[pve-devel] ZFSPlugin snapshot question

[Dietmar Maurer]

> Yes, i guess so. It also has other problems, because not all storage type
> supports
> cloning from snapshots ...
> So it was an interesting idea, but does not really solve all problems :-/

To solve the problem for the ZFSPlugin, I think it may help to
introduce another storage API call to activate/deactivate snapshots:

sub activate_snapshot($cfs, $volid, $snapname);
sub deactivate_snapshot($cfs, $volid, $snapname);

Or simply extend the existing API and pass a 'snapname' parameter:

sub activate_volumes($cfg, $vollist, $exclusive, $snapname);
sub deactivate_volumes($cfg, $vollist, $snapname);

For the ZFSPoolPlugin, this can mount/umount snapshot 
subvolumes (which are not mounted by default).

For the ZFSPlugin, this can create and activate a clone (or something similar)?