On Tue, Feb 28, 2017 at 11:08:31AM -0800, Josh England wrote: > The behavior I've noted so far from this patch seems to be very well > defined and follows the rule of least surprise (at least for me). I > can change files/directories in the shared root and the changes are > instantly visible to all clients. If a file/directory has been copied > up on the client that change takes precedence over changes in the > lower. Deletes work as expected. I haven't found a downside yet. Try to do something that invalidates a directory in underlying layer with stuff in overlay on its subdirectories.