diff --git a/bin/backup.sh b/bin/backup.sh
index 067c32f..d4eba8c 100755
--- a/bin/backup.sh
+++ b/bin/backup.sh
@@ -208,8 +208,10 @@ backup_folders() {
 
     # 执行打包
     log_info "开始打包文件夹..."
+    log_info "排除规则: ${exclude_args}"
     if eval "tar -czf '${folders_tar}' ${exclude_args} ${tar_sources}" 2>&1; then
-        log_info "文件夹备份完成: ${folders_tar}"
+        local tar_size=$(du -h "${folders_tar}" | cut -f1)
+        log_info "文件夹备份完成: ${folders_tar} (大小: ${tar_size})"
         echo "${folders_tar}"
     else
         log_error "文件夹备份失败"
@@ -321,12 +323,18 @@ merge_backups() {
     local files_list=""
     if [[ -n "${folders_tar}" ]] && [[ -f "${folders_tar}" ]]; then
         files_list+=" ${folders_tar#${TEMP_DIR}/}"
+        log_info "添加到合并: ${folders_tar#${TEMP_DIR}/} ($(du -h "${folders_tar}" | cut -f1))"
     fi
     if [[ -n "${mysql_dump}" ]] && [[ -f "${mysql_dump}" ]]; then
         files_list+=" ${mysql_dump#${TEMP_DIR}/}"
+        log_info "添加到合并: ${mysql_dump#${TEMP_DIR}/} ($(du -h "${mysql_dump}" | cut -f1))"
     fi
 
-    tar -czf "${final_backup}" -C "${TEMP_DIR}" ${files_list}
+    log_info "执行合并打包..."
+    if ! tar -czf "${final_backup}" -C "${TEMP_DIR}" ${files_list} 2>&1; then
+        log_error "tar 合并命令执行失败"
+        return 1
+    fi
 
     if [[ -f "${final_backup}" ]]; then
         local file_size=$(du -h "${final_backup}" | cut -f1)