ztest.c revision 326335
1/* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License (the "License"). 6 * You may not use this file except in compliance with the License. 7 * 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9 * or http://www.opensolaris.org/os/licensing. 10 * See the License for the specific language governing permissions 11 * and limitations under the License. 12 * 13 * When distributing Covered Code, include this CDDL HEADER in each 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15 * If applicable, add the following below this CDDL HEADER, with the 16 * fields enclosed by brackets "[]" replaced with your own identifying 17 * information: Portions Copyright [yyyy] [name of copyright owner] 18 * 19 * CDDL HEADER END 20 */ 21/* 22 * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved. 23 * Copyright (c) 2011, 2016 by Delphix. All rights reserved. 24 * Copyright 2011 Nexenta Systems, Inc. All rights reserved. 25 * Copyright (c) 2012 Martin Matuska <mm@FreeBSD.org>. All rights reserved. 26 * Copyright (c) 2013 Steven Hartland. All rights reserved. 27 * Copyright (c) 2014 Integros [integros.com] 28 * Copyright 2017 Joyent, Inc. 29 */ 30 31/* 32 * The objective of this program is to provide a DMU/ZAP/SPA stress test 33 * that runs entirely in userland, is easy to use, and easy to extend. 34 * 35 * The overall design of the ztest program is as follows: 36 * 37 * (1) For each major functional area (e.g. adding vdevs to a pool, 38 * creating and destroying datasets, reading and writing objects, etc) 39 * we have a simple routine to test that functionality. These 40 * individual routines do not have to do anything "stressful". 41 * 42 * (2) We turn these simple functionality tests into a stress test by 43 * running them all in parallel, with as many threads as desired, 44 * and spread across as many datasets, objects, and vdevs as desired. 45 * 46 * (3) While all this is happening, we inject faults into the pool to 47 * verify that self-healing data really works. 48 * 49 * (4) Every time we open a dataset, we change its checksum and compression 50 * functions. Thus even individual objects vary from block to block 51 * in which checksum they use and whether they're compressed. 52 * 53 * (5) To verify that we never lose on-disk consistency after a crash, 54 * we run the entire test in a child of the main process. 55 * At random times, the child self-immolates with a SIGKILL. 56 * This is the software equivalent of pulling the power cord. 57 * The parent then runs the test again, using the existing 58 * storage pool, as many times as desired. If backwards compatibility 59 * testing is enabled ztest will sometimes run the "older" version 60 * of ztest after a SIGKILL. 61 * 62 * (6) To verify that we don't have future leaks or temporal incursions, 63 * many of the functional tests record the transaction group number 64 * as part of their data. When reading old data, they verify that 65 * the transaction group number is less than the current, open txg. 66 * If you add a new test, please do this if applicable. 67 * 68 * When run with no arguments, ztest runs for about five minutes and 69 * produces no output if successful. To get a little bit of information, 70 * specify -V. To get more information, specify -VV, and so on. 71 * 72 * To turn this into an overnight stress test, use -T to specify run time. 73 * 74 * You can ask more more vdevs [-v], datasets [-d], or threads [-t] 75 * to increase the pool capacity, fanout, and overall stress level. 76 * 77 * Use the -k option to set the desired frequency of kills. 78 * 79 * When ztest invokes itself it passes all relevant information through a 80 * temporary file which is mmap-ed in the child process. This allows shared 81 * memory to survive the exec syscall. The ztest_shared_hdr_t struct is always 82 * stored at offset 0 of this file and contains information on the size and 83 * number of shared structures in the file. The information stored in this file 84 * must remain backwards compatible with older versions of ztest so that 85 * ztest can invoke them during backwards compatibility testing (-B). 86 */ 87 88#include <sys/zfs_context.h> 89#include <sys/spa.h> 90#include <sys/dmu.h> 91#include <sys/txg.h> 92#include <sys/dbuf.h> 93#include <sys/zap.h> 94#include <sys/dmu_objset.h> 95#include <sys/poll.h> 96#include <sys/stat.h> 97#include <sys/time.h> 98#include <sys/wait.h> 99#include <sys/mman.h> 100#include <sys/resource.h> 101#include <sys/zio.h> 102#include <sys/zil.h> 103#include <sys/zil_impl.h> 104#include <sys/vdev_impl.h> 105#include <sys/vdev_file.h> 106#include <sys/spa_impl.h> 107#include <sys/metaslab_impl.h> 108#include <sys/dsl_prop.h> 109#include <sys/dsl_dataset.h> 110#include <sys/dsl_destroy.h> 111#include <sys/dsl_scan.h> 112#include <sys/zio_checksum.h> 113#include <sys/refcount.h> 114#include <sys/zfeature.h> 115#include <sys/dsl_userhold.h> 116#include <stdio.h> 117#include <stdio_ext.h> 118#include <stdlib.h> 119#include <unistd.h> 120#include <signal.h> 121#include <umem.h> 122#include <dlfcn.h> 123#include <ctype.h> 124#include <math.h> 125#include <errno.h> 126#include <sys/fs/zfs.h> 127#include <libnvpair.h> 128#include <libcmdutils.h> 129 130static int ztest_fd_data = -1; 131static int ztest_fd_rand = -1; 132 133typedef struct ztest_shared_hdr { 134 uint64_t zh_hdr_size; 135 uint64_t zh_opts_size; 136 uint64_t zh_size; 137 uint64_t zh_stats_size; 138 uint64_t zh_stats_count; 139 uint64_t zh_ds_size; 140 uint64_t zh_ds_count; 141} ztest_shared_hdr_t; 142 143static ztest_shared_hdr_t *ztest_shared_hdr; 144 145typedef struct ztest_shared_opts { 146 char zo_pool[ZFS_MAX_DATASET_NAME_LEN]; 147 char zo_dir[ZFS_MAX_DATASET_NAME_LEN]; 148 char zo_alt_ztest[MAXNAMELEN]; 149 char zo_alt_libpath[MAXNAMELEN]; 150 uint64_t zo_vdevs; 151 uint64_t zo_vdevtime; 152 size_t zo_vdev_size; 153 int zo_ashift; 154 int zo_mirrors; 155 int zo_raidz; 156 int zo_raidz_parity; 157 int zo_datasets; 158 int zo_threads; 159 uint64_t zo_passtime; 160 uint64_t zo_killrate; 161 int zo_verbose; 162 int zo_init; 163 uint64_t zo_time; 164 uint64_t zo_maxloops; 165 uint64_t zo_metaslab_gang_bang; 166} ztest_shared_opts_t; 167 168static const ztest_shared_opts_t ztest_opts_defaults = { 169 .zo_pool = { 'z', 't', 'e', 's', 't', '\0' }, 170 .zo_dir = { '/', 't', 'm', 'p', '\0' }, 171 .zo_alt_ztest = { '\0' }, 172 .zo_alt_libpath = { '\0' }, 173 .zo_vdevs = 5, 174 .zo_ashift = SPA_MINBLOCKSHIFT, 175 .zo_mirrors = 2, 176 .zo_raidz = 4, 177 .zo_raidz_parity = 1, 178 .zo_vdev_size = SPA_MINDEVSIZE * 2, 179 .zo_datasets = 7, 180 .zo_threads = 23, 181 .zo_passtime = 60, /* 60 seconds */ 182 .zo_killrate = 70, /* 70% kill rate */ 183 .zo_verbose = 0, 184 .zo_init = 1, 185 .zo_time = 300, /* 5 minutes */ 186 .zo_maxloops = 50, /* max loops during spa_freeze() */ 187 .zo_metaslab_gang_bang = 32 << 10 188}; 189 190extern uint64_t metaslab_gang_bang; 191extern uint64_t metaslab_df_alloc_threshold; 192extern uint64_t zfs_deadman_synctime_ms; 193extern int metaslab_preload_limit; 194extern boolean_t zfs_compressed_arc_enabled; 195 196static ztest_shared_opts_t *ztest_shared_opts; 197static ztest_shared_opts_t ztest_opts; 198 199typedef struct ztest_shared_ds { 200 uint64_t zd_seq; 201} ztest_shared_ds_t; 202 203static ztest_shared_ds_t *ztest_shared_ds; 204#define ZTEST_GET_SHARED_DS(d) (&ztest_shared_ds[d]) 205 206#define BT_MAGIC 0x123456789abcdefULL 207#define MAXFAULTS() \ 208 (MAX(zs->zs_mirrors, 1) * (ztest_opts.zo_raidz_parity + 1) - 1) 209 210enum ztest_io_type { 211 ZTEST_IO_WRITE_TAG, 212 ZTEST_IO_WRITE_PATTERN, 213 ZTEST_IO_WRITE_ZEROES, 214 ZTEST_IO_TRUNCATE, 215 ZTEST_IO_SETATTR, 216 ZTEST_IO_REWRITE, 217 ZTEST_IO_TYPES 218}; 219 220typedef struct ztest_block_tag { 221 uint64_t bt_magic; 222 uint64_t bt_objset; 223 uint64_t bt_object; 224 uint64_t bt_offset; 225 uint64_t bt_gen; 226 uint64_t bt_txg; 227 uint64_t bt_crtxg; 228} ztest_block_tag_t; 229 230typedef struct bufwad { 231 uint64_t bw_index; 232 uint64_t bw_txg; 233 uint64_t bw_data; 234} bufwad_t; 235 236/* 237 * XXX -- fix zfs range locks to be generic so we can use them here. 238 */ 239typedef enum { 240 RL_READER, 241 RL_WRITER, 242 RL_APPEND 243} rl_type_t; 244 245typedef struct rll { 246 void *rll_writer; 247 int rll_readers; 248 mutex_t rll_lock; 249 cond_t rll_cv; 250} rll_t; 251 252typedef struct rl { 253 uint64_t rl_object; 254 uint64_t rl_offset; 255 uint64_t rl_size; 256 rll_t *rl_lock; 257} rl_t; 258 259#define ZTEST_RANGE_LOCKS 64 260#define ZTEST_OBJECT_LOCKS 64 261 262/* 263 * Object descriptor. Used as a template for object lookup/create/remove. 264 */ 265typedef struct ztest_od { 266 uint64_t od_dir; 267 uint64_t od_object; 268 dmu_object_type_t od_type; 269 dmu_object_type_t od_crtype; 270 uint64_t od_blocksize; 271 uint64_t od_crblocksize; 272 uint64_t od_gen; 273 uint64_t od_crgen; 274 char od_name[ZFS_MAX_DATASET_NAME_LEN]; 275} ztest_od_t; 276 277/* 278 * Per-dataset state. 279 */ 280typedef struct ztest_ds { 281 ztest_shared_ds_t *zd_shared; 282 objset_t *zd_os; 283 rwlock_t zd_zilog_lock; 284 zilog_t *zd_zilog; 285 ztest_od_t *zd_od; /* debugging aid */ 286 char zd_name[ZFS_MAX_DATASET_NAME_LEN]; 287 mutex_t zd_dirobj_lock; 288 rll_t zd_object_lock[ZTEST_OBJECT_LOCKS]; 289 rll_t zd_range_lock[ZTEST_RANGE_LOCKS]; 290} ztest_ds_t; 291 292/* 293 * Per-iteration state. 294 */ 295typedef void ztest_func_t(ztest_ds_t *zd, uint64_t id); 296 297typedef struct ztest_info { 298 ztest_func_t *zi_func; /* test function */ 299 uint64_t zi_iters; /* iterations per execution */ 300 uint64_t *zi_interval; /* execute every <interval> seconds */ 301} ztest_info_t; 302 303typedef struct ztest_shared_callstate { 304 uint64_t zc_count; /* per-pass count */ 305 uint64_t zc_time; /* per-pass time */ 306 uint64_t zc_next; /* next time to call this function */ 307} ztest_shared_callstate_t; 308 309static ztest_shared_callstate_t *ztest_shared_callstate; 310#define ZTEST_GET_SHARED_CALLSTATE(c) (&ztest_shared_callstate[c]) 311 312/* 313 * Note: these aren't static because we want dladdr() to work. 314 */ 315ztest_func_t ztest_dmu_read_write; 316ztest_func_t ztest_dmu_write_parallel; 317ztest_func_t ztest_dmu_object_alloc_free; 318ztest_func_t ztest_dmu_commit_callbacks; 319ztest_func_t ztest_zap; 320ztest_func_t ztest_zap_parallel; 321ztest_func_t ztest_zil_commit; 322ztest_func_t ztest_zil_remount; 323ztest_func_t ztest_dmu_read_write_zcopy; 324ztest_func_t ztest_dmu_objset_create_destroy; 325ztest_func_t ztest_dmu_prealloc; 326ztest_func_t ztest_fzap; 327ztest_func_t ztest_dmu_snapshot_create_destroy; 328ztest_func_t ztest_dsl_prop_get_set; 329ztest_func_t ztest_spa_prop_get_set; 330ztest_func_t ztest_spa_create_destroy; 331ztest_func_t ztest_fault_inject; 332ztest_func_t ztest_ddt_repair; 333ztest_func_t ztest_dmu_snapshot_hold; 334ztest_func_t ztest_spa_rename; 335ztest_func_t ztest_scrub; 336ztest_func_t ztest_dsl_dataset_promote_busy; 337ztest_func_t ztest_vdev_attach_detach; 338ztest_func_t ztest_vdev_LUN_growth; 339ztest_func_t ztest_vdev_add_remove; 340ztest_func_t ztest_vdev_aux_add_remove; 341ztest_func_t ztest_split_pool; 342ztest_func_t ztest_reguid; 343ztest_func_t ztest_spa_upgrade; 344 345uint64_t zopt_always = 0ULL * NANOSEC; /* all the time */ 346uint64_t zopt_incessant = 1ULL * NANOSEC / 10; /* every 1/10 second */ 347uint64_t zopt_often = 1ULL * NANOSEC; /* every second */ 348uint64_t zopt_sometimes = 10ULL * NANOSEC; /* every 10 seconds */ 349uint64_t zopt_rarely = 60ULL * NANOSEC; /* every 60 seconds */ 350 351ztest_info_t ztest_info[] = { 352 { ztest_dmu_read_write, 1, &zopt_always }, 353 { ztest_dmu_write_parallel, 10, &zopt_always }, 354 { ztest_dmu_object_alloc_free, 1, &zopt_always }, 355 { ztest_dmu_commit_callbacks, 1, &zopt_always }, 356 { ztest_zap, 30, &zopt_always }, 357 { ztest_zap_parallel, 100, &zopt_always }, 358 { ztest_split_pool, 1, &zopt_always }, 359 { ztest_zil_commit, 1, &zopt_incessant }, 360 { ztest_zil_remount, 1, &zopt_sometimes }, 361 { ztest_dmu_read_write_zcopy, 1, &zopt_often }, 362 { ztest_dmu_objset_create_destroy, 1, &zopt_often }, 363 { ztest_dsl_prop_get_set, 1, &zopt_often }, 364 { ztest_spa_prop_get_set, 1, &zopt_sometimes }, 365#if 0 366 { ztest_dmu_prealloc, 1, &zopt_sometimes }, 367#endif 368 { ztest_fzap, 1, &zopt_sometimes }, 369 { ztest_dmu_snapshot_create_destroy, 1, &zopt_sometimes }, 370 { ztest_spa_create_destroy, 1, &zopt_sometimes }, 371 { ztest_fault_inject, 1, &zopt_sometimes }, 372 { ztest_ddt_repair, 1, &zopt_sometimes }, 373 { ztest_dmu_snapshot_hold, 1, &zopt_sometimes }, 374 { ztest_reguid, 1, &zopt_rarely }, 375 { ztest_spa_rename, 1, &zopt_rarely }, 376 { ztest_scrub, 1, &zopt_rarely }, 377 { ztest_spa_upgrade, 1, &zopt_rarely }, 378 { ztest_dsl_dataset_promote_busy, 1, &zopt_rarely }, 379 { ztest_vdev_attach_detach, 1, &zopt_sometimes }, 380 { ztest_vdev_LUN_growth, 1, &zopt_rarely }, 381 { ztest_vdev_add_remove, 1, 382 &ztest_opts.zo_vdevtime }, 383 { ztest_vdev_aux_add_remove, 1, 384 &ztest_opts.zo_vdevtime }, 385}; 386 387#define ZTEST_FUNCS (sizeof (ztest_info) / sizeof (ztest_info_t)) 388 389/* 390 * The following struct is used to hold a list of uncalled commit callbacks. 391 * The callbacks are ordered by txg number. 392 */ 393typedef struct ztest_cb_list { 394 mutex_t zcl_callbacks_lock; 395 list_t zcl_callbacks; 396} ztest_cb_list_t; 397 398/* 399 * Stuff we need to share writably between parent and child. 400 */ 401typedef struct ztest_shared { 402 boolean_t zs_do_init; 403 hrtime_t zs_proc_start; 404 hrtime_t zs_proc_stop; 405 hrtime_t zs_thread_start; 406 hrtime_t zs_thread_stop; 407 hrtime_t zs_thread_kill; 408 uint64_t zs_enospc_count; 409 uint64_t zs_vdev_next_leaf; 410 uint64_t zs_vdev_aux; 411 uint64_t zs_alloc; 412 uint64_t zs_space; 413 uint64_t zs_splits; 414 uint64_t zs_mirrors; 415 uint64_t zs_metaslab_sz; 416 uint64_t zs_metaslab_df_alloc_threshold; 417 uint64_t zs_guid; 418} ztest_shared_t; 419 420#define ID_PARALLEL -1ULL 421 422static char ztest_dev_template[] = "%s/%s.%llua"; 423static char ztest_aux_template[] = "%s/%s.%s.%llu"; 424ztest_shared_t *ztest_shared; 425 426static spa_t *ztest_spa = NULL; 427static ztest_ds_t *ztest_ds; 428 429static mutex_t ztest_vdev_lock; 430 431/* 432 * The ztest_name_lock protects the pool and dataset namespace used by 433 * the individual tests. To modify the namespace, consumers must grab 434 * this lock as writer. Grabbing the lock as reader will ensure that the 435 * namespace does not change while the lock is held. 436 */ 437static rwlock_t ztest_name_lock; 438 439static boolean_t ztest_dump_core = B_TRUE; 440static boolean_t ztest_exiting; 441 442/* Global commit callback list */ 443static ztest_cb_list_t zcl; 444 445enum ztest_object { 446 ZTEST_META_DNODE = 0, 447 ZTEST_DIROBJ, 448 ZTEST_OBJECTS 449}; 450 451static void usage(boolean_t) __NORETURN; 452 453/* 454 * These libumem hooks provide a reasonable set of defaults for the allocator's 455 * debugging facilities. 456 */ 457const char * 458_umem_debug_init() 459{ 460 return ("default,verbose"); /* $UMEM_DEBUG setting */ 461} 462 463const char * 464_umem_logging_init(void) 465{ 466 return ("fail,contents"); /* $UMEM_LOGGING setting */ 467} 468 469#define FATAL_MSG_SZ 1024 470 471char *fatal_msg; 472 473static void 474fatal(int do_perror, char *message, ...) 475{ 476 va_list args; 477 int save_errno = errno; 478 char buf[FATAL_MSG_SZ]; 479 480 (void) fflush(stdout); 481 482 va_start(args, message); 483 (void) sprintf(buf, "ztest: "); 484 /* LINTED */ 485 (void) vsprintf(buf + strlen(buf), message, args); 486 va_end(args); 487 if (do_perror) { 488 (void) snprintf(buf + strlen(buf), FATAL_MSG_SZ - strlen(buf), 489 ": %s", strerror(save_errno)); 490 } 491 (void) fprintf(stderr, "%s\n", buf); 492 fatal_msg = buf; /* to ease debugging */ 493 if (ztest_dump_core) 494 abort(); 495 exit(3); 496} 497 498static int 499str2shift(const char *buf) 500{ 501 const char *ends = "BKMGTPEZ"; 502 int i; 503 504 if (buf[0] == '\0') 505 return (0); 506 for (i = 0; i < strlen(ends); i++) { 507 if (toupper(buf[0]) == ends[i]) 508 break; 509 } 510 if (i == strlen(ends)) { 511 (void) fprintf(stderr, "ztest: invalid bytes suffix: %s\n", 512 buf); 513 usage(B_FALSE); 514 } 515 if (buf[1] == '\0' || (toupper(buf[1]) == 'B' && buf[2] == '\0')) { 516 return (10*i); 517 } 518 (void) fprintf(stderr, "ztest: invalid bytes suffix: %s\n", buf); 519 usage(B_FALSE); 520 /* NOTREACHED */ 521} 522 523static uint64_t 524nicenumtoull(const char *buf) 525{ 526 char *end; 527 uint64_t val; 528 529 val = strtoull(buf, &end, 0); 530 if (end == buf) { 531 (void) fprintf(stderr, "ztest: bad numeric value: %s\n", buf); 532 usage(B_FALSE); 533 } else if (end[0] == '.') { 534 double fval = strtod(buf, &end); 535 fval *= pow(2, str2shift(end)); 536 if (fval > UINT64_MAX) { 537 (void) fprintf(stderr, "ztest: value too large: %s\n", 538 buf); 539 usage(B_FALSE); 540 } 541 val = (uint64_t)fval; 542 } else { 543 int shift = str2shift(end); 544 if (shift >= 64 || (val << shift) >> shift != val) { 545 (void) fprintf(stderr, "ztest: value too large: %s\n", 546 buf); 547 usage(B_FALSE); 548 } 549 val <<= shift; 550 } 551 return (val); 552} 553 554static void 555usage(boolean_t requested) 556{ 557 const ztest_shared_opts_t *zo = &ztest_opts_defaults; 558 559 char nice_vdev_size[NN_NUMBUF_SZ]; 560 char nice_gang_bang[NN_NUMBUF_SZ]; 561 FILE *fp = requested ? stdout : stderr; 562 563 nicenum(zo->zo_vdev_size, nice_vdev_size, sizeof (nice_vdev_size)); 564 nicenum(zo->zo_metaslab_gang_bang, nice_gang_bang, 565 sizeof (nice_gang_bang)); 566 567 (void) fprintf(fp, "Usage: %s\n" 568 "\t[-v vdevs (default: %llu)]\n" 569 "\t[-s size_of_each_vdev (default: %s)]\n" 570 "\t[-a alignment_shift (default: %d)] use 0 for random\n" 571 "\t[-m mirror_copies (default: %d)]\n" 572 "\t[-r raidz_disks (default: %d)]\n" 573 "\t[-R raidz_parity (default: %d)]\n" 574 "\t[-d datasets (default: %d)]\n" 575 "\t[-t threads (default: %d)]\n" 576 "\t[-g gang_block_threshold (default: %s)]\n" 577 "\t[-i init_count (default: %d)] initialize pool i times\n" 578 "\t[-k kill_percentage (default: %llu%%)]\n" 579 "\t[-p pool_name (default: %s)]\n" 580 "\t[-f dir (default: %s)] file directory for vdev files\n" 581 "\t[-V] verbose (use multiple times for ever more blather)\n" 582 "\t[-E] use existing pool instead of creating new one\n" 583 "\t[-T time (default: %llu sec)] total run time\n" 584 "\t[-F freezeloops (default: %llu)] max loops in spa_freeze()\n" 585 "\t[-P passtime (default: %llu sec)] time per pass\n" 586 "\t[-B alt_ztest (default: <none>)] alternate ztest path\n" 587 "\t[-o variable=value] ... set global variable to an unsigned\n" 588 "\t 32-bit integer value\n" 589 "\t[-h] (print help)\n" 590 "", 591 zo->zo_pool, 592 (u_longlong_t)zo->zo_vdevs, /* -v */ 593 nice_vdev_size, /* -s */ 594 zo->zo_ashift, /* -a */ 595 zo->zo_mirrors, /* -m */ 596 zo->zo_raidz, /* -r */ 597 zo->zo_raidz_parity, /* -R */ 598 zo->zo_datasets, /* -d */ 599 zo->zo_threads, /* -t */ 600 nice_gang_bang, /* -g */ 601 zo->zo_init, /* -i */ 602 (u_longlong_t)zo->zo_killrate, /* -k */ 603 zo->zo_pool, /* -p */ 604 zo->zo_dir, /* -f */ 605 (u_longlong_t)zo->zo_time, /* -T */ 606 (u_longlong_t)zo->zo_maxloops, /* -F */ 607 (u_longlong_t)zo->zo_passtime); 608 exit(requested ? 0 : 1); 609} 610 611static void 612process_options(int argc, char **argv) 613{ 614 char *path; 615 ztest_shared_opts_t *zo = &ztest_opts; 616 617 int opt; 618 uint64_t value; 619 char altdir[MAXNAMELEN] = { 0 }; 620 621 bcopy(&ztest_opts_defaults, zo, sizeof (*zo)); 622 623 while ((opt = getopt(argc, argv, 624 "v:s:a:m:r:R:d:t:g:i:k:p:f:VET:P:hF:B:o:")) != EOF) { 625 value = 0; 626 switch (opt) { 627 case 'v': 628 case 's': 629 case 'a': 630 case 'm': 631 case 'r': 632 case 'R': 633 case 'd': 634 case 't': 635 case 'g': 636 case 'i': 637 case 'k': 638 case 'T': 639 case 'P': 640 case 'F': 641 value = nicenumtoull(optarg); 642 } 643 switch (opt) { 644 case 'v': 645 zo->zo_vdevs = value; 646 break; 647 case 's': 648 zo->zo_vdev_size = MAX(SPA_MINDEVSIZE, value); 649 break; 650 case 'a': 651 zo->zo_ashift = value; 652 break; 653 case 'm': 654 zo->zo_mirrors = value; 655 break; 656 case 'r': 657 zo->zo_raidz = MAX(1, value); 658 break; 659 case 'R': 660 zo->zo_raidz_parity = MIN(MAX(value, 1), 3); 661 break; 662 case 'd': 663 zo->zo_datasets = MAX(1, value); 664 break; 665 case 't': 666 zo->zo_threads = MAX(1, value); 667 break; 668 case 'g': 669 zo->zo_metaslab_gang_bang = MAX(SPA_MINBLOCKSIZE << 1, 670 value); 671 break; 672 case 'i': 673 zo->zo_init = value; 674 break; 675 case 'k': 676 zo->zo_killrate = value; 677 break; 678 case 'p': 679 (void) strlcpy(zo->zo_pool, optarg, 680 sizeof (zo->zo_pool)); 681 break; 682 case 'f': 683 path = realpath(optarg, NULL); 684 if (path == NULL) { 685 (void) fprintf(stderr, "error: %s: %s\n", 686 optarg, strerror(errno)); 687 usage(B_FALSE); 688 } else { 689 (void) strlcpy(zo->zo_dir, path, 690 sizeof (zo->zo_dir)); 691 } 692 break; 693 case 'V': 694 zo->zo_verbose++; 695 break; 696 case 'E': 697 zo->zo_init = 0; 698 break; 699 case 'T': 700 zo->zo_time = value; 701 break; 702 case 'P': 703 zo->zo_passtime = MAX(1, value); 704 break; 705 case 'F': 706 zo->zo_maxloops = MAX(1, value); 707 break; 708 case 'B': 709 (void) strlcpy(altdir, optarg, sizeof (altdir)); 710 break; 711 case 'o': 712 if (set_global_var(optarg) != 0) 713 usage(B_FALSE); 714 break; 715 case 'h': 716 usage(B_TRUE); 717 break; 718 case '?': 719 default: 720 usage(B_FALSE); 721 break; 722 } 723 } 724 725 zo->zo_raidz_parity = MIN(zo->zo_raidz_parity, zo->zo_raidz - 1); 726 727 zo->zo_vdevtime = 728 (zo->zo_vdevs > 0 ? zo->zo_time * NANOSEC / zo->zo_vdevs : 729 UINT64_MAX >> 2); 730 731 if (strlen(altdir) > 0) { 732 char *cmd; 733 char *realaltdir; 734 char *bin; 735 char *ztest; 736 char *isa; 737 int isalen; 738 739 cmd = umem_alloc(MAXPATHLEN, UMEM_NOFAIL); 740 realaltdir = umem_alloc(MAXPATHLEN, UMEM_NOFAIL); 741 742 VERIFY(NULL != realpath(getexecname(), cmd)); 743 if (0 != access(altdir, F_OK)) { 744 ztest_dump_core = B_FALSE; 745 fatal(B_TRUE, "invalid alternate ztest path: %s", 746 altdir); 747 } 748 VERIFY(NULL != realpath(altdir, realaltdir)); 749 750 /* 751 * 'cmd' should be of the form "<anything>/usr/bin/<isa>/ztest". 752 * We want to extract <isa> to determine if we should use 753 * 32 or 64 bit binaries. 754 */ 755 bin = strstr(cmd, "/usr/bin/"); 756 ztest = strstr(bin, "/ztest"); 757 isa = bin + 9; 758 isalen = ztest - isa; 759 (void) snprintf(zo->zo_alt_ztest, sizeof (zo->zo_alt_ztest), 760 "%s/usr/bin/%.*s/ztest", realaltdir, isalen, isa); 761 (void) snprintf(zo->zo_alt_libpath, sizeof (zo->zo_alt_libpath), 762 "%s/usr/lib/%.