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) 2012 by Delphix. All rights reserved. 24 * Copyright 2011 Nexenta Systems, Inc. All rights reserved. 25 */ 26 27 /* 28 * The objective of this program is to provide a DMU/ZAP/SPA stress test 29 * that runs entirely in userland, is easy to use, and easy to extend. 30 * 31 * The overall design of the ztest program is as follows: 32 * 33 * (1) For each major functional area (e.g. adding vdevs to a pool, 34 * creating and destroying datasets, reading and writing objects, etc) 35 * we have a simple routine to test that functionality. These 36 * individual routines do not have to do anything "stressful". 37 * 38 * (2) We turn these simple functionality tests into a stress test by 39 * running them all in parallel, with as many threads as desired, 40 * and spread across as many datasets, objects, and vdevs as desired. 41 * 42 * (3) While all this is happening, we inject faults into the pool to 43 * verify that self-healing data really works. 44 * 45 * (4) Every time we open a dataset, we change its checksum and compression 46 * functions. Thus even individual objects vary from block to block 47 * in which checksum they use and whether they're compressed. 48 * 49 * (5) To verify that we never lose on-disk consistency after a crash, 50 * we run the entire test in a child of the main process. 51 * At random times, the child self-immolates with a SIGKILL. 52 * This is the software equivalent of pulling the power cord. 53 * The parent then runs the test again, using the existing 54 * storage pool, as many times as desired. If backwards compatability 55 * testing is enabled ztest will sometimes run the "older" version 56 * of ztest after a SIGKILL. 57 * 58 * (6) To verify that we don't have future leaks or temporal incursions, 59 * many of the functional tests record the transaction group number 60 * as part of their data. When reading old data, they verify that 61 * the transaction group number is less than the current, open txg. 62 * If you add a new test, please do this if applicable. 63 * 64 * When run with no arguments, ztest runs for about five minutes and 65 * produces no output if successful. To get a little bit of information, 66 * specify -V. To get more information, specify -VV, and so on. 67 * 68 * To turn this into an overnight stress test, use -T to specify run time. 69 * 70 * You can ask more more vdevs [-v], datasets [-d], or threads [-t] 71 * to increase the pool capacity, fanout, and overall stress level. 72 * 73 * Use the -k option to set the desired frequency of kills. 74 * 75 * When ztest invokes itself it passes all relevant information through a 76 * temporary file which is mmap-ed in the child process. This allows shared 77 * memory to survive the exec syscall. The ztest_shared_hdr_t struct is always 78 * stored at offset 0 of this file and contains information on the size and 79 * number of shared structures in the file. The information stored in this file 80 * must remain backwards compatible with older versions of ztest so that 81 * ztest can invoke them during backwards compatibility testing (-B). 82 */ 83 84 #include <sys/zfs_context.h> 85 #include <sys/spa.h> 86 #include <sys/dmu.h> 87 #include <sys/txg.h> 88 #include <sys/dbuf.h> 89 #include <sys/zap.h> 90 #include <sys/dmu_objset.h> 91 #include <sys/poll.h> 92 #include <sys/stat.h> 93 #include <sys/time.h> 94 #include <sys/wait.h> 95 #include <sys/mman.h> 96 #include <sys/resource.h> 97 #include <sys/zio.h> 98 #include <sys/zil.h> 99 #include <sys/zil_impl.h> 100 #include <sys/vdev_impl.h> 101 #include <sys/vdev_file.h> 102 #include <sys/spa_impl.h> 103 #include <sys/metaslab_impl.h> 104 #include <sys/dsl_prop.h> 105 #include <sys/dsl_dataset.h> 106 #include <sys/dsl_scan.h> 107 #include <sys/zio_checksum.h> 108 #include <sys/refcount.h> 109 #include <sys/zfeature.h> 110 #include <stdio.h> 111 #include <stdio_ext.h> 112 #include <stdlib.h> 113 #include <unistd.h> 114 #include <signal.h> 115 #include <umem.h> 116 #include <dlfcn.h> 117 #include <ctype.h> 118 #include <math.h> 119 #include <sys/fs/zfs.h> 120 #include <libnvpair.h> 121 122 #define ZTEST_FD_DATA 3 123 #define ZTEST_FD_RAND 4 124 125 typedef struct ztest_shared_hdr { 126 uint64_t zh_hdr_size; 127 uint64_t zh_opts_size; 128 uint64_t zh_size; 129 uint64_t zh_stats_size; 130 uint64_t zh_stats_count; 131 uint64_t zh_ds_size; 132 uint64_t zh_ds_count; 133 } ztest_shared_hdr_t; 134 135 static ztest_shared_hdr_t *ztest_shared_hdr; 136 137 typedef struct ztest_shared_opts { 138 char zo_pool[MAXNAMELEN]; 139 char zo_dir[MAXNAMELEN]; 140 char zo_alt_ztest[MAXNAMELEN]; 141 char zo_alt_libpath[MAXNAMELEN]; 142 uint64_t zo_vdevs; 143 uint64_t zo_vdevtime; 144 size_t zo_vdev_size; 145 int zo_ashift; 146 int zo_mirrors; 147 int zo_raidz; 148 int zo_raidz_parity; 149 int zo_datasets; 150 int zo_threads; 151 uint64_t zo_passtime; 152 uint64_t zo_killrate; 153 int zo_verbose; 154 int zo_init; 155 uint64_t zo_time; 156 uint64_t zo_maxloops; 157 uint64_t zo_metaslab_gang_bang; 158 } ztest_shared_opts_t; 159 160 static const ztest_shared_opts_t ztest_opts_defaults = { 161 .zo_pool = { 'z', 't', 'e', 's', 't', '\0' }, 162 .zo_dir = { '/', 't', 'm', 'p', '\0' }, 163 .zo_alt_ztest = { '\0' }, 164 .zo_alt_libpath = { '\0' }, 165 .zo_vdevs = 5, 166 .zo_ashift = SPA_MINBLOCKSHIFT, 167 .zo_mirrors = 2, 168 .zo_raidz = 4, 169 .zo_raidz_parity = 1, 170 .zo_vdev_size = SPA_MINDEVSIZE, 171 .zo_datasets = 7, 172 .zo_threads = 23, 173 .zo_passtime = 60, /* 60 seconds */ 174 .zo_killrate = 70, /* 70% kill rate */ 175 .zo_verbose = 0, 176 .zo_init = 1, 177 .zo_time = 300, /* 5 minutes */ 178 .zo_maxloops = 50, /* max loops during spa_freeze() */ 179 .zo_metaslab_gang_bang = 32 << 10 180 }; 181 182 extern uint64_t metaslab_gang_bang; 183 extern uint64_t metaslab_df_alloc_threshold; 184 185 static ztest_shared_opts_t *ztest_shared_opts; 186 static ztest_shared_opts_t ztest_opts; 187 188 typedef struct ztest_shared_ds { 189 uint64_t zd_seq; 190 } ztest_shared_ds_t; 191 192 static ztest_shared_ds_t *ztest_shared_ds; 193 #define ZTEST_GET_SHARED_DS(d) (&ztest_shared_ds[d]) 194 195 #define BT_MAGIC 0x123456789abcdefULL 196 #define MAXFAULTS() \ 197 (MAX(zs->zs_mirrors, 1) * (ztest_opts.zo_raidz_parity + 1) - 1) 198 199 enum ztest_io_type { 200 ZTEST_IO_WRITE_TAG, 201 ZTEST_IO_WRITE_PATTERN, 202 ZTEST_IO_WRITE_ZEROES, 203 ZTEST_IO_TRUNCATE, 204 ZTEST_IO_SETATTR, 205 ZTEST_IO_TYPES 206 }; 207 208 typedef struct ztest_block_tag { 209 uint64_t bt_magic; 210 uint64_t bt_objset; 211 uint64_t bt_object; 212 uint64_t bt_offset; 213 uint64_t bt_gen; 214 uint64_t bt_txg; 215 uint64_t bt_crtxg; 216 } ztest_block_tag_t; 217 218 typedef struct bufwad { 219 uint64_t bw_index; 220 uint64_t bw_txg; 221 uint64_t bw_data; 222 } bufwad_t; 223 224 /* 225 * XXX -- fix zfs range locks to be generic so we can use them here. 226 */ 227 typedef enum { 228 RL_READER, 229 RL_WRITER, 230 RL_APPEND 231 } rl_type_t; 232 233 typedef struct rll { 234 void *rll_writer; 235 int rll_readers; 236 mutex_t rll_lock; 237 cond_t rll_cv; 238 } rll_t; 239 240 typedef struct rl { 241 uint64_t rl_object; 242 uint64_t rl_offset; 243 uint64_t rl_size; 244 rll_t *rl_lock; 245 } rl_t; 246 247 #define ZTEST_RANGE_LOCKS 64 248 #define ZTEST_OBJECT_LOCKS 64 249 250 /* 251 * Object descriptor. Used as a template for object lookup/create/remove. 252 */ 253 typedef struct ztest_od { 254 uint64_t od_dir; 255 uint64_t od_object; 256 dmu_object_type_t od_type; 257 dmu_object_type_t od_crtype; 258 uint64_t od_blocksize; 259 uint64_t od_crblocksize; 260 uint64_t od_gen; 261 uint64_t od_crgen; 262 char od_name[MAXNAMELEN]; 263 } ztest_od_t; 264 265 /* 266 * Per-dataset state. 267 */ 268 typedef struct ztest_ds { 269 ztest_shared_ds_t *zd_shared; 270 objset_t *zd_os; 271 rwlock_t zd_zilog_lock; 272 zilog_t *zd_zilog; 273 ztest_od_t *zd_od; /* debugging aid */ 274 char zd_name[MAXNAMELEN]; 275 mutex_t zd_dirobj_lock; 276 rll_t zd_object_lock[ZTEST_OBJECT_LOCKS]; 277 rll_t zd_range_lock[ZTEST_RANGE_LOCKS]; 278 } ztest_ds_t; 279 280 /* 281 * Per-iteration state. 282 */ 283 typedef void ztest_func_t(ztest_ds_t *zd, uint64_t id); 284 285 typedef struct ztest_info { 286 ztest_func_t *zi_func; /* test function */ 287 uint64_t zi_iters; /* iterations per execution */ 288 uint64_t *zi_interval; /* execute every <interval> seconds */ 289 } ztest_info_t; 290 291 typedef struct ztest_shared_callstate { 292 uint64_t zc_count; /* per-pass count */ 293 uint64_t zc_time; /* per-pass time */ 294 uint64_t zc_next; /* next time to call this function */ 295 } ztest_shared_callstate_t; 296 297 static ztest_shared_callstate_t *ztest_shared_callstate; 298 #define ZTEST_GET_SHARED_CALLSTATE(c) (&ztest_shared_callstate[c]) 299 300 /* 301 * Note: these aren't static because we want dladdr() to work. 302 */ 303 ztest_func_t ztest_dmu_read_write; 304 ztest_func_t ztest_dmu_write_parallel; 305 ztest_func_t ztest_dmu_object_alloc_free; 306 ztest_func_t ztest_dmu_commit_callbacks; 307 ztest_func_t ztest_zap; 308 ztest_func_t ztest_zap_parallel; 309 ztest_func_t ztest_zil_commit; 310 ztest_func_t ztest_zil_remount; 311 ztest_func_t ztest_dmu_read_write_zcopy; 312 ztest_func_t ztest_dmu_objset_create_destroy; 313 ztest_func_t ztest_dmu_prealloc; 314 ztest_func_t ztest_fzap; 315 ztest_func_t ztest_dmu_snapshot_create_destroy; 316 ztest_func_t ztest_dsl_prop_get_set; 317 ztest_func_t ztest_spa_prop_get_set; 318 ztest_func_t ztest_spa_create_destroy; 319 ztest_func_t ztest_fault_inject; 320 ztest_func_t ztest_ddt_repair; 321 ztest_func_t ztest_dmu_snapshot_hold; 322 ztest_func_t ztest_spa_rename; 323 ztest_func_t ztest_scrub; 324 ztest_func_t ztest_dsl_dataset_promote_busy; 325 ztest_func_t ztest_vdev_attach_detach; 326 ztest_func_t ztest_vdev_LUN_growth; 327 ztest_func_t ztest_vdev_add_remove; 328 ztest_func_t ztest_vdev_aux_add_remove; 329 ztest_func_t ztest_split_pool; 330 ztest_func_t ztest_reguid; 331 332 uint64_t zopt_always = 0ULL * NANOSEC; /* all the time */ 333 uint64_t zopt_incessant = 1ULL * NANOSEC / 10; /* every 1/10 second */ 334 uint64_t zopt_often = 1ULL * NANOSEC; /* every second */ 335 uint64_t zopt_sometimes = 10ULL * NANOSEC; /* every 10 seconds */ 336 uint64_t zopt_rarely = 60ULL * NANOSEC; /* every 60 seconds */ 337 338 ztest_info_t ztest_info[] = { 339 { ztest_dmu_read_write, 1, &zopt_always }, 340 { ztest_dmu_write_parallel, 10, &zopt_always }, 341 { ztest_dmu_object_alloc_free, 1, &zopt_always }, 342 { ztest_dmu_commit_callbacks, 1, &zopt_always }, 343 { ztest_zap, 30, &zopt_always }, 344 { ztest_zap_parallel, 100, &zopt_always }, 345 { ztest_split_pool, 1, &zopt_always }, 346 { ztest_zil_commit, 1, &zopt_incessant }, 347 { ztest_zil_remount, 1, &zopt_sometimes }, 348 { ztest_dmu_read_write_zcopy, 1, &zopt_often }, 349 { ztest_dmu_objset_create_destroy, 1, &zopt_often }, 350 { ztest_dsl_prop_get_set, 1, &zopt_often }, 351 { ztest_spa_prop_get_set, 1, &zopt_sometimes }, 352 #if 0 353 { ztest_dmu_prealloc, 1, &zopt_sometimes }, 354 #endif 355 { ztest_fzap, 1, &zopt_sometimes }, 356 { ztest_dmu_snapshot_create_destroy, 1, &zopt_sometimes }, 357 { ztest_spa_create_destroy, 1, &zopt_sometimes }, 358 { ztest_fault_inject, 1, &zopt_sometimes }, 359 { ztest_ddt_repair, 1, &zopt_sometimes }, 360 { ztest_dmu_snapshot_hold, 1, &zopt_sometimes }, 361 { ztest_reguid, 1, &zopt_sometimes }, 362 { ztest_spa_rename, 1, &zopt_rarely }, 363 { ztest_scrub, 1, &zopt_rarely }, 364 { ztest_dsl_dataset_promote_busy, 1, &zopt_rarely }, 365 { ztest_vdev_attach_detach, 1, &zopt_rarely }, 366 { ztest_vdev_LUN_growth, 1, &zopt_rarely }, 367 { ztest_vdev_add_remove, 1, 368 &ztest_opts.zo_vdevtime }, 369 { ztest_vdev_aux_add_remove, 1, 370 &ztest_opts.zo_vdevtime }, 371 }; 372 373 #define ZTEST_FUNCS (sizeof (ztest_info) / sizeof (ztest_info_t)) 374 375 /* 376 * The following struct is used to hold a list of uncalled commit callbacks. 377 * The callbacks are ordered by txg number. 378 */ 379 typedef struct ztest_cb_list { 380 mutex_t zcl_callbacks_lock; 381 list_t zcl_callbacks; 382 } ztest_cb_list_t; 383 384 /* 385 * Stuff we need to share writably between parent and child. 386 */ 387 typedef struct ztest_shared { 388 boolean_t zs_do_init; 389 hrtime_t zs_proc_start; 390 hrtime_t zs_proc_stop; 391 hrtime_t zs_thread_start; 392 hrtime_t zs_thread_stop; 393 hrtime_t zs_thread_kill; 394 uint64_t zs_enospc_count; 395 uint64_t zs_vdev_next_leaf; 396 uint64_t zs_vdev_aux; 397 uint64_t zs_alloc; 398 uint64_t zs_space; 399 uint64_t zs_splits; 400 uint64_t zs_mirrors; 401 uint64_t zs_metaslab_sz; 402 uint64_t zs_metaslab_df_alloc_threshold; 403 uint64_t zs_guid; 404 } ztest_shared_t; 405 406 #define ID_PARALLEL -1ULL 407 408 static char ztest_dev_template[] = "%s/%s.%llua"; 409 static char ztest_aux_template[] = "%s/%s.%s.%llu"; 410 ztest_shared_t *ztest_shared; 411 412 static spa_t *ztest_spa = NULL; 413 static ztest_ds_t *ztest_ds; 414 415 static mutex_t ztest_vdev_lock; 416 static rwlock_t ztest_name_lock; 417 418 static boolean_t ztest_dump_core = B_TRUE; 419 static boolean_t ztest_exiting; 420 421 /* Global commit callback list */ 422 static ztest_cb_list_t zcl; 423 424 enum ztest_object { 425 ZTEST_META_DNODE = 0, 426 ZTEST_DIROBJ, 427 ZTEST_OBJECTS 428 }; 429 430 static void usage(boolean_t) __NORETURN; 431 432 /* 433 * These libumem hooks provide a reasonable set of defaults for the allocator's 434 * debugging facilities. 435 */ 436 const char * 437 _umem_debug_init() 438 { 439 return ("default,verbose"); /* $UMEM_DEBUG setting */ 440 } 441 442 const char * 443 _umem_logging_init(void) 444 { 445 return ("fail,contents"); /* $UMEM_LOGGING setting */ 446 } 447 448 #define FATAL_MSG_SZ 1024 449 450 char *fatal_msg; 451 452 static void 453 fatal(int do_perror, char *message, ...) 454 { 455 va_list args; 456 int save_errno = errno; 457 char buf[FATAL_MSG_SZ]; 458 459 (void) fflush(stdout); 460 461 va_start(args, message); 462 (void) sprintf(buf, "ztest: "); 463 /* LINTED */ 464 (void) vsprintf(buf + strlen(buf), message, args); 465 va_end(args); 466 if (do_perror) { 467 (void) snprintf(buf + strlen(buf), FATAL_MSG_SZ - strlen(buf), 468 ": %s", strerror(save_errno)); 469 } 470 (void) fprintf(stderr, "%s\n", buf); 471 fatal_msg = buf; /* to ease debugging */ 472 if (ztest_dump_core) 473 abort(); 474 exit(3); 475 } 476 477 static int 478 str2shift(const char *buf) 479 { 480 const char *ends = "BKMGTPEZ"; 481 int i; 482 483 if (buf[0] == '\0') 484 return (0); 485 for (i = 0; i < strlen(ends); i++) { 486 if (toupper(buf[0]) == ends[i]) 487 break; 488 } 489 if (i == strlen(ends)) { 490 (void) fprintf(stderr, "ztest: invalid bytes suffix: %s\n", 491 buf); 492 usage(B_FALSE); 493 } 494 if (buf[1] == '\0' || (toupper(buf[1]) == 'B' && buf[2] == '\0')) { 495 return (10*i); 496 } 497 (void) fprintf(stderr, "ztest: invalid bytes suffix: %s\n", buf); 498 usage(B_FALSE); 499 /* NOTREACHED */ 500 } 501 502 static uint64_t 503 nicenumtoull(const char *buf) 504 { 505 char *end; 506 uint64_t val; 507 508 val = strtoull(buf, &end, 0); 509 if (end == buf) { 510 (void) fprintf(stderr, "ztest: bad numeric value: %s\n", buf); 511 usage(B_FALSE); 512 } else if (end[0] == '.') { 513 double fval = strtod(buf, &end); 514 fval *= pow(2, str2shift(end)); 515 if (fval > UINT64_MAX) { 516 (void) fprintf(stderr, "ztest: value too large: %s\n", 517 buf); 518 usage(B_FALSE); 519 } 520 val = (uint64_t)fval; 521 } else { 522 int shift = str2shift(end); 523 if (shift >= 64 || (val << shift) >> shift != val) { 524 (void) fprintf(stderr, "ztest: value too large: %s\n", 525 buf); 526 usage(B_FALSE); 527 } 528 val <<= shift; 529 } 530 return (val); 531 } 532 533 static void 534 usage(boolean_t requested) 535 { 536 const ztest_shared_opts_t *zo = &ztest_opts_defaults; 537 538 char nice_vdev_size[10]; 539 char nice_gang_bang[10]; 540 FILE *fp = requested ? stdout : stderr; 541 542 nicenum(zo->zo_vdev_size, nice_vdev_size); 543 nicenum(zo->zo_metaslab_gang_bang, nice_gang_bang); 544 545 (void) fprintf(fp, "Usage: %s\n" 546 "\t[-v vdevs (default: %llu)]\n" 547 "\t[-s size_of_each_vdev (default: %s)]\n" 548 "\t[-a alignment_shift (default: %d)] use 0 for random\n" 549 "\t[-m mirror_copies (default: %d)]\n" 550 "\t[-r raidz_disks (default: %d)]\n" 551 "\t[-R raidz_parity (default: %d)]\n" 552 "\t[-d datasets (default: %d)]\n" 553 "\t[-t threads (default: %d)]\n" 554 "\t[-g gang_block_threshold (default: %s)]\n" 555 "\t[-i init_count (default: %d)] initialize pool i times\n" 556 "\t[-k kill_percentage (default: %llu%%)]\n" 557 "\t[-p pool_name (default: %s)]\n" 558 "\t[-f dir (default: %s)] file directory for vdev files\n" 559 "\t[-V] verbose (use multiple times for ever more blather)\n" 560 "\t[-E] use existing pool instead of creating new one\n" 561 "\t[-T time (default: %llu sec)] total run time\n" 562 "\t[-F freezeloops (default: %llu)] max loops in spa_freeze()\n" 563 "\t[-P passtime (default: %llu sec)] time per pass\n" 564 "\t[-B alt_ztest (default: <none>)] alternate ztest path\n" 565 "\t[-h] (print help)\n" 566 "", 567 zo->zo_pool, 568 (u_longlong_t)zo->zo_vdevs, /* -v */ 569 nice_vdev_size, /* -s */ 570 zo->zo_ashift, /* -a */ 571 zo->zo_mirrors, /* -m */ 572 zo->zo_raidz, /* -r */ 573 zo->zo_raidz_parity, /* -R */ 574 zo->zo_datasets, /* -d */ 575 zo->zo_threads, /* -t */ 576 nice_gang_bang, /* -g */ 577 zo->zo_init, /* -i */ 578 (u_longlong_t)zo->zo_killrate, /* -k */ 579 zo->zo_pool, /* -p */ 580 zo->zo_dir, /* -f */ 581 (u_longlong_t)zo->zo_time, /* -T */ 582 (u_longlong_t)zo->zo_maxloops, /* -F */ 583 (u_longlong_t)zo->zo_passtime); 584 exit(requested ? 0 : 1); 585 } 586 587 static void 588 process_options(int argc, char **argv) 589 { 590 char *path; 591 ztest_shared_opts_t *zo = &ztest_opts; 592 593 int opt; 594 uint64_t value; 595 char altdir[MAXNAMELEN] = { 0 }; 596 597 bcopy(&ztest_opts_defaults, zo, sizeof (*zo)); 598 599 while ((opt = getopt(argc, argv, 600 "v:s:a:m:r:R:d:t:g:i:k:p:f:VET:P:hF:B:")) != EOF) { 601 value = 0; 602 switch (opt) { 603 case 'v': 604 case 's': 605 case 'a': 606 case 'm': 607 case 'r': 608 case 'R': 609 case 'd': 610 case 't': 611 case 'g': 612 case 'i': 613 case 'k': 614 case 'T': 615 case 'P': 616 case 'F': 617 value = nicenumtoull(optarg); 618 } 619 switch (opt) { 620 case 'v': 621 zo->zo_vdevs = value; 622 break; 623 case 's': 624 zo->zo_vdev_size = MAX(SPA_MINDEVSIZE, value); 625 break; 626 case 'a': 627 zo->zo_ashift = value; 628 break; 629 case 'm': 630 zo->zo_mirrors = value; 631 break; 632 case 'r': 633 zo->zo_raidz = MAX(1, value); 634 break; 635 case 'R': 636 zo->zo_raidz_parity = MIN(MAX(value, 1), 3); 637 break; 638 case 'd': 639 zo->zo_datasets = MAX(1, value); 640 break; 641 case 't': 642 zo->zo_threads = MAX(1, value); 643 break; 644 case 'g': 645 zo->zo_metaslab_gang_bang = MAX(SPA_MINBLOCKSIZE << 1, 646 value); 647 break; 648 case 'i': 649 zo->zo_init = value; 650 break; 651 case 'k': 652 zo->zo_killrate = value; 653 break; 654 case 'p': 655 (void) strlcpy(zo->zo_pool, optarg, 656 sizeof (zo->zo_pool)); 657 break; 658 case 'f': 659 path = realpath(optarg, NULL); 660 if (path == NULL) { 661 (void) fprintf(stderr, "error: %s: %s\n", 662 optarg, strerror(errno)); 663 usage(B_FALSE); 664 } else { 665 (void) strlcpy(zo->zo_dir, path, 666 sizeof (zo->zo_dir)); 667 } 668 break; 669 case 'V': 670 zo->zo_verbose++; 671 break; 672 case 'E': 673 zo->zo_init = 0; 674 break; 675 case 'T': 676 zo->zo_time = value; 677 break; 678 case 'P': 679 zo->zo_passtime = MAX(1, value); 680 break; 681 case 'F': 682 zo->zo_maxloops = MAX(1, value); 683 break; 684 case 'B': 685 (void) strlcpy(altdir, optarg, sizeof (altdir)); 686 break; 687 case 'h': 688 usage(B_TRUE); 689 break; 690 case '?': 691 default: 692 usage(B_FALSE); 693 break; 694 } 695 } 696 697 zo->zo_raidz_parity = MIN(zo->zo_raidz_parity, zo->zo_raidz - 1); 698 699 zo->zo_vdevtime = 700 (zo->zo_vdevs > 0 ? zo->zo_time * NANOSEC / zo->zo_vdevs : 701 UINT64_MAX >> 2); 702 703 if (strlen(altdir) > 0) { 704 char cmd[MAXNAMELEN]; 705 char realaltdir[MAXNAMELEN]; 706 char *bin; 707 char *ztest; 708 char *isa; 709 int isalen; 710 711 (void) realpath(getexecname(), cmd); 712 if (0 != access(altdir, F_OK)) { 713 ztest_dump_core = B_FALSE; 714 fatal(B_TRUE, "invalid alternate ztest path: %s", 715 altdir); 716 } 717 VERIFY(NULL != realpath(altdir, realaltdir)); 718 719 /* 720 * 'cmd' should be of the form "<anything>/usr/bin/<isa>/ztest". 721 * We want to extract <isa> to determine if we should use 722 * 32 or 64 bit binaries. 723 */ 724 bin = strstr(cmd, "/usr/bin/"); 725 ztest = strstr(bin, "/ztest"); 726 isa = bin + 9; 727 isalen = ztest - isa; 728 (void) snprintf(zo->zo_alt_ztest, sizeof (zo->zo_alt_ztest), 729 "%s/usr/bin/%.*s/ztest", realaltdir, isalen, isa); 730 (void) snprintf(zo->zo_alt_libpath, sizeof (zo->zo_alt_libpath), 731 "%s/usr/lib/%.