need help how to debug xfs crash issue xfs_iunlink_remove: xfs_inotobp() returned error 22
符永涛
yongtaofu at gmail.com
Mon Apr 15 07:54:21 CDT 2013
Dear Brian and xfs experts,
Brain your scripts works and I am able to reproduce it with glusterfs
rebalance on our test cluster. 2 of our server xfs shutdown during
glusterfs rebalance, the shutdown userspace stacktrace both related to
pthread. See logs bellow, What's your opinion? Thank you very much!
logs:
[root at 10.23.72.93 ~]# cat xfs.log
--- xfs_imap --
module("xfs").function("xfs_imap at fs/xfs/xfs_ialloc.c:1257").return
-- return=0x16
vars: mp=0xffff882017a50800 tp=0xffff881c81797c70 ino=0xffffffff
imap=0xffff88100e2f7c08 flags=0x0 agbno=? agino=? agno=? blks_per_cluster=?
chunk_agbno=? cluster_agbno=? error=? offset=? offset_agbno=? __func__=[...]
mp: m_agno_log = 0x5, m_agino_log = 0x20
mp->m_sb: sb_agcount = 0x1c, sb_agblocks = 0xffffff0, sb_inopblog = 0x4,
sb_agblklog = 0x1c, sb_dblocks = 0x1b4900000
imap: im_blkno = 0x0, im_len = 0xa078, im_boffset = 0x86ea
kernel backtrace:
Returning from: 0xffffffffa02b3ab0 : xfs_imap+0x0/0x280 [xfs]
Returning to : 0xffffffffa02b9599 : xfs_inotobp+0x49/0xc0 [xfs]
0xffffffffa02b96f1 : xfs_iunlink_remove+0xe1/0x320 [xfs]
0xffffffff81501a69
0x0 (inexact)
user backtrace:
0x3bd1a0e5ad [/lib64/libpthread-2.12.so+0xe5ad/0x219000]
--- xfs_iunlink_remove --
module("xfs").function("xfs_iunlink_remove at fs/xfs/xfs_inode.c:1680").return
-- return=0x16
vars: tp=0xffff881c81797c70 ip=0xffff881003c13c00 next_ino=? mp=? agi=?
dip=? agibp=0xffff880109b47e20 ibp=? agno=? agino=? next_agino=? last_ibp=?
last_dip=0xffff882000000000 bucket_index=? offset=?
last_offset=0xffffffffffff8810 error=? __func__=[...]
ip: i_ino = 0x113, i_flags = 0x0
ip->i_d: di_nlink = 0x0, di_gen = 0x0
[root at 10.23.72.93 ~]#
[root at 10.23.72.94 ~]# cat xfs.log
--- xfs_imap --
module("xfs").function("xfs_imap at fs/xfs/xfs_ialloc.c:1257").return
-- return=0x16
vars: mp=0xffff881017c6c800 tp=0xffff8801037acea0 ino=0xffffffff
imap=0xffff882017101c08 flags=0x0 agbno=? agino=? agno=? blks_per_cluster=?
chunk_agbno=? cluster_agbno=? error=? offset=? offset_agbno=? __func__=[...]
mp: m_agno_log = 0x5, m_agino_log = 0x20
mp->m_sb: sb_agcount = 0x1c, sb_agblocks = 0xffffff0, sb_inopblog = 0x4,
sb_agblklog = 0x1c, sb_dblocks = 0x1b4900000
imap: im_blkno = 0x0, im_len = 0xd98, im_boffset = 0x547
kernel backtrace:
Returning from: 0xffffffffa02b3ab0 : xfs_imap+0x0/0x280 [xfs]
Returning to : 0xffffffffa02b9599 : xfs_inotobp+0x49/0xc0 [xfs]
0xffffffffa02b96f1 : xfs_iunlink_remove+0xe1/0x320 [xfs]
0xffffffff81501a69
0x0 (inexact)
user backtrace:
0x30cd40e5ad [/lib64/libpthread-2.12.so+0xe5ad/0x219000]
--- xfs_iunlink_remove --
module("xfs").function("xfs_iunlink_remove at fs/xfs/xfs_inode.c:1680").return
-- return=0x16
vars: tp=0xffff8801037acea0 ip=0xffff880e697c8800 next_ino=? mp=? agi=?
dip=? agibp=0xffff880d846c2d60 ibp=? agno=? agino=? next_agino=? last_ibp=?
last_dip=0xffff881017c6c800 bucket_index=? offset=?
last_offset=0xffffffffffff880e error=? __func__=[...]
