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* Bug in MDADM or just crappy computer?
@ 2005-02-20  8:11 Phantazm
  2005-02-20  9:41 ` Phantazm
                   ` (2 more replies)
  0 siblings, 3 replies; 4+ messages in thread
From: Phantazm @ 2005-02-20  8:11 UTC (permalink / raw)
  To: linux-raid

My resync problem still goes on :-(

When the resync is done on my raid5 with 8 disks just goes into a loop and 
marks 2 disks as failed.

Then i need to reboot and assemble them again with the force. (the 2 disks 
thats failing isnt on same controller card)

And the kernel log is filled up with this.

Feb 20 08:43:13 [kernel] md: md0: sync done.
Feb 20 08:43:13 [kernel] md: syncing RAID array md0
Feb 20 08:43:13 [kernel] md: minimum _guaranteed_ reconstruction speed: 5000 
KB/sec/disc.
Feb 20 08:43:13 [kernel] md: md0: sync done.
Feb 20 08:43:13 [kernel] .<6>md: syncing RAID array md0
Feb 20 08:43:13 [kernel] md: minimum _guaranteed_ reconstruction speed: 5000 
KB/sec/disc.
Feb 20 08:43:13 [kernel] .<6>md: syncing RAID array md0
Feb 20 08:43:13 [kernel] md: minimum _guaranteed_ reconstruction speed: 5000 
KB/sec/disc.
Feb 20 08:43:13 [kernel] md: syncing RAID array md0
Feb 20 08:43:13 [kernel] md: minimum _guaranteed_ reconstruction speed: 5000 
KB/sec/disc.
Feb 20 08:43:13 [kernel] md: using maximum available idle IO bandwith (but 
not more than 15000 KB/sec) for reconstruction.
Feb 20 08:43:13 [kernel] md: using 128k window, over a total of 199141632 
blocks.
Feb 20 08:43:13 [kernel] md: md0: sync done.
Feb 20 08:43:13 [kernel] .<6>md: syncing RAID array md0
Feb 20 08:43:13 [kernel] md: minimum _guaranteed_ reconstruction speed: 5000 
KB/sec/disc.
Feb 20 08:43:13 [kernel] .<6>md: syncing RAID array md0
Feb 20 08:43:13 [kernel] md: minimum _guaranteed_ reconstruction speed: 5000 
KB/sec/disc.
Feb 20 08:43:13 [kernel] .<6>md: syncing RAID array md0
Feb 20 08:43:13 [kernel] md: minimum _guaranteed_ reconstruction speed: 5000 
KB/sec/disc.
Feb 20 08:43:13 [kernel] .<6>md: syncing RAID array md0
Feb 20 08:43:13 [kernel] md: minimum _guaranteed_ reconstruction speed: 5000 
KB/sec/disc.
Feb 20 08:43:13 [kernel] .<6>md: syncing RAID array md0
Feb 20 08:43:13 [kernel] md: minimum _guaranteed_ reconstruction speed: 5000 
KB/sec/disc.
Feb 20 08:43:13 [kernel] .<6>md: syncing RAID array md0
Feb 20 08:43:13 [kernel] md: minimum _guaranteed_ reconstruction speed: 5000 
KB/sec/disc.
Feb 20 08:43:13 [kernel] md: syncing RAID array md0
Feb 20 08:43:13 [kernel] md: minimum _guaranteed_ reconstruction speed: 5000 
KB/sec/disc.
Feb 20 08:43:13 [kernel] md: using maximum available idle IO bandwith (but 
not more than 15000 KB/sec) for reconstruction.
Feb 20 08:43:13 [kernel] md: using 128k window, over a total of 199141632 
blocks.
Feb 20 08:43:13 [kernel] md: md0: sync done.
Feb 20 08:43:13 [kernel] md: syncing RAID array md0
Feb 20 08:43:13 [kernel] md: minimum _guaranteed_ reconstruction speed: 5000 
KB/sec/disc.
Feb 20 08:43:13 [kernel] md: using maximum available idle IO bandwith (but 
not more than 15000 KB/sec) for reconstruction.
Feb 20 08:43:13 [kernel] md: using 128k window, over a total of 199141632 
blocks.
Feb 20 08:43:13 [kernel] md: md0: sync done.
Feb 20 08:43:13 [kernel] md: syncing RAID array md0
Feb 20 08:43:13 [kernel] md: minimum _guaranteed_ reconstruction speed: 5000 
KB/sec/disc.
Feb 20 08:43:13 [kernel] md: using maximum available idle IO bandwith (but 
not more than 15000 KB/sec) for reconstruction.
Feb 20 08:43:13 [kernel] md: using 128k window, over a total of 199141632 
blocks.


aint got a single clue what it could be.

I have tried this patch too..

(The disks are not broken, that i know for sure)

--------------------------------------------

Fix endless loop when syncing an array that doesn't need any resync.

If the resync checkpoint for an array is at the end of the array, It doesn't 
get set to MAX_SECTOR, so resyncing will be retried.

By updating curr_resync early, this problem is fixed.

Signed-off-by: Neil Brown <neilb@cse.unsw.edu.au>

### Diffstat output

./drivers/md/md.c | 6 ++++--

1 files changed, 4 insertions(+), 2 deletions(-)

diff ./drivers/md/md.c~current~ ./drivers/md/md.c

--- ./drivers/md/md.c~current~ 2005-02-02 12:08:42.000000000 +1100

+++ ./drivers/md/md.c 2005-02-02 12:08:53.000000000 +1100

@@ -3472,10 +3472,12 @@ static void md_do_sync(mddev_t *mddev)

init_waitqueue_head(&mddev->recovery_wait);

last_check = 0;


- if (j)

+ if (j>2) {

printk(KERN_INFO

"md: resuming recovery of %s from checkpoint.\n",

mdname(mddev));

+ mddev->curr_resync = j;

+ }


while (j < max_sectors) {

int sectors;

@@ -3562,7 +3564,7 @@ static void md_do_sync(mddev_t *mddev)


if (!test_bit(MD_RECOVERY_ERR, &mddev->recovery) &&

mddev->curr_resync > 2 &&

- mddev->curr_resync > mddev->recovery_cp) {

+ mddev->curr_resync >= mddev->recovery_cp) {

if (test_bit(MD_RECOVERY_INTR, &mddev->recovery)) {

printk(KERN_INFO

"md: checkpointing recovery of %s.\n",




^ permalink raw reply	[flat|nested] 4+ messages in thread

end of thread, other threads:[~2005-04-22 12:26 UTC | newest]

Thread overview: 4+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2005-02-20  8:11 Bug in MDADM or just crappy computer? Phantazm
2005-02-20  9:41 ` Phantazm
2005-02-20 10:38 ` Phantazm
2005-04-22 12:26 ` Molle Bestefich

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