From: Stefan Hajnoczi <stefanha@gmail.com>
To: "Tiziano Müller" <tiziano.mueller@stepping-stone.ch>
Cc: qemu-devel <qemu-devel@nongnu.org>
Subject: Re: [Qemu-devel] Silent filesystem/qcow2 corruptions with qemu-kvm-1.0 and 1.1.1
Date: Fri, 12 Oct 2012 10:28:31 +0200 [thread overview]
Message-ID: <20121012082831.GA14822@stefanha-thinkpad.redhat.com> (raw)
In-Reply-To: <1349962403.4696.51.camel@storm>
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
next prev parent reply other threads:[~2012-10-12 8:28 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-10-11 13:33 [Qemu-devel] Silent filesystem/qcow2 corruptions with qemu-kvm-1.0 and 1.1.1 Tiziano Müller
2012-10-12 8:28 ` Stefan Hajnoczi [this message]
2012-10-12 8:53 ` Tiziano Müller
2012-10-12 8:33 ` Stefan Hajnoczi
2012-10-12 8:53 ` Tiziano Müller
2012-10-15 7:48 ` Stefan Hajnoczi
2012-10-15 9:34 ` Tiziano Müller
2012-10-15 11:11 ` Kevin Wolf
2012-10-15 11:39 ` Tiziano Müller
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