Since the eZDFS handler has no knowledge of folders in the meta data table, it doesn't remove the folders when empty.

This can be addressed in two places:

• in the eEDFSFileHandler::purge() method. When a file is removed, check if the containing folder & parent folders are empty, and remove if they are. Since this function is not called in realtime, it won't harm performances
• add a maintenance / one-shot script that removes them, mainly for "old" setups.

The main danger is running out of inodes on the server.