24 #include "heartbeat.h"
33  * The first heartbeat pass had one global thread that would serialize all hb
51  * In global heartbeat, we maintain a series of region bitmaps.
55  * 		heartbeat on it.
118  * on heartbeat. o2net and o2dlm are two entities that register this callback.
119  * However only o2dlm depends on the heartbeat. It does not want the heartbeat
125  * In global heartbeat mode, all regions are pinned if there are one or more
133  * In local heartbeat mode, we assume the dlm domain name to be the same as
137  * In global heartbeat mode, we pin/unpin all o2hb regions. This solution
293 	mlog(ML_ERROR, "Heartbeat write timeout to device %pg after %u "  in o2hb_write_timeout()
685 #define ERRSTR2		"Heartbeat generation mismatch on device"  in o2hb_check_own_slot()
686 #define ERRSTR3		"Heartbeat sequence mismatch on device"  in o2hb_check_own_slot()
863 	 * live nodes heartbeat on it. In other words, the region has been  in o2hb_set_quorum_device()
876 	 * If global heartbeat active, unpin all regions if the  in o2hb_set_quorum_device()
921 		 * a freshly formatted heartbeat area will not have a  in o2hb_check_slot()
946 	/* The node changed heartbeat generations. We assume this to  in o2hb_check_slot()
1004 		 * result in heartbeat calling a node dead when it  in o2hb_check_slot()
1123 	 * other node has been improperly configured to heartbeat in  in o2hb_do_disk_heartbeat()
1127 	/* fill in the proper info for our next heartbeat */  in o2hb_do_disk_heartbeat()
1177 			       "heartbeat on region %s (%pg)\n",  in o2hb_do_disk_heartbeat()
1221 		 * this should result in a heartbeat which is less  in o2hb_thread()
1481  * heartbeat configfs bits.  The heartbeat set is a default set under
1543 	/* Heartbeat and fs min / max block sizes are the same. */  in o2hb_read_block_input()
1774 	/* We can't heartbeat without having had our node number  in o2hb_region_dev_store()
1842 	 * during mounts. For global heartbeat, the threshold doubled for the  in o2hb_region_dev_store()
1900 		printk(KERN_NOTICE "o2hb: Heartbeat started on region %s (%pg)\n",  in o2hb_region_dev_store()
1952 /* heartbeat set */
2027 	/* this is the same way to generate msg key as dlm, for local heartbeat,  in o2hb_heartbeat_group_make_item()
2090 		printk(KERN_NOTICE "o2hb: Heartbeat %s on region %s (%pg)\n",  in o2hb_heartbeat_group_drop_item()
2112 	 * If global heartbeat active and there are dependent users,  in o2hb_heartbeat_group_drop_item()
2174 			printk(KERN_NOTICE "o2hb: Heartbeat mode set to %s\n",  in o2hb_heartbeat_group_mode_store()
2203 /* this is just here to avoid touching group in heartbeat.h which the
2214 	config_group_init_type_name(&hs->hs_group, "heartbeat",  in o2hb_alloc_hb_set()
2256  * In local heartbeat mode, region_uuid passed matches the dlm domain name.
2257  * In global heartbeat mode, region_uuid passed is NULL.
2276 		/* local heartbeat */  in o2hb_region_pin()
2309  * In local heartbeat mode, region_uuid passed matches the dlm domain name.
2310  * In global heartbeat mode, region_uuid passed is NULL.
2350 	/* local heartbeat */  in o2hb_region_inc_user()
2357 	 * if global heartbeat active and this is the first dependent user,  in o2hb_region_inc_user()
2377 	/* local heartbeat */  in o2hb_region_dec_user()
2384 	 * if global heartbeat active and there are no dependent users,  in o2hb_region_dec_user()
2504 	mlog(ML_ERROR, "stopping heartbeat on all active regions.\n");  in o2hb_stop_all_regions()