[ovirt-users] Cleanup illegal snapshot

[Markus Stockhausen]

Hi Ala,

> Von: Adam Litke [alitke at redhat.com]
> Gesendet: Freitag, 30. September 2016 15:54
> An: Markus Stockhausen
> Cc: Ovirt Users; Ala Hino; Nir Soffer
> Betreff: Re: [ovirt-users] Cleanup illegal snapshot
> 
> On 30/09/16 05:47 +0000, Markus Stockhausen wrote:
> >Hi,
> >
> >if a OVirt snapshot is illegal we might have 2 situations.
> >
> >1) qemu is still using it - lsof shows qemu access to the base raw and the
> >delta qcow2 file. -> E.g. a previous live merge failed. In the past we
> >successfully solved that situation by setting the status of the delta image
> >in the database to OK.
> >
> >2) qemu is no longer using it. lsof shows qemu access only to the the base
> >raw file -> E.g. a previous live merge succeded in qemu but Ovirt did not
> >recognize.
> >
> >How to clean up the 2nd situation?
> 
> It seems that you will have to first clean up the engine database to
> remove references to the snapshot that no longer exists.  Then you
> will need to remove the unused qcow2 volume.
> 
> Unfortunately I cannot provide safe instructions for modifying the
> database but maybe Ala Hino (added to CC:) will be able to help with
> that.

Do you have some tip for me?

> 
> One you have fixed the DB you should be able to delete the volume
> using a vdsm verb on the SPM host:
> 
> # vdsClient -s 0 deleteVolume <sdUUID> <spUUID> <imgUUID> <volUUID>
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