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path: root/fs/ocfs2/dlm/dlmdomain.c
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Diffstat (limited to 'fs/ocfs2/dlm/dlmdomain.c')
-rw-r--r--fs/ocfs2/dlm/dlmdomain.c70
1 files changed, 65 insertions, 5 deletions
diff --git a/fs/ocfs2/dlm/dlmdomain.c b/fs/ocfs2/dlm/dlmdomain.c
index 0879d86113e3..63f8125824e8 100644
--- a/fs/ocfs2/dlm/dlmdomain.c
+++ b/fs/ocfs2/dlm/dlmdomain.c
@@ -33,6 +33,7 @@
#include <linux/spinlock.h>
#include <linux/delay.h>
#include <linux/err.h>
+#include <linux/debugfs.h>
#include "cluster/heartbeat.h"
#include "cluster/nodemanager.h"
@@ -40,8 +41,8 @@
#include "dlmapi.h"
#include "dlmcommon.h"
-
#include "dlmdomain.h"
+#include "dlmdebug.h"
#include "dlmver.h"
@@ -298,6 +299,8 @@ static int dlm_wait_on_domain_helper(const char *domain)
static void dlm_free_ctxt_mem(struct dlm_ctxt *dlm)
{
+ dlm_destroy_debugfs_subroot(dlm);
+
if (dlm->lockres_hash)
dlm_free_pagevec((void **)dlm->lockres_hash, DLM_HASH_PAGES);
@@ -395,6 +398,7 @@ static void dlm_destroy_dlm_worker(struct dlm_ctxt *dlm)
static void dlm_complete_dlm_shutdown(struct dlm_ctxt *dlm)
{
dlm_unregister_domain_handlers(dlm);
+ dlm_debug_shutdown(dlm);
dlm_complete_thread(dlm);
dlm_complete_recovery_thread(dlm);
dlm_destroy_dlm_worker(dlm);
@@ -644,6 +648,7 @@ int dlm_shutting_down(struct dlm_ctxt *dlm)
void dlm_unregister_domain(struct dlm_ctxt *dlm)
{
int leave = 0;
+ struct dlm_lock_resource *res;
spin_lock(&dlm_domain_lock);
BUG_ON(dlm->dlm_state != DLM_CTXT_JOINED);
@@ -673,6 +678,15 @@ void dlm_unregister_domain(struct dlm_ctxt *dlm)
msleep(500);
mlog(0, "%s: more migration to do\n", dlm->name);
}
+
+ /* This list should be empty. If not, print remaining lockres */
+ if (!list_empty(&dlm->tracking_list)) {
+ mlog(ML_ERROR, "Following lockres' are still on the "
+ "tracking list:\n");
+ list_for_each_entry(res, &dlm->tracking_list, tracking)
+ dlm_print_one_lock_resource(res);
+ }
+
dlm_mark_domain_leaving(dlm);
dlm_leave_domain(dlm);
dlm_complete_dlm_shutdown(dlm);
@@ -1405,6 +1419,12 @@ static int dlm_join_domain(struct dlm_ctxt *dlm)
goto bail;
}
+ status = dlm_debug_init(dlm);
+ if (status < 0) {
+ mlog_errno(status);
+ goto bail;
+ }
+
status = dlm_launch_thread(dlm);
if (status < 0) {
mlog_errno(status);
@@ -1472,6 +1492,7 @@ bail:
if (status) {
dlm_unregister_domain_handlers(dlm);
+ dlm_debug_shutdown(dlm);
dlm_complete_thread(dlm);
dlm_complete_recovery_thread(dlm);
dlm_destroy_dlm_worker(dlm);
@@ -1484,6 +1505,7 @@ static struct dlm_ctxt *dlm_alloc_ctxt(const char *domain,
u32 key)
{
int i;
+ int ret;
struct dlm_ctxt *dlm = NULL;
dlm = kzalloc(sizeof(*dlm), GFP_KERNEL);
@@ -1516,6 +1538,15 @@ static struct dlm_ctxt *dlm_alloc_ctxt(const char *domain,
dlm->key = key;
dlm->node_num = o2nm_this_node();
+ ret = dlm_create_debugfs_subroot(dlm);
+ if (ret < 0) {
+ dlm_free_pagevec((void **)dlm->lockres_hash, DLM_HASH_PAGES);
+ kfree(dlm->name);
+ kfree(dlm);
+ dlm = NULL;
+ goto leave;
+ }
+
spin_lock_init(&dlm->spinlock);
spin_lock_init(&dlm->master_lock);
spin_lock_init(&dlm->ast_lock);
@@ -1526,6 +1557,7 @@ static struct dlm_ctxt *dlm_alloc_ctxt(const char *domain,
INIT_LIST_HEAD(&dlm->reco.node_data);
INIT_LIST_HEAD(&dlm->purge_list);
INIT_LIST_HEAD(&dlm->dlm_domain_handlers);
+ INIT_LIST_HEAD(&dlm->tracking_list);
dlm->reco.state = 0;
INIT_LIST_HEAD(&dlm->pending_asts);
@@ -1816,21 +1848,49 @@ static int __init dlm_init(void)
dlm_print_version();
status = dlm_init_mle_cache();
- if (status)
- return -1;
+ if (status) {
+ mlog(ML_ERROR, "Could not create o2dlm_mle slabcache\n");
+ goto error;
+ }
+
+ status = dlm_init_master_caches();
+ if (status) {
+ mlog(ML_ERROR, "Could not create o2dlm_lockres and "
+ "o2dlm_lockname slabcaches\n");
+ goto error;
+ }
+
+ status = dlm_init_lock_cache();
+ if (status) {
+ mlog(ML_ERROR, "Count not create o2dlm_lock slabcache\n");
+ goto error;
+ }
status = dlm_register_net_handlers();
if (status) {
- dlm_destroy_mle_cache();
- return -1;
+ mlog(ML_ERROR, "Unable to register network handlers\n");
+ goto error;
}
+ status = dlm_create_debugfs_root();
+ if (status)
+ goto error;
+
return 0;
+error:
+ dlm_unregister_net_handlers();
+ dlm_destroy_lock_cache();
+ dlm_destroy_master_caches();
+ dlm_destroy_mle_cache();
+ return -1;
}
static void __exit dlm_exit (void)
{
+ dlm_destroy_debugfs_root();
dlm_unregister_net_handlers();
+ dlm_destroy_lock_cache();
+ dlm_destroy_master_caches();
dlm_destroy_mle_cache();
}