rpc.lockd man page on OpenDarwin

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RPC.LOCKD(8)		  BSD System Manager's Manual		  RPC.LOCKD(8)

NAME
     rpc.lockd — NFS file locking daemon

SYNOPSIS
     rpc.lockd [-d debug_level] [-g grace period]

DESCRIPTION
     The rpc.lockd utility provides monitored and unmonitored file and record
     locking services in an NFS environment.  To monitor the status of hosts
     requesting locks, the locking daemon typically operates in conjunction
     with rpc.statd(8).

     Options and operands available for rpc.lockd:

     -d	     The -d option causes debugging information to be written to sys‐
	     log, recording all RPC transactions to the daemon.	 These mes‐
	     sages are logged with level LOG_DEBUG and facility LOG_DAEMON.
	     Specifying a debug_level of 1 results in the generation of one
	     log line per protocol operation.  Higher debug levels can be
	     specified, causing display of operation arguments and internal
	     operations of the daemon.

     -g	     The -g option allow to specify the grace period, in seconds.
	     During the grace period rpc.lockd only accepts requests from
	     hosts which are reinitialising locks which existed before the
	     server restart.  Default is 30 seconds.

     -w	     The -w option tells rpc.lockd to wait until the first client
	     locking request is made before starting the locking daemon(s).
	     This may be used on NFS clients to defer starting the NFS locking
	     daemons until it is known that they will be needed.  (Note:
	     rpc.statd(8) will also be started if it isn't already running)

     Error conditions are logged to syslog, irrespective of the debug level,
     using log level LOG_ERR and facility LOG_DAEMON.

     The rpc.lockd utility must NOT be invoked by inetd(8) because the proto‐
     col assumes that the daemon will run from system start time.  Instead, it
     should be configured in rc.conf(5) to run at system startup.

FILES
     /usr/include/rpcsvc/nlm_prot.x  RPC protocol specification for the net‐
				     work lock manager protocol.

SEE ALSO
     syslog(3), rc.conf(5), rpc.statd(8)

BUGS
     The current implementation serialises locks requests that could be
     shared.

STANDARDS
     The implementation is based on the specification in "Protocols for X/Open
     PC Interworking: XNFS, Issue 4", X/Open CAE Specification C218, ISBN 1
     872630 66 9.

HISTORY
     A version of rpc.lockd appeared in SunOS 4.

BSD			      September 24, 1995			   BSD
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