From mboxrd@z Thu Jan 1 00:00:00 1970 From: Allan Wind Subject: Re: MD/RAID time out writing superblock Date: Mon, 7 Sep 2009 12:55:04 -0400 Message-ID: <20090907165504.GJ31003@lifeintegrity.com> References: <4A950FA6.4020408@redhat.com> <92cb16daad8278b0aa98125b9e1d057a@localhost> <4A95573A.6090404@redhat.com> <1571f45804875514762f60c0097171e6@localhost> <4A970154.2020507@redhat.com> <4A9B8583.9050601@kernel.org> <4A9BBC4A.6070708@redhat.com> <4A9BC023.10903@kernel.org> <20090907114442.GG18831@arachsys.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Received: from static-173-48-39-13.bstnma.fios.verizon.net ([173.48.39.13]:48589 "EHLO lifeintegrity.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752164AbZIGQzD (ORCPT ); Mon, 7 Sep 2009 12:55:03 -0400 Content-Disposition: inline In-Reply-To: <20090907114442.GG18831@arachsys.com> Sender: linux-ide-owner@vger.kernel.org List-Id: linux-ide@vger.kernel.org To: Chris Webb Cc: linux-scsi@vger.kernel.org, Tejun Heo , Ric Wheeler , Andrei Tanas , NeilBrown , linux-kernel@vger.kernel.org, IDE/ATA development list , Jeff Garzik , Mark Lord On 2009-09-07T12:44:42, Chris Webb wrote: > Sorry for the late follow up to this thread, but I'm also seeing symptoms that > look identical to these and would be grateful for any advice. I think I can > reasonably rule out a single faulty drive, controller or cabling set as I'm > seeing it across a cluster of Supermicro machines with six Seagate ST3750523AS > SATA drives in each and the drive that times out is apparently randomly > distributed across the cluster. (Of course, since the hardware is identical, it > could still be a hardware design or firmware problem.) Seeing the same thing with a Supermicro motherboard and a pair WDC 2 TB drives. Disabling NCQ does not resolve the issue, nor increasing the safe_mode_delay. This is with 2.6.30.4. This machine is sitting on its hand (i.e. no significant load). /Allan -- Allan Wind Life Integrity, LLC