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28 .\" @(#)nfsd.8 8.4 (Berkeley) 3/29/95
42 .Op Fl n Ar num_servers
47 utility runs on a server machine to service
49 requests from client machines.
52 must be running for a machine to operate as a server.
54 Unless otherwise specified, four servers for
56 transport are started.
58 The following options are available:
65 without creating any servers.
66 This option can be used along with the
70 options to re-register NFS if the rpcbind server is restarted.
76 without creating any servers.
78 Specifies how many servers to create.
80 Specifies which IP address or hostname to bind to on the local host.
81 This option is recommended when a host has multiple interfaces.
84 options may be specified.
86 Specifies that nfsd should bind to the wildcard IP address.
87 This is the default if no
90 It may also be specified in addition to any
93 Note that NFS/UDP does not operate properly when
94 bound to the wildcard IP address whether you use -a or do not use -h.
106 to try and start the experimental server that includes NFSv4 support in it.
107 If this flag isn't specified, the experimental server will only be started
108 if it is linked into the kernel and the regular one isn't.
110 ie. The kernel is built with the following:
111 .Bd -literal -offset indent -compact
118 .Dq Li "nfsd -u -t -n 6"
123 transports using six daemons.
125 A server should run enough daemons to handle
126 the maximum level of concurrency from its clients,
127 typically four to six.
131 utility listens for service requests at the port indicated in the
133 server specification; see
134 .%T "Network File System Protocol Specification" ,
136 .%T "NFS: Network File System Version 3 Protocol Specification" ,
138 .%T "Network File System (NFS) Version 4 Protocol" ,
145 is not loaded in the running kernel, it will attempt
146 to load a loadable kernel module containing
154 will exit with an error.
158 is to be run on a host with multiple interfaces or interface aliases, use
161 option is recommended.
162 If you do not use the option NFS may not respond to
163 UDP packets from the same IP address they were sent to.
165 is also recommended when securing NFS exports on a firewalling machine such
166 that the NFS sockets can only be accessed by the inside interface.
170 would then be used to block nfs-related packets that come in on the outside
175 utility has to be terminated with
177 and cannot be killed with
183 utility needs to ignore these signals in order to stay alive as long
184 as possible during a shutdown, otherwise loopback mounts will
185 not be able to unmount.
189 .Dq Li "kill -USR1 <PID of master nfsd>"
198 .Xr stablerestart 5 ,
209 utility first appeared in
216 is not running, it will service AUTH_SYS requests only. To fix the problem
219 and then restart it, after the