diff --git a/src/mds/common/mds_define.h b/src/mds/common/mds_define.h
index 8dd0655476..c61cb95e4a 100644
--- a/src/mds/common/mds_define.h
+++ b/src/mds/common/mds_define.h
@@ -47,6 +47,27 @@ const int kCsClientReturnFail = -5;
 // error code: chunkserver offline
 const int kCsClientCSOffline = -6;
 
+inline const char* PrintMdsDescByErrorCode(int code) {
+    switch (code) {
+        case kMdsSuccess:
+            return "MDS execution succeeded";
+        case kMdsFail:
+            return "MDS execution failed";
+        case kCsClientInternalError:
+            return "chunkserverclient internal error";
+        case kCsClientNotLeader:
+            return "chunkserverclient request is not from the leader";
+        case kRpcChannelInitFail:
+            return "brpc channel init fail";
+        case kRpcFail:
+            return "RPC fail or Chunkserverclient request return fail";
+        case kCsClientCSOffline:
+            return "chunkserver offline";
+        default:
+            return "undefied code";
+    }
+}
+
 // kStaledRequestTimeIntervalUs indicates the expiration time of the request
 // to prevent the request from being intercepted and played back
 const uint64_t kStaledRequestTimeIntervalUs = 15 * 1000 * 1000u;
diff --git a/src/mds/nameserver2/clean_core.cpp b/src/mds/nameserver2/clean_core.cpp
index 54f743c300..90704707a4 100644
--- a/src/mds/nameserver2/clean_core.cpp
+++ b/src/mds/nameserver2/clean_core.cpp
@@ -66,7 +66,7 @@ StatusCode CleanCore::CleanSnapShotFile(const FileInfo & fileInfo,
             if (ret != 0) {
                 LOG(ERROR) << "CleanSnapShotFile Error: "
                     << "DeleteChunkSnapshotOrCorrectSn Error"
-                    << ", ret = " << ret
+                    << ", ret = " << PrintMdsDescByErrorCode(ret)
                     << ", inodeid = " << fileInfo.id()
                     << ", filename = " << fileInfo.filename()
                     << ", correctSn = " << correctSn;
@@ -81,7 +81,8 @@ StatusCode CleanCore::CleanSnapShotFile(const FileInfo & fileInfo,
     StoreStatus ret =  storage_->DeleteSnapshotFile(fileInfo.parentid(),
                                                 fileInfo.filename());
     if (ret != StoreStatus::OK) {
-        LOG(INFO) << "delete snapshotfile error, retCode = " << ret;
+        LOG(INFO) << "delete snapshotfile error, retCode = "
+        << PrintStoreStatusByErrorCode(ret);
         progress->SetStatus(TaskStatus::FAILED);
         return StatusCode::kSnapshotFileDeleteError;
     } else {
@@ -123,7 +124,7 @@ StatusCode CleanCore::CleanFile(const FileInfo & commonFile,
         int ret = DeleteChunksInSegment(segment, commonFile.seqnum());
         if (ret != 0) {
             LOG(ERROR) << "Clean common File Error: "
-                       << ", ret = " << ret
+                       << ", ret = " << PrintMdsDescByErrorCode(ret)
                        << ", inodeid = " << commonFile.id()
                        << ", filename = " << commonFile.filename()
                        << ", sequenceNum = " << commonFile.seqnum();
@@ -153,7 +154,8 @@ StatusCode CleanCore::CleanFile(const FileInfo & commonFile,
     StoreStatus ret =  storage_->DeleteFile(commonFile.parentid(),
                                                    commonFile.filename());
     if (ret != StoreStatus::OK) {
-        LOG(INFO) << "delete common file error, retCode = " << ret;
+        LOG(INFO) << "delete common file error, retDesc = "
+        << PrintStoreStatusByErrorCode(ret);
         progress->SetStatus(TaskStatus::FAILED);
         return StatusCode::kCommonFileDeleteError;
     } else {
@@ -185,7 +187,8 @@ StatusCode CleanCore::CleanDiscardSegment(
     int ret = DeleteChunksInSegment(segment, seq);
     if (ret != 0) {
         LOG(ERROR) << "CleanDiscardSegment failed, DeleteChunk Error, ret = "
-                   << ret << ", filename = " << fileInfo.filename()
+                   << PrintMdsDescByErrorCode(ret)
+                   << ", filename = " << fileInfo.filename()
                    << ", inodeid = " << fileInfo.id()
                    << ", segment offset = " << segment.startoffset();
         progress->SetStatus(TaskStatus::FAILED);
@@ -229,7 +232,8 @@ int CleanCore::DeleteChunksInSegment(const PageFileSegment& segment,
             seq);
 
