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.
8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9 * or https://opensource.org/licenses/CDDL-1.0.
10 * See the License for the specific language governing permissions
11 * and limitations under the License.
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]
22 * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
23 * Copyright (c) 2011, 2018 by Delphix. All rights reserved.
24 * Copyright 2011 Nexenta Systems, Inc. All rights reserved.
25 * Copyright (c) 2013 Steven Hartland. All rights reserved.
26 * Copyright (c) 2014 Integros [integros.com]
27 * Copyright 2017 Joyent, Inc.
28 * Copyright (c) 2017, Intel Corporation.
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.
35 * The overall design of the ztest program is as follows:
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".
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.
46 * (3) While all this is happening, we inject faults into the pool to
47 * verify that self-healing data really works.
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.
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.
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.
68 * (7) Threads are created with a reduced stack size, for sanity checking.
69 * Therefore, it's important not to allocate huge buffers on the stack.
71 * When run with no arguments, ztest runs for about five minutes and
72 * produces no output if successful. To get a little bit of information,
73 * specify -V. To get more information, specify -VV, and so on.
75 * To turn this into an overnight stress test, use -T to specify run time.
77 * You can ask more vdevs [-v], datasets [-d], or threads [-t]
78 * to increase the pool capacity, fanout, and overall stress level.
80 * Use the -k option to set the desired frequency of kills.
82 * When ztest invokes itself it passes all relevant information through a
83 * temporary file which is mmap-ed in the child process. This allows shared
84 * memory to survive the exec syscall. The ztest_shared_hdr_t struct is always
85 * stored at offset 0 of this file and contains information on the size and
86 * number of shared structures in the file. The information stored in this file
87 * must remain backwards compatible with older versions of ztest so that
88 * ztest can invoke them during backwards compatibility testing (-B).
91 #include <sys/zfs_context.h>
97 #include <sys/dmu_objset.h>
100 #include <sys/time.h>
101 #include <sys/wait.h>
102 #include <sys/mman.h>
103 #include <sys/resource.h>
106 #include <sys/zil_impl.h>
107 #include <sys/vdev_draid.h>
108 #include <sys/vdev_impl.h>
109 #include <sys/vdev_file.h>
110 #include <sys/vdev_initialize.h>
111 #include <sys/vdev_raidz.h>
112 #include <sys/vdev_trim.h>
113 #include <sys/spa_impl.h>
114 #include <sys/metaslab_impl.h>
115 #include <sys/dsl_prop.h>
116 #include <sys/dsl_dataset.h>
117 #include <sys/dsl_destroy.h>
118 #include <sys/dsl_scan.h>
119 #include <sys/zio_checksum.h>
120 #include <sys/zfs_refcount.h>
121 #include <sys/zfeature.h>
122 #include <sys/dsl_userhold.h>
124 #include <sys/blake3.h>
133 #include <sys/fs/zfs.h>
134 #include <zfs_fletcher.h>
135 #include <libnvpair.h>
136 #include <libzutil.h>
137 #include <sys/crypto/icp.h>
138 #include <sys/zfs_impl.h>
139 #if (__GLIBC__ && !__UCLIBC__)
140 #include <execinfo.h> /* for backtrace() */
143 static int ztest_fd_data = -1;
144 static int ztest_fd_rand = -1;
146 typedef struct ztest_shared_hdr {
147 uint64_t zh_hdr_size;
148 uint64_t zh_opts_size;
150 uint64_t zh_stats_size;
151 uint64_t zh_stats_count;
153 uint64_t zh_ds_count;
154 } ztest_shared_hdr_t;
156 static ztest_shared_hdr_t *ztest_shared_hdr;
158 enum ztest_class_state {
159 ZTEST_VDEV_CLASS_OFF,
164 #define ZO_GVARS_MAX_ARGLEN ((size_t)64)
165 #define ZO_GVARS_MAX_COUNT ((size_t)10)
167 typedef struct ztest_shared_opts {
168 char zo_pool[ZFS_MAX_DATASET_NAME_LEN];
169 char zo_dir[ZFS_MAX_DATASET_NAME_LEN];
170 char zo_alt_ztest[MAXNAMELEN];
171 char zo_alt_libpath[MAXNAMELEN];
173 uint64_t zo_vdevtime;
177 int zo_raid_children;
179 char zo_raid_type[8];
184 uint64_t zo_passtime;
185 uint64_t zo_killrate;
189 uint64_t zo_maxloops;
190 uint64_t zo_metaslab_force_ganging;
192 int zo_special_vdevs;
195 char zo_gvars[ZO_GVARS_MAX_COUNT][ZO_GVARS_MAX_ARGLEN];
196 } ztest_shared_opts_t;
198 /* Default values for command line options. */
199 #define DEFAULT_POOL "ztest"
200 #define DEFAULT_VDEV_DIR "/tmp"
201 #define DEFAULT_VDEV_COUNT 5
202 #define DEFAULT_VDEV_SIZE (SPA_MINDEVSIZE * 4) /* 256m default size */
203 #define DEFAULT_VDEV_SIZE_STR "256M"
204 #define DEFAULT_ASHIFT SPA_MINBLOCKSHIFT
205 #define DEFAULT_MIRRORS 2
206 #define DEFAULT_RAID_CHILDREN 4
207 #define DEFAULT_RAID_PARITY 1
208 #define DEFAULT_DRAID_DATA 4
209 #define DEFAULT_DRAID_SPARES 1
210 #define DEFAULT_DATASETS_COUNT 7
211 #define DEFAULT_THREADS 23
212 #define DEFAULT_RUN_TIME 300 /* 300 seconds */
213 #define DEFAULT_RUN_TIME_STR "300 sec"
214 #define DEFAULT_PASS_TIME 60 /* 60 seconds */
215 #define DEFAULT_PASS_TIME_STR "60 sec"
216 #define DEFAULT_KILL_RATE 70 /* 70% kill rate */
217 #define DEFAULT_KILLRATE_STR "70%"
218 #define DEFAULT_INITS 1
219 #define DEFAULT_MAX_LOOPS 50 /* 5 minutes */
220 #define DEFAULT_FORCE_GANGING (64 << 10)
221 #define DEFAULT_FORCE_GANGING_STR "64K"
223 /* Simplifying assumption: -1 is not a valid default. */
224 #define NO_DEFAULT -1
226 static const ztest_shared_opts_t ztest_opts_defaults = {
227 .zo_pool = DEFAULT_POOL,
228 .zo_dir = DEFAULT_VDEV_DIR,
229 .zo_alt_ztest = { '\0' },
230 .zo_alt_libpath = { '\0' },
231 .zo_vdevs = DEFAULT_VDEV_COUNT,
232 .zo_ashift = DEFAULT_ASHIFT,
233 .zo_mirrors = DEFAULT_MIRRORS,
234 .zo_raid_children = DEFAULT_RAID_CHILDREN,
235 .zo_raid_parity = DEFAULT_RAID_PARITY,
236 .zo_raid_type = VDEV_TYPE_RAIDZ,
237 .zo_vdev_size = DEFAULT_VDEV_SIZE,
238 .zo_draid_data = DEFAULT_DRAID_DATA, /* data drives */
239 .zo_draid_spares = DEFAULT_DRAID_SPARES, /* distributed spares */
240 .zo_datasets = DEFAULT_DATASETS_COUNT,
241 .zo_threads = DEFAULT_THREADS,
242 .zo_passtime = DEFAULT_PASS_TIME,
243 .zo_killrate = DEFAULT_KILL_RATE,
246 .zo_init = DEFAULT_INITS,
247 .zo_time = DEFAULT_RUN_TIME,
248 .zo_maxloops = DEFAULT_MAX_LOOPS, /* max loops during spa_freeze() */
249 .zo_metaslab_force_ganging = DEFAULT_FORCE_GANGING,
250 .zo_special_vdevs = ZTEST_VDEV_CLASS_RND,
254 extern uint64_t metaslab_force_ganging;
255 extern uint64_t metaslab_df_alloc_threshold;
256 extern uint64_t zfs_deadman_synctime_ms;
257 extern uint_t metaslab_preload_limit;
258 extern int zfs_compressed_arc_enabled;
259 extern int zfs_abd_scatter_enabled;
260 extern uint_t dmu_object_alloc_chunk_shift;
261 extern boolean_t zfs_force_some_double_word_sm_entries;
262 extern unsigned long zio_decompress_fail_fraction;
263 extern unsigned long zfs_reconstruct_indirect_damage_fraction;
266 static ztest_shared_opts_t *ztest_shared_opts;
267 static ztest_shared_opts_t ztest_opts;
268 static const char *const ztest_wkeydata = "abcdefghijklmnopqrstuvwxyz012345";
270 typedef struct ztest_shared_ds {
274 static ztest_shared_ds_t *ztest_shared_ds;
275 #define ZTEST_GET_SHARED_DS(d) (&ztest_shared_ds[d])
277 #define BT_MAGIC 0x123456789abcdefULL
278 #define MAXFAULTS(zs) \
279 (MAX((zs)->zs_mirrors, 1) * (ztest_opts.zo_raid_parity + 1) - 1)
283 ZTEST_IO_WRITE_PATTERN,
284 ZTEST_IO_WRITE_ZEROES,
291 typedef struct ztest_block_tag {
295 uint64_t bt_dnodesize;
302 typedef struct bufwad {
309 * It would be better to use a rangelock_t per object. Unfortunately
310 * the rangelock_t is not a drop-in replacement for rl_t, because we
311 * still need to map from object ID to rangelock_t.
333 #define ZTEST_RANGE_LOCKS 64
334 #define ZTEST_OBJECT_LOCKS 64
337 * Object descriptor. Used as a template for object lookup/create/remove.
339 typedef struct ztest_od {
342 dmu_object_type_t od_type;
343 dmu_object_type_t od_crtype;
344 uint64_t od_blocksize;
345 uint64_t od_crblocksize;
346 uint64_t od_crdnodesize;
349 char od_name[ZFS_MAX_DATASET_NAME_LEN];
355 typedef struct ztest_ds {
356 ztest_shared_ds_t *zd_shared;
358 pthread_rwlock_t zd_zilog_lock;
360 ztest_od_t *zd_od; /* debugging aid */
361 char zd_name[ZFS_MAX_DATASET_NAME_LEN];
362 kmutex_t zd_dirobj_lock;
363 rll_t zd_object_lock[ZTEST_OBJECT_LOCKS];
364 rll_t zd_range_lock[ZTEST_RANGE_LOCKS];
368 * Per-iteration state.
370 typedef void ztest_func_t(ztest_ds_t *zd, uint64_t id);
372 typedef struct ztest_info {
373 ztest_func_t *zi_func; /* test function */
374 uint64_t zi_iters; /* iterations per execution */
375 uint64_t *zi_interval; /* execute every <interval> seconds */
376 const char *zi_funcname; /* name of test function */
379 typedef struct ztest_shared_callstate {
380 uint64_t zc_count; /* per-pass count */
381 uint64_t zc_time; /* per-pass time */
382 uint64_t zc_next; /* next time to call this function */
383 } ztest_shared_callstate_t;
385 static ztest_shared_callstate_t *ztest_shared_callstate;
386 #define ZTEST_GET_SHARED_CALLSTATE(c) (&ztest_shared_callstate[c])
388 ztest_func_t ztest_dmu_read_write;
389 ztest_func_t ztest_dmu_write_parallel;
390 ztest_func_t ztest_dmu_object_alloc_free;
391 ztest_func_t ztest_dmu_object_next_chunk;
392 ztest_func_t ztest_dmu_commit_callbacks;
393 ztest_func_t ztest_zap;
394 ztest_func_t ztest_zap_parallel;
395 ztest_func_t ztest_zil_commit;
396 ztest_func_t ztest_zil_remount;
397 ztest_func_t ztest_dmu_read_write_zcopy;
398 ztest_func_t ztest_dmu_objset_create_destroy;
399 ztest_func_t ztest_dmu_prealloc;
400 ztest_func_t ztest_fzap;
401 ztest_func_t ztest_dmu_snapshot_create_destroy;
402 ztest_func_t ztest_dsl_prop_get_set;
403 ztest_func_t ztest_spa_prop_get_set;
404 ztest_func_t ztest_spa_create_destroy;
405 ztest_func_t ztest_fault_inject;
406 ztest_func_t ztest_dmu_snapshot_hold;
407 ztest_func_t ztest_mmp_enable_disable;
408 ztest_func_t ztest_scrub;
409 ztest_func_t ztest_dsl_dataset_promote_busy;
410 ztest_func_t ztest_vdev_attach_detach;
411 ztest_func_t ztest_vdev_LUN_growth;
412 ztest_func_t ztest_vdev_add_remove;
413 ztest_func_t ztest_vdev_class_add;
414 ztest_func_t ztest_vdev_aux_add_remove;
415 ztest_func_t ztest_split_pool;
416 ztest_func_t ztest_reguid;
417 ztest_func_t ztest_spa_upgrade;
418 ztest_func_t ztest_device_removal;
419 ztest_func_t ztest_spa_checkpoint_create_discard;
420 ztest_func_t ztest_initialize;
421 ztest_func_t ztest_trim;
422 ztest_func_t ztest_blake3;
423 ztest_func_t ztest_fletcher;
424 ztest_func_t ztest_fletcher_incr;
425 ztest_func_t ztest_verify_dnode_bt;
427 static uint64_t zopt_always = 0ULL * NANOSEC; /* all the time */
428 static uint64_t zopt_incessant = 1ULL * NANOSEC / 10; /* every 1/10 second */
429 static uint64_t zopt_often = 1ULL * NANOSEC; /* every second */
430 static uint64_t zopt_sometimes = 10ULL * NANOSEC; /* every 10 seconds */
431 static uint64_t zopt_rarely = 60ULL * NANOSEC; /* every 60 seconds */
433 #define ZTI_INIT(func, iters, interval) \
434 { .zi_func = (func), \
435 .zi_iters = (iters), \
436 .zi_interval = (interval), \
437 .zi_funcname = # func }
439 static ztest_info_t ztest_info[] = {
440 ZTI_INIT(ztest_dmu_read_write, 1, &zopt_always),
441 ZTI_INIT(ztest_dmu_write_parallel, 10, &zopt_always),
442 ZTI_INIT(ztest_dmu_object_alloc_free, 1, &zopt_always),
443 ZTI_INIT(ztest_dmu_object_next_chunk, 1, &zopt_sometimes),
444 ZTI_INIT(ztest_dmu_commit_callbacks, 1, &zopt_always),
445 ZTI_INIT(ztest_zap, 30, &zopt_always),
446 ZTI_INIT(ztest_zap_parallel, 100, &zopt_always),
447 ZTI_INIT(ztest_split_pool, 1, &zopt_sometimes),
448 ZTI_INIT(ztest_zil_commit, 1, &zopt_incessant),
449 ZTI_INIT(ztest_zil_remount, 1, &zopt_sometimes),
450 ZTI_INIT(ztest_dmu_read_write_zcopy, 1, &zopt_often),
451 ZTI_INIT(ztest_dmu_objset_create_destroy, 1, &zopt_often),
452 ZTI_INIT(ztest_dsl_prop_get_set, 1, &zopt_often),
453 ZTI_INIT(ztest_spa_prop_get_set, 1, &zopt_sometimes),
455 ZTI_INIT(ztest_dmu_prealloc, 1, &zopt_sometimes),
457 ZTI_INIT(ztest_fzap, 1, &zopt_sometimes),
458 ZTI_INIT(ztest_dmu_snapshot_create_destroy, 1, &zopt_sometimes),
459 ZTI_INIT(ztest_spa_create_destroy, 1, &zopt_sometimes),
460 ZTI_INIT(ztest_fault_inject, 1, &zopt_sometimes),
461 ZTI_INIT(ztest_dmu_snapshot_hold, 1, &zopt_sometimes),
462 ZTI_INIT(ztest_mmp_enable_disable, 1, &zopt_sometimes),
463 ZTI_INIT(ztest_reguid, 1, &zopt_rarely),
464 ZTI_INIT(ztest_scrub, 1, &zopt_rarely),
465 ZTI_INIT(ztest_spa_upgrade, 1, &zopt_rarely),
466 ZTI_INIT(ztest_dsl_dataset_promote_busy, 1, &zopt_rarely),
467 ZTI_INIT(ztest_vdev_attach_detach, 1, &zopt_sometimes),
468 ZTI_INIT(ztest_vdev_LUN_growth, 1, &zopt_rarely),
469 ZTI_INIT(ztest_vdev_add_remove, 1, &ztest_opts.zo_vdevtime),
470 ZTI_INIT(ztest_vdev_class_add, 1, &ztest_opts.zo_vdevtime),
471 ZTI_INIT(ztest_vdev_aux_add_remove, 1, &ztest_opts.zo_vdevtime),
472 ZTI_INIT(ztest_device_removal, 1, &zopt_sometimes),
473 ZTI_INIT(ztest_spa_checkpoint_create_discard, 1, &zopt_rarely),
474 ZTI_INIT(ztest_initialize, 1, &zopt_sometimes),
475 ZTI_INIT(ztest_trim, 1, &zopt_sometimes),
476 ZTI_INIT(ztest_blake3, 1, &zopt_rarely),
477 ZTI_INIT(ztest_fletcher, 1, &zopt_rarely),
478 ZTI_INIT(ztest_fletcher_incr, 1, &zopt_rarely),
479 ZTI_INIT(ztest_verify_dnode_bt, 1, &zopt_sometimes),
482 #define ZTEST_FUNCS (sizeof (ztest_info) / sizeof (ztest_info_t))
485 * The following struct is used to hold a list of uncalled commit callbacks.
