diff --git a/src/dnode/src/dnodeMain.c b/src/dnode/src/dnodeMain.c
index a2f85d5ae0f999b46faa1b9edce4c471c8a733bf..05c9d2be28adacb5439392ae9266929d32a2214a 100644
--- a/src/dnode/src/dnodeMain.c
+++ b/src/dnode/src/dnodeMain.c
@@ -186,7 +186,7 @@ static int32_t dnodeInitStorage() {
     dError("failed to init TFS since %s", tstrerror(terrno));
     return -1;
   }
-  snprintf(tsDataDir, tfsPrimaryPath(), TSDB_FILENAME_LEN);
+  snprintf(tsDataDir, TFS_PRIMARY_PATH(), TSDB_FILENAME_LEN);
   sprintf(tsMnodeDir, "%s/mnode", tsDataDir);
   sprintf(tsVnodeDir, "%s/vnode", tsDataDir);
   sprintf(tsDnodeDir, "%s/dnode", tsDataDir);
@@ -203,12 +203,12 @@ static int32_t dnodeInitStorage() {
    return -1;
   }
 
-  if (tfsCreateDir("vnode") < 0) {
+  if (tfsMkdir("vnode") < 0) {
     dError("failed to create vnode dir since %s", tstrerror(terrno));
     return -1;
   }
 
-  if (tfsCreateDir("vnode_bak") < 0) {
+  if (tfsMkdir("vnode_bak") < 0) {
     dError("failed to create vnode_bak dir since %s", tstrerror(terrno));
     return -1;
   }
diff --git a/src/inc/tfs.h b/src/inc/tfs.h
index a0d666c5fb209470ce2d451a85af74a7258b043a..1faa9f716ac81bfe102798d7589f9740c5f1ce68 100644
--- a/src/inc/tfs.h
+++ b/src/inc/tfs.h
@@ -40,36 +40,30 @@ void tfsUpdateInfo();
 const char *TFS_PRIMARY_PATH();
 const char *TFS_DISK_PATH(int level, int id);
 
-// MANIP APIS ====================================
-int tfsMkdir(const char *rname);
-int tfsRmdir(const char *rname);
-int tfsRename(char *orname, char *nrname);
-
-// tfcntl.c ====================================
-typedef struct TFSFILE {
+// TFILE APIs ====================================
+typedef struct {
   int  level;
   int  id;
   char rname[TSDB_FILENAME_LEN];  // REL name
   char aname[TSDB_FILENAME_LEN];  // ABS name
-} TFSFILE;
+} TFILE;
 
-const char *tfsAbsName(TFSFILE *pfile);
-const char *tfsRelName(TFSFILE *pfile);
-void        tfsDirName(TFSFILE *pfile, char dest[]);
-void        tfsBaseName(TFSFILE *pfile, char dest[]);
-int         tfsopen(TFSFILE *pfile, int flags);
-int         tfsclose(int fd);
-int         tfsremove(TFSFILE *pfile);
-SDiskID     tfsFileID(TFSFILE *pfile);
+#define TFILE_LEVEL(pf) ((pf)->level)
+#define TFILE_ID(pf) ((pf)->id)
+#define TFILE_NAME(pf) ((pf)->aname)
+
+int tfsInitFile(TFILE *pf, int level, int id, const char *bname);
+
+// DIR APIs ====================================
+int tfsMkdir(const char *rname);
+int tfsRmdir(const char *rname);
+int tfsRename(char *orname, char *nrname);
 
-typedef struct TFSDIR TFSDIR;
+typedef struct TDIR TDIR;
 
-int            tfsCreateDir(char *dirname);
-int            tfsRemoveDir(char *dirname);
-int            tfsRename(char *oldpath, char *newpath);
-TFSDIR *       tfsOpenDir(char *dir);
-void           tfsCloseDir(TFSDIR *tdir);
-const TFSFILE *tfsReadDir(TFSDIR *tdir);
+TDIR *       tfsOpendir(const char *rname);
+const TFILE *tfsReaddir(TDIR *tdir);
+void         tfsClosedir(TDIR *tdir);
 
