Well, I could just use the same script to create my daily snapshot to remove a snapshot with the same prefix, just different date (say, keep 30 days only or something)
My hope was to just keep a running archive indefinitely. But I guess snapshots are only as good as needed, and I doubt I will realize I need a file I lost 6+ months ago... On Mon, Mar 9, 2009 at 11:49 AM, Richard Morris - Sun Microsystems - Burlington United States <richard.mor...@sun.com> wrote: > On 03/08/09 23:16, Blake wrote: > > I think it's filesystems, not snapshots, that take a long time to > enumerate. (If I'm wrong, somebody correct me :) > > The time needed to iterate through the same number of snapshots and > filesystems should be about the same. However, whenever any of the > ZFS filesystems or snapshots to be listed are not already cached in > memory, then it does take time for zfs list to load them from disk. > However, some prefetching has been added to help speed this up. > > No extra time is needed to boot a system with thousands of filesystems > or snapshots. However, ZFS mounts filesystems by default and it does > take time for thousands of filesystems to be mounted. Changes have > been made to speed this up by reducing the number of mnttab lookups. > > And zfs list has been changed to no longer show snapshots by default. > But it still might make sense to limit the number of snapshots saved: > http://blogs.sun.com/timf/entry/zfs_automatic_snapshots_0_10 > > -- Rich > > On Sun, Mar 8, 2009 at 10:10 PM, mike <mike...@gmail.com> wrote: > > > I do a daily snapshot of two filesystems, and over the past few months > it's obviously grown to a bunch. > > "zfs list" shows me all of those. > > I can change it to use the "-t" flag to not show them, so that's good. > However, I'm worried about boot times and other things. > > Will it get to a point with 1000's of snapshots that it takes a long > time to boot, or do any sort of sync or scrub activities? > > Thanks :) > _______________________________________________ > zfs-discuss mailing list > zfs-discuss@opensolaris.org > http://mail.opensolaris.org/mailman/listinfo/zfs-discuss > > > > _______________________________________________ > zfs-discuss mailing list > zfs-discuss@opensolaris.org > http://mail.opensolaris.org/mailman/listinfo/zfs-discuss > > _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