         if (ret != 0) {
-            LOG(ERROR) << "DeleteChunk failed, ret = " << ret
+            LOG(ERROR) << "DeleteChunk failed, ret = "
+                       << PrintMdsDescByErrorCode(ret)
                        << ", logicalpoolid = " << logicalPoolId
                        << ", copysetid = " << segment.chunks()[i].copysetid()
                        << ", chunkid = " << segment.chunks()[i].chunkid()
diff --git a/src/mds/nameserver2/clean_manager.cpp b/src/mds/nameserver2/clean_manager.cpp
index f0916b8003..fc71c45a52 100644
--- a/src/mds/nameserver2/clean_manager.cpp
+++ b/src/mds/nameserver2/clean_manager.cpp
@@ -89,7 +89,8 @@ bool CleanManager::RecoverCleanTasks(void) {
     std::vector<FileInfo> snapShotFiles;
     StoreStatus ret = storage_->LoadSnapShotFile(&snapShotFiles);
     if (ret != StoreStatus::OK) {
-        LOG(ERROR) << "Load SnapShotFile error, ret = " << ret;
+        LOG(ERROR) << "Load SnapShotFile error, ret = "
+        << PrintStoreStatusByErrorCode(ret);
         return false;
     }
 
@@ -104,7 +105,8 @@ bool CleanManager::RecoverCleanTasks(void) {
     StoreStatus ret1 = storage_->ListFile(RECYCLEBININODEID,
                         RECYCLEBININODEID + 1, &commonFiles);
     if (ret1 != StoreStatus::OK) {
-        LOG(ERROR) << "Load recylce bin file error, ret = " << ret1;
+        LOG(ERROR) << "Load recylce bin file error, ret = "
+        << PrintStoreStatusByErrorCode(ret1);
         return false;
     }
 
diff --git a/src/mds/nameserver2/curvefs.cpp b/src/mds/nameserver2/curvefs.cpp
index 5d5af4d75f..46f98235be 100644
--- a/src/mds/nameserver2/curvefs.cpp
+++ b/src/mds/nameserver2/curvefs.cpp
@@ -115,7 +115,8 @@ bool CurveFS::InitRecycleBinDir() {
         return true;
     } else {
         // internal error
-        LOG(INFO) << "InitRecycleBinDir error ,ret = " << ret;
+        LOG(INFO) << "InitRecycleBinDir error ,ret = "
+        << PrintStoreStatusByErrorCode(ret);
         return false;
     }
 }
@@ -206,7 +207,8 @@ StatusCode CurveFS::WalkPath(const std::string &fileName,
         } else if (ret == StoreStatus::KeyNotExist) {
             return StatusCode::kFileNotExists;
         } else {
-            LOG(ERROR) << "GetFile error, errcode = " << ret;
+            LOG(ERROR) << "GetFile error, errcode = "
+            << PrintStoreStatusByErrorCode(ret);
             return StatusCode::kStorageError;
         }
         // assert(fileInfo->parentid() != parentID);
@@ -680,7 +682,7 @@ StatusCode CurveFS::DeleteFile(const std::string & filename, uint64_t fileId,
         if (ret != StoreStatus::OK) {
             LOG(ERROR) << "delete file, file is directory and delete fail"
                        << ", filename = " << filename
-                       << ", ret = " << ret;
+                       << ", ret = " << PrintStoreStatusByErrorCode(ret);
             return StatusCode::kStorageError;
         }
 
@@ -729,7 +731,7 @@ StatusCode CurveFS::DeleteFile(const std::string & filename, uint64_t fileId,
             if (ret1 != StoreStatus::OK) {
                 LOG(ERROR) << "delete file, move file to recycle fail"
                         << ", filename = " << filename
-                        << ", ret = " << ret1;
+                        << ", ret = " << PrintStoreStatusByErrorCode(ret1);
                 return StatusCode::kStorageError;
             }
             LOG(INFO) << "file delete to recyclebin, fileName = " << filename
@@ -877,7 +879,8 @@ StatusCode CurveFS::RecoverFile(const std::string & originFileName,
 
