diff --git a/frameworks/native/backup_ext/src/ext_backup_js.cpp b/frameworks/native/backup_ext/src/ext_backup_js.cpp
index 103bd8b0b6c06b6487ddbd4e2c24f1318c142fff..fa9ea8bb310dfb38178b514781caada552ff7777 100644
--- a/frameworks/native/backup_ext/src/ext_backup_js.cpp
+++ b/frameworks/native/backup_ext/src/ext_backup_js.cpp
@@ -852,8 +852,11 @@ int ExtBackupJs::CallJsMethod(const std::string &funcName,
     work->data = reinterpret_cast<void *>(param.get());
     HILOGI("Will execute current js method");
     int ret = uv_queue_work(
-        loop, work.get(), [](uv_work_t *work) {},
+        loop, work.get(), [](uv_work_t *work) {
+            HILOGI("Enter, %{public}zu", (size_t)work);
+        },
         [](uv_work_t *work, int status) {
+            HILOGI("AsyncWork Enter, %{public}zu", (size_t)work);
             CallJsParam *param = reinterpret_cast<CallJsParam *>(work->data);
             do {
                 if (param == nullptr) {
diff --git a/frameworks/native/backup_ext/src/ext_extension.cpp b/frameworks/native/backup_ext/src/ext_extension.cpp
index 77252b298ac621d30251438736c04a329537a8ef..2e6c7f9f358ca1b315ed92ae6b5afb9424792cf1 100644
--- a/frameworks/native/backup_ext/src/ext_extension.cpp
+++ b/frameworks/native/backup_ext/src/ext_extension.cpp
@@ -332,24 +332,26 @@ static ErrCode GetIncreFileHandleForSpecialVersion(const string &fileName)
     return ERR_OK;
 }
 
-static string GetIncrementalFileHandlePath(const string &fileName, const string &bundleName)
+static ErrCode GetIncrementalFileHandlePath(const string &fileName, const string &bundleName, std::string &tarName)
 {
     string path = string(BConstants::PATH_BUNDLE_BACKUP_HOME).append(BConstants::SA_BUNDLE_BACKUP_RESTORE);
     if (BFile::EndsWith(bundleName, BConstants::BUNDLE_FILE_MANAGER) && bundleName.size() == BConstants::FM_LEN) {
         if (mkdir(string(BConstants::PATH_FILEMANAGE_BACKUP_HOME).data(), S_IRWXU) && errno != EEXIST) {
-            string str = string("Failed to create .backup folder. ").append(std::generic_category().message(errno));
-            throw BError(BError::Codes::EXT_INVAL_ARG, str);
+            string errMsg = string("Failed to create .backup folder. ").append(std::generic_category().message(errno));
+            HILOGE("%{public}s, errno = %{public}d", errMsg.c_str(), errno);
+            return errno;
         }
         path = string(BConstants::PATH_FILEMANAGE_BACKUP_HOME).append(BConstants::SA_BUNDLE_BACKUP_RESTORE);
     } else if (bundleName == BConstants::BUNDLE_MEDIAL_DATA) {
         path = string(BConstants::PATH_MEDIALDATA_BACKUP_HOME).append(BConstants::SA_BUNDLE_BACKUP_RESTORE);
     }
     if (mkdir(path.data(), S_IRWXU) && errno != EEXIST) {
-        string str = string("Failed to create restore folder. ").append(std::generic_category().message(errno));
-        throw BError(BError::Codes::EXT_INVAL_ARG, str);
+        string errMsg = string("Failed to create restore folder. ").append(std::generic_category().message(errno));
+        HILOGE("%{public}s, errno = %{public}d", errMsg.c_str(), errno);
+        return errno;
     }
-    string tarName = path + fileName;
-    return tarName;
+    tarName = path + fileName;
+    return ERR_OK;
 }
 
 ErrCode BackupExtExtension::GetIncreFileHandleForNormalVersion(const std::string &fileName)
@@ -359,31 +361,43 @@ ErrCode BackupExtExtension::GetIncreFileHandleForNormalVersion(const std::string
     if (proxy == nullptr) {
         throw BError(BError::Codes::EXT_BROKEN_IPC, string("Failed to AGetInstance"));
     }
-    string tarName = GetIncrementalFileHandlePath(fileName, bundleName_);
+    std::string tarName;
     int32_t errCode = ERR_OK;
-    if (access(tarName.c_str(), F_OK) == 0) {
