ztest.c revision 276081
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, 2014 by Delphix. All rights reserved. 24 * Copyright 2011 Nexenta Systems, Inc. All rights reserved. 25 * Copyright (c) 2012 Martin Matuska <mm@FreeBSD.org>. All rights reserved. 26 * Copyright (c) 2013 Steven Hartland. All rights reserved. 27 */ 28 29/* 30 * The objective of this program is to provide a DMU/ZAP/SPA stress test 31 * that runs entirely in userland, is easy to use, and easy to extend. 32 * 33 * The overall design of the ztest program is as follows: 34 * 35 * (1) For each major functional area (e.g. adding vdevs to a pool, 36 * creating and destroying datasets, reading and writing objects, etc) 37 * we have a simple routine to test that functionality. These 38 * individual routines do not have to do anything "stressful". 39 * 40 * (2) We turn these simple functionality tests into a stress test by 41 * running them all in parallel, with as many threads as desired, 42 * and spread across as many datasets, objects, and vdevs as desired. 43 * 44 * (3) While all this is happening, we inject faults into the pool to 45 * verify that self-healing data really works. 46 * 47 * (4) Every time we open a dataset, we change its checksum and compression 48 * functions. Thus even individual objects vary from block to block 49 * in which checksum they use and whether they're compressed. 50 * 51 * (5) To verify that we never lose on-disk consistency after a crash, 52 * we run the entire test in a child of the main process. 53 * At random times, the child self-immolates with a SIGKILL. 54 * This is the software equivalent of pulling the power cord. 55 * The parent then runs the test again, using the existing 56 * storage pool, as many times as desired. If backwards compatibility 57 * testing is enabled ztest will sometimes run the "older" version 58 * of ztest after a SIGKILL. 59 * 60 * (6) To verify that we don't have future leaks or temporal incursions, 61 * many of the functional tests record the transaction group number 62 * as part of their data. When reading old data, they verify that 63 * the transaction group number is less than the current, open txg. 64 * If you add a new test, please do this if applicable. 65 * 66 * When run with no arguments, ztest runs for about five minutes and 67 * produces no output if successful. To get a little bit of information, 68 * specify -V. To get more information, specify -VV, and so on. 69 * 70 * To turn this into an overnight stress test, use -T to specify run time. 71 * 72 * You can ask more more vdevs [-v], datasets [-d], or threads [-t] 73 * to increase the pool capacity, fanout, and overall stress level. 74 * 75 * Use the -k option to set the desired frequency of kills. 76 * 77 * When ztest invokes itself it passes all relevant information through a 78 * temporary file which is mmap-ed in the child process. This allows shared 79 * memory to survive the exec syscall. The ztest_shared_hdr_t struct is always 80 * stored at offset 0 of this file and contains information on the size and 81 * number of shared structures in the file. The information stored in this file 82 * must remain backwards compatible with older versions of ztest so that 83 * ztest can invoke them during backwards compatibility testing (-B). 84 */ 85 86#include <sys/zfs_context.h> 87#include <sys/spa.h> 88#include <sys/dmu.h> 89#include <sys/txg.h> 90#include <sys/dbuf.h> 91#include <sys/zap.h> 92#include <sys/dmu_objset.h> 93#include <sys/poll.h> 94#include <sys/stat.h> 95#include <sys/time.h> 96#include <sys/wait.h> 97#include <sys/mman.h> 98#include <sys/resource.h> 99#include <sys/zio.h> 100#include <sys/zil.h> 101#include <sys/zil_impl.h> 102#include <sys/vdev_impl.h> 103#include <sys/vdev_file.h> 104#include <sys/spa_impl.h> 105#include <sys/metaslab_impl.h> 106#include <sys/dsl_prop.h> 107#include <sys/dsl_dataset.h> 108#include <sys/dsl_destroy.h> 109#include <sys/dsl_scan.h> 110#include <sys/zio_checksum.h> 111#include <sys/refcount.h> 112#include <sys/zfeature.h> 113#include <sys/dsl_userhold.h> 114#include <stdio.h> 115#include <stdio_ext.h> 116#include <stdlib.h> 117#include <unistd.h> 118#include <signal.h> 119#include <umem.h> 120#include <dlfcn.h> 121#include <ctype.h> 122#include <math.h> 123#include <errno.h> 124#include <sys/fs/zfs.h> 125#include <libnvpair.h> 126 127static int ztest_fd_data = -1; 128static int ztest_fd_rand = -1; 129 130typedef struct ztest_shared_hdr { 131 uint64_t zh_hdr_size; 132 uint64_t zh_opts_size; 133 uint64_t zh_size; 134 uint64_t zh_stats_size; 135 uint64_t zh_stats_count; 136 uint64_t zh_ds_size; 137 uint64_t zh_ds_count; 138} ztest_shared_hdr_t; 139 140static ztest_shared_hdr_t *ztest_shared_hdr; 141 142typedef struct ztest_shared_opts { 143 char zo_pool[MAXNAMELEN]; 144 char zo_dir[MAXNAMELEN]; 145 char zo_alt_ztest[MAXNAMELEN]; 146 char zo_alt_libpath[MAXNAMELEN]; 147 uint64_t zo_vdevs; 148 uint64_t zo_vdevtime; 149 size_t zo_vdev_size; 150 int zo_ashift; 151 int zo_mirrors; 152 int zo_raidz; 153 int zo_raidz_parity; 154 int zo_datasets; 155 int zo_threads; 156 uint64_t zo_passtime; 157 uint64_t zo_killrate; 158 int zo_verbose; 159 int zo_init; 160 uint64_t zo_time; 161 uint64_t zo_maxloops; 162 uint64_t zo_metaslab_gang_bang; 163} ztest_shared_opts_t; 164 165static const ztest_shared_opts_t ztest_opts_defaults = { 166 .zo_pool = { 'z', 't', 'e', 's', 't', '\0' }, 167 .zo_dir = { '/', 't', 'm', 'p', '\0' }, 168 .zo_alt_ztest = { '\0' }, 169 .zo_alt_libpath = { '\0' }, 170 .zo_vdevs = 5, 171 .zo_ashift = SPA_MINBLOCKSHIFT, 172 .zo_mirrors = 2, 173 .zo_raidz = 4, 174 .zo_raidz_parity = 1, 175 .zo_vdev_size = SPA_MINDEVSIZE * 2, 176 .zo_datasets = 7, 177 .zo_threads = 23, 178 .zo_passtime = 60, /* 60 seconds */ 179 .zo_killrate = 70, /* 70% kill rate */ 180 .zo_verbose = 0, 181 .zo_init = 1, 182 .zo_time = 300, /* 5 minutes */ 183 .zo_maxloops = 50, /* max loops during spa_freeze() */ 184 .zo_metaslab_gang_bang = 32 << 10 185}; 186 187extern uint64_t metaslab_gang_bang; 188extern uint64_t metaslab_df_alloc_threshold; 189extern uint64_t zfs_deadman_synctime_ms; 190extern int metaslab_preload_limit; 191 192static ztest_shared_opts_t *ztest_shared_opts; 193static ztest_shared_opts_t ztest_opts; 194 195typedef struct ztest_shared_ds { 196 uint64_t zd_seq; 197} ztest_shared_ds_t; 198 199static ztest_shared_ds_t *ztest_shared_ds; 200#define ZTEST_GET_SHARED_DS(d) (&ztest_shared_ds[d]) 201 202#define BT_MAGIC 0x123456789abcdefULL 203#define MAXFAULTS() \ 204 (MAX(zs->zs_mirrors, 1) * (ztest_opts.zo_raidz_parity + 1) - 1) 205 206enum ztest_io_type { 207 ZTEST_IO_WRITE_TAG, 208 ZTEST_IO_WRITE_PATTERN, 209 ZTEST_IO_WRITE_ZEROES, 210 ZTEST_IO_TRUNCATE, 211 ZTEST_IO_SETATTR, 212 ZTEST_IO_REWRITE, 213 ZTEST_IO_TYPES 214}; 215 216typedef struct ztest_block_tag { 217 uint64_t bt_magic; 218 uint64_t bt_objset; 219 uint64_t bt_object; 220 uint64_t bt_offset; 221 uint64_t bt_gen; 222 uint64_t bt_txg; 223 uint64_t bt_crtxg; 224} ztest_block_tag_t; 225 226typedef struct bufwad { 227 uint64_t bw_index; 228 uint64_t bw_txg; 229 uint64_t bw_data; 230} bufwad_t; 231 232/* 233 * XXX -- fix zfs range locks to be generic so we can use them here. 234 */ 235typedef enum { 236 RL_READER, 237 RL_WRITER, 238 RL_APPEND 239} rl_type_t; 240 241typedef struct rll { 242 void *rll_writer; 243 int rll_readers; 244 mutex_t rll_lock; 245 cond_t rll_cv; 246} rll_t; 247 248typedef struct rl { 249 uint64_t rl_object; 250 uint64_t rl_offset; 251 uint64_t rl_size; 252 rll_t *rl_lock; 253} rl_t; 254 255#define ZTEST_RANGE_LOCKS 64 256#define ZTEST_OBJECT_LOCKS 64 257 258/* 259 * Object descriptor. Used as a template for object lookup/create/remove. 260 */ 261typedef struct ztest_od { 262 uint64_t od_dir; 263 uint64_t od_object; 264 dmu_object_type_t od_type; 265 dmu_object_type_t od_crtype; 266 uint64_t od_blocksize; 267 uint64_t od_crblocksize; 268 uint64_t od_gen; 269 uint64_t od_crgen; 270 char od_name[MAXNAMELEN]; 271} ztest_od_t; 272 273/* 274 * Per-dataset state. 275 */ 276typedef struct ztest_ds { 277 ztest_shared_ds_t *zd_shared; 278 objset_t *zd_os; 279 rwlock_t zd_zilog_lock; 280 zilog_t *zd_zilog; 281 ztest_od_t *zd_od; /* debugging aid */ 282 char zd_name[MAXNAMELEN]; 283 mutex_t zd_dirobj_lock; 284 rll_t zd_object_lock[ZTEST_OBJECT_LOCKS]; 285 rll_t zd_range_lock[ZTEST_RANGE_LOCKS]; 286} ztest_ds_t; 287 288/* 289 * Per-iteration state. 290 */ 291typedef void ztest_func_t(ztest_ds_t *zd, uint64_t id); 292 293typedef struct ztest_info { 294 ztest_func_t *zi_func; /* test function */ 295 uint64_t zi_iters; /* iterations per execution */ 296 uint64_t *zi_interval; /* execute every <interval> seconds */ 297} ztest_info_t; 298 299typedef struct ztest_shared_callstate { 300 uint64_t zc_count; /* per-pass count */ 301 uint64_t zc_time; /* per-pass time */ 302 uint64_t zc_next; /* next time to call this function */ 303} ztest_shared_callstate_t; 304 305static ztest_shared_callstate_t *ztest_shared_callstate; 306#define ZTEST_GET_SHARED_CALLSTATE(c) (&ztest_shared_callstate[c]) 307 308/* 309 * Note: these aren't static because we want dladdr() to work. 310 */ 311ztest_func_t ztest_dmu_read_write; 312ztest_func_t ztest_dmu_write_parallel; 313ztest_func_t ztest_dmu_object_alloc_free; 314ztest_func_t ztest_dmu_commit_callbacks; 315ztest_func_t ztest_zap; 316ztest_func_t ztest_zap_parallel; 317ztest_func_t ztest_zil_commit; 318ztest_func_t ztest_zil_remount; 319ztest_func_t ztest_dmu_read_write_zcopy; 320ztest_func_t ztest_dmu_objset_create_destroy; 321ztest_func_t ztest_dmu_prealloc; 322ztest_func_t ztest_fzap; 323ztest_func_t ztest_dmu_snapshot_create_destroy; 324ztest_func_t ztest_dsl_prop_get_set; 325ztest_func_t ztest_spa_prop_get_set; 326ztest_func_t ztest_spa_create_destroy; 327ztest_func_t ztest_fault_inject; 328ztest_func_t ztest_ddt_repair; 329ztest_func_t ztest_dmu_snapshot_hold; 330ztest_func_t ztest_spa_rename; 331ztest_func_t ztest_scrub; 332ztest_func_t ztest_dsl_dataset_promote_busy; 333ztest_func_t ztest_vdev_attach_detach; 334ztest_func_t ztest_vdev_LUN_growth; 335ztest_func_t ztest_vdev_add_remove; 336ztest_func_t ztest_vdev_aux_add_remove; 337ztest_func_t ztest_split_pool; 338ztest_func_t ztest_reguid; 339ztest_func_t ztest_spa_upgrade; 340 341uint64_t zopt_always = 0ULL * NANOSEC; /* all the time */ 342uint64_t zopt_incessant = 1ULL * NANOSEC / 10; /* every 1/10 second */ 343uint64_t zopt_often = 1ULL * NANOSEC; /* every second */ 344uint64_t zopt_sometimes = 10ULL * NANOSEC; /* every 10 seconds */ 345uint64_t zopt_rarely = 60ULL * NANOSEC; /* every 60 seconds */ 346 347ztest_info_t ztest_info[] = { 348 { ztest_dmu_read_write, 1, &zopt_always }, 349 { ztest_dmu_write_parallel, 10, &zopt_always }, 350 { ztest_dmu_object_alloc_free, 1, &zopt_always }, 351 { ztest_dmu_commit_callbacks, 1, &zopt_always }, 352 { ztest_zap, 30, &zopt_always }, 353 { ztest_zap_parallel, 100, &zopt_always }, 354 { ztest_split_pool, 1, &zopt_always }, 355 { ztest_zil_commit, 1, &zopt_incessant }, 356 { ztest_zil_remount, 1, &zopt_sometimes }, 357 { ztest_dmu_read_write_zcopy, 1, &zopt_often }, 358 { ztest_dmu_objset_create_destroy, 1, &zopt_often }, 359 { ztest_dsl_prop_get_set, 1, &zopt_often }, 360 { ztest_spa_prop_get_set, 1, &zopt_sometimes }, 361#if 0 362 { ztest_dmu_prealloc, 1, &zopt_sometimes }, 363#endif 364 { ztest_fzap, 1, &zopt_sometimes }, 365 { ztest_dmu_snapshot_create_destroy, 1, &zopt_sometimes }, 366 { ztest_spa_create_destroy, 1, &zopt_sometimes }, 367 { ztest_fault_inject, 1, &zopt_sometimes }, 368 { ztest_ddt_repair, 1, &zopt_sometimes }, 369 { ztest_dmu_snapshot_hold, 1, &zopt_sometimes }, 370 { ztest_reguid, 1, &zopt_rarely }, 371 { ztest_spa_rename, 1, &zopt_rarely }, 372 { ztest_scrub, 1, &zopt_rarely }, 373 { ztest_spa_upgrade, 1, &zopt_rarely }, 374 { ztest_dsl_dataset_promote_busy, 1, &zopt_rarely }, 375 { ztest_vdev_attach_detach, 1, &zopt_sometimes }, 376 { ztest_vdev_LUN_growth, 1, &zopt_rarely }, 377 { ztest_vdev_add_remove, 1, 378 &ztest_opts.zo_vdevtime }, 379 { ztest_vdev_aux_add_remove, 1, 380 &ztest_opts.zo_vdevtime }, 381}; 382 383#define ZTEST_FUNCS (sizeof (ztest_info) / sizeof (ztest_info_t)) 384 385/* 386 * The following struct is used to hold a list of uncalled commit callbacks. 387 * The callbacks are ordered by txg number. 388 */ 389typedef struct ztest_cb_list { 390 mutex_t zcl_callbacks_lock; 391 list_t zcl_callbacks; 392} ztest_cb_list_t; 393 394/* 395 * Stuff we need to share writably between parent and child. 396 */ 397typedef struct ztest_shared { 398 boolean_t zs_do_init; 399 hrtime_t zs_proc_start; 400 hrtime_t zs_proc_stop; 401 hrtime_t zs_thread_start; 402 hrtime_t zs_thread_stop; 403 hrtime_t zs_thread_kill; 404 uint64_t zs_enospc_count; 405 uint64_t zs_vdev_next_leaf; 406 uint64_t zs_vdev_aux; 407 uint64_t zs_alloc; 408 uint64_t zs_space; 409 uint64_t zs_splits; 410 uint64_t zs_mirrors; 411 uint64_t zs_metaslab_sz; 412 uint64_t zs_metaslab_df_alloc_threshold; 413 uint64_t zs_guid; 414} ztest_shared_t; 415 416#define ID_PARALLEL -1ULL 417 418static char ztest_dev_template[] = "%s/%s.%llua"; 419static char ztest_aux_template[] = "%s/%s.%s.%llu"; 420ztest_shared_t *ztest_shared; 421 422static spa_t *ztest_spa = NULL; 423static ztest_ds_t *ztest_ds; 424 425static mutex_t ztest_vdev_lock; 426 427/* 428 * The ztest_name_lock protects the pool and dataset namespace used by 429 * the individual tests. To modify the namespace, consumers must grab 430 * this lock as writer. Grabbing the lock as reader will ensure that the 431 * namespace does not change while the lock is held. 432 */ 433static rwlock_t ztest_name_lock; 434 435static boolean_t ztest_dump_core = B_TRUE; 436static boolean_t ztest_exiting; 437 438/* Global commit callback list */ 439static ztest_cb_list_t zcl; 440 441enum ztest_object { 442 ZTEST_META_DNODE = 0, 443 ZTEST_DIROBJ, 444 ZTEST_OBJECTS 445}; 446 447static void usage(boolean_t) __NORETURN; 448 449/* 450 * These libumem hooks provide a reasonable set of defaults for the allocator's 451 * debugging facilities. 452 */ 453const char * 454_umem_debug_init() 455{ 456 return ("default,verbose"); /* $UMEM_DEBUG setting */ 457} 458 459const char * 460_umem_logging_init(void) 461{ 462 return ("fail,contents"); /* $UMEM_LOGGING setting */ 463} 464 465#define FATAL_MSG_SZ 1024 466 467char *fatal_msg; 468 469static void 470fatal(int do_perror, char *message, ...) 471{ 472 va_list args; 473 int save_errno = errno; 474 char buf[FATAL_MSG_SZ]; 475 476 (void) fflush(stdout); 477 478 va_start(args, message); 479 (void) sprintf(buf, "ztest: "); 480 /* LINTED */ 481 (void) vsprintf(buf + strlen(buf), message, args); 482 va_end(args); 483 if (do_perror) { 484 (void) snprintf(buf + strlen(buf), FATAL_MSG_SZ - strlen(buf), 485 ": %s", strerror(save_errno)); 486 } 487 (void) fprintf(stderr, "%s\n", buf); 488 fatal_msg = buf; /* to ease debugging */ 489 if (ztest_dump_core) 490 abort(); 491 exit(3); 492} 493 494static int 495str2shift(const char *buf) 496{ 497 const char *ends = "BKMGTPEZ"; 498 int i; 499 500 if (buf[0] == '\0') 501 return (0); 502 for (i = 0; i < strlen(ends); i++) { 503 if (toupper(buf[0]) == ends[i]) 504 break; 505 } 506 if (i == strlen(ends)) { 507 (void) fprintf(stderr, "ztest: invalid bytes suffix: %s\n", 508 buf); 509 usage(B_FALSE); 510 } 511 if (buf[1] == '\0' || (toupper(buf[1]) == 'B' && buf[2] == '\0')) { 512 return (10*i); 513 } 514 (void) fprintf(stderr, "ztest: invalid bytes suffix: %s\n", buf); 515 usage(B_FALSE); 516 /* NOTREACHED */ 517} 518 519static uint64_t 520nicenumtoull(const char *buf) 521{ 522 char *end; 523 uint64_t val; 524 525 val = strtoull(buf, &end, 0); 526 if (end == buf) { 527 (void) fprintf(stderr, "ztest: bad numeric value: %s\n", buf); 528 usage(B_FALSE); 529 } else if (end[0] == '.') { 530 double fval = strtod(buf, &end); 531 fval *= pow(2, str2shift(end)); 532 if (fval > UINT64_MAX) { 533 (void) fprintf(stderr, "ztest: value too large: %s\n", 534 buf); 535 usage(B_FALSE); 536 } 537 val = (uint64_t)fval; 538 } else { 539 int shift = str2shift(end); 540 if (shift >= 64 || (val << shift) >> shift != val) { 541 (void) fprintf(stderr, "ztest: value too large: %s\n", 542 buf); 543 usage(B_FALSE); 544 } 545 val <<= shift; 546 } 547 return (val); 548} 549 550static void 551usage(boolean_t requested) 552{ 553 const ztest_shared_opts_t *zo = &ztest_opts_defaults; 554 555 char nice_vdev_size[10]; 556 char nice_gang_bang[10]; 557 FILE *fp = requested ? stdout : stderr; 558 559 nicenum(zo->zo_vdev_size, nice_vdev_size); 560 nicenum(zo->zo_metaslab_gang_bang, nice_gang_bang); 561 562 (void) fprintf(fp, "Usage: %s\n" 563 "\t[-v vdevs (default: %llu)]\n" 564 "\t[-s size_of_each_vdev (default: %s)]\n" 565 "\t[-a alignment_shift (default: %d)] use 0 for random\n" 566 "\t[-m mirror_copies (default: %d)]\n" 567 "\t[-r raidz_disks (default: %d)]\n" 568 "\t[-R raidz_parity (default: %d)]\n" 569 "\t[-d datasets (default: %d)]\n" 570 "\t[-t threads (default: %d)]\n" 571 "\t[-g gang_block_threshold (default: %s)]\n" 572 "\t[-i init_count (default: %d)] initialize pool i times\n" 573 "\t[-k kill_percentage (default: %llu%%)]\n" 574 "\t[-p pool_name (default: %s)]\n" 575 "\t[-f dir (default: %s)] file directory for vdev files\n" 576 "\t[-V] verbose (use multiple times for ever more blather)\n" 577 "\t[-E] use existing pool instead of creating new one\n" 578 "\t[-T time (default: %llu sec)] total run time\n" 579 "\t[-F freezeloops (default: %llu)] max loops in spa_freeze()\n" 580 "\t[-P passtime (default: %llu sec)] time per pass\n" 581 "\t[-B alt_ztest (default: <none>)] alternate ztest path\n" 582 "\t[-h] (print help)\n" 583 "", 584 zo->zo_pool, 585 (u_longlong_t)zo->zo_vdevs, /* -v */ 586 nice_vdev_size, /* -s */ 587 zo->zo_ashift, /* -a */ 588 zo->zo_mirrors, /* -m */ 589 zo->zo_raidz, /* -r */ 590 zo->zo_raidz_parity, /* -R */ 591 zo->zo_datasets, /* -d */ 592 zo->zo_threads, /* -t */ 593 nice_gang_bang, /* -g */ 594 zo->zo_init, /* -i */ 595 (u_longlong_t)zo->zo_killrate, /* -k */ 596 zo->zo_pool, /* -p */ 597 zo->zo_dir, /* -f */ 598 (u_longlong_t)zo->zo_time, /* -T */ 599 (u_longlong_t)zo->zo_maxloops, /* -F */ 600 (u_longlong_t)zo->zo_passtime); 601 exit(requested ? 0 : 1); 602} 603 604static void 605process_options(int argc, char **argv) 606{ 607 char *path; 608 ztest_shared_opts_t *zo = &ztest_opts; 609 610 int opt; 611 uint64_t value; 612 char altdir[MAXNAMELEN] = { 0 }; 613 614 bcopy(&ztest_opts_defaults, zo, sizeof (*zo)); 615 616 while ((opt = getopt(argc, argv, 617 "v:s:a:m:r:R:d:t:g:i:k:p:f:VET:P:hF:B:")) != EOF) { 618 value = 0; 619 switch (opt) { 620 case 'v': 621 case 's': 622 case 'a': 623 case 'm': 624 case 'r': 625 case 'R': 626 case 'd': 627 case 't': 628 case 'g': 629 case 'i': 630 case 'k': 631 case 'T': 632 case 'P': 633 case 'F': 634 value = nicenumtoull(optarg); 635 } 636 switch (opt) { 637 case 'v': 638 zo->zo_vdevs = value; 639 break; 640 case 's': 641 zo->zo_vdev_size = MAX(SPA_MINDEVSIZE, value); 642 break; 643 case 'a': 644 zo->zo_ashift = value; 645 break; 646 case 'm': 647 zo->zo_mirrors = value; 648 break; 649 case 'r': 650 zo->zo_raidz = MAX(1, value); 651 break; 652 case 'R': 653 zo->zo_raidz_parity = MIN(MAX(value, 1), 3); 654 break; 655 case 'd': 656 zo->zo_datasets = MAX(1, value); 657 break; 658 case 't': 659 zo->zo_threads = MAX(1, value); 660 break; 661 case 'g': 662 zo->zo_metaslab_gang_bang = MAX(SPA_MINBLOCKSIZE << 1, 663 value); 664 break; 665 case 'i': 666 zo->zo_init = value; 667 break; 668 case 'k': 669 zo->zo_killrate = value; 670 break; 671 case 'p': 672 (void) strlcpy(zo->zo_pool, optarg, 673 sizeof (zo->zo_pool)); 674 break; 675 case 'f': 676 path = realpath(optarg, NULL); 677 if (path == NULL) { 678 (void) fprintf(stderr, "error: %s: %s\n", 679 optarg, strerror(errno)); 680 usage(B_FALSE); 681 } else { 682 (void) strlcpy(zo->zo_dir, path, 683 sizeof (zo->zo_dir)); 684 } 685 break; 686 case 'V': 687 zo->zo_verbose++; 688 break; 689 case 'E': 690 zo->zo_init = 0; 691 break; 692 case 'T': 693 zo->zo_time = value; 694 break; 695 case 'P': 696 zo->zo_passtime = MAX(1, value); 697 break; 698 case 'F': 699 zo->zo_maxloops = MAX(1, value); 700 break; 701 case 'B': 702 (void) strlcpy(altdir, optarg, sizeof (altdir)); 703 break; 704 case 'h': 705 usage(B_TRUE); 706 break; 707 case '?': 708 default: 709 usage(B_FALSE); 710 break; 711 } 712 } 713 714 zo->zo_raidz_parity = MIN(zo->zo_raidz_parity, zo->zo_raidz - 1); 715 716 zo->zo_vdevtime = 717 (zo->zo_vdevs > 0 ? zo->zo_time * NANOSEC / zo->zo_vdevs : 718 UINT64_MAX >> 2); 719 720 if (strlen(altdir) > 0) { 721 char *cmd; 722 char *realaltdir; 723 char *bin; 724 char *ztest; 725 char *isa; 726 int isalen; 727 728 cmd = umem_alloc(MAXPATHLEN, UMEM_NOFAIL); 729 realaltdir = umem_alloc(MAXPATHLEN, UMEM_NOFAIL); 730 731 VERIFY(NULL != realpath(getexecname(), cmd)); 732 if (0 != access(altdir, F_OK)) { 733 ztest_dump_core = B_FALSE; 734 fatal(B_TRUE, "invalid alternate ztest path: %s", 735 altdir); 736 } 737 VERIFY(NULL != realpath(altdir, realaltdir)); 738 739 /* 740 * 'cmd' should be of the form "<anything>/usr/bin/<isa>/ztest". 741 * We want to extract <isa> to determine if we should use 742 * 32 or 64 bit binaries. 743 */ 744 bin = strstr(cmd, "/usr/bin/"); 745 ztest = strstr(bin, "/ztest"); 746 isa = bin + 9; 747 isalen = ztest - isa; 748 (void) snprintf(zo->zo_alt_ztest, sizeof (zo->zo_alt_ztest), 749 "%s/usr/bin/%.*s/ztest", realaltdir, isalen, isa); 750 (void) snprintf(zo->zo_alt_libpath, sizeof (zo->zo_alt_libpath), 751 "%s/usr/lib/%.*s", realaltdir, isalen, isa); 752 753 if (0 != access(zo->zo_alt_ztest, X_OK)) { 754 ztest_dump_core = B_FALSE; 755 fatal(B_TRUE, "invalid alternate ztest: %s", 756 zo->zo_alt_ztest); 757 } else if (0 != access(zo->zo_alt_libpath, X_OK)) { 758 ztest_dump_core = B_FALSE; 759 fatal(B_TRUE, "invalid alternate lib directory %s", 760 zo->zo_alt_libpath); 761 } 762 763 umem_free(cmd, MAXPATHLEN); 764 umem_free(realaltdir, MAXPATHLEN); 765 } 766} 767 768static void 769ztest_kill(ztest_shared_t *zs) 770{ 771 zs->zs_alloc = metaslab_class_get_alloc(spa_normal_class(ztest_spa)); 772 zs->zs_space = metaslab_class_get_space(spa_normal_class(ztest_spa)); 773 774 /* 775 * Before we kill off ztest, make sure that the config is updated. 776 * See comment above spa_config_sync(). 