Issues with XFS on Sles9 sp2.

[Roger Heflin <rheflin@xxxxxxxxx>]

Hello,

I have a customer that has machines whose XFS filesystem quits
responding when certain applications are running.  The only filesystem
that uses XFS is /tmp all other filesystems still respond, anything
going to tmp hangs forever.   There are multiple machines with
a couple of different types of motherboards that have this issue,
converting the machines to ext3 eliminates the issues.  Under load
they were seeing 1-2 events per 24 hours on 100 machines.   After
the ext3 conversion they have had 0 events on 400 machines in
2 weeks, so it is fairly conclusive that XFS has something to do
with it.  It is not a hardware problem of the 2 different motherboard
with the issue, one uses Opteron+AMDchipset+IDE and the other
one uses Opteron+Nvidia+SATA, and the problems are not repeating
on any 1 node, the appear to just randomly hit 1 or 2 nodes out
of the test set, and the next day it will be a different one.

They are using Sles9SP2, currently we cannot go to SP3 as there
are some other bad driver issues unrelated to XFS (the issue
preventing us from upgrading also appears to be in 2.6.16.x
kernel.org kernels so that is a more than just a SLES issue).

I have already had long discussions with Suse with less
than useful results.

Are there any patches that are likely to either produce
more debugging or to get rid of this issue?

There are no messages in the messages file when the event
happens.

Below is a sysrq generated stack trace from one of the
machines.   The issues do not seem to require heavy IO
loads (we have verified that the application is not IO
intensive), it may be something related to running short
on memory, but we don't have any OOM type messages
anywhere.  The first type of machine to have the issue
and where the issue is alot more common has only 4GB
of ram, the second type of machine that has recently
starting also having the error has 32GB of ram.

                          Roger


<Oct/27 07:40 am>xfssyncd D 00000000000493e0 0 2760 1 3876 2755 (L-TLB)

<Oct/27 07:40 am>Call Trace:<ffffffffa0141832>{:xfs:kmem_zone_zalloc+50} 
<ffffffffa012a9c4>{:xfs:_xfs_trans_alloc+36}

<Oct/27 07:40 am> <ffffffff80231b35>{__down_write+117} 
<ffffffffa0116ead>{:xfs:xfs_ilock+93}

<Oct/27 07:40 am> <ffffffffa012eda3>{:xfs:xfs_syncsub+2787} 
<ffffffff80146970>{del_timer_sync+80}

<Oct/27 07:40 am> <ffffffff80146a55>{del_singleshot_timer_sync+21} 
<ffffffff80146d2e>{schedule_timeout+254}

<Oct/27 07:40 am> <ffffffffa013e468>{:xfs:vfs_sync+40} 
<ffffffffa013da79>{:xfs:vfs_sync_worker+25}

<Oct/27 07:40 am> <ffffffffa013dc1a>{:xfs:xfssyncd+378} 
<ffffffffa013d780>{:xfs:linvfs_fill_super+0}

<Oct/27 07:40 am> <ffffffff801112b7>{child_rip+8} 
<ffffffffa013d780>{:xfs:linvfs_fill_super+0}

<Oct/27 07:40 am> <ffffffffa013daa0>{:xfs:xfssyncd+0} 
<ffffffff801112af>{child_rip+0}

<Oct/27 07:40 am>

<Oct/27 07:40 am>res D 000000000000000a 0 16149 1 26319 16151 5825 (NOTLB)

<Oct/27 07:40 am>Call Trace:<ffffffff80231bcd>{__down_read+125} 
<ffffffffa01333dc>{:xfs:xfs_access+44}

<Oct/27 07:40 am> <ffffffffa013af44>{:xfs:linvfs_permission+20} 
<ffffffff8019c767>{permission+55}

<Oct/27 07:40 am> <ffffffff8019df1c>{link_path_walk+348} 
<ffffffff801a0706>{__user_walk_it+70}

<Oct/27 07:40 am> <ffffffff801974b0>{vfs_lstat+128} 
<ffffffff80122868>{do_page_fault+536}

<Oct/27 07:40 am> <ffffffff801975bf>{sys_newlstat+31} 
<ffffffff80111101>{error_exit+0}

<Oct/27 07:40 am> <ffffffff80110794>{system_call+124}



<Oct/27 07:40 am>sbatchd D 00000000000493e0 0 16151 1 12686 16149 (NOTLB)

<Oct/27 07:40 am>Call Trace:<ffffffff801a7b51>{dput+33} 
<ffffffff8019c2cd>{follow_mount+93}

<Oct/27 07:40 am> <ffffffff801a7b51>{dput+33} 
<ffffffff80231bcd>{__down_read+125}

