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) 2011, 2016 by Delphix. All rights reserved. 24 * Copyright 2011 Nexenta Systems, Inc. All rights reserved. 25 * Copyright (c) 2013 Steven Hartland. All rights reserved. 26 */ 27 28 /* 29 * The objective of this program is to provide a DMU/ZAP/SPA stress test 30 * that runs entirely in userland, is easy to use, and easy to extend. 31 * 32 * The overall design of the ztest program is as follows: 33 * 34 * (1) For each major functional area (e.g. adding vdevs to a pool, 35 * creating and destroying datasets, reading and writing objects, etc) 36 * we have a simple routine to test that functionality. These 37 * individual routines do not have to do anything "stressful". 38 * 39 * (2) We turn these simple functionality tests into a stress test by 40 * running them all in parallel, with as many threads as desired, 41 * and spread across as many datasets, objects, and vdevs as desired. 42 * 43 * (3) While all this is happening, we inject faults into the pool to 44 * verify that self-healing data really works. 45 * 46 * (4) Every time we open a dataset, we change its checksum and compression 47 * functions. Thus even individual objects vary from block to block 48 * in which checksum they use and whether they're compressed. 49 * 50 * (5) To verify that we never lose on-disk consistency after a crash, 51 * we run the entire test in a child of the main process. 52 * At random times, the child self-immolates with a SIGKILL. 53 * This is the software equivalent of pulling the power cord. 54 * The parent then runs the test again, using the existing 55 * storage pool, as many times as desired. If backwards compatibility 56 * testing is enabled ztest will sometimes run the "older" version 57 * of ztest after a SIGKILL. 58 * 59 * (6) To verify that we don't have future leaks or temporal incursions, 60 * many of the functional tests record the transaction group number 61 * as part of their data. When reading old data, they verify that 62 * the transaction group number is less than the current, open txg. 63 * If you add a new test, please do this if applicable. 64 * 65 * When run with no arguments, ztest runs for about five minutes and 66 * produces no output if successful. To get a little bit of information, 67 * specify -V. To get more information, specify -VV, and so on. 68 * 69 * To turn this into an overnight stress test, use -T to specify run time. 70 * 71 * You can ask more more vdevs [-v], datasets [-d], or threads [-t] 72 * to increase the pool capacity, fanout, and overall stress level. 73 * 74 * Use the -k option to set the desired frequency of kills. 75 * 76 * When ztest invokes itself it passes all relevant information through a 77 * temporary file which is mmap-ed in the child process. This allows shared 78 * memory to survive the exec syscall. The ztest_shared_hdr_t struct is always 79 * stored at offset 0 of this file and contains information on the size and 80 * number of shared structures in the file. The information stored in this file 81 * must remain backwards compatible with older versions of ztest so that 82 * ztest can invoke them during backwards compatibility testing (-B). 83 */ 84 85 #include <sys/zfs_context.h> 86 #include <sys/spa.h> 87 #include <sys/dmu.h> 88 #include <sys/txg.h> 89 #include <sys/dbuf.h> 90 #include <sys/zap.h> 91 #include <sys/dmu_objset.h> 92 #include <sys/poll.h> 93 #include <sys/stat.h> 94 #include <sys/time.h> 95 #include <sys/wait.h> 96 #include <sys/mman.h> 97 #include <sys/resource.h> 98 #include <sys/zio.h> 99 #include <sys/zil.h> 100 #include <sys/zil_impl.h> 101 #include <sys/vdev_impl.h> 102 #include <sys/vdev_file.h> 103 #include <sys/spa_impl.h> 104 #include <sys/metaslab_impl.h> 105 #include <sys/dsl_prop.h> 106 #include <sys/dsl_dataset.h> 107 #include <sys/dsl_destroy.h> 108 #include <sys/dsl_scan.h> 109 #include <sys/zio_checksum.h> 110 #include <sys/refcount.h> 111 #include <sys/zfeature.h> 112 #include <sys/dsl_userhold.h> 113 #include <stdio.h> 114 #include <stdio_ext.h> 115 #include <stdlib.h> 116 #include <unistd.h> 117 #include <signal.h> 118 #include <umem.h> 119 #include <dlfcn.h> 120 #include <ctype.h> 121 #include <math.h> 122 #include <sys/fs/zfs.h> 123 #include <libnvpair.h> 124 125 static int ztest_fd_data = -1; 126 static int ztest_fd_rand = -1; 127 128 typedef struct ztest_shared_hdr { 129 uint64_t zh_hdr_size; 130 uint64_t zh_opts_size; 131 uint64_t zh_size; 132 uint64_t zh_stats_size; 133 uint64_t zh_stats_count; 134 uint64_t zh_ds_size; 135 uint64_t zh_ds_count; 136 } ztest_shared_hdr_t; 137 138 static ztest_shared_hdr_t *ztest_shared_hdr; 139 140 typedef struct ztest_shared_opts { 141 char zo_pool[ZFS_MAX_DATASET_NAME_LEN]; 142 char zo_dir[ZFS_MAX_DATASET_NAME_LEN]; 143 char zo_alt_ztest[MAXNAMELEN]; 144 char zo_alt_libpath[MAXNAMELEN]; 145 uint64_t zo_vdevs; 146 uint64_t zo_vdevtime; 147 size_t zo_vdev_size; 148 int zo_ashift; 149 int zo_mirrors; 150 int zo_raidz; 151 int zo_raidz_parity; 152 int zo_datasets; 153 int zo_threads; 154 uint64_t zo_passtime; 155 uint64_t zo_killrate; 156 int zo_verbose; 157 int zo_init; 158 uint64_t zo_time; 159 uint64_t zo_maxloops; 160 uint64_t zo_metaslab_gang_bang; 161 } ztest_shared_opts_t; 162 163 static const ztest_shared_opts_t ztest_opts_defaults = { 164 .zo_pool = { 'z', 't', 'e', 's', 't', '\0' }, 165 .zo_dir = { '/', 't', 'm', 'p', '\0' }, 166 .zo_alt_ztest = { '\0' }, 167 .zo_alt_libpath = { '\0' }, 168 .zo_vdevs = 5, 169 .zo_ashift = SPA_MINBLOCKSHIFT, 170 .zo_mirrors = 2, 171 .zo_raidz = 4, 172 .zo_raidz_parity = 1, 173 .zo_vdev_size = SPA_MINDEVSIZE * 2, 174 .zo_datasets = 7, 175 .zo_threads = 23, 176 .zo_passtime = 60, /* 60 seconds */ 177 .zo_killrate = 70, /* 70% kill rate */ 178 .zo_verbose = 0, 179 .zo_init = 1, 180 .zo_time = 300, /* 5 minutes */ 181 .zo_maxloops = 50, /* max loops during spa_freeze() */ 182 .zo_metaslab_gang_bang = 32 << 10 183 }; 184 185 extern uint64_t metaslab_gang_bang; 186 extern uint64_t metaslab_df_alloc_threshold; 187 extern uint64_t zfs_deadman_synctime_ms; 188 extern int metaslab_preload_limit; 189 190 static ztest_shared_opts_t *ztest_shared_opts; 191 static ztest_shared_opts_t ztest_opts; 192 193 typedef struct ztest_shared_ds { 194 uint64_t zd_seq; 195 } ztest_shared_ds_t; 196 197 static ztest_shared_ds_t *ztest_shared_ds; 198 #define ZTEST_GET_SHARED_DS(d) (&ztest_shared_ds[d]) 199 200 #define BT_MAGIC 0x123456789abcdefULL 201 #define MAXFAULTS() \ 202 (MAX(zs->zs_mirrors, 1) * (ztest_opts.zo_raidz_parity + 1) - 1) 203 204 enum ztest_io_type { 205 ZTEST_IO_WRITE_TAG, 206 ZTEST_IO_WRITE_PATTERN, 207 ZTEST_IO_WRITE_ZEROES, 208 ZTEST_IO_TRUNCATE, 209 ZTEST_IO_SETATTR, 210 ZTEST_IO_REWRITE, 211 ZTEST_IO_TYPES 212 }; 213 214 typedef struct ztest_block_tag { 215 uint64_t bt_magic; 216 uint64_t bt_objset; 217 uint64_t bt_object; 218 uint64_t bt_offset; 219 uint64_t bt_gen; 220 uint64_t bt_txg; 221 uint64_t bt_crtxg; 222 } ztest_block_tag_t; 223 224 typedef struct bufwad { 225 uint64_t bw_index; 226 uint64_t bw_txg; 227 uint64_t bw_data; 228 } bufwad_t; 229 230 /* 231 * XXX -- fix zfs range locks to be generic so we can use them here. 232 */ 233 typedef enum { 234 RL_READER, 235 RL_WRITER, 236 RL_APPEND 237 } rl_type_t; 238 239 typedef struct rll { 240 void *rll_writer; 241 int rll_readers; 242 mutex_t rll_lock; 243 cond_t rll_cv; 244 } rll_t; 245 246 typedef struct rl { 247 uint64_t rl_object; 248 uint64_t rl_offset; 249 uint64_t rl_size; 250 rll_t *rl_lock; 251 } rl_t; 252 253 #define ZTEST_RANGE_LOCKS 64 254 #define ZTEST_OBJECT_LOCKS 64 255 256 /* 257 * Object descriptor. Used as a template for object lookup/create/remove. 258 */ 259 typedef struct ztest_od { 260 uint64_t od_dir; 261 uint64_t od_object; 262 dmu_object_type_t od_type; 263 dmu_object_type_t od_crtype; 264 uint64_t od_blocksize; 265 uint64_t od_crblocksize; 266 uint64_t od_gen; 267 uint64_t od_crgen; 268 char od_name[ZFS_MAX_DATASET_NAME_LEN]; 269 } ztest_od_t; 270 271 /* 272 * Per-dataset state. 273 */ 274 typedef struct ztest_ds { 275 ztest_shared_ds_t *zd_shared; 276 objset_t *zd_os; 277 rwlock_t zd_zilog_lock; 278 zilog_t *zd_zilog; 279 ztest_od_t *zd_od; /* debugging aid */ 280 char zd_name[ZFS_MAX_DATASET_NAME_LEN]; 281 mutex_t zd_dirobj_lock; 282 rll_t zd_object_lock[ZTEST_OBJECT_LOCKS]; 283 rll_t zd_range_lock[ZTEST_RANGE_LOCKS]; 284 } ztest_ds_t; 285 286 /* 287 * Per-iteration state. 288 */ 289 typedef void ztest_func_t(ztest_ds_t *zd, uint64_t id); 290 291 typedef struct ztest_info { 292 ztest_func_t *zi_func; /* test function */ 293 uint64_t zi_iters; /* iterations per execution */ 294 uint64_t *zi_interval; /* execute every <interval> seconds */ 295 } ztest_info_t; 296 297 typedef struct ztest_shared_callstate { 298 uint64_t zc_count; /* per-pass count */ 299 uint64_t zc_time; /* per-pass time */ 300 uint64_t zc_next; /* next time to call this function */ 301 } ztest_shared_callstate_t; 302 303 static ztest_shared_callstate_t *ztest_shared_callstate; 304 #define ZTEST_GET_SHARED_CALLSTATE(c) (&ztest_shared_callstate[c]) 305 306 /* 307 * Note: these aren't static because we want dladdr() to work. 308 */ 309 ztest_func_t ztest_dmu_read_write; 310 ztest_func_t ztest_dmu_write_parallel; 311 ztest_func_t ztest_dmu_object_alloc_free; 312 ztest_func_t ztest_dmu_commit_callbacks; 313 ztest_func_t ztest_zap; 314 ztest_func_t ztest_zap_parallel; 315 ztest_func_t ztest_zil_commit; 316 ztest_func_t ztest_zil_remount; 317 ztest_func_t ztest_dmu_read_write_zcopy; 318 ztest_func_t ztest_dmu_objset_create_destroy; 319 ztest_func_t ztest_dmu_prealloc; 320 ztest_func_t ztest_fzap; 321 ztest_func_t ztest_dmu_snapshot_create_destroy; 322 ztest_func_t ztest_dsl_prop_get_set; 323 ztest_func_t ztest_spa_prop_get_set; 324 ztest_func_t ztest_spa_create_destroy; 325 ztest_func_t ztest_fault_inject; 326 ztest_func_t ztest_ddt_repair; 327 ztest_func_t ztest_dmu_snapshot_hold; 328 ztest_func_t ztest_spa_rename; 329 ztest_func_t ztest_scrub; 330 ztest_func_t ztest_dsl_dataset_promote_busy; 331 ztest_func_t ztest_vdev_attach_detach; 332 ztest_func_t ztest_vdev_LUN_growth; 333 ztest_func_t ztest_vdev_add_remove; 334 ztest_func_t ztest_vdev_aux_add_remove; 335 ztest_func_t ztest_split_pool; 336 ztest_func_t ztest_reguid; 337 ztest_func_t ztest_spa_upgrade; 338 339 uint64_t zopt_always = 0ULL * NANOSEC; /* all the time */ 340 uint64_t zopt_incessant = 1ULL * NANOSEC / 10; /* every 1/10 second */ 341 uint64_t zopt_often = 1ULL * NANOSEC; /* every second */ 342 uint64_t zopt_sometimes = 10ULL * NANOSEC; /* every 10 seconds */ 343 uint64_t zopt_rarely = 60ULL * NANOSEC; /* every 60 seconds */ 344 345 ztest_info_t ztest_info[] = { 346 { ztest_dmu_read_write, 1, &zopt_always }, 347 { ztest_dmu_write_parallel, 10, &zopt_always }, 348 { ztest_dmu_object_alloc_free, 1, &zopt_always }, 349 { ztest_dmu_commit_callbacks, 1, &zopt_always }, 350 { ztest_zap, 30, &zopt_always }, 351 { ztest_zap_parallel, 100, &zopt_always }, 352 { ztest_split_pool, 1, &zopt_always }, 353 { ztest_zil_commit, 1, &zopt_incessant }, 354 { ztest_zil_remount, 1, &zopt_sometimes }, 355 { ztest_dmu_read_write_zcopy, 1, &zopt_often }, 356 { ztest_dmu_objset_create_destroy, 1, &zopt_often }, 357 { ztest_dsl_prop_get_set, 1, &zopt_often }, 358 { ztest_spa_prop_get_set, 1, &zopt_sometimes }, 359 #if 0 360 { ztest_dmu_prealloc, 1, &zopt_sometimes }, 361 #endif 362 { ztest_fzap, 1, &zopt_sometimes }, 363 { ztest_dmu_snapshot_create_destroy, 1, &zopt_sometimes }, 364 { ztest_spa_create_destroy, 1, &zopt_sometimes }, 365 { ztest_fault_inject, 1, &zopt_sometimes }, 366 { ztest_ddt_repair, 1, &zopt_sometimes }, 367 { ztest_dmu_snapshot_hold, 1, &zopt_sometimes }, 368 { ztest_reguid, 1, &zopt_rarely }, 369 { ztest_spa_rename, 1, &zopt_rarely }, 370 { ztest_scrub, 1, &zopt_rarely }, 371 { ztest_spa_upgrade, 1, &zopt_rarely }, 372 { ztest_dsl_dataset_promote_busy, 1, &zopt_rarely }, 373 { ztest_vdev_attach_detach, 1, &zopt_sometimes }, 374 { ztest_vdev_LUN_growth, 1, &zopt_rarely }, 375 { ztest_vdev_add_remove, 1, 376 &ztest_opts.zo_vdevtime }, 377 { ztest_vdev_aux_add_remove, 1, 378 &ztest_opts.zo_vdevtime }, 379 }; 380 381 #define ZTEST_FUNCS (sizeof (ztest_info) / sizeof (ztest_info_t)) 382 383 /* 384 * The following struct is used to hold a list of uncalled commit callbacks. 385 * The callbacks are ordered by txg number. 386 */ 387 typedef struct ztest_cb_list { 388 mutex_t zcl_callbacks_lock; 389 list_t zcl_callbacks; 390 } ztest_cb_list_t; 391 392 /* 393 * Stuff we need to share writably between parent and child. 394 */ 395 typedef struct ztest_shared { 396 boolean_t zs_do_init; 397 hrtime_t zs_proc_start; 398 hrtime_t zs_proc_stop; 399 hrtime_t zs_thread_start; 400 hrtime_t zs_thread_stop; 401 hrtime_t zs_thread_kill; 402 uint64_t zs_enospc_count; 403 uint64_t zs_vdev_next_leaf; 404 uint64_t zs_vdev_aux; 405 uint64_t zs_alloc; 406 uint64_t zs_space; 407 uint64_t zs_splits; 408 uint64_t zs_mirrors; 409 uint64_t zs_metaslab_sz; 410 uint64_t zs_metaslab_df_alloc_threshold; 411 uint64_t zs_guid; 412 } ztest_shared_t; 413 414 #define ID_PARALLEL -1ULL 415 416 static char ztest_dev_template[] = "%s/%s.%llua"; 417 static char ztest_aux_template[] = "%s/%s.%s.%llu"; 418 ztest_shared_t *ztest_shared; 419 420 static spa_t *ztest_spa = NULL; 421 static ztest_ds_t *ztest_ds; 422 423 static mutex_t ztest_vdev_lock; 424 425 /* 426 * The ztest_name_lock protects the pool and dataset namespace used by 427 * the individual tests. To modify the namespace, consumers must grab 428 * this lock as writer. Grabbing the lock as reader will ensure that the 429 * namespace does not change while the lock is held. 430 */ 431 static rwlock_t ztest_name_lock; 432 433 static boolean_t ztest_dump_core = B_TRUE; 434 static boolean_t ztest_exiting; 435 436 /* Global commit callback list */ 437 static ztest_cb_list_t zcl; 438 439 enum ztest_object { 440 ZTEST_META_DNODE = 0, 441 ZTEST_DIROBJ, 442 ZTEST_OBJECTS 443 }; 444 445 static void usage(boolean_t) __NORETURN; 446 447 /* 448 * These libumem hooks provide a reasonable set of defaults for the allocator's 449 * debugging facilities. 450 */ 451 const char * 452 _umem_debug_init() 453 { 454 return ("default,verbose"); /* $UMEM_DEBUG setting */ 455 } 456 457 const char * 458 _umem_logging_init(void) 459 { 460 return ("fail,contents"); /* $UMEM_LOGGING setting */ 461 } 462 463 #define FATAL_MSG_SZ 1024 464 465 char *fatal_msg; 466 467 static void 468 fatal(int do_perror, char *message, ...) 469 { 470 va_list args; 471 int save_errno = errno; 472 char buf[FATAL_MSG_SZ]; 473 474 (void) fflush(stdout); 475 476 va_start(args, message); 477 (void) sprintf(buf, "ztest: "); 478 /* LINTED */ 479 (void) vsprintf(buf + strlen(buf), message, args); 480 va_end(args); 481 if (do_perror) { 482 (void) snprintf(buf + strlen(buf), FATAL_MSG_SZ - strlen(buf), 483 ": %s", strerror(save_errno)); 484 } 485 (void) fprintf(stderr, "%s\n", buf); 486 fatal_msg = buf; /* to ease debugging */ 487 if (ztest_dump_core) 488 abort(); 489 exit(3); 490 } 491 492 static int 493 str2shift(const char *buf) 494 { 495 const char *ends = "BKMGTPEZ"; 496 int i; 497 498 if (buf[0] == '\0') 499 return (0); 500 for (i = 0; i < strlen(ends); i++) { 501 if (toupper(buf[0]) == ends[i]) 502 break; 503 } 504 if (i == strlen(ends)) { 505 (void) fprintf(stderr, "ztest: invalid bytes suffix: %s\n", 506 buf); 507 usage(B_FALSE); 508 } 509 if (buf[1] == '\0' || (toupper(buf[1]) == 'B' && buf[2] == '\0')) { 510 return (10*i); 511 } 512 (void) fprintf(stderr, "ztest: invalid bytes suffix: %s\n", buf); 513 usage(B_FALSE); 514 /* NOTREACHED */ 515 } 516 517 static uint64_t 518 nicenumtoull(const char *buf) 519 { 520 char *end; 521 uint64_t val; 522 523 val = strtoull(buf, &end, 0); 524 if (end == buf) { 525 (void) fprintf(stderr, "ztest: bad numeric value: %s\n", buf); 526 usage(B_FALSE); 527 } else if (end[0] == '.') { 528 double fval = strtod(buf, &end); 529 fval *= pow(2, str2shift(end)); 530 if (fval > UINT64_MAX) { 531 (void) fprintf(stderr, "ztest: value too large: %s\n", 532 buf); 533 usage(B_FALSE); 534 } 535 val = (uint64_t)fval; 536 } else { 537 int shift = str2shift(end); 538 if (shift >= 64 || (val << shift) >> shift != val) { 539 (void) fprintf(stderr, "ztest: value too large: %s\n", 540 buf); 541 usage(B_FALSE); 542 } 543 val <<= shift; 544 } 545 return (val); 546 } 547 548 static void 549 usage(boolean_t requested) 550 { 551 const ztest_shared_opts_t *zo = &ztest_opts_defaults; 552 553 char nice_vdev_size[10]; 554 char nice_gang_bang[10]; 555 FILE *fp = requested ? stdout : stderr; 556 557 nicenum(zo->zo_vdev_size, nice_vdev_size); 558 nicenum(zo->zo_metaslab_gang_bang, nice_gang_bang); 559 560 (void) fprintf(fp, "Usage: %s\n" 561 "\t[-v vdevs (default: %llu)]\n" 562 "\t[-s size_of_each_vdev (default: %s)]\n" 563 "\t[-a alignment_shift (default: %d)] use 0 for random\n" 564 "\t[-m mirror_copies (default: %d)]\n" 565 "\t[-r raidz_disks (default: %d)]\n" 566 "\t[-R raidz_parity (default: %d)]\n" 567 "\t[-d datasets (default: %d)]\n" 568 "\t[-t threads (default: %d)]\n" 569 "\t[-g gang_block_threshold (default: %s)]\n" 570 "\t[-i init_count (default: %d)] initialize pool i times\n" 571 "\t[-k kill_percentage (default: %llu%%)]\n" 572 "\t[-p pool_name (default: %s)]\n" 573 "\t[-f dir (default: %s)] file directory for vdev files\n" 574 "\t[-V] verbose (use multiple times for ever more blather)\n" 575 "\t[-E] use existing pool instead of creating new one\n" 576 "\t[-T time (default: %llu sec)] total run time\n" 577 "\t[-F freezeloops (default: %llu)] max loops in spa_freeze()\n" 578 "\t[-P passtime (default: %llu sec)] time per pass\n" 579 "\t[-B alt_ztest (default: <none>)] alternate ztest path\n" 580 "\t[-h] (print help)\n" 581 "", 582 zo->zo_pool, 583 (u_longlong_t)zo->zo_vdevs, /* -v */ 584 nice_vdev_size, /* -s */ 585 zo->zo_ashift, /* -a */ 586 zo->zo_mirrors, /* -m */ 587 zo->zo_raidz, /* -r */ 588 zo->zo_raidz_parity, /* -R */ 589 zo->zo_datasets, /* -d */ 590 zo->zo_threads, /* -t */ 591 nice_gang_bang, /* -g */ 592 zo->zo_init, /* -i */ 593 (u_longlong_t)zo->zo_killrate, /* -k */ 594 zo->zo_pool, /* -p */ 595 zo->zo_dir, /* -f */ 596 (u_longlong_t)zo->zo_time, /* -T */ 597 (u_longlong_t)zo->zo_maxloops, /* -F */ 598 (u_longlong_t)zo->zo_passtime); 599 exit(requested ? 0 : 1); 600 } 601 602 static void 603 process_options(int argc, char **argv) 604 { 605 char *path; 606 ztest_shared_opts_t *zo = &ztest_opts; 607 608 int opt; 609 uint64_t value; 610 char altdir[MAXNAMELEN] = { 0 }; 611 612 bcopy(&ztest_opts_defaults, zo, sizeof (*zo)); 613 614 while ((opt = getopt(argc, argv, 615 "v:s:a:m:r:R:d:t:g:i:k:p:f:VET:P:hF:B:")) != EOF) { 616 value = 0; 617 switch (opt) { 618 case 'v': 619 case 's': 620 case 'a': 621 case 'm': 622 case 'r': 623 case 'R': 624 case 'd': 625 case 't': 626 case 'g': 627 case 'i': 628 case 'k': 629 case 'T': 630 case 'P': 631 case 'F': 632 value = nicenumtoull(optarg); 633 } 634 switch (opt) { 635 case 'v': 636 zo->zo_vdevs = value; 637 break; 638 case 's': 639 zo->zo_vdev_size = MAX(SPA_MINDEVSIZE, value); 640 break; 641 case 'a': 642 zo->zo_ashift = value; 643 break; 644 case 'm': 645 zo->zo_mirrors = value; 646 break; 647 case 'r': 648 zo->zo_raidz = MAX(1, value); 649 break; 650 case 'R': 651 zo->zo_raidz_parity = MIN(MAX(value, 1), 3); 652 break; 653 case 'd': 654 zo->zo_datasets = MAX(1, value); 655 break; 656 case 't': 657 zo->zo_threads = MAX(1, value); 658 break; 659 case 'g': 660 zo->zo_metaslab_gang_bang = MAX(SPA_MINBLOCKSIZE << 1, 661 value); 662 break; 663 case 'i': 664 zo->zo_init = value; 665 break; 666 case 'k': 667 zo->zo_killrate = value; 668 break; 669 case 'p': 670 (void) strlcpy(zo->zo_pool, optarg, 671 sizeof (zo->zo_pool)); 672 break; 673 case 'f': 674 path = realpath(optarg, NULL); 675 if (path == NULL) { 676 (void) fprintf(stderr, "error: %s: %s\n", 677 optarg, strerror(errno)); 678 usage(B_FALSE); 679 } else { 680 (void) strlcpy(zo->zo_dir, path, 681 sizeof (zo->zo_dir)); 682 } 683 break; 684 case 'V': 685 zo->zo_verbose++; 686 break; 687 case 'E': 688 zo->zo_init = 0; 689 break; 690 case 'T': 691 zo->zo_time = value; 692 break; 693 case 'P': 694 zo->zo_passtime = MAX(1, value); 695 break; 696 case 'F': 697 zo->zo_maxloops = MAX(1, value); 698 break; 699 case 'B': 700 (void) strlcpy(altdir, optarg, sizeof (altdir)); 701 break; 702 case 'h': 703 usage(B_TRUE); 704 break; 705 case '?': 706 default: 707 usage(B_FALSE); 708 break; 709 } 710 } 711 712 zo->zo_raidz_parity = MIN(zo->zo_raidz_parity, zo->zo_raidz - 1); 713 714 zo->zo_vdevtime = 715 (zo->zo_vdevs > 0 ? zo->zo_time * NANOSEC / zo->zo_vdevs : 716 UINT64_MAX >> 2); 717 718 if (strlen(altdir) > 0) { 719 char *cmd; 720 char *realaltdir; 721 char *bin; 722 char *ztest; 723 char *isa; 724 int isalen; 725 726 cmd = umem_alloc(MAXPATHLEN, UMEM_NOFAIL); 727 realaltdir = umem_alloc(MAXPATHLEN, UMEM_NOFAIL); 728 729 VERIFY(NULL != realpath(getexecname(), cmd)); 730 if (0 != access(altdir, F_OK)) { 731 ztest_dump_core = B_FALSE; 732 fatal(B_TRUE, "invalid alternate ztest path: %s", 733 altdir); 734 } 735 VERIFY(NULL != realpath(altdir, realaltdir)); 736 737 /* 738 * 'cmd' should be of the form "<anything>/usr/bin/<isa>/ztest". 739 * We want to extract <isa> to determine if we should use 740 * 32 or 64 bit binaries. 741 */ 742 bin = strstr(cmd, "/usr/bin/"); 743 ztest = strstr(bin, "/ztest"); 744 isa = bin + 9; 745 isalen = ztest - isa; 746 (void) snprintf(zo->zo_alt_ztest, sizeof (zo->zo_alt_ztest), 747 "%s/usr/bin/%.*s/ztest", realaltdir, isalen, isa); 748 (void) snprintf(zo->zo_alt_libpath, sizeof (zo->zo_alt_libpath), 749 "%s/usr/lib/%.*s", realaltdir, isalen, isa); 750 751 if (0 != access(zo->zo_alt_ztest, X_OK)) { 752 ztest_dump_core = B_FALSE; 753 fatal(B_TRUE, "invalid alternate ztest: %s", 754 zo->zo_alt_ztest); 755 } else if (0 != access(zo->zo_alt_libpath, X_OK)) { 756 ztest_dump_core = B_FALSE; 757 fatal(B_TRUE, "invalid alternate lib directory %s", 758 zo->zo_alt_libpath); 759 } 760 761 umem_free(cmd, MAXPATHLEN); 762 umem_free(realaltdir, MAXPATHLEN); 763 } 764 } 765 766 static void 767 ztest_kill(ztest_shared_t *zs) 768 { 769 zs->zs_alloc = metaslab_class_get_alloc(spa_normal_class(ztest_spa)); 770 zs->zs_space = metaslab_class_get_space(spa_normal_class(ztest_spa)); 771 772 /* 773 * Before we kill off ztest, make sure that the config is updated. 774 * See comment above spa_config_sync(). 