From owner-freebsd-stable@FreeBSD.ORG Mon Aug 11 20:59:55 2014 Return-Path: Delivered-To: freebsd-stable@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) (using TLSv1 with cipher ADH-AES256-SHA (256/256 bits)) (No client certificate requested) by hub.freebsd.org (Postfix) with ESMTPS id B70356E3; Mon, 11 Aug 2014 20:59:55 +0000 (UTC) Received: from h2.funkthat.com (gate2.funkthat.com [208.87.223.18]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (Client CN "funkthat.com", Issuer "funkthat.com" (not verified)) by mx1.freebsd.org (Postfix) with ESMTPS id 780912410; Mon, 11 Aug 2014 20:59:55 +0000 (UTC) Received: from h2.funkthat.com (localhost [127.0.0.1]) by h2.funkthat.com (8.14.3/8.14.3) with ESMTP id s7BKxdDX037771 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO); Mon, 11 Aug 2014 13:59:40 -0700 (PDT) (envelope-from jmg@h2.funkthat.com) Received: (from jmg@localhost) by h2.funkthat.com (8.14.3/8.14.3/Submit) id s7BKxd5g037770; Mon, 11 Aug 2014 13:59:39 -0700 (PDT) (envelope-from jmg) Date: Mon, 11 Aug 2014 13:59:39 -0700 From: John-Mark Gurney To: Garrett Wollman Subject: Re: 9.3-RELEASE still instapanics on multi-mps(4) servers Message-ID: <20140811205939.GY83475@funkthat.com> Mail-Followup-To: Garrett Wollman , freebsd-stable@freebsd.org, freebsd-scsi@freebsd.org References: <21474.34330.572142.206098@hergotha.csail.mit.edu> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <21474.34330.572142.206098@hergotha.csail.mit.edu> User-Agent: Mutt/1.4.2.3i X-Operating-System: FreeBSD 7.2-RELEASE i386 X-PGP-Fingerprint: 54BA 873B 6515 3F10 9E88 9322 9CB1 8F74 6D3F A396 X-Files: The truth is out there X-URL: http://resnet.uoregon.edu/~gurney_j/ X-Resume: http://resnet.uoregon.edu/~gurney_j/resume.html X-TipJar: bitcoin:13Qmb6AeTgQecazTWph4XasEsP7nGRbAPE X-to-the-FBI-CIA-and-NSA: HI! HOW YA DOIN? can i haz chizburger? X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.2.2 (h2.funkthat.com [127.0.0.1]); Mon, 11 Aug 2014 13:59:40 -0700 (PDT) Cc: freebsd-scsi@freebsd.org, freebsd-stable@freebsd.org X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.18 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, 11 Aug 2014 20:59:55 -0000 Garrett Wollman wrote this message on Wed, Aug 06, 2014 at 15:46 -0400: > Remember about six months ago when I tested 9-stable on one of my big > NFS servers, and had it panic in the middle of the USB probe, but > ultimately bisected the problem to an update to the mps(4) driver? I > had to stop investigating and get the server working (which I did, by > installing 9.2 instead of something newer and presumably faster). I'm > at the point now where I'd like to upgrade my file servers to 9.3, and > I can't, because of this issue, so it's time to start tracking down > the bug again. > > I have two test servers now. 9.3 works just fine on one of them, and > panics on the other. The one it works on is slightly older, and has > an mpt(4) controller for the boot drives, as opposed to the system > where the panic happens, which is mps(4)-only. Both systems have two > SAS2116 controllers for external drives; the ones on the working > system have drives attached, and the ones on the non-working system > are not connected to anything (and in fact disabled in the BIOS for > now). > > Any experts want to suggest where to start (besides, obviously, > attaching a serial console, which I haven't done yet)? I saw one > change in the svn logs for 9.3 prior to the release which looked like > it might be a relevant fix, but it clearly hasn't improved anything > for my servers. One thing you could do is turn on DEBUG_MEMGUARD and DEBUG_REDZONE and see if they trigger... -- John-Mark Gurney Voice: +1 415 225 5579 "All that I will do, has been done, All that I have, has not."