Function ztest_trim

freebsd/contrib/openzfs/cmd/ztest/ztest.c:6517–6590

ARGSUSED */

/* ARGSUSED */
void
ztest_trim(ztest_ds_t *zd, uint64_t id)
{
	spa_t *spa = ztest_spa;
	int error = 0;

	mutex_enter(&ztest_vdev_lock);

	spa_config_enter(spa, SCL_VDEV, FTAG, RW_READER);

	/* Random leaf vdev */
	vdev_t *rand_vd = ztest_random_concrete_vdev_leaf(spa->spa_root_vdev);
	if (rand_vd == NULL) {
		spa_config_exit(spa, SCL_VDEV, FTAG);
		mutex_exit(&ztest_vdev_lock);
		return;
	}

	/*
	 * The random vdev we've selected may change as soon as we
	 * drop the spa_config_lock. We create local copies of things
	 * we're interested in.
	 */
	uint64_t guid = rand_vd->vdev_guid;
	char *path = strdup(rand_vd->vdev_path);
	boolean_t active = rand_vd->vdev_trim_thread != NULL;

	zfs_dbgmsg("vd %p, guid %llu", rand_vd, guid);
	spa_config_exit(spa, SCL_VDEV, FTAG);

	uint64_t cmd = ztest_random(POOL_TRIM_FUNCS);
	uint64_t rate = 1 << ztest_random(30);
	boolean_t partial = (ztest_random(5) > 0);
	boolean_t secure = (ztest_random(5) > 0);

	nvlist_t *vdev_guids = fnvlist_alloc();
	nvlist_t *vdev_errlist = fnvlist_alloc();
	fnvlist_add_uint64(vdev_guids, path, guid);
	error = spa_vdev_trim(spa, vdev_guids, cmd, rate, partial,
	    secure, vdev_errlist);
	fnvlist_free(vdev_guids);
	fnvlist_free(vdev_errlist);

	switch (cmd) {
	case POOL_TRIM_CANCEL:
		if (ztest_opts.zo_verbose >= 4) {
			(void) printf("Cancel TRIM %s", path);
			if (!active)
				(void) printf(" failed (no TRIM active)");
			(void) printf("\n");
		}
		break;
	case POOL_TRIM_START:
		if (ztest_opts.zo_verbose >= 4) {
			(void) printf("Start TRIM %s", path);
			if (active && error == 0)
				(void) printf(" failed (already active)");
			else if (error != 0)