NAME
rpc.nfsd - NFS server process
SYNOPSIS
/usr/sbin/rpc.nfsd [options] nproc
DESCRIPTION
The rpc.nfsd program implements the user level part of the NFS service. The main functionality is handled by the nfsd kernel module. The user space program merely specifies what sort of sockets the kernel service should listen on, what NFS versions it should support, and how many kernel threads it should use. The rpc.mountd server provides an ancillary service needed to satisfy mount requests by NFS clients.
OPTIONS
-d or --debug
enable logging of debugging messages
-H or --host hostname
specify a particular hostname (or address) that NFS requests
will be accepted on. By default, rpc.nfsd will accept NFS
requests on all known network addresses. Note that lockd (which
performs file locking services for NFS) may still accept request
on all known network addresses. This may change in future
releases of the Linux Kernel.
-p or --port port
specify a different port to listen on for NFS requests. By
default, rpc.nfsd will listen on port 2049.
-N or --no-nfs-version vers
This option can be used to request that rpc.nfsd does not offer
certain versions of NFS. The current version of rpc.nfsd can
support NFS versions 2,3,4 and the newer version 4.1.
-s or --syslog
By default, rpc.nfsd logs error messages (and debug messages, if
enabled) to stderr. This option makes rpc.nfsd log these
messages to syslog instead. Note that errors encountered during
option processing will still be logged to stderr regardless of
this option.
-T or --no-tcp
Disable rpc.nfsd from accepting TCP connections from clients.
-U or --no-udp
Disable rpc.nfsd from accepting UDP connections from clients.
-V or --nfs-version vers
This option can be used to request that rpc.nfsd offer certain
versions of NFS. The current version of rpc.nfsd can support NFS
versions 2,3,4 and the newer version 4.1.
nproc specify the number of NFS server threads. By default, just one
thread is started. However, for optimum performance several
threads should be used. The actual figure depends on the number
of and the work load created by the NFS clients, but a useful
starting point is 8 threads. Effects of modifying that number
can be checked using the nfsstat(8) program.
Note that if the NFS server is already running, then the options for
specifying host, port, and protocol will be ignored. The number of
processes given will be the only option considered, and the number of
active nfsd processes will be increased or decreased to match this
number. In particular rpc.nfsd 0 will stop all threads and thus close
any open connections.
NOTES
If the program is built with TI-RPC support, it will enable any protocol and address family combinations that are marked visible in the netconfig database.
SEE ALSO
nfsd(7), rpc.mountd(8), exports(5), exportfs(8), rpc.rquotad(8), nfsstat(8), netconfig(5).
AUTHOR
Olaf Kirch, Bill Hawes, H. J. Lu, G. Allan Morris III, and a host of
others.
7 Aug 2006 rpc.nfsd(8)
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