diff --git a/source/dnode/vnode/impl/inc/vnodeDef.h b/source/dnode/vnode/impl/inc/vnodeDef.h
index db6e742f44..12ac04ac8b 100644
--- a/source/dnode/vnode/impl/inc/vnodeDef.h
+++ b/source/dnode/vnode/impl/inc/vnodeDef.h
@@ -21,6 +21,7 @@
 #include "vnode.h"
 #include "vnodeAllocatorPool.h"
 #include "vnodeCommit.h"
+#include "vnodeFileSystem.h"
 #include "vnodeOptions.h"
 #include "vnodeStateMgr.h"
 #include "vnodeSync.h"
@@ -38,6 +39,8 @@ struct SVnode {
   SMeta*           pMeta;
   STsdb*           pTsdb;
   STQ*             pTq;
+  SVnodeSync*      pSync;
+  SVnodeFS*        pFs;
 };
 
 #ifdef __cplusplus
diff --git a/source/dnode/vnode/impl/inc/vnodeFileSystem.h b/source/dnode/vnode/impl/inc/vnodeFileSystem.h
new file mode 100644
index 0000000000..2a885c9c34
--- /dev/null
+++ b/source/dnode/vnode/impl/inc/vnodeFileSystem.h
@@ -0,0 +1,30 @@
+/*
+ * Copyright (c) 2019 TAOS Data, Inc. <jhtao@taosdata.com>
+ *
+ * This program is free software: you can use, redistribute, and/or modify
+ * it under the terms of the GNU Affero General Public License, version 3
+ * or later ("AGPL"), as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef _TD_VNODE_FILE_SYSTEM_H_
+#define _TD_VNODE_FILE_SYSTEM_H_
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+typedef struct {
+} SVnodeFS;
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /*_TD_VNODE_FILE_SYSTEM_H_*/
\ No newline at end of file
diff --git a/source/dnode/vnode/impl/src/vnodeFileSystem.c b/source/dnode/vnode/impl/src/vnodeFileSystem.c
new file mode 100644
index 0000000000..5e9f89ccd5
--- /dev/null
+++ b/source/dnode/vnode/impl/src/vnodeFileSystem.c
@@ -0,0 +1,16 @@
+/*
+ * Copyright (c) 2019 TAOS Data, Inc. <jhtao@taosdata.com>
+ *
+ * This program is free software: you can use, redistribute, and/or modify
+ * it under the terms of the GNU Affero General Public License, version 3
+ * or later ("AGPL"), as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "vnodeDef.h"
\ No newline at end of file