyclic && page->index > end) {
+			if (page->index > end) {
 				done = 1;
 				goto out_continue;
 			}
@@ -262,16 +263,6 @@ err_out_reset:
 		break;
 	}
 
-	if (!scanned && !done) {
-		/*
-		 * We hit the last page and there is more work to be done: wrap
-		 * back to the start of the file
-		 */
-		scanned = 1;
-		index = 0;
-		goto retry;
-	}
-
 	if (wbc->range_cyclic || (range_whole && wbc->nr_to_write > 0))
 		mapping->writeback_index = index;
 
--- linux-next.orig/fs/btrfs/extent_io.c	2011-04-20 17:08:47.000000000 +0800
+++ linux-next/fs/btrfs/extent_io.c	2011-04-25 14:57:50.000000000 +0800
@@ -2464,10 +2464,9 @@ static int extent_write_cache_pages(stru
 	int done = 0;
 	int nr_to_write_done = 0;
 	struct pagevec pvec;
-	int nr_pages;
+	int nr_pages = 1;
 	pgoff_t index;
 	pgoff_t end;		/* Inclusive */
-	int scanned = 0;
 
 	pagevec_init(&pvec, 0);
 	if (wbc->range_cyclic) {
@@ -2476,16 +2475,14 @@ static int extent_write_cache_pages(stru
 	} else {
 		index = wbc->range_start >> PAGE_CACHE_SHIFT;
 		end = wbc->range_end >> PAGE_CACHE_SHIFT;
-		scanned = 1;
 	}
-retry:
+
 	while (!done && !nr_to_write_done && (index <= end) &&
 	       (nr_pages = pagevec_lookup_tag(&pvec, mapping, &index,
 			      PAGECACHE_TAG_DIRTY, min(end - index,
 				  (pgoff_t)PAGEVEC_SIZE-1) + 1))) {
 		unsigned i;
 
-		scanned = 1;
 		for (i = 0; i < nr_pages; i++) {
 			struct page *page = pvec.pages[i];
 
@@ -2506,7 +2503,7 @@ retry:
 				continue;
 			}
 
-			if (!wbc->range_cyclic && page->index > end) {
+			if (page->index > end) {
 				done = 1;
 				unlock_page(page);
 				continue;
@@ -2543,15 +2540,9 @@ retry:
 		pagevec_release(&pvec);
 		cond_resched();
 	}
-	if (!scanned && !done) {
-		/*
-		 * We hit the last page and there is more work to be done: wrap
-		 * back to the start of the file
-		 */
-		scanned = 1;
-		index = 0;
-		goto retry;
-	}
+	if (!nr_pages)
+		mapping->writeback_index = 0;
+
 	return ret;
 }
 
--- linux-next.orig/fs/cifs/file.c	2011-04-20 17:08:47.000000000 +0800
+++ linux-next/fs/cifs/file.c	2011-04-25 14:58:00.000000000 +0800
@@ -1200,7 +1200,6 @@ static int cifs_writepages(struct addres
 	struct page *page;
 	struct pagevec pvec;
 	int rc = 0;
-	int scanned = 0;
 	int xid;
 
 	cifs_sb = CIFS_SB(mapping->host->i_sb);
@@ -1241,9 +1240,8 @@ static int cifs_writepages(struct addres
 		end = wbc->range_end >> PAGE_CACHE_SHIFT;
 		if (wbc->range_start == 0 && wbc->range_end == LLONG_MAX)
 			range_whole = 1;
-		scanned = 1;
 	}
-retry:
+
 	while (!done && (index <= end) &&
 	       (nr_pages = pagevec_lookup_tag(&pvec, mapping, &index,
 			PAGECACHE_TAG_DIRTY,
@@ -1276,7 +1274,7 @@ retry:
 				break;
 			}
 
-			if (!wbc->range_cyclic && page->index > end) {
+			if (page->index > end) {
 				done = 1;
 				unlock_page(page);
 				break;
@@ -1403,15 +1401,8 @@ retry_write:
 
 		pagevec_release(&pvec);
 	}
-	if (!scanned && !done) {
-		/*
-		 * We hit the last page and there is more work to be done: wrap
-		 * back to the start of the file
-		 */
-		scanned = 1;
+	if (!nr_pages)
 		index = 0;
-		goto retry;
-	}
 	if (wbc->range_cyclic || (range_whole && wbc->nr_to_write > 0))
 		mapping->writeback_index = index;
 
--- linux-next.orig/fs/ext4/inode.c	2011-04-12 11:13:27.000000000 +0800
+++ linux-next/fs/ext4/inode.c	2011-04-25 15:01:30.000000000 +0800
@@ -2893,7 +2893,7 @@ static int ext4_da_writepages(struct add
 	struct inode *inode = mapping->host;
 	int pages_written = 0;
 	unsigned int max_pages;
-	int range_cyclic, cycled = 1, io_done = 0;
+	int range_cyclic, io_done = 0;
 	int needed_blocks, ret = 0;
 	long desired_nr_to_write, nr_to_writebump = 0;
 	loff_t range_start = wbc->range_start;
@@ -2930,8 +2930,6 @@ static int ext4_da_writepages(struct add
 	range_cyclic = wbc->range_cyclic;
 	if (wbc->range_cyclic) {
 		index = mapping->writeback_index;
-		if (index)
-			cycled = 0;
 		wbc->range_start = index << PAGE_CACHE_SHIFT;
 		wbc->range_end  = LLONG_MAX;
 		wbc->range_cyclic = 0;
@@ -2974,7 +2972,6 @@ static int ext4_da_writepages(struct add
 		wbc->nr_to_write = desired_nr_to_write;
 	}
 
-retry:
 	if (wbc->sync_mode == WB_SYNC_ALL)
 		tag_pages_for_writeback(mapping, index, end);
 
@@ -3034,20 +3031,13 @@ retry:
 			pages_written += mpd.pages_written;
 			ret = 0;
 			io_done = 1;
-		} else if (wbc->nr_to_write)
+		} else if (wbc->nr_to_write > 0) {
 			/*
 			 * There is no more writeout needed
-			 * or we requested for a noblocking writeout
-			 * and we found the device congested
 			 */
+			index = 0;
 			break;
-	}
-	if (!io_done && !cycled) {
-		cycled = 1;
-		index = 0;
-		wbc->range_start = index << PAGE_CACHE_SHIFT;
-		wbc->range_end  = mapping->writeback_index - 1;
-		goto retry;
+		}
 	}
 
 	/* Update index */
--- linux-next.orig/fs/gfs2/aops.c	2011-03-31 13:53:21.000000000 +0800
+++ linux-next/fs/gfs2/aops.c	2011-04-25 14:57:03.000000000 +0800
@@ -283,7 +283,7 @@ static int gfs2_write_jdata_pagevec(stru
 			continue;
 		}
 
-		if (!wbc->range_cyclic && page->index > end) {
+		if (page->index > end) {
 			ret = 1;
 			unlock_page(page);
 			continue;
@@ -335,7 +335,6 @@ static int gfs2_write_cache_jdata(struct
 	int nr_pages;
 	pgoff_t index;
 	pgoff_t end;
-	int scanned = 0;
 	int range_whole = 0;
 
 	pagevec_init(&pvec, 0);
@@ -347,15 +346,12 @@ static int gfs2_write_cache_jdata(struct
 		end = wbc->range_end >> PAGE_CACHE_SHIFT;
 		if (wbc->range_start == 0 && wbc->range_end == LLONG_MAX)
 			range_whole = 1;
-		scanned = 1;
 	}
 
-retry:
 	 while (!done && (index <= end) &&
 		(nr_pages = pagevec_lookup_tag(&pvec, mapping, &index,
 					       PAGECACHE_TAG_DIRTY,
 					       min(end - index, (pgoff_t)PAGEVEC_SIZE-1) + 1))) {
-		scanned = 1;
 		ret = gfs2_write_jdata_pagevec(mapping, wbc, &pvec, nr_pages, end);
 		if (ret)
 			done = 1;
@@ -366,16 +362,8 @@ retry:
 		cond_resched();
 	}
 
-	if (!scanned && !done) {
-		/*
-		 * We hit the last page and there is more work to be done: wrap
-		 * back to the start of the file
-		 */
-		scanned = 1;
+	if (!nr_pages)
 		index = 0;
-		goto retry;
-	}
-
 	if (wbc->range_cyclic || (range_whole && wbc->nr_to_write > 0))
 		mapping->writeback_index = index;
 	return ret;
--- linux-next.orig/fs/afs/write.c	2011-03-02 17:41:41.000000000 +0800
+++ linux-next/fs/afs/write.c	2011-04-25 14:57:03.000000000 +0800
@@ -476,8 +476,10 @@ static int afs_writepages_region(struct 
 	do {
 		n = find_get_pages_tag(mapping, &index, PAGECACHE_TAG_DIRTY,
 				       1, &page);
-		if (!n)
+		if (!n) {
+			index = 0;
 			break;
+		}
 
 		_debug("wback %lx", page->index);
 
@@ -549,9 +551,6 @@ int afs_writepages(struct address_space 
 		start = mapping->writeback_index;
 		end = -1;
 		ret = afs_writepages_region(mapping, wbc, start, end, &next);
-		if (start > 0 && wbc->nr_to_write > 0 && ret == 0)
-			ret = afs_writepages_region(mapping, wbc, 0, start,
-						    &next);
 		mapping->writeback_index = next;
 	} else if (wbc->range_start == 0 && wbc->range_end == LLONG_MAX) {
 		end = (pgoff_t)(LLONG_MAX >> PAGE_CACHE_SHIFT);

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Re: [PATCH 5/6] writeback: sync expired inodes first in background writeback

[Wu Fengguang]

On Tue, Apr 26, 2011 at 09:51:30PM +0800, Wu Fengguang wrote:
> On Tue, Apr 26, 2011 at 08:17:51PM +0800, Jan Kara wrote:
> > On Sun 24-04-11 11:15:31, Wu Fengguang wrote:
> > > > One of the many requirements for writeback is that if userspace is
> > > > continually dirtying pages in a particular file, that shouldn't cause
> > > > the kupdate function to concentrate on that file's newly-dirtied pages,
> > > > neglecting pages from other files which were less-recently dirtied. 
> > > > (and dirty nodes, etc).
> > > 
> > > Sadly I do find the old pages that the flusher never get a chance to
> > > catch and write them out.
> >   What kind of load do you use?
> 
> Sorry I was just thinking about it and then got a _theoretic_ case.
> 
> > > In the below case, if the task dirties pages fast enough at the end of
> > > file, writeback_index will never get a chance to wrap back. There may
> > > be various variations of this case.
> > > 
> > > file head
> > > [          ***                        ==>***************]==>
> > >            old pages          writeback_index            fresh dirties
> > > 
> > > Ironically the current kernel relies on pageout() to catch these
> > > old pages, which is not only inefficient, but also not reliable.
> > > If a full LRU walk takes an hour, the old pages may stay dirtied
> > > for an hour.
> >   Well, the kupdate behavior has always been just a best-effort thing. We
> > always tried to handle well common cases but didn't try to solve all of
> > them. Unless we want to track dirty-age of every page (which we don't
> > want because it's too expensive), there is really no way to make syncing
> > of old pages 100% working for all the cases unless we do data-integrity
> > type of writeback for the whole inode - but that could create new problems
> > with stalling other files for too long I suspect.
> 
> Yeah, it's a hard problem in general. The flusher works naturally in
> the coarse way..
> 
> > > We may have to do (conditional) tagged ->writepages to safeguard users
> > > from losing data he'd expect to be written hours ago.
> >   Well, if the file is continuously written (and in your case it must be
> > even continuosly grown) I'd be content if we handle well the common case of
> > linear append (that happens for log files etc.). If we can do well for more
> > cases, even better but I'd be cautious not to disrupt some other more
> > common cases.
> 
> I scratched a patch (totally untested) which will guarantee any kind
> of starvation inside an inode. Will this be too overweight?

Sorry please ignore this broken patch..

I cannot find the right time to call mapping_clear_tagged_sync() at
all, given that several entities may be writing the same inode. Even
if we make it a reference count, the background work may still abort
at any time.

Thanks,
Fengguang

> ---
> Subject: writeback: livelock prevention inside actively dirtied files
> Date: Tue Apr 26 21:35:47 CST 2011
> 
> - refresh dirtied_when on every full writeback_index cycle
>   (pages may be skipped on SYNC_NONE, but as long as they are retried in
>   next cycle..)
> 
> - do tagged sync when writeback_index not cycled for too long time
>   (the arbitrarily 60s may lead to more page tagging overheads in
>   "large dirty threshold but slow storage" system..)
> 
> Signed-off-by: Wu Fengguang <fengguang.wu@intel.com>
> ---
>  fs/fs-writeback.c       |    1 +
>  include/linux/fs.h      |    1 +
>  include/linux/pagemap.h |   16 ++++++++++++++++
>  mm/page-writeback.c     |   24 ++++++++++++++++++------
>  4 files changed, 36 insertions(+), 6 deletions(-)
> 
> --- linux-next.orig/fs/fs-writeback.c	2011-04-26 21:26:28.000000000 +0800
> +++ linux-next/fs/fs-writeback.c	2011-04-26 21:26:39.000000000 +0800
> @@ -1110,6 +1110,7 @@ void __mark_inode_dirty(struct inode *in
>  			spin_unlock(&inode->i_lock);
>  			spin_lock(&bdi->wb.list_lock);
>  			inode->dirtied_when = jiffies;
> +			inode->i_mapping->writeback_cycle_time = jiffies;
>  			list_move(&inode->i_wb_list, &bdi->wb.b_dirty);
>  			spin_unlock(&bdi->wb.list_lock);
>  
> --- linux-next.orig/include/linux/fs.h	2011-04-26 21:26:28.000000000 +0800
> +++ linux-next/include/linux/fs.h	2011-04-26 21:26:39.000000000 +0800
> @@ -639,6 +639,7 @@ struct address_space {
>  	unsigned int		truncate_count;	/* Cover race condition with truncate */
>  	unsigned long		nrpages;	/* number of total pages */
>  	pgoff_t			writeback_index;/* writeback starts here */
> +	unsigned long		writeback_cycle_time;
>  	const struct address_space_operations *a_ops;	/* methods */
>  	unsigned long		flags;		/* error bits/gfp mask */
>  	struct backing_dev_info *backing_dev_info; /* device readahead, etc */
> --- linux-next.orig/mm/page-writeback.c	2011-04-26 21:26:28.000000000 +0800
> +++ linux-next/mm/page-writeback.c	2011-04-26 21:33:47.000000000 +0800
> @@ -835,6 +835,9 @@ void tag_pages_for_writeback(struct addr
>  		cond_resched();
>  		/* We check 'start' to handle wrapping when end == ~0UL */
>  	} while (tagged >= WRITEBACK_TAG_BATCH && start);
> +
> +	mapping_set_tagged_sync(mapping);
> +	mapping->writeback_cycle_time = jiffies;
>  }
>  EXPORT_SYMBOL(tag_pages_for_writeback);
>  
> @@ -872,7 +875,7 @@ int write_cache_pages(struct address_spa
>  	pgoff_t end;		/* Inclusive */
>  	pgoff_t done_index;
>  	int range_whole = 0;
> -	int tag;
> +	int tag = PAGECACHE_TAG_DIRTY;
>  
>  	pagevec_init(&pvec, 0);
>  	if (wbc->range_cyclic) {
> @@ -884,13 +887,19 @@ int write_cache_pages(struct address_spa
>  		if (wbc->range_start == 0 && wbc->range_end == LLONG_MAX)
>  			range_whole = 1;
>  	}
> -	if (wbc->sync_mode == WB_SYNC_ALL)
> -		tag = PAGECACHE_TAG_TOWRITE;
> -	else
> -		tag = PAGECACHE_TAG_DIRTY;
> +	if (!index)
> +		mapping->writeback_cycle_time = jiffies;
>  
> -	if (wbc->sync_mode == WB_SYNC_ALL)
> +	if (wbc->sync_mode == WB_SYNC_ALL ||
> +	    (!mapping_tagged_sync(mapping) &&
> +	     jiffies - mapping->host->dirtied_when > 60 * HZ)) {
>  		tag_pages_for_writeback(mapping, index, end);
> +		tag = PAGECACHE_TAG_TOWRITE;
> +	}
> +
> +	if (mapping_tagged_sync(mapping))
> +		tag = PAGECACHE_TAG_TOWRITE;
> +
>  	done_index = index;
>  	while (!done && (index <= end)) {
>  		int i;
> @@ -899,6 +908,9 @@ int write_cache_pages(struct address_spa
>  			      min(end - index, (pgoff_t)PAGEVEC_SIZE-1) + 1);
>  		if (nr_pages == 0) {
>  			done_index = 0;
> +			mapping->dirtied_when = mapping->writeback_cycle_time;
> +			if (tag == PAGECACHE_TAG_TOWRITE)
> +				mapping_clear_tagged_sync(mapping);
>  			break;
>  		}
>  
> --- linux-next.orig/include/linux/pagemap.h	2011-04-26 21:26:28.000000000 +0800
> +++ linux-next/include/linux/pagemap.h	2011-04-26 21:46:38.000000000 +0800
> @@ -24,6 +24,7 @@ enum mapping_flags {
>  	AS_ENOSPC	= __GFP_BITS_SHIFT + 1,	/* ENOSPC on async write */
>  	AS_MM_ALL_LOCKS	= __GFP_BITS_SHIFT + 2,	/* under mm_take_all_locks() */
>  	AS_UNEVICTABLE	= __GFP_BITS_SHIFT + 3,	/* e.g., ramdisk, SHM_LOCK */
> +	AS_TAGGED_SYNC	= __GFP_BITS_SHIFT + 4,	/* sync only tagged pages */
>  };
>  
>  static inline void mapping_set_error(struct address_space *mapping, int error)
> @@ -53,6 +54,21 @@ static inline int mapping_unevictable(st
>  	return !!mapping;
>  }
>  
> +static inline void mapping_set_tagged_sync(struct address_space *mapping)
> +{
> +	set_bit(AS_TAGGED_SYNC, &mapping->flags);
> +}
> +
> +static inline void mapping_clear_tagged_sync(struct address_space *mapping)
> +{
> +	clear_bit(AS_TAGGED_SYNC, &mapping->flags);
> +}
> +
> +static inline int mapping_tagged_sync(struct address_space *mapping)
> +{
> +	return test_bit(AS_TAGGED_SYNC, &mapping->flags);
> +}
> +
>  static inline gfp_t mapping_gfp_mask(struct address_space * mapping)
>  {
>  	return (__force gfp_t)mapping->flags & __GFP_BITS_MASK;

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[PATCH 6/6] writeback: refill b_io iff empty

[Wu Fengguang]

[-- Attachment #1: writeback-refill-queue-iff-empty.patch --]
[-- Type: text/plain, Size: 5181 bytes --]

There is no point to carry different refill policies between for_kupdate
and other type of works. Use a consistent "refill b_io iff empty" policy
which can guarantee fairness in an easy to understand way.

A b_io refill will setup a _fixed_ work set with all currently eligible
inodes and start a new round of walk through b_io. The "fixed" work set
means no new inodes will be added to the work set during the walk.
Only when a complete walk over b_io is done, new inodes that are
eligible at the time will be enqueued and the walk be started over.

This procedure provides fairness among the inodes because it guarantees
each inode to be synced once and only once at each round. So all inodes
will be free from starvations.

This change relies on wb_writeback() to keep retrying as long as we made
some progress on cleaning some pages and/or inodes. Without that ability,
the old logic on background works relies on aggressively queuing all
eligible inodes into b_io at every time. But that's not a guarantee.

The below test script completes a slightly faster now on XFS:

             2.6.39-rc3	  2.6.39-rc3-dyn-expire+
------------------------------------------------
all elapsed     256.043      252.367
stddev           24.381       12.530

tar elapsed      30.097       28.808
dd  elapsed      13.214       11.782

	#!/bin/zsh

	cp /c/linux-2.6.38.3.tar.bz2 /dev/shm/

	umount /dev/sda7
	mkfs.xfs -f /dev/sda7
	mount /dev/sda7 /fs

	echo 3 > /proc/sys/vm/drop_caches

	tic=$(cat /proc/uptime|cut -d' ' -f2)

	cd /fs
	time tar jxf /dev/shm/linux-2.6.38.3.tar.bz2 &
	time dd if=/dev/zero of=/fs/zero bs=1M count=1000 &

	wait
	sync
	tac=$(cat /proc/uptime|cut -d' ' -f2)
	echo elapsed: $((tac - tic))

It maintains roughly the same small vs. large file writeout shares, and
offers large files better chances to be written in nice 4M chunks.

Analyzes from Dave Chinner in great details:

Let's say we have lots of inodes with 100 dirty pages being created,
and one large writeback going on. We expire 8 new inodes for every
1024 pages we write back.

With the old code, we do:

	b_more_io (large inode) -> b_io (1l)
	8 newly expired inodes -> b_io (1l, 8s)

	writeback  large inode 1024 pages -> b_more_io

	b_more_io (large inode) -> b_io (8s, 1l)
	8 newly expired inodes -> b_io (8s, 1l, 8s)

	writeback  8 small inodes 800 pages
		   1 large inode 224 pages -> b_more_io

	b_more_io (large inode) -> b_io (8s, 1l)
	8 newly expired inodes -> b_io (8s, 1l, 8s)
	.....

Your new code:

	b_more_io (large inode) -> b_io (1l)
	8 newly expired inodes -> b_io (1l, 8s)

	writeback  large inode 1024 pages -> b_more_io
	(b_io == 8s)
	writeback  8 small inodes 800 pages

	b_io empty: (1800 pages written)
		b_more_io (large inode) -> b_io (1l)
		14 newly expired inodes -> b_io (1l, 14s)

	writeback  large inode 1024 pages -> b_more_io
	(b_io == 14s)
	writeback  10 small inodes 1000 pages
		   1 small inode 24 pages -> b_more_io (1l, 1s(24))
	writeback  5 small inodes 500 pages
	b_io empty: (2548 pages written)
		b_more_io (large inode) -> b_io (1l, 1s(24))
		20 newly expired inodes -> b_io (1l, 1s(24), 20s)
	......

Rough progression of pages written at b_io refill:

Old code:

	total	large file	% of writeback
	1024	224		21.9% (fixed)

New code:
	total	large file	% of writeback
	1800	1024		~55%
	2550	1024		~40%
	3050	1024		~33%
	3500	1024		~29%
	3950	1024		~26%
	4250	1024		~24%
	4500	1024		~22.7%
	4700	1024		~21.7%
	4800	1024		~21.3%
	4800	1024		~21.3%
	(pretty much steady state from here)

Ok, so the steady state is reached with a similar percentage of
writeback to the large file as the existing code. Ok, that's good,
but providing some evidence that is doesn't change the shared of
writeback to the large should be in the commit message ;)

The other advantage to this is that we always write 1024 page chunks
to the large file, rather than smaller "whatever remains" chunks.

CC: Jan Kara <jack@suse.cz>
Acked-by: Mel Gorman <mel@csn.ul.ie>
Signed-off-by: Wu Fengguang <fengguang.wu@intel.com>
---
 fs/fs-writeback.c |    5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

--- linux-next.orig/fs/fs-writeback.c	2011-04-20 12:07:48.000000000 +0800
+++ linux-next/fs/fs-writeback.c	2011-04-20 12:08:13.000000000 +0800
@@ -579,7 +579,8 @@ void writeback_inodes_wb(struct bdi_writ
 	if (!wbc->wb_start)
 		wbc->wb_start = jiffies; /* livelock avoidance */
 	spin_lock(&inode_wb_list_lock);
-	if (!wbc->for_kupdate || list_empty(&wb->b_io))
+
+	if (list_empty(&wb->b_io))
 		queue_io(wb, wbc);
 
 	while (!list_empty(&wb->b_io)) {
@@ -606,7 +607,7 @@ static void __writeback_inodes_sb(struct
 	WARN_ON(!rwsem_is_locked(&sb->s_umount));
 
 	spin_lock(&inode_wb_list_lock);
-	if (!wbc->for_kupdate || list_empty(&wb->b_io))
+	if (list_empty(&wb->b_io))
 		queue_io(wb, wbc);
 	writeback_sb_inodes(sb, wb, wbc, true);
 	spin_unlock(&inode_wb_list_lock);


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Re: [PATCH 6/6] writeback: refill b_io iff empty

[Wu Fengguang]

[-- Attachment #1: Type: text/plain, Size: 625 bytes --]

To help understand the behavior change, I wrote the writeback_queue_io
trace event, and found very different patterns between
- vanilla kernel
- this patchset plus the sync livelock fixes

Basically the vanilla kernel each time pulls a random number of inodes
from b_dirty, while the patched kernel tends to pull a fixed number of
inodes (enqueue=1031) from b_dirty. The new behavior is very interesting...

The attached test script runs 1 dd and 1 tar concurrently on XFS,
whose output can be found at the start of the trace files. The
elapsed time is 289s for vanilla kernel and 270s for patched kernel.

Thanks,
Fengguang

[-- Attachment #2: writeback-trace-queue_io.patch --]
[-- Type: text/x-diff, Size: 3107 bytes --]

Subject: 
Date: Sat Apr 23 12:27:27 CST 2011


Signed-off-by: Wu Fengguang <fengguang.wu@intel.com>
---
 fs/fs-writeback.c                |   16 +++++++++++-----
 include/trace/events/writeback.h |   23 +++++++++++++++++++++++
 2 files changed, 34 insertions(+), 5 deletions(-)

--- linux-next.orig/fs/fs-writeback.c	2011-05-04 14:36:48.000000000 +0800
+++ linux-next/fs/fs-writeback.c	2011-05-04 14:37:39.000000000 +0800
@@ -250,15 +250,16 @@ static bool inode_dirtied_after(struct i
 /*
  * Move expired dirty inodes from @delaying_queue to @dispatch_queue.
  */
-static void move_expired_inodes(struct list_head *delaying_queue,
-				struct list_head *dispatch_queue,
-				struct writeback_control *wbc)
+static int move_expired_inodes(struct list_head *delaying_queue,
+			       struct list_head *dispatch_queue,
+			       struct writeback_control *wbc)
 {
 	LIST_HEAD(tmp);
 	struct list_head *pos, *node;
 	struct super_block *sb = NULL;
 	struct inode *inode;
 	int do_sb_sort = 0;
+	int moved = 0;
 
 	while (!list_empty(delaying_queue)) {
 		inode = wb_inode(delaying_queue->prev);
@@ -269,12 +270,13 @@ static void move_expired_inodes(struct l
 			do_sb_sort = 1;
 		sb = inode->i_sb;
 		list_move(&inode->i_wb_list, &tmp);
+		moved++;
 	}
 
 	/* just one sb in list, splice to dispatch_queue and we're done */
 	if (!do_sb_sort) {
 		list_splice(&tmp, dispatch_queue);
-		return;
+		goto out;
 	}
 
 	/* Move inodes from one superblock together */
@@ -286,6 +288,8 @@ static void move_expired_inodes(struct l
 				list_move(&inode->i_wb_list, dispatch_queue);
 		}
 	}
+out:
+	return moved;
 }
 
 /*
@@ -301,9 +305,11 @@ static void move_expired_inodes(struct l
  */
 static void queue_io(struct bdi_writeback *wb, struct writeback_control *wbc)
 {
+	int moved;
 	assert_spin_locked(&inode_wb_list_lock);
 	list_splice_init(&wb->b_more_io, &wb->b_io);
-	move_expired_inodes(&wb->b_dirty, &wb->b_io, wbc);
+	moved = move_expired_inodes(&wb->b_dirty, &wb->b_io, wbc);
+	trace_writeback_queue_io(wb, wbc, moved);
 }
 
 static int write_inode(struct inode *inode, struct writeback_control *wbc)
--- linux-next.orig/include/trace/events/writeback.h	2011-05-02 11:07:57.000000000 +0800
+++ linux-next/include/trace/events/writeback.h	2011-05-04 14:37:35.000000000 +0800
@@ -152,6 +152,29 @@ DEFINE_WBC_EVENT(wbc_balance_dirty_writt
 DEFINE_WBC_EVENT(wbc_balance_dirty_wait);
 DEFINE_WBC_EVENT(wbc_writepage);
 
+TRACE_EVENT(writeback_queue_io,
+	TP_PROTO(struct bdi_writeback *wb,
+		 struct writeback_control *wbc,
+		 int moved),
+	TP_ARGS(wb, wbc, moved),
+	TP_STRUCT__entry(
+		__array(char,	name, 32)
+		__field(int,	older)
+		__field(int,	moved)
+	),
+	TP_fast_assign(
+		strncpy(__entry->name, dev_name(wb->bdi->dev), 32);
+		__entry->older	= wbc->older_than_this ?
+				  (jiffies - *wbc->older_than_this) * 1000 / HZ
+				  : -1;
+		__entry->moved	= moved;
+	),
+	TP_printk("bdi %s: older=%d enqueue=%d",
+		__entry->name,
+		__entry->older,
+		__entry->moved)
+);
+
 DECLARE_EVENT_CLASS(writeback_congest_waited_template,
 
 	TP_PROTO(unsigned int usec_timeout, unsigned int usec_delayed),

[-- Attachment #3: test-tar-dd.sh --]
[-- Type: application/x-sh, Size: 733 bytes --]

[-- Attachment #4: trace-2.6.39-rc3-dyn-expire+ --]
[-- Type: text/plain, Size: 85738 bytes --]

root@fat /home/wfg# bin/test-tar-dd.sh
umount: /dev/sda7: not mounted
meta-data=/dev/sda7              isize=256    agcount=4, agsize=6170464 blks
         =                       sectsz=512   attr=2
data     =                       bsize=4096   blocks=24681856, imaxpct=25
         =                       sunit=0      swidth=0 blks
naming   =version 2              bsize=4096   ascii-ci=0
log      =internal log           bsize=4096   blocks=12051, version=2
         =                       sectsz=512   sunit=0 blks, lazy-count=1
realtime =none                   extsz=4096   blocks=0, rtextents=0
bin/test-tar-dd.sh:14: no such file or directory: /debug/tracing/events/writeback/writeback_single_inode/enable
18.95 134.64
1000+0 records in
1000+0 records out
1048576000 bytes (1.0 GB) copied, 11.5855 s, 90.5 MB/s
dd if=/dev/zero of=/fs/zero bs=1M count=1000  0.00s user 2.59s system 22% cpu 11.614 total
tar jxf /dev/shm/linux-2.6.38.3.tar.bz2  12.08s user 4.43s system 55% cpu 29.862 total
59.05 401.19
elapsed: 270.38

# tracer: nop
#
#           TASK-PID    CPU#    TIMESTAMP  FUNCTION
#              | |       |          |         |
       flush-8:0-2926  [005]    19.491518: writeback_queue_io: bdi 8:0: older=30000 enqueue=0
       flush-8:0-2926  [005]    19.491521: writeback_queue_io: bdi 8:0: older=30000 enqueue=0
       flush-8:0-2926  [005]    19.491592: writeback_queue_io: bdi 8:0: older=-1 enqueue=644
       flush-8:0-2926  [005]    19.511680: writeback_queue_io: bdi 8:0: older=30000 enqueue=0
       flush-8:0-2926  [005]    19.512392: writeback_queue_io: bdi 8:0: older=30000 enqueue=0
       flush-8:0-2926  [005]    19.513408: writeback_queue_io: bdi 8:0: older=30000 enqueue=0
       flush-8:0-2926  [005]    19.514321: writeback_queue_io: bdi 8:0: older=30000 enqueue=0
       flush-8:0-2926  [005]    19.521382: writeback_queue_io: bdi 8:0: older=30000 enqueue=0
       flush-8:0-2926  [005]    19.522103: writeback_queue_io: bdi 8:0: older=30000 enqueue=0
       flush-8:0-2926  [005]    19.530078: writeback_queue_io: bdi 8:0: older=30000 enqueue=0
       flush-8:0-2926  [005]    19.530833: writeback_queue_io: bdi 8:0: older=30000 enqueue=0
       flush-8:0-2926  [005]    19.534340: writeback_queue_io: bdi 8:0: older=30000 enqueue=0
       flush-8:0-2926  [005]    19.538572: writeback_queue_io: bdi 8:0: older=30000 enqueue=0
       flush-8:0-2926  [005]    19.542839: writeback_queue_io: bdi 8:0: older=30000 enqueue=0
       flush-8:0-2926  [005]    19.547076: writeback_queue_io: bdi 8:0: older=30000 enqueue=0
       flush-8:0-2926  [005]    19.551240: writeback_queue_io: bdi 8:0: older=30000 enqueue=0
       flush-8:0-2926  [005]    19.555429: writeback_queue_io: bdi 8:0: older=30000 enqueue=0
       flush-8:0-2926  [005]    19.559650: writeback_queue_io: bdi 8:0: older=30000 enqueue=0
       flush-8:0-2926  [005]    19.563863: writeback_queue_io: bdi 8:0: older=30000 enqueue=0
       flush-8:0-2926  [005]    19.568111: writeback_queue_io: bdi 8:0: older=30000 enqueue=0
              dd-2924  [002]    19.640092: writeback_queue_io: bdi 8:0: older=-1 enqueue=1008
       flush-8:0-2926  [000]    19.934320: writeback_queue_io: bdi 8:0: older=30000 enqueue=0
       flush-8:0-2926  [004]    20.182384: writeback_queue_io: bdi 8:0: older=30000 enqueue=0
       flush-8:0-2926  [000]    20.190345: writeback_queue_io: bdi 8:0: older=30000 enqueue=0
       flush-8:0-2926  [000]    20.191834: writeback_queue_io: bdi 8:0: older=30000 enqueue=0
       flush-8:0-2926  [000]    20.192749: writeback_queue_io: bdi 8:0: older=30000 enqueue=0
              dd-2924  [003]    20.215325: writeback_queue_io: bdi 8:0: older=-1 enqueue=1031
       flush-8:0-2926  [000]    20.570616: writeback_queue_io: bdi 8:0: older=30000 enqueue=0
       flush-8:0-2926  [000]    20.571424: writeback_queue_io: bdi 8:0: older=30000 enqueue=0
       flush-8:0-2926  [000]    20.572249: writeback_queue_io: bdi 8:0: older=30000 enqueue=0
       flush-8:0-2926  [000]    20.573045: writeback_queue_io: bdi 8:0: older=30000 enqueue=0
       flush-8:0-2926  [004]    20.759429: writeback_queue_io: bdi 8:0: older=30000 enqueue=0
       flush-8:0-2926  [004]    20.760391: writeback_queue_io: bdi 8:0: older=30000 enqueue=0
       flush-8:0-2926  [004]    20.761302: writeback_queue_io: bdi 8:0: older=30000 enqueue=0
              dd-2924  [000]    20.786554: writeback_queue_io: bdi 8:0: older=-1 enqueue=1031
              dd-2924  [000]    20.790471: writeback_queue_io: bdi 8:0: older=-1 enqueue=1031
              dd-2924  [000]    20.796459: writeback_queue_io: bdi 8:0: older=-1 enqueue=1031
              dd-2924  [000]    20.814775: writeback_queue_io: bdi 8:0: older=-1 enqueue=1031
              dd-2924  [000]    20.818366: writeback_queue_io: bdi 8:0: older=-1 enqueue=1031
              dd-2924  [000]    20.822369: writeback_queue_io: bdi 8:0: older=-1 enqueue=1031
              dd-2924  [000]    20.828361: writeback_queue_io: bdi 8:0: older=-1 enqueue=1031
              dd-2924  [000]    20.838421: writeback_queue_io: bdi 8:0: older=-1 enqueue=1031
              dd-2924  [000]    20.856283: writeback_queue_io: bdi 8:0: older=-1 enqueue=1031
              dd-2924  [000]    20.894326: writeback_queue_io: bdi 8:0: older=-1 enqueue=1031
              dd-2924  [000]    20.897156: writeback_queue_io: bdi 8:0: older=-1 enqueue=1031
              dd-2924  [000]    20.901125: writeback_queue_io: bdi 8:0: older=-1 enqueue=1031
              dd-2924  [000]    20.907124: writeback_queue_io: bdi 8:0: older=-1 enqueue=1031
              dd-2924  [000]    20.918181: writeback_queue_io: bdi 8:0: older=-1 enqueue=1031
              dd-2924  [000]    20.940281: writeback_queue_io: bdi 8:0: older=-1 enqueue=1031
              dd-2924  [000]    20.942999: writeback_queue_io: bdi 8:0: older=-1 enqueue=1031
              dd-2924  [000]    20.946983: writeback_queue_io: bdi 8:0: older=-1 enqueue=1031
              dd-2924  [000]    20.952965: writeback_queue_io: bdi 8:0: older=-1 enqueue=1031
              dd-2924  [000]    20.962948: writeback_queue_io: bdi 8:0: older=-1 enqueue=1031
       flush-8:0-2926  [000]    20.968968: writeback_queue_io: bdi 8:0: older=30000 enqueue=0
       flush-8:0-2926  [000]    20.970181: writeback_queue_io: bdi 8:0: older=30000 enqueue=0
       flush-8:0-2926  [000]    20.971367: writeback_queue_io: bdi 8:0: older=30000 enqueue=0
       flush-8:0-2926  [000]    20.972552: writeback_queue_io: bdi 8:0: older=30000 enqueue=0
              dd-2924  [000]    20.985901: writeback_queue_io: bdi 8:0: older=-1 enqueue=1031
              dd-2924  [000]    20.990851: writeback_queue_io: bdi 8:0: older=-1 enqueue=1031
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      flush-0:15-2236  [004]    42.101397: writeback_queue_io: bdi 0:15: older=30000 enqueue=1
       flush-8:0-2926  [002]    42.299344: writeback_queue_io: bdi 8:0: older=30000 enqueue=0
       flush-8:0-2926  [002]    42.299346: writeback_queue_io: bdi 8:0: older=30000 enqueue=0
       flush-8:0-2926  [002]    42.301467: writeback_queue_io: bdi 8:0: older=-1 enqueue=23904
      flush-0:15-2236  [004]    47.085941: writeback_queue_io: bdi 0:15: older=30000 enqueue=6
      flush-0:15-2236  [004]    47.085979: writeback_queue_io: bdi 0:15: older=30000 enqueue=0
      flush-0:15-2236  [004]    47.085981: writeback_queue_io: bdi 0:15: older=30000 enqueue=0
      flush-0:15-2236  [004]    47.085982: writeback_queue_io: bdi 0:15: older=-1 enqueue=7
      flush-0:15-2236  [004]    48.937186: writeback_queue_io: bdi 0:15: older=-1 enqueue=7
      flush-0:15-2236  [004]    48.937304: writeback_queue_io: bdi 0:15: older=-1 enqueue=7
      flush-0:15-2236  [004]    48.937330: writeback_queue_io: bdi 0:15: older=0 enqueue=7
       flush-8:0-2926  [003]    48.947592: writeback_queue_io: bdi 8:0: older=-1 enqueue=35715
      flush-0:15-2236  [004]    53.921831: writeback_queue_io: bdi 0:15: older=30000 enqueue=0
       flush-8:0-2926  [003]    54.465097: writeback_queue_io: bdi 8:0: older=-1 enqueue=34518
       flush-8:0-2926  [003]    54.556999: writeback_queue_io: bdi 8:0: older=-1 enqueue=34271
       flush-8:0-2926  [003]    54.641888: writeback_queue_io: bdi 8:0: older=3 enqueue=34271
       flush-8:0-2926  [003]    54.733057: writeback_queue_io: bdi 8:0: older=30000 enqueue=0
      flush-0:15-2236  [004]    54.733153: writeback_queue_io: bdi 0:15: older=0 enqueue=7
      flush-0:15-2236  [004]    54.733175: writeback_queue_io: bdi 0:15: older=0 enqueue=0
       flush-8:0-2926  [003]    54.735958: writeback_queue_io: bdi 8:0: older=2 enqueue=34271
       flush-8:0-2926  [003]    57.066536: writeback_queue_io: bdi 8:0: older=2340 enqueue=3
       flush-8:0-2926  [003]    57.066544: writeback_queue_io: bdi 8:0: older=2340 enqueue=0
      flush-0:15-2236  [004]    68.683073: writeback_queue_io: bdi 0:15: older=30000 enqueue=0
      flush-0:15-2236  [004]    73.667542: writeback_queue_io: bdi 0:15: older=30000 enqueue=0
      flush-0:15-2236  [004]    78.652162: writeback_queue_io: bdi 0:15: older=30000 enqueue=0
      flush-0:15-2236  [004]    83.636732: writeback_queue_io: bdi 0:15: older=30000 enqueue=0
      flush-0:15-2236  [004]    88.621260: writeback_queue_io: bdi 0:15: older=30000 enqueue=0

[-- Attachment #5: trace-2.6.39-rc3 --]
[-- Type: text/plain, Size: 50538 bytes --]

root@fat /home/wfg# bin/test-tar-dd.sh
umount: /dev/sda7: not mounted
meta-data=/dev/sda7              isize=256    agcount=4, agsize=6170464 blks
         =                       sectsz=512   attr=2
data     =                       bsize=4096   blocks=24681856, imaxpct=25
         =                       sunit=0      swidth=0 blks
naming   =version 2              bsize=4096   ascii-ci=0
log      =internal log           bsize=4096   blocks=12051, version=2
         =                       sectsz=512   sunit=0 blks, lazy-count=1
realtime =none                   extsz=4096   blocks=0, rtextents=0
bin/test-tar-dd.sh:14: no such file or directory: /debug/tracing/events/writeback/writeback_single_inode/enable
280.90 2235.98
1000+0 records in
1000+0 records out
1048576000 bytes (1.0 GB) copied, 14.8681 s, 70.5 MB/s
dd if=/dev/zero of=/fs/zero bs=1M count=1000  0.00s user 1.48s system 9% cpu 14.888 total
tar jxf /dev/shm/linux-2.6.38.3.tar.bz2  12.42s user 4.33s system 49% cpu 33.563 total
322.49 2524.47
elapsed: 288.99000000000024

# tracer: nop
#
#           TASK-PID    CPU#    TIMESTAMP  FUNCTION
#              | |       |          |         |
       flush-8:0-2939  [006]   289.234869: writeback_queue_io: bdi 8:0: older=30000 enqueue=0
       flush-8:0-2939  [006]   289.234872: writeback_queue_io: bdi 8:0: older=-1 enqueue=1
       flush-8:0-2939  [000]   289.244973: writeback_queue_io: bdi 8:0: older=-1 enqueue=0
       flush-8:0-2939  [000]   289.249918: writeback_queue_io: bdi 8:0: older=-1 enqueue=0
       flush-8:0-2939  [000]   289.254722: writeback_queue_io: bdi 8:0: older=-1 enqueue=0
       flush-8:0-2939  [000]   289.259679: writeback_queue_io: bdi 8:0: older=-1 enqueue=0
       flush-8:0-2939  [000]   289.264460: writeback_queue_io: bdi 8:0: older=-1 enqueue=0
       flush-8:0-2939  [002]   289.270664: writeback_queue_io: bdi 8:0: older=-1 enqueue=0
       flush-8:0-2939  [002]   289.274682: writeback_queue_io: bdi 8:0: older=-1 enqueue=0
       flush-8:0-2939  [002]   289.279065: writeback_queue_io: bdi 8:0: older=-1 enqueue=0
       flush-8:0-2939  [002]   289.283450: writeback_queue_io: bdi 8:0: older=-1 enqueue=0
       flush-8:0-2939  [002]   289.287875: writeback_queue_io: bdi 8:0: older=-1 enqueue=0
       flush-8:0-2939  [002]   289.292278: writeback_queue_io: bdi 8:0: older=-1 enqueue=0
       flush-8:0-2939  [002]   289.297190: writeback_queue_io: bdi 8:0: older=-1 enqueue=0
       flush-8:0-2939  [002]   289.302320: writeback_queue_io: bdi 8:0: older=-1 enqueue=0
       flush-8:0-2939  [002]   289.307390: writeback_queue_io: bdi 8:0: older=-1 enqueue=4
       flush-8:0-2939  [002]   289.311641: writeback_queue_io: bdi 8:0: older=-1 enqueue=0
       flush-8:0-2939  [002]   289.315871: writeback_queue_io: bdi 8:0: older=-1 enqueue=4
       flush-8:0-2939  [002]   289.320143: writeback_queue_io: bdi 8:0: older=-1 enqueue=0
       flush-8:0-2939  [002]   289.324426: writeback_queue_io: bdi 8:0: older=-1 enqueue=4
       flush-8:0-2939  [002]   289.328687: writeback_queue_io: bdi 8:0: older=-1 enqueue=0
              dd-2938  [004]   289.399926: writeback_queue_io: bdi 8:0: older=-1 enqueue=4
              dd-2938  [004]   289.400601: writeback_queue_io: bdi 8:0: older=-1 enqueue=4
              dd-2938  [004]   289.402595: writeback_queue_io: bdi 8:0: older=-1 enqueue=4
              dd-2938  [004]   289.406672: writeback_queue_io: bdi 8:0: older=-1 enqueue=4
              dd-2938  [004]   289.414706: writeback_queue_io: bdi 8:0: older=-1 enqueue=4
              dd-2938  [004]   289.430701: writeback_queue_io: bdi 8:0: older=-1 enqueue=4
              dd-2938  [004]   289.462702: writeback_queue_io: bdi 8:0: older=-1 enqueue=4
              dd-2938  [004]   289.526711: writeback_queue_io: bdi 8:0: older=-1 enqueue=4
             tar-2937  [000]   289.618775: writeback_queue_io: bdi 8:0: older=-1 enqueue=5
              dd-2938  [004]   289.626643: writeback_queue_io: bdi 8:0: older=-1 enqueue=4
              dd-2938  [004]   289.738324: writeback_queue_io: bdi 8:0: older=-1 enqueue=4
              dd-2938  [004]   289.738611: writeback_queue_io: bdi 8:0: older=-1 enqueue=4
              dd-2938  [004]   289.740605: writeback_queue_io: bdi 8:0: older=-1 enqueue=4
              dd-2938  [004]   289.744693: writeback_queue_io: bdi 8:0: older=-1 enqueue=4
              dd-2938  [004]   289.752691: writeback_queue_io: bdi 8:0: older=-1 enqueue=4
      flush-0:15-2212  [007]   289.763781: writeback_queue_io: bdi 0:15: older=30000 enqueue=1
      flush-0:15-2212  [007]   289.763813: writeback_queue_io: bdi 0:15: older=-1 enqueue=8
              dd-2938  [004]   289.772835: writeback_queue_io: bdi 8:0: older=-1 enqueue=4
              dd-2938  [004]   289.773643: writeback_queue_io: bdi 8:0: older=-1 enqueue=4
              dd-2938  [004]   289.775615: writeback_queue_io: bdi 8:0: older=-1 enqueue=4
              dd-2938  [004]   289.779692: writeback_queue_io: bdi 8:0: older=-1 enqueue=4
              dd-2938  [004]   289.787702: writeback_queue_io: bdi 8:0: older=-1 enqueue=4
       flush-8:0-2939  [002]   289.788072: writeback_queue_io: bdi 8:0: older=-1 enqueue=4
              dd-2938  [004]   289.803711: writeback_queue_io: bdi 8:0: older=-1 enqueue=0
       flush-8:0-2939  [002]   289.891206: writeback_queue_io: bdi 8:0: older=-1 enqueue=0
              dd-2938  [004]   289.896533: writeback_queue_io: bdi 8:0: older=-1 enqueue=6
              dd-2938  [004]   290.045651: writeback_queue_io: bdi 8:0: older=-1 enqueue=6
              dd-2938  [004]   290.047619: writeback_queue_io: bdi 8:0: older=-1 enqueue=4
              dd-2938  [004]   290.051702: writeback_queue_io: bdi 8:0: older=-1 enqueue=4
              dd-2938  [004]   290.059724: writeback_queue_io: bdi 8:0: older=-1 enqueue=5
             tar-2937  [000]   290.067294: writeback_queue_io: bdi 8:0: older=-1 enqueue=5
       flush-8:0-2939  [002]   290.096955: writeback_queue_io: bdi 8:0: older=-1 enqueue=4
       flush-8:0-2939  [002]   290.175145: writeback_queue_io: bdi 8:0: older=-1 enqueue=2
              dd-2938  [004]   290.190908: writeback_queue_io: bdi 8:0: older=-1 enqueue=102
       flush-8:0-2939  [002]   290.381441: writeback_queue_io: bdi 8:0: older=-1 enqueue=24
       flush-8:0-2939  [002]   290.381576: writeback_queue_io: bdi 8:0: older=-1 enqueue=5
       flush-8:0-2939  [003]   290.424721: writeback_queue_io: bdi 8:0: older=-1 enqueue=146
              dd-2938  [000]   290.436335: writeback_queue_io: bdi 8:0: older=-1 enqueue=110
             tar-2937  [002]   290.436340: writeback_queue_io: bdi 8:0: older=-1 enqueue=0
              dd-2938  [000]   290.440647: writeback_queue_io: bdi 8:0: older=-1 enqueue=254
              dd-2938  [000]   290.442640: writeback_queue_io: bdi 8:0: older=-1 enqueue=254
              dd-2938  [000]   290.446674: writeback_queue_io: bdi 8:0: older=-1 enqueue=254
              dd-2938  [000]   290.454731: writeback_queue_io: bdi 8:0: older=-1 enqueue=254
              dd-2938  [000]   290.475084: writeback_queue_io: bdi 8:0: older=-1 enqueue=254
              dd-2938  [000]   290.476642: writeback_queue_io: bdi 8:0: older=-1 enqueue=254
              dd-2938  [000]   290.478640: writeback_queue_io: bdi 8:0: older=-1 enqueue=254
              dd-2938  [000]   290.482656: writeback_queue_io: bdi 8:0: older=-1 enqueue=254
              dd-2938  [000]   290.490670: writeback_queue_io: bdi 8:0: older=-1 enqueue=254
              dd-2938  [000]   290.506731: writeback_queue_io: bdi 8:0: older=-1 enqueue=254
       flush-8:0-2939  [003]   290.542023: writeback_queue_io: bdi 8:0: older=-1 enqueue=254
       flush-8:0-2939  [003]   290.542791: writeback_queue_io: bdi 8:0: older=-1 enqueue=0
              dd-2938  [000]   290.543801: writeback_queue_io: bdi 8:0: older=-1 enqueue=144
       flush-8:0-2939  [003]   290.645714: writeback_queue_io: bdi 8:0: older=-1 enqueue=255
              dd-2938  [000]   290.661384: writeback_queue_io: bdi 8:0: older=-1 enqueue=118
              dd-2938  [000]   290.662872: writeback_queue_io: bdi 8:0: older=-1 enqueue=145
             tar-2937  [000]   290.671348: writeback_queue_io: bdi 8:0: older=-1 enqueue=48
              dd-2938  [000]   291.093712: writeback_queue_io: bdi 8:0: older=-1 enqueue=280
              dd-2938  [000]   291.094604: writeback_queue_io: bdi 8:0: older=-1 enqueue=0
       flush-8:0-2939  [003]   291.196888: writeback_queue_io: bdi 8:0: older=-1 enqueue=254
       flush-8:0-2939  [003]   291.322189: writeback_queue_io: bdi 8:0: older=-1 enqueue=1
              dd-2938  [004]   291.344134: writeback_queue_io: bdi 8:0: older=-1 enqueue=40
             tar-2937  [000]   291.348827: writeback_queue_io: bdi 8:0: older=-1 enqueue=258
             tar-2937  [000]   291.350680: writeback_queue_io: bdi 8:0: older=-1 enqueue=297
             tar-2937  [000]   291.352682: writeback_queue_io: bdi 8:0: older=-1 enqueue=297
             tar-2937  [000]   291.356689: writeback_queue_io: bdi 8:0: older=-1 enqueue=297
             tar-2937  [000]   291.364708: writeback_queue_io: bdi 8:0: older=-1 enqueue=297
       flush-8:0-2939  [000]   291.374525: writeback_queue_io: bdi 8:0: older=-1 enqueue=298
       flush-8:0-2939  [000]   291.374613: writeback_queue_io: bdi 8:0: older=-1 enqueue=5
       flush-8:0-2939  [000]   291.374656: writeback_queue_io: bdi 8:0: older=-1 enqueue=0
       flush-8:0-2939  [000]   291.376586: writeback_queue_io: bdi 8:0: older=-1 enqueue=293
       flush-8:0-2939  [000]   291.377524: writeback_queue_io: bdi 8:0: older=-1 enqueue=5
       flush-8:0-2939  [000]   291.379490: writeback_queue_io: bdi 8:0: older=-1 enqueue=293
              dd-2938  [004]   291.386729: writeback_queue_io: bdi 8:0: older=-1 enqueue=51
       flush-8:0-2939  [000]   291.751020: writeback_queue_io: bdi 8:0: older=-1 enqueue=300
       flush-8:0-2939  [000]   291.889096: writeback_queue_io: bdi 8:0: older=-1 enqueue=2
              dd-2938  [000]   291.922994: writeback_queue_io: bdi 8:0: older=-1 enqueue=141
             tar-2937  [002]   291.923004: writeback_queue_io: bdi 8:0: older=-1 enqueue=1
       flush-8:0-2939  [000]   291.943943: writeback_queue_io: bdi 8:0: older=-1 enqueue=305
             tar-2937  [000]   291.962703: writeback_queue_io: bdi 8:0: older=-1 enqueue=432
             tar-2937  [000]   291.965711: writeback_queue_io: bdi 8:0: older=-1 enqueue=440
             tar-2937  [000]   291.970700: writeback_queue_io: bdi 8:0: older=-1 enqueue=440
             tar-2937  [000]   291.979722: writeback_queue_io: bdi 8:0: older=-1 enqueue=440
       flush-8:0-2939  [004]   291.989047: writeback_queue_io: bdi 8:0: older=-1 enqueue=440
              dd-2938  [000]   291.989082: writeback_queue_io: bdi 8:0: older=-1 enqueue=0
              dd-2938  [000]   291.990710: writeback_queue_io: bdi 8:0: older=-1 enqueue=440
              dd-2938  [000]   291.993718: writeback_queue_io: bdi 8:0: older=-1 enqueue=440
             tar-2937  [000]   291.996729: writeback_queue_io: bdi 8:0: older=-1 enqueue=440
              dd-2938  [000]   291.999700: writeback_queue_io: bdi 8:0: older=-1 enqueue=440
              dd-2938  [000]   292.009794: writeback_queue_io: bdi 8:0: older=-1 enqueue=440
              dd-2938  [003]   292.038604: writeback_queue_io: bdi 8:0: older=-1 enqueue=490
       flush-8:0-2939  [000]   292.078232: writeback_queue_io: bdi 8:0: older=-1 enqueue=142
       flush-8:0-2939  [001]   292.110171: writeback_queue_io: bdi 8:0: older=-1 enqueue=301
       flush-8:0-2939  [001]   293.075697: writeback_queue_io: bdi 8:0: older=-1 enqueue=5
       flush-8:0-2939  [001]   293.078623: writeback_queue_io: bdi 8:0: older=-1 enqueue=496
       flush-8:0-2939  [001]   293.080842: writeback_queue_io: bdi 8:0: older=-1 enqueue=12
       flush-8:0-2939  [001]   293.085045: writeback_queue_io: bdi 8:0: older=-1 enqueue=15
       flush-8:0-2939  [001]   293.088241: writeback_queue_io: bdi 8:0: older=-1 enqueue=494
       flush-8:0-2939  [001]   293.090036: writeback_queue_io: bdi 8:0: older=-1 enqueue=27
       flush-8:0-2939  [001]   293.092962: writeback_queue_io: bdi 8:0: older=-1 enqueue=494
       flush-8:0-2939  [001]   293.094561: writeback_queue_io: bdi 8:0: older=-1 enqueue=12
       flush-8:0-2939  [001]   293.095628: writeback_queue_io: bdi 8:0: older=-1 enqueue=15
       flush-8:0-2939  [001]   293.098615: writeback_queue_io: bdi 8:0: older=-1 enqueue=506
       flush-8:0-2939  [001]   293.099645: writeback_queue_io: bdi 8:0: older=-1 enqueue=15
       flush-8:0-2939  [001]   293.102537: writeback_queue_io: bdi 8:0: older=-1 enqueue=506
       flush-8:0-2939  [001]   293.103571: writeback_queue_io: bdi 8:0: older=-1 enqueue=15
       flush-8:0-2939  [001]   293.106481: writeback_queue_io: bdi 8:0: older=-1 enqueue=506
       flush-8:0-2939  [001]   293.107516: writeback_queue_io: bdi 8:0: older=-1 enqueue=15
       flush-8:0-2939  [001]   293.110467: writeback_queue_io: bdi 8:0: older=-1 enqueue=506
       flush-8:0-2939  [001]   293.111475: writeback_queue_io: bdi 8:0: older=-1 enqueue=15
              dd-2938  [003]   293.146707: writeback_queue_io: bdi 8:0: older=-1 enqueue=642
             tar-2937  [004]   293.153753: writeback_queue_io: bdi 8:0: older=-1 enqueue=277
       flush-8:0-2939  [000]   293.315851: writeback_queue_io: bdi 8:0: older=-1 enqueue=15
       flush-8:0-2939  [000]   293.338781: writeback_queue_io: bdi 8:0: older=-1 enqueue=379
              dd-2938  [004]   293.353306: writeback_queue_io: bdi 8:0: older=-1 enqueue=263
       flush-8:0-2939  [000]   293.353349: writeback_queue_io: bdi 8:0: older=-1 enqueue=8
       flush-8:0-2939  [000]   293.354913: writeback_queue_io: bdi 8:0: older=-1 enqueue=649
             tar-2937  [004]   293.356764: writeback_queue_io: bdi 8:0: older=-1 enqueue=394
       flush-8:0-2939  [000]   293.418244: writeback_queue_io: bdi 8:0: older=-1 enqueue=839
              dd-2938  [004]   293.426899: writeback_queue_io: bdi 8:0: older=-1 enqueue=0
       flush-8:0-2939  [000]   293.555279: writeback_queue_io: bdi 8:0: older=-1 enqueue=657
      flush-0:15-2212  [007]   294.763913: writeback_queue_io: bdi 0:15: older=30000 enqueue=3
      flush-0:15-2212  [007]   294.763935: writeback_queue_io: bdi 0:15: older=-1 enqueue=8
       flush-8:0-2939  [003]   295.266112: writeback_queue_io: bdi 8:0: older=30007 enqueue=0
       flush-8:0-2939  [003]   295.266716: writeback_queue_io: bdi 8:0: older=30007 enqueue=0
       flush-8:0-2939  [003]   295.267359: writeback_queue_io: bdi 8:0: older=30008 enqueue=0
       flush-8:0-2939  [003]   295.268065: writeback_queue_io: bdi 8:0: older=30009 enqueue=0
       flush-8:0-2939  [003]   295.268738: writeback_queue_io: bdi 8:0: older=30009 enqueue=0
       flush-8:0-2939  [003]   295.269423: writeback_queue_io: bdi 8:0: older=30010 enqueue=0
       flush-8:0-2939  [003]   295.270078: writeback_queue_io: bdi 8:0: older=30011 enqueue=0
       flush-8:0-2939  [003]   295.270734: writeback_queue_io: bdi 8:0: older=30011 enqueue=0
       flush-8:0-2939  [003]   295.271391: writeback_queue_io: bdi 8:0: older=30012 enqueue=0
       flush-8:0-2939  [003]   295.272063: writeback_queue_io: bdi 8:0: older=30013 enqueue=0
       flush-8:0-2939  [003]   295.272707: writeback_queue_io: bdi 8:0: older=30013 enqueue=0
       flush-8:0-2939  [003]   295.273389: writeback_queue_io: bdi 8:0: older=30014 enqueue=0
       flush-8:0-2939  [003]   295.274075: writeback_queue_io: bdi 8:0: older=30015 enqueue=0
       flush-8:0-2939  [003]   295.274733: writeback_queue_io: bdi 8:0: older=30015 enqueue=0
       flush-8:0-2939  [003]   295.275392: writeback_queue_io: bdi 8:0: older=30016 enqueue=0
              dd-2938  [002]   295.337571: writeback_queue_io: bdi 8:0: older=-1 enqueue=981
       flush-8:0-2939  [003]   295.530905: writeback_queue_io: bdi 8:0: older=-1 enqueue=600
       flush-8:0-2939  [007]   295.537538: writeback_queue_io: bdi 8:0: older=-1 enqueue=982
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      flush-0:15-2212  [007]   657.624764: writeback_queue_io: bdi 0:15: older=30000 enqueue=0

Re: [PATCH 6/6] writeback: refill b_io iff empty

[Jan Kara]

On Wed 04-05-11 15:39:31, Wu Fengguang wrote:
> To help understand the behavior change, I wrote the writeback_queue_io
> trace event, and found very different patterns between
> - vanilla kernel
> - this patchset plus the sync livelock fixes
> 
> Basically the vanilla kernel each time pulls a random number of inodes
> from b_dirty, while the patched kernel tends to pull a fixed number of
> inodes (enqueue=1031) from b_dirty. The new behavior is very interesting...
  This regularity is really strange. Did you have a chance to look more into
it? I find it highly unlikely that there would be exactly 1031 dirty inodes
in b_dirty list every time you call move_expired_inodes()...

