Craig Barratt wrote at about 15:01:04 -0800 on Monday, March 1, 2010:
 > Backups will be stored as reverse deltas, so only the most recent is
 > complete, and all the prior backups are just the deltas to re-create
 > the prior backups.  The prior backups will no longer need to have
 > complete directory trees - they will only be deep enough to represent
 > the necessary changes from the next more recent backup.  That means
 > the storage will be decoupled from whether the backup itself is full
 > or incremental.  And all new backups will be relative to the most
 > recent (ie: IncrLevels will disappear).  There are several advantages
 > here, mainly around efficiency since the most recent backup is the
 > one that is used most often (for new backups or restores).  Plus
 > the most recent backup will be modified in place, rather than being
 > rewritten every time with hardlinks.  That should improve performance
 > too.

One more thought/suggestion. Would it make sense to include some of
the backuppc-fuse code in your new version? I really find it extremely
useful -- in fact, I don't think I have touched the web interface
since the first time I played with BackupPC. Perhaps it's not a
replacement for the web way of browsing, but I just love the ability to
read and browse backups using normal *nix commands without having to
worry about mangling and zcatting or even knowing the backup number
(if you use the 'latest' link).

It seems like the web-based backup browser and backuppc-fuse end up
having to do the same 'delta' reconstruction so it might be helpful to
both approaches if they shared the same underlying file access &
reconstruction code and then just differed in the sense that one
approach uses a web-based browsing metaphor while the other uses a
fuse-filesystem mounting metaphor.

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