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Commit 43695d09 authored by Sunil Mushran's avatar Sunil Mushran
Browse files 


ocfs2/cluster: Show per region heartbeat elapsed time

This patch adds a per region debugfs file that shows the elapsed time
since the time the o2hb timer was last armed.

Signed-off-by: default avatarSunil Mushran <sunil.mushran@oracle.com>
parent d6aa1c7c

fs/ocfs2/cluster/heartbeat.c

+23 −0
Original line number Diff line number Diff line
@@ -81,6 +81,7 @@ static unsigned long o2hb_failed_region_bitmap[BITS_TO_LONGS(O2NM_MAX_REGIONS)]; 
#define O2HB_DB_TYPE_FAILEDREGIONS	3

#define O2HB_DB_TYPE_REGION_LIVENODES	4

#define O2HB_DB_TYPE_REGION_NUMBER	5

#define O2HB_DB_TYPE_REGION_ELAPSED_TIME	6

struct o2hb_debug_buf {

	int db_type;

	int db_size;
@@ -99,6 +100,7 @@ static struct o2hb_debug_buf *o2hb_db_failedregions; 
#define O2HB_DEBUG_QUORUMREGIONS	"quorum_regions"

#define O2HB_DEBUG_FAILEDREGIONS	"failed_regions"

#define O2HB_DEBUG_REGION_NUMBER	"num"

#define O2HB_DEBUG_REGION_ELAPSED_TIME	"elapsed_time_in_ms"



static struct dentry *o2hb_debug_dir;

static struct dentry *o2hb_debug_livenodes;
@@ -209,8 +211,10 @@ struct o2hb_region { 
	struct dentry		*hr_debug_dir;

	struct dentry		*hr_debug_livenodes;

	struct dentry		*hr_debug_regnum;

	struct dentry		*hr_debug_elapsed_time;

	struct o2hb_debug_buf	*hr_db_livenodes;

	struct o2hb_debug_buf	*hr_db_regnum;

	struct o2hb_debug_buf	*hr_db_elapsed_time;



	/* let the person setting up hb wait for it to return until it

	 * has reached a 'steady' state.  This will be fixed when we have
@@ -1132,6 +1136,13 @@ static int o2hb_debug_open(struct inode *inode, struct file *file) 
				reg->hr_region_num);

		goto done;



	case O2HB_DB_TYPE_REGION_ELAPSED_TIME:

		reg = (struct o2hb_region *)db->db_data;

		out += snprintf(buf + out, PAGE_SIZE - out, "%u\n",

				jiffies_to_msecs(jiffies -

						 reg->hr_last_timeout_start));

		goto done;



	default:

		goto done;

	}
@@ -1925,6 +1936,18 @@ static int o2hb_debug_region_init(struct o2hb_region *reg, struct dentry *dir) 
		goto bail;

	}



	reg->hr_debug_elapsed_time =

			o2hb_debug_create(O2HB_DEBUG_REGION_ELAPSED_TIME,

					  reg->hr_debug_dir,

					  &(reg->hr_db_elapsed_time),

					  sizeof(*(reg->hr_db_elapsed_time)),

					  O2HB_DB_TYPE_REGION_ELAPSED_TIME,

					  0, 0, reg);

	if (!reg->hr_debug_elapsed_time) {

		mlog_errno(ret);

		goto bail;

	}



	ret = 0;

bail:

	return ret;