Re: [Qemu-devel] Silent filesystem/qcow2 corruptions with qemu-kvm-1.0 and 1.1.1

2012-10-15 Thread Tiziano Müller
Am Montag, den 15.10.2012, 13:11 +0200 schrieb Kevin Wolf: > Am 12.10.2012 10:53, schrieb Tiziano Müller: > > Am Freitag, den 12.10.2012, 10:33 +0200 schrieb Stefan Hajnoczi: > >> On Thu, Oct 11, 2012 at 03:33:23PM +0200, Tiziano Müller wrote: > >>> Checking the image using `qemu-img check` then gi

Re: [Qemu-devel] Silent filesystem/qcow2 corruptions with qemu-kvm-1.0 and 1.1.1

2012-10-15 Thread Kevin Wolf
Am 12.10.2012 10:53, schrieb Tiziano Müller: > Am Freitag, den 12.10.2012, 10:33 +0200 schrieb Stefan Hajnoczi: >> On Thu, Oct 11, 2012 at 03:33:23PM +0200, Tiziano Müller wrote: >>> Checking the image using `qemu-img check` then gives something like >>> this: >>> >>> ERROR OFLAG_COPIED: offset=3bc

Re: [Qemu-devel] Silent filesystem/qcow2 corruptions with qemu-kvm-1.0 and 1.1.1

2012-10-15 Thread Tiziano Müller
Am Montag, den 15.10.2012, 09:48 +0200 schrieb Stefan Hajnoczi: > Okay, that's consistent with the other symptoms you've reported. > > It's not clear whether the corruption arises inside qcow2 or if > something else is causing corruption and qcow2/xfs get upset. That is > the next step to debuggi

Re: [Qemu-devel] Silent filesystem/qcow2 corruptions with qemu-kvm-1.0 and 1.1.1

2012-10-15 Thread Stefan Hajnoczi
On Fri, Oct 12, 2012 at 10:53:29AM +0200, Tiziano Müller wrote: > Am Freitag, den 12.10.2012, 10:33 +0200 schrieb Stefan Hajnoczi: > > On Thu, Oct 11, 2012 at 03:33:23PM +0200, Tiziano Müller wrote: > > > Checking the image using `qemu-img check` then gives something like > > > this: > > > > > > E

Re: [Qemu-devel] Silent filesystem/qcow2 corruptions with qemu-kvm-1.0 and 1.1.1

2012-10-12 Thread Tiziano Müller
Am Freitag, den 12.10.2012, 10:28 +0200 schrieb Stefan Hajnoczi: > 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 /de

Re: [Qemu-devel] Silent filesystem/qcow2 corruptions with qemu-kvm-1.0 and 1.1.1

2012-10-12 Thread Tiziano Müller
Am Freitag, den 12.10.2012, 10:33 +0200 schrieb Stefan Hajnoczi: > On Thu, Oct 11, 2012 at 03:33:23PM +0200, Tiziano Müller wrote: > > Checking the image using `qemu-img check` then gives something like > > this: > > > > ERROR OFLAG_COPIED: offset=3bc3 refcount=1 > > ERROR offset=c7e331: Clust

Re: [Qemu-devel] Silent filesystem/qcow2 corruptions with qemu-kvm-1.0 and 1.1.1

2012-10-12 Thread Stefan Hajnoczi
On Thu, Oct 11, 2012 at 03:33:23PM +0200, Tiziano Müller wrote: > Checking the image using `qemu-img check` then gives something like > this: > > ERROR OFLAG_COPIED: offset=3bc3 refcount=1 > ERROR offset=c7e331: Cluster is not properly aligned; L2 entry > corrupted. Is any other program acces

Re: [Qemu-devel] Silent filesystem/qcow2 corruptions with qemu-kvm-1.0 and 1.1.1

2012-10-12 Thread Stefan Hajnoczi
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/someth

[Qemu-devel] Silent filesystem/qcow2 corruptions with qemu-kvm-1.0 and 1.1.1

2012-10-11 Thread Tiziano Müller
Hi everyone We have a couple of VMs, each with QCow2-files as disk images and we are seeing random filesystem/qcow2 corruptions of the VM filesystems. We have two types of corruptions: * if the guest OS uses XFS, we get corruption errors originating most of the time in xfs_da_do_buf inside the VM