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

NAME
       rpc.mountd - NFS	mount daemon

SYNOPSIS
       /usr/sbin/rpc.mountd [options]

DESCRIPTION
       The  rpc.mountd program implements the NFS mount	protocol. When receiv-
       ing a MOUNT request from	an NFS client, it checks the  request  against
       the list	of currently exported file systems. If the client is permitted
       to mount	the file system, rpc.mountd obtains  a	file  handle  for  re-
       quested directory and returns it	to the client.

   Exporting NFS File Systems
       Making file systems available to	NFS clients is called exporting.

       Usually,	a file system and the hosts it should be made available	to are
       listed in the /etc/exports file,	and invoking exportfs -a whenever  the
       system  is  booted.  The	 exportfs(8)  command makes export information
       available to both the kernel NFS	server module and the rpc.mountd  dae-
       mon.

       Alternatively,  you can export individual directories temporarily using
       exportfs's host:/directory syntax.

   The rmtab File
       For every mount request received	from an	NFS client, rpc.mountd adds an
       entry  to  the  /var/lib/nfs/rmtab  file. When receiving	an unmount re-
       quest, that entry is removed.  user level part of the NFS service.

       However,	this file is mostly ornamental.	One, the client	 can  continue
       to  use	the file handle	even after calling rpc.mountd 's UMOUNT	proce-
       dure. And two, if a client reboots without  notifying  rpc.mountd  ,  a
       stale entry will	remain in rmtab.

OPTIONS
       -d kind	or  --debug kind
	      Turn on debugging	for kind.

       -F  or  --foreground
	      Run in foreground	(do not	daemonize)

       -f  or  --exports-file
	      This option specifies the	exports	file, listing the clients that
	      this server is prepared to serve and parameters to apply to each
	      such  mount (see exports(5)).  By	default, export	information is
	      read from	/etc/exports.

       -h  or  --help
	      Display usage message.

       -o num  or  --descriptors num
	      Set the limit of the number of open file descriptors to num. The
	      default is 256.

       -N  or  --no-nfs-version
	      This  option can be used to request that rpc.mountd do not offer
	      certain versions of NFS. The current version of  rpc.mountd  can
	      support  both  NFS version 2 and the newer version 3. If the NFS
	      kernel module was	compiled without support for NFSv3, rpc.mountd
	      must be invoked with the option --no-nfs-version 3 .

       -n  or  --no-tcp
	      Don't advertise TCP for mount.

       -P     Ignored (compatibility with unfsd??).

       -p  or  --port num
	      Force  rpc.mountd	 to bind to the	specified port num, instead of
	      using the	random port number assigned by the portmapper.

       -V  or  --nfs-version
	      This option can be used to request that rpc.mountd offer certain
	      versions	of  NFS. The current version of	rpc.mountd can support
	      both NFS version 2 and the newer version 3.

       -v  or  --version
	      Print the	version	of rpc.mountd and exit.

TCP_WRAPPERS SUPPORT
       This rpc.mountd version is protected by the  tcp_wrapper	 library.  You
       have to give the	clients	access to rpc.mountd if	they should be allowed
       to use it. To allow connects from clients of the	 .bar.com  domain  you
       could use the following line in /etc/hosts.allow:

       mountd: .bar.com

       You have	to use the daemon name mountd for the daemon name (even	if the
       binary has a different name).

       For further information please have a look at the tcpd(8) and hosts_ac-
       cess(5) manual pages.

SEE ALSO
       rpc.nfsd(8), exportfs(8), exports(5), rpc.rquotad(8).

FILES
       /etc/exports, /var/lib/nfs/xtab.

AUTHOR
       Olaf Kirch, H. J. Lu, G.	Allan Morris III, and a	host of	others.

				  25 Aug 2000			 rpc.mountd(8)

NAME | SYNOPSIS | DESCRIPTION | OPTIONS | TCP_WRAPPERS SUPPORT | SEE ALSO | FILES | AUTHOR

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