User-space NFSv3 Server

UNFS3 is a user-space implementation of the NFSv3 server specification. It provides a daemon for the MOUNT and NFS protocols, which are used by NFS clients for accessing files on the server.

The goals of the UNFS3 project are, in order of importance:
  • Correctness: it should implement the semantics of NFSv3 as closely as possible. It should also detect races with local file system activity on the server.
  • Portability: it should run on any Unix-like operating system. So far, it is known to work on Linux and SunOS/Solaris.
  • Completeness: it should support all aspects of the NFSv3 specification, within the limits possible from user- space.
  • Performance: it should be as fast as possible. It is impossible to outmatch in-kernel NFS servers from user-space, but UNFS3 should not lag too far behind.

So far, UNFS3 passes the basic and general tests of the Connectathon 2004 NFS testsuite and survives fsx stress testing. The tests were run on Linux using the in-kernel NFS client.

You can use the links on the left to download the latest version of UNFS3 from GitHub. Please visit the GitHub project page for more information about the project.

The unfs3 git repository is hosted on GitHub.