I would like to run sha1sum or md5sum on all my files recursively, store the results to a file (or a couple of files) and then be able to scan through the files again to verify the integrity of the files.
tools like sha1sum / md5sum does not allow for recursive, and I would also like to spread the load so it uses more than one CPU core.
I do not yet feel safe putting my files on BTRFS and besides BTRFS does not yet work properly on raid5/6 so I am looking for a "quick" way to checksum all my files and verify them whenever I want. That way I would at least know if silent data corruption have hampered any of my files.
Does any tools exist that is designed for this purpose (yes, I am aware of SnapRAID)