From owner-freebsd-scsi@FreeBSD.ORG Thu Jan 29 05:50:26 2004 Return-Path: Delivered-To: freebsd-scsi@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id F360B16A4CE for ; Thu, 29 Jan 2004 05:50:25 -0800 (PST) Received: from main.gmane.org (main.gmane.org [80.91.224.249]) by mx1.FreeBSD.org (Postfix) with ESMTP id 029A643D31 for ; Thu, 29 Jan 2004 05:50:24 -0800 (PST) (envelope-from freebsd-scsi@m.gmane.org) Received: from list by main.gmane.org with local (Exim 3.35 #1 (Debian)) id 1AmCYo-0002r0-00 for ; Thu, 29 Jan 2004 14:50:22 +0100 Received: from makrothumia.wingnet.net ([206.30.215.5]) by news.gmane.org with esmtp (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Thu Jan 29 13:50:22 2004 X-Injected-Via-Gmane: http://gmane.org/ To: freebsd-scsi@freebsd.org From: Jesse Guardiani Date: Thu, 29 Jan 2004 08:50:17 -0500 Organization: WingNET Lines: 52 Message-ID: References: <200401240215.i0O2FY7E068846@gw.catspoiler.org> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7Bit X-Complaints-To: usenet@sea.gmane.org Gmane-NNTP-Posting-Host: makrothumia.wingnet.net User-Agent: KNode/0.7.2 X-Mail-Copies-To: never Sender: news Subject: Re: adaptec 2940u/uw dump card state ends X-BeenThere: freebsd-scsi@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list Reply-To: jesse@wingnet.net List-Id: SCSI subsystem List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 29 Jan 2004 13:50:26 -0000 Don Lewis wrote: [...] > My first guess would not be termination. I would think that a > termination problem would muck up data transfers and would affect all > attempts to use the changer. Well, it may be too soon to tell, but this past Monday (or maybe Sunday? I can't remember) the machine spontaneously rebooted on me during a backup cycle to the tape drive. It was midnight, but I decided to take a trip to the office and have a look at it anyway. In the adaptec SCSI controller, I had the termination set to OFF for the LOW and HIGH parts of the bus. I changed this to AUTO for LOW and AUTO for HIGH and I turned off Ultra SCSI capability on the controller. I'm not sure which of those changes fixed the problem, but so far - 3 or 4 days later - I haven't seen a single timeout and no spontaneous reboots. Hopefully it's fixed! > How long is the time from when you issue the changer command to when the > driver coughs up this error? I'm not familiar with this drive/changer > combination, but the DDS changer that I use takes a lot longer to swap > tapes if the tape currently in the drive is wound all the way to the > end, because the drive first has to rewind it before it can unload the > tape. Subsequent tape changes won't take as long if the tape currently > in the drive is still at the beginning ... > > How is the changer connected to the 2940u/uw? If you are using an eight > bit cable Not sure what "bit" count it has, but it's an external wide cable. 50 pin, maybe? > you'll want to configure the 2940u/uw to terminate the upper > 8 bits of the bus but not the lower 8. I think this may have been the problem. Setting both halves to "auto" probably fixed it. -- Jesse Guardiani, Systems Administrator WingNET Internet Services, P.O. Box 2605 // Cleveland, TN 37320-2605 423-559-LINK (v) 423-559-5145 (f) http://www.wingnet.net