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 (the "License"). 6 * You may not use this file except in compliance with the License. 7 * 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9 * or http://www.opensolaris.org/os/licensing. 10 * See the License for the specific language governing permissions 11 * and limitations under the License. 12 * 13 * When distributing Covered Code, include this CDDL HEADER in each 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15 * If applicable, add the following below this CDDL HEADER, with the 16 * fields enclosed by brackets "[]" replaced with your own identifying 17 * information: Portions Copyright [yyyy] [name of copyright owner] 18 * 19 * CDDL HEADER END 20 */ 21 /* 22 * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved. 23 * Copyright (c) 2013 by Delphix. All rights reserved. 24 * Copyright 2011 Nexenta Systems, Inc. All rights reserved. 25 * Copyright (c) 2013 Steven Hartland. All rights reserved. 26 */ 27 28 /* 29 * The objective of this program is to provide a DMU/ZAP/SPA stress test 30 * that runs entirely in userland, is easy to use, and easy to extend. 31 * 32 * The overall design of the ztest program is as follows: 33 * 34 * (1) For each major functional area (e.g. adding vdevs to a pool, 35 * creating and destroying datasets, reading and writing objects, etc) 36 * we have a simple routine to test that functionality. These 37 * individual routines do not have to do anything "stressful". 38 * 39 * (2) We turn these simple functionality tests into a stress test by 40 * running them all in parallel, with as many threads as desired, 41 * and spread across as many datasets, objects, and vdevs as desired. 42 * 43 * (3) While all this is happening, we inject faults into the pool to 44 * verify that self-healing data really works. 45 * 46 * (4) Every time we open a dataset, we change its checksum and compression 47 * functions. Thus even individual objects vary from block to block 48 * in which checksum they use and whether they're compressed. 49 * 50 * (5) To verify that we never lose on-disk consistency after a crash, 51 * we run the entire test in a child of the main process. 52 * At random times, the child self-immolates with a SIGKILL. 53 * This is the software equivalent of pulling the power cord. 54 * The parent then runs the test again, using the existing 55 * storage pool, as many times as desired. If backwards compatability 56 * testing is enabled ztest will sometimes run the "older" version 57 * of ztest after a SIGKILL. 58 * 59 * (6) To verify that we don't have future leaks or temporal incursions, 60 * many of the functional tests record the transaction group number 61 * as part of their data. When reading old data, they verify that 62 * the transaction group number is less than the current, open txg. 63 * If you add a new test, please do this if applicable. 64 * 65 * When run with no arguments, ztest runs for about five minutes and 66 * produces no output if successful. To get a little bit of information, 67 * specify -V. To get more information, specify -VV, and so on. 68 * 69 * To turn this into an overnight stress test, use -T to specify run time. 70 * 71 * You can ask more more vdevs [-v], datasets [-d], or threads [-t] 72 * to increase the pool capacity, fanout, and overall stress level. 73 * 74 * Use the -k option to set the desired frequency of kills. 75 * 76 * When ztest invokes itself it passes all relevant information through a 77 * temporary file which is mmap-ed in the child process. This allows shared 78 * memory to survive the exec syscall. The ztest_shared_hdr_t struct is always 79 * stored at offset 0 of this file and contains information on the size and 80 * number of shared structures in the file. The information stored in this file 81 * must remain backwards compatible with older versions of ztest so that 82 * ztest can invoke them during backwards compatibility testing (-B). 83 */ 84 85 #include <sys/zfs_context.h> 86 #include <sys/spa.h> 87 #include <sys/dmu.h> 88 #include <sys/txg.h> 89 #include <sys/dbuf.h> 90 #include <sys/zap.h> 91 #include <sys/dmu_objset.h> 92 #include <sys/poll.h> 93 #include <sys/stat.h> 94 #include <sys/time.h> 95 #include <sys/wait.h> 96 #include <sys/mman.h> 97 #include <sys/resource.h> 98 #include <sys/zio.h> 99 #include <sys/zil.h> 100 #include <sys/zil_impl.h> 101 #include <sys/vdev_impl.h> 102 #include <sys/vdev_file.h> 103 #include <sys/spa_impl.h> 104 #include <sys/metaslab_impl.h> 105 #include <sys/dsl_prop.h> 106 #include <sys/dsl_dataset.h> 107 #include <sys/dsl_destroy.h> 108 #include <sys/dsl_scan.h> 109 #include <sys/zio_checksum.h> 110 #include <sys/refcount.h> 111 #include <sys/zfeature.h> 112 #include <sys/dsl_userhold.h> 113 #include <stdio.h> 114 #include <stdio_ext.h> 115 #include <stdlib.h> 116 #include <unistd.h> 117 #include <signal.h> 118 #include <umem.h> 119 #include <dlfcn.h> 120 #include <ctype.h> 121 #include <math.h> 122 #include <sys/fs/zfs.h> 123 #include <libnvpair.h> 124 125 static int ztest_fd_data = -1; 126 static int ztest_fd_rand = -1; 127 128 typedef struct ztest_shared_hdr { 129 uint64_t zh_hdr_size; 130 uint64_t zh_opts_size; 131 uint64_t zh_size; 132 uint64_t zh_stats_size; 133 uint64_t zh_stats_count; 134 uint64_t zh_ds_size; 135 uint64_t zh_ds_count; 136 } ztest_shared_hdr_t; 137 138 static ztest_shared_hdr_t *ztest_shared_hdr; 139 140 typedef struct ztest_shared_opts { 141 char zo_pool[MAXNAMELEN]; 142 char zo_dir[MAXNAMELEN]; 143 char zo_alt_ztest[MAXNAMELEN]; 144 char zo_alt_libpath[MAXNAMELEN]; 145 uint64_t zo_vdevs; 146 uint64_t zo_vdevtime; 147 size_t zo_vdev_size; 148 int zo_ashift; 149 int zo_mirrors; 150 int zo_raidz; 151 int zo_raidz_parity; 152 int zo_datasets; 153 int zo_threads; 154 uint64_t zo_passtime; 155 uint64_t zo_killrate; 156 int zo_verbose; 157 int zo_init; 158 uint64_t zo_time; 159 uint64_t zo_maxloops; 160 uint64_t zo_metaslab_gang_bang; 161 } ztest_shared_opts_t; 162 163 static const ztest_shared_opts_t ztest_opts_defaults = { 164 .zo_pool = { 'z', 't', 'e', 's', 't', '\0' }, 165 .zo_dir = { '/', 't', 'm', 'p', '\0' }, 166 .zo_alt_ztest = { '\0' }, 167 .zo_alt_libpath = { '\0' }, 168 .zo_vdevs = 5, 169 .zo_ashift = SPA_MINBLOCKSHIFT, 170 .zo_mirrors = 2, 171 .zo_raidz = 4, 172 .zo_raidz_parity = 1, 173 .zo_vdev_size = SPA_MINDEVSIZE, 174 .zo_datasets = 7, 175 .zo_threads = 23, 176 .zo_passtime = 60, /* 60 seconds */ 177 .zo_killrate = 70, /* 70% kill rate */ 178 .zo_verbose = 0, 179 .zo_init = 1, 180 .zo_time = 300, /* 5 minutes */ 181 .zo_maxloops = 50, /* max loops during spa_freeze() */ 182 .zo_metaslab_gang_bang = 32 << 10 183 }; 184 185 extern uint64_t metaslab_gang_bang; 186 extern uint64_t metaslab_df_alloc_threshold; 187 extern uint64_t zfs_deadman_synctime_ms; 188 189 static ztest_shared_opts_t *ztest_shared_opts; 190 static ztest_shared_opts_t ztest_opts; 191 192 typedef struct ztest_shared_ds { 193 uint64_t zd_seq; 194 } ztest_shared_ds_t; 195 196 static ztest_shared_ds_t *ztest_shared_ds; 197 #define ZTEST_GET_SHARED_DS(d) (&ztest_shared_ds[d]) 198 199 #define BT_MAGIC 0x123456789abcdefULL 200 #define MAXFAULTS() \ 201 (MAX(zs->zs_mirrors, 1) * (ztest_opts.zo_raidz_parity + 1) - 1) 202 203 enum ztest_io_type { 204 ZTEST_IO_WRITE_TAG, 205 ZTEST_IO_WRITE_PATTERN, 206 ZTEST_IO_WRITE_ZEROES, 207 ZTEST_IO_TRUNCATE, 208 ZTEST_IO_SETATTR, 209 ZTEST_IO_REWRITE, 210 ZTEST_IO_TYPES 211 }; 212 213 typedef struct ztest_block_tag { 214 uint64_t bt_magic; 215 uint64_t bt_objset; 216 uint64_t bt_object; 217 uint64_t bt_offset; 218 uint64_t bt_gen; 219 uint64_t bt_txg; 220 uint64_t bt_crtxg; 221 } ztest_block_tag_t; 222 223 typedef struct bufwad { 224 uint64_t bw_index; 225 uint64_t bw_txg; 226 uint64_t bw_data; 227 } bufwad_t; 228 229 /* 230 * XXX -- fix zfs range locks to be generic so we can use them here. 231 */ 232 typedef enum { 233 RL_READER, 234 RL_WRITER, 235 RL_APPEND 236 } rl_type_t; 237 238 typedef struct rll { 239 void *rll_writer; 240 int rll_readers; 241 mutex_t rll_lock; 242 cond_t rll_cv; 243 } rll_t; 244 245 typedef struct rl { 246 uint64_t rl_object; 247 uint64_t rl_offset; 248 uint64_t rl_size; 249 rll_t *rl_lock; 250 } rl_t; 251 252 #define ZTEST_RANGE_LOCKS 64 253 #define ZTEST_OBJECT_LOCKS 64 254 255 /* 256 * Object descriptor. Used as a template for object lookup/create/remove. 257 */ 258 typedef struct ztest_od { 259 uint64_t od_dir; 260 uint64_t od_object; 261 dmu_object_type_t od_type; 262 dmu_object_type_t od_crtype; 263 uint64_t od_blocksize; 264 uint64_t od_crblocksize; 265 uint64_t od_gen; 266 uint64_t od_crgen; 267 char od_name[MAXNAMELEN]; 268 } ztest_od_t; 269 270 /* 271 * Per-dataset state. 272 */ 273 typedef struct ztest_ds { 274 ztest_shared_ds_t *zd_shared; 275 objset_t *zd_os; 276 rwlock_t zd_zilog_lock; 277 zilog_t *zd_zilog; 278 ztest_od_t *zd_od; /* debugging aid */ 279 char zd_name[MAXNAMELEN]; 280 mutex_t zd_dirobj_lock; 281 rll_t zd_object_lock[ZTEST_OBJECT_LOCKS]; 282 rll_t zd_range_lock[ZTEST_RANGE_LOCKS]; 283 } ztest_ds_t; 284 285 /* 286 * Per-iteration state. 287 */ 288 typedef void ztest_func_t(ztest_ds_t *zd, uint64_t id); 289 290 typedef struct ztest_info { 291 ztest_func_t *zi_func; /* test function */ 292 uint64_t zi_iters; /* iterations per execution */ 293 uint64_t *zi_interval; /* execute every <interval> seconds */ 294 } ztest_info_t; 295 296 typedef struct ztest_shared_callstate { 297 uint64_t zc_count; /* per-pass count */ 298 uint64_t zc_time; /* per-pass time */ 299 uint64_t zc_next; /* next time to call this function */ 300 } ztest_shared_callstate_t; 301 302 static ztest_shared_callstate_t *ztest_shared_callstate; 303 #define ZTEST_GET_SHARED_CALLSTATE(c) (&ztest_shared_callstate[c]) 304 305 /* 306 * Note: these aren't static because we want dladdr() to work. 307 */ 308 ztest_func_t ztest_dmu_read_write; 309 ztest_func_t ztest_dmu_write_parallel; 310 ztest_func_t ztest_dmu_object_alloc_free; 311 ztest_func_t ztest_dmu_commit_callbacks; 312 ztest_func_t ztest_zap; 313 ztest_func_t ztest_zap_parallel; 314 ztest_func_t ztest_zil_commit; 315 ztest_func_t ztest_zil_remount; 316 ztest_func_t ztest_dmu_read_write_zcopy; 317 ztest_func_t ztest_dmu_objset_create_destroy; 318 ztest_func_t ztest_dmu_prealloc; 319 ztest_func_t ztest_fzap; 320 ztest_func_t ztest_dmu_snapshot_create_destroy; 321 ztest_func_t ztest_dsl_prop_get_set; 322 ztest_func_t ztest_spa_prop_get_set; 323 ztest_func_t ztest_spa_create_destroy; 324 ztest_func_t ztest_fault_inject; 325 ztest_func_t ztest_ddt_repair; 326 ztest_func_t ztest_dmu_snapshot_hold; 327 ztest_func_t ztest_spa_rename; 328 ztest_func_t ztest_scrub; 329 ztest_func_t ztest_dsl_dataset_promote_busy; 330 ztest_func_t ztest_vdev_attach_detach; 331 ztest_func_t ztest_vdev_LUN_growth; 332 ztest_func_t ztest_vdev_add_remove; 333 ztest_func_t ztest_vdev_aux_add_remove; 334 ztest_func_t ztest_split_pool; 335 ztest_func_t ztest_reguid; 336 ztest_func_t ztest_spa_upgrade; 337 338 uint64_t zopt_always = 0ULL * NANOSEC; /* all the time */ 339 uint64_t zopt_incessant = 1ULL * NANOSEC / 10; /* every 1/10 second */ 340 uint64_t zopt_often = 1ULL * NANOSEC; /* every second */ 341 uint64_t zopt_sometimes = 10ULL * NANOSEC; /* every 10 seconds */ 342 uint64_t zopt_rarely = 60ULL * NANOSEC; /* every 60 seconds */ 343 344 ztest_info_t ztest_info[] = { 345 { ztest_dmu_read_write, 1, &zopt_always }, 346 { ztest_dmu_write_parallel, 10, &zopt_always }, 347 { ztest_dmu_object_alloc_free, 1, &zopt_always }, 348 { ztest_dmu_commit_callbacks, 1, &zopt_always }, 349 { ztest_zap, 30, &zopt_always }, 350 { ztest_zap_parallel, 100, &zopt_always }, 351 { ztest_split_pool, 1, &zopt_always }, 352 { ztest_zil_commit, 1, &zopt_incessant }, 353 { ztest_zil_remount, 1, &zopt_sometimes }, 354 { ztest_dmu_read_write_zcopy, 1, &zopt_often }, 355 { ztest_dmu_objset_create_destroy, 1, &zopt_often }, 356 { ztest_dsl_prop_get_set, 1, &zopt_often }, 357 { ztest_spa_prop_get_set, 1, &zopt_sometimes }, 358 #if 0 359 { ztest_dmu_prealloc, 1, &zopt_sometimes }, 360 #endif 361 { ztest_fzap, 1, &zopt_sometimes }, 362 { ztest_dmu_snapshot_create_destroy, 1, &zopt_sometimes }, 363 { ztest_spa_create_destroy, 1, &zopt_sometimes }, 364 { ztest_fault_inject, 1, &zopt_sometimes }, 365 { ztest_ddt_repair, 1, &zopt_sometimes }, 366 { ztest_dmu_snapshot_hold, 1, &zopt_sometimes }, 367 { ztest_reguid, 1, &zopt_rarely }, 368 { ztest_spa_rename, 1, &zopt_rarely }, 369 { ztest_scrub, 1, &zopt_rarely }, 370 { ztest_spa_upgrade, 1, &zopt_rarely }, 371 { ztest_dsl_dataset_promote_busy, 1, &zopt_rarely }, 372 { ztest_vdev_attach_detach, 1, &zopt_sometimes }, 373 { ztest_vdev_LUN_growth, 1, &zopt_rarely }, 374 { ztest_vdev_add_remove, 1, 375 &ztest_opts.zo_vdevtime }, 376 { ztest_vdev_aux_add_remove, 1, 377 &ztest_opts.zo_vdevtime }, 378 }; 379 380 #define ZTEST_FUNCS (sizeof (ztest_info) / sizeof (ztest_info_t)) 381 382 /* 383 * The following struct is used to hold a list of uncalled commit callbacks. 384 * The callbacks are ordered by txg number. 385 */ 386 typedef struct ztest_cb_list { 387 mutex_t zcl_callbacks_lock; 388 list_t zcl_callbacks; 389 } ztest_cb_list_t; 390 391 /* 392 * Stuff we need to share writably between parent and child. 393 */ 394 typedef struct ztest_shared { 395 boolean_t zs_do_init; 396 hrtime_t zs_proc_start; 397 hrtime_t zs_proc_stop; 398 hrtime_t zs_thread_start; 399 hrtime_t zs_thread_stop; 400 hrtime_t zs_thread_kill; 401 uint64_t zs_enospc_count; 402 uint64_t zs_vdev_next_leaf; 403 uint64_t zs_vdev_aux; 404 uint64_t zs_alloc; 405 uint64_t zs_space; 406 uint64_t zs_splits; 407 uint64_t zs_mirrors; 408 uint64_t zs_metaslab_sz; 409 uint64_t zs_metaslab_df_alloc_threshold; 410 uint64_t zs_guid; 411 } ztest_shared_t; 412 413 #define ID_PARALLEL -1ULL 414 415 static char ztest_dev_template[] = "%s/%s.%llua"; 416 static char ztest_aux_template[] = "%s/%s.%s.%llu"; 417 ztest_shared_t *ztest_shared; 418 419 static spa_t *ztest_spa = NULL; 420 static ztest_ds_t *ztest_ds; 421 422 static mutex_t ztest_vdev_lock; 423 424 /* 425 * The ztest_name_lock protects the pool and dataset namespace used by 426 * the individual tests. To modify the namespace, consumers must grab 427 * this lock as writer. Grabbing the lock as reader will ensure that the 428 * namespace does not change while the lock is held. 429 */ 430 static rwlock_t ztest_name_lock; 431 432 static boolean_t ztest_dump_core = B_TRUE; 433 static boolean_t ztest_exiting; 434 435 /* Global commit callback list */ 436 static ztest_cb_list_t zcl; 437 438 enum ztest_object { 439 ZTEST_META_DNODE = 0, 440 ZTEST_DIROBJ, 441 ZTEST_OBJECTS 442 }; 443 444 static void usage(boolean_t) __NORETURN; 445 446 /* 447 * These libumem hooks provide a reasonable set of defaults for the allocator's 448 * debugging facilities. 449 */ 450 const char * 451 _umem_debug_init() 452 { 453 return ("default,verbose"); /* $UMEM_DEBUG setting */ 454 } 455 456 const char * 457 _umem_logging_init(void) 458 { 459 return ("fail,contents"); /* $UMEM_LOGGING setting */ 460 } 461 462 #define FATAL_MSG_SZ 1024 463 464 char *fatal_msg; 465 466 static void 467 fatal(int do_perror, char *message, ...) 468 { 469 va_list args; 470 int save_errno = errno; 471 char buf[FATAL_MSG_SZ]; 472 473 (void) fflush(stdout); 474 475 va_start(args, message); 476 (void) sprintf(buf, "ztest: "); 477 /* LINTED */ 478 (void) vsprintf(buf + strlen(buf), message, args); 479 va_end(args); 480 if (do_perror) { 481 (void) snprintf(buf + strlen(buf), FATAL_MSG_SZ - strlen(buf), 482 ": %s", strerror(save_errno)); 483 } 484 (void) fprintf(stderr, "%s\n", buf); 485 fatal_msg = buf; /* to ease debugging */ 486 if (ztest_dump_core) 487 abort(); 488 exit(3); 489 } 490 491 static int 492 str2shift(const char *buf) 493 { 494 const char *ends = "BKMGTPEZ"; 495 int i; 496 497 if (buf[0] == '\0') 498 return (0); 499 for (i = 0; i < strlen(ends); i++) { 500 if (toupper(buf[0]) == ends[i]) 501 break; 502 } 503 if (i == strlen(ends)) { 504 (void) fprintf(stderr, "ztest: invalid bytes suffix: %s\n", 505 buf); 506 usage(B_FALSE); 507 } 508 if (buf[1] == '\0' || (toupper(buf[1]) == 'B' && buf[2] == '\0')) { 509 return (10*i); 510 } 511 (void) fprintf(stderr, "ztest: invalid bytes suffix: %s\n", buf); 512 usage(B_FALSE); 513 /* NOTREACHED */ 514 } 515 516 static uint64_t 517 nicenumtoull(const char *buf) 518 { 519 char *end; 520 uint64_t val; 521 522 val = strtoull(buf, &end, 0); 523 if (end == buf) { 524 (void) fprintf(stderr, "ztest: bad numeric value: %s\n", buf); 525 usage(B_FALSE); 526 } else if (end[0] == '.') { 527 double fval = strtod(buf, &end); 528 fval *= pow(2, str2shift(end)); 529 if (fval > UINT64_MAX) { 530 (void) fprintf(stderr, "ztest: value too large: %s\n", 531 buf); 532 usage(B_FALSE); 533 } 534 val = (uint64_t)fval; 535 } else { 536 int shift = str2shift(end); 537 if (shift >= 64 || (val << shift) >> shift != val) { 538 (void) fprintf(stderr, "ztest: value too large: %s\n", 539 buf); 540 usage(B_FALSE); 541 } 542 val <<= shift; 543 } 544 return (val); 545 } 546 547 static void 548 usage(boolean_t requested) 549 { 550 const ztest_shared_opts_t *zo = &ztest_opts_defaults; 551 552 char nice_vdev_size[10]; 553 char nice_gang_bang[10]; 554 FILE *fp = requested ? stdout : stderr; 555 556 nicenum(zo->zo_vdev_size, nice_vdev_size); 557 nicenum(zo->zo_metaslab_gang_bang, nice_gang_bang); 558 559 (void) fprintf(fp, "Usage: %s\n" 560 "\t[-v vdevs (default: %llu)]\n" 561 "\t[-s size_of_each_vdev (default: %s)]\n" 562 "\t[-a alignment_shift (default: %d)] use 0 for random\n" 563 "\t[-m mirror_copies (default: %d)]\n" 564 "\t[-r raidz_disks (default: %d)]\n" 565 "\t[-R raidz_parity (default: %d)]\n" 566 "\t[-d datasets (default: %d)]\n" 567 "\t[-t threads (default: %d)]\n" 568 "\t[-g gang_block_threshold (default: %s)]\n" 569 "\t[-i init_count (default: %d)] initialize pool i times\n" 570 "\t[-k kill_percentage (default: %llu%%)]\n" 571 "\t[-p pool_name (default: %s)]\n" 572 "\t[-f dir (default: %s)] file directory for vdev files\n" 573 "\t[-V] verbose (use multiple times for ever more blather)\n" 574 "\t[-E] use existing pool instead of creating new one\n" 575 "\t[-T time (default: %llu sec)] total run time\n" 576 "\t[-F freezeloops (default: %llu)] max loops in spa_freeze()\n" 577 "\t[-P passtime (default: %llu sec)] time per pass\n" 578 "\t[-B alt_ztest (default: <none>)] alternate ztest path\n" 579 "\t[-h] (print help)\n" 580 "", 581 zo->zo_pool, 582 (u_longlong_t)zo->zo_vdevs, /* -v */ 583 nice_vdev_size, /* -s */ 584 zo->zo_ashift, /* -a */ 585 zo->zo_mirrors, /* -m */ 586 zo->zo_raidz, /* -r */ 587 zo->zo_raidz_parity, /* -R */ 588 zo->zo_datasets, /* -d */ 589 zo->zo_threads, /* -t */ 590 nice_gang_bang, /* -g */ 591 zo->zo_init, /* -i */ 592 (u_longlong_t)zo->zo_killrate, /* -k */ 593 zo->zo_pool, /* -p */ 594 zo->zo_dir, /* -f */ 595 (u_longlong_t)zo->zo_time, /* -T */ 596 (u_longlong_t)zo->zo_maxloops, /* -F */ 597 (u_longlong_t)zo->zo_passtime); 598 exit(requested ? 0 : 1); 599 } 600 601 static void 602 process_options(int argc, char **argv) 603 { 604 char *path; 605 ztest_shared_opts_t *zo = &ztest_opts; 606 607 int opt; 608 uint64_t value; 609 char altdir[MAXNAMELEN] = { 0 }; 610 611 bcopy(&ztest_opts_defaults, zo, sizeof (*zo)); 612 613 while ((opt = getopt(argc, argv, 614 "v:s:a:m:r:R:d:t:g:i:k:p:f:VET:P:hF:B:")) != EOF) { 615 value = 0; 616 switch (opt) { 617 case 'v': 618 case 's': 619 case 'a': 620 case 'm': 621 case 'r': 622 case 'R': 623 case 'd': 624 case 't': 625 case 'g': 626 case 'i': 627 case 'k': 628 case 'T': 629 case 'P': 630 case 'F': 631 value = nicenumtoull(optarg); 632 } 633 switch (opt) { 634 case 'v': 635 zo->zo_vdevs = value; 636 break; 637 case 's': 638 zo->zo_vdev_size = MAX(SPA_MINDEVSIZE, value); 639 break; 640 case 'a': 641 zo->zo_ashift = value; 642 break; 643 case 'm': 644 zo->zo_mirrors = value; 645 break; 646 case 'r': 647 zo->zo_raidz = MAX(1, value); 648 break; 649 case 'R': 650 zo->zo_raidz_parity = MIN(MAX(value, 1), 3); 651 break; 652 case 'd': 653 zo->zo_datasets = MAX(1, value); 654 break; 655 case 't': 656 zo->zo_threads = MAX(1, value); 657 break; 658 case 'g': 659 zo->zo_metaslab_gang_bang = MAX(SPA_MINBLOCKSIZE << 1, 660 value); 661 break; 662 case 'i': 663 zo->zo_init = value; 664 break; 665 case 'k': 666 zo->zo_killrate = value; 667 break; 668 case 'p': 669 (void) strlcpy(zo->zo_pool, optarg, 670 sizeof (zo->zo_pool)); 671 break; 672 case 'f': 673 path = realpath(optarg, NULL); 674 if (path == NULL) { 675 (void) fprintf(stderr, "error: %s: %s\n", 676 optarg, strerror(errno)); 677 usage(B_FALSE); 678 } else { 679 (void) strlcpy(zo->zo_dir, path, 680 sizeof (zo->zo_dir)); 681 } 682 break; 683 case 'V': 684 zo->zo_verbose++; 685 break; 686 case 'E': 687 zo->zo_init = 0; 688 break; 689 case 'T': 690 zo->zo_time = value; 691 break; 692 case 'P': 693 zo->zo_passtime = MAX(1, value); 694 break; 695 case 'F': 696 zo->zo_maxloops = MAX(1, value); 697 break; 698 case 'B': 699 (void) strlcpy(altdir, optarg, sizeof (altdir)); 700 break; 701 case 'h': 702 usage(B_TRUE); 703 break; 704 case '?': 705 default: 706 usage(B_FALSE); 707 break; 708 } 709 } 710 711 zo->zo_raidz_parity = MIN(zo->zo_raidz_parity, zo->zo_raidz - 1); 712 713 zo->zo_vdevtime = 714 (zo->zo_vdevs > 0 ? zo->zo_time * NANOSEC / zo->zo_vdevs : 715 UINT64_MAX >> 2); 716 717 if (strlen(altdir) > 0) { 718 char *cmd; 719 char *realaltdir; 720 char *bin; 721 char *ztest; 722 char *isa; 723 int isalen; 724 725 cmd = umem_alloc(MAXPATHLEN, UMEM_NOFAIL); 726 realaltdir = umem_alloc(MAXPATHLEN, UMEM_NOFAIL); 727 728 VERIFY(NULL != realpath(getexecname(), cmd)); 729 if (0 != access(altdir, F_OK)) { 730 ztest_dump_core = B_FALSE; 731 fatal(B_TRUE, "invalid alternate ztest path: %s", 732 altdir); 733 } 734 VERIFY(NULL != realpath(altdir, realaltdir)); 735 736 /* 737 * 'cmd' should be of the form "<anything>/usr/bin/<isa>/ztest". 738 * We want to extract <isa> to determine if we should use 739 * 32 or 64 bit binaries. 740 */ 741 bin = strstr(cmd, "/usr/bin/"); 742 ztest = strstr(bin, "/ztest"); 743 isa = bin + 9; 744 isalen = ztest - isa; 745 (void) snprintf(zo->zo_alt_ztest, sizeof (zo->zo_alt_ztest), 746 "%s/usr/bin/%.*s/ztest", realaltdir, isalen, isa); 747 (void) snprintf(zo->zo_alt_libpath, sizeof (zo->zo_alt_libpath), 748 "%s/usr/lib/%.