Date: Thu, 11 Aug 2011 20:36:20 +0300 From: Andriy Gapon <avg@FreeBSD.org> To: Steven Hartland <killing@multiplay.co.uk> Cc: freebsd-stable@FreeBSD.org Subject: Re: debugging frequent kernel panics on 8.2-RELEASE Message-ID: <4E441314.6060606@FreeBSD.org> In-Reply-To: <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> <6F08A8DE780545ADB9FA93B0A8AA4DA1@multiplay.co.uk>
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on 11/08/2011 20:14 Steven Hartland said the following: > ----- 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. 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
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