I recently read a tip on lifehacker about checking and fixing downloaded
ISO media with bittorrent. bittorrent is designed for small incremental
part downloads and organizing that data which could make it a nice fit
for remote filesystem syncing with any filesystem that can do readable
snapshots.
consider make an LVM snapshot and then a torrent file for it. setup
your backuppc server as a bittorrent tacker. send the torrent to the
remote machine and run it with rtorrent or some cli torrent client.
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