Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751916AbWI1PM4 (ORCPT ); Thu, 28 Sep 2006 11:12:56 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751919AbWI1PM4 (ORCPT ); Thu, 28 Sep 2006 11:12:56 -0400 Received: from ausc60pc101.us.dell.com ([143.166.85.206]:44619 "EHLO ausc60pc101.us.dell.com") by vger.kernel.org with ESMTP id S1751918AbWI1PMz (ORCPT ); Thu, 28 Sep 2006 11:12:55 -0400 DomainKey-Signature: s=smtpout; d=dell.com; c=nofws; q=dns; b=zFXwCjhwyKUl5XOMqCG4WUfH0ej6SxYm7PU2KU2zDXLL1GeQHXIzox478vy1PR4uljS9DyTqZwm3XW8VWUS2fTkeSZI3hG3Id8rADoT6z/aw6MCtek0I/ZvT8w00vPV/; X-IronPort-AV: i="4.09,231,1157346000"; d="scan'208"; a="87935474:sNHT17346762" Date: Thu, 28 Sep 2006 10:12:57 -0500 From: Matt Domsch To: Folkert van Heusden Cc: linux-kernel@vger.kernel.org Subject: Re: dell poweredge 2400 harddisks going into offline mode when heavy I/O occurs Message-ID: <20060928151257.GA18268@lists.us.dell.com> References: <20060928141923.GH9348@vanheusden.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20060928141923.GH9348@vanheusden.com> User-Agent: Mutt/1.5.11 Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1539 Lines: 40 On Thu, Sep 28, 2006 at 04:19:23PM +0200, Folkert van Heusden wrote: > Hi, > > I have a Dell Poweredge 2400 with 6 scsi harddisks in (hw-) raid 5. > 512MB ram, 2x P3. > When heavy disk i/o occurs, the system puts the harddisks into offline > mode causing the filesystems to be put in readonly. The current kernel > is 2.6.8, with 2.4.27 this did not occure. Googling did not help. The > disks all have green lights (there's a special led for each to indicate > errors - that one is off). [snip] > Sep 28 16:05:12 kasparov kernel: aacraid: Host adapter reset request. SCSI hang ? > Sep 28 16:06:12 kasparov kernel: aacraid: SCSI bus appears hung > Sep 28 16:06:12 kasparov kernel: scsi: Device offlined - not ready after error recovery: host 1 channel 0 id 0 lun 0 Yes, this is familiar. See: http://lists.us.dell.com/pipermail/linux-poweredge/2004-May/014694.html In addition, please consider mounting your file systems with 'noatime', as this reduces the number of small writes being sent to the disks. 2.6.x kernels have the ability to swamp the RAID controller firmware with requests where 2.4.x kernels couldn't so easily. Thanks, Matt -- Matt Domsch Software Architect Dell Linux Solutions linux.dell.com & www.dell.com/linux Linux on Dell mailing lists @ http://lists.us.dell.com - 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/