*s", realaltdir, isalen, isa); 732 733 if (0 != access(zo->zo_alt_ztest, X_OK)) { 734 ztest_dump_core = B_FALSE; 735 fatal(B_TRUE, "invalid alternate ztest: %s", 736 zo->zo_alt_ztest); 737 } else if (0 != access(zo->zo_alt_libpath, X_OK)) { 738 ztest_dump_core = B_FALSE; 739 fatal(B_TRUE, "invalid alternate lib directory %s", 740 zo->zo_alt_libpath); 741 } 742 } 743 } 744 745 static void 746 ztest_kill(ztest_shared_t *zs) 747 { 748 zs->zs_alloc = metaslab_class_get_alloc(spa_normal_class(ztest_spa)); 749 zs->zs_space = metaslab_class_get_space(spa_normal_class(ztest_spa)); 750 (void) kill(getpid(), SIGKILL); 751 } 752 753 static uint64_t 754 ztest_random(uint64_t range) 755 { 756 uint64_t r; 757 758 if (range == 0) 759 return (0); 760 761 if (read(ZTEST_FD_RAND, &r, sizeof (r)) != sizeof (r)) 762 fatal(1, "short read from /dev/urandom"); 763 764 return (r % range); 765 } 766 767 /* ARGSUSED */ 768 static void 769 ztest_record_enospc(const char *s) 770 { 771 ztest_shared->zs_enospc_count++; 772 } 773 774 static uint64_t 775 ztest_get_ashift(void) 776 { 777 if (ztest_opts.zo_ashift == 0) 778 return (SPA_MINBLOCKSHIFT + ztest_random(3)); 779 return (ztest_opts.zo_ashift); 780 } 781 782 static nvlist_t * 783 make_vdev_file(char *path, char *aux, size_t size, uint64_t ashift) 784 { 785 char pathbuf[MAXPATHLEN]; 786 uint64_t vdev; 787 nvlist_t *file; 788 789 if (ashift == 0) 790 ashift = ztest_get_ashift(); 791 792 if (path == NULL) { 793 path = pathbuf; 794 795 if (aux != NULL) { 796 vdev = ztest_shared->zs_vdev_aux; 797 (void) snprintf(path, sizeof (pathbuf), 798 ztest_aux_template, ztest_opts.zo_dir, 799 ztest_opts.zo_pool, aux, vdev); 800 } else { 801 vdev = ztest_shared->zs_vdev_next_leaf++; 802 (void) snprintf(path, sizeof (pathbuf), 803 ztest_dev_template, ztest_opts.zo_dir, 804 ztest_opts.zo_pool, vdev); 805 } 806 } 807 808 if (size != 0) { 809 int fd = open(path, O_RDWR | O_CREAT | O_TRUNC, 0666); 810 if (fd == -1) 811 fatal(1, "can't open %s", path); 812 if (ftruncate(fd, size) != 0) 813 fatal(1, "can't ftruncate %s", path); 814 (void) close(fd); 815 } 816 817 VERIFY(nvlist_alloc(&file, NV_UNIQUE_NAME, 0) == 0); 818 VERIFY(nvlist_add_string(file, ZPOOL_CONFIG_TYPE, VDEV_TYPE_FILE) == 0); 819 VERIFY(nvlist_add_string(file, ZPOOL_CONFIG_PATH, path) == 0); 820 VERIFY(nvlist_add_uint64(file, ZPOOL_CONFIG_ASHIFT, ashift) == 0); 821 822 return (file); 823 } 824 825 static nvlist_t * 826 make_vdev_raidz(char *path, char *aux, size_t size, uint64_t ashift, int r) 827 { 828 nvlist_t *raidz, **child; 829 int c; 830 831 if (r < 2) 832 return (make_vdev_file(path, aux, size, ashift)); 833 child = umem_alloc(r * sizeof (nvlist_t *), UMEM_NOFAIL); 834 835 for (c = 0; c < r; c++) 836 child[c] = make_vdev_file(path, aux, size, ashift); 837 838 VERIFY(nvlist_alloc(&raidz, NV_UNIQUE_NAME, 0) == 0); 839 VERIFY(nvlist_add_string(raidz, ZPOOL_CONFIG_TYPE, 840 VDEV_TYPE_RAIDZ) == 0); 841 VERIFY(nvlist_add_uint64(raidz, ZPOOL_CONFIG_NPARITY, 842 ztest_opts.zo_raidz_parity) == 0); 843 VERIFY(nvlist_add_nvlist_array(raidz, ZPOOL_CONFIG_CHILDREN, 844 child, r) == 0); 845 846 for (c = 0; c < r; c++) 847 nvlist_free(child[c]); 848 849 umem_free(child, r * sizeof (nvlist_t *)); 850 851 return (raidz); 852 } 853 854 static nvlist_t * 855 make_vdev_mirror(char *path, char *aux, size_t size, uint64_t ashift, 856 int r, int m) 857 { 858 nvlist_t *mirror, **child; 859 int c; 860 861 if (m < 1) 862 return (make_vdev_raidz(path, aux, size, ashift, r)); 863 864 child = umem_alloc(m * sizeof (nvlist_t *), UMEM_NOFAIL); 865 866 for (c = 0; c < m; c++) 867 child[c] = make_vdev_raidz(path, aux, size, ashift, r); 868 869 VERIFY(nvlist_alloc(&mirror, NV_UNIQUE_NAME, 0) == 0); 870 VERIFY(nvlist_add_string(mirror, ZPOOL_CONFIG_TYPE, 871 VDEV_TYPE_MIRROR) == 0); 872 VERIFY(nvlist_add_nvlist_array(mirror, ZPOOL_CONFIG_CHILDREN, 873 child, m) == 0); 874 875 for (c = 0; c < m; c++) 876 nvlist_free(child[c]); 877 878 umem_free(child, m * sizeof (nvlist_t *)); 879 880 return (mirror); 881 } 882 883 static nvlist_t * 884 make_vdev_root(char *path, char *aux, size_t size, uint64_t ashift, 885 int log, int r, int m, int t) 886 { 887 nvlist_t *root, **child; 888 int c; 889 890 ASSERT(t > 0); 891 892 child = umem_alloc(t * sizeof (nvlist_t *), UMEM_NOFAIL); 893 894 for (c = 0; c < t; c++) { 895 child[c] = make_vdev_mirror(path, aux, size, ashift, r, m); 896 VERIFY(nvlist_add_uint64(child[c], ZPOOL_CONFIG_IS_LOG, 897 log) == 0); 898 } 899 900 VERIFY(nvlist_alloc(&root, NV_UNIQUE_NAME, 0) == 0); 901 VERIFY(nvlist_add_string(root, ZPOOL_CONFIG_TYPE, VDEV_TYPE_ROOT) == 0); 902 VERIFY(nvlist_add_nvlist_array(root, aux ? aux : ZPOOL_CONFIG_CHILDREN, 903 child, t) == 0); 904 905 for (c = 0; c < t; c++) 906 nvlist_free(child[c]); 907 908 umem_free(child, t * sizeof (nvlist_t *)); 909 910 return (root); 911 } 912 913 static int 914 ztest_random_blocksize(void) 915 { 916 return (1 << (SPA_MINBLOCKSHIFT + 917 ztest_random(SPA_MAXBLOCKSHIFT - SPA_MINBLOCKSHIFT + 1))); 918 } 919 920 static int 921 ztest_random_ibshift(void) 922 { 923 return (DN_MIN_INDBLKSHIFT + 924 ztest_random(DN_MAX_INDBLKSHIFT - DN_MIN_INDBLKSHIFT + 1)); 925 } 926 927 static uint64_t 928 ztest_random_vdev_top(spa_t *spa, boolean_t log_ok) 929 { 930 uint64_t top; 931 vdev_t *rvd = spa->spa_root_vdev; 932 vdev_t *tvd; 933 934 ASSERT(spa_config_held(spa, SCL_ALL, RW_READER) != 0); 935 936 do { 937 top = ztest_random(rvd->vdev_children); 938 tvd = rvd->vdev_child[top]; 939 } while (tvd->vdev_ishole || (tvd->vdev_islog && !log_ok) || 940 tvd->vdev_mg == NULL || tvd->vdev_mg->mg_class == NULL); 941 942 return (top); 943 } 944 945 static uint64_t 946 ztest_random_dsl_prop(zfs_prop_t prop) 947 { 948 uint64_t value; 949 950 do { 951 value = zfs_prop_random_value(prop, ztest_random(-1ULL)); 952 } while (prop == ZFS_PROP_CHECKSUM && value == ZIO_CHECKSUM_OFF); 953 954 return (value); 955 } 956 957 static int 958 ztest_dsl_prop_set_uint64(char *osname, zfs_prop_t prop, uint64_t value, 959 boolean_t inherit) 960 { 961 const char *propname = zfs_prop_to_name(prop); 962 const char *valname; 963 char setpoint[MAXPATHLEN]; 964 uint64_t curval; 965 int error; 966 967 error = dsl_prop_set(osname, propname, 968 (inherit ? ZPROP_SRC_NONE : ZPROP_SRC_LOCAL), 969 sizeof (value), 1, &value); 970 971 if (error == ENOSPC) { 972 ztest_record_enospc(FTAG); 973 return (error); 974 } 975 ASSERT3U(error, ==, 0); 976 977 VERIFY3U(dsl_prop_get(osname, propname, sizeof (curval), 978 1, &curval, setpoint), ==, 0); 979 980 if (ztest_opts.zo_verbose >= 6) { 981 VERIFY(zfs_prop_index_to_string(prop, curval, &valname) == 0); 982 (void) printf("%s %s = %s at '%s'\n", 983 osname, propname, valname, setpoint); 984 } 985 986 return (error); 987 } 988 989 static int 990 ztest_spa_prop_set_uint64(zpool_prop_t prop, uint64_t value) 991 { 992 spa_t *spa = ztest_spa; 993 nvlist_t *props = NULL; 994 int error; 995 996 VERIFY(nvlist_alloc(&props, NV_UNIQUE_NAME, 0) == 0); 997 VERIFY(nvlist_add_uint64(props, zpool_prop_to_name(prop), value) == 0); 998 999 error = spa_prop_set(spa, props); 1000 1001 nvlist_free(props); 1002 1003 if (error == ENOSPC) { 1004 ztest_record_enospc(FTAG); 1005 return (error); 1006 } 1007 ASSERT3U(error, ==, 0); 1008 1009 return (error); 1010 } 1011 1012 static void 1013 ztest_rll_init(rll_t *rll) 1014 { 1015 rll->rll_writer = NULL; 1016 rll->rll_readers = 0; 1017 VERIFY(_mutex_init(&rll->rll_lock, USYNC_THREAD, NULL) == 0); 1018 VERIFY(cond_init(&rll->rll_cv, USYNC_THREAD, NULL) == 0); 1019 } 1020 1021 static void 1022 ztest_rll_destroy(rll_t *rll) 1023 { 1024 ASSERT(rll->rll_writer == NULL); 1025 ASSERT(rll->rll_readers == 0); 1026 VERIFY(_mutex_destroy(&rll->rll_lock) == 0); 1027 VERIFY(cond_destroy(&rll->rll_cv) == 0); 1028 } 1029 1030 static void 1031 ztest_rll_lock(rll_t *rll, rl_type_t type) 1032 { 1033 VERIFY(mutex_lock(&rll->rll_lock) == 0); 1034 1035 if (type == RL_READER) { 1036 while (rll->rll_writer != NULL) 1037 (void) cond_wait(&rll->rll_cv, &rll->rll_lock); 1038 rll->rll_readers++; 1039 } else { 1040 while (rll->rll_writer != NULL || rll->rll_readers) 1041 (void) cond_wait(&rll->rll_cv, &rll->rll_lock); 1042 rll->rll_writer = curthread; 1043 } 1044 1045 VERIFY(mutex_unlock(&rll->rll_lock) == 0); 1046 } 1047 1048 static void 1049 ztest_rll_unlock(rll_t *rll) 1050 { 1051 VERIFY(mutex_lock(&rll->rll_lock) == 0); 1052 1053 if (rll->rll_writer) { 1054 ASSERT(rll->rll_readers == 0); 1055 rll->rll_writer = NULL; 1056 } else { 1057 ASSERT(rll->rll_readers != 0); 1058 ASSERT(rll->rll_writer == NULL); 1059 rll->rll_readers--; 1060 } 1061 1062 if (rll->rll_writer == NULL && rll->rll_readers == 0) 1063 VERIFY(cond_broadcast(&rll->rll_cv) == 0); 1064 1065 VERIFY(mutex_unlock(&rll->rll_lock) == 0); 1066 } 1067 1068 static void 1069 ztest_object_lock(ztest_ds_t *zd, uint64_t object, rl_type_t type) 1070 { 1071 rll_t *rll = &zd->zd_object_lock[object & (ZTEST_OBJECT_LOCKS - 1)]; 1072 1073 ztest_rll_lock(rll, type); 1074 } 1075 1076 static void 1077 ztest_object_unlock(ztest_ds_t *zd, uint64_t object) 1078 { 1079 rll_t *rll = &zd->zd_object_lock[object & (ZTEST_OBJECT_LOCKS - 1)]; 1080 1081 ztest_rll_unlock(rll); 1082 } 1083 1084 static rl_t * 1085 ztest_range_lock(ztest_ds_t *zd, uint64_t object, uint64_t offset, 1086 uint64_t size, rl_type_t type) 1087 { 1088 uint64_t hash = object ^ (offset % (ZTEST_RANGE_LOCKS + 1)); 1089 rll_t *rll = &zd->zd_range_lock[hash & (ZTEST_RANGE_LOCKS - 1)]; 1090 rl_t *rl; 1091 1092 rl = umem_alloc(sizeof (*rl), UMEM_NOFAIL); 1093 rl->rl_object = object; 1094 rl->rl_offset = offset; 1095 rl->rl_size = size; 1096 rl->rl_lock = rll; 1097 1098 ztest_rll_lock(rll, type); 1099 1100 return (rl); 1101 } 1102 1103 static void 1104 ztest_range_unlock(rl_t *rl) 1105 { 1106 rll_t *rll = rl->rl_lock; 1107 1108 ztest_rll_unlock(rll); 1109 1110 umem_free(rl, sizeof (*rl)); 1111 } 1112 1113 static void 1114 ztest_zd_init(ztest_ds_t *zd, ztest_shared_ds_t *szd, objset_t *os) 1115 { 1116 zd->zd_os = os; 1117 zd->zd_zilog = dmu_objset_zil(os); 1118 zd->zd_shared = szd; 1119 dmu_objset_name(os, zd->zd_name); 1120 1121 if (zd->zd_shared != NULL) 1122 zd->zd_shared->zd_seq = 0; 1123 1124 VERIFY(rwlock_init(&zd->zd_zilog_lock, USYNC_THREAD, NULL) == 0); 1125 VERIFY(_mutex_init(&zd->zd_dirobj_lock, USYNC_THREAD, NULL) == 0); 1126 1127 for (int l = 0; l < ZTEST_OBJECT_LOCKS; l++) 1128 ztest_rll_init(&zd->zd_object_lock[l]); 1129 1130 for (int l = 0; l < ZTEST_RANGE_LOCKS; l++) 1131 ztest_rll_init(&zd->zd_range_lock[l]); 1132 } 1133 1134 static void 1135 ztest_zd_fini(ztest_ds_t *zd) 1136 { 1137 VERIFY(_mutex_destroy(&zd->zd_dirobj_lock) == 0); 1138 1139 for (int l = 0; l < ZTEST_OBJECT_LOCKS; l++) 1140 ztest_rll_destroy(&zd->zd_object_lock[l]); 1141 1142 for (int l = 0; l < ZTEST_RANGE_LOCKS; l++) 1143 ztest_rll_destroy(&zd->zd_range_lock[l]); 1144 } 1145 1146 #define TXG_MIGHTWAIT (ztest_random(10) == 0 ? TXG_NOWAIT : TXG_WAIT) 1147 1148 static uint64_t 1149 ztest_tx_assign(dmu_tx_t *tx, uint64_t txg_how, const char *tag) 1150 { 1151 uint64_t txg; 1152 int error; 1153 1154 /* 1155 * Attempt to assign tx to some transaction group. 1156 */ 1157 error = dmu_tx_assign(tx, txg_how); 1158 if (error) { 1159 if (error == ERESTART) { 1160 ASSERT(txg_how == TXG_NOWAIT); 1161 dmu_tx_wait(tx); 1162 } else { 1163 ASSERT3U(error, ==, ENOSPC); 1164 ztest_record_enospc(tag); 1165 } 1166 dmu_tx_abort(tx); 1167 return (0); 1168 } 1169 txg = dmu_tx_get_txg(tx); 1170 ASSERT(txg != 0); 1171 return (txg); 1172 } 1173 1174 static void 1175 ztest_pattern_set(void *buf, uint64_t size, uint64_t value) 1176 { 1177 uint64_t *ip = buf; 1178 uint64_t *ip_end = (uint64_t *)((uintptr_t)buf + (uintptr_t)size); 1179 1180 while (ip < ip_end) 1181 *ip++ = value; 1182 } 1183 1184 static boolean_t 1185 ztest_pattern_match(void *buf, uint64_t size, uint64_t value) 1186 { 1187 uint64_t *ip = buf; 1188 uint64_t *ip_end = (uint64_t *)((uintptr_t)buf + (uintptr_t)size); 1189 uint64_t diff = 0; 1190 1191 while (ip < ip_end) 1192 diff |= (value - *ip++); 1193 1194 return (diff == 0); 1195 } 1196 1197 static void 1198 ztest_bt_generate(ztest_block_tag_t *bt, objset_t *os, uint64_t object, 1199 uint64_t offset, uint64_t gen, uint64_t txg, uint64_t crtxg) 1200 { 1201 bt->bt_magic = BT_MAGIC; 1202 bt->bt_objset = dmu_objset_id(os); 1203 bt->bt_object = object; 1204 bt->bt_offset = offset; 1205 bt->bt_gen = gen; 1206 bt->bt_txg = txg; 1207 bt->bt_crtxg = crtxg; 1208 } 1209 1210 static void 1211 ztest_bt_verify(ztest_block_tag_t *bt, objset_t *os, uint64_t object, 1212 uint64_t offset, uint64_t gen, uint64_t txg, uint64_t crtxg) 1213 { 1214 ASSERT(bt->bt_magic == BT_MAGIC); 1215 ASSERT(bt->bt_objset == dmu_objset_id(os)); 1216 ASSERT(bt->bt_object == object); 1217 ASSERT(bt->bt_offset == offset); 1218 ASSERT(bt->bt_gen <= gen); 1219 ASSERT(bt->bt_txg <= txg); 1220 ASSERT(bt->bt_crtxg == crtxg); 1221 } 1222 1223 static ztest_block_tag_t * 1224 ztest_bt_bonus(dmu_buf_t *db) 1225 { 1226 dmu_object_info_t doi; 1227 ztest_block_tag_t *bt; 1228 1229 dmu_object_info_from_db(db, &doi); 1230 ASSERT3U(doi.doi_bonus_size, <=, db->db_size); 1231 ASSERT3U(doi.doi_bonus_size, >=, sizeof (*bt)); 1232 bt = (void *)((char *)db->db_data + doi.doi_bonus_size - sizeof (*bt)); 1233 1234 return (bt); 1235 } 1236 1237 /* 1238 * ZIL logging ops 1239 */ 1240 1241 #define lrz_type lr_mode 1242 #define lrz_blocksize lr_uid 1243 #define lrz_ibshift lr_gid 1244 #define lrz_bonustype lr_rdev 1245 #define lrz_bonuslen lr_crtime[1] 1246 1247 static void 1248 ztest_log_create(ztest_ds_t *zd, dmu_tx_t *tx, lr_create_t *lr) 1249 { 1250 char *name = (void *)(lr + 1); /* name follows lr */ 1251 size_t namesize = strlen(name) + 1; 1252 itx_t *itx; 1253 1254 if (zil_replaying(zd->zd_zilog, tx)) 1255 return; 1256 1257 itx = zil_itx_create(TX_CREATE, sizeof (*lr) + namesize); 1258 bcopy(&lr->lr_common + 1, &itx->itx_lr + 1, 1259 sizeof (*lr) + namesize - sizeof (lr_t)); 1260 1261 zil_itx_assign(zd->zd_zilog, itx, tx); 1262 } 1263 1264 static void 1265 ztest_log_remove(ztest_ds_t *zd, dmu_tx_t *tx, lr_remove_t *lr, uint64_t object) 1266 { 1267 char *name = (void *)(lr + 1); /* name follows lr */ 1268 size_t namesize = strlen(name) + 1; 1269 itx_t *itx; 1270 1271 if (zil_replaying(zd->zd_zilog, tx)) 1272 return; 1273 1274 itx = zil_itx_create(TX_REMOVE, sizeof (*lr) + namesize); 1275 bcopy(&lr->lr_common + 1, &itx->itx_lr + 1, 1276 sizeof (*lr) + namesize - sizeof (lr_t)); 1277 1278 itx->itx_oid = object; 1279 zil_itx_assign(zd->zd_zilog, itx, tx); 1280 } 1281 1282 static void 1283 ztest_log_write(ztest_ds_t *zd, dmu_tx_t *tx, lr_write_t *lr) 1284 { 1285 itx_t *itx; 1286 itx_wr_state_t write_state = ztest_random(WR_NUM_STATES); 1287 1288 if (zil_replaying(zd->zd_zilog, tx)) 1289 return; 1290 1291 if (lr->lr_length > ZIL_MAX_LOG_DATA) 1292 write_state = WR_INDIRECT; 1293 1294 itx = zil_itx_create(TX_WRITE, 1295 sizeof (*lr) + (write_state == WR_COPIED ? lr->lr_length : 0)); 1296 1297 if (write_state == WR_COPIED && 1298 dmu_read(zd->zd_os, lr->lr_foid, lr->lr_offset, lr->lr_length, 1299 ((lr_write_t *)&itx->itx_lr) + 1, DMU_READ_NO_PREFETCH) != 0) { 1300 zil_itx_destroy(itx); 1301 itx = zil_itx_create(TX_WRITE, sizeof (*lr)); 1302 write_state = WR_NEED_COPY; 1303 } 1304 itx->itx_private = zd; 1305 itx->itx_wr_state = write_state; 1306 itx->itx_sync = (ztest_random(8) == 0); 1307 itx->itx_sod += (write_state == WR_NEED_COPY ? lr->lr_length : 0); 1308 1309 bcopy(&lr->lr_common + 1, &itx->itx_lr + 1, 1310 sizeof (*lr) - sizeof (lr_t)); 1311 1312 zil_itx_assign(zd->zd_zilog, itx, tx); 1313 } 1314 1315 static void 1316 ztest_log_truncate(ztest_ds_t *zd, dmu_tx_t *tx, lr_truncate_t *lr) 1317 { 1318 itx_t *itx; 1319 1320 if (zil_replaying(zd->zd_zilog, tx)) 1321 return; 1322 1323 itx = zil_itx_create(TX_TRUNCATE, sizeof (*lr)); 1324 bcopy(&lr->lr_common + 1, &itx->itx_lr + 1, 1325 sizeof (*lr) - sizeof (lr_t)); 1326 1327 itx->itx_sync = B_FALSE; 1328 zil_itx_assign(zd->zd_zilog, itx, tx); 1329 } 1330 1331 static void 1332 ztest_log_setattr(ztest_ds_t *zd, dmu_tx_t *tx, lr_setattr_t *lr) 1333 { 1334 itx_t *itx; 1335 1336 if (zil_replaying(zd->zd_zilog, tx)) 1337 return; 1338 1339 itx = zil_itx_create(TX_SETATTR, sizeof (*lr)); 1340 bcopy(&lr->lr_common + 1, &itx->itx_lr + 1, 1341 sizeof (*lr) - sizeof (lr_t)); 1342 1343 itx->itx_sync = B_FALSE; 1344 zil_itx_assign(zd->zd_zilog, itx, tx); 1345 } 1346 1347 /* 1348 * ZIL replay ops 1349 */ 1350 static int 1351 ztest_replay_create(ztest_ds_t *zd, lr_create_t *lr, boolean_t byteswap) 1352 { 1353 char *name = (void *)(lr + 1); /* name follows lr */ 1354 objset_t *os = zd->zd_os; 1355 ztest_block_tag_t *bbt; 1356 dmu_buf_t *db; 1357 dmu_tx_t *tx; 1358 uint64_t txg; 1359 int error = 0; 1360 1361 if (byteswap) 1362 byteswap_uint64_array(lr, sizeof (*lr)); 1363 1364 ASSERT(lr->lr_doid == ZTEST_DIROBJ); 1365 ASSERT(name[0] != '\0'); 1366 1367 tx = dmu_tx_create(os); 1368 1369 dmu_tx_hold_zap(tx, lr->lr_doid, B_TRUE, name); 1370 1371 if (lr->lrz_type == DMU_OT_ZAP_OTHER) { 1372 dmu_tx_hold_zap(tx, DMU_NEW_OBJECT, B_TRUE, NULL); 1373 } else { 1374 dmu_tx_hold_bonus(tx, DMU_NEW_OBJECT); 1375 } 1376 1377 txg = ztest_tx_assign(tx, TXG_WAIT, FTAG); 1378 if (txg == 0) 1379 return (ENOSPC); 1380 1381 ASSERT(dmu_objset_zil(os)->zl_replay == !!lr->lr_foid); 1382 1383 if (lr->lrz_type == DMU_OT_ZAP_OTHER) { 1384 if (lr->lr_foid == 0) { 1385 lr->lr_foid = zap_create(os, 1386 lr->lrz_type, lr->lrz_bonustype, 1387 lr->lrz_bonuslen, tx); 1388 } else { 1389 error = zap_create_claim(os, lr->lr_foid, 1390 lr->lrz_type, lr->lrz_bonustype, 1391 lr->lrz_bonuslen, tx); 1392 } 1393 } else { 1394 if (lr->lr_foid == 0) { 1395 lr->lr_foid = dmu_object_alloc(os, 1396 lr->lrz_type, 0, lr->lrz_bonustype, 1397 lr->lrz_bonuslen, tx); 1398 } else { 1399 error = dmu_object_claim(os, lr->lr_foid, 1400 lr->lrz_type, 0, lr->lrz_bonustype, 1401 lr->lrz_bonuslen, tx); 1402 } 1403 } 1404 1405 if (error) { 1406 ASSERT3U(error, ==, EEXIST); 1407 ASSERT(zd->zd_zilog->zl_replay); 1408 dmu_tx_commit(tx); 1409 return (error); 1410 } 1411 1412 ASSERT(lr->lr_foid != 0); 1413 1414 if (lr->lrz_type != DMU_OT_ZAP_OTHER) 1415 VERIFY3U(0, ==, dmu_object_set_blocksize(os, lr->lr_foid, 1416 lr->lrz_blocksize, lr->lrz_ibshift, tx)); 1417 1418 VERIFY3U(0, ==, dmu_bonus_hold(os, lr->lr_foid, FTAG, &db)); 1419 bbt = ztest_bt_bonus(db); 1420 dmu_buf_will_dirty(db, tx); 1421 ztest_bt_generate(bbt, os, lr->lr_foid, -1ULL, lr->lr_gen, txg, txg); 1422 dmu_buf_rele(db, FTAG); 1423 1424 VERIFY3U(0, ==, zap_add(os, lr->lr_doid, name, sizeof (uint64_t), 1, 1425 &lr->lr_foid, tx)); 1426 1427 (void) ztest_log_create(zd, tx, lr); 1428 1429 dmu_tx_commit(tx); 1430 1431 return (0); 1432 } 1433 1434 static int 1435 ztest_replay_remove(ztest_ds_t *zd, lr_remove_t *lr, boolean_t byteswap) 1436 { 1437 char *name = (void *)(lr + 1); /* name follows lr */ 1438 objset_t *os = zd->zd_os; 1439 dmu_object_info_t doi; 1440 dmu_tx_t *tx; 1441 uint64_t object, txg; 1442 1443 if (byteswap) 1444 byteswap_uint64_array(lr, sizeof (*lr)); 1445 1446 ASSERT(lr->lr_doid == ZTEST_DIROBJ); 1447 ASSERT(name[0] != '\0'); 1448 1449 VERIFY3U(0, ==, 1450 zap_lookup(os, lr->lr_doid, name, sizeof (object), 1, &object)); 1451 ASSERT(object != 0); 1452 1453 ztest_object_lock(zd, object, RL_WRITER); 1454 1455 VERIFY3U(0, ==, dmu_object_info(os, object, &doi)); 1456 1457 tx = dmu_tx_create(os); 1458 1459 dmu_tx_hold_zap(tx, lr->lr_doid, B_FALSE, name); 1460 dmu_tx_hold_free(tx, object, 0, DMU_OBJECT_END); 1461 1462 txg = ztest_tx_assign(tx, TXG_WAIT, FTAG); 1463 if (txg == 0) { 1464 ztest_object_unlock(zd, object); 1465 return (ENOSPC); 1466 } 1467 1468 if (doi.doi_type == DMU_OT_ZAP_OTHER) { 1469 VERIFY3U(0, ==, zap_destroy(os, object, tx)); 1470 } else { 1471 VERIFY3U(0, ==, dmu_object_free(os, object, tx)); 1472 } 1473 1474 VERIFY3U(0, ==, zap_remove(os, lr->lr_doid, name, tx)); 1475 1476 (void) ztest_log_remove(zd, tx, lr, object); 1477 1478 dmu_tx_commit(tx); 1479 1480 ztest_object_unlock(zd, object); 1481 1482 return (0); 1483 } 1484 1485 static int 1486 ztest_replay_write(ztest_ds_t *zd, lr_write_t *lr, boolean_t byteswap) 1487 { 1488 objset_t *os = zd->zd_os; 1489 void *data = lr + 1; /* data follows lr */ 1490 uint64_t offset, length; 1491 ztest_block_tag_t *bt = data; 1492 ztest_block_tag_t *bbt; 1493 uint64_t gen, txg, lrtxg, crtxg; 1494 dmu_object_info_t doi; 1495 dmu_tx_t *tx; 1496 dmu_buf_t *db; 1497 arc_buf_t *abuf = NULL; 1498 rl_t *rl; 1499 1500 if (byteswap) 1501 byteswap_uint64_array(lr, sizeof (*lr)); 1502 1503 offset = lr->lr_offset; 1504 length = lr->lr_length; 1505 1506 /* If it's a dmu_sync() block, write the whole block */ 1507 if (lr->lr_common.lrc_reclen == sizeof (lr_write_t)) { 1508 uint64_t blocksize = BP_GET_LSIZE(&lr->lr_blkptr); 1509 if (length < blocksize) { 1510 offset -= offset % blocksize; 1511 length = blocksize; 1512 } 1513 } 1514 1515 if (bt->bt_magic == BSWAP_64(BT_MAGIC)) 1516 byteswap_uint64_array(bt, sizeof (*bt)); 1517 1518 if (bt->bt_magic != BT_MAGIC) 1519 bt = NULL; 1520 1521 ztest_object_lock(zd, lr->lr_foid, RL_READER); 1522 rl = ztest_range_lock(zd, lr->lr_foid, offset, length, RL_WRITER); 1523 1524 VERIFY3U(0, ==, dmu_bonus_hold(os, lr->lr_foid, FTAG, &db)); 1525 1526 dmu_object_info_from_db(db, &doi); 1527 1528 bbt = ztest_bt_bonus(db); 1529 ASSERT3U(bbt->bt_magic, ==, BT_MAGIC); 1530 gen = bbt->bt_gen; 1531 crtxg = bbt->bt_crtxg; 1532 lrtxg = lr->lr_common.lrc_txg; 1533 1534 tx = dmu_tx_create(os); 1535 1536 dmu_tx_hold_write(tx, lr->lr_foid, offset, length); 1537 1538 if (ztest_random(8) == 0 && length == doi.doi_data_block_size && 1539 P2PHASE(offset, length) == 0) 1540 abuf = dmu_request_arcbuf(db, length); 1541 1542 txg = ztest_tx_assign(tx, TXG_WAIT, FTAG); 1543 if (txg == 0) { 1544 if (abuf != NULL) 1545 dmu_return_arcbuf(abuf); 1546 dmu_buf_rele(db, FTAG); 1547 ztest_range_unlock(rl); 1548 ztest_object_unlock(zd, lr->lr_foid); 1549 return (ENOSPC); 1550 } 1551 1552 if (bt != NULL) { 1553 /* 1554 * Usually, verify the old data before writing new data -- 1555 * but not always, because we also want to verify correct 1556 * behavior when the data was not recently read into cache. 