You can create a volume clone from a base Snapshot copy .
Reverting volume altvol to a previous snapshot. Breaking snapmirrored qtree 1 in volume altvol: basesnapshot no longer exists. Use snapmirror resync or initialize to re-establish the snapmirror. Breaking snapmirrored qtree 2 in volume altvol: WAFL_check broke all snapmirrors in volume wormclone1.Use snapmirror resync or initialize to re-establish the snapmirror.