Because every “file” in the snapshot is either a file or a hard link to an identical version of that file in another snapshot.) So this can be a problem if you store many snapshots of many files.
I think that you may be thinking of rsnapshot rather than rdiff-backup which has that behavior; both use rsync.
But I’m not sure why you’d be concerned about this behavior.
Are you worried about inode exhaustion on the destination filesystem?
koala@programming.dev 2 months ago
Huh, I think you’re right.
Before discovering ZFS, my previous backup solution was rdiff-backup. I have memories of it being problematic for me, but I may be wrong in my remembering of why it caused problems.