1557 */ 1558 ASSERT(offset % doi.doi_data_block_size == 0); 1559 if (ztest_random(4) != 0) { 1560 int prefetch = ztest_random(2) ? 1561 DMU_READ_PREFETCH : DMU_READ_NO_PREFETCH; 1562 ztest_block_tag_t rbt; 1563 1564 VERIFY(dmu_read(os, lr->lr_foid, offset, 1565 sizeof (rbt), &rbt, prefetch) == 0); 1566 if (rbt.bt_magic == BT_MAGIC) { 1567 ztest_bt_verify(&rbt, os, lr->lr_foid, 1568 offset, gen, txg, crtxg); 1569 } 1570 } 1571 1572 /* 1573 * Writes can appear to be newer than the bonus buffer because 1574 * the ztest_get_data() callback does a dmu_read() of the 1575 * open-context data, which may be different than the data 1576 * as it was when the write was generated. 1577 */ 1578 if (zd->zd_zilog->zl_replay) { 1579 ztest_bt_verify(bt, os, lr->lr_foid, offset, 1580 MAX(gen, bt->bt_gen), MAX(txg, lrtxg), 1581 bt->bt_crtxg); 1582 } 1583 1584 /* 1585 * Set the bt's gen/txg to the bonus buffer's gen/txg 1586 * so that all of the usual ASSERTs will work. 1587 */ 1588 ztest_bt_generate(bt, os, lr->lr_foid, offset, gen, txg, crtxg); 1589 } 1590 1591 if (abuf == NULL) { 1592 dmu_write(os, lr->lr_foid, offset, length, data, tx); 1593 } else { 1594 bcopy(data, abuf->b_data, length); 1595 dmu_assign_arcbuf(db, offset, abuf, tx); 1596 } 1597 1598 (void) ztest_log_write(zd, tx, lr); 1599 1600 dmu_buf_rele(db, FTAG); 1601 1602 dmu_tx_commit(tx); 1603 1604 ztest_range_unlock(rl); 1605 ztest_object_unlock(zd, lr->lr_foid); 1606 1607 return (0); 1608 } 1609 1610 static int 1611 ztest_replay_truncate(ztest_ds_t *zd, lr_truncate_t *lr, boolean_t byteswap) 1612 { 1613 objset_t *os = zd->zd_os; 1614 dmu_tx_t *tx; 1615 uint64_t txg; 1616 rl_t *rl; 1617 1618 if (byteswap) 1619 byteswap_uint64_array(lr, sizeof (*lr)); 1620 1621 ztest_object_lock(zd, lr->lr_foid, RL_READER); 1622 rl = ztest_range_lock(zd, lr->lr_foid, lr->lr_offset, lr->lr_length, 1623 RL_WRITER); 1624 1625 tx = dmu_tx_create(os); 1626 1627 dmu_tx_hold_free(tx, lr->lr_foid, lr->lr_offset, lr->lr_length); 1628 1629 txg = ztest_tx_assign(tx, TXG_WAIT, FTAG); 1630 if (txg == 0) { 1631 ztest_range_unlock(rl); 1632 ztest_object_unlock(zd, lr->lr_foid); 1633 return (ENOSPC); 1634 } 1635 1636 VERIFY(dmu_free_range(os, lr->lr_foid, lr->lr_offset, 1637 lr->lr_length, tx) == 0); 1638 1639 (void) ztest_log_truncate(zd, tx, lr); 1640 1641 dmu_tx_commit(tx); 1642 1643 ztest_range_unlock(rl); 1644 ztest_object_unlock(zd, lr->lr_foid); 1645 1646 return (0); 1647 } 1648 1649 static int 1650 ztest_replay_setattr(ztest_ds_t *zd, lr_setattr_t *lr, boolean_t byteswap) 1651 { 1652 objset_t *os = zd->zd_os; 1653 dmu_tx_t *tx; 1654 dmu_buf_t *db; 1655 ztest_block_tag_t *bbt; 1656 uint64_t txg, lrtxg, crtxg; 1657 1658 if (byteswap) 1659 byteswap_uint64_array(lr, sizeof (*lr)); 1660 1661 ztest_object_lock(zd, lr->lr_foid, RL_WRITER); 1662 1663 VERIFY3U(0, ==, dmu_bonus_hold(os, lr->lr_foid, FTAG, &db)); 1664 1665 tx = dmu_tx_create(os); 1666 dmu_tx_hold_bonus(tx, lr->lr_foid); 1667 1668 txg = ztest_tx_assign(tx, TXG_WAIT, FTAG); 1669 if (txg == 0) { 1670 dmu_buf_rele(db, FTAG); 1671 ztest_object_unlock(zd, lr->lr_foid); 1672 return (ENOSPC); 1673 } 1674 1675 bbt = ztest_bt_bonus(db); 1676 ASSERT3U(bbt->bt_magic, ==, BT_MAGIC); 1677 crtxg = bbt->bt_crtxg; 1678 lrtxg = lr->lr_common.lrc_txg; 1679 1680 if (zd->zd_zilog->zl_replay) { 1681 ASSERT(lr->lr_size != 0); 1682 ASSERT(lr->lr_mode != 0); 1683 ASSERT(lrtxg != 0); 1684 } else { 1685 /* 1686 * Randomly change the size and increment the generation. 1687 */ 1688 lr->lr_size = (ztest_random(db->db_size / sizeof (*bbt)) + 1) * 1689 sizeof (*bbt); 1690 lr->lr_mode = bbt->bt_gen + 1; 1691 ASSERT(lrtxg == 0); 1692 } 1693 1694 /* 1695 * Verify that the current bonus buffer is not newer than our txg. 1696 */ 1697 ztest_bt_verify(bbt, os, lr->lr_foid, -1ULL, lr->lr_mode, 1698 MAX(txg, lrtxg), crtxg); 1699 1700 dmu_buf_will_dirty(db, tx); 1701 1702 ASSERT3U(lr->lr_size, >=, sizeof (*bbt)); 1703 ASSERT3U(lr->lr_size, <=, db->db_size); 1704 VERIFY3U(dmu_set_bonus(db, lr->lr_size, tx), ==, 0); 1705 bbt = ztest_bt_bonus(db); 1706 1707 ztest_bt_generate(bbt, os, lr->lr_foid, -1ULL, lr->lr_mode, txg, crtxg); 1708 1709 dmu_buf_rele(db, FTAG); 1710 1711 (void) ztest_log_setattr(zd, tx, lr); 1712 1713 dmu_tx_commit(tx); 1714 1715 ztest_object_unlock(zd, lr->lr_foid); 1716 1717 return (0); 1718 } 1719 1720 zil_replay_func_t *ztest_replay_vector[TX_MAX_TYPE] = { 1721 NULL, /* 0 no such transaction type */ 1722 ztest_replay_create, /* TX_CREATE */ 1723 NULL, /* TX_MKDIR */ 1724 NULL, /* TX_MKXATTR */ 1725 NULL, /* TX_SYMLINK */ 1726 ztest_replay_remove, /* TX_REMOVE */ 1727 NULL, /* TX_RMDIR */ 1728 NULL, /* TX_LINK */ 1729 NULL, /* TX_RENAME */ 1730 ztest_replay_write, /* TX_WRITE */ 1731 ztest_replay_truncate, /* TX_TRUNCATE */ 1732 ztest_replay_setattr, /* TX_SETATTR */ 1733 NULL, /* TX_ACL */ 1734 NULL, /* TX_CREATE_ACL */ 1735 NULL, /* TX_CREATE_ATTR */ 1736 NULL, /* TX_CREATE_ACL_ATTR */ 1737 NULL, /* TX_MKDIR_ACL */ 1738 NULL, /* TX_MKDIR_ATTR */ 1739 NULL, /* TX_MKDIR_ACL_ATTR */ 1740 NULL, /* TX_WRITE2 */ 1741 }; 1742 1743 /* 1744 * ZIL get_data callbacks 1745 */ 1746 1747 static void 1748 ztest_get_done(zgd_t *zgd, int error) 1749 { 1750 ztest_ds_t *zd = zgd->zgd_private; 1751 uint64_t object = zgd->zgd_rl->rl_object; 1752 1753 if (zgd->zgd_db) 1754 dmu_buf_rele(zgd->zgd_db, zgd); 1755 1756 ztest_range_unlock(zgd->zgd_rl); 1757 ztest_object_unlock(zd, object); 1758 1759 if (error == 0 && zgd->zgd_bp) 1760 zil_add_block(zgd->zgd_zilog, zgd->zgd_bp); 1761 1762 umem_free(zgd, sizeof (*zgd)); 1763 } 1764 1765 static int 1766 ztest_get_data(void *arg, lr_write_t *lr, char *buf, zio_t *zio) 1767 { 1768 ztest_ds_t *zd = arg; 1769 objset_t *os = zd->zd_os; 1770 uint64_t object = lr->lr_foid; 1771 uint64_t offset = lr->lr_offset; 1772 uint64_t size = lr->lr_length; 1773 blkptr_t *bp = &lr->lr_blkptr; 1774 uint64_t txg = lr->lr_common.lrc_txg; 1775 uint64_t crtxg; 1776 dmu_object_info_t doi; 1777 dmu_buf_t *db; 1778 zgd_t *zgd; 1779 int error; 1780 1781 ztest_object_lock(zd, object, RL_READER); 1782 error = dmu_bonus_hold(os, object, FTAG, &db); 1783 if (error) { 1784 ztest_object_unlock(zd, object); 1785 return (error); 1786 } 1787 1788 crtxg = ztest_bt_bonus(db)->bt_crtxg; 1789 1790 if (crtxg == 0 || crtxg > txg) { 1791 dmu_buf_rele(db, FTAG); 1792 ztest_object_unlock(zd, object); 1793 return (ENOENT); 1794 } 1795 1796 dmu_object_info_from_db(db, &doi); 1797 dmu_buf_rele(db, FTAG); 1798 db = NULL; 1799 1800 zgd = umem_zalloc(sizeof (*zgd), UMEM_NOFAIL); 1801 zgd->zgd_zilog = zd->zd_zilog; 1802 zgd->zgd_private = zd; 1803 1804 if (buf != NULL) { /* immediate write */ 1805 zgd->zgd_rl = ztest_range_lock(zd, object, offset, size, 1806 RL_READER); 1807 1808 error = dmu_read(os, object, offset, size, buf, 1809 DMU_READ_NO_PREFETCH); 1810 ASSERT(error == 0); 1811 } else { 1812 size = doi.doi_data_block_size; 1813 if (ISP2(size)) { 1814 offset = P2ALIGN(offset, size); 1815 } else { 1816 ASSERT(offset < size); 1817 offset = 0; 1818 } 1819 1820 zgd->zgd_rl = ztest_range_lock(zd, object, offset, size, 1821 RL_READER); 1822 1823 error = dmu_buf_hold(os, object, offset, zgd, &db, 1824 DMU_READ_NO_PREFETCH); 1825 1826 if (error == 0) { 1827 zgd->zgd_db = db; 1828 zgd->zgd_bp = bp; 1829 1830 ASSERT(db->db_offset == offset); 1831 ASSERT(db->db_size == size); 1832 1833 error = dmu_sync(zio, lr->lr_common.lrc_txg, 1834 ztest_get_done, zgd); 1835 1836 if (error == 0) 1837 return (0); 1838 } 1839 } 1840 1841 ztest_get_done(zgd, error); 1842 1843 return (error); 1844 } 1845 1846 static void * 1847 ztest_lr_alloc(size_t lrsize, char *name) 1848 { 1849 char *lr; 1850 size_t namesize = name ? strlen(name) + 1 : 0; 1851 1852 lr = umem_zalloc(lrsize + namesize, UMEM_NOFAIL); 1853 1854 if (name) 1855 bcopy(name, lr + lrsize, namesize); 1856 1857 return (lr); 1858 } 1859 1860 void 1861 ztest_lr_free(void *lr, size_t lrsize, char *name) 1862 { 1863 size_t namesize = name ? strlen(name) + 1 : 0; 1864 1865 umem_free(lr, lrsize + namesize); 1866 } 1867 1868 /* 1869 * Lookup a bunch of objects. Returns the number of objects not found. 1870 */ 1871 static int 1872 ztest_lookup(ztest_ds_t *zd, ztest_od_t *od, int count) 1873 { 1874 int missing = 0; 1875 int error; 1876 1877 ASSERT(_mutex_held(&zd->zd_dirobj_lock)); 1878 1879 for (int i = 0; i < count; i++, od++) { 1880 od->od_object = 0; 1881 error = zap_lookup(zd->zd_os, od->od_dir, od->od_name, 1882 sizeof (uint64_t), 1, &od->od_object); 1883 if (error) { 1884 ASSERT(error == ENOENT); 1885 ASSERT(od->od_object == 0); 1886 missing++; 1887 } else { 1888 dmu_buf_t *db; 1889 ztest_block_tag_t *bbt; 1890 dmu_object_info_t doi; 1891 1892 ASSERT(od->od_object != 0); 1893 ASSERT(missing == 0); /* there should be no gaps */ 1894 1895 ztest_object_lock(zd, od->od_object, RL_READER); 1896 VERIFY3U(0, ==, dmu_bonus_hold(zd->zd_os, 1897 od->od_object, FTAG, &db)); 1898 dmu_object_info_from_db(db, &doi); 1899 bbt = ztest_bt_bonus(db); 1900 ASSERT3U(bbt->bt_magic, ==, BT_MAGIC); 1901 od->od_type = doi.doi_type; 1902 od->od_blocksize = doi.doi_data_block_size; 1903 od->od_gen = bbt->bt_gen; 1904 dmu_buf_rele(db, FTAG); 1905 ztest_object_unlock(zd, od->od_object); 1906 } 1907 } 1908 1909 return (missing); 1910 } 1911 1912 static int 1913 ztest_create(ztest_ds_t *zd, ztest_od_t *od, int count) 1914 { 1915 int missing = 0; 1916 1917 ASSERT(_mutex_held(&zd->zd_dirobj_lock)); 1918 1919 for (int i = 0; i < count; i++, od++) { 1920 if (missing) { 1921 od->od_object = 0; 1922 missing++; 1923 continue; 1924 } 1925 1926 lr_create_t *lr = ztest_lr_alloc(sizeof (*lr), od->od_name); 1927 1928 lr->lr_doid = od->od_dir; 1929 lr->lr_foid = 0; /* 0 to allocate, > 0 to claim */ 1930 lr->lrz_type = od->od_crtype; 1931 lr->lrz_blocksize = od->od_crblocksize; 1932 lr->lrz_ibshift = ztest_random_ibshift(); 1933 lr->lrz_bonustype = DMU_OT_UINT64_OTHER; 1934 lr->lrz_bonuslen = dmu_bonus_max(); 1935 lr->lr_gen = od->od_crgen; 1936 lr->lr_crtime[0] = time(NULL); 1937 1938 if (ztest_replay_create(zd, lr, B_FALSE) != 0) { 1939 ASSERT(missing == 0); 1940 od->od_object = 0; 1941 missing++; 1942 } else { 1943 od->od_object = lr->lr_foid; 1944 od->od_type = od->od_crtype; 1945 od->od_blocksize = od->od_crblocksize; 1946 od->od_gen = od->od_crgen; 1947 ASSERT(od->od_object != 0); 1948 } 1949 1950 ztest_lr_free(lr, sizeof (*lr), od->od_name); 1951 } 1952 1953 return (missing); 1954 } 1955 1956 static int 1957 ztest_remove(ztest_ds_t *zd, ztest_od_t *od, int count) 1958 { 1959 int missing = 0; 1960 int error; 1961 1962 ASSERT(_mutex_held(&zd->zd_dirobj_lock)); 1963 1964 od += count - 1; 1965 1966 for (int i = count - 1; i >= 0; i--, od--) { 1967 if (missing) { 1968 missing++; 1969 continue; 1970 } 1971 1972 if (od->od_object == 0) 1973 continue; 1974 1975 lr_remove_t *lr = ztest_lr_alloc(sizeof (*lr), od->od_name); 1976 1977 lr->lr_doid = od->od_dir; 1978 1979 if ((error = ztest_replay_remove(zd, lr, B_FALSE)) != 0) { 1980 ASSERT3U(error, ==, ENOSPC); 1981 missing++; 1982 } else { 1983 od->od_object = 0; 1984 } 1985 ztest_lr_free(lr, sizeof (*lr), od->od_name); 1986 } 1987 1988 return (missing); 1989 } 1990 1991 static int 1992 ztest_write(ztest_ds_t *zd, uint64_t object, uint64_t offset, uint64_t size, 1993 void *data) 1994 { 1995 lr_write_t *lr; 1996 int error; 1997 1998 lr = ztest_lr_alloc(sizeof (*lr) + size, NULL); 1999 2000 lr->lr_foid = object; 2001 lr->lr_offset = offset; 2002 lr->lr_length = size; 2003 lr->lr_blkoff = 0; 2004 BP_ZERO(&lr->lr_blkptr); 2005 2006 bcopy(data, lr + 1, size); 2007 2008 error = ztest_replay_write(zd, lr, B_FALSE); 2009 2010 ztest_lr_free(lr, sizeof (*lr) + size, NULL); 2011 2012 return (error); 2013 } 2014 2015 static int 2016 ztest_truncate(ztest_ds_t *zd, uint64_t object, uint64_t offset, uint64_t size) 2017 { 2018 lr_truncate_t *lr; 2019 int error; 2020 2021 lr = ztest_lr_alloc(sizeof (*lr), NULL); 2022 2023 lr->lr_foid = object; 2024 lr->lr_offset = offset; 2025 lr->lr_length = size; 2026 2027 error = ztest_replay_truncate(zd, lr, B_FALSE); 2028 2029 ztest_lr_free(lr, sizeof (*lr), NULL); 2030 2031 return (error); 2032 } 2033 2034 static int 2035 ztest_setattr(ztest_ds_t *zd, uint64_t object) 2036 { 2037 lr_setattr_t *lr; 2038 int error; 2039 2040 lr = ztest_lr_alloc(sizeof (*lr), NULL); 2041 2042 lr->lr_foid = object; 2043 lr->lr_size = 0; 2044 lr->lr_mode = 0; 2045 2046 error = ztest_replay_setattr(zd, lr, B_FALSE); 2047 2048 ztest_lr_free(lr, sizeof (*lr), NULL); 2049 2050 return (error); 2051 } 2052 2053 static void 2054 ztest_prealloc(ztest_ds_t *zd, uint64_t object, uint64_t offset, uint64_t size) 2055 { 2056 objset_t *os = zd->zd_os; 2057 dmu_tx_t *tx; 2058 uint64_t txg; 2059 rl_t *rl; 2060 2061 txg_wait_synced(dmu_objset_pool(os), 0); 2062 2063 ztest_object_lock(zd, object, RL_READER); 2064 rl = ztest_range_lock(zd, object, offset, size, RL_WRITER); 2065 2066 tx = dmu_tx_create(os); 2067 2068 dmu_tx_hold_write(tx, object, offset, size); 2069 2070 txg = ztest_tx_assign(tx, TXG_WAIT, FTAG); 2071 2072 if (txg != 0) { 2073 dmu_prealloc(os, object, offset, size, tx); 2074 dmu_tx_commit(tx); 2075 txg_wait_synced(dmu_objset_pool(os), txg); 2076 } else { 2077 (void) dmu_free_long_range(os, object, offset, size); 2078 } 2079 2080 ztest_range_unlock(rl); 2081 ztest_object_unlock(zd, object); 2082 } 2083 2084 static void 2085 ztest_io(ztest_ds_t *zd, uint64_t object, uint64_t offset) 2086 { 2087 ztest_block_tag_t wbt; 2088 dmu_object_info_t doi; 2089 enum ztest_io_type io_type; 2090 uint64_t blocksize; 2091 void *data; 2092 2093 VERIFY(dmu_object_info(zd->zd_os, object, &doi) == 0); 2094 blocksize = doi.doi_data_block_size; 2095 data = umem_alloc(blocksize, UMEM_NOFAIL); 2096 2097 /* 2098 * Pick an i/o type at random, biased toward writing block tags. 2099 */ 2100 io_type = ztest_random(ZTEST_IO_TYPES); 2101 if (ztest_random(2) == 0) 2102 io_type = ZTEST_IO_WRITE_TAG; 2103 2104 (void) rw_rdlock(&zd->zd_zilog_lock); 2105 2106 switch (io_type) { 2107 2108 case ZTEST_IO_WRITE_TAG: 2109 ztest_bt_generate(&wbt, zd->zd_os, object, offset, 0, 0, 0); 2110 (void) ztest_write(zd, object, offset, sizeof (wbt), &wbt); 2111 break; 2112 2113 case ZTEST_IO_WRITE_PATTERN: 2114 (void) memset(data, 'a' + (object + offset) % 5, blocksize); 2115 if (ztest_random(2) == 0) { 2116 /* 2117 * Induce fletcher2 collisions to ensure that 2118 * zio_ddt_collision() detects and resolves them 2119 * when using fletcher2-verify for deduplication. 2120 */ 2121 ((uint64_t *)data)[0] ^= 1ULL << 63; 2122 ((uint64_t *)data)[4] ^= 1ULL << 63; 2123 } 2124 (void) ztest_write(zd, object, offset, blocksize, data); 2125 break; 2126 2127 case ZTEST_IO_WRITE_ZEROES: 2128 bzero(data, blocksize); 2129 (void) ztest_write(zd, object, offset, blocksize, data); 2130 break; 2131 2132 case ZTEST_IO_TRUNCATE: 2133 (void) ztest_truncate(zd, object, offset, blocksize); 2134 break; 2135 2136 case ZTEST_IO_SETATTR: 2137 (void) ztest_setattr(zd, object); 2138 break; 2139 } 2140 2141 (void) rw_unlock(&zd->zd_zilog_lock); 2142 2143 umem_free(data, blocksize); 2144 } 2145 2146 /* 2147 * Initialize an object description template. 2148 */ 2149 static void 2150 ztest_od_init(ztest_od_t *od, uint64_t id, char *tag, uint64_t index, 2151 dmu_object_type_t type, uint64_t blocksize, uint64_t gen) 2152 { 2153 od->od_dir = ZTEST_DIROBJ; 2154 od->od_object = 0; 2155 2156 od->od_crtype = type; 2157 od->od_crblocksize = blocksize ? blocksize : ztest_random_blocksize(); 2158 od->od_crgen = gen; 2159 2160 od->od_type = DMU_OT_NONE; 2161 od->od_blocksize = 0; 2162 od->od_gen = 0; 2163 2164 (void) snprintf(od->od_name, sizeof (od->od_name), "%s(%lld)[%llu]", 2165 tag, (int64_t)id, index); 2166 } 2167 2168 /* 2169 * Lookup or create the objects for a test using the od template. 2170 * If the objects do not all exist, or if 'remove' is specified, 2171 * remove any existing objects and create new ones. Otherwise, 2172 * use the existing objects. 2173 */ 2174 static int 2175 ztest_object_init(ztest_ds_t *zd, ztest_od_t *od, size_t size, boolean_t remove) 2176 { 2177 int count = size / sizeof (*od); 2178 int rv = 0; 2179 2180 VERIFY(mutex_lock(&zd->zd_dirobj_lock) == 0); 2181 if ((ztest_lookup(zd, od, count) != 0 || remove) && 2182 (ztest_remove(zd, od, count) != 0 || 2183 ztest_create(zd, od, count) != 0)) 2184 rv = -1; 2185 zd->zd_od = od; 2186 VERIFY(mutex_unlock(&zd->zd_dirobj_lock) == 0); 2187 2188 return (rv); 2189 } 2190 2191 /* ARGSUSED */ 2192 void 2193 ztest_zil_commit(ztest_ds_t *zd, uint64_t id) 2194 { 2195 zilog_t *zilog = zd->zd_zilog; 2196 2197 (void) rw_rdlock(&zd->zd_zilog_lock); 2198 2199 zil_commit(zilog, ztest_random(ZTEST_OBJECTS)); 2200 2201 /* 2202 * Remember the committed values in zd, which is in parent/child 2203 * shared memory. If we die, the next iteration of ztest_run() 2204 * will verify that the log really does contain this record. 2205 */ 2206 mutex_enter(&zilog->zl_lock); 2207 ASSERT(zd->zd_shared != NULL); 2208 ASSERT3U(zd->zd_shared->zd_seq, <=, zilog->zl_commit_lr_seq); 2209 zd->zd_shared->zd_seq = zilog->zl_commit_lr_seq; 2210 mutex_exit(&zilog->zl_lock); 2211 2212 (void) rw_unlock(&zd->zd_zilog_lock); 2213 } 2214 2215 /* 2216 * This function is designed to simulate the operations that occur during a 2217 * mount/unmount operation. We hold the dataset across these operations in an 2218 * attempt to expose any implicit assumptions about ZIL management. 2219 */ 2220 /* ARGSUSED */ 2221 void 2222 ztest_zil_remount(ztest_ds_t *zd, uint64_t id) 2223 { 2224 objset_t *os = zd->zd_os; 2225 2226 (void) rw_wrlock(&zd->zd_zilog_lock); 2227 2228 /* zfsvfs_teardown() */ 2229 zil_close(zd->zd_zilog); 2230 2231 /* zfsvfs_setup() */ 2232 VERIFY(zil_open(os, ztest_get_data) == zd->zd_zilog); 2233 zil_replay(os, zd, ztest_replay_vector); 2234 2235 (void) rw_unlock(&zd->zd_zilog_lock); 2236 } 2237 2238 /* 2239 * Verify that we can't destroy an active pool, create an existing pool, 2240 * or create a pool with a bad vdev spec. 2241 */ 2242 /* ARGSUSED */ 2243 void 2244 ztest_spa_create_destroy(ztest_ds_t *zd, uint64_t id) 2245 { 2246 ztest_shared_opts_t *zo = &ztest_opts; 2247 spa_t *spa; 2248 nvlist_t *nvroot; 2249 2250 /* 2251 * Attempt to create using a bad file. 2252 */ 2253 nvroot = make_vdev_root("/dev/bogus", NULL, 0, 0, 0, 0, 0, 1); 2254 VERIFY3U(ENOENT, ==, 2255 spa_create("ztest_bad_file", nvroot, NULL, NULL, NULL)); 2256 nvlist_free(nvroot); 2257 2258 /* 2259 * Attempt to create using a bad mirror. 2260 */ 2261 nvroot = make_vdev_root("/dev/bogus", NULL, 0, 0, 0, 0, 2, 1); 2262 VERIFY3U(ENOENT, ==, 2263 spa_create("ztest_bad_mirror", nvroot, NULL, NULL, NULL)); 2264 nvlist_free(nvroot); 2265 2266 /* 2267 * Attempt to create an existing pool. It shouldn't matter 2268 * what's in the nvroot; we should fail with EEXIST. 2269 */ 2270 (void) rw_rdlock(&ztest_name_lock); 2271 nvroot = make_vdev_root("/dev/bogus", NULL, 0, 0, 0, 0, 0, 1); 2272 VERIFY3U(EEXIST, ==, spa_create(zo->zo_pool, nvroot, NULL, NULL, NULL)); 2273 nvlist_free(nvroot); 2274 VERIFY3U(0, ==, spa_open(zo->zo_pool, &spa, FTAG)); 2275 VERIFY3U(EBUSY, ==, spa_destroy(zo->zo_pool)); 2276 spa_close(spa, FTAG); 2277 2278 (void) rw_unlock(&ztest_name_lock); 2279 } 2280 2281 static vdev_t * 2282 vdev_lookup_by_path(vdev_t *vd, const char *path) 2283 { 2284 vdev_t *mvd; 2285 2286 if (vd->vdev_path != NULL && strcmp(path, vd->vdev_path) == 0) 2287 return (vd); 2288 2289 for (int c = 0; c < vd->vdev_children; c++) 2290 if ((mvd = vdev_lookup_by_path(vd->vdev_child[c], path)) != 2291 NULL) 2292 return (mvd); 2293 2294 return (NULL); 2295 } 2296 2297 /* 2298 * Find the first available hole which can be used as a top-level. 2299 */ 2300 int 2301 find_vdev_hole(spa_t *spa) 2302 { 2303 vdev_t *rvd = spa->spa_root_vdev; 2304 int c; 2305 2306 ASSERT(spa_config_held(spa, SCL_VDEV, RW_READER) == SCL_VDEV); 2307 2308 for (c = 0; c < rvd->vdev_children; c++) { 2309 vdev_t *cvd = rvd->vdev_child[c]; 2310 2311 if (cvd->vdev_ishole) 2312 break; 2313 } 2314 return (c); 2315 } 2316 2317 /* 2318 * Verify that vdev_add() works as expected. 2319 */ 2320 /* ARGSUSED */ 2321 void 2322 ztest_vdev_add_remove(ztest_ds_t *zd, uint64_t id) 2323 { 2324 ztest_shared_t *zs = ztest_shared; 2325 spa_t *spa = ztest_spa; 2326 uint64_t leaves; 2327 uint64_t guid; 2328 nvlist_t *nvroot; 2329 int error; 2330 2331 VERIFY(mutex_lock(&ztest_vdev_lock) == 0); 2332 leaves = 2333 MAX(zs->zs_mirrors + zs->zs_splits, 1) * ztest_opts.zo_raidz; 2334 2335 spa_config_enter(spa, SCL_VDEV, FTAG, RW_READER); 2336 2337 ztest_shared->zs_vdev_next_leaf = find_vdev_hole(spa) * leaves; 2338 2339 /* 2340 * If we have slogs then remove them 1/4 of the time. 2341 */ 2342 if (spa_has_slogs(spa) && ztest_random(4) == 0) { 2343 /* 2344 * Grab the guid from the head of the log class rotor. 2345 */ 2346 guid = spa_log_class(spa)->mc_rotor->mg_vd->vdev_guid; 2347 2348 spa_config_exit(spa, SCL_VDEV, FTAG); 2349 2350 /* 2351 * We have to grab the zs_name_lock as writer to 2352 * prevent a race between removing a slog (dmu_objset_find) 2353 * and destroying a dataset. Removing the slog will 2354 * grab a reference on the dataset which may cause 2355 * dmu_objset_destroy() to fail with EBUSY thus 2356 * leaving the dataset in an inconsistent state. 2357 */ 2358 VERIFY(rw_wrlock(&ztest_name_lock) == 0); 2359 error = spa_vdev_remove(spa, guid, B_FALSE); 2360 VERIFY(rw_unlock(&ztest_name_lock) == 0); 2361 2362 if (error && error != EEXIST) 2363 fatal(0, "spa_vdev_remove() = %d", error); 2364 } else { 2365 spa_config_exit(spa, SCL_VDEV, FTAG); 2366 2367 /* 2368 * Make 1/4 of the devices be log devices. 