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Date: Thu, 3 Jun 2010 17:34:40 -0400
From: Bill Moran <wmoran@potentialtech.com>
To: David Rhodus <sdrhodus@gmail.com>
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Organization: Bill Moran
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Subject: Re: Auto doadump()
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In response to David Rhodus <sdrhodus@gmail.com>:

> Is there a rc.conf variable to automatically save core on a panic and reboot ?
> Setting dumpdev="AUTO"  doesn't seem to do the trick.

Did you also set dumpdir?  Is dumpdir set to a location with enough
disk space to hold a kernel dump?  Is the swap device large enough to
hold the entire contents of memory + a little?

The docs are here:
http://www.freebsd.org/doc/en/books/developers-handbook/kerneldebug.html

-- 
Bill Moran
http://www.potentialtech.com
http://people.collaborativefusion.com/~wmoran/