ocfs2/dlm: Clean up messages in o2dlm

o2dlm messages needed a facelift.

Signed-off-by: Sunil Mushran <sunil.mushran@oracle.com>

5 files changed, 71 insertions, 70 deletions

diff --git a/fs/ocfs2/dlm/dlmdomain.c b/fs/ocfs2/dlm/dlmdomain.c
index 6ed6b95dcf9..ce225fb0cea 100644
--- a/fs/ocfs2/dlm/dlmdomain.c
+++ b/fs/ocfs2/dlm/dlmdomain.c
@@ -539,17 +539,17 @@ again:
 
 static void __dlm_print_nodes(struct dlm_ctxt *dlm)
 {
-        int node = -1;
+        int node = -1, num = 0;
 
         assert_spin_locked(&dlm->spinlock);
 
-        printk(KERN_NOTICE "o2dlm: Nodes in domain %s: ", dlm->name);
-
+        printk("( ");
         while ((node = find_next_bit(dlm->domain_map, O2NM_MAX_NODES,
                                      node + 1)) < O2NM_MAX_NODES) {
                 printk("%d ", node);
+                ++num;
         }
-        printk("\n");
+        printk(") %u nodes\n", num);
 }
 
 static int dlm_exit_domain_handler(struct o2net_msg *msg, u32 len, void *data,
@@ -566,11 +566,10 @@ static int dlm_exit_domain_handler(struct o2net_msg *msg, u32 len, void *data,
 
         node = exit_msg->node_idx;
 
-        printk(KERN_NOTICE "o2dlm: Node %u leaves domain %s\n", node, dlm->name);
-
         spin_lock(&dlm->spinlock);
         clear_bit(node, dlm->domain_map);
         clear_bit(node, dlm->exit_domain_map);
+        printk(KERN_NOTICE "o2dlm: Node %u leaves domain %s ", node, dlm->name);
         __dlm_print_nodes(dlm);
 
         /* notify anything attached to the heartbeat events */
@@ -755,6 +754,7 @@ void dlm_unregister_domain(struct dlm_ctxt *dlm)
 
                 dlm_mark_domain_leaving(dlm);
                 dlm_leave_domain(dlm);
+                printk(KERN_NOTICE "o2dlm: Leaving domain %s\n", dlm->name);
                 dlm_force_free_mles(dlm);
                 dlm_complete_dlm_shutdown(dlm);
         }
@@ -970,7 +970,7 @@ static int dlm_assert_joined_handler(struct o2net_msg *msg, u32 len, void *data,
                 clear_bit(assert->node_idx, dlm->exit_domain_map);
                 __dlm_set_joining_node(dlm, DLM_LOCK_RES_OWNER_UNKNOWN);
 
-                printk(KERN_NOTICE "o2dlm: Node %u joins domain %s\n",
+                printk(KERN_NOTICE "o2dlm: Node %u joins domain %s ",
                        assert->node_idx, dlm->name);
                 __dlm_print_nodes(dlm);
 
@@ -1701,8 +1701,10 @@ static int dlm_try_to_join_domain(struct dlm_ctxt *dlm)
 bail:
         spin_lock(&dlm->spinlock);
         __dlm_set_joining_node(dlm, DLM_LOCK_RES_OWNER_UNKNOWN);
-        if (!status)
+        if (!status) {
+                printk(KERN_NOTICE "o2dlm: Joining domain %s ", dlm->name);
                 __dlm_print_nodes(dlm);
+        }
         spin_unlock(&dlm->spinlock);
 
