Date: Fri, 9 Sep 2011 10:49:58 +0200 From: Patrick Proniewski <patpro@patpro.net> To: FreeBSD Filesystems <freebsd-fs@freebsd.org> Subject: ZFS: zpool history size Message-ID: <E8158B0B-A303-4873-8419-177D79848400@patpro.net>
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--Apple-Mail-7-96066748 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=us-ascii Hello, I have a production server hosting about 250 web sites. I'm using ZFS, = so that I can create a dedicated FS whenever a user wants to create a = web site. I've started 6 mouths ago to dump `zpool history` into a file, daily, = and to commit the output to a remote subversion server, so that if I = need I could recreate my storage pool with all its properties. I've noticed that in fact the `zpool history` is limited. I've many = automated daily/weekly/monthly snapshots creations and that "noise" is = filling the history log and overwrites my precious history. Today, my history log is only 13 valuable lines long: # zpool history | grep -v @ History for 'tank': 2011-02-22.14:17:10 zpool create tank da1 2011-06-30.16:46:38 zfs create tank/Sites/m 2011-06-30.16:46:38 zfs set refquota=3D500M tank/Sites/m 2011-07-11.10:46:16 zfs create tank/Sites/sites/egales-uk 2011-07-11.10:46:17 zfs set refquota=3D500M tank/Sites/sites/egales-uk 2011-07-11.10:46:41 zfs create tank/Sites/sites/egales-es 2011-07-11.10:46:42 zfs set refquota=3D500M tank/Sites/sites/egales-es 2011-07-11.10:46:47 zfs create tank/Sites/sites/egales-ro 2011-07-11.10:46:47 zfs set refquota=3D500M tank/Sites/sites/egales-ro 2011-07-11.10:46:51 zfs create tank/Sites/sites/egales-se 2011-07-11.10:46:52 zfs set refquota=3D500M tank/Sites/sites/egales-se 2011-07-12.10:56:14 zfs set = mountpoint=3D/Sites/a_supprimer/perso-truchaud-2011071210 = tank/user/truchaud 2011-07-12.11:04:37 zfs destroy -r tank/user/truchaud Every interesting events between 2011-02-22 and 2011-06-30 is gone, = that's more than 700 lines of ZFS command. Thanks to svn, I lose = nothing. My questions are:=20 - what is the zpool history size limit?=20 - and is it possible to increase its value? regards, patpro --Apple-Mail-7-96066748--
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