								Honza
-- 
Jan Kara <jack@suse.cz>
SUSE Labs, CR

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Re: [PATCH 6/6] writeback: refill b_io iff empty

[Wu Fengguang]

On Fri, May 06, 2011 at 12:37:08AM +0800, Jan Kara wrote:
> On Wed 04-05-11 15:39:31, Wu Fengguang wrote:
> > To help understand the behavior change, I wrote the writeback_queue_io
> > trace event, and found very different patterns between
> > - vanilla kernel
> > - this patchset plus the sync livelock fixes
> > 
> > Basically the vanilla kernel each time pulls a random number of inodes
> > from b_dirty, while the patched kernel tends to pull a fixed number of
> > inodes (enqueue=1031) from b_dirty. The new behavior is very interesting...
>   This regularity is really strange. Did you have a chance to look more into
> it? I find it highly unlikely that there would be exactly 1031 dirty inodes
> in b_dirty list every time you call move_expired_inodes()...

Yeah that's the weird point. The other things I noticed are more
regular "flusher - dd - flusher - dd - ..." writeout patterns after
the patches.  In vanilla kernel it behaves more randomly and there are
many balance_dirty_pages() IOs from tar.

I'll try to collect more traces in ext4 tomorrow. Sorry it's too late
for me now.

Thanks,
Fengguang

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Re: [PATCH 6/6] writeback: refill b_io iff empty

[Wu Fengguang]

On Fri, May 06, 2011 at 12:37:08AM +0800, Jan Kara wrote:
> On Wed 04-05-11 15:39:31, Wu Fengguang wrote:
> > To help understand the behavior change, I wrote the writeback_queue_io
> > trace event, and found very different patterns between
> > - vanilla kernel
> > - this patchset plus the sync livelock fixes
> > 
> > Basically the vanilla kernel each time pulls a random number of inodes
> > from b_dirty, while the patched kernel tends to pull a fixed number of
> > inodes (enqueue=1031) from b_dirty. The new behavior is very interesting...
>   This regularity is really strange. Did you have a chance to look more into
> it? I find it highly unlikely that there would be exactly 1031 dirty inodes
> in b_dirty list every time you call move_expired_inodes()...

Jan, I got some results for ext4. The total dd+tar+sync time is
decreased from 177s to 167s. The other numbers are either raised or
dropped.

dd-tar-ext4-patched:elapsed: 177.4900000000016
dd-tar-ext4-patched:elapsed: 166.40000000000146
dd-tar-ext4-patched:elapsed: 164.33000000000175
dd-tar-ext4-patched:elapsed: 176.36999999999898
dd-tar-ext4-patched:elapsed: 152.84000000000015

avg        167.486
stddev       8.996

dd-tar-ext4-vanilla:elapsed: 172.08999999999924
dd-tar-ext4-vanilla:elapsed: 170.50999999999931
dd-tar-ext4-vanilla:elapsed: 183.61999999999989
dd-tar-ext4-vanilla:elapsed: 187.69999999999982
dd-tar-ext4-vanilla:elapsed: 174.8100000000004

avg        177.746
stddev       6.731


dd-tar-ext4-patched:dd if=/dev/zero of=/fs/zero bs=1M count=1000  0.00s user 1.66s system 9% cpu 16.922 total
dd-tar-ext4-patched:dd if=/dev/zero of=/fs/zero bs=1M count=1000  0.00s user 1.70s system 8% cpu 19.681 total
dd-tar-ext4-patched:dd if=/dev/zero of=/fs/zero bs=1M count=1000  0.00s user 1.69s system 8% cpu 19.041 total
dd-tar-ext4-patched:dd if=/dev/zero of=/fs/zero bs=1M count=1000  0.00s user 1.69s system 9% cpu 18.632 total
dd-tar-ext4-patched:dd if=/dev/zero of=/fs/zero bs=1M count=1000  0.00s user 1.70s system 9% cpu 18.478 total

avg          0.000      1.688      8.600     18.551
stddev       0.000      0.015      0.490      0.915

dd-tar-ext4-vanilla:dd if=/dev/zero of=/fs/zero bs=1M count=1000  0.00s user 1.67s system 8% cpu 19.658 total
dd-tar-ext4-vanilla:dd if=/dev/zero of=/fs/zero bs=1M count=1000  0.00s user 1.67s system 8% cpu 18.663 total
dd-tar-ext4-vanilla:dd if=/dev/zero of=/fs/zero bs=1M count=1000  0.00s user 1.70s system 8% cpu 19.970 total
dd-tar-ext4-vanilla:dd if=/dev/zero of=/fs/zero bs=1M count=1000  0.00s user 1.66s system 7% cpu 20.985 total
dd-tar-ext4-vanilla:dd if=/dev/zero of=/fs/zero bs=1M count=1000  0.00s user 1.66s system 8% cpu 19.806 total

avg          0.000      1.672      7.800     19.816
stddev       0.000      0.015      0.400      0.741


dd-tar-ext4-patched:tar jxf /dev/shm/linux-2.6.38.3.tar.bz2  12.08s user 3.51s system 71% cpu 21.677 total
dd-tar-ext4-patched:tar jxf /dev/shm/linux-2.6.38.3.tar.bz2  12.07s user 3.73s system 80% cpu 19.679 total
dd-tar-ext4-patched:tar jxf /dev/shm/linux-2.6.38.3.tar.bz2  12.43s user 3.09s system 79% cpu 19.444 total
dd-tar-ext4-patched:tar jxf /dev/shm/linux-2.6.38.3.tar.bz2  12.52s user 3.14s system 80% cpu 19.510 total
dd-tar-ext4-patched:tar jxf /dev/shm/linux-2.6.38.3.tar.bz2  12.38s user 3.15s system 92% cpu 16.701 total

avg         12.296      3.324     80.400     19.402
stddev       0.186      0.252      6.711      1.585

dd-tar-ext4-vanilla:tar jxf /dev/shm/linux-2.6.38.3.tar.bz2  12.34s user 3.26s system 96% cpu 16.155 total
dd-tar-ext4-vanilla:tar jxf /dev/shm/linux-2.6.38.3.tar.bz2  12.70s user 3.52s system 97% cpu 16.694 total
dd-tar-ext4-vanilla:tar jxf /dev/shm/linux-2.6.38.3.tar.bz2  12.47s user 3.31s system 92% cpu 17.017 total
dd-tar-ext4-vanilla:tar jxf /dev/shm/linux-2.6.38.3.tar.bz2  12.36s user 3.19s system 86% cpu 17.885 total
dd-tar-ext4-vanilla:tar jxf /dev/shm/linux-2.6.38.3.tar.bz2  12.46s user 3.17s system 101% cpu 15.382 total

avg         12.466      3.290     94.400     16.627
stddev       0.128      0.125      5.083      0.838

patched trace-tar-dd-ext4-2.6.39-rc3+

       flush-8:0-3048  [000]  1902.672610: writeback_queue_io: bdi 8:0: older=4296543506 age=30000 enqueue=0
       flush-8:0-3048  [000]  1905.209570: writeback_queue_io: bdi 8:0: older=4296546051 age=30000 enqueue=0
       flush-8:0-3048  [000]  1907.294936: writeback_queue_io: bdi 8:0: older=4296548143 age=30000 enqueue=0
       flush-8:0-3048  [004]  1909.607301: writeback_queue_io: bdi 8:0: older=4296550462 age=30000 enqueue=0
       flush-8:0-3048  [003]  1912.290627: writeback_queue_io: bdi 8:0: older=4296553154 age=30000 enqueue=0
       flush-8:0-3048  [001]  1914.331197: writeback_queue_io: bdi 8:0: older=4296555201 age=30000 enqueue=0
      flush-0:15-2283  [002]  1924.729828: writeback_queue_io: bdi 0:15: older=4296565632 age=30000 enqueue=1
       flush-8:0-3048  [000]  1927.275838: writeback_queue_io: bdi 8:0: older=4296568186 age=30000 enqueue=0
       flush-8:0-3048  [000]  1927.277794: writeback_queue_io: bdi 8:0: older=4296568188 age=30000 enqueue=0
       flush-8:0-3048  [000]  1927.279504: writeback_queue_io: bdi 8:0: older=4296568189 age=30000 enqueue=0
       flush-8:0-3048  [000]  1927.279923: writeback_queue_io: bdi 8:0: older=4296568190 age=30000 enqueue=0
      flush-0:15-2283  [002]  1929.714335: writeback_queue_io: bdi 0:15: older=4296570632 age=30000 enqueue=2
      flush-0:15-2283  [002]  1929.979616: writeback_queue_io: bdi 0:15: older=4296600898 age=0 enqueue=10
      flush-0:15-2283  [002]  1929.979675: writeback_queue_io: bdi 0:15: older=4296600898 age=0 enqueue=10
       flush-8:0-3048  [004]  1929.981734: writeback_queue_io: bdi 8:0: older=4296600898 age=2 enqueue=13227
       flush-8:0-3048  [000]  1932.840150: writeback_queue_io: bdi 8:0: older=4296600898 age=2869 enqueue=0
       flush-8:0-3048  [000]  1932.840781: writeback_queue_io: bdi 8:0: older=4296603768 age=0 enqueue=0
       flush-8:0-3048  [000]  1932.840787: writeback_queue_io: bdi 8:0: older=4296573768 age=30000 enqueue=0
      flush-0:15-2283  [002]  1932.991221: writeback_queue_io: bdi 0:15: older=4296603919 age=0 enqueue=10
      flush-0:15-2283  [002]  1932.991282: writeback_queue_io: bdi 0:15: older=4296603919 age=0 enqueue=0
       flush-8:0-3048  [004]  1932.991596: writeback_queue_io: bdi 8:0: older=4296603919 age=0 enqueue=1
       flush-8:0-3048  [004]  1937.975765: writeback_queue_io: bdi 8:0: older=4296578919 age=30000 enqueue=0
       flush-8:0-3048  [004]  1942.960305: writeback_queue_io: bdi 8:0: older=4296583919 age=30000 enqueue=0
       flush-8:0-3048  [004]  1947.944925: writeback_queue_io: bdi 8:0: older=4296588919 age=30000 enqueue=0
       flush-8:0-3048  [004]  1952.929427: writeback_queue_io: bdi 8:0: older=4296593919 age=30000 enqueue=0
       flush-8:0-3048  [004]  1957.914031: writeback_queue_io: bdi 8:0: older=4296598919 age=30000 enqueue=0
       flush-8:0-3048  [004]  1962.898507: writeback_queue_io: bdi 8:0: older=4296603919 age=30000 enqueue=1
       flush-8:0-3048  [004]  1962.898518: writeback_queue_io: bdi 8:0: older=4296603919 age=30000 enqueue=0

vanilla trace-tar-dd-ext4-2.6.39-rc3

       flush-8:0-2911  [002]    53.756624: writeback_queue_io: bdi 8:0: older=4294690962 age=30000 enqueue=1
       flush-8:0-2911  [002]    53.756738: writeback_queue_io: bdi 8:0: older=0 age=-1 enqueue=1184
      flush-0:15-2214  [001]    56.960369: writeback_queue_io: bdi 0:15: older=4294694176 age=30000 enqueue=0
      flush-0:15-2214  [001]    56.960373: writeback_queue_io: bdi 0:15: older=0 age=-1 enqueue=7
       flush-8:0-2911  [004]    57.447062: writeback_queue_io: bdi 8:0: older=0 age=-1 enqueue=4479
       flush-8:0-2911  [004]    57.482760: writeback_queue_io: bdi 8:0: older=0 age=-1 enqueue=58
       flush-8:0-2911  [004]    57.492041: writeback_queue_io: bdi 8:0: older=0 age=-1 enqueue=12
       flush-8:0-2911  [004]    57.613401: writeback_queue_io: bdi 8:0: older=0 age=-1 enqueue=198
       flush-8:0-2911  [004]    61.569241: writeback_queue_io: bdi 8:0: older=0 age=-1 enqueue=229
       flush-8:0-2911  [004]    61.589268: writeback_queue_io: bdi 8:0: older=0 age=-1 enqueue=141
       flush-8:0-2911  [004]    61.607471: writeback_queue_io: bdi 8:0: older=0 age=-1 enqueue=209
       flush-8:0-2911  [004]    61.619094: writeback_queue_io: bdi 8:0: older=0 age=-1 enqueue=0
       flush-8:0-2911  [004]    61.629282: writeback_queue_io: bdi 8:0: older=0 age=-1 enqueue=0
      flush-0:15-2214  [001]    61.945027: writeback_queue_io: bdi 0:15: older=4294699176 age=30000 enqueue=0
      flush-0:15-2214  [001]    61.945032: writeback_queue_io: bdi 0:15: older=0 age=-1 enqueue=7
       flush-8:0-2911  [001]    63.715007: writeback_queue_io: bdi 8:0: older=4294698964 age=31987 enqueue=0
       flush-8:0-2911  [000]    66.469285: writeback_queue_io: bdi 8:0: older=4294698964 age=34750 enqueue=0
      flush-0:15-2214  [005]    66.929422: writeback_queue_io: bdi 0:15: older=4294704176 age=30000 enqueue=0
      flush-0:15-2214  [005]    66.929428: writeback_queue_io: bdi 0:15: older=0 age=-1 enqueue=7
       flush-8:0-2911  [000]    68.377843: writeback_queue_io: bdi 8:0: older=4294698964 age=36664 enqueue=0
      flush-0:15-2214  [005]    71.913983: writeback_queue_io: bdi 0:15: older=4294709176 age=30000 enqueue=1
       flush-8:0-2911  [004]    74.365281: writeback_queue_io: bdi 8:0: older=4294711634 age=30000 enqueue=0
       flush-8:0-2911  [000]    74.821770: writeback_queue_io: bdi 8:0: older=4294711634 age=30458 enqueue=0
      flush-0:15-2214  [005]    76.898540: writeback_queue_io: bdi 0:15: older=4294714176 age=30000 enqueue=5
       flush-8:0-2911  [004]    77.158312: writeback_queue_io: bdi 8:0: older=0 age=-1 enqueue=18938
       flush-8:0-2911  [004]    77.235169: writeback_queue_io: bdi 8:0: older=0 age=-1 enqueue=185
       flush-8:0-2911  [004]    77.388776: writeback_queue_io: bdi 8:0: older=0 age=-1 enqueue=455
       flush-8:0-2911  [004]    77.462484: writeback_queue_io: bdi 8:0: older=0 age=-1 enqueue=187
       flush-8:0-2911  [004]    77.541086: writeback_queue_io: bdi 8:0: older=0 age=-1 enqueue=97
       flush-8:0-2911  [004]    77.619482: writeback_queue_io: bdi 8:0: older=0 age=-1 enqueue=126
       flush-8:0-2911  [004]    77.810862: writeback_queue_io: bdi 8:0: older=0 age=-1 enqueue=265
       flush-8:0-2911  [006]    77.924553: writeback_queue_io: bdi 8:0: older=0 age=-1 enqueue=209
       flush-8:0-2911  [003]    78.034276: writeback_queue_io: bdi 8:0: older=0 age=-1 enqueue=234
       flush-8:0-2911  [003]    78.108989: writeback_queue_io: bdi 8:0: older=0 age=-1 enqueue=148
       flush-8:0-2911  [003]    78.179240: writeback_queue_io: bdi 8:0: older=0 age=-1 enqueue=162
       flush-8:0-2911  [003]    78.348585: writeback_queue_io: bdi 8:0: older=0 age=-1 enqueue=406
       flush-8:0-2911  [003]    78.476980: writeback_queue_io: bdi 8:0: older=0 age=-1 enqueue=36
       flush-8:0-2911  [003]    78.580621: writeback_queue_io: bdi 8:0: older=0 age=-1 enqueue=144
       flush-8:0-2911  [003]    78.754257: writeback_queue_io: bdi 8:0: older=0 age=-1 enqueue=366
       flush-8:0-2911  [003]    78.858451: writeback_queue_io: bdi 8:0: older=0 age=-1 enqueue=184
       flush-8:0-2911  [003]    78.945059: writeback_queue_io: bdi 8:0: older=0 age=-1 enqueue=228
       flush-8:0-2911  [003]    79.075494: writeback_queue_io: bdi 8:0: older=0 age=-1 enqueue=267
       flush-8:0-2911  [003]    79.152004: writeback_queue_io: bdi 8:0: older=0 age=-1 enqueue=56
       flush-8:0-2911  [003]    79.238366: writeback_queue_io: bdi 8:0: older=0 age=-1 enqueue=145
      flush-0:15-2214  [005]    81.883169: writeback_queue_io: bdi 0:15: older=4294719176 age=30000 enqueue=1
      flush-0:15-2214  [005]    82.457961: writeback_queue_io: bdi 0:15: older=0 age=-1 enqueue=7
      flush-0:15-2214  [005]    82.457985: writeback_queue_io: bdi 0:15: older=0 age=-1 enqueue=7
       flush-8:0-2911  [000]    82.461064: writeback_queue_io: bdi 8:0: older=0 age=-1 enqueue=6957
       flush-8:0-2911  [000]    82.465738: writeback_queue_io: bdi 8:0: older=0 age=-1 enqueue=0
       flush-8:0-2911  [000]    83.084199: writeback_queue_io: bdi 8:0: older=0 age=-1 enqueue=0
       flush-8:0-2911  [000]    83.091283: writeback_queue_io: bdi 8:0: older=0 age=-1 enqueue=0
       flush-8:0-2911  [000]    83.097138: writeback_queue_io: bdi 8:0: older=0 age=-1 enqueue=0
       flush-8:0-2911  [000]    83.101489: writeback_queue_io: bdi 8:0: older=0 age=-1 enqueue=0
       flush-8:0-2911  [000]    83.105795: writeback_queue_io: bdi 8:0: older=0 age=-1 enqueue=0
       flush-8:0-2911  [000]    83.111433: writeback_queue_io: bdi 8:0: older=0 age=-1 enqueue=0
       flush-8:0-2911  [000]    83.113795: writeback_queue_io: bdi 8:0: older=0 age=-1 enqueue=0
       flush-8:0-2911  [000]    83.118674: writeback_queue_io: bdi 8:0: older=0 age=-1 enqueue=0
       flush-8:0-2911  [000]    83.123061: writeback_queue_io: bdi 8:0: older=0 age=-1 enqueue=0
       flush-8:0-2911  [000]    83.127796: writeback_queue_io: bdi 8:0: older=0 age=-1 enqueue=0
       flush-8:0-2911  [000]    83.318828: writeback_queue_io: bdi 8:0: older=0 age=-1 enqueue=0
       flush-8:0-2911  [000]    83.335335: writeback_queue_io: bdi 8:0: older=0 age=-1 enqueue=0
       flush-8:0-2911  [000]    83.513142: writeback_queue_io: bdi 8:0: older=0 age=-1 enqueue=0
       flush-8:0-2911  [000]    83.671440: writeback_queue_io: bdi 8:0: older=0 age=-1 enqueue=0
       flush-8:0-2911  [000]    83.727269: writeback_queue_io: bdi 8:0: older=0 age=-1 enqueue=0
       flush-8:0-2911  [000]    83.800181: writeback_queue_io: bdi 8:0: older=0 age=-1 enqueue=0
       flush-8:0-2911  [000]    83.827915: writeback_queue_io: bdi 8:0: older=0 age=-1 enqueue=0
       flush-8:0-2911  [000]    83.890632: writeback_queue_io: bdi 8:0: older=0 age=-1 enqueue=0
       flush-8:0-2911  [000]    83.930052: writeback_queue_io: bdi 8:0: older=0 age=-1 enqueue=0
       flush-8:0-2911  [000]    83.950224: writeback_queue_io: bdi 8:0: older=0 age=-1 enqueue=0
       flush-8:0-2911  [000]    83.980423: writeback_queue_io: bdi 8:0: older=0 age=-1 enqueue=0
       flush-8:0-2911  [000]    84.022254: writeback_queue_io: bdi 8:0: older=0 age=-1 enqueue=0
       flush-8:0-2911  [000]    84.140787: writeback_queue_io: bdi 8:0: older=0 age=-1 enqueue=0
       flush-8:0-2911  [000]    84.312729: writeback_queue_io: bdi 8:0: older=0 age=-1 enqueue=0
       flush-8:0-2911  [000]    84.379059: writeback_queue_io: bdi 8:0: older=0 age=-1 enqueue=0
       flush-8:0-2911  [000]    84.420117: writeback_queue_io: bdi 8:0: older=0 age=-1 enqueue=0
       flush-8:0-2911  [000]    84.473221: writeback_queue_io: bdi 8:0: older=0 age=-1 enqueue=0
       flush-8:0-2911  [000]    84.501959: writeback_queue_io: bdi 8:0: older=0 age=-1 enqueue=0
       flush-8:0-2911  [000]    84.589525: writeback_queue_io: bdi 8:0: older=0 age=-1 enqueue=0
       flush-8:0-2911  [000]    84.696628: writeback_queue_io: bdi 8:0: older=0 age=-1 enqueue=0
       flush-8:0-2911  [000]    84.699403: writeback_queue_io: bdi 8:0: older=0 age=-1 enqueue=0
       flush-8:0-2911  [000]    84.792484: writeback_queue_io: bdi 8:0: older=0 age=-1 enqueue=0
       flush-8:0-2911  [000]    84.920198: writeback_queue_io: bdi 8:0: older=0 age=-1 enqueue=0
       flush-8:0-2911  [000]    85.003982: writeback_queue_io: bdi 8:0: older=0 age=-1 enqueue=0
       flush-8:0-2911  [000]    85.006321: writeback_queue_io: bdi 8:0: older=0 age=-1 enqueue=0
       flush-8:0-2911  [000]    85.008473: writeback_queue_io: bdi 8:0: older=0 age=-1 enqueue=0
       flush-8:0-2911  [000]    85.009997: writeback_queue_io: bdi 8:0: older=0 age=-1 enqueue=0
       flush-8:0-2911  [000]    85.010003: writeback_queue_io: bdi 8:0: older=4294722312 age=30000 enqueue=0
      flush-0:15-2214  [005]    85.245018: writeback_queue_io: bdi 0:15: older=0 age=-1 enqueue=7
       flush-8:0-2911  [000]    85.245369: writeback_queue_io: bdi 8:0: older=0 age=-1 enqueue=1
       flush-8:0-2911  [000]    90.229292: writeback_queue_io: bdi 8:0: older=4294727548 age=30000 enqueue=0
       flush-8:0-2911  [000]    95.213838: writeback_queue_io: bdi 8:0: older=4294732548 age=30000 enqueue=0
      flush-0:15-2214  [005]    98.671161: writeback_queue_io: bdi 0:15: older=4294736016 age=30000 enqueue=0
       flush-8:0-2911  [000]   100.198391: writeback_queue_io: bdi 8:0: older=4294737548 age=30000 enqueue=0
      flush-0:15-2214  [005]   103.655662: writeback_queue_io: bdi 0:15: older=4294741016 age=30000 enqueue=0
       flush-8:0-2911  [000]   105.182941: writeback_queue_io: bdi 8:0: older=4294742548 age=30000 enqueue=1
      flush-0:15-2214  [005]   108.640284: writeback_queue_io: bdi 0:15: older=4294746016 age=30000 enqueue=0
      flush-0:15-2214  [005]   113.624829: writeback_queue_io: bdi 0:15: older=4294751016 age=30000 enqueue=0
      flush-0:15-2214  [005]   118.609396: writeback_queue_io: bdi 0:15: older=4294756016 age=30000 enqueue=0
      flush-0:15-2214  [005]   123.593932: writeback_queue_io: bdi 0:15: older=4294761016 age=30000 enqueue=1
      flush-0:15-2214  [005]   128.578494: writeback_queue_io: bdi 0:15: older=4294766016 age=30000 enqueue=0
      flush-0:15-2214  [005]   133.563026: writeback_queue_io: bdi 0:15: older=4294771016 age=30000 enqueue=0
      flush-0:15-2214  [005]   138.547592: writeback_queue_io: bdi 0:15: older=4294776016 age=30000 enqueue=0
      flush-0:15-2214  [005]   143.532126: writeback_queue_io: bdi 0:15: older=4294781016 age=30000 enqueue=0
      flush-0:15-2214  [005]   148.516696: writeback_queue_io: bdi 0:15: older=4294786016 age=30000 enqueue=2
      flush-0:15-2214  [005]   153.501234: writeback_queue_io: bdi 0:15: older=4294791016 age=30000 enqueue=1
      flush-0:15-2214  [005]   158.485800: writeback_queue_io: bdi 0:15: older=4294796016 age=30000 enqueue=0
      flush-0:15-2214  [005]   163.470348: writeback_queue_io: bdi 0:15: older=4294801016 age=30000 enqueue=0
      flush-0:15-2214  [005]   168.454905: writeback_queue_io: bdi 0:15: older=4294806016 age=30000 enqueue=0
      flush-0:15-2214  [005]   173.439445: writeback_queue_io: bdi 0:15: older=4294811016 age=30000 enqueue=0
      flush-0:15-2214  [005]   178.424001: writeback_queue_io: bdi 0:15: older=4294816016 age=30000 enqueue=2
      flush-0:15-2214  [005]   183.408546: writeback_queue_io: bdi 0:15: older=4294821016 age=30000 enqueue=1
      flush-0:15-2214  [005]   188.393102: writeback_queue_io: bdi 0:15: older=4294826016 age=30000 enqueue=0
      flush-0:15-2214  [005]   193.377653: writeback_queue_io: bdi 0:15: older=4294831016 age=30000 enqueue=0
      flush-0:15-2214  [005]   198.362203: writeback_queue_io: bdi 0:15: older=4294836016 age=30000 enqueue=0
      flush-0:15-2214  [005]   203.346749: writeback_queue_io: bdi 0:15: older=4294841016 age=30000 enqueue=0
      flush-0:15-2214  [005]   208.331306: writeback_queue_io: bdi 0:15: older=4294846016 age=30000 enqueue=2
      flush-0:15-2214  [005]   213.315844: writeback_queue_io: bdi 0:15: older=4294851016 age=30000 enqueue=1
      flush-0:15-2214  [005]   218.300404: writeback_queue_io: bdi 0:15: older=4294856016 age=30000 enqueue=0
      flush-0:15-2214  [005]   223.284955: writeback_queue_io: bdi 0:15: older=4294861016 age=30000 enqueue=0
      flush-0:15-2214  [005]   228.269515: writeback_queue_io: bdi 0:15: older=4294866016 age=30000 enqueue=0
      flush-0:15-2214  [005]   233.254057: writeback_queue_io: bdi 0:15: older=4294871016 age=30000 enqueue=0
      flush-0:15-2214  [005]   238.238619: writeback_queue_io: bdi 0:15: older=4294876016 age=30000 enqueue=2
      flush-0:15-2214  [005]   243.223157: writeback_queue_io: bdi 0:15: older=4294881016 age=30000 enqueue=1
      flush-0:15-2214  [005]   248.207715: writeback_queue_io: bdi 0:15: older=4294886016 age=30000 enqueue=0
      flush-0:15-2214  [005]   253.192251: writeback_queue_io: bdi 0:15: older=4294891016 age=30000 enqueue=0
      flush-0:15-2214  [005]   258.176824: writeback_queue_io: bdi 0:15: older=4294896016 age=30000 enqueue=0
      flush-0:15-2214  [005]   263.161348: writeback_queue_io: bdi 0:15: older=4294901016 age=30000 enqueue=0
      flush-0:15-2214  [005]   268.145922: writeback_queue_io: bdi 0:15: older=4294906016 age=30000 enqueue=2
      flush-0:15-2214  [005]   273.130463: writeback_queue_io: bdi 0:15: older=4294911016 age=30000 enqueue=1
      flush-0:15-2214  [005]   278.115008: writeback_queue_io: bdi 0:15: older=4294916016 age=30000 enqueue=0
      flush-0:15-2214  [005]   283.099572: writeback_queue_io: bdi 0:15: older=4294921016 age=30000 enqueue=0
      flush-0:15-2214  [005]   288.084050: writeback_queue_io: bdi 0:15: older=4294926016 age=30000 enqueue=0
      flush-0:15-2214  [005]   293.068668: writeback_queue_io: bdi 0:15: older=4294931016 age=30000 enqueue=0
      flush-0:15-2214  [005]   298.053228: writeback_queue_io: bdi 0:15: older=4294936016 age=30000 enqueue=2
      flush-0:15-2214  [005]   303.037756: writeback_queue_io: bdi 0:15: older=4294941016 age=30000 enqueue=1
      flush-0:15-2214  [005]   308.022329: writeback_queue_io: bdi 0:15: older=4294946016 age=30000 enqueue=0
      flush-0:15-2214  [005]   313.006864: writeback_queue_io: bdi 0:15: older=4294951016 age=30000 enqueue=0
      flush-0:15-2214  [005]   317.991431: writeback_queue_io: bdi 0:15: older=4294956016 age=30000 enqueue=0
      flush-0:15-2214  [005]   322.975973: writeback_queue_io: bdi 0:15: older=4294961016 age=30000 enqueue=0
      flush-0:15-2214  [005]   327.960530: writeback_queue_io: bdi 0:15: older=4294966016 age=30000 enqueue=2
      flush-0:15-2214  [005]   332.945074: writeback_queue_io: bdi 0:15: older=4294971016 age=30000 enqueue=1
      flush-0:15-2214  [005]   337.929629: writeback_queue_io: bdi 0:15: older=4294976016 age=30000 enqueue=0
      flush-0:15-2214  [005]   342.914183: writeback_queue_io: bdi 0:15: older=4294981016 age=30000 enqueue=0
      flush-0:15-2214  [005]   347.898736: writeback_queue_io: bdi 0:15: older=4294986016 age=30000 enqueue=0
      flush-0:15-2214  [005]   352.883285: writeback_queue_io: bdi 0:15: older=4294991016 age=30000 enqueue=0
      flush-0:15-2214  [005]   357.867829: writeback_queue_io: bdi 0:15: older=4294996016 age=30000 enqueue=2
      flush-0:15-2214  [005]   362.852371: writeback_queue_io: bdi 0:15: older=4295001016 age=30000 enqueue=1
      flush-0:15-2214  [005]   367.836939: writeback_queue_io: bdi 0:15: older=4295006016 age=30000 enqueue=0
      flush-0:15-2214  [005]   372.821491: writeback_queue_io: bdi 0:15: older=4295011016 age=30000 enqueue=0
      flush-0:15-2214  [005]   377.806047: writeback_queue_io: bdi 0:15: older=4295016016 age=30000 enqueue=0
      flush-0:15-2214  [005]   382.790584: writeback_queue_io: bdi 0:15: older=4295021016 age=30000 enqueue=0
      flush-0:15-2214  [005]   387.775142: writeback_queue_io: bdi 0:15: older=4295026016 age=30000 enqueue=2
      flush-0:15-2214  [005]   392.759681: writeback_queue_io: bdi 0:15: older=4295031016 age=30000 enqueue=1
      flush-0:15-2214  [005]   397.744251: writeback_queue_io: bdi 0:15: older=4295036016 age=30000 enqueue=0
      flush-0:15-2214  [005]   402.728786: writeback_queue_io: bdi 0:15: older=4295041016 age=30000 enqueue=0
      flush-0:15-2214  [005]   407.713347: writeback_queue_io: bdi 0:15: older=4295046016 age=30000 enqueue=0
      flush-0:15-2214  [005]   412.697887: writeback_queue_io: bdi 0:15: older=4295051016 age=30000 enqueue=0
      flush-0:15-2214  [005]   417.682447: writeback_queue_io: bdi 0:15: older=4295056016 age=30000 enqueue=2
      flush-0:15-2214  [005]   422.666987: writeback_queue_io: bdi 0:15: older=4295061016 age=30000 enqueue=1
      flush-0:15-2214  [005]   427.651550: writeback_queue_io: bdi 0:15: older=4295066016 age=30000 enqueue=0
      flush-0:15-2214  [005]   432.636088: writeback_queue_io: bdi 0:15: older=4295071016 age=30000 enqueue=0
      flush-0:15-2214  [005]   437.620649: writeback_queue_io: bdi 0:15: older=4295076016 age=30000 enqueue=0
      flush-0:15-2214  [005]   442.605199: writeback_queue_io: bdi 0:15: older=4295081016 age=30000 enqueue=0
      flush-0:15-2214  [005]   447.589750: writeback_queue_io: bdi 0:15: older=4295086016 age=30000 enqueue=2
      flush-0:15-2214  [005]   452.574296: writeback_queue_io: bdi 0:15: older=4295091016 age=30000 enqueue=1
      flush-0:15-2214  [005]   457.558861: writeback_queue_io: bdi 0:15: older=4295096016 age=30000 enqueue=0
      flush-0:15-2214  [005]   462.543399: writeback_queue_io: bdi 0:15: older=4295101016 age=30000 enqueue=0
      flush-0:15-2214  [005]   467.527961: writeback_queue_io: bdi 0:15: older=4295106016 age=30000 enqueue=0
      flush-0:15-2214  [005]   472.512492: writeback_queue_io: bdi 0:15: older=4295111016 age=30000 enqueue=0
      flush-0:15-2214  [005]   477.497055: writeback_queue_io: bdi 0:15: older=4295116016 age=30000 enqueue=2
      flush-0:15-2214  [005]   482.481630: writeback_queue_io: bdi 0:15: older=4295121016 age=30000 enqueue=1
      flush-0:15-2214  [005]   487.466162: writeback_queue_io: bdi 0:15: older=4295126016 age=30000 enqueue=0
      flush-0:15-2214  [005]   492.450709: writeback_queue_io: bdi 0:15: older=4295131016 age=30000 enqueue=0
      flush-0:15-2214  [005]   497.435268: writeback_queue_io: bdi 0:15: older=4295136016 age=30000 enqueue=0
      flush-0:15-2214  [005]   502.419812: writeback_queue_io: bdi 0:15: older=4295141016 age=30000 enqueue=0
      flush-0:15-2214  [005]   507.404385: writeback_queue_io: bdi 0:15: older=4295146016 age=30000 enqueue=2
      flush-0:15-2214  [005]   512.388906: writeback_queue_io: bdi 0:15: older=4295151016 age=30000 enqueue=1
      flush-0:15-2214  [005]   517.373458: writeback_queue_io: bdi 0:15: older=4295156016 age=30000 enqueue=0
      flush-0:15-2214  [005]   522.358005: writeback_queue_io: bdi 0:15: older=4295161016 age=30000 enqueue=0
      flush-0:15-2214  [005]   527.342587: writeback_queue_io: bdi 0:15: older=4295166016 age=30000 enqueue=0
      flush-0:15-2214  [005]   532.327116: writeback_queue_io: bdi 0:15: older=4295171016 age=30000 enqueue=0

Thanks,
Fengguang

[RFC][PATCH] writeback: limit number of moved inodes in queue_io()

[Wu Fengguang]

> patched trace-tar-dd-ext4-2.6.39-rc3+

>        flush-8:0-3048  [004]  1929.981734: writeback_queue_io: bdi 8:0: older=4296600898 age=2 enqueue=13227

> vanilla trace-tar-dd-ext4-2.6.39-rc3

>        flush-8:0-2911  [004]    77.158312: writeback_queue_io: bdi 8:0: older=0 age=-1 enqueue=18938

>        flush-8:0-2911  [000]    82.461064: writeback_queue_io: bdi 8:0: older=0 age=-1 enqueue=6957

It looks too much to move 13227 and 18938 inodes at once. So I tried
arbitrarily limiting the max move number to 1000 and it helps reduce
the lock hold time and contentions a lot.

---
Subject: writeback: limit number of moved inodes in queue_io()
Date: Fri May 06 13:34:08 CST 2011

Only move 1000 inodes from b_dirty to b_io at one time. This reduces
lock hold time and lock contentions by many times in a simple dd+tar
workload in a 8p test box. This workload was observed to move 10000+
inodes in one shot on ext4 which was obviously too much.

                              class name    con-bounces    contentions   waittime-min   waittime-max waittime-total    acq-b
ounces   acquisitions   holdtime-min   holdtime-max holdtime-total
----------------------------------------------------------------------------------------------------------------------------
-------------------------------------------------------------------
                      inode_wb_list_lock:          2063           2065           0.12        2648.66        5948.99
 27475         943778           0.09        2704.76      498340.24
                      ------------------
                      inode_wb_list_lock             89          [<ffffffff8115cf3a>] sync_inode+0x28/0x5f
                      inode_wb_list_lock             38          [<ffffffff8115ccab>] inode_wait_for_writeback+0xa8/0xc6
                      inode_wb_list_lock            629          [<ffffffff8115da35>] __mark_inode_dirty+0x170/0x1d0
                      inode_wb_list_lock            842          [<ffffffff8115d334>] writeback_sb_inodes+0x10f/0x157
                      ------------------
                      inode_wb_list_lock            891          [<ffffffff8115ce3e>] writeback_single_inode+0x175/0x249
                      inode_wb_list_lock             13          [<ffffffff8115dc4e>] writeback_inodes_wb+0x3a/0x143
                      inode_wb_list_lock            499          [<ffffffff8115da35>] __mark_inode_dirty+0x170/0x1d0
                      inode_wb_list_lock            617          [<ffffffff8115d334>] writeback_sb_inodes+0x10f/0x157


                &(&wb->list_lock)->rlock:           842            842           0.14         101.10        1013.34
 20489         970892           0.09         234.11      509829.79
                ------------------------
                &(&wb->list_lock)->rlock            275          [<ffffffff8115db09>] __mark_inode_dirty+0x173/0x1cf
                &(&wb->list_lock)->rlock            114          [<ffffffff8115cdd3>] writeback_single_inode+0x18a/0x27e
                &(&wb->list_lock)->rlock             56          [<ffffffff8115cc29>] inode_wait_for_writeback+0xac/0xcc
                &(&wb->list_lock)->rlock            132          [<ffffffff8115cf2a>] sync_inode+0x63/0xa2
                ------------------------
                &(&wb->list_lock)->rlock              2          [<ffffffff8115dfea>] inode_wb_list_del+0x5f/0x85
                &(&wb->list_lock)->rlock             33          [<ffffffff8115cf2a>] sync_inode+0x63/0xa2
                &(&wb->list_lock)->rlock              9          [<ffffffff8115cc29>] inode_wait_for_writeback+0xac/0xcc
                &(&wb->list_lock)->rlock            430          [<ffffffff8115cdd3>] writeback_single_inode+0x18a/0x27e

Signed-off-by: Wu Fengguang <fengguang.wu@intel.com>
---
 fs/fs-writeback.c |    2 ++
 1 file changed, 2 insertions(+)

--- linux-next.orig/fs/fs-writeback.c	2011-05-06 13:32:41.000000000 +0800
+++ linux-next/fs/fs-writeback.c	2011-05-06 13:34:08.000000000 +0800
@@ -279,6 +279,8 @@ static int move_expired_inodes(struct li
 		sb = inode->i_sb;
 		list_move(&inode->i_wb_list, &tmp);
 		moved++;
+		if (unlikely(moved >= 1000))	/* limit spinlock hold time */
+			break;
 	}
 
 	/* just one sb in list, splice to dispatch_queue and we're done */

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[RFC][PATCH v2] writeback: limit number of moved inodes in queue_io()

[Wu Fengguang]

On Fri, May 06, 2011 at 04:42:38PM +0800, Wu Fengguang wrote:
> > patched trace-tar-dd-ext4-2.6.39-rc3+
> 
> >        flush-8:0-3048  [004]  1929.981734: writeback_queue_io: bdi 8:0: older=4296600898 age=2 enqueue=13227
> 
> > vanilla trace-tar-dd-ext4-2.6.39-rc3
> 
> >        flush-8:0-2911  [004]    77.158312: writeback_queue_io: bdi 8:0: older=0 age=-1 enqueue=18938
> 
> >        flush-8:0-2911  [000]    82.461064: writeback_queue_io: bdi 8:0: older=0 age=-1 enqueue=6957
> 
> It looks too much to move 13227 and 18938 inodes at once. So I tried
> arbitrarily limiting the max move number to 1000 and it helps reduce
> the lock hold time and contentions a lot.

Oh it seems 1000 is too small at least for this workload, it hurts
dd+tar+sync total elapsed time. 

no limit:
                avg        167.486 
                stddev       8.996 
limit=1000:
                avg        171.222 
                stddev       5.588 
limit=3000:
                avg        165.335 
                stddev       5.503 

So use 3000 as the new limit.

Thanks,
Fengguang
---
Subject: writeback: limit number of moved inodes in queue_io()
Date: Fri May 06 13:34:08 CST 2011

Only move 3000 inodes from b_dirty to b_io at one time. This reduces
lock max hold time and lock contentions by many times in a simple dd+tar
workload in a 8p test box. This workload was observed to move 10000+
inodes in one shot on ext4 which was obviously too much.

                              class name    con-bounces    contentions   waittime-min   waittime-max waittime-total    acq-b
ounces   acquisitions   holdtime-min   holdtime-max holdtime-total
----------------------------------------------------------------------------------------------------------------------------
-------------------------------------------------------------------
vanilla 2.6.39-rc3:
                      inode_wb_list_lock:          2063           2065           0.12        2648.66        5948.99
 27475         943778           0.09        2704.76      498340.24
                      ------------------
                      inode_wb_list_lock             89          [<ffffffff8115cf3a>] sync_inode+0x28/0x5f
                      inode_wb_list_lock             38          [<ffffffff8115ccab>] inode_wait_for_writeback+0xa8/0xc6
                      inode_wb_list_lock            629          [<ffffffff8115da35>] __mark_inode_dirty+0x170/0x1d0
                      inode_wb_list_lock            842          [<ffffffff8115d334>] writeback_sb_inodes+0x10f/0x157
                      ------------------
                      inode_wb_list_lock            891          [<ffffffff8115ce3e>] writeback_single_inode+0x175/0x249
                      inode_wb_list_lock             13          [<ffffffff8115dc4e>] writeback_inodes_wb+0x3a/0x143
                      inode_wb_list_lock            499          [<ffffffff8115da35>] __mark_inode_dirty+0x170/0x1d0
                      inode_wb_list_lock            617          [<ffffffff8115d334>] writeback_sb_inodes+0x10f/0x157

limit=1000:

dd+tar+sync total elapsed time (10 runs):
				avg        171.222 
				stddev       5.588 

                &(&wb->list_lock)->rlock:           842            842           0.14         101.10        1013.34
 20489         970892           0.09         234.11      509829.79
                ------------------------
                &(&wb->list_lock)->rlock            275          [<ffffffff8115db09>] __mark_inode_dirty+0x173/0x1cf
                &(&wb->list_lock)->rlock            114          [<ffffffff8115cdd3>] writeback_single_inode+0x18a/0x27e
                &(&wb->list_lock)->rlock             56          [<ffffffff8115cc29>] inode_wait_for_writeback+0xac/0xcc
                &(&wb->list_lock)->rlock            132          [<ffffffff8115cf2a>] sync_inode+0x63/0xa2
                ------------------------
                &(&wb->list_lock)->rlock              2          [<ffffffff8115dfea>] inode_wb_list_del+0x5f/0x85
                &(&wb->list_lock)->rlock             33          [<ffffffff8115cf2a>] sync_inode+0x63/0xa2
                &(&wb->list_lock)->rlock              9          [<ffffffff8115cc29>] inode_wait_for_writeback+0xac/0xcc
                &(&wb->list_lock)->rlock            430          [<ffffffff8115cdd3>] writeback_single_inode+0x18a/0x27e

limit=3000:

dd+tar+sync total elapsed time (10 runs):
				avg        165.335
				stddev       5.503

                &(&wb->list_lock)->rlock:          1088           1092           0.11         245.08        3268.75
 21124        1718636           0.09         384.53      849827.20
                ------------------------
                &(&wb->list_lock)->rlock            518          [<ffffffff8115db09>] __mark_inode_dirty+0x173/0x1cf
                &(&wb->list_lock)->rlock              3          [<ffffffff8115dfea>] inode_wb_list_del+0x5f/0x85
                &(&wb->list_lock)->rlock             54          [<ffffffff8115cf2a>] sync_inode+0x63/0xa2
                &(&wb->list_lock)->rlock             10          [<ffffffff8115cc29>] inode_wait_for_writeback+0xac/0xcc
                ------------------------
                &(&wb->list_lock)->rlock              4          [<ffffffff8115dfea>] inode_wb_list_del+0x5f/0x85
                &(&wb->list_lock)->rlock            379          [<ffffffff8115db09>] __mark_inode_dirty+0x173/0x1cf
                &(&wb->list_lock)->rlock              4          [<ffffffff8115cc29>] inode_wait_for_writeback+0xac/0xcc
                &(&wb->list_lock)->rlock            446          [<ffffffff8115cdd3>] writeback_single_inode+0x18a/0x27e

Signed-off-by: Wu Fengguang <fengguang.wu@intel.com>
---
 fs/fs-writeback.c |    2 ++
 1 file changed, 2 insertions(+)

--- linux-next.orig/fs/fs-writeback.c	2011-05-06 13:32:41.000000000 +0800
+++ linux-next/fs/fs-writeback.c	2011-05-06 16:44:58.000000000 +0800
@@ -279,6 +279,8 @@ static int move_expired_inodes(struct li
 		sb = inode->i_sb;
 		list_move(&inode->i_wb_list, &tmp);
 		moved++;
+		if (unlikely(moved >= 3000))	/* limit spinlock hold time */
+			break;
 	}
 
 	/* just one sb in list, splice to dispatch_queue and we're done */

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Re: [RFC][PATCH v2] writeback: limit number of moved inodes in queue_io()

[Dave Chinner]

On Fri, May 06, 2011 at 06:06:48PM +0800, Wu Fengguang wrote:
> On Fri, May 06, 2011 at 04:42:38PM +0800, Wu Fengguang wrote:
> > > patched trace-tar-dd-ext4-2.6.39-rc3+
> > 
> > >        flush-8:0-3048  [004]  1929.981734: writeback_queue_io: bdi 8:0: older=4296600898 age=2 enqueue=13227
> > 
> > > vanilla trace-tar-dd-ext4-2.6.39-rc3
> > 
> > >        flush-8:0-2911  [004]    77.158312: writeback_queue_io: bdi 8:0: older=0 age=-1 enqueue=18938
> > 
> > >        flush-8:0-2911  [000]    82.461064: writeback_queue_io: bdi 8:0: older=0 age=-1 enqueue=6957
> > 
> > It looks too much to move 13227 and 18938 inodes at once. So I tried
> > arbitrarily limiting the max move number to 1000 and it helps reduce
> > the lock hold time and contentions a lot.
> 
> Oh it seems 1000 is too small at least for this workload, it hurts
> dd+tar+sync total elapsed time. 
> 
> no limit:
>                 avg        167.486 
>                 stddev       8.996 
> limit=1000:
>                 avg        171.222 
>                 stddev       5.588 
> limit=3000:
>                 avg        165.335 
>                 stddev       5.503 
> 
> So use 3000 as the new limit.

I don't think that's even enough. The number is going to be workload
dependent and while a limit might be a good idea, I don't think it
can be chosen just from one simple benchmark. e.g. what does it to
do performance of workloads creating tens of thousands of small
dirty files a second?

....

>                               class name    con-bounces    contentions   waittime-min   waittime-max waittime-total    acq-b
> ounces   acquisitions   holdtime-min   holdtime-max holdtime-total
> ----------------------------------------------------------------------------------------------------------------------------
> -------------------------------------------------------------------
> vanilla 2.6.39-rc3:
>                       inode_wb_list_lock:          2063           2065           0.12        2648.66        5948.99
>  27475         943778           0.09        2704.76      498340.24

I wouldn't consider this a contended lock at all on this workload.

FWIW, my profiles on sustained 8-way small file creation workloads
on ext4 over tens of millions of inodes show a 0.1% contention rate
for the inode_wb_list_lock. That compares to a 2% contention rate
for the inode_lru_lock, a 4% contention rate on the
inode_sb_list_lock and a 6% contention rate on the inode_hash_lock.
So really, the inode_wb_list_lock is not the lock we need to spend
effort on optimising to the nth degree right now...

......
> limit=1000:
> 
> dd+tar+sync total elapsed time (10 runs):
> 				avg        171.222 
> 				stddev       5.588 
> 
>                 &(&wb->list_lock)->rlock:           842            842           0.14         101.10        1013.34
>  20489         970892           0.09         234.11      509829.79
.....
> limit=3000:
> 
> dd+tar+sync total elapsed time (10 runs):
> 				avg        165.335
> 				stddev       5.503
> 
>                 &(&wb->list_lock)->rlock:          1088           1092           0.11         245.08        3268.75
>  21124        1718636           0.09         384.53      849827.20

So, from this acquisitions are doubled, and the total lock hold time
has almost doubled as well. That seems like there's a fair bit of
inefficiency introduced. What does it do to the CPU time consumed by
queue_io() (perf top is your friend)?

FYI, queue_io() is already a _massive_ CPU hog.  See commit dcd79a1
("xfs: don't use vfs writeback for pure metadata modifications") for
how XFS tries to avoid putting dirty inodes on the list if at all
possible:

    Under heavy multi-way parallel create workloads, the VFS
    struggles to write back all the inodes that have been changed in
    age order.  The bdi flusher thread becomes CPU bound, spending
    85% of it's time in the VFS code, mostly traversing the
    superblock dirty inode list to separate dirty inodes old enough
    to flush.

    We already keep an index of all metadata changes in age order -
    in the AIL - and continued log pressure will do age ordered
    writeback without any extra overhead at all. If there is no
    pressure on the log, the xfssyncd will periodically write back
    metadata in ascending disk address offset order so will be very
    efficient.
    .....

We're moving towards only tracking inodes with dirty pages in the
b_dirty list for XFS because this time based expiry is so
inefficient. So anything that reduces the efficiency of
queue_io()....

Cheers,

Dave.


-- 
Dave Chinner
david@fromorbit.com

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Re: [PATCH 6/6] writeback: refill b_io iff empty

[Jan Kara]

On Fri 06-05-11 13:29:55, Wu Fengguang wrote:
> On Fri, May 06, 2011 at 12:37:08AM +0800, Jan Kara wrote:
> > On Wed 04-05-11 15:39:31, Wu Fengguang wrote:
> > > To help understand the behavior change, I wrote the writeback_queue_io
> > > trace event, and found very different patterns between
> > > - vanilla kernel
> > > - this patchset plus the sync livelock fixes
> > > 
> > > Basically the vanilla kernel each time pulls a random number of inodes
> > > from b_dirty, while the patched kernel tends to pull a fixed number of
> > > inodes (enqueue=1031) from b_dirty. The new behavior is very interesting...
> >   This regularity is really strange. Did you have a chance to look more into
> > it? I find it highly unlikely that there would be exactly 1031 dirty inodes
> > in b_dirty list every time you call move_expired_inodes()...
> 
> Jan, I got some results for ext4. The total dd+tar+sync time is
> decreased from 177s to 167s. The other numbers are either raised or
> dropped.
  Nice, but what I was more curious about was to understand why you saw
enqueued=1031 all the time. BTW, I'd suppose that the better performance
numbers come from sync using page tagging, right? Because from the traces
it seems that not much IO is going on until sync is called. And I expect
that tagging can bring you some performance because now you sync a file in
one big sweep instead of 4MB chunks...

> 1902.672610: writeback_queue_io: older=4296543506 age=30000 enqueue=0
> 1905.209570: writeback_queue_io: older=4296546051 age=30000 enqueue=0
> 1907.294936: writeback_queue_io: older=4296548143 age=30000 enqueue=0
> 1909.607301: writeback_queue_io: older=4296550462 age=30000 enqueue=0
> 1912.290627: writeback_queue_io: older=4296553154 age=30000 enqueue=0
> 1914.331197: writeback_queue_io: older=4296555201 age=30000 enqueue=0
> 1927.275838: writeback_queue_io: older=4296568186 age=30000 enqueue=0
> 1927.277794: writeback_queue_io: older=4296568188 age=30000 enqueue=0
> 1927.279504: writeback_queue_io: older=4296568189 age=30000 enqueue=0
> 1927.279923: writeback_queue_io: older=4296568190 age=30000 enqueue=0
> 1929.981734: writeback_queue_io: older=4296600898 age=2 enqueue=13227
> 1932.840150: writeback_queue_io: older=4296600898 age=2869 enqueue=0
> 1932.840781: writeback_queue_io: older=4296603768 age=0 enqueue=0
> 1932.840787: writeback_queue_io: older=4296573768 age=30000 enqueue=0
> 1932.991596: writeback_queue_io: older=4296603919 age=0 enqueue=1
> 1937.975765: writeback_queue_io: older=4296578919 age=30000 enqueue=0
> 1942.960305: writeback_queue_io: older=4296583919 age=30000 enqueue=0
> 1947.944925: writeback_queue_io: older=4296588919 age=30000 enqueue=0
> 1952.929427: writeback_queue_io: older=4296593919 age=30000 enqueue=0
> 1957.914031: writeback_queue_io: older=4296598919 age=30000 enqueue=0
> 1962.898507: writeback_queue_io: older=4296603919 age=30000 enqueue=1
> 1962.898518: writeback_queue_io: older=4296603919 age=30000 enqueue=0
  OK, so now enqueue numbers look like what I'd expect. I'm relieved :)
Thanks for running the tests.

								Honza
-- 
Jan Kara <jack@suse.cz>
SUSE Labs, CR

Re: [PATCH 6/6] writeback: refill b_io iff empty

[Wu Fengguang]

[-- Attachment #1: Type: text/plain, Size: 3503 bytes --]

On Fri, May 06, 2011 at 10:21:55PM +0800, Jan Kara wrote:
> On Fri 06-05-11 13:29:55, Wu Fengguang wrote:
> > On Fri, May 06, 2011 at 12:37:08AM +0800, Jan Kara wrote:
> > > On Wed 04-05-11 15:39:31, Wu Fengguang wrote:
> > > > To help understand the behavior change, I wrote the writeback_queue_io
> > > > trace event, and found very different patterns between
> > > > - vanilla kernel
> > > > - this patchset plus the sync livelock fixes
> > > > 
> > > > Basically the vanilla kernel each time pulls a random number of inodes
> > > > from b_dirty, while the patched kernel tends to pull a fixed number of
> > > > inodes (enqueue=1031) from b_dirty. The new behavior is very interesting...
> > >   This regularity is really strange. Did you have a chance to look more into
> > > it? I find it highly unlikely that there would be exactly 1031 dirty inodes
> > > in b_dirty list every time you call move_expired_inodes()...
> > 
> > Jan, I got some results for ext4. The total dd+tar+sync time is
> > decreased from 177s to 167s. The other numbers are either raised or
> > dropped.
>   Nice, but what I was more curious about was to understand why you saw
> enqueued=1031 all the time.

Maybe some unknown interactions with XFS? Attached is another trace
with both writeback_single_inode and writeback_queue_io.

> BTW, I'd suppose that the better performance
> numbers come from sync using page tagging, right?

No. Many of the tests predate the sync livelock patches.

> Because from the traces
> it seems that not much IO is going on until sync is called. And I expect
> that tagging can bring you some performance because now you sync a file in
> one big sweep instead of 4MB chunks...
 
But ext4 already does 128MB write chunk size..

> > 1902.672610: writeback_queue_io: older=4296543506 age=30000 enqueue=0
> > 1905.209570: writeback_queue_io: older=4296546051 age=30000 enqueue=0
> > 1907.294936: writeback_queue_io: older=4296548143 age=30000 enqueue=0
> > 1909.607301: writeback_queue_io: older=4296550462 age=30000 enqueue=0
> > 1912.290627: writeback_queue_io: older=4296553154 age=30000 enqueue=0
> > 1914.331197: writeback_queue_io: older=4296555201 age=30000 enqueue=0
> > 1927.275838: writeback_queue_io: older=4296568186 age=30000 enqueue=0
> > 1927.277794: writeback_queue_io: older=4296568188 age=30000 enqueue=0
> > 1927.279504: writeback_queue_io: older=4296568189 age=30000 enqueue=0
> > 1927.279923: writeback_queue_io: older=4296568190 age=30000 enqueue=0
> > 1929.981734: writeback_queue_io: older=4296600898 age=2 enqueue=13227
> > 1932.840150: writeback_queue_io: older=4296600898 age=2869 enqueue=0
> > 1932.840781: writeback_queue_io: older=4296603768 age=0 enqueue=0
> > 1932.840787: writeback_queue_io: older=4296573768 age=30000 enqueue=0
> > 1932.991596: writeback_queue_io: older=4296603919 age=0 enqueue=1
> > 1937.975765: writeback_queue_io: older=4296578919 age=30000 enqueue=0
> > 1942.960305: writeback_queue_io: older=4296583919 age=30000 enqueue=0
> > 1947.944925: writeback_queue_io: older=4296588919 age=30000 enqueue=0
> > 1952.929427: writeback_queue_io: older=4296593919 age=30000 enqueue=0
> > 1957.914031: writeback_queue_io: older=4296598919 age=30000 enqueue=0
> > 1962.898507: writeback_queue_io: older=4296603919 age=30000 enqueue=1
> > 1962.898518: writeback_queue_io: older=4296603919 age=30000 enqueue=0
>   OK, so now enqueue numbers look like what I'd expect. I'm relieved :)
> Thanks for running the tests.

