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 * Copyright (c) 2014 Integros [integros.com] 27 * Copyright 2017 Joyent, Inc. 28 */ 29 30 /* 31 * The objective of this program is to provide a DMU/ZAP/SPA stress test 32 * that runs entirely in userland, is easy to use, and easy to extend. 33 * 34 * The overall design of the ztest program is as follows: 35 * 36 * (1) For each major functional area (e.g. adding vdevs to a pool, 37 * creating and destroying datasets, reading and writing objects, etc) 38 * we have a simple routine to test that functionality. These 39 * individual routines do not have to do anything "stressful". 40 * 41 * (2) We turn these simple functionality tests into a stress test by 42 * running them all in parallel, with as many threads as desired, 43 * and spread across as many datasets, objects, and vdevs as desired. 44 * 45 * (3) While all this is happening, we inject faults into the pool to 46 * verify that self-healing data really works. 47 * 48 * (4) Every time we open a dataset, we change its checksum and compression 49 * functions. Thus even individual objects vary from block to block 50 * in which checksum they use and whether they're compressed. 51 * 52 * (5) To verify that we never lose on-disk consistency after a crash, 53 * we run the entire test in a child of the main process. 54 * At random times, the child self-immolates with a SIGKILL. 55 * This is the software equivalent of pulling the power cord. 56 * The parent then runs the test again, using the existing 57 * storage pool, as many times as desired. If backwards compatibility 58 * testing is enabled ztest will sometimes run the "older" version 59 * of ztest after a SIGKILL. 60 * 61 * (6) To verify that we don't have future leaks or temporal incursions, 62 * many of the functional tests record the transaction group number 63 * as part of their data. When reading old data, they verify that 64 * the transaction group number is less than the current, open txg. 65 * If you add a new test, please do this if applicable. 66 * 67 * When run with no arguments, ztest runs for about five minutes and 68 * produces no output if successful. To get a little bit of information, 69 * specify -V. To get more information, specify -VV, and so on. 70 * 71 * To turn this into an overnight stress test, use -T to specify run time. 72 * 73 * You can ask more more vdevs [-v], datasets [-d], or threads [-t] 74 * to increase the pool capacity, fanout, and overall stress level. 75 * 76 * Use the -k option to set the desired frequency of kills. 77 * 78 * When ztest invokes itself it passes all relevant information through a 79 * temporary file which is mmap-ed in the child process. This allows shared 80 * memory to survive the exec syscall. The ztest_shared_hdr_t struct is always 81 * stored at offset 0 of this file and contains information on the size and 82 * number of shared structures in the file. The information stored in this file 83 * must remain backwards compatible with older versions of ztest so that 84 * ztest can invoke them during backwards compatibility testing (-B). 85 */ 86 87 #include <sys/zfs_context.h> 88 #include <sys/spa.h> 89 #include <sys/dmu.h> 90 #include <sys/txg.h> 91 #include <sys/dbuf.h> 92 #include <sys/zap.h> 93 #include <sys/dmu_objset.h> 94 #include <sys/poll.h> 95 #include <sys/stat.h> 96 #include <sys/time.h> 97 #include <sys/wait.h> 98 #include <sys/mman.h> 99 #include <sys/resource.h> 100 #include <sys/zio.h> 101 #include <sys/zil.h> 102 #include <sys/zil_impl.h> 103 #include <sys/vdev_impl.h> 104 #include <sys/vdev_file.h> 105 #include <sys/spa_impl.h> 106 #include <sys/metaslab_impl.h> 107 #include <sys/dsl_prop.h> 108 #include <sys/dsl_dataset.h> 109 #include <sys/dsl_destroy.h> 110 #include <sys/dsl_scan.h> 111 #include <sys/zio_checksum.h> 112 #include <sys/refcount.h> 113 #include <sys/zfeature.h> 114 #include <sys/dsl_userhold.h> 115 #include <sys/abd.h> 116 #include <stdio.h> 117 #include <stdio_ext.h> 118 #include <stdlib.h> 119 #include <unistd.h> 120 #include <signal.h> 121 #include <umem.h> 122 #include <dlfcn.h> 123 #include <ctype.h> 124 #include <math.h> 125 #include <sys/fs/zfs.h> 126 #include <libnvpair.h> 127 #include <libcmdutils.h> 128 129 static int ztest_fd_data = -1; 130 static int ztest_fd_rand = -1; 131 132 typedef struct ztest_shared_hdr { 133 uint64_t zh_hdr_size; 134 uint64_t zh_opts_size; 135 uint64_t zh_size; 136 uint64_t zh_stats_size; 137 uint64_t zh_stats_count; 138 uint64_t zh_ds_size; 139 uint64_t zh_ds_count; 140 } ztest_shared_hdr_t; 141 142 static ztest_shared_hdr_t *ztest_shared_hdr; 143 144 typedef struct ztest_shared_opts { 145 char zo_pool[ZFS_MAX_DATASET_NAME_LEN]; 146 char zo_dir[ZFS_MAX_DATASET_NAME_LEN]; 147 char zo_alt_ztest[MAXNAMELEN]; 148 char zo_alt_libpath[MAXNAMELEN]; 149 uint64_t zo_vdevs; 150 uint64_t zo_vdevtime; 151 size_t zo_vdev_size; 152 int zo_ashift; 153 int zo_mirrors; 154 int zo_raidz; 155 int zo_raidz_parity; 156 int zo_datasets; 157 int zo_threads; 158 uint64_t zo_passtime; 159 uint64_t zo_killrate; 160 int zo_verbose; 161 int zo_init; 162 uint64_t zo_time; 163 uint64_t zo_maxloops; 164 uint64_t zo_metaslab_gang_bang; 165 } ztest_shared_opts_t; 166 167 static const ztest_shared_opts_t ztest_opts_defaults = { 168 .zo_pool = { 'z', 't', 'e', 's', 't', '\0' }, 169 .zo_dir = { '/', 't', 'm', 'p', '\0' }, 170 .zo_alt_ztest = { '\0' }, 171 .zo_alt_libpath = { '\0' }, 172 .zo_vdevs = 5, 173 .zo_ashift = SPA_MINBLOCKSHIFT, 174 .zo_mirrors = 2, 175 .zo_raidz = 4, 176 .zo_raidz_parity = 1, 177 .zo_vdev_size = SPA_MINDEVSIZE * 4, /* 256m default size */ 178 .zo_datasets = 7, 179 .zo_threads = 23, 180 .zo_passtime = 60, /* 60 seconds */ 181 .zo_killrate = 70, /* 70% kill rate */ 182 .zo_verbose = 0, 183 .zo_init = 1, 184 .zo_time = 300, /* 5 minutes */ 185 .zo_maxloops = 50, /* max loops during spa_freeze() */ 186 .zo_metaslab_gang_bang = 32 << 10 187 }; 188 189 extern uint64_t metaslab_gang_bang; 190 extern uint64_t metaslab_df_alloc_threshold; 191 extern uint64_t zfs_deadman_synctime_ms; 192 extern int metaslab_preload_limit; 193 extern boolean_t zfs_compressed_arc_enabled; 194 extern boolean_t zfs_abd_scatter_enabled; 195 196 static ztest_shared_opts_t *ztest_shared_opts; 197 static ztest_shared_opts_t ztest_opts; 198 199 typedef struct ztest_shared_ds { 200 uint64_t zd_seq; 201 } ztest_shared_ds_t; 202 203 static ztest_shared_ds_t *ztest_shared_ds; 204 #define ZTEST_GET_SHARED_DS(d) (&ztest_shared_ds[d]) 205 206 #define BT_MAGIC 0x123456789abcdefULL 207 #define MAXFAULTS() \ 208 (MAX(zs->zs_mirrors, 1) * (ztest_opts.zo_raidz_parity + 1) - 1) 209 210 enum ztest_io_type { 211 ZTEST_IO_WRITE_TAG, 212 ZTEST_IO_WRITE_PATTERN, 213 ZTEST_IO_WRITE_ZEROES, 214 ZTEST_IO_TRUNCATE, 215 ZTEST_IO_SETATTR, 216 ZTEST_IO_REWRITE, 217 ZTEST_IO_TYPES 218 }; 219 220 typedef struct ztest_block_tag { 221 uint64_t bt_magic; 222 uint64_t bt_objset; 223 uint64_t bt_object; 224 uint64_t bt_offset; 225 uint64_t bt_gen; 226 uint64_t bt_txg; 227 uint64_t bt_crtxg; 228 } ztest_block_tag_t; 229 230 typedef struct bufwad { 231 uint64_t bw_index; 232 uint64_t bw_txg; 233 uint64_t bw_data; 234 } bufwad_t; 235 236 /* 237 * XXX -- fix zfs range locks to be generic so we can use them here. 238 */ 239 typedef enum { 240 RL_READER, 241 RL_WRITER, 242 RL_APPEND 243 } rl_type_t; 244 245 typedef struct rll { 246 void *rll_writer; 247 int rll_readers; 248 mutex_t rll_lock; 249 cond_t rll_cv; 250 } rll_t; 251 252 typedef struct rl { 253 uint64_t rl_object; 254 uint64_t rl_offset; 255 uint64_t rl_size; 256 rll_t *rl_lock; 257 } rl_t; 258 259 #define ZTEST_RANGE_LOCKS 64 260 #define ZTEST_OBJECT_LOCKS 64 261 262 /* 263 * Object descriptor. Used as a template for object lookup/create/remove. 264 */ 265 typedef struct ztest_od { 266 uint64_t od_dir; 267 uint64_t od_object; 268 dmu_object_type_t od_type; 269 dmu_object_type_t od_crtype; 270 uint64_t od_blocksize; 271 uint64_t od_crblocksize; 272 uint64_t od_gen; 273 uint64_t od_crgen; 274 char od_name[ZFS_MAX_DATASET_NAME_LEN]; 275 } ztest_od_t; 276 277 /* 278 * Per-dataset state. 279 */ 280 typedef struct ztest_ds { 281 ztest_shared_ds_t *zd_shared; 282 objset_t *zd_os; 283 rwlock_t zd_zilog_lock; 284 zilog_t *zd_zilog; 285 ztest_od_t *zd_od; /* debugging aid */ 286 char zd_name[ZFS_MAX_DATASET_NAME_LEN]; 287 mutex_t zd_dirobj_lock; 288 rll_t zd_object_lock[ZTEST_OBJECT_LOCKS]; 289 rll_t zd_range_lock[ZTEST_RANGE_LOCKS]; 290 } ztest_ds_t; 291 292 /* 293 * Per-iteration state. 294 */ 295 typedef void ztest_func_t(ztest_ds_t *zd, uint64_t id); 296 297 typedef struct ztest_info { 298 ztest_func_t *zi_func; /* test function */ 299 uint64_t zi_iters; /* iterations per execution */ 300 uint64_t *zi_interval; /* execute every <interval> seconds */ 301 } ztest_info_t; 302 303 typedef struct ztest_shared_callstate { 304 uint64_t zc_count; /* per-pass count */ 305 uint64_t zc_time; /* per-pass time */ 306 uint64_t zc_next; /* next time to call this function */ 307 } ztest_shared_callstate_t; 308 309 static ztest_shared_callstate_t *ztest_shared_callstate; 310 #define ZTEST_GET_SHARED_CALLSTATE(c) (&ztest_shared_callstate[c]) 311 312 /* 313 * Note: these aren't static because we want dladdr() to work. 314 */ 315 ztest_func_t ztest_dmu_read_write; 316 ztest_func_t ztest_dmu_write_parallel; 317 ztest_func_t ztest_dmu_object_alloc_free; 318 ztest_func_t ztest_dmu_commit_callbacks; 319 ztest_func_t ztest_zap; 320 ztest_func_t ztest_zap_parallel; 321 ztest_func_t ztest_zil_commit; 322 ztest_func_t ztest_zil_remount; 323 ztest_func_t ztest_dmu_read_write_zcopy; 324 ztest_func_t ztest_dmu_objset_create_destroy; 325 ztest_func_t ztest_dmu_prealloc; 326 ztest_func_t ztest_fzap; 327 ztest_func_t ztest_dmu_snapshot_create_destroy; 328 ztest_func_t ztest_dsl_prop_get_set; 329 ztest_func_t ztest_spa_prop_get_set; 330 ztest_func_t ztest_spa_create_destroy; 331 ztest_func_t ztest_fault_inject; 332 ztest_func_t ztest_ddt_repair; 333 ztest_func_t ztest_dmu_snapshot_hold; 334 ztest_func_t ztest_spa_rename; 335 ztest_func_t ztest_scrub; 336 ztest_func_t ztest_dsl_dataset_promote_busy; 337 ztest_func_t ztest_vdev_attach_detach; 338 ztest_func_t ztest_vdev_LUN_growth; 339 ztest_func_t ztest_vdev_add_remove; 340 ztest_func_t ztest_vdev_aux_add_remove; 341 ztest_func_t ztest_split_pool; 342 ztest_func_t ztest_reguid; 343 ztest_func_t ztest_spa_upgrade; 344 345 uint64_t zopt_always = 0ULL * NANOSEC; /* all the time */ 346 uint64_t zopt_incessant = 1ULL * NANOSEC / 10; /* every 1/10 second */ 347 uint64_t zopt_often = 1ULL * NANOSEC; /* every second */ 348 uint64_t zopt_sometimes = 10ULL * NANOSEC; /* every 10 seconds */ 349 uint64_t zopt_rarely = 60ULL * NANOSEC; /* every 60 seconds */ 350 351 ztest_info_t ztest_info[] = { 352 { ztest_dmu_read_write, 1, &zopt_always }, 353 { ztest_dmu_write_parallel, 10, &zopt_always }, 354 { ztest_dmu_object_alloc_free, 1, &zopt_always }, 355 { ztest_dmu_commit_callbacks, 1, &zopt_always }, 356 { ztest_zap, 30, &zopt_always }, 357 { ztest_zap_parallel, 100, &zopt_always }, 358 { ztest_split_pool, 1, &zopt_always }, 359 { ztest_zil_commit, 1, &zopt_incessant }, 360 { ztest_zil_remount, 1, &zopt_sometimes }, 361 { ztest_dmu_read_write_zcopy, 1, &zopt_often }, 362 { ztest_dmu_objset_create_destroy, 1, &zopt_often }, 363 { ztest_dsl_prop_get_set, 1, &zopt_often }, 364 { ztest_spa_prop_get_set, 1, &zopt_sometimes }, 365 #if 0 366 { ztest_dmu_prealloc, 1, &zopt_sometimes }, 367 #endif 368 { ztest_fzap, 1, &zopt_sometimes }, 369 { ztest_dmu_snapshot_create_destroy, 1, &zopt_sometimes }, 370 { ztest_spa_create_destroy, 1, &zopt_sometimes }, 371 { ztest_fault_inject, 1, &zopt_sometimes }, 372 { ztest_ddt_repair, 1, &zopt_sometimes }, 373 { ztest_dmu_snapshot_hold, 1, &zopt_sometimes }, 374 { ztest_reguid, 1, &zopt_rarely }, 375 { ztest_spa_rename, 1, &zopt_rarely }, 376 { ztest_scrub, 1, &zopt_rarely }, 377 { ztest_spa_upgrade, 1, &zopt_rarely }, 378 { ztest_dsl_dataset_promote_busy, 1, &zopt_rarely }, 379 { ztest_vdev_attach_detach, 1, &zopt_sometimes }, 380 { ztest_vdev_LUN_growth, 1, &zopt_rarely }, 381 { ztest_vdev_add_remove, 1, 382 &ztest_opts.zo_vdevtime }, 383 { ztest_vdev_aux_add_remove, 1, 384 &ztest_opts.zo_vdevtime }, 385 }; 386 387 #define ZTEST_FUNCS (sizeof (ztest_info) / sizeof (ztest_info_t)) 388 389 /* 390 * The following struct is used to hold a list of uncalled commit callbacks. 391 * The callbacks are ordered by txg number. 392 */ 393 typedef struct ztest_cb_list { 394 mutex_t zcl_callbacks_lock; 395 list_t zcl_callbacks; 396 } ztest_cb_list_t; 397 398 /* 399 * Stuff we need to share writably between parent and child. 400 */ 401 typedef struct ztest_shared { 402 boolean_t zs_do_init; 403 hrtime_t zs_proc_start; 404 hrtime_t zs_proc_stop; 405 hrtime_t zs_thread_start; 406 hrtime_t zs_thread_stop; 407 hrtime_t zs_thread_kill; 408 uint64_t zs_enospc_count; 409 uint64_t zs_vdev_next_leaf; 410 uint64_t zs_vdev_aux; 411 uint64_t zs_alloc; 412 uint64_t zs_space; 413 uint64_t zs_splits; 414 uint64_t zs_mirrors; 415 uint64_t zs_metaslab_sz; 416 uint64_t zs_metaslab_df_alloc_threshold; 417 uint64_t zs_guid; 418 } ztest_shared_t; 419 420 #define ID_PARALLEL -1ULL 421 422 static char ztest_dev_template[] = "%s/%s.%llua"; 423 static char ztest_aux_template[] = "%s/%s.%s.%llu"; 424 ztest_shared_t *ztest_shared; 425 426 static spa_t *ztest_spa = NULL; 427 static ztest_ds_t *ztest_ds; 428 429 static mutex_t ztest_vdev_lock; 430 431 /* 432 * The ztest_name_lock protects the pool and dataset namespace used by 433 * the individual tests. To modify the namespace, consumers must grab 434 * this lock as writer. Grabbing the lock as reader will ensure that the 435 * namespace does not change while the lock is held. 436 */ 437 static rwlock_t ztest_name_lock; 438 439 static boolean_t ztest_dump_core = B_TRUE; 440 static boolean_t ztest_exiting; 441 442 /* Global commit callback list */ 443 static ztest_cb_list_t zcl; 444 445 enum ztest_object { 446 ZTEST_META_DNODE = 0, 447 ZTEST_DIROBJ, 448 ZTEST_OBJECTS 449 }; 450 451 static void usage(boolean_t) __NORETURN; 452 453 /* 454 * These libumem hooks provide a reasonable set of defaults for the allocator's 455 * debugging facilities. 456 */ 457 const char * 458 _umem_debug_init() 459 { 460 return ("default,verbose"); /* $UMEM_DEBUG setting */ 461 } 462 463 const char * 464 _umem_logging_init(void) 465 { 466 return ("fail,contents"); /* $UMEM_LOGGING setting */ 467 } 468 469 #define FATAL_MSG_SZ 1024 470 471 char *fatal_msg; 472 473 static void 474 fatal(int do_perror, char *message, ...) 475 { 476 va_list args; 477 int save_errno = errno; 478 char buf[FATAL_MSG_SZ]; 479 480 (void) fflush(stdout); 481 482 va_start(args, message); 483 (void) sprintf(buf, "ztest: "); 484 /* LINTED */ 485 (void) vsprintf(buf + strlen(buf), message, args); 486 va_end(args); 487 if (do_perror) { 488 (void) snprintf(buf + strlen(buf), FATAL_MSG_SZ - strlen(buf), 489 ": %s", strerror(save_errno)); 490 } 491 (void) fprintf(stderr, "%s\n", buf); 492 fatal_msg = buf; /* to ease debugging */ 493 if (ztest_dump_core) 494 abort(); 495 exit(3); 496 } 497 498 static int 499 str2shift(const char *buf) 500 { 501 const char *ends = "BKMGTPEZ"; 502 int i; 503 504 if (buf[0] == '\0') 505 return (0); 506 for (i = 0; i < strlen(ends); i++) { 507 if (toupper(buf[0]) == ends[i]) 508 break; 509 } 510 if (i == strlen(ends)) { 511 (void) fprintf(stderr, "ztest: invalid bytes suffix: %s\n", 512 buf); 513 usage(B_FALSE); 514 } 515 if (buf[1] == '\0' || (toupper(buf[1]) == 'B' && buf[2] == '\0')) { 516 return (10*i); 517 } 518 (void) fprintf(stderr, "ztest: invalid bytes suffix: %s\n", buf); 519 usage(B_FALSE); 520 /* NOTREACHED */ 521 } 522 523 static uint64_t 524 nicenumtoull(const char *buf) 525 { 526 char *end; 527 uint64_t val; 528 529 val = strtoull(buf, &end, 0); 530 if (end == buf) { 531 (void) fprintf(stderr, "ztest: bad numeric value: %s\n", buf); 532 usage(B_FALSE); 533 } else if (end[0] == '.') { 534 double fval = strtod(buf, &end); 535 fval *= pow(2, str2shift(end)); 536 if (fval > UINT64_MAX) { 537 (void) fprintf(stderr, "ztest: value too large: %s\n", 538 buf); 539 usage(B_FALSE); 540 } 541 val = (uint64_t)fval; 542 } else { 543 int shift = str2shift(end); 544 if (shift >= 64 || (val << shift) >> shift != val) { 545 (void) fprintf(stderr, "ztest: value too large: %s\n", 546 buf); 547 usage(B_FALSE); 548 } 549 val <<= shift; 550 } 551 return (val); 552 } 553 554 static void 555 usage(boolean_t requested) 556 { 557 const ztest_shared_opts_t *zo = &ztest_opts_defaults; 558 559 char nice_vdev_size[NN_NUMBUF_SZ]; 560 char nice_gang_bang[NN_NUMBUF_SZ]; 561 FILE *fp = requested ? stdout : stderr; 562 563 nicenum(zo->zo_vdev_size, nice_vdev_size, sizeof (nice_vdev_size)); 564 nicenum(zo->zo_metaslab_gang_bang, nice_gang_bang, 565 sizeof (nice_gang_bang)); 566 567 (void) fprintf(fp, "Usage: %s\n" 568 "\t[-v vdevs (default: %llu)]\n" 569 "\t[-s size_of_each_vdev (default: %s)]\n" 570 "\t[-a alignment_shift (default: %d)] use 0 for random\n" 571 "\t[-m mirror_copies (default: %d)]\n" 572 "\t[-r raidz_disks (default: %d)]\n" 573 "\t[-R raidz_parity (default: %d)]\n" 574 "\t[-d datasets (default: %d)]\n" 575 "\t[-t threads (default: %d)]\n" 576 "\t[-g gang_block_threshold (default: %s)]\n" 577 "\t[-i init_count (default: %d)] initialize pool i times\n" 578 "\t[-k kill_percentage (default: %llu%%)]\n" 579 "\t[-p pool_name (default: %s)]\n" 580 "\t[-f dir (default: %s)] file directory for vdev files\n" 581 "\t[-V] verbose (use multiple times for ever more blather)\n" 582 "\t[-E] use existing pool instead of creating new one\n" 583 "\t[-T time (default: %llu sec)] total run time\n" 584 "\t[-F freezeloops (default: %llu)] max loops in spa_freeze()\n" 585 "\t[-P passtime (default: %llu sec)] time per pass\n" 586 "\t[-B alt_ztest (default: <none>)] alternate ztest path\n" 587 "\t[-o variable=value] ... set global variable to an unsigned\n" 588 "\t 32-bit integer value\n" 589 "\t[-h] (print help)\n" 590 "", 591 zo->zo_pool, 592 (u_longlong_t)zo->zo_vdevs, /* -v */ 593 nice_vdev_size, /* -s */ 594 zo->zo_ashift, /* -a */ 595 zo->zo_mirrors, /* -m */ 596 zo->zo_raidz, /* -r */ 597 zo->zo_raidz_parity, /* -R */ 598 zo->zo_datasets, /* -d */ 599 zo->zo_threads, /* -t */ 600 nice_gang_bang, /* -g */ 601 zo->zo_init, /* -i */ 602 (u_longlong_t)zo->zo_killrate, /* -k */ 603 zo->zo_pool, /* -p */ 604 zo->zo_dir, /* -f */ 605 (u_longlong_t)zo->zo_time, /* -T */ 606 (u_longlong_t)zo->zo_maxloops, /* -F */ 607 (u_longlong_t)zo->zo_passtime); 608 exit(requested ? 0 : 1); 609 } 610 611 static void 612 process_options(int argc, char **argv) 613 { 614 char *path; 615 ztest_shared_opts_t *zo = &ztest_opts; 616 617 int opt; 618 uint64_t value; 619 char altdir[MAXNAMELEN] = { 0 }; 620 621 bcopy(&ztest_opts_defaults, zo, sizeof (*zo)); 622 623 while ((opt = getopt(argc, argv, 624 "v:s:a:m:r:R:d:t:g:i:k:p:f:VET:P:hF:B:o:")) != EOF) { 625 value = 0; 626 switch (opt) { 627 case 'v': 628 case 's': 629 case 'a': 630 case 'm': 631 case 'r': 632 case 'R': 633 case 'd': 634 case 't': 635 case 'g': 636 case 'i': 637 case 'k': 638 case 'T': 639 case 'P': 640 case 'F': 641 value = nicenumtoull(optarg); 642 } 643 switch (opt) { 644 case 'v': 645 zo->zo_vdevs = value; 646 break; 647 case 's': 648 zo->zo_vdev_size = MAX(SPA_MINDEVSIZE, value); 649 break; 650 case 'a': 651 zo->zo_ashift = value; 652 break; 653 case 'm': 654 zo->zo_mirrors = value; 655 break; 656 case 'r': 657 zo->zo_raidz = MAX(1, value); 658 break; 659 case 'R': 660 zo->zo_raidz_parity = MIN(MAX(value, 1), 3); 661 break; 662 case 'd': 663 zo->zo_datasets = MAX(1, value); 664 break; 665 case 't': 666 zo->zo_threads = MAX(1, value); 667 break; 668 case 'g': 669 zo->zo_metaslab_gang_bang = MAX(SPA_MINBLOCKSIZE << 1, 670 value); 671 break; 672 case 'i': 673 zo->zo_init = value; 674 break; 675 case 'k': 676 zo->zo_killrate = value; 677 break; 678 case 'p': 679 (void) strlcpy(zo->zo_pool, optarg, 680 sizeof (zo->zo_pool)); 681 break; 682 case 'f': 683 path = realpath(optarg, NULL); 684 if (path == NULL) { 685 (void) fprintf(stderr, "error: %s: %s\n", 686 optarg, strerror(errno)); 687 usage(B_FALSE); 688 } else { 689 (void) strlcpy(zo->zo_dir, path, 690 sizeof (zo->zo_dir)); 691 } 692 break; 693 case 'V': 694 zo->zo_verbose++; 695 break; 696 case 'E': 697 zo->zo_init = 0; 698 break; 699 case 'T': 700 zo->zo_time = value; 701 break; 702 case 'P': 703 zo->zo_passtime = MAX(1, value); 704 break; 705 case 'F': 706 zo->zo_maxloops = MAX(1, value); 707 break; 708 case 'B': 709 (void) strlcpy(altdir, optarg, sizeof (altdir)); 710 break; 711 case 'o': 712 if (set_global_var(optarg) != 0) 713 usage(B_FALSE); 714 break; 715 case 'h': 716 usage(B_TRUE); 717 break; 718 case '?': 719 default: 720 usage(B_FALSE); 721 break; 722 } 723 } 724 725 zo->zo_raidz_parity = MIN(zo->zo_raidz_parity, zo->zo_raidz - 1); 726 727 zo->zo_vdevtime = 728 (zo->zo_vdevs > 0 ? zo->zo_time * NANOSEC / zo->zo_vdevs : 729 UINT64_MAX >> 2); 730 731 if (strlen(altdir) > 0) { 732 char *cmd; 733 char *realaltdir; 734 char *bin; 735 char *ztest; 736 char *isa; 737 int isalen; 738 739 cmd = umem_alloc(MAXPATHLEN, UMEM_NOFAIL); 740 realaltdir = umem_alloc(MAXPATHLEN, UMEM_NOFAIL); 741 742 VERIFY(NULL != realpath(getexecname(), cmd)); 743 if (0 != access(altdir, F_OK)) { 744 ztest_dump_core = B_FALSE; 745 fatal(B_TRUE, "invalid alternate ztest path: %s", 746 altdir); 747 } 748 VERIFY(NULL != realpath(altdir, realaltdir)); 749 750 /* 751 * 'cmd' should be of the form "<anything>/usr/bin/<isa>/ztest". 752 * We want to extract <isa> to determine if we should use 753 * 32 or 64 bit binaries. 754 */ 755 bin = strstr(cmd, "/usr/bin/"); 756 ztest = strstr(bin, "/ztest"); 757 isa = bin + 9; 758 isalen = ztest - isa; 759 (void) snprintf(zo->zo_alt_ztest, sizeof (zo->zo_alt_ztest), 760 "%s/usr/bin/%.*s/ztest", realaltdir, isalen, isa); 761 (void) snprintf(zo->zo_alt_libpath, sizeof (zo->zo_alt_libpath), 762 "%s/usr/lib/%.*s", realaltdir, isalen, isa); 763 764 if (0 != access(zo->zo_alt_ztest, X_OK)) { 765 ztest_dump_core = B_FALSE; 766 fatal(B_TRUE, "invalid alternate ztest: %s", 767 zo->zo_alt_ztest); 768 } else if (0 != access(zo->zo_alt_libpath, X_OK)) { 769 ztest_dump_core = B_FALSE; 770 fatal(B_TRUE, "invalid alternate lib directory %s", 771 zo->zo_alt_libpath); 772 } 773 774 umem_free(cmd, MAXPATHLEN); 775 umem_free(realaltdir, MAXPATHLEN); 776 } 777 } 778 779 static void 780 ztest_kill(ztest_shared_t *zs) 781 { 782 zs->zs_alloc = metaslab_class_get_alloc(spa_normal_class(ztest_spa)); 783 zs->zs_space = metaslab_class_get_space(spa_normal_class(ztest_spa)); 784 785 /* 786 * Before we kill off ztest, make sure that the config is updated. 787 * See comment above spa_config_sync(). 