Date: Wed, 14 Aug 2013 12:44:29 -0700 From: Stan Grishin <stangri@melmac.net> To: Artem Belevich <art@freebsd.org> Cc: freebsd-fs <freebsd-fs@freebsd.org> Subject: Re: kernel panics because of the corrupted zpool meta-data Message-ID: <9274C3CA-36F5-4EDC-A645-C612C6D71E8A@melmac.net> In-Reply-To: <CAFqOu6hcrUjyAmRqQXKBdZq6nG5ZhG=76pukn3U2nR%2BWAaqNTw@mail.gmail.com> References: <96CA3382-A3C7-472A-82C9-20C1ACACD5B9@melmac.net> <CAFqOu6hcrUjyAmRqQXKBdZq6nG5ZhG=76pukn3U2nR%2BWAaqNTw@mail.gmail.com>
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Artem, Thanks for you suggestion. No, I haven't tried that particular command. = But how can I get the transaction ID if even simple zpool import (no = parameters) causes kernel panics? -Stan On 2013-08-14, at 11:27 AM, Artem Belevich <art@freebsd.org> wrote: >=20 >=20 >=20 > 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. >=20 > 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). >=20 > 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. >=20 > 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. >=20 > PPS. zdb -l works and reports valid information about zpool = configuration, but I can't fix any problems with zdb. >=20 >=20 > 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.=20 >=20 > 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 >=20 > --Artem >=20
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