diff --git a/sql/wsrep_mysqld.cc b/sql/wsrep_mysqld.cc
index 93ea3bc539f..c0f48cca9cd 100644
--- a/sql/wsrep_mysqld.cc
+++ b/sql/wsrep_mysqld.cc
@@ -316,29 +316,31 @@ wsp::node_status           local_status;
  */
 Wsrep_schema *wsrep_schema= 0;
 
-static void wsrep_log_cb(wsrep::log::level level, const char *msg)
+static void wsrep_log_cb(wsrep::log::level level,
+                         const char*, const char *msg)
 {
   /*
     Silence all wsrep related logging from lib and provider if
     wsrep is not enabled.
   */
-  if (WSREP_ON)
-  {
-    switch (level) {
-    case wsrep::log::info:
-      sql_print_information("WSREP: %s", msg);
-      break;
-    case wsrep::log::warning:
-      sql_print_warning("WSREP: %s", msg);
-      break;
-    case wsrep::log::error:
-    sql_print_error("WSREP: %s", msg);
+  if (!WSREP_ON) return;
+
+  switch (level) {
+  case wsrep::log::info:
+    WSREP_INFO("%s", msg);
+    break;
+  case wsrep::log::warning:
+    WSREP_WARN("%s", msg);
+    break;
+  case wsrep::log::error:
+    WSREP_ERROR("%s", msg);
+    break;
+  case wsrep::log::debug:
+    WSREP_DEBUG("%s", msg);
+    break;
+  case wsrep::log::unknown:
+    WSREP_UNKNOWN("%s", msg);
     break;
-    case wsrep::log::debug:
-      if (wsrep_debug) sql_print_information ("[Debug] WSREP: %s", msg);
-    default:
-      break;
-    }
   }
 }
 
diff --git a/sql/wsrep_mysqld.h b/sql/wsrep_mysqld.h
index b0050a2ebae..29b1c4cf1f4 100644
--- a/sql/wsrep_mysqld.h
+++ b/sql/wsrep_mysqld.h
@@ -251,30 +251,30 @@ void WSREP_LOG(void (*fun)(const char* fmt, ...), const char* fmt, ...);
 #define WSREP_INFO(...)  WSREP_LOG(sql_print_information, ##__VA_ARGS__)
 #define WSREP_WARN(...)  WSREP_LOG(sql_print_warning,     ##__VA_ARGS__)
 #define WSREP_ERROR(...) WSREP_LOG(sql_print_error,       ##__VA_ARGS__)
+#define WSREP_UNKNOWN(fmt, ...) WSREP_ERROR("UNKNOWN: " fmt, ##__VA_ARGS__)
 
 #define WSREP_LOG_CONFLICT_THD(thd, role)                               \
-  WSREP_LOG(sql_print_information,                                      \
-            "%s: \n "                                                   \
-            "  THD: %lu, mode: %s, state: %s, conflict: %s, seqno: %lld\n " \
-            "  SQL: %s",                                                \
-            role,                                                       \
-            thd_get_thread_id(thd),                                     \
-            wsrep_thd_client_mode_str(thd),                             \
-            wsrep_thd_client_state_str(thd),                            \
-            wsrep_thd_transaction_state_str(thd),                       \
-            wsrep_thd_trx_seqno(thd),                                   \
-            wsrep_thd_query(thd)                                        \
+  WSREP_INFO("%s: \n "                                                  \
+             "  THD: %lu, mode: %s, state: %s, conflict: %s, seqno: %lld\n " \
+             "  SQL: %s",                                               \
+             role,                                                      \
+             thd_get_thread_id(thd),                                    \
+             wsrep_thd_client_mode_str(thd),                            \
+             wsrep_thd_client_state_str(thd),                           \
+             wsrep_thd_transaction_state_str(thd),                      \
+             wsrep_thd_trx_seqno(thd),                                  \
+             wsrep_thd_query(thd)                                       \
             );
 
 #define WSREP_LOG_CONFLICT(bf_thd, victim_thd, bf_abort)                \
   if (wsrep_debug || wsrep_log_conflicts)                               \
   {                                                                     \
-    WSREP_LOG(sql_print_information, "cluster conflict due to %s for threads:", \
-              (bf_abort) ? "high priority abort" : "certification failure" \
+    WSREP_INFO("cluster conflict due to %s for threads:",               \
+               (bf_abort) ? "high priority abort" : "certification failure" \
               );                                                        \
     if (bf_thd)     WSREP_LOG_CONFLICT_THD(bf_thd, "Winning thread");   \
     if (victim_thd) WSREP_LOG_CONFLICT_THD(victim_thd, "Victim thread"); \
-    WSREP_LOG(sql_print_information, "context: %s:%d", __FILE__, __LINE__); \
+    WSREP_INFO("context: %s:%d", __FILE__, __LINE__); \
   }
 
 #define WSREP_PROVIDER_EXISTS                                                  \
diff --git a/sql/wsrep_server_service.cc b/sql/wsrep_server_service.cc
index da021d4a7eb..cd432ab3eae 100644
--- a/sql/wsrep_server_service.cc
+++ b/sql/wsrep_server_service.cc
@@ -162,16 +162,19 @@ void Wsrep_server_service::log_message(enum wsrep::log::level level,
   switch (level)
   {
   case wsrep::log::debug:
-    sql_print_information("debug: %s", message);
+    WSREP_DEBUG("%s", message);
     break;
   case wsrep::log::info:
-    sql_print_information("%s", message);
+    WSREP_INFO("%s", message);
     break;
   case wsrep::log::warning:
-    sql_print_warning("%s", message);
+    WSREP_WARN("%s", message);
     break;
   case wsrep::log::error:
-    sql_print_error("%s", message);
+    WSREP_ERROR("%s", message);
+    break;
+  case wsrep::log::unknown:
+    WSREP_UNKNOWN("%s", message);
     break;
   }
 }
diff --git a/wsrep-lib b/wsrep-lib
index dcf3ce91cdb..515ac816f98 160000
--- a/wsrep-lib
+++ b/wsrep-lib
@@ -1 +1 @@
-Subproject commit dcf3ce91cdb9d254ae04ecc6a2f91f46b171280d
+Subproject commit 515ac816f98329c0227d0060cc9339c889810834