1998-01-09 09:54:57 +03:00
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.\" $NetBSD: 0.t,v 1.2 1998/01/09 06:55:35 perry Exp $
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.\"
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1994-06-19 04:07:16 +04:00
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.\" Copyright (c) 1993
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.\" The Regents of the University of California. All rights reserved.
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.\"
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.\" This document is derived from software contributed to Berkeley by
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.\" Rick Macklem at The University of Guelph.
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.\"
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.\" Redistribution and use in source and binary forms, with or without
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.\" modification, are permitted provided that the following conditions
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.\" are met:
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.\" 1. Redistributions of source code must retain the above copyright
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.\" notice, this list of conditions and the following disclaimer.
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.\" 2. Redistributions in binary form must reproduce the above copyright
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.\" notice, this list of conditions and the following disclaimer in the
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.\" documentation and/or other materials provided with the distribution.
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.\" 3. All advertising materials mentioning features or use of this software
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.\" must display the following acknowledgement:
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.\" This product includes software developed by the University of
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.\" California, Berkeley and its contributors.
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.\" 4. Neither the name of the University nor the names of its contributors
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.\" may be used to endorse or promote products derived from this software
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.\" without specific prior written permission.
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.\"
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.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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.\" SUCH DAMAGE.
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.\"
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.\" @(#)0.t 8.1 (Berkeley) 6/8/93
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.\"
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.(l C
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.sz 14
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.b "The 4.4BSD NFS Implementation"
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.sp
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.sz 10
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Rick Macklem
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.i "University of Guelph"
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.)l
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.sp 2
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.ce 1
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.sz 12
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.b "ABSTRACT"
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.eh 'SMM:06-%''The 4.4BSD NFS Implementation'
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.oh 'The 4.4BSD NFS Implementation''SMM:06-%'
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.pp
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The 4.4BSD implementation of the Network File System (NFS)\** is
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intended to interoperate with
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.(f
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\**Network File System (NFS) is believed to be a registered trademark of
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Sun Microsystems Inc.
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.)f
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other NFS Version 2 Protocol (RFC1094) implementations but also
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allows use of an alternate protocol that is hoped to provide better
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performance in certain environments.
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This paper will informally discuss these various protocol features and
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their use.
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There is a brief overview of the implementation followed
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by several sections on various problem areas related to NFS
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and some hints on how to deal with them.
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.pp
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Not Quite NFS (NQNFS) is an NFS like protocol designed to maintain full cache
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consistency between clients in a crash tolerant manner. It is an adaptation
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of the NFS protocol such that the server supports both NFS
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and NQNFS clients while maintaining full consistency between the server and
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NQNFS clients.
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It borrows heavily from work done on Spritely-NFS [Srinivasan89], but uses
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Leases [Gray89] to avoid the need to recover server state information
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after a crash.
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.sp
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