From owner-freebsd-questions@FreeBSD.ORG Wed Dec 20 05:42:04 2006 Return-Path: X-Original-To: freebsd-questions@freebsd.org Delivered-To: freebsd-questions@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [69.147.83.52]) by hub.freebsd.org (Postfix) with ESMTP id 9E60916A412 for ; Wed, 20 Dec 2006 05:42:04 +0000 (UTC) (envelope-from dan@dan.emsphone.com) Received: from dan.emsphone.com (dan.emsphone.com [199.67.51.101]) by mx1.FreeBSD.org (Postfix) with ESMTP id 45F5C43CA0 for ; Wed, 20 Dec 2006 05:42:04 +0000 (GMT) (envelope-from dan@dan.emsphone.com) Received: (from dan@localhost) by dan.emsphone.com (8.13.6/8.13.8) id kBK5GjQ1069932; Tue, 19 Dec 2006 23:16:45 -0600 (CST) (envelope-from dan) Date: Tue, 19 Dec 2006 23:16:45 -0600 From: Dan Nelson To: Mark Kane Message-ID: <20061220051644.GB41207@dan.emsphone.com> References: <20061219221610.4bcdb4c4@localhost> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20061219221610.4bcdb4c4@localhost> X-OS: FreeBSD 6.2-PRERELEASE X-message-flag: Outlook Error User-Agent: Mutt/1.5.13 (2006-08-11) Cc: freebsd-questions@freebsd.org Subject: Re: SCSI Tape Drive Problems X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 20 Dec 2006 05:42:04 -0000 In the last episode (Dec 19), Mark Kane said: > Hi everyone. I'm experiencing some problems with two tape drives > attached to this machine. Here is the situation: > > I then tried backing up the same 17GB directory to a Sun DLT 4000 > single tape unit with a 20GB/40GB tape using cpio. It wrote about > 250MB and then quit with a "Found End of Volume" error. It outputted > a lot of errors to /var/log/messages which can be found here: > > http://tntpowerhost.com/mixx941/freebsd/sun_tape_errors_1.log Timeouts and unexpected busfree errors like these are indicative of cabling or termination problems. I don't think DLTs auto-terminate, for example, so try putting an external terminator on the 2nd plug on the back of the unit (or if it's an internal drive with one plug, terminate the cable the drive's plugged into). Once you get those errors sorted out, see whether you still get incorrect volume full messages. Completely unrelated, but it's interesting that the string "SCBs" in those logs got translated to "SCDel"! I've never seen Backspace->Delete conversion like that before :) -- Dan Nelson dnelson@allantgroup.com