There is parsync:
http://moo.nac.uci.edu/~hjm/parsync
But I am not sure, if you can connect it to backuppc.
Jan

On 02/09/2017 04:09 AM, Kenneth Porter wrote:
> We all know that rsync's weakness is very large file sets. They have to be
> held in memory on both client and server to determine the change set to be
> transmitted. So it's reasonable to want to be able to break up a large
> backup client into multiple backup jobs by splitting subdirectories into
> their own backups, and adding exclusions to the original backup. It would
> be nice to be able to break up the latest snapshot from the original backup
> to create a seed backup for the new subdirectory jobs. Has anyone tried to
> automate this?
>
> I have a couple machines that regularly fail their backups because they
> take so long from the huge file sets so I'm about to embark on breaking
> them up to deal with it.
>
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