*s", realaltdir, isalen, isa); 763 764 if (0 != access(zo->zo_alt_ztest, X_OK)) { 765 ztest_dump_core = B_FALSE; 766 fatal(B_TRUE, "invalid alternate ztest: %s", 767 zo->zo_alt_ztest); 768 } else if (0 != access(zo->zo_alt_libpath, X_OK)) { 769 ztest_dump_core = B_FALSE; 770 fatal(B_TRUE, "invalid alternate lib directory %s", 771 zo->zo_alt_libpath); 772 } 773 774 umem_free(cmd, MAXPATHLEN); 775 umem_free(realaltdir, MAXPATHLEN); 776 } 777} 778 779static void 780ztest_kill(ztest_shared_t *zs) 781{ 782 zs->zs_alloc = metaslab_class_get_alloc(spa_normal_class(ztest_spa)); 783 zs->zs_space = metaslab_class_get_space(spa_normal_class(ztest_spa)); 784 785 /* 786 * Before we kill off ztest, make sure that the config is updated. 787 * See comment above spa_config_sync(). 788 */ 789 mutex_enter(&spa_namespace_lock); 790 spa_config_sync(ztest_spa, B_FALSE, B_FALSE); 791 mutex_exit(&spa_namespace_lock); 792 793 zfs_dbgmsg_print(FTAG); 794 (void) kill(getpid(), SIGKILL); 795} 796 797static uint64_t 798ztest_random(uint64_t range) 799{ 800 uint64_t r; 801 802 ASSERT3S(ztest_fd_rand, >=, 0); 803 804 if (range == 0) 805 return (0); 806 807 if (read(ztest_fd_rand, &r, sizeof (r)) != sizeof (r)) 808 fatal(1, "short read from /dev/urandom"); 809 810 return (r % range); 811} 812 813/* ARGSUSED */ 814static void 815ztest_record_enospc(const char *s) 816{ 817 ztest_shared->zs_enospc_count++; 818} 819 820static uint64_t 821ztest_get_ashift(void) 822{ 823 if (ztest_opts.zo_ashift == 0) 824 return (SPA_MINBLOCKSHIFT + ztest_random(5)); 825 return (ztest_opts.zo_ashift); 826} 827 828static nvlist_t * 829make_vdev_file(char *path, char *aux, char *pool, size_t size, uint64_t ashift) 830{ 831 char pathbuf[MAXPATHLEN]; 832 uint64_t vdev; 833 nvlist_t *file; 834 835 if (ashift == 0) 836 ashift = ztest_get_ashift(); 837 838 if (path == NULL) { 839 path = pathbuf; 840 841 if (aux != NULL) { 842 vdev = ztest_shared->zs_vdev_aux; 843 (void) snprintf(path, sizeof (pathbuf), 844 ztest_aux_template, ztest_opts.zo_dir, 845 pool == NULL ? ztest_opts.zo_pool : pool, 846 aux, vdev); 847 } else { 848 vdev = ztest_shared->zs_vdev_next_leaf++; 849 (void) snprintf(path, sizeof (pathbuf), 850 ztest_dev_template, ztest_opts.zo_dir, 851 pool == NULL ? ztest_opts.zo_pool : pool, vdev); 852 } 853 } 854 855 if (size != 0) { 856 int fd = open(path, O_RDWR | O_CREAT | O_TRUNC, 0666); 857 if (fd == -1) 858 fatal(1, "can't open %s", path); 859 if (ftruncate(fd, size) != 0) 860 fatal(1, "can't ftruncate %s", path); 861 (void) close(fd); 862 } 863 864 VERIFY(nvlist_alloc(&file, NV_UNIQUE_NAME, 0) == 0); 865 VERIFY(nvlist_add_string(file, ZPOOL_CONFIG_TYPE, VDEV_TYPE_FILE) == 0); 866 VERIFY(nvlist_add_string(file, ZPOOL_CONFIG_PATH, path) == 0); 867 VERIFY(nvlist_add_uint64(file, ZPOOL_CONFIG_ASHIFT, ashift) == 0); 868 869 return (file); 870} 871 872static nvlist_t * 873make_vdev_raidz(char *path, char *aux, char *pool, size_t size, 874 uint64_t ashift, int r) 875{ 876 nvlist_t *raidz, **child; 877 int c; 878 879 if (r < 2) 880 return (make_vdev_file(path, aux, pool, size, ashift)); 881 child = umem_alloc(r * sizeof (nvlist_t *), UMEM_NOFAIL); 882 883 for (c = 0; c < r; c++) 884 child[c] = make_vdev_file(path, aux, pool, size, ashift); 885 886 VERIFY(nvlist_alloc(&raidz, NV_UNIQUE_NAME, 0) == 0); 887 VERIFY(nvlist_add_string(raidz, ZPOOL_CONFIG_TYPE, 888 VDEV_TYPE_RAIDZ) == 0); 889 VERIFY(nvlist_add_uint64(raidz, ZPOOL_CONFIG_NPARITY, 890 ztest_opts.zo_raidz_parity) == 0); 891 VERIFY(nvlist_add_nvlist_array(raidz, ZPOOL_CONFIG_CHILDREN, 892 child, r) == 0); 893 894 for (c = 0; c < r; c++) 895 nvlist_free(child[c]); 896 897 umem_free(child, r * sizeof (nvlist_t *)); 898 899 return (raidz); 900} 901 902static nvlist_t * 903make_vdev_mirror(char *path, char *aux, char *pool, size_t size, 904 uint64_t ashift, int r, int m) 905{ 906 nvlist_t *mirror, **child; 907 int c; 908 909 if (m < 1) 910 return (make_vdev_raidz(path, aux, pool, size, ashift, r)); 911 912 child = umem_alloc(m * sizeof (nvlist_t *), UMEM_NOFAIL); 913 914 for (c = 0; c < m; c++) 915 child[c] = make_vdev_raidz(path, aux, pool, size, ashift, r); 916 917 VERIFY(nvlist_alloc(&mirror, NV_UNIQUE_NAME, 0) == 0); 918 VERIFY(nvlist_add_string(mirror, ZPOOL_CONFIG_TYPE, 919 VDEV_TYPE_MIRROR) == 0); 920 VERIFY(nvlist_add_nvlist_array(mirror, ZPOOL_CONFIG_CHILDREN, 921 child, m) == 0); 922 923 for (c = 0; c < m; c++) 924 nvlist_free(child[c]); 925 926 umem_free(child, m * sizeof (nvlist_t *)); 927 928 return (mirror); 929} 930 931static nvlist_t * 932make_vdev_root(char *path, char *aux, char *pool, size_t size, uint64_t ashift, 933 int log, int r, int m, int t) 934{ 935 nvlist_t *root, **child; 936 int c; 937 938 ASSERT(t > 0); 939 940 child = umem_alloc(t * sizeof (nvlist_t *), UMEM_NOFAIL); 941 942 for (c = 0; c < t; c++) { 943 child[c] = make_vdev_mirror(path, aux, pool, size, ashift, 944 r, m); 945 VERIFY(nvlist_add_uint64(child[c], ZPOOL_CONFIG_IS_LOG, 946 log) == 0); 947 } 948 949 VERIFY(nvlist_alloc(&root, NV_UNIQUE_NAME, 0) == 0); 950 VERIFY(nvlist_add_string(root, ZPOOL_CONFIG_TYPE, VDEV_TYPE_ROOT) == 0); 951 VERIFY(nvlist_add_nvlist_array(root, aux ? aux : ZPOOL_CONFIG_CHILDREN, 952 child, t) == 0); 953 954 for (c = 0; c < t; c++) 955 nvlist_free(child[c]); 956 957 umem_free(child, t * sizeof (nvlist_t *)); 958 959 return (root); 960} 961 962/* 963 * Find a random spa version. Returns back a random spa version in the 964 * range [initial_version, SPA_VERSION_FEATURES]. 965 */ 966static uint64_t 967ztest_random_spa_version(uint64_t initial_version) 968{ 969 uint64_t version = initial_version; 970 971 if (version <= SPA_VERSION_BEFORE_FEATURES) { 972 version = version + 973 ztest_random(SPA_VERSION_BEFORE_FEATURES - version + 1); 974 } 975 976 if (version > SPA_VERSION_BEFORE_FEATURES) 977 version = SPA_VERSION_FEATURES; 978 979 ASSERT(SPA_VERSION_IS_SUPPORTED(version)); 980 return (version); 981} 982 983static int 984ztest_random_blocksize(void) 985{ 986 uint64_t block_shift; 987 /* 988 * Choose a block size >= the ashift. 989 * If the SPA supports new MAXBLOCKSIZE, test up to 1MB blocks. 990 */ 991 int maxbs = SPA_OLD_MAXBLOCKSHIFT; 992 if (spa_maxblocksize(ztest_spa) == SPA_MAXBLOCKSIZE) 993 maxbs = 20; 994 block_shift = ztest_random(maxbs - ztest_spa->spa_max_ashift + 1); 995 return (1 << (SPA_MINBLOCKSHIFT + block_shift)); 996} 997 998static int 999ztest_random_ibshift(void) 1000{ 1001 return (DN_MIN_INDBLKSHIFT + 1002 ztest_random(DN_MAX_INDBLKSHIFT - DN_MIN_INDBLKSHIFT + 1)); 1003} 1004 1005static uint64_t 1006ztest_random_vdev_top(spa_t *spa, boolean_t log_ok) 1007{ 1008 uint64_t top; 1009 vdev_t *rvd = spa->spa_root_vdev; 1010 vdev_t *tvd; 1011 1012 ASSERT(spa_config_held(spa, SCL_ALL, RW_READER) != 0); 1013 1014 do { 1015 top = ztest_random(rvd->vdev_children); 1016 tvd = rvd->vdev_child[top]; 1017 } while (tvd->vdev_ishole || (tvd->vdev_islog && !log_ok) || 1018 tvd->vdev_mg == NULL || tvd->vdev_mg->mg_class == NULL); 1019 1020 return (top); 1021} 1022 1023static uint64_t 1024ztest_random_dsl_prop(zfs_prop_t prop) 1025{ 1026 uint64_t value; 1027 1028 do { 1029 value = zfs_prop_random_value(prop, ztest_random(-1ULL)); 1030 } while (prop == ZFS_PROP_CHECKSUM && value == ZIO_CHECKSUM_OFF); 1031 1032 return (value); 1033} 1034 1035static int 1036ztest_dsl_prop_set_uint64(char *osname, zfs_prop_t prop, uint64_t value, 1037 boolean_t inherit) 1038{ 1039 const char *propname = zfs_prop_to_name(prop); 1040 const char *valname; 1041 char setpoint[MAXPATHLEN]; 1042 uint64_t curval; 1043 int error; 1044 1045 error = dsl_prop_set_int(osname, propname, 1046 (inherit ? ZPROP_SRC_NONE : ZPROP_SRC_LOCAL), value); 1047 1048 if (error == ENOSPC) { 1049 ztest_record_enospc(FTAG); 1050 return (error); 1051 } 1052 ASSERT0(error); 1053 1054 VERIFY0(dsl_prop_get_integer(osname, propname, &curval, setpoint)); 1055 1056 if (ztest_opts.zo_verbose >= 6) { 1057 VERIFY(zfs_prop_index_to_string(prop, curval, &valname) == 0); 1058 (void) printf("%s %s = %s at '%s'\n", 1059 osname, propname, valname, setpoint); 1060 } 1061 1062 return (error); 1063} 1064 1065static int 1066ztest_spa_prop_set_uint64(zpool_prop_t prop, uint64_t value) 1067{ 1068 spa_t *spa = ztest_spa; 1069 nvlist_t *props = NULL; 1070 int error; 1071 1072 VERIFY(nvlist_alloc(&props, NV_UNIQUE_NAME, 0) == 0); 1073 VERIFY(nvlist_add_uint64(props, zpool_prop_to_name(prop), value) == 0); 1074 1075 error = spa_prop_set(spa, props); 1076 1077 nvlist_free(props); 1078 1079 if (error == ENOSPC) { 1080 ztest_record_enospc(FTAG); 1081 return (error); 1082 } 1083 ASSERT0(error); 1084 1085 return (error); 1086} 1087 1088static void 1089ztest_rll_init(rll_t *rll) 1090{ 1091 rll->rll_writer = NULL; 1092 rll->rll_readers = 0; 1093 VERIFY(_mutex_init(&rll->rll_lock, USYNC_THREAD, NULL) == 0); 1094 VERIFY(cond_init(&rll->rll_cv, USYNC_THREAD, NULL) == 0); 1095} 1096 1097static void 1098ztest_rll_destroy(rll_t *rll) 1099{ 1100 ASSERT(rll->rll_writer == NULL); 1101 ASSERT(rll->rll_readers == 0); 1102 VERIFY(_mutex_destroy(&rll->rll_lock) == 0); 1103 VERIFY(cond_destroy(&rll->rll_cv) == 0); 1104} 1105 1106static void 1107ztest_rll_lock(rll_t *rll, rl_type_t type) 1108{ 1109 VERIFY(mutex_lock(&rll->rll_lock) == 0); 1110 1111 if (type == RL_READER) { 1112 while (rll->rll_writer != NULL) 1113 (void) cond_wait(&rll->rll_cv, &rll->rll_lock); 1114 rll->rll_readers++; 1115 } else { 1116 while (rll->rll_writer != NULL || rll->rll_readers) 1117 (void) cond_wait(&rll->rll_cv, &rll->rll_lock); 1118 rll->rll_writer = curthread; 1119 } 1120 1121 VERIFY(mutex_unlock(&rll->rll_lock) == 0); 1122} 1123 1124static void 1125ztest_rll_unlock(rll_t *rll) 1126{ 1127 VERIFY(mutex_lock(&rll->rll_lock) == 0); 1128 1129 if (rll->rll_writer) { 1130 ASSERT(rll->rll_readers == 0); 1131 rll->rll_writer = NULL; 1132 } else { 1133 ASSERT(rll->rll_readers != 0); 1134 ASSERT(rll->rll_writer == NULL); 1135 rll->rll_readers--; 1136 } 1137 1138 if (rll->rll_writer == NULL && rll->rll_readers == 0) 1139 VERIFY(cond_broadcast(&rll->rll_cv) == 0); 1140 1141 VERIFY(mutex_unlock(&rll->rll_lock) == 0); 1142} 1143 1144static void 1145ztest_object_lock(ztest_ds_t *zd, uint64_t object, rl_type_t type) 1146{ 1147 rll_t *rll = &zd->zd_object_lock[object & (ZTEST_OBJECT_LOCKS - 1)]; 1148 1149 ztest_rll_lock(rll, type); 1150} 1151 1152static void 1153ztest_object_unlock(ztest_ds_t *zd, uint64_t object) 1154{ 1155 rll_t *rll = &zd->zd_object_lock[object & (ZTEST_OBJECT_LOCKS - 1)]; 1156 1157 ztest_rll_unlock(rll); 1158} 1159 1160static rl_t * 1161ztest_range_lock(ztest_ds_t *zd, uint64_t object, uint64_t offset, 1162 uint64_t size, rl_type_t type) 1163{ 1164 uint64_t hash = object ^ (offset % (ZTEST_RANGE_LOCKS + 1)); 1165 rll_t *rll = &zd->zd_range_lock[hash & (ZTEST_RANGE_LOCKS - 1)]; 1166 rl_t *rl; 1167 1168 rl = umem_alloc(sizeof (*rl), UMEM_NOFAIL); 1169 rl->rl_object = object; 1170 rl->rl_offset = offset; 1171 rl->rl_size = size; 1172 rl->rl_lock = rll; 1173 1174 ztest_rll_lock(rll, type); 1175 1176 return (rl); 1177} 1178 1179static void 1180ztest_range_unlock(rl_t *rl) 1181{ 1182 rll_t *rll = rl->rl_lock; 1183 1184 ztest_rll_unlock(rll); 1185 1186 umem_free(rl, sizeof (*rl)); 1187} 1188 1189static void 1190ztest_zd_init(ztest_ds_t *zd, ztest_shared_ds_t *szd, objset_t *os) 1191{ 1192 zd->zd_os = os; 1193 zd->zd_zilog = dmu_objset_zil(os); 1194 zd->zd_shared = szd; 1195 dmu_objset_name(os, zd->zd_name); 1196 1197 if (zd->zd_shared != NULL) 1198 zd->zd_shared->zd_seq = 0; 1199 1200 VERIFY(rwlock_init(&zd->zd_zilog_lock, USYNC_THREAD, NULL) == 0); 1201 VERIFY(_mutex_init(&zd->zd_dirobj_lock, USYNC_THREAD, NULL) == 0); 1202 1203 for (int l = 0; l < ZTEST_OBJECT_LOCKS; l++) 1204 ztest_rll_init(&zd->zd_object_lock[l]); 1205 1206 for (int l = 0; l < ZTEST_RANGE_LOCKS; l++) 1207 ztest_rll_init(&zd->zd_range_lock[l]); 1208} 1209 1210static void 1211ztest_zd_fini(ztest_ds_t *zd) 1212{ 1213 VERIFY(_mutex_destroy(&zd->zd_dirobj_lock) == 0); 1214 1215 for (int l = 0; l < ZTEST_OBJECT_LOCKS; l++) 1216 ztest_rll_destroy(&zd->zd_object_lock[l]); 1217 1218 for (int l = 0; l < ZTEST_RANGE_LOCKS; l++) 1219 ztest_rll_destroy(&zd->zd_range_lock[l]); 1220} 1221 1222#define TXG_MIGHTWAIT (ztest_random(10) == 0 ? TXG_NOWAIT : TXG_WAIT) 1223 1224static uint64_t 1225ztest_tx_assign(dmu_tx_t *tx, uint64_t txg_how, const char *tag) 1226{ 1227 uint64_t txg; 1228 int error; 1229 1230 /* 1231 * Attempt to assign tx to some transaction group. 1232 */ 1233 error = dmu_tx_assign(tx, txg_how); 1234 if (error) { 1235 if (error == ERESTART) { 1236 ASSERT(txg_how == TXG_NOWAIT); 1237 dmu_tx_wait(tx); 1238 } else { 1239 ASSERT3U(error, ==, ENOSPC); 1240 ztest_record_enospc(tag); 1241 } 1242 dmu_tx_abort(tx); 1243 return (0); 1244 } 1245 txg = dmu_tx_get_txg(tx); 1246 ASSERT(txg != 0); 1247 return (txg); 1248} 1249 1250static void 1251ztest_pattern_set(void *buf, uint64_t size, uint64_t value) 1252{ 1253 uint64_t *ip = buf; 1254 uint64_t *ip_end = (uint64_t *)((uintptr_t)buf + (uintptr_t)size); 1255 1256 while (ip < ip_end) 1257 *ip++ = value; 1258} 1259 1260static boolean_t 1261ztest_pattern_match(void *buf, uint64_t size, uint64_t value) 1262{ 1263 uint64_t *ip = buf; 1264 uint64_t *ip_end = (uint64_t *)((uintptr_t)buf + (uintptr_t)size); 1265 uint64_t diff = 0; 1266 1267 while (ip < ip_end) 1268 diff |= (value - *ip++); 1269 1270 return (diff == 0); 1271} 1272 1273static void 1274ztest_bt_generate(ztest_block_tag_t *bt, objset_t *os, uint64_t object, 1275 uint64_t offset, uint64_t gen, uint64_t txg, uint64_t crtxg) 1276{ 1277 bt->bt_magic = BT_MAGIC; 1278 bt->bt_objset = dmu_objset_id(os); 1279 bt->bt_object = object; 1280 bt->bt_offset = offset; 1281 bt->bt_gen = gen; 1282 bt->bt_txg = txg; 1283 bt->bt_crtxg = crtxg; 1284} 1285 1286static void 1287ztest_bt_verify(ztest_block_tag_t *bt, objset_t *os, uint64_t object, 1288 uint64_t offset, uint64_t gen, uint64_t txg, uint64_t crtxg) 1289{ 1290 ASSERT3U(bt->bt_magic, ==, BT_MAGIC); 1291 ASSERT3U(bt->bt_objset, ==, dmu_objset_id(os)); 1292 ASSERT3U(bt->bt_object, ==, object); 1293 ASSERT3U(bt->bt_offset, ==, offset); 1294 ASSERT3U(bt->bt_gen, <=, gen); 1295 ASSERT3U(bt->bt_txg, <=, txg); 1296 ASSERT3U(bt->bt_crtxg, ==, crtxg); 1297} 1298 1299static ztest_block_tag_t * 1300ztest_bt_bonus(dmu_buf_t *db) 1301{ 1302 dmu_object_info_t doi; 1303 ztest_block_tag_t *bt; 1304 1305 dmu_object_info_from_db(db, &doi); 1306 ASSERT3U(doi.doi_bonus_size, <=, db->db_size); 1307 ASSERT3U(doi.doi_bonus_size, >=, sizeof (*bt)); 1308 bt = (void *)((char *)db->db_data + doi.doi_bonus_size - sizeof (*bt)); 1309 1310 return (bt); 1311} 1312 1313/* 1314 * ZIL logging ops 1315 */ 1316 1317#define lrz_type lr_mode 1318#define lrz_blocksize lr_uid 1319#define lrz_ibshift lr_gid 1320#define lrz_bonustype lr_rdev 1321#define lrz_bonuslen lr_crtime[1] 1322 1323static void 1324ztest_log_create(ztest_ds_t *zd, dmu_tx_t *tx, lr_create_t *lr) 1325{ 1326 char *name = (void *)(lr + 1); /* name follows lr */ 1327 size_t namesize = strlen(name) + 1; 1328 itx_t *itx; 1329 1330 if (zil_replaying(zd->zd_zilog, tx)) 1331 return; 1332 1333 itx = zil_itx_create(TX_CREATE, sizeof (*lr) + namesize); 1334 bcopy(&lr->lr_common + 1, &itx->itx_lr + 1, 1335 sizeof (*lr) + namesize - sizeof (lr_t)); 1336 1337 zil_itx_assign(zd->zd_zilog, itx, tx); 1338} 1339 1340static void 1341ztest_log_remove(ztest_ds_t *zd, dmu_tx_t *tx, lr_remove_t *lr, uint64_t object) 1342{ 1343 char *name = (void *)(lr + 1); /* name follows lr */ 1344 size_t namesize = strlen(name) + 1; 1345 itx_t *itx; 1346 1347 if (zil_replaying(zd->zd_zilog, tx)) 1348 return; 1349 1350 itx = zil_itx_create(TX_REMOVE, sizeof (*lr) + namesize); 1351 bcopy(&lr->lr_common + 1, &itx->itx_lr + 1, 1352 sizeof (*lr) + namesize - sizeof (lr_t)); 1353 1354 itx->itx_oid = object; 1355 zil_itx_assign(zd->zd_zilog, itx, tx); 1356} 1357 1358static void 1359ztest_log_write(ztest_ds_t *zd, dmu_tx_t *tx, lr_write_t *lr) 1360{ 1361 itx_t *itx; 1362 itx_wr_state_t write_state = ztest_random(WR_NUM_STATES); 1363 1364 if (zil_replaying(zd->zd_zilog, tx)) 1365 return; 1366 1367 if (lr->lr_length > ZIL_MAX_LOG_DATA) 1368 write_state = WR_INDIRECT; 1369 1370 itx = zil_itx_create(TX_WRITE, 1371 sizeof (*lr) + (write_state == WR_COPIED ? lr->lr_length : 0)); 1372 1373 if (write_state == WR_COPIED && 1374 dmu_read(zd->zd_os, lr->lr_foid, lr->lr_offset, lr->lr_length, 1375 ((lr_write_t *)&itx->itx_lr) + 1, DMU_READ_NO_PREFETCH) != 0) { 1376 zil_itx_destroy(itx); 1377 itx = zil_itx_create(TX_WRITE, sizeof (*lr)); 1378 write_state = WR_NEED_COPY; 1379 } 1380 itx->itx_private = zd; 1381 itx->itx_wr_state = write_state; 1382 itx->itx_sync = (ztest_random(8) == 0); 1383 1384 bcopy(&lr->lr_common + 1, &itx->itx_lr + 1, 1385 sizeof (*lr) - sizeof (lr_t)); 1386 1387 zil_itx_assign(zd->zd_zilog, itx, tx); 1388} 1389 1390static void 1391ztest_log_truncate(ztest_ds_t *zd, dmu_tx_t *tx, lr_truncate_t *lr) 1392{ 1393 itx_t *itx; 1394 1395 if (zil_replaying(zd->zd_zilog, tx)) 1396 return; 1397 1398 itx = zil_itx_create(TX_TRUNCATE, sizeof (*lr)); 1399 bcopy(&lr->lr_common + 1, &itx->itx_lr + 1, 1400 sizeof (*lr) - sizeof (lr_t)); 1401 1402 itx->itx_sync = B_FALSE; 1403 zil_itx_assign(zd->zd_zilog, itx, tx); 1404} 1405 1406static void 1407ztest_log_setattr(ztest_ds_t *zd, dmu_tx_t *tx, lr_setattr_t *lr) 1408{ 1409 itx_t *itx; 1410 1411 if (zil_replaying(zd->zd_zilog, tx)) 1412 return; 1413 1414 itx = zil_itx_create(TX_SETATTR, sizeof (*lr)); 1415 bcopy(&lr->lr_common + 1, &itx->itx_lr + 1, 1416 sizeof (*lr) - sizeof (lr_t)); 1417 1418 itx->itx_sync = B_FALSE; 1419 zil_itx_assign(zd->zd_zilog, itx, tx); 1420} 1421 1422/* 1423 * ZIL replay ops 1424 */ 1425static int 1426ztest_replay_create(ztest_ds_t *zd, lr_create_t *lr, boolean_t byteswap) 1427{ 1428 char *name = (void *)(lr + 1); /* name follows lr */ 1429 objset_t *os = zd->zd_os; 1430 ztest_block_tag_t *bbt; 1431 dmu_buf_t *db; 1432 dmu_tx_t *tx; 1433 uint64_t txg; 1434 int error = 0; 1435 1436 if (byteswap) 1437 byteswap_uint64_array(lr, sizeof (*lr)); 1438 1439 ASSERT(lr->lr_doid == ZTEST_DIROBJ); 1440 ASSERT(name[0] != '\0'); 1441 1442 tx = dmu_tx_create(os); 1443 1444 dmu_tx_hold_zap(tx, lr->lr_doid, B_TRUE, name); 1445 1446 if (lr->lrz_type == DMU_OT_ZAP_OTHER) { 1447 dmu_tx_hold_zap(tx, DMU_NEW_OBJECT, B_TRUE, NULL); 1448 } else { 1449 dmu_tx_hold_bonus(tx, DMU_NEW_OBJECT); 1450 } 1451 1452 txg = ztest_tx_assign(tx, TXG_WAIT, FTAG); 1453 if (txg == 0) 1454 return (ENOSPC); 1455 1456 ASSERT(dmu_objset_zil(os)->zl_replay == !!lr->lr_foid); 1457 1458 if (lr->lrz_type == DMU_OT_ZAP_OTHER) { 1459 if (lr->lr_foid == 0) { 1460 lr->lr_foid = zap_create(os, 1461 lr->lrz_type, lr->lrz_bonustype, 1462 lr->lrz_bonuslen, tx); 1463 } else { 1464 error = zap_create_claim(os, lr->lr_foid, 1465 lr->lrz_type, lr->lrz_bonustype, 1466 lr->lrz_bonuslen, tx); 1467 } 1468 } else { 1469 if (lr->lr_foid == 0) { 1470 lr->lr_foid = dmu_object_alloc(os, 1471 lr->lrz_type, 0, lr->lrz_bonustype, 1472 lr->lrz_bonuslen, tx); 1473 } else { 1474 error = dmu_object_claim(os, lr->lr_foid, 1475 lr->lrz_type, 0, lr->lrz_bonustype, 1476 lr->lrz_bonuslen, tx); 1477 } 1478 } 1479 1480 if (error) { 1481 ASSERT3U(error, ==, EEXIST); 1482 ASSERT(zd->zd_zilog->zl_replay); 1483 dmu_tx_commit(tx); 1484 return (error); 1485 } 1486 1487 ASSERT(lr->lr_foid != 0); 1488 1489 if (lr->lrz_type != DMU_OT_ZAP_OTHER) 1490 VERIFY3U(0, ==, dmu_object_set_blocksize(os, lr->lr_foid, 1491 lr->lrz_blocksize, lr->lrz_ibshift, tx)); 1492 1493 VERIFY3U(0, ==, dmu_bonus_hold(os, lr->lr_foid, FTAG, &db)); 1494 bbt = ztest_bt_bonus(db); 1495 dmu_buf_will_dirty(db, tx); 1496 ztest_bt_generate(bbt, os, lr->lr_foid, -1ULL, lr->lr_gen, txg, txg); 1497 dmu_buf_rele(db, FTAG); 1498 1499 VERIFY3U(0, ==, zap_add(os, lr->lr_doid, name, sizeof (uint64_t), 1, 1500 &lr->lr_foid, tx)); 1501 1502 (void) ztest_log_create(zd, tx, lr); 1503 1504 dmu_tx_commit(tx); 1505 1506 return (0); 1507} 1508 1509static int 1510ztest_replay_remove(ztest_ds_t *zd, lr_remove_t *lr, boolean_t byteswap) 1511{ 1512 char *name = (void *)(lr + 1); /* name follows lr */ 1513 objset_t *os = zd->zd_os; 1514 dmu_object_info_t doi; 1515 dmu_tx_t *tx; 1516 uint64_t object, txg; 1517 1518 if (byteswap) 1519 byteswap_uint64_array(lr, sizeof (*lr)); 1520 1521 ASSERT(lr->lr_doid == ZTEST_DIROBJ); 1522 ASSERT(name[0] != '\0'); 1523 1524 VERIFY3U(0, ==, 1525 zap_lookup(os, lr->lr_doid, name, sizeof (object), 1, &object)); 1526 ASSERT(object != 0); 1527 1528 ztest_object_lock(zd, object, RL_WRITER); 1529 1530 VERIFY3U(0, ==, dmu_object_info(os, object, &doi)); 1531 1532 tx = dmu_tx_create(os); 1533 1534 dmu_tx_hold_zap(tx, lr->lr_doid, B_FALSE, name); 1535 dmu_tx_hold_free(tx, object, 0, DMU_OBJECT_END); 1536 1537 txg = ztest_tx_assign(tx, TXG_WAIT, FTAG); 1538 if (txg == 0) { 1539 ztest_object_unlock(zd, object); 1540 return (ENOSPC); 1541 } 1542 1543 if (doi.doi_type == DMU_OT_ZAP_OTHER) { 1544 VERIFY3U(0, ==, zap_destroy(os, object, tx)); 1545 } else { 1546 VERIFY3U(0, ==, dmu_object_free(os, object, tx)); 1547 } 1548 1549 VERIFY3U(0, ==, zap_remove(os, lr->lr_doid, name, tx)); 1550 1551 (void) ztest_log_remove(zd, tx, lr, object); 1552 1553 dmu_tx_commit(tx); 1554 1555 ztest_object_unlock(zd, object); 1556 1557 return (0); 1558} 1559 1560static int 1561ztest_replay_write(ztest_ds_t *zd, lr_write_t *lr, boolean_t byteswap) 1562{ 1563 objset_t *os = zd->zd_os; 1564 void *data = lr + 1; /* data follows lr */ 1565 uint64_t offset, length; 1566 ztest_block_tag_t *bt = data; 1567 ztest_block_tag_t *bbt; 1568 uint64_t gen, txg, lrtxg, crtxg; 1569 dmu_object_info_t doi; 1570 dmu_tx_t *tx; 1571 dmu_buf_t *db; 1572 arc_buf_t *abuf = NULL; 1573 rl_t *rl; 1574 1575 if (byteswap) 1576 byteswap_uint64_array(lr, sizeof (*lr)); 1577 1578 offset = lr->lr_offset; 1579 length = lr->lr_length; 1580 1581 /* If it's a dmu_sync() block, write the whole block */ 1582 if (lr->lr_common.lrc_reclen == sizeof (lr_write_t)) { 1583 uint64_t blocksize = BP_GET_LSIZE(&lr->lr_blkptr); 1584 if (length < blocksize) { 1585 offset -= offset % blocksize; 1586 length = blocksize; 1587 } 1588 } 1589 1590 if (bt->bt_magic == BSWAP_64(BT_MAGIC)) 1591 byteswap_uint64_array(bt, sizeof (*bt)); 1592 1593 if (bt->bt_magic != BT_MAGIC) 1594 bt = NULL; 1595 1596 ztest_object_lock(zd, lr->lr_foid, RL_READER); 1597 rl = ztest_range_lock(zd, lr->lr_foid, offset, length, RL_WRITER); 1598 1599 VERIFY3U(0, ==, dmu_bonus_hold(os, lr->lr_foid, FTAG, &db)); 1600 1601 dmu_object_info_from_db(db, &doi); 1602 1603 bbt = ztest_bt_bonus(db); 1604 ASSERT3U(bbt->bt_magic, ==, BT_MAGIC); 1605 gen = bbt->bt_gen; 1606 crtxg = bbt->bt_crtxg; 1607 lrtxg = lr->lr_common.lrc_txg; 1608 1609 tx = dmu_tx_create(os); 1610 1611 dmu_tx_hold_write(tx, lr->lr_foid, offset, length); 1612 1613 if (ztest_random(8) == 0 && length == doi.doi_data_block_size && 1614 P2PHASE(offset, length) == 0) 1615 abuf = dmu_request_arcbuf(db, length); 1616 1617 txg = ztest_tx_assign(tx, TXG_WAIT, FTAG); 1618 if (txg == 0) { 1619 if (abuf != NULL) 1620 dmu_return_arcbuf(abuf); 1621 dmu_buf_rele(db, FTAG); 1622 ztest_range_unlock(rl); 1623 ztest_object_unlock(zd, lr->lr_foid); 1624 return (ENOSPC); 1625 } 1626 1627 if (bt != NULL) { 1628 /* 1629 * Usually, verify the old data before writing new data -- 1630 * but not always, because we also want to verify correct 1631 * behavior when the data was not recently read into cache. 