Hello Neil ,
On Tue, 22 Jul 2008, Neil Brown wrote:
On Monday July 21, babydr@xxxxxxxxxxxxxxxx wrote:
INFO: task pdflush:393 blocked for more than 120 seconds.
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
pdflush D c8209f80 4748 393 2
f75e5e58 00000046 f7f7ad50 c8209f80 f7f7a8a0 f75e5e24 c014fc57 00000000
f7f7a8a0 e5d0dd00 c8209f80 f75e4000 c0819e00 c8209f80 f7f7aaf4 f75e5e44
00000286 f75e5e80 f510de30 f75e5e58 c0142233 f510de00 f75e5e80 f510de30
Call Trace:
[<c014fc57>] ? mark_held_locks+0x67/0x80
[<c0142233>] ? add_wait_queue+0x33/0x50
[<c03a7f85>] xfs_buf_wait_unpin+0xb5/0xe0
[<c0127a60>] ? default_wake_function+0x0/0x10
[<c0127a60>] ? default_wake_function+0x0/0x10
[<c03a84fb>] xfs_buf_iorequest+0x4b/0x80
[<c03adeee>] xfs_bdstrat_cb+0x3e/0x50
[<c03a495c>] xfs_bwrite+0x5c/0xe0
[<c039e941>] xfs_syncsub+0x121/0x2b0
[<c018a43b>] ? lock_super+0x1b/0x20
[<c018a43b>] ? lock_super+0x1b/0x20
[<c039e1d8>] xfs_sync+0x48/0x70
[<c03af833>] xfs_fs_write_super+0x23/0x30
[<c018a80f>] sync_supers+0xaf/0xc0
Looks a lot like an XFS problem to me.
Or at least, XFS people would be able to interpret this stack the
best.
Hmm , Ok , I'll post there , I can provide a -complete- boot ->
renboot log of the actions , But it ain't small ~ 649K . So I'll post that on
the back of my website , ie:
http://www.baby-dragons.com/bonnie++1.03c-2.6.26-rc9.console.trace.log
This includes the Sysrq-w & sysrq-b outputs at the bottom .
If you're interested in that kind of thing ;-) .
[<c0169259>] wb_kupdate+0x29/0x100
[<c016a0cc>] ? __pdflush+0xcc/0x1a0
[<c016a0d2>] __pdflush+0xd2/0x1a0
[<c016a1a0>] ? pdflush+0x0/0x40
[<c016a1d1>] pdflush+0x31/0x40
[<c0169230>] ? wb_kupdate+0x0/0x100
[<c016a1a0>] ? pdflush+0x0/0x40
[<c0141e2c>] kthread+0x5c/0xa0
[<c0141dd0>] ? kthread+0x0/0xa0
[<c0103d67>] kernel_thread_helper+0x7/0x10
=======================
2 locks held by pdflush/393:
#0: (&type->s_umount_key#17){----}, at: [<c018a7b2>] sync_supers+0x52/0xc0
#1: (&type->s_lock_key#7){--..}, at: [<c018a43b>] lock_super+0x1b/0x20
...snip... Repeats of above message ad-infintum .
Hmm... I guess I clipped a bit too much for our XFS friends to know
the context.
bonnie is being run on an XFS filesystem on md/raid6. and it gets
this warning a lot and essentially hangs.
NeilBrown
Nah , wasn't you who did the clipping t'was me . in order to get the
size of the original message below ~ 80K .
Tnx , JimL
--
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| James W. Laferriere | System Techniques | Give me VMS |
| Network&System Engineer | 2133 McCullam Ave | Give me Linux |
| babydr@xxxxxxxxxxxxxxxx | Fairbanks, AK. 99701 | only on AXP |
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