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Date:      Mon, 13 Aug 2001 12:07:55 +0200
From:      Christoph Sold <so@i-clue.de>
To:        Todd Reed <ex279@hotmail.com>
Cc:        freebsd-questions@FreeBSD.ORG
Subject:   Re: Making Compressed Backups
Message-ID:  <3B77A6FB.3040209@i-clue.de>
References:  <F284j9n1xxWn9R6mJB500004338@hotmail.com>

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Todd Reed wrote:

> I've got a tape drive and I can backup my drive using "tar cv 
> /dev/nrsa0 /",  but, I'm wanting to compress it.  When I try "dump -0u 
> -f /dev/nrsa0 /", I  get an error message saying DUMP: bad sblock 
> magic number  DUMP: The ENTIRE  dump is aborted. 

You sure this drive is FFS? Dump can only backup Berkeley Fast File 
System drives. If it's, say, MS-Dumb, use gnu tar instead.

> What is the best way to backup the entire system to a tape with 
> compression? 

man mt tells how to enable compression on your tape drive.


HTH
-Christoph Sold


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