You are welcome :)

Thanks,
Fengguang

[-- Attachment #2: trace-tar-dd-xfs-2.6.39-rc3+-head --]
[-- Type: text/plain, Size: 546200 bytes --]

# tracer: nop
#
#           TASK-PID    CPU#    TIMESTAMP  FUNCTION
#              | |       |          |         |
      flush-0:15-2217  [007]  2466.173370: writeback_queue_io: bdi 0:15: older=4297110856 age=30000 enqueue=1
      flush-0:15-2217  [007]  2466.173379: writeback_single_inode: bdi 0:15: ino=1534002 state=I_DIRTY_DATASYNC|I_REFERENCED age=0 index=0 to_write=1024 wrote=0
       flush-8:0-2977  [007]  2466.694716: writeback_queue_io: bdi 8:0: older=4297111379 age=30000 enqueue=0
       flush-8:0-2977  [007]  2466.694720: writeback_queue_io: bdi 8:0: older=4297111379 age=30000 enqueue=0
       flush-8:0-2977  [007]  2466.694796: writeback_queue_io: bdi 8:0: older=0 age=-1 enqueue=676
       flush-8:0-2977  [007]  2466.695747: writeback_single_inode: bdi 8:0: ino=131 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=322 index=0 to_write=1024 wrote=1025
       flush-8:0-2977  [007]  2466.695786: writeback_single_inode: bdi 8:0: ino=133 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=272 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.695817: writeback_single_inode: bdi 8:0: ino=134 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=272 index=1 to_write=1024 wrote=2
       flush-8:0-2977  [007]  2466.695844: writeback_single_inode: bdi 8:0: ino=135 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=272 index=4 to_write=1024 wrote=5
       flush-8:0-2977  [007]  2466.695883: writeback_single_inode: bdi 8:0: ino=136 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=271 index=13 to_write=1024 wrote=23
       flush-8:0-2977  [007]  2466.695913: writeback_single_inode: bdi 8:0: ino=134217857 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=254 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.695942: writeback_single_inode: bdi 8:0: ino=134217858 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=254 index=3 to_write=1024 wrote=4
       flush-8:0-2977  [007]  2466.695970: writeback_single_inode: bdi 8:0: ino=268628417 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=244 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.696000: writeback_single_inode: bdi 8:0: ino=402653313 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=231 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.696024: writeback_single_inode: bdi 8:0: ino=402653314 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=230 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.696048: writeback_single_inode: bdi 8:0: ino=402653315 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=230 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.696070: writeback_single_inode: bdi 8:0: ino=402653316 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=230 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.696097: writeback_single_inode: bdi 8:0: ino=138 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=230 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.696120: writeback_single_inode: bdi 8:0: ino=139 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=230 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.696144: writeback_single_inode: bdi 8:0: ino=140 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=230 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.696166: writeback_single_inode: bdi 8:0: ino=141 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=230 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.696193: writeback_single_inode: bdi 8:0: ino=134217860 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=230 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.696216: writeback_single_inode: bdi 8:0: ino=134217861 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=230 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.696239: writeback_single_inode: bdi 8:0: ino=134217862 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=230 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.696261: writeback_single_inode: bdi 8:0: ino=134217863 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=230 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.696287: writeback_single_inode: bdi 8:0: ino=134217864 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=229 index=1 to_write=1024 wrote=2
       flush-8:0-2977  [007]  2466.696309: writeback_single_inode: bdi 8:0: ino=134217865 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=229 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.696333: writeback_single_inode: bdi 8:0: ino=134217866 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=229 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.696355: writeback_single_inode: bdi 8:0: ino=134217867 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=229 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.696379: writeback_single_inode: bdi 8:0: ino=134217868 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=229 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.696402: writeback_single_inode: bdi 8:0: ino=134217869 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=229 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.696426: writeback_single_inode: bdi 8:0: ino=268628419 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=229 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.696449: writeback_single_inode: bdi 8:0: ino=268628420 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=229 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.696473: writeback_single_inode: bdi 8:0: ino=268628421 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=229 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.696496: writeback_single_inode: bdi 8:0: ino=268628422 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=229 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.696520: writeback_single_inode: bdi 8:0: ino=268628423 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=229 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.696544: writeback_single_inode: bdi 8:0: ino=268628424 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=229 index=1 to_write=1024 wrote=2
       flush-8:0-2977  [007]  2466.696569: writeback_single_inode: bdi 8:0: ino=268628425 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=229 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.696601: writeback_single_inode: bdi 8:0: ino=268628426 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=229 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.696626: writeback_single_inode: bdi 8:0: ino=268628427 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=229 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.696649: writeback_single_inode: bdi 8:0: ino=268628428 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=229 index=1 to_write=1024 wrote=2
       flush-8:0-2977  [007]  2466.696674: writeback_single_inode: bdi 8:0: ino=268628429 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=229 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.696696: writeback_single_inode: bdi 8:0: ino=268628430 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=229 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.696720: writeback_single_inode: bdi 8:0: ino=268628431 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=229 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.696743: writeback_single_inode: bdi 8:0: ino=268628432 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=229 index=1 to_write=1024 wrote=2
       flush-8:0-2977  [007]  2466.696769: writeback_single_inode: bdi 8:0: ino=268628433 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=229 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.696790: writeback_single_inode: bdi 8:0: ino=268628434 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=229 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.696814: writeback_single_inode: bdi 8:0: ino=268628435 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=229 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.696835: writeback_single_inode: bdi 8:0: ino=268628436 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=229 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.696859: writeback_single_inode: bdi 8:0: ino=268628437 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=229 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.696881: writeback_single_inode: bdi 8:0: ino=268628438 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=229 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.696905: writeback_single_inode: bdi 8:0: ino=268628439 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=228 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.696927: writeback_single_inode: bdi 8:0: ino=268628440 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=228 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.696951: writeback_single_inode: bdi 8:0: ino=268628441 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=228 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.696973: writeback_single_inode: bdi 8:0: ino=268628442 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=228 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.696998: writeback_single_inode: bdi 8:0: ino=268628443 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=228 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.697022: writeback_single_inode: bdi 8:0: ino=268628444 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=228 index=2 to_write=1024 wrote=3
       flush-8:0-2977  [007]  2466.697049: writeback_single_inode: bdi 8:0: ino=268628445 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=228 index=1 to_write=1024 wrote=2
       flush-8:0-2977  [007]  2466.697072: writeback_single_inode: bdi 8:0: ino=268628446 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=228 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.697096: writeback_single_inode: bdi 8:0: ino=268628447 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=228 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.697118: writeback_single_inode: bdi 8:0: ino=268628448 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=228 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.697143: writeback_single_inode: bdi 8:0: ino=268628449 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=228 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.697165: writeback_single_inode: bdi 8:0: ino=268628450 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=228 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.697189: writeback_single_inode: bdi 8:0: ino=268628451 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=228 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.697213: writeback_single_inode: bdi 8:0: ino=268628452 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=227 index=1 to_write=1024 wrote=2
       flush-8:0-2977  [007]  2466.697238: writeback_single_inode: bdi 8:0: ino=268628453 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=227 index=1 to_write=1024 wrote=2
       flush-8:0-2977  [007]  2466.697261: writeback_single_inode: bdi 8:0: ino=268628454 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=227 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.697285: writeback_single_inode: bdi 8:0: ino=268628455 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=227 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.697307: writeback_single_inode: bdi 8:0: ino=268628456 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=227 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.697334: writeback_single_inode: bdi 8:0: ino=268628457 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=227 index=1 to_write=1024 wrote=2
       flush-8:0-2977  [007]  2466.697359: writeback_single_inode: bdi 8:0: ino=268628458 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=227 index=1 to_write=1024 wrote=2
       flush-8:0-2977  [007]  2466.697384: writeback_single_inode: bdi 8:0: ino=268628459 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=227 index=1 to_write=1024 wrote=2
       flush-8:0-2977  [007]  2466.697407: writeback_single_inode: bdi 8:0: ino=268628460 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=227 index=1 to_write=1024 wrote=2
       flush-8:0-2977  [007]  2466.697432: writeback_single_inode: bdi 8:0: ino=268628461 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=227 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.697454: writeback_single_inode: bdi 8:0: ino=268628462 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=227 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.697478: writeback_single_inode: bdi 8:0: ino=268628463 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=226 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.697500: writeback_single_inode: bdi 8:0: ino=268628464 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=226 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.697526: writeback_single_inode: bdi 8:0: ino=268628465 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=226 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.697548: writeback_single_inode: bdi 8:0: ino=268628466 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=226 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.697572: writeback_single_inode: bdi 8:0: ino=268628467 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=226 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.697598: writeback_single_inode: bdi 8:0: ino=268628468 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=227 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.697623: writeback_single_inode: bdi 8:0: ino=268628469 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=227 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.697649: writeback_single_inode: bdi 8:0: ino=268628470 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=227 index=4 to_write=1024 wrote=5
       flush-8:0-2977  [007]  2466.697673: writeback_single_inode: bdi 8:0: ino=268628471 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=227 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.697695: writeback_single_inode: bdi 8:0: ino=268628472 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=227 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.697719: writeback_single_inode: bdi 8:0: ino=268628473 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=227 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.697742: writeback_single_inode: bdi 8:0: ino=268628474 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=227 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.697766: writeback_single_inode: bdi 8:0: ino=268628475 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=227 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.697789: writeback_single_inode: bdi 8:0: ino=268628476 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=226 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.697813: writeback_single_inode: bdi 8:0: ino=268628477 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=226 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.697836: writeback_single_inode: bdi 8:0: ino=268628478 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=226 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.697859: writeback_single_inode: bdi 8:0: ino=268628479 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=226 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.697883: writeback_single_inode: bdi 8:0: ino=268628480 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=226 index=1 to_write=1024 wrote=2
       flush-8:0-2977  [007]  2466.697909: writeback_single_inode: bdi 8:0: ino=268628481 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=226 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.697931: writeback_single_inode: bdi 8:0: ino=268628482 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=226 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.697955: writeback_single_inode: bdi 8:0: ino=268628483 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=226 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.697977: writeback_single_inode: bdi 8:0: ino=268628484 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=225 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.698003: writeback_single_inode: bdi 8:0: ino=268628485 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=225 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.698028: writeback_single_inode: bdi 8:0: ino=134217870 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=225 index=2 to_write=1024 wrote=3
       flush-8:0-2977  [007]  2466.698055: writeback_single_inode: bdi 8:0: ino=134217871 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=225 index=3 to_write=1024 wrote=4
       flush-8:0-2977  [007]  2466.698083: writeback_single_inode: bdi 8:0: ino=134217872 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=225 index=7 to_write=1024 wrote=8
       flush-8:0-2977  [007]  2466.698111: writeback_single_inode: bdi 8:0: ino=134217873 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=225 index=6 to_write=1024 wrote=7
       flush-8:0-2977  [007]  2466.698138: writeback_single_inode: bdi 8:0: ino=134217874 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=225 index=6 to_write=1024 wrote=7
       flush-8:0-2977  [007]  2466.698163: writeback_single_inode: bdi 8:0: ino=134217875 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=224 index=1 to_write=1024 wrote=2
       flush-8:0-2977  [007]  2466.698186: writeback_single_inode: bdi 8:0: ino=134217876 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=224 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.698214: writeback_single_inode: bdi 8:0: ino=402653318 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=224 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.698241: writeback_single_inode: bdi 8:0: ino=402653319 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=224 index=5 to_write=1024 wrote=6
       flush-8:0-2977  [007]  2466.698267: writeback_single_inode: bdi 8:0: ino=402653320 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=224 index=1 to_write=1024 wrote=2
       flush-8:0-2977  [007]  2466.698289: writeback_single_inode: bdi 8:0: ino=402653321 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=223 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.698315: writeback_single_inode: bdi 8:0: ino=402653322 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=223 index=3 to_write=1024 wrote=4
       flush-8:0-2977  [007]  2466.698340: writeback_single_inode: bdi 8:0: ino=402653323 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=223 index=3 to_write=1024 wrote=4
       flush-8:0-2977  [007]  2466.698366: writeback_single_inode: bdi 8:0: ino=402653324 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=223 index=2 to_write=1024 wrote=3
       flush-8:0-2977  [007]  2466.698393: writeback_single_inode: bdi 8:0: ino=402653325 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=223 index=7 to_write=1024 wrote=8
       flush-8:0-2977  [007]  2466.698422: writeback_single_inode: bdi 8:0: ino=143 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=222 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.698451: writeback_single_inode: bdi 8:0: ino=144 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=222 index=9 to_write=1024 wrote=10
       flush-8:0-2977  [007]  2466.698477: writeback_single_inode: bdi 8:0: ino=145 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=221 index=1 to_write=1024 wrote=2
       flush-8:0-2977  [007]  2466.698504: writeback_single_inode: bdi 8:0: ino=146 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=221 index=6 to_write=1024 wrote=7
       flush-8:0-2977  [007]  2466.698535: writeback_single_inode: bdi 8:0: ino=147 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=221 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.698560: writeback_single_inode: bdi 8:0: ino=148 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=221 index=3 to_write=1024 wrote=4
       flush-8:0-2977  [007]  2466.698588: writeback_single_inode: bdi 8:0: ino=149 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=221 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.698615: writeback_single_inode: bdi 8:0: ino=150 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=221 index=5 to_write=1024 wrote=6
       flush-8:0-2977  [007]  2466.698642: writeback_single_inode: bdi 8:0: ino=151 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=210 index=2 to_write=1024 wrote=3
       flush-8:0-2977  [007]  2466.698666: writeback_single_inode: bdi 8:0: ino=152 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=210 index=3 to_write=1024 wrote=4
       flush-8:0-2977  [007]  2466.698698: writeback_single_inode: bdi 8:0: ino=153 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=210 index=12 to_write=1024 wrote=13
       flush-8:0-2977  [007]  2466.698722: writeback_single_inode: bdi 8:0: ino=154 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=209 index=1 to_write=1024 wrote=2
       flush-8:0-2977  [007]  2466.698757: writeback_single_inode: bdi 8:0: ino=155 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=209 index=13 to_write=1024 wrote=18
       flush-8:0-2977  [007]  2466.698780: writeback_single_inode: bdi 8:0: ino=156 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=208 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.698812: writeback_single_inode: bdi 8:0: ino=157 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=207 index=12 to_write=1024 wrote=13
       flush-8:0-2977  [007]  2466.698837: writeback_single_inode: bdi 8:0: ino=402653326 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=206 index=3 to_write=1024 wrote=4
       flush-8:0-2977  [007]  2466.698866: writeback_single_inode: bdi 8:0: ino=402653327 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=206 index=7 to_write=1024 wrote=8
       flush-8:0-2977  [007]  2466.698892: writeback_single_inode: bdi 8:0: ino=402653328 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=185 index=4 to_write=1024 wrote=5
       flush-8:0-2977  [007]  2466.698918: writeback_single_inode: bdi 8:0: ino=402653329 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=185 index=2 to_write=1024 wrote=3
       flush-8:0-2977  [007]  2466.698946: writeback_single_inode: bdi 8:0: ino=402653330 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=185 index=10 to_write=1024 wrote=11
       flush-8:0-2977  [007]  2466.698981: writeback_single_inode: bdi 8:0: ino=402653331 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=184 index=13 to_write=1024 wrote=17
       flush-8:0-2977  [007]  2466.699009: writeback_single_inode: bdi 8:0: ino=402653332 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=183 index=10 to_write=1024 wrote=11
       flush-8:0-2977  [007]  2466.699041: writeback_single_inode: bdi 8:0: ino=402653333 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=182 index=11 to_write=1024 wrote=12
       flush-8:0-2977  [007]  2466.699065: writeback_single_inode: bdi 8:0: ino=402653334 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=181 index=2 to_write=1024 wrote=3
       flush-8:0-2977  [007]  2466.699093: writeback_single_inode: bdi 8:0: ino=402653335 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=181 index=3 to_write=1024 wrote=4
       flush-8:0-2977  [007]  2466.699116: writeback_single_inode: bdi 8:0: ino=402653336 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=181 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.699145: writeback_single_inode: bdi 8:0: ino=402653337 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=181 index=7 to_write=1024 wrote=8
       flush-8:0-2977  [007]  2466.699169: writeback_single_inode: bdi 8:0: ino=402653338 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=181 index=2 to_write=1024 wrote=3
       flush-8:0-2977  [007]  2466.699196: writeback_single_inode: bdi 8:0: ino=402653339 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=180 index=1 to_write=1024 wrote=2
       flush-8:0-2977  [007]  2466.699229: writeback_single_inode: bdi 8:0: ino=402653340 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=180 index=11 to_write=1024 wrote=12
       flush-8:0-2977  [007]  2466.699254: writeback_single_inode: bdi 8:0: ino=402653341 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=180 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.699278: writeback_single_inode: bdi 8:0: ino=402653342 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=179 index=1 to_write=1024 wrote=2
       flush-8:0-2977  [007]  2466.699304: writeback_single_inode: bdi 8:0: ino=402653343 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=179 index=2 to_write=1024 wrote=3
       flush-8:0-2977  [007]  2466.699327: writeback_single_inode: bdi 8:0: ino=402653344 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=179 index=1 to_write=1024 wrote=2
       flush-8:0-2977  [007]  2466.699354: writeback_single_inode: bdi 8:0: ino=402653345 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=179 index=3 to_write=1024 wrote=4
       flush-8:0-2977  [007]  2466.699376: writeback_single_inode: bdi 8:0: ino=402653346 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=179 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.699400: writeback_single_inode: bdi 8:0: ino=402653347 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=179 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.699422: writeback_single_inode: bdi 8:0: ino=402653348 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=179 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.699452: writeback_single_inode: bdi 8:0: ino=402653349 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=179 index=8 to_write=1024 wrote=9
       flush-8:0-2977  [007]  2466.699481: writeback_single_inode: bdi 8:0: ino=402653350 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=178 index=9 to_write=1024 wrote=10
       flush-8:0-2977  [007]  2466.699505: writeback_single_inode: bdi 8:0: ino=134217878 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=177 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.699529: writeback_single_inode: bdi 8:0: ino=134217879 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=177 index=1 to_write=1024 wrote=2
       flush-8:0-2977  [007]  2466.699556: writeback_single_inode: bdi 8:0: ino=134217880 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=177 index=4 to_write=1024 wrote=5
       flush-8:0-2977  [007]  2466.699590: writeback_single_inode: bdi 8:0: ino=134217881 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=178 index=11 to_write=1024 wrote=12
       flush-8:0-2977  [007]  2466.699631: writeback_single_inode: bdi 8:0: ino=134217882 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=177 index=13 to_write=1024 wrote=24
       flush-8:0-2977  [007]  2466.699665: writeback_single_inode: bdi 8:0: ino=134217883 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=175 index=13 to_write=1024 wrote=20
       flush-8:0-2977  [007]  2466.699690: writeback_single_inode: bdi 8:0: ino=134217884 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=174 index=1 to_write=1024 wrote=2
       flush-8:0-2977  [007]  2466.699714: writeback_single_inode: bdi 8:0: ino=134217885 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=174 index=1 to_write=1024 wrote=2
       flush-8:0-2977  [007]  2466.699740: writeback_single_inode: bdi 8:0: ino=134217886 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=173 index=1 to_write=1024 wrote=2
       flush-8:0-2977  [007]  2466.699762: writeback_single_inode: bdi 8:0: ino=134217887 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=173 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.699786: writeback_single_inode: bdi 8:0: ino=134217888 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=173 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.699808: writeback_single_inode: bdi 8:0: ino=134217889 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=173 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.699835: writeback_single_inode: bdi 8:0: ino=134217890 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=173 index=1 to_write=1024 wrote=2
       flush-8:0-2977  [007]  2466.699859: writeback_single_inode: bdi 8:0: ino=134217891 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=173 index=1 to_write=1024 wrote=2
       flush-8:0-2977  [007]  2466.699889: writeback_single_inode: bdi 8:0: ino=134217892 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=173 index=4 to_write=1024 wrote=5
       flush-8:0-2977  [007]  2466.699912: writeback_single_inode: bdi 8:0: ino=134217893 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=173 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.699941: writeback_single_inode: bdi 8:0: ino=134217894 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=173 index=3 to_write=1024 wrote=4
       flush-8:0-2977  [007]  2466.699965: writeback_single_inode: bdi 8:0: ino=134217895 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=172 index=1 to_write=1024 wrote=2
       flush-8:0-2977  [007]  2466.699994: writeback_single_inode: bdi 8:0: ino=134217896 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=172 index=7 to_write=1024 wrote=8
       flush-8:0-2977  [007]  2466.700015: writeback_single_inode: bdi 8:0: ino=134217897 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=172 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.700040: writeback_single_inode: bdi 8:0: ino=134217898 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=172 index=1 to_write=1024 wrote=2
       flush-8:0-2977  [007]  2466.700066: writeback_single_inode: bdi 8:0: ino=134217899 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=171 index=6 to_write=1024 wrote=7
       flush-8:0-2977  [007]  2466.700094: writeback_single_inode: bdi 8:0: ino=134217900 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=171 index=6 to_write=1024 wrote=7
       flush-8:0-2977  [007]  2466.700119: writeback_single_inode: bdi 8:0: ino=134217901 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=171 index=2 to_write=1024 wrote=3
       flush-8:0-2977  [007]  2466.700149: writeback_single_inode: bdi 8:0: ino=134217902 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=154 index=6 to_write=1024 wrote=7
       flush-8:0-2977  [007]  2466.700174: writeback_single_inode: bdi 8:0: ino=134217903 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=154 index=2 to_write=1024 wrote=3
       flush-8:0-2977  [007]  2466.700198: writeback_single_inode: bdi 8:0: ino=134217904 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=154 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.700221: writeback_single_inode: bdi 8:0: ino=134217905 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=154 index=1 to_write=1024 wrote=2
       flush-8:0-2977  [007]  2466.700247: writeback_single_inode: bdi 8:0: ino=134217906 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=154 index=1 to_write=1024 wrote=2
       flush-8:0-2977  [007]  2466.700269: writeback_single_inode: bdi 8:0: ino=134217907 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=153 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.700293: writeback_single_inode: bdi 8:0: ino=134217908 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=153 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.700316: writeback_single_inode: bdi 8:0: ino=134217909 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=153 index=1 to_write=1024 wrote=2
       flush-8:0-2977  [007]  2466.700342: writeback_single_inode: bdi 8:0: ino=134217910 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=153 index=1 to_write=1024 wrote=2
       flush-8:0-2977  [007]  2466.700366: writeback_single_inode: bdi 8:0: ino=134217911 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=153 index=1 to_write=1024 wrote=2
       flush-8:0-2977  [007]  2466.700390: writeback_single_inode: bdi 8:0: ino=134217912 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=153 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.700419: writeback_single_inode: bdi 8:0: ino=134217913 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=153 index=10 to_write=1024 wrote=11
       flush-8:0-2977  [007]  2466.700446: writeback_single_inode: bdi 8:0: ino=134217914 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=152 index=1 to_write=1024 wrote=2
       flush-8:0-2977  [007]  2466.700470: writeback_single_inode: bdi 8:0: ino=134217915 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=152 index=2 to_write=1024 wrote=3
       flush-8:0-2977  [007]  2466.700496: writeback_single_inode: bdi 8:0: ino=134217916 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=152 index=2 to_write=1024 wrote=3
       flush-8:0-2977  [007]  2466.700519: writeback_single_inode: bdi 8:0: ino=134217917 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=152 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.700544: writeback_single_inode: bdi 8:0: ino=134217918 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=152 index=1 to_write=1024 wrote=2
       flush-8:0-2977  [007]  2466.700568: writeback_single_inode: bdi 8:0: ino=134217919 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=152 index=1 to_write=1024 wrote=2
       flush-8:0-2977  [007]  2466.700606: writeback_single_inode: bdi 8:0: ino=134217984 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=152 index=8 to_write=1024 wrote=9
       flush-8:0-2977  [007]  2466.700631: writeback_single_inode: bdi 8:0: ino=134217985 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=152 index=2 to_write=1024 wrote=3
       flush-8:0-2977  [007]  2466.700657: writeback_single_inode: bdi 8:0: ino=134217986 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=152 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.700680: writeback_single_inode: bdi 8:0: ino=134217987 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=152 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.700703: writeback_single_inode: bdi 8:0: ino=134217988 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=152 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.700726: writeback_single_inode: bdi 8:0: ino=134217989 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=152 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.700750: writeback_single_inode: bdi 8:0: ino=134217990 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=152 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.700772: writeback_single_inode: bdi 8:0: ino=134217991 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=151 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.700797: writeback_single_inode: bdi 8:0: ino=134217992 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=151 index=1 to_write=1024 wrote=2
       flush-8:0-2977  [007]  2466.700821: writeback_single_inode: bdi 8:0: ino=134217993 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=151 index=1 to_write=1024 wrote=2
       flush-8:0-2977  [007]  2466.700845: writeback_single_inode: bdi 8:0: ino=134217994 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=151 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.700867: writeback_single_inode: bdi 8:0: ino=134217995 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=151 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.700893: writeback_single_inode: bdi 8:0: ino=134217996 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=151 index=1 to_write=1024 wrote=2
       flush-8:0-2977  [007]  2466.700917: writeback_single_inode: bdi 8:0: ino=134217997 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=151 index=1 to_write=1024 wrote=2
       flush-8:0-2977  [007]  2466.700942: writeback_single_inode: bdi 8:0: ino=134217998 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=151 index=1 to_write=1024 wrote=2
       flush-8:0-2977  [007]  2466.700966: writeback_single_inode: bdi 8:0: ino=134217999 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=151 index=1 to_write=1024 wrote=2
       flush-8:0-2977  [007]  2466.700991: writeback_single_inode: bdi 8:0: ino=134218000 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=151 index=1 to_write=1024 wrote=2
       flush-8:0-2977  [007]  2466.701014: writeback_single_inode: bdi 8:0: ino=134218001 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=151 index=1 to_write=1024 wrote=2
       flush-8:0-2977  [007]  2466.701042: writeback_single_inode: bdi 8:0: ino=134218002 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=151 index=1 to_write=1024 wrote=2
       flush-8:0-2977  [007]  2466.701073: writeback_single_inode: bdi 8:0: ino=134218003 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=151 index=7 to_write=1024 wrote=8
       flush-8:0-2977  [007]  2466.701100: writeback_single_inode: bdi 8:0: ino=134218004 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=150 index=3 to_write=1024 wrote=4
       flush-8:0-2977  [007]  2466.701125: writeback_single_inode: bdi 8:0: ino=134218005 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=150 index=3 to_write=1024 wrote=4
       flush-8:0-2977  [007]  2466.701151: writeback_single_inode: bdi 8:0: ino=134218006 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=150 index=1 to_write=1024 wrote=2
       flush-8:0-2977  [007]  2466.701175: writeback_single_inode: bdi 8:0: ino=134218007 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=150 index=1 to_write=1024 wrote=2
       flush-8:0-2977  [007]  2466.701199: writeback_single_inode: bdi 8:0: ino=134218008 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=150 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.701222: writeback_single_inode: bdi 8:0: ino=134218009 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=150 index=1 to_write=1024 wrote=2
       flush-8:0-2977  [007]  2466.701250: writeback_single_inode: bdi 8:0: ino=134218010 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=149 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.701272: writeback_single_inode: bdi 8:0: ino=134218011 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=149 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.701300: writeback_single_inode: bdi 8:0: ino=134218012 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=149 index=1 to_write=1024 wrote=2
       flush-8:0-2977  [007]  2466.701336: writeback_single_inode: bdi 8:0: ino=134218013 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=149 index=13 to_write=1024 wrote=22
       flush-8:0-2977  [007]  2466.701361: writeback_single_inode: bdi 8:0: ino=134218014 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=148 index=1 to_write=1024 wrote=2
       flush-8:0-2977  [007]  2466.701385: writeback_single_inode: bdi 8:0: ino=134218015 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=148 index=2 to_write=1024 wrote=3
       flush-8:0-2977  [007]  2466.701411: writeback_single_inode: bdi 8:0: ino=134218016 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=148 index=2 to_write=1024 wrote=3
       flush-8:0-2977  [007]  2466.701434: writeback_single_inode: bdi 8:0: ino=134218017 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=148 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.701459: writeback_single_inode: bdi 8:0: ino=134218018 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=147 index=1 to_write=1024 wrote=2
       flush-8:0-2977  [007]  2466.701483: writeback_single_inode: bdi 8:0: ino=134218019 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=147 index=1 to_write=1024 wrote=2
       flush-8:0-2977  [007]  2466.701508: writeback_single_inode: bdi 8:0: ino=134218020 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=147 index=1 to_write=1024 wrote=2
       flush-8:0-2977  [007]  2466.701533: writeback_single_inode: bdi 8:0: ino=134218021 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=147 index=2 to_write=1024 wrote=3
       flush-8:0-2977  [007]  2466.701559: writeback_single_inode: bdi 8:0: ino=134218022 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=147 index=2 to_write=1024 wrote=3
       flush-8:0-2977  [007]  2466.701587: writeback_single_inode: bdi 8:0: ino=134218023 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=147 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.701612: writeback_single_inode: bdi 8:0: ino=134218024 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=147 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.701637: writeback_single_inode: bdi 8:0: ino=134218025 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=147 index=2 to_write=1024 wrote=3
       flush-8:0-2977  [007]  2466.701666: writeback_single_inode: bdi 8:0: ino=134218026 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=147 index=1 to_write=1024 wrote=2
       flush-8:0-2977  [007]  2466.701690: writeback_single_inode: bdi 8:0: ino=134218027 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=147 index=3 to_write=1024 wrote=4
       flush-8:0-2977  [007]  2466.701716: writeback_single_inode: bdi 8:0: ino=134218028 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=147 index=1 to_write=1024 wrote=2
       flush-8:0-2977  [007]  2466.701740: writeback_single_inode: bdi 8:0: ino=134218029 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=147 index=1 to_write=1024 wrote=2
       flush-8:0-2977  [007]  2466.701765: writeback_single_inode: bdi 8:0: ino=134218030 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=147 index=1 to_write=1024 wrote=2
       flush-8:0-2977  [007]  2466.701788: writeback_single_inode: bdi 8:0: ino=134218031 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=147 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.701812: writeback_single_inode: bdi 8:0: ino=134218032 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=146 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.701835: writeback_single_inode: bdi 8:0: ino=134218033 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=146 index=1 to_write=1024 wrote=2
       flush-8:0-2977  [007]  2466.701860: writeback_single_inode: bdi 8:0: ino=134218034 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=146 index=1 to_write=1024 wrote=2
       flush-8:0-2977  [007]  2466.701884: writeback_single_inode: bdi 8:0: ino=134218035 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=146 index=2 to_write=1024 wrote=3
       flush-8:0-2977  [007]  2466.701911: writeback_single_inode: bdi 8:0: ino=134218036 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=146 index=4 to_write=1024 wrote=5
       flush-8:0-2977  [007]  2466.701935: writeback_single_inode: bdi 8:0: ino=134218037 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=145 index=1 to_write=1024 wrote=2
       flush-8:0-2977  [007]  2466.701960: writeback_single_inode: bdi 8:0: ino=134218038 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=145 index=1 to_write=1024 wrote=2
       flush-8:0-2977  [007]  2466.701983: writeback_single_inode: bdi 8:0: ino=134218039 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=145 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.702008: writeback_single_inode: bdi 8:0: ino=134218040 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=145 index=1 to_write=1024 wrote=2
       flush-8:0-2977  [007]  2466.702033: writeback_single_inode: bdi 8:0: ino=134218041 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=145 index=2 to_write=1024 wrote=3
       flush-8:0-2977  [007]  2466.702057: writeback_single_inode: bdi 8:0: ino=134218042 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=145 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.702082: writeback_single_inode: bdi 8:0: ino=134218043 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=145 index=2 to_write=1024 wrote=3
       flush-8:0-2977  [007]  2466.702107: writeback_single_inode: bdi 8:0: ino=134218044 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=145 index=1 to_write=1024 wrote=2
       flush-8:0-2977  [007]  2466.702131: writeback_single_inode: bdi 8:0: ino=134218045 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=145 index=2 to_write=1024 wrote=3
       flush-8:0-2977  [007]  2466.702156: writeback_single_inode: bdi 8:0: ino=134218046 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=144 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.702182: writeback_single_inode: bdi 8:0: ino=134218047 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=144 index=4 to_write=1024 wrote=5
       flush-8:0-2977  [007]  2466.702205: writeback_single_inode: bdi 8:0: ino=134218048 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=144 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.702227: writeback_single_inode: bdi 8:0: ino=134218049 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=144 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.702256: writeback_single_inode: bdi 8:0: ino=134218050 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=144 index=1 to_write=1024 wrote=2
       flush-8:0-2977  [007]  2466.702279: writeback_single_inode: bdi 8:0: ino=134218051 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=144 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.702303: writeback_single_inode: bdi 8:0: ino=134218052 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=144 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.702327: writeback_single_inode: bdi 8:0: ino=134218053 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=144 index=2 to_write=1024 wrote=3
       flush-8:0-2977  [007]  2466.702354: writeback_single_inode: bdi 8:0: ino=134218054 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=143 index=4 to_write=1024 wrote=5
       flush-8:0-2977  [007]  2466.702377: writeback_single_inode: bdi 8:0: ino=134218055 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=143 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.702402: writeback_single_inode: bdi 8:0: ino=134218056 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=143 index=1 to_write=1024 wrote=2
       flush-8:0-2977  [007]  2466.702425: writeback_single_inode: bdi 8:0: ino=134218057 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=143 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.702449: writeback_single_inode: bdi 8:0: ino=134218058 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=143 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.702471: writeback_single_inode: bdi 8:0: ino=134218059 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=143 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.702526: writeback_single_inode: bdi 8:0: ino=402653351 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=143 index=13 to_write=1024 wrote=51
       flush-8:0-2977  [007]  2466.702553: writeback_single_inode: bdi 8:0: ino=402653352 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=117 index=4 to_write=1024 wrote=5
       flush-8:0-2977  [007]  2466.702588: writeback_single_inode: bdi 8:0: ino=402653353 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=117 index=3 to_write=1024 wrote=4
       flush-8:0-2977  [007]  2466.702616: writeback_single_inode: bdi 8:0: ino=134218060 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=117 index=6 to_write=1024 wrote=7
       flush-8:0-2977  [007]  2466.702645: writeback_single_inode: bdi 8:0: ino=134218061 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=116 index=7 to_write=1024 wrote=8
       flush-8:0-2977  [007]  2466.702667: writeback_single_inode: bdi 8:0: ino=134218062 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=116 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.702693: writeback_single_inode: bdi 8:0: ino=134218063 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=116 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.702715: writeback_single_inode: bdi 8:0: ino=134218064 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=116 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.702739: writeback_single_inode: bdi 8:0: ino=134218065 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=116 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.702765: writeback_single_inode: bdi 8:0: ino=134218066 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=115 index=3 to_write=1024 wrote=4
       flush-8:0-2977  [007]  2466.702791: writeback_single_inode: bdi 8:0: ino=268628487 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=115 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.702816: writeback_single_inode: bdi 8:0: ino=268628488 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=115 index=3 to_write=1024 wrote=4
       flush-8:0-2977  [007]  2466.702842: writeback_single_inode: bdi 8:0: ino=268628489 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=115 index=2 to_write=1024 wrote=3
       flush-8:0-2977  [007]  2466.702867: writeback_single_inode: bdi 8:0: ino=268628490 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=115 index=4 to_write=1024 wrote=5
       flush-8:0-2977  [007]  2466.702893: writeback_single_inode: bdi 8:0: ino=268628491 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=114 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.702919: writeback_single_inode: bdi 8:0: ino=268628492 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=114 index=6 to_write=1024 wrote=7
       flush-8:0-2977  [007]  2466.702945: writeback_single_inode: bdi 8:0: ino=268628493 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=114 index=2 to_write=1024 wrote=3
       flush-8:0-2977  [007]  2466.702967: writeback_single_inode: bdi 8:0: ino=402653355 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=113 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.702993: writeback_single_inode: bdi 8:0: ino=402653356 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=113 index=1 to_write=1024 wrote=2
       flush-8:0-2977  [007]  2466.703019: writeback_single_inode: bdi 8:0: ino=402653357 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=113 index=6 to_write=1024 wrote=7
       flush-8:0-2977  [007]  2466.703044: writeback_single_inode: bdi 8:0: ino=402653358 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=113 index=1 to_write=1024 wrote=2
       flush-8:0-2977  [007]  2466.703069: writeback_single_inode: bdi 8:0: ino=402653359 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=113 index=1 to_write=1024 wrote=2
       flush-8:0-2977  [007]  2466.703096: writeback_single_inode: bdi 8:0: ino=402653360 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=112 index=4 to_write=1024 wrote=5
       flush-8:0-2977  [007]  2466.703120: writeback_single_inode: bdi 8:0: ino=402653361 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=112 index=2 to_write=1024 wrote=3
       flush-8:0-2977  [007]  2466.703147: writeback_single_inode: bdi 8:0: ino=402653362 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=112 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.703170: writeback_single_inode: bdi 8:0: ino=402653363 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=112 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.703199: writeback_single_inode: bdi 8:0: ino=402653364 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=112 index=3 to_write=1024 wrote=4
       flush-8:0-2977  [007]  2466.703223: writeback_single_inode: bdi 8:0: ino=402653365 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=111 index=1 to_write=1024 wrote=2
       flush-8:0-2977  [007]  2466.703247: writeback_single_inode: bdi 8:0: ino=402653366 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=111 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.703270: writeback_single_inode: bdi 8:0: ino=402653367 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=111 index=1 to_write=1024 wrote=2
       flush-8:0-2977  [007]  2466.703296: writeback_single_inode: bdi 8:0: ino=402653368 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=111 index=2 to_write=1024 wrote=3
       flush-8:0-2977  [007]  2466.703321: writeback_single_inode: bdi 8:0: ino=402653369 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=111 index=5 to_write=1024 wrote=6
       flush-8:0-2977  [007]  2466.703350: writeback_single_inode: bdi 8:0: ino=402653370 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=110 index=8 to_write=1024 wrote=9
       flush-8:0-2977  [007]  2466.703373: writeback_single_inode: bdi 8:0: ino=134218067 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=110 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.703397: writeback_single_inode: bdi 8:0: ino=134218068 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=110 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.703421: writeback_single_inode: bdi 8:0: ino=134218069 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=110 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.703445: writeback_single_inode: bdi 8:0: ino=134218070 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=109 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.703471: writeback_single_inode: bdi 8:0: ino=134218071 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=109 index=5 to_write=1024 wrote=6
       flush-8:0-2977  [007]  2466.703499: writeback_single_inode: bdi 8:0: ino=134218072 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=109 index=1 to_write=1024 wrote=2
       flush-8:0-2977  [007]  2466.703523: writeback_single_inode: bdi 8:0: ino=134218073 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=109 index=1 to_write=1024 wrote=2
       flush-8:0-2977  [007]  2466.703552: writeback_single_inode: bdi 8:0: ino=134218074 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=109 index=7 to_write=1024 wrote=8
       flush-8:0-2977  [007]  2466.703579: writeback_single_inode: bdi 8:0: ino=134218075 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=109 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.703609: writeback_single_inode: bdi 8:0: ino=159 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=109 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.703633: writeback_single_inode: bdi 8:0: ino=160 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=108 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.703658: writeback_single_inode: bdi 8:0: ino=161 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=108 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.703680: writeback_single_inode: bdi 8:0: ino=162 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=108 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.703709: writeback_single_inode: bdi 8:0: ino=163 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=108 index=3 to_write=1024 wrote=4
       flush-8:0-2977  [007]  2466.703733: writeback_single_inode: bdi 8:0: ino=164 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=108 index=1 to_write=1024 wrote=2
       flush-8:0-2977  [007]  2466.703758: writeback_single_inode: bdi 8:0: ino=165 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=108 index=1 to_write=1024 wrote=2
       flush-8:0-2977  [007]  2466.703781: writeback_single_inode: bdi 8:0: ino=268628495 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=108 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.703805: writeback_single_inode: bdi 8:0: ino=268628496 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=108 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.703829: writeback_single_inode: bdi 8:0: ino=134218077 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=108 index=1 to_write=1024 wrote=2
       flush-8:0-2977  [007]  2466.703853: writeback_single_inode: bdi 8:0: ino=134218078 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=108 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.703875: writeback_single_inode: bdi 8:0: ino=134218079 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=108 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.703901: writeback_single_inode: bdi 8:0: ino=134218080 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=108 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.703926: writeback_single_inode: bdi 8:0: ino=402653372 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=107 index=1 to_write=1024 wrote=2
       flush-8:0-2977  [007]  2466.703950: writeback_single_inode: bdi 8:0: ino=402653373 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=107 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.703972: writeback_single_inode: bdi 8:0: ino=402653374 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=107 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.703996: writeback_single_inode: bdi 8:0: ino=402653375 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=107 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.704019: writeback_single_inode: bdi 8:0: ino=402653408 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=107 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.704042: writeback_single_inode: bdi 8:0: ino=402653409 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=107 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.704065: writeback_single_inode: bdi 8:0: ino=402653410 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=107 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.704090: writeback_single_inode: bdi 8:0: ino=402653411 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=107 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.704113: writeback_single_inode: bdi 8:0: ino=134218081 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=107 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.704140: writeback_single_inode: bdi 8:0: ino=134218082 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=107 index=4 to_write=1024 wrote=5
       flush-8:0-2977  [007]  2466.704163: writeback_single_inode: bdi 8:0: ino=167 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=107 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.704195: writeback_single_inode: bdi 8:0: ino=168 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=107 index=1 to_write=1024 wrote=2
       flush-8:0-2977  [007]  2466.704218: writeback_single_inode: bdi 8:0: ino=169 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=107 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.704243: writeback_single_inode: bdi 8:0: ino=170 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=106 index=1 to_write=1024 wrote=2
       flush-8:0-2977  [007]  2466.704266: writeback_single_inode: bdi 8:0: ino=171 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=106 index=1 to_write=1024 wrote=2
       flush-8:0-2977  [007]  2466.704292: writeback_single_inode: bdi 8:0: ino=172 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=106 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.704317: writeback_single_inode: bdi 8:0: ino=134218084 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=106 index=2 to_write=1024 wrote=3
       flush-8:0-2977  [007]  2466.704343: writeback_single_inode: bdi 8:0: ino=134218085 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=106 index=1 to_write=1024 wrote=2
       flush-8:0-2977  [007]  2466.704366: writeback_single_inode: bdi 8:0: ino=173 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=106 index=1 to_write=1024 wrote=2
       flush-8:0-2977  [007]  2466.704391: writeback_single_inode: bdi 8:0: ino=174 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=106 index=1 to_write=1024 wrote=2
       flush-8:0-2977  [007]  2466.704413: writeback_single_inode: bdi 8:0: ino=268628498 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=106 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.704439: writeback_single_inode: bdi 8:0: ino=268628499 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=106 index=2 to_write=1024 wrote=3
       flush-8:0-2977  [007]  2466.704461: writeback_single_inode: bdi 8:0: ino=268628500 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=106 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.704485: writeback_single_inode: bdi 8:0: ino=268628501 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=105 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.704507: writeback_single_inode: bdi 8:0: ino=268628502 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=105 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.704532: writeback_single_inode: bdi 8:0: ino=268628503 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=105 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.704555: writeback_single_inode: bdi 8:0: ino=268628504 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=105 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.704584: writeback_single_inode: bdi 8:0: ino=268628505 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=106 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.704607: writeback_single_inode: bdi 8:0: ino=268628506 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=106 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.704631: writeback_single_inode: bdi 8:0: ino=268628507 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=106 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.704654: writeback_single_inode: bdi 8:0: ino=268628508 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=106 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.704681: writeback_single_inode: bdi 8:0: ino=268628509 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=106 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.704704: writeback_single_inode: bdi 8:0: ino=268628510 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=106 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.704728: writeback_single_inode: bdi 8:0: ino=268628511 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=106 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.704751: writeback_single_inode: bdi 8:0: ino=268628512 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=106 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.704780: writeback_single_inode: bdi 8:0: ino=268628513 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=106 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.704804: writeback_single_inode: bdi 8:0: ino=268628514 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=106 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.704828: writeback_single_inode: bdi 8:0: ino=268628515 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=105 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.704850: writeback_single_inode: bdi 8:0: ino=402653413 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=105 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.704875: writeback_single_inode: bdi 8:0: ino=176 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=105 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.704898: writeback_single_inode: bdi 8:0: ino=177 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=105 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.704922: writeback_single_inode: bdi 8:0: ino=178 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=105 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.704946: writeback_single_inode: bdi 8:0: ino=179 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=105 index=1 to_write=1024 wrote=2
       flush-8:0-2977  [007]  2466.704970: writeback_single_inode: bdi 8:0: ino=180 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=105 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.704992: writeback_single_inode: bdi 8:0: ino=181 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=105 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.705018: writeback_single_inode: bdi 8:0: ino=182 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=105 index=2 to_write=1024 wrote=3
       flush-8:0-2977  [007]  2466.705041: writeback_single_inode: bdi 8:0: ino=183 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=105 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.705065: writeback_single_inode: bdi 8:0: ino=184 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=105 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.705087: writeback_single_inode: bdi 8:0: ino=185 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=105 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.705111: writeback_single_inode: bdi 8:0: ino=186 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=104 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.705133: writeback_single_inode: bdi 8:0: ino=187 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=104 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.705163: writeback_single_inode: bdi 8:0: ino=134218087 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=104 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.705186: writeback_single_inode: bdi 8:0: ino=134218088 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=104 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.705209: writeback_single_inode: bdi 8:0: ino=134218089 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=104 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.705232: writeback_single_inode: bdi 8:0: ino=188 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=104 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.705258: writeback_single_inode: bdi 8:0: ino=268628517 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=104 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.705281: writeback_single_inode: bdi 8:0: ino=268628518 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=104 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.705305: writeback_single_inode: bdi 8:0: ino=268628519 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=104 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.705328: writeback_single_inode: bdi 8:0: ino=268628520 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=104 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.705351: writeback_single_inode: bdi 8:0: ino=268628521 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=104 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.705374: writeback_single_inode: bdi 8:0: ino=268628522 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=104 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.705398: writeback_single_inode: bdi 8:0: ino=268628523 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=104 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.705421: writeback_single_inode: bdi 8:0: ino=268628524 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=103 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.705444: writeback_single_inode: bdi 8:0: ino=268628525 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=103 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.705467: writeback_single_inode: bdi 8:0: ino=402653415 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=103 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.705491: writeback_single_inode: bdi 8:0: ino=189 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=103 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.705513: writeback_single_inode: bdi 8:0: ino=190 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=103 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.705538: writeback_single_inode: bdi 8:0: ino=256 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=103 index=1 to_write=1024 wrote=2
       flush-8:0-2977  [007]  2466.705590: writeback_single_inode: bdi 8:0: ino=134218091 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=104 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.705618: writeback_single_inode: bdi 8:0: ino=134218092 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=104 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.705643: writeback_single_inode: bdi 8:0: ino=134218093 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=104 index=1 to_write=1024 wrote=2
       flush-8:0-2977  [007]  2466.705669: writeback_single_inode: bdi 8:0: ino=134218094 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=104 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.705694: writeback_single_inode: bdi 8:0: ino=268628527 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=103 index=2 to_write=1024 wrote=3
       flush-8:0-2977  [007]  2466.705719: writeback_single_inode: bdi 8:0: ino=257 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=103 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.705743: writeback_single_inode: bdi 8:0: ino=258 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=103 index=1 to_write=1024 wrote=2
       flush-8:0-2977  [007]  2466.705771: writeback_single_inode: bdi 8:0: ino=134218095 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=103 index=4 to_write=1024 wrote=5
       flush-8:0-2977  [007]  2466.705795: writeback_single_inode: bdi 8:0: ino=402653417 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=103 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.705819: writeback_single_inode: bdi 8:0: ino=402653418 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=103 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.705841: writeback_single_inode: bdi 8:0: ino=402653419 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=103 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.705869: writeback_single_inode: bdi 8:0: ino=402653420 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=103 index=1 to_write=1024 wrote=2
       flush-8:0-2977  [007]  2466.705891: writeback_single_inode: bdi 8:0: ino=402653421 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=103 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.705916: writeback_single_inode: bdi 8:0: ino=134218096 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=103 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.705938: writeback_single_inode: bdi 8:0: ino=134218097 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=103 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.705964: writeback_single_inode: bdi 8:0: ino=134218098 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=103 index=1 to_write=1024 wrote=2
       flush-8:0-2977  [007]  2466.705987: writeback_single_inode: bdi 8:0: ino=260 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=102 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.706011: writeback_single_inode: bdi 8:0: ino=261 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=102 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.706033: writeback_single_inode: bdi 8:0: ino=262 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=102 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.706057: writeback_single_inode: bdi 8:0: ino=263 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=102 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.706079: writeback_single_inode: bdi 8:0: ino=264 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=102 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.706104: writeback_single_inode: bdi 8:0: ino=134218100 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=102 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.706135: writeback_single_inode: bdi 8:0: ino=134218101 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=102 index=13 to_write=1024 wrote=14
       flush-8:0-2977  [007]  2466.706161: writeback_single_inode: bdi 8:0: ino=134218102 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=102 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.706183: writeback_single_inode: bdi 8:0: ino=134218103 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=102 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.706210: writeback_single_inode: bdi 8:0: ino=134218104 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=101 index=3 to_write=1024 wrote=4
       flush-8:0-2977  [007]  2466.706232: writeback_single_inode: bdi 8:0: ino=134218105 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=101 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.706258: writeback_single_inode: bdi 8:0: ino=134218106 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=101 index=1 to_write=1024 wrote=2
       flush-8:0-2977  [007]  2466.706283: writeback_single_inode: bdi 8:0: ino=134218107 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=101 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.706307: writeback_single_inode: bdi 8:0: ino=134218108 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=101 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.706330: writeback_single_inode: bdi 8:0: ino=134218109 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=79 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.706354: writeback_single_inode: bdi 8:0: ino=134218110 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=79 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.706377: writeback_single_inode: bdi 8:0: ino=134218111 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=78 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.706401: writeback_single_inode: bdi 8:0: ino=268628529 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=78 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.706429: writeback_single_inode: bdi 8:0: ino=268628530 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=78 index=8 to_write=1024 wrote=9
       flush-8:0-2977  [007]  2466.706459: writeback_single_inode: bdi 8:0: ino=268628531 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=78 index=1 to_write=1024 wrote=2
       flush-8:0-2977  [007]  2466.706482: writeback_single_inode: bdi 8:0: ino=268628532 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=78 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.706511: writeback_single_inode: bdi 8:0: ino=402653423 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=78 index=5 to_write=1024 wrote=6
       flush-8:0-2977  [007]  2466.706537: writeback_single_inode: bdi 8:0: ino=402653424 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=78 index=4 to_write=1024 wrote=5
       flush-8:0-2977  [007]  2466.706566: writeback_single_inode: bdi 8:0: ino=402653425 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=78 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.706589: writeback_single_inode: bdi 8:0: ino=402653426 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=78 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.706612: writeback_single_inode: bdi 8:0: ino=402653427 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=78 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.706634: writeback_single_inode: bdi 8:0: ino=402653428 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=78 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.706660: writeback_single_inode: bdi 8:0: ino=402653429 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=78 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.706685: writeback_single_inode: bdi 8:0: ino=268628533 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=78 index=2 to_write=1024 wrote=3
       flush-8:0-2977  [007]  2466.706709: writeback_single_inode: bdi 8:0: ino=268628534 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=78 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.706732: writeback_single_inode: bdi 8:0: ino=268628535 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=78 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.706759: writeback_single_inode: bdi 8:0: ino=268628536 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=78 index=4 to_write=1024 wrote=5
       flush-8:0-2977  [007]  2466.706782: writeback_single_inode: bdi 8:0: ino=268628537 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=77 index=1 to_write=1024 wrote=2
       flush-8:0-2977  [007]  2466.706807: writeback_single_inode: bdi 8:0: ino=134218144 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=77 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.706837: writeback_single_inode: bdi 8:0: ino=134218145 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=77 index=1 to_write=1024 wrote=2
       flush-8:0-2977  [007]  2466.706862: writeback_single_inode: bdi 8:0: ino=134218146 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=77 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.706885: writeback_single_inode: bdi 8:0: ino=134218147 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=77 index=1 to_write=1024 wrote=2
       flush-8:0-2977  [007]  2466.706912: writeback_single_inode: bdi 8:0: ino=134218148 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=77 index=4 to_write=1024 wrote=5
       flush-8:0-2977  [007]  2466.706936: writeback_single_inode: bdi 8:0: ino=266 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=77 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.706961: writeback_single_inode: bdi 8:0: ino=267 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=77 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.706991: writeback_single_inode: bdi 8:0: ino=268 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=77 index=12 to_write=1024 wrote=13
       flush-8:0-2977  [007]  2466.707019: writeback_single_inode: bdi 8:0: ino=269 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=76 index=4 to_write=1024 wrote=5
       flush-8:0-2977  [007]  2466.707042: writeback_single_inode: bdi 8:0: ino=270 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=75 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.707068: writeback_single_inode: bdi 8:0: ino=134218150 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=75 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.707094: writeback_single_inode: bdi 8:0: ino=134218151 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=75 index=4 to_write=1024 wrote=5
       flush-8:0-2977  [007]  2466.707118: writeback_single_inode: bdi 8:0: ino=134218152 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=75 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.707145: writeback_single_inode: bdi 8:0: ino=134218153 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=74 index=6 to_write=1024 wrote=7
       flush-8:0-2977  [007]  2466.707170: writeback_single_inode: bdi 8:0: ino=134218154 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=74 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.707199: writeback_single_inode: bdi 8:0: ino=134218155 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=74 index=8 to_write=1024 wrote=9
       flush-8:0-2977  [007]  2466.707226: writeback_single_inode: bdi 8:0: ino=134218156 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=73 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.707249: writeback_single_inode: bdi 8:0: ino=134218157 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=73 index=1 to_write=1024 wrote=2
       flush-8:0-2977  [007]  2466.707276: writeback_single_inode: bdi 8:0: ino=134218158 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=73 index=3 to_write=1024 wrote=4
       flush-8:0-2977  [007]  2466.707303: writeback_single_inode: bdi 8:0: ino=134218159 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=73 index=6 to_write=1024 wrote=7
       flush-8:0-2977  [007]  2466.707328: writeback_single_inode: bdi 8:0: ino=134218160 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=72 index=1 to_write=1024 wrote=2
       flush-8:0-2977  [007]  2466.707352: writeback_single_inode: bdi 8:0: ino=134218161 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=72 index=1 to_write=1024 wrote=2
       flush-8:0-2977  [007]  2466.707377: writeback_single_inode: bdi 8:0: ino=134218162 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=72 index=1 to_write=1024 wrote=2
       flush-8:0-2977  [007]  2466.707400: writeback_single_inode: bdi 8:0: ino=268628539 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=72 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.707424: writeback_single_inode: bdi 8:0: ino=268628540 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=72 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.707447: writeback_single_inode: bdi 8:0: ino=268628541 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=72 index=1 to_write=1024 wrote=2
       flush-8:0-2977  [007]  2466.707473: writeback_single_inode: bdi 8:0: ino=268628542 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=72 index=1 to_write=1024 wrote=2
       flush-8:0-2977  [007]  2466.707497: writeback_single_inode: bdi 8:0: ino=268628543 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=72 index=1 to_write=1024 wrote=2
       flush-8:0-2977  [007]  2466.707523: writeback_single_inode: bdi 8:0: ino=402653431 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=72 index=1 to_write=1024 wrote=2
       flush-8:0-2977  [007]  2466.707546: writeback_single_inode: bdi 8:0: ino=272 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=71 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.707576: writeback_single_inode: bdi 8:0: ino=273 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=72 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.707601: writeback_single_inode: bdi 8:0: ino=274 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=72 index=1 to_write=1024 wrote=2
       flush-8:0-2977  [007]  2466.707625: writeback_single_inode: bdi 8:0: ino=275 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=72 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.707648: writeback_single_inode: bdi 8:0: ino=276 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=72 index=1 to_write=1024 wrote=2
       flush-8:0-2977  [007]  2466.707680: writeback_single_inode: bdi 8:0: ino=277 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=72 index=2 to_write=1024 wrote=3
       flush-8:0-2977  [007]  2466.707702: writeback_single_inode: bdi 8:0: ino=278 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=72 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.707727: writeback_single_inode: bdi 8:0: ino=279 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=72 index=2 to_write=1024 wrote=3
       flush-8:0-2977  [007]  2466.707751: writeback_single_inode: bdi 8:0: ino=280 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=72 index=1 to_write=1024 wrote=2
       flush-8:0-2977  [007]  2466.707778: writeback_single_inode: bdi 8:0: ino=134218163 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=71 index=3 to_write=1024 wrote=4
       flush-8:0-2977  [007]  2466.707801: writeback_single_inode: bdi 8:0: ino=134218164 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=71 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.707825: writeback_single_inode: bdi 8:0: ino=134218166 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=71 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.707848: writeback_single_inode: bdi 8:0: ino=134218167 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=71 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.707874: writeback_single_inode: bdi 8:0: ino=134218168 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=71 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.707897: writeback_single_inode: bdi 8:0: ino=134218169 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=71 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.707922: writeback_single_inode: bdi 8:0: ino=134218170 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=71 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.707949: writeback_single_inode: bdi 8:0: ino=134218171 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=71 index=5 to_write=1024 wrote=6
       flush-8:0-2977  [007]  2466.707975: writeback_single_inode: bdi 8:0: ino=268628609 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=70 index=1 to_write=1024 wrote=2
       flush-8:0-2977  [007]  2466.708000: writeback_single_inode: bdi 8:0: ino=402653433 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=70 index=1 to_write=1024 wrote=2
       flush-8:0-2977  [007]  2466.708027: writeback_single_inode: bdi 8:0: ino=402653434 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=70 index=2 to_write=1024 wrote=3
       flush-8:0-2977  [007]  2466.708054: writeback_single_inode: bdi 8:0: ino=402653435 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=70 index=4 to_write=1024 wrote=5
       flush-8:0-2977  [007]  2466.708079: writeback_single_inode: bdi 8:0: ino=134218172 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=70 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.708102: writeback_single_inode: bdi 8:0: ino=134218173 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=69 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.708129: writeback_single_inode: bdi 8:0: ino=134218174 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=69 index=1 to_write=1024 wrote=2
       flush-8:0-2977  [007]  2466.708153: writeback_single_inode: bdi 8:0: ino=134218175 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=69 index=1 to_write=1024 wrote=2
       flush-8:0-2977  [007]  2466.708182: writeback_single_inode: bdi 8:0: ino=282 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=69 index=3 to_write=1024 wrote=4
       flush-8:0-2977  [007]  2466.708209: writeback_single_inode: bdi 8:0: ino=283 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=69 index=5 to_write=1024 wrote=6
       flush-8:0-2977  [007]  2466.708236: writeback_single_inode: bdi 8:0: ino=284 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=68 index=2 to_write=1024 wrote=3
       flush-8:0-2977  [007]  2466.708262: writeback_single_inode: bdi 8:0: ino=285 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=68 index=4 to_write=1024 wrote=5
       flush-8:0-2977  [007]  2466.708292: writeback_single_inode: bdi 8:0: ino=286 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=68 index=3 to_write=1024 wrote=4
       flush-8:0-2977  [007]  2466.708317: writeback_single_inode: bdi 8:0: ino=287 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=67 index=2 to_write=1024 wrote=3
       flush-8:0-2977  [007]  2466.708344: writeback_single_inode: bdi 8:0: ino=288 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=67 index=2 to_write=1024 wrote=3
       flush-8:0-2977  [007]  2466.708367: writeback_single_inode: bdi 8:0: ino=289 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=67 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.708392: writeback_single_inode: bdi 8:0: ino=134218177 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=67 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.708416: writeback_single_inode: bdi 8:0: ino=134218178 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=67 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.708441: writeback_single_inode: bdi 8:0: ino=134218179 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=67 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.708464: writeback_single_inode: bdi 8:0: ino=134218180 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=67 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.708488: writeback_single_inode: bdi 8:0: ino=134218181 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=67 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.708511: writeback_single_inode: bdi 8:0: ino=134218182 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=67 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.708536: writeback_single_inode: bdi 8:0: ino=134218183 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=66 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.708564: writeback_single_inode: bdi 8:0: ino=134218184 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=67 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.708589: writeback_single_inode: bdi 8:0: ino=134218185 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=67 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.708612: writeback_single_inode: bdi 8:0: ino=134218186 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=67 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.708638: writeback_single_inode: bdi 8:0: ino=134218187 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=67 index=1 to_write=1024 wrote=2