         if (ctxt) {
diff --git a/fs/ocfs2/dlm/dlmlock.c b/fs/ocfs2/dlm/dlmlock.c
index 8d39e0fd66f..c7f3e22bda1 100644
--- a/fs/ocfs2/dlm/dlmlock.c
+++ b/fs/ocfs2/dlm/dlmlock.c
@@ -319,27 +319,23 @@ static enum dlm_status dlm_send_remote_lock_request(struct dlm_ctxt *dlm,
         tmpret = o2net_send_message(DLM_CREATE_LOCK_MSG, dlm->key, &create,
                                     sizeof(create), res->owner, &status);
         if (tmpret >= 0) {
-                // successfully sent and received
-                ret = status;  // this is already a dlm_status
+                ret = status;
                 if (ret == DLM_REJECTED) {
-                        mlog(ML_ERROR, "%s:%.*s: BUG.  this is a stale lockres "
-                             "no longer owned by %u.  that node is coming back "
-                             "up currently.\n", dlm->name, create.namelen,
+                        mlog(ML_ERROR, "%s: res %.*s, Stale lockres no longer "
+                             "owned by node %u. That node is coming back up "
+                             "currently.\n", dlm->name, create.namelen,
                              create.name, res->owner);
                         dlm_print_one_lock_resource(res);
                         BUG();
                 }
         } else {
-                mlog(ML_ERROR, "Error %d when sending message %u (key 0x%x) to "
-                     "node %u\n", tmpret, DLM_CREATE_LOCK_MSG, dlm->key,
-                     res->owner);
-                if (dlm_is_host_down(tmpret)) {
+                mlog(ML_ERROR, "%s: res %.*s, Error %d send CREATE LOCK to "
+                     "node %u\n", dlm->name, create.namelen, create.name,
+                     tmpret, res->owner);
+                if (dlm_is_host_down(tmpret))
                         ret = DLM_RECOVERING;
-                        mlog(0, "node %u died so returning DLM_RECOVERING "
-                             "from lock message!\n", res->owner);
-                } else {
+                else
                         ret = dlm_err_to_dlm_status(tmpret);
-                }
         }
 
         return ret;
diff --git a/fs/ocfs2/dlm/dlmmaster.c b/fs/ocfs2/dlm/dlmmaster.c
index 11eefb8c12e..9f3b093b629 100644
--- a/fs/ocfs2/dlm/dlmmaster.c
+++ b/fs/ocfs2/dlm/dlmmaster.c
@@ -829,8 +829,8 @@ lookup:
                  * but they might own this lockres.  wait on them. */
                 bit = find_next_bit(dlm->recovery_map, O2NM_MAX_NODES, 0);
                 if (bit < O2NM_MAX_NODES) {
-                        mlog(ML_NOTICE, "%s:%.*s: at least one node (%d) to "
-                             "recover before lock mastery can begin\n",
+                        mlog(0, "%s: res %.*s, At least one node (%d) "
+                             "to recover before lock mastery can begin\n",
                              dlm->name, namelen, (char *)lockid, bit);
                         wait_on_recovery = 1;
                 }
@@ -864,8 +864,8 @@ redo_request:
                  * dlm spinlock would be detectable be a change on the mle,
                  * so we only need to clear out the recovery map once. */
                 if (dlm_is_recovery_lock(lockid, namelen)) {
-                        mlog(ML_NOTICE, "%s: recovery map is not empty, but "
-                             "must master $RECOVERY lock now\n", dlm->name);
+                        mlog(0, "%s: Recovery map is not empty, but must "
+                             "master $RECOVERY lock now\n", dlm->name);
                         if (!dlm_pre_master_reco_lockres(dlm, res))
                                 wait_on_recovery = 0;
                         else {
@@ -883,8 +883,8 @@ redo_request:
                 spin_lock(&dlm->spinlock);
                 bit = find_next_bit(dlm->recovery_map, O2NM_MAX_NODES, 0);
                 if (bit < O2NM_MAX_NODES) {
-                        mlog(ML_NOTICE, "%s:%.*s: at least one node (%d) to "
-                             "recover before lock mastery can begin\n",
+                        mlog(0, "%s: res %.*s, At least one node (%d) "
+                             "to recover before lock mastery can begin\n",
                              dlm->name, namelen, (char *)lockid, bit);
                         wait_on_recovery = 1;
                 } else
@@ -913,8 +913,8 @@ redo_request:
                          * yet, keep going until it does.  this is how the
                          * master will know that asserts are needed back to
                          * the lower nodes. */
-                        mlog(0, "%s:%.*s: requests only up to %u but master "
-                             "is %u, keep going\n", dlm->name, namelen,
+                        mlog(0, "%s: res %.*s, Requests only up to %u but "
+                             "master is %u, keep going\n", dlm->name, namelen,
                              lockid, nodenum, mle->master);
                 }
         }
@@ -924,13 +924,12 @@ wait:
         ret = dlm_wait_for_lock_mastery(dlm, res, mle, &blocked);
         if (ret < 0) {
                 wait_on_recovery = 1;
-                mlog(0, "%s:%.*s: node map changed, redo the "
-                     "master request now, blocked=%d\n",
-                     dlm->name, res->lockname.len,
+                mlog(0, "%s: res %.*s, Node map changed, redo the master "
+                     "request now, blocked=%d\n", dlm->name, res->lockname.len,
                      res->lockname.name, blocked);
                 if (++tries > 20) {
-                        mlog(ML_ERROR, "%s:%.*s: spinning on "
-                             "dlm_wait_for_lock_mastery, blocked=%d\n",
+                        mlog(ML_ERROR, "%s: res %.*s, Spinning on "
+                             "dlm_wait_for_lock_mastery, blocked = %d\n",
                              dlm->name, res->lockname.len,
                              res->lockname.name, blocked);
                         dlm_print_one_lock_resource(res);
@@ -940,7 +939,8 @@ wait:
                 goto redo_request;
         }
 
