My glusterfs mount has duplicated files, and when running rclone dedupe it doesn't find all the duplicates by name. It complains about being a local file system but runs anyway.
not a linux expert, but i thought that like most//all local file systems cannot handle duplicate names,
perhaps glusterfs does can handle duplicate names, but once mounted, linux cannot handle it.
gdrive remotes can have duplicate file names, and rclone dedupe can work on that.
but a rclone mount of that gdrive remote, rclone cannot display the duplicate filenames, since the linux file system cannot.