2369 */ 2370 nvroot = make_vdev_root(NULL, NULL, 2371 ztest_opts.zo_vdev_size, 0, 2372 ztest_random(4) == 0, ztest_opts.zo_raidz, 2373 zs->zs_mirrors, 1); 2374 2375 error = spa_vdev_add(spa, nvroot); 2376 nvlist_free(nvroot); 2377 2378 if (error == ENOSPC) 2379 ztest_record_enospc("spa_vdev_add"); 2380 else if (error != 0) 2381 fatal(0, "spa_vdev_add() = %d", error); 2382 } 2383 2384 VERIFY(mutex_unlock(&ztest_vdev_lock) == 0); 2385 } 2386 2387 /* 2388 * Verify that adding/removing aux devices (l2arc, hot spare) works as expected. 2389 */ 2390 /* ARGSUSED */ 2391 void 2392 ztest_vdev_aux_add_remove(ztest_ds_t *zd, uint64_t id) 2393 { 2394 ztest_shared_t *zs = ztest_shared; 2395 spa_t *spa = ztest_spa; 2396 vdev_t *rvd = spa->spa_root_vdev; 2397 spa_aux_vdev_t *sav; 2398 char *aux; 2399 uint64_t guid = 0; 2400 int error; 2401 2402 if (ztest_random(2) == 0) { 2403 sav = &spa->spa_spares; 2404 aux = ZPOOL_CONFIG_SPARES; 2405 } else { 2406 sav = &spa->spa_l2cache; 2407 aux = ZPOOL_CONFIG_L2CACHE; 2408 } 2409 2410 VERIFY(mutex_lock(&ztest_vdev_lock) == 0); 2411 2412 spa_config_enter(spa, SCL_VDEV, FTAG, RW_READER); 2413 2414 if (sav->sav_count != 0 && ztest_random(4) == 0) { 2415 /* 2416 * Pick a random device to remove. 2417 */ 2418 guid = sav->sav_vdevs[ztest_random(sav->sav_count)]->vdev_guid; 2419 } else { 2420 /* 2421 * Find an unused device we can add. 2422 */ 2423 zs->zs_vdev_aux = 0; 2424 for (;;) { 2425 char path[MAXPATHLEN]; 2426 int c; 2427 (void) snprintf(path, sizeof (path), ztest_aux_template, 2428 ztest_opts.zo_dir, ztest_opts.zo_pool, aux, 2429 zs->zs_vdev_aux); 2430 for (c = 0; c < sav->sav_count; c++) 2431 if (strcmp(sav->sav_vdevs[c]->vdev_path, 2432 path) == 0) 2433 break; 2434 if (c == sav->sav_count && 2435 vdev_lookup_by_path(rvd, path) == NULL) 2436 break; 2437 zs->zs_vdev_aux++; 2438 } 2439 } 2440 2441 spa_config_exit(spa, SCL_VDEV, FTAG); 2442 2443 if (guid == 0) { 2444 /* 2445 * Add a new device. 2446 */ 2447 nvlist_t *nvroot = make_vdev_root(NULL, aux, 2448 (ztest_opts.zo_vdev_size * 5) / 4, 0, 0, 0, 0, 1); 2449 error = spa_vdev_add(spa, nvroot); 2450 if (error != 0) 2451 fatal(0, "spa_vdev_add(%p) = %d", nvroot, error); 2452 nvlist_free(nvroot); 2453 } else { 2454 /* 2455 * Remove an existing device. Sometimes, dirty its 2456 * vdev state first to make sure we handle removal 2457 * of devices that have pending state changes. 2458 */ 2459 if (ztest_random(2) == 0) 2460 (void) vdev_online(spa, guid, 0, NULL); 2461 2462 error = spa_vdev_remove(spa, guid, B_FALSE); 2463 if (error != 0 && error != EBUSY) 2464 fatal(0, "spa_vdev_remove(%llu) = %d", guid, error); 2465 } 2466 2467 VERIFY(mutex_unlock(&ztest_vdev_lock) == 0); 2468 } 2469 2470 /* 2471 * split a pool if it has mirror tlvdevs 2472 */ 2473 /* ARGSUSED */ 2474 void 2475 ztest_split_pool(ztest_ds_t *zd, uint64_t id) 2476 { 2477 ztest_shared_t *zs = ztest_shared; 2478 spa_t *spa = ztest_spa; 2479 vdev_t *rvd = spa->spa_root_vdev; 2480 nvlist_t *tree, **child, *config, *split, **schild; 2481 uint_t c, children, schildren = 0, lastlogid = 0; 2482 int error = 0; 2483 2484 VERIFY(mutex_lock(&ztest_vdev_lock) == 0); 2485 2486 /* ensure we have a useable config; mirrors of raidz aren't supported */ 2487 if (zs->zs_mirrors < 3 || ztest_opts.zo_raidz > 1) { 2488 VERIFY(mutex_unlock(&ztest_vdev_lock) == 0); 2489 return; 2490 } 2491 2492 /* clean up the old pool, if any */ 2493 (void) spa_destroy("splitp"); 2494 2495 spa_config_enter(spa, SCL_VDEV, FTAG, RW_READER); 2496 2497 /* generate a config from the existing config */ 2498 mutex_enter(&spa->spa_props_lock); 2499 VERIFY(nvlist_lookup_nvlist(spa->spa_config, ZPOOL_CONFIG_VDEV_TREE, 2500 &tree) == 0); 2501 mutex_exit(&spa->spa_props_lock); 2502 2503 VERIFY(nvlist_lookup_nvlist_array(tree, ZPOOL_CONFIG_CHILDREN, &child, 2504 &children) == 0); 2505 2506 schild = malloc(rvd->vdev_children * sizeof (nvlist_t *)); 2507 for (c = 0; c < children; c++) { 2508 vdev_t *tvd = rvd->vdev_child[c]; 2509 nvlist_t **mchild; 2510 uint_t mchildren; 2511 2512 if (tvd->vdev_islog || tvd->vdev_ops == &vdev_hole_ops) { 2513 VERIFY(nvlist_alloc(&schild[schildren], NV_UNIQUE_NAME, 2514 0) == 0); 2515 VERIFY(nvlist_add_string(schild[schildren], 2516 ZPOOL_CONFIG_TYPE, VDEV_TYPE_HOLE) == 0); 2517 VERIFY(nvlist_add_uint64(schild[schildren], 2518 ZPOOL_CONFIG_IS_HOLE, 1) == 0); 2519 if (lastlogid == 0) 2520 lastlogid = schildren; 2521 ++schildren; 2522 continue; 2523 } 2524 lastlogid = 0; 2525 VERIFY(nvlist_lookup_nvlist_array(child[c], 2526 ZPOOL_CONFIG_CHILDREN, &mchild, &mchildren) == 0); 2527 VERIFY(nvlist_dup(mchild[0], &schild[schildren++], 0) == 0); 2528 } 2529 2530 /* OK, create a config that can be used to split */ 2531 VERIFY(nvlist_alloc(&split, NV_UNIQUE_NAME, 0) == 0); 2532 VERIFY(nvlist_add_string(split, ZPOOL_CONFIG_TYPE, 2533 VDEV_TYPE_ROOT) == 0); 2534 VERIFY(nvlist_add_nvlist_array(split, ZPOOL_CONFIG_CHILDREN, schild, 2535 lastlogid != 0 ? lastlogid : schildren) == 0); 2536 2537 VERIFY(nvlist_alloc(&config, NV_UNIQUE_NAME, 0) == 0); 2538 VERIFY(nvlist_add_nvlist(config, ZPOOL_CONFIG_VDEV_TREE, split) == 0); 2539 2540 for (c = 0; c < schildren; c++) 2541 nvlist_free(schild[c]); 2542 free(schild); 2543 nvlist_free(split); 2544 2545 spa_config_exit(spa, SCL_VDEV, FTAG); 2546 2547 (void) rw_wrlock(&ztest_name_lock); 2548 error = spa_vdev_split_mirror(spa, "splitp", config, NULL, B_FALSE); 2549 (void) rw_unlock(&ztest_name_lock); 2550 2551 nvlist_free(config); 2552 2553 if (error == 0) { 2554 (void) printf("successful split - results:\n"); 2555 mutex_enter(&spa_namespace_lock); 2556 show_pool_stats(spa); 2557 show_pool_stats(spa_lookup("splitp")); 2558 mutex_exit(&spa_namespace_lock); 2559 ++zs->zs_splits; 2560 --zs->zs_mirrors; 2561 } 2562 VERIFY(mutex_unlock(&ztest_vdev_lock) == 0); 2563 2564 } 2565 2566 /* 2567 * Verify that we can attach and detach devices. 2568 */ 2569 /* ARGSUSED */ 2570 void 2571 ztest_vdev_attach_detach(ztest_ds_t *zd, uint64_t id) 2572 { 2573 ztest_shared_t *zs = ztest_shared; 2574 spa_t *spa = ztest_spa; 2575 spa_aux_vdev_t *sav = &spa->spa_spares; 2576 vdev_t *rvd = spa->spa_root_vdev; 2577 vdev_t *oldvd, *newvd, *pvd; 2578 nvlist_t *root; 2579 uint64_t leaves; 2580 uint64_t leaf, top; 2581 uint64_t ashift = ztest_get_ashift(); 2582 uint64_t oldguid, pguid; 2583 size_t oldsize, newsize; 2584 char oldpath[MAXPATHLEN], newpath[MAXPATHLEN]; 2585 int replacing; 2586 int oldvd_has_siblings = B_FALSE; 2587 int newvd_is_spare = B_FALSE; 2588 int oldvd_is_log; 2589 int error, expected_error; 2590 2591 VERIFY(mutex_lock(&ztest_vdev_lock) == 0); 2592 leaves = MAX(zs->zs_mirrors, 1) * ztest_opts.zo_raidz; 2593 2594 spa_config_enter(spa, SCL_VDEV, FTAG, RW_READER); 2595 2596 /* 2597 * Decide whether to do an attach or a replace. 2598 */ 2599 replacing = ztest_random(2); 2600 2601 /* 2602 * Pick a random top-level vdev. 2603 */ 2604 top = ztest_random_vdev_top(spa, B_TRUE); 2605 2606 /* 2607 * Pick a random leaf within it. 2608 */ 2609 leaf = ztest_random(leaves); 2610 2611 /* 2612 * Locate this vdev. 2613 */ 2614 oldvd = rvd->vdev_child[top]; 2615 if (zs->zs_mirrors >= 1) { 2616 ASSERT(oldvd->vdev_ops == &vdev_mirror_ops); 2617 ASSERT(oldvd->vdev_children >= zs->zs_mirrors); 2618 oldvd = oldvd->vdev_child[leaf / ztest_opts.zo_raidz]; 2619 } 2620 if (ztest_opts.zo_raidz > 1) { 2621 ASSERT(oldvd->vdev_ops == &vdev_raidz_ops); 2622 ASSERT(oldvd->vdev_children == ztest_opts.zo_raidz); 2623 oldvd = oldvd->vdev_child[leaf % ztest_opts.zo_raidz]; 2624 } 2625 2626 /* 2627 * If we're already doing an attach or replace, oldvd may be a 2628 * mirror vdev -- in which case, pick a random child. 2629 */ 2630 while (oldvd->vdev_children != 0) { 2631 oldvd_has_siblings = B_TRUE; 2632 ASSERT(oldvd->vdev_children >= 2); 2633 oldvd = oldvd->vdev_child[ztest_random(oldvd->vdev_children)]; 2634 } 2635 2636 oldguid = oldvd->vdev_guid; 2637 oldsize = vdev_get_min_asize(oldvd); 2638 oldvd_is_log = oldvd->vdev_top->vdev_islog; 2639 (void) strcpy(oldpath, oldvd->vdev_path); 2640 pvd = oldvd->vdev_parent; 2641 pguid = pvd->vdev_guid; 2642 2643 /* 2644 * If oldvd has siblings, then half of the time, detach it. 2645 */ 2646 if (oldvd_has_siblings && ztest_random(2) == 0) { 2647 spa_config_exit(spa, SCL_VDEV, FTAG); 2648 error = spa_vdev_detach(spa, oldguid, pguid, B_FALSE); 2649 if (error != 0 && error != ENODEV && error != EBUSY && 2650 error != ENOTSUP) 2651 fatal(0, "detach (%s) returned %d", oldpath, error); 2652 VERIFY(mutex_unlock(&ztest_vdev_lock) == 0); 2653 return; 2654 } 2655 2656 /* 2657 * For the new vdev, choose with equal probability between the two 2658 * standard paths (ending in either 'a' or 'b') or a random hot spare. 2659 */ 2660 if (sav->sav_count != 0 && ztest_random(3) == 0) { 2661 newvd = sav->sav_vdevs[ztest_random(sav->sav_count)]; 2662 newvd_is_spare = B_TRUE; 2663 (void) strcpy(newpath, newvd->vdev_path); 2664 } else { 2665 (void) snprintf(newpath, sizeof (newpath), ztest_dev_template, 2666 ztest_opts.zo_dir, ztest_opts.zo_pool, 2667 top * leaves + leaf); 2668 if (ztest_random(2) == 0) 2669 newpath[strlen(newpath) - 1] = 'b'; 2670 newvd = vdev_lookup_by_path(rvd, newpath); 2671 } 2672 2673 if (newvd) { 2674 newsize = vdev_get_min_asize(newvd); 2675 } else { 2676 /* 2677 * Make newsize a little bigger or smaller than oldsize. 2678 * If it's smaller, the attach should fail. 2679 * If it's larger, and we're doing a replace, 2680 * we should get dynamic LUN growth when we're done. 2681 */ 2682 newsize = 10 * oldsize / (9 + ztest_random(3)); 2683 } 2684 2685 /* 2686 * If pvd is not a mirror or root, the attach should fail with ENOTSUP, 2687 * unless it's a replace; in that case any non-replacing parent is OK. 2688 * 2689 * If newvd is already part of the pool, it should fail with EBUSY. 2690 * 2691 * If newvd is too small, it should fail with EOVERFLOW. 2692 */ 2693 if (pvd->vdev_ops != &vdev_mirror_ops && 2694 pvd->vdev_ops != &vdev_root_ops && (!replacing || 2695 pvd->vdev_ops == &vdev_replacing_ops || 2696 pvd->vdev_ops == &vdev_spare_ops)) 2697 expected_error = ENOTSUP; 2698 else if (newvd_is_spare && (!replacing || oldvd_is_log)) 2699 expected_error = ENOTSUP; 2700 else if (newvd == oldvd) 2701 expected_error = replacing ? 0 : EBUSY; 2702 else if (vdev_lookup_by_path(rvd, newpath) != NULL) 2703 expected_error = EBUSY; 2704 else if (newsize < oldsize) 2705 expected_error = EOVERFLOW; 2706 else if (ashift > oldvd->vdev_top->vdev_ashift) 2707 expected_error = EDOM; 2708 else 2709 expected_error = 0; 2710 2711 spa_config_exit(spa, SCL_VDEV, FTAG); 2712 2713 /* 2714 * Build the nvlist describing newpath. 2715 */ 2716 root = make_vdev_root(newpath, NULL, newvd == NULL ? newsize : 0, 2717 ashift, 0, 0, 0, 1); 2718 2719 error = spa_vdev_attach(spa, oldguid, root, replacing); 2720 2721 nvlist_free(root); 2722 2723 /* 2724 * If our parent was the replacing vdev, but the replace completed, 2725 * then instead of failing with ENOTSUP we may either succeed, 2726 * fail with ENODEV, or fail with EOVERFLOW. 2727 */ 2728 if (expected_error == ENOTSUP && 2729 (error == 0 || error == ENODEV || error == EOVERFLOW)) 2730 expected_error = error; 2731 2732 /* 2733 * If someone grew the LUN, the replacement may be too small. 2734 */ 2735 if (error == EOVERFLOW || error == EBUSY) 2736 expected_error = error; 2737 2738 /* XXX workaround 6690467 */ 2739 if (error != expected_error && expected_error != EBUSY) { 2740 fatal(0, "attach (%s %llu, %s %llu, %d) " 2741 "returned %d, expected %d", 2742 oldpath, (longlong_t)oldsize, newpath, 2743 (longlong_t)newsize, replacing, error, expected_error); 2744 } 2745 2746 VERIFY(mutex_unlock(&ztest_vdev_lock) == 0); 2747 } 2748 2749 /* 2750 * Callback function which expands the physical size of the vdev. 2751 */ 2752 vdev_t * 2753 grow_vdev(vdev_t *vd, void *arg) 2754 { 2755 spa_t *spa = vd->vdev_spa; 2756 size_t *newsize = arg; 2757 size_t fsize; 2758 int fd; 2759 2760 ASSERT(spa_config_held(spa, SCL_STATE, RW_READER) == SCL_STATE); 2761 ASSERT(vd->vdev_ops->vdev_op_leaf); 2762 2763 if ((fd = open(vd->vdev_path, O_RDWR)) == -1) 2764 return (vd); 2765 2766 fsize = lseek(fd, 0, SEEK_END); 2767 (void) ftruncate(fd, *newsize); 2768 2769 if (ztest_opts.zo_verbose >= 6) { 2770 (void) printf("%s grew from %lu to %lu bytes\n", 2771 vd->vdev_path, (ulong_t)fsize, (ulong_t)*newsize); 2772 } 2773 (void) close(fd); 2774 return (NULL); 2775 } 2776 2777 /* 2778 * Callback function which expands a given vdev by calling vdev_online(). 2779 */ 2780 /* ARGSUSED */ 2781 vdev_t * 2782 online_vdev(vdev_t *vd, void *arg) 2783 { 2784 spa_t *spa = vd->vdev_spa; 2785 vdev_t *tvd = vd->vdev_top; 2786 uint64_t guid = vd->vdev_guid; 2787 uint64_t generation = spa->spa_config_generation + 1; 2788 vdev_state_t newstate = VDEV_STATE_UNKNOWN; 2789 int error; 2790 2791 ASSERT(spa_config_held(spa, SCL_STATE, RW_READER) == SCL_STATE); 2792 ASSERT(vd->vdev_ops->vdev_op_leaf); 2793 2794 /* Calling vdev_online will initialize the new metaslabs */ 2795 spa_config_exit(spa, SCL_STATE, spa); 2796 error = vdev_online(spa, guid, ZFS_ONLINE_EXPAND, &newstate); 2797 spa_config_enter(spa, SCL_STATE, spa, RW_READER); 2798 2799 /* 2800 * If vdev_online returned an error or the underlying vdev_open 2801 * failed then we abort the expand. The only way to know that 2802 * vdev_open fails is by checking the returned newstate. 2803 */ 2804 if (error || newstate != VDEV_STATE_HEALTHY) { 2805 if (ztest_opts.zo_verbose >= 5) { 2806 (void) printf("Unable to expand vdev, state %llu, " 2807 "error %d\n", (u_longlong_t)newstate, error); 2808 } 2809 return (vd); 2810 } 2811 ASSERT3U(newstate, ==, VDEV_STATE_HEALTHY); 2812 2813 /* 2814 * Since we dropped the lock we need to ensure that we're 2815 * still talking to the original vdev. It's possible this 2816 * vdev may have been detached/replaced while we were 2817 * trying to online it. 2818 */ 2819 if (generation != spa->spa_config_generation) { 2820 if (ztest_opts.zo_verbose >= 5) { 2821 (void) printf("vdev configuration has changed, " 2822 "guid %llu, state %llu, expected gen %llu, " 2823 "got gen %llu\n", 2824 (u_longlong_t)guid, 2825 (u_longlong_t)tvd->vdev_state, 2826 (u_longlong_t)generation, 2827 (u_longlong_t)spa->spa_config_generation); 2828 } 2829 return (vd); 2830 } 2831 return (NULL); 2832 } 2833 2834 /* 2835 * Traverse the vdev tree calling the supplied function. 2836 * We continue to walk the tree until we either have walked all 2837 * children or we receive a non-NULL return from the callback. 2838 * If a NULL callback is passed, then we just return back the first 2839 * leaf vdev we encounter. 2840 */ 2841 vdev_t * 2842 vdev_walk_tree(vdev_t *vd, vdev_t *(*func)(vdev_t *, void *), void *arg) 2843 { 2844 if (vd->vdev_ops->vdev_op_leaf) { 2845 if (func == NULL) 2846 return (vd); 2847 else 2848 return (func(vd, arg)); 2849 } 2850 2851 for (uint_t c = 0; c < vd->vdev_children; c++) { 2852 vdev_t *cvd = vd->vdev_child[c]; 2853 if ((cvd = vdev_walk_tree(cvd, func, arg)) != NULL) 2854 return (cvd); 2855 } 2856 return (NULL); 2857 } 2858 2859 /* 2860 * Verify that dynamic LUN growth works as expected. 2861 */ 2862 /* ARGSUSED */ 2863 void 2864 ztest_vdev_LUN_growth(ztest_ds_t *zd, uint64_t id) 2865 { 2866 spa_t *spa = ztest_spa; 2867 vdev_t *vd, *tvd; 2868 metaslab_class_t *mc; 2869 metaslab_group_t *mg; 2870 size_t psize, newsize; 2871 uint64_t top; 2872 uint64_t old_class_space, new_class_space, old_ms_count, new_ms_count; 2873 2874 VERIFY(mutex_lock(&ztest_vdev_lock) == 0); 2875 spa_config_enter(spa, SCL_STATE, spa, RW_READER); 2876 2877 top = ztest_random_vdev_top(spa, B_TRUE); 2878 2879 tvd = spa->spa_root_vdev->vdev_child[top]; 2880 mg = tvd->vdev_mg; 2881 mc = mg->mg_class; 2882 old_ms_count = tvd->vdev_ms_count; 2883 old_class_space = metaslab_class_get_space(mc); 2884 2885 /* 2886 * Determine the size of the first leaf vdev associated with 2887 * our top-level device. 2888 */ 2889 vd = vdev_walk_tree(tvd, NULL, NULL); 2890 ASSERT3P(vd, !=, NULL); 2891 ASSERT(vd->vdev_ops->vdev_op_leaf); 2892 2893 psize = vd->vdev_psize; 2894 2895 /* 2896 * We only try to expand the vdev if it's healthy, less than 4x its 2897 * original size, and it has a valid psize. 2898 */ 2899 if (tvd->vdev_state != VDEV_STATE_HEALTHY || 2900 psize == 0 || psize >= 4 * ztest_opts.zo_vdev_size) { 2901 spa_config_exit(spa, SCL_STATE, spa); 2902 VERIFY(mutex_unlock(&ztest_vdev_lock) == 0); 2903 return; 2904 } 2905 ASSERT(psize > 0); 2906 newsize = psize + psize / 8; 2907 ASSERT3U(newsize, >, psize); 2908 2909 if (ztest_opts.zo_verbose >= 6) { 2910 (void) printf("Expanding LUN %s from %lu to %lu\n", 2911 vd->vdev_path, (ulong_t)psize, (ulong_t)newsize); 2912 } 2913 2914 /* 2915 * Growing the vdev is a two step process: 2916 * 1). expand the physical size (i.e. relabel) 2917 * 2). online the vdev to create the new metaslabs 2918 */ 2919 if (vdev_walk_tree(tvd, grow_vdev, &newsize) != NULL || 2920 vdev_walk_tree(tvd, online_vdev, NULL) != NULL || 2921 tvd->vdev_state != VDEV_STATE_HEALTHY) { 2922 if (ztest_opts.zo_verbose >= 5) { 2923 (void) printf("Could not expand LUN because " 2924 "the vdev configuration changed.\n"); 2925 } 2926 spa_config_exit(spa, SCL_STATE, spa); 2927 VERIFY(mutex_unlock(&ztest_vdev_lock) == 0); 2928 return; 2929 } 2930 2931 spa_config_exit(spa, SCL_STATE, spa); 2932 2933 /* 2934 * Expanding the LUN will update the config asynchronously, 2935 * thus we must wait for the async thread to complete any 2936 * pending tasks before proceeding. 2937 */ 2938 for (;;) { 2939 boolean_t done; 2940 mutex_enter(&spa->spa_async_lock); 2941 done = (spa->spa_async_thread == NULL && !spa->spa_async_tasks); 2942 mutex_exit(&spa->spa_async_lock); 2943 if (done) 2944 break; 2945 txg_wait_synced(spa_get_dsl(spa), 0); 2946 (void) poll(NULL, 0, 100); 2947 } 2948 2949 spa_config_enter(spa, SCL_STATE, spa, RW_READER); 2950 2951 tvd = spa->spa_root_vdev->vdev_child[top]; 2952 new_ms_count = tvd->vdev_ms_count; 2953 new_class_space = metaslab_class_get_space(mc); 2954 2955 if (tvd->vdev_mg != mg || mg->mg_class != mc) { 2956 if (ztest_opts.zo_verbose >= 5) { 2957 (void) printf("Could not verify LUN expansion due to " 2958 "intervening vdev offline or remove.\n"); 2959 } 2960 spa_config_exit(spa, SCL_STATE, spa); 2961 VERIFY(mutex_unlock(&ztest_vdev_lock) == 0); 2962 return; 2963 } 2964 2965 /* 2966 * Make sure we were able to grow the vdev. 2967 */ 2968 if (new_ms_count <= old_ms_count) 2969 fatal(0, "LUN expansion failed: ms_count %llu <= %llu\n", 2970 old_ms_count, new_ms_count); 2971 2972 /* 2973 * Make sure we were able to grow the pool. 2974 */ 2975 if (new_class_space <= old_class_space) 2976 fatal(0, "LUN expansion failed: class_space %llu <= %llu\n", 2977 old_class_space, new_class_space); 2978 2979 if (ztest_opts.zo_verbose >= 5) { 2980 char oldnumbuf[6], newnumbuf[6]; 2981 2982 nicenum(old_class_space, oldnumbuf); 2983 nicenum(new_class_space, newnumbuf); 2984 (void) printf("%s grew from %s to %s\n", 2985 spa->spa_name, oldnumbuf, newnumbuf); 2986 } 2987 2988 spa_config_exit(spa, SCL_STATE, spa); 2989 VERIFY(mutex_unlock(&ztest_vdev_lock) == 0); 2990 } 2991 2992 /* 2993 * Verify that dmu_objset_{create,destroy,open,close} work as expected. 2994 */ 2995 /* ARGSUSED */ 2996 static void 2997 ztest_objset_create_cb(objset_t *os, void *arg, cred_t *cr, dmu_tx_t *tx) 2998 { 2999 /* 3000 * Create the objects common to all ztest datasets. 3001 */ 3002 VERIFY(zap_create_claim(os, ZTEST_DIROBJ, 3003 DMU_OT_ZAP_OTHER, DMU_OT_NONE, 0, tx) == 0); 3004 } 3005 3006 static int 3007 ztest_dataset_create(char *dsname) 3008 { 3009 uint64_t zilset = ztest_random(100); 3010 int err = dmu_objset_create(dsname, DMU_OST_OTHER, 0, 3011 ztest_objset_create_cb, NULL); 3012 3013 if (err || zilset < 80) 3014 return (err); 3015 3016 if (ztest_opts.zo_verbose >= 6) 3017 (void) printf("Setting dataset %s to sync always\n", dsname); 3018 return (ztest_dsl_prop_set_uint64(dsname, ZFS_PROP_SYNC, 3019 ZFS_SYNC_ALWAYS, B_FALSE)); 3020 } 3021 3022 /* ARGSUSED */ 3023 static int 3024 ztest_objset_destroy_cb(const char *name, void *arg) 3025 { 3026 objset_t *os; 3027 dmu_object_info_t doi; 3028 int error; 3029 3030 /* 3031 * Verify that the dataset contains a directory object. 3032 */ 3033 VERIFY3U(0, ==, dmu_objset_hold(name, FTAG, &os)); 3034 error = dmu_object_info(os, ZTEST_DIROBJ, &doi); 3035 if (error != ENOENT) { 3036 /* We could have crashed in the middle of destroying it */ 3037 ASSERT3U(error, ==, 0); 3038 ASSERT3U(doi.doi_type, ==, DMU_OT_ZAP_OTHER); 3039 ASSERT3S(doi.doi_physical_blocks_512, >=, 0); 3040 } 3041 dmu_objset_rele(os, FTAG); 3042 3043 /* 3044 * Destroy the dataset. 