486 * The callbacks are ordered by txg number.
488 typedef struct ztest_cb_list {
489 kmutex_t zcl_callbacks_lock;
490 list_t zcl_callbacks;
494 * Stuff we need to share writably between parent and child.
496 typedef struct ztest_shared {
497 boolean_t zs_do_init;
498 hrtime_t zs_proc_start;
499 hrtime_t zs_proc_stop;
500 hrtime_t zs_thread_start;
501 hrtime_t zs_thread_stop;
502 hrtime_t zs_thread_kill;
503 uint64_t zs_enospc_count;
504 uint64_t zs_vdev_next_leaf;
505 uint64_t zs_vdev_aux;
510 uint64_t zs_metaslab_sz;
511 uint64_t zs_metaslab_df_alloc_threshold;
515 #define ID_PARALLEL -1ULL
517 static char ztest_dev_template[] = "%s/%s.%llua";
518 static char ztest_aux_template[] = "%s/%s.%s.%llu";
519 static ztest_shared_t *ztest_shared;
521 static spa_t *ztest_spa = NULL;
522 static ztest_ds_t *ztest_ds;
524 static kmutex_t ztest_vdev_lock;
525 static boolean_t ztest_device_removal_active = B_FALSE;
526 static boolean_t ztest_pool_scrubbed = B_FALSE;
527 static kmutex_t ztest_checkpoint_lock;
530 * The ztest_name_lock protects the pool and dataset namespace used by
531 * the individual tests. To modify the namespace, consumers must grab
532 * this lock as writer. Grabbing the lock as reader will ensure that the
533 * namespace does not change while the lock is held.
535 static pthread_rwlock_t ztest_name_lock;
537 static boolean_t ztest_dump_core = B_TRUE;
538 static boolean_t ztest_exiting;
540 /* Global commit callback list */
541 static ztest_cb_list_t zcl;
542 /* Commit cb delay */
543 static uint64_t zc_min_txg_delay = UINT64_MAX;
544 static int zc_cb_counter = 0;
547 * Minimum number of commit callbacks that need to be registered for us to check
548 * whether the minimum txg delay is acceptable.
550 #define ZTEST_COMMIT_CB_MIN_REG 100
553 * If a number of txgs equal to this threshold have been created after a commit
554 * callback has been registered but not called, then we assume there is an
555 * implementation bug.
557 #define ZTEST_COMMIT_CB_THRESH (TXG_CONCURRENT_STATES + 1000)
560 ZTEST_META_DNODE = 0,
565 static __attribute__((noreturn)) void usage(boolean_t requested);
566 static int ztest_scrub_impl(spa_t *spa);
569 * These libumem hooks provide a reasonable set of defaults for the allocator's
570 * debugging facilities.
573 _umem_debug_init(void)
575 return ("default,verbose"); /* $UMEM_DEBUG setting */
579 _umem_logging_init(void)
581 return ("fail,contents"); /* $UMEM_LOGGING setting */
585 dump_debug_buffer(void)
587 ssize_t ret __attribute__((unused));
589 if (!ztest_opts.zo_dump_dbgmsg)
593 * We use write() instead of printf() so that this function
594 * is safe to call from a signal handler.
596 ret = write(STDOUT_FILENO, "\n", 1);
597 zfs_dbgmsg_print("ztest");
600 #define BACKTRACE_SZ 100
602 static void sig_handler(int signo)
604 struct sigaction action;
605 #if (__GLIBC__ && !__UCLIBC__) /* backtrace() is a GNU extension */
607 void *buffer[BACKTRACE_SZ];
609 nptrs = backtrace(buffer, BACKTRACE_SZ);
610 backtrace_symbols_fd(buffer, nptrs, STDERR_FILENO);
615 * Restore default action and re-raise signal so SIGSEGV and
616 * SIGABRT can trigger a core dump.
618 action.sa_handler = SIG_DFL;
619 sigemptyset(&action.sa_mask);
621 (void) sigaction(signo, &action, NULL);
625 #define FATAL_MSG_SZ 1024
627 static const char *fatal_msg;
629 static __attribute__((format(printf, 2, 3))) __attribute__((noreturn)) void
630 fatal(int do_perror, const char *message, ...)
633 int save_errno = errno;
636 (void) fflush(stdout);
637 buf = umem_alloc(FATAL_MSG_SZ, UMEM_NOFAIL);
641 va_start(args, message);
642 (void) sprintf(buf, "ztest: ");
644 (void) vsprintf(buf + strlen(buf), message, args);
647 (void) snprintf(buf + strlen(buf), FATAL_MSG_SZ - strlen(buf),
648 ": %s", strerror(save_errno));
650 (void) fprintf(stderr, "%s\n", buf);
651 fatal_msg = buf; /* to ease debugging */
663 str2shift(const char *buf)
665 const char *ends = "BKMGTPEZ";
670 for (i = 0; i < strlen(ends); i++) {
671 if (toupper(buf[0]) == ends[i])
674 if (i == strlen(ends)) {
675 (void) fprintf(stderr, "ztest: invalid bytes suffix: %s\n",
679 if (buf[1] == '\0' || (toupper(buf[1]) == 'B' && buf[2] == '\0')) {
682 (void) fprintf(stderr, "ztest: invalid bytes suffix: %s\n", buf);
687 nicenumtoull(const char *buf)
692 val = strtoull(buf, &end, 0);
694 (void) fprintf(stderr, "ztest: bad numeric value: %s\n", buf);
696 } else if (end[0] == '.') {
697 double fval = strtod(buf, &end);
698 fval *= pow(2, str2shift(end));
700 * UINT64_MAX is not exactly representable as a double.
701 * The closest representation is UINT64_MAX + 1, so we
702 * use a >= comparison instead of > for the bounds check.
704 if (fval >= (double)UINT64_MAX) {
705 (void) fprintf(stderr, "ztest: value too large: %s\n",
709 val = (uint64_t)fval;
711 int shift = str2shift(end);
712 if (shift >= 64 || (val << shift) >> shift != val) {
713 (void) fprintf(stderr, "ztest: value too large: %s\n",
722 typedef struct ztest_option {
723 const char short_opt;
724 const char *long_opt;
725 const char *long_opt_param;
727 unsigned int default_int;
728 const char *default_str;
732 * The following option_table is used for generating the usage info as well as
733 * the long and short option information for calling getopt_long().
735 static ztest_option_t option_table[] = {
736 { 'v', "vdevs", "INTEGER", "Number of vdevs", DEFAULT_VDEV_COUNT,
738 { 's', "vdev-size", "INTEGER", "Size of each vdev",
739 NO_DEFAULT, DEFAULT_VDEV_SIZE_STR},
740 { 'a', "alignment-shift", "INTEGER",
741 "Alignment shift; use 0 for random", DEFAULT_ASHIFT, NULL},
742 { 'm', "mirror-copies", "INTEGER", "Number of mirror copies",
743 DEFAULT_MIRRORS, NULL},
744 { 'r', "raid-disks", "INTEGER", "Number of raidz/draid disks",
745 DEFAULT_RAID_CHILDREN, NULL},
746 { 'R', "raid-parity", "INTEGER", "Raid parity",
747 DEFAULT_RAID_PARITY, NULL},
748 { 'K', "raid-kind", "raidz|draid|random", "Raid kind",
749 NO_DEFAULT, "random"},
750 { 'D', "draid-data", "INTEGER", "Number of draid data drives",
751 DEFAULT_DRAID_DATA, NULL},
752 { 'S', "draid-spares", "INTEGER", "Number of draid spares",
753 DEFAULT_DRAID_SPARES, NULL},
754 { 'd', "datasets", "INTEGER", "Number of datasets",
755 DEFAULT_DATASETS_COUNT, NULL},
756 { 't', "threads", "INTEGER", "Number of ztest threads",
757 DEFAULT_THREADS, NULL},
758 { 'g', "gang-block-threshold", "INTEGER",
759 "Metaslab gang block threshold",
760 NO_DEFAULT, DEFAULT_FORCE_GANGING_STR},
761 { 'i', "init-count", "INTEGER", "Number of times to initialize pool",
762 DEFAULT_INITS, NULL},
763 { 'k', "kill-percentage", "INTEGER", "Kill percentage",
764 NO_DEFAULT, DEFAULT_KILLRATE_STR},
765 { 'p', "pool-name", "STRING", "Pool name",
766 NO_DEFAULT, DEFAULT_POOL},
767 { 'f', "vdev-file-directory", "PATH", "File directory for vdev files",
768 NO_DEFAULT, DEFAULT_VDEV_DIR},
769 { 'M', "multi-host", NULL,
770 "Multi-host; simulate pool imported on remote host",
772 { 'E', "use-existing-pool", NULL,
773 "Use existing pool instead of creating new one", NO_DEFAULT, NULL},
774 { 'T', "run-time", "INTEGER", "Total run time",
775 NO_DEFAULT, DEFAULT_RUN_TIME_STR},
776 { 'P', "pass-time", "INTEGER", "Time per pass",
777 NO_DEFAULT, DEFAULT_PASS_TIME_STR},
778 { 'F', "freeze-loops", "INTEGER", "Max loops in spa_freeze()",
779 DEFAULT_MAX_LOOPS, NULL},
780 { 'B', "alt-ztest", "PATH", "Alternate ztest path",
782 { 'C', "vdev-class-state", "on|off|random", "vdev class state",
783 NO_DEFAULT, "random"},
784 { 'o', "option", "\"OPTION=INTEGER\"",
785 "Set global variable to an unsigned 32-bit integer value",
787 { 'G', "dump-debug-msg", NULL,
788 "Dump zfs_dbgmsg buffer before exiting due to an error",
790 { 'V', "verbose", NULL,
791 "Verbose (use multiple times for ever more verbosity)",
793 { 'h', "help", NULL, "Show this help",
798 static struct option *long_opts = NULL;
799 static char *short_opts = NULL;
804 ASSERT3P(long_opts, ==, NULL);
805 ASSERT3P(short_opts, ==, NULL);
807 int count = sizeof (option_table) / sizeof (option_table[0]);
808 long_opts = umem_alloc(sizeof (struct option) * count, UMEM_NOFAIL);
810 short_opts = umem_alloc(sizeof (char) * 2 * count, UMEM_NOFAIL);
811 int short_opt_index = 0;
813 for (int i = 0; i < count; i++) {
814 long_opts[i].val = option_table[i].short_opt;
815 long_opts[i].name = option_table[i].long_opt;
816 long_opts[i].has_arg = option_table[i].long_opt_param != NULL
817 ? required_argument : no_argument;
818 long_opts[i].flag = NULL;
819 short_opts[short_opt_index++] = option_table[i].short_opt;
820 if (option_table[i].long_opt_param != NULL) {
821 short_opts[short_opt_index++] = ':';
829 int count = sizeof (option_table) / sizeof (option_table[0]);
831 umem_free(long_opts, sizeof (struct option) * count);
832 umem_free(short_opts, sizeof (char) * 2 * count);
838 static __attribute__((noreturn)) void
839 usage(boolean_t requested)
842 FILE *fp = requested ? stdout : stderr;
844 (void) fprintf(fp, "Usage: %s [OPTIONS...]\n", DEFAULT_POOL);
845 for (int i = 0; option_table[i].short_opt != 0; i++) {
846 if (option_table[i].long_opt_param != NULL) {
847 (void) sprintf(option, " -%c --%s=%s",
848 option_table[i].short_opt,
849 option_table[i].long_opt,
850 option_table[i].long_opt_param);
852 (void) sprintf(option, " -%c --%s",
853 option_table[i].short_opt,
854 option_table[i].long_opt);
856 (void) fprintf(fp, " %-40s%s", option,
857 option_table[i].comment);
859 if (option_table[i].long_opt_param != NULL) {
860 if (option_table[i].default_str != NULL) {
861 (void) fprintf(fp, " (default: %s)",
862 option_table[i].default_str);
863 } else if (option_table[i].default_int != NO_DEFAULT) {
864 (void) fprintf(fp, " (default: %u)",
865 option_table[i].default_int);
868 (void) fprintf(fp, "\n");
870 exit(requested ? 0 : 1);
874 ztest_random(uint64_t range)
878 ASSERT3S(ztest_fd_rand, >=, 0);
883 if (read(ztest_fd_rand, &r, sizeof (r)) != sizeof (r))
884 fatal(B_TRUE, "short read from /dev/urandom");
890 ztest_parse_name_value(const char *input, ztest_shared_opts_t *zo)
894 int state = ZTEST_VDEV_CLASS_RND;
896 (void) strlcpy(name, input, sizeof (name));
898 value = strchr(name, '=');
900 (void) fprintf(stderr, "missing value in property=value "
901 "'-C' argument (%s)\n", input);
907 if (strcmp(value, "on") == 0) {
908 state = ZTEST_VDEV_CLASS_ON;
909 } else if (strcmp(value, "off") == 0) {
910 state = ZTEST_VDEV_CLASS_OFF;
911 } else if (strcmp(value, "random") == 0) {
912 state = ZTEST_VDEV_CLASS_RND;
914 (void) fprintf(stderr, "invalid property value '%s'\n", value);
918 if (strcmp(name, "special") == 0) {
919 zo->zo_special_vdevs = state;
921 (void) fprintf(stderr, "invalid property name '%s'\n", name);
924 if (zo->zo_verbose >= 3)
925 (void) printf("%s vdev state is '%s'\n", name, value);
929 process_options(int argc, char **argv)
932 ztest_shared_opts_t *zo = &ztest_opts;
936 const char *raid_kind = "random";
938 memcpy(zo, &ztest_opts_defaults, sizeof (*zo));
942 while ((opt = getopt_long(argc, argv, short_opts, long_opts,
962 value = nicenumtoull(optarg);
966 zo->zo_vdevs = value;
969 zo->zo_vdev_size = MAX(SPA_MINDEVSIZE, value);
972 zo->zo_ashift = value;
975 zo->zo_mirrors = value;
978 zo->zo_raid_children = MAX(1, value);
981 zo->zo_raid_parity = MIN(MAX(value, 1), 3);
987 zo->zo_draid_data = MAX(1, value);
990 zo->zo_draid_spares = MAX(1, value);
993 zo->zo_datasets = MAX(1, value);
996 zo->zo_threads = MAX(1, value);
999 zo->zo_metaslab_force_ganging =
1000 MAX(SPA_MINBLOCKSIZE << 1, value);
1003 zo->zo_init = value;
1006 zo->zo_killrate = value;
1009 (void) strlcpy(zo->zo_pool, optarg,
1010 sizeof (zo->zo_pool));
1013 path = realpath(optarg, NULL);
1015 (void) fprintf(stderr, "error: %s: %s\n",
1016 optarg, strerror(errno));
1019 (void) strlcpy(zo->zo_dir, path,
1020 sizeof (zo->zo_dir));
1025 zo->zo_mmp_test = 1;
1034 zo->zo_time = value;
1037 zo->zo_passtime = MAX(1, value);
1040 zo->zo_maxloops = MAX(1, value);
1043 (void) strlcpy(zo->zo_alt_ztest, optarg,
1044 sizeof (zo->zo_alt_ztest));
1047 ztest_parse_name_value(optarg, zo);
1050 if (zo->zo_gvars_count >= ZO_GVARS_MAX_COUNT) {
1051 (void) fprintf(stderr,
1052 "max global var count (%zu) exceeded\n",
1053 ZO_GVARS_MAX_COUNT);
1056 char *v = zo->zo_gvars[zo->zo_gvars_count];
1057 if (strlcpy(v, optarg, ZO_GVARS_MAX_ARGLEN) >=
1058 ZO_GVARS_MAX_ARGLEN) {
1059 (void) fprintf(stderr,
1060 "global var option '%s' is too long\n",
1064 zo->zo_gvars_count++;
1067 zo->zo_dump_dbgmsg = 1;
1081 /* When raid choice is 'random' add a draid pool 50% of the time */
1082 if (strcmp(raid_kind, "random") == 0) {
1083 raid_kind = (ztest_random(2) == 0) ? "draid" : "raidz";
1085 if (ztest_opts.zo_verbose >= 3)
1086 (void) printf("choosing RAID type '%s'\n", raid_kind);
1089 if (strcmp(raid_kind, "draid") == 0) {
1090 uint64_t min_devsize;
1092 /* With fewer disk use 256M, otherwise 128M is OK */
1093 min_devsize = (ztest_opts.zo_raid_children < 16) ?
