From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756412AbYGEXZK (ORCPT ); Sat, 5 Jul 2008 19:25:10 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1753639AbYGEXYy (ORCPT ); Sat, 5 Jul 2008 19:24:54 -0400 Received: from lucidpixels.com ([75.144.35.66]:47579 "EHLO lucidpixels.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752614AbYGEXYx (ORCPT ); Sat, 5 Jul 2008 19:24:53 -0400 Date: Sat, 5 Jul 2008 19:24:52 -0400 (EDT) From: Justin Piszcz To: Robert Hancock cc: linux-kernel@vger.kernel.org, linux-raid@vger.kernel.org, linux-ide@vger.kernel.org, xfs@oss.sgi.com, Alan Piszcz Subject: Re: Lots of con-current I/O = resets SATA link? (2.6.25.10) In-Reply-To: <48700228.7060904@shaw.ca> Message-ID: References: <486FBFAB.5050303@shaw.ca> <48700228.7060904@shaw.ca> User-Agent: Alpine 1.10 (DEB 962 2008-03-14) MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII; format=flowed Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Sat, 5 Jul 2008, Robert Hancock wrote: > Justin Piszcz wrote: >>> Can you post your dmesg from bootup with the controller/drive detection? > > So you've got 6 drives in the machine. Intel chipsets normally seem pretty > robust with AHCI. > > Are you certain that your machine has enough power to run all those drives > properly? We've seen in a number of cases that power fluctuations or noise > can cause these kinds of errors. I have a 650watt PSU (nice antec one) and the power draw of the box is ~148watts w/ veliciraptors, ~250 when fully load all 4 cores + all 12 disks writing. I have turned off the irqbalance daemon and I am going to see if the problem re-occurs. Justin.