3045 */ 3046 VERIFY3U(0, ==, dmu_objset_destroy(name, B_FALSE)); 3047 return (0); 3048 } 3049 3050 static boolean_t 3051 ztest_snapshot_create(char *osname, uint64_t id) 3052 { 3053 char snapname[MAXNAMELEN]; 3054 int error; 3055 3056 (void) snprintf(snapname, MAXNAMELEN, "%s@%llu", osname, 3057 (u_longlong_t)id); 3058 3059 error = dmu_objset_snapshot(osname, strchr(snapname, '@') + 1, 3060 NULL, NULL, B_FALSE, B_FALSE, -1); 3061 if (error == ENOSPC) { 3062 ztest_record_enospc(FTAG); 3063 return (B_FALSE); 3064 } 3065 if (error != 0 && error != EEXIST) 3066 fatal(0, "ztest_snapshot_create(%s) = %d", snapname, error); 3067 return (B_TRUE); 3068 } 3069 3070 static boolean_t 3071 ztest_snapshot_destroy(char *osname, uint64_t id) 3072 { 3073 char snapname[MAXNAMELEN]; 3074 int error; 3075 3076 (void) snprintf(snapname, MAXNAMELEN, "%s@%llu", osname, 3077 (u_longlong_t)id); 3078 3079 error = dmu_objset_destroy(snapname, B_FALSE); 3080 if (error != 0 && error != ENOENT) 3081 fatal(0, "ztest_snapshot_destroy(%s) = %d", snapname, error); 3082 return (B_TRUE); 3083 } 3084 3085 /* ARGSUSED */ 3086 void 3087 ztest_dmu_objset_create_destroy(ztest_ds_t *zd, uint64_t id) 3088 { 3089 ztest_ds_t zdtmp; 3090 int iters; 3091 int error; 3092 objset_t *os, *os2; 3093 char name[MAXNAMELEN]; 3094 zilog_t *zilog; 3095 3096 (void) rw_rdlock(&ztest_name_lock); 3097 3098 (void) snprintf(name, MAXNAMELEN, "%s/temp_%llu", 3099 ztest_opts.zo_pool, (u_longlong_t)id); 3100 3101 /* 3102 * If this dataset exists from a previous run, process its replay log 3103 * half of the time. If we don't replay it, then dmu_objset_destroy() 3104 * (invoked from ztest_objset_destroy_cb()) should just throw it away. 3105 */ 3106 if (ztest_random(2) == 0 && 3107 dmu_objset_own(name, DMU_OST_OTHER, B_FALSE, FTAG, &os) == 0) { 3108 ztest_zd_init(&zdtmp, NULL, os); 3109 zil_replay(os, &zdtmp, ztest_replay_vector); 3110 ztest_zd_fini(&zdtmp); 3111 dmu_objset_disown(os, FTAG); 3112 } 3113 3114 /* 3115 * There may be an old instance of the dataset we're about to 3116 * create lying around from a previous run. If so, destroy it 3117 * and all of its snapshots. 3118 */ 3119 (void) dmu_objset_find(name, ztest_objset_destroy_cb, NULL, 3120 DS_FIND_CHILDREN | DS_FIND_SNAPSHOTS); 3121 3122 /* 3123 * Verify that the destroyed dataset is no longer in the namespace. 3124 */ 3125 VERIFY3U(ENOENT, ==, dmu_objset_hold(name, FTAG, &os)); 3126 3127 /* 3128 * Verify that we can create a new dataset. 3129 */ 3130 error = ztest_dataset_create(name); 3131 if (error) { 3132 if (error == ENOSPC) { 3133 ztest_record_enospc(FTAG); 3134 (void) rw_unlock(&ztest_name_lock); 3135 return; 3136 } 3137 fatal(0, "dmu_objset_create(%s) = %d", name, error); 3138 } 3139 3140 VERIFY3U(0, ==, 3141 dmu_objset_own(name, DMU_OST_OTHER, B_FALSE, FTAG, &os)); 3142 3143 ztest_zd_init(&zdtmp, NULL, os); 3144 3145 /* 3146 * Open the intent log for it. 3147 */ 3148 zilog = zil_open(os, ztest_get_data); 3149 3150 /* 3151 * Put some objects in there, do a little I/O to them, 3152 * and randomly take a couple of snapshots along the way. 3153 */ 3154 iters = ztest_random(5); 3155 for (int i = 0; i < iters; i++) { 3156 ztest_dmu_object_alloc_free(&zdtmp, id); 3157 if (ztest_random(iters) == 0) 3158 (void) ztest_snapshot_create(name, i); 3159 } 3160 3161 /* 3162 * Verify that we cannot create an existing dataset. 3163 */ 3164 VERIFY3U(EEXIST, ==, 3165 dmu_objset_create(name, DMU_OST_OTHER, 0, NULL, NULL)); 3166 3167 /* 3168 * Verify that we can hold an objset that is also owned. 3169 */ 3170 VERIFY3U(0, ==, dmu_objset_hold(name, FTAG, &os2)); 3171 dmu_objset_rele(os2, FTAG); 3172 3173 /* 3174 * Verify that we cannot own an objset that is already owned. 3175 */ 3176 VERIFY3U(EBUSY, ==, 3177 dmu_objset_own(name, DMU_OST_OTHER, B_FALSE, FTAG, &os2)); 3178 3179 zil_close(zilog); 3180 dmu_objset_disown(os, FTAG); 3181 ztest_zd_fini(&zdtmp); 3182 3183 (void) rw_unlock(&ztest_name_lock); 3184 } 3185 3186 /* 3187 * Verify that dmu_snapshot_{create,destroy,open,close} work as expected. 3188 */ 3189 void 3190 ztest_dmu_snapshot_create_destroy(ztest_ds_t *zd, uint64_t id) 3191 { 3192 (void) rw_rdlock(&ztest_name_lock); 3193 (void) ztest_snapshot_destroy(zd->zd_name, id); 3194 (void) ztest_snapshot_create(zd->zd_name, id); 3195 (void) rw_unlock(&ztest_name_lock); 3196 } 3197 3198 /* 3199 * Cleanup non-standard snapshots and clones. 3200 */ 3201 void 3202 ztest_dsl_dataset_cleanup(char *osname, uint64_t id) 3203 { 3204 char snap1name[MAXNAMELEN]; 3205 char clone1name[MAXNAMELEN]; 3206 char snap2name[MAXNAMELEN]; 3207 char clone2name[MAXNAMELEN]; 3208 char snap3name[MAXNAMELEN]; 3209 int error; 3210 3211 (void) snprintf(snap1name, MAXNAMELEN, "%s@s1_%llu", osname, id); 3212 (void) snprintf(clone1name, MAXNAMELEN, "%s/c1_%llu", osname, id); 3213 (void) snprintf(snap2name, MAXNAMELEN, "%s@s2_%llu", clone1name, id); 3214 (void) snprintf(clone2name, MAXNAMELEN, "%s/c2_%llu", osname, id); 3215 (void) snprintf(snap3name, MAXNAMELEN, "%s@s3_%llu", clone1name, id); 3216 3217 error = dmu_objset_destroy(clone2name, B_FALSE); 3218 if (error && error != ENOENT) 3219 fatal(0, "dmu_objset_destroy(%s) = %d", clone2name, error); 3220 error = dmu_objset_destroy(snap3name, B_FALSE); 3221 if (error && error != ENOENT) 3222 fatal(0, "dmu_objset_destroy(%s) = %d", snap3name, error); 3223 error = dmu_objset_destroy(snap2name, B_FALSE); 3224 if (error && error != ENOENT) 3225 fatal(0, "dmu_objset_destroy(%s) = %d", snap2name, error); 3226 error = dmu_objset_destroy(clone1name, B_FALSE); 3227 if (error && error != ENOENT) 3228 fatal(0, "dmu_objset_destroy(%s) = %d", clone1name, error); 3229 error = dmu_objset_destroy(snap1name, B_FALSE); 3230 if (error && error != ENOENT) 3231 fatal(0, "dmu_objset_destroy(%s) = %d", snap1name, error); 3232 } 3233 3234 /* 3235 * Verify dsl_dataset_promote handles EBUSY 3236 */ 3237 void 3238 ztest_dsl_dataset_promote_busy(ztest_ds_t *zd, uint64_t id) 3239 { 3240 objset_t *clone; 3241 dsl_dataset_t *ds; 3242 char snap1name[MAXNAMELEN]; 3243 char clone1name[MAXNAMELEN]; 3244 char snap2name[MAXNAMELEN]; 3245 char clone2name[MAXNAMELEN]; 3246 char snap3name[MAXNAMELEN]; 3247 char *osname = zd->zd_name; 3248 int error; 3249 3250 (void) rw_rdlock(&ztest_name_lock); 3251 3252 ztest_dsl_dataset_cleanup(osname, id); 3253 3254 (void) snprintf(snap1name, MAXNAMELEN, "%s@s1_%llu", osname, id); 3255 (void) snprintf(clone1name, MAXNAMELEN, "%s/c1_%llu", osname, id); 3256 (void) snprintf(snap2name, MAXNAMELEN, "%s@s2_%llu", clone1name, id); 3257 (void) snprintf(clone2name, MAXNAMELEN, "%s/c2_%llu", osname, id); 3258 (void) snprintf(snap3name, MAXNAMELEN, "%s@s3_%llu", clone1name, id); 3259 3260 error = dmu_objset_snapshot(osname, strchr(snap1name, '@')+1, 3261 NULL, NULL, B_FALSE, B_FALSE, -1); 3262 if (error && error != EEXIST) { 3263 if (error == ENOSPC) { 3264 ztest_record_enospc(FTAG); 3265 goto out; 3266 } 3267 fatal(0, "dmu_take_snapshot(%s) = %d", snap1name, error); 3268 } 3269 3270 error = dmu_objset_hold(snap1name, FTAG, &clone); 3271 if (error) 3272 fatal(0, "dmu_open_snapshot(%s) = %d", snap1name, error); 3273 3274 error = dmu_objset_clone(clone1name, dmu_objset_ds(clone), 0); 3275 dmu_objset_rele(clone, FTAG); 3276 if (error) { 3277 if (error == ENOSPC) { 3278 ztest_record_enospc(FTAG); 3279 goto out; 3280 } 3281 fatal(0, "dmu_objset_create(%s) = %d", clone1name, error); 3282 } 3283 3284 error = dmu_objset_snapshot(clone1name, strchr(snap2name, '@')+1, 3285 NULL, NULL, B_FALSE, B_FALSE, -1); 3286 if (error && error != EEXIST) { 3287 if (error == ENOSPC) { 3288 ztest_record_enospc(FTAG); 3289 goto out; 3290 } 3291 fatal(0, "dmu_open_snapshot(%s) = %d", snap2name, error); 3292 } 3293 3294 error = dmu_objset_snapshot(clone1name, strchr(snap3name, '@')+1, 3295 NULL, NULL, B_FALSE, B_FALSE, -1); 3296 if (error && error != EEXIST) { 3297 if (error == ENOSPC) { 3298 ztest_record_enospc(FTAG); 3299 goto out; 3300 } 3301 fatal(0, "dmu_open_snapshot(%s) = %d", snap3name, error); 3302 } 3303 3304 error = dmu_objset_hold(snap3name, FTAG, &clone); 3305 if (error) 3306 fatal(0, "dmu_open_snapshot(%s) = %d", snap3name, error); 3307 3308 error = dmu_objset_clone(clone2name, dmu_objset_ds(clone), 0); 3309 dmu_objset_rele(clone, FTAG); 3310 if (error) { 3311 if (error == ENOSPC) { 3312 ztest_record_enospc(FTAG); 3313 goto out; 3314 } 3315 fatal(0, "dmu_objset_create(%s) = %d", clone2name, error); 3316 } 3317 3318 error = dsl_dataset_own(snap2name, B_FALSE, FTAG, &ds); 3319 if (error) 3320 fatal(0, "dsl_dataset_own(%s) = %d", snap2name, error); 3321 error = dsl_dataset_promote(clone2name, NULL); 3322 if (error != EBUSY) 3323 fatal(0, "dsl_dataset_promote(%s), %d, not EBUSY", clone2name, 3324 error); 3325 dsl_dataset_disown(ds, FTAG); 3326 3327 out: 3328 ztest_dsl_dataset_cleanup(osname, id); 3329 3330 (void) rw_unlock(&ztest_name_lock); 3331 } 3332 3333 /* 3334 * Verify that dmu_object_{alloc,free} work as expected. 3335 */ 3336 void 3337 ztest_dmu_object_alloc_free(ztest_ds_t *zd, uint64_t id) 3338 { 3339 ztest_od_t od[4]; 3340 int batchsize = sizeof (od) / sizeof (od[0]); 3341 3342 for (int b = 0; b < batchsize; b++) 3343 ztest_od_init(&od[b], id, FTAG, b, DMU_OT_UINT64_OTHER, 0, 0); 3344 3345 /* 3346 * Destroy the previous batch of objects, create a new batch, 3347 * and do some I/O on the new objects. 3348 */ 3349 if (ztest_object_init(zd, od, sizeof (od), B_TRUE) != 0) 3350 return; 3351 3352 while (ztest_random(4 * batchsize) != 0) 3353 ztest_io(zd, od[ztest_random(batchsize)].od_object, 3354 ztest_random(ZTEST_RANGE_LOCKS) << SPA_MAXBLOCKSHIFT); 3355 } 3356 3357 /* 3358 * Verify that dmu_{read,write} work as expected. 3359 */ 3360 void 3361 ztest_dmu_read_write(ztest_ds_t *zd, uint64_t id) 3362 { 3363 objset_t *os = zd->zd_os; 3364 ztest_od_t od[2]; 3365 dmu_tx_t *tx; 3366 int i, freeit, error; 3367 uint64_t n, s, txg; 3368 bufwad_t *packbuf, *bigbuf, *pack, *bigH, *bigT; 3369 uint64_t packobj, packoff, packsize, bigobj, bigoff, bigsize; 3370 uint64_t chunksize = (1000 + ztest_random(1000)) * sizeof (uint64_t); 3371 uint64_t regions = 997; 3372 uint64_t stride = 123456789ULL; 3373 uint64_t width = 40; 3374 int free_percent = 5; 3375 3376 /* 3377 * This test uses two objects, packobj and bigobj, that are always 3378 * updated together (i.e. in the same tx) so that their contents are 3379 * in sync and can be compared. Their contents relate to each other 3380 * in a simple way: packobj is a dense array of 'bufwad' structures, 3381 * while bigobj is a sparse array of the same bufwads. Specifically, 3382 * for any index n, there are three bufwads that should be identical: 3383 * 3384 * packobj, at offset n * sizeof (bufwad_t) 3385 * bigobj, at the head of the nth chunk 3386 * bigobj, at the tail of the nth chunk 3387 * 3388 * The chunk size is arbitrary. It doesn't have to be a power of two, 3389 * and it doesn't have any relation to the object blocksize. 3390 * The only requirement is that it can hold at least two bufwads. 3391 * 3392 * Normally, we write the bufwad to each of these locations. 3393 * However, free_percent of the time we instead write zeroes to 3394 * packobj and perform a dmu_free_range() on bigobj. By comparing 3395 * bigobj to packobj, we can verify that the DMU is correctly 3396 * tracking which parts of an object are allocated and free, 3397 * and that the contents of the allocated blocks are correct. 3398 */ 3399 3400 /* 3401 * Read the directory info. If it's the first time, set things up. 3402 */ 3403 ztest_od_init(&od[0], id, FTAG, 0, DMU_OT_UINT64_OTHER, 0, chunksize); 3404 ztest_od_init(&od[1], id, FTAG, 1, DMU_OT_UINT64_OTHER, 0, chunksize); 3405 3406 if (ztest_object_init(zd, od, sizeof (od), B_FALSE) != 0) 3407 return; 3408 3409 bigobj = od[0].od_object; 3410 packobj = od[1].od_object; 3411 chunksize = od[0].od_gen; 3412 ASSERT(chunksize == od[1].od_gen); 3413 3414 /* 3415 * Prefetch a random chunk of the big object. 3416 * Our aim here is to get some async reads in flight 3417 * for blocks that we may free below; the DMU should 3418 * handle this race correctly. 3419 */ 3420 n = ztest_random(regions) * stride + ztest_random(width); 3421 s = 1 + ztest_random(2 * width - 1); 3422 dmu_prefetch(os, bigobj, n * chunksize, s * chunksize); 3423 3424 /* 3425 * Pick a random index and compute the offsets into packobj and bigobj. 3426 */ 3427 n = ztest_random(regions) * stride + ztest_random(width); 3428 s = 1 + ztest_random(width - 1); 3429 3430 packoff = n * sizeof (bufwad_t); 3431 packsize = s * sizeof (bufwad_t); 3432 3433 bigoff = n * chunksize; 3434 bigsize = s * chunksize; 3435 3436 packbuf = umem_alloc(packsize, UMEM_NOFAIL); 3437 bigbuf = umem_alloc(bigsize, UMEM_NOFAIL); 3438 3439 /* 3440 * free_percent of the time, free a range of bigobj rather than 3441 * overwriting it. 3442 */ 3443 freeit = (ztest_random(100) < free_percent); 3444 3445 /* 3446 * Read the current contents of our objects. 3447 */ 3448 error = dmu_read(os, packobj, packoff, packsize, packbuf, 3449 DMU_READ_PREFETCH); 3450 ASSERT3U(error, ==, 0); 3451 error = dmu_read(os, bigobj, bigoff, bigsize, bigbuf, 3452 DMU_READ_PREFETCH); 3453 ASSERT3U(error, ==, 0); 3454 3455 /* 3456 * Get a tx for the mods to both packobj and bigobj. 3457 */ 3458 tx = dmu_tx_create(os); 3459 3460 dmu_tx_hold_write(tx, packobj, packoff, packsize); 3461 3462 if (freeit) 3463 dmu_tx_hold_free(tx, bigobj, bigoff, bigsize); 3464 else 3465 dmu_tx_hold_write(tx, bigobj, bigoff, bigsize); 3466 3467 txg = ztest_tx_assign(tx, TXG_MIGHTWAIT, FTAG); 3468 if (txg == 0) { 3469 umem_free(packbuf, packsize); 3470 umem_free(bigbuf, bigsize); 3471 return; 3472 } 3473 3474 dmu_object_set_checksum(os, bigobj, 3475 (enum zio_checksum)ztest_random_dsl_prop(ZFS_PROP_CHECKSUM), tx); 3476 3477 dmu_object_set_compress(os, bigobj, 3478 (enum zio_compress)ztest_random_dsl_prop(ZFS_PROP_COMPRESSION), tx); 3479 3480 /* 3481 * For each index from n to n + s, verify that the existing bufwad 3482 * in packobj matches the bufwads at the head and tail of the 3483 * corresponding chunk in bigobj. Then update all three bufwads 3484 * with the new values we want to write out. 3485 */ 3486 for (i = 0; i < s; i++) { 3487 /* LINTED */ 3488 pack = (bufwad_t *)((char *)packbuf + i * sizeof (bufwad_t)); 3489 /* LINTED */ 3490 bigH = (bufwad_t *)((char *)bigbuf + i * chunksize); 3491 /* LINTED */ 3492 bigT = (bufwad_t *)((char *)bigH + chunksize) - 1; 3493 3494 ASSERT((uintptr_t)bigH - (uintptr_t)bigbuf < bigsize); 3495 ASSERT((uintptr_t)bigT - (uintptr_t)bigbuf < bigsize); 3496 3497 if (pack->bw_txg > txg) 3498 fatal(0, "future leak: got %llx, open txg is %llx", 3499 pack->bw_txg, txg); 3500 3501 if (pack->bw_data != 0 && pack->bw_index != n + i) 3502 fatal(0, "wrong index: got %llx, wanted %llx+%llx", 3503 pack->bw_index, n, i); 3504 3505 if (bcmp(pack, bigH, sizeof (bufwad_t)) != 0) 3506 fatal(0, "pack/bigH mismatch in %p/%p", pack, bigH); 3507 3508 if (bcmp(pack, bigT, sizeof (bufwad_t)) != 0) 3509 fatal(0, "pack/bigT mismatch in %p/%p", pack, bigT); 3510 3511 if (freeit) { 3512 bzero(pack, sizeof (bufwad_t)); 3513 } else { 3514 pack->bw_index = n + i; 3515 pack->bw_txg = txg; 3516 pack->bw_data = 1 + ztest_random(-2ULL); 3517 } 3518 *bigH = *pack; 3519 *bigT = *pack; 3520 } 3521 3522 /* 3523 * We've verified all the old bufwads, and made new ones. 3524 * Now write them out. 3525 */ 3526 dmu_write(os, packobj, packoff, packsize, packbuf, tx); 3527 3528 if (freeit) { 3529 if (ztest_opts.zo_verbose >= 7) { 3530 (void) printf("freeing offset %llx size %llx" 3531 " txg %llx\n", 3532 (u_longlong_t)bigoff, 3533 (u_longlong_t)bigsize, 3534 (u_longlong_t)txg); 3535 } 3536 VERIFY(0 == dmu_free_range(os, bigobj, bigoff, bigsize, tx)); 3537 } else { 3538 if (ztest_opts.zo_verbose >= 7) { 3539 (void) printf("writing offset %llx size %llx" 3540 " txg %llx\n", 3541 (u_longlong_t)bigoff, 3542 (u_longlong_t)bigsize, 3543 (u_longlong_t)txg); 3544 } 3545 dmu_write(os, bigobj, bigoff, bigsize, bigbuf, tx); 3546 } 3547 3548 dmu_tx_commit(tx); 3549 3550 /* 3551 * Sanity check the stuff we just wrote. 3552 */ 3553 { 3554 void *packcheck = umem_alloc(packsize, UMEM_NOFAIL); 3555 void *bigcheck = umem_alloc(bigsize, UMEM_NOFAIL); 3556 3557 VERIFY(0 == dmu_read(os, packobj, packoff, 3558 packsize, packcheck, DMU_READ_PREFETCH)); 3559 VERIFY(0 == dmu_read(os, bigobj, bigoff, 3560 bigsize, bigcheck, DMU_READ_PREFETCH)); 3561 3562 ASSERT(bcmp(packbuf, packcheck, packsize) == 0); 3563 ASSERT(bcmp(bigbuf, bigcheck, bigsize) == 0); 3564 3565 umem_free(packcheck, packsize); 3566 umem_free(bigcheck, bigsize); 3567 } 3568 3569 umem_free(packbuf, packsize); 3570 umem_free(bigbuf, bigsize); 3571 } 3572 3573 void 3574 compare_and_update_pbbufs(uint64_t s, bufwad_t *packbuf, bufwad_t *bigbuf, 3575 uint64_t bigsize, uint64_t n, uint64_t chunksize, uint64_t txg) 3576 { 3577 uint64_t i; 3578 bufwad_t *pack; 3579 bufwad_t *bigH; 3580 bufwad_t *bigT; 3581 3582 /* 3583 * For each index from n to n + s, verify that the existing bufwad 3584 * in packobj matches the bufwads at the head and tail of the 3585 * corresponding chunk in bigobj. Then update all three bufwads 3586 * with the new values we want to write out. 3587 */ 3588 for (i = 0; i < s; i++) { 3589 /* LINTED */ 3590 pack = (bufwad_t *)((char *)packbuf + i * sizeof (bufwad_t)); 3591 /* LINTED */ 3592 bigH = (bufwad_t *)((char *)bigbuf + i * chunksize); 3593 /* LINTED */ 3594 bigT = (bufwad_t *)((char *)bigH + chunksize) - 1; 3595 3596 ASSERT((uintptr_t)bigH - (uintptr_t)bigbuf < bigsize); 3597 ASSERT((uintptr_t)bigT - (uintptr_t)bigbuf < bigsize); 3598 3599 if (pack->bw_txg > txg) 3600 fatal(0, "future leak: got %llx, open txg is %llx", 3601 pack->bw_txg, txg); 3602 3603 if (pack->bw_data != 0 && pack->bw_index != n + i) 3604 fatal(0, "wrong index: got %llx, wanted %llx+%llx", 3605 pack->bw_index, n, i); 3606 3607 if (bcmp(pack, bigH, sizeof (bufwad_t)) != 0) 3608 fatal(0, "pack/bigH mismatch in %p/%p", pack, bigH); 3609 3610 if (bcmp(pack, bigT, sizeof (bufwad_t)) != 0) 3611 fatal(0, "pack/bigT mismatch in %p/%p", pack, bigT); 3612 3613 pack->bw_index = n + i; 3614 pack->bw_txg = txg; 3615 pack->bw_data = 1 + ztest_random(-2ULL); 3616 3617 *bigH = *pack; 3618 *bigT = *pack; 3619 } 3620 } 3621 3622 void 3623 ztest_dmu_read_write_zcopy(ztest_ds_t *zd, uint64_t id) 3624 { 3625 objset_t *os = zd->zd_os; 3626 ztest_od_t od[2]; 3627 dmu_tx_t *tx; 3628 uint64_t i; 3629 int error; 3630 uint64_t n, s, txg; 3631 bufwad_t *packbuf, *bigbuf; 3632 uint64_t packobj, packoff, packsize, bigobj, bigoff, bigsize; 3633 uint64_t blocksize = ztest_random_blocksize(); 3634 uint64_t chunksize = blocksize; 3635 uint64_t regions = 997; 3636 uint64_t stride = 123456789ULL; 3637 uint64_t width = 9; 3638 dmu_buf_t *bonus_db; 3639 arc_buf_t **bigbuf_arcbufs; 3640 dmu_object_info_t doi; 3641 3642 /* 3643 * This test uses two objects, packobj and bigobj, that are always 3644 * updated together (i.e. in the same tx) so that their contents are 3645 * in sync and can be compared. Their contents relate to each other 3646 * in a simple way: packobj is a dense array of 'bufwad' structures, 3647 * while bigobj is a sparse array of the same bufwads. Specifically, 3648 * for any index n, there are three bufwads that should be identical: 3649 * 3650 * packobj, at offset n * sizeof (bufwad_t) 3651 * bigobj, at the head of the nth chunk 3652 * bigobj, at the tail of the nth chunk 3653 * 3654 * The chunk size is set equal to bigobj block size so that 3655 * dmu_assign_arcbuf() can be tested for object updates. 3656 */ 3657 3658 /* 3659 * Read the directory info. If it's the first time, set things up. 3660 */ 3661 ztest_od_init(&od[0], id, FTAG, 0, DMU_OT_UINT64_OTHER, blocksize, 0); 3662 ztest_od_init(&od[1], id, FTAG, 1, DMU_OT_UINT64_OTHER, 0, chunksize); 3663 3664 if (ztest_object_init(zd, od, sizeof (od), B_FALSE) != 0) 3665 return; 3666 3667 bigobj = od[0].od_object; 3668 packobj = od[1].od_object; 3669 blocksize = od[0].od_blocksize; 3670 chunksize = blocksize; 3671 ASSERT(chunksize == od[1].od_gen); 3672 3673 VERIFY(dmu_object_info(os, bigobj, &doi) == 0); 3674 VERIFY(ISP2(doi.doi_data_block_size)); 3675 VERIFY(chunksize == doi.doi_data_block_size); 3676 VERIFY(chunksize >= 2 * sizeof (bufwad_t)); 3677 3678 /* 3679 * Pick a random index and compute the offsets into packobj and bigobj. 3680 */ 3681 n = ztest_random(regions) * stride + ztest_random(width); 3682 s = 1 + ztest_random(width - 1); 3683 3684 packoff = n * sizeof (bufwad_t); 3685 packsize = s * sizeof (bufwad_t); 3686 3687 bigoff = n * chunksize; 3688 bigsize = s * chunksize; 3689 3690 packbuf = umem_zalloc(packsize, UMEM_NOFAIL); 3691 bigbuf = umem_zalloc(bigsize, UMEM_NOFAIL); 3692 3693 VERIFY3U(0, ==, dmu_bonus_hold(os, bigobj, FTAG, &bonus_db)); 3694 3695 bigbuf_arcbufs = umem_zalloc(2 * s * sizeof (arc_buf_t *), UMEM_NOFAIL); 3696 3697 /* 3698 * Iteration 0 test zcopy for DB_UNCACHED dbufs. 3699 * Iteration 1 test zcopy to already referenced dbufs. 3700 * Iteration 2 test zcopy to dirty dbuf in the same txg. 3701 * Iteration 3 test zcopy to dbuf dirty in previous txg. 3702 * Iteration 4 test zcopy when dbuf is no longer dirty. 3703 * Iteration 5 test zcopy when it can't be done. 3704 * Iteration 6 one more zcopy write. 3705 */ 3706 for (i = 0; i < 7; i++) { 3707 uint64_t j; 3708 uint64_t off; 3709 3710 /* 3711 * In iteration 5 (i == 5) use arcbufs 3712 * that don't match bigobj blksz to test 3713 * dmu_assign_arcbuf() when it can't directly 3714 * assign an arcbuf to a dbuf. 3715 */ 3716 for (j = 0; j < s; j++) { 3717 if (i != 5) { 3718 bigbuf_arcbufs[j] = 3719 dmu_request_arcbuf(bonus_db, chunksize); 3720 } else { 3721 bigbuf_arcbufs[2 * j] = 3722 dmu_request_arcbuf(bonus_db, chunksize / 2); 3723 bigbuf_arcbufs[2 * j + 1] = 3724 dmu_request_arcbuf(bonus_db, chunksize / 2); 3725 } 3726 } 3727 3728 /* 3729 * Get a tx for the mods to both packobj and bigobj. 