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Date: Wed, 21 Nov 2012 19:11:05 +0200
From: Andriy Gapon <avg@FreeBSD.org>
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To: Willem Jan Withagen <wjw@digiware.nl>
Subject: Re: Some new hardware with 9.1 does not reboot easily
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on 21/11/2012 19:09 Andriy Gapon said the following:
> on 21/11/2012 19:06 Willem Jan Withagen said the following:
>> Nothing that stands out for me, but then I'm not into FreeBSD kernels.
>> But there is certainly no more userspace processes running other than
>> reboot.....
>>
>> Certainly no postfix, that could complain about missing libpcre.so.1
>> That seems to be something that should have been flushed from the
>> print_buffer before.
>>
>> What I do see i a huge amount of ZFS threads....
>>
>> Rebooting from DDB is instantaneously...
>>
>> So I'm not certain what to look for further?
> 
> Perhaps share the output if you are able to capture it...

State of the init process should be more interesting.
You can switch to it (using thread <id>) and capture its stack trace ('bt').

-- 
Andriy Gapon