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Subject: Re: Interesting fs corruption story
From: Ettore Perazzoli <ettore@ximian.com>
To: timw@splhi.com
Cc: linux-kernel@vger.kernel.org
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Date: 12 Mar 2001 07:44:40 -0500
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On 07 Mar 2001 12:22:22 -0800, Tim Wright wrote:
> On Tue, Mar 06, 2001 at 08:10:10PM -0500, Ettore Perazzoli wrote:
> > On 06 Mar 2001 17:01:02 -0800, Tim Wright wrote:
> Yes, it does. I have the drive running in UDMA mode 2, and get ~16MB/s from
> 'hdparm -t -T'. I have the "use DMA automatically" option turned on in the
> kernel, so I inherit the BIOS settings which are correct.
> 
> I've used standby and hibernation with complete success since.

  This seemed to fix the problem for me as well.  I have had DMA turned
on since then, and I have experienced no file system corruption anymore.
Thanks!

  Maybe the help message for this kernel option (CONFIG_APM_ALLOW_INTS)
should report in big blocky letters that disabling it might cause major
data loss with some drive/bios combinations?..  I was not aware that I
was touching such a sensitive parameter when I rebuilt the kernel, and
the help message didn't warn me in any way.

-- 
Ettore
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