[Qemu-devel] Re: virtio-blk XFS corruption

[Stefan Hajnoczi]

On Sat, Sep 25, 2010 at 2:43 PM, Peter Lieven <address@hidden> wrote:
> we experience filesystem corruption using virtio-blk on some guest systems 
> togehter with XFS. We still use qemu-kvm 0.12.4.
[...]
> It seems that 64-bit Ubuntu LTS 10.04.1 is affected as well as an older 
> openSuse 11.1 system with kernel 2.6.27.45-0.1-pae. Suprisingly we have
> an openSuse 11.1 with 2.6.27.45-0.1-default working absolutely stable for 
> months.

Affected guests: 64-bit Ubuntu LTS 10.04.1, openSuse 11.1 2.6.27.45-0.1-pae
Unaffected guests: openSuse 11.1 2.6.27.45-0.1-default
qemu-kvm version: 0.12.4
qemu-kvm command-line: ?
Disk image format: ?
Steps to reproduce: ?

Can you please provide information on the unknown items above?

Does this happen with IDE (-drive file=myimage.img,if=ide) or only
with virtio-blk?

> The only thing I have seen in the syslog of the 64-bit Ubuntu LTS 10.04.1 is 
> the following:
>
> [19001.346897] Filesystem "vda1": XFS internal error xfs_trans_cancel at line 
> 1162 of file /build/buildd/linux-2.6.32/fs/xfs/xfs_trans.c.  Caller 
> 0xffffffffa013091d
> [19001.346897]
> [19002.174492] Pid: 1210, comm: diablo Not tainted 2.6.32-24-server #43-Ubuntu
> [19002.174492] Call Trace:
> [19002.174492]  [<ffffffffa010f403>] xfs_error_report+0x43/0x50 [xfs]
> [19002.174492]  [<ffffffffa013091d>] ? xfs_create+0x1dd/0x5f0 [xfs]
> [19002.174492]  [<ffffffffa012bb35>] xfs_trans_cancel+0xf5/0x120 [xfs]
> [19002.174492]  [<ffffffffa013091d>] xfs_create+0x1dd/0x5f0 [xfs]

XFS has given up because of an error in xfs_create() but I don't think
this output gives enough information to determine what the error was.

Stefan