788 */ 789 mutex_enter(&spa_namespace_lock); 790 spa_config_sync(ztest_spa, B_FALSE, B_FALSE); 791 mutex_exit(&spa_namespace_lock); 792 793 zfs_dbgmsg_print(FTAG); 794 (void) kill(getpid(), SIGKILL); 795 } 796 797 static uint64_t 798 ztest_random(uint64_t range) 799 { 800 uint64_t r; 801 802 ASSERT3S(ztest_fd_rand, >=, 0); 803 804 if (range == 0) 805 return (0); 806 807 if (read(ztest_fd_rand, &r, sizeof (r)) != sizeof (r)) 808 fatal(1, "short read from /dev/urandom"); 809 810 return (r % range); 811 } 812 813 /* ARGSUSED */ 814 static void 815 ztest_record_enospc(const char *s) 816 { 817 ztest_shared->zs_enospc_count++; 818 } 819 820 static uint64_t 821 ztest_get_ashift(void) 822 { 823 if (ztest_opts.zo_ashift == 0) 824 return (SPA_MINBLOCKSHIFT + ztest_random(5)); 825 return (ztest_opts.zo_ashift); 826 } 827 828 static nvlist_t * 829 make_vdev_file(char *path, char *aux, char *pool, size_t size, uint64_t ashift) 830 { 831 char pathbuf[MAXPATHLEN]; 832 uint64_t vdev; 833 nvlist_t *file; 834 835 if (ashift == 0) 836 ashift = ztest_get_ashift(); 837 838 if (path == NULL) { 839 path = pathbuf; 840 841 if (aux != NULL) { 842 vdev = ztest_shared->zs_vdev_aux; 843 (void) snprintf(path, sizeof (pathbuf), 844 ztest_aux_template, ztest_opts.zo_dir, 845 pool == NULL ? ztest_opts.zo_pool : pool, 846 aux, vdev); 847 } else { 848 vdev = ztest_shared->zs_vdev_next_leaf++; 849 (void) snprintf(path, sizeof (pathbuf), 850 ztest_dev_template, ztest_opts.zo_dir, 851 pool == NULL ? ztest_opts.zo_pool : pool, vdev); 852 } 853 } 854 855 if (size != 0) { 856 int fd = open(path, O_RDWR | O_CREAT | O_TRUNC, 0666); 857 if (fd == -1) 858 fatal(1, "can't open %s", path); 859 if (ftruncate(fd, size) != 0) 860 fatal(1, "can't ftruncate %s", path); 861 (void) close(fd); 862 } 863 864 VERIFY(nvlist_alloc(&file, NV_UNIQUE_NAME, 0) == 0); 865 VERIFY(nvlist_add_string(file, ZPOOL_CONFIG_TYPE, VDEV_TYPE_FILE) == 0); 866 VERIFY(nvlist_add_string(file, ZPOOL_CONFIG_PATH, path) == 0); 867 VERIFY(nvlist_add_uint64(file, ZPOOL_CONFIG_ASHIFT, ashift) == 0); 868 869 return (file); 870 } 871 872 static nvlist_t * 873 make_vdev_raidz(char *path, char *aux, char *pool, size_t size, 874 uint64_t ashift, int r) 875 { 876 nvlist_t *raidz, **child; 877 int c; 878 879 if (r < 2) 880 return (make_vdev_file(path, aux, pool, size, ashift)); 881 child = umem_alloc(r * sizeof (nvlist_t *), UMEM_NOFAIL); 882 883 for (c = 0; c < r; c++) 884 child[c] = make_vdev_file(path, aux, pool, size, ashift); 885 886 VERIFY(nvlist_alloc(&raidz, NV_UNIQUE_NAME, 0) == 0); 887 VERIFY(nvlist_add_string(raidz, ZPOOL_CONFIG_TYPE, 888 VDEV_TYPE_RAIDZ) == 0); 889 VERIFY(nvlist_add_uint64(raidz, ZPOOL_CONFIG_NPARITY, 890 ztest_opts.zo_raidz_parity) == 0); 891 VERIFY(nvlist_add_nvlist_array(raidz, ZPOOL_CONFIG_CHILDREN, 892 child, r) == 0); 893 894 for (c = 0; c < r; c++) 895 nvlist_free(child[c]); 896 897 umem_free(child, r * sizeof (nvlist_t *)); 898 899 return (raidz); 900 } 901 902 static nvlist_t * 903 make_vdev_mirror(char *path, char *aux, char *pool, size_t size, 904 uint64_t ashift, int r, int m) 905 { 906 nvlist_t *mirror, **child; 907 int c; 908 909 if (m < 1) 910 return (make_vdev_raidz(path, aux, pool, size, ashift, r)); 911 912 child = umem_alloc(m * sizeof (nvlist_t *), UMEM_NOFAIL); 913 914 for (c = 0; c < m; c++) 915 child[c] = make_vdev_raidz(path, aux, pool, size, ashift, r); 916 917 VERIFY(nvlist_alloc(&mirror, NV_UNIQUE_NAME, 0) == 0); 918 VERIFY(nvlist_add_string(mirror, ZPOOL_CONFIG_TYPE, 919 VDEV_TYPE_MIRROR) == 0); 920 VERIFY(nvlist_add_nvlist_array(mirror, ZPOOL_CONFIG_CHILDREN, 921 child, m) == 0); 922 923 for (c = 0; c < m; c++) 924 nvlist_free(child[c]); 925 926 umem_free(child, m * sizeof (nvlist_t *)); 927 928 return (mirror); 929 } 930 931 static nvlist_t * 932 make_vdev_root(char *path, char *aux, char *pool, size_t size, uint64_t ashift, 933 int log, int r, int m, int t) 934 { 935 nvlist_t *root, **child; 936 int c; 937 938 ASSERT(t > 0); 939 940 child = umem_alloc(t * sizeof (nvlist_t *), UMEM_NOFAIL); 941 942 for (c = 0; c < t; c++) { 943 child[c] = make_vdev_mirror(path, aux, pool, size, ashift, 944 r, m); 945 VERIFY(nvlist_add_uint64(child[c], ZPOOL_CONFIG_IS_LOG, 946 log) == 0); 947 } 948 949 VERIFY(nvlist_alloc(&root, NV_UNIQUE_NAME, 0) == 0); 950 VERIFY(nvlist_add_string(root, ZPOOL_CONFIG_TYPE, VDEV_TYPE_ROOT) == 0); 951 VERIFY(nvlist_add_nvlist_array(root, aux ? aux : ZPOOL_CONFIG_CHILDREN, 952 child, t) == 0); 953 954 for (c = 0; c < t; c++) 955 nvlist_free(child[c]); 956 957 umem_free(child, t * sizeof (nvlist_t *)); 958 959 return (root); 960 } 961 962 /* 963 * Find a random spa version. Returns back a random spa version in the 964 * range [initial_version, SPA_VERSION_FEATURES]. 965 */ 966 static uint64_t 967 ztest_random_spa_version(uint64_t initial_version) 968 { 969 uint64_t version = initial_version; 970 971 if (version <= SPA_VERSION_BEFORE_FEATURES) { 972 version = version + 973 ztest_random(SPA_VERSION_BEFORE_FEATURES - version + 1); 974 } 975 976 if (version > SPA_VERSION_BEFORE_FEATURES) 977 version = SPA_VERSION_FEATURES; 978 979 ASSERT(SPA_VERSION_IS_SUPPORTED(version)); 980 return (version); 981 } 982 983 static int 984 ztest_random_blocksize(void) 985 { 986 uint64_t block_shift; 987 /* 988 * Choose a block size >= the ashift. 989 * If the SPA supports new MAXBLOCKSIZE, test up to 1MB blocks. 990 */ 991 int maxbs = SPA_OLD_MAXBLOCKSHIFT; 992 if (spa_maxblocksize(ztest_spa) == SPA_MAXBLOCKSIZE) 993 maxbs = 20; 994 block_shift = ztest_random(maxbs - ztest_spa->spa_max_ashift + 1); 995 return (1 << (SPA_MINBLOCKSHIFT + block_shift)); 996 } 997 998 static int 999 ztest_random_ibshift(void) 1000 { 1001 return (DN_MIN_INDBLKSHIFT + 1002 ztest_random(DN_MAX_INDBLKSHIFT - DN_MIN_INDBLKSHIFT + 1)); 1003 } 1004 1005 static uint64_t 1006 ztest_random_vdev_top(spa_t *spa, boolean_t log_ok) 1007 { 1008 uint64_t top; 1009 vdev_t *rvd = spa->spa_root_vdev; 1010 vdev_t *tvd; 1011 1012 ASSERT(spa_config_held(spa, SCL_ALL, RW_READER) != 0); 1013 1014 do { 1015 top = ztest_random(rvd->vdev_children); 1016 tvd = rvd->vdev_child[top]; 1017 } while (tvd->vdev_ishole || (tvd->vdev_islog && !log_ok) || 1018 tvd->vdev_mg == NULL || tvd->vdev_mg->mg_class == NULL); 1019 1020 return (top); 1021 } 1022 1023 static uint64_t 1024 ztest_random_dsl_prop(zfs_prop_t prop) 1025 { 1026 uint64_t value; 1027 1028 do { 1029 value = zfs_prop_random_value(prop, ztest_random(-1ULL)); 1030 } while (prop == ZFS_PROP_CHECKSUM && value == ZIO_CHECKSUM_OFF); 1031 1032 return (value); 1033 } 1034 1035 static int 1036 ztest_dsl_prop_set_uint64(char *osname, zfs_prop_t prop, uint64_t value, 1037 boolean_t inherit) 1038 { 1039 const char *propname = zfs_prop_to_name(prop); 1040 const char *valname; 1041 char setpoint[MAXPATHLEN]; 1042 uint64_t curval; 1043 int error; 1044 1045 error = dsl_prop_set_int(osname, propname, 1046 (inherit ? ZPROP_SRC_NONE : ZPROP_SRC_LOCAL), value); 1047 1048 if (error == ENOSPC) { 1049 ztest_record_enospc(FTAG); 1050 return (error); 1051 } 1052 ASSERT0(error); 1053 1054 VERIFY0(dsl_prop_get_integer(osname, propname, &curval, setpoint)); 1055 1056 if (ztest_opts.zo_verbose >= 6) { 1057 VERIFY(zfs_prop_index_to_string(prop, curval, &valname) == 0); 1058 (void) printf("%s %s = %s at '%s'\n", 1059 osname, propname, valname, setpoint); 1060 } 1061 1062 return (error); 1063 } 1064 1065 static int 1066 ztest_spa_prop_set_uint64(zpool_prop_t prop, uint64_t value) 1067 { 1068 spa_t *spa = ztest_spa; 1069 nvlist_t *props = NULL; 1070 int error; 1071 1072 VERIFY(nvlist_alloc(&props, NV_UNIQUE_NAME, 0) == 0); 1073 VERIFY(nvlist_add_uint64(props, zpool_prop_to_name(prop), value) == 0); 1074 1075 error = spa_prop_set(spa, props); 1076 1077 nvlist_free(props); 1078 1079 if (error == ENOSPC) { 1080 ztest_record_enospc(FTAG); 1081 return (error); 1082 } 1083 ASSERT0(error); 1084 1085 return (error); 1086 } 1087 1088 static void 1089 ztest_rll_init(rll_t *rll) 1090 { 1091 rll->rll_writer = NULL; 1092 rll->rll_readers = 0; 1093 VERIFY(_mutex_init(&rll->rll_lock, USYNC_THREAD, NULL) == 0); 1094 VERIFY(cond_init(&rll->rll_cv, USYNC_THREAD, NULL) == 0); 1095 } 1096 1097 static void 1098 ztest_rll_destroy(rll_t *rll) 1099 { 1100 ASSERT(rll->rll_writer == NULL); 1101 ASSERT(rll->rll_readers == 0); 1102 VERIFY(_mutex_destroy(&rll->rll_lock) == 0); 1103 VERIFY(cond_destroy(&rll->rll_cv) == 0); 1104 } 1105 1106 static void 1107 ztest_rll_lock(rll_t *rll, rl_type_t type) 1108 { 1109 VERIFY(mutex_lock(&rll->rll_lock) == 0); 1110 1111 if (type == RL_READER) { 1112 while (rll->rll_writer != NULL) 1113 (void) cond_wait(&rll->rll_cv, &rll->rll_lock); 1114 rll->rll_readers++; 1115 } else { 1116 while (rll->rll_writer != NULL || rll->rll_readers) 1117 (void) cond_wait(&rll->rll_cv, &rll->rll_lock); 1118 rll->rll_writer = curthread; 1119 } 1120 1121 VERIFY(mutex_unlock(&rll->rll_lock) == 0); 1122 } 1123 1124 static void 1125 ztest_rll_unlock(rll_t *rll) 1126 { 1127 VERIFY(mutex_lock(&rll->rll_lock) == 0); 1128 1129 if (rll->rll_writer) { 1130 ASSERT(rll->rll_readers == 0); 1131 rll->rll_writer = NULL; 1132 } else { 1133 ASSERT(rll->rll_readers != 0); 1134 ASSERT(rll->rll_writer == NULL); 1135 rll->rll_readers--; 1136 } 1137 1138 if (rll->rll_writer == NULL && rll->rll_readers == 0) 1139 VERIFY(cond_broadcast(&rll->rll_cv) == 0); 1140 1141 VERIFY(mutex_unlock(&rll->rll_lock) == 0); 1142 } 1143 1144 static void 1145 ztest_object_lock(ztest_ds_t *zd, uint64_t object, rl_type_t type) 1146 { 1147 rll_t *rll = &zd->zd_object_lock[object & (ZTEST_OBJECT_LOCKS - 1)]; 1148 1149 ztest_rll_lock(rll, type); 1150 } 1151 1152 static void 1153 ztest_object_unlock(ztest_ds_t *zd, uint64_t object) 1154 { 1155 rll_t *rll = &zd->zd_object_lock[object & (ZTEST_OBJECT_LOCKS - 1)]; 1156 1157 ztest_rll_unlock(rll); 1158 } 1159 1160 static rl_t * 1161 ztest_range_lock(ztest_ds_t *zd, uint64_t object, uint64_t offset, 1162 uint64_t size, rl_type_t type) 1163 { 1164 uint64_t hash = object ^ (offset % (ZTEST_RANGE_LOCKS + 1)); 1165 rll_t *rll = &zd->zd_range_lock[hash & (ZTEST_RANGE_LOCKS - 1)]; 1166 rl_t *rl; 1167 1168 rl = umem_alloc(sizeof (*rl), UMEM_NOFAIL); 1169 rl->rl_object = object; 1170 rl->rl_offset = offset; 1171 rl->rl_size = size; 1172 rl->rl_lock = rll; 1173 1174 ztest_rll_lock(rll, type); 1175 1176 return (rl); 1177 } 1178 1179 static void 1180 ztest_range_unlock(rl_t *rl) 1181 { 1182 rll_t *rll = rl->rl_lock; 1183 1184 ztest_rll_unlock(rll); 1185 1186 umem_free(rl, sizeof (*rl)); 1187 } 1188 1189 static void 1190 ztest_zd_init(ztest_ds_t *zd, ztest_shared_ds_t *szd, objset_t *os) 1191 { 1192 zd->zd_os = os; 1193 zd->zd_zilog = dmu_objset_zil(os); 1194 zd->zd_shared = szd; 1195 dmu_objset_name(os, zd->zd_name); 1196 1197 if (zd->zd_shared != NULL) 1198 zd->zd_shared->zd_seq = 0; 1199 1200 VERIFY(rwlock_init(&zd->zd_zilog_lock, USYNC_THREAD, NULL) == 0); 1201 VERIFY(_mutex_init(&zd->zd_dirobj_lock, USYNC_THREAD, NULL) == 0); 1202 1203 for (int l = 0; l < ZTEST_OBJECT_LOCKS; l++) 1204 ztest_rll_init(&zd->zd_object_lock[l]); 1205 1206 for (int l = 0; l < ZTEST_RANGE_LOCKS; l++) 1207 ztest_rll_init(&zd->zd_range_lock[l]); 1208 } 1209 1210 static void 1211 ztest_zd_fini(ztest_ds_t *zd) 1212 { 1213 VERIFY(_mutex_destroy(&zd->zd_dirobj_lock) == 0); 1214 1215 for (int l = 0; l < ZTEST_OBJECT_LOCKS; l++) 1216 ztest_rll_destroy(&zd->zd_object_lock[l]); 1217 1218 for (int l = 0; l < ZTEST_RANGE_LOCKS; l++) 1219 ztest_rll_destroy(&zd->zd_range_lock[l]); 1220 } 1221 1222 #define TXG_MIGHTWAIT (ztest_random(10) == 0 ? TXG_NOWAIT : TXG_WAIT) 1223 1224 static uint64_t 1225 ztest_tx_assign(dmu_tx_t *tx, uint64_t txg_how, const char *tag) 1226 { 1227 uint64_t txg; 1228 int error; 1229 1230 /* 1231 * Attempt to assign tx to some transaction group. 1232 */ 1233 error = dmu_tx_assign(tx, txg_how); 1234 if (error) { 1235 if (error == ERESTART) { 1236 ASSERT(txg_how == TXG_NOWAIT); 1237 dmu_tx_wait(tx); 1238 } else { 1239 ASSERT3U(error, ==, ENOSPC); 1240 ztest_record_enospc(tag); 1241 } 1242 dmu_tx_abort(tx); 1243 return (0); 1244 } 1245 txg = dmu_tx_get_txg(tx); 1246 ASSERT(txg != 0); 1247 return (txg); 1248 } 1249 1250 static void 1251 ztest_pattern_set(void *buf, uint64_t size, uint64_t value) 1252 { 1253 uint64_t *ip = buf; 1254 uint64_t *ip_end = (uint64_t *)((uintptr_t)buf + (uintptr_t)size); 1255 1256 while (ip < ip_end) 1257 *ip++ = value; 1258 } 1259 1260 static boolean_t 1261 ztest_pattern_match(void *buf, uint64_t size, uint64_t value) 1262 { 1263 uint64_t *ip = buf; 1264 uint64_t *ip_end = (uint64_t *)((uintptr_t)buf + (uintptr_t)size); 1265 uint64_t diff = 0; 1266 1267 while (ip < ip_end) 1268 diff |= (value - *ip++); 1269 1270 return (diff == 0); 1271 } 1272 1273 static void 1274 ztest_bt_generate(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 bt->bt_magic = BT_MAGIC; 1278 bt->bt_objset = dmu_objset_id(os); 1279 bt->bt_object = object; 1280 bt->bt_offset = offset; 1281 bt->bt_gen = gen; 1282 bt->bt_txg = txg; 1283 bt->bt_crtxg = crtxg; 1284 } 1285 1286 static void 1287 ztest_bt_verify(ztest_block_tag_t *bt, objset_t *os, uint64_t object, 1288 uint64_t offset, uint64_t gen, uint64_t txg, uint64_t crtxg) 1289 { 1290 ASSERT3U(bt->bt_magic, ==, BT_MAGIC); 1291 ASSERT3U(bt->bt_objset, ==, dmu_objset_id(os)); 1292 ASSERT3U(bt->bt_object, ==, object); 1293 ASSERT3U(bt->bt_offset, ==, offset); 1294 ASSERT3U(bt->bt_gen, <=, gen); 1295 ASSERT3U(bt->bt_txg, <=, txg); 1296 ASSERT3U(bt->bt_crtxg, ==, crtxg); 1297 } 1298 1299 static ztest_block_tag_t * 1300 ztest_bt_bonus(dmu_buf_t *db) 1301 { 1302 dmu_object_info_t doi; 1303 ztest_block_tag_t *bt; 1304 1305 dmu_object_info_from_db(db, &doi); 1306 ASSERT3U(doi.doi_bonus_size, <=, db->db_size); 1307 ASSERT3U(doi.doi_bonus_size, >=, sizeof (*bt)); 1308 bt = (void *)((char *)db->db_data + doi.doi_bonus_size - sizeof (*bt)); 1309 1310 return (bt); 1311 } 1312 1313 /* 1314 * ZIL logging ops 1315 */ 1316 1317 #define lrz_type lr_mode 1318 #define lrz_blocksize lr_uid 1319 #define lrz_ibshift lr_gid 1320 #define lrz_bonustype lr_rdev 1321 #define lrz_bonuslen lr_crtime[1] 1322 1323 static void 1324 ztest_log_create(ztest_ds_t *zd, dmu_tx_t *tx, lr_create_t *lr) 1325 { 1326 char *name = (void *)(lr + 1); /* name follows lr */ 1327 size_t namesize = strlen(name) + 1; 1328 itx_t *itx; 1329 1330 if (zil_replaying(zd->zd_zilog, tx)) 1331 return; 1332 1333 itx = zil_itx_create(TX_CREATE, sizeof (*lr) + namesize); 1334 bcopy(&lr->lr_common + 1, &itx->itx_lr + 1, 1335 sizeof (*lr) + namesize - sizeof (lr_t)); 1336 1337 zil_itx_assign(zd->zd_zilog, itx, tx); 1338 } 1339 1340 static void 1341 ztest_log_remove(ztest_ds_t *zd, dmu_tx_t *tx, lr_remove_t *lr, uint64_t object) 1342 { 1343 char *name = (void *)(lr + 1); /* name follows lr */ 1344 size_t namesize = strlen(name) + 1; 1345 itx_t *itx; 1346 1347 if (zil_replaying(zd->zd_zilog, tx)) 1348 return; 1349 1350 itx = zil_itx_create(TX_REMOVE, sizeof (*lr) + namesize); 1351 bcopy(&lr->lr_common + 1, &itx->itx_lr + 1, 1352 sizeof (*lr) + namesize - sizeof (lr_t)); 1353 1354 itx->itx_oid = object; 1355 zil_itx_assign(zd->zd_zilog, itx, tx); 1356 } 1357 1358 static void 1359 ztest_log_write(ztest_ds_t *zd, dmu_tx_t *tx, lr_write_t *lr) 1360 { 1361 itx_t *itx; 1362 itx_wr_state_t write_state = ztest_random(WR_NUM_STATES); 1363 1364 if (zil_replaying(zd->zd_zilog, tx)) 1365 return; 1366 1367 if (lr->lr_length > ZIL_MAX_LOG_DATA) 1368 write_state = WR_INDIRECT; 1369 1370 itx = zil_itx_create(TX_WRITE, 1371 sizeof (*lr) + (write_state == WR_COPIED ? lr->lr_length : 0)); 1372 1373 if (write_state == WR_COPIED && 1374 dmu_read(zd->zd_os, lr->lr_foid, lr->lr_offset, lr->lr_length, 1375 ((lr_write_t *)&itx->itx_lr) + 1, DMU_READ_NO_PREFETCH) != 0) { 1376 zil_itx_destroy(itx); 1377 itx = zil_itx_create(TX_WRITE, sizeof (*lr)); 1378 write_state = WR_NEED_COPY; 1379 } 1380 itx->itx_private = zd; 1381 itx->itx_wr_state = write_state; 1382 itx->itx_sync = (ztest_random(8) == 0); 1383 1384 bcopy(&lr->lr_common + 1, &itx->itx_lr + 1, 1385 sizeof (*lr) - sizeof (lr_t)); 1386 1387 zil_itx_assign(zd->zd_zilog, itx, tx); 1388 } 1389 1390 static void 1391 ztest_log_truncate(ztest_ds_t *zd, dmu_tx_t *tx, lr_truncate_t *lr) 1392 { 1393 itx_t *itx; 1394 1395 if (zil_replaying(zd->zd_zilog, tx)) 1396 return; 1397 1398 itx = zil_itx_create(TX_TRUNCATE, sizeof (*lr)); 1399 bcopy(&lr->lr_common + 1, &itx->itx_lr + 1, 1400 sizeof (*lr) - sizeof (lr_t)); 1401 1402 itx->itx_sync = B_FALSE; 1403 zil_itx_assign(zd->zd_zilog, itx, tx); 1404 } 1405 1406 static void 1407 ztest_log_setattr(ztest_ds_t *zd, dmu_tx_t *tx, lr_setattr_t *lr) 1408 { 1409 itx_t *itx; 1410 1411 if (zil_replaying(zd->zd_zilog, tx)) 1412 return; 1413 1414 itx = zil_itx_create(TX_SETATTR, sizeof (*lr)); 1415 bcopy(&lr->lr_common + 1, &itx->itx_lr + 1, 1416 sizeof (*lr) - sizeof (lr_t)); 1417 1418 itx->itx_sync = B_FALSE; 1419 zil_itx_assign(zd->zd_zilog, itx, tx); 1420 } 1421 1422 /* 1423 * ZIL replay ops 1424 */ 1425 static int 1426 ztest_replay_create(ztest_ds_t *zd, lr_create_t *lr, boolean_t byteswap) 1427 { 1428 char *name = (void *)(lr + 1); /* name follows lr */ 1429 objset_t *os = zd->zd_os; 1430 ztest_block_tag_t *bbt; 1431 dmu_buf_t *db; 1432 dmu_tx_t *tx; 1433 uint64_t txg; 1434 int error = 0; 1435 1436 if (byteswap) 1437 byteswap_uint64_array(lr, sizeof (*lr)); 1438 1439 ASSERT(lr->lr_doid == ZTEST_DIROBJ); 1440 ASSERT(name[0] != '\0'); 1441 1442 tx = dmu_tx_create(os); 1443 1444 dmu_tx_hold_zap(tx, lr->lr_doid, B_TRUE, name); 1445 1446 if (lr->lrz_type == DMU_OT_ZAP_OTHER) { 1447 dmu_tx_hold_zap(tx, DMU_NEW_OBJECT, B_TRUE, NULL); 1448 } else { 1449 dmu_tx_hold_bonus(tx, DMU_NEW_OBJECT); 1450 } 1451 1452 txg = ztest_tx_assign(tx, TXG_WAIT, FTAG); 1453 if (txg == 0) 1454 return (ENOSPC); 1455 1456 ASSERT(dmu_objset_zil(os)->zl_replay == !!lr->lr_foid); 1457 1458 if (lr->lrz_type == DMU_OT_ZAP_OTHER) { 1459 if (lr->lr_foid == 0) { 1460 lr->lr_foid = zap_create(os, 1461 lr->lrz_type, lr->lrz_bonustype, 1462 lr->lrz_bonuslen, tx); 1463 } else { 1464 error = zap_create_claim(os, lr->lr_foid, 1465 lr->lrz_type, lr->lrz_bonustype, 1466 lr->lrz_bonuslen, tx); 1467 } 1468 } else { 1469 if (lr->lr_foid == 0) { 1470 lr->lr_foid = dmu_object_alloc(os, 1471 lr->lrz_type, 0, lr->lrz_bonustype, 1472 lr->lrz_bonuslen, tx); 1473 } else { 1474 error = dmu_object_claim(os, lr->lr_foid, 1475 lr->lrz_type, 0, lr->lrz_bonustype, 1476 lr->lrz_bonuslen, tx); 1477 } 1478 } 1479 1480 if (error) { 1481 ASSERT3U(error, ==, EEXIST); 1482 ASSERT(zd->zd_zilog->zl_replay); 1483 dmu_tx_commit(tx); 1484 return (error); 1485 } 1486 1487 ASSERT(lr->lr_foid != 0); 1488 1489 if (lr->lrz_type != DMU_OT_ZAP_OTHER) 1490 VERIFY3U(0, ==, dmu_object_set_blocksize(os, lr->lr_foid, 1491 lr->lrz_blocksize, lr->lrz_ibshift, tx)); 1492 1493 VERIFY3U(0, ==, dmu_bonus_hold(os, lr->lr_foid, FTAG, &db)); 1494 bbt = ztest_bt_bonus(db); 1495 dmu_buf_will_dirty(db, tx); 1496 ztest_bt_generate(bbt, os, lr->lr_foid, -1ULL, lr->lr_gen, txg, txg); 1497 dmu_buf_rele(db, FTAG); 1498 1499 VERIFY3U(0, ==, zap_add(os, lr->lr_doid, name, sizeof (uint64_t), 1, 1500 &lr->lr_foid, tx)); 1501 1502 (void) ztest_log_create(zd, tx, lr); 1503 1504 dmu_tx_commit(tx); 1505 1506 return (0); 1507 } 1508 1509 static int 1510 ztest_replay_remove(ztest_ds_t *zd, lr_remove_t *lr, boolean_t byteswap) 1511 { 1512 char *name = (void *)(lr + 1); /* name follows lr */ 1513 objset_t *os = zd->zd_os; 1514 dmu_object_info_t doi; 1515 dmu_tx_t *tx; 1516 uint64_t object, txg; 1517 1518 if (byteswap) 1519 byteswap_uint64_array(lr, sizeof (*lr)); 1520 1521 ASSERT(lr->lr_doid == ZTEST_DIROBJ); 1522 ASSERT(name[0] != '\0'); 1523 1524 VERIFY3U(0, ==, 1525 zap_lookup(os, lr->lr_doid, name, sizeof (object), 1, &object)); 1526 ASSERT(object != 0); 1527 1528 ztest_object_lock(zd, object, RL_WRITER); 1529 1530 VERIFY3U(0, ==, dmu_object_info(os, object, &doi)); 1531 1532 tx = dmu_tx_create(os); 1533 1534 dmu_tx_hold_zap(tx, lr->lr_doid, B_FALSE, name); 1535 dmu_tx_hold_free(tx, object, 0, DMU_OBJECT_END); 1536 1537 txg = ztest_tx_assign(tx, TXG_WAIT, FTAG); 1538 if (txg == 0) { 1539 ztest_object_unlock(zd, object); 1540 return (ENOSPC); 1541 } 1542 1543 if (doi.doi_type == DMU_OT_ZAP_OTHER) { 1544 VERIFY3U(0, ==, zap_destroy(os, object, tx)); 1545 } else { 1546 VERIFY3U(0, ==, dmu_object_free(os, object, tx)); 1547 } 1548 1549 VERIFY3U(0, ==, zap_remove(os, lr->lr_doid, name, tx)); 1550 1551 (void) ztest_log_remove(zd, tx, lr, object); 1552 1553 dmu_tx_commit(tx); 1554 1555 ztest_object_unlock(zd, object); 1556 1557 return (0); 1558 } 1559 1560 static int 1561 ztest_replay_write(ztest_ds_t *zd, lr_write_t *lr, boolean_t byteswap) 1562 { 1563 objset_t *os = zd->zd_os; 1564 void *data = lr + 1; /* data follows lr */ 1565 uint64_t offset, length; 1566 ztest_block_tag_t *bt = data; 1567 ztest_block_tag_t *bbt; 1568 uint64_t gen, txg, lrtxg, crtxg; 1569 dmu_object_info_t doi; 1570 dmu_tx_t *tx; 1571 dmu_buf_t *db; 1572 arc_buf_t *abuf = NULL; 1573 rl_t *rl; 1574 1575 if (byteswap) 1576 byteswap_uint64_array(lr, sizeof (*lr)); 1577 1578 offset = lr->lr_offset; 1579 length = lr->lr_length; 1580 1581 /* If it's a dmu_sync() block, write the whole block */ 1582 if (lr->lr_common.lrc_reclen == sizeof (lr_write_t)) { 1583 uint64_t blocksize = BP_GET_LSIZE(&lr->lr_blkptr); 1584 if (length < blocksize) { 1585 offset -= offset % blocksize; 1586 length = blocksize; 1587 } 1588 } 1589 1590 if (bt->bt_magic == BSWAP_64(BT_MAGIC)) 1591 byteswap_uint64_array(bt, sizeof (*bt)); 1592 1593 if (bt->bt_magic != BT_MAGIC) 1594 bt = NULL; 1595 1596 ztest_object_lock(zd, lr->lr_foid, RL_READER); 1597 rl = ztest_range_lock(zd, lr->lr_foid, offset, length, RL_WRITER); 1598 1599 VERIFY3U(0, ==, dmu_bonus_hold(os, lr->lr_foid, FTAG, &db)); 1600 1601 dmu_object_info_from_db(db, &doi); 1602 1603 bbt = ztest_bt_bonus(db); 1604 ASSERT3U(bbt->bt_magic, ==, BT_MAGIC); 1605 gen = bbt->bt_gen; 1606 crtxg = bbt->bt_crtxg; 1607 lrtxg = lr->lr_common.lrc_txg; 1608 1609 tx = dmu_tx_create(os); 1610 1611 dmu_tx_hold_write(tx, lr->lr_foid, offset, length); 1612 1613 if (ztest_random(8) == 0 && length == doi.doi_data_block_size && 1614 P2PHASE(offset, length) == 0) 1615 abuf = dmu_request_arcbuf(db, length); 1616 1617 txg = ztest_tx_assign(tx, TXG_WAIT, FTAG); 1618 if (txg == 0) { 1619 if (abuf != NULL) 1620 dmu_return_arcbuf(abuf); 1621 dmu_buf_rele(db, FTAG); 1622 ztest_range_unlock(rl); 1623 ztest_object_unlock(zd, lr->lr_foid); 1624 return (ENOSPC); 1625 } 1626 1627 if (bt != NULL) { 1628 /* 1629 * Usually, verify the old data before writing new data -- 1630 * but not always, because we also want to verify correct 1631 * behavior when the data was not recently read into cache. 1632 */ 1633 ASSERT(offset % doi.doi_data_block_size == 0); 1634 if (ztest_random(4) != 0) { 1635 int prefetch = ztest_random(2) ? 1636 DMU_READ_PREFETCH : DMU_READ_NO_PREFETCH; 1637 ztest_block_tag_t rbt; 1638 1639 VERIFY(dmu_read(os, lr->lr_foid, offset, 1640 sizeof (rbt), &rbt, prefetch) == 0); 1641 if (rbt.bt_magic == BT_MAGIC) { 1642 ztest_bt_verify(&rbt, os, lr->lr_foid, 1643 offset, gen, txg, crtxg); 1644 } 1645 } 1646 1647 /* 1648 * Writes can appear to be newer than the bonus buffer because 1649 * the ztest_get_data() callback does a dmu_read() of the 1650 * open-context data, which may be different than the data 1651 * as it was when the write was generated. 