Is anyone working on a Virtual Differential feature? Consider the following 
jobs in chronological order:

A - Full
B - Incremental
C - Incremental
D - Differential
E - Incremental
F - Incremental

I would like to create a Virtual Differential which was an accumulation of 
D+E+F and would be equivalent to a Differential job run at F. There was some 
discussion on this around 2008 but it doesn't appear to have gone anywhere.

A virtual incremental feature would be nifty too, eg given these backups:

A - Full
B - Incremental
C - Incremental
D - Incremental
E - Incremental
F - Incremental
G - Incremental

I would like to be able to create a virtual incremental rollup for B-E. I think 
this would only work if B, C, D, and E were then deleted afterwards though or 
Bacula might get confused about which jobs to select on a restore.

My ultimate goal would be to be able to specify retention policies, eg:

Hourly restore points for the last 7 days
Daily restore points for the last 4 weeks, based on Fridays
Monthly restore points for the last 12 months, based on the 31st of the month
Yearly restore points for the last 7 years, based on June 30 (our financial 
year starts July 1)

And then just have Bacula figure out how to make it work, scheduling virtual 
consolidate jobs as required.

Thanks

James


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