From owner-freebsd-current@FreeBSD.ORG  Tue Mar  8 07:33:32 2005
Return-Path: <owner-freebsd-current@FreeBSD.ORG>
Delivered-To: freebsd-current@freebsd.org
Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125])
	by hub.freebsd.org (Postfix) with ESMTP id 4209C16A4CE
	for <freebsd-current@freebsd.org>;
	Tue,  8 Mar 2005 07:33:32 +0000 (GMT)
Received: from postfix3-1.free.fr (postfix3-1.free.fr [213.228.0.44])
	by mx1.FreeBSD.org (Postfix) with ESMTP id E864643D2D
	for <freebsd-current@freebsd.org>;
	Tue,  8 Mar 2005 07:33:31 +0000 (GMT)
	(envelope-from tataz@tataz.chchile.org)
Received: from tatooine.tataz.chchile.org
	(vol75-8-82-233-239-98.fbx.proxad.net [82.233.239.98])
	by postfix3-1.free.fr (Postfix) with ESMTP id 0B28717349E;
	Tue,  8 Mar 2005 08:33:30 +0100 (CET)
Received: by tatooine.tataz.chchile.org (Postfix, from userid 1000)
	id B1908407C; Tue,  8 Mar 2005 08:33:29 +0100 (CET)
Date: Tue, 8 Mar 2005 08:33:29 +0100
From: Jeremie Le Hen <jeremie@le-hen.org>
To: Doug White <dwhite@gumbysoft.com>
Message-ID: <20050308073329.GJ94451@obiwan.tataz.chchile.org>
References: <2861.172.16.0.199.1109814152.squirrel@172.16.0.199>
	<20050303015438.GF15329@obiwan.tataz.chchile.org>
	<2910.172.16.0.199.1109816379.squirrel@172.16.0.199>
	<20050304230723.T4084@carver.gumbysoft.com>
	<1646.172.16.0.199.1110049506.squirrel@172.16.0.199>
	<20050307184301.S32508@carver.gumbysoft.com>
Mime-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
In-Reply-To: <20050307184301.S32508@carver.gumbysoft.com>
User-Agent: Mutt/1.5.8i
cc: Mike Jakubik <mikej@rogers.com>
cc: freebsd-current@freebsd.org
cc: Jeremie Le Hen <jeremie@le-hen.org>
Subject: Re: dumpdev='AUTO' (was: Reproducible Panic with port iplog)
X-BeenThere: freebsd-current@freebsd.org
X-Mailman-Version: 2.1.1
Precedence: list
List-Id: Discussions about the use of FreeBSD-current
	<freebsd-current.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-current>,
	<mailto:freebsd-current-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-current>
List-Post: <mailto:freebsd-current@freebsd.org>
List-Help: <mailto:freebsd-current-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-current>,
	<mailto:freebsd-current-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Tue, 08 Mar 2005 07:33:32 -0000

Hi,

> > Typing "call doadump" in the kernel debugger does work. Is there no way to
> > have the kernel automatically do a dump when the system panics and there
> > is no debugger compiled in?
> 
> That should be the default behavior if a dumpdev is set (in rc.conf with
> "dumpdev" or manually with the dumpon(8) command).

This is a little bit off-topic, but I set the rc.conf(5) dumpdev
variable to "AUTO".  This should work (this is from rc.d/dumpon) :

%%%
        case ${dumpdev} in
        [Nn][Oo] | '')
                ;;
        [Aa][Uu][Tt][Oo])
                while read dev mp type more ; do
                        [ "${type}" = "swap" ] || continue
                        [ -c "${dev}" ] || continue
                        if /sbin/dumpon -v "${dev}" 2>/dev/null; then
                                # Make a symlink in devfs for savecore
                                ln -s ${dev} /dev/dumpdev
                                return 0
                        fi
                done </etc/fstab
%%%

Nevertheless, when my box panices, it drops to DDB and I always need to
call doadump() manually.

Regards,
-- 
Jeremie Le Hen
jeremie at le-hen dot org