debugging frequent kernel panics on 8.2-RELEASE

[Andriy Gapon]

on 11/08/2011 20:14 Steven Hartland said the following:
> ----- Original Message ----- From: "Andriy Gapon" <avg at FreeBSD.org>
> 
>>>> I would really appreciate if you could try to reproduce the
>>>> problem with the patch that I sent earlier.
>>>
>>> Hi Andriy, what's the risk of this patch causing other issues?
>>
>> I can not estimate.
>> The code is supposed to affect only things that happen after panic,
>> so make your guess.
> 
> So in theory should be good.
> 
>>> I ask as to get results from this we've going to have to roll it
>>> out to over 130+ production machines, so I'd like to be clear on
>>> the risks before I sign that off.
>>
>> I will be happy if you try the patch on a single machine
>> provided the problem is that reproducible.
> 
> Unfortunately although its happening a lot its taking the
> large numbers of machines to make it that way.
> 
> Over the 130+ machines we're seeing between 3 and 8 panics
> a day, so based on that we could be waiting quite some time
> for a specific machine to panic :(
> 
> Don't think we're going to make any progress on this in the current
> state so I think we'll give it a shot.

Maybe test it on couple of machines first just in case I overlooked something
essential, although I have a report from another use that the patch didn't break
anything for him (it was tested for an unrelated issue).


-- 
Andriy Gapon