 #ifdef __cplusplus
 }
diff --git a/src/tfs/inc/tfsint.h b/src/tfs/inc/tfsint.h
index d3377d9fd24dafc1700af7e4697bc2dba1ae2ab7..d63fe93c52ef920469baffb969cf62341fbdc047 100644
--- a/src/tfs/inc/tfsint.h
+++ b/src/tfs/inc/tfsint.h
@@ -60,8 +60,6 @@ SDisk *tfsFreeDisk(SDisk *pDisk);
 void   tfsUpdateDiskInfo(SDisk *pDisk);
 
 // ttier.c ======================================================
-#define TSDB_MAX_DISK_PER_TIER 16
-
 typedef struct {
   int64_t size;
   int64_t free;
@@ -70,7 +68,7 @@ typedef struct STier {
   int       level;
   int32_t   ndisk;
   STierMeta tmeta;
-  SDisk *   disks[TSDB_MAX_DISK_PER_TIER];
+  SDisk *   disks[TSDB_MAX_DISKS_PER_TIER];
 } STier;
 
 #define TIER_LEVEL(pt) ((pt)->level)
diff --git a/src/tfs/src/tfcntl.c b/src/tfs/src/tfcntl.c
deleted file mode 100644
index 32bbebde0d9ee4359b0d34c94620018126212f4a..0000000000000000000000000000000000000000
--- a/src/tfs/src/tfcntl.c
+++ /dev/null
@@ -1,247 +0,0 @@
-/*
- * 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 "os.h"
-#include "taoserror.h"
-#include "tfs.h"
-#include "tfsint.h"
-
-struct TFSDIR {
-  int     level;
-  int     id;
-  char    name[TSDB_FILENAME_LEN];
-  TFSFILE tfsfile;
-  DIR *   dir;
-};
-
-static int      tfsOpenDirImpl(TFSDIR *tdir);
-static void     tfsInitFile(TFSFILE *pfile, int level, int id, char *rname);
-static TFSFILE *tfsNewFile(int level, int id, char *rname);
-
-// PUBLIC ==========================================
-TFSDIR *tfsOpenDir(char *dir) {
-  TFSDIR *tdir = (TFSDIR *)calloc(1, sizeof(*tdir));
-  if (tdir == NULL) {
-    terrno = TSDB_CODE_FS_OUT_OF_MEMORY;
-    return NULL;
-  }
-
-  if (tfsOpenDirImpl(tdir) < 0) {
-    tfsCloseDir(tdir);
-    return NULL;
-  }
-
-  return tdir;
-}
-
-void tfsCloseDir(TFSDIR *tdir) {
-  if (tdir) {
-    if (tdir->dir != NULL) {
-      closedir(tdir->dir);
-      tdir->dir = NULL;
-    }
-    free(tdir);
-  }
-}
-
-const TFSFILE *tfsReadDir(TFSDIR *tdir) {
-  if (tdir->dir == NULL) return NULL;
-
-  char rname[TSDB_FILENAME_LEN] = "\0";
-
-  while (true) {
-    struct dirent *dp = readdir(tdir->dir);
-    if (dp != NULL) {
-      snprintf(rname, TSDB_FILENAME_LEN, "%s/%s", tdir->name, dp->d_name);
-      tfsInitFile(&(tdir->tfsfile), tdir->level, tdir->id, rname);
-
-      return &(tdir->tfsfile);
-    }
-
-    closedir(tdir->dir);
-
-    // Move to next
-    if (tdir->id < tfsNDisksAt(tdir->level) - 1) {
-      tdir->id++;
-    } else {
-      tdir->level++;
-      tdir->id = 0;
-    }
-
-    if (tfsOpenDirImpl(tdir) < 0) {
-      return NULL;
-    }
-
-    if (tdir->dir == NULL) return NULL;
-  }
-}
-
-const char *tfsAbsName(TFSFILE *pfile) { return pfile->aname; }
-const char *tfsRelName(TFSFILE *pfile) { return pfile->rname; }
-
-void tfsDirName(TFSFILE *pfile, char dest[]) {
-  char fname[TSDB_FILENAME_LEN] = "\0";
-
-  strncpy(fname, tfsAbsName(pfile), TSDB_FILENAME_LEN);
-  strncpy(dest, dirname(fname), TSDB_FILENAME_LEN);
-}
-
-void tfsBaseName(TFSFILE *pfile, char dest[]) {
-  char fname[TSDB_FILENAME_LEN] = "\0";
-  strncpy(fname, tfsAbsName(pfile), TSDB_FILENAME_LEN);
-  strncpy(dest, basename(fname), TSDB_FILENAME_LEN);
-}
-
-int tfsopen(TFSFILE *pfile, int flags) {
