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