diff --git a/src/os/src/detail/osFile.c b/src/os/src/detail/osFile.c
index 42f2ff3afe3c1efe7603af32985c6c52ddc84cd4..0b7b5ca487e5728a5dbdd93e45ee2b0593f98000 100644
--- a/src/os/src/detail/osFile.c
+++ b/src/os/src/detail/osFile.c
@@ -142,6 +142,8 @@ int64_t taosCopy(char *from, char *to) {
     if (bytes < sizeof(buffer)) break;
   }
 
+  fsync(fidto);
+
   close(fidfrom);
   close(fidto);
   return size;