3730 */ 3731 tx = dmu_tx_create(os); 3732 3733 dmu_tx_hold_write(tx, packobj, packoff, packsize); 3734 dmu_tx_hold_write(tx, bigobj, bigoff, bigsize); 3735 3736 txg = ztest_tx_assign(tx, TXG_MIGHTWAIT, FTAG); 3737 if (txg == 0) { 3738 umem_free(packbuf, packsize); 3739 umem_free(bigbuf, bigsize); 3740 for (j = 0; j < s; j++) { 3741 if (i != 5) { 3742 dmu_return_arcbuf(bigbuf_arcbufs[j]); 3743 } else { 3744 dmu_return_arcbuf( 3745 bigbuf_arcbufs[2 * j]); 3746 dmu_return_arcbuf( 3747 bigbuf_arcbufs[2 * j + 1]); 3748 } 3749 } 3750 umem_free(bigbuf_arcbufs, 2 * s * sizeof (arc_buf_t *)); 3751 dmu_buf_rele(bonus_db, FTAG); 3752 return; 3753 } 3754 3755 /* 3756 * 50% of the time don't read objects in the 1st iteration to 3757 * test dmu_assign_arcbuf() for the case when there're no 3758 * existing dbufs for the specified offsets. 3759 */ 3760 if (i != 0 || ztest_random(2) != 0) { 3761 error = dmu_read(os, packobj, packoff, 3762 packsize, packbuf, DMU_READ_PREFETCH); 3763 ASSERT3U(error, ==, 0); 3764 error = dmu_read(os, bigobj, bigoff, bigsize, 3765 bigbuf, DMU_READ_PREFETCH); 3766 ASSERT3U(error, ==, 0); 3767 } 3768 compare_and_update_pbbufs(s, packbuf, bigbuf, bigsize, 3769 n, chunksize, txg); 3770 3771 /* 3772 * We've verified all the old bufwads, and made new ones. 3773 * Now write them out. 3774 */ 3775 dmu_write(os, packobj, packoff, packsize, packbuf, tx); 3776 if (ztest_opts.zo_verbose >= 7) { 3777 (void) printf("writing offset %llx size %llx" 3778 " txg %llx\n", 3779 (u_longlong_t)bigoff, 3780 (u_longlong_t)bigsize, 3781 (u_longlong_t)txg); 3782 } 3783 for (off = bigoff, j = 0; j < s; j++, off += chunksize) { 3784 dmu_buf_t *dbt; 3785 if (i != 5) { 3786 bcopy((caddr_t)bigbuf + (off - bigoff), 3787 bigbuf_arcbufs[j]->b_data, chunksize); 3788 } else { 3789 bcopy((caddr_t)bigbuf + (off - bigoff), 3790 bigbuf_arcbufs[2 * j]->b_data, 3791 chunksize / 2); 3792 bcopy((caddr_t)bigbuf + (off - bigoff) + 3793 chunksize / 2, 3794 bigbuf_arcbufs[2 * j + 1]->b_data, 3795 chunksize / 2); 3796 } 3797 3798 if (i == 1) { 3799 VERIFY(dmu_buf_hold(os, bigobj, off, 3800 FTAG, &dbt, DMU_READ_NO_PREFETCH) == 0); 3801 } 3802 if (i != 5) { 3803 dmu_assign_arcbuf(bonus_db, off, 3804 bigbuf_arcbufs[j], tx); 3805 } else { 3806 dmu_assign_arcbuf(bonus_db, off, 3807 bigbuf_arcbufs[2 * j], tx); 3808 dmu_assign_arcbuf(bonus_db, 3809 off + chunksize / 2, 3810 bigbuf_arcbufs[2 * j + 1], tx); 3811 } 3812 if (i == 1) { 3813 dmu_buf_rele(dbt, FTAG); 3814 } 3815 } 3816 dmu_tx_commit(tx); 3817 3818 /* 3819 * Sanity check the stuff we just wrote. 3820 */ 3821 { 3822 void *packcheck = umem_alloc(packsize, UMEM_NOFAIL); 3823 void *bigcheck = umem_alloc(bigsize, UMEM_NOFAIL); 3824 3825 VERIFY(0 == dmu_read(os, packobj, packoff, 3826 packsize, packcheck, DMU_READ_PREFETCH)); 3827 VERIFY(0 == dmu_read(os, bigobj, bigoff, 3828 bigsize, bigcheck, DMU_READ_PREFETCH)); 3829 3830 ASSERT(bcmp(packbuf, packcheck, packsize) == 0); 3831 ASSERT(bcmp(bigbuf, bigcheck, bigsize) == 0); 3832 3833 umem_free(packcheck, packsize); 3834 umem_free(bigcheck, bigsize); 3835 } 3836 if (i == 2) { 3837 txg_wait_open(dmu_objset_pool(os), 0); 3838 } else if (i == 3) { 3839 txg_wait_synced(dmu_objset_pool(os), 0); 3840 } 3841 } 3842 3843 dmu_buf_rele(bonus_db, FTAG); 3844 umem_free(packbuf, packsize); 3845 umem_free(bigbuf, bigsize); 3846 umem_free(bigbuf_arcbufs, 2 * s * sizeof (arc_buf_t *)); 3847 } 3848 3849 /* ARGSUSED */ 3850 void 3851 ztest_dmu_write_parallel(ztest_ds_t *zd, uint64_t id) 3852 { 3853 ztest_od_t od[1]; 3854 uint64_t offset = (1ULL << (ztest_random(20) + 43)) + 3855 (ztest_random(ZTEST_RANGE_LOCKS) << SPA_MAXBLOCKSHIFT); 3856 3857 /* 3858 * Have multiple threads write to large offsets in an object 3859 * to verify that parallel writes to an object -- even to the 3860 * same blocks within the object -- doesn't cause any trouble. 3861 */ 3862 ztest_od_init(&od[0], ID_PARALLEL, FTAG, 0, DMU_OT_UINT64_OTHER, 0, 0); 3863 3864 if (ztest_object_init(zd, od, sizeof (od), B_FALSE) != 0) 3865 return; 3866 3867 while (ztest_random(10) != 0) 3868 ztest_io(zd, od[0].od_object, offset); 3869 } 3870 3871 void 3872 ztest_dmu_prealloc(ztest_ds_t *zd, uint64_t id) 3873 { 3874 ztest_od_t od[1]; 3875 uint64_t offset = (1ULL << (ztest_random(4) + SPA_MAXBLOCKSHIFT)) + 3876 (ztest_random(ZTEST_RANGE_LOCKS) << SPA_MAXBLOCKSHIFT); 3877 uint64_t count = ztest_random(20) + 1; 3878 uint64_t blocksize = ztest_random_blocksize(); 3879 void *data; 3880 3881 ztest_od_init(&od[0], id, FTAG, 0, DMU_OT_UINT64_OTHER, blocksize, 0); 3882 3883 if (ztest_object_init(zd, od, sizeof (od), !ztest_random(2)) != 0) 3884 return; 3885 3886 if (ztest_truncate(zd, od[0].od_object, offset, count * blocksize) != 0) 3887 return; 3888 3889 ztest_prealloc(zd, od[0].od_object, offset, count * blocksize); 3890 3891 data = umem_zalloc(blocksize, UMEM_NOFAIL); 3892 3893 while (ztest_random(count) != 0) { 3894 uint64_t randoff = offset + (ztest_random(count) * blocksize); 3895 if (ztest_write(zd, od[0].od_object, randoff, blocksize, 3896 data) != 0) 3897 break; 3898 while (ztest_random(4) != 0) 3899 ztest_io(zd, od[0].od_object, randoff); 3900 } 3901 3902 umem_free(data, blocksize); 3903 } 3904 3905 /* 3906 * Verify that zap_{create,destroy,add,remove,update} work as expected. 3907 */ 3908 #define ZTEST_ZAP_MIN_INTS 1 3909 #define ZTEST_ZAP_MAX_INTS 4 3910 #define ZTEST_ZAP_MAX_PROPS 1000 3911 3912 void 3913 ztest_zap(ztest_ds_t *zd, uint64_t id) 3914 { 3915 objset_t *os = zd->zd_os; 3916 ztest_od_t od[1]; 3917 uint64_t object; 3918 uint64_t txg, last_txg; 3919 uint64_t value[ZTEST_ZAP_MAX_INTS]; 3920 uint64_t zl_ints, zl_intsize, prop; 3921 int i, ints; 3922 dmu_tx_t *tx; 3923 char propname[100], txgname[100]; 3924 int error; 3925 char *hc[2] = { "s.acl.h", ".s.open.h.hyLZlg" }; 3926 3927 ztest_od_init(&od[0], id, FTAG, 0, DMU_OT_ZAP_OTHER, 0, 0); 3928 3929 if (ztest_object_init(zd, od, sizeof (od), !ztest_random(2)) != 0) 3930 return; 3931 3932 object = od[0].od_object; 3933 3934 /* 3935 * Generate a known hash collision, and verify that 3936 * we can lookup and remove both entries. 3937 */ 3938 tx = dmu_tx_create(os); 3939 dmu_tx_hold_zap(tx, object, B_TRUE, NULL); 3940 txg = ztest_tx_assign(tx, TXG_MIGHTWAIT, FTAG); 3941 if (txg == 0) 3942 return; 3943 for (i = 0; i < 2; i++) { 3944 value[i] = i; 3945 VERIFY3U(0, ==, zap_add(os, object, hc[i], sizeof (uint64_t), 3946 1, &value[i], tx)); 3947 } 3948 for (i = 0; i < 2; i++) { 3949 VERIFY3U(EEXIST, ==, zap_add(os, object, hc[i], 3950 sizeof (uint64_t), 1, &value[i], tx)); 3951 VERIFY3U(0, ==, 3952 zap_length(os, object, hc[i], &zl_intsize, &zl_ints)); 3953 ASSERT3U(zl_intsize, ==, sizeof (uint64_t)); 3954 ASSERT3U(zl_ints, ==, 1); 3955 } 3956 for (i = 0; i < 2; i++) { 3957 VERIFY3U(0, ==, zap_remove(os, object, hc[i], tx)); 3958 } 3959 dmu_tx_commit(tx); 3960 3961 /* 3962 * Generate a buch of random entries. 3963 */ 3964 ints = MAX(ZTEST_ZAP_MIN_INTS, object % ZTEST_ZAP_MAX_INTS); 3965 3966 prop = ztest_random(ZTEST_ZAP_MAX_PROPS); 3967 (void) sprintf(propname, "prop_%llu", (u_longlong_t)prop); 3968 (void) sprintf(txgname, "txg_%llu", (u_longlong_t)prop); 3969 bzero(value, sizeof (value)); 3970 last_txg = 0; 3971 3972 /* 3973 * If these zap entries already exist, validate their contents. 3974 */ 3975 error = zap_length(os, object, txgname, &zl_intsize, &zl_ints); 3976 if (error == 0) { 3977 ASSERT3U(zl_intsize, ==, sizeof (uint64_t)); 3978 ASSERT3U(zl_ints, ==, 1); 3979 3980 VERIFY(zap_lookup(os, object, txgname, zl_intsize, 3981 zl_ints, &last_txg) == 0); 3982 3983 VERIFY(zap_length(os, object, propname, &zl_intsize, 3984 &zl_ints) == 0); 3985 3986 ASSERT3U(zl_intsize, ==, sizeof (uint64_t)); 3987 ASSERT3U(zl_ints, ==, ints); 3988 3989 VERIFY(zap_lookup(os, object, propname, zl_intsize, 3990 zl_ints, value) == 0); 3991 3992 for (i = 0; i < ints; i++) { 3993 ASSERT3U(value[i], ==, last_txg + object + i); 3994 } 3995 } else { 3996 ASSERT3U(error, ==, ENOENT); 3997 } 3998 3999 /* 4000 * Atomically update two entries in our zap object. 4001 * The first is named txg_%llu, and contains the txg 4002 * in which the property was last updated. The second 4003 * is named prop_%llu, and the nth element of its value 4004 * should be txg + object + n. 4005 */ 4006 tx = dmu_tx_create(os); 4007 dmu_tx_hold_zap(tx, object, B_TRUE, NULL); 4008 txg = ztest_tx_assign(tx, TXG_MIGHTWAIT, FTAG); 4009 if (txg == 0) 4010 return; 4011 4012 if (last_txg > txg) 4013 fatal(0, "zap future leak: old %llu new %llu", last_txg, txg); 4014 4015 for (i = 0; i < ints; i++) 4016 value[i] = txg + object + i; 4017 4018 VERIFY3U(0, ==, zap_update(os, object, txgname, sizeof (uint64_t), 4019 1, &txg, tx)); 4020 VERIFY3U(0, ==, zap_update(os, object, propname, sizeof (uint64_t), 4021 ints, value, tx)); 4022 4023 dmu_tx_commit(tx); 4024 4025 /* 4026 * Remove a random pair of entries. 4027 */ 4028 prop = ztest_random(ZTEST_ZAP_MAX_PROPS); 4029 (void) sprintf(propname, "prop_%llu", (u_longlong_t)prop); 4030 (void) sprintf(txgname, "txg_%llu", (u_longlong_t)prop); 4031 4032 error = zap_length(os, object, txgname, &zl_intsize, &zl_ints); 4033 4034 if (error == ENOENT) 4035 return; 4036 4037 ASSERT3U(error, ==, 0); 4038 4039 tx = dmu_tx_create(os); 4040 dmu_tx_hold_zap(tx, object, B_TRUE, NULL); 4041 txg = ztest_tx_assign(tx, TXG_MIGHTWAIT, FTAG); 4042 if (txg == 0) 4043 return; 4044 VERIFY3U(0, ==, zap_remove(os, object, txgname, tx)); 4045 VERIFY3U(0, ==, zap_remove(os, object, propname, tx)); 4046 dmu_tx_commit(tx); 4047 } 4048 4049 /* 4050 * Testcase to test the upgrading of a microzap to fatzap. 4051 */ 4052 void 4053 ztest_fzap(ztest_ds_t *zd, uint64_t id) 4054 { 4055 objset_t *os = zd->zd_os; 4056 ztest_od_t od[1]; 4057 uint64_t object, txg; 4058 4059 ztest_od_init(&od[0], id, FTAG, 0, DMU_OT_ZAP_OTHER, 0, 0); 4060 4061 if (ztest_object_init(zd, od, sizeof (od), !ztest_random(2)) != 0) 4062 return; 4063 4064 object = od[0].od_object; 4065 4066 /* 4067 * Add entries to this ZAP and make sure it spills over 4068 * and gets upgraded to a fatzap. Also, since we are adding 4069 * 2050 entries we should see ptrtbl growth and leaf-block split. 4070 */ 4071 for (int i = 0; i < 2050; i++) { 4072 char name[MAXNAMELEN]; 4073 uint64_t value = i; 4074 dmu_tx_t *tx; 4075 int error; 4076 4077 (void) snprintf(name, sizeof (name), "fzap-%llu-%llu", 4078 id, value); 4079 4080 tx = dmu_tx_create(os); 4081 dmu_tx_hold_zap(tx, object, B_TRUE, name); 4082 txg = ztest_tx_assign(tx, TXG_MIGHTWAIT, FTAG); 4083 if (txg == 0) 4084 return; 4085 error = zap_add(os, object, name, sizeof (uint64_t), 1, 4086 &value, tx); 4087 ASSERT(error == 0 || error == EEXIST); 4088 dmu_tx_commit(tx); 4089 } 4090 } 4091 4092 /* ARGSUSED */ 4093 void 4094 ztest_zap_parallel(ztest_ds_t *zd, uint64_t id) 4095 { 4096 objset_t *os = zd->zd_os; 4097 ztest_od_t od[1]; 4098 uint64_t txg, object, count, wsize, wc, zl_wsize, zl_wc; 4099 dmu_tx_t *tx; 4100 int i, namelen, error; 4101 int micro = ztest_random(2); 4102 char name[20], string_value[20]; 4103 void *data; 4104 4105 ztest_od_init(&od[0], ID_PARALLEL, FTAG, micro, DMU_OT_ZAP_OTHER, 0, 0); 4106 4107 if (ztest_object_init(zd, od, sizeof (od), B_FALSE) != 0) 4108 return; 4109 4110 object = od[0].od_object; 4111 4112 /* 4113 * Generate a random name of the form 'xxx.....' where each 4114 * x is a random printable character and the dots are dots. 4115 * There are 94 such characters, and the name length goes from 4116 * 6 to 20, so there are 94^3 * 15 = 12,458,760 possible names. 4117 */ 4118 namelen = ztest_random(sizeof (name) - 5) + 5 + 1; 4119 4120 for (i = 0; i < 3; i++) 4121 name[i] = '!' + ztest_random('~' - '!' + 1); 4122 for (; i < namelen - 1; i++) 4123 name[i] = '.'; 4124 name[i] = '\0'; 4125 4126 if ((namelen & 1) || micro) { 4127 wsize = sizeof (txg); 4128 wc = 1; 4129 data = &txg; 4130 } else { 4131 wsize = 1; 4132 wc = namelen; 4133 data = string_value; 4134 } 4135 4136 count = -1ULL; 4137 VERIFY(zap_count(os, object, &count) == 0); 4138 ASSERT(count != -1ULL); 4139 4140 /* 4141 * Select an operation: length, lookup, add, update, remove. 4142 */ 4143 i = ztest_random(5); 4144 4145 if (i >= 2) { 4146 tx = dmu_tx_create(os); 4147 dmu_tx_hold_zap(tx, object, B_TRUE, NULL); 4148 txg = ztest_tx_assign(tx, TXG_MIGHTWAIT, FTAG); 4149 if (txg == 0) 4150 return; 4151 bcopy(name, string_value, namelen); 4152 } else { 4153 tx = NULL; 4154 txg = 0; 4155 bzero(string_value, namelen); 4156 } 4157 4158 switch (i) { 4159 4160 case 0: 4161 error = zap_length(os, object, name, &zl_wsize, &zl_wc); 4162 if (error == 0) { 4163 ASSERT3U(wsize, ==, zl_wsize); 4164 ASSERT3U(wc, ==, zl_wc); 4165 } else { 4166 ASSERT3U(error, ==, ENOENT); 4167 } 4168 break; 4169 4170 case 1: 4171 error = zap_lookup(os, object, name, wsize, wc, data); 4172 if (error == 0) { 4173 if (data == string_value && 4174 bcmp(name, data, namelen) != 0) 4175 fatal(0, "name '%s' != val '%s' len %d", 4176 name, data, namelen); 4177 } else { 4178 ASSERT3U(error, ==, ENOENT); 4179 } 4180 break; 4181 4182 case 2: 4183 error = zap_add(os, object, name, wsize, wc, data, tx); 4184 ASSERT(error == 0 || error == EEXIST); 4185 break; 4186 4187 case 3: 4188 VERIFY(zap_update(os, object, name, wsize, wc, data, tx) == 0); 4189 break; 4190 4191 case 4: 4192 error = zap_remove(os, object, name, tx); 4193 ASSERT(error == 0 || error == ENOENT); 4194 break; 4195 } 4196 4197 if (tx != NULL) 4198 dmu_tx_commit(tx); 4199 } 4200 4201 /* 4202 * Commit callback data. 4203 */ 4204 typedef struct ztest_cb_data { 4205 list_node_t zcd_node; 4206 uint64_t zcd_txg; 4207 int zcd_expected_err; 4208 boolean_t zcd_added; 4209 boolean_t zcd_called; 4210 spa_t *zcd_spa; 4211 } ztest_cb_data_t; 4212 4213 /* This is the actual commit callback function */ 4214 static void 4215 ztest_commit_callback(void *arg, int error) 4216 { 4217 ztest_cb_data_t *data = arg; 4218 uint64_t synced_txg; 4219 4220 VERIFY(data != NULL); 4221 VERIFY3S(data->zcd_expected_err, ==, error); 4222 VERIFY(!data->zcd_called); 4223 4224 synced_txg = spa_last_synced_txg(data->zcd_spa); 4225 if (data->zcd_txg > synced_txg) 4226 fatal(0, "commit callback of txg %" PRIu64 " called prematurely" 4227 ", last synced txg = %" PRIu64 "\n", data->zcd_txg, 4228 synced_txg); 4229 4230 data->zcd_called = B_TRUE; 4231 4232 if (error == ECANCELED) { 4233 ASSERT3U(data->zcd_txg, ==, 0); 4234 ASSERT(!data->zcd_added); 4235 4236 /* 4237 * The private callback data should be destroyed here, but 4238 * since we are going to check the zcd_called field after 4239 * dmu_tx_abort(), we will destroy it there. 4240 */ 4241 return; 4242 } 4243 4244 /* Was this callback added to the global callback list? */ 4245 if (!data->zcd_added) 4246 goto out; 4247 4248 ASSERT3U(data->zcd_txg, !=, 0); 4249 4250 /* Remove our callback from the list */ 4251 (void) mutex_lock(&zcl.zcl_callbacks_lock); 4252 list_remove(&zcl.zcl_callbacks, data); 4253 (void) mutex_unlock(&zcl.zcl_callbacks_lock); 4254 4255 out: 4256 umem_free(data, sizeof (ztest_cb_data_t)); 4257 } 4258 4259 /* Allocate and initialize callback data structure */ 4260 static ztest_cb_data_t * 4261 ztest_create_cb_data(objset_t *os, uint64_t txg) 4262 { 4263 ztest_cb_data_t *cb_data; 4264 4265 cb_data = umem_zalloc(sizeof (ztest_cb_data_t), UMEM_NOFAIL); 4266 4267 cb_data->zcd_txg = txg; 4268 cb_data->zcd_spa = dmu_objset_spa(os); 4269 4270 return (cb_data); 4271 } 4272 4273 /* 4274 * If a number of txgs equal to this threshold have been created after a commit 4275 * callback has been registered but not called, then we assume there is an 4276 * implementation bug. 4277 */ 4278 #define ZTEST_COMMIT_CALLBACK_THRESH (TXG_CONCURRENT_STATES + 2) 4279 4280 /* 4281 * Commit callback test. 4282 */ 4283 void 4284 ztest_dmu_commit_callbacks(ztest_ds_t *zd, uint64_t id) 4285 { 4286 objset_t *os = zd->zd_os; 4287 ztest_od_t od[1]; 4288 dmu_tx_t *tx; 4289 ztest_cb_data_t *cb_data[3], *tmp_cb; 4290 uint64_t old_txg, txg; 4291 int i, error; 4292 4293 ztest_od_init(&od[0], id, FTAG, 0, DMU_OT_UINT64_OTHER, 0, 0); 4294 4295 if (ztest_object_init(zd, od, sizeof (od), B_FALSE) != 0) 4296 return; 4297 4298 tx = dmu_tx_create(os); 4299 4300 cb_data[0] = ztest_create_cb_data(os, 0); 4301 dmu_tx_callback_register(tx, ztest_commit_callback, cb_data[0]); 4302 4303 dmu_tx_hold_write(tx, od[0].od_object, 0, sizeof (uint64_t)); 4304 4305 /* Every once in a while, abort the transaction on purpose */ 4306 if (ztest_random(100) == 0) 4307 error = -1; 4308 4309 if (!error) 4310 error = dmu_tx_assign(tx, TXG_NOWAIT); 4311 4312 txg = error ? 0 : dmu_tx_get_txg(tx); 4313 4314 cb_data[0]->zcd_txg = txg; 4315 cb_data[1] = ztest_create_cb_data(os, txg); 4316 dmu_tx_callback_register(tx, ztest_commit_callback, cb_data[1]); 4317 4318 if (error) { 4319 /* 4320 * It's not a strict requirement to call the registered 4321 * callbacks from inside dmu_tx_abort(), but that's what 4322 * it's supposed to happen in the current implementation 4323 * so we will check for that. 4324 */ 4325 for (i = 0; i < 2; i++) { 4326 cb_data[i]->zcd_expected_err = ECANCELED; 4327 VERIFY(!cb_data[i]->zcd_called); 4328 } 4329 4330 dmu_tx_abort(tx); 4331 4332 for (i = 0; i < 2; i++) { 4333 VERIFY(cb_data[i]->zcd_called); 4334 umem_free(cb_data[i], sizeof (ztest_cb_data_t)); 4335 } 4336 4337 return; 4338 } 4339 4340 cb_data[2] = ztest_create_cb_data(os, txg); 4341 dmu_tx_callback_register(tx, ztest_commit_callback, cb_data[2]); 4342 4343 /* 4344 * Read existing data to make sure there isn't a future leak. 4345 */ 4346 VERIFY(0 == dmu_read(os, od[0].od_object, 0, sizeof (uint64_t), 4347 &old_txg, DMU_READ_PREFETCH)); 4348 4349 if (old_txg > txg) 4350 fatal(0, "future leak: got %" PRIu64 ", open txg is %" PRIu64, 4351 old_txg, txg); 4352 4353 dmu_write(os, od[0].od_object, 0, sizeof (uint64_t), &txg, tx); 4354 4355 (void) mutex_lock(&zcl.zcl_callbacks_lock); 4356 4357 /* 4358 * Since commit callbacks don't have any ordering requirement and since 4359 * it is theoretically possible for a commit callback to be called 4360 * after an arbitrary amount of time has elapsed since its txg has been 4361 * synced, it is difficult to reliably determine whether a commit 4362 * callback hasn't been called due to high load or due to a flawed 4363 * implementation. 4364 * 4365 * In practice, we will assume that if after a certain number of txgs a 4366 * commit callback hasn't been called, then most likely there's an 4367 * implementation bug.. 4368 */ 4369 tmp_cb = list_head(&zcl.zcl_callbacks); 4370 if (tmp_cb != NULL && 4371 tmp_cb->zcd_txg > txg - ZTEST_COMMIT_CALLBACK_THRESH) { 4372 fatal(0, "Commit callback threshold exceeded, oldest txg: %" 4373 PRIu64 ", open txg: %" PRIu64 "\n", tmp_cb->zcd_txg, txg); 4374 } 4375 4376 /* 4377 * Let's find the place to insert our callbacks. 4378 * 4379 * Even though the list is ordered by txg, it is possible for the 4380 * insertion point to not be the end because our txg may already be 4381 * quiescing at this point and other callbacks in the open txg 4382 * (from other objsets) may have sneaked in. 4383 */ 4384 tmp_cb = list_tail(&zcl.zcl_callbacks); 4385 while (tmp_cb != NULL && tmp_cb->zcd_txg > txg) 4386 tmp_cb = list_prev(&zcl.zcl_callbacks, tmp_cb); 4387 4388 /* Add the 3 callbacks to the list */ 4389 for (i = 0; i < 3; i++) { 4390 if (tmp_cb == NULL) 4391 list_insert_head(&zcl.zcl_callbacks, cb_data[i]); 4392 else 4393 list_insert_after(&zcl.zcl_callbacks, tmp_cb, 4394 cb_data[i]); 4395 4396 cb_data[i]->zcd_added = B_TRUE; 4397 VERIFY(!cb_data[i]->zcd_called); 4398 4399 tmp_cb = cb_data[i]; 4400 } 4401 4402 (void) mutex_unlock(&zcl.zcl_callbacks_lock); 4403 4404 dmu_tx_commit(tx); 4405 } 4406 4407 /* ARGSUSED */ 4408 void 4409 ztest_dsl_prop_get_set(ztest_ds_t *zd, uint64_t id) 4410 { 4411 zfs_prop_t proplist[] = { 4412 ZFS_PROP_CHECKSUM, 4413 ZFS_PROP_COMPRESSION, 4414 ZFS_PROP_COPIES, 4415 ZFS_PROP_DEDUP 4416 }; 4417 4418 (void) rw_rdlock(&ztest_name_lock); 4419 4420 for (int p = 0; p < sizeof (proplist) / sizeof (proplist[0]); p++) 4421 (void) ztest_dsl_prop_set_uint64(zd->zd_name, proplist[p], 4422 ztest_random_dsl_prop(proplist[p]), (int)ztest_random(2)); 4423 4424 (void) rw_unlock(&ztest_name_lock); 4425 } 4426 4427 /* ARGSUSED */ 4428 void 4429 ztest_spa_prop_get_set(ztest_ds_t *zd, uint64_t id) 4430 { 4431 nvlist_t *props = NULL; 4432 4433 (void) rw_rdlock(&ztest_name_lock); 4434 4435 (void) ztest_spa_prop_set_uint64(ZPOOL_PROP_DEDUPDITTO, 4436 ZIO_DEDUPDITTO_MIN + ztest_random(ZIO_DEDUPDITTO_MIN)); 4437 4438 VERIFY3U(spa_prop_get(ztest_spa, &props), ==, 0); 4439 4440 if (ztest_opts.zo_verbose >= 6) 4441 dump_nvlist(props, 4); 4442 4443 nvlist_free(props); 4444 4445 (void) rw_unlock(&ztest_name_lock); 4446 } 4447 4448 /* 4449 * Test snapshot hold/release and deferred destroy. 4450 */ 4451 void 4452 ztest_dmu_snapshot_hold(ztest_ds_t *zd, uint64_t id) 4453 { 4454 int error; 4455 objset_t *os = zd->zd_os; 4456 objset_t *origin; 4457 char snapname[100]; 4458 char fullname[100]; 4459 char clonename[100]; 4460 char tag[100]; 4461 char osname[MAXNAMELEN]; 4462 4463 (void) rw_rdlock(&ztest_name_lock); 4464 4465 dmu_objset_name(os, osname); 4466 4467 (void) snprintf(snapname, 100, "sh1_%llu", id); 4468 (void) snprintf(fullname, 100, "%s@%s", osname, snapname); 4469 (void) snprintf(clonename, 100, "%s/ch1_%llu", osname, id); 4470 (void) snprintf(tag, 100, "%tag_%llu", id); 4471 4472 /* 4473 * Clean up from any previous run. 4474 */ 4475 (void) dmu_objset_destroy(clonename, B_FALSE); 4476 (void) dsl_dataset_user_release(osname, snapname, tag, B_FALSE); 4477 (void) dmu_objset_destroy(fullname, B_FALSE); 4478 4479 /* 4480 * Create snapshot, clone it, mark snap for deferred destroy, 4481 * destroy clone, verify snap was also destroyed. 