<Oct/27 07:40 am> <ffffffffa01333dc>{:xfs:xfs_access+44} 
<ffffffffa013af44>{:xfs:linvfs_permission+20}

<Oct/27 07:40 am> <ffffffff8019c767>{permission+55} 
<ffffffff8018aeca>{sys_chdir+138}

<Oct/27 07:40 am> <ffffffff801a394c>{sys_select+1244} 
<ffffffff80110794>{system_call+124}

<Oct/27 07:40 am>

<Oct/27 07:40 am>gm_mapper D 000000000000000a 0 12686 1 16834 16151 (L-TLB)

<Oct/27 07:40 am>Call 
Trace:<ffffffffa012b37b>{:xfs:xfs_trans_log_buf+107} 
<ffffffff8010f9c8>{__down+152}

<Oct/27 07:40 am> <ffffffff80135c50>{default_wake_function+0} 
<ffffffff80234447>{__down_failed+53}

<Oct/27 07:40 am> <ffffffffa0141642>{:xfs:.text.lock.xfs_buf+15} 
<ffffffffa0126618>{:xfs:xfs_getsb+40}

<Oct/27 07:40 am> <ffffffffa012b8aa>{:xfs:xfs_trans_getsb+106} 
<ffffffffa012a10c>{:xfs:xfs_trans_commit+332}

<Oct/27 07:40 am> <ffffffffa00e7a9c>{:xfs:xfs_free_extent+204} 
<ffffffffa0111634>{:xfs:xfs_efd_init+68}

<Oct/27 07:40 am> <ffffffffa014179b>{:xfs:kmem_zone_alloc+75} 
<ffffffffa0141832>{:xfs:kmem_zone_zalloc+50}

<Oct/27 07:40 am> <ffffffffa011a9cd>{:xfs:xfs_itruncate_finish+557} 
<ffffffffa012aae9>{:xfs:xfs_trans_alloc+217}

<Oct/27 07:40 am> <ffffffff8011081d>{sysret_signal+28} 
<ffffffffa01300af>{:xfs:xfs_inactive+591}

<Oct/27 07:40 am> <ffffffff8011081d>{sysret_signal+28} 
<ffffffff80169f50>{__pagevec_free+32}

<Oct/27 07:40 am> <ffffffff8011081d>{sysret_signal+28} 
<ffffffffa013ebc8>{:xfs:vn_rele+72}

<Oct/27 07:40 am> <ffffffffa013d392>{:xfs:linvfs_clear_inode+18} 
<ffffffff801a9d3b>{clear_inode+155}

<Oct/27 07:40 am> <ffffffff801aa3f5>{generic_delete_inode+245} 
<ffffffff801a95ee>{iput+158}

<Oct/27 07:40 am> <ffffffff801a7cb5>{dput+389} 
<ffffffff8018d9de>{__fput+270}

<Oct/27 07:40 am> <ffffffff8018965e>{filp_close+126} 
<ffffffff8013f073>{put_files_struct+115}

<Oct/27 07:40 am> <ffffffff80140522>{do_exit+1010} 
<ffffffff801484b5>{__dequeue_signal+501}

<Oct/27 07:40 am> <ffffffff8011081d>{sysret_signal+28} 
<ffffffff80140fa8>{do_group_exit+232}

<Oct/27 07:40 am> <ffffffff8014ab37>{get_signal_to_deliver+1175} 
<ffffffff8011004b>{do_signal+1179}

<Oct/27 07:40 am> <ffffffff8010fc45>{do_signal+149} 
<ffffffffa02dbea0>{:gm:gm_linux_ioctl+0}

<Oct/27 07:40 am> <ffffffffa02dbf0a>{:gm:gm_linux_ioctl+106} 
<ffffffff801a2094>{sys_ioctl+1092}

<Oct/27 07:40 am> <ffffffff8011052d>{sys_rt_sigreturn+653} 
<ffffffff8011081d>{sysret_signal+28}

<Oct/27 07:40 am> <ffffffff80110adf>{ptregscall_common+103}

<Oct/27 07:40 am>lim D 000000000000000a 0 16834 1 16835 17594 12686 (NOTLB)

<Oct/27 07:40 am>Call Trace:<ffffffff80231bcd>{__down_read+125} 
<ffffffffa01333dc>{:xfs:xfs_access+44}

<Oct/27 07:40 am> <ffffffffa013af44>{:xfs:linvfs_permission+20} 
<ffffffff8019c767>{permission+55}

<Oct/27 07:40 am> <ffffffff8019df1c>{link_path_walk+348} 
<ffffffff801a0706>{__user_walk_it+70}