       flush-8:0-2977  [007]  2466.708660: writeback_single_inode: bdi 8:0: ino=134218188 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=67 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.708686: writeback_single_inode: bdi 8:0: ino=134218189 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=67 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.708728: writeback_single_inode: bdi 8:0: ino=134218190 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=67 index=13 to_write=1024 wrote=29
       flush-8:0-2977  [007]  2466.708755: writeback_single_inode: bdi 8:0: ino=291 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=65 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.708779: writeback_single_inode: bdi 8:0: ino=402653437 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=65 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.708805: writeback_single_inode: bdi 8:0: ino=134218192 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=65 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.708828: writeback_single_inode: bdi 8:0: ino=134218193 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=65 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.708853: writeback_single_inode: bdi 8:0: ino=134218194 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=65 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.708876: writeback_single_inode: bdi 8:0: ino=268628612 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=65 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.708905: writeback_single_inode: bdi 8:0: ino=402653438 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=65 index=3 to_write=1024 wrote=4
       flush-8:0-2977  [007]  2466.708928: writeback_single_inode: bdi 8:0: ino=402653440 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=64 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.708953: writeback_single_inode: bdi 8:0: ino=402653441 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=64 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.708976: writeback_single_inode: bdi 8:0: ino=293 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=64 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.709004: writeback_single_inode: bdi 8:0: ino=294 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=64 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.709027: writeback_single_inode: bdi 8:0: ino=268628614 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=64 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.709052: writeback_single_inode: bdi 8:0: ino=268628615 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=64 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.709075: writeback_single_inode: bdi 8:0: ino=134218196 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=64 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.709100: writeback_single_inode: bdi 8:0: ino=134218197 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=64 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.709124: writeback_single_inode: bdi 8:0: ino=134218198 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=64 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.709149: writeback_single_inode: bdi 8:0: ino=402653443 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=64 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.709173: writeback_single_inode: bdi 8:0: ino=134218200 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=64 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.709200: writeback_single_inode: bdi 8:0: ino=134218201 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=63 index=1 to_write=1024 wrote=2
       flush-8:0-2977  [007]  2466.709239: writeback_single_inode: bdi 8:0: ino=134218202 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=63 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.709266: writeback_single_inode: bdi 8:0: ino=134218203 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=63 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.709289: writeback_single_inode: bdi 8:0: ino=134218204 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=63 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.709315: writeback_single_inode: bdi 8:0: ino=268628617 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=63 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.709339: writeback_single_inode: bdi 8:0: ino=402653445 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=63 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.709365: writeback_single_inode: bdi 8:0: ino=297 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=63 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.709389: writeback_single_inode: bdi 8:0: ino=298 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=63 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.709413: writeback_single_inode: bdi 8:0: ino=299 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=41 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.709435: writeback_single_inode: bdi 8:0: ino=300 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=41 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.709460: writeback_single_inode: bdi 8:0: ino=402653446 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=41 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.709483: writeback_single_inode: bdi 8:0: ino=402653447 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=41 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.709509: writeback_single_inode: bdi 8:0: ino=402653448 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=41 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.709532: writeback_single_inode: bdi 8:0: ino=134218206 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=41 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.709562: writeback_single_inode: bdi 8:0: ino=134218207 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=42 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.709585: writeback_single_inode: bdi 8:0: ino=134218240 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=42 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.709609: writeback_single_inode: bdi 8:0: ino=134218241 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=42 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.709631: writeback_single_inode: bdi 8:0: ino=134218242 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=42 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.709655: writeback_single_inode: bdi 8:0: ino=402653449 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=41 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.709678: writeback_single_inode: bdi 8:0: ino=268628618 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=41 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.709706: writeback_single_inode: bdi 8:0: ino=268628619 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=41 index=1 to_write=1024 wrote=2
       flush-8:0-2977  [007]  2466.709729: writeback_single_inode: bdi 8:0: ino=268628620 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=41 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.709753: writeback_single_inode: bdi 8:0: ino=268628621 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=41 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.709776: writeback_single_inode: bdi 8:0: ino=268628622 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=41 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.709800: writeback_single_inode: bdi 8:0: ino=268628623 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=41 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.709822: writeback_single_inode: bdi 8:0: ino=268628624 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=41 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.709846: writeback_single_inode: bdi 8:0: ino=268628625 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=41 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.709869: writeback_single_inode: bdi 8:0: ino=268628626 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=41 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.709896: writeback_single_inode: bdi 8:0: ino=268628627 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=41 index=2 to_write=1024 wrote=3
       flush-8:0-2977  [007]  2466.709919: writeback_single_inode: bdi 8:0: ino=268628628 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=41 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.709944: writeback_single_inode: bdi 8:0: ino=268628629 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=40 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.709966: writeback_single_inode: bdi 8:0: ino=268628630 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=40 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.709990: writeback_single_inode: bdi 8:0: ino=268628631 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=40 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.710013: writeback_single_inode: bdi 8:0: ino=268628632 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=40 index=1 to_write=1024 wrote=2
       flush-8:0-2977  [007]  2466.710037: writeback_single_inode: bdi 8:0: ino=268628634 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=40 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.710060: writeback_single_inode: bdi 8:0: ino=268628635 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=40 index=1 to_write=1024 wrote=2
       flush-8:0-2977  [007]  2466.710087: writeback_single_inode: bdi 8:0: ino=402653451 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=40 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.710109: writeback_single_inode: bdi 8:0: ino=402653452 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=40 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.710134: writeback_single_inode: bdi 8:0: ino=302 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=40 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.710156: writeback_single_inode: bdi 8:0: ino=303 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=40 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.710187: writeback_single_inode: bdi 8:0: ino=402653453 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=40 index=2 to_write=1024 wrote=3
       flush-8:0-2977  [007]  2466.710222: writeback_single_inode: bdi 8:0: ino=268628636 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=39 index=13 to_write=1024 wrote=15
       flush-8:0-2977  [007]  2466.710250: writeback_single_inode: bdi 8:0: ino=134218243 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=39 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.710272: writeback_single_inode: bdi 8:0: ino=134218244 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=39 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.710296: writeback_single_inode: bdi 8:0: ino=134218246 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=39 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.710320: writeback_single_inode: bdi 8:0: ino=134218247 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=39 index=1 to_write=1024 wrote=2
       flush-8:0-2977  [007]  2466.710345: writeback_single_inode: bdi 8:0: ino=134218248 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=39 index=1 to_write=1024 wrote=2
       flush-8:0-2977  [007]  2466.710369: writeback_single_inode: bdi 8:0: ino=134218249 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=39 index=1 to_write=1024 wrote=2
       flush-8:0-2977  [007]  2466.710395: writeback_single_inode: bdi 8:0: ino=134218250 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=39 index=1 to_write=1024 wrote=2
       flush-8:0-2977  [007]  2466.710419: writeback_single_inode: bdi 8:0: ino=134218251 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=39 index=1 to_write=1024 wrote=2
       flush-8:0-2977  [007]  2466.710446: writeback_single_inode: bdi 8:0: ino=134218252 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=39 index=1 to_write=1024 wrote=2
       flush-8:0-2977  [007]  2466.710470: writeback_single_inode: bdi 8:0: ino=134218253 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=0 index=2 to_write=1024 wrote=3
       flush-8:0-2977  [007]  2466.710497: writeback_single_inode: bdi 8:0: ino=134218254 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=0 index=3 to_write=1024 wrote=4
       flush-8:0-2977  [007]  2466.710522: writeback_single_inode: bdi 8:0: ino=268628638 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=0 index=2 to_write=1024 wrote=3
       flush-8:0-2977  [007]  2466.710554: writeback_single_inode: bdi 8:0: ino=268628639 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=0 index=3 to_write=1024 wrote=4
       flush-8:0-2977  [007]  2466.710577: writeback_single_inode: bdi 8:0: ino=268628640 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=0 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.710603: writeback_single_inode: bdi 8:0: ino=268628641 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=0 index=1 to_write=1024 wrote=2
       flush-8:0-2977  [007]  2466.710626: writeback_single_inode: bdi 8:0: ino=268628642 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=0 index=1 to_write=1024 wrote=2
       flush-8:0-2977  [007]  2466.710651: writeback_single_inode: bdi 8:0: ino=268628643 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=0 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.710675: writeback_single_inode: bdi 8:0: ino=268628644 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=0 index=1 to_write=1024 wrote=2
       flush-8:0-2977  [007]  2466.710708: writeback_single_inode: bdi 8:0: ino=268628645 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=0 index=4 to_write=1024 wrote=5
       flush-8:0-2977  [007]  2466.710731: writeback_single_inode: bdi 8:0: ino=268628646 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=0 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.710755: writeback_single_inode: bdi 8:0: ino=268628647 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=0 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.710778: writeback_single_inode: bdi 8:0: ino=268628648 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=0 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.710803: writeback_single_inode: bdi 8:0: ino=268628649 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=0 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.710826: writeback_single_inode: bdi 8:0: ino=268628650 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=0 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.710850: writeback_single_inode: bdi 8:0: ino=268628651 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=0 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.710880: writeback_single_inode: bdi 8:0: ino=134218255 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=0 index=2 to_write=1024 wrote=3
       flush-8:0-2977  [007]  2466.710907: writeback_single_inode: bdi 8:0: ino=402653455 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=0 index=1 to_write=1024 wrote=2
       flush-8:0-2977  [007]  2466.710931: writeback_single_inode: bdi 8:0: ino=402653456 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=0 index=1 to_write=1024 wrote=2
       flush-8:0-2977  [007]  2466.710961: writeback_single_inode: bdi 8:0: ino=134218256 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=0 index=6 to_write=1024 wrote=7
       flush-8:0-2977  [007]  2466.710984: writeback_single_inode: bdi 8:0: ino=134218257 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=0 index=1 to_write=1024 wrote=2
       flush-8:0-2977  [007]  2466.711010: writeback_single_inode: bdi 8:0: ino=134218258 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=0 index=2 to_write=1024 wrote=3
       flush-8:0-2977  [007]  2466.711038: writeback_single_inode: bdi 8:0: ino=305 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=0 index=1 to_write=1024 wrote=2
       flush-8:0-2977  [007]  2466.711064: writeback_single_inode: bdi 8:0: ino=306 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=0 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.711087: writeback_single_inode: bdi 8:0: ino=134218260 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=0 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.711111: writeback_single_inode: bdi 8:0: ino=134218261 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=0 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.711133: writeback_single_inode: bdi 8:0: ino=134218262 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=0 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.711157: writeback_single_inode: bdi 8:0: ino=134218263 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=0 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.711179: writeback_single_inode: bdi 8:0: ino=134218264 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=0 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.711205: writeback_single_inode: bdi 8:0: ino=134218265 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=0 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.711228: writeback_single_inode: bdi 8:0: ino=134218266 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=0 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.711254: writeback_single_inode: bdi 8:0: ino=134218267 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=0 index=1 to_write=1024 wrote=2
       flush-8:0-2977  [007]  2466.711279: writeback_single_inode: bdi 8:0: ino=134218268 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=0 index=2 to_write=1024 wrote=3
       flush-8:0-2977  [007]  2466.711307: writeback_single_inode: bdi 8:0: ino=134218269 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=0 index=3 to_write=1024 wrote=4
       flush-8:0-2977  [007]  2466.711330: writeback_single_inode: bdi 8:0: ino=134218270 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=0 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.711356: writeback_single_inode: bdi 8:0: ino=134218271 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=0 index=2 to_write=1024 wrote=3
       flush-8:0-2977  [007]  2466.711378: writeback_single_inode: bdi 8:0: ino=134218272 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=0 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.711402: writeback_single_inode: bdi 8:0: ino=134218273 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=0 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.711424: writeback_single_inode: bdi 8:0: ino=134218274 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=0 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.711452: writeback_single_inode: bdi 8:0: ino=134218275 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=0 index=4 to_write=1024 wrote=5
       flush-8:0-2977  [007]  2466.711474: writeback_single_inode: bdi 8:0: ino=134218276 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=0 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.711499: writeback_single_inode: bdi 8:0: ino=134218277 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=0 index=1 to_write=1024 wrote=2
       flush-8:0-2977  [007]  2466.711521: writeback_single_inode: bdi 8:0: ino=134218278 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=0 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.711553: writeback_single_inode: bdi 8:0: ino=134218279 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=0 index=1 to_write=1024 wrote=2
       flush-8:0-2977  [007]  2466.711575: writeback_single_inode: bdi 8:0: ino=134218280 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=0 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.711602: writeback_single_inode: bdi 8:0: ino=134218281 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=0 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.711626: writeback_single_inode: bdi 8:0: ino=134218282 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=0 index=1 to_write=1024 wrote=2
       flush-8:0-2977  [007]  2466.711653: writeback_single_inode: bdi 8:0: ino=134218283 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=0 index=1 to_write=1024 wrote=2
       flush-8:0-2977  [007]  2466.711677: writeback_single_inode: bdi 8:0: ino=134218284 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=0 index=1 to_write=1024 wrote=2
       flush-8:0-2977  [007]  2466.711703: writeback_single_inode: bdi 8:0: ino=134218285 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=0 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.711726: writeback_single_inode: bdi 8:0: ino=134218286 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=0 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.711752: writeback_single_inode: bdi 8:0: ino=134218287 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=0 index=1 to_write=1024 wrote=2
       flush-8:0-2977  [007]  2466.711775: writeback_single_inode: bdi 8:0: ino=134218288 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=0 index=1 to_write=1024 wrote=2
       flush-8:0-2977  [007]  2466.711802: writeback_single_inode: bdi 8:0: ino=134218289 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=0 index=1 to_write=1024 wrote=2
       flush-8:0-2977  [007]  2466.711830: writeback_single_inode: bdi 8:0: ino=134218290 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=0 index=7 to_write=1024 wrote=8
       flush-8:0-2977  [007]  2466.711856: writeback_single_inode: bdi 8:0: ino=134218291 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=0 index=2 to_write=1024 wrote=3
       flush-8:0-2977  [007]  2466.711878: writeback_single_inode: bdi 8:0: ino=134218292 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=0 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.711909: writeback_single_inode: bdi 8:0: ino=134218293 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=0 index=5 to_write=1024 wrote=6
       flush-8:0-2977  [007]  2466.711933: writeback_single_inode: bdi 8:0: ino=268628653 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=0 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.711959: writeback_single_inode: bdi 8:0: ino=268628654 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=0 index=1 to_write=1024 wrote=2
       flush-8:0-2977  [007]  2466.711986: writeback_single_inode: bdi 8:0: ino=268628655 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=0 index=5 to_write=1024 wrote=6
       flush-8:0-2977  [007]  2466.712011: writeback_single_inode: bdi 8:0: ino=268628656 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=0 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.712034: writeback_single_inode: bdi 8:0: ino=268628657 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=0 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.712063: writeback_single_inode: bdi 8:0: ino=268628658 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=0 index=2 to_write=1024 wrote=3
       flush-8:0-2977  [007]  2466.712089: writeback_single_inode: bdi 8:0: ino=268628659 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=0 index=1 to_write=1024 wrote=2
       flush-8:0-2977  [007]  2466.712116: writeback_single_inode: bdi 8:0: ino=268628660 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=0 index=4 to_write=1024 wrote=5
       flush-8:0-2977  [007]  2466.712141: writeback_single_inode: bdi 8:0: ino=268628661 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=0 index=1 to_write=1024 wrote=2
       flush-8:0-2977  [007]  2466.712165: writeback_single_inode: bdi 8:0: ino=268628662 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=0 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.712188: writeback_single_inode: bdi 8:0: ino=268628663 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=0 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.712213: writeback_single_inode: bdi 8:0: ino=268628664 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=0 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.712240: writeback_single_inode: bdi 8:0: ino=402653458 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=0 index=5 to_write=1024 wrote=6
       flush-8:0-2977  [007]  2466.712267: writeback_single_inode: bdi 8:0: ino=402653459 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=0 index=4 to_write=1024 wrote=5
       flush-8:0-2977  [007]  2466.712293: writeback_single_inode: bdi 8:0: ino=402653460 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=0 index=4 to_write=1024 wrote=5
       flush-8:0-2977  [007]  2466.712323: writeback_single_inode: bdi 8:0: ino=402653461 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=0 index=7 to_write=1024 wrote=8
       flush-8:0-2977  [007]  2466.712348: writeback_single_inode: bdi 8:0: ino=402653462 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=0 index=3 to_write=1024 wrote=4
       flush-8:0-2977  [007]  2466.712373: writeback_single_inode: bdi 8:0: ino=402653463 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=0 index=1 to_write=1024 wrote=2
       flush-8:0-2977  [007]  2466.712398: writeback_single_inode: bdi 8:0: ino=268628665 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=0 index=1 to_write=1024 wrote=2
       flush-8:0-2977  [007]  2466.712422: writeback_single_inode: bdi 8:0: ino=268628666 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=0 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.712454: writeback_single_inode: bdi 8:0: ino=268628667 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=0 index=12 to_write=1024 wrote=13
       flush-8:0-2977  [007]  2466.712479: writeback_single_inode: bdi 8:0: ino=308 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=0 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.712505: writeback_single_inode: bdi 8:0: ino=309 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=0 index=5 to_write=1024 wrote=6
       flush-8:0-2977  [007]  2466.712534: writeback_single_inode: bdi 8:0: ino=310 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=0 index=3 to_write=1024 wrote=4
       flush-8:0-2977  [007]  2466.712565: writeback_single_inode: bdi 8:0: ino=311 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=0 index=2 to_write=1024 wrote=3
       flush-8:0-2977  [007]  2466.712591: writeback_single_inode: bdi 8:0: ino=268628668 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=0 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.712615: writeback_single_inode: bdi 8:0: ino=268628669 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=0 index=1 to_write=1024 wrote=2
       flush-8:0-2977  [007]  2466.712641: writeback_single_inode: bdi 8:0: ino=268628670 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=0 index=1 to_write=1024 wrote=2
       flush-8:0-2977  [007]  2466.712664: writeback_single_inode: bdi 8:0: ino=268628671 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=0 index=1 to_write=1024 wrote=2
       flush-8:0-2977  [007]  2466.712690: writeback_single_inode: bdi 8:0: ino=268628704 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=0 index=1 to_write=1024 wrote=2
       flush-8:0-2977  [007]  2466.712712: writeback_single_inode: bdi 8:0: ino=268628705 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=0 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.712738: writeback_single_inode: bdi 8:0: ino=268628706 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=0 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.712761: writeback_single_inode: bdi 8:0: ino=268628707 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=0 index=0 to_write=1024 wrote=1
       flush-8:0-2977  [007]  2466.712787: writeback_single_inode: bdi 8:0: ino=268628708 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=0 index=1 to_write=1024 wrote=2
       flush-8:0-2977  [007]  2466.712813: writeback_single_inode: bdi 8:0: ino=268628709 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=0 index=4 to_write=1024 wrote=5
       flush-8:0-2977  [007]  2466.712815: writeback_queue_io: bdi 8:0: older=4297111397 age=30000 enqueue=0
       flush-8:0-2977  [007]  2466.713555: writeback_single_inode: bdi 8:0: ino=131 state=I_DIRTY_SYNC|I_DIRTY_DATASYNC|I_DIRTY_PAGES age=340 index=1025 to_write=1024 wrote=1025
       flush-8:0-2977  [007]  2466.713557: writeback_queue_io: bdi 8:0: older=4297111398 age=30000 enqueue=0
       flush-8:0-2977  [007]  2466.714552: writeback_single_inode: bdi 8:0: ino=131 state=I_DIRTY_SYNC|I_DIRTY_DATASYNC|I_DIRTY_PAGES age=341 index=2050 to_write=1024 wrote=1025
       flush-8:0-2977  [007]  2466.714554: writeback_queue_io: bdi 8:0: older=4297111399 age=30000 enqueue=0
       flush-8:0-2977  [007]  2466.715291: writeback_single_inode: bdi 8:0: ino=131 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=341 index=3075 to_write=1024 wrote=1025
       flush-8:0-2977  [007]  2466.715293: writeback_queue_io: bdi 8:0: older=4297111399 age=30000 enqueue=0
       flush-8:0-2977  [007]  2466.716018: writeback_single_inode: bdi 8:0: ino=131 state=I_DIRTY_SYNC|I_DIRTY_DATASYNC|I_DIRTY_PAGES age=342 index=4100 to_write=1024 wrote=1025
       flush-8:0-2977  [007]  2466.721578: writeback_queue_io: bdi 8:0: older=4297111406 age=30000 enqueue=0
       flush-8:0-2977  [007]  2466.722297: writeback_single_inode: bdi 8:0: ino=131 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=348 index=5125 to_write=1024 wrote=1025
       flush-8:0-2977  [007]  2466.725970: writeback_queue_io: bdi 8:0: older=4297111410 age=30000 enqueue=0
       flush-8:0-2977  [007]  2466.726737: writeback_single_inode: bdi 8:0: ino=131 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=353 index=6150 to_write=1024 wrote=1025
       flush-8:0-2977  [007]  2466.730327: writeback_queue_io: bdi 8:0: older=4297111414 age=30000 enqueue=0
       flush-8:0-2977  [007]  2466.731099: writeback_single_inode: bdi 8:0: ino=131 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=357 index=7175 to_write=1024 wrote=1025
       flush-8:0-2977  [007]  2466.734709: writeback_queue_io: bdi 8:0: older=4297111419 age=30000 enqueue=0
       flush-8:0-2977  [007]  2466.735421: writeback_single_inode: bdi 8:0: ino=131 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=361 index=8200 to_write=1024 wrote=1025
       flush-8:0-2977  [007]  2466.739039: writeback_queue_io: bdi 8:0: older=4297111423 age=30000 enqueue=0
       flush-8:0-2977  [007]  2466.739770: writeback_single_inode: bdi 8:0: ino=131 state=I_DIRTY_SYNC|I_DIRTY_DATASYNC|I_DIRTY_PAGES age=366 index=9225 to_write=1024 wrote=1025
       flush-8:0-2977  [007]  2466.743339: writeback_queue_io: bdi 8:0: older=4297111427 age=30000 enqueue=0
       flush-8:0-2977  [007]  2466.744049: writeback_single_inode: bdi 8:0: ino=131 state=I_DIRTY_SYNC|I_DIRTY_DATASYNC|I_DIRTY_PAGES age=370 index=10250 to_write=1024 wrote=1025
       flush-8:0-2977  [007]  2466.747670: writeback_queue_io: bdi 8:0: older=4297111432 age=30000 enqueue=0
       flush-8:0-2977  [007]  2466.748370: writeback_single_inode: bdi 8:0: ino=131 state=I_DIRTY_SYNC|I_DIRTY_DATASYNC|I_DIRTY_PAGES age=374 index=11275 to_write=1024 wrote=1025
       flush-8:0-2977  [007]  2466.752009: writeback_queue_io: bdi 8:0: older=4297111436 age=30000 enqueue=0
       flush-8:0-2977  [007]  2466.752737: writeback_single_inode: bdi 8:0: ino=131 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=379 index=12300 to_write=1024 wrote=1025
       flush-8:0-2977  [007]  2466.756394: writeback_queue_io: bdi 8:0: older=4297111440 age=30000 enqueue=0
       flush-8:0-2977  [007]  2466.757136: writeback_single_inode: bdi 8:0: ino=131 state=I_DIRTY_SYNC|I_DIRTY_DATASYNC|I_DIRTY_PAGES age=383 index=13325 to_write=1024 wrote=1025
       flush-8:0-2977  [007]  2466.760922: writeback_queue_io: bdi 8:0: older=4297111445 age=30000 enqueue=0
       flush-8:0-2977  [007]  2466.761654: writeback_single_inode: bdi 8:0: ino=131 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=388 index=14350 to_write=1024 wrote=1025
       flush-8:0-2977  [007]  2466.761656: writeback_queue_io: bdi 8:0: older=4297111446 age=30000 enqueue=0
       flush-8:0-2977  [007]  2466.762334: writeback_single_inode: bdi 8:0: ino=131 state=I_DIRTY_SYNC|I_DIRTY_PAGES age=388 index=15375 to_write=1024 wrote=1025
       flush-8:0-2977  [007]  2466.769691: writeback_queue_io: bdi 8:0: older=4297111454 age=30000 enqueue=0
       flush-8:0-2977  [007]  2466.770444: writeback_single_inode: bdi 8:0: ino=131 state=I_DIRTY_SYNC|I_DIRTY_DATASYNC|I_DIRTY_PAGES age=397 index=16400 to_write=1024 wrote=1025
       flush-8:0-2977  [007]  2466.770446: writeback_queue_io: bdi 8:0: older=4297111455 age=30000 enqueue=0
##### CPU 2 buffer started ####
              dd-2975  [002]  2466.842539: writeback_single_inode: bdi 8:0: ino=131 state=I_DIRTY_SYNC|I_DIRTY_DATASYNC|I_DIRTY_PAGES|I_SYNC age=469 index=16400 to_write=1024 wrote=0
              dd-2975  [002]  2466.843244: writeback_queue_io: bdi 8:0: older=0 age=-1 enqueue=1008
              dd-2975  [002]  2466.843246: writeback_single_inode: bdi 8:0: ino=131 state=I_DIRTY_SYNC|I_DIRTY_DATASYNC|I_DIRTY_PAGES|I_SYNC age=470 index=16400 to_write=1024 wrote=0
              dd-2975  [002]  2466.843251: writeback_single_inode: bdi 8:0: ino=133 state=I_DIRTY_SYNC age=420 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.843254: writeback_single_inode: bdi 8:0: ino=134 state=I_DIRTY_SYNC age=420 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.843257: writeback_single_inode: bdi 8:0: ino=135 state=I_DIRTY_SYNC age=420 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.843260: writeback_single_inode: bdi 8:0: ino=136 state=I_DIRTY_SYNC age=419 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.843263: writeback_single_inode: bdi 8:0: ino=134217857 state=I_DIRTY_SYNC age=402 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.843266: writeback_single_inode: bdi 8:0: ino=134217858 state=I_DIRTY_SYNC age=402 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.843269: writeback_single_inode: bdi 8:0: ino=268628417 state=I_DIRTY_SYNC age=392 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.843272: writeback_single_inode: bdi 8:0: ino=402653313 state=I_DIRTY_SYNC age=379 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.843275: writeback_single_inode: bdi 8:0: ino=402653314 state=I_DIRTY_SYNC age=378 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.843278: writeback_single_inode: bdi 8:0: ino=402653315 state=I_DIRTY_SYNC age=378 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.843281: writeback_single_inode: bdi 8:0: ino=402653316 state=I_DIRTY_SYNC age=378 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.843284: writeback_single_inode: bdi 8:0: ino=138 state=I_DIRTY_SYNC age=378 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.843287: writeback_single_inode: bdi 8:0: ino=139 state=I_DIRTY_SYNC age=378 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.843290: writeback_single_inode: bdi 8:0: ino=140 state=I_DIRTY_SYNC age=378 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.843293: writeback_single_inode: bdi 8:0: ino=141 state=I_DIRTY_SYNC age=378 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.843296: writeback_single_inode: bdi 8:0: ino=134217860 state=I_DIRTY_SYNC age=378 index=0 to_write=1024 wrote=0
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              dd-2975  [002]  2466.843302: writeback_single_inode: bdi 8:0: ino=134217862 state=I_DIRTY_SYNC age=378 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.843305: writeback_single_inode: bdi 8:0: ino=134217863 state=I_DIRTY_SYNC age=378 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.843309: writeback_single_inode: bdi 8:0: ino=134217864 state=I_DIRTY_SYNC age=377 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.843311: writeback_single_inode: bdi 8:0: ino=134217865 state=I_DIRTY_SYNC age=377 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.843314: writeback_single_inode: bdi 8:0: ino=134217866 state=I_DIRTY_SYNC age=377 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.843317: writeback_single_inode: bdi 8:0: ino=134217867 state=I_DIRTY_SYNC age=377 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.843320: writeback_single_inode: bdi 8:0: ino=134217868 state=I_DIRTY_SYNC age=377 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.843323: writeback_single_inode: bdi 8:0: ino=134217869 state=I_DIRTY_SYNC age=377 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.843325: writeback_single_inode: bdi 8:0: ino=268628419 state=I_DIRTY_SYNC age=377 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.843328: writeback_single_inode: bdi 8:0: ino=268628420 state=I_DIRTY_SYNC age=377 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.843331: writeback_single_inode: bdi 8:0: ino=268628421 state=I_DIRTY_SYNC age=377 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.843334: writeback_single_inode: bdi 8:0: ino=268628422 state=I_DIRTY_SYNC age=377 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.843337: writeback_single_inode: bdi 8:0: ino=268628423 state=I_DIRTY_SYNC age=377 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.843340: writeback_single_inode: bdi 8:0: ino=268628424 state=I_DIRTY_SYNC age=377 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.843344: writeback_single_inode: bdi 8:0: ino=268628425 state=I_DIRTY_SYNC age=377 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.843346: writeback_single_inode: bdi 8:0: ino=268628426 state=I_DIRTY_SYNC age=376 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.843349: writeback_single_inode: bdi 8:0: ino=268628427 state=I_DIRTY_SYNC age=376 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.843352: writeback_single_inode: bdi 8:0: ino=268628428 state=I_DIRTY_SYNC age=376 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.843355: writeback_single_inode: bdi 8:0: ino=268628429 state=I_DIRTY_SYNC age=376 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.843358: writeback_single_inode: bdi 8:0: ino=268628430 state=I_DIRTY_SYNC age=376 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.843361: writeback_single_inode: bdi 8:0: ino=268628431 state=I_DIRTY_SYNC age=376 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.843364: writeback_single_inode: bdi 8:0: ino=268628432 state=I_DIRTY_SYNC age=376 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.843367: writeback_single_inode: bdi 8:0: ino=268628433 state=I_DIRTY_SYNC age=376 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.843370: writeback_single_inode: bdi 8:0: ino=268628434 state=I_DIRTY_SYNC age=376 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.843373: writeback_single_inode: bdi 8:0: ino=268628435 state=I_DIRTY_SYNC age=376 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.843376: writeback_single_inode: bdi 8:0: ino=268628436 state=I_DIRTY_SYNC age=376 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.843378: writeback_single_inode: bdi 8:0: ino=268628437 state=I_DIRTY_SYNC age=376 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.843381: writeback_single_inode: bdi 8:0: ino=268628438 state=I_DIRTY_SYNC age=376 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.843384: writeback_single_inode: bdi 8:0: ino=268628439 state=I_DIRTY_SYNC age=375 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.843386: writeback_single_inode: bdi 8:0: ino=268628440 state=I_DIRTY_SYNC age=375 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.843389: writeback_single_inode: bdi 8:0: ino=268628441 state=I_DIRTY_SYNC age=375 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.843391: writeback_single_inode: bdi 8:0: ino=268628442 state=I_DIRTY_SYNC age=375 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.843394: writeback_single_inode: bdi 8:0: ino=268628443 state=I_DIRTY_SYNC age=375 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.843397: writeback_single_inode: bdi 8:0: ino=268628444 state=I_DIRTY_SYNC age=375 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.843400: writeback_single_inode: bdi 8:0: ino=268628445 state=I_DIRTY_SYNC age=375 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.843403: writeback_single_inode: bdi 8:0: ino=268628446 state=I_DIRTY_SYNC age=375 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.843406: writeback_single_inode: bdi 8:0: ino=268628447 state=I_DIRTY_SYNC age=375 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.843409: writeback_single_inode: bdi 8:0: ino=268628448 state=I_DIRTY_SYNC age=375 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.843411: writeback_single_inode: bdi 8:0: ino=268628449 state=I_DIRTY_SYNC age=375 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.843414: writeback_single_inode: bdi 8:0: ino=268628450 state=I_DIRTY_SYNC age=375 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.843417: writeback_single_inode: bdi 8:0: ino=268628451 state=I_DIRTY_SYNC age=375 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.843420: writeback_single_inode: bdi 8:0: ino=268628452 state=I_DIRTY_SYNC age=374 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.843423: writeback_single_inode: bdi 8:0: ino=268628453 state=I_DIRTY_SYNC age=374 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.843426: writeback_single_inode: bdi 8:0: ino=268628454 state=I_DIRTY_SYNC age=374 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.843429: writeback_single_inode: bdi 8:0: ino=268628455 state=I_DIRTY_SYNC age=374 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.843431: writeback_single_inode: bdi 8:0: ino=268628456 state=I_DIRTY_SYNC age=374 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.843434: writeback_single_inode: bdi 8:0: ino=268628457 state=I_DIRTY_SYNC age=374 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.843437: writeback_single_inode: bdi 8:0: ino=268628458 state=I_DIRTY_SYNC age=374 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.843439: writeback_single_inode: bdi 8:0: ino=268628459 state=I_DIRTY_SYNC age=374 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.843442: writeback_single_inode: bdi 8:0: ino=268628460 state=I_DIRTY_SYNC age=374 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.843445: writeback_single_inode: bdi 8:0: ino=268628461 state=I_DIRTY_SYNC age=374 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.843447: writeback_single_inode: bdi 8:0: ino=268628462 state=I_DIRTY_SYNC age=374 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.843450: writeback_single_inode: bdi 8:0: ino=268628463 state=I_DIRTY_SYNC age=373 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.843452: writeback_single_inode: bdi 8:0: ino=268628464 state=I_DIRTY_SYNC age=373 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.843455: writeback_single_inode: bdi 8:0: ino=268628465 state=I_DIRTY_SYNC age=373 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.843457: writeback_single_inode: bdi 8:0: ino=268628466 state=I_DIRTY_SYNC age=373 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.843460: writeback_single_inode: bdi 8:0: ino=268628467 state=I_DIRTY_SYNC age=373 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.843462: writeback_single_inode: bdi 8:0: ino=268628468 state=I_DIRTY_SYNC age=373 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.843465: writeback_single_inode: bdi 8:0: ino=268628469 state=I_DIRTY_SYNC age=373 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.843468: writeback_single_inode: bdi 8:0: ino=268628470 state=I_DIRTY_SYNC age=373 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.843470: writeback_single_inode: bdi 8:0: ino=268628471 state=I_DIRTY_SYNC age=373 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.843473: writeback_single_inode: bdi 8:0: ino=268628472 state=I_DIRTY_SYNC age=373 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.843475: writeback_single_inode: bdi 8:0: ino=268628473 state=I_DIRTY_SYNC age=373 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.843478: writeback_single_inode: bdi 8:0: ino=268628474 state=I_DIRTY_SYNC age=373 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.843481: writeback_single_inode: bdi 8:0: ino=268628475 state=I_DIRTY_SYNC age=373 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.843484: writeback_single_inode: bdi 8:0: ino=268628476 state=I_DIRTY_SYNC age=372 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.843487: writeback_single_inode: bdi 8:0: ino=268628477 state=I_DIRTY_SYNC age=372 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.843490: writeback_single_inode: bdi 8:0: ino=268628478 state=I_DIRTY_SYNC age=372 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.843493: writeback_single_inode: bdi 8:0: ino=268628479 state=I_DIRTY_SYNC age=372 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.843496: writeback_single_inode: bdi 8:0: ino=268628480 state=I_DIRTY_SYNC age=372 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.843499: writeback_single_inode: bdi 8:0: ino=268628481 state=I_DIRTY_SYNC age=372 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.843502: writeback_single_inode: bdi 8:0: ino=268628482 state=I_DIRTY_SYNC age=372 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.843505: writeback_single_inode: bdi 8:0: ino=268628483 state=I_DIRTY_SYNC age=372 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.843508: writeback_single_inode: bdi 8:0: ino=268628484 state=I_DIRTY_SYNC age=371 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.843511: writeback_single_inode: bdi 8:0: ino=268628485 state=I_DIRTY_SYNC age=371 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.843514: writeback_single_inode: bdi 8:0: ino=134217870 state=I_DIRTY_SYNC age=371 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.843517: writeback_single_inode: bdi 8:0: ino=134217871 state=I_DIRTY_SYNC age=371 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.843520: writeback_single_inode: bdi 8:0: ino=134217872 state=I_DIRTY_SYNC age=371 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.843523: writeback_single_inode: bdi 8:0: ino=134217873 state=I_DIRTY_SYNC age=371 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.843526: writeback_single_inode: bdi 8:0: ino=134217874 state=I_DIRTY_SYNC age=371 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.843529: writeback_single_inode: bdi 8:0: ino=134217875 state=I_DIRTY_SYNC age=370 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.843532: writeback_single_inode: bdi 8:0: ino=134217876 state=I_DIRTY_SYNC age=370 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.843534: writeback_single_inode: bdi 8:0: ino=402653318 state=I_DIRTY_SYNC age=370 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.843537: writeback_single_inode: bdi 8:0: ino=402653319 state=I_DIRTY_SYNC age=370 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.843540: writeback_single_inode: bdi 8:0: ino=402653320 state=I_DIRTY_SYNC age=370 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.843542: writeback_single_inode: bdi 8:0: ino=402653321 state=I_DIRTY_SYNC age=369 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.843545: writeback_single_inode: bdi 8:0: ino=402653322 state=I_DIRTY_SYNC age=369 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.843548: writeback_single_inode: bdi 8:0: ino=402653323 state=I_DIRTY_SYNC age=369 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.843551: writeback_single_inode: bdi 8:0: ino=402653324 state=I_DIRTY_SYNC age=369 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.843554: writeback_single_inode: bdi 8:0: ino=402653325 state=I_DIRTY_SYNC age=369 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.843557: writeback_single_inode: bdi 8:0: ino=143 state=I_DIRTY_SYNC age=368 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.843560: writeback_single_inode: bdi 8:0: ino=144 state=I_DIRTY_SYNC age=368 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.843563: writeback_single_inode: bdi 8:0: ino=145 state=I_DIRTY_SYNC age=367 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.843566: writeback_single_inode: bdi 8:0: ino=146 state=I_DIRTY_SYNC age=367 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.843569: writeback_single_inode: bdi 8:0: ino=147 state=I_DIRTY_SYNC age=367 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.843572: writeback_single_inode: bdi 8:0: ino=148 state=I_DIRTY_SYNC age=367 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.843575: writeback_single_inode: bdi 8:0: ino=149 state=I_DIRTY_SYNC age=366 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.843578: writeback_single_inode: bdi 8:0: ino=150 state=I_DIRTY_SYNC age=366 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.843581: writeback_single_inode: bdi 8:0: ino=151 state=I_DIRTY_SYNC age=355 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.843584: writeback_single_inode: bdi 8:0: ino=152 state=I_DIRTY_SYNC age=355 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.843587: writeback_single_inode: bdi 8:0: ino=153 state=I_DIRTY_SYNC age=355 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.843590: writeback_single_inode: bdi 8:0: ino=154 state=I_DIRTY_SYNC age=354 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.843593: writeback_single_inode: bdi 8:0: ino=155 state=I_DIRTY_SYNC age=354 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.843596: writeback_single_inode: bdi 8:0: ino=156 state=I_DIRTY_SYNC age=353 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.843599: writeback_single_inode: bdi 8:0: ino=157 state=I_DIRTY_SYNC age=352 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.843602: writeback_single_inode: bdi 8:0: ino=402653326 state=I_DIRTY_SYNC age=351 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.843605: writeback_single_inode: bdi 8:0: ino=402653327 state=I_DIRTY_SYNC age=351 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.843608: writeback_single_inode: bdi 8:0: ino=402653328 state=I_DIRTY_SYNC age=330 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.843611: writeback_single_inode: bdi 8:0: ino=402653329 state=I_DIRTY_SYNC age=330 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.843614: writeback_single_inode: bdi 8:0: ino=402653330 state=I_DIRTY_SYNC age=330 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.843617: writeback_single_inode: bdi 8:0: ino=402653331 state=I_DIRTY_SYNC age=329 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.843620: writeback_single_inode: bdi 8:0: ino=402653332 state=I_DIRTY_SYNC age=328 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.843623: writeback_single_inode: bdi 8:0: ino=402653333 state=I_DIRTY_SYNC age=327 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.843627: writeback_single_inode: bdi 8:0: ino=402653334 state=I_DIRTY_SYNC age=326 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.843630: writeback_single_inode: bdi 8:0: ino=402653335 state=I_DIRTY_SYNC age=326 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.843633: writeback_single_inode: bdi 8:0: ino=402653336 state=I_DIRTY_SYNC age=326 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.843636: writeback_single_inode: bdi 8:0: ino=402653337 state=I_DIRTY_SYNC age=326 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.843639: writeback_single_inode: bdi 8:0: ino=402653338 state=I_DIRTY_SYNC age=326 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.843642: writeback_single_inode: bdi 8:0: ino=402653339 state=I_DIRTY_SYNC age=325 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.843645: writeback_single_inode: bdi 8:0: ino=402653340 state=I_DIRTY_SYNC age=325 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.843648: writeback_single_inode: bdi 8:0: ino=402653341 state=I_DIRTY_SYNC age=325 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.843651: writeback_single_inode: bdi 8:0: ino=402653342 state=I_DIRTY_SYNC age=324 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.843654: writeback_single_inode: bdi 8:0: ino=402653343 state=I_DIRTY_SYNC age=324 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.843657: writeback_single_inode: bdi 8:0: ino=402653344 state=I_DIRTY_SYNC age=324 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.843660: writeback_single_inode: bdi 8:0: ino=402653345 state=I_DIRTY_SYNC age=324 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.843663: writeback_single_inode: bdi 8:0: ino=402653346 state=I_DIRTY_SYNC age=324 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.843666: writeback_single_inode: bdi 8:0: ino=402653347 state=I_DIRTY_SYNC age=324 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.843669: writeback_single_inode: bdi 8:0: ino=402653348 state=I_DIRTY_SYNC age=324 index=0 to_write=1024 wrote=0
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              dd-2975  [002]  2466.843677: writeback_single_inode: bdi 8:0: ino=134217878 state=I_DIRTY_SYNC age=322 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.843680: writeback_single_inode: bdi 8:0: ino=134217879 state=I_DIRTY_SYNC age=322 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.843683: writeback_single_inode: bdi 8:0: ino=134217880 state=I_DIRTY_SYNC age=322 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.843686: writeback_single_inode: bdi 8:0: ino=134217881 state=I_DIRTY_SYNC age=322 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.843688: writeback_single_inode: bdi 8:0: ino=134217882 state=I_DIRTY_SYNC age=321 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.843691: writeback_single_inode: bdi 8:0: ino=134217883 state=I_DIRTY_SYNC age=319 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.843694: writeback_single_inode: bdi 8:0: ino=134217884 state=I_DIRTY_SYNC age=318 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.843697: writeback_single_inode: bdi 8:0: ino=134217885 state=I_DIRTY_SYNC age=318 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.843699: writeback_single_inode: bdi 8:0: ino=134217886 state=I_DIRTY_SYNC age=317 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.843702: writeback_single_inode: bdi 8:0: ino=134217887 state=I_DIRTY_SYNC age=317 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.843705: writeback_single_inode: bdi 8:0: ino=134217888 state=I_DIRTY_SYNC age=317 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.843707: writeback_single_inode: bdi 8:0: ino=134217889 state=I_DIRTY_SYNC age=317 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.843710: writeback_single_inode: bdi 8:0: ino=134217890 state=I_DIRTY_SYNC age=317 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.843713: writeback_single_inode: bdi 8:0: ino=134217891 state=I_DIRTY_SYNC age=317 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.843715: writeback_single_inode: bdi 8:0: ino=134217892 state=I_DIRTY_SYNC age=317 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.843718: writeback_single_inode: bdi 8:0: ino=134217893 state=I_DIRTY_SYNC age=317 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.843721: writeback_single_inode: bdi 8:0: ino=134217894 state=I_DIRTY_SYNC age=317 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.843723: writeback_single_inode: bdi 8:0: ino=134217895 state=I_DIRTY_SYNC age=316 index=0 to_write=1024 wrote=0
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              dd-2975  [002]  2466.843734: writeback_single_inode: bdi 8:0: ino=134217899 state=I_DIRTY_SYNC age=315 index=0 to_write=1024 wrote=0
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              dd-2975  [002]  2466.843787: writeback_single_inode: bdi 8:0: ino=134217917 state=I_DIRTY_SYNC age=296 index=0 to_write=1024 wrote=0
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              dd-2975  [002]  2466.843803: writeback_single_inode: bdi 8:0: ino=134217987 state=I_DIRTY_SYNC age=295 index=0 to_write=1024 wrote=0
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              dd-2975  [002]  2466.843808: writeback_single_inode: bdi 8:0: ino=134217989 state=I_DIRTY_SYNC age=295 index=0 to_write=1024 wrote=0
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              dd-2975  [002]  2466.843834: writeback_single_inode: bdi 8:0: ino=134217998 state=I_DIRTY_SYNC age=294 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.843837: writeback_single_inode: bdi 8:0: ino=134217999 state=I_DIRTY_SYNC age=294 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.843840: writeback_single_inode: bdi 8:0: ino=134218000 state=I_DIRTY_SYNC age=294 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.843843: writeback_single_inode: bdi 8:0: ino=134218001 state=I_DIRTY_SYNC age=294 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.843846: writeback_single_inode: bdi 8:0: ino=134218002 state=I_DIRTY_SYNC age=294 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.843849: writeback_single_inode: bdi 8:0: ino=134218003 state=I_DIRTY_SYNC age=294 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.843851: writeback_single_inode: bdi 8:0: ino=134218004 state=I_DIRTY_SYNC age=293 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.843854: writeback_single_inode: bdi 8:0: ino=134218005 state=I_DIRTY_SYNC age=293 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.843857: writeback_single_inode: bdi 8:0: ino=134218006 state=I_DIRTY_SYNC age=293 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.843860: writeback_single_inode: bdi 8:0: ino=134218007 state=I_DIRTY_SYNC age=293 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.843862: writeback_single_inode: bdi 8:0: ino=134218008 state=I_DIRTY_SYNC age=293 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.843865: writeback_single_inode: bdi 8:0: ino=134218009 state=I_DIRTY_SYNC age=293 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.843867: writeback_single_inode: bdi 8:0: ino=134218010 state=I_DIRTY_SYNC age=292 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.843870: writeback_single_inode: bdi 8:0: ino=134218011 state=I_DIRTY_SYNC age=292 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.843873: writeback_single_inode: bdi 8:0: ino=134218012 state=I_DIRTY_SYNC age=292 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.843876: writeback_single_inode: bdi 8:0: ino=134218013 state=I_DIRTY_SYNC age=292 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.843879: writeback_single_inode: bdi 8:0: ino=134218014 state=I_DIRTY_SYNC age=291 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.843882: writeback_single_inode: bdi 8:0: ino=134218015 state=I_DIRTY_SYNC age=291 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.843885: writeback_single_inode: bdi 8:0: ino=134218016 state=I_DIRTY_SYNC age=291 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.843888: writeback_single_inode: bdi 8:0: ino=134218017 state=I_DIRTY_SYNC age=291 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.843891: writeback_single_inode: bdi 8:0: ino=134218018 state=I_DIRTY_SYNC age=290 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.843894: writeback_single_inode: bdi 8:0: ino=134218019 state=I_DIRTY_SYNC age=290 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.843897: writeback_single_inode: bdi 8:0: ino=134218020 state=I_DIRTY_SYNC age=290 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.843900: writeback_single_inode: bdi 8:0: ino=134218021 state=I_DIRTY_SYNC age=290 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.843904: writeback_single_inode: bdi 8:0: ino=134218022 state=I_DIRTY_SYNC age=290 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.843906: writeback_single_inode: bdi 8:0: ino=134218023 state=I_DIRTY_SYNC age=289 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.843909: writeback_single_inode: bdi 8:0: ino=134218024 state=I_DIRTY_SYNC age=289 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.843912: writeback_single_inode: bdi 8:0: ino=134218025 state=I_DIRTY_SYNC age=289 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.843915: writeback_single_inode: bdi 8:0: ino=134218026 state=I_DIRTY_SYNC age=289 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.843918: writeback_single_inode: bdi 8:0: ino=134218027 state=I_DIRTY_SYNC age=289 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.843921: writeback_single_inode: bdi 8:0: ino=134218028 state=I_DIRTY_SYNC age=289 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.843924: writeback_single_inode: bdi 8:0: ino=134218029 state=I_DIRTY_SYNC age=289 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.843928: writeback_single_inode: bdi 8:0: ino=134218030 state=I_DIRTY_SYNC age=289 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.843931: writeback_single_inode: bdi 8:0: ino=134218031 state=I_DIRTY_SYNC age=289 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.843934: writeback_single_inode: bdi 8:0: ino=134218032 state=I_DIRTY_SYNC age=288 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.843937: writeback_single_inode: bdi 8:0: ino=134218033 state=I_DIRTY_SYNC age=288 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.843940: writeback_single_inode: bdi 8:0: ino=134218034 state=I_DIRTY_SYNC age=288 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.843943: writeback_single_inode: bdi 8:0: ino=134218035 state=I_DIRTY_SYNC age=288 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.843946: writeback_single_inode: bdi 8:0: ino=134218036 state=I_DIRTY_SYNC age=288 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.843949: writeback_single_inode: bdi 8:0: ino=134218037 state=I_DIRTY_SYNC age=287 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.843952: writeback_single_inode: bdi 8:0: ino=134218038 state=I_DIRTY_SYNC age=287 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.843955: writeback_single_inode: bdi 8:0: ino=134218039 state=I_DIRTY_SYNC age=287 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.843958: writeback_single_inode: bdi 8:0: ino=134218040 state=I_DIRTY_SYNC age=287 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.843961: writeback_single_inode: bdi 8:0: ino=134218041 state=I_DIRTY_SYNC age=287 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.843964: writeback_single_inode: bdi 8:0: ino=134218042 state=I_DIRTY_SYNC age=287 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.843967: writeback_single_inode: bdi 8:0: ino=134218043 state=I_DIRTY_SYNC age=287 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.843970: writeback_single_inode: bdi 8:0: ino=134218044 state=I_DIRTY_SYNC age=287 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.843973: writeback_single_inode: bdi 8:0: ino=134218045 state=I_DIRTY_SYNC age=287 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.843976: writeback_single_inode: bdi 8:0: ino=134218046 state=I_DIRTY_SYNC age=286 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.843979: writeback_single_inode: bdi 8:0: ino=134218047 state=I_DIRTY_SYNC age=286 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.843981: writeback_single_inode: bdi 8:0: ino=134218048 state=I_DIRTY_SYNC age=286 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.843984: writeback_single_inode: bdi 8:0: ino=134218049 state=I_DIRTY_SYNC age=286 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.843986: writeback_single_inode: bdi 8:0: ino=134218050 state=I_DIRTY_SYNC age=286 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.843989: writeback_single_inode: bdi 8:0: ino=134218051 state=I_DIRTY_SYNC age=286 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.843991: writeback_single_inode: bdi 8:0: ino=134218052 state=I_DIRTY_SYNC age=286 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.843994: writeback_single_inode: bdi 8:0: ino=134218053 state=I_DIRTY_SYNC age=286 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.843997: writeback_single_inode: bdi 8:0: ino=134218054 state=I_DIRTY_SYNC age=285 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.843999: writeback_single_inode: bdi 8:0: ino=134218055 state=I_DIRTY_SYNC age=285 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844002: writeback_single_inode: bdi 8:0: ino=134218056 state=I_DIRTY_SYNC age=285 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844005: writeback_single_inode: bdi 8:0: ino=134218057 state=I_DIRTY_SYNC age=285 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844007: writeback_single_inode: bdi 8:0: ino=134218058 state=I_DIRTY_SYNC age=285 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844010: writeback_single_inode: bdi 8:0: ino=134218059 state=I_DIRTY_SYNC age=285 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844012: writeback_single_inode: bdi 8:0: ino=402653351 state=I_DIRTY_SYNC age=285 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844015: writeback_single_inode: bdi 8:0: ino=402653352 state=I_DIRTY_SYNC age=259 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844018: writeback_single_inode: bdi 8:0: ino=402653353 state=I_DIRTY_SYNC age=258 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844020: writeback_single_inode: bdi 8:0: ino=134218060 state=I_DIRTY_SYNC age=258 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844023: writeback_single_inode: bdi 8:0: ino=134218061 state=I_DIRTY_SYNC age=257 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844026: writeback_single_inode: bdi 8:0: ino=134218062 state=I_DIRTY_SYNC age=257 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844028: writeback_single_inode: bdi 8:0: ino=134218063 state=I_DIRTY_SYNC age=257 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844031: writeback_single_inode: bdi 8:0: ino=134218064 state=I_DIRTY_SYNC age=257 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844034: writeback_single_inode: bdi 8:0: ino=134218065 state=I_DIRTY_SYNC age=257 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844036: writeback_single_inode: bdi 8:0: ino=134218066 state=I_DIRTY_SYNC age=256 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844039: writeback_single_inode: bdi 8:0: ino=268628487 state=I_DIRTY_SYNC age=256 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844042: writeback_single_inode: bdi 8:0: ino=268628488 state=I_DIRTY_SYNC age=256 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844044: writeback_single_inode: bdi 8:0: ino=268628489 state=I_DIRTY_SYNC age=256 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844047: writeback_single_inode: bdi 8:0: ino=268628490 state=I_DIRTY_SYNC age=256 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844050: writeback_single_inode: bdi 8:0: ino=268628491 state=I_DIRTY_SYNC age=255 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844052: writeback_single_inode: bdi 8:0: ino=268628492 state=I_DIRTY_SYNC age=255 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844055: writeback_single_inode: bdi 8:0: ino=268628493 state=I_DIRTY_SYNC age=255 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844058: writeback_single_inode: bdi 8:0: ino=402653355 state=I_DIRTY_SYNC age=254 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844060: writeback_single_inode: bdi 8:0: ino=402653356 state=I_DIRTY_SYNC age=254 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844063: writeback_single_inode: bdi 8:0: ino=402653357 state=I_DIRTY_SYNC age=254 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844066: writeback_single_inode: bdi 8:0: ino=402653358 state=I_DIRTY_SYNC age=254 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844068: writeback_single_inode: bdi 8:0: ino=402653359 state=I_DIRTY_SYNC age=254 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844071: writeback_single_inode: bdi 8:0: ino=402653360 state=I_DIRTY_SYNC age=253 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844073: writeback_single_inode: bdi 8:0: ino=402653361 state=I_DIRTY_SYNC age=253 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844076: writeback_single_inode: bdi 8:0: ino=402653362 state=I_DIRTY_SYNC age=253 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844079: writeback_single_inode: bdi 8:0: ino=402653363 state=I_DIRTY_SYNC age=253 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844081: writeback_single_inode: bdi 8:0: ino=402653364 state=I_DIRTY_SYNC age=253 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844084: writeback_single_inode: bdi 8:0: ino=402653365 state=I_DIRTY_SYNC age=252 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844086: writeback_single_inode: bdi 8:0: ino=402653366 state=I_DIRTY_SYNC age=252 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844089: writeback_single_inode: bdi 8:0: ino=402653367 state=I_DIRTY_SYNC age=252 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844092: writeback_single_inode: bdi 8:0: ino=402653368 state=I_DIRTY_SYNC age=252 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844095: writeback_single_inode: bdi 8:0: ino=402653369 state=I_DIRTY_SYNC age=252 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844097: writeback_single_inode: bdi 8:0: ino=402653370 state=I_DIRTY_SYNC age=251 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844100: writeback_single_inode: bdi 8:0: ino=134218067 state=I_DIRTY_SYNC age=251 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844102: writeback_single_inode: bdi 8:0: ino=134218068 state=I_DIRTY_SYNC age=251 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844105: writeback_single_inode: bdi 8:0: ino=134218069 state=I_DIRTY_SYNC age=251 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844107: writeback_single_inode: bdi 8:0: ino=134218070 state=I_DIRTY_SYNC age=250 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844110: writeback_single_inode: bdi 8:0: ino=134218071 state=I_DIRTY_SYNC age=250 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844113: writeback_single_inode: bdi 8:0: ino=134218072 state=I_DIRTY_SYNC age=250 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844116: writeback_single_inode: bdi 8:0: ino=134218073 state=I_DIRTY_SYNC age=250 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844118: writeback_single_inode: bdi 8:0: ino=134218074 state=I_DIRTY_SYNC age=250 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844121: writeback_single_inode: bdi 8:0: ino=134218075 state=I_DIRTY_SYNC age=249 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844124: writeback_single_inode: bdi 8:0: ino=159 state=I_DIRTY_SYNC age=249 index=0 to_write=1024 wrote=0
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              dd-2975  [002]  2466.844129: writeback_single_inode: bdi 8:0: ino=161 state=I_DIRTY_SYNC age=248 index=0 to_write=1024 wrote=0
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              dd-2975  [002]  2466.844148: writeback_single_inode: bdi 8:0: ino=268628495 state=I_DIRTY_SYNC age=249 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844151: writeback_single_inode: bdi 8:0: ino=268628496 state=I_DIRTY_SYNC age=249 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844154: writeback_single_inode: bdi 8:0: ino=134218077 state=I_DIRTY_SYNC age=249 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844157: writeback_single_inode: bdi 8:0: ino=134218078 state=I_DIRTY_SYNC age=249 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844160: writeback_single_inode: bdi 8:0: ino=134218079 state=I_DIRTY_SYNC age=249 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844163: writeback_single_inode: bdi 8:0: ino=134218080 state=I_DIRTY_SYNC age=249 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844166: writeback_single_inode: bdi 8:0: ino=402653372 state=I_DIRTY_SYNC age=248 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844169: writeback_single_inode: bdi 8:0: ino=402653373 state=I_DIRTY_SYNC age=248 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844172: writeback_single_inode: bdi 8:0: ino=402653374 state=I_DIRTY_SYNC age=248 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844174: writeback_single_inode: bdi 8:0: ino=402653375 state=I_DIRTY_SYNC age=248 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844177: writeback_single_inode: bdi 8:0: ino=402653408 state=I_DIRTY_SYNC age=248 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844180: writeback_single_inode: bdi 8:0: ino=402653409 state=I_DIRTY_SYNC age=248 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844183: writeback_single_inode: bdi 8:0: ino=402653410 state=I_DIRTY_SYNC age=248 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844186: writeback_single_inode: bdi 8:0: ino=402653411 state=I_DIRTY_SYNC age=248 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844188: writeback_single_inode: bdi 8:0: ino=134218081 state=I_DIRTY_SYNC age=248 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844192: writeback_single_inode: bdi 8:0: ino=134218082 state=I_DIRTY_SYNC age=248 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844195: writeback_single_inode: bdi 8:0: ino=167 state=I_DIRTY_SYNC age=248 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844198: writeback_single_inode: bdi 8:0: ino=168 state=I_DIRTY_SYNC age=248 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844201: writeback_single_inode: bdi 8:0: ino=169 state=I_DIRTY_SYNC age=248 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844204: writeback_single_inode: bdi 8:0: ino=170 state=I_DIRTY_SYNC age=247 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844207: writeback_single_inode: bdi 8:0: ino=171 state=I_DIRTY_SYNC age=247 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844210: writeback_single_inode: bdi 8:0: ino=172 state=I_DIRTY_SYNC age=247 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844213: writeback_single_inode: bdi 8:0: ino=134218084 state=I_DIRTY_SYNC age=247 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844216: writeback_single_inode: bdi 8:0: ino=134218085 state=I_DIRTY_SYNC age=247 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844219: writeback_single_inode: bdi 8:0: ino=173 state=I_DIRTY_SYNC age=247 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844222: writeback_single_inode: bdi 8:0: ino=174 state=I_DIRTY_SYNC age=247 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844225: writeback_single_inode: bdi 8:0: ino=268628498 state=I_DIRTY_SYNC age=247 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844228: writeback_single_inode: bdi 8:0: ino=268628499 state=I_DIRTY_SYNC age=247 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844231: writeback_single_inode: bdi 8:0: ino=268628500 state=I_DIRTY_SYNC age=247 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844234: writeback_single_inode: bdi 8:0: ino=268628501 state=I_DIRTY_SYNC age=246 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844237: writeback_single_inode: bdi 8:0: ino=268628502 state=I_DIRTY_SYNC age=246 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844240: writeback_single_inode: bdi 8:0: ino=268628503 state=I_DIRTY_SYNC age=246 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844243: writeback_single_inode: bdi 8:0: ino=268628504 state=I_DIRTY_SYNC age=246 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844246: writeback_single_inode: bdi 8:0: ino=268628505 state=I_DIRTY_SYNC age=246 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844249: writeback_single_inode: bdi 8:0: ino=268628506 state=I_DIRTY_SYNC age=246 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844252: writeback_single_inode: bdi 8:0: ino=268628507 state=I_DIRTY_SYNC age=246 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844254: writeback_single_inode: bdi 8:0: ino=268628508 state=I_DIRTY_SYNC age=246 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844257: writeback_single_inode: bdi 8:0: ino=268628509 state=I_DIRTY_SYNC age=246 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844260: writeback_single_inode: bdi 8:0: ino=268628510 state=I_DIRTY_SYNC age=246 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844263: writeback_single_inode: bdi 8:0: ino=268628511 state=I_DIRTY_SYNC age=246 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844266: writeback_single_inode: bdi 8:0: ino=268628512 state=I_DIRTY_SYNC age=246 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844269: writeback_single_inode: bdi 8:0: ino=268628513 state=I_DIRTY_SYNC age=246 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844272: writeback_single_inode: bdi 8:0: ino=268628514 state=I_DIRTY_SYNC age=246 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844275: writeback_single_inode: bdi 8:0: ino=268628515 state=I_DIRTY_SYNC age=245 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844278: writeback_single_inode: bdi 8:0: ino=402653413 state=I_DIRTY_SYNC age=245 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844281: writeback_single_inode: bdi 8:0: ino=176 state=I_DIRTY_SYNC age=245 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844284: writeback_single_inode: bdi 8:0: ino=177 state=I_DIRTY_SYNC age=245 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844286: writeback_single_inode: bdi 8:0: ino=178 state=I_DIRTY_SYNC age=245 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844289: writeback_single_inode: bdi 8:0: ino=179 state=I_DIRTY_SYNC age=245 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844292: writeback_single_inode: bdi 8:0: ino=180 state=I_DIRTY_SYNC age=245 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844295: writeback_single_inode: bdi 8:0: ino=181 state=I_DIRTY_SYNC age=245 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844298: writeback_single_inode: bdi 8:0: ino=182 state=I_DIRTY_SYNC age=245 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844300: writeback_single_inode: bdi 8:0: ino=183 state=I_DIRTY_SYNC age=245 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844303: writeback_single_inode: bdi 8:0: ino=184 state=I_DIRTY_SYNC age=245 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844305: writeback_single_inode: bdi 8:0: ino=185 state=I_DIRTY_SYNC age=245 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844308: writeback_single_inode: bdi 8:0: ino=186 state=I_DIRTY_SYNC age=244 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844310: writeback_single_inode: bdi 8:0: ino=187 state=I_DIRTY_SYNC age=244 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844313: writeback_single_inode: bdi 8:0: ino=134218087 state=I_DIRTY_SYNC age=244 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844315: writeback_single_inode: bdi 8:0: ino=134218088 state=I_DIRTY_SYNC age=244 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844318: writeback_single_inode: bdi 8:0: ino=134218089 state=I_DIRTY_SYNC age=244 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844320: writeback_single_inode: bdi 8:0: ino=188 state=I_DIRTY_SYNC age=244 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844323: writeback_single_inode: bdi 8:0: ino=268628517 state=I_DIRTY_SYNC age=244 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844325: writeback_single_inode: bdi 8:0: ino=268628518 state=I_DIRTY_SYNC age=244 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844328: writeback_single_inode: bdi 8:0: ino=268628519 state=I_DIRTY_SYNC age=244 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844330: writeback_single_inode: bdi 8:0: ino=268628520 state=I_DIRTY_SYNC age=244 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844333: writeback_single_inode: bdi 8:0: ino=268628521 state=I_DIRTY_SYNC age=244 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844335: writeback_single_inode: bdi 8:0: ino=268628522 state=I_DIRTY_SYNC age=244 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844338: writeback_single_inode: bdi 8:0: ino=268628523 state=I_DIRTY_SYNC age=244 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844340: writeback_single_inode: bdi 8:0: ino=268628524 state=I_DIRTY_SYNC age=243 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844342: writeback_single_inode: bdi 8:0: ino=268628525 state=I_DIRTY_SYNC age=243 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844345: writeback_single_inode: bdi 8:0: ino=402653415 state=I_DIRTY_SYNC age=243 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844348: writeback_single_inode: bdi 8:0: ino=189 state=I_DIRTY_SYNC age=243 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844350: writeback_single_inode: bdi 8:0: ino=190 state=I_DIRTY_SYNC age=243 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844353: writeback_single_inode: bdi 8:0: ino=256 state=I_DIRTY_SYNC age=243 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844356: writeback_single_inode: bdi 8:0: ino=134218091 state=I_DIRTY_SYNC age=243 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844358: writeback_single_inode: bdi 8:0: ino=134218092 state=I_DIRTY_SYNC age=243 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844361: writeback_single_inode: bdi 8:0: ino=134218093 state=I_DIRTY_SYNC age=243 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844363: writeback_single_inode: bdi 8:0: ino=134218094 state=I_DIRTY_SYNC age=243 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844366: writeback_single_inode: bdi 8:0: ino=268628527 state=I_DIRTY_SYNC age=242 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844369: writeback_single_inode: bdi 8:0: ino=257 state=I_DIRTY_SYNC age=242 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844371: writeback_single_inode: bdi 8:0: ino=258 state=I_DIRTY_SYNC age=242 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844374: writeback_single_inode: bdi 8:0: ino=134218095 state=I_DIRTY_SYNC age=242 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844377: writeback_single_inode: bdi 8:0: ino=402653417 state=I_DIRTY_SYNC age=242 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844379: writeback_single_inode: bdi 8:0: ino=402653418 state=I_DIRTY_SYNC age=242 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844382: writeback_single_inode: bdi 8:0: ino=402653419 state=I_DIRTY_SYNC age=242 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844384: writeback_single_inode: bdi 8:0: ino=402653420 state=I_DIRTY_SYNC age=242 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844387: writeback_single_inode: bdi 8:0: ino=402653421 state=I_DIRTY_SYNC age=242 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844389: writeback_single_inode: bdi 8:0: ino=134218096 state=I_DIRTY_SYNC age=242 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844392: writeback_single_inode: bdi 8:0: ino=134218097 state=I_DIRTY_SYNC age=242 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844394: writeback_single_inode: bdi 8:0: ino=134218098 state=I_DIRTY_SYNC age=242 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844397: writeback_single_inode: bdi 8:0: ino=260 state=I_DIRTY_SYNC age=241 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844400: writeback_single_inode: bdi 8:0: ino=261 state=I_DIRTY_SYNC age=241 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844402: writeback_single_inode: bdi 8:0: ino=262 state=I_DIRTY_SYNC age=241 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844405: writeback_single_inode: bdi 8:0: ino=263 state=I_DIRTY_SYNC age=241 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844407: writeback_single_inode: bdi 8:0: ino=264 state=I_DIRTY_SYNC age=241 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844409: writeback_single_inode: bdi 8:0: ino=134218100 state=I_DIRTY_SYNC age=241 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844412: writeback_single_inode: bdi 8:0: ino=134218101 state=I_DIRTY_SYNC age=241 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844415: writeback_single_inode: bdi 8:0: ino=134218102 state=I_DIRTY_SYNC age=241 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844417: writeback_single_inode: bdi 8:0: ino=134218103 state=I_DIRTY_SYNC age=241 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844420: writeback_single_inode: bdi 8:0: ino=134218104 state=I_DIRTY_SYNC age=240 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844423: writeback_single_inode: bdi 8:0: ino=134218105 state=I_DIRTY_SYNC age=240 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844425: writeback_single_inode: bdi 8:0: ino=134218106 state=I_DIRTY_SYNC age=240 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844428: writeback_single_inode: bdi 8:0: ino=134218107 state=I_DIRTY_SYNC age=240 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844430: writeback_single_inode: bdi 8:0: ino=134218108 state=I_DIRTY_SYNC age=240 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844433: writeback_single_inode: bdi 8:0: ino=134218109 state=I_DIRTY_SYNC age=218 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844436: writeback_single_inode: bdi 8:0: ino=134218110 state=I_DIRTY_SYNC age=218 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844438: writeback_single_inode: bdi 8:0: ino=134218111 state=I_DIRTY_SYNC age=217 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844441: writeback_single_inode: bdi 8:0: ino=268628529 state=I_DIRTY_SYNC age=217 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844444: writeback_single_inode: bdi 8:0: ino=268628530 state=I_DIRTY_SYNC age=217 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844446: writeback_single_inode: bdi 8:0: ino=268628531 state=I_DIRTY_SYNC age=217 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844449: writeback_single_inode: bdi 8:0: ino=268628532 state=I_DIRTY_SYNC age=217 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844452: writeback_single_inode: bdi 8:0: ino=402653423 state=I_DIRTY_SYNC age=217 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844454: writeback_single_inode: bdi 8:0: ino=402653424 state=I_DIRTY_SYNC age=217 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844457: writeback_single_inode: bdi 8:0: ino=402653425 state=I_DIRTY_SYNC age=216 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844460: writeback_single_inode: bdi 8:0: ino=402653426 state=I_DIRTY_SYNC age=216 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844462: writeback_single_inode: bdi 8:0: ino=402653427 state=I_DIRTY_SYNC age=216 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844464: writeback_single_inode: bdi 8:0: ino=402653428 state=I_DIRTY_SYNC age=216 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844467: writeback_single_inode: bdi 8:0: ino=402653429 state=I_DIRTY_SYNC age=216 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844470: writeback_single_inode: bdi 8:0: ino=268628533 state=I_DIRTY_SYNC age=216 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844472: writeback_single_inode: bdi 8:0: ino=268628534 state=I_DIRTY_SYNC age=216 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844475: writeback_single_inode: bdi 8:0: ino=268628535 state=I_DIRTY_SYNC age=216 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844477: writeback_single_inode: bdi 8:0: ino=268628536 state=I_DIRTY_SYNC age=216 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844480: writeback_single_inode: bdi 8:0: ino=268628537 state=I_DIRTY_SYNC age=215 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844483: writeback_single_inode: bdi 8:0: ino=134218144 state=I_DIRTY_SYNC age=215 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844486: writeback_single_inode: bdi 8:0: ino=134218145 state=I_DIRTY_SYNC age=215 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844489: writeback_single_inode: bdi 8:0: ino=134218146 state=I_DIRTY_SYNC age=215 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844492: writeback_single_inode: bdi 8:0: ino=134218147 state=I_DIRTY_SYNC age=215 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844495: writeback_single_inode: bdi 8:0: ino=134218148 state=I_DIRTY_SYNC age=215 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844498: writeback_single_inode: bdi 8:0: ino=266 state=I_DIRTY_SYNC age=215 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844501: writeback_single_inode: bdi 8:0: ino=267 state=I_DIRTY_SYNC age=215 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844504: writeback_single_inode: bdi 8:0: ino=268 state=I_DIRTY_SYNC age=215 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844507: