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Date: Sat, 18 Dec 2010 14:11:23 -0600
From: "James R. Van Artsdalen" <james-freebsd-fs2@jrv.org>
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To: Sergey Gavrilov <srg.gavrilov@gmail.com>
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Cc: freebsd-fs@freebsd.org
Subject: Re: ZFS recovery after power failure
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On 12/18/2010 2:21 AM, Sergey Gavrilov wrote:
> Hi all!
> After hard power off pool's faulted.
> When I'm trying zpool import pool2 I've got:
> cannot import 'pool2': I/O error

I do know how to recover pools.  But I do want to know how  it failed.

Please post the output of "uname -a" so we know what system and version
of FreeBSD was used.

Also, what of hard disks are these and how are they attached to the system?