1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License, Version 1.0 only 6 * (the "License"). You may not use this file except in compliance 7 * with the License. 8 * 9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10 * or http://www.opensolaris.org/os/licensing. 11 * See the License for the specific language governing permissions 12 * and limitations under the License. 13 * 14 * When distributing Covered Code, include this CDDL HEADER in each 15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16 * If applicable, add the following below this CDDL HEADER, with the 17 * fields enclosed by brackets "[]" replaced with your own identifying 18 * information: Portions Copyright [yyyy] [name of copyright owner] 19 * 20 * CDDL HEADER END 21 */ 22 /* 23 * Copyright 2005 Sun Microsystems, Inc. All rights reserved. 24 * Use is subject to license terms. 25 */ 26 27 #pragma ident "%Z%%M% %I% %E% SMI" 28 29 /* 30 * The objective of this program is to provide a DMU/ZAP/SPA stress test 31 * that runs entirely in userland, is easy to use, and easy to extend. 32 * 33 * The overall design of the ztest program is as follows: 34 * 35 * (1) For each major functional area (e.g. adding vdevs to a pool, 36 * creating and destroying datasets, reading and writing objects, etc) 37 * we have a simple routine to test that functionality. These 38 * individual routines do not have to do anything "stressful". 39 * 40 * (2) We turn these simple functionality tests into a stress test by 41 * running them all in parallel, with as many threads as desired, 42 * and spread across as many datasets, objects, and vdevs as desired. 43 * 44 * (3) While all this is happening, we inject faults into the pool to 45 * verify that self-healing data really works. 46 * 47 * (4) Every time we open a dataset, we change its checksum and compression 48 * functions. Thus even individual objects vary from block to block 49 * in which checksum they use and whether they're compressed. 50 * 51 * (5) To verify that we never lose on-disk consistency after a crash, 52 * we run the entire test in a child of the main process. 53 * At random times, the child self-immolates with a SIGKILL. 54 * This is the software equivalent of pulling the power cord. 55 * The parent then runs the test again, using the existing 56 * storage pool, as many times as desired. 57 * 58 * (6) To verify that we don't have future leaks or temporal incursions, 59 * many of the functional tests record the transaction group number 60 * as part of their data. When reading old data, they verify that 61 * the transaction group number is less than the current, open txg. 62 * If you add a new test, please do this if applicable. 63 * 64 * When run with no arguments, ztest runs for about five minutes and 65 * produces no output if successful. To get a little bit of information, 66 * specify -V. To get more information, specify -VV, and so on. 67 * 68 * To turn this into an overnight stress test, use -T to specify run time. 69 * 70 * You can ask more more vdevs [-v], datasets [-d], or threads [-t] 71 * to increase the pool capacity, fanout, and overall stress level. 72 * 73 * The -N(okill) option will suppress kills, so each child runs to completion. 74 * This can be useful when you're trying to distinguish temporal incursions 75 * from plain old race conditions. 76 */ 77 78 #include <sys/zfs_context.h> 79 #include <sys/spa.h> 80 #include <sys/dmu.h> 81 #include <sys/txg.h> 82 #include <sys/zap.h> 83 #include <sys/dmu_traverse.h> 84 #include <sys/dmu_objset.h> 85 #include <sys/poll.h> 86 #include <sys/stat.h> 87 #include <sys/time.h> 88 #include <sys/wait.h> 89 #include <sys/mman.h> 90 #include <sys/resource.h> 91 #include <sys/zio.h> 92 #include <sys/zio_checksum.h> 93 #include <sys/zio_compress.h> 94 #include <sys/zil.h> 95 #include <sys/vdev_impl.h> 96 #include <sys/spa_impl.h> 97 #include <sys/dsl_prop.h> 98 #include <sys/refcount.h> 99 #include <stdio.h> 100 #include <stdlib.h> 101 #include <unistd.h> 102 #include <signal.h> 103 #include <umem.h> 104 #include <dlfcn.h> 105 #include <ctype.h> 106 #include <math.h> 107 #include <sys/fs/zfs.h> 108 109 static char cmdname[] = "ztest"; 110 static char *zopt_pool = cmdname; 111 112 static uint64_t zopt_vdevs = 5; 113 static uint64_t zopt_vdevtime; 114 static int zopt_mirrors = 2; 115 static int zopt_raidz = 4; 116 static size_t zopt_vdev_size = SPA_MINDEVSIZE; 117 static int zopt_dirs = 7; 118 static int zopt_threads = 23; 119 static uint64_t zopt_passtime = 60; /* 60 seconds */ 120 static uint64_t zopt_killrate = 70; /* 70% kill rate */ 121 static int zopt_verbose = 0; 122 static int zopt_init = 1; 123 static char *zopt_dir = "/tmp"; 124 static uint64_t zopt_time = 300; /* 5 minutes */ 125 static int zopt_maxfaults; 126 127 typedef struct ztest_args { 128 char *za_pool; 129 objset_t *za_os; 130 zilog_t *za_zilog; 131 thread_t za_thread; 132 uint64_t za_instance; 133 uint64_t za_random; 134 uint64_t za_diroff; 135 uint64_t za_diroff_shared; 136 hrtime_t za_start; 137 hrtime_t za_stop; 138 hrtime_t za_kill; 139 traverse_handle_t *za_th; 140 } ztest_args_t; 141 142 typedef void ztest_func_t(ztest_args_t *); 143 144 /* 145 * Note: these aren't static because we want dladdr() to work. 146 */ 147 ztest_func_t ztest_dmu_read_write; 148 ztest_func_t ztest_dmu_write_parallel; 149 ztest_func_t ztest_dmu_object_alloc_free; 150 ztest_func_t ztest_zap; 151 ztest_func_t ztest_zap_parallel; 152 ztest_func_t ztest_traverse; 153 ztest_func_t ztest_dsl_prop_get_set; 154 ztest_func_t ztest_dmu_objset_create_destroy; 155 ztest_func_t ztest_dmu_snapshot_create_destroy; 156 ztest_func_t ztest_spa_create_destroy; 157 ztest_func_t ztest_fault_inject; 158 ztest_func_t ztest_vdev_attach_detach; 159 ztest_func_t ztest_vdev_LUN_growth; 160 ztest_func_t ztest_vdev_add_remove; 161 ztest_func_t ztest_scrub; 162 ztest_func_t ztest_spa_rename; 163 164 typedef struct ztest_info { 165 ztest_func_t *zi_func; /* test function */ 166 uint64_t *zi_interval; /* execute every <interval> seconds */ 167 uint64_t zi_calls; /* per-pass count */ 168 uint64_t zi_call_time; /* per-pass time */ 169 uint64_t zi_call_total; /* cumulative total */ 170 uint64_t zi_call_target; /* target cumulative total */ 171 } ztest_info_t; 172 173 uint64_t zopt_always = 0; /* all the time */ 174 uint64_t zopt_often = 1; /* every second */ 175 uint64_t zopt_sometimes = 10; /* every 10 seconds */ 176 uint64_t zopt_rarely = 60; /* every 60 seconds */ 177 178 ztest_info_t ztest_info[] = { 179 { ztest_dmu_read_write, &zopt_always }, 180 { ztest_dmu_write_parallel, &zopt_always }, 181 { ztest_dmu_object_alloc_free, &zopt_always }, 182 { ztest_zap, &zopt_always }, 183 { ztest_zap_parallel, &zopt_always }, 184 { ztest_traverse, &zopt_often }, 185 { ztest_dsl_prop_get_set, &zopt_sometimes }, 186 { ztest_dmu_objset_create_destroy, &zopt_sometimes }, 187 { ztest_dmu_snapshot_create_destroy, &zopt_sometimes }, 188 { ztest_spa_create_destroy, &zopt_sometimes }, 189 { ztest_fault_inject, &zopt_sometimes }, 190 { ztest_spa_rename, &zopt_rarely }, 191 { ztest_vdev_attach_detach, &zopt_rarely }, 192 { ztest_vdev_LUN_growth, &zopt_rarely }, 193 { ztest_vdev_add_remove, &zopt_vdevtime }, 194 { ztest_scrub, &zopt_vdevtime }, 195 }; 196 197 #define ZTEST_FUNCS (sizeof (ztest_info) / sizeof (ztest_info_t)) 198 199 #define ZTEST_SYNC_LOCKS 16 200 201 /* 202 * Stuff we need to share writably between parent and child. 203 */ 204 typedef struct ztest_shared { 205 mutex_t zs_vdev_lock; 206 rwlock_t zs_name_lock; 207 uint64_t zs_vdev_primaries; 208 uint64_t zs_enospc_count; 209 hrtime_t zs_start_time; 210 hrtime_t zs_stop_time; 211 uint64_t zs_alloc; 212 uint64_t zs_space; 213 ztest_info_t zs_info[ZTEST_FUNCS]; 214 mutex_t zs_sync_lock[ZTEST_SYNC_LOCKS]; 215 uint64_t zs_seq[ZTEST_SYNC_LOCKS]; 216 } ztest_shared_t; 217 218 typedef struct ztest_block_tag { 219 uint64_t bt_objset; 220 uint64_t bt_object; 221 uint64_t bt_offset; 222 uint64_t bt_txg; 223 uint64_t bt_thread; 224 uint64_t bt_seq; 225 } ztest_block_tag_t; 226 227 static char ztest_dev_template[] = "%s/%s.%llua"; 228 static ztest_shared_t *ztest_shared; 229 230 static int ztest_random_fd; 231 static int ztest_dump_core = 1; 232 233 extern uint64_t zio_gang_bang; 234 235 #define ZTEST_DIROBJ 1 236 #define ZTEST_MICROZAP_OBJ 2 237 #define ZTEST_FATZAP_OBJ 3 238 239 #define ZTEST_DIROBJ_BLOCKSIZE (1 << 10) 240 #define ZTEST_DIRSIZE 256 241 242 /* 243 * These libumem hooks provide a reasonable set of defaults for the allocator's 244 * debugging facilities. 245 */ 246 const char * 247 _umem_debug_init() 248 { 249 return ("default,verbose"); /* $UMEM_DEBUG setting */ 250 } 251 252 const char * 253 _umem_logging_init(void) 254 { 255 return ("fail,contents"); /* $UMEM_LOGGING setting */ 256 } 257 258 #define FATAL_MSG_SZ 1024 259 260 char *fatal_msg; 261 262 static void 263 fatal(int do_perror, char *message, ...) 264 { 265 va_list args; 266 int save_errno = errno; 267 char buf[FATAL_MSG_SZ]; 268 269 (void) fflush(stdout); 270 271 va_start(args, message); 272 (void) sprintf(buf, "ztest: "); 273 /* LINTED */ 274 (void) vsprintf(buf + strlen(buf), message, args); 275 va_end(args); 276 if (do_perror) { 277 (void) snprintf(buf + strlen(buf), FATAL_MSG_SZ - strlen(buf), 278 ": %s", strerror(save_errno)); 279 } 280 (void) fprintf(stderr, "%s\n", buf); 281 fatal_msg = buf; /* to ease debugging */ 282 if (ztest_dump_core) 283 abort(); 284 exit(3); 285 } 286 287 static int 288 str2shift(const char *buf) 289 { 290 const char *ends = "BKMGTPEZ"; 291 int i; 292 293 if (buf[0] == '\0') 294 return (0); 295 for (i = 0; i < strlen(ends); i++) { 296 if (toupper(buf[0]) == ends[i]) 297 break; 298 } 299 if (i == strlen(ends)) 300 fatal(0, "invalid bytes suffix: %s", buf); 301 if (buf[1] == '\0' || (toupper(buf[1]) == 'B' && buf[2] == '\0')) { 302 return (10*i); 303 } 304 fatal(0, "invalid bytes suffix: %s", buf); 305 return (-1); 306 } 307 308 static uint64_t 309 nicenumtoull(const char *buf) 310 { 311 char *end; 312 uint64_t val; 313 314 val = strtoull(buf, &end, 0); 315 if (end == buf) { 316 fatal(0, "bad numeric value: %s", buf); 317 } else if (end[0] == '.') { 318 double fval = strtod(buf, &end); 319 fval *= pow(2, str2shift(end)); 320 if (fval > UINT64_MAX) 321 fatal(0, "value too large: %s", buf); 322 val = (uint64_t)fval; 323 } else { 324 int shift = str2shift(end); 325 if (shift >= 64 || (val << shift) >> shift != val) 326 fatal(0, "value too large: %s", buf); 327 val <<= shift; 328 } 329 return (val); 330 } 331 332 static void 333 usage(void) 334 { 335 char nice_vdev_size[10]; 336 char nice_gang_bang[10]; 337 338 nicenum(zopt_vdev_size, nice_vdev_size); 339 nicenum(zio_gang_bang, nice_gang_bang); 340 341 (void) printf("Usage: %s\n" 342 "\t[-v vdevs (default: %llu)]\n" 343 "\t[-s size_of_each_vdev (default: %s)]\n" 344 "\t[-m mirror_copies (default: %d)]\n" 345 "\t[-r raidz_disks (default: %d)]\n" 346 "\t[-d datasets (default: %d)]\n" 347 "\t[-t threads (default: %d)]\n" 348 "\t[-g gang_block_threshold (default: %s)]\n" 349 "\t[-i initialize pool i times (default: %d)]\n" 350 "\t[-k kill percentage (default: %llu%%)]\n" 351 "\t[-p pool_name (default: %s)]\n" 352 "\t[-f file directory for vdev files (default: %s)]\n" 353 "\t[-V(erbose)] (use multiple times for ever more blather)\n" 354 "\t[-E(xisting)] (use existing pool instead of creating new one\n" 355 "\t[-I(mport)] (discover and import existing pools)\n" 356 "\t[-T time] total run time (default: %llu sec)\n" 357 "\t[-P passtime] time per pass (default: %llu sec)\n" 358 "", 359 cmdname, 360 (u_longlong_t)zopt_vdevs, /* -v */ 361 nice_vdev_size, /* -s */ 362 zopt_mirrors, /* -m */ 363 zopt_raidz, /* -r */ 364 zopt_dirs, /* -d */ 365 zopt_threads, /* -t */ 366 nice_gang_bang, /* -g */ 367 zopt_init, /* -i */ 368 (u_longlong_t)zopt_killrate, /* -k */ 369 zopt_pool, /* -p */ 370 zopt_dir, /* -f */ 371 (u_longlong_t)zopt_time, /* -T */ 372 (u_longlong_t)zopt_passtime); /* -P */ 373 exit(1); 374 } 375 376 static uint64_t 377 ztest_random(uint64_t range) 378 { 379 uint64_t r; 380 381 if (range == 0) 382 return (0); 383 384 if (read(ztest_random_fd, &r, sizeof (r)) != sizeof (r)) 385 fatal(1, "short read from /dev/urandom"); 386 387 return (r % range); 388 } 389 390 static void 391 ztest_record_enospc(char *s) 392 { 393 dprintf("ENOSPC doing: %s\n", s ? s : "<unknown>"); 394 ztest_shared->zs_enospc_count++; 395 } 396 397 static void 398 process_options(int argc, char **argv) 399 { 400 int opt; 401 uint64_t value; 402 403 /* By default, test gang blocks for blocks 32K and greater */ 404 zio_gang_bang = 32 << 10; 405 406 while ((opt = getopt(argc, argv, 407 "v:s:m:r:c:d:t:g:i:k:p:f:VEIT:P:S")) != EOF) { 408 value = 0; 409 switch (opt) { 410 case 'v': 411 case 's': 412 case 'm': 413 case 'r': 414 case 'c': 415 case 'd': 416 case 't': 417 case 'g': 418 case 'i': 419 case 'k': 420 case 'T': 421 case 'P': 422 value = nicenumtoull(optarg); 423 } 424 switch (opt) { 425 case 'v': 426 zopt_vdevs = value; 427 break; 428 case 's': 429 zopt_vdev_size = MAX(SPA_MINDEVSIZE, value); 430 break; 431 case 'm': 432 zopt_mirrors = value; 433 break; 434 case 'r': 435 zopt_raidz = MAX(1, value); 436 break; 437 case 'd': 438 zopt_dirs = MAX(1, value); 439 break; 440 case 't': 441 zopt_threads = MAX(1, value); 442 break; 443 case 'g': 444 zio_gang_bang = MAX(SPA_MINBLOCKSIZE << 1, value); 445 break; 446 case 'i': 447 zopt_init = value; 448 break; 449 case 'k': 450 zopt_killrate = value; 451 break; 452 case 'p': 453 zopt_pool = strdup(optarg); 454 break; 455 case 'f': 456 zopt_dir = strdup(optarg); 457 break; 458 case 'V': 459 zopt_verbose++; 460 break; 461 case 'E': 462 zopt_init = 0; 463 break; 464 case 'T': 465 zopt_time = value; 466 break; 467 case 'P': 468 zopt_passtime = MAX(1, value); 469 break; 470 case '?': 471 default: 472 usage(); 473 break; 474 } 475 } 476 477 zopt_vdevtime = (zopt_vdevs > 0 ? zopt_time / zopt_vdevs : UINT64_MAX); 478 zopt_maxfaults = MAX(zopt_mirrors, 1) * (zopt_raidz >= 2 ? 2 : 1) - 1; 479 } 480 481 static nvlist_t * 482 make_vdev_file(size_t size) 483 { 484 char dev_name[MAXPATHLEN]; 485 uint64_t vdev; 486 int fd; 487 nvlist_t *file; 488 489 if (size == 0) { 490 (void) snprintf(dev_name, sizeof (dev_name), "%s", 491 "/dev/bogus"); 492 } else { 493 vdev = ztest_shared->zs_vdev_primaries++; 494 (void) sprintf(dev_name, ztest_dev_template, 495 zopt_dir, zopt_pool, vdev); 496 497 fd = open(dev_name, O_RDWR | O_CREAT | O_TRUNC, 0666); 498 if (fd == -1) 499 fatal(1, "can't open %s", dev_name); 500 if (ftruncate(fd, size) != 0) 501 fatal(1, "can't ftruncate %s", dev_name); 502 (void) close(fd); 503 } 504 505 VERIFY(nvlist_alloc(&file, NV_UNIQUE_NAME, 0) == 0); 506 VERIFY(nvlist_add_string(file, ZPOOL_CONFIG_TYPE, VDEV_TYPE_FILE) == 0); 507 VERIFY(nvlist_add_string(file, ZPOOL_CONFIG_PATH, dev_name) == 0); 508 509 return (file); 510 } 511 512 static nvlist_t * 513 make_vdev_raidz(size_t size, int r) 514 { 515 nvlist_t *raidz, **child; 516 int c; 517 518 if (r < 2) 519 return (make_vdev_file(size)); 520 521 child = umem_alloc(r * sizeof (nvlist_t *), UMEM_NOFAIL); 522 523 for (c = 0; c < r; c++) 524 child[c] = make_vdev_file(size); 525 526 VERIFY(nvlist_alloc(&raidz, NV_UNIQUE_NAME, 0) == 0); 527 VERIFY(nvlist_add_string(raidz, ZPOOL_CONFIG_TYPE, 528 VDEV_TYPE_RAIDZ) == 0); 529 VERIFY(nvlist_add_nvlist_array(raidz, ZPOOL_CONFIG_CHILDREN, 530 child, r) == 0); 531 532 for (c = 0; c < r; c++) 533 nvlist_free(child[c]); 534 535 umem_free(child, r * sizeof (nvlist_t *)); 536 537 return (raidz); 538 } 539 540 static nvlist_t * 541 make_vdev_mirror(size_t size, int r, int m) 542 { 543 nvlist_t *mirror, **child; 544 int c; 545 546 if (m < 1) 547 return (make_vdev_raidz(size, r)); 548 549 child = umem_alloc(m * sizeof (nvlist_t *), UMEM_NOFAIL); 550 551 for (c = 0; c < m; c++) 552 child[c] = make_vdev_raidz(size, r); 553 554 VERIFY(nvlist_alloc(&mirror, NV_UNIQUE_NAME, 0) == 0); 555 VERIFY(nvlist_add_string(mirror, ZPOOL_CONFIG_TYPE, 556 VDEV_TYPE_MIRROR) == 0); 557 VERIFY(nvlist_add_nvlist_array(mirror, ZPOOL_CONFIG_CHILDREN, 558 child, m) == 0); 559 560 for (c = 0; c < m; c++) 561 nvlist_free(child[c]); 562 563 umem_free(child, m * sizeof (nvlist_t *)); 564 565 return (mirror); 566 } 567 568 static nvlist_t * 569 make_vdev_root(size_t size, int r, int m, int t) 570 { 571 nvlist_t *root, **child; 572 int c; 573 574 ASSERT(t > 0); 575 576 child = umem_alloc(t * sizeof (nvlist_t *), UMEM_NOFAIL); 577 578 for (c = 0; c < t; c++) 579 child[c] = make_vdev_mirror(size, r, m); 580 581 VERIFY(nvlist_alloc(&root, NV_UNIQUE_NAME, 0) == 0); 582 VERIFY(nvlist_add_string(root, ZPOOL_CONFIG_TYPE, VDEV_TYPE_ROOT) == 0); 583 VERIFY(nvlist_add_nvlist_array(root, ZPOOL_CONFIG_CHILDREN, 584 child, t) == 0); 585 586 for (c = 0; c < t; c++) 587 nvlist_free(child[c]); 588 589 umem_free(child, t * sizeof (nvlist_t *)); 590 591 return (root); 592 } 593 594 static void 595 ztest_set_random_blocksize(objset_t *os, uint64_t object, dmu_tx_t *tx) 596 { 597 int bs = SPA_MINBLOCKSHIFT + 598 ztest_random(SPA_MAXBLOCKSHIFT - SPA_MINBLOCKSHIFT + 1); 599 int ibs = DN_MIN_INDBLKSHIFT + 600 ztest_random(DN_MAX_INDBLKSHIFT - DN_MIN_INDBLKSHIFT + 1); 601 int error; 602 603 error = dmu_object_set_blocksize(os, object, 1ULL << bs, ibs, tx); 604 if (error) { 605 char osname[300]; 606 dmu_objset_name(os, osname); 607 fatal(0, "dmu_object_set_blocksize('%s', %llu, %d, %d) = %d", 608 osname, object, 1 << bs, ibs, error); 609 } 610 } 611 612 static uint8_t 613 ztest_random_checksum(void) 614 { 615 uint8_t checksum; 616 617 do { 618 checksum = ztest_random(ZIO_CHECKSUM_FUNCTIONS); 619 } while (zio_checksum_table[checksum].ci_zbt); 620 621 if (checksum == ZIO_CHECKSUM_OFF) 622 checksum = ZIO_CHECKSUM_ON; 623 624 return (checksum); 625 } 626 627 static uint8_t 628 ztest_random_compress(void) 629 { 630 return ((uint8_t)ztest_random(ZIO_COMPRESS_FUNCTIONS)); 631 } 632 633 typedef struct ztest_replay { 634 objset_t *zr_os; 635 uint64_t zr_assign; 636 } ztest_replay_t; 637 638 static int 639 ztest_replay_create(ztest_replay_t *zr, lr_create_t *lr, boolean_t byteswap) 640 { 641 objset_t *os = zr->zr_os; 642 dmu_tx_t *tx; 643 int error; 644 645 if (byteswap) 646 byteswap_uint64_array(lr, sizeof (*lr)); 647 648 tx = dmu_tx_create(os); 649 dmu_tx_hold_bonus(tx, DMU_NEW_OBJECT); 650 error = dmu_tx_assign(tx, zr->zr_assign); 651 if (error) { 652 dmu_tx_abort(tx); 653 return (error); 654 } 655 656 error = dmu_object_claim(os, lr->lr_doid, lr->lr_mode, 0, 657 DMU_OT_NONE, 0, tx); 658 ASSERT(error == 0); 659 dmu_tx_commit(tx); 660 661 if (zopt_verbose >= 5) { 662 char osname[MAXNAMELEN]; 663 dmu_objset_name(os, osname); 664 (void) printf("replay create of %s object %llu" 665 " in txg %llu = %d\n", 666 osname, (u_longlong_t)lr->lr_doid, 667 (u_longlong_t)zr->zr_assign, error); 668 } 669 670 return (error); 671 } 672 673 static int 674 ztest_replay_remove(ztest_replay_t *zr, lr_remove_t *lr, boolean_t byteswap) 675 { 676 objset_t *os = zr->zr_os; 677 dmu_tx_t *tx; 678 int error; 679 680 if (byteswap) 681 byteswap_uint64_array(lr, sizeof (*lr)); 682 683 tx = dmu_tx_create(os); 684 dmu_tx_hold_free(tx, lr->lr_doid, 0, DMU_OBJECT_END); 685 error = dmu_tx_assign(tx, zr->zr_assign); 686 if (error) { 687 dmu_tx_abort(tx); 688 return (error); 689 } 690 691 error = dmu_object_free(os, lr->lr_doid, tx); 692 dmu_tx_commit(tx); 693 694 return (error); 695 } 696 697 zil_replay_func_t *ztest_replay_vector[TX_MAX_TYPE] = { 698 NULL, /* 0 no such transaction type */ 699 ztest_replay_create, /* TX_CREATE */ 700 NULL, /* TX_MKDIR */ 701 NULL, /* TX_MKXATTR */ 702 NULL, /* TX_SYMLINK */ 703 ztest_replay_remove, /* TX_REMOVE */ 704 NULL, /* TX_RMDIR */ 705 NULL, /* TX_LINK */ 706 NULL, /* TX_RENAME */ 707 NULL, /* TX_WRITE */ 708 NULL, /* TX_TRUNCATE */ 709 NULL, /* TX_SETATTR */ 710 NULL, /* TX_ACL */ 711 }; 712 713 /* 714 * Verify that we can't destroy an active pool, create an existing pool, 715 * or create a pool with a bad vdev spec. 716 */ 717 void 718 ztest_spa_create_destroy(ztest_args_t *za) 719 { 720 int error; 721 spa_t *spa; 722 nvlist_t *nvroot; 723 724 /* 725 * Attempt to create using a bad file. 726 */ 727 nvroot = make_vdev_root(0, 0, 0, 1); 728 error = spa_create("ztest_bad_file", nvroot, NULL); 729 nvlist_free(nvroot); 730 if (error != ENOENT) 731 fatal(0, "spa_create(bad_file) = %d", error); 732 733 /* 734 * Attempt to create using a bad mirror. 735 */ 736 nvroot = make_vdev_root(0, 0, 2, 1); 737 error = spa_create("ztest_bad_mirror", nvroot, NULL); 738 nvlist_free(nvroot); 739 if (error != ENOENT) 740 fatal(0, "spa_create(bad_mirror) = %d", error); 741 742 /* 743 * Attempt to create an existing pool. It shouldn't matter 744 * what's in the nvroot; we should fail with EEXIST. 745 */ 746 (void) rw_rdlock(&ztest_shared->zs_name_lock); 747 nvroot = make_vdev_root(0, 0, 0, 1); 748 error = spa_create(za->za_pool, nvroot, NULL); 749 nvlist_free(nvroot); 750 if (error != EEXIST) 751 fatal(0, "spa_create(whatever) = %d", error); 752 753 error = spa_open(za->za_pool, &spa, FTAG); 754 if (error) 755 fatal(0, "spa_open() = %d", error); 756 757 error = spa_destroy(za->za_pool); 758 if (error != EBUSY) 759 fatal(0, "spa_destroy() = %d", error); 760 761 spa_close(spa, FTAG); 762 (void) rw_unlock(&ztest_shared->zs_name_lock); 763 } 764 765 /* 766 * Verify that vdev_add() works as expected. 767 */ 768 void 769 ztest_vdev_add_remove(ztest_args_t *za) 770 { 771 spa_t *spa = dmu_objset_spa(za->za_os); 772 uint64_t leaves = MAX(zopt_mirrors, 1) * zopt_raidz; 773 nvlist_t *nvroot; 774 int error; 775 776 if (zopt_verbose >= 6) 777 (void) printf("adding vdev\n"); 778 779 (void) mutex_lock(&ztest_shared->zs_vdev_lock); 780 781 spa_config_enter(spa, RW_READER); 782 783 ztest_shared->zs_vdev_primaries = 784 spa->spa_root_vdev->vdev_children * leaves; 785 786 spa_config_exit(spa); 787 788 nvroot = make_vdev_root(zopt_vdev_size, zopt_raidz, zopt_mirrors, 1); 789 error = spa_vdev_add(spa, nvroot); 790 nvlist_free(nvroot); 791 792 (void) mutex_unlock(&ztest_shared->zs_vdev_lock); 793 794 if (error == ENOSPC) 795 ztest_record_enospc("spa_vdev_add"); 796 else if (error != 0) 797 fatal(0, "spa_vdev_add() = %d", error); 798 799 if (zopt_verbose >= 6) 800 (void) printf("spa_vdev_add = %d, as expected\n", error); 801 } 802 803 /* 804 * Verify that we can attach and detach devices. 805 */ 806 void 807 ztest_vdev_attach_detach(ztest_args_t *za) 808 { 809 spa_t *spa = dmu_objset_spa(za->za_os); 810 vdev_t *rvd = spa->spa_root_vdev; 811 vdev_t *vd0, *vd1, *pvd; 812 nvlist_t *root, *file; 813 uint64_t leaves = MAX(zopt_mirrors, 1) * zopt_raidz; 814 uint64_t leaf, top; 815 size_t size0, size1; 816 char path0[MAXPATHLEN], path1[MAXPATHLEN]; 817 int replacing; 818 int error, expected_error; 819 int fd; 820 821 (void) mutex_lock(&ztest_shared->zs_vdev_lock); 822 823 spa_config_enter(spa, RW_READER); 824 825 /* 826 * Decide whether to do an attach or a replace. 827 */ 828 replacing = ztest_random(2); 829 830 /* 831 * Pick a random top-level vdev. 832 */ 833 top = ztest_random(rvd->vdev_children); 834 835 /* 836 * Pick a random leaf within it. 837 */ 838 leaf = ztest_random(leaves); 839 840 /* 841 * Generate the path to this leaf. The filename will end with 'a'. 