> Daniel Carosone <d...@geek.com.au> writes: > > > Would there be a way to avoid taking snapshots if > > they're going to be zero-sized? > > I don't think it is easy to do, the txg counter is on > a pool level, > [..] > it would help when the entire pool is idle, though.
.. which is exactly the scenario in question: when the disks are likely to be spun down already (or to spin down soon without further activity), and you want to avoid waking them up (or keeping them awake) with useless snapshot activity. However, this highlights that a (pool? fs?) property that exposes the current txg id (frozen in snapshots, as normal, if an fs property) might be enough for the userspace daemon to make its own decision to avoid requesting snapshots, without needing a whole discretionary mechanism in zfs itself. -- This message posted from opensolaris.org _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