1632 */ 1633 ASSERT(offset % doi.doi_data_block_size == 0); 1634 if (ztest_random(4) != 0) { 1635 int prefetch = ztest_random(2) ? 1636 DMU_READ_PREFETCH : DMU_READ_NO_PREFETCH; 1637 ztest_block_tag_t rbt; 1638 1639 VERIFY(dmu_read(os, lr->lr_foid, offset, 1640 sizeof (rbt), &rbt, prefetch) == 0); 1641 if (rbt.bt_magic == BT_MAGIC) { 1642 ztest_bt_verify(&rbt, os, lr->lr_foid, 1643 offset, gen, txg, crtxg); 1644 } 1645 } 1646 1647 /* 1648 * Writes can appear to be newer than the bonus buffer because 1649 * the ztest_get_data() callback does a dmu_read() of the 1650 * open-context data, which may be different than the data 1651 * as it was when the write was generated. 1652 */ 1653 if (zd->zd_zilog->zl_replay) { 1654 ztest_bt_verify(bt, os, lr->lr_foid, offset, 1655 MAX(gen, bt->bt_gen), MAX(txg, lrtxg), 1656 bt->bt_crtxg); 1657 } 1658 1659 /* 1660 * Set the bt's gen/txg to the bonus buffer's gen/txg 1661 * so that all of the usual ASSERTs will work. 1662 */ 1663 ztest_bt_generate(bt, os, lr->lr_foid, offset, gen, txg, crtxg); 1664 } 1665 1666 if (abuf == NULL) { 1667 dmu_write(os, lr->lr_foid, offset, length, data, tx); 1668 } else { 1669 bcopy(data, abuf->b_data, length); 1670 dmu_assign_arcbuf(db, offset, abuf, tx); 1671 } 1672 1673 (void) ztest_log_write(zd, tx, lr); 1674 1675 dmu_buf_rele(db, FTAG); 1676 1677 dmu_tx_commit(tx); 1678 1679 ztest_range_unlock(rl); 1680 ztest_object_unlock(zd, lr->lr_foid); 1681 1682 return (0); 1683} 1684 1685static int 1686ztest_replay_truncate(ztest_ds_t *zd, lr_truncate_t *lr, boolean_t byteswap) 1687{ 1688 objset_t *os = zd->zd_os; 1689 dmu_tx_t *tx; 1690 uint64_t txg; 1691 rl_t *rl; 1692 1693 if (byteswap) 1694 byteswap_uint64_array(lr, sizeof (*lr)); 1695 1696 ztest_object_lock(zd, lr->lr_foid, RL_READER); 1697 rl = ztest_range_lock(zd, lr->lr_foid, lr->lr_offset, lr->lr_length, 1698 RL_WRITER); 1699 1700 tx = dmu_tx_create(os); 1701 1702 dmu_tx_hold_free(tx, lr->lr_foid, lr->lr_offset, lr->lr_length); 1703 1704 txg = ztest_tx_assign(tx, TXG_WAIT, FTAG); 1705 if (txg == 0) { 1706 ztest_range_unlock(rl); 1707 ztest_object_unlock(zd, lr->lr_foid); 1708 return (ENOSPC); 1709 } 1710 1711 VERIFY(dmu_free_range(os, lr->lr_foid, lr->lr_offset, 1712 lr->lr_length, tx) == 0); 1713 1714 (void) ztest_log_truncate(zd, tx, lr); 1715 1716 dmu_tx_commit(tx); 1717 1718 ztest_range_unlock(rl); 1719 ztest_object_unlock(zd, lr->lr_foid); 1720 1721 return (0); 1722} 1723 1724static int 1725ztest_replay_setattr(ztest_ds_t *zd, lr_setattr_t *lr, boolean_t byteswap) 1726{ 1727 objset_t *os = zd->zd_os; 1728 dmu_tx_t *tx; 1729 dmu_buf_t *db; 1730 ztest_block_tag_t *bbt; 1731 uint64_t txg, lrtxg, crtxg; 1732 1733 if (byteswap) 1734 byteswap_uint64_array(lr, sizeof (*lr)); 1735 1736 ztest_object_lock(zd, lr->lr_foid, RL_WRITER); 1737 1738 VERIFY3U(0, ==, dmu_bonus_hold(os, lr->lr_foid, FTAG, &db)); 1739 1740 tx = dmu_tx_create(os); 1741 dmu_tx_hold_bonus(tx, lr->lr_foid); 1742 1743 txg = ztest_tx_assign(tx, TXG_WAIT, FTAG); 1744 if (txg == 0) { 1745 dmu_buf_rele(db, FTAG); 1746 ztest_object_unlock(zd, lr->lr_foid); 1747 return (ENOSPC); 1748 } 1749 1750 bbt = ztest_bt_bonus(db); 1751 ASSERT3U(bbt->bt_magic, ==, BT_MAGIC); 1752 crtxg = bbt->bt_crtxg; 1753 lrtxg = lr->lr_common.lrc_txg; 1754 1755 if (zd->zd_zilog->zl_replay) { 1756 ASSERT(lr->lr_size != 0); 1757 ASSERT(lr->lr_mode != 0); 1758 ASSERT(lrtxg != 0); 1759 } else { 1760 /* 1761 * Randomly change the size and increment the generation. 1762 */ 1763 lr->lr_size = (ztest_random(db->db_size / sizeof (*bbt)) + 1) * 1764 sizeof (*bbt); 1765 lr->lr_mode = bbt->bt_gen + 1; 1766 ASSERT(lrtxg == 0); 1767 } 1768 1769 /* 1770 * Verify that the current bonus buffer is not newer than our txg. 1771 */ 1772 ztest_bt_verify(bbt, os, lr->lr_foid, -1ULL, lr->lr_mode, 1773 MAX(txg, lrtxg), crtxg); 1774 1775 dmu_buf_will_dirty(db, tx); 1776 1777 ASSERT3U(lr->lr_size, >=, sizeof (*bbt)); 1778 ASSERT3U(lr->lr_size, <=, db->db_size); 1779 VERIFY0(dmu_set_bonus(db, lr->lr_size, tx)); 1780 bbt = ztest_bt_bonus(db); 1781 1782 ztest_bt_generate(bbt, os, lr->lr_foid, -1ULL, lr->lr_mode, txg, crtxg); 1783 1784 dmu_buf_rele(db, FTAG); 1785 1786 (void) ztest_log_setattr(zd, tx, lr); 1787 1788 dmu_tx_commit(tx); 1789 1790 ztest_object_unlock(zd, lr->lr_foid); 1791 1792 return (0); 1793} 1794 1795zil_replay_func_t *ztest_replay_vector[TX_MAX_TYPE] = { 1796 NULL, /* 0 no such transaction type */ 1797 ztest_replay_create, /* TX_CREATE */ 1798 NULL, /* TX_MKDIR */ 1799 NULL, /* TX_MKXATTR */ 1800 NULL, /* TX_SYMLINK */ 1801 ztest_replay_remove, /* TX_REMOVE */ 1802 NULL, /* TX_RMDIR */ 1803 NULL, /* TX_LINK */ 1804 NULL, /* TX_RENAME */ 1805 ztest_replay_write, /* TX_WRITE */ 1806 ztest_replay_truncate, /* TX_TRUNCATE */ 1807 ztest_replay_setattr, /* TX_SETATTR */ 1808 NULL, /* TX_ACL */ 1809 NULL, /* TX_CREATE_ACL */ 1810 NULL, /* TX_CREATE_ATTR */ 1811 NULL, /* TX_CREATE_ACL_ATTR */ 1812 NULL, /* TX_MKDIR_ACL */ 1813 NULL, /* TX_MKDIR_ATTR */ 1814 NULL, /* TX_MKDIR_ACL_ATTR */ 1815 NULL, /* TX_WRITE2 */ 1816}; 1817 1818/* 1819 * ZIL get_data callbacks 1820 */ 1821 1822static void 1823ztest_get_done(zgd_t *zgd, int error) 1824{ 1825 ztest_ds_t *zd = zgd->zgd_private; 1826 uint64_t object = zgd->zgd_rl->rl_object; 1827 1828 if (zgd->zgd_db) 1829 dmu_buf_rele(zgd->zgd_db, zgd); 1830 1831 ztest_range_unlock(zgd->zgd_rl); 1832 ztest_object_unlock(zd, object); 1833 1834 if (error == 0 && zgd->zgd_bp) 1835 zil_add_block(zgd->zgd_zilog, zgd->zgd_bp); 1836 1837 umem_free(zgd, sizeof (*zgd)); 1838} 1839 1840static int 1841ztest_get_data(void *arg, lr_write_t *lr, char *buf, zio_t *zio) 1842{ 1843 ztest_ds_t *zd = arg; 1844 objset_t *os = zd->zd_os; 1845 uint64_t object = lr->lr_foid; 1846 uint64_t offset = lr->lr_offset; 1847 uint64_t size = lr->lr_length; 1848 blkptr_t *bp = &lr->lr_blkptr; 1849 uint64_t txg = lr->lr_common.lrc_txg; 1850 uint64_t crtxg; 1851 dmu_object_info_t doi; 1852 dmu_buf_t *db; 1853 zgd_t *zgd; 1854 int error; 1855 1856 ztest_object_lock(zd, object, RL_READER); 1857 error = dmu_bonus_hold(os, object, FTAG, &db); 1858 if (error) { 1859 ztest_object_unlock(zd, object); 1860 return (error); 1861 } 1862 1863 crtxg = ztest_bt_bonus(db)->bt_crtxg; 1864 1865 if (crtxg == 0 || crtxg > txg) { 1866 dmu_buf_rele(db, FTAG); 1867 ztest_object_unlock(zd, object); 1868 return (ENOENT); 1869 } 1870 1871 dmu_object_info_from_db(db, &doi); 1872 dmu_buf_rele(db, FTAG); 1873 db = NULL; 1874 1875 zgd = umem_zalloc(sizeof (*zgd), UMEM_NOFAIL); 1876 zgd->zgd_zilog = zd->zd_zilog; 1877 zgd->zgd_private = zd; 1878 1879 if (buf != NULL) { /* immediate write */ 1880 zgd->zgd_rl = ztest_range_lock(zd, object, offset, size, 1881 RL_READER); 1882 1883 error = dmu_read(os, object, offset, size, buf, 1884 DMU_READ_NO_PREFETCH); 1885 ASSERT(error == 0); 1886 } else { 1887 size = doi.doi_data_block_size; 1888 if (ISP2(size)) { 1889 offset = P2ALIGN(offset, size); 1890 } else { 1891 ASSERT(offset < size); 1892 offset = 0; 1893 } 1894 1895 zgd->zgd_rl = ztest_range_lock(zd, object, offset, size, 1896 RL_READER); 1897 1898 error = dmu_buf_hold(os, object, offset, zgd, &db, 1899 DMU_READ_NO_PREFETCH); 1900 1901 if (error == 0) { 1902 blkptr_t *obp = dmu_buf_get_blkptr(db); 1903 if (obp) { 1904 ASSERT(BP_IS_HOLE(bp)); 1905 *bp = *obp; 1906 } 1907 1908 zgd->zgd_db = db; 1909 zgd->zgd_bp = bp; 1910 1911 ASSERT(db->db_offset == offset); 1912 ASSERT(db->db_size == size); 1913 1914 error = dmu_sync(zio, lr->lr_common.lrc_txg, 1915 ztest_get_done, zgd); 1916 1917 if (error == 0) 1918 return (0); 1919 } 1920 } 1921 1922 ztest_get_done(zgd, error); 1923 1924 return (error); 1925} 1926 1927static void * 1928ztest_lr_alloc(size_t lrsize, char *name) 1929{ 1930 char *lr; 1931 size_t namesize = name ? strlen(name) + 1 : 0; 1932 1933 lr = umem_zalloc(lrsize + namesize, UMEM_NOFAIL); 1934 1935 if (name) 1936 bcopy(name, lr + lrsize, namesize); 1937 1938 return (lr); 1939} 1940 1941void 1942ztest_lr_free(void *lr, size_t lrsize, char *name) 1943{ 1944 size_t namesize = name ? strlen(name) + 1 : 0; 1945 1946 umem_free(lr, lrsize + namesize); 1947} 1948 1949/* 1950 * Lookup a bunch of objects. Returns the number of objects not found. 1951 */ 1952static int 1953ztest_lookup(ztest_ds_t *zd, ztest_od_t *od, int count) 1954{ 1955 int missing = 0; 1956 int error; 1957 1958 ASSERT(_mutex_held(&zd->zd_dirobj_lock)); 1959 1960 for (int i = 0; i < count; i++, od++) { 1961 od->od_object = 0; 1962 error = zap_lookup(zd->zd_os, od->od_dir, od->od_name, 1963 sizeof (uint64_t), 1, &od->od_object); 1964 if (error) { 1965 ASSERT(error == ENOENT); 1966 ASSERT(od->od_object == 0); 1967 missing++; 1968 } else { 1969 dmu_buf_t *db; 1970 ztest_block_tag_t *bbt; 1971 dmu_object_info_t doi; 1972 1973 ASSERT(od->od_object != 0); 1974 ASSERT(missing == 0); /* there should be no gaps */ 1975 1976 ztest_object_lock(zd, od->od_object, RL_READER); 1977 VERIFY3U(0, ==, dmu_bonus_hold(zd->zd_os, 1978 od->od_object, FTAG, &db)); 1979 dmu_object_info_from_db(db, &doi); 1980 bbt = ztest_bt_bonus(db); 1981 ASSERT3U(bbt->bt_magic, ==, BT_MAGIC); 1982 od->od_type = doi.doi_type; 1983 od->od_blocksize = doi.doi_data_block_size; 1984 od->od_gen = bbt->bt_gen; 1985 dmu_buf_rele(db, FTAG); 1986 ztest_object_unlock(zd, od->od_object); 1987 } 1988 } 1989 1990 return (missing); 1991} 1992 1993static int 1994ztest_create(ztest_ds_t *zd, ztest_od_t *od, int count) 1995{ 1996 int missing = 0; 1997 1998 ASSERT(_mutex_held(&zd->zd_dirobj_lock)); 1999 2000 for (int i = 0; i < count; i++, od++) { 2001 if (missing) { 2002 od->od_object = 0; 2003 missing++; 2004 continue; 2005 } 2006 2007 lr_create_t *lr = ztest_lr_alloc(sizeof (*lr), od->od_name); 2008 2009 lr->lr_doid = od->od_dir; 2010 lr->lr_foid = 0; /* 0 to allocate, > 0 to claim */ 2011 lr->lrz_type = od->od_crtype; 2012 lr->lrz_blocksize = od->od_crblocksize; 2013 lr->lrz_ibshift = ztest_random_ibshift(); 2014 lr->lrz_bonustype = DMU_OT_UINT64_OTHER; 2015 lr->lrz_bonuslen = dmu_bonus_max(); 2016 lr->lr_gen = od->od_crgen; 2017 lr->lr_crtime[0] = time(NULL); 2018 2019 if (ztest_replay_create(zd, lr, B_FALSE) != 0) { 2020 ASSERT(missing == 0); 2021 od->od_object = 0; 2022 missing++; 2023 } else { 2024 od->od_object = lr->lr_foid; 2025 od->od_type = od->od_crtype; 2026 od->od_blocksize = od->od_crblocksize; 2027 od->od_gen = od->od_crgen; 2028 ASSERT(od->od_object != 0); 2029 } 2030 2031 ztest_lr_free(lr, sizeof (*lr), od->od_name); 2032 } 2033 2034 return (missing); 2035} 2036 2037static int 2038ztest_remove(ztest_ds_t *zd, ztest_od_t *od, int count) 2039{ 2040 int missing = 0; 2041 int error; 2042 2043 ASSERT(_mutex_held(&zd->zd_dirobj_lock)); 2044 2045 od += count - 1; 2046 2047 for (int i = count - 1; i >= 0; i--, od--) { 2048 if (missing) { 2049 missing++; 2050 continue; 2051 } 2052 2053 /* 2054 * No object was found. 2055 */ 2056 if (od->od_object == 0) 2057 continue; 2058 2059 lr_remove_t *lr = ztest_lr_alloc(sizeof (*lr), od->od_name); 2060 2061 lr->lr_doid = od->od_dir; 2062 2063 if ((error = ztest_replay_remove(zd, lr, B_FALSE)) != 0) { 2064 ASSERT3U(error, ==, ENOSPC); 2065 missing++; 2066 } else { 2067 od->od_object = 0; 2068 } 2069 ztest_lr_free(lr, sizeof (*lr), od->od_name); 2070 } 2071 2072 return (missing); 2073} 2074 2075static int 2076ztest_write(ztest_ds_t *zd, uint64_t object, uint64_t offset, uint64_t size, 2077 void *data) 2078{ 2079 lr_write_t *lr; 2080 int error; 2081 2082 lr = ztest_lr_alloc(sizeof (*lr) + size, NULL); 2083 2084 lr->lr_foid = object; 2085 lr->lr_offset = offset; 2086 lr->lr_length = size; 2087 lr->lr_blkoff = 0; 2088 BP_ZERO(&lr->lr_blkptr); 2089 2090 bcopy(data, lr + 1, size); 2091 2092 error = ztest_replay_write(zd, lr, B_FALSE); 2093 2094 ztest_lr_free(lr, sizeof (*lr) + size, NULL); 2095 2096 return (error); 2097} 2098 2099static int 2100ztest_truncate(ztest_ds_t *zd, uint64_t object, uint64_t offset, uint64_t size) 2101{ 2102 lr_truncate_t *lr; 2103 int error; 2104 2105 lr = ztest_lr_alloc(sizeof (*lr), NULL); 2106 2107 lr->lr_foid = object; 2108 lr->lr_offset = offset; 2109 lr->lr_length = size; 2110 2111 error = ztest_replay_truncate(zd, lr, B_FALSE); 2112 2113 ztest_lr_free(lr, sizeof (*lr), NULL); 2114 2115 return (error); 2116} 2117 2118static int 2119ztest_setattr(ztest_ds_t *zd, uint64_t object) 2120{ 2121 lr_setattr_t *lr; 2122 int error; 2123 2124 lr = ztest_lr_alloc(sizeof (*lr), NULL); 2125 2126 lr->lr_foid = object; 2127 lr->lr_size = 0; 2128 lr->lr_mode = 0; 2129 2130 error = ztest_replay_setattr(zd, lr, B_FALSE); 2131 2132 ztest_lr_free(lr, sizeof (*lr), NULL); 2133 2134 return (error); 2135} 2136 2137static void 2138ztest_prealloc(ztest_ds_t *zd, uint64_t object, uint64_t offset, uint64_t size) 2139{ 2140 objset_t *os = zd->zd_os; 2141 dmu_tx_t *tx; 2142 uint64_t txg; 2143 rl_t *rl; 2144 2145 txg_wait_synced(dmu_objset_pool(os), 0); 2146 2147 ztest_object_lock(zd, object, RL_READER); 2148 rl = ztest_range_lock(zd, object, offset, size, RL_WRITER); 2149 2150 tx = dmu_tx_create(os); 2151 2152 dmu_tx_hold_write(tx, object, offset, size); 2153 2154 txg = ztest_tx_assign(tx, TXG_WAIT, FTAG); 2155 2156 if (txg != 0) { 2157 dmu_prealloc(os, object, offset, size, tx); 2158 dmu_tx_commit(tx); 2159 txg_wait_synced(dmu_objset_pool(os), txg); 2160 } else { 2161 (void) dmu_free_long_range(os, object, offset, size); 2162 } 2163 2164 ztest_range_unlock(rl); 2165 ztest_object_unlock(zd, object); 2166} 2167 2168static void 2169ztest_io(ztest_ds_t *zd, uint64_t object, uint64_t offset) 2170{ 2171 int err; 2172 ztest_block_tag_t wbt; 2173 dmu_object_info_t doi; 2174 enum ztest_io_type io_type; 2175 uint64_t blocksize; 2176 void *data; 2177 2178 VERIFY(dmu_object_info(zd->zd_os, object, &doi) == 0); 2179 blocksize = doi.doi_data_block_size; 2180 data = umem_alloc(blocksize, UMEM_NOFAIL); 2181 2182 /* 2183 * Pick an i/o type at random, biased toward writing block tags. 2184 */ 2185 io_type = ztest_random(ZTEST_IO_TYPES); 2186 if (ztest_random(2) == 0) 2187 io_type = ZTEST_IO_WRITE_TAG; 2188 2189 (void) rw_rdlock(&zd->zd_zilog_lock); 2190 2191 switch (io_type) { 2192 2193 case ZTEST_IO_WRITE_TAG: 2194 ztest_bt_generate(&wbt, zd->zd_os, object, offset, 0, 0, 0); 2195 (void) ztest_write(zd, object, offset, sizeof (wbt), &wbt); 2196 break; 2197 2198 case ZTEST_IO_WRITE_PATTERN: 2199 (void) memset(data, 'a' + (object + offset) % 5, blocksize); 2200 if (ztest_random(2) == 0) { 2201 /* 2202 * Induce fletcher2 collisions to ensure that 2203 * zio_ddt_collision() detects and resolves them 2204 * when using fletcher2-verify for deduplication. 2205 */ 2206 ((uint64_t *)data)[0] ^= 1ULL << 63; 2207 ((uint64_t *)data)[4] ^= 1ULL << 63; 2208 } 2209 (void) ztest_write(zd, object, offset, blocksize, data); 2210 break; 2211 2212 case ZTEST_IO_WRITE_ZEROES: 2213 bzero(data, blocksize); 2214 (void) ztest_write(zd, object, offset, blocksize, data); 2215 break; 2216 2217 case ZTEST_IO_TRUNCATE: 2218 (void) ztest_truncate(zd, object, offset, blocksize); 2219 break; 2220 2221 case ZTEST_IO_SETATTR: 2222 (void) ztest_setattr(zd, object); 2223 break; 2224 2225 case ZTEST_IO_REWRITE: 2226 (void) rw_rdlock(&ztest_name_lock); 2227 err = ztest_dsl_prop_set_uint64(zd->zd_name, 2228 ZFS_PROP_CHECKSUM, spa_dedup_checksum(ztest_spa), 2229 B_FALSE); 2230 VERIFY(err == 0 || err == ENOSPC); 2231 err = ztest_dsl_prop_set_uint64(zd->zd_name, 2232 ZFS_PROP_COMPRESSION, 2233 ztest_random_dsl_prop(ZFS_PROP_COMPRESSION), 2234 B_FALSE); 2235 VERIFY(err == 0 || err == ENOSPC); 2236 (void) rw_unlock(&ztest_name_lock); 2237 2238 VERIFY0(dmu_read(zd->zd_os, object, offset, blocksize, data, 2239 DMU_READ_NO_PREFETCH)); 2240 2241 (void) ztest_write(zd, object, offset, blocksize, data); 2242 break; 2243 } 2244 2245 (void) rw_unlock(&zd->zd_zilog_lock); 2246 2247 umem_free(data, blocksize); 2248} 2249 2250/* 2251 * Initialize an object description template. 2252 */ 2253static void 2254ztest_od_init(ztest_od_t *od, uint64_t id, char *tag, uint64_t index, 2255 dmu_object_type_t type, uint64_t blocksize, uint64_t gen) 2256{ 2257 od->od_dir = ZTEST_DIROBJ; 2258 od->od_object = 0; 2259 2260 od->od_crtype = type; 2261 od->od_crblocksize = blocksize ? blocksize : ztest_random_blocksize(); 2262 od->od_crgen = gen; 2263 2264 od->od_type = DMU_OT_NONE; 2265 od->od_blocksize = 0; 2266 od->od_gen = 0; 2267 2268 (void) snprintf(od->od_name, sizeof (od->od_name), "%s(%lld)[%llu]", 2269 tag, (int64_t)id, index); 2270} 2271 2272/* 2273 * Lookup or create the objects for a test using the od template. 2274 * If the objects do not all exist, or if 'remove' is specified, 2275 * remove any existing objects and create new ones. Otherwise, 2276 * use the existing objects. 2277 */ 2278static int 2279ztest_object_init(ztest_ds_t *zd, ztest_od_t *od, size_t size, boolean_t remove) 2280{ 2281 int count = size / sizeof (*od); 2282 int rv = 0; 2283 2284 VERIFY(mutex_lock(&zd->zd_dirobj_lock) == 0); 2285 if ((ztest_lookup(zd, od, count) != 0 || remove) && 2286 (ztest_remove(zd, od, count) != 0 || 2287 ztest_create(zd, od, count) != 0)) 2288 rv = -1; 2289 zd->zd_od = od; 2290 VERIFY(mutex_unlock(&zd->zd_dirobj_lock) == 0); 2291 2292 return (rv); 2293} 2294 2295/* ARGSUSED */ 2296void 2297ztest_zil_commit(ztest_ds_t *zd, uint64_t id) 2298{ 2299 zilog_t *zilog = zd->zd_zilog; 2300 2301 (void) rw_rdlock(&zd->zd_zilog_lock); 2302 2303 zil_commit(zilog, ztest_random(ZTEST_OBJECTS)); 2304 2305 /* 2306 * Remember the committed values in zd, which is in parent/child 2307 * shared memory. If we die, the next iteration of ztest_run() 2308 * will verify that the log really does contain this record. 2309 */ 2310 mutex_enter(&zilog->zl_lock); 2311 ASSERT(zd->zd_shared != NULL); 2312 ASSERT3U(zd->zd_shared->zd_seq, <=, zilog->zl_commit_lr_seq); 2313 zd->zd_shared->zd_seq = zilog->zl_commit_lr_seq; 2314 mutex_exit(&zilog->zl_lock); 2315 2316 (void) rw_unlock(&zd->zd_zilog_lock); 2317} 2318 2319/* 2320 * This function is designed to simulate the operations that occur during a 2321 * mount/unmount operation. We hold the dataset across these operations in an 2322 * attempt to expose any implicit assumptions about ZIL management. 2323 */ 2324/* ARGSUSED */ 2325void 2326ztest_zil_remount(ztest_ds_t *zd, uint64_t id) 2327{ 2328 objset_t *os = zd->zd_os; 2329 2330 /* 2331 * We grab the zd_dirobj_lock to ensure that no other thread is 2332 * updating the zil (i.e. adding in-memory log records) and the 2333 * zd_zilog_lock to block any I/O. 2334 */ 2335 VERIFY0(mutex_lock(&zd->zd_dirobj_lock)); 2336 (void) rw_wrlock(&zd->zd_zilog_lock); 2337 2338 /* zfsvfs_teardown() */ 2339 zil_close(zd->zd_zilog); 2340 2341 /* zfsvfs_setup() */ 2342 VERIFY(zil_open(os, ztest_get_data) == zd->zd_zilog); 2343 zil_replay(os, zd, ztest_replay_vector); 2344 2345 (void) rw_unlock(&zd->zd_zilog_lock); 2346 VERIFY(mutex_unlock(&zd->zd_dirobj_lock) == 0); 2347} 2348 2349/* 2350 * Verify that we can't destroy an active pool, create an existing pool, 2351 * or create a pool with a bad vdev spec. 2352 */ 2353/* ARGSUSED */ 2354void 2355ztest_spa_create_destroy(ztest_ds_t *zd, uint64_t id) 2356{ 2357 ztest_shared_opts_t *zo = &ztest_opts; 2358 spa_t *spa; 2359 nvlist_t *nvroot; 2360 2361 /* 2362 * Attempt to create using a bad file. 2363 */ 2364 nvroot = make_vdev_root("/dev/bogus", NULL, NULL, 0, 0, 0, 0, 0, 1); 2365 VERIFY3U(ENOENT, ==, 2366 spa_create("ztest_bad_file", nvroot, NULL, NULL)); 2367 nvlist_free(nvroot); 2368 2369 /* 2370 * Attempt to create using a bad mirror. 2371 */ 2372 nvroot = make_vdev_root("/dev/bogus", NULL, NULL, 0, 0, 0, 0, 2, 1); 2373 VERIFY3U(ENOENT, ==, 2374 spa_create("ztest_bad_mirror", nvroot, NULL, NULL)); 2375 nvlist_free(nvroot); 2376 2377 /* 2378 * Attempt to create an existing pool. It shouldn't matter 2379 * what's in the nvroot; we should fail with EEXIST. 2380 */ 2381 (void) rw_rdlock(&ztest_name_lock); 2382 nvroot = make_vdev_root("/dev/bogus", NULL, NULL, 0, 0, 0, 0, 0, 1); 2383 VERIFY3U(EEXIST, ==, spa_create(zo->zo_pool, nvroot, NULL, NULL)); 2384 nvlist_free(nvroot); 2385 VERIFY3U(0, ==, spa_open(zo->zo_pool, &spa, FTAG)); 2386 VERIFY3U(EBUSY, ==, spa_destroy(zo->zo_pool)); 2387 spa_close(spa, FTAG); 2388 2389 (void) rw_unlock(&ztest_name_lock); 2390} 2391 2392/* ARGSUSED */ 2393void 2394ztest_spa_upgrade(ztest_ds_t *zd, uint64_t id) 2395{ 2396 spa_t *spa; 2397 uint64_t initial_version = SPA_VERSION_INITIAL; 2398 uint64_t version, newversion; 2399 nvlist_t *nvroot, *props; 2400 char *name; 2401 2402 VERIFY0(mutex_lock(&ztest_vdev_lock)); 2403 name = kmem_asprintf("%s_upgrade", ztest_opts.zo_pool); 2404 2405 /* 2406 * Clean up from previous runs. 2407 */ 2408 (void) spa_destroy(name); 2409 2410 nvroot = make_vdev_root(NULL, NULL, name, ztest_opts.zo_vdev_size, 0, 2411 0, ztest_opts.zo_raidz, ztest_opts.zo_mirrors, 1); 2412 2413 /* 2414 * If we're configuring a RAIDZ device then make sure that the 2415 * the initial version is capable of supporting that feature. 2416 */ 2417 switch (ztest_opts.zo_raidz_parity) { 2418 case 0: 2419 case 1: 2420 initial_version = SPA_VERSION_INITIAL; 2421 break; 2422 case 2: 2423 initial_version = SPA_VERSION_RAIDZ2; 2424 break; 2425 case 3: 2426 initial_version = SPA_VERSION_RAIDZ3; 2427 break; 2428 } 2429 2430 /* 2431 * Create a pool with a spa version that can be upgraded. Pick 2432 * a value between initial_version and SPA_VERSION_BEFORE_FEATURES. 2433 */ 2434 do { 2435 version = ztest_random_spa_version(initial_version); 2436 } while (version > SPA_VERSION_BEFORE_FEATURES); 2437 2438 props = fnvlist_alloc(); 2439 fnvlist_add_uint64(props, 2440 zpool_prop_to_name(ZPOOL_PROP_VERSION), version); 2441 VERIFY0(spa_create(name, nvroot, props, NULL)); 2442 fnvlist_free(nvroot); 2443 fnvlist_free(props); 2444 2445 VERIFY0(spa_open(name, &spa, FTAG)); 2446 VERIFY3U(spa_version(spa), ==, version); 2447 newversion = ztest_random_spa_version(version + 1); 2448 2449 if (ztest_opts.zo_verbose >= 4) { 2450 (void) printf("upgrading spa version from %llu to %llu\n", 2451 (u_longlong_t)version, (u_longlong_t)newversion); 2452 } 2453 2454 spa_upgrade(spa, newversion); 2455 VERIFY3U(spa_version(spa), >, version); 2456 VERIFY3U(spa_version(spa), ==, fnvlist_lookup_uint64(spa->spa_config, 2457 zpool_prop_to_name(ZPOOL_PROP_VERSION))); 2458 spa_close(spa, FTAG); 2459 2460 strfree(name); 2461 VERIFY0(mutex_unlock(&ztest_vdev_lock)); 2462} 2463 2464static vdev_t * 2465vdev_lookup_by_path(vdev_t *vd, const char *path) 2466{ 2467 vdev_t *mvd; 2468 2469 if (vd->vdev_path != NULL && strcmp(path, vd->vdev_path) == 0) 2470 return (vd); 2471 2472 for (int c = 0; c < vd->vdev_children; c++) 2473 if ((mvd = vdev_lookup_by_path(vd->vdev_child[c], path)) != 2474 NULL) 2475 return (mvd); 2476 2477 return (NULL); 2478} 2479 2480/* 2481 * Find the first available hole which can be used as a top-level. 