diff --git a/source/dnode/vnode/src/inc/tsdb.h b/source/dnode/vnode/src/inc/tsdb.h
index 140f26380f..f6d6165f03 100644
--- a/source/dnode/vnode/src/inc/tsdb.h
+++ b/source/dnode/vnode/src/inc/tsdb.h
@@ -353,6 +353,9 @@ struct STsdb {
   TdThreadMutex  lruMutex;
   SLRUCache     *biCache;
   TdThreadMutex  biMutex;
+#ifdef USE_DEV_CODE
+  struct STFileSystem *pFS;
+#endif
 };
 
 struct TSDBKEY {
diff --git a/source/dnode/vnode/src/tsdb/dev/tsdbFS.c b/source/dnode/vnode/src/tsdb/dev/tsdbFS.c
index 9093bb7617..e516f36204 100644
--- a/source/dnode/vnode/src/tsdb/dev/tsdbFS.c
+++ b/source/dnode/vnode/src/tsdb/dev/tsdbFS.c
@@ -16,10 +16,61 @@
 #include "dev.h"
 
 struct STFileSystem {
-  STsdb *pTsdb;
+  STsdb           *pTsdb;
+  int32_t          nFileSet;
+  struct SFileSet *aFileSet;
 };
 
-int32_t tsdbOpenFileSystem(STsdb *pTsdb, struct STFileSystem **ppFS) {
+static int32_t create_file_system(STsdb *pTsdb, struct STFileSystem **ppFS) {
+  ppFS[0] = taosMemoryCalloc(1, sizeof(*ppFS[0]));
+  if (ppFS[0] == NULL) return TSDB_CODE_OUT_OF_MEMORY;
+  ppFS[0]->pTsdb = pTsdb;
+  return 0;
+}
+
+static int32_t destroy_file_system(struct STFileSystem **ppFS) {
+  if (ppFS[0]) {
+    taosMemoryFree(ppFS[0]->aFileSet);
+    taosMemoryFree(ppFS[0]);
+    ppFS[0] = NULL;
+  }
+  return 0;
+}
+
+static int32_t open_file_system(struct STFileSystem *pFS) {
   // TODO
   return 0;
 }
+
+static int32_t close_file_system(struct STFileSystem *pFS) {
+  // TODO
+  return 0;
+}
+
+int32_t tsdbOpenFileSystem(STsdb *pTsdb, struct STFileSystem **ppFS) {
+  int32_t code;
+  int32_t lino;
+
+  code = create_file_system(pTsdb, ppFS);
+  TSDB_CHECK_CODE(code, lino, _exit);
+
+  code = open_file_system(ppFS[0]);
+  TSDB_CHECK_CODE(code, lino, _exit);
+
+_exit:
+  if (code) {
+    tsdbError("vgId:%d %s failed at line %d since %s", TD_VID(pTsdb->pVnode), __func__, lino, tstrerror(code));
+    if (ppFS[0]) destroy_file_system(ppFS);
+  } else {
+    tsdbInfo("vgId:%d %s success", TD_VID(pTsdb->pVnode), __func__);
+  }
+  return 0;
+}
+
+int32_t tsdbCloseFileSystem(struct STFileSystem **ppFS) {
+  if (ppFS[0] == NULL) return 0;
+
+  close_file_system(ppFS[0]);
+  destroy_file_system(ppFS);
+  return 0;
+}
diff --git a/source/dnode/vnode/src/tsdb/dev/tsdbFS.h b/source/dnode/vnode/src/tsdb/dev/tsdbFS.h
index 18712d6dfa..dc1bba69b8 100644
--- a/source/dnode/vnode/src/tsdb/dev/tsdbFS.h
+++ b/source/dnode/vnode/src/tsdb/dev/tsdbFS.h
@@ -16,13 +16,18 @@
 #ifndef _TSDB_FILE_SYSTEM_H
 #define _TSDB_FILE_SYSTEM_H
 
+#include "tsdb.h"
+
 #ifdef __cplusplus
 extern "C" {
 #endif
 
 /* Exposed Handle */
+struct STFileSystem;
 
 /* Exposed APIs */
+int32_t tsdbOpenFileSystem(STsdb *pTsdb, struct STFileSystem **ppFS);
+int32_t tsdbCloseFileSystem(struct STFileSystem **ppFS);
 
 /* Exposed Structs */