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.\" From: @(#)nfsiod.8 8.2 (Berkeley) 2/22/94 33.\" $FreeBSD$ 34.\" 35.Dd September 22, 1994 36.Dt NFSIOD 8 37.Os 38.Sh NAME 39.Nm nfsiod 40.Nd local 41.Tn NFS 42asynchronous I/O server 43.Sh SYNOPSIS 44.Nm 45.Op Fl n Ar num_servers 46.Sh DESCRIPTION 47.Nm Nfsiod 48runs on an 49.Tn NFS 50client machine to service asynchronous I/O requests to its server. 51It improves performance but is not required for correct operation. 52.Pp 53Unless otherwise specified, a single server is started. 54.Pp 55The options are as follows: 56.Bl -tag -width indent 57.It Fl n 58Specify how many servers are to be started. 59.El 60.Pp 61A client should run enough daemons to handle its maximum 62level of concurrency, typically four to six. 63.Pp 64If 65.Nm 66detects that the running kernel does not include 67.Tn NFS 68support, it will attempt to load a loadable kernel module containing 69.Tn NFS 70code, using 71.Xr kldload 8 72by way of 73.Xr vfsload 3 . 74If this fails, or no 75.Tn NFS 76KLD was available, 77.Nm 78exits with an error. 79.Sh DIAGNOSTICS 80.Ex -std 81.Sh SEE ALSO 82.Xr nfsstat 1 , 83.Xr nfssvc 2 , 84.Xr kldload 8 , 85.Xr mountd 8 , 86.Xr nfsd 8 , 87.Xr rpcbind 8 88.Sh HISTORY 89The 90.Nm 91utility first appeared in 92.Bx 4.4 . 93