From owner-freebsd-questions@FreeBSD.ORG Wed Jan 28 22:47:20 2009 Return-Path: Delivered-To: freebsd-questions@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id E8499106564A for ; Wed, 28 Jan 2009 22:47:20 +0000 (UTC) (envelope-from wblock@wonkity.com) Received: from wonkity.com (wonkity.com [67.158.26.137]) by mx1.freebsd.org (Postfix) with ESMTP id 9F53C8FC14 for ; Wed, 28 Jan 2009 22:47:20 +0000 (UTC) (envelope-from wblock@wonkity.com) Received: from wonkity.com (localhost [127.0.0.1]) by wonkity.com (8.14.3/8.14.3) with ESMTP id n0SMlJ4p012644; Wed, 28 Jan 2009 15:47:19 -0700 (MST) (envelope-from wblock@wonkity.com) Received: from localhost (wblock@localhost) by wonkity.com (8.14.3/8.14.3/Submit) with ESMTP id n0SMlJdv012641; Wed, 28 Jan 2009 15:47:19 -0700 (MST) (envelope-from wblock@wonkity.com) Date: Wed, 28 Jan 2009 15:47:19 -0700 (MST) From: Warren Block To: Jaime In-Reply-To: Message-ID: References: <20090128202349.GD63837@dan.emsphone.com> <20090128225115.G25826@wojtek.tensor.gdynia.pl> User-Agent: Alpine 2.00 (BSF 1167 2008-08-23) MIME-Version: 1.0 Content-Type: TEXT/PLAIN; format=flowed; charset=US-ASCII X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.0.1 (wonkity.com [127.0.0.1]); Wed, 28 Jan 2009 15:47:19 -0700 (MST) Cc: Wojciech Puchar , freebsd-questions@freebsd.org Subject: Re: Quantum tape drive 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, 28 Jan 2009 22:47:21 -0000 On Wed, 28 Jan 2009, Jaime wrote: > On Wed, Jan 28, 2009 at 4:51 PM, Wojciech Puchar > wrote: >>> When reading from the tape using tar (bsdtar from FreeBSD 6.2 -- and, >>> yes, I'm preparing a cvsup as I write this :) ) the tape drive's Alarm >>> and Fault LEDs are lit up and then camcontrol devlist no longer shows >>> the tape drive. >> >> TERMINATION PROBLEM > > I was thinking of that... I shut down the server and checked the > usual suspects (terminator on the cable, SCSI IDs, etc.) but didn't > find anything out of place. Also, the same command in Knoppix (Linux) > using /dev/st0 (the Linux equivalent of /dev/sa0) appeared to write to > the tape and then list the items on that tape. I didn't see how long > it would take, though. In retrospect, maybe I should have let that > run longer. :( > > How certain are you that its a termination problem? It could just be a bad drive or tape, but termination was the first thing that came to mind for me also. The drive giving a fault on a read like that suggests it. Pardon the obvious, but remember that termination is needed at both ends of the SCSI bus, and only at the ends. There's also the issue of terminator power, which may have been supplied by the old drive but not by the new one. -Warren Block * Rapid City, South Dakota USA