diff --git a/.gitignore b/.gitignore
index bb9a70e9b284194c308ff5a6d57bd3edfdce6799..77c52b2ee2d00da281cc6ddec32d4003c9b90c2b 100644
--- a/.gitignore
+++ b/.gitignore
@@ -64,4 +64,5 @@ CMakeError.log
 /out/isenseconfig/WSL-Clang-Debug
 /out/isenseconfig/WSL-GCC-Debug
 /test/cfg
-/src/.vs
+/src/.vs
+*.o
diff --git a/src/mnode/src/mnodeAcct.c b/src/mnode/src/mnodeAcct.c
index 9634d2c645d8be6a7cab1147b4a551b099209d53..7ea5188b96a47981f5c42e9c28389f8cd0410409 100644
--- a/src/mnode/src/mnodeAcct.c
+++ b/src/mnode/src/mnodeAcct.c
@@ -27,7 +27,7 @@
 
 void *  tsAcctSdb = NULL;
 static int32_t tsAcctUpdateSize;
-static void    mnodeCreateRootAcct();
+static int32_t mnodeCreateRootAcct();
 
 static int32_t mnodeAcctActionDestroy(SSdbOper *pOper) {
   SAcctObj *pAcct = pOper->pObj;
@@ -79,7 +79,11 @@ static int32_t mnodeAcctActionDecode(SSdbOper *pOper) {
 
 static int32_t mnodeAcctActionRestored() {
   if (dnodeIsFirstDeploy()) {
-    mnodeCreateRootAcct();
+    int32_t code = mnodeCreateRootAcct();
+    if (code != TSDB_CODE_SUCCESS) {
+      mError("failed to create root account, reason:%s", tstrerror(code));
+      return code;
+    }
   }
 
   acctInit();
@@ -161,9 +165,9 @@ void mnodeDropUserFromAcct(SAcctObj *pAcct, SUserObj *pUser) {
   mnodeDecAcctRef(pAcct);
 }
 
-static void mnodeCreateRootAcct() {
+static int32_t mnodeCreateRootAcct() {
   int32_t numOfAccts = sdbGetNumOfRows(tsAcctSdb);
-  if (numOfAccts != 0) return;
+  if (numOfAccts != 0) return TSDB_CODE_SUCCESS;
 
   SAcctObj *pAcct = malloc(sizeof(SAcctObj));
   memset(pAcct, 0, sizeof(SAcctObj));
@@ -190,7 +194,8 @@ static void mnodeCreateRootAcct() {
     .table = tsAcctSdb,
     .pObj = pAcct,
   };
-  sdbInsertRow(&oper);
+
+  return sdbInsertRow(&oper);
 }
 
 #ifndef _ACCT
diff --git a/src/mnode/src/mnodeMain.c b/src/mnode/src/mnodeMain.c
index 298d10993beee3262a5dbebc6184a8f5a40d8b73..57bb1b2bac5c0293aabec3e81c74d8661a89fd00 100644
--- a/src/mnode/src/mnodeMain.c
+++ b/src/mnode/src/mnodeMain.c
@@ -88,9 +88,9 @@ int32_t mnodeStartSystem() {
   }
 
   mPrint("starting to initialize mnode ...");
-  struct stat dirstat;
-  if (stat(tsMnodeDir, &dirstat) < 0) {
-    mkdir(tsMnodeDir, 0755);
+  if (mkdir(tsMnodeDir, 0755) != 0 && errno != EEXIST) {
+    mError("failed to init mnode dir:%s, reason:%s", tsMnodeDir, strerror(errno));
+    return -1;
   }
 
   dnodeAllocateMnodeWqueue();
diff --git a/src/mnode/src/mnodeShow.c b/src/mnode/src/mnodeShow.c
index 36e7d13a867b6c2ccae1044758eb1c63e4c66356..30f491ec032bbac8b54dade8b883f15e618520ab 100644
--- a/src/mnode/src/mnodeShow.c
+++ b/src/mnode/src/mnodeShow.c
@@ -316,7 +316,7 @@ static int32_t mnodeProcessConnectMsg(SMnodeMsg *pMsg) {
   }
 
   sprintf(pConnectRsp->acctId, "%x", pAcct->acctId);
-  strcpy(pConnectRsp->serverVersion, version);
+  memcpy(pConnectRsp->serverVersion, version, TSDB_VERSION_LEN);
   pConnectRsp->writeAuth = pUser->writeAuth;
   pConnectRsp->superAuth = pUser->superAuth;
   
diff --git a/src/vnode/src/vnodeMain.c b/src/vnode/src/vnodeMain.c
index 256ef3c72baf0ccc5dd0c39b1f6452a9dfd204d6..9ec982b1decf00be2043d4c68004943c41c93587 100644
--- a/src/vnode/src/vnodeMain.c
+++ b/src/vnode/src/vnodeMain.c
@@ -75,19 +75,29 @@ int32_t vnodeCreate(SMDCreateVnodeMsg *pVnodeCfg) {
     return TSDB_CODE_SUCCESS;
   }
 
-  mkdir(tsVnodeDir, 0755);
+  if (mkdir(tsVnodeDir, 0755) != 0 && errno != EEXIST) {
+    vError("vgId:%d, failed to create vnode, reason:%s dir:%s", pVnodeCfg->cfg.vgId, strerror(errno), tsVnodeDir);
+    if (errno == EACCES) {
+      return TSDB_CODE_VND_NO_DISK_PERMISSIONS;
+    } else if (errno == ENOSPC) {
+      return TSDB_CODE_VND_NO_DISKSPACE;
+    } else if (errno == ENOENT) {
+      return TSDB_CODE_VND_NO_SUCH_FILE_OR_DIR;
+    } else {
+      return TSDB_CODE_VND_INIT_FAILED;
+    }
+  }
 
   char rootDir[TSDB_FILENAME_LEN] = {0};
   sprintf(rootDir, "%s/vnode%d", tsVnodeDir, pVnodeCfg->cfg.vgId);
-  if (mkdir(rootDir, 0755) != 0) {
-    vPrint("vgId:%d, failed to create vnode, reason:%s dir:%s", pVnodeCfg->cfg.vgId, strerror(errno), rootDir);
+  if (mkdir(rootDir, 0755) != 0 && errno != EEXIST) {
+    vError("vgId:%d, failed to create vnode, reason:%s dir:%s", pVnodeCfg->cfg.vgId, strerror(errno), rootDir);
     if (errno == EACCES) {
       return TSDB_CODE_VND_NO_DISK_PERMISSIONS;
     } else if (errno == ENOSPC) {
       return TSDB_CODE_VND_NO_DISKSPACE;
     } else if (errno == ENOENT) {
       return TSDB_CODE_VND_NO_SUCH_FILE_OR_DIR;
-    } else if (errno == EEXIST) {
     } else {
       return TSDB_CODE_VND_INIT_FAILED;
     }