775 */ 776 mutex_enter(&spa_namespace_lock); 777 spa_config_sync(ztest_spa, B_FALSE, B_FALSE); 778 mutex_exit(&spa_namespace_lock); 779 780 zfs_dbgmsg_print(FTAG); 781 (void) kill(getpid(), SIGKILL); 782 } 783 784 static uint64_t 785 ztest_random(uint64_t range) 786 { 787 uint64_t r; 788 789 ASSERT3S(ztest_fd_rand, >=, 0); 790 791 if (range == 0) 792 return (0); 793 794 if (read(ztest_fd_rand, &r, sizeof (r)) != sizeof (r)) 795 fatal(1, "short read from /dev/urandom"); 796 797 return (r % range); 798 } 799 800 /* ARGSUSED */ 801 static void 802 ztest_record_enospc(const char *s) 803 { 804 ztest_shared->zs_enospc_count++; 805 } 806 807 static uint64_t 808 ztest_get_ashift(void) 809 { 810 if (ztest_opts.zo_ashift == 0) 811 return (SPA_MINBLOCKSHIFT + ztest_random(5)); 812 return (ztest_opts.zo_ashift); 813 } 814 815 static nvlist_t * 816 make_vdev_file(char *path, char *aux, char *pool, size_t size, uint64_t ashift) 817 { 818 char pathbuf[MAXPATHLEN]; 819 uint64_t vdev; 820 nvlist_t *file; 821 822 if (ashift == 0) 823 ashift = ztest_get_ashift(); 824 825 if (path == NULL) { 826 path = pathbuf; 827 828 if (aux != NULL) { 829 vdev = ztest_shared->zs_vdev_aux; 830 (void) snprintf(path, sizeof (pathbuf), 831 ztest_aux_template, ztest_opts.zo_dir, 832 pool == NULL ? ztest_opts.zo_pool : pool, 833 aux, vdev); 834 } else { 835 vdev = ztest_shared->zs_vdev_next_leaf++; 836 (void) snprintf(path, sizeof (pathbuf), 837 ztest_dev_template, ztest_opts.zo_dir, 838 pool == NULL ? ztest_opts.zo_pool : pool, vdev); 839 } 840 } 841 842 if (size != 0) { 843 int fd = open(path, O_RDWR | O_CREAT | O_TRUNC, 0666); 844 if (fd == -1) 845 fatal(1, "can't open %s", path); 846 if (ftruncate(fd, size) != 0) 847 fatal(1, "can't ftruncate %s", path); 848 (void) close(fd); 849 } 850 851 VERIFY(nvlist_alloc(&file, NV_UNIQUE_NAME, 0) == 0); 852 VERIFY(nvlist_add_string(file, ZPOOL_CONFIG_TYPE, VDEV_TYPE_FILE) == 0); 853 VERIFY(nvlist_add_string(file, ZPOOL_CONFIG_PATH, path) == 0); 854 VERIFY(nvlist_add_uint64(file, ZPOOL_CONFIG_ASHIFT, ashift) == 0); 855 856 return (file); 857 } 858 859 static nvlist_t * 860 make_vdev_raidz(char *path, char *aux, char *pool, size_t size, 861 uint64_t ashift, int r) 862 { 863 nvlist_t *raidz, **child; 864 int c; 865 866 if (r < 2) 867 return (make_vdev_file(path, aux, pool, size, ashift)); 868 child = umem_alloc(r * sizeof (nvlist_t *), UMEM_NOFAIL); 869 870 for (c = 0; c < r; c++) 871 child[c] = make_vdev_file(path, aux, pool, size, ashift); 872 873 VERIFY(nvlist_alloc(&raidz, NV_UNIQUE_NAME, 0) == 0); 874 VERIFY(nvlist_add_string(raidz, ZPOOL_CONFIG_TYPE, 875 VDEV_TYPE_RAIDZ) == 0); 876 VERIFY(nvlist_add_uint64(raidz, ZPOOL_CONFIG_NPARITY, 877 ztest_opts.zo_raidz_parity) == 0); 878 VERIFY(nvlist_add_nvlist_array(raidz, ZPOOL_CONFIG_CHILDREN, 879 child, r) == 0); 880 881 for (c = 0; c < r; c++) 882 nvlist_free(child[c]); 883 884 umem_free(child, r * sizeof (nvlist_t *)); 885 886 return (raidz); 887 } 888 889 static nvlist_t * 890 make_vdev_mirror(char *path, char *aux, char *pool, size_t size, 891 uint64_t ashift, int r, int m) 892 { 893 nvlist_t *mirror, **child; 894 int c; 895 896 if (m < 1) 897 return (make_vdev_raidz(path, aux, pool, size, ashift, r)); 898 899 child = umem_alloc(m * sizeof (nvlist_t *), UMEM_NOFAIL); 900 901 for (c = 0; c < m; c++) 902 child[c] = make_vdev_raidz(path, aux, pool, size, ashift, r); 903 904 VERIFY(nvlist_alloc(&mirror, NV_UNIQUE_NAME, 0) == 0); 905 VERIFY(nvlist_add_string(mirror, ZPOOL_CONFIG_TYPE, 906 VDEV_TYPE_MIRROR) == 0); 907 VERIFY(nvlist_add_nvlist_array(mirror, ZPOOL_CONFIG_CHILDREN, 908 child, m) == 0); 909 910 for (c = 0; c < m; c++) 911 nvlist_free(child[c]); 912 913 umem_free(child, m * sizeof (nvlist_t *)); 914 915 return (mirror); 916 } 917 918 static nvlist_t * 919 make_vdev_root(char *path, char *aux, char *pool, size_t size, uint64_t ashift, 920 int log, int r, int m, int t) 921 { 922 nvlist_t *root, **child; 923 int c; 924 925 ASSERT(t > 0); 926 927 child = umem_alloc(t * sizeof (nvlist_t *), UMEM_NOFAIL); 928 929 for (c = 0; c < t; c++) { 930 child[c] = make_vdev_mirror(path, aux, pool, size, ashift, 931 r, m); 932 VERIFY(nvlist_add_uint64(child[c], ZPOOL_CONFIG_IS_LOG, 933 log) == 0); 934 } 935 936 VERIFY(nvlist_alloc(&root, NV_UNIQUE_NAME, 0) == 0); 937 VERIFY(nvlist_add_string(root, ZPOOL_CONFIG_TYPE, VDEV_TYPE_ROOT) == 0); 938 VERIFY(nvlist_add_nvlist_array(root, aux ? aux : ZPOOL_CONFIG_CHILDREN, 939 child, t) == 0); 940 941 for (c = 0; c < t; c++) 942 nvlist_free(child[c]); 943 944 umem_free(child, t * sizeof (nvlist_t *)); 945 946 return (root); 947 } 948 949 /* 950 * Find a random spa version. Returns back a random spa version in the 951 * range [initial_version, SPA_VERSION_FEATURES]. 952 */ 953 static uint64_t 954 ztest_random_spa_version(uint64_t initial_version) 955 { 956 uint64_t version = initial_version; 957 958 if (version <= SPA_VERSION_BEFORE_FEATURES) { 959 version = version + 960 ztest_random(SPA_VERSION_BEFORE_FEATURES - version + 1); 961 } 962 963 if (version > SPA_VERSION_BEFORE_FEATURES) 964 version = SPA_VERSION_FEATURES; 965 966 ASSERT(SPA_VERSION_IS_SUPPORTED(version)); 967 return (version); 968 } 969 970 static int 971 ztest_random_blocksize(void) 972 { 973 uint64_t block_shift; 974 /* 975 * Choose a block size >= the ashift. 976 * If the SPA supports new MAXBLOCKSIZE, test up to 1MB blocks. 977 */ 978 int maxbs = SPA_OLD_MAXBLOCKSHIFT; 979 if (spa_maxblocksize(ztest_spa) == SPA_MAXBLOCKSIZE) 980 maxbs = 20; 981 block_shift = ztest_random(maxbs - ztest_spa->spa_max_ashift + 1); 982 return (1 << (SPA_MINBLOCKSHIFT + block_shift)); 983 } 984 985 static int 986 ztest_random_ibshift(void) 987 { 988 return (DN_MIN_INDBLKSHIFT + 989 ztest_random(DN_MAX_INDBLKSHIFT - DN_MIN_INDBLKSHIFT + 1)); 990 } 991 992 static uint64_t 993 ztest_random_vdev_top(spa_t *spa, boolean_t log_ok) 994 { 995 uint64_t top; 996 vdev_t *rvd = spa->spa_root_vdev; 997 vdev_t *tvd; 998 999 ASSERT(spa_config_held(spa, SCL_ALL, RW_READER) != 0); 1000 1001 do { 1002 top = ztest_random(rvd->vdev_children); 1003 tvd = rvd->vdev_child[top]; 1004 } while (tvd->vdev_ishole || (tvd->vdev_islog && !log_ok) || 1005 tvd->vdev_mg == NULL || tvd->vdev_mg->mg_class == NULL); 1006 1007 return (top); 1008 } 1009 1010 static uint64_t 1011 ztest_random_dsl_prop(zfs_prop_t prop) 1012 { 1013 uint64_t value; 1014 1015 do { 1016 value = zfs_prop_random_value(prop, ztest_random(-1ULL)); 1017 } while (prop == ZFS_PROP_CHECKSUM && value == ZIO_CHECKSUM_OFF); 1018 1019 return (value); 1020 } 1021 1022 static int 1023 ztest_dsl_prop_set_uint64(char *osname, zfs_prop_t prop, uint64_t value, 1024 boolean_t inherit) 1025 { 1026 const char *propname = zfs_prop_to_name(prop); 1027 const char *valname; 1028 char setpoint[MAXPATHLEN]; 1029 uint64_t curval; 1030 int error; 1031 1032 error = dsl_prop_set_int(osname, propname, 1033 (inherit ? ZPROP_SRC_NONE : ZPROP_SRC_LOCAL), value); 1034 1035 if (error == ENOSPC) { 1036 ztest_record_enospc(FTAG); 1037 return (error); 1038 } 1039 ASSERT0(error); 1040 1041 VERIFY0(dsl_prop_get_integer(osname, propname, &curval, setpoint)); 1042 1043 if (ztest_opts.zo_verbose >= 6) { 1044 VERIFY(zfs_prop_index_to_string(prop, curval, &valname) == 0); 1045 (void) printf("%s %s = %s at '%s'\n", 1046 osname, propname, valname, setpoint); 1047 } 1048 1049 return (error); 1050 } 1051 1052 static int 1053 ztest_spa_prop_set_uint64(zpool_prop_t prop, uint64_t value) 1054 { 1055 spa_t *spa = ztest_spa; 1056 nvlist_t *props = NULL; 1057 int error; 1058 1059 VERIFY(nvlist_alloc(&props, NV_UNIQUE_NAME, 0) == 0); 1060 VERIFY(nvlist_add_uint64(props, zpool_prop_to_name(prop), value) == 0); 1061 1062 error = spa_prop_set(spa, props); 1063 1064 nvlist_free(props); 1065 1066 if (error == ENOSPC) { 1067 ztest_record_enospc(FTAG); 1068 return (error); 1069 } 1070 ASSERT0(error); 1071 1072 return (error); 1073 } 1074 1075 static void 1076 ztest_rll_init(rll_t *rll) 1077 { 1078 rll->rll_writer = NULL; 1079 rll->rll_readers = 0; 1080 VERIFY(_mutex_init(&rll->rll_lock, USYNC_THREAD, NULL) == 0); 1081 VERIFY(cond_init(&rll->rll_cv, USYNC_THREAD, NULL) == 0); 1082 } 1083 1084 static void 1085 ztest_rll_destroy(rll_t *rll) 1086 { 1087 ASSERT(rll->rll_writer == NULL); 1088 ASSERT(rll->rll_readers == 0); 1089 VERIFY(_mutex_destroy(&rll->rll_lock) == 0); 1090 VERIFY(cond_destroy(&rll->rll_cv) == 0); 1091 } 1092 1093 static void 1094 ztest_rll_lock(rll_t *rll, rl_type_t type) 1095 { 1096 VERIFY(mutex_lock(&rll->rll_lock) == 0); 1097 1098 if (type == RL_READER) { 1099 while (rll->rll_writer != NULL) 1100 (void) cond_wait(&rll->rll_cv, &rll->rll_lock); 1101 rll->rll_readers++; 1102 } else { 1103 while (rll->rll_writer != NULL || rll->rll_readers) 1104 (void) cond_wait(&rll->rll_cv, &rll->rll_lock); 1105 rll->rll_writer = curthread; 1106 } 1107 1108 VERIFY(mutex_unlock(&rll->rll_lock) == 0); 1109 } 1110 1111 static void 1112 ztest_rll_unlock(rll_t *rll) 1113 { 1114 VERIFY(mutex_lock(&rll->rll_lock) == 0); 1115 1116 if (rll->rll_writer) { 1117 ASSERT(rll->rll_readers == 0); 1118 rll->rll_writer = NULL; 1119 } else { 1120 ASSERT(rll->rll_readers != 0); 1121 ASSERT(rll->rll_writer == NULL); 1122 rll->rll_readers--; 1123 } 1124 1125 if (rll->rll_writer == NULL && rll->rll_readers == 0) 1126 VERIFY(cond_broadcast(&rll->rll_cv) == 0); 1127 1128 VERIFY(mutex_unlock(&rll->rll_lock) == 0); 1129 } 1130 1131 static void 1132 ztest_object_lock(ztest_ds_t *zd, uint64_t object, rl_type_t type) 1133 { 1134 rll_t *rll = &zd->zd_object_lock[object & (ZTEST_OBJECT_LOCKS - 1)]; 1135 1136 ztest_rll_lock(rll, type); 1137 } 1138 1139 static void 1140 ztest_object_unlock(ztest_ds_t *zd, uint64_t object) 1141 { 1142 rll_t *rll = &zd->zd_object_lock[object & (ZTEST_OBJECT_LOCKS - 1)]; 1143 1144 ztest_rll_unlock(rll); 1145 } 1146 1147 static rl_t * 1148 ztest_range_lock(ztest_ds_t *zd, uint64_t object, uint64_t offset, 1149 uint64_t size, rl_type_t type) 1150 { 1151 uint64_t hash = object ^ (offset % (ZTEST_RANGE_LOCKS + 1)); 1152 rll_t *rll = &zd->zd_range_lock[hash & (ZTEST_RANGE_LOCKS - 1)]; 1153 rl_t *rl; 1154 1155 rl = umem_alloc(sizeof (*rl), UMEM_NOFAIL); 1156 rl->rl_object = object; 1157 rl->rl_offset = offset; 1158 rl->rl_size = size; 1159 rl->rl_lock = rll; 1160 1161 ztest_rll_lock(rll, type); 1162 1163 return (rl); 1164 } 1165 1166 static void 1167 ztest_range_unlock(rl_t *rl) 1168 { 1169 rll_t *rll = rl->rl_lock; 1170 1171 ztest_rll_unlock(rll); 1172 1173 umem_free(rl, sizeof (*rl)); 1174 } 1175 1176 static void 1177 ztest_zd_init(ztest_ds_t *zd, ztest_shared_ds_t *szd, objset_t *os) 1178 { 1179 zd->zd_os = os; 1180 zd->zd_zilog = dmu_objset_zil(os); 1181 zd->zd_shared = szd; 1182 dmu_objset_name(os, zd->zd_name); 1183 1184 if (zd->zd_shared != NULL) 1185 zd->zd_shared->zd_seq = 0; 1186 1187 VERIFY(rwlock_init(&zd->zd_zilog_lock, USYNC_THREAD, NULL) == 0); 1188 VERIFY(_mutex_init(&zd->zd_dirobj_lock, USYNC_THREAD, NULL) == 0); 1189 1190 for (int l = 0; l < ZTEST_OBJECT_LOCKS; l++) 1191 ztest_rll_init(&zd->zd_object_lock[l]); 1192 1193 for (int l = 0; l < ZTEST_RANGE_LOCKS; l++) 1194 ztest_rll_init(&zd->zd_range_lock[l]); 1195 } 1196 1197 static void 1198 ztest_zd_fini(ztest_ds_t *zd) 1199 { 1200 VERIFY(_mutex_destroy(&zd->zd_dirobj_lock) == 0); 1201 1202 for (int l = 0; l < ZTEST_OBJECT_LOCKS; l++) 1203 ztest_rll_destroy(&zd->zd_object_lock[l]); 1204 1205 for (int l = 0; l < ZTEST_RANGE_LOCKS; l++) 1206 ztest_rll_destroy(&zd->zd_range_lock[l]); 1207 } 1208 1209 #define TXG_MIGHTWAIT (ztest_random(10) == 0 ? TXG_NOWAIT : TXG_WAIT) 1210 1211 static uint64_t 1212 ztest_tx_assign(dmu_tx_t *tx, uint64_t txg_how, const char *tag) 1213 { 1214 uint64_t txg; 1215 int error; 1216 1217 /* 1218 * Attempt to assign tx to some transaction group. 1219 */ 1220 error = dmu_tx_assign(tx, txg_how); 1221 if (error) { 1222 if (error == ERESTART) { 1223 ASSERT(txg_how == TXG_NOWAIT); 1224 dmu_tx_wait(tx); 1225 } else { 1226 ASSERT3U(error, ==, ENOSPC); 1227 ztest_record_enospc(tag); 1228 } 1229 dmu_tx_abort(tx); 1230 return (0); 1231 } 1232 txg = dmu_tx_get_txg(tx); 1233 ASSERT(txg != 0); 1234 return (txg); 1235 } 1236 1237 static void 1238 ztest_pattern_set(void *buf, uint64_t size, uint64_t value) 1239 { 1240 uint64_t *ip = buf; 1241 uint64_t *ip_end = (uint64_t *)((uintptr_t)buf + (uintptr_t)size); 1242 1243 while (ip < ip_end) 1244 *ip++ = value; 1245 } 1246 1247 static boolean_t 1248 ztest_pattern_match(void *buf, uint64_t size, uint64_t value) 1249 { 1250 uint64_t *ip = buf; 1251 uint64_t *ip_end = (uint64_t *)((uintptr_t)buf + (uintptr_t)size); 1252 uint64_t diff = 0; 1253 1254 while (ip < ip_end) 1255 diff |= (value - *ip++); 1256 1257 return (diff == 0); 1258 } 1259 1260 static void 1261 ztest_bt_generate(ztest_block_tag_t *bt, objset_t *os, uint64_t object, 1262 uint64_t offset, uint64_t gen, uint64_t txg, uint64_t crtxg) 1263 { 1264 bt->bt_magic = BT_MAGIC; 1265 bt->bt_objset = dmu_objset_id(os); 1266 bt->bt_object = object; 1267 bt->bt_offset = offset; 1268 bt->bt_gen = gen; 1269 bt->bt_txg = txg; 1270 bt->bt_crtxg = crtxg; 1271 } 1272 1273 static void 1274 ztest_bt_verify(ztest_block_tag_t *bt, objset_t *os, uint64_t object, 1275 uint64_t offset, uint64_t gen, uint64_t txg, uint64_t crtxg) 1276 { 1277 ASSERT3U(bt->bt_magic, ==, BT_MAGIC); 1278 ASSERT3U(bt->bt_objset, ==, dmu_objset_id(os)); 1279 ASSERT3U(bt->bt_object, ==, object); 1280 ASSERT3U(bt->bt_offset, ==, offset); 1281 ASSERT3U(bt->bt_gen, <=, gen); 1282 ASSERT3U(bt->bt_txg, <=, txg); 1283 ASSERT3U(bt->bt_crtxg, ==, crtxg); 1284 } 1285 1286 static ztest_block_tag_t * 1287 ztest_bt_bonus(dmu_buf_t *db) 1288 { 1289 dmu_object_info_t doi; 1290 ztest_block_tag_t *bt; 1291 1292 dmu_object_info_from_db(db, &doi); 1293 ASSERT3U(doi.doi_bonus_size, <=, db->db_size); 1294 ASSERT3U(doi.doi_bonus_size, >=, sizeof (*bt)); 1295 bt = (void *)((char *)db->db_data + doi.doi_bonus_size - sizeof (*bt)); 1296 1297 return (bt); 1298 } 1299 1300 /* 1301 * ZIL logging ops 1302 */ 1303 1304 #define lrz_type lr_mode 1305 #define lrz_blocksize lr_uid 1306 #define lrz_ibshift lr_gid 1307 #define lrz_bonustype lr_rdev 1308 #define lrz_bonuslen lr_crtime[1] 1309 1310 static void 1311 ztest_log_create(ztest_ds_t *zd, dmu_tx_t *tx, lr_create_t *lr) 1312 { 1313 char *name = (void *)(lr + 1); /* name follows lr */ 1314 size_t namesize = strlen(name) + 1; 1315 itx_t *itx; 1316 1317 if (zil_replaying(zd->zd_zilog, tx)) 1318 return; 1319 1320 itx = zil_itx_create(TX_CREATE, sizeof (*lr) + namesize); 1321 bcopy(&lr->lr_common + 1, &itx->itx_lr + 1, 1322 sizeof (*lr) + namesize - sizeof (lr_t)); 1323 1324 zil_itx_assign(zd->zd_zilog, itx, tx); 1325 } 1326 1327 static void 1328 ztest_log_remove(ztest_ds_t *zd, dmu_tx_t *tx, lr_remove_t *lr, uint64_t object) 1329 { 1330 char *name = (void *)(lr + 1); /* name follows lr */ 1331 size_t namesize = strlen(name) + 1; 1332 itx_t *itx; 1333 1334 if (zil_replaying(zd->zd_zilog, tx)) 1335 return; 1336 1337 itx = zil_itx_create(TX_REMOVE, sizeof (*lr) + namesize); 1338 bcopy(&lr->lr_common + 1, &itx->itx_lr + 1, 1339 sizeof (*lr) + namesize - sizeof (lr_t)); 1340 1341 itx->itx_oid = object; 1342 zil_itx_assign(zd->zd_zilog, itx, tx); 1343 } 1344 1345 static void 1346 ztest_log_write(ztest_ds_t *zd, dmu_tx_t *tx, lr_write_t *lr) 1347 { 1348 itx_t *itx; 1349 itx_wr_state_t write_state = ztest_random(WR_NUM_STATES); 1350 1351 if (zil_replaying(zd->zd_zilog, tx)) 1352 return; 1353 1354 if (lr->lr_length > ZIL_MAX_LOG_DATA) 1355 write_state = WR_INDIRECT; 1356 1357 itx = zil_itx_create(TX_WRITE, 1358 sizeof (*lr) + (write_state == WR_COPIED ? lr->lr_length : 0)); 1359 1360 if (write_state == WR_COPIED && 1361 dmu_read(zd->zd_os, lr->lr_foid, lr->lr_offset, lr->lr_length, 1362 ((lr_write_t *)&itx->itx_lr) + 1, DMU_READ_NO_PREFETCH) != 0) { 1363 zil_itx_destroy(itx); 1364 itx = zil_itx_create(TX_WRITE, sizeof (*lr)); 1365 write_state = WR_NEED_COPY; 1366 } 1367 itx->itx_private = zd; 1368 itx->itx_wr_state = write_state; 1369 itx->itx_sync = (ztest_random(8) == 0); 1370 itx->itx_sod += (write_state == WR_NEED_COPY ? lr->lr_length : 0); 1371 1372 bcopy(&lr->lr_common + 1, &itx->itx_lr + 1, 1373 sizeof (*lr) - sizeof (lr_t)); 1374 1375 zil_itx_assign(zd->zd_zilog, itx, tx); 1376 } 1377 1378 static void 1379 ztest_log_truncate(ztest_ds_t *zd, dmu_tx_t *tx, lr_truncate_t *lr) 1380 { 1381 itx_t *itx; 1382 1383 if (zil_replaying(zd->zd_zilog, tx)) 1384 return; 1385 1386 itx = zil_itx_create(TX_TRUNCATE, sizeof (*lr)); 1387 bcopy(&lr->lr_common + 1, &itx->itx_lr + 1, 1388 sizeof (*lr) - sizeof (lr_t)); 1389 1390 itx->itx_sync = B_FALSE; 1391 zil_itx_assign(zd->zd_zilog, itx, tx); 1392 } 1393 1394 static void 1395 ztest_log_setattr(ztest_ds_t *zd, dmu_tx_t *tx, lr_setattr_t *lr) 1396 { 1397 itx_t *itx; 1398 1399 if (zil_replaying(zd->zd_zilog, tx)) 1400 return; 1401 1402 itx = zil_itx_create(TX_SETATTR, sizeof (*lr)); 1403 bcopy(&lr->lr_common + 1, &itx->itx_lr + 1, 1404 sizeof (*lr) - sizeof (lr_t)); 1405 1406 itx->itx_sync = B_FALSE; 1407 zil_itx_assign(zd->zd_zilog, itx, tx); 1408 } 1409 1410 /* 1411 * ZIL replay ops 1412 */ 1413 static int 1414 ztest_replay_create(ztest_ds_t *zd, lr_create_t *lr, boolean_t byteswap) 1415 { 1416 char *name = (void *)(lr + 1); /* name follows lr */ 1417 objset_t *os = zd->zd_os; 1418 ztest_block_tag_t *bbt; 1419 dmu_buf_t *db; 1420 dmu_tx_t *tx; 1421 uint64_t txg; 1422 int error = 0; 1423 1424 if (byteswap) 1425 byteswap_uint64_array(lr, sizeof (*lr)); 1426 1427 ASSERT(lr->lr_doid == ZTEST_DIROBJ); 1428 ASSERT(name[0] != '\0'); 1429 1430 tx = dmu_tx_create(os); 1431 1432 dmu_tx_hold_zap(tx, lr->lr_doid, B_TRUE, name); 1433 1434 if (lr->lrz_type == DMU_OT_ZAP_OTHER) { 1435 dmu_tx_hold_zap(tx, DMU_NEW_OBJECT, B_TRUE, NULL); 1436 } else { 1437 dmu_tx_hold_bonus(tx, DMU_NEW_OBJECT); 1438 } 1439 1440 txg = ztest_tx_assign(tx, TXG_WAIT, FTAG); 1441 if (txg == 0) 1442 return (ENOSPC); 1443 1444 ASSERT(dmu_objset_zil(os)->zl_replay == !!lr->lr_foid); 1445 1446 if (lr->lrz_type == DMU_OT_ZAP_OTHER) { 1447 if (lr->lr_foid == 0) { 1448 lr->lr_foid = zap_create(os, 1449 lr->lrz_type, lr->lrz_bonustype, 1450 lr->lrz_bonuslen, tx); 1451 } else { 1452 error = zap_create_claim(os, lr->lr_foid, 1453 lr->lrz_type, lr->lrz_bonustype, 1454 lr->lrz_bonuslen, tx); 1455 } 1456 } else { 1457 if (lr->lr_foid == 0) { 1458 lr->lr_foid = dmu_object_alloc(os, 1459 lr->lrz_type, 0, lr->lrz_bonustype, 1460 lr->lrz_bonuslen, tx); 1461 } else { 1462 error = dmu_object_claim(os, lr->lr_foid, 1463 lr->lrz_type, 0, lr->lrz_bonustype, 1464 lr->lrz_bonuslen, tx); 1465 } 1466 } 1467 1468 if (error) { 1469 ASSERT3U(error, ==, EEXIST); 1470 ASSERT(zd->zd_zilog->zl_replay); 1471 dmu_tx_commit(tx); 1472 return (error); 1473 } 1474 1475 ASSERT(lr->lr_foid != 0); 1476 1477 if (lr->lrz_type != DMU_OT_ZAP_OTHER) 1478 VERIFY3U(0, ==, dmu_object_set_blocksize(os, lr->lr_foid, 1479 lr->lrz_blocksize, lr->lrz_ibshift, tx)); 1480 1481 VERIFY3U(0, ==, dmu_bonus_hold(os, lr->lr_foid, FTAG, &db)); 1482 bbt = ztest_bt_bonus(db); 1483 dmu_buf_will_dirty(db, tx); 1484 ztest_bt_generate(bbt, os, lr->lr_foid, -1ULL, lr->lr_gen, txg, txg); 1485 dmu_buf_rele(db, FTAG); 1486 1487 VERIFY3U(0, ==, zap_add(os, lr->lr_doid, name, sizeof (uint64_t), 1, 1488 &lr->lr_foid, tx)); 1489 1490 (void) ztest_log_create(zd, tx, lr); 1491 1492 dmu_tx_commit(tx); 1493 1494 return (0); 1495 } 1496 1497 static int 1498 ztest_replay_remove(ztest_ds_t *zd, lr_remove_t *lr, boolean_t byteswap) 1499 { 1500 char *name = (void *)(lr + 1); /* name follows lr */ 1501 objset_t *os = zd->zd_os; 1502 dmu_object_info_t doi; 1503 dmu_tx_t *tx; 1504 uint64_t object, txg; 1505 1506 if (byteswap) 1507 byteswap_uint64_array(lr, sizeof (*lr)); 1508 1509 ASSERT(lr->lr_doid == ZTEST_DIROBJ); 1510 ASSERT(name[0] != '\0'); 1511 1512 VERIFY3U(0, ==, 1513 zap_lookup(os, lr->lr_doid, name, sizeof (object), 1, &object)); 1514 ASSERT(object != 0); 1515 1516 ztest_object_lock(zd, object, RL_WRITER); 1517 1518 VERIFY3U(0, ==, dmu_object_info(os, object, &doi)); 1519 1520 tx = dmu_tx_create(os); 1521 1522 dmu_tx_hold_zap(tx, lr->lr_doid, B_FALSE, name); 1523 dmu_tx_hold_free(tx, object, 0, DMU_OBJECT_END); 1524 1525 txg = ztest_tx_assign(tx, TXG_WAIT, FTAG); 1526 if (txg == 0) { 1527 ztest_object_unlock(zd, object); 1528 return (ENOSPC); 1529 } 1530 1531 if (doi.doi_type == DMU_OT_ZAP_OTHER) { 1532 VERIFY3U(0, ==, zap_destroy(os, object, tx)); 1533 } else { 1534 VERIFY3U(0, ==, dmu_object_free(os, object, tx)); 1535 } 1536 1537 VERIFY3U(0, ==, zap_remove(os, lr->lr_doid, name, tx)); 1538 1539 (void) ztest_log_remove(zd, tx, lr, object); 1540 1541 dmu_tx_commit(tx); 1542 1543 ztest_object_unlock(zd, object); 1544 1545 return (0); 1546 } 1547 1548 static int 1549 ztest_replay_write(ztest_ds_t *zd, lr_write_t *lr, boolean_t byteswap) 1550 { 1551 objset_t *os = zd->zd_os; 1552 void *data = lr + 1; /* data follows lr */ 1553 uint64_t offset, length; 1554 ztest_block_tag_t *bt = data; 1555 ztest_block_tag_t *bbt; 1556 uint64_t gen, txg, lrtxg, crtxg; 1557 dmu_object_info_t doi; 1558 dmu_tx_t *tx; 1559 dmu_buf_t *db; 1560 arc_buf_t *abuf = NULL; 1561 rl_t *rl; 1562 1563 if (byteswap) 1564 byteswap_uint64_array(lr, sizeof (*lr)); 1565 1566 offset = lr->lr_offset; 1567 length = lr->lr_length; 1568 1569 /* If it's a dmu_sync() block, write the whole block */ 1570 if (lr->lr_common.lrc_reclen == sizeof (lr_write_t)) { 1571 uint64_t blocksize = BP_GET_LSIZE(&lr->lr_blkptr); 1572 if (length < blocksize) { 1573 offset -= offset % blocksize; 1574 length = blocksize; 1575 } 1576 } 1577 1578 if (bt->bt_magic == BSWAP_64(BT_MAGIC)) 1579 byteswap_uint64_array(bt, sizeof (*bt)); 1580 1581 if (bt->bt_magic != BT_MAGIC) 1582 bt = NULL; 1583 1584 ztest_object_lock(zd, lr->lr_foid, RL_READER); 1585 rl = ztest_range_lock(zd, lr->lr_foid, offset, length, RL_WRITER); 1586 1587 VERIFY3U(0, ==, dmu_bonus_hold(os, lr->lr_foid, FTAG, &db)); 1588 1589 dmu_object_info_from_db(db, &doi); 1590 1591 bbt = ztest_bt_bonus(db); 1592 ASSERT3U(bbt->bt_magic, ==, BT_MAGIC); 1593 gen = bbt->bt_gen; 1594 crtxg = bbt->bt_crtxg; 1595 lrtxg = lr->lr_common.lrc_txg; 1596 1597 tx = dmu_tx_create(os); 1598 1599 dmu_tx_hold_write(tx, lr->lr_foid, offset, length); 1600 1601 if (ztest_random(8) == 0 && length == doi.doi_data_block_size && 1602 P2PHASE(offset, length) == 0) 1603 abuf = dmu_request_arcbuf(db, length); 1604 1605 txg = ztest_tx_assign(tx, TXG_WAIT, FTAG); 1606 if (txg == 0) { 1607 if (abuf != NULL) 1608 dmu_return_arcbuf(abuf); 1609 dmu_buf_rele(db, FTAG); 1610 ztest_range_unlock(rl); 1611 ztest_object_unlock(zd, lr->lr_foid); 1612 return (ENOSPC); 1613 } 1614 1615 if (bt != NULL) { 1616 /* 1617 * Usually, verify the old data before writing new data -- 1618 * but not always, because we also want to verify correct 1619 * behavior when the data was not recently read into cache. 1620 */ 1621 ASSERT(offset % doi.doi_data_block_size == 0); 1622 if (ztest_random(4) != 0) { 1623 int prefetch = ztest_random(2) ? 