writeback_single_inode: bdi 8:0: ino=269 state=I_DIRTY_SYNC age=214 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844510: writeback_single_inode: bdi 8:0: ino=270 state=I_DIRTY_SYNC age=213 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844513: writeback_single_inode: bdi 8:0: ino=134218150 state=I_DIRTY_SYNC age=213 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844516: writeback_single_inode: bdi 8:0: ino=134218151 state=I_DIRTY_SYNC age=213 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844518: writeback_single_inode: bdi 8:0: ino=134218152 state=I_DIRTY_SYNC age=213 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844521: writeback_single_inode: bdi 8:0: ino=134218153 state=I_DIRTY_SYNC age=212 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844524: writeback_single_inode: bdi 8:0: ino=134218154 state=I_DIRTY_SYNC age=212 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844526: writeback_single_inode: bdi 8:0: ino=134218155 state=I_DIRTY_SYNC age=212 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844529: writeback_single_inode: bdi 8:0: ino=134218156 state=I_DIRTY_SYNC age=211 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844532: writeback_single_inode: bdi 8:0: ino=134218157 state=I_DIRTY_SYNC age=211 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844534: writeback_single_inode: bdi 8:0: ino=134218158 state=I_DIRTY_SYNC age=211 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844537: writeback_single_inode: bdi 8:0: ino=134218159 state=I_DIRTY_SYNC age=211 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844540: writeback_single_inode: bdi 8:0: ino=134218160 state=I_DIRTY_SYNC age=210 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844543: writeback_single_inode: bdi 8:0: ino=134218161 state=I_DIRTY_SYNC age=210 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844545: writeback_single_inode: bdi 8:0: ino=134218162 state=I_DIRTY_SYNC age=210 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844548: writeback_single_inode: bdi 8:0: ino=268628539 state=I_DIRTY_SYNC age=210 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844550: writeback_single_inode: bdi 8:0: ino=268628540 state=I_DIRTY_SYNC age=210 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844553: writeback_single_inode: bdi 8:0: ino=268628541 state=I_DIRTY_SYNC age=210 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844556: writeback_single_inode: bdi 8:0: ino=268628542 state=I_DIRTY_SYNC age=210 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844558: writeback_single_inode: bdi 8:0: ino=268628543 state=I_DIRTY_SYNC age=210 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844561: writeback_single_inode: bdi 8:0: ino=402653431 state=I_DIRTY_SYNC age=210 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844564: writeback_single_inode: bdi 8:0: ino=272 state=I_DIRTY_SYNC age=209 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844566: writeback_single_inode: bdi 8:0: ino=273 state=I_DIRTY_SYNC age=209 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844569: writeback_single_inode: bdi 8:0: ino=274 state=I_DIRTY_SYNC age=209 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844572: writeback_single_inode: bdi 8:0: ino=275 state=I_DIRTY_SYNC age=209 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844574: writeback_single_inode: bdi 8:0: ino=276 state=I_DIRTY_SYNC age=209 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844577: writeback_single_inode: bdi 8:0: ino=277 state=I_DIRTY_SYNC age=209 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844579: writeback_single_inode: bdi 8:0: ino=278 state=I_DIRTY_SYNC age=209 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844582: writeback_single_inode: bdi 8:0: ino=279 state=I_DIRTY_SYNC age=209 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844585: writeback_single_inode: bdi 8:0: ino=280 state=I_DIRTY_SYNC age=209 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844588: writeback_single_inode: bdi 8:0: ino=134218163 state=I_DIRTY_SYNC age=208 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844590: writeback_single_inode: bdi 8:0: ino=134218164 state=I_DIRTY_SYNC age=208 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844593: writeback_single_inode: bdi 8:0: ino=134218166 state=I_DIRTY_SYNC age=208 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844595: writeback_single_inode: bdi 8:0: ino=134218167 state=I_DIRTY_SYNC age=208 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844598: writeback_single_inode: bdi 8:0: ino=134218168 state=I_DIRTY_SYNC age=208 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844600: writeback_single_inode: bdi 8:0: ino=134218169 state=I_DIRTY_SYNC age=208 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844603: writeback_single_inode: bdi 8:0: ino=134218170 state=I_DIRTY_SYNC age=208 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844606: writeback_single_inode: bdi 8:0: ino=134218171 state=I_DIRTY_SYNC age=208 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844609: writeback_single_inode: bdi 8:0: ino=268628609 state=I_DIRTY_SYNC age=207 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844612: writeback_single_inode: bdi 8:0: ino=402653433 state=I_DIRTY_SYNC age=207 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844614: writeback_single_inode: bdi 8:0: ino=402653434 state=I_DIRTY_SYNC age=207 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844617: writeback_single_inode: bdi 8:0: ino=402653435 state=I_DIRTY_SYNC age=207 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844619: writeback_single_inode: bdi 8:0: ino=134218172 state=I_DIRTY_SYNC age=207 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844622: writeback_single_inode: bdi 8:0: ino=134218173 state=I_DIRTY_SYNC age=206 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844625: writeback_single_inode: bdi 8:0: ino=134218174 state=I_DIRTY_SYNC age=206 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844628: writeback_single_inode: bdi 8:0: ino=134218175 state=I_DIRTY_SYNC age=206 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844630: writeback_single_inode: bdi 8:0: ino=282 state=I_DIRTY_SYNC age=206 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844633: writeback_single_inode: bdi 8:0: ino=283 state=I_DIRTY_SYNC age=206 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844636: writeback_single_inode: bdi 8:0: ino=284 state=I_DIRTY_SYNC age=205 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844638: writeback_single_inode: bdi 8:0: ino=285 state=I_DIRTY_SYNC age=205 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844641: writeback_single_inode: bdi 8:0: ino=286 state=I_DIRTY_SYNC age=205 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844644: writeback_single_inode: bdi 8:0: ino=287 state=I_DIRTY_SYNC age=204 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844646: writeback_single_inode: bdi 8:0: ino=288 state=I_DIRTY_SYNC age=204 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844649: writeback_single_inode: bdi 8:0: ino=289 state=I_DIRTY_SYNC age=204 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844652: writeback_single_inode: bdi 8:0: ino=134218177 state=I_DIRTY_SYNC age=204 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844654: writeback_single_inode: bdi 8:0: ino=134218178 state=I_DIRTY_SYNC age=204 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844657: writeback_single_inode: bdi 8:0: ino=134218179 state=I_DIRTY_SYNC age=204 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844659: writeback_single_inode: bdi 8:0: ino=134218180 state=I_DIRTY_SYNC age=204 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844662: writeback_single_inode: bdi 8:0: ino=134218181 state=I_DIRTY_SYNC age=204 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844664: writeback_single_inode: bdi 8:0: ino=134218182 state=I_DIRTY_SYNC age=204 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844667: writeback_single_inode: bdi 8:0: ino=134218183 state=I_DIRTY_SYNC age=203 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844669: writeback_single_inode: bdi 8:0: ino=134218184 state=I_DIRTY_SYNC age=203 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844672: writeback_single_inode: bdi 8:0: ino=134218185 state=I_DIRTY_SYNC age=203 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844675: writeback_single_inode: bdi 8:0: ino=134218186 state=I_DIRTY_SYNC age=203 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844678: writeback_single_inode: bdi 8:0: ino=134218187 state=I_DIRTY_SYNC age=203 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844680: writeback_single_inode: bdi 8:0: ino=134218188 state=I_DIRTY_SYNC age=203 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844683: writeback_single_inode: bdi 8:0: ino=134218189 state=I_DIRTY_SYNC age=203 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844686: writeback_single_inode: bdi 8:0: ino=134218190 state=I_DIRTY_SYNC age=203 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844689: writeback_single_inode: bdi 8:0: ino=291 state=I_DIRTY_SYNC age=201 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844692: writeback_single_inode: bdi 8:0: ino=402653437 state=I_DIRTY_SYNC age=201 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844695: writeback_single_inode: bdi 8:0: ino=134218192 state=I_DIRTY_SYNC age=201 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844698: writeback_single_inode: bdi 8:0: ino=134218193 state=I_DIRTY_SYNC age=201 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844700: writeback_single_inode: bdi 8:0: ino=134218194 state=I_DIRTY_SYNC age=201 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844703: writeback_single_inode: bdi 8:0: ino=268628612 state=I_DIRTY_SYNC age=201 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844706: writeback_single_inode: bdi 8:0: ino=402653438 state=I_DIRTY_SYNC age=201 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844709: writeback_single_inode: bdi 8:0: ino=402653440 state=I_DIRTY_SYNC age=200 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844712: writeback_single_inode: bdi 8:0: ino=402653441 state=I_DIRTY_SYNC age=200 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844714: writeback_single_inode: bdi 8:0: ino=293 state=I_DIRTY_SYNC age=200 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844717: writeback_single_inode: bdi 8:0: ino=294 state=I_DIRTY_SYNC age=200 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844719: writeback_single_inode: bdi 8:0: ino=268628614 state=I_DIRTY_SYNC age=200 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844722: writeback_single_inode: bdi 8:0: ino=268628615 state=I_DIRTY_SYNC age=200 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844725: writeback_single_inode: bdi 8:0: ino=134218196 state=I_DIRTY_SYNC age=200 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844727: writeback_single_inode: bdi 8:0: ino=134218197 state=I_DIRTY_SYNC age=200 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844730: writeback_single_inode: bdi 8:0: ino=134218198 state=I_DIRTY_SYNC age=200 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844732: writeback_single_inode: bdi 8:0: ino=402653443 state=I_DIRTY_SYNC age=200 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844735: writeback_single_inode: bdi 8:0: ino=134218200 state=I_DIRTY_SYNC age=200 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844738: writeback_single_inode: bdi 8:0: ino=134218201 state=I_DIRTY_SYNC age=199 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844741: writeback_single_inode: bdi 8:0: ino=134218202 state=I_DIRTY_SYNC age=199 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844744: writeback_single_inode: bdi 8:0: ino=134218203 state=I_DIRTY_SYNC age=199 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844747: writeback_single_inode: bdi 8:0: ino=134218204 state=I_DIRTY_SYNC age=199 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844750: writeback_single_inode: bdi 8:0: ino=268628617 state=I_DIRTY_SYNC age=199 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844753: writeback_single_inode: bdi 8:0: ino=402653445 state=I_DIRTY_SYNC age=199 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844756: writeback_single_inode: bdi 8:0: ino=297 state=I_DIRTY_SYNC age=199 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844759: writeback_single_inode: bdi 8:0: ino=298 state=I_DIRTY_SYNC age=199 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844762: writeback_single_inode: bdi 8:0: ino=299 state=I_DIRTY_SYNC age=177 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844764: writeback_single_inode: bdi 8:0: ino=300 state=I_DIRTY_SYNC age=177 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844767: writeback_single_inode: bdi 8:0: ino=402653446 state=I_DIRTY_SYNC age=177 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844770: writeback_single_inode: bdi 8:0: ino=402653447 state=I_DIRTY_SYNC age=177 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844772: writeback_single_inode: bdi 8:0: ino=402653448 state=I_DIRTY_SYNC age=177 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844775: writeback_single_inode: bdi 8:0: ino=134218206 state=I_DIRTY_SYNC age=177 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844777: writeback_single_inode: bdi 8:0: ino=134218207 state=I_DIRTY_SYNC age=177 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844780: writeback_single_inode: bdi 8:0: ino=134218240 state=I_DIRTY_SYNC age=177 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844782: writeback_single_inode: bdi 8:0: ino=134218241 state=I_DIRTY_SYNC age=177 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844785: writeback_single_inode: bdi 8:0: ino=134218242 state=I_DIRTY_SYNC age=177 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844787: writeback_single_inode: bdi 8:0: ino=402653449 state=I_DIRTY_SYNC age=176 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844790: writeback_single_inode: bdi 8:0: ino=268628618 state=I_DIRTY_SYNC age=176 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844792: writeback_single_inode: bdi 8:0: ino=268628619 state=I_DIRTY_SYNC age=176 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844795: writeback_single_inode: bdi 8:0: ino=268628620 state=I_DIRTY_SYNC age=176 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844797: writeback_single_inode: bdi 8:0: ino=268628621 state=I_DIRTY_SYNC age=176 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844800: writeback_single_inode: bdi 8:0: ino=268628622 state=I_DIRTY_SYNC age=176 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844803: writeback_single_inode: bdi 8:0: ino=268628623 state=I_DIRTY_SYNC age=176 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844805: writeback_single_inode: bdi 8:0: ino=268628624 state=I_DIRTY_SYNC age=176 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844808: writeback_single_inode: bdi 8:0: ino=268628625 state=I_DIRTY_SYNC age=176 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844810: writeback_single_inode: bdi 8:0: ino=268628626 state=I_DIRTY_SYNC age=176 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844813: writeback_single_inode: bdi 8:0: ino=268628627 state=I_DIRTY_SYNC age=176 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844816: writeback_single_inode: bdi 8:0: ino=268628628 state=I_DIRTY_SYNC age=176 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844818: writeback_single_inode: bdi 8:0: ino=268628629 state=I_DIRTY_SYNC age=175 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844821: writeback_single_inode: bdi 8:0: ino=268628630 state=I_DIRTY_SYNC age=175 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844823: writeback_single_inode: bdi 8:0: ino=268628631 state=I_DIRTY_SYNC age=175 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844826: writeback_single_inode: bdi 8:0: ino=268628632 state=I_DIRTY_SYNC age=175 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844828: writeback_single_inode: bdi 8:0: ino=268628634 state=I_DIRTY_SYNC age=175 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844831: writeback_single_inode: bdi 8:0: ino=268628635 state=I_DIRTY_SYNC age=175 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844834: writeback_single_inode: bdi 8:0: ino=402653451 state=I_DIRTY_SYNC age=175 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844836: writeback_single_inode: bdi 8:0: ino=402653452 state=I_DIRTY_SYNC age=175 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844839: writeback_single_inode: bdi 8:0: ino=302 state=I_DIRTY_SYNC age=175 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844842: writeback_single_inode: bdi 8:0: ino=303 state=I_DIRTY_SYNC age=175 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844844: writeback_single_inode: bdi 8:0: ino=402653453 state=I_DIRTY_SYNC age=175 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844847: writeback_single_inode: bdi 8:0: ino=268628636 state=I_DIRTY_SYNC age=174 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844850: writeback_single_inode: bdi 8:0: ino=134218243 state=I_DIRTY_SYNC age=174 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844852: writeback_single_inode: bdi 8:0: ino=134218244 state=I_DIRTY_SYNC age=174 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844855: writeback_single_inode: bdi 8:0: ino=134218246 state=I_DIRTY_SYNC age=174 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844857: writeback_single_inode: bdi 8:0: ino=134218247 state=I_DIRTY_SYNC age=174 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844860: writeback_single_inode: bdi 8:0: ino=134218248 state=I_DIRTY_SYNC age=174 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844863: writeback_single_inode: bdi 8:0: ino=134218249 state=I_DIRTY_SYNC age=174 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844865: writeback_single_inode: bdi 8:0: ino=134218250 state=I_DIRTY_SYNC age=174 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844868: writeback_single_inode: bdi 8:0: ino=134218251 state=I_DIRTY_SYNC age=174 index=0 to_write=1024 wrote=0
              dd-2975  [002]  2466.844871: writeback_single_inode: bdi 8:0: ino=134218252 state=I_DIRTY_SYNC age=174 index=0 to_write=1024 wrote=0
##### CPU 0 buffer started ####
              dd-2975  [000]  2468.156785: writeback_single_inode: bdi 8:0: ino=316 state=I_DIRTY_SYNC age=1433 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.156787: writeback_single_inode: bdi 8:0: ino=317 state=I_DIRTY_SYNC age=1433 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.156789: writeback_single_inode: bdi 8:0: ino=318 state=I_DIRTY_SYNC age=1433 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.156791: writeback_single_inode: bdi 8:0: ino=319 state=I_DIRTY_SYNC age=1432 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.156794: writeback_single_inode: bdi 8:0: ino=2101728 state=I_DIRTY_SYNC age=1432 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.156796: writeback_single_inode: bdi 8:0: ino=2101729 state=I_DIRTY_SYNC age=1432 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.156798: writeback_single_inode: bdi 8:0: ino=2101730 state=I_DIRTY_SYNC age=1432 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.156800: writeback_single_inode: bdi 8:0: ino=134230306 state=I_DIRTY_SYNC age=1432 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.156802: writeback_single_inode: bdi 8:0: ino=134230307 state=I_DIRTY_SYNC age=1431 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.156804: writeback_single_inode: bdi 8:0: ino=134230308 state=I_DIRTY_SYNC age=1431 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.156807: writeback_single_inode: bdi 8:0: ino=134230309 state=I_DIRTY_SYNC age=1430 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.156809: writeback_single_inode: bdi 8:0: ino=134230310 state=I_DIRTY_SYNC age=1430 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.156811: writeback_single_inode: bdi 8:0: ino=134230312 state=I_DIRTY_SYNC age=1430 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.156813: writeback_single_inode: bdi 8:0: ino=134230313 state=I_DIRTY_SYNC age=1430 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.156815: writeback_single_inode: bdi 8:0: ino=134230314 state=I_DIRTY_SYNC age=1430 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.156818: writeback_single_inode: bdi 8:0: ino=134230315 state=I_DIRTY_SYNC age=1429 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.156820: writeback_single_inode: bdi 8:0: ino=134230316 state=I_DIRTY_SYNC age=1429 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.156822: writeback_single_inode: bdi 8:0: ino=134230317 state=I_DIRTY_SYNC age=1429 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.156824: writeback_single_inode: bdi 8:0: ino=134230318 state=I_DIRTY_SYNC age=1429 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.156826: writeback_single_inode: bdi 8:0: ino=134230319 state=I_DIRTY_SYNC age=1429 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.156829: writeback_single_inode: bdi 8:0: ino=134230320 state=I_DIRTY_SYNC age=1429 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.156831: writeback_single_inode: bdi 8:0: ino=134230321 state=I_DIRTY_SYNC age=1429 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.156833: writeback_single_inode: bdi 8:0: ino=134230322 state=I_DIRTY_SYNC age=1429 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.156835: writeback_single_inode: bdi 8:0: ino=134230323 state=I_DIRTY_SYNC age=1428 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.156837: writeback_single_inode: bdi 8:0: ino=134230324 state=I_DIRTY_SYNC age=1428 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.156839: writeback_single_inode: bdi 8:0: ino=134230325 state=I_DIRTY_SYNC age=1428 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.156842: writeback_single_inode: bdi 8:0: ino=134230326 state=I_DIRTY_SYNC age=1428 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.156844: writeback_single_inode: bdi 8:0: ino=134230327 state=I_DIRTY_SYNC age=1428 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.156846: writeback_single_inode: bdi 8:0: ino=134230328 state=I_DIRTY_SYNC age=1428 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.156848: writeback_single_inode: bdi 8:0: ino=134230329 state=I_DIRTY_SYNC age=1428 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.156850: writeback_single_inode: bdi 8:0: ino=134230330 state=I_DIRTY_SYNC age=1428 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.156853: writeback_single_inode: bdi 8:0: ino=134230331 state=I_DIRTY_SYNC age=1427 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.156855: writeback_single_inode: bdi 8:0: ino=134230332 state=I_DIRTY_SYNC age=1427 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.156857: writeback_single_inode: bdi 8:0: ino=134230333 state=I_DIRTY_SYNC age=1427 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.156859: writeback_single_inode: bdi 8:0: ino=134230334 state=I_DIRTY_SYNC age=1427 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.156861: writeback_single_inode: bdi 8:0: ino=134230335 state=I_DIRTY_SYNC age=1427 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.156863: writeback_single_inode: bdi 8:0: ino=134230336 state=I_DIRTY_SYNC age=1427 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.156866: writeback_single_inode: bdi 8:0: ino=134230337 state=I_DIRTY_SYNC age=1427 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.156868: writeback_single_inode: bdi 8:0: ino=134230338 state=I_DIRTY_SYNC age=1427 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.156870: writeback_single_inode: bdi 8:0: ino=134230339 state=I_DIRTY_SYNC age=1427 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.156872: writeback_single_inode: bdi 8:0: ino=134230340 state=I_DIRTY_SYNC age=1426 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.156874: writeback_single_inode: bdi 8:0: ino=134230341 state=I_DIRTY_SYNC age=1426 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.156876: writeback_single_inode: bdi 8:0: ino=134230342 state=I_DIRTY_SYNC age=1426 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.156879: writeback_single_inode: bdi 8:0: ino=134230343 state=I_DIRTY_SYNC age=1426 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.156881: writeback_single_inode: bdi 8:0: ino=134230344 state=I_DIRTY_SYNC age=1426 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.156883: writeback_single_inode: bdi 8:0: ino=134230345 state=I_DIRTY_SYNC age=1426 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.156885: writeback_single_inode: bdi 8:0: ino=134230346 state=I_DIRTY_SYNC age=1426 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.156888: writeback_single_inode: bdi 8:0: ino=134230347 state=I_DIRTY_SYNC age=1426 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.156890: writeback_single_inode: bdi 8:0: ino=134230348 state=I_DIRTY_SYNC age=1426 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.156892: writeback_single_inode: bdi 8:0: ino=134230349 state=I_DIRTY_SYNC age=1425 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.156894: writeback_single_inode: bdi 8:0: ino=134230350 state=I_DIRTY_SYNC age=1425 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.156896: writeback_single_inode: bdi 8:0: ino=134230351 state=I_DIRTY_SYNC age=1403 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.156898: writeback_single_inode: bdi 8:0: ino=134230352 state=I_DIRTY_SYNC age=1403 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.156901: writeback_single_inode: bdi 8:0: ino=134230353 state=I_DIRTY_SYNC age=1402 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.156903: writeback_single_inode: bdi 8:0: ino=134230354 state=I_DIRTY_SYNC age=1402 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.156905: writeback_single_inode: bdi 8:0: ino=134230355 state=I_DIRTY_SYNC age=1402 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.156907: writeback_single_inode: bdi 8:0: ino=134230356 state=I_DIRTY_SYNC age=1402 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.156909: writeback_single_inode: bdi 8:0: ino=134230357 state=I_DIRTY_SYNC age=1402 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.156912: writeback_single_inode: bdi 8:0: ino=134230358 state=I_DIRTY_SYNC age=1402 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.156914: writeback_single_inode: bdi 8:0: ino=134230359 state=I_DIRTY_SYNC age=1402 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.156916: writeback_single_inode: bdi 8:0: ino=134230360 state=I_DIRTY_SYNC age=1401 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.156918: writeback_single_inode: bdi 8:0: ino=134230361 state=I_DIRTY_SYNC age=1401 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.156920: writeback_single_inode: bdi 8:0: ino=134230362 state=I_DIRTY_SYNC age=1401 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.156922: writeback_single_inode: bdi 8:0: ino=134230363 state=I_DIRTY_SYNC age=1401 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.156925: writeback_single_inode: bdi 8:0: ino=134230364 state=I_DIRTY_SYNC age=1401 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.156927: writeback_single_inode: bdi 8:0: ino=134230365 state=I_DIRTY_SYNC age=1401 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.156929: writeback_single_inode: bdi 8:0: ino=134230366 state=I_DIRTY_SYNC age=1401 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.156931: writeback_single_inode: bdi 8:0: ino=134230367 state=I_DIRTY_SYNC age=1401 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.156933: writeback_single_inode: bdi 8:0: ino=134230368 state=I_DIRTY_SYNC age=1400 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.156936: writeback_single_inode: bdi 8:0: ino=134230369 state=I_DIRTY_SYNC age=1400 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.156938: writeback_single_inode: bdi 8:0: ino=134230370 state=I_DIRTY_SYNC age=1400 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.156940: writeback_single_inode: bdi 8:0: ino=134230371 state=I_DIRTY_SYNC age=1400 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.156942: writeback_single_inode: bdi 8:0: ino=134230372 state=I_DIRTY_SYNC age=1400 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.156944: writeback_single_inode: bdi 8:0: ino=134230373 state=I_DIRTY_SYNC age=1400 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.156947: writeback_single_inode: bdi 8:0: ino=134230374 state=I_DIRTY_SYNC age=1400 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.156949: writeback_single_inode: bdi 8:0: ino=134230375 state=I_DIRTY_SYNC age=1400 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.156951: writeback_single_inode: bdi 8:0: ino=134230376 state=I_DIRTY_SYNC age=1400 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.156953: writeback_single_inode: bdi 8:0: ino=134230377 state=I_DIRTY_SYNC age=1399 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.156955: writeback_single_inode: bdi 8:0: ino=134230378 state=I_DIRTY_SYNC age=1399 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.156957: writeback_single_inode: bdi 8:0: ino=134230379 state=I_DIRTY_SYNC age=1399 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.156960: writeback_single_inode: bdi 8:0: ino=134230380 state=I_DIRTY_SYNC age=1399 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.156962: writeback_single_inode: bdi 8:0: ino=134230381 state=I_DIRTY_SYNC age=1399 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.156964: writeback_single_inode: bdi 8:0: ino=134230382 state=I_DIRTY_SYNC age=1399 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.156966: writeback_single_inode: bdi 8:0: ino=134230383 state=I_DIRTY_SYNC age=1399 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.156968: writeback_single_inode: bdi 8:0: ino=134230384 state=I_DIRTY_SYNC age=1398 index=0 to_write=1024 wrote=0
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              dd-2975  [000]  2468.157110: writeback_single_inode: bdi 8:0: ino=2101734 state=I_DIRTY_SYNC age=1391 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.157112: writeback_single_inode: bdi 8:0: ino=2101735 state=I_DIRTY_SYNC age=1391 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.157114: writeback_single_inode: bdi 8:0: ino=2101736 state=I_DIRTY_SYNC age=1391 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.157116: writeback_single_inode: bdi 8:0: ino=2101737 state=I_DIRTY_SYNC age=1391 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.157118: writeback_single_inode: bdi 8:0: ino=2101738 state=I_DIRTY_SYNC age=1391 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.157121: writeback_single_inode: bdi 8:0: ino=134230394 state=I_DIRTY_SYNC age=1390 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.157123: writeback_single_inode: bdi 8:0: ino=134230395 state=I_DIRTY_SYNC age=1390 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.157125: writeback_single_inode: bdi 8:0: ino=134230397 state=I_DIRTY_SYNC age=1390 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.157127: writeback_single_inode: bdi 8:0: ino=134230398 state=I_DIRTY_SYNC age=1390 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.157130: writeback_single_inode: bdi 8:0: ino=134230399 state=I_DIRTY_SYNC age=1390 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.157132: writeback_single_inode: bdi 8:0: ino=134230400 state=I_DIRTY_SYNC age=1389 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.157134: writeback_single_inode: bdi 8:0: ino=134230401 state=I_DIRTY_SYNC age=1389 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.157136: writeback_single_inode: bdi 8:0: ino=134230402 state=I_DIRTY_SYNC age=1389 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.157138: writeback_single_inode: bdi 8:0: ino=134230403 state=I_DIRTY_SYNC age=1389 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.157140: writeback_single_inode: bdi 8:0: ino=134230404 state=I_DIRTY_SYNC age=1389 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.157143: writeback_single_inode: bdi 8:0: ino=134230405 state=I_DIRTY_SYNC age=1388 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.157145: writeback_single_inode: bdi 8:0: ino=134230406 state=I_DIRTY_SYNC age=1388 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.157147: writeback_single_inode: bdi 8:0: ino=134230407 state=I_DIRTY_SYNC age=1388 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.157149: writeback_single_inode: bdi 8:0: ino=134230408 state=I_DIRTY_SYNC age=1388 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.157151: writeback_single_inode: bdi 8:0: ino=134230409 state=I_DIRTY_SYNC age=1388 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.157154: writeback_single_inode: bdi 8:0: ino=134230410 state=I_DIRTY_SYNC age=1387 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.157156: writeback_single_inode: bdi 8:0: ino=134230411 state=I_DIRTY_SYNC age=1387 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.157158: writeback_single_inode: bdi 8:0: ino=134230412 state=I_DIRTY_SYNC age=1387 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.157160: writeback_single_inode: bdi 8:0: ino=134230413 state=I_DIRTY_SYNC age=1387 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.157162: writeback_single_inode: bdi 8:0: ino=134230414 state=I_DIRTY_SYNC age=1386 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.157165: writeback_single_inode: bdi 8:0: ino=134230415 state=I_DIRTY_SYNC age=1386 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.157167: writeback_single_inode: bdi 8:0: ino=134230416 state=I_DIRTY_SYNC age=1386 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.157169: writeback_single_inode: bdi 8:0: ino=134230417 state=I_DIRTY_SYNC age=1386 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.157171: writeback_single_inode: bdi 8:0: ino=134230418 state=I_DIRTY_SYNC age=1385 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.157173: writeback_single_inode: bdi 8:0: ino=134230419 state=I_DIRTY_SYNC age=1385 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.157175: writeback_single_inode: bdi 8:0: ino=134230420 state=I_DIRTY_SYNC age=1385 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.157178: writeback_single_inode: bdi 8:0: ino=134230421 state=I_DIRTY_SYNC age=1385 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.157180: writeback_single_inode: bdi 8:0: ino=134230422 state=I_DIRTY_SYNC age=1385 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.157182: writeback_single_inode: bdi 8:0: ino=134230423 state=I_DIRTY_SYNC age=1384 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.157184: writeback_single_inode: bdi 8:0: ino=134230424 state=I_DIRTY_SYNC age=1384 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.157186: writeback_single_inode: bdi 8:0: ino=134230425 state=I_DIRTY_SYNC age=1384 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.157189: writeback_single_inode: bdi 8:0: ino=268633717 state=I_DIRTY_SYNC age=1384 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.157191: writeback_single_inode: bdi 8:0: ino=268633718 state=I_DIRTY_SYNC age=1384 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.157193: writeback_single_inode: bdi 8:0: ino=268633719 state=I_DIRTY_SYNC age=1384 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.157195: writeback_single_inode: bdi 8:0: ino=268633720 state=I_DIRTY_SYNC age=1383 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.157197: writeback_single_inode: bdi 8:0: ino=268633721 state=I_DIRTY_SYNC age=1383 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.157199: writeback_single_inode: bdi 8:0: ino=134230426 state=I_DIRTY_SYNC age=1383 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.157202: writeback_single_inode: bdi 8:0: ino=134230427 state=I_DIRTY_SYNC age=1383 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.157204: writeback_single_inode: bdi 8:0: ino=134230428 state=I_DIRTY_SYNC age=1382 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.157206: writeback_single_inode: bdi 8:0: ino=402659608 state=I_DIRTY_SYNC age=1382 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.157208: writeback_single_inode: bdi 8:0: ino=402659609 state=I_DIRTY_SYNC age=1382 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.157210: writeback_single_inode: bdi 8:0: ino=402659610 state=I_DIRTY_SYNC age=1382 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.157213: writeback_single_inode: bdi 8:0: ino=402659611 state=I_DIRTY_SYNC age=1382 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.157215: writeback_single_inode: bdi 8:0: ino=402659612 state=I_DIRTY_SYNC age=1382 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.157217: writeback_single_inode: bdi 8:0: ino=402659613 state=I_DIRTY_SYNC age=1381 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.157219: writeback_single_inode: bdi 8:0: ino=402659614 state=I_DIRTY_SYNC age=1381 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.157221: writeback_single_inode: bdi 8:0: ino=402659615 state=I_DIRTY_SYNC age=1380 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.157223: writeback_single_inode: bdi 8:0: ino=402659616 state=I_DIRTY_SYNC age=1380 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.157226: writeback_single_inode: bdi 8:0: ino=402659617 state=I_DIRTY_SYNC age=1380 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.157228: writeback_single_inode: bdi 8:0: ino=402659618 state=I_DIRTY_SYNC age=1380 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.157230: writeback_single_inode: bdi 8:0: ino=402659619 state=I_DIRTY_SYNC age=1379 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.157232: writeback_single_inode: bdi 8:0: ino=402659620 state=I_DIRTY_SYNC age=1356 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.157234: writeback_single_inode: bdi 8:0: ino=402659621 state=I_DIRTY_SYNC age=1356 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.157237: writeback_single_inode: bdi 8:0: ino=402659622 state=I_DIRTY_SYNC age=1356 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.157239: writeback_single_inode: bdi 8:0: ino=402659623 state=I_DIRTY_SYNC age=1355 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.157241: writeback_single_inode: bdi 8:0: ino=402659624 state=I_DIRTY_SYNC age=1355 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.157243: writeback_single_inode: bdi 8:0: ino=402659625 state=I_DIRTY_SYNC age=1355 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.157245: writeback_single_inode: bdi 8:0: ino=402659626 state=I_DIRTY_SYNC age=1355 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.157248: writeback_single_inode: bdi 8:0: ino=402659627 state=I_DIRTY_SYNC age=1355 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.157250: writeback_single_inode: bdi 8:0: ino=402659628 state=I_DIRTY_SYNC age=1355 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.157252: writeback_single_inode: bdi 8:0: ino=402659629 state=I_DIRTY_SYNC age=1355 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.157254: writeback_single_inode: bdi 8:0: ino=402659630 state=I_DIRTY_SYNC age=1354 index=0 to_write=1024 wrote=0
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              dd-2975  [000]  2468.157287: writeback_single_inode: bdi 8:0: ino=268633723 state=I_DIRTY_SYNC age=1350 index=0 to_write=1024 wrote=0
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              dd-2975  [000]  2468.157386: writeback_single_inode: bdi 8:0: ino=134230496 state=I_DIRTY_SYNC age=687 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.157388: writeback_single_inode: bdi 8:0: ino=134230497 state=I_DIRTY_SYNC age=687 index=0 to_write=1024 wrote=0
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              dd-2975  [000]  2468.157399: writeback_single_inode: bdi 8:0: ino=134230499 state=I_DIRTY_SYNC age=685 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.157402: writeback_single_inode: bdi 8:0: ino=134230501 state=I_DIRTY_SYNC age=684 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.157404: writeback_single_inode: bdi 8:0: ino=134230502 state=I_DIRTY_SYNC age=684 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.157406: writeback_single_inode: bdi 8:0: ino=134230503 state=I_DIRTY_SYNC age=684 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.157408: writeback_single_inode: bdi 8:0: ino=134230504 state=I_DIRTY_SYNC age=683 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.157410: writeback_single_inode: bdi 8:0: ino=134230505 state=I_DIRTY_SYNC age=681 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.157413: writeback_single_inode: bdi 8:0: ino=134230506 state=I_DIRTY_SYNC age=681 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.157415: writeback_single_inode: bdi 8:0: ino=268633729 state=I_DIRTY_SYNC age=681 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.157417: writeback_single_inode: bdi 8:0: ino=268633730 state=I_DIRTY_SYNC age=681 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.157419: writeback_single_inode: bdi 8:0: ino=402659643 state=I_DIRTY_SYNC age=681 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.157421: writeback_single_inode: bdi 8:0: ino=402659644 state=I_DIRTY_SYNC age=681 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.157424: writeback_single_inode: bdi 8:0: ino=402659645 state=I_DIRTY_SYNC age=681 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.157426: writeback_single_inode: bdi 8:0: ino=402659646 state=I_DIRTY_SYNC age=681 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.157428: writeback_single_inode: bdi 8:0: ino=402659647 state=I_DIRTY_SYNC age=681 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.157430: writeback_single_inode: bdi 8:0: ino=402659640 state=I_DIRTY_SYNC age=104 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.179278: writeback_queue_io: bdi 8:0: older=0 age=-1 enqueue=1031
              dd-2975  [000]  2468.179281: writeback_single_inode: bdi 8:0: ino=131 state=I_DIRTY_SYNC|I_DIRTY_DATASYNC|I_DIRTY_PAGES|I_SYNC age=1810 index=28700 to_write=1024 wrote=0
              dd-2975  [000]  2468.179287: writeback_single_inode: bdi 8:0: ino=133 state=I_DIRTY_SYNC age=1760 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.179291: writeback_single_inode: bdi 8:0: ino=134 state=I_DIRTY_SYNC age=1760 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.179294: writeback_single_inode: bdi 8:0: ino=135 state=I_DIRTY_SYNC age=1760 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.179298: writeback_single_inode: bdi 8:0: ino=136 state=I_DIRTY_SYNC age=1759 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.179301: writeback_single_inode: bdi 8:0: ino=134217857 state=I_DIRTY_SYNC age=1742 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.179305: writeback_single_inode: bdi 8:0: ino=134217858 state=I_DIRTY_SYNC age=1742 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.179308: writeback_single_inode: bdi 8:0: ino=268628417 state=I_DIRTY_SYNC age=1732 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.179312: writeback_single_inode: bdi 8:0: ino=402653313 state=I_DIRTY_SYNC age=1719 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.179316: writeback_single_inode: bdi 8:0: ino=402653314 state=I_DIRTY_SYNC age=1718 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.179319: writeback_single_inode: bdi 8:0: ino=402653315 state=I_DIRTY_SYNC age=1718 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.179323: writeback_single_inode: bdi 8:0: ino=402653316 state=I_DIRTY_SYNC age=1718 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.179327: writeback_single_inode: bdi 8:0: ino=138 state=I_DIRTY_SYNC age=1718 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.179330: writeback_single_inode: bdi 8:0: ino=139 state=I_DIRTY_SYNC age=1718 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.179334: writeback_single_inode: bdi 8:0: ino=140 state=I_DIRTY_SYNC age=1718 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.179338: writeback_single_inode: bdi 8:0: ino=141 state=I_DIRTY_SYNC age=1718 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.179342: writeback_single_inode: bdi 8:0: ino=134217860 state=I_DIRTY_SYNC age=1718 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.179345: writeback_single_inode: bdi 8:0: ino=134217861 state=I_DIRTY_SYNC age=1718 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.179349: writeback_single_inode: bdi 8:0: ino=134217862 state=I_DIRTY_SYNC age=1718 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.179353: writeback_single_inode: bdi 8:0: ino=134217863 state=I_DIRTY_SYNC age=1718 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.179357: writeback_single_inode: bdi 8:0: ino=134217864 state=I_DIRTY_SYNC age=1717 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.179360: writeback_single_inode: bdi 8:0: ino=134217865 state=I_DIRTY_SYNC age=1717 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.179364: writeback_single_inode: bdi 8:0: ino=134217866 state=I_DIRTY_SYNC age=1717 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.179367: writeback_single_inode: bdi 8:0: ino=134217867 state=I_DIRTY_SYNC age=1717 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.179371: writeback_single_inode: bdi 8:0: ino=134217868 state=I_DIRTY_SYNC age=1717 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.179374: writeback_single_inode: bdi 8:0: ino=134217869 state=I_DIRTY_SYNC age=1717 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.179378: writeback_single_inode: bdi 8:0: ino=268628419 state=I_DIRTY_SYNC age=1717 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.179382: writeback_single_inode: bdi 8:0: ino=268628420 state=I_DIRTY_SYNC age=1717 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.179385: writeback_single_inode: bdi 8:0: ino=268628421 state=I_DIRTY_SYNC age=1717 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.179389: writeback_single_inode: bdi 8:0: ino=268628422 state=I_DIRTY_SYNC age=1717 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.179392: writeback_single_inode: bdi 8:0: ino=268628423 state=I_DIRTY_SYNC age=1717 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.179396: writeback_single_inode: bdi 8:0: ino=268628424 state=I_DIRTY_SYNC age=1717 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.179400: writeback_single_inode: bdi 8:0: ino=268628425 state=I_DIRTY_SYNC age=1717 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.179403: writeback_single_inode: bdi 8:0: ino=268628426 state=I_DIRTY_SYNC age=1716 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.179407: writeback_single_inode: bdi 8:0: ino=268628427 state=I_DIRTY_SYNC age=1716 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.179410: writeback_single_inode: bdi 8:0: ino=268628428 state=I_DIRTY_SYNC age=1716 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.179414: writeback_single_inode: bdi 8:0: ino=268628429 state=I_DIRTY_SYNC age=1716 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.179417: writeback_single_inode: bdi 8:0: ino=268628430 state=I_DIRTY_SYNC age=1716 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.179421: writeback_single_inode: bdi 8:0: ino=268628431 state=I_DIRTY_SYNC age=1716 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.179425: writeback_single_inode: bdi 8:0: ino=268628432 state=I_DIRTY_SYNC age=1716 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.179428: writeback_single_inode: bdi 8:0: ino=268628433 state=I_DIRTY_SYNC age=1716 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.179432: writeback_single_inode: bdi 8:0: ino=268628434 state=I_DIRTY_SYNC age=1716 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.179436: writeback_single_inode: bdi 8:0: ino=268628435 state=I_DIRTY_SYNC age=1716 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.179439: writeback_single_inode: bdi 8:0: ino=268628436 state=I_DIRTY_SYNC age=1716 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.179442: writeback_single_inode: bdi 8:0: ino=268628437 state=I_DIRTY_SYNC age=1716 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.179446: writeback_single_inode: bdi 8:0: ino=268628438 state=I_DIRTY_SYNC age=1716 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.179449: writeback_single_inode: bdi 8:0: ino=268628439 state=I_DIRTY_SYNC age=1715 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.179453: writeback_single_inode: bdi 8:0: ino=268628440 state=I_DIRTY_SYNC age=1715 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.179456: writeback_single_inode: bdi 8:0: ino=268628441 state=I_DIRTY_SYNC age=1715 index=0 to_write=1024 wrote=0
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              dd-2975  [000]  2468.179686: writeback_single_inode: bdi 8:0: ino=147 state=I_DIRTY_SYNC age=1707 index=0 to_write=1024 wrote=0
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              dd-2975  [000]  2468.179700: writeback_single_inode: bdi 8:0: ino=151 state=I_DIRTY_SYNC age=1695 index=0 to_write=1024 wrote=0
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              dd-2975  [000]  2468.179707: writeback_single_inode: bdi 8:0: ino=153 state=I_DIRTY_SYNC age=1695 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.179711: writeback_single_inode: bdi 8:0: ino=154 state=I_DIRTY_SYNC age=1694 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.179715: writeback_single_inode: bdi 8:0: ino=155 state=I_DIRTY_SYNC age=1694 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.179718: writeback_single_inode: bdi 8:0: ino=156 state=I_DIRTY_SYNC age=1693 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.179722: writeback_single_inode: bdi 8:0: ino=157 state=I_DIRTY_SYNC age=1692 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.179725: writeback_single_inode: bdi 8:0: ino=402653326 state=I_DIRTY_SYNC age=1691 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.179729: writeback_single_inode: bdi 8:0: ino=402653327 state=I_DIRTY_SYNC age=1691 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.179733: writeback_single_inode: bdi 8:0: ino=402653328 state=I_DIRTY_SYNC age=1670 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.179736: writeback_single_inode: bdi 8:0: ino=402653329 state=I_DIRTY_SYNC age=1670 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.179740: writeback_single_inode: bdi 8:0: ino=402653330 state=I_DIRTY_SYNC age=1670 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.179744: writeback_single_inode: bdi 8:0: ino=402653331 state=I_DIRTY_SYNC age=1669 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.179747: writeback_single_inode: bdi 8:0: ino=402653332 state=I_DIRTY_SYNC age=1668 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.179751: writeback_single_inode: bdi 8:0: ino=402653333 state=I_DIRTY_SYNC age=1667 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.179755: writeback_single_inode: bdi 8:0: ino=402653334 state=I_DIRTY_SYNC age=1666 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.179758: writeback_single_inode: bdi 8:0: ino=402653335 state=I_DIRTY_SYNC age=1666 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.179762: writeback_single_inode: bdi 8:0: ino=402653336 state=I_DIRTY_SYNC age=1666 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.179766: writeback_single_inode: bdi 8:0: ino=402653337 state=I_DIRTY_SYNC age=1666 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.179769: writeback_single_inode: bdi 8:0: ino=402653338 state=I_DIRTY_SYNC age=1666 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.179773: writeback_single_inode: bdi 8:0: ino=402653339 state=I_DIRTY_SYNC age=1665 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.179776: writeback_single_inode: bdi 8:0: ino=402653340 state=I_DIRTY_SYNC age=1665 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.179780: writeback_single_inode: bdi 8:0: ino=402653341 state=I_DIRTY_SYNC age=1665 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.179784: writeback_single_inode: bdi 8:0: ino=402653342 state=I_DIRTY_SYNC age=1664 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.179788: writeback_single_inode: bdi 8:0: ino=402653343 state=I_DIRTY_SYNC age=1664 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.179791: writeback_single_inode: bdi 8:0: ino=402653344 state=I_DIRTY_SYNC age=1664 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.179795: writeback_single_inode: bdi 8:0: ino=402653345 state=I_DIRTY_SYNC age=1664 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.179798: writeback_single_inode: bdi 8:0: ino=402653346 state=I_DIRTY_SYNC age=1664 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.179802: writeback_single_inode: bdi 8:0: ino=402653347 state=I_DIRTY_SYNC age=1664 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.179806: writeback_single_inode: bdi 8:0: ino=402653348 state=I_DIRTY_SYNC age=1664 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.179809: writeback_single_inode: bdi 8:0: ino=402653349 state=I_DIRTY_SYNC age=1664 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.179813: writeback_single_inode: bdi 8:0: ino=402653350 state=I_DIRTY_SYNC age=1663 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.179816: writeback_single_inode: bdi 8:0: ino=134217878 state=I_DIRTY_SYNC age=1662 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.179820: writeback_single_inode: bdi 8:0: ino=134217879 state=I_DIRTY_SYNC age=1662 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.179823: writeback_single_inode: bdi 8:0: ino=134217880 state=I_DIRTY_SYNC age=1662 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.179827: writeback_single_inode: bdi 8:0: ino=134217881 state=I_DIRTY_SYNC age=1662 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.179830: writeback_single_inode: bdi 8:0: ino=134217882 state=I_DIRTY_SYNC age=1661 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.179834: writeback_single_inode: bdi 8:0: ino=134217883 state=I_DIRTY_SYNC age=1659 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.179837: writeback_single_inode: bdi 8:0: ino=134217884 state=I_DIRTY_SYNC age=1658 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.179841: writeback_single_inode: bdi 8:0: ino=134217885 state=I_DIRTY_SYNC age=1658 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.179844: writeback_single_inode: bdi 8:0: ino=134217886 state=I_DIRTY_SYNC age=1657 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.179848: writeback_single_inode: bdi 8:0: ino=134217887 state=I_DIRTY_SYNC age=1657 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.179851: writeback_single_inode: bdi 8:0: ino=134217888 state=I_DIRTY_SYNC age=1657 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.179855: writeback_single_inode: bdi 8:0: ino=134217889 state=I_DIRTY_SYNC age=1657 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.179859: writeback_single_inode: bdi 8:0: ino=134217890 state=I_DIRTY_SYNC age=1657 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.179863: writeback_single_inode: bdi 8:0: ino=134217891 state=I_DIRTY_SYNC age=1657 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.179866: writeback_single_inode: bdi 8:0: ino=134217892 state=I_DIRTY_SYNC age=1657 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.179870: writeback_single_inode: bdi 8:0: ino=134217893 state=I_DIRTY_SYNC age=1657 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.179873: writeback_single_inode: bdi 8:0: ino=134217894 state=I_DIRTY_SYNC age=1657 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.179877: writeback_single_inode: bdi 8:0: ino=134217895 state=I_DIRTY_SYNC age=1656 index=0 to_write=1024 wrote=0
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              dd-2975  [000]  2468.179884: writeback_single_inode: bdi 8:0: ino=134217897 state=I_DIRTY_SYNC age=1656 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.179887: writeback_single_inode: bdi 8:0: ino=134217898 state=I_DIRTY_SYNC age=1656 index=0 to_write=1024 wrote=0
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              dd-2975  [000]  2468.179895: writeback_single_inode: bdi 8:0: ino=134217900 state=I_DIRTY_SYNC age=1655 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.179898: writeback_single_inode: bdi 8:0: ino=134217901 state=I_DIRTY_SYNC age=1655 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.179902: writeback_single_inode: bdi 8:0: ino=134217902 state=I_DIRTY_SYNC age=1638 index=0 to_write=1024 wrote=0
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              dd-2975  [000]  2468.179909: writeback_single_inode: bdi 8:0: ino=134217904 state=I_DIRTY_SYNC age=1638 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.179913: writeback_single_inode: bdi 8:0: ino=134217905 state=I_DIRTY_SYNC age=1638 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.179916: writeback_single_inode: bdi 8:0: ino=134217906 state=I_DIRTY_SYNC age=1638 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.179920: writeback_single_inode: bdi 8:0: ino=134217907 state=I_DIRTY_SYNC age=1637 index=0 to_write=1024 wrote=0
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              dd-2975  [000]  2468.179932: writeback_single_inode: bdi 8:0: ino=134217910 state=I_DIRTY_SYNC age=1637 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.179935: writeback_single_inode: bdi 8:0: ino=134217911 state=I_DIRTY_SYNC age=1637 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.179938: writeback_single_inode: bdi 8:0: ino=134217912 state=I_DIRTY_SYNC age=1637 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.179942: writeback_single_inode: bdi 8:0: ino=134217913 state=I_DIRTY_SYNC age=1637 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.179945: writeback_single_inode: bdi 8:0: ino=134217914 state=I_DIRTY_SYNC age=1636 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.179949: writeback_single_inode: bdi 8:0: ino=134217915 state=I_DIRTY_SYNC age=1636 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.179953: writeback_single_inode: bdi 8:0: ino=134217916 state=I_DIRTY_SYNC age=1636 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.179956: writeback_single_inode: bdi 8:0: ino=134217917 state=I_DIRTY_SYNC age=1636 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.179960: writeback_single_inode: bdi 8:0: ino=134217918 state=I_DIRTY_SYNC age=1636 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.179963: writeback_single_inode: bdi 8:0: ino=134217919 state=I_DIRTY_SYNC age=1636 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.179967: writeback_single_inode: bdi 8:0: ino=134217984 state=I_DIRTY_SYNC age=1635 index=0 to_write=1024 wrote=0
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              dd-2975  [000]  2468.179978: writeback_single_inode: bdi 8:0: ino=134217987 state=I_DIRTY_SYNC age=1635 index=0 to_write=1024 wrote=0
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              dd-2975  [000]  2468.179998: writeback_single_inode: bdi 8:0: ino=134217991 state=I_DIRTY_SYNC age=1635 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180002: writeback_single_inode: bdi 8:0: ino=134217992 state=I_DIRTY_SYNC age=1635 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180005: writeback_single_inode: bdi 8:0: ino=134217993 state=I_DIRTY_SYNC age=1635 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180009: writeback_single_inode: bdi 8:0: ino=134217994 state=I_DIRTY_SYNC age=1635 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180013: writeback_single_inode: bdi 8:0: ino=134217995 state=I_DIRTY_SYNC age=1635 index=0 to_write=1024 wrote=0
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              dd-2975  [000]  2468.180027: writeback_single_inode: bdi 8:0: ino=134217999 state=I_DIRTY_SYNC age=1635 index=0 to_write=1024 wrote=0
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              dd-2975  [000]  2468.180046: writeback_single_inode: bdi 8:0: ino=134218004 state=I_DIRTY_SYNC age=1634 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180049: writeback_single_inode: bdi 8:0: ino=134218005 state=I_DIRTY_SYNC age=1634 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180053: writeback_single_inode: bdi 8:0: ino=134218006 state=I_DIRTY_SYNC age=1634 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180057: writeback_single_inode: bdi 8:0: ino=134218007 state=I_DIRTY_SYNC age=1634 index=0 to_write=1024 wrote=0
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              dd-2975  [000]  2468.180064: writeback_single_inode: bdi 8:0: ino=134218009 state=I_DIRTY_SYNC age=1634 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180068: writeback_single_inode: bdi 8:0: ino=134218010 state=I_DIRTY_SYNC age=1633 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180071: writeback_single_inode: bdi 8:0: ino=134218011 state=I_DIRTY_SYNC age=1633 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180075: writeback_single_inode: bdi 8:0: ino=134218012 state=I_DIRTY_SYNC age=1633 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180079: writeback_single_inode: bdi 8:0: ino=134218013 state=I_DIRTY_SYNC age=1633 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180082: writeback_single_inode: bdi 8:0: ino=134218014 state=I_DIRTY_SYNC age=1632 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180086: writeback_single_inode: bdi 8:0: ino=134218015 state=I_DIRTY_SYNC age=1632 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180089: writeback_single_inode: bdi 8:0: ino=134218016 state=I_DIRTY_SYNC age=1632 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180093: writeback_single_inode: bdi 8:0: ino=134218017 state=I_DIRTY_SYNC age=1632 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180097: writeback_single_inode: bdi 8:0: ino=134218018 state=I_DIRTY_SYNC age=1631 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180100: writeback_single_inode: bdi 8:0: ino=134218019 state=I_DIRTY_SYNC age=1631 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180104: writeback_single_inode: bdi 8:0: ino=134218020 state=I_DIRTY_SYNC age=1631 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180107: writeback_single_inode: bdi 8:0: ino=134218021 state=I_DIRTY_SYNC age=1631 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180111: writeback_single_inode: bdi 8:0: ino=134218022 state=I_DIRTY_SYNC age=1631 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180114: writeback_single_inode: bdi 8:0: ino=134218023 state=I_DIRTY_SYNC age=1630 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180118: writeback_single_inode: bdi 8:0: ino=134218024 state=I_DIRTY_SYNC age=1630 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180122: writeback_single_inode: bdi 8:0: ino=134218025 state=I_DIRTY_SYNC age=1630 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180125: writeback_single_inode: bdi 8:0: ino=134218026 state=I_DIRTY_SYNC age=1630 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180129: writeback_single_inode: bdi 8:0: ino=134218027 state=I_DIRTY_SYNC age=1630 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180132: writeback_single_inode: bdi 8:0: ino=134218028 state=I_DIRTY_SYNC age=1630 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180136: writeback_single_inode: bdi 8:0: ino=134218029 state=I_DIRTY_SYNC age=1630 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180139: writeback_single_inode: bdi 8:0: ino=134218030 state=I_DIRTY_SYNC age=1630 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180143: writeback_single_inode: bdi 8:0: ino=134218031 state=I_DIRTY_SYNC age=1630 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180146: writeback_single_inode: bdi 8:0: ino=134218032 state=I_DIRTY_SYNC age=1629 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180149: writeback_single_inode: bdi 8:0: ino=134218033 state=I_DIRTY_SYNC age=1629 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180153: writeback_single_inode: bdi 8:0: ino=134218034 state=I_DIRTY_SYNC age=1629 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180156: writeback_single_inode: bdi 8:0: ino=134218035 state=I_DIRTY_SYNC age=1629 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180159: writeback_single_inode: bdi 8:0: ino=134218036 state=I_DIRTY_SYNC age=1629 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180163: writeback_single_inode: bdi 8:0: ino=134218037 state=I_DIRTY_SYNC age=1628 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180166: writeback_single_inode: bdi 8:0: ino=134218038 state=I_DIRTY_SYNC age=1628 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180170: writeback_single_inode: bdi 8:0: ino=134218039 state=I_DIRTY_SYNC age=1628 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180173: writeback_single_inode: bdi 8:0: ino=134218040 state=I_DIRTY_SYNC age=1628 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180177: writeback_single_inode: bdi 8:0: ino=134218041 state=I_DIRTY_SYNC age=1628 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180181: writeback_single_inode: bdi 8:0: ino=134218042 state=I_DIRTY_SYNC age=1628 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180184: writeback_single_inode: bdi 8:0: ino=134218043 state=I_DIRTY_SYNC age=1628 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180188: writeback_single_inode: bdi 8:0: ino=134218044 state=I_DIRTY_SYNC age=1628 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180192: writeback_single_inode: bdi 8:0: ino=134218045 state=I_DIRTY_SYNC age=1628 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180195: writeback_single_inode: bdi 8:0: ino=134218046 state=I_DIRTY_SYNC age=1627 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180199: writeback_single_inode: bdi 8:0: ino=134218047 state=I_DIRTY_SYNC age=1627 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180203: writeback_single_inode: bdi 8:0: ino=134218048 state=I_DIRTY_SYNC age=1627 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180206: writeback_single_inode: bdi 8:0: ino=134218049 state=I_DIRTY_SYNC age=1627 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180210: writeback_single_inode: bdi 8:0: ino=134218050 state=I_DIRTY_SYNC age=1627 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180214: writeback_single_inode: bdi 8:0: ino=134218051 state=I_DIRTY_SYNC age=1627 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180217: writeback_single_inode: bdi 8:0: ino=134218052 state=I_DIRTY_SYNC age=1627 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180220: writeback_single_inode: bdi 8:0: ino=134218053 state=I_DIRTY_SYNC age=1627 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180224: writeback_single_inode: bdi 8:0: ino=134218054 state=I_DIRTY_SYNC age=1626 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180227: writeback_single_inode: bdi 8:0: ino=134218055 state=I_DIRTY_SYNC age=1626 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180231: writeback_single_inode: bdi 8:0: ino=134218056 state=I_DIRTY_SYNC age=1626 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180234: writeback_single_inode: bdi 8:0: ino=134218057 state=I_DIRTY_SYNC age=1626 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180238: writeback_single_inode: bdi 8:0: ino=134218058 state=I_DIRTY_SYNC age=1626 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180241: writeback_single_inode: bdi 8:0: ino=134218059 state=I_DIRTY_SYNC age=1626 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180245: writeback_single_inode: bdi 8:0: ino=402653351 state=I_DIRTY_SYNC age=1626 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180248: writeback_single_inode: bdi 8:0: ino=402653352 state=I_DIRTY_SYNC age=1600 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180252: writeback_single_inode: bdi 8:0: ino=402653353 state=I_DIRTY_SYNC age=1599 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180255: writeback_single_inode: bdi 8:0: ino=134218060 state=I_DIRTY_SYNC age=1599 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180259: writeback_single_inode: bdi 8:0: ino=134218061 state=I_DIRTY_SYNC age=1598 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180262: writeback_single_inode: bdi 8:0: ino=134218062 state=I_DIRTY_SYNC age=1598 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180266: writeback_single_inode: bdi 8:0: ino=134218063 state=I_DIRTY_SYNC age=1598 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180269: writeback_single_inode: bdi 8:0: ino=134218064 state=I_DIRTY_SYNC age=1598 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180273: writeback_single_inode: bdi 8:0: ino=134218065 state=I_DIRTY_SYNC age=1598 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180276: writeback_single_inode: bdi 8:0: ino=134218066 state=I_DIRTY_SYNC age=1597 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180280: writeback_single_inode: bdi 8:0: ino=268628487 state=I_DIRTY_SYNC age=1597 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180283: writeback_single_inode: bdi 8:0: ino=268628488 state=I_DIRTY_SYNC age=1597 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180287: writeback_single_inode: bdi 8:0: ino=268628489 state=I_DIRTY_SYNC age=1597 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180290: writeback_single_inode: bdi 8:0: ino=268628490 state=I_DIRTY_SYNC age=1597 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180294: writeback_single_inode: bdi 8:0: ino=268628491 state=I_DIRTY_SYNC age=1596 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180298: writeback_single_inode: bdi 8:0: ino=268628492 state=I_DIRTY_SYNC age=1596 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180302: writeback_single_inode: bdi 8:0: ino=268628493 state=I_DIRTY_SYNC age=1596 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180306: writeback_single_inode: bdi 8:0: ino=402653355 state=I_DIRTY_SYNC age=1595 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180309: writeback_single_inode: bdi 8:0: ino=402653356 state=I_DIRTY_SYNC age=1595 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180313: writeback_single_inode: bdi 8:0: ino=402653357 state=I_DIRTY_SYNC age=1595 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180317: writeback_single_inode: bdi 8:0: ino=402653358 state=I_DIRTY_SYNC age=1595 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180320: writeback_single_inode: bdi 8:0: ino=402653359 state=I_DIRTY_SYNC age=1595 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180324: writeback_single_inode: bdi 8:0: ino=402653360 state=I_DIRTY_SYNC age=1594 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180327: writeback_single_inode: bdi 8:0: ino=402653361 state=I_DIRTY_SYNC age=1594 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180331: writeback_single_inode: bdi 8:0: ino=402653362 state=I_DIRTY_SYNC age=1594 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180334: writeback_single_inode: bdi 8:0: ino=402653363 state=I_DIRTY_SYNC age=1594 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180338: writeback_single_inode: bdi 8:0: ino=402653364 state=I_DIRTY_SYNC age=1594 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180341: writeback_single_inode: bdi 8:0: ino=402653365 state=I_DIRTY_SYNC age=1593 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180344: writeback_single_inode: bdi 8:0: ino=402653366 state=I_DIRTY_SYNC age=1593 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180348: writeback_single_inode: bdi 8:0: ino=402653367 state=I_DIRTY_SYNC age=1593 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180351: writeback_single_inode: bdi 8:0: ino=402653368 state=I_DIRTY_SYNC age=1593 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180355: writeback_single_inode: bdi 8:0: ino=402653369 state=I_DIRTY_SYNC age=1593 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180358: writeback_single_inode: bdi 8:0: ino=402653370 state=I_DIRTY_SYNC age=1592 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180361: writeback_single_inode: bdi 8:0: ino=134218067 state=I_DIRTY_SYNC age=1592 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180365: writeback_single_inode: bdi 8:0: ino=134218068 state=I_DIRTY_SYNC age=1592 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180368: writeback_single_inode: bdi 8:0: ino=134218069 state=I_DIRTY_SYNC age=1592 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180372: writeback_single_inode: bdi 8:0: ino=134218070 state=I_DIRTY_SYNC age=1591 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180375: writeback_single_inode: bdi 8:0: ino=134218071 state=I_DIRTY_SYNC age=1591 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180379: writeback_single_inode: bdi 8:0: ino=134218072 state=I_DIRTY_SYNC age=1591 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180382: writeback_single_inode: bdi 8:0: ino=134218073 state=I_DIRTY_SYNC age=1591 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180386: writeback_single_inode: bdi 8:0: ino=134218074 state=I_DIRTY_SYNC age=1591 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180389: writeback_single_inode: bdi 8:0: ino=134218075 state=I_DIRTY_SYNC age=1590 index=0 to_write=1024 wrote=0
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              dd-2975  [000]  2468.180410: writeback_single_inode: bdi 8:0: ino=164 state=I_DIRTY_SYNC age=1589 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180413: writeback_single_inode: bdi 8:0: ino=165 state=I_DIRTY_SYNC age=1589 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180417: writeback_single_inode: bdi 8:0: ino=268628495 state=I_DIRTY_SYNC age=1589 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180420: writeback_single_inode: bdi 8:0: ino=268628496 state=I_DIRTY_SYNC age=1589 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180423: writeback_single_inode: bdi 8:0: ino=134218077 state=I_DIRTY_SYNC age=1589 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180427: writeback_single_inode: bdi 8:0: ino=134218078 state=I_DIRTY_SYNC age=1589 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180431: writeback_single_inode: bdi 8:0: ino=134218079 state=I_DIRTY_SYNC age=1589 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180434: writeback_single_inode: bdi 8:0: ino=134218080 state=I_DIRTY_SYNC age=1589 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180437: writeback_single_inode: bdi 8:0: ino=402653372 state=I_DIRTY_SYNC age=1588 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180441: writeback_single_inode: bdi 8:0: ino=402653373 state=I_DIRTY_SYNC age=1588 index=0 to_write=1024 wrote=0
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              dd-2975  [000]  2468.180458: writeback_single_inode: bdi 8:0: ino=402653410 state=I_DIRTY_SYNC age=1588 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180461: writeback_single_inode: bdi 8:0: ino=402653411 state=I_DIRTY_SYNC age=1588 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180465: writeback_single_inode: bdi 8:0: ino=134218081 state=I_DIRTY_SYNC age=1588 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180468: writeback_single_inode: bdi 8:0: ino=134218082 state=I_DIRTY_SYNC age=1588 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180471: writeback_single_inode: bdi 8:0: ino=167 state=I_DIRTY_SYNC age=1588 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180475: writeback_single_inode: bdi 8:0: ino=168 state=I_DIRTY_SYNC age=1588 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180478: writeback_single_inode: bdi 8:0: ino=169 state=I_DIRTY_SYNC age=1588 index=0 to_write=1024 wrote=0
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              dd-2975  [000]  2468.180489: writeback_single_inode: bdi 8:0: ino=172 state=I_DIRTY_SYNC age=1587 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180492: writeback_single_inode: bdi 8:0: ino=134218084 state=I_DIRTY_SYNC age=1587 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180496: writeback_single_inode: bdi 8:0: ino=134218085 state=I_DIRTY_SYNC age=1587 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180499: writeback_single_inode: bdi 8:0: ino=173 state=I_DIRTY_SYNC age=1587 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180502: writeback_single_inode: bdi 8:0: ino=174 state=I_DIRTY_SYNC age=1587 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180505: writeback_single_inode: bdi 8:0: ino=268628498 state=I_DIRTY_SYNC age=1587 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180509: writeback_single_inode: bdi 8:0: ino=268628499 state=I_DIRTY_SYNC age=1587 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180513: writeback_single_inode: bdi 8:0: ino=268628500 state=I_DIRTY_SYNC age=1587 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180516: writeback_single_inode: bdi 8:0: ino=268628501 state=I_DIRTY_SYNC age=1586 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180520: writeback_single_inode: bdi 8:0: ino=268628502 state=I_DIRTY_SYNC age=1586 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180523: writeback_single_inode: bdi 8:0: ino=268628503 state=I_DIRTY_SYNC age=1586 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180526: writeback_single_inode: bdi 8:0: ino=268628504 state=I_DIRTY_SYNC age=1586 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180530: writeback_single_inode: bdi 8:0: ino=268628505 state=I_DIRTY_SYNC age=1586 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180533: writeback_single_inode: bdi 8:0: ino=268628506 state=I_DIRTY_SYNC age=1586 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180537: writeback_single_inode: bdi 8:0: ino=268628507 state=I_DIRTY_SYNC age=1586 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180540: writeback_single_inode: bdi 8:0: ino=268628508 state=I_DIRTY_SYNC age=1586 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180543: writeback_single_inode: bdi 8:0: ino=268628509 state=I_DIRTY_SYNC age=1586 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180547: writeback_single_inode: bdi 8:0: ino=268628510 state=I_DIRTY_SYNC age=1586 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180550: writeback_single_inode: bdi 8:0: ino=268628511 state=I_DIRTY_SYNC age=1586 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180553: writeback_single_inode: bdi 8:0: ino=268628512 state=I_DIRTY_SYNC age=1586 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180557: writeback_single_inode: bdi 8:0: ino=268628513 state=I_DIRTY_SYNC age=1586 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180560: writeback_single_inode: bdi 8:0: ino=268628514 state=I_DIRTY_SYNC age=1586 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180564: writeback_single_inode: bdi 8:0: ino=268628515 state=I_DIRTY_SYNC age=1585 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180567: writeback_single_inode: bdi 8:0: ino=402653413 state=I_DIRTY_SYNC age=1585 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180571: writeback_single_inode: bdi 8:0: ino=176 state=I_DIRTY_SYNC age=1585 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180574: writeback_single_inode: bdi 8:0: ino=177 state=I_DIRTY_SYNC age=1585 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180578: writeback_single_inode: bdi 8:0: ino=178 state=I_DIRTY_SYNC age=1585 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180581: writeback_single_inode: bdi 8:0: ino=179 state=I_DIRTY_SYNC age=1585 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180584: writeback_single_inode: bdi 8:0: ino=180 state=I_DIRTY_SYNC age=1585 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180588: writeback_single_inode: bdi 8:0: ino=181 state=I_DIRTY_SYNC age=1585 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180591: writeback_single_inode: bdi 8:0: ino=182 state=I_DIRTY_SYNC age=1585 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180595: writeback_single_inode: bdi 8:0: ino=183 state=I_DIRTY_SYNC age=1585 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180598: writeback_single_inode: bdi 8:0: ino=184 state=I_DIRTY_SYNC age=1585 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180602: writeback_single_inode: bdi 8:0: ino=185 state=I_DIRTY_SYNC age=1585 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180605: writeback_single_inode: bdi 8:0: ino=186 state=I_DIRTY_SYNC age=1584 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180608: writeback_single_inode: bdi 8:0: ino=187 state=I_DIRTY_SYNC age=1584 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180612: writeback_single_inode: bdi 8:0: ino=134218087 state=I_DIRTY_SYNC age=1584 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180615: writeback_single_inode: bdi 8:0: ino=134218088 state=I_DIRTY_SYNC age=1584 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180619: writeback_single_inode: bdi 8:0: ino=134218089 state=I_DIRTY_SYNC age=1584 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180622: writeback_single_inode: bdi 8:0: ino=188 state=I_DIRTY_SYNC age=1584 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180625: writeback_single_inode: bdi 8:0: ino=268628517 state=I_DIRTY_SYNC age=1584 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180629: writeback_single_inode: bdi 8:0: ino=268628518 state=I_DIRTY_SYNC age=1584 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180632: writeback_single_inode: bdi 8:0: ino=268628519 state=I_DIRTY_SYNC age=1584 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180635: writeback_single_inode: bdi 8:0: ino=268628520 state=I_DIRTY_SYNC age=1584 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180639: writeback_single_inode: bdi 8:0: ino=268628521 state=I_DIRTY_SYNC age=1584 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180643: writeback_single_inode: bdi 8:0: ino=268628522 state=I_DIRTY_SYNC age=1584 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180646: writeback_single_inode: bdi 8:0: ino=268628523 state=I_DIRTY_SYNC age=1584 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180649: writeback_single_inode: bdi 8:0: ino=268628524 state=I_DIRTY_SYNC age=1583 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180653: writeback_single_inode: bdi 8:0: ino=268628525 state=I_DIRTY_SYNC age=1583 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180656: writeback_single_inode: bdi 8:0: ino=402653415 state=I_DIRTY_SYNC age=1583 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180660: writeback_single_inode: bdi 8:0: ino=189 state=I_DIRTY_SYNC age=1583 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180663: writeback_single_inode: bdi 8:0: ino=190 state=I_DIRTY_SYNC age=1583 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180667: writeback_single_inode: bdi 8:0: ino=256 state=I_DIRTY_SYNC age=1583 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180670: writeback_single_inode: bdi 8:0: ino=134218091 state=I_DIRTY_SYNC age=1583 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180674: writeback_single_inode: bdi 8:0: ino=134218092 state=I_DIRTY_SYNC age=1583 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180677: writeback_single_inode: bdi 8:0: ino=134218093 state=I_DIRTY_SYNC age=1583 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180680: writeback_single_inode: bdi 8:0: ino=134218094 state=I_DIRTY_SYNC age=1583 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180684: writeback_single_inode: bdi 8:0: ino=268628527 state=I_DIRTY_SYNC age=1582 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180687: writeback_single_inode: bdi 8:0: ino=257 state=I_DIRTY_SYNC age=1582 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180691: writeback_single_inode: bdi 8:0: ino=258 state=I_DIRTY_SYNC age=1582 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180694: writeback_single_inode: bdi 8:0: ino=134218095 state=I_DIRTY_SYNC age=1582 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180697: writeback_single_inode: bdi 8:0: ino=402653417 state=I_DIRTY_SYNC age=1582 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180701: writeback_single_inode: bdi 8:0: ino=402653418 state=I_DIRTY_SYNC age=1582 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180704: writeback_single_inode: bdi 8:0: ino=402653419 state=I_DIRTY_SYNC age=1582 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180708: writeback_single_inode: bdi 8:0: ino=402653420 state=I_DIRTY_SYNC age=1582 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180711: writeback_single_inode: bdi 8:0: ino=402653421 state=I_DIRTY_SYNC age=1582 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180715: writeback_single_inode: bdi 8:0: ino=134218096 state=I_DIRTY_SYNC age=1582 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180718: writeback_single_inode: bdi 8:0: ino=134218097 state=I_DIRTY_SYNC age=1582 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180721: writeback_single_inode: bdi 8:0: ino=134218098 state=I_DIRTY_SYNC age=1582 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180725: writeback_single_inode: bdi 8:0: ino=260 state=I_DIRTY_SYNC age=1581 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180728: writeback_single_inode: bdi 8:0: ino=261 state=I_DIRTY_SYNC age=1581 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180731: writeback_single_inode: bdi 8:0: ino=262 state=I_DIRTY_SYNC age=1581 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180735: writeback_single_inode: bdi 8:0: ino=263 state=I_DIRTY_SYNC age=1581 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180738: writeback_single_inode: bdi 8:0: ino=264 state=I_DIRTY_SYNC age=1581 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180742: writeback_single_inode: bdi 8:0: ino=134218100 state=I_DIRTY_SYNC age=1581 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180745: writeback_single_inode: bdi 8:0: ino=134218101 state=I_DIRTY_SYNC age=1581 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180749: writeback_single_inode: bdi 8:0: ino=134218102 state=I_DIRTY_SYNC age=1581 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180753: writeback_single_inode: bdi 8:0: ino=134218103 state=I_DIRTY_SYNC age=1581 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180756: writeback_single_inode: bdi 8:0: ino=134218104 state=I_DIRTY_SYNC age=1580 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180759: writeback_single_inode: bdi 8:0: ino=134218105 state=I_DIRTY_SYNC age=1580 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180763: writeback_single_inode: bdi 8:0: ino=134218106 state=I_DIRTY_SYNC age=1580 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180766: writeback_single_inode: bdi 8:0: ino=134218107 state=I_DIRTY_SYNC age=1580 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180769: writeback_single_inode: bdi 8:0: ino=134218108 state=I_DIRTY_SYNC age=1580 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180773: writeback_single_inode: bdi 8:0: ino=134218109 state=I_DIRTY_SYNC age=1558 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180776: writeback_single_inode: bdi 8:0: ino=134218110 state=I_DIRTY_SYNC age=1558 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180780: writeback_single_inode: bdi 8:0: ino=134218111 state=I_DIRTY_SYNC age=1557 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180783: writeback_single_inode: bdi 8:0: ino=268628529 state=I_DIRTY_SYNC age=1557 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180787: writeback_single_inode: bdi 8:0: ino=268628530 state=I_DIRTY_SYNC age=1557 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180790: writeback_single_inode: bdi 8:0: ino=268628531 state=I_DIRTY_SYNC age=1557 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180793: writeback_single_inode: bdi 8:0: ino=268628532 state=I_DIRTY_SYNC age=1557 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180797: writeback_single_inode: bdi 8:0: ino=402653423 state=I_DIRTY_SYNC age=1557 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180800: writeback_single_inode: bdi 8:0: ino=402653424 state=I_DIRTY_SYNC age=1557 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180804: writeback_single_inode: bdi 8:0: ino=402653425 state=I_DIRTY_SYNC age=1556 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180807: writeback_single_inode: bdi 8:0: ino=402653426 state=I_DIRTY_SYNC age=1556 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180811: writeback_single_inode: bdi 8:0: ino=402653427 state=I_DIRTY_SYNC age=1556 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180814: writeback_single_inode: bdi 8:0: ino=402653428 state=I_DIRTY_SYNC age=1556 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180818: writeback_single_inode: bdi 8:0: ino=402653429 state=I_DIRTY_SYNC age=1556 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180821: writeback_single_inode: bdi 8:0: ino=268628533 state=I_DIRTY_SYNC age=1556 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180824: writeback_single_inode: bdi 8:0: ino=268628534 state=I_DIRTY_SYNC age=1556 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180828: writeback_single_inode: bdi 8:0: ino=268628535 state=I_DIRTY_SYNC age=1556 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180831: writeback_single_inode: bdi 8:0: ino=268628536 state=I_DIRTY_SYNC age=1556 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180835: writeback_single_inode: bdi 8:0: ino=268628537 state=I_DIRTY_SYNC age=1555 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180838: writeback_single_inode: bdi 8:0: ino=134218144 state=I_DIRTY_SYNC age=1555 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180842: writeback_single_inode: bdi 8:0: ino=134218145 state=I_DIRTY_SYNC age=1555 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180845: writeback_single_inode: bdi 8:0: ino=134218146 state=I_DIRTY_SYNC age=1555 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180849: writeback_single_inode: bdi 8:0: ino=134218147 state=I_DIRTY_SYNC age=1555 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180852: writeback_single_inode: bdi 8:0: ino=134218148 state=I_DIRTY_SYNC age=1555 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180856: writeback_single_inode: bdi 8:0: ino=266 state=I_DIRTY_SYNC age=1555 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180859: writeback_single_inode: bdi 8:0: ino=267 state=I_DIRTY_SYNC age=1555 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180863: writeback_single_inode: bdi 8:0: ino=268 state=I_DIRTY_SYNC age=1555 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180866: writeback_single_inode: bdi 8:0: ino=269 state=I_DIRTY_SYNC age=1554 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180870: writeback_single_inode: bdi 8:0: ino=270 state=I_DIRTY_SYNC age=1553 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180873: writeback_single_inode: bdi 8:0: ino=134218150 state=I_DIRTY_SYNC age=1553 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180877: writeback_single_inode: bdi 8:0: ino=134218151 state=I_DIRTY_SYNC age=1553 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180880: writeback_single_inode: bdi 8:0: ino=134218152 state=I_DIRTY_SYNC age=1553 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180884: writeback_single_inode: bdi 8:0: ino=134218153 state=I_DIRTY_SYNC age=1552 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180887: writeback_single_inode: bdi 8:0: ino=134218154 state=I_DIRTY_SYNC age=1552 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180890: writeback_single_inode: bdi 8:0: ino=134218155 state=I_DIRTY_SYNC age=1552 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180894: writeback_single_inode: bdi 8:0: ino=134218156 state=I_DIRTY_SYNC age=1551 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180897: writeback_single_inode: bdi 8:0: ino=134218157 state=I_DIRTY_SYNC age=1551 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180901: writeback_single_inode: bdi 8:0: ino=134218158 state=I_DIRTY_SYNC age=1551 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180904: writeback_single_inode: bdi 8:0: ino=134218159 state=I_DIRTY_SYNC age=1551 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180908: writeback_single_inode: bdi 8:0: ino=134218160 state=I_DIRTY_SYNC age=1550 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180911: writeback_single_inode: bdi 8:0: ino=134218161 state=I_DIRTY_SYNC age=1550 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180915: writeback_single_inode: bdi 8:0: ino=134218162 state=I_DIRTY_SYNC age=1550 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180918: writeback_single_inode: bdi 8:0: ino=268628539 state=I_DIRTY_SYNC age=1550 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180921: writeback_single_inode: bdi 8:0: ino=268628540 state=I_DIRTY_SYNC age=1550 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180925: writeback_single_inode: bdi 8:0: ino=268628541 state=I_DIRTY_SYNC age=1550 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180928: writeback_single_inode: bdi 8:0: ino=268628542 state=I_DIRTY_SYNC age=1550 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180932: writeback_single_inode: bdi 8:0: ino=268628543 state=I_DIRTY_SYNC age=1550 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180935: writeback_single_inode: bdi 8:0: ino=402653431 state=I_DIRTY_SYNC age=1550 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180939: writeback_single_inode: bdi 8:0: ino=272 state=I_DIRTY_SYNC age=1549 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180942: writeback_single_inode: bdi 8:0: ino=273 state=I_DIRTY_SYNC age=1549 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180945: writeback_single_inode: bdi 8:0: ino=274 state=I_DIRTY_SYNC age=1549 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180949: writeback_single_inode: bdi 8:0: ino=275 state=I_DIRTY_SYNC age=1549 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180952: writeback_single_inode: bdi 8:0: ino=276 state=I_DIRTY_SYNC age=1549 index=0 to_write=1024 wrote=0