*s", realaltdir, isalen, isa); 749 750 if (0 != access(zo->zo_alt_ztest, X_OK)) { 751 ztest_dump_core = B_FALSE; 752 fatal(B_TRUE, "invalid alternate ztest: %s", 753 zo->zo_alt_ztest); 754 } else if (0 != access(zo->zo_alt_libpath, X_OK)) { 755 ztest_dump_core = B_FALSE; 756 fatal(B_TRUE, "invalid alternate lib directory %s", 757 zo->zo_alt_libpath); 758 } 759 760 umem_free(cmd, MAXPATHLEN); 761 umem_free(realaltdir, MAXPATHLEN); 762 } 763 } 764 765 static void 766 ztest_kill(ztest_shared_t *zs) 767 { 768 zs->zs_alloc = metaslab_class_get_alloc(spa_normal_class(ztest_spa)); 769 zs->zs_space = metaslab_class_get_space(spa_normal_class(ztest_spa)); 770 771 /* 772 * Before we kill off ztest, make sure that the config is updated. 773 * See comment above spa_config_sync(). 774 */ 775 mutex_enter(&spa_namespace_lock); 776 spa_config_sync(ztest_spa, B_FALSE, B_FALSE); 777 mutex_exit(&spa_namespace_lock); 778 779 zfs_dbgmsg_print(FTAG); 780 (void) kill(getpid(), SIGKILL); 781 } 782 783 static uint64_t 784 ztest_random(uint64_t range) 785 { 786 uint64_t r; 787 788 ASSERT3S(ztest_fd_rand, >=, 0); 789 790 if (range == 0) 791 return (0); 792 793 if (read(ztest_fd_rand, &r, sizeof (r)) != sizeof (r)) 794 fatal(1, "short read from /dev/urandom"); 795 796 return (r % range); 797 } 798 799 /* ARGSUSED */ 800 static void 801 ztest_record_enospc(const char *s) 802 { 803 ztest_shared->zs_enospc_count++; 804 } 805 806 static uint64_t 807 ztest_get_ashift(void) 808 { 809 if (ztest_opts.zo_ashift == 0) 810 return (SPA_MINBLOCKSHIFT + ztest_random(3)); 811 return (ztest_opts.zo_ashift); 812 } 813 814 static nvlist_t * 815 make_vdev_file(char *path, char *aux, char *pool, size_t size, uint64_t ashift) 816 { 817 char pathbuf[MAXPATHLEN]; 818 uint64_t vdev; 819 nvlist_t *file; 820 821 if (ashift == 0) 822 ashift = ztest_get_ashift(); 823 824 if (path == NULL) { 825 path = pathbuf; 826 827 if (aux != NULL) { 828 vdev = ztest_shared->zs_vdev_aux; 829 (void) snprintf(path, sizeof (pathbuf), 830 ztest_aux_template, ztest_opts.zo_dir, 831 pool == NULL ? ztest_opts.zo_pool : pool, 832 aux, vdev); 833 } else { 834 vdev = ztest_shared->zs_vdev_next_leaf++; 835 (void) snprintf(path, sizeof (pathbuf), 836 ztest_dev_template, ztest_opts.zo_dir, 837 pool == NULL ? ztest_opts.zo_pool : pool, vdev); 838 } 839 } 840 841 if (size != 0) { 842 int fd = open(path, O_RDWR | O_CREAT | O_TRUNC, 0666); 843 if (fd == -1) 844 fatal(1, "can't open %s", path); 845 if (ftruncate(fd, size) != 0) 846 fatal(1, "can't ftruncate %s", path); 847 (void) close(fd); 848 } 849 850 VERIFY(nvlist_alloc(&file, NV_UNIQUE_NAME, 0) == 0); 851 VERIFY(nvlist_add_string(file, ZPOOL_CONFIG_TYPE, VDEV_TYPE_FILE) == 0); 852 VERIFY(nvlist_add_string(file, ZPOOL_CONFIG_PATH, path) == 0); 853 VERIFY(nvlist_add_uint64(file, ZPOOL_CONFIG_ASHIFT, ashift) == 0); 854 855 return (file); 856 } 857 858 static nvlist_t * 859 make_vdev_raidz(char *path, char *aux, char *pool, size_t size, 860 uint64_t ashift, int r) 861 { 862 nvlist_t *raidz, **child; 863 int c; 864 865 if (r < 2) 866 return (make_vdev_file(path, aux, pool, size, ashift)); 867 child = umem_alloc(r * sizeof (nvlist_t *), UMEM_NOFAIL); 868 869 for (c = 0; c < r; c++) 870 child[c] = make_vdev_file(path, aux, pool, size, ashift); 871 872 VERIFY(nvlist_alloc(&raidz, NV_UNIQUE_NAME, 0) == 0); 873 VERIFY(nvlist_add_string(raidz, ZPOOL_CONFIG_TYPE, 874 VDEV_TYPE_RAIDZ) == 0); 875 VERIFY(nvlist_add_uint64(raidz, ZPOOL_CONFIG_NPARITY, 876 ztest_opts.zo_raidz_parity) == 0); 877 VERIFY(nvlist_add_nvlist_array(raidz, ZPOOL_CONFIG_CHILDREN, 878 child, r) == 0); 879 880 for (c = 0; c < r; c++) 881 nvlist_free(child[c]); 882 883 umem_free(child, r * sizeof (nvlist_t *)); 884 885 return (raidz); 886 } 887 888 static nvlist_t * 889 make_vdev_mirror(char *path, char *aux, char *pool, size_t size, 890 uint64_t ashift, int r, int m) 891 { 892 nvlist_t *mirror, **child; 893 int c; 894 895 if (m < 1) 896 return (make_vdev_raidz(path, aux, pool, size, ashift, r)); 897 898 child = umem_alloc(m * sizeof (nvlist_t *), UMEM_NOFAIL); 899 900 for (c = 0; c < m; c++) 901 child[c] = make_vdev_raidz(path, aux, pool, size, ashift, r); 902 903 VERIFY(nvlist_alloc(&mirror, NV_UNIQUE_NAME, 0) == 0); 904 VERIFY(nvlist_add_string(mirror, ZPOOL_CONFIG_TYPE, 905 VDEV_TYPE_MIRROR) == 0); 906 VERIFY(nvlist_add_nvlist_array(mirror, ZPOOL_CONFIG_CHILDREN, 907 child, m) == 0); 908 909 for (c = 0; c < m; c++) 910 nvlist_free(child[c]); 911 912 umem_free(child, m * sizeof (nvlist_t *)); 913 914 return (mirror); 915 } 916 917 static nvlist_t * 918 make_vdev_root(char *path, char *aux, char *pool, size_t size, uint64_t ashift, 919 int log, int r, int m, int t) 920 { 921 nvlist_t *root, **child; 922 int c; 923 924 ASSERT(t > 0); 925 926 child = umem_alloc(t * sizeof (nvlist_t *), UMEM_NOFAIL); 927 928 for (c = 0; c < t; c++) { 929 child[c] = make_vdev_mirror(path, aux, pool, size, ashift, 930 r, m); 931 VERIFY(nvlist_add_uint64(child[c], ZPOOL_CONFIG_IS_LOG, 932 log) == 0); 933 } 934 935 VERIFY(nvlist_alloc(&root, NV_UNIQUE_NAME, 0) == 0); 936 VERIFY(nvlist_add_string(root, ZPOOL_CONFIG_TYPE, VDEV_TYPE_ROOT) == 0); 937 VERIFY(nvlist_add_nvlist_array(root, aux ? aux : ZPOOL_CONFIG_CHILDREN, 938 child, t) == 0); 939 940 for (c = 0; c < t; c++) 941 nvlist_free(child[c]); 942 943 umem_free(child, t * sizeof (nvlist_t *)); 944 945 return (root); 946 } 947 948 /* 949 * Find a random spa version. Returns back a random spa version in the 950 * range [initial_version, SPA_VERSION_FEATURES]. 951 */ 952 static uint64_t 953 ztest_random_spa_version(uint64_t initial_version) 954 { 955 uint64_t version = initial_version; 956 957 if (version <= SPA_VERSION_BEFORE_FEATURES) { 958 version = version + 959 ztest_random(SPA_VERSION_BEFORE_FEATURES - version + 1); 960 } 961 962 if (version > SPA_VERSION_BEFORE_FEATURES) 963 version = SPA_VERSION_FEATURES; 964 965 ASSERT(SPA_VERSION_IS_SUPPORTED(version)); 966 return (version); 967 } 968 969 static int 970 ztest_random_blocksize(void) 971 { 972 return (1 << (SPA_MINBLOCKSHIFT + 973 ztest_random(SPA_MAXBLOCKSHIFT - SPA_MINBLOCKSHIFT + 1))); 974 } 975 976 static int 977 ztest_random_ibshift(void) 978 { 979 return (DN_MIN_INDBLKSHIFT + 980 ztest_random(DN_MAX_INDBLKSHIFT - DN_MIN_INDBLKSHIFT + 1)); 981 } 982 983 static uint64_t 984 ztest_random_vdev_top(spa_t *spa, boolean_t log_ok) 985 { 986 uint64_t top; 987 vdev_t *rvd = spa->spa_root_vdev; 988 vdev_t *tvd; 989 990 ASSERT(spa_config_held(spa, SCL_ALL, RW_READER) != 0); 991 992 do { 993 top = ztest_random(rvd->vdev_children); 994 tvd = rvd->vdev_child[top]; 995 } while (tvd->vdev_ishole || (tvd->vdev_islog && !log_ok) || 996 tvd->vdev_mg == NULL || tvd->vdev_mg->mg_class == NULL); 997 998 return (top); 999 } 1000 1001 static uint64_t 1002 ztest_random_dsl_prop(zfs_prop_t prop) 1003 { 1004 uint64_t value; 1005 1006 do { 1007 value = zfs_prop_random_value(prop, ztest_random(-1ULL)); 1008 } while (prop == ZFS_PROP_CHECKSUM && value == ZIO_CHECKSUM_OFF); 1009 1010 return (value); 1011 } 1012 1013 static int 1014 ztest_dsl_prop_set_uint64(char *osname, zfs_prop_t prop, uint64_t value, 1015 boolean_t inherit) 1016 { 1017 const char *propname = zfs_prop_to_name(prop); 1018 const char *valname; 1019 char setpoint[MAXPATHLEN]; 1020 uint64_t curval; 1021 int error; 1022 1023 error = dsl_prop_set_int(osname, propname, 1024 (inherit ? ZPROP_SRC_NONE : ZPROP_SRC_LOCAL), value); 1025 1026 if (error == ENOSPC) { 1027 ztest_record_enospc(FTAG); 1028 return (error); 1029 } 1030 ASSERT0(error); 1031 1032 VERIFY0(dsl_prop_get_integer(osname, propname, &curval, setpoint)); 1033 1034 if (ztest_opts.zo_verbose >= 6) { 1035 VERIFY(zfs_prop_index_to_string(prop, curval, &valname) == 0); 1036 (void) printf("%s %s = %s at '%s'\n", 1037 osname, propname, valname, setpoint); 1038 } 1039 1040 return (error); 1041 } 1042 1043 static int 1044 ztest_spa_prop_set_uint64(zpool_prop_t prop, uint64_t value) 1045 { 1046 spa_t *spa = ztest_spa; 1047 nvlist_t *props = NULL; 1048 int error; 1049 1050 VERIFY(nvlist_alloc(&props, NV_UNIQUE_NAME, 0) == 0); 1051 VERIFY(nvlist_add_uint64(props, zpool_prop_to_name(prop), value) == 0); 1052 1053 error = spa_prop_set(spa, props); 1054 1055 nvlist_free(props); 1056 1057 if (error == ENOSPC) { 1058 ztest_record_enospc(FTAG); 1059 return (error); 1060 } 1061 ASSERT0(error); 1062 1063 return (error); 1064 } 1065 1066 static void 1067 ztest_rll_init(rll_t *rll) 1068 { 1069 rll->rll_writer = NULL; 1070 rll->rll_readers = 0; 1071 VERIFY(_mutex_init(&rll->rll_lock, USYNC_THREAD, NULL) == 0); 1072 VERIFY(cond_init(&rll->rll_cv, USYNC_THREAD, NULL) == 0); 1073 } 1074 1075 static void 1076 ztest_rll_destroy(rll_t *rll) 1077 { 1078 ASSERT(rll->rll_writer == NULL); 1079 ASSERT(rll->rll_readers == 0); 1080 VERIFY(_mutex_destroy(&rll->rll_lock) == 0); 1081 VERIFY(cond_destroy(&rll->rll_cv) == 0); 1082 } 1083 1084 static void 1085 ztest_rll_lock(rll_t *rll, rl_type_t type) 1086 { 1087 VERIFY(mutex_lock(&rll->rll_lock) == 0); 1088 1089 if (type == RL_READER) { 1090 while (rll->rll_writer != NULL) 1091 (void) cond_wait(&rll->rll_cv, &rll->rll_lock); 1092 rll->rll_readers++; 1093 } else { 1094 while (rll->rll_writer != NULL || rll->rll_readers) 1095 (void) cond_wait(&rll->rll_cv, &rll->rll_lock); 1096 rll->rll_writer = curthread; 1097 } 1098 1099 VERIFY(mutex_unlock(&rll->rll_lock) == 0); 1100 } 1101 1102 static void 1103 ztest_rll_unlock(rll_t *rll) 1104 { 1105 VERIFY(mutex_lock(&rll->rll_lock) == 0); 1106 1107 if (rll->rll_writer) { 1108 ASSERT(rll->rll_readers == 0); 1109 rll->rll_writer = NULL; 1110 } else { 1111 ASSERT(rll->rll_readers != 0); 1112 ASSERT(rll->rll_writer == NULL); 1113 rll->rll_readers--; 1114 } 1115 1116 if (rll->rll_writer == NULL && rll->rll_readers == 0) 1117 VERIFY(cond_broadcast(&rll->rll_cv) == 0); 1118 1119 VERIFY(mutex_unlock(&rll->rll_lock) == 0); 1120 } 1121 1122 static void 1123 ztest_object_lock(ztest_ds_t *zd, uint64_t object, rl_type_t type) 1124 { 1125 rll_t *rll = &zd->zd_object_lock[object & (ZTEST_OBJECT_LOCKS - 1)]; 1126 1127 ztest_rll_lock(rll, type); 1128 } 1129 1130 static void 1131 ztest_object_unlock(ztest_ds_t *zd, uint64_t object) 1132 { 1133 rll_t *rll = &zd->zd_object_lock[object & (ZTEST_OBJECT_LOCKS - 1)]; 1134 1135 ztest_rll_unlock(rll); 1136 } 1137 1138 static rl_t * 1139 ztest_range_lock(ztest_ds_t *zd, uint64_t object, uint64_t offset, 1140 uint64_t size, rl_type_t type) 1141 { 1142 uint64_t hash = object ^ (offset % (ZTEST_RANGE_LOCKS + 1)); 1143 rll_t *rll = &zd->zd_range_lock[hash & (ZTEST_RANGE_LOCKS - 1)]; 1144 rl_t *rl; 1145 1146 rl = umem_alloc(sizeof (*rl), UMEM_NOFAIL); 1147 rl->rl_object = object; 1148 rl->rl_offset = offset; 1149 rl->rl_size = size; 1150 rl->rl_lock = rll; 1151 1152 ztest_rll_lock(rll, type); 1153 1154 return (rl); 1155 } 1156 1157 static void 1158 ztest_range_unlock(rl_t *rl) 1159 { 1160 rll_t *rll = rl->rl_lock; 1161 1162 ztest_rll_unlock(rll); 1163 1164 umem_free(rl, sizeof (*rl)); 1165 } 1166 1167 static void 1168 ztest_zd_init(ztest_ds_t *zd, ztest_shared_ds_t *szd, objset_t *os) 1169 { 1170 zd->zd_os = os; 1171 zd->zd_zilog = dmu_objset_zil(os); 1172 zd->zd_shared = szd; 1173 dmu_objset_name(os, zd->zd_name); 1174 1175 if (zd->zd_shared != NULL) 1176 zd->zd_shared->zd_seq = 0; 1177 1178 VERIFY(rwlock_init(&zd->zd_zilog_lock, USYNC_THREAD, NULL) == 0); 1179 VERIFY(_mutex_init(&zd->zd_dirobj_lock, USYNC_THREAD, NULL) == 0); 1180 1181 for (int l = 0; l < ZTEST_OBJECT_LOCKS; l++) 1182 ztest_rll_init(&zd->zd_object_lock[l]); 1183 1184 for (int l = 0; l < ZTEST_RANGE_LOCKS; l++) 1185 ztest_rll_init(&zd->zd_range_lock[l]); 1186 } 1187 1188 static void 1189 ztest_zd_fini(ztest_ds_t *zd) 1190 { 1191 VERIFY(_mutex_destroy(&zd->zd_dirobj_lock) == 0); 1192 1193 for (int l = 0; l < ZTEST_OBJECT_LOCKS; l++) 1194 ztest_rll_destroy(&zd->zd_object_lock[l]); 1195 1196 for (int l = 0; l < ZTEST_RANGE_LOCKS; l++) 1197 ztest_rll_destroy(&zd->zd_range_lock[l]); 1198 } 1199 1200 #define TXG_MIGHTWAIT (ztest_random(10) == 0 ? TXG_NOWAIT : TXG_WAIT) 1201 1202 static uint64_t 1203 ztest_tx_assign(dmu_tx_t *tx, uint64_t txg_how, const char *tag) 1204 { 1205 uint64_t txg; 1206 int error; 1207 1208 /* 1209 * Attempt to assign tx to some transaction group. 1210 */ 1211 error = dmu_tx_assign(tx, txg_how); 1212 if (error) { 1213 if (error == ERESTART) { 1214 ASSERT(txg_how == TXG_NOWAIT); 1215 dmu_tx_wait(tx); 1216 } else { 1217 ASSERT3U(error, ==, ENOSPC); 1218 ztest_record_enospc(tag); 1219 } 1220 dmu_tx_abort(tx); 1221 return (0); 1222 } 1223 txg = dmu_tx_get_txg(tx); 1224 ASSERT(txg != 0); 1225 return (txg); 1226 } 1227 1228 static void 1229 ztest_pattern_set(void *buf, uint64_t size, uint64_t value) 1230 { 1231 uint64_t *ip = buf; 1232 uint64_t *ip_end = (uint64_t *)((uintptr_t)buf + (uintptr_t)size); 1233 1234 while (ip < ip_end) 1235 *ip++ = value; 1236 } 1237 1238 static boolean_t 1239 ztest_pattern_match(void *buf, uint64_t size, uint64_t value) 1240 { 1241 uint64_t *ip = buf; 1242 uint64_t *ip_end = (uint64_t *)((uintptr_t)buf + (uintptr_t)size); 1243 uint64_t diff = 0; 1244 1245 while (ip < ip_end) 1246 diff |= (value - *ip++); 1247 1248 return (diff == 0); 1249 } 1250 1251 static void 1252 ztest_bt_generate(ztest_block_tag_t *bt, objset_t *os, uint64_t object, 1253 uint64_t offset, uint64_t gen, uint64_t txg, uint64_t crtxg) 1254 { 1255 bt->bt_magic = BT_MAGIC; 1256 bt->bt_objset = dmu_objset_id(os); 1257 bt->bt_object = object; 1258 bt->bt_offset = offset; 1259 bt->bt_gen = gen; 1260 bt->bt_txg = txg; 1261 bt->bt_crtxg = crtxg; 1262 } 1263 1264 static void 1265 ztest_bt_verify(ztest_block_tag_t *bt, objset_t *os, uint64_t object, 1266 uint64_t offset, uint64_t gen, uint64_t txg, uint64_t crtxg) 1267 { 1268 ASSERT(bt->bt_magic == BT_MAGIC); 1269 ASSERT(bt->bt_objset == dmu_objset_id(os)); 1270 ASSERT(bt->bt_object == object); 1271 ASSERT(bt->bt_offset == offset); 1272 ASSERT(bt->bt_gen <= gen); 1273 ASSERT(bt->bt_txg <= txg); 1274 ASSERT(bt->bt_crtxg == crtxg); 1275 } 1276 1277 static ztest_block_tag_t * 1278 ztest_bt_bonus(dmu_buf_t *db) 1279 { 1280 dmu_object_info_t doi; 1281 ztest_block_tag_t *bt; 1282 1283 dmu_object_info_from_db(db, &doi); 1284 ASSERT3U(doi.doi_bonus_size, <=, db->db_size); 1285 ASSERT3U(doi.doi_bonus_size, >=, sizeof (*bt)); 1286 bt = (void *)((char *)db->db_data + doi.doi_bonus_size - sizeof (*bt)); 1287 1288 return (bt); 1289 } 1290 1291 /* 1292 * ZIL logging ops 1293 */ 1294 1295 #define lrz_type lr_mode 1296 #define lrz_blocksize lr_uid 1297 #define lrz_ibshift lr_gid 1298 #define lrz_bonustype lr_rdev 1299 #define lrz_bonuslen lr_crtime[1] 1300 1301 static void 1302 ztest_log_create(ztest_ds_t *zd, dmu_tx_t *tx, lr_create_t *lr) 1303 { 1304 char *name = (void *)(lr + 1); /* name follows lr */ 1305 size_t namesize = strlen(name) + 1; 1306 itx_t *itx; 1307 1308 if (zil_replaying(zd->zd_zilog, tx)) 1309 return; 1310 1311 itx = zil_itx_create(TX_CREATE, sizeof (*lr) + namesize); 1312 bcopy(&lr->lr_common + 1, &itx->itx_lr + 1, 1313 sizeof (*lr) + namesize - sizeof (lr_t)); 1314 1315 zil_itx_assign(zd->zd_zilog, itx, tx); 1316 } 1317 1318 static void 1319 ztest_log_remove(ztest_ds_t *zd, dmu_tx_t *tx, lr_remove_t *lr, uint64_t object) 1320 { 1321 char *name = (void *)(lr + 1); /* name follows lr */ 1322 size_t namesize = strlen(name) + 1; 1323 itx_t *itx; 1324 1325 if (zil_replaying(zd->zd_zilog, tx)) 1326 return; 1327 1328 itx = zil_itx_create(TX_REMOVE, sizeof (*lr) + namesize); 1329 bcopy(&lr->lr_common + 1, &itx->itx_lr + 1, 1330 sizeof (*lr) + namesize - sizeof (lr_t)); 1331 1332 itx->itx_oid = object; 1333 zil_itx_assign(zd->zd_zilog, itx, tx); 1334 } 1335 1336 static void 1337 ztest_log_write(ztest_ds_t *zd, dmu_tx_t *tx, lr_write_t *lr) 1338 { 1339 itx_t *itx; 1340 itx_wr_state_t write_state = ztest_random(WR_NUM_STATES); 1341 1342 if (zil_replaying(zd->zd_zilog, tx)) 1343 return; 1344 1345 if (lr->lr_length > ZIL_MAX_LOG_DATA) 1346 write_state = WR_INDIRECT; 1347 1348 itx = zil_itx_create(TX_WRITE, 1349 sizeof (*lr) + (write_state == WR_COPIED ? lr->lr_length : 0)); 1350 1351 if (write_state == WR_COPIED && 1352 dmu_read(zd->zd_os, lr->lr_foid, lr->lr_offset, lr->lr_length, 1353 ((lr_write_t *)&itx->itx_lr) + 1, DMU_READ_NO_PREFETCH) != 0) { 1354 zil_itx_destroy(itx); 1355 itx = zil_itx_create(TX_WRITE, sizeof (*lr)); 1356 write_state = WR_NEED_COPY; 1357 } 1358 itx->itx_private = zd; 1359 itx->itx_wr_state = write_state; 1360 itx->itx_sync = (ztest_random(8) == 0); 1361 itx->itx_sod += (write_state == WR_NEED_COPY ? lr->lr_length : 0); 1362 1363 bcopy(&lr->lr_common + 1, &itx->itx_lr + 1, 1364 sizeof (*lr) - sizeof (lr_t)); 1365 1366 zil_itx_assign(zd->zd_zilog, itx, tx); 1367 } 1368 1369 static void 1370 ztest_log_truncate(ztest_ds_t *zd, dmu_tx_t *tx, lr_truncate_t *lr) 1371 { 1372 itx_t *itx; 1373 1374 if (zil_replaying(zd->zd_zilog, tx)) 1375 return; 1376 1377 itx = zil_itx_create(TX_TRUNCATE, sizeof (*lr)); 1378 bcopy(&lr->lr_common + 1, &itx->itx_lr + 1, 1379 sizeof (*lr) - sizeof (lr_t)); 1380 1381 itx->itx_sync = B_FALSE; 1382 zil_itx_assign(zd->zd_zilog, itx, tx); 1383 } 1384 1385 static void 1386 ztest_log_setattr(ztest_ds_t *zd, dmu_tx_t *tx, lr_setattr_t *lr) 1387 { 1388 itx_t *itx; 1389 1390 if (zil_replaying(zd->zd_zilog, tx)) 1391 return; 1392 1393 itx = zil_itx_create(TX_SETATTR, sizeof (*lr)); 1394 bcopy(&lr->lr_common + 1, &itx->itx_lr + 1, 1395 sizeof (*lr) - sizeof (lr_t)); 1396 1397 itx->itx_sync = B_FALSE; 1398 zil_itx_assign(zd->zd_zilog, itx, tx); 1399 } 1400 1401 /* 1402 * ZIL replay ops 1403 */ 1404 static int 1405 ztest_replay_create(ztest_ds_t *zd, lr_create_t *lr, boolean_t byteswap) 1406 { 1407 char *name = (void *)(lr + 1); /* name follows lr */ 1408 objset_t *os = zd->zd_os; 1409 ztest_block_tag_t *bbt; 1410 dmu_buf_t *db; 1411 dmu_tx_t *tx; 1412 uint64_t txg; 1413 int error = 0; 1414 1415 if (byteswap) 1416 byteswap_uint64_array(lr, sizeof (*lr)); 1417 1418 ASSERT(lr->lr_doid == ZTEST_DIROBJ); 1419 ASSERT(name[0] != '\0'); 1420 1421 tx = dmu_tx_create(os); 1422 1423 dmu_tx_hold_zap(tx, lr->lr_doid, B_TRUE, name); 1424 1425 if (lr->lrz_type == DMU_OT_ZAP_OTHER) { 1426 dmu_tx_hold_zap(tx, DMU_NEW_OBJECT, B_TRUE, NULL); 1427 } else { 1428 dmu_tx_hold_bonus(tx, DMU_NEW_OBJECT); 1429 } 1430 1431 txg = ztest_tx_assign(tx, TXG_WAIT, FTAG); 1432 if (txg == 0) 1433 return (ENOSPC); 1434 1435 ASSERT(dmu_objset_zil(os)->zl_replay == !!lr->lr_foid); 1436 1437 if (lr->lrz_type == DMU_OT_ZAP_OTHER) { 1438 if (lr->lr_foid == 0) { 1439 lr->lr_foid = zap_create(os, 1440 lr->lrz_type, lr->lrz_bonustype, 1441 lr->lrz_bonuslen, tx); 1442 } else { 1443 error = zap_create_claim(os, lr->lr_foid, 1444 lr->lrz_type, lr->lrz_bonustype, 1445 lr->lrz_bonuslen, tx); 1446 } 1447 } else { 1448 if (lr->lr_foid == 0) { 1449 lr->lr_foid = dmu_object_alloc(os, 1450 lr->lrz_type, 0, lr->lrz_bonustype, 1451 lr->lrz_bonuslen, tx); 1452 } else { 1453 error = dmu_object_claim(os, lr->lr_foid, 1454 lr->lrz_type, 0, lr->lrz_bonustype, 1455 lr->lrz_bonuslen, tx); 1456 } 1457 } 1458 1459 if (error) { 1460 ASSERT3U(error, ==, EEXIST); 1461 ASSERT(zd->zd_zilog->zl_replay); 1462 dmu_tx_commit(tx); 1463 return (error); 1464 } 1465 1466 ASSERT(lr->lr_foid != 0); 1467 1468 if (lr->lrz_type != DMU_OT_ZAP_OTHER) 1469 VERIFY3U(0, ==, dmu_object_set_blocksize(os, lr->lr_foid, 1470 lr->lrz_blocksize, lr->lrz_ibshift, tx)); 1471 1472 VERIFY3U(0, ==, dmu_bonus_hold(os, lr->lr_foid, FTAG, &db)); 1473 bbt = ztest_bt_bonus(db); 1474 dmu_buf_will_dirty(db, tx); 1475 ztest_bt_generate(bbt, os, lr->lr_foid, -1ULL, lr->lr_gen, txg, txg); 1476 dmu_buf_rele(db, FTAG); 1477 1478 VERIFY3U(0, ==, zap_add(os, lr->lr_doid, name, sizeof (uint64_t), 1, 1479 &lr->lr_foid, tx)); 1480 1481 (void) ztest_log_create(zd, tx, lr); 1482 1483 dmu_tx_commit(tx); 1484 1485 return (0); 1486 } 1487 1488 static int 1489 ztest_replay_remove(ztest_ds_t *zd, lr_remove_t *lr, boolean_t byteswap) 1490 { 1491 char *name = (void *)(lr + 1); /* name follows lr */ 1492 objset_t *os = zd->zd_os; 1493 dmu_object_info_t doi; 1494 dmu_tx_t *tx; 1495 uint64_t object, txg; 1496 1497 if (byteswap) 1498 byteswap_uint64_array(lr, sizeof (*lr)); 1499 1500 ASSERT(lr->lr_doid == ZTEST_DIROBJ); 1501 ASSERT(name[0] != '\0'); 1502 1503 VERIFY3U(0, ==, 1504 zap_lookup(os, lr->lr_doid, name, sizeof (object), 1, &object)); 1505 ASSERT(object != 0); 1506 1507 ztest_object_lock(zd, object, RL_WRITER); 1508 1509 VERIFY3U(0, ==, dmu_object_info(os, object, &doi)); 1510 1511 tx = dmu_tx_create(os); 1512 1513 dmu_tx_hold_zap(tx, lr->lr_doid, B_FALSE, name); 1514 dmu_tx_hold_free(tx, object, 0, DMU_OBJECT_END); 1515 1516 txg = ztest_tx_assign(tx, TXG_WAIT, FTAG); 1517 if (txg == 0) { 1518 ztest_object_unlock(zd, object); 1519 return (ENOSPC); 1520 } 1521 1522 if (doi.doi_type == DMU_OT_ZAP_OTHER) { 1523 VERIFY3U(0, ==, zap_destroy(os, object, tx)); 1524 } else { 1525 VERIFY3U(0, ==, dmu_object_free(os, object, tx)); 1526 } 1527 1528 VERIFY3U(0, ==, zap_remove(os, lr->lr_doid, name, tx)); 1529 1530 (void) ztest_log_remove(zd, tx, lr, object); 1531 1532 dmu_tx_commit(tx); 1533 1534 ztest_object_unlock(zd, object); 1535 1536 return (0); 1537 } 1538 1539 static int 1540 ztest_replay_write(ztest_ds_t *zd, lr_write_t *lr, boolean_t byteswap) 1541 { 1542 objset_t *os = zd->zd_os; 1543 void *data = lr + 1; /* data follows lr */ 1544 uint64_t offset, length; 1545 ztest_block_tag_t *bt = data; 1546 ztest_block_tag_t *bbt; 1547 uint64_t gen, txg, lrtxg, crtxg; 1548 dmu_object_info_t doi; 1549 dmu_tx_t *tx; 1550 dmu_buf_t *db; 1551 arc_buf_t *abuf = NULL; 1552 rl_t *rl; 1553 1554 if (byteswap) 1555 byteswap_uint64_array(lr, sizeof (*lr)); 1556 1557 offset = lr->lr_offset; 1558 length = lr->lr_length; 1559 1560 /* If it's a dmu_sync() block, write the whole block */ 1561 if (lr->lr_common.lrc_reclen == sizeof (lr_write_t)) { 1562 uint64_t blocksize = BP_GET_LSIZE(&lr->lr_blkptr); 1563 if (length < blocksize) { 1564 offset -= offset % blocksize; 1565 length = blocksize; 1566 } 1567 } 1568 1569 if (bt->bt_magic == BSWAP_64(BT_MAGIC)) 1570 byteswap_uint64_array(bt, sizeof (*bt)); 1571 1572 if (bt->bt_magic != BT_MAGIC) 1573 bt = NULL; 1574 1575 ztest_object_lock(zd, lr->lr_foid, RL_READER); 1576 rl = ztest_range_lock(zd, lr->lr_foid, offset, length, RL_WRITER); 1577 1578 VERIFY3U(0, ==, dmu_bonus_hold(os, lr->lr_foid, FTAG, &db)); 1579 1580 dmu_object_info_from_db(db, &doi); 1581 1582 bbt = ztest_bt_bonus(db); 1583 ASSERT3U(bbt->bt_magic, ==, BT_MAGIC); 1584 gen = bbt->bt_gen; 1585 crtxg = bbt->bt_crtxg; 1586 lrtxg = lr->lr_common.lrc_txg; 1587 1588 tx = dmu_tx_create(os); 1589 1590 dmu_tx_hold_write(tx, lr->lr_foid, offset, length); 1591 1592 if (ztest_random(8) == 0 && length == doi.doi_data_block_size && 1593 P2PHASE(offset, length) == 0) 1594 abuf = dmu_request_arcbuf(db, length); 1595 1596 txg = ztest_tx_assign(tx, TXG_WAIT, FTAG); 1597 if (txg == 0) { 1598 if (abuf != NULL) 1599 dmu_return_arcbuf(abuf); 1600 dmu_buf_rele(db, FTAG); 1601 ztest_range_unlock(rl); 1602 ztest_object_unlock(zd, lr->lr_foid); 1603 return (ENOSPC); 1604 } 1605 1606 if (bt != NULL) { 1607 /* 1608 * Usually, verify the old data before writing new data -- 1609 * but not always, because we also want to verify correct 1610 * behavior when the data was not recently read into cache. 