1652 */ 1653 if (zd->zd_zilog->zl_replay) { 1654 ztest_bt_verify(bt, os, lr->lr_foid, offset, 1655 MAX(gen, bt->bt_gen), MAX(txg, lrtxg), 1656 bt->bt_crtxg); 1657 } 1658 1659 /* 1660 * Set the bt's gen/txg to the bonus buffer's gen/txg 1661 * so that all of the usual ASSERTs will work. 1662 */ 1663 ztest_bt_generate(bt, os, lr->lr_foid, offset, gen, txg, crtxg); 1664 } 1665 1666 if (abuf == NULL) { 1667 dmu_write(os, lr->lr_foid, offset, length, data, tx); 1668 } else { 1669 bcopy(data, abuf->b_data, length); 1670 dmu_assign_arcbuf(db, offset, abuf, tx); 1671 } 1672 1673 (void) ztest_log_write(zd, tx, lr); 1674 1675 dmu_buf_rele(db, FTAG); 1676 1677 dmu_tx_commit(tx); 1678 1679 ztest_range_unlock(rl); 1680 ztest_object_unlock(zd, lr->lr_foid); 1681 1682 return (0); 1683 } 1684 1685 static int 1686 ztest_replay_truncate(ztest_ds_t *zd, lr_truncate_t *lr, boolean_t byteswap) 1687 { 1688 objset_t *os = zd->zd_os; 1689 dmu_tx_t *tx; 1690 uint64_t txg; 1691 rl_t *rl; 1692 1693 if (byteswap) 1694 byteswap_uint64_array(lr, sizeof (*lr)); 1695 1696 ztest_object_lock(zd, lr->lr_foid, RL_READER); 1697 rl = ztest_range_lock(zd, lr->lr_foid, lr->lr_offset, lr->lr_length, 1698 RL_WRITER); 1699 1700 tx = dmu_tx_create(os); 1701 1702 dmu_tx_hold_free(tx, lr->lr_foid, lr->lr_offset, lr->lr_length); 1703 1704 txg = ztest_tx_assign(tx, TXG_WAIT, FTAG); 1705 if (txg == 0) { 1706 ztest_range_unlock(rl); 1707 ztest_object_unlock(zd, lr->lr_foid); 1708 return (ENOSPC); 1709 } 1710 1711 VERIFY(dmu_free_range(os, lr->lr_foid, lr->lr_offset, 1712 lr->lr_length, tx) == 0); 1713 1714 (void) ztest_log_truncate(zd, tx, lr); 1715 1716 dmu_tx_commit(tx); 1717 1718 ztest_range_unlock(rl); 1719 ztest_object_unlock(zd, lr->lr_foid); 1720 1721 return (0); 1722 } 1723 1724 static int 1725 ztest_replay_setattr(ztest_ds_t *zd, lr_setattr_t *lr, boolean_t byteswap) 1726 { 1727 objset_t *os = zd->zd_os; 1728 dmu_tx_t *tx; 1729 dmu_buf_t *db; 1730 ztest_block_tag_t *bbt; 1731 uint64_t txg, lrtxg, crtxg; 1732 1733 if (byteswap) 1734 byteswap_uint64_array(lr, sizeof (*lr)); 1735 1736 ztest_object_lock(zd, lr->lr_foid, RL_WRITER); 1737 1738 VERIFY3U(0, ==, dmu_bonus_hold(os, lr->lr_foid, FTAG, &db)); 1739 1740 tx = dmu_tx_create(os); 1741 dmu_tx_hold_bonus(tx, lr->lr_foid); 1742 1743 txg = ztest_tx_assign(tx, TXG_WAIT, FTAG); 1744 if (txg == 0) { 1745 dmu_buf_rele(db, FTAG); 1746 ztest_object_unlock(zd, lr->lr_foid); 1747 return (ENOSPC); 1748 } 1749 1750 bbt = ztest_bt_bonus(db); 1751 ASSERT3U(bbt->bt_magic, ==, BT_MAGIC); 1752 crtxg = bbt->bt_crtxg; 1753 lrtxg = lr->lr_common.lrc_txg; 1754 1755 if (zd->zd_zilog->zl_replay) { 1756 ASSERT(lr->lr_size != 0); 1757 ASSERT(lr->lr_mode != 0); 1758 ASSERT(lrtxg != 0); 1759 } else { 1760 /* 1761 * Randomly change the size and increment the generation. 1762 */ 1763 lr->lr_size = (ztest_random(db->db_size / sizeof (*bbt)) + 1) * 1764 sizeof (*bbt); 1765 lr->lr_mode = bbt->bt_gen + 1; 1766 ASSERT(lrtxg == 0); 1767 } 1768 1769 /* 1770 * Verify that the current bonus buffer is not newer than our txg. 1771 */ 1772 ztest_bt_verify(bbt, os, lr->lr_foid, -1ULL, lr->lr_mode, 1773 MAX(txg, lrtxg), crtxg); 1774 1775 dmu_buf_will_dirty(db, tx); 1776 1777 ASSERT3U(lr->lr_size, >=, sizeof (*bbt)); 1778 ASSERT3U(lr->lr_size, <=, db->db_size); 1779 VERIFY0(dmu_set_bonus(db, lr->lr_size, tx)); 1780 bbt = ztest_bt_bonus(db); 1781 1782 ztest_bt_generate(bbt, os, lr->lr_foid, -1ULL, lr->lr_mode, txg, crtxg); 1783 1784 dmu_buf_rele(db, FTAG); 1785 1786 (void) ztest_log_setattr(zd, tx, lr); 1787 1788 dmu_tx_commit(tx); 1789 1790 ztest_object_unlock(zd, lr->lr_foid); 1791 1792 return (0); 1793 } 1794 1795 zil_replay_func_t *ztest_replay_vector[TX_MAX_TYPE] = { 1796 NULL, /* 0 no such transaction type */ 1797 ztest_replay_create, /* TX_CREATE */ 1798 NULL, /* TX_MKDIR */ 1799 NULL, /* TX_MKXATTR */ 1800 NULL, /* TX_SYMLINK */ 1801 ztest_replay_remove, /* TX_REMOVE */ 1802 NULL, /* TX_RMDIR */ 1803 NULL, /* TX_LINK */ 1804 NULL, /* TX_RENAME */ 1805 ztest_replay_write, /* TX_WRITE */ 1806 ztest_replay_truncate, /* TX_TRUNCATE */ 1807 ztest_replay_setattr, /* TX_SETATTR */ 1808 NULL, /* TX_ACL */ 1809 NULL, /* TX_CREATE_ACL */ 1810 NULL, /* TX_CREATE_ATTR */ 1811 NULL, /* TX_CREATE_ACL_ATTR */ 1812 NULL, /* TX_MKDIR_ACL */ 1813 NULL, /* TX_MKDIR_ATTR */ 1814 NULL, /* TX_MKDIR_ACL_ATTR */ 1815 NULL, /* TX_WRITE2 */ 1816 }; 1817 1818 /* 1819 * ZIL get_data callbacks 1820 */ 1821 1822 static void 1823 ztest_get_done(zgd_t *zgd, int error) 1824 { 1825 ztest_ds_t *zd = zgd->zgd_private; 1826 uint64_t object = zgd->zgd_rl->rl_object; 1827 1828 if (zgd->zgd_db) 1829 dmu_buf_rele(zgd->zgd_db, zgd); 1830 1831 ztest_range_unlock(zgd->zgd_rl); 1832 ztest_object_unlock(zd, object); 1833 1834 if (error == 0 && zgd->zgd_bp) 1835 zil_lwb_add_block(zgd->zgd_lwb, zgd->zgd_bp); 1836 1837 umem_free(zgd, sizeof (*zgd)); 1838 } 1839 1840 static int 1841 ztest_get_data(void *arg, lr_write_t *lr, char *buf, struct lwb *lwb, 1842 zio_t *zio) 1843 { 1844 ztest_ds_t *zd = arg; 1845 objset_t *os = zd->zd_os; 1846 uint64_t object = lr->lr_foid; 1847 uint64_t offset = lr->lr_offset; 1848 uint64_t size = lr->lr_length; 1849 uint64_t txg = lr->lr_common.lrc_txg; 1850 uint64_t crtxg; 1851 dmu_object_info_t doi; 1852 dmu_buf_t *db; 1853 zgd_t *zgd; 1854 int error; 1855 1856 ASSERT3P(lwb, !=, NULL); 1857 ASSERT3P(zio, !=, NULL); 1858 ASSERT3U(size, !=, 0); 1859 1860 ztest_object_lock(zd, object, RL_READER); 1861 error = dmu_bonus_hold(os, object, FTAG, &db); 1862 if (error) { 1863 ztest_object_unlock(zd, object); 1864 return (error); 1865 } 1866 1867 crtxg = ztest_bt_bonus(db)->bt_crtxg; 1868 1869 if (crtxg == 0 || crtxg > txg) { 1870 dmu_buf_rele(db, FTAG); 1871 ztest_object_unlock(zd, object); 1872 return (ENOENT); 1873 } 1874 1875 dmu_object_info_from_db(db, &doi); 1876 dmu_buf_rele(db, FTAG); 1877 db = NULL; 1878 1879 zgd = umem_zalloc(sizeof (*zgd), UMEM_NOFAIL); 1880 zgd->zgd_lwb = lwb; 1881 zgd->zgd_private = zd; 1882 1883 if (buf != NULL) { /* immediate write */ 1884 zgd->zgd_rl = ztest_range_lock(zd, object, offset, size, 1885 RL_READER); 1886 1887 error = dmu_read(os, object, offset, size, buf, 1888 DMU_READ_NO_PREFETCH); 1889 ASSERT(error == 0); 1890 } else { 1891 size = doi.doi_data_block_size; 1892 if (ISP2(size)) { 1893 offset = P2ALIGN(offset, size); 1894 } else { 1895 ASSERT(offset < size); 1896 offset = 0; 1897 } 1898 1899 zgd->zgd_rl = ztest_range_lock(zd, object, offset, size, 1900 RL_READER); 1901 1902 error = dmu_buf_hold(os, object, offset, zgd, &db, 1903 DMU_READ_NO_PREFETCH); 1904 1905 if (error == 0) { 1906 blkptr_t *bp = &lr->lr_blkptr; 1907 1908 zgd->zgd_db = db; 1909 zgd->zgd_bp = bp; 1910 1911 ASSERT(db->db_offset == offset); 1912 ASSERT(db->db_size == size); 1913 1914 error = dmu_sync(zio, lr->lr_common.lrc_txg, 1915 ztest_get_done, zgd); 1916 1917 if (error == 0) 1918 return (0); 1919 } 1920 } 1921 1922 ztest_get_done(zgd, error); 1923 1924 return (error); 1925 } 1926 1927 static void * 1928 ztest_lr_alloc(size_t lrsize, char *name) 1929 { 1930 char *lr; 1931 size_t namesize = name ? strlen(name) + 1 : 0; 1932 1933 lr = umem_zalloc(lrsize + namesize, UMEM_NOFAIL); 1934 1935 if (name) 1936 bcopy(name, lr + lrsize, namesize); 1937 1938 return (lr); 1939 } 1940 1941 void 1942 ztest_lr_free(void *lr, size_t lrsize, char *name) 1943 { 1944 size_t namesize = name ? strlen(name) + 1 : 0; 1945 1946 umem_free(lr, lrsize + namesize); 1947 } 1948 1949 /* 1950 * Lookup a bunch of objects. Returns the number of objects not found. 1951 */ 1952 static int 1953 ztest_lookup(ztest_ds_t *zd, ztest_od_t *od, int count) 1954 { 1955 int missing = 0; 1956 int error; 1957 1958 ASSERT(_mutex_held(&zd->zd_dirobj_lock)); 1959 1960 for (int i = 0; i < count; i++, od++) { 1961 od->od_object = 0; 1962 error = zap_lookup(zd->zd_os, od->od_dir, od->od_name, 1963 sizeof (uint64_t), 1, &od->od_object); 1964 if (error) { 1965 ASSERT(error == ENOENT); 1966 ASSERT(od->od_object == 0); 1967 missing++; 1968 } else { 1969 dmu_buf_t *db; 1970 ztest_block_tag_t *bbt; 1971 dmu_object_info_t doi; 1972 1973 ASSERT(od->od_object != 0); 1974 ASSERT(missing == 0); /* there should be no gaps */ 1975 1976 ztest_object_lock(zd, od->od_object, RL_READER); 1977 VERIFY3U(0, ==, dmu_bonus_hold(zd->zd_os, 1978 od->od_object, FTAG, &db)); 1979 dmu_object_info_from_db(db, &doi); 1980 bbt = ztest_bt_bonus(db); 1981 ASSERT3U(bbt->bt_magic, ==, BT_MAGIC); 1982 od->od_type = doi.doi_type; 1983 od->od_blocksize = doi.doi_data_block_size; 1984 od->od_gen = bbt->bt_gen; 1985 dmu_buf_rele(db, FTAG); 1986 ztest_object_unlock(zd, od->od_object); 1987 } 1988 } 1989 1990 return (missing); 1991 } 1992 1993 static int 1994 ztest_create(ztest_ds_t *zd, ztest_od_t *od, int count) 1995 { 1996 int missing = 0; 1997 1998 ASSERT(_mutex_held(&zd->zd_dirobj_lock)); 1999 2000 for (int i = 0; i < count; i++, od++) { 2001 if (missing) { 2002 od->od_object = 0; 2003 missing++; 2004 continue; 2005 } 2006 2007 lr_create_t *lr = ztest_lr_alloc(sizeof (*lr), od->od_name); 2008 2009 lr->lr_doid = od->od_dir; 2010 lr->lr_foid = 0; /* 0 to allocate, > 0 to claim */ 2011 lr->lrz_type = od->od_crtype; 2012 lr->lrz_blocksize = od->od_crblocksize; 2013 lr->lrz_ibshift = ztest_random_ibshift(); 2014 lr->lrz_bonustype = DMU_OT_UINT64_OTHER; 2015 lr->lrz_bonuslen = dmu_bonus_max(); 2016 lr->lr_gen = od->od_crgen; 2017 lr->lr_crtime[0] = time(NULL); 2018 2019 if (ztest_replay_create(zd, lr, B_FALSE) != 0) { 2020 ASSERT(missing == 0); 2021 od->od_object = 0; 2022 missing++; 2023 } else { 2024 od->od_object = lr->lr_foid; 2025 od->od_type = od->od_crtype; 2026 od->od_blocksize = od->od_crblocksize; 2027 od->od_gen = od->od_crgen; 2028 ASSERT(od->od_object != 0); 2029 } 2030 2031 ztest_lr_free(lr, sizeof (*lr), od->od_name); 2032 } 2033 2034 return (missing); 2035 } 2036 2037 static int 2038 ztest_remove(ztest_ds_t *zd, ztest_od_t *od, int count) 2039 { 2040 int missing = 0; 2041 int error; 2042 2043 ASSERT(_mutex_held(&zd->zd_dirobj_lock)); 2044 2045 od += count - 1; 2046 2047 for (int i = count - 1; i >= 0; i--, od--) { 2048 if (missing) { 2049 missing++; 2050 continue; 2051 } 2052 2053 /* 2054 * No object was found. 2055 */ 2056 if (od->od_object == 0) 2057 continue; 2058 2059 lr_remove_t *lr = ztest_lr_alloc(sizeof (*lr), od->od_name); 2060 2061 lr->lr_doid = od->od_dir; 2062 2063 if ((error = ztest_replay_remove(zd, lr, B_FALSE)) != 0) { 2064 ASSERT3U(error, ==, ENOSPC); 2065 missing++; 2066 } else { 2067 od->od_object = 0; 2068 } 2069 ztest_lr_free(lr, sizeof (*lr), od->od_name); 2070 } 2071 2072 return (missing); 2073 } 2074 2075 static int 2076 ztest_write(ztest_ds_t *zd, uint64_t object, uint64_t offset, uint64_t size, 2077 void *data) 2078 { 2079 lr_write_t *lr; 2080 int error; 2081 2082 lr = ztest_lr_alloc(sizeof (*lr) + size, NULL); 2083 2084 lr->lr_foid = object; 2085 lr->lr_offset = offset; 2086 lr->lr_length = size; 2087 lr->lr_blkoff = 0; 2088 BP_ZERO(&lr->lr_blkptr); 2089 2090 bcopy(data, lr + 1, size); 2091 2092 error = ztest_replay_write(zd, lr, B_FALSE); 2093 2094 ztest_lr_free(lr, sizeof (*lr) + size, NULL); 2095 2096 return (error); 2097 } 2098 2099 static int 2100 ztest_truncate(ztest_ds_t *zd, uint64_t object, uint64_t offset, uint64_t size) 2101 { 2102 lr_truncate_t *lr; 2103 int error; 2104 2105 lr = ztest_lr_alloc(sizeof (*lr), NULL); 2106 2107 lr->lr_foid = object; 2108 lr->lr_offset = offset; 2109 lr->lr_length = size; 2110 2111 error = ztest_replay_truncate(zd, lr, B_FALSE); 2112 2113 ztest_lr_free(lr, sizeof (*lr), NULL); 2114 2115 return (error); 2116 } 2117 2118 static int 2119 ztest_setattr(ztest_ds_t *zd, uint64_t object) 2120 { 2121 lr_setattr_t *lr; 2122 int error; 2123 2124 lr = ztest_lr_alloc(sizeof (*lr), NULL); 2125 2126 lr->lr_foid = object; 2127 lr->lr_size = 0; 2128 lr->lr_mode = 0; 2129 2130 error = ztest_replay_setattr(zd, lr, B_FALSE); 2131 2132 ztest_lr_free(lr, sizeof (*lr), NULL); 2133 2134 return (error); 2135 } 2136 2137 static void 2138 ztest_prealloc(ztest_ds_t *zd, uint64_t object, uint64_t offset, uint64_t size) 2139 { 2140 objset_t *os = zd->zd_os; 2141 dmu_tx_t *tx; 2142 uint64_t txg; 2143 rl_t *rl; 2144 2145 txg_wait_synced(dmu_objset_pool(os), 0); 2146 2147 ztest_object_lock(zd, object, RL_READER); 2148 rl = ztest_range_lock(zd, object, offset, size, RL_WRITER); 2149 2150 tx = dmu_tx_create(os); 2151 2152 dmu_tx_hold_write(tx, object, offset, size); 2153 2154 txg = ztest_tx_assign(tx, TXG_WAIT, FTAG); 2155 2156 if (txg != 0) { 2157 dmu_prealloc(os, object, offset, size, tx); 2158 dmu_tx_commit(tx); 2159 txg_wait_synced(dmu_objset_pool(os), txg); 2160 } else { 2161 (void) dmu_free_long_range(os, object, offset, size); 2162 } 2163 2164 ztest_range_unlock(rl); 2165 ztest_object_unlock(zd, object); 2166 } 2167 2168 static void 2169 ztest_io(ztest_ds_t *zd, uint64_t object, uint64_t offset) 2170 { 2171 int err; 2172 ztest_block_tag_t wbt; 2173 dmu_object_info_t doi; 2174 enum ztest_io_type io_type; 2175 uint64_t blocksize; 2176 void *data; 2177 2178 VERIFY(dmu_object_info(zd->zd_os, object, &doi) == 0); 2179 blocksize = doi.doi_data_block_size; 2180 data = umem_alloc(blocksize, UMEM_NOFAIL); 2181 2182 /* 2183 * Pick an i/o type at random, biased toward writing block tags. 2184 */ 2185 io_type = ztest_random(ZTEST_IO_TYPES); 2186 if (ztest_random(2) == 0) 2187 io_type = ZTEST_IO_WRITE_TAG; 2188 2189 (void) rw_rdlock(&zd->zd_zilog_lock); 2190 2191 switch (io_type) { 2192 2193 case ZTEST_IO_WRITE_TAG: 2194 ztest_bt_generate(&wbt, zd->zd_os, object, offset, 0, 0, 0); 2195 (void) ztest_write(zd, object, offset, sizeof (wbt), &wbt); 2196 break; 2197 2198 case ZTEST_IO_WRITE_PATTERN: 2199 (void) memset(data, 'a' + (object + offset) % 5, blocksize); 2200 if (ztest_random(2) == 0) { 2201 /* 2202 * Induce fletcher2 collisions to ensure that 2203 * zio_ddt_collision() detects and resolves them 2204 * when using fletcher2-verify for deduplication. 2205 */ 2206 ((uint64_t *)data)[0] ^= 1ULL << 63; 2207 ((uint64_t *)data)[4] ^= 1ULL << 63; 2208 } 2209 (void) ztest_write(zd, object, offset, blocksize, data); 2210 break; 2211 2212 case ZTEST_IO_WRITE_ZEROES: 2213 bzero(data, blocksize); 2214 (void) ztest_write(zd, object, offset, blocksize, data); 2215 break; 2216 2217 case ZTEST_IO_TRUNCATE: 2218 (void) ztest_truncate(zd, object, offset, blocksize); 2219 break; 2220 2221 case ZTEST_IO_SETATTR: 2222 (void) ztest_setattr(zd, object); 2223 break; 2224 2225 case ZTEST_IO_REWRITE: 2226 (void) rw_rdlock(&ztest_name_lock); 2227 err = ztest_dsl_prop_set_uint64(zd->zd_name, 2228 ZFS_PROP_CHECKSUM, spa_dedup_checksum(ztest_spa), 2229 B_FALSE); 2230 VERIFY(err == 0 || err == ENOSPC); 2231 err = ztest_dsl_prop_set_uint64(zd->zd_name, 2232 ZFS_PROP_COMPRESSION, 2233 ztest_random_dsl_prop(ZFS_PROP_COMPRESSION), 2234 B_FALSE); 2235 VERIFY(err == 0 || err == ENOSPC); 2236 (void) rw_unlock(&ztest_name_lock); 2237 2238 VERIFY0(dmu_read(zd->zd_os, object, offset, blocksize, data, 2239 DMU_READ_NO_PREFETCH)); 2240 2241 (void) ztest_write(zd, object, offset, blocksize, data); 2242 break; 2243 } 2244 2245 (void) rw_unlock(&zd->zd_zilog_lock); 2246 2247 umem_free(data, blocksize); 2248 } 2249 2250 /* 2251 * Initialize an object description template. 2252 */ 2253 static void 2254 ztest_od_init(ztest_od_t *od, uint64_t id, char *tag, uint64_t index, 2255 dmu_object_type_t type, uint64_t blocksize, uint64_t gen) 2256 { 2257 od->od_dir = ZTEST_DIROBJ; 2258 od->od_object = 0; 2259 2260 od->od_crtype = type; 2261 od->od_crblocksize = blocksize ? blocksize : ztest_random_blocksize(); 2262 od->od_crgen = gen; 2263 2264 od->od_type = DMU_OT_NONE; 2265 od->od_blocksize = 0; 2266 od->od_gen = 0; 2267 2268 (void) snprintf(od->od_name, sizeof (od->od_name), "%s(%lld)[%llu]", 2269 tag, (int64_t)id, index); 2270 } 2271 2272 /* 2273 * Lookup or create the objects for a test using the od template. 2274 * If the objects do not all exist, or if 'remove' is specified, 2275 * remove any existing objects and create new ones. Otherwise, 2276 * use the existing objects. 2277 */ 2278 static int 2279 ztest_object_init(ztest_ds_t *zd, ztest_od_t *od, size_t size, boolean_t remove) 2280 { 2281 int count = size / sizeof (*od); 2282 int rv = 0; 2283 2284 VERIFY(mutex_lock(&zd->zd_dirobj_lock) == 0); 2285 if ((ztest_lookup(zd, od, count) != 0 || remove) && 2286 (ztest_remove(zd, od, count) != 0 || 2287 ztest_create(zd, od, count) != 0)) 2288 rv = -1; 2289 zd->zd_od = od; 2290 VERIFY(mutex_unlock(&zd->zd_dirobj_lock) == 0); 2291 2292 return (rv); 2293 } 2294 2295 /* ARGSUSED */ 2296 void 2297 ztest_zil_commit(ztest_ds_t *zd, uint64_t id) 2298 { 2299 zilog_t *zilog = zd->zd_zilog; 2300 2301 (void) rw_rdlock(&zd->zd_zilog_lock); 2302 2303 zil_commit(zilog, ztest_random(ZTEST_OBJECTS)); 2304 2305 /* 2306 * Remember the committed values in zd, which is in parent/child 2307 * shared memory. If we die, the next iteration of ztest_run() 2308 * will verify that the log really does contain this record. 2309 */ 2310 mutex_enter(&zilog->zl_lock); 2311 ASSERT(zd->zd_shared != NULL); 2312 ASSERT3U(zd->zd_shared->zd_seq, <=, zilog->zl_commit_lr_seq); 2313 zd->zd_shared->zd_seq = zilog->zl_commit_lr_seq; 2314 mutex_exit(&zilog->zl_lock); 2315 2316 (void) rw_unlock(&zd->zd_zilog_lock); 2317 } 2318 2319 /* 2320 * This function is designed to simulate the operations that occur during a 2321 * mount/unmount operation. We hold the dataset across these operations in an 2322 * attempt to expose any implicit assumptions about ZIL management. 2323 */ 2324 /* ARGSUSED */ 2325 void 2326 ztest_zil_remount(ztest_ds_t *zd, uint64_t id) 2327 { 2328 objset_t *os = zd->zd_os; 2329 2330 /* 2331 * We grab the zd_dirobj_lock to ensure that no other thread is 2332 * updating the zil (i.e. adding in-memory log records) and the 2333 * zd_zilog_lock to block any I/O. 2334 */ 2335 VERIFY0(mutex_lock(&zd->zd_dirobj_lock)); 2336 (void) rw_wrlock(&zd->zd_zilog_lock); 2337 2338 /* zfsvfs_teardown() */ 2339 zil_close(zd->zd_zilog); 2340 2341 /* zfsvfs_setup() */ 2342 VERIFY(zil_open(os, ztest_get_data) == zd->zd_zilog); 2343 zil_replay(os, zd, ztest_replay_vector); 2344 2345 (void) rw_unlock(&zd->zd_zilog_lock); 2346 VERIFY(mutex_unlock(&zd->zd_dirobj_lock) == 0); 2347 } 2348 2349 /* 2350 * Verify that we can't destroy an active pool, create an existing pool, 2351 * or create a pool with a bad vdev spec. 2352 */ 2353 /* ARGSUSED */ 2354 void 2355 ztest_spa_create_destroy(ztest_ds_t *zd, uint64_t id) 2356 { 2357 ztest_shared_opts_t *zo = &ztest_opts; 2358 spa_t *spa; 2359 nvlist_t *nvroot; 2360 2361 /* 2362 * Attempt to create using a bad file. 2363 */ 2364 nvroot = make_vdev_root("/dev/bogus", NULL, NULL, 0, 0, 0, 0, 0, 1); 2365 VERIFY3U(ENOENT, ==, 2366 spa_create("ztest_bad_file", nvroot, NULL, NULL)); 2367 nvlist_free(nvroot); 2368 2369 /* 2370 * Attempt to create using a bad mirror. 2371 */ 2372 nvroot = make_vdev_root("/dev/bogus", NULL, NULL, 0, 0, 0, 0, 2, 1); 2373 VERIFY3U(ENOENT, ==, 2374 spa_create("ztest_bad_mirror", nvroot, NULL, NULL)); 2375 nvlist_free(nvroot); 2376 2377 /* 2378 * Attempt to create an existing pool. It shouldn't matter 2379 * what's in the nvroot; we should fail with EEXIST. 2380 */ 2381 (void) rw_rdlock(&ztest_name_lock); 2382 nvroot = make_vdev_root("/dev/bogus", NULL, NULL, 0, 0, 0, 0, 0, 1); 2383 VERIFY3U(EEXIST, ==, spa_create(zo->zo_pool, nvroot, NULL, NULL)); 2384 nvlist_free(nvroot); 2385 VERIFY3U(0, ==, spa_open(zo->zo_pool, &spa, FTAG)); 2386 VERIFY3U(EBUSY, ==, spa_destroy(zo->zo_pool)); 2387 spa_close(spa, FTAG); 2388 2389 (void) rw_unlock(&ztest_name_lock); 2390 } 2391 2392 /* ARGSUSED */ 2393 void 2394 ztest_spa_upgrade(ztest_ds_t *zd, uint64_t id) 2395 { 2396 spa_t *spa; 2397 uint64_t initial_version = SPA_VERSION_INITIAL; 2398 uint64_t version, newversion; 2399 nvlist_t *nvroot, *props; 2400 char *name; 2401 2402 VERIFY0(mutex_lock(&ztest_vdev_lock)); 2403 name = kmem_asprintf("%s_upgrade", ztest_opts.zo_pool); 2404 2405 /* 2406 * Clean up from previous runs. 2407 */ 2408 (void) spa_destroy(name); 2409 2410 nvroot = make_vdev_root(NULL, NULL, name, ztest_opts.zo_vdev_size, 0, 2411 0, ztest_opts.zo_raidz, ztest_opts.zo_mirrors, 1); 2412 2413 /* 2414 * If we're configuring a RAIDZ device then make sure that the 2415 * the initial version is capable of supporting that feature. 2416 */ 2417 switch (ztest_opts.zo_raidz_parity) { 2418 case 0: 2419 case 1: 2420 initial_version = SPA_VERSION_INITIAL; 2421 break; 2422 case 2: 2423 initial_version = SPA_VERSION_RAIDZ2; 2424 break; 2425 case 3: 2426 initial_version = SPA_VERSION_RAIDZ3; 2427 break; 2428 } 2429 2430 /* 2431 * Create a pool with a spa version that can be upgraded. Pick 2432 * a value between initial_version and SPA_VERSION_BEFORE_FEATURES. 2433 */ 2434 do { 2435 version = ztest_random_spa_version(initial_version); 2436 } while (version > SPA_VERSION_BEFORE_FEATURES); 2437 2438 props = fnvlist_alloc(); 2439 fnvlist_add_uint64(props, 2440 zpool_prop_to_name(ZPOOL_PROP_VERSION), version); 2441 VERIFY0(spa_create(name, nvroot, props, NULL)); 2442 fnvlist_free(nvroot); 2443 fnvlist_free(props); 2444 2445 VERIFY0(spa_open(name, &spa, FTAG)); 2446 VERIFY3U(spa_version(spa), ==, version); 2447 newversion = ztest_random_spa_version(version + 1); 2448 2449 if (ztest_opts.zo_verbose >= 4) { 2450 (void) printf("upgrading spa version from %llu to %llu\n", 2451 (u_longlong_t)version, (u_longlong_t)newversion); 2452 } 2453 2454 spa_upgrade(spa, newversion); 2455 VERIFY3U(spa_version(spa), >, version); 2456 VERIFY3U(spa_version(spa), ==, fnvlist_lookup_uint64(spa->spa_config, 2457 zpool_prop_to_name(ZPOOL_PROP_VERSION))); 2458 spa_close(spa, FTAG); 2459 2460 strfree(name); 2461 VERIFY0(mutex_unlock(&ztest_vdev_lock)); 2462 } 2463 2464 static vdev_t * 2465 vdev_lookup_by_path(vdev_t *vd, const char *path) 2466 { 2467 vdev_t *mvd; 2468 2469 if (vd->vdev_path != NULL && strcmp(path, vd->vdev_path) == 0) 2470 return (vd); 2471 2472 for (int c = 0; c < vd->vdev_children; c++) 2473 if ((mvd = vdev_lookup_by_path(vd->vdev_child[c], path)) != 2474 NULL) 2475 return (mvd); 2476 2477 return (NULL); 2478 } 2479 2480 /* 2481 * Find the first available hole which can be used as a top-level. 2482 */ 2483 int 2484 find_vdev_hole(spa_t *spa) 2485 { 2486 vdev_t *rvd = spa->spa_root_vdev; 2487 int c; 2488 2489 ASSERT(spa_config_held(spa, SCL_VDEV, RW_READER) == SCL_VDEV); 2490 2491 for (c = 0; c < rvd->vdev_children; c++) { 2492 vdev_t *cvd = rvd->vdev_child[c]; 2493 2494 if (cvd->vdev_ishole) 2495 break; 2496 } 2497 return (c); 2498 } 2499 2500 /* 2501 * Verify that vdev_add() works as expected. 2502 */ 2503 /* ARGSUSED */ 2504 void 2505 ztest_vdev_add_remove(ztest_ds_t *zd, uint64_t id) 2506 { 2507 ztest_shared_t *zs = ztest_shared; 2508 spa_t *spa = ztest_spa; 2509 uint64_t leaves; 2510 uint64_t guid; 2511 nvlist_t *nvroot; 2512 int error; 2513 2514 VERIFY(mutex_lock(&ztest_vdev_lock) == 0); 2515 leaves = MAX(zs->zs_mirrors + zs->zs_splits, 1) * ztest_opts.zo_raidz; 2516 2517 spa_config_enter(spa, SCL_VDEV, FTAG, RW_READER); 2518 2519 ztest_shared->zs_vdev_next_leaf = find_vdev_hole(spa) * leaves; 2520 2521 /* 2522 * If we have slogs then remove them 1/4 of the time. 2523 */ 2524 if (spa_has_slogs(spa) && ztest_random(4) == 0) { 2525 /* 2526 * Grab the guid from the head of the log class rotor. 