raidz_test - zygaena/hammerhead

root / base / usr / src / cmd / raidz_test
raidz_test Plain Text 1168 lines 26.6 KB
#
# This file and its contents are supplied under the terms of the
# Common Development and Distribution License ("CDDL"), version 1.0.
# You may only use this file in accordance with the terms of version
# 1.0 of the CDDL.
#
# A full copy of the text of the CDDL should have accompanied this
# source.  A copy of the CDDL is also available via the Internet at
# http://www.illumos.org/license/CDDL.
#

#
# Copyright 2020 Joyent, Inc.
#

include ../Makefile.cmd
include ../Makefile.cmd.64

PROG= raidz_test
OBJS= raidz_test.o raidz_bench.o
SRCS= $(OBJS:%.o=%.c)
POFILES= $(PROG:%=%.po)

# No msg catalog here.
POFILE=

LDLIBS += -lzpool -lfakekernel -lumem

INCS += -I../../lib/libzpool/common
INCS += -I../../uts/common/fs/zfs
INCS += -I../../uts/common/sys/fs

CPPFLAGS.first = -I$(SRC)/lib/libfakekernel/common -D_FAKE_KERNEL
CPPFLAGS += -D_LARGEFILE64_SOURCE=1
CPPFLAGS += $(INCS)

CSTD =   $(CSTD_GNU99)

CERRWARN += -Wno-type-limits

SMATCH=off

.KEEP_STATE:

all: $(PROG)

$(PROG): $(OBJS)
	$(LINK.c) -o $(PROG) $(OBJS) $(LDLIBS)
	$(POST_PROCESS)

install: all $(ROOTPROG)

clean:
	$(RM) $(OBJS)

_msg: $(MSGDOMAIN) $(POFILES)
	$(CP) $(POFILES) $(MSGDOMAIN)

$(MSGDOMAIN):
	$(INS.dir)

include ../Makefile.targ
/*
 * CDDL HEADER START
 *
 * The contents of this file are subject to the terms of the
 * Common Development and Distribution License (the "License").
 * You may not use this file except in compliance with the License.
 *
 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
 * or http://www.opensolaris.org/os/licensing.
 * See the License for the specific language governing permissions
 * and limitations under the License.
 *
 * When distributing Covered Code, include this CDDL HEADER in each
 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
 * If applicable, add the following below this CDDL HEADER, with the
 * fields enclosed by brackets "[]" replaced with your own identifying
 * information: Portions Copyright [yyyy] [name of copyright owner]
 *
 * CDDL HEADER END
 */

/*
 * Copyright (C) 2016 Gvozden Nešković. All rights reserved.
 */

#include <sys/zfs_context.h>
#include <sys/time.h>
#include <sys/wait.h>
#include <sys/zio.h>
#include <sys/vdev_raidz.h>
#include <sys/vdev_raidz_impl.h>
#include <stdio.h>
#include <strings.h>

#include <sys/time.h>

#include "raidz_test.h"

#define	GEN_BENCH_MEMORY	(((uint64_t)1ULL)<<32)
#define	REC_BENCH_MEMORY	(((uint64_t)1ULL)<<29)
#define	BENCH_ASHIFT		12
#define	MIN_CS_SHIFT		BENCH_ASHIFT
#define	MAX_CS_SHIFT		SPA_MAXBLOCKSHIFT

static zio_t zio_bench;
static raidz_map_t *rm_bench;
static size_t max_data_size = SPA_MAXBLOCKSIZE;

static void
bench_init_raidz_map(void)
{
	zio_bench.io_offset = 0;
	zio_bench.io_size = max_data_size;

	/*
	 * To permit larger column sizes these have to be done
	 * allocated using aligned alloc instead of zio_abd_buf_alloc
	 */
	zio_bench.io_abd = raidz_alloc(max_data_size);

	init_zio_abd(&zio_bench);
}

static void
bench_fini_raidz_maps(void)
{
	/* tear down golden zio */
	raidz_free(zio_bench.io_abd, max_data_size);
	bzero(&zio_bench, sizeof (zio_t));
}

static inline void
run_gen_bench_impl(const char *impl)
{
	int fn, ncols;
	uint64_t ds, iter_cnt, iter, disksize;
	hrtime_t start;
	double elapsed, d_bw;

	/* Benchmark generate functions */
	for (fn = 0; fn < RAIDZ_GEN_NUM; fn++) {

		for (ds = MIN_CS_SHIFT; ds <= MAX_CS_SHIFT; ds++) {
			/* create suitable raidz_map */
			ncols = rto_opts.rto_dcols + fn + 1;
			zio_bench.io_size = 1ULL << ds;
			rm_bench = vdev_raidz_map_alloc(&zio_bench,
			    BENCH_ASHIFT, ncols, fn+1);

