Issues

• NFSv4 does not provide a filesystem location discovery protocol. Implementation must therefore address the following:

  • How is the server NFS layer informed of the replica locations (example: share options in dfstab).
  • How does the client determine which of the replicas the server supplied is preferred (proximity work at IETF?).
  • What if the different servers fs_locations lists don't match.
  • What if some of the servers don't support NFSv4? Do we only use the NFSv4 servers, or use the version supported by the majority?
  • fs_locations may be out of date when failover occurs.