2482 */ 2483int 2484find_vdev_hole(spa_t *spa) 2485{ 2486 vdev_t *rvd = spa->spa_root_vdev; 2487 int c; 2488 2489 ASSERT(spa_config_held(spa, SCL_VDEV, RW_READER) == SCL_VDEV); 2490 2491 for (c = 0; c < rvd->vdev_children; c++) { 2492 vdev_t *cvd = rvd->vdev_child[c]; 2493 2494 if (cvd->vdev_ishole) 2495 break; 2496 } 2497 return (c); 2498} 2499 2500/* 2501 * Verify that vdev_add() works as expected. 2502 */ 2503/* ARGSUSED */ 2504void 2505ztest_vdev_add_remove(ztest_ds_t *zd, uint64_t id) 2506{ 2507 ztest_shared_t *zs = ztest_shared; 2508 spa_t *spa = ztest_spa; 2509 uint64_t leaves; 2510 uint64_t guid; 2511 nvlist_t *nvroot; 2512 int error; 2513 2514 VERIFY(mutex_lock(&ztest_vdev_lock) == 0); 2515 leaves = MAX(zs->zs_mirrors + zs->zs_splits, 1) * ztest_opts.zo_raidz; 2516 2517 spa_config_enter(spa, SCL_VDEV, FTAG, RW_READER); 2518 2519 ztest_shared->zs_vdev_next_leaf = find_vdev_hole(spa) * leaves; 2520 2521 /* 2522 * If we have slogs then remove them 1/4 of the time. 2523 */ 2524 if (spa_has_slogs(spa) && ztest_random(4) == 0) { 2525 /* 2526 * Grab the guid from the head of the log class rotor. 2527 */ 2528 guid = spa_log_class(spa)->mc_rotor->mg_vd->vdev_guid; 2529 2530 spa_config_exit(spa, SCL_VDEV, FTAG); 2531 2532 /* 2533 * We have to grab the zs_name_lock as writer to 2534 * prevent a race between removing a slog (dmu_objset_find) 2535 * and destroying a dataset. Removing the slog will 2536 * grab a reference on the dataset which may cause 2537 * dmu_objset_destroy() to fail with EBUSY thus 2538 * leaving the dataset in an inconsistent state. 2539 */ 2540 VERIFY(rw_wrlock(&ztest_name_lock) == 0); 2541 error = spa_vdev_remove(spa, guid, B_FALSE); 2542 VERIFY(rw_unlock(&ztest_name_lock) == 0); 2543 2544 if (error && error != EEXIST) 2545 fatal(0, "spa_vdev_remove() = %d", error); 2546 } else { 2547 spa_config_exit(spa, SCL_VDEV, FTAG); 2548 2549 /* 2550 * Make 1/4 of the devices be log devices. 2551 */ 2552 nvroot = make_vdev_root(NULL, NULL, NULL, 2553 ztest_opts.zo_vdev_size, 0, 2554 ztest_random(4) == 0, ztest_opts.zo_raidz, 2555 zs->zs_mirrors, 1); 2556 2557 error = spa_vdev_add(spa, nvroot); 2558 nvlist_free(nvroot); 2559 2560 if (error == ENOSPC) 2561 ztest_record_enospc("spa_vdev_add"); 2562 else if (error != 0) 2563 fatal(0, "spa_vdev_add() = %d", error); 2564 } 2565 2566 VERIFY(mutex_unlock(&ztest_vdev_lock) == 0); 2567} 2568 2569/* 2570 * Verify that adding/removing aux devices (l2arc, hot spare) works as expected. 2571 */ 2572/* ARGSUSED */ 2573void 2574ztest_vdev_aux_add_remove(ztest_ds_t *zd, uint64_t id) 2575{ 2576 ztest_shared_t *zs = ztest_shared; 2577 spa_t *spa = ztest_spa; 2578 vdev_t *rvd = spa->spa_root_vdev; 2579 spa_aux_vdev_t *sav; 2580 char *aux; 2581 uint64_t guid = 0; 2582 int error; 2583 2584 if (ztest_random(2) == 0) { 2585 sav = &spa->spa_spares; 2586 aux = ZPOOL_CONFIG_SPARES; 2587 } else { 2588 sav = &spa->spa_l2cache; 2589 aux = ZPOOL_CONFIG_L2CACHE; 2590 } 2591 2592 VERIFY(mutex_lock(&ztest_vdev_lock) == 0); 2593 2594 spa_config_enter(spa, SCL_VDEV, FTAG, RW_READER); 2595 2596 if (sav->sav_count != 0 && ztest_random(4) == 0) { 2597 /* 2598 * Pick a random device to remove. 2599 */ 2600 guid = sav->sav_vdevs[ztest_random(sav->sav_count)]->vdev_guid; 2601 } else { 2602 /* 2603 * Find an unused device we can add. 2604 */ 2605 zs->zs_vdev_aux = 0; 2606 for (;;) { 2607 char path[MAXPATHLEN]; 2608 int c; 2609 (void) snprintf(path, sizeof (path), ztest_aux_template, 2610 ztest_opts.zo_dir, ztest_opts.zo_pool, aux, 2611 zs->zs_vdev_aux); 2612 for (c = 0; c < sav->sav_count; c++) 2613 if (strcmp(sav->sav_vdevs[c]->vdev_path, 2614 path) == 0) 2615 break; 2616 if (c == sav->sav_count && 2617 vdev_lookup_by_path(rvd, path) == NULL) 2618 break; 2619 zs->zs_vdev_aux++; 2620 } 2621 } 2622 2623 spa_config_exit(spa, SCL_VDEV, FTAG); 2624 2625 if (guid == 0) { 2626 /* 2627 * Add a new device. 2628 */ 2629 nvlist_t *nvroot = make_vdev_root(NULL, aux, NULL, 2630 (ztest_opts.zo_vdev_size * 5) / 4, 0, 0, 0, 0, 1); 2631 error = spa_vdev_add(spa, nvroot); 2632 if (error != 0) 2633 fatal(0, "spa_vdev_add(%p) = %d", nvroot, error); 2634 nvlist_free(nvroot); 2635 } else { 2636 /* 2637 * Remove an existing device. Sometimes, dirty its 2638 * vdev state first to make sure we handle removal 2639 * of devices that have pending state changes. 2640 */ 2641 if (ztest_random(2) == 0) 2642 (void) vdev_online(spa, guid, 0, NULL); 2643 2644 error = spa_vdev_remove(spa, guid, B_FALSE); 2645 if (error != 0 && error != EBUSY) 2646 fatal(0, "spa_vdev_remove(%llu) = %d", guid, error); 2647 } 2648 2649 VERIFY(mutex_unlock(&ztest_vdev_lock) == 0); 2650} 2651 2652/* 2653 * split a pool if it has mirror tlvdevs 2654 */ 2655/* ARGSUSED */ 2656void 2657ztest_split_pool(ztest_ds_t *zd, uint64_t id) 2658{ 2659 ztest_shared_t *zs = ztest_shared; 2660 spa_t *spa = ztest_spa; 2661 vdev_t *rvd = spa->spa_root_vdev; 2662 nvlist_t *tree, **child, *config, *split, **schild; 2663 uint_t c, children, schildren = 0, lastlogid = 0; 2664 int error = 0; 2665 2666 VERIFY(mutex_lock(&ztest_vdev_lock) == 0); 2667 2668 /* ensure we have a useable config; mirrors of raidz aren't supported */ 2669 if (zs->zs_mirrors < 3 || ztest_opts.zo_raidz > 1) { 2670 VERIFY(mutex_unlock(&ztest_vdev_lock) == 0); 2671 return; 2672 } 2673 2674 /* clean up the old pool, if any */ 2675 (void) spa_destroy("splitp"); 2676 2677 spa_config_enter(spa, SCL_VDEV, FTAG, RW_READER); 2678 2679 /* generate a config from the existing config */ 2680 mutex_enter(&spa->spa_props_lock); 2681 VERIFY(nvlist_lookup_nvlist(spa->spa_config, ZPOOL_CONFIG_VDEV_TREE, 2682 &tree) == 0); 2683 mutex_exit(&spa->spa_props_lock); 2684 2685 VERIFY(nvlist_lookup_nvlist_array(tree, ZPOOL_CONFIG_CHILDREN, &child, 2686 &children) == 0); 2687 2688 schild = malloc(rvd->vdev_children * sizeof (nvlist_t *)); 2689 for (c = 0; c < children; c++) { 2690 vdev_t *tvd = rvd->vdev_child[c]; 2691 nvlist_t **mchild; 2692 uint_t mchildren; 2693 2694 if (tvd->vdev_islog || tvd->vdev_ops == &vdev_hole_ops) { 2695 VERIFY(nvlist_alloc(&schild[schildren], NV_UNIQUE_NAME, 2696 0) == 0); 2697 VERIFY(nvlist_add_string(schild[schildren], 2698 ZPOOL_CONFIG_TYPE, VDEV_TYPE_HOLE) == 0); 2699 VERIFY(nvlist_add_uint64(schild[schildren], 2700 ZPOOL_CONFIG_IS_HOLE, 1) == 0); 2701 if (lastlogid == 0) 2702 lastlogid = schildren; 2703 ++schildren; 2704 continue; 2705 } 2706 lastlogid = 0; 2707 VERIFY(nvlist_lookup_nvlist_array(child[c], 2708 ZPOOL_CONFIG_CHILDREN, &mchild, &mchildren) == 0); 2709 VERIFY(nvlist_dup(mchild[0], &schild[schildren++], 0) == 0); 2710 } 2711 2712 /* OK, create a config that can be used to split */ 2713 VERIFY(nvlist_alloc(&split, NV_UNIQUE_NAME, 0) == 0); 2714 VERIFY(nvlist_add_string(split, ZPOOL_CONFIG_TYPE, 2715 VDEV_TYPE_ROOT) == 0); 2716 VERIFY(nvlist_add_nvlist_array(split, ZPOOL_CONFIG_CHILDREN, schild, 2717 lastlogid != 0 ? lastlogid : schildren) == 0); 2718 2719 VERIFY(nvlist_alloc(&config, NV_UNIQUE_NAME, 0) == 0); 2720 VERIFY(nvlist_add_nvlist(config, ZPOOL_CONFIG_VDEV_TREE, split) == 0); 2721 2722 for (c = 0; c < schildren; c++) 2723 nvlist_free(schild[c]); 2724 free(schild); 2725 nvlist_free(split); 2726 2727 spa_config_exit(spa, SCL_VDEV, FTAG); 2728 2729 (void) rw_wrlock(&ztest_name_lock); 2730 error = spa_vdev_split_mirror(spa, "splitp", config, NULL, B_FALSE); 2731 (void) rw_unlock(&ztest_name_lock); 2732 2733 nvlist_free(config); 2734 2735 if (error == 0) { 2736 (void) printf("successful split - results:\n"); 2737 mutex_enter(&spa_namespace_lock); 2738 show_pool_stats(spa); 2739 show_pool_stats(spa_lookup("splitp")); 2740 mutex_exit(&spa_namespace_lock); 2741 ++zs->zs_splits; 2742 --zs->zs_mirrors; 2743 } 2744 VERIFY(mutex_unlock(&ztest_vdev_lock) == 0); 2745 2746} 2747 2748/* 2749 * Verify that we can attach and detach devices. 2750 */ 2751/* ARGSUSED */ 2752void 2753ztest_vdev_attach_detach(ztest_ds_t *zd, uint64_t id) 2754{ 2755 ztest_shared_t *zs = ztest_shared; 2756 spa_t *spa = ztest_spa; 2757 spa_aux_vdev_t *sav = &spa->spa_spares; 2758 vdev_t *rvd = spa->spa_root_vdev; 2759 vdev_t *oldvd, *newvd, *pvd; 2760 nvlist_t *root; 2761 uint64_t leaves; 2762 uint64_t leaf, top; 2763 uint64_t ashift = ztest_get_ashift(); 2764 uint64_t oldguid, pguid; 2765 uint64_t oldsize, newsize; 2766 char oldpath[MAXPATHLEN], newpath[MAXPATHLEN]; 2767 int replacing; 2768 int oldvd_has_siblings = B_FALSE; 2769 int newvd_is_spare = B_FALSE; 2770 int oldvd_is_log; 2771 int error, expected_error; 2772 2773 VERIFY(mutex_lock(&ztest_vdev_lock) == 0); 2774 leaves = MAX(zs->zs_mirrors, 1) * ztest_opts.zo_raidz; 2775 2776 spa_config_enter(spa, SCL_VDEV, FTAG, RW_READER); 2777 2778 /* 2779 * Decide whether to do an attach or a replace. 2780 */ 2781 replacing = ztest_random(2); 2782 2783 /* 2784 * Pick a random top-level vdev. 2785 */ 2786 top = ztest_random_vdev_top(spa, B_TRUE); 2787 2788 /* 2789 * Pick a random leaf within it. 2790 */ 2791 leaf = ztest_random(leaves); 2792 2793 /* 2794 * Locate this vdev. 2795 */ 2796 oldvd = rvd->vdev_child[top]; 2797 if (zs->zs_mirrors >= 1) { 2798 ASSERT(oldvd->vdev_ops == &vdev_mirror_ops); 2799 ASSERT(oldvd->vdev_children >= zs->zs_mirrors); 2800 oldvd = oldvd->vdev_child[leaf / ztest_opts.zo_raidz]; 2801 } 2802 if (ztest_opts.zo_raidz > 1) { 2803 ASSERT(oldvd->vdev_ops == &vdev_raidz_ops); 2804 ASSERT(oldvd->vdev_children == ztest_opts.zo_raidz); 2805 oldvd = oldvd->vdev_child[leaf % ztest_opts.zo_raidz]; 2806 } 2807 2808 /* 2809 * If we're already doing an attach or replace, oldvd may be a 2810 * mirror vdev -- in which case, pick a random child. 2811 */ 2812 while (oldvd->vdev_children != 0) { 2813 oldvd_has_siblings = B_TRUE; 2814 ASSERT(oldvd->vdev_children >= 2); 2815 oldvd = oldvd->vdev_child[ztest_random(oldvd->vdev_children)]; 2816 } 2817 2818 oldguid = oldvd->vdev_guid; 2819 oldsize = vdev_get_min_asize(oldvd); 2820 oldvd_is_log = oldvd->vdev_top->vdev_islog; 2821 (void) strcpy(oldpath, oldvd->vdev_path); 2822 pvd = oldvd->vdev_parent; 2823 pguid = pvd->vdev_guid; 2824 2825 /* 2826 * If oldvd has siblings, then half of the time, detach it. 2827 */ 2828 if (oldvd_has_siblings && ztest_random(2) == 0) { 2829 spa_config_exit(spa, SCL_VDEV, FTAG); 2830 error = spa_vdev_detach(spa, oldguid, pguid, B_FALSE); 2831 if (error != 0 && error != ENODEV && error != EBUSY && 2832 error != ENOTSUP) 2833 fatal(0, "detach (%s) returned %d", oldpath, error); 2834 VERIFY(mutex_unlock(&ztest_vdev_lock) == 0); 2835 return; 2836 } 2837 2838 /* 2839 * For the new vdev, choose with equal probability between the two 2840 * standard paths (ending in either 'a' or 'b') or a random hot spare. 2841 */ 2842 if (sav->sav_count != 0 && ztest_random(3) == 0) { 2843 newvd = sav->sav_vdevs[ztest_random(sav->sav_count)]; 2844 newvd_is_spare = B_TRUE; 2845 (void) strcpy(newpath, newvd->vdev_path); 2846 } else { 2847 (void) snprintf(newpath, sizeof (newpath), ztest_dev_template, 2848 ztest_opts.zo_dir, ztest_opts.zo_pool, 2849 top * leaves + leaf); 2850 if (ztest_random(2) == 0) 2851 newpath[strlen(newpath) - 1] = 'b'; 2852 newvd = vdev_lookup_by_path(rvd, newpath); 2853 } 2854 2855 if (newvd) { 2856 newsize = vdev_get_min_asize(newvd); 2857 } else { 2858 /* 2859 * Make newsize a little bigger or smaller than oldsize. 2860 * If it's smaller, the attach should fail. 2861 * If it's larger, and we're doing a replace, 2862 * we should get dynamic LUN growth when we're done. 2863 */ 2864 newsize = 10 * oldsize / (9 + ztest_random(3)); 2865 } 2866 2867 /* 2868 * If pvd is not a mirror or root, the attach should fail with ENOTSUP, 2869 * unless it's a replace; in that case any non-replacing parent is OK. 2870 * 2871 * If newvd is already part of the pool, it should fail with EBUSY. 2872 * 2873 * If newvd is too small, it should fail with EOVERFLOW. 2874 */ 2875 if (pvd->vdev_ops != &vdev_mirror_ops && 2876 pvd->vdev_ops != &vdev_root_ops && (!replacing || 2877 pvd->vdev_ops == &vdev_replacing_ops || 2878 pvd->vdev_ops == &vdev_spare_ops)) 2879 expected_error = ENOTSUP; 2880 else if (newvd_is_spare && (!replacing || oldvd_is_log)) 2881 expected_error = ENOTSUP; 2882 else if (newvd == oldvd) 2883 expected_error = replacing ? 0 : EBUSY; 2884 else if (vdev_lookup_by_path(rvd, newpath) != NULL) 2885 expected_error = EBUSY; 2886 else if (newsize < oldsize) 2887 expected_error = EOVERFLOW; 2888 else if (ashift > oldvd->vdev_top->vdev_ashift) 2889 expected_error = EDOM; 2890 else 2891 expected_error = 0; 2892 2893 spa_config_exit(spa, SCL_VDEV, FTAG); 2894 2895 /* 2896 * Build the nvlist describing newpath. 2897 */ 2898 root = make_vdev_root(newpath, NULL, NULL, newvd == NULL ? newsize : 0, 2899 ashift, 0, 0, 0, 1); 2900 2901 error = spa_vdev_attach(spa, oldguid, root, replacing); 2902 2903 nvlist_free(root); 2904 2905 /* 2906 * If our parent was the replacing vdev, but the replace completed, 2907 * then instead of failing with ENOTSUP we may either succeed, 2908 * fail with ENODEV, or fail with EOVERFLOW. 2909 */ 2910 if (expected_error == ENOTSUP && 2911 (error == 0 || error == ENODEV || error == EOVERFLOW)) 2912 expected_error = error; 2913 2914 /* 2915 * If someone grew the LUN, the replacement may be too small. 2916 */ 2917 if (error == EOVERFLOW || error == EBUSY) 2918 expected_error = error; 2919 2920 /* XXX workaround 6690467 */ 2921 if (error != expected_error && expected_error != EBUSY) { 2922 fatal(0, "attach (%s %llu, %s %llu, %d) " 2923 "returned %d, expected %d", 2924 oldpath, oldsize, newpath, 2925 newsize, replacing, error, expected_error); 2926 } 2927 2928 VERIFY(mutex_unlock(&ztest_vdev_lock) == 0); 2929} 2930 2931/* 2932 * Callback function which expands the physical size of the vdev. 2933 */ 2934vdev_t * 2935grow_vdev(vdev_t *vd, void *arg) 2936{ 2937 spa_t *spa = vd->vdev_spa; 2938 size_t *newsize = arg; 2939 size_t fsize; 2940 int fd; 2941 2942 ASSERT(spa_config_held(spa, SCL_STATE, RW_READER) == SCL_STATE); 2943 ASSERT(vd->vdev_ops->vdev_op_leaf); 2944 2945 if ((fd = open(vd->vdev_path, O_RDWR)) == -1) 2946 return (vd); 2947 2948 fsize = lseek(fd, 0, SEEK_END); 2949 (void) ftruncate(fd, *newsize); 2950 2951 if (ztest_opts.zo_verbose >= 6) { 2952 (void) printf("%s grew from %lu to %lu bytes\n", 2953 vd->vdev_path, (ulong_t)fsize, (ulong_t)*newsize); 2954 } 2955 (void) close(fd); 2956 return (NULL); 2957} 2958 2959/* 2960 * Callback function which expands a given vdev by calling vdev_online(). 2961 */ 2962/* ARGSUSED */ 2963vdev_t * 2964online_vdev(vdev_t *vd, void *arg) 2965{ 2966 spa_t *spa = vd->vdev_spa; 2967 vdev_t *tvd = vd->vdev_top; 2968 uint64_t guid = vd->vdev_guid; 2969 uint64_t generation = spa->spa_config_generation + 1; 2970 vdev_state_t newstate = VDEV_STATE_UNKNOWN; 2971 int error; 2972 2973 ASSERT(spa_config_held(spa, SCL_STATE, RW_READER) == SCL_STATE); 2974 ASSERT(vd->vdev_ops->vdev_op_leaf); 2975 2976 /* Calling vdev_online will initialize the new metaslabs */ 2977 spa_config_exit(spa, SCL_STATE, spa); 2978 error = vdev_online(spa, guid, ZFS_ONLINE_EXPAND, &newstate); 2979 spa_config_enter(spa, SCL_STATE, spa, RW_READER); 2980 2981 /* 2982 * If vdev_online returned an error or the underlying vdev_open 2983 * failed then we abort the expand. The only way to know that 2984 * vdev_open fails is by checking the returned newstate. 2985 */ 2986 if (error || newstate != VDEV_STATE_HEALTHY) { 2987 if (ztest_opts.zo_verbose >= 5) { 2988 (void) printf("Unable to expand vdev, state %llu, " 2989 "error %d\n", (u_longlong_t)newstate, error); 2990 } 2991 return (vd); 2992 } 2993 ASSERT3U(newstate, ==, VDEV_STATE_HEALTHY); 2994 2995 /* 2996 * Since we dropped the lock we need to ensure that we're 2997 * still talking to the original vdev. It's possible this 2998 * vdev may have been detached/replaced while we were 2999 * trying to online it. 3000 */ 3001 if (generation != spa->spa_config_generation) { 3002 if (ztest_opts.zo_verbose >= 5) { 3003 (void) printf("vdev configuration has changed, " 3004 "guid %llu, state %llu, expected gen %llu, " 3005 "got gen %llu\n", 3006 (u_longlong_t)guid, 3007 (u_longlong_t)tvd->vdev_state, 3008 (u_longlong_t)generation, 3009 (u_longlong_t)spa->spa_config_generation); 3010 } 3011 return (vd); 3012 } 3013 return (NULL); 3014} 3015 3016/* 3017 * Traverse the vdev tree calling the supplied function. 3018 * We continue to walk the tree until we either have walked all 3019 * children or we receive a non-NULL return from the callback. 3020 * If a NULL callback is passed, then we just return back the first 3021 * leaf vdev we encounter. 3022 */ 3023vdev_t * 3024vdev_walk_tree(vdev_t *vd, vdev_t *(*func)(vdev_t *, void *), void *arg) 3025{ 3026 if (vd->vdev_ops->vdev_op_leaf) { 3027 if (func == NULL) 3028 return (vd); 3029 else 3030 return (func(vd, arg)); 3031 } 3032 3033 for (uint_t c = 0; c < vd->vdev_children; c++) { 3034 vdev_t *cvd = vd->vdev_child[c]; 3035 if ((cvd = vdev_walk_tree(cvd, func, arg)) != NULL) 3036 return (cvd); 3037 } 3038 return (NULL); 3039} 3040 3041/* 3042 * Verify that dynamic LUN growth works as expected. 3043 */ 3044/* ARGSUSED */ 3045void 3046ztest_vdev_LUN_growth(ztest_ds_t *zd, uint64_t id) 3047{ 3048 spa_t *spa = ztest_spa; 3049 vdev_t *vd, *tvd; 3050 metaslab_class_t *mc; 3051 metaslab_group_t *mg; 3052 size_t psize, newsize; 3053 uint64_t top; 3054 uint64_t old_class_space, new_class_space, old_ms_count, new_ms_count; 3055 3056 VERIFY(mutex_lock(&ztest_vdev_lock) == 0); 3057 spa_config_enter(spa, SCL_STATE, spa, RW_READER); 3058 3059 top = ztest_random_vdev_top(spa, B_TRUE); 3060 3061 tvd = spa->spa_root_vdev->vdev_child[top]; 3062 mg = tvd->vdev_mg; 3063 mc = mg->mg_class; 3064 old_ms_count = tvd->vdev_ms_count; 3065 old_class_space = metaslab_class_get_space(mc); 3066 3067 /* 3068 * Determine the size of the first leaf vdev associated with 3069 * our top-level device. 3070 */ 3071 vd = vdev_walk_tree(tvd, NULL, NULL); 3072 ASSERT3P(vd, !=, NULL); 3073 ASSERT(vd->vdev_ops->vdev_op_leaf); 3074 3075 psize = vd->vdev_psize; 3076 3077 /* 3078 * We only try to expand the vdev if it's healthy, less than 4x its 3079 * original size, and it has a valid psize. 3080 */ 3081 if (tvd->vdev_state != VDEV_STATE_HEALTHY || 3082 psize == 0 || psize >= 4 * ztest_opts.zo_vdev_size) { 3083 spa_config_exit(spa, SCL_STATE, spa); 3084 VERIFY(mutex_unlock(&ztest_vdev_lock) == 0); 3085 return; 3086 } 3087 ASSERT(psize > 0); 3088 newsize = psize + psize / 8; 3089 ASSERT3U(newsize, >, psize); 3090 3091 if (ztest_opts.zo_verbose >= 6) { 3092 (void) printf("Expanding LUN %s from %lu to %lu\n", 3093 vd->vdev_path, (ulong_t)psize, (ulong_t)newsize); 3094 } 3095 3096 /* 3097 * Growing the vdev is a two step process: 3098 * 1). expand the physical size (i.e. relabel) 3099 * 2). online the vdev to create the new metaslabs 3100 */ 3101 if (vdev_walk_tree(tvd, grow_vdev, &newsize) != NULL || 3102 vdev_walk_tree(tvd, online_vdev, NULL) != NULL || 3103 tvd->vdev_state != VDEV_STATE_HEALTHY) { 3104 if (ztest_opts.zo_verbose >= 5) { 3105 (void) printf("Could not expand LUN because " 3106 "the vdev configuration changed.\n"); 3107 } 3108 spa_config_exit(spa, SCL_STATE, spa); 3109 VERIFY(mutex_unlock(&ztest_vdev_lock) == 0); 3110 return; 3111 } 3112 3113 spa_config_exit(spa, SCL_STATE, spa); 3114 3115 /* 3116 * Expanding the LUN will update the config asynchronously, 3117 * thus we must wait for the async thread to complete any 3118 * pending tasks before proceeding. 3119 */ 3120 for (;;) { 3121 boolean_t done; 3122 mutex_enter(&spa->spa_async_lock); 3123 done = (spa->spa_async_thread == NULL && !spa->spa_async_tasks); 3124 mutex_exit(&spa->spa_async_lock); 3125 if (done) 3126 break; 3127 txg_wait_synced(spa_get_dsl(spa), 0); 3128 (void) poll(NULL, 0, 100); 3129 } 3130 3131 spa_config_enter(spa, SCL_STATE, spa, RW_READER); 3132 3133 tvd = spa->spa_root_vdev->vdev_child[top]; 3134 new_ms_count = tvd->vdev_ms_count; 3135 new_class_space = metaslab_class_get_space(mc); 3136 3137 if (tvd->vdev_mg != mg || mg->mg_class != mc) { 3138 if (ztest_opts.zo_verbose >= 5) { 3139 (void) printf("Could not verify LUN expansion due to " 3140 "intervening vdev offline or remove.\n"); 3141 } 3142 spa_config_exit(spa, SCL_STATE, spa); 3143 VERIFY(mutex_unlock(&ztest_vdev_lock) == 0); 3144 return; 3145 } 3146 3147 /* 3148 * Make sure we were able to grow the vdev. 3149 */ 3150 if (new_ms_count <= old_ms_count) 3151 fatal(0, "LUN expansion failed: ms_count %llu <= %llu\n", 3152 old_ms_count, new_ms_count); 3153 3154 /* 3155 * Make sure we were able to grow the pool. 3156 */ 3157 if (new_class_space <= old_class_space) 3158 fatal(0, "LUN expansion failed: class_space %llu <= %llu\n", 3159 old_class_space, new_class_space); 3160 3161 if (ztest_opts.zo_verbose >= 5) { 3162 char oldnumbuf[NN_NUMBUF_SZ], newnumbuf[NN_NUMBUF_SZ]; 3163 3164 nicenum(old_class_space, oldnumbuf, sizeof (oldnumbuf)); 3165 nicenum(new_class_space, newnumbuf, sizeof (newnumbuf)); 3166 (void) printf("%s grew from %s to %s\n", 3167 spa->spa_name, oldnumbuf, newnumbuf); 3168 } 3169 3170 spa_config_exit(spa, SCL_STATE, spa); 3171 VERIFY(mutex_unlock(&ztest_vdev_lock) == 0); 3172} 3173 3174/* 3175 * Verify that dmu_objset_{create,destroy,open,close} work as expected. 3176 */ 3177/* ARGSUSED */ 3178static void 3179ztest_objset_create_cb(objset_t *os, void *arg, cred_t *cr, dmu_tx_t *tx) 3180{ 3181 /* 3182 * Create the objects common to all ztest datasets. 3183 */ 3184 VERIFY(zap_create_claim(os, ZTEST_DIROBJ, 3185 DMU_OT_ZAP_OTHER, DMU_OT_NONE, 0, tx) == 0); 3186} 3187 3188static int 3189ztest_dataset_create(char *dsname) 3190{ 3191 uint64_t zilset = ztest_random(100); 3192 int err = dmu_objset_create(dsname, DMU_OST_OTHER, 0, 3193 ztest_objset_create_cb, NULL); 3194 3195 if (err || zilset < 80) 3196 return (err); 3197 3198 if (ztest_opts.zo_verbose >= 6) 3199 (void) printf("Setting dataset %s to sync always\n", dsname); 3200 return (ztest_dsl_prop_set_uint64(dsname, ZFS_PROP_SYNC, 3201 ZFS_SYNC_ALWAYS, B_FALSE)); 3202} 3203 3204/* ARGSUSED */ 3205static int 3206ztest_objset_destroy_cb(const char *name, void *arg) 3207{ 3208 objset_t *os; 3209 dmu_object_info_t doi; 3210 int error; 3211 3212 /* 3213 * Verify that the dataset contains a directory object. 3214 */ 3215 VERIFY0(dmu_objset_own(name, DMU_OST_OTHER, B_TRUE, FTAG, &os)); 3216 error = dmu_object_info(os, ZTEST_DIROBJ, &doi); 3217 if (error != ENOENT) { 3218 /* We could have crashed in the middle of destroying it */ 3219 ASSERT0(error); 3220 ASSERT3U(doi.doi_type, ==, DMU_OT_ZAP_OTHER); 3221 ASSERT3S(doi.doi_physical_blocks_512, >=, 0); 3222 } 3223 dmu_objset_disown(os, FTAG); 3224 3225 /* 3226 * Destroy the dataset. 