1094 (256ULL << 20) : (128ULL << 20);
1096 /* No top-level mirrors with dRAID for now */
1099 /* Use more appropriate defaults for dRAID */
1100 if (zo->zo_vdevs == ztest_opts_defaults.zo_vdevs)
1102 if (zo->zo_raid_children ==
1103 ztest_opts_defaults.zo_raid_children)
1104 zo->zo_raid_children = 16;
1105 if (zo->zo_ashift < 12)
1107 if (zo->zo_vdev_size < min_devsize)
1108 zo->zo_vdev_size = min_devsize;
1110 if (zo->zo_draid_data + zo->zo_raid_parity >
1111 zo->zo_raid_children - zo->zo_draid_spares) {
1112 (void) fprintf(stderr, "error: too few draid "
1113 "children (%d) for stripe width (%d)\n",
1114 zo->zo_raid_children,
1115 zo->zo_draid_data + zo->zo_raid_parity);
1119 (void) strlcpy(zo->zo_raid_type, VDEV_TYPE_DRAID,
1120 sizeof (zo->zo_raid_type));
1122 } else /* using raidz */ {
1123 ASSERT0(strcmp(raid_kind, "raidz"));
1125 zo->zo_raid_parity = MIN(zo->zo_raid_parity,
1126 zo->zo_raid_children - 1);
1130 (zo->zo_vdevs > 0 ? zo->zo_time * NANOSEC / zo->zo_vdevs :
1133 if (*zo->zo_alt_ztest) {
1134 const char *invalid_what = "ztest";
1135 char *val = zo->zo_alt_ztest;
1136 if (0 != access(val, X_OK) ||
1137 (strrchr(val, '/') == NULL && (errno == EINVAL)))
1140 int dirlen = strrchr(val, '/') - val;
1141 strlcpy(zo->zo_alt_libpath, val,
1142 MIN(sizeof (zo->zo_alt_libpath), dirlen + 1));
1143 invalid_what = "library path", val = zo->zo_alt_libpath;
1144 if (strrchr(val, '/') == NULL && (errno == EINVAL))
1146 *strrchr(val, '/') = '\0';
1147 strlcat(val, "/lib", sizeof (zo->zo_alt_libpath));
1149 if (0 != access(zo->zo_alt_libpath, X_OK))
1154 ztest_dump_core = B_FALSE;
1155 fatal(B_TRUE, "invalid alternate %s %s", invalid_what, val);
1160 ztest_kill(ztest_shared_t *zs)
1162 zs->zs_alloc = metaslab_class_get_alloc(spa_normal_class(ztest_spa));
1163 zs->zs_space = metaslab_class_get_space(spa_normal_class(ztest_spa));
1166 * Before we kill ourselves, make sure that the config is updated.
1167 * See comment above spa_write_cachefile().
1169 mutex_enter(&spa_namespace_lock);
1170 spa_write_cachefile(ztest_spa, B_FALSE, B_FALSE, B_FALSE);
1171 mutex_exit(&spa_namespace_lock);
1173 (void) raise(SIGKILL);
1177 ztest_record_enospc(const char *s)
1180 ztest_shared->zs_enospc_count++;
1184 ztest_get_ashift(void)
1186 if (ztest_opts.zo_ashift == 0)
1187 return (SPA_MINBLOCKSHIFT + ztest_random(5));
1188 return (ztest_opts.zo_ashift);
1192 ztest_is_draid_spare(const char *name)
1194 uint64_t spare_id = 0, parity = 0, vdev_id = 0;
1196 if (sscanf(name, VDEV_TYPE_DRAID "%"PRIu64"-%"PRIu64"-%"PRIu64"",
1197 &parity, &vdev_id, &spare_id) == 3) {
1205 make_vdev_file(const char *path, const char *aux, const char *pool,
1206 size_t size, uint64_t ashift)
1208 char *pathbuf = NULL;
1211 boolean_t draid_spare = B_FALSE;
1215 ashift = ztest_get_ashift();
1218 pathbuf = umem_alloc(MAXPATHLEN, UMEM_NOFAIL);
1222 vdev = ztest_shared->zs_vdev_aux;
1223 (void) snprintf(pathbuf, MAXPATHLEN,
1224 ztest_aux_template, ztest_opts.zo_dir,
1225 pool == NULL ? ztest_opts.zo_pool : pool,
1228 vdev = ztest_shared->zs_vdev_next_leaf++;
1229 (void) snprintf(pathbuf, MAXPATHLEN,
1230 ztest_dev_template, ztest_opts.zo_dir,
1231 pool == NULL ? ztest_opts.zo_pool : pool, vdev);
1234 draid_spare = ztest_is_draid_spare(path);
1237 if (size != 0 && !draid_spare) {
1238 int fd = open(path, O_RDWR | O_CREAT | O_TRUNC, 0666);
1240 fatal(B_TRUE, "can't open %s", path);
1241 if (ftruncate(fd, size) != 0)
1242 fatal(B_TRUE, "can't ftruncate %s", path);
1246 file = fnvlist_alloc();
1247 fnvlist_add_string(file, ZPOOL_CONFIG_TYPE,
1248 draid_spare ? VDEV_TYPE_DRAID_SPARE : VDEV_TYPE_FILE);
1249 fnvlist_add_string(file, ZPOOL_CONFIG_PATH, path);
1250 fnvlist_add_uint64(file, ZPOOL_CONFIG_ASHIFT, ashift);
1251 umem_free(pathbuf, MAXPATHLEN);
1257 make_vdev_raid(const char *path, const char *aux, const char *pool, size_t size,
1258 uint64_t ashift, int r)
1260 nvlist_t *raid, **child;
1264 return (make_vdev_file(path, aux, pool, size, ashift));
1265 child = umem_alloc(r * sizeof (nvlist_t *), UMEM_NOFAIL);
1267 for (c = 0; c < r; c++)
1268 child[c] = make_vdev_file(path, aux, pool, size, ashift);
1270 raid = fnvlist_alloc();
1271 fnvlist_add_string(raid, ZPOOL_CONFIG_TYPE,
1272 ztest_opts.zo_raid_type);
1273 fnvlist_add_uint64(raid, ZPOOL_CONFIG_NPARITY,
1274 ztest_opts.zo_raid_parity);
1275 fnvlist_add_nvlist_array(raid, ZPOOL_CONFIG_CHILDREN,
1276 (const nvlist_t **)child, r);
1278 if (strcmp(ztest_opts.zo_raid_type, VDEV_TYPE_DRAID) == 0) {
1279 uint64_t ndata = ztest_opts.zo_draid_data;
1280 uint64_t nparity = ztest_opts.zo_raid_parity;
1281 uint64_t nspares = ztest_opts.zo_draid_spares;
1282 uint64_t children = ztest_opts.zo_raid_children;
1283 uint64_t ngroups = 1;
1286 * Calculate the minimum number of groups required to fill a
1287 * slice. This is the LCM of the stripe width (data + parity)
1288 * and the number of data drives (children - spares).
1290 while (ngroups * (ndata + nparity) % (children - nspares) != 0)
1293 /* Store the basic dRAID configuration. */
1294 fnvlist_add_uint64(raid, ZPOOL_CONFIG_DRAID_NDATA, ndata);
1295 fnvlist_add_uint64(raid, ZPOOL_CONFIG_DRAID_NSPARES, nspares);
1296 fnvlist_add_uint64(raid, ZPOOL_CONFIG_DRAID_NGROUPS, ngroups);
1299 for (c = 0; c < r; c++)
1300 fnvlist_free(child[c]);
1302 umem_free(child, r * sizeof (nvlist_t *));
1308 make_vdev_mirror(const char *path, const char *aux, const char *pool,
1309 size_t size, uint64_t ashift, int r, int m)
1311 nvlist_t *mirror, **child;
1315 return (make_vdev_raid(path, aux, pool, size, ashift, r));
1317 child = umem_alloc(m * sizeof (nvlist_t *), UMEM_NOFAIL);
1319 for (c = 0; c < m; c++)
1320 child[c] = make_vdev_raid(path, aux, pool, size, ashift, r);
1322 mirror = fnvlist_alloc();
1323 fnvlist_add_string(mirror, ZPOOL_CONFIG_TYPE, VDEV_TYPE_MIRROR);
1324 fnvlist_add_nvlist_array(mirror, ZPOOL_CONFIG_CHILDREN,
1325 (const nvlist_t **)child, m);
1327 for (c = 0; c < m; c++)
1328 fnvlist_free(child[c]);
1330 umem_free(child, m * sizeof (nvlist_t *));
1336 make_vdev_root(const char *path, const char *aux, const char *pool, size_t size,
1337 uint64_t ashift, const char *class, int r, int m, int t)
1339 nvlist_t *root, **child;
1345 log = (class != NULL && strcmp(class, "log") == 0);
1347 child = umem_alloc(t * sizeof (nvlist_t *), UMEM_NOFAIL);
1349 for (c = 0; c < t; c++) {
1350 child[c] = make_vdev_mirror(path, aux, pool, size, ashift,
1352 fnvlist_add_uint64(child[c], ZPOOL_CONFIG_IS_LOG, log);
1354 if (class != NULL && class[0] != '\0') {
1355 ASSERT(m > 1 || log); /* expecting a mirror */
1356 fnvlist_add_string(child[c],
1357 ZPOOL_CONFIG_ALLOCATION_BIAS, class);
1361 root = fnvlist_alloc();
1362 fnvlist_add_string(root, ZPOOL_CONFIG_TYPE, VDEV_TYPE_ROOT);
1363 fnvlist_add_nvlist_array(root, aux ? aux : ZPOOL_CONFIG_CHILDREN,
1364 (const nvlist_t **)child, t);
1366 for (c = 0; c < t; c++)
1367 fnvlist_free(child[c]);
1369 umem_free(child, t * sizeof (nvlist_t *));
1375 * Find a random spa version. Returns back a random spa version in the
1376 * range [initial_version, SPA_VERSION_FEATURES].
1379 ztest_random_spa_version(uint64_t initial_version)
1381 uint64_t version = initial_version;
1383 if (version <= SPA_VERSION_BEFORE_FEATURES) {
1385 ztest_random(SPA_VERSION_BEFORE_FEATURES - version + 1);
1388 if (version > SPA_VERSION_BEFORE_FEATURES)
1389 version = SPA_VERSION_FEATURES;
1391 ASSERT(SPA_VERSION_IS_SUPPORTED(version));
1396 ztest_random_blocksize(void)
1398 ASSERT3U(ztest_spa->spa_max_ashift, !=, 0);
1401 * Choose a block size >= the ashift.
1402 * If the SPA supports new MAXBLOCKSIZE, test up to 1MB blocks.
1404 int maxbs = SPA_OLD_MAXBLOCKSHIFT;
1405 if (spa_maxblocksize(ztest_spa) == SPA_MAXBLOCKSIZE)
1407 uint64_t block_shift =
1408 ztest_random(maxbs - ztest_spa->spa_max_ashift + 1);
1409 return (1 << (SPA_MINBLOCKSHIFT + block_shift));
1413 ztest_random_dnodesize(void)
1416 int max_slots = spa_maxdnodesize(ztest_spa) >> DNODE_SHIFT;
1418 if (max_slots == DNODE_MIN_SLOTS)
1419 return (DNODE_MIN_SIZE);
1422 * Weight the random distribution more heavily toward smaller
1423 * dnode sizes since that is more likely to reflect real-world
1426 ASSERT3U(max_slots, >, 4);
1427 switch (ztest_random(10)) {
1429 slots = 5 + ztest_random(max_slots - 4);
1432 slots = 2 + ztest_random(3);
1439 return (slots << DNODE_SHIFT);
1443 ztest_random_ibshift(void)
1445 return (DN_MIN_INDBLKSHIFT +
1446 ztest_random(DN_MAX_INDBLKSHIFT - DN_MIN_INDBLKSHIFT + 1));
1450 ztest_random_vdev_top(spa_t *spa, boolean_t log_ok)
1453 vdev_t *rvd = spa->spa_root_vdev;
1456 ASSERT3U(spa_config_held(spa, SCL_ALL, RW_READER), !=, 0);
1459 top = ztest_random(rvd->vdev_children);
1460 tvd = rvd->vdev_child[top];
1461 } while (!vdev_is_concrete(tvd) || (tvd->vdev_islog && !log_ok) ||
1462 tvd->vdev_mg == NULL || tvd->vdev_mg->mg_class == NULL);
1468 ztest_random_dsl_prop(zfs_prop_t prop)
1473 value = zfs_prop_random_value(prop, ztest_random(-1ULL));
1474 } while (prop == ZFS_PROP_CHECKSUM && value == ZIO_CHECKSUM_OFF);
1480 ztest_dsl_prop_set_uint64(char *osname, zfs_prop_t prop, uint64_t value,
1483 const char *propname = zfs_prop_to_name(prop);
1484 const char *valname;
1489 error = dsl_prop_set_int(osname, propname,
1490 (inherit ? ZPROP_SRC_NONE : ZPROP_SRC_LOCAL), value);
1492 if (error == ENOSPC) {
1493 ztest_record_enospc(FTAG);
1498 setpoint = umem_alloc(MAXPATHLEN, UMEM_NOFAIL);
1499 VERIFY0(dsl_prop_get_integer(osname, propname, &curval, setpoint));
1501 if (ztest_opts.zo_verbose >= 6) {
1504 err = zfs_prop_index_to_string(prop, curval, &valname);
1506 (void) printf("%s %s = %llu at '%s'\n", osname,
1507 propname, (unsigned long long)curval, setpoint);
1509 (void) printf("%s %s = %s at '%s'\n",
1510 osname, propname, valname, setpoint);
1512 umem_free(setpoint, MAXPATHLEN);
1518 ztest_spa_prop_set_uint64(zpool_prop_t prop, uint64_t value)
1520 spa_t *spa = ztest_spa;
1521 nvlist_t *props = NULL;
1524 props = fnvlist_alloc();
1525 fnvlist_add_uint64(props, zpool_prop_to_name(prop), value);
1527 error = spa_prop_set(spa, props);
1529 fnvlist_free(props);
1531 if (error == ENOSPC) {
1532 ztest_record_enospc(FTAG);
1541 ztest_dmu_objset_own(const char *name, dmu_objset_type_t type,
1542 boolean_t readonly, boolean_t decrypt, const void *tag, objset_t **osp)
1546 char ddname[ZFS_MAX_DATASET_NAME_LEN];
1548 strlcpy(ddname, name, sizeof (ddname));
1549 cp = strchr(ddname, '@');
1553 err = dmu_objset_own(name, type, readonly, decrypt, tag, osp);
1554 while (decrypt && err == EACCES) {
1555 dsl_crypto_params_t *dcp;
1556 nvlist_t *crypto_args = fnvlist_alloc();
1558 fnvlist_add_uint8_array(crypto_args, "wkeydata",
1559 (uint8_t *)ztest_wkeydata, WRAPPING_KEY_LEN);
1560 VERIFY0(dsl_crypto_params_create_nvlist(DCP_CMD_NONE, NULL,
1561 crypto_args, &dcp));
1562 err = spa_keystore_load_wkey(ddname, dcp, B_FALSE);
1564 * Note: if there was an error loading, the wkey was not
1565 * consumed, and needs to be freed.
1567 dsl_crypto_params_free(dcp, (err != 0));
1568 fnvlist_free(crypto_args);
1570 if (err == EINVAL) {
1572 * We couldn't load a key for this dataset so try
1573 * the parent. This loop will eventually hit the
1574 * encryption root since ztest only makes clones
1575 * as children of their origin datasets.
1577 cp = strrchr(ddname, '/');
1584 } else if (err != 0) {
1588 err = dmu_objset_own(name, type, readonly, decrypt, tag, osp);
1596 ztest_rll_init(rll_t *rll)
1598 rll->rll_writer = NULL;
1599 rll->rll_readers = 0;
1600 mutex_init(&rll->rll_lock, NULL, MUTEX_DEFAULT, NULL);
1601 cv_init(&rll->rll_cv, NULL, CV_DEFAULT, NULL);
1605 ztest_rll_destroy(rll_t *rll)
1607 ASSERT3P(rll->rll_writer, ==, NULL);
1608 ASSERT0(rll->rll_readers);
1609 mutex_destroy(&rll->rll_lock);
1610 cv_destroy(&rll->rll_cv);
1614 ztest_rll_lock(rll_t *rll, rl_type_t type)
1616 mutex_enter(&rll->rll_lock);
1618 if (type == RL_READER) {
1619 while (rll->rll_writer != NULL)
1620 (void) cv_wait(&rll->rll_cv, &rll->rll_lock);
1623 while (rll->rll_writer != NULL || rll->rll_readers)
1624 (void) cv_wait(&rll->rll_cv, &rll->rll_lock);
1625 rll->rll_writer = curthread;
1628 mutex_exit(&rll->rll_lock);
1632 ztest_rll_unlock(rll_t *rll)
1634 mutex_enter(&rll->rll_lock);
1636 if (rll->rll_writer) {
1637 ASSERT0(rll->rll_readers);
1638 rll->rll_writer = NULL;
1640 ASSERT3S(rll->rll_readers, >, 0);
1641 ASSERT3P(rll->rll_writer, ==, NULL);
1645 if (rll->rll_writer == NULL && rll->rll_readers == 0)
1646 cv_broadcast(&rll->rll_cv);
1648 mutex_exit(&rll->rll_lock);
1652 ztest_object_lock(ztest_ds_t *zd, uint64_t object, rl_type_t type)
1654 rll_t *rll = &zd->zd_object_lock[object & (ZTEST_OBJECT_LOCKS - 1)];
1656 ztest_rll_lock(rll, type);
1660 ztest_object_unlock(ztest_ds_t *zd, uint64_t object)
1662 rll_t *rll = &zd->zd_object_lock[object & (ZTEST_OBJECT_LOCKS - 1)];
1664 ztest_rll_unlock(rll);
1668 ztest_range_lock(ztest_ds_t *zd, uint64_t object, uint64_t offset,
1669 uint64_t size, rl_type_t type)
1671 uint64_t hash = object ^ (offset % (ZTEST_RANGE_LOCKS + 1));
1672 rll_t *rll = &zd->zd_range_lock[hash & (ZTEST_RANGE_LOCKS - 1)];
1675 rl = umem_alloc(sizeof (*rl), UMEM_NOFAIL);
1676 rl->rl_object = object;
1677 rl->rl_offset = offset;
1681 ztest_rll_lock(rll, type);
1687 ztest_range_unlock(rl_t *rl)
1689 rll_t *rll = rl->rl_lock;
1691 ztest_rll_unlock(rll);
1693 umem_free(rl, sizeof (*rl));
1697 ztest_zd_init(ztest_ds_t *zd, ztest_shared_ds_t *szd, objset_t *os)
1700 zd->zd_zilog = dmu_objset_zil(os);
1701 zd->zd_shared = szd;
1702 dmu_objset_name(os, zd->zd_name);
1705 if (zd->zd_shared != NULL)
1706 zd->zd_shared->zd_seq = 0;
1708 VERIFY0(pthread_rwlock_init(&zd->zd_zilog_lock, NULL));
1709 mutex_init(&zd->zd_dirobj_lock, NULL, MUTEX_DEFAULT, NULL);
1711 for (l = 0; l < ZTEST_OBJECT_LOCKS; l++)
1712 ztest_rll_init(&zd->zd_object_lock[l]);
1714 for (l = 0; l < ZTEST_RANGE_LOCKS; l++)
1715 ztest_rll_init(&zd->zd_range_lock[l]);
1719 ztest_zd_fini(ztest_ds_t *zd)
1723 mutex_destroy(&zd->zd_dirobj_lock);
1724 (void) pthread_rwlock_destroy(&zd->zd_zilog_lock);
1726 for (l = 0; l < ZTEST_OBJECT_LOCKS; l++)
1727 ztest_rll_destroy(&zd->zd_object_lock[l]);
1729 for (l = 0; l < ZTEST_RANGE_LOCKS; l++)
1730 ztest_rll_destroy(&zd->zd_range_lock[l]);
1733 #define TXG_MIGHTWAIT (ztest_random(10) == 0 ? TXG_NOWAIT : TXG_WAIT)
1736 ztest_tx_assign(dmu_tx_t *tx, uint64_t txg_how, const char *tag)
1742 * Attempt to assign tx to some transaction group.
