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ocfs2/cluster: Show per region heartbeat elapsed time

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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: Sunil Mushran <sunil.mushran@oracle.com>
This commit is contained in:
Sunil Mushran 2010-10-06 17:55:09 -07:00
parent d6aa1c7c9e
commit 43695d095d
1 changed files with 23 additions and 0 deletions
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23
fs/ocfs2/cluster/heartbeat.c
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@ -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;