Do you know if Restic supports block-level deduplication? I am backing up some database dumps and the backup filesystem has ballooned in size, even though the dumps are 99% identical every day. This makes me suspect that they only deduplicate on the file level, and that I would have some very significant savings if I zipped the dumps before backing up.

EDIT: Some details on deduplication are here, and I'm puzzled as to why my backups are so big: https://restic.readthedocs.io/en/latest/100_references.html?...