4482 */ 4483 error = dmu_objset_snapshot(osname, snapname, NULL, NULL, FALSE, 4484 FALSE, -1); 4485 if (error) { 4486 if (error == ENOSPC) { 4487 ztest_record_enospc("dmu_objset_snapshot"); 4488 goto out; 4489 } 4490 fatal(0, "dmu_objset_snapshot(%s) = %d", fullname, error); 4491 } 4492 4493 error = dmu_objset_hold(fullname, FTAG, &origin); 4494 if (error) 4495 fatal(0, "dmu_objset_hold(%s) = %d", fullname, error); 4496 4497 error = dmu_objset_clone(clonename, dmu_objset_ds(origin), 0); 4498 dmu_objset_rele(origin, FTAG); 4499 if (error) { 4500 if (error == ENOSPC) { 4501 ztest_record_enospc("dmu_objset_clone"); 4502 goto out; 4503 } 4504 fatal(0, "dmu_objset_clone(%s) = %d", clonename, error); 4505 } 4506 4507 error = dmu_objset_destroy(fullname, B_TRUE); 4508 if (error) { 4509 fatal(0, "dmu_objset_destroy(%s, B_TRUE) = %d", 4510 fullname, error); 4511 } 4512 4513 error = dmu_objset_destroy(clonename, B_FALSE); 4514 if (error) 4515 fatal(0, "dmu_objset_destroy(%s) = %d", clonename, error); 4516 4517 error = dmu_objset_hold(fullname, FTAG, &origin); 4518 if (error != ENOENT) 4519 fatal(0, "dmu_objset_hold(%s) = %d", fullname, error); 4520 4521 /* 4522 * Create snapshot, add temporary hold, verify that we can't 4523 * destroy a held snapshot, mark for deferred destroy, 4524 * release hold, verify snapshot was destroyed. 4525 */ 4526 error = dmu_objset_snapshot(osname, snapname, NULL, NULL, FALSE, 4527 FALSE, -1); 4528 if (error) { 4529 if (error == ENOSPC) { 4530 ztest_record_enospc("dmu_objset_snapshot"); 4531 goto out; 4532 } 4533 fatal(0, "dmu_objset_snapshot(%s) = %d", fullname, error); 4534 } 4535 4536 error = dsl_dataset_user_hold(osname, snapname, tag, B_FALSE, 4537 B_TRUE, -1); 4538 if (error) 4539 fatal(0, "dsl_dataset_user_hold(%s)", fullname, tag); 4540 4541 error = dmu_objset_destroy(fullname, B_FALSE); 4542 if (error != EBUSY) { 4543 fatal(0, "dmu_objset_destroy(%s, B_FALSE) = %d", 4544 fullname, error); 4545 } 4546 4547 error = dmu_objset_destroy(fullname, B_TRUE); 4548 if (error) { 4549 fatal(0, "dmu_objset_destroy(%s, B_TRUE) = %d", 4550 fullname, error); 4551 } 4552 4553 error = dsl_dataset_user_release(osname, snapname, tag, B_FALSE); 4554 if (error) 4555 fatal(0, "dsl_dataset_user_release(%s)", fullname, tag); 4556 4557 VERIFY(dmu_objset_hold(fullname, FTAG, &origin) == ENOENT); 4558 4559 out: 4560 (void) rw_unlock(&ztest_name_lock); 4561 } 4562 4563 /* 4564 * Inject random faults into the on-disk data. 4565 */ 4566 /* ARGSUSED */ 4567 void 4568 ztest_fault_inject(ztest_ds_t *zd, uint64_t id) 4569 { 4570 ztest_shared_t *zs = ztest_shared; 4571 spa_t *spa = ztest_spa; 4572 int fd; 4573 uint64_t offset; 4574 uint64_t leaves; 4575 uint64_t bad = 0x1990c0ffeedecade; 4576 uint64_t top, leaf; 4577 char path0[MAXPATHLEN]; 4578 char pathrand[MAXPATHLEN]; 4579 size_t fsize; 4580 int bshift = SPA_MAXBLOCKSHIFT + 2; /* don't scrog all labels */ 4581 int iters = 1000; 4582 int maxfaults; 4583 int mirror_save; 4584 vdev_t *vd0 = NULL; 4585 uint64_t guid0 = 0; 4586 boolean_t islog = B_FALSE; 4587 4588 VERIFY(mutex_lock(&ztest_vdev_lock) == 0); 4589 maxfaults = MAXFAULTS(); 4590 leaves = MAX(zs->zs_mirrors, 1) * ztest_opts.zo_raidz; 4591 mirror_save = zs->zs_mirrors; 4592 VERIFY(mutex_unlock(&ztest_vdev_lock) == 0); 4593 4594 ASSERT(leaves >= 1); 4595 4596 /* 4597 * We need SCL_STATE here because we're going to look at vd0->vdev_tsd. 4598 */ 4599 spa_config_enter(spa, SCL_STATE, FTAG, RW_READER); 4600 4601 if (ztest_random(2) == 0) { 4602 /* 4603 * Inject errors on a normal data device or slog device. 4604 */ 4605 top = ztest_random_vdev_top(spa, B_TRUE); 4606 leaf = ztest_random(leaves) + zs->zs_splits; 4607 4608 /* 4609 * Generate paths to the first leaf in this top-level vdev, 4610 * and to the random leaf we selected. We'll induce transient 4611 * write failures and random online/offline activity on leaf 0, 4612 * and we'll write random garbage to the randomly chosen leaf. 4613 */ 4614 (void) snprintf(path0, sizeof (path0), ztest_dev_template, 4615 ztest_opts.zo_dir, ztest_opts.zo_pool, 4616 top * leaves + zs->zs_splits); 4617 (void) snprintf(pathrand, sizeof (pathrand), ztest_dev_template, 4618 ztest_opts.zo_dir, ztest_opts.zo_pool, 4619 top * leaves + leaf); 4620 4621 vd0 = vdev_lookup_by_path(spa->spa_root_vdev, path0); 4622 if (vd0 != NULL && vd0->vdev_top->vdev_islog) 4623 islog = B_TRUE; 4624 4625 if (vd0 != NULL && maxfaults != 1) { 4626 /* 4627 * Make vd0 explicitly claim to be unreadable, 4628 * or unwriteable, or reach behind its back 4629 * and close the underlying fd. We can do this if 4630 * maxfaults == 0 because we'll fail and reexecute, 4631 * and we can do it if maxfaults >= 2 because we'll 4632 * have enough redundancy. If maxfaults == 1, the 4633 * combination of this with injection of random data 4634 * corruption below exceeds the pool's fault tolerance. 4635 */ 4636 vdev_file_t *vf = vd0->vdev_tsd; 4637 4638 if (vf != NULL && ztest_random(3) == 0) { 4639 (void) close(vf->vf_vnode->v_fd); 4640 vf->vf_vnode->v_fd = -1; 4641 } else if (ztest_random(2) == 0) { 4642 vd0->vdev_cant_read = B_TRUE; 4643 } else { 4644 vd0->vdev_cant_write = B_TRUE; 4645 } 4646 guid0 = vd0->vdev_guid; 4647 } 4648 } else { 4649 /* 4650 * Inject errors on an l2cache device. 4651 */ 4652 spa_aux_vdev_t *sav = &spa->spa_l2cache; 4653 4654 if (sav->sav_count == 0) { 4655 spa_config_exit(spa, SCL_STATE, FTAG); 4656 return; 4657 } 4658 vd0 = sav->sav_vdevs[ztest_random(sav->sav_count)]; 4659 guid0 = vd0->vdev_guid; 4660 (void) strcpy(path0, vd0->vdev_path); 4661 (void) strcpy(pathrand, vd0->vdev_path); 4662 4663 leaf = 0; 4664 leaves = 1; 4665 maxfaults = INT_MAX; /* no limit on cache devices */ 4666 } 4667 4668 spa_config_exit(spa, SCL_STATE, FTAG); 4669 4670 /* 4671 * If we can tolerate two or more faults, or we're dealing 4672 * with a slog, randomly online/offline vd0. 4673 */ 4674 if ((maxfaults >= 2 || islog) && guid0 != 0) { 4675 if (ztest_random(10) < 6) { 4676 int flags = (ztest_random(2) == 0 ? 4677 ZFS_OFFLINE_TEMPORARY : 0); 4678 4679 /* 4680 * We have to grab the zs_name_lock as writer to 4681 * prevent a race between offlining a slog and 4682 * destroying a dataset. Offlining the slog will 4683 * grab a reference on the dataset which may cause 4684 * dmu_objset_destroy() to fail with EBUSY thus 4685 * leaving the dataset in an inconsistent state. 4686 */ 4687 if (islog) 4688 (void) rw_wrlock(&ztest_name_lock); 4689 4690 VERIFY(vdev_offline(spa, guid0, flags) != EBUSY); 4691 4692 if (islog) 4693 (void) rw_unlock(&ztest_name_lock); 4694 } else { 4695 (void) vdev_online(spa, guid0, 0, NULL); 4696 } 4697 } 4698 4699 if (maxfaults == 0) 4700 return; 4701 4702 /* 4703 * We have at least single-fault tolerance, so inject data corruption. 4704 */ 4705 fd = open(pathrand, O_RDWR); 4706 4707 if (fd == -1) /* we hit a gap in the device namespace */ 4708 return; 4709 4710 fsize = lseek(fd, 0, SEEK_END); 4711 4712 while (--iters != 0) { 4713 offset = ztest_random(fsize / (leaves << bshift)) * 4714 (leaves << bshift) + (leaf << bshift) + 4715 (ztest_random(1ULL << (bshift - 1)) & -8ULL); 4716 4717 if (offset >= fsize) 4718 continue; 4719 4720 VERIFY(mutex_lock(&ztest_vdev_lock) == 0); 4721 if (mirror_save != zs->zs_mirrors) { 4722 VERIFY(mutex_unlock(&ztest_vdev_lock) == 0); 4723 (void) close(fd); 4724 return; 4725 } 4726 4727 if (pwrite(fd, &bad, sizeof (bad), offset) != sizeof (bad)) 4728 fatal(1, "can't inject bad word at 0x%llx in %s", 4729 offset, pathrand); 4730 4731 VERIFY(mutex_unlock(&ztest_vdev_lock) == 0); 4732 4733 if (ztest_opts.zo_verbose >= 7) 4734 (void) printf("injected bad word into %s," 4735 " offset 0x%llx\n", pathrand, (u_longlong_t)offset); 4736 } 4737 4738 (void) close(fd); 4739 } 4740 4741 /* 4742 * Verify that DDT repair works as expected. 4743 */ 4744 void 4745 ztest_ddt_repair(ztest_ds_t *zd, uint64_t id) 4746 { 4747 ztest_shared_t *zs = ztest_shared; 4748 spa_t *spa = ztest_spa; 4749 objset_t *os = zd->zd_os; 4750 ztest_od_t od[1]; 4751 uint64_t object, blocksize, txg, pattern, psize; 4752 enum zio_checksum checksum = spa_dedup_checksum(spa); 4753 dmu_buf_t *db; 4754 dmu_tx_t *tx; 4755 void *buf; 4756 blkptr_t blk; 4757 int copies = 2 * ZIO_DEDUPDITTO_MIN; 4758 4759 blocksize = ztest_random_blocksize(); 4760 blocksize = MIN(blocksize, 2048); /* because we write so many */ 4761 4762 ztest_od_init(&od[0], id, FTAG, 0, DMU_OT_UINT64_OTHER, blocksize, 0); 4763 4764 if (ztest_object_init(zd, od, sizeof (od), B_FALSE) != 0) 4765 return; 4766 4767 /* 4768 * Take the name lock as writer to prevent anyone else from changing 4769 * the pool and dataset properies we need to maintain during this test. 4770 */ 4771 (void) rw_wrlock(&ztest_name_lock); 4772 4773 if (ztest_dsl_prop_set_uint64(zd->zd_name, ZFS_PROP_DEDUP, checksum, 4774 B_FALSE) != 0 || 4775 ztest_dsl_prop_set_uint64(zd->zd_name, ZFS_PROP_COPIES, 1, 4776 B_FALSE) != 0) { 4777 (void) rw_unlock(&ztest_name_lock); 4778 return; 4779 } 4780 4781 object = od[0].od_object; 4782 blocksize = od[0].od_blocksize; 4783 pattern = zs->zs_guid ^ dmu_objset_fsid_guid(os); 4784 4785 ASSERT(object != 0); 4786 4787 tx = dmu_tx_create(os); 4788 dmu_tx_hold_write(tx, object, 0, copies * blocksize); 4789 txg = ztest_tx_assign(tx, TXG_WAIT, FTAG); 4790 if (txg == 0) { 4791 (void) rw_unlock(&ztest_name_lock); 4792 return; 4793 } 4794 4795 /* 4796 * Write all the copies of our block. 4797 */ 4798 for (int i = 0; i < copies; i++) { 4799 uint64_t offset = i * blocksize; 4800 VERIFY(dmu_buf_hold(os, object, offset, FTAG, &db, 4801 DMU_READ_NO_PREFETCH) == 0); 4802 ASSERT(db->db_offset == offset); 4803 ASSERT(db->db_size == blocksize); 4804 ASSERT(ztest_pattern_match(db->db_data, db->db_size, pattern) || 4805 ztest_pattern_match(db->db_data, db->db_size, 0ULL)); 4806 dmu_buf_will_fill(db, tx); 4807 ztest_pattern_set(db->db_data, db->db_size, pattern); 4808 dmu_buf_rele(db, FTAG); 4809 } 4810 4811 dmu_tx_commit(tx); 4812 txg_wait_synced(spa_get_dsl(spa), txg); 4813 4814 /* 4815 * Find out what block we got. 4816 */ 4817 VERIFY(dmu_buf_hold(os, object, 0, FTAG, &db, 4818 DMU_READ_NO_PREFETCH) == 0); 4819 blk = *((dmu_buf_impl_t *)db)->db_blkptr; 4820 dmu_buf_rele(db, FTAG); 4821 4822 /* 4823 * Damage the block. Dedup-ditto will save us when we read it later. 4824 */ 4825 psize = BP_GET_PSIZE(&blk); 4826 buf = zio_buf_alloc(psize); 4827 ztest_pattern_set(buf, psize, ~pattern); 4828 4829 (void) zio_wait(zio_rewrite(NULL, spa, 0, &blk, 4830 buf, psize, NULL, NULL, ZIO_PRIORITY_SYNC_WRITE, 4831 ZIO_FLAG_CANFAIL | ZIO_FLAG_INDUCE_DAMAGE, NULL)); 4832 4833 zio_buf_free(buf, psize); 4834 4835 (void) rw_unlock(&ztest_name_lock); 4836 } 4837 4838 /* 4839 * Scrub the pool. 4840 */ 4841 /* ARGSUSED */ 4842 void 4843 ztest_scrub(ztest_ds_t *zd, uint64_t id) 4844 { 4845 spa_t *spa = ztest_spa; 4846 4847 (void) spa_scan(spa, POOL_SCAN_SCRUB); 4848 (void) poll(NULL, 0, 100); /* wait a moment, then force a restart */ 4849 (void) spa_scan(spa, POOL_SCAN_SCRUB); 4850 } 4851 4852 /* 4853 * Change the guid for the pool. 4854 */ 4855 /* ARGSUSED */ 4856 void 4857 ztest_reguid(ztest_ds_t *zd, uint64_t id) 4858 { 4859 spa_t *spa = ztest_spa; 4860 uint64_t orig, load; 4861 4862 orig = spa_guid(spa); 4863 load = spa_load_guid(spa); 4864 if (spa_change_guid(spa) != 0) 4865 return; 4866 4867 if (ztest_opts.zo_verbose >= 3) { 4868 (void) printf("Changed guid old %llu -> %llu\n", 4869 (u_longlong_t)orig, (u_longlong_t)spa_guid(spa)); 4870 } 4871 4872 VERIFY3U(orig, !=, spa_guid(spa)); 4873 VERIFY3U(load, ==, spa_load_guid(spa)); 4874 } 4875 4876 /* 4877 * Rename the pool to a different name and then rename it back. 4878 */ 4879 /* ARGSUSED */ 4880 void 4881 ztest_spa_rename(ztest_ds_t *zd, uint64_t id) 4882 { 4883 char *oldname, *newname; 4884 spa_t *spa; 4885 4886 (void) rw_wrlock(&ztest_name_lock); 4887 4888 oldname = ztest_opts.zo_pool; 4889 newname = umem_alloc(strlen(oldname) + 5, UMEM_NOFAIL); 4890 (void) strcpy(newname, oldname); 4891 (void) strcat(newname, "_tmp"); 4892 4893 /* 4894 * Do the rename 4895 */ 4896 VERIFY3U(0, ==, spa_rename(oldname, newname)); 4897 4898 /* 4899 * Try to open it under the old name, which shouldn't exist 4900 */ 4901 VERIFY3U(ENOENT, ==, spa_open(oldname, &spa, FTAG)); 4902 4903 /* 4904 * Open it under the new name and make sure it's still the same spa_t. 4905 */ 4906 VERIFY3U(0, ==, spa_open(newname, &spa, FTAG)); 4907 4908 ASSERT(spa == ztest_spa); 4909 spa_close(spa, FTAG); 4910 4911 /* 4912 * Rename it back to the original 4913 */ 4914 VERIFY3U(0, ==, spa_rename(newname, oldname)); 4915 4916 /* 4917 * Make sure it can still be opened 4918 */ 4919 VERIFY3U(0, ==, spa_open(oldname, &spa, FTAG)); 4920 4921 ASSERT(spa == ztest_spa); 4922 spa_close(spa, FTAG); 4923 4924 umem_free(newname, strlen(newname) + 1); 4925 4926 (void) rw_unlock(&ztest_name_lock); 4927 } 4928 4929 /* 4930 * Verify pool integrity by running zdb. 4931 */ 4932 static void 4933 ztest_run_zdb(char *pool) 4934 { 4935 int status; 4936 char zdb[MAXPATHLEN + MAXNAMELEN + 20]; 4937 char zbuf[1024]; 4938 char *bin; 4939 char *ztest; 4940 char *isa; 4941 int isalen; 4942 FILE *fp; 4943 4944 (void) realpath(getexecname(), zdb); 4945 4946 /* zdb lives in /usr/sbin, while ztest lives in /usr/bin */ 4947 bin = strstr(zdb, "/usr/bin/"); 4948 ztest = strstr(bin, "/ztest"); 4949 isa = bin + 8; 4950 isalen = ztest - isa; 4951 isa = strdup(isa); 4952 /* LINTED */ 4953 (void) sprintf(bin, 4954 "/usr/sbin%.*s/zdb -bcc%s%s -U %s %s", 4955 isalen, 4956 isa, 4957 ztest_opts.zo_verbose >= 3 ? "s" : "", 4958 ztest_opts.zo_verbose >= 4 ? "v" : "", 4959 spa_config_path, 4960 pool); 4961 free(isa); 4962 4963 if (ztest_opts.zo_verbose >= 5) 4964 (void) printf("Executing %s\n", strstr(zdb, "zdb ")); 4965 4966 fp = popen(zdb, "r"); 4967 4968 while (fgets(zbuf, sizeof (zbuf), fp) != NULL) 4969 if (ztest_opts.zo_verbose >= 3) 4970 (void) printf("%s", zbuf); 4971 4972 status = pclose(fp); 4973 4974 if (status == 0) 4975 return; 4976 4977 ztest_dump_core = 0; 4978 if (WIFEXITED(status)) 4979 fatal(0, "'%s' exit code %d", zdb, WEXITSTATUS(status)); 4980 else 4981 fatal(0, "'%s' died with signal %d", zdb, WTERMSIG(status)); 4982 } 4983 4984 static void 4985 ztest_walk_pool_directory(char *header) 4986 { 4987 spa_t *spa = NULL; 4988 4989 if (ztest_opts.zo_verbose >= 6) 4990 (void) printf("%s\n", header); 4991 4992 mutex_enter(&spa_namespace_lock); 4993 while ((spa = spa_next(spa)) != NULL) 4994 if (ztest_opts.zo_verbose >= 6) 4995 (void) printf("\t%s\n", spa_name(spa)); 4996 mutex_exit(&spa_namespace_lock); 4997 } 4998 4999 static void 5000 ztest_spa_import_export(char *oldname, char *newname) 5001 { 5002 nvlist_t *config, *newconfig; 5003 uint64_t pool_guid; 5004 spa_t *spa; 5005 5006 if (ztest_opts.zo_verbose >= 4) { 5007 (void) printf("import/export: old = %s, new = %s\n", 5008 oldname, newname); 5009 } 5010 5011 /* 5012 * Clean up from previous runs. 5013 */ 5014 (void) spa_destroy(newname); 5015 5016 /* 5017 * Get the pool's configuration and guid. 5018 */ 5019 VERIFY3U(0, ==, spa_open(oldname, &spa, FTAG)); 5020 5021 /* 5022 * Kick off a scrub to tickle scrub/export races. 5023 */ 5024 if (ztest_random(2) == 0) 5025 (void) spa_scan(spa, POOL_SCAN_SCRUB); 5026 5027 pool_guid = spa_guid(spa); 5028 spa_close(spa, FTAG); 5029 5030 ztest_walk_pool_directory("pools before export"); 5031 5032 /* 5033 * Export it. 5034 */ 5035 VERIFY3U(0, ==, spa_export(oldname, &config, B_FALSE, B_FALSE)); 5036 5037 ztest_walk_pool_directory("pools after export"); 5038 5039 /* 5040 * Try to import it. 5041 */ 5042 newconfig = spa_tryimport(config); 5043 ASSERT(newconfig != NULL); 5044 nvlist_free(newconfig); 5045 5046 /* 5047 * Import it under the new name. 5048 */ 5049 VERIFY3U(0, ==, spa_import(newname, config, NULL, 0)); 5050 5051 ztest_walk_pool_directory("pools after import"); 5052 5053 /* 5054 * Try to import it again -- should fail with EEXIST. 5055 */ 5056 VERIFY3U(EEXIST, ==, spa_import(newname, config, NULL, 0)); 5057 5058 /* 5059 * Try to import it under a different name -- should fail with EEXIST. 5060 */ 5061 VERIFY3U(EEXIST, ==, spa_import(oldname, config, NULL, 0)); 5062 5063 /* 5064 * Verify that the pool is no longer visible under the old name. 5065 */ 5066 VERIFY3U(ENOENT, ==, spa_open(oldname, &spa, FTAG)); 5067 5068 /* 5069 * Verify that we can open and close the pool using the new name. 5070 */ 5071 VERIFY3U(0, ==, spa_open(newname, &spa, FTAG)); 5072 ASSERT(pool_guid == spa_guid(spa)); 5073 spa_close(spa, FTAG); 5074 5075 nvlist_free(config); 5076 } 5077 5078 static void 5079 ztest_resume(spa_t *spa) 5080 { 5081 if (spa_suspended(spa) && ztest_opts.zo_verbose >= 6) 5082 (void) printf("resuming from suspended state\n"); 5083 spa_vdev_state_enter(spa, SCL_NONE); 5084 vdev_clear(spa, NULL); 5085 (void) spa_vdev_state_exit(spa, NULL, 0); 5086 (void) zio_resume(spa); 5087 } 5088 5089 static void * 5090 ztest_resume_thread(void *arg) 5091 { 5092 spa_t *spa = arg; 5093 5094 while (!ztest_exiting) { 5095 if (spa_suspended(spa)) 5096 ztest_resume(spa); 5097 (void) poll(NULL, 0, 100); 5098 } 5099 return (NULL); 5100 } 5101 5102 static void * 5103 ztest_deadman_thread(void *arg) 5104 { 5105 ztest_shared_t *zs = arg; 5106 int grace = 300; 5107 hrtime_t delta; 5108 5109 delta = (zs->zs_thread_stop - zs->zs_thread_start) / NANOSEC + grace; 5110 5111 (void) poll(NULL, 0, (int)(1000 * delta)); 5112 5113 fatal(0, "failed to complete within %d seconds of deadline", grace); 5114 5115 return (NULL); 5116 } 5117 5118 static void 5119 ztest_execute(int test, ztest_info_t *zi, uint64_t id) 5120 { 5121 ztest_ds_t *zd = &ztest_ds[id % ztest_opts.zo_datasets]; 5122 ztest_shared_callstate_t *zc = ZTEST_GET_SHARED_CALLSTATE(test); 5123 hrtime_t functime = gethrtime(); 5124 5125 for (int i = 0; i < zi->zi_iters; i++) 5126 zi->zi_func(zd, id); 5127 5128 functime = gethrtime() - functime; 5129 5130 atomic_add_64(&zc->zc_count, 1); 5131 atomic_add_64(&zc->zc_time, functime); 5132 5133 if (ztest_opts.zo_verbose >= 4) { 5134 Dl_info dli; 5135 (void) dladdr((void *)zi->zi_func, &dli); 5136 (void) printf("%6.2f sec in %s\n", 5137 (double)functime / NANOSEC, dli.dli_sname); 5138 } 5139 } 5140 5141 static void * 5142 ztest_thread(void *arg) 5143 { 5144 int rand; 5145 uint64_t id = (uintptr_t)arg; 5146 ztest_shared_t *zs = ztest_shared; 5147 uint64_t call_next; 5148 hrtime_t now; 5149 ztest_info_t *zi; 5150 ztest_shared_callstate_t *zc; 5151 5152 while ((now = gethrtime()) < zs->zs_thread_stop) { 5153 /* 5154 * See if it's time to force a crash. 5155 */ 5156 if (now > zs->zs_thread_kill) 5157 ztest_kill(zs); 5158 5159 /* 5160 * If we're getting ENOSPC with some regularity, stop. 5161 */ 5162 if (zs->zs_enospc_count > 10) 5163 break; 5164 5165 /* 5166 * Pick a random function to execute. 5167 */ 5168 rand = ztest_random(ZTEST_FUNCS); 5169 zi = &ztest_info[rand]; 5170 zc = ZTEST_GET_SHARED_CALLSTATE(rand); 5171 call_next = zc->zc_next; 5172 5173 if (now >= call_next && 5174 atomic_cas_64(&zc->zc_next, call_next, call_next + 5175 ztest_random(2 * zi->zi_interval[0] + 1)) == call_next) { 5176 ztest_execute(rand, zi, id); 5177 } 5178 } 5179 5180 return (NULL); 5181 } 5182 5183 static void 5184 ztest_dataset_name(char *dsname, char *pool, int d) 5185 { 5186 (void) snprintf(dsname, MAXNAMELEN, "%s/ds_%d", pool, d); 5187 } 5188 5189 static void 5190 ztest_dataset_destroy(int d) 5191 { 5192 char name[MAXNAMELEN]; 5193 5194 ztest_dataset_name(name, ztest_opts.zo_pool, d); 5195 5196 if (ztest_opts.zo_verbose >= 3) 5197 (void) printf("Destroying %s to free up space\n", name); 5198 5199 /* 5200 * Cleanup any non-standard clones and snapshots. In general, 5201 * ztest thread t operates on dataset (t % zopt_datasets), 5202 * so there may be more than one thing to clean up. 5203 */ 5204 for (int t = d; t < ztest_opts.zo_threads; 5205 t += ztest_opts.zo_datasets) { 5206 ztest_dsl_dataset_cleanup(name, t); 5207 } 5208 5209 (void) dmu_objset_find(name, ztest_objset_destroy_cb, NULL, 5210 DS_FIND_SNAPSHOTS | DS_FIND_CHILDREN); 5211 } 5212 5213 static void 5214 ztest_dataset_dirobj_verify(ztest_ds_t *zd) 5215 { 5216 uint64_t usedobjs, dirobjs, scratch; 5217 5218 /* 5219 * ZTEST_DIROBJ is the object directory for the entire dataset. 5220 * Therefore, the number of objects in use should equal the 5221 * number of ZTEST_DIROBJ entries, +1 for ZTEST_DIROBJ itself. 5222 * If not, we have an object leak. 5223 * 5224 * Note that we can only check this in ztest_dataset_open(), 5225 * when the open-context and syncing-context values agree. 5226 * That's because zap_count() returns the open-context value, 5227 * while dmu_objset_space() returns the rootbp fill count. 