mname := typeURL
	if slash := strings.LastIndex(typeURL, "/"); slash >= 0 {
		mname = mname[slash+1:]
	}
	mt, err := protoregistry.GlobalTypes.FindMessageByName(protoreflect.FullName(mname))
	if err != nil {
		// istioctl should keep going if it encounters new Envoy versions; ignore unknown types
		return &exprpb.Type{TypeKind: &exprpb.Type_Dyn{Dyn: &emptypb.Empty{}}}, nil
	}

		}
		var data []byte
		var mt time.Time
		fullPath := pathJoin(volumeDir, req.Prefix, f)
		w := xioutil.NewDeadlineWorker(globalDriveConfig.GetMaxTimeout())
		if err := w.Run(func() (err error) {
			if req.MetadataOnly {
				data, mt, err = s.readMetadataWithDMTime(ctx, fullPath)
			} else {
				data, mt, err = s.readAllData(ctx, req.Bucket, volumeDir, fullPath, true)
			}
			return err
		}); err != nil {