Hello,
with user and group quotas enabled, XFS freezes during mount and the following error is reported to
dmesg (Debian 8 kernel 3.16.0-4):
[ 142.012022] XFS (sdd1): Mounting V4 Filesystem
[ 142.044267] XFS (sdd1): Ending clean mount
[ 142.045428] XFS (sdd1): Quotacheck needed: Please wait.
[ 360.267113] INFO: task mount:699 blocked for more than 120 seconds.
[ 360.267148] Not tainted 3.16.0-4-amd64 #1
[ 360.267165] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[ 360.267194] mount D ffff880079a9eff8 0 699 669 0x00000000
[ 360.267197] ffff880079a9eba0 0000000000000086 0000000000012f40 ffff880078a9ffd8
[ 360.267199] 0000000000012f40 ffff880079a9eba0 ffff88007ae7de90 ffff880078a9fb08
[ 360.267201] ffff88007ae7de88 ffff880079a9eba0 ffff880078a9fbb8 0000000000000000
[ 360.267202] Call Trace:
[ 360.267210] [<ffffffff81514269>] ? schedule_timeout+0x259/0x2d0
[ 360.267268] [<ffffffffa0196e15>] ? xfs_iunlock+0xc5/0x140 [xfs]
[ 360.267271] [<ffffffff81515758>] ? wait_for_completion+0xa8/0x110
[ 360.267274] [<ffffffff810982e0>] ? wake_up_state+0x10/0x10
[ 360.267283] [<ffffffffa01b5494>] ? xfs_qm_flush_one+0x64/0xa0 [xfs]
[ 360.267293] [<ffffffffa01b5430>] ? xfs_qm_shrink_scan+0x100/0x100 [xfs]
[ 360.267302] [<ffffffffa01b59d0>] ? xfs_qm_dquot_walk.isra.9+0xd0/0x150 [xfs]
[ 360.267312] [<ffffffffa01b7829>] ? xfs_qm_quotacheck+0x269/0x2e0 [xfs]
[ 360.267321] [<ffffffffa0162150>] ? xfs_parseargs+0xb80/0xb80 [xfs]
[ 360.267331] [<ffffffffa01b7a01>] ? xfs_qm_mount_quotas+0xe1/0x190 [xfs]
[ 360.267340] [<ffffffffa015f74d>] ? xfs_mountfs+0x69d/0x710 [xfs]
[ 360.267349] [<ffffffffa01623e3>] ? xfs_fs_fill_super+0x293/0x310 [xfs]
[ 360.267353] [<ffffffff811ada46>] ? mount_bdev+0x1a6/0x1e0
[ 360.267357] [<ffffffff8118830d>] ? alloc_pages_current+0x9d/0x150
[ 360.267359] [<ffffffff811ae2d4>] ? mount_fs+0x34/0x1a0
[ 360.267363] [<ffffffff811c7ea2>] ? vfs_kern_mount+0x62/0x110
[ 360.267365] [<ffffffff811ca760>] ? do_mount+0x240/0xca0
[ 360.267368] [<ffffffff8118830d>] ? alloc_pages_current+0x9d/0x150
[ 360.267371] [<ffffffff811439aa>] ? __get_free_pages+0xa/0x50
[ 360.267373] [<ffffffff811cb4b1>] ? SyS_mount+0x81/0xc0
[ 360.267375] [<ffffffff8151854d>] ? system_call_fast_compare_end+0x10/0x15
I also tried vanilla kernel 4.6.7 on the same server and the callstack is slightly different:
[ 75.814590] XFS (sdd1): Mounting V4 Filesystem
[ 75.850660] XFS (sdd1): Ending clean mount
[ 75.852091] XFS (sdd1): Quotacheck needed: Please wait.
[ 240.243744] INFO: task mount:773 blocked for more than 120 seconds.
