[Duplicity-tracker] [bug #21812] Feature request: differential backups

[Andrew F]

Follow-up Comment #2, bug #21812 (project duplicity):

I agree. I’ve just set up Duplicity for a remote backup of my home
directory---which is fairly massive and I don’t think I can afford to do
full backups very often over the wire.

I’d like to go one better than the 'one better' and maybe take a full
backup every year or two, then have a /hierarchy/ of differential backups
based off that.

Level 0 is the full backup (yearly); level 1 is monthy incremental backups;
level 2 is daily incremental backups, relative to the previous monthly
incremental; level 3 is incremental hourly backups (if my bandwidth could
stand it), based off the previous daily incremental.

That way I could delete the hourly backups after a few days and delete the
daily backups after a few months.

Generally if you could specify for each incremental backup which other backup
it was relative to, that would be enough to support arbitrary levels. (And one
would wish to specify the 'base backup' using a time specifier.)

To top it off, it would beneficial to be able to say "delete all of the
backups between '24 March 2008 00:01' and '24 March 2008 23:59' which are
direct descendants of the '24 March 2008 00:00' backup.

That would be great.

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