Oh, I forgot to say about a patch:

https://www.redhat.com/archives/libvir-list/2012-March/msg01369.html

On Wed, Apr 18, 2012 at 6:55 PM, Martin Mailand <mar...@tuxadero.com> wrote:
> Hi Andrey,
>
> if I try it I get this error.
>
> virsh snapshot-create linux1
> error: Requested operation is not valid: Disk 'rbd/vm1:rbd_cache_enabled=1'
> does not support snapshotting
>
> maybe the rbd_cache option is the problem?
>
>
> -martin
>
>
> Am 18.04.2012 16:39, schrieb Andrey Korolyov:
>
>> I have tested all of them about a week ago, all works fine. Also it
>> will be very nice if rbd can list an actual allocated size of every
>> image or snapshot in future.
>>
>> On Wed, Apr 18, 2012 at 5:22 PM, Martin Mailand<mar...@tuxadero.com>
>>  wrote:
>>>
>>> Hi Wido,
>>>
>>> I am looking for doing the snapshots via libvirt, create, delete,
>>> rollback
>>> and list of the snapshot.
>>>
>>> -martin
>>>
>>> Am 18.04.2012 15:10, schrieb Wido den Hollander:
>>>
>>>> I tested this about a year ago and that worked fine.
>>>>
>>>> Anything in particular you are looking for?
>>>
>>>
>>>
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>
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