Function ztest_zap_parallel

freebsd/contrib/openzfs/cmd/ztest/ztest.c:5312–5425

ARGSUSED */

/* ARGSUSED */
void
ztest_zap_parallel(ztest_ds_t *zd, uint64_t id)
{
	objset_t *os = zd->zd_os;
	ztest_od_t *od;
	uint64_t txg, object, count, wsize, wc, zl_wsize, zl_wc;
	dmu_tx_t *tx;
	int i, namelen, error;
	int micro = ztest_random(2);
	char name[20], string_value[20];
	void *data;

	od = umem_alloc(sizeof (ztest_od_t), UMEM_NOFAIL);
	ztest_od_init(od, ID_PARALLEL, FTAG, micro, DMU_OT_ZAP_OTHER, 0, 0, 0);

	if (ztest_object_init(zd, od, sizeof (ztest_od_t), B_FALSE) != 0) {
		umem_free(od, sizeof (ztest_od_t));
		return;
	}

	object = od->od_object;

	/*
	 * Generate a random name of the form 'xxx.....' where each
	 * x is a random printable character and the dots are dots.
	 * There are 94 such characters, and the name length goes from
	 * 6 to 20, so there are 94^3 * 15 = 12,458,760 possible names.
	 */
	namelen = ztest_random(sizeof (name) - 5) + 5 + 1;

	for (i = 0; i < 3; i++)
		name[i] = '!' + ztest_random('~' - '!' + 1);
	for (; i < namelen - 1; i++)
		name[i] = '.';
	name[i] = '\0';

	if ((namelen & 1) || micro) {
		wsize = sizeof (txg);
		wc = 1;
		data = &txg;
	} else {
		wsize = 1;
		wc = namelen;
		data = string_value;
	}

	count = -1ULL;
	VERIFY0(zap_count(os, object, &count));
	ASSERT(count != -1ULL);

	/*
	 * Select an operation: length, lookup, add, update, remove.
	 */
	i = ztest_random(5);

	if (i >= 2) {
		tx = dmu_tx_create(os);
		dmu_tx_hold_zap(tx, object, B_TRUE, NULL);