Bug#497562: Found in current linux-modules-2.6.26-2-xen-amd64
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found 497562 2.6.26-21lenny4
severity 497562 grave
thanks
Hi,
It seems that I found the same issue in a Xen environment (using
linux-modules-2.6.26-2-xen-amd64). I experienced a crash twelve days ago
and today.
I raised the priority because of data loss: once the error appear,
(root) partition is remounted read-only, and then, the system is
rebooted (with difficulties: a daemon like mysqld fails to stop in a
read only environment); on restart, automatic fsck fails, and some data
are lost in the forced fsck process.
I'm not sure if the file system is in a really heavy load [1], DSpam may
cause MySQL to read and write some stuff on the FS, here is the end of
dmesg (log is slim since the whole partition was RO).
> [lots of lines similar to the next one]
> [1034797.920770] EXT3-fs error (device sda2): ext3_free_blocks: Freeing blocks not in datazone - block = 1094795585, count = 1
> [1034797.920780] EXT3-fs error (device sda2): ext3_free_blocks: Freeing blocks not in datazone - block = 1094795585, count = 1
> [1034797.920788] EXT3-fs error (device sda2): ext3_free_blocks: Freeing blocks not in datazone - block = 1094795585, count = 1
> [1034797.920797] EXT3-fs error (device sda2): ext3_free_blocks: Freeing blocks not in datazone - block = 1094795585, count = 1
> [1034797.920806] EXT3-fs error (device sda2): ext3_free_blocks: Freeing blocks not in datazone - block = 1094795585, count = 1
> [1034797.920815] EXT3-fs error (device sda2): ext3_free_blocks: Freeing blocks not in datazone - block = 1094795585, count = 1
> [1034797.920824] EXT3-fs error (device sda2): ext3_free_blocks: Freeing blocks not in datazone - block = 1094795585, count = 1
> [1034797.920833] EXT3-fs error (device sda2): ext3_free_blocks: Freeing blocks not in datazone - block = 1091191105, count = 1
> [1034797.920842] EXT3-fs error (device sda2): ext3_free_blocks: Freeing blocks not in datazone - block = 1094795585, count = 1
> [1034797.920860] EXT3-fs error (device sda2) in ext3_reserve_inode_write: Journal has aborted
> [1034797.920867] EXT3-fs error (device sda2) in ext3_truncate: Journal has aborted
> [1034797.920873] EXT3-fs error (device sda2) in ext3_reserve_inode_write: Journal has aborted
> [1034797.920879] EXT3-fs error (device sda2) in ext3_orphan_del: Journal has aborted
> [1034797.920885] EXT3-fs error (device sda2) in ext3_reserve_inode_write: Journal has aborted
> [1034798.050450] __journal_remove_journal_head: freeing b_committed_data
> [1034798.050463] __journal_remove_journal_head: freeing b_committed_data
> [1034798.050471] __journal_remove_journal_head: freeing b_committed_data
> [1036468.250230] exim4[20407]: segfault at 7fffff7fdec8 ip 7f8596653222 sp 7fffff7fde30 error 6 in libc-2.7.so[7f859660f000+14a000]
> [1036480.991653] exim4[20408]: segfault at 7fffff7fdec8 ip 7f8596653222 sp 7fffff7fde30 error 6 in libc-2.7.so[7f859660f000+14a000]
> [1040565.175813] exim4[27444]: segfault at 7fffff7fdec8 ip 7f8596653222 sp 7fffff7fde30 error 6 in libc-2.7.so[7f859660f000+14a000]
[1]
https://supervision.globenet.org/munin/xens-sextant/sudeducation.globenet.org-iostat.html
I'll be happy to provide further information, here are some stuff I can
think of (/dev/sda2 is actually a RAID device, but is seen as it in my
DomU) :
$ mount
/dev/sda2 on / type ext3 (rw,noatime,nodiratime,errors=remount-ro)
tmpfs on /lib/init/rw type tmpfs (rw,nosuid,mode=0755)
proc on /proc type proc (rw,noexec,nosuid,nodev)
sysfs on /sys type sysfs (rw,noexec,nosuid,nodev)
procbususb on /proc/bus/usb type usbfs (rw)
udev on /dev type tmpfs (rw,mode=0755)
tmpfs on /dev/shm type tmpfs (rw,nosuid,nodev)
devpts on /dev/pts type devpts (rw,noexec,nosuid,gid=5,mode=620)
Cheers
David
> -- System Information:
> Debian Release: 5.0.4
> APT prefers stable
> APT policy: (990, 'stable'), (650, 'testing'), (600, 'unstable')
> Architecture: amd64 (x86_64)
>
> Kernel: Linux 2.6.26-2-xen-amd64 (SMP w/1 CPU core)
> Locale: LANG=fr_FR.UTF-8, LC_CTYPE=fr_FR.UTF-8 (charmap=UTF-8)
> Shell: /bin/sh linked to /bin/bash
>
> Versions of packages linux-modules-2.6.26-2-xen-amd64 depends on:
> ii module-init-tools 3.4-1 tools for managing Linux kernel mo
>
> linux-modules-2.6.26-2-xen-amd64 recommends no packages.
>
> linux-modules-2.6.26-2-xen-amd64 suggests no packages.
>
> -- no debconf information
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