1624 DMU_READ_PREFETCH : DMU_READ_NO_PREFETCH; 1625 ztest_block_tag_t rbt; 1626 1627 VERIFY(dmu_read(os, lr->lr_foid, offset, 1628 sizeof (rbt), &rbt, prefetch) == 0); 1629 if (rbt.bt_magic == BT_MAGIC) { 1630 ztest_bt_verify(&rbt, os, lr->lr_foid, 1631 offset, gen, txg, crtxg); 1632 } 1633 } 1634 1635 /* 1636 * Writes can appear to be newer than the bonus buffer because 1637 * the ztest_get_data() callback does a dmu_read() of the 1638 * open-context data, which may be different than the data 1639 * as it was when the write was generated. 1640 */ 1641 if (zd->zd_zilog->zl_replay) { 1642 ztest_bt_verify(bt, os, lr->lr_foid, offset, 1643 MAX(gen, bt->bt_gen), MAX(txg, lrtxg), 1644 bt->bt_crtxg); 1645 } 1646 1647 /* 1648 * Set the bt's gen/txg to the bonus buffer's gen/txg 1649 * so that all of the usual ASSERTs will work. 1650 */ 1651 ztest_bt_generate(bt, os, lr->lr_foid, offset, gen, txg, crtxg); 1652 } 1653 1654 if (abuf == NULL) { 1655 dmu_write(os, lr->lr_foid, offset, length, data, tx); 1656 } else { 1657 bcopy(data, abuf->b_data, length); 1658 dmu_assign_arcbuf(db, offset, abuf, tx); 1659 } 1660 1661 (void) ztest_log_write(zd, tx, lr); 1662 1663 dmu_buf_rele(db, FTAG); 1664 1665 dmu_tx_commit(tx); 1666 1667 ztest_range_unlock(rl); 1668 ztest_object_unlock(zd, lr->lr_foid); 1669 1670 return (0); 1671 } 1672 1673 static int 1674 ztest_replay_truncate(ztest_ds_t *zd, lr_truncate_t *lr, boolean_t byteswap) 1675 { 1676 objset_t *os = zd->zd_os; 1677 dmu_tx_t *tx; 1678 uint64_t txg; 1679 rl_t *rl; 1680 1681 if (byteswap) 1682 byteswap_uint64_array(lr, sizeof (*lr)); 1683 1684 ztest_object_lock(zd, lr->lr_foid, RL_READER); 1685 rl = ztest_range_lock(zd, lr->lr_foid, lr->lr_offset, lr->lr_length, 1686 RL_WRITER); 1687 1688 tx = dmu_tx_create(os); 1689 1690 dmu_tx_hold_free(tx, lr->lr_foid, lr->lr_offset, lr->lr_length); 1691 1692 txg = ztest_tx_assign(tx, TXG_WAIT, FTAG); 1693 if (txg == 0) { 1694 ztest_range_unlock(rl); 1695 ztest_object_unlock(zd, lr->lr_foid); 1696 return (ENOSPC); 1697 } 1698 1699 VERIFY(dmu_free_range(os, lr->lr_foid, lr->lr_offset, 1700 lr->lr_length, tx) == 0); 1701 1702 (void) ztest_log_truncate(zd, tx, lr); 1703 1704 dmu_tx_commit(tx); 1705 1706 ztest_range_unlock(rl); 1707 ztest_object_unlock(zd, lr->lr_foid); 1708 1709 return (0); 1710 } 1711 1712 static int 1713 ztest_replay_setattr(ztest_ds_t *zd, lr_setattr_t *lr, boolean_t byteswap) 1714 { 1715 objset_t *os = zd->zd_os; 1716 dmu_tx_t *tx; 1717 dmu_buf_t *db; 1718 ztest_block_tag_t *bbt; 1719 uint64_t txg, lrtxg, crtxg; 1720 1721 if (byteswap) 1722 byteswap_uint64_array(lr, sizeof (*lr)); 1723 1724 ztest_object_lock(zd, lr->lr_foid, RL_WRITER); 1725 1726 VERIFY3U(0, ==, dmu_bonus_hold(os, lr->lr_foid, FTAG, &db)); 1727 1728 tx = dmu_tx_create(os); 1729 dmu_tx_hold_bonus(tx, lr->lr_foid); 1730 1731 txg = ztest_tx_assign(tx, TXG_WAIT, FTAG); 1732 if (txg == 0) { 1733 dmu_buf_rele(db, FTAG); 1734 ztest_object_unlock(zd, lr->lr_foid); 1735 return (ENOSPC); 1736 } 1737 1738 bbt = ztest_bt_bonus(db); 1739 ASSERT3U(bbt->bt_magic, ==, BT_MAGIC); 1740 crtxg = bbt->bt_crtxg; 1741 lrtxg = lr->lr_common.lrc_txg; 1742 1743 if (zd->zd_zilog->zl_replay) { 1744 ASSERT(lr->lr_size != 0); 1745 ASSERT(lr->lr_mode != 0); 1746 ASSERT(lrtxg != 0); 1747 } else { 1748 /* 1749 * Randomly change the size and increment the generation. 1750 */ 1751 lr->lr_size = (ztest_random(db->db_size / sizeof (*bbt)) + 1) * 1752 sizeof (*bbt); 1753 lr->lr_mode = bbt->bt_gen + 1; 1754 ASSERT(lrtxg == 0); 1755 } 1756 1757 /* 1758 * Verify that the current bonus buffer is not newer than our txg. 1759 */ 1760 ztest_bt_verify(bbt, os, lr->lr_foid, -1ULL, lr->lr_mode, 1761 MAX(txg, lrtxg), crtxg); 1762 1763 dmu_buf_will_dirty(db, tx); 1764 1765 ASSERT3U(lr->lr_size, >=, sizeof (*bbt)); 1766 ASSERT3U(lr->lr_size, <=, db->db_size); 1767 VERIFY0(dmu_set_bonus(db, lr->lr_size, tx)); 1768 bbt = ztest_bt_bonus(db); 1769 1770 ztest_bt_generate(bbt, os, lr->lr_foid, -1ULL, lr->lr_mode, txg, crtxg); 1771 1772 dmu_buf_rele(db, FTAG); 1773 1774 (void) ztest_log_setattr(zd, tx, lr); 1775 1776 dmu_tx_commit(tx); 1777 1778 ztest_object_unlock(zd, lr->lr_foid); 1779 1780 return (0); 1781 } 1782 1783 zil_replay_func_t *ztest_replay_vector[TX_MAX_TYPE] = { 1784 NULL, /* 0 no such transaction type */ 1785 ztest_replay_create, /* TX_CREATE */ 1786 NULL, /* TX_MKDIR */ 1787 NULL, /* TX_MKXATTR */ 1788 NULL, /* TX_SYMLINK */ 1789 ztest_replay_remove, /* TX_REMOVE */ 1790 NULL, /* TX_RMDIR */ 1791 NULL, /* TX_LINK */ 1792 NULL, /* TX_RENAME */ 1793 ztest_replay_write, /* TX_WRITE */ 1794 ztest_replay_truncate, /* TX_TRUNCATE */ 1795 ztest_replay_setattr, /* TX_SETATTR */ 1796 NULL, /* TX_ACL */ 1797 NULL, /* TX_CREATE_ACL */ 1798 NULL, /* TX_CREATE_ATTR */ 1799 NULL, /* TX_CREATE_ACL_ATTR */ 1800 NULL, /* TX_MKDIR_ACL */ 1801 NULL, /* TX_MKDIR_ATTR */ 1802 NULL, /* TX_MKDIR_ACL_ATTR */ 1803 NULL, /* TX_WRITE2 */ 1804 }; 1805 1806 /* 1807 * ZIL get_data callbacks 1808 */ 1809 1810 static void 1811 ztest_get_done(zgd_t *zgd, int error) 1812 { 1813 ztest_ds_t *zd = zgd->zgd_private; 1814 uint64_t object = zgd->zgd_rl->rl_object; 1815 1816 if (zgd->zgd_db) 1817 dmu_buf_rele(zgd->zgd_db, zgd); 1818 1819 ztest_range_unlock(zgd->zgd_rl); 1820 ztest_object_unlock(zd, object); 1821 1822 if (error == 0 && zgd->zgd_bp) 1823 zil_add_block(zgd->zgd_zilog, zgd->zgd_bp); 1824 1825 umem_free(zgd, sizeof (*zgd)); 1826 } 1827 1828 static int 1829 ztest_get_data(void *arg, lr_write_t *lr, char *buf, zio_t *zio) 1830 { 1831 ztest_ds_t *zd = arg; 1832 objset_t *os = zd->zd_os; 1833 uint64_t object = lr->lr_foid; 1834 uint64_t offset = lr->lr_offset; 1835 uint64_t size = lr->lr_length; 1836 blkptr_t *bp = &lr->lr_blkptr; 1837 uint64_t txg = lr->lr_common.lrc_txg; 1838 uint64_t crtxg; 1839 dmu_object_info_t doi; 1840 dmu_buf_t *db; 1841 zgd_t *zgd; 1842 int error; 1843 1844 ztest_object_lock(zd, object, RL_READER); 1845 error = dmu_bonus_hold(os, object, FTAG, &db); 1846 if (error) { 1847 ztest_object_unlock(zd, object); 1848 return (error); 1849 } 1850 1851 crtxg = ztest_bt_bonus(db)->bt_crtxg; 1852 1853 if (crtxg == 0 || crtxg > txg) { 1854 dmu_buf_rele(db, FTAG); 1855 ztest_object_unlock(zd, object); 1856 return (ENOENT); 1857 } 1858 1859 dmu_object_info_from_db(db, &doi); 1860 dmu_buf_rele(db, FTAG); 1861 db = NULL; 1862 1863 zgd = umem_zalloc(sizeof (*zgd), UMEM_NOFAIL); 1864 zgd->zgd_zilog = zd->zd_zilog; 1865 zgd->zgd_private = zd; 1866 1867 if (buf != NULL) { /* immediate write */ 1868 zgd->zgd_rl = ztest_range_lock(zd, object, offset, size, 1869 RL_READER); 1870 1871 error = dmu_read(os, object, offset, size, buf, 1872 DMU_READ_NO_PREFETCH); 1873 ASSERT(error == 0); 1874 } else { 1875 size = doi.doi_data_block_size; 1876 if (ISP2(size)) { 1877 offset = P2ALIGN(offset, size); 1878 } else { 1879 ASSERT(offset < size); 1880 offset = 0; 1881 } 1882 1883 zgd->zgd_rl = ztest_range_lock(zd, object, offset, size, 1884 RL_READER); 1885 1886 error = dmu_buf_hold(os, object, offset, zgd, &db, 1887 DMU_READ_NO_PREFETCH); 1888 1889 if (error == 0) { 1890 blkptr_t *obp = dmu_buf_get_blkptr(db); 1891 if (obp) { 1892 ASSERT(BP_IS_HOLE(bp)); 1893 *bp = *obp; 1894 } 1895 1896 zgd->zgd_db = db; 1897 zgd->zgd_bp = bp; 1898 1899 ASSERT(db->db_offset == offset); 1900 ASSERT(db->db_size == size); 1901 1902 error = dmu_sync(zio, lr->lr_common.lrc_txg, 1903 ztest_get_done, zgd); 1904 1905 if (error == 0) 1906 return (0); 1907 } 1908 } 1909 1910 ztest_get_done(zgd, error); 1911 1912 return (error); 1913 } 1914 1915 static void * 1916 ztest_lr_alloc(size_t lrsize, char *name) 1917 { 1918 char *lr; 1919 size_t namesize = name ? strlen(name) + 1 : 0; 1920 1921 lr = umem_zalloc(lrsize + namesize, UMEM_NOFAIL); 1922 1923 if (name) 1924 bcopy(name, lr + lrsize, namesize); 1925 1926 return (lr); 1927 } 1928 1929 void 1930 ztest_lr_free(void *lr, size_t lrsize, char *name) 1931 { 1932 size_t namesize = name ? strlen(name) + 1 : 0; 1933 1934 umem_free(lr, lrsize + namesize); 1935 } 1936 1937 /* 1938 * Lookup a bunch of objects. Returns the number of objects not found. 1939 */ 1940 static int 1941 ztest_lookup(ztest_ds_t *zd, ztest_od_t *od, int count) 1942 { 1943 int missing = 0; 1944 int error; 1945 1946 ASSERT(_mutex_held(&zd->zd_dirobj_lock)); 1947 1948 for (int i = 0; i < count; i++, od++) { 1949 od->od_object = 0; 1950 error = zap_lookup(zd->zd_os, od->od_dir, od->od_name, 1951 sizeof (uint64_t), 1, &od->od_object); 1952 if (error) { 1953 ASSERT(error == ENOENT); 1954 ASSERT(od->od_object == 0); 1955 missing++; 1956 } else { 1957 dmu_buf_t *db; 1958 ztest_block_tag_t *bbt; 1959 dmu_object_info_t doi; 1960 1961 ASSERT(od->od_object != 0); 1962 ASSERT(missing == 0); /* there should be no gaps */ 1963 1964 ztest_object_lock(zd, od->od_object, RL_READER); 1965 VERIFY3U(0, ==, dmu_bonus_hold(zd->zd_os, 1966 od->od_object, FTAG, &db)); 1967 dmu_object_info_from_db(db, &doi); 1968 bbt = ztest_bt_bonus(db); 1969 ASSERT3U(bbt->bt_magic, ==, BT_MAGIC); 1970 od->od_type = doi.doi_type; 1971 od->od_blocksize = doi.doi_data_block_size; 1972 od->od_gen = bbt->bt_gen; 1973 dmu_buf_rele(db, FTAG); 1974 ztest_object_unlock(zd, od->od_object); 1975 } 1976 } 1977 1978 return (missing); 1979 } 1980 1981 static int 1982 ztest_create(ztest_ds_t *zd, ztest_od_t *od, int count) 1983 { 1984 int missing = 0; 1985 1986 ASSERT(_mutex_held(&zd->zd_dirobj_lock)); 1987 1988 for (int i = 0; i < count; i++, od++) { 1989 if (missing) { 1990 od->od_object = 0; 1991 missing++; 1992 continue; 1993 } 1994 1995 lr_create_t *lr = ztest_lr_alloc(sizeof (*lr), od->od_name); 1996 1997 lr->lr_doid = od->od_dir; 1998 lr->lr_foid = 0; /* 0 to allocate, > 0 to claim */ 1999 lr->lrz_type = od->od_crtype; 2000 lr->lrz_blocksize = od->od_crblocksize; 2001 lr->lrz_ibshift = ztest_random_ibshift(); 2002 lr->lrz_bonustype = DMU_OT_UINT64_OTHER; 2003 lr->lrz_bonuslen = dmu_bonus_max(); 2004 lr->lr_gen = od->od_crgen; 2005 lr->lr_crtime[0] = time(NULL); 2006 2007 if (ztest_replay_create(zd, lr, B_FALSE) != 0) { 2008 ASSERT(missing == 0); 2009 od->od_object = 0; 2010 missing++; 2011 } else { 2012 od->od_object = lr->lr_foid; 2013 od->od_type = od->od_crtype; 2014 od->od_blocksize = od->od_crblocksize; 2015 od->od_gen = od->od_crgen; 2016 ASSERT(od->od_object != 0); 2017 } 2018 2019 ztest_lr_free(lr, sizeof (*lr), od->od_name); 2020 } 2021 2022 return (missing); 2023 } 2024 2025 static int 2026 ztest_remove(ztest_ds_t *zd, ztest_od_t *od, int count) 2027 { 2028 int missing = 0; 2029 int error; 2030 2031 ASSERT(_mutex_held(&zd->zd_dirobj_lock)); 2032 2033 od += count - 1; 2034 2035 for (int i = count - 1; i >= 0; i--, od--) { 2036 if (missing) { 2037 missing++; 2038 continue; 2039 } 2040 2041 /* 2042 * No object was found. 2043 */ 2044 if (od->od_object == 0) 2045 continue; 2046 2047 lr_remove_t *lr = ztest_lr_alloc(sizeof (*lr), od->od_name); 2048 2049 lr->lr_doid = od->od_dir; 2050 2051 if ((error = ztest_replay_remove(zd, lr, B_FALSE)) != 0) { 2052 ASSERT3U(error, ==, ENOSPC); 2053 missing++; 2054 } else { 2055 od->od_object = 0; 2056 } 2057 ztest_lr_free(lr, sizeof (*lr), od->od_name); 2058 } 2059 2060 return (missing); 2061 } 2062 2063 static int 2064 ztest_write(ztest_ds_t *zd, uint64_t object, uint64_t offset, uint64_t size, 2065 void *data) 2066 { 2067 lr_write_t *lr; 2068 int error; 2069 2070 lr = ztest_lr_alloc(sizeof (*lr) + size, NULL); 2071 2072 lr->lr_foid = object; 2073 lr->lr_offset = offset; 2074 lr->lr_length = size; 2075 lr->lr_blkoff = 0; 2076 BP_ZERO(&lr->lr_blkptr); 2077 2078 bcopy(data, lr + 1, size); 2079 2080 error = ztest_replay_write(zd, lr, B_FALSE); 2081 2082 ztest_lr_free(lr, sizeof (*lr) + size, NULL); 2083 2084 return (error); 2085 } 2086 2087 static int 2088 ztest_truncate(ztest_ds_t *zd, uint64_t object, uint64_t offset, uint64_t size) 2089 { 2090 lr_truncate_t *lr; 2091 int error; 2092 2093 lr = ztest_lr_alloc(sizeof (*lr), NULL); 2094 2095 lr->lr_foid = object; 2096 lr->lr_offset = offset; 2097 lr->lr_length = size; 2098 2099 error = ztest_replay_truncate(zd, lr, B_FALSE); 2100 2101 ztest_lr_free(lr, sizeof (*lr), NULL); 2102 2103 return (error); 2104 } 2105 2106 static int 2107 ztest_setattr(ztest_ds_t *zd, uint64_t object) 2108 { 2109 lr_setattr_t *lr; 2110 int error; 2111 2112 lr = ztest_lr_alloc(sizeof (*lr), NULL); 2113 2114 lr->lr_foid = object; 2115 lr->lr_size = 0; 2116 lr->lr_mode = 0; 2117 2118 error = ztest_replay_setattr(zd, lr, B_FALSE); 2119 2120 ztest_lr_free(lr, sizeof (*lr), NULL); 2121 2122 return (error); 2123 } 2124 2125 static void 2126 ztest_prealloc(ztest_ds_t *zd, uint64_t object, uint64_t offset, uint64_t size) 2127 { 2128 objset_t *os = zd->zd_os; 2129 dmu_tx_t *tx; 2130 uint64_t txg; 2131 rl_t *rl; 2132 2133 txg_wait_synced(dmu_objset_pool(os), 0); 2134 2135 ztest_object_lock(zd, object, RL_READER); 2136 rl = ztest_range_lock(zd, object, offset, size, RL_WRITER); 2137 2138 tx = dmu_tx_create(os); 2139 2140 dmu_tx_hold_write(tx, object, offset, size); 2141 2142 txg = ztest_tx_assign(tx, TXG_WAIT, FTAG); 2143 2144 if (txg != 0) { 2145 dmu_prealloc(os, object, offset, size, tx); 2146 dmu_tx_commit(tx); 2147 txg_wait_synced(dmu_objset_pool(os), txg); 2148 } else { 2149 (void) dmu_free_long_range(os, object, offset, size); 2150 } 2151 2152 ztest_range_unlock(rl); 2153 ztest_object_unlock(zd, object); 2154 } 2155 2156 static void 2157 ztest_io(ztest_ds_t *zd, uint64_t object, uint64_t offset) 2158 { 2159 int err; 2160 ztest_block_tag_t wbt; 2161 dmu_object_info_t doi; 2162 enum ztest_io_type io_type; 2163 uint64_t blocksize; 2164 void *data; 2165 2166 VERIFY(dmu_object_info(zd->zd_os, object, &doi) == 0); 2167 blocksize = doi.doi_data_block_size; 2168 data = umem_alloc(blocksize, UMEM_NOFAIL); 2169 2170 /* 2171 * Pick an i/o type at random, biased toward writing block tags. 2172 */ 2173 io_type = ztest_random(ZTEST_IO_TYPES); 2174 if (ztest_random(2) == 0) 2175 io_type = ZTEST_IO_WRITE_TAG; 2176 2177 (void) rw_rdlock(&zd->zd_zilog_lock); 2178 2179 switch (io_type) { 2180 2181 case ZTEST_IO_WRITE_TAG: 2182 ztest_bt_generate(&wbt, zd->zd_os, object, offset, 0, 0, 0); 2183 (void) ztest_write(zd, object, offset, sizeof (wbt), &wbt); 2184 break; 2185 2186 case ZTEST_IO_WRITE_PATTERN: 2187 (void) memset(data, 'a' + (object + offset) % 5, blocksize); 2188 if (ztest_random(2) == 0) { 2189 /* 2190 * Induce fletcher2 collisions to ensure that 2191 * zio_ddt_collision() detects and resolves them 2192 * when using fletcher2-verify for deduplication. 2193 */ 2194 ((uint64_t *)data)[0] ^= 1ULL << 63; 2195 ((uint64_t *)data)[4] ^= 1ULL << 63; 2196 } 2197 (void) ztest_write(zd, object, offset, blocksize, data); 2198 break; 2199 2200 case ZTEST_IO_WRITE_ZEROES: 2201 bzero(data, blocksize); 2202 (void) ztest_write(zd, object, offset, blocksize, data); 2203 break; 2204 2205 case ZTEST_IO_TRUNCATE: 2206 (void) ztest_truncate(zd, object, offset, blocksize); 2207 break; 2208 2209 case ZTEST_IO_SETATTR: 2210 (void) ztest_setattr(zd, object); 2211 break; 2212 2213 case ZTEST_IO_REWRITE: 2214 (void) rw_rdlock(&ztest_name_lock); 2215 err = ztest_dsl_prop_set_uint64(zd->zd_name, 2216 ZFS_PROP_CHECKSUM, spa_dedup_checksum(ztest_spa), 2217 B_FALSE); 2218 VERIFY(err == 0 || err == ENOSPC); 2219 err = ztest_dsl_prop_set_uint64(zd->zd_name, 2220 ZFS_PROP_COMPRESSION, 2221 ztest_random_dsl_prop(ZFS_PROP_COMPRESSION), 2222 B_FALSE); 2223 VERIFY(err == 0 || err == ENOSPC); 2224 (void) rw_unlock(&ztest_name_lock); 2225 2226 VERIFY0(dmu_read(zd->zd_os, object, offset, blocksize, data, 2227 DMU_READ_NO_PREFETCH)); 2228 2229 (void) ztest_write(zd, object, offset, blocksize, data); 2230 break; 2231 } 2232 2233 (void) rw_unlock(&zd->zd_zilog_lock); 2234 2235 umem_free(data, blocksize); 2236 } 2237 2238 /* 2239 * Initialize an object description template. 2240 */ 2241 static void 2242 ztest_od_init(ztest_od_t *od, uint64_t id, char *tag, uint64_t index, 2243 dmu_object_type_t type, uint64_t blocksize, uint64_t gen) 2244 { 2245 od->od_dir = ZTEST_DIROBJ; 2246 od->od_object = 0; 2247 2248 od->od_crtype = type; 2249 od->od_crblocksize = blocksize ? blocksize : ztest_random_blocksize(); 2250 od->od_crgen = gen; 2251 2252 od->od_type = DMU_OT_NONE; 2253 od->od_blocksize = 0; 2254 od->od_gen = 0; 2255 2256 (void) snprintf(od->od_name, sizeof (od->od_name), "%s(%lld)[%llu]", 2257 tag, (int64_t)id, index); 2258 } 2259 2260 /* 2261 * Lookup or create the objects for a test using the od template. 2262 * If the objects do not all exist, or if 'remove' is specified, 2263 * remove any existing objects and create new ones. Otherwise, 2264 * use the existing objects. 2265 */ 2266 static int 2267 ztest_object_init(ztest_ds_t *zd, ztest_od_t *od, size_t size, boolean_t remove) 2268 { 2269 int count = size / sizeof (*od); 2270 int rv = 0; 2271 2272 VERIFY(mutex_lock(&zd->zd_dirobj_lock) == 0); 2273 if ((ztest_lookup(zd, od, count) != 0 || remove) && 2274 (ztest_remove(zd, od, count) != 0 || 2275 ztest_create(zd, od, count) != 0)) 2276 rv = -1; 2277 zd->zd_od = od; 2278 VERIFY(mutex_unlock(&zd->zd_dirobj_lock) == 0); 2279 2280 return (rv); 2281 } 2282 2283 /* ARGSUSED */ 2284 void 2285 ztest_zil_commit(ztest_ds_t *zd, uint64_t id) 2286 { 2287 zilog_t *zilog = zd->zd_zilog; 2288 2289 (void) rw_rdlock(&zd->zd_zilog_lock); 2290 2291 zil_commit(zilog, ztest_random(ZTEST_OBJECTS)); 2292 2293 /* 2294 * Remember the committed values in zd, which is in parent/child 2295 * shared memory. If we die, the next iteration of ztest_run() 2296 * will verify that the log really does contain this record. 2297 */ 2298 mutex_enter(&zilog->zl_lock); 2299 ASSERT(zd->zd_shared != NULL); 2300 ASSERT3U(zd->zd_shared->zd_seq, <=, zilog->zl_commit_lr_seq); 2301 zd->zd_shared->zd_seq = zilog->zl_commit_lr_seq; 2302 mutex_exit(&zilog->zl_lock); 2303 2304 (void) rw_unlock(&zd->zd_zilog_lock); 2305 } 2306 2307 /* 2308 * This function is designed to simulate the operations that occur during a 2309 * mount/unmount operation. We hold the dataset across these operations in an 2310 * attempt to expose any implicit assumptions about ZIL management. 2311 */ 2312 /* ARGSUSED */ 2313 void 2314 ztest_zil_remount(ztest_ds_t *zd, uint64_t id) 2315 { 2316 objset_t *os = zd->zd_os; 2317 2318 /* 2319 * We grab the zd_dirobj_lock to ensure that no other thread is 2320 * updating the zil (i.e. adding in-memory log records) and the 2321 * zd_zilog_lock to block any I/O. 2322 */ 2323 VERIFY0(mutex_lock(&zd->zd_dirobj_lock)); 2324 (void) rw_wrlock(&zd->zd_zilog_lock); 2325 2326 /* zfsvfs_teardown() */ 2327 zil_close(zd->zd_zilog); 2328 2329 /* zfsvfs_setup() */ 2330 VERIFY(zil_open(os, ztest_get_data) == zd->zd_zilog); 2331 zil_replay(os, zd, ztest_replay_vector); 2332 2333 (void) rw_unlock(&zd->zd_zilog_lock); 2334 VERIFY(mutex_unlock(&zd->zd_dirobj_lock) == 0); 2335 } 2336 2337 /* 2338 * Verify that we can't destroy an active pool, create an existing pool, 2339 * or create a pool with a bad vdev spec. 2340 */ 2341 /* ARGSUSED */ 2342 void 2343 ztest_spa_create_destroy(ztest_ds_t *zd, uint64_t id) 2344 { 2345 ztest_shared_opts_t *zo = &ztest_opts; 2346 spa_t *spa; 2347 nvlist_t *nvroot; 2348 2349 /* 2350 * Attempt to create using a bad file. 2351 */ 2352 nvroot = make_vdev_root("/dev/bogus", NULL, NULL, 0, 0, 0, 0, 0, 1); 2353 VERIFY3U(ENOENT, ==, 2354 spa_create("ztest_bad_file", nvroot, NULL, NULL)); 2355 nvlist_free(nvroot); 2356 2357 /* 2358 * Attempt to create using a bad mirror. 2359 */ 2360 nvroot = make_vdev_root("/dev/bogus", NULL, NULL, 0, 0, 0, 0, 2, 1); 2361 VERIFY3U(ENOENT, ==, 2362 spa_create("ztest_bad_mirror", nvroot, NULL, NULL)); 2363 nvlist_free(nvroot); 2364 2365 /* 2366 * Attempt to create an existing pool. It shouldn't matter 2367 * what's in the nvroot; we should fail with EEXIST. 2368 */ 2369 (void) rw_rdlock(&ztest_name_lock); 2370 nvroot = make_vdev_root("/dev/bogus", NULL, NULL, 0, 0, 0, 0, 0, 1); 2371 VERIFY3U(EEXIST, ==, spa_create(zo->zo_pool, nvroot, NULL, NULL)); 2372 nvlist_free(nvroot); 2373 VERIFY3U(0, ==, spa_open(zo->zo_pool, &spa, FTAG)); 2374 VERIFY3U(EBUSY, ==, spa_destroy(zo->zo_pool)); 2375 spa_close(spa, FTAG); 2376 2377 (void) rw_unlock(&ztest_name_lock); 2378 } 2379 2380 /* ARGSUSED */ 2381 void 2382 ztest_spa_upgrade(ztest_ds_t *zd, uint64_t id) 2383 { 2384 spa_t *spa; 2385 uint64_t initial_version = SPA_VERSION_INITIAL; 2386 uint64_t version, newversion; 2387 nvlist_t *nvroot, *props; 2388 char *name; 2389 2390 VERIFY0(mutex_lock(&ztest_vdev_lock)); 2391 name = kmem_asprintf("%s_upgrade", ztest_opts.zo_pool); 2392 2393 /* 2394 * Clean up from previous runs. 2395 */ 2396 (void) spa_destroy(name); 2397 2398 nvroot = make_vdev_root(NULL, NULL, name, ztest_opts.zo_vdev_size, 0, 2399 0, ztest_opts.zo_raidz, ztest_opts.zo_mirrors, 1); 2400 2401 /* 2402 * If we're configuring a RAIDZ device then make sure that the 2403 * the initial version is capable of supporting that feature. 2404 */ 2405 switch (ztest_opts.zo_raidz_parity) { 2406 case 0: 2407 case 1: 2408 initial_version = SPA_VERSION_INITIAL; 2409 break; 2410 case 2: 2411 initial_version = SPA_VERSION_RAIDZ2; 2412 break; 2413 case 3: 2414 initial_version = SPA_VERSION_RAIDZ3; 2415 break; 2416 } 2417 2418 /* 2419 * Create a pool with a spa version that can be upgraded. Pick 2420 * a value between initial_version and SPA_VERSION_BEFORE_FEATURES. 2421 */ 2422 do { 2423 version = ztest_random_spa_version(initial_version); 2424 } while (version > SPA_VERSION_BEFORE_FEATURES); 2425 2426 props = fnvlist_alloc(); 2427 fnvlist_add_uint64(props, 2428 zpool_prop_to_name(ZPOOL_PROP_VERSION), version); 2429 VERIFY0(spa_create(name, nvroot, props, NULL)); 2430 fnvlist_free(nvroot); 2431 fnvlist_free(props); 2432 2433 VERIFY0(spa_open(name, &spa, FTAG)); 2434 VERIFY3U(spa_version(spa), ==, version); 2435 newversion = ztest_random_spa_version(version + 1); 2436 2437 if (ztest_opts.zo_verbose >= 4) { 2438 (void) printf("upgrading spa version from %llu to %llu\n", 2439 (u_longlong_t)version, (u_longlong_t)newversion); 2440 } 2441 2442 spa_upgrade(spa, newversion); 2443 VERIFY3U(spa_version(spa), >, version); 2444 VERIFY3U(spa_version(spa), ==, fnvlist_lookup_uint64(spa->spa_config, 2445 zpool_prop_to_name(ZPOOL_PROP_VERSION))); 2446 spa_close(spa, FTAG); 2447 2448 strfree(name); 2449 VERIFY0(mutex_unlock(&ztest_vdev_lock)); 2450 } 2451 2452 static vdev_t * 2453 vdev_lookup_by_path(vdev_t *vd, const char *path) 2454 { 2455 vdev_t *mvd; 2456 2457 if (vd->vdev_path != NULL && strcmp(path, vd->vdev_path) == 0) 2458 return (vd); 2459 2460 for (int c = 0; c < vd->vdev_children; c++) 2461 if ((mvd = vdev_lookup_by_path(vd->vdev_child[c], path)) != 2462 NULL) 2463 return (mvd); 2464 2465 return (NULL); 2466 } 2467 2468 /* 2469 * Find the first available hole which can be used as a top-level. 2470 */ 2471 int 2472 find_vdev_hole(spa_t *spa) 2473 { 2474 vdev_t *rvd = spa->spa_root_vdev; 2475 int c; 2476 2477 ASSERT(spa_config_held(spa, SCL_VDEV, RW_READER) == SCL_VDEV); 2478 2479 for (c = 0; c < rvd->vdev_children; c++) { 2480 vdev_t *cvd = rvd->vdev_child[c]; 2481 2482 if (cvd->vdev_ishole) 2483 break; 2484 } 2485 return (c); 2486 } 2487 2488 /* 2489 * Verify that vdev_add() works as expected. 