Introducing Network File System Version 4 on HP-UX 11i v3

Figure 12. Restarting NFSv4 server services

By default, NFS clients and servers negotiate which protocol version to use. The client and server use

the highest numbered protocol version that both the client and server support. For example, if the

client supports NFSv2, NFSv3, and NFSv4 and the server supports only NFSv2 and NFSv3, then the

client and server agree to use NFSv3. In this way, NFSv4 clients and servers work seamlessly with

other clients and servers that do not support NFSv4.

To enable only NFSv4 mounts, set the configuration parameters NFS_SERVER_VERSMIN and

NFS_SERVER_VERSMAX to 4. The configuration parameters NFS_SERVER_VERSMIN and

NFS_SERVER_VERSMAX tell the NFS server the range of NFS protocol versions to enable. For

example, to enable only NFSv3 and NFSv4 mounts, set the configuration parameters

NFS_SERVER_VERSMIN and NFS_SERVER_VERSMAX to 3 and 4, respectively.

After restarting the NFS server, check the /var/adm/syslog/syslog.log file for any error messages.

Lastly, share the directories that are to be made mountable by executing the share command. See

man page share(1M) for details.

nfsmapid: Name-based user and group IDs

Whereas previous NFS protocol versions used 32-bit integers to represent user identifiers (UIDs) and

group identifiers (GIDs), NFSv4 servers and clients exchange file owner and group attributes in the

form of strings.