HP-UX 11i June 2002 Release Notes

New and Changed Disk and File Management Features
Network File System Support on TCP/IP
Chapter 11
199
Kernel TCP threads execute under the process nfskdtcp. When counting the number of
nfsd processes, keep in mind the following algorithm: An equal number of nfsds that
support UDP will be created per processor, but only one nfsd that supports TCP will be
created. In the case of a four-way machine and NUM_NFSDS=14 (set in
/etc/rc.config.d/nfsconf), 17 nfsds will be created: 16 for UDP (4 per processor) and
1 for TCP.
The nfsstat command now reports TCP RPC statistics for both client and server. The
TCP statistics are under the connection-oriented tag and the UDP statistics are under
the connectionless-oriented tag.
AutoFS supports the proto= option in the Automounter maps and has the same
behavior described above under the mount_nfs command. In the past, this was an
invalid option.
However, Automounter will not support NFS over TCP.
Unlike the 11.0 patch release of NFS over TCP, there is no enablement flag in the 11i
release for NFS over TCP. By default, NFS will attempt to use TCP.
The kernel RPC layer has been modified to support TCP connections over NFS. A new
streams module, rpcmod, has been added to manage the TCP connections. These changes
are internal to the NFS implementation and are not user accessible.
Documentation Changes
The following manpages have been modified for this new feature:
• mount_nfs (1M)
• nfsd (1M)
• automount (1M)
• nfsstat (1M)