From: Rogier Wolff <R.E.Wolff@BitWizard.nl>
To: Alan Cox <alan@lxorguk.ukuu.org.uk>
Cc: Romano Giannetti <romano@dea.icai.upco.es>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
Subject: Re: Driver retries disk errors.
Date: Thu, 2 Sep 2004 01:14:34 +0200 [thread overview]
Message-ID: <20040901231434.GD28809@bitwizard.nl> (raw)
In-Reply-To: <1094049877.2787.1.camel@localhost.localdomain>
On Wed, Sep 01, 2004 at 03:44:38PM +0100, Alan Cox wrote:
> On Mer, 2004-09-01 at 16:28, Romano Giannetti wrote:
> > Just a question from a kernel-almost-illiterate. Could this explain the
> > behavior of my laptop yesterday, reading a damaged DVD? I had to wait almost
> > one full minute of retry until being able to kill xine...
>
> Thats the block layer. Its actually hard to fix the kill -9 case.
I don't think so. It starts with the ide-cd level driver
doing 8 retries. Most disk we see retry themselves for about a
4 second delay before reporting a bad block. A CD taking twice
that much would not sound abnormal. (seeks are about 10 times
as expensive on CDs). 8 times 8 seconds is a full minute.
Roger.
--
** R.E.Wolff@BitWizard.nl ** http://www.BitWizard.nl/ ** +31-15-2600998 **
*-- BitWizard writes Linux device drivers for any device you may have! --*
**** "Linux is like a wigwam - no windows, no gates, apache inside!" ****
next prev parent reply other threads:[~2004-09-01 23:21 UTC|newest]
Thread overview: 31+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-08-30 16:39 Driver retries disk errors Rogier Wolff
2004-08-30 17:46 ` Theodore Ts'o
2004-08-30 18:26 ` James Courtier-Dutton
2004-08-30 22:25 ` Rogier Wolff
2004-08-31 11:38 ` Alan Cox
2004-09-02 16:23 ` Eric Mudama
2004-08-31 15:16 ` Bill Davidsen
2004-08-30 22:17 ` Rogier Wolff
2004-08-31 11:45 ` Alan Cox
2004-08-31 13:45 ` Andre Hedrick
2004-08-31 13:54 ` Rogier Wolff
2004-08-31 14:12 ` Alan Cox
2004-08-31 15:56 ` Erik Mouw
2004-08-31 15:13 ` Alan Cox
2004-08-31 17:00 ` Erik Mouw
2004-08-31 16:12 ` Alan Cox
2004-09-01 15:18 ` Bill Davidsen
2004-09-01 14:46 ` Alan Cox
2004-09-01 18:54 ` Bill Davidsen
2004-09-01 15:28 ` Romano Giannetti
2004-09-01 14:44 ` Alan Cox
2004-09-01 23:14 ` Rogier Wolff [this message]
2004-09-02 9:29 ` Alan Cox
2004-09-02 10:54 ` Rogier Wolff
2004-09-02 14:30 ` John Stoffel
2004-09-02 14:59 ` Alan Cox
2004-09-02 16:07 ` John Stoffel
2004-09-02 16:26 ` Eric Mudama
2004-08-31 22:55 ` Christer Weinigel
[not found] <fa.d48te6f.1ol6tbb@ifi.uio.no>
[not found] ` <fa.eti1vu1.2nqlj5@ifi.uio.no>
2004-08-31 0:17 ` Robert Hancock
2004-09-01 23:04 ` Rogier Wolff
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