diff --git a/src/common/src/tmount.c b/src/common/src/tmount.c
deleted file mode 100644
index e4039616240669140904b419f410ae3181a0baae..0000000000000000000000000000000000000000
--- a/src/common/src/tmount.c
+++ /dev/null
@@ -1,424 +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 "hash.h"
-#include "taosdef.h"
-#include "taoserror.h"
-#include "tulog.h"
-#include "tutil.h"
-
-typedef struct {
-  uint64_t size;
-  uint64_t free;
-  uint64_t nfiles;
-} SDiskMeta;
-
-typedef struct {
-  int       level;
-  int       id;
-  char      dir[TSDB_FILENAME_LEN];
-  SDiskMeta dmeta;
-} SDisk;
-
-typedef struct {
-  uint64_t tsize;
-  uint64_t avail; // bytes
-} STiersMeta;
-
-typedef struct {
-  int    level;
-  int    nDisks;
-  SDisk *disks[TSDB_MAX_DISKS_PER_TIER];
-} STier;
-
-typedef struct STiers {
-  pthread_mutex_t lock;
-  STiersMeta      meta;
-  int             nLevel;
-  STier           tiers[TSDB_MAX_TIERS];
-  SHashObj *      map;
-} STiers;
-
-#define DISK_MIN_FREE_SPACE 30 * 1024 * 1024  // disk free space less than 100M will not create new file again
-#define DNODE_DISK_AVAIL(pDisk) ((pDisk)->dmeta.free > DISK_MIN_FREE_SPACE)
-#define TIER_AT_LEVEL(level) (pTiers->tiers + (level))
-#define DISK_AT(level, did) (TIER_AT_LEVEL(level)->disks[(did)])
-
-static struct STiers  tdTiers;
-static struct STiers *pTiers = &tdTiers;
-
-int tdInitMount(SDiskCfg *pDiskCfg, int ndisk) {
-  ASSERT(ndisk > 0);
-
-  memset((void *)pTiers, 0, sizeof(*pTiers));
-
-  int ret = pthread_mutex_init(&(pTiers->lock), NULL);
-  if (ret != 0) {
-    terrno = TAOS_SYSTEM_ERROR(ret);
-    return -1;
-  }
-
-  pTiers->map = taosHashInit(TSDB_MAX_TIERS * TSDB_MAX_DISKS_PER_TIER * 2,
-                             taosGetDefaultHashFunction(TSDB_DATA_TYPE_BINARY), false, HASH_NO_LOCK);
-  if (pTiers->map == NULL) {
-    terrno = TSDB_CODE_COM_OUT_OF_MEMORY;
-    tdDestroyMount();
-    return -1;
-  }
-
-  for (int idisk = 0; idisk < ndisk; idisk++) {
-    if (tdAddDisk(pDiskCfg + idisk) < 0) {
-      tdDestroyMount();
-      return -1;
-    }
-  }
-
-  if (tdCheckTiers() < 0) {
-    tdDestroyMount();
-    return -1;
-  }
-
-  return 0;
-}
-
-void tdDestroyMount() {
-  taosHashCleanup(pTiers->map);
-  pTiers->map = NULL;
-
-  pthread_mutex_destroy(&(pTiers->lock));
-
-  for (int level = TSDB_MAX_TIERS - 1; level >= 0; --level) {
-    for (int did = TSDB_MAX_DISKS_PER_TIER - 1; did >= 0; --did) {
-      if (DISK_AT(level, did)) {
-        free(DISK_AT(level, did));
-        DISK_AT(level, did) = NULL;
-      }
-    }
-  }
-}
-
-int tdUpdateDiskInfos() {
-  tdLockTiers(pTiers);
-
-  pTiers->meta.tsize = 0;
-  pTiers->meta.avail = 0;
-
-  for (int i = 0; i < pTiers->nLevel; i++) {
-    STier *pTier = pTiers->tiers + i;
-
-    for (int j = 0; j < pTier->nDisks; j++) {
