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From: Jung-uk Kim <jkim@FreeBSD.org>
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Date: Fri, 17 Jun 2011 20:04:44 -0400
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Cc: Aric Gregson <aorchid@mac.com>
Subject: Re: Hang During Startup on ZFS Boot (intermittent)
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On Friday 17 June 2011 07:54 pm, Aric Gregson wrote:
> Hello,
>
> I have installed 9-Current from the May 12 2011 iso that was
> available and I used a ZFS boot disk and gpt partition as
> described. I have a problem on reboot that booting stalls during
> listing of the SMP CPU start-up (?) after listing the 15th or 16th
> CPU. I must power-down the computer to initiate a new restart once
> it stalls. Sometimes I need to power-down two or three times before
> it will proceed through the start-up. There does not appear to be
> anything written to a log file during failed start-ups.
>
> How would I go about attempting to find out why this is occurring
> (presuming it is not a known problem)? It makes me nervous that
> powering down like that will eventually cause a problem preventing
> any reboot. I have posted the most recent system log from a boot.
> Thanks for any pointers in advance.

[SNIP]

I believe the problem was fixed by the following commit:

http://svn.freebsd.org/changeset/base/222032

Jung-uk Kim