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1 | .\" Copyright (c) 1993 |
2 | .\" The Regents of the University of California. All rights reserved. | |
3 | .\" | |
4 | .\" This document is derived from software contributed to Berkeley by | |
5 | .\" Rick Macklem at The University of Guelph. | |
6 | .\" | |
c0567266 KB |
7 | .\" Redistribution and use in source and binary forms, with or without |
8 | .\" modification, are permitted provided that the following conditions | |
9 | .\" are met: | |
10 | .\" 1. Redistributions of source code must retain the above copyright | |
11 | .\" notice, this list of conditions and the following disclaimer. | |
12 | .\" 2. Redistributions in binary form must reproduce the above copyright | |
13 | .\" notice, this list of conditions and the following disclaimer in the | |
14 | .\" documentation and/or other materials provided with the distribution. | |
15 | .\" 3. All advertising materials mentioning features or use of this software | |
16 | .\" must display the following acknowledgement: | |
17 | .\" This product includes software developed by the University of | |
18 | .\" California, Berkeley and its contributors. | |
19 | .\" 4. Neither the name of the University nor the names of its contributors | |
20 | .\" may be used to endorse or promote products derived from this software | |
21 | .\" without specific prior written permission. | |
22 | .\" | |
23 | .\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND | |
24 | .\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
25 | .\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
26 | .\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE | |
27 | .\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |
28 | .\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | |
29 | .\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
30 | .\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | |
31 | .\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | |
32 | .\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | |
33 | .\" SUCH DAMAGE. | |
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34 | .\" |
35 | .\" @(#)0.t 8.1 (Berkeley) 6/8/93 | |
36 | .\" | |
37 | .(l C | |
38 | .sz 14 | |
39 | .b "The 4.4BSD NFS Implementation" | |
40 | .sp | |
41 | .sz 10 | |
42 | Rick Macklem | |
43 | .i "University of Guelph" | |
44 | .)l | |
45 | .sp 2 | |
46 | .ce 1 | |
47 | .sz 12 | |
48 | .b "ABSTRACT" | |
49 | .eh 'SMM:06-%''The 4.4BSD NFS Implementation' | |
50 | .oh 'The 4.4BSD NFS Implementation''SMM:06-%' | |
51 | .pp | |
52 | The 4.4BSD implementation of the Network File System (NFS)\** is | |
53 | intended to interoperate with | |
54 | .(f | |
55 | \**Network File System (NFS) is believed to be a registered trademark of | |
56 | Sun Microsystems Inc. | |
57 | .)f | |
58 | other NFS Version 2 Protocol (RFC1094) implementations but also | |
59 | allows use of an alternate protocol that is hoped to provide better | |
60 | performance in certain environments. | |
61 | This paper will informally discuss these various protocol features and | |
62 | their use. | |
63 | There is a brief overview of the implementation followed | |
64 | by several sections on various problem areas related to NFS | |
65 | and some hints on how to deal with them. | |
66 | .pp | |
67 | Not Quite NFS (NQNFS) is an NFS like protocol designed to maintain full cache | |
68 | consistency between clients in a crash tolerant manner. It is an adaptation | |
69 | of the NFS protocol such that the server supports both NFS | |
70 | and NQNFS clients while maintaining full consistency between the server and | |
71 | NQNFS clients. | |
72 | It borrows heavily from work done on Spritely-NFS [Srinivasan89], but uses | |
73 | Leases [Gray89] to avoid the need to recover server state information | |
74 | after a crash. | |
75 | .sp |