777 */ 778 mutex_enter(&spa_namespace_lock); 779 spa_config_sync(ztest_spa, B_FALSE, B_FALSE); 780 mutex_exit(&spa_namespace_lock); 781 782 zfs_dbgmsg_print(FTAG); 783 (void) kill(getpid(), SIGKILL); 784} 785 786static uint64_t 787ztest_random(uint64_t range) 788{ 789 uint64_t r; 790 791 ASSERT3S(ztest_fd_rand, >=, 0); 792 793 if (range == 0) 794 return (0); 795 796 if (read(ztest_fd_rand, &r, sizeof (r)) != sizeof (r)) 797 fatal(1, "short read from /dev/urandom"); 798 799 return (r % range); 800} 801 802/* ARGSUSED */ 803static void 804ztest_record_enospc(const char *s) 805{ 806 ztest_shared->zs_enospc_count++; 807} 808 809static uint64_t 810ztest_get_ashift(void) 811{ 812 if (ztest_opts.zo_ashift == 0) 813 return (SPA_MINBLOCKSHIFT + ztest_random(5)); 814 return (ztest_opts.zo_ashift); 815} 816 817static nvlist_t * 818make_vdev_file(char *path, char *aux, char *pool, size_t size, uint64_t ashift) 819{ 820 char pathbuf[MAXPATHLEN]; 821 uint64_t vdev; 822 nvlist_t *file; 823 824 if (ashift == 0) 825 ashift = ztest_get_ashift(); 826 827 if (path == NULL) { 828 path = pathbuf; 829 830 if (aux != NULL) { 831 vdev = ztest_shared->zs_vdev_aux; 832 (void) snprintf(path, sizeof (pathbuf), 833 ztest_aux_template, ztest_opts.zo_dir, 834 pool == NULL ? ztest_opts.zo_pool : pool, 835 aux, vdev); 836 } else { 837 vdev = ztest_shared->zs_vdev_next_leaf++; 838 (void) snprintf(path, sizeof (pathbuf), 839 ztest_dev_template, ztest_opts.zo_dir, 840 pool == NULL ? ztest_opts.zo_pool : pool, vdev); 841 } 842 } 843 844 if (size != 0) { 845 int fd = open(path, O_RDWR | O_CREAT | O_TRUNC, 0666); 846 if (fd == -1) 847 fatal(1, "can't open %s", path); 848 if (ftruncate(fd, size) != 0) 849 fatal(1, "can't ftruncate %s", path); 850 (void) close(fd); 851 } 852 853 VERIFY(nvlist_alloc(&file, NV_UNIQUE_NAME, 0) == 0); 854 VERIFY(nvlist_add_string(file, ZPOOL_CONFIG_TYPE, VDEV_TYPE_FILE) == 0); 855 VERIFY(nvlist_add_string(file, ZPOOL_CONFIG_PATH, path) == 0); 856 VERIFY(nvlist_add_uint64(file, ZPOOL_CONFIG_ASHIFT, ashift) == 0); 857 858 return (file); 859} 860 861static nvlist_t * 862make_vdev_raidz(char *path, char *aux, char *pool, size_t size, 863 uint64_t ashift, int r) 864{ 865 nvlist_t *raidz, **child; 866 int c; 867 868 if (r < 2) 869 return (make_vdev_file(path, aux, pool, size, ashift)); 870 child = umem_alloc(r * sizeof (nvlist_t *), UMEM_NOFAIL); 871 872 for (c = 0; c < r; c++) 873 child[c] = make_vdev_file(path, aux, pool, size, ashift); 874 875 VERIFY(nvlist_alloc(&raidz, NV_UNIQUE_NAME, 0) == 0); 876 VERIFY(nvlist_add_string(raidz, ZPOOL_CONFIG_TYPE, 877 VDEV_TYPE_RAIDZ) == 0); 878 VERIFY(nvlist_add_uint64(raidz, ZPOOL_CONFIG_NPARITY, 879 ztest_opts.zo_raidz_parity) == 0); 880 VERIFY(nvlist_add_nvlist_array(raidz, ZPOOL_CONFIG_CHILDREN, 881 child, r) == 0); 882 883 for (c = 0; c < r; c++) 884 nvlist_free(child[c]); 885 886 umem_free(child, r * sizeof (nvlist_t *)); 887 888 return (raidz); 889} 890 891static nvlist_t * 892make_vdev_mirror(char *path, char *aux, char *pool, size_t size, 893 uint64_t ashift, int r, int m) 894{ 895 nvlist_t *mirror, **child; 896 int c; 897 898 if (m < 1) 899 return (make_vdev_raidz(path, aux, pool, size, ashift, r)); 900 901 child = umem_alloc(m * sizeof (nvlist_t *), UMEM_NOFAIL); 902 903 for (c = 0; c < m; c++) 904 child[c] = make_vdev_raidz(path, aux, pool, size, ashift, r); 905 906 VERIFY(nvlist_alloc(&mirror, NV_UNIQUE_NAME, 0) == 0); 907 VERIFY(nvlist_add_string(mirror, ZPOOL_CONFIG_TYPE, 908 VDEV_TYPE_MIRROR) == 0); 909 VERIFY(nvlist_add_nvlist_array(mirror, ZPOOL_CONFIG_CHILDREN, 910 child, m) == 0); 911 912 for (c = 0; c < m; c++) 913 nvlist_free(child[c]); 914 915 umem_free(child, m * sizeof (nvlist_t *)); 916 917 return (mirror); 918} 919 920static nvlist_t * 921make_vdev_root(char *path, char *aux, char *pool, size_t size, uint64_t ashift, 922 int log, int r, int m, int t) 923{ 924 nvlist_t *root, **child; 925 int c; 926 927 ASSERT(t > 0); 928 929 child = umem_alloc(t * sizeof (nvlist_t *), UMEM_NOFAIL); 930 931 for (c = 0; c < t; c++) { 932 child[c] = make_vdev_mirror(path, aux, pool, size, ashift, 933 r, m); 934 VERIFY(nvlist_add_uint64(child[c], ZPOOL_CONFIG_IS_LOG, 935 log) == 0); 936 } 937 938 VERIFY(nvlist_alloc(&root, NV_UNIQUE_NAME, 0) == 0); 939 VERIFY(nvlist_add_string(root, ZPOOL_CONFIG_TYPE, VDEV_TYPE_ROOT) == 0); 940 VERIFY(nvlist_add_nvlist_array(root, aux ? aux : ZPOOL_CONFIG_CHILDREN, 941 child, t) == 0); 942 943 for (c = 0; c < t; c++) 944 nvlist_free(child[c]); 945 946 umem_free(child, t * sizeof (nvlist_t *)); 947 948 return (root); 949} 950 951/* 952 * Find a random spa version. Returns back a random spa version in the 953 * range [initial_version, SPA_VERSION_FEATURES]. 954 */ 955static uint64_t 956ztest_random_spa_version(uint64_t initial_version) 957{ 958 uint64_t version = initial_version; 959 960 if (version <= SPA_VERSION_BEFORE_FEATURES) { 961 version = version + 962 ztest_random(SPA_VERSION_BEFORE_FEATURES - version + 1); 963 } 964 965 if (version > SPA_VERSION_BEFORE_FEATURES) 966 version = SPA_VERSION_FEATURES; 967 968 ASSERT(SPA_VERSION_IS_SUPPORTED(version)); 969 return (version); 970} 971 972/* 973 * Find the largest ashift used 974 */ 975static uint64_t 976ztest_spa_get_ashift() { 977 uint64_t i; 978 uint64_t ashift = SPA_MINBLOCKSHIFT; 979 vdev_t *rvd = ztest_spa->spa_root_vdev; 980 981 for (i = 0; i < rvd->vdev_children; i++) { 982 ashift = MAX(ashift, rvd->vdev_child[i]->vdev_ashift); 983 } 984 return (ashift); 985} 986 987static int 988ztest_random_blocksize(void) 989{ 990 uint64_t block_shift; 991 /* 992 * Choose a block size >= the ashift. 993 * If the SPA supports new MAXBLOCKSIZE, test up to 1MB blocks. 994 */ 995 int maxbs = SPA_OLD_MAXBLOCKSHIFT; 996 if (spa_maxblocksize(ztest_spa) == SPA_MAXBLOCKSIZE) 997 maxbs = 20; 998 block_shift = ztest_random(maxbs - ztest_spa_get_ashift() + 1); 999 return (1 << (SPA_MINBLOCKSHIFT + block_shift)); 1000} 1001 1002static int 1003ztest_random_ibshift(void) 1004{ 1005 return (DN_MIN_INDBLKSHIFT + 1006 ztest_random(DN_MAX_INDBLKSHIFT - DN_MIN_INDBLKSHIFT + 1)); 1007} 1008 1009static uint64_t 1010ztest_random_vdev_top(spa_t *spa, boolean_t log_ok) 1011{ 1012 uint64_t top; 1013 vdev_t *rvd = spa->spa_root_vdev; 1014 vdev_t *tvd; 1015 1016 ASSERT(spa_config_held(spa, SCL_ALL, RW_READER) != 0); 1017 1018 do { 1019 top = ztest_random(rvd->vdev_children); 1020 tvd = rvd->vdev_child[top]; 1021 } while (tvd->vdev_ishole || (tvd->vdev_islog && !log_ok) || 1022 tvd->vdev_mg == NULL || tvd->vdev_mg->mg_class == NULL); 1023 1024 return (top); 1025} 1026 1027static uint64_t 1028ztest_random_dsl_prop(zfs_prop_t prop) 1029{ 1030 uint64_t value; 1031 1032 do { 1033 value = zfs_prop_random_value(prop, ztest_random(-1ULL)); 1034 } while (prop == ZFS_PROP_CHECKSUM && value == ZIO_CHECKSUM_OFF); 1035 1036 return (value); 1037} 1038 1039static int 1040ztest_dsl_prop_set_uint64(char *osname, zfs_prop_t prop, uint64_t value, 1041 boolean_t inherit) 1042{ 1043 const char *propname = zfs_prop_to_name(prop); 1044 const char *valname; 1045 char setpoint[MAXPATHLEN]; 1046 uint64_t curval; 1047 int error; 1048 1049 error = dsl_prop_set_int(osname, propname, 1050 (inherit ? ZPROP_SRC_NONE : ZPROP_SRC_LOCAL), value); 1051 1052 if (error == ENOSPC) { 1053 ztest_record_enospc(FTAG); 1054 return (error); 1055 } 1056 ASSERT0(error); 1057 1058 VERIFY0(dsl_prop_get_integer(osname, propname, &curval, setpoint)); 1059 1060 if (ztest_opts.zo_verbose >= 6) { 1061 VERIFY(zfs_prop_index_to_string(prop, curval, &valname) == 0); 1062 (void) printf("%s %s = %s at '%s'\n", 1063 osname, propname, valname, setpoint); 1064 } 1065 1066 return (error); 1067} 1068 1069static int 1070ztest_spa_prop_set_uint64(zpool_prop_t prop, uint64_t value) 1071{ 1072 spa_t *spa = ztest_spa; 1073 nvlist_t *props = NULL; 1074 int error; 1075 1076 VERIFY(nvlist_alloc(&props, NV_UNIQUE_NAME, 0) == 0); 1077 VERIFY(nvlist_add_uint64(props, zpool_prop_to_name(prop), value) == 0); 1078 1079 error = spa_prop_set(spa, props); 1080 1081 nvlist_free(props); 1082 1083 if (error == ENOSPC) { 1084 ztest_record_enospc(FTAG); 1085 return (error); 1086 } 1087 ASSERT0(error); 1088 1089 return (error); 1090} 1091 1092static void 1093ztest_rll_init(rll_t *rll) 1094{ 1095 rll->rll_writer = NULL; 1096 rll->rll_readers = 0; 1097 VERIFY(_mutex_init(&rll->rll_lock, USYNC_THREAD, NULL) == 0); 1098 VERIFY(cond_init(&rll->rll_cv, USYNC_THREAD, NULL) == 0); 1099} 1100 1101static void 1102ztest_rll_destroy(rll_t *rll) 1103{ 1104 ASSERT(rll->rll_writer == NULL); 1105 ASSERT(rll->rll_readers == 0); 1106 VERIFY(_mutex_destroy(&rll->rll_lock) == 0); 1107 VERIFY(cond_destroy(&rll->rll_cv) == 0); 1108} 1109 1110static void 1111ztest_rll_lock(rll_t *rll, rl_type_t type) 1112{ 1113 VERIFY(mutex_lock(&rll->rll_lock) == 0); 1114 1115 if (type == RL_READER) { 1116 while (rll->rll_writer != NULL) 1117 (void) cond_wait(&rll->rll_cv, &rll->rll_lock); 1118 rll->rll_readers++; 1119 } else { 1120 while (rll->rll_writer != NULL || rll->rll_readers) 1121 (void) cond_wait(&rll->rll_cv, &rll->rll_lock); 1122 rll->rll_writer = curthread; 1123 } 1124 1125 VERIFY(mutex_unlock(&rll->rll_lock) == 0); 1126} 1127 1128static void 1129ztest_rll_unlock(rll_t *rll) 1130{ 1131 VERIFY(mutex_lock(&rll->rll_lock) == 0); 1132 1133 if (rll->rll_writer) { 1134 ASSERT(rll->rll_readers == 0); 1135 rll->rll_writer = NULL; 1136 } else { 1137 ASSERT(rll->rll_readers != 0); 1138 ASSERT(rll->rll_writer == NULL); 1139 rll->rll_readers--; 1140 } 1141 1142 if (rll->rll_writer == NULL && rll->rll_readers == 0) 1143 VERIFY(cond_broadcast(&rll->rll_cv) == 0); 1144 1145 VERIFY(mutex_unlock(&rll->rll_lock) == 0); 1146} 1147 1148static void 1149ztest_object_lock(ztest_ds_t *zd, uint64_t object, rl_type_t type) 1150{ 1151 rll_t *rll = &zd->zd_object_lock[object & (ZTEST_OBJECT_LOCKS - 1)]; 1152 1153 ztest_rll_lock(rll, type); 1154} 1155 1156static void 1157ztest_object_unlock(ztest_ds_t *zd, uint64_t object) 1158{ 1159 rll_t *rll = &zd->zd_object_lock[object & (ZTEST_OBJECT_LOCKS - 1)]; 1160 1161 ztest_rll_unlock(rll); 1162} 1163 1164static rl_t * 1165ztest_range_lock(ztest_ds_t *zd, uint64_t object, uint64_t offset, 1166 uint64_t size, rl_type_t type) 1167{ 1168 uint64_t hash = object ^ (offset % (ZTEST_RANGE_LOCKS + 1)); 1169 rll_t *rll = &zd->zd_range_lock[hash & (ZTEST_RANGE_LOCKS - 1)]; 1170 rl_t *rl; 1171 1172 rl = umem_alloc(sizeof (*rl), UMEM_NOFAIL); 1173 rl->rl_object = object; 1174 rl->rl_offset = offset; 1175 rl->rl_size = size; 1176 rl->rl_lock = rll; 1177 1178 ztest_rll_lock(rll, type); 1179 1180 return (rl); 1181} 1182 1183static void 1184ztest_range_unlock(rl_t *rl) 1185{ 1186 rll_t *rll = rl->rl_lock; 1187 1188 ztest_rll_unlock(rll); 1189 1190 umem_free(rl, sizeof (*rl)); 1191} 1192 1193static void 1194ztest_zd_init(ztest_ds_t *zd, ztest_shared_ds_t *szd, objset_t *os) 1195{ 1196 zd->zd_os = os; 1197 zd->zd_zilog = dmu_objset_zil(os); 1198 zd->zd_shared = szd; 1199 dmu_objset_name(os, zd->zd_name); 1200 1201 if (zd->zd_shared != NULL) 1202 zd->zd_shared->zd_seq = 0; 1203 1204 VERIFY(rwlock_init(&zd->zd_zilog_lock, USYNC_THREAD, NULL) == 0); 1205 VERIFY(_mutex_init(&zd->zd_dirobj_lock, USYNC_THREAD, NULL) == 0); 1206 1207 for (int l = 0; l < ZTEST_OBJECT_LOCKS; l++) 1208 ztest_rll_init(&zd->zd_object_lock[l]); 1209 1210 for (int l = 0; l < ZTEST_RANGE_LOCKS; l++) 1211 ztest_rll_init(&zd->zd_range_lock[l]); 1212} 1213 1214static void 1215ztest_zd_fini(ztest_ds_t *zd) 1216{ 1217 VERIFY(_mutex_destroy(&zd->zd_dirobj_lock) == 0); 1218 1219 for (int l = 0; l < ZTEST_OBJECT_LOCKS; l++) 1220 ztest_rll_destroy(&zd->zd_object_lock[l]); 1221 1222 for (int l = 0; l < ZTEST_RANGE_LOCKS; l++) 1223 ztest_rll_destroy(&zd->zd_range_lock[l]); 1224} 1225 1226#define TXG_MIGHTWAIT (ztest_random(10) == 0 ? TXG_NOWAIT : TXG_WAIT) 1227 1228static uint64_t 1229ztest_tx_assign(dmu_tx_t *tx, uint64_t txg_how, const char *tag) 1230{ 1231 uint64_t txg; 1232 int error; 1233 1234 /* 1235 * Attempt to assign tx to some transaction group. 1236 */ 1237 error = dmu_tx_assign(tx, txg_how); 1238 if (error) { 1239 if (error == ERESTART) { 1240 ASSERT(txg_how == TXG_NOWAIT); 1241 dmu_tx_wait(tx); 1242 } else { 1243 ASSERT3U(error, ==, ENOSPC); 1244 ztest_record_enospc(tag); 1245 } 1246 dmu_tx_abort(tx); 1247 return (0); 1248 } 1249 txg = dmu_tx_get_txg(tx); 1250 ASSERT(txg != 0); 1251 return (txg); 1252} 1253 1254static void 1255ztest_pattern_set(void *buf, uint64_t size, uint64_t value) 1256{ 1257 uint64_t *ip = buf; 1258 uint64_t *ip_end = (uint64_t *)((uintptr_t)buf + (uintptr_t)size); 1259 1260 while (ip < ip_end) 1261 *ip++ = value; 1262} 1263 1264static boolean_t 1265ztest_pattern_match(void *buf, uint64_t size, uint64_t value) 1266{ 1267 uint64_t *ip = buf; 1268 uint64_t *ip_end = (uint64_t *)((uintptr_t)buf + (uintptr_t)size); 1269 uint64_t diff = 0; 1270 1271 while (ip < ip_end) 1272 diff |= (value - *ip++); 1273 1274 return (diff == 0); 1275} 1276 1277static void 1278ztest_bt_generate(ztest_block_tag_t *bt, objset_t *os, uint64_t object, 1279 uint64_t offset, uint64_t gen, uint64_t txg, uint64_t crtxg) 1280{ 1281 bt->bt_magic = BT_MAGIC; 1282 bt->bt_objset = dmu_objset_id(os); 1283 bt->bt_object = object; 1284 bt->bt_offset = offset; 1285 bt->bt_gen = gen; 1286 bt->bt_txg = txg; 1287 bt->bt_crtxg = crtxg; 1288} 1289 1290static void 1291ztest_bt_verify(ztest_block_tag_t *bt, objset_t *os, uint64_t object, 1292 uint64_t offset, uint64_t gen, uint64_t txg, uint64_t crtxg) 1293{ 1294 ASSERT3U(bt->bt_magic, ==, BT_MAGIC); 1295 ASSERT3U(bt->bt_objset, ==, dmu_objset_id(os)); 1296 ASSERT3U(bt->bt_object, ==, object); 1297 ASSERT3U(bt->bt_offset, ==, offset); 1298 ASSERT3U(bt->bt_gen, <=, gen); 1299 ASSERT3U(bt->bt_txg, <=, txg); 1300 ASSERT3U(bt->bt_crtxg, ==, crtxg); 1301} 1302 1303static ztest_block_tag_t * 1304ztest_bt_bonus(dmu_buf_t *db) 1305{ 1306 dmu_object_info_t doi; 1307 ztest_block_tag_t *bt; 1308 1309 dmu_object_info_from_db(db, &doi); 1310 ASSERT3U(doi.doi_bonus_size, <=, db->db_size); 1311 ASSERT3U(doi.doi_bonus_size, >=, sizeof (*bt)); 1312 bt = (void *)((char *)db->db_data + doi.doi_bonus_size - sizeof (*bt)); 1313 1314 return (bt); 1315} 1316 1317/* 1318 * ZIL logging ops 1319 */ 1320 1321#define lrz_type lr_mode 1322#define lrz_blocksize lr_uid 1323#define lrz_ibshift lr_gid 1324#define lrz_bonustype lr_rdev 1325#define lrz_bonuslen lr_crtime[1] 1326 1327static void 1328ztest_log_create(ztest_ds_t *zd, dmu_tx_t *tx, lr_create_t *lr) 1329{ 1330 char *name = (void *)(lr + 1); /* name follows lr */ 1331 size_t namesize = strlen(name) + 1; 1332 itx_t *itx; 1333 1334 if (zil_replaying(zd->zd_zilog, tx)) 1335 return; 1336 1337 itx = zil_itx_create(TX_CREATE, sizeof (*lr) + namesize); 1338 bcopy(&lr->lr_common + 1, &itx->itx_lr + 1, 1339 sizeof (*lr) + namesize - sizeof (lr_t)); 1340 1341 zil_itx_assign(zd->zd_zilog, itx, tx); 1342} 1343 1344static void 1345ztest_log_remove(ztest_ds_t *zd, dmu_tx_t *tx, lr_remove_t *lr, uint64_t object) 1346{ 1347 char *name = (void *)(lr + 1); /* name follows lr */ 1348 size_t namesize = strlen(name) + 1; 1349 itx_t *itx; 1350 1351 if (zil_replaying(zd->zd_zilog, tx)) 1352 return; 1353 1354 itx = zil_itx_create(TX_REMOVE, sizeof (*lr) + namesize); 1355 bcopy(&lr->lr_common + 1, &itx->itx_lr + 1, 1356 sizeof (*lr) + namesize - sizeof (lr_t)); 1357 1358 itx->itx_oid = object; 1359 zil_itx_assign(zd->zd_zilog, itx, tx); 1360} 1361 1362static void 1363ztest_log_write(ztest_ds_t *zd, dmu_tx_t *tx, lr_write_t *lr) 1364{ 1365 itx_t *itx; 1366 itx_wr_state_t write_state = ztest_random(WR_NUM_STATES); 1367 1368 if (zil_replaying(zd->zd_zilog, tx)) 1369 return; 1370 1371 if (lr->lr_length > ZIL_MAX_LOG_DATA) 1372 write_state = WR_INDIRECT; 1373 1374 itx = zil_itx_create(TX_WRITE, 1375 sizeof (*lr) + (write_state == WR_COPIED ? lr->lr_length : 0)); 1376 1377 if (write_state == WR_COPIED && 1378 dmu_read(zd->zd_os, lr->lr_foid, lr->lr_offset, lr->lr_length, 1379 ((lr_write_t *)&itx->itx_lr) + 1, DMU_READ_NO_PREFETCH) != 0) { 1380 zil_itx_destroy(itx); 1381 itx = zil_itx_create(TX_WRITE, sizeof (*lr)); 1382 write_state = WR_NEED_COPY; 1383 } 1384 itx->itx_private = zd; 1385 itx->itx_wr_state = write_state; 1386 itx->itx_sync = (ztest_random(8) == 0); 1387 itx->itx_sod += (write_state == WR_NEED_COPY ? lr->lr_length : 0); 1388 1389 bcopy(&lr->lr_common + 1, &itx->itx_lr + 1, 1390 sizeof (*lr) - sizeof (lr_t)); 1391 1392 zil_itx_assign(zd->zd_zilog, itx, tx); 1393} 1394 1395static void 1396ztest_log_truncate(ztest_ds_t *zd, dmu_tx_t *tx, lr_truncate_t *lr) 1397{ 1398 itx_t *itx; 1399 1400 if (zil_replaying(zd->zd_zilog, tx)) 1401 return; 1402 1403 itx = zil_itx_create(TX_TRUNCATE, sizeof (*lr)); 1404 bcopy(&lr->lr_common + 1, &itx->itx_lr + 1, 1405 sizeof (*lr) - sizeof (lr_t)); 1406 1407 itx->itx_sync = B_FALSE; 1408 zil_itx_assign(zd->zd_zilog, itx, tx); 1409} 1410 1411static void 1412ztest_log_setattr(ztest_ds_t *zd, dmu_tx_t *tx, lr_setattr_t *lr) 1413{ 1414 itx_t *itx; 1415 1416 if (zil_replaying(zd->zd_zilog, tx)) 1417 return; 1418 1419 itx = zil_itx_create(TX_SETATTR, sizeof (*lr)); 1420 bcopy(&lr->lr_common + 1, &itx->itx_lr + 1, 1421 sizeof (*lr) - sizeof (lr_t)); 1422 1423 itx->itx_sync = B_FALSE; 1424 zil_itx_assign(zd->zd_zilog, itx, tx); 1425} 1426 1427/* 1428 * ZIL replay ops 1429 */ 1430static int 1431ztest_replay_create(ztest_ds_t *zd, lr_create_t *lr, boolean_t byteswap) 1432{ 1433 char *name = (void *)(lr + 1); /* name follows lr */ 1434 objset_t *os = zd->zd_os; 1435 ztest_block_tag_t *bbt; 1436 dmu_buf_t *db; 1437 dmu_tx_t *tx; 1438 uint64_t txg; 1439 int error = 0; 1440 1441 if (byteswap) 1442 byteswap_uint64_array(lr, sizeof (*lr)); 1443 1444 ASSERT(lr->lr_doid == ZTEST_DIROBJ); 1445 ASSERT(name[0] != '\0'); 1446 1447 tx = dmu_tx_create(os); 1448 1449 dmu_tx_hold_zap(tx, lr->lr_doid, B_TRUE, name); 1450 1451 if (lr->lrz_type == DMU_OT_ZAP_OTHER) { 1452 dmu_tx_hold_zap(tx, DMU_NEW_OBJECT, B_TRUE, NULL); 1453 } else { 1454 dmu_tx_hold_bonus(tx, DMU_NEW_OBJECT); 1455 } 1456 1457 txg = ztest_tx_assign(tx, TXG_WAIT, FTAG); 1458 if (txg == 0) 1459 return (ENOSPC); 1460 1461 ASSERT(dmu_objset_zil(os)->zl_replay == !!lr->lr_foid); 1462 1463 if (lr->lrz_type == DMU_OT_ZAP_OTHER) { 1464 if (lr->lr_foid == 0) { 1465 lr->lr_foid = zap_create(os, 1466 lr->lrz_type, lr->lrz_bonustype, 1467 lr->lrz_bonuslen, tx); 1468 } else { 1469 error = zap_create_claim(os, lr->lr_foid, 1470 lr->lrz_type, lr->lrz_bonustype, 1471 lr->lrz_bonuslen, tx); 1472 } 1473 } else { 1474 if (lr->lr_foid == 0) { 1475 lr->lr_foid = dmu_object_alloc(os, 1476 lr->lrz_type, 0, lr->lrz_bonustype, 1477 lr->lrz_bonuslen, tx); 1478 } else { 1479 error = dmu_object_claim(os, lr->lr_foid, 1480 lr->lrz_type, 0, lr->lrz_bonustype, 1481 lr->lrz_bonuslen, tx); 1482 } 1483 } 1484 1485 if (error) { 1486 ASSERT3U(error, ==, EEXIST); 1487 ASSERT(zd->zd_zilog->zl_replay); 1488 dmu_tx_commit(tx); 1489 return (error); 1490 } 1491 1492 ASSERT(lr->lr_foid != 0); 1493 1494 if (lr->lrz_type != DMU_OT_ZAP_OTHER) 1495 VERIFY3U(0, ==, dmu_object_set_blocksize(os, lr->lr_foid, 1496 lr->lrz_blocksize, lr->lrz_ibshift, tx)); 1497 1498 VERIFY3U(0, ==, dmu_bonus_hold(os, lr->lr_foid, FTAG, &db)); 1499 bbt = ztest_bt_bonus(db); 1500 dmu_buf_will_dirty(db, tx); 1501 ztest_bt_generate(bbt, os, lr->lr_foid, -1ULL, lr->lr_gen, txg, txg); 1502 dmu_buf_rele(db, FTAG); 1503 1504 VERIFY3U(0, ==, zap_add(os, lr->lr_doid, name, sizeof (uint64_t), 1, 1505 &lr->lr_foid, tx)); 1506 1507 (void) ztest_log_create(zd, tx, lr); 1508 1509 dmu_tx_commit(tx); 1510 1511 return (0); 1512} 1513 1514static int 1515ztest_replay_remove(ztest_ds_t *zd, lr_remove_t *lr, boolean_t byteswap) 1516{ 1517 char *name = (void *)(lr + 1); /* name follows lr */ 1518 objset_t *os = zd->zd_os; 1519 dmu_object_info_t doi; 1520 dmu_tx_t *tx; 1521 uint64_t object, txg; 1522 1523 if (byteswap) 1524 byteswap_uint64_array(lr, sizeof (*lr)); 1525 1526 ASSERT(lr->lr_doid == ZTEST_DIROBJ); 1527 ASSERT(name[0] != '\0'); 1528 1529 VERIFY3U(0, ==, 1530 zap_lookup(os, lr->lr_doid, name, sizeof (object), 1, &object)); 1531 ASSERT(object != 0); 1532 1533 ztest_object_lock(zd, object, RL_WRITER); 1534 1535 VERIFY3U(0, ==, dmu_object_info(os, object, &doi)); 1536 1537 tx = dmu_tx_create(os); 1538 1539 dmu_tx_hold_zap(tx, lr->lr_doid, B_FALSE, name); 1540 dmu_tx_hold_free(tx, object, 0, DMU_OBJECT_END); 1541 1542 txg = ztest_tx_assign(tx, TXG_WAIT, FTAG); 1543 if (txg == 0) { 1544 ztest_object_unlock(zd, object); 1545 return (ENOSPC); 1546 } 1547 1548 if (doi.doi_type == DMU_OT_ZAP_OTHER) { 1549 VERIFY3U(0, ==, zap_destroy(os, object, tx)); 1550 } else { 1551 VERIFY3U(0, ==, dmu_object_free(os, object, tx)); 1552 } 1553 1554 VERIFY3U(0, ==, zap_remove(os, lr->lr_doid, name, tx)); 1555 1556 (void) ztest_log_remove(zd, tx, lr, object); 1557 1558 dmu_tx_commit(tx); 1559 1560 ztest_object_unlock(zd, object); 1561 1562 return (0); 1563} 1564 1565static int 1566ztest_replay_write(ztest_ds_t *zd, lr_write_t *lr, boolean_t byteswap) 1567{ 1568 objset_t *os = zd->zd_os; 1569 void *data = lr + 1; /* data follows lr */ 1570 uint64_t offset, length; 1571 ztest_block_tag_t *bt = data; 1572 ztest_block_tag_t *bbt; 1573 uint64_t gen, txg, lrtxg, crtxg; 1574 dmu_object_info_t doi; 1575 dmu_tx_t *tx; 1576 dmu_buf_t *db; 1577 arc_buf_t *abuf = NULL; 1578 rl_t *rl; 1579 1580 if (byteswap) 1581 byteswap_uint64_array(lr, sizeof (*lr)); 1582 1583 offset = lr->lr_offset; 1584 length = lr->lr_length; 1585 1586 /* If it's a dmu_sync() block, write the whole block */ 1587 if (lr->lr_common.lrc_reclen == sizeof (lr_write_t)) { 1588 uint64_t blocksize = BP_GET_LSIZE(&lr->lr_blkptr); 1589 if (length < blocksize) { 1590 offset -= offset % blocksize; 1591 length = blocksize; 1592 } 1593 } 1594 1595 if (bt->bt_magic == BSWAP_64(BT_MAGIC)) 1596 byteswap_uint64_array(bt, sizeof (*bt)); 1597 1598 if (bt->bt_magic != BT_MAGIC) 1599 bt = NULL; 1600 1601 ztest_object_lock(zd, lr->lr_foid, RL_READER); 1602 rl = ztest_range_lock(zd, lr->lr_foid, offset, length, RL_WRITER); 1603 1604 VERIFY3U(0, ==, dmu_bonus_hold(os, lr->lr_foid, FTAG, &db)); 1605 1606 dmu_object_info_from_db(db, &doi); 1607 1608 bbt = ztest_bt_bonus(db); 1609 ASSERT3U(bbt->bt_magic, ==, BT_MAGIC); 1610 gen = bbt->bt_gen; 1611 crtxg = bbt->bt_crtxg; 1612 lrtxg = lr->lr_common.lrc_txg; 1613 1614 tx = dmu_tx_create(os); 1615 1616 dmu_tx_hold_write(tx, lr->lr_foid, offset, length); 1617 1618 if (ztest_random(8) == 0 && length == doi.doi_data_block_size && 1619 P2PHASE(offset, length) == 0) 1620 abuf = dmu_request_arcbuf(db, length); 1621 1622 txg = ztest_tx_assign(tx, TXG_WAIT, FTAG); 1623 if (txg == 0) { 1624 if (abuf != NULL) 1625 dmu_return_arcbuf(abuf); 1626 dmu_buf_rele(db, FTAG); 1627 ztest_range_unlock(rl); 1628 ztest_object_unlock(zd, lr->lr_foid); 1629 return (ENOSPC); 1630 } 1631 1632 if (bt != NULL) { 1633 /* 1634 * Usually, verify the old data before writing new data -- 1635 * but not always, because we also want to verify correct 1636 * behavior when the data was not recently read into cache. 