1611 */ 1612 ASSERT(offset % doi.doi_data_block_size == 0); 1613 if (ztest_random(4) != 0) { 1614 int prefetch = ztest_random(2) ? 1615 DMU_READ_PREFETCH : DMU_READ_NO_PREFETCH; 1616 ztest_block_tag_t rbt; 1617 1618 VERIFY(dmu_read(os, lr->lr_foid, offset, 1619 sizeof (rbt), &rbt, prefetch) == 0); 1620 if (rbt.bt_magic == BT_MAGIC) { 1621 ztest_bt_verify(&rbt, os, lr->lr_foid, 1622 offset, gen, txg, crtxg); 1623 } 1624 } 1625 1626 /* 1627 * Writes can appear to be newer than the bonus buffer because 1628 * the ztest_get_data() callback does a dmu_read() of the 1629 * open-context data, which may be different than the data 1630 * as it was when the write was generated. 1631 */ 1632 if (zd->zd_zilog->zl_replay) { 1633 ztest_bt_verify(bt, os, lr->lr_foid, offset, 1634 MAX(gen, bt->bt_gen), MAX(txg, lrtxg), 1635 bt->bt_crtxg); 1636 } 1637 1638 /* 1639 * Set the bt's gen/txg to the bonus buffer's gen/txg 1640 * so that all of the usual ASSERTs will work. 1641 */ 1642 ztest_bt_generate(bt, os, lr->lr_foid, offset, gen, txg, crtxg); 1643 } 1644 1645 if (abuf == NULL) { 1646 dmu_write(os, lr->lr_foid, offset, length, data, tx); 1647 } else { 1648 bcopy(data, abuf->b_data, length); 1649 dmu_assign_arcbuf(db, offset, abuf, tx); 1650 } 1651 1652 (void) ztest_log_write(zd, tx, lr); 1653 1654 dmu_buf_rele(db, FTAG); 1655 1656 dmu_tx_commit(tx); 1657 1658 ztest_range_unlock(rl); 1659 ztest_object_unlock(zd, lr->lr_foid); 1660 1661 return (0); 1662 } 1663 1664 static int 1665 ztest_replay_truncate(ztest_ds_t *zd, lr_truncate_t *lr, boolean_t byteswap) 1666 { 1667 objset_t *os = zd->zd_os; 1668 dmu_tx_t *tx; 1669 uint64_t txg; 1670 rl_t *rl; 1671 1672 if (byteswap) 1673 byteswap_uint64_array(lr, sizeof (*lr)); 1674 1675 ztest_object_lock(zd, lr->lr_foid, RL_READER); 1676 rl = ztest_range_lock(zd, lr->lr_foid, lr->lr_offset, lr->lr_length, 1677 RL_WRITER); 1678 1679 tx = dmu_tx_create(os); 1680 1681 dmu_tx_hold_free(tx, lr->lr_foid, lr->lr_offset, lr->lr_length); 1682 1683 txg = ztest_tx_assign(tx, TXG_WAIT, FTAG); 1684 if (txg == 0) { 1685 ztest_range_unlock(rl); 1686 ztest_object_unlock(zd, lr->lr_foid); 1687 return (ENOSPC); 1688 } 1689 1690 VERIFY(dmu_free_range(os, lr->lr_foid, lr->lr_offset, 1691 lr->lr_length, tx) == 0); 1692 1693 (void) ztest_log_truncate(zd, tx, lr); 1694 1695 dmu_tx_commit(tx); 1696 1697 ztest_range_unlock(rl); 1698 ztest_object_unlock(zd, lr->lr_foid); 1699 1700 return (0); 1701 } 1702 1703 static int 1704 ztest_replay_setattr(ztest_ds_t *zd, lr_setattr_t *lr, boolean_t byteswap) 1705 { 1706 objset_t *os = zd->zd_os; 1707 dmu_tx_t *tx; 1708 dmu_buf_t *db; 1709 ztest_block_tag_t *bbt; 1710 uint64_t txg, lrtxg, crtxg; 1711 1712 if (byteswap) 1713 byteswap_uint64_array(lr, sizeof (*lr)); 1714 1715 ztest_object_lock(zd, lr->lr_foid, RL_WRITER); 1716 1717 VERIFY3U(0, ==, dmu_bonus_hold(os, lr->lr_foid, FTAG, &db)); 1718 1719 tx = dmu_tx_create(os); 1720 dmu_tx_hold_bonus(tx, lr->lr_foid); 1721 1722 txg = ztest_tx_assign(tx, TXG_WAIT, FTAG); 1723 if (txg == 0) { 1724 dmu_buf_rele(db, FTAG); 1725 ztest_object_unlock(zd, lr->lr_foid); 1726 return (ENOSPC); 1727 } 1728 1729 bbt = ztest_bt_bonus(db); 1730 ASSERT3U(bbt->bt_magic, ==, BT_MAGIC); 1731 crtxg = bbt->bt_crtxg; 1732 lrtxg = lr->lr_common.lrc_txg; 1733 1734 if (zd->zd_zilog->zl_replay) { 1735 ASSERT(lr->lr_size != 0); 1736 ASSERT(lr->lr_mode != 0); 1737 ASSERT(lrtxg != 0); 1738 } else { 1739 /* 1740 * Randomly change the size and increment the generation. 1741 */ 1742 lr->lr_size = (ztest_random(db->db_size / sizeof (*bbt)) + 1) * 1743 sizeof (*bbt); 1744 lr->lr_mode = bbt->bt_gen + 1; 1745 ASSERT(lrtxg == 0); 1746 } 1747 1748 /* 1749 * Verify that the current bonus buffer is not newer than our txg. 1750 */ 1751 ztest_bt_verify(bbt, os, lr->lr_foid, -1ULL, lr->lr_mode, 1752 MAX(txg, lrtxg), crtxg); 1753 1754 dmu_buf_will_dirty(db, tx); 1755 1756 ASSERT3U(lr->lr_size, >=, sizeof (*bbt)); 1757 ASSERT3U(lr->lr_size, <=, db->db_size); 1758 VERIFY0(dmu_set_bonus(db, lr->lr_size, tx)); 1759 bbt = ztest_bt_bonus(db); 1760 1761 ztest_bt_generate(bbt, os, lr->lr_foid, -1ULL, lr->lr_mode, txg, crtxg); 1762 1763 dmu_buf_rele(db, FTAG); 1764 1765 (void) ztest_log_setattr(zd, tx, lr); 1766 1767 dmu_tx_commit(tx); 1768 1769 ztest_object_unlock(zd, lr->lr_foid); 1770 1771 return (0); 1772 } 1773 1774 zil_replay_func_t *ztest_replay_vector[TX_MAX_TYPE] = { 1775 NULL, /* 0 no such transaction type */ 1776 ztest_replay_create, /* TX_CREATE */ 1777 NULL, /* TX_MKDIR */ 1778 NULL, /* TX_MKXATTR */ 1779 NULL, /* TX_SYMLINK */ 1780 ztest_replay_remove, /* TX_REMOVE */ 1781 NULL, /* TX_RMDIR */ 1782 NULL, /* TX_LINK */ 1783 NULL, /* TX_RENAME */ 1784 ztest_replay_write, /* TX_WRITE */ 1785 ztest_replay_truncate, /* TX_TRUNCATE */ 1786 ztest_replay_setattr, /* TX_SETATTR */ 1787 NULL, /* TX_ACL */ 1788 NULL, /* TX_CREATE_ACL */ 1789 NULL, /* TX_CREATE_ATTR */ 1790 NULL, /* TX_CREATE_ACL_ATTR */ 1791 NULL, /* TX_MKDIR_ACL */ 1792 NULL, /* TX_MKDIR_ATTR */ 1793 NULL, /* TX_MKDIR_ACL_ATTR */ 1794 NULL, /* TX_WRITE2 */ 1795 }; 1796 1797 /* 1798 * ZIL get_data callbacks 1799 */ 1800 1801 static void 1802 ztest_get_done(zgd_t *zgd, int error) 1803 { 1804 ztest_ds_t *zd = zgd->zgd_private; 1805 uint64_t object = zgd->zgd_rl->rl_object; 1806 1807 if (zgd->zgd_db) 1808 dmu_buf_rele(zgd->zgd_db, zgd); 1809 1810 ztest_range_unlock(zgd->zgd_rl); 1811 ztest_object_unlock(zd, object); 1812 1813 if (error == 0 && zgd->zgd_bp) 1814 zil_add_block(zgd->zgd_zilog, zgd->zgd_bp); 1815 1816 umem_free(zgd, sizeof (*zgd)); 1817 } 1818 1819 static int 1820 ztest_get_data(void *arg, lr_write_t *lr, char *buf, zio_t *zio) 1821 { 1822 ztest_ds_t *zd = arg; 1823 objset_t *os = zd->zd_os; 1824 uint64_t object = lr->lr_foid; 1825 uint64_t offset = lr->lr_offset; 1826 uint64_t size = lr->lr_length; 1827 blkptr_t *bp = &lr->lr_blkptr; 1828 uint64_t txg = lr->lr_common.lrc_txg; 1829 uint64_t crtxg; 1830 dmu_object_info_t doi; 1831 dmu_buf_t *db; 1832 zgd_t *zgd; 1833 int error; 1834 1835 ztest_object_lock(zd, object, RL_READER); 1836 error = dmu_bonus_hold(os, object, FTAG, &db); 1837 if (error) { 1838 ztest_object_unlock(zd, object); 1839 return (error); 1840 } 1841 1842 crtxg = ztest_bt_bonus(db)->bt_crtxg; 1843 1844 if (crtxg == 0 || crtxg > txg) { 1845 dmu_buf_rele(db, FTAG); 1846 ztest_object_unlock(zd, object); 1847 return (ENOENT); 1848 } 1849 1850 dmu_object_info_from_db(db, &doi); 1851 dmu_buf_rele(db, FTAG); 1852 db = NULL; 1853 1854 zgd = umem_zalloc(sizeof (*zgd), UMEM_NOFAIL); 1855 zgd->zgd_zilog = zd->zd_zilog; 1856 zgd->zgd_private = zd; 1857 1858 if (buf != NULL) { /* immediate write */ 1859 zgd->zgd_rl = ztest_range_lock(zd, object, offset, size, 1860 RL_READER); 1861 1862 error = dmu_read(os, object, offset, size, buf, 1863 DMU_READ_NO_PREFETCH); 1864 ASSERT(error == 0); 1865 } else { 1866 size = doi.doi_data_block_size; 1867 if (ISP2(size)) { 1868 offset = P2ALIGN(offset, size); 1869 } else { 1870 ASSERT(offset < size); 1871 offset = 0; 1872 } 1873 1874 zgd->zgd_rl = ztest_range_lock(zd, object, offset, size, 1875 RL_READER); 1876 1877 error = dmu_buf_hold(os, object, offset, zgd, &db, 1878 DMU_READ_NO_PREFETCH); 1879 1880 if (error == 0) { 1881 blkptr_t *obp = dmu_buf_get_blkptr(db); 1882 if (obp) { 1883 ASSERT(BP_IS_HOLE(bp)); 1884 *bp = *obp; 1885 } 1886 1887 zgd->zgd_db = db; 1888 zgd->zgd_bp = bp; 1889 1890 ASSERT(db->db_offset == offset); 1891 ASSERT(db->db_size == size); 1892 1893 error = dmu_sync(zio, lr->lr_common.lrc_txg, 1894 ztest_get_done, zgd); 1895 1896 if (error == 0) 1897 return (0); 1898 } 1899 } 1900 1901 ztest_get_done(zgd, error); 1902 1903 return (error); 1904 } 1905 1906 static void * 1907 ztest_lr_alloc(size_t lrsize, char *name) 1908 { 1909 char *lr; 1910 size_t namesize = name ? strlen(name) + 1 : 0; 1911 1912 lr = umem_zalloc(lrsize + namesize, UMEM_NOFAIL); 1913 1914 if (name) 1915 bcopy(name, lr + lrsize, namesize); 1916 1917 return (lr); 1918 } 1919 1920 void 1921 ztest_lr_free(void *lr, size_t lrsize, char *name) 1922 { 1923 size_t namesize = name ? strlen(name) + 1 : 0; 1924 1925 umem_free(lr, lrsize + namesize); 1926 } 1927 1928 /* 1929 * Lookup a bunch of objects. Returns the number of objects not found. 1930 */ 1931 static int 1932 ztest_lookup(ztest_ds_t *zd, ztest_od_t *od, int count) 1933 { 1934 int missing = 0; 1935 int error; 1936 1937 ASSERT(_mutex_held(&zd->zd_dirobj_lock)); 1938 1939 for (int i = 0; i < count; i++, od++) { 1940 od->od_object = 0; 1941 error = zap_lookup(zd->zd_os, od->od_dir, od->od_name, 1942 sizeof (uint64_t), 1, &od->od_object); 1943 if (error) { 1944 ASSERT(error == ENOENT); 1945 ASSERT(od->od_object == 0); 1946 missing++; 1947 } else { 1948 dmu_buf_t *db; 1949 ztest_block_tag_t *bbt; 1950 dmu_object_info_t doi; 1951 1952 ASSERT(od->od_object != 0); 1953 ASSERT(missing == 0); /* there should be no gaps */ 1954 1955 ztest_object_lock(zd, od->od_object, RL_READER); 1956 VERIFY3U(0, ==, dmu_bonus_hold(zd->zd_os, 1957 od->od_object, FTAG, &db)); 1958 dmu_object_info_from_db(db, &doi); 1959 bbt = ztest_bt_bonus(db); 1960 ASSERT3U(bbt->bt_magic, ==, BT_MAGIC); 1961 od->od_type = doi.doi_type; 1962 od->od_blocksize = doi.doi_data_block_size; 1963 od->od_gen = bbt->bt_gen; 1964 dmu_buf_rele(db, FTAG); 1965 ztest_object_unlock(zd, od->od_object); 1966 } 1967 } 1968 1969 return (missing); 1970 } 1971 1972 static int 1973 ztest_create(ztest_ds_t *zd, ztest_od_t *od, int count) 1974 { 1975 int missing = 0; 1976 1977 ASSERT(_mutex_held(&zd->zd_dirobj_lock)); 1978 1979 for (int i = 0; i < count; i++, od++) { 1980 if (missing) { 1981 od->od_object = 0; 1982 missing++; 1983 continue; 1984 } 1985 1986 lr_create_t *lr = ztest_lr_alloc(sizeof (*lr), od->od_name); 1987 1988 lr->lr_doid = od->od_dir; 1989 lr->lr_foid = 0; /* 0 to allocate, > 0 to claim */ 1990 lr->lrz_type = od->od_crtype; 1991 lr->lrz_blocksize = od->od_crblocksize; 1992 lr->lrz_ibshift = ztest_random_ibshift(); 1993 lr->lrz_bonustype = DMU_OT_UINT64_OTHER; 1994 lr->lrz_bonuslen = dmu_bonus_max(); 1995 lr->lr_gen = od->od_crgen; 1996 lr->lr_crtime[0] = time(NULL); 1997 1998 if (ztest_replay_create(zd, lr, B_FALSE) != 0) { 1999 ASSERT(missing == 0); 2000 od->od_object = 0; 2001 missing++; 2002 } else { 2003 od->od_object = lr->lr_foid; 2004 od->od_type = od->od_crtype; 2005 od->od_blocksize = od->od_crblocksize; 2006 od->od_gen = od->od_crgen; 2007 ASSERT(od->od_object != 0); 2008 } 2009 2010 ztest_lr_free(lr, sizeof (*lr), od->od_name); 2011 } 2012 2013 return (missing); 2014 } 2015 2016 static int 2017 ztest_remove(ztest_ds_t *zd, ztest_od_t *od, int count) 2018 { 2019 int missing = 0; 2020 int error; 2021 2022 ASSERT(_mutex_held(&zd->zd_dirobj_lock)); 2023 2024 od += count - 1; 2025 2026 for (int i = count - 1; i >= 0; i--, od--) { 2027 if (missing) { 2028 missing++; 2029 continue; 2030 } 2031 2032 /* 2033 * No object was found. 2034 */ 2035 if (od->od_object == 0) 2036 continue; 2037 2038 lr_remove_t *lr = ztest_lr_alloc(sizeof (*lr), od->od_name); 2039 2040 lr->lr_doid = od->od_dir; 2041 2042 if ((error = ztest_replay_remove(zd, lr, B_FALSE)) != 0) { 2043 ASSERT3U(error, ==, ENOSPC); 2044 missing++; 2045 } else { 2046 od->od_object = 0; 2047 } 2048 ztest_lr_free(lr, sizeof (*lr), od->od_name); 2049 } 2050 2051 return (missing); 2052 } 2053 2054 static int 2055 ztest_write(ztest_ds_t *zd, uint64_t object, uint64_t offset, uint64_t size, 2056 void *data) 2057 { 2058 lr_write_t *lr; 2059 int error; 2060 2061 lr = ztest_lr_alloc(sizeof (*lr) + size, NULL); 2062 2063 lr->lr_foid = object; 2064 lr->lr_offset = offset; 2065 lr->lr_length = size; 2066 lr->lr_blkoff = 0; 2067 BP_ZERO(&lr->lr_blkptr); 2068 2069 bcopy(data, lr + 1, size); 2070 2071 error = ztest_replay_write(zd, lr, B_FALSE); 2072 2073 ztest_lr_free(lr, sizeof (*lr) + size, NULL); 2074 2075 return (error); 2076 } 2077 2078 static int 2079 ztest_truncate(ztest_ds_t *zd, uint64_t object, uint64_t offset, uint64_t size) 2080 { 2081 lr_truncate_t *lr; 2082 int error; 2083 2084 lr = ztest_lr_alloc(sizeof (*lr), NULL); 2085 2086 lr->lr_foid = object; 2087 lr->lr_offset = offset; 2088 lr->lr_length = size; 2089 2090 error = ztest_replay_truncate(zd, lr, B_FALSE); 2091 2092 ztest_lr_free(lr, sizeof (*lr), NULL); 2093 2094 return (error); 2095 } 2096 2097 static int 2098 ztest_setattr(ztest_ds_t *zd, uint64_t object) 2099 { 2100 lr_setattr_t *lr; 2101 int error; 2102 2103 lr = ztest_lr_alloc(sizeof (*lr), NULL); 2104 2105 lr->lr_foid = object; 2106 lr->lr_size = 0; 2107 lr->lr_mode = 0; 2108 2109 error = ztest_replay_setattr(zd, lr, B_FALSE); 2110 2111 ztest_lr_free(lr, sizeof (*lr), NULL); 2112 2113 return (error); 2114 } 2115 2116 static void 2117 ztest_prealloc(ztest_ds_t *zd, uint64_t object, uint64_t offset, uint64_t size) 2118 { 2119 objset_t *os = zd->zd_os; 2120 dmu_tx_t *tx; 2121 uint64_t txg; 2122 rl_t *rl; 2123 2124 txg_wait_synced(dmu_objset_pool(os), 0); 2125 2126 ztest_object_lock(zd, object, RL_READER); 2127 rl = ztest_range_lock(zd, object, offset, size, RL_WRITER); 2128 2129 tx = dmu_tx_create(os); 2130 2131 dmu_tx_hold_write(tx, object, offset, size); 2132 2133 txg = ztest_tx_assign(tx, TXG_WAIT, FTAG); 2134 2135 if (txg != 0) { 2136 dmu_prealloc(os, object, offset, size, tx); 2137 dmu_tx_commit(tx); 2138 txg_wait_synced(dmu_objset_pool(os), txg); 2139 } else { 2140 (void) dmu_free_long_range(os, object, offset, size); 2141 } 2142 2143 ztest_range_unlock(rl); 2144 ztest_object_unlock(zd, object); 2145 } 2146 2147 static void 2148 ztest_io(ztest_ds_t *zd, uint64_t object, uint64_t offset) 2149 { 2150 int err; 2151 ztest_block_tag_t wbt; 2152 dmu_object_info_t doi; 2153 enum ztest_io_type io_type; 2154 uint64_t blocksize; 2155 void *data; 2156 2157 VERIFY(dmu_object_info(zd->zd_os, object, &doi) == 0); 2158 blocksize = doi.doi_data_block_size; 2159 data = umem_alloc(blocksize, UMEM_NOFAIL); 2160 2161 /* 2162 * Pick an i/o type at random, biased toward writing block tags. 2163 */ 2164 io_type = ztest_random(ZTEST_IO_TYPES); 2165 if (ztest_random(2) == 0) 2166 io_type = ZTEST_IO_WRITE_TAG; 2167 2168 (void) rw_rdlock(&zd->zd_zilog_lock); 2169 2170 switch (io_type) { 2171 2172 case ZTEST_IO_WRITE_TAG: 2173 ztest_bt_generate(&wbt, zd->zd_os, object, offset, 0, 0, 0); 2174 (void) ztest_write(zd, object, offset, sizeof (wbt), &wbt); 2175 break; 2176 2177 case ZTEST_IO_WRITE_PATTERN: 2178 (void) memset(data, 'a' + (object + offset) % 5, blocksize); 2179 if (ztest_random(2) == 0) { 2180 /* 2181 * Induce fletcher2 collisions to ensure that 2182 * zio_ddt_collision() detects and resolves them 2183 * when using fletcher2-verify for deduplication. 2184 */ 2185 ((uint64_t *)data)[0] ^= 1ULL << 63; 2186 ((uint64_t *)data)[4] ^= 1ULL << 63; 2187 } 2188 (void) ztest_write(zd, object, offset, blocksize, data); 2189 break; 2190 2191 case ZTEST_IO_WRITE_ZEROES: 2192 bzero(data, blocksize); 2193 (void) ztest_write(zd, object, offset, blocksize, data); 2194 break; 2195 2196 case ZTEST_IO_TRUNCATE: 2197 (void) ztest_truncate(zd, object, offset, blocksize); 2198 break; 2199 2200 case ZTEST_IO_SETATTR: 2201 (void) ztest_setattr(zd, object); 2202 break; 2203 2204 case ZTEST_IO_REWRITE: 2205 (void) rw_rdlock(&ztest_name_lock); 2206 err = ztest_dsl_prop_set_uint64(zd->zd_name, 2207 ZFS_PROP_CHECKSUM, spa_dedup_checksum(ztest_spa), 2208 B_FALSE); 2209 VERIFY(err == 0 || err == ENOSPC); 2210 err = ztest_dsl_prop_set_uint64(zd->zd_name, 2211 ZFS_PROP_COMPRESSION, 2212 ztest_random_dsl_prop(ZFS_PROP_COMPRESSION), 2213 B_FALSE); 2214 VERIFY(err == 0 || err == ENOSPC); 2215 (void) rw_unlock(&ztest_name_lock); 2216 2217 VERIFY0(dmu_read(zd->zd_os, object, offset, blocksize, data, 2218 DMU_READ_NO_PREFETCH)); 2219 2220 (void) ztest_write(zd, object, offset, blocksize, data); 2221 break; 2222 } 2223 2224 (void) rw_unlock(&zd->zd_zilog_lock); 2225 2226 umem_free(data, blocksize); 2227 } 2228 2229 /* 2230 * Initialize an object description template. 2231 */ 2232 static void 2233 ztest_od_init(ztest_od_t *od, uint64_t id, char *tag, uint64_t index, 2234 dmu_object_type_t type, uint64_t blocksize, uint64_t gen) 2235 { 2236 od->od_dir = ZTEST_DIROBJ; 2237 od->od_object = 0; 2238 2239 od->od_crtype = type; 2240 od->od_crblocksize = blocksize ? blocksize : ztest_random_blocksize(); 2241 od->od_crgen = gen; 2242 2243 od->od_type = DMU_OT_NONE; 2244 od->od_blocksize = 0; 2245 od->od_gen = 0; 2246 2247 (void) snprintf(od->od_name, sizeof (od->od_name), "%s(%lld)[%llu]", 2248 tag, (int64_t)id, index); 2249 } 2250 2251 /* 2252 * Lookup or create the objects for a test using the od template. 2253 * If the objects do not all exist, or if 'remove' is specified, 2254 * remove any existing objects and create new ones. Otherwise, 2255 * use the existing objects. 2256 */ 2257 static int 2258 ztest_object_init(ztest_ds_t *zd, ztest_od_t *od, size_t size, boolean_t remove) 2259 { 2260 int count = size / sizeof (*od); 2261 int rv = 0; 2262 2263 VERIFY(mutex_lock(&zd->zd_dirobj_lock) == 0); 2264 if ((ztest_lookup(zd, od, count) != 0 || remove) && 2265 (ztest_remove(zd, od, count) != 0 || 2266 ztest_create(zd, od, count) != 0)) 2267 rv = -1; 2268 zd->zd_od = od; 2269 VERIFY(mutex_unlock(&zd->zd_dirobj_lock) == 0); 2270 2271 return (rv); 2272 } 2273 2274 /* ARGSUSED */ 2275 void 2276 ztest_zil_commit(ztest_ds_t *zd, uint64_t id) 2277 { 2278 zilog_t *zilog = zd->zd_zilog; 2279 2280 (void) rw_rdlock(&zd->zd_zilog_lock); 2281 2282 zil_commit(zilog, ztest_random(ZTEST_OBJECTS)); 2283 2284 /* 2285 * Remember the committed values in zd, which is in parent/child 2286 * shared memory. If we die, the next iteration of ztest_run() 2287 * will verify that the log really does contain this record. 2288 */ 2289 mutex_enter(&zilog->zl_lock); 2290 ASSERT(zd->zd_shared != NULL); 2291 ASSERT3U(zd->zd_shared->zd_seq, <=, zilog->zl_commit_lr_seq); 2292 zd->zd_shared->zd_seq = zilog->zl_commit_lr_seq; 2293 mutex_exit(&zilog->zl_lock); 2294 2295 (void) rw_unlock(&zd->zd_zilog_lock); 2296 } 2297 2298 /* 2299 * This function is designed to simulate the operations that occur during a 2300 * mount/unmount operation. We hold the dataset across these operations in an 2301 * attempt to expose any implicit assumptions about ZIL management. 2302 */ 2303 /* ARGSUSED */ 2304 void 2305 ztest_zil_remount(ztest_ds_t *zd, uint64_t id) 2306 { 2307 objset_t *os = zd->zd_os; 2308 2309 /* 2310 * We grab the zd_dirobj_lock to ensure that no other thread is 2311 * updating the zil (i.e. adding in-memory log records) and the 2312 * zd_zilog_lock to block any I/O. 2313 */ 2314 VERIFY0(mutex_lock(&zd->zd_dirobj_lock)); 2315 (void) rw_wrlock(&zd->zd_zilog_lock); 2316 2317 /* zfsvfs_teardown() */ 2318 zil_close(zd->zd_zilog); 2319 2320 /* zfsvfs_setup() */ 2321 VERIFY(zil_open(os, ztest_get_data) == zd->zd_zilog); 2322 zil_replay(os, zd, ztest_replay_vector); 2323 2324 (void) rw_unlock(&zd->zd_zilog_lock); 2325 VERIFY(mutex_unlock(&zd->zd_dirobj_lock) == 0); 2326 } 2327 2328 /* 2329 * Verify that we can't destroy an active pool, create an existing pool, 2330 * or create a pool with a bad vdev spec. 2331 */ 2332 /* ARGSUSED */ 2333 void 2334 ztest_spa_create_destroy(ztest_ds_t *zd, uint64_t id) 2335 { 2336 ztest_shared_opts_t *zo = &ztest_opts; 2337 spa_t *spa; 2338 nvlist_t *nvroot; 2339 2340 /* 2341 * Attempt to create using a bad file. 2342 */ 2343 nvroot = make_vdev_root("/dev/bogus", NULL, NULL, 0, 0, 0, 0, 0, 1); 2344 VERIFY3U(ENOENT, ==, 2345 spa_create("ztest_bad_file", nvroot, NULL, NULL)); 2346 nvlist_free(nvroot); 2347 2348 /* 2349 * Attempt to create using a bad mirror. 2350 */ 2351 nvroot = make_vdev_root("/dev/bogus", NULL, NULL, 0, 0, 0, 0, 2, 1); 2352 VERIFY3U(ENOENT, ==, 2353 spa_create("ztest_bad_mirror", nvroot, NULL, NULL)); 2354 nvlist_free(nvroot); 2355 2356 /* 2357 * Attempt to create an existing pool. It shouldn't matter 2358 * what's in the nvroot; we should fail with EEXIST. 2359 */ 2360 (void) rw_rdlock(&ztest_name_lock); 2361 nvroot = make_vdev_root("/dev/bogus", NULL, NULL, 0, 0, 0, 0, 0, 1); 2362 VERIFY3U(EEXIST, ==, spa_create(zo->zo_pool, nvroot, NULL, NULL)); 2363 nvlist_free(nvroot); 2364 VERIFY3U(0, ==, spa_open(zo->zo_pool, &spa, FTAG)); 2365 VERIFY3U(EBUSY, ==, spa_destroy(zo->zo_pool)); 2366 spa_close(spa, FTAG); 2367 2368 (void) rw_unlock(&ztest_name_lock); 2369 } 2370 2371 /* ARGSUSED */ 2372 void 2373 ztest_spa_upgrade(ztest_ds_t *zd, uint64_t id) 2374 { 2375 spa_t *spa; 2376 uint64_t initial_version = SPA_VERSION_INITIAL; 2377 uint64_t version, newversion; 2378 nvlist_t *nvroot, *props; 2379 char *name; 2380 2381 VERIFY0(mutex_lock(&ztest_vdev_lock)); 2382 name = kmem_asprintf("%s_upgrade", ztest_opts.zo_pool); 2383 2384 /* 2385 * Clean up from previous runs. 2386 */ 2387 (void) spa_destroy(name); 2388 2389 nvroot = make_vdev_root(NULL, NULL, name, ztest_opts.zo_vdev_size, 0, 2390 0, ztest_opts.zo_raidz, ztest_opts.zo_mirrors, 1); 2391 2392 /* 2393 * If we're configuring a RAIDZ device then make sure that the 2394 * the initial version is capable of supporting that feature. 2395 */ 2396 switch (ztest_opts.zo_raidz_parity) { 2397 case 0: 2398 case 1: 2399 initial_version = SPA_VERSION_INITIAL; 2400 break; 2401 case 2: 2402 initial_version = SPA_VERSION_RAIDZ2; 2403 break; 2404 case 3: 2405 initial_version = SPA_VERSION_RAIDZ3; 2406 break; 2407 } 2408 2409 /* 2410 * Create a pool with a spa version that can be upgraded. Pick 2411 * a value between initial_version and SPA_VERSION_BEFORE_FEATURES. 2412 */ 2413 do { 2414 version = ztest_random_spa_version(initial_version); 2415 } while (version > SPA_VERSION_BEFORE_FEATURES); 2416 2417 props = fnvlist_alloc(); 2418 fnvlist_add_uint64(props, 2419 zpool_prop_to_name(ZPOOL_PROP_VERSION), version); 2420 VERIFY0(spa_create(name, nvroot, props, NULL)); 2421 fnvlist_free(nvroot); 2422 fnvlist_free(props); 2423 2424 VERIFY0(spa_open(name, &spa, FTAG)); 2425 VERIFY3U(spa_version(spa), ==, version); 2426 newversion = ztest_random_spa_version(version + 1); 2427 2428 if (ztest_opts.zo_verbose >= 4) { 2429 (void) printf("upgrading spa version from %llu to %llu\n", 2430 (u_longlong_t)version, (u_longlong_t)newversion); 2431 } 2432 2433 spa_upgrade(spa, newversion); 2434 VERIFY3U(spa_version(spa), >, version); 2435 VERIFY3U(spa_version(spa), ==, fnvlist_lookup_uint64(spa->spa_config, 2436 zpool_prop_to_name(ZPOOL_PROP_VERSION))); 2437 spa_close(spa, FTAG); 2438 2439 strfree(name); 2440 VERIFY0(mutex_unlock(&ztest_vdev_lock)); 2441 } 2442 2443 static vdev_t * 2444 vdev_lookup_by_path(vdev_t *vd, const char *path) 2445 { 2446 vdev_t *mvd; 2447 2448 if (vd->vdev_path != NULL && strcmp(path, vd->vdev_path) == 0) 2449 return (vd); 2450 2451 for (int c = 0; c < vd->vdev_children; c++) 2452 if ((mvd = vdev_lookup_by_path(vd->vdev_child[c], path)) != 2453 NULL) 2454 return (mvd); 2455 2456 return (NULL); 2457 } 2458 2459 /* 2460 * Find the first available hole which can be used as a top-level. 