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RE: [Xen-users] Corrupted XFS Filesystem

To: "Uli Staerk" <Uli.Staerk@xxxxxxxxxxxxxx>, <xen-users@xxxxxxxxxxxxxxxxxxx>
Subject: RE: [Xen-users] Corrupted XFS Filesystem
From: "James Harper" <james.harper@xxxxxxxxxxxxxxxx>
Date: Wed, 19 Sep 2007 09:50:16 +1000
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Thread-topic: [Xen-users] Corrupted XFS Filesystem
There was a known corruption issue in 2.6.17
(http://oss.sgi.com/projects/xfs/faq.html#dir2) but it was more subtle
than then one you seem to be experiencing, and your 2.6.16 kernel
version seems to pre-date the bug, unless something was backported into
Gentoo that included the bug...

The only other thing I can suggest is that you mounted the filesystem rw
more than once (eg in Dom0 after the DomU was running - that would be
pretty much guaranteed to wreck the filesystem)


> -----Original Message-----
> From: xen-users-bounces@xxxxxxxxxxxxxxxxxxx [mailto:xen-users-
> bounces@xxxxxxxxxxxxxxxxxxx] On Behalf Of Uli Staerk
> Sent: Wednesday, 19 September 2007 02:59
> To: xen-users@xxxxxxxxxxxxxxxxxxx
> Subject: [Xen-users] Corrupted XFS Filesystem
> Hi Folks,
> We are running all of our DomUs with XFS, and we have experienced some
> very strange filesystem corruptions, that even xfs_repair couldn't
> properly restore. The vm was irreversible damaged and many files where
> missing or moved to lost+found. The problems occurred after rebooting
> (xm shutdown + xm create ) the DomUs.
> I cant tell if the machine was shutted down properly, because it
> happened "only" three times and I'm not able to reproduce it. But I
> think not, because the xfs-log was not empty.
> The error message appeared when starting the vm was:
> Filesystem "xvda2": XFS internal error xlog_clear_stale_blocks(2) at
> line 1237 of file fs/xfs/xfs_log_recover.c.
> The used kernel: Linux version (root@vh3) (gcc version
> 3.4.4 (Gentoo 3.4.4-r1, ssp-3.4.4-1.0, pie-8.7.8)) #6 SMP Wed Nov 8
> 18:51:15 CET 2006
> Has anyone experienced similar issues?
> Greetings
> Uli Staerk
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