1744 error = dmu_tx_assign(tx, txg_how);
1746 if (error == ERESTART) {
1747 ASSERT3U(txg_how, ==, TXG_NOWAIT);
1750 ASSERT3U(error, ==, ENOSPC);
1751 ztest_record_enospc(tag);
1756 txg = dmu_tx_get_txg(tx);
1757 ASSERT3U(txg, !=, 0);
1762 ztest_bt_generate(ztest_block_tag_t *bt, objset_t *os, uint64_t object,
1763 uint64_t dnodesize, uint64_t offset, uint64_t gen, uint64_t txg,
1766 bt->bt_magic = BT_MAGIC;
1767 bt->bt_objset = dmu_objset_id(os);
1768 bt->bt_object = object;
1769 bt->bt_dnodesize = dnodesize;
1770 bt->bt_offset = offset;
1773 bt->bt_crtxg = crtxg;
1777 ztest_bt_verify(ztest_block_tag_t *bt, objset_t *os, uint64_t object,
1778 uint64_t dnodesize, uint64_t offset, uint64_t gen, uint64_t txg,
1781 ASSERT3U(bt->bt_magic, ==, BT_MAGIC);
1782 ASSERT3U(bt->bt_objset, ==, dmu_objset_id(os));
1783 ASSERT3U(bt->bt_object, ==, object);
1784 ASSERT3U(bt->bt_dnodesize, ==, dnodesize);
1785 ASSERT3U(bt->bt_offset, ==, offset);
1786 ASSERT3U(bt->bt_gen, <=, gen);
1787 ASSERT3U(bt->bt_txg, <=, txg);
1788 ASSERT3U(bt->bt_crtxg, ==, crtxg);
1791 static ztest_block_tag_t *
1792 ztest_bt_bonus(dmu_buf_t *db)
1794 dmu_object_info_t doi;
1795 ztest_block_tag_t *bt;
1797 dmu_object_info_from_db(db, &doi);
1798 ASSERT3U(doi.doi_bonus_size, <=, db->db_size);
1799 ASSERT3U(doi.doi_bonus_size, >=, sizeof (*bt));
1800 bt = (void *)((char *)db->db_data + doi.doi_bonus_size - sizeof (*bt));
1806 * Generate a token to fill up unused bonus buffer space. Try to make
1807 * it unique to the object, generation, and offset to verify that data
1808 * is not getting overwritten by data from other dnodes.
1810 #define ZTEST_BONUS_FILL_TOKEN(obj, ds, gen, offset) \
1811 (((ds) << 48) | ((gen) << 32) | ((obj) << 8) | (offset))
1814 * Fill up the unused bonus buffer region before the block tag with a
1815 * verifiable pattern. Filling the whole bonus area with non-zero data
1816 * helps ensure that all dnode traversal code properly skips the
1817 * interior regions of large dnodes.
1820 ztest_fill_unused_bonus(dmu_buf_t *db, void *end, uint64_t obj,
1821 objset_t *os, uint64_t gen)
1825 ASSERT(IS_P2ALIGNED((char *)end - (char *)db->db_data, 8));
1827 for (bonusp = db->db_data; bonusp < (uint64_t *)end; bonusp++) {
1828 uint64_t token = ZTEST_BONUS_FILL_TOKEN(obj, dmu_objset_id(os),
1829 gen, bonusp - (uint64_t *)db->db_data);
1835 * Verify that the unused area of a bonus buffer is filled with the
1839 ztest_verify_unused_bonus(dmu_buf_t *db, void *end, uint64_t obj,
1840 objset_t *os, uint64_t gen)
1844 for (bonusp = db->db_data; bonusp < (uint64_t *)end; bonusp++) {
1845 uint64_t token = ZTEST_BONUS_FILL_TOKEN(obj, dmu_objset_id(os),
1846 gen, bonusp - (uint64_t *)db->db_data);
1847 VERIFY3U(*bonusp, ==, token);
1855 #define lrz_type lr_mode
1856 #define lrz_blocksize lr_uid
1857 #define lrz_ibshift lr_gid
1858 #define lrz_bonustype lr_rdev
1859 #define lrz_dnodesize lr_crtime[1]
1862 ztest_log_create(ztest_ds_t *zd, dmu_tx_t *tx, lr_create_t *lr)
1864 char *name = (void *)(lr + 1); /* name follows lr */
1865 size_t namesize = strlen(name) + 1;
1868 if (zil_replaying(zd->zd_zilog, tx))
1871 itx = zil_itx_create(TX_CREATE, sizeof (*lr) + namesize);
1872 memcpy(&itx->itx_lr + 1, &lr->lr_common + 1,
1873 sizeof (*lr) + namesize - sizeof (lr_t));
1875 zil_itx_assign(zd->zd_zilog, itx, tx);
1879 ztest_log_remove(ztest_ds_t *zd, dmu_tx_t *tx, lr_remove_t *lr, uint64_t object)
1881 char *name = (void *)(lr + 1); /* name follows lr */
1882 size_t namesize = strlen(name) + 1;
1885 if (zil_replaying(zd->zd_zilog, tx))
1888 itx = zil_itx_create(TX_REMOVE, sizeof (*lr) + namesize);
1889 memcpy(&itx->itx_lr + 1, &lr->lr_common + 1,
1890 sizeof (*lr) + namesize - sizeof (lr_t));
1892 itx->itx_oid = object;
1893 zil_itx_assign(zd->zd_zilog, itx, tx);
1897 ztest_log_write(ztest_ds_t *zd, dmu_tx_t *tx, lr_write_t *lr)
1900 itx_wr_state_t write_state = ztest_random(WR_NUM_STATES);
1902 if (zil_replaying(zd->zd_zilog, tx))
1905 if (lr->lr_length > zil_max_log_data(zd->zd_zilog, sizeof (lr_write_t)))
1906 write_state = WR_INDIRECT;
1908 itx = zil_itx_create(TX_WRITE,
1909 sizeof (*lr) + (write_state == WR_COPIED ? lr->lr_length : 0));
1911 if (write_state == WR_COPIED &&
1912 dmu_read(zd->zd_os, lr->lr_foid, lr->lr_offset, lr->lr_length,
1913 ((lr_write_t *)&itx->itx_lr) + 1, DMU_READ_NO_PREFETCH) != 0) {
1914 zil_itx_destroy(itx);
1915 itx = zil_itx_create(TX_WRITE, sizeof (*lr));
1916 write_state = WR_NEED_COPY;
1918 itx->itx_private = zd;
1919 itx->itx_wr_state = write_state;
1920 itx->itx_sync = (ztest_random(8) == 0);
1922 memcpy(&itx->itx_lr + 1, &lr->lr_common + 1,
1923 sizeof (*lr) - sizeof (lr_t));
1925 zil_itx_assign(zd->zd_zilog, itx, tx);
1929 ztest_log_truncate(ztest_ds_t *zd, dmu_tx_t *tx, lr_truncate_t *lr)
1933 if (zil_replaying(zd->zd_zilog, tx))
1936 itx = zil_itx_create(TX_TRUNCATE, sizeof (*lr));
1937 memcpy(&itx->itx_lr + 1, &lr->lr_common + 1,
1938 sizeof (*lr) - sizeof (lr_t));
1940 itx->itx_sync = B_FALSE;
1941 zil_itx_assign(zd->zd_zilog, itx, tx);
1945 ztest_log_setattr(ztest_ds_t *zd, dmu_tx_t *tx, lr_setattr_t *lr)
1949 if (zil_replaying(zd->zd_zilog, tx))
1952 itx = zil_itx_create(TX_SETATTR, sizeof (*lr));
1953 memcpy(&itx->itx_lr + 1, &lr->lr_common + 1,
1954 sizeof (*lr) - sizeof (lr_t));
1956 itx->itx_sync = B_FALSE;
1957 zil_itx_assign(zd->zd_zilog, itx, tx);
1964 ztest_replay_create(void *arg1, void *arg2, boolean_t byteswap)
1966 ztest_ds_t *zd = arg1;
1967 lr_create_t *lr = arg2;
1968 char *name = (void *)(lr + 1); /* name follows lr */
1969 objset_t *os = zd->zd_os;
1970 ztest_block_tag_t *bbt;
1978 byteswap_uint64_array(lr, sizeof (*lr));
1980 ASSERT3U(lr->lr_doid, ==, ZTEST_DIROBJ);
1981 ASSERT3S(name[0], !=, '\0');
1983 tx = dmu_tx_create(os);
1985 dmu_tx_hold_zap(tx, lr->lr_doid, B_TRUE, name);
1987 if (lr->lrz_type == DMU_OT_ZAP_OTHER) {
1988 dmu_tx_hold_zap(tx, DMU_NEW_OBJECT, B_TRUE, NULL);
1990 dmu_tx_hold_bonus(tx, DMU_NEW_OBJECT);
1993 txg = ztest_tx_assign(tx, TXG_WAIT, FTAG);
1997 ASSERT3U(dmu_objset_zil(os)->zl_replay, ==, !!lr->lr_foid);
1998 bonuslen = DN_BONUS_SIZE(lr->lrz_dnodesize);
2000 if (lr->lrz_type == DMU_OT_ZAP_OTHER) {
2001 if (lr->lr_foid == 0) {
2002 lr->lr_foid = zap_create_dnsize(os,
2003 lr->lrz_type, lr->lrz_bonustype,
2004 bonuslen, lr->lrz_dnodesize, tx);
2006 error = zap_create_claim_dnsize(os, lr->lr_foid,
2007 lr->lrz_type, lr->lrz_bonustype,
2008 bonuslen, lr->lrz_dnodesize, tx);
2011 if (lr->lr_foid == 0) {
2012 lr->lr_foid = dmu_object_alloc_dnsize(os,
2013 lr->lrz_type, 0, lr->lrz_bonustype,
2014 bonuslen, lr->lrz_dnodesize, tx);
2016 error = dmu_object_claim_dnsize(os, lr->lr_foid,
2017 lr->lrz_type, 0, lr->lrz_bonustype,
2018 bonuslen, lr->lrz_dnodesize, tx);
2023 ASSERT3U(error, ==, EEXIST);
2024 ASSERT(zd->zd_zilog->zl_replay);
2029 ASSERT3U(lr->lr_foid, !=, 0);
2031 if (lr->lrz_type != DMU_OT_ZAP_OTHER)
2032 VERIFY0(dmu_object_set_blocksize(os, lr->lr_foid,
2033 lr->lrz_blocksize, lr->lrz_ibshift, tx));
2035 VERIFY0(dmu_bonus_hold(os, lr->lr_foid, FTAG, &db));
2036 bbt = ztest_bt_bonus(db);
2037 dmu_buf_will_dirty(db, tx);
2038 ztest_bt_generate(bbt, os, lr->lr_foid, lr->lrz_dnodesize, -1ULL,
2039 lr->lr_gen, txg, txg);
2040 ztest_fill_unused_bonus(db, bbt, lr->lr_foid, os, lr->lr_gen);
2041 dmu_buf_rele(db, FTAG);
2043 VERIFY0(zap_add(os, lr->lr_doid, name, sizeof (uint64_t), 1,
2046 (void) ztest_log_create(zd, tx, lr);
2054 ztest_replay_remove(void *arg1, void *arg2, boolean_t byteswap)
2056 ztest_ds_t *zd = arg1;
2057 lr_remove_t *lr = arg2;
2058 char *name = (void *)(lr + 1); /* name follows lr */
2059 objset_t *os = zd->zd_os;
2060 dmu_object_info_t doi;
2062 uint64_t object, txg;
2065 byteswap_uint64_array(lr, sizeof (*lr));
2067 ASSERT3U(lr->lr_doid, ==, ZTEST_DIROBJ);
2068 ASSERT3S(name[0], !=, '\0');
2071 zap_lookup(os, lr->lr_doid, name, sizeof (object), 1, &object));
2072 ASSERT3U(object, !=, 0);
2074 ztest_object_lock(zd, object, RL_WRITER);
2076 VERIFY0(dmu_object_info(os, object, &doi));
2078 tx = dmu_tx_create(os);
2080 dmu_tx_hold_zap(tx, lr->lr_doid, B_FALSE, name);
2081 dmu_tx_hold_free(tx, object, 0, DMU_OBJECT_END);
2083 txg = ztest_tx_assign(tx, TXG_WAIT, FTAG);
2085 ztest_object_unlock(zd, object);
2089 if (doi.doi_type == DMU_OT_ZAP_OTHER) {
2090 VERIFY0(zap_destroy(os, object, tx));
2092 VERIFY0(dmu_object_free(os, object, tx));
2095 VERIFY0(zap_remove(os, lr->lr_doid, name, tx));
2097 (void) ztest_log_remove(zd, tx, lr, object);
2101 ztest_object_unlock(zd, object);
2107 ztest_replay_write(void *arg1, void *arg2, boolean_t byteswap)
2109 ztest_ds_t *zd = arg1;
2110 lr_write_t *lr = arg2;
2111 objset_t *os = zd->zd_os;
2112 void *data = lr + 1; /* data follows lr */
2113 uint64_t offset, length;
2114 ztest_block_tag_t *bt = data;
2115 ztest_block_tag_t *bbt;
2116 uint64_t gen, txg, lrtxg, crtxg;
2117 dmu_object_info_t doi;
2120 arc_buf_t *abuf = NULL;
2124 byteswap_uint64_array(lr, sizeof (*lr));
2126 offset = lr->lr_offset;
2127 length = lr->lr_length;
2129 /* If it's a dmu_sync() block, write the whole block */
2130 if (lr->lr_common.lrc_reclen == sizeof (lr_write_t)) {
2131 uint64_t blocksize = BP_GET_LSIZE(&lr->lr_blkptr);
2132 if (length < blocksize) {
2133 offset -= offset % blocksize;
2138 if (bt->bt_magic == BSWAP_64(BT_MAGIC))
2139 byteswap_uint64_array(bt, sizeof (*bt));
2141 if (bt->bt_magic != BT_MAGIC)
2144 ztest_object_lock(zd, lr->lr_foid, RL_READER);
2145 rl = ztest_range_lock(zd, lr->lr_foid, offset, length, RL_WRITER);
2147 VERIFY0(dmu_bonus_hold(os, lr->lr_foid, FTAG, &db));
2149 dmu_object_info_from_db(db, &doi);
2151 bbt = ztest_bt_bonus(db);
2152 ASSERT3U(bbt->bt_magic, ==, BT_MAGIC);
2154 crtxg = bbt->bt_crtxg;
2155 lrtxg = lr->lr_common.lrc_txg;
2157 tx = dmu_tx_create(os);
2159 dmu_tx_hold_write(tx, lr->lr_foid, offset, length);
2161 if (ztest_random(8) == 0 && length == doi.doi_data_block_size &&
2162 P2PHASE(offset, length) == 0)
2163 abuf = dmu_request_arcbuf(db, length);
2165 txg = ztest_tx_assign(tx, TXG_WAIT, FTAG);
2168 dmu_return_arcbuf(abuf);
2169 dmu_buf_rele(db, FTAG);
2170 ztest_range_unlock(rl);
2171 ztest_object_unlock(zd, lr->lr_foid);
2177 * Usually, verify the old data before writing new data --
2178 * but not always, because we also want to verify correct
2179 * behavior when the data was not recently read into cache.