-        HILOGE("The file already exists, tarname = %{public}s, err =%{public}d", GetAnonyPath(tarName).c_str(), errno);
-        errCode = errno;
-    }
-    UniqueFd fd(open(tarName.data(), O_RDWR | O_CREAT | O_TRUNC, S_IRUSR | S_IWUSR));
-    if (fd < 0) {
-        HILOGE("Failed to open tar file = %{public}s, err = %{public}d", GetAnonyPath(tarName).c_str(), errno);
-        errCode = errno;
-        AuditLog auditLog = {false, "Open fd failed", "ADD", "", 1, "FAILED",
-            "GetIncreFileHandleForNormalVersion", "CommonFile", GetAnonyPath(tarName)};
-        HiAudit::GetInstance(false).Write(auditLog);
-    }
-    // 对应的简报文件
-    string reportName = GetReportFileName(tarName);
-    if (access(reportName.c_str(), F_OK) == 0) {
-        HILOGE("The report file already exists, Name = %{private}s, err =%{public}d", reportName.c_str(), errno);
-        errCode = errno;
-    }
-    UniqueFd reportFd(open(reportName.data(), O_RDWR | O_CREAT | O_TRUNC, S_IRUSR | S_IWUSR));
-    if (reportFd < 0) {
-        HILOGE("Failed to open report file = %{private}s, err = %{public}d", reportName.c_str(), errno);
-        errCode = errno;
-    }
+    UniqueFd fd(-1);
+    UniqueFd reportFd(-1);
+    do {
+        errCode = GetIncrementalFileHandlePath(fileName, bundleName_, tarName);
+        if (errCode != ERR_OK) {
+            HILOGE("GetIncrementalFileHandlePath failed, err = %{public}d", errCode);
+            break;
+        }
+        if (access(tarName.c_str(), F_OK) == 0) {
+            HILOGE("The file already exists, tarname = %{public}s, err =%{public}d",
+                GetAnonyPath(tarName).c_str(), errno);
+            errCode = errno;
+        }
+        fd = UniqueFd(open(tarName.data(), O_RDWR | O_CREAT | O_TRUNC, S_IRUSR | S_IWUSR));
+        if (fd < 0) {
+            HILOGE("Failed to open tar file = %{public}s, err = %{public}d", GetAnonyPath(tarName).c_str(), errno);
+            errCode = errno;
+            AuditLog auditLog = {false, "Open fd failed", "ADD", "", 1, "FAILED",
+                "GetIncreFileHandleForNormalVersion", "CommonFile", GetAnonyPath(tarName)};
+            HiAudit::GetInstance(false).Write(auditLog);
+            break;
+        }
+        // 对应的简报文件
+        string reportName = GetReportFileName(tarName);
+        if (access(reportName.c_str(), F_OK) == 0) {
+            HILOGE("The report file already exists, Name = %{private}s, err =%{public}d", reportName.c_str(), errno);
+            errCode = errno;
+        }
+        reportFd = UniqueFd(open(reportName.data(), O_RDWR | O_CREAT | O_TRUNC, S_IRUSR | S_IWUSR));
+        if (reportFd < 0) {
+            HILOGE("Failed to open report file = %{private}s, err = %{public}d", reportName.c_str(), errno);
+            errCode = errno;
+            break;
+        }
+    } while (0);
     HILOGI("extension: Will notify AppIncrementalFileReady");
     auto ret = proxy->AppIncrementalFileReady(fileName, move(fd), move(reportFd), errCode);
     if (ret != ERR_OK) {
diff --git a/frameworks/native/backup_ext/src/sub_ext_extension.cpp b/frameworks/native/backup_ext/src/sub_ext_extension.cpp
index 3586eab8606acec09d386ba4ceb7483b11095bac..71463bde160fab05a6b77f697f6026580b140010 100644
--- a/frameworks/native/backup_ext/src/sub_ext_extension.cpp
+++ b/frameworks/native/backup_ext/src/sub_ext_extension.cpp
@@ -976,6 +976,7 @@ static TarMap GetIncrmentBigInfos(const vector<struct ReportFileInfo> &files)
     for (const auto &item : files) {
         struct stat sta = {};
         if (stat(item.filePath.c_str(), &sta) != 0) {
+            HILOGE("Failed to stat file %{public}s, err = %{public}d", item.filePath.c_str(), errno);
             throw BError(BError::Codes::EXT_INVAL_ARG, "Get file stat failed");
         }
         string md5Name = getStringHash(bigFiles, item.filePath);