			/* estimate iteration count */
			iter_cnt = GEN_BENCH_MEMORY;
			iter_cnt /= zio_bench.io_size;

			start = gethrtime();
			for (iter = 0; iter < iter_cnt; iter++)
				vdev_raidz_generate_parity(rm_bench);
			elapsed = NSEC2SEC((double)(gethrtime() - start));

			disksize = (1ULL << ds) / rto_opts.rto_dcols;
			d_bw = (double)iter_cnt * (double)disksize;
			d_bw /= (1024.0 * 1024.0 * elapsed);

			LOG(D_ALL, "%10s, %8s, %zu, %10llu, %lf, %lf, %u\n",
			    impl,
			    raidz_gen_name[fn],
			    rto_opts.rto_dcols,
			    (1ULL<<ds),
			    d_bw,
			    d_bw * (double)(ncols),
			    (unsigned)iter_cnt);

			vdev_raidz_map_free(rm_bench);
		}
	}
}

void
run_gen_bench(void)
{
	char **impl_name;

	LOG(D_INFO, DBLSEP "\nBenchmarking parity generation...\n\n");
	LOG(D_ALL, "impl, math, dcols, iosize, disk_bw, total_bw, iter\n");

	for (impl_name = (char **)raidz_impl_names; *impl_name != NULL;
	    impl_name++) {

		if (vdev_raidz_impl_set(*impl_name) != 0)
			continue;

		run_gen_bench_impl(*impl_name);
	}
}

static void
run_rec_bench_impl(const char *impl)
{
	int fn, ncols, nbad;
	uint64_t ds, iter_cnt, iter, disksize;
	hrtime_t start;
	double elapsed, d_bw;
	static const int tgt[7][3] = {
		{1, 2, 3},	/* rec_p:   bad QR & D[0]	*/
		{0, 2, 3},	/* rec_q:   bad PR & D[0]	*/
		{0, 1, 3},	/* rec_r:   bad PQ & D[0]	*/
		{2, 3, 4},	/* rec_pq:  bad R  & D[0][1]	*/
		{1, 3, 4},	/* rec_pr:  bad Q  & D[0][1]	*/
		{0, 3, 4},	/* rec_qr:  bad P  & D[0][1]	*/
		{3, 4, 5}	/* rec_pqr: bad    & D[0][1][2] */
	};

	for (fn = 0; fn < RAIDZ_REC_NUM; fn++) {
		for (ds = MIN_CS_SHIFT; ds <= MAX_CS_SHIFT; ds++) {

			/* create suitable raidz_map */
			ncols = rto_opts.rto_dcols + PARITY_PQR;
			zio_bench.io_size = 1ULL << ds;

			/*
			 * raidz block is too short to test
			 * the requested method
			 */
			if (zio_bench.io_size / rto_opts.rto_dcols <
			    (1ULL << BENCH_ASHIFT))
				continue;

			rm_bench = vdev_raidz_map_alloc(&zio_bench,
			    BENCH_ASHIFT, ncols, PARITY_PQR);

			/* estimate iteration count */
			iter_cnt = (REC_BENCH_MEMORY);
			iter_cnt /= zio_bench.io_size;

			/* calculate how many bad columns there are */
			nbad = MIN(3, raidz_ncols(rm_bench) -
			    raidz_parity(rm_bench));

			start = gethrtime();
			for (iter = 0; iter < iter_cnt; iter++)
				vdev_raidz_reconstruct(rm_bench, tgt[fn], nbad);
			elapsed = NSEC2SEC((double)(gethrtime() - start));

			disksize = (1ULL << ds) / rto_opts.rto_dcols;
			d_bw = (double)iter_cnt * (double)(disksize);
			d_bw /= (1024.0 * 1024.0 * elapsed);

			LOG(D_ALL, "%10s, %8s, %zu, %10llu, %lf, %lf, %u\n",
			    impl,
			    raidz_rec_name[fn],
			    rto_opts.rto_dcols,
			    (1ULL<<ds),
			    d_bw,
			    d_bw * (double)ncols,
			    (unsigned)iter_cnt);

			vdev_raidz_map_free(rm_bench);
		}
	}
}

void
run_rec_bench(void)
{
	char **impl_name;