3227 */ 3228 if (strchr(name, '@') != NULL) { 3229 VERIFY0(dsl_destroy_snapshot(name, B_FALSE)); 3230 } else { 3231 VERIFY0(dsl_destroy_head(name)); 3232 } 3233 return (0); 3234} 3235 3236static boolean_t 3237ztest_snapshot_create(char *osname, uint64_t id) 3238{ 3239 char snapname[ZFS_MAX_DATASET_NAME_LEN]; 3240 int error; 3241 3242 (void) snprintf(snapname, sizeof (snapname), "%llu", (u_longlong_t)id); 3243 3244 error = dmu_objset_snapshot_one(osname, snapname); 3245 if (error == ENOSPC) { 3246 ztest_record_enospc(FTAG); 3247 return (B_FALSE); 3248 } 3249 if (error != 0 && error != EEXIST) { 3250 fatal(0, "ztest_snapshot_create(%s@%s) = %d", osname, 3251 snapname, error); 3252 } 3253 return (B_TRUE); 3254} 3255 3256static boolean_t 3257ztest_snapshot_destroy(char *osname, uint64_t id) 3258{ 3259 char snapname[ZFS_MAX_DATASET_NAME_LEN]; 3260 int error; 3261 3262 (void) snprintf(snapname, sizeof (snapname), "%s@%llu", osname, 3263 (u_longlong_t)id); 3264 3265 error = dsl_destroy_snapshot(snapname, B_FALSE); 3266 if (error != 0 && error != ENOENT) 3267 fatal(0, "ztest_snapshot_destroy(%s) = %d", snapname, error); 3268 return (B_TRUE); 3269} 3270 3271/* ARGSUSED */ 3272void 3273ztest_dmu_objset_create_destroy(ztest_ds_t *zd, uint64_t id) 3274{ 3275 ztest_ds_t zdtmp; 3276 int iters; 3277 int error; 3278 objset_t *os, *os2; 3279 char name[ZFS_MAX_DATASET_NAME_LEN]; 3280 zilog_t *zilog; 3281 3282 (void) rw_rdlock(&ztest_name_lock); 3283 3284 (void) snprintf(name, sizeof (name), "%s/temp_%llu", 3285 ztest_opts.zo_pool, (u_longlong_t)id); 3286 3287 /* 3288 * If this dataset exists from a previous run, process its replay log 3289 * half of the time. If we don't replay it, then dmu_objset_destroy() 3290 * (invoked from ztest_objset_destroy_cb()) should just throw it away. 3291 */ 3292 if (ztest_random(2) == 0 && 3293 dmu_objset_own(name, DMU_OST_OTHER, B_FALSE, FTAG, &os) == 0) { 3294 ztest_zd_init(&zdtmp, NULL, os); 3295 zil_replay(os, &zdtmp, ztest_replay_vector); 3296 ztest_zd_fini(&zdtmp); 3297 dmu_objset_disown(os, FTAG); 3298 } 3299 3300 /* 3301 * There may be an old instance of the dataset we're about to 3302 * create lying around from a previous run. If so, destroy it 3303 * and all of its snapshots. 3304 */ 3305 (void) dmu_objset_find(name, ztest_objset_destroy_cb, NULL, 3306 DS_FIND_CHILDREN | DS_FIND_SNAPSHOTS); 3307 3308 /* 3309 * Verify that the destroyed dataset is no longer in the namespace. 3310 */ 3311 VERIFY3U(ENOENT, ==, dmu_objset_own(name, DMU_OST_OTHER, B_TRUE, 3312 FTAG, &os)); 3313 3314 /* 3315 * Verify that we can create a new dataset. 3316 */ 3317 error = ztest_dataset_create(name); 3318 if (error) { 3319 if (error == ENOSPC) { 3320 ztest_record_enospc(FTAG); 3321 (void) rw_unlock(&ztest_name_lock); 3322 return; 3323 } 3324 fatal(0, "dmu_objset_create(%s) = %d", name, error); 3325 } 3326 3327 VERIFY0(dmu_objset_own(name, DMU_OST_OTHER, B_FALSE, FTAG, &os)); 3328 3329 ztest_zd_init(&zdtmp, NULL, os); 3330 3331 /* 3332 * Open the intent log for it. 3333 */ 3334 zilog = zil_open(os, ztest_get_data); 3335 3336 /* 3337 * Put some objects in there, do a little I/O to them, 3338 * and randomly take a couple of snapshots along the way. 3339 */ 3340 iters = ztest_random(5); 3341 for (int i = 0; i < iters; i++) { 3342 ztest_dmu_object_alloc_free(&zdtmp, id); 3343 if (ztest_random(iters) == 0) 3344 (void) ztest_snapshot_create(name, i); 3345 } 3346 3347 /* 3348 * Verify that we cannot create an existing dataset. 3349 */ 3350 VERIFY3U(EEXIST, ==, 3351 dmu_objset_create(name, DMU_OST_OTHER, 0, NULL, NULL)); 3352 3353 /* 3354 * Verify that we can hold an objset that is also owned. 3355 */ 3356 VERIFY3U(0, ==, dmu_objset_hold(name, FTAG, &os2)); 3357 dmu_objset_rele(os2, FTAG); 3358 3359 /* 3360 * Verify that we cannot own an objset that is already owned. 3361 */ 3362 VERIFY3U(EBUSY, ==, 3363 dmu_objset_own(name, DMU_OST_OTHER, B_FALSE, FTAG, &os2)); 3364 3365 zil_close(zilog); 3366 dmu_objset_disown(os, FTAG); 3367 ztest_zd_fini(&zdtmp); 3368 3369 (void) rw_unlock(&ztest_name_lock); 3370} 3371 3372/* 3373 * Verify that dmu_snapshot_{create,destroy,open,close} work as expected. 3374 */ 3375void 3376ztest_dmu_snapshot_create_destroy(ztest_ds_t *zd, uint64_t id) 3377{ 3378 (void) rw_rdlock(&ztest_name_lock); 3379 (void) ztest_snapshot_destroy(zd->zd_name, id); 3380 (void) ztest_snapshot_create(zd->zd_name, id); 3381 (void) rw_unlock(&ztest_name_lock); 3382} 3383 3384/* 3385 * Cleanup non-standard snapshots and clones. 3386 */ 3387void 3388ztest_dsl_dataset_cleanup(char *osname, uint64_t id) 3389{ 3390 char snap1name[ZFS_MAX_DATASET_NAME_LEN]; 3391 char clone1name[ZFS_MAX_DATASET_NAME_LEN]; 3392 char snap2name[ZFS_MAX_DATASET_NAME_LEN]; 3393 char clone2name[ZFS_MAX_DATASET_NAME_LEN]; 3394 char snap3name[ZFS_MAX_DATASET_NAME_LEN]; 3395 int error; 3396 3397 (void) snprintf(snap1name, sizeof (snap1name), 3398 "%s@s1_%llu", osname, id); 3399 (void) snprintf(clone1name, sizeof (clone1name), 3400 "%s/c1_%llu", osname, id); 3401 (void) snprintf(snap2name, sizeof (snap2name), 3402 "%s@s2_%llu", clone1name, id); 3403 (void) snprintf(clone2name, sizeof (clone2name), 3404 "%s/c2_%llu", osname, id); 3405 (void) snprintf(snap3name, sizeof (snap3name), 3406 "%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[ZFS_MAX_DATASET_NAME_LEN]; 3433 char clone1name[ZFS_MAX_DATASET_NAME_LEN]; 3434 char snap2name[ZFS_MAX_DATASET_NAME_LEN]; 3435 char clone2name[ZFS_MAX_DATASET_NAME_LEN]; 3436 char snap3name[ZFS_MAX_DATASET_NAME_LEN]; 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, sizeof (snap1name), 3445 "%s@s1_%llu", osname, id); 3446 (void) snprintf(clone1name, sizeof (clone1name), 3447 "%s/c1_%llu", osname, id); 3448 (void) snprintf(snap2name, sizeof (snap2name), 3449 "%s@s2_%llu", clone1name, id); 3450 (void) snprintf(clone2name, sizeof (clone2name), 3451 "%s/c2_%llu", osname, id); 3452 (void) snprintf(snap3name, sizeof (snap3name), 3453 "%s@s3_%llu", clone1name, id); 3454 3455 error = dmu_objset_snapshot_one(osname, strchr(snap1name, '@') + 1); 3456 if (error && error != EEXIST) { 3457 if (error == ENOSPC) { 3458 ztest_record_enospc(FTAG); 3459 goto out; 3460 } 3461 fatal(0, "dmu_take_snapshot(%s) = %d", snap1name, error); 3462 } 3463 3464 error = dmu_objset_clone(clone1name, snap1name); 3465 if (error) { 3466 if (error == ENOSPC) { 3467 ztest_record_enospc(FTAG); 3468 goto out; 3469 } 3470 fatal(0, "dmu_objset_create(%s) = %d", clone1name, error); 3471 } 3472 3473 error = dmu_objset_snapshot_one(clone1name, strchr(snap2name, '@') + 1); 3474 if (error && error != EEXIST) { 3475 if (error == ENOSPC) { 3476 ztest_record_enospc(FTAG); 3477 goto out; 3478 } 3479 fatal(0, "dmu_open_snapshot(%s) = %d", snap2name, error); 3480 } 3481 3482 error = dmu_objset_snapshot_one(clone1name, strchr(snap3name, '@') + 1); 3483 if (error && error != EEXIST) { 3484 if (error == ENOSPC) { 3485 ztest_record_enospc(FTAG); 3486 goto out; 3487 } 3488 fatal(0, "dmu_open_snapshot(%s) = %d", snap3name, error); 3489 } 3490 3491 error = dmu_objset_clone(clone2name, snap3name); 3492 if (error) { 3493 if (error == ENOSPC) { 3494 ztest_record_enospc(FTAG); 3495 goto out; 3496 } 3497 fatal(0, "dmu_objset_create(%s) = %d", clone2name, error); 3498 } 3499 3500 error = dmu_objset_own(snap2name, DMU_OST_ANY, B_TRUE, FTAG, &os); 3501 if (error) 3502 fatal(0, "dmu_objset_own(%s) = %d", snap2name, error); 3503 error = dsl_dataset_promote(clone2name, NULL); 3504 if (error == ENOSPC) { 3505 dmu_objset_disown(os, FTAG); 3506 ztest_record_enospc(FTAG); 3507 goto out; 3508 } 3509 if (error != EBUSY) 3510 fatal(0, "dsl_dataset_promote(%s), %d, not EBUSY", clone2name, 3511 error); 3512 dmu_objset_disown(os, FTAG); 3513 3514out: 3515 ztest_dsl_dataset_cleanup(osname, id); 3516 3517 (void) rw_unlock(&ztest_name_lock); 3518} 3519 3520/* 3521 * Verify that dmu_object_{alloc,free} work as expected. 3522 */ 3523void 3524ztest_dmu_object_alloc_free(ztest_ds_t *zd, uint64_t id) 3525{ 3526 ztest_od_t od[4]; 3527 int batchsize = sizeof (od) / sizeof (od[0]); 3528 3529 for (int b = 0; b < batchsize; b++) 3530 ztest_od_init(&od[b], id, FTAG, b, DMU_OT_UINT64_OTHER, 0, 0); 3531 3532 /* 3533 * Destroy the previous batch of objects, create a new batch, 3534 * and do some I/O on the new objects. 3535 */ 3536 if (ztest_object_init(zd, od, sizeof (od), B_TRUE) != 0) 3537 return; 3538 3539 while (ztest_random(4 * batchsize) != 0) 3540 ztest_io(zd, od[ztest_random(batchsize)].od_object, 3541 ztest_random(ZTEST_RANGE_LOCKS) << SPA_MAXBLOCKSHIFT); 3542} 3543 3544/* 3545 * Verify that dmu_{read,write} work as expected. 3546 */ 3547void 3548ztest_dmu_read_write(ztest_ds_t *zd, uint64_t id) 3549{ 3550 objset_t *os = zd->zd_os; 3551 ztest_od_t od[2]; 3552 dmu_tx_t *tx; 3553 int i, freeit, error; 3554 uint64_t n, s, txg; 3555 bufwad_t *packbuf, *bigbuf, *pack, *bigH, *bigT; 3556 uint64_t packobj, packoff, packsize, bigobj, bigoff, bigsize; 3557 uint64_t chunksize = (1000 + ztest_random(1000)) * sizeof (uint64_t); 3558 uint64_t regions = 997; 3559 uint64_t stride = 123456789ULL; 3560 uint64_t width = 40; 3561 int free_percent = 5; 3562 3563 /* 3564 * This test uses two objects, packobj and bigobj, that are always 3565 * updated together (i.e. in the same tx) so that their contents are 3566 * in sync and can be compared. Their contents relate to each other 3567 * in a simple way: packobj is a dense array of 'bufwad' structures, 3568 * while bigobj is a sparse array of the same bufwads. Specifically, 3569 * for any index n, there are three bufwads that should be identical: 3570 * 3571 * packobj, at offset n * sizeof (bufwad_t) 3572 * bigobj, at the head of the nth chunk 3573 * bigobj, at the tail of the nth chunk 3574 * 3575 * The chunk size is arbitrary. It doesn't have to be a power of two, 3576 * and it doesn't have any relation to the object blocksize. 3577 * The only requirement is that it can hold at least two bufwads. 3578 * 3579 * Normally, we write the bufwad to each of these locations. 3580 * However, free_percent of the time we instead write zeroes to 3581 * packobj and perform a dmu_free_range() on bigobj. By comparing 3582 * bigobj to packobj, we can verify that the DMU is correctly 3583 * tracking which parts of an object are allocated and free, 3584 * and that the contents of the allocated blocks are correct. 3585 */ 3586 3587 /* 3588 * Read the directory info. If it's the first time, set things up. 3589 */ 3590 ztest_od_init(&od[0], id, FTAG, 0, DMU_OT_UINT64_OTHER, 0, chunksize); 3591 ztest_od_init(&od[1], id, FTAG, 1, DMU_OT_UINT64_OTHER, 0, chunksize); 3592 3593 if (ztest_object_init(zd, od, sizeof (od), B_FALSE) != 0) 3594 return; 3595 3596 bigobj = od[0].od_object; 3597 packobj = od[1].od_object; 3598 chunksize = od[0].od_gen; 3599 ASSERT(chunksize == od[1].od_gen); 3600 3601 /* 3602 * Prefetch a random chunk of the big object. 3603 * Our aim here is to get some async reads in flight 3604 * for blocks that we may free below; the DMU should 3605 * handle this race correctly. 3606 */ 3607 n = ztest_random(regions) * stride + ztest_random(width); 3608 s = 1 + ztest_random(2 * width - 1); 3609 dmu_prefetch(os, bigobj, 0, n * chunksize, s * chunksize, 3610 ZIO_PRIORITY_SYNC_READ); 3611 3612 /* 3613 * Pick a random index and compute the offsets into packobj and bigobj. 3614 */ 3615 n = ztest_random(regions) * stride + ztest_random(width); 3616 s = 1 + ztest_random(width - 1); 3617 3618 packoff = n * sizeof (bufwad_t); 3619 packsize = s * sizeof (bufwad_t); 3620 3621 bigoff = n * chunksize; 3622 bigsize = s * chunksize; 3623 3624 packbuf = umem_alloc(packsize, UMEM_NOFAIL); 3625 bigbuf = umem_alloc(bigsize, UMEM_NOFAIL); 3626 3627 /* 3628 * free_percent of the time, free a range of bigobj rather than 3629 * overwriting it. 3630 */ 3631 freeit = (ztest_random(100) < free_percent); 3632 3633 /* 3634 * Read the current contents of our objects. 3635 */ 3636 error = dmu_read(os, packobj, packoff, packsize, packbuf, 3637 DMU_READ_PREFETCH); 3638 ASSERT0(error); 3639 error = dmu_read(os, bigobj, bigoff, bigsize, bigbuf, 3640 DMU_READ_PREFETCH); 3641 ASSERT0(error); 3642 3643 /* 3644 * Get a tx for the mods to both packobj and bigobj. 3645 */ 3646 tx = dmu_tx_create(os); 3647 3648 dmu_tx_hold_write(tx, packobj, packoff, packsize); 3649 3650 if (freeit) 3651 dmu_tx_hold_free(tx, bigobj, bigoff, bigsize); 3652 else 3653 dmu_tx_hold_write(tx, bigobj, bigoff, bigsize); 3654 3655 /* This accounts for setting the checksum/compression. */ 3656 dmu_tx_hold_bonus(tx, bigobj); 3657 3658 txg = ztest_tx_assign(tx, TXG_MIGHTWAIT, FTAG); 3659 if (txg == 0) { 3660 umem_free(packbuf, packsize); 3661 umem_free(bigbuf, bigsize); 3662 return; 3663 } 3664 3665 enum zio_checksum cksum; 3666 do { 3667 cksum = (enum zio_checksum) 3668 ztest_random_dsl_prop(ZFS_PROP_CHECKSUM); 3669 } while (cksum >= ZIO_CHECKSUM_LEGACY_FUNCTIONS); 3670 dmu_object_set_checksum(os, bigobj, cksum, tx); 3671 3672 enum zio_compress comp; 3673 do { 3674 comp = (enum zio_compress) 3675 ztest_random_dsl_prop(ZFS_PROP_COMPRESSION); 3676 } while (comp >= ZIO_COMPRESS_LEGACY_FUNCTIONS); 3677 dmu_object_set_compress(os, bigobj, comp, tx); 3678 3679 /* 3680 * For each index from n to n + s, verify that the existing bufwad 3681 * in packobj matches the bufwads at the head and tail of the 3682 * corresponding chunk in bigobj. Then update all three bufwads 3683 * with the new values we want to write out. 3684 */ 3685 for (i = 0; i < s; i++) { 3686 /* LINTED */ 3687 pack = (bufwad_t *)((char *)packbuf + i * sizeof (bufwad_t)); 3688 /* LINTED */ 3689 bigH = (bufwad_t *)((char *)bigbuf + i * chunksize); 3690 /* LINTED */ 3691 bigT = (bufwad_t *)((char *)bigH + chunksize) - 1; 3692 3693 ASSERT((uintptr_t)bigH - (uintptr_t)bigbuf < bigsize); 3694 ASSERT((uintptr_t)bigT - (uintptr_t)bigbuf < bigsize); 3695 3696 if (pack->bw_txg > txg) 3697 fatal(0, "future leak: got %llx, open txg is %llx", 3698 pack->bw_txg, txg); 3699 3700 if (pack->bw_data != 0 && pack->bw_index != n + i) 3701 fatal(0, "wrong index: got %llx, wanted %llx+%llx", 3702 pack->bw_index, n, i); 3703 3704 if (bcmp(pack, bigH, sizeof (bufwad_t)) != 0) 3705 fatal(0, "pack/bigH mismatch in %p/%p", pack, bigH); 3706 3707 if (bcmp(pack, bigT, sizeof (bufwad_t)) != 0) 3708 fatal(0, "pack/bigT mismatch in %p/%p", pack, bigT); 3709 3710 if (freeit) { 3711 bzero(pack, sizeof (bufwad_t)); 3712 } else { 3713 pack->bw_index = n + i; 3714 pack->bw_txg = txg; 3715 pack->bw_data = 1 + ztest_random(-2ULL); 3716 } 3717 *bigH = *pack; 3718 *bigT = *pack; 3719 } 3720 3721 /* 3722 * We've verified all the old bufwads, and made new ones. 3723 * Now write them out. 3724 */ 3725 dmu_write(os, packobj, packoff, packsize, packbuf, tx); 3726 3727 if (freeit) { 3728 if (ztest_opts.zo_verbose >= 7) { 3729 (void) printf("freeing offset %llx size %llx" 3730 " txg %llx\n", 3731 (u_longlong_t)bigoff, 3732 (u_longlong_t)bigsize, 3733 (u_longlong_t)txg); 3734 } 3735 VERIFY(0 == dmu_free_range(os, bigobj, bigoff, bigsize, tx)); 3736 } else { 3737 if (ztest_opts.zo_verbose >= 7) { 3738 (void) printf("writing offset %llx size %llx" 3739 " txg %llx\n", 3740 (u_longlong_t)bigoff, 3741 (u_longlong_t)bigsize, 3742 (u_longlong_t)txg); 3743 } 3744 dmu_write(os, bigobj, bigoff, bigsize, bigbuf, tx); 3745 } 3746 3747 dmu_tx_commit(tx); 3748 3749 /* 3750 * Sanity check the stuff we just wrote. 3751 */ 3752 { 3753 void *packcheck = umem_alloc(packsize, UMEM_NOFAIL); 3754 void *bigcheck = umem_alloc(bigsize, UMEM_NOFAIL); 3755 3756 VERIFY(0 == dmu_read(os, packobj, packoff, 3757 packsize, packcheck, DMU_READ_PREFETCH)); 3758 VERIFY(0 == dmu_read(os, bigobj, bigoff, 3759 bigsize, bigcheck, DMU_READ_PREFETCH)); 3760 3761 ASSERT(bcmp(packbuf, packcheck, packsize) == 0); 3762 ASSERT(bcmp(bigbuf, bigcheck, bigsize) == 0); 3763 3764 umem_free(packcheck, packsize); 3765 umem_free(bigcheck, bigsize); 3766 } 3767 3768 umem_free(packbuf, packsize); 3769 umem_free(bigbuf, bigsize); 3770} 3771 3772void 3773compare_and_update_pbbufs(uint64_t s, bufwad_t *packbuf, bufwad_t *bigbuf, 3774 uint64_t bigsize, uint64_t n, uint64_t chunksize, uint64_t txg) 3775{ 3776 uint64_t i; 3777 bufwad_t *pack; 3778 bufwad_t *bigH; 3779 bufwad_t *bigT; 3780 3781 /* 3782 * For each index from n to n + s, verify that the existing bufwad 3783 * in packobj matches the bufwads at the head and tail of the 3784 * corresponding chunk in bigobj. Then update all three bufwads 3785 * with the new values we want to write out. 3786 */ 3787 for (i = 0; i < s; i++) { 3788 /* LINTED */ 3789 pack = (bufwad_t *)((char *)packbuf + i * sizeof (bufwad_t)); 3790 /* LINTED */ 3791 bigH = (bufwad_t *)((char *)bigbuf + i * chunksize); 3792 /* LINTED */ 3793 bigT = (bufwad_t *)((char *)bigH + chunksize) - 1; 3794 3795 ASSERT((uintptr_t)bigH - (uintptr_t)bigbuf < bigsize); 3796 ASSERT((uintptr_t)bigT - (uintptr_t)bigbuf < bigsize); 3797 3798 if (pack->bw_txg > txg) 3799 fatal(0, "future leak: got %llx, open txg is %llx", 3800 pack->bw_txg, txg); 3801 3802 if (pack->bw_data != 0 && pack->bw_index != n + i) 3803 fatal(0, "wrong index: got %llx, wanted %llx+%llx", 3804 pack->bw_index, n, i); 3805 3806 if (bcmp(pack, bigH, sizeof (bufwad_t)) != 0) 3807 fatal(0, "pack/bigH mismatch in %p/%p", pack, bigH); 3808 3809 if (bcmp(pack, bigT, sizeof (bufwad_t)) != 0) 3810 fatal(0, "pack/bigT mismatch in %p/%p", pack, bigT); 3811 3812 pack->bw_index = n + i; 3813 pack->bw_txg = txg; 3814 pack->bw_data = 1 + ztest_random(-2ULL); 3815 3816 *bigH = *pack; 3817 *bigT = *pack; 3818 } 3819} 3820 3821void 3822ztest_dmu_read_write_zcopy(ztest_ds_t *zd, uint64_t id) 3823{ 3824 objset_t *os = zd->zd_os; 3825 ztest_od_t od[2]; 3826 dmu_tx_t *tx; 3827 uint64_t i; 3828 int error; 3829 uint64_t n, s, txg; 3830 bufwad_t *packbuf, *bigbuf; 3831 uint64_t packobj, packoff, packsize, bigobj, bigoff, bigsize; 3832 uint64_t blocksize = ztest_random_blocksize(); 3833 uint64_t chunksize = blocksize; 3834 uint64_t regions = 997; 3835 uint64_t stride = 123456789ULL; 3836 uint64_t width = 9; 3837 dmu_buf_t *bonus_db; 3838 arc_buf_t **bigbuf_arcbufs; 3839 dmu_object_info_t doi; 3840 3841 /* 3842 * This test uses two objects, packobj and bigobj, that are always 3843 * updated together (i.e. in the same tx) so that their contents are 3844 * in sync and can be compared. Their contents relate to each other 3845 * in a simple way: packobj is a dense array of 'bufwad' structures, 3846 * while bigobj is a sparse array of the same bufwads. Specifically, 3847 * for any index n, there are three bufwads that should be identical: 3848 * 3849 * packobj, at offset n * sizeof (bufwad_t) 3850 * bigobj, at the head of the nth chunk 3851 * bigobj, at the tail of the nth chunk 3852 * 3853 * The chunk size is set equal to bigobj block size so that 3854 * dmu_assign_arcbuf() can be tested for object updates. 3855 */ 3856 3857 /* 3858 * Read the directory info. If it's the first time, set things up. 3859 */ 3860 ztest_od_init(&od[0], id, FTAG, 0, DMU_OT_UINT64_OTHER, blocksize, 0); 3861 ztest_od_init(&od[1], id, FTAG, 1, DMU_OT_UINT64_OTHER, 0, chunksize); 3862 3863 if (ztest_object_init(zd, od, sizeof (od), B_FALSE) != 0) 3864 return; 3865 3866 bigobj = od[0].od_object; 3867 packobj = od[1].od_object; 3868 blocksize = od[0].od_blocksize; 3869 chunksize = blocksize; 3870 ASSERT(chunksize == od[1].od_gen); 3871 3872 VERIFY(dmu_object_info(os, bigobj, &doi) == 0); 3873 VERIFY(ISP2(doi.doi_data_block_size)); 3874 VERIFY(chunksize == doi.doi_data_block_size); 3875 VERIFY(chunksize >= 2 * sizeof (bufwad_t)); 3876 3877 /* 3878 * Pick a random index and compute the offsets into packobj and bigobj. 3879 */ 3880 n = ztest_random(regions) * stride + ztest_random(width); 3881 s = 1 + ztest_random(width - 1); 3882 3883 packoff = n * sizeof (bufwad_t); 3884 packsize = s * sizeof (bufwad_t); 3885 3886 bigoff = n * chunksize; 3887 bigsize = s * chunksize; 3888 3889 packbuf = umem_zalloc(packsize, UMEM_NOFAIL); 3890 bigbuf = umem_zalloc(bigsize, UMEM_NOFAIL); 3891 3892 VERIFY3U(0, ==, dmu_bonus_hold(os, bigobj, FTAG, &bonus_db)); 3893 3894 bigbuf_arcbufs = umem_zalloc(2 * s * sizeof (arc_buf_t *), UMEM_NOFAIL); 3895 3896 /* 3897 * Iteration 0 test zcopy for DB_UNCACHED dbufs. 3898 * Iteration 1 test zcopy to already referenced dbufs. 3899 * Iteration 2 test zcopy to dirty dbuf in the same txg. 3900 * Iteration 3 test zcopy to dbuf dirty in previous txg. 3901 * Iteration 4 test zcopy when dbuf is no longer dirty. 3902 * Iteration 5 test zcopy when it can't be done. 3903 * Iteration 6 one more zcopy write. 3904 */ 3905 for (i = 0; i < 7; i++) { 3906 uint64_t j; 3907 uint64_t off; 3908 3909 /* 3910 * In iteration 5 (i == 5) use arcbufs 3911 * that don't match bigobj blksz to test 3912 * dmu_assign_arcbuf() when it can't directly 3913 * assign an arcbuf to a dbuf. 3914 */ 3915 for (j = 0; j < s; j++) { 3916 if (i != 5) { 3917 bigbuf_arcbufs[j] = 3918 dmu_request_arcbuf(bonus_db, chunksize); 3919 } else { 3920 bigbuf_arcbufs[2 * j] = 3921 dmu_request_arcbuf(bonus_db, chunksize / 2); 3922 bigbuf_arcbufs[2 * j + 1] = 3923 dmu_request_arcbuf(bonus_db, chunksize / 2); 3924 } 3925 } 3926 3927 /* 3928 * Get a tx for the mods to both packobj and bigobj. 3929 */ 3930 tx = dmu_tx_create(os); 3931 3932 dmu_tx_hold_write(tx, packobj, packoff, packsize); 3933 dmu_tx_hold_write(tx, bigobj, bigoff, bigsize); 3934 3935 txg = ztest_tx_assign(tx, TXG_MIGHTWAIT, FTAG); 3936 if (txg == 0) { 3937 umem_free(packbuf, packsize); 3938 umem_free(bigbuf, bigsize); 3939 for (j = 0; j < s; j++) { 3940 if (i != 5) { 3941 dmu_return_arcbuf(bigbuf_arcbufs[j]); 3942 } else { 3943 dmu_return_arcbuf( 3944 bigbuf_arcbufs[2 * j]); 3945 dmu_return_arcbuf( 3946 bigbuf_arcbufs[2 * j + 1]); 3947 } 3948 } 3949 umem_free(bigbuf_arcbufs, 2 * s * sizeof (arc_buf_t *)); 3950 dmu_buf_rele(bonus_db, FTAG); 3951 return; 3952 } 3953 3954 /* 3955 * 50% of the time don't read objects in the 1st iteration to 3956 * test dmu_assign_arcbuf() for the case when there're no 3957 * existing dbufs for the specified offsets. 3958 */ 3959 if (i != 0 || ztest_random(2) != 0) { 3960 error = dmu_read(os, packobj, packoff, 3961 packsize, packbuf, DMU_READ_PREFETCH); 3962 ASSERT0(error); 3963 error = dmu_read(os, bigobj, bigoff, bigsize, 3964 bigbuf, DMU_READ_PREFETCH); 3965 ASSERT0(error); 3966 } 3967 compare_and_update_pbbufs(s, packbuf, bigbuf, bigsize, 3968 n, chunksize, txg); 3969 3970 /* 3971 * We've verified all the old bufwads, and made new ones. 3972 * Now write them out. 3973 */ 3974 dmu_write(os, packobj, packoff, packsize, packbuf, tx); 3975 if (ztest_opts.zo_verbose >= 7) { 3976 (void) printf("writing offset %llx size %llx" 3977 " txg %llx\n", 3978 (u_longlong_t)bigoff, 3979 (u_longlong_t)bigsize, 3980 (u_longlong_t)txg); 3981 } 3982 for (off = bigoff, j = 0; j < s; j++, off += chunksize) { 3983 dmu_buf_t *dbt; 3984 if (i != 5) { 3985 bcopy((caddr_t)bigbuf + (off - bigoff), 3986 bigbuf_arcbufs[j]->b_data, chunksize); 3987 } else { 3988 bcopy((caddr_t)bigbuf + (off - bigoff), 3989 bigbuf_arcbufs[2 * j]->b_data, 3990 chunksize / 2); 3991 bcopy((caddr_t)bigbuf + (off - bigoff) + 3992 chunksize / 2, 3993 bigbuf_arcbufs[2 * j + 1]->b_data, 3994 chunksize / 2); 3995 } 3996 3997 if (i == 1) { 3998 VERIFY(dmu_buf_hold(os, bigobj, off, 3999 FTAG, &dbt, DMU_READ_NO_PREFETCH) == 0); 4000 } 4001 if (i != 5) { 4002 dmu_assign_arcbuf(bonus_db, off, 4003 bigbuf_arcbufs[j], tx); 4004 } else { 4005 dmu_assign_arcbuf(bonus_db, off, 4006 bigbuf_arcbufs[2 * j], tx); 4007 dmu_assign_arcbuf(bonus_db, 4008 off + chunksize / 2, 4009 bigbuf_arcbufs[2 * j + 1], tx); 4010 } 4011 if (i == 1) { 4012 dmu_buf_rele(dbt, FTAG); 4013 } 4014 } 4015 dmu_tx_commit(tx); 4016 4017 /* 4018 * Sanity check the stuff we just wrote. 