diff --git a/src/vnode/src/vnodeMain.c b/src/vnode/src/vnodeMain.c
index 7308027817dd2a2d05ca747496f0f7ccc6687b9d..2d5ec98a807900adf36e17e8f299d85a1c0101bc 100644
--- a/src/vnode/src/vnodeMain.c
+++ b/src/vnode/src/vnodeMain.c
@@ -303,8 +303,8 @@ int32_t vnodeOpen(int32_t vnode, char *rootDir) {
   }
 
   sprintf(temp, "%s/wal", rootDir);
-  pVnode->wal = walOpen(temp, &pVnode->walCfg);
   pVnode->walCfg.vgId = pVnode->vgId;
+  pVnode->wal = walOpen(temp, &pVnode->walCfg);
   if (pVnode->wal == NULL) { 
     vnodeCleanUp(pVnode);
     return terrno;
diff --git a/src/wal/inc/walInt.h b/src/wal/inc/walInt.h
index 3c34c68f83d77c771c777ce5ddf188081ff8c8b9..8b5784d1cee1e285d2361fe25260e38cdf4044bd 100644
--- a/src/wal/inc/walInt.h
+++ b/src/wal/inc/walInt.h
@@ -32,7 +32,7 @@ extern int32_t wDebugFlag;
 #define wTrace(...) { if (wDebugFlag & DEBUG_TRACE) { taosPrintLog("WAL ", wDebugFlag, __VA_ARGS__); }}
 
 #define WAL_PREFIX     "wal"
-#define WAL_PREFIX_LEN 4
+#define WAL_PREFIX_LEN 3
 #define WAL_REFRESH_MS 1000
 #define WAL_MAX_SIZE   (1024 * 1024)
 #define WAL_SIGNATURE  ((uint32_t)(0xFAFBFDFE))
diff --git a/src/wal/src/walMgmt.c b/src/wal/src/walMgmt.c
index b1e32496cc8254f4d4496a3e1bed6d3facd1a620..72c0ef21a207b52029a489263b7c50ffe61bc187 100644
--- a/src/wal/src/walMgmt.c
+++ b/src/wal/src/walMgmt.c
@@ -43,7 +43,7 @@ int32_t walInit() {
 
   int32_t code = walCreateThread();
   if (code != TSDB_CODE_SUCCESS) {
-    wError("failed to init wal module, reason:%s", tstrerror(code));
+    wError("failed to init wal module since %s", tstrerror(code));
     return code;
   }
 
@@ -87,8 +87,7 @@ void *walOpen(char *path, SWalCfg *pCfg) {
   }
 
   atomic_add_fetch_32(&tsWal.num, 1);
-  wDebug("vgId:%d, wal:%p is opened, level:%d period:%d path:%s", pWal->vgId, pWal, pWal->level, pWal->fsyncPeriod,
-         pWal->path);
+  wDebug("vgId:%d, wal:%p is opened, level:%d fsyncPeriod:%d", pWal->vgId, pWal, pWal->level, pWal->fsyncPeriod);
 
   return pWal;
 }
@@ -120,8 +119,8 @@ void walClose(void *handle) {
   SWal *pWal = handle;
   taosClose(pWal->fd);
 
-  if (pWal->keep == 0) {
-    snprintf(pWal->name, sizeof(pWal->name), "%s/%s%" PRIu64, pWal->path, WAL_PREFIX, pWal->fileId);
+  if (!pWal->keep) {
+    snprintf(pWal->name, sizeof(pWal->name), "%s/%s%" PRId64, pWal->path, WAL_PREFIX, pWal->fileId);
     if (remove(pWal->name) < 0) {
       wError("vgId:%d, wal:%p file:%s, failed to remove", pWal->vgId, pWal, pWal->name);
     } else {
@@ -137,11 +136,11 @@ void walClose(void *handle) {
 static int32_t walInitObj(SWal *pWal) {
   if (taosMkDir(pWal->path, 0755) != 0) {
     terrno = TAOS_SYSTEM_ERROR(errno);
-    wError("vgId:%d, wal:%s, failed to create directory, reason:%s", pWal->vgId, pWal->path, strerror(errno));
+    wError("vgId:%d, file:%s, failed to create directory since %s", pWal->vgId, pWal->path, strerror(errno));
     return terrno;
   }
 
-  if (pWal->keep == 1) {
+  if (pWal->keep) {
     return TSDB_CODE_SUCCESS;
   }
 
@@ -149,11 +148,11 @@ static int32_t walInitObj(SWal *pWal) {
 
   if (pWal && pWal->fd < 0) {
     terrno = TAOS_SYSTEM_ERROR(errno);
-    wError("vgId:%d, wal:%s, failed to open file, reason:%s", pWal->vgId, pWal->path, strerror(errno));
+    wError("vgId:%d, file:%s, failed to open file since %s", pWal->vgId, pWal->path, strerror(errno));
     return terrno;
   }
 
