[Users] oVirt 3.3.0-4/F19 - Extending VM disk gives correct size but appears to wipe the drive contents

[Federico Simoncelli]

Hi Chris,
 can you post the vdsm logs (spm host) somewhere?
Thanks.

-- 
Federico

----- Original Message -----
> From: "Chris SULLIVAN (WGK)" <Chris.Sullivan at woodgroupkenny.com>
> To: users at ovirt.org
> Sent: Monday, September 23, 2013 9:08:26 PM
> Subject: [Users] oVirt 3.3.0-4/F19 - Extending VM disk gives correct size but appears to wipe the drive contents
> 
> Hi,
> 
> I had a number of Windows VMs running in oVirt 3.3 that required their
> preallocated OS disks to be extended. Each OS disk had a single partition
> taking up the entire drive. As per
> http://www.ovirt.org/Features/Online_Virtual_Drive_Resize I shut down all
> the VMs, extended each OS disk by 10GB (total 25GB) via the web interface,
> then clicked OK. The tasks appeared to complete successfully and each of the
> OS disks had the expected real size on the Gluster storage volume.
> 
> 
> 
> On startup however none of the VMs would recognize their OS disk as being a
> bootable device. Checking one of the OS disks via TestDisk (both quick and
> deep scans) revealed no partitions and the error ‘Partition sector doesn’t
> have the endmark 0xAA55’. It appears that each OS disk was wiped as part of
> the extension process although I’m really hoping that this isn’t the case!
> 
> 
> 
> Are there any other approaches I could use to attempt to recover the OS disk
> data or at least verify whether the original disk partitions are
> recoverable?