-      SDisk *pDisk = pTier->disks[j];
-      if (tdUpdateDiskMeta(pDisk) < 0) {
-        tdUnLockTiers(pTiers);
-        return -1;
-      }
-
-      pTiers->meta.tsize += pDisk->dmeta.size;
-      pTiers->meta.avail += pDisk->dmeta.free;
-    }
-  }
-
-  tdUnLockTiers(pTiers);
-  return 0;
-}
-
-void tdGetPrimaryPath(char *dst) { strncpy(dst, DISK_AT(0, 0)->dir, TSDB_FILENAME_LEN); }
-
-static SDisk *tdGetPrimaryDisk() { return DISK_AT(0, 0); }
-
-static int tdCheckTiers() {
-  ASSERT(pTiers->nLevel > 0);
-  if (tdGetPrimaryDisk(pTiers) == NULL) {
-    terrno = TSDB_CODE_COM_LACK_PRIMARY_DISK;
-    return -1;
-  }
-
-  for (int i = 0; i < pTiers->nLevel; i++) {
-    if (pTiers->tiers[i].nDisks == 0) {
-      terrno = TSDB_CODE_COM_NO_DISK_AT_TIER;
-      return -1;
-    }
-  }
-
-  return 0;
-}
-
-static SDisk *tdAssignDisk(int level) {
-  ASSERT(level < pTiers->nLevel);
-
-  STier *pTier = pTiers->tiers + level;
-  SDisk *pDisk = NULL;
-
-  ASSERT(pTier->nDisks > 0);
-
-  tdLockTiers(pTiers);
-
-  for (int i = 0; i < pTier->nDisks; i++) {
-    SDisk *iDisk = pTier->disks[i];
-    if (tdUpdateDiskMeta(iDisk) < 0) return NULL;
-    if (DNODE_DISK_AVAIL(iDisk)) {
-      if (pDisk == NULL || pDisk->dmeta.nfiles > iDisk->dmeta.nfiles) {
-        pDisk = iDisk;
-      }
-    }
-  }
-
-  if (pDisk == NULL) {
-    terrno = TSDB_CODE_COM_NO_DISK_SPACE;
-    tdUnLockTiers(pTiers);
-    return NULL;
-  }
-
-  tdIncDiskFiles(pTiers, pDisk, false);
-
-  tdUnLockTiers(pTiers);
-
-  return pDisk;
-}
-
-static SDisk *tdGetDiskByName(char *dirName) {
-  char     fdirName[TSDB_FILENAME_LEN] = "\0";
-  SDiskID *pDiskID = NULL;
-
-  if (tfsFormatDir(dirName, fdirName) < 0) {
-    return NULL;
-  }
-
-  void *ptr = taosHashGet(pTiers->map, (void *)fdirName, strnlen(fdirName, TSDB_FILENAME_LEN));
-  if (ptr == NULL) return NULL;
-  pDiskID = (SDiskID *)ptr;
-
-  return tdGetDisk(pTiers, pDiskID->level, pDiskID->did);
-}
-
-static void tdIncDiskFiles(SDisk *pDisk, bool lock) {
-  if (lock) {
-    tdLockTiers(pTiers);
-  }
-
-  pDisk->dmeta.nfiles++;
-
-  if (lock) {
-    tdUnLockTiers(pTiers);
-  }
-}
-
-static void tdDecDiskFiles(SDisk *pDisk, bool lock) {
-  if (lock) {
-    tdLockTiers(pTiers);
-  }
-
-  pDisk->dmeta.nfiles--;
-
-  if (lock) {
-    tdUnLockTiers(pTiers);
-  }
-}
-
-static int tfsFormatDir(char *idir, char *odir) {
-  wordexp_t wep;
-
-  int code = wordexp(idir, &wep, 0);
-  if (code != 0) {
-    uError("failed to format dir %s since %s", idir, strerror(code));
-    terrno = TAOS_SYSTEM_ERROR(code);
-    return -1;
-  }
-
-  if (realpath(wep.we_wordv[0], odir) == NULL) {
-    uError("failed to format dir %s since %s", idir, strerror(errno));
-    terrno = TAOS_SYSTEM_ERROR(errno);
-    wordfree(&wep);
-    return -1;
-  }
-
-  wordfree(&wep);
-  return 0;
