29 void dlm_slot_save(struct dlm_ls *ls, struct dlm_rcom *rc,  in dlm_slot_save()  argument
41 void dlm_slots_copy_out(struct dlm_ls *ls, struct dlm_rcom *rc)  in dlm_slots_copy_out()  argument
51 	for (i = 0; i < ls->ls_slots_size; i++) {  in dlm_slots_copy_out()
52 		slot = &ls->ls_slots[i];  in dlm_slots_copy_out()
63 static void log_slots(struct dlm_ls *ls, uint32_t gen, int num_slots,  in log_slots()  argument
95 	log_rinfo(ls, "generation %u slots %d%s", gen, num_slots, line);  in log_slots()
98 int dlm_slots_copy_in(struct dlm_ls *ls)  in dlm_slots_copy_in()  argument
101 	struct dlm_rcom *rc = ls->ls_recover_buf;  in dlm_slots_copy_in()
112 	if (gen <= ls->ls_generation) {  in dlm_slots_copy_in()
113 		log_error(ls, "dlm_slots_copy_in gen %u old %u",  in dlm_slots_copy_in()
114 			  gen, ls->ls_generation);  in dlm_slots_copy_in()
116 	ls->ls_generation = gen;  in dlm_slots_copy_in()
129 	log_slots(ls, gen, num_slots, ro0, NULL, 0);  in dlm_slots_copy_in()
131 	list_for_each_entry(memb, &ls->ls_nodes, list) {  in dlm_slots_copy_in()
141 			if (ls->ls_slot && ls->ls_slot != memb->slot) {  in dlm_slots_copy_in()
142 				log_error(ls, "dlm_slots_copy_in our slot "  in dlm_slots_copy_in()
143 					  "changed %d %d", ls->ls_slot,  in dlm_slots_copy_in()
148 			if (!ls->ls_slot)  in dlm_slots_copy_in()
149 				ls->ls_slot = memb->slot;  in dlm_slots_copy_in()
153 			log_error(ls, "dlm_slots_copy_in nodeid %d no slot",  in dlm_slots_copy_in()
166 int dlm_slots_assign(struct dlm_ls *ls, int *num_slots, int *slots_size,  in dlm_slots_assign()  argument
180 	list_for_each_entry(memb, &ls->ls_nodes, list) {  in dlm_slots_assign()
182 			memb->slot = ls->ls_slot;  in dlm_slots_assign()
183 			memb->generation = ls->ls_generation;  in dlm_slots_assign()
188 	list_for_each_entry(memb, &ls->ls_nodes, list) {  in dlm_slots_assign()
212 			log_error(ls, "nodeid %d slot changed %d %d",  in dlm_slots_assign()
229 	list_for_each_entry(memb, &ls->ls_nodes, list) {  in dlm_slots_assign()
234 			log_error(ls, "invalid slot number %d", memb->slot);  in dlm_slots_assign()
246 	list_for_each_entry(memb, &ls->ls_nodes, list) {  in dlm_slots_assign()
260 			if (!ls->ls_slot && memb->nodeid == our_nodeid)  in dlm_slots_assign()
261 				ls->ls_slot = memb->slot;  in dlm_slots_assign()
266 			log_error(ls, "no free slot found");  in dlm_slots_assign()
274 	log_slots(ls, gen, num, NULL, array, array_size);  in dlm_slots_assign()
280 		log_error(ls, "num_slots %d exceeds max_slots %d",  in dlm_slots_assign()
293 static void add_ordered_member(struct dlm_ls *ls, struct dlm_member *new)  in add_ordered_member()  argument
298 	struct list_head *head = &ls->ls_nodes;  in add_ordered_member()
317 static int dlm_add_member(struct dlm_ls *ls, struct dlm_config_node *node)  in dlm_add_member()  argument
335 	add_ordered_member(ls, memb);  in dlm_add_member()
336 	ls->ls_num_nodes++;  in dlm_add_member()
351 int dlm_is_member(struct dlm_ls *ls, int nodeid)  in dlm_is_member()  argument
353 	if (find_memb(&ls->ls_nodes, nodeid))  in dlm_is_member()
