CephFS is the first counterexample that comes to mind. Recursive size and filecounts are available through extended file attributes (e.g. getfattr -d -m ceph.d

CephFS is the first counterexample that comes to mind. Recursive size and filecounts are available through extended file attributes (e.g. getfattr -d -m ceph.dir.* /path/to/dir) and can be made to be default in e.g. ls -l output.