From owner-freebsd-stable@FreeBSD.ORG Mon Jul 27 14:53:39 2009 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 D840710656AE for ; Mon, 27 Jul 2009 14:53:39 +0000 (UTC) (envelope-from bms@incunabulum.net) Received: from out1.smtp.messagingengine.com (out1.smtp.messagingengine.com [66.111.4.25]) by mx1.freebsd.org (Postfix) with ESMTP id A642F8FC19 for ; Mon, 27 Jul 2009 14:53:39 +0000 (UTC) (envelope-from bms@incunabulum.net) Received: from compute1.internal (compute1.internal [10.202.2.41]) by out1.messagingengine.com (Postfix) with ESMTP id 405953BD706; Mon, 27 Jul 2009 10:53:39 -0400 (EDT) Received: from heartbeat2.messagingengine.com ([10.202.2.161]) by compute1.internal (MEProxy); Mon, 27 Jul 2009 10:53:39 -0400 X-Sasl-enc: mEKCD5KzKGHJHPJIyLaq1M91zS1v9HUdsu4z0FWF0una 1248706418 Received: from [192.168.123.18] (82-35-112-254.cable.ubr07.dals.blueyonder.co.uk [82.35.112.254]) by mail.messagingengine.com (Postfix) with ESMTPSA id AD8B0CF13; Mon, 27 Jul 2009 10:53:38 -0400 (EDT) Message-ID: <4A6DBF6F.7050806@incunabulum.net> Date: Mon, 27 Jul 2009 15:53:35 +0100 From: Bruce Simpson User-Agent: Thunderbird 2.0.0.22 (Windows/20090605) MIME-Version: 1.0 To: Gavin Atkinson References: <200901232244.n0NMiRmM098646@lurza.secnetix.de> <46acbb3e-71bc-4cff-93d7-59b48a1a9302@exchange01.ecp.noc> <4A68B2A0.8050509@incunabulum.net> <1248424208.50198.2.camel@buffy.york.ac.uk> In-Reply-To: <1248424208.50198.2.camel@buffy.york.ac.uk> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Cc: freebsd-stable@FreeBSD.org Subject: Re: ataraid's revenge! (Was: Re: A nasty ataraid experience.) 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: Mon, 27 Jul 2009 14:53:40 -0000 Gavin Atkinson wrote: > On Thu, 2009-07-23 at 19:57 +0100, Bruce Simpson wrote: > >> 6 months on, ataraid(4) did it again. >> > > Which ataraid(4) controller is this? Seeing a verbose dmesg would help. > There are several patches in the PR database for ataraid problems, it > would be worth having a look. > Not much to report; it is a JMicron PCI-e card. I switched to the JMicron because it actually worked. The on-board controller is VIA and I don't use it; I've had problems managing the VIA based software RAID. Occasionally the mirror degrades, usually on boot, if something panics the machine. This leads to interesting inconsistencies and panics. All I was doing at the time was srm'ing a bunch of sensitive files, and running some CPU (not disk) intensive regression tests for Boost. I found it's difficult to recover from errors. See my post from 6 months ago about how 'atacontrol rebuild' often just plain fails. As per original post, the process(es) just wedged in getblk, and I had to take the system down to get some sense out of it as disk access ground to a halt.