diff --git a/src/sled/log/log.cc b/src/sled/log/log.cc
index f2af81d..02f1677 100644
--- a/src/sled/log/log.cc
+++ b/src/sled/log/log.cc
@@ -118,7 +118,7 @@ private:
 };
 
 static LogLevel g_log_level = LogLevel::kTrace;
-// static std::string g_log_file_name;
+static std::string g_log_file_name;
 static std::ofstream g_log_stream;
 
 void
@@ -132,12 +132,13 @@ SetLogFileName(const char *file_name)
 {
     std::ofstream tmp_stream(file_name, std::ios_base::app);
     if (tmp_stream.is_open()) {
-        // g_log_stream.open(file_name, std::ios_base::app);
-        // g_log_stream = std::move(tmp_stream);
         Waiter waiter(g_request_id.fetch_add(1), g_current_id);
+        waiter.wait();
+        g_log_file_name = file_name;
         std::swap(g_log_stream, tmp_stream);
     } else {
         LOGE("log", "can't open new log file [{}]", file_name);
+        return;
     }
     LOGD("log", "log to new file [{}]", file_name);
 }
@@ -156,6 +157,7 @@ Log(LogLevel level, const char *tag, const char *fmt, const char *file_name, int
 
     Waiter waiter(g_request_id.fetch_add(1), g_current_id);
     waiter.wait();
+
     if (g_log_stream.is_open()) { g_log_stream << msg << std::endl; }
     std::cout << GetConsoleColorPrefix(level) << msg << GetConsoleColorSuffix() << std::endl;
 }