fix bug

lvm_operations.py

@@ -39,11 +39,12 @@ class LvmOperations:
         try:
             result = subprocess.run(
                 command_list,
-                capture_output=True,
-                text=True,
-                check=True,
+                stdout=subprocess.PIPE,
+                stderr=subprocess.PIPE,
                 encoding='utf-8',
-                input=input_data
+                check=True,
+                input=input_data,
+                stdin=subprocess.PIPE if input_data else None
             )
             logger.info(f"命令成功: {full_cmd_str}")
             return True, result.stdout.strip(), result.stderr.strip()