4019 */ 4020 { 4021 void *packcheck = umem_alloc(packsize, UMEM_NOFAIL); 4022 void *bigcheck = umem_alloc(bigsize, UMEM_NOFAIL); 4023 4024 VERIFY(0 == dmu_read(os, packobj, packoff, 4025 packsize, packcheck, DMU_READ_PREFETCH)); 4026 VERIFY(0 == dmu_read(os, bigobj, bigoff, 4027 bigsize, bigcheck, DMU_READ_PREFETCH)); 4028 4029 ASSERT(bcmp(packbuf, packcheck, packsize) == 0); 4030 ASSERT(bcmp(bigbuf, bigcheck, bigsize) == 0); 4031 4032 umem_free(packcheck, packsize); 4033 umem_free(bigcheck, bigsize); 4034 } 4035 if (i == 2) { 4036 txg_wait_open(dmu_objset_pool(os), 0); 4037 } else if (i == 3) { 4038 txg_wait_synced(dmu_objset_pool(os), 0); 4039 } 4040 } 4041 4042 dmu_buf_rele(bonus_db, FTAG); 4043 umem_free(packbuf, packsize); 4044 umem_free(bigbuf, bigsize); 4045 umem_free(bigbuf_arcbufs, 2 * s * sizeof (arc_buf_t *)); 4046} 4047 4048/* ARGSUSED */ 4049void 4050ztest_dmu_write_parallel(ztest_ds_t *zd, uint64_t id) 4051{ 4052 ztest_od_t od[1]; 4053 uint64_t offset = (1ULL << (ztest_random(20) + 43)) + 4054 (ztest_random(ZTEST_RANGE_LOCKS) << SPA_MAXBLOCKSHIFT); 4055 4056 /* 4057 * Have multiple threads write to large offsets in an object 4058 * to verify that parallel writes to an object -- even to the 4059 * same blocks within the object -- doesn't cause any trouble. 4060 */ 4061 ztest_od_init(&od[0], ID_PARALLEL, FTAG, 0, DMU_OT_UINT64_OTHER, 0, 0); 4062 4063 if (ztest_object_init(zd, od, sizeof (od), B_FALSE) != 0) 4064 return; 4065 4066 while (ztest_random(10) != 0) 4067 ztest_io(zd, od[0].od_object, offset); 4068} 4069 4070void 4071ztest_dmu_prealloc(ztest_ds_t *zd, uint64_t id) 4072{ 4073 ztest_od_t od[1]; 4074 uint64_t offset = (1ULL << (ztest_random(4) + SPA_MAXBLOCKSHIFT)) + 4075 (ztest_random(ZTEST_RANGE_LOCKS) << SPA_MAXBLOCKSHIFT); 4076 uint64_t count = ztest_random(20) + 1; 4077 uint64_t blocksize = ztest_random_blocksize(); 4078 void *data; 4079 4080 ztest_od_init(&od[0], id, FTAG, 0, DMU_OT_UINT64_OTHER, blocksize, 0); 4081 4082 if (ztest_object_init(zd, od, sizeof (od), !ztest_random(2)) != 0) 4083 return; 4084 4085 if (ztest_truncate(zd, od[0].od_object, offset, count * blocksize) != 0) 4086 return; 4087 4088 ztest_prealloc(zd, od[0].od_object, offset, count * blocksize); 4089 4090 data = umem_zalloc(blocksize, UMEM_NOFAIL); 4091 4092 while (ztest_random(count) != 0) { 4093 uint64_t randoff = offset + (ztest_random(count) * blocksize); 4094 if (ztest_write(zd, od[0].od_object, randoff, blocksize, 4095 data) != 0) 4096 break; 4097 while (ztest_random(4) != 0) 4098 ztest_io(zd, od[0].od_object, randoff); 4099 } 4100 4101 umem_free(data, blocksize); 4102} 4103 4104/* 4105 * Verify that zap_{create,destroy,add,remove,update} work as expected. 4106 */ 4107#define ZTEST_ZAP_MIN_INTS 1 4108#define ZTEST_ZAP_MAX_INTS 4 4109#define ZTEST_ZAP_MAX_PROPS 1000 4110 4111void 4112ztest_zap(ztest_ds_t *zd, uint64_t id) 4113{ 4114 objset_t *os = zd->zd_os; 4115 ztest_od_t od[1]; 4116 uint64_t object; 4117 uint64_t txg, last_txg; 4118 uint64_t value[ZTEST_ZAP_MAX_INTS]; 4119 uint64_t zl_ints, zl_intsize, prop; 4120 int i, ints; 4121 dmu_tx_t *tx; 4122 char propname[100], txgname[100]; 4123 int error; 4124 char *hc[2] = { "s.acl.h", ".s.open.h.hyLZlg" }; 4125 4126 ztest_od_init(&od[0], id, FTAG, 0, DMU_OT_ZAP_OTHER, 0, 0); 4127 4128 if (ztest_object_init(zd, od, sizeof (od), !ztest_random(2)) != 0) 4129 return; 4130 4131 object = od[0].od_object; 4132 4133 /* 4134 * Generate a known hash collision, and verify that 4135 * we can lookup and remove both entries. 4136 */ 4137 tx = dmu_tx_create(os); 4138 dmu_tx_hold_zap(tx, object, B_TRUE, NULL); 4139 txg = ztest_tx_assign(tx, TXG_MIGHTWAIT, FTAG); 4140 if (txg == 0) 4141 return; 4142 for (i = 0; i < 2; i++) { 4143 value[i] = i; 4144 VERIFY3U(0, ==, zap_add(os, object, hc[i], sizeof (uint64_t), 4145 1, &value[i], tx)); 4146 } 4147 for (i = 0; i < 2; i++) { 4148 VERIFY3U(EEXIST, ==, zap_add(os, object, hc[i], 4149 sizeof (uint64_t), 1, &value[i], tx)); 4150 VERIFY3U(0, ==, 4151 zap_length(os, object, hc[i], &zl_intsize, &zl_ints)); 4152 ASSERT3U(zl_intsize, ==, sizeof (uint64_t)); 4153 ASSERT3U(zl_ints, ==, 1); 4154 } 4155 for (i = 0; i < 2; i++) { 4156 VERIFY3U(0, ==, zap_remove(os, object, hc[i], tx)); 4157 } 4158 dmu_tx_commit(tx); 4159 4160 /* 4161 * Generate a buch of random entries. 4162 */ 4163 ints = MAX(ZTEST_ZAP_MIN_INTS, object % ZTEST_ZAP_MAX_INTS); 4164 4165 prop = ztest_random(ZTEST_ZAP_MAX_PROPS); 4166 (void) sprintf(propname, "prop_%llu", (u_longlong_t)prop); 4167 (void) sprintf(txgname, "txg_%llu", (u_longlong_t)prop); 4168 bzero(value, sizeof (value)); 4169 last_txg = 0; 4170 4171 /* 4172 * If these zap entries already exist, validate their contents. 4173 */ 4174 error = zap_length(os, object, txgname, &zl_intsize, &zl_ints); 4175 if (error == 0) { 4176 ASSERT3U(zl_intsize, ==, sizeof (uint64_t)); 4177 ASSERT3U(zl_ints, ==, 1); 4178 4179 VERIFY(zap_lookup(os, object, txgname, zl_intsize, 4180 zl_ints, &last_txg) == 0); 4181 4182 VERIFY(zap_length(os, object, propname, &zl_intsize, 4183 &zl_ints) == 0); 4184 4185 ASSERT3U(zl_intsize, ==, sizeof (uint64_t)); 4186 ASSERT3U(zl_ints, ==, ints); 4187 4188 VERIFY(zap_lookup(os, object, propname, zl_intsize, 4189 zl_ints, value) == 0); 4190 4191 for (i = 0; i < ints; i++) { 4192 ASSERT3U(value[i], ==, last_txg + object + i); 4193 } 4194 } else { 4195 ASSERT3U(error, ==, ENOENT); 4196 } 4197 4198 /* 4199 * Atomically update two entries in our zap object. 4200 * The first is named txg_%llu, and contains the txg 4201 * in which the property was last updated. The second 4202 * is named prop_%llu, and the nth element of its value 4203 * should be txg + object + n. 4204 */ 4205 tx = dmu_tx_create(os); 4206 dmu_tx_hold_zap(tx, object, B_TRUE, NULL); 4207 txg = ztest_tx_assign(tx, TXG_MIGHTWAIT, FTAG); 4208 if (txg == 0) 4209 return; 4210 4211 if (last_txg > txg) 4212 fatal(0, "zap future leak: old %llu new %llu", last_txg, txg); 4213 4214 for (i = 0; i < ints; i++) 4215 value[i] = txg + object + i; 4216 4217 VERIFY3U(0, ==, zap_update(os, object, txgname, sizeof (uint64_t), 4218 1, &txg, tx)); 4219 VERIFY3U(0, ==, zap_update(os, object, propname, sizeof (uint64_t), 4220 ints, value, tx)); 4221 4222 dmu_tx_commit(tx); 4223 4224 /* 4225 * Remove a random pair of entries. 4226 */ 4227 prop = ztest_random(ZTEST_ZAP_MAX_PROPS); 4228 (void) sprintf(propname, "prop_%llu", (u_longlong_t)prop); 4229 (void) sprintf(txgname, "txg_%llu", (u_longlong_t)prop); 4230 4231 error = zap_length(os, object, txgname, &zl_intsize, &zl_ints); 4232 4233 if (error == ENOENT) 4234 return; 4235 4236 ASSERT0(error); 4237 4238 tx = dmu_tx_create(os); 4239 dmu_tx_hold_zap(tx, object, B_TRUE, NULL); 4240 txg = ztest_tx_assign(tx, TXG_MIGHTWAIT, FTAG); 4241 if (txg == 0) 4242 return; 4243 VERIFY3U(0, ==, zap_remove(os, object, txgname, tx)); 4244 VERIFY3U(0, ==, zap_remove(os, object, propname, tx)); 4245 dmu_tx_commit(tx); 4246} 4247 4248/* 4249 * Testcase to test the upgrading of a microzap to fatzap. 4250 */ 4251void 4252ztest_fzap(ztest_ds_t *zd, uint64_t id) 4253{ 4254 objset_t *os = zd->zd_os; 4255 ztest_od_t od[1]; 4256 uint64_t object, txg; 4257 4258 ztest_od_init(&od[0], id, FTAG, 0, DMU_OT_ZAP_OTHER, 0, 0); 4259 4260 if (ztest_object_init(zd, od, sizeof (od), !ztest_random(2)) != 0) 4261 return; 4262 4263 object = od[0].od_object; 4264 4265 /* 4266 * Add entries to this ZAP and make sure it spills over 4267 * and gets upgraded to a fatzap. Also, since we are adding 4268 * 2050 entries we should see ptrtbl growth and leaf-block split. 4269 */ 4270 for (int i = 0; i < 2050; i++) { 4271 char name[ZFS_MAX_DATASET_NAME_LEN]; 4272 uint64_t value = i; 4273 dmu_tx_t *tx; 4274 int error; 4275 4276 (void) snprintf(name, sizeof (name), "fzap-%llu-%llu", 4277 id, value); 4278 4279 tx = dmu_tx_create(os); 4280 dmu_tx_hold_zap(tx, object, B_TRUE, name); 4281 txg = ztest_tx_assign(tx, TXG_MIGHTWAIT, FTAG); 4282 if (txg == 0) 4283 return; 4284 error = zap_add(os, object, name, sizeof (uint64_t), 1, 4285 &value, tx); 4286 ASSERT(error == 0 || error == EEXIST); 4287 dmu_tx_commit(tx); 4288 } 4289} 4290 4291/* ARGSUSED */ 4292void 4293ztest_zap_parallel(ztest_ds_t *zd, uint64_t id) 4294{ 4295 objset_t *os = zd->zd_os; 4296 ztest_od_t od[1]; 4297 uint64_t txg, object, count, wsize, wc, zl_wsize, zl_wc; 4298 dmu_tx_t *tx; 4299 int i, namelen, error; 4300 int micro = ztest_random(2); 4301 char name[20], string_value[20]; 4302 void *data; 4303 4304 ztest_od_init(&od[0], ID_PARALLEL, FTAG, micro, DMU_OT_ZAP_OTHER, 0, 0); 4305 4306 if (ztest_object_init(zd, od, sizeof (od), B_FALSE) != 0) 4307 return; 4308 4309 object = od[0].od_object; 4310 4311 /* 4312 * Generate a random name of the form 'xxx.....' where each 4313 * x is a random printable character and the dots are dots. 4314 * There are 94 such characters, and the name length goes from 4315 * 6 to 20, so there are 94^3 * 15 = 12,458,760 possible names. 4316 */ 4317 namelen = ztest_random(sizeof (name) - 5) + 5 + 1; 4318 4319 for (i = 0; i < 3; i++) 4320 name[i] = '!' + ztest_random('~' - '!' + 1); 4321 for (; i < namelen - 1; i++) 4322 name[i] = '.'; 4323 name[i] = '\0'; 4324 4325 if ((namelen & 1) || micro) { 4326 wsize = sizeof (txg); 4327 wc = 1; 4328 data = &txg; 4329 } else { 4330 wsize = 1; 4331 wc = namelen; 4332 data = string_value; 4333 } 4334 4335 count = -1ULL; 4336 VERIFY0(zap_count(os, object, &count)); 4337 ASSERT(count != -1ULL); 4338 4339 /* 4340 * Select an operation: length, lookup, add, update, remove. 4341 */ 4342 i = ztest_random(5); 4343 4344 if (i >= 2) { 4345 tx = dmu_tx_create(os); 4346 dmu_tx_hold_zap(tx, object, B_TRUE, NULL); 4347 txg = ztest_tx_assign(tx, TXG_MIGHTWAIT, FTAG); 4348 if (txg == 0) 4349 return; 4350 bcopy(name, string_value, namelen); 4351 } else { 4352 tx = NULL; 4353 txg = 0; 4354 bzero(string_value, namelen); 4355 } 4356 4357 switch (i) { 4358 4359 case 0: 4360 error = zap_length(os, object, name, &zl_wsize, &zl_wc); 4361 if (error == 0) { 4362 ASSERT3U(wsize, ==, zl_wsize); 4363 ASSERT3U(wc, ==, zl_wc); 4364 } else { 4365 ASSERT3U(error, ==, ENOENT); 4366 } 4367 break; 4368 4369 case 1: 4370 error = zap_lookup(os, object, name, wsize, wc, data); 4371 if (error == 0) { 4372 if (data == string_value && 4373 bcmp(name, data, namelen) != 0) 4374 fatal(0, "name '%s' != val '%s' len %d", 4375 name, data, namelen); 4376 } else { 4377 ASSERT3U(error, ==, ENOENT); 4378 } 4379 break; 4380 4381 case 2: 4382 error = zap_add(os, object, name, wsize, wc, data, tx); 4383 ASSERT(error == 0 || error == EEXIST); 4384 break; 4385 4386 case 3: 4387 VERIFY(zap_update(os, object, name, wsize, wc, data, tx) == 0); 4388 break; 4389 4390 case 4: 4391 error = zap_remove(os, object, name, tx); 4392 ASSERT(error == 0 || error == ENOENT); 4393 break; 4394 } 4395 4396 if (tx != NULL) 4397 dmu_tx_commit(tx); 4398} 4399 4400/* 4401 * Commit callback data. 4402 */ 4403typedef struct ztest_cb_data { 4404 list_node_t zcd_node; 4405 uint64_t zcd_txg; 4406 int zcd_expected_err; 4407 boolean_t zcd_added; 4408 boolean_t zcd_called; 4409 spa_t *zcd_spa; 4410} ztest_cb_data_t; 4411 4412/* This is the actual commit callback function */ 4413static void 4414ztest_commit_callback(void *arg, int error) 4415{ 4416 ztest_cb_data_t *data = arg; 4417 uint64_t synced_txg; 4418 4419 VERIFY(data != NULL); 4420 VERIFY3S(data->zcd_expected_err, ==, error); 4421 VERIFY(!data->zcd_called); 4422 4423 synced_txg = spa_last_synced_txg(data->zcd_spa); 4424 if (data->zcd_txg > synced_txg) 4425 fatal(0, "commit callback of txg %" PRIu64 " called prematurely" 4426 ", last synced txg = %" PRIu64 "\n", data->zcd_txg, 4427 synced_txg); 4428 4429 data->zcd_called = B_TRUE; 4430 4431 if (error == ECANCELED) { 4432 ASSERT0(data->zcd_txg); 4433 ASSERT(!data->zcd_added); 4434 4435 /* 4436 * The private callback data should be destroyed here, but 4437 * since we are going to check the zcd_called field after 4438 * dmu_tx_abort(), we will destroy it there. 4439 */ 4440 return; 4441 } 4442 4443 /* Was this callback added to the global callback list? */ 4444 if (!data->zcd_added) 4445 goto out; 4446 4447 ASSERT3U(data->zcd_txg, !=, 0); 4448 4449 /* Remove our callback from the list */ 4450 (void) mutex_lock(&zcl.zcl_callbacks_lock); 4451 list_remove(&zcl.zcl_callbacks, data); 4452 (void) mutex_unlock(&zcl.zcl_callbacks_lock); 4453 4454out: 4455 umem_free(data, sizeof (ztest_cb_data_t)); 4456} 4457 4458/* Allocate and initialize callback data structure */ 4459static ztest_cb_data_t * 4460ztest_create_cb_data(objset_t *os, uint64_t txg) 4461{ 4462 ztest_cb_data_t *cb_data; 4463 4464 cb_data = umem_zalloc(sizeof (ztest_cb_data_t), UMEM_NOFAIL); 4465 4466 cb_data->zcd_txg = txg; 4467 cb_data->zcd_spa = dmu_objset_spa(os); 4468 4469 return (cb_data); 4470} 4471 4472/* 4473 * If a number of txgs equal to this threshold have been created after a commit 4474 * callback has been registered but not called, then we assume there is an 4475 * implementation bug. 4476 */ 4477#define ZTEST_COMMIT_CALLBACK_THRESH (TXG_CONCURRENT_STATES + 2) 4478 4479/* 4480 * Commit callback test. 4481 */ 4482void 4483ztest_dmu_commit_callbacks(ztest_ds_t *zd, uint64_t id) 4484{ 4485 objset_t *os = zd->zd_os; 4486 ztest_od_t od[1]; 4487 dmu_tx_t *tx; 4488 ztest_cb_data_t *cb_data[3], *tmp_cb; 4489 uint64_t old_txg, txg; 4490 int i, error; 4491 4492 ztest_od_init(&od[0], id, FTAG, 0, DMU_OT_UINT64_OTHER, 0, 0); 4493 4494 if (ztest_object_init(zd, od, sizeof (od), B_FALSE) != 0) 4495 return; 4496 4497 tx = dmu_tx_create(os); 4498 4499 cb_data[0] = ztest_create_cb_data(os, 0); 4500 dmu_tx_callback_register(tx, ztest_commit_callback, cb_data[0]); 4501 4502 dmu_tx_hold_write(tx, od[0].od_object, 0, sizeof (uint64_t)); 4503 4504 /* Every once in a while, abort the transaction on purpose */ 4505 if (ztest_random(100) == 0) 4506 error = -1; 4507 4508 if (!error) 4509 error = dmu_tx_assign(tx, TXG_NOWAIT); 4510 4511 txg = error ? 0 : dmu_tx_get_txg(tx); 4512 4513 cb_data[0]->zcd_txg = txg; 4514 cb_data[1] = ztest_create_cb_data(os, txg); 4515 dmu_tx_callback_register(tx, ztest_commit_callback, cb_data[1]); 4516 4517 if (error) { 4518 /* 4519 * It's not a strict requirement to call the registered 4520 * callbacks from inside dmu_tx_abort(), but that's what 4521 * it's supposed to happen in the current implementation 4522 * so we will check for that. 4523 */ 4524 for (i = 0; i < 2; i++) { 4525 cb_data[i]->zcd_expected_err = ECANCELED; 4526 VERIFY(!cb_data[i]->zcd_called); 4527 } 4528 4529 dmu_tx_abort(tx); 4530 4531 for (i = 0; i < 2; i++) { 4532 VERIFY(cb_data[i]->zcd_called); 4533 umem_free(cb_data[i], sizeof (ztest_cb_data_t)); 4534 } 4535 4536 return; 4537 } 4538 4539 cb_data[2] = ztest_create_cb_data(os, txg); 4540 dmu_tx_callback_register(tx, ztest_commit_callback, cb_data[2]); 4541 4542 /* 4543 * Read existing data to make sure there isn't a future leak. 4544 */ 4545 VERIFY(0 == dmu_read(os, od[0].od_object, 0, sizeof (uint64_t), 4546 &old_txg, DMU_READ_PREFETCH)); 4547 4548 if (old_txg > txg) 4549 fatal(0, "future leak: got %" PRIu64 ", open txg is %" PRIu64, 4550 old_txg, txg); 4551 4552 dmu_write(os, od[0].od_object, 0, sizeof (uint64_t), &txg, tx); 4553 4554 (void) mutex_lock(&zcl.zcl_callbacks_lock); 4555 4556 /* 4557 * Since commit callbacks don't have any ordering requirement and since 4558 * it is theoretically possible for a commit callback to be called 4559 * after an arbitrary amount of time has elapsed since its txg has been 4560 * synced, it is difficult to reliably determine whether a commit 4561 * callback hasn't been called due to high load or due to a flawed 4562 * implementation. 4563 * 4564 * In practice, we will assume that if after a certain number of txgs a 4565 * commit callback hasn't been called, then most likely there's an 4566 * implementation bug.. 4567 */ 4568 tmp_cb = list_head(&zcl.zcl_callbacks); 4569 if (tmp_cb != NULL && 4570 (txg - ZTEST_COMMIT_CALLBACK_THRESH) > tmp_cb->zcd_txg) { 4571 fatal(0, "Commit callback threshold exceeded, oldest txg: %" 4572 PRIu64 ", open txg: %" PRIu64 "\n", tmp_cb->zcd_txg, txg); 4573 } 4574 4575 /* 4576 * Let's find the place to insert our callbacks. 4577 * 4578 * Even though the list is ordered by txg, it is possible for the 4579 * insertion point to not be the end because our txg may already be 4580 * quiescing at this point and other callbacks in the open txg 4581 * (from other objsets) may have sneaked in. 4582 */ 4583 tmp_cb = list_tail(&zcl.zcl_callbacks); 4584 while (tmp_cb != NULL && tmp_cb->zcd_txg > txg) 4585 tmp_cb = list_prev(&zcl.zcl_callbacks, tmp_cb); 4586 4587 /* Add the 3 callbacks to the list */ 4588 for (i = 0; i < 3; i++) { 4589 if (tmp_cb == NULL) 4590 list_insert_head(&zcl.zcl_callbacks, cb_data[i]); 4591 else 4592 list_insert_after(&zcl.zcl_callbacks, tmp_cb, 4593 cb_data[i]); 4594 4595 cb_data[i]->zcd_added = B_TRUE; 4596 VERIFY(!cb_data[i]->zcd_called); 4597 4598 tmp_cb = cb_data[i]; 4599 } 4600 4601 (void) mutex_unlock(&zcl.zcl_callbacks_lock); 4602 4603 dmu_tx_commit(tx); 4604} 4605 4606/* ARGSUSED */ 4607void 4608ztest_dsl_prop_get_set(ztest_ds_t *zd, uint64_t id) 4609{ 4610 zfs_prop_t proplist[] = { 4611 ZFS_PROP_CHECKSUM, 4612 ZFS_PROP_COMPRESSION, 4613 ZFS_PROP_COPIES, 4614 ZFS_PROP_DEDUP 4615 }; 4616 4617 (void) rw_rdlock(&ztest_name_lock); 4618 4619 for (int p = 0; p < sizeof (proplist) / sizeof (proplist[0]); p++) 4620 (void) ztest_dsl_prop_set_uint64(zd->zd_name, proplist[p], 4621 ztest_random_dsl_prop(proplist[p]), (int)ztest_random(2)); 4622 4623 (void) rw_unlock(&ztest_name_lock); 4624} 4625 4626/* ARGSUSED */ 4627void 4628ztest_spa_prop_get_set(ztest_ds_t *zd, uint64_t id) 4629{ 4630 nvlist_t *props = NULL; 4631 4632 (void) rw_rdlock(&ztest_name_lock); 4633 4634 (void) ztest_spa_prop_set_uint64(ZPOOL_PROP_DEDUPDITTO, 4635 ZIO_DEDUPDITTO_MIN + ztest_random(ZIO_DEDUPDITTO_MIN)); 4636 4637 VERIFY0(spa_prop_get(ztest_spa, &props)); 4638 4639 if (ztest_opts.zo_verbose >= 6) 4640 dump_nvlist(props, 4); 4641 4642 nvlist_free(props); 4643 4644 (void) rw_unlock(&ztest_name_lock); 4645} 4646 4647static int 4648user_release_one(const char *snapname, const char *holdname) 4649{ 4650 nvlist_t *snaps, *holds; 4651 int error; 4652 4653 snaps = fnvlist_alloc(); 4654 holds = fnvlist_alloc(); 4655 fnvlist_add_boolean(holds, holdname); 4656 fnvlist_add_nvlist(snaps, snapname, holds); 4657 fnvlist_free(holds); 4658 error = dsl_dataset_user_release(snaps, NULL); 4659 fnvlist_free(snaps); 4660 return (error); 4661} 4662 4663/* 4664 * Test snapshot hold/release and deferred destroy. 4665 */ 4666void 4667ztest_dmu_snapshot_hold(ztest_ds_t *zd, uint64_t id) 4668{ 4669 int error; 4670 objset_t *os = zd->zd_os; 4671 objset_t *origin; 4672 char snapname[100]; 4673 char fullname[100]; 4674 char clonename[100]; 4675 char tag[100]; 4676 char osname[ZFS_MAX_DATASET_NAME_LEN]; 4677 nvlist_t *holds; 4678 4679 (void) rw_rdlock(&ztest_name_lock); 4680 4681 dmu_objset_name(os, osname); 4682 4683 (void) snprintf(snapname, sizeof (snapname), "sh1_%llu", id); 4684 (void) snprintf(fullname, sizeof (fullname), "%s@%s", osname, snapname); 4685 (void) snprintf(clonename, sizeof (clonename), 4686 "%s/ch1_%llu", osname, id); 4687 (void) snprintf(tag, sizeof (tag), "tag_%llu", id); 4688 4689 /* 4690 * Clean up from any previous run. 4691 */ 4692 error = dsl_destroy_head(clonename); 4693 if (error != ENOENT) 4694 ASSERT0(error); 4695 error = user_release_one(fullname, tag); 4696 if (error != ESRCH && error != ENOENT) 4697 ASSERT0(error); 4698 error = dsl_destroy_snapshot(fullname, B_FALSE); 4699 if (error != ENOENT) 4700 ASSERT0(error); 4701 4702 /* 4703 * Create snapshot, clone it, mark snap for deferred destroy, 4704 * destroy clone, verify snap was also destroyed. 4705 */ 4706 error = dmu_objset_snapshot_one(osname, snapname); 4707 if (error) { 4708 if (error == ENOSPC) { 4709 ztest_record_enospc("dmu_objset_snapshot"); 4710 goto out; 4711 } 4712 fatal(0, "dmu_objset_snapshot(%s) = %d", fullname, error); 4713 } 4714 4715 error = dmu_objset_clone(clonename, fullname); 4716 if (error) { 4717 if (error == ENOSPC) { 4718 ztest_record_enospc("dmu_objset_clone"); 4719 goto out; 4720 } 4721 fatal(0, "dmu_objset_clone(%s) = %d", clonename, error); 4722 } 4723 4724 error = dsl_destroy_snapshot(fullname, B_TRUE); 4725 if (error) { 4726 fatal(0, "dsl_destroy_snapshot(%s, B_TRUE) = %d", 4727 fullname, error); 4728 } 4729 4730 error = dsl_destroy_head(clonename); 4731 if (error) 4732 fatal(0, "dsl_destroy_head(%s) = %d", clonename, error); 4733 4734 error = dmu_objset_hold(fullname, FTAG, &origin); 4735 if (error != ENOENT) 4736 fatal(0, "dmu_objset_hold(%s) = %d", fullname, error); 4737 4738 /* 4739 * Create snapshot, add temporary hold, verify that we can't 4740 * destroy a held snapshot, mark for deferred destroy, 4741 * release hold, verify snapshot was destroyed. 4742 */ 4743 error = dmu_objset_snapshot_one(osname, snapname); 4744 if (error) { 4745 if (error == ENOSPC) { 4746 ztest_record_enospc("dmu_objset_snapshot"); 4747 goto out; 4748 } 4749 fatal(0, "dmu_objset_snapshot(%s) = %d", fullname, error); 4750 } 4751 4752 holds = fnvlist_alloc(); 4753 fnvlist_add_string(holds, fullname, tag); 4754 error = dsl_dataset_user_hold(holds, 0, NULL); 4755 fnvlist_free(holds); 4756 4757 if (error == ENOSPC) { 4758 ztest_record_enospc("dsl_dataset_user_hold"); 4759 goto out; 4760 } else if (error) { 4761 fatal(0, "dsl_dataset_user_hold(%s, %s) = %u", 4762 fullname, tag, error); 4763 } 4764 4765 error = dsl_destroy_snapshot(fullname, B_FALSE); 4766 if (error != EBUSY) { 4767 fatal(0, "dsl_destroy_snapshot(%s, B_FALSE) = %d", 4768 fullname, error); 4769 } 4770 4771 error = dsl_destroy_snapshot(fullname, B_TRUE); 4772 if (error) { 4773 fatal(0, "dsl_destroy_snapshot(%s, B_TRUE) = %d", 4774 fullname, error); 4775 } 4776 4777 error = user_release_one(fullname, tag); 4778 if (error) 4779 fatal(0, "user_release_one(%s, %s) = %d", fullname, tag, error); 4780 4781 VERIFY3U(dmu_objset_hold(fullname, FTAG, &origin), ==, ENOENT); 4782 4783out: 4784 (void) rw_unlock(&ztest_name_lock); 4785} 4786 4787/* 4788 * Inject random faults into the on-disk data. 4789 */ 4790/* ARGSUSED */ 4791void 4792ztest_fault_inject(ztest_ds_t *zd, uint64_t id) 4793{ 4794 ztest_shared_t *zs = ztest_shared; 4795 spa_t *spa = ztest_spa; 4796 int fd; 4797 uint64_t offset; 4798 uint64_t leaves; 4799 uint64_t bad = 0x1990c0ffeedecadeULL; 4800 uint64_t top, leaf; 4801 char path0[MAXPATHLEN]; 4802 char pathrand[MAXPATHLEN]; 4803 size_t fsize; 4804 int bshift = SPA_MAXBLOCKSHIFT + 2; 4805 int iters = 1000; 4806 int maxfaults; 4807 int mirror_save; 4808 vdev_t *vd0 = NULL; 4809 uint64_t guid0 = 0; 4810 boolean_t islog = B_FALSE; 4811 4812 VERIFY(mutex_lock(&ztest_vdev_lock) == 0); 4813 maxfaults = MAXFAULTS(); 4814 leaves = MAX(zs->zs_mirrors, 1) * ztest_opts.zo_raidz; 4815 mirror_save = zs->zs_mirrors; 4816 VERIFY(mutex_unlock(&ztest_vdev_lock) == 0); 4817 4818 ASSERT(leaves >= 1); 4819 4820 /* 4821 * Grab the name lock as reader. There are some operations 4822 * which don't like to have their vdevs changed while 4823 * they are in progress (i.e. spa_change_guid). Those 4824 * operations will have grabbed the name lock as writer. 