Date: Sat, 16 May 1998 20:58:41 -0700 (PDT) From: Julian Elischer <julian@whistle.com> To: The Hermit Hacker <scrappy@hub.org> Cc: current@FreeBSD.ORG Subject: Re: Serial console, system hangs and DDB... Message-ID: <Pine.BSF.3.95.980516205539.17001P-100000@current1.whistle.com> In-Reply-To: <Pine.BSF.3.96.980516193749.580L-100000@thelab.hub.org>
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yes, that's what the BREAK_TO_DEBUGGER
option is for..
be carefull however,
rebooting the 2nd machine can sometimes produce a preak
and drop the first into the debugger .....
(similar for serial switches etc.)
julian
P.S.B I've considering adding a patch that detects a phrase like
" Hey stupid.. drop into the debugger"
:-)
On Sat, 16 May 1998, The Hermit Hacker wrote:
>
> Morning...
>
> I haven't enabled DDB in my kernel yet, but am curious...
>
> I have a server setup with 3.0-current and the CAM drivers that is
> periodically hanging on me (usually after a day or so of uptime)...that in
> itself is annoying, but more annoying is that i have no way to resetting
> that server, as it is 2500km away.
>
> I do have a serial console configured on it, so that I can do
> work, but I'm curious as to how I can break into DDB using the serial
> console, without my home machine breaking into it also? On our Sparc
> servers at work, you issue a ~# from a serial console to break down into
> the boot prom...do we have something similar we can do?
>
> Marc G. Fournier
> Systems Administrator @ hub.org
> primary: scrappy@hub.org secondary: scrappy@{freebsd|postgresql}.org
>
>
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