>> - Taking a snapshot is an O(1) operation > > most interestingly, that is a property of #ℙ, which is not directly > tied to θfs. so you could, with arrangements, snapshot any other > file system.
That's correct. #ℙ doesn't depend on θfs at all. θfs can be used without #ℙ, but it does have some provisions for using #ℙ to provide a /n/dump/yyyy/mmdd name space. With similar provision, one could use #ℙ to create a snapshotted kfs that was similarly efficient. BLS