Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751739AbWJFDRX (ORCPT ); Thu, 5 Oct 2006 23:17:23 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751744AbWJFDRX (ORCPT ); Thu, 5 Oct 2006 23:17:23 -0400 Received: from mail.tmr.com ([64.65.253.246]:54763 "EHLO roadwarrior3.tmr.com") by vger.kernel.org with ESMTP id S1751739AbWJFDRX (ORCPT ); Thu, 5 Oct 2006 23:17:23 -0400 Message-ID: <45231A63.3020102@tmr.com> Date: Tue, 03 Oct 2006 22:20:19 -0400 From: Bill Davidsen User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.8.0.6) Gecko/20060730 SeaMonkey/1.0.4 MIME-Version: 1.0 To: Matt Domsch CC: linux-kernel@vger.kernel.org Subject: Re: dell poweredge 2400 harddisks going into offline mode when heavy I/O occurs References: <20060928141923.GH9348@vanheusden.com> <20060928151257.GA18268@lists.us.dell.com> In-Reply-To: <20060928151257.GA18268@lists.us.dell.com> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1566 Lines: 41 Matt Domsch wrote: > 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. Can you configure the controller as JBOD and use software raid. Would the controller keep up with that? > > Thanks, > Matt > - 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/