def force_iscsi_lun_update(target_iqn):
    LOG.debug("Re-reading iSCSI luns.")

    utils.execute('iscsiadm',
                  '-m', 'node',
                  '-T', target_iqn,
                  '-R',
                  run_as_root=True,
                  check_exit_code=[0])
Extract information in a suitable format from when,
dataset/ETHPy150Open openstack/ironic/ironic/drivers/modules/deploy_utils.py/force_iscsi_lun_update--crossover with--dataset/ETHPy150Open smhg/sublime-suncycle/sun.py/Sun.__preptime