LOCKD(1M-SysV)      RISC/os Reference Manual       LOCKD(1M-SysV)



NAME
     lockd - network lock daemon

SYNOPSIS
     /etc/rpc.lockd [ -t timeout ] [ -g graceperiod ]

DESCRIPTION
     lockd 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 the rpc(4)/ xdr(3N) package.  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 lockds to submit reclaim requests.  Client site
     lockds, on the other hand, are notified by the statd of the
     server recovery and promptly resubmit previously granted
     lock requests.  If a lockd fails to secure a previously
     granted lock at the server site, the lockd sends SIGLOST to
     a process.

OPTIONS
     -t timeout
               lockd uses timeout (seconds) as the interval
               instead of the default value (15 seconds) to
               retransmit lock request to the remote server.

     -g graceperiod
               lockd uses graceperiod (seconds) as the grace
               period duration instead of the default value (45
               seconds).

CONFIGURATION
     A lock daemon will always be started at system boot time if
     NFS is configured into the kernel.  If the configuration
     file /etc/lockd.conf is present, the first line is used to
     pass arguments which lockd(1M) needs at boottime.
     /etc/lockd.conf.sample is a sample configuration file.

FILES
     /etc/lockd.conf
     /etc/lockd.conf.sample

SEE ALSO
     statd(1M).



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LOCKD(1M-SysV)      RISC/os Reference Manual       LOCKD(1M-SysV)



     fcntl(2), lockf(3), signal(3C) in the Programmer's Reference
     Manual.

ORIGIN
     Sun Microsystems, NFS 4.0.


















































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