Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751216AbWBZRNV (ORCPT ); Sun, 26 Feb 2006 12:13:21 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751259AbWBZRNV (ORCPT ); Sun, 26 Feb 2006 12:13:21 -0500 Received: from zeniv.linux.org.uk ([195.92.253.2]:20438 "EHLO ZenIV.linux.org.uk") by vger.kernel.org with ESMTP id S1751019AbWBZRNU (ORCPT ); Sun, 26 Feb 2006 12:13:20 -0500 Date: Sun, 26 Feb 2006 17:13:07 +0000 From: "Dr. David Alan Gilbert" To: Mark Lord Cc: James Courtier-Dutton , David Greaves , Justin Piszcz , Jeff Garzik , linux-kernel@vger.kernel.org, IDE/ATA development list , albertcc@tw.ibm.com, axboe@suse.de, htejun@gmail.com Subject: Re: Kernel SeekCompleteErrors... Different from Re: LibPATA code issues / 2.6.15.4 Message-ID: <20060226171307.GA9682@gallifrey> References: <440040B4.8030808@dgreaves.com> <440083B4.3030307@rtr.ca> <4400A1BF.7020109@rtr.ca> <4400B439.8050202@dgreaves.com> <4401122A.3010908@rtr.ca> <44019E96.20804@superbug.co.uk> <4401B378.3030005@rtr.ca> <4401BB85.7070407@superbug.co.uk> <4401DF6B.9010409@rtr.ca> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <4401DF6B.9010409@rtr.ca> User-Agent: Mutt/1.4.1i X-Chocolate: 70 percent or better cocoa solids preferably X-Operating-System: Linux/2.6.11-1.14_FC3 (i686) X-Uptime: 17:05:43 up 177 days, 5:31, 70 users, load average: 0.23, 0.12, 0.02 Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2275 Lines: 55 * Mark Lord (liml@rtr.ca) wrote: > >>James Courtier-Dutton wrote: > >>> > >>>I have what looks like similar problems. The issue I have is that I > >> > >>Nope. Different issues. > >I have changed the Subject line to indicate this so any future responses > >can be indicated. > > > >> > >>>) #1 Sat Dec 3 18:47:19 GMT 2005 > >>>Dec 16 22:51:57 games kernel: hdc: dma_intr: status=0x51 { DriveReady > >>>SeekComplete Error } > >>>Dec 16 22:52:32 games kernel: hdc: dma_intr: error=0x40 { > >>>UncorrectableError }, LBAsect=53058185, sector=53057951 > >> > >>The disk really does have bad sectors in this case (above). > >The disk has NO bad sectors. It has been checked using two different tests. > > The *only* test that matters is to enable S.M.A.R.T., > and read out the error logs from it. I have seen a set of drives that has reported UncorrectableErrors and : * Shows the Uncorrectable error in the SMART log * Passes a full SMART test * Shows no remapped sectors * Passes the vendors drive test * Now fully passes a dd if=/dev/hdx of=/dev/null with no errors. They were a set of 250GB SATA drives by the same vendor; I've taken them out one at a time as each did the same thing and replaced them with another vendors drive. They were all in use in RAID-1 MD configuration (under heavy load). I do wonder about the 'uncorrectable error rate' that vendors report; it doesn't seem very large - but I'll admit to not understanding its units. Are soft non-repeatable uncorrectable errors expected in principal? (Pointers to a good explanation of what this actually means would be appreciated). I do wonder how often this happens to people and if the read succeeds again they just blame it on software. Dave -- -----Open up your eyes, open up your mind, open up your code ------- / Dr. David Alan Gilbert | Running GNU/Linux on Alpha,68K| Happy \ \ gro.gilbert @ treblig.org | MIPS,x86,ARM,SPARC,PPC & HPPA | In Hex / \ _________________________|_____ http://www.treblig.org |_______/ - 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/