2527 */ 2528 guid = spa_log_class(spa)->mc_rotor->mg_vd->vdev_guid; 2529 2530 spa_config_exit(spa, SCL_VDEV, FTAG); 2531 2532 /* 2533 * We have to grab the zs_name_lock as writer to 2534 * prevent a race between removing a slog (dmu_objset_find) 2535 * and destroying a dataset. Removing the slog will 2536 * grab a reference on the dataset which may cause 2537 * dmu_objset_destroy() to fail with EBUSY thus 2538 * leaving the dataset in an inconsistent state. 2539 */ 2540 VERIFY(rw_wrlock(&ztest_name_lock) == 0); 2541 error = spa_vdev_remove(spa, guid, B_FALSE); 2542 VERIFY(rw_unlock(&ztest_name_lock) == 0); 2543 2544 if (error && error != EEXIST) 2545 fatal(0, "spa_vdev_remove() = %d", error); 2546 } else { 2547 spa_config_exit(spa, SCL_VDEV, FTAG); 2548 2549 /* 2550 * Make 1/4 of the devices be log devices. 2551 */ 2552 nvroot = make_vdev_root(NULL, NULL, NULL, 2553 ztest_opts.zo_vdev_size, 0, 2554 ztest_random(4) == 0, ztest_opts.zo_raidz, 2555 zs->zs_mirrors, 1); 2556 2557 error = spa_vdev_add(spa, nvroot); 2558 nvlist_free(nvroot); 2559 2560 if (error == ENOSPC) 2561 ztest_record_enospc("spa_vdev_add"); 2562 else if (error != 0) 2563 fatal(0, "spa_vdev_add() = %d", error); 2564 } 2565 2566 VERIFY(mutex_unlock(&ztest_vdev_lock) == 0); 2567 } 2568 2569 /* 2570 * Verify that adding/removing aux devices (l2arc, hot spare) works as expected. 2571 */ 2572 /* ARGSUSED */ 2573 void 2574 ztest_vdev_aux_add_remove(ztest_ds_t *zd, uint64_t id) 2575 { 2576 ztest_shared_t *zs = ztest_shared; 2577 spa_t *spa = ztest_spa; 2578 vdev_t *rvd = spa->spa_root_vdev; 2579 spa_aux_vdev_t *sav; 2580 char *aux; 2581 uint64_t guid = 0; 2582 int error; 2583 2584 if (ztest_random(2) == 0) { 2585 sav = &spa->spa_spares; 2586 aux = ZPOOL_CONFIG_SPARES; 2587 } else { 2588 sav = &spa->spa_l2cache; 2589 aux = ZPOOL_CONFIG_L2CACHE; 2590 } 2591 2592 VERIFY(mutex_lock(&ztest_vdev_lock) == 0); 2593 2594 spa_config_enter(spa, SCL_VDEV, FTAG, RW_READER); 2595 2596 if (sav->sav_count != 0 && ztest_random(4) == 0) { 2597 /* 2598 * Pick a random device to remove. 2599 */ 2600 guid = sav->sav_vdevs[ztest_random(sav->sav_count)]->vdev_guid; 2601 } else { 2602 /* 2603 * Find an unused device we can add. 2604 */ 2605 zs->zs_vdev_aux = 0; 2606 for (;;) { 2607 char path[MAXPATHLEN]; 2608 int c; 2609 (void) snprintf(path, sizeof (path), ztest_aux_template, 2610 ztest_opts.zo_dir, ztest_opts.zo_pool, aux, 2611 zs->zs_vdev_aux); 2612 for (c = 0; c < sav->sav_count; c++) 2613 if (strcmp(sav->sav_vdevs[c]->vdev_path, 2614 path) == 0) 2615 break; 2616 if (c == sav->sav_count && 2617 vdev_lookup_by_path(rvd, path) == NULL) 2618 break; 2619 zs->zs_vdev_aux++; 2620 } 2621 } 2622 2623 spa_config_exit(spa, SCL_VDEV, FTAG); 2624 2625 if (guid == 0) { 2626 /* 2627 * Add a new device. 2628 */ 2629 nvlist_t *nvroot = make_vdev_root(NULL, aux, NULL, 2630 (ztest_opts.zo_vdev_size * 5) / 4, 0, 0, 0, 0, 1); 2631 error = spa_vdev_add(spa, nvroot); 2632 if (error != 0) 2633 fatal(0, "spa_vdev_add(%p) = %d", nvroot, error); 2634 nvlist_free(nvroot); 2635 } else { 2636 /* 2637 * Remove an existing device. Sometimes, dirty its 2638 * vdev state first to make sure we handle removal 2639 * of devices that have pending state changes. 2640 */ 2641 if (ztest_random(2) == 0) 2642 (void) vdev_online(spa, guid, 0, NULL); 2643 2644 error = spa_vdev_remove(spa, guid, B_FALSE); 2645 if (error != 0 && error != EBUSY) 2646 fatal(0, "spa_vdev_remove(%llu) = %d", guid, error); 2647 } 2648 2649 VERIFY(mutex_unlock(&ztest_vdev_lock) == 0); 2650 } 2651 2652 /* 2653 * split a pool if it has mirror tlvdevs 2654 */ 2655 /* ARGSUSED */ 2656 void 2657 ztest_split_pool(ztest_ds_t *zd, uint64_t id) 2658 { 2659 ztest_shared_t *zs = ztest_shared; 2660 spa_t *spa = ztest_spa; 2661 vdev_t *rvd = spa->spa_root_vdev; 2662 nvlist_t *tree, **child, *config, *split, **schild; 2663 uint_t c, children, schildren = 0, lastlogid = 0; 2664 int error = 0; 2665 2666 VERIFY(mutex_lock(&ztest_vdev_lock) == 0); 2667 2668 /* ensure we have a useable config; mirrors of raidz aren't supported */ 2669 if (zs->zs_mirrors < 3 || ztest_opts.zo_raidz > 1) { 2670 VERIFY(mutex_unlock(&ztest_vdev_lock) == 0); 2671 return; 2672 } 2673 2674 /* clean up the old pool, if any */ 2675 (void) spa_destroy("splitp"); 2676 2677 spa_config_enter(spa, SCL_VDEV, FTAG, RW_READER); 2678 2679 /* generate a config from the existing config */ 2680 mutex_enter(&spa->spa_props_lock); 2681 VERIFY(nvlist_lookup_nvlist(spa->spa_config, ZPOOL_CONFIG_VDEV_TREE, 2682 &tree) == 0); 2683 mutex_exit(&spa->spa_props_lock); 2684 2685 VERIFY(nvlist_lookup_nvlist_array(tree, ZPOOL_CONFIG_CHILDREN, &child, 2686 &children) == 0); 2687 2688 schild = malloc(rvd->vdev_children * sizeof (nvlist_t *)); 2689 for (c = 0; c < children; c++) { 2690 vdev_t *tvd = rvd->vdev_child[c]; 2691 nvlist_t **mchild; 2692 uint_t mchildren; 2693 2694 if (tvd->vdev_islog || tvd->vdev_ops == &vdev_hole_ops) { 2695 VERIFY(nvlist_alloc(&schild[schildren], NV_UNIQUE_NAME, 2696 0) == 0); 2697 VERIFY(nvlist_add_string(schild[schildren], 2698 ZPOOL_CONFIG_TYPE, VDEV_TYPE_HOLE) == 0); 2699 VERIFY(nvlist_add_uint64(schild[schildren], 2700 ZPOOL_CONFIG_IS_HOLE, 1) == 0); 2701 if (lastlogid == 0) 2702 lastlogid = schildren; 2703 ++schildren; 2704 continue; 2705 } 2706 lastlogid = 0; 2707 VERIFY(nvlist_lookup_nvlist_array(child[c], 2708 ZPOOL_CONFIG_CHILDREN, &mchild, &mchildren) == 0); 2709 VERIFY(nvlist_dup(mchild[0], &schild[schildren++], 0) == 0); 2710 } 2711 2712 /* OK, create a config that can be used to split */ 2713 VERIFY(nvlist_alloc(&split, NV_UNIQUE_NAME, 0) == 0); 2714 VERIFY(nvlist_add_string(split, ZPOOL_CONFIG_TYPE, 2715 VDEV_TYPE_ROOT) == 0); 2716 VERIFY(nvlist_add_nvlist_array(split, ZPOOL_CONFIG_CHILDREN, schild, 2717 lastlogid != 0 ? lastlogid : schildren) == 0); 2718 2719 VERIFY(nvlist_alloc(&config, NV_UNIQUE_NAME, 0) == 0); 2720 VERIFY(nvlist_add_nvlist(config, ZPOOL_CONFIG_VDEV_TREE, split) == 0); 2721 2722 for (c = 0; c < schildren; c++) 2723 nvlist_free(schild[c]); 2724 free(schild); 2725 nvlist_free(split); 2726 2727 spa_config_exit(spa, SCL_VDEV, FTAG); 2728 2729 (void) rw_wrlock(&ztest_name_lock); 2730 error = spa_vdev_split_mirror(spa, "splitp", config, NULL, B_FALSE); 2731 (void) rw_unlock(&ztest_name_lock); 2732 2733 nvlist_free(config); 2734 2735 if (error == 0) { 2736 (void) printf("successful split - results:\n"); 2737 mutex_enter(&spa_namespace_lock); 2738 show_pool_stats(spa); 2739 show_pool_stats(spa_lookup("splitp")); 2740 mutex_exit(&spa_namespace_lock); 2741 ++zs->zs_splits; 2742 --zs->zs_mirrors; 2743 } 2744 VERIFY(mutex_unlock(&ztest_vdev_lock) == 0); 2745 2746 } 2747 2748 /* 2749 * Verify that we can attach and detach devices. 2750 */ 2751 /* ARGSUSED */ 2752 void 2753 ztest_vdev_attach_detach(ztest_ds_t *zd, uint64_t id) 2754 { 2755 ztest_shared_t *zs = ztest_shared; 2756 spa_t *spa = ztest_spa; 2757 spa_aux_vdev_t *sav = &spa->spa_spares; 2758 vdev_t *rvd = spa->spa_root_vdev; 2759 vdev_t *oldvd, *newvd, *pvd; 2760 nvlist_t *root; 2761 uint64_t leaves; 2762 uint64_t leaf, top; 2763 uint64_t ashift = ztest_get_ashift(); 2764 uint64_t oldguid, pguid; 2765 uint64_t oldsize, newsize; 2766 char oldpath[MAXPATHLEN], newpath[MAXPATHLEN]; 2767 int replacing; 2768 int oldvd_has_siblings = B_FALSE; 2769 int newvd_is_spare = B_FALSE; 2770 int oldvd_is_log; 2771 int error, expected_error; 2772 2773 VERIFY(mutex_lock(&ztest_vdev_lock) == 0); 2774 leaves = MAX(zs->zs_mirrors, 1) * ztest_opts.zo_raidz; 2775 2776 spa_config_enter(spa, SCL_VDEV, FTAG, RW_READER); 2777 2778 /* 2779 * Decide whether to do an attach or a replace. 2780 */ 2781 replacing = ztest_random(2); 2782 2783 /* 2784 * Pick a random top-level vdev. 2785 */ 2786 top = ztest_random_vdev_top(spa, B_TRUE); 2787 2788 /* 2789 * Pick a random leaf within it. 2790 */ 2791 leaf = ztest_random(leaves); 2792 2793 /* 2794 * Locate this vdev. 2795 */ 2796 oldvd = rvd->vdev_child[top]; 2797 if (zs->zs_mirrors >= 1) { 2798 ASSERT(oldvd->vdev_ops == &vdev_mirror_ops); 2799 ASSERT(oldvd->vdev_children >= zs->zs_mirrors); 2800 oldvd = oldvd->vdev_child[leaf / ztest_opts.zo_raidz]; 2801 } 2802 if (ztest_opts.zo_raidz > 1) { 2803 ASSERT(oldvd->vdev_ops == &vdev_raidz_ops); 2804 ASSERT(oldvd->vdev_children == ztest_opts.zo_raidz); 2805 oldvd = oldvd->vdev_child[leaf % ztest_opts.zo_raidz]; 2806 } 2807 2808 /* 2809 * If we're already doing an attach or replace, oldvd may be a 2810 * mirror vdev -- in which case, pick a random child. 2811 */ 2812 while (oldvd->vdev_children != 0) { 2813 oldvd_has_siblings = B_TRUE; 2814 ASSERT(oldvd->vdev_children >= 2); 2815 oldvd = oldvd->vdev_child[ztest_random(oldvd->vdev_children)]; 2816 } 2817 2818 oldguid = oldvd->vdev_guid; 2819 oldsize = vdev_get_min_asize(oldvd); 2820 oldvd_is_log = oldvd->vdev_top->vdev_islog; 2821 (void) strcpy(oldpath, oldvd->vdev_path); 2822 pvd = oldvd->vdev_parent; 2823 pguid = pvd->vdev_guid; 2824 2825 /* 2826 * If oldvd has siblings, then half of the time, detach it. 2827 */ 2828 if (oldvd_has_siblings && ztest_random(2) == 0) { 2829 spa_config_exit(spa, SCL_VDEV, FTAG); 2830 error = spa_vdev_detach(spa, oldguid, pguid, B_FALSE); 2831 if (error != 0 && error != ENODEV && error != EBUSY && 2832 error != ENOTSUP) 2833 fatal(0, "detach (%s) returned %d", oldpath, error); 2834 VERIFY(mutex_unlock(&ztest_vdev_lock) == 0); 2835 return; 2836 } 2837 2838 /* 2839 * For the new vdev, choose with equal probability between the two 2840 * standard paths (ending in either 'a' or 'b') or a random hot spare. 2841 */ 2842 if (sav->sav_count != 0 && ztest_random(3) == 0) { 2843 newvd = sav->sav_vdevs[ztest_random(sav->sav_count)]; 2844 newvd_is_spare = B_TRUE; 2845 (void) strcpy(newpath, newvd->vdev_path); 2846 } else { 2847 (void) snprintf(newpath, sizeof (newpath), ztest_dev_template, 2848 ztest_opts.zo_dir, ztest_opts.zo_pool, 2849 top * leaves + leaf); 2850 if (ztest_random(2) == 0) 2851 newpath[strlen(newpath) - 1] = 'b'; 2852 newvd = vdev_lookup_by_path(rvd, newpath); 2853 } 2854 2855 if (newvd) { 2856 newsize = vdev_get_min_asize(newvd); 2857 } else { 2858 /* 2859 * Make newsize a little bigger or smaller than oldsize. 2860 * If it's smaller, the attach should fail. 2861 * If it's larger, and we're doing a replace, 2862 * we should get dynamic LUN growth when we're done. 2863 */ 2864 newsize = 10 * oldsize / (9 + ztest_random(3)); 2865 } 2866 2867 /* 2868 * If pvd is not a mirror or root, the attach should fail with ENOTSUP, 2869 * unless it's a replace; in that case any non-replacing parent is OK. 2870 * 2871 * If newvd is already part of the pool, it should fail with EBUSY. 2872 * 2873 * If newvd is too small, it should fail with EOVERFLOW. 2874 */ 2875 if (pvd->vdev_ops != &vdev_mirror_ops && 2876 pvd->vdev_ops != &vdev_root_ops && (!replacing || 2877 pvd->vdev_ops == &vdev_replacing_ops || 2878 pvd->vdev_ops == &vdev_spare_ops)) 2879 expected_error = ENOTSUP; 2880 else if (newvd_is_spare && (!replacing || oldvd_is_log)) 2881 expected_error = ENOTSUP; 2882 else if (newvd == oldvd) 2883 expected_error = replacing ? 0 : EBUSY; 2884 else if (vdev_lookup_by_path(rvd, newpath) != NULL) 2885 expected_error = EBUSY; 2886 else if (newsize < oldsize) 2887 expected_error = EOVERFLOW; 2888 else if (ashift > oldvd->vdev_top->vdev_ashift) 2889 expected_error = EDOM; 2890 else 2891 expected_error = 0; 2892 2893 spa_config_exit(spa, SCL_VDEV, FTAG); 2894 2895 /* 2896 * Build the nvlist describing newpath. 2897 */ 2898 root = make_vdev_root(newpath, NULL, NULL, newvd == NULL ? newsize : 0, 2899 ashift, 0, 0, 0, 1); 2900 2901 error = spa_vdev_attach(spa, oldguid, root, replacing); 2902 2903 nvlist_free(root); 2904 2905 /* 2906 * If our parent was the replacing vdev, but the replace completed, 2907 * then instead of failing with ENOTSUP we may either succeed, 2908 * fail with ENODEV, or fail with EOVERFLOW. 2909 */ 2910 if (expected_error == ENOTSUP && 2911 (error == 0 || error == ENODEV || error == EOVERFLOW)) 2912 expected_error = error; 2913 2914 /* 2915 * If someone grew the LUN, the replacement may be too small. 2916 */ 2917 if (error == EOVERFLOW || error == EBUSY) 2918 expected_error = error; 2919 2920 /* XXX workaround 6690467 */ 2921 if (error != expected_error && expected_error != EBUSY) { 2922 fatal(0, "attach (%s %llu, %s %llu, %d) " 2923 "returned %d, expected %d", 2924 oldpath, oldsize, newpath, 2925 newsize, replacing, error, expected_error); 2926 } 2927 2928 VERIFY(mutex_unlock(&ztest_vdev_lock) == 0); 2929 } 2930 2931 /* 2932 * Callback function which expands the physical size of the vdev. 2933 */ 2934 vdev_t * 2935 grow_vdev(vdev_t *vd, void *arg) 2936 { 2937 spa_t *spa = vd->vdev_spa; 2938 size_t *newsize = arg; 2939 size_t fsize; 2940 int fd; 2941 2942 ASSERT(spa_config_held(spa, SCL_STATE, RW_READER) == SCL_STATE); 2943 ASSERT(vd->vdev_ops->vdev_op_leaf); 2944 2945 if ((fd = open(vd->vdev_path, O_RDWR)) == -1) 2946 return (vd); 2947 2948 fsize = lseek(fd, 0, SEEK_END); 2949 (void) ftruncate(fd, *newsize); 2950 2951 if (ztest_opts.zo_verbose >= 6) { 2952 (void) printf("%s grew from %lu to %lu bytes\n", 2953 vd->vdev_path, (ulong_t)fsize, (ulong_t)*newsize); 2954 } 2955 (void) close(fd); 2956 return (NULL); 2957 } 2958 2959 /* 2960 * Callback function which expands a given vdev by calling vdev_online(). 2961 */ 2962 /* ARGSUSED */ 2963 vdev_t * 2964 online_vdev(vdev_t *vd, void *arg) 2965 { 2966 spa_t *spa = vd->vdev_spa; 2967 vdev_t *tvd = vd->vdev_top; 2968 uint64_t guid = vd->vdev_guid; 2969 uint64_t generation = spa->spa_config_generation + 1; 2970 vdev_state_t newstate = VDEV_STATE_UNKNOWN; 2971 int error; 2972 2973 ASSERT(spa_config_held(spa, SCL_STATE, RW_READER) == SCL_STATE); 2974 ASSERT(vd->vdev_ops->vdev_op_leaf); 2975 2976 /* Calling vdev_online will initialize the new metaslabs */ 2977 spa_config_exit(spa, SCL_STATE, spa); 2978 error = vdev_online(spa, guid, ZFS_ONLINE_EXPAND, &newstate); 2979 spa_config_enter(spa, SCL_STATE, spa, RW_READER); 2980 2981 /* 2982 * If vdev_online returned an error or the underlying vdev_open 2983 * failed then we abort the expand. The only way to know that 2984 * vdev_open fails is by checking the returned newstate. 2985 */ 2986 if (error || newstate != VDEV_STATE_HEALTHY) { 2987 if (ztest_opts.zo_verbose >= 5) { 2988 (void) printf("Unable to expand vdev, state %llu, " 2989 "error %d\n", (u_longlong_t)newstate, error); 2990 } 2991 return (vd); 2992 } 2993 ASSERT3U(newstate, ==, VDEV_STATE_HEALTHY); 2994 2995 /* 2996 * Since we dropped the lock we need to ensure that we're 2997 * still talking to the original vdev. It's possible this 2998 * vdev may have been detached/replaced while we were 2999 * trying to online it. 3000 */ 3001 if (generation != spa->spa_config_generation) { 3002 if (ztest_opts.zo_verbose >= 5) { 3003 (void) printf("vdev configuration has changed, " 3004 "guid %llu, state %llu, expected gen %llu, " 3005 "got gen %llu\n", 3006 (u_longlong_t)guid, 3007 (u_longlong_t)tvd->vdev_state, 3008 (u_longlong_t)generation, 3009 (u_longlong_t)spa->spa_config_generation); 3010 } 3011 return (vd); 3012 } 3013 return (NULL); 3014 } 3015 3016 /* 3017 * Traverse the vdev tree calling the supplied function. 3018 * We continue to walk the tree until we either have walked all 3019 * children or we receive a non-NULL return from the callback. 3020 * If a NULL callback is passed, then we just return back the first 3021 * leaf vdev we encounter. 3022 */ 3023 vdev_t * 3024 vdev_walk_tree(vdev_t *vd, vdev_t *(*func)(vdev_t *, void *), void *arg) 3025 { 3026 if (vd->vdev_ops->vdev_op_leaf) { 3027 if (func == NULL) 3028 return (vd); 3029 else 3030 return (func(vd, arg)); 3031 } 3032 3033 for (uint_t c = 0; c < vd->vdev_children; c++) { 3034 vdev_t *cvd = vd->vdev_child[c]; 3035 if ((cvd = vdev_walk_tree(cvd, func, arg)) != NULL) 3036 return (cvd); 3037 } 3038 return (NULL); 3039 } 3040 3041 /* 3042 * Verify that dynamic LUN growth works as expected. 3043 */ 3044 /* ARGSUSED */ 3045 void 3046 ztest_vdev_LUN_growth(ztest_ds_t *zd, uint64_t id) 3047 { 3048 spa_t *spa = ztest_spa; 3049 vdev_t *vd, *tvd; 3050 metaslab_class_t *mc; 3051 metaslab_group_t *mg; 3052 size_t psize, newsize; 3053 uint64_t top; 3054 uint64_t old_class_space, new_class_space, old_ms_count, new_ms_count; 3055 3056 VERIFY(mutex_lock(&ztest_vdev_lock) == 0); 3057 spa_config_enter(spa, SCL_STATE, spa, RW_READER); 3058 3059 top = ztest_random_vdev_top(spa, B_TRUE); 3060 3061 tvd = spa->spa_root_vdev->vdev_child[top]; 3062 mg = tvd->vdev_mg; 3063 mc = mg->mg_class; 3064 old_ms_count = tvd->vdev_ms_count; 3065 old_class_space = metaslab_class_get_space(mc); 3066 3067 /* 3068 * Determine the size of the first leaf vdev associated with 3069 * our top-level device. 3070 */ 3071 vd = vdev_walk_tree(tvd, NULL, NULL); 3072 ASSERT3P(vd, !=, NULL); 3073 ASSERT(vd->vdev_ops->vdev_op_leaf); 3074 3075 psize = vd->vdev_psize; 3076 3077 /* 3078 * We only try to expand the vdev if it's healthy, less than 4x its 3079 * original size, and it has a valid psize. 3080 */ 3081 if (tvd->vdev_state != VDEV_STATE_HEALTHY || 3082 psize == 0 || psize >= 4 * ztest_opts.zo_vdev_size) { 3083 spa_config_exit(spa, SCL_STATE, spa); 3084 VERIFY(mutex_unlock(&ztest_vdev_lock) == 0); 3085 return; 3086 } 3087 ASSERT(psize > 0); 3088 newsize = psize + psize / 8; 3089 ASSERT3U(newsize, >, psize); 3090 3091 if (ztest_opts.zo_verbose >= 6) { 3092 (void) printf("Expanding LUN %s from %lu to %lu\n", 3093 vd->vdev_path, (ulong_t)psize, (ulong_t)newsize); 3094 } 3095 3096 /* 3097 * Growing the vdev is a two step process: 3098 * 1). expand the physical size (i.e. relabel) 3099 * 2). online the vdev to create the new metaslabs 3100 */ 3101 if (vdev_walk_tree(tvd, grow_vdev, &newsize) != NULL || 3102 vdev_walk_tree(tvd, online_vdev, NULL) != NULL || 3103 tvd->vdev_state != VDEV_STATE_HEALTHY) { 3104 if (ztest_opts.zo_verbose >= 5) { 3105 (void) printf("Could not expand LUN because " 3106 "the vdev configuration changed.\n"); 3107 } 3108 spa_config_exit(spa, SCL_STATE, spa); 3109 VERIFY(mutex_unlock(&ztest_vdev_lock) == 0); 3110 return; 3111 } 3112 3113 spa_config_exit(spa, SCL_STATE, spa); 3114 3115 /* 3116 * Expanding the LUN will update the config asynchronously, 3117 * thus we must wait for the async thread to complete any 3118 * pending tasks before proceeding. 3119 */ 3120 for (;;) { 3121 boolean_t done; 3122 mutex_enter(&spa->spa_async_lock); 3123 done = (spa->spa_async_thread == NULL && !spa->spa_async_tasks); 3124 mutex_exit(&spa->spa_async_lock); 3125 if (done) 3126 break; 3127 txg_wait_synced(spa_get_dsl(spa), 0); 3128 (void) poll(NULL, 0, 100); 3129 } 3130 3131 spa_config_enter(spa, SCL_STATE, spa, RW_READER); 3132 3133 tvd = spa->spa_root_vdev->vdev_child[top]; 3134 new_ms_count = tvd->vdev_ms_count; 3135 new_class_space = metaslab_class_get_space(mc); 3136 3137 if (tvd->vdev_mg != mg || mg->mg_class != mc) { 3138 if (ztest_opts.zo_verbose >= 5) { 3139 (void) printf("Could not verify LUN expansion due to " 3140 "intervening vdev offline or remove.\n"); 3141 } 3142 spa_config_exit(spa, SCL_STATE, spa); 3143 VERIFY(mutex_unlock(&ztest_vdev_lock) == 0); 3144 return; 3145 } 3146 3147 /* 3148 * Make sure we were able to grow the vdev. 3149 */ 3150 if (new_ms_count <= old_ms_count) 3151 fatal(0, "LUN expansion failed: ms_count %llu <= %llu\n", 3152 old_ms_count, new_ms_count); 3153 3154 /* 3155 * Make sure we were able to grow the pool. 3156 */ 3157 if (new_class_space <= old_class_space) 3158 fatal(0, "LUN expansion failed: class_space %llu <= %llu\n", 3159 old_class_space, new_class_space); 3160 3161 if (ztest_opts.zo_verbose >= 5) { 3162 char oldnumbuf[NN_NUMBUF_SZ], newnumbuf[NN_NUMBUF_SZ]; 3163 3164 nicenum(old_class_space, oldnumbuf, sizeof (oldnumbuf)); 3165 nicenum(new_class_space, newnumbuf, sizeof (newnumbuf)); 3166 (void) printf("%s grew from %s to %s\n", 3167 spa->spa_name, oldnumbuf, newnumbuf); 3168 } 3169 3170 spa_config_exit(spa, SCL_STATE, spa); 3171 VERIFY(mutex_unlock(&ztest_vdev_lock) == 0); 3172 } 3173 3174 /* 3175 * Verify that dmu_objset_{create,destroy,open,close} work as expected. 3176 */ 3177 /* ARGSUSED */ 3178 static void 3179 ztest_objset_create_cb(objset_t *os, void *arg, cred_t *cr, dmu_tx_t *tx) 3180 { 3181 /* 3182 * Create the objects common to all ztest datasets. 3183 */ 3184 VERIFY(zap_create_claim(os, ZTEST_DIROBJ, 3185 DMU_OT_ZAP_OTHER, DMU_OT_NONE, 0, tx) == 0); 3186 } 3187 3188 static int 3189 ztest_dataset_create(char *dsname) 3190 { 3191 uint64_t zilset = ztest_random(100); 3192 int err = dmu_objset_create(dsname, DMU_OST_OTHER, 0, 3193 ztest_objset_create_cb, NULL); 3194 3195 if (err || zilset < 80) 3196 return (err); 3197 3198 if (ztest_opts.zo_verbose >= 6) 3199 (void) printf("Setting dataset %s to sync always\n", dsname); 3200 return (ztest_dsl_prop_set_uint64(dsname, ZFS_PROP_SYNC, 3201 ZFS_SYNC_ALWAYS, B_FALSE)); 3202 } 3203 3204 /* ARGSUSED */ 3205 static int 3206 ztest_objset_destroy_cb(const char *name, void *arg) 3207 { 3208 objset_t *os; 3209 dmu_object_info_t doi; 3210 int error; 3211 3212 /* 3213 * Verify that the dataset contains a directory object. 3214 */ 3215 VERIFY0(dmu_objset_own(name, DMU_OST_OTHER, B_TRUE, FTAG, &os)); 3216 error = dmu_object_info(os, ZTEST_DIROBJ, &doi); 3217 if (error != ENOENT) { 3218 /* We could have crashed in the middle of destroying it */ 3219 ASSERT0(error); 3220 ASSERT3U(doi.doi_type, ==, DMU_OT_ZAP_OTHER); 3221 ASSERT3S(doi.doi_physical_blocks_512, >=, 0); 3222 } 3223 dmu_objset_disown(os, FTAG); 3224 3225 /* 3226 * Destroy the dataset. 3227 */ 3228 if (strchr(name, '@') != NULL) { 3229 VERIFY0(dsl_destroy_snapshot(name, B_TRUE)); 3230 } else { 3231 error = dsl_destroy_head(name); 3232 /* There could be a hold on this dataset */ 3233 if (error != EBUSY) 3234 ASSERT0(error); 3235 } 3236 return (0); 3237 } 3238 3239 static boolean_t 3240 ztest_snapshot_create(char *osname, uint64_t id) 3241 { 3242 char snapname[ZFS_MAX_DATASET_NAME_LEN]; 3243 int error; 3244 3245 (void) snprintf(snapname, sizeof (snapname), "%llu", (u_longlong_t)id); 3246 3247 error = dmu_objset_snapshot_one(osname, snapname); 3248 if (error == ENOSPC) { 3249 ztest_record_enospc(FTAG); 3250 return (B_FALSE); 3251 } 3252 if (error != 0 && error != EEXIST) { 3253 fatal(0, "ztest_snapshot_create(%s@%s) = %d", osname, 3254 snapname, error); 3255 } 3256 return (B_TRUE); 3257 } 3258 3259 static boolean_t 3260 ztest_snapshot_destroy(char *osname, uint64_t id) 3261 { 3262 char snapname[ZFS_MAX_DATASET_NAME_LEN]; 3263 int error; 3264 3265 (void) snprintf(snapname, sizeof (snapname), "%s@%llu", osname, 3266 (u_longlong_t)id); 3267 3268 error = dsl_destroy_snapshot(snapname, B_FALSE); 3269 if (error != 0 && error != ENOENT) 3270 fatal(0, "ztest_snapshot_destroy(%s) = %d", snapname, error); 3271 return (B_TRUE); 3272 } 3273 3274 /* ARGSUSED */ 3275 void 3276 ztest_dmu_objset_create_destroy(ztest_ds_t *zd, uint64_t id) 3277 { 3278 ztest_ds_t zdtmp; 3279 int iters; 3280 int error; 3281 objset_t *os, *os2; 3282 char name[ZFS_MAX_DATASET_NAME_LEN]; 3283 zilog_t *zilog; 3284 3285 (void) rw_rdlock(&ztest_name_lock); 3286 3287 (void) snprintf(name, sizeof (name), "%s/temp_%llu", 3288 ztest_opts.zo_pool, (u_longlong_t)id); 3289 3290 /* 3291 * If this dataset exists from a previous run, process its replay log 3292 * half of the time. If we don't replay it, then dmu_objset_destroy() 3293 * (invoked from ztest_objset_destroy_cb()) should just throw it away. 3294 */ 3295 if (ztest_random(2) == 0 && 3296 dmu_objset_own(name, DMU_OST_OTHER, B_FALSE, FTAG, &os) == 0) { 3297 ztest_zd_init(&zdtmp, NULL, os); 3298 zil_replay(os, &zdtmp, ztest_replay_vector); 3299 ztest_zd_fini(&zdtmp); 3300 dmu_objset_disown(os, FTAG); 3301 } 3302 3303 /* 3304 * There may be an old instance of the dataset we're about to 3305 * create lying around from a previous run. If so, destroy it 3306 * and all of its snapshots. 