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Date: Fri, 26 Oct 2007 15:41:15 +0400
From: "Andrey V. Elsukov" <bu7cher@yandex.ru>
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To: "Chris H." <chris#@1command.com>
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Cc: "\[FBSDS\]" <freebsd-stable@freebsd.org>
Subject: Re: dumpdev question (probably stupid)
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Chris H. wrote:
> OK then. If I understand you correctly, I simply need to create:
> /var/crash (the default)

Yes. Also you need a swap size > ram size.

> add the following to /etc/rc.conf:
> dumpdev="AUTO"
> dumpdir="/var/crash"
> 
> bounce the server and ensure that /etc/rc.d/dumpon is started
> immediately after the boot process has completed.
> Correct?

if you don't want reboot your machine after changing rc.conf
you can run `/etc/rc.d/dumpon start`. It will mark your swap as
a dumpdev. At the boot time /etc/rc.d/dumpon will be started
automatically (if "dumpdev" is set).
After system crash the kernel memory dump will be saved to the dempdev
and after reboot dump will be extracted from the swap into dumpdir
by the savecore.

-- 
WBR, Andrey V. Elsukov