1.\" $NetBSD: nfsd.8,v 1.23 2012/08/13 08:39:28 wiz Exp $ 2.\" 3.\" Copyright (c) 1989, 1991, 1993 4.\" The Regents of the University of California. All rights reserved. 5.\" 6.\" Redistribution and use in source and binary forms, with or without 7.\" modification, are permitted provided that the following conditions 8.\" are met: 9.\" 1. Redistributions of source code must retain the above copyright 10.\" notice, this list of conditions and the following disclaimer. 11.\" 2. Redistributions in binary form must reproduce the above copyright 12.\" notice, this list of conditions and the following disclaimer in the 13.\" documentation and/or other materials provided with the distribution. 14.\" 3. Neither the name of the University nor the names of its contributors 15.\" may be used to endorse or promote products derived from this software 16.\" without specific prior written permission. 17.\" 18.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 19.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 20.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 21.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 22.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 23.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 24.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 25.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 26.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 27.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 28.\" SUCH DAMAGE. 29.\" 30.\" @(#)nfsd.8 8.4 (Berkeley) 3/29/95 31.\" 32.Dd August 12, 2012 33.Dt NFSD 8 34.Os 35.Sh NAME 36.Nm nfsd 37.Nd remote 38.Tn NFS 39server 40.Sh SYNOPSIS 41.Nm 42.Op Fl 46rut 43.Op Fl n Ar num_threads 44.Sh DESCRIPTION 45.Nm 46runs on a server machine to service 47.Tn NFS 48requests from client machines. 49At least one 50.Nm 51must be running for a machine to operate as a server. 52.Pp 53Unless otherwise specified, four servers for 54.Tn UDP 55transport are started. 56.Pp 57The following options are available: 58.Bl -tag -width Ds 59.It Fl r 60Register the 61.Tn NFS 62service with 63.Xr rpcbind 8 64without creating any servers. 65This option can be used along with the 66.Fl u 67or 68.Fl t 69options to re-register NFS if the portmap server is restarted. 70.It Fl n 71Specifies how many server threads to create. 72The default is 4. 73A server should run enough threads to handle 74the maximum level of concurrency from its clients. 75.It Fl 4 76Only listen to IPv4 requests. 77By default 78.Nm 79listens to both IPv6 and IPv4 and tries to register for both. 80.It Fl 6 81Only listen to IPv6 requests. 82.It Fl t 83Serve only 84.Tn TCP NFS 85clients. 86By default 87.Nm 88serves both 89.Tn TCP NFS 90and 91.Tn UDP NFS 92clients 93.It Fl u 94Serve only 95.Tn UDP NFS 96clients. 97.El 98.Pp 99.Nm 100listens for service requests at the port indicated in the 101.Tn NFS 102server specification; see 103.%T "Network File System Protocol Specification" , 104RFC 1094 and 105.%T "NFS: Network File System Version 3 Protocol Specification" . 106.Sh EXIT STATUS 107.Ex -std nfsd 108.Sh EXAMPLES 109.Dq Li "nfsd -n 6" 110serves 111.Tn UDP 112and 113.Tn TCP 114transports using six threads. 115.Sh SEE ALSO 116.Xr nfsstat 1 , 117.Xr nfssvc 2 , 118.Xr mountd 8 , 119.Xr rpcbind 8 120.Sh HISTORY 121The 122.Nm 123utility first appeared in 124.Bx 4.4 . 125