	LOG(D_INFO, DBLSEP "\nBenchmarking data reconstruction...\n\n");
	LOG(D_ALL, "impl, math, dcols, iosize, disk_bw, total_bw, iter\n");

	for (impl_name = (char **)raidz_impl_names; *impl_name != NULL;
	    impl_name++) {

		if (vdev_raidz_impl_set(*impl_name) != 0)
			continue;

		run_rec_bench_impl(*impl_name);
	}
}

void
run_raidz_benchmark(void)
{
	bench_init_raidz_map();

	run_gen_bench();
	run_rec_bench();

	bench_fini_raidz_maps();
}
/*
 * CDDL HEADER START
 *
 * The contents of this file are subject to the terms of the
 * Common Development and Distribution License (the "License").
 * You may not use this file except in compliance with the License.
 *
 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
 * or http://www.opensolaris.org/os/licensing.
 * See the License for the specific language governing permissions
 * and limitations under the License.
 *
 * When distributing Covered Code, include this CDDL HEADER in each
 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
 * If applicable, add the following below this CDDL HEADER, with the
 * fields enclosed by brackets "[]" replaced with your own identifying
 * information: Portions Copyright [yyyy] [name of copyright owner]
 *
 * CDDL HEADER END
 */

/*
 * Copyright (C) 2016 Gvozden Nešković. All rights reserved.
 * Copyright 2020 Joyent, Inc.
 */

#include <sys/zfs_context.h>
#include <sys/time.h>
#include <sys/wait.h>
#include <sys/zio.h>
#include <umem.h>
#include <sys/vdev_raidz.h>
#include <sys/vdev_raidz_impl.h>
#include <assert.h>
#include <stdio.h>
#include <strings.h>
#include <unistd.h>
#include "raidz_test.h"

static int *rand_data;
raidz_test_opts_t rto_opts;

static char gdb[256];
static const char gdb_tmpl[] = "gdb -ex \"set pagination 0\" -p %d";

#define	boot_ncpus	(sysconf(_SC_NPROCESSORS_ONLN))

static size_t ilog2(size_t a)
{
	return (a > 1 ? 1 + ilog2(a >> 1) : 0);
}

static void print_opts(raidz_test_opts_t *opts, boolean_t force)
{
	char *verbose;
	switch (opts->rto_v) {
		case 0:
			verbose = "no";
			break;
		case 1:
			verbose = "info";
			break;
		default:
			verbose = "debug";
			break;
	}

	if (force || opts->rto_v >= D_INFO) {
		(void) fprintf(stdout, DBLSEP "Running with options:\n"
		    "  (-a) zio ashift                   : %zu\n"
		    "  (-o) zio offset                   : 1 << %zu\n"
		    "  (-d) number of raidz data columns : %zu\n"
		    "  (-s) size of DATA                 : 1 << %zu\n"
		    "  (-S) sweep parameters             : %s \n"
		    "  (-v) verbose                      : %s \n\n",
		    opts->rto_ashift,			/* -a */
		    ilog2(opts->rto_offset),		/* -o */
		    opts->rto_dcols,			/* -d */
		    ilog2(opts->rto_dsize),		/* -s */
		    opts->rto_sweep ? "yes" : "no",	/* -S */
		    verbose);				/* -v */
	}
}

static void usage(boolean_t requested)
{
	const raidz_test_opts_t *o = &rto_opts_defaults;

	FILE *fp = requested ? stdout : stderr;

	(void) fprintf(fp, "Usage:\n"
	    "\t[-a zio ashift (default: %zu)]\n"
	    "\t[-o zio offset, exponent radix 2 (default: %zu)]\n"
	    "\t[-d number of raidz data columns (default: %zu)]\n"
	    "\t[-s zio size, exponent radix 2 (default: %zu)]\n"
	    "\t[-S parameter sweep (default: %s)]\n"
	    "\t[-t timeout for parameter sweep test]\n"
	    "\t[-B benchmark all raidz implementations]\n"
	    "\t[-v increase verbosity (default: %zu)]\n"
	    "\t[-h (print help)]\n"
	    "\t[-T test the test, see if failure would be detected]\n"
	    "\t[-D debug (attach gdb on SIGSEGV)]\n"
	    "",
	    o->rto_ashift,				/* -a */
	    ilog2(o->rto_offset),			/* -o */
	    o->rto_dcols,				/* -d */
	    ilog2(o->rto_dsize),			/* -s */
	    rto_opts.rto_sweep ? "yes" : "no",		/* -S */
	    o->rto_v);					/* -d */

	exit(requested ? 0 : 1);
}

static void process_options(int argc, char **argv)
{
	size_t value;
	int opt;

	raidz_test_opts_t *o = &rto_opts;

	bcopy(&rto_opts_defaults, o, sizeof (*o));

	while ((opt = getopt(argc, argv, "TDBSvha:o:d:s:t:")) != -1) {
		value = 0;

