28 void dlm_slot_save(struct dlm_ls *ls, struct dlm_rcom *rc,  in dlm_slot_save()  argument
40 void dlm_slots_copy_out(struct dlm_ls *ls, struct dlm_rcom *rc)  in dlm_slots_copy_out()  argument
50 	for (i = 0; i < ls->ls_slots_size; i++) {  in dlm_slots_copy_out()
51 		slot = &ls->ls_slots[i];  in dlm_slots_copy_out()
62 static void log_slots(struct dlm_ls *ls, uint32_t gen, int num_slots,  in log_slots()  argument
94 	log_rinfo(ls, "generation %u slots %d%s", gen, num_slots, line);  in log_slots()
97 int dlm_slots_copy_in(struct dlm_ls *ls)  in dlm_slots_copy_in()  argument
100 	struct dlm_rcom *rc = ls->ls_recover_buf;  in dlm_slots_copy_in()
111 	if (gen <= ls->ls_generation) {  in dlm_slots_copy_in()
112 		log_error(ls, "dlm_slots_copy_in gen %u old %u",  in dlm_slots_copy_in()
113 			  gen, ls->ls_generation);  in dlm_slots_copy_in()
115 	ls->ls_generation = gen;  in dlm_slots_copy_in()
123 	log_slots(ls, gen, num_slots, ro0, NULL, 0);  in dlm_slots_copy_in()
125 	list_for_each_entry(memb, &ls->ls_nodes, list) {  in dlm_slots_copy_in()
135 			if (ls->ls_slot && ls->ls_slot != memb->slot) {  in dlm_slots_copy_in()
136 				log_error(ls, "dlm_slots_copy_in our slot "  in dlm_slots_copy_in()
137 					  "changed %d %d", ls->ls_slot,  in dlm_slots_copy_in()
142 			if (!ls->ls_slot)  in dlm_slots_copy_in()
143 				ls->ls_slot = memb->slot;  in dlm_slots_copy_in()
147 			log_error(ls, "dlm_slots_copy_in nodeid %d no slot",  in dlm_slots_copy_in()
160 int dlm_slots_assign(struct dlm_ls *ls, int *num_slots, int *slots_size,  in dlm_slots_assign()  argument
174 	list_for_each_entry(memb, &ls->ls_nodes, list) {  in dlm_slots_assign()
176 			memb->slot = ls->ls_slot;  in dlm_slots_assign()
177 			memb->generation = ls->ls_generation;  in dlm_slots_assign()
182 	list_for_each_entry(memb, &ls->ls_nodes, list) {  in dlm_slots_assign()
206 			log_error(ls, "nodeid %d slot changed %d %d",  in dlm_slots_assign()
222 	list_for_each_entry(memb, &ls->ls_nodes, list) {  in dlm_slots_assign()
227 			log_error(ls, "invalid slot number %d", memb->slot);  in dlm_slots_assign()
239 	list_for_each_entry(memb, &ls->ls_nodes, list) {  in dlm_slots_assign()
253 			if (!ls->ls_slot && memb->nodeid == our_nodeid)  in dlm_slots_assign()
254 				ls->ls_slot = memb->slot;  in dlm_slots_assign()
259 			log_error(ls, "no free slot found");  in dlm_slots_assign()
267 	log_slots(ls, gen, num, NULL, array, array_size);  in dlm_slots_assign()
273 		log_error(ls, "num_slots %d exceeds max_slots %d",  in dlm_slots_assign()
286 static void add_ordered_member(struct dlm_ls *ls, struct dlm_member *new)  in add_ordered_member()  argument
291 	struct list_head *head = &ls->ls_nodes;  in add_ordered_member()
325 static int dlm_add_member(struct dlm_ls *ls, struct dlm_config_node *node)  in dlm_add_member()  argument
344 	add_ordered_member(ls, memb);  in dlm_add_member()
345 	ls->ls_num_nodes++;  in dlm_add_member()
360 int dlm_is_member(struct dlm_ls *ls, int nodeid)  in dlm_is_member()  argument
