Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S268073AbUIAXV6 (ORCPT ); Wed, 1 Sep 2004 19:21:58 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S268185AbUIAXVH (ORCPT ); Wed, 1 Sep 2004 19:21:07 -0400 Received: from users.linvision.com ([62.58.92.114]:13022 "HELO bitwizard.nl") by vger.kernel.org with SMTP id S267635AbUIAXOf (ORCPT ); Wed, 1 Sep 2004 19:14:35 -0400 Date: Thu, 2 Sep 2004 01:14:34 +0200 From: Rogier Wolff To: Alan Cox Cc: Romano Giannetti , Linux Kernel Mailing List Subject: Re: Driver retries disk errors. Message-ID: <20040901231434.GD28809@bitwizard.nl> References: <20040830163931.GA4295@bitwizard.nl> <1093952715.32684.12.camel@localhost.localdomain> <20040831135403.GB2854@bitwizard.nl> <1093961570.597.2.camel@localhost.localdomain> <20040831155653.GD17261@harddisk-recovery.com> <1093965233.599.8.camel@localhost.localdomain> <20040831170016.GF17261@harddisk-recovery.com> <1093968767.597.14.camel@localhost.localdomain> <20040901152817.GA4375@pern.dea.icai.upco.es> <1094049877.2787.1.camel@localhost.localdomain> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1094049877.2787.1.camel@localhost.localdomain> User-Agent: Mutt/1.3.28i Organization: BitWizard.nl Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1197 Lines: 25 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!" **** - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/