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NFS Services Administrator's Guide: HP-UX 11i version 3
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HP Part Number: B1031-90061

Published: March 2007

© Copyright 2007 Hewlett-Packard Development Company, L.P.

Table of Contents

Preface: About This Document
Intended Audience
Publishing History
What’s in This document
Typographical Conventions
HP Encourages Your Comments
1 Introduction
ONC Services Overview
Network File System (NFS)
How NFS works
New Features in NFS
NFS Version 4 Protocol (NFSv4)
Sharing and Unsharing Directories
Mounting and Unmounting Directories
Support for WebNFS
Secure Sharing of Directories
Client Failover
Enhanced NFS Logging
IPv6 Support
AutoFS
The AutoFS Environment
New Features in AutoFS
CacheFS
How CacheFS Works
New Features in CacheFS
2 Configuring and Administering NFS Services
Prerequisites
Verifying Network Connectivity
Verifying User IDs and Group IDs Setup
Verifying Group Restrictions
Configuring and Administering an NFS Server
NFS Configuration Files and Daemons
Configuring the NFSv4 Server Protocol Version
Enabling an NFS Server
Sharing Directories with NFS Clients
Secure Sharing of Directories
Accessing Shared NFS Directories across a Firewall
Configuring an NFS Server for use by a PC NFS client
Unsharing (Removing) a Shared Directory
Disabling the NFS Server
Configuring and Administering NFS Clients
NFS Client Configuration Files and Daemons
Configuring the NFSv4 Client Protocol Version
Deciding Between Standard-Mounted Directories and Automounted Directories
Enabling an NFS Client
Mounting Remote Directories
Enabling Client-Side Failover
Secure Mounting of Directories
Changing the Default Mount Options
Unmounting (Removing) a Mounted Directory
Disabling NFS Client Capability
NFS Client and Server Transport Connections
Supporting 1MB Transfer for TCP mounts
Changes to the NFS Server Daemon
Configuring and Using NFS Netgroups
Creating Netgroups in the /etc/netgroup File
Using Netgroups in Configuration Files
Configuring RPC-based Services
Enabling Other RPC Services
Restricting Access to RPC-based Services
3 Configuring and Administering AutoFS
How AutoFS Works
Supported Filesystems
On-Demand Mounting
Browsability for Indirect Maps
NFS Loopback Mount
Map Locations (Backends)
Enabling AutoFS for LDAP Support
Enabling AutoFS
Disabling AutoFS
Restarting AutoFS
AutoFS Configuration Prerequisites
Deciding Between Direct and Indirect NFS Automounts
How AutoFS Sets Up Direct and Indirect Mounts
Automounting a Remote Directory Using a Direct Map
Notes on Direct Maps
Sample File Entries for NFS Direct Automounts
Automounting a Remote Directory Using an Indirect Map
Notes on Indirect Maps
Sample File Entries for NFS Indirect Automounts
Automounting Home Directories
Example of Automounting a User’s Home Directory
Automounting All Exported Directories from Any Host Using the -hosts Map
Notes on the -hosts Map
Automounting Multiple Directories (Hierarchical Mounts)
Configuring Replicated Servers for an AutoFS Directory
Example of using the /etc/netmasks File
Notes on Configuring Replicated Servers
Using Executable Maps
Using Environment Variables as Shortcuts in AutoFS Maps
Notes on Using Environment Variables as Shortcuts in Maps
Using Wildcard Characters as Shortcuts in AutoFS Maps
Notes on Using Wildcard Characters as Shortcuts in Maps
Including a Map in Another Map
Creating a Hierarchy of AutoFS Maps
Example Map Hierarchy
The -null Map
Turning Off an AutoFS Map with the -null Map
Modifying or Removing an Automounted Directory from a Map
Verifying the AutoFS Configuration
Automount Command Line Options
Automountd Command Line Options
4 Configuring and Administering a Cache Filesystem
CacheFS Overview
CacheFS Terms
Configuring CacheFS
Configuring Cache in a Local Filesystem
Mounting an NFS Filesystem using CacheFS
Automounting a Filesystem Using CacheFS
Administering CacheFS
Displaying Information About a Cache
Checking the Integrity of a Cache
Forcing a Cache Consistency Check
Displaying CacheFS Statistics
Packing a Cached Filesystem
Unmounting a CacheFS Filesystem
Deleting a Cache Directory
5 Troubleshooting NFS Services
Common Problems with NFS
NFS “Server Not Responding” Message
“Access Denied” Message
“Permission Denied” Message
“Device Busy” Message
“Stale File Handle” Message
A Program Hangs
Data is Lost Between the Client and the Server
“Too Many Levels of Remote in Path” Message
Common Problems while using Secure NFS with Kerberos
“Permission Denied” Message
Common Problems while using CacheFS
“Cannot open lock file /c/.cfs_lock” or “Cache /c is in use and cannot be modified” Message
“cachefsstat: Cannot zero statistics” Message
“cfsadmin: Cannot create lock file /test/mnt/c/.cfs_lock” Message
“/test/c/.cfs_mnt_points is not a valid cache” Message
“mount failed No space left on device” Message
Performance Tuning
Diagnose NFS Performance Problems
Improve NFS Server Performance
Improving NFS Client Performance
Logging and Tracing of NFS Services
AutoFS Logging
AutoFS Tracing
Logging for the Other NFS Services
Logging With nettl and netfmt
Tracing With nettl and netfmt
Index

List of Figures

1-1 Server View of the Shared Directories
1-2 Interaction among AutoFS components
1-3 CacheFS Workflow Process
2-1 Symbolic Links in NFS Mounts
2-2 WebNFS Session
2-3 NFS Mount of manpages
2-4 NFS Mount of Home Directories
3-1 Automounted Directories for On-Demand Mounting
3-2 Difference Between Direct Mounts and Indirect Mounts
3-3 How AutoFS Sets Up Direct Mounts
3-4 How AutoFS Sets Up NFS Indirect Mounts
3-5 Home Directories Automounted with Wildcards
3-6 Automounted Directories from the -hosts Map—One Server
3-7 Automounted Directories from the -hosts Map—Two Servers

List of Tables

1 Publishing History Details
2-1 NFS Server Configuration Files
2-2 NFS Server Daemons
2-3 Security Modes of the share command
2-4 NFS Session Versus WebNFS Session
2-5 NFS client configuration files
2-6 NFS client daemons
2-7 Standard-Mounted Versus Automounted Directories
2-8 RPC Services managed by inetd
3-1 Direct Versus Indirect AutoFS Map Types
3-2 Automount Command-Line Options for AutoFS
3-3 Automountd Command-Line Options for AutoFS
5-1 Stale File Handle Sequence of Events
   


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© 2007 Hewlett-Packard Development Company, L.P.