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rpc.nfsd(8)                                                        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 ver-
       sions 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 net-
              work  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 ver-
              sions  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)

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