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41 .Nd NFS file locking daemon
44 .Op Fl d Ar debug_level
45 .Op Fl g Ar grace period
50 utility provides monitored and unmonitored file and record locking services
51 in an NFS environment.
52 To monitor the status of hosts requesting locks,
53 the locking daemon typically operates in conjunction
57 Options and operands available for
59 .Bl -tag -width indent
63 option causes debugging information to be written to syslog, recording
64 all RPC transactions to the daemon.
65 These messages are logged with level
72 in the generation of one log line per protocol operation.
74 debug levels can be specified, causing display of operation arguments
75 and internal operations of the daemon.
79 option allow to specify the
82 During the grace period
84 only accepts requests from hosts which are reinitialising locks which
85 existed before the server restart.
86 Default is 30 seconds.
90 option allow to force the daemon to bind to the specified
92 for both AF_INET and AF_INET6 address families.
95 Error conditions are logged to syslog, irrespective of the debug level,
103 utility must NOT be invoked by
105 because the protocol assumes that the daemon will run from system start time.
106 Instead, it should be configured in
108 to run at system startup.
110 .Bl -tag -width /usr/include/rpcsvc/nlm_prot.x -compact
111 .It Pa /usr/include/rpcsvc/nlm_prot.x
112 RPC protocol specification for the network lock manager protocol.
119 The implementation is based on the specification in
121 .%B "X/Open CAE Specification C218"
122 .%T "Protocols for X/Open PC Interworking: XNFS, Issue 4"
123 .%O ISBN 1 872630 66 9
132 The current implementation serialises locks requests that could be shared.