diff --git a/src/common/src/tdisk.c b/src/common/src/tdisk.c
index 425a66058f..0c7d633773 100644
--- a/src/common/src/tdisk.c
+++ b/src/common/src/tdisk.c
@@ -99,7 +99,10 @@ int tdUpdateTiersInfo(SDnodeTier *pDnodeTier) {
 
     for (int j = 0; j < pTier->nDisks; j++) {
       SDisk *pDisk = pTier->disks[j];
-      if (tdUpdateDiskMeta(pDisk) < 0) return -1;
+      if (tdUpdateDiskMeta(pDisk) < 0) {
+        tdUnLockTiers(pDnodeTier);
+        return -1;
+      }
 
       pDnodeTier->meta.tsize += pDisk->dmeta.size;
       pDnodeTier->meta.avail += pDisk->dmeta.free;
diff --git a/src/os/inc/osFile.h b/src/os/inc/osFile.h
index dc19c8177c..75c2b749d1 100644
--- a/src/os/inc/osFile.h
+++ b/src/os/inc/osFile.h
@@ -34,6 +34,7 @@ int     taosFSendFileImp(FILE* out_file, FILE* in_file, int64_t* offset, int32_t
 #define taosTRead(fd, buf, count) taosTReadImp(fd, buf, count)
 #define taosTWrite(fd, buf, count) taosTWriteImp(fd, buf, count)
 #define taosLSeek(fd, offset, whence) lseek(fd, offset, whence)
+ssize_t taosTCopy(char *from, char *to);
 
 #ifdef TAOS_RANDOM_FILE_FAIL
   void taosSetRandomFileFailFactor(int factor);
diff --git a/src/os/src/detail/osFile.c b/src/os/src/detail/osFile.c
index 8f055dd812..429aab77e4 100644
--- a/src/os/src/detail/osFile.c
+++ b/src/os/src/detail/osFile.c
@@ -108,6 +108,39 @@ ssize_t taosTWriteImp(int fd, void *buf, size_t n) {
   return (ssize_t)n;
 }
 
+ssize_t taosTCopy(char *from, char *to) {
+  char    buffer[4096];
+  int     fidto = -1, fidfrom = -1;
+  ssize_t size = 0;
+  ssize_t bytes;
+
+  fidfrom = open(from, O_RDONLY);
+  if (fidfrom < 0) goto _err;
+
+  fidto = open(to, O_WRONLY | O_CREAT, 0755);
+  if (fidto < 0) goto _err;
+
+  while (true) {
+    bytes = taosTRead(fidfrom, buffer, sizeof(buffer));
+    if (bytes < 0) goto _err;
+    if (bytes == 0) break;
+
+    size += bytes;
+
+    if (taosTWrite(fidto, (void *)buffer, bytes) < bytes) goto _err;
+    if (bytes < sizeof(buffer)) break;
+  }
+
+  close(fidfrom);
+  close(fidto);
+  return size;
+
+_err:
+  if (fidfrom >= 0) close(fidfrom);
+  if (fidto >= 0) close(fidto);
+  return -1;
+}
+
 #ifndef TAOS_OS_FUNC_FILE_SENDIFLE
 ssize_t taosTSendFileImp(int dfd, int sfd, off_t *offset, size_t size) {
   size_t  leftbytes = size;
diff --git a/src/tsdb/src/tsdbFile.c b/src/tsdb/src/tsdbFile.c
index 365f4953c4..450ba879e8 100644
--- a/src/tsdb/src/tsdbFile.c
+++ b/src/tsdb/src/tsdbFile.c
@@ -471,11 +471,14 @@ int tsdbApplyRetention(STsdbRepo *pRepo, SFidGroup *pFidGroup) {
       nFileGroup.level = level;
       nFileGroup.did = pDisk->did;
 
+      char tsdbRootDir[TSDB_FILENAME_LEN];
+      tdGetTsdbRootDir(pDisk->dir, REPO_ID(pRepo), tsdbRootDir);
       for (int type = 0; type < TSDB_FILE_TYPE_MAX; type++) {
-        // TODO fileGroup.files[type].fname
+        tsdbGetDataFileName(tsdbRootDir, REPO_ID(pRepo), pGroup->fileId, type, nFileGroup.files[type].fname);
       }
 
       for (int type = 0; type < TSDB_FILE_TYPE_MAX; type++) {
+        if (taosTCopy(oFileGroup.files[type].fname, nFileGroup.files[type].fname) < 0) return -1;
       }
 
       pthread_rwlock_wrlock(&(pFileH->fhlock));