I recently started running into the dredded "Stale file handle" error when accessing a share via NFS (which I do between linux machines so that rsync based backups that support file versioning work; like rdiff-backup. as they need to be able to do hard and sym links to work, so SMB is out.   What I've discovered:   Exporting a share that has a cache enabled, works well... until the mover moves the files.  Then I start to get "Stale file handle" errors on the client side.  For