842 * We'll alternate replacements with a filename that ends with 'b'. 843 */ 844 (void) snprintf(path0, sizeof (path0), 845 ztest_dev_template, zopt_dir, zopt_pool, top * leaves + leaf); 846 847 bcopy(path0, path1, MAXPATHLEN); 848 849 /* 850 * If the 'a' file isn't part of the pool, the 'b' file must be. 851 */ 852 if (vdev_lookup_by_path(rvd, path0) == NULL) 853 path0[strlen(path0) - 1] = 'b'; 854 else 855 path1[strlen(path1) - 1] = 'b'; 856 857 /* 858 * Now path0 represents something that's already in the pool, 859 * and path1 is the thing we'll try to attach. 860 */ 861 vd0 = vdev_lookup_by_path(rvd, path0); 862 vd1 = vdev_lookup_by_path(rvd, path1); 863 ASSERT(vd0 != NULL); 864 pvd = vd0->vdev_parent; 865 866 867 /* 868 * Make size1 a little bigger or smaller than size0. 869 * If it's smaller, the attach should fail. 870 * If it's larger, and we're doing a replace, 871 * we should get dynamic LUN growth when we're done. 872 */ 873 size0 = vd0->vdev_psize; 874 size1 = 10 * size0 / (9 + ztest_random(3)); 875 876 /* 877 * If pvd is not a mirror or root, the attach should fail with ENOTSUP, 878 * unless it's a replace; in that case any non-replacing parent is OK. 879 * 880 * If vd1 is already part of the pool, it should fail with EBUSY. 881 * 882 * If vd1 is too small, it should fail with EOVERFLOW. 883 */ 884 if (pvd->vdev_ops != &vdev_mirror_ops && 885 pvd->vdev_ops != &vdev_root_ops && 886 (!replacing || pvd->vdev_ops == &vdev_replacing_ops)) 887 expected_error = ENOTSUP; 888 else if (vd1 != NULL) 889 expected_error = EBUSY; 890 else if (size1 < size0) 891 expected_error = EOVERFLOW; 892 else 893 expected_error = 0; 894 895 /* 896 * If vd1 isn't already part of the pool, create it. 897 */ 898 if (vd1 == NULL) { 899 fd = open(path1, O_RDWR | O_CREAT | O_TRUNC, 0666); 900 if (fd == -1) 901 fatal(1, "can't open %s", path1); 902 if (ftruncate(fd, size1) != 0) 903 fatal(1, "can't ftruncate %s", path1); 904 (void) close(fd); 905 } 906 907 spa_config_exit(spa); 908 909 /* 910 * Build the nvlist describing path1. 911 */ 912 VERIFY(nvlist_alloc(&file, NV_UNIQUE_NAME, 0) == 0); 913 VERIFY(nvlist_add_string(file, ZPOOL_CONFIG_TYPE, VDEV_TYPE_FILE) == 0); 914 VERIFY(nvlist_add_string(file, ZPOOL_CONFIG_PATH, path1) == 0); 915 916 VERIFY(nvlist_alloc(&root, NV_UNIQUE_NAME, 0) == 0); 917 VERIFY(nvlist_add_string(root, ZPOOL_CONFIG_TYPE, VDEV_TYPE_ROOT) == 0); 918 VERIFY(nvlist_add_nvlist_array(root, ZPOOL_CONFIG_CHILDREN, 919 &file, 1) == 0); 920 921 error = spa_vdev_attach(spa, path0, root, replacing); 922 923 nvlist_free(file); 924 nvlist_free(root); 925 926 /* 927 * If our parent was the replacing vdev, but the replace completed, 928 * then instead of failing with ENOTSUP we may either succeed, 929 * fail with ENODEV, or fail with EOVERFLOW. 930 */ 931 if (expected_error == ENOTSUP && 932 (error == 0 || error == ENODEV || error == EOVERFLOW)) 933 expected_error = error; 934 935 /* 936 * If someone grew the LUN, the replacement may be too small. 937 */ 938 if (error == EOVERFLOW) 939 expected_error = error; 940 941 if (error != expected_error) { 942 fatal(0, "attach (%s, %s, %d) returned %d, expected %d", 943 path0, path1, replacing, error, expected_error); 944 } 945 946 (void) mutex_unlock(&ztest_shared->zs_vdev_lock); 947 } 948 949 /* 950 * Verify that dynamic LUN growth works as expected. 951 */ 952 /* ARGSUSED */ 953 void 954 ztest_vdev_LUN_growth(ztest_args_t *za) 955 { 956 spa_t *spa = dmu_objset_spa(za->za_os); 957 char dev_name[MAXPATHLEN]; 958 uint64_t leaves = MAX(zopt_mirrors, 1) * zopt_raidz; 959 uint64_t vdev; 960 size_t fsize; 961 int fd; 962 963 (void) mutex_lock(&ztest_shared->zs_vdev_lock); 964 965 /* 966 * Pick a random leaf vdev. 967 */ 968 spa_config_enter(spa, RW_READER); 969 vdev = ztest_random(spa->spa_root_vdev->vdev_children * leaves); 970 spa_config_exit(spa); 971 972 (void) sprintf(dev_name, ztest_dev_template, zopt_dir, zopt_pool, vdev); 973 974 if ((fd = open(dev_name, O_RDWR)) != -1) { 975 /* 976 * Determine the size. 977 */ 978 fsize = lseek(fd, 0, SEEK_END); 979 980 /* 981 * If it's less than 2x the original size, grow by around 3%. 982 */ 983 if (fsize < 2 * zopt_vdev_size) { 984 size_t newsize = fsize + ztest_random(fsize / 32); 985 (void) ftruncate(fd, newsize); 986 if (zopt_verbose >= 6) { 987 (void) printf("%s grew from %lu to %lu bytes\n", 988 dev_name, (ulong_t)fsize, (ulong_t)newsize); 989 } 990 } 991 (void) close(fd); 992 } 993 994 (void) mutex_unlock(&ztest_shared->zs_vdev_lock); 995 } 996 997 /* ARGSUSED */ 998 static void 999 ztest_create_cb(objset_t *os, void *arg, dmu_tx_t *tx) 1000 { 1001 /* 1002 * Create the directory object. 1003 */ 1004 VERIFY(dmu_object_claim(os, ZTEST_DIROBJ, 1005 DMU_OT_UINT64_OTHER, ZTEST_DIROBJ_BLOCKSIZE, 1006 DMU_OT_UINT64_OTHER, sizeof (ztest_block_tag_t), tx) == 0); 1007 1008 VERIFY(zap_create_claim(os, ZTEST_MICROZAP_OBJ, 1009 DMU_OT_ZAP_OTHER, DMU_OT_NONE, 0, tx) == 0); 1010 1011 VERIFY(zap_create_claim(os, ZTEST_FATZAP_OBJ, 1012 DMU_OT_ZAP_OTHER, DMU_OT_NONE, 0, tx) == 0); 1013 } 1014 1015 /* ARGSUSED */ 1016 static void 1017 ztest_destroy_cb(char *name, void *arg) 1018 { 1019 objset_t *os; 1020 dmu_object_info_t doi; 1021 int error; 1022 1023 /* 1024 * Verify that the dataset contains a directory object. 1025 */ 1026 error = dmu_objset_open(name, DMU_OST_OTHER, 1027 DS_MODE_STANDARD | DS_MODE_READONLY, &os); 1028 ASSERT3U(error, ==, 0); 1029 error = dmu_object_info(os, ZTEST_DIROBJ, &doi); 1030 ASSERT3U(error, ==, 0); 1031 ASSERT3U(doi.doi_type, ==, DMU_OT_UINT64_OTHER); 1032 ASSERT3S(doi.doi_physical_blks, >=, 0); 1033 dmu_objset_close(os); 1034 1035 /* 1036 * Destroy the dataset. 1037 */ 1038 error = dmu_objset_destroy(name); 1039 ASSERT3U(error, ==, 0); 1040 } 1041 1042 /* 1043 * Verify that dmu_objset_{create,destroy,open,close} work as expected. 1044 */ 1045 static uint64_t 1046 ztest_log_create(zilog_t *zilog, dmu_tx_t *tx, uint64_t object, int mode) 1047 { 1048 itx_t *itx; 1049 lr_create_t *lr; 1050 size_t namesize; 1051 char name[24]; 1052 1053 (void) sprintf(name, "ZOBJ_%llu", (u_longlong_t)object); 1054 namesize = strlen(name) + 1; 1055 1056 itx = zil_itx_create(TX_CREATE, sizeof (*lr) + namesize + 1057 ztest_random(ZIL_MAX_BLKSZ)); 1058 lr = (lr_create_t *)&itx->itx_lr; 1059 bzero(lr + 1, lr->lr_common.lrc_reclen - sizeof (*lr)); 1060 lr->lr_doid = object; 1061 lr->lr_foid = 0; 1062 lr->lr_mode = mode; 1063 lr->lr_uid = 0; 1064 lr->lr_gid = 0; 1065 lr->lr_gen = dmu_tx_get_txg(tx); 1066 lr->lr_crtime[0] = time(NULL); 1067 lr->lr_crtime[1] = 0; 1068 lr->lr_rdev = 0; 1069 bcopy(name, (char *)(lr + 1), namesize); 1070 1071 return (zil_itx_assign(zilog, itx, tx)); 1072 } 1073 1074 #ifndef lint 1075 static uint64_t 1076 ztest_log_remove(zilog_t *zilog, dmu_tx_t *tx, uint64_t object) 1077 { 1078 itx_t *itx; 1079 lr_remove_t *lr; 1080 size_t namesize; 1081 char name[24]; 1082 1083 (void) sprintf(name, "ZOBJ_%llu", (u_longlong_t)object); 1084 namesize = strlen(name) + 1; 1085 1086 itx = zil_itx_create(TX_REMOVE, sizeof (*lr) + namesize + 1087 ztest_random(8000)); 1088 lr = (lr_remove_t *)&itx->itx_lr; 1089 lr->lr_doid = object; 1090 bcopy(name, (char *)(lr + 1), namesize); 1091 1092 return (zil_itx_assign(zilog, itx, tx)); 1093 } 1094 #endif /* lint */ 1095 1096 void 1097 ztest_dmu_objset_create_destroy(ztest_args_t *za) 1098 { 1099 int error; 1100 objset_t *os; 1101 char name[100]; 1102 int mode, basemode, expected_error; 1103 zilog_t *zilog; 1104 uint64_t seq; 1105 uint64_t objects; 1106 ztest_replay_t zr; 1107 1108 (void) rw_rdlock(&ztest_shared->zs_name_lock); 1109 (void) snprintf(name, 100, "%s/%s_temp_%llu", za->za_pool, za->za_pool, 1110 (u_longlong_t)za->za_instance); 1111 1112 basemode = DS_MODE_LEVEL(za->za_instance); 1113 if (basemode == DS_MODE_NONE) 1114 basemode++; 1115 1116 /* 1117 * If this dataset exists from a previous run, process its replay log 1118 * half of the time. If we don't replay it, then dmu_objset_destroy() 1119 * (invoked from ztest_destroy_cb() below) should just throw it away. 1120 */ 1121 if (ztest_random(2) == 0 && 1122 dmu_objset_open(name, DMU_OST_OTHER, DS_MODE_PRIMARY, &os) == 0) { 1123 zr.zr_os = os; 1124 zil_replay(os, &zr, &zr.zr_assign, ztest_replay_vector, NULL); 1125 dmu_objset_close(os); 1126 } 1127 1128 /* 1129 * There may be an old instance of the dataset we're about to 1130 * create lying around from a previous run. If so, destroy it 1131 * and all of its snapshots. 1132 */ 1133 dmu_objset_find(name, ztest_destroy_cb, NULL, DS_FIND_SNAPSHOTS); 1134 1135 /* 1136 * Verify that the destroyed dataset is no longer in the namespace. 1137 */ 1138 error = dmu_objset_open(name, DMU_OST_OTHER, basemode, &os); 1139 if (error != ENOENT) 1140 fatal(1, "dmu_objset_open(%s) found destroyed dataset %p", 1141 name, os); 1142 1143 /* 1144 * Verify that we can create a new dataset. 1145 */ 1146 error = dmu_objset_create(name, DMU_OST_OTHER, NULL, ztest_create_cb, 1147 NULL); 1148 if (error) { 1149 if (error == ENOSPC) { 1150 ztest_record_enospc("dmu_objset_create"); 1151 (void) rw_unlock(&ztest_shared->zs_name_lock); 1152 return; 1153 } 1154 fatal(0, "dmu_objset_create(%s) = %d", name, error); 1155 } 1156 1157 error = dmu_objset_open(name, DMU_OST_OTHER, basemode, &os); 1158 if (error) { 1159 fatal(0, "dmu_objset_open(%s) = %d", name, error); 1160 } 1161 1162 /* 1163 * Open the intent log for it. 1164 */ 1165 zilog = zil_open(os, NULL); 1166 1167 /* 1168 * Put a random number of objects in there. 1169 */ 1170 objects = ztest_random(50); 1171 seq = 0; 1172 while (objects-- != 0) { 1173 uint64_t object; 1174 dmu_tx_t *tx = dmu_tx_create(os); 1175 dmu_tx_hold_write(tx, DMU_NEW_OBJECT, 0, sizeof (name)); 1176 error = dmu_tx_assign(tx, TXG_WAIT); 1177 if (error) { 1178 dmu_tx_abort(tx); 1179 } else { 1180 object = dmu_object_alloc(os, DMU_OT_UINT64_OTHER, 0, 1181 DMU_OT_NONE, 0, tx); 1182 ztest_set_random_blocksize(os, object, tx); 1183 seq = ztest_log_create(zilog, tx, object, 1184 DMU_OT_UINT64_OTHER); 1185 dmu_write(os, object, 0, sizeof (name), name, tx); 1186 dmu_tx_commit(tx); 1187 } 1188 if (ztest_random(5) == 0) { 1189 zil_commit(zilog, seq, FSYNC); 1190 } 1191 if (ztest_random(5) == 0) { 1192 error = zil_suspend(zilog); 1193 if (error == 0) { 1194 zil_resume(zilog); 1195 } 1196 } 1197 } 1198 1199 /* 1200 * Verify that we cannot create an existing dataset. 1201 */ 1202 error = dmu_objset_create(name, DMU_OST_OTHER, NULL, NULL, NULL); 1203 if (error != EEXIST) 1204 fatal(0, "created existing dataset, error = %d", error); 1205 1206 /* 1207 * Verify that multiple dataset opens are allowed, but only when 1208 * the new access mode is compatible with the base mode. 1209 * We use a mixture of typed and typeless opens, and when the 1210 * open succeeds, verify that the discovered type is correct. 1211 */ 1212 for (mode = DS_MODE_STANDARD; mode < DS_MODE_LEVELS; mode++) { 1213 objset_t *os2; 1214 error = dmu_objset_open(name, DMU_OST_OTHER, mode, &os2); 1215 expected_error = (basemode + mode < DS_MODE_LEVELS) ? 0 : EBUSY; 1216 if (error != expected_error) 1217 fatal(0, "dmu_objset_open('%s') = %d, expected %d", 1218 name, error, expected_error); 1219 if (error == 0) 1220 dmu_objset_close(os2); 1221 } 1222 1223 zil_close(zilog); 1224 dmu_objset_close(os); 1225 1226 error = dmu_objset_destroy(name); 1227 if (error) 1228 fatal(0, "dmu_objset_destroy(%s) = %d", name, error); 1229 1230 (void) rw_unlock(&ztest_shared->zs_name_lock); 1231 } 1232 1233 /* 1234 * Verify that dmu_snapshot_{create,destroy,open,close} work as expected. 