-  wDebug("vgId:%d, wal:%s, is initialized", pWal->vgId, pWal->name);
+  wDebug("vgId:%d, file is initialized", pWal->vgId);
   return TSDB_CODE_SUCCESS;
 }
 
@@ -192,7 +191,7 @@ static void walFsyncAll() {
       wTrace("vgId:%d, do fsync, level:%d seq:%d rseq:%d", pWal->vgId, pWal->level, pWal->fsyncSeq, tsWal.seq);
       int32_t code = fsync(pWal->fd);
       if (code != 0) {
-        wError("vgId:%d, wal:%s, fsync failed, reason:%s", pWal->vgId, pWal->name, strerror(code));
+        wError("vgId:%d, file:%s, fsync failed since %s", pWal->vgId, pWal->name, strerror(code));
       }
     }
     pWal = taosIterateRef(tsWal.refId, pWal);
@@ -215,7 +214,7 @@ static int32_t walCreateThread() {
   pthread_attr_setdetachstate(&thAttr, PTHREAD_CREATE_JOINABLE);
 
   if (pthread_create(&tsWal.thread, &thAttr, walThreadFunc, NULL) != 0) {
-    wError("failed to create wal thread, reason:%s", strerror(errno));
+    wError("failed to create wal thread since %s", strerror(errno));
     return TAOS_SYSTEM_ERROR(errno);
   }
 
diff --git a/src/wal/src/walWrite.c b/src/wal/src/walWrite.c
index 6c3c97a0e9b38c2f78f776e3b7d793dda03ef921..45f00def06a0846ad21987fb361372db4fe7c1d7 100644
--- a/src/wal/src/walWrite.c
+++ b/src/wal/src/walWrite.c
@@ -36,34 +36,34 @@ int32_t walRenew(void *handle) {
 
   if (pWal->fd >= 0) {
     close(pWal->fd);
-    wDebug("vgId:%d, wal:%s, it is closed", pWal->vgId, pWal->name);
+    wDebug("vgId:%d, file:%s, it is closed", pWal->vgId, pWal->name);
   }
 
-  uint64_t lastId = pWal->fileId;
+  int64_t lastId = pWal->fileId;
   if (pWal->keep) {
     pWal->fileId = 0;
   } else {
     pWal->fileId = taosGetTimestampUs();
   }
 
-  snprintf(pWal->name, sizeof(pWal->name), "%s/%s%" PRIu64, pWal->path, WAL_PREFIX, pWal->fileId);
+  snprintf(pWal->name, sizeof(pWal->name), "%s/%s%" PRId64, pWal->path, WAL_PREFIX, pWal->fileId);
   pWal->fd = open(pWal->name, O_WRONLY | O_CREAT, S_IRWXU | S_IRWXG | S_IRWXO);
 
   if (pWal->fd < 0) {
     code = TAOS_SYSTEM_ERROR(errno);
-    wError("vgId:%d, wal:%s, failed to open since %s", pWal->vgId, pWal->name, strerror(errno));
+    wError("vgId:%d, file:%s, failed to open since %s", pWal->vgId, pWal->name, strerror(errno));
   } else {
-    wDebug("vgId:%d, wal:%s, it is created", pWal->vgId, pWal->name);
+    wDebug("vgId:%d, file:%s, it is created", pWal->vgId, pWal->name);
   }
 
-  if (pWal->keep != 1 && lastId != -1) {
+  if (!pWal->keep && lastId != -1) {
     // remove last wal file
     char name[TSDB_FILENAME_LEN + 20];
-    snprintf(name, sizeof(name), "%s/%s%" PRIu64, pWal->path, WAL_PREFIX, lastId);
+    snprintf(name, sizeof(name), "%s/%s%" PRId64, pWal->path, WAL_PREFIX, lastId);
     if (remove(name) < 0) {
-      wError("vgId:%d, wal:%s, failed to remove since %s", pWal->vgId, pWal->name, strerror(errno));
+      wError("vgId:%d, file:%s, failed to remove since %s", pWal->vgId, name, strerror(errno));
     } else {
-      wDebug("vgId:%d, wal:%s, it is removed", pWal->vgId, pWal->name);
+      wDebug("vgId:%d, file:%s, it is removed", pWal->vgId, name);
     }
   }
 
