diff --git a/src/sled/log/log.cc b/src/sled/log/log.cc
index 57885ee..3bd5cd9 100644
--- a/src/sled/log/log.cc
+++ b/src/sled/log/log.cc
@@ -98,7 +98,7 @@ GetCurrentUTCTime()
 }
 
 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
@@ -110,8 +110,12 @@ SetLogLevel(LogLevel level)
 void
 SetLogFileName(const char *file_name)
 {
-    g_log_file_name = file_name;
-    g_log_stream.open(file_name, std::ios_base::app);
+    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);
+    } else {
+        LOGE("log", "can't open new log file [{}]", file_name);
+    }
 }
 
 static std::atomic<uint32_t> g_current_id(0);