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Date: Wed, 15 Oct 2008 22:55:54 -0400
From: heliocentric@gmail.com
To: "Alfred Perlstein" <alfred@freebsd.org>
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Cc: freebsd-stable@freebsd.org
Subject: Re: System hanging during dump
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On 10/15/08, Alfred Perlstein <alfred@freebsd.org> wrote:
> * heliocentric@gmail.com <heliocentric@gmail.com> [081015 12:00] wrote:
>>
>> Perhaps a 'show locks' with an 8-CURRENT kernel with WITNESS enabled
>> will shed light on the problem? As most of the filesystem locking
>> doesn't use lockmgr in 7-STABLE, it would be silent with that kernel.
>
> I might be wrong here, but I think it's actually that lockmgr
> in 7.x isn't watched by witness (but it is in 8.x) is why you
> can only see this warnings in 8.x.
>
> (In other words, filesystems use lockmgr in just about every version
> of FreeBSD back to 2.x or before.)

Yes, you're right. I misread the email about the change.