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Date: Wed, 19 Mar 1997 11:55:10 -0600
From: Jonathan Lemon <jlemon@americantv.com>
To: Michael Smith <msmith@atrad.adelaide.edu.au>
Cc: freebsd-current@FreeBSD.org
Subject: Re: Panics on reboot/halt/shutdown with MFS
References: <19970319001821.63996@right.PCS> <199703190636.RAA23128@genesis.atrad.adelaide.edu.au>
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In-Reply-To: <199703190636.RAA23128@genesis.atrad.adelaide.edu.au>; from Michael Smith on Mar 03, 1997 at 05:06:13PM +1030
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On Mar 03, 1997 at 05:06:13PM +1030, Michael Smith wrote:
> Jonathan Lemon stands accused of saying:
> > 
> > I spent some time digging into this.  The symptoms are that the system
> > panics/locks up when executing reboot() when there is a MFS mounted
> > filesystem.  (freebsd bugs #3012, #3026)
> > 
> > When MFS is not mounted, the system shuts down without a problem.
> ...
> > Perhaps someone with a CVS tree available could look at the recent changes
> > that were made to 2_2_RELENG?  This only just started happening.
> 
> Might this be because the MFS now has a non-NULL mountpoint?  There
> was a change recently to fill in the mountpoint when the MFS' vnode 
> is allocated.

I don't think so; I remember that change, and it didn't hang the system
when I halted.  (This was on my home machine, that gets shut down every
night).  However, I'll back that change out and see if it still happens.

The vnode in question is of v_type == VBLK, and v_tag == VT_NON, where I
was expecting a v_tag of VT_MFS.  Also, my preliminary inspections show
that it doesn't appear to be always happening at the same point.
--
Jonathan