-  ASSERT(pfile->level != TFS_UNDECIDED_LEVEL);
-
-  if (flags & O_CREAT) {
-    if (access(pfile->aname, F_OK) == 0) {
-      terrno = TSDB_CODE_FS_FILE_ALREADY_EXISTS;
-      return -1;
-    }
-
-    // adjust level
-    if (pfile->level > tfsLevels()) {
-      pfile->level = tfsLevels();
-    }
-
-    // adjust id
-    if (pfile->id == TFS_UNDECIDED_ID) {
-      // TODO
-    }
-  }
-
-  ASSERT(pfile->id != TFS_UNDECIDED_ID);
-
-  int fd = open(pfile->aname, flags);
-  if (fd < 0) {
-    terrno = TAOS_SYSTEM_ERROR(errno);
-    return -1;
-  }
-
-  if (flags & O_CREAT) {
-    tfsLock();
-    tfsIncFileAt(pfile->level, pfile->id);
-    tfsUnLock();
-  }
-
-  return fd;
-}
-
-int tfsclose(int fd) {
-  if (close(fd) < 0) {
-    terrno = TAOS_SYSTEM_ERROR(errno);
-    return -1;
-  }
-
-  return 0;
-}
-
-int tfsremove(TFSFILE *pfile) {
-  int code = remove(pfile->aname);
-  if (code != 0) {
-    terrno = TAOS_SYSTEM_ERROR(errno);
-    return -1;
-  }
-  tfsLock();
-  tfsDecFileAt(pfile->level, pfile->id);
-  tfsUnLock();
-  return 0;
-}
-
-int tfsRemoveFiles(int nfile, ...) {
-  va_list  valist;
-  TFSFILE *pfile = NULL;
-  int      code = 0;
-
-  va_start(valist, nfile);
-  tfsLock();
-
-  for (int i = 0; i < nfile; i++) {
-    pfile = va_arg(valist, TFSFILE *);
-    code = remove(pfile->aname);
-    if (code != 0) {
-      terrno = TAOS_SYSTEM_ERROR(errno);
-      tfsUnLock();
-      va_end(valist);
-      return -1;
-    }
-
-    tfsDecFileAt(pfile->level, pfile->id);
-  }
-
-  tfsUnLock();
-  va_end(valist);
-
-  return 0;
-}
-
-SDiskID tfsFileID(TFSFILE *pfile) {
-  SDiskID did;
-
-  did.level = pfile->level;
-  did.id = pfile->id;
-
-  return did;
-}
-
-// PRIVATE =============================================
-static int tfsOpenDirImpl(TFSDIR *tdir) {
-  char dirName[TSDB_FILENAME_LEN] = "\0";
-
-  while (tdir->level < tfsMaxLevel()) {
-    while (tdir->id < tfsNDisksAt(tdir->level)) {
-      snprintf(dirName, TSDB_FILENAME_LEN, "%s/%s", tfsGetDiskDir(tdir->level, tdir->id), tdir->name);
-
-      tdir->dir = opendir(dirName);
-      if (tdir->dir == NULL) {
-        if (errno == ENOENT) {
-          tdir->id++;
-        } else {
-          fError("failed to open dir %s since %s", dirName, strerror(errno));
-          terrno = TAOS_SYSTEM_ERROR(errno);
-          return -1;
-        }
-      } else {
-        return 0;
-      }
-    }
-
-    tdir->id = 0;
-    tdir->level++;
-  }
-
-  ASSERT(tdir->dir == NULL);
-  return 0;
-}
-
-static void tfsInitFile(TFSFILE *pfile, int level, int id, char *rname) {
-  pfile->level = level;
-  pfile->id = id;
-  strncpy(pfile->rname, rname, TSDB_FILENAME_LEN);
-  snprintf(pfile->aname, TSDB_FILENAME_LEN, "%s/%s", tfsGetDiskName(level, id), rname);
-}
-
-static TFSFILE *tfsNewFile(int level, int id, char *rname) {
-  TFSFILE *pfile = (TFSFILE *)calloc(1, sizeof(*pfile));
-  if (pfile == NULL) {
-    terrno = TSDB_CODE_FS_OUT_OF_MEMORY;
-    return NULL;
-  }
-
-  tfsInitFile(pfile, level, id, rname);
-  return pfile;
-}
diff --git a/src/tfs/src/tfs.c b/src/tfs/src/tfs.c
index fc091f7b23dbcb5d500ae390b28ad1f808e00979..c9ce560c695a2694503818027a1f2c6d327b8a51 100644
--- a/src/tfs/src/tfs.c
+++ b/src/tfs/src/tfs.c
@@ -15,12 +15,14 @@
 
