From owner-freebsd-scsi Mon Apr 21 08:40:48 1997 Return-Path: Received: (from root@localhost) by freefall.freebsd.org (8.8.5/8.8.5) id IAA23914 for freebsd-scsi-outgoing; Mon, 21 Apr 1997 08:40:48 -0700 (PDT) Received: from indigo.ie (aoife.indigo.ie [194.125.133.9]) by freefall.freebsd.org (8.8.5/8.8.5) with ESMTP id IAA23901 for ; Mon, 21 Apr 1997 08:40:43 -0700 (PDT) Received: from indigo.ie (localhost [127.0.0.1]) by indigo.ie (8.8.5/8.8.5/INDIGO-HUB) with ESMTP id QAA03447; Mon, 21 Apr 1997 16:40:20 +0100 (BST) Message-Id: <199704211540.QAA03447@indigo.ie> To: "Justin T. Gibbs" Cc: freebsd-scsi@freebsd.org, Alan.Judge@indigo.ie Subject: Re: Vendor specific ASCQ SCSI errors in 2.2-STABLE In-reply-to: Message from "Justin T. Gibbs" dated today at 09:19. From: Alan Judge Date: Mon, 21 Apr 1997 16:40:20 +0100 Sender: owner-freebsd-scsi@freebsd.org X-Loop: FreeBSD.org Precedence: bulk Justin> DDMA overrun or REQ/ACK overrun/underrun error. Justin> BUT, the manual says that it will return HARDWARE ERROR not Justin> ABORTED COMMAND in this case. I'll have to go look at how we Justin> print out the information to make sure this is correct. OK, thanks. I was just looking at the 41,00 entry under ABORTED COMMAND as the nearest match. Maybe things aren't getting printed correctly. If not, maybe I should try to get an explanation of the code from Quantum. Justin> If this is indeed the case, I would suspect a cabling or Justin> termination problem that rears it's ugly head only under heavy Justin> load. The setup is fairly simple. Eight disks, all internal. Four each on channels of a 3940UW. A single ribbon cable connects each set, and termination is enabled on the last drive in each chain. The only unusual feature is that all the disks are in hot-swap cannisters, so there's some internal cabling there. At the moment, I only get the error on sd0 and even there it only happens once a day or so. Any ideas on where to start narrowing down the problem. >> I have a bunch of identical disks in a 2.2-GAMMA machine and have never seen >> a similar error. Justin> The 2.2-GAMMA driver can't generate the same kinds of load as Justin> the current driver. OK. I was wondering whether the problem I'm having might be related to the other ahc problems. -- Alan