Holger Parplies wrote at about 02:04:05 +0100 on Saturday, March 9, 2013:
 > Hi,
 > 
 > Peter Carlsson wrote on 2013-03-08 23:21:38 +0100 [[BackupPC-users] 
 > Archiving incremental backups?]:
 > > Hello!
 > > 
 > > Is it possible to archive only the incremental part of a backup?
 > 
 > no, I don't think that is supported, and I also don't think it is a good
 > idea :-).
 > 
 > > I would like to make a tar archive only of the files that is part of an
 > > incremental backup.
 > 
 > What exactly are you trying to achieve? You are describing the wrong step
 > toward an unknown goal. We can't give you good advice without knowing what
 > you want to do.
 > 
 > In short, a tar file of a full backup + one (or more) tar files of 
 > incremental
 > backups *do not* equal a snapshot of your source file system at the point of
 > the last incremental, simply because you lose all information about files
 > being deleted (a tar file cannot represent files that are supposed to be
 > deleted on extraction, as far as I know). Of course, you might not have this
 > information in your BackupPC history, if you are using tar or smb transport,
 > but you can fix that by switching to rsync(d), and your archives will still
 > only be tar files.
 > 

However, if he is talking about 'tarring' the pc tree component for a
BackupPC incremental backup, then the deletions are indeed encoded in
the attrib files, though I am not sure how he would intend to
reconstruct it all in practice without some code to glue it back
together properly unless he is already has a copy of the fulls and is
maintaining a full incremental chain...

That being said, if that is what he means, he could just literally tar
the incremental backup tree... however, he would still lose the
pooling benefits...

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