From mboxrd@z Thu Jan 1 00:00:00 1970 From: Andrei Tanas Subject: Re: MD/RAID time out writing superblock Date: Fri, 04 Sep 2009 15:39:07 -0400 Message-ID: References: <4A950FA6.4020408@redhat.com> <92cb16daad8278b0aa98125b9e1d057a@localhost> <4A95573A.6090404@redhat.com> <1571f45804875514762f60c0097171e6@localhost> <4A970154.2020507@redhat.com> <4A9B8583.9050601@kernel.org> <4A9BC033.9000909@pobox.com> <4A9C60A1.50303@rtr.ca> <640f6103c45b6cba6f84f887bde227e4@localhost> <20090902215841.GA12441@lifeintegrity.com> Mime-Version: 1.0 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 8bit Return-path: Received: from tanas.ca ([206.248.136.31]:40186 "EHLO tanas.ca" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757248AbZIDTjH (ORCPT ); Fri, 4 Sep 2009 15:39:07 -0400 In-Reply-To: <20090902215841.GA12441@lifeintegrity.com> Sender: linux-ide-owner@vger.kernel.org List-Id: linux-ide@vger.kernel.org To: Allan Wind Cc: IDE/ATA development list , linux-scsi@vger.kernel.org On Wed, 2 Sep 2009 17:58:41 -0400, Allan Wind wrote: > On 2009-09-01T09:07:11, Andrei Tanas wrote: >> Mine errored out again with exactly the same symptoms, this time after >> only >> few days and with the "tunable" set to 2 sec. I got a warranty >> replacement >> but haven't shipped this one yet. Let me know if you want it. > > How do you set it to 2 sec? I have a raid 1 array of two new WDC > 2 TB drives that fail on the 2nd drive all the time. Disabling > NCQ might have helped but it is hard to tell. It was stable for > a week, but probably failed 10 times over the weekend. I either > need to add a 3rd drive to get any protection from hardware > failure, or use lvm to mirror the two drives instead of md :-( echo 2.0 > /sys/block/md0/md/safe_mode_delay