Current method of dumping a processor?

Greg 'groggy' Lehey grog at
Mon Aug 16 18:35:29 PDT 2004

On Friday, 13 August 2004 at  1:07:41 +0200, Radek Kozlowski wrote:
> 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
> I then learnt that I can use call doadump in ddb and have been using
> that since then.

Thanks.  Yes, this seems to work.  Are we agreed that it's a bug that
the 'panic' command just hangs?

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