 #include "os.h"
 
+#include "taosdef.h"
 #include "hash.h"
 #include "taoserror.h"
 #include "tfs.h"
 #include "tfsint.h"
 
-#define TSDB_MAX_TIER 3
+#pragma GCC diagnostic push
+#pragma GCC diagnostic ignored "-Wformat-truncation"
 
 typedef struct {
   int64_t tsize;
@@ -32,10 +34,14 @@ typedef struct {
   bool            locked;
   SFSMeta         meta;
   int             nlevel;
-  STier           tiers[TSDB_MAX_TIER];
+  STier           tiers[TSDB_MAX_TIERS];
   SHashObj *      map;  // name to did map
 } SFS;
 
+typedef struct {
+  SDisk *pDisk;
+} SDiskIter;
+
 #define TFS_LOCKED() (pfs->locked)
 #define TFS_META() (pfs->meta)
 #define TFS_NLEVEL() (pfs->nlevel)
@@ -44,6 +50,9 @@ typedef struct {
 #define TFS_TIER_AT(level) (TFS_TIERS() + (level))
 #define TFS_DISK_AT(level, id) DISK_AT_TIER(TFS_TIER_AT(level), id)
 #define TFS_PRIMARY_DISK() TFS_DISK_AT(TFS_PRIMARY_LEVEL, TFS_PRIMARY_ID)
+#define TFS_IS_VALID_LEVEL(level) (((level) >= 0) && ((level) < TFS_NLEVEL()))
+#define TFS_IS_VALID_ID(level, id) (((id) >= 0) && ((id) < TIER_NDISKS(TFS_TIER_AT(level))))
+#define TFS_IS_VALID_DISK(level, id) (TFS_IS_VALID_LEVEL(level) && TFS_IS_VALID_ID(level, id))
 
 static SFS  tfs = {0};
 static SFS *pfs = &tfs;
@@ -57,12 +66,15 @@ static SDisk *tfsGetDiskByID(SDiskID did);
 static SDisk *tfsGetDiskByName(const char *dir);
 static int    tfsLock();
 static int    tfsUnLock();
+static int    tfsOpendirImpl(TDIR *tdir);
+static void   tfsInitDiskIter(SDiskIter *pIter);
+static SDisk *tfsNextDisk(SDiskIter *pIter);
 
-// FS APIs
+// FS APIs ====================================
 int tfsInit(SDiskCfg *pDiskCfg, int ndisk) {
   ASSERT(ndisk > 0);
 
-  for (int level = 0; level < TSDB_MAX_TIER; level++) {
+  for (int level = 0; level < TSDB_MAX_TIERS; level++) {
     tfsInitTier(TFS_TIER_AT(level), level);
   }
 
@@ -72,7 +84,7 @@ int tfsInit(SDiskCfg *pDiskCfg, int ndisk) {
     return -1;
   }
 
