Re: [Duplicity-talk] Set base for delta

[edgar . soldin]

Hi Sterling,

> Looking at duplicity currently, it appears that deltas
> are always from the previous backup.  Is that correct?

yes

> Are there any options to change this?

unfortunately no

> Specifically, the data I want to back up is large
> relative to my slow Internet connection.
> So, I would prefer doing full backups infrequently,
> and do relative to the length 2 chain, instead of length 1.
> Something like:
> Full backup every 3 months
> Level 2 delta every 2 weeks
> Ordinary incremental daily

what is the difference between a (level 2) delta and an incremental exactly? 
 
> This would also make cleaning up old deltas easier,
> since the level 2 delta would make everything between
> it and the full backup unnecessary.
> (Note that this configuration vs. without level 2 deltas
> would only have chains of length 15 instead of 90.)
> 

..ede/duply.net