<Oct/27 07:40 am> <ffffffff801974b0>{vfs_lstat+128} 
<ffffffff80117ec4>{save_i387+148}

<Oct/27 07:40 am> <ffffffff8011018d>{do_signal+1501} 
<ffffffff801975bf>{sys_newlstat+31}

<Oct/27 07:40 am> <ffffffff80147d04>{sys_rt_sigaction+148} 
<ffffffff80110794>{system_call+124}

<Oct/27 07:40 am>

<Oct/27 07:40 am>pim D 00000000000493e0 0 16835 16834 16870 (NOTLB)

<Oct/27 07:40 am>Call 
Trace:<ffffffffa01412ad>{:xfs:xfs_buf_get_flags+877} 
<ffffffffa014179b>{:xfs:kmem_zone_alloc+75}

<Oct/27 07:40 am> <ffffffff8010f9c8>{__down+152} 
<ffffffff80135c50>{default_wake_function+0}

<Oct/27 07:40 am> <ffffffffa012b37b>{:xfs:xfs_trans_log_buf+107} 
<ffffffff80234447>{__down_failed+53}

<Oct/27 07:40 am> <ffffffffa0141642>{:xfs:.text.lock.xfs_buf+15} 
<ffffffffa0126618>{:xfs:xfs_getsb+40}

<Oct/27 07:40 am> <ffffffffa012b8aa>{:xfs:xfs_trans_getsb+106} 
<ffffffffa012a10c>{:xfs:xfs_trans_commit+332}

<Oct/27 07:40 am> <ffffffffa0104d26>{:xfs:xfs_dir2_createname+278} 
<ffffffffa0117d3d>{:xfs:xfs_ichgtime+301}

<Oct/27 07:40 am> <ffffffffa013194f>{:xfs:xfs_create+1359} 
<ffffffffa013b429>{:xfs:linvfs_mknod+521}

<Oct/27 07:40 am> <ffffffffa0116d16>{:xfs:xfs_iunlock+102} 
<ffffffffa0133387>{:xfs:xfs_lookup+119}

<Oct/27 07:40 am> <ffffffffa013b704>{:xfs:linvfs_lookup+84} 
<ffffffff8019c49b>{real_lookup+123}

<Oct/27 07:40 am> <ffffffff8019cedb>{vfs_create+251} 
<ffffffff8019f3a0>{open_namei+464}

<Oct/27 07:40 am> <ffffffff80189cc7>{filp_open+87} 
<ffffffff80189d8f>{sys_open+159}

<Oct/27 07:40 am> <ffffffff80189765>{sys_close+229} 
<ffffffff80110794>{system_call+124}

<Oct/27 07:40 am>

<Oct/27 07:40 am>elim.uptime D 00000000000493e0 0 16873 1 14418 18756 
(NOTLB)

<Oct/27 07:40 am>Call Trace:<ffffffff80231bcd>{__down_read+125} 
<ffffffffa01333dc>{:xfs:xfs_access+44}

<Oct/27 07:40 am> <ffffffffa013af44>{:xfs:linvfs_permission+20} 
<ffffffff8019c767>{permission+55}

<Oct/27 07:40 am> <ffffffff8019df1c>{link_path_walk+348} 
<ffffffff8019f2a1>{open_namei+209}

<Oct/27 07:40 am> <ffffffff80189cc7>{filp_open+87} 
<ffffffff80189d8f>{sys_open+159}

<Oct/27 07:40 am> <ffffffff80111101>{error_exit+0} 
<ffffffff80110794>{system_call+124}

<Oct/27 07:40 am>

<Oct/27 07:40 am>res D 00000000000493e0 0 14323 16149 26319 (NOTLB)

<Oct/27 07:40 am>Call Trace:<ffffffff80301c83>{inet_recvmsg+51} 
<ffffffff802b520a>{sock_aio_read+346}

<Oct/27 07:40 am> <ffffffff80231bcd>{__down_read+125} 
<ffffffffa01333dc>{:xfs:xfs_access+44}

<Oct/27 07:40 am> <ffffffffa013af44>{:xfs:linvfs_permission+20} 
<ffffffff8019c767>{permission+55}

<Oct/27 07:40 am> <ffffffff8019df1c>{link_path_walk+348} 
<ffffffff8019f27f>{open_namei+175}

<Oct/27 07:40 am> <ffffffff80189cc7>{filp_open+87} 
<ffffffff80189d8f>{sys_open+159}

<Oct/27 07:40 am> <ffffffff802b58a8>{sys_socket+104} 
<ffffffff80110794>{system_call+124}

<Oct/27 07:40 am>

<Oct/27 07:40 am>acuSolve-gmpi D 00000000000493e0 0 14418 1 14419 16873 
(NOTLB)

