(43182d2a) · Commits · 戴 / test

fs/ocfs2/cluster/heartbeat.c

+35 −0

Original line number	Diff line number	Diff line
		@@ -66,9 +66,12 @@ static DECLARE_WAIT_QUEUE_HEAD(o2hb_steady_queue);
		* In global heartbeat, we maintain a series of region bitmaps.
		* - o2hb_region_bitmap allows us to limit the region number to max region.
		* - o2hb_live_region_bitmap tracks live regions (seen steady iterations).
		* - o2hb_quorum_region_bitmap tracks live regions that have seen all nodes
		* heartbeat on it.
		*/
		static unsigned long o2hb_region_bitmap[BITS_TO_LONGS(O2NM_MAX_REGIONS)];
		static unsigned long o2hb_live_region_bitmap[BITS_TO_LONGS(O2NM_MAX_REGIONS)];
		static unsigned long o2hb_quorum_region_bitmap[BITS_TO_LONGS(O2NM_MAX_REGIONS)];

		#define O2HB_DB_TYPE_LIVENODES 0
		struct o2hb_debug_buf {
		@@ -607,6 +610,35 @@ static void o2hb_shutdown_slot(struct o2hb_disk_slot *slot)
		o2nm_node_put(node);
		}

		static void o2hb_set_quorum_device(struct o2hb_region *reg,
		struct o2hb_disk_slot *slot)
		{
		assert_spin_locked(&o2hb_live_lock);

		if (!o2hb_global_heartbeat_active())
		return;

		if (test_bit(reg->hr_region_num, o2hb_quorum_region_bitmap))
		return;

		/*
		* A region can be added to the quorum only when it sees all
		* live nodes heartbeat on it. In other words, the region has been
		* added to all nodes.
		*/
		if (memcmp(reg->hr_live_node_bitmap, o2hb_live_node_bitmap,
		sizeof(o2hb_live_node_bitmap)))
		return;

		if (slot->ds_changed_samples < O2HB_LIVE_THRESHOLD)
		return;

		printk(KERN_NOTICE "o2hb: Region %s is now a quorum device\n",
		config_item_name(&reg->hr_item));

		set_bit(reg->hr_region_num, o2hb_quorum_region_bitmap);
		}

		static int o2hb_check_slot(struct o2hb_region *reg,
		struct o2hb_disk_slot *slot)
		{
		@@ -772,6 +804,8 @@ fire_callbacks:
		slot->ds_equal_samples = 0;
		}
		out:
		o2hb_set_quorum_device(reg, slot);

		spin_unlock(&o2hb_live_lock);

		o2hb_run_event_list(&event);
		@@ -1138,6 +1172,7 @@ int o2hb_init(void)
		memset(o2hb_live_node_bitmap, 0, sizeof(o2hb_live_node_bitmap));
		memset(o2hb_region_bitmap, 0, sizeof(o2hb_region_bitmap));
		memset(o2hb_live_region_bitmap, 0, sizeof(o2hb_live_region_bitmap));
		memset(o2hb_quorum_region_bitmap, 0, sizeof(o2hb_quorum_region_bitmap));

		return o2hb_debug_init();
		}

Admin message