2490 */ 2491 /* ARGSUSED */ 2492 void 2493 ztest_vdev_add_remove(ztest_ds_t *zd, uint64_t id) 2494 { 2495 ztest_shared_t *zs = ztest_shared; 2496 spa_t *spa = ztest_spa; 2497 uint64_t leaves; 2498 uint64_t guid; 2499 nvlist_t *nvroot; 2500 int error; 2501 2502 VERIFY(mutex_lock(&ztest_vdev_lock) == 0); 2503 leaves = MAX(zs->zs_mirrors + zs->zs_splits, 1) * ztest_opts.zo_raidz; 2504 2505 spa_config_enter(spa, SCL_VDEV, FTAG, RW_READER); 2506 2507 ztest_shared->zs_vdev_next_leaf = find_vdev_hole(spa) * leaves; 2508 2509 /* 2510 * If we have slogs then remove them 1/4 of the time. 2511 */ 2512 if (spa_has_slogs(spa) && ztest_random(4) == 0) { 2513 /* 2514 * Grab the guid from the head of the log class rotor. 2515 */ 2516 guid = spa_log_class(spa)->mc_rotor->mg_vd->vdev_guid; 2517 2518 spa_config_exit(spa, SCL_VDEV, FTAG); 2519 2520 /* 2521 * We have to grab the zs_name_lock as writer to 2522 * prevent a race between removing a slog (dmu_objset_find) 2523 * and destroying a dataset. Removing the slog will 2524 * grab a reference on the dataset which may cause 2525 * dmu_objset_destroy() to fail with EBUSY thus 2526 * leaving the dataset in an inconsistent state. 2527 */ 2528 VERIFY(rw_wrlock(&ztest_name_lock) == 0); 2529 error = spa_vdev_remove(spa, guid, B_FALSE); 2530 VERIFY(rw_unlock(&ztest_name_lock) == 0); 2531 2532 if (error && error != EEXIST) 2533 fatal(0, "spa_vdev_remove() = %d", error); 2534 } else { 2535 spa_config_exit(spa, SCL_VDEV, FTAG); 2536 2537 /* 2538 * Make 1/4 of the devices be log devices. 2539 */ 2540 nvroot = make_vdev_root(NULL, NULL, NULL, 2541 ztest_opts.zo_vdev_size, 0, 2542 ztest_random(4) == 0, ztest_opts.zo_raidz, 2543 zs->zs_mirrors, 1); 2544 2545 error = spa_vdev_add(spa, nvroot); 2546 nvlist_free(nvroot); 2547 2548 if (error == ENOSPC) 2549 ztest_record_enospc("spa_vdev_add"); 2550 else if (error != 0) 2551 fatal(0, "spa_vdev_add() = %d", error); 2552 } 2553 2554 VERIFY(mutex_unlock(&ztest_vdev_lock) == 0); 2555 } 2556 2557 /* 2558 * Verify that adding/removing aux devices (l2arc, hot spare) works as expected. 2559 */ 2560 /* ARGSUSED */ 2561 void 2562 ztest_vdev_aux_add_remove(ztest_ds_t *zd, uint64_t id) 2563 { 2564 ztest_shared_t *zs = ztest_shared; 2565 spa_t *spa = ztest_spa; 2566 vdev_t *rvd = spa->spa_root_vdev; 2567 spa_aux_vdev_t *sav; 2568 char *aux; 2569 uint64_t guid = 0; 2570 int error; 2571 2572 if (ztest_random(2) == 0) { 2573 sav = &spa->spa_spares; 2574 aux = ZPOOL_CONFIG_SPARES; 2575 } else { 2576 sav = &spa->spa_l2cache; 2577 aux = ZPOOL_CONFIG_L2CACHE; 2578 } 2579 2580 VERIFY(mutex_lock(&ztest_vdev_lock) == 0); 2581 2582 spa_config_enter(spa, SCL_VDEV, FTAG, RW_READER); 2583 2584 if (sav->sav_count != 0 && ztest_random(4) == 0) { 2585 /* 2586 * Pick a random device to remove. 2587 */ 2588 guid = sav->sav_vdevs[ztest_random(sav->sav_count)]->vdev_guid; 2589 } else { 2590 /* 2591 * Find an unused device we can add. 2592 */ 2593 zs->zs_vdev_aux = 0; 2594 for (;;) { 2595 char path[MAXPATHLEN]; 2596 int c; 2597 (void) snprintf(path, sizeof (path), ztest_aux_template, 2598 ztest_opts.zo_dir, ztest_opts.zo_pool, aux, 2599 zs->zs_vdev_aux); 2600 for (c = 0; c < sav->sav_count; c++) 2601 if (strcmp(sav->sav_vdevs[c]->vdev_path, 2602 path) == 0) 2603 break; 2604 if (c == sav->sav_count && 2605 vdev_lookup_by_path(rvd, path) == NULL) 2606 break; 2607 zs->zs_vdev_aux++; 2608 } 2609 } 2610 2611 spa_config_exit(spa, SCL_VDEV, FTAG); 2612 2613 if (guid == 0) { 2614 /* 2615 * Add a new device. 2616 */ 2617 nvlist_t *nvroot = make_vdev_root(NULL, aux, NULL, 2618 (ztest_opts.zo_vdev_size * 5) / 4, 0, 0, 0, 0, 1); 2619 error = spa_vdev_add(spa, nvroot); 2620 if (error != 0) 2621 fatal(0, "spa_vdev_add(%p) = %d", nvroot, error); 2622 nvlist_free(nvroot); 2623 } else { 2624 /* 2625 * Remove an existing device. Sometimes, dirty its 2626 * vdev state first to make sure we handle removal 2627 * of devices that have pending state changes. 2628 */ 2629 if (ztest_random(2) == 0) 2630 (void) vdev_online(spa, guid, 0, NULL); 2631 2632 error = spa_vdev_remove(spa, guid, B_FALSE); 2633 if (error != 0 && error != EBUSY) 2634 fatal(0, "spa_vdev_remove(%llu) = %d", guid, error); 2635 } 2636 2637 VERIFY(mutex_unlock(&ztest_vdev_lock) == 0); 2638 } 2639 2640 /* 2641 * split a pool if it has mirror tlvdevs 2642 */ 2643 /* ARGSUSED */ 2644 void 2645 ztest_split_pool(ztest_ds_t *zd, uint64_t id) 2646 { 2647 ztest_shared_t *zs = ztest_shared; 2648 spa_t *spa = ztest_spa; 2649 vdev_t *rvd = spa->spa_root_vdev; 2650 nvlist_t *tree, **child, *config, *split, **schild; 2651 uint_t c, children, schildren = 0, lastlogid = 0; 2652 int error = 0; 2653 2654 VERIFY(mutex_lock(&ztest_vdev_lock) == 0); 2655 2656 /* ensure we have a useable config; mirrors of raidz aren't supported */ 2657 if (zs->zs_mirrors < 3 || ztest_opts.zo_raidz > 1) { 2658 VERIFY(mutex_unlock(&ztest_vdev_lock) == 0); 2659 return; 2660 } 2661 2662 /* clean up the old pool, if any */ 2663 (void) spa_destroy("splitp"); 2664 2665 spa_config_enter(spa, SCL_VDEV, FTAG, RW_READER); 2666 2667 /* generate a config from the existing config */ 2668 mutex_enter(&spa->spa_props_lock); 2669 VERIFY(nvlist_lookup_nvlist(spa->spa_config, ZPOOL_CONFIG_VDEV_TREE, 2670 &tree) == 0); 2671 mutex_exit(&spa->spa_props_lock); 2672 2673 VERIFY(nvlist_lookup_nvlist_array(tree, ZPOOL_CONFIG_CHILDREN, &child, 2674 &children) == 0); 2675 2676 schild = malloc(rvd->vdev_children * sizeof (nvlist_t *)); 2677 for (c = 0; c < children; c++) { 2678 vdev_t *tvd = rvd->vdev_child[c]; 2679 nvlist_t **mchild; 2680 uint_t mchildren; 2681 2682 if (tvd->vdev_islog || tvd->vdev_ops == &vdev_hole_ops) { 2683 VERIFY(nvlist_alloc(&schild[schildren], NV_UNIQUE_NAME, 2684 0) == 0); 2685 VERIFY(nvlist_add_string(schild[schildren], 2686 ZPOOL_CONFIG_TYPE, VDEV_TYPE_HOLE) == 0); 2687 VERIFY(nvlist_add_uint64(schild[schildren], 2688 ZPOOL_CONFIG_IS_HOLE, 1) == 0); 2689 if (lastlogid == 0) 2690 lastlogid = schildren; 2691 ++schildren; 2692 continue; 2693 } 2694 lastlogid = 0; 2695 VERIFY(nvlist_lookup_nvlist_array(child[c], 2696 ZPOOL_CONFIG_CHILDREN, &mchild, &mchildren) == 0); 2697 VERIFY(nvlist_dup(mchild[0], &schild[schildren++], 0) == 0); 2698 } 2699 2700 /* OK, create a config that can be used to split */ 2701 VERIFY(nvlist_alloc(&split, NV_UNIQUE_NAME, 0) == 0); 2702 VERIFY(nvlist_add_string(split, ZPOOL_CONFIG_TYPE, 2703 VDEV_TYPE_ROOT) == 0); 2704 VERIFY(nvlist_add_nvlist_array(split, ZPOOL_CONFIG_CHILDREN, schild, 2705 lastlogid != 0 ? lastlogid : schildren) == 0); 2706 2707 VERIFY(nvlist_alloc(&config, NV_UNIQUE_NAME, 0) == 0); 2708 VERIFY(nvlist_add_nvlist(config, ZPOOL_CONFIG_VDEV_TREE, split) == 0); 2709 2710 for (c = 0; c < schildren; c++) 2711 nvlist_free(schild[c]); 2712 free(schild); 2713 nvlist_free(split); 2714 2715 spa_config_exit(spa, SCL_VDEV, FTAG); 2716 2717 (void) rw_wrlock(&ztest_name_lock); 2718 error = spa_vdev_split_mirror(spa, "splitp", config, NULL, B_FALSE); 2719 (void) rw_unlock(&ztest_name_lock); 2720 2721 nvlist_free(config); 2722 2723 if (error == 0) { 2724 (void) printf("successful split - results:\n"); 2725 mutex_enter(&spa_namespace_lock); 2726 show_pool_stats(spa); 2727 show_pool_stats(spa_lookup("splitp")); 2728 mutex_exit(&spa_namespace_lock); 2729 ++zs->zs_splits; 2730 --zs->zs_mirrors; 2731 } 2732 VERIFY(mutex_unlock(&ztest_vdev_lock) == 0); 2733 2734 } 2735 2736 /* 2737 * Verify that we can attach and detach devices. 2738 */ 2739 /* ARGSUSED */ 2740 void 2741 ztest_vdev_attach_detach(ztest_ds_t *zd, uint64_t id) 2742 { 2743 ztest_shared_t *zs = ztest_shared; 2744 spa_t *spa = ztest_spa; 2745 spa_aux_vdev_t *sav = &spa->spa_spares; 2746 vdev_t *rvd = spa->spa_root_vdev; 2747 vdev_t *oldvd, *newvd, *pvd; 2748 nvlist_t *root; 2749 uint64_t leaves; 2750 uint64_t leaf, top; 2751 uint64_t ashift = ztest_get_ashift(); 2752 uint64_t oldguid, pguid; 2753 uint64_t oldsize, newsize; 2754 char oldpath[MAXPATHLEN], newpath[MAXPATHLEN]; 2755 int replacing; 2756 int oldvd_has_siblings = B_FALSE; 2757 int newvd_is_spare = B_FALSE; 2758 int oldvd_is_log; 2759 int error, expected_error; 2760 2761 VERIFY(mutex_lock(&ztest_vdev_lock) == 0); 2762 leaves = MAX(zs->zs_mirrors, 1) * ztest_opts.zo_raidz; 2763 2764 spa_config_enter(spa, SCL_VDEV, FTAG, RW_READER); 2765 2766 /* 2767 * Decide whether to do an attach or a replace. 2768 */ 2769 replacing = ztest_random(2); 2770 2771 /* 2772 * Pick a random top-level vdev. 2773 */ 2774 top = ztest_random_vdev_top(spa, B_TRUE); 2775 2776 /* 2777 * Pick a random leaf within it. 2778 */ 2779 leaf = ztest_random(leaves); 2780 2781 /* 2782 * Locate this vdev. 2783 */ 2784 oldvd = rvd->vdev_child[top]; 2785 if (zs->zs_mirrors >= 1) { 2786 ASSERT(oldvd->vdev_ops == &vdev_mirror_ops); 2787 ASSERT(oldvd->vdev_children >= zs->zs_mirrors); 2788 oldvd = oldvd->vdev_child[leaf / ztest_opts.zo_raidz]; 2789 } 2790 if (ztest_opts.zo_raidz > 1) { 2791 ASSERT(oldvd->vdev_ops == &vdev_raidz_ops); 2792 ASSERT(oldvd->vdev_children == ztest_opts.zo_raidz); 2793 oldvd = oldvd->vdev_child[leaf % ztest_opts.zo_raidz]; 2794 } 2795 2796 /* 2797 * If we're already doing an attach or replace, oldvd may be a 2798 * mirror vdev -- in which case, pick a random child. 2799 */ 2800 while (oldvd->vdev_children != 0) { 2801 oldvd_has_siblings = B_TRUE; 2802 ASSERT(oldvd->vdev_children >= 2); 2803 oldvd = oldvd->vdev_child[ztest_random(oldvd->vdev_children)]; 2804 } 2805 2806 oldguid = oldvd->vdev_guid; 2807 oldsize = vdev_get_min_asize(oldvd); 2808 oldvd_is_log = oldvd->vdev_top->vdev_islog; 2809 (void) strcpy(oldpath, oldvd->vdev_path); 2810 pvd = oldvd->vdev_parent; 2811 pguid = pvd->vdev_guid; 2812 2813 /* 2814 * If oldvd has siblings, then half of the time, detach it. 2815 */ 2816 if (oldvd_has_siblings && ztest_random(2) == 0) { 2817 spa_config_exit(spa, SCL_VDEV, FTAG); 2818 error = spa_vdev_detach(spa, oldguid, pguid, B_FALSE); 2819 if (error != 0 && error != ENODEV && error != EBUSY && 2820 error != ENOTSUP) 2821 fatal(0, "detach (%s) returned %d", oldpath, error); 2822 VERIFY(mutex_unlock(&ztest_vdev_lock) == 0); 2823 return; 2824 } 2825 2826 /* 2827 * For the new vdev, choose with equal probability between the two 2828 * standard paths (ending in either 'a' or 'b') or a random hot spare. 2829 */ 2830 if (sav->sav_count != 0 && ztest_random(3) == 0) { 2831 newvd = sav->sav_vdevs[ztest_random(sav->sav_count)]; 2832 newvd_is_spare = B_TRUE; 2833 (void) strcpy(newpath, newvd->vdev_path); 2834 } else { 2835 (void) snprintf(newpath, sizeof (newpath), ztest_dev_template, 2836 ztest_opts.zo_dir, ztest_opts.zo_pool, 2837 top * leaves + leaf); 2838 if (ztest_random(2) == 0) 2839 newpath[strlen(newpath) - 1] = 'b'; 2840 newvd = vdev_lookup_by_path(rvd, newpath); 2841 } 2842 2843 if (newvd) { 2844 newsize = vdev_get_min_asize(newvd); 2845 } else { 2846 /* 2847 * Make newsize a little bigger or smaller than oldsize. 2848 * If it's smaller, the attach should fail. 2849 * If it's larger, and we're doing a replace, 2850 * we should get dynamic LUN growth when we're done. 2851 */ 2852 newsize = 10 * oldsize / (9 + ztest_random(3)); 2853 } 2854 2855 /* 2856 * If pvd is not a mirror or root, the attach should fail with ENOTSUP, 2857 * unless it's a replace; in that case any non-replacing parent is OK. 2858 * 2859 * If newvd is already part of the pool, it should fail with EBUSY. 2860 * 2861 * If newvd is too small, it should fail with EOVERFLOW. 2862 */ 2863 if (pvd->vdev_ops != &vdev_mirror_ops && 2864 pvd->vdev_ops != &vdev_root_ops && (!replacing || 2865 pvd->vdev_ops == &vdev_replacing_ops || 2866 pvd->vdev_ops == &vdev_spare_ops)) 2867 expected_error = ENOTSUP; 2868 else if (newvd_is_spare && (!replacing || oldvd_is_log)) 2869 expected_error = ENOTSUP; 2870 else if (newvd == oldvd) 2871 expected_error = replacing ? 0 : EBUSY; 2872 else if (vdev_lookup_by_path(rvd, newpath) != NULL) 2873 expected_error = EBUSY; 2874 else if (newsize < oldsize) 2875 expected_error = EOVERFLOW; 2876 else if (ashift > oldvd->vdev_top->vdev_ashift) 2877 expected_error = EDOM; 2878 else 2879 expected_error = 0; 2880 2881 spa_config_exit(spa, SCL_VDEV, FTAG); 2882 2883 /* 2884 * Build the nvlist describing newpath. 2885 */ 2886 root = make_vdev_root(newpath, NULL, NULL, newvd == NULL ? newsize : 0, 2887 ashift, 0, 0, 0, 1); 2888 2889 error = spa_vdev_attach(spa, oldguid, root, replacing); 2890 2891 nvlist_free(root); 2892 2893 /* 2894 * If our parent was the replacing vdev, but the replace completed, 2895 * then instead of failing with ENOTSUP we may either succeed, 2896 * fail with ENODEV, or fail with EOVERFLOW. 2897 */ 2898 if (expected_error == ENOTSUP && 2899 (error == 0 || error == ENODEV || error == EOVERFLOW)) 2900 expected_error = error; 2901 2902 /* 2903 * If someone grew the LUN, the replacement may be too small. 2904 */ 2905 if (error == EOVERFLOW || error == EBUSY) 2906 expected_error = error; 2907 2908 /* XXX workaround 6690467 */ 2909 if (error != expected_error && expected_error != EBUSY) { 2910 fatal(0, "attach (%s %llu, %s %llu, %d) " 2911 "returned %d, expected %d", 2912 oldpath, oldsize, newpath, 2913 newsize, replacing, error, expected_error); 2914 } 2915 2916 VERIFY(mutex_unlock(&ztest_vdev_lock) == 0); 2917 } 2918 2919 /* 2920 * Callback function which expands the physical size of the vdev. 2921 */ 2922 vdev_t * 2923 grow_vdev(vdev_t *vd, void *arg) 2924 { 2925 spa_t *spa = vd->vdev_spa; 2926 size_t *newsize = arg; 2927 size_t fsize; 2928 int fd; 2929 2930 ASSERT(spa_config_held(spa, SCL_STATE, RW_READER) == SCL_STATE); 2931 ASSERT(vd->vdev_ops->vdev_op_leaf); 2932 2933 if ((fd = open(vd->vdev_path, O_RDWR)) == -1) 2934 return (vd); 2935 2936 fsize = lseek(fd, 0, SEEK_END); 2937 (void) ftruncate(fd, *newsize); 2938 2939 if (ztest_opts.zo_verbose >= 6) { 2940 (void) printf("%s grew from %lu to %lu bytes\n", 2941 vd->vdev_path, (ulong_t)fsize, (ulong_t)*newsize); 2942 } 2943 (void) close(fd); 2944 return (NULL); 2945 } 2946 2947 /* 2948 * Callback function which expands a given vdev by calling vdev_online(). 2949 */ 2950 /* ARGSUSED */ 2951 vdev_t * 2952 online_vdev(vdev_t *vd, void *arg) 2953 { 2954 spa_t *spa = vd->vdev_spa; 2955 vdev_t *tvd = vd->vdev_top; 2956 uint64_t guid = vd->vdev_guid; 2957 uint64_t generation = spa->spa_config_generation + 1; 2958 vdev_state_t newstate = VDEV_STATE_UNKNOWN; 2959 int error; 2960 2961 ASSERT(spa_config_held(spa, SCL_STATE, RW_READER) == SCL_STATE); 2962 ASSERT(vd->vdev_ops->vdev_op_leaf); 2963 2964 /* Calling vdev_online will initialize the new metaslabs */ 2965 spa_config_exit(spa, SCL_STATE, spa); 2966 error = vdev_online(spa, guid, ZFS_ONLINE_EXPAND, &newstate); 2967 spa_config_enter(spa, SCL_STATE, spa, RW_READER); 2968 2969 /* 2970 * If vdev_online returned an error or the underlying vdev_open 2971 * failed then we abort the expand. The only way to know that 2972 * vdev_open fails is by checking the returned newstate. 2973 */ 2974 if (error || newstate != VDEV_STATE_HEALTHY) { 2975 if (ztest_opts.zo_verbose >= 5) { 2976 (void) printf("Unable to expand vdev, state %llu, " 2977 "error %d\n", (u_longlong_t)newstate, error); 2978 } 2979 return (vd); 2980 } 2981 ASSERT3U(newstate, ==, VDEV_STATE_HEALTHY); 2982 2983 /* 2984 * Since we dropped the lock we need to ensure that we're 2985 * still talking to the original vdev. It's possible this 2986 * vdev may have been detached/replaced while we were 2987 * trying to online it. 2988 */ 2989 if (generation != spa->spa_config_generation) { 2990 if (ztest_opts.zo_verbose >= 5) { 2991 (void) printf("vdev configuration has changed, " 2992 "guid %llu, state %llu, expected gen %llu, " 2993 "got gen %llu\n", 2994 (u_longlong_t)guid, 2995 (u_longlong_t)tvd->vdev_state, 2996 (u_longlong_t)generation, 2997 (u_longlong_t)spa->spa_config_generation); 2998 } 2999 return (vd); 3000 } 3001 return (NULL); 3002 } 3003 3004 /* 3005 * Traverse the vdev tree calling the supplied function. 3006 * We continue to walk the tree until we either have walked all 3007 * children or we receive a non-NULL return from the callback. 3008 * If a NULL callback is passed, then we just return back the first 3009 * leaf vdev we encounter. 3010 */ 3011 vdev_t * 3012 vdev_walk_tree(vdev_t *vd, vdev_t *(*func)(vdev_t *, void *), void *arg) 3013 { 3014 if (vd->vdev_ops->vdev_op_leaf) { 3015 if (func == NULL) 3016 return (vd); 3017 else 3018 return (func(vd, arg)); 3019 } 3020 3021 for (uint_t c = 0; c < vd->vdev_children; c++) { 3022 vdev_t *cvd = vd->vdev_child[c]; 3023 if ((cvd = vdev_walk_tree(cvd, func, arg)) != NULL) 3024 return (cvd); 3025 } 3026 return (NULL); 3027 } 3028 3029 /* 3030 * Verify that dynamic LUN growth works as expected. 3031 */ 3032 /* ARGSUSED */ 3033 void 3034 ztest_vdev_LUN_growth(ztest_ds_t *zd, uint64_t id) 3035 { 3036 spa_t *spa = ztest_spa; 3037 vdev_t *vd, *tvd; 3038 metaslab_class_t *mc; 3039 metaslab_group_t *mg; 3040 size_t psize, newsize; 3041 uint64_t top; 3042 uint64_t old_class_space, new_class_space, old_ms_count, new_ms_count; 3043 3044 VERIFY(mutex_lock(&ztest_vdev_lock) == 0); 3045 spa_config_enter(spa, SCL_STATE, spa, RW_READER); 3046 3047 top = ztest_random_vdev_top(spa, B_TRUE); 3048 3049 tvd = spa->spa_root_vdev->vdev_child[top]; 3050 mg = tvd->vdev_mg; 3051 mc = mg->mg_class; 3052 old_ms_count = tvd->vdev_ms_count; 3053 old_class_space = metaslab_class_get_space(mc); 3054 3055 /* 3056 * Determine the size of the first leaf vdev associated with 3057 * our top-level device. 3058 */ 3059 vd = vdev_walk_tree(tvd, NULL, NULL); 3060 ASSERT3P(vd, !=, NULL); 3061 ASSERT(vd->vdev_ops->vdev_op_leaf); 3062 3063 psize = vd->vdev_psize; 3064 3065 /* 3066 * We only try to expand the vdev if it's healthy, less than 4x its 3067 * original size, and it has a valid psize. 3068 */ 3069 if (tvd->vdev_state != VDEV_STATE_HEALTHY || 3070 psize == 0 || psize >= 4 * ztest_opts.zo_vdev_size) { 3071 spa_config_exit(spa, SCL_STATE, spa); 3072 VERIFY(mutex_unlock(&ztest_vdev_lock) == 0); 3073 return; 3074 } 3075 ASSERT(psize > 0); 3076 newsize = psize + psize / 8; 3077 ASSERT3U(newsize, >, psize); 3078 3079 if (ztest_opts.zo_verbose >= 6) { 3080 (void) printf("Expanding LUN %s from %lu to %lu\n", 3081 vd->vdev_path, (ulong_t)psize, (ulong_t)newsize); 3082 } 3083 3084 /* 3085 * Growing the vdev is a two step process: 3086 * 1). expand the physical size (i.e. relabel) 3087 * 2). online the vdev to create the new metaslabs 3088 */ 3089 if (vdev_walk_tree(tvd, grow_vdev, &newsize) != NULL || 3090 vdev_walk_tree(tvd, online_vdev, NULL) != NULL || 3091 tvd->vdev_state != VDEV_STATE_HEALTHY) { 3092 if (ztest_opts.zo_verbose >= 5) { 3093 (void) printf("Could not expand LUN because " 3094 "the vdev configuration changed.\n"); 3095 } 3096 spa_config_exit(spa, SCL_STATE, spa); 3097 VERIFY(mutex_unlock(&ztest_vdev_lock) == 0); 3098 return; 3099 } 3100 3101 spa_config_exit(spa, SCL_STATE, spa); 3102 3103 /* 3104 * Expanding the LUN will update the config asynchronously, 3105 * thus we must wait for the async thread to complete any 3106 * pending tasks before proceeding. 3107 */ 3108 for (;;) { 3109 boolean_t done; 3110 mutex_enter(&spa->spa_async_lock); 3111 done = (spa->spa_async_thread == NULL && !spa->spa_async_tasks); 3112 mutex_exit(&spa->spa_async_lock); 3113 if (done) 3114 break; 3115 txg_wait_synced(spa_get_dsl(spa), 0); 3116 (void) poll(NULL, 0, 100); 3117 } 3118 3119 spa_config_enter(spa, SCL_STATE, spa, RW_READER); 3120 3121 tvd = spa->spa_root_vdev->vdev_child[top]; 3122 new_ms_count = tvd->vdev_ms_count; 3123 new_class_space = metaslab_class_get_space(mc); 3124 3125 if (tvd->vdev_mg != mg || mg->mg_class != mc) { 3126 if (ztest_opts.zo_verbose >= 5) { 3127 (void) printf("Could not verify LUN expansion due to " 3128 "intervening vdev offline or remove.\n"); 3129 } 3130 spa_config_exit(spa, SCL_STATE, spa); 3131 VERIFY(mutex_unlock(&ztest_vdev_lock) == 0); 3132 return; 3133 } 3134 3135 /* 3136 * Make sure we were able to grow the vdev. 3137 */ 3138 if (new_ms_count <= old_ms_count) 3139 fatal(0, "LUN expansion failed: ms_count %llu <= %llu\n", 3140 old_ms_count, new_ms_count); 3141 3142 /* 3143 * Make sure we were able to grow the pool. 3144 */ 3145 if (new_class_space <= old_class_space) 3146 fatal(0, "LUN expansion failed: class_space %llu <= %llu\n", 3147 old_class_space, new_class_space); 3148 3149 if (ztest_opts.zo_verbose >= 5) { 3150 char oldnumbuf[6], newnumbuf[6]; 3151 3152 nicenum(old_class_space, oldnumbuf); 3153 nicenum(new_class_space, newnumbuf); 3154 (void) printf("%s grew from %s to %s\n", 3155 spa->spa_name, oldnumbuf, newnumbuf); 3156 } 3157 3158 spa_config_exit(spa, SCL_STATE, spa); 3159 VERIFY(mutex_unlock(&ztest_vdev_lock) == 0); 3160 } 3161 3162 /* 3163 * Verify that dmu_objset_{create,destroy,open,close} work as expected. 3164 */ 3165 /* ARGSUSED */ 3166 static void 3167 ztest_objset_create_cb(objset_t *os, void *arg, cred_t *cr, dmu_tx_t *tx) 3168 { 3169 /* 3170 * Create the objects common to all ztest datasets. 3171 */ 3172 VERIFY(zap_create_claim(os, ZTEST_DIROBJ, 3173 DMU_OT_ZAP_OTHER, DMU_OT_NONE, 0, tx) == 0); 3174 } 3175 3176 static int 3177 ztest_dataset_create(char *dsname) 3178 { 3179 uint64_t zilset = ztest_random(100); 3180 int err = dmu_objset_create(dsname, DMU_OST_OTHER, 0, 3181 ztest_objset_create_cb, NULL); 3182 3183 if (err || zilset < 80) 3184 return (err); 3185 3186 if (ztest_opts.zo_verbose >= 6) 3187 (void) printf("Setting dataset %s to sync always\n", dsname); 3188 return (ztest_dsl_prop_set_uint64(dsname, ZFS_PROP_SYNC, 3189 ZFS_SYNC_ALWAYS, B_FALSE)); 3190 } 3191 3192 /* ARGSUSED */ 3193 static int 3194 ztest_objset_destroy_cb(const char *name, void *arg) 3195 { 3196 objset_t *os; 3197 dmu_object_info_t doi; 3198 int error; 3199 3200 /* 3201 * Verify that the dataset contains a directory object. 3202 */ 3203 VERIFY0(dmu_objset_own(name, DMU_OST_OTHER, B_TRUE, FTAG, &os)); 3204 error = dmu_object_info(os, ZTEST_DIROBJ, &doi); 3205 if (error != ENOENT) { 3206 /* We could have crashed in the middle of destroying it */ 3207 ASSERT0(error); 3208 ASSERT3U(doi.doi_type, ==, DMU_OT_ZAP_OTHER); 3209 ASSERT3S(doi.doi_physical_blocks_512, >=, 0); 3210 } 3211 dmu_objset_disown(os, FTAG); 3212 3213 /* 3214 * Destroy the dataset. 