Maintenance Commands                                     nfsd(1M)

NAME
     nfsd - NFS daemon

SYNOPSIS
     /usr/lib/nfs/nfsd [ -a ]  [ -c #_conn ]  [ -l listen_backlog
     ]  [ -p protocol ]  [ -t device ]  [ nservers ]

DESCRIPTION
     nfsd is the daemon that handles client file system requests.
     Only the super-user can run this daemon.

     The nfsd daemon is automatically invoked in run level 3 with
     the  -a option.

     By default nfsd will start over the tcp and udp transports.

     A previously invoked nfsd daemon  started  with  or  without
     options  must  be  stopped before invoking another nfsd com-
     mand.

OPTIONS
     The following options are supported:

     -a    Start a NFS daemon over all  available  connectionless
           and  connection-oriented transports, including udp and
           tcp.

     -c #_conn
           This sets the maximum number of connections allowed to
           the
            NFS server over connection-oriented  transports.   By
           default, the number of connections is unlimited.

     -l    Set connection queue length for the  NFS  TCP  over  a
           connection-oriented transport. The default value is 32
           entries.

     -p protocol
           Start a NFS daemon over the specified protocol.

     -t device
           Start a NFS daemon for the transport specified by  the
           given device.

OPERANDS
     The following operands are supported:

     nservers
           This  sets  the  maximum  number  of  concurrent   NFS
           requests  that the server can handle. This concurrency
           is achieved by  up  to  nservers  threads  created  as
           needed  in the kernel. nservers should be based on the

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Maintenance Commands                                     nfsd(1M)

           load expected on this server. 16 is the  usual  number
           of nservers. If nservers is not specified, the maximum
           number of concurrent
            NFS requests will default to 1.

USAGE
     If  the  NFS_PORTMON  variable  is  set,  then  clients  are
     required  to  use privileged ports (ports < IPPORT_RESERVED)
     in order to get NFS services. This variable is equal to zero
     by  default.  This  variable  has  been moved from the "nfs"
     module to the "nfssrv" module. To set the variable, edit the
     /etc/system file and add this entry:

          set nfssrv:nfs_portmon = 1

EXIT STATUS
     0     Daemon started successfully.

     1     Daemon failed to start.

FILES
     .nfsXXX
            client machine pointer to an open-but-unlinked file

     /etc/init.d/nfs.server
           shell script for starting nfsd

     /etc/system
           system configuration information file

ATTRIBUTES
     See attributes(5) for descriptions of the  following  attri-
     butes:

     ____________________________________________________________
    |       ATTRIBUTE TYPE        |       ATTRIBUTE VALUE       |
    |_____________________________|_____________________________|
    | Availability                | SUNWcsu                     |
    |_____________________________|_____________________________|

SEE ALSO
     ps(1), mountd(1M), sharetab(4), system(4), attributes(5)

     System Administration Guide, Volume 3

NOTES
     1. The  NFS service uses kernel threads to  process  all  of
        the  NFS requests.  Currently, system utilization associ-
        ated with these threads is not charged to the  nfsd  pro-
        cess.  Therefore,  ps(1) can report 0 cpu time associated

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Maintenance Commands                                     nfsd(1M)

        with the NFS daemon, even though NFS processing is taking
        place on the server.

     2. Manually starting and restarting nfsd is not recommended.
        If  it  is  necessary  to  do  so,  use  the  NFS  server
        start/stop script  (/etc/init.d/nfs.server).  See  System
        Administration Guide, Volume 3 for more information.

SunOS 5.8           Last change: 26 Jan 1996                    3