1637 */ 1638 ASSERT(offset % doi.doi_data_block_size == 0); 1639 if (ztest_random(4) != 0) { 1640 int prefetch = ztest_random(2) ? 1641 DMU_READ_PREFETCH : DMU_READ_NO_PREFETCH; 1642 ztest_block_tag_t rbt; 1643 1644 VERIFY(dmu_read(os, lr->lr_foid, offset, 1645 sizeof (rbt), &rbt, prefetch) == 0); 1646 if (rbt.bt_magic == BT_MAGIC) { 1647 ztest_bt_verify(&rbt, os, lr->lr_foid, 1648 offset, gen, txg, crtxg); 1649 } 1650 } 1651 1652 /* 1653 * Writes can appear to be newer than the bonus buffer because 1654 * the ztest_get_data() callback does a dmu_read() of the 1655 * open-context data, which may be different than the data 1656 * as it was when the write was generated. 1657 */ 1658 if (zd->zd_zilog->zl_replay) { 1659 ztest_bt_verify(bt, os, lr->lr_foid, offset, 1660 MAX(gen, bt->bt_gen), MAX(txg, lrtxg), 1661 bt->bt_crtxg); 1662 } 1663 1664 /* 1665 * Set the bt's gen/txg to the bonus buffer's gen/txg 1666 * so that all of the usual ASSERTs will work. 1667 */ 1668 ztest_bt_generate(bt, os, lr->lr_foid, offset, gen, txg, crtxg); 1669 } 1670 1671 if (abuf == NULL) { 1672 dmu_write(os, lr->lr_foid, offset, length, data, tx); 1673 } else { 1674 bcopy(data, abuf->b_data, length); 1675 dmu_assign_arcbuf(db, offset, abuf, tx); 1676 } 1677 1678 (void) ztest_log_write(zd, tx, lr); 1679 1680 dmu_buf_rele(db, FTAG); 1681 1682 dmu_tx_commit(tx); 1683 1684 ztest_range_unlock(rl); 1685 ztest_object_unlock(zd, lr->lr_foid); 1686 1687 return (0); 1688} 1689 1690static int 1691ztest_replay_truncate(ztest_ds_t *zd, lr_truncate_t *lr, boolean_t byteswap) 1692{ 1693 objset_t *os = zd->zd_os; 1694 dmu_tx_t *tx; 1695 uint64_t txg; 1696 rl_t *rl; 1697 1698 if (byteswap) 1699 byteswap_uint64_array(lr, sizeof (*lr)); 1700 1701 ztest_object_lock(zd, lr->lr_foid, RL_READER); 1702 rl = ztest_range_lock(zd, lr->lr_foid, lr->lr_offset, lr->lr_length, 1703 RL_WRITER); 1704 1705 tx = dmu_tx_create(os); 1706 1707 dmu_tx_hold_free(tx, lr->lr_foid, lr->lr_offset, lr->lr_length); 1708 1709 txg = ztest_tx_assign(tx, TXG_WAIT, FTAG); 1710 if (txg == 0) { 1711 ztest_range_unlock(rl); 1712 ztest_object_unlock(zd, lr->lr_foid); 1713 return (ENOSPC); 1714 } 1715 1716 VERIFY(dmu_free_range(os, lr->lr_foid, lr->lr_offset, 1717 lr->lr_length, tx) == 0); 1718 1719 (void) ztest_log_truncate(zd, tx, lr); 1720 1721 dmu_tx_commit(tx); 1722 1723 ztest_range_unlock(rl); 1724 ztest_object_unlock(zd, lr->lr_foid); 1725 1726 return (0); 1727} 1728 1729static int 1730ztest_replay_setattr(ztest_ds_t *zd, lr_setattr_t *lr, boolean_t byteswap) 1731{ 1732 objset_t *os = zd->zd_os; 1733 dmu_tx_t *tx; 1734 dmu_buf_t *db; 1735 ztest_block_tag_t *bbt; 1736 uint64_t txg, lrtxg, crtxg; 1737 1738 if (byteswap) 1739 byteswap_uint64_array(lr, sizeof (*lr)); 1740 1741 ztest_object_lock(zd, lr->lr_foid, RL_WRITER); 1742 1743 VERIFY3U(0, ==, dmu_bonus_hold(os, lr->lr_foid, FTAG, &db)); 1744 1745 tx = dmu_tx_create(os); 1746 dmu_tx_hold_bonus(tx, lr->lr_foid); 1747 1748 txg = ztest_tx_assign(tx, TXG_WAIT, FTAG); 1749 if (txg == 0) { 1750 dmu_buf_rele(db, FTAG); 1751 ztest_object_unlock(zd, lr->lr_foid); 1752 return (ENOSPC); 1753 } 1754 1755 bbt = ztest_bt_bonus(db); 1756 ASSERT3U(bbt->bt_magic, ==, BT_MAGIC); 1757 crtxg = bbt->bt_crtxg; 1758 lrtxg = lr->lr_common.lrc_txg; 1759 1760 if (zd->zd_zilog->zl_replay) { 1761 ASSERT(lr->lr_size != 0); 1762 ASSERT(lr->lr_mode != 0); 1763 ASSERT(lrtxg != 0); 1764 } else { 1765 /* 1766 * Randomly change the size and increment the generation. 1767 */ 1768 lr->lr_size = (ztest_random(db->db_size / sizeof (*bbt)) + 1) * 1769 sizeof (*bbt); 1770 lr->lr_mode = bbt->bt_gen + 1; 1771 ASSERT(lrtxg == 0); 1772 } 1773 1774 /* 1775 * Verify that the current bonus buffer is not newer than our txg. 1776 */ 1777 ztest_bt_verify(bbt, os, lr->lr_foid, -1ULL, lr->lr_mode, 1778 MAX(txg, lrtxg), crtxg); 1779 1780 dmu_buf_will_dirty(db, tx); 1781 1782 ASSERT3U(lr->lr_size, >=, sizeof (*bbt)); 1783 ASSERT3U(lr->lr_size, <=, db->db_size); 1784 VERIFY0(dmu_set_bonus(db, lr->lr_size, tx)); 1785 bbt = ztest_bt_bonus(db); 1786 1787 ztest_bt_generate(bbt, os, lr->lr_foid, -1ULL, lr->lr_mode, txg, crtxg); 1788 1789 dmu_buf_rele(db, FTAG); 1790 1791 (void) ztest_log_setattr(zd, tx, lr); 1792 1793 dmu_tx_commit(tx); 1794 1795 ztest_object_unlock(zd, lr->lr_foid); 1796 1797 return (0); 1798} 1799 1800zil_replay_func_t *ztest_replay_vector[TX_MAX_TYPE] = { 1801 NULL, /* 0 no such transaction type */ 1802 ztest_replay_create, /* TX_CREATE */ 1803 NULL, /* TX_MKDIR */ 1804 NULL, /* TX_MKXATTR */ 1805 NULL, /* TX_SYMLINK */ 1806 ztest_replay_remove, /* TX_REMOVE */ 1807 NULL, /* TX_RMDIR */ 1808 NULL, /* TX_LINK */ 1809 NULL, /* TX_RENAME */ 1810 ztest_replay_write, /* TX_WRITE */ 1811 ztest_replay_truncate, /* TX_TRUNCATE */ 1812 ztest_replay_setattr, /* TX_SETATTR */ 1813 NULL, /* TX_ACL */ 1814 NULL, /* TX_CREATE_ACL */ 1815 NULL, /* TX_CREATE_ATTR */ 1816 NULL, /* TX_CREATE_ACL_ATTR */ 1817 NULL, /* TX_MKDIR_ACL */ 1818 NULL, /* TX_MKDIR_ATTR */ 1819 NULL, /* TX_MKDIR_ACL_ATTR */ 1820 NULL, /* TX_WRITE2 */ 1821}; 1822 1823/* 1824 * ZIL get_data callbacks 1825 */ 1826 1827static void 1828ztest_get_done(zgd_t *zgd, int error) 1829{ 1830 ztest_ds_t *zd = zgd->zgd_private; 1831 uint64_t object = zgd->zgd_rl->rl_object; 1832 1833 if (zgd->zgd_db) 1834 dmu_buf_rele(zgd->zgd_db, zgd); 1835 1836 ztest_range_unlock(zgd->zgd_rl); 1837 ztest_object_unlock(zd, object); 1838 1839 if (error == 0 && zgd->zgd_bp) 1840 zil_add_block(zgd->zgd_zilog, zgd->zgd_bp); 1841 1842 umem_free(zgd, sizeof (*zgd)); 1843} 1844 1845static int 1846ztest_get_data(void *arg, lr_write_t *lr, char *buf, zio_t *zio) 1847{ 1848 ztest_ds_t *zd = arg; 1849 objset_t *os = zd->zd_os; 1850 uint64_t object = lr->lr_foid; 1851 uint64_t offset = lr->lr_offset; 1852 uint64_t size = lr->lr_length; 1853 blkptr_t *bp = &lr->lr_blkptr; 1854 uint64_t txg = lr->lr_common.lrc_txg; 1855 uint64_t crtxg; 1856 dmu_object_info_t doi; 1857 dmu_buf_t *db; 1858 zgd_t *zgd; 1859 int error; 1860 1861 ztest_object_lock(zd, object, RL_READER); 1862 error = dmu_bonus_hold(os, object, FTAG, &db); 1863 if (error) { 1864 ztest_object_unlock(zd, object); 1865 return (error); 1866 } 1867 1868 crtxg = ztest_bt_bonus(db)->bt_crtxg; 1869 1870 if (crtxg == 0 || crtxg > txg) { 1871 dmu_buf_rele(db, FTAG); 1872 ztest_object_unlock(zd, object); 1873 return (ENOENT); 1874 } 1875 1876 dmu_object_info_from_db(db, &doi); 1877 dmu_buf_rele(db, FTAG); 1878 db = NULL; 1879 1880 zgd = umem_zalloc(sizeof (*zgd), UMEM_NOFAIL); 1881 zgd->zgd_zilog = zd->zd_zilog; 1882 zgd->zgd_private = zd; 1883 1884 if (buf != NULL) { /* immediate write */ 1885 zgd->zgd_rl = ztest_range_lock(zd, object, offset, size, 1886 RL_READER); 1887 1888 error = dmu_read(os, object, offset, size, buf, 1889 DMU_READ_NO_PREFETCH); 1890 ASSERT(error == 0); 1891 } else { 1892 size = doi.doi_data_block_size; 1893 if (ISP2(size)) { 1894 offset = P2ALIGN(offset, size); 1895 } else { 1896 ASSERT(offset < size); 1897 offset = 0; 1898 } 1899 1900 zgd->zgd_rl = ztest_range_lock(zd, object, offset, size, 1901 RL_READER); 1902 1903 error = dmu_buf_hold(os, object, offset, zgd, &db, 1904 DMU_READ_NO_PREFETCH); 1905 1906 if (error == 0) { 1907 blkptr_t *obp = dmu_buf_get_blkptr(db); 1908 if (obp) { 1909 ASSERT(BP_IS_HOLE(bp)); 1910 *bp = *obp; 1911 } 1912 1913 zgd->zgd_db = db; 1914 zgd->zgd_bp = bp; 1915 1916 ASSERT(db->db_offset == offset); 1917 ASSERT(db->db_size == size); 1918 1919 error = dmu_sync(zio, lr->lr_common.lrc_txg, 1920 ztest_get_done, zgd); 1921 1922 if (error == 0) 1923 return (0); 1924 } 1925 } 1926 1927 ztest_get_done(zgd, error); 1928 1929 return (error); 1930} 1931 1932static void * 1933ztest_lr_alloc(size_t lrsize, char *name) 1934{ 1935 char *lr; 1936 size_t namesize = name ? strlen(name) + 1 : 0; 1937 1938 lr = umem_zalloc(lrsize + namesize, UMEM_NOFAIL); 1939 1940 if (name) 1941 bcopy(name, lr + lrsize, namesize); 1942 1943 return (lr); 1944} 1945 1946void 1947ztest_lr_free(void *lr, size_t lrsize, char *name) 1948{ 1949 size_t namesize = name ? strlen(name) + 1 : 0; 1950 1951 umem_free(lr, lrsize + namesize); 1952} 1953 1954/* 1955 * Lookup a bunch of objects. Returns the number of objects not found. 1956 */ 1957static int 1958ztest_lookup(ztest_ds_t *zd, ztest_od_t *od, int count) 1959{ 1960 int missing = 0; 1961 int error; 1962 1963 ASSERT(_mutex_held(&zd->zd_dirobj_lock)); 1964 1965 for (int i = 0; i < count; i++, od++) { 1966 od->od_object = 0; 1967 error = zap_lookup(zd->zd_os, od->od_dir, od->od_name, 1968 sizeof (uint64_t), 1, &od->od_object); 1969 if (error) { 1970 ASSERT(error == ENOENT); 1971 ASSERT(od->od_object == 0); 1972 missing++; 1973 } else { 1974 dmu_buf_t *db; 1975 ztest_block_tag_t *bbt; 1976 dmu_object_info_t doi; 1977 1978 ASSERT(od->od_object != 0); 1979 ASSERT(missing == 0); /* there should be no gaps */ 1980 1981 ztest_object_lock(zd, od->od_object, RL_READER); 1982 VERIFY3U(0, ==, dmu_bonus_hold(zd->zd_os, 1983 od->od_object, FTAG, &db)); 1984 dmu_object_info_from_db(db, &doi); 1985 bbt = ztest_bt_bonus(db); 1986 ASSERT3U(bbt->bt_magic, ==, BT_MAGIC); 1987 od->od_type = doi.doi_type; 1988 od->od_blocksize = doi.doi_data_block_size; 1989 od->od_gen = bbt->bt_gen; 1990 dmu_buf_rele(db, FTAG); 1991 ztest_object_unlock(zd, od->od_object); 1992 } 1993 } 1994 1995 return (missing); 1996} 1997 1998static int 1999ztest_create(ztest_ds_t *zd, ztest_od_t *od, int count) 2000{ 2001 int missing = 0; 2002 2003 ASSERT(_mutex_held(&zd->zd_dirobj_lock)); 2004 2005 for (int i = 0; i < count; i++, od++) { 2006 if (missing) { 2007 od->od_object = 0; 2008 missing++; 2009 continue; 2010 } 2011 2012 lr_create_t *lr = ztest_lr_alloc(sizeof (*lr), od->od_name); 2013 2014 lr->lr_doid = od->od_dir; 2015 lr->lr_foid = 0; /* 0 to allocate, > 0 to claim */ 2016 lr->lrz_type = od->od_crtype; 2017 lr->lrz_blocksize = od->od_crblocksize; 2018 lr->lrz_ibshift = ztest_random_ibshift(); 2019 lr->lrz_bonustype = DMU_OT_UINT64_OTHER; 2020 lr->lrz_bonuslen = dmu_bonus_max(); 2021 lr->lr_gen = od->od_crgen; 2022 lr->lr_crtime[0] = time(NULL); 2023 2024 if (ztest_replay_create(zd, lr, B_FALSE) != 0) { 2025 ASSERT(missing == 0); 2026 od->od_object = 0; 2027 missing++; 2028 } else { 2029 od->od_object = lr->lr_foid; 2030 od->od_type = od->od_crtype; 2031 od->od_blocksize = od->od_crblocksize; 2032 od->od_gen = od->od_crgen; 2033 ASSERT(od->od_object != 0); 2034 } 2035 2036 ztest_lr_free(lr, sizeof (*lr), od->od_name); 2037 } 2038 2039 return (missing); 2040} 2041 2042static int 2043ztest_remove(ztest_ds_t *zd, ztest_od_t *od, int count) 2044{ 2045 int missing = 0; 2046 int error; 2047 2048 ASSERT(_mutex_held(&zd->zd_dirobj_lock)); 2049 2050 od += count - 1; 2051 2052 for (int i = count - 1; i >= 0; i--, od--) { 2053 if (missing) { 2054 missing++; 2055 continue; 2056 } 2057 2058 /* 2059 * No object was found. 2060 */ 2061 if (od->od_object == 0) 2062 continue; 2063 2064 lr_remove_t *lr = ztest_lr_alloc(sizeof (*lr), od->od_name); 2065 2066 lr->lr_doid = od->od_dir; 2067 2068 if ((error = ztest_replay_remove(zd, lr, B_FALSE)) != 0) { 2069 ASSERT3U(error, ==, ENOSPC); 2070 missing++; 2071 } else { 2072 od->od_object = 0; 2073 } 2074 ztest_lr_free(lr, sizeof (*lr), od->od_name); 2075 } 2076 2077 return (missing); 2078} 2079 2080static int 2081ztest_write(ztest_ds_t *zd, uint64_t object, uint64_t offset, uint64_t size, 2082 void *data) 2083{ 2084 lr_write_t *lr; 2085 int error; 2086 2087 lr = ztest_lr_alloc(sizeof (*lr) + size, NULL); 2088 2089 lr->lr_foid = object; 2090 lr->lr_offset = offset; 2091 lr->lr_length = size; 2092 lr->lr_blkoff = 0; 2093 BP_ZERO(&lr->lr_blkptr); 2094 2095 bcopy(data, lr + 1, size); 2096 2097 error = ztest_replay_write(zd, lr, B_FALSE); 2098 2099 ztest_lr_free(lr, sizeof (*lr) + size, NULL); 2100 2101 return (error); 2102} 2103 2104static int 2105ztest_truncate(ztest_ds_t *zd, uint64_t object, uint64_t offset, uint64_t size) 2106{ 2107 lr_truncate_t *lr; 2108 int error; 2109 2110 lr = ztest_lr_alloc(sizeof (*lr), NULL); 2111 2112 lr->lr_foid = object; 2113 lr->lr_offset = offset; 2114 lr->lr_length = size; 2115 2116 error = ztest_replay_truncate(zd, lr, B_FALSE); 2117 2118 ztest_lr_free(lr, sizeof (*lr), NULL); 2119 2120 return (error); 2121} 2122 2123static int 2124ztest_setattr(ztest_ds_t *zd, uint64_t object) 2125{ 2126 lr_setattr_t *lr; 2127 int error; 2128 2129 lr = ztest_lr_alloc(sizeof (*lr), NULL); 2130 2131 lr->lr_foid = object; 2132 lr->lr_size = 0; 2133 lr->lr_mode = 0; 2134 2135 error = ztest_replay_setattr(zd, lr, B_FALSE); 2136 2137 ztest_lr_free(lr, sizeof (*lr), NULL); 2138 2139 return (error); 2140} 2141 2142static void 2143ztest_prealloc(ztest_ds_t *zd, uint64_t object, uint64_t offset, uint64_t size) 2144{ 2145 objset_t *os = zd->zd_os; 2146 dmu_tx_t *tx; 2147 uint64_t txg; 2148 rl_t *rl; 2149 2150 txg_wait_synced(dmu_objset_pool(os), 0); 2151 2152 ztest_object_lock(zd, object, RL_READER); 2153 rl = ztest_range_lock(zd, object, offset, size, RL_WRITER); 2154 2155 tx = dmu_tx_create(os); 2156 2157 dmu_tx_hold_write(tx, object, offset, size); 2158 2159 txg = ztest_tx_assign(tx, TXG_WAIT, FTAG); 2160 2161 if (txg != 0) { 2162 dmu_prealloc(os, object, offset, size, tx); 2163 dmu_tx_commit(tx); 2164 txg_wait_synced(dmu_objset_pool(os), txg); 2165 } else { 2166 (void) dmu_free_long_range(os, object, offset, size); 2167 } 2168 2169 ztest_range_unlock(rl); 2170 ztest_object_unlock(zd, object); 2171} 2172 2173static void 2174ztest_io(ztest_ds_t *zd, uint64_t object, uint64_t offset) 2175{ 2176 int err; 2177 ztest_block_tag_t wbt; 2178 dmu_object_info_t doi; 2179 enum ztest_io_type io_type; 2180 uint64_t blocksize; 2181 void *data; 2182 2183 VERIFY(dmu_object_info(zd->zd_os, object, &doi) == 0); 2184 blocksize = doi.doi_data_block_size; 2185 data = umem_alloc(blocksize, UMEM_NOFAIL); 2186 2187 /* 2188 * Pick an i/o type at random, biased toward writing block tags. 2189 */ 2190 io_type = ztest_random(ZTEST_IO_TYPES); 2191 if (ztest_random(2) == 0) 2192 io_type = ZTEST_IO_WRITE_TAG; 2193 2194 (void) rw_rdlock(&zd->zd_zilog_lock); 2195 2196 switch (io_type) { 2197 2198 case ZTEST_IO_WRITE_TAG: 2199 ztest_bt_generate(&wbt, zd->zd_os, object, offset, 0, 0, 0); 2200 (void) ztest_write(zd, object, offset, sizeof (wbt), &wbt); 2201 break; 2202 2203 case ZTEST_IO_WRITE_PATTERN: 2204 (void) memset(data, 'a' + (object + offset) % 5, blocksize); 2205 if (ztest_random(2) == 0) { 2206 /* 2207 * Induce fletcher2 collisions to ensure that 2208 * zio_ddt_collision() detects and resolves them 2209 * when using fletcher2-verify for deduplication. 2210 */ 2211 ((uint64_t *)data)[0] ^= 1ULL << 63; 2212 ((uint64_t *)data)[4] ^= 1ULL << 63; 2213 } 2214 (void) ztest_write(zd, object, offset, blocksize, data); 2215 break; 2216 2217 case ZTEST_IO_WRITE_ZEROES: 2218 bzero(data, blocksize); 2219 (void) ztest_write(zd, object, offset, blocksize, data); 2220 break; 2221 2222 case ZTEST_IO_TRUNCATE: 2223 (void) ztest_truncate(zd, object, offset, blocksize); 2224 break; 2225 2226 case ZTEST_IO_SETATTR: 2227 (void) ztest_setattr(zd, object); 2228 break; 2229 2230 case ZTEST_IO_REWRITE: 2231 (void) rw_rdlock(&ztest_name_lock); 2232 err = ztest_dsl_prop_set_uint64(zd->zd_name, 2233 ZFS_PROP_CHECKSUM, spa_dedup_checksum(ztest_spa), 2234 B_FALSE); 2235 VERIFY(err == 0 || err == ENOSPC); 2236 err = ztest_dsl_prop_set_uint64(zd->zd_name, 2237 ZFS_PROP_COMPRESSION, 2238 ztest_random_dsl_prop(ZFS_PROP_COMPRESSION), 2239 B_FALSE); 2240 VERIFY(err == 0 || err == ENOSPC); 2241 (void) rw_unlock(&ztest_name_lock); 2242 2243 VERIFY0(dmu_read(zd->zd_os, object, offset, blocksize, data, 2244 DMU_READ_NO_PREFETCH)); 2245 2246 (void) ztest_write(zd, object, offset, blocksize, data); 2247 break; 2248 } 2249 2250 (void) rw_unlock(&zd->zd_zilog_lock); 2251 2252 umem_free(data, blocksize); 2253} 2254 2255/* 2256 * Initialize an object description template. 2257 */ 2258static void 2259ztest_od_init(ztest_od_t *od, uint64_t id, char *tag, uint64_t index, 2260 dmu_object_type_t type, uint64_t blocksize, uint64_t gen) 2261{ 2262 od->od_dir = ZTEST_DIROBJ; 2263 od->od_object = 0; 2264 2265 od->od_crtype = type; 2266 od->od_crblocksize = blocksize ? blocksize : ztest_random_blocksize(); 2267 od->od_crgen = gen; 2268 2269 od->od_type = DMU_OT_NONE; 2270 od->od_blocksize = 0; 2271 od->od_gen = 0; 2272 2273 (void) snprintf(od->od_name, sizeof (od->od_name), "%s(%lld)[%llu]", 2274 tag, (int64_t)id, index); 2275} 2276 2277/* 2278 * Lookup or create the objects for a test using the od template. 2279 * If the objects do not all exist, or if 'remove' is specified, 2280 * remove any existing objects and create new ones. Otherwise, 2281 * use the existing objects. 2282 */ 2283static int 2284ztest_object_init(ztest_ds_t *zd, ztest_od_t *od, size_t size, boolean_t remove) 2285{ 2286 int count = size / sizeof (*od); 2287 int rv = 0; 2288 2289 VERIFY(mutex_lock(&zd->zd_dirobj_lock) == 0); 2290 if ((ztest_lookup(zd, od, count) != 0 || remove) && 2291 (ztest_remove(zd, od, count) != 0 || 2292 ztest_create(zd, od, count) != 0)) 2293 rv = -1; 2294 zd->zd_od = od; 2295 VERIFY(mutex_unlock(&zd->zd_dirobj_lock) == 0); 2296 2297 return (rv); 2298} 2299 2300/* ARGSUSED */ 2301void 2302ztest_zil_commit(ztest_ds_t *zd, uint64_t id) 2303{ 2304 zilog_t *zilog = zd->zd_zilog; 2305 2306 (void) rw_rdlock(&zd->zd_zilog_lock); 2307 2308 zil_commit(zilog, ztest_random(ZTEST_OBJECTS)); 2309 2310 /* 2311 * Remember the committed values in zd, which is in parent/child 2312 * shared memory. If we die, the next iteration of ztest_run() 2313 * will verify that the log really does contain this record. 2314 */ 2315 mutex_enter(&zilog->zl_lock); 2316 ASSERT(zd->zd_shared != NULL); 2317 ASSERT3U(zd->zd_shared->zd_seq, <=, zilog->zl_commit_lr_seq); 2318 zd->zd_shared->zd_seq = zilog->zl_commit_lr_seq; 2319 mutex_exit(&zilog->zl_lock); 2320 2321 (void) rw_unlock(&zd->zd_zilog_lock); 2322} 2323 2324/* 2325 * This function is designed to simulate the operations that occur during a 2326 * mount/unmount operation. We hold the dataset across these operations in an 2327 * attempt to expose any implicit assumptions about ZIL management. 2328 */ 2329/* ARGSUSED */ 2330void 2331ztest_zil_remount(ztest_ds_t *zd, uint64_t id) 2332{ 2333 objset_t *os = zd->zd_os; 2334 2335 /* 2336 * We grab the zd_dirobj_lock to ensure that no other thread is 2337 * updating the zil (i.e. adding in-memory log records) and the 2338 * zd_zilog_lock to block any I/O. 2339 */ 2340 VERIFY0(mutex_lock(&zd->zd_dirobj_lock)); 2341 (void) rw_wrlock(&zd->zd_zilog_lock); 2342 2343 /* zfsvfs_teardown() */ 2344 zil_close(zd->zd_zilog); 2345 2346 /* zfsvfs_setup() */ 2347 VERIFY(zil_open(os, ztest_get_data) == zd->zd_zilog); 2348 zil_replay(os, zd, ztest_replay_vector); 2349 2350 (void) rw_unlock(&zd->zd_zilog_lock); 2351 VERIFY(mutex_unlock(&zd->zd_dirobj_lock) == 0); 2352} 2353 2354/* 2355 * Verify that we can't destroy an active pool, create an existing pool, 2356 * or create a pool with a bad vdev spec. 2357 */ 2358/* ARGSUSED */ 2359void 2360ztest_spa_create_destroy(ztest_ds_t *zd, uint64_t id) 2361{ 2362 ztest_shared_opts_t *zo = &ztest_opts; 2363 spa_t *spa; 2364 nvlist_t *nvroot; 2365 2366 /* 2367 * Attempt to create using a bad file. 2368 */ 2369 nvroot = make_vdev_root("/dev/bogus", NULL, NULL, 0, 0, 0, 0, 0, 1); 2370 VERIFY3U(ENOENT, ==, 2371 spa_create("ztest_bad_file", nvroot, NULL, NULL)); 2372 nvlist_free(nvroot); 2373 2374 /* 2375 * Attempt to create using a bad mirror. 2376 */ 2377 nvroot = make_vdev_root("/dev/bogus", NULL, NULL, 0, 0, 0, 0, 2, 1); 2378 VERIFY3U(ENOENT, ==, 2379 spa_create("ztest_bad_mirror", nvroot, NULL, NULL)); 2380 nvlist_free(nvroot); 2381 2382 /* 2383 * Attempt to create an existing pool. It shouldn't matter 2384 * what's in the nvroot; we should fail with EEXIST. 2385 */ 2386 (void) rw_rdlock(&ztest_name_lock); 2387 nvroot = make_vdev_root("/dev/bogus", NULL, NULL, 0, 0, 0, 0, 0, 1); 2388 VERIFY3U(EEXIST, ==, spa_create(zo->zo_pool, nvroot, NULL, NULL)); 2389 nvlist_free(nvroot); 2390 VERIFY3U(0, ==, spa_open(zo->zo_pool, &spa, FTAG)); 2391 VERIFY3U(EBUSY, ==, spa_destroy(zo->zo_pool)); 2392 spa_close(spa, FTAG); 2393 2394 (void) rw_unlock(&ztest_name_lock); 2395} 2396 2397/* ARGSUSED */ 2398void 2399ztest_spa_upgrade(ztest_ds_t *zd, uint64_t id) 2400{ 2401 spa_t *spa; 2402 uint64_t initial_version = SPA_VERSION_INITIAL; 2403 uint64_t version, newversion; 2404 nvlist_t *nvroot, *props; 2405 char *name; 2406 2407 VERIFY0(mutex_lock(&ztest_vdev_lock)); 2408 name = kmem_asprintf("%s_upgrade", ztest_opts.zo_pool); 2409 2410 /* 2411 * Clean up from previous runs. 2412 */ 2413 (void) spa_destroy(name); 2414 2415 nvroot = make_vdev_root(NULL, NULL, name, ztest_opts.zo_vdev_size, 0, 2416 0, ztest_opts.zo_raidz, ztest_opts.zo_mirrors, 1); 2417 2418 /* 2419 * If we're configuring a RAIDZ device then make sure that the 2420 * the initial version is capable of supporting that feature. 2421 */ 2422 switch (ztest_opts.zo_raidz_parity) { 2423 case 0: 2424 case 1: 2425 initial_version = SPA_VERSION_INITIAL; 2426 break; 2427 case 2: 2428 initial_version = SPA_VERSION_RAIDZ2; 2429 break; 2430 case 3: 2431 initial_version = SPA_VERSION_RAIDZ3; 2432 break; 2433 } 2434 2435 /* 2436 * Create a pool with a spa version that can be upgraded. Pick 2437 * a value between initial_version and SPA_VERSION_BEFORE_FEATURES. 2438 */ 2439 do { 2440 version = ztest_random_spa_version(initial_version); 2441 } while (version > SPA_VERSION_BEFORE_FEATURES); 2442 2443 props = fnvlist_alloc(); 2444 fnvlist_add_uint64(props, 2445 zpool_prop_to_name(ZPOOL_PROP_VERSION), version); 2446 VERIFY0(spa_create(name, nvroot, props, NULL)); 2447 fnvlist_free(nvroot); 2448 fnvlist_free(props); 2449 2450 VERIFY0(spa_open(name, &spa, FTAG)); 2451 VERIFY3U(spa_version(spa), ==, version); 2452 newversion = ztest_random_spa_version(version + 1); 2453 2454 if (ztest_opts.zo_verbose >= 4) { 2455 (void) printf("upgrading spa version from %llu to %llu\n", 2456 (u_longlong_t)version, (u_longlong_t)newversion); 2457 } 2458 2459 spa_upgrade(spa, newversion); 2460 VERIFY3U(spa_version(spa), >, version); 2461 VERIFY3U(spa_version(spa), ==, fnvlist_lookup_uint64(spa->spa_config, 2462 zpool_prop_to_name(ZPOOL_PROP_VERSION))); 2463 spa_close(spa, FTAG); 2464 2465 strfree(name); 2466 VERIFY0(mutex_unlock(&ztest_vdev_lock)); 2467} 2468 2469static vdev_t * 2470vdev_lookup_by_path(vdev_t *vd, const char *path) 2471{ 2472 vdev_t *mvd; 2473 2474 if (vd->vdev_path != NULL && strcmp(path, vd->vdev_path) == 0) 2475 return (vd); 2476 2477 for (int c = 0; c < vd->vdev_children; c++) 2478 if ((mvd = vdev_lookup_by_path(vd->vdev_child[c], path)) != 2479 NULL) 2480 return (mvd); 2481 2482 return (NULL); 2483} 2484 2485/* 2486 * Find the first available hole which can be used as a top-level. 