rpc.nfsd(8) manual page
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rpc.nfsd - NFS server process
/usr/sbin/rpc.nfsd [options]
nproc
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.
- -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.
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.
rpc.mountd(8)
, exports(5)
, exportfs(8)
, rpc.rquotad(8)
, nfsstat(8)
,
netconfig(5)
.
Olaf Kirch, Bill Hawes, H. J. Lu, G. Allan Morris III,
and a host of others.
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