rpc.nfsd(8)                                                   System Manager's Manual                                                  rpc.nfsd(8)

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 diferent 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
              both NFS version 2,3 and the newer version 4.

       -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.

       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

       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)