1235 */ 1236 void 1237 ztest_dmu_snapshot_create_destroy(ztest_args_t *za) 1238 { 1239 int error; 1240 objset_t *os = za->za_os; 1241 char snapname[100]; 1242 char osname[MAXNAMELEN]; 1243 1244 (void) rw_rdlock(&ztest_shared->zs_name_lock); 1245 dmu_objset_name(os, osname); 1246 (void) snprintf(snapname, 100, "%s@%llu", osname, 1247 (u_longlong_t)za->za_instance); 1248 1249 error = dmu_objset_destroy(snapname); 1250 if (error != 0 && error != ENOENT) 1251 fatal(0, "dmu_objset_destroy() = %d", error); 1252 error = dmu_objset_create(snapname, DMU_OST_OTHER, NULL, NULL, NULL); 1253 if (error == ENOSPC) 1254 ztest_record_enospc("dmu_take_snapshot"); 1255 else if (error != 0 && error != EEXIST) 1256 fatal(0, "dmu_take_snapshot() = %d", error); 1257 (void) rw_unlock(&ztest_shared->zs_name_lock); 1258 } 1259 1260 #define ZTEST_TRAVERSE_BLOCKS 1000 1261 1262 static int 1263 ztest_blk_cb(traverse_blk_cache_t *bc, spa_t *spa, void *arg) 1264 { 1265 ztest_args_t *za = arg; 1266 zbookmark_t *zb = &bc->bc_bookmark; 1267 blkptr_t *bp = &bc->bc_blkptr; 1268 dnode_phys_t *dnp = bc->bc_dnode; 1269 traverse_handle_t *th = za->za_th; 1270 uint64_t size = BP_GET_LSIZE(bp); 1271 1272 ASSERT(dnp != NULL); 1273 1274 if (bc->bc_errno) 1275 return (ERESTART); 1276 1277 /* 1278 * Once in a while, abort the traverse. We only do this to odd 1279 * instance numbers to ensure that even ones can run to completion. 1280 */ 1281 if ((za->za_instance & 1) && ztest_random(10000) == 0) 1282 return (EINTR); 1283 1284 if (bp->blk_birth == 0) { 1285 ASSERT(th->th_advance & ADVANCE_HOLES); 1286 return (0); 1287 } 1288 1289 if (zb->zb_level == 0 && !(th->th_advance & ADVANCE_DATA) && 1290 bc == &th->th_cache[ZB_DN_CACHE][0]) { 1291 ASSERT(bc->bc_data == NULL); 1292 return (0); 1293 } 1294 1295 ASSERT(bc->bc_data != NULL); 1296 1297 /* 1298 * This is an expensive question, so don't ask it too often. 1299 */ 1300 if (((za->za_random ^ th->th_callbacks) & 0xff) == 0) { 1301 void *xbuf = umem_alloc(size, UMEM_NOFAIL); 1302 if (arc_tryread(spa, bp, xbuf) == 0) { 1303 ASSERT(bcmp(bc->bc_data, xbuf, size) == 0); 1304 } 1305 umem_free(xbuf, size); 1306 } 1307 1308 if (zb->zb_level > 0) { 1309 ASSERT3U(size, ==, 1ULL << dnp->dn_indblkshift); 1310 return (0); 1311 } 1312 1313 if (zb->zb_level == -1) { 1314 ASSERT3U(size, ==, sizeof (objset_phys_t)); 1315 return (0); 1316 } 1317 1318 ASSERT(zb->zb_level == 0); 1319 ASSERT3U(size, ==, dnp->dn_datablkszsec << DEV_BSHIFT); 1320 1321 return (0); 1322 } 1323 1324 /* 1325 * Verify that live pool traversal works. 1326 */ 1327 void 1328 ztest_traverse(ztest_args_t *za) 1329 { 1330 spa_t *spa = dmu_objset_spa(za->za_os); 1331 traverse_handle_t *th = za->za_th; 1332 int rc, advance; 1333 uint64_t cbstart, cblimit; 1334 1335 if (th == NULL) { 1336 advance = 0; 1337 1338 if (ztest_random(2) == 0) 1339 advance |= ADVANCE_PRE; 1340 1341 if (ztest_random(2) == 0) 1342 advance |= ADVANCE_PRUNE; 1343 1344 if (ztest_random(2) == 0) 1345 advance |= ADVANCE_DATA; 1346 1347 if (ztest_random(2) == 0) 1348 advance |= ADVANCE_HOLES; 1349 1350 th = za->za_th = traverse_init(spa, ztest_blk_cb, za, advance, 1351 ZIO_FLAG_CANFAIL); 1352 1353 traverse_add_pool(th, 0, -1ULL); 1354 } 1355 1356 advance = th->th_advance; 1357 cbstart = th->th_callbacks; 1358 cblimit = cbstart + ((advance & ADVANCE_DATA) ? 100 : 1000); 1359 1360 while ((rc = traverse_more(th)) == EAGAIN && th->th_callbacks < cblimit) 1361 continue; 1362 1363 if (zopt_verbose >= 5) 1364 (void) printf("traverse %s%s%s%s %llu blocks to " 1365 "<%llu, %llu, %d, %llx>%s\n", 1366 (advance & ADVANCE_PRE) ? "pre" : "post", 1367 (advance & ADVANCE_PRUNE) ? "|prune" : "", 1368 (advance & ADVANCE_DATA) ? "|data" : "", 1369 (advance & ADVANCE_HOLES) ? "|holes" : "", 1370 (u_longlong_t)(th->th_callbacks - cbstart), 1371 (u_longlong_t)th->th_lastcb.zb_objset, 1372 (u_longlong_t)th->th_lastcb.zb_object, 1373 th->th_lastcb.zb_level, 1374 (u_longlong_t)th->th_lastcb.zb_blkid, 1375 rc == 0 ? " [done]" : 1376 rc == EINTR ? " [aborted]" : 1377 rc == EAGAIN ? "" : 1378 strerror(rc)); 1379 1380 if (rc != EAGAIN) { 1381 if (rc != 0 && rc != EINTR) 1382 fatal(0, "traverse_more(%p) = %d", th, rc); 1383 traverse_fini(th); 1384 za->za_th = NULL; 1385 } 1386 } 1387 1388 /* 1389 * Verify that dmu_object_{alloc,free} work as expected. 1390 */ 1391 void 1392 ztest_dmu_object_alloc_free(ztest_args_t *za) 1393 { 1394 objset_t *os = za->za_os; 1395 dmu_buf_t *db; 1396 dmu_tx_t *tx; 1397 uint64_t batchobj, object, batchsize, endoff, temp; 1398 int b, c, error, bonuslen; 1399 dmu_object_info_t doi; 1400 char osname[MAXNAMELEN]; 1401 1402 dmu_objset_name(os, osname); 1403 1404 endoff = -8ULL; 1405 batchsize = 2; 1406 1407 /* 1408 * Create a batch object if necessary, and record it in the directory. 1409 */ 1410 dmu_read(os, ZTEST_DIROBJ, za->za_diroff, sizeof (uint64_t), &batchobj); 1411 if (batchobj == 0) { 1412 tx = dmu_tx_create(os); 1413 dmu_tx_hold_write(tx, ZTEST_DIROBJ, za->za_diroff, 1414 sizeof (uint64_t)); 1415 dmu_tx_hold_bonus(tx, DMU_NEW_OBJECT); 1416 error = dmu_tx_assign(tx, TXG_WAIT); 1417 if (error) { 1418 ztest_record_enospc("create a batch object"); 1419 dmu_tx_abort(tx); 1420 return; 1421 } 1422 batchobj = dmu_object_alloc(os, DMU_OT_UINT64_OTHER, 0, 1423 DMU_OT_NONE, 0, tx); 1424 ztest_set_random_blocksize(os, batchobj, tx); 1425 dmu_write(os, ZTEST_DIROBJ, za->za_diroff, 1426 sizeof (uint64_t), &batchobj, tx); 1427 dmu_tx_commit(tx); 1428 } 1429 1430 /* 1431 * Destroy the previous batch of objects. 1432 */ 1433 for (b = 0; b < batchsize; b++) { 1434 dmu_read(os, batchobj, b * sizeof (uint64_t), 1435 sizeof (uint64_t), &object); 1436 if (object == 0) 1437 continue; 1438 /* 1439 * Read and validate contents. 1440 * We expect the nth byte of the bonus buffer to be n. 1441 */ 1442 db = dmu_bonus_hold(os, object); 1443 1444 dmu_object_info_from_db(db, &doi); 1445 ASSERT(doi.doi_type == DMU_OT_UINT64_OTHER); 1446 ASSERT(doi.doi_bonus_type == DMU_OT_PLAIN_OTHER); 1447 ASSERT3S(doi.doi_physical_blks, >=, 0); 1448 1449 dmu_buf_read(db); 1450 1451 bonuslen = db->db_size; 1452 1453 for (c = 0; c < bonuslen; c++) { 1454 if (((uint8_t *)db->db_data)[c] != 1455 (uint8_t)(c + bonuslen)) { 1456 fatal(0, 1457 "bad bonus: %s, obj %llu, off %d: %u != %u", 1458 osname, object, c, 1459 ((uint8_t *)db->db_data)[c], 1460 (uint8_t)(c + bonuslen)); 1461 } 1462 } 1463 1464 dmu_buf_rele(db); 1465 1466 /* 1467 * We expect the word at endoff to be our object number. 1468 */ 1469 dmu_read(os, object, endoff, sizeof (uint64_t), &temp); 1470 1471 if (temp != object) { 1472 fatal(0, "bad data in %s, got %llu, expected %llu", 1473 osname, temp, object); 1474 } 1475 1476 /* 1477 * Destroy old object and clear batch entry. 1478 */ 1479 tx = dmu_tx_create(os); 1480 dmu_tx_hold_write(tx, batchobj, 1481 b * sizeof (uint64_t), sizeof (uint64_t)); 1482 dmu_tx_hold_free(tx, object, 0, DMU_OBJECT_END); 1483 error = dmu_tx_assign(tx, TXG_WAIT); 1484 if (error) { 1485 ztest_record_enospc("free object"); 1486 dmu_tx_abort(tx); 1487 return; 1488 } 1489 error = dmu_object_free(os, object, tx); 1490 if (error) { 1491 fatal(0, "dmu_object_free('%s', %llu) = %d", 1492 osname, object, error); 1493 } 1494 object = 0; 1495 1496 dmu_object_set_checksum(os, batchobj, 1497 ztest_random_checksum(), tx); 1498 dmu_object_set_compress(os, batchobj, 1499 ztest_random_compress(), tx); 1500 1501 dmu_write(os, batchobj, b * sizeof (uint64_t), 1502 sizeof (uint64_t), &object, tx); 1503 1504 dmu_tx_commit(tx); 1505 } 1506 1507 /* 1508 * Before creating the new batch of objects, generate a bunch of churn. 1509 */ 1510 for (b = ztest_random(100); b > 0; b--) { 1511 tx = dmu_tx_create(os); 1512 dmu_tx_hold_bonus(tx, DMU_NEW_OBJECT); 1513 error = dmu_tx_assign(tx, TXG_WAIT); 1514 if (error) { 1515 ztest_record_enospc("churn objects"); 1516 dmu_tx_abort(tx); 1517 return; 1518 } 1519 object = dmu_object_alloc(os, DMU_OT_UINT64_OTHER, 0, 1520 DMU_OT_NONE, 0, tx); 1521 ztest_set_random_blocksize(os, object, tx); 1522 error = dmu_object_free(os, object, tx); 1523 if (error) { 1524 fatal(0, "dmu_object_free('%s', %llu) = %d", 1525 osname, object, error); 1526 } 1527 dmu_tx_commit(tx); 1528 } 1529 1530 /* 1531 * Create a new batch of objects with randomly chosen 1532 * blocksizes and record them in the batch directory. 1533 */ 1534 for (b = 0; b < batchsize; b++) { 1535 uint32_t va_blksize; 1536 u_longlong_t va_nblocks; 1537 1538 tx = dmu_tx_create(os); 1539 dmu_tx_hold_write(tx, batchobj, b * sizeof (uint64_t), 1540 sizeof (uint64_t)); 1541 dmu_tx_hold_bonus(tx, DMU_NEW_OBJECT); 1542 dmu_tx_hold_write(tx, DMU_NEW_OBJECT, endoff, 1543 sizeof (uint64_t)); 1544 error = dmu_tx_assign(tx, TXG_WAIT); 1545 if (error) { 1546 ztest_record_enospc("create batchobj"); 1547 dmu_tx_abort(tx); 1548 return; 1549 } 1550 bonuslen = (int)ztest_random(dmu_bonus_max()) + 1; 1551 1552 object = dmu_object_alloc(os, DMU_OT_UINT64_OTHER, 0, 1553 DMU_OT_PLAIN_OTHER, bonuslen, tx); 1554 1555 ztest_set_random_blocksize(os, object, tx); 1556 1557 dmu_object_set_checksum(os, object, 1558 ztest_random_checksum(), tx); 1559 dmu_object_set_compress(os, object, 1560 ztest_random_compress(), tx); 1561 1562 dmu_write(os, batchobj, b * sizeof (uint64_t), 1563 sizeof (uint64_t), &object, tx); 1564 1565 /* 1566 * Write to both the bonus buffer and the regular data. 1567 */ 1568 db = dmu_bonus_hold(os, object); 1569 ASSERT3U(bonuslen, ==, db->db_size); 1570 1571 dmu_object_size_from_db(db, &va_blksize, &va_nblocks); 1572 ASSERT3S(va_nblocks, >=, 0); 1573 1574 dmu_buf_will_dirty(db, tx); 1575 1576 /* 1577 * See comments above regarding the contents of 1578 * the bonus buffer and the word at endoff. 1579 */ 1580 for (c = 0; c < db->db_size; c++) 1581 ((uint8_t *)db->db_data)[c] = (uint8_t)(c + bonuslen); 1582 1583 dmu_buf_rele(db); 1584 1585 /* 1586 * Write to a large offset to increase indirection. 1587 */ 1588 dmu_write(os, object, endoff, sizeof (uint64_t), &object, tx); 1589 1590 dmu_tx_commit(tx); 1591 } 1592 } 1593 1594 /* 1595 * Verify that dmu_{read,write} work as expected. 1596 */ 1597 typedef struct bufwad { 1598 uint64_t bw_index; 1599 uint64_t bw_txg; 1600 uint64_t bw_data; 1601 } bufwad_t; 1602 1603 typedef struct dmu_read_write_dir { 1604 uint64_t dd_packobj; 1605 uint64_t dd_bigobj; 1606 uint64_t dd_chunk; 1607 } dmu_read_write_dir_t; 1608 1609 void 1610 ztest_dmu_read_write(ztest_args_t *za) 1611 { 1612 objset_t *os = za->za_os; 1613 dmu_read_write_dir_t dd; 1614 dmu_tx_t *tx; 1615 int i, freeit, error; 1616 uint64_t n, s, txg; 1617 bufwad_t *packbuf, *bigbuf, *pack, *bigH, *bigT; 1618 uint64_t packoff, packsize, bigoff, bigsize; 1619 uint64_t regions = 997; 1620 uint64_t stride = 123456789ULL; 1621 uint64_t width = 40; 1622 int free_percent = 5; 1623 1624 /* 1625 * This test uses two objects, packobj and bigobj, that are always 1626 * updated together (i.e. in the same tx) so that their contents are 1627 * in sync and can be compared. Their contents relate to each other 1628 * in a simple way: packobj is a dense array of 'bufwad' structures, 1629 * while bigobj is a sparse array of the same bufwads. Specifically, 1630 * for any index n, there are three bufwads that should be identical: 1631 * 1632 * packobj, at offset n * sizeof (bufwad_t) 1633 * bigobj, at the head of the nth chunk 1634 * bigobj, at the tail of the nth chunk 1635 * 1636 * The chunk size is arbitrary. It doesn't have to be a power of two, 1637 * and it doesn't have any relation to the object blocksize. 1638 * The only requirement is that it can hold at least two bufwads. 