ip: i_ino = 0x142, i_flags = 0x0
ip->i_d: di_nlink = 0x0, di_gen = 0x3565732e
2013/4/15 符永涛 <yongtaofu at gmail.com>
> Also glusterfs use a lot of hardlink for self-heal:
> --------T 2 root root 0 Apr 15 11:58 /mnt/xfsd/testbug/998416323
> ---------T 2 root root 0 Apr 15 11:58 /mnt/xfsd/testbug/999296624
> ---------T 2 root root 0 Apr 15 12:24 /mnt/xfsd/testbug/999568484
> ---------T 2 root root 0 Apr 15 11:58 /mnt/xfsd/testbug/999956875
> ---------T 2 root root 0 Apr 15 11:58
> /mnt/xfsd/testbug/.glusterfs/05/2f/052f4e3e-c379-4a3c-b995-a10fdaca33d0
> ---------T 2 root root 0 Apr 15 11:58
> /mnt/xfsd/testbug/.glusterfs/05/95/0595272e-ce2b-45d5-8693-d02c00b94d9d
> ---------T 2 root root 0 Apr 15 11:58
> /mnt/xfsd/testbug/.glusterfs/05/ca/05ca00a0-92a7-44cf-b6e3-380496aafaa4
> ---------T 2 root root 0 Apr 15 12:24
> /mnt/xfsd/testbug/.glusterfs/0a/23/0a238ca7-3cef-4540-9c98-6bf631551b21
> ---------T 2 root root 0 Apr 15 11:58
> /mnt/xfsd/testbug/.glusterfs/0a/4b/0a4b640b-f675-4708-bb59-e2369ffbbb9d
> Does it related?
>
>
> 2013/4/15 符永涛 <yongtaofu at gmail.com>
>
>> Dear xfs experts,
>> Now I'm deploying Brian's system script in out cluster. But from last
>> night till now 5 servers in our 24 servers xfs shutdown with the same
>> error. I run xfs_repair command and found all the lost inodes are glusterfs
>> dht link files. This explains why the xfs shutdown tend to happen during
>> glusterfs rebalance. During glusterfs rebalance procedure a lot of dhk link
>> files may be unlinked. For example the following inodes are found in
>> lost+found in one of the servers:
>> [root@* lost+found]# pwd
>> /mnt/xfsd/lost+found
>> [root@* lost+found]# ls -l
>> total 740
>> ---------T 1 root root 0 Apr 8 21:06 100119
>> ---------T 1 root root 0 Apr 8 21:11 101123
>> ---------T 1 root root 0 Apr 8 21:19 102659
>> ---------T 1 root root 0 Apr 12 14:46 1040919
>> ---------T 1 root root 0 Apr 12 14:58 1041943
>> ---------T 1 root root 0 Apr 8 21:32 105219
>> ---------T 1 root root 0 Apr 8 21:37 105731
>> ---------T 1 root root 0 Apr 12 17:48 1068055
>> ---------T 1 root root 0 Apr 12 18:38 1073943
>> ---------T 1 root root 0 Apr 8 21:54 108035
>> ---------T 1 root root 0 Apr 12 21:49 1091095
>> ---------T 1 root root 0 Apr 13 00:17 1111063
>> ---------T 1 root root 0 Apr 13 03:51 1121815
>> ---------T 1 root root 0 Apr 8 22:25 112387
>> ---------T 1 root root 0 Apr 13 06:39 1136151
>> ...
