linux-kernel - Re: Possible mptsas regression post 3.5.0

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Message-ID: <CAEhu1-5VLuFsZomDZ1yxixqD7oLEhoXs+N698_VBkdGz5trK8g@mail.gmail.com>
Date:	Fri, 24 Aug 2012 15:34:18 -0400
From:	John Drescher <drescherjm@...il.com>
To:	LKML <linux-kernel@...r.kernel.org>
Subject: Re: Possible mptsas regression post 3.5.0

On Thu, Aug 23, 2012 at 1:34 PM, John Drescher <drescherjm@...il.com> wrote:
> Over the last few weeks I have done some reliability testing with
> mdraid6 on a machine with 2 lsi mptsas controllers and 13 SATA I
> drives. My testing involved physically hot removing a drive forcing
> the raid to grab a spare and rebuild. This worked great for the 5 or
> so times I did this on gentoo-sources-3.5.0 and lower. However any
> attempt to do this on gentoo-sources-3.5.1 or even the 3.6-rc2 git
> resulted in a total lockup of the array. I originally thought this was
> a mdadm regression and posted about that last week here:
>
> https://lkml.org/lkml/2012/8/17/503
>

I have bisected the kernel a few times now and the problem was
introduced between
3.5.0.00007-ged29dbd
3.5.0.00015-g4d9157e

After the raid rebuilds again I will bisect again and see if I can
narrow it down to the exact patch.

John
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