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Date: Fri, 24 Nov 2000 00:32:55 -0500 (EST)
From: Alexander Viro <viro@math.psu.edu>
To: Neil Brown <neilb@cse.unsw.edu.au>
cc: "Mohammad A. Haque" <mhaque@haque.net>,
        linux-kernel <linux-kernel@vger.kernel.org>,
        Tigran Aivazian <tigran@veritas.com>
Subject: Re: ext2 filesystem corruptions back from dead? 2.4.0-test11
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On Fri, 24 Nov 2000, Neil Brown wrote:

> I ran my test script, which builds a variety of raid5 arrays with
> varying numbers of drives and chunk sizes, and runs mkfs/bonnie/dbench
> on each array, and it got through about 8 file systems but choked on
> the 9th by trying to allocate lots of blocks in the system zone (after
> running for about an hour). 

Bloody interesting. I don't see anything recent that could affect the
areas in question. Intersting versions to check: 11-pre5 and 11-pre6.
It smells like buffer cache corruption, but I don't see anything
relevant. __generic_unplug_device() change loock pretty innocent,
ditto for bh_kmap() ones in raid5 and on ext2 side we had two obviously
equivalent replacements (pre5->pre6). No buffer.c changes, no VM ones.
Urgh.

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