Open System Services NFS SCF Reference Manual

Open System Services NFS SCF Reference Manual—522582-001
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Introduction
This section contains the following information:
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A general description of the Subsystem Control Facility (SCF), which is an operator
interface to the Network File System (NFS) subsystem.
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Descriptions of the OSS NFS object types supported by SCF.
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Descriptions of the OSS NFS object-specs and naming rules for each object.
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A general description of the attribute specifiers you use to define objects.
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Descriptions of the summary states supported by OSS NFS.
Overview
The OSS NFS subsystem is a network file server that uses the Network File System
(NFS) protocol developed by Sun Microsystems. OSS NFS allows NFS client users on
workstations, PCs, or other network hosts to create, access, and share files on NonStop
Himalaya systems. Clients can share UNIX, DOS, Windows NT, Macintosh, and
Enscribe disk files with users and applications on other systems. To use OSS NFS, the
client machine must be able to issue NFS client requests using the Transmission Control
Protocol/Internet Protocol (TCP/IP) over a local area network (LAN).
This manual describes the subsystem-specific details for using SCF to configure,
control, and inquire about the OSS NFS subsystem, which operates through the OSS
NFS manager process, the LAN interface process, and NFS server processes.
To use SCF, the OSS NFS manager process must first be configured as described in the
Open System Services NFS Management and Operations Guide.
Figure 1-1
, illustrates the relationships among the OSS NFS, Compaq NonStop TCP/IP,
and SCF subsystems:
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The Subsystem Control Point (SCP) provides the programmatic interface to OSS
NFS using standard Subsystem Programmatic Interface (SPI) commands and
responses.
•
The NFS manager program (NFSMGR), typically named $ZNFS, runs as a process.
NFSMGR accepts commands, reports errors, and generates event messages.
•
The helper process (NFSMGR2 program) is started and stopped as needed to
provide address resolution and other LAN-related services to the manager process.
•
The LAN interface process (NFSLAN program) acts as a front end for NFS requests
received from the NonStop TCP/IP subsystem. It forwards mount protocol requests
to the manager process and relays NFS protocol requests to the appropriate server
processes.
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A server process (NFSSVRHP program) runs for each OSS NFS SERVER object
added and started. The server processes manage the files in the hierarchy defined
for each server.