3307 */ 3308 (void) dmu_objset_find(name, ztest_objset_destroy_cb, NULL, 3309 DS_FIND_CHILDREN | DS_FIND_SNAPSHOTS); 3310 3311 /* 3312 * Verify that the destroyed dataset is no longer in the namespace. 3313 */ 3314 VERIFY3U(ENOENT, ==, dmu_objset_own(name, DMU_OST_OTHER, B_TRUE, 3315 FTAG, &os)); 3316 3317 /* 3318 * Verify that we can create a new dataset. 3319 */ 3320 error = ztest_dataset_create(name); 3321 if (error) { 3322 if (error == ENOSPC) { 3323 ztest_record_enospc(FTAG); 3324 (void) rw_unlock(&ztest_name_lock); 3325 return; 3326 } 3327 fatal(0, "dmu_objset_create(%s) = %d", name, error); 3328 } 3329 3330 VERIFY0(dmu_objset_own(name, DMU_OST_OTHER, B_FALSE, FTAG, &os)); 3331 3332 ztest_zd_init(&zdtmp, NULL, os); 3333 3334 /* 3335 * Open the intent log for it. 3336 */ 3337 zilog = zil_open(os, ztest_get_data); 3338 3339 /* 3340 * Put some objects in there, do a little I/O to them, 3341 * and randomly take a couple of snapshots along the way. 3342 */ 3343 iters = ztest_random(5); 3344 for (int i = 0; i < iters; i++) { 3345 ztest_dmu_object_alloc_free(&zdtmp, id); 3346 if (ztest_random(iters) == 0) 3347 (void) ztest_snapshot_create(name, i); 3348 } 3349 3350 /* 3351 * Verify that we cannot create an existing dataset. 3352 */ 3353 VERIFY3U(EEXIST, ==, 3354 dmu_objset_create(name, DMU_OST_OTHER, 0, NULL, NULL)); 3355 3356 /* 3357 * Verify that we can hold an objset that is also owned. 3358 */ 3359 VERIFY3U(0, ==, dmu_objset_hold(name, FTAG, &os2)); 3360 dmu_objset_rele(os2, FTAG); 3361 3362 /* 3363 * Verify that we cannot own an objset that is already owned. 3364 */ 3365 VERIFY3U(EBUSY, ==, 3366 dmu_objset_own(name, DMU_OST_OTHER, B_FALSE, FTAG, &os2)); 3367 3368 zil_close(zilog); 3369 dmu_objset_disown(os, FTAG); 3370 ztest_zd_fini(&zdtmp); 3371 3372 (void) rw_unlock(&ztest_name_lock); 3373 } 3374 3375 /* 3376 * Verify that dmu_snapshot_{create,destroy,open,close} work as expected. 3377 */ 3378 void 3379 ztest_dmu_snapshot_create_destroy(ztest_ds_t *zd, uint64_t id) 3380 { 3381 (void) rw_rdlock(&ztest_name_lock); 3382 (void) ztest_snapshot_destroy(zd->zd_name, id); 3383 (void) ztest_snapshot_create(zd->zd_name, id); 3384 (void) rw_unlock(&ztest_name_lock); 3385 } 3386 3387 /* 3388 * Cleanup non-standard snapshots and clones. 3389 */ 3390 void 3391 ztest_dsl_dataset_cleanup(char *osname, uint64_t id) 3392 { 3393 char snap1name[ZFS_MAX_DATASET_NAME_LEN]; 3394 char clone1name[ZFS_MAX_DATASET_NAME_LEN]; 3395 char snap2name[ZFS_MAX_DATASET_NAME_LEN]; 3396 char clone2name[ZFS_MAX_DATASET_NAME_LEN]; 3397 char snap3name[ZFS_MAX_DATASET_NAME_LEN]; 3398 int error; 3399 3400 (void) snprintf(snap1name, sizeof (snap1name), 3401 "%s@s1_%llu", osname, id); 3402 (void) snprintf(clone1name, sizeof (clone1name), 3403 "%s/c1_%llu", osname, id); 3404 (void) snprintf(snap2name, sizeof (snap2name), 3405 "%s@s2_%llu", clone1name, id); 3406 (void) snprintf(clone2name, sizeof (clone2name), 3407 "%s/c2_%llu", osname, id); 3408 (void) snprintf(snap3name, sizeof (snap3name), 3409 "%s@s3_%llu", clone1name, id); 3410 3411 error = dsl_destroy_head(clone2name); 3412 if (error && error != ENOENT) 3413 fatal(0, "dsl_destroy_head(%s) = %d", clone2name, error); 3414 error = dsl_destroy_snapshot(snap3name, B_FALSE); 3415 if (error && error != ENOENT) 3416 fatal(0, "dsl_destroy_snapshot(%s) = %d", snap3name, error); 3417 error = dsl_destroy_snapshot(snap2name, B_FALSE); 3418 if (error && error != ENOENT) 3419 fatal(0, "dsl_destroy_snapshot(%s) = %d", snap2name, error); 3420 error = dsl_destroy_head(clone1name); 3421 if (error && error != ENOENT) 3422 fatal(0, "dsl_destroy_head(%s) = %d", clone1name, error); 3423 error = dsl_destroy_snapshot(snap1name, B_FALSE); 3424 if (error && error != ENOENT) 3425 fatal(0, "dsl_destroy_snapshot(%s) = %d", snap1name, error); 3426 } 3427 3428 /* 3429 * Verify dsl_dataset_promote handles EBUSY 3430 */ 3431 void 3432 ztest_dsl_dataset_promote_busy(ztest_ds_t *zd, uint64_t id) 3433 { 3434 objset_t *os; 3435 char snap1name[ZFS_MAX_DATASET_NAME_LEN]; 3436 char clone1name[ZFS_MAX_DATASET_NAME_LEN]; 3437 char snap2name[ZFS_MAX_DATASET_NAME_LEN]; 3438 char clone2name[ZFS_MAX_DATASET_NAME_LEN]; 3439 char snap3name[ZFS_MAX_DATASET_NAME_LEN]; 3440 char *osname = zd->zd_name; 3441 int error; 3442 3443 (void) rw_rdlock(&ztest_name_lock); 3444 3445 ztest_dsl_dataset_cleanup(osname, id); 3446 3447 (void) snprintf(snap1name, sizeof (snap1name), 3448 "%s@s1_%llu", osname, id); 3449 (void) snprintf(clone1name, sizeof (clone1name), 3450 "%s/c1_%llu", osname, id); 3451 (void) snprintf(snap2name, sizeof (snap2name), 3452 "%s@s2_%llu", clone1name, id); 3453 (void) snprintf(clone2name, sizeof (clone2name), 3454 "%s/c2_%llu", osname, id); 3455 (void) snprintf(snap3name, sizeof (snap3name), 3456 "%s@s3_%llu", clone1name, id); 3457 3458 error = dmu_objset_snapshot_one(osname, strchr(snap1name, '@') + 1); 3459 if (error && error != EEXIST) { 3460 if (error == ENOSPC) { 3461 ztest_record_enospc(FTAG); 3462 goto out; 3463 } 3464 fatal(0, "dmu_take_snapshot(%s) = %d", snap1name, error); 3465 } 3466 3467 error = dmu_objset_clone(clone1name, snap1name); 3468 if (error) { 3469 if (error == ENOSPC) { 3470 ztest_record_enospc(FTAG); 3471 goto out; 3472 } 3473 fatal(0, "dmu_objset_create(%s) = %d", clone1name, error); 3474 } 3475 3476 error = dmu_objset_snapshot_one(clone1name, strchr(snap2name, '@') + 1); 3477 if (error && error != EEXIST) { 3478 if (error == ENOSPC) { 3479 ztest_record_enospc(FTAG); 3480 goto out; 3481 } 3482 fatal(0, "dmu_open_snapshot(%s) = %d", snap2name, error); 3483 } 3484 3485 error = dmu_objset_snapshot_one(clone1name, strchr(snap3name, '@') + 1); 3486 if (error && error != EEXIST) { 3487 if (error == ENOSPC) { 3488 ztest_record_enospc(FTAG); 3489 goto out; 3490 } 3491 fatal(0, "dmu_open_snapshot(%s) = %d", snap3name, error); 3492 } 3493 3494 error = dmu_objset_clone(clone2name, snap3name); 3495 if (error) { 3496 if (error == ENOSPC) { 3497 ztest_record_enospc(FTAG); 3498 goto out; 3499 } 3500 fatal(0, "dmu_objset_create(%s) = %d", clone2name, error); 3501 } 3502 3503 error = dmu_objset_own(snap2name, DMU_OST_ANY, B_TRUE, FTAG, &os); 3504 if (error) 3505 fatal(0, "dmu_objset_own(%s) = %d", snap2name, error); 3506 error = dsl_dataset_promote(clone2name, NULL); 3507 if (error == ENOSPC) { 3508 dmu_objset_disown(os, FTAG); 3509 ztest_record_enospc(FTAG); 3510 goto out; 3511 } 3512 if (error != EBUSY) 3513 fatal(0, "dsl_dataset_promote(%s), %d, not EBUSY", clone2name, 3514 error); 3515 dmu_objset_disown(os, FTAG); 3516 3517 out: 3518 ztest_dsl_dataset_cleanup(osname, id); 3519 3520 (void) rw_unlock(&ztest_name_lock); 3521 } 3522 3523 /* 3524 * Verify that dmu_object_{alloc,free} work as expected. 3525 */ 3526 void 3527 ztest_dmu_object_alloc_free(ztest_ds_t *zd, uint64_t id) 3528 { 3529 ztest_od_t od[4]; 3530 int batchsize = sizeof (od) / sizeof (od[0]); 3531 3532 for (int b = 0; b < batchsize; b++) 3533 ztest_od_init(&od[b], id, FTAG, b, DMU_OT_UINT64_OTHER, 0, 0); 3534 3535 /* 3536 * Destroy the previous batch of objects, create a new batch, 3537 * and do some I/O on the new objects. 3538 */ 3539 if (ztest_object_init(zd, od, sizeof (od), B_TRUE) != 0) 3540 return; 3541 3542 while (ztest_random(4 * batchsize) != 0) 3543 ztest_io(zd, od[ztest_random(batchsize)].od_object, 3544 ztest_random(ZTEST_RANGE_LOCKS) << SPA_MAXBLOCKSHIFT); 3545 } 3546 3547 /* 3548 * Verify that dmu_{read,write} work as expected. 3549 */ 3550 void 3551 ztest_dmu_read_write(ztest_ds_t *zd, uint64_t id) 3552 { 3553 objset_t *os = zd->zd_os; 3554 ztest_od_t od[2]; 3555 dmu_tx_t *tx; 3556 int i, freeit, error; 3557 uint64_t n, s, txg; 3558 bufwad_t *packbuf, *bigbuf, *pack, *bigH, *bigT; 3559 uint64_t packobj, packoff, packsize, bigobj, bigoff, bigsize; 3560 uint64_t chunksize = (1000 + ztest_random(1000)) * sizeof (uint64_t); 3561 uint64_t regions = 997; 3562 uint64_t stride = 123456789ULL; 3563 uint64_t width = 40; 3564 int free_percent = 5; 3565 3566 /* 3567 * This test uses two objects, packobj and bigobj, that are always 3568 * updated together (i.e. in the same tx) so that their contents are 3569 * in sync and can be compared. Their contents relate to each other 3570 * in a simple way: packobj is a dense array of 'bufwad' structures, 3571 * while bigobj is a sparse array of the same bufwads. Specifically, 3572 * for any index n, there are three bufwads that should be identical: 3573 * 3574 * packobj, at offset n * sizeof (bufwad_t) 3575 * bigobj, at the head of the nth chunk 3576 * bigobj, at the tail of the nth chunk 3577 * 3578 * The chunk size is arbitrary. It doesn't have to be a power of two, 3579 * and it doesn't have any relation to the object blocksize. 3580 * The only requirement is that it can hold at least two bufwads. 3581 * 3582 * Normally, we write the bufwad to each of these locations. 3583 * However, free_percent of the time we instead write zeroes to 3584 * packobj and perform a dmu_free_range() on bigobj. By comparing 3585 * bigobj to packobj, we can verify that the DMU is correctly 3586 * tracking which parts of an object are allocated and free, 3587 * and that the contents of the allocated blocks are correct. 3588 */ 3589 3590 /* 3591 * Read the directory info. If it's the first time, set things up. 3592 */ 3593 ztest_od_init(&od[0], id, FTAG, 0, DMU_OT_UINT64_OTHER, 0, chunksize); 3594 ztest_od_init(&od[1], id, FTAG, 1, DMU_OT_UINT64_OTHER, 0, chunksize); 3595 3596 if (ztest_object_init(zd, od, sizeof (od), B_FALSE) != 0) 3597 return; 3598 3599 bigobj = od[0].od_object; 3600 packobj = od[1].od_object; 3601 chunksize = od[0].od_gen; 3602 ASSERT(chunksize == od[1].od_gen); 3603 3604 /* 3605 * Prefetch a random chunk of the big object. 3606 * Our aim here is to get some async reads in flight 3607 * for blocks that we may free below; the DMU should 3608 * handle this race correctly. 3609 */ 3610 n = ztest_random(regions) * stride + ztest_random(width); 3611 s = 1 + ztest_random(2 * width - 1); 3612 dmu_prefetch(os, bigobj, 0, n * chunksize, s * chunksize, 3613 ZIO_PRIORITY_SYNC_READ); 3614 3615 /* 3616 * Pick a random index and compute the offsets into packobj and bigobj. 3617 */ 3618 n = ztest_random(regions) * stride + ztest_random(width); 3619 s = 1 + ztest_random(width - 1); 3620 3621 packoff = n * sizeof (bufwad_t); 3622 packsize = s * sizeof (bufwad_t); 3623 3624 bigoff = n * chunksize; 3625 bigsize = s * chunksize; 3626 3627 packbuf = umem_alloc(packsize, UMEM_NOFAIL); 3628 bigbuf = umem_alloc(bigsize, UMEM_NOFAIL); 3629 3630 /* 3631 * free_percent of the time, free a range of bigobj rather than 3632 * overwriting it. 3633 */ 3634 freeit = (ztest_random(100) < free_percent); 3635 3636 /* 3637 * Read the current contents of our objects. 3638 */ 3639 error = dmu_read(os, packobj, packoff, packsize, packbuf, 3640 DMU_READ_PREFETCH); 3641 ASSERT0(error); 3642 error = dmu_read(os, bigobj, bigoff, bigsize, bigbuf, 3643 DMU_READ_PREFETCH); 3644 ASSERT0(error); 3645 3646 /* 3647 * Get a tx for the mods to both packobj and bigobj. 3648 */ 3649 tx = dmu_tx_create(os); 3650 3651 dmu_tx_hold_write(tx, packobj, packoff, packsize); 3652 3653 if (freeit) 3654 dmu_tx_hold_free(tx, bigobj, bigoff, bigsize); 3655 else 3656 dmu_tx_hold_write(tx, bigobj, bigoff, bigsize); 3657 3658 /* This accounts for setting the checksum/compression. */ 3659 dmu_tx_hold_bonus(tx, bigobj); 3660 3661 txg = ztest_tx_assign(tx, TXG_MIGHTWAIT, FTAG); 3662 if (txg == 0) { 3663 umem_free(packbuf, packsize); 3664 umem_free(bigbuf, bigsize); 3665 return; 3666 } 3667 3668 enum zio_checksum cksum; 3669 do { 3670 cksum = (enum zio_checksum) 3671 ztest_random_dsl_prop(ZFS_PROP_CHECKSUM); 3672 } while (cksum >= ZIO_CHECKSUM_LEGACY_FUNCTIONS); 3673 dmu_object_set_checksum(os, bigobj, cksum, tx); 3674 3675 enum zio_compress comp; 3676 do { 3677 comp = (enum zio_compress) 3678 ztest_random_dsl_prop(ZFS_PROP_COMPRESSION); 3679 } while (comp >= ZIO_COMPRESS_LEGACY_FUNCTIONS); 3680 dmu_object_set_compress(os, bigobj, comp, tx); 3681 3682 /* 3683 * For each index from n to n + s, verify that the existing bufwad 3684 * in packobj matches the bufwads at the head and tail of the 3685 * corresponding chunk in bigobj. Then update all three bufwads 3686 * with the new values we want to write out. 3687 */ 3688 for (i = 0; i < s; i++) { 3689 /* LINTED */ 3690 pack = (bufwad_t *)((char *)packbuf + i * sizeof (bufwad_t)); 3691 /* LINTED */ 3692 bigH = (bufwad_t *)((char *)bigbuf + i * chunksize); 3693 /* LINTED */ 3694 bigT = (bufwad_t *)((char *)bigH + chunksize) - 1; 3695 3696 ASSERT((uintptr_t)bigH - (uintptr_t)bigbuf < bigsize); 3697 ASSERT((uintptr_t)bigT - (uintptr_t)bigbuf < bigsize); 3698 3699 if (pack->bw_txg > txg) 3700 fatal(0, "future leak: got %llx, open txg is %llx", 3701 pack->bw_txg, txg); 3702 3703 if (pack->bw_data != 0 && pack->bw_index != n + i) 3704 fatal(0, "wrong index: got %llx, wanted %llx+%llx", 3705 pack->bw_index, n, i); 3706 3707 if (bcmp(pack, bigH, sizeof (bufwad_t)) != 0) 3708 fatal(0, "pack/bigH mismatch in %p/%p", pack, bigH); 3709 3710 if (bcmp(pack, bigT, sizeof (bufwad_t)) != 0) 3711 fatal(0, "pack/bigT mismatch in %p/%p", pack, bigT); 3712 3713 if (freeit) { 3714 bzero(pack, sizeof (bufwad_t)); 3715 } else { 3716 pack->bw_index = n + i; 3717 pack->bw_txg = txg; 3718 pack->bw_data = 1 + ztest_random(-2ULL); 3719 } 3720 *bigH = *pack; 3721 *bigT = *pack; 3722 } 3723 3724 /* 3725 * We've verified all the old bufwads, and made new ones. 3726 * Now write them out. 3727 */ 3728 dmu_write(os, packobj, packoff, packsize, packbuf, tx); 3729 3730 if (freeit) { 3731 if (ztest_opts.zo_verbose >= 7) { 3732 (void) printf("freeing offset %llx size %llx" 3733 " txg %llx\n", 3734 (u_longlong_t)bigoff, 3735 (u_longlong_t)bigsize, 3736 (u_longlong_t)txg); 3737 } 3738 VERIFY(0 == dmu_free_range(os, bigobj, bigoff, bigsize, tx)); 3739 } else { 3740 if (ztest_opts.zo_verbose >= 7) { 3741 (void) printf("writing offset %llx size %llx" 3742 " txg %llx\n", 3743 (u_longlong_t)bigoff, 3744 (u_longlong_t)bigsize, 3745 (u_longlong_t)txg); 3746 } 3747 dmu_write(os, bigobj, bigoff, bigsize, bigbuf, tx); 3748 } 3749 3750 dmu_tx_commit(tx); 3751 3752 /* 3753 * Sanity check the stuff we just wrote. 3754 */ 3755 { 3756 void *packcheck = umem_alloc(packsize, UMEM_NOFAIL); 3757 void *bigcheck = umem_alloc(bigsize, UMEM_NOFAIL); 3758 3759 VERIFY(0 == dmu_read(os, packobj, packoff, 3760 packsize, packcheck, DMU_READ_PREFETCH)); 3761 VERIFY(0 == dmu_read(os, bigobj, bigoff, 3762 bigsize, bigcheck, DMU_READ_PREFETCH)); 3763 3764 ASSERT(bcmp(packbuf, packcheck, packsize) == 0); 3765 ASSERT(bcmp(bigbuf, bigcheck, bigsize) == 0); 3766 3767 umem_free(packcheck, packsize); 3768 umem_free(bigcheck, bigsize); 3769 } 3770 3771 umem_free(packbuf, packsize); 3772 umem_free(bigbuf, bigsize); 3773 } 3774 3775 void 3776 compare_and_update_pbbufs(uint64_t s, bufwad_t *packbuf, bufwad_t *bigbuf, 3777 uint64_t bigsize, uint64_t n, uint64_t chunksize, uint64_t txg) 3778 { 3779 uint64_t i; 3780 bufwad_t *pack; 3781 bufwad_t *bigH; 3782 bufwad_t *bigT; 3783 3784 /* 3785 * For each index from n to n + s, verify that the existing bufwad 3786 * in packobj matches the bufwads at the head and tail of the 3787 * corresponding chunk in bigobj. Then update all three bufwads 3788 * with the new values we want to write out. 3789 */ 3790 for (i = 0; i < s; i++) { 3791 /* LINTED */ 3792 pack = (bufwad_t *)((char *)packbuf + i * sizeof (bufwad_t)); 3793 /* LINTED */ 3794 bigH = (bufwad_t *)((char *)bigbuf + i * chunksize); 3795 /* LINTED */ 3796 bigT = (bufwad_t *)((char *)bigH + chunksize) - 1; 3797 3798 ASSERT((uintptr_t)bigH - (uintptr_t)bigbuf < bigsize); 3799 ASSERT((uintptr_t)bigT - (uintptr_t)bigbuf < bigsize); 3800 3801 if (pack->bw_txg > txg) 3802 fatal(0, "future leak: got %llx, open txg is %llx", 3803 pack->bw_txg, txg); 3804 3805 if (pack->bw_data != 0 && pack->bw_index != n + i) 3806 fatal(0, "wrong index: got %llx, wanted %llx+%llx", 3807 pack->bw_index, n, i); 3808 3809 if (bcmp(pack, bigH, sizeof (bufwad_t)) != 0) 3810 fatal(0, "pack/bigH mismatch in %p/%p", pack, bigH); 3811 3812 if (bcmp(pack, bigT, sizeof (bufwad_t)) != 0) 3813 fatal(0, "pack/bigT mismatch in %p/%p", pack, bigT); 3814 3815 pack->bw_index = n + i; 3816 pack->bw_txg = txg; 3817 pack->bw_data = 1 + ztest_random(-2ULL); 3818 3819 *bigH = *pack; 3820 *bigT = *pack; 3821 } 3822 } 3823 3824 void 3825 ztest_dmu_read_write_zcopy(ztest_ds_t *zd, uint64_t id) 3826 { 3827 objset_t *os = zd->zd_os; 3828 ztest_od_t od[2]; 3829 dmu_tx_t *tx; 3830 uint64_t i; 3831 int error; 3832 uint64_t n, s, txg; 3833 bufwad_t *packbuf, *bigbuf; 3834 uint64_t packobj, packoff, packsize, bigobj, bigoff, bigsize; 3835 uint64_t blocksize = ztest_random_blocksize(); 3836 uint64_t chunksize = blocksize; 3837 uint64_t regions = 997; 3838 uint64_t stride = 123456789ULL; 3839 uint64_t width = 9; 3840 dmu_buf_t *bonus_db; 3841 arc_buf_t **bigbuf_arcbufs; 3842 dmu_object_info_t doi; 3843 3844 /* 3845 * This test uses two objects, packobj and bigobj, that are always 3846 * updated together (i.e. in the same tx) so that their contents are 3847 * in sync and can be compared. Their contents relate to each other 3848 * in a simple way: packobj is a dense array of 'bufwad' structures, 3849 * while bigobj is a sparse array of the same bufwads. Specifically, 3850 * for any index n, there are three bufwads that should be identical: 3851 * 3852 * packobj, at offset n * sizeof (bufwad_t) 3853 * bigobj, at the head of the nth chunk 3854 * bigobj, at the tail of the nth chunk 3855 * 3856 * The chunk size is set equal to bigobj block size so that 3857 * dmu_assign_arcbuf() can be tested for object updates. 3858 */ 3859 3860 /* 3861 * Read the directory info. If it's the first time, set things up. 3862 */ 3863 ztest_od_init(&od[0], id, FTAG, 0, DMU_OT_UINT64_OTHER, blocksize, 0); 3864 ztest_od_init(&od[1], id, FTAG, 1, DMU_OT_UINT64_OTHER, 0, chunksize); 3865 3866 if (ztest_object_init(zd, od, sizeof (od), B_FALSE) != 0) 3867 return; 3868 3869 bigobj = od[0].od_object; 3870 packobj = od[1].od_object; 3871 blocksize = od[0].od_blocksize; 3872 chunksize = blocksize; 3873 ASSERT(chunksize == od[1].od_gen); 3874 3875 VERIFY(dmu_object_info(os, bigobj, &doi) == 0); 3876 VERIFY(ISP2(doi.doi_data_block_size)); 3877 VERIFY(chunksize == doi.doi_data_block_size); 3878 VERIFY(chunksize >= 2 * sizeof (bufwad_t)); 3879 3880 /* 3881 * Pick a random index and compute the offsets into packobj and bigobj. 3882 */ 3883 n = ztest_random(regions) * stride + ztest_random(width); 3884 s = 1 + ztest_random(width - 1); 3885 3886 packoff = n * sizeof (bufwad_t); 3887 packsize = s * sizeof (bufwad_t); 3888 3889 bigoff = n * chunksize; 3890 bigsize = s * chunksize; 3891 3892 packbuf = umem_zalloc(packsize, UMEM_NOFAIL); 3893 bigbuf = umem_zalloc(bigsize, UMEM_NOFAIL); 3894 3895 VERIFY3U(0, ==, dmu_bonus_hold(os, bigobj, FTAG, &bonus_db)); 3896 3897 bigbuf_arcbufs = umem_zalloc(2 * s * sizeof (arc_buf_t *), UMEM_NOFAIL); 3898 3899 /* 3900 * Iteration 0 test zcopy for DB_UNCACHED dbufs. 3901 * Iteration 1 test zcopy to already referenced dbufs. 3902 * Iteration 2 test zcopy to dirty dbuf in the same txg. 3903 * Iteration 3 test zcopy to dbuf dirty in previous txg. 3904 * Iteration 4 test zcopy when dbuf is no longer dirty. 3905 * Iteration 5 test zcopy when it can't be done. 3906 * Iteration 6 one more zcopy write. 3907 */ 3908 for (i = 0; i < 7; i++) { 3909 uint64_t j; 3910 uint64_t off; 3911 3912 /* 3913 * In iteration 5 (i == 5) use arcbufs 3914 * that don't match bigobj blksz to test 3915 * dmu_assign_arcbuf() when it can't directly 3916 * assign an arcbuf to a dbuf. 3917 */ 3918 for (j = 0; j < s; j++) { 3919 if (i != 5 || chunksize < (SPA_MINBLOCKSIZE * 2)) { 3920 bigbuf_arcbufs[j] = 3921 dmu_request_arcbuf(bonus_db, chunksize); 3922 } else { 3923 bigbuf_arcbufs[2 * j] = 3924 dmu_request_arcbuf(bonus_db, chunksize / 2); 3925 bigbuf_arcbufs[2 * j + 1] = 3926 dmu_request_arcbuf(bonus_db, chunksize / 2); 3927 } 3928 } 3929 3930 /* 3931 * Get a tx for the mods to both packobj and bigobj. 3932 */ 3933 tx = dmu_tx_create(os); 3934 3935 dmu_tx_hold_write(tx, packobj, packoff, packsize); 3936 dmu_tx_hold_write(tx, bigobj, bigoff, bigsize); 3937 3938 txg = ztest_tx_assign(tx, TXG_MIGHTWAIT, FTAG); 3939 if (txg == 0) { 3940 umem_free(packbuf, packsize); 3941 umem_free(bigbuf, bigsize); 3942 for (j = 0; j < s; j++) { 3943 if (i != 5 || 3944 chunksize < (SPA_MINBLOCKSIZE * 2)) { 3945 dmu_return_arcbuf(bigbuf_arcbufs[j]); 3946 } else { 3947 dmu_return_arcbuf( 3948 bigbuf_arcbufs[2 * j]); 3949 dmu_return_arcbuf( 3950 bigbuf_arcbufs[2 * j + 1]); 3951 } 3952 } 3953 umem_free(bigbuf_arcbufs, 2 * s * sizeof (arc_buf_t *)); 3954 dmu_buf_rele(bonus_db, FTAG); 3955 return; 3956 } 3957 3958 /* 3959 * 50% of the time don't read objects in the 1st iteration to 3960 * test dmu_assign_arcbuf() for the case when there're no 3961 * existing dbufs for the specified offsets. 3962 */ 3963 if (i != 0 || ztest_random(2) != 0) { 3964 error = dmu_read(os, packobj, packoff, 3965 packsize, packbuf, DMU_READ_PREFETCH); 3966 ASSERT0(error); 3967 error = dmu_read(os, bigobj, bigoff, bigsize, 3968 bigbuf, DMU_READ_PREFETCH); 3969 ASSERT0(error); 3970 } 3971 compare_and_update_pbbufs(s, packbuf, bigbuf, bigsize, 3972 n, chunksize, txg); 3973 3974 /* 3975 * We've verified all the old bufwads, and made new ones. 3976 * Now write them out. 3977 */ 3978 dmu_write(os, packobj, packoff, packsize, packbuf, tx); 3979 if (ztest_opts.zo_verbose >= 7) { 3980 (void) printf("writing offset %llx size %llx" 3981 " txg %llx\n", 3982 (u_longlong_t)bigoff, 3983 (u_longlong_t)bigsize, 3984 (u_longlong_t)txg); 3985 } 3986 for (off = bigoff, j = 0; j < s; j++, off += chunksize) { 3987 dmu_buf_t *dbt; 3988 if (i != 5 || chunksize < (SPA_MINBLOCKSIZE * 2)) { 3989 bcopy((caddr_t)bigbuf + (off - bigoff), 3990 bigbuf_arcbufs[j]->b_data, chunksize); 3991 } else { 3992 bcopy((caddr_t)bigbuf + (off - bigoff), 3993 bigbuf_arcbufs[2 * j]->b_data, 3994 chunksize / 2); 3995 bcopy((caddr_t)bigbuf + (off - bigoff) + 3996 chunksize / 2, 3997 bigbuf_arcbufs[2 * j + 1]->b_data, 3998 chunksize / 2); 3999 } 4000 4001 if (i == 1) { 4002 VERIFY(dmu_buf_hold(os, bigobj, off, 4003 FTAG, &dbt, DMU_READ_NO_PREFETCH) == 0); 4004 } 4005 if (i != 5 || chunksize < (SPA_MINBLOCKSIZE * 2)) { 4006 dmu_assign_arcbuf(bonus_db, off, 4007 bigbuf_arcbufs[j], tx); 4008 } else { 4009 dmu_assign_arcbuf(bonus_db, off, 4010 bigbuf_arcbufs[2 * j], tx); 4011 dmu_assign_arcbuf(bonus_db, 4012 off + chunksize / 2, 4013 bigbuf_arcbufs[2 * j + 1], tx); 4014 } 4015 if (i == 1) { 4016 dmu_buf_rele(dbt, FTAG); 4017 } 4018 } 4019 dmu_tx_commit(tx); 4020 4021 /* 4022 * Sanity check the stuff we just wrote. 