Date: Thu, 09 Jun 2011 17:16:15 +0200 From: Arnaud Houdelette <tzim@tzim.net> To: <freebsd-fs@freebsd.org> Subject: Re: zfs snapshot management Message-ID: <a1f1bce3f4c0f9847444526e2284eaa8@tzim.net> In-Reply-To: <alpine.OSX.2.00.1106052232210.1983@hotlap.nat.fasttrackmonkey.com> References: <alpine.OSX.2.00.1106052232210.1983@hotlap.nat.fasttrackmonkey.com>
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Hi ! I use home-made scripts as I found none that met my expectations. I used the following aproach : - Do 1 (or more) snapshots each day, named @`date -u +AUTO-%Y.%m.%d-%H.%M.%S-UTC`. (no @daily, @weekly, @monthly ... snapshots) - Run a cleanup script to destroy uneeded snapshots, using " zfs get -Hpo value creation $snap " to get snapshot times, thus avoiding daylight saving issues. Said script calculates first snapshot to keep and deletes older snapshots, then calculates next snapshot to keep and deletes 'in-betweens' and so on. I used said snapshots with a patched samba vfs_shadowcopy2 'til samba35 broke the patch. I can provide the scripts if wanted. Arnaud Houdelette On Sun, 5 Jun 2011 22:32:55 -0400 (EDT), Charles Sprickman wrote: > Hello all, > > I've been using a few different tools to manage zfs snapshots in > different > scenarios. For local use, I've found that Ralf Engelschall's set of > scripts[1] that tie into the periodic(8) system work fairly well. I > do > not use the amd portion since I am only working with zfs snapshots > and I > don't see a need to actually re-mount the snapshots elsewhere for > recovery. The only limitation I find with this system is that for > use on > a backups host the lack of a monthly or yearly retention period > pretty > much rules it out. For local "oops" stuff though, it's great. > > For hosts acting as backups servers, I've been using Snapfilter[2] > and > some cobbled together stuff that rsyncs a bunch of hosts and tries to > detect and notify on errors. Snapfilter simply is the zfs snapshot > "sweeper" that periodically deletes snapshots that are outside the > defined > retention period(s). > > Since there seems to be a fair number of serious zfs users here, I > was > hoping for some further suggestions for use in either case. Any > input is > welcome... > > Thanks, > > Charles > > [1] - http://people.freebsd.org/~rse/snapshot/ > [2] - http://www.scottlu.com/Content/Snapfilter.html > _______________________________________________ > freebsd-fs@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-fs > To unsubscribe, send any mail to "freebsd-fs-unsubscribe@freebsd.org"
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