-}
-
-static int tdCheckDisk(char *dirName) {
-  if (access(dirName, W_OK | R_OK | F_OK) != 0) {
-    terrno = TAOS_SYSTEM_ERROR(errno);
-    return -1;
-  }
-
-  struct stat pstat;
-  if (stat(dirName, &pstat) < 0) {
-    terrno = TAOS_SYSTEM_ERROR(errno);
-    return -1;
-  }
-
-  if (S_ISDIR(pstat.st_mode)) {
-    return 0;
-  } else {
-    terrno = TSDB_CODE_COM_DISK_NOT_DIRECTORY;
-    return -1;
-  }
-}
-
-static int tdUpdateDiskMeta(SDisk *pDisk) {
-  SysDiskSize dstat;
-  if (taosGetDiskSize(pDisk->dir, &dstat) < 0) {
-    uError("failed to get dir %s information since %s", pDisk->dir, strerror(errno));
-    terrno = TAOS_SYSTEM_ERROR(errno);
-    return -1;
-  }
-
-  pDisk->dmeta.size = dstat.tsize;
-  pDisk->dmeta.free = dstat.avail;
-
-  return 0;
-}
-
-static int tdAddDisk(SDiskCfg *pCfg) {
-  char    dirName[TSDB_FILENAME_LEN] = "\0";
-  STier * pTier = NULL;
-  SDiskID diskid = {0};
-  SDisk * pDisk = NULL;
-
-  if (pCfg->level < 0 || pCfg->level >= TSDB_MAX_TIERS) {
-    terrno = TSDB_CODE_COM_INVALID_DISK_TIER;
-    uError("failed to add disk %s to tier %d level since %s", pCfg->dir, pCfg->level, tstrerror(terrno));
-    return -1;
-  }
-
-  if (tfsFormatDir(pCfg->dir, dirName) < 0) {
-    uError("failed to add disk %s to tier %d level since %s", pCfg->dir, pCfg->level, tstrerror(terrno));
-    return -1;
-  }
-
-  pTier = TIER_AT_LEVEL(pCfg->level);
-  diskid.level = pCfg->level;
-
-  if (pTier->nDisks >= TSDB_MAX_DISKS_PER_TIER) {
-    terrno = TSDB_CODE_COM_TOO_MANY_DISKS;
-    uError("failed to add disk %s to tier %d level since %s", pCfg->dir, pCfg->level, tstrerror(terrno));
-    return -1;
-  }
-
-  if (tdGetDiskByName(dirName) != NULL) {
-    terrno = TSDB_CODE_COM_DISK_ALREADY_EXISTS;
-    uError("failed to add disk %s to tier %d level since %s", pCfg->dir, pCfg->level, tstrerror(terrno));
-    return -1;
-  }
-
-  if (tdCheckDisk(dirName) < 0) {
-    uError("failed to add disk %s to tier %d level since %s", pCfg->dir, pCfg->level, tstrerror(terrno));
-    return -1;
-  }
-
-  if (pCfg->primary) {
-    if (pCfg->level != 0) {
-      terrno = TSDB_CODE_COM_INVALID_DISK_TIER;
-      uError("failed to add disk %s to tier %d level since %s", pCfg->dir, pCfg->level, tstrerror(terrno));
-      return -1;
-    }
-
-    if (tdGetPrimaryDisk() != NULL) {
-      terrno = TSDB_CODE_COM_DUPLICATE_PRIMARY_DISK;
-      uError("failed to add disk %s to tier %d level since %s", pCfg->dir, pCfg->level, tstrerror(terrno));
-      return -1;
-    }
-
-    diskid.did = 0;
-  } else {
-    if (level == 0) {
-      if (tdGetPrimaryDisk() != NULL) {
-        diskid.did = pTier->nDisks;
-      } else {
-        diskid.did = pTier->nDisks + 1;
-        if (diskid.did >= TSDB_MAX_DISKS_PER_TIER) {
-          terrno = TSDB_CODE_COM_TOO_MANY_DISKS;