2487 */ 2488int 2489find_vdev_hole(spa_t *spa) 2490{ 2491 vdev_t *rvd = spa->spa_root_vdev; 2492 int c; 2493 2494 ASSERT(spa_config_held(spa, SCL_VDEV, RW_READER) == SCL_VDEV); 2495 2496 for (c = 0; c < rvd->vdev_children; c++) { 2497 vdev_t *cvd = rvd->vdev_child[c]; 2498 2499 if (cvd->vdev_ishole) 2500 break; 2501 } 2502 return (c); 2503} 2504 2505/* 2506 * Verify that vdev_add() works as expected. 2507 */ 2508/* ARGSUSED */ 2509void 2510ztest_vdev_add_remove(ztest_ds_t *zd, uint64_t id) 2511{ 2512 ztest_shared_t *zs = ztest_shared; 2513 spa_t *spa = ztest_spa; 2514 uint64_t leaves; 2515 uint64_t guid; 2516 nvlist_t *nvroot; 2517 int error; 2518 2519 VERIFY(mutex_lock(&ztest_vdev_lock) == 0); 2520 leaves = MAX(zs->zs_mirrors + zs->zs_splits, 1) * ztest_opts.zo_raidz; 2521 2522 spa_config_enter(spa, SCL_VDEV, FTAG, RW_READER); 2523 2524 ztest_shared->zs_vdev_next_leaf = find_vdev_hole(spa) * leaves; 2525 2526 /* 2527 * If we have slogs then remove them 1/4 of the time. 2528 */ 2529 if (spa_has_slogs(spa) && ztest_random(4) == 0) { 2530 /* 2531 * Grab the guid from the head of the log class rotor. 2532 */ 2533 guid = spa_log_class(spa)->mc_rotor->mg_vd->vdev_guid; 2534 2535 spa_config_exit(spa, SCL_VDEV, FTAG); 2536 2537 /* 2538 * We have to grab the zs_name_lock as writer to 2539 * prevent a race between removing a slog (dmu_objset_find) 2540 * and destroying a dataset. Removing the slog will 2541 * grab a reference on the dataset which may cause 2542 * dmu_objset_destroy() to fail with EBUSY thus 2543 * leaving the dataset in an inconsistent state. 2544 */ 2545 VERIFY(rw_wrlock(&ztest_name_lock) == 0); 2546 error = spa_vdev_remove(spa, guid, B_FALSE); 2547 VERIFY(rw_unlock(&ztest_name_lock) == 0); 2548 2549 if (error && error != EEXIST) 2550 fatal(0, "spa_vdev_remove() = %d", error); 2551 } else { 2552 spa_config_exit(spa, SCL_VDEV, FTAG); 2553 2554 /* 2555 * Make 1/4 of the devices be log devices. 2556 */ 2557 nvroot = make_vdev_root(NULL, NULL, NULL, 2558 ztest_opts.zo_vdev_size, 0, 2559 ztest_random(4) == 0, ztest_opts.zo_raidz, 2560 zs->zs_mirrors, 1); 2561 2562 error = spa_vdev_add(spa, nvroot); 2563 nvlist_free(nvroot); 2564 2565 if (error == ENOSPC) 2566 ztest_record_enospc("spa_vdev_add"); 2567 else if (error != 0) 2568 fatal(0, "spa_vdev_add() = %d", error); 2569 } 2570 2571 VERIFY(mutex_unlock(&ztest_vdev_lock) == 0); 2572} 2573 2574/* 2575 * Verify that adding/removing aux devices (l2arc, hot spare) works as expected. 2576 */ 2577/* ARGSUSED */ 2578void 2579ztest_vdev_aux_add_remove(ztest_ds_t *zd, uint64_t id) 2580{ 2581 ztest_shared_t *zs = ztest_shared; 2582 spa_t *spa = ztest_spa; 2583 vdev_t *rvd = spa->spa_root_vdev; 2584 spa_aux_vdev_t *sav; 2585 char *aux; 2586 uint64_t guid = 0; 2587 int error; 2588 2589 if (ztest_random(2) == 0) { 2590 sav = &spa->spa_spares; 2591 aux = ZPOOL_CONFIG_SPARES; 2592 } else { 2593 sav = &spa->spa_l2cache; 2594 aux = ZPOOL_CONFIG_L2CACHE; 2595 } 2596 2597 VERIFY(mutex_lock(&ztest_vdev_lock) == 0); 2598 2599 spa_config_enter(spa, SCL_VDEV, FTAG, RW_READER); 2600 2601 if (sav->sav_count != 0 && ztest_random(4) == 0) { 2602 /* 2603 * Pick a random device to remove. 2604 */ 2605 guid = sav->sav_vdevs[ztest_random(sav->sav_count)]->vdev_guid; 2606 } else { 2607 /* 2608 * Find an unused device we can add. 2609 */ 2610 zs->zs_vdev_aux = 0; 2611 for (;;) { 2612 char path[MAXPATHLEN]; 2613 int c; 2614 (void) snprintf(path, sizeof (path), ztest_aux_template, 2615 ztest_opts.zo_dir, ztest_opts.zo_pool, aux, 2616 zs->zs_vdev_aux); 2617 for (c = 0; c < sav->sav_count; c++) 2618 if (strcmp(sav->sav_vdevs[c]->vdev_path, 2619 path) == 0) 2620 break; 2621 if (c == sav->sav_count && 2622 vdev_lookup_by_path(rvd, path) == NULL) 2623 break; 2624 zs->zs_vdev_aux++; 2625 } 2626 } 2627 2628 spa_config_exit(spa, SCL_VDEV, FTAG); 2629 2630 if (guid == 0) { 2631 /* 2632 * Add a new device. 2633 */ 2634 nvlist_t *nvroot = make_vdev_root(NULL, aux, NULL, 2635 (ztest_opts.zo_vdev_size * 5) / 4, 0, 0, 0, 0, 1); 2636 error = spa_vdev_add(spa, nvroot); 2637 if (error != 0) 2638 fatal(0, "spa_vdev_add(%p) = %d", nvroot, error); 2639 nvlist_free(nvroot); 2640 } else { 2641 /* 2642 * Remove an existing device. Sometimes, dirty its 2643 * vdev state first to make sure we handle removal 2644 * of devices that have pending state changes. 2645 */ 2646 if (ztest_random(2) == 0) 2647 (void) vdev_online(spa, guid, 0, NULL); 2648 2649 error = spa_vdev_remove(spa, guid, B_FALSE); 2650 if (error != 0 && error != EBUSY) 2651 fatal(0, "spa_vdev_remove(%llu) = %d", guid, error); 2652 } 2653 2654 VERIFY(mutex_unlock(&ztest_vdev_lock) == 0); 2655} 2656 2657/* 2658 * split a pool if it has mirror tlvdevs 2659 */ 2660/* ARGSUSED */ 2661void 2662ztest_split_pool(ztest_ds_t *zd, uint64_t id) 2663{ 2664 ztest_shared_t *zs = ztest_shared; 2665 spa_t *spa = ztest_spa; 2666 vdev_t *rvd = spa->spa_root_vdev; 2667 nvlist_t *tree, **child, *config, *split, **schild; 2668 uint_t c, children, schildren = 0, lastlogid = 0; 2669 int error = 0; 2670 2671 VERIFY(mutex_lock(&ztest_vdev_lock) == 0); 2672 2673 /* ensure we have a useable config; mirrors of raidz aren't supported */ 2674 if (zs->zs_mirrors < 3 || ztest_opts.zo_raidz > 1) { 2675 VERIFY(mutex_unlock(&ztest_vdev_lock) == 0); 2676 return; 2677 } 2678 2679 /* clean up the old pool, if any */ 2680 (void) spa_destroy("splitp"); 2681 2682 spa_config_enter(spa, SCL_VDEV, FTAG, RW_READER); 2683 2684 /* generate a config from the existing config */ 2685 mutex_enter(&spa->spa_props_lock); 2686 VERIFY(nvlist_lookup_nvlist(spa->spa_config, ZPOOL_CONFIG_VDEV_TREE, 2687 &tree) == 0); 2688 mutex_exit(&spa->spa_props_lock); 2689 2690 VERIFY(nvlist_lookup_nvlist_array(tree, ZPOOL_CONFIG_CHILDREN, &child, 2691 &children) == 0); 2692 2693 schild = malloc(rvd->vdev_children * sizeof (nvlist_t *)); 2694 for (c = 0; c < children; c++) { 2695 vdev_t *tvd = rvd->vdev_child[c]; 2696 nvlist_t **mchild; 2697 uint_t mchildren; 2698 2699 if (tvd->vdev_islog || tvd->vdev_ops == &vdev_hole_ops) { 2700 VERIFY(nvlist_alloc(&schild[schildren], NV_UNIQUE_NAME, 2701 0) == 0); 2702 VERIFY(nvlist_add_string(schild[schildren], 2703 ZPOOL_CONFIG_TYPE, VDEV_TYPE_HOLE) == 0); 2704 VERIFY(nvlist_add_uint64(schild[schildren], 2705 ZPOOL_CONFIG_IS_HOLE, 1) == 0); 2706 if (lastlogid == 0) 2707 lastlogid = schildren; 2708 ++schildren; 2709 continue; 2710 } 2711 lastlogid = 0; 2712 VERIFY(nvlist_lookup_nvlist_array(child[c], 2713 ZPOOL_CONFIG_CHILDREN, &mchild, &mchildren) == 0); 2714 VERIFY(nvlist_dup(mchild[0], &schild[schildren++], 0) == 0); 2715 } 2716 2717 /* OK, create a config that can be used to split */ 2718 VERIFY(nvlist_alloc(&split, NV_UNIQUE_NAME, 0) == 0); 2719 VERIFY(nvlist_add_string(split, ZPOOL_CONFIG_TYPE, 2720 VDEV_TYPE_ROOT) == 0); 2721 VERIFY(nvlist_add_nvlist_array(split, ZPOOL_CONFIG_CHILDREN, schild, 2722 lastlogid != 0 ? lastlogid : schildren) == 0); 2723 2724 VERIFY(nvlist_alloc(&config, NV_UNIQUE_NAME, 0) == 0); 2725 VERIFY(nvlist_add_nvlist(config, ZPOOL_CONFIG_VDEV_TREE, split) == 0); 2726 2727 for (c = 0; c < schildren; c++) 2728 nvlist_free(schild[c]); 2729 free(schild); 2730 nvlist_free(split); 2731 2732 spa_config_exit(spa, SCL_VDEV, FTAG); 2733 2734 (void) rw_wrlock(&ztest_name_lock); 2735 error = spa_vdev_split_mirror(spa, "splitp", config, NULL, B_FALSE); 2736 (void) rw_unlock(&ztest_name_lock); 2737 2738 nvlist_free(config); 2739 2740 if (error == 0) { 2741 (void) printf("successful split - results:\n"); 2742 mutex_enter(&spa_namespace_lock); 2743 show_pool_stats(spa); 2744 show_pool_stats(spa_lookup("splitp")); 2745 mutex_exit(&spa_namespace_lock); 2746 ++zs->zs_splits; 2747 --zs->zs_mirrors; 2748 } 2749 VERIFY(mutex_unlock(&ztest_vdev_lock) == 0); 2750 2751} 2752 2753/* 2754 * Verify that we can attach and detach devices. 2755 */ 2756/* ARGSUSED */ 2757void 2758ztest_vdev_attach_detach(ztest_ds_t *zd, uint64_t id) 2759{ 2760 ztest_shared_t *zs = ztest_shared; 2761 spa_t *spa = ztest_spa; 2762 spa_aux_vdev_t *sav = &spa->spa_spares; 2763 vdev_t *rvd = spa->spa_root_vdev; 2764 vdev_t *oldvd, *newvd, *pvd; 2765 nvlist_t *root; 2766 uint64_t leaves; 2767 uint64_t leaf, top; 2768 uint64_t ashift = ztest_get_ashift(); 2769 uint64_t oldguid, pguid; 2770 uint64_t oldsize, newsize; 2771 char oldpath[MAXPATHLEN], newpath[MAXPATHLEN]; 2772 int replacing; 2773 int oldvd_has_siblings = B_FALSE; 2774 int newvd_is_spare = B_FALSE; 2775 int oldvd_is_log; 2776 int error, expected_error; 2777 2778 VERIFY(mutex_lock(&ztest_vdev_lock) == 0); 2779 leaves = MAX(zs->zs_mirrors, 1) * ztest_opts.zo_raidz; 2780 2781 spa_config_enter(spa, SCL_VDEV, FTAG, RW_READER); 2782 2783 /* 2784 * Decide whether to do an attach or a replace. 2785 */ 2786 replacing = ztest_random(2); 2787 2788 /* 2789 * Pick a random top-level vdev. 2790 */ 2791 top = ztest_random_vdev_top(spa, B_TRUE); 2792 2793 /* 2794 * Pick a random leaf within it. 2795 */ 2796 leaf = ztest_random(leaves); 2797 2798 /* 2799 * Locate this vdev. 2800 */ 2801 oldvd = rvd->vdev_child[top]; 2802 if (zs->zs_mirrors >= 1) { 2803 ASSERT(oldvd->vdev_ops == &vdev_mirror_ops); 2804 ASSERT(oldvd->vdev_children >= zs->zs_mirrors); 2805 oldvd = oldvd->vdev_child[leaf / ztest_opts.zo_raidz]; 2806 } 2807 if (ztest_opts.zo_raidz > 1) { 2808 ASSERT(oldvd->vdev_ops == &vdev_raidz_ops); 2809 ASSERT(oldvd->vdev_children == ztest_opts.zo_raidz); 2810 oldvd = oldvd->vdev_child[leaf % ztest_opts.zo_raidz]; 2811 } 2812 2813 /* 2814 * If we're already doing an attach or replace, oldvd may be a 2815 * mirror vdev -- in which case, pick a random child. 2816 */ 2817 while (oldvd->vdev_children != 0) { 2818 oldvd_has_siblings = B_TRUE; 2819 ASSERT(oldvd->vdev_children >= 2); 2820 oldvd = oldvd->vdev_child[ztest_random(oldvd->vdev_children)]; 2821 } 2822 2823 oldguid = oldvd->vdev_guid; 2824 oldsize = vdev_get_min_asize(oldvd); 2825 oldvd_is_log = oldvd->vdev_top->vdev_islog; 2826 (void) strcpy(oldpath, oldvd->vdev_path); 2827 pvd = oldvd->vdev_parent; 2828 pguid = pvd->vdev_guid; 2829 2830 /* 2831 * If oldvd has siblings, then half of the time, detach it. 2832 */ 2833 if (oldvd_has_siblings && ztest_random(2) == 0) { 2834 spa_config_exit(spa, SCL_VDEV, FTAG); 2835 error = spa_vdev_detach(spa, oldguid, pguid, B_FALSE); 2836 if (error != 0 && error != ENODEV && error != EBUSY && 2837 error != ENOTSUP) 2838 fatal(0, "detach (%s) returned %d", oldpath, error); 2839 VERIFY(mutex_unlock(&ztest_vdev_lock) == 0); 2840 return; 2841 } 2842 2843 /* 2844 * For the new vdev, choose with equal probability between the two 2845 * standard paths (ending in either 'a' or 'b') or a random hot spare. 2846 */ 2847 if (sav->sav_count != 0 && ztest_random(3) == 0) { 2848 newvd = sav->sav_vdevs[ztest_random(sav->sav_count)]; 2849 newvd_is_spare = B_TRUE; 2850 (void) strcpy(newpath, newvd->vdev_path); 2851 } else { 2852 (void) snprintf(newpath, sizeof (newpath), ztest_dev_template, 2853 ztest_opts.zo_dir, ztest_opts.zo_pool, 2854 top * leaves + leaf); 2855 if (ztest_random(2) == 0) 2856 newpath[strlen(newpath) - 1] = 'b'; 2857 newvd = vdev_lookup_by_path(rvd, newpath); 2858 } 2859 2860 if (newvd) { 2861 newsize = vdev_get_min_asize(newvd); 2862 } else { 2863 /* 2864 * Make newsize a little bigger or smaller than oldsize. 2865 * If it's smaller, the attach should fail. 2866 * If it's larger, and we're doing a replace, 2867 * we should get dynamic LUN growth when we're done. 2868 */ 2869 newsize = 10 * oldsize / (9 + ztest_random(3)); 2870 } 2871 2872 /* 2873 * If pvd is not a mirror or root, the attach should fail with ENOTSUP, 2874 * unless it's a replace; in that case any non-replacing parent is OK. 2875 * 2876 * If newvd is already part of the pool, it should fail with EBUSY. 2877 * 2878 * If newvd is too small, it should fail with EOVERFLOW. 2879 */ 2880 if (pvd->vdev_ops != &vdev_mirror_ops && 2881 pvd->vdev_ops != &vdev_root_ops && (!replacing || 2882 pvd->vdev_ops == &vdev_replacing_ops || 2883 pvd->vdev_ops == &vdev_spare_ops)) 2884 expected_error = ENOTSUP; 2885 else if (newvd_is_spare && (!replacing || oldvd_is_log)) 2886 expected_error = ENOTSUP; 2887 else if (newvd == oldvd) 2888 expected_error = replacing ? 0 : EBUSY; 2889 else if (vdev_lookup_by_path(rvd, newpath) != NULL) 2890 expected_error = EBUSY; 2891 else if (newsize < oldsize) 2892 expected_error = EOVERFLOW; 2893 else if (ashift > oldvd->vdev_top->vdev_ashift) 2894 expected_error = EDOM; 2895 else 2896 expected_error = 0; 2897 2898 spa_config_exit(spa, SCL_VDEV, FTAG); 2899 2900 /* 2901 * Build the nvlist describing newpath. 2902 */ 2903 root = make_vdev_root(newpath, NULL, NULL, newvd == NULL ? newsize : 0, 2904 ashift, 0, 0, 0, 1); 2905 2906 error = spa_vdev_attach(spa, oldguid, root, replacing); 2907 2908 nvlist_free(root); 2909 2910 /* 2911 * If our parent was the replacing vdev, but the replace completed, 2912 * then instead of failing with ENOTSUP we may either succeed, 2913 * fail with ENODEV, or fail with EOVERFLOW. 2914 */ 2915 if (expected_error == ENOTSUP && 2916 (error == 0 || error == ENODEV || error == EOVERFLOW)) 2917 expected_error = error; 2918 2919 /* 2920 * If someone grew the LUN, the replacement may be too small. 2921 */ 2922 if (error == EOVERFLOW || error == EBUSY) 2923 expected_error = error; 2924 2925 /* XXX workaround 6690467 */ 2926 if (error != expected_error && expected_error != EBUSY) { 2927 fatal(0, "attach (%s %llu, %s %llu, %d) " 2928 "returned %d, expected %d", 2929 oldpath, oldsize, newpath, 2930 newsize, replacing, error, expected_error); 2931 } 2932 2933 VERIFY(mutex_unlock(&ztest_vdev_lock) == 0); 2934} 2935 2936/* 2937 * Callback function which expands the physical size of the vdev. 2938 */ 2939vdev_t * 2940grow_vdev(vdev_t *vd, void *arg) 2941{ 2942 spa_t *spa = vd->vdev_spa; 2943 size_t *newsize = arg; 2944 size_t fsize; 2945 int fd; 2946 2947 ASSERT(spa_config_held(spa, SCL_STATE, RW_READER) == SCL_STATE); 2948 ASSERT(vd->vdev_ops->vdev_op_leaf); 2949 2950 if ((fd = open(vd->vdev_path, O_RDWR)) == -1) 2951 return (vd); 2952 2953 fsize = lseek(fd, 0, SEEK_END); 2954 (void) ftruncate(fd, *newsize); 2955 2956 if (ztest_opts.zo_verbose >= 6) { 2957 (void) printf("%s grew from %lu to %lu bytes\n", 2958 vd->vdev_path, (ulong_t)fsize, (ulong_t)*newsize); 2959 } 2960 (void) close(fd); 2961 return (NULL); 2962} 2963 2964/* 2965 * Callback function which expands a given vdev by calling vdev_online(). 2966 */ 2967/* ARGSUSED */ 2968vdev_t * 2969online_vdev(vdev_t *vd, void *arg) 2970{ 2971 spa_t *spa = vd->vdev_spa; 2972 vdev_t *tvd = vd->vdev_top; 2973 uint64_t guid = vd->vdev_guid; 2974 uint64_t generation = spa->spa_config_generation + 1; 2975 vdev_state_t newstate = VDEV_STATE_UNKNOWN; 2976 int error; 2977 2978 ASSERT(spa_config_held(spa, SCL_STATE, RW_READER) == SCL_STATE); 2979 ASSERT(vd->vdev_ops->vdev_op_leaf); 2980 2981 /* Calling vdev_online will initialize the new metaslabs */ 2982 spa_config_exit(spa, SCL_STATE, spa); 2983 error = vdev_online(spa, guid, ZFS_ONLINE_EXPAND, &newstate); 2984 spa_config_enter(spa, SCL_STATE, spa, RW_READER); 2985 2986 /* 2987 * If vdev_online returned an error or the underlying vdev_open 2988 * failed then we abort the expand. The only way to know that 2989 * vdev_open fails is by checking the returned newstate. 2990 */ 2991 if (error || newstate != VDEV_STATE_HEALTHY) { 2992 if (ztest_opts.zo_verbose >= 5) { 2993 (void) printf("Unable to expand vdev, state %llu, " 2994 "error %d\n", (u_longlong_t)newstate, error); 2995 } 2996 return (vd); 2997 } 2998 ASSERT3U(newstate, ==, VDEV_STATE_HEALTHY); 2999 3000 /* 3001 * Since we dropped the lock we need to ensure that we're 3002 * still talking to the original vdev. It's possible this 3003 * vdev may have been detached/replaced while we were 3004 * trying to online it. 3005 */ 3006 if (generation != spa->spa_config_generation) { 3007 if (ztest_opts.zo_verbose >= 5) { 3008 (void) printf("vdev configuration has changed, " 3009 "guid %llu, state %llu, expected gen %llu, " 3010 "got gen %llu\n", 3011 (u_longlong_t)guid, 3012 (u_longlong_t)tvd->vdev_state, 3013 (u_longlong_t)generation, 3014 (u_longlong_t)spa->spa_config_generation); 3015 } 3016 return (vd); 3017 } 3018 return (NULL); 3019} 3020 3021/* 3022 * Traverse the vdev tree calling the supplied function. 3023 * We continue to walk the tree until we either have walked all 3024 * children or we receive a non-NULL return from the callback. 3025 * If a NULL callback is passed, then we just return back the first 3026 * leaf vdev we encounter. 3027 */ 3028vdev_t * 3029vdev_walk_tree(vdev_t *vd, vdev_t *(*func)(vdev_t *, void *), void *arg) 3030{ 3031 if (vd->vdev_ops->vdev_op_leaf) { 3032 if (func == NULL) 3033 return (vd); 3034 else 3035 return (func(vd, arg)); 3036 } 3037 3038 for (uint_t c = 0; c < vd->vdev_children; c++) { 3039 vdev_t *cvd = vd->vdev_child[c]; 3040 if ((cvd = vdev_walk_tree(cvd, func, arg)) != NULL) 3041 return (cvd); 3042 } 3043 return (NULL); 3044} 3045 3046/* 3047 * Verify that dynamic LUN growth works as expected. 3048 */ 3049/* ARGSUSED */ 3050void 3051ztest_vdev_LUN_growth(ztest_ds_t *zd, uint64_t id) 3052{ 3053 spa_t *spa = ztest_spa; 3054 vdev_t *vd, *tvd; 3055 metaslab_class_t *mc; 3056 metaslab_group_t *mg; 3057 size_t psize, newsize; 3058 uint64_t top; 3059 uint64_t old_class_space, new_class_space, old_ms_count, new_ms_count; 3060 3061 VERIFY(mutex_lock(&ztest_vdev_lock) == 0); 3062 spa_config_enter(spa, SCL_STATE, spa, RW_READER); 3063 3064 top = ztest_random_vdev_top(spa, B_TRUE); 3065 3066 tvd = spa->spa_root_vdev->vdev_child[top]; 3067 mg = tvd->vdev_mg; 3068 mc = mg->mg_class; 3069 old_ms_count = tvd->vdev_ms_count; 3070 old_class_space = metaslab_class_get_space(mc); 3071 3072 /* 3073 * Determine the size of the first leaf vdev associated with 3074 * our top-level device. 3075 */ 3076 vd = vdev_walk_tree(tvd, NULL, NULL); 3077 ASSERT3P(vd, !=, NULL); 3078 ASSERT(vd->vdev_ops->vdev_op_leaf); 3079 3080 psize = vd->vdev_psize; 3081 3082 /* 3083 * We only try to expand the vdev if it's healthy, less than 4x its 3084 * original size, and it has a valid psize. 3085 */ 3086 if (tvd->vdev_state != VDEV_STATE_HEALTHY || 3087 psize == 0 || psize >= 4 * ztest_opts.zo_vdev_size) { 3088 spa_config_exit(spa, SCL_STATE, spa); 3089 VERIFY(mutex_unlock(&ztest_vdev_lock) == 0); 3090 return; 3091 } 3092 ASSERT(psize > 0); 3093 newsize = psize + psize / 8; 3094 ASSERT3U(newsize, >, psize); 3095 3096 if (ztest_opts.zo_verbose >= 6) { 3097 (void) printf("Expanding LUN %s from %lu to %lu\n", 3098 vd->vdev_path, (ulong_t)psize, (ulong_t)newsize); 3099 } 3100 3101 /* 3102 * Growing the vdev is a two step process: 3103 * 1). expand the physical size (i.e. relabel) 3104 * 2). online the vdev to create the new metaslabs 3105 */ 3106 if (vdev_walk_tree(tvd, grow_vdev, &newsize) != NULL || 3107 vdev_walk_tree(tvd, online_vdev, NULL) != NULL || 3108 tvd->vdev_state != VDEV_STATE_HEALTHY) { 3109 if (ztest_opts.zo_verbose >= 5) { 3110 (void) printf("Could not expand LUN because " 3111 "the vdev configuration changed.\n"); 3112 } 3113 spa_config_exit(spa, SCL_STATE, spa); 3114 VERIFY(mutex_unlock(&ztest_vdev_lock) == 0); 3115 return; 3116 } 3117 3118 spa_config_exit(spa, SCL_STATE, spa); 3119 3120 /* 3121 * Expanding the LUN will update the config asynchronously, 3122 * thus we must wait for the async thread to complete any 3123 * pending tasks before proceeding. 3124 */ 3125 for (;;) { 3126 boolean_t done; 3127 mutex_enter(&spa->spa_async_lock); 3128 done = (spa->spa_async_thread == NULL && !spa->spa_async_tasks); 3129 mutex_exit(&spa->spa_async_lock); 3130 if (done) 3131 break; 3132 txg_wait_synced(spa_get_dsl(spa), 0); 3133 (void) poll(NULL, 0, 100); 3134 } 3135 3136 spa_config_enter(spa, SCL_STATE, spa, RW_READER); 3137 3138 tvd = spa->spa_root_vdev->vdev_child[top]; 3139 new_ms_count = tvd->vdev_ms_count; 3140 new_class_space = metaslab_class_get_space(mc); 3141 3142 if (tvd->vdev_mg != mg || mg->mg_class != mc) { 3143 if (ztest_opts.zo_verbose >= 5) { 3144 (void) printf("Could not verify LUN expansion due to " 3145 "intervening vdev offline or remove.\n"); 3146 } 3147 spa_config_exit(spa, SCL_STATE, spa); 3148 VERIFY(mutex_unlock(&ztest_vdev_lock) == 0); 3149 return; 3150 } 3151 3152 /* 3153 * Make sure we were able to grow the vdev. 3154 */ 3155 if (new_ms_count <= old_ms_count) 3156 fatal(0, "LUN expansion failed: ms_count %llu <= %llu\n", 3157 old_ms_count, new_ms_count); 3158 3159 /* 3160 * Make sure we were able to grow the pool. 3161 */ 3162 if (new_class_space <= old_class_space) 3163 fatal(0, "LUN expansion failed: class_space %llu <= %llu\n", 3164 old_class_space, new_class_space); 3165 3166 if (ztest_opts.zo_verbose >= 5) { 3167 char oldnumbuf[6], newnumbuf[6]; 3168 3169 nicenum(old_class_space, oldnumbuf); 3170 nicenum(new_class_space, newnumbuf); 3171 (void) printf("%s grew from %s to %s\n", 3172 spa->spa_name, oldnumbuf, newnumbuf); 3173 } 3174 3175 spa_config_exit(spa, SCL_STATE, spa); 3176 VERIFY(mutex_unlock(&ztest_vdev_lock) == 0); 3177} 3178 3179/* 3180 * Verify that dmu_objset_{create,destroy,open,close} work as expected. 3181 */ 3182/* ARGSUSED */ 3183static void 3184ztest_objset_create_cb(objset_t *os, void *arg, cred_t *cr, dmu_tx_t *tx) 3185{ 3186 /* 3187 * Create the objects common to all ztest datasets. 3188 */ 3189 VERIFY(zap_create_claim(os, ZTEST_DIROBJ, 3190 DMU_OT_ZAP_OTHER, DMU_OT_NONE, 0, tx) == 0); 3191} 3192 3193static int 3194ztest_dataset_create(char *dsname) 3195{ 3196 uint64_t zilset = ztest_random(100); 3197 int err = dmu_objset_create(dsname, DMU_OST_OTHER, 0, 3198 ztest_objset_create_cb, NULL); 3199 3200 if (err || zilset < 80) 3201 return (err); 3202 3203 if (ztest_opts.zo_verbose >= 6) 3204 (void) printf("Setting dataset %s to sync always\n", dsname); 3205 return (ztest_dsl_prop_set_uint64(dsname, ZFS_PROP_SYNC, 3206 ZFS_SYNC_ALWAYS, B_FALSE)); 3207} 3208 3209/* ARGSUSED */ 3210static int 3211ztest_objset_destroy_cb(const char *name, void *arg) 3212{ 3213 objset_t *os; 3214 dmu_object_info_t doi; 3215 int error; 3216 3217 /* 3218 * Verify that the dataset contains a directory object. 3219 */ 3220 VERIFY0(dmu_objset_own(name, DMU_OST_OTHER, B_TRUE, FTAG, &os)); 3221 error = dmu_object_info(os, ZTEST_DIROBJ, &doi); 3222 if (error != ENOENT) { 3223 /* We could have crashed in the middle of destroying it */ 3224 ASSERT0(error); 3225 ASSERT3U(doi.doi_type, ==, DMU_OT_ZAP_OTHER); 3226 ASSERT3S(doi.doi_physical_blocks_512, >=, 0); 3227 } 3228 dmu_objset_disown(os, FTAG); 3229 3230 /* 3231 * Destroy the dataset. 