I'm backuping a host through an unstable link. So, each time the ssh connection get broken and rdiff-backup can't finish the backup. When I restart it, I get "Previous backup seems to have failed, regressing destination now" and all restart to zero.
Is there a way to resume a backup without regressing destination?
The only solution I found for the moment is to : - first to use rsync to backup to a folder on the destination (I can resume with it) - rdiff in local on the destination host but it use twice the space.
Have you an other idea to do it without using twice the space?