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From: grog@lemis.de (Greg Lehey)
Organisation: LEMIS, Schellnhausen 2, 36325 Feldatal, Germany
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Subject: mt (was: message without subject line)
To: msv@arisia.net (Mark S. Velasquez)
Date: Sat, 28 Sep 1996 11:43:56 +0200 (MET DST)
Cc: questions@FreeBSD.org (FreeBSD Questions)
In-Reply-To: <2.2.32.19960927193337.006ac718@207.100.94.5> from "Mark S. Velasquez" at Sep 27, 96 03:33:37 pm
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Mark S. Velasquez writes:
>
>
>   Well, I know I'm asking a stupid question, but I'll do it anyways :
>
>   I've installed a 4mm scsi tape drive(a Conner 4326NP) and then dumped my
> filesystems via the following script :
>
>  /sbin/dump 0udf 61000 ganymede:/dev/nrst0 /
> /sbin/dump 0udf 61000 ganymede:/dev/nrst0 /usr
> /sbin/dump 0udf 61000 ganymede:/dev/nrst0 /var
> /sbin/dump 0udf 61000 ganymede:/dev/nrst0 /export/home
> /sbin/dump 0udf 61000 ganymede:/dev/rst0 /export/cache
>
> This seems to work fine, however, when I do a "restore -if" to look at the
> tape, I can only see the first(/) filesystem I dumped.
> I'm doing an "mt -f /dev/rst0 fsf 1", etc. , to skip to the next dump-file
> on the tape, but I never get to the next dump. 

That's right.  /dev/rst0 is rewind on close.  This means you skip
forward one file, close the file and rewind it again.  When
positioning tapes, always use the no-rewind device (/dev/nrst0 here).
You're doing the right thing with your dump script by using /dev/nrst0
for all except the final dump.

You'll get more answers if you include a subject line.

Greg