2181 ASSERT(doi.doi_data_block_size);
2182 ASSERT0(offset % doi.doi_data_block_size);
2183 if (ztest_random(4) != 0) {
2184 int prefetch = ztest_random(2) ?
2185 DMU_READ_PREFETCH : DMU_READ_NO_PREFETCH;
2186 ztest_block_tag_t rbt;
2188 VERIFY(dmu_read(os, lr->lr_foid, offset,
2189 sizeof (rbt), &rbt, prefetch) == 0);
2190 if (rbt.bt_magic == BT_MAGIC) {
2191 ztest_bt_verify(&rbt, os, lr->lr_foid, 0,
2192 offset, gen, txg, crtxg);
2197 * Writes can appear to be newer than the bonus buffer because
2198 * the ztest_get_data() callback does a dmu_read() of the
2199 * open-context data, which may be different than the data
2200 * as it was when the write was generated.
2202 if (zd->zd_zilog->zl_replay) {
2203 ztest_bt_verify(bt, os, lr->lr_foid, 0, offset,
2204 MAX(gen, bt->bt_gen), MAX(txg, lrtxg),
2209 * Set the bt's gen/txg to the bonus buffer's gen/txg
2210 * so that all of the usual ASSERTs will work.
2212 ztest_bt_generate(bt, os, lr->lr_foid, 0, offset, gen, txg,
2217 dmu_write(os, lr->lr_foid, offset, length, data, tx);
2219 memcpy(abuf->b_data, data, length);
2220 VERIFY0(dmu_assign_arcbuf_by_dbuf(db, offset, abuf, tx));
2223 (void) ztest_log_write(zd, tx, lr);
2225 dmu_buf_rele(db, FTAG);
2229 ztest_range_unlock(rl);
2230 ztest_object_unlock(zd, lr->lr_foid);
2236 ztest_replay_truncate(void *arg1, void *arg2, boolean_t byteswap)
2238 ztest_ds_t *zd = arg1;
2239 lr_truncate_t *lr = arg2;
2240 objset_t *os = zd->zd_os;
2246 byteswap_uint64_array(lr, sizeof (*lr));
2248 ztest_object_lock(zd, lr->lr_foid, RL_READER);
2249 rl = ztest_range_lock(zd, lr->lr_foid, lr->lr_offset, lr->lr_length,
2252 tx = dmu_tx_create(os);
2254 dmu_tx_hold_free(tx, lr->lr_foid, lr->lr_offset, lr->lr_length);
2256 txg = ztest_tx_assign(tx, TXG_WAIT, FTAG);
2258 ztest_range_unlock(rl);
2259 ztest_object_unlock(zd, lr->lr_foid);
2263 VERIFY0(dmu_free_range(os, lr->lr_foid, lr->lr_offset,
2264 lr->lr_length, tx));
2266 (void) ztest_log_truncate(zd, tx, lr);
2270 ztest_range_unlock(rl);
2271 ztest_object_unlock(zd, lr->lr_foid);
2277 ztest_replay_setattr(void *arg1, void *arg2, boolean_t byteswap)
2279 ztest_ds_t *zd = arg1;
2280 lr_setattr_t *lr = arg2;
2281 objset_t *os = zd->zd_os;
2284 ztest_block_tag_t *bbt;
2285 uint64_t txg, lrtxg, crtxg, dnodesize;
2288 byteswap_uint64_array(lr, sizeof (*lr));
2290 ztest_object_lock(zd, lr->lr_foid, RL_WRITER);
2292 VERIFY0(dmu_bonus_hold(os, lr->lr_foid, FTAG, &db));
2294 tx = dmu_tx_create(os);
2295 dmu_tx_hold_bonus(tx, lr->lr_foid);
2297 txg = ztest_tx_assign(tx, TXG_WAIT, FTAG);
2299 dmu_buf_rele(db, FTAG);
2300 ztest_object_unlock(zd, lr->lr_foid);
2304 bbt = ztest_bt_bonus(db);
2305 ASSERT3U(bbt->bt_magic, ==, BT_MAGIC);
2306 crtxg = bbt->bt_crtxg;
2307 lrtxg = lr->lr_common.lrc_txg;
2308 dnodesize = bbt->bt_dnodesize;
2310 if (zd->zd_zilog->zl_replay) {
2311 ASSERT3U(lr->lr_size, !=, 0);
2312 ASSERT3U(lr->lr_mode, !=, 0);
2313 ASSERT3U(lrtxg, !=, 0);
2316 * Randomly change the size and increment the generation.
2318 lr->lr_size = (ztest_random(db->db_size / sizeof (*bbt)) + 1) *
2320 lr->lr_mode = bbt->bt_gen + 1;
2325 * Verify that the current bonus buffer is not newer than our txg.
2327 ztest_bt_verify(bbt, os, lr->lr_foid, dnodesize, -1ULL, lr->lr_mode,
2328 MAX(txg, lrtxg), crtxg);
2330 dmu_buf_will_dirty(db, tx);
2332 ASSERT3U(lr->lr_size, >=, sizeof (*bbt));
2333 ASSERT3U(lr->lr_size, <=, db->db_size);
2334 VERIFY0(dmu_set_bonus(db, lr->lr_size, tx));
2335 bbt = ztest_bt_bonus(db);
2337 ztest_bt_generate(bbt, os, lr->lr_foid, dnodesize, -1ULL, lr->lr_mode,
2339 ztest_fill_unused_bonus(db, bbt, lr->lr_foid, os, bbt->bt_gen);
2340 dmu_buf_rele(db, FTAG);
2342 (void) ztest_log_setattr(zd, tx, lr);
2346 ztest_object_unlock(zd, lr->lr_foid);
2351 static zil_replay_func_t *ztest_replay_vector[TX_MAX_TYPE] = {
2352 NULL, /* 0 no such transaction type */
2353 ztest_replay_create, /* TX_CREATE */
2354 NULL, /* TX_MKDIR */
2355 NULL, /* TX_MKXATTR */
2356 NULL, /* TX_SYMLINK */
2357 ztest_replay_remove, /* TX_REMOVE */
2358 NULL, /* TX_RMDIR */
2360 NULL, /* TX_RENAME */
2361 ztest_replay_write, /* TX_WRITE */
2362 ztest_replay_truncate, /* TX_TRUNCATE */
2363 ztest_replay_setattr, /* TX_SETATTR */
2365 NULL, /* TX_CREATE_ACL */
2366 NULL, /* TX_CREATE_ATTR */
2367 NULL, /* TX_CREATE_ACL_ATTR */
2368 NULL, /* TX_MKDIR_ACL */
2369 NULL, /* TX_MKDIR_ATTR */
2370 NULL, /* TX_MKDIR_ACL_ATTR */
2371 NULL, /* TX_WRITE2 */
2372 NULL, /* TX_SETSAXATTR */
2373 NULL, /* TX_RENAME_EXCHANGE */
2374 NULL, /* TX_RENAME_WHITEOUT */
2378 * ZIL get_data callbacks
2382 ztest_get_done(zgd_t *zgd, int error)
2385 ztest_ds_t *zd = zgd->zgd_private;
2386 uint64_t object = ((rl_t *)zgd->zgd_lr)->rl_object;
2389 dmu_buf_rele(zgd->zgd_db, zgd);
2391 ztest_range_unlock((rl_t *)zgd->zgd_lr);
2392 ztest_object_unlock(zd, object);
2394 umem_free(zgd, sizeof (*zgd));
2398 ztest_get_data(void *arg, uint64_t arg2, lr_write_t *lr, char *buf,
2399 struct lwb *lwb, zio_t *zio)
2402 ztest_ds_t *zd = arg;
2403 objset_t *os = zd->zd_os;
2404 uint64_t object = lr->lr_foid;
2405 uint64_t offset = lr->lr_offset;
2406 uint64_t size = lr->lr_length;
2407 uint64_t txg = lr->lr_common.lrc_txg;
2409 dmu_object_info_t doi;
2414 ASSERT3P(lwb, !=, NULL);
2415 ASSERT3P(zio, !=, NULL);
2416 ASSERT3U(size, !=, 0);
2418 ztest_object_lock(zd, object, RL_READER);
2419 error = dmu_bonus_hold(os, object, FTAG, &db);
2421 ztest_object_unlock(zd, object);
2425 crtxg = ztest_bt_bonus(db)->bt_crtxg;
2427 if (crtxg == 0 || crtxg > txg) {
2428 dmu_buf_rele(db, FTAG);
2429 ztest_object_unlock(zd, object);
2433 dmu_object_info_from_db(db, &doi);
2434 dmu_buf_rele(db, FTAG);
2437 zgd = umem_zalloc(sizeof (*zgd), UMEM_NOFAIL);
2439 zgd->zgd_private = zd;
2441 if (buf != NULL) { /* immediate write */
2442 zgd->zgd_lr = (struct zfs_locked_range *)ztest_range_lock(zd,
2443 object, offset, size, RL_READER);
2445 error = dmu_read(os, object, offset, size, buf,
2446 DMU_READ_NO_PREFETCH);
2449 size = doi.doi_data_block_size;
2451 offset = P2ALIGN(offset, size);
2453 ASSERT3U(offset, <, size);
2457 zgd->zgd_lr = (struct zfs_locked_range *)ztest_range_lock(zd,
2458 object, offset, size, RL_READER);
2460 error = dmu_buf_hold(os, object, offset, zgd, &db,
2461 DMU_READ_NO_PREFETCH);
2464 blkptr_t *bp = &lr->lr_blkptr;
2469 ASSERT3U(db->db_offset, ==, offset);
2470 ASSERT3U(db->db_size, ==, size);
2472 error = dmu_sync(zio, lr->lr_common.lrc_txg,
2473 ztest_get_done, zgd);
2480 ztest_get_done(zgd, error);
2486 ztest_lr_alloc(size_t lrsize, char *name)
2489 size_t namesize = name ? strlen(name) + 1 : 0;
2491 lr = umem_zalloc(lrsize + namesize, UMEM_NOFAIL);
2494 memcpy(lr + lrsize, name, namesize);
2500 ztest_lr_free(void *lr, size_t lrsize, char *name)
2502 size_t namesize = name ? strlen(name) + 1 : 0;
2504 umem_free(lr, lrsize + namesize);
2508 * Lookup a bunch of objects. Returns the number of objects not found.
2511 ztest_lookup(ztest_ds_t *zd, ztest_od_t *od, int count)
2517 ASSERT(MUTEX_HELD(&zd->zd_dirobj_lock));
2519 for (i = 0; i < count; i++, od++) {
2521 error = zap_lookup(zd->zd_os, od->od_dir, od->od_name,
2522 sizeof (uint64_t), 1, &od->od_object);
2524 ASSERT3S(error, ==, ENOENT);
2525 ASSERT0(od->od_object);
2529 ztest_block_tag_t *bbt;
2530 dmu_object_info_t doi;
2532 ASSERT3U(od->od_object, !=, 0);
2533 ASSERT0(missing); /* there should be no gaps */
2535 ztest_object_lock(zd, od->od_object, RL_READER);
2536 VERIFY0(dmu_bonus_hold(zd->zd_os, od->od_object,
2538 dmu_object_info_from_db(db, &doi);
2539 bbt = ztest_bt_bonus(db);
2540 ASSERT3U(bbt->bt_magic, ==, BT_MAGIC);
2541 od->od_type = doi.doi_type;
2542 od->od_blocksize = doi.doi_data_block_size;
2543 od->od_gen = bbt->bt_gen;
2544 dmu_buf_rele(db, FTAG);
2545 ztest_object_unlock(zd, od->od_object);
2553 ztest_create(ztest_ds_t *zd, ztest_od_t *od, int count)
2558 ASSERT(MUTEX_HELD(&zd->zd_dirobj_lock));
2560 for (i = 0; i < count; i++, od++) {
2567 lr_create_t *lr = ztest_lr_alloc(sizeof (*lr), od->od_name);
2569 lr->lr_doid = od->od_dir;
2570 lr->lr_foid = 0; /* 0 to allocate, > 0 to claim */
2571 lr->lrz_type = od->od_crtype;
2572 lr->lrz_blocksize = od->od_crblocksize;
2573 lr->lrz_ibshift = ztest_random_ibshift();
2574 lr->lrz_bonustype = DMU_OT_UINT64_OTHER;
2575 lr->lrz_dnodesize = od->od_crdnodesize;
2576 lr->lr_gen = od->od_crgen;
2577 lr->lr_crtime[0] = time(NULL);
2579 if (ztest_replay_create(zd, lr, B_FALSE) != 0) {
2584 od->od_object = lr->lr_foid;
2585 od->od_type = od->od_crtype;
2586 od->od_blocksize = od->od_crblocksize;
2587 od->od_gen = od->od_crgen;
2588 ASSERT3U(od->od_object, !=, 0);
2591 ztest_lr_free(lr, sizeof (*lr), od->od_name);
2598 ztest_remove(ztest_ds_t *zd, ztest_od_t *od, int count)
2604 ASSERT(MUTEX_HELD(&zd->zd_dirobj_lock));
2608 for (i = count - 1; i >= 0; i--, od--) {
2615 * No object was found.
2617 if (od->od_object == 0)
2620 lr_remove_t *lr = ztest_lr_alloc(sizeof (*lr), od->od_name);
2622 lr->lr_doid = od->od_dir;
2624 if ((error = ztest_replay_remove(zd, lr, B_FALSE)) != 0) {
2625 ASSERT3U(error, ==, ENOSPC);
2630 ztest_lr_free(lr, sizeof (*lr), od->od_name);
2637 ztest_write(ztest_ds_t *zd, uint64_t object, uint64_t offset, uint64_t size,
2643 lr = ztest_lr_alloc(sizeof (*lr) + size, NULL);
2645 lr->lr_foid = object;
2646 lr->lr_offset = offset;
2647 lr->lr_length = size;
2649 BP_ZERO(&lr->lr_blkptr);
2651 memcpy(lr + 1, data, size);
2653 error = ztest_replay_write(zd, lr, B_FALSE);
2655 ztest_lr_free(lr, sizeof (*lr) + size, NULL);
2661 ztest_truncate(ztest_ds_t *zd, uint64_t object, uint64_t offset, uint64_t size)
2666 lr = ztest_lr_alloc(sizeof (*lr), NULL);
2668 lr->lr_foid = object;
2669 lr->lr_offset = offset;
2670 lr->lr_length = size;
2672 error = ztest_replay_truncate(zd, lr, B_FALSE);
2674 ztest_lr_free(lr, sizeof (*lr), NULL);
2680 ztest_setattr(ztest_ds_t *zd, uint64_t object)
2685 lr = ztest_lr_alloc(sizeof (*lr), NULL);
2687 lr->lr_foid = object;
2691 error = ztest_replay_setattr(zd, lr, B_FALSE);
2693 ztest_lr_free(lr, sizeof (*lr), NULL);
2699 ztest_prealloc(ztest_ds_t *zd, uint64_t object, uint64_t offset, uint64_t size)
2701 objset_t *os = zd->zd_os;
2706 txg_wait_synced(dmu_objset_pool(os), 0);
2708 ztest_object_lock(zd, object, RL_READER);
2709 rl = ztest_range_lock(zd, object, offset, size, RL_WRITER);
2711 tx = dmu_tx_create(os);
2713 dmu_tx_hold_write(tx, object, offset, size);
2715 txg = ztest_tx_assign(tx, TXG_WAIT, FTAG);
2718 dmu_prealloc(os, object, offset, size, tx);
2720 txg_wait_synced(dmu_objset_pool(os), txg);
2722 (void) dmu_free_long_range(os, object, offset, size);
2725 ztest_range_unlock(rl);
2726 ztest_object_unlock(zd, object);
2730 ztest_io(ztest_ds_t *zd, uint64_t object, uint64_t offset)
2733 ztest_block_tag_t wbt;
2734 dmu_object_info_t doi;
2735 enum ztest_io_type io_type;
2739 VERIFY0(dmu_object_info(zd->zd_os, object, &doi));
2740 blocksize = doi.doi_data_block_size;
2741 data = umem_alloc(blocksize, UMEM_NOFAIL);
2744 * Pick an i/o type at random, biased toward writing block tags.
2746 io_type = ztest_random(ZTEST_IO_TYPES);
2747 if (ztest_random(2) == 0)
2748 io_type = ZTEST_IO_WRITE_TAG;
2750 (void) pthread_rwlock_rdlock(&zd->zd_zilog_lock);
2754 case ZTEST_IO_WRITE_TAG:
2755 ztest_bt_generate(&wbt, zd->zd_os, object, doi.doi_dnodesize,
2757 (void) ztest_write(zd, object, offset, sizeof (wbt), &wbt);
2760 case ZTEST_IO_WRITE_PATTERN:
2761 (void) memset(data, 'a' + (object + offset) % 5, blocksize);
2762 if (ztest_random(2) == 0) {
2764 * Induce fletcher2 collisions to ensure that
2765 * zio_ddt_collision() detects and resolves them
2766 * when using fletcher2-verify for deduplication.