362 	if (find_memb(&ls->ls_nodes, nodeid))  in dlm_is_member()
367 int dlm_is_removed(struct dlm_ls *ls, int nodeid)  in dlm_is_removed()  argument
369 	if (find_memb(&ls->ls_nodes_gone, nodeid))  in dlm_is_removed()
396 void dlm_clear_members(struct dlm_ls *ls)  in dlm_clear_members()  argument
398 	clear_memb_list(&ls->ls_nodes, remove_remote_member);  in dlm_clear_members()
399 	ls->ls_num_nodes = 0;  in dlm_clear_members()
402 void dlm_clear_members_gone(struct dlm_ls *ls)  in dlm_clear_members_gone()  argument
404 	clear_memb_list(&ls->ls_nodes_gone, NULL);  in dlm_clear_members_gone()
407 static void make_member_array(struct dlm_ls *ls)  in make_member_array()  argument
412 	kfree(ls->ls_node_array);  in make_member_array()
413 	ls->ls_node_array = NULL;  in make_member_array()
415 	list_for_each_entry(memb, &ls->ls_nodes, list) {  in make_member_array()
423 		total = ls->ls_num_nodes;  in make_member_array()
427 	ls->ls_total_weight = total;  in make_member_array()
432 	list_for_each_entry(memb, &ls->ls_nodes, list) {  in make_member_array()
447 	ls->ls_node_array = array;  in make_member_array()
452 static int ping_members(struct dlm_ls *ls, uint64_t seq)  in ping_members()  argument
457 	list_for_each_entry(memb, &ls->ls_nodes, list) {  in ping_members()
458 		if (dlm_recovery_stopped(ls)) {  in ping_members()
462 		error = dlm_rcom_status(ls, memb->nodeid, 0, seq);  in ping_members()
467 		log_rinfo(ls, "ping_members aborted %d last nodeid %d",  in ping_members()
468 			  error, ls->ls_recover_nodeid);  in ping_members()
472 static void dlm_lsop_recover_prep(struct dlm_ls *ls)  in dlm_lsop_recover_prep()  argument
474 	if (!ls->ls_ops || !ls->ls_ops->recover_prep)  in dlm_lsop_recover_prep()
476 	ls->ls_ops->recover_prep(ls->ls_ops_arg);  in dlm_lsop_recover_prep()
479 static void dlm_lsop_recover_slot(struct dlm_ls *ls, struct dlm_member *memb)  in dlm_lsop_recover_slot()  argument
485 	if (!ls->ls_ops || !ls->ls_ops->recover_slot)  in dlm_lsop_recover_slot()
502 	ls->ls_ops->recover_slot(ls->ls_ops_arg, &slot);  in dlm_lsop_recover_slot()
505 void dlm_lsop_recover_done(struct dlm_ls *ls)  in dlm_lsop_recover_done()  argument
511 	if (!ls->ls_ops || !ls->ls_ops->recover_done)  in dlm_lsop_recover_done()
514 	num = ls->ls_num_nodes;  in dlm_lsop_recover_done()
520 	list_for_each_entry(memb, &ls->ls_nodes, list) {  in dlm_lsop_recover_done()
522 			log_error(ls, "dlm_lsop_recover_done bad num %d", num);  in dlm_lsop_recover_done()
530 	ls->ls_ops->recover_done(ls->ls_ops_arg, slots, num,  in dlm_lsop_recover_done()
531 				 ls->ls_slot, ls->ls_generation);  in dlm_lsop_recover_done()
548 int dlm_recover_members(struct dlm_ls *ls, struct dlm_recover *rv, int *neg_out)  in dlm_recover_members()  argument
561 	list_for_each_entry(memb, &ls->ls_nodes_gone, list) {  in dlm_recover_members()
562 		log_rinfo(ls, "prev removed member %d", memb->nodeid);  in dlm_recover_members()
568 	list_for_each_entry_safe(memb, safe, &ls->ls_nodes, list) {  in dlm_recover_members()