3215 */ 3216 if (strchr(name, '@') != NULL) { 3217 VERIFY0(dsl_destroy_snapshot(name, B_FALSE)); 3218 } else { 3219 VERIFY0(dsl_destroy_head(name)); 3220 } 3221 return (0); 3222 } 3223 3224 static boolean_t 3225 ztest_snapshot_create(char *osname, uint64_t id) 3226 { 3227 char snapname[ZFS_MAX_DATASET_NAME_LEN]; 3228 int error; 3229 3230 (void) snprintf(snapname, sizeof (snapname), "%llu", (u_longlong_t)id); 3231 3232 error = dmu_objset_snapshot_one(osname, snapname); 3233 if (error == ENOSPC) { 3234 ztest_record_enospc(FTAG); 3235 return (B_FALSE); 3236 } 3237 if (error != 0 && error != EEXIST) { 3238 fatal(0, "ztest_snapshot_create(%s@%s) = %d", osname, 3239 snapname, error); 3240 } 3241 return (B_TRUE); 3242 } 3243 3244 static boolean_t 3245 ztest_snapshot_destroy(char *osname, uint64_t id) 3246 { 3247 char snapname[ZFS_MAX_DATASET_NAME_LEN]; 3248 int error; 3249 3250 (void) snprintf(snapname, sizeof (snapname), "%s@%llu", osname, 3251 (u_longlong_t)id); 3252 3253 error = dsl_destroy_snapshot(snapname, B_FALSE); 3254 if (error != 0 && error != ENOENT) 3255 fatal(0, "ztest_snapshot_destroy(%s) = %d", snapname, error); 3256 return (B_TRUE); 3257 } 3258 3259 /* ARGSUSED */ 3260 void 3261 ztest_dmu_objset_create_destroy(ztest_ds_t *zd, uint64_t id) 3262 { 3263 ztest_ds_t zdtmp; 3264 int iters; 3265 int error; 3266 objset_t *os, *os2; 3267 char name[ZFS_MAX_DATASET_NAME_LEN]; 3268 zilog_t *zilog; 3269 3270 (void) rw_rdlock(&ztest_name_lock); 3271 3272 (void) snprintf(name, sizeof (name), "%s/temp_%llu", 3273 ztest_opts.zo_pool, (u_longlong_t)id); 3274 3275 /* 3276 * If this dataset exists from a previous run, process its replay log 3277 * half of the time. If we don't replay it, then dmu_objset_destroy() 3278 * (invoked from ztest_objset_destroy_cb()) should just throw it away. 3279 */ 3280 if (ztest_random(2) == 0 && 3281 dmu_objset_own(name, DMU_OST_OTHER, B_FALSE, FTAG, &os) == 0) { 3282 ztest_zd_init(&zdtmp, NULL, os); 3283 zil_replay(os, &zdtmp, ztest_replay_vector); 3284 ztest_zd_fini(&zdtmp); 3285 dmu_objset_disown(os, FTAG); 3286 } 3287 3288 /* 3289 * There may be an old instance of the dataset we're about to 3290 * create lying around from a previous run. If so, destroy it 3291 * and all of its snapshots. 3292 */ 3293 (void) dmu_objset_find(name, ztest_objset_destroy_cb, NULL, 3294 DS_FIND_CHILDREN | DS_FIND_SNAPSHOTS); 3295 3296 /* 3297 * Verify that the destroyed dataset is no longer in the namespace. 3298 */ 3299 VERIFY3U(ENOENT, ==, dmu_objset_own(name, DMU_OST_OTHER, B_TRUE, 3300 FTAG, &os)); 3301 3302 /* 3303 * Verify that we can create a new dataset. 3304 */ 3305 error = ztest_dataset_create(name); 3306 if (error) { 3307 if (error == ENOSPC) { 3308 ztest_record_enospc(FTAG); 3309 (void) rw_unlock(&ztest_name_lock); 3310 return; 3311 } 3312 fatal(0, "dmu_objset_create(%s) = %d", name, error); 3313 } 3314 3315 VERIFY0(dmu_objset_own(name, DMU_OST_OTHER, B_FALSE, FTAG, &os)); 3316 3317 ztest_zd_init(&zdtmp, NULL, os); 3318 3319 /* 3320 * Open the intent log for it. 3321 */ 3322 zilog = zil_open(os, ztest_get_data); 3323 3324 /* 3325 * Put some objects in there, do a little I/O to them, 3326 * and randomly take a couple of snapshots along the way. 3327 */ 3328 iters = ztest_random(5); 3329 for (int i = 0; i < iters; i++) { 3330 ztest_dmu_object_alloc_free(&zdtmp, id); 3331 if (ztest_random(iters) == 0) 3332 (void) ztest_snapshot_create(name, i); 3333 } 3334 3335 /* 3336 * Verify that we cannot create an existing dataset. 3337 */ 3338 VERIFY3U(EEXIST, ==, 3339 dmu_objset_create(name, DMU_OST_OTHER, 0, NULL, NULL)); 3340 3341 /* 3342 * Verify that we can hold an objset that is also owned. 3343 */ 3344 VERIFY3U(0, ==, dmu_objset_hold(name, FTAG, &os2)); 3345 dmu_objset_rele(os2, FTAG); 3346 3347 /* 3348 * Verify that we cannot own an objset that is already owned. 3349 */ 3350 VERIFY3U(EBUSY, ==, 3351 dmu_objset_own(name, DMU_OST_OTHER, B_FALSE, FTAG, &os2)); 3352 3353 zil_close(zilog); 3354 dmu_objset_disown(os, FTAG); 3355 ztest_zd_fini(&zdtmp); 3356 3357 (void) rw_unlock(&ztest_name_lock); 3358 } 3359 3360 /* 3361 * Verify that dmu_snapshot_{create,destroy,open,close} work as expected. 3362 */ 3363 void 3364 ztest_dmu_snapshot_create_destroy(ztest_ds_t *zd, uint64_t id) 3365 { 3366 (void) rw_rdlock(&ztest_name_lock); 3367 (void) ztest_snapshot_destroy(zd->zd_name, id); 3368 (void) ztest_snapshot_create(zd->zd_name, id); 3369 (void) rw_unlock(&ztest_name_lock); 3370 } 3371 3372 /* 3373 * Cleanup non-standard snapshots and clones. 3374 */ 3375 void 3376 ztest_dsl_dataset_cleanup(char *osname, uint64_t id) 3377 { 3378 char snap1name[ZFS_MAX_DATASET_NAME_LEN]; 3379 char clone1name[ZFS_MAX_DATASET_NAME_LEN]; 3380 char snap2name[ZFS_MAX_DATASET_NAME_LEN]; 3381 char clone2name[ZFS_MAX_DATASET_NAME_LEN]; 3382 char snap3name[ZFS_MAX_DATASET_NAME_LEN]; 3383 int error; 3384 3385 (void) snprintf(snap1name, sizeof (snap1name), 3386 "%s@s1_%llu", osname, id); 3387 (void) snprintf(clone1name, sizeof (clone1name), 3388 "%s/c1_%llu", osname, id); 3389 (void) snprintf(snap2name, sizeof (snap2name), 3390 "%s@s2_%llu", clone1name, id); 3391 (void) snprintf(clone2name, sizeof (clone2name), 3392 "%s/c2_%llu", osname, id); 3393 (void) snprintf(snap3name, sizeof (snap3name), 3394 "%s@s3_%llu", clone1name, id); 3395 3396 error = dsl_destroy_head(clone2name); 3397 if (error && error != ENOENT) 3398 fatal(0, "dsl_destroy_head(%s) = %d", clone2name, error); 3399 error = dsl_destroy_snapshot(snap3name, B_FALSE); 3400 if (error && error != ENOENT) 3401 fatal(0, "dsl_destroy_snapshot(%s) = %d", snap3name, error); 3402 error = dsl_destroy_snapshot(snap2name, B_FALSE); 3403 if (error && error != ENOENT) 3404 fatal(0, "dsl_destroy_snapshot(%s) = %d", snap2name, error); 3405 error = dsl_destroy_head(clone1name); 3406 if (error && error != ENOENT) 3407 fatal(0, "dsl_destroy_head(%s) = %d", clone1name, error); 3408 error = dsl_destroy_snapshot(snap1name, B_FALSE); 3409 if (error && error != ENOENT) 3410 fatal(0, "dsl_destroy_snapshot(%s) = %d", snap1name, error); 3411 } 3412 3413 /* 3414 * Verify dsl_dataset_promote handles EBUSY 3415 */ 3416 void 3417 ztest_dsl_dataset_promote_busy(ztest_ds_t *zd, uint64_t id) 3418 { 3419 objset_t *os; 3420 char snap1name[ZFS_MAX_DATASET_NAME_LEN]; 3421 char clone1name[ZFS_MAX_DATASET_NAME_LEN]; 3422 char snap2name[ZFS_MAX_DATASET_NAME_LEN]; 3423 char clone2name[ZFS_MAX_DATASET_NAME_LEN]; 3424 char snap3name[ZFS_MAX_DATASET_NAME_LEN]; 3425 char *osname = zd->zd_name; 3426 int error; 3427 3428 (void) rw_rdlock(&ztest_name_lock); 3429 3430 ztest_dsl_dataset_cleanup(osname, id); 3431 3432 (void) snprintf(snap1name, sizeof (snap1name), 3433 "%s@s1_%llu", osname, id); 3434 (void) snprintf(clone1name, sizeof (clone1name), 3435 "%s/c1_%llu", osname, id); 3436 (void) snprintf(snap2name, sizeof (snap2name), 3437 "%s@s2_%llu", clone1name, id); 3438 (void) snprintf(clone2name, sizeof (clone2name), 3439 "%s/c2_%llu", osname, id); 3440 (void) snprintf(snap3name, sizeof (snap3name), 3441 "%s@s3_%llu", clone1name, id); 3442 3443 error = dmu_objset_snapshot_one(osname, strchr(snap1name, '@') + 1); 3444 if (error && error != EEXIST) { 3445 if (error == ENOSPC) { 3446 ztest_record_enospc(FTAG); 3447 goto out; 3448 } 3449 fatal(0, "dmu_take_snapshot(%s) = %d", snap1name, error); 3450 } 3451 3452 error = dmu_objset_clone(clone1name, snap1name); 3453 if (error) { 3454 if (error == ENOSPC) { 3455 ztest_record_enospc(FTAG); 3456 goto out; 3457 } 3458 fatal(0, "dmu_objset_create(%s) = %d", clone1name, error); 3459 } 3460 3461 error = dmu_objset_snapshot_one(clone1name, strchr(snap2name, '@') + 1); 3462 if (error && error != EEXIST) { 3463 if (error == ENOSPC) { 3464 ztest_record_enospc(FTAG); 3465 goto out; 3466 } 3467 fatal(0, "dmu_open_snapshot(%s) = %d", snap2name, error); 3468 } 3469 3470 error = dmu_objset_snapshot_one(clone1name, strchr(snap3name, '@') + 1); 3471 if (error && error != EEXIST) { 3472 if (error == ENOSPC) { 3473 ztest_record_enospc(FTAG); 3474 goto out; 3475 } 3476 fatal(0, "dmu_open_snapshot(%s) = %d", snap3name, error); 3477 } 3478 3479 error = dmu_objset_clone(clone2name, snap3name); 3480 if (error) { 3481 if (error == ENOSPC) { 3482 ztest_record_enospc(FTAG); 3483 goto out; 3484 } 3485 fatal(0, "dmu_objset_create(%s) = %d", clone2name, error); 3486 } 3487 3488 error = dmu_objset_own(snap2name, DMU_OST_ANY, B_TRUE, FTAG, &os); 3489 if (error) 3490 fatal(0, "dmu_objset_own(%s) = %d", snap2name, error); 3491 error = dsl_dataset_promote(clone2name, NULL); 3492 if (error == ENOSPC) { 3493 dmu_objset_disown(os, FTAG); 3494 ztest_record_enospc(FTAG); 3495 goto out; 3496 } 3497 if (error != EBUSY) 3498 fatal(0, "dsl_dataset_promote(%s), %d, not EBUSY", clone2name, 3499 error); 3500 dmu_objset_disown(os, FTAG); 3501 3502 out: 3503 ztest_dsl_dataset_cleanup(osname, id); 3504 3505 (void) rw_unlock(&ztest_name_lock); 3506 } 3507 3508 /* 3509 * Verify that dmu_object_{alloc,free} work as expected. 3510 */ 3511 void 3512 ztest_dmu_object_alloc_free(ztest_ds_t *zd, uint64_t id) 3513 { 3514 ztest_od_t od[4]; 3515 int batchsize = sizeof (od) / sizeof (od[0]); 3516 3517 for (int b = 0; b < batchsize; b++) 3518 ztest_od_init(&od[b], id, FTAG, b, DMU_OT_UINT64_OTHER, 0, 0); 3519 3520 /* 3521 * Destroy the previous batch of objects, create a new batch, 3522 * and do some I/O on the new objects. 3523 */ 3524 if (ztest_object_init(zd, od, sizeof (od), B_TRUE) != 0) 3525 return; 3526 3527 while (ztest_random(4 * batchsize) != 0) 3528 ztest_io(zd, od[ztest_random(batchsize)].od_object, 3529 ztest_random(ZTEST_RANGE_LOCKS) << SPA_MAXBLOCKSHIFT); 3530 } 3531 3532 /* 3533 * Verify that dmu_{read,write} work as expected. 3534 */ 3535 void 3536 ztest_dmu_read_write(ztest_ds_t *zd, uint64_t id) 3537 { 3538 objset_t *os = zd->zd_os; 3539 ztest_od_t od[2]; 3540 dmu_tx_t *tx; 3541 int i, freeit, error; 3542 uint64_t n, s, txg; 3543 bufwad_t *packbuf, *bigbuf, *pack, *bigH, *bigT; 3544 uint64_t packobj, packoff, packsize, bigobj, bigoff, bigsize; 3545 uint64_t chunksize = (1000 + ztest_random(1000)) * sizeof (uint64_t); 3546 uint64_t regions = 997; 3547 uint64_t stride = 123456789ULL; 3548 uint64_t width = 40; 3549 int free_percent = 5; 3550 3551 /* 3552 * This test uses two objects, packobj and bigobj, that are always 3553 * updated together (i.e. in the same tx) so that their contents are 3554 * in sync and can be compared. Their contents relate to each other 3555 * in a simple way: packobj is a dense array of 'bufwad' structures, 3556 * while bigobj is a sparse array of the same bufwads. Specifically, 3557 * for any index n, there are three bufwads that should be identical: 3558 * 3559 * packobj, at offset n * sizeof (bufwad_t) 3560 * bigobj, at the head of the nth chunk 3561 * bigobj, at the tail of the nth chunk 3562 * 3563 * The chunk size is arbitrary. It doesn't have to be a power of two, 3564 * and it doesn't have any relation to the object blocksize. 3565 * The only requirement is that it can hold at least two bufwads. 3566 * 3567 * Normally, we write the bufwad to each of these locations. 3568 * However, free_percent of the time we instead write zeroes to 3569 * packobj and perform a dmu_free_range() on bigobj. By comparing 3570 * bigobj to packobj, we can verify that the DMU is correctly 3571 * tracking which parts of an object are allocated and free, 3572 * and that the contents of the allocated blocks are correct. 3573 */ 3574 3575 /* 3576 * Read the directory info. If it's the first time, set things up. 3577 */ 3578 ztest_od_init(&od[0], id, FTAG, 0, DMU_OT_UINT64_OTHER, 0, chunksize); 3579 ztest_od_init(&od[1], id, FTAG, 1, DMU_OT_UINT64_OTHER, 0, chunksize); 3580 3581 if (ztest_object_init(zd, od, sizeof (od), B_FALSE) != 0) 3582 return; 3583 3584 bigobj = od[0].od_object; 3585 packobj = od[1].od_object; 3586 chunksize = od[0].od_gen; 3587 ASSERT(chunksize == od[1].od_gen); 3588 3589 /* 3590 * Prefetch a random chunk of the big object. 3591 * Our aim here is to get some async reads in flight 3592 * for blocks that we may free below; the DMU should 3593 * handle this race correctly. 3594 */ 3595 n = ztest_random(regions) * stride + ztest_random(width); 3596 s = 1 + ztest_random(2 * width - 1); 3597 dmu_prefetch(os, bigobj, 0, n * chunksize, s * chunksize, 3598 ZIO_PRIORITY_SYNC_READ); 3599 3600 /* 3601 * Pick a random index and compute the offsets into packobj and bigobj. 3602 */ 3603 n = ztest_random(regions) * stride + ztest_random(width); 3604 s = 1 + ztest_random(width - 1); 3605 3606 packoff = n * sizeof (bufwad_t); 3607 packsize = s * sizeof (bufwad_t); 3608 3609 bigoff = n * chunksize; 3610 bigsize = s * chunksize; 3611 3612 packbuf = umem_alloc(packsize, UMEM_NOFAIL); 3613 bigbuf = umem_alloc(bigsize, UMEM_NOFAIL); 3614 3615 /* 3616 * free_percent of the time, free a range of bigobj rather than 3617 * overwriting it. 3618 */ 3619 freeit = (ztest_random(100) < free_percent); 3620 3621 /* 3622 * Read the current contents of our objects. 3623 */ 3624 error = dmu_read(os, packobj, packoff, packsize, packbuf, 3625 DMU_READ_PREFETCH); 3626 ASSERT0(error); 3627 error = dmu_read(os, bigobj, bigoff, bigsize, bigbuf, 3628 DMU_READ_PREFETCH); 3629 ASSERT0(error); 3630 3631 /* 3632 * Get a tx for the mods to both packobj and bigobj. 3633 */ 3634 tx = dmu_tx_create(os); 3635 3636 dmu_tx_hold_write(tx, packobj, packoff, packsize); 3637 3638 if (freeit) 3639 dmu_tx_hold_free(tx, bigobj, bigoff, bigsize); 3640 else 3641 dmu_tx_hold_write(tx, bigobj, bigoff, bigsize); 3642 3643 /* This accounts for setting the checksum/compression. */ 3644 dmu_tx_hold_bonus(tx, bigobj); 3645 3646 txg = ztest_tx_assign(tx, TXG_MIGHTWAIT, FTAG); 3647 if (txg == 0) { 3648 umem_free(packbuf, packsize); 3649 umem_free(bigbuf, bigsize); 3650 return; 3651 } 3652 3653 enum zio_checksum cksum; 3654 do { 3655 cksum = (enum zio_checksum) 3656 ztest_random_dsl_prop(ZFS_PROP_CHECKSUM); 3657 } while (cksum >= ZIO_CHECKSUM_LEGACY_FUNCTIONS); 3658 dmu_object_set_checksum(os, bigobj, cksum, tx); 3659 3660 enum zio_compress comp; 3661 do { 3662 comp = (enum zio_compress) 3663 ztest_random_dsl_prop(ZFS_PROP_COMPRESSION); 3664 } while (comp >= ZIO_COMPRESS_LEGACY_FUNCTIONS); 3665 dmu_object_set_compress(os, bigobj, comp, tx); 3666 3667 /* 3668 * For each index from n to n + s, verify that the existing bufwad 3669 * in packobj matches the bufwads at the head and tail of the 3670 * corresponding chunk in bigobj. Then update all three bufwads 3671 * with the new values we want to write out. 3672 */ 3673 for (i = 0; i < s; i++) { 3674 /* LINTED */ 3675 pack = (bufwad_t *)((char *)packbuf + i * sizeof (bufwad_t)); 3676 /* LINTED */ 3677 bigH = (bufwad_t *)((char *)bigbuf + i * chunksize); 3678 /* LINTED */ 3679 bigT = (bufwad_t *)((char *)bigH + chunksize) - 1; 3680 3681 ASSERT((uintptr_t)bigH - (uintptr_t)bigbuf < bigsize); 3682 ASSERT((uintptr_t)bigT - (uintptr_t)bigbuf < bigsize); 3683 3684 if (pack->bw_txg > txg) 3685 fatal(0, "future leak: got %llx, open txg is %llx", 3686 pack->bw_txg, txg); 3687 3688 if (pack->bw_data != 0 && pack->bw_index != n + i) 3689 fatal(0, "wrong index: got %llx, wanted %llx+%llx", 3690 pack->bw_index, n, i); 3691 3692 if (bcmp(pack, bigH, sizeof (bufwad_t)) != 0) 3693 fatal(0, "pack/bigH mismatch in %p/%p", pack, bigH); 3694 3695 if (bcmp(pack, bigT, sizeof (bufwad_t)) != 0) 3696 fatal(0, "pack/bigT mismatch in %p/%p", pack, bigT); 3697 3698 if (freeit) { 3699 bzero(pack, sizeof (bufwad_t)); 3700 } else { 3701 pack->bw_index = n + i; 3702 pack->bw_txg = txg; 3703 pack->bw_data = 1 + ztest_random(-2ULL); 3704 } 3705 *bigH = *pack; 3706 *bigT = *pack; 3707 } 3708 3709 /* 3710 * We've verified all the old bufwads, and made new ones. 3711 * Now write them out. 3712 */ 3713 dmu_write(os, packobj, packoff, packsize, packbuf, tx); 3714 3715 if (freeit) { 3716 if (ztest_opts.zo_verbose >= 7) { 3717 (void) printf("freeing offset %llx size %llx" 3718 " txg %llx\n", 3719 (u_longlong_t)bigoff, 3720 (u_longlong_t)bigsize, 3721 (u_longlong_t)txg); 3722 } 3723 VERIFY(0 == dmu_free_range(os, bigobj, bigoff, bigsize, tx)); 3724 } else { 3725 if (ztest_opts.zo_verbose >= 7) { 3726 (void) printf("writing offset %llx size %llx" 3727 " txg %llx\n", 3728 (u_longlong_t)bigoff, 3729 (u_longlong_t)bigsize, 3730 (u_longlong_t)txg); 3731 } 3732 dmu_write(os, bigobj, bigoff, bigsize, bigbuf, tx); 3733 } 3734 3735 dmu_tx_commit(tx); 3736 3737 /* 3738 * Sanity check the stuff we just wrote. 3739 */ 3740 { 3741 void *packcheck = umem_alloc(packsize, UMEM_NOFAIL); 3742 void *bigcheck = umem_alloc(bigsize, UMEM_NOFAIL); 3743 3744 VERIFY(0 == dmu_read(os, packobj, packoff, 3745 packsize, packcheck, DMU_READ_PREFETCH)); 3746 VERIFY(0 == dmu_read(os, bigobj, bigoff, 3747 bigsize, bigcheck, DMU_READ_PREFETCH)); 3748 3749 ASSERT(bcmp(packbuf, packcheck, packsize) == 0); 3750 ASSERT(bcmp(bigbuf, bigcheck, bigsize) == 0); 3751 3752 umem_free(packcheck, packsize); 3753 umem_free(bigcheck, bigsize); 3754 } 3755 3756 umem_free(packbuf, packsize); 3757 umem_free(bigbuf, bigsize); 3758 } 3759 3760 void 3761 compare_and_update_pbbufs(uint64_t s, bufwad_t *packbuf, bufwad_t *bigbuf, 3762 uint64_t bigsize, uint64_t n, uint64_t chunksize, uint64_t txg) 3763 { 3764 uint64_t i; 3765 bufwad_t *pack; 3766 bufwad_t *bigH; 3767 bufwad_t *bigT; 3768 3769 /* 3770 * For each index from n to n + s, verify that the existing bufwad 3771 * in packobj matches the bufwads at the head and tail of the 3772 * corresponding chunk in bigobj. Then update all three bufwads 3773 * with the new values we want to write out. 3774 */ 3775 for (i = 0; i < s; i++) { 3776 /* LINTED */ 3777 pack = (bufwad_t *)((char *)packbuf + i * sizeof (bufwad_t)); 3778 /* LINTED */ 3779 bigH = (bufwad_t *)((char *)bigbuf + i * chunksize); 3780 /* LINTED */ 3781 bigT = (bufwad_t *)((char *)bigH + chunksize) - 1; 3782 3783 ASSERT((uintptr_t)bigH - (uintptr_t)bigbuf < bigsize); 3784 ASSERT((uintptr_t)bigT - (uintptr_t)bigbuf < bigsize); 3785 3786 if (pack->bw_txg > txg) 3787 fatal(0, "future leak: got %llx, open txg is %llx", 3788 pack->bw_txg, txg); 3789 3790 if (pack->bw_data != 0 && pack->bw_index != n + i) 3791 fatal(0, "wrong index: got %llx, wanted %llx+%llx", 3792 pack->bw_index, n, i); 3793 3794 if (bcmp(pack, bigH, sizeof (bufwad_t)) != 0) 3795 fatal(0, "pack/bigH mismatch in %p/%p", pack, bigH); 3796 3797 if (bcmp(pack, bigT, sizeof (bufwad_t)) != 0) 3798 fatal(0, "pack/bigT mismatch in %p/%p", pack, bigT); 3799 3800 pack->bw_index = n + i; 3801 pack->bw_txg = txg; 3802 pack->bw_data = 1 + ztest_random(-2ULL); 3803 3804 *bigH = *pack; 3805 *bigT = *pack; 3806 } 3807 } 3808 3809 void 3810 ztest_dmu_read_write_zcopy(ztest_ds_t *zd, uint64_t id) 3811 { 3812 objset_t *os = zd->zd_os; 3813 ztest_od_t od[2]; 3814 dmu_tx_t *tx; 3815 uint64_t i; 3816 int error; 3817 uint64_t n, s, txg; 3818 bufwad_t *packbuf, *bigbuf; 3819 uint64_t packobj, packoff, packsize, bigobj, bigoff, bigsize; 3820 uint64_t blocksize = ztest_random_blocksize(); 3821 uint64_t chunksize = blocksize; 3822 uint64_t regions = 997; 3823 uint64_t stride = 123456789ULL; 3824 uint64_t width = 9; 3825 dmu_buf_t *bonus_db; 3826 arc_buf_t **bigbuf_arcbufs; 3827 dmu_object_info_t doi; 3828 3829 /* 3830 * This test uses two objects, packobj and bigobj, that are always 3831 * updated together (i.e. in the same tx) so that their contents are 3832 * in sync and can be compared. Their contents relate to each other 3833 * in a simple way: packobj is a dense array of 'bufwad' structures, 3834 * while bigobj is a sparse array of the same bufwads. Specifically, 3835 * for any index n, there are three bufwads that should be identical: 3836 * 3837 * packobj, at offset n * sizeof (bufwad_t) 3838 * bigobj, at the head of the nth chunk 3839 * bigobj, at the tail of the nth chunk 3840 * 3841 * The chunk size is set equal to bigobj block size so that 3842 * dmu_assign_arcbuf() can be tested for object updates. 3843 */ 3844 3845 /* 3846 * Read the directory info. If it's the first time, set things up. 3847 */ 3848 ztest_od_init(&od[0], id, FTAG, 0, DMU_OT_UINT64_OTHER, blocksize, 0); 3849 ztest_od_init(&od[1], id, FTAG, 1, DMU_OT_UINT64_OTHER, 0, chunksize); 3850 3851 if (ztest_object_init(zd, od, sizeof (od), B_FALSE) != 0) 3852 return; 3853 3854 bigobj = od[0].od_object; 3855 packobj = od[1].od_object; 3856 blocksize = od[0].od_blocksize; 3857 chunksize = blocksize; 3858 ASSERT(chunksize == od[1].od_gen); 3859 3860 VERIFY(dmu_object_info(os, bigobj, &doi) == 0); 3861 VERIFY(ISP2(doi.doi_data_block_size)); 3862 VERIFY(chunksize == doi.doi_data_block_size); 3863 VERIFY(chunksize >= 2 * sizeof (bufwad_t)); 3864 3865 /* 3866 * Pick a random index and compute the offsets into packobj and bigobj. 3867 */ 3868 n = ztest_random(regions) * stride + ztest_random(width); 3869 s = 1 + ztest_random(width - 1); 3870 3871 packoff = n * sizeof (bufwad_t); 3872 packsize = s * sizeof (bufwad_t); 3873 3874 bigoff = n * chunksize; 3875 bigsize = s * chunksize; 3876 3877 packbuf = umem_zalloc(packsize, UMEM_NOFAIL); 3878 bigbuf = umem_zalloc(bigsize, UMEM_NOFAIL); 3879 3880 VERIFY3U(0, ==, dmu_bonus_hold(os, bigobj, FTAG, &bonus_db)); 3881 3882 bigbuf_arcbufs = umem_zalloc(2 * s * sizeof (arc_buf_t *), UMEM_NOFAIL); 3883 3884 /* 3885 * Iteration 0 test zcopy for DB_UNCACHED dbufs. 3886 * Iteration 1 test zcopy to already referenced dbufs. 3887 * Iteration 2 test zcopy to dirty dbuf in the same txg. 3888 * Iteration 3 test zcopy to dbuf dirty in previous txg. 3889 * Iteration 4 test zcopy when dbuf is no longer dirty. 3890 * Iteration 5 test zcopy when it can't be done. 3891 * Iteration 6 one more zcopy write. 3892 */ 3893 for (i = 0; i < 7; i++) { 3894 uint64_t j; 3895 uint64_t off; 3896 3897 /* 3898 * In iteration 5 (i == 5) use arcbufs 3899 * that don't match bigobj blksz to test 3900 * dmu_assign_arcbuf() when it can't directly 3901 * assign an arcbuf to a dbuf. 3902 */ 3903 for (j = 0; j < s; j++) { 3904 if (i != 5 || chunksize < (SPA_MINBLOCKSIZE * 2)) { 3905 bigbuf_arcbufs[j] = 3906 dmu_request_arcbuf(bonus_db, chunksize); 3907 } else { 3908 bigbuf_arcbufs[2 * j] = 3909 dmu_request_arcbuf(bonus_db, chunksize / 2); 3910 bigbuf_arcbufs[2 * j + 1] = 3911 dmu_request_arcbuf(bonus_db, chunksize / 2); 3912 } 3913 } 3914 3915 /* 3916 * Get a tx for the mods to both packobj and bigobj. 3917 */ 3918 tx = dmu_tx_create(os); 3919 3920 dmu_tx_hold_write(tx, packobj, packoff, packsize); 3921 dmu_tx_hold_write(tx, bigobj, bigoff, bigsize); 3922 3923 txg = ztest_tx_assign(tx, TXG_MIGHTWAIT, FTAG); 3924 if (txg == 0) { 3925 umem_free(packbuf, packsize); 3926 umem_free(bigbuf, bigsize); 3927 for (j = 0; j < s; j++) { 3928 if (i != 5 || 3929 chunksize < (SPA_MINBLOCKSIZE * 2)) { 3930 dmu_return_arcbuf(bigbuf_arcbufs[j]); 3931 } else { 3932 dmu_return_arcbuf( 3933 bigbuf_arcbufs[2 * j]); 3934 dmu_return_arcbuf( 3935 bigbuf_arcbufs[2 * j + 1]); 3936 } 3937 } 3938 umem_free(bigbuf_arcbufs, 2 * s * sizeof (arc_buf_t *)); 3939 dmu_buf_rele(bonus_db, FTAG); 3940 return; 3941 } 3942 3943 /* 3944 * 50% of the time don't read objects in the 1st iteration to 3945 * test dmu_assign_arcbuf() for the case when there're no 3946 * existing dbufs for the specified offsets. 