Re: pdflush stuck in D state with v2.6.24-rc1-192-gef49c32

[Florin Iucha <florin@iucha.net>]

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On Thu, Nov 01, 2007 at 03:15:32PM +0800, Fengguang Wu wrote:
> On Wed, Oct 31, 2007 at 12:53:18PM -0500, Florin Iucha wrote:
> > This patch does not fix anything for me.  Even such light use of the
> > reiserfs filesystem as pulling the linux-2.6 git tree updates caused
> > one CPU to go to 75% iowait.
>  
> Thank you, Florin. Could you provide more details about sda7, such as
> the mount option and output of `reiserfstune /dev/sda7`? I'll try to
> reproduce it before asking for your help.

Fengguang,

root@zeus:~# mount | grep sda7
/dev/sda7 on /scratch type reiserfs (rw,noatime)
root@zeus:~# df -h /scratch/
Filesystem            Size  Used Avail Use% Mounted on
/dev/sda7              38G   32G  5.7G  85% /scratch
root@zeus:~# umount /dev/sda7
root@zeus:~# reiserfstune /dev/sda7
reiserfstune: Journal device has not been specified. Assuming journal is on the main device (/dev/sda7).

Current parameters:

Filesystem state: consistent

/scratch: Reiserfs super block in block 16 on 0x807 of format 3.6 with standard journal
Count of blocks on the device: 9765504
Number of bitmaps: 299
Blocksize: 4096
Free blocks (count of blocks - used [journal, bitmaps, data, reserved] blocks): 1471399
Root block: 2359332
Filesystem is clean
Tree height: 5
Hash function used to sort names: "r5"
Objectid map size 916, max 972
Journal parameters:
        Device [0x0]
        Magic [0x31037e64]
        Size 8193 blocks (including 1 for journal header) (first block 18)
        Max transaction length 1024 blocks
        Max batch size 900 blocks
        Max commit age 30
Blocks reserved by journal: 0
Fs state field: 0x0:
sb_version: 2
inode generation number: 5856766
UUID: a0191e80-be6e-47f6-8fd0-047e2d763a4a
LABEL: /scratch
Set flags in SB:
        ATTRIBUTES CLEAN

And for bonus points:
###########
reiserfsck --check started at Thu Nov  1 07:09:56 2007
###########
Replaying journal..
Reiserfs journal '/dev/sda7' in blocks [18..8211]: 0 transactions replayed
Checking internal tree..finished                               
Comparing bitmaps..finished
Checking Semantic tree:
finished                                                                       
No corruptions found
There are on the filesystem:
        Leaves 247231
        Internal nodes 1570
        Directories 11330
        Other files 722878
        Data block pointers 8040675 (3880 of them are zero)
        Safe links 0
###########
reiserfsck finished at Thu Nov  1 07:18:43 2007
###########

Cheers,
florin

-- 
Bruce Schneier expects the Spanish Inquisition.
      http://geekz.co.uk/schneierfacts/fact/163

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