You can specify a time limit, or grace period, for clients to reclaim NFS V4 or NLM locks and share reservations when the z/OS NFS server restarts after a failure. To set this time limit, use the leasetime site attribute. For details, see Site attributes syntax.

During the reclaim grace period after a z/OS NFS server restart, the grace period may be extended after an open or lock reclaim event. If the leasetime site attribute is greater than 1200 seconds (20 minutes), the grace period will not be extended at a reclaim event; if the leasetimesite attribute is less than 20 minutes, the grace period will be extended to one lease time after the reclaim event, up to but not exceeding 20 minutes after the z/OS NFS server completed its restart.