[Ocfs2-devel] [PATCH 17/20] ocfs2/cluster: Create debugfs files for live, quorum and failed region bitmaps
Sunil Mushran
sunil.mushran at oracle.com
Tue Sep 14 15:50:53 PDT 2010
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 at oracle.com>
---
fs/ocfs2/cluster/heartbeat.c | 63 ++++++++++++++++++++++++++++++++++++++++++
1 files changed, 63 insertions(+), 0 deletions(-)
diff --git a/fs/ocfs2/cluster/heartbeat.c b/fs/ocfs2/cluster/heartbeat.c
index 6be817b..6885a22 100644
--- a/fs/ocfs2/cluster/heartbeat.c
+++ b/fs/ocfs2/cluster/heartbeat.c
@@ -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)
--
1.7.0.4
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