2461 */ 2462 int 2463 find_vdev_hole(spa_t *spa) 2464 { 2465 vdev_t *rvd = spa->spa_root_vdev; 2466 int c; 2467 2468 ASSERT(spa_config_held(spa, SCL_VDEV, RW_READER) == SCL_VDEV); 2469 2470 for (c = 0; c < rvd->vdev_children; c++) { 2471 vdev_t *cvd = rvd->vdev_child[c]; 2472 2473 if (cvd->vdev_ishole) 2474 break; 2475 } 2476 return (c); 2477 } 2478 2479 /* 2480 * Verify that vdev_add() works as expected. 2481 */ 2482 /* ARGSUSED */ 2483 void 2484 ztest_vdev_add_remove(ztest_ds_t *zd, uint64_t id) 2485 { 2486 ztest_shared_t *zs = ztest_shared; 2487 spa_t *spa = ztest_spa; 2488 uint64_t leaves; 2489 uint64_t guid; 2490 nvlist_t *nvroot; 2491 int error; 2492 2493 VERIFY(mutex_lock(&ztest_vdev_lock) == 0); 2494 leaves = MAX(zs->zs_mirrors + zs->zs_splits, 1) * ztest_opts.zo_raidz; 2495 2496 spa_config_enter(spa, SCL_VDEV, FTAG, RW_READER); 2497 2498 ztest_shared->zs_vdev_next_leaf = find_vdev_hole(spa) * leaves; 2499 2500 /* 2501 * If we have slogs then remove them 1/4 of the time. 2502 */ 2503 if (spa_has_slogs(spa) && ztest_random(4) == 0) { 2504 /* 2505 * Grab the guid from the head of the log class rotor. 2506 */ 2507 guid = spa_log_class(spa)->mc_rotor->mg_vd->vdev_guid; 2508 2509 spa_config_exit(spa, SCL_VDEV, FTAG); 2510 2511 /* 2512 * We have to grab the zs_name_lock as writer to 2513 * prevent a race between removing a slog (dmu_objset_find) 2514 * and destroying a dataset. Removing the slog will 2515 * grab a reference on the dataset which may cause 2516 * dmu_objset_destroy() to fail with EBUSY thus 2517 * leaving the dataset in an inconsistent state. 2518 */ 2519 VERIFY(rw_wrlock(&ztest_name_lock) == 0); 2520 error = spa_vdev_remove(spa, guid, B_FALSE); 2521 VERIFY(rw_unlock(&ztest_name_lock) == 0); 2522 2523 if (error && error != EEXIST) 2524 fatal(0, "spa_vdev_remove() = %d", error); 2525 } else { 2526 spa_config_exit(spa, SCL_VDEV, FTAG); 2527 2528 /* 2529 * Make 1/4 of the devices be log devices. 2530 */ 2531 nvroot = make_vdev_root(NULL, NULL, NULL, 2532 ztest_opts.zo_vdev_size, 0, 2533 ztest_random(4) == 0, ztest_opts.zo_raidz, 2534 zs->zs_mirrors, 1); 2535 2536 error = spa_vdev_add(spa, nvroot); 2537 nvlist_free(nvroot); 2538 2539 if (error == ENOSPC) 2540 ztest_record_enospc("spa_vdev_add"); 2541 else if (error != 0) 2542 fatal(0, "spa_vdev_add() = %d", error); 2543 } 2544 2545 VERIFY(mutex_unlock(&ztest_vdev_lock) == 0); 2546 } 2547 2548 /* 2549 * Verify that adding/removing aux devices (l2arc, hot spare) works as expected. 2550 */ 2551 /* ARGSUSED */ 2552 void 2553 ztest_vdev_aux_add_remove(ztest_ds_t *zd, uint64_t id) 2554 { 2555 ztest_shared_t *zs = ztest_shared; 2556 spa_t *spa = ztest_spa; 2557 vdev_t *rvd = spa->spa_root_vdev; 2558 spa_aux_vdev_t *sav; 2559 char *aux; 2560 uint64_t guid = 0; 2561 int error; 2562 2563 if (ztest_random(2) == 0) { 2564 sav = &spa->spa_spares; 2565 aux = ZPOOL_CONFIG_SPARES; 2566 } else { 2567 sav = &spa->spa_l2cache; 2568 aux = ZPOOL_CONFIG_L2CACHE; 2569 } 2570 2571 VERIFY(mutex_lock(&ztest_vdev_lock) == 0); 2572 2573 spa_config_enter(spa, SCL_VDEV, FTAG, RW_READER); 2574 2575 if (sav->sav_count != 0 && ztest_random(4) == 0) { 2576 /* 2577 * Pick a random device to remove. 2578 */ 2579 guid = sav->sav_vdevs[ztest_random(sav->sav_count)]->vdev_guid; 2580 } else { 2581 /* 2582 * Find an unused device we can add. 2583 */ 2584 zs->zs_vdev_aux = 0; 2585 for (;;) { 2586 char path[MAXPATHLEN]; 2587 int c; 2588 (void) snprintf(path, sizeof (path), ztest_aux_template, 2589 ztest_opts.zo_dir, ztest_opts.zo_pool, aux, 2590 zs->zs_vdev_aux); 2591 for (c = 0; c < sav->sav_count; c++) 2592 if (strcmp(sav->sav_vdevs[c]->vdev_path, 2593 path) == 0) 2594 break; 2595 if (c == sav->sav_count && 2596 vdev_lookup_by_path(rvd, path) == NULL) 2597 break; 2598 zs->zs_vdev_aux++; 2599 } 2600 } 2601 2602 spa_config_exit(spa, SCL_VDEV, FTAG); 2603 2604 if (guid == 0) { 2605 /* 2606 * Add a new device. 2607 */ 2608 nvlist_t *nvroot = make_vdev_root(NULL, aux, NULL, 2609 (ztest_opts.zo_vdev_size * 5) / 4, 0, 0, 0, 0, 1); 2610 error = spa_vdev_add(spa, nvroot); 2611 if (error != 0) 2612 fatal(0, "spa_vdev_add(%p) = %d", nvroot, error); 2613 nvlist_free(nvroot); 2614 } else { 2615 /* 2616 * Remove an existing device. Sometimes, dirty its 2617 * vdev state first to make sure we handle removal 2618 * of devices that have pending state changes. 2619 */ 2620 if (ztest_random(2) == 0) 2621 (void) vdev_online(spa, guid, 0, NULL); 2622 2623 error = spa_vdev_remove(spa, guid, B_FALSE); 2624 if (error != 0 && error != EBUSY) 2625 fatal(0, "spa_vdev_remove(%llu) = %d", guid, error); 2626 } 2627 2628 VERIFY(mutex_unlock(&ztest_vdev_lock) == 0); 2629 } 2630 2631 /* 2632 * split a pool if it has mirror tlvdevs 2633 */ 2634 /* ARGSUSED */ 2635 void 2636 ztest_split_pool(ztest_ds_t *zd, uint64_t id) 2637 { 2638 ztest_shared_t *zs = ztest_shared; 2639 spa_t *spa = ztest_spa; 2640 vdev_t *rvd = spa->spa_root_vdev; 2641 nvlist_t *tree, **child, *config, *split, **schild; 2642 uint_t c, children, schildren = 0, lastlogid = 0; 2643 int error = 0; 2644 2645 VERIFY(mutex_lock(&ztest_vdev_lock) == 0); 2646 2647 /* ensure we have a useable config; mirrors of raidz aren't supported */ 2648 if (zs->zs_mirrors < 3 || ztest_opts.zo_raidz > 1) { 2649 VERIFY(mutex_unlock(&ztest_vdev_lock) == 0); 2650 return; 2651 } 2652 2653 /* clean up the old pool, if any */ 2654 (void) spa_destroy("splitp"); 2655 2656 spa_config_enter(spa, SCL_VDEV, FTAG, RW_READER); 2657 2658 /* generate a config from the existing config */ 2659 mutex_enter(&spa->spa_props_lock); 2660 VERIFY(nvlist_lookup_nvlist(spa->spa_config, ZPOOL_CONFIG_VDEV_TREE, 2661 &tree) == 0); 2662 mutex_exit(&spa->spa_props_lock); 2663 2664 VERIFY(nvlist_lookup_nvlist_array(tree, ZPOOL_CONFIG_CHILDREN, &child, 2665 &children) == 0); 2666 2667 schild = malloc(rvd->vdev_children * sizeof (nvlist_t *)); 2668 for (c = 0; c < children; c++) { 2669 vdev_t *tvd = rvd->vdev_child[c]; 2670 nvlist_t **mchild; 2671 uint_t mchildren; 2672 2673 if (tvd->vdev_islog || tvd->vdev_ops == &vdev_hole_ops) { 2674 VERIFY(nvlist_alloc(&schild[schildren], NV_UNIQUE_NAME, 2675 0) == 0); 2676 VERIFY(nvlist_add_string(schild[schildren], 2677 ZPOOL_CONFIG_TYPE, VDEV_TYPE_HOLE) == 0); 2678 VERIFY(nvlist_add_uint64(schild[schildren], 2679 ZPOOL_CONFIG_IS_HOLE, 1) == 0); 2680 if (lastlogid == 0) 2681 lastlogid = schildren; 2682 ++schildren; 2683 continue; 2684 } 2685 lastlogid = 0; 2686 VERIFY(nvlist_lookup_nvlist_array(child[c], 2687 ZPOOL_CONFIG_CHILDREN, &mchild, &mchildren) == 0); 2688 VERIFY(nvlist_dup(mchild[0], &schild[schildren++], 0) == 0); 2689 } 2690 2691 /* OK, create a config that can be used to split */ 2692 VERIFY(nvlist_alloc(&split, NV_UNIQUE_NAME, 0) == 0); 2693 VERIFY(nvlist_add_string(split, ZPOOL_CONFIG_TYPE, 2694 VDEV_TYPE_ROOT) == 0); 2695 VERIFY(nvlist_add_nvlist_array(split, ZPOOL_CONFIG_CHILDREN, schild, 2696 lastlogid != 0 ? lastlogid : schildren) == 0); 2697 2698 VERIFY(nvlist_alloc(&config, NV_UNIQUE_NAME, 0) == 0); 2699 VERIFY(nvlist_add_nvlist(config, ZPOOL_CONFIG_VDEV_TREE, split) == 0); 2700 2701 for (c = 0; c < schildren; c++) 2702 nvlist_free(schild[c]); 2703 free(schild); 2704 nvlist_free(split); 2705 2706 spa_config_exit(spa, SCL_VDEV, FTAG); 2707 2708 (void) rw_wrlock(&ztest_name_lock); 2709 error = spa_vdev_split_mirror(spa, "splitp", config, NULL, B_FALSE); 2710 (void) rw_unlock(&ztest_name_lock); 2711 2712 nvlist_free(config); 2713 2714 if (error == 0) { 2715 (void) printf("successful split - results:\n"); 2716 mutex_enter(&spa_namespace_lock); 2717 show_pool_stats(spa); 2718 show_pool_stats(spa_lookup("splitp")); 2719 mutex_exit(&spa_namespace_lock); 2720 ++zs->zs_splits; 2721 --zs->zs_mirrors; 2722 } 2723 VERIFY(mutex_unlock(&ztest_vdev_lock) == 0); 2724 2725 } 2726 2727 /* 2728 * Verify that we can attach and detach devices. 2729 */ 2730 /* ARGSUSED */ 2731 void 2732 ztest_vdev_attach_detach(ztest_ds_t *zd, uint64_t id) 2733 { 2734 ztest_shared_t *zs = ztest_shared; 2735 spa_t *spa = ztest_spa; 2736 spa_aux_vdev_t *sav = &spa->spa_spares; 2737 vdev_t *rvd = spa->spa_root_vdev; 2738 vdev_t *oldvd, *newvd, *pvd; 2739 nvlist_t *root; 2740 uint64_t leaves; 2741 uint64_t leaf, top; 2742 uint64_t ashift = ztest_get_ashift(); 2743 uint64_t oldguid, pguid; 2744 uint64_t oldsize, newsize; 2745 char oldpath[MAXPATHLEN], newpath[MAXPATHLEN]; 2746 int replacing; 2747 int oldvd_has_siblings = B_FALSE; 2748 int newvd_is_spare = B_FALSE; 2749 int oldvd_is_log; 2750 int error, expected_error; 2751 2752 VERIFY(mutex_lock(&ztest_vdev_lock) == 0); 2753 leaves = MAX(zs->zs_mirrors, 1) * ztest_opts.zo_raidz; 2754 2755 spa_config_enter(spa, SCL_VDEV, FTAG, RW_READER); 2756 2757 /* 2758 * Decide whether to do an attach or a replace. 2759 */ 2760 replacing = ztest_random(2); 2761 2762 /* 2763 * Pick a random top-level vdev. 2764 */ 2765 top = ztest_random_vdev_top(spa, B_TRUE); 2766 2767 /* 2768 * Pick a random leaf within it. 2769 */ 2770 leaf = ztest_random(leaves); 2771 2772 /* 2773 * Locate this vdev. 2774 */ 2775 oldvd = rvd->vdev_child[top]; 2776 if (zs->zs_mirrors >= 1) { 2777 ASSERT(oldvd->vdev_ops == &vdev_mirror_ops); 2778 ASSERT(oldvd->vdev_children >= zs->zs_mirrors); 2779 oldvd = oldvd->vdev_child[leaf / ztest_opts.zo_raidz]; 2780 } 2781 if (ztest_opts.zo_raidz > 1) { 2782 ASSERT(oldvd->vdev_ops == &vdev_raidz_ops); 2783 ASSERT(oldvd->vdev_children == ztest_opts.zo_raidz); 2784 oldvd = oldvd->vdev_child[leaf % ztest_opts.zo_raidz]; 2785 } 2786 2787 /* 2788 * If we're already doing an attach or replace, oldvd may be a 2789 * mirror vdev -- in which case, pick a random child. 2790 */ 2791 while (oldvd->vdev_children != 0) { 2792 oldvd_has_siblings = B_TRUE; 2793 ASSERT(oldvd->vdev_children >= 2); 2794 oldvd = oldvd->vdev_child[ztest_random(oldvd->vdev_children)]; 2795 } 2796 2797 oldguid = oldvd->vdev_guid; 2798 oldsize = vdev_get_min_asize(oldvd); 2799 oldvd_is_log = oldvd->vdev_top->vdev_islog; 2800 (void) strcpy(oldpath, oldvd->vdev_path); 2801 pvd = oldvd->vdev_parent; 2802 pguid = pvd->vdev_guid; 2803 2804 /* 2805 * If oldvd has siblings, then half of the time, detach it. 2806 */ 2807 if (oldvd_has_siblings && ztest_random(2) == 0) { 2808 spa_config_exit(spa, SCL_VDEV, FTAG); 2809 error = spa_vdev_detach(spa, oldguid, pguid, B_FALSE); 2810 if (error != 0 && error != ENODEV && error != EBUSY && 2811 error != ENOTSUP) 2812 fatal(0, "detach (%s) returned %d", oldpath, error); 2813 VERIFY(mutex_unlock(&ztest_vdev_lock) == 0); 2814 return; 2815 } 2816 2817 /* 2818 * For the new vdev, choose with equal probability between the two 2819 * standard paths (ending in either 'a' or 'b') or a random hot spare. 2820 */ 2821 if (sav->sav_count != 0 && ztest_random(3) == 0) { 2822 newvd = sav->sav_vdevs[ztest_random(sav->sav_count)]; 2823 newvd_is_spare = B_TRUE; 2824 (void) strcpy(newpath, newvd->vdev_path); 2825 } else { 2826 (void) snprintf(newpath, sizeof (newpath), ztest_dev_template, 2827 ztest_opts.zo_dir, ztest_opts.zo_pool, 2828 top * leaves + leaf); 2829 if (ztest_random(2) == 0) 2830 newpath[strlen(newpath) - 1] = 'b'; 2831 newvd = vdev_lookup_by_path(rvd, newpath); 2832 } 2833 2834 if (newvd) { 2835 newsize = vdev_get_min_asize(newvd); 2836 } else { 2837 /* 2838 * Make newsize a little bigger or smaller than oldsize. 2839 * If it's smaller, the attach should fail. 2840 * If it's larger, and we're doing a replace, 2841 * we should get dynamic LUN growth when we're done. 2842 */ 2843 newsize = 10 * oldsize / (9 + ztest_random(3)); 2844 } 2845 2846 /* 2847 * If pvd is not a mirror or root, the attach should fail with ENOTSUP, 2848 * unless it's a replace; in that case any non-replacing parent is OK. 2849 * 2850 * If newvd is already part of the pool, it should fail with EBUSY. 2851 * 2852 * If newvd is too small, it should fail with EOVERFLOW. 2853 */ 2854 if (pvd->vdev_ops != &vdev_mirror_ops && 2855 pvd->vdev_ops != &vdev_root_ops && (!replacing || 2856 pvd->vdev_ops == &vdev_replacing_ops || 2857 pvd->vdev_ops == &vdev_spare_ops)) 2858 expected_error = ENOTSUP; 2859 else if (newvd_is_spare && (!replacing || oldvd_is_log)) 2860 expected_error = ENOTSUP; 2861 else if (newvd == oldvd) 2862 expected_error = replacing ? 0 : EBUSY; 2863 else if (vdev_lookup_by_path(rvd, newpath) != NULL) 2864 expected_error = EBUSY; 2865 else if (newsize < oldsize) 2866 expected_error = EOVERFLOW; 2867 else if (ashift > oldvd->vdev_top->vdev_ashift) 2868 expected_error = EDOM; 2869 else 2870 expected_error = 0; 2871 2872 spa_config_exit(spa, SCL_VDEV, FTAG); 2873 2874 /* 2875 * Build the nvlist describing newpath. 2876 */ 2877 root = make_vdev_root(newpath, NULL, NULL, newvd == NULL ? newsize : 0, 2878 ashift, 0, 0, 0, 1); 2879 2880 error = spa_vdev_attach(spa, oldguid, root, replacing); 2881 2882 nvlist_free(root); 2883 2884 /* 2885 * If our parent was the replacing vdev, but the replace completed, 2886 * then instead of failing with ENOTSUP we may either succeed, 2887 * fail with ENODEV, or fail with EOVERFLOW. 2888 */ 2889 if (expected_error == ENOTSUP && 2890 (error == 0 || error == ENODEV || error == EOVERFLOW)) 2891 expected_error = error; 2892 2893 /* 2894 * If someone grew the LUN, the replacement may be too small. 2895 */ 2896 if (error == EOVERFLOW || error == EBUSY) 2897 expected_error = error; 2898 2899 /* XXX workaround 6690467 */ 2900 if (error != expected_error && expected_error != EBUSY) { 2901 fatal(0, "attach (%s %llu, %s %llu, %d) " 2902 "returned %d, expected %d", 2903 oldpath, oldsize, newpath, 2904 newsize, replacing, error, expected_error); 2905 } 2906 2907 VERIFY(mutex_unlock(&ztest_vdev_lock) == 0); 2908 } 2909 2910 /* 2911 * Callback function which expands the physical size of the vdev. 2912 */ 2913 vdev_t * 2914 grow_vdev(vdev_t *vd, void *arg) 2915 { 2916 spa_t *spa = vd->vdev_spa; 2917 size_t *newsize = arg; 2918 size_t fsize; 2919 int fd; 2920 2921 ASSERT(spa_config_held(spa, SCL_STATE, RW_READER) == SCL_STATE); 2922 ASSERT(vd->vdev_ops->vdev_op_leaf); 2923 2924 if ((fd = open(vd->vdev_path, O_RDWR)) == -1) 2925 return (vd); 2926 2927 fsize = lseek(fd, 0, SEEK_END); 2928 (void) ftruncate(fd, *newsize); 2929 2930 if (ztest_opts.zo_verbose >= 6) { 2931 (void) printf("%s grew from %lu to %lu bytes\n", 2932 vd->vdev_path, (ulong_t)fsize, (ulong_t)*newsize); 2933 } 2934 (void) close(fd); 2935 return (NULL); 2936 } 2937 2938 /* 2939 * Callback function which expands a given vdev by calling vdev_online(). 2940 */ 2941 /* ARGSUSED */ 2942 vdev_t * 2943 online_vdev(vdev_t *vd, void *arg) 2944 { 2945 spa_t *spa = vd->vdev_spa; 2946 vdev_t *tvd = vd->vdev_top; 2947 uint64_t guid = vd->vdev_guid; 2948 uint64_t generation = spa->spa_config_generation + 1; 2949 vdev_state_t newstate = VDEV_STATE_UNKNOWN; 2950 int error; 2951 2952 ASSERT(spa_config_held(spa, SCL_STATE, RW_READER) == SCL_STATE); 2953 ASSERT(vd->vdev_ops->vdev_op_leaf); 2954 2955 /* Calling vdev_online will initialize the new metaslabs */ 2956 spa_config_exit(spa, SCL_STATE, spa); 2957 error = vdev_online(spa, guid, ZFS_ONLINE_EXPAND, &newstate); 2958 spa_config_enter(spa, SCL_STATE, spa, RW_READER); 2959 2960 /* 2961 * If vdev_online returned an error or the underlying vdev_open 2962 * failed then we abort the expand. The only way to know that 2963 * vdev_open fails is by checking the returned newstate. 2964 */ 2965 if (error || newstate != VDEV_STATE_HEALTHY) { 2966 if (ztest_opts.zo_verbose >= 5) { 2967 (void) printf("Unable to expand vdev, state %llu, " 2968 "error %d\n", (u_longlong_t)newstate, error); 2969 } 2970 return (vd); 2971 } 2972 ASSERT3U(newstate, ==, VDEV_STATE_HEALTHY); 2973 2974 /* 2975 * Since we dropped the lock we need to ensure that we're 2976 * still talking to the original vdev. It's possible this 2977 * vdev may have been detached/replaced while we were 2978 * trying to online it. 2979 */ 2980 if (generation != spa->spa_config_generation) { 2981 if (ztest_opts.zo_verbose >= 5) { 2982 (void) printf("vdev configuration has changed, " 2983 "guid %llu, state %llu, expected gen %llu, " 2984 "got gen %llu\n", 2985 (u_longlong_t)guid, 2986 (u_longlong_t)tvd->vdev_state, 2987 (u_longlong_t)generation, 2988 (u_longlong_t)spa->spa_config_generation); 2989 } 2990 return (vd); 2991 } 2992 return (NULL); 2993 } 2994 2995 /* 2996 * Traverse the vdev tree calling the supplied function. 2997 * We continue to walk the tree until we either have walked all 2998 * children or we receive a non-NULL return from the callback. 2999 * If a NULL callback is passed, then we just return back the first 3000 * leaf vdev we encounter. 3001 */ 3002 vdev_t * 3003 vdev_walk_tree(vdev_t *vd, vdev_t *(*func)(vdev_t *, void *), void *arg) 3004 { 3005 if (vd->vdev_ops->vdev_op_leaf) { 3006 if (func == NULL) 3007 return (vd); 3008 else 3009 return (func(vd, arg)); 3010 } 3011 3012 for (uint_t c = 0; c < vd->vdev_children; c++) { 3013 vdev_t *cvd = vd->vdev_child[c]; 3014 if ((cvd = vdev_walk_tree(cvd, func, arg)) != NULL) 3015 return (cvd); 3016 } 3017 return (NULL); 3018 } 3019 3020 /* 3021 * Verify that dynamic LUN growth works as expected. 3022 */ 3023 /* ARGSUSED */ 3024 void 3025 ztest_vdev_LUN_growth(ztest_ds_t *zd, uint64_t id) 3026 { 3027 spa_t *spa = ztest_spa; 3028 vdev_t *vd, *tvd; 3029 metaslab_class_t *mc; 3030 metaslab_group_t *mg; 3031 size_t psize, newsize; 3032 uint64_t top; 3033 uint64_t old_class_space, new_class_space, old_ms_count, new_ms_count; 3034 3035 VERIFY(mutex_lock(&ztest_vdev_lock) == 0); 3036 spa_config_enter(spa, SCL_STATE, spa, RW_READER); 3037 3038 top = ztest_random_vdev_top(spa, B_TRUE); 3039 3040 tvd = spa->spa_root_vdev->vdev_child[top]; 3041 mg = tvd->vdev_mg; 3042 mc = mg->mg_class; 3043 old_ms_count = tvd->vdev_ms_count; 3044 old_class_space = metaslab_class_get_space(mc); 3045 3046 /* 3047 * Determine the size of the first leaf vdev associated with 3048 * our top-level device. 3049 */ 3050 vd = vdev_walk_tree(tvd, NULL, NULL); 3051 ASSERT3P(vd, !=, NULL); 3052 ASSERT(vd->vdev_ops->vdev_op_leaf); 3053 3054 psize = vd->vdev_psize; 3055 3056 /* 3057 * We only try to expand the vdev if it's healthy, less than 4x its 3058 * original size, and it has a valid psize. 3059 */ 3060 if (tvd->vdev_state != VDEV_STATE_HEALTHY || 3061 psize == 0 || psize >= 4 * ztest_opts.zo_vdev_size) { 3062 spa_config_exit(spa, SCL_STATE, spa); 3063 VERIFY(mutex_unlock(&ztest_vdev_lock) == 0); 3064 return; 3065 } 3066 ASSERT(psize > 0); 3067 newsize = psize + psize / 8; 3068 ASSERT3U(newsize, >, psize); 3069 3070 if (ztest_opts.zo_verbose >= 6) { 3071 (void) printf("Expanding LUN %s from %lu to %lu\n", 3072 vd->vdev_path, (ulong_t)psize, (ulong_t)newsize); 3073 } 3074 3075 /* 3076 * Growing the vdev is a two step process: 3077 * 1). expand the physical size (i.e. relabel) 3078 * 2). online the vdev to create the new metaslabs 3079 */ 3080 if (vdev_walk_tree(tvd, grow_vdev, &newsize) != NULL || 3081 vdev_walk_tree(tvd, online_vdev, NULL) != NULL || 3082 tvd->vdev_state != VDEV_STATE_HEALTHY) { 3083 if (ztest_opts.zo_verbose >= 5) { 3084 (void) printf("Could not expand LUN because " 3085 "the vdev configuration changed.\n"); 3086 } 3087 spa_config_exit(spa, SCL_STATE, spa); 3088 VERIFY(mutex_unlock(&ztest_vdev_lock) == 0); 3089 return; 3090 } 3091 3092 spa_config_exit(spa, SCL_STATE, spa); 3093 3094 /* 3095 * Expanding the LUN will update the config asynchronously, 3096 * thus we must wait for the async thread to complete any 3097 * pending tasks before proceeding. 3098 */ 3099 for (;;) { 3100 boolean_t done; 3101 mutex_enter(&spa->spa_async_lock); 3102 done = (spa->spa_async_thread == NULL && !spa->spa_async_tasks); 3103 mutex_exit(&spa->spa_async_lock); 3104 if (done) 3105 break; 3106 txg_wait_synced(spa_get_dsl(spa), 0); 3107 (void) poll(NULL, 0, 100); 3108 } 3109 3110 spa_config_enter(spa, SCL_STATE, spa, RW_READER); 3111 3112 tvd = spa->spa_root_vdev->vdev_child[top]; 3113 new_ms_count = tvd->vdev_ms_count; 3114 new_class_space = metaslab_class_get_space(mc); 3115 3116 if (tvd->vdev_mg != mg || mg->mg_class != mc) { 3117 if (ztest_opts.zo_verbose >= 5) { 3118 (void) printf("Could not verify LUN expansion due to " 3119 "intervening vdev offline or remove.\n"); 3120 } 3121 spa_config_exit(spa, SCL_STATE, spa); 3122 VERIFY(mutex_unlock(&ztest_vdev_lock) == 0); 3123 return; 3124 } 3125 3126 /* 3127 * Make sure we were able to grow the vdev. 3128 */ 3129 if (new_ms_count <= old_ms_count) 3130 fatal(0, "LUN expansion failed: ms_count %llu <= %llu\n", 3131 old_ms_count, new_ms_count); 3132 3133 /* 3134 * Make sure we were able to grow the pool. 3135 */ 3136 if (new_class_space <= old_class_space) 3137 fatal(0, "LUN expansion failed: class_space %llu <= %llu\n", 3138 old_class_space, new_class_space); 3139 3140 if (ztest_opts.zo_verbose >= 5) { 3141 char oldnumbuf[6], newnumbuf[6]; 3142 3143 nicenum(old_class_space, oldnumbuf); 3144 nicenum(new_class_space, newnumbuf); 3145 (void) printf("%s grew from %s to %s\n", 3146 spa->spa_name, oldnumbuf, newnumbuf); 3147 } 3148 3149 spa_config_exit(spa, SCL_STATE, spa); 3150 VERIFY(mutex_unlock(&ztest_vdev_lock) == 0); 3151 } 3152 3153 /* 3154 * Verify that dmu_objset_{create,destroy,open,close} work as expected. 3155 */ 3156 /* ARGSUSED */ 3157 static void 3158 ztest_objset_create_cb(objset_t *os, void *arg, cred_t *cr, dmu_tx_t *tx) 3159 { 3160 /* 3161 * Create the objects common to all ztest datasets. 3162 */ 3163 VERIFY(zap_create_claim(os, ZTEST_DIROBJ, 3164 DMU_OT_ZAP_OTHER, DMU_OT_NONE, 0, tx) == 0); 3165 } 3166 3167 static int 3168 ztest_dataset_create(char *dsname) 3169 { 3170 uint64_t zilset = ztest_random(100); 3171 int err = dmu_objset_create(dsname, DMU_OST_OTHER, 0, 3172 ztest_objset_create_cb, NULL); 3173 3174 if (err || zilset < 80) 3175 return (err); 3176 3177 if (ztest_opts.zo_verbose >= 6) 3178 (void) printf("Setting dataset %s to sync always\n", dsname); 3179 return (ztest_dsl_prop_set_uint64(dsname, ZFS_PROP_SYNC, 3180 ZFS_SYNC_ALWAYS, B_FALSE)); 3181 } 3182 3183 /* ARGSUSED */ 3184 static int 3185 ztest_objset_destroy_cb(const char *name, void *arg) 3186 { 3187 objset_t *os; 3188 dmu_object_info_t doi; 3189 int error; 3190 3191 /* 3192 * Verify that the dataset contains a directory object. 