Sun’s VFS and NFS

4/21/00


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Table of Contents

Sun’s VFS and NFS

A Typical Unix File Tree

Filesystems

VFS: the Filesystem Switch

Vnodes

Vnode Operations and Attributes

V/Inode Cache

Continuum of Distributed Systems

Network File System (NFS)

NFS Protocol

NFS Vnodes

File Handles

Pathname Traversal

From Servers to Services

NFS: From Concept to Implementation

NFS as a “Stateless” Service

Drawbacks of a Stateless Service

The Synchronous Write Problem

Speeding Up NFS Writes

The Retransmission Problem

Solutions to the Retransmission Problem

File Cache Consistency

Author: Jeff Chase

Home Page: http://www.cs.duke.edu/~chase/cps110/slides