@@ -88,9 +88,10 @@ int32_t walWrite(void *handle, SWalHead *pHead) {
 
   if (taosTWrite(pWal->fd, pHead, contLen) != contLen) {
     code = TAOS_SYSTEM_ERROR(errno);
-    wError("vgId:%d, wal:%s, failed to write since %s", pWal->vgId, pWal->name, strerror(errno));
+    wError("vgId:%d, file:%s, failed to write since %s", pWal->vgId, pWal->name, strerror(errno));
   } else {
     pWal->version = pHead->version;
+    wTrace("vgId:%d, write version:%" PRId64 ", fileId:%" PRId64, pWal->vgId, pWal->version, pWal->fileId);
   }
 
   ASSERT(contLen == pHead->len + sizeof(SWalHead));
@@ -104,7 +105,7 @@ void walFsync(void *handle) {
 
   if (pWal->fsyncPeriod == 0) {
     if (fsync(pWal->fd) < 0) {
-      wError("vgId:%d, wal:%s, fsync failed since %s", pWal->vgId, pWal->name, strerror(errno));
+      wError("vgId:%d, file:%s, fsync failed since %s", pWal->vgId, pWal->name, strerror(errno));
     }
   }
 }
@@ -124,16 +125,23 @@ int32_t walRestore(void *handle, void *pVnode, int32_t (*writeFp)(void *, void *
     char *fileName = ent->d_name;
 
     if (strncmp(fileName, WAL_PREFIX, WAL_PREFIX_LEN) == 0) {
-      uint64_t fileId = atoll(fileName + WAL_PREFIX_LEN);
+      int64_t fileId = atoll(fileName + WAL_PREFIX_LEN);
       if (fileId == pWal->fileId) continue;
 
-      wDebug("vgId:%d, wal:%s, will be restored", pWal->vgId, fileName);
+      char walName[WAL_FILE_LEN];
+      snprintf(walName, sizeof(pWal->name), "%s/%s%" PRId64, pWal->path, WAL_PREFIX, fileId);
 
-      int32_t code = walRestoreWalFile(pWal, pVnode, writeFp, fileName);
+      wDebug("vgId:%d, file:%s, will be restored", pWal->vgId, walName);
+      int32_t code = walRestoreWalFile(pWal, pVnode, writeFp, walName);
       if (code != TSDB_CODE_SUCCESS) continue;
 
-      wInfo("vgId:%d, wal:%s, restore success, remove this file", pWal->vgId, fileName);
-      remove(fileName);
+      
+      if (!pWal->keep) {
+        wDebug("vgId:%d, file:%s, restore success, remove this file", pWal->vgId, walName);
+        remove(walName);
+      } else {
+        wDebug("vgId:%d, file:%s, restore success and keep it", pWal->vgId, walName);
+      }
 
       count++;
     }
@@ -142,6 +150,7 @@ int32_t walRestore(void *handle, void *pVnode, int32_t (*writeFp)(void *, void *
 
   if (pWal->keep) {
     if (count == 0) {
+      wDebug("vgId:%d, file:%s not exist, renew it", pWal->vgId, pWal->name);
       return walRenew(pWal);
     } else {
       // open the existing WAL file in append mode
@@ -149,9 +158,10 @@ int32_t walRestore(void *handle, void *pVnode, int32_t (*writeFp)(void *, void *
       snprintf(pWal->name, sizeof(pWal->name), "%s/%s%" PRId64, pWal->path, WAL_PREFIX, pWal->fileId);
       pWal->fd = open(pWal->name, O_WRONLY | O_CREAT | O_APPEND, S_IRWXU | S_IRWXG | S_IRWXO);
       if (pWal->fd < 0) {
-        wError("vgId:%d, wal:%s, failed to open file, reason:%s", pWal->vgId, pWal->name, strerror(errno));
+        wError("vgId:%d, file:%s, failed to open since %s", pWal->vgId, pWal->name, strerror(errno));
         return TAOS_SYSTEM_ERROR(errno);
       }
+      wDebug("vgId:%d, file:%s open success", pWal->vgId, pWal->name);
     }
   }
 
@@ -176,18 +186,18 @@ static int32_t walRestoreWalFile(SWal *pWal, void *pVnode, FWalWrite writeFp, ch
   int32_t size = WAL_MAX_SIZE;
   void *  buffer = tmalloc(size);
   if (buffer == NULL) {
-    wError("vgId:%d, wal:%s, failed to open for restore since %s", pWal->vgId, name, strerror(errno));
+    wError("vgId:%d, file:%s, failed to open for restore since %s", pWal->vgId, name, strerror(errno));
     return TAOS_SYSTEM_ERROR(errno);
   }
 
   int32_t fd = open(name, O_RDWR);
   if (fd < 0) {
-    wError("vgId:%d, wal:%s, failed to open for restore since %s", pWal->vgId, name, strerror(errno));
+    wError("vgId:%d, file:%s, failed to open for restore since %s", pWal->vgId, name, strerror(errno));
     tfree(buffer);
     return TAOS_SYSTEM_ERROR(errno);
   }
 
