> I'm looking for an replicated and offline capable network filesystem > which can work behind hi latency links.
presotto responded to a question about this a while back. might want to read about cfs, kfs and aan. i'm not sure what you mean by "extended 9p"; we like 9p the way it is :) http://groups.google.com/group/comp.os.plan9/browse_thread/thread/3a45160f9d693b7e/0657944cc8b7c1d5?lnk=gst&q=stash+fs&rnum=4#0657944cc8b7c1d5
