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Date:      Fri, 12 May 2000 10:27:15 -0700
From:      Marco Molteni <molter@sofia.csl.sri.com>
To:        freebsd-hackers@FreeBSD.ORG
Cc:        Greg Lehey <grog@lemis.com>
Subject:   Re: kernel panics at boot, how to specify dump device?
Message-ID:  <20000512102715.A1281@sofia.csl.sri.com>
In-Reply-To: <20000512090124.C10505@freebie.lemis.com>; from grog@lemis.com on Fri, May 12, 2000 at 09:01:24AM %2B0930
References:  <20000511122038.A99408@sofia.csl.sri.com> <20000511130359.Y337@beastie.localdomain> <20000512090124.C10505@freebie.lemis.com>

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On Fri, 12 May 2000, Greg Lehey wrote:

> On Thursday, 11 May 2000 at 13:03:59 -0700, Brian O'Shea wrote:
>
> > On Thu, May 11, 2000 at 12:20:38PM -0700, Marco Molteni wrote:
> >
> > > I have a 4-STABLE kernel that panics at boot. How do I force the kernel
> > > to core dump?

[..]

> > From the LINT kernel config file:
> >
> > config		kernel	root on wd0 dumps on wd0
> 
> That's not there in 4.0.  I believe most of this was vandalized some
> time late last year.

Yes, I remember having seen it in the past.

> I've been running in to this problem too.

Hehe, I've seen your emails on the subject in the archive ;-)

> I'm planning to add an option to ddb where you can specify the dump
> device at the time where you want to take the dump.

Looks like a good idea.

> Marco, where exactly is it panicing?  Do you have ddb in the kernel?

Yes, I have ddb in the kernel, although I am not good at it (I prefer
symbolic debuggers ;-). It is panicing in the initialization of the
routing tables, probably because I am playing with them :-)

Anyway, reading the email archives I found a suggestion by bde (I
think) who said: who needs a core dump, if you can use remote gdb?
Well, since I have two machines, I found that remote gdb is the way to
go :-)

Thanks
Marco
-- 
Marco Molteni "rough consensus and running code"
SRI International, System Design Laboratory


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