4023 */ 4024 { 4025 void *packcheck = umem_alloc(packsize, UMEM_NOFAIL); 4026 void *bigcheck = umem_alloc(bigsize, UMEM_NOFAIL); 4027 4028 VERIFY(0 == dmu_read(os, packobj, packoff, 4029 packsize, packcheck, DMU_READ_PREFETCH)); 4030 VERIFY(0 == dmu_read(os, bigobj, bigoff, 4031 bigsize, bigcheck, DMU_READ_PREFETCH)); 4032 4033 ASSERT(bcmp(packbuf, packcheck, packsize) == 0); 4034 ASSERT(bcmp(bigbuf, bigcheck, bigsize) == 0); 4035 4036 umem_free(packcheck, packsize); 4037 umem_free(bigcheck, bigsize); 4038 } 4039 if (i == 2) { 4040 txg_wait_open(dmu_objset_pool(os), 0); 4041 } else if (i == 3) { 4042 txg_wait_synced(dmu_objset_pool(os), 0); 4043 } 4044 } 4045 4046 dmu_buf_rele(bonus_db, FTAG); 4047 umem_free(packbuf, packsize); 4048 umem_free(bigbuf, bigsize); 4049 umem_free(bigbuf_arcbufs, 2 * s * sizeof (arc_buf_t *)); 4050 } 4051 4052 /* ARGSUSED */ 4053 void 4054 ztest_dmu_write_parallel(ztest_ds_t *zd, uint64_t id) 4055 { 4056 ztest_od_t od[1]; 4057 uint64_t offset = (1ULL << (ztest_random(20) + 43)) + 4058 (ztest_random(ZTEST_RANGE_LOCKS) << SPA_MAXBLOCKSHIFT); 4059 4060 /* 4061 * Have multiple threads write to large offsets in an object 4062 * to verify that parallel writes to an object -- even to the 4063 * same blocks within the object -- doesn't cause any trouble. 4064 */ 4065 ztest_od_init(&od[0], ID_PARALLEL, FTAG, 0, DMU_OT_UINT64_OTHER, 0, 0); 4066 4067 if (ztest_object_init(zd, od, sizeof (od), B_FALSE) != 0) 4068 return; 4069 4070 while (ztest_random(10) != 0) 4071 ztest_io(zd, od[0].od_object, offset); 4072 } 4073 4074 void 4075 ztest_dmu_prealloc(ztest_ds_t *zd, uint64_t id) 4076 { 4077 ztest_od_t od[1]; 4078 uint64_t offset = (1ULL << (ztest_random(4) + SPA_MAXBLOCKSHIFT)) + 4079 (ztest_random(ZTEST_RANGE_LOCKS) << SPA_MAXBLOCKSHIFT); 4080 uint64_t count = ztest_random(20) + 1; 4081 uint64_t blocksize = ztest_random_blocksize(); 4082 void *data; 4083 4084 ztest_od_init(&od[0], id, FTAG, 0, DMU_OT_UINT64_OTHER, blocksize, 0); 4085 4086 if (ztest_object_init(zd, od, sizeof (od), !ztest_random(2)) != 0) 4087 return; 4088 4089 if (ztest_truncate(zd, od[0].od_object, offset, count * blocksize) != 0) 4090 return; 4091 4092 ztest_prealloc(zd, od[0].od_object, offset, count * blocksize); 4093 4094 data = umem_zalloc(blocksize, UMEM_NOFAIL); 4095 4096 while (ztest_random(count) != 0) { 4097 uint64_t randoff = offset + (ztest_random(count) * blocksize); 4098 if (ztest_write(zd, od[0].od_object, randoff, blocksize, 4099 data) != 0) 4100 break; 4101 while (ztest_random(4) != 0) 4102 ztest_io(zd, od[0].od_object, randoff); 4103 } 4104 4105 umem_free(data, blocksize); 4106 } 4107 4108 /* 4109 * Verify that zap_{create,destroy,add,remove,update} work as expected. 4110 */ 4111 #define ZTEST_ZAP_MIN_INTS 1 4112 #define ZTEST_ZAP_MAX_INTS 4 4113 #define ZTEST_ZAP_MAX_PROPS 1000 4114 4115 void 4116 ztest_zap(ztest_ds_t *zd, uint64_t id) 4117 { 4118 objset_t *os = zd->zd_os; 4119 ztest_od_t od[1]; 4120 uint64_t object; 4121 uint64_t txg, last_txg; 4122 uint64_t value[ZTEST_ZAP_MAX_INTS]; 4123 uint64_t zl_ints, zl_intsize, prop; 4124 int i, ints; 4125 dmu_tx_t *tx; 4126 char propname[100], txgname[100]; 4127 int error; 4128 char *hc[2] = { "s.acl.h", ".s.open.h.hyLZlg" }; 4129 4130 ztest_od_init(&od[0], id, FTAG, 0, DMU_OT_ZAP_OTHER, 0, 0); 4131 4132 if (ztest_object_init(zd, od, sizeof (od), !ztest_random(2)) != 0) 4133 return; 4134 4135 object = od[0].od_object; 4136 4137 /* 4138 * Generate a known hash collision, and verify that 4139 * we can lookup and remove both entries. 4140 */ 4141 tx = dmu_tx_create(os); 4142 dmu_tx_hold_zap(tx, object, B_TRUE, NULL); 4143 txg = ztest_tx_assign(tx, TXG_MIGHTWAIT, FTAG); 4144 if (txg == 0) 4145 return; 4146 for (i = 0; i < 2; i++) { 4147 value[i] = i; 4148 VERIFY3U(0, ==, zap_add(os, object, hc[i], sizeof (uint64_t), 4149 1, &value[i], tx)); 4150 } 4151 for (i = 0; i < 2; i++) { 4152 VERIFY3U(EEXIST, ==, zap_add(os, object, hc[i], 4153 sizeof (uint64_t), 1, &value[i], tx)); 4154 VERIFY3U(0, ==, 4155 zap_length(os, object, hc[i], &zl_intsize, &zl_ints)); 4156 ASSERT3U(zl_intsize, ==, sizeof (uint64_t)); 4157 ASSERT3U(zl_ints, ==, 1); 4158 } 4159 for (i = 0; i < 2; i++) { 4160 VERIFY3U(0, ==, zap_remove(os, object, hc[i], tx)); 4161 } 4162 dmu_tx_commit(tx); 4163 4164 /* 4165 * Generate a buch of random entries. 4166 */ 4167 ints = MAX(ZTEST_ZAP_MIN_INTS, object % ZTEST_ZAP_MAX_INTS); 4168 4169 prop = ztest_random(ZTEST_ZAP_MAX_PROPS); 4170 (void) sprintf(propname, "prop_%llu", (u_longlong_t)prop); 4171 (void) sprintf(txgname, "txg_%llu", (u_longlong_t)prop); 4172 bzero(value, sizeof (value)); 4173 last_txg = 0; 4174 4175 /* 4176 * If these zap entries already exist, validate their contents. 4177 */ 4178 error = zap_length(os, object, txgname, &zl_intsize, &zl_ints); 4179 if (error == 0) { 4180 ASSERT3U(zl_intsize, ==, sizeof (uint64_t)); 4181 ASSERT3U(zl_ints, ==, 1); 4182 4183 VERIFY(zap_lookup(os, object, txgname, zl_intsize, 4184 zl_ints, &last_txg) == 0); 4185 4186 VERIFY(zap_length(os, object, propname, &zl_intsize, 4187 &zl_ints) == 0); 4188 4189 ASSERT3U(zl_intsize, ==, sizeof (uint64_t)); 4190 ASSERT3U(zl_ints, ==, ints); 4191 4192 VERIFY(zap_lookup(os, object, propname, zl_intsize, 4193 zl_ints, value) == 0); 4194 4195 for (i = 0; i < ints; i++) { 4196 ASSERT3U(value[i], ==, last_txg + object + i); 4197 } 4198 } else { 4199 ASSERT3U(error, ==, ENOENT); 4200 } 4201 4202 /* 4203 * Atomically update two entries in our zap object. 4204 * The first is named txg_%llu, and contains the txg 4205 * in which the property was last updated. The second 4206 * is named prop_%llu, and the nth element of its value 4207 * should be txg + object + n. 4208 */ 4209 tx = dmu_tx_create(os); 4210 dmu_tx_hold_zap(tx, object, B_TRUE, NULL); 4211 txg = ztest_tx_assign(tx, TXG_MIGHTWAIT, FTAG); 4212 if (txg == 0) 4213 return; 4214 4215 if (last_txg > txg) 4216 fatal(0, "zap future leak: old %llu new %llu", last_txg, txg); 4217 4218 for (i = 0; i < ints; i++) 4219 value[i] = txg + object + i; 4220 4221 VERIFY3U(0, ==, zap_update(os, object, txgname, sizeof (uint64_t), 4222 1, &txg, tx)); 4223 VERIFY3U(0, ==, zap_update(os, object, propname, sizeof (uint64_t), 4224 ints, value, tx)); 4225 4226 dmu_tx_commit(tx); 4227 4228 /* 4229 * Remove a random pair of entries. 4230 */ 4231 prop = ztest_random(ZTEST_ZAP_MAX_PROPS); 4232 (void) sprintf(propname, "prop_%llu", (u_longlong_t)prop); 4233 (void) sprintf(txgname, "txg_%llu", (u_longlong_t)prop); 4234 4235 error = zap_length(os, object, txgname, &zl_intsize, &zl_ints); 4236 4237 if (error == ENOENT) 4238 return; 4239 4240 ASSERT0(error); 4241 4242 tx = dmu_tx_create(os); 4243 dmu_tx_hold_zap(tx, object, B_TRUE, NULL); 4244 txg = ztest_tx_assign(tx, TXG_MIGHTWAIT, FTAG); 4245 if (txg == 0) 4246 return; 4247 VERIFY3U(0, ==, zap_remove(os, object, txgname, tx)); 4248 VERIFY3U(0, ==, zap_remove(os, object, propname, tx)); 4249 dmu_tx_commit(tx); 4250 } 4251 4252 /* 4253 * Testcase to test the upgrading of a microzap to fatzap. 4254 */ 4255 void 4256 ztest_fzap(ztest_ds_t *zd, uint64_t id) 4257 { 4258 objset_t *os = zd->zd_os; 4259 ztest_od_t od[1]; 4260 uint64_t object, txg; 4261 4262 ztest_od_init(&od[0], id, FTAG, 0, DMU_OT_ZAP_OTHER, 0, 0); 4263 4264 if (ztest_object_init(zd, od, sizeof (od), !ztest_random(2)) != 0) 4265 return; 4266 4267 object = od[0].od_object; 4268 4269 /* 4270 * Add entries to this ZAP and make sure it spills over 4271 * and gets upgraded to a fatzap. Also, since we are adding 4272 * 2050 entries we should see ptrtbl growth and leaf-block split. 4273 */ 4274 for (int i = 0; i < 2050; i++) { 4275 char name[ZFS_MAX_DATASET_NAME_LEN]; 4276 uint64_t value = i; 4277 dmu_tx_t *tx; 4278 int error; 4279 4280 (void) snprintf(name, sizeof (name), "fzap-%llu-%llu", 4281 id, value); 4282 4283 tx = dmu_tx_create(os); 4284 dmu_tx_hold_zap(tx, object, B_TRUE, name); 4285 txg = ztest_tx_assign(tx, TXG_MIGHTWAIT, FTAG); 4286 if (txg == 0) 4287 return; 4288 error = zap_add(os, object, name, sizeof (uint64_t), 1, 4289 &value, tx); 4290 ASSERT(error == 0 || error == EEXIST); 4291 dmu_tx_commit(tx); 4292 } 4293 } 4294 4295 /* ARGSUSED */ 4296 void 4297 ztest_zap_parallel(ztest_ds_t *zd, uint64_t id) 4298 { 4299 objset_t *os = zd->zd_os; 4300 ztest_od_t od[1]; 4301 uint64_t txg, object, count, wsize, wc, zl_wsize, zl_wc; 4302 dmu_tx_t *tx; 4303 int i, namelen, error; 4304 int micro = ztest_random(2); 4305 char name[20], string_value[20]; 4306 void *data; 4307 4308 ztest_od_init(&od[0], ID_PARALLEL, FTAG, micro, DMU_OT_ZAP_OTHER, 0, 0); 4309 4310 if (ztest_object_init(zd, od, sizeof (od), B_FALSE) != 0) 4311 return; 4312 4313 object = od[0].od_object; 4314 4315 /* 4316 * Generate a random name of the form 'xxx.....' where each 4317 * x is a random printable character and the dots are dots. 4318 * There are 94 such characters, and the name length goes from 4319 * 6 to 20, so there are 94^3 * 15 = 12,458,760 possible names. 4320 */ 4321 namelen = ztest_random(sizeof (name) - 5) + 5 + 1; 4322 4323 for (i = 0; i < 3; i++) 4324 name[i] = '!' + ztest_random('~' - '!' + 1); 4325 for (; i < namelen - 1; i++) 4326 name[i] = '.'; 4327 name[i] = '\0'; 4328 4329 if ((namelen & 1) || micro) { 4330 wsize = sizeof (txg); 4331 wc = 1; 4332 data = &txg; 4333 } else { 4334 wsize = 1; 4335 wc = namelen; 4336 data = string_value; 4337 } 4338 4339 count = -1ULL; 4340 VERIFY0(zap_count(os, object, &count)); 4341 ASSERT(count != -1ULL); 4342 4343 /* 4344 * Select an operation: length, lookup, add, update, remove. 4345 */ 4346 i = ztest_random(5); 4347 4348 if (i >= 2) { 4349 tx = dmu_tx_create(os); 4350 dmu_tx_hold_zap(tx, object, B_TRUE, NULL); 4351 txg = ztest_tx_assign(tx, TXG_MIGHTWAIT, FTAG); 4352 if (txg == 0) 4353 return; 4354 bcopy(name, string_value, namelen); 4355 } else { 4356 tx = NULL; 4357 txg = 0; 4358 bzero(string_value, namelen); 4359 } 4360 4361 switch (i) { 4362 4363 case 0: 4364 error = zap_length(os, object, name, &zl_wsize, &zl_wc); 4365 if (error == 0) { 4366 ASSERT3U(wsize, ==, zl_wsize); 4367 ASSERT3U(wc, ==, zl_wc); 4368 } else { 4369 ASSERT3U(error, ==, ENOENT); 4370 } 4371 break; 4372 4373 case 1: 4374 error = zap_lookup(os, object, name, wsize, wc, data); 4375 if (error == 0) { 4376 if (data == string_value && 4377 bcmp(name, data, namelen) != 0) 4378 fatal(0, "name '%s' != val '%s' len %d", 4379 name, data, namelen); 4380 } else { 4381 ASSERT3U(error, ==, ENOENT); 4382 } 4383 break; 4384 4385 case 2: 4386 error = zap_add(os, object, name, wsize, wc, data, tx); 4387 ASSERT(error == 0 || error == EEXIST); 4388 break; 4389 4390 case 3: 4391 VERIFY(zap_update(os, object, name, wsize, wc, data, tx) == 0); 4392 break; 4393 4394 case 4: 4395 error = zap_remove(os, object, name, tx); 4396 ASSERT(error == 0 || error == ENOENT); 4397 break; 4398 } 4399 4400 if (tx != NULL) 4401 dmu_tx_commit(tx); 4402 } 4403 4404 /* 4405 * Commit callback data. 4406 */ 4407 typedef struct ztest_cb_data { 4408 list_node_t zcd_node; 4409 uint64_t zcd_txg; 4410 int zcd_expected_err; 4411 boolean_t zcd_added; 4412 boolean_t zcd_called; 4413 spa_t *zcd_spa; 4414 } ztest_cb_data_t; 4415 4416 /* This is the actual commit callback function */ 4417 static void 4418 ztest_commit_callback(void *arg, int error) 4419 { 4420 ztest_cb_data_t *data = arg; 4421 uint64_t synced_txg; 4422 4423 VERIFY(data != NULL); 4424 VERIFY3S(data->zcd_expected_err, ==, error); 4425 VERIFY(!data->zcd_called); 4426 4427 synced_txg = spa_last_synced_txg(data->zcd_spa); 4428 if (data->zcd_txg > synced_txg) 4429 fatal(0, "commit callback of txg %" PRIu64 " called prematurely" 4430 ", last synced txg = %" PRIu64 "\n", data->zcd_txg, 4431 synced_txg); 4432 4433 data->zcd_called = B_TRUE; 4434 4435 if (error == ECANCELED) { 4436 ASSERT0(data->zcd_txg); 4437 ASSERT(!data->zcd_added); 4438 4439 /* 4440 * The private callback data should be destroyed here, but 4441 * since we are going to check the zcd_called field after 4442 * dmu_tx_abort(), we will destroy it there. 4443 */ 4444 return; 4445 } 4446 4447 /* Was this callback added to the global callback list? */ 4448 if (!data->zcd_added) 4449 goto out; 4450 4451 ASSERT3U(data->zcd_txg, !=, 0); 4452 4453 /* Remove our callback from the list */ 4454 (void) mutex_lock(&zcl.zcl_callbacks_lock); 4455 list_remove(&zcl.zcl_callbacks, data); 4456 (void) mutex_unlock(&zcl.zcl_callbacks_lock); 4457 4458 out: 4459 umem_free(data, sizeof (ztest_cb_data_t)); 4460 } 4461 4462 /* Allocate and initialize callback data structure */ 4463 static ztest_cb_data_t * 4464 ztest_create_cb_data(objset_t *os, uint64_t txg) 4465 { 4466 ztest_cb_data_t *cb_data; 4467 4468 cb_data = umem_zalloc(sizeof (ztest_cb_data_t), UMEM_NOFAIL); 4469 4470 cb_data->zcd_txg = txg; 4471 cb_data->zcd_spa = dmu_objset_spa(os); 4472 4473 return (cb_data); 4474 } 4475 4476 /* 4477 * If a number of txgs equal to this threshold have been created after a commit 4478 * callback has been registered but not called, then we assume there is an 4479 * implementation bug. 4480 */ 4481 #define ZTEST_COMMIT_CALLBACK_THRESH (TXG_CONCURRENT_STATES + 2) 4482 4483 /* 4484 * Commit callback test. 4485 */ 4486 void 4487 ztest_dmu_commit_callbacks(ztest_ds_t *zd, uint64_t id) 4488 { 4489 objset_t *os = zd->zd_os; 4490 ztest_od_t od[1]; 4491 dmu_tx_t *tx; 4492 ztest_cb_data_t *cb_data[3], *tmp_cb; 4493 uint64_t old_txg, txg; 4494 int i, error; 4495 4496 ztest_od_init(&od[0], id, FTAG, 0, DMU_OT_UINT64_OTHER, 0, 0); 4497 4498 if (ztest_object_init(zd, od, sizeof (od), B_FALSE) != 0) 4499 return; 4500 4501 tx = dmu_tx_create(os); 4502 4503 cb_data[0] = ztest_create_cb_data(os, 0); 4504 dmu_tx_callback_register(tx, ztest_commit_callback, cb_data[0]); 4505 4506 dmu_tx_hold_write(tx, od[0].od_object, 0, sizeof (uint64_t)); 4507 4508 /* Every once in a while, abort the transaction on purpose */ 4509 if (ztest_random(100) == 0) 4510 error = -1; 4511 4512 if (!error) 4513 error = dmu_tx_assign(tx, TXG_NOWAIT); 4514 4515 txg = error ? 0 : dmu_tx_get_txg(tx); 4516 4517 cb_data[0]->zcd_txg = txg; 4518 cb_data[1] = ztest_create_cb_data(os, txg); 4519 dmu_tx_callback_register(tx, ztest_commit_callback, cb_data[1]); 4520 4521 if (error) { 4522 /* 4523 * It's not a strict requirement to call the registered 4524 * callbacks from inside dmu_tx_abort(), but that's what 4525 * it's supposed to happen in the current implementation 4526 * so we will check for that. 4527 */ 4528 for (i = 0; i < 2; i++) { 4529 cb_data[i]->zcd_expected_err = ECANCELED; 4530 VERIFY(!cb_data[i]->zcd_called); 4531 } 4532 4533 dmu_tx_abort(tx); 4534 4535 for (i = 0; i < 2; i++) { 4536 VERIFY(cb_data[i]->zcd_called); 4537 umem_free(cb_data[i], sizeof (ztest_cb_data_t)); 4538 } 4539 4540 return; 4541 } 4542 4543 cb_data[2] = ztest_create_cb_data(os, txg); 4544 dmu_tx_callback_register(tx, ztest_commit_callback, cb_data[2]); 4545 4546 /* 4547 * Read existing data to make sure there isn't a future leak. 4548 */ 4549 VERIFY(0 == dmu_read(os, od[0].od_object, 0, sizeof (uint64_t), 4550 &old_txg, DMU_READ_PREFETCH)); 4551 4552 if (old_txg > txg) 4553 fatal(0, "future leak: got %" PRIu64 ", open txg is %" PRIu64, 4554 old_txg, txg); 4555 4556 dmu_write(os, od[0].od_object, 0, sizeof (uint64_t), &txg, tx); 4557 4558 (void) mutex_lock(&zcl.zcl_callbacks_lock); 4559 4560 /* 4561 * Since commit callbacks don't have any ordering requirement and since 4562 * it is theoretically possible for a commit callback to be called 4563 * after an arbitrary amount of time has elapsed since its txg has been 4564 * synced, it is difficult to reliably determine whether a commit 4565 * callback hasn't been called due to high load or due to a flawed 4566 * implementation. 4567 * 4568 * In practice, we will assume that if after a certain number of txgs a 4569 * commit callback hasn't been called, then most likely there's an 4570 * implementation bug.. 4571 */ 4572 tmp_cb = list_head(&zcl.zcl_callbacks); 4573 if (tmp_cb != NULL && 4574 (txg - ZTEST_COMMIT_CALLBACK_THRESH) > tmp_cb->zcd_txg) { 4575 fatal(0, "Commit callback threshold exceeded, oldest txg: %" 4576 PRIu64 ", open txg: %" PRIu64 "\n", tmp_cb->zcd_txg, txg); 4577 } 4578 4579 /* 4580 * Let's find the place to insert our callbacks. 4581 * 4582 * Even though the list is ordered by txg, it is possible for the 4583 * insertion point to not be the end because our txg may already be 4584 * quiescing at this point and other callbacks in the open txg 4585 * (from other objsets) may have sneaked in. 4586 */ 4587 tmp_cb = list_tail(&zcl.zcl_callbacks); 4588 while (tmp_cb != NULL && tmp_cb->zcd_txg > txg) 4589 tmp_cb = list_prev(&zcl.zcl_callbacks, tmp_cb); 4590 4591 /* Add the 3 callbacks to the list */ 4592 for (i = 0; i < 3; i++) { 4593 if (tmp_cb == NULL) 4594 list_insert_head(&zcl.zcl_callbacks, cb_data[i]); 4595 else 4596 list_insert_after(&zcl.zcl_callbacks, tmp_cb, 4597 cb_data[i]); 4598 4599 cb_data[i]->zcd_added = B_TRUE; 4600 VERIFY(!cb_data[i]->zcd_called); 4601 4602 tmp_cb = cb_data[i]; 4603 } 4604 4605 (void) mutex_unlock(&zcl.zcl_callbacks_lock); 4606 4607 dmu_tx_commit(tx); 4608 } 4609 4610 /* ARGSUSED */ 4611 void 4612 ztest_dsl_prop_get_set(ztest_ds_t *zd, uint64_t id) 4613 { 4614 zfs_prop_t proplist[] = { 4615 ZFS_PROP_CHECKSUM, 4616 ZFS_PROP_COMPRESSION, 4617 ZFS_PROP_COPIES, 4618 ZFS_PROP_DEDUP 4619 }; 4620 4621 (void) rw_rdlock(&ztest_name_lock); 4622 4623 for (int p = 0; p < sizeof (proplist) / sizeof (proplist[0]); p++) 4624 (void) ztest_dsl_prop_set_uint64(zd->zd_name, proplist[p], 4625 ztest_random_dsl_prop(proplist[p]), (int)ztest_random(2)); 4626 4627 (void) rw_unlock(&ztest_name_lock); 4628 } 4629 4630 /* ARGSUSED */ 4631 void 4632 ztest_spa_prop_get_set(ztest_ds_t *zd, uint64_t id) 4633 { 4634 nvlist_t *props = NULL; 4635 4636 (void) rw_rdlock(&ztest_name_lock); 4637 4638 (void) ztest_spa_prop_set_uint64(ZPOOL_PROP_DEDUPDITTO, 4639 ZIO_DEDUPDITTO_MIN + ztest_random(ZIO_DEDUPDITTO_MIN)); 4640 4641 VERIFY0(spa_prop_get(ztest_spa, &props)); 4642 4643 if (ztest_opts.zo_verbose >= 6) 4644 dump_nvlist(props, 4); 4645 4646 nvlist_free(props); 4647 4648 (void) rw_unlock(&ztest_name_lock); 4649 } 4650 4651 static int 4652 user_release_one(const char *snapname, const char *holdname) 4653 { 4654 nvlist_t *snaps, *holds; 4655 int error; 4656 4657 snaps = fnvlist_alloc(); 4658 holds = fnvlist_alloc(); 4659 fnvlist_add_boolean(holds, holdname); 4660 fnvlist_add_nvlist(snaps, snapname, holds); 4661 fnvlist_free(holds); 4662 error = dsl_dataset_user_release(snaps, NULL); 4663 fnvlist_free(snaps); 4664 return (error); 4665 } 4666 4667 /* 4668 * Test snapshot hold/release and deferred destroy. 4669 */ 4670 void 4671 ztest_dmu_snapshot_hold(ztest_ds_t *zd, uint64_t id) 4672 { 4673 int error; 4674 objset_t *os = zd->zd_os; 4675 objset_t *origin; 4676 char snapname[100]; 4677 char fullname[100]; 4678 char clonename[100]; 4679 char tag[100]; 4680 char osname[ZFS_MAX_DATASET_NAME_LEN]; 4681 nvlist_t *holds; 4682 4683 (void) rw_rdlock(&ztest_name_lock); 4684 4685 dmu_objset_name(os, osname); 4686 4687 (void) snprintf(snapname, sizeof (snapname), "sh1_%llu", id); 4688 (void) snprintf(fullname, sizeof (fullname), "%s@%s", osname, snapname); 4689 (void) snprintf(clonename, sizeof (clonename), 4690 "%s/ch1_%llu", osname, id); 4691 (void) snprintf(tag, sizeof (tag), "tag_%llu", id); 4692 4693 /* 4694 * Clean up from any previous run. 4695 */ 4696 error = dsl_destroy_head(clonename); 4697 if (error != ENOENT) 4698 ASSERT0(error); 4699 error = user_release_one(fullname, tag); 4700 if (error != ESRCH && error != ENOENT) 4701 ASSERT0(error); 4702 error = dsl_destroy_snapshot(fullname, B_FALSE); 4703 if (error != ENOENT) 4704 ASSERT0(error); 4705 4706 /* 4707 * Create snapshot, clone it, mark snap for deferred destroy, 4708 * destroy clone, verify snap was also destroyed. 4709 */ 4710 error = dmu_objset_snapshot_one(osname, snapname); 4711 if (error) { 4712 if (error == ENOSPC) { 4713 ztest_record_enospc("dmu_objset_snapshot"); 4714 goto out; 4715 } 4716 fatal(0, "dmu_objset_snapshot(%s) = %d", fullname, error); 4717 } 4718 4719 error = dmu_objset_clone(clonename, fullname); 4720 if (error) { 4721 if (error == ENOSPC) { 4722 ztest_record_enospc("dmu_objset_clone"); 4723 goto out; 4724 } 4725 fatal(0, "dmu_objset_clone(%s) = %d", clonename, error); 4726 } 4727 4728 error = dsl_destroy_snapshot(fullname, B_TRUE); 4729 if (error) { 4730 fatal(0, "dsl_destroy_snapshot(%s, B_TRUE) = %d", 4731 fullname, error); 4732 } 4733 4734 error = dsl_destroy_head(clonename); 4735 if (error) 4736 fatal(0, "dsl_destroy_head(%s) = %d", clonename, error); 4737 4738 error = dmu_objset_hold(fullname, FTAG, &origin); 4739 if (error != ENOENT) 4740 fatal(0, "dmu_objset_hold(%s) = %d", fullname, error); 4741 4742 /* 4743 * Create snapshot, add temporary hold, verify that we can't 4744 * destroy a held snapshot, mark for deferred destroy, 4745 * release hold, verify snapshot was destroyed. 4746 */ 4747 error = dmu_objset_snapshot_one(osname, snapname); 4748 if (error) { 4749 if (error == ENOSPC) { 4750 ztest_record_enospc("dmu_objset_snapshot"); 4751 goto out; 4752 } 4753 fatal(0, "dmu_objset_snapshot(%s) = %d", fullname, error); 4754 } 4755 4756 holds = fnvlist_alloc(); 4757 fnvlist_add_string(holds, fullname, tag); 4758 error = dsl_dataset_user_hold(holds, 0, NULL); 4759 fnvlist_free(holds); 4760 4761 if (error == ENOSPC) { 4762 ztest_record_enospc("dsl_dataset_user_hold"); 4763 goto out; 4764 } else if (error) { 4765 fatal(0, "dsl_dataset_user_hold(%s, %s) = %u", 4766 fullname, tag, error); 4767 } 4768 4769 error = dsl_destroy_snapshot(fullname, B_FALSE); 4770 if (error != EBUSY) { 4771 fatal(0, "dsl_destroy_snapshot(%s, B_FALSE) = %d", 4772 fullname, error); 4773 } 4774 4775 error = dsl_destroy_snapshot(fullname, B_TRUE); 4776 if (error) { 4777 fatal(0, "dsl_destroy_snapshot(%s, B_TRUE) = %d", 4778 fullname, error); 4779 } 4780 4781 error = user_release_one(fullname, tag); 4782 if (error) 4783 fatal(0, "user_release_one(%s, %s) = %d", fullname, tag, error); 4784 4785 VERIFY3U(dmu_objset_hold(fullname, FTAG, &origin), ==, ENOENT); 4786 4787 out: 4788 (void) rw_unlock(&ztest_name_lock); 4789 } 4790 4791 /* 4792 * Inject random faults into the on-disk data. 4793 */ 4794 /* ARGSUSED */ 4795 void 4796 ztest_fault_inject(ztest_ds_t *zd, uint64_t id) 4797 { 4798 ztest_shared_t *zs = ztest_shared; 4799 spa_t *spa = ztest_spa; 4800 int fd; 4801 uint64_t offset; 4802 uint64_t leaves; 4803 uint64_t bad = 0x1990c0ffeedecade; 4804 uint64_t top, leaf; 4805 char path0[MAXPATHLEN]; 4806 char pathrand[MAXPATHLEN]; 4807 size_t fsize; 4808 int bshift = SPA_MAXBLOCKSHIFT + 2; 4809 int iters = 1000; 4810 int maxfaults; 4811 int mirror_save; 4812 vdev_t *vd0 = NULL; 4813 uint64_t guid0 = 0; 4814 boolean_t islog = B_FALSE; 4815 4816 VERIFY(mutex_lock(&ztest_vdev_lock) == 0); 4817 maxfaults = MAXFAULTS(); 4818 leaves = MAX(zs->zs_mirrors, 1) * ztest_opts.zo_raidz; 4819 mirror_save = zs->zs_mirrors; 4820 VERIFY(mutex_unlock(&ztest_vdev_lock) == 0); 4821 4822 ASSERT(leaves >= 1); 4823 4824 /* 4825 * Grab the name lock as reader. There are some operations 4826 * which don't like to have their vdevs changed while 4827 * they are in progress (i.e. spa_change_guid). Those 4828 * operations will have grabbed the name lock as writer. 