I currently use the --files-from option to list the directories to be included in the backup, which go into a single snapshot. In practical terms, is it preferable to take a snapshot for each directory? Are there pros and cons?
No need for separate snapshots. Why are you using --files-from instead of just listing the directories you want to back up in the restic command?
it’s just for convenience, the list is external to the launch script.
Okay, well nothing in what you’ve said so far suggests there’s a point in multiple backup runs just to make one snapshot per directory.