From owner-freebsd-questions@FreeBSD.ORG  Thu Jun 12 10:25:58 2003
Return-Path: <owner-freebsd-questions@FreeBSD.ORG>
Delivered-To: freebsd-questions@freebsd.org
Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125])
	by hub.freebsd.org (Postfix) with ESMTP id 73C4D37B401
	for <freebsd-questions@freebsd.org>;
	Thu, 12 Jun 2003 10:25:58 -0700 (PDT)
Received: from mars.oxyd.fr (mars.oxyd.fr [212.43.245.66])
	by mx1.FreeBSD.org (Postfix) with ESMTP id 07D1A43F3F
	for <freebsd-questions@freebsd.org>;
	Thu, 12 Jun 2003 10:25:57 -0700 (PDT)
	(envelope-from pcasidy@casidy.com)
Received: from gueway.home (du-253-140.nat.adsl.claranet.fr [212.43.253.140])
	by mars.oxyd.fr (8.12.6/8.12.3) with ESMTP id h5CHPsxd086000
	for <freebsd-questions@freebsd.org>;
	Thu, 12 Jun 2003 19:25:54 +0200 (CEST)
	(envelope-from pcasidy@casidy.com)
Received: from casidy.com (littleoak.home [192.168.1.3])
	by gueway.home (8.12.9/8.12.9) with ESMTP id h5CHQuoG029117
	for <freebsd-questions@freebsd.org>;
	Thu, 12 Jun 2003 19:27:04 +0200 (CEST)
	(envelope-from pcasidy@casidy.com)
Message-Id: <200306121727.h5CHQuoG029117@gueway.home>
Date: Thu, 5 Jun 2003 12:35:41 +0200 (CEST)
From: pcasidy@casidy.com
To: freebsd-questions@freebsd.org
MIME-Version: 1.0
Content-Type: TEXT/plain; charset=us-ascii
Subject: Cant write filemarks on DDS-4 Tapes
X-BeenThere: freebsd-questions@freebsd.org
X-Mailman-Version: 2.1.1
Precedence: list
List-Id: User questions <freebsd-questions.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-questions>,
	<mailto:freebsd-questions-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-questions>
List-Post: <mailto:freebsd-questions@freebsd.org>
List-Help: <mailto:freebsd-questions-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-questions>,
	<mailto:freebsd-questions-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Thu, 12 Jun 2003 17:25:58 -0000

[As posted on freebsd-scsi]

Hello

I currently face a strange problems.

I use several type of tapes; from 1Gb to 20Gb tapes.
I can read and write from of them but DDS-4 (20Gb)!

I can read DDS-4 btu cannot write on them.

When I try to write on a DDS-4 I encounter an error:
[gueway] ~# tar c /
tar: Removing leading `/' from member names
tar: /dev/sa0: Wrote only 0 of 10240 bytes
tar: Error is not recoverable: exiting now

and /var/log/messages says:
Jun  5 12:28:09 gueway /kernel: (sa0:sym0:0:5:0): WRITE FILEMARKS. CDB: 10 0 0 0 1 0 
Jun  5 12:28:09 gueway /kernel: (sa0:sym0:0:5:0): MEDIUM ERROR info:1 asc:c,0
Jun  5 12:28:09 gueway /kernel: (sa0:sym0:0:5:0): Write error
Jun  5 12:28:09 gueway /kernel: (sa0:sym0:0:5:0): failed to write terminating filemark(s)

every time a filemark has to be written, I have the same error.

For information, mt status gives:
[gueway] ~# mt status
Mode      Density              Blocksize      bpi      Compression
Current:  0x26:DDS-4           variable       97000    DCLZ
---------available modes---------
0:        0x26:DDS-4           variable       97000    DCLZ
1:        0x26:DDS-4           variable       97000    DCLZ
2:        0x26:DDS-4           variable       97000    DCLZ
3:        0x26:DDS-4           variable       97000    DCLZ
---------------------------------
Current Driver State: at rest.
---------------------------------
File Number: 0  Record Number: 0        Residual Count 0

Changing comp to off, or blocksize to 1024 does not help.

I do not understand why i can write on DDS-2 or DDS-3 but not on DDS-4
(i used to several months ago).

I need your help ;)

Thanks

Phil.