1639 * 1640 * Normally, we write the bufwad to each of these locations. 1641 * However, free_percent of the time we instead write zeroes to 1642 * packobj and perform a dmu_free_range() on bigobj. By comparing 1643 * bigobj to packobj, we can verify that the DMU is correctly 1644 * tracking which parts of an object are allocated and free, 1645 * and that the contents of the allocated blocks are correct. 1646 */ 1647 1648 /* 1649 * Read the directory info. If it's the first time, set things up. 1650 */ 1651 dmu_read(os, ZTEST_DIROBJ, za->za_diroff, sizeof (dd), &dd); 1652 if (dd.dd_chunk == 0) { 1653 ASSERT(dd.dd_packobj == 0); 1654 ASSERT(dd.dd_bigobj == 0); 1655 tx = dmu_tx_create(os); 1656 dmu_tx_hold_write(tx, ZTEST_DIROBJ, za->za_diroff, sizeof (dd)); 1657 dmu_tx_hold_bonus(tx, DMU_NEW_OBJECT); 1658 error = dmu_tx_assign(tx, TXG_WAIT); 1659 if (error) { 1660 ztest_record_enospc("create r/w directory"); 1661 dmu_tx_abort(tx); 1662 return; 1663 } 1664 1665 dd.dd_packobj = dmu_object_alloc(os, DMU_OT_UINT64_OTHER, 0, 1666 DMU_OT_NONE, 0, tx); 1667 dd.dd_bigobj = dmu_object_alloc(os, DMU_OT_UINT64_OTHER, 0, 1668 DMU_OT_NONE, 0, tx); 1669 dd.dd_chunk = (1000 + ztest_random(1000)) * sizeof (uint64_t); 1670 1671 ztest_set_random_blocksize(os, dd.dd_packobj, tx); 1672 ztest_set_random_blocksize(os, dd.dd_bigobj, tx); 1673 1674 dmu_write(os, ZTEST_DIROBJ, za->za_diroff, sizeof (dd), &dd, 1675 tx); 1676 dmu_tx_commit(tx); 1677 } 1678 1679 /* 1680 * Prefetch a random chunk of the big object. 1681 * Our aim here is to get some async reads in flight 1682 * for blocks that we may free below; the DMU should 1683 * handle this race correctly. 1684 */ 1685 n = ztest_random(regions) * stride + ztest_random(width); 1686 s = 1 + ztest_random(2 * width - 1); 1687 dmu_prefetch(os, dd.dd_bigobj, n * dd.dd_chunk, s * dd.dd_chunk); 1688 1689 /* 1690 * Pick a random index and compute the offsets into packobj and bigobj. 1691 */ 1692 n = ztest_random(regions) * stride + ztest_random(width); 1693 s = 1 + ztest_random(width - 1); 1694 1695 packoff = n * sizeof (bufwad_t); 1696 packsize = s * sizeof (bufwad_t); 1697 1698 bigoff = n * dd.dd_chunk; 1699 bigsize = s * dd.dd_chunk; 1700 1701 packbuf = umem_alloc(packsize, UMEM_NOFAIL); 1702 bigbuf = umem_alloc(bigsize, UMEM_NOFAIL); 1703 1704 /* 1705 * free_percent of the time, free a range of bigobj rather than 1706 * overwriting it. 1707 */ 1708 freeit = (ztest_random(100) < free_percent); 1709 1710 /* 1711 * Read the current contents of our objects. 1712 */ 1713 dmu_read(os, dd.dd_packobj, packoff, packsize, packbuf); 1714 dmu_read(os, dd.dd_bigobj, bigoff, bigsize, bigbuf); 1715 1716 /* 1717 * Get a tx for the mods to both packobj and bigobj. 1718 */ 1719 tx = dmu_tx_create(os); 1720 1721 dmu_tx_hold_write(tx, dd.dd_packobj, packoff, packsize); 1722 1723 if (freeit) 1724 dmu_tx_hold_free(tx, dd.dd_bigobj, bigoff, bigsize); 1725 else 1726 dmu_tx_hold_write(tx, dd.dd_bigobj, bigoff, bigsize); 1727 1728 error = dmu_tx_assign(tx, TXG_WAIT); 1729 1730 if (error) { 1731 ztest_record_enospc("dmu r/w range"); 1732 dmu_tx_abort(tx); 1733 umem_free(packbuf, packsize); 1734 umem_free(bigbuf, bigsize); 1735 return; 1736 } 1737 1738 txg = dmu_tx_get_txg(tx); 1739 1740 /* 1741 * For each index from n to n + s, verify that the existing bufwad 1742 * in packobj matches the bufwads at the head and tail of the 1743 * corresponding chunk in bigobj. Then update all three bufwads 1744 * with the new values we want to write out. 1745 */ 1746 for (i = 0; i < s; i++) { 1747 /* LINTED */ 1748 pack = (bufwad_t *)((char *)packbuf + i * sizeof (bufwad_t)); 1749 /* LINTED */ 1750 bigH = (bufwad_t *)((char *)bigbuf + i * dd.dd_chunk); 1751 /* LINTED */ 1752 bigT = (bufwad_t *)((char *)bigH + dd.dd_chunk) - 1; 1753 1754 ASSERT((uintptr_t)bigH - (uintptr_t)bigbuf < bigsize); 1755 ASSERT((uintptr_t)bigT - (uintptr_t)bigbuf < bigsize); 1756 1757 if (pack->bw_txg > txg) 1758 fatal(0, "future leak: got %llx, open txg is %llx", 1759 pack->bw_txg, txg); 1760 1761 if (pack->bw_data != 0 && pack->bw_index != n + i) 1762 fatal(0, "wrong index: got %llx, wanted %llx+%llx", 1763 pack->bw_index, n, i); 1764 1765 if (bcmp(pack, bigH, sizeof (bufwad_t)) != 0) 1766 fatal(0, "pack/bigH mismatch in %p/%p", pack, bigH); 1767 1768 if (bcmp(pack, bigT, sizeof (bufwad_t)) != 0) 1769 fatal(0, "pack/bigT mismatch in %p/%p", pack, bigT); 1770 1771 if (freeit) { 1772 bzero(pack, sizeof (bufwad_t)); 1773 } else { 1774 pack->bw_index = n + i; 1775 pack->bw_txg = txg; 1776 pack->bw_data = 1 + ztest_random(-2ULL); 1777 } 1778 *bigH = *pack; 1779 *bigT = *pack; 1780 } 1781 1782 /* 1783 * We've verified all the old bufwads, and made new ones. 1784 * Now write them out. 1785 */ 1786 dmu_write(os, dd.dd_packobj, packoff, packsize, packbuf, tx); 1787 1788 if (freeit) { 1789 if (zopt_verbose >= 6) { 1790 (void) printf("freeing offset %llx size %llx" 1791 " txg %llx\n", 1792 (u_longlong_t)bigoff, 1793 (u_longlong_t)bigsize, 1794 (u_longlong_t)txg); 1795 } 1796 dmu_free_range(os, dd.dd_bigobj, bigoff, bigsize, tx); 1797 } else { 1798 if (zopt_verbose >= 6) { 1799 (void) printf("writing offset %llx size %llx" 1800 " txg %llx\n", 1801 (u_longlong_t)bigoff, 1802 (u_longlong_t)bigsize, 1803 (u_longlong_t)txg); 1804 } 1805 dmu_write(os, dd.dd_bigobj, bigoff, bigsize, bigbuf, tx); 1806 } 1807 1808 dmu_tx_commit(tx); 1809 1810 /* 1811 * Sanity check the stuff we just wrote. 1812 */ 1813 { 1814 void *packcheck = umem_alloc(packsize, UMEM_NOFAIL); 1815 void *bigcheck = umem_alloc(bigsize, UMEM_NOFAIL); 1816 1817 dmu_read(os, dd.dd_packobj, packoff, packsize, packcheck); 1818 dmu_read(os, dd.dd_bigobj, bigoff, bigsize, bigcheck); 1819 1820 ASSERT(bcmp(packbuf, packcheck, packsize) == 0); 1821 ASSERT(bcmp(bigbuf, bigcheck, bigsize) == 0); 1822 1823 umem_free(packcheck, packsize); 1824 umem_free(bigcheck, bigsize); 1825 } 1826 1827 umem_free(packbuf, packsize); 1828 umem_free(bigbuf, bigsize); 1829 } 1830 1831 void 1832 ztest_dmu_write_parallel(ztest_args_t *za) 1833 { 1834 objset_t *os = za->za_os; 1835 dmu_tx_t *tx; 1836 dmu_buf_t *db; 1837 int i, b, error, do_free, bs; 1838 uint64_t off, txg_how, txg; 1839 mutex_t *lp; 1840 char osname[MAXNAMELEN]; 1841 char iobuf[SPA_MAXBLOCKSIZE]; 1842 ztest_block_tag_t rbt, wbt; 1843 1844 dmu_objset_name(os, osname); 1845 bs = ZTEST_DIROBJ_BLOCKSIZE; 1846 1847 /* 1848 * Have multiple threads write to large offsets in ZTEST_DIROBJ 1849 * to verify that having multiple threads writing to the same object 1850 * in parallel doesn't cause any trouble. 1851 * Also do parallel writes to the bonus buffer on occasion. 1852 */ 1853 for (i = 0; i < 50; i++) { 1854 b = ztest_random(ZTEST_SYNC_LOCKS); 1855 lp = &ztest_shared->zs_sync_lock[b]; 1856 1857 do_free = (ztest_random(4) == 0); 1858 1859 off = za->za_diroff_shared + ((uint64_t)b << SPA_MAXBLOCKSHIFT); 1860 1861 if (ztest_random(4) == 0) { 1862 /* 1863 * Do the bonus buffer instead of a regular block. 1864 */ 1865 do_free = 0; 1866 off = -1ULL; 1867 } 1868 1869 tx = dmu_tx_create(os); 1870 1871 if (off == -1ULL) 1872 dmu_tx_hold_bonus(tx, ZTEST_DIROBJ); 1873 else if (do_free) 1874 dmu_tx_hold_free(tx, ZTEST_DIROBJ, off, bs); 1875 else 1876 dmu_tx_hold_write(tx, ZTEST_DIROBJ, off, bs); 1877 1878 txg_how = ztest_random(2) == 0 ? TXG_WAIT : TXG_NOWAIT; 1879 error = dmu_tx_assign(tx, txg_how); 1880 if (error) { 1881 dmu_tx_abort(tx); 1882 if (error == ERESTART) { 1883 ASSERT(txg_how == TXG_NOWAIT); 1884 txg_wait_open(dmu_objset_pool(os), 0); 1885 continue; 1886 } 1887 ztest_record_enospc("dmu write parallel"); 1888 return; 1889 } 1890 txg = dmu_tx_get_txg(tx); 1891 1892 if (do_free) { 1893 (void) mutex_lock(lp); 1894 dmu_free_range(os, ZTEST_DIROBJ, off, bs, tx); 1895 (void) mutex_unlock(lp); 1896 dmu_tx_commit(tx); 1897 continue; 1898 } 1899 1900 wbt.bt_objset = dmu_objset_id(os); 1901 wbt.bt_object = ZTEST_DIROBJ; 1902 wbt.bt_offset = off; 1903 wbt.bt_txg = txg; 1904 wbt.bt_thread = za->za_instance; 1905 1906 if (off == -1ULL) { 1907 wbt.bt_seq = 0; 1908 db = dmu_bonus_hold(os, ZTEST_DIROBJ); 1909 ASSERT3U(db->db_size, ==, sizeof (wbt)); 1910 dmu_buf_read(db); 1911 bcopy(db->db_data, &rbt, db->db_size); 1912 if (rbt.bt_objset != 0) { 1913 ASSERT3U(rbt.bt_objset, ==, wbt.bt_objset); 1914 ASSERT3U(rbt.bt_object, ==, wbt.bt_object); 1915 ASSERT3U(rbt.bt_offset, ==, wbt.bt_offset); 1916 ASSERT3U(rbt.bt_txg, <=, wbt.bt_txg); 1917 } 1918 dmu_buf_will_dirty(db, tx); 1919 bcopy(&wbt, db->db_data, db->db_size); 1920 dmu_buf_rele(db); 1921 dmu_tx_commit(tx); 1922 continue; 1923 } 1924 1925 (void) mutex_lock(lp); 1926 1927 wbt.bt_seq = ztest_shared->zs_seq[b]++; 1928 1929 dmu_write(os, ZTEST_DIROBJ, off, sizeof (wbt), &wbt, tx); 1930 1931 (void) mutex_unlock(lp); 1932 1933 if (ztest_random(100) == 0) 1934 (void) poll(NULL, 0, 1); /* open dn_notxholds window */ 1935 1936 dmu_tx_commit(tx); 1937 1938 if (ztest_random(1000) == 0) 1939 txg_wait_synced(dmu_objset_pool(os), txg); 1940 1941 if (ztest_random(2) == 0) { 1942 blkptr_t blk = { 0 }; 1943 uint64_t blkoff; 1944 1945 txg_suspend(dmu_objset_pool(os)); 1946 (void) mutex_lock(lp); 1947 error = dmu_sync(os, ZTEST_DIROBJ, off, &blkoff, &blk, 1948 txg); 1949 (void) mutex_unlock(lp); 1950 if (error) { 1951 txg_resume(dmu_objset_pool(os)); 1952 dprintf("dmu_sync(%s, %d, %llx) = %d\n", 1953 osname, ZTEST_DIROBJ, off, error); 1954 continue; 1955 } 1956 1957 if (blk.blk_birth == 0) { /* concurrent free */ 1958 txg_resume(dmu_objset_pool(os)); 1959 continue; 1960 } 1961 1962 ASSERT(blk.blk_fill == 1); 1963 ASSERT3U(BP_GET_TYPE(&blk), ==, DMU_OT_UINT64_OTHER); 1964 ASSERT3U(BP_GET_LEVEL(&blk), ==, 0); 1965 ASSERT3U(BP_GET_LSIZE(&blk), ==, bs); 1966 1967 /* 1968 * Read the block that dmu_sync() returned to 1969 * make sure its contents match what we wrote. 1970 * We do this while still txg_suspend()ed to ensure 1971 * that the block can't be reused before we read it. 1972 */ 1973 error = zio_wait(zio_read(NULL, dmu_objset_spa(os), 1974 &blk, iobuf, bs, NULL, NULL, 1975 ZIO_PRIORITY_SYNC_READ, ZIO_FLAG_MUSTSUCCEED)); 1976 ASSERT(error == 0); 1977 1978 txg_resume(dmu_objset_pool(os)); 1979 1980 bcopy(&iobuf[blkoff], &rbt, sizeof (rbt)); 1981 1982 ASSERT3U(rbt.bt_objset, ==, wbt.bt_objset); 1983 ASSERT3U(rbt.bt_object, ==, wbt.bt_object); 1984 ASSERT3U(rbt.bt_offset, ==, wbt.bt_offset); 1985 1986 /* 1987 * The semantic of dmu_sync() is that we always 1988 * push the most recent version of the data, 1989 * so in the face of concurrent updates we may 1990 * see a newer version of the block. That's OK. 1991 */ 1992 ASSERT3U(rbt.bt_txg, >=, wbt.bt_txg); 1993 if (rbt.bt_thread == wbt.bt_thread) 1994 ASSERT3U(rbt.bt_seq, ==, wbt.bt_seq); 1995 else 1996 ASSERT3U(rbt.bt_seq, >, wbt.bt_seq); 1997 } 1998 } 1999 } 2000 2001 /* 2002 * Verify that zap_{create,destroy,add,remove,update} work as expected. 2003 */ 2004 #define ZTEST_ZAP_MIN_INTS 1 2005 #define ZTEST_ZAP_MAX_INTS 4 2006 #define ZTEST_ZAP_MAX_PROPS 1000 2007 2008 void 2009 ztest_zap(ztest_args_t *za) 2010 { 2011 objset_t *os = za->za_os; 2012 uint64_t object; 2013 uint64_t txg, last_txg; 2014 uint64_t value[ZTEST_ZAP_MAX_INTS]; 2015 uint64_t zl_ints, zl_intsize, prop; 2016 int i, ints; 2017 int iters = 100; 2018 dmu_tx_t *tx; 2019 char propname[100], txgname[100]; 2020 int error; 2021 char osname[MAXNAMELEN]; 2022 char *hc[2] = { "s.acl.h", ".s.open.h.hyLZlg" }; 2023 2024 dmu_objset_name(os, osname); 2025 2026 /* 2027 * Create a new object if necessary, and record it in the directory. 