1.\" Copyright (c) 1989, 1991, 1993 2.\" The Regents of the University of California. All rights reserved. 3.\" 4.\" Redistribution and use in source and binary forms, with or without 5.\" modification, are permitted provided that the following conditions 6.\" are met: 7.\" 1. Redistributions of source code must retain the above copyright 8.\" notice, this list of conditions and the following disclaimer. 9.\" 2. Redistributions in binary form must reproduce the above copyright 10.\" notice, this list of conditions and the following disclaimer in the 11.\" documentation and/or other materials provided with the distribution. 12.\" 3. All advertising materials mentioning features or use of this software 13.\" must display the following acknowledgement: 14.\" This product includes software developed by the University of 15.\" California, Berkeley and its contributors. 16.\" 4. Neither the name of the University nor the names of its contributors 17.\" may be used to endorse or promote products derived from this software 18.\" without specific prior written permission. 19.\" 20.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 21.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 24.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 25.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30.\" SUCH DAMAGE. 31.\" 32.\" @(#)nfsd.8 8.3 (Berkeley) 2/22/94 33.\" 34.Dd February 22, 1994 35.Dt NFSD 8 36.Os 37.Sh NAME 38.Nm nfsd 39.Nd remote 40.Tn NFS 41server 42.Sh SYNOPSIS 43.Nm nfsd 44.Op Fl rut 45.Op Fl n Ar num_servers 46.Sh DESCRIPTION 47.Nm Nfsd 48runs on a server machine to service 49.Tn NFS 50requests from client machines. 51At least one 52.Nm nfsd 53must be running for a machine to operate as a server. 54.Pp 55Unless otherwise specified, four servers for 56.Tn UDP 57transport are started. 58.Pp 59The following options are available: 60.Bl -tag -width Ds 61.It Fl r 62Register the 63.Tn NFS 64service with 65.Xr portmap 8 66without creating any servers. 67This option can be used along with the 68.Fl u 69or 70.Fl t 71options to re-register NFS if the portmap server is restarted. 72.It Fl n 73Specifies how many servers to create. 74.It Fl t 75Serve 76.Tn TCP NFS 77clients. 78.It Fl u 79Serve 80.Tn UDP NFS 81clients. 82.El 83.Pp 84For example, 85.Dq Li "nfsd -u -t 6" 86serves 87.Tn UDP 88and 89.Tn TCP 90transports using six daemons. 91.Pp 92A server should run enough daemons to handle 93the maximum level of concurrency from its clients, 94typically four to six. 95.Pp 96.Nm Nfsd 97listens for service requests at the port indicated in the 98.Tn NFS 99server specification; see 100.%T "Network File System Protocol Specification" , 101RFC1094. 102.Pp 103If 104.Nm nfsd 105detects that 106.Tn NFS 107is not loaded in the running kernel, it will attempt 108to load a loadable kernel module containing 109.Tn NFS 110support using 111.Xr modload 8 112by way of 113.Xr vfsload 3 . 114If this fails, or no 115.Tn NFS 116LKM is available, 117.Nm nfsd 118will exit with an error. 119.Pp 120The 121.Nm nfsd 122utility exits 0 on success, and >0 if an error occurs. 123.Sh SEE ALSO 124.Xr nfsstat 1 , 125.Xr nfssvc 2 , 126.Xr modload 8 , 127.Xr mountd 8 , 128.Xr portmap 8 129.Sh HISTORY 130The 131.Nm nfsd 132utility first appeared in 4.4BSD. 133