Current method of dumping a processor?

[Radek Kozlowski]

On Fri, Aug 13, 2004 at 07:28:59AM +0930, Greg 'groggy' Lehey wrote:
> I've tried it on kernels built in January, May and yesterday.  In each
> case, I did:
> 
>   dumpon /dev/ad0s2b
> 
> (for appropriate values of ad0s2b).  All kernels include ddb.  I
> entered the debugger with ctrl-alt-esc and entered "panic".  The
> kernel from January dumps just fine.  The kernels from May and August
> hang.
> 
> Am I doing something wrong?  Has something else changed?  Does anybody
> else have this problem?

I also had this problem back in June when I was trying to get a crash
dump, but nobody replied (see
http://lists.freebsd.org/pipermail/freebsd-current/2004-June/029434.html).
I then learnt that I can use call doadump in ddb and have been using
that since then.

-Radek