-  pfs->map = taosHashInit(TSDB_MAX_TIER * TSDB_MAX_DISKS_PER_TIER * 2,
+  pfs->map = taosHashInit(TSDB_MAX_TIERS * TSDB_MAX_DISKS_PER_TIER * 2,
                           taosGetDefaultHashFunction(TSDB_DATA_TYPE_BINARY), false, HASH_NO_LOCK);
   if (pfs->map == NULL) {
     terrno = TSDB_CODE_FS_OUT_OF_MEMORY;
@@ -123,7 +135,21 @@ void tfsUpdateInfo() {
 const char *TFS_PRIMARY_PATH() { return DISK_DIR(TFS_PRIMARY_DISK()); }
 const char *TFS_DISK_PATH(int level, int id) { return DISK_DIR(TFS_DISK_AT(level, id)); }
 
-// MANIP APIS ====================================
+// TFILE APIs ====================================
+int tfsInitFile(TFILE *pf, int level, int id, const char *bname) {
+  if (!TFS_IS_VALID_DISK(level, id)) return -1;
+
+  SDisk *pDisk = TFS_DISK_AT(level, id);
+
+  pf->level = level;
+  pf->id = id;
+  strncpy(pf->rname, bname, TSDB_FILENAME_LEN);
+  snprintf(pf->aname, TSDB_FILENAME_LEN, "%s/%s", DISK_DIR(pDisk), pf->rname);
+
+  return 0;
+}
+
+// DIR APIs ====================================
 int tfsMkdir(const char *rname) {
   char aname[TSDB_FILENAME_LEN] = "\0";
 
@@ -180,6 +206,68 @@ int tfsRename(char *orname, char *nrname) {
   return 0;
 }
 
+struct TDIR {
+  SDiskIter iter;
+  int       level;
+  int       id;
+  char      dirname[TSDB_FILENAME_LEN];
+  TFILE     tfile;
+  DIR *     dir;
+};
+
+TDIR *tfsOpendir(const char *rname) {
+  TDIR *tdir = (TDIR *)calloc(1, sizeof(*tdir));
+  if (tdir == NULL) {
+    terrno = TSDB_CODE_FS_OUT_OF_MEMORY;
+    return NULL;
+  }
+
+  tfsInitDiskIter(&(tdir->iter));
+  strncpy(tdir->dirname, rname, TSDB_FILENAME_LEN);
+
+  if (tfsOpendirImpl(tdir) < 0) {
+    free(tdir);
+    return NULL;
+  }
+
+  return tdir;
+}
+
+const TFILE *tfsReaddir(TDIR *tdir) {
+  if (tdir == NULL || tdir->dir == NULL) return NULL;
+  char bname[TSDB_FILENAME_LEN] = "\0";
+
+  while (true) {
+    struct dirent *dp = NULL;
+    dp = readdir(tdir->dir);
+    if (dp != NULL) {
+      snprintf(bname, TSDB_FILENAME_LEN, "%s/%s", tdir->dirname, dp->d_name);
+      tfsInitFile(&(tdir->tfile), tdir->level, tdir->id, bname);
+      return &(tdir->tfile);
+    }
+
+    if (tfsOpendirImpl(tdir) < 0) {
+      return NULL;
+    }
+
+    if (tdir->dir == NULL) {
+      terrno = TSDB_CODE_SUCCESS;
+      return NULL;
+    }
+  }
+}
+
+void tfsClosedir(TDIR *tdir) {
+  if (tdir) {
+    if (tdir->dir != NULL) {
+      closedir(tdir->dir);
+      tdir->dir = NULL;
+    }
+    free(tdir);
+  }
+}
+
+// Static functions
 static int tfsLock() {
   int code = pthread_mutex_lock(&(pfs->lock));
   if (code != 0) {
@@ -229,7 +317,7 @@ static int tfsCheckAndFormatCfg(SDiskCfg *pCfg) {
   char        dirName[TSDB_FILENAME_LEN] = "\0";
   struct stat pstat;
 
