From owner-freebsd-hackers@FreeBSD.ORG  Mon Feb 14 08:40:32 2005
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Date: Mon, 14 Feb 2005 09:39:53 +0100
From: Gerald Heinig <gheinig@syskonnect.de>
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To: Ashwin Chandra <ashcs@ucla.edu>
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cc: freebsd-hackers@freebsd.org
Subject: Re: VMCORE NOT FOUND
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Ashwin Chandra wrote:
> ryan,
> i think i was a bit vague in my email. I am correctly usnig the swap 
> device and dump directory. Before the system reboots the core should be 
> saved from the swap device (before it mounts) and into the path that i 
> specified. dumpdev="/dev/ad0s1b", our 2gb swap device and 
> dumpdir="/usr/crash"
> So I am doing all this correctly, yet still no dump comes up and I am 
> not sure why! =(

Hi Ashwin,

for what it's worth, I have exactly the same problem on my Dell GX 
260/FreeBSD 5.3 RELEASE machine. When it panics, it says it's starting 
to write a dump, but doesn't continue. The disk lights remain off, so 
there's definitely no activity.
Strangely enough, when I use my Dual Tyan box (AMD-based) with a kernel 
compiled with the same config file, I get a dump without ahny problems.
I mentioned this on -hackers a few weeks ago.

Cheers,
Gerald