[ 240.243808] Tainted: G E 4.6.7-znr1+ #16
[ 240.243856] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[ 240.243908] mount D ffff88007c656000 0 773 741 0x00000000
[ 240.243916] ffff880079b70e00 ffff88007be28dc0 ffff88007a14c000 ffff88007a14ba90
[ 240.243919] ffff880079d88e80 ffff880079b70e00 ffff88007a14bca0 ffff88007a14bb48
[ 240.243920] ffffffff815c4ca1 ffff880079d88e88 ffffffff815c7cbf 7fffffffffffffff
[ 240.243922] Call Trace:
[ 240.243929] [<ffffffff815c4ca1>] ? schedule+0x31/0x80
[ 240.243932] [<ffffffff815c7cbf>] ? schedule_timeout+0x22f/0x2c0
[ 240.243978] [<ffffffffc017415f>] ? xfs_bmapi_read+0xef/0x2d0 [xfs]
[ 240.243981] [<ffffffff815c56da>] ? wait_for_completion+0xfa/0x130
[ 240.243987] [<ffffffff810a4920>] ? wake_up_q+0x60/0x60
[ 240.244009] [<ffffffffc01d4ecd>] ? xfs_qm_flush_one+0x7d/0xc0 [xfs]
[ 240.244030] [<ffffffffc01d4e50>] ? xfs_qm_dqattach_one+0x120/0x120 [xfs]
[ 240.244051] [<ffffffffc01d52a0>] ? xfs_qm_dquot_walk.isra.10+0xd0/0x150 [xfs]
[ 240.244072] [<ffffffffc01d72ec>] ? xfs_qm_quotacheck+0x26c/0x320 [xfs]
[ 240.244093] [<ffffffffc01d746e>] ? xfs_qm_mount_quotas+0xce/0x170 [xfs]
[ 240.244113] [<ffffffffc01b9933>] ? xfs_mountfs+0x803/0x870 [xfs]
[ 240.244132] [<ffffffffc01a8220>] ? xfs_filestream_get_parent+0x70/0x70 [xfs]
[ 240.244152] [<ffffffffc01bc043>] ? xfs_fs_fill_super+0x3a3/0x4b0 [xfs]
[ 240.244173] [<ffffffffc01bbca0>] ? xfs_test_remount_options.isra.11+0x60/0x60 [xfs]
[ 240.244176] [<ffffffff811f52d5>] ? mount_bdev+0x175/0x1a0
[ 240.244177] [<ffffffff811f5b96>] ? mount_fs+0x36/0x170
[ 240.244180] [<ffffffff812114c4>] ? vfs_kern_mount+0x64/0x100
[ 240.244182] [<ffffffff81213a04>] ? do_mount+0x244/0xd50
[ 240.244184] [<ffffffff812147f4>] ? SyS_mount+0x84/0xc0
[ 240.244186] [<ffffffff815c89b6>] ? entry_SYSCALL_64_fastpath+0x1e/0xa8
Filesystem parameters are as follows:
orthosie:~# xfs_info /www
meta-data=/dev/sdd1 isize=256 agcount=103, agsize=655232 blks
= sectsz=512 attr=2, projid32bit=0
= crc=0 finobt=0
data = bsize=4096 blocks=66846464, imaxpct=25
= sunit=0 swidth=0 blks
naming =version 2 bsize=4096 ascii-ci=0 ftype=0
log =internal bsize=4096 blocks=2560, version=2
= sectsz=512 sunit=0 blks, lazy-count=1
realtime =none extsz=4096 blocks=0, rtextents=0
Disk usage:
orthosie:~# df
Filesystem 1K-blocks Used Available Use% Mounted on
/dev/sdd1 267375616 225270324 42105292 85% /www
The only workaround is to mount the filesystem without quotas, xfs_repair reports no errors.
Any ideas what's wrong? How can I help to fix the problem? Note that the server is a non-production
clone of a virtual machine where the problem originally occurred. So I'm free to any tests and
experiments.
Best regards
Martin Svec
--
To unsubscribe from this list: send the line "unsubscribe linux-xfs" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
