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Date: Wed, 6 Dec 2000 18:40:46 +0100
From: Jan Niehusmann <jan@gondor.com>
To: "Udo A. Steinberg" <sorisor@Hell.WH8.TU-Dresden.De>
Cc: Linux Kernel <linux-kernel@vger.kernel.org>
Subject: Re: Trashing ext2 with hdparm
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In-Reply-To: <3A2E767B.D74B24B5@Hell.WH8.TU-Dresden.De>; from sorisor@Hell.WH8.TU-Dresden.De on Wed, Dec 06, 2000 at 06:25:15PM +0100
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On Wed, Dec 06, 2000 at 06:25:15PM +0100, Udo A. Steinberg wrote:
> hdparm -tT /dev/hdb1 does the trick here.
> 
> After that, several files are corrupted, such as /etc/mtab.
> Reboot+fsck fixes the problem, however e2fsck never finds
> any errors in the fs on disk.

I'm currently trying to isolate a bug that is triggered by invalidate_buffers
and leads to in-memory filesystem corruption. 
As hdparm -tT AFAIK calls invalidate_buffers (through BLKFLSBUF), 
this may be related.

Jan

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