From owner-freebsd-hardware  Wed Dec 10 20:58:59 1997
Return-Path: <owner-freebsd-hardware>
Received: (from root@localhost)
          by hub.freebsd.org (8.8.7/8.8.7) id UAA02133
          for hardware-outgoing; Wed, 10 Dec 1997 20:58:59 -0800 (PST)
          (envelope-from owner-freebsd-hardware)
Received: from mail.jump.net (serv1.jump.net [204.238.120.4])
          by hub.freebsd.org (8.8.7/8.8.7) with ESMTP id UAA02098;
          Wed, 10 Dec 1997 20:58:46 -0800 (PST)
          (envelope-from aa@jump.net)
Received: from bubba by mail.jump.net (8.8.8/jump.1.11)
	 id WAA24265; 
Message-ID: <348F72F6.6B37@jump.net>
Date: Wed, 10 Dec 1997 22:58:30 -0600
From: Allan Alford <aa@jump.net>
X-Mailer: Mozilla 3.01Gold (Win95; I)
MIME-Version: 1.0
To: freebsd-hardware@FreeBSD.ORG
CC: freebsd-scsi@FreeBSD.ORG
Subject: Re: Wangtek 51000HT 1/4"  SCSI-2 QIC 1000
References: <348F0FB9.C6C@jump.net> <19971211011508.60795@uriah.heep.sax.de>
Content-Type: text/plain; charset=us-ascii
Content-Transfer-Encoding: 7bit
Sender: owner-freebsd-hardware@FreeBSD.ORG
X-Loop: FreeBSD.org
Precedence: bulk

J Wunsch wrote:

> How exactly do you do it?  It works for me.
> 

I've been using the following syntax in my script:

tar -cv /dev/nrst0 /foo
tar -cv /dev/nrst0 /bar
tar -cv /dev/nrst0 /foobar

When I check the tape the next morning, I do:

mt rewind
(tape already seems to be rewound)
tar -tv
(yields the tar of foobar - the last from the list)
mt fsf 1
(nothing seems to happen)
tar -tv
(yields the tar of foobar - the last from the list)

Is there a quicker way to test and make sure that the /nrst0 device
really is no rewind?  Some way to copy something directly, perhaps?

cpio, maybe?  I've only ever worked with DAT in the past and have
never had these problems.

> > Dumping a 496meg file system reports that I need 10.2 tapes!
> 
> Dumps defaults are stupid.  Use `dump -a' instead (but beware, EOF
> detection is currently broken, there's an open PR for this).

Other folks recommended this strategy.  I will try this one in the
morning.

Thank you all for your help.

Also, Joerg, since you seem to know the particular device, I have one
last
question:

The docs indicate that I can jump the 51000HT to be either SCSI-1 or
SCSI-2
and yet the jumper maps show no such jumper.  Currently, I'm SCSI 1.  Do
you know how to set this?

= allan