ocfs2/cluster: Create debugfs files for live, quorum and failed region bitmaps
authorSunil Mushran <sunil.mushran@oracle.com>
Thu, 7 Oct 2010 00:55:13 +0000 (17:55 -0700)
committerSunil Mushran <sunil.mushran@oracle.com>
Thu, 7 Oct 2010 00:55:13 +0000 (17:55 -0700)
This patch prints the bitmaps of live, quorum and failed regions. This
information will be useful in debugging cluster issues.

Signed-off-by: Sunil Mushran <sunil.mushran@oracle.com>
fs/ocfs2/cluster/heartbeat.c

index f890656127faf4d0a2ba384d97395bcd50335eb5..b06b9e52fba8a65d21284ba47dcbe4346fa39693 100644 (file)
@@ -76,6 +76,9 @@ static unsigned long o2hb_quorum_region_bitmap[BITS_TO_LONGS(O2NM_MAX_REGIONS)];
 static unsigned long o2hb_failed_region_bitmap[BITS_TO_LONGS(O2NM_MAX_REGIONS)];
 
 #define O2HB_DB_TYPE_LIVENODES         0
+#define O2HB_DB_TYPE_LIVEREGIONS       1
+#define O2HB_DB_TYPE_QUORUMREGIONS     2
+#define O2HB_DB_TYPE_FAILEDREGIONS     3
 struct o2hb_debug_buf {
        int db_type;
        int db_size;
@@ -84,12 +87,21 @@ struct o2hb_debug_buf {
 };
 
 static struct o2hb_debug_buf *o2hb_db_livenodes;
+static struct o2hb_debug_buf *o2hb_db_liveregions;
+static struct o2hb_debug_buf *o2hb_db_quorumregions;
+static struct o2hb_debug_buf *o2hb_db_failedregions;
 
 #define O2HB_DEBUG_DIR                 "o2hb"
 #define O2HB_DEBUG_LIVENODES           "livenodes"
+#define O2HB_DEBUG_LIVEREGIONS         "live_regions"
+#define O2HB_DEBUG_QUORUMREGIONS       "quorum_regions"
+#define O2HB_DEBUG_FAILEDREGIONS       "failed_regions"
 
 static struct dentry *o2hb_debug_dir;
 static struct dentry *o2hb_debug_livenodes;
+static struct dentry *o2hb_debug_liveregions;
+static struct dentry *o2hb_debug_quorumregions;
+static struct dentry *o2hb_debug_failedregions;
 
 static LIST_HEAD(o2hb_all_regions);
 
@@ -1085,6 +1097,9 @@ static int o2hb_debug_open(struct inode *inode, struct file *file)
 
        switch (db->db_type) {
        case O2HB_DB_TYPE_LIVENODES:
+       case O2HB_DB_TYPE_LIVEREGIONS:
+       case O2HB_DB_TYPE_QUORUMREGIONS:
+       case O2HB_DB_TYPE_FAILEDREGIONS:
                spin_lock(&o2hb_live_lock);
                memcpy(map, db->db_data, db->db_size);
                spin_unlock(&o2hb_live_lock);
@@ -1146,6 +1161,12 @@ static const struct file_operations o2hb_debug_fops = {
 void o2hb_exit(void)
 {
        kfree(o2hb_db_livenodes);
+       kfree(o2hb_db_liveregions);
+       kfree(o2hb_db_quorumregions);
+       kfree(o2hb_db_failedregions);
+       debugfs_remove(o2hb_debug_failedregions);
+       debugfs_remove(o2hb_debug_quorumregions);
+       debugfs_remove(o2hb_debug_liveregions);
        debugfs_remove(o2hb_debug_livenodes);
        debugfs_remove(o2hb_debug_dir);
 }
@@ -1189,6 +1210,48 @@ static int o2hb_debug_init(void)
                mlog_errno(ret);
                goto bail;
        }
+
+       o2hb_debug_liveregions = o2hb_debug_create(O2HB_DEBUG_LIVEREGIONS,
+                                                  o2hb_debug_dir,
+                                                  &o2hb_db_liveregions,
+                                                  sizeof(*o2hb_db_liveregions),
+                                                  O2HB_DB_TYPE_LIVEREGIONS,
+                                                  sizeof(o2hb_live_region_bitmap),
+                                                  O2NM_MAX_REGIONS,
+                                                  o2hb_live_region_bitmap);
+       if (!o2hb_debug_liveregions) {
+               mlog_errno(ret);
+               goto bail;
+       }
+
+       o2hb_debug_quorumregions =
+                       o2hb_debug_create(O2HB_DEBUG_QUORUMREGIONS,
+                                         o2hb_debug_dir,
+                                         &o2hb_db_quorumregions,
+                                         sizeof(*o2hb_db_quorumregions),
+                                         O2HB_DB_TYPE_QUORUMREGIONS,
+                                         sizeof(o2hb_quorum_region_bitmap),
+                                         O2NM_MAX_REGIONS,
+                                         o2hb_quorum_region_bitmap);
+       if (!o2hb_debug_quorumregions) {
+               mlog_errno(ret);
+               goto bail;
+       }
+
+       o2hb_debug_failedregions =
+                       o2hb_debug_create(O2HB_DEBUG_FAILEDREGIONS,
+                                         o2hb_debug_dir,
+                                         &o2hb_db_failedregions,
+                                         sizeof(*o2hb_db_failedregions),
+                                         O2HB_DB_TYPE_FAILEDREGIONS,
+                                         sizeof(o2hb_failed_region_bitmap),
+                                         O2NM_MAX_REGIONS,
+                                         o2hb_failed_region_bitmap);
+       if (!o2hb_debug_failedregions) {
+               mlog_errno(ret);
+               goto bail;
+       }
+
        ret = 0;
 bail:
        if (ret)