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Date:      Thu, 17 May 2012 12:52:04 +0100
From:      Mike Clarke <>
Cc:        Matthias Petermann <>
Subject:   Re: Filesystem dump incremental?
Message-ID:  <>
In-Reply-To: <>
References:  <>

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On Thursday 17 May 2012, Matthias Petermann wrote:

> dump -a -1 -f /mnt/da0/backup-compaq.1.dump /

Try a new full backup with

     dump -0aLuf /mnt/da0/backup-compaq.1.dump /

then for the incremental use

     dump -1aLuf /mnt/da0/backup-compaq.1.dump /

The option you're missing is "u", but "L" is worth using as well when 
you're backing up a mounted filesystem.

You could hack the contents of /etc/dumpdates to avoid having to repeat 
the level zero dump if you know the date and time when the original one 
was started.

Mike Clarke

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