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Date:      Tue, 19 Dec 2006 13:44:16 +0100 (CET)
From:      Oliver Fromme <olli@lurza.secnetix.de>
To:        freebsd-stable@FreeBSD.ORG, Trond.Endrestol@fagskolen.gjovik.no
Subject:   Re: tmpmfs="YES" and going from single user to multi user mode
Message-ID:  <200612191244.kBJCiGf5055638@lurza.secnetix.de>
In-Reply-To: <20061217100614.R47398@ramstind.fig.ol.no>

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Trond Endrestøl wrote:
 > After going to single user mode and back to multi user mode on a 
 > system with tmpmfs="YES" in /etc/rc.conf, I wound up with these 
 > filesystems:
 > 
 > trond@enterprise:~>df
 > Filesystem  1K-blocks    Used   Avail Capacity  Mounted on
 > /dev/ad0s1a   9195750 3179348 5280742    38%    /
 > devfs               1       1       0   100%    /dev
 > /dev/md0        63214      14   58144     0%    /tmp
 > procfs              4       4       0   100%    /proc
 > /dev/md1        63214      20   58138     0%    /tmp
 > 
 > There should either be a shutdown script that unmounts /tmp when 
 > tmpmfs="YES" and /tmp is indeed mounted as a MFS, or the startup 
 > script should check to see if /tmp is already mounted (as a MFS) 
 > before attempting mount the MFS (again).

That problem doesn't occur when you mount /tmp via /etc/fstab
instead of tmpfs="YES" in /etc/rc.conf.  I always prefer to
use /etc/fstab for the above reason and others.  And entry
like the following will do (for a 64 MB /tmp):

md    /tmp    mfs    rw,nosuid,async,-s64m    0    0

Best regards
   Oliver

-- 
Oliver Fromme,  secnetix GmbH & Co. KG, Marktplatz 29, 85567 Grafing
Dienstleistungen mit Schwerpunkt FreeBSD: http://www.secnetix.de/bsd
Any opinions expressed in this message may be personal to the author
and may not necessarily reflect the opinions of secnetix in any way.

"Unix gives you just enough rope to hang yourself --
and then a couple of more feet, just to be sure."
        -- Eric Allman



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