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Date: Tue, 25 Nov 2008 19:44:49 +0100 (CET)
From: Wojciech Puchar <wojtek@wojtek.tensor.gdynia.pl>
To: Frank Solensky <frank@solensky.org>
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Cc: freebsd-questions <freebsd-questions@freebsd.org>
Subject: Re: Kernel crash before dumpon
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>
> The page includes the following suggestion on how I might be able to
> proceed:
>        Alternatively, the dump device can be hard-coded via the
>        dump clause in the config(5) line of a kernel configuration
>        file. This approach is deprecated and should be used only
>        if a kernel is crashing before dumpon(8) can be executed.
>
> I tried adding
>        config dump "/dev/ad4s3b"
> to the configuration file but that option appears to be no longer
> supported: the config command gives an error message of:
>        root/dump/swap specification obsolete
>
> Is the paragraph above obsolete?  If so, what's the preferred way to
> collect the dump?
>
> Thanks
>
>
in rc.conf

dumpdev="/dev/dumpdevice"