		switch (opt) {
		case 'a':
			value = strtoull(optarg, NULL, 0);
			o->rto_ashift = MIN(13, MAX(9, value));
			break;
		case 'o':
			value = strtoull(optarg, NULL, 0);
			o->rto_offset = ((1ULL << MIN(12, value)) >> 9) << 9;
			break;
		case 'd':
			value = strtoull(optarg, NULL, 0);
			o->rto_dcols = MIN(255, MAX(1, value));
			break;
		case 's':
			value = strtoull(optarg, NULL, 0);
			o->rto_dsize = 1ULL <<  MIN(SPA_MAXBLOCKSHIFT,
			    MAX(SPA_MINBLOCKSHIFT, value));
			break;
		case 't':
			value = strtoull(optarg, NULL, 0);
			o->rto_sweep_timeout = value;
			break;
		case 'v':
			o->rto_v++;
			break;
		case 'S':
			o->rto_sweep = 1;
			break;
		case 'B':
			o->rto_benchmark = 1;
			break;
		case 'D':
			o->rto_gdb = 1;
			break;
		case 'T':
			o->rto_sanity = 1;
			break;
		case 'h':
			usage(B_TRUE);
			break;
		case '?':
		default:
			usage(B_FALSE);
			break;
		}
	}
}

#define	DATA_COL(rm, i) ((rm)->rm_col[raidz_parity(rm) + (i)].rc_abd)
#define	DATA_COL_SIZE(rm, i) ((rm)->rm_col[raidz_parity(rm) + (i)].rc_size)

#define	CODE_COL(rm, i) ((rm)->rm_col[(i)].rc_abd)
#define	CODE_COL_SIZE(rm, i) ((rm)->rm_col[(i)].rc_size)

static int
cmp_code(raidz_test_opts_t *opts, const raidz_map_t *rm, const int parity)
{
	int i, ret = 0;

	VERIFY(parity >= 1 && parity <= 3);

	for (i = 0; i < parity; i++) {
		if (abd_cmp(CODE_COL(rm, i), CODE_COL(opts->rm_golden, i),
		    CODE_COL(rm, i)->abd_size) != 0) {
			ret++;
			LOG_OPT(D_DEBUG, opts,
			    "\nParity block [%d] different!\n", i);
		}
	}
	return (ret);
}

static int
cmp_data(raidz_test_opts_t *opts, raidz_map_t *rm)
{
	int i, ret = 0;
	int dcols = opts->rm_golden->rm_cols - raidz_parity(opts->rm_golden);

	for (i = 0; i < dcols; i++) {
		if (abd_cmp(DATA_COL(opts->rm_golden, i), DATA_COL(rm, i),
		    DATA_COL(opts->rm_golden, i)->abd_size) != 0) {
			ret++;

			LOG_OPT(D_DEBUG, opts,
			    "\nData block [%d] different!\n", i);
		}
	}
	return (ret);
}

static int
init_rand(void *data, size_t size, void *private)
{
	int i;
	int *dst = (int *)data;

	for (i = 0; i < size / sizeof (int); i++)
		dst[i] = rand_data[i];

	return (0);
}

static void
corrupt_colums(raidz_map_t *rm, const int *tgts, const int cnt)
{
	int i;
	raidz_col_t *col;

	for (i = 0; i < cnt; i++) {
		col = &rm->rm_col[tgts[i]];
		(void) abd_iterate_func(col->rc_abd, 0, col->rc_size,
		    init_rand, NULL);
	}
}

void
init_zio_abd(zio_t *zio)
{
	(void) abd_iterate_func(zio->io_abd, 0, zio->io_size, init_rand, NULL);
}

static void
fini_raidz_map(zio_t **zio, raidz_map_t **rm)
{
	vdev_raidz_map_free(*rm);
	raidz_free((*zio)->io_abd, (*zio)->io_size);
	umem_free(*zio, sizeof (zio_t));

	*zio = NULL;
	*rm = NULL;
}

static int
init_raidz_golden_map(raidz_test_opts_t *opts, const int parity)
{
	int err = 0;
	zio_t *zio_test;
	raidz_map_t *rm_test;
	const size_t total_ncols = opts->rto_dcols + parity;

	if (opts->rm_golden) {
		fini_raidz_map(&opts->zio_golden, &opts->rm_golden);
	}

	opts->zio_golden = umem_zalloc(sizeof (zio_t), UMEM_NOFAIL);
	zio_test = umem_zalloc(sizeof (zio_t), UMEM_NOFAIL);

	opts->zio_golden->io_offset = zio_test->io_offset = opts->rto_offset;
	opts->zio_golden->io_size = zio_test->io_size = opts->rto_dsize;

	opts->zio_golden->io_abd = raidz_alloc(opts->rto_dsize);
	zio_test->io_abd = raidz_alloc(opts->rto_dsize);

	init_zio_abd(opts->zio_golden);
	init_zio_abd(zio_test);