574 			log_rinfo(ls, "remove member %d", memb->nodeid);  in dlm_recover_members()
577 			log_rinfo(ls, "remove member %d comm_seq %u %u",  in dlm_recover_members()
582 		list_move(&memb->list, &ls->ls_nodes_gone);  in dlm_recover_members()
584 		ls->ls_num_nodes--;  in dlm_recover_members()
585 		dlm_lsop_recover_slot(ls, memb);  in dlm_recover_members()
592 		if (dlm_is_member(ls, node->nodeid))  in dlm_recover_members()
594 		error = dlm_add_member(ls, node);  in dlm_recover_members()
598 		log_rinfo(ls, "add member %d", node->nodeid);  in dlm_recover_members()
601 	list_for_each_entry(memb, &ls->ls_nodes, list) {  in dlm_recover_members()
605 	ls->ls_low_nodeid = low;  in dlm_recover_members()
607 	make_member_array(ls);  in dlm_recover_members()
610 	error = ping_members(ls, rv->seq);  in dlm_recover_members()
611 	log_rinfo(ls, "dlm_recover_members %d nodes", ls->ls_num_nodes);  in dlm_recover_members()
618 int dlm_ls_stop(struct dlm_ls *ls)  in dlm_ls_stop()  argument
633 	down_write(&ls->ls_recv_active);  in dlm_ls_stop()
641 	spin_lock(&ls->ls_recover_lock);  in dlm_ls_stop()
642 	set_bit(LSFL_RECOVER_STOP, &ls->ls_flags);  in dlm_ls_stop()
643 	new = test_and_clear_bit(LSFL_RUNNING, &ls->ls_flags);  in dlm_ls_stop()
644 	ls->ls_recover_seq++;  in dlm_ls_stop()
645 	spin_unlock(&ls->ls_recover_lock);  in dlm_ls_stop()
652 	up_write(&ls->ls_recv_active);  in dlm_ls_stop()
663 		set_bit(LSFL_RECOVER_DOWN, &ls->ls_flags);  in dlm_ls_stop()
664 		wake_up_process(ls->ls_recoverd_task);  in dlm_ls_stop()
665 		wait_event(ls->ls_recover_lock_wait,  in dlm_ls_stop()
666 			   test_bit(LSFL_RECOVER_LOCK, &ls->ls_flags));  in dlm_ls_stop()
675 	dlm_recoverd_suspend(ls);  in dlm_ls_stop()
677 	spin_lock(&ls->ls_recover_lock);  in dlm_ls_stop()
678 	kfree(ls->ls_slots);  in dlm_ls_stop()
679 	ls->ls_slots = NULL;  in dlm_ls_stop()
680 	ls->ls_num_slots = 0;  in dlm_ls_stop()
681 	ls->ls_slots_size = 0;  in dlm_ls_stop()
682 	ls->ls_recover_status = 0;  in dlm_ls_stop()
683 	spin_unlock(&ls->ls_recover_lock);  in dlm_ls_stop()
685 	dlm_recoverd_resume(ls);  in dlm_ls_stop()
687 	if (!ls->ls_recover_begin)  in dlm_ls_stop()
688 		ls->ls_recover_begin = jiffies;  in dlm_ls_stop()
698 		dlm_lsop_recover_prep(ls);  in dlm_ls_stop()
703 int dlm_ls_start(struct dlm_ls *ls)  in dlm_ls_start()  argument
713 	error = dlm_config_nodes(ls->ls_name, &nodes, &count);  in dlm_ls_start()
717 	spin_lock(&ls->ls_recover_lock);  in dlm_ls_start()
721 	if (!dlm_locking_stopped(ls)) {  in dlm_ls_start()
722 		spin_unlock(&ls->ls_recover_lock);  in dlm_ls_start()
723 		log_error(ls, "start ignored: lockspace running");  in dlm_ls_start()
730 	rv->seq = ++ls->ls_recover_seq;  in dlm_ls_start()
731 	rv_old = ls->ls_recover_args;  in dlm_ls_start()
732 	ls->ls_recover_args = rv;  in dlm_ls_start()
733 	spin_unlock(&ls->ls_recover_lock);  in dlm_ls_start()
736 		log_error(ls, "unused recovery %llx %d",  in dlm_ls_start()
742 	set_bit(LSFL_RECOVER_WORK, &ls->ls_flags);  in dlm_ls_start()
743 	wake_up_process(ls->ls_recoverd_task);  in dlm_ls_start()