-  if (pCfg->level < 0 || pCfg->level >= TSDB_MAX_TIER) {
+  if (pCfg->level < 0 || pCfg->level >= TSDB_MAX_TIERS) {
     fError("failed to mount %s to FS since invalid level %d", pCfg->dir, pCfg->level);
     terrno = TSDB_CODE_FS_INVLD_CFG;
     return -1;
@@ -336,4 +424,58 @@ static SDisk *tfsGetDiskByName(const char *dir) {
   ASSERT(pDisk != NULL);
 
   return pDisk;
-}
\ No newline at end of file
+}
+
+static int tfsOpendirImpl(TDIR *tdir) {
+  SDisk *pDisk = NULL;
+  char   adir[TSDB_FILENAME_LEN] = "\0";
+
+  if (tdir->dir != NULL) {
+    closedir(tdir->dir);
+    tdir->dir = NULL;
+  }
+
+  while (true) {
+    pDisk = tfsNextDisk(&(tdir->iter));
+    if (pDisk == NULL) return 0;
+
+    tdir->level = DISK_LEVEL(pDisk);
+    tdir->id = DISK_ID(pDisk);
+
+    snprintf(adir, TSDB_FILENAME_LEN, "%s/%s", DISK_DIR(pDisk), tdir->dirname);
+    tdir->dir = opendir(adir);
+    if (tdir->dir != NULL) break;
+  }
+
+  return 0;
+}
+
+static void tfsInitDiskIter(SDiskIter *pIter) { pIter->pDisk = TFS_DISK_AT(0, 0); }
+
+static SDisk *tfsNextDisk(SDiskIter *pIter) {
+  SDisk *pDisk = pIter->pDisk;
+
+  if (pDisk == NULL) return NULL;
+
+  int level = DISK_LEVEL(pDisk);
+  int id = DISK_ID(pDisk);
+
+  id++;
+  if (id < TIER_NDISKS(TFS_TIER_AT(level))) {
+    pIter->pDisk = TFS_DISK_AT(level, id);
+    ASSERT(pIter->pDisk != NULL);
+  } else {
+    level++;
+    id = 0;
+    if (level < TFS_NLEVEL()) {
+      pIter->pDisk = TFS_DISK_AT(level, id);
+      ASSERT(pIter->pDisk != NULL);
+    } else {
+      pIter->pDisk = NULL;
+    }
+  }
+
+  return pDisk;
+}
+
+#pragma GCC diagnostic pop
\ No newline at end of file
diff --git a/src/tfs/src/ttier.c b/src/tfs/src/ttier.c
index 28c45d28e7b9025c111a548f7419ba9e21f63c17..8002bf24220746dde5979a0f1979d973c562ba44 100644
--- a/src/tfs/src/ttier.c
+++ b/src/tfs/src/ttier.c
@@ -14,14 +14,15 @@
  */
 #include "os.h"
 
-#include "tfsint.h"
+#include "taosdef.h"
 #include "taoserror.h"
+#include "tfsint.h"
 
 // PROTECTED ==========================================
 void tfsInitTier(STier *pTier, int level) { pTier->level = level; }
 
 void tfsDestroyTier(STier *pTier) {
-  for (int id = 0; id < TSDB_MAX_DISK_PER_TIER; id++) {
+  for (int id = 0; id < TSDB_MAX_DISKS_PER_TIER; id++) {
     DISK_AT_TIER(pTier, id) = tfsFreeDisk(DISK_AT_TIER(pTier, id));
   }
   pTier->ndisk = 0;
@@ -31,7 +32,7 @@ SDisk *tfsMountDiskToTier(STier *pTier, SDiskCfg *pCfg) {
   ASSERT(pTier->level == pCfg->level);
   int id = 0;
 
-  if (TIER_NDISKS(pTier) >= TSDB_MAX_DISK_PER_TIER) {
+  if (TIER_NDISKS(pTier) >= TSDB_MAX_DISKS_PER_TIER) {
     terrno = TSDB_CODE_FS_TOO_MANY_MOUNT;
     return NULL;
   }
@@ -41,7 +42,7 @@ SDisk *tfsMountDiskToTier(STier *pTier, SDiskCfg *pCfg) {
       id = pTier->ndisk;
     } else {
       id = pTier->ndisk + 1;
-      if (id >= TSDB_MAX_DISK_PER_TIER) {
+      if (id >= TSDB_MAX_DISKS_PER_TIER) {
         terrno = TSDB_CODE_FS_TOO_MANY_MOUNT;
         return NULL;
       }
diff --git a/src/tsdb/inc/tsdbMain.h b/src/tsdb/inc/tsdbMain.h
index c2581ff55b4c2e25732ec73a0af46a50cde9508c..5757cde2aa7ca87c159d95c07dd0f8cd6d40d07d 100644
--- a/src/tsdb/inc/tsdbMain.h
+++ b/src/tsdb/inc/tsdbMain.h
@@ -189,7 +189,7 @@ typedef struct {
 } STsdbFileInfo;
 
