Hi, When using command "service nfslock stop" and "service nfsklock start" to restart the nfslock service at RHEL with kernel 2.6.31, if start the service after stop it more than the grace_period time, lock which lockd get before cann't be reclaimed for the grace_period is timeout. So, IMO, the lockd should get into grace_period when statd start not stop? Some code at kernel: fs/lockd/svclock.c .... 411 if (locks_in_grace() && !reclaim) { 412 ret = nlm_lck_denied_grace_period; 413 goto out; 414 } 415 if (reclaim && !locks_in_grace()) { 416 ret = nlm_lck_denied_grace_period; 417 goto out; 418 } .... I think it can implement it like that: 1) When statd stop, it send a KILL signal to lockd, and lockd only release the lock, but don't get into grace_period. 2) When statd start, it send one some other signal to lockd, and lockd only get into grace_period. The lock will be reclaimed. thanks, Mi Jinlong -- To unsubscribe from this list: send the line "unsubscribe linux-nfs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html