-  wDebug("vgId:%d, wal:%s, start to restore", pWal->vgId, name);
+  wDebug("vgId:%d, file:%s, start to restore", pWal->vgId, name);
 
   int32_t   code = TSDB_CODE_SUCCESS;
   size_t    offset = 0;
@@ -198,13 +208,13 @@ static int32_t walRestoreWalFile(SWal *pWal, void *pVnode, FWalWrite writeFp, ch
     if (ret == 0) break;
 
     if (ret < 0) {
-      wError("vgId:%d, wal:%s, failed to read wal head part since %s", pWal->vgId, name, strerror(errno));
+      wError("vgId:%d, file:%s, failed to read wal head part since %s", pWal->vgId, name, strerror(errno));
       code = TAOS_SYSTEM_ERROR(errno);
       break;
     }
 
     if (ret < sizeof(SWalHead)) {
-      wError("vgId:%d, wal:%s, failed to read wal head since %s, read size:%d, skip the rest of file", pWal->vgId,
+      wError("vgId:%d, file:%s, failed to read wal head since %s, read size:%d, skip the rest of file", pWal->vgId,
              name, strerror(errno), ret);
       taosFtruncate(fd, offset);
       fsync(fd);
@@ -212,7 +222,7 @@ static int32_t walRestoreWalFile(SWal *pWal, void *pVnode, FWalWrite writeFp, ch
     }
 
     if (!taosCheckChecksumWhole((uint8_t *)pHead, sizeof(SWalHead))) {
-      wError("vgId:%d, wal:%s, wal head cksum is messed up, skip the rest of file", pWal->vgId, name);
+      wError("vgId:%d, file:%s, wal head cksum is messed up, skip the rest of file", pWal->vgId, name);
       code = TSDB_CODE_WAL_FILE_CORRUPTED;
       ASSERT(false);
       break;
@@ -222,7 +232,7 @@ static int32_t walRestoreWalFile(SWal *pWal, void *pVnode, FWalWrite writeFp, ch
       size = sizeof(SWalHead) + pHead->len;
       buffer = realloc(buffer, size);
       if (buffer == NULL) {
-        wError("vgId:%d, wal:%s, failed to open for restore since %s", pWal->vgId, name, strerror(errno));
+        wError("vgId:%d, file:%s, failed to open for restore since %s", pWal->vgId, name, strerror(errno));
         code = TAOS_SYSTEM_ERROR(errno);
         break;
       }
@@ -232,13 +242,13 @@ static int32_t walRestoreWalFile(SWal *pWal, void *pVnode, FWalWrite writeFp, ch
 
     ret = taosTRead(fd, pHead->cont, pHead->len);
     if (ret < 0) {
-      wError("vgId:%d, wal:%s failed to read wal body part since %s", pWal->vgId, name, strerror(errno));
+      wError("vgId:%d, file:%s failed to read wal body part since %s", pWal->vgId, name, strerror(errno));
       code = TAOS_SYSTEM_ERROR(errno);
       break;
     }
 
     if (ret < pHead->len) {
-      wError("vgId:%d, wal:%s, failed to read body since %s, read size:%d len:%d , skip the rest of file", pWal->vgId,
+      wError("vgId:%d, file:%s, failed to read body since %s, read size:%d len:%d , skip the rest of file", pWal->vgId,
              name, strerror(errno), ret, pHead->len);
       taosFtruncate(fd, offset);
       fsync(fd);
@@ -248,6 +258,9 @@ static int32_t walRestoreWalFile(SWal *pWal, void *pVnode, FWalWrite writeFp, ch
     offset = offset + sizeof(SWalHead) + pHead->len;
 
     if (pWal->keep) pWal->version = pHead->version;
+
+    wTrace("vgId:%d, restore version:%" PRIu64 ", fileId:%" PRId64, pWal->vgId, pWal->version, pWal->fileId);
+
     (*writeFp)(pVnode, pHead, TAOS_QTYPE_WAL);
   }
 
@@ -279,7 +292,7 @@ static int32_t walGetNextFile(SWal *pWal, int64_t lastFileId, int64_t *nexFileId
     char *fileName = ent->d_name;
 
     if (strncmp(fileName, WAL_PREFIX, WAL_PREFIX_LEN) == 0) {
-      uint64_t fileId = atoll(fileName + WAL_PREFIX_LEN);
+      int64_t fileId = atoll(fileName + WAL_PREFIX_LEN);
       if (fileId <= lastFileId) continue;
 
       if (fileId < nearFileId) {