	VERIFY0(vdev_raidz_impl_set("original"));

	opts->rm_golden = vdev_raidz_map_alloc(opts->zio_golden,
	    opts->rto_ashift, total_ncols, parity);
	rm_test = vdev_raidz_map_alloc(zio_test,
	    opts->rto_ashift, total_ncols, parity);

	VERIFY(opts->zio_golden);
	VERIFY(opts->rm_golden);

	vdev_raidz_generate_parity(opts->rm_golden);
	vdev_raidz_generate_parity(rm_test);

	/* sanity check */
	err |= cmp_data(opts, rm_test);
	err |= cmp_code(opts, rm_test, parity);

	if (err)
		ERRMSG("initializing the golden copy ... [FAIL]!\n");

	/* tear down raidz_map of test zio */
	fini_raidz_map(&zio_test, &rm_test);

	return (err);
}

static raidz_map_t *
init_raidz_map(raidz_test_opts_t *opts, zio_t **zio, const int parity)
{
	raidz_map_t *rm = NULL;
	const size_t alloc_dsize = opts->rto_dsize;
	const size_t total_ncols = opts->rto_dcols + parity;
	const int ccols[] = { 0, 1, 2 };

	VERIFY(zio);
	VERIFY(parity <= 3 && parity >= 1);

	*zio = umem_zalloc(sizeof (zio_t), UMEM_NOFAIL);

	(*zio)->io_offset = 0;
	(*zio)->io_size = alloc_dsize;
	(*zio)->io_abd = raidz_alloc(alloc_dsize);
	init_zio_abd(*zio);

	rm = vdev_raidz_map_alloc(*zio, opts->rto_ashift,
	    total_ncols, parity);
	VERIFY(rm);

	/* Make sure code columns are destroyed */
	corrupt_colums(rm, ccols, parity);

	return (rm);
}

static int
run_gen_check(raidz_test_opts_t *opts)
{
	char **impl_name;
	int fn, err = 0;
	zio_t *zio_test;
	raidz_map_t *rm_test;

	err = init_raidz_golden_map(opts, PARITY_PQR);
	if (0 != err)
		return (err);

	LOG(D_INFO, DBLSEP);
	LOG(D_INFO, "Testing parity generation...\n");

	for (impl_name = (char **)raidz_impl_names+1; *impl_name != NULL;
	    impl_name++) {

		LOG(D_INFO, SEP);
		LOG(D_INFO, "\tTesting [%s] implementation...", *impl_name);

		if (0 != vdev_raidz_impl_set(*impl_name)) {
			LOG(D_INFO, "[SKIP]\n");
			continue;
		} else {
			LOG(D_INFO, "[SUPPORTED]\n");
		}

		for (fn = 0; fn < RAIDZ_GEN_NUM; fn++) {

			/* Check if should stop */
			if (rto_opts.rto_should_stop)
				return (err);

			/* create suitable raidz_map */
			rm_test = init_raidz_map(opts, &zio_test, fn+1);
			VERIFY(rm_test);

			LOG(D_INFO, "\t\tTesting method [%s] ...",
			    raidz_gen_name[fn]);

			if (!opts->rto_sanity)
				vdev_raidz_generate_parity(rm_test);

			if (cmp_code(opts, rm_test, fn+1) != 0) {
				LOG(D_INFO, "[FAIL]\n");
				err++;
			} else
				LOG(D_INFO, "[PASS]\n");

			fini_raidz_map(&zio_test, &rm_test);
		}
	}

	fini_raidz_map(&opts->zio_golden, &opts->rm_golden);

	return (err);
}

static int
run_rec_check_impl(raidz_test_opts_t *opts, raidz_map_t *rm, const int fn)
{
	int x0, x1, x2;
	int tgtidx[3];
	int err = 0;
	static const int rec_tgts[7][3] = {
		{1, 2, 3},	/* rec_p:   bad QR & D[0]	*/
		{0, 2, 3},	/* rec_q:   bad PR & D[0]	*/
		{0, 1, 3},	/* rec_r:   bad PQ & D[0]	*/
		{2, 3, 4},	/* rec_pq:  bad R  & D[0][1]	*/
		{1, 3, 4},	/* rec_pr:  bad Q  & D[0][1]	*/
		{0, 3, 4},	/* rec_qr:  bad P  & D[0][1]	*/
		{3, 4, 5}	/* rec_pqr: bad    & D[0][1][2] */
	};

	memcpy(tgtidx, rec_tgts[fn], sizeof (tgtidx));

	if (fn < RAIDZ_REC_PQ) {
		/* can reconstruct 1 failed data disk */
		for (x0 = 0; x0 < opts->rto_dcols; x0++) {
			if (x0 >= rm->rm_cols - raidz_parity(rm))
				continue;

			/* Check if should stop */
			if (rto_opts.rto_should_stop)
				return (err);