 typedef struct {
-  TFSFILE       file;
+  TFILE         file;
   STsdbFileInfo info;
   int           fd;
 } SFile;
diff --git a/src/tsdb/src/tsdbFile.c b/src/tsdb/src/tsdbFile.c
index ac73b381464774df98d25f2d8c61fa40f084b4ed..238351b350d223139959966a60a98551f1c02fb8 100644
--- a/src/tsdb/src/tsdbFile.c
+++ b/src/tsdb/src/tsdbFile.c
@@ -67,14 +67,14 @@ int tsdbOpenFileH(STsdbRepo *pRepo) { // TODO
   char dataDir[TSDB_FILENAME_LEN] = "\0";
 
   // 1. scan and get all files corresponds
-  TFSDIR *tdir = NULL;
+  TDIR *tdir = NULL;
   char    fname[TSDB_FILENAME_LEN] = "\0";
   regex_t regex = {0};
   int     code = 0;
   int     vid = 0;
   int     fid = 0;
 
-  const TFSFILE *pfile = NULL;
+  const TFILE *pfile = NULL;
 
   code = regcomp(&regex, "^v[0-9]+f[0-9]+\\.(head|data|last|h|d|l)$", REG_EXTENDED);
   if (code != 0) {
@@ -82,12 +82,12 @@ int tsdbOpenFileH(STsdbRepo *pRepo) { // TODO
   }
 
   snprintf(dataDir, TSDB_FILENAME_LEN, "vnode/vnode%d/tsdb/data", REPO_ID(pRepo));
-  tdir = tfsOpenDir(dataDir);
+  tdir = tfsOpendir(dataDir);
   if (tdir == NULL) {
     // TODO: deal the error
   }
 
-  while ((pfile = tfsReadDir(tdir)) != NULL) {
+  while ((pfile = tfsReaddir(tdir)) != NULL) {
     tfsBaseName(pfile, fname);
 
     if (strcmp(fname, ".") == 0 || strcmp(fname, "..") == 0) continue;
diff --git a/src/vnode/src/vnodeMain.c b/src/vnode/src/vnodeMain.c
index 86fdd0de4aa6bfad475bf98954fce15893b75d33..0f51e2ed3b9e22823560c3b117f802189706ecf0 100644
--- a/src/vnode/src/vnodeMain.c
+++ b/src/vnode/src/vnodeMain.c
@@ -102,7 +102,7 @@ int32_t vnodeCreate(SCreateVnodeMsg *pVnodeCfg) {
     return TSDB_CODE_SUCCESS;
   }
 
-  if (tfsCreateDir("vnode") < 0) {
+  if (tfsMkdir("vnode") < 0) {
     vError("vgId:%d, failed to create vnode dir, reason:%s", pVnodeCfg->cfg.vgId, tstrerror(terrno));
     return terrno;
   }
@@ -112,7 +112,7 @@ int32_t vnodeCreate(SCreateVnodeMsg *pVnodeCfg) {
 
   char vnodeDir[TSDB_FILENAME_LEN] = "\0";
   snprintf(vnodeDir, TSDB_FILENAME_LEN, "vnode%d", pVnodeCfg->cfg.vgId);
-  if (tfsCreateDir(vnodeDir) < 0) {
+  if (tfsMkdir(vnodeDir) < 0) {
     vError("vgId:%d, failed to create vnode %d dir, reason:%s", pVnodeCfg->cfg.vgId, strerror(errno));
     return terrno;
   }
@@ -442,11 +442,11 @@ void vnodeRelease(void *vparam) {
     if (0 == tsEnableVnodeBak) {
       vInfo("vgId:%d, vnode backup not enabled", pVnode->vgId);
     } else {
-      tfsRemoveDir(newDir);
+      tfsRmdir(newDir);
       tfsRename(rootDir, newDir);
     }
 
-    tfsRemoveDir(rootDir);
+    tfsRmdir(rootDir);
     dnodeSendStatusMsgToMnode();
   }