Date: Thu, 11 Aug 2011 18:14:05 +0100 From: "Steven Hartland" <killing@multiplay.co.uk> To: "Andriy Gapon" <avg@FreeBSD.org> Cc: freebsd-stable@FreeBSD.org Subject: Re: debugging frequent kernel panics on 8.2-RELEASE Message-ID: <6F08A8DE780545ADB9FA93B0A8AA4DA1@multiplay.co.uk> References: <47F0D04ADF034695BC8B0AC166553371@multiplay.co.uk><A71C3ACF01EC4D36871E49805C1A5321@multiplay.co.uk><4E4380C0.7070908@FreeBSD.org><EBC06A239BAB4B3293C28D793329F9CA@multiplay.co.uk> <4E43E272.1060204@FreeBSD.org> <62BF25D0ED914876BEE75E2ADF28DDF7@multiplay.co.uk> <4E440865.1040500@FreeBSD.org>
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----- Original Message -----
From: "Andriy Gapon" <avg@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.
Regards
Steve
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