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Date: Thu, 1 Jul 2004 16:00:15 -0700
From: Paul Saab <ps@mu.org>
To: Alasdair Lumsden <enquiries@alivewww.com>
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cc: freebsd-hardware@freebsd.org
Subject: Re: 3Ware 8506 Series, 3DM, Upgrading to 9000 Series
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Alasdair Lumsden (enquiries@alivewww.com) wrote:
> On Thu, 2004-07-01 at 22:51, Paul Saab wrote:
> > Have you gotten a crashdump after one of these lockups?
> 
> I've got debugging symbols enabled in the kernel, and dumpdev set in
> rc.conf - if the box panics then the crash dump information gets written
> to /var/crash on next boot. However with this particular problem there
> is no panic.

There is a debugger where you can force a panic on a hang.  That's what
DDB/BREAK_TO_DEBUGGER/ALT_BREAK_TO_DEBUGGER are for.