4829 */ 4830 (void) rw_rdlock(&ztest_name_lock); 4831 4832 /* 4833 * We need SCL_STATE here because we're going to look at vd0->vdev_tsd. 4834 */ 4835 spa_config_enter(spa, SCL_STATE, FTAG, RW_READER); 4836 4837 if (ztest_random(2) == 0) { 4838 /* 4839 * Inject errors on a normal data device or slog device. 4840 */ 4841 top = ztest_random_vdev_top(spa, B_TRUE); 4842 leaf = ztest_random(leaves) + zs->zs_splits; 4843 4844 /* 4845 * Generate paths to the first leaf in this top-level vdev, 4846 * and to the random leaf we selected. We'll induce transient 4847 * write failures and random online/offline activity on leaf 0, 4848 * and we'll write random garbage to the randomly chosen leaf. 4849 */ 4850 (void) snprintf(path0, sizeof (path0), ztest_dev_template, 4851 ztest_opts.zo_dir, ztest_opts.zo_pool, 4852 top * leaves + zs->zs_splits); 4853 (void) snprintf(pathrand, sizeof (pathrand), ztest_dev_template, 4854 ztest_opts.zo_dir, ztest_opts.zo_pool, 4855 top * leaves + leaf); 4856 4857 vd0 = vdev_lookup_by_path(spa->spa_root_vdev, path0); 4858 if (vd0 != NULL && vd0->vdev_top->vdev_islog) 4859 islog = B_TRUE; 4860 4861 /* 4862 * If the top-level vdev needs to be resilvered 4863 * then we only allow faults on the device that is 4864 * resilvering. 4865 */ 4866 if (vd0 != NULL && maxfaults != 1 && 4867 (!vdev_resilver_needed(vd0->vdev_top, NULL, NULL) || 4868 vd0->vdev_resilver_txg != 0)) { 4869 /* 4870 * Make vd0 explicitly claim to be unreadable, 4871 * or unwriteable, or reach behind its back 4872 * and close the underlying fd. We can do this if 4873 * maxfaults == 0 because we'll fail and reexecute, 4874 * and we can do it if maxfaults >= 2 because we'll 4875 * have enough redundancy. If maxfaults == 1, the 4876 * combination of this with injection of random data 4877 * corruption below exceeds the pool's fault tolerance. 4878 */ 4879 vdev_file_t *vf = vd0->vdev_tsd; 4880 4881 if (vf != NULL && ztest_random(3) == 0) { 4882 (void) close(vf->vf_vnode->v_fd); 4883 vf->vf_vnode->v_fd = -1; 4884 } else if (ztest_random(2) == 0) { 4885 vd0->vdev_cant_read = B_TRUE; 4886 } else { 4887 vd0->vdev_cant_write = B_TRUE; 4888 } 4889 guid0 = vd0->vdev_guid; 4890 } 4891 } else { 4892 /* 4893 * Inject errors on an l2cache device. 4894 */ 4895 spa_aux_vdev_t *sav = &spa->spa_l2cache; 4896 4897 if (sav->sav_count == 0) { 4898 spa_config_exit(spa, SCL_STATE, FTAG); 4899 (void) rw_unlock(&ztest_name_lock); 4900 return; 4901 } 4902 vd0 = sav->sav_vdevs[ztest_random(sav->sav_count)]; 4903 guid0 = vd0->vdev_guid; 4904 (void) strcpy(path0, vd0->vdev_path); 4905 (void) strcpy(pathrand, vd0->vdev_path); 4906 4907 leaf = 0; 4908 leaves = 1; 4909 maxfaults = INT_MAX; /* no limit on cache devices */ 4910 } 4911 4912 spa_config_exit(spa, SCL_STATE, FTAG); 4913 (void) rw_unlock(&ztest_name_lock); 4914 4915 /* 4916 * If we can tolerate two or more faults, or we're dealing 4917 * with a slog, randomly online/offline vd0. 4918 */ 4919 if ((maxfaults >= 2 || islog) && guid0 != 0) { 4920 if (ztest_random(10) < 6) { 4921 int flags = (ztest_random(2) == 0 ? 4922 ZFS_OFFLINE_TEMPORARY : 0); 4923 4924 /* 4925 * We have to grab the zs_name_lock as writer to 4926 * prevent a race between offlining a slog and 4927 * destroying a dataset. Offlining the slog will 4928 * grab a reference on the dataset which may cause 4929 * dmu_objset_destroy() to fail with EBUSY thus 4930 * leaving the dataset in an inconsistent state. 4931 */ 4932 if (islog) 4933 (void) rw_wrlock(&ztest_name_lock); 4934 4935 VERIFY(vdev_offline(spa, guid0, flags) != EBUSY); 4936 4937 if (islog) 4938 (void) rw_unlock(&ztest_name_lock); 4939 } else { 4940 /* 4941 * Ideally we would like to be able to randomly 4942 * call vdev_[on|off]line without holding locks 4943 * to force unpredictable failures but the side 4944 * effects of vdev_[on|off]line prevent us from 4945 * doing so. We grab the ztest_vdev_lock here to 4946 * prevent a race between injection testing and 4947 * aux_vdev removal. 4948 */ 4949 VERIFY(mutex_lock(&ztest_vdev_lock) == 0); 4950 (void) vdev_online(spa, guid0, 0, NULL); 4951 VERIFY(mutex_unlock(&ztest_vdev_lock) == 0); 4952 } 4953 } 4954 4955 if (maxfaults == 0) 4956 return; 4957 4958 /* 4959 * We have at least single-fault tolerance, so inject data corruption. 4960 */ 4961 fd = open(pathrand, O_RDWR); 4962 4963 if (fd == -1) /* we hit a gap in the device namespace */ 4964 return; 4965 4966 fsize = lseek(fd, 0, SEEK_END); 4967 4968 while (--iters != 0) { 4969 /* 4970 * The offset must be chosen carefully to ensure that 4971 * we do not inject a given logical block with errors 4972 * on two different leaf devices, because ZFS can not 4973 * tolerate that (if maxfaults==1). 4974 * 4975 * We divide each leaf into chunks of size 4976 * (# leaves * SPA_MAXBLOCKSIZE * 4). Within each chunk 4977 * there is a series of ranges to which we can inject errors. 4978 * Each range can accept errors on only a single leaf vdev. 4979 * The error injection ranges are separated by ranges 4980 * which we will not inject errors on any device (DMZs). 4981 * Each DMZ must be large enough such that a single block 4982 * can not straddle it, so that a single block can not be 4983 * a target in two different injection ranges (on different 4984 * leaf vdevs). 4985 * 4986 * For example, with 3 leaves, each chunk looks like: 4987 * 0 to 32M: injection range for leaf 0 4988 * 32M to 64M: DMZ - no injection allowed 4989 * 64M to 96M: injection range for leaf 1 4990 * 96M to 128M: DMZ - no injection allowed 4991 * 128M to 160M: injection range for leaf 2 4992 * 160M to 192M: DMZ - no injection allowed 4993 */ 4994 offset = ztest_random(fsize / (leaves << bshift)) * 4995 (leaves << bshift) + (leaf << bshift) + 4996 (ztest_random(1ULL << (bshift - 1)) & -8ULL); 4997 4998 /* 4999 * Only allow damage to the labels at one end of the vdev. 5000 * 5001 * If all labels are damaged, the device will be totally 5002 * inaccessible, which will result in loss of data, 5003 * because we also damage (parts of) the other side of 5004 * the mirror/raidz. 5005 * 5006 * Additionally, we will always have both an even and an 5007 * odd label, so that we can handle crashes in the 5008 * middle of vdev_config_sync(). 5009 */ 5010 if ((leaf & 1) == 0 && offset < VDEV_LABEL_START_SIZE) 5011 continue; 5012 5013 /* 5014 * The two end labels are stored at the "end" of the disk, but 5015 * the end of the disk (vdev_psize) is aligned to 5016 * sizeof (vdev_label_t). 5017 */ 5018 uint64_t psize = P2ALIGN(fsize, sizeof (vdev_label_t)); 5019 if ((leaf & 1) == 1 && 5020 offset + sizeof (bad) > psize - VDEV_LABEL_END_SIZE) 5021 continue; 5022 5023 VERIFY(mutex_lock(&ztest_vdev_lock) == 0); 5024 if (mirror_save != zs->zs_mirrors) { 5025 VERIFY(mutex_unlock(&ztest_vdev_lock) == 0); 5026 (void) close(fd); 5027 return; 5028 } 5029 5030 if (pwrite(fd, &bad, sizeof (bad), offset) != sizeof (bad)) 5031 fatal(1, "can't inject bad word at 0x%llx in %s", 5032 offset, pathrand); 5033 5034 VERIFY(mutex_unlock(&ztest_vdev_lock) == 0); 5035 5036 if (ztest_opts.zo_verbose >= 7) 5037 (void) printf("injected bad word into %s," 5038 " offset 0x%llx\n", pathrand, (u_longlong_t)offset); 5039 } 5040 5041 (void) close(fd); 5042 } 5043 5044 /* 5045 * Verify that DDT repair works as expected. 5046 */ 5047 void 5048 ztest_ddt_repair(ztest_ds_t *zd, uint64_t id) 5049 { 5050 ztest_shared_t *zs = ztest_shared; 5051 spa_t *spa = ztest_spa; 5052 objset_t *os = zd->zd_os; 5053 ztest_od_t od[1]; 5054 uint64_t object, blocksize, txg, pattern, psize; 5055 enum zio_checksum checksum = spa_dedup_checksum(spa); 5056 dmu_buf_t *db; 5057 dmu_tx_t *tx; 5058 abd_t *abd; 5059 blkptr_t blk; 5060 int copies = 2 * ZIO_DEDUPDITTO_MIN; 5061 5062 blocksize = ztest_random_blocksize(); 5063 blocksize = MIN(blocksize, 2048); /* because we write so many */ 5064 5065 ztest_od_init(&od[0], id, FTAG, 0, DMU_OT_UINT64_OTHER, blocksize, 0); 5066 5067 if (ztest_object_init(zd, od, sizeof (od), B_FALSE) != 0) 5068 return; 5069 5070 /* 5071 * Take the name lock as writer to prevent anyone else from changing 5072 * the pool and dataset properies we need to maintain during this test. 5073 */ 5074 (void) rw_wrlock(&ztest_name_lock); 5075 5076 if (ztest_dsl_prop_set_uint64(zd->zd_name, ZFS_PROP_DEDUP, checksum, 5077 B_FALSE) != 0 || 5078 ztest_dsl_prop_set_uint64(zd->zd_name, ZFS_PROP_COPIES, 1, 5079 B_FALSE) != 0) { 5080 (void) rw_unlock(&ztest_name_lock); 5081 return; 5082 } 5083 5084 dmu_objset_stats_t dds; 5085 dsl_pool_config_enter(dmu_objset_pool(os), FTAG); 5086 dmu_objset_fast_stat(os, &dds); 5087 dsl_pool_config_exit(dmu_objset_pool(os), FTAG); 5088 5089 object = od[0].od_object; 5090 blocksize = od[0].od_blocksize; 5091 pattern = zs->zs_guid ^ dds.dds_guid; 5092 5093 ASSERT(object != 0); 5094 5095 tx = dmu_tx_create(os); 5096 dmu_tx_hold_write(tx, object, 0, copies * blocksize); 5097 txg = ztest_tx_assign(tx, TXG_WAIT, FTAG); 5098 if (txg == 0) { 5099 (void) rw_unlock(&ztest_name_lock); 5100 return; 5101 } 5102 5103 /* 5104 * Write all the copies of our block. 5105 */ 5106 for (int i = 0; i < copies; i++) { 5107 uint64_t offset = i * blocksize; 5108 int error = dmu_buf_hold(os, object, offset, FTAG, &db, 5109 DMU_READ_NO_PREFETCH); 5110 if (error != 0) { 5111 fatal(B_FALSE, "dmu_buf_hold(%p, %llu, %llu) = %u", 5112 os, (long long)object, (long long) offset, error); 5113 } 5114 ASSERT(db->db_offset == offset); 5115 ASSERT(db->db_size == blocksize); 5116 ASSERT(ztest_pattern_match(db->db_data, db->db_size, pattern) || 5117 ztest_pattern_match(db->db_data, db->db_size, 0ULL)); 5118 dmu_buf_will_fill(db, tx); 5119 ztest_pattern_set(db->db_data, db->db_size, pattern); 5120 dmu_buf_rele(db, FTAG); 5121 } 5122 5123 dmu_tx_commit(tx); 5124 txg_wait_synced(spa_get_dsl(spa), txg); 5125 5126 /* 5127 * Find out what block we got. 5128 */ 5129 VERIFY0(dmu_buf_hold(os, object, 0, FTAG, &db, 5130 DMU_READ_NO_PREFETCH)); 5131 blk = *((dmu_buf_impl_t *)db)->db_blkptr; 5132 dmu_buf_rele(db, FTAG); 5133 5134 /* 5135 * Damage the block. Dedup-ditto will save us when we read it later. 5136 */ 5137 psize = BP_GET_PSIZE(&blk); 5138 abd = abd_alloc_linear(psize, B_TRUE); 5139 ztest_pattern_set(abd_to_buf(abd), psize, ~pattern); 5140 5141 (void) zio_wait(zio_rewrite(NULL, spa, 0, &blk, 5142 abd, psize, NULL, NULL, ZIO_PRIORITY_SYNC_WRITE, 5143 ZIO_FLAG_CANFAIL | ZIO_FLAG_INDUCE_DAMAGE, NULL)); 5144 5145 abd_free(abd); 5146 5147 (void) rw_unlock(&ztest_name_lock); 5148 } 5149 5150 /* 5151 * Scrub the pool. 5152 */ 5153 /* ARGSUSED */ 5154 void 5155 ztest_scrub(ztest_ds_t *zd, uint64_t id) 5156 { 5157 spa_t *spa = ztest_spa; 5158 5159 (void) spa_scan(spa, POOL_SCAN_SCRUB); 5160 (void) poll(NULL, 0, 100); /* wait a moment, then force a restart */ 5161 (void) spa_scan(spa, POOL_SCAN_SCRUB); 5162 } 5163 5164 /* 5165 * Change the guid for the pool. 5166 */ 5167 /* ARGSUSED */ 5168 void 5169 ztest_reguid(ztest_ds_t *zd, uint64_t id) 5170 { 5171 spa_t *spa = ztest_spa; 5172 uint64_t orig, load; 5173 int error; 5174 5175 orig = spa_guid(spa); 5176 load = spa_load_guid(spa); 5177 5178 (void) rw_wrlock(&ztest_name_lock); 5179 error = spa_change_guid(spa); 5180 (void) rw_unlock(&ztest_name_lock); 5181 5182 if (error != 0) 5183 return; 5184 5185 if (ztest_opts.zo_verbose >= 4) { 5186 (void) printf("Changed guid old %llu -> %llu\n", 5187 (u_longlong_t)orig, (u_longlong_t)spa_guid(spa)); 5188 } 5189 5190 VERIFY3U(orig, !=, spa_guid(spa)); 5191 VERIFY3U(load, ==, spa_load_guid(spa)); 5192 } 5193 5194 /* 5195 * Rename the pool to a different name and then rename it back. 5196 */ 5197 /* ARGSUSED */ 5198 void 5199 ztest_spa_rename(ztest_ds_t *zd, uint64_t id) 5200 { 5201 char *oldname, *newname; 5202 spa_t *spa; 5203 5204 (void) rw_wrlock(&ztest_name_lock); 5205 5206 oldname = ztest_opts.zo_pool; 5207 newname = umem_alloc(strlen(oldname) + 5, UMEM_NOFAIL); 5208 (void) strcpy(newname, oldname); 5209 (void) strcat(newname, "_tmp"); 5210 5211 /* 5212 * Do the rename 5213 */ 5214 VERIFY3U(0, ==, spa_rename(oldname, newname)); 5215 5216 /* 5217 * Try to open it under the old name, which shouldn't exist 5218 */ 5219 VERIFY3U(ENOENT, ==, spa_open(oldname, &spa, FTAG)); 5220 5221 /* 5222 * Open it under the new name and make sure it's still the same spa_t. 5223 */ 5224 VERIFY3U(0, ==, spa_open(newname, &spa, FTAG)); 5225 5226 ASSERT(spa == ztest_spa); 5227 spa_close(spa, FTAG); 5228 5229 /* 5230 * Rename it back to the original 5231 */ 5232 VERIFY3U(0, ==, spa_rename(newname, oldname)); 5233 5234 /* 5235 * Make sure it can still be opened 5236 */ 5237 VERIFY3U(0, ==, spa_open(oldname, &spa, FTAG)); 5238 5239 ASSERT(spa == ztest_spa); 5240 spa_close(spa, FTAG); 5241 5242 umem_free(newname, strlen(newname) + 1); 5243 5244 (void) rw_unlock(&ztest_name_lock); 5245 } 5246 5247 /* 5248 * Verify pool integrity by running zdb. 5249 */ 5250 static void 5251 ztest_run_zdb(char *pool) 5252 { 5253 int status; 5254 char zdb[MAXPATHLEN + MAXNAMELEN + 20]; 5255 char zbuf[1024]; 5256 char *bin; 5257 char *ztest; 5258 char *isa; 5259 int isalen; 5260 FILE *fp; 5261 5262 (void) realpath(getexecname(), zdb); 5263 5264 /* zdb lives in /usr/sbin, while ztest lives in /usr/bin */ 5265 bin = strstr(zdb, "/usr/bin/"); 5266 ztest = strstr(bin, "/ztest"); 5267 isa = bin + 8; 5268 isalen = ztest - isa; 5269 isa = strdup(isa); 5270 /* LINTED */ 5271 (void) sprintf(bin, 5272 "/usr/sbin%.*s/zdb -bcc%s%s -G -d -U %s %s", 5273 isalen, 5274 isa, 5275 ztest_opts.zo_verbose >= 3 ? "s" : "", 5276 ztest_opts.zo_verbose >= 4 ? "v" : "", 5277 spa_config_path, 5278 pool); 5279 free(isa); 5280 5281 if (ztest_opts.zo_verbose >= 5) 5282 (void) printf("Executing %s\n", strstr(zdb, "zdb ")); 5283 5284 fp = popen(zdb, "r"); 5285 5286 while (fgets(zbuf, sizeof (zbuf), fp) != NULL) 5287 if (ztest_opts.zo_verbose >= 3) 5288 (void) printf("%s", zbuf); 5289 5290 status = pclose(fp); 5291 5292 if (status == 0) 5293 return; 5294 5295 ztest_dump_core = 0; 5296 if (WIFEXITED(status)) 5297 fatal(0, "'%s' exit code %d", zdb, WEXITSTATUS(status)); 5298 else 5299 fatal(0, "'%s' died with signal %d", zdb, WTERMSIG(status)); 5300 } 5301 5302 static void 5303 ztest_walk_pool_directory(char *header) 5304 { 5305 spa_t *spa = NULL; 5306 5307 if (ztest_opts.zo_verbose >= 6) 5308 (void) printf("%s\n", header); 5309 5310 mutex_enter(&spa_namespace_lock); 5311 while ((spa = spa_next(spa)) != NULL) 5312 if (ztest_opts.zo_verbose >= 6) 5313 (void) printf("\t%s\n", spa_name(spa)); 5314 mutex_exit(&spa_namespace_lock); 5315 } 5316 5317 static void 5318 ztest_spa_import_export(char *oldname, char *newname) 5319 { 5320 nvlist_t *config, *newconfig; 5321 uint64_t pool_guid; 5322 spa_t *spa; 5323 int error; 5324 5325 if (ztest_opts.zo_verbose >= 4) { 5326 (void) printf("import/export: old = %s, new = %s\n", 5327 oldname, newname); 5328 } 5329 5330 /* 5331 * Clean up from previous runs. 5332 */ 5333 (void) spa_destroy(newname); 5334 5335 /* 5336 * Get the pool's configuration and guid. 5337 */ 5338 VERIFY3U(0, ==, spa_open(oldname, &spa, FTAG)); 5339 5340 /* 5341 * Kick off a scrub to tickle scrub/export races. 5342 */ 5343 if (ztest_random(2) == 0) 5344 (void) spa_scan(spa, POOL_SCAN_SCRUB); 5345 5346 pool_guid = spa_guid(spa); 5347 spa_close(spa, FTAG); 5348 5349 ztest_walk_pool_directory("pools before export"); 5350 5351 /* 5352 * Export it. 5353 */ 5354 VERIFY3U(0, ==, spa_export(oldname, &config, B_FALSE, B_FALSE)); 5355 5356 ztest_walk_pool_directory("pools after export"); 5357 5358 /* 5359 * Try to import it. 5360 */ 5361 newconfig = spa_tryimport(config); 5362 ASSERT(newconfig != NULL); 5363 nvlist_free(newconfig); 5364 5365 /* 5366 * Import it under the new name. 5367 */ 5368 error = spa_import(newname, config, NULL, 0); 5369 if (error != 0) { 5370 dump_nvlist(config, 0); 5371 fatal(B_FALSE, "couldn't import pool %s as %s: error %u", 5372 oldname, newname, error); 5373 } 5374 5375 ztest_walk_pool_directory("pools after import"); 5376 5377 /* 5378 * Try to import it again -- should fail with EEXIST. 5379 */ 5380 VERIFY3U(EEXIST, ==, spa_import(newname, config, NULL, 0)); 5381 5382 /* 5383 * Try to import it under a different name -- should fail with EEXIST. 5384 */ 5385 VERIFY3U(EEXIST, ==, spa_import(oldname, config, NULL, 0)); 5386 5387 /* 5388 * Verify that the pool is no longer visible under the old name. 5389 */ 5390 VERIFY3U(ENOENT, ==, spa_open(oldname, &spa, FTAG)); 5391 5392 /* 5393 * Verify that we can open and close the pool using the new name. 5394 */ 5395 VERIFY3U(0, ==, spa_open(newname, &spa, FTAG)); 5396 ASSERT(pool_guid == spa_guid(spa)); 5397 spa_close(spa, FTAG); 5398 5399 nvlist_free(config); 5400 } 5401 5402 static void 5403 ztest_resume(spa_t *spa) 5404 { 5405 if (spa_suspended(spa) && ztest_opts.zo_verbose >= 6) 5406 (void) printf("resuming from suspended state\n"); 5407 spa_vdev_state_enter(spa, SCL_NONE); 5408 vdev_clear(spa, NULL); 5409 (void) spa_vdev_state_exit(spa, NULL, 0); 5410 (void) zio_resume(spa); 5411 } 5412 5413 static void * 5414 ztest_resume_thread(void *arg) 5415 { 5416 spa_t *spa = arg; 5417 5418 while (!ztest_exiting) { 5419 if (spa_suspended(spa)) 5420 ztest_resume(spa); 5421 (void) poll(NULL, 0, 100); 5422 5423 /* 5424 * Periodically change the zfs_compressed_arc_enabled setting. 5425 */ 5426 if (ztest_random(10) == 0) 5427 zfs_compressed_arc_enabled = ztest_random(2); 5428 5429 /* 5430 * Periodically change the zfs_abd_scatter_enabled setting. 5431 */ 5432 if (ztest_random(10) == 0) 5433 zfs_abd_scatter_enabled = ztest_random(2); 5434 } 5435 return (NULL); 5436 } 5437 5438 static void * 5439 ztest_deadman_thread(void *arg) 5440 { 5441 ztest_shared_t *zs = arg; 5442 spa_t *spa = ztest_spa; 5443 hrtime_t delta, total = 0; 5444 5445 for (;;) { 5446 delta = zs->zs_thread_stop - zs->zs_thread_start + 5447 MSEC2NSEC(zfs_deadman_synctime_ms); 5448 5449 (void) poll(NULL, 0, (int)NSEC2MSEC(delta)); 5450 5451 /* 5452 * If the pool is suspended then fail immediately. Otherwise, 5453 * check to see if the pool is making any progress. If 5454 * vdev_deadman() discovers that there hasn't been any recent 5455 * I/Os then it will end up aborting the tests. 5456 */ 5457 if (spa_suspended(spa) || spa->spa_root_vdev == NULL) { 5458 fatal(0, "aborting test after %llu seconds because " 5459 "pool has transitioned to a suspended state.", 5460 zfs_deadman_synctime_ms / 1000); 5461 return (NULL); 5462 } 5463 vdev_deadman(spa->spa_root_vdev); 5464 5465 total += zfs_deadman_synctime_ms/1000; 5466 (void) printf("ztest has been running for %lld seconds\n", 5467 total); 5468 } 5469 } 5470 5471 static void 5472 ztest_execute(int test, ztest_info_t *zi, uint64_t id) 5473 { 5474 ztest_ds_t *zd = &ztest_ds[id % ztest_opts.zo_datasets]; 5475 ztest_shared_callstate_t *zc = ZTEST_GET_SHARED_CALLSTATE(test); 5476 hrtime_t functime = gethrtime(); 5477 5478 for (int i = 0; i < zi->zi_iters; i++) 5479 zi->zi_func(zd, id); 5480 5481 functime = gethrtime() - functime; 5482 5483 atomic_add_64(&zc->zc_count, 1); 5484 atomic_add_64(&zc->zc_time, functime); 5485 5486 if (ztest_opts.zo_verbose >= 4) { 5487 Dl_info dli; 5488 (void) dladdr((void *)zi->zi_func, &dli); 5489 (void) printf("%6.2f sec in %s\n", 5490 (double)functime / NANOSEC, dli.dli_sname); 5491 } 5492 } 5493 5494 static void * 5495 ztest_thread(void *arg) 5496 { 5497 int rand; 5498 uint64_t id = (uintptr_t)arg; 5499 ztest_shared_t *zs = ztest_shared; 5500 uint64_t call_next; 5501 hrtime_t now; 5502 ztest_info_t *zi; 5503 ztest_shared_callstate_t *zc; 5504 5505 while ((now = gethrtime()) < zs->zs_thread_stop) { 5506 /* 5507 * See if it's time to force a crash. 5508 */ 5509 if (now > zs->zs_thread_kill) 5510 ztest_kill(zs); 5511 5512 /* 5513 * If we're getting ENOSPC with some regularity, stop. 5514 */ 5515 if (zs->zs_enospc_count > 10) 5516 break; 5517 5518 /* 5519 * Pick a random function to execute. 5520 */ 5521 rand = ztest_random(ZTEST_FUNCS); 5522 zi = &ztest_info[rand]; 5523 zc = ZTEST_GET_SHARED_CALLSTATE(rand); 5524 call_next = zc->zc_next; 5525 5526 if (now >= call_next && 5527 atomic_cas_64(&zc->zc_next, call_next, call_next + 5528 ztest_random(2 * zi->zi_interval[0] + 1)) == call_next) { 5529 ztest_execute(rand, zi, id); 5530 } 5531 } 5532 5533 return (NULL); 5534 } 5535 5536 static void 5537 ztest_dataset_name(char *dsname, char *pool, int d) 5538 { 5539 (void) snprintf(dsname, ZFS_MAX_DATASET_NAME_LEN, "%s/ds_%d", pool, d); 5540 } 5541 5542 static void 5543 ztest_dataset_destroy(int d) 5544 { 5545 char name[ZFS_MAX_DATASET_NAME_LEN]; 5546 5547 ztest_dataset_name(name, ztest_opts.zo_pool, d); 5548 5549 if (ztest_opts.zo_verbose >= 3) 5550 (void) printf("Destroying %s to free up space\n", name); 5551 5552 /* 5553 * Cleanup any non-standard clones and snapshots. In general, 5554 * ztest thread t operates on dataset (t % zopt_datasets), 5555 * so there may be more than one thing to clean up. 5556 */ 5557 for (int t = d; t < ztest_opts.zo_threads; 5558 t += ztest_opts.zo_datasets) { 5559 ztest_dsl_dataset_cleanup(name, t); 5560 } 5561 5562 (void) dmu_objset_find(name, ztest_objset_destroy_cb, NULL, 5563 DS_FIND_SNAPSHOTS | DS_FIND_CHILDREN); 5564 } 5565 5566 static void 5567 ztest_dataset_dirobj_verify(ztest_ds_t *zd) 5568 { 5569 uint64_t usedobjs, dirobjs, scratch; 5570 5571 /* 5572 * ZTEST_DIROBJ is the object directory for the entire dataset. 5573 * Therefore, the number of objects in use should equal the 5574 * number of ZTEST_DIROBJ entries, +1 for ZTEST_DIROBJ itself. 5575 * If not, we have an object leak. 5576 * 5577 * Note that we can only check this in ztest_dataset_open(), 5578 * when the open-context and syncing-context values agree. 5579 * That's because zap_count() returns the open-context value, 5580 * while dmu_objset_space() returns the rootbp fill count. 