diff --git a/source/os/src/osFile.c b/source/os/src/osFile.c
index b5f41719ff2ecf07acc5bcdb235792b8731e21e6..0d6b5a602e4d4ca3ceb75acccff939b7ae4fdcf6 100644
--- a/source/os/src/osFile.c
+++ b/source/os/src/osFile.c
@@ -324,7 +324,7 @@ int64_t taosWriteFile(TdFilePtr pFile, const void *buf, int64_t count) {
     nleft -= nwritten;
     tbuf += nwritten;
   }
-
+  fdatasync(pFile->fd);
   return count;
 }