[Users] iSCSI and snapshots

Itamar Heim iheim at redhat.com
Sun Jun 2 12:07:18 UTC 2013


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
>> _______________________________________________
>> Users mailing list
>> Users at ovirt.org
>> http://lists.ovirt.org/mailman/listinfo/users
>>
>
> _______________________________________________
> Users mailing list
> Users at ovirt.org
> http://lists.ovirt.org/mailman/listinfo/users
>

also worth mentioning this feature in the works:
http://www.ovirt.org/Features/Backup-Restore_API_Integration



More information about the Users mailing list