4825 */ 4826 (void) rw_rdlock(&ztest_name_lock); 4827 4828 /* 4829 * We need SCL_STATE here because we're going to look at vd0->vdev_tsd. 4830 */ 4831 spa_config_enter(spa, SCL_STATE, FTAG, RW_READER); 4832 4833 if (ztest_random(2) == 0) { 4834 /* 4835 * Inject errors on a normal data device or slog device. 4836 */ 4837 top = ztest_random_vdev_top(spa, B_TRUE); 4838 leaf = ztest_random(leaves) + zs->zs_splits; 4839 4840 /* 4841 * Generate paths to the first leaf in this top-level vdev, 4842 * and to the random leaf we selected. We'll induce transient 4843 * write failures and random online/offline activity on leaf 0, 4844 * and we'll write random garbage to the randomly chosen leaf. 4845 */ 4846 (void) snprintf(path0, sizeof (path0), ztest_dev_template, 4847 ztest_opts.zo_dir, ztest_opts.zo_pool, 4848 top * leaves + zs->zs_splits); 4849 (void) snprintf(pathrand, sizeof (pathrand), ztest_dev_template, 4850 ztest_opts.zo_dir, ztest_opts.zo_pool, 4851 top * leaves + leaf); 4852 4853 vd0 = vdev_lookup_by_path(spa->spa_root_vdev, path0); 4854 if (vd0 != NULL && vd0->vdev_top->vdev_islog) 4855 islog = B_TRUE; 4856 4857 /* 4858 * If the top-level vdev needs to be resilvered 4859 * then we only allow faults on the device that is 4860 * resilvering. 4861 */ 4862 if (vd0 != NULL && maxfaults != 1 && 4863 (!vdev_resilver_needed(vd0->vdev_top, NULL, NULL) || 4864 vd0->vdev_resilver_txg != 0)) { 4865 /* 4866 * Make vd0 explicitly claim to be unreadable, 4867 * or unwriteable, or reach behind its back 4868 * and close the underlying fd. We can do this if 4869 * maxfaults == 0 because we'll fail and reexecute, 4870 * and we can do it if maxfaults >= 2 because we'll 4871 * have enough redundancy. If maxfaults == 1, the 4872 * combination of this with injection of random data 4873 * corruption below exceeds the pool's fault tolerance. 4874 */ 4875 vdev_file_t *vf = vd0->vdev_tsd; 4876 4877 if (vf != NULL && ztest_random(3) == 0) { 4878 (void) close(vf->vf_vnode->v_fd); 4879 vf->vf_vnode->v_fd = -1; 4880 } else if (ztest_random(2) == 0) { 4881 vd0->vdev_cant_read = B_TRUE; 4882 } else { 4883 vd0->vdev_cant_write = B_TRUE; 4884 } 4885 guid0 = vd0->vdev_guid; 4886 } 4887 } else { 4888 /* 4889 * Inject errors on an l2cache device. 4890 */ 4891 spa_aux_vdev_t *sav = &spa->spa_l2cache; 4892 4893 if (sav->sav_count == 0) { 4894 spa_config_exit(spa, SCL_STATE, FTAG); 4895 (void) rw_unlock(&ztest_name_lock); 4896 return; 4897 } 4898 vd0 = sav->sav_vdevs[ztest_random(sav->sav_count)]; 4899 guid0 = vd0->vdev_guid; 4900 (void) strcpy(path0, vd0->vdev_path); 4901 (void) strcpy(pathrand, vd0->vdev_path); 4902 4903 leaf = 0; 4904 leaves = 1; 4905 maxfaults = INT_MAX; /* no limit on cache devices */ 4906 } 4907 4908 spa_config_exit(spa, SCL_STATE, FTAG); 4909 (void) rw_unlock(&ztest_name_lock); 4910 4911 /* 4912 * If we can tolerate two or more faults, or we're dealing 4913 * with a slog, randomly online/offline vd0. 4914 */ 4915 if ((maxfaults >= 2 || islog) && guid0 != 0) { 4916 if (ztest_random(10) < 6) { 4917 int flags = (ztest_random(2) == 0 ? 4918 ZFS_OFFLINE_TEMPORARY : 0); 4919 4920 /* 4921 * We have to grab the zs_name_lock as writer to 4922 * prevent a race between offlining a slog and 4923 * destroying a dataset. Offlining the slog will 4924 * grab a reference on the dataset which may cause 4925 * dmu_objset_destroy() to fail with EBUSY thus 4926 * leaving the dataset in an inconsistent state. 4927 */ 4928 if (islog) 4929 (void) rw_wrlock(&ztest_name_lock); 4930 4931 VERIFY(vdev_offline(spa, guid0, flags) != EBUSY); 4932 4933 if (islog) 4934 (void) rw_unlock(&ztest_name_lock); 4935 } else { 4936 /* 4937 * Ideally we would like to be able to randomly 4938 * call vdev_[on|off]line without holding locks 4939 * to force unpredictable failures but the side 4940 * effects of vdev_[on|off]line prevent us from 4941 * doing so. We grab the ztest_vdev_lock here to 4942 * prevent a race between injection testing and 4943 * aux_vdev removal. 4944 */ 4945 VERIFY(mutex_lock(&ztest_vdev_lock) == 0); 4946 (void) vdev_online(spa, guid0, 0, NULL); 4947 VERIFY(mutex_unlock(&ztest_vdev_lock) == 0); 4948 } 4949 } 4950 4951 if (maxfaults == 0) 4952 return; 4953 4954 /* 4955 * We have at least single-fault tolerance, so inject data corruption. 4956 */ 4957 fd = open(pathrand, O_RDWR); 4958 4959 if (fd == -1) /* we hit a gap in the device namespace */ 4960 return; 4961 4962 fsize = lseek(fd, 0, SEEK_END); 4963 4964 while (--iters != 0) { 4965 /* 4966 * The offset must be chosen carefully to ensure that 4967 * we do not inject a given logical block with errors 4968 * on two different leaf devices, because ZFS can not 4969 * tolerate that (if maxfaults==1). 4970 * 4971 * We divide each leaf into chunks of size 4972 * (# leaves * SPA_MAXBLOCKSIZE * 4). Within each chunk 4973 * there is a series of ranges to which we can inject errors. 4974 * Each range can accept errors on only a single leaf vdev. 4975 * The error injection ranges are separated by ranges 4976 * which we will not inject errors on any device (DMZs). 4977 * Each DMZ must be large enough such that a single block 4978 * can not straddle it, so that a single block can not be 4979 * a target in two different injection ranges (on different 4980 * leaf vdevs). 4981 * 4982 * For example, with 3 leaves, each chunk looks like: 4983 * 0 to 32M: injection range for leaf 0 4984 * 32M to 64M: DMZ - no injection allowed 4985 * 64M to 96M: injection range for leaf 1 4986 * 96M to 128M: DMZ - no injection allowed 4987 * 128M to 160M: injection range for leaf 2 4988 * 160M to 192M: DMZ - no injection allowed 4989 */ 4990 offset = ztest_random(fsize / (leaves << bshift)) * 4991 (leaves << bshift) + (leaf << bshift) + 4992 (ztest_random(1ULL << (bshift - 1)) & -8ULL); 4993 4994 /* 4995 * Only allow damage to the labels at one end of the vdev. 4996 * 4997 * If all labels are damaged, the device will be totally 4998 * inaccessible, which will result in loss of data, 4999 * because we also damage (parts of) the other side of 5000 * the mirror/raidz. 5001 * 5002 * Additionally, we will always have both an even and an 5003 * odd label, so that we can handle crashes in the 5004 * middle of vdev_config_sync(). 5005 */ 5006 if ((leaf & 1) == 0 && offset < VDEV_LABEL_START_SIZE) 5007 continue; 5008 5009 /* 5010 * The two end labels are stored at the "end" of the disk, but 5011 * the end of the disk (vdev_psize) is aligned to 5012 * sizeof (vdev_label_t). 5013 */ 5014 uint64_t psize = P2ALIGN(fsize, sizeof (vdev_label_t)); 5015 if ((leaf & 1) == 1 && 5016 offset + sizeof (bad) > psize - VDEV_LABEL_END_SIZE) 5017 continue; 5018 5019 VERIFY(mutex_lock(&ztest_vdev_lock) == 0); 5020 if (mirror_save != zs->zs_mirrors) { 5021 VERIFY(mutex_unlock(&ztest_vdev_lock) == 0); 5022 (void) close(fd); 5023 return; 5024 } 5025 5026 if (pwrite(fd, &bad, sizeof (bad), offset) != sizeof (bad)) 5027 fatal(1, "can't inject bad word at 0x%llx in %s", 5028 offset, pathrand); 5029 5030 VERIFY(mutex_unlock(&ztest_vdev_lock) == 0); 5031 5032 if (ztest_opts.zo_verbose >= 7) 5033 (void) printf("injected bad word into %s," 5034 " offset 0x%llx\n", pathrand, (u_longlong_t)offset); 5035 } 5036 5037 (void) close(fd); 5038} 5039 5040/* 5041 * Verify that DDT repair works as expected. 5042 */ 5043void 5044ztest_ddt_repair(ztest_ds_t *zd, uint64_t id) 5045{ 5046 ztest_shared_t *zs = ztest_shared; 5047 spa_t *spa = ztest_spa; 5048 objset_t *os = zd->zd_os; 5049 ztest_od_t od[1]; 5050 uint64_t object, blocksize, txg, pattern, psize; 5051 enum zio_checksum checksum = spa_dedup_checksum(spa); 5052 dmu_buf_t *db; 5053 dmu_tx_t *tx; 5054 void *buf; 5055 blkptr_t blk; 5056 int copies = 2 * ZIO_DEDUPDITTO_MIN; 5057 5058 blocksize = ztest_random_blocksize(); 5059 blocksize = MIN(blocksize, 2048); /* because we write so many */ 5060 5061 ztest_od_init(&od[0], id, FTAG, 0, DMU_OT_UINT64_OTHER, blocksize, 0); 5062 5063 if (ztest_object_init(zd, od, sizeof (od), B_FALSE) != 0) 5064 return; 5065 5066 /* 5067 * Take the name lock as writer to prevent anyone else from changing 5068 * the pool and dataset properies we need to maintain during this test. 5069 */ 5070 (void) rw_wrlock(&ztest_name_lock); 5071 5072 if (ztest_dsl_prop_set_uint64(zd->zd_name, ZFS_PROP_DEDUP, checksum, 5073 B_FALSE) != 0 || 5074 ztest_dsl_prop_set_uint64(zd->zd_name, ZFS_PROP_COPIES, 1, 5075 B_FALSE) != 0) { 5076 (void) rw_unlock(&ztest_name_lock); 5077 return; 5078 } 5079 5080 dmu_objset_stats_t dds; 5081 dsl_pool_config_enter(dmu_objset_pool(os), FTAG); 5082 dmu_objset_fast_stat(os, &dds); 5083 dsl_pool_config_exit(dmu_objset_pool(os), FTAG); 5084 5085 object = od[0].od_object; 5086 blocksize = od[0].od_blocksize; 5087 pattern = zs->zs_guid ^ dds.dds_guid; 5088 5089 ASSERT(object != 0); 5090 5091 tx = dmu_tx_create(os); 5092 dmu_tx_hold_write(tx, object, 0, copies * blocksize); 5093 txg = ztest_tx_assign(tx, TXG_WAIT, FTAG); 5094 if (txg == 0) { 5095 (void) rw_unlock(&ztest_name_lock); 5096 return; 5097 } 5098 5099 /* 5100 * Write all the copies of our block. 5101 */ 5102 for (int i = 0; i < copies; i++) { 5103 uint64_t offset = i * blocksize; 5104 int error = dmu_buf_hold(os, object, offset, FTAG, &db, 5105 DMU_READ_NO_PREFETCH); 5106 if (error != 0) { 5107 fatal(B_FALSE, "dmu_buf_hold(%p, %llu, %llu) = %u", 5108 os, (long long)object, (long long) offset, error); 5109 } 5110 ASSERT(db->db_offset == offset); 5111 ASSERT(db->db_size == blocksize); 5112 ASSERT(ztest_pattern_match(db->db_data, db->db_size, pattern) || 5113 ztest_pattern_match(db->db_data, db->db_size, 0ULL)); 5114 dmu_buf_will_fill(db, tx); 5115 ztest_pattern_set(db->db_data, db->db_size, pattern); 5116 dmu_buf_rele(db, FTAG); 5117 } 5118 5119 dmu_tx_commit(tx); 5120 txg_wait_synced(spa_get_dsl(spa), txg); 5121 5122 /* 5123 * Find out what block we got. 5124 */ 5125 VERIFY0(dmu_buf_hold(os, object, 0, FTAG, &db, 5126 DMU_READ_NO_PREFETCH)); 5127 blk = *((dmu_buf_impl_t *)db)->db_blkptr; 5128 dmu_buf_rele(db, FTAG); 5129 5130 /* 5131 * Damage the block. Dedup-ditto will save us when we read it later. 5132 */ 5133 psize = BP_GET_PSIZE(&blk); 5134 buf = zio_buf_alloc(psize); 5135 ztest_pattern_set(buf, psize, ~pattern); 5136 5137 (void) zio_wait(zio_rewrite(NULL, spa, 0, &blk, 5138 buf, psize, NULL, NULL, ZIO_PRIORITY_SYNC_WRITE, 5139 ZIO_FLAG_CANFAIL | ZIO_FLAG_INDUCE_DAMAGE, NULL)); 5140 5141 zio_buf_free(buf, psize); 5142 5143 (void) rw_unlock(&ztest_name_lock); 5144} 5145 5146/* 5147 * Scrub the pool. 5148 */ 5149/* ARGSUSED */ 5150void 5151ztest_scrub(ztest_ds_t *zd, uint64_t id) 5152{ 5153 spa_t *spa = ztest_spa; 5154 5155 (void) spa_scan(spa, POOL_SCAN_SCRUB); 5156 (void) poll(NULL, 0, 100); /* wait a moment, then force a restart */ 5157 (void) spa_scan(spa, POOL_SCAN_SCRUB); 5158} 5159 5160/* 5161 * Change the guid for the pool. 5162 */ 5163/* ARGSUSED */ 5164void 5165ztest_reguid(ztest_ds_t *zd, uint64_t id) 5166{ 5167 spa_t *spa = ztest_spa; 5168 uint64_t orig, load; 5169 int error; 5170 5171 orig = spa_guid(spa); 5172 load = spa_load_guid(spa); 5173 5174 (void) rw_wrlock(&ztest_name_lock); 5175 error = spa_change_guid(spa); 5176 (void) rw_unlock(&ztest_name_lock); 5177 5178 if (error != 0) 5179 return; 5180 5181 if (ztest_opts.zo_verbose >= 4) { 5182 (void) printf("Changed guid old %llu -> %llu\n", 5183 (u_longlong_t)orig, (u_longlong_t)spa_guid(spa)); 5184 } 5185 5186 VERIFY3U(orig, !=, spa_guid(spa)); 5187 VERIFY3U(load, ==, spa_load_guid(spa)); 5188} 5189 5190/* 5191 * Rename the pool to a different name and then rename it back. 5192 */ 5193/* ARGSUSED */ 5194void 5195ztest_spa_rename(ztest_ds_t *zd, uint64_t id) 5196{ 5197 char *oldname, *newname; 5198 spa_t *spa; 5199 5200 (void) rw_wrlock(&ztest_name_lock); 5201 5202 oldname = ztest_opts.zo_pool; 5203 newname = umem_alloc(strlen(oldname) + 5, UMEM_NOFAIL); 5204 (void) strcpy(newname, oldname); 5205 (void) strcat(newname, "_tmp"); 5206 5207 /* 5208 * Do the rename 5209 */ 5210 VERIFY3U(0, ==, spa_rename(oldname, newname)); 5211 5212 /* 5213 * Try to open it under the old name, which shouldn't exist 5214 */ 5215 VERIFY3U(ENOENT, ==, spa_open(oldname, &spa, FTAG)); 5216 5217 /* 5218 * Open it under the new name and make sure it's still the same spa_t. 5219 */ 5220 VERIFY3U(0, ==, spa_open(newname, &spa, FTAG)); 5221 5222 ASSERT(spa == ztest_spa); 5223 spa_close(spa, FTAG); 5224 5225 /* 5226 * Rename it back to the original 5227 */ 5228 VERIFY3U(0, ==, spa_rename(newname, oldname)); 5229 5230 /* 5231 * Make sure it can still be opened 5232 */ 5233 VERIFY3U(0, ==, spa_open(oldname, &spa, FTAG)); 5234 5235 ASSERT(spa == ztest_spa); 5236 spa_close(spa, FTAG); 5237 5238 umem_free(newname, strlen(newname) + 1); 5239 5240 (void) rw_unlock(&ztest_name_lock); 5241} 5242 5243/* 5244 * Verify pool integrity by running zdb. 5245 */ 5246static void 5247ztest_run_zdb(char *pool) 5248{ 5249 int status; 5250 char zdb[MAXPATHLEN + MAXNAMELEN + 20]; 5251 char zbuf[1024]; 5252 char *bin; 5253 char *ztest; 5254 char *isa; 5255 int isalen; 5256 FILE *fp; 5257 5258 strlcpy(zdb, "/usr/bin/ztest", sizeof(zdb)); 5259 5260 /* zdb lives in /usr/sbin, while ztest lives in /usr/bin */ 5261 bin = strstr(zdb, "/usr/bin/"); 5262 ztest = strstr(bin, "/ztest"); 5263 isa = bin + 8; 5264 isalen = ztest - isa; 5265 isa = strdup(isa); 5266 /* LINTED */ 5267 (void) sprintf(bin, 5268 "/usr/sbin%.*s/zdb -bcc%s%s -d -U %s %s", 5269 isalen, 5270 isa, 5271 ztest_opts.zo_verbose >= 3 ? "s" : "", 5272 ztest_opts.zo_verbose >= 4 ? "v" : "", 5273 spa_config_path, 5274 pool); 5275 free(isa); 5276 5277 if (ztest_opts.zo_verbose >= 5) 5278 (void) printf("Executing %s\n", strstr(zdb, "zdb ")); 5279 5280 fp = popen(zdb, "r"); 5281 assert(fp != NULL); 5282 5283 while (fgets(zbuf, sizeof (zbuf), fp) != NULL) 5284 if (ztest_opts.zo_verbose >= 3) 5285 (void) printf("%s", zbuf); 5286 5287 status = pclose(fp); 5288 5289 if (status == 0) 5290 return; 5291 5292 ztest_dump_core = 0; 5293 if (WIFEXITED(status)) 5294 fatal(0, "'%s' exit code %d", zdb, WEXITSTATUS(status)); 5295 else 5296 fatal(0, "'%s' died with signal %d", zdb, WTERMSIG(status)); 5297} 5298 5299static void 5300ztest_walk_pool_directory(char *header) 5301{ 5302 spa_t *spa = NULL; 5303 5304 if (ztest_opts.zo_verbose >= 6) 5305 (void) printf("%s\n", header); 5306 5307 mutex_enter(&spa_namespace_lock); 5308 while ((spa = spa_next(spa)) != NULL) 5309 if (ztest_opts.zo_verbose >= 6) 5310 (void) printf("\t%s\n", spa_name(spa)); 5311 mutex_exit(&spa_namespace_lock); 5312} 5313 5314static void 5315ztest_spa_import_export(char *oldname, char *newname) 5316{ 5317 nvlist_t *config, *newconfig; 5318 uint64_t pool_guid; 5319 spa_t *spa; 5320 int error; 5321 5322 if (ztest_opts.zo_verbose >= 4) { 5323 (void) printf("import/export: old = %s, new = %s\n", 5324 oldname, newname); 5325 } 5326 5327 /* 5328 * Clean up from previous runs. 5329 */ 5330 (void) spa_destroy(newname); 5331 5332 /* 5333 * Get the pool's configuration and guid. 5334 */ 5335 VERIFY3U(0, ==, spa_open(oldname, &spa, FTAG)); 5336 5337 /* 5338 * Kick off a scrub to tickle scrub/export races. 5339 */ 5340 if (ztest_random(2) == 0) 5341 (void) spa_scan(spa, POOL_SCAN_SCRUB); 5342 5343 pool_guid = spa_guid(spa); 5344 spa_close(spa, FTAG); 5345 5346 ztest_walk_pool_directory("pools before export"); 5347 5348 /* 5349 * Export it. 5350 */ 5351 VERIFY3U(0, ==, spa_export(oldname, &config, B_FALSE, B_FALSE)); 5352 5353 ztest_walk_pool_directory("pools after export"); 5354 5355 /* 5356 * Try to import it. 5357 */ 5358 newconfig = spa_tryimport(config); 5359 ASSERT(newconfig != NULL); 5360 nvlist_free(newconfig); 5361 5362 /* 5363 * Import it under the new name. 5364 */ 5365 error = spa_import(newname, config, NULL, 0); 5366 if (error != 0) { 5367 dump_nvlist(config, 0); 5368 fatal(B_FALSE, "couldn't import pool %s as %s: error %u", 5369 oldname, newname, error); 5370 } 5371 5372 ztest_walk_pool_directory("pools after import"); 5373 5374 /* 5375 * Try to import it again -- should fail with EEXIST. 5376 */ 5377 VERIFY3U(EEXIST, ==, spa_import(newname, config, NULL, 0)); 5378 5379 /* 5380 * Try to import it under a different name -- should fail with EEXIST. 5381 */ 5382 VERIFY3U(EEXIST, ==, spa_import(oldname, config, NULL, 0)); 5383 5384 /* 5385 * Verify that the pool is no longer visible under the old name. 5386 */ 5387 VERIFY3U(ENOENT, ==, spa_open(oldname, &spa, FTAG)); 5388 5389 /* 5390 * Verify that we can open and close the pool using the new name. 5391 */ 5392 VERIFY3U(0, ==, spa_open(newname, &spa, FTAG)); 5393 ASSERT(pool_guid == spa_guid(spa)); 5394 spa_close(spa, FTAG); 5395 5396 nvlist_free(config); 5397} 5398 5399static void 5400ztest_resume(spa_t *spa) 5401{ 5402 if (spa_suspended(spa) && ztest_opts.zo_verbose >= 6) 5403 (void) printf("resuming from suspended state\n"); 5404 spa_vdev_state_enter(spa, SCL_NONE); 5405 vdev_clear(spa, NULL); 5406 (void) spa_vdev_state_exit(spa, NULL, 0); 5407 (void) zio_resume(spa); 5408} 5409 5410static void * 5411ztest_resume_thread(void *arg) 5412{ 5413 spa_t *spa = arg; 5414 5415 while (!ztest_exiting) { 5416 if (spa_suspended(spa)) 5417 ztest_resume(spa); 5418 (void) poll(NULL, 0, 100); 5419 5420 /* 5421 * Periodically change the zfs_compressed_arc_enabled setting. 5422 */ 5423 if (ztest_random(10) == 0) 5424 zfs_compressed_arc_enabled = ztest_random(2); 5425 } 5426 return (NULL); 5427} 5428 5429static void * 5430ztest_deadman_thread(void *arg) 5431{ 5432 ztest_shared_t *zs = arg; 5433 spa_t *spa = ztest_spa; 5434 hrtime_t delta, total = 0; 5435 5436 for (;;) { 5437 delta = zs->zs_thread_stop - zs->zs_thread_start + 5438 MSEC2NSEC(zfs_deadman_synctime_ms); 5439 5440 (void) poll(NULL, 0, (int)NSEC2MSEC(delta)); 5441 5442 /* 5443 * If the pool is suspended then fail immediately. Otherwise, 5444 * check to see if the pool is making any progress. If 5445 * vdev_deadman() discovers that there hasn't been any recent 5446 * I/Os then it will end up aborting the tests. 5447 */ 5448 if (spa_suspended(spa) || spa->spa_root_vdev == NULL) { 5449 fatal(0, "aborting test after %llu seconds because " 5450 "pool has transitioned to a suspended state.", 5451 zfs_deadman_synctime_ms / 1000); 5452 return (NULL); 5453 } 5454 vdev_deadman(spa->spa_root_vdev); 5455 5456 total += zfs_deadman_synctime_ms/1000; 5457 (void) printf("ztest has been running for %lld seconds\n", 5458 total); 5459 } 5460} 5461 5462static void 5463ztest_execute(int test, ztest_info_t *zi, uint64_t id) 5464{ 5465 ztest_ds_t *zd = &ztest_ds[id % ztest_opts.zo_datasets]; 5466 ztest_shared_callstate_t *zc = ZTEST_GET_SHARED_CALLSTATE(test); 5467 hrtime_t functime = gethrtime(); 5468 5469 for (int i = 0; i < zi->zi_iters; i++) 5470 zi->zi_func(zd, id); 5471 5472 functime = gethrtime() - functime; 5473 5474 atomic_add_64(&zc->zc_count, 1); 5475 atomic_add_64(&zc->zc_time, functime); 5476 5477 if (ztest_opts.zo_verbose >= 4) { 5478 Dl_info dli; 5479 (void) dladdr((void *)zi->zi_func, &dli); 5480 (void) printf("%6.2f sec in %s\n", 5481 (double)functime / NANOSEC, dli.dli_sname); 5482 } 5483} 5484 5485static void * 5486ztest_thread(void *arg) 5487{ 5488 int rand; 5489 uint64_t id = (uintptr_t)arg; 5490 ztest_shared_t *zs = ztest_shared; 5491 uint64_t call_next; 5492 hrtime_t now; 5493 ztest_info_t *zi; 5494 ztest_shared_callstate_t *zc; 5495 5496 while ((now = gethrtime()) < zs->zs_thread_stop) { 5497 /* 5498 * See if it's time to force a crash. 5499 */ 5500 if (now > zs->zs_thread_kill) 5501 ztest_kill(zs); 5502 5503 /* 5504 * If we're getting ENOSPC with some regularity, stop. 5505 */ 5506 if (zs->zs_enospc_count > 10) 5507 break; 5508 5509 /* 5510 * Pick a random function to execute. 5511 */ 5512 rand = ztest_random(ZTEST_FUNCS); 5513 zi = &ztest_info[rand]; 5514 zc = ZTEST_GET_SHARED_CALLSTATE(rand); 5515 call_next = zc->zc_next; 5516 5517 if (now >= call_next && 5518 atomic_cas_64(&zc->zc_next, call_next, call_next + 5519 ztest_random(2 * zi->zi_interval[0] + 1)) == call_next) { 5520 ztest_execute(rand, zi, id); 5521 } 5522 } 5523 5524 return (NULL); 5525} 5526 5527static void 5528ztest_dataset_name(char *dsname, char *pool, int d) 5529{ 5530 (void) snprintf(dsname, ZFS_MAX_DATASET_NAME_LEN, "%s/ds_%d", pool, d); 5531} 5532 5533static void 5534ztest_dataset_destroy(int d) 5535{ 5536 char name[ZFS_MAX_DATASET_NAME_LEN]; 5537 5538 ztest_dataset_name(name, ztest_opts.zo_pool, d); 5539 5540 if (ztest_opts.zo_verbose >= 3) 5541 (void) printf("Destroying %s to free up space\n", name); 5542 5543 /* 5544 * Cleanup any non-standard clones and snapshots. In general, 5545 * ztest thread t operates on dataset (t % zopt_datasets), 5546 * so there may be more than one thing to clean up. 5547 */ 5548 for (int t = d; t < ztest_opts.zo_threads; 5549 t += ztest_opts.zo_datasets) { 5550 ztest_dsl_dataset_cleanup(name, t); 5551 } 5552 5553 (void) dmu_objset_find(name, ztest_objset_destroy_cb, NULL, 5554 DS_FIND_SNAPSHOTS | DS_FIND_CHILDREN); 5555} 5556 5557static void 5558ztest_dataset_dirobj_verify(ztest_ds_t *zd) 5559{ 5560 uint64_t usedobjs, dirobjs, scratch; 5561 5562 /* 5563 * ZTEST_DIROBJ is the object directory for the entire dataset. 5564 * Therefore, the number of objects in use should equal the 5565 * number of ZTEST_DIROBJ entries, +1 for ZTEST_DIROBJ itself. 5566 * If not, we have an object leak. 5567 * 5568 * Note that we can only check this in ztest_dataset_open(), 5569 * when the open-context and syncing-context values agree. 5570 * That's because zap_count() returns the open-context value, 5571 * while dmu_objset_space() returns the rootbp fill count. 5572 */ 5573 VERIFY3U(0, ==, zap_count(zd->zd_os, ZTEST_DIROBJ, &dirobjs)); 5574 dmu_objset_space(zd->zd_os, &scratch, &scratch, &usedobjs, &scratch); 5575 ASSERT3U(dirobjs + 1, ==, usedobjs); 5576} 5577 5578static int 5579ztest_dataset_open(int d) 5580{ 5581 ztest_ds_t *zd = &ztest_ds[d]; 5582 uint64_t committed_seq = ZTEST_GET_SHARED_DS(d)->zd_seq; 5583 objset_t *os; 5584 zilog_t *zilog; 5585 char name[ZFS_MAX_DATASET_NAME_LEN]; 5586 int error; 5587 5588 ztest_dataset_name(name, ztest_opts.zo_pool, d); 5589 5590 (void) rw_rdlock(&ztest_name_lock); 5591 5592 error = ztest_dataset_create(name); 5593 if (error == ENOSPC) { 5594 (void) rw_unlock(&ztest_name_lock); 5595 ztest_record_enospc(FTAG); 5596 return (error); 5597 } 5598 ASSERT(error == 0 || error == EEXIST); 5599 5600 VERIFY0(dmu_objset_own(name, DMU_OST_OTHER, B_FALSE, zd, &os)); 5601 (void) rw_unlock(&ztest_name_lock); 5602 5603 ztest_zd_init(zd, ZTEST_GET_SHARED_DS(d), os); 5604 5605 zilog = zd->zd_zilog; 5606 5607 if (zilog->zl_header->zh_claim_lr_seq != 0 && 5608 zilog->zl_header->zh_claim_lr_seq < committed_seq) 5609 fatal(0, "missing log records: claimed %llu < committed %llu", 5610 zilog->zl_header->zh_claim_lr_seq, committed_seq); 5611 5612 ztest_dataset_dirobj_verify(zd); 5613 5614 zil_replay(os, zd, ztest_replay_vector); 5615 5616 ztest_dataset_dirobj_verify(zd); 5617 5618 if (ztest_opts.zo_verbose >= 6) 5619 (void) printf("%s replay %llu blocks, %llu records, seq %llu\n", 5620 zd->zd_name, 5621 (u_longlong_t)zilog->zl_parse_blk_count, 5622 (u_longlong_t)zilog->zl_parse_lr_count, 5623 (u_longlong_t)zilog->zl_replaying_seq); 5624 5625 zilog = zil_open(os, ztest_get_data); 5626 5627 if (zilog->zl_replaying_seq != 0 && 5628 zilog->zl_replaying_seq < committed_seq) 5629 fatal(0, "missing log records: replayed %llu < committed %llu", 5630 zilog->zl_replaying_seq, committed_seq); 5631 5632 return (0); 5633} 5634 5635static void 5636ztest_dataset_close(int d) 5637{ 5638 ztest_ds_t *zd = &ztest_ds[d]; 5639 5640 zil_close(zd->zd_zilog); 5641 dmu_objset_disown(zd->zd_os, zd); 5642 5643 ztest_zd_fini(zd); 5644} 5645 5646/* 5647 * Kick off threads to run tests on all datasets in parallel. 