2028 */ 2029 dmu_read(os, ZTEST_DIROBJ, za->za_diroff, sizeof (uint64_t), &object); 2030 2031 if (object == 0) { 2032 tx = dmu_tx_create(os); 2033 dmu_tx_hold_write(tx, ZTEST_DIROBJ, za->za_diroff, 2034 sizeof (uint64_t)); 2035 dmu_tx_hold_zap(tx, DMU_NEW_OBJECT, 2); 2036 error = dmu_tx_assign(tx, TXG_WAIT); 2037 if (error) { 2038 ztest_record_enospc("create zap test obj"); 2039 dmu_tx_abort(tx); 2040 return; 2041 } 2042 object = zap_create(os, DMU_OT_ZAP_OTHER, DMU_OT_NONE, 0, tx); 2043 if (error) { 2044 fatal(0, "zap_create('%s', %llu) = %d", 2045 osname, object, error); 2046 } 2047 ASSERT(object != 0); 2048 dmu_write(os, ZTEST_DIROBJ, za->za_diroff, 2049 sizeof (uint64_t), &object, tx); 2050 /* 2051 * Generate a known hash collision, and verify that 2052 * we can lookup and remove both entries. 2053 */ 2054 for (i = 0; i < 2; i++) { 2055 value[i] = i; 2056 error = zap_add(os, object, hc[i], sizeof (uint64_t), 2057 1, &value[i], tx); 2058 ASSERT3U(error, ==, 0); 2059 } 2060 for (i = 0; i < 2; i++) { 2061 error = zap_add(os, object, hc[i], sizeof (uint64_t), 2062 1, &value[i], tx); 2063 ASSERT3U(error, ==, EEXIST); 2064 error = zap_length(os, object, hc[i], 2065 &zl_intsize, &zl_ints); 2066 ASSERT3U(error, ==, 0); 2067 ASSERT3U(zl_intsize, ==, sizeof (uint64_t)); 2068 ASSERT3U(zl_ints, ==, 1); 2069 } 2070 for (i = 0; i < 2; i++) { 2071 error = zap_remove(os, object, hc[i], tx); 2072 ASSERT3U(error, ==, 0); 2073 } 2074 2075 dmu_tx_commit(tx); 2076 } 2077 2078 ints = MAX(ZTEST_ZAP_MIN_INTS, object % ZTEST_ZAP_MAX_INTS); 2079 2080 while (--iters >= 0) { 2081 prop = ztest_random(ZTEST_ZAP_MAX_PROPS); 2082 (void) sprintf(propname, "prop_%llu", (u_longlong_t)prop); 2083 (void) sprintf(txgname, "txg_%llu", (u_longlong_t)prop); 2084 bzero(value, sizeof (value)); 2085 last_txg = 0; 2086 2087 /* 2088 * If these zap entries already exist, validate their contents. 2089 */ 2090 error = zap_length(os, object, txgname, &zl_intsize, &zl_ints); 2091 if (error == 0) { 2092 ASSERT3U(zl_intsize, ==, sizeof (uint64_t)); 2093 ASSERT3U(zl_ints, ==, 1); 2094 2095 error = zap_lookup(os, object, txgname, zl_intsize, 2096 zl_ints, &last_txg); 2097 2098 ASSERT3U(error, ==, 0); 2099 2100 error = zap_length(os, object, propname, &zl_intsize, 2101 &zl_ints); 2102 2103 ASSERT3U(error, ==, 0); 2104 ASSERT3U(zl_intsize, ==, sizeof (uint64_t)); 2105 ASSERT3U(zl_ints, ==, ints); 2106 2107 error = zap_lookup(os, object, propname, zl_intsize, 2108 zl_ints, value); 2109 2110 ASSERT3U(error, ==, 0); 2111 2112 for (i = 0; i < ints; i++) { 2113 ASSERT3U(value[i], ==, last_txg + object + i); 2114 } 2115 } else { 2116 ASSERT3U(error, ==, ENOENT); 2117 } 2118 2119 /* 2120 * Atomically update two entries in our zap object. 2121 * The first is named txg_%llu, and contains the txg 2122 * in which the property was last updated. The second 2123 * is named prop_%llu, and the nth element of its value 2124 * should be txg + object + n. 2125 */ 2126 tx = dmu_tx_create(os); 2127 dmu_tx_hold_zap(tx, object, 2); 2128 error = dmu_tx_assign(tx, TXG_WAIT); 2129 if (error) { 2130 ztest_record_enospc("create zap entry"); 2131 dmu_tx_abort(tx); 2132 return; 2133 } 2134 txg = dmu_tx_get_txg(tx); 2135 2136 if (last_txg > txg) 2137 fatal(0, "zap future leak: old %llu new %llu", 2138 last_txg, txg); 2139 2140 for (i = 0; i < ints; i++) 2141 value[i] = txg + object + i; 2142 2143 error = zap_update(os, object, txgname, sizeof (uint64_t), 2144 1, &txg, tx); 2145 if (error) 2146 fatal(0, "zap_update('%s', %llu, '%s') = %d", 2147 osname, object, txgname, error); 2148 2149 error = zap_update(os, object, propname, sizeof (uint64_t), 2150 ints, value, tx); 2151 if (error) 2152 fatal(0, "zap_update('%s', %llu, '%s') = %d", 2153 osname, object, propname, error); 2154 2155 dmu_tx_commit(tx); 2156 2157 /* 2158 * Remove a random pair of entries. 2159 */ 2160 prop = ztest_random(ZTEST_ZAP_MAX_PROPS); 2161 (void) sprintf(propname, "prop_%llu", (u_longlong_t)prop); 2162 (void) sprintf(txgname, "txg_%llu", (u_longlong_t)prop); 2163 2164 error = zap_length(os, object, txgname, &zl_intsize, &zl_ints); 2165 2166 if (error == ENOENT) 2167 continue; 2168 2169 ASSERT3U(error, ==, 0); 2170 2171 tx = dmu_tx_create(os); 2172 dmu_tx_hold_zap(tx, object, 2); 2173 error = dmu_tx_assign(tx, TXG_WAIT); 2174 if (error) { 2175 ztest_record_enospc("remove zap entry"); 2176 dmu_tx_abort(tx); 2177 return; 2178 } 2179 error = zap_remove(os, object, txgname, tx); 2180 if (error) 2181 fatal(0, "zap_remove('%s', %llu, '%s') = %d", 2182 osname, object, txgname, error); 2183 2184 error = zap_remove(os, object, propname, tx); 2185 if (error) 2186 fatal(0, "zap_remove('%s', %llu, '%s') = %d", 2187 osname, object, propname, error); 2188 2189 dmu_tx_commit(tx); 2190 } 2191 2192 /* 2193 * Once in a while, destroy the object. 2194 */ 2195 if (ztest_random(100) != 0) 2196 return; 2197 2198 tx = dmu_tx_create(os); 2199 dmu_tx_hold_write(tx, ZTEST_DIROBJ, za->za_diroff, sizeof (uint64_t)); 2200 dmu_tx_hold_free(tx, object, 0, DMU_OBJECT_END); 2201 error = dmu_tx_assign(tx, TXG_WAIT); 2202 if (error) { 2203 ztest_record_enospc("destroy zap object"); 2204 dmu_tx_abort(tx); 2205 return; 2206 } 2207 error = zap_destroy(os, object, tx); 2208 if (error) 2209 fatal(0, "zap_destroy('%s', %llu) = %d", 2210 osname, object, error); 2211 object = 0; 2212 dmu_write(os, ZTEST_DIROBJ, za->za_diroff, sizeof (uint64_t), 2213 &object, tx); 2214 dmu_tx_commit(tx); 2215 } 2216 2217 void 2218 ztest_zap_parallel(ztest_args_t *za) 2219 { 2220 objset_t *os = za->za_os; 2221 uint64_t txg, object, count, wsize, wc, zl_wsize, zl_wc; 2222 int iters = 100; 2223 dmu_tx_t *tx; 2224 int i, namelen, error; 2225 char name[20], string_value[20]; 2226 void *data; 2227 2228 while (--iters >= 0) { 2229 /* 2230 * Generate a random name of the form 'xxx.....' where each 2231 * x is a random printable character and the dots are dots. 2232 * There are 94 such characters, and the name length goes from 2233 * 6 to 20, so there are 94^3 * 15 = 12,458,760 possible names. 2234 */ 2235 namelen = ztest_random(sizeof (name) - 5) + 5 + 1; 2236 2237 for (i = 0; i < 3; i++) 2238 name[i] = '!' + ztest_random('~' - '!' + 1); 2239 for (; i < namelen - 1; i++) 2240 name[i] = '.'; 2241 name[i] = '\0'; 2242 2243 if (ztest_random(2) == 0) 2244 object = ZTEST_MICROZAP_OBJ; 2245 else 2246 object = ZTEST_FATZAP_OBJ; 2247 2248 if ((namelen & 1) || object == ZTEST_MICROZAP_OBJ) { 2249 wsize = sizeof (txg); 2250 wc = 1; 2251 data = &txg; 2252 } else { 2253 wsize = 1; 2254 wc = namelen; 2255 data = string_value; 2256 } 2257 2258 count = -1ULL; 2259 VERIFY(zap_count(os, object, &count) == 0); 2260 ASSERT(count != -1ULL); 2261 2262 /* 2263 * Select an operation: length, lookup, add, update, remove. 2264 */ 2265 i = ztest_random(5); 2266 2267 if (i >= 2) { 2268 tx = dmu_tx_create(os); 2269 dmu_tx_hold_zap(tx, object, 1); 2270 error = dmu_tx_assign(tx, TXG_WAIT); 2271 if (error) { 2272 ztest_record_enospc("zap parallel"); 2273 dmu_tx_abort(tx); 2274 return; 2275 } 2276 txg = dmu_tx_get_txg(tx); 2277 bcopy(name, string_value, namelen); 2278 } else { 2279 tx = NULL; 2280 txg = 0; 2281 bzero(string_value, namelen); 2282 } 2283 2284 switch (i) { 2285 2286 case 0: 2287 error = zap_length(os, object, name, &zl_wsize, &zl_wc); 2288 if (error == 0) { 2289 ASSERT3U(wsize, ==, zl_wsize); 2290 ASSERT3U(wc, ==, zl_wc); 2291 } else { 2292 ASSERT3U(error, ==, ENOENT); 2293 } 2294 break; 2295 2296 case 1: 2297 error = zap_lookup(os, object, name, wsize, wc, data); 2298 if (error == 0) { 2299 if (data == string_value && 2300 bcmp(name, data, namelen) != 0) 2301 fatal(0, "name '%s' != val '%s' len %d", 2302 name, data, namelen); 2303 } else { 2304 ASSERT3U(error, ==, ENOENT); 2305 } 2306 break; 2307 2308 case 2: 2309 error = zap_add(os, object, name, wsize, wc, data, tx); 2310 ASSERT(error == 0 || error == EEXIST); 2311 break; 2312 2313 case 3: 2314 VERIFY(zap_update(os, object, name, wsize, wc, 2315 data, tx) == 0); 2316 break; 2317 2318 case 4: 2319 error = zap_remove(os, object, name, tx); 2320 ASSERT(error == 0 || error == ENOENT); 2321 break; 2322 } 2323 2324 if (tx != NULL) 2325 dmu_tx_commit(tx); 2326 } 2327 } 2328 2329 void 2330 ztest_dsl_prop_get_set(ztest_args_t *za) 2331 { 2332 objset_t *os = za->za_os; 2333 int i, inherit; 2334 uint64_t value; 2335 const char *prop, *valname; 2336 char setpoint[MAXPATHLEN]; 2337 char osname[MAXNAMELEN]; 2338 2339 (void) rw_rdlock(&ztest_shared->zs_name_lock); 2340 2341 dmu_objset_name(os, osname); 2342 2343 for (i = 0; i < 2; i++) { 2344 if (i == 0) { 2345 prop = "checksum"; 2346 value = ztest_random_checksum(); 2347 inherit = (value == ZIO_CHECKSUM_INHERIT); 2348 } else { 2349 prop = "compression"; 2350 value = ztest_random_compress(); 2351 inherit = (value == ZIO_COMPRESS_INHERIT); 2352 } 2353 2354 VERIFY3U(dsl_prop_set(osname, prop, sizeof (value), 2355 !inherit, &value), ==, 0); 2356 2357 VERIFY3U(dsl_prop_get(osname, prop, sizeof (value), 2358 1, &value, setpoint), ==, 0); 2359 2360 if (i == 0) 2361 valname = zio_checksum_table[value].ci_name; 2362 else 2363 valname = zio_compress_table[value].ci_name; 2364 2365 if (zopt_verbose >= 6) { 2366 (void) printf("%s %s = %s for '%s'\n", 2367 osname, prop, valname, setpoint); 2368 } 2369 } 2370 2371 (void) rw_unlock(&ztest_shared->zs_name_lock); 2372 } 2373 2374 /* 2375 * Inject random faults into the on-disk data. 2376 */ 2377 void 2378 ztest_fault_inject(ztest_args_t *za) 2379 { 2380 int fd; 2381 uint64_t offset; 2382 uint64_t leaves = MAX(zopt_mirrors, 1) * zopt_raidz; 2383 uint64_t bad = 0x1990c0ffeedecade; 2384 uint64_t top, leaf; 2385 char path0[MAXPATHLEN]; 2386 char path1[MAXPATHLEN]; 2387 char pathrand[MAXPATHLEN]; 2388 size_t fsize; 2389 spa_t *spa = dmu_objset_spa(za->za_os); 2390 int bshift = SPA_MAXBLOCKSHIFT + 2; /* don't scrog all labels */ 2391 int iters = 1000; 2392 int ftype; 2393 2394 /* 2395 * Pick a random top-level vdev. 2396 */ 2397 spa_config_enter(spa, RW_READER); 2398 top = ztest_random(spa->spa_root_vdev->vdev_children); 2399 spa_config_exit(spa); 2400 2401 /* 2402 * Pick a random leaf. 2403 */ 2404 leaf = ztest_random(leaves); 2405 2406 /* 2407 * Generate paths to the first to leaves in this top-level vdev, 2408 * and to the random leaf we selected. We'll induce transient 2409 * faults on leaves 0 and 1, we'll online/offline leaf 1, 2410 * and we'll write random garbage to the randomly chosen leaf. 2411 */ 2412 (void) snprintf(path0, sizeof (path0), 2413 ztest_dev_template, zopt_dir, zopt_pool, top * leaves + 0); 2414 (void) snprintf(path1, sizeof (path1), 2415 ztest_dev_template, zopt_dir, zopt_pool, top * leaves + 1); 2416 (void) snprintf(pathrand, sizeof (pathrand), 2417 ztest_dev_template, zopt_dir, zopt_pool, top * leaves + leaf); 2418 2419 if (leaves < 2) /* there is no second leaf */ 2420 path1[0] = '\0'; 2421 2422 dprintf("damaging %s, %s, and %s\n", path0, path1, pathrand); 2423 2424 /* 2425 * If we have exactly one-fault tolerance, just randomly offline 2426 * and online one device. 2427 */ 2428 if (zopt_maxfaults == 1 && path1[0] != '\0') { 2429 if (ztest_random(10) < 6) 2430 (void) vdev_offline(spa, path1); 2431 else 2432 (void) vdev_online(spa, path1); 2433 return; 2434 } 2435 2436 /* 2437 * Always inject a little random device failure, regardless of 2438 * the replication level. The I/Os should be retried successfully. 2439 * If we only have single-fault tolerance, don't inject write 2440 * faults, because then we'll be doing partial writes and won't 2441 * be able to recover when we inject data corruption. 