[Openstack] cinder-snapshot -vs- cinder-backup?

Erik McCormick emccormick at cirrusseven.com
Fri Jan 30 19:35:21 UTC 2015


It doesn't buy you a lot in that sort of setup, but it would put it in a
different pool and thus different placement groups and OSDs. It could
potentially protect you from data loss in some catastrophic situation.

-Erik

On Fri, Jan 30, 2015 at 2:08 PM, Jonathan Proulx <jon at jonproulx.com> wrote:

> Hi All,
>
> I can see the obvious distinction between cinder-snapshot and
> cinder-backup being that snapshots would live on the same storage back
> end as the active volume (using that ever snapshotting that provides)
> where the backup would be to different storage.
>
> We're using Ceph for volume and object storage so it seems like
> running cinder-backup in that case (with active, snap, and backup
> would be all in essentially the same backend) would not make a whole
> lot of sense.
>
> Is my thinking right on this or are there advantages of 'backup' over
> 'snapshot' that I'm not considering?
>
> -Jon
>
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