358 int dlm_is_removed(struct dlm_ls *ls, int nodeid)  in dlm_is_removed()  argument
360 	if (find_memb(&ls->ls_nodes_gone, nodeid))  in dlm_is_removed()
376 void dlm_clear_members(struct dlm_ls *ls)  in dlm_clear_members()  argument
378 	clear_memb_list(&ls->ls_nodes);  in dlm_clear_members()
379 	ls->ls_num_nodes = 0;  in dlm_clear_members()
382 void dlm_clear_members_gone(struct dlm_ls *ls)  in dlm_clear_members_gone()  argument
384 	clear_memb_list(&ls->ls_nodes_gone);  in dlm_clear_members_gone()
387 static void make_member_array(struct dlm_ls *ls)  in make_member_array()  argument
392 	kfree(ls->ls_node_array);  in make_member_array()
393 	ls->ls_node_array = NULL;  in make_member_array()
395 	list_for_each_entry(memb, &ls->ls_nodes, list) {  in make_member_array()
403 		total = ls->ls_num_nodes;  in make_member_array()
407 	ls->ls_total_weight = total;  in make_member_array()
413 	list_for_each_entry(memb, &ls->ls_nodes, list) {  in make_member_array()
428 	ls->ls_node_array = array;  in make_member_array()
433 static int ping_members(struct dlm_ls *ls)  in ping_members()  argument
438 	list_for_each_entry(memb, &ls->ls_nodes, list) {  in ping_members()
439 		error = dlm_recovery_stopped(ls);  in ping_members()
442 		error = dlm_rcom_status(ls, memb->nodeid, 0);  in ping_members()
447 		log_rinfo(ls, "ping_members aborted %d last nodeid %d",  in ping_members()
448 			  error, ls->ls_recover_nodeid);  in ping_members()
452 static void dlm_lsop_recover_prep(struct dlm_ls *ls)  in dlm_lsop_recover_prep()  argument
454 	if (!ls->ls_ops || !ls->ls_ops->recover_prep)  in dlm_lsop_recover_prep()
456 	ls->ls_ops->recover_prep(ls->ls_ops_arg);  in dlm_lsop_recover_prep()
459 static void dlm_lsop_recover_slot(struct dlm_ls *ls, struct dlm_member *memb)  in dlm_lsop_recover_slot()  argument
465 	if (!ls->ls_ops || !ls->ls_ops->recover_slot)  in dlm_lsop_recover_slot()
482 	ls->ls_ops->recover_slot(ls->ls_ops_arg, &slot);  in dlm_lsop_recover_slot()
485 void dlm_lsop_recover_done(struct dlm_ls *ls)  in dlm_lsop_recover_done()  argument
491 	if (!ls->ls_ops || !ls->ls_ops->recover_done)  in dlm_lsop_recover_done()
494 	num = ls->ls_num_nodes;  in dlm_lsop_recover_done()
501 	list_for_each_entry(memb, &ls->ls_nodes, list) {  in dlm_lsop_recover_done()
503 			log_error(ls, "dlm_lsop_recover_done bad num %d", num);  in dlm_lsop_recover_done()
511 	ls->ls_ops->recover_done(ls->ls_ops_arg, slots, num,  in dlm_lsop_recover_done()
512 				 ls->ls_slot, ls->ls_generation);  in dlm_lsop_recover_done()
529 int dlm_recover_members(struct dlm_ls *ls, struct dlm_recover *rv, int *neg_out)  in dlm_recover_members()  argument
538 	list_for_each_entry(memb, &ls->ls_nodes_gone, list) {  in dlm_recover_members()
539 		log_rinfo(ls, "prev removed member %d", memb->nodeid);  in dlm_recover_members()
545 	list_for_each_entry_safe(memb, safe, &ls->ls_nodes, list) {  in dlm_recover_members()
551 			log_rinfo(ls, "remove member %d", memb->nodeid);  in dlm_recover_members()
554 			log_rinfo(ls, "remove member %d comm_seq %u %u",  in dlm_recover_members()