2442 */ 2443 if (zopt_maxfaults <= 1) 2444 ftype = (1U << ZIO_TYPE_READ); 2445 else 2446 ftype = (1U << ZIO_TYPE_READ) | (1U << ZIO_TYPE_WRITE); 2447 2448 (void) vdev_error_setup(spa, path0, VDEV_FAULT_COUNT, ftype, 10); 2449 2450 /* 2451 * If we can tolerate three or more faults, make one of the 2452 * devices fail quite a lot. 2453 */ 2454 if (zopt_maxfaults >= 3 && path1[0] != '\0') 2455 (void) vdev_error_setup(spa, path1, VDEV_FAULT_COUNT, 2456 ftype, 100); 2457 2458 /* 2459 * If we can tolerate four or more faults, offline one of the devices. 2460 */ 2461 if (zopt_maxfaults >= 4 && path1[0] != '\0') { 2462 if (ztest_random(10) < 6) 2463 (void) vdev_offline(spa, path1); 2464 else 2465 (void) vdev_online(spa, path1); 2466 } 2467 2468 /* 2469 * If we have at least single-fault tolerance, inject data corruption. 2470 */ 2471 if (zopt_maxfaults < 1) 2472 return; 2473 2474 fd = open(pathrand, O_RDWR); 2475 2476 if (fd == -1) /* we hit a gap in the device namespace */ 2477 return; 2478 2479 fsize = lseek(fd, 0, SEEK_END); 2480 2481 while (--iters != 0) { 2482 offset = ztest_random(fsize / (leaves << bshift)) * 2483 (leaves << bshift) + (leaf << bshift) + 2484 (ztest_random(1ULL << (bshift - 1)) & -8ULL); 2485 2486 if (offset >= fsize) 2487 continue; 2488 2489 if (zopt_verbose >= 6) 2490 (void) printf("injecting bad word into %s," 2491 " offset 0x%llx\n", pathrand, (u_longlong_t)offset); 2492 2493 if (pwrite(fd, &bad, sizeof (bad), offset) != sizeof (bad)) 2494 fatal(1, "can't inject bad word at 0x%llx in %s", 2495 offset, pathrand); 2496 } 2497 2498 (void) close(fd); 2499 } 2500 2501 static void 2502 ztest_error_setup(vdev_t *vd, int mode, int mask, uint64_t arg) 2503 { 2504 int c; 2505 2506 for (c = 0; c < vd->vdev_children; c++) 2507 ztest_error_setup(vd->vdev_child[c], mode, mask, arg); 2508 2509 if (vd->vdev_path != NULL) 2510 (void) vdev_error_setup(vd->vdev_spa, vd->vdev_path, 2511 mode, mask, arg); 2512 } 2513 2514 /* 2515 * Scrub the pool. 2516 */ 2517 void 2518 ztest_scrub(ztest_args_t *za) 2519 { 2520 spa_t *spa = dmu_objset_spa(za->za_os); 2521 2522 (void) spa_scrub(spa, POOL_SCRUB_EVERYTHING, B_FALSE); 2523 (void) poll(NULL, 0, 1000); /* wait a second, then force a restart */ 2524 (void) spa_scrub(spa, POOL_SCRUB_EVERYTHING, B_FALSE); 2525 } 2526 2527 /* 2528 * Rename the pool to a different name and then rename it back. 2529 */ 2530 void 2531 ztest_spa_rename(ztest_args_t *za) 2532 { 2533 char *oldname, *newname; 2534 int error; 2535 spa_t *spa; 2536 2537 (void) rw_wrlock(&ztest_shared->zs_name_lock); 2538 2539 oldname = za->za_pool; 2540 newname = umem_alloc(strlen(oldname) + 5, UMEM_NOFAIL); 2541 (void) strcpy(newname, oldname); 2542 (void) strcat(newname, "_tmp"); 2543 2544 /* 2545 * Do the rename 2546 */ 2547 error = spa_rename(oldname, newname); 2548 if (error) 2549 fatal(0, "spa_rename('%s', '%s') = %d", oldname, 2550 newname, error); 2551 2552 /* 2553 * Try to open it under the old name, which shouldn't exist 2554 */ 2555 error = spa_open(oldname, &spa, FTAG); 2556 if (error != ENOENT) 2557 fatal(0, "spa_open('%s') = %d", oldname, error); 2558 2559 /* 2560 * Open it under the new name and make sure it's still the same spa_t. 2561 */ 2562 error = spa_open(newname, &spa, FTAG); 2563 if (error != 0) 2564 fatal(0, "spa_open('%s') = %d", newname, error); 2565 2566 ASSERT(spa == dmu_objset_spa(za->za_os)); 2567 spa_close(spa, FTAG); 2568 2569 /* 2570 * Rename it back to the original 2571 */ 2572 error = spa_rename(newname, oldname); 2573 if (error) 2574 fatal(0, "spa_rename('%s', '%s') = %d", newname, 2575 oldname, error); 2576 2577 /* 2578 * Make sure it can still be opened 2579 */ 2580 error = spa_open(oldname, &spa, FTAG); 2581 if (error != 0) 2582 fatal(0, "spa_open('%s') = %d", oldname, error); 2583 2584 ASSERT(spa == dmu_objset_spa(za->za_os)); 2585 spa_close(spa, FTAG); 2586 2587 umem_free(newname, strlen(newname) + 1); 2588 2589 (void) rw_unlock(&ztest_shared->zs_name_lock); 2590 } 2591 2592 2593 /* 2594 * Completely obliterate one disk. 2595 */ 2596 static void 2597 ztest_obliterate_one_disk(uint64_t vdev) 2598 { 2599 int fd; 2600 char dev_name[MAXPATHLEN]; 2601 size_t fsize; 2602 2603 if (zopt_maxfaults < 2) 2604 return; 2605 2606 (void) sprintf(dev_name, ztest_dev_template, zopt_dir, zopt_pool, vdev); 2607 2608 fd = open(dev_name, O_RDWR); 2609 2610 if (fd == -1) 2611 fatal(1, "can't open %s", dev_name); 2612 2613 /* 2614 * Determine the size. 2615 */ 2616 fsize = lseek(fd, 0, SEEK_END); 2617 (void) close(fd); 2618 2619 /* 2620 * Remove it. 2621 */ 2622 VERIFY(remove(dev_name) == 0); 2623 2624 /* 2625 * Create a new one. 2626 */ 2627 VERIFY((fd = open(dev_name, O_RDWR | O_CREAT | O_TRUNC, 0666)) >= 0); 2628 VERIFY(ftruncate(fd, fsize) == 0); 2629 (void) close(fd); 2630 } 2631 2632 static void 2633 ztest_replace_one_disk(spa_t *spa, uint64_t vdev) 2634 { 2635 char dev_name[MAXPATHLEN]; 2636 nvlist_t *file, *root; 2637 int error; 2638 2639 (void) sprintf(dev_name, ztest_dev_template, zopt_dir, zopt_pool, vdev); 2640 2641 /* 2642 * Build the nvlist describing dev_name. 2643 */ 2644 VERIFY(nvlist_alloc(&file, NV_UNIQUE_NAME, 0) == 0); 2645 VERIFY(nvlist_add_string(file, ZPOOL_CONFIG_TYPE, VDEV_TYPE_FILE) == 0); 2646 VERIFY(nvlist_add_string(file, ZPOOL_CONFIG_PATH, dev_name) == 0); 2647 2648 VERIFY(nvlist_alloc(&root, NV_UNIQUE_NAME, 0) == 0); 2649 VERIFY(nvlist_add_string(root, ZPOOL_CONFIG_TYPE, VDEV_TYPE_ROOT) == 0); 2650 VERIFY(nvlist_add_nvlist_array(root, ZPOOL_CONFIG_CHILDREN, 2651 &file, 1) == 0); 2652 2653 error = spa_vdev_attach(spa, dev_name, root, B_TRUE); 2654 if (error != 0 && error != EBUSY && error != ENOTSUP && error != ENODEV) 2655 fatal(0, "spa_vdev_attach(in-place) = %d", error); 2656 2657 nvlist_free(file); 2658 nvlist_free(root); 2659 } 2660 2661 static void 2662 ztest_verify_blocks(char *pool) 2663 { 2664 int status; 2665 char zdb[MAXPATHLEN + MAXNAMELEN + 20]; 2666 char zbuf[1024]; 2667 char *bin; 2668 FILE *fp; 2669 2670 (void) realpath(getexecname(), zdb); 2671 2672 /* zdb lives in /usr/sbin, while ztest lives in /usr/bin */ 2673 bin = strstr(zdb, "/usr/bin/"); 2674 /* LINTED */ 2675 (void) sprintf(bin, "/usr/sbin/zdb -bc%s%s -U -O %s %s", 2676 zopt_verbose >= 3 ? "s" : "", 2677 zopt_verbose >= 4 ? "v" : "", 2678 ztest_random(2) == 0 ? "pre" : "post", pool); 2679 2680 if (zopt_verbose >= 5) 2681 (void) printf("Executing %s\n", strstr(zdb, "zdb ")); 2682 2683 fp = popen(zdb, "r"); 2684 2685 while (fgets(zbuf, sizeof (zbuf), fp) != NULL) 2686 if (zopt_verbose >= 3) 2687 (void) printf("%s", zbuf); 2688 2689 status = pclose(fp); 2690 2691 if (status == 0) 2692 return; 2693 2694 ztest_dump_core = 0; 2695 if (WIFEXITED(status)) 2696 fatal(0, "'%s' exit code %d", zdb, WEXITSTATUS(status)); 2697 else 2698 fatal(0, "'%s' died with signal %d", zdb, WTERMSIG(status)); 2699 } 2700 2701 static void 2702 ztest_walk_pool_directory(char *header) 2703 { 2704 spa_t *spa = NULL; 2705 2706 if (zopt_verbose >= 6) 2707 (void) printf("%s\n", header); 2708 2709 mutex_enter(&spa_namespace_lock); 2710 while ((spa = spa_next(spa)) != NULL) 2711 if (zopt_verbose >= 6) 2712 (void) printf("\t%s\n", spa_name(spa)); 2713 mutex_exit(&spa_namespace_lock); 2714 } 2715 2716 static void 2717 ztest_spa_import_export(char *oldname, char *newname) 2718 { 2719 nvlist_t *config; 2720 uint64_t pool_guid; 2721 spa_t *spa; 2722 int error; 2723 2724 if (zopt_verbose >= 4) { 2725 (void) printf("import/export: old = %s, new = %s\n", 2726 oldname, newname); 2727 } 2728 2729 /* 2730 * Clean up from previous runs. 2731 */ 2732 (void) spa_destroy(newname); 2733 2734 /* 2735 * Get the pool's configuration and guid. 2736 */ 2737 error = spa_open(oldname, &spa, FTAG); 2738 if (error) 2739 fatal(0, "spa_open('%s') = %d", oldname, error); 2740 2741 ASSERT(spa->spa_config != NULL); 2742 2743 VERIFY(nvlist_dup(spa->spa_config, &config, 0) == 0); 2744 pool_guid = spa_guid(spa); 2745 spa_close(spa, FTAG); 2746 2747 ztest_walk_pool_directory("pools before export"); 2748 2749 /* 2750 * Export it. 2751 */ 2752 error = spa_export(oldname); 2753 if (error) 2754 fatal(0, "spa_export('%s') = %d", oldname, error); 2755 2756 ztest_walk_pool_directory("pools after export"); 2757 2758 /* 2759 * Import it under the new name. 2760 */ 2761 error = spa_import(newname, config, NULL); 2762 if (error) 2763 fatal(0, "spa_import('%s') = %d", newname, error); 2764 2765 ztest_walk_pool_directory("pools after import"); 2766 2767 /* 2768 * Try to import it again -- should fail with EEXIST. 2769 */ 2770 error = spa_import(newname, config, NULL); 2771 if (error != EEXIST) 2772 fatal(0, "spa_import('%s') twice", newname); 2773 2774 /* 2775 * Try to import it under a different name -- should fail with EEXIST. 2776 */ 2777 error = spa_import(oldname, config, NULL); 2778 if (error != EEXIST) 2779 fatal(0, "spa_import('%s') under multiple names", newname); 2780 2781 /* 2782 * Verify that the pool is no longer visible under the old name. 2783 */ 2784 error = spa_open(oldname, &spa, FTAG); 2785 if (error != ENOENT) 2786 fatal(0, "spa_open('%s') = %d", newname, error); 2787 2788 /* 2789 * Verify that we can open and close the pool using the new name. 2790 */ 2791 error = spa_open(newname, &spa, FTAG); 2792 if (error) 2793 fatal(0, "spa_open('%s') = %d", newname, error); 2794 ASSERT(pool_guid == spa_guid(spa)); 2795 spa_close(spa, FTAG); 2796 2797 nvlist_free(config); 2798 } 2799 2800 static void * 2801 ztest_thread(void *arg) 2802 { 2803 ztest_args_t *za = arg; 2804 ztest_shared_t *zs = ztest_shared; 2805 hrtime_t now, functime; 2806 ztest_info_t *zi; 2807 int f; 2808 2809 while ((now = gethrtime()) < za->za_stop) { 2810 /* 2811 * See if it's time to force a crash. 2812 */ 2813 if (now > za->za_kill) { 2814 zs->zs_alloc = spa_get_alloc(dmu_objset_spa(za->za_os)); 2815 zs->zs_space = spa_get_space(dmu_objset_spa(za->za_os)); 2816 (void) kill(getpid(), SIGKILL); 2817 } 2818 2819 /* 2820 * Pick a random function. 2821 */ 2822 f = ztest_random(ZTEST_FUNCS); 2823 zi = &zs->zs_info[f]; 2824 2825 /* 2826 * Decide whether to call it, based on the requested frequency. 2827 */ 2828 if (zi->zi_call_target == 0 || 2829 (double)zi->zi_call_total / zi->zi_call_target > 2830 (double)(now - zs->zs_start_time) / (zopt_time * NANOSEC)) 2831 continue; 2832 2833 atomic_add_64(&zi->zi_calls, 1); 2834 atomic_add_64(&zi->zi_call_total, 1); 2835 2836 za->za_diroff = (za->za_instance * ZTEST_FUNCS + f) * 2837 ZTEST_DIRSIZE; 2838 za->za_diroff_shared = (1ULL << 63); 2839 2840 ztest_dmu_write_parallel(za); 2841 2842 zi->zi_func(za); 2843 2844 functime = gethrtime() - now; 2845 2846 atomic_add_64(&zi->zi_call_time, functime); 2847 2848 if (zopt_verbose >= 4) { 2849 Dl_info dli; 2850 (void) dladdr((void *)zi->zi_func, &dli); 2851 (void) printf("%6.2f sec in %s\n", 2852 (double)functime / NANOSEC, dli.dli_sname); 2853 } 2854 2855 /* 2856 * If we're getting ENOSPC with some regularity, stop. 2857 */ 2858 if (zs->zs_enospc_count > 10) 2859 break; 2860 } 2861 2862 return (NULL); 2863 } 2864 2865 /* 2866 * Kick off threads to run tests on all datasets in parallel. 2867 */ 2868 static void 2869 ztest_run(char *pool) 2870 { 2871 int t, d, error; 2872 ztest_shared_t *zs = ztest_shared; 2873 ztest_args_t *za; 2874 spa_t *spa; 2875 char name[100]; 2876 2877 (void) _mutex_init(&zs->zs_vdev_lock, USYNC_THREAD, NULL); 2878 (void) rwlock_init(&zs->zs_name_lock, USYNC_THREAD, NULL); 2879 2880 for (t = 0; t < ZTEST_SYNC_LOCKS; t++) 2881 (void) _mutex_init(&zs->zs_sync_lock[t], USYNC_THREAD, NULL); 2882 2883 /* 2884 * Destroy one disk before we even start. 2885 * It's mirrored, so everything should work just fine. 2886 * This makes us exercise fault handling very early in spa_load(). 