linux-kernel.vger.kernel.org archive mirror
 help / color / mirror / Atom feed
* 3.5.2: moving files from xfs/disk -> nfs: radix_tree_lookup_slot+0xe/0x10
@ 2012-08-27 15:00 Justin Piszcz
  2012-09-01 23:13 ` Christoph Hellwig
  0 siblings, 1 reply; 3+ messages in thread
From: Justin Piszcz @ 2012-08-27 15:00 UTC (permalink / raw)
  To: linux-kernel; +Cc: xfs

Hi,

Moving ~276GB of files (mainly large backups) and everything has
seemed to lockup on the client moving data to the server, it is still
in this state..

[75716.705697] INFO: task sync:8790 blocked for more than 120 seconds.
[75716.705701] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs"
disables this message.
[75716.705703] sync            D ffff88040ec54830     0  8790   2141 0x00000000
[75716.705708]  ffff88001fff1d08 0000000000000086 ffffffff81862fc0
ffff88001fff1fd8
[75716.705713]  ffff88001fff1fd8 0000000000004000 ffff88041d958670
ffff88040ec54830
[75716.705716]  ffff88001fff1c38 ffffffff812dcaee ffff88001fff1c58
ffff88001fff1d78
[75716.705720] Call Trace:
[75716.705729]  [<ffffffff812dcaee>] ? radix_tree_lookup_slot+0xe/0x10
[75716.705733]  [<ffffffff81082ca6>] ? find_get_pages_tag+0xc6/0x150
[75716.705738]  [<ffffffff81057980>] ? __enqueue_entity+0x70/0x80
[75716.705742]  [<ffffffff810e3450>] ? __sync_filesystem+0x90/0x90
[75716.705747]  [<ffffffff815a3d04>] schedule+0x24/0x70
[75716.705751]  [<ffffffff815a2549>] schedule_timeout+0x1a9/0x210
[75716.705755]  [<ffffffff81089550>] ? calc_period_shift+0x60/0x60
[75716.705760]  [<ffffffff81052ef5>] ? check_preempt_curr+0x75/0xa0
[75716.705764]  [<ffffffff815a3420>] wait_for_common+0xc0/0x150
[75716.705767]  [<ffffffff81055af0>] ? try_to_wake_up+0x280/0x280
[75716.705770]  [<ffffffff810e3450>] ? __sync_filesystem+0x90/0x90
[75716.705773]  [<ffffffff815a3d78>] wait_for_completion+0x18/0x20
[75716.705777]  [<ffffffff810dfa47>] writeback_inodes_sb_nr+0x77/0xa0
[75716.705782]  [<ffffffff810d0101>] ?
shrink_dcache_for_umount_subtree+0x111/0x1d0
[75716.705785]  [<ffffffff810dfa99>] writeback_inodes_sb+0x29/0x40
[75716.705788]  [<ffffffff810e3407>] __sync_filesystem+0x47/0x90
[75716.705791]  [<ffffffff810e346b>] sync_one_sb+0x1b/0x20
[75716.705795]  [<ffffffff810bea71>] iterate_supers+0xe1/0xf0
[75716.705798]  [<ffffffff810e355b>] sys_sync+0x2b/0x60
[75716.705802]  [<ffffffff815a53a6>] system_call_fastpath+0x1a/0x1f
[75836.701197] INFO: task sync:8790 blocked for more than 120 seconds.

Thoughts?

Justin.

^ permalink raw reply	[flat|nested] 3+ messages in thread

* Re: 3.5.2: moving files from xfs/disk -> nfs: radix_tree_lookup_slot+0xe/0x10
  2012-08-27 15:00 3.5.2: moving files from xfs/disk -> nfs: radix_tree_lookup_slot+0xe/0x10 Justin Piszcz
@ 2012-09-01 23:13 ` Christoph Hellwig
  2012-09-03  5:43   ` Dave Chinner
  0 siblings, 1 reply; 3+ messages in thread
From: Christoph Hellwig @ 2012-09-01 23:13 UTC (permalink / raw)
  To: Justin Piszcz; +Cc: linux-kernel, xfs, linux-m

I'd suspect it's something with the actual radix tree code, Ccing
linux-mm in case they know more.

