On Fri, Apr 08, 2016 at 09:37:45AM +1000, Dave Chinner wrote:
> Hi folks,
>
> This is the second version of this patch set, first posted and
> described here:
>
> http://oss.sgi.com/archives/xfs/2016-04/msg00069.html
>
> The only change from the first version is splitting up the first
> patch into two as Christoph requested - one for the bug fix, the
> other for the variable renaming.
>
Did your xfstests testing for this series include generic/233? I'm
seeing a consistently reproducible test hang. The test is hanging on a
"xfs_quota -x -c off -ug /mnt/scratch" command. The stack is as follows:
[<ffffffffa0772306>] xfs_qm_dquot_walk.isra.8+0x196/0x1b0 [xfs]
[<ffffffffa0774a98>] xfs_qm_dqpurge_all+0x78/0x80 [xfs]
[<ffffffffa07713e8>] xfs_qm_scall_quotaoff+0x148/0x640 [xfs]
[<ffffffffa077733d>] xfs_quota_disable+0x3d/0x50 [xfs]
[<ffffffff812c27e3>] SyS_quotactl+0x3b3/0x8c0
[<ffffffff81003e17>] do_syscall_64+0x67/0x190
[<ffffffff81763f7f>] return_from_SYSCALL_64+0x0/0x7a
[<ffffffffffffffff>] 0xffffffffffffffff
... and it looks like the kernel is spinning somehow or another between
inode reclaim and xfsaild:
...
kworker/1:2-210 [001] ...1 895.750591: xfs_perag_get_tag: dev 253:3
agno 1 refcount 1 caller xfs_reclaim_inodes_ag [xfs]
kworker/1:2-210 [001] ...1 895.750609: xfs_perag_put: dev 253:3 agno 1
refcount 0 caller xfs_reclaim_inodes_ag [xfs]
kworker/1:2-210 [001] ...1 895.750609: xfs_perag_get_tag: dev 253:3
agno 2 refcount 5 caller xfs_reclaim_inodes_ag [xfs]
kworker/1:2-210 [001] ...1 895.750611: xfs_perag_put: dev 253:3 agno 2
refcount 4 caller xfs_reclaim_inodes_ag [xfs]
kworker/1:2-210 [001] ...1 895.750612: xfs_perag_get_tag: dev 253:3
agno 3 refcount 1 caller xfs_reclaim_inodes_ag [xfs]
kworker/1:2-210 [001] ...1 895.750613: xfs_perag_put: dev 253:3 agno 3
refcount 0 caller xfs_reclaim_inodes_ag [xfs]
xfsaild/dm-3-12406 [003] ...2 895.760588: xfs_ail_locked: dev 253:3 lip
0xffff8801f8e65d80 lsn 2/5709 type XFS_LI_QUOTAOFF flags IN_AIL
xfsaild/dm-3-12406 [003] ...2 895.810595: xfs_ail_locked: dev 253:3 lip
0xffff8801f8e65d80 lsn 2/5709 type XFS_LI_QUOTAOFF flags IN_AIL
xfsaild/dm-3-12406 [003] ...2 895.860586: xfs_ail_locked: dev 253:3 lip
0xffff8801f8e65d80 lsn 2/5709 type XFS_LI_QUOTAOFF flags IN_AIL
xfsaild/dm-3-12406 [003] ...2 895.910596: xfs_ail_locked: dev 253:3 lip
0xffff8801f8e65d80 lsn 2/5709 type XFS_LI_QUOTAOFF flags IN_AIL
...
FWIW, this only occurs with patch 6 applied. The test and scratch
devices are both 10GB lvm volumes formatted with mkfs defaults (v5).
Brian
> Cheers,
>
> Dave.
>
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