from http://linux.conf.au/programme/detail?TalkID=247 :

	The network protocol gives clients a view of a file
	system via a network connection. It uses a novel
	representation of file system structures to minimize the
	overhead of interacting with a remote file system over
	the network.  It uses a cache coherency protocol to
	allow clients to benefit from caching while still
	communicating changes promptly to clients. It supports
	robust file system conventions like checksumming of data
	and metadata, applying modification as atomic
	transactions, and rapid and seamless recovery in the
	presence of network failures. 

CRFS is a culmination of a bunch of ideas that Zach Brown
<zab@zabbo.net> got while working on Lustre, OCFS2, and a few other
filesystem prototype projects.  he's interested in getting
other-than-linux client implementations going, (the server-end is
completely user-space,) and asked me to poke the NetBSD community for
interest.

-- 
  Aaron J. Grier | "Not your ordinary poofy goof." | agrier@poofygoof.com