-        mlog(0, "lockres mastered by %u\n", res->owner);
+        mlog(0, "%s: res %.*s, Mastered by %u\n", dlm->name, res->lockname.len,
+             res->lockname.name, res->owner);
         /* make sure we never continue without this */
         BUG_ON(res->owner == O2NM_MAX_NODES);
 
@@ -2187,8 +2187,6 @@ int dlm_drop_lockres_ref(struct dlm_ctxt *dlm, struct dlm_lock_resource *res)
         namelen = res->lockname.len;
         BUG_ON(namelen > O2NM_MAX_NAME_LEN);
 
-        mlog(0, "%s:%.*s: sending deref to %d\n",
-             dlm->name, namelen, lockname, res->owner);
         memset(&deref, 0, sizeof(deref));
         deref.node_idx = dlm->node_num;
         deref.namelen = namelen;
@@ -2197,14 +2195,12 @@ int dlm_drop_lockres_ref(struct dlm_ctxt *dlm, struct dlm_lock_resource *res)
         ret = o2net_send_message(DLM_DEREF_LOCKRES_MSG, dlm->key,
                                  &deref, sizeof(deref), res->owner, &r);
         if (ret < 0)
-                mlog(ML_ERROR, "Error %d when sending message %u (key 0x%x) to "
-                     "node %u\n", ret, DLM_DEREF_LOCKRES_MSG, dlm->key,
-                     res->owner);
+                mlog(ML_ERROR, "%s: res %.*s, error %d send DEREF to node %u\n",
+                     dlm->name, namelen, lockname, ret, res->owner);
         else if (r < 0) {
                 /* BAD.  other node says I did not have a ref. */
-                mlog(ML_ERROR,"while dropping ref on %s:%.*s "
-                    "(master=%u) got %d.\n", dlm->name, namelen,
-                    lockname, res->owner, r);
+                mlog(ML_ERROR, "%s: res %.*s, DEREF to node %u got %d\n",
+                     dlm->name, namelen, lockname, res->owner, r);
                 dlm_print_one_lock_resource(res);
                 BUG();
         }
@@ -2916,9 +2912,9 @@ static int dlm_do_migrate_request(struct dlm_ctxt *dlm,
                                          &migrate, sizeof(migrate), nodenum,
                                          &status);
                 if (ret < 0) {
-                        mlog(ML_ERROR, "Error %d when sending message %u (key "
-                             "0x%x) to node %u\n", ret, DLM_MIGRATE_REQUEST_MSG,
-                             dlm->key, nodenum);
+                        mlog(ML_ERROR, "%s: res %.*s, Error %d send "
+                             "MIGRATE_REQUEST to node %u\n", dlm->name,
+                             migrate.namelen, migrate.name, ret, nodenum);
                         if (!dlm_is_host_down(ret)) {
                                 mlog(ML_ERROR, "unhandled error=%d!\n", ret);
                                 BUG();
diff --git a/fs/ocfs2/dlm/dlmrecovery.c b/fs/ocfs2/dlm/dlmrecovery.c
index 7efab6d28a2..a3c312c43b9 100644
--- a/fs/ocfs2/dlm/dlmrecovery.c
+++ b/fs/ocfs2/dlm/dlmrecovery.c
@@ -430,6 +430,8 @@ static void dlm_begin_recovery(struct dlm_ctxt *dlm)
 {
         spin_lock(&dlm->spinlock);
         BUG_ON(dlm->reco.state & DLM_RECO_STATE_ACTIVE);
+        printk(KERN_NOTICE "o2dlm: Begin recovery on domain %s for node %u\n",
+               dlm->name, dlm->reco.dead_node);
         dlm->reco.state |= DLM_RECO_STATE_ACTIVE;
         spin_unlock(&dlm->spinlock);
 }
@@ -440,9 +442,18 @@ static void dlm_end_recovery(struct dlm_ctxt *dlm)
         BUG_ON(!(dlm->reco.state & DLM_RECO_STATE_ACTIVE));
         dlm->reco.state &= ~DLM_RECO_STATE_ACTIVE;
         spin_unlock(&dlm->spinlock);
+        printk(KERN_NOTICE "o2dlm: End recovery on domain %s\n", dlm->name);
         wake_up(&dlm->reco.event);
 }
 
