[one-users] Backup and Restore

[Ruben S. Montero]

You can also try (Xen, VMware also supported in this method) save_as the VM
disks (live), sync the FS (within the VMs) before doing it to prevent
inconsistencies. You will have a copy of the disks in the Image datastore,
that can be used as backup or to instantiate other VMs.

Cheers


On Thu, Oct 31, 2013 at 9:44 AM, Carlo Daffara <
carlo.daffara at cloudweavers.eu> wrote:

> There are many solutions; apart from using kvm snapshots (and later image
> rebuild to have a single clone) we prefer the use of a filesystem that
> allows for atomic snapshots (like BTRFS) or
> a distributed filesystem with the same properties (like Ceph). You
> snapshot the entire datastore or the single file you want, and then
> reimport it within opennebula.
> Take care of one thing: if you are using cache=writeback in KVM (or the
> equivalent in xen or vmware) you are risking inconsistencies, unless you
> stop the VM, as there are probably outstanding writes that needs to be
> committed to disk that will not appear in the snapshot at all.
> Carlo Daffara
>
> ----- Messaggio originale -----
> Da: "Soeren Malchow" <soeren.malchow at mcon.net>
> A: users at lists.opennebula.org
> Inviato: Giovedì, 31 ottobre 2013 7:41:35
> Oggetto: [one-users] Backup and Restore
>
>
>
> Dear all,
>
>
>
> i already searched the documentation and the mailing list, but did not
> come up with an answer.
>
>
>
> I would like to know how to backup virtual machines in OpenNebula WITHOUT
> shutting the down, or if there is a solution at all.
>
>
>
> We have an existing backup system that should be reused, exposure of the
> virtual machines images files or something like that should be sufficient.
>
>
>
> Can anybody point me into the right direction ?
>
>
>
> Regards
>
> Soeren
>
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-- 
-- 
Ruben S. Montero, PhD
Project co-Lead and Chief Architect
OpenNebula - Flexible Enterprise Cloud Made Simple
www.OpenNebula.org | rsmontero at opennebula.org | @OpenNebula
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