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              dd-2975  [000]  2468.180959: writeback_single_inode: bdi 8:0: ino=278 state=I_DIRTY_SYNC age=1549 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180963: writeback_single_inode: bdi 8:0: ino=279 state=I_DIRTY_SYNC age=1549 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180966: writeback_single_inode: bdi 8:0: ino=280 state=I_DIRTY_SYNC age=1549 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180970: writeback_single_inode: bdi 8:0: ino=134218163 state=I_DIRTY_SYNC age=1548 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180973: writeback_single_inode: bdi 8:0: ino=134218164 state=I_DIRTY_SYNC age=1548 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180977: writeback_single_inode: bdi 8:0: ino=134218166 state=I_DIRTY_SYNC age=1548 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180980: writeback_single_inode: bdi 8:0: ino=134218167 state=I_DIRTY_SYNC age=1548 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180984: writeback_single_inode: bdi 8:0: ino=134218168 state=I_DIRTY_SYNC age=1548 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.180999: writeback_single_inode: bdi 8:0: ino=134218169 state=I_DIRTY_SYNC age=1549 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181018: writeback_single_inode: bdi 8:0: ino=134218170 state=I_DIRTY_SYNC age=1549 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181022: writeback_single_inode: bdi 8:0: ino=134218171 state=I_DIRTY_SYNC age=1549 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181026: writeback_single_inode: bdi 8:0: ino=268628609 state=I_DIRTY_SYNC age=1548 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181030: writeback_single_inode: bdi 8:0: ino=402653433 state=I_DIRTY_SYNC age=1548 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181034: writeback_single_inode: bdi 8:0: ino=402653434 state=I_DIRTY_SYNC age=1548 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181038: writeback_single_inode: bdi 8:0: ino=402653435 state=I_DIRTY_SYNC age=1548 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181042: writeback_single_inode: bdi 8:0: ino=134218172 state=I_DIRTY_SYNC age=1548 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181045: writeback_single_inode: bdi 8:0: ino=134218173 state=I_DIRTY_SYNC age=1547 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181049: writeback_single_inode: bdi 8:0: ino=134218174 state=I_DIRTY_SYNC age=1547 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181053: writeback_single_inode: bdi 8:0: ino=134218175 state=I_DIRTY_SYNC age=1547 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181057: writeback_single_inode: bdi 8:0: ino=282 state=I_DIRTY_SYNC age=1547 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181061: writeback_single_inode: bdi 8:0: ino=283 state=I_DIRTY_SYNC age=1547 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181064: writeback_single_inode: bdi 8:0: ino=284 state=I_DIRTY_SYNC age=1546 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181068: writeback_single_inode: bdi 8:0: ino=285 state=I_DIRTY_SYNC age=1546 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181072: writeback_single_inode: bdi 8:0: ino=286 state=I_DIRTY_SYNC age=1546 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181078: writeback_single_inode: bdi 8:0: ino=287 state=I_DIRTY_SYNC age=1545 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181081: writeback_single_inode: bdi 8:0: ino=288 state=I_DIRTY_SYNC age=1545 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181084: writeback_single_inode: bdi 8:0: ino=289 state=I_DIRTY_SYNC age=1545 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181086: writeback_single_inode: bdi 8:0: ino=134218177 state=I_DIRTY_SYNC age=1545 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181089: writeback_single_inode: bdi 8:0: ino=134218178 state=I_DIRTY_SYNC age=1545 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181091: writeback_single_inode: bdi 8:0: ino=134218179 state=I_DIRTY_SYNC age=1545 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181094: writeback_single_inode: bdi 8:0: ino=134218180 state=I_DIRTY_SYNC age=1545 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181096: writeback_single_inode: bdi 8:0: ino=134218181 state=I_DIRTY_SYNC age=1545 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181099: writeback_single_inode: bdi 8:0: ino=134218182 state=I_DIRTY_SYNC age=1545 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181101: writeback_single_inode: bdi 8:0: ino=134218183 state=I_DIRTY_SYNC age=1544 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181103: writeback_single_inode: bdi 8:0: ino=134218184 state=I_DIRTY_SYNC age=1544 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181106: writeback_single_inode: bdi 8:0: ino=134218185 state=I_DIRTY_SYNC age=1544 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181108: writeback_single_inode: bdi 8:0: ino=134218186 state=I_DIRTY_SYNC age=1544 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181110: writeback_single_inode: bdi 8:0: ino=134218187 state=I_DIRTY_SYNC age=1544 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181112: writeback_single_inode: bdi 8:0: ino=134218188 state=I_DIRTY_SYNC age=1544 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181115: writeback_single_inode: bdi 8:0: ino=134218189 state=I_DIRTY_SYNC age=1544 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181117: writeback_single_inode: bdi 8:0: ino=134218190 state=I_DIRTY_SYNC age=1544 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181119: writeback_single_inode: bdi 8:0: ino=291 state=I_DIRTY_SYNC age=1542 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181122: writeback_single_inode: bdi 8:0: ino=402653437 state=I_DIRTY_SYNC age=1542 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181124: writeback_single_inode: bdi 8:0: ino=134218192 state=I_DIRTY_SYNC age=1542 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181127: writeback_single_inode: bdi 8:0: ino=134218193 state=I_DIRTY_SYNC age=1542 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181129: writeback_single_inode: bdi 8:0: ino=134218194 state=I_DIRTY_SYNC age=1542 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181131: writeback_single_inode: bdi 8:0: ino=268628612 state=I_DIRTY_SYNC age=1542 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181134: writeback_single_inode: bdi 8:0: ino=402653438 state=I_DIRTY_SYNC age=1542 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181137: writeback_single_inode: bdi 8:0: ino=402653440 state=I_DIRTY_SYNC age=1541 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181139: writeback_single_inode: bdi 8:0: ino=402653441 state=I_DIRTY_SYNC age=1541 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181141: writeback_single_inode: bdi 8:0: ino=293 state=I_DIRTY_SYNC age=1541 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181144: writeback_single_inode: bdi 8:0: ino=294 state=I_DIRTY_SYNC age=1541 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181146: writeback_single_inode: bdi 8:0: ino=268628614 state=I_DIRTY_SYNC age=1541 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181148: writeback_single_inode: bdi 8:0: ino=268628615 state=I_DIRTY_SYNC age=1541 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181151: writeback_single_inode: bdi 8:0: ino=134218196 state=I_DIRTY_SYNC age=1541 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181153: writeback_single_inode: bdi 8:0: ino=134218197 state=I_DIRTY_SYNC age=1541 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181155: writeback_single_inode: bdi 8:0: ino=134218198 state=I_DIRTY_SYNC age=1541 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181158: writeback_single_inode: bdi 8:0: ino=402653443 state=I_DIRTY_SYNC age=1541 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181160: writeback_single_inode: bdi 8:0: ino=134218200 state=I_DIRTY_SYNC age=1541 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181163: writeback_single_inode: bdi 8:0: ino=134218201 state=I_DIRTY_SYNC age=1540 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181165: writeback_single_inode: bdi 8:0: ino=134218202 state=I_DIRTY_SYNC age=1540 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181167: writeback_single_inode: bdi 8:0: ino=134218203 state=I_DIRTY_SYNC age=1540 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181169: writeback_single_inode: bdi 8:0: ino=134218204 state=I_DIRTY_SYNC age=1540 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181172: writeback_single_inode: bdi 8:0: ino=268628617 state=I_DIRTY_SYNC age=1540 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181174: writeback_single_inode: bdi 8:0: ino=402653445 state=I_DIRTY_SYNC age=1540 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181176: writeback_single_inode: bdi 8:0: ino=297 state=I_DIRTY_SYNC age=1540 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181178: writeback_single_inode: bdi 8:0: ino=298 state=I_DIRTY_SYNC age=1540 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181181: writeback_single_inode: bdi 8:0: ino=299 state=I_DIRTY_SYNC age=1518 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181183: writeback_single_inode: bdi 8:0: ino=300 state=I_DIRTY_SYNC age=1518 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181185: writeback_single_inode: bdi 8:0: ino=402653446 state=I_DIRTY_SYNC age=1518 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181188: writeback_single_inode: bdi 8:0: ino=402653447 state=I_DIRTY_SYNC age=1518 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181190: writeback_single_inode: bdi 8:0: ino=402653448 state=I_DIRTY_SYNC age=1518 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181192: writeback_single_inode: bdi 8:0: ino=134218206 state=I_DIRTY_SYNC age=1518 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181195: writeback_single_inode: bdi 8:0: ino=134218207 state=I_DIRTY_SYNC age=1518 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181197: writeback_single_inode: bdi 8:0: ino=134218240 state=I_DIRTY_SYNC age=1518 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181199: writeback_single_inode: bdi 8:0: ino=134218241 state=I_DIRTY_SYNC age=1518 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181201: writeback_single_inode: bdi 8:0: ino=134218242 state=I_DIRTY_SYNC age=1518 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181204: writeback_single_inode: bdi 8:0: ino=402653449 state=I_DIRTY_SYNC age=1517 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181206: writeback_single_inode: bdi 8:0: ino=268628618 state=I_DIRTY_SYNC age=1517 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181208: writeback_single_inode: bdi 8:0: ino=268628619 state=I_DIRTY_SYNC age=1517 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181210: writeback_single_inode: bdi 8:0: ino=268628620 state=I_DIRTY_SYNC age=1517 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181213: writeback_single_inode: bdi 8:0: ino=268628621 state=I_DIRTY_SYNC age=1517 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181215: writeback_single_inode: bdi 8:0: ino=268628622 state=I_DIRTY_SYNC age=1517 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181217: writeback_single_inode: bdi 8:0: ino=268628623 state=I_DIRTY_SYNC age=1517 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181220: writeback_single_inode: bdi 8:0: ino=268628624 state=I_DIRTY_SYNC age=1517 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181222: writeback_single_inode: bdi 8:0: ino=268628625 state=I_DIRTY_SYNC age=1517 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181224: writeback_single_inode: bdi 8:0: ino=268628626 state=I_DIRTY_SYNC age=1517 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181226: writeback_single_inode: bdi 8:0: ino=268628627 state=I_DIRTY_SYNC age=1517 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181229: writeback_single_inode: bdi 8:0: ino=268628628 state=I_DIRTY_SYNC age=1517 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181231: writeback_single_inode: bdi 8:0: ino=268628629 state=I_DIRTY_SYNC age=1516 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181233: writeback_single_inode: bdi 8:0: ino=268628630 state=I_DIRTY_SYNC age=1516 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181235: writeback_single_inode: bdi 8:0: ino=268628631 state=I_DIRTY_SYNC age=1516 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181238: writeback_single_inode: bdi 8:0: ino=268628632 state=I_DIRTY_SYNC age=1516 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181240: writeback_single_inode: bdi 8:0: ino=268628634 state=I_DIRTY_SYNC age=1516 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181242: writeback_single_inode: bdi 8:0: ino=268628635 state=I_DIRTY_SYNC age=1516 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181245: writeback_single_inode: bdi 8:0: ino=402653451 state=I_DIRTY_SYNC age=1516 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181247: writeback_single_inode: bdi 8:0: ino=402653452 state=I_DIRTY_SYNC age=1516 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181249: writeback_single_inode: bdi 8:0: ino=302 state=I_DIRTY_SYNC age=1516 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181252: writeback_single_inode: bdi 8:0: ino=303 state=I_DIRTY_SYNC age=1516 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181254: writeback_single_inode: bdi 8:0: ino=402653453 state=I_DIRTY_SYNC age=1516 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181257: writeback_single_inode: bdi 8:0: ino=268628636 state=I_DIRTY_SYNC age=1515 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181259: writeback_single_inode: bdi 8:0: ino=134218243 state=I_DIRTY_SYNC age=1515 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181262: writeback_single_inode: bdi 8:0: ino=134218244 state=I_DIRTY_SYNC age=1515 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181264: writeback_single_inode: bdi 8:0: ino=134218246 state=I_DIRTY_SYNC age=1515 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181266: writeback_single_inode: bdi 8:0: ino=134218247 state=I_DIRTY_SYNC age=1515 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181269: writeback_single_inode: bdi 8:0: ino=134218248 state=I_DIRTY_SYNC age=1515 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181271: writeback_single_inode: bdi 8:0: ino=134218249 state=I_DIRTY_SYNC age=1515 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181274: writeback_single_inode: bdi 8:0: ino=134218250 state=I_DIRTY_SYNC age=1515 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181277: writeback_single_inode: bdi 8:0: ino=134218251 state=I_DIRTY_SYNC age=1515 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181279: writeback_single_inode: bdi 8:0: ino=134218252 state=I_DIRTY_SYNC age=1515 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181282: writeback_single_inode: bdi 8:0: ino=134218253 state=I_DIRTY_SYNC age=1476 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181284: writeback_single_inode: bdi 8:0: ino=134218254 state=I_DIRTY_SYNC age=1476 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181287: writeback_single_inode: bdi 8:0: ino=268628638 state=I_DIRTY_SYNC age=1476 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181290: writeback_single_inode: bdi 8:0: ino=268628639 state=I_DIRTY_SYNC age=1475 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181292: writeback_single_inode: bdi 8:0: ino=268628640 state=I_DIRTY_SYNC age=1475 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181295: writeback_single_inode: bdi 8:0: ino=268628641 state=I_DIRTY_SYNC age=1475 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181298: writeback_single_inode: bdi 8:0: ino=268628642 state=I_DIRTY_SYNC age=1475 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181300: writeback_single_inode: bdi 8:0: ino=268628643 state=I_DIRTY_SYNC age=1475 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181303: writeback_single_inode: bdi 8:0: ino=268628644 state=I_DIRTY_SYNC age=1475 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181305: writeback_single_inode: bdi 8:0: ino=268628645 state=I_DIRTY_SYNC age=1475 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181307: writeback_single_inode: bdi 8:0: ino=268628646 state=I_DIRTY_SYNC age=1475 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181309: writeback_single_inode: bdi 8:0: ino=268628647 state=I_DIRTY_SYNC age=1475 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181312: writeback_single_inode: bdi 8:0: ino=268628648 state=I_DIRTY_SYNC age=1475 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181314: writeback_single_inode: bdi 8:0: ino=268628649 state=I_DIRTY_SYNC age=1475 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181316: writeback_single_inode: bdi 8:0: ino=268628650 state=I_DIRTY_SYNC age=1475 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181318: writeback_single_inode: bdi 8:0: ino=268628651 state=I_DIRTY_SYNC age=1475 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181321: writeback_single_inode: bdi 8:0: ino=134218255 state=I_DIRTY_SYNC age=1475 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181323: writeback_single_inode: bdi 8:0: ino=402653455 state=I_DIRTY_SYNC age=1475 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181326: writeback_single_inode: bdi 8:0: ino=402653456 state=I_DIRTY_SYNC age=1475 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181328: writeback_single_inode: bdi 8:0: ino=134218256 state=I_DIRTY_SYNC age=1475 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181330: writeback_single_inode: bdi 8:0: ino=134218257 state=I_DIRTY_SYNC age=1475 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181333: writeback_single_inode: bdi 8:0: ino=268628712 state=I_DIRTY_SYNC age=1475 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181335: writeback_single_inode: bdi 8:0: ino=134218258 state=I_DIRTY_SYNC age=1475 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181337: writeback_single_inode: bdi 8:0: ino=305 state=I_DIRTY_SYNC age=1475 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181340: writeback_single_inode: bdi 8:0: ino=306 state=I_DIRTY_SYNC age=1475 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181342: writeback_single_inode: bdi 8:0: ino=134218260 state=I_DIRTY_SYNC age=1475 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181344: writeback_single_inode: bdi 8:0: ino=134218261 state=I_DIRTY_SYNC age=1475 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181346: writeback_single_inode: bdi 8:0: ino=134218262 state=I_DIRTY_SYNC age=1475 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181349: writeback_single_inode: bdi 8:0: ino=134218263 state=I_DIRTY_SYNC age=1475 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181351: writeback_single_inode: bdi 8:0: ino=134218264 state=I_DIRTY_SYNC age=1475 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181353: writeback_single_inode: bdi 8:0: ino=134218265 state=I_DIRTY_SYNC age=1475 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181356: writeback_single_inode: bdi 8:0: ino=268628713 state=I_DIRTY_SYNC age=1475 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181358: writeback_single_inode: bdi 8:0: ino=134218266 state=I_DIRTY_SYNC age=1475 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181360: writeback_single_inode: bdi 8:0: ino=134218267 state=I_DIRTY_SYNC age=1475 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181362: writeback_single_inode: bdi 8:0: ino=134218268 state=I_DIRTY_SYNC age=1475 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181365: writeback_single_inode: bdi 8:0: ino=268628714 state=I_DIRTY_SYNC age=1475 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181368: writeback_single_inode: bdi 8:0: ino=134218269 state=I_DIRTY_SYNC age=1475 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181370: writeback_single_inode: bdi 8:0: ino=134218270 state=I_DIRTY_SYNC age=1475 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181372: writeback_single_inode: bdi 8:0: ino=134218271 state=I_DIRTY_SYNC age=1475 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181375: writeback_single_inode: bdi 8:0: ino=134218272 state=I_DIRTY_SYNC age=1475 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181378: writeback_single_inode: bdi 8:0: ino=134218273 state=I_DIRTY_SYNC age=1475 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181380: writeback_single_inode: bdi 8:0: ino=134218274 state=I_DIRTY_SYNC age=1475 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181383: writeback_single_inode: bdi 8:0: ino=134218275 state=I_DIRTY_SYNC age=1475 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181385: writeback_single_inode: bdi 8:0: ino=134218276 state=I_DIRTY_SYNC age=1475 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181387: writeback_single_inode: bdi 8:0: ino=134218277 state=I_DIRTY_SYNC age=1475 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181390: writeback_single_inode: bdi 8:0: ino=134218278 state=I_DIRTY_SYNC age=1475 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181393: writeback_single_inode: bdi 8:0: ino=134218279 state=I_DIRTY_SYNC age=1474 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181395: writeback_single_inode: bdi 8:0: ino=134218280 state=I_DIRTY_SYNC age=1474 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181397: writeback_single_inode: bdi 8:0: ino=134218281 state=I_DIRTY_SYNC age=1474 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181400: writeback_single_inode: bdi 8:0: ino=134218282 state=I_DIRTY_SYNC age=1474 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181402: writeback_single_inode: bdi 8:0: ino=134218283 state=I_DIRTY_SYNC age=1474 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181405: writeback_single_inode: bdi 8:0: ino=268628715 state=I_DIRTY_SYNC age=1474 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181407: writeback_single_inode: bdi 8:0: ino=134218284 state=I_DIRTY_SYNC age=1474 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181409: writeback_single_inode: bdi 8:0: ino=134218285 state=I_DIRTY_SYNC age=1474 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181411: writeback_single_inode: bdi 8:0: ino=134218286 state=I_DIRTY_SYNC age=1474 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181414: writeback_single_inode: bdi 8:0: ino=268628716 state=I_DIRTY_SYNC age=1474 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181416: writeback_single_inode: bdi 8:0: ino=134218287 state=I_DIRTY_SYNC age=1474 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181419: writeback_single_inode: bdi 8:0: ino=134218288 state=I_DIRTY_SYNC age=1474 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181421: writeback_single_inode: bdi 8:0: ino=134218289 state=I_DIRTY_SYNC age=1474 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181423: writeback_single_inode: bdi 8:0: ino=134218290 state=I_DIRTY_SYNC age=1474 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181426: writeback_single_inode: bdi 8:0: ino=134218291 state=I_DIRTY_SYNC age=1474 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181428: writeback_single_inode: bdi 8:0: ino=268628717 state=I_DIRTY_SYNC age=1474 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181430: writeback_single_inode: bdi 8:0: ino=134218292 state=I_DIRTY_SYNC age=1474 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181433: writeback_single_inode: bdi 8:0: ino=134218293 state=I_DIRTY_SYNC age=1474 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181435: writeback_single_inode: bdi 8:0: ino=268628653 state=I_DIRTY_SYNC age=1474 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181437: writeback_single_inode: bdi 8:0: ino=268628718 state=I_DIRTY_SYNC age=1474 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181440: writeback_single_inode: bdi 8:0: ino=268628654 state=I_DIRTY_SYNC age=1474 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181442: writeback_single_inode: bdi 8:0: ino=268628655 state=I_DIRTY_SYNC age=1474 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181445: writeback_single_inode: bdi 8:0: ino=268628656 state=I_DIRTY_SYNC age=1474 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181447: writeback_single_inode: bdi 8:0: ino=268628719 state=I_DIRTY_SYNC age=1474 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181449: writeback_single_inode: bdi 8:0: ino=268628657 state=I_DIRTY_SYNC age=1474 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181452: writeback_single_inode: bdi 8:0: ino=268628658 state=I_DIRTY_SYNC age=1474 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181454: writeback_single_inode: bdi 8:0: ino=268628659 state=I_DIRTY_SYNC age=1474 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181457: writeback_single_inode: bdi 8:0: ino=268628720 state=I_DIRTY_SYNC age=1474 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181459: writeback_single_inode: bdi 8:0: ino=268628660 state=I_DIRTY_SYNC age=1474 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181461: writeback_single_inode: bdi 8:0: ino=268628661 state=I_DIRTY_SYNC age=1474 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181464: writeback_single_inode: bdi 8:0: ino=268628662 state=I_DIRTY_SYNC age=1474 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181466: writeback_single_inode: bdi 8:0: ino=268628663 state=I_DIRTY_SYNC age=1474 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181468: writeback_single_inode: bdi 8:0: ino=268628664 state=I_DIRTY_SYNC age=1474 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181470: writeback_single_inode: bdi 8:0: ino=402653458 state=I_DIRTY_SYNC age=1474 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181473: writeback_single_inode: bdi 8:0: ino=402653459 state=I_DIRTY_SYNC age=1474 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181476: writeback_single_inode: bdi 8:0: ino=402653460 state=I_DIRTY_SYNC age=1474 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181478: writeback_single_inode: bdi 8:0: ino=402653461 state=I_DIRTY_SYNC age=1474 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181481: writeback_single_inode: bdi 8:0: ino=268628721 state=I_DIRTY_SYNC age=1474 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181483: writeback_single_inode: bdi 8:0: ino=402653462 state=I_DIRTY_SYNC age=1474 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181486: writeback_single_inode: bdi 8:0: ino=402653463 state=I_DIRTY_SYNC age=1474 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181488: writeback_single_inode: bdi 8:0: ino=268628665 state=I_DIRTY_SYNC age=1474 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181491: writeback_single_inode: bdi 8:0: ino=268628666 state=I_DIRTY_SYNC age=1474 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181493: writeback_single_inode: bdi 8:0: ino=268628667 state=I_DIRTY_SYNC age=1474 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181496: writeback_single_inode: bdi 8:0: ino=308 state=I_DIRTY_SYNC age=1474 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181498: writeback_single_inode: bdi 8:0: ino=309 state=I_DIRTY_SYNC age=1474 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181501: writeback_single_inode: bdi 8:0: ino=310 state=I_DIRTY_SYNC age=1474 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181503: writeback_single_inode: bdi 8:0: ino=268628722 state=I_DIRTY_SYNC age=1473 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181506: writeback_single_inode: bdi 8:0: ino=311 state=I_DIRTY_SYNC age=1473 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181508: writeback_single_inode: bdi 8:0: ino=268628668 state=I_DIRTY_SYNC age=1473 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181510: writeback_single_inode: bdi 8:0: ino=268628669 state=I_DIRTY_SYNC age=1473 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181513: writeback_single_inode: bdi 8:0: ino=268628670 state=I_DIRTY_SYNC age=1473 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181515: writeback_single_inode: bdi 8:0: ino=268628671 state=I_DIRTY_SYNC age=1473 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181517: writeback_single_inode: bdi 8:0: ino=268628704 state=I_DIRTY_SYNC age=1473 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181519: writeback_single_inode: bdi 8:0: ino=268628705 state=I_DIRTY_SYNC age=1473 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181522: writeback_single_inode: bdi 8:0: ino=268628706 state=I_DIRTY_SYNC age=1473 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181524: writeback_single_inode: bdi 8:0: ino=268628707 state=I_DIRTY_SYNC age=1473 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181526: writeback_single_inode: bdi 8:0: ino=268628723 state=I_DIRTY_SYNC age=1473 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181529: writeback_single_inode: bdi 8:0: ino=268628708 state=I_DIRTY_SYNC age=1473 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181531: writeback_single_inode: bdi 8:0: ino=268628709 state=I_DIRTY_SYNC age=1473 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181534: writeback_single_inode: bdi 8:0: ino=268628724 state=I_DIRTY_SYNC age=1473 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181536: writeback_single_inode: bdi 8:0: ino=268628725 state=I_DIRTY_SYNC age=1473 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181538: writeback_single_inode: bdi 8:0: ino=268628726 state=I_DIRTY_SYNC age=1473 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181540: writeback_single_inode: bdi 8:0: ino=268628727 state=I_DIRTY_SYNC age=1473 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181543: writeback_single_inode: bdi 8:0: ino=134218295 state=I_DIRTY_SYNC age=1473 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181545: writeback_single_inode: bdi 8:0: ino=134218296 state=I_DIRTY_SYNC age=1473 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181548: writeback_single_inode: bdi 8:0: ino=134218297 state=I_DIRTY_SYNC age=1473 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181550: writeback_single_inode: bdi 8:0: ino=134218298 state=I_DIRTY_SYNC age=1471 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181552: writeback_single_inode: bdi 8:0: ino=134218299 state=I_DIRTY_SYNC age=1471 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181555: writeback_single_inode: bdi 8:0: ino=134218300 state=I_DIRTY_SYNC age=1471 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181557: writeback_single_inode: bdi 8:0: ino=134218301 state=I_DIRTY_SYNC age=1471 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181560: writeback_single_inode: bdi 8:0: ino=134218302 state=I_DIRTY_SYNC age=1471 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181562: writeback_single_inode: bdi 8:0: ino=134218303 state=I_DIRTY_SYNC age=1471 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181565: writeback_single_inode: bdi 8:0: ino=134230304 state=I_DIRTY_SYNC age=1471 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181568: writeback_single_inode: bdi 8:0: ino=268628728 state=I_DIRTY_SYNC age=1471 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181571: writeback_single_inode: bdi 8:0: ino=268628729 state=I_DIRTY_SYNC age=1471 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181573: writeback_single_inode: bdi 8:0: ino=268628730 state=I_DIRTY_SYNC age=1470 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181576: writeback_single_inode: bdi 8:0: ino=268628731 state=I_DIRTY_SYNC age=1470 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181578: writeback_single_inode: bdi 8:0: ino=268628732 state=I_DIRTY_SYNC age=1470 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181581: writeback_single_inode: bdi 8:0: ino=268628734 state=I_DIRTY_SYNC age=1469 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181583: writeback_single_inode: bdi 8:0: ino=268628735 state=I_DIRTY_SYNC age=1469 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181586: writeback_single_inode: bdi 8:0: ino=268628736 state=I_DIRTY_SYNC age=1469 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181589: writeback_single_inode: bdi 8:0: ino=268628737 state=I_DIRTY_SYNC age=1469 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181591: writeback_single_inode: bdi 8:0: ino=268628738 state=I_DIRTY_SYNC age=1468 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181594: writeback_single_inode: bdi 8:0: ino=268628739 state=I_DIRTY_SYNC age=1467 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181597: writeback_single_inode: bdi 8:0: ino=268628740 state=I_DIRTY_SYNC age=1466 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181599: writeback_single_inode: bdi 8:0: ino=268628741 state=I_DIRTY_SYNC age=1466 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181602: writeback_single_inode: bdi 8:0: ino=268628742 state=I_DIRTY_SYNC age=1465 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181604: writeback_single_inode: bdi 8:0: ino=268628743 state=I_DIRTY_SYNC age=1465 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181607: writeback_single_inode: bdi 8:0: ino=268628744 state=I_DIRTY_SYNC age=1465 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181610: writeback_single_inode: bdi 8:0: ino=268628745 state=I_DIRTY_SYNC age=1464 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181612: writeback_single_inode: bdi 8:0: ino=268628746 state=I_DIRTY_SYNC age=1463 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181615: writeback_single_inode: bdi 8:0: ino=268628747 state=I_DIRTY_SYNC age=1463 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181618: writeback_single_inode: bdi 8:0: ino=268628748 state=I_DIRTY_SYNC age=1463 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181620: writeback_single_inode: bdi 8:0: ino=268628749 state=I_DIRTY_SYNC age=1463 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181622: writeback_single_inode: bdi 8:0: ino=268628750 state=I_DIRTY_SYNC age=1463 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181625: writeback_single_inode: bdi 8:0: ino=268628751 state=I_DIRTY_SYNC age=1462 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181627: writeback_single_inode: bdi 8:0: ino=268628752 state=I_DIRTY_SYNC age=1462 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181630: writeback_single_inode: bdi 8:0: ino=268628753 state=I_DIRTY_SYNC age=1462 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181632: writeback_single_inode: bdi 8:0: ino=268628754 state=I_DIRTY_SYNC age=1462 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181635: writeback_single_inode: bdi 8:0: ino=268628755 state=I_DIRTY_SYNC age=1462 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181637: writeback_single_inode: bdi 8:0: ino=268628756 state=I_DIRTY_SYNC age=1461 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181639: writeback_single_inode: bdi 8:0: ino=268628757 state=I_DIRTY_SYNC age=1460 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181642: writeback_single_inode: bdi 8:0: ino=268628758 state=I_DIRTY_SYNC age=1459 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181644: writeback_single_inode: bdi 8:0: ino=268628759 state=I_DIRTY_SYNC age=1459 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181647: writeback_single_inode: bdi 8:0: ino=402653465 state=I_DIRTY_SYNC age=1459 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181649: writeback_single_inode: bdi 8:0: ino=402653466 state=I_DIRTY_SYNC age=1458 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181651: writeback_single_inode: bdi 8:0: ino=134230305 state=I_DIRTY_SYNC age=1458 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181654: writeback_single_inode: bdi 8:0: ino=313 state=I_DIRTY_SYNC age=1458 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181656: writeback_single_inode: bdi 8:0: ino=314 state=I_DIRTY_SYNC age=1458 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181659: writeback_single_inode: bdi 8:0: ino=315 state=I_DIRTY_SYNC age=1458 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181661: writeback_single_inode: bdi 8:0: ino=316 state=I_DIRTY_SYNC age=1458 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181663: writeback_single_inode: bdi 8:0: ino=317 state=I_DIRTY_SYNC age=1458 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181666: writeback_single_inode: bdi 8:0: ino=318 state=I_DIRTY_SYNC age=1458 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181668: writeback_single_inode: bdi 8:0: ino=319 state=I_DIRTY_SYNC age=1457 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181670: writeback_single_inode: bdi 8:0: ino=2101728 state=I_DIRTY_SYNC age=1457 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181673: writeback_single_inode: bdi 8:0: ino=2101729 state=I_DIRTY_SYNC age=1457 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181675: writeback_single_inode: bdi 8:0: ino=2101730 state=I_DIRTY_SYNC age=1457 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181677: writeback_single_inode: bdi 8:0: ino=134230306 state=I_DIRTY_SYNC age=1457 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181680: writeback_single_inode: bdi 8:0: ino=134230307 state=I_DIRTY_SYNC age=1456 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181682: writeback_single_inode: bdi 8:0: ino=134230308 state=I_DIRTY_SYNC age=1456 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181685: writeback_single_inode: bdi 8:0: ino=134230309 state=I_DIRTY_SYNC age=1455 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181687: writeback_single_inode: bdi 8:0: ino=134230310 state=I_DIRTY_SYNC age=1455 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181689: writeback_single_inode: bdi 8:0: ino=134230312 state=I_DIRTY_SYNC age=1455 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181692: writeback_single_inode: bdi 8:0: ino=134230313 state=I_DIRTY_SYNC age=1455 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181695: writeback_single_inode: bdi 8:0: ino=134230314 state=I_DIRTY_SYNC age=1455 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181697: writeback_single_inode: bdi 8:0: ino=134230315 state=I_DIRTY_SYNC age=1454 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181699: writeback_single_inode: bdi 8:0: ino=134230316 state=I_DIRTY_SYNC age=1454 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181702: writeback_single_inode: bdi 8:0: ino=134230317 state=I_DIRTY_SYNC age=1454 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181705: writeback_single_inode: bdi 8:0: ino=134230318 state=I_DIRTY_SYNC age=1454 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181708: writeback_single_inode: bdi 8:0: ino=134230319 state=I_DIRTY_SYNC age=1454 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181710: writeback_single_inode: bdi 8:0: ino=134230320 state=I_DIRTY_SYNC age=1454 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181713: writeback_single_inode: bdi 8:0: ino=134230321 state=I_DIRTY_SYNC age=1454 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181715: writeback_single_inode: bdi 8:0: ino=134230322 state=I_DIRTY_SYNC age=1454 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181718: writeback_single_inode: bdi 8:0: ino=134230323 state=I_DIRTY_SYNC age=1453 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181720: writeback_single_inode: bdi 8:0: ino=134230324 state=I_DIRTY_SYNC age=1453 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181723: writeback_single_inode: bdi 8:0: ino=134230325 state=I_DIRTY_SYNC age=1453 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181725: writeback_single_inode: bdi 8:0: ino=134230326 state=I_DIRTY_SYNC age=1453 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181727: writeback_single_inode: bdi 8:0: ino=134230327 state=I_DIRTY_SYNC age=1453 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181730: writeback_single_inode: bdi 8:0: ino=134230328 state=I_DIRTY_SYNC age=1453 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181732: writeback_single_inode: bdi 8:0: ino=134230329 state=I_DIRTY_SYNC age=1453 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181735: writeback_single_inode: bdi 8:0: ino=134230330 state=I_DIRTY_SYNC age=1453 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181737: writeback_single_inode: bdi 8:0: ino=134230331 state=I_DIRTY_SYNC age=1452 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181740: writeback_single_inode: bdi 8:0: ino=134230332 state=I_DIRTY_SYNC age=1452 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181742: writeback_single_inode: bdi 8:0: ino=134230333 state=I_DIRTY_SYNC age=1452 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181744: writeback_single_inode: bdi 8:0: ino=134230334 state=I_DIRTY_SYNC age=1452 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181747: writeback_single_inode: bdi 8:0: ino=134230335 state=I_DIRTY_SYNC age=1452 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181749: writeback_single_inode: bdi 8:0: ino=134230336 state=I_DIRTY_SYNC age=1452 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181751: writeback_single_inode: bdi 8:0: ino=134230337 state=I_DIRTY_SYNC age=1452 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181754: writeback_single_inode: bdi 8:0: ino=134230338 state=I_DIRTY_SYNC age=1452 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181756: writeback_single_inode: bdi 8:0: ino=134230339 state=I_DIRTY_SYNC age=1452 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181758: writeback_single_inode: bdi 8:0: ino=134230340 state=I_DIRTY_SYNC age=1451 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181761: writeback_single_inode: bdi 8:0: ino=134230341 state=I_DIRTY_SYNC age=1451 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181763: writeback_single_inode: bdi 8:0: ino=134230342 state=I_DIRTY_SYNC age=1451 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181765: writeback_single_inode: bdi 8:0: ino=134230343 state=I_DIRTY_SYNC age=1451 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181768: writeback_single_inode: bdi 8:0: ino=134230344 state=I_DIRTY_SYNC age=1451 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181770: writeback_single_inode: bdi 8:0: ino=134230345 state=I_DIRTY_SYNC age=1451 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181772: writeback_single_inode: bdi 8:0: ino=134230346 state=I_DIRTY_SYNC age=1451 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181775: writeback_single_inode: bdi 8:0: ino=134230347 state=I_DIRTY_SYNC age=1451 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181777: writeback_single_inode: bdi 8:0: ino=134230348 state=I_DIRTY_SYNC age=1451 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181779: writeback_single_inode: bdi 8:0: ino=134230349 state=I_DIRTY_SYNC age=1450 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181781: writeback_single_inode: bdi 8:0: ino=134230350 state=I_DIRTY_SYNC age=1450 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181784: writeback_single_inode: bdi 8:0: ino=134230351 state=I_DIRTY_SYNC age=1428 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181786: writeback_single_inode: bdi 8:0: ino=134230352 state=I_DIRTY_SYNC age=1428 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181788: writeback_single_inode: bdi 8:0: ino=134230353 state=I_DIRTY_SYNC age=1427 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181791: writeback_single_inode: bdi 8:0: ino=134230354 state=I_DIRTY_SYNC age=1427 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181793: writeback_single_inode: bdi 8:0: ino=134230355 state=I_DIRTY_SYNC age=1427 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181795: writeback_single_inode: bdi 8:0: ino=134230356 state=I_DIRTY_SYNC age=1427 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181798: writeback_single_inode: bdi 8:0: ino=134230357 state=I_DIRTY_SYNC age=1427 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181800: writeback_single_inode: bdi 8:0: ino=134230358 state=I_DIRTY_SYNC age=1427 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181802: writeback_single_inode: bdi 8:0: ino=134230359 state=I_DIRTY_SYNC age=1427 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181804: writeback_single_inode: bdi 8:0: ino=134230360 state=I_DIRTY_SYNC age=1426 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181807: writeback_single_inode: bdi 8:0: ino=134230361 state=I_DIRTY_SYNC age=1426 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181809: writeback_single_inode: bdi 8:0: ino=134230362 state=I_DIRTY_SYNC age=1426 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181811: writeback_single_inode: bdi 8:0: ino=134230363 state=I_DIRTY_SYNC age=1426 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181814: writeback_single_inode: bdi 8:0: ino=134230364 state=I_DIRTY_SYNC age=1426 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181816: writeback_single_inode: bdi 8:0: ino=134230365 state=I_DIRTY_SYNC age=1426 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181818: writeback_single_inode: bdi 8:0: ino=134230366 state=I_DIRTY_SYNC age=1426 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181821: writeback_single_inode: bdi 8:0: ino=134230367 state=I_DIRTY_SYNC age=1426 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181823: writeback_single_inode: bdi 8:0: ino=134230368 state=I_DIRTY_SYNC age=1425 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181825: writeback_single_inode: bdi 8:0: ino=134230369 state=I_DIRTY_SYNC age=1425 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181827: writeback_single_inode: bdi 8:0: ino=134230370 state=I_DIRTY_SYNC age=1425 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181830: writeback_single_inode: bdi 8:0: ino=134230371 state=I_DIRTY_SYNC age=1425 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181832: writeback_single_inode: bdi 8:0: ino=134230372 state=I_DIRTY_SYNC age=1425 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181834: writeback_single_inode: bdi 8:0: ino=134230373 state=I_DIRTY_SYNC age=1425 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181837: writeback_single_inode: bdi 8:0: ino=134230374 state=I_DIRTY_SYNC age=1425 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181839: writeback_single_inode: bdi 8:0: ino=134230375 state=I_DIRTY_SYNC age=1425 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181841: writeback_single_inode: bdi 8:0: ino=134230376 state=I_DIRTY_SYNC age=1425 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181844: writeback_single_inode: bdi 8:0: ino=134230377 state=I_DIRTY_SYNC age=1424 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181846: writeback_single_inode: bdi 8:0: ino=134230378 state=I_DIRTY_SYNC age=1424 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181848: writeback_single_inode: bdi 8:0: ino=134230379 state=I_DIRTY_SYNC age=1424 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181850: writeback_single_inode: bdi 8:0: ino=134230380 state=I_DIRTY_SYNC age=1424 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181853: writeback_single_inode: bdi 8:0: ino=134230381 state=I_DIRTY_SYNC age=1424 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181855: writeback_single_inode: bdi 8:0: ino=134230382 state=I_DIRTY_SYNC age=1424 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181858: writeback_single_inode: bdi 8:0: ino=134230383 state=I_DIRTY_SYNC age=1424 index=0 to_write=1024 wrote=0
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              dd-2975  [000]  2468.181920: writeback_single_inode: bdi 8:0: ino=402659598 state=I_DIRTY_SYNC age=1420 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181922: writeback_single_inode: bdi 8:0: ino=268628761 state=I_DIRTY_SYNC age=1420 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181925: writeback_single_inode: bdi 8:0: ino=268628762 state=I_DIRTY_SYNC age=1420 index=0 to_write=1024 wrote=0
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              dd-2975  [000]  2468.181930: writeback_single_inode: bdi 8:0: ino=268628764 state=I_DIRTY_SYNC age=1420 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181933: writeback_single_inode: bdi 8:0: ino=268628765 state=I_DIRTY_SYNC age=1420 index=0 to_write=1024 wrote=0
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              dd-2975  [000]  2468.181940: writeback_single_inode: bdi 8:0: ino=268628767 state=I_DIRTY_SYNC age=1419 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181943: writeback_single_inode: bdi 8:0: ino=268633696 state=I_DIRTY_SYNC age=1419 index=0 to_write=1024 wrote=0
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              dd-2975  [000]  2468.181951: writeback_single_inode: bdi 8:0: ino=268633699 state=I_DIRTY_SYNC age=1419 index=0 to_write=1024 wrote=0
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              dd-2975  [000]  2468.181956: writeback_single_inode: bdi 8:0: ino=134230392 state=I_DIRTY_SYNC age=1419 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181958: writeback_single_inode: bdi 8:0: ino=134230393 state=I_DIRTY_SYNC age=1418 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181961: writeback_single_inode: bdi 8:0: ino=268633702 state=I_DIRTY_SYNC age=1418 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181963: writeback_single_inode: bdi 8:0: ino=268633703 state=I_DIRTY_SYNC age=1418 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181966: writeback_single_inode: bdi 8:0: ino=268633704 state=I_DIRTY_SYNC age=1418 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181969: writeback_single_inode: bdi 8:0: ino=268633705 state=I_DIRTY_SYNC age=1418 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181971: writeback_single_inode: bdi 8:0: ino=268633706 state=I_DIRTY_SYNC age=1418 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181974: writeback_single_inode: bdi 8:0: ino=268633707 state=I_DIRTY_SYNC age=1418 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181976: writeback_single_inode: bdi 8:0: ino=268633708 state=I_DIRTY_SYNC age=1418 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181979: writeback_single_inode: bdi 8:0: ino=268633709 state=I_DIRTY_SYNC age=1418 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181981: writeback_single_inode: bdi 8:0: ino=268633710 state=I_DIRTY_SYNC age=1417 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181984: writeback_single_inode: bdi 8:0: ino=268633711 state=I_DIRTY_SYNC age=1417 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181991: writeback_single_inode: bdi 8:0: ino=268633712 state=I_DIRTY_SYNC age=1418 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181994: writeback_single_inode: bdi 8:0: ino=268633713 state=I_DIRTY_SYNC age=1418 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181997: writeback_single_inode: bdi 8:0: ino=268633714 state=I_DIRTY_SYNC age=1418 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.181999: writeback_single_inode: bdi 8:0: ino=268633715 state=I_DIRTY_SYNC age=1418 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.182002: writeback_single_inode: bdi 8:0: ino=402659600 state=I_DIRTY_SYNC age=1417 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.182005: writeback_single_inode: bdi 8:0: ino=402659601 state=I_DIRTY_SYNC age=1417 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.182007: writeback_single_inode: bdi 8:0: ino=402659602 state=I_DIRTY_SYNC age=1417 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.182010: writeback_single_inode: bdi 8:0: ino=402659603 state=I_DIRTY_SYNC age=1417 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.182013: writeback_single_inode: bdi 8:0: ino=402659604 state=I_DIRTY_SYNC age=1417 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.182015: writeback_single_inode: bdi 8:0: ino=402659605 state=I_DIRTY_SYNC age=1417 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.182018: writeback_single_inode: bdi 8:0: ino=402659606 state=I_DIRTY_SYNC age=1416 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.182021: writeback_single_inode: bdi 8:0: ino=2101734 state=I_DIRTY_SYNC age=1416 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.182024: writeback_single_inode: bdi 8:0: ino=2101735 state=I_DIRTY_SYNC age=1416 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.182027: writeback_single_inode: bdi 8:0: ino=2101736 state=I_DIRTY_SYNC age=1416 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.182029: writeback_single_inode: bdi 8:0: ino=2101737 state=I_DIRTY_SYNC age=1416 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.182032: writeback_single_inode: bdi 8:0: ino=2101738 state=I_DIRTY_SYNC age=1416 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.182035: writeback_single_inode: bdi 8:0: ino=134230394 state=I_DIRTY_SYNC age=1415 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.182037: writeback_single_inode: bdi 8:0: ino=134230395 state=I_DIRTY_SYNC age=1415 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.182040: writeback_single_inode: bdi 8:0: ino=134230397 state=I_DIRTY_SYNC age=1415 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.182043: writeback_single_inode: bdi 8:0: ino=134230398 state=I_DIRTY_SYNC age=1415 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.182045: writeback_single_inode: bdi 8:0: ino=134230399 state=I_DIRTY_SYNC age=1415 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.182048: writeback_single_inode: bdi 8:0: ino=134230400 state=I_DIRTY_SYNC age=1414 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.182051: writeback_single_inode: bdi 8:0: ino=134230401 state=I_DIRTY_SYNC age=1414 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.182054: writeback_single_inode: bdi 8:0: ino=134230402 state=I_DIRTY_SYNC age=1414 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.182056: writeback_single_inode: bdi 8:0: ino=134230403 state=I_DIRTY_SYNC age=1414 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.182059: writeback_single_inode: bdi 8:0: ino=134230404 state=I_DIRTY_SYNC age=1414 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.182062: writeback_single_inode: bdi 8:0: ino=134230405 state=I_DIRTY_SYNC age=1413 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.182064: writeback_single_inode: bdi 8:0: ino=134230406 state=I_DIRTY_SYNC age=1413 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.182067: writeback_single_inode: bdi 8:0: ino=134230407 state=I_DIRTY_SYNC age=1413 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.182070: writeback_single_inode: bdi 8:0: ino=134230408 state=I_DIRTY_SYNC age=1413 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.182072: writeback_single_inode: bdi 8:0: ino=134230409 state=I_DIRTY_SYNC age=1413 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.182075: writeback_single_inode: bdi 8:0: ino=134230410 state=I_DIRTY_SYNC age=1412 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.182077: writeback_single_inode: bdi 8:0: ino=134230411 state=I_DIRTY_SYNC age=1412 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.182080: writeback_single_inode: bdi 8:0: ino=134230412 state=I_DIRTY_SYNC age=1412 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.182083: writeback_single_inode: bdi 8:0: ino=134230413 state=I_DIRTY_SYNC age=1412 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.182085: writeback_single_inode: bdi 8:0: ino=134230414 state=I_DIRTY_SYNC age=1411 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.182088: writeback_single_inode: bdi 8:0: ino=134230415 state=I_DIRTY_SYNC age=1411 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.182091: writeback_single_inode: bdi 8:0: ino=134230416 state=I_DIRTY_SYNC age=1411 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.182093: writeback_single_inode: bdi 8:0: ino=134230417 state=I_DIRTY_SYNC age=1411 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.182096: writeback_single_inode: bdi 8:0: ino=134230418 state=I_DIRTY_SYNC age=1410 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.182098: writeback_single_inode: bdi 8:0: ino=134230419 state=I_DIRTY_SYNC age=1410 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.182101: writeback_single_inode: bdi 8:0: ino=134230420 state=I_DIRTY_SYNC age=1410 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.182104: writeback_single_inode: bdi 8:0: ino=134230421 state=I_DIRTY_SYNC age=1410 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.182106: writeback_single_inode: bdi 8:0: ino=134230422 state=I_DIRTY_SYNC age=1410 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.182109: writeback_single_inode: bdi 8:0: ino=134230423 state=I_DIRTY_SYNC age=1409 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.182111: writeback_single_inode: bdi 8:0: ino=134230424 state=I_DIRTY_SYNC age=1409 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.182114: writeback_single_inode: bdi 8:0: ino=134230425 state=I_DIRTY_SYNC age=1409 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.182117: writeback_single_inode: bdi 8:0: ino=268633717 state=I_DIRTY_SYNC age=1409 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.182119: writeback_single_inode: bdi 8:0: ino=268633718 state=I_DIRTY_SYNC age=1409 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.182122: writeback_single_inode: bdi 8:0: ino=268633719 state=I_DIRTY_SYNC age=1409 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.182124: writeback_single_inode: bdi 8:0: ino=268633720 state=I_DIRTY_SYNC age=1408 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.182127: writeback_single_inode: bdi 8:0: ino=268633721 state=I_DIRTY_SYNC age=1408 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.182130: writeback_single_inode: bdi 8:0: ino=134230426 state=I_DIRTY_SYNC age=1408 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.182132: writeback_single_inode: bdi 8:0: ino=134230427 state=I_DIRTY_SYNC age=1408 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.182135: writeback_single_inode: bdi 8:0: ino=134230428 state=I_DIRTY_SYNC age=1407 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.182137: writeback_single_inode: bdi 8:0: ino=402659608 state=I_DIRTY_SYNC age=1407 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.182140: writeback_single_inode: bdi 8:0: ino=402659609 state=I_DIRTY_SYNC age=1407 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.182143: writeback_single_inode: bdi 8:0: ino=402659610 state=I_DIRTY_SYNC age=1407 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.182145: writeback_single_inode: bdi 8:0: ino=402659611 state=I_DIRTY_SYNC age=1407 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.182148: writeback_single_inode: bdi 8:0: ino=402659612 state=I_DIRTY_SYNC age=1407 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.182150: writeback_single_inode: bdi 8:0: ino=402659613 state=I_DIRTY_SYNC age=1406 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.182153: writeback_single_inode: bdi 8:0: ino=402659614 state=I_DIRTY_SYNC age=1406 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.182155: writeback_single_inode: bdi 8:0: ino=402659615 state=I_DIRTY_SYNC age=1405 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.182158: writeback_single_inode: bdi 8:0: ino=402659616 state=I_DIRTY_SYNC age=1405 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.182160: writeback_single_inode: bdi 8:0: ino=402659617 state=I_DIRTY_SYNC age=1405 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.182163: writeback_single_inode: bdi 8:0: ino=402659618 state=I_DIRTY_SYNC age=1405 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.182165: writeback_single_inode: bdi 8:0: ino=402659619 state=I_DIRTY_SYNC age=1404 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.182167: writeback_single_inode: bdi 8:0: ino=402659620 state=I_DIRTY_SYNC age=1381 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.182170: writeback_single_inode: bdi 8:0: ino=402659621 state=I_DIRTY_SYNC age=1381 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.182172: writeback_single_inode: bdi 8:0: ino=402659622 state=I_DIRTY_SYNC age=1381 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.182174: writeback_single_inode: bdi 8:0: ino=402659623 state=I_DIRTY_SYNC age=1380 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.182176: writeback_single_inode: bdi 8:0: ino=402659624 state=I_DIRTY_SYNC age=1380 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.182179: writeback_single_inode: bdi 8:0: ino=402659625 state=I_DIRTY_SYNC age=1380 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.182181: writeback_single_inode: bdi 8:0: ino=402659626 state=I_DIRTY_SYNC age=1380 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.182183: writeback_single_inode: bdi 8:0: ino=402659627 state=I_DIRTY_SYNC age=1380 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.182185: writeback_single_inode: bdi 8:0: ino=402659628 state=I_DIRTY_SYNC age=1380 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.182188: writeback_single_inode: bdi 8:0: ino=402659629 state=I_DIRTY_SYNC age=1380 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.182190: writeback_single_inode: bdi 8:0: ino=402659630 state=I_DIRTY_SYNC age=1379 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.182192: writeback_single_inode: bdi 8:0: ino=402659631 state=I_DIRTY_SYNC age=1379 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.182194: writeback_single_inode: bdi 8:0: ino=402659632 state=I_DIRTY_SYNC age=1379 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.182197: writeback_single_inode: bdi 8:0: ino=2101740 state=I_DIRTY_SYNC age=1379 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.182199: writeback_single_inode: bdi 8:0: ino=2101741 state=I_DIRTY_SYNC age=1378 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.182201: writeback_single_inode: bdi 8:0: ino=2101742 state=I_DIRTY_SYNC age=1378 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.182203: writeback_single_inode: bdi 8:0: ino=2101743 state=I_DIRTY_SYNC age=1378 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.182206: writeback_single_inode: bdi 8:0: ino=2101744 state=I_DIRTY_SYNC age=1377 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.182208: writeback_single_inode: bdi 8:0: ino=134230429 state=I_DIRTY_SYNC age=1377 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.182210: writeback_single_inode: bdi 8:0: ino=134230431 state=I_DIRTY_SYNC age=1377 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.182213: writeback_single_inode: bdi 8:0: ino=134230464 state=I_DIRTY_SYNC age=1377 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.182215: writeback_single_inode: bdi 8:0: ino=134230465 state=I_DIRTY_SYNC age=1377 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.182217: writeback_single_inode: bdi 8:0: ino=134230466 state=I_DIRTY_SYNC age=1376 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.182220: writeback_single_inode: bdi 8:0: ino=134230467 state=I_DIRTY_SYNC age=1376 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.182222: writeback_single_inode: bdi 8:0: ino=134230468 state=I_DIRTY_SYNC age=1375 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.182224: writeback_single_inode: bdi 8:0: ino=268633723 state=I_DIRTY_SYNC age=1375 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.182227: writeback_single_inode: bdi 8:0: ino=268633724 state=I_DIRTY_SYNC age=1375 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.182229: writeback_single_inode: bdi 8:0: ino=134230469 state=I_DIRTY_SYNC age=1374 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.182231: writeback_single_inode: bdi 8:0: ino=134230470 state=I_DIRTY_SYNC age=1374 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.182234: writeback_single_inode: bdi 8:0: ino=134230471 state=I_DIRTY_SYNC age=1373 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.182236: writeback_single_inode: bdi 8:0: ino=134230472 state=I_DIRTY_SYNC age=1371 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.182239: writeback_single_inode: bdi 8:0: ino=134230473 state=I_DIRTY_SYNC age=1371 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.182241: writeback_single_inode: bdi 8:0: ino=134230474 state=I_DIRTY_SYNC age=1370 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.182243: writeback_single_inode: bdi 8:0: ino=134230475 state=I_DIRTY_SYNC age=1369 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.182245: writeback_single_inode: bdi 8:0: ino=134230476 state=I_DIRTY_SYNC age=1369 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.182248: writeback_single_inode: bdi 8:0: ino=402659634 state=I_DIRTY_SYNC age=1368 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.182250: writeback_single_inode: bdi 8:0: ino=402659635 state=I_DIRTY_SYNC age=1368 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.182253: writeback_single_inode: bdi 8:0: ino=134230477 state=I_DIRTY_SYNC age=1367 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.182255: writeback_single_inode: bdi 8:0: ino=134230478 state=I_DIRTY_SYNC age=1367 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.182257: writeback_single_inode: bdi 8:0: ino=134230479 state=I_DIRTY_SYNC age=1366 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.182260: writeback_single_inode: bdi 8:0: ino=2101746 state=I_DIRTY_SYNC age=1366 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.182262: writeback_single_inode: bdi 8:0: ino=2101747 state=I_DIRTY_SYNC age=1366 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.182264: writeback_single_inode: bdi 8:0: ino=2101748 state=I_DIRTY_SYNC age=1365 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.182267: writeback_single_inode: bdi 8:0: ino=2101749 state=I_DIRTY_SYNC age=1365 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.182269: writeback_single_inode: bdi 8:0: ino=2101750 state=I_DIRTY_SYNC age=1365 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.182271: writeback_single_inode: bdi 8:0: ino=2101751 state=I_DIRTY_SYNC age=1365 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.182274: writeback_single_inode: bdi 8:0: ino=2101752 state=I_DIRTY_SYNC age=1365 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.182276: writeback_single_inode: bdi 8:0: ino=134230481 state=I_DIRTY_SYNC age=1364 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.182278: writeback_single_inode: bdi 8:0: ino=134230482 state=I_DIRTY_SYNC age=1364 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.182281: writeback_single_inode: bdi 8:0: ino=134230483 state=I_DIRTY_SYNC age=1364 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.182284: writeback_single_inode: bdi 8:0: ino=134230484 state=I_DIRTY_SYNC age=1363 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.182286: writeback_single_inode: bdi 8:0: ino=134230485 state=I_DIRTY_SYNC age=1363 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.182289: writeback_single_inode: bdi 8:0: ino=134230486 state=I_DIRTY_SYNC age=1363 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.182292: writeback_single_inode: bdi 8:0: ino=134230487 state=I_DIRTY_SYNC age=1363 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.182294: writeback_single_inode: bdi 8:0: ino=134230488 state=I_DIRTY_SYNC age=1362 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.182297: writeback_single_inode: bdi 8:0: ino=134230489 state=I_DIRTY_SYNC age=1362 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.182300: writeback_single_inode: bdi 8:0: ino=134230490 state=I_DIRTY_SYNC age=1362 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.182302: writeback_single_inode: bdi 8:0: ino=134230491 state=I_DIRTY_SYNC age=1361 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.182305: writeback_single_inode: bdi 8:0: ino=134230492 state=I_DIRTY_SYNC age=1361 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.182308: writeback_single_inode: bdi 8:0: ino=134230493 state=I_DIRTY_SYNC age=1361 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.182310: writeback_single_inode: bdi 8:0: ino=268633726 state=I_DIRTY_SYNC age=1361 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.182313: writeback_single_inode: bdi 8:0: ino=268633727 state=I_DIRTY_SYNC age=1360 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.182315: writeback_single_inode: bdi 8:0: ino=402659637 state=I_DIRTY_SYNC age=1360 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.182318: writeback_single_inode: bdi 8:0: ino=402659638 state=I_DIRTY_SYNC age=1360 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.182320: writeback_single_inode: bdi 8:0: ino=402659639 state=I_DIRTY_SYNC age=1360 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.182322: writeback_single_inode: bdi 8:0: ino=268628710 state=I_DIRTY_SYNC age=720 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.182324: writeback_single_inode: bdi 8:0: ino=268628711 state=I_DIRTY_SYNC age=713 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.182327: writeback_single_inode: bdi 8:0: ino=402659641 state=I_DIRTY_SYNC age=712 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.182329: writeback_single_inode: bdi 8:0: ino=134230494 state=I_DIRTY_SYNC age=712 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.182331: writeback_single_inode: bdi 8:0: ino=134230495 state=I_DIRTY_SYNC age=712 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.182334: writeback_single_inode: bdi 8:0: ino=134230496 state=I_DIRTY_SYNC age=712 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.182336: writeback_single_inode: bdi 8:0: ino=134230497 state=I_DIRTY_SYNC age=712 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.182339: writeback_single_inode: bdi 8:0: ino=134230498 state=I_DIRTY_SYNC age=711 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.182341: writeback_single_inode: bdi 8:0: ino=2101754 state=I_DIRTY_SYNC age=711 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.182343: writeback_single_inode: bdi 8:0: ino=2101755 state=I_DIRTY_SYNC age=711 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.182346: writeback_single_inode: bdi 8:0: ino=2101756 state=I_DIRTY_SYNC age=711 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.182348: writeback_single_inode: bdi 8:0: ino=134230499 state=I_DIRTY_SYNC age=710 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.182351: writeback_single_inode: bdi 8:0: ino=134230501 state=I_DIRTY_SYNC age=709 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.182353: writeback_single_inode: bdi 8:0: ino=134230502 state=I_DIRTY_SYNC age=709 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.182355: writeback_single_inode: bdi 8:0: ino=134230503 state=I_DIRTY_SYNC age=709 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.182358: writeback_single_inode: bdi 8:0: ino=134230504 state=I_DIRTY_SYNC age=708 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.182361: writeback_single_inode: bdi 8:0: ino=134230505 state=I_DIRTY_SYNC age=706 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.182363: writeback_single_inode: bdi 8:0: ino=134230506 state=I_DIRTY_SYNC age=706 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.182366: writeback_single_inode: bdi 8:0: ino=268633729 state=I_DIRTY_SYNC age=706 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.182368: writeback_single_inode: bdi 8:0: ino=268633730 state=I_DIRTY_SYNC age=706 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.182371: writeback_single_inode: bdi 8:0: ino=402659643 state=I_DIRTY_SYNC age=706 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.182373: writeback_single_inode: bdi 8:0: ino=402659644 state=I_DIRTY_SYNC age=706 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.182376: writeback_single_inode: bdi 8:0: ino=402659645 state=I_DIRTY_SYNC age=706 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.182379: writeback_single_inode: bdi 8:0: ino=402659646 state=I_DIRTY_SYNC age=706 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.182381: writeback_single_inode: bdi 8:0: ino=402659647 state=I_DIRTY_SYNC age=706 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.182384: writeback_single_inode: bdi 8:0: ino=402659640 state=I_DIRTY_SYNC age=129 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183043: writeback_queue_io: bdi 8:0: older=0 age=-1 enqueue=1031
              dd-2975  [000]  2468.183046: writeback_single_inode: bdi 8:0: ino=131 state=I_DIRTY_SYNC|I_DIRTY_DATASYNC|I_DIRTY_PAGES|I_SYNC age=1814 index=28700 to_write=1024 wrote=0
              dd-2975  [000]  2468.183052: writeback_single_inode: bdi 8:0: ino=133 state=I_DIRTY_SYNC age=1764 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183054: writeback_single_inode: bdi 8:0: ino=134 state=I_DIRTY_SYNC age=1764 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183057: writeback_single_inode: bdi 8:0: ino=135 state=I_DIRTY_SYNC age=1764 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183059: writeback_single_inode: bdi 8:0: ino=136 state=I_DIRTY_SYNC age=1763 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183061: writeback_single_inode: bdi 8:0: ino=134217857 state=I_DIRTY_SYNC age=1746 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183063: writeback_single_inode: bdi 8:0: ino=134217858 state=I_DIRTY_SYNC age=1746 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183066: writeback_single_inode: bdi 8:0: ino=268628417 state=I_DIRTY_SYNC age=1736 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183068: writeback_single_inode: bdi 8:0: ino=402653313 state=I_DIRTY_SYNC age=1723 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183070: writeback_single_inode: bdi 8:0: ino=402653314 state=I_DIRTY_SYNC age=1722 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183072: writeback_single_inode: bdi 8:0: ino=402653315 state=I_DIRTY_SYNC age=1722 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183074: writeback_single_inode: bdi 8:0: ino=402653316 state=I_DIRTY_SYNC age=1722 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183077: writeback_single_inode: bdi 8:0: ino=138 state=I_DIRTY_SYNC age=1722 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183079: writeback_single_inode: bdi 8:0: ino=139 state=I_DIRTY_SYNC age=1722 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183081: writeback_single_inode: bdi 8:0: ino=140 state=I_DIRTY_SYNC age=1722 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183083: writeback_single_inode: bdi 8:0: ino=141 state=I_DIRTY_SYNC age=1722 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183086: writeback_single_inode: bdi 8:0: ino=134217860 state=I_DIRTY_SYNC age=1722 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183088: writeback_single_inode: bdi 8:0: ino=134217861 state=I_DIRTY_SYNC age=1722 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183090: writeback_single_inode: bdi 8:0: ino=134217862 state=I_DIRTY_SYNC age=1722 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183092: writeback_single_inode: bdi 8:0: ino=134217863 state=I_DIRTY_SYNC age=1722 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183095: writeback_single_inode: bdi 8:0: ino=134217864 state=I_DIRTY_SYNC age=1721 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183097: writeback_single_inode: bdi 8:0: ino=134217865 state=I_DIRTY_SYNC age=1721 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183099: writeback_single_inode: bdi 8:0: ino=134217866 state=I_DIRTY_SYNC age=1721 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183101: writeback_single_inode: bdi 8:0: ino=134217867 state=I_DIRTY_SYNC age=1721 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183103: writeback_single_inode: bdi 8:0: ino=134217868 state=I_DIRTY_SYNC age=1721 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183106: writeback_single_inode: bdi 8:0: ino=134217869 state=I_DIRTY_SYNC age=1721 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183108: writeback_single_inode: bdi 8:0: ino=268628419 state=I_DIRTY_SYNC age=1721 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183110: writeback_single_inode: bdi 8:0: ino=268628420 state=I_DIRTY_SYNC age=1721 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183112: writeback_single_inode: bdi 8:0: ino=268628421 state=I_DIRTY_SYNC age=1721 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183114: writeback_single_inode: bdi 8:0: ino=268628422 state=I_DIRTY_SYNC age=1721 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183117: writeback_single_inode: bdi 8:0: ino=268628423 state=I_DIRTY_SYNC age=1721 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183119: writeback_single_inode: bdi 8:0: ino=268628424 state=I_DIRTY_SYNC age=1721 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183121: writeback_single_inode: bdi 8:0: ino=268628425 state=I_DIRTY_SYNC age=1721 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183123: writeback_single_inode: bdi 8:0: ino=268628426 state=I_DIRTY_SYNC age=1720 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183126: writeback_single_inode: bdi 8:0: ino=268628427 state=I_DIRTY_SYNC age=1720 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183128: writeback_single_inode: bdi 8:0: ino=268628428 state=I_DIRTY_SYNC age=1720 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183130: writeback_single_inode: bdi 8:0: ino=268628429 state=I_DIRTY_SYNC age=1720 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183132: writeback_single_inode: bdi 8:0: ino=268628430 state=I_DIRTY_SYNC age=1720 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183135: writeback_single_inode: bdi 8:0: ino=268628431 state=I_DIRTY_SYNC age=1720 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183137: writeback_single_inode: bdi 8:0: ino=268628432 state=I_DIRTY_SYNC age=1720 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183139: writeback_single_inode: bdi 8:0: ino=268628433 state=I_DIRTY_SYNC age=1720 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183141: writeback_single_inode: bdi 8:0: ino=268628434 state=I_DIRTY_SYNC age=1720 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183144: writeback_single_inode: bdi 8:0: ino=268628435 state=I_DIRTY_SYNC age=1720 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183146: writeback_single_inode: bdi 8:0: ino=268628436 state=I_DIRTY_SYNC age=1720 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183148: writeback_single_inode: bdi 8:0: ino=268628437 state=I_DIRTY_SYNC age=1720 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183150: writeback_single_inode: bdi 8:0: ino=268628438 state=I_DIRTY_SYNC age=1720 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183152: writeback_single_inode: bdi 8:0: ino=268628439 state=I_DIRTY_SYNC age=1719 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183155: writeback_single_inode: bdi 8:0: ino=268628440 state=I_DIRTY_SYNC age=1719 index=0 to_write=1024 wrote=0
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              dd-2975  [000]  2468.183279: writeback_single_inode: bdi 8:0: ino=402653321 state=I_DIRTY_SYNC age=1713 index=0 to_write=1024 wrote=0
