[Users] iSCSI and snapshots

[Maor Lipchuk]

Hi Juan,
When creating a snapshot, a new volume is should be created in the storage.
The snapshot should contain the VM configuration and the VM disks (not
including shareable disks and direct lun disks).

Which Ovirt version are you using?
What the audit log indicated? Was the operation succeeded?
Can u please add a print screen of your VM and snapshot?

Regards,
Maor


On 06/03/2013 10:07 PM, Juan Pablo Lorier wrote:
> Hi Maor,
>
> The thing is that I trigger the snapshot creation and everything seems
> to be ok, but I can't see any new volume of any kind. As the VM runs
> from an iscsi lun, it can not use LVM snapshots as there's no spare
> space to create any new LMV volume, neither I see any new volume in the
> data storage domain (another iscsi lun) so I can't tell for sure that
> the snapshot was really created.
> Where are the volumes saved if the VM has no spare disks or space?
> Regards,
>
> On 06/02/2013 03:07 PM, Itamar Heim wrote:
>> On 06/02/2013 02:27 PM, Maor Lipchuk wrote:
>>> Hi Juan,
>>> Snapshot saves the VM at a particular state in time using qcow (Creates
>>> a new volume and only write the changes from that particular time).
>>> Export domain also saves the VM data but it using copy process of the
>>> volumes, there for, snapshot is more faster process but dependent on the
>>> VM disks.
>>>
>>> In a nutshell the difference between the both are, that snapshot is more
>>> related to the VM scope and can be executed while the VM is running
>>> (From Ovirt 3.1)
>>> Export domain is a different domain, there for, can be moved through
>>> setups and DC's.
>>>
>>> The info of disks and ram should be displayed in the right pannel for
>>> the VM snapshots, although, for now, marking the active snapshot will
>>> not present this info.
>>> Was that the case you encountered?
>>>
>>> Regards,
>>> Maor
>>>
>>> On 05/31/2013 07:55 PM, Juan Pablo Lorier wrote:
>>>> Hi,
>>>>
>>>> I'm trying to understand how ovirt manages snapshots to start using them
>>>> for vm backups. I have my vms to use a iscsi LUN for the system (each
>>>> has its own) and I have no extra space to create an LVM snapshot in the
>>>> VM disk.
>>>> When I hit "create" in the vm snapshot tab, it creates the snapshot and
>>>> reports ok, but I see no info in the right pannel (disk, ram,etc) and
>>>> nothing is created in the data storage of the DC, so I don't get where
>>>> is ovirt storing the snapshot data.
>>>> Do I have to create an export storage domain?.
>>>> Regards,
>>>>
>>>> Juan Pablo
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>>>>
>>>
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>>
>> also worth mentioning this feature in the works:
>> http://www.ovirt.org/Features/Backup-Restore_API_Integration
>