"What's interesting to me is that there doesn't seem to be a modern filesystem that works across all major platforms." What's interesting to me is that there i

"What's interesting to me is that there doesn't seem to be a modern filesystem that works across all major platforms." What's interesting to me is that there is no modern filesystem that has a useful ACL mechanism. Say you have a tree of say 100M files and subdirs: now give rights at various points - it takes ages. Your complaint can be worked around by remounting via an intermediary system and VMs are cheap. Mine is not really a complaint - per se - but a challenge: Why on earth can NSS (off of the 90s) do rich, recursive perms based on a "trustee assignment" on the fly but NTFS and Unix's finest not?