<Oct/27 07:40 am>Call 
Trace:<ffffffff80165ad4>{wait_on_page_writeback_range_wq+324}

<Oct/27 07:40 am> <ffffffff8010f9c8>{__down+152} 
<ffffffff80135c50>{default_wake_function+0}

<Oct/27 07:40 am> <ffffffff80234447>{__down_failed+53} 
<ffffffff801949dc>{.text.lock.super+169}

<Oct/27 07:40 am> <ffffffff8018fcea>{do_sync+42} 
<ffffffff8018fd5e>{sys_sync+62}

<Oct/27 07:40 am> <ffffffff80110794>{system_call+124}

<Oct/27 07:40 am>acuSolve-gmpi D 00000000000493e0 0 14419 1 18864 14418 
(NOTLB)

<Oct/27 07:40 am>Call Trace:<ffffffff8010f9c8>{__down+152} 
<ffffffff80135c50>{default_wake_function+0}

<Oct/27 07:40 am> <ffffffff80234447>{__down_failed+53} 
<ffffffffa0141642>{:xfs:.text.lock.xfs_buf+15}

<Oct/27 07:40 am> <ffffffffa0126618>{:xfs:xfs_getsb+40} 
<ffffffffa012ecea>{:xfs:xfs_syncsub+2602}

<Oct/27 07:40 am> <ffffffffa013e468>{:xfs:vfs_sync+40} 
<ffffffffa013d434>{:xfs:linvfs_sync_super+68}

<Oct/27 07:40 am> <ffffffff80193cff>{sync_filesystems+223} 
<ffffffff8018fcf1>{do_sync+49}

<Oct/27 07:40 am> <ffffffff8018fd5e>{sys_sync+62} 
<ffffffff80110794>{system_call+124}

<Oct/27 07:40 am>

<Oct/27 07:40 am>mktemp D 00000000000493e0 0 17594 1 17656 16834 (NOTLB)

<Oct/27 07:40 am>Call Trace:<ffffffff8025bbe9>{SHATransform+25} 
<ffffffff8019c2cd>{follow_mount+93}

<Oct/27 07:40 am> <ffffffff801a7b51>{dput+33} 
<ffffffff80231bcd>{__down_read+125}

<Oct/27 07:40 am> <ffffffffa01333dc>{:xfs:xfs_access+44} 
<ffffffffa013af44>{:xfs:linvfs_permission+20}

<Oct/27 07:40 am> <ffffffff8019c767>{permission+55} 
<ffffffff8019df1c>{link_path_walk+348}

<Oct/27 07:40 am> <ffffffff801a02ac>{sys_mkdir+220} 
<ffffffff80110794>{system_call+124}

<Oct/27 07:40 am>

<Oct/27 07:40 am>check_EWNstag D 00000000000493e0 0 17620 1 17751 17656 
(NOTLB)

<Oct/27 07:40 am>Call Trace:<ffffffff8018cbbd>{do_sync_write+173} 
<ffffffff80231bcd>{__down_read+125}

<Oct/27 07:40 am> <ffffffffa01333dc>{:xfs:xfs_access+44} 
<ffffffffa013af44>{:xfs:linvfs_permission+20}

<Oct/27 07:40 am> <ffffffff8019c767>{permission+55} 
<ffffffff8019df1c>{link_path_walk+348}

<Oct/27 07:40 am> <ffffffff8019f2a1>{open_namei+209} 
<ffffffff80189cc7>{filp_open+87}

<Oct/27 07:40 am> <ffffffff80189d8f>{sys_open+159} 
<ffffffff80111101>{error_exit+0}

<Oct/27 07:40 am> <ffffffff80110794>{system_call+124} <Oct/27 07:40 am>

Oct/27 07:40 am>

<Oct/27 07:40 am>sh D 00000000000493e0 0 17959 1 17793 17858 (NOTLB)

<Oct/27 07:40 am>Call Trace:<ffffffff80231bcd>{__down_read+125} 
<ffffffffa01333dc>{:xfs:xfs_access+44}

<Oct/27 07:40 am> <ffffffffa013af44>{:xfs:linvfs_permission+20} 
<ffffffff8019c767>{permission+55}

<Oct/27 07:40 am> <ffffffff8019df1c>{link_path_walk+348} 
<ffffffff8019f2a1>{open_namei+209}

<Oct/27 07:40 am> <ffffffff80189cc7>{filp_open+87} 
<ffffffff80189d8f>{sys_open+159}

<Oct/27 07:40 am> <ffffffff80111101>{error_exit+0} 
<ffffffff80110794>{system_call+124}

<Oct/27 07:40 am>