[Users] Ovirt 3.4rc + Qemu Live snapshot : Problem to delete a Snapshot

Gadi Ickowicz gickowic at redhat.com
Sun Mar 16 06:04:23 EDT 2014


Hi Eric,

Live merge is not yet supported (IIRC by qemu). From the Live_Snapshots wiki page:
"Live merge is not present in the upstream component yet (libvirt/qemu)"

Gadi Ickowicz

----- Original Message -----
From: "Eric Bollengier" <eric at baculasystems.com>
To: "Meital Bourvine" <mbourvin at redhat.com>
Cc: users at ovirt.org
Sent: Sunday, March 16, 2014 11:41:54 AM
Subject: Re: [Users] Ovirt 3.4rc + Qemu Live snapshot : Problem to delete a Snapshot

Hello Meital,

Thanks for your answer,

On 03/16/2014 10:04 AM, Meital Bourvine wrote:
>> I upgraded to Ovirt 3.4rc allinone on centos6, and I compiled/installed
>> the qemu-kvm-rhev to be able to take live snapshots.
>>
>> Taking the snapshot is OK, but I would like to delete them, and the
>> button and the menu are disabled (grey) until I shutdown the VM.
>>
>> Once powered off, actions are available, and I'm able to delete snapshots.
>
> This is the expected behaviour. 
>>
>> When looking the Snapshot Actions Matrix:
>> http://www.ovirt.org/Live_Snapshots
>>
>> Is the "Revert" operation needed to delete a snapshot ? (Deleting a
>> snapshot file implies to write changes from the snapshot file to the
>> parent file, looks to be "Commit" for me).
>
> As far as I understand, revert means to go back to the point that you took the snapshot,
> while delete means to stay at the current point of time but deleting the option to go back.


OK, so given the Snapshot Actions Matrix, it should be possible to
delete the snapshot via a "Live Merge" operation. So, why the delete
action is not available while the VM is running? How can I enable this
feature? Or maybe this feature is in the roadmap?

Thanks,

Regards,

Eric
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