559 		list_move(&memb->list, &ls->ls_nodes_gone);  in dlm_recover_members()
560 		ls->ls_num_nodes--;  in dlm_recover_members()
561 		dlm_lsop_recover_slot(ls, memb);  in dlm_recover_members()
568 		if (dlm_is_member(ls, node->nodeid))  in dlm_recover_members()
570 		dlm_add_member(ls, node);  in dlm_recover_members()
571 		log_rinfo(ls, "add member %d", node->nodeid);  in dlm_recover_members()
574 	list_for_each_entry(memb, &ls->ls_nodes, list) {  in dlm_recover_members()
578 	ls->ls_low_nodeid = low;  in dlm_recover_members()
580 	make_member_array(ls);  in dlm_recover_members()
583 	error = ping_members(ls);  in dlm_recover_members()
587 		ls->ls_members_result = error;  in dlm_recover_members()
588 		complete(&ls->ls_members_done);  in dlm_recover_members()
591 	log_rinfo(ls, "dlm_recover_members %d nodes", ls->ls_num_nodes);  in dlm_recover_members()
598 int dlm_ls_stop(struct dlm_ls *ls)  in dlm_ls_stop()  argument
613 	down_write(&ls->ls_recv_active);  in dlm_ls_stop()
621 	spin_lock(&ls->ls_recover_lock);  in dlm_ls_stop()
622 	set_bit(LSFL_RECOVER_STOP, &ls->ls_flags);  in dlm_ls_stop()
623 	new = test_and_clear_bit(LSFL_RUNNING, &ls->ls_flags);  in dlm_ls_stop()
624 	ls->ls_recover_seq++;  in dlm_ls_stop()
625 	spin_unlock(&ls->ls_recover_lock);  in dlm_ls_stop()
632 	up_write(&ls->ls_recv_active);  in dlm_ls_stop()
643 		set_bit(LSFL_RECOVER_DOWN, &ls->ls_flags);  in dlm_ls_stop()
644 		wake_up_process(ls->ls_recoverd_task);  in dlm_ls_stop()
645 		wait_event(ls->ls_recover_lock_wait,  in dlm_ls_stop()
646 			   test_bit(LSFL_RECOVER_LOCK, &ls->ls_flags));  in dlm_ls_stop()
655 	dlm_recoverd_suspend(ls);  in dlm_ls_stop()
657 	spin_lock(&ls->ls_recover_lock);  in dlm_ls_stop()
658 	kfree(ls->ls_slots);  in dlm_ls_stop()
659 	ls->ls_slots = NULL;  in dlm_ls_stop()
660 	ls->ls_num_slots = 0;  in dlm_ls_stop()
661 	ls->ls_slots_size = 0;  in dlm_ls_stop()
662 	ls->ls_recover_status = 0;  in dlm_ls_stop()
663 	spin_unlock(&ls->ls_recover_lock);  in dlm_ls_stop()
665 	dlm_recoverd_resume(ls);  in dlm_ls_stop()
667 	if (!ls->ls_recover_begin)  in dlm_ls_stop()
668 		ls->ls_recover_begin = jiffies;  in dlm_ls_stop()
670 	dlm_lsop_recover_prep(ls);  in dlm_ls_stop()
674 int dlm_ls_start(struct dlm_ls *ls)  in dlm_ls_start()  argument
684 	error = dlm_config_nodes(ls->ls_name, &nodes, &count);  in dlm_ls_start()
688 	spin_lock(&ls->ls_recover_lock);  in dlm_ls_start()
692 	if (!dlm_locking_stopped(ls)) {  in dlm_ls_start()
693 		spin_unlock(&ls->ls_recover_lock);  in dlm_ls_start()
694 		log_error(ls, "start ignored: lockspace running");  in dlm_ls_start()
701 	rv->seq = ++ls->ls_recover_seq;  in dlm_ls_start()
702 	rv_old = ls->ls_recover_args;  in dlm_ls_start()
703 	ls->ls_recover_args = rv;  in dlm_ls_start()
704 	spin_unlock(&ls->ls_recover_lock);  in dlm_ls_start()
707 		log_error(ls, "unused recovery %llx %d",  in dlm_ls_start()
713 	set_bit(LSFL_RECOVER_WORK, &ls->ls_flags);  in dlm_ls_start()
714 	wake_up_process(ls->ls_recoverd_task);  in dlm_ls_start()