RPC.LOCKD(8) OpenBSD System Manager's Manual RPC.LOCKD(8)NAMErpc.lockd - NFS file locking daemon
SYNOPSISrpc.lockd [-d [debug_level]] [-g grace_period]
DESCRIPTIONrpc.lockd is a daemon which provides file- and record-locking services in
an NFS environment.
The options are as follows:
-d [debug_level]
Write debugging information to syslog, recording all RPC
transactions to the daemon. These messages are logged with level
LOG_DEBUG and facility LOG_DAEMON. If debug_level is not
specified, level 1 is assumed, giving one log line per protocol
operation. Higher debug levels can be specified, causing display
of operation arguments and internal operations of the daemon.
-g grace_period
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.
The 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 daemon must NOT be invoked by inetd(8) because the protocol
assumes that the daemon will run from system start time. Instead, it
should be run from rc(8) after the network has been started.
FILES
/usr/include/rpcsvc/nlm_prot.x RPC protocol specification for the
network lock manager protocol.
SEE ALSOsyslog(3), rc(8)STANDARDS
The implementation is based on the specification in X/Open CAE
Specification C218, "Protocols for X/Open PC Interworking: XNFS, Issue
4", ISBN 1 872630 66 9
BUGS
The current implementation provides only the server side of the protocol
(i.e., clients running other OS types can establish locks on an OpenBSD
fileserver, but there is currently no means for an OpenBSD client to
establish locks).
The current implementation serialises lock requests that could be shared.
OpenBSD 4.9 June 13, 2008 OpenBSD 4.9
