Linux – XenServer: Linux VMs keep crashing

centoscentos5linuxxenserver

I'm running 5 VMs on my XenServer 5.5 host:

  • 2x CentOS 5.5
  • 3x Windows-based (SBS 2008, Windows 2003, Windows XP)

Both Linux servers crash at random on a monthly or so basis (not at the same time either). A reboot fixes the issue, however after checking the dmesg log, I found:

device-mapper: uevent: version 1.0.3
device-mapper: ioctl: 4.11.5-ioctl (2007-12-12) initialised: dm-devel@redhat.com
device-mapper: dm-raid45: initialized v0.2594l
EXT3-fs: INFO: recovery required on readonly filesystem.
EXT3-fs: write access will be enabled during recovery.
kjournald starting. Commit interval 5 seconds
EXT3-fs: xvda1: orphan cleanup on readonly fs
ext3_orphan_cleanup: deleting unreferenced inode 3932161
ext3_orphan_cleanup: deleting unreferenced inode 2762928
ext3_orphan_cleanup: deleting unreferenced inode 2763561

<snip>

ext3_orphan_cleanup: deleting unreferenced inode 2756567
ext3_orphan_cleanup: deleting unreferenced inode 4162628
ext3_orphan_cleanup: deleting unreferenced inode 2767840
EXT3-fs: xvda1: 80 orphan inodes deleted
EXT3-fs: recovery complete.
EXT3-fs: mounted filesystem with ordered data mode.

I've been advised on another forum it's a hardware issue, but the Windows VMs never crash and I've never encountered a problem with them either.

Does anyone know what this is and what could be causing it? Additionally can anyone help determine the cause of the crashing? Thanks in advance.

Best Answer

There's not much to do here except a fsck.ext3 on your servers. When you say "a reboot fixes the problem" do you mean a reboot of the xenhost or of the linux guest ?

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