Re: Dumping kernel in SMP env

Ivan Voras wrote:
> Willem Jan Withagen wrote:
>> Ivan Voras wrote:
>>> Willem Jan Withagen wrote:
>>>> Hi,
>>>>
>>>> Once again trying to get a little further with the freezes and lockups.
>>>> But panic-ing the kernel from the debugger only works with one
>>>> processor. Doing it with both processors active just generates 2
>>>> backtraces, but no dump.
>>> If you're asking if kernel dumps work on 8-CURRENT on SMP then the
>>> answer is yes - I made a couple of them the day before yesterday.
>>>
>>>> Is this a known fact? There was a similar question beginning of the
>>>> month asking about 'call doadump' not working, without an answer.
>>>> If it should work, I'll try and recreate the traceback.
>>> Both automatic and doadump work for me.
>> Right, that was the question.
>>
>> So then I have a problem there that needs to be fixed first.
>> I'll try to get a serial console working and capture the trace and or
>> any other stuff that can help.
>>
>> Suggestions for things to look at are welcome
> 
> Your problem might be caused by bad hardware. I don't have anything
> specific to suggest, except looking at
> http://www.freebsd.org/doc/en_US.ISO8859-1/books/developers-handbook/kerneldebug.html

That's why I'm going to get 5.x, 6.x or 7.x running first. I'm pretty 
confident that one of those did work quite wel.

The board did have some bad temperament when amd64 first got started, it was 
one of the first dual opteron MSI boards at that time. Then it took a while 
to get going as well.

--WjW