From owner-freebsd-stable@FreeBSD.ORG Sun May 16 18:16:01 2010 Return-Path: Delivered-To: freebsd-stable@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id B1EE81065673 for ; Sun, 16 May 2010 18:16:01 +0000 (UTC) (envelope-from pieter@thedarkside.nl) Received: from mail.thelostparadise.com (router.thelostparadise.com [IPv6:2a02:898:0:30::30:1]) by mx1.freebsd.org (Postfix) with ESMTP id 547178FC13 for ; Sun, 16 May 2010 18:16:01 +0000 (UTC) Received: by mail.thelostparadise.com (Postfix, from userid 127) id D848973054; Sun, 16 May 2010 20:15:59 +0200 (CEST) Received: from localhost by mail.thelostparadise.com (Postfix) with ESMTP id A070273008; Sun, 16 May 2010 20:15:59 +0200 (CEST) Message-ID: <4BF0365D.7010207@thedarkside.nl> Date: Sun, 16 May 2010 20:15:57 +0200 From: Pieter de Boer MIME-Version: 1.0 To: Jeremy Chadwick References: <4BED8B89.6010901@os3.nl> <20100514195346.GA8977@icarus.home.lan> <4BEDBC08.2040002@os3.nl> <20100514224236.GA11680@icarus.home.lan> <4BEE476B.6020407@os3.nl> <20100515162624.GA39585@icarus.home.lan> <4BEF066F.3090703@os3.nl> <4BEF0F31.9050405@thedarkside.nl> <20100515233018.GA50125@icarus.home.lan> In-Reply-To: <20100515233018.GA50125@icarus.home.lan> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Cc: freebsd-stable@freebsd.org Subject: Re: Read / write timeouts on SATA disks connected to ICH9 X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 16 May 2010 18:16:01 -0000 Hi Jeremy, > Anyway, if heavy disk/controller load appears to be causing these > problems, you could have power-related issues. Possibly the combination > of two disks + heavy I/O causes enough power draw that the ICH9 starts > to behave oddly. Voltages which deviate too much can cause odd things > to happen to hardware. If you have the time/money, you might try > replacing the PSU in your system to see if there's any improvement; your > BIOS should be able to provide you Hardware Monitoring statistics > (voltages). Write these down before and after the PSU swap. You don't > need to go crazy and buy a 1000W PSU or anything, but 450-750W is pretty > normal these days. As this is a 19" 1U box, I'd need to buy a replacement PSU from Dell or a reseller. Not too expensive, but I'd like to avoid that. While looking through the CVSweb of RELENG_8, I found that ATA timeouts have been raised in 8 recently. On http://wiki.freebsd.org/JeremyChadwick/ATA_issues_and_troubleshooting and other URLs, like http://linux-bsd-sharing.blogspot.com/2009/03/howto-fix-sata-dma-timeout-issues-on.html, I found that increasing the timeout might help. So that's what I'll try next time it happens again. If that still doesn't work, I can take a better look at the voltage levels. -- Pieter