On Nov 8, 2012, at 1:02 AM, Avishay Traeger <[email protected]> wrote:
> > Hi all, > I had a few questions about snapshot support in Cinder: > 1) a. Why is a snapshot a fundamentally different entity than a volume? > b. Is it because some back-ends don't support the same set of operations > on snapshots? > c. Is this what the snapshot-to-volume operation was meant to achieve? > d. If a back-end supports nested snapshots, each snapshot will need to > be converted to volume before a nested snapshot can be taken? > e. And in this case, will the back-end driver simply do nothing for the > snapshot-to-volume operation? > 2) Why can't you take snapshots of attached volumes? I think most/all > back-ends will be fine with it (of course they will be crash-consistent if > the OS/application doesn't sync to disk). I believe snapshot --force allows you to snapshot attached volumes. Vish _______________________________________________ Mailing list: https://launchpad.net/~openstack Post to : [email protected] Unsubscribe : https://launchpad.net/~openstack More help : https://help.launchpad.net/ListHelp