2768 ((uint64_t *)data)[0] ^= 1ULL << 63;
2769 ((uint64_t *)data)[4] ^= 1ULL << 63;
2771 (void) ztest_write(zd, object, offset, blocksize, data);
2774 case ZTEST_IO_WRITE_ZEROES:
2775 memset(data, 0, blocksize);
2776 (void) ztest_write(zd, object, offset, blocksize, data);
2779 case ZTEST_IO_TRUNCATE:
2780 (void) ztest_truncate(zd, object, offset, blocksize);
2783 case ZTEST_IO_SETATTR:
2784 (void) ztest_setattr(zd, object);
2789 case ZTEST_IO_REWRITE:
2790 (void) pthread_rwlock_rdlock(&ztest_name_lock);
2791 err = ztest_dsl_prop_set_uint64(zd->zd_name,
2792 ZFS_PROP_CHECKSUM, spa_dedup_checksum(ztest_spa),
2794 ASSERT(err == 0 || err == ENOSPC);
2795 err = ztest_dsl_prop_set_uint64(zd->zd_name,
2796 ZFS_PROP_COMPRESSION,
2797 ztest_random_dsl_prop(ZFS_PROP_COMPRESSION),
2799 ASSERT(err == 0 || err == ENOSPC);
2800 (void) pthread_rwlock_unlock(&ztest_name_lock);
2802 VERIFY0(dmu_read(zd->zd_os, object, offset, blocksize, data,
2803 DMU_READ_NO_PREFETCH));
2805 (void) ztest_write(zd, object, offset, blocksize, data);
2809 (void) pthread_rwlock_unlock(&zd->zd_zilog_lock);
2811 umem_free(data, blocksize);
2815 * Initialize an object description template.
2818 ztest_od_init(ztest_od_t *od, uint64_t id, const char *tag, uint64_t index,
2819 dmu_object_type_t type, uint64_t blocksize, uint64_t dnodesize,
2822 od->od_dir = ZTEST_DIROBJ;
2825 od->od_crtype = type;
2826 od->od_crblocksize = blocksize ? blocksize : ztest_random_blocksize();
2827 od->od_crdnodesize = dnodesize ? dnodesize : ztest_random_dnodesize();
2830 od->od_type = DMU_OT_NONE;
2831 od->od_blocksize = 0;
2834 (void) snprintf(od->od_name, sizeof (od->od_name),
2835 "%s(%"PRId64")[%"PRIu64"]",
2840 * Lookup or create the objects for a test using the od template.
2841 * If the objects do not all exist, or if 'remove' is specified,
2842 * remove any existing objects and create new ones. Otherwise,
2843 * use the existing objects.
2846 ztest_object_init(ztest_ds_t *zd, ztest_od_t *od, size_t size, boolean_t remove)
2848 int count = size / sizeof (*od);
2851 mutex_enter(&zd->zd_dirobj_lock);
2852 if ((ztest_lookup(zd, od, count) != 0 || remove) &&
2853 (ztest_remove(zd, od, count) != 0 ||
2854 ztest_create(zd, od, count) != 0))
2857 mutex_exit(&zd->zd_dirobj_lock);
2863 ztest_zil_commit(ztest_ds_t *zd, uint64_t id)
2866 zilog_t *zilog = zd->zd_zilog;
2868 (void) pthread_rwlock_rdlock(&zd->zd_zilog_lock);
2870 zil_commit(zilog, ztest_random(ZTEST_OBJECTS));
2873 * Remember the committed values in zd, which is in parent/child
2874 * shared memory. If we die, the next iteration of ztest_run()
2875 * will verify that the log really does contain this record.
2877 mutex_enter(&zilog->zl_lock);
2878 ASSERT3P(zd->zd_shared, !=, NULL);
2879 ASSERT3U(zd->zd_shared->zd_seq, <=, zilog->zl_commit_lr_seq);
2880 zd->zd_shared->zd_seq = zilog->zl_commit_lr_seq;
2881 mutex_exit(&zilog->zl_lock);
2883 (void) pthread_rwlock_unlock(&zd->zd_zilog_lock);
2887 * This function is designed to simulate the operations that occur during a
2888 * mount/unmount operation. We hold the dataset across these operations in an
2889 * attempt to expose any implicit assumptions about ZIL management.
2892 ztest_zil_remount(ztest_ds_t *zd, uint64_t id)
2895 objset_t *os = zd->zd_os;
2898 * We hold the ztest_vdev_lock so we don't cause problems with
2899 * other threads that wish to remove a log device, such as
2900 * ztest_device_removal().
2902 mutex_enter(&ztest_vdev_lock);
2905 * We grab the zd_dirobj_lock to ensure that no other thread is
2906 * updating the zil (i.e. adding in-memory log records) and the
2907 * zd_zilog_lock to block any I/O.
2909 mutex_enter(&zd->zd_dirobj_lock);
2910 (void) pthread_rwlock_wrlock(&zd->zd_zilog_lock);
2912 /* zfsvfs_teardown() */
2913 zil_close(zd->zd_zilog);
2915 /* zfsvfs_setup() */
2916 VERIFY3P(zil_open(os, ztest_get_data, NULL), ==, zd->zd_zilog);
2917 zil_replay(os, zd, ztest_replay_vector);
2919 (void) pthread_rwlock_unlock(&zd->zd_zilog_lock);
2920 mutex_exit(&zd->zd_dirobj_lock);
2921 mutex_exit(&ztest_vdev_lock);
2925 * Verify that we can't destroy an active pool, create an existing pool,
2926 * or create a pool with a bad vdev spec.
2929 ztest_spa_create_destroy(ztest_ds_t *zd, uint64_t id)
2931 (void) zd, (void) id;
2932 ztest_shared_opts_t *zo = &ztest_opts;
2936 if (zo->zo_mmp_test)
2940 * Attempt to create using a bad file.
2942 nvroot = make_vdev_root("/dev/bogus", NULL, NULL, 0, 0, NULL, 0, 0, 1);
2943 VERIFY3U(ENOENT, ==,
2944 spa_create("ztest_bad_file", nvroot, NULL, NULL, NULL));
2945 fnvlist_free(nvroot);
2948 * Attempt to create using a bad mirror.
2950 nvroot = make_vdev_root("/dev/bogus", NULL, NULL, 0, 0, NULL, 0, 2, 1);
2951 VERIFY3U(ENOENT, ==,
2952 spa_create("ztest_bad_mirror", nvroot, NULL, NULL, NULL));
2953 fnvlist_free(nvroot);
2956 * Attempt to create an existing pool. It shouldn't matter
2957 * what's in the nvroot; we should fail with EEXIST.
2959 (void) pthread_rwlock_rdlock(&ztest_name_lock);
2960 nvroot = make_vdev_root("/dev/bogus", NULL, NULL, 0, 0, NULL, 0, 0, 1);
2961 VERIFY3U(EEXIST, ==,
2962 spa_create(zo->zo_pool, nvroot, NULL, NULL, NULL));
2963 fnvlist_free(nvroot);
2966 * We open a reference to the spa and then we try to export it
2967 * expecting one of the following errors:
2970 * Because of the reference we just opened.
2972 * ZFS_ERR_EXPORT_IN_PROGRESS
2973 * For the case that there is another ztest thread doing
2974 * an export concurrently.
2976 VERIFY0(spa_open(zo->zo_pool, &spa, FTAG));
2977 int error = spa_destroy(zo->zo_pool);
2978 if (error != EBUSY && error != ZFS_ERR_EXPORT_IN_PROGRESS) {
2979 fatal(B_FALSE, "spa_destroy(%s) returned unexpected value %d",
2980 spa->spa_name, error);
2982 spa_close(spa, FTAG);
2984 (void) pthread_rwlock_unlock(&ztest_name_lock);
2988 * Start and then stop the MMP threads to ensure the startup and shutdown code
2989 * works properly. Actual protection and property-related code tested via ZTS.
2992 ztest_mmp_enable_disable(ztest_ds_t *zd, uint64_t id)
2994 (void) zd, (void) id;
2995 ztest_shared_opts_t *zo = &ztest_opts;
2996 spa_t *spa = ztest_spa;
2998 if (zo->zo_mmp_test)
3002 * Since enabling MMP involves setting a property, it could not be done
3003 * while the pool is suspended.
3005 if (spa_suspended(spa))
3008 spa_config_enter(spa, SCL_CONFIG, FTAG, RW_READER);
3009 mutex_enter(&spa->spa_props_lock);
3011 zfs_multihost_fail_intervals = 0;
3013 if (!spa_multihost(spa)) {
3014 spa->spa_multihost = B_TRUE;
3015 mmp_thread_start(spa);
3018 mutex_exit(&spa->spa_props_lock);
3019 spa_config_exit(spa, SCL_CONFIG, FTAG);
3021 txg_wait_synced(spa_get_dsl(spa), 0);
3022 mmp_signal_all_threads();
3023 txg_wait_synced(spa_get_dsl(spa), 0);
3025 spa_config_enter(spa, SCL_CONFIG, FTAG, RW_READER);
3026 mutex_enter(&spa->spa_props_lock);
3028 if (spa_multihost(spa)) {
3029 mmp_thread_stop(spa);
3030 spa->spa_multihost = B_FALSE;
3033 mutex_exit(&spa->spa_props_lock);
3034 spa_config_exit(spa, SCL_CONFIG, FTAG);
3038 ztest_spa_upgrade(ztest_ds_t *zd, uint64_t id)
3040 (void) zd, (void) id;
3042 uint64_t initial_version = SPA_VERSION_INITIAL;
3043 uint64_t version, newversion;
3044 nvlist_t *nvroot, *props;
3047 if (ztest_opts.zo_mmp_test)
3050 /* dRAID added after feature flags, skip upgrade test. */
3051 if (strcmp(ztest_opts.zo_raid_type, VDEV_TYPE_DRAID) == 0)
3054 mutex_enter(&ztest_vdev_lock);
3055 name = kmem_asprintf("%s_upgrade", ztest_opts.zo_pool);
3058 * Clean up from previous runs.
3060 (void) spa_destroy(name);
3062 nvroot = make_vdev_root(NULL, NULL, name, ztest_opts.zo_vdev_size, 0,
3063 NULL, ztest_opts.zo_raid_children, ztest_opts.zo_mirrors, 1);
3066 * If we're configuring a RAIDZ device then make sure that the
3067 * initial version is capable of supporting that feature.
3069 switch (ztest_opts.zo_raid_parity) {
3072 initial_version = SPA_VERSION_INITIAL;
3075 initial_version = SPA_VERSION_RAIDZ2;
3078 initial_version = SPA_VERSION_RAIDZ3;
3083 * Create a pool with a spa version that can be upgraded. Pick
3084 * a value between initial_version and SPA_VERSION_BEFORE_FEATURES.
3087 version = ztest_random_spa_version(initial_version);
3088 } while (version > SPA_VERSION_BEFORE_FEATURES);
3090 props = fnvlist_alloc();
3091 fnvlist_add_uint64(props,
3092 zpool_prop_to_name(ZPOOL_PROP_VERSION), version);
3093 VERIFY0(spa_create(name, nvroot, props, NULL, NULL));
3094 fnvlist_free(nvroot);
3095 fnvlist_free(props);
3097 VERIFY0(spa_open(name, &spa, FTAG));
3098 VERIFY3U(spa_version(spa), ==, version);
3099 newversion = ztest_random_spa_version(version + 1);
3101 if (ztest_opts.zo_verbose >= 4) {
3102 (void) printf("upgrading spa version from "
3103 "%"PRIu64" to %"PRIu64"\n",
3104 version, newversion);
3107 spa_upgrade(spa, newversion);
3108 VERIFY3U(spa_version(spa), >, version);
3109 VERIFY3U(spa_version(spa), ==, fnvlist_lookup_uint64(spa->spa_config,
3110 zpool_prop_to_name(ZPOOL_PROP_VERSION)));
3111 spa_close(spa, FTAG);
3114 mutex_exit(&ztest_vdev_lock);
3118 ztest_spa_checkpoint(spa_t *spa)
3120 ASSERT(MUTEX_HELD(&ztest_checkpoint_lock));
3122 int error = spa_checkpoint(spa->spa_name);
3126 case ZFS_ERR_DEVRM_IN_PROGRESS:
3127 case ZFS_ERR_DISCARDING_CHECKPOINT:
3128 case ZFS_ERR_CHECKPOINT_EXISTS:
3131 ztest_record_enospc(FTAG);
3134 fatal(B_FALSE, "spa_checkpoint(%s) = %d", spa->spa_name, error);
3139 ztest_spa_discard_checkpoint(spa_t *spa)
3141 ASSERT(MUTEX_HELD(&ztest_checkpoint_lock));
3143 int error = spa_checkpoint_discard(spa->spa_name);
3147 case ZFS_ERR_DISCARDING_CHECKPOINT:
3148 case ZFS_ERR_NO_CHECKPOINT:
3151 fatal(B_FALSE, "spa_discard_checkpoint(%s) = %d",
3152 spa->spa_name, error);
3158 ztest_spa_checkpoint_create_discard(ztest_ds_t *zd, uint64_t id)
3160 (void) zd, (void) id;
3161 spa_t *spa = ztest_spa;
3163 mutex_enter(&ztest_checkpoint_lock);
3164 if (ztest_random(2) == 0) {
3165 ztest_spa_checkpoint(spa);
3167 ztest_spa_discard_checkpoint(spa);
3169 mutex_exit(&ztest_checkpoint_lock);
3174 vdev_lookup_by_path(vdev_t *vd, const char *path)
3179 if (vd->vdev_path != NULL && strcmp(path, vd->vdev_path) == 0)
3182 for (c = 0; c < vd->vdev_children; c++)
3183 if ((mvd = vdev_lookup_by_path(vd->vdev_child[c], path)) !=
3191 spa_num_top_vdevs(spa_t *spa)
3193 vdev_t *rvd = spa->spa_root_vdev;
3194 ASSERT3U(spa_config_held(spa, SCL_VDEV, RW_READER), ==, SCL_VDEV);
3195 return (rvd->vdev_children);
3199 * Verify that vdev_add() works as expected.
3202 ztest_vdev_add_remove(ztest_ds_t *zd, uint64_t id)
3204 (void) zd, (void) id;
3205 ztest_shared_t *zs = ztest_shared;
3206 spa_t *spa = ztest_spa;
3212 if (ztest_opts.zo_mmp_test)
3215 mutex_enter(&ztest_vdev_lock);
3216 leaves = MAX(zs->zs_mirrors + zs->zs_splits, 1) *
3217 ztest_opts.zo_raid_children;
3219 spa_config_enter(spa, SCL_VDEV, FTAG, RW_READER);
3221 ztest_shared->zs_vdev_next_leaf = spa_num_top_vdevs(spa) * leaves;
3224 * If we have slogs then remove them 1/4 of the time.
3226 if (spa_has_slogs(spa) && ztest_random(4) == 0) {
3227 metaslab_group_t *mg;
3230 * find the first real slog in log allocation class
3232 mg = spa_log_class(spa)->mc_allocator[0].mca_rotor;
3233 while (!mg->mg_vd->vdev_islog)
3236 guid = mg->mg_vd->vdev_guid;
3238 spa_config_exit(spa, SCL_VDEV, FTAG);
3241 * We have to grab the zs_name_lock as writer to
3242 * prevent a race between removing a slog (dmu_objset_find)
3243 * and destroying a dataset. Removing the slog will
3244 * grab a reference on the dataset which may cause
3245 * dsl_destroy_head() to fail with EBUSY thus
3246 * leaving the dataset in an inconsistent state.
3248 pthread_rwlock_wrlock(&ztest_name_lock);
3249 error = spa_vdev_remove(spa, guid, B_FALSE);
3250 pthread_rwlock_unlock(&ztest_name_lock);
3254 case EEXIST: /* Generic zil_reset() error */
3255 case EBUSY: /* Replay required */
3256 case EACCES: /* Crypto key not loaded */
3257 case ZFS_ERR_CHECKPOINT_EXISTS:
3258 case ZFS_ERR_DISCARDING_CHECKPOINT:
3261 fatal(B_FALSE, "spa_vdev_remove() = %d", error);
3264 spa_config_exit(spa, SCL_VDEV, FTAG);
3267 * Make 1/4 of the devices be log devices
3269 nvroot = make_vdev_root(NULL, NULL, NULL,
3270 ztest_opts.zo_vdev_size, 0, (ztest_random(4) == 0) ?
3271 "log" : NULL, ztest_opts.zo_raid_children, zs->zs_mirrors,
3274 error = spa_vdev_add(spa, nvroot);
3275 fnvlist_free(nvroot);
3281 ztest_record_enospc("spa_vdev_add");
3284 fatal(B_FALSE, "spa_vdev_add() = %d", error);
3288 mutex_exit(&ztest_vdev_lock);
3292 ztest_vdev_class_add(ztest_ds_t *zd, uint64_t id)
3294 (void) zd, (void) id;
3295 ztest_shared_t *zs = ztest_shared;
3296 spa_t *spa = ztest_spa;
3299 const char *class = (ztest_random(2) == 0) ?