3947 */ 3948 if (i != 0 || ztest_random(2) != 0) { 3949 error = dmu_read(os, packobj, packoff, 3950 packsize, packbuf, DMU_READ_PREFETCH); 3951 ASSERT0(error); 3952 error = dmu_read(os, bigobj, bigoff, bigsize, 3953 bigbuf, DMU_READ_PREFETCH); 3954 ASSERT0(error); 3955 } 3956 compare_and_update_pbbufs(s, packbuf, bigbuf, bigsize, 3957 n, chunksize, txg); 3958 3959 /* 3960 * We've verified all the old bufwads, and made new ones. 3961 * Now write them out. 3962 */ 3963 dmu_write(os, packobj, packoff, packsize, packbuf, tx); 3964 if (ztest_opts.zo_verbose >= 7) { 3965 (void) printf("writing offset %llx size %llx" 3966 " txg %llx\n", 3967 (u_longlong_t)bigoff, 3968 (u_longlong_t)bigsize, 3969 (u_longlong_t)txg); 3970 } 3971 for (off = bigoff, j = 0; j < s; j++, off += chunksize) { 3972 dmu_buf_t *dbt; 3973 if (i != 5 || chunksize < (SPA_MINBLOCKSIZE * 2)) { 3974 bcopy((caddr_t)bigbuf + (off - bigoff), 3975 bigbuf_arcbufs[j]->b_data, chunksize); 3976 } else { 3977 bcopy((caddr_t)bigbuf + (off - bigoff), 3978 bigbuf_arcbufs[2 * j]->b_data, 3979 chunksize / 2); 3980 bcopy((caddr_t)bigbuf + (off - bigoff) + 3981 chunksize / 2, 3982 bigbuf_arcbufs[2 * j + 1]->b_data, 3983 chunksize / 2); 3984 } 3985 3986 if (i == 1) { 3987 VERIFY(dmu_buf_hold(os, bigobj, off, 3988 FTAG, &dbt, DMU_READ_NO_PREFETCH) == 0); 3989 } 3990 if (i != 5 || chunksize < (SPA_MINBLOCKSIZE * 2)) { 3991 dmu_assign_arcbuf(bonus_db, off, 3992 bigbuf_arcbufs[j], tx); 3993 } else { 3994 dmu_assign_arcbuf(bonus_db, off, 3995 bigbuf_arcbufs[2 * j], tx); 3996 dmu_assign_arcbuf(bonus_db, 3997 off + chunksize / 2, 3998 bigbuf_arcbufs[2 * j + 1], tx); 3999 } 4000 if (i == 1) { 4001 dmu_buf_rele(dbt, FTAG); 4002 } 4003 } 4004 dmu_tx_commit(tx); 4005 4006 /* 4007 * Sanity check the stuff we just wrote. 4008 */ 4009 { 4010 void *packcheck = umem_alloc(packsize, UMEM_NOFAIL); 4011 void *bigcheck = umem_alloc(bigsize, UMEM_NOFAIL); 4012 4013 VERIFY(0 == dmu_read(os, packobj, packoff, 4014 packsize, packcheck, DMU_READ_PREFETCH)); 4015 VERIFY(0 == dmu_read(os, bigobj, bigoff, 4016 bigsize, bigcheck, DMU_READ_PREFETCH)); 4017 4018 ASSERT(bcmp(packbuf, packcheck, packsize) == 0); 4019 ASSERT(bcmp(bigbuf, bigcheck, bigsize) == 0); 4020 4021 umem_free(packcheck, packsize); 4022 umem_free(bigcheck, bigsize); 4023 } 4024 if (i == 2) { 4025 txg_wait_open(dmu_objset_pool(os), 0); 4026 } else if (i == 3) { 4027 txg_wait_synced(dmu_objset_pool(os), 0); 4028 } 4029 } 4030 4031 dmu_buf_rele(bonus_db, FTAG); 4032 umem_free(packbuf, packsize); 4033 umem_free(bigbuf, bigsize); 4034 umem_free(bigbuf_arcbufs, 2 * s * sizeof (arc_buf_t *)); 4035 } 4036 4037 /* ARGSUSED */ 4038 void 4039 ztest_dmu_write_parallel(ztest_ds_t *zd, uint64_t id) 4040 { 4041 ztest_od_t od[1]; 4042 uint64_t offset = (1ULL << (ztest_random(20) + 43)) + 4043 (ztest_random(ZTEST_RANGE_LOCKS) << SPA_MAXBLOCKSHIFT); 4044 4045 /* 4046 * Have multiple threads write to large offsets in an object 4047 * to verify that parallel writes to an object -- even to the 4048 * same blocks within the object -- doesn't cause any trouble. 4049 */ 4050 ztest_od_init(&od[0], ID_PARALLEL, FTAG, 0, DMU_OT_UINT64_OTHER, 0, 0); 4051 4052 if (ztest_object_init(zd, od, sizeof (od), B_FALSE) != 0) 4053 return; 4054 4055 while (ztest_random(10) != 0) 4056 ztest_io(zd, od[0].od_object, offset); 4057 } 4058 4059 void 4060 ztest_dmu_prealloc(ztest_ds_t *zd, uint64_t id) 4061 { 4062 ztest_od_t od[1]; 4063 uint64_t offset = (1ULL << (ztest_random(4) + SPA_MAXBLOCKSHIFT)) + 4064 (ztest_random(ZTEST_RANGE_LOCKS) << SPA_MAXBLOCKSHIFT); 4065 uint64_t count = ztest_random(20) + 1; 4066 uint64_t blocksize = ztest_random_blocksize(); 4067 void *data; 4068 4069 ztest_od_init(&od[0], id, FTAG, 0, DMU_OT_UINT64_OTHER, blocksize, 0); 4070 4071 if (ztest_object_init(zd, od, sizeof (od), !ztest_random(2)) != 0) 4072 return; 4073 4074 if (ztest_truncate(zd, od[0].od_object, offset, count * blocksize) != 0) 4075 return; 4076 4077 ztest_prealloc(zd, od[0].od_object, offset, count * blocksize); 4078 4079 data = umem_zalloc(blocksize, UMEM_NOFAIL); 4080 4081 while (ztest_random(count) != 0) { 4082 uint64_t randoff = offset + (ztest_random(count) * blocksize); 4083 if (ztest_write(zd, od[0].od_object, randoff, blocksize, 4084 data) != 0) 4085 break; 4086 while (ztest_random(4) != 0) 4087 ztest_io(zd, od[0].od_object, randoff); 4088 } 4089 4090 umem_free(data, blocksize); 4091 } 4092 4093 /* 4094 * Verify that zap_{create,destroy,add,remove,update} work as expected. 4095 */ 4096 #define ZTEST_ZAP_MIN_INTS 1 4097 #define ZTEST_ZAP_MAX_INTS 4 4098 #define ZTEST_ZAP_MAX_PROPS 1000 4099 4100 void 4101 ztest_zap(ztest_ds_t *zd, uint64_t id) 4102 { 4103 objset_t *os = zd->zd_os; 4104 ztest_od_t od[1]; 4105 uint64_t object; 4106 uint64_t txg, last_txg; 4107 uint64_t value[ZTEST_ZAP_MAX_INTS]; 4108 uint64_t zl_ints, zl_intsize, prop; 4109 int i, ints; 4110 dmu_tx_t *tx; 4111 char propname[100], txgname[100]; 4112 int error; 4113 char *hc[2] = { "s.acl.h", ".s.open.h.hyLZlg" }; 4114 4115 ztest_od_init(&od[0], id, FTAG, 0, DMU_OT_ZAP_OTHER, 0, 0); 4116 4117 if (ztest_object_init(zd, od, sizeof (od), !ztest_random(2)) != 0) 4118 return; 4119 4120 object = od[0].od_object; 4121 4122 /* 4123 * Generate a known hash collision, and verify that 4124 * we can lookup and remove both entries. 4125 */ 4126 tx = dmu_tx_create(os); 4127 dmu_tx_hold_zap(tx, object, B_TRUE, NULL); 4128 txg = ztest_tx_assign(tx, TXG_MIGHTWAIT, FTAG); 4129 if (txg == 0) 4130 return; 4131 for (i = 0; i < 2; i++) { 4132 value[i] = i; 4133 VERIFY3U(0, ==, zap_add(os, object, hc[i], sizeof (uint64_t), 4134 1, &value[i], tx)); 4135 } 4136 for (i = 0; i < 2; i++) { 4137 VERIFY3U(EEXIST, ==, zap_add(os, object, hc[i], 4138 sizeof (uint64_t), 1, &value[i], tx)); 4139 VERIFY3U(0, ==, 4140 zap_length(os, object, hc[i], &zl_intsize, &zl_ints)); 4141 ASSERT3U(zl_intsize, ==, sizeof (uint64_t)); 4142 ASSERT3U(zl_ints, ==, 1); 4143 } 4144 for (i = 0; i < 2; i++) { 4145 VERIFY3U(0, ==, zap_remove(os, object, hc[i], tx)); 4146 } 4147 dmu_tx_commit(tx); 4148 4149 /* 4150 * Generate a buch of random entries. 4151 */ 4152 ints = MAX(ZTEST_ZAP_MIN_INTS, object % ZTEST_ZAP_MAX_INTS); 4153 4154 prop = ztest_random(ZTEST_ZAP_MAX_PROPS); 4155 (void) sprintf(propname, "prop_%llu", (u_longlong_t)prop); 4156 (void) sprintf(txgname, "txg_%llu", (u_longlong_t)prop); 4157 bzero(value, sizeof (value)); 4158 last_txg = 0; 4159 4160 /* 4161 * If these zap entries already exist, validate their contents. 4162 */ 4163 error = zap_length(os, object, txgname, &zl_intsize, &zl_ints); 4164 if (error == 0) { 4165 ASSERT3U(zl_intsize, ==, sizeof (uint64_t)); 4166 ASSERT3U(zl_ints, ==, 1); 4167 4168 VERIFY(zap_lookup(os, object, txgname, zl_intsize, 4169 zl_ints, &last_txg) == 0); 4170 4171 VERIFY(zap_length(os, object, propname, &zl_intsize, 4172 &zl_ints) == 0); 4173 4174 ASSERT3U(zl_intsize, ==, sizeof (uint64_t)); 4175 ASSERT3U(zl_ints, ==, ints); 4176 4177 VERIFY(zap_lookup(os, object, propname, zl_intsize, 4178 zl_ints, value) == 0); 4179 4180 for (i = 0; i < ints; i++) { 4181 ASSERT3U(value[i], ==, last_txg + object + i); 4182 } 4183 } else { 4184 ASSERT3U(error, ==, ENOENT); 4185 } 4186 4187 /* 4188 * Atomically update two entries in our zap object. 4189 * The first is named txg_%llu, and contains the txg 4190 * in which the property was last updated. The second 4191 * is named prop_%llu, and the nth element of its value 4192 * should be txg + object + n. 4193 */ 4194 tx = dmu_tx_create(os); 4195 dmu_tx_hold_zap(tx, object, B_TRUE, NULL); 4196 txg = ztest_tx_assign(tx, TXG_MIGHTWAIT, FTAG); 4197 if (txg == 0) 4198 return; 4199 4200 if (last_txg > txg) 4201 fatal(0, "zap future leak: old %llu new %llu", last_txg, txg); 4202 4203 for (i = 0; i < ints; i++) 4204 value[i] = txg + object + i; 4205 4206 VERIFY3U(0, ==, zap_update(os, object, txgname, sizeof (uint64_t), 4207 1, &txg, tx)); 4208 VERIFY3U(0, ==, zap_update(os, object, propname, sizeof (uint64_t), 4209 ints, value, tx)); 4210 4211 dmu_tx_commit(tx); 4212 4213 /* 4214 * Remove a random pair of entries. 4215 */ 4216 prop = ztest_random(ZTEST_ZAP_MAX_PROPS); 4217 (void) sprintf(propname, "prop_%llu", (u_longlong_t)prop); 4218 (void) sprintf(txgname, "txg_%llu", (u_longlong_t)prop); 4219 4220 error = zap_length(os, object, txgname, &zl_intsize, &zl_ints); 4221 4222 if (error == ENOENT) 4223 return; 4224 4225 ASSERT0(error); 4226 4227 tx = dmu_tx_create(os); 4228 dmu_tx_hold_zap(tx, object, B_TRUE, NULL); 4229 txg = ztest_tx_assign(tx, TXG_MIGHTWAIT, FTAG); 4230 if (txg == 0) 4231 return; 4232 VERIFY3U(0, ==, zap_remove(os, object, txgname, tx)); 4233 VERIFY3U(0, ==, zap_remove(os, object, propname, tx)); 4234 dmu_tx_commit(tx); 4235 } 4236 4237 /* 4238 * Testcase to test the upgrading of a microzap to fatzap. 4239 */ 4240 void 4241 ztest_fzap(ztest_ds_t *zd, uint64_t id) 4242 { 4243 objset_t *os = zd->zd_os; 4244 ztest_od_t od[1]; 4245 uint64_t object, txg; 4246 4247 ztest_od_init(&od[0], id, FTAG, 0, DMU_OT_ZAP_OTHER, 0, 0); 4248 4249 if (ztest_object_init(zd, od, sizeof (od), !ztest_random(2)) != 0) 4250 return; 4251 4252 object = od[0].od_object; 4253 4254 /* 4255 * Add entries to this ZAP and make sure it spills over 4256 * and gets upgraded to a fatzap. Also, since we are adding 4257 * 2050 entries we should see ptrtbl growth and leaf-block split. 4258 */ 4259 for (int i = 0; i < 2050; i++) { 4260 char name[ZFS_MAX_DATASET_NAME_LEN]; 4261 uint64_t value = i; 4262 dmu_tx_t *tx; 4263 int error; 4264 4265 (void) snprintf(name, sizeof (name), "fzap-%llu-%llu", 4266 id, value); 4267 4268 tx = dmu_tx_create(os); 4269 dmu_tx_hold_zap(tx, object, B_TRUE, name); 4270 txg = ztest_tx_assign(tx, TXG_MIGHTWAIT, FTAG); 4271 if (txg == 0) 4272 return; 4273 error = zap_add(os, object, name, sizeof (uint64_t), 1, 4274 &value, tx); 4275 ASSERT(error == 0 || error == EEXIST); 4276 dmu_tx_commit(tx); 4277 } 4278 } 4279 4280 /* ARGSUSED */ 4281 void 4282 ztest_zap_parallel(ztest_ds_t *zd, uint64_t id) 4283 { 4284 objset_t *os = zd->zd_os; 4285 ztest_od_t od[1]; 4286 uint64_t txg, object, count, wsize, wc, zl_wsize, zl_wc; 4287 dmu_tx_t *tx; 4288 int i, namelen, error; 4289 int micro = ztest_random(2); 4290 char name[20], string_value[20]; 4291 void *data; 4292 4293 ztest_od_init(&od[0], ID_PARALLEL, FTAG, micro, DMU_OT_ZAP_OTHER, 0, 0); 4294 4295 if (ztest_object_init(zd, od, sizeof (od), B_FALSE) != 0) 4296 return; 4297 4298 object = od[0].od_object; 4299 4300 /* 4301 * Generate a random name of the form 'xxx.....' where each 4302 * x is a random printable character and the dots are dots. 4303 * There are 94 such characters, and the name length goes from 4304 * 6 to 20, so there are 94^3 * 15 = 12,458,760 possible names. 4305 */ 4306 namelen = ztest_random(sizeof (name) - 5) + 5 + 1; 4307 4308 for (i = 0; i < 3; i++) 4309 name[i] = '!' + ztest_random('~' - '!' + 1); 4310 for (; i < namelen - 1; i++) 4311 name[i] = '.'; 4312 name[i] = '\0'; 4313 4314 if ((namelen & 1) || micro) { 4315 wsize = sizeof (txg); 4316 wc = 1; 4317 data = &txg; 4318 } else { 4319 wsize = 1; 4320 wc = namelen; 4321 data = string_value; 4322 } 4323 4324 count = -1ULL; 4325 VERIFY0(zap_count(os, object, &count)); 4326 ASSERT(count != -1ULL); 4327 4328 /* 4329 * Select an operation: length, lookup, add, update, remove. 4330 */ 4331 i = ztest_random(5); 4332 4333 if (i >= 2) { 4334 tx = dmu_tx_create(os); 4335 dmu_tx_hold_zap(tx, object, B_TRUE, NULL); 4336 txg = ztest_tx_assign(tx, TXG_MIGHTWAIT, FTAG); 4337 if (txg == 0) 4338 return; 4339 bcopy(name, string_value, namelen); 4340 } else { 4341 tx = NULL; 4342 txg = 0; 4343 bzero(string_value, namelen); 4344 } 4345 4346 switch (i) { 4347 4348 case 0: 4349 error = zap_length(os, object, name, &zl_wsize, &zl_wc); 4350 if (error == 0) { 4351 ASSERT3U(wsize, ==, zl_wsize); 4352 ASSERT3U(wc, ==, zl_wc); 4353 } else { 4354 ASSERT3U(error, ==, ENOENT); 4355 } 4356 break; 4357 4358 case 1: 4359 error = zap_lookup(os, object, name, wsize, wc, data); 4360 if (error == 0) { 4361 if (data == string_value && 4362 bcmp(name, data, namelen) != 0) 4363 fatal(0, "name '%s' != val '%s' len %d", 4364 name, data, namelen); 4365 } else { 4366 ASSERT3U(error, ==, ENOENT); 4367 } 4368 break; 4369 4370 case 2: 4371 error = zap_add(os, object, name, wsize, wc, data, tx); 4372 ASSERT(error == 0 || error == EEXIST); 4373 break; 4374 4375 case 3: 4376 VERIFY(zap_update(os, object, name, wsize, wc, data, tx) == 0); 4377 break; 4378 4379 case 4: 4380 error = zap_remove(os, object, name, tx); 4381 ASSERT(error == 0 || error == ENOENT); 4382 break; 4383 } 4384 4385 if (tx != NULL) 4386 dmu_tx_commit(tx); 4387 } 4388 4389 /* 4390 * Commit callback data. 4391 */ 4392 typedef struct ztest_cb_data { 4393 list_node_t zcd_node; 4394 uint64_t zcd_txg; 4395 int zcd_expected_err; 4396 boolean_t zcd_added; 4397 boolean_t zcd_called; 4398 spa_t *zcd_spa; 4399 } ztest_cb_data_t; 4400 4401 /* This is the actual commit callback function */ 4402 static void 4403 ztest_commit_callback(void *arg, int error) 4404 { 4405 ztest_cb_data_t *data = arg; 4406 uint64_t synced_txg; 4407 4408 VERIFY(data != NULL); 4409 VERIFY3S(data->zcd_expected_err, ==, error); 4410 VERIFY(!data->zcd_called); 4411 4412 synced_txg = spa_last_synced_txg(data->zcd_spa); 4413 if (data->zcd_txg > synced_txg) 4414 fatal(0, "commit callback of txg %" PRIu64 " called prematurely" 4415 ", last synced txg = %" PRIu64 "\n", data->zcd_txg, 4416 synced_txg); 4417 4418 data->zcd_called = B_TRUE; 4419 4420 if (error == ECANCELED) { 4421 ASSERT0(data->zcd_txg); 4422 ASSERT(!data->zcd_added); 4423 4424 /* 4425 * The private callback data should be destroyed here, but 4426 * since we are going to check the zcd_called field after 4427 * dmu_tx_abort(), we will destroy it there. 4428 */ 4429 return; 4430 } 4431 4432 /* Was this callback added to the global callback list? */ 4433 if (!data->zcd_added) 4434 goto out; 4435 4436 ASSERT3U(data->zcd_txg, !=, 0); 4437 4438 /* Remove our callback from the list */ 4439 (void) mutex_lock(&zcl.zcl_callbacks_lock); 4440 list_remove(&zcl.zcl_callbacks, data); 4441 (void) mutex_unlock(&zcl.zcl_callbacks_lock); 4442 4443 out: 4444 umem_free(data, sizeof (ztest_cb_data_t)); 4445 } 4446 4447 /* Allocate and initialize callback data structure */ 4448 static ztest_cb_data_t * 4449 ztest_create_cb_data(objset_t *os, uint64_t txg) 4450 { 4451 ztest_cb_data_t *cb_data; 4452 4453 cb_data = umem_zalloc(sizeof (ztest_cb_data_t), UMEM_NOFAIL); 4454 4455 cb_data->zcd_txg = txg; 4456 cb_data->zcd_spa = dmu_objset_spa(os); 4457 4458 return (cb_data); 4459 } 4460 4461 /* 4462 * If a number of txgs equal to this threshold have been created after a commit 4463 * callback has been registered but not called, then we assume there is an 4464 * implementation bug. 4465 */ 4466 #define ZTEST_COMMIT_CALLBACK_THRESH (TXG_CONCURRENT_STATES + 2) 4467 4468 /* 4469 * Commit callback test. 4470 */ 4471 void 4472 ztest_dmu_commit_callbacks(ztest_ds_t *zd, uint64_t id) 4473 { 4474 objset_t *os = zd->zd_os; 4475 ztest_od_t od[1]; 4476 dmu_tx_t *tx; 4477 ztest_cb_data_t *cb_data[3], *tmp_cb; 4478 uint64_t old_txg, txg; 4479 int i, error; 4480 4481 ztest_od_init(&od[0], id, FTAG, 0, DMU_OT_UINT64_OTHER, 0, 0); 4482 4483 if (ztest_object_init(zd, od, sizeof (od), B_FALSE) != 0) 4484 return; 4485 4486 tx = dmu_tx_create(os); 4487 4488 cb_data[0] = ztest_create_cb_data(os, 0); 4489 dmu_tx_callback_register(tx, ztest_commit_callback, cb_data[0]); 4490 4491 dmu_tx_hold_write(tx, od[0].od_object, 0, sizeof (uint64_t)); 4492 4493 /* Every once in a while, abort the transaction on purpose */ 4494 if (ztest_random(100) == 0) 4495 error = -1; 4496 4497 if (!error) 4498 error = dmu_tx_assign(tx, TXG_NOWAIT); 4499 4500 txg = error ? 0 : dmu_tx_get_txg(tx); 4501 4502 cb_data[0]->zcd_txg = txg; 4503 cb_data[1] = ztest_create_cb_data(os, txg); 4504 dmu_tx_callback_register(tx, ztest_commit_callback, cb_data[1]); 4505 4506 if (error) { 4507 /* 4508 * It's not a strict requirement to call the registered 4509 * callbacks from inside dmu_tx_abort(), but that's what 4510 * it's supposed to happen in the current implementation 4511 * so we will check for that. 4512 */ 4513 for (i = 0; i < 2; i++) { 4514 cb_data[i]->zcd_expected_err = ECANCELED; 4515 VERIFY(!cb_data[i]->zcd_called); 4516 } 4517 4518 dmu_tx_abort(tx); 4519 4520 for (i = 0; i < 2; i++) { 4521 VERIFY(cb_data[i]->zcd_called); 4522 umem_free(cb_data[i], sizeof (ztest_cb_data_t)); 4523 } 4524 4525 return; 4526 } 4527 4528 cb_data[2] = ztest_create_cb_data(os, txg); 4529 dmu_tx_callback_register(tx, ztest_commit_callback, cb_data[2]); 4530 4531 /* 4532 * Read existing data to make sure there isn't a future leak. 4533 */ 4534 VERIFY(0 == dmu_read(os, od[0].od_object, 0, sizeof (uint64_t), 4535 &old_txg, DMU_READ_PREFETCH)); 4536 4537 if (old_txg > txg) 4538 fatal(0, "future leak: got %" PRIu64 ", open txg is %" PRIu64, 4539 old_txg, txg); 4540 4541 dmu_write(os, od[0].od_object, 0, sizeof (uint64_t), &txg, tx); 4542 4543 (void) mutex_lock(&zcl.zcl_callbacks_lock); 4544 4545 /* 4546 * Since commit callbacks don't have any ordering requirement and since 4547 * it is theoretically possible for a commit callback to be called 4548 * after an arbitrary amount of time has elapsed since its txg has been 4549 * synced, it is difficult to reliably determine whether a commit 4550 * callback hasn't been called due to high load or due to a flawed 4551 * implementation. 4552 * 4553 * In practice, we will assume that if after a certain number of txgs a 4554 * commit callback hasn't been called, then most likely there's an 4555 * implementation bug.. 4556 */ 4557 tmp_cb = list_head(&zcl.zcl_callbacks); 4558 if (tmp_cb != NULL && 4559 (txg - ZTEST_COMMIT_CALLBACK_THRESH) > tmp_cb->zcd_txg) { 4560 fatal(0, "Commit callback threshold exceeded, oldest txg: %" 4561 PRIu64 ", open txg: %" PRIu64 "\n", tmp_cb->zcd_txg, txg); 4562 } 4563 4564 /* 4565 * Let's find the place to insert our callbacks. 4566 * 4567 * Even though the list is ordered by txg, it is possible for the 4568 * insertion point to not be the end because our txg may already be 4569 * quiescing at this point and other callbacks in the open txg 4570 * (from other objsets) may have sneaked in. 4571 */ 4572 tmp_cb = list_tail(&zcl.zcl_callbacks); 4573 while (tmp_cb != NULL && tmp_cb->zcd_txg > txg) 4574 tmp_cb = list_prev(&zcl.zcl_callbacks, tmp_cb); 4575 4576 /* Add the 3 callbacks to the list */ 4577 for (i = 0; i < 3; i++) { 4578 if (tmp_cb == NULL) 4579 list_insert_head(&zcl.zcl_callbacks, cb_data[i]); 4580 else 4581 list_insert_after(&zcl.zcl_callbacks, tmp_cb, 4582 cb_data[i]); 4583 4584 cb_data[i]->zcd_added = B_TRUE; 4585 VERIFY(!cb_data[i]->zcd_called); 4586 4587 tmp_cb = cb_data[i]; 4588 } 4589 4590 (void) mutex_unlock(&zcl.zcl_callbacks_lock); 4591 4592 dmu_tx_commit(tx); 4593 } 4594 4595 /* ARGSUSED */ 4596 void 4597 ztest_dsl_prop_get_set(ztest_ds_t *zd, uint64_t id) 4598 { 4599 zfs_prop_t proplist[] = { 4600 ZFS_PROP_CHECKSUM, 4601 ZFS_PROP_COMPRESSION, 4602 ZFS_PROP_COPIES, 4603 ZFS_PROP_DEDUP 4604 }; 4605 4606 (void) rw_rdlock(&ztest_name_lock); 4607 4608 for (int p = 0; p < sizeof (proplist) / sizeof (proplist[0]); p++) 4609 (void) ztest_dsl_prop_set_uint64(zd->zd_name, proplist[p], 4610 ztest_random_dsl_prop(proplist[p]), (int)ztest_random(2)); 4611 4612 (void) rw_unlock(&ztest_name_lock); 4613 } 4614 4615 /* ARGSUSED */ 4616 void 4617 ztest_spa_prop_get_set(ztest_ds_t *zd, uint64_t id) 4618 { 4619 nvlist_t *props = NULL; 4620 4621 (void) rw_rdlock(&ztest_name_lock); 4622 4623 (void) ztest_spa_prop_set_uint64(ZPOOL_PROP_DEDUPDITTO, 4624 ZIO_DEDUPDITTO_MIN + ztest_random(ZIO_DEDUPDITTO_MIN)); 4625 4626 VERIFY0(spa_prop_get(ztest_spa, &props)); 4627 4628 if (ztest_opts.zo_verbose >= 6) 4629 dump_nvlist(props, 4); 4630 4631 nvlist_free(props); 4632 4633 (void) rw_unlock(&ztest_name_lock); 4634 } 4635 4636 static int 4637 user_release_one(const char *snapname, const char *holdname) 4638 { 4639 nvlist_t *snaps, *holds; 4640 int error; 4641 4642 snaps = fnvlist_alloc(); 4643 holds = fnvlist_alloc(); 4644 fnvlist_add_boolean(holds, holdname); 4645 fnvlist_add_nvlist(snaps, snapname, holds); 4646 fnvlist_free(holds); 4647 error = dsl_dataset_user_release(snaps, NULL); 4648 fnvlist_free(snaps); 4649 return (error); 4650 } 4651 4652 /* 4653 * Test snapshot hold/release and deferred destroy. 4654 */ 4655 void 4656 ztest_dmu_snapshot_hold(ztest_ds_t *zd, uint64_t id) 4657 { 4658 int error; 4659 objset_t *os = zd->zd_os; 4660 objset_t *origin; 4661 char snapname[100]; 4662 char fullname[100]; 4663 char clonename[100]; 4664 char tag[100]; 4665 char osname[ZFS_MAX_DATASET_NAME_LEN]; 4666 nvlist_t *holds; 4667 4668 (void) rw_rdlock(&ztest_name_lock); 4669 4670 dmu_objset_name(os, osname); 4671 4672 (void) snprintf(snapname, sizeof (snapname), "sh1_%llu", id); 4673 (void) snprintf(fullname, sizeof (fullname), "%s@%s", osname, snapname); 4674 (void) snprintf(clonename, sizeof (clonename), 4675 "%s/ch1_%llu", osname, id); 4676 (void) snprintf(tag, sizeof (tag), "tag_%llu", id); 4677 4678 /* 4679 * Clean up from any previous run. 4680 */ 4681 error = dsl_destroy_head(clonename); 4682 if (error != ENOENT) 4683 ASSERT0(error); 4684 error = user_release_one(fullname, tag); 4685 if (error != ESRCH && error != ENOENT) 4686 ASSERT0(error); 4687 error = dsl_destroy_snapshot(fullname, B_FALSE); 4688 if (error != ENOENT) 4689 ASSERT0(error); 4690 4691 /* 4692 * Create snapshot, clone it, mark snap for deferred destroy, 4693 * destroy clone, verify snap was also destroyed. 4694 */ 4695 error = dmu_objset_snapshot_one(osname, snapname); 4696 if (error) { 4697 if (error == ENOSPC) { 4698 ztest_record_enospc("dmu_objset_snapshot"); 4699 goto out; 4700 } 4701 fatal(0, "dmu_objset_snapshot(%s) = %d", fullname, error); 4702 } 4703 4704 error = dmu_objset_clone(clonename, fullname); 4705 if (error) { 4706 if (error == ENOSPC) { 4707 ztest_record_enospc("dmu_objset_clone"); 4708 goto out; 4709 } 4710 fatal(0, "dmu_objset_clone(%s) = %d", clonename, error); 4711 } 4712 4713 error = dsl_destroy_snapshot(fullname, B_TRUE); 4714 if (error) { 4715 fatal(0, "dsl_destroy_snapshot(%s, B_TRUE) = %d", 4716 fullname, error); 4717 } 4718 4719 error = dsl_destroy_head(clonename); 4720 if (error) 4721 fatal(0, "dsl_destroy_head(%s) = %d", clonename, error); 4722 4723 error = dmu_objset_hold(fullname, FTAG, &origin); 4724 if (error != ENOENT) 4725 fatal(0, "dmu_objset_hold(%s) = %d", fullname, error); 4726 4727 /* 4728 * Create snapshot, add temporary hold, verify that we can't 4729 * destroy a held snapshot, mark for deferred destroy, 4730 * release hold, verify snapshot was destroyed. 