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Date:      28 Oct 1999 12:12:02 +0200
From:      naddy@mips.rhein-neckar.de (Christian Weisgerber)
To:        freebsd-questions@freebsd.org
Subject:   Re: Dump and SDT9000 Tape questions
Message-ID:  <7v97hi$1m8q$1@bigeye.rhein-neckar.de>
References:  <bulk.15192.19991027065408@hub.freebsd.org> <455410205.941053248@w148.z208036085.nyc-ny.dsl.cnc.net>

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Iron Yuppie <aronchick@formatta.com> wrote:

> 1) how do i figure out how much room is left on a given tape?

Assuming the drive does compression, you probably can't.

> 2) how do dump to the end of a tape (i.e. after the last dump rather than
> at the start) after it's been rewound?

Wind it forward again to the end of recorded medium ("mt eom").
Generally, see the mt(1) man page for lots of useful tape operations.

> 3) how do I restore incremental backups after the first?  restore -t
> doesn't show anything but the first.

I'm not sure I understand your problem. Use mt or restore's -s
option to wind forward to a particular dump on the tape.

> 4) what do i do about compression? It's a 12/24 GB tape, so I'm thinking I
> put 
> "dump -0u -B 12582912 -b 64 /dev/nrsa0 /"

dump 0auf /dev/nrsa0 /

-- 
Christian "naddy" Weisgerber                  naddy@mips.rhein-neckar.de



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