Embodiments of the present invention can comprise systems and methods for managing filesystems and can provide a programmable filesystem with active rules and policies, an n-tier network filesystem, stack mounting, a union filesystem with write-through semantics, a filesystem middleware with selective...http://www.google.co.uk/patents/US8032501?utm_source=gb-gplus-sharePatent US8032501 - Method and apparatus for managing file systems and file-based data
