From owner-freebsd-current@FreeBSD.ORG Fri Jan 23 12:15:39 2004 Return-Path: Delivered-To: freebsd-current@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 4F2F016A4CE for ; Fri, 23 Jan 2004 12:15:39 -0800 (PST) Received: from smtp-out1.xs4all.nl (smtp-out1.xs4all.nl [194.109.24.11]) by mx1.FreeBSD.org (Postfix) with ESMTP id 3B65743D39 for ; Fri, 23 Jan 2004 12:15:37 -0800 (PST) (envelope-from wkb@freebie.xs4all.nl) Received: from freebie.xs4all.nl (freebie.xs4all.nl [213.84.32.253]) by smtp-out1.xs4all.nl (8.12.10/8.12.10) with ESMTP id i0NKFZNV019445; Fri, 23 Jan 2004 21:15:35 +0100 (CET) Received: from freebie.xs4all.nl (localhost [127.0.0.1]) by freebie.xs4all.nl (8.12.10/8.12.9) with ESMTP id i0NKFZvE065415; Fri, 23 Jan 2004 21:15:35 +0100 (CET) (envelope-from wkb@freebie.xs4all.nl) Received: (from wkb@localhost) by freebie.xs4all.nl (8.12.10/8.12.9/Submit) id i0NKFZ9d065414; Fri, 23 Jan 2004 21:15:35 +0100 (CET) (envelope-from wkb) Date: Fri, 23 Jan 2004 21:15:35 +0100 From: Wilko Bulte To: Doug White Message-ID: <20040123201535.GA65389@freebie.xs4all.nl> References: <400EC37A.6000505@supsi.ch> <20040123120622.C61090@carver.gumbysoft.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20040123120622.C61090@carver.gumbysoft.com> User-Agent: Mutt/1.4.1i X-OS: FreeBSD 4.9-STABLE X-PGP: finger wilko@freebsd.org cc: freebsd-current@freebsd.org cc: Roberto Nunnari Subject: Re: problem with scsi device X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 23 Jan 2004 20:15:39 -0000 On Fri, Jan 23, 2004 at 12:07:36PM -0800, Doug White wrote: > On Wed, 21 Jan 2004, Roberto Nunnari wrote: > > > Removable Sequential Access SCSI-3 device > > > it seams that if I use a new tape, then I can dump on it.. > > but if I try to overwrite the tape, it starts behaving funny. > > also.. anytime I try to write to a non new tape, it will > > make errors and turn on the dirt led. > > The result is that it's not possible to make any reliable > > dump/restore on it. > > > > the tape drive is less than 1 year old and the tapes are > > of good quality. > > My experience with this on DLT tapes is that this is caused by a damaged > head assembly or something is seriously out of alignment. In other words, > its not something you can fix. If it is less than a year old, then it > should still be under warranty. I suggest you take advantage of that. As a side note: make sure you do not mount DLT drives with the head assembly too close to source of electrical noise. Particularly switching power supplies are know to cause "head cleaning needed" LEDs which are plain bogus. I have personal experience with this phenomenon. -- Wilko Bulte wilko@FreeBSD.org