5648 */ 5649static void 5650ztest_run(ztest_shared_t *zs) 5651{ 5652 thread_t *tid; 5653 spa_t *spa; 5654 objset_t *os; 5655 thread_t resume_tid; 5656 int error; 5657 5658 ztest_exiting = B_FALSE; 5659 5660 /* 5661 * Initialize parent/child shared state. 5662 */ 5663 VERIFY(_mutex_init(&ztest_vdev_lock, USYNC_THREAD, NULL) == 0); 5664 VERIFY(rwlock_init(&ztest_name_lock, USYNC_THREAD, NULL) == 0); 5665 5666 zs->zs_thread_start = gethrtime(); 5667 zs->zs_thread_stop = 5668 zs->zs_thread_start + ztest_opts.zo_passtime * NANOSEC; 5669 zs->zs_thread_stop = MIN(zs->zs_thread_stop, zs->zs_proc_stop); 5670 zs->zs_thread_kill = zs->zs_thread_stop; 5671 if (ztest_random(100) < ztest_opts.zo_killrate) { 5672 zs->zs_thread_kill -= 5673 ztest_random(ztest_opts.zo_passtime * NANOSEC); 5674 } 5675 5676 (void) _mutex_init(&zcl.zcl_callbacks_lock, USYNC_THREAD, NULL); 5677 5678 list_create(&zcl.zcl_callbacks, sizeof (ztest_cb_data_t), 5679 offsetof(ztest_cb_data_t, zcd_node)); 5680 5681 /* 5682 * Open our pool. 5683 */ 5684 kernel_init(FREAD | FWRITE); 5685 VERIFY0(spa_open(ztest_opts.zo_pool, &spa, FTAG)); 5686 spa->spa_debug = B_TRUE; 5687 metaslab_preload_limit = ztest_random(20) + 1; 5688 ztest_spa = spa; 5689 5690 dmu_objset_stats_t dds; 5691 VERIFY0(dmu_objset_own(ztest_opts.zo_pool, 5692 DMU_OST_ANY, B_TRUE, FTAG, &os)); 5693 dsl_pool_config_enter(dmu_objset_pool(os), FTAG); 5694 dmu_objset_fast_stat(os, &dds); 5695 dsl_pool_config_exit(dmu_objset_pool(os), FTAG); 5696 zs->zs_guid = dds.dds_guid; 5697 dmu_objset_disown(os, FTAG); 5698 5699 spa->spa_dedup_ditto = 2 * ZIO_DEDUPDITTO_MIN; 5700 5701 /* 5702 * We don't expect the pool to suspend unless maxfaults == 0, 5703 * in which case ztest_fault_inject() temporarily takes away 5704 * the only valid replica. 5705 */ 5706 if (MAXFAULTS() == 0) 5707 spa->spa_failmode = ZIO_FAILURE_MODE_WAIT; 5708 else 5709 spa->spa_failmode = ZIO_FAILURE_MODE_PANIC; 5710 5711 /* 5712 * Create a thread to periodically resume suspended I/O. 5713 */ 5714 VERIFY(thr_create(0, 0, ztest_resume_thread, spa, THR_BOUND, 5715 &resume_tid) == 0); 5716 5717 /* 5718 * Create a deadman thread to abort() if we hang. 5719 */ 5720 VERIFY(thr_create(0, 0, ztest_deadman_thread, zs, THR_BOUND, 5721 NULL) == 0); 5722 5723 /* 5724 * Verify that we can safely inquire about about any object, 5725 * whether it's allocated or not. To make it interesting, 5726 * we probe a 5-wide window around each power of two. 5727 * This hits all edge cases, including zero and the max. 5728 */ 5729 for (int t = 0; t < 64; t++) { 5730 for (int d = -5; d <= 5; d++) { 5731 error = dmu_object_info(spa->spa_meta_objset, 5732 (1ULL << t) + d, NULL); 5733 ASSERT(error == 0 || error == ENOENT || 5734 error == EINVAL); 5735 } 5736 } 5737 5738 /* 5739 * If we got any ENOSPC errors on the previous run, destroy something. 5740 */ 5741 if (zs->zs_enospc_count != 0) { 5742 int d = ztest_random(ztest_opts.zo_datasets); 5743 ztest_dataset_destroy(d); 5744 } 5745 zs->zs_enospc_count = 0; 5746 5747 tid = umem_zalloc(ztest_opts.zo_threads * sizeof (thread_t), 5748 UMEM_NOFAIL); 5749 5750 if (ztest_opts.zo_verbose >= 4) 5751 (void) printf("starting main threads...\n"); 5752 5753 /* 5754 * Kick off all the tests that run in parallel. 5755 */ 5756 for (int t = 0; t < ztest_opts.zo_threads; t++) { 5757 if (t < ztest_opts.zo_datasets && 5758 ztest_dataset_open(t) != 0) 5759 return; 5760 VERIFY(thr_create(0, 0, ztest_thread, (void *)(uintptr_t)t, 5761 THR_BOUND, &tid[t]) == 0); 5762 } 5763 5764 /* 5765 * Wait for all of the tests to complete. We go in reverse order 5766 * so we don't close datasets while threads are still using them. 5767 */ 5768 for (int t = ztest_opts.zo_threads - 1; t >= 0; t--) { 5769 VERIFY(thr_join(tid[t], NULL, NULL) == 0); 5770 if (t < ztest_opts.zo_datasets) 5771 ztest_dataset_close(t); 5772 } 5773 5774 txg_wait_synced(spa_get_dsl(spa), 0); 5775 5776 zs->zs_alloc = metaslab_class_get_alloc(spa_normal_class(spa)); 5777 zs->zs_space = metaslab_class_get_space(spa_normal_class(spa)); 5778 zfs_dbgmsg_print(FTAG); 5779 5780 umem_free(tid, ztest_opts.zo_threads * sizeof (thread_t)); 5781 5782 /* Kill the resume thread */ 5783 ztest_exiting = B_TRUE; 5784 VERIFY(thr_join(resume_tid, NULL, NULL) == 0); 5785 ztest_resume(spa); 5786 5787 /* 5788 * Right before closing the pool, kick off a bunch of async I/O; 5789 * spa_close() should wait for it to complete. 5790 */ 5791 for (uint64_t object = 1; object < 50; object++) { 5792 dmu_prefetch(spa->spa_meta_objset, object, 0, 0, 1ULL << 20, 5793 ZIO_PRIORITY_SYNC_READ); 5794 } 5795 5796 spa_close(spa, FTAG); 5797 5798 /* 5799 * Verify that we can loop over all pools. 5800 */ 5801 mutex_enter(&spa_namespace_lock); 5802 for (spa = spa_next(NULL); spa != NULL; spa = spa_next(spa)) 5803 if (ztest_opts.zo_verbose > 3) 5804 (void) printf("spa_next: found %s\n", spa_name(spa)); 5805 mutex_exit(&spa_namespace_lock); 5806 5807 /* 5808 * Verify that we can export the pool and reimport it under a 5809 * different name. 5810 */ 5811 if (ztest_random(2) == 0) { 5812 char name[ZFS_MAX_DATASET_NAME_LEN]; 5813 (void) snprintf(name, sizeof (name), "%s_import", 5814 ztest_opts.zo_pool); 5815 ztest_spa_import_export(ztest_opts.zo_pool, name); 5816 ztest_spa_import_export(name, ztest_opts.zo_pool); 5817 } 5818 5819 kernel_fini(); 5820 5821 list_destroy(&zcl.zcl_callbacks); 5822 5823 (void) _mutex_destroy(&zcl.zcl_callbacks_lock); 5824 5825 (void) rwlock_destroy(&ztest_name_lock); 5826 (void) _mutex_destroy(&ztest_vdev_lock); 5827} 5828 5829static void 5830ztest_freeze(void) 5831{ 5832 ztest_ds_t *zd = &ztest_ds[0]; 5833 spa_t *spa; 5834 int numloops = 0; 5835 5836 if (ztest_opts.zo_verbose >= 3) 5837 (void) printf("testing spa_freeze()...\n"); 5838 5839 kernel_init(FREAD | FWRITE); 5840 VERIFY3U(0, ==, spa_open(ztest_opts.zo_pool, &spa, FTAG)); 5841 VERIFY3U(0, ==, ztest_dataset_open(0)); 5842 spa->spa_debug = B_TRUE; 5843 ztest_spa = spa; 5844 5845 /* 5846 * Force the first log block to be transactionally allocated. 5847 * We have to do this before we freeze the pool -- otherwise 5848 * the log chain won't be anchored. 5849 */ 5850 while (BP_IS_HOLE(&zd->zd_zilog->zl_header->zh_log)) { 5851 ztest_dmu_object_alloc_free(zd, 0); 5852 zil_commit(zd->zd_zilog, 0); 5853 } 5854 5855 txg_wait_synced(spa_get_dsl(spa), 0); 5856 5857 /* 5858 * Freeze the pool. This stops spa_sync() from doing anything, 5859 * so that the only way to record changes from now on is the ZIL. 5860 */ 5861 spa_freeze(spa); 5862 5863 /* 5864 * Because it is hard to predict how much space a write will actually 5865 * require beforehand, we leave ourselves some fudge space to write over 5866 * capacity. 5867 */ 5868 uint64_t capacity = metaslab_class_get_space(spa_normal_class(spa)) / 2; 5869 5870 /* 5871 * Run tests that generate log records but don't alter the pool config 5872 * or depend on DSL sync tasks (snapshots, objset create/destroy, etc). 5873 * We do a txg_wait_synced() after each iteration to force the txg 5874 * to increase well beyond the last synced value in the uberblock. 5875 * The ZIL should be OK with that. 5876 * 5877 * Run a random number of times less than zo_maxloops and ensure we do 5878 * not run out of space on the pool. 5879 */ 5880 while (ztest_random(10) != 0 && 5881 numloops++ < ztest_opts.zo_maxloops && 5882 metaslab_class_get_alloc(spa_normal_class(spa)) < capacity) { 5883 ztest_od_t od; 5884 ztest_od_init(&od, 0, FTAG, 0, DMU_OT_UINT64_OTHER, 0, 0); 5885 VERIFY0(ztest_object_init(zd, &od, sizeof (od), B_FALSE)); 5886 ztest_io(zd, od.od_object, 5887 ztest_random(ZTEST_RANGE_LOCKS) << SPA_MAXBLOCKSHIFT); 5888 txg_wait_synced(spa_get_dsl(spa), 0); 5889 } 5890 5891 /* 5892 * Commit all of the changes we just generated. 5893 */ 5894 zil_commit(zd->zd_zilog, 0); 5895 txg_wait_synced(spa_get_dsl(spa), 0); 5896 5897 /* 5898 * Close our dataset and close the pool. 5899 */ 5900 ztest_dataset_close(0); 5901 spa_close(spa, FTAG); 5902 kernel_fini(); 5903 5904 /* 5905 * Open and close the pool and dataset to induce log replay. 5906 */ 5907 kernel_init(FREAD | FWRITE); 5908 VERIFY3U(0, ==, spa_open(ztest_opts.zo_pool, &spa, FTAG)); 5909 ASSERT(spa_freeze_txg(spa) == UINT64_MAX); 5910 VERIFY3U(0, ==, ztest_dataset_open(0)); 5911 ztest_dataset_close(0); 5912 5913 spa->spa_debug = B_TRUE; 5914 ztest_spa = spa; 5915 txg_wait_synced(spa_get_dsl(spa), 0); 5916 ztest_reguid(NULL, 0); 5917 5918 spa_close(spa, FTAG); 5919 kernel_fini(); 5920} 5921 5922void 5923print_time(hrtime_t t, char *timebuf) 5924{ 5925 hrtime_t s = t / NANOSEC; 5926 hrtime_t m = s / 60; 5927 hrtime_t h = m / 60; 5928 hrtime_t d = h / 24; 5929 5930 s -= m * 60; 5931 m -= h * 60; 5932 h -= d * 24; 5933 5934 timebuf[0] = '\0'; 5935 5936 if (d) 5937 (void) sprintf(timebuf, 5938 "%llud%02lluh%02llum%02llus", d, h, m, s); 5939 else if (h) 5940 (void) sprintf(timebuf, "%lluh%02llum%02llus", h, m, s); 5941 else if (m) 5942 (void) sprintf(timebuf, "%llum%02llus", m, s); 5943 else 5944 (void) sprintf(timebuf, "%llus", s); 5945} 5946 5947static nvlist_t * 5948make_random_props() 5949{ 5950 nvlist_t *props; 5951 5952 VERIFY(nvlist_alloc(&props, NV_UNIQUE_NAME, 0) == 0); 5953 if (ztest_random(2) == 0) 5954 return (props); 5955 VERIFY(nvlist_add_uint64(props, "autoreplace", 1) == 0); 5956 5957 return (props); 5958} 5959 5960/* 5961 * Create a storage pool with the given name and initial vdev size. 5962 * Then test spa_freeze() functionality. 5963 */ 5964static void 5965ztest_init(ztest_shared_t *zs) 5966{ 5967 spa_t *spa; 5968 nvlist_t *nvroot, *props; 5969 5970 VERIFY(_mutex_init(&ztest_vdev_lock, USYNC_THREAD, NULL) == 0); 5971 VERIFY(rwlock_init(&ztest_name_lock, USYNC_THREAD, NULL) == 0); 5972 5973 kernel_init(FREAD | FWRITE); 5974 5975 /* 5976 * Create the storage pool. 5977 */ 5978 (void) spa_destroy(ztest_opts.zo_pool); 5979 ztest_shared->zs_vdev_next_leaf = 0; 5980 zs->zs_splits = 0; 5981 zs->zs_mirrors = ztest_opts.zo_mirrors; 5982 nvroot = make_vdev_root(NULL, NULL, NULL, ztest_opts.zo_vdev_size, 0, 5983 0, ztest_opts.zo_raidz, zs->zs_mirrors, 1); 5984 props = make_random_props(); 5985 for (int i = 0; i < SPA_FEATURES; i++) { 5986 char buf[1024]; 5987 (void) snprintf(buf, sizeof (buf), "feature@%s", 5988 spa_feature_table[i].fi_uname); 5989 VERIFY3U(0, ==, nvlist_add_uint64(props, buf, 0)); 5990 } 5991 VERIFY3U(0, ==, spa_create(ztest_opts.zo_pool, nvroot, props, NULL)); 5992 nvlist_free(nvroot); 5993 nvlist_free(props); 5994 5995 VERIFY3U(0, ==, spa_open(ztest_opts.zo_pool, &spa, FTAG)); 5996 zs->zs_metaslab_sz = 5997 1ULL << spa->spa_root_vdev->vdev_child[0]->vdev_ms_shift; 5998 5999 spa_close(spa, FTAG); 6000 6001 kernel_fini(); 6002 6003 ztest_run_zdb(ztest_opts.zo_pool); 6004 6005 ztest_freeze(); 6006 6007 ztest_run_zdb(ztest_opts.zo_pool); 6008 6009 (void) rwlock_destroy(&ztest_name_lock); 6010 (void) _mutex_destroy(&ztest_vdev_lock); 6011} 6012 6013static void 6014setup_data_fd(void) 6015{ 6016 static char ztest_name_data[] = "/tmp/ztest.data.XXXXXX"; 6017 6018 ztest_fd_data = mkstemp(ztest_name_data); 6019 ASSERT3S(ztest_fd_data, >=, 0); 6020 (void) unlink(ztest_name_data); 6021} 6022 6023 6024static int 6025shared_data_size(ztest_shared_hdr_t *hdr) 6026{ 6027 int size; 6028 6029 size = hdr->zh_hdr_size; 6030 size += hdr->zh_opts_size; 6031 size += hdr->zh_size; 6032 size += hdr->zh_stats_size * hdr->zh_stats_count; 6033 size += hdr->zh_ds_size * hdr->zh_ds_count; 6034 6035 return (size); 6036} 6037 6038static void 6039setup_hdr(void) 6040{ 6041 int size; 6042 ztest_shared_hdr_t *hdr; 6043 6044 hdr = (void *)mmap(0, P2ROUNDUP(sizeof (*hdr), getpagesize()), 6045 PROT_READ | PROT_WRITE, MAP_SHARED, ztest_fd_data, 0); 6046 ASSERT(hdr != MAP_FAILED); 6047 6048 VERIFY3U(0, ==, ftruncate(ztest_fd_data, sizeof (ztest_shared_hdr_t))); 6049 6050 hdr->zh_hdr_size = sizeof (ztest_shared_hdr_t); 6051 hdr->zh_opts_size = sizeof (ztest_shared_opts_t); 6052 hdr->zh_size = sizeof (ztest_shared_t); 6053 hdr->zh_stats_size = sizeof (ztest_shared_callstate_t); 6054 hdr->zh_stats_count = ZTEST_FUNCS; 6055 hdr->zh_ds_size = sizeof (ztest_shared_ds_t); 6056 hdr->zh_ds_count = ztest_opts.zo_datasets; 6057 6058 size = shared_data_size(hdr); 6059 VERIFY3U(0, ==, ftruncate(ztest_fd_data, size)); 6060 6061 (void) munmap((caddr_t)hdr, P2ROUNDUP(sizeof (*hdr), getpagesize())); 6062} 6063 6064static void 6065setup_data(void) 6066{ 6067 int size, offset; 6068 ztest_shared_hdr_t *hdr; 6069 uint8_t *buf; 6070 6071 hdr = (void *)mmap(0, P2ROUNDUP(sizeof (*hdr), getpagesize()), 6072 PROT_READ, MAP_SHARED, ztest_fd_data, 0); 6073 ASSERT(hdr != MAP_FAILED); 6074 6075 size = shared_data_size(hdr); 6076 6077 (void) munmap((caddr_t)hdr, P2ROUNDUP(sizeof (*hdr), getpagesize())); 6078 hdr = ztest_shared_hdr = (void *)mmap(0, P2ROUNDUP(size, getpagesize()), 6079 PROT_READ | PROT_WRITE, MAP_SHARED, ztest_fd_data, 0); 6080 ASSERT(hdr != MAP_FAILED); 6081 buf = (uint8_t *)hdr; 6082 6083 offset = hdr->zh_hdr_size; 6084 ztest_shared_opts = (void *)&buf[offset]; 6085 offset += hdr->zh_opts_size; 6086 ztest_shared = (void *)&buf[offset]; 6087 offset += hdr->zh_size; 6088 ztest_shared_callstate = (void *)&buf[offset]; 6089 offset += hdr->zh_stats_size * hdr->zh_stats_count; 6090 ztest_shared_ds = (void *)&buf[offset]; 6091} 6092 6093static boolean_t 6094exec_child(char *cmd, char *libpath, boolean_t ignorekill, int *statusp) 6095{ 6096 pid_t pid; 6097 int status; 6098 char *cmdbuf = NULL; 6099 6100 pid = fork(); 6101 6102 if (cmd == NULL) { 6103 cmdbuf = umem_alloc(MAXPATHLEN, UMEM_NOFAIL); 6104 (void) strlcpy(cmdbuf, getexecname(), MAXPATHLEN); 6105 cmd = cmdbuf; 6106 } 6107 6108 if (pid == -1) 6109 fatal(1, "fork failed"); 6110 6111 if (pid == 0) { /* child */ 6112 char *emptyargv[2] = { cmd, NULL }; 6113 char fd_data_str[12]; 6114 6115 struct rlimit rl = { 1024, 1024 }; 6116 (void) setrlimit(RLIMIT_NOFILE, &rl); 6117 6118 (void) close(ztest_fd_rand); 6119 VERIFY3U(11, >=, 6120 snprintf(fd_data_str, 12, "%d", ztest_fd_data)); 6121 VERIFY0(setenv("ZTEST_FD_DATA", fd_data_str, 1)); 6122 6123 (void) enable_extended_FILE_stdio(-1, -1); 6124 if (libpath != NULL) 6125 VERIFY(0 == setenv("LD_LIBRARY_PATH", libpath, 1)); 6126#ifdef illumos 6127 (void) execv(cmd, emptyargv); 6128#else 6129 (void) execvp(cmd, emptyargv); 6130#endif 6131 ztest_dump_core = B_FALSE; 6132 fatal(B_TRUE, "exec failed: %s", cmd); 6133 } 6134 6135 if (cmdbuf != NULL) { 6136 umem_free(cmdbuf, MAXPATHLEN); 6137 cmd = NULL; 6138 } 6139 6140 while (waitpid(pid, &status, 0) != pid) 6141 continue; 6142 if (statusp != NULL) 6143 *statusp = status; 6144 6145 if (WIFEXITED(status)) { 6146 if (WEXITSTATUS(status) != 0) { 6147 (void) fprintf(stderr, "child exited with code %d\n", 6148 WEXITSTATUS(status)); 6149 exit(2); 6150 } 6151 return (B_FALSE); 6152 } else if (WIFSIGNALED(status)) { 6153 if (!ignorekill || WTERMSIG(status) != SIGKILL) { 6154 (void) fprintf(stderr, "child died with signal %d\n", 6155 WTERMSIG(status)); 6156 exit(3); 6157 } 6158 return (B_TRUE); 6159 } else { 6160 (void) fprintf(stderr, "something strange happened to child\n"); 6161 exit(4); 6162 /* NOTREACHED */ 6163 } 6164} 6165 6166static void 6167ztest_run_init(void) 6168{ 6169 ztest_shared_t *zs = ztest_shared; 6170 6171 ASSERT(ztest_opts.zo_init != 0); 6172 6173 /* 6174 * Blow away any existing copy of zpool.cache 6175 */ 6176 (void) remove(spa_config_path); 6177 6178 /* 6179 * Create and initialize our storage pool. 6180 */ 6181 for (int i = 1; i <= ztest_opts.zo_init; i++) { 6182 bzero(zs, sizeof (ztest_shared_t)); 6183 if (ztest_opts.zo_verbose >= 3 && 6184 ztest_opts.zo_init != 1) { 6185 (void) printf("ztest_init(), pass %d\n", i); 6186 } 6187 ztest_init(zs); 6188 } 6189} 6190 6191int 6192main(int argc, char **argv) 6193{ 6194 int kills = 0; 6195 int iters = 0; 6196 int older = 0; 6197 int newer = 0; 6198 ztest_shared_t *zs; 6199 ztest_info_t *zi; 6200 ztest_shared_callstate_t *zc; 6201 char timebuf[100]; 6202 char numbuf[NN_NUMBUF_SZ]; 6203 spa_t *spa; 6204 char *cmd; 6205 boolean_t hasalt; 6206 char *fd_data_str = getenv("ZTEST_FD_DATA"); 6207 6208 (void) setvbuf(stdout, NULL, _IOLBF, 0); 6209 6210 dprintf_setup(&argc, argv); 6211 zfs_deadman_synctime_ms = 300000; 6212 6213 ztest_fd_rand = open("/dev/urandom", O_RDONLY); 6214 ASSERT3S(ztest_fd_rand, >=, 0); 6215 6216 if (!fd_data_str) { 6217 process_options(argc, argv); 6218 6219 setup_data_fd(); 6220 setup_hdr(); 6221 setup_data(); 6222 bcopy(&ztest_opts, ztest_shared_opts, 6223 sizeof (*ztest_shared_opts)); 6224 } else { 6225 ztest_fd_data = atoi(fd_data_str); 6226 setup_data(); 6227 bcopy(ztest_shared_opts, &ztest_opts, sizeof (ztest_opts)); 6228 } 6229 ASSERT3U(ztest_opts.zo_datasets, ==, ztest_shared_hdr->zh_ds_count); 6230 6231 /* Override location of zpool.cache */ 6232 VERIFY3U(asprintf((char **)&spa_config_path, "%s/zpool.cache", 6233 ztest_opts.zo_dir), !=, -1); 6234 6235 ztest_ds = umem_alloc(ztest_opts.zo_datasets * sizeof (ztest_ds_t), 6236 UMEM_NOFAIL); 6237 zs = ztest_shared; 6238 6239 if (fd_data_str) { 6240 metaslab_gang_bang = ztest_opts.zo_metaslab_gang_bang; 6241 metaslab_df_alloc_threshold = 6242 zs->zs_metaslab_df_alloc_threshold; 6243 6244 if (zs->zs_do_init) 6245 ztest_run_init(); 6246 else 6247 ztest_run(zs); 6248 exit(0); 6249 } 6250 6251 hasalt = (strlen(ztest_opts.zo_alt_ztest) != 0); 6252 6253 if (ztest_opts.zo_verbose >= 1) { 6254 (void) printf("%llu vdevs, %d datasets, %d threads," 6255 " %llu seconds...\n", 6256 (u_longlong_t)ztest_opts.zo_vdevs, 6257 ztest_opts.zo_datasets, 6258 ztest_opts.zo_threads, 6259 (u_longlong_t)ztest_opts.zo_time); 6260 } 6261 6262 cmd = umem_alloc(MAXNAMELEN, UMEM_NOFAIL); 6263 (void) strlcpy(cmd, getexecname(), MAXNAMELEN); 6264 6265 zs->zs_do_init = B_TRUE; 6266 if (strlen(ztest_opts.zo_alt_ztest) != 0) { 6267 if (ztest_opts.zo_verbose >= 1) { 6268 (void) printf("Executing older ztest for " 6269 "initialization: %s\n", ztest_opts.zo_alt_ztest); 6270 } 6271 VERIFY(!exec_child(ztest_opts.zo_alt_ztest, 6272 ztest_opts.zo_alt_libpath, B_FALSE, NULL)); 6273 } else { 6274 VERIFY(!exec_child(NULL, NULL, B_FALSE, NULL)); 6275 } 6276 zs->zs_do_init = B_FALSE; 6277 6278 zs->zs_proc_start = gethrtime(); 6279 zs->zs_proc_stop = zs->zs_proc_start + ztest_opts.zo_time * NANOSEC; 6280 6281 for (int f = 0; f < ZTEST_FUNCS; f++) { 6282 zi = &ztest_info[f]; 6283 zc = ZTEST_GET_SHARED_CALLSTATE(f); 6284 if (zs->zs_proc_start + zi->zi_interval[0] > zs->zs_proc_stop) 6285 zc->zc_next = UINT64_MAX; 6286 else 6287 zc->zc_next = zs->zs_proc_start + 6288 ztest_random(2 * zi->zi_interval[0] + 1); 6289 } 6290 6291 /* 6292 * Run the tests in a loop. These tests include fault injection 6293 * to verify that self-healing data works, and forced crashes 6294 * to verify that we never lose on-disk consistency. 6295 */ 6296 while (gethrtime() < zs->zs_proc_stop) { 6297 int status; 6298 boolean_t killed; 6299 6300 /* 6301 * Initialize the workload counters for each function. 6302 */ 6303 for (int f = 0; f < ZTEST_FUNCS; f++) { 6304 zc = ZTEST_GET_SHARED_CALLSTATE(f); 6305 zc->zc_count = 0; 6306 zc->zc_time = 0; 6307 } 6308 6309 /* Set the allocation switch size */ 6310 zs->zs_metaslab_df_alloc_threshold = 6311 ztest_random(zs->zs_metaslab_sz / 4) + 1; 6312 6313 if (!hasalt || ztest_random(2) == 0) { 6314 if (hasalt && ztest_opts.zo_verbose >= 1) { 6315 (void) printf("Executing newer ztest: %s\n", 6316 cmd); 6317 } 6318 newer++; 6319 killed = exec_child(cmd, NULL, B_TRUE, &status); 6320 } else { 6321 if (hasalt && ztest_opts.zo_verbose >= 1) { 6322 (void) printf("Executing older ztest: %s\n", 6323 ztest_opts.zo_alt_ztest); 6324 } 6325 older++; 6326 killed = exec_child(ztest_opts.zo_alt_ztest, 6327 ztest_opts.zo_alt_libpath, B_TRUE, &status); 6328 } 6329 6330 if (killed) 6331 kills++; 6332 iters++; 6333 6334 if (ztest_opts.zo_verbose >= 1) { 6335 hrtime_t now = gethrtime(); 6336 6337 now = MIN(now, zs->zs_proc_stop); 6338 print_time(zs->zs_proc_stop - now, timebuf); 6339 nicenum(zs->zs_space, numbuf, sizeof (numbuf)); 6340 6341 (void) printf("Pass %3d, %8s, %3llu ENOSPC, " 6342 "%4.1f%% of %5s used, %3.0f%% done, %8s to go\n", 6343 iters, 6344 WIFEXITED(status) ? "Complete" : "SIGKILL", 6345 (u_longlong_t)zs->zs_enospc_count, 6346 100.0 * zs->zs_alloc / zs->zs_space, 6347 numbuf, 6348 100.0 * (now - zs->zs_proc_start) / 6349 (ztest_opts.zo_time * NANOSEC), timebuf); 6350 } 6351 6352 if (ztest_opts.zo_verbose >= 2) { 6353 (void) printf("\nWorkload summary:\n\n"); 6354 (void) printf("%7s %9s %s\n", 6355 "Calls", "Time", "Function"); 6356 (void) printf("%7s %9s %s\n", 6357 "-----", "----", "--------"); 6358 for (int f = 0; f < ZTEST_FUNCS; f++) { 6359 Dl_info dli; 6360 6361 zi = &ztest_info[f]; 6362 zc = ZTEST_GET_SHARED_CALLSTATE(f); 6363 print_time(zc->zc_time, timebuf); 6364 (void) dladdr((void *)zi->zi_func, &dli); 6365 (void) printf("%7llu %9s %s\n", 6366 (u_longlong_t)zc->zc_count, timebuf, 6367 dli.dli_sname); 6368 } 6369 (void) printf("\n"); 6370 } 6371 6372 /* 6373 * It's possible that we killed a child during a rename test, 6374 * in which case we'll have a 'ztest_tmp' pool lying around 6375 * instead of 'ztest'. Do a blind rename in case this happened. 6376 */ 6377 kernel_init(FREAD); 6378 if (spa_open(ztest_opts.zo_pool, &spa, FTAG) == 0) { 6379 spa_close(spa, FTAG); 6380 } else { 6381 char tmpname[ZFS_MAX_DATASET_NAME_LEN]; 6382 kernel_fini(); 6383 kernel_init(FREAD | FWRITE); 6384 (void) snprintf(tmpname, sizeof (tmpname), "%s_tmp", 6385 ztest_opts.zo_pool); 6386 (void) spa_rename(tmpname, ztest_opts.zo_pool); 6387 } 6388 kernel_fini(); 6389 6390 ztest_run_zdb(ztest_opts.zo_pool); 6391 } 6392 6393 if (ztest_opts.zo_verbose >= 1) { 6394 if (hasalt) { 6395 (void) printf("%d runs of older ztest: %s\n", older, 6396 ztest_opts.zo_alt_ztest); 6397 (void) printf("%d runs of newer ztest: %s\n", newer, 6398 cmd); 6399 } 6400 (void) printf("%d killed, %d completed, %.0f%% kill rate\n", 6401 kills, iters - kills, (100.0 * kills) / MAX(1, iters)); 6402 } 6403 6404 umem_free(cmd, MAXNAMELEN); 6405 6406 return (0); 6407} 6408