-          uError("failed to add disk %s to tier %d level since %s", pCfg->dir, pCfg->level, tstrerror(terrno));
-          return -1;
-        }
-      }
-    } else {
-      diskid.did = pTier->nDisks;
-    }
-  }
-
-  pDisk = (SDisk *)calloc(1, sizeof(SDisk));
-  if (pDisk == NULL) {
-    terrno = TSDB_CODE_DND_OUT_OF_MEMORY;
-    uError("failed to add disk %s to tier %d level since %s", pCfg->dir, pCfg->level, tstrerror(terrno));
-    return -1;
-  }
-
-  strncpy(pDisk->dir, dirName, TSDB_FILENAME_LEN);
-  pDisk->level = diskid.level;
-  pDisk->did = diskid.did;
-
-  if (taosHashPut(pTiers->map, (void *)dirName, strnlen(dirName, TSDB_FILENAME_LEN), (void *)(&diskid),
-                  sizeof(diskid)) < 0) {
-    free(pDisk);
-    terrno = TSDB_CODE_DND_OUT_OF_MEMORY;
-    uError("failed to add disk %s to tier %d level since %s", pCfg->dir, pCfg->level, tstrerror(terrno));
-    return -1;
-  }
-
-  pTier->nDisks++;
-  pTier->disks[diskid.did] = pDisk;
-  pTiers->nLevel = MAX(pTiers->nLevel, level + 1);
-
-  return 0;
-}
-
-static void taosGetDisk() {
-  const double unit = 1024 * 1024 * 1024;
-  SysDiskSize  diskSize;
-
-  if (tscEmbedded) {
-    tdUpdateDiskInfos(tsDnodeTier);
-    tsTotalDataDirGB = (float)tsDnodeTier->meta.tsize / unit;
-    tsAvailDataDirGB = (float)tsDnodeTier->meta.avail / unit;
-  }
-
-  if (taosGetDiskSize(tsLogDir, &diskSize)) {
-    tsTotalLogDirGB = (float)diskSize.tsize / unit;
-    tsAvailLogDirGB = (float)diskSize.avail / unit;
-  }
-
-  if (taosGetDiskSize("/tmp", &diskSize)) {
-    tsTotalTmpDirGB = (float)diskSize.tsize / unit;
-    tsAvailTmpDirectorySpace = (float)diskSize.avail / unit;
-  }
-}
-
-static int tdLockTiers() {
-  int code = pthread_mutex_lock(&(pTiers->lock));
-  if (code != 0) {
-    terrno = TAOS_SYSTEM_ERROR(code);
-    return -1;
-  }
-  return 0;
-}
-
-static int tdUnLockTiers() {
-  int code = pthread_mutex_unlock(&(pTiers->lock));
-  if (code != 0) {
-    terrno = TAOS_SYSTEM_ERROR(code);
-    return -1;
-  }
-  return 0;
-}
-
-static SDisk *tdGetDisk(int level, int did) {
-  if (level < 0 || level >= pTiers->nLevel) return NULL;
-
-  if (did < 0 || did >= pTiers->tiers[level].nDisks) return NULL;
-
-  return pTiers->tiers[level].disks[did];
-}
\ No newline at end of file
diff --git a/src/dnode/src/dnodeMain.c b/src/dnode/src/dnodeMain.c
index b2c03cd02952ae30835c8cf6dbf8f86235ef99a4..8b2f9880585202d7fb8d7a34e33f96bbbc384d24 100644
--- a/src/dnode/src/dnodeMain.c
+++ b/src/dnode/src/dnodeMain.c
@@ -117,7 +117,7 @@ int32_t dnodeInitSystem() {
   signal(SIGPIPE, SIG_IGN);
 
   if (dnodeCreateDir(tsLogDir) < 0) {
-   printf("failed to create log dir: %s, reason: %s\n", tsLogDir, strerror(errno));
+   printf("failed to create dir: %s, reason: %s\n", tsLogDir, strerror(errno));
    return -1;
   }