klog.Infof("rolling etcd back from %s to %s", current, target)
			current, err = m.rollbackEtcd3MinorVersion(current, target)
		}
		if err != nil {
			return err
		}
	}
}

func (m *Migrator) rollbackEtcd3MinorVersion(current *EtcdVersionPair, target *EtcdVersionPair) (*EtcdVersionPair, error) {
	if target.version.Minor != current.version.Minor-1 {