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Date:      Fri, 29 Jul 2005 09:27:30 +0100 (BST)
From:      Robert Watson <rwatson@FreeBSD.org>
To:        "Marc G. Fournier" <scrappy@hub.org>
Cc:        freebsd-stable@freebsd.org
Subject:   Re: Consistent file system hang with RELENG_6 of today ...
Message-ID:  <20050729092647.Q74149@fledge.watson.org>
In-Reply-To: <20050729001252.N1194@ganymede.hub.org>
References:  <20050728231728.E968@ganymede.hub.org> <20050729001252.N1194@ganymede.hub.org>

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On Fri, 29 Jul 2005, Marc G. Fournier wrote:

> Now, as most of the "old timers" here know, my jail environment makes 
> use of unionfs to "mount" a template layer, to share common binaries 
> amongst the VMs ...
>
> I have tried two different ways of doing this, both result in the exact 
> same 'file system hang' ... and I have a core of each 'method' ...
>
> The first was to use mount_devfs to, of course, mount the /dev directory 
> within the jail itself ...
>
> The second, I used the same /dev that existed within the jail, based on 
> bulding a jail using a 4.x system ...
>
> In both cases, the hang appears to be at the same spot, where 'sendmail' 
> (in this case, the postfix port) starts up ...

It would also be interesting to know: if you take unionfs out of the 
picture (i.e., you use a regular file system for testing purposes), does 
the problem go away?

Robert N M Watson



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