>> [root@* lost+found]# getfattr -m . -d -e hex *
>>
>> # file: 96007
>> trusted.afr.mams-cq-mt-video-client-3=0x000000000000000000000000
>> trusted.afr.mams-cq-mt-video-client-4=0x000000000000000000000000
>> trusted.afr.mams-cq-mt-video-client-5=0x000000000000000000000000
>> trusted.gfid=0xa0370d8a9f104dafbebbd0e6dd7ce1f7
>>
>> trusted.glusterfs.dht.linkto=0x6d616d732d63712d6d742d766964656f2d7265706c69636174652d3600
>>
>> trusted.glusterfs.quota.ca34e1ce-f046-4ed4-bbd1-261b21bfe0b8.contri=0x0000000049dff000
>>
>> # file: 97027
>> trusted.afr.mams-cq-mt-video-client-3=0x000000000000000000000000
>> trusted.afr.mams-cq-mt-video-client-4=0x000000000000000000000000
>> trusted.afr.mams-cq-mt-video-client-5=0x000000000000000000000000
>> trusted.gfid=0xc1c1fe2ec7034442a623385f43b04c25
>>
>> trusted.glusterfs.dht.linkto=0x6d616d732d63712d6d742d766964656f2d7265706c69636174652d3600
>>
>> trusted.glusterfs.quota.ca34e1ce-f046-4ed4-bbd1-261b21bfe0b8.contri=0x000000006ac78000
>>
>> # file: 97559
>> trusted.afr.mams-cq-mt-video-client-3=0x000000000000000000000000
>> trusted.afr.mams-cq-mt-video-client-4=0x000000000000000000000000
>> trusted.afr.mams-cq-mt-video-client-5=0x000000000000000000000000
>> trusted.gfid=0xcf7c17013c914511bda4d1c743fae118
>>
>> trusted.glusterfs.dht.linkto=0x6d616d732d63712d6d742d766964656f2d7265706c69636174652d3500
>>
>> trusted.glusterfs.quota.ca34e1ce-f046-4ed4-bbd1-261b21bfe0b8.contri=0x00000000519fb000
>>
>> # file: 98055
>> trusted.afr.mams-cq-mt-video-client-3=0x000000000000000000000000
>> trusted.afr.mams-cq-mt-video-client-4=0x000000000000000000000000
>> trusted.afr.mams-cq-mt-video-client-5=0x000000000000000000000000
>> trusted.gfid=0xe86abc6e2c4b44c28d415fbbe34f2102
>>
>> trusted.glusterfs.dht.linkto=0x6d616d732d63712d6d742d766964656f2d7265706c69636174652d3600
>>
>> trusted.glusterfs.quota.ca34e1ce-f046-4ed4-bbd1-261b21bfe0b8.contri=0x000000004c098000
>>
>> # file: 98567
>> trusted.afr.mams-cq-mt-video-client-3=0x000000000000000000000000
>> trusted.afr.mams-cq-mt-video-client-4=0x000000000000000000000000
>> trusted.afr.mams-cq-mt-video-client-5=0x000000000000000000000000
>> trusted.gfid=0x12543a2efbdf4b9fa61c6d89ca396f80
>>
>> trusted.glusterfs.dht.linkto=0x6d616d732d63712d6d742d766964656f2d7265706c69636174652d3500
>>
>> trusted.glusterfs.quota.ca34e1ce-f046-4ed4-bbd1-261b21bfe0b8.contri=0x000000006bc98000
>>
>> # file: 98583
>> trusted.afr.mams-cq-mt-video-client-3=0x000000000000000000000000
>> trusted.afr.mams-cq-mt-video-client-4=0x000000000000000000000000
>> trusted.afr.mams-cq-mt-video-client-5=0x000000000000000000000000
>> trusted.gfid=0x760d16d3b7974cfb9c0a665a0982c470
>>
>> trusted.glusterfs.dht.linkto=0x6d616d732d63712d6d742d766964656f2d7265706c69636174652d3500
>>
>> trusted.glusterfs.quota.ca34e1ce-f046-4ed4-bbd1-261b21bfe0b8.contri=0x000000006cde9000
>>
>> # file: 99607
>> trusted.afr.mams-cq-mt-video-client-3=0x000000000000000000000000
>> trusted.afr.mams-cq-mt-video-client-4=0x000000000000000000000000
>> trusted.afr.mams-cq-mt-video-client-5=0x000000000000000000000000
>> trusted.gfid=0x0849a732ea204bc3b8bae830b46881da
>>
>> trusted.glusterfs.dht.linkto=0x6d616d732d63712d6d742d766964656f2d7265706c69636174652d3500
>>
>> trusted.glusterfs.quota.ca34e1ce-f046-4ed4-bbd1-261b21bfe0b8.contri=0x00000000513f1000
>> ...
>>
>> What do you think about it? Thank you very much.
>>
>>
>> 2013/4/12 符永涛 <yongtaofu at gmail.com>
>>
>>> Hi Brian,
>>>
>>> Your scripts works for me now after I installed all the rpm built out
>>> from kernel srpm. I'll try it. Thank you.
>>>
>>>
>>> 2013/4/12 Brian Foster <bfoster at redhat.com>
>>>
>>>> On 04/12/2013 04:32 AM, 符永涛 wrote:
>>>> > Dear xfs experts,
>>>> > Can I just call xfs_stack_trace(); in the second line of
>>>> > xfs_do_force_shutdown() to print stack and rebuild kernel to check
>>>> > what's the error?
>>>> >
>>>>
>>>> I suppose that's a start. If you're willing/able to create and run a
>>>> modified kernel for the purpose of collecting more debug info, perhaps
>>>> we can get a bit more creative in collecting more data on the problem
>>>> (but a stack trace there is a good start).
>>>>
>>>> BTW- you might want to place the call after the XFS_FORCED_SHUTDOWN(mp)
>>>> check almost halfway into the function to avoid duplicate messages.
