Date: Thu, 30 Jul 2009 00:21:53 -0700 (PDT) From: Simun Mikecin <numisemis@yahoo.com> To: Ludwig Pummer <ludwigp@chip-web.com> Cc: freebsd-fs@freebsd.org Subject: Re: ZFS raidz1 pool unavailable from losing 1 device Message-ID: <46899.11156.qm@web37301.mail.mud.yahoo.com> In-Reply-To: <4A712290.9030308@chip-web.com> References: <4A712290.9030308@chip-web.com>
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Ludwin Pummer wrote:
> My system is 7.2-STABLE Jul 27, amd64, 4GB memory, just upgraded from 6.4-STABLE
> from last year. I just set up a ZFS raidz volume to replace a graid5 volume I
> had been using. I had it successfully set up using partitions across 4 disks,
> ad{6,8,10,12}s1e. Then I wanted to expand the raidz volume by merging the space
> from the adjacent disk partition. I thought I could just fail out the partition
> device in ZFS, edit the bsdlabel, and re-add the larger partition, ZFS would
> resilver, repeat until done. That's when I found out that ZFS doesn't let you
> fail out a device in a raidz volume. No big deal, I thought, I'll just go to
> single user mode and mess with the partition when ZFS isn't looking. When it
> comes back up it should notice that one of the device is gone, I can do a 'zfs
> replace' and continue my plan.
>
> Well, after rebooting to single user mode, combining partitions ad12s1d and
> ad12s1e (removed the d partiton), "zfs volinit", then "zpool status" just hung
> (Ctrl-C didn't kill it, so I rebooted). I thought this was a bit odd so I
> thought perhaps ZFS is confused by the ZFS metadata left on ad12s1e, so I
> blanked it out with "dd". That didn't help. I changed the name of the partition
> to ad12s1d thinking perhaps that would help. After that, "zfs volinit; zfs mount
> -a; zpool status" showed my raidz pool UNAVAIL with the message "insufficient
> replicas", ad{6,8,10}s1e ONLINE, and ad12s1e UNAVAIL "cannot open", and a more
> detailed message pointing me to http://www.sun.com/msg/ZFS-8000-3C. I tried
> doing a "zpool replace storage ad12s1e ad12s1d" but it refused, saying my zpool
> ("storage") was unavailable. Ditto for pretty much every zpool command I tried.
> "zpool clear" gave me a "permission denied" error.
Was your pool imported while you were repartitioning in single user mode?
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