From owner-freebsd-scsi@FreeBSD.ORG Mon Aug 4 12:25:56 2003 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 B54E637B401; Mon, 4 Aug 2003 12:25:56 -0700 (PDT) Received: from magic.adaptec.com (magic-mail.adaptec.com [208.236.45.100]) by mx1.FreeBSD.org (Postfix) with ESMTP id 2566A43FAF; Mon, 4 Aug 2003 12:25:56 -0700 (PDT) (envelope-from gibbs@scsiguy.com) Received: from redfish.adaptec.com (redfish.adaptec.com [162.62.50.11]) by magic.adaptec.com (8.11.6/8.11.6) with ESMTP id h74JPto03697; Mon, 4 Aug 2003 12:25:55 -0700 Received: from [10.100.253.70] (aslan.btc.adaptec.com [10.100.253.70]) by redfish.adaptec.com (8.8.8p2+Sun/8.8.8) with ESMTP id MAA06773; Mon, 4 Aug 2003 12:25:55 -0700 (PDT) Date: Mon, 04 Aug 2003 13:27:39 -0600 From: "Justin T. Gibbs" To: Don Bowman , "'freebsd-scsi@freebsd.org'" , "'aic7xxx@freebsd.org'" Message-ID: <1346570000.1060025259@aslan.btc.adaptec.com> In-Reply-To: References: X-Mailer: Mulberry/3.1.0b5 (Linux/x86) MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Content-Disposition: inline Subject: Re: AIC7902 SCSI aborted command X-BeenThere: freebsd-scsi@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list Reply-To: "Justin T. Gibbs" List-Id: SCSI subsystem List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 04 Aug 2003 19:25:57 -0000 > After ~200 hours of operation a PC spit out this message: > > Copied 18 bytes of sense data offset 12: 0xf0 0x0 0xb 0x0 0x0 0x40 0xff 0xa > 0x0 0x0 0x0 0x0 0x47 0x3 0x8 0x0 0x0 0x0 > (da0:ahd0:0:0:0): WRITE(06). CDB: a 0 40 ff 80 0 > (da0:ahd0:0:0:0): ABORTED COMMAND info:40ff asc:47,3 > (da0:ahd0:0:0:0): Reserved ASC/ASCQ pair field replaceable unit: 8 > > The system has a single U320 15KRPM seagate 18GB drive in it. > No other messages are present. This means that the target saw a CRC miscompare on a packet. CAM retried the command and it succeeded. CRC errors are not unheard of in U320 configurations, but at only 200 hours of load, that is a little too often for comfort. I believe you mentioned before that you were using an extremely short cable in one of your configurations. Be aware that there is a minimum cable length suggested by the SCSI spec. This varies depending on the capacitance rating of your cable, but the shortest length allowed is 10cm (cables with less capacitance need larger spacing). If your cable is shorter than this, you might consider trying something longer. -- Justin