3232 */ 3233 if (strchr(name, '@') != NULL) { 3234 VERIFY0(dsl_destroy_snapshot(name, B_FALSE)); 3235 } else { 3236 VERIFY0(dsl_destroy_head(name)); 3237 } 3238 return (0); 3239} 3240 3241static boolean_t 3242ztest_snapshot_create(char *osname, uint64_t id) 3243{ 3244 char snapname[MAXNAMELEN]; 3245 int error; 3246 3247 (void) snprintf(snapname, sizeof (snapname), "%llu", (u_longlong_t)id); 3248 3249 error = dmu_objset_snapshot_one(osname, snapname); 3250 if (error == ENOSPC) { 3251 ztest_record_enospc(FTAG); 3252 return (B_FALSE); 3253 } 3254 if (error != 0 && error != EEXIST) { 3255 fatal(0, "ztest_snapshot_create(%s@%s) = %d", osname, 3256 snapname, error); 3257 } 3258 return (B_TRUE); 3259} 3260 3261static boolean_t 3262ztest_snapshot_destroy(char *osname, uint64_t id) 3263{ 3264 char snapname[MAXNAMELEN]; 3265 int error; 3266 3267 (void) snprintf(snapname, MAXNAMELEN, "%s@%llu", osname, 3268 (u_longlong_t)id); 3269 3270 error = dsl_destroy_snapshot(snapname, B_FALSE); 3271 if (error != 0 && error != ENOENT) 3272 fatal(0, "ztest_snapshot_destroy(%s) = %d", snapname, error); 3273 return (B_TRUE); 3274} 3275 3276/* ARGSUSED */ 3277void 3278ztest_dmu_objset_create_destroy(ztest_ds_t *zd, uint64_t id) 3279{ 3280 ztest_ds_t zdtmp; 3281 int iters; 3282 int error; 3283 objset_t *os, *os2; 3284 char name[MAXNAMELEN]; 3285 zilog_t *zilog; 3286 3287 (void) rw_rdlock(&ztest_name_lock); 3288 3289 (void) snprintf(name, MAXNAMELEN, "%s/temp_%llu", 3290 ztest_opts.zo_pool, (u_longlong_t)id); 3291 3292 /* 3293 * If this dataset exists from a previous run, process its replay log 3294 * half of the time. If we don't replay it, then dmu_objset_destroy() 3295 * (invoked from ztest_objset_destroy_cb()) should just throw it away. 3296 */ 3297 if (ztest_random(2) == 0 && 3298 dmu_objset_own(name, DMU_OST_OTHER, B_FALSE, FTAG, &os) == 0) { 3299 ztest_zd_init(&zdtmp, NULL, os); 3300 zil_replay(os, &zdtmp, ztest_replay_vector); 3301 ztest_zd_fini(&zdtmp); 3302 dmu_objset_disown(os, FTAG); 3303 } 3304 3305 /* 3306 * There may be an old instance of the dataset we're about to 3307 * create lying around from a previous run. If so, destroy it 3308 * and all of its snapshots. 3309 */ 3310 (void) dmu_objset_find(name, ztest_objset_destroy_cb, NULL, 3311 DS_FIND_CHILDREN | DS_FIND_SNAPSHOTS); 3312 3313 /* 3314 * Verify that the destroyed dataset is no longer in the namespace. 3315 */ 3316 VERIFY3U(ENOENT, ==, dmu_objset_own(name, DMU_OST_OTHER, B_TRUE, 3317 FTAG, &os)); 3318 3319 /* 3320 * Verify that we can create a new dataset. 3321 */ 3322 error = ztest_dataset_create(name); 3323 if (error) { 3324 if (error == ENOSPC) { 3325 ztest_record_enospc(FTAG); 3326 (void) rw_unlock(&ztest_name_lock); 3327 return; 3328 } 3329 fatal(0, "dmu_objset_create(%s) = %d", name, error); 3330 } 3331 3332 VERIFY0(dmu_objset_own(name, DMU_OST_OTHER, B_FALSE, FTAG, &os)); 3333 3334 ztest_zd_init(&zdtmp, NULL, os); 3335 3336 /* 3337 * Open the intent log for it. 3338 */ 3339 zilog = zil_open(os, ztest_get_data); 3340 3341 /* 3342 * Put some objects in there, do a little I/O to them, 3343 * and randomly take a couple of snapshots along the way. 3344 */ 3345 iters = ztest_random(5); 3346 for (int i = 0; i < iters; i++) { 3347 ztest_dmu_object_alloc_free(&zdtmp, id); 3348 if (ztest_random(iters) == 0) 3349 (void) ztest_snapshot_create(name, i); 3350 } 3351 3352 /* 3353 * Verify that we cannot create an existing dataset. 3354 */ 3355 VERIFY3U(EEXIST, ==, 3356 dmu_objset_create(name, DMU_OST_OTHER, 0, NULL, NULL)); 3357 3358 /* 3359 * Verify that we can hold an objset that is also owned. 3360 */ 3361 VERIFY3U(0, ==, dmu_objset_hold(name, FTAG, &os2)); 3362 dmu_objset_rele(os2, FTAG); 3363 3364 /* 3365 * Verify that we cannot own an objset that is already owned. 3366 */ 3367 VERIFY3U(EBUSY, ==, 3368 dmu_objset_own(name, DMU_OST_OTHER, B_FALSE, FTAG, &os2)); 3369 3370 zil_close(zilog); 3371 dmu_objset_disown(os, FTAG); 3372 ztest_zd_fini(&zdtmp); 3373 3374 (void) rw_unlock(&ztest_name_lock); 3375} 3376 3377/* 3378 * Verify that dmu_snapshot_{create,destroy,open,close} work as expected. 3379 */ 3380void 3381ztest_dmu_snapshot_create_destroy(ztest_ds_t *zd, uint64_t id) 3382{ 3383 (void) rw_rdlock(&ztest_name_lock); 3384 (void) ztest_snapshot_destroy(zd->zd_name, id); 3385 (void) ztest_snapshot_create(zd->zd_name, id); 3386 (void) rw_unlock(&ztest_name_lock); 3387} 3388 3389/* 3390 * Cleanup non-standard snapshots and clones. 3391 */ 3392void 3393ztest_dsl_dataset_cleanup(char *osname, uint64_t id) 3394{ 3395 char snap1name[MAXNAMELEN]; 3396 char clone1name[MAXNAMELEN]; 3397 char snap2name[MAXNAMELEN]; 3398 char clone2name[MAXNAMELEN]; 3399 char snap3name[MAXNAMELEN]; 3400 int error; 3401 3402 (void) snprintf(snap1name, MAXNAMELEN, "%s@s1_%llu", osname, id); 3403 (void) snprintf(clone1name, MAXNAMELEN, "%s/c1_%llu", osname, id); 3404 (void) snprintf(snap2name, MAXNAMELEN, "%s@s2_%llu", clone1name, id); 3405 (void) snprintf(clone2name, MAXNAMELEN, "%s/c2_%llu", osname, id); 3406 (void) snprintf(snap3name, MAXNAMELEN, "%s@s3_%llu", clone1name, id); 3407 3408 error = dsl_destroy_head(clone2name); 3409 if (error && error != ENOENT) 3410 fatal(0, "dsl_destroy_head(%s) = %d", clone2name, error); 3411 error = dsl_destroy_snapshot(snap3name, B_FALSE); 3412 if (error && error != ENOENT) 3413 fatal(0, "dsl_destroy_snapshot(%s) = %d", snap3name, error); 3414 error = dsl_destroy_snapshot(snap2name, B_FALSE); 3415 if (error && error != ENOENT) 3416 fatal(0, "dsl_destroy_snapshot(%s) = %d", snap2name, error); 3417 error = dsl_destroy_head(clone1name); 3418 if (error && error != ENOENT) 3419 fatal(0, "dsl_destroy_head(%s) = %d", clone1name, error); 3420 error = dsl_destroy_snapshot(snap1name, B_FALSE); 3421 if (error && error != ENOENT) 3422 fatal(0, "dsl_destroy_snapshot(%s) = %d", snap1name, error); 3423} 3424 3425/* 3426 * Verify dsl_dataset_promote handles EBUSY 3427 */ 3428void 3429ztest_dsl_dataset_promote_busy(ztest_ds_t *zd, uint64_t id) 3430{ 3431 objset_t *os; 3432 char snap1name[MAXNAMELEN]; 3433 char clone1name[MAXNAMELEN]; 3434 char snap2name[MAXNAMELEN]; 3435 char clone2name[MAXNAMELEN]; 3436 char snap3name[MAXNAMELEN]; 3437 char *osname = zd->zd_name; 3438 int error; 3439 3440 (void) rw_rdlock(&ztest_name_lock); 3441 3442 ztest_dsl_dataset_cleanup(osname, id); 3443 3444 (void) snprintf(snap1name, MAXNAMELEN, "%s@s1_%llu", osname, id); 3445 (void) snprintf(clone1name, MAXNAMELEN, "%s/c1_%llu", osname, id); 3446 (void) snprintf(snap2name, MAXNAMELEN, "%s@s2_%llu", clone1name, id); 3447 (void) snprintf(clone2name, MAXNAMELEN, "%s/c2_%llu", osname, id); 3448 (void) snprintf(snap3name, MAXNAMELEN, "%s@s3_%llu", clone1name, id); 3449 3450 error = dmu_objset_snapshot_one(osname, strchr(snap1name, '@') + 1); 3451 if (error && error != EEXIST) { 3452 if (error == ENOSPC) { 3453 ztest_record_enospc(FTAG); 3454 goto out; 3455 } 3456 fatal(0, "dmu_take_snapshot(%s) = %d", snap1name, error); 3457 } 3458 3459 error = dmu_objset_clone(clone1name, snap1name); 3460 if (error) { 3461 if (error == ENOSPC) { 3462 ztest_record_enospc(FTAG); 3463 goto out; 3464 } 3465 fatal(0, "dmu_objset_create(%s) = %d", clone1name, error); 3466 } 3467 3468 error = dmu_objset_snapshot_one(clone1name, strchr(snap2name, '@') + 1); 3469 if (error && error != EEXIST) { 3470 if (error == ENOSPC) { 3471 ztest_record_enospc(FTAG); 3472 goto out; 3473 } 3474 fatal(0, "dmu_open_snapshot(%s) = %d", snap2name, error); 3475 } 3476 3477 error = dmu_objset_snapshot_one(clone1name, strchr(snap3name, '@') + 1); 3478 if (error && error != EEXIST) { 3479 if (error == ENOSPC) { 3480 ztest_record_enospc(FTAG); 3481 goto out; 3482 } 3483 fatal(0, "dmu_open_snapshot(%s) = %d", snap3name, error); 3484 } 3485 3486 error = dmu_objset_clone(clone2name, snap3name); 3487 if (error) { 3488 if (error == ENOSPC) { 3489 ztest_record_enospc(FTAG); 3490 goto out; 3491 } 3492 fatal(0, "dmu_objset_create(%s) = %d", clone2name, error); 3493 } 3494 3495 error = dmu_objset_own(snap2name, DMU_OST_ANY, B_TRUE, FTAG, &os); 3496 if (error) 3497 fatal(0, "dmu_objset_own(%s) = %d", snap2name, error); 3498 error = dsl_dataset_promote(clone2name, NULL); 3499 if (error == ENOSPC) { 3500 dmu_objset_disown(os, FTAG); 3501 ztest_record_enospc(FTAG); 3502 goto out; 3503 } 3504 if (error != EBUSY) 3505 fatal(0, "dsl_dataset_promote(%s), %d, not EBUSY", clone2name, 3506 error); 3507 dmu_objset_disown(os, FTAG); 3508 3509out: 3510 ztest_dsl_dataset_cleanup(osname, id); 3511 3512 (void) rw_unlock(&ztest_name_lock); 3513} 3514 3515/* 3516 * Verify that dmu_object_{alloc,free} work as expected. 3517 */ 3518void 3519ztest_dmu_object_alloc_free(ztest_ds_t *zd, uint64_t id) 3520{ 3521 ztest_od_t od[4]; 3522 int batchsize = sizeof (od) / sizeof (od[0]); 3523 3524 for (int b = 0; b < batchsize; b++) 3525 ztest_od_init(&od[b], id, FTAG, b, DMU_OT_UINT64_OTHER, 0, 0); 3526 3527 /* 3528 * Destroy the previous batch of objects, create a new batch, 3529 * and do some I/O on the new objects. 3530 */ 3531 if (ztest_object_init(zd, od, sizeof (od), B_TRUE) != 0) 3532 return; 3533 3534 while (ztest_random(4 * batchsize) != 0) 3535 ztest_io(zd, od[ztest_random(batchsize)].od_object, 3536 ztest_random(ZTEST_RANGE_LOCKS) << SPA_MAXBLOCKSHIFT); 3537} 3538 3539/* 3540 * Verify that dmu_{read,write} work as expected. 3541 */ 3542void 3543ztest_dmu_read_write(ztest_ds_t *zd, uint64_t id) 3544{ 3545 objset_t *os = zd->zd_os; 3546 ztest_od_t od[2]; 3547 dmu_tx_t *tx; 3548 int i, freeit, error; 3549 uint64_t n, s, txg; 3550 bufwad_t *packbuf, *bigbuf, *pack, *bigH, *bigT; 3551 uint64_t packobj, packoff, packsize, bigobj, bigoff, bigsize; 3552 uint64_t chunksize = (1000 + ztest_random(1000)) * sizeof (uint64_t); 3553 uint64_t regions = 997; 3554 uint64_t stride = 123456789ULL; 3555 uint64_t width = 40; 3556 int free_percent = 5; 3557 3558 /* 3559 * This test uses two objects, packobj and bigobj, that are always 3560 * updated together (i.e. in the same tx) so that their contents are 3561 * in sync and can be compared. Their contents relate to each other 3562 * in a simple way: packobj is a dense array of 'bufwad' structures, 3563 * while bigobj is a sparse array of the same bufwads. Specifically, 3564 * for any index n, there are three bufwads that should be identical: 3565 * 3566 * packobj, at offset n * sizeof (bufwad_t) 3567 * bigobj, at the head of the nth chunk 3568 * bigobj, at the tail of the nth chunk 3569 * 3570 * The chunk size is arbitrary. It doesn't have to be a power of two, 3571 * and it doesn't have any relation to the object blocksize. 3572 * The only requirement is that it can hold at least two bufwads. 3573 * 3574 * Normally, we write the bufwad to each of these locations. 3575 * However, free_percent of the time we instead write zeroes to 3576 * packobj and perform a dmu_free_range() on bigobj. By comparing 3577 * bigobj to packobj, we can verify that the DMU is correctly 3578 * tracking which parts of an object are allocated and free, 3579 * and that the contents of the allocated blocks are correct. 3580 */ 3581 3582 /* 3583 * Read the directory info. If it's the first time, set things up. 3584 */ 3585 ztest_od_init(&od[0], id, FTAG, 0, DMU_OT_UINT64_OTHER, 0, chunksize); 3586 ztest_od_init(&od[1], id, FTAG, 1, DMU_OT_UINT64_OTHER, 0, chunksize); 3587 3588 if (ztest_object_init(zd, od, sizeof (od), B_FALSE) != 0) 3589 return; 3590 3591 bigobj = od[0].od_object; 3592 packobj = od[1].od_object; 3593 chunksize = od[0].od_gen; 3594 ASSERT(chunksize == od[1].od_gen); 3595 3596 /* 3597 * Prefetch a random chunk of the big object. 3598 * Our aim here is to get some async reads in flight 3599 * for blocks that we may free below; the DMU should 3600 * handle this race correctly. 3601 */ 3602 n = ztest_random(regions) * stride + ztest_random(width); 3603 s = 1 + ztest_random(2 * width - 1); 3604 dmu_prefetch(os, bigobj, n * chunksize, s * chunksize); 3605 3606 /* 3607 * Pick a random index and compute the offsets into packobj and bigobj. 3608 */ 3609 n = ztest_random(regions) * stride + ztest_random(width); 3610 s = 1 + ztest_random(width - 1); 3611 3612 packoff = n * sizeof (bufwad_t); 3613 packsize = s * sizeof (bufwad_t); 3614 3615 bigoff = n * chunksize; 3616 bigsize = s * chunksize; 3617 3618 packbuf = umem_alloc(packsize, UMEM_NOFAIL); 3619 bigbuf = umem_alloc(bigsize, UMEM_NOFAIL); 3620 3621 /* 3622 * free_percent of the time, free a range of bigobj rather than 3623 * overwriting it. 3624 */ 3625 freeit = (ztest_random(100) < free_percent); 3626 3627 /* 3628 * Read the current contents of our objects. 3629 */ 3630 error = dmu_read(os, packobj, packoff, packsize, packbuf, 3631 DMU_READ_PREFETCH); 3632 ASSERT0(error); 3633 error = dmu_read(os, bigobj, bigoff, bigsize, bigbuf, 3634 DMU_READ_PREFETCH); 3635 ASSERT0(error); 3636 3637 /* 3638 * Get a tx for the mods to both packobj and bigobj. 3639 */ 3640 tx = dmu_tx_create(os); 3641 3642 dmu_tx_hold_write(tx, packobj, packoff, packsize); 3643 3644 if (freeit) 3645 dmu_tx_hold_free(tx, bigobj, bigoff, bigsize); 3646 else 3647 dmu_tx_hold_write(tx, bigobj, bigoff, bigsize); 3648 3649 /* This accounts for setting the checksum/compression. */ 3650 dmu_tx_hold_bonus(tx, bigobj); 3651 3652 txg = ztest_tx_assign(tx, TXG_MIGHTWAIT, FTAG); 3653 if (txg == 0) { 3654 umem_free(packbuf, packsize); 3655 umem_free(bigbuf, bigsize); 3656 return; 3657 } 3658 3659 enum zio_checksum cksum; 3660 do { 3661 cksum = (enum zio_checksum) 3662 ztest_random_dsl_prop(ZFS_PROP_CHECKSUM); 3663 } while (cksum >= ZIO_CHECKSUM_LEGACY_FUNCTIONS); 3664 dmu_object_set_checksum(os, bigobj, cksum, tx); 3665 3666 enum zio_compress comp; 3667 do { 3668 comp = (enum zio_compress) 3669 ztest_random_dsl_prop(ZFS_PROP_COMPRESSION); 3670 } while (comp >= ZIO_COMPRESS_LEGACY_FUNCTIONS); 3671 dmu_object_set_compress(os, bigobj, comp, tx); 3672 3673 /* 3674 * For each index from n to n + s, verify that the existing bufwad 3675 * in packobj matches the bufwads at the head and tail of the 3676 * corresponding chunk in bigobj. Then update all three bufwads 3677 * with the new values we want to write out. 3678 */ 3679 for (i = 0; i < s; i++) { 3680 /* LINTED */ 3681 pack = (bufwad_t *)((char *)packbuf + i * sizeof (bufwad_t)); 3682 /* LINTED */ 3683 bigH = (bufwad_t *)((char *)bigbuf + i * chunksize); 3684 /* LINTED */ 3685 bigT = (bufwad_t *)((char *)bigH + chunksize) - 1; 3686 3687 ASSERT((uintptr_t)bigH - (uintptr_t)bigbuf < bigsize); 3688 ASSERT((uintptr_t)bigT - (uintptr_t)bigbuf < bigsize); 3689 3690 if (pack->bw_txg > txg) 3691 fatal(0, "future leak: got %llx, open txg is %llx", 3692 pack->bw_txg, txg); 3693 3694 if (pack->bw_data != 0 && pack->bw_index != n + i) 3695 fatal(0, "wrong index: got %llx, wanted %llx+%llx", 3696 pack->bw_index, n, i); 3697 3698 if (bcmp(pack, bigH, sizeof (bufwad_t)) != 0) 3699 fatal(0, "pack/bigH mismatch in %p/%p", pack, bigH); 3700 3701 if (bcmp(pack, bigT, sizeof (bufwad_t)) != 0) 3702 fatal(0, "pack/bigT mismatch in %p/%p", pack, bigT); 3703 3704 if (freeit) { 3705 bzero(pack, sizeof (bufwad_t)); 3706 } else { 3707 pack->bw_index = n + i; 3708 pack->bw_txg = txg; 3709 pack->bw_data = 1 + ztest_random(-2ULL); 3710 } 3711 *bigH = *pack; 3712 *bigT = *pack; 3713 } 3714 3715 /* 3716 * We've verified all the old bufwads, and made new ones. 3717 * Now write them out. 3718 */ 3719 dmu_write(os, packobj, packoff, packsize, packbuf, tx); 3720 3721 if (freeit) { 3722 if (ztest_opts.zo_verbose >= 7) { 3723 (void) printf("freeing offset %llx size %llx" 3724 " txg %llx\n", 3725 (u_longlong_t)bigoff, 3726 (u_longlong_t)bigsize, 3727 (u_longlong_t)txg); 3728 } 3729 VERIFY(0 == dmu_free_range(os, bigobj, bigoff, bigsize, tx)); 3730 } else { 3731 if (ztest_opts.zo_verbose >= 7) { 3732 (void) printf("writing 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 dmu_write(os, bigobj, bigoff, bigsize, bigbuf, tx); 3739 } 3740 3741 dmu_tx_commit(tx); 3742 3743 /* 3744 * Sanity check the stuff we just wrote. 3745 */ 3746 { 3747 void *packcheck = umem_alloc(packsize, UMEM_NOFAIL); 3748 void *bigcheck = umem_alloc(bigsize, UMEM_NOFAIL); 3749 3750 VERIFY(0 == dmu_read(os, packobj, packoff, 3751 packsize, packcheck, DMU_READ_PREFETCH)); 3752 VERIFY(0 == dmu_read(os, bigobj, bigoff, 3753 bigsize, bigcheck, DMU_READ_PREFETCH)); 3754 3755 ASSERT(bcmp(packbuf, packcheck, packsize) == 0); 3756 ASSERT(bcmp(bigbuf, bigcheck, bigsize) == 0); 3757 3758 umem_free(packcheck, packsize); 3759 umem_free(bigcheck, bigsize); 3760 } 3761 3762 umem_free(packbuf, packsize); 3763 umem_free(bigbuf, bigsize); 3764} 3765 3766void 3767compare_and_update_pbbufs(uint64_t s, bufwad_t *packbuf, bufwad_t *bigbuf, 3768 uint64_t bigsize, uint64_t n, uint64_t chunksize, uint64_t txg) 3769{ 3770 uint64_t i; 3771 bufwad_t *pack; 3772 bufwad_t *bigH; 3773 bufwad_t *bigT; 3774 3775 /* 3776 * For each index from n to n + s, verify that the existing bufwad 3777 * in packobj matches the bufwads at the head and tail of the 3778 * corresponding chunk in bigobj. Then update all three bufwads 3779 * with the new values we want to write out. 3780 */ 3781 for (i = 0; i < s; i++) { 3782 /* LINTED */ 3783 pack = (bufwad_t *)((char *)packbuf + i * sizeof (bufwad_t)); 3784 /* LINTED */ 3785 bigH = (bufwad_t *)((char *)bigbuf + i * chunksize); 3786 /* LINTED */ 3787 bigT = (bufwad_t *)((char *)bigH + chunksize) - 1; 3788 3789 ASSERT((uintptr_t)bigH - (uintptr_t)bigbuf < bigsize); 3790 ASSERT((uintptr_t)bigT - (uintptr_t)bigbuf < bigsize); 3791 3792 if (pack->bw_txg > txg) 3793 fatal(0, "future leak: got %llx, open txg is %llx", 3794 pack->bw_txg, txg); 3795 3796 if (pack->bw_data != 0 && pack->bw_index != n + i) 3797 fatal(0, "wrong index: got %llx, wanted %llx+%llx", 3798 pack->bw_index, n, i); 3799 3800 if (bcmp(pack, bigH, sizeof (bufwad_t)) != 0) 3801 fatal(0, "pack/bigH mismatch in %p/%p", pack, bigH); 3802 3803 if (bcmp(pack, bigT, sizeof (bufwad_t)) != 0) 3804 fatal(0, "pack/bigT mismatch in %p/%p", pack, bigT); 3805 3806 pack->bw_index = n + i; 3807 pack->bw_txg = txg; 3808 pack->bw_data = 1 + ztest_random(-2ULL); 3809 3810 *bigH = *pack; 3811 *bigT = *pack; 3812 } 3813} 3814 3815void 3816ztest_dmu_read_write_zcopy(ztest_ds_t *zd, uint64_t id) 3817{ 3818 objset_t *os = zd->zd_os; 3819 ztest_od_t od[2]; 3820 dmu_tx_t *tx; 3821 uint64_t i; 3822 int error; 3823 uint64_t n, s, txg; 3824 bufwad_t *packbuf, *bigbuf; 3825 uint64_t packobj, packoff, packsize, bigobj, bigoff, bigsize; 3826 uint64_t blocksize = ztest_random_blocksize(); 3827 uint64_t chunksize = blocksize; 3828 uint64_t regions = 997; 3829 uint64_t stride = 123456789ULL; 3830 uint64_t width = 9; 3831 dmu_buf_t *bonus_db; 3832 arc_buf_t **bigbuf_arcbufs; 3833 dmu_object_info_t doi; 3834 3835 /* 3836 * This test uses two objects, packobj and bigobj, that are always 3837 * updated together (i.e. in the same tx) so that their contents are 3838 * in sync and can be compared. Their contents relate to each other 3839 * in a simple way: packobj is a dense array of 'bufwad' structures, 3840 * while bigobj is a sparse array of the same bufwads. Specifically, 3841 * for any index n, there are three bufwads that should be identical: 3842 * 3843 * packobj, at offset n * sizeof (bufwad_t) 3844 * bigobj, at the head of the nth chunk 3845 * bigobj, at the tail of the nth chunk 3846 * 3847 * The chunk size is set equal to bigobj block size so that 3848 * dmu_assign_arcbuf() can be tested for object updates. 3849 */ 3850 3851 /* 3852 * Read the directory info. If it's the first time, set things up. 3853 */ 3854 ztest_od_init(&od[0], id, FTAG, 0, DMU_OT_UINT64_OTHER, blocksize, 0); 3855 ztest_od_init(&od[1], id, FTAG, 1, DMU_OT_UINT64_OTHER, 0, chunksize); 3856 3857 if (ztest_object_init(zd, od, sizeof (od), B_FALSE) != 0) 3858 return; 3859 3860 bigobj = od[0].od_object; 3861 packobj = od[1].od_object; 3862 blocksize = od[0].od_blocksize; 3863 chunksize = blocksize; 3864 ASSERT(chunksize == od[1].od_gen); 3865 3866 VERIFY(dmu_object_info(os, bigobj, &doi) == 0); 3867 VERIFY(ISP2(doi.doi_data_block_size)); 3868 VERIFY(chunksize == doi.doi_data_block_size); 3869 VERIFY(chunksize >= 2 * sizeof (bufwad_t)); 3870 3871 /* 3872 * Pick a random index and compute the offsets into packobj and bigobj. 3873 */ 3874 n = ztest_random(regions) * stride + ztest_random(width); 3875 s = 1 + ztest_random(width - 1); 3876 3877 packoff = n * sizeof (bufwad_t); 3878 packsize = s * sizeof (bufwad_t); 3879 3880 bigoff = n * chunksize; 3881 bigsize = s * chunksize; 3882 3883 packbuf = umem_zalloc(packsize, UMEM_NOFAIL); 3884 bigbuf = umem_zalloc(bigsize, UMEM_NOFAIL); 3885 3886 VERIFY3U(0, ==, dmu_bonus_hold(os, bigobj, FTAG, &bonus_db)); 3887 3888 bigbuf_arcbufs = umem_zalloc(2 * s * sizeof (arc_buf_t *), UMEM_NOFAIL); 3889 3890 /* 3891 * Iteration 0 test zcopy for DB_UNCACHED dbufs. 3892 * Iteration 1 test zcopy to already referenced dbufs. 3893 * Iteration 2 test zcopy to dirty dbuf in the same txg. 3894 * Iteration 3 test zcopy to dbuf dirty in previous txg. 3895 * Iteration 4 test zcopy when dbuf is no longer dirty. 3896 * Iteration 5 test zcopy when it can't be done. 3897 * Iteration 6 one more zcopy write. 3898 */ 3899 for (i = 0; i < 7; i++) { 3900 uint64_t j; 3901 uint64_t off; 3902 3903 /* 3904 * In iteration 5 (i == 5) use arcbufs 3905 * that don't match bigobj blksz to test 3906 * dmu_assign_arcbuf() when it can't directly 3907 * assign an arcbuf to a dbuf. 3908 */ 3909 for (j = 0; j < s; j++) { 3910 if (i != 5) { 3911 bigbuf_arcbufs[j] = 3912 dmu_request_arcbuf(bonus_db, chunksize); 3913 } else { 3914 bigbuf_arcbufs[2 * j] = 3915 dmu_request_arcbuf(bonus_db, chunksize / 2); 3916 bigbuf_arcbufs[2 * j + 1] = 3917 dmu_request_arcbuf(bonus_db, chunksize / 2); 3918 } 3919 } 3920 3921 /* 3922 * Get a tx for the mods to both packobj and bigobj. 3923 */ 3924 tx = dmu_tx_create(os); 3925 3926 dmu_tx_hold_write(tx, packobj, packoff, packsize); 3927 dmu_tx_hold_write(tx, bigobj, bigoff, bigsize); 3928 3929 txg = ztest_tx_assign(tx, TXG_MIGHTWAIT, FTAG); 3930 if (txg == 0) { 3931 umem_free(packbuf, packsize); 3932 umem_free(bigbuf, bigsize); 3933 for (j = 0; j < s; j++) { 3934 if (i != 5) { 3935 dmu_return_arcbuf(bigbuf_arcbufs[j]); 3936 } else { 3937 dmu_return_arcbuf( 3938 bigbuf_arcbufs[2 * j]); 3939 dmu_return_arcbuf( 3940 bigbuf_arcbufs[2 * j + 1]); 3941 } 3942 } 3943 umem_free(bigbuf_arcbufs, 2 * s * sizeof (arc_buf_t *)); 3944 dmu_buf_rele(bonus_db, FTAG); 3945 return; 3946 } 3947 3948 /* 3949 * 50% of the time don't read objects in the 1st iteration to 3950 * test dmu_assign_arcbuf() for the case when there're no 3951 * existing dbufs for the specified offsets. 