From owner-freebsd-scsi@FreeBSD.ORG Tue Feb 10 06:19:27 2009 Return-Path: Delivered-To: freebsd-scsi@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 09011106566B for ; Tue, 10 Feb 2009 06:19:27 +0000 (UTC) (envelope-from scottl@samsco.org) Received: from pooker.samsco.org (pooker.samsco.org [168.103.85.57]) by mx1.freebsd.org (Postfix) with ESMTP id B16428FC0A for ; Tue, 10 Feb 2009 06:19:26 +0000 (UTC) (envelope-from scottl@samsco.org) Received: from phobos.local ([192.168.254.200]) (authenticated bits=0) by pooker.samsco.org (8.14.2/8.14.2) with ESMTP id n1A6JK9L051052; Mon, 9 Feb 2009 23:19:20 -0700 (MST) (envelope-from scottl@samsco.org) Message-ID: <49911C68.6030203@samsco.org> Date: Mon, 09 Feb 2009 23:19:20 -0700 From: Scott Long User-Agent: Mozilla/5.0 (Macintosh; U; Intel Mac OS X; en-US; rv:1.8.1.13) Gecko/20080313 SeaMonkey/1.1.9 MIME-Version: 1.0 To: Charles Sprickman References: In-Reply-To: X-Enigmail-Version: 0.95.6 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit X-Spam-Status: No, score=-4.4 required=3.8 tests=ALL_TRUSTED,BAYES_00 autolearn=ham version=3.1.8 X-Spam-Checker-Version: SpamAssassin 3.1.8 (2007-02-13) on pooker.samsco.org Cc: freebsd-scsi@freebsd.org Subject: Re: 7.1 Panic on degraded disk w/mpt X-BeenThere: freebsd-scsi@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: SCSI subsystem List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 10 Feb 2009 06:19:27 -0000 Charles Sprickman wrote: > (posted on -stable already, no takers - added info: full dmesg, crash > info from panic when array finished rebuilding, some comments on dmesg) > > Howdy, > > I dug around and can't find a PR on this, and the only other report I > saw was in this mailing list post that has no replies: > > http://www.nabble.com/7.1-BETA2-panic-on-mpt-degrade-td20183173.html > > The hardware is a Dell PowerEdge 860 with the Dell/LSI SAS5 controller: > > mpt0: port 0xec00-0xecff mem > 0xfe9fc000-0xfe9fffff,0xfe9e0000-0xfe9effff irq 16 at device 8.0 on pci2 > mpt0: MPI Version=1.5.13.0 > > The panic is repeatable by forcing the array into a degraded state. > When the array finishes rebuilding, the box also panics. > > Here's my best shot at getting info out of kgdb (panic on array going to > degraded state): I wonder if the MPT card is temporarily detaching and then reattaching the logical drive when the rebuild completes. The info you posted is inconclusive here. CAM (the FreeBSD SCSI layer) has had some problems handling device detaches, but we've been very fortunate to have someone examining and fixing this recently. Would it be possible for you to upgrade to the most recent 8-CURRENT tree, and re-run your test? If not, I'll see about generating a patchset against 7.1. Scott