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28 .\" @(#)mountd.8 8.4 (Berkeley) 4/28/95
44 .Op Ar exportsfile ...
48 utility is the server for
50 mount requests from other client machines.
51 It listens for service requests at the port indicated in the
53 server specification; see
54 .%T "Network File System Protocol Specification" ,
55 RFC1094, Appendix A and
56 .%T "NFS: Network File System Version 3 Protocol Specification" ,
59 The following options are available:
60 .Bl -tag -width indent
62 Allow the administrator to force clients to use only the
65 protocol to mount file systems from this server.
67 Output debugging information.
69 will not detach from the controlling terminal and will print
70 debugging messages to stderr.
72 The new NFS server that includes NFSv4 support is now the default, so this
73 option is now a no-op and should be considered deprecated.
75 Specify specific IP addresses to bind to for TCP and UDP requests.
76 This option may be specified multiple times.
83 Note that when specifying IP addresses with
86 will automatically add
88 and if IPv6 is enabled,
94 requests to be logged.
96 Allow non-root mount requests to be served.
97 This should only be specified if there are clients such as PC's,
99 It will automatically clear the vfs.[nfsrv|nfsd].nfs_privport sysctl flag, which
100 controls if the kernel will accept NFS requests from reserved ports only.
102 This flag forces the system to run the old NFS server, which does not
103 have NFSv4 support in it.
107 to bind to the specified port, for both
112 This is typically done to ensure that the port which
114 binds to is a known quantity which can be used in firewall rulesets.
117 cannot bind to this port, an appropriate error will be recorded in
118 the system log, and the daemon will then exit.
120 Allow mount RPCs requests for regular files to be served.
121 Although this seems to violate the mount protocol specification,
122 some diskless workstations do mount requests for
123 their swapfiles and expect them to be regular files.
124 Since a regular file cannot be specified in
126 the entire file system in which the swapfiles resides
127 will have to be exported with the
131 Specify an alternate location
132 for the exports file.
133 More than one exports file can be specified.
135 Tell mountd to suspend/resume execution of the nfsd threads whenever
136 the exports list is being reloaded.
137 This avoids intermittent access
138 errors for clients that do NFS RPCs while the exports are being
139 reloaded, but introduces a delay in RPC response while the reload
143 crashes while an exports load is in progress,
145 must be restarted to get the nfsd threads running again, if this
152 it loads the export host addresses and options into the kernel
156 After changing the exports file,
157 a hangup signal should be sent to the
160 to get it to reload the export information.
161 After sending the SIGHUP
162 (kill \-s HUP `cat /var/run/mountd.pid`),
163 check the syslog output to see if
166 errors in the exports file.
170 detects that the running kernel does not include
172 support, it will attempt to load a loadable kernel module containing
182 .Bl -tag -width /var/run/mountd.pid -compact
184 the list of exported file systems
185 .It Pa /var/run/mountd.pid
186 the pid of the currently running mountd
187 .It Pa /var/db/mountdtab
188 the current list of remote mounted file systems
201 utility first appeared in