From owner-freebsd-scsi Wed Oct 25 7:19:29 2000 Delivered-To: freebsd-scsi@freebsd.org Received: from nbrmr1003.tp.ac.com (nbrmr1003.tp.ac.com [204.167.146.35]) by hub.freebsd.org (Postfix) with ESMTP id 9181C37B4C5 for ; Wed, 25 Oct 2000 07:19:27 -0700 (PDT) Received: from cifnet.com (naalab76116.tp.ac.com [10.10.76.116]) by nbrmr1003.tp.ac.com (Pro-8.9.3/Pro-8.9.3) with ESMTP id JAA17347 for ; Wed, 25 Oct 2000 09:14:35 -0500 (CDT) Message-ID: <39F6EB88.646614AB@cifnet.com> Date: Wed, 25 Oct 2000 09:17:44 -0500 From: scottmm X-Mailer: Mozilla 4.75 [en] (Windows NT 5.0; U) X-Accept-Language: en,pdf MIME-Version: 1.0 To: FREEBSD-SCSI@FREEBSD.ORG Subject: ahc0: ahc_intr - referenced scb ... Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Sender: owner-freebsd-scsi@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.org Hello All I have been using FBSD 3.4 for the last few months, and have recently run into a backup problem that I cannot figure out. I am using v 3.4 with a newly rebuilt kernel. My MB is a Tiger-133 with x2 p3 500's. The SCSI controller is an Adaptec 2940U/UW. The devices I have on this SCSI device are: SCSI ID 3: HP 12/24GB SCSI ID 4: Plextor 12/2/20 CDRW The command I am using is "tar cvf /dev/nrsa0 /mediia." This is the problem I am having. The tape starts up and after about 5-7 min I recive the error: "ahc0: ahc_intr - referenced scb not valid during SELTO scb(0, 0)" in my newbieness and with an MS background. I have done the following. I first wanted to see if the card was bad, and replaced it with an older 2940U. FBSD generated the same error. Then I thought it might be the Tape unit. I tried a different tape backup (DLT4000) on an external SCSI cable, with a physical terminator. I used the same command ("tar cvf /dev/nrsa0 /mediia."), but after a minute the error came back. The SCSI Card is set to self terminate. Transfer rate has been set from 20 - 40 MB from the type of information I have gathered from the man pages on ahc. I semi-know what the SCB does, but I don't know how to adjust them. Somewhere I read that the scb 16/255 is set. Again I don't know where. I don't know if I should attempt to replace the CAM device driver (again my MS background taking hold) Could anyone point me to some information on how I can resolve this. "No matter how noble the cause or how valiant the knight, Some days, the dragon wins." I don't know who wrote this, but this dragon is definetly kicking my ass. If you read this far, thank you for your time Scott To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-scsi" in the body of the message