3193 */ 3194 VERIFY0(dmu_objset_own(name, DMU_OST_OTHER, B_TRUE, FTAG, &os)); 3195 error = dmu_object_info(os, ZTEST_DIROBJ, &doi); 3196 if (error != ENOENT) { 3197 /* We could have crashed in the middle of destroying it */ 3198 ASSERT0(error); 3199 ASSERT3U(doi.doi_type, ==, DMU_OT_ZAP_OTHER); 3200 ASSERT3S(doi.doi_physical_blocks_512, >=, 0); 3201 } 3202 dmu_objset_disown(os, FTAG); 3203 3204 /* 3205 * Destroy the dataset. 3206 */ 3207 if (strchr(name, '@') != NULL) { 3208 VERIFY0(dsl_destroy_snapshot(name, B_FALSE)); 3209 } else { 3210 VERIFY0(dsl_destroy_head(name)); 3211 } 3212 return (0); 3213 } 3214 3215 static boolean_t 3216 ztest_snapshot_create(char *osname, uint64_t id) 3217 { 3218 char snapname[MAXNAMELEN]; 3219 int error; 3220 3221 (void) snprintf(snapname, sizeof (snapname), "%llu", (u_longlong_t)id); 3222 3223 error = dmu_objset_snapshot_one(osname, snapname); 3224 if (error == ENOSPC) { 3225 ztest_record_enospc(FTAG); 3226 return (B_FALSE); 3227 } 3228 if (error != 0 && error != EEXIST) { 3229 fatal(0, "ztest_snapshot_create(%s@%s) = %d", osname, 3230 snapname, error); 3231 } 3232 return (B_TRUE); 3233 } 3234 3235 static boolean_t 3236 ztest_snapshot_destroy(char *osname, uint64_t id) 3237 { 3238 char snapname[MAXNAMELEN]; 3239 int error; 3240 3241 (void) snprintf(snapname, MAXNAMELEN, "%s@%llu", osname, 3242 (u_longlong_t)id); 3243 3244 error = dsl_destroy_snapshot(snapname, B_FALSE); 3245 if (error != 0 && error != ENOENT) 3246 fatal(0, "ztest_snapshot_destroy(%s) = %d", snapname, error); 3247 return (B_TRUE); 3248 } 3249 3250 /* ARGSUSED */ 3251 void 3252 ztest_dmu_objset_create_destroy(ztest_ds_t *zd, uint64_t id) 3253 { 3254 ztest_ds_t zdtmp; 3255 int iters; 3256 int error; 3257 objset_t *os, *os2; 3258 char name[MAXNAMELEN]; 3259 zilog_t *zilog; 3260 3261 (void) rw_rdlock(&ztest_name_lock); 3262 3263 (void) snprintf(name, MAXNAMELEN, "%s/temp_%llu", 3264 ztest_opts.zo_pool, (u_longlong_t)id); 3265 3266 /* 3267 * If this dataset exists from a previous run, process its replay log 3268 * half of the time. If we don't replay it, then dmu_objset_destroy() 3269 * (invoked from ztest_objset_destroy_cb()) should just throw it away. 3270 */ 3271 if (ztest_random(2) == 0 && 3272 dmu_objset_own(name, DMU_OST_OTHER, B_FALSE, FTAG, &os) == 0) { 3273 ztest_zd_init(&zdtmp, NULL, os); 3274 zil_replay(os, &zdtmp, ztest_replay_vector); 3275 ztest_zd_fini(&zdtmp); 3276 dmu_objset_disown(os, FTAG); 3277 } 3278 3279 /* 3280 * There may be an old instance of the dataset we're about to 3281 * create lying around from a previous run. If so, destroy it 3282 * and all of its snapshots. 3283 */ 3284 (void) dmu_objset_find(name, ztest_objset_destroy_cb, NULL, 3285 DS_FIND_CHILDREN | DS_FIND_SNAPSHOTS); 3286 3287 /* 3288 * Verify that the destroyed dataset is no longer in the namespace. 3289 */ 3290 VERIFY3U(ENOENT, ==, dmu_objset_own(name, DMU_OST_OTHER, B_TRUE, 3291 FTAG, &os)); 3292 3293 /* 3294 * Verify that we can create a new dataset. 3295 */ 3296 error = ztest_dataset_create(name); 3297 if (error) { 3298 if (error == ENOSPC) { 3299 ztest_record_enospc(FTAG); 3300 (void) rw_unlock(&ztest_name_lock); 3301 return; 3302 } 3303 fatal(0, "dmu_objset_create(%s) = %d", name, error); 3304 } 3305 3306 VERIFY0(dmu_objset_own(name, DMU_OST_OTHER, B_FALSE, FTAG, &os)); 3307 3308 ztest_zd_init(&zdtmp, NULL, os); 3309 3310 /* 3311 * Open the intent log for it. 3312 */ 3313 zilog = zil_open(os, ztest_get_data); 3314 3315 /* 3316 * Put some objects in there, do a little I/O to them, 3317 * and randomly take a couple of snapshots along the way. 3318 */ 3319 iters = ztest_random(5); 3320 for (int i = 0; i < iters; i++) { 3321 ztest_dmu_object_alloc_free(&zdtmp, id); 3322 if (ztest_random(iters) == 0) 3323 (void) ztest_snapshot_create(name, i); 3324 } 3325 3326 /* 3327 * Verify that we cannot create an existing dataset. 3328 */ 3329 VERIFY3U(EEXIST, ==, 3330 dmu_objset_create(name, DMU_OST_OTHER, 0, NULL, NULL)); 3331 3332 /* 3333 * Verify that we can hold an objset that is also owned. 3334 */ 3335 VERIFY3U(0, ==, dmu_objset_hold(name, FTAG, &os2)); 3336 dmu_objset_rele(os2, FTAG); 3337 3338 /* 3339 * Verify that we cannot own an objset that is already owned. 3340 */ 3341 VERIFY3U(EBUSY, ==, 3342 dmu_objset_own(name, DMU_OST_OTHER, B_FALSE, FTAG, &os2)); 3343 3344 zil_close(zilog); 3345 dmu_objset_disown(os, FTAG); 3346 ztest_zd_fini(&zdtmp); 3347 3348 (void) rw_unlock(&ztest_name_lock); 3349 } 3350 3351 /* 3352 * Verify that dmu_snapshot_{create,destroy,open,close} work as expected. 3353 */ 3354 void 3355 ztest_dmu_snapshot_create_destroy(ztest_ds_t *zd, uint64_t id) 3356 { 3357 (void) rw_rdlock(&ztest_name_lock); 3358 (void) ztest_snapshot_destroy(zd->zd_name, id); 3359 (void) ztest_snapshot_create(zd->zd_name, id); 3360 (void) rw_unlock(&ztest_name_lock); 3361 } 3362 3363 /* 3364 * Cleanup non-standard snapshots and clones. 3365 */ 3366 void 3367 ztest_dsl_dataset_cleanup(char *osname, uint64_t id) 3368 { 3369 char snap1name[MAXNAMELEN]; 3370 char clone1name[MAXNAMELEN]; 3371 char snap2name[MAXNAMELEN]; 3372 char clone2name[MAXNAMELEN]; 3373 char snap3name[MAXNAMELEN]; 3374 int error; 3375 3376 (void) snprintf(snap1name, MAXNAMELEN, "%s@s1_%llu", osname, id); 3377 (void) snprintf(clone1name, MAXNAMELEN, "%s/c1_%llu", osname, id); 3378 (void) snprintf(snap2name, MAXNAMELEN, "%s@s2_%llu", clone1name, id); 3379 (void) snprintf(clone2name, MAXNAMELEN, "%s/c2_%llu", osname, id); 3380 (void) snprintf(snap3name, MAXNAMELEN, "%s@s3_%llu", clone1name, id); 3381 3382 error = dsl_destroy_head(clone2name); 3383 if (error && error != ENOENT) 3384 fatal(0, "dsl_destroy_head(%s) = %d", clone2name, error); 3385 error = dsl_destroy_snapshot(snap3name, B_FALSE); 3386 if (error && error != ENOENT) 3387 fatal(0, "dsl_destroy_snapshot(%s) = %d", snap3name, error); 3388 error = dsl_destroy_snapshot(snap2name, B_FALSE); 3389 if (error && error != ENOENT) 3390 fatal(0, "dsl_destroy_snapshot(%s) = %d", snap2name, error); 3391 error = dsl_destroy_head(clone1name); 3392 if (error && error != ENOENT) 3393 fatal(0, "dsl_destroy_head(%s) = %d", clone1name, error); 3394 error = dsl_destroy_snapshot(snap1name, B_FALSE); 3395 if (error && error != ENOENT) 3396 fatal(0, "dsl_destroy_snapshot(%s) = %d", snap1name, error); 3397 } 3398 3399 /* 3400 * Verify dsl_dataset_promote handles EBUSY 3401 */ 3402 void 3403 ztest_dsl_dataset_promote_busy(ztest_ds_t *zd, uint64_t id) 3404 { 3405 objset_t *os; 3406 char snap1name[MAXNAMELEN]; 3407 char clone1name[MAXNAMELEN]; 3408 char snap2name[MAXNAMELEN]; 3409 char clone2name[MAXNAMELEN]; 3410 char snap3name[MAXNAMELEN]; 3411 char *osname = zd->zd_name; 3412 int error; 3413 3414 (void) rw_rdlock(&ztest_name_lock); 3415 3416 ztest_dsl_dataset_cleanup(osname, id); 3417 3418 (void) snprintf(snap1name, MAXNAMELEN, "%s@s1_%llu", osname, id); 3419 (void) snprintf(clone1name, MAXNAMELEN, "%s/c1_%llu", osname, id); 3420 (void) snprintf(snap2name, MAXNAMELEN, "%s@s2_%llu", clone1name, id); 3421 (void) snprintf(clone2name, MAXNAMELEN, "%s/c2_%llu", osname, id); 3422 (void) snprintf(snap3name, MAXNAMELEN, "%s@s3_%llu", clone1name, id); 3423 3424 error = dmu_objset_snapshot_one(osname, strchr(snap1name, '@') + 1); 3425 if (error && error != EEXIST) { 3426 if (error == ENOSPC) { 3427 ztest_record_enospc(FTAG); 3428 goto out; 3429 } 3430 fatal(0, "dmu_take_snapshot(%s) = %d", snap1name, error); 3431 } 3432 3433 error = dmu_objset_clone(clone1name, snap1name); 3434 if (error) { 3435 if (error == ENOSPC) { 3436 ztest_record_enospc(FTAG); 3437 goto out; 3438 } 3439 fatal(0, "dmu_objset_create(%s) = %d", clone1name, error); 3440 } 3441 3442 error = dmu_objset_snapshot_one(clone1name, strchr(snap2name, '@') + 1); 3443 if (error && error != EEXIST) { 3444 if (error == ENOSPC) { 3445 ztest_record_enospc(FTAG); 3446 goto out; 3447 } 3448 fatal(0, "dmu_open_snapshot(%s) = %d", snap2name, error); 3449 } 3450 3451 error = dmu_objset_snapshot_one(clone1name, strchr(snap3name, '@') + 1); 3452 if (error && error != EEXIST) { 3453 if (error == ENOSPC) { 3454 ztest_record_enospc(FTAG); 3455 goto out; 3456 } 3457 fatal(0, "dmu_open_snapshot(%s) = %d", snap3name, error); 3458 } 3459 3460 error = dmu_objset_clone(clone2name, snap3name); 3461 if (error) { 3462 if (error == ENOSPC) { 3463 ztest_record_enospc(FTAG); 3464 goto out; 3465 } 3466 fatal(0, "dmu_objset_create(%s) = %d", clone2name, error); 3467 } 3468 3469 error = dmu_objset_own(snap2name, DMU_OST_ANY, B_TRUE, FTAG, &os); 3470 if (error) 3471 fatal(0, "dmu_objset_own(%s) = %d", snap2name, error); 3472 error = dsl_dataset_promote(clone2name, NULL); 3473 if (error != EBUSY) 3474 fatal(0, "dsl_dataset_promote(%s), %d, not EBUSY", clone2name, 3475 error); 3476 dmu_objset_disown(os, FTAG); 3477 3478 out: 3479 ztest_dsl_dataset_cleanup(osname, id); 3480 3481 (void) rw_unlock(&ztest_name_lock); 3482 } 3483 3484 /* 3485 * Verify that dmu_object_{alloc,free} work as expected. 3486 */ 3487 void 3488 ztest_dmu_object_alloc_free(ztest_ds_t *zd, uint64_t id) 3489 { 3490 ztest_od_t od[4]; 3491 int batchsize = sizeof (od) / sizeof (od[0]); 3492 3493 for (int b = 0; b < batchsize; b++) 3494 ztest_od_init(&od[b], id, FTAG, b, DMU_OT_UINT64_OTHER, 0, 0); 3495 3496 /* 3497 * Destroy the previous batch of objects, create a new batch, 3498 * and do some I/O on the new objects. 3499 */ 3500 if (ztest_object_init(zd, od, sizeof (od), B_TRUE) != 0) 3501 return; 3502 3503 while (ztest_random(4 * batchsize) != 0) 3504 ztest_io(zd, od[ztest_random(batchsize)].od_object, 3505 ztest_random(ZTEST_RANGE_LOCKS) << SPA_MAXBLOCKSHIFT); 3506 } 3507 3508 /* 3509 * Verify that dmu_{read,write} work as expected. 3510 */ 3511 void 3512 ztest_dmu_read_write(ztest_ds_t *zd, uint64_t id) 3513 { 3514 objset_t *os = zd->zd_os; 3515 ztest_od_t od[2]; 3516 dmu_tx_t *tx; 3517 int i, freeit, error; 3518 uint64_t n, s, txg; 3519 bufwad_t *packbuf, *bigbuf, *pack, *bigH, *bigT; 3520 uint64_t packobj, packoff, packsize, bigobj, bigoff, bigsize; 3521 uint64_t chunksize = (1000 + ztest_random(1000)) * sizeof (uint64_t); 3522 uint64_t regions = 997; 3523 uint64_t stride = 123456789ULL; 3524 uint64_t width = 40; 3525 int free_percent = 5; 3526 3527 /* 3528 * This test uses two objects, packobj and bigobj, that are always 3529 * updated together (i.e. in the same tx) so that their contents are 3530 * in sync and can be compared. Their contents relate to each other 3531 * in a simple way: packobj is a dense array of 'bufwad' structures, 3532 * while bigobj is a sparse array of the same bufwads. Specifically, 3533 * for any index n, there are three bufwads that should be identical: 3534 * 3535 * packobj, at offset n * sizeof (bufwad_t) 3536 * bigobj, at the head of the nth chunk 3537 * bigobj, at the tail of the nth chunk 3538 * 3539 * The chunk size is arbitrary. It doesn't have to be a power of two, 3540 * and it doesn't have any relation to the object blocksize. 3541 * The only requirement is that it can hold at least two bufwads. 3542 * 3543 * Normally, we write the bufwad to each of these locations. 3544 * However, free_percent of the time we instead write zeroes to 3545 * packobj and perform a dmu_free_range() on bigobj. By comparing 3546 * bigobj to packobj, we can verify that the DMU is correctly 3547 * tracking which parts of an object are allocated and free, 3548 * and that the contents of the allocated blocks are correct. 3549 */ 3550 3551 /* 3552 * Read the directory info. If it's the first time, set things up. 3553 */ 3554 ztest_od_init(&od[0], id, FTAG, 0, DMU_OT_UINT64_OTHER, 0, chunksize); 3555 ztest_od_init(&od[1], id, FTAG, 1, DMU_OT_UINT64_OTHER, 0, chunksize); 3556 3557 if (ztest_object_init(zd, od, sizeof (od), B_FALSE) != 0) 3558 return; 3559 3560 bigobj = od[0].od_object; 3561 packobj = od[1].od_object; 3562 chunksize = od[0].od_gen; 3563 ASSERT(chunksize == od[1].od_gen); 3564 3565 /* 3566 * Prefetch a random chunk of the big object. 3567 * Our aim here is to get some async reads in flight 3568 * for blocks that we may free below; the DMU should 3569 * handle this race correctly. 3570 */ 3571 n = ztest_random(regions) * stride + ztest_random(width); 3572 s = 1 + ztest_random(2 * width - 1); 3573 dmu_prefetch(os, bigobj, n * chunksize, s * chunksize); 3574 3575 /* 3576 * Pick a random index and compute the offsets into packobj and bigobj. 3577 */ 3578 n = ztest_random(regions) * stride + ztest_random(width); 3579 s = 1 + ztest_random(width - 1); 3580 3581 packoff = n * sizeof (bufwad_t); 3582 packsize = s * sizeof (bufwad_t); 3583 3584 bigoff = n * chunksize; 3585 bigsize = s * chunksize; 3586 3587 packbuf = umem_alloc(packsize, UMEM_NOFAIL); 3588 bigbuf = umem_alloc(bigsize, UMEM_NOFAIL); 3589 3590 /* 3591 * free_percent of the time, free a range of bigobj rather than 3592 * overwriting it. 3593 */ 3594 freeit = (ztest_random(100) < free_percent); 3595 3596 /* 3597 * Read the current contents of our objects. 3598 */ 3599 error = dmu_read(os, packobj, packoff, packsize, packbuf, 3600 DMU_READ_PREFETCH); 3601 ASSERT0(error); 3602 error = dmu_read(os, bigobj, bigoff, bigsize, bigbuf, 3603 DMU_READ_PREFETCH); 3604 ASSERT0(error); 3605 3606 /* 3607 * Get a tx for the mods to both packobj and bigobj. 3608 */ 3609 tx = dmu_tx_create(os); 3610 3611 dmu_tx_hold_write(tx, packobj, packoff, packsize); 3612 3613 if (freeit) 3614 dmu_tx_hold_free(tx, bigobj, bigoff, bigsize); 3615 else 3616 dmu_tx_hold_write(tx, bigobj, bigoff, bigsize); 3617 3618 /* This accounts for setting the checksum/compression. */ 3619 dmu_tx_hold_bonus(tx, bigobj); 3620 3621 txg = ztest_tx_assign(tx, TXG_MIGHTWAIT, FTAG); 3622 if (txg == 0) { 3623 umem_free(packbuf, packsize); 3624 umem_free(bigbuf, bigsize); 3625 return; 3626 } 3627 3628 dmu_object_set_checksum(os, bigobj, 3629 (enum zio_checksum)ztest_random_dsl_prop(ZFS_PROP_CHECKSUM), tx); 3630 3631 dmu_object_set_compress(os, bigobj, 3632 (enum zio_compress)ztest_random_dsl_prop(ZFS_PROP_COMPRESSION), tx); 3633 3634 /* 3635 * For each index from n to n + s, verify that the existing bufwad 3636 * in packobj matches the bufwads at the head and tail of the 3637 * corresponding chunk in bigobj. Then update all three bufwads 3638 * with the new values we want to write out. 3639 */ 3640 for (i = 0; i < s; i++) { 3641 /* LINTED */ 3642 pack = (bufwad_t *)((char *)packbuf + i * sizeof (bufwad_t)); 3643 /* LINTED */ 3644 bigH = (bufwad_t *)((char *)bigbuf + i * chunksize); 3645 /* LINTED */ 3646 bigT = (bufwad_t *)((char *)bigH + chunksize) - 1; 3647 3648 ASSERT((uintptr_t)bigH - (uintptr_t)bigbuf < bigsize); 3649 ASSERT((uintptr_t)bigT - (uintptr_t)bigbuf < bigsize); 3650 3651 if (pack->bw_txg > txg) 3652 fatal(0, "future leak: got %llx, open txg is %llx", 3653 pack->bw_txg, txg); 3654 3655 if (pack->bw_data != 0 && pack->bw_index != n + i) 3656 fatal(0, "wrong index: got %llx, wanted %llx+%llx", 3657 pack->bw_index, n, i); 3658 3659 if (bcmp(pack, bigH, sizeof (bufwad_t)) != 0) 3660 fatal(0, "pack/bigH mismatch in %p/%p", pack, bigH); 3661 3662 if (bcmp(pack, bigT, sizeof (bufwad_t)) != 0) 3663 fatal(0, "pack/bigT mismatch in %p/%p", pack, bigT); 3664 3665 if (freeit) { 3666 bzero(pack, sizeof (bufwad_t)); 3667 } else { 3668 pack->bw_index = n + i; 3669 pack->bw_txg = txg; 3670 pack->bw_data = 1 + ztest_random(-2ULL); 3671 } 3672 *bigH = *pack; 3673 *bigT = *pack; 3674 } 3675 3676 /* 3677 * We've verified all the old bufwads, and made new ones. 3678 * Now write them out. 3679 */ 3680 dmu_write(os, packobj, packoff, packsize, packbuf, tx); 3681 3682 if (freeit) { 3683 if (ztest_opts.zo_verbose >= 7) { 3684 (void) printf("freeing offset %llx size %llx" 3685 " txg %llx\n", 3686 (u_longlong_t)bigoff, 3687 (u_longlong_t)bigsize, 3688 (u_longlong_t)txg); 3689 } 3690 VERIFY(0 == dmu_free_range(os, bigobj, bigoff, bigsize, tx)); 3691 } else { 3692 if (ztest_opts.zo_verbose >= 7) { 3693 (void) printf("writing offset %llx size %llx" 3694 " txg %llx\n", 3695 (u_longlong_t)bigoff, 3696 (u_longlong_t)bigsize, 3697 (u_longlong_t)txg); 3698 } 3699 dmu_write(os, bigobj, bigoff, bigsize, bigbuf, tx); 3700 } 3701 3702 dmu_tx_commit(tx); 3703 3704 /* 3705 * Sanity check the stuff we just wrote. 3706 */ 3707 { 3708 void *packcheck = umem_alloc(packsize, UMEM_NOFAIL); 3709 void *bigcheck = umem_alloc(bigsize, UMEM_NOFAIL); 3710 3711 VERIFY(0 == dmu_read(os, packobj, packoff, 3712 packsize, packcheck, DMU_READ_PREFETCH)); 3713 VERIFY(0 == dmu_read(os, bigobj, bigoff, 3714 bigsize, bigcheck, DMU_READ_PREFETCH)); 3715 3716 ASSERT(bcmp(packbuf, packcheck, packsize) == 0); 3717 ASSERT(bcmp(bigbuf, bigcheck, bigsize) == 0); 3718 3719 umem_free(packcheck, packsize); 3720 umem_free(bigcheck, bigsize); 3721 } 3722 3723 umem_free(packbuf, packsize); 3724 umem_free(bigbuf, bigsize); 3725 } 3726 3727 void 3728 compare_and_update_pbbufs(uint64_t s, bufwad_t *packbuf, bufwad_t *bigbuf, 3729 uint64_t bigsize, uint64_t n, uint64_t chunksize, uint64_t txg) 3730 { 3731 uint64_t i; 3732 bufwad_t *pack; 3733 bufwad_t *bigH; 3734 bufwad_t *bigT; 3735 3736 /* 3737 * For each index from n to n + s, verify that the existing bufwad 3738 * in packobj matches the bufwads at the head and tail of the 3739 * corresponding chunk in bigobj. Then update all three bufwads 3740 * with the new values we want to write out. 3741 */ 3742 for (i = 0; i < s; i++) { 3743 /* LINTED */ 3744 pack = (bufwad_t *)((char *)packbuf + i * sizeof (bufwad_t)); 3745 /* LINTED */ 3746 bigH = (bufwad_t *)((char *)bigbuf + i * chunksize); 3747 /* LINTED */ 3748 bigT = (bufwad_t *)((char *)bigH + chunksize) - 1; 3749 3750 ASSERT((uintptr_t)bigH - (uintptr_t)bigbuf < bigsize); 3751 ASSERT((uintptr_t)bigT - (uintptr_t)bigbuf < bigsize); 3752 3753 if (pack->bw_txg > txg) 3754 fatal(0, "future leak: got %llx, open txg is %llx", 3755 pack->bw_txg, txg); 3756 3757 if (pack->bw_data != 0 && pack->bw_index != n + i) 3758 fatal(0, "wrong index: got %llx, wanted %llx+%llx", 3759 pack->bw_index, n, i); 3760 3761 if (bcmp(pack, bigH, sizeof (bufwad_t)) != 0) 3762 fatal(0, "pack/bigH mismatch in %p/%p", pack, bigH); 3763 3764 if (bcmp(pack, bigT, sizeof (bufwad_t)) != 0) 3765 fatal(0, "pack/bigT mismatch in %p/%p", pack, bigT); 3766 3767 pack->bw_index = n + i; 3768 pack->bw_txg = txg; 3769 pack->bw_data = 1 + ztest_random(-2ULL); 3770 3771 *bigH = *pack; 3772 *bigT = *pack; 3773 } 3774 } 3775 3776 void 3777 ztest_dmu_read_write_zcopy(ztest_ds_t *zd, uint64_t id) 3778 { 3779 objset_t *os = zd->zd_os; 3780 ztest_od_t od[2]; 3781 dmu_tx_t *tx; 3782 uint64_t i; 3783 int error; 3784 uint64_t n, s, txg; 3785 bufwad_t *packbuf, *bigbuf; 3786 uint64_t packobj, packoff, packsize, bigobj, bigoff, bigsize; 3787 uint64_t blocksize = ztest_random_blocksize(); 3788 uint64_t chunksize = blocksize; 3789 uint64_t regions = 997; 3790 uint64_t stride = 123456789ULL; 3791 uint64_t width = 9; 3792 dmu_buf_t *bonus_db; 3793 arc_buf_t **bigbuf_arcbufs; 3794 dmu_object_info_t doi; 3795 3796 /* 3797 * This test uses two objects, packobj and bigobj, that are always 3798 * updated together (i.e. in the same tx) so that their contents are 3799 * in sync and can be compared. Their contents relate to each other 3800 * in a simple way: packobj is a dense array of 'bufwad' structures, 3801 * while bigobj is a sparse array of the same bufwads. Specifically, 3802 * for any index n, there are three bufwads that should be identical: 3803 * 3804 * packobj, at offset n * sizeof (bufwad_t) 3805 * bigobj, at the head of the nth chunk 3806 * bigobj, at the tail of the nth chunk 3807 * 3808 * The chunk size is set equal to bigobj block size so that 3809 * dmu_assign_arcbuf() can be tested for object updates. 3810 */ 3811 3812 /* 3813 * Read the directory info. If it's the first time, set things up. 3814 */ 3815 ztest_od_init(&od[0], id, FTAG, 0, DMU_OT_UINT64_OTHER, blocksize, 0); 3816 ztest_od_init(&od[1], id, FTAG, 1, DMU_OT_UINT64_OTHER, 0, chunksize); 3817 3818 if (ztest_object_init(zd, od, sizeof (od), B_FALSE) != 0) 3819 return; 3820 3821 bigobj = od[0].od_object; 3822 packobj = od[1].od_object; 3823 blocksize = od[0].od_blocksize; 3824 chunksize = blocksize; 3825 ASSERT(chunksize == od[1].od_gen); 3826 3827 VERIFY(dmu_object_info(os, bigobj, &doi) == 0); 3828 VERIFY(ISP2(doi.doi_data_block_size)); 3829 VERIFY(chunksize == doi.doi_data_block_size); 3830 VERIFY(chunksize >= 2 * sizeof (bufwad_t)); 3831 3832 /* 3833 * Pick a random index and compute the offsets into packobj and bigobj. 3834 */ 3835 n = ztest_random(regions) * stride + ztest_random(width); 3836 s = 1 + ztest_random(width - 1); 3837 3838 packoff = n * sizeof (bufwad_t); 3839 packsize = s * sizeof (bufwad_t); 3840 3841 bigoff = n * chunksize; 3842 bigsize = s * chunksize; 3843 3844 packbuf = umem_zalloc(packsize, UMEM_NOFAIL); 3845 bigbuf = umem_zalloc(bigsize, UMEM_NOFAIL); 3846 3847 VERIFY3U(0, ==, dmu_bonus_hold(os, bigobj, FTAG, &bonus_db)); 3848 3849 bigbuf_arcbufs = umem_zalloc(2 * s * sizeof (arc_buf_t *), UMEM_NOFAIL); 3850 3851 /* 3852 * Iteration 0 test zcopy for DB_UNCACHED dbufs. 3853 * Iteration 1 test zcopy to already referenced dbufs. 3854 * Iteration 2 test zcopy to dirty dbuf in the same txg. 3855 * Iteration 3 test zcopy to dbuf dirty in previous txg. 3856 * Iteration 4 test zcopy when dbuf is no longer dirty. 3857 * Iteration 5 test zcopy when it can't be done. 3858 * Iteration 6 one more zcopy write. 3859 */ 3860 for (i = 0; i < 7; i++) { 3861 uint64_t j; 3862 uint64_t off; 3863 3864 /* 3865 * In iteration 5 (i == 5) use arcbufs 3866 * that don't match bigobj blksz to test 3867 * dmu_assign_arcbuf() when it can't directly 3868 * assign an arcbuf to a dbuf. 3869 */ 3870 for (j = 0; j < s; j++) { 3871 if (i != 5) { 3872 bigbuf_arcbufs[j] = 3873 dmu_request_arcbuf(bonus_db, chunksize); 3874 } else { 3875 bigbuf_arcbufs[2 * j] = 3876 dmu_request_arcbuf(bonus_db, chunksize / 2); 3877 bigbuf_arcbufs[2 * j + 1] = 3878 dmu_request_arcbuf(bonus_db, chunksize / 2); 3879 } 3880 } 3881 3882 /* 3883 * Get a tx for the mods to both packobj and bigobj. 