On Mon, Aug 27, 2012 at 11:00:10AM -0400, Justin Piszcz wrote:
> Hi,
> 
> Moving ~276GB of files (mainly large backups) and everything has
> seemed to lockup on the client moving data to the server, it is still
> in this state..
> 
> [75716.705697] INFO: task sync:8790 blocked for more than 120 seconds.
> [75716.705701] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs"
> disables this message.
> [75716.705703] sync            D ffff88040ec54830     0  8790   2141 0x00000000
> [75716.705708]  ffff88001fff1d08 0000000000000086 ffffffff81862fc0
> ffff88001fff1fd8
> [75716.705713]  ffff88001fff1fd8 0000000000004000 ffff88041d958670
> ffff88040ec54830
> [75716.705716]  ffff88001fff1c38 ffffffff812dcaee ffff88001fff1c58
> ffff88001fff1d78
> [75716.705720] Call Trace:
> [75716.705729]  [<ffffffff812dcaee>] ? radix_tree_lookup_slot+0xe/0x10
> [75716.705733]  [<ffffffff81082ca6>] ? find_get_pages_tag+0xc6/0x150
> [75716.705738]  [<ffffffff81057980>] ? __enqueue_entity+0x70/0x80
> [75716.705742]  [<ffffffff810e3450>] ? __sync_filesystem+0x90/0x90
> [75716.705747]  [<ffffffff815a3d04>] schedule+0x24/0x70
> [75716.705751]  [<ffffffff815a2549>] schedule_timeout+0x1a9/0x210
> [75716.705755]  [<ffffffff81089550>] ? calc_period_shift+0x60/0x60
> [75716.705760]  [<ffffffff81052ef5>] ? check_preempt_curr+0x75/0xa0
> [75716.705764]  [<ffffffff815a3420>] wait_for_common+0xc0/0x150
> [75716.705767]  [<ffffffff81055af0>] ? try_to_wake_up+0x280/0x280
> [75716.705770]  [<ffffffff810e3450>] ? __sync_filesystem+0x90/0x90
> [75716.705773]  [<ffffffff815a3d78>] wait_for_completion+0x18/0x20
> [75716.705777]  [<ffffffff810dfa47>] writeback_inodes_sb_nr+0x77/0xa0
> [75716.705782]  [<ffffffff810d0101>] ?
> shrink_dcache_for_umount_subtree+0x111/0x1d0
> [75716.705785]  [<ffffffff810dfa99>] writeback_inodes_sb+0x29/0x40
> [75716.705788]  [<ffffffff810e3407>] __sync_filesystem+0x47/0x90
> [75716.705791]  [<ffffffff810e346b>] sync_one_sb+0x1b/0x20
> [75716.705795]  [<ffffffff810bea71>] iterate_supers+0xe1/0xf0
> [75716.705798]  [<ffffffff810e355b>] sys_sync+0x2b/0x60
> [75716.705802]  [<ffffffff815a53a6>] system_call_fastpath+0x1a/0x1f
> [75836.701197] INFO: task sync:8790 blocked for more than 120 seconds.
> 
> Thoughts?
> 
> Justin.
> 
> _______________________________________________
> xfs mailing list
> xfs@oss.sgi.com
> http://oss.sgi.com/mailman/listinfo/xfs
---end quoted text---

^ permalink raw reply	[flat|nested] 3+ messages in thread

* Re: 3.5.2: moving files from xfs/disk -> nfs: radix_tree_lookup_slot+0xe/0x10
  2012-09-01 23:13 ` Christoph Hellwig
@ 2012-09-03  5:43   ` Dave Chinner
  0 siblings, 0 replies; 3+ messages in thread
From: Dave Chinner @ 2012-09-03  5:43 UTC (permalink / raw)
  To: Christoph Hellwig; +Cc: Justin Piszcz, linux-m, linux-kernel, xfs

On Sat, Sep 01, 2012 at 07:13:38PM -0400, Christoph Hellwig wrote:
> I'd suspect it's something with the actual radix tree code, Ccing
> linux-mm in case they know more.

I don't think it has anything to do with the radix tree code....

> On Mon, Aug 27, 2012 at 11:00:10AM -0400, Justin Piszcz wrote:
> > Hi,
> > 
> > Moving ~276GB of files (mainly large backups) and everything has
> > seemed to lockup on the client moving data to the server, it is still
> > in this state..
.....

> > [75716.705720] Call Trace:
> > [75716.705729]  [<ffffffff812dcaee>] ? radix_tree_lookup_slot+0xe/0x10

It's just a symbol that was found in the stack. The real trace is
this:

> > [75716.705747]  [<ffffffff815a3d04>] schedule+0x24/0x70
> > [75716.705751]  [<ffffffff815a2549>] schedule_timeout+0x1a9/0x210
> > [75716.705764]  [<ffffffff815a3420>] wait_for_common+0xc0/0x150
> > [75716.705773]  [<ffffffff815a3d78>] wait_for_completion+0x18/0x20
> > [75716.705777]  [<ffffffff810dfa47>] writeback_inodes_sb_nr+0x77/0xa0
> > [75716.705785]  [<ffffffff810dfa99>] writeback_inodes_sb+0x29/0x40
> > [75716.705788]  [<ffffffff810e3407>] __sync_filesystem+0x47/0x90
> > [75716.705791]  [<ffffffff810e346b>] sync_one_sb+0x1b/0x20
> > [75716.705795]  [<ffffffff810bea71>] iterate_supers+0xe1/0xf0
> > [75716.705798]  [<ffffffff810e355b>] sys_sync+0x2b/0x60
> > [75716.705802]  [<ffffffff815a53a6>] system_call_fastpath+0x1a/0x1f
> > [75836.701197] INFO: task sync:8790 blocked for more than 120 seconds.

Which simply says that writeback of the dirty data at the time of
the sync call has taken longer than 120s.

Cheers,

Dave.
-- 
Dave Chinner
david@fromorbit.com

^ permalink raw reply	[flat|nested] 3+ messages in thread

end of thread, other threads:[~2012-09-03  5:44 UTC | newest]

Thread overview: 3+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2012-08-27 15:00 3.5.2: moving files from xfs/disk -> nfs: radix_tree_lookup_slot+0xe/0x10 Justin Piszcz
2012-09-01 23:13 ` Christoph Hellwig
2012-09-03  5:43   ` Dave Chinner

This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).