			LOG(D_DEBUG, "[%d] ", x0);

			tgtidx[2] = x0 + raidz_parity(rm);

			corrupt_colums(rm, tgtidx+2, 1);

			if (!opts->rto_sanity)
				(void) vdev_raidz_reconstruct(rm, tgtidx, 3);

			if (cmp_data(opts, rm) != 0) {
				err++;
				LOG(D_DEBUG, "\nREC D[%d]... [FAIL]\n", x0);
			}
		}

	} else if (fn < RAIDZ_REC_PQR) {
		/* can reconstruct 2 failed data disk */
		for (x0 = 0; x0 < opts->rto_dcols; x0++) {
			if (x0 >= rm->rm_cols - raidz_parity(rm))
				continue;
			for (x1 = x0 + 1; x1 < opts->rto_dcols; x1++) {
				if (x1 >= rm->rm_cols - raidz_parity(rm))
					continue;

				/* Check if should stop */
				if (rto_opts.rto_should_stop)
					return (err);

				LOG(D_DEBUG, "[%d %d] ", x0, x1);

				tgtidx[1] = x0 + raidz_parity(rm);
				tgtidx[2] = x1 + raidz_parity(rm);

				corrupt_colums(rm, tgtidx+1, 2);

				if (!opts->rto_sanity)
					(void) vdev_raidz_reconstruct(rm,
					    tgtidx, 3);

				if (cmp_data(opts, rm) != 0) {
					err++;
					LOG(D_DEBUG, "\nREC D[%d %d]... "
					    "[FAIL]\n", x0, x1);
				}
			}
		}
	} else {
		/* can reconstruct 3 failed data disk */
		for (x0 = 0; x0 < opts->rto_dcols; x0++) {
			if (x0 >= rm->rm_cols - raidz_parity(rm))
				continue;
			for (x1 = x0 + 1; x1 < opts->rto_dcols; x1++) {
				if (x1 >= rm->rm_cols - raidz_parity(rm))
					continue;
				for (x2 = x1 + 1; x2 < opts->rto_dcols; x2++) {
					if (x2 >=
					    rm->rm_cols - raidz_parity(rm))
						continue;

					/* Check if should stop */
					if (rto_opts.rto_should_stop)
						return (err);

					LOG(D_DEBUG, "[%d %d %d]", x0, x1, x2);

					tgtidx[0] = x0 + raidz_parity(rm);
					tgtidx[1] = x1 + raidz_parity(rm);
					tgtidx[2] = x2 + raidz_parity(rm);

					corrupt_colums(rm, tgtidx, 3);

					if (!opts->rto_sanity)
						(void) vdev_raidz_reconstruct(
						    rm, tgtidx, 3);

					if (cmp_data(opts, rm) != 0) {
						err++;
						LOG(D_DEBUG,
						    "\nREC D[%d %d %d]... "
						    "[FAIL]\n", x0, x1, x2);
					}
				}
			}
		}
	}
	return (err);
}

static int
run_rec_check(raidz_test_opts_t *opts)
{
	char **impl_name;
	unsigned fn, err = 0;
	zio_t *zio_test;
	raidz_map_t *rm_test;

	err = init_raidz_golden_map(opts, PARITY_PQR);
	if (0 != err)
		return (err);

	LOG(D_INFO, DBLSEP);
	LOG(D_INFO, "Testing data reconstruction...\n");

	for (impl_name = (char **)raidz_impl_names+1; *impl_name != NULL;
	    impl_name++) {

		LOG(D_INFO, SEP);
		LOG(D_INFO, "\tTesting [%s] implementation...", *impl_name);

		if (vdev_raidz_impl_set(*impl_name) != 0) {
			LOG(D_INFO, "[SKIP]\n");
			continue;
		} else
			LOG(D_INFO, "[SUPPORTED]\n");


		/* create suitable raidz_map */
		rm_test = init_raidz_map(opts, &zio_test, PARITY_PQR);
		/* generate parity */
		vdev_raidz_generate_parity(rm_test);

		for (fn = 0; fn < RAIDZ_REC_NUM; fn++) {

			LOG(D_INFO, "\t\tTesting method [%s] ...",
			    raidz_rec_name[fn]);

			if (run_rec_check_impl(opts, rm_test, fn) != 0) {
				LOG(D_INFO, "[FAIL]\n");
				err++;

			} else
				LOG(D_INFO, "[PASS]\n");

