[ovirt-users] actual size greater than virtual size?

Adam Litke alitke at redhat.com
Mon Feb 20 14:38:59 UTC 2017


Hi Gianluca.  This is most likely caused by the temporary snapshot we
create when performing live storage migration.  Please check your VM for
snapshots and delete the temporary one.

On Mon, Feb 13, 2017 at 5:07 PM, Gianluca Cecchi <gianluca.cecchi at gmail.com>
wrote:

> Hello,
> I'm on 4.1 with 2 FC SAN storage domains and testing live migration of
> disk.
>
> I started with a CentOS 7.3 VM with a thin provisioned disk of 30Gb.
> It seems that I can see actual disk size in VM--> Snapshots--> Active VM
> line and the right sub pane.
> If I remember correctly before the live storage migration the actual size
> was 16Gb.
> But after the migration it shows actual size greater than virtual (33Gb)??
> There are no snapshots on the VM right now.
> Is this true? In case could it depend on temporary snapshots done by th
> esystem for storage migration? But in this case does it mean that a live
> merge generates a biggest image at the end..?
>
> The command I saw during conversion was:
>
> vdsm     17197  2707  3 22:39 ?        00:00:01 /usr/bin/qemu-img convert
> -p -t none -T none -f qcow2 /rhev/data-center/mnt/blockSD/
> 922b5269-ab56-4c4d-838f-49d33427e2ab/images/6af3dfe5-
> 6da7-48e3-9eb0-1e9596aca9d3/9af3574d-dc83-485f-b906-0970ad09b660 -O qcow2
> -o compat=1.1 /rhev/data-center/mnt/blockSD/5ed04196-87f1-480e-9fee-
> 9dd450a3b53b/images/6af3dfe5-6da7-48e3-9eb0-1e9596aca9d3/
> 9af3574d-dc83-485f-b906-0970ad09b660he
>
> See currenti situation here:
> https://drive.google.com/file/d/0BwoPbcrMv8mvMnhib2NCQlJfRVE/
> view?usp=sharing
>
> thanks for clarification,
> Gianluca
>
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> Users at ovirt.org
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>
>


-- 
Adam Litke
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