if err := deleteIop(cs, iopName); err != nil {
					t.Errorf("failed to delete iopfile: %v", err)
				}

				retry.UntilSuccessOrFail(t, func() error {
					exist, checkErr := checkIopExist(cs, iopName)
					if checkErr != nil {
						return checkErr
					}

					if exist {
						return fmt.Errorf("fail to delete iop")
					}

					return nil