NAME

lockd - network lock daemon

SYNOPSIS

/usr/lib/nfs/lockd [ -g graceperiod ] [ -t timeout ]

AVAILABILITY

SUNWcsu

DESCRIPTION

lockd is part of the NFS lock manager, which supports record locking operations on NFS files. See fcntl(2TSOL) and lockf(3C). The lock manager provides two functions:

it forwards fcntl(2TSOL) locking requests for NFS mounted file systems to the lock manager on the NFS server

it generates local file locking operations in response to requests forwarded from lock managers running on NFS client machines.

State information kept by the lock manager about these locking requests can be lost if the lockd is killed or the operating system is rebooted. Some of this information can be recovered as follows. When the server lock manager restarts, it waits for a grace period for all client-site lock managers to submit reclaim requests. Client-site lock managers, on the other hand are notified by the status monitor daemon, statd(1MTSOL), of the restart and promptly resubmit previously granted lock requests.

OPTIONS

-g graceperiod

graceperiod is the number of seconds that clients have to reclaim locks after the server reboots. The default is 45 seconds.

-t timeout

timeout is the number of seconds to wait before retransmitting a lock request to the remote server. The default value is 15 seconds.

SUMMARY OF TRUSTED

lockd must be started with a UID of 0 ,a sensisitivy label of ADMIN_LOW, and a clearance of ADMIN_HIGH. It must be started from the Trusted Path and must have these privileges: net_mac_read, net_privaddr, net_upgrade_sl, proc_nofloat, and sys_nfs.

SOLARIS CHANGES

SEE ALSO

statd(1MTSOL), fcntl(2TSOL), lockf(3C)