Date: Mon, 21 Apr 1997 16:40:20 +0100 From: Alan Judge <Alan.Judge@indigo.ie> To: "Justin T. Gibbs" <gibbs@plutotech.com> Cc: freebsd-scsi@freebsd.org, Alan.Judge@indigo.ie Subject: Re: Vendor specific ASCQ SCSI errors in 2.2-STABLE Message-ID: <199704211540.QAA03447@indigo.ie> In-Reply-To: Message from "Justin T. Gibbs" dated today at 09:19.
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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
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