3300 VDEV_ALLOC_BIAS_SPECIAL : VDEV_ALLOC_BIAS_DEDUP;
3304 * By default add a special vdev 50% of the time
3306 if ((ztest_opts.zo_special_vdevs == ZTEST_VDEV_CLASS_OFF) ||
3307 (ztest_opts.zo_special_vdevs == ZTEST_VDEV_CLASS_RND &&
3308 ztest_random(2) == 0)) {
3312 mutex_enter(&ztest_vdev_lock);
3314 /* Only test with mirrors */
3315 if (zs->zs_mirrors < 2) {
3316 mutex_exit(&ztest_vdev_lock);
3320 /* requires feature@allocation_classes */
3321 if (!spa_feature_is_enabled(spa, SPA_FEATURE_ALLOCATION_CLASSES)) {
3322 mutex_exit(&ztest_vdev_lock);
3326 leaves = MAX(zs->zs_mirrors + zs->zs_splits, 1) *
3327 ztest_opts.zo_raid_children;
3329 spa_config_enter(spa, SCL_VDEV, FTAG, RW_READER);
3330 ztest_shared->zs_vdev_next_leaf = spa_num_top_vdevs(spa) * leaves;
3331 spa_config_exit(spa, SCL_VDEV, FTAG);
3333 nvroot = make_vdev_root(NULL, NULL, NULL, ztest_opts.zo_vdev_size, 0,
3334 class, ztest_opts.zo_raid_children, zs->zs_mirrors, 1);
3336 error = spa_vdev_add(spa, nvroot);
3337 fnvlist_free(nvroot);
3339 if (error == ENOSPC)
3340 ztest_record_enospc("spa_vdev_add");
3341 else if (error != 0)
3342 fatal(B_FALSE, "spa_vdev_add() = %d", error);
3345 * 50% of the time allow small blocks in the special class
3348 spa_special_class(spa)->mc_groups == 1 && ztest_random(2) == 0) {
3349 if (ztest_opts.zo_verbose >= 3)
3350 (void) printf("Enabling special VDEV small blocks\n");
3351 error = ztest_dsl_prop_set_uint64(zd->zd_name,
3352 ZFS_PROP_SPECIAL_SMALL_BLOCKS, 32768, B_FALSE);
3353 ASSERT(error == 0 || error == ENOSPC);
3356 mutex_exit(&ztest_vdev_lock);
3358 if (ztest_opts.zo_verbose >= 3) {
3359 metaslab_class_t *mc;
3361 if (strcmp(class, VDEV_ALLOC_BIAS_SPECIAL) == 0)
3362 mc = spa_special_class(spa);
3364 mc = spa_dedup_class(spa);
3365 (void) printf("Added a %s mirrored vdev (of %d)\n",
3366 class, (int)mc->mc_groups);
3371 * Verify that adding/removing aux devices (l2arc, hot spare) works as expected.
3374 ztest_vdev_aux_add_remove(ztest_ds_t *zd, uint64_t id)
3376 (void) zd, (void) id;
3377 ztest_shared_t *zs = ztest_shared;
3378 spa_t *spa = ztest_spa;
3379 vdev_t *rvd = spa->spa_root_vdev;
3380 spa_aux_vdev_t *sav;
3384 int error, ignore_err = 0;
3386 if (ztest_opts.zo_mmp_test)
3389 path = umem_alloc(MAXPATHLEN, UMEM_NOFAIL);
3391 if (ztest_random(2) == 0) {
3392 sav = &spa->spa_spares;
3393 aux = ZPOOL_CONFIG_SPARES;
3395 sav = &spa->spa_l2cache;
3396 aux = ZPOOL_CONFIG_L2CACHE;
3399 mutex_enter(&ztest_vdev_lock);
3401 spa_config_enter(spa, SCL_VDEV, FTAG, RW_READER);
3403 if (sav->sav_count != 0 && ztest_random(4) == 0) {
3405 * Pick a random device to remove.
3407 vdev_t *svd = sav->sav_vdevs[ztest_random(sav->sav_count)];
3409 /* dRAID spares cannot be removed; try anyways to see ENOTSUP */
3410 if (strstr(svd->vdev_path, VDEV_TYPE_DRAID) != NULL)
3411 ignore_err = ENOTSUP;
3413 guid = svd->vdev_guid;
3416 * Find an unused device we can add.
3418 zs->zs_vdev_aux = 0;
3421 (void) snprintf(path, MAXPATHLEN, ztest_aux_template,
3422 ztest_opts.zo_dir, ztest_opts.zo_pool, aux,
3424 for (c = 0; c < sav->sav_count; c++)
3425 if (strcmp(sav->sav_vdevs[c]->vdev_path,
3428 if (c == sav->sav_count &&
3429 vdev_lookup_by_path(rvd, path) == NULL)
3435 spa_config_exit(spa, SCL_VDEV, FTAG);
3441 nvlist_t *nvroot = make_vdev_root(NULL, aux, NULL,
3442 (ztest_opts.zo_vdev_size * 5) / 4, 0, NULL, 0, 0, 1);
3443 error = spa_vdev_add(spa, nvroot);
3449 fatal(B_FALSE, "spa_vdev_add(%p) = %d", nvroot, error);
3451 fnvlist_free(nvroot);
3454 * Remove an existing device. Sometimes, dirty its
3455 * vdev state first to make sure we handle removal
3456 * of devices that have pending state changes.
3458 if (ztest_random(2) == 0)
3459 (void) vdev_online(spa, guid, 0, NULL);
3461 error = spa_vdev_remove(spa, guid, B_FALSE);
3466 case ZFS_ERR_CHECKPOINT_EXISTS:
3467 case ZFS_ERR_DISCARDING_CHECKPOINT:
3470 if (error != ignore_err)
3472 "spa_vdev_remove(%"PRIu64") = %d",
3477 mutex_exit(&ztest_vdev_lock);
3479 umem_free(path, MAXPATHLEN);
3483 * split a pool if it has mirror tlvdevs
3486 ztest_split_pool(ztest_ds_t *zd, uint64_t id)
3488 (void) zd, (void) id;
3489 ztest_shared_t *zs = ztest_shared;
3490 spa_t *spa = ztest_spa;
3491 vdev_t *rvd = spa->spa_root_vdev;
3492 nvlist_t *tree, **child, *config, *split, **schild;
3493 uint_t c, children, schildren = 0, lastlogid = 0;
3496 if (ztest_opts.zo_mmp_test)
3499 mutex_enter(&ztest_vdev_lock);
3501 /* ensure we have a usable config; mirrors of raidz aren't supported */
3502 if (zs->zs_mirrors < 3 || ztest_opts.zo_raid_children > 1) {
3503 mutex_exit(&ztest_vdev_lock);
3507 /* clean up the old pool, if any */
3508 (void) spa_destroy("splitp");
3510 spa_config_enter(spa, SCL_VDEV, FTAG, RW_READER);
3512 /* generate a config from the existing config */
3513 mutex_enter(&spa->spa_props_lock);
3514 tree = fnvlist_lookup_nvlist(spa->spa_config, ZPOOL_CONFIG_VDEV_TREE);
3515 mutex_exit(&spa->spa_props_lock);
3517 VERIFY0(nvlist_lookup_nvlist_array(tree, ZPOOL_CONFIG_CHILDREN,
3518 &child, &children));
3520 schild = umem_alloc(rvd->vdev_children * sizeof (nvlist_t *),
3522 for (c = 0; c < children; c++) {
3523 vdev_t *tvd = rvd->vdev_child[c];
3527 if (tvd->vdev_islog || tvd->vdev_ops == &vdev_hole_ops) {
3528 schild[schildren] = fnvlist_alloc();
3529 fnvlist_add_string(schild[schildren],
3530 ZPOOL_CONFIG_TYPE, VDEV_TYPE_HOLE);
3531 fnvlist_add_uint64(schild[schildren],
3532 ZPOOL_CONFIG_IS_HOLE, 1);
3534 lastlogid = schildren;
3539 VERIFY0(nvlist_lookup_nvlist_array(child[c],
3540 ZPOOL_CONFIG_CHILDREN, &mchild, &mchildren));
3541 schild[schildren++] = fnvlist_dup(mchild[0]);
3544 /* OK, create a config that can be used to split */
3545 split = fnvlist_alloc();
3546 fnvlist_add_string(split, ZPOOL_CONFIG_TYPE, VDEV_TYPE_ROOT);
3547 fnvlist_add_nvlist_array(split, ZPOOL_CONFIG_CHILDREN,
3548 (const nvlist_t **)schild, lastlogid != 0 ? lastlogid : schildren);
3550 config = fnvlist_alloc();
3551 fnvlist_add_nvlist(config, ZPOOL_CONFIG_VDEV_TREE, split);
3553 for (c = 0; c < schildren; c++)
3554 fnvlist_free(schild[c]);
3555 umem_free(schild, rvd->vdev_children * sizeof (nvlist_t *));
3556 fnvlist_free(split);
3558 spa_config_exit(spa, SCL_VDEV, FTAG);
3560 (void) pthread_rwlock_wrlock(&ztest_name_lock);
3561 error = spa_vdev_split_mirror(spa, "splitp", config, NULL, B_FALSE);
3562 (void) pthread_rwlock_unlock(&ztest_name_lock);
3564 fnvlist_free(config);
3567 (void) printf("successful split - results:\n");
3568 mutex_enter(&spa_namespace_lock);
3569 show_pool_stats(spa);
3570 show_pool_stats(spa_lookup("splitp"));
3571 mutex_exit(&spa_namespace_lock);
3575 mutex_exit(&ztest_vdev_lock);
3579 * Verify that we can attach and detach devices.
3582 ztest_vdev_attach_detach(ztest_ds_t *zd, uint64_t id)
3584 (void) zd, (void) id;
3585 ztest_shared_t *zs = ztest_shared;
3586 spa_t *spa = ztest_spa;
3587 spa_aux_vdev_t *sav = &spa->spa_spares;
3588 vdev_t *rvd = spa->spa_root_vdev;
3589 vdev_t *oldvd, *newvd, *pvd;
3593 uint64_t ashift = ztest_get_ashift();
3594 uint64_t oldguid, pguid;
3595 uint64_t oldsize, newsize;
3596 char *oldpath, *newpath;
3598 int oldvd_has_siblings = B_FALSE;
3599 int newvd_is_spare = B_FALSE;
3600 int newvd_is_dspare = B_FALSE;
3602 int oldvd_is_special;
3603 int error, expected_error;
3605 if (ztest_opts.zo_mmp_test)
3608 oldpath = umem_alloc(MAXPATHLEN, UMEM_NOFAIL);
3609 newpath = umem_alloc(MAXPATHLEN, UMEM_NOFAIL);
3611 mutex_enter(&ztest_vdev_lock);
3612 leaves = MAX(zs->zs_mirrors, 1) * ztest_opts.zo_raid_children;
3614 spa_config_enter(spa, SCL_ALL, FTAG, RW_WRITER);
3617 * If a vdev is in the process of being removed, its removal may
3618 * finish while we are in progress, leading to an unexpected error
3619 * value. Don't bother trying to attach while we are in the middle
3622 if (ztest_device_removal_active) {
3623 spa_config_exit(spa, SCL_ALL, FTAG);
3628 * Decide whether to do an attach or a replace.
3630 replacing = ztest_random(2);
3633 * Pick a random top-level vdev.
3635 top = ztest_random_vdev_top(spa, B_TRUE);
3638 * Pick a random leaf within it.
3640 leaf = ztest_random(leaves);
3645 oldvd = rvd->vdev_child[top];
3647 /* pick a child from the mirror */
3648 if (zs->zs_mirrors >= 1) {
3649 ASSERT3P(oldvd->vdev_ops, ==, &vdev_mirror_ops);
3650 ASSERT3U(oldvd->vdev_children, >=, zs->zs_mirrors);
3651 oldvd = oldvd->vdev_child[leaf / ztest_opts.zo_raid_children];
3654 /* pick a child out of the raidz group */
3655 if (ztest_opts.zo_raid_children > 1) {
3656 if (strcmp(oldvd->vdev_ops->vdev_op_type, "raidz") == 0)
3657 ASSERT3P(oldvd->vdev_ops, ==, &vdev_raidz_ops);
3659 ASSERT3P(oldvd->vdev_ops, ==, &vdev_draid_ops);
3660 ASSERT3U(oldvd->vdev_children, ==, ztest_opts.zo_raid_children);
3661 oldvd = oldvd->vdev_child[leaf % ztest_opts.zo_raid_children];
3665 * If we're already doing an attach or replace, oldvd may be a
3666 * mirror vdev -- in which case, pick a random child.
3668 while (oldvd->vdev_children != 0) {
3669 oldvd_has_siblings = B_TRUE;
3670 ASSERT3U(oldvd->vdev_children, >=, 2);
3671 oldvd = oldvd->vdev_child[ztest_random(oldvd->vdev_children)];
3674 oldguid = oldvd->vdev_guid;
3675 oldsize = vdev_get_min_asize(oldvd);
3676 oldvd_is_log = oldvd->vdev_top->vdev_islog;
3678 oldvd->vdev_top->vdev_alloc_bias == VDEV_BIAS_SPECIAL ||
3679 oldvd->vdev_top->vdev_alloc_bias == VDEV_BIAS_DEDUP;
3680 (void) strlcpy(oldpath, oldvd->vdev_path, MAXPATHLEN);
3681 pvd = oldvd->vdev_parent;
3682 pguid = pvd->vdev_guid;
3685 * If oldvd has siblings, then half of the time, detach it. Prior
3686 * to the detach the pool is scrubbed in order to prevent creating
3687 * unrepairable blocks as a result of the data corruption injection.
3689 if (oldvd_has_siblings && ztest_random(2) == 0) {
3690 spa_config_exit(spa, SCL_ALL, FTAG);
3692 error = ztest_scrub_impl(spa);
3696 error = spa_vdev_detach(spa, oldguid, pguid, B_FALSE);
3697 if (error != 0 && error != ENODEV && error != EBUSY &&
3698 error != ENOTSUP && error != ZFS_ERR_CHECKPOINT_EXISTS &&
3699 error != ZFS_ERR_DISCARDING_CHECKPOINT)
3700 fatal(B_FALSE, "detach (%s) returned %d",
3706 * For the new vdev, choose with equal probability between the two
3707 * standard paths (ending in either 'a' or 'b') or a random hot spare.
3709 if (sav->sav_count != 0 && ztest_random(3) == 0) {
3710 newvd = sav->sav_vdevs[ztest_random(sav->sav_count)];
3711 newvd_is_spare = B_TRUE;
3713 if (newvd->vdev_ops == &vdev_draid_spare_ops)
3714 newvd_is_dspare = B_TRUE;
3716 (void) strlcpy(newpath, newvd->vdev_path, MAXPATHLEN);
3718 (void) snprintf(newpath, MAXPATHLEN, ztest_dev_template,
3719 ztest_opts.zo_dir, ztest_opts.zo_pool,
3720 top * leaves + leaf);
3721 if (ztest_random(2) == 0)
3722 newpath[strlen(newpath) - 1] = 'b';
3723 newvd = vdev_lookup_by_path(rvd, newpath);
3728 * Reopen to ensure the vdev's asize field isn't stale.
3731 newsize = vdev_get_min_asize(newvd);
3734 * Make newsize a little bigger or smaller than oldsize.
3735 * If it's smaller, the attach should fail.
3736 * If it's larger, and we're doing a replace,
3737 * we should get dynamic LUN growth when we're done.
3739 newsize = 10 * oldsize / (9 + ztest_random(3));
3743 * If pvd is not a mirror or root, the attach should fail with ENOTSUP,
3744 * unless it's a replace; in that case any non-replacing parent is OK.
3746 * If newvd is already part of the pool, it should fail with EBUSY.
3748 * If newvd is too small, it should fail with EOVERFLOW.
3750 * If newvd is a distributed spare and it's being attached to a
3751 * dRAID which is not its parent it should fail with EINVAL.
3753 if (pvd->vdev_ops != &vdev_mirror_ops &&
3754 pvd->vdev_ops != &vdev_root_ops && (!replacing ||
3755 pvd->vdev_ops == &vdev_replacing_ops ||
3756 pvd->vdev_ops == &vdev_spare_ops))
3757 expected_error = ENOTSUP;
3758 else if (newvd_is_spare &&
3759 (!replacing || oldvd_is_log || oldvd_is_special))
3760 expected_error = ENOTSUP;
3761 else if (newvd == oldvd)
3762 expected_error = replacing ? 0 : EBUSY;
3763 else if (vdev_lookup_by_path(rvd, newpath) != NULL)
3764 expected_error = EBUSY;
3765 else if (!newvd_is_dspare && newsize < oldsize)
3766 expected_error = EOVERFLOW;
3767 else if (ashift > oldvd->vdev_top->vdev_ashift)
3768 expected_error = EDOM;
3769 else if (newvd_is_dspare && pvd != vdev_draid_spare_get_parent(newvd))
3770 expected_error = ENOTSUP;
3774 spa_config_exit(spa, SCL_ALL, FTAG);
3777 * Build the nvlist describing newpath.
3779 root = make_vdev_root(newpath, NULL, NULL, newvd == NULL ? newsize : 0,
3780 ashift, NULL, 0, 0, 1);
3783 * When supported select either a healing or sequential resilver.
3785 boolean_t rebuilding = B_FALSE;
3786 if (pvd->vdev_ops == &vdev_mirror_ops ||
3787 pvd->vdev_ops == &vdev_root_ops) {
3788 rebuilding = !!ztest_random(2);
3791 error = spa_vdev_attach(spa, oldguid, root, replacing, rebuilding);
3796 * If our parent was the replacing vdev, but the replace completed,
3797 * then instead of failing with ENOTSUP we may either succeed,
3798 * fail with ENODEV, or fail with EOVERFLOW.
