Filesystem dump incremental?

Mike Clarke jmc-freebsd2 at
Thu May 17 11:55:16 UTC 2012

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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