2887 */ 2888 ztest_obliterate_one_disk(0); 2889 2890 /* 2891 * Verify that the sum of the sizes of all blocks in the pool 2892 * equals the SPA's allocated space total. 2893 */ 2894 ztest_verify_blocks(pool); 2895 2896 /* 2897 * Kick off a replacement of the disk we just obliterated. 2898 */ 2899 kernel_init(FREAD | FWRITE); 2900 error = spa_open(pool, &spa, FTAG); 2901 if (error) 2902 fatal(0, "spa_open(%s) = %d", pool, error); 2903 ztest_replace_one_disk(spa, 0); 2904 if (zopt_verbose >= 5) 2905 show_pool_stats(spa); 2906 spa_close(spa, FTAG); 2907 kernel_fini(); 2908 2909 kernel_init(FREAD | FWRITE); 2910 2911 /* 2912 * Verify that we can export the pool and reimport it under a 2913 * different name. 2914 */ 2915 (void) snprintf(name, 100, "%s_import", pool); 2916 ztest_spa_import_export(pool, name); 2917 ztest_spa_import_export(name, pool); 2918 2919 /* 2920 * Verify that we can loop over all pools. 2921 */ 2922 mutex_enter(&spa_namespace_lock); 2923 for (spa = spa_next(NULL); spa != NULL; spa = spa_next(spa)) { 2924 if (zopt_verbose > 3) { 2925 (void) printf("spa_next: found %s\n", spa_name(spa)); 2926 } 2927 } 2928 mutex_exit(&spa_namespace_lock); 2929 2930 /* 2931 * Open our pool. 2932 */ 2933 error = spa_open(pool, &spa, FTAG); 2934 if (error) 2935 fatal(0, "spa_open() = %d", error); 2936 2937 /* 2938 * Verify that we can safely inquire about about any object, 2939 * whether it's allocated or not. To make it interesting, 2940 * we probe a 5-wide window around each power of two. 2941 * This hits all edge cases, including zero and the max. 2942 */ 2943 for (t = 0; t < 64; t++) { 2944 for (d = -5; d <= 5; d++) { 2945 error = dmu_object_info(spa->spa_meta_objset, 2946 (1ULL << t) + d, NULL); 2947 ASSERT(error == 0 || error == ENOENT); 2948 } 2949 } 2950 2951 /* 2952 * Now kick off all the tests that run in parallel. 2953 */ 2954 zs->zs_enospc_count = 0; 2955 2956 za = umem_zalloc(zopt_threads * sizeof (ztest_args_t), UMEM_NOFAIL); 2957 2958 if (zopt_verbose >= 4) 2959 (void) printf("starting main threads...\n"); 2960 2961 za[0].za_start = gethrtime(); 2962 za[0].za_stop = za[0].za_start + zopt_passtime * NANOSEC; 2963 za[0].za_stop = MIN(za[0].za_stop, zs->zs_stop_time); 2964 za[0].za_kill = za[0].za_stop; 2965 if (ztest_random(100) < zopt_killrate) 2966 za[0].za_kill -= ztest_random(zopt_passtime * NANOSEC); 2967 2968 for (t = 0; t < zopt_threads; t++) { 2969 d = t % zopt_dirs; 2970 if (t < zopt_dirs) { 2971 ztest_replay_t zr; 2972 (void) rw_rdlock(&ztest_shared->zs_name_lock); 2973 (void) snprintf(name, 100, "%s/%s_%d", pool, pool, d); 2974 error = dmu_objset_create(name, DMU_OST_OTHER, NULL, 2975 ztest_create_cb, NULL); 2976 if (error != 0 && error != EEXIST) { 2977 if (error == ENOSPC) { 2978 zs->zs_enospc_count++; 2979 (void) rw_unlock( 2980 &ztest_shared->zs_name_lock); 2981 break; 2982 } 2983 fatal(0, "dmu_objset_create(%s) = %d", 2984 name, error); 2985 } 2986 error = dmu_objset_open(name, DMU_OST_OTHER, 2987 DS_MODE_STANDARD, &za[d].za_os); 2988 if (error) 2989 fatal(0, "dmu_objset_open('%s') = %d", 2990 name, error); 2991 (void) rw_unlock(&ztest_shared->zs_name_lock); 2992 zr.zr_os = za[d].za_os; 2993 zil_replay(zr.zr_os, &zr, &zr.zr_assign, 2994 ztest_replay_vector, NULL); 2995 za[d].za_zilog = zil_open(za[d].za_os, NULL); 2996 } 2997 za[t].za_pool = spa_strdup(pool); 2998 za[t].za_os = za[d].za_os; 2999 za[t].za_zilog = za[d].za_zilog; 3000 za[t].za_instance = t; 3001 za[t].za_random = ztest_random(-1ULL); 3002 za[t].za_start = za[0].za_start; 3003 za[t].za_stop = za[0].za_stop; 3004 za[t].za_kill = za[0].za_kill; 3005 3006 error = thr_create(0, 0, ztest_thread, &za[t], THR_BOUND, 3007 &za[t].za_thread); 3008 if (error) 3009 fatal(0, "can't create thread %d: error %d", 3010 t, error); 3011 } 3012 3013 while (--t >= 0) { 3014 error = thr_join(za[t].za_thread, NULL, NULL); 3015 if (error) 3016 fatal(0, "thr_join(%d) = %d", t, error); 3017 if (za[t].za_th) 3018 traverse_fini(za[t].za_th); 3019 if (t < zopt_dirs) { 3020 zil_close(za[t].za_zilog); 3021 dmu_objset_close(za[t].za_os); 3022 } 3023 spa_strfree(za[t].za_pool); 3024 } 3025 3026 umem_free(za, zopt_threads * sizeof (ztest_args_t)); 3027 3028 if (zopt_verbose >= 3) 3029 show_pool_stats(spa); 3030 3031 txg_wait_synced(spa_get_dsl(spa), 0); 3032 3033 zs->zs_alloc = spa_get_alloc(spa); 3034 zs->zs_space = spa_get_space(spa); 3035 3036 /* 3037 * Did we have out-of-space errors? If so, destroy a random objset. 3038 */ 3039 if (zs->zs_enospc_count != 0) { 3040 (void) rw_rdlock(&ztest_shared->zs_name_lock); 3041 (void) snprintf(name, 100, "%s/%s_%d", pool, pool, 3042 (int)ztest_random(zopt_dirs)); 3043 if (zopt_verbose >= 3) 3044 (void) printf("Destroying %s to free up space\n", name); 3045 dmu_objset_find(name, ztest_destroy_cb, NULL, 3046 DS_FIND_SNAPSHOTS); 3047 (void) rw_unlock(&ztest_shared->zs_name_lock); 3048 } 3049 3050 /* 3051 * Prepare every leaf device to inject a few random read faults. 3052 */ 3053 ztest_error_setup(spa->spa_root_vdev, VDEV_FAULT_COUNT, 3054 (1U << ZIO_TYPE_READ), 10); 3055 3056 /* 3057 * Right before closing the pool, kick off a bunch of async I/O; 3058 * spa_close() should wait for it to complete. 3059 */ 3060 for (t = 1; t < 50; t++) 3061 dmu_prefetch(spa->spa_meta_objset, t, 0, 1 << 15); 3062 3063 spa_close(spa, FTAG); 3064 3065 kernel_fini(); 3066 } 3067 3068 void 3069 print_time(hrtime_t t, char *timebuf) 3070 { 3071 hrtime_t s = t / NANOSEC; 3072 hrtime_t m = s / 60; 3073 hrtime_t h = m / 60; 3074 hrtime_t d = h / 24; 3075 3076 s -= m * 60; 3077 m -= h * 60; 3078 h -= d * 24; 3079 3080 timebuf[0] = '\0'; 3081 3082 if (d) 3083 (void) sprintf(timebuf, 3084 "%llud%02lluh%02llum%02llus", d, h, m, s); 3085 else if (h) 3086 (void) sprintf(timebuf, "%lluh%02llum%02llus", h, m, s); 3087 else if (m) 3088 (void) sprintf(timebuf, "%llum%02llus", m, s); 3089 else 3090 (void) sprintf(timebuf, "%llus", s); 3091 } 3092 3093 /* 3094 * Create a storage pool with the given name and initial vdev size. 3095 * Then create the specified number of datasets in the pool. 3096 */ 3097 static void 3098 ztest_init(char *pool) 3099 { 3100 spa_t *spa; 3101 int error; 3102 nvlist_t *nvroot; 3103 3104 kernel_init(FREAD | FWRITE); 3105 3106 /* 3107 * Create the storage pool. 3108 */ 3109 (void) spa_destroy(pool); 3110 ztest_shared->zs_vdev_primaries = 0; 3111 nvroot = make_vdev_root(zopt_vdev_size, zopt_raidz, zopt_mirrors, 1); 3112 error = spa_create(pool, nvroot, NULL); 3113 nvlist_free(nvroot); 3114 3115 if (error) 3116 fatal(0, "spa_create() = %d", error); 3117 error = spa_open(pool, &spa, FTAG); 3118 if (error) 3119 fatal(0, "spa_open() = %d", error); 3120 3121 if (zopt_verbose >= 3) 3122 show_pool_stats(spa); 3123 3124 spa_close(spa, FTAG); 3125 3126 kernel_fini(); 3127 } 3128 3129 int 3130 main(int argc, char **argv) 3131 { 3132 int kills = 0; 3133 int iters = 0; 3134 int i, f; 3135 ztest_shared_t *zs; 3136 ztest_info_t *zi; 3137 char timebuf[100]; 3138 char numbuf[6]; 3139 3140 (void) setvbuf(stdout, NULL, _IOLBF, 0); 3141 3142 /* Override location of zpool.cache */ 3143 spa_config_dir = "/tmp"; 3144 3145 /* 3146 * Blow away any existing copy of zpool.cache 3147 */ 3148 (void) remove("/tmp/zpool.cache"); 3149 3150 ztest_random_fd = open("/dev/urandom", O_RDONLY); 3151 3152 process_options(argc, argv); 3153 3154 argc -= optind; 3155 argv += optind; 3156 3157 dprintf_setup(&argc, argv); 3158 3159 zs = ztest_shared = (void *)mmap(0, 3160 P2ROUNDUP(sizeof (ztest_shared_t), getpagesize()), 3161 PROT_READ | PROT_WRITE, MAP_SHARED | MAP_ANON, -1, 0); 3162 3163 if (zopt_verbose >= 1) { 3164 (void) printf("%llu vdevs, %d datasets, %d threads," 3165 " %llu seconds...\n", 3166 (u_longlong_t)zopt_vdevs, zopt_dirs, zopt_threads, 3167 (u_longlong_t)zopt_time); 3168 } 3169 3170 /* 3171 * Create and initialize our storage pool. 3172 */ 3173 for (i = 1; i <= zopt_init; i++) { 3174 bzero(zs, sizeof (ztest_shared_t)); 3175 if (zopt_verbose >= 3 && zopt_init != 1) 3176 (void) printf("ztest_init(), pass %d\n", i); 3177 ztest_init(zopt_pool); 3178 } 3179 3180 /* 3181 * Initialize the call targets for each function. 3182 */ 3183 for (f = 0; f < ZTEST_FUNCS; f++) { 3184 zi = &zs->zs_info[f]; 3185 3186 *zi = ztest_info[f]; 3187 3188 if (*zi->zi_interval == 0) 3189 zi->zi_call_target = UINT64_MAX; 3190 else 3191 zi->zi_call_target = zopt_time / *zi->zi_interval; 3192 } 3193 3194 zs->zs_start_time = gethrtime(); 3195 zs->zs_stop_time = zs->zs_start_time + zopt_time * NANOSEC; 3196 3197 /* 3198 * Run the tests in a loop. These tests include fault injection 3199 * to verify that self-healing data works, and forced crashes 3200 * to verify that we never lose on-disk consistency. 3201 */ 3202 while (gethrtime() < zs->zs_stop_time) { 3203 int status; 3204 pid_t pid; 3205 char *tmp; 3206 3207 /* 3208 * Initialize the workload counters for each function. 3209 */ 3210 for (f = 0; f < ZTEST_FUNCS; f++) { 3211 zi = &zs->zs_info[f]; 3212 zi->zi_calls = 0; 3213 zi->zi_call_time = 0; 3214 } 3215 3216 pid = fork(); 3217 3218 if (pid == -1) 3219 fatal(1, "fork failed"); 3220 3221 if (pid == 0) { /* child */ 3222 struct rlimit rl = { 1024, 1024 }; 3223 (void) setrlimit(RLIMIT_NOFILE, &rl); 3224 ztest_run(zopt_pool); 3225 exit(0); 3226 } 3227 3228 while (waitpid(pid, &status, WEXITED) != pid) 3229 continue; 3230 3231 if (WIFEXITED(status)) { 3232 if (WEXITSTATUS(status) != 0) { 3233 (void) fprintf(stderr, 3234 "child exited with code %d\n", 3235 WEXITSTATUS(status)); 3236 exit(2); 3237 } 3238 } else { 3239 if (WTERMSIG(status) != SIGKILL) { 3240 (void) fprintf(stderr, 3241 "child died with signal %d\n", 3242 WTERMSIG(status)); 3243 exit(3); 3244 } 3245 kills++; 3246 } 3247 3248 iters++; 3249 3250 if (zopt_verbose >= 1) { 3251 hrtime_t now = gethrtime(); 3252 3253 now = MIN(now, zs->zs_stop_time); 3254 print_time(zs->zs_stop_time - now, timebuf); 3255 nicenum(zs->zs_space, numbuf); 3256 3257 (void) printf("Pass %3d, %8s, %3llu ENOSPC, " 3258 "%4.1f%% of %5s used, %3.0f%% done, %8s to go\n", 3259 iters, 3260 WIFEXITED(status) ? "Complete" : "SIGKILL", 3261 (u_longlong_t)zs->zs_enospc_count, 3262 100.0 * zs->zs_alloc / zs->zs_space, 3263 numbuf, 3264 100.0 * (now - zs->zs_start_time) / 3265 (zopt_time * NANOSEC), timebuf); 3266 } 3267 3268 if (zopt_verbose >= 2) { 3269 (void) printf("\nWorkload summary:\n\n"); 3270 (void) printf("%7s %9s %s\n", 3271 "Calls", "Time", "Function"); 3272 (void) printf("%7s %9s %s\n", 3273 "-----", "----", "--------"); 3274 for (f = 0; f < ZTEST_FUNCS; f++) { 3275 Dl_info dli; 3276 3277 zi = &zs->zs_info[f]; 3278 print_time(zi->zi_call_time, timebuf); 3279 (void) dladdr((void *)zi->zi_func, &dli); 3280 (void) printf("%7llu %9s %s\n", 3281 (u_longlong_t)zi->zi_calls, timebuf, 3282 dli.dli_sname); 3283 } 3284 (void) printf("\n"); 3285 } 3286 3287 /* 3288 * It's possible that we killed a child during a rename test, in 3289 * which case we'll have a 'ztest_tmp' pool lying around instead 3290 * of 'ztest'. Do a blind rename in case this happened. 3291 */ 3292 tmp = umem_alloc(strlen(zopt_pool) + 5, UMEM_NOFAIL); 3293 (void) strcpy(tmp, zopt_pool); 3294 (void) strcat(tmp, "_tmp"); 3295 kernel_init(FREAD | FWRITE); 3296 (void) spa_rename(tmp, zopt_pool); 3297 kernel_fini(); 3298 umem_free(tmp, strlen(tmp) + 1); 3299 } 3300 3301 ztest_verify_blocks(zopt_pool); 3302 3303 if (zopt_verbose >= 1) { 3304 (void) printf("%d killed, %d completed, %.0f%% kill rate\n", 3305 kills, iters - kills, (100.0 * kills) / MAX(1, iters)); 3306 } 3307 3308 return (0); 3309 } 3310