From mboxrd@z Thu Jan 1 00:00:00 1970 From: Thomas Beutin Subject: Re: AIC7902 lockups on Intel SMP (Re: HD somtimes hanging) Date: Thu, 24 Jul 2003 21:38:47 +0200 Sender: linux-scsi-owner@vger.kernel.org Message-ID: <20030724213847.B31870@laokoon.bug.net> References: <20030724151233.E9280@laokoon.bug.net> <1059057411.6798.30.camel@carwash.duncangibb.com> <1382692704.1059068823@aslan.btc.adaptec.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Received: from hirsch.in-berlin.de ([192.109.42.6]:19934 "EHLO hirsch.in-berlin.de") by vger.kernel.org with ESMTP id S268019AbTGXTaB (ORCPT ); Thu, 24 Jul 2003 15:30:01 -0400 Received: from hirsch.in-berlin.de (localhost [127.0.0.1]) by hirsch.in-berlin.de (8.12.9/8.12.9/Debian-1) with ESMTP id h6OJj8OF011284 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NOT) for ; Thu, 24 Jul 2003 21:45:08 +0200 Received: (from uucp@localhost) by hirsch.in-berlin.de (8.12.9/8.12.9/Debian-1) with UUCP id h6OJj8st011275 for linux-scsi@vger.kernel.org; Thu, 24 Jul 2003 21:45:08 +0200 Received: (from tyrone@localhost) by laokoon.bug.net (8.9.3/8.9.3) id VAA00494 for linux-scsi@vger.kernel.org; Thu, 24 Jul 2003 21:38:47 +0200 Content-Disposition: inline In-Reply-To: <1382692704.1059068823@aslan.btc.adaptec.com>; from gibbs@scsiguy.com on Thu, Jul 24, 2003 at 11:47:04AM -0600 List-Id: linux-scsi@vger.kernel.org To: linux-scsi@vger.kernel.org On Thu, Jul 24, 2003 at 11:47:04AM -0600, Justin T. Gibbs wrote: > It looks like you have a very flakey bus. The BSY line is probably > glitching. In the trace you provided, we successfully selected the > device at ID 3 and are waiting for the target to take us to the first > phase. The REQ for that phase never occurs and in fact the BSY line > is not always driven. Very, very weird. The target controls both > the REQ and BSY lines, so this is either a problem with the target, > your cabling, or your termination. I will give my system a try next time when i have access to the machine. Although i cannot believe that: all disks are mounted in a plug-in for the backplane (SCA HSBP M15), and the first disk works fine all the times. Maybe i change the drives in the plug-ins and the position of the drives (but i cannot use all positions because i have to place the IBM disk at the first position). -tb -- Thomas Beutin tb@laokoon.IN-Berlin.DE Beam me up, Scotty. There is no intelligent live down in Redmond.