3952 */ 3953 if (i != 0 || ztest_random(2) != 0) { 3954 error = dmu_read(os, packobj, packoff, 3955 packsize, packbuf, DMU_READ_PREFETCH); 3956 ASSERT0(error); 3957 error = dmu_read(os, bigobj, bigoff, bigsize, 3958 bigbuf, DMU_READ_PREFETCH); 3959 ASSERT0(error); 3960 } 3961 compare_and_update_pbbufs(s, packbuf, bigbuf, bigsize, 3962 n, chunksize, txg); 3963 3964 /* 3965 * We've verified all the old bufwads, and made new ones. 3966 * Now write them out. 3967 */ 3968 dmu_write(os, packobj, packoff, packsize, packbuf, tx); 3969 if (ztest_opts.zo_verbose >= 7) { 3970 (void) printf("writing offset %llx size %llx" 3971 " txg %llx\n", 3972 (u_longlong_t)bigoff, 3973 (u_longlong_t)bigsize, 3974 (u_longlong_t)txg); 3975 } 3976 for (off = bigoff, j = 0; j < s; j++, off += chunksize) { 3977 dmu_buf_t *dbt; 3978 if (i != 5) { 3979 bcopy((caddr_t)bigbuf + (off - bigoff), 3980 bigbuf_arcbufs[j]->b_data, chunksize); 3981 } else { 3982 bcopy((caddr_t)bigbuf + (off - bigoff), 3983 bigbuf_arcbufs[2 * j]->b_data, 3984 chunksize / 2); 3985 bcopy((caddr_t)bigbuf + (off - bigoff) + 3986 chunksize / 2, 3987 bigbuf_arcbufs[2 * j + 1]->b_data, 3988 chunksize / 2); 3989 } 3990 3991 if (i == 1) { 3992 VERIFY(dmu_buf_hold(os, bigobj, off, 3993 FTAG, &dbt, DMU_READ_NO_PREFETCH) == 0); 3994 } 3995 if (i != 5) { 3996 dmu_assign_arcbuf(bonus_db, off, 3997 bigbuf_arcbufs[j], tx); 3998 } else { 3999 dmu_assign_arcbuf(bonus_db, off, 4000 bigbuf_arcbufs[2 * j], tx); 4001 dmu_assign_arcbuf(bonus_db, 4002 off + chunksize / 2, 4003 bigbuf_arcbufs[2 * j + 1], tx); 4004 } 4005 if (i == 1) { 4006 dmu_buf_rele(dbt, FTAG); 4007 } 4008 } 4009 dmu_tx_commit(tx); 4010 4011 /* 4012 * Sanity check the stuff we just wrote. 4013 */ 4014 { 4015 void *packcheck = umem_alloc(packsize, UMEM_NOFAIL); 4016 void *bigcheck = umem_alloc(bigsize, UMEM_NOFAIL); 4017 4018 VERIFY(0 == dmu_read(os, packobj, packoff, 4019 packsize, packcheck, DMU_READ_PREFETCH)); 4020 VERIFY(0 == dmu_read(os, bigobj, bigoff, 4021 bigsize, bigcheck, DMU_READ_PREFETCH)); 4022 4023 ASSERT(bcmp(packbuf, packcheck, packsize) == 0); 4024 ASSERT(bcmp(bigbuf, bigcheck, bigsize) == 0); 4025 4026 umem_free(packcheck, packsize); 4027 umem_free(bigcheck, bigsize); 4028 } 4029 if (i == 2) { 4030 txg_wait_open(dmu_objset_pool(os), 0); 4031 } else if (i == 3) { 4032 txg_wait_synced(dmu_objset_pool(os), 0); 4033 } 4034 } 4035 4036 dmu_buf_rele(bonus_db, FTAG); 4037 umem_free(packbuf, packsize); 4038 umem_free(bigbuf, bigsize); 4039 umem_free(bigbuf_arcbufs, 2 * s * sizeof (arc_buf_t *)); 4040} 4041 4042/* ARGSUSED */ 4043void 4044ztest_dmu_write_parallel(ztest_ds_t *zd, uint64_t id) 4045{ 4046 ztest_od_t od[1]; 4047 uint64_t offset = (1ULL << (ztest_random(20) + 43)) + 4048 (ztest_random(ZTEST_RANGE_LOCKS) << SPA_MAXBLOCKSHIFT); 4049 4050 /* 4051 * Have multiple threads write to large offsets in an object 4052 * to verify that parallel writes to an object -- even to the 4053 * same blocks within the object -- doesn't cause any trouble. 4054 */ 4055 ztest_od_init(&od[0], ID_PARALLEL, FTAG, 0, DMU_OT_UINT64_OTHER, 0, 0); 4056 4057 if (ztest_object_init(zd, od, sizeof (od), B_FALSE) != 0) 4058 return; 4059 4060 while (ztest_random(10) != 0) 4061 ztest_io(zd, od[0].od_object, offset); 4062} 4063 4064void 4065ztest_dmu_prealloc(ztest_ds_t *zd, uint64_t id) 4066{ 4067 ztest_od_t od[1]; 4068 uint64_t offset = (1ULL << (ztest_random(4) + SPA_MAXBLOCKSHIFT)) + 4069 (ztest_random(ZTEST_RANGE_LOCKS) << SPA_MAXBLOCKSHIFT); 4070 uint64_t count = ztest_random(20) + 1; 4071 uint64_t blocksize = ztest_random_blocksize(); 4072 void *data; 4073 4074 ztest_od_init(&od[0], id, FTAG, 0, DMU_OT_UINT64_OTHER, blocksize, 0); 4075 4076 if (ztest_object_init(zd, od, sizeof (od), !ztest_random(2)) != 0) 4077 return; 4078 4079 if (ztest_truncate(zd, od[0].od_object, offset, count * blocksize) != 0) 4080 return; 4081 4082 ztest_prealloc(zd, od[0].od_object, offset, count * blocksize); 4083 4084 data = umem_zalloc(blocksize, UMEM_NOFAIL); 4085 4086 while (ztest_random(count) != 0) { 4087 uint64_t randoff = offset + (ztest_random(count) * blocksize); 4088 if (ztest_write(zd, od[0].od_object, randoff, blocksize, 4089 data) != 0) 4090 break; 4091 while (ztest_random(4) != 0) 4092 ztest_io(zd, od[0].od_object, randoff); 4093 } 4094 4095 umem_free(data, blocksize); 4096} 4097 4098/* 4099 * Verify that zap_{create,destroy,add,remove,update} work as expected. 4100 */ 4101#define ZTEST_ZAP_MIN_INTS 1 4102#define ZTEST_ZAP_MAX_INTS 4 4103#define ZTEST_ZAP_MAX_PROPS 1000 4104 4105void 4106ztest_zap(ztest_ds_t *zd, uint64_t id) 4107{ 4108 objset_t *os = zd->zd_os; 4109 ztest_od_t od[1]; 4110 uint64_t object; 4111 uint64_t txg, last_txg; 4112 uint64_t value[ZTEST_ZAP_MAX_INTS]; 4113 uint64_t zl_ints, zl_intsize, prop; 4114 int i, ints; 4115 dmu_tx_t *tx; 4116 char propname[100], txgname[100]; 4117 int error; 4118 char *hc[2] = { "s.acl.h", ".s.open.h.hyLZlg" }; 4119 4120 ztest_od_init(&od[0], id, FTAG, 0, DMU_OT_ZAP_OTHER, 0, 0); 4121 4122 if (ztest_object_init(zd, od, sizeof (od), !ztest_random(2)) != 0) 4123 return; 4124 4125 object = od[0].od_object; 4126 4127 /* 4128 * Generate a known hash collision, and verify that 4129 * we can lookup and remove both entries. 4130 */ 4131 tx = dmu_tx_create(os); 4132 dmu_tx_hold_zap(tx, object, B_TRUE, NULL); 4133 txg = ztest_tx_assign(tx, TXG_MIGHTWAIT, FTAG); 4134 if (txg == 0) 4135 return; 4136 for (i = 0; i < 2; i++) { 4137 value[i] = i; 4138 VERIFY3U(0, ==, zap_add(os, object, hc[i], sizeof (uint64_t), 4139 1, &value[i], tx)); 4140 } 4141 for (i = 0; i < 2; i++) { 4142 VERIFY3U(EEXIST, ==, zap_add(os, object, hc[i], 4143 sizeof (uint64_t), 1, &value[i], tx)); 4144 VERIFY3U(0, ==, 4145 zap_length(os, object, hc[i], &zl_intsize, &zl_ints)); 4146 ASSERT3U(zl_intsize, ==, sizeof (uint64_t)); 4147 ASSERT3U(zl_ints, ==, 1); 4148 } 4149 for (i = 0; i < 2; i++) { 4150 VERIFY3U(0, ==, zap_remove(os, object, hc[i], tx)); 4151 } 4152 dmu_tx_commit(tx); 4153 4154 /* 4155 * Generate a buch of random entries. 4156 */ 4157 ints = MAX(ZTEST_ZAP_MIN_INTS, object % ZTEST_ZAP_MAX_INTS); 4158 4159 prop = ztest_random(ZTEST_ZAP_MAX_PROPS); 4160 (void) sprintf(propname, "prop_%llu", (u_longlong_t)prop); 4161 (void) sprintf(txgname, "txg_%llu", (u_longlong_t)prop); 4162 bzero(value, sizeof (value)); 4163 last_txg = 0; 4164 4165 /* 4166 * If these zap entries already exist, validate their contents. 4167 */ 4168 error = zap_length(os, object, txgname, &zl_intsize, &zl_ints); 4169 if (error == 0) { 4170 ASSERT3U(zl_intsize, ==, sizeof (uint64_t)); 4171 ASSERT3U(zl_ints, ==, 1); 4172 4173 VERIFY(zap_lookup(os, object, txgname, zl_intsize, 4174 zl_ints, &last_txg) == 0); 4175 4176 VERIFY(zap_length(os, object, propname, &zl_intsize, 4177 &zl_ints) == 0); 4178 4179 ASSERT3U(zl_intsize, ==, sizeof (uint64_t)); 4180 ASSERT3U(zl_ints, ==, ints); 4181 4182 VERIFY(zap_lookup(os, object, propname, zl_intsize, 4183 zl_ints, value) == 0); 4184 4185 for (i = 0; i < ints; i++) { 4186 ASSERT3U(value[i], ==, last_txg + object + i); 4187 } 4188 } else { 4189 ASSERT3U(error, ==, ENOENT); 4190 } 4191 4192 /* 4193 * Atomically update two entries in our zap object. 4194 * The first is named txg_%llu, and contains the txg 4195 * in which the property was last updated. The second 4196 * is named prop_%llu, and the nth element of its value 4197 * should be txg + object + n. 4198 */ 4199 tx = dmu_tx_create(os); 4200 dmu_tx_hold_zap(tx, object, B_TRUE, NULL); 4201 txg = ztest_tx_assign(tx, TXG_MIGHTWAIT, FTAG); 4202 if (txg == 0) 4203 return; 4204 4205 if (last_txg > txg) 4206 fatal(0, "zap future leak: old %llu new %llu", last_txg, txg); 4207 4208 for (i = 0; i < ints; i++) 4209 value[i] = txg + object + i; 4210 4211 VERIFY3U(0, ==, zap_update(os, object, txgname, sizeof (uint64_t), 4212 1, &txg, tx)); 4213 VERIFY3U(0, ==, zap_update(os, object, propname, sizeof (uint64_t), 4214 ints, value, tx)); 4215 4216 dmu_tx_commit(tx); 4217 4218 /* 4219 * Remove a random pair of entries. 4220 */ 4221 prop = ztest_random(ZTEST_ZAP_MAX_PROPS); 4222 (void) sprintf(propname, "prop_%llu", (u_longlong_t)prop); 4223 (void) sprintf(txgname, "txg_%llu", (u_longlong_t)prop); 4224 4225 error = zap_length(os, object, txgname, &zl_intsize, &zl_ints); 4226 4227 if (error == ENOENT) 4228 return; 4229 4230 ASSERT0(error); 4231 4232 tx = dmu_tx_create(os); 4233 dmu_tx_hold_zap(tx, object, B_TRUE, NULL); 4234 txg = ztest_tx_assign(tx, TXG_MIGHTWAIT, FTAG); 4235 if (txg == 0) 4236 return; 4237 VERIFY3U(0, ==, zap_remove(os, object, txgname, tx)); 4238 VERIFY3U(0, ==, zap_remove(os, object, propname, tx)); 4239 dmu_tx_commit(tx); 4240} 4241 4242/* 4243 * Testcase to test the upgrading of a microzap to fatzap. 4244 */ 4245void 4246ztest_fzap(ztest_ds_t *zd, uint64_t id) 4247{ 4248 objset_t *os = zd->zd_os; 4249 ztest_od_t od[1]; 4250 uint64_t object, txg; 4251 4252 ztest_od_init(&od[0], id, FTAG, 0, DMU_OT_ZAP_OTHER, 0, 0); 4253 4254 if (ztest_object_init(zd, od, sizeof (od), !ztest_random(2)) != 0) 4255 return; 4256 4257 object = od[0].od_object; 4258 4259 /* 4260 * Add entries to this ZAP and make sure it spills over 4261 * and gets upgraded to a fatzap. Also, since we are adding 4262 * 2050 entries we should see ptrtbl growth and leaf-block split. 4263 */ 4264 for (int i = 0; i < 2050; i++) { 4265 char name[MAXNAMELEN]; 4266 uint64_t value = i; 4267 dmu_tx_t *tx; 4268 int error; 4269 4270 (void) snprintf(name, sizeof (name), "fzap-%llu-%llu", 4271 id, value); 4272 4273 tx = dmu_tx_create(os); 4274 dmu_tx_hold_zap(tx, object, B_TRUE, name); 4275 txg = ztest_tx_assign(tx, TXG_MIGHTWAIT, FTAG); 4276 if (txg == 0) 4277 return; 4278 error = zap_add(os, object, name, sizeof (uint64_t), 1, 4279 &value, tx); 4280 ASSERT(error == 0 || error == EEXIST); 4281 dmu_tx_commit(tx); 4282 } 4283} 4284 4285/* ARGSUSED */ 4286void 4287ztest_zap_parallel(ztest_ds_t *zd, uint64_t id) 4288{ 4289 objset_t *os = zd->zd_os; 4290 ztest_od_t od[1]; 4291 uint64_t txg, object, count, wsize, wc, zl_wsize, zl_wc; 4292 dmu_tx_t *tx; 4293 int i, namelen, error; 4294 int micro = ztest_random(2); 4295 char name[20], string_value[20]; 4296 void *data; 4297 4298 ztest_od_init(&od[0], ID_PARALLEL, FTAG, micro, DMU_OT_ZAP_OTHER, 0, 0); 4299 4300 if (ztest_object_init(zd, od, sizeof (od), B_FALSE) != 0) 4301 return; 4302 4303 object = od[0].od_object; 4304 4305 /* 4306 * Generate a random name of the form 'xxx.....' where each 4307 * x is a random printable character and the dots are dots. 4308 * There are 94 such characters, and the name length goes from 4309 * 6 to 20, so there are 94^3 * 15 = 12,458,760 possible names. 4310 */ 4311 namelen = ztest_random(sizeof (name) - 5) + 5 + 1; 4312 4313 for (i = 0; i < 3; i++) 4314 name[i] = '!' + ztest_random('~' - '!' + 1); 4315 for (; i < namelen - 1; i++) 4316 name[i] = '.'; 4317 name[i] = '\0'; 4318 4319 if ((namelen & 1) || micro) { 4320 wsize = sizeof (txg); 4321 wc = 1; 4322 data = &txg; 4323 } else { 4324 wsize = 1; 4325 wc = namelen; 4326 data = string_value; 4327 } 4328 4329 count = -1ULL; 4330 VERIFY0(zap_count(os, object, &count)); 4331 ASSERT(count != -1ULL); 4332 4333 /* 4334 * Select an operation: length, lookup, add, update, remove. 4335 */ 4336 i = ztest_random(5); 4337 4338 if (i >= 2) { 4339 tx = dmu_tx_create(os); 4340 dmu_tx_hold_zap(tx, object, B_TRUE, NULL); 4341 txg = ztest_tx_assign(tx, TXG_MIGHTWAIT, FTAG); 4342 if (txg == 0) 4343 return; 4344 bcopy(name, string_value, namelen); 4345 } else { 4346 tx = NULL; 4347 txg = 0; 4348 bzero(string_value, namelen); 4349 } 4350 4351 switch (i) { 4352 4353 case 0: 4354 error = zap_length(os, object, name, &zl_wsize, &zl_wc); 4355 if (error == 0) { 4356 ASSERT3U(wsize, ==, zl_wsize); 4357 ASSERT3U(wc, ==, zl_wc); 4358 } else { 4359 ASSERT3U(error, ==, ENOENT); 4360 } 4361 break; 4362 4363 case 1: 4364 error = zap_lookup(os, object, name, wsize, wc, data); 4365 if (error == 0) { 4366 if (data == string_value && 4367 bcmp(name, data, namelen) != 0) 4368 fatal(0, "name '%s' != val '%s' len %d", 4369 name, data, namelen); 4370 } else { 4371 ASSERT3U(error, ==, ENOENT); 4372 } 4373 break; 4374 4375 case 2: 4376 error = zap_add(os, object, name, wsize, wc, data, tx); 4377 ASSERT(error == 0 || error == EEXIST); 4378 break; 4379 4380 case 3: 4381 VERIFY(zap_update(os, object, name, wsize, wc, data, tx) == 0); 4382 break; 4383 4384 case 4: 4385 error = zap_remove(os, object, name, tx); 4386 ASSERT(error == 0 || error == ENOENT); 4387 break; 4388 } 4389 4390 if (tx != NULL) 4391 dmu_tx_commit(tx); 4392} 4393 4394/* 4395 * Commit callback data. 4396 */ 4397typedef struct ztest_cb_data { 4398 list_node_t zcd_node; 4399 uint64_t zcd_txg; 4400 int zcd_expected_err; 4401 boolean_t zcd_added; 4402 boolean_t zcd_called; 4403 spa_t *zcd_spa; 4404} ztest_cb_data_t; 4405 4406/* This is the actual commit callback function */ 4407static void 4408ztest_commit_callback(void *arg, int error) 4409{ 4410 ztest_cb_data_t *data = arg; 4411 uint64_t synced_txg; 4412 4413 VERIFY(data != NULL); 4414 VERIFY3S(data->zcd_expected_err, ==, error); 4415 VERIFY(!data->zcd_called); 4416 4417 synced_txg = spa_last_synced_txg(data->zcd_spa); 4418 if (data->zcd_txg > synced_txg) 4419 fatal(0, "commit callback of txg %" PRIu64 " called prematurely" 4420 ", last synced txg = %" PRIu64 "\n", data->zcd_txg, 4421 synced_txg); 4422 4423 data->zcd_called = B_TRUE; 4424 4425 if (error == ECANCELED) { 4426 ASSERT0(data->zcd_txg); 4427 ASSERT(!data->zcd_added); 4428 4429 /* 4430 * The private callback data should be destroyed here, but 4431 * since we are going to check the zcd_called field after 4432 * dmu_tx_abort(), we will destroy it there. 4433 */ 4434 return; 4435 } 4436 4437 /* Was this callback added to the global callback list? */ 4438 if (!data->zcd_added) 4439 goto out; 4440 4441 ASSERT3U(data->zcd_txg, !=, 0); 4442 4443 /* Remove our callback from the list */ 4444 (void) mutex_lock(&zcl.zcl_callbacks_lock); 4445 list_remove(&zcl.zcl_callbacks, data); 4446 (void) mutex_unlock(&zcl.zcl_callbacks_lock); 4447 4448out: 4449 umem_free(data, sizeof (ztest_cb_data_t)); 4450} 4451 4452/* Allocate and initialize callback data structure */ 4453static ztest_cb_data_t * 4454ztest_create_cb_data(objset_t *os, uint64_t txg) 4455{ 4456 ztest_cb_data_t *cb_data; 4457 4458 cb_data = umem_zalloc(sizeof (ztest_cb_data_t), UMEM_NOFAIL); 4459 4460 cb_data->zcd_txg = txg; 4461 cb_data->zcd_spa = dmu_objset_spa(os); 4462 4463 return (cb_data); 4464} 4465 4466/* 4467 * If a number of txgs equal to this threshold have been created after a commit 4468 * callback has been registered but not called, then we assume there is an 4469 * implementation bug. 4470 */ 4471#define ZTEST_COMMIT_CALLBACK_THRESH (TXG_CONCURRENT_STATES + 2) 4472 4473/* 4474 * Commit callback test. 4475 */ 4476void 4477ztest_dmu_commit_callbacks(ztest_ds_t *zd, uint64_t id) 4478{ 4479 objset_t *os = zd->zd_os; 4480 ztest_od_t od[1]; 4481 dmu_tx_t *tx; 4482 ztest_cb_data_t *cb_data[3], *tmp_cb; 4483 uint64_t old_txg, txg; 4484 int i, error; 4485 4486 ztest_od_init(&od[0], id, FTAG, 0, DMU_OT_UINT64_OTHER, 0, 0); 4487 4488 if (ztest_object_init(zd, od, sizeof (od), B_FALSE) != 0) 4489 return; 4490 4491 tx = dmu_tx_create(os); 4492 4493 cb_data[0] = ztest_create_cb_data(os, 0); 4494 dmu_tx_callback_register(tx, ztest_commit_callback, cb_data[0]); 4495 4496 dmu_tx_hold_write(tx, od[0].od_object, 0, sizeof (uint64_t)); 4497 4498 /* Every once in a while, abort the transaction on purpose */ 4499 if (ztest_random(100) == 0) 4500 error = -1; 4501 4502 if (!error) 4503 error = dmu_tx_assign(tx, TXG_NOWAIT); 4504 4505 txg = error ? 0 : dmu_tx_get_txg(tx); 4506 4507 cb_data[0]->zcd_txg = txg; 4508 cb_data[1] = ztest_create_cb_data(os, txg); 4509 dmu_tx_callback_register(tx, ztest_commit_callback, cb_data[1]); 4510 4511 if (error) { 4512 /* 4513 * It's not a strict requirement to call the registered 4514 * callbacks from inside dmu_tx_abort(), but that's what 4515 * it's supposed to happen in the current implementation 4516 * so we will check for that. 4517 */ 4518 for (i = 0; i < 2; i++) { 4519 cb_data[i]->zcd_expected_err = ECANCELED; 4520 VERIFY(!cb_data[i]->zcd_called); 4521 } 4522 4523 dmu_tx_abort(tx); 4524 4525 for (i = 0; i < 2; i++) { 4526 VERIFY(cb_data[i]->zcd_called); 4527 umem_free(cb_data[i], sizeof (ztest_cb_data_t)); 4528 } 4529 4530 return; 4531 } 4532 4533 cb_data[2] = ztest_create_cb_data(os, txg); 4534 dmu_tx_callback_register(tx, ztest_commit_callback, cb_data[2]); 4535 4536 /* 4537 * Read existing data to make sure there isn't a future leak. 4538 */ 4539 VERIFY(0 == dmu_read(os, od[0].od_object, 0, sizeof (uint64_t), 4540 &old_txg, DMU_READ_PREFETCH)); 4541 4542 if (old_txg > txg) 4543 fatal(0, "future leak: got %" PRIu64 ", open txg is %" PRIu64, 4544 old_txg, txg); 4545 4546 dmu_write(os, od[0].od_object, 0, sizeof (uint64_t), &txg, tx); 4547 4548 (void) mutex_lock(&zcl.zcl_callbacks_lock); 4549 4550 /* 4551 * Since commit callbacks don't have any ordering requirement and since 4552 * it is theoretically possible for a commit callback to be called 4553 * after an arbitrary amount of time has elapsed since its txg has been 4554 * synced, it is difficult to reliably determine whether a commit 4555 * callback hasn't been called due to high load or due to a flawed 4556 * implementation. 4557 * 4558 * In practice, we will assume that if after a certain number of txgs a 4559 * commit callback hasn't been called, then most likely there's an 4560 * implementation bug.. 4561 */ 4562 tmp_cb = list_head(&zcl.zcl_callbacks); 4563 if (tmp_cb != NULL && 4564 (txg - ZTEST_COMMIT_CALLBACK_THRESH) > tmp_cb->zcd_txg) { 4565 fatal(0, "Commit callback threshold exceeded, oldest txg: %" 4566 PRIu64 ", open txg: %" PRIu64 "\n", tmp_cb->zcd_txg, txg); 4567 } 4568 4569 /* 4570 * Let's find the place to insert our callbacks. 4571 * 4572 * Even though the list is ordered by txg, it is possible for the 4573 * insertion point to not be the end because our txg may already be 4574 * quiescing at this point and other callbacks in the open txg 4575 * (from other objsets) may have sneaked in. 4576 */ 4577 tmp_cb = list_tail(&zcl.zcl_callbacks); 4578 while (tmp_cb != NULL && tmp_cb->zcd_txg > txg) 4579 tmp_cb = list_prev(&zcl.zcl_callbacks, tmp_cb); 4580 4581 /* Add the 3 callbacks to the list */ 4582 for (i = 0; i < 3; i++) { 4583 if (tmp_cb == NULL) 4584 list_insert_head(&zcl.zcl_callbacks, cb_data[i]); 4585 else 4586 list_insert_after(&zcl.zcl_callbacks, tmp_cb, 4587 cb_data[i]); 4588 4589 cb_data[i]->zcd_added = B_TRUE; 4590 VERIFY(!cb_data[i]->zcd_called); 4591 4592 tmp_cb = cb_data[i]; 4593 } 4594 4595 (void) mutex_unlock(&zcl.zcl_callbacks_lock); 4596 4597 dmu_tx_commit(tx); 4598} 4599 4600/* ARGSUSED */ 4601void 4602ztest_dsl_prop_get_set(ztest_ds_t *zd, uint64_t id) 4603{ 4604 zfs_prop_t proplist[] = { 4605 ZFS_PROP_CHECKSUM, 4606 ZFS_PROP_COMPRESSION, 4607 ZFS_PROP_COPIES, 4608 ZFS_PROP_DEDUP 4609 }; 4610 4611 (void) rw_rdlock(&ztest_name_lock); 4612 4613 for (int p = 0; p < sizeof (proplist) / sizeof (proplist[0]); p++) 4614 (void) ztest_dsl_prop_set_uint64(zd->zd_name, proplist[p], 4615 ztest_random_dsl_prop(proplist[p]), (int)ztest_random(2)); 4616 4617 (void) rw_unlock(&ztest_name_lock); 4618} 4619 4620/* ARGSUSED */ 4621void 4622ztest_spa_prop_get_set(ztest_ds_t *zd, uint64_t id) 4623{ 4624 nvlist_t *props = NULL; 4625 4626 (void) rw_rdlock(&ztest_name_lock); 4627 4628 (void) ztest_spa_prop_set_uint64(ZPOOL_PROP_DEDUPDITTO, 4629 ZIO_DEDUPDITTO_MIN + ztest_random(ZIO_DEDUPDITTO_MIN)); 4630 4631 VERIFY0(spa_prop_get(ztest_spa, &props)); 4632 4633 if (ztest_opts.zo_verbose >= 6) 4634 dump_nvlist(props, 4); 4635 4636 nvlist_free(props); 4637 4638 (void) rw_unlock(&ztest_name_lock); 4639} 4640 4641static int 4642user_release_one(const char *snapname, const char *holdname) 4643{ 4644 nvlist_t *snaps, *holds; 4645 int error; 4646 4647 snaps = fnvlist_alloc(); 4648 holds = fnvlist_alloc(); 4649 fnvlist_add_boolean(holds, holdname); 4650 fnvlist_add_nvlist(snaps, snapname, holds); 4651 fnvlist_free(holds); 4652 error = dsl_dataset_user_release(snaps, NULL); 4653 fnvlist_free(snaps); 4654 return (error); 4655} 4656 4657/* 4658 * Test snapshot hold/release and deferred destroy. 4659 */ 4660void 4661ztest_dmu_snapshot_hold(ztest_ds_t *zd, uint64_t id) 4662{ 4663 int error; 4664 objset_t *os = zd->zd_os; 4665 objset_t *origin; 4666 char snapname[100]; 4667 char fullname[100]; 4668 char clonename[100]; 4669 char tag[100]; 4670 char osname[MAXNAMELEN]; 4671 nvlist_t *holds; 4672 4673 (void) rw_rdlock(&ztest_name_lock); 4674 4675 dmu_objset_name(os, osname); 4676 4677 (void) snprintf(snapname, sizeof (snapname), "sh1_%llu", id); 4678 (void) snprintf(fullname, sizeof (fullname), "%s@%s", osname, snapname); 4679 (void) snprintf(clonename, sizeof (clonename), 4680 "%s/ch1_%llu", osname, id); 4681 (void) snprintf(tag, sizeof (tag), "tag_%llu", id); 4682 4683 /* 4684 * Clean up from any previous run. 4685 */ 4686 error = dsl_destroy_head(clonename); 4687 if (error != ENOENT) 4688 ASSERT0(error); 4689 error = user_release_one(fullname, tag); 4690 if (error != ESRCH && error != ENOENT) 4691 ASSERT0(error); 4692 error = dsl_destroy_snapshot(fullname, B_FALSE); 4693 if (error != ENOENT) 4694 ASSERT0(error); 4695 4696 /* 4697 * Create snapshot, clone it, mark snap for deferred destroy, 4698 * destroy clone, verify snap was also destroyed. 4699 */ 4700 error = dmu_objset_snapshot_one(osname, snapname); 4701 if (error) { 4702 if (error == ENOSPC) { 4703 ztest_record_enospc("dmu_objset_snapshot"); 4704 goto out; 4705 } 4706 fatal(0, "dmu_objset_snapshot(%s) = %d", fullname, error); 4707 } 4708 4709 error = dmu_objset_clone(clonename, fullname); 4710 if (error) { 4711 if (error == ENOSPC) { 4712 ztest_record_enospc("dmu_objset_clone"); 4713 goto out; 4714 } 4715 fatal(0, "dmu_objset_clone(%s) = %d", clonename, error); 4716 } 4717 4718 error = dsl_destroy_snapshot(fullname, B_TRUE); 4719 if (error) { 4720 fatal(0, "dsl_destroy_snapshot(%s, B_TRUE) = %d", 4721 fullname, error); 4722 } 4723 4724 error = dsl_destroy_head(clonename); 4725 if (error) 4726 fatal(0, "dsl_destroy_head(%s) = %d", clonename, error); 4727 4728 error = dmu_objset_hold(fullname, FTAG, &origin); 4729 if (error != ENOENT) 4730 fatal(0, "dmu_objset_hold(%s) = %d", fullname, error); 4731 4732 /* 4733 * Create snapshot, add temporary hold, verify that we can't 4734 * destroy a held snapshot, mark for deferred destroy, 4735 * release hold, verify snapshot was destroyed. 