		}
		/* tear down test raidz_map */
		fini_raidz_map(&zio_test, &rm_test);
	}

	fini_raidz_map(&opts->zio_golden, &opts->rm_golden);

	return (err);
}

static int
run_test(raidz_test_opts_t *opts)
{
	int err = 0;

	if (opts == NULL)
		opts = &rto_opts;

	print_opts(opts, B_FALSE);

	err |= run_gen_check(opts);
	err |= run_rec_check(opts);

	return (err);
}

#define	SWEEP_RUNNING	0
#define	SWEEP_FINISHED	1
#define	SWEEP_ERROR	2
#define	SWEEP_TIMEOUT	3

static int sweep_state = 0;
static raidz_test_opts_t failed_opts;

static kmutex_t sem_mtx;
static kcondvar_t sem_cv;
static int max_free_slots;
static int free_slots;

static void
sweep_thread(void *arg)
{
	int err = 0;
	raidz_test_opts_t *opts = (raidz_test_opts_t *)arg;
	VERIFY(opts != NULL);

	err = run_test(opts);

	if (rto_opts.rto_sanity) {
		/* 25% chance that a sweep test fails */
		if (rand() < (RAND_MAX/4))
			err = 1;
	}

	if (0 != err) {
		mutex_enter(&sem_mtx);
		memcpy(&failed_opts, opts, sizeof (raidz_test_opts_t));
		sweep_state = SWEEP_ERROR;
		mutex_exit(&sem_mtx);
	}

	umem_free(opts, sizeof (raidz_test_opts_t));

	/* signal the next thread */
	mutex_enter(&sem_mtx);
	free_slots++;
	cv_signal(&sem_cv);
	mutex_exit(&sem_mtx);

	thread_exit();
}

static int
run_sweep(void)
{
	static const size_t dcols_v[] = { 1, 2, 3, 4, 5, 6, 7, 8, 12, 15, 16 };
	static const size_t ashift_v[] = { 9, 12, 14 };
	static const size_t size_v[] = { 1 << 9, 21 * (1 << 9), 13 * (1 << 12),
		1 << 17, (1 << 20) - (1 << 12), SPA_MAXBLOCKSIZE };

	(void) setvbuf(stdout, NULL, _IONBF, 0);

	ulong_t total_comb = ARRAY_SIZE(size_v) * ARRAY_SIZE(ashift_v) *
	    ARRAY_SIZE(dcols_v);
	ulong_t tried_comb = 0;
	hrtime_t time_diff, start_time = gethrtime();
	raidz_test_opts_t *opts;
	int a, d, s;

	max_free_slots = free_slots = MAX(2, boot_ncpus);

	mutex_init(&sem_mtx, NULL, MUTEX_DEFAULT, NULL);
	cv_init(&sem_cv, NULL, CV_DEFAULT, NULL);

	for (s = 0; s < ARRAY_SIZE(size_v); s++)
	for (a = 0; a < ARRAY_SIZE(ashift_v); a++)
	for (d = 0; d < ARRAY_SIZE(dcols_v); d++) {

		if (size_v[s] < (1 << ashift_v[a])) {
			total_comb--;
			continue;
		}

		if (++tried_comb % 20 == 0)
			LOG(D_ALL, "%lu/%lu... ", tried_comb, total_comb);

		/* wait for signal to start new thread */
		mutex_enter(&sem_mtx);
		while (cv_timedwait_sig(&sem_cv, &sem_mtx,
		    ddi_get_lbolt() + hz)) {

			/* check if should stop the test (timeout) */
			time_diff = (gethrtime() - start_time) / NANOSEC;
			if (rto_opts.rto_sweep_timeout > 0 &&
			    time_diff >= rto_opts.rto_sweep_timeout) {
				sweep_state = SWEEP_TIMEOUT;
				rto_opts.rto_should_stop = B_TRUE;
				mutex_exit(&sem_mtx);
				goto exit;
			}

			/* check if should stop the test (error) */
			if (sweep_state != SWEEP_RUNNING) {
				mutex_exit(&sem_mtx);
				goto exit;
			}

			/* exit loop if a slot is available */
			if (free_slots > 0) {
				break;
			}
		}

		free_slots--;
		mutex_exit(&sem_mtx);

		opts = umem_zalloc(sizeof (raidz_test_opts_t), UMEM_NOFAIL);
		opts->rto_ashift = ashift_v[a];
		opts->rto_dcols = dcols_v[d];
		opts->rto_offset = (1 << ashift_v[a]) * rand();
		opts->rto_dsize = size_v[s];
		opts->rto_v = 0; /* be quiet */

		VERIFY3P(thread_create(NULL, 0, sweep_thread, (void *) opts,
		    0, NULL, TS_RUN, maxclsyspri), !=, NULL);
	}

exit:
	LOG(D_ALL, "\nWaiting for test threads to finish...\n");
	mutex_enter(&sem_mtx);
	VERIFY(free_slots <= max_free_slots);
	while (free_slots < max_free_slots) {
		(void) cv_wait(&sem_cv, &sem_mtx);
	}
	mutex_exit(&sem_mtx);

	if (sweep_state == SWEEP_ERROR) {
		ERRMSG("Sweep test failed! Failed option: \n");
		print_opts(&failed_opts, B_TRUE);
	} else {
		if (sweep_state == SWEEP_TIMEOUT)
			LOG(D_ALL, "Test timeout (%lus). Stopping...\n",
			    (ulong_t)rto_opts.rto_sweep_timeout);