3884 */ 3885 tx = dmu_tx_create(os); 3886 3887 dmu_tx_hold_write(tx, packobj, packoff, packsize); 3888 dmu_tx_hold_write(tx, bigobj, bigoff, bigsize); 3889 3890 txg = ztest_tx_assign(tx, TXG_MIGHTWAIT, FTAG); 3891 if (txg == 0) { 3892 umem_free(packbuf, packsize); 3893 umem_free(bigbuf, bigsize); 3894 for (j = 0; j < s; j++) { 3895 if (i != 5) { 3896 dmu_return_arcbuf(bigbuf_arcbufs[j]); 3897 } else { 3898 dmu_return_arcbuf( 3899 bigbuf_arcbufs[2 * j]); 3900 dmu_return_arcbuf( 3901 bigbuf_arcbufs[2 * j + 1]); 3902 } 3903 } 3904 umem_free(bigbuf_arcbufs, 2 * s * sizeof (arc_buf_t *)); 3905 dmu_buf_rele(bonus_db, FTAG); 3906 return; 3907 } 3908 3909 /* 3910 * 50% of the time don't read objects in the 1st iteration to 3911 * test dmu_assign_arcbuf() for the case when there're no 3912 * existing dbufs for the specified offsets. 3913 */ 3914 if (i != 0 || ztest_random(2) != 0) { 3915 error = dmu_read(os, packobj, packoff, 3916 packsize, packbuf, DMU_READ_PREFETCH); 3917 ASSERT0(error); 3918 error = dmu_read(os, bigobj, bigoff, bigsize, 3919 bigbuf, DMU_READ_PREFETCH); 3920 ASSERT0(error); 3921 } 3922 compare_and_update_pbbufs(s, packbuf, bigbuf, bigsize, 3923 n, chunksize, txg); 3924 3925 /* 3926 * We've verified all the old bufwads, and made new ones. 3927 * Now write them out. 3928 */ 3929 dmu_write(os, packobj, packoff, packsize, packbuf, tx); 3930 if (ztest_opts.zo_verbose >= 7) { 3931 (void) printf("writing offset %llx size %llx" 3932 " txg %llx\n", 3933 (u_longlong_t)bigoff, 3934 (u_longlong_t)bigsize, 3935 (u_longlong_t)txg); 3936 } 3937 for (off = bigoff, j = 0; j < s; j++, off += chunksize) { 3938 dmu_buf_t *dbt; 3939 if (i != 5) { 3940 bcopy((caddr_t)bigbuf + (off - bigoff), 3941 bigbuf_arcbufs[j]->b_data, chunksize); 3942 } else { 3943 bcopy((caddr_t)bigbuf + (off - bigoff), 3944 bigbuf_arcbufs[2 * j]->b_data, 3945 chunksize / 2); 3946 bcopy((caddr_t)bigbuf + (off - bigoff) + 3947 chunksize / 2, 3948 bigbuf_arcbufs[2 * j + 1]->b_data, 3949 chunksize / 2); 3950 } 3951 3952 if (i == 1) { 3953 VERIFY(dmu_buf_hold(os, bigobj, off, 3954 FTAG, &dbt, DMU_READ_NO_PREFETCH) == 0); 3955 } 3956 if (i != 5) { 3957 dmu_assign_arcbuf(bonus_db, off, 3958 bigbuf_arcbufs[j], tx); 3959 } else { 3960 dmu_assign_arcbuf(bonus_db, off, 3961 bigbuf_arcbufs[2 * j], tx); 3962 dmu_assign_arcbuf(bonus_db, 3963 off + chunksize / 2, 3964 bigbuf_arcbufs[2 * j + 1], tx); 3965 } 3966 if (i == 1) { 3967 dmu_buf_rele(dbt, FTAG); 3968 } 3969 } 3970 dmu_tx_commit(tx); 3971 3972 /* 3973 * Sanity check the stuff we just wrote. 3974 */ 3975 { 3976 void *packcheck = umem_alloc(packsize, UMEM_NOFAIL); 3977 void *bigcheck = umem_alloc(bigsize, UMEM_NOFAIL); 3978 3979 VERIFY(0 == dmu_read(os, packobj, packoff, 3980 packsize, packcheck, DMU_READ_PREFETCH)); 3981 VERIFY(0 == dmu_read(os, bigobj, bigoff, 3982 bigsize, bigcheck, DMU_READ_PREFETCH)); 3983 3984 ASSERT(bcmp(packbuf, packcheck, packsize) == 0); 3985 ASSERT(bcmp(bigbuf, bigcheck, bigsize) == 0); 3986 3987 umem_free(packcheck, packsize); 3988 umem_free(bigcheck, bigsize); 3989 } 3990 if (i == 2) { 3991 txg_wait_open(dmu_objset_pool(os), 0); 3992 } else if (i == 3) { 3993 txg_wait_synced(dmu_objset_pool(os), 0); 3994 } 3995 } 3996 3997 dmu_buf_rele(bonus_db, FTAG); 3998 umem_free(packbuf, packsize); 3999 umem_free(bigbuf, bigsize); 4000 umem_free(bigbuf_arcbufs, 2 * s * sizeof (arc_buf_t *)); 4001 } 4002 4003 /* ARGSUSED */ 4004 void 4005 ztest_dmu_write_parallel(ztest_ds_t *zd, uint64_t id) 4006 { 4007 ztest_od_t od[1]; 4008 uint64_t offset = (1ULL << (ztest_random(20) + 43)) + 4009 (ztest_random(ZTEST_RANGE_LOCKS) << SPA_MAXBLOCKSHIFT); 4010 4011 /* 4012 * Have multiple threads write to large offsets in an object 4013 * to verify that parallel writes to an object -- even to the 4014 * same blocks within the object -- doesn't cause any trouble. 4015 */ 4016 ztest_od_init(&od[0], ID_PARALLEL, FTAG, 0, DMU_OT_UINT64_OTHER, 0, 0); 4017 4018 if (ztest_object_init(zd, od, sizeof (od), B_FALSE) != 0) 4019 return; 4020 4021 while (ztest_random(10) != 0) 4022 ztest_io(zd, od[0].od_object, offset); 4023 } 4024 4025 void 4026 ztest_dmu_prealloc(ztest_ds_t *zd, uint64_t id) 4027 { 4028 ztest_od_t od[1]; 4029 uint64_t offset = (1ULL << (ztest_random(4) + SPA_MAXBLOCKSHIFT)) + 4030 (ztest_random(ZTEST_RANGE_LOCKS) << SPA_MAXBLOCKSHIFT); 4031 uint64_t count = ztest_random(20) + 1; 4032 uint64_t blocksize = ztest_random_blocksize(); 4033 void *data; 4034 4035 ztest_od_init(&od[0], id, FTAG, 0, DMU_OT_UINT64_OTHER, blocksize, 0); 4036 4037 if (ztest_object_init(zd, od, sizeof (od), !ztest_random(2)) != 0) 4038 return; 4039 4040 if (ztest_truncate(zd, od[0].od_object, offset, count * blocksize) != 0) 4041 return; 4042 4043 ztest_prealloc(zd, od[0].od_object, offset, count * blocksize); 4044 4045 data = umem_zalloc(blocksize, UMEM_NOFAIL); 4046 4047 while (ztest_random(count) != 0) { 4048 uint64_t randoff = offset + (ztest_random(count) * blocksize); 4049 if (ztest_write(zd, od[0].od_object, randoff, blocksize, 4050 data) != 0) 4051 break; 4052 while (ztest_random(4) != 0) 4053 ztest_io(zd, od[0].od_object, randoff); 4054 } 4055 4056 umem_free(data, blocksize); 4057 } 4058 4059 /* 4060 * Verify that zap_{create,destroy,add,remove,update} work as expected. 4061 */ 4062 #define ZTEST_ZAP_MIN_INTS 1 4063 #define ZTEST_ZAP_MAX_INTS 4 4064 #define ZTEST_ZAP_MAX_PROPS 1000 4065 4066 void 4067 ztest_zap(ztest_ds_t *zd, uint64_t id) 4068 { 4069 objset_t *os = zd->zd_os; 4070 ztest_od_t od[1]; 4071 uint64_t object; 4072 uint64_t txg, last_txg; 4073 uint64_t value[ZTEST_ZAP_MAX_INTS]; 4074 uint64_t zl_ints, zl_intsize, prop; 4075 int i, ints; 4076 dmu_tx_t *tx; 4077 char propname[100], txgname[100]; 4078 int error; 4079 char *hc[2] = { "s.acl.h", ".s.open.h.hyLZlg" }; 4080 4081 ztest_od_init(&od[0], id, FTAG, 0, DMU_OT_ZAP_OTHER, 0, 0); 4082 4083 if (ztest_object_init(zd, od, sizeof (od), !ztest_random(2)) != 0) 4084 return; 4085 4086 object = od[0].od_object; 4087 4088 /* 4089 * Generate a known hash collision, and verify that 4090 * we can lookup and remove both entries. 4091 */ 4092 tx = dmu_tx_create(os); 4093 dmu_tx_hold_zap(tx, object, B_TRUE, NULL); 4094 txg = ztest_tx_assign(tx, TXG_MIGHTWAIT, FTAG); 4095 if (txg == 0) 4096 return; 4097 for (i = 0; i < 2; i++) { 4098 value[i] = i; 4099 VERIFY3U(0, ==, zap_add(os, object, hc[i], sizeof (uint64_t), 4100 1, &value[i], tx)); 4101 } 4102 for (i = 0; i < 2; i++) { 4103 VERIFY3U(EEXIST, ==, zap_add(os, object, hc[i], 4104 sizeof (uint64_t), 1, &value[i], tx)); 4105 VERIFY3U(0, ==, 4106 zap_length(os, object, hc[i], &zl_intsize, &zl_ints)); 4107 ASSERT3U(zl_intsize, ==, sizeof (uint64_t)); 4108 ASSERT3U(zl_ints, ==, 1); 4109 } 4110 for (i = 0; i < 2; i++) { 4111 VERIFY3U(0, ==, zap_remove(os, object, hc[i], tx)); 4112 } 4113 dmu_tx_commit(tx); 4114 4115 /* 4116 * Generate a buch of random entries. 4117 */ 4118 ints = MAX(ZTEST_ZAP_MIN_INTS, object % ZTEST_ZAP_MAX_INTS); 4119 4120 prop = ztest_random(ZTEST_ZAP_MAX_PROPS); 4121 (void) sprintf(propname, "prop_%llu", (u_longlong_t)prop); 4122 (void) sprintf(txgname, "txg_%llu", (u_longlong_t)prop); 4123 bzero(value, sizeof (value)); 4124 last_txg = 0; 4125 4126 /* 4127 * If these zap entries already exist, validate their contents. 4128 */ 4129 error = zap_length(os, object, txgname, &zl_intsize, &zl_ints); 4130 if (error == 0) { 4131 ASSERT3U(zl_intsize, ==, sizeof (uint64_t)); 4132 ASSERT3U(zl_ints, ==, 1); 4133 4134 VERIFY(zap_lookup(os, object, txgname, zl_intsize, 4135 zl_ints, &last_txg) == 0); 4136 4137 VERIFY(zap_length(os, object, propname, &zl_intsize, 4138 &zl_ints) == 0); 4139 4140 ASSERT3U(zl_intsize, ==, sizeof (uint64_t)); 4141 ASSERT3U(zl_ints, ==, ints); 4142 4143 VERIFY(zap_lookup(os, object, propname, zl_intsize, 4144 zl_ints, value) == 0); 4145 4146 for (i = 0; i < ints; i++) { 4147 ASSERT3U(value[i], ==, last_txg + object + i); 4148 } 4149 } else { 4150 ASSERT3U(error, ==, ENOENT); 4151 } 4152 4153 /* 4154 * Atomically update two entries in our zap object. 4155 * The first is named txg_%llu, and contains the txg 4156 * in which the property was last updated. The second 4157 * is named prop_%llu, and the nth element of its value 4158 * should be txg + object + n. 4159 */ 4160 tx = dmu_tx_create(os); 4161 dmu_tx_hold_zap(tx, object, B_TRUE, NULL); 4162 txg = ztest_tx_assign(tx, TXG_MIGHTWAIT, FTAG); 4163 if (txg == 0) 4164 return; 4165 4166 if (last_txg > txg) 4167 fatal(0, "zap future leak: old %llu new %llu", last_txg, txg); 4168 4169 for (i = 0; i < ints; i++) 4170 value[i] = txg + object + i; 4171 4172 VERIFY3U(0, ==, zap_update(os, object, txgname, sizeof (uint64_t), 4173 1, &txg, tx)); 4174 VERIFY3U(0, ==, zap_update(os, object, propname, sizeof (uint64_t), 4175 ints, value, tx)); 4176 4177 dmu_tx_commit(tx); 4178 4179 /* 4180 * Remove a random pair of entries. 4181 */ 4182 prop = ztest_random(ZTEST_ZAP_MAX_PROPS); 4183 (void) sprintf(propname, "prop_%llu", (u_longlong_t)prop); 4184 (void) sprintf(txgname, "txg_%llu", (u_longlong_t)prop); 4185 4186 error = zap_length(os, object, txgname, &zl_intsize, &zl_ints); 4187 4188 if (error == ENOENT) 4189 return; 4190 4191 ASSERT0(error); 4192 4193 tx = dmu_tx_create(os); 4194 dmu_tx_hold_zap(tx, object, B_TRUE, NULL); 4195 txg = ztest_tx_assign(tx, TXG_MIGHTWAIT, FTAG); 4196 if (txg == 0) 4197 return; 4198 VERIFY3U(0, ==, zap_remove(os, object, txgname, tx)); 4199 VERIFY3U(0, ==, zap_remove(os, object, propname, tx)); 4200 dmu_tx_commit(tx); 4201 } 4202 4203 /* 4204 * Testcase to test the upgrading of a microzap to fatzap. 4205 */ 4206 void 4207 ztest_fzap(ztest_ds_t *zd, uint64_t id) 4208 { 4209 objset_t *os = zd->zd_os; 4210 ztest_od_t od[1]; 4211 uint64_t object, txg; 4212 4213 ztest_od_init(&od[0], id, FTAG, 0, DMU_OT_ZAP_OTHER, 0, 0); 4214 4215 if (ztest_object_init(zd, od, sizeof (od), !ztest_random(2)) != 0) 4216 return; 4217 4218 object = od[0].od_object; 4219 4220 /* 4221 * Add entries to this ZAP and make sure it spills over 4222 * and gets upgraded to a fatzap. Also, since we are adding 4223 * 2050 entries we should see ptrtbl growth and leaf-block split. 4224 */ 4225 for (int i = 0; i < 2050; i++) { 4226 char name[MAXNAMELEN]; 4227 uint64_t value = i; 4228 dmu_tx_t *tx; 4229 int error; 4230 4231 (void) snprintf(name, sizeof (name), "fzap-%llu-%llu", 4232 id, value); 4233 4234 tx = dmu_tx_create(os); 4235 dmu_tx_hold_zap(tx, object, B_TRUE, name); 4236 txg = ztest_tx_assign(tx, TXG_MIGHTWAIT, FTAG); 4237 if (txg == 0) 4238 return; 4239 error = zap_add(os, object, name, sizeof (uint64_t), 1, 4240 &value, tx); 4241 ASSERT(error == 0 || error == EEXIST); 4242 dmu_tx_commit(tx); 4243 } 4244 } 4245 4246 /* ARGSUSED */ 4247 void 4248 ztest_zap_parallel(ztest_ds_t *zd, uint64_t id) 4249 { 4250 objset_t *os = zd->zd_os; 4251 ztest_od_t od[1]; 4252 uint64_t txg, object, count, wsize, wc, zl_wsize, zl_wc; 4253 dmu_tx_t *tx; 4254 int i, namelen, error; 4255 int micro = ztest_random(2); 4256 char name[20], string_value[20]; 4257 void *data; 4258 4259 ztest_od_init(&od[0], ID_PARALLEL, FTAG, micro, DMU_OT_ZAP_OTHER, 0, 0); 4260 4261 if (ztest_object_init(zd, od, sizeof (od), B_FALSE) != 0) 4262 return; 4263 4264 object = od[0].od_object; 4265 4266 /* 4267 * Generate a random name of the form 'xxx.....' where each 4268 * x is a random printable character and the dots are dots. 4269 * There are 94 such characters, and the name length goes from 4270 * 6 to 20, so there are 94^3 * 15 = 12,458,760 possible names. 4271 */ 4272 namelen = ztest_random(sizeof (name) - 5) + 5 + 1; 4273 4274 for (i = 0; i < 3; i++) 4275 name[i] = '!' + ztest_random('~' - '!' + 1); 4276 for (; i < namelen - 1; i++) 4277 name[i] = '.'; 4278 name[i] = '\0'; 4279 4280 if ((namelen & 1) || micro) { 4281 wsize = sizeof (txg); 4282 wc = 1; 4283 data = &txg; 4284 } else { 4285 wsize = 1; 4286 wc = namelen; 4287 data = string_value; 4288 } 4289 4290 count = -1ULL; 4291 VERIFY0(zap_count(os, object, &count)); 4292 ASSERT(count != -1ULL); 4293 4294 /* 4295 * Select an operation: length, lookup, add, update, remove. 4296 */ 4297 i = ztest_random(5); 4298 4299 if (i >= 2) { 4300 tx = dmu_tx_create(os); 4301 dmu_tx_hold_zap(tx, object, B_TRUE, NULL); 4302 txg = ztest_tx_assign(tx, TXG_MIGHTWAIT, FTAG); 4303 if (txg == 0) 4304 return; 4305 bcopy(name, string_value, namelen); 4306 } else { 4307 tx = NULL; 4308 txg = 0; 4309 bzero(string_value, namelen); 4310 } 4311 4312 switch (i) { 4313 4314 case 0: 4315 error = zap_length(os, object, name, &zl_wsize, &zl_wc); 4316 if (error == 0) { 4317 ASSERT3U(wsize, ==, zl_wsize); 4318 ASSERT3U(wc, ==, zl_wc); 4319 } else { 4320 ASSERT3U(error, ==, ENOENT); 4321 } 4322 break; 4323 4324 case 1: 4325 error = zap_lookup(os, object, name, wsize, wc, data); 4326 if (error == 0) { 4327 if (data == string_value && 4328 bcmp(name, data, namelen) != 0) 4329 fatal(0, "name '%s' != val '%s' len %d", 4330 name, data, namelen); 4331 } else { 4332 ASSERT3U(error, ==, ENOENT); 4333 } 4334 break; 4335 4336 case 2: 4337 error = zap_add(os, object, name, wsize, wc, data, tx); 4338 ASSERT(error == 0 || error == EEXIST); 4339 break; 4340 4341 case 3: 4342 VERIFY(zap_update(os, object, name, wsize, wc, data, tx) == 0); 4343 break; 4344 4345 case 4: 4346 error = zap_remove(os, object, name, tx); 4347 ASSERT(error == 0 || error == ENOENT); 4348 break; 4349 } 4350 4351 if (tx != NULL) 4352 dmu_tx_commit(tx); 4353 } 4354 4355 /* 4356 * Commit callback data. 4357 */ 4358 typedef struct ztest_cb_data { 4359 list_node_t zcd_node; 4360 uint64_t zcd_txg; 4361 int zcd_expected_err; 4362 boolean_t zcd_added; 4363 boolean_t zcd_called; 4364 spa_t *zcd_spa; 4365 } ztest_cb_data_t; 4366 4367 /* This is the actual commit callback function */ 4368 static void 4369 ztest_commit_callback(void *arg, int error) 4370 { 4371 ztest_cb_data_t *data = arg; 4372 uint64_t synced_txg; 4373 4374 VERIFY(data != NULL); 4375 VERIFY3S(data->zcd_expected_err, ==, error); 4376 VERIFY(!data->zcd_called); 4377 4378 synced_txg = spa_last_synced_txg(data->zcd_spa); 4379 if (data->zcd_txg > synced_txg) 4380 fatal(0, "commit callback of txg %" PRIu64 " called prematurely" 4381 ", last synced txg = %" PRIu64 "\n", data->zcd_txg, 4382 synced_txg); 4383 4384 data->zcd_called = B_TRUE; 4385 4386 if (error == ECANCELED) { 4387 ASSERT0(data->zcd_txg); 4388 ASSERT(!data->zcd_added); 4389 4390 /* 4391 * The private callback data should be destroyed here, but 4392 * since we are going to check the zcd_called field after 4393 * dmu_tx_abort(), we will destroy it there. 4394 */ 4395 return; 4396 } 4397 4398 /* Was this callback added to the global callback list? */ 4399 if (!data->zcd_added) 4400 goto out; 4401 4402 ASSERT3U(data->zcd_txg, !=, 0); 4403 4404 /* Remove our callback from the list */ 4405 (void) mutex_lock(&zcl.zcl_callbacks_lock); 4406 list_remove(&zcl.zcl_callbacks, data); 4407 (void) mutex_unlock(&zcl.zcl_callbacks_lock); 4408 4409 out: 4410 umem_free(data, sizeof (ztest_cb_data_t)); 4411 } 4412 4413 /* Allocate and initialize callback data structure */ 4414 static ztest_cb_data_t * 4415 ztest_create_cb_data(objset_t *os, uint64_t txg) 4416 { 4417 ztest_cb_data_t *cb_data; 4418 4419 cb_data = umem_zalloc(sizeof (ztest_cb_data_t), UMEM_NOFAIL); 4420 4421 cb_data->zcd_txg = txg; 4422 cb_data->zcd_spa = dmu_objset_spa(os); 4423 4424 return (cb_data); 4425 } 4426 4427 /* 4428 * If a number of txgs equal to this threshold have been created after a commit 4429 * callback has been registered but not called, then we assume there is an 4430 * implementation bug. 4431 */ 4432 #define ZTEST_COMMIT_CALLBACK_THRESH (TXG_CONCURRENT_STATES + 2) 4433 4434 /* 4435 * Commit callback test. 4436 */ 4437 void 4438 ztest_dmu_commit_callbacks(ztest_ds_t *zd, uint64_t id) 4439 { 4440 objset_t *os = zd->zd_os; 4441 ztest_od_t od[1]; 4442 dmu_tx_t *tx; 4443 ztest_cb_data_t *cb_data[3], *tmp_cb; 4444 uint64_t old_txg, txg; 4445 int i, error; 4446 4447 ztest_od_init(&od[0], id, FTAG, 0, DMU_OT_UINT64_OTHER, 0, 0); 4448 4449 if (ztest_object_init(zd, od, sizeof (od), B_FALSE) != 0) 4450 return; 4451 4452 tx = dmu_tx_create(os); 4453 4454 cb_data[0] = ztest_create_cb_data(os, 0); 4455 dmu_tx_callback_register(tx, ztest_commit_callback, cb_data[0]); 4456 4457 dmu_tx_hold_write(tx, od[0].od_object, 0, sizeof (uint64_t)); 4458 4459 /* Every once in a while, abort the transaction on purpose */ 4460 if (ztest_random(100) == 0) 4461 error = -1; 4462 4463 if (!error) 4464 error = dmu_tx_assign(tx, TXG_NOWAIT); 4465 4466 txg = error ? 0 : dmu_tx_get_txg(tx); 4467 4468 cb_data[0]->zcd_txg = txg; 4469 cb_data[1] = ztest_create_cb_data(os, txg); 4470 dmu_tx_callback_register(tx, ztest_commit_callback, cb_data[1]); 4471 4472 if (error) { 4473 /* 4474 * It's not a strict requirement to call the registered 4475 * callbacks from inside dmu_tx_abort(), but that's what 4476 * it's supposed to happen in the current implementation 4477 * so we will check for that. 4478 */ 4479 for (i = 0; i < 2; i++) { 4480 cb_data[i]->zcd_expected_err = ECANCELED; 4481 VERIFY(!cb_data[i]->zcd_called); 4482 } 4483 4484 dmu_tx_abort(tx); 4485 4486 for (i = 0; i < 2; i++) { 4487 VERIFY(cb_data[i]->zcd_called); 4488 umem_free(cb_data[i], sizeof (ztest_cb_data_t)); 4489 } 4490 4491 return; 4492 } 4493 4494 cb_data[2] = ztest_create_cb_data(os, txg); 4495 dmu_tx_callback_register(tx, ztest_commit_callback, cb_data[2]); 4496 4497 /* 4498 * Read existing data to make sure there isn't a future leak. 4499 */ 4500 VERIFY(0 == dmu_read(os, od[0].od_object, 0, sizeof (uint64_t), 4501 &old_txg, DMU_READ_PREFETCH)); 4502 4503 if (old_txg > txg) 4504 fatal(0, "future leak: got %" PRIu64 ", open txg is %" PRIu64, 4505 old_txg, txg); 4506 4507 dmu_write(os, od[0].od_object, 0, sizeof (uint64_t), &txg, tx); 4508 4509 (void) mutex_lock(&zcl.zcl_callbacks_lock); 4510 4511 /* 4512 * Since commit callbacks don't have any ordering requirement and since 4513 * it is theoretically possible for a commit callback to be called 4514 * after an arbitrary amount of time has elapsed since its txg has been 4515 * synced, it is difficult to reliably determine whether a commit 4516 * callback hasn't been called due to high load or due to a flawed 4517 * implementation. 4518 * 4519 * In practice, we will assume that if after a certain number of txgs a 4520 * commit callback hasn't been called, then most likely there's an 4521 * implementation bug.. 4522 */ 4523 tmp_cb = list_head(&zcl.zcl_callbacks); 4524 if (tmp_cb != NULL && 4525 (txg - ZTEST_COMMIT_CALLBACK_THRESH) > tmp_cb->zcd_txg) { 4526 fatal(0, "Commit callback threshold exceeded, oldest txg: %" 4527 PRIu64 ", open txg: %" PRIu64 "\n", tmp_cb->zcd_txg, txg); 4528 } 4529 4530 /* 4531 * Let's find the place to insert our callbacks. 4532 * 4533 * Even though the list is ordered by txg, it is possible for the 4534 * insertion point to not be the end because our txg may already be 4535 * quiescing at this point and other callbacks in the open txg 4536 * (from other objsets) may have sneaked in. 4537 */ 4538 tmp_cb = list_tail(&zcl.zcl_callbacks); 4539 while (tmp_cb != NULL && tmp_cb->zcd_txg > txg) 4540 tmp_cb = list_prev(&zcl.zcl_callbacks, tmp_cb); 4541 4542 /* Add the 3 callbacks to the list */ 4543 for (i = 0; i < 3; i++) { 4544 if (tmp_cb == NULL) 4545 list_insert_head(&zcl.zcl_callbacks, cb_data[i]); 4546 else 4547 list_insert_after(&zcl.zcl_callbacks, tmp_cb, 4548 cb_data[i]); 4549 4550 cb_data[i]->zcd_added = B_TRUE; 4551 VERIFY(!cb_data[i]->zcd_called); 4552 4553 tmp_cb = cb_data[i]; 4554 } 4555 4556 (void) mutex_unlock(&zcl.zcl_callbacks_lock); 4557 4558 dmu_tx_commit(tx); 4559 } 4560 4561 /* ARGSUSED */ 4562 void 4563 ztest_dsl_prop_get_set(ztest_ds_t *zd, uint64_t id) 4564 { 4565 zfs_prop_t proplist[] = { 4566 ZFS_PROP_CHECKSUM, 4567 ZFS_PROP_COMPRESSION, 4568 ZFS_PROP_COPIES, 4569 ZFS_PROP_DEDUP 4570 }; 4571 4572 (void) rw_rdlock(&ztest_name_lock); 4573 4574 for (int p = 0; p < sizeof (proplist) / sizeof (proplist[0]); p++) 4575 (void) ztest_dsl_prop_set_uint64(zd->zd_name, proplist[p], 4576 ztest_random_dsl_prop(proplist[p]), (int)ztest_random(2)); 4577 4578 (void) rw_unlock(&ztest_name_lock); 4579 } 4580 4581 /* ARGSUSED */ 4582 void 4583 ztest_spa_prop_get_set(ztest_ds_t *zd, uint64_t id) 4584 { 4585 nvlist_t *props = NULL; 4586 4587 (void) rw_rdlock(&ztest_name_lock); 4588 4589 (void) ztest_spa_prop_set_uint64(ZPOOL_PROP_DEDUPDITTO, 4590 ZIO_DEDUPDITTO_MIN + ztest_random(ZIO_DEDUPDITTO_MIN)); 4591 4592 VERIFY0(spa_prop_get(ztest_spa, &props)); 4593 4594 if (ztest_opts.zo_verbose >= 6) 4595 dump_nvlist(props, 4); 4596 4597 nvlist_free(props); 4598 4599 (void) rw_unlock(&ztest_name_lock); 4600 } 4601 4602 static int 4603 user_release_one(const char *snapname, const char *holdname) 4604 { 4605 nvlist_t *snaps, *holds; 4606 int error; 4607 4608 snaps = fnvlist_alloc(); 4609 holds = fnvlist_alloc(); 4610 fnvlist_add_boolean(holds, holdname); 4611 fnvlist_add_nvlist(snaps, snapname, holds); 4612 fnvlist_free(holds); 4613 error = dsl_dataset_user_release(snaps, NULL); 4614 fnvlist_free(snaps); 4615 return (error); 4616 } 4617 4618 /* 4619 * Test snapshot hold/release and deferred destroy. 4620 */ 4621 void 4622 ztest_dmu_snapshot_hold(ztest_ds_t *zd, uint64_t id) 4623 { 4624 int error; 4625 objset_t *os = zd->zd_os; 4626 objset_t *origin; 4627 char snapname[100]; 4628 char fullname[100]; 4629 char clonename[100]; 4630 char tag[100]; 4631 char osname[MAXNAMELEN]; 4632 nvlist_t *holds; 4633 4634 (void) rw_rdlock(&ztest_name_lock); 4635 4636 dmu_objset_name(os, osname); 4637 4638 (void) snprintf(snapname, sizeof (snapname), "sh1_%llu", id); 4639 (void) snprintf(fullname, sizeof (fullname), "%s@%s", osname, snapname); 4640 (void) snprintf(clonename, sizeof (clonename), 4641 "%s/ch1_%llu", osname, id); 4642 (void) snprintf(tag, sizeof (tag), "tag_%llu", id); 4643 4644 /* 4645 * Clean up from any previous run. 4646 */ 4647 error = dsl_destroy_head(clonename); 4648 if (error != ENOENT) 4649 ASSERT0(error); 4650 error = user_release_one(fullname, tag); 4651 if (error != ESRCH && error != ENOENT) 4652 ASSERT0(error); 4653 error = dsl_destroy_snapshot(fullname, B_FALSE); 4654 if (error != ENOENT) 4655 ASSERT0(error); 4656 4657 /* 4658 * Create snapshot, clone it, mark snap for deferred destroy, 4659 * destroy clone, verify snap was also destroyed. 4660 */ 4661 error = dmu_objset_snapshot_one(osname, snapname); 4662 if (error) { 4663 if (error == ENOSPC) { 4664 ztest_record_enospc("dmu_objset_snapshot"); 4665 goto out; 4666 } 4667 fatal(0, "dmu_objset_snapshot(%s) = %d", fullname, error); 4668 } 4669 4670 error = dmu_objset_clone(clonename, fullname); 4671 if (error) { 4672 if (error == ENOSPC) { 4673 ztest_record_enospc("dmu_objset_clone"); 4674 goto out; 4675 } 4676 fatal(0, "dmu_objset_clone(%s) = %d", clonename, error); 4677 } 4678 4679 error = dsl_destroy_snapshot(fullname, B_TRUE); 4680 if (error) { 4681 fatal(0, "dsl_destroy_snapshot(%s, B_TRUE) = %d", 4682 fullname, error); 4683 } 4684 4685 error = dsl_destroy_head(clonename); 4686 if (error) 4687 fatal(0, "dsl_destroy_head(%s) = %d", clonename, error); 4688 4689 error = dmu_objset_hold(fullname, FTAG, &origin); 4690 if (error != ENOENT) 4691 fatal(0, "dmu_objset_hold(%s) = %d", fullname, error); 4692 4693 /* 4694 * Create snapshot, add temporary hold, verify that we can't 4695 * destroy a held snapshot, mark for deferred destroy, 4696 * release hold, verify snapshot was destroyed. 