On Thu, Oct 11, 2012 at 03:33:23PM +0200, Tiziano Müller wrote:
> One test case was:
> * xfs_repair /dev/vda2 -> corruptions found and fixed
> * xfs_repair /dev/vda2 -> no corruptions found

>From here...

> * mount /dev/vda2 /mnt/something
> * find /mnt/something > /dev/null
> * umount /mnt/something

...to here is mostly read-only.

> * xfs_repair /dev/vda2 -> corruptions found again

And yet corruptions are reported inside the guest!

Can you retry with "mount -o ro" just for sanity?  If you still see
corruptions when the device was mounted read-only, then perhaps the
mount/find/umount sequence itself is innocent.

Have you tried raw image files?  In other words, do you know that the
corruption only happens with qcow2?

Stefan

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