5228 */ 5229 VERIFY3U(0, ==, zap_count(zd->zd_os, ZTEST_DIROBJ, &dirobjs)); 5230 dmu_objset_space(zd->zd_os, &scratch, &scratch, &usedobjs, &scratch); 5231 ASSERT3U(dirobjs + 1, ==, usedobjs); 5232 } 5233 5234 static int 5235 ztest_dataset_open(int d) 5236 { 5237 ztest_ds_t *zd = &ztest_ds[d]; 5238 uint64_t committed_seq = ZTEST_GET_SHARED_DS(d)->zd_seq; 5239 objset_t *os; 5240 zilog_t *zilog; 5241 char name[MAXNAMELEN]; 5242 int error; 5243 5244 ztest_dataset_name(name, ztest_opts.zo_pool, d); 5245 5246 (void) rw_rdlock(&ztest_name_lock); 5247 5248 error = ztest_dataset_create(name); 5249 if (error == ENOSPC) { 5250 (void) rw_unlock(&ztest_name_lock); 5251 ztest_record_enospc(FTAG); 5252 return (error); 5253 } 5254 ASSERT(error == 0 || error == EEXIST); 5255 5256 VERIFY3U(dmu_objset_hold(name, zd, &os), ==, 0); 5257 (void) rw_unlock(&ztest_name_lock); 5258 5259 ztest_zd_init(zd, ZTEST_GET_SHARED_DS(d), os); 5260 5261 zilog = zd->zd_zilog; 5262 5263 if (zilog->zl_header->zh_claim_lr_seq != 0 && 5264 zilog->zl_header->zh_claim_lr_seq < committed_seq) 5265 fatal(0, "missing log records: claimed %llu < committed %llu", 5266 zilog->zl_header->zh_claim_lr_seq, committed_seq); 5267 5268 ztest_dataset_dirobj_verify(zd); 5269 5270 zil_replay(os, zd, ztest_replay_vector); 5271 5272 ztest_dataset_dirobj_verify(zd); 5273 5274 if (ztest_opts.zo_verbose >= 6) 5275 (void) printf("%s replay %llu blocks, %llu records, seq %llu\n", 5276 zd->zd_name, 5277 (u_longlong_t)zilog->zl_parse_blk_count, 5278 (u_longlong_t)zilog->zl_parse_lr_count, 5279 (u_longlong_t)zilog->zl_replaying_seq); 5280 5281 zilog = zil_open(os, ztest_get_data); 5282 5283 if (zilog->zl_replaying_seq != 0 && 5284 zilog->zl_replaying_seq < committed_seq) 5285 fatal(0, "missing log records: replayed %llu < committed %llu", 5286 zilog->zl_replaying_seq, committed_seq); 5287 5288 return (0); 5289 } 5290 5291 static void 5292 ztest_dataset_close(int d) 5293 { 5294 ztest_ds_t *zd = &ztest_ds[d]; 5295 5296 zil_close(zd->zd_zilog); 5297 dmu_objset_rele(zd->zd_os, zd); 5298 5299 ztest_zd_fini(zd); 5300 } 5301 5302 /* 5303 * Kick off threads to run tests on all datasets in parallel. 5304 */ 5305 static void 5306 ztest_run(ztest_shared_t *zs) 5307 { 5308 thread_t *tid; 5309 spa_t *spa; 5310 objset_t *os; 5311 thread_t resume_tid; 5312 int error; 5313 5314 ztest_exiting = B_FALSE; 5315 5316 /* 5317 * Initialize parent/child shared state. 5318 */ 5319 VERIFY(_mutex_init(&ztest_vdev_lock, USYNC_THREAD, NULL) == 0); 5320 VERIFY(rwlock_init(&ztest_name_lock, USYNC_THREAD, NULL) == 0); 5321 5322 zs->zs_thread_start = gethrtime(); 5323 zs->zs_thread_stop = 5324 zs->zs_thread_start + ztest_opts.zo_passtime * NANOSEC; 5325 zs->zs_thread_stop = MIN(zs->zs_thread_stop, zs->zs_proc_stop); 5326 zs->zs_thread_kill = zs->zs_thread_stop; 5327 if (ztest_random(100) < ztest_opts.zo_killrate) { 5328 zs->zs_thread_kill -= 5329 ztest_random(ztest_opts.zo_passtime * NANOSEC); 5330 } 5331 5332 (void) _mutex_init(&zcl.zcl_callbacks_lock, USYNC_THREAD, NULL); 5333 5334 list_create(&zcl.zcl_callbacks, sizeof (ztest_cb_data_t), 5335 offsetof(ztest_cb_data_t, zcd_node)); 5336 5337 /* 5338 * Open our pool. 5339 */ 5340 kernel_init(FREAD | FWRITE); 5341 VERIFY(spa_open(ztest_opts.zo_pool, &spa, FTAG) == 0); 5342 spa->spa_debug = B_TRUE; 5343 ztest_spa = spa; 5344 5345 VERIFY3U(0, ==, dmu_objset_hold(ztest_opts.zo_pool, FTAG, &os)); 5346 zs->zs_guid = dmu_objset_fsid_guid(os); 5347 dmu_objset_rele(os, FTAG); 5348 5349 spa->spa_dedup_ditto = 2 * ZIO_DEDUPDITTO_MIN; 5350 5351 /* 5352 * We don't expect the pool to suspend unless maxfaults == 0, 5353 * in which case ztest_fault_inject() temporarily takes away 5354 * the only valid replica. 5355 */ 5356 if (MAXFAULTS() == 0) 5357 spa->spa_failmode = ZIO_FAILURE_MODE_WAIT; 5358 else 5359 spa->spa_failmode = ZIO_FAILURE_MODE_PANIC; 5360 5361 /* 5362 * Create a thread to periodically resume suspended I/O. 5363 */ 5364 VERIFY(thr_create(0, 0, ztest_resume_thread, spa, THR_BOUND, 5365 &resume_tid) == 0); 5366 5367 /* 5368 * Create a deadman thread to abort() if we hang. 5369 */ 5370 VERIFY(thr_create(0, 0, ztest_deadman_thread, zs, THR_BOUND, 5371 NULL) == 0); 5372 5373 /* 5374 * Verify that we can safely inquire about about any object, 5375 * whether it's allocated or not. To make it interesting, 5376 * we probe a 5-wide window around each power of two. 5377 * This hits all edge cases, including zero and the max. 5378 */ 5379 for (int t = 0; t < 64; t++) { 5380 for (int d = -5; d <= 5; d++) { 5381 error = dmu_object_info(spa->spa_meta_objset, 5382 (1ULL << t) + d, NULL); 5383 ASSERT(error == 0 || error == ENOENT || 5384 error == EINVAL); 5385 } 5386 } 5387 5388 /* 5389 * If we got any ENOSPC errors on the previous run, destroy something. 5390 */ 5391 if (zs->zs_enospc_count != 0) { 5392 int d = ztest_random(ztest_opts.zo_datasets); 5393 ztest_dataset_destroy(d); 5394 } 5395 zs->zs_enospc_count = 0; 5396 5397 tid = umem_zalloc(ztest_opts.zo_threads * sizeof (thread_t), 5398 UMEM_NOFAIL); 5399 5400 if (ztest_opts.zo_verbose >= 4) 5401 (void) printf("starting main threads...\n"); 5402 5403 /* 5404 * Kick off all the tests that run in parallel. 5405 */ 5406 for (int t = 0; t < ztest_opts.zo_threads; t++) { 5407 if (t < ztest_opts.zo_datasets && 5408 ztest_dataset_open(t) != 0) 5409 return; 5410 VERIFY(thr_create(0, 0, ztest_thread, (void *)(uintptr_t)t, 5411 THR_BOUND, &tid[t]) == 0); 5412 } 5413 5414 /* 5415 * Wait for all of the tests to complete. We go in reverse order 5416 * so we don't close datasets while threads are still using them. 5417 */ 5418 for (int t = ztest_opts.zo_threads - 1; t >= 0; t--) { 5419 VERIFY(thr_join(tid[t], NULL, NULL) == 0); 5420 if (t < ztest_opts.zo_datasets) 5421 ztest_dataset_close(t); 5422 } 5423 5424 txg_wait_synced(spa_get_dsl(spa), 0); 5425 5426 zs->zs_alloc = metaslab_class_get_alloc(spa_normal_class(spa)); 5427 zs->zs_space = metaslab_class_get_space(spa_normal_class(spa)); 5428 5429 umem_free(tid, ztest_opts.zo_threads * sizeof (thread_t)); 5430 5431 /* Kill the resume thread */ 5432 ztest_exiting = B_TRUE; 5433 VERIFY(thr_join(resume_tid, NULL, NULL) == 0); 5434 ztest_resume(spa); 5435 5436 /* 5437 * Right before closing the pool, kick off a bunch of async I/O; 5438 * spa_close() should wait for it to complete. 5439 */ 5440 for (uint64_t object = 1; object < 50; object++) 5441 dmu_prefetch(spa->spa_meta_objset, object, 0, 1ULL << 20); 5442 5443 spa_close(spa, FTAG); 5444 5445 /* 5446 * Verify that we can loop over all pools. 5447 */ 5448 mutex_enter(&spa_namespace_lock); 5449 for (spa = spa_next(NULL); spa != NULL; spa = spa_next(spa)) 5450 if (ztest_opts.zo_verbose > 3) 5451 (void) printf("spa_next: found %s\n", spa_name(spa)); 5452 mutex_exit(&spa_namespace_lock); 5453 5454 /* 5455 * Verify that we can export the pool and reimport it under a 5456 * different name. 5457 */ 5458 if (ztest_random(2) == 0) { 5459 char name[MAXNAMELEN]; 5460 (void) snprintf(name, MAXNAMELEN, "%s_import", 5461 ztest_opts.zo_pool); 5462 ztest_spa_import_export(ztest_opts.zo_pool, name); 5463 ztest_spa_import_export(name, ztest_opts.zo_pool); 5464 } 5465 5466 kernel_fini(); 5467 5468 list_destroy(&zcl.zcl_callbacks); 5469 5470 (void) _mutex_destroy(&zcl.zcl_callbacks_lock); 5471 5472 (void) rwlock_destroy(&ztest_name_lock); 5473 (void) _mutex_destroy(&ztest_vdev_lock); 5474 } 5475 5476 static void 5477 ztest_freeze(void) 5478 { 5479 ztest_ds_t *zd = &ztest_ds[0]; 5480 spa_t *spa; 5481 int numloops = 0; 5482 5483 if (ztest_opts.zo_verbose >= 3) 5484 (void) printf("testing spa_freeze()...\n"); 5485 5486 kernel_init(FREAD | FWRITE); 5487 VERIFY3U(0, ==, spa_open(ztest_opts.zo_pool, &spa, FTAG)); 5488 VERIFY3U(0, ==, ztest_dataset_open(0)); 5489 5490 /* 5491 * Force the first log block to be transactionally allocated. 5492 * We have to do this before we freeze the pool -- otherwise 5493 * the log chain won't be anchored. 5494 */ 5495 while (BP_IS_HOLE(&zd->zd_zilog->zl_header->zh_log)) { 5496 ztest_dmu_object_alloc_free(zd, 0); 5497 zil_commit(zd->zd_zilog, 0); 5498 } 5499 5500 txg_wait_synced(spa_get_dsl(spa), 0); 5501 5502 /* 5503 * Freeze the pool. This stops spa_sync() from doing anything, 5504 * so that the only way to record changes from now on is the ZIL. 5505 */ 5506 spa_freeze(spa); 5507 5508 /* 5509 * Run tests that generate log records but don't alter the pool config 5510 * or depend on DSL sync tasks (snapshots, objset create/destroy, etc). 5511 * We do a txg_wait_synced() after each iteration to force the txg 5512 * to increase well beyond the last synced value in the uberblock. 5513 * The ZIL should be OK with that. 5514 */ 5515 while (ztest_random(10) != 0 && 5516 numloops++ < ztest_opts.zo_maxloops) { 5517 ztest_dmu_write_parallel(zd, 0); 5518 ztest_dmu_object_alloc_free(zd, 0); 5519 txg_wait_synced(spa_get_dsl(spa), 0); 5520 } 5521 5522 /* 5523 * Commit all of the changes we just generated. 5524 */ 5525 zil_commit(zd->zd_zilog, 0); 5526 txg_wait_synced(spa_get_dsl(spa), 0); 5527 5528 /* 5529 * Close our dataset and close the pool. 5530 */ 5531 ztest_dataset_close(0); 5532 spa_close(spa, FTAG); 5533 kernel_fini(); 5534 5535 /* 5536 * Open and close the pool and dataset to induce log replay. 5537 */ 5538 kernel_init(FREAD | FWRITE); 5539 VERIFY3U(0, ==, spa_open(ztest_opts.zo_pool, &spa, FTAG)); 5540 VERIFY3U(0, ==, ztest_dataset_open(0)); 5541 ztest_dataset_close(0); 5542 spa_close(spa, FTAG); 5543 kernel_fini(); 5544 } 5545 5546 void 5547 print_time(hrtime_t t, char *timebuf) 5548 { 5549 hrtime_t s = t / NANOSEC; 5550 hrtime_t m = s / 60; 5551 hrtime_t h = m / 60; 5552 hrtime_t d = h / 24; 5553 5554 s -= m * 60; 5555 m -= h * 60; 5556 h -= d * 24; 5557 5558 timebuf[0] = '\0'; 5559 5560 if (d) 5561 (void) sprintf(timebuf, 5562 "%llud%02lluh%02llum%02llus", d, h, m, s); 5563 else if (h) 5564 (void) sprintf(timebuf, "%lluh%02llum%02llus", h, m, s); 5565 else if (m) 5566 (void) sprintf(timebuf, "%llum%02llus", m, s); 5567 else 5568 (void) sprintf(timebuf, "%llus", s); 5569 } 5570 5571 static nvlist_t * 5572 make_random_props() 5573 { 5574 nvlist_t *props; 5575 5576 VERIFY(nvlist_alloc(&props, NV_UNIQUE_NAME, 0) == 0); 5577 if (ztest_random(2) == 0) 5578 return (props); 5579 VERIFY(nvlist_add_uint64(props, "autoreplace", 1) == 0); 5580 5581 return (props); 5582 } 5583 5584 /* 5585 * Create a storage pool with the given name and initial vdev size. 5586 * Then test spa_freeze() functionality. 5587 */ 5588 static void 5589 ztest_init(ztest_shared_t *zs) 5590 { 5591 spa_t *spa; 5592 nvlist_t *nvroot, *props; 5593 5594 VERIFY(_mutex_init(&ztest_vdev_lock, USYNC_THREAD, NULL) == 0); 5595 VERIFY(rwlock_init(&ztest_name_lock, USYNC_THREAD, NULL) == 0); 5596 5597 kernel_init(FREAD | FWRITE); 5598 5599 /* 5600 * Create the storage pool. 5601 */ 5602 (void) spa_destroy(ztest_opts.zo_pool); 5603 ztest_shared->zs_vdev_next_leaf = 0; 5604 zs->zs_splits = 0; 5605 zs->zs_mirrors = ztest_opts.zo_mirrors; 5606 nvroot = make_vdev_root(NULL, NULL, ztest_opts.zo_vdev_size, 0, 5607 0, ztest_opts.zo_raidz, zs->zs_mirrors, 1); 5608 props = make_random_props(); 5609 for (int i = 0; i < SPA_FEATURES; i++) { 5610 char buf[1024]; 5611 (void) snprintf(buf, sizeof (buf), "feature@%s", 5612 spa_feature_table[i].fi_uname); 5613 VERIFY3U(0, ==, nvlist_add_uint64(props, buf, 0)); 5614 } 5615 VERIFY3U(0, ==, spa_create(ztest_opts.zo_pool, nvroot, props, 5616 NULL, NULL)); 5617 nvlist_free(nvroot); 5618 5619 VERIFY3U(0, ==, spa_open(ztest_opts.zo_pool, &spa, FTAG)); 5620 zs->zs_metaslab_sz = 5621 1ULL << spa->spa_root_vdev->vdev_child[0]->vdev_ms_shift; 5622 5623 spa_close(spa, FTAG); 5624 5625 kernel_fini(); 5626 5627 ztest_run_zdb(ztest_opts.zo_pool); 5628 5629 ztest_freeze(); 5630 5631 ztest_run_zdb(ztest_opts.zo_pool); 5632 5633 (void) rwlock_destroy(&ztest_name_lock); 5634 (void) _mutex_destroy(&ztest_vdev_lock); 5635 } 5636 5637 static void 5638 setup_fds(void) 5639 { 5640 int fd; 5641 5642 char *tmp = tempnam(NULL, NULL); 5643 fd = open(tmp, O_RDWR | O_CREAT, 0700); 5644 ASSERT3U(fd, ==, ZTEST_FD_DATA); 5645 (void) unlink(tmp); 5646 free(tmp); 5647 5648 fd = open("/dev/urandom", O_RDONLY); 5649 ASSERT3U(fd, ==, ZTEST_FD_RAND); 5650 } 5651 5652 static int 5653 shared_data_size(ztest_shared_hdr_t *hdr) 5654 { 5655 int size; 5656 5657 size = hdr->zh_hdr_size; 5658 size += hdr->zh_opts_size; 5659 size += hdr->zh_size; 5660 size += hdr->zh_stats_size * hdr->zh_stats_count; 5661 size += hdr->zh_ds_size * hdr->zh_ds_count; 5662 5663 return (size); 5664 } 5665 5666 static void 5667 setup_hdr(void) 5668 { 5669 int size; 5670 ztest_shared_hdr_t *hdr; 5671 5672 hdr = (void *)mmap(0, P2ROUNDUP(sizeof (*hdr), getpagesize()), 5673 PROT_READ | PROT_WRITE, MAP_SHARED, ZTEST_FD_DATA, 0); 5674 ASSERT(hdr != MAP_FAILED); 5675 5676 VERIFY3U(0, ==, ftruncate(ZTEST_FD_DATA, sizeof (ztest_shared_hdr_t))); 5677 5678 hdr->zh_hdr_size = sizeof (ztest_shared_hdr_t); 5679 hdr->zh_opts_size = sizeof (ztest_shared_opts_t); 5680 hdr->zh_size = sizeof (ztest_shared_t); 5681 hdr->zh_stats_size = sizeof (ztest_shared_callstate_t); 5682 hdr->zh_stats_count = ZTEST_FUNCS; 5683 hdr->zh_ds_size = sizeof (ztest_shared_ds_t); 5684 hdr->zh_ds_count = ztest_opts.zo_datasets; 5685 5686 size = shared_data_size(hdr); 5687 VERIFY3U(0, ==, ftruncate(ZTEST_FD_DATA, size)); 5688 5689 (void) munmap((caddr_t)hdr, P2ROUNDUP(sizeof (*hdr), getpagesize())); 5690 } 5691 5692 static void 5693 setup_data(void) 5694 { 5695 int size, offset; 5696 ztest_shared_hdr_t *hdr; 5697 uint8_t *buf; 5698 5699 hdr = (void *)mmap(0, P2ROUNDUP(sizeof (*hdr), getpagesize()), 5700 PROT_READ, MAP_SHARED, ZTEST_FD_DATA, 0); 5701 ASSERT(hdr != MAP_FAILED); 5702 5703 size = shared_data_size(hdr); 5704 5705 (void) munmap((caddr_t)hdr, P2ROUNDUP(sizeof (*hdr), getpagesize())); 5706 hdr = ztest_shared_hdr = (void *)mmap(0, P2ROUNDUP(size, getpagesize()), 5707 PROT_READ | PROT_WRITE, MAP_SHARED, ZTEST_FD_DATA, 0); 5708 ASSERT(hdr != MAP_FAILED); 5709 buf = (uint8_t *)hdr; 5710 5711 offset = hdr->zh_hdr_size; 5712 ztest_shared_opts = (void *)&buf[offset]; 5713 offset += hdr->zh_opts_size; 5714 ztest_shared = (void *)&buf[offset]; 5715 offset += hdr->zh_size; 5716 ztest_shared_callstate = (void *)&buf[offset]; 5717 offset += hdr->zh_stats_size * hdr->zh_stats_count; 5718 ztest_shared_ds = (void *)&buf[offset]; 5719 } 5720 5721 static boolean_t 5722 exec_child(char *cmd, char *libpath, boolean_t ignorekill, int *statusp) 5723 { 5724 pid_t pid; 5725 int status; 5726 char cmdbuf[MAXPATHLEN]; 5727 5728 pid = fork(); 5729 5730 if (cmd == NULL) { 5731 (void) strlcpy(cmdbuf, getexecname(), sizeof (cmdbuf)); 5732 cmd = cmdbuf; 5733 } 5734 5735 if (pid == -1) 5736 fatal(1, "fork failed"); 5737 5738 if (pid == 0) { /* child */ 5739 char *emptyargv[2] = { cmd, NULL }; 5740 5741 struct rlimit rl = { 1024, 1024 }; 5742 (void) setrlimit(RLIMIT_NOFILE, &rl); 5743 (void) enable_extended_FILE_stdio(-1, -1); 5744 if (libpath != NULL) 5745 VERIFY(0 == setenv("LD_LIBRARY_PATH", libpath, 1)); 5746 (void) execv(cmd, emptyargv); 5747 ztest_dump_core = B_FALSE; 5748 fatal(B_TRUE, "exec failed: %s", cmd); 5749 } 5750 5751 while (waitpid(pid, &status, 0) != pid) 5752 continue; 5753 if (statusp != NULL) 5754 *statusp = status; 5755 5756 if (WIFEXITED(status)) { 5757 if (WEXITSTATUS(status) != 0) { 5758 (void) fprintf(stderr, "child exited with code %d\n", 5759 WEXITSTATUS(status)); 5760 exit(2); 5761 } 5762 return (B_FALSE); 5763 } else if (WIFSIGNALED(status)) { 5764 if (!ignorekill || WTERMSIG(status) != SIGKILL) { 5765 (void) fprintf(stderr, "child died with signal %d\n", 5766 WTERMSIG(status)); 5767 exit(3); 5768 } 5769 return (B_TRUE); 5770 } else { 5771 (void) fprintf(stderr, "something strange happened to child\n"); 5772 exit(4); 5773 /* NOTREACHED */ 5774 } 5775 } 5776 5777 static void 5778 ztest_run_init(void) 5779 { 5780 ztest_shared_t *zs = ztest_shared; 5781 5782 ASSERT(ztest_opts.zo_init != 0); 5783 5784 /* 5785 * Blow away any existing copy of zpool.cache 5786 */ 5787 (void) remove(spa_config_path); 5788 5789 /* 5790 * Create and initialize our storage pool. 5791 */ 5792 for (int i = 1; i <= ztest_opts.zo_init; i++) { 5793 bzero(zs, sizeof (ztest_shared_t)); 5794 if (ztest_opts.zo_verbose >= 3 && 5795 ztest_opts.zo_init != 1) { 5796 (void) printf("ztest_init(), pass %d\n", i); 5797 } 5798 ztest_init(zs); 5799 } 5800 } 5801 5802 int 5803 main(int argc, char **argv) 5804 { 5805 int kills = 0; 5806 int iters = 0; 5807 int older = 0; 5808 int newer = 0; 5809 ztest_shared_t *zs; 5810 ztest_info_t *zi; 5811 ztest_shared_callstate_t *zc; 5812 char timebuf[100]; 5813 char numbuf[6]; 5814 spa_t *spa; 5815 char cmd[MAXNAMELEN]; 5816 boolean_t hasalt; 5817 5818 boolean_t ischild = (0 == lseek(ZTEST_FD_DATA, 0, SEEK_CUR)); 5819 ASSERT(ischild || errno == EBADF); 5820 5821 (void) setvbuf(stdout, NULL, _IOLBF, 0); 5822 5823 if (!ischild) { 5824 process_options(argc, argv); 5825 5826 setup_fds(); 5827 setup_hdr(); 5828 setup_data(); 5829 bcopy(&ztest_opts, ztest_shared_opts, 5830 sizeof (*ztest_shared_opts)); 5831 } else { 5832 setup_data(); 5833 bcopy(ztest_shared_opts, &ztest_opts, sizeof (ztest_opts)); 5834 } 5835 ASSERT3U(ztest_opts.zo_datasets, ==, ztest_shared_hdr->zh_ds_count); 5836 5837 /* Override location of zpool.cache */ 5838 (void) asprintf((char **)&spa_config_path, "%s/zpool.cache", 5839 ztest_opts.zo_dir); 5840 5841 ztest_ds = umem_alloc(ztest_opts.zo_datasets * sizeof (ztest_ds_t), 5842 UMEM_NOFAIL); 5843 zs = ztest_shared; 5844 5845 if (ischild) { 5846 metaslab_gang_bang = ztest_opts.zo_metaslab_gang_bang; 5847 metaslab_df_alloc_threshold = 5848 zs->zs_metaslab_df_alloc_threshold; 5849 5850 if (zs->zs_do_init) 5851 ztest_run_init(); 5852 else 5853 ztest_run(zs); 5854 exit(0); 5855 } 5856 5857 hasalt = (strlen(ztest_opts.zo_alt_ztest) != 0); 5858 5859 if (ztest_opts.zo_verbose >= 1) { 5860 (void) printf("%llu vdevs, %d datasets, %d threads," 5861 " %llu seconds...\n", 5862 (u_longlong_t)ztest_opts.zo_vdevs, 5863 ztest_opts.zo_datasets, 5864 ztest_opts.zo_threads, 5865 (u_longlong_t)ztest_opts.zo_time); 5866 } 5867 5868 (void) strlcpy(cmd, getexecname(), sizeof (cmd)); 5869 5870 zs->zs_do_init = B_TRUE; 5871 if (strlen(ztest_opts.zo_alt_ztest) != 0) { 5872 if (ztest_opts.zo_verbose >= 1) { 5873 (void) printf("Executing older ztest for " 5874 "initialization: %s\n", ztest_opts.zo_alt_ztest); 5875 } 5876 VERIFY(!exec_child(ztest_opts.zo_alt_ztest, 5877 ztest_opts.zo_alt_libpath, B_FALSE, NULL)); 5878 } else { 5879 VERIFY(!exec_child(NULL, NULL, B_FALSE, NULL)); 5880 } 5881 zs->zs_do_init = B_FALSE; 5882 5883 zs->zs_proc_start = gethrtime(); 5884 zs->zs_proc_stop = zs->zs_proc_start + ztest_opts.zo_time * NANOSEC; 5885 5886 for (int f = 0; f < ZTEST_FUNCS; f++) { 5887 zi = &ztest_info[f]; 5888 zc = ZTEST_GET_SHARED_CALLSTATE(f); 5889 if (zs->zs_proc_start + zi->zi_interval[0] > zs->zs_proc_stop) 5890 zc->zc_next = UINT64_MAX; 5891 else 5892 zc->zc_next = zs->zs_proc_start + 5893 ztest_random(2 * zi->zi_interval[0] + 1); 5894 } 5895 5896 /* 5897 * Run the tests in a loop. These tests include fault injection 5898 * to verify that self-healing data works, and forced crashes 5899 * to verify that we never lose on-disk consistency. 5900 */ 5901 while (gethrtime() < zs->zs_proc_stop) { 5902 int status; 5903 boolean_t killed; 5904 5905 /* 5906 * Initialize the workload counters for each function. 5907 */ 5908 for (int f = 0; f < ZTEST_FUNCS; f++) { 5909 zc = ZTEST_GET_SHARED_CALLSTATE(f); 5910 zc->zc_count = 0; 5911 zc->zc_time = 0; 5912 } 5913 5914 /* Set the allocation switch size */ 5915 zs->zs_metaslab_df_alloc_threshold = 5916 ztest_random(zs->zs_metaslab_sz / 4) + 1; 5917 5918 if (!hasalt || ztest_random(2) == 0) { 5919 if (hasalt && ztest_opts.zo_verbose >= 1) { 5920 (void) printf("Executing newer ztest: %s\n", 5921 cmd); 5922 } 5923 newer++; 5924 killed = exec_child(cmd, NULL, B_TRUE, &status); 5925 } else { 5926 if (hasalt && ztest_opts.zo_verbose >= 1) { 5927 (void) printf("Executing older ztest: %s\n", 5928 ztest_opts.zo_alt_ztest); 5929 } 5930 older++; 5931 killed = exec_child(ztest_opts.zo_alt_ztest, 5932 ztest_opts.zo_alt_libpath, B_TRUE, &status); 5933 } 5934 5935 if (killed) 5936 kills++; 5937 iters++; 5938 5939 if (ztest_opts.zo_verbose >= 1) { 5940 hrtime_t now = gethrtime(); 5941 5942 now = MIN(now, zs->zs_proc_stop); 5943 print_time(zs->zs_proc_stop - now, timebuf); 5944 nicenum(zs->zs_space, numbuf); 5945 5946 (void) printf("Pass %3d, %8s, %3llu ENOSPC, " 5947 "%4.1f%% of %5s used, %3.0f%% done, %8s to go\n", 5948 iters, 5949 WIFEXITED(status) ? "Complete" : "SIGKILL", 5950 (u_longlong_t)zs->zs_enospc_count, 5951 100.0 * zs->zs_alloc / zs->zs_space, 5952 numbuf, 5953 100.0 * (now - zs->zs_proc_start) / 5954 (ztest_opts.zo_time * NANOSEC), timebuf); 5955 } 5956 5957 if (ztest_opts.zo_verbose >= 2) { 5958 (void) printf("\nWorkload summary:\n\n"); 5959 (void) printf("%7s %9s %s\n", 5960 "Calls", "Time", "Function"); 5961 (void) printf("%7s %9s %s\n", 5962 "-----", "----", "--------"); 5963 for (int f = 0; f < ZTEST_FUNCS; f++) { 5964 Dl_info dli; 5965 5966 zi = &ztest_info[f]; 5967 zc = ZTEST_GET_SHARED_CALLSTATE(f); 5968 print_time(zc->zc_time, timebuf); 5969 (void) dladdr((void *)zi->zi_func, &dli); 5970 (void) printf("%7llu %9s %s\n", 5971 (u_longlong_t)zc->zc_count, timebuf, 5972 dli.dli_sname); 5973 } 5974 (void) printf("\n"); 5975 } 5976 5977 /* 5978 * It's possible that we killed a child during a rename test, 5979 * in which case we'll have a 'ztest_tmp' pool lying around 5980 * instead of 'ztest'. Do a blind rename in case this happened. 5981 */ 5982 kernel_init(FREAD); 5983 if (spa_open(ztest_opts.zo_pool, &spa, FTAG) == 0) { 5984 spa_close(spa, FTAG); 5985 } else { 5986 char tmpname[MAXNAMELEN]; 5987 kernel_fini(); 5988 kernel_init(FREAD | FWRITE); 5989 (void) snprintf(tmpname, sizeof (tmpname), "%s_tmp", 5990 ztest_opts.zo_pool); 5991 (void) spa_rename(tmpname, ztest_opts.zo_pool); 5992 } 5993 kernel_fini(); 5994 5995 ztest_run_zdb(ztest_opts.zo_pool); 5996 } 5997 5998 if (ztest_opts.zo_verbose >= 1) { 5999 if (hasalt) { 6000 (void) printf("%d runs of older ztest: %s\n", older, 6001 ztest_opts.zo_alt_ztest); 6002 (void) printf("%d runs of newer ztest: %s\n", newer, 6003 cmd); 6004 } 6005 (void) printf("%d killed, %d completed, %.0f%% kill rate\n", 6006 kills, iters - kills, (100.0 * kills) / MAX(1, iters)); 6007 } 6008 6009 return (0); 6010 } 6011