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Date: Thu, 26 Apr 2007 23:11:24 -0400
From: Kris Kennaway <kris@obsecurity.org>
To: Steve Kargl <sgk@troutmask.apl.washington.edu>
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Cc: freebsd-current@freebsd.org, Kris Kennaway <kris@obsecurity.org>
Subject: Re: Panic on boot. How do I get a kernel dump.
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On Thu, Apr 26, 2007 at 08:00:17PM -0700, Steve Kargl wrote:
> On Thu, Apr 26, 2007 at 09:43:17PM -0400, Kris Kennaway wrote:
> > On Thu, Apr 26, 2007 at 06:37:42PM -0700, Steve Kargl wrote:
> > > 
> > > Re-read the text that you quoted.  Tom doesn't have 
> > > dumpdev set, so there is no core for savecore to
> > > retrieve.  ISTR, that one could set dumpdev in the
> > > loader.  At the loader prompt, do 
> > > 
> > > set dumpdev="/dev/ad0s2b"  
> > 
> > I don't think this has existed for many years (it was removed during
> > GEOM development).
> > 
> 
> Bummer.  I know I used this a long time ago to do some debugging.
> Is there a sysctl tunable that can be set in the loader?

To clarify, there is no way to set the dumpdev in the loader, by
tunable or any other method :)

Kris