		LOG(D_ALL, "Sweep test succeeded on %lu raidz maps!\n",
		    (ulong_t)tried_comb);
	}

	mutex_destroy(&sem_mtx);

	return (sweep_state == SWEEP_ERROR ? SWEEP_ERROR : 0);
}

int
main(int argc, char **argv)
{
	size_t i;
	int err = 0;

	/* init gdb string early */
	(void) sprintf(gdb, gdb_tmpl, getpid());

	(void) setvbuf(stdout, NULL, _IOLBF, 0);

	dprintf_setup(&argc, argv);

	process_options(argc, argv);

	kernel_init(FREAD);

	/* setup random data because rand() is not reentrant */
	rand_data = (int *)umem_alloc(SPA_MAXBLOCKSIZE, UMEM_NOFAIL);
	srand((unsigned)time(NULL) * getpid());
	for (i = 0; i < SPA_MAXBLOCKSIZE / sizeof (int); i++)
		rand_data[i] = rand();

	mprotect((void *)rand_data, SPA_MAXBLOCKSIZE, PROT_READ);

	if (rto_opts.rto_benchmark) {
		run_raidz_benchmark();
	} else if (rto_opts.rto_sweep) {
		err = run_sweep();
	} else {
		err = run_test(NULL);
	}

	umem_free(rand_data, SPA_MAXBLOCKSIZE);
	kernel_fini();

	return (err);
}
/*
 * CDDL HEADER START
 *
 * The contents of this file are subject to the terms of the
 * Common Development and Distribution License (the "License").
 * You may not use this file except in compliance with the License.
 *
 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
 * or http://www.opensolaris.org/os/licensing.
 * See the License for the specific language governing permissions
 * and limitations under the License.
 *
 * When distributing Covered Code, include this CDDL HEADER in each
 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
 * If applicable, add the following below this CDDL HEADER, with the
 * fields enclosed by brackets "[]" replaced with your own identifying
 * information: Portions Copyright [yyyy] [name of copyright owner]
 *
 * CDDL HEADER END
 */

/*
 * Copyright (C) 2016 Gvozden Nešković. All rights reserved.
 * Copyright 2020 Joyent, Inc.
 */

#ifndef	RAIDZ_TEST_H
#define	RAIDZ_TEST_H

#include <sys/spa.h>

static const char *raidz_impl_names[] = {
	"original",
	"scalar",
	"sse2",
	"ssse3",
	"avx2",
	"avx512f",
	"avx512bw",
	"aarch64_neon",
	"aarch64_neonx2",
	"powerpc_altivec",
	NULL
};

typedef struct raidz_test_opts {
	size_t rto_ashift;
	size_t rto_offset;
	size_t rto_dcols;
	size_t rto_dsize;
	size_t rto_v;
	size_t rto_sweep;
	size_t rto_sweep_timeout;
	size_t rto_benchmark;
	size_t rto_sanity;
	size_t rto_gdb;

	/* non-user options */
	boolean_t rto_should_stop;

	zio_t *zio_golden;
	raidz_map_t *rm_golden;
} raidz_test_opts_t;

static const raidz_test_opts_t rto_opts_defaults = {
	.rto_ashift = 9,
	.rto_offset = 1ULL << 0,
	.rto_dcols = 8,
	.rto_dsize = 1<<19,
	.rto_v = 0,
	.rto_sweep = 0,
	.rto_benchmark = 0,
	.rto_sanity = 0,
	.rto_gdb = 0,
	.rto_should_stop = B_FALSE
};

extern raidz_test_opts_t rto_opts;

#define	D_ALL	0
#define	D_INFO	1
#define	D_DEBUG	2

#define	LOG(lvl, a...)				\
{						\
	if (rto_opts.rto_v >= lvl)		\
		(void) fprintf(stdout, a);	\
}						\

#define	LOG_OPT(lvl, opt, a...)			\
{						\
	if (opt->rto_v >= lvl)			\
		(void) fprintf(stdout, a);	\
}						\

#define	ERRMSG(a...)	(void) fprintf(stderr, a)


#define	DBLSEP "================\n"
#define	SEP    "----------------\n"


#define	raidz_alloc(size)	abd_alloc(size, B_FALSE)
#define	raidz_free(p, size)	abd_free(p)


void init_zio_abd(zio_t *zio);

void run_raidz_benchmark(void);

#endif /* RAIDZ_TEST_H */