4697 */ 4698 error = dmu_objset_snapshot_one(osname, snapname); 4699 if (error) { 4700 if (error == ENOSPC) { 4701 ztest_record_enospc("dmu_objset_snapshot"); 4702 goto out; 4703 } 4704 fatal(0, "dmu_objset_snapshot(%s) = %d", fullname, error); 4705 } 4706 4707 holds = fnvlist_alloc(); 4708 fnvlist_add_string(holds, fullname, tag); 4709 error = dsl_dataset_user_hold(holds, 0, NULL); 4710 fnvlist_free(holds); 4711 4712 if (error) 4713 fatal(0, "dsl_dataset_user_hold(%s)", fullname, tag); 4714 4715 error = dsl_destroy_snapshot(fullname, B_FALSE); 4716 if (error != EBUSY) { 4717 fatal(0, "dsl_destroy_snapshot(%s, B_FALSE) = %d", 4718 fullname, error); 4719 } 4720 4721 error = dsl_destroy_snapshot(fullname, B_TRUE); 4722 if (error) { 4723 fatal(0, "dsl_destroy_snapshot(%s, B_TRUE) = %d", 4724 fullname, error); 4725 } 4726 4727 error = user_release_one(fullname, tag); 4728 if (error) 4729 fatal(0, "user_release_one(%s, %s) = %d", fullname, tag, error); 4730 4731 VERIFY3U(dmu_objset_hold(fullname, FTAG, &origin), ==, ENOENT); 4732 4733 out: 4734 (void) rw_unlock(&ztest_name_lock); 4735 } 4736 4737 /* 4738 * Inject random faults into the on-disk data. 4739 */ 4740 /* ARGSUSED */ 4741 void 4742 ztest_fault_inject(ztest_ds_t *zd, uint64_t id) 4743 { 4744 ztest_shared_t *zs = ztest_shared; 4745 spa_t *spa = ztest_spa; 4746 int fd; 4747 uint64_t offset; 4748 uint64_t leaves; 4749 uint64_t bad = 0x1990c0ffeedecade; 4750 uint64_t top, leaf; 4751 char path0[MAXPATHLEN]; 4752 char pathrand[MAXPATHLEN]; 4753 size_t fsize; 4754 int bshift = SPA_MAXBLOCKSHIFT + 2; /* don't scrog all labels */ 4755 int iters = 1000; 4756 int maxfaults; 4757 int mirror_save; 4758 vdev_t *vd0 = NULL; 4759 uint64_t guid0 = 0; 4760 boolean_t islog = B_FALSE; 4761 4762 VERIFY(mutex_lock(&ztest_vdev_lock) == 0); 4763 maxfaults = MAXFAULTS(); 4764 leaves = MAX(zs->zs_mirrors, 1) * ztest_opts.zo_raidz; 4765 mirror_save = zs->zs_mirrors; 4766 VERIFY(mutex_unlock(&ztest_vdev_lock) == 0); 4767 4768 ASSERT(leaves >= 1); 4769 4770 /* 4771 * Grab the name lock as reader. There are some operations 4772 * which don't like to have their vdevs changed while 4773 * they are in progress (i.e. spa_change_guid). Those 4774 * operations will have grabbed the name lock as writer. 4775 */ 4776 (void) rw_rdlock(&ztest_name_lock); 4777 4778 /* 4779 * We need SCL_STATE here because we're going to look at vd0->vdev_tsd. 4780 */ 4781 spa_config_enter(spa, SCL_STATE, FTAG, RW_READER); 4782 4783 if (ztest_random(2) == 0) { 4784 /* 4785 * Inject errors on a normal data device or slog device. 4786 */ 4787 top = ztest_random_vdev_top(spa, B_TRUE); 4788 leaf = ztest_random(leaves) + zs->zs_splits; 4789 4790 /* 4791 * Generate paths to the first leaf in this top-level vdev, 4792 * and to the random leaf we selected. We'll induce transient 4793 * write failures and random online/offline activity on leaf 0, 4794 * and we'll write random garbage to the randomly chosen leaf. 4795 */ 4796 (void) snprintf(path0, sizeof (path0), ztest_dev_template, 4797 ztest_opts.zo_dir, ztest_opts.zo_pool, 4798 top * leaves + zs->zs_splits); 4799 (void) snprintf(pathrand, sizeof (pathrand), ztest_dev_template, 4800 ztest_opts.zo_dir, ztest_opts.zo_pool, 4801 top * leaves + leaf); 4802 4803 vd0 = vdev_lookup_by_path(spa->spa_root_vdev, path0); 4804 if (vd0 != NULL && vd0->vdev_top->vdev_islog) 4805 islog = B_TRUE; 4806 4807 /* 4808 * If the top-level vdev needs to be resilvered 4809 * then we only allow faults on the device that is 4810 * resilvering. 4811 */ 4812 if (vd0 != NULL && maxfaults != 1 && 4813 (!vdev_resilver_needed(vd0->vdev_top, NULL, NULL) || 4814 vd0->vdev_resilver_txg != 0)) { 4815 /* 4816 * Make vd0 explicitly claim to be unreadable, 4817 * or unwriteable, or reach behind its back 4818 * and close the underlying fd. We can do this if 4819 * maxfaults == 0 because we'll fail and reexecute, 4820 * and we can do it if maxfaults >= 2 because we'll 4821 * have enough redundancy. If maxfaults == 1, the 4822 * combination of this with injection of random data 4823 * corruption below exceeds the pool's fault tolerance. 4824 */ 4825 vdev_file_t *vf = vd0->vdev_tsd; 4826 4827 if (vf != NULL && ztest_random(3) == 0) { 4828 (void) close(vf->vf_vnode->v_fd); 4829 vf->vf_vnode->v_fd = -1; 4830 } else if (ztest_random(2) == 0) { 4831 vd0->vdev_cant_read = B_TRUE; 4832 } else { 4833 vd0->vdev_cant_write = B_TRUE; 4834 } 4835 guid0 = vd0->vdev_guid; 4836 } 4837 } else { 4838 /* 4839 * Inject errors on an l2cache device. 4840 */ 4841 spa_aux_vdev_t *sav = &spa->spa_l2cache; 4842 4843 if (sav->sav_count == 0) { 4844 spa_config_exit(spa, SCL_STATE, FTAG); 4845 (void) rw_unlock(&ztest_name_lock); 4846 return; 4847 } 4848 vd0 = sav->sav_vdevs[ztest_random(sav->sav_count)]; 4849 guid0 = vd0->vdev_guid; 4850 (void) strcpy(path0, vd0->vdev_path); 4851 (void) strcpy(pathrand, vd0->vdev_path); 4852 4853 leaf = 0; 4854 leaves = 1; 4855 maxfaults = INT_MAX; /* no limit on cache devices */ 4856 } 4857 4858 spa_config_exit(spa, SCL_STATE, FTAG); 4859 (void) rw_unlock(&ztest_name_lock); 4860 4861 /* 4862 * If we can tolerate two or more faults, or we're dealing 4863 * with a slog, randomly online/offline vd0. 4864 */ 4865 if ((maxfaults >= 2 || islog) && guid0 != 0) { 4866 if (ztest_random(10) < 6) { 4867 int flags = (ztest_random(2) == 0 ? 4868 ZFS_OFFLINE_TEMPORARY : 0); 4869 4870 /* 4871 * We have to grab the zs_name_lock as writer to 4872 * prevent a race between offlining a slog and 4873 * destroying a dataset. Offlining the slog will 4874 * grab a reference on the dataset which may cause 4875 * dmu_objset_destroy() to fail with EBUSY thus 4876 * leaving the dataset in an inconsistent state. 4877 */ 4878 if (islog) 4879 (void) rw_wrlock(&ztest_name_lock); 4880 4881 VERIFY(vdev_offline(spa, guid0, flags) != EBUSY); 4882 4883 if (islog) 4884 (void) rw_unlock(&ztest_name_lock); 4885 } else { 4886 /* 4887 * Ideally we would like to be able to randomly 4888 * call vdev_[on|off]line without holding locks 4889 * to force unpredictable failures but the side 4890 * effects of vdev_[on|off]line prevent us from 4891 * doing so. We grab the ztest_vdev_lock here to 4892 * prevent a race between injection testing and 4893 * aux_vdev removal. 4894 */ 4895 VERIFY(mutex_lock(&ztest_vdev_lock) == 0); 4896 (void) vdev_online(spa, guid0, 0, NULL); 4897 VERIFY(mutex_unlock(&ztest_vdev_lock) == 0); 4898 } 4899 } 4900 4901 if (maxfaults == 0) 4902 return; 4903 4904 /* 4905 * We have at least single-fault tolerance, so inject data corruption. 4906 */ 4907 fd = open(pathrand, O_RDWR); 4908 4909 if (fd == -1) /* we hit a gap in the device namespace */ 4910 return; 4911 4912 fsize = lseek(fd, 0, SEEK_END); 4913 4914 while (--iters != 0) { 4915 offset = ztest_random(fsize / (leaves << bshift)) * 4916 (leaves << bshift) + (leaf << bshift) + 4917 (ztest_random(1ULL << (bshift - 1)) & -8ULL); 4918 4919 if (offset >= fsize) 4920 continue; 4921 4922 VERIFY(mutex_lock(&ztest_vdev_lock) == 0); 4923 if (mirror_save != zs->zs_mirrors) { 4924 VERIFY(mutex_unlock(&ztest_vdev_lock) == 0); 4925 (void) close(fd); 4926 return; 4927 } 4928 4929 if (pwrite(fd, &bad, sizeof (bad), offset) != sizeof (bad)) 4930 fatal(1, "can't inject bad word at 0x%llx in %s", 4931 offset, pathrand); 4932 4933 VERIFY(mutex_unlock(&ztest_vdev_lock) == 0); 4934 4935 if (ztest_opts.zo_verbose >= 7) 4936 (void) printf("injected bad word into %s," 4937 " offset 0x%llx\n", pathrand, (u_longlong_t)offset); 4938 } 4939 4940 (void) close(fd); 4941 } 4942 4943 /* 4944 * Verify that DDT repair works as expected. 4945 */ 4946 void 4947 ztest_ddt_repair(ztest_ds_t *zd, uint64_t id) 4948 { 4949 ztest_shared_t *zs = ztest_shared; 4950 spa_t *spa = ztest_spa; 4951 objset_t *os = zd->zd_os; 4952 ztest_od_t od[1]; 4953 uint64_t object, blocksize, txg, pattern, psize; 4954 enum zio_checksum checksum = spa_dedup_checksum(spa); 4955 dmu_buf_t *db; 4956 dmu_tx_t *tx; 4957 void *buf; 4958 blkptr_t blk; 4959 int copies = 2 * ZIO_DEDUPDITTO_MIN; 4960 4961 blocksize = ztest_random_blocksize(); 4962 blocksize = MIN(blocksize, 2048); /* because we write so many */ 4963 4964 ztest_od_init(&od[0], id, FTAG, 0, DMU_OT_UINT64_OTHER, blocksize, 0); 4965 4966 if (ztest_object_init(zd, od, sizeof (od), B_FALSE) != 0) 4967 return; 4968 4969 /* 4970 * Take the name lock as writer to prevent anyone else from changing 4971 * the pool and dataset properies we need to maintain during this test. 4972 */ 4973 (void) rw_wrlock(&ztest_name_lock); 4974 4975 if (ztest_dsl_prop_set_uint64(zd->zd_name, ZFS_PROP_DEDUP, checksum, 4976 B_FALSE) != 0 || 4977 ztest_dsl_prop_set_uint64(zd->zd_name, ZFS_PROP_COPIES, 1, 4978 B_FALSE) != 0) { 4979 (void) rw_unlock(&ztest_name_lock); 4980 return; 4981 } 4982 4983 object = od[0].od_object; 4984 blocksize = od[0].od_blocksize; 4985 pattern = zs->zs_guid ^ dmu_objset_fsid_guid(os); 4986 4987 ASSERT(object != 0); 4988 4989 tx = dmu_tx_create(os); 4990 dmu_tx_hold_write(tx, object, 0, copies * blocksize); 4991 txg = ztest_tx_assign(tx, TXG_WAIT, FTAG); 4992 if (txg == 0) { 4993 (void) rw_unlock(&ztest_name_lock); 4994 return; 4995 } 4996 4997 /* 4998 * Write all the copies of our block. 4999 */ 5000 for (int i = 0; i < copies; i++) { 5001 uint64_t offset = i * blocksize; 5002 int error = dmu_buf_hold(os, object, offset, FTAG, &db, 5003 DMU_READ_NO_PREFETCH); 5004 if (error != 0) { 5005 fatal(B_FALSE, "dmu_buf_hold(%p, %llu, %llu) = %u", 5006 os, (long long)object, (long long) offset, error); 5007 } 5008 ASSERT(db->db_offset == offset); 5009 ASSERT(db->db_size == blocksize); 5010 ASSERT(ztest_pattern_match(db->db_data, db->db_size, pattern) || 5011 ztest_pattern_match(db->db_data, db->db_size, 0ULL)); 5012 dmu_buf_will_fill(db, tx); 5013 ztest_pattern_set(db->db_data, db->db_size, pattern); 5014 dmu_buf_rele(db, FTAG); 5015 } 5016 5017 dmu_tx_commit(tx); 5018 txg_wait_synced(spa_get_dsl(spa), txg); 5019 5020 /* 5021 * Find out what block we got. 5022 */ 5023 VERIFY0(dmu_buf_hold(os, object, 0, FTAG, &db, 5024 DMU_READ_NO_PREFETCH)); 5025 blk = *((dmu_buf_impl_t *)db)->db_blkptr; 5026 dmu_buf_rele(db, FTAG); 5027 5028 /* 5029 * Damage the block. Dedup-ditto will save us when we read it later. 5030 */ 5031 psize = BP_GET_PSIZE(&blk); 5032 buf = zio_buf_alloc(psize); 5033 ztest_pattern_set(buf, psize, ~pattern); 5034 5035 (void) zio_wait(zio_rewrite(NULL, spa, 0, &blk, 5036 buf, psize, NULL, NULL, ZIO_PRIORITY_SYNC_WRITE, 5037 ZIO_FLAG_CANFAIL | ZIO_FLAG_INDUCE_DAMAGE, NULL)); 5038 5039 zio_buf_free(buf, psize); 5040 5041 (void) rw_unlock(&ztest_name_lock); 5042 } 5043 5044 /* 5045 * Scrub the pool. 5046 */ 5047 /* ARGSUSED */ 5048 void 5049 ztest_scrub(ztest_ds_t *zd, uint64_t id) 5050 { 5051 spa_t *spa = ztest_spa; 5052 5053 (void) spa_scan(spa, POOL_SCAN_SCRUB); 5054 (void) poll(NULL, 0, 100); /* wait a moment, then force a restart */ 5055 (void) spa_scan(spa, POOL_SCAN_SCRUB); 5056 } 5057 5058 /* 5059 * Change the guid for the pool. 5060 */ 5061 /* ARGSUSED */ 5062 void 5063 ztest_reguid(ztest_ds_t *zd, uint64_t id) 5064 { 5065 spa_t *spa = ztest_spa; 5066 uint64_t orig, load; 5067 int error; 5068 5069 orig = spa_guid(spa); 5070 load = spa_load_guid(spa); 5071 5072 (void) rw_wrlock(&ztest_name_lock); 5073 error = spa_change_guid(spa); 5074 (void) rw_unlock(&ztest_name_lock); 5075 5076 if (error != 0) 5077 return; 5078 5079 if (ztest_opts.zo_verbose >= 4) { 5080 (void) printf("Changed guid old %llu -> %llu\n", 5081 (u_longlong_t)orig, (u_longlong_t)spa_guid(spa)); 5082 } 5083 5084 VERIFY3U(orig, !=, spa_guid(spa)); 5085 VERIFY3U(load, ==, spa_load_guid(spa)); 5086 } 5087 5088 /* 5089 * Rename the pool to a different name and then rename it back. 5090 */ 5091 /* ARGSUSED */ 5092 void 5093 ztest_spa_rename(ztest_ds_t *zd, uint64_t id) 5094 { 5095 char *oldname, *newname; 5096 spa_t *spa; 5097 5098 (void) rw_wrlock(&ztest_name_lock); 5099 5100 oldname = ztest_opts.zo_pool; 5101 newname = umem_alloc(strlen(oldname) + 5, UMEM_NOFAIL); 5102 (void) strcpy(newname, oldname); 5103 (void) strcat(newname, "_tmp"); 5104 5105 /* 5106 * Do the rename 5107 */ 5108 VERIFY3U(0, ==, spa_rename(oldname, newname)); 5109 5110 /* 5111 * Try to open it under the old name, which shouldn't exist 5112 */ 5113 VERIFY3U(ENOENT, ==, spa_open(oldname, &spa, FTAG)); 5114 5115 /* 5116 * Open it under the new name and make sure it's still the same spa_t. 5117 */ 5118 VERIFY3U(0, ==, spa_open(newname, &spa, FTAG)); 5119 5120 ASSERT(spa == ztest_spa); 5121 spa_close(spa, FTAG); 5122 5123 /* 5124 * Rename it back to the original 5125 */ 5126 VERIFY3U(0, ==, spa_rename(newname, oldname)); 5127 5128 /* 5129 * Make sure it can still be opened 5130 */ 5131 VERIFY3U(0, ==, spa_open(oldname, &spa, FTAG)); 5132 5133 ASSERT(spa == ztest_spa); 5134 spa_close(spa, FTAG); 5135 5136 umem_free(newname, strlen(newname) + 1); 5137 5138 (void) rw_unlock(&ztest_name_lock); 5139 } 5140 5141 /* 5142 * Verify pool integrity by running zdb. 5143 */ 5144 static void 5145 ztest_run_zdb(char *pool) 5146 { 5147 int status; 5148 char zdb[MAXPATHLEN + MAXNAMELEN + 20]; 5149 char zbuf[1024]; 5150 char *bin; 5151 char *ztest; 5152 char *isa; 5153 int isalen; 5154 FILE *fp; 5155 5156 (void) realpath(getexecname(), zdb); 5157 5158 /* zdb lives in /usr/sbin, while ztest lives in /usr/bin */ 5159 bin = strstr(zdb, "/usr/bin/"); 5160 ztest = strstr(bin, "/ztest"); 5161 isa = bin + 8; 5162 isalen = ztest - isa; 5163 isa = strdup(isa); 5164 /* LINTED */ 5165 (void) sprintf(bin, 5166 "/usr/sbin%.*s/zdb -bcc%s%s -U %s %s", 5167 isalen, 5168 isa, 5169 ztest_opts.zo_verbose >= 3 ? "s" : "", 5170 ztest_opts.zo_verbose >= 4 ? "v" : "", 5171 spa_config_path, 5172 pool); 5173 free(isa); 5174 5175 if (ztest_opts.zo_verbose >= 5) 5176 (void) printf("Executing %s\n", strstr(zdb, "zdb ")); 5177 5178 fp = popen(zdb, "r"); 5179 5180 while (fgets(zbuf, sizeof (zbuf), fp) != NULL) 5181 if (ztest_opts.zo_verbose >= 3) 5182 (void) printf("%s", zbuf); 5183 5184 status = pclose(fp); 5185 5186 if (status == 0) 5187 return; 5188 5189 ztest_dump_core = 0; 5190 if (WIFEXITED(status)) 5191 fatal(0, "'%s' exit code %d", zdb, WEXITSTATUS(status)); 5192 else 5193 fatal(0, "'%s' died with signal %d", zdb, WTERMSIG(status)); 5194 } 5195 5196 static void 5197 ztest_walk_pool_directory(char *header) 5198 { 5199 spa_t *spa = NULL; 5200 5201 if (ztest_opts.zo_verbose >= 6) 5202 (void) printf("%s\n", header); 5203 5204 mutex_enter(&spa_namespace_lock); 5205 while ((spa = spa_next(spa)) != NULL) 5206 if (ztest_opts.zo_verbose >= 6) 5207 (void) printf("\t%s\n", spa_name(spa)); 5208 mutex_exit(&spa_namespace_lock); 5209 } 5210 5211 static void 5212 ztest_spa_import_export(char *oldname, char *newname) 5213 { 5214 nvlist_t *config, *newconfig; 5215 uint64_t pool_guid; 5216 spa_t *spa; 5217 int error; 5218 5219 if (ztest_opts.zo_verbose >= 4) { 5220 (void) printf("import/export: old = %s, new = %s\n", 5221 oldname, newname); 5222 } 5223 5224 /* 5225 * Clean up from previous runs. 5226 */ 5227 (void) spa_destroy(newname); 5228 5229 /* 5230 * Get the pool's configuration and guid. 5231 */ 5232 VERIFY3U(0, ==, spa_open(oldname, &spa, FTAG)); 5233 5234 /* 5235 * Kick off a scrub to tickle scrub/export races. 5236 */ 5237 if (ztest_random(2) == 0) 5238 (void) spa_scan(spa, POOL_SCAN_SCRUB); 5239 5240 pool_guid = spa_guid(spa); 5241 spa_close(spa, FTAG); 5242 5243 ztest_walk_pool_directory("pools before export"); 5244 5245 /* 5246 * Export it. 5247 */ 5248 VERIFY3U(0, ==, spa_export(oldname, &config, B_FALSE, B_FALSE)); 5249 5250 ztest_walk_pool_directory("pools after export"); 5251 5252 /* 5253 * Try to import it. 5254 */ 5255 newconfig = spa_tryimport(config); 5256 ASSERT(newconfig != NULL); 5257 nvlist_free(newconfig); 5258 5259 /* 5260 * Import it under the new name. 5261 */ 5262 error = spa_import(newname, config, NULL, 0); 5263 if (error != 0) { 5264 dump_nvlist(config, 0); 5265 fatal(B_FALSE, "couldn't import pool %s as %s: error %u", 5266 oldname, newname, error); 5267 } 5268 5269 ztest_walk_pool_directory("pools after import"); 5270 5271 /* 5272 * Try to import it again -- should fail with EEXIST. 5273 */ 5274 VERIFY3U(EEXIST, ==, spa_import(newname, config, NULL, 0)); 5275 5276 /* 5277 * Try to import it under a different name -- should fail with EEXIST. 5278 */ 5279 VERIFY3U(EEXIST, ==, spa_import(oldname, config, NULL, 0)); 5280 5281 /* 5282 * Verify that the pool is no longer visible under the old name. 5283 */ 5284 VERIFY3U(ENOENT, ==, spa_open(oldname, &spa, FTAG)); 5285 5286 /* 5287 * Verify that we can open and close the pool using the new name. 5288 */ 5289 VERIFY3U(0, ==, spa_open(newname, &spa, FTAG)); 5290 ASSERT(pool_guid == spa_guid(spa)); 5291 spa_close(spa, FTAG); 5292 5293 nvlist_free(config); 5294 } 5295 5296 static void 5297 ztest_resume(spa_t *spa) 5298 { 5299 if (spa_suspended(spa) && ztest_opts.zo_verbose >= 6) 5300 (void) printf("resuming from suspended state\n"); 5301 spa_vdev_state_enter(spa, SCL_NONE); 5302 vdev_clear(spa, NULL); 5303 (void) spa_vdev_state_exit(spa, NULL, 0); 5304 (void) zio_resume(spa); 5305 } 5306 5307 static void * 5308 ztest_resume_thread(void *arg) 5309 { 5310 spa_t *spa = arg; 5311 5312 while (!ztest_exiting) { 5313 if (spa_suspended(spa)) 5314 ztest_resume(spa); 5315 (void) poll(NULL, 0, 100); 5316 } 5317 return (NULL); 5318 } 5319 5320 static void * 5321 ztest_deadman_thread(void *arg) 5322 { 5323 ztest_shared_t *zs = arg; 5324 spa_t *spa = ztest_spa; 5325 hrtime_t delta, total = 0; 5326 5327 for (;;) { 5328 delta = zs->zs_thread_stop - zs->zs_thread_start + 5329 MSEC2NSEC(zfs_deadman_synctime_ms); 5330 5331 (void) poll(NULL, 0, (int)NSEC2MSEC(delta)); 5332 5333 /* 5334 * If the pool is suspended then fail immediately. Otherwise, 5335 * check to see if the pool is making any progress. If 5336 * vdev_deadman() discovers that there hasn't been any recent 5337 * I/Os then it will end up aborting the tests. 5338 */ 5339 if (spa_suspended(spa) || spa->spa_root_vdev == NULL) { 5340 fatal(0, "aborting test after %llu seconds because " 5341 "pool has transitioned to a suspended state.", 5342 zfs_deadman_synctime_ms / 1000); 5343 return (NULL); 5344 } 5345 vdev_deadman(spa->spa_root_vdev); 5346 5347 total += zfs_deadman_synctime_ms/1000; 5348 (void) printf("ztest has been running for %lld seconds\n", 5349 total); 5350 } 5351 } 5352 5353 static void 5354 ztest_execute(int test, ztest_info_t *zi, uint64_t id) 5355 { 5356 ztest_ds_t *zd = &ztest_ds[id % ztest_opts.zo_datasets]; 5357 ztest_shared_callstate_t *zc = ZTEST_GET_SHARED_CALLSTATE(test); 5358 hrtime_t functime = gethrtime(); 5359 5360 for (int i = 0; i < zi->zi_iters; i++) 5361 zi->zi_func(zd, id); 5362 5363 functime = gethrtime() - functime; 5364 5365 atomic_add_64(&zc->zc_count, 1); 5366 atomic_add_64(&zc->zc_time, functime); 5367 5368 if (ztest_opts.zo_verbose >= 4) { 5369 Dl_info dli; 5370 (void) dladdr((void *)zi->zi_func, &dli); 5371 (void) printf("%6.2f sec in %s\n", 5372 (double)functime / NANOSEC, dli.dli_sname); 5373 } 5374 } 5375 5376 static void * 5377 ztest_thread(void *arg) 5378 { 5379 int rand; 5380 uint64_t id = (uintptr_t)arg; 5381 ztest_shared_t *zs = ztest_shared; 5382 uint64_t call_next; 5383 hrtime_t now; 5384 ztest_info_t *zi; 5385 ztest_shared_callstate_t *zc; 5386 5387 while ((now = gethrtime()) < zs->zs_thread_stop) { 5388 /* 5389 * See if it's time to force a crash. 5390 */ 5391 if (now > zs->zs_thread_kill) 5392 ztest_kill(zs); 5393 5394 /* 5395 * If we're getting ENOSPC with some regularity, stop. 5396 */ 5397 if (zs->zs_enospc_count > 10) 5398 break; 5399 5400 /* 5401 * Pick a random function to execute. 5402 */ 5403 rand = ztest_random(ZTEST_FUNCS); 5404 zi = &ztest_info[rand]; 5405 zc = ZTEST_GET_SHARED_CALLSTATE(rand); 5406 call_next = zc->zc_next; 5407 5408 if (now >= call_next && 5409 atomic_cas_64(&zc->zc_next, call_next, call_next + 5410 ztest_random(2 * zi->zi_interval[0] + 1)) == call_next) { 5411 ztest_execute(rand, zi, id); 5412 } 5413 } 5414 5415 return (NULL); 5416 } 5417 5418 static void 5419 ztest_dataset_name(char *dsname, char *pool, int d) 5420 { 5421 (void) snprintf(dsname, MAXNAMELEN, "%s/ds_%d", pool, d); 5422 } 5423 5424 static void 5425 ztest_dataset_destroy(int d) 5426 { 5427 char name[MAXNAMELEN]; 5428 5429 ztest_dataset_name(name, ztest_opts.zo_pool, d); 5430 5431 if (ztest_opts.zo_verbose >= 3) 5432 (void) printf("Destroying %s to free up space\n", name); 5433 5434 /* 5435 * Cleanup any non-standard clones and snapshots. In general, 5436 * ztest thread t operates on dataset (t % zopt_datasets), 5437 * so there may be more than one thing to clean up. 5438 */ 5439 for (int t = d; t < ztest_opts.zo_threads; 5440 t += ztest_opts.zo_datasets) { 5441 ztest_dsl_dataset_cleanup(name, t); 5442 } 5443 5444 (void) dmu_objset_find(name, ztest_objset_destroy_cb, NULL, 5445 DS_FIND_SNAPSHOTS | DS_FIND_CHILDREN); 5446 } 5447 5448 static void 5449 ztest_dataset_dirobj_verify(ztest_ds_t *zd) 5450 { 5451 uint64_t usedobjs, dirobjs, scratch; 5452 5453 /* 5454 * ZTEST_DIROBJ is the object directory for the entire dataset. 5455 * Therefore, the number of objects in use should equal the 5456 * number of ZTEST_DIROBJ entries, +1 for ZTEST_DIROBJ itself. 5457 * If not, we have an object leak. 5458 * 5459 * Note that we can only check this in ztest_dataset_open(), 5460 * when the open-context and syncing-context values agree. 5461 * That's because zap_count() returns the open-context value, 5462 * while dmu_objset_space() returns the rootbp fill count. 