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rpc.lockd(8) System Manager's Manual rpc.lockd(8) NAME rpc.lockd, lockd - Network lock daemon SYNOPSIS /usr/sbin/rpc.lockd [ -t timeout ] [ -g graceperiod ] FLAGS Causes the rpc.lockd daemon to use the variable timeout (in seconds) as the interval instead of the default value of 5 seconds to retransmit a lock request to the remote server. Causes the rpc.lockd daemon to use the variable graceperiod (in seconds) as the grace period duration in- stead of the default value of 15 seconds. DESCRIPTION The rpc.lockd daemon processes lock requests that are either sent lo- cally by the kernel or remotely by another lock daemon. The NFS lock- ing service makes this advisory locking support possible by using the fcntl system call and the lockf subroutine. The rpc.lockd daemon for- wards lock requests for remote data to the server site's lock daemon. The rpc.lockd daemon then requests the status monitor daemon, rpc.statd, for monitor service. The reply to the lock request is not 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 unavail- able, 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 are notified by rpc.statd of the server recovery and promptly resubmit pre- viously granted lock requests. If a client site's lock daemon fails to secure previously granted locks at the server site, it sends the signal SIGLOST to all the processes that were previously holding locks and cannot reclaim them. RELATED INFORMATION Commands: fcntl(2), lockf(3), rpc.statd(8), signal(2) delim off rpc.lockd(8)