Date: Tue, 8 Mar 2005 08:33:29 +0100 From: Jeremie Le Hen <jeremie@le-hen.org> To: Doug White <dwhite@gumbysoft.com> Cc: Jeremie Le Hen <jeremie@le-hen.org> Subject: Re: dumpdev='AUTO' (was: Reproducible Panic with port iplog) Message-ID: <20050308073329.GJ94451@obiwan.tataz.chchile.org> In-Reply-To: <20050307184301.S32508@carver.gumbysoft.com> 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>
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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
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