5581 */ 5582 VERIFY3U(0, ==, zap_count(zd->zd_os, ZTEST_DIROBJ, &dirobjs)); 5583 dmu_objset_space(zd->zd_os, &scratch, &scratch, &usedobjs, &scratch); 5584 ASSERT3U(dirobjs + 1, ==, usedobjs); 5585 } 5586 5587 static int 5588 ztest_dataset_open(int d) 5589 { 5590 ztest_ds_t *zd = &ztest_ds[d]; 5591 uint64_t committed_seq = ZTEST_GET_SHARED_DS(d)->zd_seq; 5592 objset_t *os; 5593 zilog_t *zilog; 5594 char name[ZFS_MAX_DATASET_NAME_LEN]; 5595 int error; 5596 5597 ztest_dataset_name(name, ztest_opts.zo_pool, d); 5598 5599 (void) rw_rdlock(&ztest_name_lock); 5600 5601 error = ztest_dataset_create(name); 5602 if (error == ENOSPC) { 5603 (void) rw_unlock(&ztest_name_lock); 5604 ztest_record_enospc(FTAG); 5605 return (error); 5606 } 5607 ASSERT(error == 0 || error == EEXIST); 5608 5609 VERIFY0(dmu_objset_own(name, DMU_OST_OTHER, B_FALSE, zd, &os)); 5610 (void) rw_unlock(&ztest_name_lock); 5611 5612 ztest_zd_init(zd, ZTEST_GET_SHARED_DS(d), os); 5613 5614 zilog = zd->zd_zilog; 5615 5616 if (zilog->zl_header->zh_claim_lr_seq != 0 && 5617 zilog->zl_header->zh_claim_lr_seq < committed_seq) 5618 fatal(0, "missing log records: claimed %llu < committed %llu", 5619 zilog->zl_header->zh_claim_lr_seq, committed_seq); 5620 5621 ztest_dataset_dirobj_verify(zd); 5622 5623 zil_replay(os, zd, ztest_replay_vector); 5624 5625 ztest_dataset_dirobj_verify(zd); 5626 5627 if (ztest_opts.zo_verbose >= 6) 5628 (void) printf("%s replay %llu blocks, %llu records, seq %llu\n", 5629 zd->zd_name, 5630 (u_longlong_t)zilog->zl_parse_blk_count, 5631 (u_longlong_t)zilog->zl_parse_lr_count, 5632 (u_longlong_t)zilog->zl_replaying_seq); 5633 5634 zilog = zil_open(os, ztest_get_data); 5635 5636 if (zilog->zl_replaying_seq != 0 && 5637 zilog->zl_replaying_seq < committed_seq) 5638 fatal(0, "missing log records: replayed %llu < committed %llu", 5639 zilog->zl_replaying_seq, committed_seq); 5640 5641 return (0); 5642 } 5643 5644 static void 5645 ztest_dataset_close(int d) 5646 { 5647 ztest_ds_t *zd = &ztest_ds[d]; 5648 5649 zil_close(zd->zd_zilog); 5650 dmu_objset_disown(zd->zd_os, zd); 5651 5652 ztest_zd_fini(zd); 5653 } 5654 5655 /* 5656 * Kick off threads to run tests on all datasets in parallel. 5657 */ 5658 static void 5659 ztest_run(ztest_shared_t *zs) 5660 { 5661 thread_t *tid; 5662 spa_t *spa; 5663 objset_t *os; 5664 thread_t resume_tid; 5665 int error; 5666 5667 ztest_exiting = B_FALSE; 5668 5669 /* 5670 * Initialize parent/child shared state. 5671 */ 5672 VERIFY(_mutex_init(&ztest_vdev_lock, USYNC_THREAD, NULL) == 0); 5673 VERIFY(rwlock_init(&ztest_name_lock, USYNC_THREAD, NULL) == 0); 5674 5675 zs->zs_thread_start = gethrtime(); 5676 zs->zs_thread_stop = 5677 zs->zs_thread_start + ztest_opts.zo_passtime * NANOSEC; 5678 zs->zs_thread_stop = MIN(zs->zs_thread_stop, zs->zs_proc_stop); 5679 zs->zs_thread_kill = zs->zs_thread_stop; 5680 if (ztest_random(100) < ztest_opts.zo_killrate) { 5681 zs->zs_thread_kill -= 5682 ztest_random(ztest_opts.zo_passtime * NANOSEC); 5683 } 5684 5685 (void) _mutex_init(&zcl.zcl_callbacks_lock, USYNC_THREAD, NULL); 5686 5687 list_create(&zcl.zcl_callbacks, sizeof (ztest_cb_data_t), 5688 offsetof(ztest_cb_data_t, zcd_node)); 5689 5690 /* 5691 * Open our pool. 5692 */ 5693 kernel_init(FREAD | FWRITE); 5694 VERIFY0(spa_open(ztest_opts.zo_pool, &spa, FTAG)); 5695 spa->spa_debug = B_TRUE; 5696 metaslab_preload_limit = ztest_random(20) + 1; 5697 ztest_spa = spa; 5698 5699 dmu_objset_stats_t dds; 5700 VERIFY0(dmu_objset_own(ztest_opts.zo_pool, 5701 DMU_OST_ANY, B_TRUE, FTAG, &os)); 5702 dsl_pool_config_enter(dmu_objset_pool(os), FTAG); 5703 dmu_objset_fast_stat(os, &dds); 5704 dsl_pool_config_exit(dmu_objset_pool(os), FTAG); 5705 zs->zs_guid = dds.dds_guid; 5706 dmu_objset_disown(os, FTAG); 5707 5708 spa->spa_dedup_ditto = 2 * ZIO_DEDUPDITTO_MIN; 5709 5710 /* 5711 * We don't expect the pool to suspend unless maxfaults == 0, 5712 * in which case ztest_fault_inject() temporarily takes away 5713 * the only valid replica. 5714 */ 5715 if (MAXFAULTS() == 0) 5716 spa->spa_failmode = ZIO_FAILURE_MODE_WAIT; 5717 else 5718 spa->spa_failmode = ZIO_FAILURE_MODE_PANIC; 5719 5720 /* 5721 * Create a thread to periodically resume suspended I/O. 5722 */ 5723 VERIFY(thr_create(0, 0, ztest_resume_thread, spa, THR_BOUND, 5724 &resume_tid) == 0); 5725 5726 /* 5727 * Create a deadman thread to abort() if we hang. 5728 */ 5729 VERIFY(thr_create(0, 0, ztest_deadman_thread, zs, THR_BOUND, 5730 NULL) == 0); 5731 5732 /* 5733 * Verify that we can safely inquire about about any object, 5734 * whether it's allocated or not. To make it interesting, 5735 * we probe a 5-wide window around each power of two. 5736 * This hits all edge cases, including zero and the max. 5737 */ 5738 for (int t = 0; t < 64; t++) { 5739 for (int d = -5; d <= 5; d++) { 5740 error = dmu_object_info(spa->spa_meta_objset, 5741 (1ULL << t) + d, NULL); 5742 ASSERT(error == 0 || error == ENOENT || 5743 error == EINVAL); 5744 } 5745 } 5746 5747 /* 5748 * If we got any ENOSPC errors on the previous run, destroy something. 5749 */ 5750 if (zs->zs_enospc_count != 0) { 5751 int d = ztest_random(ztest_opts.zo_datasets); 5752 ztest_dataset_destroy(d); 5753 } 5754 zs->zs_enospc_count = 0; 5755 5756 tid = umem_zalloc(ztest_opts.zo_threads * sizeof (thread_t), 5757 UMEM_NOFAIL); 5758 5759 if (ztest_opts.zo_verbose >= 4) 5760 (void) printf("starting main threads...\n"); 5761 5762 /* 5763 * Kick off all the tests that run in parallel. 5764 */ 5765 for (int t = 0; t < ztest_opts.zo_threads; t++) { 5766 if (t < ztest_opts.zo_datasets && 5767 ztest_dataset_open(t) != 0) 5768 return; 5769 VERIFY(thr_create(0, 0, ztest_thread, (void *)(uintptr_t)t, 5770 THR_BOUND, &tid[t]) == 0); 5771 } 5772 5773 /* 5774 * Wait for all of the tests to complete. We go in reverse order 5775 * so we don't close datasets while threads are still using them. 5776 */ 5777 for (int t = ztest_opts.zo_threads - 1; t >= 0; t--) { 5778 VERIFY(thr_join(tid[t], NULL, NULL) == 0); 5779 if (t < ztest_opts.zo_datasets) 5780 ztest_dataset_close(t); 5781 } 5782 5783 txg_wait_synced(spa_get_dsl(spa), 0); 5784 5785 zs->zs_alloc = metaslab_class_get_alloc(spa_normal_class(spa)); 5786 zs->zs_space = metaslab_class_get_space(spa_normal_class(spa)); 5787 zfs_dbgmsg_print(FTAG); 5788 5789 umem_free(tid, ztest_opts.zo_threads * sizeof (thread_t)); 5790 5791 /* Kill the resume thread */ 5792 ztest_exiting = B_TRUE; 5793 VERIFY(thr_join(resume_tid, NULL, NULL) == 0); 5794 ztest_resume(spa); 5795 5796 /* 5797 * Right before closing the pool, kick off a bunch of async I/O; 5798 * spa_close() should wait for it to complete. 5799 */ 5800 for (uint64_t object = 1; object < 50; object++) { 5801 dmu_prefetch(spa->spa_meta_objset, object, 0, 0, 1ULL << 20, 5802 ZIO_PRIORITY_SYNC_READ); 5803 } 5804 5805 spa_close(spa, FTAG); 5806 5807 /* 5808 * Verify that we can loop over all pools. 5809 */ 5810 mutex_enter(&spa_namespace_lock); 5811 for (spa = spa_next(NULL); spa != NULL; spa = spa_next(spa)) 5812 if (ztest_opts.zo_verbose > 3) 5813 (void) printf("spa_next: found %s\n", spa_name(spa)); 5814 mutex_exit(&spa_namespace_lock); 5815 5816 /* 5817 * Verify that we can export the pool and reimport it under a 5818 * different name. 5819 */ 5820 if (ztest_random(2) == 0) { 5821 char name[ZFS_MAX_DATASET_NAME_LEN]; 5822 (void) snprintf(name, sizeof (name), "%s_import", 5823 ztest_opts.zo_pool); 5824 ztest_spa_import_export(ztest_opts.zo_pool, name); 5825 ztest_spa_import_export(name, ztest_opts.zo_pool); 5826 } 5827 5828 kernel_fini(); 5829 5830 list_destroy(&zcl.zcl_callbacks); 5831 5832 (void) _mutex_destroy(&zcl.zcl_callbacks_lock); 5833 5834 (void) rwlock_destroy(&ztest_name_lock); 5835 (void) _mutex_destroy(&ztest_vdev_lock); 5836 } 5837 5838 static void 5839 ztest_freeze(void) 5840 { 5841 ztest_ds_t *zd = &ztest_ds[0]; 5842 spa_t *spa; 5843 int numloops = 0; 5844 5845 if (ztest_opts.zo_verbose >= 3) 5846 (void) printf("testing spa_freeze()...\n"); 5847 5848 kernel_init(FREAD | FWRITE); 5849 VERIFY3U(0, ==, spa_open(ztest_opts.zo_pool, &spa, FTAG)); 5850 VERIFY3U(0, ==, ztest_dataset_open(0)); 5851 spa->spa_debug = B_TRUE; 5852 ztest_spa = spa; 5853 5854 /* 5855 * Force the first log block to be transactionally allocated. 5856 * We have to do this before we freeze the pool -- otherwise 5857 * the log chain won't be anchored. 5858 */ 5859 while (BP_IS_HOLE(&zd->zd_zilog->zl_header->zh_log)) { 5860 ztest_dmu_object_alloc_free(zd, 0); 5861 zil_commit(zd->zd_zilog, 0); 5862 } 5863 5864 txg_wait_synced(spa_get_dsl(spa), 0); 5865 5866 /* 5867 * Freeze the pool. This stops spa_sync() from doing anything, 5868 * so that the only way to record changes from now on is the ZIL. 5869 */ 5870 spa_freeze(spa); 5871 5872 /* 5873 * Because it is hard to predict how much space a write will actually 5874 * require beforehand, we leave ourselves some fudge space to write over 5875 * capacity. 5876 */ 5877 uint64_t capacity = metaslab_class_get_space(spa_normal_class(spa)) / 2; 5878 5879 /* 5880 * Run tests that generate log records but don't alter the pool config 5881 * or depend on DSL sync tasks (snapshots, objset create/destroy, etc). 5882 * We do a txg_wait_synced() after each iteration to force the txg 5883 * to increase well beyond the last synced value in the uberblock. 5884 * The ZIL should be OK with that. 5885 * 5886 * Run a random number of times less than zo_maxloops and ensure we do 5887 * not run out of space on the pool. 5888 */ 5889 while (ztest_random(10) != 0 && 5890 numloops++ < ztest_opts.zo_maxloops && 5891 metaslab_class_get_alloc(spa_normal_class(spa)) < capacity) { 5892 ztest_od_t od; 5893 ztest_od_init(&od, 0, FTAG, 0, DMU_OT_UINT64_OTHER, 0, 0); 5894 VERIFY0(ztest_object_init(zd, &od, sizeof (od), B_FALSE)); 5895 ztest_io(zd, od.od_object, 5896 ztest_random(ZTEST_RANGE_LOCKS) << SPA_MAXBLOCKSHIFT); 5897 txg_wait_synced(spa_get_dsl(spa), 0); 5898 } 5899 5900 /* 5901 * Commit all of the changes we just generated. 5902 */ 5903 zil_commit(zd->zd_zilog, 0); 5904 txg_wait_synced(spa_get_dsl(spa), 0); 5905 5906 /* 5907 * Close our dataset and close the pool. 5908 */ 5909 ztest_dataset_close(0); 5910 spa_close(spa, FTAG); 5911 kernel_fini(); 5912 5913 /* 5914 * Open and close the pool and dataset to induce log replay. 5915 */ 5916 kernel_init(FREAD | FWRITE); 5917 VERIFY3U(0, ==, spa_open(ztest_opts.zo_pool, &spa, FTAG)); 5918 ASSERT(spa_freeze_txg(spa) == UINT64_MAX); 5919 VERIFY3U(0, ==, ztest_dataset_open(0)); 5920 ztest_dataset_close(0); 5921 5922 spa->spa_debug = B_TRUE; 5923 ztest_spa = spa; 5924 txg_wait_synced(spa_get_dsl(spa), 0); 5925 ztest_reguid(NULL, 0); 5926 5927 spa_close(spa, FTAG); 5928 kernel_fini(); 5929 } 5930 5931 void 5932 print_time(hrtime_t t, char *timebuf) 5933 { 5934 hrtime_t s = t / NANOSEC; 5935 hrtime_t m = s / 60; 5936 hrtime_t h = m / 60; 5937 hrtime_t d = h / 24; 5938 5939 s -= m * 60; 5940 m -= h * 60; 5941 h -= d * 24; 5942 5943 timebuf[0] = '\0'; 5944 5945 if (d) 5946 (void) sprintf(timebuf, 5947 "%llud%02lluh%02llum%02llus", d, h, m, s); 5948 else if (h) 5949 (void) sprintf(timebuf, "%lluh%02llum%02llus", h, m, s); 5950 else if (m) 5951 (void) sprintf(timebuf, "%llum%02llus", m, s); 5952 else 5953 (void) sprintf(timebuf, "%llus", s); 5954 } 5955 5956 static nvlist_t * 5957 make_random_props() 5958 { 5959 nvlist_t *props; 5960 5961 VERIFY(nvlist_alloc(&props, NV_UNIQUE_NAME, 0) == 0); 5962 if (ztest_random(2) == 0) 5963 return (props); 5964 VERIFY(nvlist_add_uint64(props, "autoreplace", 1) == 0); 5965 5966 return (props); 5967 } 5968 5969 /* 5970 * Create a storage pool with the given name and initial vdev size. 5971 * Then test spa_freeze() functionality. 5972 */ 5973 static void 5974 ztest_init(ztest_shared_t *zs) 5975 { 5976 spa_t *spa; 5977 nvlist_t *nvroot, *props; 5978 5979 VERIFY(_mutex_init(&ztest_vdev_lock, USYNC_THREAD, NULL) == 0); 5980 VERIFY(rwlock_init(&ztest_name_lock, USYNC_THREAD, NULL) == 0); 5981 5982 kernel_init(FREAD | FWRITE); 5983 5984 /* 5985 * Create the storage pool. 5986 */ 5987 (void) spa_destroy(ztest_opts.zo_pool); 5988 ztest_shared->zs_vdev_next_leaf = 0; 5989 zs->zs_splits = 0; 5990 zs->zs_mirrors = ztest_opts.zo_mirrors; 5991 nvroot = make_vdev_root(NULL, NULL, NULL, ztest_opts.zo_vdev_size, 0, 5992 0, ztest_opts.zo_raidz, zs->zs_mirrors, 1); 5993 props = make_random_props(); 5994 for (int i = 0; i < SPA_FEATURES; i++) { 5995 char buf[1024]; 5996 (void) snprintf(buf, sizeof (buf), "feature@%s", 5997 spa_feature_table[i].fi_uname); 5998 VERIFY3U(0, ==, nvlist_add_uint64(props, buf, 0)); 5999 } 6000 VERIFY3U(0, ==, spa_create(ztest_opts.zo_pool, nvroot, props, NULL)); 6001 nvlist_free(nvroot); 6002 nvlist_free(props); 6003 6004 VERIFY3U(0, ==, spa_open(ztest_opts.zo_pool, &spa, FTAG)); 6005 zs->zs_metaslab_sz = 6006 1ULL << spa->spa_root_vdev->vdev_child[0]->vdev_ms_shift; 6007 6008 spa_close(spa, FTAG); 6009 6010 kernel_fini(); 6011 6012 ztest_run_zdb(ztest_opts.zo_pool); 6013 6014 ztest_freeze(); 6015 6016 ztest_run_zdb(ztest_opts.zo_pool); 6017 6018 (void) rwlock_destroy(&ztest_name_lock); 6019 (void) _mutex_destroy(&ztest_vdev_lock); 6020 } 6021 6022 static void 6023 setup_data_fd(void) 6024 { 6025 static char ztest_name_data[] = "/tmp/ztest.data.XXXXXX"; 6026 6027 ztest_fd_data = mkstemp(ztest_name_data); 6028 ASSERT3S(ztest_fd_data, >=, 0); 6029 (void) unlink(ztest_name_data); 6030 } 6031 6032 6033 static int 6034 shared_data_size(ztest_shared_hdr_t *hdr) 6035 { 6036 int size; 6037 6038 size = hdr->zh_hdr_size; 6039 size += hdr->zh_opts_size; 6040 size += hdr->zh_size; 6041 size += hdr->zh_stats_size * hdr->zh_stats_count; 6042 size += hdr->zh_ds_size * hdr->zh_ds_count; 6043 6044 return (size); 6045 } 6046 6047 static void 6048 setup_hdr(void) 6049 { 6050 int size; 6051 ztest_shared_hdr_t *hdr; 6052 6053 hdr = (void *)mmap(0, P2ROUNDUP(sizeof (*hdr), getpagesize()), 6054 PROT_READ | PROT_WRITE, MAP_SHARED, ztest_fd_data, 0); 6055 ASSERT(hdr != MAP_FAILED); 6056 6057 VERIFY3U(0, ==, ftruncate(ztest_fd_data, sizeof (ztest_shared_hdr_t))); 6058 6059 hdr->zh_hdr_size = sizeof (ztest_shared_hdr_t); 6060 hdr->zh_opts_size = sizeof (ztest_shared_opts_t); 6061 hdr->zh_size = sizeof (ztest_shared_t); 6062 hdr->zh_stats_size = sizeof (ztest_shared_callstate_t); 6063 hdr->zh_stats_count = ZTEST_FUNCS; 6064 hdr->zh_ds_size = sizeof (ztest_shared_ds_t); 6065 hdr->zh_ds_count = ztest_opts.zo_datasets; 6066 6067 size = shared_data_size(hdr); 6068 VERIFY3U(0, ==, ftruncate(ztest_fd_data, size)); 6069 6070 (void) munmap((caddr_t)hdr, P2ROUNDUP(sizeof (*hdr), getpagesize())); 6071 } 6072 6073 static void 6074 setup_data(void) 6075 { 6076 int size, offset; 6077 ztest_shared_hdr_t *hdr; 6078 uint8_t *buf; 6079 6080 hdr = (void *)mmap(0, P2ROUNDUP(sizeof (*hdr), getpagesize()), 6081 PROT_READ, MAP_SHARED, ztest_fd_data, 0); 6082 ASSERT(hdr != MAP_FAILED); 6083 6084 size = shared_data_size(hdr); 6085 6086 (void) munmap((caddr_t)hdr, P2ROUNDUP(sizeof (*hdr), getpagesize())); 6087 hdr = ztest_shared_hdr = (void *)mmap(0, P2ROUNDUP(size, getpagesize()), 6088 PROT_READ | PROT_WRITE, MAP_SHARED, ztest_fd_data, 0); 6089 ASSERT(hdr != MAP_FAILED); 6090 buf = (uint8_t *)hdr; 6091 6092 offset = hdr->zh_hdr_size; 6093 ztest_shared_opts = (void *)&buf[offset]; 6094 offset += hdr->zh_opts_size; 6095 ztest_shared = (void *)&buf[offset]; 6096 offset += hdr->zh_size; 6097 ztest_shared_callstate = (void *)&buf[offset]; 6098 offset += hdr->zh_stats_size * hdr->zh_stats_count; 6099 ztest_shared_ds = (void *)&buf[offset]; 6100 } 6101 6102 static boolean_t 6103 exec_child(char *cmd, char *libpath, boolean_t ignorekill, int *statusp) 6104 { 6105 pid_t pid; 6106 int status; 6107 char *cmdbuf = NULL; 6108 6109 pid = fork(); 6110 6111 if (cmd == NULL) { 6112 cmdbuf = umem_alloc(MAXPATHLEN, UMEM_NOFAIL); 6113 (void) strlcpy(cmdbuf, getexecname(), MAXPATHLEN); 6114 cmd = cmdbuf; 6115 } 6116 6117 if (pid == -1) 6118 fatal(1, "fork failed"); 6119 6120 if (pid == 0) { /* child */ 6121 char *emptyargv[2] = { cmd, NULL }; 6122 char fd_data_str[12]; 6123 6124 struct rlimit rl = { 1024, 1024 }; 6125 (void) setrlimit(RLIMIT_NOFILE, &rl); 6126 6127 (void) close(ztest_fd_rand); 6128 VERIFY3U(11, >=, 6129 snprintf(fd_data_str, 12, "%d", ztest_fd_data)); 6130 VERIFY0(setenv("ZTEST_FD_DATA", fd_data_str, 1)); 6131 6132 (void) enable_extended_FILE_stdio(-1, -1); 6133 if (libpath != NULL) 6134 VERIFY(0 == setenv("LD_LIBRARY_PATH", libpath, 1)); 6135 (void) execv(cmd, emptyargv); 6136 ztest_dump_core = B_FALSE; 6137 fatal(B_TRUE, "exec failed: %s", cmd); 6138 } 6139 6140 if (cmdbuf != NULL) { 6141 umem_free(cmdbuf, MAXPATHLEN); 6142 cmd = NULL; 6143 } 6144 6145 while (waitpid(pid, &status, 0) != pid) 6146 continue; 6147 if (statusp != NULL) 6148 *statusp = status; 6149 6150 if (WIFEXITED(status)) { 6151 if (WEXITSTATUS(status) != 0) { 6152 (void) fprintf(stderr, "child exited with code %d\n", 6153 WEXITSTATUS(status)); 6154 exit(2); 6155 } 6156 return (B_FALSE); 6157 } else if (WIFSIGNALED(status)) { 6158 if (!ignorekill || WTERMSIG(status) != SIGKILL) { 6159 (void) fprintf(stderr, "child died with signal %d\n", 6160 WTERMSIG(status)); 6161 exit(3); 6162 } 6163 return (B_TRUE); 6164 } else { 6165 (void) fprintf(stderr, "something strange happened to child\n"); 6166 exit(4); 6167 /* NOTREACHED */ 6168 } 6169 } 6170 6171 static void 6172 ztest_run_init(void) 6173 { 6174 ztest_shared_t *zs = ztest_shared; 6175 6176 ASSERT(ztest_opts.zo_init != 0); 6177 6178 /* 6179 * Blow away any existing copy of zpool.cache 6180 */ 6181 (void) remove(spa_config_path); 6182 6183 /* 6184 * Create and initialize our storage pool. 6185 */ 6186 for (int i = 1; i <= ztest_opts.zo_init; i++) { 6187 bzero(zs, sizeof (ztest_shared_t)); 6188 if (ztest_opts.zo_verbose >= 3 && 6189 ztest_opts.zo_init != 1) { 6190 (void) printf("ztest_init(), pass %d\n", i); 6191 } 6192 ztest_init(zs); 6193 } 6194 } 6195 6196 int 6197 main(int argc, char **argv) 6198 { 6199 int kills = 0; 6200 int iters = 0; 6201 int older = 0; 6202 int newer = 0; 6203 ztest_shared_t *zs; 6204 ztest_info_t *zi; 6205 ztest_shared_callstate_t *zc; 6206 char timebuf[100]; 6207 char numbuf[NN_NUMBUF_SZ]; 6208 spa_t *spa; 6209 char *cmd; 6210 boolean_t hasalt; 6211 char *fd_data_str = getenv("ZTEST_FD_DATA"); 6212 6213 (void) setvbuf(stdout, NULL, _IOLBF, 0); 6214 6215 dprintf_setup(&argc, argv); 6216 zfs_deadman_synctime_ms = 300000; 6217 6218 ztest_fd_rand = open("/dev/urandom", O_RDONLY); 6219 ASSERT3S(ztest_fd_rand, >=, 0); 6220 6221 if (!fd_data_str) { 6222 process_options(argc, argv); 6223 6224 setup_data_fd(); 6225 setup_hdr(); 6226 setup_data(); 6227 bcopy(&ztest_opts, ztest_shared_opts, 6228 sizeof (*ztest_shared_opts)); 6229 } else { 6230 ztest_fd_data = atoi(fd_data_str); 6231 setup_data(); 6232 bcopy(ztest_shared_opts, &ztest_opts, sizeof (ztest_opts)); 6233 } 6234 ASSERT3U(ztest_opts.zo_datasets, ==, ztest_shared_hdr->zh_ds_count); 6235 6236 /* Override location of zpool.cache */ 6237 VERIFY3U(asprintf((char **)&spa_config_path, "%s/zpool.cache", 6238 ztest_opts.zo_dir), !=, -1); 6239 6240 ztest_ds = umem_alloc(ztest_opts.zo_datasets * sizeof (ztest_ds_t), 6241 UMEM_NOFAIL); 6242 zs = ztest_shared; 6243 6244 if (fd_data_str) { 6245 metaslab_gang_bang = ztest_opts.zo_metaslab_gang_bang; 6246 metaslab_df_alloc_threshold = 6247 zs->zs_metaslab_df_alloc_threshold; 6248 6249 if (zs->zs_do_init) 6250 ztest_run_init(); 6251 else 6252 ztest_run(zs); 6253 exit(0); 6254 } 6255 6256 hasalt = (strlen(ztest_opts.zo_alt_ztest) != 0); 6257 6258 if (ztest_opts.zo_verbose >= 1) { 6259 (void) printf("%llu vdevs, %d datasets, %d threads," 6260 " %llu seconds...\n", 6261 (u_longlong_t)ztest_opts.zo_vdevs, 6262 ztest_opts.zo_datasets, 6263 ztest_opts.zo_threads, 6264 (u_longlong_t)ztest_opts.zo_time); 6265 } 6266 6267 cmd = umem_alloc(MAXNAMELEN, UMEM_NOFAIL); 6268 (void) strlcpy(cmd, getexecname(), MAXNAMELEN); 6269 6270 zs->zs_do_init = B_TRUE; 6271 if (strlen(ztest_opts.zo_alt_ztest) != 0) { 6272 if (ztest_opts.zo_verbose >= 1) { 6273 (void) printf("Executing older ztest for " 6274 "initialization: %s\n", ztest_opts.zo_alt_ztest); 6275 } 6276 VERIFY(!exec_child(ztest_opts.zo_alt_ztest, 6277 ztest_opts.zo_alt_libpath, B_FALSE, NULL)); 6278 } else { 6279 VERIFY(!exec_child(NULL, NULL, B_FALSE, NULL)); 6280 } 6281 zs->zs_do_init = B_FALSE; 6282 6283 zs->zs_proc_start = gethrtime(); 6284 zs->zs_proc_stop = zs->zs_proc_start + ztest_opts.zo_time * NANOSEC; 6285 6286 for (int f = 0; f < ZTEST_FUNCS; f++) { 6287 zi = &ztest_info[f]; 6288 zc = ZTEST_GET_SHARED_CALLSTATE(f); 6289 if (zs->zs_proc_start + zi->zi_interval[0] > zs->zs_proc_stop) 6290 zc->zc_next = UINT64_MAX; 6291 else 6292 zc->zc_next = zs->zs_proc_start + 6293 ztest_random(2 * zi->zi_interval[0] + 1); 6294 } 6295 6296 /* 6297 * Run the tests in a loop. These tests include fault injection 6298 * to verify that self-healing data works, and forced crashes 6299 * to verify that we never lose on-disk consistency. 6300 */ 6301 while (gethrtime() < zs->zs_proc_stop) { 6302 int status; 6303 boolean_t killed; 6304 6305 /* 6306 * Initialize the workload counters for each function. 6307 */ 6308 for (int f = 0; f < ZTEST_FUNCS; f++) { 6309 zc = ZTEST_GET_SHARED_CALLSTATE(f); 6310 zc->zc_count = 0; 6311 zc->zc_time = 0; 6312 } 6313 6314 /* Set the allocation switch size */ 6315 zs->zs_metaslab_df_alloc_threshold = 6316 ztest_random(zs->zs_metaslab_sz / 4) + 1; 6317 6318 if (!hasalt || ztest_random(2) == 0) { 6319 if (hasalt && ztest_opts.zo_verbose >= 1) { 6320 (void) printf("Executing newer ztest: %s\n", 6321 cmd); 6322 } 6323 newer++; 6324 killed = exec_child(cmd, NULL, B_TRUE, &status); 6325 } else { 6326 if (hasalt && ztest_opts.zo_verbose >= 1) { 6327 (void) printf("Executing older ztest: %s\n", 6328 ztest_opts.zo_alt_ztest); 6329 } 6330 older++; 6331 killed = exec_child(ztest_opts.zo_alt_ztest, 6332 ztest_opts.zo_alt_libpath, B_TRUE, &status); 6333 } 6334 6335 if (killed) 6336 kills++; 6337 iters++; 6338 6339 if (ztest_opts.zo_verbose >= 1) { 6340 hrtime_t now = gethrtime(); 6341 6342 now = MIN(now, zs->zs_proc_stop); 6343 print_time(zs->zs_proc_stop - now, timebuf); 6344 nicenum(zs->zs_space, numbuf, sizeof (numbuf)); 6345 6346 (void) printf("Pass %3d, %8s, %3llu ENOSPC, " 6347 "%4.1f%% of %5s used, %3.0f%% done, %8s to go\n", 6348 iters, 6349 WIFEXITED(status) ? "Complete" : "SIGKILL", 6350 (u_longlong_t)zs->zs_enospc_count, 6351 100.0 * zs->zs_alloc / zs->zs_space, 6352 numbuf, 6353 100.0 * (now - zs->zs_proc_start) / 6354 (ztest_opts.zo_time * NANOSEC), timebuf); 6355 } 6356 6357 if (ztest_opts.zo_verbose >= 2) { 6358 (void) printf("\nWorkload summary:\n\n"); 6359 (void) printf("%7s %9s %s\n", 6360 "Calls", "Time", "Function"); 6361 (void) printf("%7s %9s %s\n", 6362 "-----", "----", "--------"); 6363 for (int f = 0; f < ZTEST_FUNCS; f++) { 6364 Dl_info dli; 6365 6366 zi = &ztest_info[f]; 6367 zc = ZTEST_GET_SHARED_CALLSTATE(f); 6368 print_time(zc->zc_time, timebuf); 6369 (void) dladdr((void *)zi->zi_func, &dli); 6370 (void) printf("%7llu %9s %s\n", 6371 (u_longlong_t)zc->zc_count, timebuf, 6372 dli.dli_sname); 6373 } 6374 (void) printf("\n"); 6375 } 6376 6377 /* 6378 * It's possible that we killed a child during a rename test, 6379 * in which case we'll have a 'ztest_tmp' pool lying around 6380 * instead of 'ztest'. Do a blind rename in case this happened. 6381 */ 6382 kernel_init(FREAD); 6383 if (spa_open(ztest_opts.zo_pool, &spa, FTAG) == 0) { 6384 spa_close(spa, FTAG); 6385 } else { 6386 char tmpname[ZFS_MAX_DATASET_NAME_LEN]; 6387 kernel_fini(); 6388 kernel_init(FREAD | FWRITE); 6389 (void) snprintf(tmpname, sizeof (tmpname), "%s_tmp", 6390 ztest_opts.zo_pool); 6391 (void) spa_rename(tmpname, ztest_opts.zo_pool); 6392 } 6393 kernel_fini(); 6394 6395 ztest_run_zdb(ztest_opts.zo_pool); 6396 } 6397 6398 if (ztest_opts.zo_verbose >= 1) { 6399 if (hasalt) { 6400 (void) printf("%d runs of older ztest: %s\n", older, 6401 ztest_opts.zo_alt_ztest); 6402 (void) printf("%d runs of newer ztest: %s\n", newer, 6403 cmd); 6404 } 6405 (void) printf("%d killed, %d completed, %.0f%% kill rate\n", 6406 kills, iters - kills, (100.0 * kills) / MAX(1, iters)); 6407 } 6408 6409 umem_free(cmd, MAXNAMELEN); 6410 6411 return (0); 6412 } 6413