Date: Wed, 14 Aug 2013 11:27:47 -0700 From: Artem Belevich <art@freebsd.org> To: Stan Grishin <stangri@melmac.net> Cc: freebsd-fs <freebsd-fs@freebsd.org> Subject: Re: kernel panics because of the corrupted zpool meta-data Message-ID: <CAFqOu6hcrUjyAmRqQXKBdZq6nG5ZhG=76pukn3U2nR%2BWAaqNTw@mail.gmail.com> In-Reply-To: <96CA3382-A3C7-472A-82C9-20C1ACACD5B9@melmac.net> References: <96CA3382-A3C7-472A-82C9-20C1ACACD5B9@melmac.net>
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On Wed, Aug 14, 2013 at 7:33 AM, Stan Grishin <stangri@melmac.net> wrote: > As recommended in FreeBSD forums I'm posting the message here. > > I have a peculiar case where NAS4Free has corrupted the meta-data on my > 4-disk raidz pool and a few flavours of FreeBSD and a latest version of > OpenIndiana I've tried go down just when I try zpool import with no > additional parameters (kernel panics). > > I have more or less given up of my precious data, but if any FreeBSD dev > wants to investigate or help me fix the problem I'd gladly try any special > build you'd want me to. > > PS. I've tried removing disks one by one, but any 3 out of 4 cause kernel > panics and with just two I can't get my data back. > > PPS. zdb -l works and reports valid information about zpool configuration, > but I can't fix any problems with zdb. > > Did you try rolling back your pool to a previous state with 'zpool import -T <txg>' ? It will attempt to import the pool as it was at the time particular transaction group was committed. Here's more info (it's for solaris, but should work on recent FreeBSD, too): http://www.c0t0d0s0.org/archives/7621-Back-in-time-or-zpool-import-T.html --Artem
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