4 .\" Copyright (C) 1999 Olaf Kirch <okir@monad.swb.de>
5 .TH rpc.mountd 8 "25 Aug 2000"
7 rpc.mountd \- NFS mount daemon
9 .BI "/usr/sbin/rpc.mountd [" options "]"
13 program implements the NFS mount protocol. When receiving a MOUNT
14 request from an NFS client, it checks the request against the list of
15 currently exported file systems. If the client is permitted to mount
18 obtains a file handle for requested directory and returns it to
20 .SS Exporting NFS File Systems
21 Making file systems available to NFS clients is called
24 Usually, a file system and the hosts it should be made available to
29 whenever the system is booted. The
31 command makes export information available to both the kernel NFS
36 Alternatively, you can export individual directories temporarily
42 For every mount request received from an NFS client,
46 file. When receiving an unmount request, that entry is removed.
48 However, this file is mostly ornamental. One, the client can continue
49 to use the file handle even after calling
51 UMOUNT procedure. And two, if a client reboots without notifying
53 a stale entry will remain in
57 .B \-d kind " or " \-\-debug kind
58 Turn on debugging. Valid kinds are: all, auth, call, general and parse.
60 .B \-F " or " \-\-foreground
61 Run in foreground (do not daemonize)
63 .B \-f " or " \-\-exports-file
64 This option specifies the exports file, listing the clients that this
65 server is prepared to serve and parameters to apply to each
68 By default, export information is read from
71 .B \-h " or " \-\-help
72 Display usage message.
74 .B \-o num " or " \-\-descriptors num
75 Set the limit of the number of open file descriptors to num. The
76 default is to leave the limit unchanged.
78 .B \-N " or " \-\-no-nfs-version
79 This option can be used to request that
81 do not offer certain versions of NFS. The current version of
83 can support both NFS version 2 and the newer version 3. If the
84 NFS kernel module was compiled without support for NFSv3,
86 must be invoked with the option
87 .B "\-\-no-nfs-version 3" .
89 .B \-n " or " \-\-no-tcp
90 Don't advertise TCP for mount.
93 Ignored (compatibility with unfsd??).
95 .B \-p " or " \-\-port num
98 to bind to the specified port num, instead of using the random port
99 number assigned by the portmapper.
101 .B \-V " or " \-\-nfs-version
102 This option can be used to request that
104 offer certain versions of NFS. The current version of
106 can support both NFS version 2 and the newer version 3.
108 .B \-v " or " \-\-version
113 .SH TCP_WRAPPERS SUPPORT
116 version is protected by the
118 library. You have to give the clients access to
120 if they should be allowed to use it. To allow connects from clients of
121 the .bar.com domain you could use the following line in /etc/hosts.allow:
125 You have to use the daemon name
127 for the daemon name (even if the binary has a different name).
129 For further information please have a look at the
142 .BR /var/lib/nfs/xtab .
144 Olaf Kirch, H. J. Lu, G. Allan Morris III, and a host of others.