     auto ret1 = storage_->RenameFile(recycleFileInfo, recoverFileInfo);
     if ( ret1 != StoreStatus::OK ) {
-        LOG(ERROR) << "storage_ recoverfile error, error = " << ret1;
+        LOG(ERROR) << "storage_ recoverfile error, error = "
+        << PrintStoreStatusByErrorCode(ret1);
         return StatusCode::kStorageError;
     }
     return StatusCode::kOK;
@@ -1124,7 +1127,7 @@ StatusCode CurveFS::RenameFile(const std::string & sourceFileName,
             LOG(ERROR) << "storage_ ReplaceFileAndRecycleOldFile error"
                         << ", sourceFileName = " << sourceFileName
                         << ", destFileName = " << destFileName
-                        << ", ret = " << ret1;
+                        << ", ret = " << PrintStoreStatusByErrorCode(ret1);
 
             return StatusCode::kStorageError;
         }
@@ -1138,7 +1141,8 @@ StatusCode CurveFS::RenameFile(const std::string & sourceFileName,
 
         auto ret = storage_->RenameFile(sourceFileInfo, destFileInfo);
         if ( ret != StoreStatus::OK ) {
-            LOG(ERROR) << "storage_ renamefile error, error = " << ret;
+            LOG(ERROR) << "storage_ renamefile error, error = "
+            << PrintStoreStatusByErrorCode(ret);
             return StatusCode::kStorageError;
         }
         return StatusCode::kOK;
@@ -1386,7 +1390,7 @@ StatusCode CurveFS::DeAllocateSegment(const std::string& fileName,
     if (storeRet != StoreStatus::OK) {
         LOG(WARNING) << "Storage CleanSegment return error, filename = "
                    << fileName << ", offset = " << offset
-                   << ", error = " << storeRet;
+                   << ", error = " << PrintStoreStatusByErrorCode(storeRet);
         return StatusCode::kStorageError;
     }
 
@@ -1508,7 +1512,8 @@ StatusCode CurveFS::ListSnapShotFile(const std::string & fileName,
         storeStatus == StoreStatus::OK) {
         return StatusCode::kOK;
     } else {
-        LOG(ERROR) << fileName << ", storage ListFile return = " << storeStatus;
+        LOG(ERROR) << fileName << ", storage ListFile return = "
+        << PrintStoreStatusByErrorCode(storeStatus);
         return StatusCode::kStorageError;
     }
 }
@@ -1702,7 +1707,8 @@ StatusCode CurveFS::GetSnapShotFileSegment(
                   << ", offset = " << offset;
         return StatusCode::kSegmentNotAllocated;
     } else {
-        LOG(ERROR) << "get segment fail, KInternalError, ret = " << storeRet
+        LOG(ERROR) << "get segment fail, KInternalError, ret = "
+        << PrintStoreStatusByErrorCode(storeRet)
                   << ", fileInfo.id() = "
                   << fileInfo.id()
                   << ", offset = " << offset;
@@ -2038,7 +2044,8 @@ StatusCode CurveFS::CheckPathOwnerInternal(const std::string &filename,
             LOG(WARNING) << paths[i] << " not exist";
             return StatusCode::kFileNotExists;
         } else {
-            LOG(ERROR) << "GetFile " << paths[i] << " error, errcode = " << ret;
+            LOG(ERROR) << "GetFile " << paths[i] << " error, errcode = "
+            << PrintStoreStatusByErrorCode(ret);
             return StatusCode::kStorageError;
         }
         tempParentID =  fileInfo.id();
@@ -2393,7 +2400,7 @@ StatusCode CurveFS::ListCloneSourceFileSegments(
                       "filename = "
                    << fileInfo->filename()
                    << ", source file name = " << fileInfo->clonesource()
-                   << ", ret = " << status;
+                   << ", ret = " << PrintStoreStatusByErrorCode(status);
         return StatusCode::kStorageError;
     }
 
diff --git a/src/mds/nameserver2/namespace_storage.h b/src/mds/nameserver2/namespace_storage.h
index df4e1fe0dd..0dfc26b2c1 100644
--- a/src/mds/nameserver2/namespace_storage.h
+++ b/src/mds/nameserver2/namespace_storage.h
@@ -51,6 +51,18 @@ enum class StoreStatus {
 };
 std::ostream& operator << (std::ostream & os, StoreStatus &s);
 
+inline const char* PrintStoreStatusByErrorCode(StoreStatus status) {
+    switch (status) {
+    case StoreStatus::OK:
+        return "OK";
+    case StoreStatus::KeyNotExist:
+        return "KeyNotExist";
+    case StoreStatus::InternalError:
+        return "InternalError";
+    default:
+        return "unknown status";
+    }
+}
 // TODO(hzsunjianliang): may be storage need high level abstraction
 // put the encoding internal, not external