Проект OpenNet: MAN nfsd (8) Команды системного администрирования (FreeBSD и Linux)

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nfsd (8)

nfsd (1) ( Solaris man: Команды и прикладные программы пользовательского уровня )

nfsd (1) ( Русские man: Команды и прикладные программы пользовательского уровня )

nfsd (7) ( Linux man: Макропакеты и соглашения )

>> nfsd (8) ( FreeBSD man: Команды системного администрирования )

nfsd (8) ( Linux man: Команды системного администрирования )

BSD mandoc

NAME



nfsd

 - remote

NFS

server

SYNOPSIS

[-ardut ] [-n num_servers ] [-h bindip ]

DESCRIPTION

The utility runs on a server machine to service NFS requests from client machines. At least one must be running for a machine to operate as a server.

Unless otherwise specified, four servers for UDP transport are started.

The following options are available:

-r: Register the NFS service with rpcbind(8) without creating any servers. This option can be used along with the -u or -t options to re-register NFS if the rpcbind server is restarted.
-d: Unregister the NFS service with rpcbind(8) without creating any servers.
-n: Specifies how many servers to create.
-h bindip: Specifies which IP address or hostname to bind to on the local host. This option is recommended when a host has multiple interfaces. Multiple -h options may be specified.
-a: Specifies that nfsd should bind to the wildcard IP address. This is the default if no -h options are given. It may also be specified in addition to any -h options given. Note that NFS/UDP does not operate properly when bound to the wildcard IP address whether you use -a or do not use -h.
-t: Serve TCP NFS clients.
-u: Serve UDP NFS clients.

For example, ``nfsd -u -t -n 6 '' serves UDP and TCP transports using six daemons.

A server should run enough daemons to handle the maximum level of concurrency from its clients, typically four to six.

The utility listens for service requests at the port indicated in the NFS server specification; see "Network File System Protocol Specification" , RFC1094 and "NFS: Network File System Version 3 Protocol Specification" .

If detects that NFS is not loaded in the running kernel, it will attempt to load a loadable kernel module containing NFS support using kldload(2). If this fails, or no NFS KLD is available, will exit with an error.

If is to be run on a host with multiple interfaces or interface aliases, use of the -h option is recommended. If you do not use the option NFS may not respond to UDP packets from the same IP address they were sent to. Use of this option is also recommended when securing NFS exports on a firewalling machine such that the NFS sockets can only be accessed by the inside interface. The ipfw utility would then be used to block nfs-related packets that come in on the outside interface.

The utility has to be terminated with SIGUSR1 and cannot be killed with SIGTERM or SIGQUIT The utility needs to ignore these signals in order to stay alive as long as possible during a shutdown, otherwise loopback mounts will not be able to unmount. If you have to kill just do a ``kill -USR1 <PID of master nfsd> ''