ZPOOL_LOAD_REQUEST_TXG
nvlist_add_uint64(policy, ZPOOL_LOAD_REQUEST_TXG, max_txg) != 0 ||
nvlist_add_uint64(policy, ZPOOL_LOAD_REQUEST_TXG, txg) != 0 ||
} else if (strcmp(nm, ZPOOL_LOAD_REQUEST_TXG) == 0) {