[sheepdog-users] cluster snapshot test

[Liu Yuan]

On Wed, Nov 27, 2013 at 11:29:56AM +0100, Valerio Pachera wrote:
> Hi, I wish to share the successful test I made this morning.
> I created a snaphsot for all my vdi(s), then saved the cluster snapshot.
> I removed all vdi snapshots and re-created them.
> Only ha guest had little changes in its vdi.
> As you can see, saving the second snapshot didn't double the amount of
> backup space, but it only stored the "new" objects.
> 

Sounds it works! Yes we build-in the auto-deduplication in the farm(cluster
snapshot mechanism), and your test confirmed it that it can dedup the data up
to 50%. That's great. As you pointed out, it is a incremental backup mechamism.

Thanks
Yuan