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Date:      Mon, 22 Feb 2016 12:41:09 -0500
From:      Dan Langille <dan@langille.org>
To:        freebsd-questions@freebsd.org
Subject:   ZFS: i/o error - all block copies unavailable
Message-ID:  <5C208714-5117-4089-A872-85A6375856B7@langille.org>

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I have a FreeBSD 10.2 (with freebsd-update applied) system at home which =
cannot boot. The message is:

ZFS: i/o error - all block copies unavailable
ZFS: can't read MOS of pool system
gptzfsboot: failed to mount default pool system

The screen shot is =
https://twitter.com/DLangille/status/701611716614946816

The zpool name is 'system'.

I booted the box via mfsBSD thumb drive, and was able to import the =
zpool: https://gist.github.com/dlangille/6da065e309301196b9cd =
<https://gist.github.com/dlangille/6da065e309301196b9cd>;

I have also run: "gpart bootcode -b /boot/pmbr -p /boot/gptzfsboot -i 1 =
XXX" against each drive. I did with the the files
provided with mfsBSD and with the files from my local 10.2 system.  =
Neither solution changed the booting problem.

Ideas?  Suggestions?

--
Dan Langille - BSDCan / PGCon
dan@langille.org





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