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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.
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.
FreeBSD 5.4 September 24, 1995 FreeBSD 5.4
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