4731 */ 4732 error = dmu_objset_snapshot_one(osname, snapname); 4733 if (error) { 4734 if (error == ENOSPC) { 4735 ztest_record_enospc("dmu_objset_snapshot"); 4736 goto out; 4737 } 4738 fatal(0, "dmu_objset_snapshot(%s) = %d", fullname, error); 4739 } 4740 4741 holds = fnvlist_alloc(); 4742 fnvlist_add_string(holds, fullname, tag); 4743 error = dsl_dataset_user_hold(holds, 0, NULL); 4744 fnvlist_free(holds); 4745 4746 if (error == ENOSPC) { 4747 ztest_record_enospc("dsl_dataset_user_hold"); 4748 goto out; 4749 } else if (error) { 4750 fatal(0, "dsl_dataset_user_hold(%s, %s) = %u", 4751 fullname, tag, error); 4752 } 4753 4754 error = dsl_destroy_snapshot(fullname, B_FALSE); 4755 if (error != EBUSY) { 4756 fatal(0, "dsl_destroy_snapshot(%s, B_FALSE) = %d", 4757 fullname, error); 4758 } 4759 4760 error = dsl_destroy_snapshot(fullname, B_TRUE); 4761 if (error) { 4762 fatal(0, "dsl_destroy_snapshot(%s, B_TRUE) = %d", 4763 fullname, error); 4764 } 4765 4766 error = user_release_one(fullname, tag); 4767 if (error) 4768 fatal(0, "user_release_one(%s, %s) = %d", fullname, tag, error); 4769 4770 VERIFY3U(dmu_objset_hold(fullname, FTAG, &origin), ==, ENOENT); 4771 4772 out: 4773 (void) rw_unlock(&ztest_name_lock); 4774 } 4775 4776 /* 4777 * Inject random faults into the on-disk data. 4778 */ 4779 /* ARGSUSED */ 4780 void 4781 ztest_fault_inject(ztest_ds_t *zd, uint64_t id) 4782 { 4783 ztest_shared_t *zs = ztest_shared; 4784 spa_t *spa = ztest_spa; 4785 int fd; 4786 uint64_t offset; 4787 uint64_t leaves; 4788 uint64_t bad = 0x1990c0ffeedecade; 4789 uint64_t top, leaf; 4790 char path0[MAXPATHLEN]; 4791 char pathrand[MAXPATHLEN]; 4792 size_t fsize; 4793 int bshift = SPA_OLD_MAXBLOCKSHIFT + 2; /* don't scrog all labels */ 4794 int iters = 1000; 4795 int maxfaults; 4796 int mirror_save; 4797 vdev_t *vd0 = NULL; 4798 uint64_t guid0 = 0; 4799 boolean_t islog = B_FALSE; 4800 4801 VERIFY(mutex_lock(&ztest_vdev_lock) == 0); 4802 maxfaults = MAXFAULTS(); 4803 leaves = MAX(zs->zs_mirrors, 1) * ztest_opts.zo_raidz; 4804 mirror_save = zs->zs_mirrors; 4805 VERIFY(mutex_unlock(&ztest_vdev_lock) == 0); 4806 4807 ASSERT(leaves >= 1); 4808 4809 /* 4810 * Grab the name lock as reader. There are some operations 4811 * which don't like to have their vdevs changed while 4812 * they are in progress (i.e. spa_change_guid). Those 4813 * operations will have grabbed the name lock as writer. 4814 */ 4815 (void) rw_rdlock(&ztest_name_lock); 4816 4817 /* 4818 * We need SCL_STATE here because we're going to look at vd0->vdev_tsd. 4819 */ 4820 spa_config_enter(spa, SCL_STATE, FTAG, RW_READER); 4821 4822 if (ztest_random(2) == 0) { 4823 /* 4824 * Inject errors on a normal data device or slog device. 4825 */ 4826 top = ztest_random_vdev_top(spa, B_TRUE); 4827 leaf = ztest_random(leaves) + zs->zs_splits; 4828 4829 /* 4830 * Generate paths to the first leaf in this top-level vdev, 4831 * and to the random leaf we selected. We'll induce transient 4832 * write failures and random online/offline activity on leaf 0, 4833 * and we'll write random garbage to the randomly chosen leaf. 4834 */ 4835 (void) snprintf(path0, sizeof (path0), ztest_dev_template, 4836 ztest_opts.zo_dir, ztest_opts.zo_pool, 4837 top * leaves + zs->zs_splits); 4838 (void) snprintf(pathrand, sizeof (pathrand), ztest_dev_template, 4839 ztest_opts.zo_dir, ztest_opts.zo_pool, 4840 top * leaves + leaf); 4841 4842 vd0 = vdev_lookup_by_path(spa->spa_root_vdev, path0); 4843 if (vd0 != NULL && vd0->vdev_top->vdev_islog) 4844 islog = B_TRUE; 4845 4846 /* 4847 * If the top-level vdev needs to be resilvered 4848 * then we only allow faults on the device that is 4849 * resilvering. 4850 */ 4851 if (vd0 != NULL && maxfaults != 1 && 4852 (!vdev_resilver_needed(vd0->vdev_top, NULL, NULL) || 4853 vd0->vdev_resilver_txg != 0)) { 4854 /* 4855 * Make vd0 explicitly claim to be unreadable, 4856 * or unwriteable, or reach behind its back 4857 * and close the underlying fd. We can do this if 4858 * maxfaults == 0 because we'll fail and reexecute, 4859 * and we can do it if maxfaults >= 2 because we'll 4860 * have enough redundancy. If maxfaults == 1, the 4861 * combination of this with injection of random data 4862 * corruption below exceeds the pool's fault tolerance. 4863 */ 4864 vdev_file_t *vf = vd0->vdev_tsd; 4865 4866 if (vf != NULL && ztest_random(3) == 0) { 4867 (void) close(vf->vf_vnode->v_fd); 4868 vf->vf_vnode->v_fd = -1; 4869 } else if (ztest_random(2) == 0) { 4870 vd0->vdev_cant_read = B_TRUE; 4871 } else { 4872 vd0->vdev_cant_write = B_TRUE; 4873 } 4874 guid0 = vd0->vdev_guid; 4875 } 4876 } else { 4877 /* 4878 * Inject errors on an l2cache device. 4879 */ 4880 spa_aux_vdev_t *sav = &spa->spa_l2cache; 4881 4882 if (sav->sav_count == 0) { 4883 spa_config_exit(spa, SCL_STATE, FTAG); 4884 (void) rw_unlock(&ztest_name_lock); 4885 return; 4886 } 4887 vd0 = sav->sav_vdevs[ztest_random(sav->sav_count)]; 4888 guid0 = vd0->vdev_guid; 4889 (void) strcpy(path0, vd0->vdev_path); 4890 (void) strcpy(pathrand, vd0->vdev_path); 4891 4892 leaf = 0; 4893 leaves = 1; 4894 maxfaults = INT_MAX; /* no limit on cache devices */ 4895 } 4896 4897 spa_config_exit(spa, SCL_STATE, FTAG); 4898 (void) rw_unlock(&ztest_name_lock); 4899 4900 /* 4901 * If we can tolerate two or more faults, or we're dealing 4902 * with a slog, randomly online/offline vd0. 4903 */ 4904 if ((maxfaults >= 2 || islog) && guid0 != 0) { 4905 if (ztest_random(10) < 6) { 4906 int flags = (ztest_random(2) == 0 ? 4907 ZFS_OFFLINE_TEMPORARY : 0); 4908 4909 /* 4910 * We have to grab the zs_name_lock as writer to 4911 * prevent a race between offlining a slog and 4912 * destroying a dataset. Offlining the slog will 4913 * grab a reference on the dataset which may cause 4914 * dmu_objset_destroy() to fail with EBUSY thus 4915 * leaving the dataset in an inconsistent state. 4916 */ 4917 if (islog) 4918 (void) rw_wrlock(&ztest_name_lock); 4919 4920 VERIFY(vdev_offline(spa, guid0, flags) != EBUSY); 4921 4922 if (islog) 4923 (void) rw_unlock(&ztest_name_lock); 4924 } else { 4925 /* 4926 * Ideally we would like to be able to randomly 4927 * call vdev_[on|off]line without holding locks 4928 * to force unpredictable failures but the side 4929 * effects of vdev_[on|off]line prevent us from 4930 * doing so. We grab the ztest_vdev_lock here to 4931 * prevent a race between injection testing and 4932 * aux_vdev removal. 4933 */ 4934 VERIFY(mutex_lock(&ztest_vdev_lock) == 0); 4935 (void) vdev_online(spa, guid0, 0, NULL); 4936 VERIFY(mutex_unlock(&ztest_vdev_lock) == 0); 4937 } 4938 } 4939 4940 if (maxfaults == 0) 4941 return; 4942 4943 /* 4944 * We have at least single-fault tolerance, so inject data corruption. 4945 */ 4946 fd = open(pathrand, O_RDWR); 4947 4948 if (fd == -1) /* we hit a gap in the device namespace */ 4949 return; 4950 4951 fsize = lseek(fd, 0, SEEK_END); 4952 4953 while (--iters != 0) { 4954 offset = ztest_random(fsize / (leaves << bshift)) * 4955 (leaves << bshift) + (leaf << bshift) + 4956 (ztest_random(1ULL << (bshift - 1)) & -8ULL); 4957 4958 if (offset >= fsize) 4959 continue; 4960 4961 VERIFY(mutex_lock(&ztest_vdev_lock) == 0); 4962 if (mirror_save != zs->zs_mirrors) { 4963 VERIFY(mutex_unlock(&ztest_vdev_lock) == 0); 4964 (void) close(fd); 4965 return; 4966 } 4967 4968 if (pwrite(fd, &bad, sizeof (bad), offset) != sizeof (bad)) 4969 fatal(1, "can't inject bad word at 0x%llx in %s", 4970 offset, pathrand); 4971 4972 VERIFY(mutex_unlock(&ztest_vdev_lock) == 0); 4973 4974 if (ztest_opts.zo_verbose >= 7) 4975 (void) printf("injected bad word into %s," 4976 " offset 0x%llx\n", pathrand, (u_longlong_t)offset); 4977 } 4978 4979 (void) close(fd); 4980 } 4981 4982 /* 4983 * Verify that DDT repair works as expected. 4984 */ 4985 void 4986 ztest_ddt_repair(ztest_ds_t *zd, uint64_t id) 4987 { 4988 ztest_shared_t *zs = ztest_shared; 4989 spa_t *spa = ztest_spa; 4990 objset_t *os = zd->zd_os; 4991 ztest_od_t od[1]; 4992 uint64_t object, blocksize, txg, pattern, psize; 4993 enum zio_checksum checksum = spa_dedup_checksum(spa); 4994 dmu_buf_t *db; 4995 dmu_tx_t *tx; 4996 void *buf; 4997 blkptr_t blk; 4998 int copies = 2 * ZIO_DEDUPDITTO_MIN; 4999 5000 blocksize = ztest_random_blocksize(); 5001 blocksize = MIN(blocksize, 2048); /* because we write so many */ 5002 5003 ztest_od_init(&od[0], id, FTAG, 0, DMU_OT_UINT64_OTHER, blocksize, 0); 5004 5005 if (ztest_object_init(zd, od, sizeof (od), B_FALSE) != 0) 5006 return; 5007 5008 /* 5009 * Take the name lock as writer to prevent anyone else from changing 5010 * the pool and dataset properies we need to maintain during this test. 5011 */ 5012 (void) rw_wrlock(&ztest_name_lock); 5013 5014 if (ztest_dsl_prop_set_uint64(zd->zd_name, ZFS_PROP_DEDUP, checksum, 5015 B_FALSE) != 0 || 5016 ztest_dsl_prop_set_uint64(zd->zd_name, ZFS_PROP_COPIES, 1, 5017 B_FALSE) != 0) { 5018 (void) rw_unlock(&ztest_name_lock); 5019 return; 5020 } 5021 5022 object = od[0].od_object; 5023 blocksize = od[0].od_blocksize; 5024 pattern = zs->zs_guid ^ dmu_objset_fsid_guid(os); 5025 5026 ASSERT(object != 0); 5027 5028 tx = dmu_tx_create(os); 5029 dmu_tx_hold_write(tx, object, 0, copies * blocksize); 5030 txg = ztest_tx_assign(tx, TXG_WAIT, FTAG); 5031 if (txg == 0) { 5032 (void) rw_unlock(&ztest_name_lock); 5033 return; 5034 } 5035 5036 /* 5037 * Write all the copies of our block. 5038 */ 5039 for (int i = 0; i < copies; i++) { 5040 uint64_t offset = i * blocksize; 5041 int error = dmu_buf_hold(os, object, offset, FTAG, &db, 5042 DMU_READ_NO_PREFETCH); 5043 if (error != 0) { 5044 fatal(B_FALSE, "dmu_buf_hold(%p, %llu, %llu) = %u", 5045 os, (long long)object, (long long) offset, error); 5046 } 5047 ASSERT(db->db_offset == offset); 5048 ASSERT(db->db_size == blocksize); 5049 ASSERT(ztest_pattern_match(db->db_data, db->db_size, pattern) || 5050 ztest_pattern_match(db->db_data, db->db_size, 0ULL)); 5051 dmu_buf_will_fill(db, tx); 5052 ztest_pattern_set(db->db_data, db->db_size, pattern); 5053 dmu_buf_rele(db, FTAG); 5054 } 5055 5056 dmu_tx_commit(tx); 5057 txg_wait_synced(spa_get_dsl(spa), txg); 5058 5059 /* 5060 * Find out what block we got. 5061 */ 5062 VERIFY0(dmu_buf_hold(os, object, 0, FTAG, &db, 5063 DMU_READ_NO_PREFETCH)); 5064 blk = *((dmu_buf_impl_t *)db)->db_blkptr; 5065 dmu_buf_rele(db, FTAG); 5066 5067 /* 5068 * Damage the block. Dedup-ditto will save us when we read it later. 5069 */ 5070 psize = BP_GET_PSIZE(&blk); 5071 buf = zio_buf_alloc(psize); 5072 ztest_pattern_set(buf, psize, ~pattern); 5073 5074 (void) zio_wait(zio_rewrite(NULL, spa, 0, &blk, 5075 buf, psize, NULL, NULL, ZIO_PRIORITY_SYNC_WRITE, 5076 ZIO_FLAG_CANFAIL | ZIO_FLAG_INDUCE_DAMAGE, NULL)); 5077 5078 zio_buf_free(buf, psize); 5079 5080 (void) rw_unlock(&ztest_name_lock); 5081 } 5082 5083 /* 5084 * Scrub the pool. 5085 */ 5086 /* ARGSUSED */ 5087 void 5088 ztest_scrub(ztest_ds_t *zd, uint64_t id) 5089 { 5090 spa_t *spa = ztest_spa; 5091 5092 (void) spa_scan(spa, POOL_SCAN_SCRUB); 5093 (void) poll(NULL, 0, 100); /* wait a moment, then force a restart */ 5094 (void) spa_scan(spa, POOL_SCAN_SCRUB); 5095 } 5096 5097 /* 5098 * Change the guid for the pool. 5099 */ 5100 /* ARGSUSED */ 5101 void 5102 ztest_reguid(ztest_ds_t *zd, uint64_t id) 5103 { 5104 spa_t *spa = ztest_spa; 5105 uint64_t orig, load; 5106 int error; 5107 5108 orig = spa_guid(spa); 5109 load = spa_load_guid(spa); 5110 5111 (void) rw_wrlock(&ztest_name_lock); 5112 error = spa_change_guid(spa); 5113 (void) rw_unlock(&ztest_name_lock); 5114 5115 if (error != 0) 5116 return; 5117 5118 if (ztest_opts.zo_verbose >= 4) { 5119 (void) printf("Changed guid old %llu -> %llu\n", 5120 (u_longlong_t)orig, (u_longlong_t)spa_guid(spa)); 5121 } 5122 5123 VERIFY3U(orig, !=, spa_guid(spa)); 5124 VERIFY3U(load, ==, spa_load_guid(spa)); 5125 } 5126 5127 /* 5128 * Rename the pool to a different name and then rename it back. 5129 */ 5130 /* ARGSUSED */ 5131 void 5132 ztest_spa_rename(ztest_ds_t *zd, uint64_t id) 5133 { 5134 char *oldname, *newname; 5135 spa_t *spa; 5136 5137 (void) rw_wrlock(&ztest_name_lock); 5138 5139 oldname = ztest_opts.zo_pool; 5140 newname = umem_alloc(strlen(oldname) + 5, UMEM_NOFAIL); 5141 (void) strcpy(newname, oldname); 5142 (void) strcat(newname, "_tmp"); 5143 5144 /* 5145 * Do the rename 5146 */ 5147 VERIFY3U(0, ==, spa_rename(oldname, newname)); 5148 5149 /* 5150 * Try to open it under the old name, which shouldn't exist 5151 */ 5152 VERIFY3U(ENOENT, ==, spa_open(oldname, &spa, FTAG)); 5153 5154 /* 5155 * Open it under the new name and make sure it's still the same spa_t. 5156 */ 5157 VERIFY3U(0, ==, spa_open(newname, &spa, FTAG)); 5158 5159 ASSERT(spa == ztest_spa); 5160 spa_close(spa, FTAG); 5161 5162 /* 5163 * Rename it back to the original 5164 */ 5165 VERIFY3U(0, ==, spa_rename(newname, oldname)); 5166 5167 /* 5168 * Make sure it can still be opened 5169 */ 5170 VERIFY3U(0, ==, spa_open(oldname, &spa, FTAG)); 5171 5172 ASSERT(spa == ztest_spa); 5173 spa_close(spa, FTAG); 5174 5175 umem_free(newname, strlen(newname) + 1); 5176 5177 (void) rw_unlock(&ztest_name_lock); 5178 } 5179 5180 /* 5181 * Verify pool integrity by running zdb. 5182 */ 5183 static void 5184 ztest_run_zdb(char *pool) 5185 { 5186 int status; 5187 char zdb[MAXPATHLEN + MAXNAMELEN + 20]; 5188 char zbuf[1024]; 5189 char *bin; 5190 char *ztest; 5191 char *isa; 5192 int isalen; 5193 FILE *fp; 5194 5195 (void) realpath(getexecname(), zdb); 5196 5197 /* zdb lives in /usr/sbin, while ztest lives in /usr/bin */ 5198 bin = strstr(zdb, "/usr/bin/"); 5199 ztest = strstr(bin, "/ztest"); 5200 isa = bin + 8; 5201 isalen = ztest - isa; 5202 isa = strdup(isa); 5203 /* LINTED */ 5204 (void) sprintf(bin, 5205 "/usr/sbin%.*s/zdb -bcc%s%s -d -U %s %s", 5206 isalen, 5207 isa, 5208 ztest_opts.zo_verbose >= 3 ? "s" : "", 5209 ztest_opts.zo_verbose >= 4 ? "v" : "", 5210 spa_config_path, 5211 pool); 5212 free(isa); 5213 5214 if (ztest_opts.zo_verbose >= 5) 5215 (void) printf("Executing %s\n", strstr(zdb, "zdb ")); 5216 5217 fp = popen(zdb, "r"); 5218 5219 while (fgets(zbuf, sizeof (zbuf), fp) != NULL) 5220 if (ztest_opts.zo_verbose >= 3) 5221 (void) printf("%s", zbuf); 5222 5223 status = pclose(fp); 5224 5225 if (status == 0) 5226 return; 5227 5228 ztest_dump_core = 0; 5229 if (WIFEXITED(status)) 5230 fatal(0, "'%s' exit code %d", zdb, WEXITSTATUS(status)); 5231 else 5232 fatal(0, "'%s' died with signal %d", zdb, WTERMSIG(status)); 5233 } 5234 5235 static void 5236 ztest_walk_pool_directory(char *header) 5237 { 5238 spa_t *spa = NULL; 5239 5240 if (ztest_opts.zo_verbose >= 6) 5241 (void) printf("%s\n", header); 5242 5243 mutex_enter(&spa_namespace_lock); 5244 while ((spa = spa_next(spa)) != NULL) 5245 if (ztest_opts.zo_verbose >= 6) 5246 (void) printf("\t%s\n", spa_name(spa)); 5247 mutex_exit(&spa_namespace_lock); 5248 } 5249 5250 static void 5251 ztest_spa_import_export(char *oldname, char *newname) 5252 { 5253 nvlist_t *config, *newconfig; 5254 uint64_t pool_guid; 5255 spa_t *spa; 5256 int error; 5257 5258 if (ztest_opts.zo_verbose >= 4) { 5259 (void) printf("import/export: old = %s, new = %s\n", 5260 oldname, newname); 5261 } 5262 5263 /* 5264 * Clean up from previous runs. 5265 */ 5266 (void) spa_destroy(newname); 5267 5268 /* 5269 * Get the pool's configuration and guid. 5270 */ 5271 VERIFY3U(0, ==, spa_open(oldname, &spa, FTAG)); 5272 5273 /* 5274 * Kick off a scrub to tickle scrub/export races. 5275 */ 5276 if (ztest_random(2) == 0) 5277 (void) spa_scan(spa, POOL_SCAN_SCRUB); 5278 5279 pool_guid = spa_guid(spa); 5280 spa_close(spa, FTAG); 5281 5282 ztest_walk_pool_directory("pools before export"); 5283 5284 /* 5285 * Export it. 5286 */ 5287 VERIFY3U(0, ==, spa_export(oldname, &config, B_FALSE, B_FALSE)); 5288 5289 ztest_walk_pool_directory("pools after export"); 5290 5291 /* 5292 * Try to import it. 5293 */ 5294 newconfig = spa_tryimport(config); 5295 ASSERT(newconfig != NULL); 5296 nvlist_free(newconfig); 5297 5298 /* 5299 * Import it under the new name. 5300 */ 5301 error = spa_import(newname, config, NULL, 0); 5302 if (error != 0) { 5303 dump_nvlist(config, 0); 5304 fatal(B_FALSE, "couldn't import pool %s as %s: error %u", 5305 oldname, newname, error); 5306 } 5307 5308 ztest_walk_pool_directory("pools after import"); 5309 5310 /* 5311 * Try to import it again -- should fail with EEXIST. 5312 */ 5313 VERIFY3U(EEXIST, ==, spa_import(newname, config, NULL, 0)); 5314 5315 /* 5316 * Try to import it under a different name -- should fail with EEXIST. 5317 */ 5318 VERIFY3U(EEXIST, ==, spa_import(oldname, config, NULL, 0)); 5319 5320 /* 5321 * Verify that the pool is no longer visible under the old name. 5322 */ 5323 VERIFY3U(ENOENT, ==, spa_open(oldname, &spa, FTAG)); 5324 5325 /* 5326 * Verify that we can open and close the pool using the new name. 5327 */ 5328 VERIFY3U(0, ==, spa_open(newname, &spa, FTAG)); 5329 ASSERT(pool_guid == spa_guid(spa)); 5330 spa_close(spa, FTAG); 5331 5332 nvlist_free(config); 5333 } 5334 5335 static void 5336 ztest_resume(spa_t *spa) 5337 { 5338 if (spa_suspended(spa) && ztest_opts.zo_verbose >= 6) 5339 (void) printf("resuming from suspended state\n"); 5340 spa_vdev_state_enter(spa, SCL_NONE); 5341 vdev_clear(spa, NULL); 5342 (void) spa_vdev_state_exit(spa, NULL, 0); 5343 (void) zio_resume(spa); 5344 } 5345 5346 static void * 5347 ztest_resume_thread(void *arg) 5348 { 5349 spa_t *spa = arg; 5350 5351 while (!ztest_exiting) { 5352 if (spa_suspended(spa)) 5353 ztest_resume(spa); 5354 (void) poll(NULL, 0, 100); 5355 } 5356 return (NULL); 5357 } 5358 5359 static void * 5360 ztest_deadman_thread(void *arg) 5361 { 5362 ztest_shared_t *zs = arg; 5363 spa_t *spa = ztest_spa; 5364 hrtime_t delta, total = 0; 5365 5366 for (;;) { 5367 delta = zs->zs_thread_stop - zs->zs_thread_start + 5368 MSEC2NSEC(zfs_deadman_synctime_ms); 5369 5370 (void) poll(NULL, 0, (int)NSEC2MSEC(delta)); 5371 5372 /* 5373 * If the pool is suspended then fail immediately. Otherwise, 5374 * check to see if the pool is making any progress. If 5375 * vdev_deadman() discovers that there hasn't been any recent 5376 * I/Os then it will end up aborting the tests. 5377 */ 5378 if (spa_suspended(spa) || spa->spa_root_vdev == NULL) { 5379 fatal(0, "aborting test after %llu seconds because " 5380 "pool has transitioned to a suspended state.", 5381 zfs_deadman_synctime_ms / 1000); 5382 return (NULL); 5383 } 5384 vdev_deadman(spa->spa_root_vdev); 5385 5386 total += zfs_deadman_synctime_ms/1000; 5387 (void) printf("ztest has been running for %lld seconds\n", 5388 total); 5389 } 5390 } 5391 5392 static void 5393 ztest_execute(int test, ztest_info_t *zi, uint64_t id) 5394 { 5395 ztest_ds_t *zd = &ztest_ds[id % ztest_opts.zo_datasets]; 5396 ztest_shared_callstate_t *zc = ZTEST_GET_SHARED_CALLSTATE(test); 5397 hrtime_t functime = gethrtime(); 5398 5399 for (int i = 0; i < zi->zi_iters; i++) 5400 zi->zi_func(zd, id); 5401 5402 functime = gethrtime() - functime; 5403 5404 atomic_add_64(&zc->zc_count, 1); 5405 atomic_add_64(&zc->zc_time, functime); 5406 5407 if (ztest_opts.zo_verbose >= 4) { 5408 Dl_info dli; 5409 (void) dladdr((void *)zi->zi_func, &dli); 5410 (void) printf("%6.2f sec in %s\n", 5411 (double)functime / NANOSEC, dli.dli_sname); 5412 } 5413 } 5414 5415 static void * 5416 ztest_thread(void *arg) 5417 { 5418 int rand; 5419 uint64_t id = (uintptr_t)arg; 5420 ztest_shared_t *zs = ztest_shared; 5421 uint64_t call_next; 5422 hrtime_t now; 5423 ztest_info_t *zi; 5424 ztest_shared_callstate_t *zc; 5425 5426 while ((now = gethrtime()) < zs->zs_thread_stop) { 5427 /* 5428 * See if it's time to force a crash. 5429 */ 5430 if (now > zs->zs_thread_kill) 5431 ztest_kill(zs); 5432 5433 /* 5434 * If we're getting ENOSPC with some regularity, stop. 5435 */ 5436 if (zs->zs_enospc_count > 10) 5437 break; 5438 5439 /* 5440 * Pick a random function to execute. 5441 */ 5442 rand = ztest_random(ZTEST_FUNCS); 5443 zi = &ztest_info[rand]; 5444 zc = ZTEST_GET_SHARED_CALLSTATE(rand); 5445 call_next = zc->zc_next; 5446 5447 if (now >= call_next && 5448 atomic_cas_64(&zc->zc_next, call_next, call_next + 5449 ztest_random(2 * zi->zi_interval[0] + 1)) == call_next) { 5450 ztest_execute(rand, zi, id); 5451 } 5452 } 5453 5454 return (NULL); 5455 } 5456 5457 static void 5458 ztest_dataset_name(char *dsname, char *pool, int d) 5459 { 5460 (void) snprintf(dsname, ZFS_MAX_DATASET_NAME_LEN, "%s/ds_%d", pool, d); 5461 } 5462 5463 static void 5464 ztest_dataset_destroy(int d) 5465 { 5466 char name[ZFS_MAX_DATASET_NAME_LEN]; 5467 5468 ztest_dataset_name(name, ztest_opts.zo_pool, d); 5469 5470 if (ztest_opts.zo_verbose >= 3) 5471 (void) printf("Destroying %s to free up space\n", name); 5472 5473 /* 5474 * Cleanup any non-standard clones and snapshots. In general, 5475 * ztest thread t operates on dataset (t % zopt_datasets), 5476 * so there may be more than one thing to clean up. 5477 */ 5478 for (int t = d; t < ztest_opts.zo_threads; 5479 t += ztest_opts.zo_datasets) { 5480 ztest_dsl_dataset_cleanup(name, t); 5481 } 5482 5483 (void) dmu_objset_find(name, ztest_objset_destroy_cb, NULL, 5484 DS_FIND_SNAPSHOTS | DS_FIND_CHILDREN); 5485 } 5486 5487 static void 5488 ztest_dataset_dirobj_verify(ztest_ds_t *zd) 5489 { 5490 uint64_t usedobjs, dirobjs, scratch; 5491 5492 /* 5493 * ZTEST_DIROBJ is the object directory for the entire dataset. 5494 * Therefore, the number of objects in use should equal the 5495 * number of ZTEST_DIROBJ entries, +1 for ZTEST_DIROBJ itself. 5496 * If not, we have an object leak. 5497 * 5498 * Note that we can only check this in ztest_dataset_open(), 5499 * when the open-context and syncing-context values agree. 5500 * That's because zap_count() returns the open-context value, 5501 * while dmu_objset_space() returns the rootbp fill count. 5502 */ 5503 VERIFY3U(0, ==, zap_count(zd->zd_os, ZTEST_DIROBJ, &dirobjs)); 5504 dmu_objset_space(zd->zd_os, &scratch, &scratch, &usedobjs, &scratch); 5505 ASSERT3U(dirobjs + 1, ==, usedobjs); 5506 } 5507 5508 static int 5509 ztest_dataset_open(int d) 5510 { 5511 ztest_ds_t *zd = &ztest_ds[d]; 5512 uint64_t committed_seq = ZTEST_GET_SHARED_DS(d)->zd_seq; 5513 objset_t *os; 5514 zilog_t *zilog; 5515 char name[ZFS_MAX_DATASET_NAME_LEN]; 5516 int error; 5517 5518 ztest_dataset_name(name, ztest_opts.zo_pool, d); 5519 5520 (void) rw_rdlock(&ztest_name_lock); 5521 5522 error = ztest_dataset_create(name); 5523 if (error == ENOSPC) { 5524 (void) rw_unlock(&ztest_name_lock); 5525 ztest_record_enospc(FTAG); 5526 return (error); 5527 } 5528 ASSERT(error == 0 || error == EEXIST); 5529 5530 VERIFY0(dmu_objset_own(name, DMU_OST_OTHER, B_FALSE, zd, &os)); 5531 (void) rw_unlock(&ztest_name_lock); 5532 5533 ztest_zd_init(zd, ZTEST_GET_SHARED_DS(d), os); 5534 5535 zilog = zd->zd_zilog; 5536 5537 if (zilog->zl_header->zh_claim_lr_seq != 0 && 5538 zilog->zl_header->zh_claim_lr_seq < committed_seq) 5539 fatal(0, "missing log records: claimed %llu < committed %llu", 5540 zilog->zl_header->zh_claim_lr_seq, committed_seq); 5541 5542 ztest_dataset_dirobj_verify(zd); 5543 5544 zil_replay(os, zd, ztest_replay_vector); 5545 5546 ztest_dataset_dirobj_verify(zd); 5547 5548 if (ztest_opts.zo_verbose >= 6) 5549 (void) printf("%s replay %llu blocks, %llu records, seq %llu\n", 5550 zd->zd_name, 5551 (u_longlong_t)zilog->zl_parse_blk_count, 5552 (u_longlong_t)zilog->zl_parse_lr_count, 5553 (u_longlong_t)zilog->zl_replaying_seq); 5554 5555 zilog = zil_open(os, ztest_get_data); 5556 5557 if (zilog->zl_replaying_seq != 0 && 5558 zilog->zl_replaying_seq < committed_seq) 5559 fatal(0, "missing log records: replayed %llu < committed %llu", 5560 zilog->zl_replaying_seq, committed_seq); 5561 5562 return (0); 5563 } 5564 5565 static void 5566 ztest_dataset_close(int d) 5567 { 5568 ztest_ds_t *zd = &ztest_ds[d]; 5569 5570 zil_close(zd->zd_zilog); 5571 dmu_objset_disown(zd->zd_os, zd); 5572 5573 ztest_zd_fini(zd); 5574 } 5575 5576 /* 5577 * Kick off threads to run tests on all datasets in parallel. 