+static void dlm_print_recovery_master(struct dlm_ctxt *dlm)
+{
+        printk(KERN_NOTICE "o2dlm: Node %u (%s) is the Recovery Master for the "
+               "dead node %u in domain %s\n", dlm->reco.new_master,
+               (dlm->node_num == dlm->reco.new_master ? "me" : "he"),
+               dlm->reco.dead_node, dlm->name);
+}
+
 static int dlm_do_recovery(struct dlm_ctxt *dlm)
 {
         int status = 0;
@@ -505,9 +516,8 @@ static int dlm_do_recovery(struct dlm_ctxt *dlm)
                 }
                 mlog(0, "another node will master this recovery session.\n");
         }
-        mlog(0, "dlm=%s (%d), new_master=%u, this node=%u, dead_node=%u\n",
-             dlm->name, task_pid_nr(dlm->dlm_reco_thread_task), dlm->reco.new_master,
-             dlm->node_num, dlm->reco.dead_node);
+
+        dlm_print_recovery_master(dlm);
 
         /* it is safe to start everything back up here
          * because all of the dead node's lock resources
@@ -518,15 +528,13 @@ static int dlm_do_recovery(struct dlm_ctxt *dlm)
         return 0;
 
 master_here:
-        mlog(ML_NOTICE, "(%d) Node %u is the Recovery Master for the Dead Node "
-             "%u for Domain %s\n", task_pid_nr(dlm->dlm_reco_thread_task),
-             dlm->node_num, dlm->reco.dead_node, dlm->name);
+        dlm_print_recovery_master(dlm);
 
         status = dlm_remaster_locks(dlm, dlm->reco.dead_node);
         if (status < 0) {
                 /* we should never hit this anymore */
-                mlog(ML_ERROR, "error %d remastering locks for node %u, "
-                     "retrying.\n", status, dlm->reco.dead_node);
+                mlog(ML_ERROR, "%s: Error %d remastering locks for node %u, "
+                     "retrying.\n", dlm->name, status, dlm->reco.dead_node);
                 /* yield a bit to allow any final network messages
                  * to get handled on remaining nodes */
                 msleep(100);
@@ -567,7 +575,7 @@ static int dlm_remaster_locks(struct dlm_ctxt *dlm, u8 dead_node)
                 BUG_ON(ndata->state != DLM_RECO_NODE_DATA_INIT);
                 ndata->state = DLM_RECO_NODE_DATA_REQUESTING;
 
-                mlog(0, "requesting lock info from node %u\n",
+                mlog(0, "%s: Requesting lock info from node %u\n", dlm->name,
                      ndata->node_num);
 
                 if (ndata->node_num == dlm->node_num) {
@@ -640,7 +648,7 @@ static int dlm_remaster_locks(struct dlm_ctxt *dlm, u8 dead_node)
                 spin_unlock(&dlm_reco_state_lock);
         }
 