>>>>
>>>> Brian
>>>>
>>>> >
>>>> > 2013/4/12 符永涛 <yongtaofu at gmail.com <mailto:yongtaofu at gmail.com>>
>>>> >
>>>> > Hi Brian,
>>>> > What else I'm missing? Thank you.
>>>> > stap -e 'probe module("xfs").function("xfs_iunlink"){}'
>>>> >
>>>> > WARNING: cannot find module xfs debuginfo: No DWARF information
>>>> found
>>>> > semantic error: no match while resolving probe point
>>>> > module("xfs").function("xfs_iunlink")
>>>> > Pass 2: analysis failed. Try again with another '--vp 01' option.
>>>> >
>>>> >
>>>> > 2013/4/12 符永涛 <yongtaofu at gmail.com <mailto:yongtaofu at gmail.com>>
>>>> >
>>>> > ls -l
>>>> >
>>>> /usr/lib/debug/lib/modules/2.6.32-279.el6.x86_64/kernel/fs/xfs/xfs.ko.debug
>>>> > -r--r--r-- 1 root root 21393024 Apr 12 12:08
>>>> >
>>>> /usr/lib/debug/lib/modules/2.6.32-279.el6.x86_64/kernel/fs/xfs/xfs.ko.debug
>>>> >
>>>> > rpm -qa|grep kernel
>>>> > kernel-headers-2.6.32-279.el6.x86_64
>>>> > kernel-devel-2.6.32-279.el6.x86_64
>>>> > kernel-2.6.32-358.el6.x86_64
>>>> > kernel-debuginfo-common-x86_64-2.6.32-279.el6.x86_64
>>>> > abrt-addon-kerneloops-2.0.8-6.el6.x86_64
>>>> > kernel-firmware-2.6.32-358.el6.noarch
>>>> > kernel-debug-2.6.32-358.el6.x86_64
>>>> > kernel-debuginfo-2.6.32-279.el6.x86_64
>>>> > dracut-kernel-004-283.el6.noarch
>>>> > libreport-plugin-kerneloops-2.0.9-5.el6.x86_64
>>>> > kernel-devel-2.6.32-358.el6.x86_64
>>>> > kernel-2.6.32-279.el6.x86_64
>>>> >
>>>> > rpm -q kernel-debuginfo
>>>> > kernel-debuginfo-2.6.32-279.el6.x86_64
>>>> >
>>>> > rpm -q kernel
>>>> > kernel-2.6.32-279.el6.x86_64
>>>> > kernel-2.6.32-358.el6.x86_64
>>>> >
>>>> > do I need to re probe it?
>>>> >
>>>> >
>>>> > 2013/4/12 Eric Sandeen <sandeen at sandeen.net
>>>> > <mailto:sandeen at sandeen.net>>
>>>> >
>>>> > On 4/11/13 11:32 PM, 符永涛 wrote:
>>>> > > Hi Brian,
>>>> > > Sorry but when I execute the script it says:
>>>> > > WARNING: cannot find module xfs debuginfo: No DWARF
>>>> > information found
>>>> > > semantic error: no match while resolving probe point
>>>> > module("xfs").function("xfs_iunlink")
>>>> > >
>>>> > > uname -a
>>>> > > 2.6.32-279.el6.x86_64
>>>> > > kernel debuginfo has been installed.
>>>> > >
>>>> > > Where can I find the correct xfs debuginfo?
>>>> >
>>>> > it should be in the kernel-debuginfo rpm (of the same
>>>> > version/release as the kernel rpm you're running)
>>>> >
>>>> > You should have:
>>>> >
>>>> >
>>>> /usr/lib/debug/lib/modules/2.6.32-279.el6.x86_64/kernel/fs/xfs/xfs.ko.debug
>>>> >
>>>> > If not, can you show:
>>>> >
>>>> > # uname -a
>>>> > # rpm -q kernel
>>>> > # rpm -q kernel-debuginfo
>>>> >
>>>> > -Eric
>>>> >
>>>> >
>>>> >
>>>> >
>>>> >
>>>> > --
>>>> > 符永涛
>>>> >
>>>> >
>>>> >
>>>> >
>>>> > --
>>>> > 符永涛
>>>> >
>>>> >
>>>> >
>>>> >
>>>> > --
>>>> > 符永涛
>>>> >
>>>> >
>>>> > _______________________________________________
>>>> > xfs mailing list
>>>> > xfs at oss.sgi.com
>>>> > http://oss.sgi.com/mailman/listinfo/xfs
>>>> >
>>>>
>>>>
>>>
>>>
>>> --
>>> 符永涛
>>>
>>
>>
>>
>> --
>> 符永涛
>>
>
>
>
> --
> 符永涛
>
--
符永涛
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