NFS Illustrated

Written for programmers creating NFS-based applications, network engineers creating new implementations of NFS, and network managers, NFS Illustrated promotes a thorough understanding of that protocol, animating it through extensive diagrams and real protocol traces that show NFS in action. Covering NFS versions 2 and 3, the book also looks into WebNFS and the new NFS version 4, with Internet support. Detailed and authoritative, the book not only examines NFS in depth, but also describes the protocols that underlie and support it, including External Data Representation (XDR), Remote Procedure Call (RPC), the NFS MOUNT protocol, and the NFS Lock Manager protocol. It discusses several NFS variants and compares NFS to a number of alternative file systems.

You will find a detailed discussion on the NFS filesystem model and a procedure-by-procedure description of NFS versions 2 and 3, illustrated through the use of snoop traces that capture and display protocol packets from the network. In addition, the book addresses real-world implementation issues faced by those building an NFS client or server, factors that affect NFS performance, and critical performance benchmarks.

Specific topics of interest include:

• NFS version 4, highlighting performance improvements, security features, and cross-platform interoperability for Internet operation
  
• RPC authentication and security
  
• Differences between NFS versions 2 and 3
  
• Implementation issues for clients and servers
  
• Read-ahead and write-behind
  
• Caching policies
  
• The Lock Manager protocol
  
• Automounting
  
• NFS variants, including Spritely NFS, NQNFS, Trusted NFS, and NASD NFS
  
• NFS competitors: RFS, AFS, DCE/DFS, and CIFS
  
• The PCNFS protocol for implementing NFS on PC operating systems
  
• SPEC SFS benchmarks, WebNFS, and firewalls

Comprehensive and current, NFS Illustrated is an essential resource for network professionals who want to use this widespread and evolving technology to its fullest.

Table of contents

Preface

Chapter 1 : Introduction

Chapter 2 : XDR::External Data Representation

Chapter 3 : ONC RPC

Chapter 4 : RPC Authentication

Chapter 5 : NFS Filesystem Model

Chapter 6 : NFS Version 2

Chapter 7 : NFS Version 3

Chapter 8 : NFS Implementation

Chapter 9 : NFS MOUNT Protocol

Chapter 10 : NFS Lock Manager Protocol

Chapter 11 : Automounting

Chapter 12 : NFS Variants

Chapter 13 : Other Distributed Filesystems

Chapter 14 : PC NFS

Chapter 16 : WebNFS

Chapter 17 : NFS Version 4

References

Index