Newbie question: Problem with forgetting/pruning changing subfolders

[arkadi]

I was reading a thread lately that I think is relevant to your problem.

Restic incremental backup report confusing

The --group-by option is for when you want to delete snapshots, not create them. As long as you have the disk space, there isn’t any rush to think about this now; get comfortable with the restic backup process first, and then start learning about snapshot deletion and --group-by here. The challenge you’re facing right now is only about optimizing your backup process. It needs some additional info if you want it to run as fast as possible. The presence of a parent snapshot speeds-up a backup be…