-        mlog(0, "done requesting all lock info\n");
+        mlog(0, "%s: Done requesting all lock info\n", dlm->name);
 
         /* nodes should be sending reco data now
          * just need to wait */
@@ -802,10 +810,9 @@ static int dlm_request_all_locks(struct dlm_ctxt *dlm, u8 request_from,
 
         /* negative status is handled by caller */
         if (ret < 0)
-                mlog(ML_ERROR, "Error %d when sending message %u (key "
-                     "0x%x) to node %u\n", ret, DLM_LOCK_REQUEST_MSG,
-                     dlm->key, request_from);
-
+                mlog(ML_ERROR, "%s: Error %d send LOCK_REQUEST to node %u "
+                     "to recover dead node %u\n", dlm->name, ret,
+                     request_from, dead_node);
         // return from here, then
         // sleep until all received or error
         return ret;
@@ -956,9 +963,9 @@ static int dlm_send_all_done_msg(struct dlm_ctxt *dlm, u8 dead_node, u8 send_to)
         ret = o2net_send_message(DLM_RECO_DATA_DONE_MSG, dlm->key, &done_msg,
                                  sizeof(done_msg), send_to, &tmpret);
         if (ret < 0) {
-                mlog(ML_ERROR, "Error %d when sending message %u (key "
-                     "0x%x) to node %u\n", ret, DLM_RECO_DATA_DONE_MSG,
-                     dlm->key, send_to);
+                mlog(ML_ERROR, "%s: Error %d send RECO_DATA_DONE to node %u "
+                     "to recover dead node %u\n", dlm->name, ret, send_to,
+                     dead_node);
                 if (!dlm_is_host_down(ret)) {
                         BUG();
                 }
@@ -1127,9 +1134,11 @@ static int dlm_send_mig_lockres_msg(struct dlm_ctxt *dlm,
         if (ret < 0) {
                 /* XXX: negative status is not handled.
                  * this will end up killing this node. */
-                mlog(ML_ERROR, "Error %d when sending message %u (key "
-                     "0x%x) to node %u\n", ret, DLM_MIG_LOCKRES_MSG,
-                     dlm->key, send_to);
+                mlog(ML_ERROR, "%s: res %.*s, Error %d send MIG_LOCKRES to "
+                     "node %u (%s)\n", dlm->name, mres->lockname_len,
+                     mres->lockname, ret, send_to,
+                     (orig_flags & DLM_MRES_MIGRATION ?
+                      "migration" : "recovery"));
         } else {
                 /* might get an -ENOMEM back here */
                 ret = status;
@@ -2324,9 +2333,9 @@ static void dlm_do_local_recovery_cleanup(struct dlm_ctxt *dlm, u8 dead_node)
                         dlm_revalidate_lvb(dlm, res, dead_node);
                         if (res->owner == dead_node) {
                                 if (res->state & DLM_LOCK_RES_DROPPING_REF) {
-                                        mlog(ML_NOTICE, "Ignore %.*s for "
+                                        mlog(ML_NOTICE, "%s: res %.*s, Skip "
                                              "recovery as it is being freed\n",
-                                             res->lockname.len,
+                                             dlm->name, res->lockname.len,
                                              res->lockname.name);
                                 } else
                                         dlm_move_lockres_to_recovery_list(dlm,
diff --git a/fs/ocfs2/dlm/dlmthread.c b/fs/ocfs2/dlm/dlmthread.c
index 1d6d1d22c47..46faac20f16 100644
--- a/fs/ocfs2/dlm/dlmthread.c
+++ b/fs/ocfs2/dlm/dlmthread.c
@@ -185,8 +185,6 @@ static void dlm_purge_lockres(struct dlm_ctxt *dlm,
                 /* clear our bit from the master's refmap, ignore errors */
                 ret = dlm_drop_lockres_ref(dlm, res);
                 if (ret < 0) {
-                        mlog(ML_ERROR, "%s: deref %.*s failed %d\n", dlm->name,
-                             res->lockname.len, res->lockname.name, ret);
                         if (!dlm_is_host_down(ret))
                                 BUG();
                 }