On Fri, 9 May 2003 at 4:55pm, Per Nothagen wrote

> I would like to know how to configure Amanda to do differential backup, 
> that is make full backups once every week or so and then let the daily 
> backup only backup changes since the last full backup. I have read the man 
> pages carefully without success.
> 
> I would like to run one configuration for the full backup and another for 
> the differential so that I can decide when to do the full backup. I don't 
> see a problem with that, I can figure that out my self.

The question is, why?  Amanda can schedule this all quite well, and it's a 
lot less effort on your part to let it handle this.

> The problem I have is that I have not found how I shall tell Amanda that it 
> shall do the level 1 dump required for the differential run. The only way I 
> have found is to set bumpdays to a high value thus telling Amanda to make 
> many dumps at the same level but I feel that I can not trust that stays at 
> level 1. It would feel much safer if I could set "dumplevel 1" in the 
> configuration script. Is there a way to do something equivalent?

Look at the 'nofull' and 'incronly' dump strategies in the example 
amanda.conf.

-- 
Joshua Baker-LePain
Department of Biomedical Engineering
Duke University