From owner-freebsd-scsi@FreeBSD.ORG Wed Jul 7 04:13:36 2004 Return-Path: Delivered-To: freebsd-scsi@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 8212E16A4CE for ; Wed, 7 Jul 2004 04:13:36 +0000 (GMT) Received: from pooker.samsco.org (pooker.samsco.org [168.103.85.57]) by mx1.FreeBSD.org (Postfix) with ESMTP id DEEA943D31 for ; Wed, 7 Jul 2004 04:13:33 +0000 (GMT) (envelope-from scottl@samsco.org) Received: from samsco.org (CPE000625df7014-CM00803785bf66.cpe.net.cable.rogers.com [69.193.111.74]) (authenticated bits=0) by pooker.samsco.org (8.12.11/8.12.10) with ESMTP id i674IFS5099857; Tue, 6 Jul 2004 22:18:16 -0600 (MDT) (envelope-from scottl@samsco.org) Message-ID: <40EB7851.8030506@samsco.org> Date: Tue, 06 Jul 2004 22:13:05 -0600 From: Scott Long User-Agent: Mozilla/5.0 (X11; U; FreeBSD i386; en-US; rv:1.6) Gecko/20040304 X-Accept-Language: en-us, en MIME-Version: 1.0 To: "Michael L. Squires" References: <20040706211319.X4978@familysquires.net> In-Reply-To: <20040706211319.X4978@familysquires.net> Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit X-Spam-Status: No, hits=0.0 required=3.8 tests=none autolearn=no version=2.63 X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on pooker.samsco.org cc: freebsd-scsi@freebsd.org Subject: Re: Two SCSI controllers with 4.10-STABLE? X-BeenThere: freebsd-scsi@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: SCSI subsystem List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 07 Jul 2004 04:13:36 -0000 Michael L. Squires wrote: > This question relates to 4.10-STABLE. > > I had to reuse the motherboard in my home server, a SM P6DGH with > onboard dual-channel SCSI, with an older P6DLH which does not have > onboard SCSI. The P6DGH had 5 SCSI drives on channel A, and 4 on channel > B. I installed two LSI/Symbios 875 SCSI controllers on the P6DLH. > There were no problems as long as all 9 drives were on one controller, > but if I tried to spread the drives across two controllers the system > would boot but fail to mount the root partition, complaining that it > couldn't be found. I replaced the two 875's with two 2940UW's - same > problem. There were no problems > detectable using the onboard diagnostics, all 9 drives were recognized > in the right places, as were the controllers. > > I know I had a P6DLH with two 2944UW's and one 2940UW, with HVD SCSI > disks on both 2944UW's, so I know it's possible - my memory is that this > was 3-STABLE. > > I know I must be missing something simple, but I don't know what it is. > The disks aren't very fast, and the load is light, so using only one > controller is not a real problem - but with 8 empty PCI slots and spare > controllers it just bothers me. > > Mike Squires Are you sure that the drives are being discovered in the correct order? You might need to re-arrange the drives on each bus or 'wire' down the order in the kernel config file. See /sys/i386/conf/LINT for details on how to do this. Scott