From owner-freebsd-stable@FreeBSD.ORG Mon Aug 11 12:40:56 2014 Return-Path: Delivered-To: freebsd-stable@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [8.8.178.115]) (using TLSv1 with cipher ADH-AES256-SHA (256/256 bits)) (No client certificate requested) by hub.freebsd.org (Postfix) with ESMTPS id 7CF5B71A; Mon, 11 Aug 2014 12:40:56 +0000 (UTC) Received: from sinkng.sics.se (unknown [IPv6:2001:6b0:3a:1:c654:44ff:fe45:117c]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id EAA672145; Mon, 11 Aug 2014 12:40:55 +0000 (UTC) Received: from P142s.sics.se (P142s.sics.se [193.10.66.127]) by sinkng.sics.se (8.14.9/8.14.9) with ESMTP id s7BCdK0b019095 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=OK); Mon, 11 Aug 2014 14:39:20 +0200 (CEST) (envelope-from bengta@P142s.sics.se) Received: from P142s.sics.se (localhost [127.0.0.1]) by P142s.sics.se (8.14.9/8.14.9) with ESMTP id s7BCd0Xb002849; Mon, 11 Aug 2014 14:39:00 +0200 (CEST) (envelope-from bengta@P142s.sics.se) Received: (from bengta@localhost) by P142s.sics.se (8.14.9/8.14.9/Submit) id s7BCcxeT002848; Mon, 11 Aug 2014 14:38:59 +0200 (CEST) (envelope-from bengta@P142s.sics.se) From: Bengt Ahlgren To: Garrett Wollman Subject: Re: 9.3-RELEASE still instapanics on multi-mps(4) servers In-Reply-To: <21474.34330.572142.206098@hergotha.csail.mit.edu> (Garrett Wollman's message of "Wed, 6 Aug 2014 15:46:34 -0400") References: <21474.34330.572142.206098@hergotha.csail.mit.edu> User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/24.3 (berkeley-unix) Date: Mon, 11 Aug 2014 14:38:59 +0200 Message-ID: MIME-Version: 1.0 Content-Type: text/plain 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 12:40:56 -0000 Garrett Wollman writes: > 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. I have a dual-mps (one Dell H200 and one LSI 9207) system now running 9.1 (w patched sys/kern/kern_intr.c) that I intend to upgrade to 9.3 shortly. Is it enough to boot a 9.3 memstick to provoke the issue? Bengt