Is there a way to use rdiff-backup to store an entire drive image without
using an intermediate file?
For example, instead of
dd if=/dev/hda | gzip > /mnt/hdb/hda.img
use rdiff-backup to create /mnt/hdb/hda.img but also have a rdiff-backup-data
dir with reverse diffs? Is this stupid? The idea came up with a conversation
on backing up Windows. I don't know much about Windows, but I remember the
last time I used it seriously (Window 98), it was very tough to backup and
restore. The only way I ever successfully did it was a full disk image, bit
for bit. None of the Windows backup software I ever tried worked. That was
part of what led me to Linux, it drove me crazy to know that my backups were
guaranteed to fail (happened three times).