4736 */ 4737 error = dmu_objset_snapshot_one(osname, snapname); 4738 if (error) { 4739 if (error == ENOSPC) { 4740 ztest_record_enospc("dmu_objset_snapshot"); 4741 goto out; 4742 } 4743 fatal(0, "dmu_objset_snapshot(%s) = %d", fullname, error); 4744 } 4745 4746 holds = fnvlist_alloc(); 4747 fnvlist_add_string(holds, fullname, tag); 4748 error = dsl_dataset_user_hold(holds, 0, NULL); 4749 fnvlist_free(holds); 4750 4751 if (error == ENOSPC) { 4752 ztest_record_enospc("dsl_dataset_user_hold"); 4753 goto out; 4754 } else if (error) { 4755 fatal(0, "dsl_dataset_user_hold(%s, %s) = %u", 4756 fullname, tag, error); 4757 } 4758 4759 error = dsl_destroy_snapshot(fullname, B_FALSE); 4760 if (error != EBUSY) { 4761 fatal(0, "dsl_destroy_snapshot(%s, B_FALSE) = %d", 4762 fullname, error); 4763 } 4764 4765 error = dsl_destroy_snapshot(fullname, B_TRUE); 4766 if (error) { 4767 fatal(0, "dsl_destroy_snapshot(%s, B_TRUE) = %d", 4768 fullname, error); 4769 } 4770 4771 error = user_release_one(fullname, tag); 4772 if (error) 4773 fatal(0, "user_release_one(%s, %s) = %d", fullname, tag, error); 4774 4775 VERIFY3U(dmu_objset_hold(fullname, FTAG, &origin), ==, ENOENT); 4776 4777out: 4778 (void) rw_unlock(&ztest_name_lock); 4779} 4780 4781/* 4782 * Inject random faults into the on-disk data. 4783 */ 4784/* ARGSUSED */ 4785void 4786ztest_fault_inject(ztest_ds_t *zd, uint64_t id) 4787{ 4788 ztest_shared_t *zs = ztest_shared; 4789 spa_t *spa = ztest_spa; 4790 int fd; 4791 uint64_t offset; 4792 uint64_t leaves; 4793 uint64_t bad = 0x1990c0ffeedecadeULL; 4794 uint64_t top, leaf; 4795 char path0[MAXPATHLEN]; 4796 char pathrand[MAXPATHLEN]; 4797 size_t fsize; 4798 int bshift = SPA_OLD_MAXBLOCKSHIFT + 2; /* don't scrog all labels */ 4799 int iters = 1000; 4800 int maxfaults; 4801 int mirror_save; 4802 vdev_t *vd0 = NULL; 4803 uint64_t guid0 = 0; 4804 boolean_t islog = B_FALSE; 4805 4806 VERIFY(mutex_lock(&ztest_vdev_lock) == 0); 4807 maxfaults = MAXFAULTS(); 4808 leaves = MAX(zs->zs_mirrors, 1) * ztest_opts.zo_raidz; 4809 mirror_save = zs->zs_mirrors; 4810 VERIFY(mutex_unlock(&ztest_vdev_lock) == 0); 4811 4812 ASSERT(leaves >= 1); 4813 4814 /* 4815 * Grab the name lock as reader. There are some operations 4816 * which don't like to have their vdevs changed while 4817 * they are in progress (i.e. spa_change_guid). Those 4818 * operations will have grabbed the name lock as writer. 4819 */ 4820 (void) rw_rdlock(&ztest_name_lock); 4821 4822 /* 4823 * We need SCL_STATE here because we're going to look at vd0->vdev_tsd. 4824 */ 4825 spa_config_enter(spa, SCL_STATE, FTAG, RW_READER); 4826 4827 if (ztest_random(2) == 0) { 4828 /* 4829 * Inject errors on a normal data device or slog device. 4830 */ 4831 top = ztest_random_vdev_top(spa, B_TRUE); 4832 leaf = ztest_random(leaves) + zs->zs_splits; 4833 4834 /* 4835 * Generate paths to the first leaf in this top-level vdev, 4836 * and to the random leaf we selected. We'll induce transient 4837 * write failures and random online/offline activity on leaf 0, 4838 * and we'll write random garbage to the randomly chosen leaf. 4839 */ 4840 (void) snprintf(path0, sizeof (path0), ztest_dev_template, 4841 ztest_opts.zo_dir, ztest_opts.zo_pool, 4842 top * leaves + zs->zs_splits); 4843 (void) snprintf(pathrand, sizeof (pathrand), ztest_dev_template, 4844 ztest_opts.zo_dir, ztest_opts.zo_pool, 4845 top * leaves + leaf); 4846 4847 vd0 = vdev_lookup_by_path(spa->spa_root_vdev, path0); 4848 if (vd0 != NULL && vd0->vdev_top->vdev_islog) 4849 islog = B_TRUE; 4850 4851 /* 4852 * If the top-level vdev needs to be resilvered 4853 * then we only allow faults on the device that is 4854 * resilvering. 4855 */ 4856 if (vd0 != NULL && maxfaults != 1 && 4857 (!vdev_resilver_needed(vd0->vdev_top, NULL, NULL) || 4858 vd0->vdev_resilver_txg != 0)) { 4859 /* 4860 * Make vd0 explicitly claim to be unreadable, 4861 * or unwriteable, or reach behind its back 4862 * and close the underlying fd. We can do this if 4863 * maxfaults == 0 because we'll fail and reexecute, 4864 * and we can do it if maxfaults >= 2 because we'll 4865 * have enough redundancy. If maxfaults == 1, the 4866 * combination of this with injection of random data 4867 * corruption below exceeds the pool's fault tolerance. 4868 */ 4869 vdev_file_t *vf = vd0->vdev_tsd; 4870 4871 if (vf != NULL && ztest_random(3) == 0) { 4872 (void) close(vf->vf_vnode->v_fd); 4873 vf->vf_vnode->v_fd = -1; 4874 } else if (ztest_random(2) == 0) { 4875 vd0->vdev_cant_read = B_TRUE; 4876 } else { 4877 vd0->vdev_cant_write = B_TRUE; 4878 } 4879 guid0 = vd0->vdev_guid; 4880 } 4881 } else { 4882 /* 4883 * Inject errors on an l2cache device. 4884 */ 4885 spa_aux_vdev_t *sav = &spa->spa_l2cache; 4886 4887 if (sav->sav_count == 0) { 4888 spa_config_exit(spa, SCL_STATE, FTAG); 4889 (void) rw_unlock(&ztest_name_lock); 4890 return; 4891 } 4892 vd0 = sav->sav_vdevs[ztest_random(sav->sav_count)]; 4893 guid0 = vd0->vdev_guid; 4894 (void) strcpy(path0, vd0->vdev_path); 4895 (void) strcpy(pathrand, vd0->vdev_path); 4896 4897 leaf = 0; 4898 leaves = 1; 4899 maxfaults = INT_MAX; /* no limit on cache devices */ 4900 } 4901 4902 spa_config_exit(spa, SCL_STATE, FTAG); 4903 (void) rw_unlock(&ztest_name_lock); 4904 4905 /* 4906 * If we can tolerate two or more faults, or we're dealing 4907 * with a slog, randomly online/offline vd0. 4908 */ 4909 if ((maxfaults >= 2 || islog) && guid0 != 0) { 4910 if (ztest_random(10) < 6) { 4911 int flags = (ztest_random(2) == 0 ? 4912 ZFS_OFFLINE_TEMPORARY : 0); 4913 4914 /* 4915 * We have to grab the zs_name_lock as writer to 4916 * prevent a race between offlining a slog and 4917 * destroying a dataset. Offlining the slog will 4918 * grab a reference on the dataset which may cause 4919 * dmu_objset_destroy() to fail with EBUSY thus 4920 * leaving the dataset in an inconsistent state. 4921 */ 4922 if (islog) 4923 (void) rw_wrlock(&ztest_name_lock); 4924 4925 VERIFY(vdev_offline(spa, guid0, flags) != EBUSY); 4926 4927 if (islog) 4928 (void) rw_unlock(&ztest_name_lock); 4929 } else { 4930 /* 4931 * Ideally we would like to be able to randomly 4932 * call vdev_[on|off]line without holding locks 4933 * to force unpredictable failures but the side 4934 * effects of vdev_[on|off]line prevent us from 4935 * doing so. We grab the ztest_vdev_lock here to 4936 * prevent a race between injection testing and 4937 * aux_vdev removal. 4938 */ 4939 VERIFY(mutex_lock(&ztest_vdev_lock) == 0); 4940 (void) vdev_online(spa, guid0, 0, NULL); 4941 VERIFY(mutex_unlock(&ztest_vdev_lock) == 0); 4942 } 4943 } 4944 4945 if (maxfaults == 0) 4946 return; 4947 4948 /* 4949 * We have at least single-fault tolerance, so inject data corruption. 4950 */ 4951 fd = open(pathrand, O_RDWR); 4952 4953 if (fd == -1) /* we hit a gap in the device namespace */ 4954 return; 4955 4956 fsize = lseek(fd, 0, SEEK_END); 4957 4958 while (--iters != 0) { 4959 offset = ztest_random(fsize / (leaves << bshift)) * 4960 (leaves << bshift) + (leaf << bshift) + 4961 (ztest_random(1ULL << (bshift - 1)) & -8ULL); 4962 4963 if (offset >= fsize) 4964 continue; 4965 4966 VERIFY(mutex_lock(&ztest_vdev_lock) == 0); 4967 if (mirror_save != zs->zs_mirrors) { 4968 VERIFY(mutex_unlock(&ztest_vdev_lock) == 0); 4969 (void) close(fd); 4970 return; 4971 } 4972 4973 if (pwrite(fd, &bad, sizeof (bad), offset) != sizeof (bad)) 4974 fatal(1, "can't inject bad word at 0x%llx in %s", 4975 offset, pathrand); 4976 4977 VERIFY(mutex_unlock(&ztest_vdev_lock) == 0); 4978 4979 if (ztest_opts.zo_verbose >= 7) 4980 (void) printf("injected bad word into %s," 4981 " offset 0x%llx\n", pathrand, (u_longlong_t)offset); 4982 } 4983 4984 (void) close(fd); 4985} 4986 4987/* 4988 * Verify that DDT repair works as expected. 4989 */ 4990void 4991ztest_ddt_repair(ztest_ds_t *zd, uint64_t id) 4992{ 4993 ztest_shared_t *zs = ztest_shared; 4994 spa_t *spa = ztest_spa; 4995 objset_t *os = zd->zd_os; 4996 ztest_od_t od[1]; 4997 uint64_t object, blocksize, txg, pattern, psize; 4998 enum zio_checksum checksum = spa_dedup_checksum(spa); 4999 dmu_buf_t *db; 5000 dmu_tx_t *tx; 5001 void *buf; 5002 blkptr_t blk; 5003 int copies = 2 * ZIO_DEDUPDITTO_MIN; 5004 5005 blocksize = ztest_random_blocksize(); 5006 blocksize = MIN(blocksize, 2048); /* because we write so many */ 5007 5008 ztest_od_init(&od[0], id, FTAG, 0, DMU_OT_UINT64_OTHER, blocksize, 0); 5009 5010 if (ztest_object_init(zd, od, sizeof (od), B_FALSE) != 0) 5011 return; 5012 5013 /* 5014 * Take the name lock as writer to prevent anyone else from changing 5015 * the pool and dataset properies we need to maintain during this test. 5016 */ 5017 (void) rw_wrlock(&ztest_name_lock); 5018 5019 if (ztest_dsl_prop_set_uint64(zd->zd_name, ZFS_PROP_DEDUP, checksum, 5020 B_FALSE) != 0 || 5021 ztest_dsl_prop_set_uint64(zd->zd_name, ZFS_PROP_COPIES, 1, 5022 B_FALSE) != 0) { 5023 (void) rw_unlock(&ztest_name_lock); 5024 return; 5025 } 5026 5027 object = od[0].od_object; 5028 blocksize = od[0].od_blocksize; 5029 pattern = zs->zs_guid ^ dmu_objset_fsid_guid(os); 5030 5031 ASSERT(object != 0); 5032 5033 tx = dmu_tx_create(os); 5034 dmu_tx_hold_write(tx, object, 0, copies * blocksize); 5035 txg = ztest_tx_assign(tx, TXG_WAIT, FTAG); 5036 if (txg == 0) { 5037 (void) rw_unlock(&ztest_name_lock); 5038 return; 5039 } 5040 5041 /* 5042 * Write all the copies of our block. 5043 */ 5044 for (int i = 0; i < copies; i++) { 5045 uint64_t offset = i * blocksize; 5046 int error = dmu_buf_hold(os, object, offset, FTAG, &db, 5047 DMU_READ_NO_PREFETCH); 5048 if (error != 0) { 5049 fatal(B_FALSE, "dmu_buf_hold(%p, %llu, %llu) = %u", 5050 os, (long long)object, (long long) offset, error); 5051 } 5052 ASSERT(db->db_offset == offset); 5053 ASSERT(db->db_size == blocksize); 5054 ASSERT(ztest_pattern_match(db->db_data, db->db_size, pattern) || 5055 ztest_pattern_match(db->db_data, db->db_size, 0ULL)); 5056 dmu_buf_will_fill(db, tx); 5057 ztest_pattern_set(db->db_data, db->db_size, pattern); 5058 dmu_buf_rele(db, FTAG); 5059 } 5060 5061 dmu_tx_commit(tx); 5062 txg_wait_synced(spa_get_dsl(spa), txg); 5063 5064 /* 5065 * Find out what block we got. 5066 */ 5067 VERIFY0(dmu_buf_hold(os, object, 0, FTAG, &db, 5068 DMU_READ_NO_PREFETCH)); 5069 blk = *((dmu_buf_impl_t *)db)->db_blkptr; 5070 dmu_buf_rele(db, FTAG); 5071 5072 /* 5073 * Damage the block. Dedup-ditto will save us when we read it later. 5074 */ 5075 psize = BP_GET_PSIZE(&blk); 5076 buf = zio_buf_alloc(psize); 5077 ztest_pattern_set(buf, psize, ~pattern); 5078 5079 (void) zio_wait(zio_rewrite(NULL, spa, 0, &blk, 5080 buf, psize, NULL, NULL, ZIO_PRIORITY_SYNC_WRITE, 5081 ZIO_FLAG_CANFAIL | ZIO_FLAG_INDUCE_DAMAGE, NULL)); 5082 5083 zio_buf_free(buf, psize); 5084 5085 (void) rw_unlock(&ztest_name_lock); 5086} 5087 5088/* 5089 * Scrub the pool. 5090 */ 5091/* ARGSUSED */ 5092void 5093ztest_scrub(ztest_ds_t *zd, uint64_t id) 5094{ 5095 spa_t *spa = ztest_spa; 5096 5097 (void) spa_scan(spa, POOL_SCAN_SCRUB); 5098 (void) poll(NULL, 0, 100); /* wait a moment, then force a restart */ 5099 (void) spa_scan(spa, POOL_SCAN_SCRUB); 5100} 5101 5102/* 5103 * Change the guid for the pool. 5104 */ 5105/* ARGSUSED */ 5106void 5107ztest_reguid(ztest_ds_t *zd, uint64_t id) 5108{ 5109 spa_t *spa = ztest_spa; 5110 uint64_t orig, load; 5111 int error; 5112 5113 orig = spa_guid(spa); 5114 load = spa_load_guid(spa); 5115 5116 (void) rw_wrlock(&ztest_name_lock); 5117 error = spa_change_guid(spa); 5118 (void) rw_unlock(&ztest_name_lock); 5119 5120 if (error != 0) 5121 return; 5122 5123 if (ztest_opts.zo_verbose >= 4) { 5124 (void) printf("Changed guid old %llu -> %llu\n", 5125 (u_longlong_t)orig, (u_longlong_t)spa_guid(spa)); 5126 } 5127 5128 VERIFY3U(orig, !=, spa_guid(spa)); 5129 VERIFY3U(load, ==, spa_load_guid(spa)); 5130} 5131 5132/* 5133 * Rename the pool to a different name and then rename it back. 5134 */ 5135/* ARGSUSED */ 5136void 5137ztest_spa_rename(ztest_ds_t *zd, uint64_t id) 5138{ 5139 char *oldname, *newname; 5140 spa_t *spa; 5141 5142 (void) rw_wrlock(&ztest_name_lock); 5143 5144 oldname = ztest_opts.zo_pool; 5145 newname = umem_alloc(strlen(oldname) + 5, UMEM_NOFAIL); 5146 (void) strcpy(newname, oldname); 5147 (void) strcat(newname, "_tmp"); 5148 5149 /* 5150 * Do the rename 5151 */ 5152 VERIFY3U(0, ==, spa_rename(oldname, newname)); 5153 5154 /* 5155 * Try to open it under the old name, which shouldn't exist 5156 */ 5157 VERIFY3U(ENOENT, ==, spa_open(oldname, &spa, FTAG)); 5158 5159 /* 5160 * Open it under the new name and make sure it's still the same spa_t. 5161 */ 5162 VERIFY3U(0, ==, spa_open(newname, &spa, FTAG)); 5163 5164 ASSERT(spa == ztest_spa); 5165 spa_close(spa, FTAG); 5166 5167 /* 5168 * Rename it back to the original 5169 */ 5170 VERIFY3U(0, ==, spa_rename(newname, oldname)); 5171 5172 /* 5173 * Make sure it can still be opened 5174 */ 5175 VERIFY3U(0, ==, spa_open(oldname, &spa, FTAG)); 5176 5177 ASSERT(spa == ztest_spa); 5178 spa_close(spa, FTAG); 5179 5180 umem_free(newname, strlen(newname) + 1); 5181 5182 (void) rw_unlock(&ztest_name_lock); 5183} 5184 5185/* 5186 * Verify pool integrity by running zdb. 5187 */ 5188static void 5189ztest_run_zdb(char *pool) 5190{ 5191 int status; 5192 char zdb[MAXPATHLEN + MAXNAMELEN + 20]; 5193 char zbuf[1024]; 5194 char *bin; 5195 char *ztest; 5196 char *isa; 5197 int isalen; 5198 FILE *fp; 5199 5200 strlcpy(zdb, "/usr/bin/ztest", sizeof(zdb)); 5201 5202 /* zdb lives in /usr/sbin, while ztest lives in /usr/bin */ 5203 bin = strstr(zdb, "/usr/bin/"); 5204 ztest = strstr(bin, "/ztest"); 5205 isa = bin + 8; 5206 isalen = ztest - isa; 5207 isa = strdup(isa); 5208 /* LINTED */ 5209 (void) sprintf(bin, 5210 "/usr/sbin%.*s/zdb -bcc%s%s -d -U %s %s", 5211 isalen, 5212 isa, 5213 ztest_opts.zo_verbose >= 3 ? "s" : "", 5214 ztest_opts.zo_verbose >= 4 ? "v" : "", 5215 spa_config_path, 5216 pool); 5217 free(isa); 5218 5219 if (ztest_opts.zo_verbose >= 5) 5220 (void) printf("Executing %s\n", strstr(zdb, "zdb ")); 5221 5222 fp = popen(zdb, "r"); 5223 assert(fp != NULL); 5224 5225 while (fgets(zbuf, sizeof (zbuf), fp) != NULL) 5226 if (ztest_opts.zo_verbose >= 3) 5227 (void) printf("%s", zbuf); 5228 5229 status = pclose(fp); 5230 5231 if (status == 0) 5232 return; 5233 5234 ztest_dump_core = 0; 5235 if (WIFEXITED(status)) 5236 fatal(0, "'%s' exit code %d", zdb, WEXITSTATUS(status)); 5237 else 5238 fatal(0, "'%s' died with signal %d", zdb, WTERMSIG(status)); 5239} 5240 5241static void 5242ztest_walk_pool_directory(char *header) 5243{ 5244 spa_t *spa = NULL; 5245 5246 if (ztest_opts.zo_verbose >= 6) 5247 (void) printf("%s\n", header); 5248 5249 mutex_enter(&spa_namespace_lock); 5250 while ((spa = spa_next(spa)) != NULL) 5251 if (ztest_opts.zo_verbose >= 6) 5252 (void) printf("\t%s\n", spa_name(spa)); 5253 mutex_exit(&spa_namespace_lock); 5254} 5255 5256static void 5257ztest_spa_import_export(char *oldname, char *newname) 5258{ 5259 nvlist_t *config, *newconfig; 5260 uint64_t pool_guid; 5261 spa_t *spa; 5262 int error; 5263 5264 if (ztest_opts.zo_verbose >= 4) { 5265 (void) printf("import/export: old = %s, new = %s\n", 5266 oldname, newname); 5267 } 5268 5269 /* 5270 * Clean up from previous runs. 5271 */ 5272 (void) spa_destroy(newname); 5273 5274 /* 5275 * Get the pool's configuration and guid. 5276 */ 5277 VERIFY3U(0, ==, spa_open(oldname, &spa, FTAG)); 5278 5279 /* 5280 * Kick off a scrub to tickle scrub/export races. 5281 */ 5282 if (ztest_random(2) == 0) 5283 (void) spa_scan(spa, POOL_SCAN_SCRUB); 5284 5285 pool_guid = spa_guid(spa); 5286 spa_close(spa, FTAG); 5287 5288 ztest_walk_pool_directory("pools before export"); 5289 5290 /* 5291 * Export it. 5292 */ 5293 VERIFY3U(0, ==, spa_export(oldname, &config, B_FALSE, B_FALSE)); 5294 5295 ztest_walk_pool_directory("pools after export"); 5296 5297 /* 5298 * Try to import it. 5299 */ 5300 newconfig = spa_tryimport(config); 5301 ASSERT(newconfig != NULL); 5302 nvlist_free(newconfig); 5303 5304 /* 5305 * Import it under the new name. 5306 */ 5307 error = spa_import(newname, config, NULL, 0); 5308 if (error != 0) { 5309 dump_nvlist(config, 0); 5310 fatal(B_FALSE, "couldn't import pool %s as %s: error %u", 5311 oldname, newname, error); 5312 } 5313 5314 ztest_walk_pool_directory("pools after import"); 5315 5316 /* 5317 * Try to import it again -- should fail with EEXIST. 5318 */ 5319 VERIFY3U(EEXIST, ==, spa_import(newname, config, NULL, 0)); 5320 5321 /* 5322 * Try to import it under a different name -- should fail with EEXIST. 5323 */ 5324 VERIFY3U(EEXIST, ==, spa_import(oldname, config, NULL, 0)); 5325 5326 /* 5327 * Verify that the pool is no longer visible under the old name. 5328 */ 5329 VERIFY3U(ENOENT, ==, spa_open(oldname, &spa, FTAG)); 5330 5331 /* 5332 * Verify that we can open and close the pool using the new name. 5333 */ 5334 VERIFY3U(0, ==, spa_open(newname, &spa, FTAG)); 5335 ASSERT(pool_guid == spa_guid(spa)); 5336 spa_close(spa, FTAG); 5337 5338 nvlist_free(config); 5339} 5340 5341static void 5342ztest_resume(spa_t *spa) 5343{ 5344 if (spa_suspended(spa) && ztest_opts.zo_verbose >= 6) 5345 (void) printf("resuming from suspended state\n"); 5346 spa_vdev_state_enter(spa, SCL_NONE); 5347 vdev_clear(spa, NULL); 5348 (void) spa_vdev_state_exit(spa, NULL, 0); 5349 (void) zio_resume(spa); 5350} 5351 5352static void * 5353ztest_resume_thread(void *arg) 5354{ 5355 spa_t *spa = arg; 5356 5357 while (!ztest_exiting) { 5358 if (spa_suspended(spa)) 5359 ztest_resume(spa); 5360 (void) poll(NULL, 0, 100); 5361 } 5362 return (NULL); 5363} 5364 5365static void * 5366ztest_deadman_thread(void *arg) 5367{ 5368 ztest_shared_t *zs = arg; 5369 spa_t *spa = ztest_spa; 5370 hrtime_t delta, total = 0; 5371 5372 for (;;) { 5373 delta = zs->zs_thread_stop - zs->zs_thread_start + 5374 MSEC2NSEC(zfs_deadman_synctime_ms); 5375 5376 (void) poll(NULL, 0, (int)NSEC2MSEC(delta)); 5377 5378 /* 5379 * If the pool is suspended then fail immediately. Otherwise, 5380 * check to see if the pool is making any progress. If 5381 * vdev_deadman() discovers that there hasn't been any recent 5382 * I/Os then it will end up aborting the tests. 5383 */ 5384 if (spa_suspended(spa) || spa->spa_root_vdev == NULL) { 5385 fatal(0, "aborting test after %llu seconds because " 5386 "pool has transitioned to a suspended state.", 5387 zfs_deadman_synctime_ms / 1000); 5388 return (NULL); 5389 } 5390 vdev_deadman(spa->spa_root_vdev); 5391 5392 total += zfs_deadman_synctime_ms/1000; 5393 (void) printf("ztest has been running for %lld seconds\n", 5394 total); 5395 } 5396} 5397 5398static void 5399ztest_execute(int test, ztest_info_t *zi, uint64_t id) 5400{ 5401 ztest_ds_t *zd = &ztest_ds[id % ztest_opts.zo_datasets]; 5402 ztest_shared_callstate_t *zc = ZTEST_GET_SHARED_CALLSTATE(test); 5403 hrtime_t functime = gethrtime(); 5404 5405 for (int i = 0; i < zi->zi_iters; i++) 5406 zi->zi_func(zd, id); 5407 5408 functime = gethrtime() - functime; 5409 5410 atomic_add_64(&zc->zc_count, 1); 5411 atomic_add_64(&zc->zc_time, functime); 5412 5413 if (ztest_opts.zo_verbose >= 4) { 5414 Dl_info dli; 5415 (void) dladdr((void *)zi->zi_func, &dli); 5416 (void) printf("%6.2f sec in %s\n", 5417 (double)functime / NANOSEC, dli.dli_sname); 5418 } 5419} 5420 5421static void * 5422ztest_thread(void *arg) 5423{ 5424 int rand; 5425 uint64_t id = (uintptr_t)arg; 5426 ztest_shared_t *zs = ztest_shared; 5427 uint64_t call_next; 5428 hrtime_t now; 5429 ztest_info_t *zi; 5430 ztest_shared_callstate_t *zc; 5431 5432 while ((now = gethrtime()) < zs->zs_thread_stop) { 5433 /* 5434 * See if it's time to force a crash. 5435 */ 5436 if (now > zs->zs_thread_kill) 5437 ztest_kill(zs); 5438 5439 /* 5440 * If we're getting ENOSPC with some regularity, stop. 5441 */ 5442 if (zs->zs_enospc_count > 10) 5443 break; 5444 5445 /* 5446 * Pick a random function to execute. 5447 */ 5448 rand = ztest_random(ZTEST_FUNCS); 5449 zi = &ztest_info[rand]; 5450 zc = ZTEST_GET_SHARED_CALLSTATE(rand); 5451 call_next = zc->zc_next; 5452 5453 if (now >= call_next && 5454 atomic_cas_64(&zc->zc_next, call_next, call_next + 5455 ztest_random(2 * zi->zi_interval[0] + 1)) == call_next) { 5456 ztest_execute(rand, zi, id); 5457 } 5458 } 5459 5460 return (NULL); 5461} 5462 5463static void 5464ztest_dataset_name(char *dsname, char *pool, int d) 5465{ 5466 (void) snprintf(dsname, MAXNAMELEN, "%s/ds_%d", pool, d); 5467} 5468 5469static void 5470ztest_dataset_destroy(int d) 5471{ 5472 char name[MAXNAMELEN]; 5473 5474 ztest_dataset_name(name, ztest_opts.zo_pool, d); 5475 5476 if (ztest_opts.zo_verbose >= 3) 5477 (void) printf("Destroying %s to free up space\n", name); 5478 5479 /* 5480 * Cleanup any non-standard clones and snapshots. In general, 5481 * ztest thread t operates on dataset (t % zopt_datasets), 5482 * so there may be more than one thing to clean up. 5483 */ 5484 for (int t = d; t < ztest_opts.zo_threads; 5485 t += ztest_opts.zo_datasets) { 5486 ztest_dsl_dataset_cleanup(name, t); 5487 } 5488 5489 (void) dmu_objset_find(name, ztest_objset_destroy_cb, NULL, 5490 DS_FIND_SNAPSHOTS | DS_FIND_CHILDREN); 5491} 5492 5493static void 5494ztest_dataset_dirobj_verify(ztest_ds_t *zd) 5495{ 5496 uint64_t usedobjs, dirobjs, scratch; 5497 5498 /* 5499 * ZTEST_DIROBJ is the object directory for the entire dataset. 5500 * Therefore, the number of objects in use should equal the 5501 * number of ZTEST_DIROBJ entries, +1 for ZTEST_DIROBJ itself. 5502 * If not, we have an object leak. 5503 * 5504 * Note that we can only check this in ztest_dataset_open(), 5505 * when the open-context and syncing-context values agree. 5506 * That's because zap_count() returns the open-context value, 5507 * while dmu_objset_space() returns the rootbp fill count. 5508 */ 5509 VERIFY3U(0, ==, zap_count(zd->zd_os, ZTEST_DIROBJ, &dirobjs)); 5510 dmu_objset_space(zd->zd_os, &scratch, &scratch, &usedobjs, &scratch); 5511 ASSERT3U(dirobjs + 1, ==, usedobjs); 5512} 5513 5514static int 5515ztest_dataset_open(int d) 5516{ 5517 ztest_ds_t *zd = &ztest_ds[d]; 5518 uint64_t committed_seq = ZTEST_GET_SHARED_DS(d)->zd_seq; 5519 objset_t *os; 5520 zilog_t *zilog; 5521 char name[MAXNAMELEN]; 5522 int error; 5523 5524 ztest_dataset_name(name, ztest_opts.zo_pool, d); 5525 5526 (void) rw_rdlock(&ztest_name_lock); 5527 5528 error = ztest_dataset_create(name); 5529 if (error == ENOSPC) { 5530 (void) rw_unlock(&ztest_name_lock); 5531 ztest_record_enospc(FTAG); 5532 return (error); 5533 } 5534 ASSERT(error == 0 || error == EEXIST); 5535 5536 VERIFY0(dmu_objset_own(name, DMU_OST_OTHER, B_FALSE, zd, &os)); 5537 (void) rw_unlock(&ztest_name_lock); 5538 5539 ztest_zd_init(zd, ZTEST_GET_SHARED_DS(d), os); 5540 5541 zilog = zd->zd_zilog; 5542 5543 if (zilog->zl_header->zh_claim_lr_seq != 0 && 5544 zilog->zl_header->zh_claim_lr_seq < committed_seq) 5545 fatal(0, "missing log records: claimed %llu < committed %llu", 5546 zilog->zl_header->zh_claim_lr_seq, committed_seq); 5547 5548 ztest_dataset_dirobj_verify(zd); 5549 5550 zil_replay(os, zd, ztest_replay_vector); 5551 5552 ztest_dataset_dirobj_verify(zd); 5553 5554 if (ztest_opts.zo_verbose >= 6) 5555 (void) printf("%s replay %llu blocks, %llu records, seq %llu\n", 5556 zd->zd_name, 5557 (u_longlong_t)zilog->zl_parse_blk_count, 5558 (u_longlong_t)zilog->zl_parse_lr_count, 5559 (u_longlong_t)zilog->zl_replaying_seq); 5560 5561 zilog = zil_open(os, ztest_get_data); 5562 5563 if (zilog->zl_replaying_seq != 0 && 5564 zilog->zl_replaying_seq < committed_seq) 5565 fatal(0, "missing log records: replayed %llu < committed %llu", 5566 zilog->zl_replaying_seq, committed_seq); 5567 5568 return (0); 5569} 5570 5571static void 5572ztest_dataset_close(int d) 5573{ 5574 ztest_ds_t *zd = &ztest_ds[d]; 5575 5576 zil_close(zd->zd_zilog); 5577 dmu_objset_disown(zd->zd_os, zd); 5578 5579 ztest_zd_fini(zd); 5580} 5581 5582/* 5583 * Kick off threads to run tests on all datasets in parallel. 