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Date: Thu, 22 Nov 2012 11:41:54 +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 20:11 Andriy Gapon said the following:
> on 21/11/2012 20:08 Willem Jan Withagen said the following:
>> On 2012-11-21 19:05, Andriy Gapon wrote:
>>> on 21/11/2012 19:48 Willem Jan Withagen said the following:
> [snip]
>>>> It seems to to be waiting/working in the ZFS code to get things unmounted.
>>>
>>> Yeah, oops, this is a known ZFS deadlock in zfs_freebsd_reclaim -> zfs_zget path.
>>> I may commit my fix for it to head on the next weekend.
>>> You may share this information with the list.
>>
>> Any change of getting this back into 9.1?
>> Preferably before 9.1-RELEASE, but otherwise real soon after that.
>>
>> I'm the perfect test guinea-pig, it happens every time I reboot.
> 
> I will definitely MFC it to stable/9, just not sure if I would be able to do it
> before New Year.  It definitely won't be in 9.1.  I'll send you a patch later.
> 

The patch:
http://people.freebsd.org/~avg/zfs-vfs.4.diff

-- 
Andriy Gapon