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Date: Mon, 01 Jun 2009 21:33:18 -0500
From: "James R. Van Artsdalen" <james-freebsd-current@jrv.org>
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To: Thomas Backman <serenity@exscape.org>
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Cc: freebsd-current@freebsd.org, Freddie Cash <fjwcash@gmail.com>
Subject: Re: ZFS panic under extreme circumstances (2/3 disks corrupted)
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Thomas Backman wrote:
> I have another unfortunate thing to note regarding this: after a
> reboot, it's even impossible to tell *which disk* has gone bad, even
> if the pool is "uncleared" but otherwise "healed". It simply says that
> a device has failed, with no clue as to which one, since they're all
> "ONLINE"!

Is there anything recorded in the pool history log about this?

The pool errlog is documented to be rotated after every scrub.