NFS Services Administrator's Guide (B.11.31.03) August 2008

filesystems without having to mount them, to access the shared points from a
single common root.
The NFSv4 specification does not require a client to traverse the NFS server’s
namespace.
For example, a server shares /opt/dce, /opt/hpsmh, and /doc/archives
directories. In this list, the shared list hierarchy is not connected. The /doc/
archives directory is neither a parent nor a child directory of /opt.
Figure 1-1 shows the server view of the shared directories.
Figure 1-1 Server View of the Shared Directories
If the administrator shares /, and /opt/dce. If the client mounts then the NFS
client using NFSv2 and NFSv3 can mount /and /opt/dce. Attempts to mount
/opt will fail.
In NFSv4, the client can mount /, /opt and /opt/dce. If the client mounts /opt
and lists the contents of the directory, only the directory dce is seen. If you change
directory (cd) to dce, the contents of dce will be visible. HP-UX will allow the
client to transparently cross this filesystem boundary if the client has installed
B.11.31.03 or greater.
• String Identifiers
NFSv4 represents users and groups in the following manner:
users@domain
Or
group@domain
Where:
users specifies the string representation of the user
group specifies the string representation of the group
domain specifies a registered DNS domain or a sub-domain of a registered
domain
18 Introduction