5578 */ 5579 static void 5580 ztest_run(ztest_shared_t *zs) 5581 { 5582 thread_t *tid; 5583 spa_t *spa; 5584 objset_t *os; 5585 thread_t resume_tid; 5586 int error; 5587 5588 ztest_exiting = B_FALSE; 5589 5590 /* 5591 * Initialize parent/child shared state. 5592 */ 5593 VERIFY(_mutex_init(&ztest_vdev_lock, USYNC_THREAD, NULL) == 0); 5594 VERIFY(rwlock_init(&ztest_name_lock, USYNC_THREAD, NULL) == 0); 5595 5596 zs->zs_thread_start = gethrtime(); 5597 zs->zs_thread_stop = 5598 zs->zs_thread_start + ztest_opts.zo_passtime * NANOSEC; 5599 zs->zs_thread_stop = MIN(zs->zs_thread_stop, zs->zs_proc_stop); 5600 zs->zs_thread_kill = zs->zs_thread_stop; 5601 if (ztest_random(100) < ztest_opts.zo_killrate) { 5602 zs->zs_thread_kill -= 5603 ztest_random(ztest_opts.zo_passtime * NANOSEC); 5604 } 5605 5606 (void) _mutex_init(&zcl.zcl_callbacks_lock, USYNC_THREAD, NULL); 5607 5608 list_create(&zcl.zcl_callbacks, sizeof (ztest_cb_data_t), 5609 offsetof(ztest_cb_data_t, zcd_node)); 5610 5611 /* 5612 * Open our pool. 5613 */ 5614 kernel_init(FREAD | FWRITE); 5615 VERIFY0(spa_open(ztest_opts.zo_pool, &spa, FTAG)); 5616 spa->spa_debug = B_TRUE; 5617 metaslab_preload_limit = ztest_random(20) + 1; 5618 ztest_spa = spa; 5619 5620 VERIFY0(dmu_objset_own(ztest_opts.zo_pool, 5621 DMU_OST_ANY, B_TRUE, FTAG, &os)); 5622 zs->zs_guid = dmu_objset_fsid_guid(os); 5623 dmu_objset_disown(os, FTAG); 5624 5625 spa->spa_dedup_ditto = 2 * ZIO_DEDUPDITTO_MIN; 5626 5627 /* 5628 * We don't expect the pool to suspend unless maxfaults == 0, 5629 * in which case ztest_fault_inject() temporarily takes away 5630 * the only valid replica. 5631 */ 5632 if (MAXFAULTS() == 0) 5633 spa->spa_failmode = ZIO_FAILURE_MODE_WAIT; 5634 else 5635 spa->spa_failmode = ZIO_FAILURE_MODE_PANIC; 5636 5637 /* 5638 * Create a thread to periodically resume suspended I/O. 5639 */ 5640 VERIFY(thr_create(0, 0, ztest_resume_thread, spa, THR_BOUND, 5641 &resume_tid) == 0); 5642 5643 /* 5644 * Create a deadman thread to abort() if we hang. 5645 */ 5646 VERIFY(thr_create(0, 0, ztest_deadman_thread, zs, THR_BOUND, 5647 NULL) == 0); 5648 5649 /* 5650 * Verify that we can safely inquire about about any object, 5651 * whether it's allocated or not. To make it interesting, 5652 * we probe a 5-wide window around each power of two. 5653 * This hits all edge cases, including zero and the max. 5654 */ 5655 for (int t = 0; t < 64; t++) { 5656 for (int d = -5; d <= 5; d++) { 5657 error = dmu_object_info(spa->spa_meta_objset, 5658 (1ULL << t) + d, NULL); 5659 ASSERT(error == 0 || error == ENOENT || 5660 error == EINVAL); 5661 } 5662 } 5663 5664 /* 5665 * If we got any ENOSPC errors on the previous run, destroy something. 5666 */ 5667 if (zs->zs_enospc_count != 0) { 5668 int d = ztest_random(ztest_opts.zo_datasets); 5669 ztest_dataset_destroy(d); 5670 } 5671 zs->zs_enospc_count = 0; 5672 5673 tid = umem_zalloc(ztest_opts.zo_threads * sizeof (thread_t), 5674 UMEM_NOFAIL); 5675 5676 if (ztest_opts.zo_verbose >= 4) 5677 (void) printf("starting main threads...\n"); 5678 5679 /* 5680 * Kick off all the tests that run in parallel. 5681 */ 5682 for (int t = 0; t < ztest_opts.zo_threads; t++) { 5683 if (t < ztest_opts.zo_datasets && 5684 ztest_dataset_open(t) != 0) 5685 return; 5686 VERIFY(thr_create(0, 0, ztest_thread, (void *)(uintptr_t)t, 5687 THR_BOUND, &tid[t]) == 0); 5688 } 5689 5690 /* 5691 * Wait for all of the tests to complete. We go in reverse order 5692 * so we don't close datasets while threads are still using them. 5693 */ 5694 for (int t = ztest_opts.zo_threads - 1; t >= 0; t--) { 5695 VERIFY(thr_join(tid[t], NULL, NULL) == 0); 5696 if (t < ztest_opts.zo_datasets) 5697 ztest_dataset_close(t); 5698 } 5699 5700 txg_wait_synced(spa_get_dsl(spa), 0); 5701 5702 zs->zs_alloc = metaslab_class_get_alloc(spa_normal_class(spa)); 5703 zs->zs_space = metaslab_class_get_space(spa_normal_class(spa)); 5704 zfs_dbgmsg_print(FTAG); 5705 5706 umem_free(tid, ztest_opts.zo_threads * sizeof (thread_t)); 5707 5708 /* Kill the resume thread */ 5709 ztest_exiting = B_TRUE; 5710 VERIFY(thr_join(resume_tid, NULL, NULL) == 0); 5711 ztest_resume(spa); 5712 5713 /* 5714 * Right before closing the pool, kick off a bunch of async I/O; 5715 * spa_close() should wait for it to complete. 5716 */ 5717 for (uint64_t object = 1; object < 50; object++) { 5718 dmu_prefetch(spa->spa_meta_objset, object, 0, 0, 1ULL << 20, 5719 ZIO_PRIORITY_SYNC_READ); 5720 } 5721 5722 spa_close(spa, FTAG); 5723 5724 /* 5725 * Verify that we can loop over all pools. 5726 */ 5727 mutex_enter(&spa_namespace_lock); 5728 for (spa = spa_next(NULL); spa != NULL; spa = spa_next(spa)) 5729 if (ztest_opts.zo_verbose > 3) 5730 (void) printf("spa_next: found %s\n", spa_name(spa)); 5731 mutex_exit(&spa_namespace_lock); 5732 5733 /* 5734 * Verify that we can export the pool and reimport it under a 5735 * different name. 5736 */ 5737 if (ztest_random(2) == 0) { 5738 char name[ZFS_MAX_DATASET_NAME_LEN]; 5739 (void) snprintf(name, sizeof (name), "%s_import", 5740 ztest_opts.zo_pool); 5741 ztest_spa_import_export(ztest_opts.zo_pool, name); 5742 ztest_spa_import_export(name, ztest_opts.zo_pool); 5743 } 5744 5745 kernel_fini(); 5746 5747 list_destroy(&zcl.zcl_callbacks); 5748 5749 (void) _mutex_destroy(&zcl.zcl_callbacks_lock); 5750 5751 (void) rwlock_destroy(&ztest_name_lock); 5752 (void) _mutex_destroy(&ztest_vdev_lock); 5753 } 5754 5755 static void 5756 ztest_freeze(void) 5757 { 5758 ztest_ds_t *zd = &ztest_ds[0]; 5759 spa_t *spa; 5760 int numloops = 0; 5761 5762 if (ztest_opts.zo_verbose >= 3) 5763 (void) printf("testing spa_freeze()...\n"); 5764 5765 kernel_init(FREAD | FWRITE); 5766 VERIFY3U(0, ==, spa_open(ztest_opts.zo_pool, &spa, FTAG)); 5767 VERIFY3U(0, ==, ztest_dataset_open(0)); 5768 spa->spa_debug = B_TRUE; 5769 ztest_spa = spa; 5770 5771 /* 5772 * Force the first log block to be transactionally allocated. 5773 * We have to do this before we freeze the pool -- otherwise 5774 * the log chain won't be anchored. 5775 */ 5776 while (BP_IS_HOLE(&zd->zd_zilog->zl_header->zh_log)) { 5777 ztest_dmu_object_alloc_free(zd, 0); 5778 zil_commit(zd->zd_zilog, 0); 5779 } 5780 5781 txg_wait_synced(spa_get_dsl(spa), 0); 5782 5783 /* 5784 * Freeze the pool. This stops spa_sync() from doing anything, 5785 * so that the only way to record changes from now on is the ZIL. 5786 */ 5787 spa_freeze(spa); 5788 5789 /* 5790 * Because it is hard to predict how much space a write will actually 5791 * require beforehand, we leave ourselves some fudge space to write over 5792 * capacity. 5793 */ 5794 uint64_t capacity = metaslab_class_get_space(spa_normal_class(spa)) / 2; 5795 5796 /* 5797 * Run tests that generate log records but don't alter the pool config 5798 * or depend on DSL sync tasks (snapshots, objset create/destroy, etc). 5799 * We do a txg_wait_synced() after each iteration to force the txg 5800 * to increase well beyond the last synced value in the uberblock. 5801 * The ZIL should be OK with that. 5802 * 5803 * Run a random number of times less than zo_maxloops and ensure we do 5804 * not run out of space on the pool. 5805 */ 5806 while (ztest_random(10) != 0 && 5807 numloops++ < ztest_opts.zo_maxloops && 5808 metaslab_class_get_alloc(spa_normal_class(spa)) < capacity) { 5809 ztest_od_t od; 5810 ztest_od_init(&od, 0, FTAG, 0, DMU_OT_UINT64_OTHER, 0, 0); 5811 VERIFY0(ztest_object_init(zd, &od, sizeof (od), B_FALSE)); 5812 ztest_io(zd, od.od_object, 5813 ztest_random(ZTEST_RANGE_LOCKS) << SPA_MAXBLOCKSHIFT); 5814 txg_wait_synced(spa_get_dsl(spa), 0); 5815 } 5816 5817 /* 5818 * Commit all of the changes we just generated. 5819 */ 5820 zil_commit(zd->zd_zilog, 0); 5821 txg_wait_synced(spa_get_dsl(spa), 0); 5822 5823 /* 5824 * Close our dataset and close the pool. 5825 */ 5826 ztest_dataset_close(0); 5827 spa_close(spa, FTAG); 5828 kernel_fini(); 5829 5830 /* 5831 * Open and close the pool and dataset to induce log replay. 5832 */ 5833 kernel_init(FREAD | FWRITE); 5834 VERIFY3U(0, ==, spa_open(ztest_opts.zo_pool, &spa, FTAG)); 5835 ASSERT(spa_freeze_txg(spa) == UINT64_MAX); 5836 VERIFY3U(0, ==, ztest_dataset_open(0)); 5837 ztest_dataset_close(0); 5838 5839 spa->spa_debug = B_TRUE; 5840 ztest_spa = spa; 5841 txg_wait_synced(spa_get_dsl(spa), 0); 5842 ztest_reguid(NULL, 0); 5843 5844 spa_close(spa, FTAG); 5845 kernel_fini(); 5846 } 5847 5848 void 5849 print_time(hrtime_t t, char *timebuf) 5850 { 5851 hrtime_t s = t / NANOSEC; 5852 hrtime_t m = s / 60; 5853 hrtime_t h = m / 60; 5854 hrtime_t d = h / 24; 5855 5856 s -= m * 60; 5857 m -= h * 60; 5858 h -= d * 24; 5859 5860 timebuf[0] = '\0'; 5861 5862 if (d) 5863 (void) sprintf(timebuf, 5864 "%llud%02lluh%02llum%02llus", d, h, m, s); 5865 else if (h) 5866 (void) sprintf(timebuf, "%lluh%02llum%02llus", h, m, s); 5867 else if (m) 5868 (void) sprintf(timebuf, "%llum%02llus", m, s); 5869 else 5870 (void) sprintf(timebuf, "%llus", s); 5871 } 5872 5873 static nvlist_t * 5874 make_random_props() 5875 { 5876 nvlist_t *props; 5877 5878 VERIFY(nvlist_alloc(&props, NV_UNIQUE_NAME, 0) == 0); 5879 if (ztest_random(2) == 0) 5880 return (props); 5881 VERIFY(nvlist_add_uint64(props, "autoreplace", 1) == 0); 5882 5883 return (props); 5884 } 5885 5886 /* 5887 * Create a storage pool with the given name and initial vdev size. 5888 * Then test spa_freeze() functionality. 5889 */ 5890 static void 5891 ztest_init(ztest_shared_t *zs) 5892 { 5893 spa_t *spa; 5894 nvlist_t *nvroot, *props; 5895 5896 VERIFY(_mutex_init(&ztest_vdev_lock, USYNC_THREAD, NULL) == 0); 5897 VERIFY(rwlock_init(&ztest_name_lock, USYNC_THREAD, NULL) == 0); 5898 5899 kernel_init(FREAD | FWRITE); 5900 5901 /* 5902 * Create the storage pool. 5903 */ 5904 (void) spa_destroy(ztest_opts.zo_pool); 5905 ztest_shared->zs_vdev_next_leaf = 0; 5906 zs->zs_splits = 0; 5907 zs->zs_mirrors = ztest_opts.zo_mirrors; 5908 nvroot = make_vdev_root(NULL, NULL, NULL, ztest_opts.zo_vdev_size, 0, 5909 0, ztest_opts.zo_raidz, zs->zs_mirrors, 1); 5910 props = make_random_props(); 5911 for (int i = 0; i < SPA_FEATURES; i++) { 5912 char buf[1024]; 5913 (void) snprintf(buf, sizeof (buf), "feature@%s", 5914 spa_feature_table[i].fi_uname); 5915 VERIFY3U(0, ==, nvlist_add_uint64(props, buf, 0)); 5916 } 5917 VERIFY3U(0, ==, spa_create(ztest_opts.zo_pool, nvroot, props, NULL)); 5918 nvlist_free(nvroot); 5919 5920 VERIFY3U(0, ==, spa_open(ztest_opts.zo_pool, &spa, FTAG)); 5921 zs->zs_metaslab_sz = 5922 1ULL << spa->spa_root_vdev->vdev_child[0]->vdev_ms_shift; 5923 5924 spa_close(spa, FTAG); 5925 5926 kernel_fini(); 5927 5928 ztest_run_zdb(ztest_opts.zo_pool); 5929 5930 ztest_freeze(); 5931 5932 ztest_run_zdb(ztest_opts.zo_pool); 5933 5934 (void) rwlock_destroy(&ztest_name_lock); 5935 (void) _mutex_destroy(&ztest_vdev_lock); 5936 } 5937 5938 static void 5939 setup_data_fd(void) 5940 { 5941 static char ztest_name_data[] = "/tmp/ztest.data.XXXXXX"; 5942 5943 ztest_fd_data = mkstemp(ztest_name_data); 5944 ASSERT3S(ztest_fd_data, >=, 0); 5945 (void) unlink(ztest_name_data); 5946 } 5947 5948 5949 static int 5950 shared_data_size(ztest_shared_hdr_t *hdr) 5951 { 5952 int size; 5953 5954 size = hdr->zh_hdr_size; 5955 size += hdr->zh_opts_size; 5956 size += hdr->zh_size; 5957 size += hdr->zh_stats_size * hdr->zh_stats_count; 5958 size += hdr->zh_ds_size * hdr->zh_ds_count; 5959 5960 return (size); 5961 } 5962 5963 static void 5964 setup_hdr(void) 5965 { 5966 int size; 5967 ztest_shared_hdr_t *hdr; 5968 5969 hdr = (void *)mmap(0, P2ROUNDUP(sizeof (*hdr), getpagesize()), 5970 PROT_READ | PROT_WRITE, MAP_SHARED, ztest_fd_data, 0); 5971 ASSERT(hdr != MAP_FAILED); 5972 5973 VERIFY3U(0, ==, ftruncate(ztest_fd_data, sizeof (ztest_shared_hdr_t))); 5974 5975 hdr->zh_hdr_size = sizeof (ztest_shared_hdr_t); 5976 hdr->zh_opts_size = sizeof (ztest_shared_opts_t); 5977 hdr->zh_size = sizeof (ztest_shared_t); 5978 hdr->zh_stats_size = sizeof (ztest_shared_callstate_t); 5979 hdr->zh_stats_count = ZTEST_FUNCS; 5980 hdr->zh_ds_size = sizeof (ztest_shared_ds_t); 5981 hdr->zh_ds_count = ztest_opts.zo_datasets; 5982 5983 size = shared_data_size(hdr); 5984 VERIFY3U(0, ==, ftruncate(ztest_fd_data, size)); 5985 5986 (void) munmap((caddr_t)hdr, P2ROUNDUP(sizeof (*hdr), getpagesize())); 5987 } 5988 5989 static void 5990 setup_data(void) 5991 { 5992 int size, offset; 5993 ztest_shared_hdr_t *hdr; 5994 uint8_t *buf; 5995 5996 hdr = (void *)mmap(0, P2ROUNDUP(sizeof (*hdr), getpagesize()), 5997 PROT_READ, MAP_SHARED, ztest_fd_data, 0); 5998 ASSERT(hdr != MAP_FAILED); 5999 6000 size = shared_data_size(hdr); 6001 6002 (void) munmap((caddr_t)hdr, P2ROUNDUP(sizeof (*hdr), getpagesize())); 6003 hdr = ztest_shared_hdr = (void *)mmap(0, P2ROUNDUP(size, getpagesize()), 6004 PROT_READ | PROT_WRITE, MAP_SHARED, ztest_fd_data, 0); 6005 ASSERT(hdr != MAP_FAILED); 6006 buf = (uint8_t *)hdr; 6007 6008 offset = hdr->zh_hdr_size; 6009 ztest_shared_opts = (void *)&buf[offset]; 6010 offset += hdr->zh_opts_size; 6011 ztest_shared = (void *)&buf[offset]; 6012 offset += hdr->zh_size; 6013 ztest_shared_callstate = (void *)&buf[offset]; 6014 offset += hdr->zh_stats_size * hdr->zh_stats_count; 6015 ztest_shared_ds = (void *)&buf[offset]; 6016 } 6017 6018 static boolean_t 6019 exec_child(char *cmd, char *libpath, boolean_t ignorekill, int *statusp) 6020 { 6021 pid_t pid; 6022 int status; 6023 char *cmdbuf = NULL; 6024 6025 pid = fork(); 6026 6027 if (cmd == NULL) { 6028 cmdbuf = umem_alloc(MAXPATHLEN, UMEM_NOFAIL); 6029 (void) strlcpy(cmdbuf, getexecname(), MAXPATHLEN); 6030 cmd = cmdbuf; 6031 } 6032 6033 if (pid == -1) 6034 fatal(1, "fork failed"); 6035 6036 if (pid == 0) { /* child */ 6037 char *emptyargv[2] = { cmd, NULL }; 6038 char fd_data_str[12]; 6039 6040 struct rlimit rl = { 1024, 1024 }; 6041 (void) setrlimit(RLIMIT_NOFILE, &rl); 6042 6043 (void) close(ztest_fd_rand); 6044 VERIFY3U(11, >=, 6045 snprintf(fd_data_str, 12, "%d", ztest_fd_data)); 6046 VERIFY0(setenv("ZTEST_FD_DATA", fd_data_str, 1)); 6047 6048 (void) enable_extended_FILE_stdio(-1, -1); 6049 if (libpath != NULL) 6050 VERIFY(0 == setenv("LD_LIBRARY_PATH", libpath, 1)); 6051 (void) execv(cmd, emptyargv); 6052 ztest_dump_core = B_FALSE; 6053 fatal(B_TRUE, "exec failed: %s", cmd); 6054 } 6055 6056 if (cmdbuf != NULL) { 6057 umem_free(cmdbuf, MAXPATHLEN); 6058 cmd = NULL; 6059 } 6060 6061 while (waitpid(pid, &status, 0) != pid) 6062 continue; 6063 if (statusp != NULL) 6064 *statusp = status; 6065 6066 if (WIFEXITED(status)) { 6067 if (WEXITSTATUS(status) != 0) { 6068 (void) fprintf(stderr, "child exited with code %d\n", 6069 WEXITSTATUS(status)); 6070 exit(2); 6071 } 6072 return (B_FALSE); 6073 } else if (WIFSIGNALED(status)) { 6074 if (!ignorekill || WTERMSIG(status) != SIGKILL) { 6075 (void) fprintf(stderr, "child died with signal %d\n", 6076 WTERMSIG(status)); 6077 exit(3); 6078 } 6079 return (B_TRUE); 6080 } else { 6081 (void) fprintf(stderr, "something strange happened to child\n"); 6082 exit(4); 6083 /* NOTREACHED */ 6084 } 6085 } 6086 6087 static void 6088 ztest_run_init(void) 6089 { 6090 ztest_shared_t *zs = ztest_shared; 6091 6092 ASSERT(ztest_opts.zo_init != 0); 6093 6094 /* 6095 * Blow away any existing copy of zpool.cache 6096 */ 6097 (void) remove(spa_config_path); 6098 6099 /* 6100 * Create and initialize our storage pool. 6101 */ 6102 for (int i = 1; i <= ztest_opts.zo_init; i++) { 6103 bzero(zs, sizeof (ztest_shared_t)); 6104 if (ztest_opts.zo_verbose >= 3 && 6105 ztest_opts.zo_init != 1) { 6106 (void) printf("ztest_init(), pass %d\n", i); 6107 } 6108 ztest_init(zs); 6109 } 6110 } 6111 6112 int 6113 main(int argc, char **argv) 6114 { 6115 int kills = 0; 6116 int iters = 0; 6117 int older = 0; 6118 int newer = 0; 6119 ztest_shared_t *zs; 6120 ztest_info_t *zi; 6121 ztest_shared_callstate_t *zc; 6122 char timebuf[100]; 6123 char numbuf[6]; 6124 spa_t *spa; 6125 char *cmd; 6126 boolean_t hasalt; 6127 char *fd_data_str = getenv("ZTEST_FD_DATA"); 6128 6129 (void) setvbuf(stdout, NULL, _IOLBF, 0); 6130 6131 dprintf_setup(&argc, argv); 6132 zfs_deadman_synctime_ms = 300000; 6133 6134 ztest_fd_rand = open("/dev/urandom", O_RDONLY); 6135 ASSERT3S(ztest_fd_rand, >=, 0); 6136 6137 if (!fd_data_str) { 6138 process_options(argc, argv); 6139 6140 setup_data_fd(); 6141 setup_hdr(); 6142 setup_data(); 6143 bcopy(&ztest_opts, ztest_shared_opts, 6144 sizeof (*ztest_shared_opts)); 6145 } else { 6146 ztest_fd_data = atoi(fd_data_str); 6147 setup_data(); 6148 bcopy(ztest_shared_opts, &ztest_opts, sizeof (ztest_opts)); 6149 } 6150 ASSERT3U(ztest_opts.zo_datasets, ==, ztest_shared_hdr->zh_ds_count); 6151 6152 /* Override location of zpool.cache */ 6153 VERIFY3U(asprintf((char **)&spa_config_path, "%s/zpool.cache", 6154 ztest_opts.zo_dir), !=, -1); 6155 6156 ztest_ds = umem_alloc(ztest_opts.zo_datasets * sizeof (ztest_ds_t), 6157 UMEM_NOFAIL); 6158 zs = ztest_shared; 6159 6160 if (fd_data_str) { 6161 metaslab_gang_bang = ztest_opts.zo_metaslab_gang_bang; 6162 metaslab_df_alloc_threshold = 6163 zs->zs_metaslab_df_alloc_threshold; 6164 6165 if (zs->zs_do_init) 6166 ztest_run_init(); 6167 else 6168 ztest_run(zs); 6169 exit(0); 6170 } 6171 6172 hasalt = (strlen(ztest_opts.zo_alt_ztest) != 0); 6173 6174 if (ztest_opts.zo_verbose >= 1) { 6175 (void) printf("%llu vdevs, %d datasets, %d threads," 6176 " %llu seconds...\n", 6177 (u_longlong_t)ztest_opts.zo_vdevs, 6178 ztest_opts.zo_datasets, 6179 ztest_opts.zo_threads, 6180 (u_longlong_t)ztest_opts.zo_time); 6181 } 6182 6183 cmd = umem_alloc(MAXNAMELEN, UMEM_NOFAIL); 6184 (void) strlcpy(cmd, getexecname(), MAXNAMELEN); 6185 6186 zs->zs_do_init = B_TRUE; 6187 if (strlen(ztest_opts.zo_alt_ztest) != 0) { 6188 if (ztest_opts.zo_verbose >= 1) { 6189 (void) printf("Executing older ztest for " 6190 "initialization: %s\n", ztest_opts.zo_alt_ztest); 6191 } 6192 VERIFY(!exec_child(ztest_opts.zo_alt_ztest, 6193 ztest_opts.zo_alt_libpath, B_FALSE, NULL)); 6194 } else { 6195 VERIFY(!exec_child(NULL, NULL, B_FALSE, NULL)); 6196 } 6197 zs->zs_do_init = B_FALSE; 6198 6199 zs->zs_proc_start = gethrtime(); 6200 zs->zs_proc_stop = zs->zs_proc_start + ztest_opts.zo_time * NANOSEC; 6201 6202 for (int f = 0; f < ZTEST_FUNCS; f++) { 6203 zi = &ztest_info[f]; 6204 zc = ZTEST_GET_SHARED_CALLSTATE(f); 6205 if (zs->zs_proc_start + zi->zi_interval[0] > zs->zs_proc_stop) 6206 zc->zc_next = UINT64_MAX; 6207 else 6208 zc->zc_next = zs->zs_proc_start + 6209 ztest_random(2 * zi->zi_interval[0] + 1); 6210 } 6211 6212 /* 6213 * Run the tests in a loop. These tests include fault injection 6214 * to verify that self-healing data works, and forced crashes 6215 * to verify that we never lose on-disk consistency. 6216 */ 6217 while (gethrtime() < zs->zs_proc_stop) { 6218 int status; 6219 boolean_t killed; 6220 6221 /* 6222 * Initialize the workload counters for each function. 6223 */ 6224 for (int f = 0; f < ZTEST_FUNCS; f++) { 6225 zc = ZTEST_GET_SHARED_CALLSTATE(f); 6226 zc->zc_count = 0; 6227 zc->zc_time = 0; 6228 } 6229 6230 /* Set the allocation switch size */ 6231 zs->zs_metaslab_df_alloc_threshold = 6232 ztest_random(zs->zs_metaslab_sz / 4) + 1; 6233 6234 if (!hasalt || ztest_random(2) == 0) { 6235 if (hasalt && ztest_opts.zo_verbose >= 1) { 6236 (void) printf("Executing newer ztest: %s\n", 6237 cmd); 6238 } 6239 newer++; 6240 killed = exec_child(cmd, NULL, B_TRUE, &status); 6241 } else { 6242 if (hasalt && ztest_opts.zo_verbose >= 1) { 6243 (void) printf("Executing older ztest: %s\n", 6244 ztest_opts.zo_alt_ztest); 6245 } 6246 older++; 6247 killed = exec_child(ztest_opts.zo_alt_ztest, 6248 ztest_opts.zo_alt_libpath, B_TRUE, &status); 6249 } 6250 6251 if (killed) 6252 kills++; 6253 iters++; 6254 6255 if (ztest_opts.zo_verbose >= 1) { 6256 hrtime_t now = gethrtime(); 6257 6258 now = MIN(now, zs->zs_proc_stop); 6259 print_time(zs->zs_proc_stop - now, timebuf); 6260 nicenum(zs->zs_space, numbuf); 6261 6262 (void) printf("Pass %3d, %8s, %3llu ENOSPC, " 6263 "%4.1f%% of %5s used, %3.0f%% done, %8s to go\n", 6264 iters, 6265 WIFEXITED(status) ? "Complete" : "SIGKILL", 6266 (u_longlong_t)zs->zs_enospc_count, 6267 100.0 * zs->zs_alloc / zs->zs_space, 6268 numbuf, 6269 100.0 * (now - zs->zs_proc_start) / 6270 (ztest_opts.zo_time * NANOSEC), timebuf); 6271 } 6272 6273 if (ztest_opts.zo_verbose >= 2) { 6274 (void) printf("\nWorkload summary:\n\n"); 6275 (void) printf("%7s %9s %s\n", 6276 "Calls", "Time", "Function"); 6277 (void) printf("%7s %9s %s\n", 6278 "-----", "----", "--------"); 6279 for (int f = 0; f < ZTEST_FUNCS; f++) { 6280 Dl_info dli; 6281 6282 zi = &ztest_info[f]; 6283 zc = ZTEST_GET_SHARED_CALLSTATE(f); 6284 print_time(zc->zc_time, timebuf); 6285 (void) dladdr((void *)zi->zi_func, &dli); 6286 (void) printf("%7llu %9s %s\n", 6287 (u_longlong_t)zc->zc_count, timebuf, 6288 dli.dli_sname); 6289 } 6290 (void) printf("\n"); 6291 } 6292 6293 /* 6294 * It's possible that we killed a child during a rename test, 6295 * in which case we'll have a 'ztest_tmp' pool lying around 6296 * instead of 'ztest'. Do a blind rename in case this happened. 6297 */ 6298 kernel_init(FREAD); 6299 if (spa_open(ztest_opts.zo_pool, &spa, FTAG) == 0) { 6300 spa_close(spa, FTAG); 6301 } else { 6302 char tmpname[ZFS_MAX_DATASET_NAME_LEN]; 6303 kernel_fini(); 6304 kernel_init(FREAD | FWRITE); 6305 (void) snprintf(tmpname, sizeof (tmpname), "%s_tmp", 6306 ztest_opts.zo_pool); 6307 (void) spa_rename(tmpname, ztest_opts.zo_pool); 6308 } 6309 kernel_fini(); 6310 6311 ztest_run_zdb(ztest_opts.zo_pool); 6312 } 6313 6314 if (ztest_opts.zo_verbose >= 1) { 6315 if (hasalt) { 6316 (void) printf("%d runs of older ztest: %s\n", older, 6317 ztest_opts.zo_alt_ztest); 6318 (void) printf("%d runs of newer ztest: %s\n", newer, 6319 cmd); 6320 } 6321 (void) printf("%d killed, %d completed, %.0f%% kill rate\n", 6322 kills, iters - kills, (100.0 * kills) / MAX(1, iters)); 6323 } 6324 6325 umem_free(cmd, MAXNAMELEN); 6326 6327 return (0); 6328 } 6329