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Date:      Sat, 28 Apr 2007 12:03:01 +1000
From:      Peter Jeremy <peterjeremy@optushome.com.au>
To:        Tom Cumming <tcumming123@gmail.com>
Cc:        freebsd-current@freebsd.org
Subject:   Re: Panic on boot. How do I get a kernel dump.
Message-ID:  <20070428020301.GI840@turion.vk2pj.dyndns.org>
In-Reply-To: <de193d070704271622o805ca68ja332a08139269420@mail.gmail.com>
References:  <de193d070704261535k11e5de1eh12842a4ab340a971@mail.gmail.com> <20070427012401.GZ2445@obelix.dsto.defence.gov.au> <20070427013742.GA51877@troutmask.apl.washington.edu> <20070427014317.GA17436@xor.obsecurity.org> <20070427030017.GA52347@troutmask.apl.washington.edu> <20070427031124.GA18527@xor.obsecurity.org> <de193d070704270831y6f57e559xfaf036338c263100@mail.gmail.com> <20070427180021.GA57409@xor.obsecurity.org> <20070427222116.GG840@turion.vk2pj.dyndns.org> <de193d070704271622o805ca68ja332a08139269420@mail.gmail.com>

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On 2007-Apr-27 16:22:48 -0700, Tom Cumming <tcumming123@gmail.com> wrote:
>  .. or number 3) I can use my existing dump analysis tools and scripts to
>examine the dump, and I cannot run the scripts from the console prompt.

You can probably do this using a remote GDB session.  See
http://www.freebsd.org/doc/en_US.ISO8859-1/books/developers-handbook/kernel=
debug-online-gdb.html

>I don't follow the geom code... is there a place in geom where I could put
>something like, geom->dumpdev =3D "mydevice"?

No.  Kernel dumping now relies far more on the device infrastructure
and isn't amenable to static initialisation.  If you feel like looking,
check out kern_shutdown.c:dumper.

--=20
Peter Jeremy

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