5463 */ 5464 VERIFY3U(0, ==, zap_count(zd->zd_os, ZTEST_DIROBJ, &dirobjs)); 5465 dmu_objset_space(zd->zd_os, &scratch, &scratch, &usedobjs, &scratch); 5466 ASSERT3U(dirobjs + 1, ==, usedobjs); 5467 } 5468 5469 static int 5470 ztest_dataset_open(int d) 5471 { 5472 ztest_ds_t *zd = &ztest_ds[d]; 5473 uint64_t committed_seq = ZTEST_GET_SHARED_DS(d)->zd_seq; 5474 objset_t *os; 5475 zilog_t *zilog; 5476 char name[MAXNAMELEN]; 5477 int error; 5478 5479 ztest_dataset_name(name, ztest_opts.zo_pool, d); 5480 5481 (void) rw_rdlock(&ztest_name_lock); 5482 5483 error = ztest_dataset_create(name); 5484 if (error == ENOSPC) { 5485 (void) rw_unlock(&ztest_name_lock); 5486 ztest_record_enospc(FTAG); 5487 return (error); 5488 } 5489 ASSERT(error == 0 || error == EEXIST); 5490 5491 VERIFY0(dmu_objset_own(name, DMU_OST_OTHER, B_FALSE, zd, &os)); 5492 (void) rw_unlock(&ztest_name_lock); 5493 5494 ztest_zd_init(zd, ZTEST_GET_SHARED_DS(d), os); 5495 5496 zilog = zd->zd_zilog; 5497 5498 if (zilog->zl_header->zh_claim_lr_seq != 0 && 5499 zilog->zl_header->zh_claim_lr_seq < committed_seq) 5500 fatal(0, "missing log records: claimed %llu < committed %llu", 5501 zilog->zl_header->zh_claim_lr_seq, committed_seq); 5502 5503 ztest_dataset_dirobj_verify(zd); 5504 5505 zil_replay(os, zd, ztest_replay_vector); 5506 5507 ztest_dataset_dirobj_verify(zd); 5508 5509 if (ztest_opts.zo_verbose >= 6) 5510 (void) printf("%s replay %llu blocks, %llu records, seq %llu\n", 5511 zd->zd_name, 5512 (u_longlong_t)zilog->zl_parse_blk_count, 5513 (u_longlong_t)zilog->zl_parse_lr_count, 5514 (u_longlong_t)zilog->zl_replaying_seq); 5515 5516 zilog = zil_open(os, ztest_get_data); 5517 5518 if (zilog->zl_replaying_seq != 0 && 5519 zilog->zl_replaying_seq < committed_seq) 5520 fatal(0, "missing log records: replayed %llu < committed %llu", 5521 zilog->zl_replaying_seq, committed_seq); 5522 5523 return (0); 5524 } 5525 5526 static void 5527 ztest_dataset_close(int d) 5528 { 5529 ztest_ds_t *zd = &ztest_ds[d]; 5530 5531 zil_close(zd->zd_zilog); 5532 dmu_objset_disown(zd->zd_os, zd); 5533 5534 ztest_zd_fini(zd); 5535 } 5536 5537 /* 5538 * Kick off threads to run tests on all datasets in parallel. 5539 */ 5540 static void 5541 ztest_run(ztest_shared_t *zs) 5542 { 5543 thread_t *tid; 5544 spa_t *spa; 5545 objset_t *os; 5546 thread_t resume_tid; 5547 int error; 5548 5549 ztest_exiting = B_FALSE; 5550 5551 /* 5552 * Initialize parent/child shared state. 5553 */ 5554 VERIFY(_mutex_init(&ztest_vdev_lock, USYNC_THREAD, NULL) == 0); 5555 VERIFY(rwlock_init(&ztest_name_lock, USYNC_THREAD, NULL) == 0); 5556 5557 zs->zs_thread_start = gethrtime(); 5558 zs->zs_thread_stop = 5559 zs->zs_thread_start + ztest_opts.zo_passtime * NANOSEC; 5560 zs->zs_thread_stop = MIN(zs->zs_thread_stop, zs->zs_proc_stop); 5561 zs->zs_thread_kill = zs->zs_thread_stop; 5562 if (ztest_random(100) < ztest_opts.zo_killrate) { 5563 zs->zs_thread_kill -= 5564 ztest_random(ztest_opts.zo_passtime * NANOSEC); 5565 } 5566 5567 (void) _mutex_init(&zcl.zcl_callbacks_lock, USYNC_THREAD, NULL); 5568 5569 list_create(&zcl.zcl_callbacks, sizeof (ztest_cb_data_t), 5570 offsetof(ztest_cb_data_t, zcd_node)); 5571 5572 /* 5573 * Open our pool. 5574 */ 5575 kernel_init(FREAD | FWRITE); 5576 VERIFY0(spa_open(ztest_opts.zo_pool, &spa, FTAG)); 5577 spa->spa_debug = B_TRUE; 5578 ztest_spa = spa; 5579 5580 VERIFY0(dmu_objset_own(ztest_opts.zo_pool, 5581 DMU_OST_ANY, B_TRUE, FTAG, &os)); 5582 zs->zs_guid = dmu_objset_fsid_guid(os); 5583 dmu_objset_disown(os, FTAG); 5584 5585 spa->spa_dedup_ditto = 2 * ZIO_DEDUPDITTO_MIN; 5586 5587 /* 5588 * We don't expect the pool to suspend unless maxfaults == 0, 5589 * in which case ztest_fault_inject() temporarily takes away 5590 * the only valid replica. 5591 */ 5592 if (MAXFAULTS() == 0) 5593 spa->spa_failmode = ZIO_FAILURE_MODE_WAIT; 5594 else 5595 spa->spa_failmode = ZIO_FAILURE_MODE_PANIC; 5596 5597 /* 5598 * Create a thread to periodically resume suspended I/O. 5599 */ 5600 VERIFY(thr_create(0, 0, ztest_resume_thread, spa, THR_BOUND, 5601 &resume_tid) == 0); 5602 5603 /* 5604 * Create a deadman thread to abort() if we hang. 5605 */ 5606 VERIFY(thr_create(0, 0, ztest_deadman_thread, zs, THR_BOUND, 5607 NULL) == 0); 5608 5609 /* 5610 * Verify that we can safely inquire about about any object, 5611 * whether it's allocated or not. To make it interesting, 5612 * we probe a 5-wide window around each power of two. 5613 * This hits all edge cases, including zero and the max. 5614 */ 5615 for (int t = 0; t < 64; t++) { 5616 for (int d = -5; d <= 5; d++) { 5617 error = dmu_object_info(spa->spa_meta_objset, 5618 (1ULL << t) + d, NULL); 5619 ASSERT(error == 0 || error == ENOENT || 5620 error == EINVAL); 5621 } 5622 } 5623 5624 /* 5625 * If we got any ENOSPC errors on the previous run, destroy something. 5626 */ 5627 if (zs->zs_enospc_count != 0) { 5628 int d = ztest_random(ztest_opts.zo_datasets); 5629 ztest_dataset_destroy(d); 5630 } 5631 zs->zs_enospc_count = 0; 5632 5633 tid = umem_zalloc(ztest_opts.zo_threads * sizeof (thread_t), 5634 UMEM_NOFAIL); 5635 5636 if (ztest_opts.zo_verbose >= 4) 5637 (void) printf("starting main threads...\n"); 5638 5639 /* 5640 * Kick off all the tests that run in parallel. 5641 */ 5642 for (int t = 0; t < ztest_opts.zo_threads; t++) { 5643 if (t < ztest_opts.zo_datasets && 5644 ztest_dataset_open(t) != 0) 5645 return; 5646 VERIFY(thr_create(0, 0, ztest_thread, (void *)(uintptr_t)t, 5647 THR_BOUND, &tid[t]) == 0); 5648 } 5649 5650 /* 5651 * Wait for all of the tests to complete. We go in reverse order 5652 * so we don't close datasets while threads are still using them. 5653 */ 5654 for (int t = ztest_opts.zo_threads - 1; t >= 0; t--) { 5655 VERIFY(thr_join(tid[t], NULL, NULL) == 0); 5656 if (t < ztest_opts.zo_datasets) 5657 ztest_dataset_close(t); 5658 } 5659 5660 txg_wait_synced(spa_get_dsl(spa), 0); 5661 5662 zs->zs_alloc = metaslab_class_get_alloc(spa_normal_class(spa)); 5663 zs->zs_space = metaslab_class_get_space(spa_normal_class(spa)); 5664 zfs_dbgmsg_print(FTAG); 5665 5666 umem_free(tid, ztest_opts.zo_threads * sizeof (thread_t)); 5667 5668 /* Kill the resume thread */ 5669 ztest_exiting = B_TRUE; 5670 VERIFY(thr_join(resume_tid, NULL, NULL) == 0); 5671 ztest_resume(spa); 5672 5673 /* 5674 * Right before closing the pool, kick off a bunch of async I/O; 5675 * spa_close() should wait for it to complete. 5676 */ 5677 for (uint64_t object = 1; object < 50; object++) 5678 dmu_prefetch(spa->spa_meta_objset, object, 0, 1ULL << 20); 5679 5680 spa_close(spa, FTAG); 5681 5682 /* 5683 * Verify that we can loop over all pools. 5684 */ 5685 mutex_enter(&spa_namespace_lock); 5686 for (spa = spa_next(NULL); spa != NULL; spa = spa_next(spa)) 5687 if (ztest_opts.zo_verbose > 3) 5688 (void) printf("spa_next: found %s\n", spa_name(spa)); 5689 mutex_exit(&spa_namespace_lock); 5690 5691 /* 5692 * Verify that we can export the pool and reimport it under a 5693 * different name. 5694 */ 5695 if (ztest_random(2) == 0) { 5696 char name[MAXNAMELEN]; 5697 (void) snprintf(name, MAXNAMELEN, "%s_import", 5698 ztest_opts.zo_pool); 5699 ztest_spa_import_export(ztest_opts.zo_pool, name); 5700 ztest_spa_import_export(name, ztest_opts.zo_pool); 5701 } 5702 5703 kernel_fini(); 5704 5705 list_destroy(&zcl.zcl_callbacks); 5706 5707 (void) _mutex_destroy(&zcl.zcl_callbacks_lock); 5708 5709 (void) rwlock_destroy(&ztest_name_lock); 5710 (void) _mutex_destroy(&ztest_vdev_lock); 5711 } 5712 5713 static void 5714 ztest_freeze(void) 5715 { 5716 ztest_ds_t *zd = &ztest_ds[0]; 5717 spa_t *spa; 5718 int numloops = 0; 5719 5720 if (ztest_opts.zo_verbose >= 3) 5721 (void) printf("testing spa_freeze()...\n"); 5722 5723 kernel_init(FREAD | FWRITE); 5724 VERIFY3U(0, ==, spa_open(ztest_opts.zo_pool, &spa, FTAG)); 5725 VERIFY3U(0, ==, ztest_dataset_open(0)); 5726 spa->spa_debug = B_TRUE; 5727 ztest_spa = spa; 5728 5729 /* 5730 * Force the first log block to be transactionally allocated. 5731 * We have to do this before we freeze the pool -- otherwise 5732 * the log chain won't be anchored. 5733 */ 5734 while (BP_IS_HOLE(&zd->zd_zilog->zl_header->zh_log)) { 5735 ztest_dmu_object_alloc_free(zd, 0); 5736 zil_commit(zd->zd_zilog, 0); 5737 } 5738 5739 txg_wait_synced(spa_get_dsl(spa), 0); 5740 5741 /* 5742 * Freeze the pool. This stops spa_sync() from doing anything, 5743 * so that the only way to record changes from now on is the ZIL. 5744 */ 5745 spa_freeze(spa); 5746 5747 /* 5748 * Run tests that generate log records but don't alter the pool config 5749 * or depend on DSL sync tasks (snapshots, objset create/destroy, etc). 5750 * We do a txg_wait_synced() after each iteration to force the txg 5751 * to increase well beyond the last synced value in the uberblock. 5752 * The ZIL should be OK with that. 5753 */ 5754 while (ztest_random(10) != 0 && 5755 numloops++ < ztest_opts.zo_maxloops) { 5756 ztest_dmu_write_parallel(zd, 0); 5757 ztest_dmu_object_alloc_free(zd, 0); 5758 txg_wait_synced(spa_get_dsl(spa), 0); 5759 } 5760 5761 /* 5762 * Commit all of the changes we just generated. 5763 */ 5764 zil_commit(zd->zd_zilog, 0); 5765 txg_wait_synced(spa_get_dsl(spa), 0); 5766 5767 /* 5768 * Close our dataset and close the pool. 5769 */ 5770 ztest_dataset_close(0); 5771 spa_close(spa, FTAG); 5772 kernel_fini(); 5773 5774 /* 5775 * Open and close the pool and dataset to induce log replay. 5776 */ 5777 kernel_init(FREAD | FWRITE); 5778 VERIFY3U(0, ==, spa_open(ztest_opts.zo_pool, &spa, FTAG)); 5779 ASSERT(spa_freeze_txg(spa) == UINT64_MAX); 5780 VERIFY3U(0, ==, ztest_dataset_open(0)); 5781 ztest_dataset_close(0); 5782 5783 spa->spa_debug = B_TRUE; 5784 ztest_spa = spa; 5785 txg_wait_synced(spa_get_dsl(spa), 0); 5786 ztest_reguid(NULL, 0); 5787 5788 spa_close(spa, FTAG); 5789 kernel_fini(); 5790 } 5791 5792 void 5793 print_time(hrtime_t t, char *timebuf) 5794 { 5795 hrtime_t s = t / NANOSEC; 5796 hrtime_t m = s / 60; 5797 hrtime_t h = m / 60; 5798 hrtime_t d = h / 24; 5799 5800 s -= m * 60; 5801 m -= h * 60; 5802 h -= d * 24; 5803 5804 timebuf[0] = '\0'; 5805 5806 if (d) 5807 (void) sprintf(timebuf, 5808 "%llud%02lluh%02llum%02llus", d, h, m, s); 5809 else if (h) 5810 (void) sprintf(timebuf, "%lluh%02llum%02llus", h, m, s); 5811 else if (m) 5812 (void) sprintf(timebuf, "%llum%02llus", m, s); 5813 else 5814 (void) sprintf(timebuf, "%llus", s); 5815 } 5816 5817 static nvlist_t * 5818 make_random_props() 5819 { 5820 nvlist_t *props; 5821 5822 VERIFY(nvlist_alloc(&props, NV_UNIQUE_NAME, 0) == 0); 5823 if (ztest_random(2) == 0) 5824 return (props); 5825 VERIFY(nvlist_add_uint64(props, "autoreplace", 1) == 0); 5826 5827 return (props); 5828 } 5829 5830 /* 5831 * Create a storage pool with the given name and initial vdev size. 5832 * Then test spa_freeze() functionality. 5833 */ 5834 static void 5835 ztest_init(ztest_shared_t *zs) 5836 { 5837 spa_t *spa; 5838 nvlist_t *nvroot, *props; 5839 5840 VERIFY(_mutex_init(&ztest_vdev_lock, USYNC_THREAD, NULL) == 0); 5841 VERIFY(rwlock_init(&ztest_name_lock, USYNC_THREAD, NULL) == 0); 5842 5843 kernel_init(FREAD | FWRITE); 5844 5845 /* 5846 * Create the storage pool. 5847 */ 5848 (void) spa_destroy(ztest_opts.zo_pool); 5849 ztest_shared->zs_vdev_next_leaf = 0; 5850 zs->zs_splits = 0; 5851 zs->zs_mirrors = ztest_opts.zo_mirrors; 5852 nvroot = make_vdev_root(NULL, NULL, NULL, ztest_opts.zo_vdev_size, 0, 5853 0, ztest_opts.zo_raidz, zs->zs_mirrors, 1); 5854 props = make_random_props(); 5855 for (int i = 0; i < SPA_FEATURES; i++) { 5856 char buf[1024]; 5857 (void) snprintf(buf, sizeof (buf), "feature@%s", 5858 spa_feature_table[i].fi_uname); 5859 VERIFY3U(0, ==, nvlist_add_uint64(props, buf, 0)); 5860 } 5861 VERIFY3U(0, ==, spa_create(ztest_opts.zo_pool, nvroot, props, NULL)); 5862 nvlist_free(nvroot); 5863 5864 VERIFY3U(0, ==, spa_open(ztest_opts.zo_pool, &spa, FTAG)); 5865 zs->zs_metaslab_sz = 5866 1ULL << spa->spa_root_vdev->vdev_child[0]->vdev_ms_shift; 5867 5868 spa_close(spa, FTAG); 5869 5870 kernel_fini(); 5871 5872 ztest_run_zdb(ztest_opts.zo_pool); 5873 5874 ztest_freeze(); 5875 5876 ztest_run_zdb(ztest_opts.zo_pool); 5877 5878 (void) rwlock_destroy(&ztest_name_lock); 5879 (void) _mutex_destroy(&ztest_vdev_lock); 5880 } 5881 5882 static void 5883 setup_data_fd(void) 5884 { 5885 static char ztest_name_data[] = "/tmp/ztest.data.XXXXXX"; 5886 5887 ztest_fd_data = mkstemp(ztest_name_data); 5888 ASSERT3S(ztest_fd_data, >=, 0); 5889 (void) unlink(ztest_name_data); 5890 } 5891 5892 5893 static int 5894 shared_data_size(ztest_shared_hdr_t *hdr) 5895 { 5896 int size; 5897 5898 size = hdr->zh_hdr_size; 5899 size += hdr->zh_opts_size; 5900 size += hdr->zh_size; 5901 size += hdr->zh_stats_size * hdr->zh_stats_count; 5902 size += hdr->zh_ds_size * hdr->zh_ds_count; 5903 5904 return (size); 5905 } 5906 5907 static void 5908 setup_hdr(void) 5909 { 5910 int size; 5911 ztest_shared_hdr_t *hdr; 5912 5913 hdr = (void *)mmap(0, P2ROUNDUP(sizeof (*hdr), getpagesize()), 5914 PROT_READ | PROT_WRITE, MAP_SHARED, ztest_fd_data, 0); 5915 ASSERT(hdr != MAP_FAILED); 5916 5917 VERIFY3U(0, ==, ftruncate(ztest_fd_data, sizeof (ztest_shared_hdr_t))); 5918 5919 hdr->zh_hdr_size = sizeof (ztest_shared_hdr_t); 5920 hdr->zh_opts_size = sizeof (ztest_shared_opts_t); 5921 hdr->zh_size = sizeof (ztest_shared_t); 5922 hdr->zh_stats_size = sizeof (ztest_shared_callstate_t); 5923 hdr->zh_stats_count = ZTEST_FUNCS; 5924 hdr->zh_ds_size = sizeof (ztest_shared_ds_t); 5925 hdr->zh_ds_count = ztest_opts.zo_datasets; 5926 5927 size = shared_data_size(hdr); 5928 VERIFY3U(0, ==, ftruncate(ztest_fd_data, size)); 5929 5930 (void) munmap((caddr_t)hdr, P2ROUNDUP(sizeof (*hdr), getpagesize())); 5931 } 5932 5933 static void 5934 setup_data(void) 5935 { 5936 int size, offset; 5937 ztest_shared_hdr_t *hdr; 5938 uint8_t *buf; 5939 5940 hdr = (void *)mmap(0, P2ROUNDUP(sizeof (*hdr), getpagesize()), 5941 PROT_READ, MAP_SHARED, ztest_fd_data, 0); 5942 ASSERT(hdr != MAP_FAILED); 5943 5944 size = shared_data_size(hdr); 5945 5946 (void) munmap((caddr_t)hdr, P2ROUNDUP(sizeof (*hdr), getpagesize())); 5947 hdr = ztest_shared_hdr = (void *)mmap(0, P2ROUNDUP(size, getpagesize()), 5948 PROT_READ | PROT_WRITE, MAP_SHARED, ztest_fd_data, 0); 5949 ASSERT(hdr != MAP_FAILED); 5950 buf = (uint8_t *)hdr; 5951 5952 offset = hdr->zh_hdr_size; 5953 ztest_shared_opts = (void *)&buf[offset]; 5954 offset += hdr->zh_opts_size; 5955 ztest_shared = (void *)&buf[offset]; 5956 offset += hdr->zh_size; 5957 ztest_shared_callstate = (void *)&buf[offset]; 5958 offset += hdr->zh_stats_size * hdr->zh_stats_count; 5959 ztest_shared_ds = (void *)&buf[offset]; 5960 } 5961 5962 static boolean_t 5963 exec_child(char *cmd, char *libpath, boolean_t ignorekill, int *statusp) 5964 { 5965 pid_t pid; 5966 int status; 5967 char *cmdbuf = NULL; 5968 5969 pid = fork(); 5970 5971 if (cmd == NULL) { 5972 cmdbuf = umem_alloc(MAXPATHLEN, UMEM_NOFAIL); 5973 (void) strlcpy(cmdbuf, getexecname(), MAXPATHLEN); 5974 cmd = cmdbuf; 5975 } 5976 5977 if (pid == -1) 5978 fatal(1, "fork failed"); 5979 5980 if (pid == 0) { /* child */ 5981 char *emptyargv[2] = { cmd, NULL }; 5982 char fd_data_str[12]; 5983 5984 struct rlimit rl = { 1024, 1024 }; 5985 (void) setrlimit(RLIMIT_NOFILE, &rl); 5986 5987 (void) close(ztest_fd_rand); 5988 VERIFY3U(11, >=, 5989 snprintf(fd_data_str, 12, "%d", ztest_fd_data)); 5990 VERIFY0(setenv("ZTEST_FD_DATA", fd_data_str, 1)); 5991 5992 (void) enable_extended_FILE_stdio(-1, -1); 5993 if (libpath != NULL) 5994 VERIFY(0 == setenv("LD_LIBRARY_PATH", libpath, 1)); 5995 (void) execv(cmd, emptyargv); 5996 ztest_dump_core = B_FALSE; 5997 fatal(B_TRUE, "exec failed: %s", cmd); 5998 } 5999 6000 if (cmdbuf != NULL) { 6001 umem_free(cmdbuf, MAXPATHLEN); 6002 cmd = NULL; 6003 } 6004 6005 while (waitpid(pid, &status, 0) != pid) 6006 continue; 6007 if (statusp != NULL) 6008 *statusp = status; 6009 6010 if (WIFEXITED(status)) { 6011 if (WEXITSTATUS(status) != 0) { 6012 (void) fprintf(stderr, "child exited with code %d\n", 6013 WEXITSTATUS(status)); 6014 exit(2); 6015 } 6016 return (B_FALSE); 6017 } else if (WIFSIGNALED(status)) { 6018 if (!ignorekill || WTERMSIG(status) != SIGKILL) { 6019 (void) fprintf(stderr, "child died with signal %d\n", 6020 WTERMSIG(status)); 6021 exit(3); 6022 } 6023 return (B_TRUE); 6024 } else { 6025 (void) fprintf(stderr, "something strange happened to child\n"); 6026 exit(4); 6027 /* NOTREACHED */ 6028 } 6029 } 6030 6031 static void 6032 ztest_run_init(void) 6033 { 6034 ztest_shared_t *zs = ztest_shared; 6035 6036 ASSERT(ztest_opts.zo_init != 0); 6037 6038 /* 6039 * Blow away any existing copy of zpool.cache 6040 */ 6041 (void) remove(spa_config_path); 6042 6043 /* 6044 * Create and initialize our storage pool. 6045 */ 6046 for (int i = 1; i <= ztest_opts.zo_init; i++) { 6047 bzero(zs, sizeof (ztest_shared_t)); 6048 if (ztest_opts.zo_verbose >= 3 && 6049 ztest_opts.zo_init != 1) { 6050 (void) printf("ztest_init(), pass %d\n", i); 6051 } 6052 ztest_init(zs); 6053 } 6054 } 6055 6056 int 6057 main(int argc, char **argv) 6058 { 6059 int kills = 0; 6060 int iters = 0; 6061 int older = 0; 6062 int newer = 0; 6063 ztest_shared_t *zs; 6064 ztest_info_t *zi; 6065 ztest_shared_callstate_t *zc; 6066 char timebuf[100]; 6067 char numbuf[6]; 6068 spa_t *spa; 6069 char *cmd; 6070 boolean_t hasalt; 6071 char *fd_data_str = getenv("ZTEST_FD_DATA"); 6072 6073 (void) setvbuf(stdout, NULL, _IOLBF, 0); 6074 6075 dprintf_setup(&argc, argv); 6076 zfs_deadman_synctime_ms = 300000; 6077 6078 ztest_fd_rand = open("/dev/urandom", O_RDONLY); 6079 ASSERT3S(ztest_fd_rand, >=, 0); 6080 6081 if (!fd_data_str) { 6082 process_options(argc, argv); 6083 6084 setup_data_fd(); 6085 setup_hdr(); 6086 setup_data(); 6087 bcopy(&ztest_opts, ztest_shared_opts, 6088 sizeof (*ztest_shared_opts)); 6089 } else { 6090 ztest_fd_data = atoi(fd_data_str); 6091 setup_data(); 6092 bcopy(ztest_shared_opts, &ztest_opts, sizeof (ztest_opts)); 6093 } 6094 ASSERT3U(ztest_opts.zo_datasets, ==, ztest_shared_hdr->zh_ds_count); 6095 6096 /* Override location of zpool.cache */ 6097 VERIFY3U(asprintf((char **)&spa_config_path, "%s/zpool.cache", 6098 ztest_opts.zo_dir), !=, -1); 6099 6100 ztest_ds = umem_alloc(ztest_opts.zo_datasets * sizeof (ztest_ds_t), 6101 UMEM_NOFAIL); 6102 zs = ztest_shared; 6103 6104 if (fd_data_str) { 6105 metaslab_gang_bang = ztest_opts.zo_metaslab_gang_bang; 6106 metaslab_df_alloc_threshold = 6107 zs->zs_metaslab_df_alloc_threshold; 6108 6109 if (zs->zs_do_init) 6110 ztest_run_init(); 6111 else 6112 ztest_run(zs); 6113 exit(0); 6114 } 6115 6116 hasalt = (strlen(ztest_opts.zo_alt_ztest) != 0); 6117 6118 if (ztest_opts.zo_verbose >= 1) { 6119 (void) printf("%llu vdevs, %d datasets, %d threads," 6120 " %llu seconds...\n", 6121 (u_longlong_t)ztest_opts.zo_vdevs, 6122 ztest_opts.zo_datasets, 6123 ztest_opts.zo_threads, 6124 (u_longlong_t)ztest_opts.zo_time); 6125 } 6126 6127 cmd = umem_alloc(MAXNAMELEN, UMEM_NOFAIL); 6128 (void) strlcpy(cmd, getexecname(), MAXNAMELEN); 6129 6130 zs->zs_do_init = B_TRUE; 6131 if (strlen(ztest_opts.zo_alt_ztest) != 0) { 6132 if (ztest_opts.zo_verbose >= 1) { 6133 (void) printf("Executing older ztest for " 6134 "initialization: %s\n", ztest_opts.zo_alt_ztest); 6135 } 6136 VERIFY(!exec_child(ztest_opts.zo_alt_ztest, 6137 ztest_opts.zo_alt_libpath, B_FALSE, NULL)); 6138 } else { 6139 VERIFY(!exec_child(NULL, NULL, B_FALSE, NULL)); 6140 } 6141 zs->zs_do_init = B_FALSE; 6142 6143 zs->zs_proc_start = gethrtime(); 6144 zs->zs_proc_stop = zs->zs_proc_start + ztest_opts.zo_time * NANOSEC; 6145 6146 for (int f = 0; f < ZTEST_FUNCS; f++) { 6147 zi = &ztest_info[f]; 6148 zc = ZTEST_GET_SHARED_CALLSTATE(f); 6149 if (zs->zs_proc_start + zi->zi_interval[0] > zs->zs_proc_stop) 6150 zc->zc_next = UINT64_MAX; 6151 else 6152 zc->zc_next = zs->zs_proc_start + 6153 ztest_random(2 * zi->zi_interval[0] + 1); 6154 } 6155 6156 /* 6157 * Run the tests in a loop. These tests include fault injection 6158 * to verify that self-healing data works, and forced crashes 6159 * to verify that we never lose on-disk consistency. 6160 */ 6161 while (gethrtime() < zs->zs_proc_stop) { 6162 int status; 6163 boolean_t killed; 6164 6165 /* 6166 * Initialize the workload counters for each function. 6167 */ 6168 for (int f = 0; f < ZTEST_FUNCS; f++) { 6169 zc = ZTEST_GET_SHARED_CALLSTATE(f); 6170 zc->zc_count = 0; 6171 zc->zc_time = 0; 6172 } 6173 6174 /* Set the allocation switch size */ 6175 zs->zs_metaslab_df_alloc_threshold = 6176 ztest_random(zs->zs_metaslab_sz / 4) + 1; 6177 6178 if (!hasalt || ztest_random(2) == 0) { 6179 if (hasalt && ztest_opts.zo_verbose >= 1) { 6180 (void) printf("Executing newer ztest: %s\n", 6181 cmd); 6182 } 6183 newer++; 6184 killed = exec_child(cmd, NULL, B_TRUE, &status); 6185 } else { 6186 if (hasalt && ztest_opts.zo_verbose >= 1) { 6187 (void) printf("Executing older ztest: %s\n", 6188 ztest_opts.zo_alt_ztest); 6189 } 6190 older++; 6191 killed = exec_child(ztest_opts.zo_alt_ztest, 6192 ztest_opts.zo_alt_libpath, B_TRUE, &status); 6193 } 6194 6195 if (killed) 6196 kills++; 6197 iters++; 6198 6199 if (ztest_opts.zo_verbose >= 1) { 6200 hrtime_t now = gethrtime(); 6201 6202 now = MIN(now, zs->zs_proc_stop); 6203 print_time(zs->zs_proc_stop - now, timebuf); 6204 nicenum(zs->zs_space, numbuf); 6205 6206 (void) printf("Pass %3d, %8s, %3llu ENOSPC, " 6207 "%4.1f%% of %5s used, %3.0f%% done, %8s to go\n", 6208 iters, 6209 WIFEXITED(status) ? "Complete" : "SIGKILL", 6210 (u_longlong_t)zs->zs_enospc_count, 6211 100.0 * zs->zs_alloc / zs->zs_space, 6212 numbuf, 6213 100.0 * (now - zs->zs_proc_start) / 6214 (ztest_opts.zo_time * NANOSEC), timebuf); 6215 } 6216 6217 if (ztest_opts.zo_verbose >= 2) { 6218 (void) printf("\nWorkload summary:\n\n"); 6219 (void) printf("%7s %9s %s\n", 6220 "Calls", "Time", "Function"); 6221 (void) printf("%7s %9s %s\n", 6222 "-----", "----", "--------"); 6223 for (int f = 0; f < ZTEST_FUNCS; f++) { 6224 Dl_info dli; 6225 6226 zi = &ztest_info[f]; 6227 zc = ZTEST_GET_SHARED_CALLSTATE(f); 6228 print_time(zc->zc_time, timebuf); 6229 (void) dladdr((void *)zi->zi_func, &dli); 6230 (void) printf("%7llu %9s %s\n", 6231 (u_longlong_t)zc->zc_count, timebuf, 6232 dli.dli_sname); 6233 } 6234 (void) printf("\n"); 6235 } 6236 6237 /* 6238 * It's possible that we killed a child during a rename test, 6239 * in which case we'll have a 'ztest_tmp' pool lying around 6240 * instead of 'ztest'. Do a blind rename in case this happened. 6241 */ 6242 kernel_init(FREAD); 6243 if (spa_open(ztest_opts.zo_pool, &spa, FTAG) == 0) { 6244 spa_close(spa, FTAG); 6245 } else { 6246 char tmpname[MAXNAMELEN]; 6247 kernel_fini(); 6248 kernel_init(FREAD | FWRITE); 6249 (void) snprintf(tmpname, sizeof (tmpname), "%s_tmp", 6250 ztest_opts.zo_pool); 6251 (void) spa_rename(tmpname, ztest_opts.zo_pool); 6252 } 6253 kernel_fini(); 6254 6255 ztest_run_zdb(ztest_opts.zo_pool); 6256 } 6257 6258 if (ztest_opts.zo_verbose >= 1) { 6259 if (hasalt) { 6260 (void) printf("%d runs of older ztest: %s\n", older, 6261 ztest_opts.zo_alt_ztest); 6262 (void) printf("%d runs of newer ztest: %s\n", newer, 6263 cmd); 6264 } 6265 (void) printf("%d killed, %d completed, %.0f%% kill rate\n", 6266 kills, iters - kills, (100.0 * kills) / MAX(1, iters)); 6267 } 6268 6269 umem_free(cmd, MAXNAMELEN); 6270 6271 return (0); 6272 } 6273