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              dd-2975  [000]  2468.183283: writeback_single_inode: bdi 8:0: ino=402653323 state=I_DIRTY_SYNC age=1713 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183285: writeback_single_inode: bdi 8:0: ino=402653324 state=I_DIRTY_SYNC age=1713 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183287: writeback_single_inode: bdi 8:0: ino=402653325 state=I_DIRTY_SYNC age=1713 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183290: writeback_single_inode: bdi 8:0: ino=143 state=I_DIRTY_SYNC age=1712 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183292: writeback_single_inode: bdi 8:0: ino=144 state=I_DIRTY_SYNC age=1712 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183294: writeback_single_inode: bdi 8:0: ino=145 state=I_DIRTY_SYNC age=1711 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183296: writeback_single_inode: bdi 8:0: ino=146 state=I_DIRTY_SYNC age=1711 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183298: writeback_single_inode: bdi 8:0: ino=147 state=I_DIRTY_SYNC age=1711 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183301: writeback_single_inode: bdi 8:0: ino=148 state=I_DIRTY_SYNC age=1711 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183303: writeback_single_inode: bdi 8:0: ino=149 state=I_DIRTY_SYNC age=1710 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183305: writeback_single_inode: bdi 8:0: ino=150 state=I_DIRTY_SYNC age=1710 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183307: writeback_single_inode: bdi 8:0: ino=151 state=I_DIRTY_SYNC age=1699 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183310: writeback_single_inode: bdi 8:0: ino=152 state=I_DIRTY_SYNC age=1699 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183312: writeback_single_inode: bdi 8:0: ino=153 state=I_DIRTY_SYNC age=1699 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183314: writeback_single_inode: bdi 8:0: ino=154 state=I_DIRTY_SYNC age=1698 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183316: writeback_single_inode: bdi 8:0: ino=155 state=I_DIRTY_SYNC age=1698 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183318: writeback_single_inode: bdi 8:0: ino=156 state=I_DIRTY_SYNC age=1697 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183321: writeback_single_inode: bdi 8:0: ino=157 state=I_DIRTY_SYNC age=1696 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183323: writeback_single_inode: bdi 8:0: ino=402653326 state=I_DIRTY_SYNC age=1695 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183325: writeback_single_inode: bdi 8:0: ino=402653327 state=I_DIRTY_SYNC age=1695 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183327: writeback_single_inode: bdi 8:0: ino=402653328 state=I_DIRTY_SYNC age=1674 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183330: writeback_single_inode: bdi 8:0: ino=402653329 state=I_DIRTY_SYNC age=1674 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183332: writeback_single_inode: bdi 8:0: ino=402653330 state=I_DIRTY_SYNC age=1674 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183334: writeback_single_inode: bdi 8:0: ino=402653331 state=I_DIRTY_SYNC age=1673 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183336: writeback_single_inode: bdi 8:0: ino=402653332 state=I_DIRTY_SYNC age=1672 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183339: writeback_single_inode: bdi 8:0: ino=402653333 state=I_DIRTY_SYNC age=1671 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183341: writeback_single_inode: bdi 8:0: ino=402653334 state=I_DIRTY_SYNC age=1670 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183343: writeback_single_inode: bdi 8:0: ino=402653335 state=I_DIRTY_SYNC age=1670 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183345: writeback_single_inode: bdi 8:0: ino=402653336 state=I_DIRTY_SYNC age=1670 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183348: writeback_single_inode: bdi 8:0: ino=402653337 state=I_DIRTY_SYNC age=1670 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183350: writeback_single_inode: bdi 8:0: ino=402653338 state=I_DIRTY_SYNC age=1670 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183352: writeback_single_inode: bdi 8:0: ino=402653339 state=I_DIRTY_SYNC age=1669 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183354: writeback_single_inode: bdi 8:0: ino=402653340 state=I_DIRTY_SYNC age=1669 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183357: writeback_single_inode: bdi 8:0: ino=402653341 state=I_DIRTY_SYNC age=1669 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183359: writeback_single_inode: bdi 8:0: ino=402653342 state=I_DIRTY_SYNC age=1668 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183361: writeback_single_inode: bdi 8:0: ino=402653343 state=I_DIRTY_SYNC age=1668 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183363: writeback_single_inode: bdi 8:0: ino=402653344 state=I_DIRTY_SYNC age=1668 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183366: writeback_single_inode: bdi 8:0: ino=402653345 state=I_DIRTY_SYNC age=1668 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183368: writeback_single_inode: bdi 8:0: ino=402653346 state=I_DIRTY_SYNC age=1668 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183370: writeback_single_inode: bdi 8:0: ino=402653347 state=I_DIRTY_SYNC age=1668 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183372: writeback_single_inode: bdi 8:0: ino=402653348 state=I_DIRTY_SYNC age=1668 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183375: writeback_single_inode: bdi 8:0: ino=402653349 state=I_DIRTY_SYNC age=1668 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183377: writeback_single_inode: bdi 8:0: ino=402653350 state=I_DIRTY_SYNC age=1667 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183379: writeback_single_inode: bdi 8:0: ino=134217878 state=I_DIRTY_SYNC age=1666 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183381: writeback_single_inode: bdi 8:0: ino=134217879 state=I_DIRTY_SYNC age=1666 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183383: writeback_single_inode: bdi 8:0: ino=134217880 state=I_DIRTY_SYNC age=1666 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183386: writeback_single_inode: bdi 8:0: ino=134217881 state=I_DIRTY_SYNC age=1666 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183388: writeback_single_inode: bdi 8:0: ino=134217882 state=I_DIRTY_SYNC age=1665 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183390: writeback_single_inode: bdi 8:0: ino=134217883 state=I_DIRTY_SYNC age=1663 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183392: writeback_single_inode: bdi 8:0: ino=134217884 state=I_DIRTY_SYNC age=1662 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183394: writeback_single_inode: bdi 8:0: ino=134217885 state=I_DIRTY_SYNC age=1662 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183397: writeback_single_inode: bdi 8:0: ino=134217886 state=I_DIRTY_SYNC age=1661 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183399: writeback_single_inode: bdi 8:0: ino=134217887 state=I_DIRTY_SYNC age=1661 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183401: writeback_single_inode: bdi 8:0: ino=134217888 state=I_DIRTY_SYNC age=1661 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183403: writeback_single_inode: bdi 8:0: ino=134217889 state=I_DIRTY_SYNC age=1661 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183405: writeback_single_inode: bdi 8:0: ino=134217890 state=I_DIRTY_SYNC age=1661 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183407: writeback_single_inode: bdi 8:0: ino=134217891 state=I_DIRTY_SYNC age=1661 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183410: writeback_single_inode: bdi 8:0: ino=134217892 state=I_DIRTY_SYNC age=1661 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183412: writeback_single_inode: bdi 8:0: ino=134217893 state=I_DIRTY_SYNC age=1661 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183414: writeback_single_inode: bdi 8:0: ino=134217894 state=I_DIRTY_SYNC age=1661 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183416: writeback_single_inode: bdi 8:0: ino=134217895 state=I_DIRTY_SYNC age=1660 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183418: writeback_single_inode: bdi 8:0: ino=134217896 state=I_DIRTY_SYNC age=1660 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183421: writeback_single_inode: bdi 8:0: ino=134217897 state=I_DIRTY_SYNC age=1660 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183423: writeback_single_inode: bdi 8:0: ino=134217898 state=I_DIRTY_SYNC age=1660 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183425: writeback_single_inode: bdi 8:0: ino=134217899 state=I_DIRTY_SYNC age=1659 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183427: writeback_single_inode: bdi 8:0: ino=134217900 state=I_DIRTY_SYNC age=1659 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183429: writeback_single_inode: bdi 8:0: ino=134217901 state=I_DIRTY_SYNC age=1659 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183432: writeback_single_inode: bdi 8:0: ino=134217902 state=I_DIRTY_SYNC age=1642 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183434: writeback_single_inode: bdi 8:0: ino=134217903 state=I_DIRTY_SYNC age=1642 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183436: writeback_single_inode: bdi 8:0: ino=134217904 state=I_DIRTY_SYNC age=1642 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183438: writeback_single_inode: bdi 8:0: ino=134217905 state=I_DIRTY_SYNC age=1642 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183440: writeback_single_inode: bdi 8:0: ino=134217906 state=I_DIRTY_SYNC age=1642 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183442: writeback_single_inode: bdi 8:0: ino=134217907 state=I_DIRTY_SYNC age=1641 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183445: writeback_single_inode: bdi 8:0: ino=134217908 state=I_DIRTY_SYNC age=1641 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183447: writeback_single_inode: bdi 8:0: ino=134217909 state=I_DIRTY_SYNC age=1641 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183449: writeback_single_inode: bdi 8:0: ino=134217910 state=I_DIRTY_SYNC age=1641 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183451: writeback_single_inode: bdi 8:0: ino=134217911 state=I_DIRTY_SYNC age=1641 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183454: writeback_single_inode: bdi 8:0: ino=134217912 state=I_DIRTY_SYNC age=1641 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183456: writeback_single_inode: bdi 8:0: ino=134217913 state=I_DIRTY_SYNC age=1641 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183458: writeback_single_inode: bdi 8:0: ino=134217914 state=I_DIRTY_SYNC age=1640 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183460: writeback_single_inode: bdi 8:0: ino=134217915 state=I_DIRTY_SYNC age=1640 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183462: writeback_single_inode: bdi 8:0: ino=134217916 state=I_DIRTY_SYNC age=1640 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183465: writeback_single_inode: bdi 8:0: ino=134217917 state=I_DIRTY_SYNC age=1640 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183467: writeback_single_inode: bdi 8:0: ino=134217918 state=I_DIRTY_SYNC age=1640 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183469: writeback_single_inode: bdi 8:0: ino=134217919 state=I_DIRTY_SYNC age=1640 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183471: writeback_single_inode: bdi 8:0: ino=134217984 state=I_DIRTY_SYNC age=1639 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183473: writeback_single_inode: bdi 8:0: ino=134217985 state=I_DIRTY_SYNC age=1639 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183476: writeback_single_inode: bdi 8:0: ino=134217986 state=I_DIRTY_SYNC age=1639 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183478: writeback_single_inode: bdi 8:0: ino=134217987 state=I_DIRTY_SYNC age=1639 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183480: writeback_single_inode: bdi 8:0: ino=134217988 state=I_DIRTY_SYNC age=1639 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183482: writeback_single_inode: bdi 8:0: ino=134217989 state=I_DIRTY_SYNC age=1639 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183484: writeback_single_inode: bdi 8:0: ino=134217990 state=I_DIRTY_SYNC age=1639 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183487: writeback_single_inode: bdi 8:0: ino=134217991 state=I_DIRTY_SYNC age=1638 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183489: writeback_single_inode: bdi 8:0: ino=134217992 state=I_DIRTY_SYNC age=1638 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183491: writeback_single_inode: bdi 8:0: ino=134217993 state=I_DIRTY_SYNC age=1638 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183493: writeback_single_inode: bdi 8:0: ino=134217994 state=I_DIRTY_SYNC age=1638 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183495: writeback_single_inode: bdi 8:0: ino=134217995 state=I_DIRTY_SYNC age=1638 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183497: writeback_single_inode: bdi 8:0: ino=134217996 state=I_DIRTY_SYNC age=1638 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183500: writeback_single_inode: bdi 8:0: ino=134217997 state=I_DIRTY_SYNC age=1638 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183502: writeback_single_inode: bdi 8:0: ino=134217998 state=I_DIRTY_SYNC age=1638 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183504: writeback_single_inode: bdi 8:0: ino=134217999 state=I_DIRTY_SYNC age=1638 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183506: writeback_single_inode: bdi 8:0: ino=134218000 state=I_DIRTY_SYNC age=1638 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183508: writeback_single_inode: bdi 8:0: ino=134218001 state=I_DIRTY_SYNC age=1638 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183510: writeback_single_inode: bdi 8:0: ino=134218002 state=I_DIRTY_SYNC age=1638 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183513: writeback_single_inode: bdi 8:0: ino=134218003 state=I_DIRTY_SYNC age=1638 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183515: writeback_single_inode: bdi 8:0: ino=134218004 state=I_DIRTY_SYNC age=1637 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183517: writeback_single_inode: bdi 8:0: ino=134218005 state=I_DIRTY_SYNC age=1637 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183519: writeback_single_inode: bdi 8:0: ino=134218006 state=I_DIRTY_SYNC age=1637 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183521: writeback_single_inode: bdi 8:0: ino=134218007 state=I_DIRTY_SYNC age=1637 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183524: writeback_single_inode: bdi 8:0: ino=134218008 state=I_DIRTY_SYNC age=1637 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183526: writeback_single_inode: bdi 8:0: ino=134218009 state=I_DIRTY_SYNC age=1637 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183528: writeback_single_inode: bdi 8:0: ino=134218010 state=I_DIRTY_SYNC age=1636 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183530: writeback_single_inode: bdi 8:0: ino=134218011 state=I_DIRTY_SYNC age=1636 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183532: writeback_single_inode: bdi 8:0: ino=134218012 state=I_DIRTY_SYNC age=1636 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183534: writeback_single_inode: bdi 8:0: ino=134218013 state=I_DIRTY_SYNC age=1636 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183537: writeback_single_inode: bdi 8:0: ino=134218014 state=I_DIRTY_SYNC age=1635 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183539: writeback_single_inode: bdi 8:0: ino=134218015 state=I_DIRTY_SYNC age=1635 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183541: writeback_single_inode: bdi 8:0: ino=134218016 state=I_DIRTY_SYNC age=1635 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183543: writeback_single_inode: bdi 8:0: ino=134218017 state=I_DIRTY_SYNC age=1635 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183545: writeback_single_inode: bdi 8:0: ino=134218018 state=I_DIRTY_SYNC age=1634 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183548: writeback_single_inode: bdi 8:0: ino=134218019 state=I_DIRTY_SYNC age=1634 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183550: writeback_single_inode: bdi 8:0: ino=134218020 state=I_DIRTY_SYNC age=1634 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183552: writeback_single_inode: bdi 8:0: ino=134218021 state=I_DIRTY_SYNC age=1634 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183554: writeback_single_inode: bdi 8:0: ino=134218022 state=I_DIRTY_SYNC age=1634 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183556: writeback_single_inode: bdi 8:0: ino=134218023 state=I_DIRTY_SYNC age=1633 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183558: writeback_single_inode: bdi 8:0: ino=134218024 state=I_DIRTY_SYNC age=1633 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183581: writeback_single_inode: bdi 8:0: ino=134218025 state=I_DIRTY_SYNC age=1633 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183584: writeback_single_inode: bdi 8:0: ino=134218026 state=I_DIRTY_SYNC age=1633 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183586: writeback_single_inode: bdi 8:0: ino=134218027 state=I_DIRTY_SYNC age=1633 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183588: writeback_single_inode: bdi 8:0: ino=134218028 state=I_DIRTY_SYNC age=1633 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183591: writeback_single_inode: bdi 8:0: ino=134218029 state=I_DIRTY_SYNC age=1633 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183593: writeback_single_inode: bdi 8:0: ino=134218030 state=I_DIRTY_SYNC age=1633 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183595: writeback_single_inode: bdi 8:0: ino=134218031 state=I_DIRTY_SYNC age=1633 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183597: writeback_single_inode: bdi 8:0: ino=134218032 state=I_DIRTY_SYNC age=1632 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183599: writeback_single_inode: bdi 8:0: ino=134218033 state=I_DIRTY_SYNC age=1632 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183602: writeback_single_inode: bdi 8:0: ino=134218034 state=I_DIRTY_SYNC age=1632 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183604: writeback_single_inode: bdi 8:0: ino=134218035 state=I_DIRTY_SYNC age=1632 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183606: writeback_single_inode: bdi 8:0: ino=134218036 state=I_DIRTY_SYNC age=1632 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183608: writeback_single_inode: bdi 8:0: ino=134218037 state=I_DIRTY_SYNC age=1631 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183611: writeback_single_inode: bdi 8:0: ino=134218038 state=I_DIRTY_SYNC age=1631 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183613: writeback_single_inode: bdi 8:0: ino=134218039 state=I_DIRTY_SYNC age=1631 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183615: writeback_single_inode: bdi 8:0: ino=134218040 state=I_DIRTY_SYNC age=1631 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183617: writeback_single_inode: bdi 8:0: ino=134218041 state=I_DIRTY_SYNC age=1631 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183619: writeback_single_inode: bdi 8:0: ino=134218042 state=I_DIRTY_SYNC age=1631 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183622: writeback_single_inode: bdi 8:0: ino=134218043 state=I_DIRTY_SYNC age=1631 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183624: writeback_single_inode: bdi 8:0: ino=134218044 state=I_DIRTY_SYNC age=1631 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183626: writeback_single_inode: bdi 8:0: ino=134218045 state=I_DIRTY_SYNC age=1631 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183629: writeback_single_inode: bdi 8:0: ino=134218046 state=I_DIRTY_SYNC age=1630 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183631: writeback_single_inode: bdi 8:0: ino=134218047 state=I_DIRTY_SYNC age=1630 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183633: writeback_single_inode: bdi 8:0: ino=134218048 state=I_DIRTY_SYNC age=1630 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183635: writeback_single_inode: bdi 8:0: ino=134218049 state=I_DIRTY_SYNC age=1630 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183637: writeback_single_inode: bdi 8:0: ino=134218050 state=I_DIRTY_SYNC age=1630 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183640: writeback_single_inode: bdi 8:0: ino=134218051 state=I_DIRTY_SYNC age=1630 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183642: writeback_single_inode: bdi 8:0: ino=134218052 state=I_DIRTY_SYNC age=1630 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183644: writeback_single_inode: bdi 8:0: ino=134218053 state=I_DIRTY_SYNC age=1630 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183646: writeback_single_inode: bdi 8:0: ino=134218054 state=I_DIRTY_SYNC age=1629 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183648: writeback_single_inode: bdi 8:0: ino=134218055 state=I_DIRTY_SYNC age=1629 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183651: writeback_single_inode: bdi 8:0: ino=134218056 state=I_DIRTY_SYNC age=1629 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183653: writeback_single_inode: bdi 8:0: ino=134218057 state=I_DIRTY_SYNC age=1629 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183655: writeback_single_inode: bdi 8:0: ino=134218058 state=I_DIRTY_SYNC age=1629 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183657: writeback_single_inode: bdi 8:0: ino=134218059 state=I_DIRTY_SYNC age=1629 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183659: writeback_single_inode: bdi 8:0: ino=402653351 state=I_DIRTY_SYNC age=1629 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183662: writeback_single_inode: bdi 8:0: ino=402653352 state=I_DIRTY_SYNC age=1603 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183664: writeback_single_inode: bdi 8:0: ino=402653353 state=I_DIRTY_SYNC age=1602 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183666: writeback_single_inode: bdi 8:0: ino=134218060 state=I_DIRTY_SYNC age=1602 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183668: writeback_single_inode: bdi 8:0: ino=134218061 state=I_DIRTY_SYNC age=1601 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183671: writeback_single_inode: bdi 8:0: ino=134218062 state=I_DIRTY_SYNC age=1601 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183673: writeback_single_inode: bdi 8:0: ino=134218063 state=I_DIRTY_SYNC age=1601 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183675: writeback_single_inode: bdi 8:0: ino=134218064 state=I_DIRTY_SYNC age=1601 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183677: writeback_single_inode: bdi 8:0: ino=134218065 state=I_DIRTY_SYNC age=1601 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183680: writeback_single_inode: bdi 8:0: ino=134218066 state=I_DIRTY_SYNC age=1600 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183682: writeback_single_inode: bdi 8:0: ino=268628487 state=I_DIRTY_SYNC age=1600 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183684: writeback_single_inode: bdi 8:0: ino=268628488 state=I_DIRTY_SYNC age=1600 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183686: writeback_single_inode: bdi 8:0: ino=268628489 state=I_DIRTY_SYNC age=1600 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183688: writeback_single_inode: bdi 8:0: ino=268628490 state=I_DIRTY_SYNC age=1600 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183691: writeback_single_inode: bdi 8:0: ino=268628491 state=I_DIRTY_SYNC age=1599 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183693: writeback_single_inode: bdi 8:0: ino=268628492 state=I_DIRTY_SYNC age=1599 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183695: writeback_single_inode: bdi 8:0: ino=268628493 state=I_DIRTY_SYNC age=1599 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183697: writeback_single_inode: bdi 8:0: ino=402653355 state=I_DIRTY_SYNC age=1598 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183699: writeback_single_inode: bdi 8:0: ino=402653356 state=I_DIRTY_SYNC age=1598 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183701: writeback_single_inode: bdi 8:0: ino=402653357 state=I_DIRTY_SYNC age=1598 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183704: writeback_single_inode: bdi 8:0: ino=402653358 state=I_DIRTY_SYNC age=1598 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183706: writeback_single_inode: bdi 8:0: ino=402653359 state=I_DIRTY_SYNC age=1598 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183708: writeback_single_inode: bdi 8:0: ino=402653360 state=I_DIRTY_SYNC age=1597 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183710: writeback_single_inode: bdi 8:0: ino=402653361 state=I_DIRTY_SYNC age=1597 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183712: writeback_single_inode: bdi 8:0: ino=402653362 state=I_DIRTY_SYNC age=1597 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183715: writeback_single_inode: bdi 8:0: ino=402653363 state=I_DIRTY_SYNC age=1597 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183717: writeback_single_inode: bdi 8:0: ino=402653364 state=I_DIRTY_SYNC age=1597 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183719: writeback_single_inode: bdi 8:0: ino=402653365 state=I_DIRTY_SYNC age=1596 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183721: writeback_single_inode: bdi 8:0: ino=402653366 state=I_DIRTY_SYNC age=1596 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183723: writeback_single_inode: bdi 8:0: ino=402653367 state=I_DIRTY_SYNC age=1596 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183725: writeback_single_inode: bdi 8:0: ino=402653368 state=I_DIRTY_SYNC age=1596 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183728: writeback_single_inode: bdi 8:0: ino=402653369 state=I_DIRTY_SYNC age=1596 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183730: writeback_single_inode: bdi 8:0: ino=402653370 state=I_DIRTY_SYNC age=1595 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183732: writeback_single_inode: bdi 8:0: ino=134218067 state=I_DIRTY_SYNC age=1595 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183734: writeback_single_inode: bdi 8:0: ino=134218068 state=I_DIRTY_SYNC age=1595 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183736: writeback_single_inode: bdi 8:0: ino=134218069 state=I_DIRTY_SYNC age=1595 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183739: writeback_single_inode: bdi 8:0: ino=134218070 state=I_DIRTY_SYNC age=1594 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183741: writeback_single_inode: bdi 8:0: ino=134218071 state=I_DIRTY_SYNC age=1594 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183743: writeback_single_inode: bdi 8:0: ino=134218072 state=I_DIRTY_SYNC age=1594 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183745: writeback_single_inode: bdi 8:0: ino=134218073 state=I_DIRTY_SYNC age=1594 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183747: writeback_single_inode: bdi 8:0: ino=134218074 state=I_DIRTY_SYNC age=1594 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183750: writeback_single_inode: bdi 8:0: ino=134218075 state=I_DIRTY_SYNC age=1593 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183752: writeback_single_inode: bdi 8:0: ino=159 state=I_DIRTY_SYNC age=1593 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183754: writeback_single_inode: bdi 8:0: ino=160 state=I_DIRTY_SYNC age=1592 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183756: writeback_single_inode: bdi 8:0: ino=161 state=I_DIRTY_SYNC age=1592 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183758: writeback_single_inode: bdi 8:0: ino=162 state=I_DIRTY_SYNC age=1592 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183761: writeback_single_inode: bdi 8:0: ino=163 state=I_DIRTY_SYNC age=1592 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183763: writeback_single_inode: bdi 8:0: ino=164 state=I_DIRTY_SYNC age=1592 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183765: writeback_single_inode: bdi 8:0: ino=165 state=I_DIRTY_SYNC age=1592 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183767: writeback_single_inode: bdi 8:0: ino=268628495 state=I_DIRTY_SYNC age=1592 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183769: writeback_single_inode: bdi 8:0: ino=268628496 state=I_DIRTY_SYNC age=1592 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183771: writeback_single_inode: bdi 8:0: ino=134218077 state=I_DIRTY_SYNC age=1592 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183774: writeback_single_inode: bdi 8:0: ino=134218078 state=I_DIRTY_SYNC age=1592 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183776: writeback_single_inode: bdi 8:0: ino=134218079 state=I_DIRTY_SYNC age=1592 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183778: writeback_single_inode: bdi 8:0: ino=134218080 state=I_DIRTY_SYNC age=1592 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183780: writeback_single_inode: bdi 8:0: ino=402653372 state=I_DIRTY_SYNC age=1591 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183782: writeback_single_inode: bdi 8:0: ino=402653373 state=I_DIRTY_SYNC age=1591 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183785: writeback_single_inode: bdi 8:0: ino=402653374 state=I_DIRTY_SYNC age=1591 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183787: writeback_single_inode: bdi 8:0: ino=402653375 state=I_DIRTY_SYNC age=1591 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183789: writeback_single_inode: bdi 8:0: ino=402653408 state=I_DIRTY_SYNC age=1591 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183791: writeback_single_inode: bdi 8:0: ino=402653409 state=I_DIRTY_SYNC age=1591 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183793: writeback_single_inode: bdi 8:0: ino=402653410 state=I_DIRTY_SYNC age=1591 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183796: writeback_single_inode: bdi 8:0: ino=402653411 state=I_DIRTY_SYNC age=1591 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183798: writeback_single_inode: bdi 8:0: ino=134218081 state=I_DIRTY_SYNC age=1591 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183800: writeback_single_inode: bdi 8:0: ino=134218082 state=I_DIRTY_SYNC age=1591 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183802: writeback_single_inode: bdi 8:0: ino=167 state=I_DIRTY_SYNC age=1591 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183804: writeback_single_inode: bdi 8:0: ino=168 state=I_DIRTY_SYNC age=1591 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183806: writeback_single_inode: bdi 8:0: ino=169 state=I_DIRTY_SYNC age=1591 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183809: writeback_single_inode: bdi 8:0: ino=170 state=I_DIRTY_SYNC age=1590 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183811: writeback_single_inode: bdi 8:0: ino=171 state=I_DIRTY_SYNC age=1590 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183813: writeback_single_inode: bdi 8:0: ino=172 state=I_DIRTY_SYNC age=1590 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183815: writeback_single_inode: bdi 8:0: ino=134218084 state=I_DIRTY_SYNC age=1590 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183817: writeback_single_inode: bdi 8:0: ino=134218085 state=I_DIRTY_SYNC age=1590 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183820: writeback_single_inode: bdi 8:0: ino=173 state=I_DIRTY_SYNC age=1590 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183822: writeback_single_inode: bdi 8:0: ino=174 state=I_DIRTY_SYNC age=1590 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183824: writeback_single_inode: bdi 8:0: ino=268628498 state=I_DIRTY_SYNC age=1590 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183826: writeback_single_inode: bdi 8:0: ino=268628499 state=I_DIRTY_SYNC age=1590 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183828: writeback_single_inode: bdi 8:0: ino=268628500 state=I_DIRTY_SYNC age=1590 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183831: writeback_single_inode: bdi 8:0: ino=268628501 state=I_DIRTY_SYNC age=1589 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183833: writeback_single_inode: bdi 8:0: ino=268628502 state=I_DIRTY_SYNC age=1589 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183835: writeback_single_inode: bdi 8:0: ino=268628503 state=I_DIRTY_SYNC age=1589 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183837: writeback_single_inode: bdi 8:0: ino=268628504 state=I_DIRTY_SYNC age=1589 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183839: writeback_single_inode: bdi 8:0: ino=268628505 state=I_DIRTY_SYNC age=1589 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183842: writeback_single_inode: bdi 8:0: ino=268628506 state=I_DIRTY_SYNC age=1589 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183844: writeback_single_inode: bdi 8:0: ino=268628507 state=I_DIRTY_SYNC age=1589 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183846: writeback_single_inode: bdi 8:0: ino=268628508 state=I_DIRTY_SYNC age=1589 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183848: writeback_single_inode: bdi 8:0: ino=268628509 state=I_DIRTY_SYNC age=1589 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183850: writeback_single_inode: bdi 8:0: ino=268628510 state=I_DIRTY_SYNC age=1589 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183852: writeback_single_inode: bdi 8:0: ino=268628511 state=I_DIRTY_SYNC age=1589 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183855: writeback_single_inode: bdi 8:0: ino=268628512 state=I_DIRTY_SYNC age=1589 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183857: writeback_single_inode: bdi 8:0: ino=268628513 state=I_DIRTY_SYNC age=1589 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183859: writeback_single_inode: bdi 8:0: ino=268628514 state=I_DIRTY_SYNC age=1589 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183861: writeback_single_inode: bdi 8:0: ino=268628515 state=I_DIRTY_SYNC age=1588 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183863: writeback_single_inode: bdi 8:0: ino=402653413 state=I_DIRTY_SYNC age=1588 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183866: writeback_single_inode: bdi 8:0: ino=176 state=I_DIRTY_SYNC age=1588 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183868: writeback_single_inode: bdi 8:0: ino=177 state=I_DIRTY_SYNC age=1588 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183870: writeback_single_inode: bdi 8:0: ino=178 state=I_DIRTY_SYNC age=1588 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183872: writeback_single_inode: bdi 8:0: ino=179 state=I_DIRTY_SYNC age=1588 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183874: writeback_single_inode: bdi 8:0: ino=180 state=I_DIRTY_SYNC age=1588 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183876: writeback_single_inode: bdi 8:0: ino=181 state=I_DIRTY_SYNC age=1588 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183879: writeback_single_inode: bdi 8:0: ino=182 state=I_DIRTY_SYNC age=1588 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183881: writeback_single_inode: bdi 8:0: ino=183 state=I_DIRTY_SYNC age=1588 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183883: writeback_single_inode: bdi 8:0: ino=184 state=I_DIRTY_SYNC age=1588 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183885: writeback_single_inode: bdi 8:0: ino=185 state=I_DIRTY_SYNC age=1588 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183887: writeback_single_inode: bdi 8:0: ino=186 state=I_DIRTY_SYNC age=1587 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183890: writeback_single_inode: bdi 8:0: ino=187 state=I_DIRTY_SYNC age=1587 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183892: writeback_single_inode: bdi 8:0: ino=134218087 state=I_DIRTY_SYNC age=1587 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183894: writeback_single_inode: bdi 8:0: ino=134218088 state=I_DIRTY_SYNC age=1587 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183896: writeback_single_inode: bdi 8:0: ino=134218089 state=I_DIRTY_SYNC age=1587 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183898: writeback_single_inode: bdi 8:0: ino=188 state=I_DIRTY_SYNC age=1587 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183901: writeback_single_inode: bdi 8:0: ino=268628517 state=I_DIRTY_SYNC age=1587 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183903: writeback_single_inode: bdi 8:0: ino=268628518 state=I_DIRTY_SYNC age=1587 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183905: writeback_single_inode: bdi 8:0: ino=268628519 state=I_DIRTY_SYNC age=1587 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183907: writeback_single_inode: bdi 8:0: ino=268628520 state=I_DIRTY_SYNC age=1587 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183909: writeback_single_inode: bdi 8:0: ino=268628521 state=I_DIRTY_SYNC age=1587 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183911: writeback_single_inode: bdi 8:0: ino=268628522 state=I_DIRTY_SYNC age=1587 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183914: writeback_single_inode: bdi 8:0: ino=268628523 state=I_DIRTY_SYNC age=1587 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183916: writeback_single_inode: bdi 8:0: ino=268628524 state=I_DIRTY_SYNC age=1586 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183918: writeback_single_inode: bdi 8:0: ino=268628525 state=I_DIRTY_SYNC age=1586 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183920: writeback_single_inode: bdi 8:0: ino=402653415 state=I_DIRTY_SYNC age=1586 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183922: writeback_single_inode: bdi 8:0: ino=189 state=I_DIRTY_SYNC age=1586 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183925: writeback_single_inode: bdi 8:0: ino=190 state=I_DIRTY_SYNC age=1586 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183927: writeback_single_inode: bdi 8:0: ino=256 state=I_DIRTY_SYNC age=1586 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183929: writeback_single_inode: bdi 8:0: ino=134218091 state=I_DIRTY_SYNC age=1586 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183931: writeback_single_inode: bdi 8:0: ino=134218092 state=I_DIRTY_SYNC age=1586 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183933: writeback_single_inode: bdi 8:0: ino=134218093 state=I_DIRTY_SYNC age=1586 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183936: writeback_single_inode: bdi 8:0: ino=134218094 state=I_DIRTY_SYNC age=1586 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183938: writeback_single_inode: bdi 8:0: ino=268628527 state=I_DIRTY_SYNC age=1585 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183940: writeback_single_inode: bdi 8:0: ino=257 state=I_DIRTY_SYNC age=1585 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183942: writeback_single_inode: bdi 8:0: ino=258 state=I_DIRTY_SYNC age=1585 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183944: writeback_single_inode: bdi 8:0: ino=134218095 state=I_DIRTY_SYNC age=1585 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183947: writeback_single_inode: bdi 8:0: ino=402653417 state=I_DIRTY_SYNC age=1585 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183949: writeback_single_inode: bdi 8:0: ino=402653418 state=I_DIRTY_SYNC age=1585 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183951: writeback_single_inode: bdi 8:0: ino=402653419 state=I_DIRTY_SYNC age=1585 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183953: writeback_single_inode: bdi 8:0: ino=402653420 state=I_DIRTY_SYNC age=1585 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183955: writeback_single_inode: bdi 8:0: ino=402653421 state=I_DIRTY_SYNC age=1585 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183957: writeback_single_inode: bdi 8:0: ino=134218096 state=I_DIRTY_SYNC age=1585 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183960: writeback_single_inode: bdi 8:0: ino=134218097 state=I_DIRTY_SYNC age=1585 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183962: writeback_single_inode: bdi 8:0: ino=134218098 state=I_DIRTY_SYNC age=1585 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183964: writeback_single_inode: bdi 8:0: ino=260 state=I_DIRTY_SYNC age=1584 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183966: writeback_single_inode: bdi 8:0: ino=261 state=I_DIRTY_SYNC age=1584 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183968: writeback_single_inode: bdi 8:0: ino=262 state=I_DIRTY_SYNC age=1584 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183970: writeback_single_inode: bdi 8:0: ino=263 state=I_DIRTY_SYNC age=1584 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183973: writeback_single_inode: bdi 8:0: ino=264 state=I_DIRTY_SYNC age=1584 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183975: writeback_single_inode: bdi 8:0: ino=134218100 state=I_DIRTY_SYNC age=1584 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183977: writeback_single_inode: bdi 8:0: ino=134218101 state=I_DIRTY_SYNC age=1584 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183984: writeback_single_inode: bdi 8:0: ino=134218102 state=I_DIRTY_SYNC age=1585 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183987: writeback_single_inode: bdi 8:0: ino=134218103 state=I_DIRTY_SYNC age=1585 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183989: writeback_single_inode: bdi 8:0: ino=134218104 state=I_DIRTY_SYNC age=1584 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183991: writeback_single_inode: bdi 8:0: ino=134218105 state=I_DIRTY_SYNC age=1584 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183993: writeback_single_inode: bdi 8:0: ino=134218106 state=I_DIRTY_SYNC age=1584 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183995: writeback_single_inode: bdi 8:0: ino=134218107 state=I_DIRTY_SYNC age=1584 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.183998: writeback_single_inode: bdi 8:0: ino=134218108 state=I_DIRTY_SYNC age=1584 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.184000: writeback_single_inode: bdi 8:0: ino=134218109 state=I_DIRTY_SYNC age=1562 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.184002: writeback_single_inode: bdi 8:0: ino=134218110 state=I_DIRTY_SYNC age=1562 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.184004: writeback_single_inode: bdi 8:0: ino=134218111 state=I_DIRTY_SYNC age=1561 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.184007: writeback_single_inode: bdi 8:0: ino=268628529 state=I_DIRTY_SYNC age=1561 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.184009: writeback_single_inode: bdi 8:0: ino=268628530 state=I_DIRTY_SYNC age=1561 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.184011: writeback_single_inode: bdi 8:0: ino=268628531 state=I_DIRTY_SYNC age=1561 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.184013: writeback_single_inode: bdi 8:0: ino=268628532 state=I_DIRTY_SYNC age=1561 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.184015: writeback_single_inode: bdi 8:0: ino=402653423 state=I_DIRTY_SYNC age=1561 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.184018: writeback_single_inode: bdi 8:0: ino=402653424 state=I_DIRTY_SYNC age=1561 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.184020: writeback_single_inode: bdi 8:0: ino=402653425 state=I_DIRTY_SYNC age=1560 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.184022: writeback_single_inode: bdi 8:0: ino=402653426 state=I_DIRTY_SYNC age=1560 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.184024: writeback_single_inode: bdi 8:0: ino=402653427 state=I_DIRTY_SYNC age=1560 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.184027: writeback_single_inode: bdi 8:0: ino=402653428 state=I_DIRTY_SYNC age=1560 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.184029: writeback_single_inode: bdi 8:0: ino=402653429 state=I_DIRTY_SYNC age=1560 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.184031: writeback_single_inode: bdi 8:0: ino=268628533 state=I_DIRTY_SYNC age=1560 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.184033: writeback_single_inode: bdi 8:0: ino=268628534 state=I_DIRTY_SYNC age=1560 index=0 to_write=1024 wrote=0
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              dd-2975  [000]  2468.184178: writeback_single_inode: bdi 8:0: ino=134218177 state=I_DIRTY_SYNC age=1548 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.184180: writeback_single_inode: bdi 8:0: ino=134218178 state=I_DIRTY_SYNC age=1548 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.184183: writeback_single_inode: bdi 8:0: ino=134218179 state=I_DIRTY_SYNC age=1548 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.184185: writeback_single_inode: bdi 8:0: ino=134218180 state=I_DIRTY_SYNC age=1548 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.184187: writeback_single_inode: bdi 8:0: ino=134218181 state=I_DIRTY_SYNC age=1548 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.184189: writeback_single_inode: bdi 8:0: ino=134218182 state=I_DIRTY_SYNC age=1548 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.184191: writeback_single_inode: bdi 8:0: ino=134218183 state=I_DIRTY_SYNC age=1547 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.184193: writeback_single_inode: bdi 8:0: ino=134218184 state=I_DIRTY_SYNC age=1547 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.184196: writeback_single_inode: bdi 8:0: ino=134218185 state=I_DIRTY_SYNC age=1547 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.184198: writeback_single_inode: bdi 8:0: ino=134218186 state=I_DIRTY_SYNC age=1547 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.184200: writeback_single_inode: bdi 8:0: ino=134218187 state=I_DIRTY_SYNC age=1547 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.184202: writeback_single_inode: bdi 8:0: ino=134218188 state=I_DIRTY_SYNC age=1547 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.184204: writeback_single_inode: bdi 8:0: ino=134218189 state=I_DIRTY_SYNC age=1547 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.184206: writeback_single_inode: bdi 8:0: ino=134218190 state=I_DIRTY_SYNC age=1547 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.184209: writeback_single_inode: bdi 8:0: ino=291 state=I_DIRTY_SYNC age=1545 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.184211: writeback_single_inode: bdi 8:0: ino=402653437 state=I_DIRTY_SYNC age=1545 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.184213: writeback_single_inode: bdi 8:0: ino=134218192 state=I_DIRTY_SYNC age=1545 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.184215: writeback_single_inode: bdi 8:0: ino=134218193 state=I_DIRTY_SYNC age=1545 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.184217: writeback_single_inode: bdi 8:0: ino=134218194 state=I_DIRTY_SYNC age=1545 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.184220: writeback_single_inode: bdi 8:0: ino=268628612 state=I_DIRTY_SYNC age=1545 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.184222: writeback_single_inode: bdi 8:0: ino=402653438 state=I_DIRTY_SYNC age=1545 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.184224: writeback_single_inode: bdi 8:0: ino=402653440 state=I_DIRTY_SYNC age=1544 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.184227: writeback_single_inode: bdi 8:0: ino=402653441 state=I_DIRTY_SYNC age=1544 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.184229: writeback_single_inode: bdi 8:0: ino=293 state=I_DIRTY_SYNC age=1544 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.184231: writeback_single_inode: bdi 8:0: ino=294 state=I_DIRTY_SYNC age=1544 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.184233: writeback_single_inode: bdi 8:0: ino=268628614 state=I_DIRTY_SYNC age=1544 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.184235: writeback_single_inode: bdi 8:0: ino=268628615 state=I_DIRTY_SYNC age=1544 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.184238: writeback_single_inode: bdi 8:0: ino=134218196 state=I_DIRTY_SYNC age=1544 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.184240: writeback_single_inode: bdi 8:0: ino=134218197 state=I_DIRTY_SYNC age=1544 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.184242: writeback_single_inode: bdi 8:0: ino=134218198 state=I_DIRTY_SYNC age=1544 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.184244: writeback_single_inode: bdi 8:0: ino=402653443 state=I_DIRTY_SYNC age=1544 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.184246: writeback_single_inode: bdi 8:0: ino=134218200 state=I_DIRTY_SYNC age=1544 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.184249: writeback_single_inode: bdi 8:0: ino=134218201 state=I_DIRTY_SYNC age=1543 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.184251: writeback_single_inode: bdi 8:0: ino=134218202 state=I_DIRTY_SYNC age=1543 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.184253: writeback_single_inode: bdi 8:0: ino=134218203 state=I_DIRTY_SYNC age=1543 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.184255: writeback_single_inode: bdi 8:0: ino=134218204 state=I_DIRTY_SYNC age=1543 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.184258: writeback_single_inode: bdi 8:0: ino=268628617 state=I_DIRTY_SYNC age=1543 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.184260: writeback_single_inode: bdi 8:0: ino=402653445 state=I_DIRTY_SYNC age=1543 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.184262: writeback_single_inode: bdi 8:0: ino=297 state=I_DIRTY_SYNC age=1543 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.184264: writeback_single_inode: bdi 8:0: ino=298 state=I_DIRTY_SYNC age=1543 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.184267: writeback_single_inode: bdi 8:0: ino=299 state=I_DIRTY_SYNC age=1521 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.184269: writeback_single_inode: bdi 8:0: ino=300 state=I_DIRTY_SYNC age=1521 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.184271: writeback_single_inode: bdi 8:0: ino=402653446 state=I_DIRTY_SYNC age=1521 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.184273: writeback_single_inode: bdi 8:0: ino=402653447 state=I_DIRTY_SYNC age=1521 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.184275: writeback_single_inode: bdi 8:0: ino=402653448 state=I_DIRTY_SYNC age=1521 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.184278: writeback_single_inode: bdi 8:0: ino=134218206 state=I_DIRTY_SYNC age=1521 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.184280: writeback_single_inode: bdi 8:0: ino=134218207 state=I_DIRTY_SYNC age=1521 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.184282: writeback_single_inode: bdi 8:0: ino=134218240 state=I_DIRTY_SYNC age=1521 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.184284: writeback_single_inode: bdi 8:0: ino=134218241 state=I_DIRTY_SYNC age=1521 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.184287: writeback_single_inode: bdi 8:0: ino=134218242 state=I_DIRTY_SYNC age=1521 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.184289: writeback_single_inode: bdi 8:0: ino=402653449 state=I_DIRTY_SYNC age=1520 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.184291: writeback_single_inode: bdi 8:0: ino=268628618 state=I_DIRTY_SYNC age=1520 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.184293: writeback_single_inode: bdi 8:0: ino=268628619 state=I_DIRTY_SYNC age=1520 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.184295: writeback_single_inode: bdi 8:0: ino=268628620 state=I_DIRTY_SYNC age=1520 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.184298: writeback_single_inode: bdi 8:0: ino=268628621 state=I_DIRTY_SYNC age=1520 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.184300: writeback_single_inode: bdi 8:0: ino=268628622 state=I_DIRTY_SYNC age=1520 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.184302: writeback_single_inode: bdi 8:0: ino=268628623 state=I_DIRTY_SYNC age=1520 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.184304: writeback_single_inode: bdi 8:0: ino=268628624 state=I_DIRTY_SYNC age=1520 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.184306: writeback_single_inode: bdi 8:0: ino=268628625 state=I_DIRTY_SYNC age=1520 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.184309: writeback_single_inode: bdi 8:0: ino=268628626 state=I_DIRTY_SYNC age=1520 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.184311: writeback_single_inode: bdi 8:0: ino=268628627 state=I_DIRTY_SYNC age=1520 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.184313: writeback_single_inode: bdi 8:0: ino=268628628 state=I_DIRTY_SYNC age=1520 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.184315: writeback_single_inode: bdi 8:0: ino=268628629 state=I_DIRTY_SYNC age=1519 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.184317: writeback_single_inode: bdi 8:0: ino=268628630 state=I_DIRTY_SYNC age=1519 index=0 to_write=1024 wrote=0
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              dd-2975  [000]  2468.184463: writeback_single_inode: bdi 8:0: ino=134218279 state=I_DIRTY_SYNC age=1477 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.184466: writeback_single_inode: bdi 8:0: ino=134218280 state=I_DIRTY_SYNC age=1477 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.184468: writeback_single_inode: bdi 8:0: ino=134218281 state=I_DIRTY_SYNC age=1477 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.184470: writeback_single_inode: bdi 8:0: ino=134218282 state=I_DIRTY_SYNC age=1477 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.184472: writeback_single_inode: bdi 8:0: ino=134218283 state=I_DIRTY_SYNC age=1477 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.184474: writeback_single_inode: bdi 8:0: ino=268628715 state=I_DIRTY_SYNC age=1477 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.184476: writeback_single_inode: bdi 8:0: ino=134218284 state=I_DIRTY_SYNC age=1477 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.184479: writeback_single_inode: bdi 8:0: ino=134218285 state=I_DIRTY_SYNC age=1477 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.184481: writeback_single_inode: bdi 8:0: ino=134218286 state=I_DIRTY_SYNC age=1477 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.184483: writeback_single_inode: bdi 8:0: ino=268628716 state=I_DIRTY_SYNC age=1477 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.184485: writeback_single_inode: bdi 8:0: ino=134218287 state=I_DIRTY_SYNC age=1477 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.184487: writeback_single_inode: bdi 8:0: ino=134218288 state=I_DIRTY_SYNC age=1477 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.184490: writeback_single_inode: bdi 8:0: ino=134218289 state=I_DIRTY_SYNC age=1477 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.184492: writeback_single_inode: bdi 8:0: ino=134218290 state=I_DIRTY_SYNC age=1477 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.184494: writeback_single_inode: bdi 8:0: ino=134218291 state=I_DIRTY_SYNC age=1477 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.184496: writeback_single_inode: bdi 8:0: ino=268628717 state=I_DIRTY_SYNC age=1477 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.184498: writeback_single_inode: bdi 8:0: ino=134218292 state=I_DIRTY_SYNC age=1477 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.184501: writeback_single_inode: bdi 8:0: ino=134218293 state=I_DIRTY_SYNC age=1477 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.184503: writeback_single_inode: bdi 8:0: ino=268628653 state=I_DIRTY_SYNC age=1477 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.184505: writeback_single_inode: bdi 8:0: ino=268628718 state=I_DIRTY_SYNC age=1477 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.184507: writeback_single_inode: bdi 8:0: ino=268628654 state=I_DIRTY_SYNC age=1477 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.184509: writeback_single_inode: bdi 8:0: ino=268628655 state=I_DIRTY_SYNC age=1477 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.184511: writeback_single_inode: bdi 8:0: ino=268628656 state=I_DIRTY_SYNC age=1477 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.184514: writeback_single_inode: bdi 8:0: ino=268628719 state=I_DIRTY_SYNC age=1477 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.184516: writeback_single_inode: bdi 8:0: ino=268628657 state=I_DIRTY_SYNC age=1477 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.184518: writeback_single_inode: bdi 8:0: ino=268628658 state=I_DIRTY_SYNC age=1477 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.184521: writeback_single_inode: bdi 8:0: ino=268628659 state=I_DIRTY_SYNC age=1477 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.184523: writeback_single_inode: bdi 8:0: ino=268628720 state=I_DIRTY_SYNC age=1477 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.184525: writeback_single_inode: bdi 8:0: ino=268628660 state=I_DIRTY_SYNC age=1477 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.184527: writeback_single_inode: bdi 8:0: ino=268628661 state=I_DIRTY_SYNC age=1477 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.184529: writeback_single_inode: bdi 8:0: ino=268628662 state=I_DIRTY_SYNC age=1477 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.184531: writeback_single_inode: bdi 8:0: ino=268628663 state=I_DIRTY_SYNC age=1477 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.184534: writeback_single_inode: bdi 8:0: ino=268628664 state=I_DIRTY_SYNC age=1477 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.184536: writeback_single_inode: bdi 8:0: ino=402653458 state=I_DIRTY_SYNC age=1477 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.184538: writeback_single_inode: bdi 8:0: ino=402653459 state=I_DIRTY_SYNC age=1477 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.184540: writeback_single_inode: bdi 8:0: ino=402653460 state=I_DIRTY_SYNC age=1477 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.184542: writeback_single_inode: bdi 8:0: ino=402653461 state=I_DIRTY_SYNC age=1477 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.184545: writeback_single_inode: bdi 8:0: ino=268628721 state=I_DIRTY_SYNC age=1477 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.184547: writeback_single_inode: bdi 8:0: ino=402653462 state=I_DIRTY_SYNC age=1477 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.184549: writeback_single_inode: bdi 8:0: ino=402653463 state=I_DIRTY_SYNC age=1477 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.184551: writeback_single_inode: bdi 8:0: ino=268628665 state=I_DIRTY_SYNC age=1477 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.184553: writeback_single_inode: bdi 8:0: ino=268628666 state=I_DIRTY_SYNC age=1477 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.184555: writeback_single_inode: bdi 8:0: ino=268628667 state=I_DIRTY_SYNC age=1477 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.184558: writeback_single_inode: bdi 8:0: ino=308 state=I_DIRTY_SYNC age=1477 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.184560: writeback_single_inode: bdi 8:0: ino=309 state=I_DIRTY_SYNC age=1477 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.184562: writeback_single_inode: bdi 8:0: ino=310 state=I_DIRTY_SYNC age=1477 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.184564: writeback_single_inode: bdi 8:0: ino=268628722 state=I_DIRTY_SYNC age=1476 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.184566: writeback_single_inode: bdi 8:0: ino=311 state=I_DIRTY_SYNC age=1476 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.184568: writeback_single_inode: bdi 8:0: ino=268628668 state=I_DIRTY_SYNC age=1476 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.184571: writeback_single_inode: bdi 8:0: ino=268628669 state=I_DIRTY_SYNC age=1476 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.184573: writeback_single_inode: bdi 8:0: ino=268628670 state=I_DIRTY_SYNC age=1476 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.184575: writeback_single_inode: bdi 8:0: ino=268628671 state=I_DIRTY_SYNC age=1476 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.184577: writeback_single_inode: bdi 8:0: ino=268628704 state=I_DIRTY_SYNC age=1476 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.184579: writeback_single_inode: bdi 8:0: ino=268628705 state=I_DIRTY_SYNC age=1476 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.184582: writeback_single_inode: bdi 8:0: ino=268628706 state=I_DIRTY_SYNC age=1476 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.184584: writeback_single_inode: bdi 8:0: ino=268628707 state=I_DIRTY_SYNC age=1476 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.184586: writeback_single_inode: bdi 8:0: ino=268628723 state=I_DIRTY_SYNC age=1476 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.184588: writeback_single_inode: bdi 8:0: ino=268628708 state=I_DIRTY_SYNC age=1476 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.184590: writeback_single_inode: bdi 8:0: ino=268628709 state=I_DIRTY_SYNC age=1476 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.184593: writeback_single_inode: bdi 8:0: ino=268628724 state=I_DIRTY_SYNC age=1476 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.184595: writeback_single_inode: bdi 8:0: ino=268628725 state=I_DIRTY_SYNC age=1476 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.184597: writeback_single_inode: bdi 8:0: ino=268628726 state=I_DIRTY_SYNC age=1476 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.184599: writeback_single_inode: bdi 8:0: ino=268628727 state=I_DIRTY_SYNC age=1476 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.184602: writeback_single_inode: bdi 8:0: ino=134218295 state=I_DIRTY_SYNC age=1476 index=0 to_write=1024 wrote=0
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              dd-2975  [000]  2468.184744: writeback_single_inode: bdi 8:0: ino=134230317 state=I_DIRTY_SYNC age=1457 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.184746: writeback_single_inode: bdi 8:0: ino=134230318 state=I_DIRTY_SYNC age=1457 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.184749: writeback_single_inode: bdi 8:0: ino=134230319 state=I_DIRTY_SYNC age=1457 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.184751: writeback_single_inode: bdi 8:0: ino=134230320 state=I_DIRTY_SYNC age=1457 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.184753: writeback_single_inode: bdi 8:0: ino=134230321 state=I_DIRTY_SYNC age=1457 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.184755: writeback_single_inode: bdi 8:0: ino=134230322 state=I_DIRTY_SYNC age=1457 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.184758: writeback_single_inode: bdi 8:0: ino=134230323 state=I_DIRTY_SYNC age=1456 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.184760: writeback_single_inode: bdi 8:0: ino=134230324 state=I_DIRTY_SYNC age=1456 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.184762: writeback_single_inode: bdi 8:0: ino=134230325 state=I_DIRTY_SYNC age=1456 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.184764: writeback_single_inode: bdi 8:0: ino=134230326 state=I_DIRTY_SYNC age=1456 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.184767: writeback_single_inode: bdi 8:0: ino=134230327 state=I_DIRTY_SYNC age=1456 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.184769: writeback_single_inode: bdi 8:0: ino=134230328 state=I_DIRTY_SYNC age=1456 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.184771: writeback_single_inode: bdi 8:0: ino=134230329 state=I_DIRTY_SYNC age=1456 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.184773: writeback_single_inode: bdi 8:0: ino=134230330 state=I_DIRTY_SYNC age=1456 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.184776: writeback_single_inode: bdi 8:0: ino=134230331 state=I_DIRTY_SYNC age=1455 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.184778: writeback_single_inode: bdi 8:0: ino=134230332 state=I_DIRTY_SYNC age=1455 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.184780: writeback_single_inode: bdi 8:0: ino=134230333 state=I_DIRTY_SYNC age=1455 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.184782: writeback_single_inode: bdi 8:0: ino=134230334 state=I_DIRTY_SYNC age=1455 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.184785: writeback_single_inode: bdi 8:0: ino=134230335 state=I_DIRTY_SYNC age=1455 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.184787: writeback_single_inode: bdi 8:0: ino=134230336 state=I_DIRTY_SYNC age=1455 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.184789: writeback_single_inode: bdi 8:0: ino=134230337 state=I_DIRTY_SYNC age=1455 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.184791: writeback_single_inode: bdi 8:0: ino=134230338 state=I_DIRTY_SYNC age=1455 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.184793: writeback_single_inode: bdi 8:0: ino=134230339 state=I_DIRTY_SYNC age=1455 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.184795: writeback_single_inode: bdi 8:0: ino=134230340 state=I_DIRTY_SYNC age=1454 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.184798: writeback_single_inode: bdi 8:0: ino=134230341 state=I_DIRTY_SYNC age=1454 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.184800: writeback_single_inode: bdi 8:0: ino=134230342 state=I_DIRTY_SYNC age=1454 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.184802: writeback_single_inode: bdi 8:0: ino=134230343 state=I_DIRTY_SYNC age=1454 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.184804: writeback_single_inode: bdi 8:0: ino=134230344 state=I_DIRTY_SYNC age=1454 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.184806: writeback_single_inode: bdi 8:0: ino=134230345 state=I_DIRTY_SYNC age=1454 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.184809: writeback_single_inode: bdi 8:0: ino=134230346 state=I_DIRTY_SYNC age=1454 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.184811: writeback_single_inode: bdi 8:0: ino=134230347 state=I_DIRTY_SYNC age=1454 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.184813: writeback_single_inode: bdi 8:0: ino=134230348 state=I_DIRTY_SYNC age=1454 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.184815: writeback_single_inode: bdi 8:0: ino=134230349 state=I_DIRTY_SYNC age=1453 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.184817: writeback_single_inode: bdi 8:0: ino=134230350 state=I_DIRTY_SYNC age=1453 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.184820: writeback_single_inode: bdi 8:0: ino=134230351 state=I_DIRTY_SYNC age=1431 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.184822: writeback_single_inode: bdi 8:0: ino=134230352 state=I_DIRTY_SYNC age=1431 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.184824: writeback_single_inode: bdi 8:0: ino=134230353 state=I_DIRTY_SYNC age=1430 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.184826: writeback_single_inode: bdi 8:0: ino=134230354 state=I_DIRTY_SYNC age=1430 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.184828: writeback_single_inode: bdi 8:0: ino=134230355 state=I_DIRTY_SYNC age=1430 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.184831: writeback_single_inode: bdi 8:0: ino=134230356 state=I_DIRTY_SYNC age=1430 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.184833: writeback_single_inode: bdi 8:0: ino=134230357 state=I_DIRTY_SYNC age=1430 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.184835: writeback_single_inode: bdi 8:0: ino=134230358 state=I_DIRTY_SYNC age=1430 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.184837: writeback_single_inode: bdi 8:0: ino=134230359 state=I_DIRTY_SYNC age=1430 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.184839: writeback_single_inode: bdi 8:0: ino=134230360 state=I_DIRTY_SYNC age=1429 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.184841: writeback_single_inode: bdi 8:0: ino=134230361 state=I_DIRTY_SYNC age=1429 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.184844: writeback_single_inode: bdi 8:0: ino=134230362 state=I_DIRTY_SYNC age=1429 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.184846: writeback_single_inode: bdi 8:0: ino=134230363 state=I_DIRTY_SYNC age=1429 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.184848: writeback_single_inode: bdi 8:0: ino=134230364 state=I_DIRTY_SYNC age=1429 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.184850: writeback_single_inode: bdi 8:0: ino=134230365 state=I_DIRTY_SYNC age=1429 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.184852: writeback_single_inode: bdi 8:0: ino=134230366 state=I_DIRTY_SYNC age=1429 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.184855: writeback_single_inode: bdi 8:0: ino=134230367 state=I_DIRTY_SYNC age=1429 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.184857: writeback_single_inode: bdi 8:0: ino=134230368 state=I_DIRTY_SYNC age=1428 index=0 to_write=1024 wrote=0
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              dd-2975  [000]  2468.184861: writeback_single_inode: bdi 8:0: ino=134230370 state=I_DIRTY_SYNC age=1428 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.184863: writeback_single_inode: bdi 8:0: ino=134230371 state=I_DIRTY_SYNC age=1428 index=0 to_write=1024 wrote=0
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              dd-2975  [000]  2468.184868: writeback_single_inode: bdi 8:0: ino=134230373 state=I_DIRTY_SYNC age=1428 index=0 to_write=1024 wrote=0
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              dd-2975  [000]  2468.184876: writeback_single_inode: bdi 8:0: ino=134230377 state=I_DIRTY_SYNC age=1427 index=0 to_write=1024 wrote=0
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              dd-2975  [000]  2468.184887: writeback_single_inode: bdi 8:0: ino=134230382 state=I_DIRTY_SYNC age=1427 index=0 to_write=1024 wrote=0
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              dd-2975  [000]  2468.184907: writeback_single_inode: bdi 8:0: ino=402653468 state=I_DIRTY_SYNC age=1426 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.184909: writeback_single_inode: bdi 8:0: ino=402653469 state=I_DIRTY_SYNC age=1425 index=0 to_write=1024 wrote=0
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              dd-2975  [000]  2468.185018: writeback_single_inode: bdi 8:0: ino=402659600 state=I_DIRTY_SYNC age=1420 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.185020: writeback_single_inode: bdi 8:0: ino=402659601 state=I_DIRTY_SYNC age=1420 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.185022: writeback_single_inode: bdi 8:0: ino=402659602 state=I_DIRTY_SYNC age=1420 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.185024: writeback_single_inode: bdi 8:0: ino=402659603 state=I_DIRTY_SYNC age=1420 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.185027: writeback_single_inode: bdi 8:0: ino=402659604 state=I_DIRTY_SYNC age=1420 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.185029: writeback_single_inode: bdi 8:0: ino=402659605 state=I_DIRTY_SYNC age=1420 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.185031: writeback_single_inode: bdi 8:0: ino=402659606 state=I_DIRTY_SYNC age=1419 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.185033: writeback_single_inode: bdi 8:0: ino=2101734 state=I_DIRTY_SYNC age=1419 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.185036: writeback_single_inode: bdi 8:0: ino=2101735 state=I_DIRTY_SYNC age=1419 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.185038: writeback_single_inode: bdi 8:0: ino=2101736 state=I_DIRTY_SYNC age=1419 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.185040: writeback_single_inode: bdi 8:0: ino=2101737 state=I_DIRTY_SYNC age=1419 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.185042: writeback_single_inode: bdi 8:0: ino=2101738 state=I_DIRTY_SYNC age=1419 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.185044: writeback_single_inode: bdi 8:0: ino=134230394 state=I_DIRTY_SYNC age=1418 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.185047: writeback_single_inode: bdi 8:0: ino=134230395 state=I_DIRTY_SYNC age=1418 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.185049: writeback_single_inode: bdi 8:0: ino=134230397 state=I_DIRTY_SYNC age=1418 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.185051: writeback_single_inode: bdi 8:0: ino=134230398 state=I_DIRTY_SYNC age=1418 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.185053: writeback_single_inode: bdi 8:0: ino=134230399 state=I_DIRTY_SYNC age=1418 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.185055: writeback_single_inode: bdi 8:0: ino=134230400 state=I_DIRTY_SYNC age=1417 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.185058: writeback_single_inode: bdi 8:0: ino=134230401 state=I_DIRTY_SYNC age=1417 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.185060: writeback_single_inode: bdi 8:0: ino=134230402 state=I_DIRTY_SYNC age=1417 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.185062: writeback_single_inode: bdi 8:0: ino=134230403 state=I_DIRTY_SYNC age=1417 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.185064: writeback_single_inode: bdi 8:0: ino=134230404 state=I_DIRTY_SYNC age=1417 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.185066: writeback_single_inode: bdi 8:0: ino=134230405 state=I_DIRTY_SYNC age=1416 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.185069: writeback_single_inode: bdi 8:0: ino=134230406 state=I_DIRTY_SYNC age=1416 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.185071: writeback_single_inode: bdi 8:0: ino=134230407 state=I_DIRTY_SYNC age=1416 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.185073: writeback_single_inode: bdi 8:0: ino=134230408 state=I_DIRTY_SYNC age=1416 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.185075: writeback_single_inode: bdi 8:0: ino=134230409 state=I_DIRTY_SYNC age=1416 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.185077: writeback_single_inode: bdi 8:0: ino=134230410 state=I_DIRTY_SYNC age=1415 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.185079: writeback_single_inode: bdi 8:0: ino=134230411 state=I_DIRTY_SYNC age=1415 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.185082: writeback_single_inode: bdi 8:0: ino=134230412 state=I_DIRTY_SYNC age=1415 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.185084: writeback_single_inode: bdi 8:0: ino=134230413 state=I_DIRTY_SYNC age=1415 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.185086: writeback_single_inode: bdi 8:0: ino=134230414 state=I_DIRTY_SYNC age=1414 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.185088: writeback_single_inode: bdi 8:0: ino=134230415 state=I_DIRTY_SYNC age=1414 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.185090: writeback_single_inode: bdi 8:0: ino=134230416 state=I_DIRTY_SYNC age=1414 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.185093: writeback_single_inode: bdi 8:0: ino=134230417 state=I_DIRTY_SYNC age=1414 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.185095: writeback_single_inode: bdi 8:0: ino=134230418 state=I_DIRTY_SYNC age=1413 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.185097: writeback_single_inode: bdi 8:0: ino=134230419 state=I_DIRTY_SYNC age=1413 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.185099: writeback_single_inode: bdi 8:0: ino=134230420 state=I_DIRTY_SYNC age=1413 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.185101: writeback_single_inode: bdi 8:0: ino=134230421 state=I_DIRTY_SYNC age=1413 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.185103: writeback_single_inode: bdi 8:0: ino=134230422 state=I_DIRTY_SYNC age=1413 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.185106: writeback_single_inode: bdi 8:0: ino=134230423 state=I_DIRTY_SYNC age=1412 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.185108: writeback_single_inode: bdi 8:0: ino=134230424 state=I_DIRTY_SYNC age=1412 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.185110: writeback_single_inode: bdi 8:0: ino=134230425 state=I_DIRTY_SYNC age=1412 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.185112: writeback_single_inode: bdi 8:0: ino=268633717 state=I_DIRTY_SYNC age=1412 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.185114: writeback_single_inode: bdi 8:0: ino=268633718 state=I_DIRTY_SYNC age=1412 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.185117: writeback_single_inode: bdi 8:0: ino=268633719 state=I_DIRTY_SYNC age=1412 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.185119: writeback_single_inode: bdi 8:0: ino=268633720 state=I_DIRTY_SYNC age=1411 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.185121: writeback_single_inode: bdi 8:0: ino=268633721 state=I_DIRTY_SYNC age=1411 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.185123: writeback_single_inode: bdi 8:0: ino=134230426 state=I_DIRTY_SYNC age=1411 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.185125: writeback_single_inode: bdi 8:0: ino=134230427 state=I_DIRTY_SYNC age=1411 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.185128: writeback_single_inode: bdi 8:0: ino=134230428 state=I_DIRTY_SYNC age=1410 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.185130: writeback_single_inode: bdi 8:0: ino=402659608 state=I_DIRTY_SYNC age=1410 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.185132: writeback_single_inode: bdi 8:0: ino=402659609 state=I_DIRTY_SYNC age=1410 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.185134: writeback_single_inode: bdi 8:0: ino=402659610 state=I_DIRTY_SYNC age=1410 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.185136: writeback_single_inode: bdi 8:0: ino=402659611 state=I_DIRTY_SYNC age=1410 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.185138: writeback_single_inode: bdi 8:0: ino=402659612 state=I_DIRTY_SYNC age=1410 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.185141: writeback_single_inode: bdi 8:0: ino=402659613 state=I_DIRTY_SYNC age=1409 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.185143: writeback_single_inode: bdi 8:0: ino=402659614 state=I_DIRTY_SYNC age=1409 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.185145: writeback_single_inode: bdi 8:0: ino=402659615 state=I_DIRTY_SYNC age=1408 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.185147: writeback_single_inode: bdi 8:0: ino=402659616 state=I_DIRTY_SYNC age=1408 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.185149: writeback_single_inode: bdi 8:0: ino=402659617 state=I_DIRTY_SYNC age=1408 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.185152: writeback_single_inode: bdi 8:0: ino=402659618 state=I_DIRTY_SYNC age=1408 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.185154: writeback_single_inode: bdi 8:0: ino=402659619 state=I_DIRTY_SYNC age=1407 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.185156: writeback_single_inode: bdi 8:0: ino=402659620 state=I_DIRTY_SYNC age=1384 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.185158: writeback_single_inode: bdi 8:0: ino=402659621 state=I_DIRTY_SYNC age=1384 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.185160: writeback_single_inode: bdi 8:0: ino=402659622 state=I_DIRTY_SYNC age=1384 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.185163: writeback_single_inode: bdi 8:0: ino=402659623 state=I_DIRTY_SYNC age=1383 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.185165: writeback_single_inode: bdi 8:0: ino=402659624 state=I_DIRTY_SYNC age=1383 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.185167: writeback_single_inode: bdi 8:0: ino=402659625 state=I_DIRTY_SYNC age=1383 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.185169: writeback_single_inode: bdi 8:0: ino=402659626 state=I_DIRTY_SYNC age=1383 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.185171: writeback_single_inode: bdi 8:0: ino=402659627 state=I_DIRTY_SYNC age=1383 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.185173: writeback_single_inode: bdi 8:0: ino=402659628 state=I_DIRTY_SYNC age=1383 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.185176: writeback_single_inode: bdi 8:0: ino=402659629 state=I_DIRTY_SYNC age=1383 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.185178: writeback_single_inode: bdi 8:0: ino=402659630 state=I_DIRTY_SYNC age=1382 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.185180: writeback_single_inode: bdi 8:0: ino=402659631 state=I_DIRTY_SYNC age=1382 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.185182: writeback_single_inode: bdi 8:0: ino=402659632 state=I_DIRTY_SYNC age=1382 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.185184: writeback_single_inode: bdi 8:0: ino=2101740 state=I_DIRTY_SYNC age=1382 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.185186: writeback_single_inode: bdi 8:0: ino=2101741 state=I_DIRTY_SYNC age=1381 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.185189: writeback_single_inode: bdi 8:0: ino=2101742 state=I_DIRTY_SYNC age=1381 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.185191: writeback_single_inode: bdi 8:0: ino=2101743 state=I_DIRTY_SYNC age=1381 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.185193: writeback_single_inode: bdi 8:0: ino=2101744 state=I_DIRTY_SYNC age=1380 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.185195: writeback_single_inode: bdi 8:0: ino=134230429 state=I_DIRTY_SYNC age=1380 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.185197: writeback_single_inode: bdi 8:0: ino=134230431 state=I_DIRTY_SYNC age=1380 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.185200: writeback_single_inode: bdi 8:0: ino=134230464 state=I_DIRTY_SYNC age=1380 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.185202: writeback_single_inode: bdi 8:0: ino=134230465 state=I_DIRTY_SYNC age=1380 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.185204: writeback_single_inode: bdi 8:0: ino=134230466 state=I_DIRTY_SYNC age=1379 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.185206: writeback_single_inode: bdi 8:0: ino=134230467 state=I_DIRTY_SYNC age=1379 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.185208: writeback_single_inode: bdi 8:0: ino=134230468 state=I_DIRTY_SYNC age=1378 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.185211: writeback_single_inode: bdi 8:0: ino=268633723 state=I_DIRTY_SYNC age=1378 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.185213: writeback_single_inode: bdi 8:0: ino=268633724 state=I_DIRTY_SYNC age=1378 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.185215: writeback_single_inode: bdi 8:0: ino=134230469 state=I_DIRTY_SYNC age=1377 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.185217: writeback_single_inode: bdi 8:0: ino=134230470 state=I_DIRTY_SYNC age=1377 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.185219: writeback_single_inode: bdi 8:0: ino=134230471 state=I_DIRTY_SYNC age=1376 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.185222: writeback_single_inode: bdi 8:0: ino=134230472 state=I_DIRTY_SYNC age=1374 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.185224: writeback_single_inode: bdi 8:0: ino=134230473 state=I_DIRTY_SYNC age=1374 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.185226: writeback_single_inode: bdi 8:0: ino=134230474 state=I_DIRTY_SYNC age=1373 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.185228: writeback_single_inode: bdi 8:0: ino=134230475 state=I_DIRTY_SYNC age=1372 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.185231: writeback_single_inode: bdi 8:0: ino=134230476 state=I_DIRTY_SYNC age=1372 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.185233: writeback_single_inode: bdi 8:0: ino=402659634 state=I_DIRTY_SYNC age=1371 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.185235: writeback_single_inode: bdi 8:0: ino=402659635 state=I_DIRTY_SYNC age=1371 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.185237: writeback_single_inode: bdi 8:0: ino=134230477 state=I_DIRTY_SYNC age=1370 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.185239: writeback_single_inode: bdi 8:0: ino=134230478 state=I_DIRTY_SYNC age=1370 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.185242: writeback_single_inode: bdi 8:0: ino=134230479 state=I_DIRTY_SYNC age=1369 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.185244: writeback_single_inode: bdi 8:0: ino=2101746 state=I_DIRTY_SYNC age=1369 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.185246: writeback_single_inode: bdi 8:0: ino=2101747 state=I_DIRTY_SYNC age=1369 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.185248: writeback_single_inode: bdi 8:0: ino=2101748 state=I_DIRTY_SYNC age=1368 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.185251: writeback_single_inode: bdi 8:0: ino=2101749 state=I_DIRTY_SYNC age=1368 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.185253: writeback_single_inode: bdi 8:0: ino=2101750 state=I_DIRTY_SYNC age=1368 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.185255: writeback_single_inode: bdi 8:0: ino=2101751 state=I_DIRTY_SYNC age=1368 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.185257: writeback_single_inode: bdi 8:0: ino=2101752 state=I_DIRTY_SYNC age=1368 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.185259: writeback_single_inode: bdi 8:0: ino=134230481 state=I_DIRTY_SYNC age=1367 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.185262: writeback_single_inode: bdi 8:0: ino=134230482 state=I_DIRTY_SYNC age=1367 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.185264: writeback_single_inode: bdi 8:0: ino=134230483 state=I_DIRTY_SYNC age=1367 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.185266: writeback_single_inode: bdi 8:0: ino=134230484 state=I_DIRTY_SYNC age=1366 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.185268: writeback_single_inode: bdi 8:0: ino=134230485 state=I_DIRTY_SYNC age=1366 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.185270: writeback_single_inode: bdi 8:0: ino=134230486 state=I_DIRTY_SYNC age=1366 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.185273: writeback_single_inode: bdi 8:0: ino=134230487 state=I_DIRTY_SYNC age=1366 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.185275: writeback_single_inode: bdi 8:0: ino=134230488 state=I_DIRTY_SYNC age=1365 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.185277: writeback_single_inode: bdi 8:0: ino=134230489 state=I_DIRTY_SYNC age=1365 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.185279: writeback_single_inode: bdi 8:0: ino=134230490 state=I_DIRTY_SYNC age=1365 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.185281: writeback_single_inode: bdi 8:0: ino=134230491 state=I_DIRTY_SYNC age=1364 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.185283: writeback_single_inode: bdi 8:0: ino=134230492 state=I_DIRTY_SYNC age=1364 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.185286: writeback_single_inode: bdi 8:0: ino=134230493 state=I_DIRTY_SYNC age=1364 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.185288: writeback_single_inode: bdi 8:0: ino=268633726 state=I_DIRTY_SYNC age=1364 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.185290: writeback_single_inode: bdi 8:0: ino=268633727 state=I_DIRTY_SYNC age=1363 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.185292: writeback_single_inode: bdi 8:0: ino=402659637 state=I_DIRTY_SYNC age=1363 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.185294: writeback_single_inode: bdi 8:0: ino=402659638 state=I_DIRTY_SYNC age=1363 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.185297: writeback_single_inode: bdi 8:0: ino=402659639 state=I_DIRTY_SYNC age=1363 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.185299: writeback_single_inode: bdi 8:0: ino=268628710 state=I_DIRTY_SYNC age=723 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.185301: writeback_single_inode: bdi 8:0: ino=268628711 state=I_DIRTY_SYNC age=716 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.185303: writeback_single_inode: bdi 8:0: ino=402659641 state=I_DIRTY_SYNC age=715 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.185305: writeback_single_inode: bdi 8:0: ino=134230494 state=I_DIRTY_SYNC age=715 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.185308: writeback_single_inode: bdi 8:0: ino=134230495 state=I_DIRTY_SYNC age=715 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.185310: writeback_single_inode: bdi 8:0: ino=134230496 state=I_DIRTY_SYNC age=715 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.185312: writeback_single_inode: bdi 8:0: ino=134230497 state=I_DIRTY_SYNC age=715 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.185314: writeback_single_inode: bdi 8:0: ino=134230498 state=I_DIRTY_SYNC age=714 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.185316: writeback_single_inode: bdi 8:0: ino=2101754 state=I_DIRTY_SYNC age=714 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.185319: writeback_single_inode: bdi 8:0: ino=2101755 state=I_DIRTY_SYNC age=714 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.185321: writeback_single_inode: bdi 8:0: ino=2101756 state=I_DIRTY_SYNC age=714 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.185323: writeback_single_inode: bdi 8:0: ino=134230499 state=I_DIRTY_SYNC age=713 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.185325: writeback_single_inode: bdi 8:0: ino=134230501 state=I_DIRTY_SYNC age=712 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.185327: writeback_single_inode: bdi 8:0: ino=134230502 state=I_DIRTY_SYNC age=712 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.185330: writeback_single_inode: bdi 8:0: ino=134230503 state=I_DIRTY_SYNC age=712 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.185332: writeback_single_inode: bdi 8:0: ino=134230504 state=I_DIRTY_SYNC age=711 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.185334: writeback_single_inode: bdi 8:0: ino=134230505 state=I_DIRTY_SYNC age=709 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.185336: writeback_single_inode: bdi 8:0: ino=134230506 state=I_DIRTY_SYNC age=709 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.185338: writeback_single_inode: bdi 8:0: ino=268633729 state=I_DIRTY_SYNC age=709 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.185341: writeback_single_inode: bdi 8:0: ino=268633730 state=I_DIRTY_SYNC age=709 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.185343: writeback_single_inode: bdi 8:0: ino=402659643 state=I_DIRTY_SYNC age=709 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.185345: writeback_single_inode: bdi 8:0: ino=402659644 state=I_DIRTY_SYNC age=709 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.185347: writeback_single_inode: bdi 8:0: ino=402659645 state=I_DIRTY_SYNC age=709 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.185349: writeback_single_inode: bdi 8:0: ino=402659646 state=I_DIRTY_SYNC age=709 index=0 to_write=1024 wrote=0
              dd-2975  [000]  2468.185352: writeback_single_inode: bdi 8:0: ino=402659647 state=I_DIRTY_SYNC age=709 index=0 to_write=1024 wrote=0

