Date: Fri, 5 Feb 1999 21:05:11 -0700 (MST) From: "Kenneth D. Merry" <ken@plutotech.com> To: scrappy@hub.org (The Hermit Hacker) Cc: freebsd-scsi@FreeBSD.ORG, freebsd-stable@FreeBSD.ORG Subject: Re: CAM problem with 3.0S? Message-ID: <199902060405.VAA52675@panzer.plutotech.com> In-Reply-To: <Pine.BSF.4.05.9902050224520.344-300000@thelab.hub.org> from The Hermit Hacker at "Feb 5, 1999 2:42:52 am"
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The Hermit Hacker wrote... > > Further to my last, slightly more details to work from... > > Attached is from /var/log/messages, basically what gets spewed out when I > type 'tosha -iq'...and dmesg.boot > > A few extra details that I just clued into. One thing has changed > recently, I added a 4 gig, UW drive to the system. > > My controller is an Adaptec 2940 UW...with the two internal buses (one > 68pin, one 50pin?) ... I have both in use...my root drive, and the CD I'm > trying to read from, is on the 50pin..my new 4gig is on the 68pin. I can > access both the root (obviously) and the 4gig drive, just tosha fails on > the CD... > > %tosha -iq > error sending SCSI command: Input/output error > > the kernel is "fresh" as of about 30minute ago or so, figured I should > bring the 3.0S machine up to date before adding more data...makes no > difference... > > Trying to follow things through a little further, I just shut down and > removed the second bus (68pin)...now the CD works again. So, with both > bus's in operation, I can access both hard drives (1 on the 68pin bus, one > on the 50pin bus), but I can't touch the CD on the 50pin bus...if I remove > the 68pin bus/cable, the CD works again... > > Anything else that I should be trying? You almost certainly have a cabling or termination problem. The parity errors are a very good indication of that. You should probably have the termination set to 'automatic', or high on, low off, and of course make sure that both ends of the bus are terminated. If that doesn't work, I would try replacing the cables, checking for bent pins on various connectors, etc. Also, you might try moving the cables away from the power supply. Ken -- Kenneth Merry ken@plutotech.com To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-stable" in the body of the message
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