[lug] Backup comparison: rdiff-backup and rsync snapshots

[Daniel Webb]

I'm curious as to the relative merits of rdiff-backup vs. rsync snapshots
(http://www.mikerubel.org/computers/rsync_snapshots/).  Am I mistaken in
thinking that the rsync snapshots method would be very inefficient if a small
part of a large file (like revision control databases) changed regularly?  How
much overhead is involved in all those hardlinks compared to rdiff-backup's
metadata overhead?