From mboxrd@z Thu Jan 1 00:00:00 1970 From: Tejun Heo Subject: Re: a disk timeout and a disk state Date: Sat, 08 Sep 2007 17:00:22 +0900 Message-ID: <46E25696.4000504@gmail.com> References: <5d96567b0709040009o2b1580fel4bcd91e629b5bef3@mail.gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Return-path: Received: from rv-out-0910.google.com ([209.85.198.191]:38149 "EHLO rv-out-0910.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753802AbXIHRH6 (ORCPT ); Sat, 8 Sep 2007 13:07:58 -0400 Received: by rv-out-0910.google.com with SMTP id k20so690083rvb for ; Sat, 08 Sep 2007 10:07:58 -0700 (PDT) In-Reply-To: <5d96567b0709040009o2b1580fel4bcd91e629b5bef3@mail.gmail.com> Sender: linux-ide-owner@vger.kernel.org List-Id: linux-ide@vger.kernel.org To: Raz Cc: Jeff Garzik , "linux-ide@vger.kernel.org" Raz wrote: > Jeff Hello > > We have in our machines several sata (mostly maxtor-segate) disks in an array. > These disks generate too many ata-io errors at clients sites. > From raid1 code I have learned that a re-write sometimes fixes a disk. > > Question: Why ? > Question: Does it always work ? > Question: Does rewriting a slow sector also reduces a disk error rate, > does it make any sense ? You need to post much more information to get anyone on the list interested. * lspci -nn * boot log (/var/log/boot.msg on some distros or the result of dmesg after boot) * kernel error messages (dmesg after errors) -- tejun