5584 */ 5585static void 5586ztest_run(ztest_shared_t *zs) 5587{ 5588 thread_t *tid; 5589 spa_t *spa; 5590 objset_t *os; 5591 thread_t resume_tid; 5592 int error; 5593 5594 ztest_exiting = B_FALSE; 5595 5596 /* 5597 * Initialize parent/child shared state. 5598 */ 5599 VERIFY(_mutex_init(&ztest_vdev_lock, USYNC_THREAD, NULL) == 0); 5600 VERIFY(rwlock_init(&ztest_name_lock, USYNC_THREAD, NULL) == 0); 5601 5602 zs->zs_thread_start = gethrtime(); 5603 zs->zs_thread_stop = 5604 zs->zs_thread_start + ztest_opts.zo_passtime * NANOSEC; 5605 zs->zs_thread_stop = MIN(zs->zs_thread_stop, zs->zs_proc_stop); 5606 zs->zs_thread_kill = zs->zs_thread_stop; 5607 if (ztest_random(100) < ztest_opts.zo_killrate) { 5608 zs->zs_thread_kill -= 5609 ztest_random(ztest_opts.zo_passtime * NANOSEC); 5610 } 5611 5612 (void) _mutex_init(&zcl.zcl_callbacks_lock, USYNC_THREAD, NULL); 5613 5614 list_create(&zcl.zcl_callbacks, sizeof (ztest_cb_data_t), 5615 offsetof(ztest_cb_data_t, zcd_node)); 5616 5617 /* 5618 * Open our pool. 5619 */ 5620 kernel_init(FREAD | FWRITE); 5621 VERIFY0(spa_open(ztest_opts.zo_pool, &spa, FTAG)); 5622 spa->spa_debug = B_TRUE; 5623 metaslab_preload_limit = ztest_random(20) + 1; 5624 ztest_spa = spa; 5625 5626 VERIFY0(dmu_objset_own(ztest_opts.zo_pool, 5627 DMU_OST_ANY, B_TRUE, FTAG, &os)); 5628 zs->zs_guid = dmu_objset_fsid_guid(os); 5629 dmu_objset_disown(os, FTAG); 5630 5631 spa->spa_dedup_ditto = 2 * ZIO_DEDUPDITTO_MIN; 5632 5633 /* 5634 * We don't expect the pool to suspend unless maxfaults == 0, 5635 * in which case ztest_fault_inject() temporarily takes away 5636 * the only valid replica. 5637 */ 5638 if (MAXFAULTS() == 0) 5639 spa->spa_failmode = ZIO_FAILURE_MODE_WAIT; 5640 else 5641 spa->spa_failmode = ZIO_FAILURE_MODE_PANIC; 5642 5643 /* 5644 * Create a thread to periodically resume suspended I/O. 5645 */ 5646 VERIFY(thr_create(0, 0, ztest_resume_thread, spa, THR_BOUND, 5647 &resume_tid) == 0); 5648 5649 /* 5650 * Create a deadman thread to abort() if we hang. 5651 */ 5652 VERIFY(thr_create(0, 0, ztest_deadman_thread, zs, THR_BOUND, 5653 NULL) == 0); 5654 5655 /* 5656 * Verify that we can safely inquire about about any object, 5657 * whether it's allocated or not. To make it interesting, 5658 * we probe a 5-wide window around each power of two. 5659 * This hits all edge cases, including zero and the max. 5660 */ 5661 for (int t = 0; t < 64; t++) { 5662 for (int d = -5; d <= 5; d++) { 5663 error = dmu_object_info(spa->spa_meta_objset, 5664 (1ULL << t) + d, NULL); 5665 ASSERT(error == 0 || error == ENOENT || 5666 error == EINVAL); 5667 } 5668 } 5669 5670 /* 5671 * If we got any ENOSPC errors on the previous run, destroy something. 5672 */ 5673 if (zs->zs_enospc_count != 0) { 5674 int d = ztest_random(ztest_opts.zo_datasets); 5675 ztest_dataset_destroy(d); 5676 } 5677 zs->zs_enospc_count = 0; 5678 5679 tid = umem_zalloc(ztest_opts.zo_threads * sizeof (thread_t), 5680 UMEM_NOFAIL); 5681 5682 if (ztest_opts.zo_verbose >= 4) 5683 (void) printf("starting main threads...\n"); 5684 5685 /* 5686 * Kick off all the tests that run in parallel. 5687 */ 5688 for (int t = 0; t < ztest_opts.zo_threads; t++) { 5689 if (t < ztest_opts.zo_datasets && 5690 ztest_dataset_open(t) != 0) 5691 return; 5692 VERIFY(thr_create(0, 0, ztest_thread, (void *)(uintptr_t)t, 5693 THR_BOUND, &tid[t]) == 0); 5694 } 5695 5696 /* 5697 * Wait for all of the tests to complete. We go in reverse order 5698 * so we don't close datasets while threads are still using them. 5699 */ 5700 for (int t = ztest_opts.zo_threads - 1; t >= 0; t--) { 5701 VERIFY(thr_join(tid[t], NULL, NULL) == 0); 5702 if (t < ztest_opts.zo_datasets) 5703 ztest_dataset_close(t); 5704 } 5705 5706 txg_wait_synced(spa_get_dsl(spa), 0); 5707 5708 zs->zs_alloc = metaslab_class_get_alloc(spa_normal_class(spa)); 5709 zs->zs_space = metaslab_class_get_space(spa_normal_class(spa)); 5710 zfs_dbgmsg_print(FTAG); 5711 5712 umem_free(tid, ztest_opts.zo_threads * sizeof (thread_t)); 5713 5714 /* Kill the resume thread */ 5715 ztest_exiting = B_TRUE; 5716 VERIFY(thr_join(resume_tid, NULL, NULL) == 0); 5717 ztest_resume(spa); 5718 5719 /* 5720 * Right before closing the pool, kick off a bunch of async I/O; 5721 * spa_close() should wait for it to complete. 5722 */ 5723 for (uint64_t object = 1; object < 50; object++) 5724 dmu_prefetch(spa->spa_meta_objset, object, 0, 1ULL << 20); 5725 5726 spa_close(spa, FTAG); 5727 5728 /* 5729 * Verify that we can loop over all pools. 5730 */ 5731 mutex_enter(&spa_namespace_lock); 5732 for (spa = spa_next(NULL); spa != NULL; spa = spa_next(spa)) 5733 if (ztest_opts.zo_verbose > 3) 5734 (void) printf("spa_next: found %s\n", spa_name(spa)); 5735 mutex_exit(&spa_namespace_lock); 5736 5737 /* 5738 * Verify that we can export the pool and reimport it under a 5739 * different name. 5740 */ 5741 if (ztest_random(2) == 0) { 5742 char name[MAXNAMELEN]; 5743 (void) snprintf(name, MAXNAMELEN, "%s_import", 5744 ztest_opts.zo_pool); 5745 ztest_spa_import_export(ztest_opts.zo_pool, name); 5746 ztest_spa_import_export(name, ztest_opts.zo_pool); 5747 } 5748 5749 kernel_fini(); 5750 5751 list_destroy(&zcl.zcl_callbacks); 5752 5753 (void) _mutex_destroy(&zcl.zcl_callbacks_lock); 5754 5755 (void) rwlock_destroy(&ztest_name_lock); 5756 (void) _mutex_destroy(&ztest_vdev_lock); 5757} 5758 5759static void 5760ztest_freeze(void) 5761{ 5762 ztest_ds_t *zd = &ztest_ds[0]; 5763 spa_t *spa; 5764 int numloops = 0; 5765 5766 if (ztest_opts.zo_verbose >= 3) 5767 (void) printf("testing spa_freeze()...\n"); 5768 5769 kernel_init(FREAD | FWRITE); 5770 VERIFY3U(0, ==, spa_open(ztest_opts.zo_pool, &spa, FTAG)); 5771 VERIFY3U(0, ==, ztest_dataset_open(0)); 5772 spa->spa_debug = B_TRUE; 5773 ztest_spa = spa; 5774 5775 /* 5776 * Force the first log block to be transactionally allocated. 5777 * We have to do this before we freeze the pool -- otherwise 5778 * the log chain won't be anchored. 5779 */ 5780 while (BP_IS_HOLE(&zd->zd_zilog->zl_header->zh_log)) { 5781 ztest_dmu_object_alloc_free(zd, 0); 5782 zil_commit(zd->zd_zilog, 0); 5783 } 5784 5785 txg_wait_synced(spa_get_dsl(spa), 0); 5786 5787 /* 5788 * Freeze the pool. This stops spa_sync() from doing anything, 5789 * so that the only way to record changes from now on is the ZIL. 5790 */ 5791 spa_freeze(spa); 5792 5793 /* 5794 * Because it is hard to predict how much space a write will actually 5795 * require beforehand, we leave ourselves some fudge space to write over 5796 * capacity. 5797 */ 5798 uint64_t capacity = metaslab_class_get_space(spa_normal_class(spa)) / 2; 5799 5800 /* 5801 * Run tests that generate log records but don't alter the pool config 5802 * or depend on DSL sync tasks (snapshots, objset create/destroy, etc). 5803 * We do a txg_wait_synced() after each iteration to force the txg 5804 * to increase well beyond the last synced value in the uberblock. 5805 * The ZIL should be OK with that. 5806 * 5807 * Run a random number of times less than zo_maxloops and ensure we do 5808 * not run out of space on the pool. 5809 */ 5810 while (ztest_random(10) != 0 && 5811 numloops++ < ztest_opts.zo_maxloops && 5812 metaslab_class_get_alloc(spa_normal_class(spa)) < capacity) { 5813 ztest_od_t od; 5814 ztest_od_init(&od, 0, FTAG, 0, DMU_OT_UINT64_OTHER, 0, 0); 5815 VERIFY0(ztest_object_init(zd, &od, sizeof (od), B_FALSE)); 5816 ztest_io(zd, od.od_object, 5817 ztest_random(ZTEST_RANGE_LOCKS) << SPA_MAXBLOCKSHIFT); 5818 txg_wait_synced(spa_get_dsl(spa), 0); 5819 } 5820 5821 /* 5822 * Commit all of the changes we just generated. 5823 */ 5824 zil_commit(zd->zd_zilog, 0); 5825 txg_wait_synced(spa_get_dsl(spa), 0); 5826 5827 /* 5828 * Close our dataset and close the pool. 5829 */ 5830 ztest_dataset_close(0); 5831 spa_close(spa, FTAG); 5832 kernel_fini(); 5833 5834 /* 5835 * Open and close the pool and dataset to induce log replay. 5836 */ 5837 kernel_init(FREAD | FWRITE); 5838 VERIFY3U(0, ==, spa_open(ztest_opts.zo_pool, &spa, FTAG)); 5839 ASSERT(spa_freeze_txg(spa) == UINT64_MAX); 5840 VERIFY3U(0, ==, ztest_dataset_open(0)); 5841 ztest_dataset_close(0); 5842 5843 spa->spa_debug = B_TRUE; 5844 ztest_spa = spa; 5845 txg_wait_synced(spa_get_dsl(spa), 0); 5846 ztest_reguid(NULL, 0); 5847 5848 spa_close(spa, FTAG); 5849 kernel_fini(); 5850} 5851 5852void 5853print_time(hrtime_t t, char *timebuf) 5854{ 5855 hrtime_t s = t / NANOSEC; 5856 hrtime_t m = s / 60; 5857 hrtime_t h = m / 60; 5858 hrtime_t d = h / 24; 5859 5860 s -= m * 60; 5861 m -= h * 60; 5862 h -= d * 24; 5863 5864 timebuf[0] = '\0'; 5865 5866 if (d) 5867 (void) sprintf(timebuf, 5868 "%llud%02lluh%02llum%02llus", d, h, m, s); 5869 else if (h) 5870 (void) sprintf(timebuf, "%lluh%02llum%02llus", h, m, s); 5871 else if (m) 5872 (void) sprintf(timebuf, "%llum%02llus", m, s); 5873 else 5874 (void) sprintf(timebuf, "%llus", s); 5875} 5876 5877static nvlist_t * 5878make_random_props() 5879{ 5880 nvlist_t *props; 5881 5882 VERIFY(nvlist_alloc(&props, NV_UNIQUE_NAME, 0) == 0); 5883 if (ztest_random(2) == 0) 5884 return (props); 5885 VERIFY(nvlist_add_uint64(props, "autoreplace", 1) == 0); 5886 5887 return (props); 5888} 5889 5890/* 5891 * Create a storage pool with the given name and initial vdev size. 5892 * Then test spa_freeze() functionality. 5893 */ 5894static void 5895ztest_init(ztest_shared_t *zs) 5896{ 5897 spa_t *spa; 5898 nvlist_t *nvroot, *props; 5899 5900 VERIFY(_mutex_init(&ztest_vdev_lock, USYNC_THREAD, NULL) == 0); 5901 VERIFY(rwlock_init(&ztest_name_lock, USYNC_THREAD, NULL) == 0); 5902 5903 kernel_init(FREAD | FWRITE); 5904 5905 /* 5906 * Create the storage pool. 5907 */ 5908 (void) spa_destroy(ztest_opts.zo_pool); 5909 ztest_shared->zs_vdev_next_leaf = 0; 5910 zs->zs_splits = 0; 5911 zs->zs_mirrors = ztest_opts.zo_mirrors; 5912 nvroot = make_vdev_root(NULL, NULL, NULL, ztest_opts.zo_vdev_size, 0, 5913 0, ztest_opts.zo_raidz, zs->zs_mirrors, 1); 5914 props = make_random_props(); 5915 for (int i = 0; i < SPA_FEATURES; i++) { 5916 char buf[1024]; 5917 (void) snprintf(buf, sizeof (buf), "feature@%s", 5918 spa_feature_table[i].fi_uname); 5919 VERIFY3U(0, ==, nvlist_add_uint64(props, buf, 0)); 5920 } 5921 VERIFY3U(0, ==, spa_create(ztest_opts.zo_pool, nvroot, props, NULL)); 5922 nvlist_free(nvroot); 5923 5924 VERIFY3U(0, ==, spa_open(ztest_opts.zo_pool, &spa, FTAG)); 5925 zs->zs_metaslab_sz = 5926 1ULL << spa->spa_root_vdev->vdev_child[0]->vdev_ms_shift; 5927 5928 spa_close(spa, FTAG); 5929 5930 kernel_fini(); 5931 5932 ztest_run_zdb(ztest_opts.zo_pool); 5933 5934 ztest_freeze(); 5935 5936 ztest_run_zdb(ztest_opts.zo_pool); 5937 5938 (void) rwlock_destroy(&ztest_name_lock); 5939 (void) _mutex_destroy(&ztest_vdev_lock); 5940} 5941 5942static void 5943setup_data_fd(void) 5944{ 5945 static char ztest_name_data[] = "/tmp/ztest.data.XXXXXX"; 5946 5947 ztest_fd_data = mkstemp(ztest_name_data); 5948 ASSERT3S(ztest_fd_data, >=, 0); 5949 (void) unlink(ztest_name_data); 5950} 5951 5952 5953static int 5954shared_data_size(ztest_shared_hdr_t *hdr) 5955{ 5956 int size; 5957 5958 size = hdr->zh_hdr_size; 5959 size += hdr->zh_opts_size; 5960 size += hdr->zh_size; 5961 size += hdr->zh_stats_size * hdr->zh_stats_count; 5962 size += hdr->zh_ds_size * hdr->zh_ds_count; 5963 5964 return (size); 5965} 5966 5967static void 5968setup_hdr(void) 5969{ 5970 int size; 5971 ztest_shared_hdr_t *hdr; 5972 5973 hdr = (void *)mmap(0, P2ROUNDUP(sizeof (*hdr), getpagesize()), 5974 PROT_READ | PROT_WRITE, MAP_SHARED, ztest_fd_data, 0); 5975 ASSERT(hdr != MAP_FAILED); 5976 5977 VERIFY3U(0, ==, ftruncate(ztest_fd_data, sizeof (ztest_shared_hdr_t))); 5978 5979 hdr->zh_hdr_size = sizeof (ztest_shared_hdr_t); 5980 hdr->zh_opts_size = sizeof (ztest_shared_opts_t); 5981 hdr->zh_size = sizeof (ztest_shared_t); 5982 hdr->zh_stats_size = sizeof (ztest_shared_callstate_t); 5983 hdr->zh_stats_count = ZTEST_FUNCS; 5984 hdr->zh_ds_size = sizeof (ztest_shared_ds_t); 5985 hdr->zh_ds_count = ztest_opts.zo_datasets; 5986 5987 size = shared_data_size(hdr); 5988 VERIFY3U(0, ==, ftruncate(ztest_fd_data, size)); 5989 5990 (void) munmap((caddr_t)hdr, P2ROUNDUP(sizeof (*hdr), getpagesize())); 5991} 5992 5993static void 5994setup_data(void) 5995{ 5996 int size, offset; 5997 ztest_shared_hdr_t *hdr; 5998 uint8_t *buf; 5999 6000 hdr = (void *)mmap(0, P2ROUNDUP(sizeof (*hdr), getpagesize()), 6001 PROT_READ, MAP_SHARED, ztest_fd_data, 0); 6002 ASSERT(hdr != MAP_FAILED); 6003 6004 size = shared_data_size(hdr); 6005 6006 (void) munmap((caddr_t)hdr, P2ROUNDUP(sizeof (*hdr), getpagesize())); 6007 hdr = ztest_shared_hdr = (void *)mmap(0, P2ROUNDUP(size, getpagesize()), 6008 PROT_READ | PROT_WRITE, MAP_SHARED, ztest_fd_data, 0); 6009 ASSERT(hdr != MAP_FAILED); 6010 buf = (uint8_t *)hdr; 6011 6012 offset = hdr->zh_hdr_size; 6013 ztest_shared_opts = (void *)&buf[offset]; 6014 offset += hdr->zh_opts_size; 6015 ztest_shared = (void *)&buf[offset]; 6016 offset += hdr->zh_size; 6017 ztest_shared_callstate = (void *)&buf[offset]; 6018 offset += hdr->zh_stats_size * hdr->zh_stats_count; 6019 ztest_shared_ds = (void *)&buf[offset]; 6020} 6021 6022static boolean_t 6023exec_child(char *cmd, char *libpath, boolean_t ignorekill, int *statusp) 6024{ 6025 pid_t pid; 6026 int status; 6027 char *cmdbuf = NULL; 6028 6029 pid = fork(); 6030 6031 if (cmd == NULL) { 6032 cmdbuf = umem_alloc(MAXPATHLEN, UMEM_NOFAIL); 6033 (void) strlcpy(cmdbuf, getexecname(), MAXPATHLEN); 6034 cmd = cmdbuf; 6035 } 6036 6037 if (pid == -1) 6038 fatal(1, "fork failed"); 6039 6040 if (pid == 0) { /* child */ 6041 char *emptyargv[2] = { cmd, NULL }; 6042 char fd_data_str[12]; 6043 6044 struct rlimit rl = { 1024, 1024 }; 6045 (void) setrlimit(RLIMIT_NOFILE, &rl); 6046 6047 (void) close(ztest_fd_rand); 6048 VERIFY3U(11, >=, 6049 snprintf(fd_data_str, 12, "%d", ztest_fd_data)); 6050 VERIFY0(setenv("ZTEST_FD_DATA", fd_data_str, 1)); 6051 6052 (void) enable_extended_FILE_stdio(-1, -1); 6053 if (libpath != NULL) 6054 VERIFY(0 == setenv("LD_LIBRARY_PATH", libpath, 1)); 6055#ifdef illumos 6056 (void) execv(cmd, emptyargv); 6057#else 6058 (void) execvp(cmd, emptyargv); 6059#endif 6060 ztest_dump_core = B_FALSE; 6061 fatal(B_TRUE, "exec failed: %s", cmd); 6062 } 6063 6064 if (cmdbuf != NULL) { 6065 umem_free(cmdbuf, MAXPATHLEN); 6066 cmd = NULL; 6067 } 6068 6069 while (waitpid(pid, &status, 0) != pid) 6070 continue; 6071 if (statusp != NULL) 6072 *statusp = status; 6073 6074 if (WIFEXITED(status)) { 6075 if (WEXITSTATUS(status) != 0) { 6076 (void) fprintf(stderr, "child exited with code %d\n", 6077 WEXITSTATUS(status)); 6078 exit(2); 6079 } 6080 return (B_FALSE); 6081 } else if (WIFSIGNALED(status)) { 6082 if (!ignorekill || WTERMSIG(status) != SIGKILL) { 6083 (void) fprintf(stderr, "child died with signal %d\n", 6084 WTERMSIG(status)); 6085 exit(3); 6086 } 6087 return (B_TRUE); 6088 } else { 6089 (void) fprintf(stderr, "something strange happened to child\n"); 6090 exit(4); 6091 /* NOTREACHED */ 6092 } 6093} 6094 6095static void 6096ztest_run_init(void) 6097{ 6098 ztest_shared_t *zs = ztest_shared; 6099 6100 ASSERT(ztest_opts.zo_init != 0); 6101 6102 /* 6103 * Blow away any existing copy of zpool.cache 6104 */ 6105 (void) remove(spa_config_path); 6106 6107 /* 6108 * Create and initialize our storage pool. 6109 */ 6110 for (int i = 1; i <= ztest_opts.zo_init; i++) { 6111 bzero(zs, sizeof (ztest_shared_t)); 6112 if (ztest_opts.zo_verbose >= 3 && 6113 ztest_opts.zo_init != 1) { 6114 (void) printf("ztest_init(), pass %d\n", i); 6115 } 6116 ztest_init(zs); 6117 } 6118} 6119 6120int 6121main(int argc, char **argv) 6122{ 6123 int kills = 0; 6124 int iters = 0; 6125 int older = 0; 6126 int newer = 0; 6127 ztest_shared_t *zs; 6128 ztest_info_t *zi; 6129 ztest_shared_callstate_t *zc; 6130 char timebuf[100]; 6131 char numbuf[6]; 6132 spa_t *spa; 6133 char *cmd; 6134 boolean_t hasalt; 6135 char *fd_data_str = getenv("ZTEST_FD_DATA"); 6136 6137 (void) setvbuf(stdout, NULL, _IOLBF, 0); 6138 6139 dprintf_setup(&argc, argv); 6140 zfs_deadman_synctime_ms = 300000; 6141 6142 ztest_fd_rand = open("/dev/urandom", O_RDONLY); 6143 ASSERT3S(ztest_fd_rand, >=, 0); 6144 6145 if (!fd_data_str) { 6146 process_options(argc, argv); 6147 6148 setup_data_fd(); 6149 setup_hdr(); 6150 setup_data(); 6151 bcopy(&ztest_opts, ztest_shared_opts, 6152 sizeof (*ztest_shared_opts)); 6153 } else { 6154 ztest_fd_data = atoi(fd_data_str); 6155 setup_data(); 6156 bcopy(ztest_shared_opts, &ztest_opts, sizeof (ztest_opts)); 6157 } 6158 ASSERT3U(ztest_opts.zo_datasets, ==, ztest_shared_hdr->zh_ds_count); 6159 6160 /* Override location of zpool.cache */ 6161 VERIFY3U(asprintf((char **)&spa_config_path, "%s/zpool.cache", 6162 ztest_opts.zo_dir), !=, -1); 6163 6164 ztest_ds = umem_alloc(ztest_opts.zo_datasets * sizeof (ztest_ds_t), 6165 UMEM_NOFAIL); 6166 zs = ztest_shared; 6167 6168 if (fd_data_str) { 6169 metaslab_gang_bang = ztest_opts.zo_metaslab_gang_bang; 6170 metaslab_df_alloc_threshold = 6171 zs->zs_metaslab_df_alloc_threshold; 6172 6173 if (zs->zs_do_init) 6174 ztest_run_init(); 6175 else 6176 ztest_run(zs); 6177 exit(0); 6178 } 6179 6180 hasalt = (strlen(ztest_opts.zo_alt_ztest) != 0); 6181 6182 if (ztest_opts.zo_verbose >= 1) { 6183 (void) printf("%llu vdevs, %d datasets, %d threads," 6184 " %llu seconds...\n", 6185 (u_longlong_t)ztest_opts.zo_vdevs, 6186 ztest_opts.zo_datasets, 6187 ztest_opts.zo_threads, 6188 (u_longlong_t)ztest_opts.zo_time); 6189 } 6190 6191 cmd = umem_alloc(MAXNAMELEN, UMEM_NOFAIL); 6192 (void) strlcpy(cmd, getexecname(), MAXNAMELEN); 6193 6194 zs->zs_do_init = B_TRUE; 6195 if (strlen(ztest_opts.zo_alt_ztest) != 0) { 6196 if (ztest_opts.zo_verbose >= 1) { 6197 (void) printf("Executing older ztest for " 6198 "initialization: %s\n", ztest_opts.zo_alt_ztest); 6199 } 6200 VERIFY(!exec_child(ztest_opts.zo_alt_ztest, 6201 ztest_opts.zo_alt_libpath, B_FALSE, NULL)); 6202 } else { 6203 VERIFY(!exec_child(NULL, NULL, B_FALSE, NULL)); 6204 } 6205 zs->zs_do_init = B_FALSE; 6206 6207 zs->zs_proc_start = gethrtime(); 6208 zs->zs_proc_stop = zs->zs_proc_start + ztest_opts.zo_time * NANOSEC; 6209 6210 for (int f = 0; f < ZTEST_FUNCS; f++) { 6211 zi = &ztest_info[f]; 6212 zc = ZTEST_GET_SHARED_CALLSTATE(f); 6213 if (zs->zs_proc_start + zi->zi_interval[0] > zs->zs_proc_stop) 6214 zc->zc_next = UINT64_MAX; 6215 else 6216 zc->zc_next = zs->zs_proc_start + 6217 ztest_random(2 * zi->zi_interval[0] + 1); 6218 } 6219 6220 /* 6221 * Run the tests in a loop. These tests include fault injection 6222 * to verify that self-healing data works, and forced crashes 6223 * to verify that we never lose on-disk consistency. 6224 */ 6225 while (gethrtime() < zs->zs_proc_stop) { 6226 int status; 6227 boolean_t killed; 6228 6229 /* 6230 * Initialize the workload counters for each function. 6231 */ 6232 for (int f = 0; f < ZTEST_FUNCS; f++) { 6233 zc = ZTEST_GET_SHARED_CALLSTATE(f); 6234 zc->zc_count = 0; 6235 zc->zc_time = 0; 6236 } 6237 6238 /* Set the allocation switch size */ 6239 zs->zs_metaslab_df_alloc_threshold = 6240 ztest_random(zs->zs_metaslab_sz / 4) + 1; 6241 6242 if (!hasalt || ztest_random(2) == 0) { 6243 if (hasalt && ztest_opts.zo_verbose >= 1) { 6244 (void) printf("Executing newer ztest: %s\n", 6245 cmd); 6246 } 6247 newer++; 6248 killed = exec_child(cmd, NULL, B_TRUE, &status); 6249 } else { 6250 if (hasalt && ztest_opts.zo_verbose >= 1) { 6251 (void) printf("Executing older ztest: %s\n", 6252 ztest_opts.zo_alt_ztest); 6253 } 6254 older++; 6255 killed = exec_child(ztest_opts.zo_alt_ztest, 6256 ztest_opts.zo_alt_libpath, B_TRUE, &status); 6257 } 6258 6259 if (killed) 6260 kills++; 6261 iters++; 6262 6263 if (ztest_opts.zo_verbose >= 1) { 6264 hrtime_t now = gethrtime(); 6265 6266 now = MIN(now, zs->zs_proc_stop); 6267 print_time(zs->zs_proc_stop - now, timebuf); 6268 nicenum(zs->zs_space, numbuf); 6269 6270 (void) printf("Pass %3d, %8s, %3llu ENOSPC, " 6271 "%4.1f%% of %5s used, %3.0f%% done, %8s to go\n", 6272 iters, 6273 WIFEXITED(status) ? "Complete" : "SIGKILL", 6274 (u_longlong_t)zs->zs_enospc_count, 6275 100.0 * zs->zs_alloc / zs->zs_space, 6276 numbuf, 6277 100.0 * (now - zs->zs_proc_start) / 6278 (ztest_opts.zo_time * NANOSEC), timebuf); 6279 } 6280 6281 if (ztest_opts.zo_verbose >= 2) { 6282 (void) printf("\nWorkload summary:\n\n"); 6283 (void) printf("%7s %9s %s\n", 6284 "Calls", "Time", "Function"); 6285 (void) printf("%7s %9s %s\n", 6286 "-----", "----", "--------"); 6287 for (int f = 0; f < ZTEST_FUNCS; f++) { 6288 Dl_info dli; 6289 6290 zi = &ztest_info[f]; 6291 zc = ZTEST_GET_SHARED_CALLSTATE(f); 6292 print_time(zc->zc_time, timebuf); 6293 (void) dladdr((void *)zi->zi_func, &dli); 6294 (void) printf("%7llu %9s %s\n", 6295 (u_longlong_t)zc->zc_count, timebuf, 6296 dli.dli_sname); 6297 } 6298 (void) printf("\n"); 6299 } 6300 6301 /* 6302 * It's possible that we killed a child during a rename test, 6303 * in which case we'll have a 'ztest_tmp' pool lying around 6304 * instead of 'ztest'. Do a blind rename in case this happened. 6305 */ 6306 kernel_init(FREAD); 6307 if (spa_open(ztest_opts.zo_pool, &spa, FTAG) == 0) { 6308 spa_close(spa, FTAG); 6309 } else { 6310 char tmpname[MAXNAMELEN]; 6311 kernel_fini(); 6312 kernel_init(FREAD | FWRITE); 6313 (void) snprintf(tmpname, sizeof (tmpname), "%s_tmp", 6314 ztest_opts.zo_pool); 6315 (void) spa_rename(tmpname, ztest_opts.zo_pool); 6316 } 6317 kernel_fini(); 6318 6319 ztest_run_zdb(ztest_opts.zo_pool); 6320 } 6321 6322 if (ztest_opts.zo_verbose >= 1) { 6323 if (hasalt) { 6324 (void) printf("%d runs of older ztest: %s\n", older, 6325 ztest_opts.zo_alt_ztest); 6326 (void) printf("%d runs of newer ztest: %s\n", newer, 6327 cmd); 6328 } 6329 (void) printf("%d killed, %d completed, %.0f%% kill rate\n", 6330 kills, iters - kills, (100.0 * kills) / MAX(1, iters)); 6331 } 6332 6333 umem_free(cmd, MAXNAMELEN); 6334 6335 return (0); 6336} 6337