spa_destroy
VERIFY3U(EBUSY, ==, spa_destroy(zo->zo_pool));
(void) spa_destroy(name);
(void) spa_destroy("splitp");
(void) spa_destroy(newname);
(void) spa_destroy(ztest_opts.zo_pool);
extern int spa_destroy(char *pool);
(void) spa_destroy(spa_name);
error = spa_destroy(zc->zc_name);