Re: [PATCH 6/6] writeback: refill b_io iff empty

[Dave Chinner]

On Tue, May 10, 2011 at 12:31:04PM +0800, Wu Fengguang wrote:
> On Fri, May 06, 2011 at 10:21:55PM +0800, Jan Kara wrote:
> > On Fri 06-05-11 13:29:55, Wu Fengguang wrote:
> > > On Fri, May 06, 2011 at 12:37:08AM +0800, Jan Kara wrote:
> > > > On Wed 04-05-11 15:39:31, Wu Fengguang wrote:
> > > > > To help understand the behavior change, I wrote the writeback_queue_io
> > > > > trace event, and found very different patterns between
> > > > > - vanilla kernel
> > > > > - this patchset plus the sync livelock fixes
> > > > > 
> > > > > Basically the vanilla kernel each time pulls a random number of inodes
> > > > > from b_dirty, while the patched kernel tends to pull a fixed number of
> > > > > inodes (enqueue=1031) from b_dirty. The new behavior is very interesting...
> > > >   This regularity is really strange. Did you have a chance to look more into
> > > > it? I find it highly unlikely that there would be exactly 1031 dirty inodes
> > > > in b_dirty list every time you call move_expired_inodes()...
> > > 
> > > Jan, I got some results for ext4. The total dd+tar+sync time is
> > > decreased from 177s to 167s. The other numbers are either raised or
> > > dropped.
> >   Nice, but what I was more curious about was to understand why you saw
> > enqueued=1031 all the time.
> 
> Maybe some unknown interactions with XFS? Attached is another trace
> with both writeback_single_inode and writeback_queue_io.

Perhaps because write throttling is limiting the number of files
being dirtied to match the number of files being cleaned? hence they
age at roughly the same rate as writeback is cleaning them?
Especially as most file are only a single page in size?

Or perhaps that is the rate at which IO completions are occurring
and updating the inode size and redirtying the inode? After all,
there are lots of inodes that are only state=I_DIRTY_SYNC and
wrote=0 in the traces around when it starts going to ~1000 inodes
per queue_io call....

Or maybe a combination of both?

Cheers,

Dave.
-- 
Dave Chinner
david@fromorbit.com

[PATCH 0/6] writeback: moving expire targets for background/kupdate works

[Wu Fengguang]

Andrew,

This aims to reduce possible pageout() calls by making the flusher
concentrate a bit more on old/expired dirty inodes.

Patches 04, 05 have been updated since last post, please review.
The concerns from last review have been addressed.

It runs fine on simple workloads over ext3/4, xfs, btrfs and NFS.

Trond, will you take the last patch? The fixed "bug" has no real impact for now.

make dirty expire time a moving target
        [PATCH 1/6] writeback: pass writeback_control down to move_expired_inodes()
        [PATCH 2/6] writeback: the kupdate expire timestamp should be a moving target
        [PATCH 3/6] writeback: sync expired inodes first in background writeback

loop condition fixes (the most tricky part)
        [PATCH 4/6] writeback: introduce writeback_control.inodes_cleaned
        [PATCH 5/6] writeback: try more writeback as long as something was written

NFS fix
        [PATCH 6/6] NFS: return -EAGAIN when skipped commit in nfs_commit_unstable_pages()

Thanks,
Fengguang

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[PATCH 1/6] writeback: pass writeback_control down to move_expired_inodes()

[Wu Fengguang]

[-- Attachment #1: writeback-pass-wbc-to-queue_io.patch --]
[-- Type: text/plain, Size: 2829 bytes --]

This is to prepare for moving the dirty expire policy to move_expired_inodes().
No behavior change.

Acked-by: Jan Kara <jack@suse.cz>
Acked-by: Mel Gorman <mel@csn.ul.ie>
Signed-off-by: Wu Fengguang <fengguang.wu@intel.com>
---
 fs/fs-writeback.c |   16 ++++++++--------
 1 file changed, 8 insertions(+), 8 deletions(-)

--- linux-next.orig/fs/fs-writeback.c	2011-04-19 10:18:17.000000000 +0800
+++ linux-next/fs/fs-writeback.c	2011-04-19 10:18:28.000000000 +0800
@@ -251,8 +251,8 @@ static bool inode_dirtied_after(struct i
  * Move expired dirty inodes from @delaying_queue to @dispatch_queue.
  */
 static void move_expired_inodes(struct list_head *delaying_queue,
-			       struct list_head *dispatch_queue,
-				unsigned long *older_than_this)
+				struct list_head *dispatch_queue,
+				struct writeback_control *wbc)
 {
 	LIST_HEAD(tmp);
 	struct list_head *pos, *node;
@@ -262,8 +262,8 @@ static void move_expired_inodes(struct l
 
 	while (!list_empty(delaying_queue)) {
 		inode = wb_inode(delaying_queue->prev);
-		if (older_than_this &&
-		    inode_dirtied_after(inode, *older_than_this))
+		if (wbc->older_than_this &&
+		    inode_dirtied_after(inode, *wbc->older_than_this))
 			break;
 		if (sb && sb != inode->i_sb)
 			do_sb_sort = 1;
@@ -299,11 +299,11 @@ static void move_expired_inodes(struct l
  *                                           |
  *                                           +--> dequeue for IO
  */
-static void queue_io(struct bdi_writeback *wb, unsigned long *older_than_this)
+static void queue_io(struct bdi_writeback *wb, struct writeback_control *wbc)
 {
 	assert_spin_locked(&inode_wb_list_lock);
 	list_splice_init(&wb->b_more_io, &wb->b_io);
-	move_expired_inodes(&wb->b_dirty, &wb->b_io, older_than_this);
+	move_expired_inodes(&wb->b_dirty, &wb->b_io, wbc);
 }
 
 static int write_inode(struct inode *inode, struct writeback_control *wbc)
@@ -579,7 +579,7 @@ void writeback_inodes_wb(struct bdi_writ
 		wbc->wb_start = jiffies; /* livelock avoidance */
 	spin_lock(&inode_wb_list_lock);
 	if (!wbc->for_kupdate || list_empty(&wb->b_io))
-		queue_io(wb, wbc->older_than_this);
+		queue_io(wb, wbc);
 
 	while (!list_empty(&wb->b_io)) {
 		struct inode *inode = wb_inode(wb->b_io.prev);
@@ -606,7 +606,7 @@ static void __writeback_inodes_sb(struct
 
 	spin_lock(&inode_wb_list_lock);
 	if (!wbc->for_kupdate || list_empty(&wb->b_io))
-		queue_io(wb, wbc->older_than_this);
+		queue_io(wb, wbc);
 	writeback_sb_inodes(sb, wb, wbc, true);
 	spin_unlock(&inode_wb_list_lock);
 }


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[PATCH 0/6] [RFC] writeback: try to write older pages first

[Wu Fengguang]

Andrew,

The basic way of avoiding pageout() is to make the flusher sync inodes in the
right order. Oldest dirty inodes contains oldest pages. The smaller inode it
is, the more correlation between inode dirty time and its pages' dirty time.
So for small dirty inodes, syncing in the order of inode dirty time is able to
avoid pageout(). If pageout() is still triggered frequently in this case, the
30s dirty expire time may be too long and could be shrinked adaptively; or it
may be a stressed memcg list whose dirty inodes/pages are more hard to track.

For a large dirty inode, it may flush lots of newly dirtied pages _after_
syncing the expired pages. This is the normal case for a single-stream
sequential dirtier, where older pages are in lower offsets.  In this case we
shall not insist on syncing the whole large dirty inode before considering the
other small dirty inodes. This risks wasting time syncing 1GB freshly dirtied
pages before syncing the other N*1MB expired dirty pages who are approaching
the end of the LRU list and hence pageout().

For a large dirty inode, it may also flush lots of newly dirtied pages _before_
hitting the desired old ones, in which case it helps for pageout() to do some
clustered writeback, and/or set mapping->writeback_index to help the flusher
focus on old pages.

For a large dirty inode, it may also have intermixed old and new dirty pages.
In this case we need to make sure the inode is queued for IO before some of
its pages hit pageout(). Adaptive dirty expire time helps here.

OK, end of the vapour ideas. As for this patchset, it fixes the current
kupdate/background writeback priority:

- the kupdate/background writeback shall include newly expired inodes at each
  queue_io() time, as the large inodes left over from previous writeback rounds
  are likely to have less density of old pages.

- the background writeback shall consider expired inodes first, just like the
  kupdate writeback

Thanks,
Fengguang

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[PATCH 1/6] writeback: pass writeback_control down to move_expired_inodes()

[Wu Fengguang]

[-- Attachment #1: writeback-pass-wbc-to-queue_io.patch --]
[-- Type: text/plain, Size: 2683 bytes --]

This is to prepare for moving the dirty expire policy to move_expired_inodes().
No behavior change.

Signed-off-by: Wu Fengguang <fengguang.wu@intel.com>
---
 fs/fs-writeback.c |   16 ++++++++--------
 1 file changed, 8 insertions(+), 8 deletions(-)

--- linux-next.orig/fs/fs-writeback.c	2010-07-21 20:12:38.000000000 +0800
+++ linux-next/fs/fs-writeback.c	2010-07-21 20:14:38.000000000 +0800
@@ -213,8 +213,8 @@ static bool inode_dirtied_after(struct i
  * Move expired dirty inodes from @delaying_queue to @dispatch_queue.
  */
 static void move_expired_inodes(struct list_head *delaying_queue,
-			       struct list_head *dispatch_queue,
-				unsigned long *older_than_this)
+				struct list_head *dispatch_queue,
+				struct writeback_control *wbc)
 {
 	LIST_HEAD(tmp);
 	struct list_head *pos, *node;
@@ -224,8 +224,8 @@ static void move_expired_inodes(struct l
 
 	while (!list_empty(delaying_queue)) {
 		inode = list_entry(delaying_queue->prev, struct inode, i_list);
-		if (older_than_this &&
-		    inode_dirtied_after(inode, *older_than_this))
+		if (wbc->older_than_this &&
+		    inode_dirtied_after(inode, *wbc->older_than_this))
 			break;
 		if (sb && sb != inode->i_sb)
 			do_sb_sort = 1;
@@ -257,10 +257,10 @@ static void move_expired_inodes(struct l
  *                 => b_more_io inodes
  *                 => remaining inodes in b_io => (dequeue for sync)
  */
-static void queue_io(struct bdi_writeback *wb, unsigned long *older_than_this)
+static void queue_io(struct bdi_writeback *wb, struct writeback_control *wbc)
 {
 	list_splice_init(&wb->b_more_io, &wb->b_io);
-	move_expired_inodes(&wb->b_dirty, &wb->b_io, older_than_this);
+	move_expired_inodes(&wb->b_dirty, &wb->b_io, wbc);
 }
 
 static int write_inode(struct inode *inode, struct writeback_control *wbc)
@@ -519,7 +519,7 @@ void writeback_inodes_wb(struct bdi_writ
 	wbc->wb_start = jiffies; /* livelock avoidance */
 	spin_lock(&inode_lock);
 	if (!wbc->for_kupdate || list_empty(&wb->b_io))
-		queue_io(wb, wbc->older_than_this);
+		queue_io(wb, wbc);
 
 	while (!list_empty(&wb->b_io)) {
 		struct inode *inode = list_entry(wb->b_io.prev,
@@ -548,7 +548,7 @@ static void __writeback_inodes_sb(struct
 	wbc->wb_start = jiffies; /* livelock avoidance */
 	spin_lock(&inode_lock);
 	if (!wbc->for_kupdate || list_empty(&wb->b_io))
-		queue_io(wb, wbc->older_than_this);
+		queue_io(wb, wbc);
 	writeback_sb_inodes(sb, wb, wbc, true);
 	spin_unlock(&inode_lock);
 }


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Re: [PATCH 1/6] writeback: pass writeback_control down to move_expired_inodes()

[Jan Kara]

On Thu 22-07-10 13:09:29, Wu Fengguang wrote:
> This is to prepare for moving the dirty expire policy to move_expired_inodes().
> No behavior change.
  Looks OK.

Acked-by: Jan Kara <jack@suse.cz>

> Signed-off-by: Wu Fengguang <fengguang.wu@intel.com>
> ---
>  fs/fs-writeback.c |   16 ++++++++--------
>  1 file changed, 8 insertions(+), 8 deletions(-)
> 
> --- linux-next.orig/fs/fs-writeback.c	2010-07-21 20:12:38.000000000 +0800
> +++ linux-next/fs/fs-writeback.c	2010-07-21 20:14:38.000000000 +0800
> @@ -213,8 +213,8 @@ static bool inode_dirtied_after(struct i
>   * Move expired dirty inodes from @delaying_queue to @dispatch_queue.
>   */
>  static void move_expired_inodes(struct list_head *delaying_queue,
> -			       struct list_head *dispatch_queue,
> -				unsigned long *older_than_this)
> +				struct list_head *dispatch_queue,
> +				struct writeback_control *wbc)
>  {
>  	LIST_HEAD(tmp);
>  	struct list_head *pos, *node;
> @@ -224,8 +224,8 @@ static void move_expired_inodes(struct l
>  
>  	while (!list_empty(delaying_queue)) {
>  		inode = list_entry(delaying_queue->prev, struct inode, i_list);
> -		if (older_than_this &&
> -		    inode_dirtied_after(inode, *older_than_this))
> +		if (wbc->older_than_this &&
> +		    inode_dirtied_after(inode, *wbc->older_than_this))
>  			break;
>  		if (sb && sb != inode->i_sb)
>  			do_sb_sort = 1;
> @@ -257,10 +257,10 @@ static void move_expired_inodes(struct l
>   *                 => b_more_io inodes
>   *                 => remaining inodes in b_io => (dequeue for sync)
>   */
> -static void queue_io(struct bdi_writeback *wb, unsigned long *older_than_this)
> +static void queue_io(struct bdi_writeback *wb, struct writeback_control *wbc)
>  {
>  	list_splice_init(&wb->b_more_io, &wb->b_io);
> -	move_expired_inodes(&wb->b_dirty, &wb->b_io, older_than_this);
> +	move_expired_inodes(&wb->b_dirty, &wb->b_io, wbc);
>  }
>  
>  static int write_inode(struct inode *inode, struct writeback_control *wbc)
> @@ -519,7 +519,7 @@ void writeback_inodes_wb(struct bdi_writ
>  	wbc->wb_start = jiffies; /* livelock avoidance */
>  	spin_lock(&inode_lock);
>  	if (!wbc->for_kupdate || list_empty(&wb->b_io))
> -		queue_io(wb, wbc->older_than_this);
> +		queue_io(wb, wbc);
>  
>  	while (!list_empty(&wb->b_io)) {
>  		struct inode *inode = list_entry(wb->b_io.prev,
> @@ -548,7 +548,7 @@ static void __writeback_inodes_sb(struct
>  	wbc->wb_start = jiffies; /* livelock avoidance */
>  	spin_lock(&inode_lock);
>  	if (!wbc->for_kupdate || list_empty(&wb->b_io))
> -		queue_io(wb, wbc->older_than_this);
> +		queue_io(wb, wbc);
>  	writeback_sb_inodes(sb, wb, wbc, true);
>  	spin_unlock(&inode_lock);
>  }
> 
> 
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-- 
Jan Kara <jack@suse.cz>
SUSE Labs, CR

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Re: [PATCH 1/6] writeback: pass writeback_control down to move_expired_inodes()

[Mel Gorman]

On Thu, Jul 22, 2010 at 01:09:29PM +0800, Wu Fengguang wrote:
> This is to prepare for moving the dirty expire policy to move_expired_inodes().
> No behavior change.
> 
> Signed-off-by: Wu Fengguang <fengguang.wu@intel.com>

Can't see any problem.

Acked-by: Mel Gorman <mel@csn.ul.ie>

-- 
Mel Gorman
Part-time Phd Student                          Linux Technology Center
University of Limerick                         IBM Dublin Software Lab

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Re: [PATCH 1/6] writeback: pass writeback_control down to move_expired_inodes()

[Minchan Kim]

On Thu, Jul 22, 2010 at 01:09:29PM +0800, Wu Fengguang wrote:
> This is to prepare for moving the dirty expire policy to move_expired_inodes().
> No behavior change.
> 
> Signed-off-by: Wu Fengguang <fengguang.wu@intel.com>
Reviewed-by: Minchan Kim <minchan.kim@gmail.com>

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Kind regards,
Minchan Kim

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