lockd(1M) lockd(1M)
NAME
lockd - network lock daemon
SYNOPSIS
/usr/lib/nfs/lockd [-t timeout] [-g graceperiod]
DESCRIPTION
The lockd command processes lock requests that are either sent
locally by the kernel or remotely by another lock daemon.
lockd forwards lock requests for remote data to the server
site's lock daemon through RPC/XDR. lockd then requests the
status monitor daemon, statd(1M), for monitor service. The
reply to the lock request will not be sent to the kernel until
the status daemon and the server site's lock daemon have
replied.
If either the status monitor or server site's lock daemon is
unavailable, the reply to a lock request for remote data is
delayed until all daemons become available.
When a server recovers, it waits for a grace period for all
client-site lock daemons to submit reclaim requests. Client-
site lock daemons, on the other hand, are notified by the
status monitor daemon of the server recovery and promptly
resubmit previously granted lock requests. If a lock daemon
fails to secure a previously granted lock at the server site,
then it sends SIGLOST to a process.
USAGE
The lockd daemon is automatically invoked in run level 3.
The following options are available to the lockd command:
-t timeout
Use timeout seconds as the interval instead of the
default value (25 seconds) to retransmit lock request to
the remote server.
-g graceperiod
Use graceperiod seconds as the grace period duration
instead of the default value (25 seconds).
Only a privileged user can execute this command.
Copyright 1994 Novell, Inc. Page 1
lockd(1M) lockd(1M)
REFERENCES
fcntl(2), lockf(3C), nfsping(1M), signal(2), statd(1M)
Copyright 1994 Novell, Inc. Page 2