3800 if (expected_error == ENOTSUP &&
3801 (error == 0 || error == ENODEV || error == EOVERFLOW))
3802 expected_error = error;
3805 * If someone grew the LUN, the replacement may be too small.
3807 if (error == EOVERFLOW || error == EBUSY)
3808 expected_error = error;
3810 if (error == ZFS_ERR_CHECKPOINT_EXISTS ||
3811 error == ZFS_ERR_DISCARDING_CHECKPOINT ||
3812 error == ZFS_ERR_RESILVER_IN_PROGRESS ||
3813 error == ZFS_ERR_REBUILD_IN_PROGRESS)
3814 expected_error = error;
3816 if (error != expected_error && expected_error != EBUSY) {
3817 fatal(B_FALSE, "attach (%s %"PRIu64", %s %"PRIu64", %d) "
3818 "returned %d, expected %d",
3819 oldpath, oldsize, newpath,
3820 newsize, replacing, error, expected_error);
3823 mutex_exit(&ztest_vdev_lock);
3825 umem_free(oldpath, MAXPATHLEN);
3826 umem_free(newpath, MAXPATHLEN);
3830 ztest_device_removal(ztest_ds_t *zd, uint64_t id)
3832 (void) zd, (void) id;
3833 spa_t *spa = ztest_spa;
3838 mutex_enter(&ztest_vdev_lock);
3840 if (ztest_device_removal_active) {
3841 mutex_exit(&ztest_vdev_lock);
3846 * Remove a random top-level vdev and wait for removal to finish.
3848 spa_config_enter(spa, SCL_VDEV, FTAG, RW_READER);
3849 vd = vdev_lookup_top(spa, ztest_random_vdev_top(spa, B_FALSE));
3850 guid = vd->vdev_guid;
3851 spa_config_exit(spa, SCL_VDEV, FTAG);
3853 error = spa_vdev_remove(spa, guid, B_FALSE);
3855 ztest_device_removal_active = B_TRUE;
3856 mutex_exit(&ztest_vdev_lock);
3859 * spa->spa_vdev_removal is created in a sync task that
3860 * is initiated via dsl_sync_task_nowait(). Since the
3861 * task may not run before spa_vdev_remove() returns, we
3862 * must wait at least 1 txg to ensure that the removal
3863 * struct has been created.
3865 txg_wait_synced(spa_get_dsl(spa), 0);
3867 while (spa->spa_removing_phys.sr_state == DSS_SCANNING)
3868 txg_wait_synced(spa_get_dsl(spa), 0);
3870 mutex_exit(&ztest_vdev_lock);
3875 * The pool needs to be scrubbed after completing device removal.
3876 * Failure to do so may result in checksum errors due to the
3877 * strategy employed by ztest_fault_inject() when selecting which
3878 * offset are redundant and can be damaged.
3880 error = spa_scan(spa, POOL_SCAN_SCRUB);
3882 while (dsl_scan_scrubbing(spa_get_dsl(spa)))
3883 txg_wait_synced(spa_get_dsl(spa), 0);
3886 mutex_enter(&ztest_vdev_lock);
3887 ztest_device_removal_active = B_FALSE;
3888 mutex_exit(&ztest_vdev_lock);
3892 * Callback function which expands the physical size of the vdev.
3895 grow_vdev(vdev_t *vd, void *arg)
3897 spa_t *spa __maybe_unused = vd->vdev_spa;
3898 size_t *newsize = arg;
3902 ASSERT3S(spa_config_held(spa, SCL_STATE, RW_READER), ==, SCL_STATE);
3903 ASSERT(vd->vdev_ops->vdev_op_leaf);
3905 if ((fd = open(vd->vdev_path, O_RDWR)) == -1)
3908 fsize = lseek(fd, 0, SEEK_END);
3909 VERIFY0(ftruncate(fd, *newsize));
3911 if (ztest_opts.zo_verbose >= 6) {
3912 (void) printf("%s grew from %lu to %lu bytes\n",
3913 vd->vdev_path, (ulong_t)fsize, (ulong_t)*newsize);
3920 * Callback function which expands a given vdev by calling vdev_online().
3923 online_vdev(vdev_t *vd, void *arg)
3926 spa_t *spa = vd->vdev_spa;
3927 vdev_t *tvd = vd->vdev_top;
3928 uint64_t guid = vd->vdev_guid;
3929 uint64_t generation = spa->spa_config_generation + 1;
3930 vdev_state_t newstate = VDEV_STATE_UNKNOWN;
3933 ASSERT3S(spa_config_held(spa, SCL_STATE, RW_READER), ==, SCL_STATE);
3934 ASSERT(vd->vdev_ops->vdev_op_leaf);
3936 /* Calling vdev_online will initialize the new metaslabs */
3937 spa_config_exit(spa, SCL_STATE, spa);
3938 error = vdev_online(spa, guid, ZFS_ONLINE_EXPAND, &newstate);
3939 spa_config_enter(spa, SCL_STATE, spa, RW_READER);
3942 * If vdev_online returned an error or the underlying vdev_open
3943 * failed then we abort the expand. The only way to know that
3944 * vdev_open fails is by checking the returned newstate.
3946 if (error || newstate != VDEV_STATE_HEALTHY) {
3947 if (ztest_opts.zo_verbose >= 5) {
3948 (void) printf("Unable to expand vdev, state %u, "
3949 "error %d\n", newstate, error);
3953 ASSERT3U(newstate, ==, VDEV_STATE_HEALTHY);
3956 * Since we dropped the lock we need to ensure that we're
3957 * still talking to the original vdev. It's possible this
3958 * vdev may have been detached/replaced while we were
3959 * trying to online it.
3961 if (generation != spa->spa_config_generation) {
3962 if (ztest_opts.zo_verbose >= 5) {
3963 (void) printf("vdev configuration has changed, "
3964 "guid %"PRIu64", state %"PRIu64", "
3965 "expected gen %"PRIu64", got gen %"PRIu64"\n",
3969 spa->spa_config_generation);
3977 * Traverse the vdev tree calling the supplied function.
3978 * We continue to walk the tree until we either have walked all
3979 * children or we receive a non-NULL return from the callback.
3980 * If a NULL callback is passed, then we just return back the first
3981 * leaf vdev we encounter.
3984 vdev_walk_tree(vdev_t *vd, vdev_t *(*func)(vdev_t *, void *), void *arg)
3988 if (vd->vdev_ops->vdev_op_leaf) {
3992 return (func(vd, arg));
3995 for (c = 0; c < vd->vdev_children; c++) {
3996 vdev_t *cvd = vd->vdev_child[c];
3997 if ((cvd = vdev_walk_tree(cvd, func, arg)) != NULL)
4004 * Verify that dynamic LUN growth works as expected.
4007 ztest_vdev_LUN_growth(ztest_ds_t *zd, uint64_t id)
4009 (void) zd, (void) id;
4010 spa_t *spa = ztest_spa;
4012 metaslab_class_t *mc;
4013 metaslab_group_t *mg;
4014 size_t psize, newsize;
4016 uint64_t old_class_space, new_class_space, old_ms_count, new_ms_count;
4018 mutex_enter(&ztest_checkpoint_lock);
4019 mutex_enter(&ztest_vdev_lock);
4020 spa_config_enter(spa, SCL_STATE, spa, RW_READER);
4023 * If there is a vdev removal in progress, it could complete while
4024 * we are running, in which case we would not be able to verify
4025 * that the metaslab_class space increased (because it decreases
4026 * when the device removal completes).
4028 if (ztest_device_removal_active) {
4029 spa_config_exit(spa, SCL_STATE, spa);
4030 mutex_exit(&ztest_vdev_lock);
4031 mutex_exit(&ztest_checkpoint_lock);
4035 top = ztest_random_vdev_top(spa, B_TRUE);
4037 tvd = spa->spa_root_vdev->vdev_child[top];
4040 old_ms_count = tvd->vdev_ms_count;
4041 old_class_space = metaslab_class_get_space(mc);
4044 * Determine the size of the first leaf vdev associated with
4045 * our top-level device.
4047 vd = vdev_walk_tree(tvd, NULL, NULL);
4048 ASSERT3P(vd, !=, NULL);
4049 ASSERT(vd->vdev_ops->vdev_op_leaf);
4051 psize = vd->vdev_psize;
4054 * We only try to expand the vdev if it's healthy, less than 4x its
4055 * original size, and it has a valid psize.
4057 if (tvd->vdev_state != VDEV_STATE_HEALTHY ||
4058 psize == 0 || psize >= 4 * ztest_opts.zo_vdev_size) {
4059 spa_config_exit(spa, SCL_STATE, spa);
4060 mutex_exit(&ztest_vdev_lock);
4061 mutex_exit(&ztest_checkpoint_lock);
4064 ASSERT3U(psize, >, 0);
4065 newsize = psize + MAX(psize / 8, SPA_MAXBLOCKSIZE);
4066 ASSERT3U(newsize, >, psize);
4068 if (ztest_opts.zo_verbose >= 6) {
4069 (void) printf("Expanding LUN %s from %lu to %lu\n",
4070 vd->vdev_path, (ulong_t)psize, (ulong_t)newsize);
4074 * Growing the vdev is a two step process:
4075 * 1). expand the physical size (i.e. relabel)
4076 * 2). online the vdev to create the new metaslabs
4078 if (vdev_walk_tree(tvd, grow_vdev, &newsize) != NULL ||
4079 vdev_walk_tree(tvd, online_vdev, NULL) != NULL ||
4080 tvd->vdev_state != VDEV_STATE_HEALTHY) {
4081 if (ztest_opts.zo_verbose >= 5) {
4082 (void) printf("Could not expand LUN because "
4083 "the vdev configuration changed.\n");
4085 spa_config_exit(spa, SCL_STATE, spa);
4086 mutex_exit(&ztest_vdev_lock);
4087 mutex_exit(&ztest_checkpoint_lock);
4091 spa_config_exit(spa, SCL_STATE, spa);
4094 * Expanding the LUN will update the config asynchronously,
4095 * thus we must wait for the async thread to complete any
4096 * pending tasks before proceeding.
4100 mutex_enter(&spa->spa_async_lock);
4101 done = (spa->spa_async_thread == NULL && !spa->spa_async_tasks);
4102 mutex_exit(&spa->spa_async_lock);
4105 txg_wait_synced(spa_get_dsl(spa), 0);
4106 (void) poll(NULL, 0, 100);
4109 spa_config_enter(spa, SCL_STATE, spa, RW_READER);
4111 tvd = spa->spa_root_vdev->vdev_child[top];
4112 new_ms_count = tvd->vdev_ms_count;
4113 new_class_space = metaslab_class_get_space(mc);
4115 if (tvd->vdev_mg != mg || mg->mg_class != mc) {
4116 if (ztest_opts.zo_verbose >= 5) {
4117 (void) printf("Could not verify LUN expansion due to "
4118 "intervening vdev offline or remove.\n");
4120 spa_config_exit(spa, SCL_STATE, spa);
4121 mutex_exit(&ztest_vdev_lock);
4122 mutex_exit(&ztest_checkpoint_lock);
4127 * Make sure we were able to grow the vdev.
4129 if (new_ms_count <= old_ms_count) {
4131 "LUN expansion failed: ms_count %"PRIu64" < %"PRIu64"\n",
4132 old_ms_count, new_ms_count);
4136 * Make sure we were able to grow the pool.
4138 if (new_class_space <= old_class_space) {
4140 "LUN expansion failed: class_space %"PRIu64" < %"PRIu64"\n",
4141 old_class_space, new_class_space);
4144 if (ztest_opts.zo_verbose >= 5) {
4145 char oldnumbuf[NN_NUMBUF_SZ], newnumbuf[NN_NUMBUF_SZ];
4147 nicenum(old_class_space, oldnumbuf, sizeof (oldnumbuf));
4148 nicenum(new_class_space, newnumbuf, sizeof (newnumbuf));
4149 (void) printf("%s grew from %s to %s\n",
4150 spa->spa_name, oldnumbuf, newnumbuf);
4153 spa_config_exit(spa, SCL_STATE, spa);
4154 mutex_exit(&ztest_vdev_lock);
4155 mutex_exit(&ztest_checkpoint_lock);
4159 * Verify that dmu_objset_{create,destroy,open,close} work as expected.
4162 ztest_objset_create_cb(objset_t *os, void *arg, cred_t *cr, dmu_tx_t *tx)
4164 (void) arg, (void) cr;
4167 * Create the objects common to all ztest datasets.
4169 VERIFY0(zap_create_claim(os, ZTEST_DIROBJ,
4170 DMU_OT_ZAP_OTHER, DMU_OT_NONE, 0, tx));
4174 ztest_dataset_create(char *dsname)
4178 dsl_crypto_params_t *dcp = NULL;
4181 * 50% of the time, we create encrypted datasets
4182 * using a random cipher suite and a hard-coded
4185 rand = ztest_random(2);
4187 nvlist_t *crypto_args = fnvlist_alloc();
4188 nvlist_t *props = fnvlist_alloc();
4190 /* slight bias towards the default cipher suite */
4191 rand = ztest_random(ZIO_CRYPT_FUNCTIONS);
4192 if (rand < ZIO_CRYPT_AES_128_CCM)
4193 rand = ZIO_CRYPT_ON;
4195 fnvlist_add_uint64(props,
4196 zfs_prop_to_name(ZFS_PROP_ENCRYPTION), rand);
4197 fnvlist_add_uint8_array(crypto_args, "wkeydata",
4198 (uint8_t *)ztest_wkeydata, WRAPPING_KEY_LEN);
4201 * These parameters aren't really used by the kernel. They
4202 * are simply stored so that userspace knows how to load
4205 fnvlist_add_uint64(props,
4206 zfs_prop_to_name(ZFS_PROP_KEYFORMAT), ZFS_KEYFORMAT_RAW);
4207 fnvlist_add_string(props,
4208 zfs_prop_to_name(ZFS_PROP_KEYLOCATION), "prompt");
4209 fnvlist_add_uint64(props,
4210 zfs_prop_to_name(ZFS_PROP_PBKDF2_SALT), 0ULL);
4211 fnvlist_add_uint64(props,
4212 zfs_prop_to_name(ZFS_PROP_PBKDF2_ITERS), 0ULL);
4214 VERIFY0(dsl_crypto_params_create_nvlist(DCP_CMD_NONE, props,
4215 crypto_args, &dcp));
4218 * Cycle through all available encryption implementations
4219 * to verify interoperability.
4221 VERIFY0(gcm_impl_set("cycle"));
4222 VERIFY0(aes_impl_set("cycle"));
4224 fnvlist_free(crypto_args);
4225 fnvlist_free(props);
4228 err = dmu_objset_create(dsname, DMU_OST_OTHER, 0, dcp,
4229 ztest_objset_create_cb, NULL);
4230 dsl_crypto_params_free(dcp, !!err);
4232 rand = ztest_random(100);
4233 if (err || rand < 80)
4236 if (ztest_opts.zo_verbose >= 5)
4237 (void) printf("Setting dataset %s to sync always\n", dsname);
4238 return (ztest_dsl_prop_set_uint64(dsname, ZFS_PROP_SYNC,
4239 ZFS_SYNC_ALWAYS, B_FALSE));
4243 ztest_objset_destroy_cb(const char *name, void *arg)
4247 dmu_object_info_t doi;
4251 * Verify that the dataset contains a directory object.
4253 VERIFY0(ztest_dmu_objset_own(name, DMU_OST_OTHER, B_TRUE,
4254 B_TRUE, FTAG, &os));
4255 error = dmu_object_info(os, ZTEST_DIROBJ, &doi);
4256 if (error != ENOENT) {
4257 /* We could have crashed in the middle of destroying it */
4259 ASSERT3U(doi.doi_type, ==, DMU_OT_ZAP_OTHER);
4260 ASSERT3S(doi.doi_physical_blocks_512, >=, 0);
4262 dmu_objset_disown(os, B_TRUE, FTAG);
4265 * Destroy the dataset.
4267 if (strchr(name, '@') != NULL) {
4268 error = dsl_destroy_snapshot(name, B_TRUE);
4269 if (error != ECHRNG) {
4271 * The program was executed, but encountered a runtime
4272 * error, such as insufficient slop, or a hold on the
4278 error = dsl_destroy_head(name);
4279 if (error == ENOSPC) {
4280 /* There could be checkpoint or insufficient slop */
4281 ztest_record_enospc(FTAG);
4282 } else if (error != EBUSY) {
4283 /* There could be a hold on this dataset */
4291 ztest_snapshot_create(char *osname, uint64_t id)
4293 char snapname[ZFS_MAX_DATASET_NAME_LEN];
4296 (void) snprintf(snapname, sizeof (snapname), "%"PRIu64"", id);
4298 error = dmu_objset_snapshot_one(osname, snapname);
4299 if (error == ENOSPC) {
4300 ztest_record_enospc(FTAG);
4303 if (error != 0 && error != EEXIST && error != ECHRNG) {
4304 fatal(B_FALSE, "ztest_snapshot_create(%s@%s) = %d", osname,
4311 ztest_snapshot_destroy(char *osname, uint64_t id)
4313 char snapname[ZFS_MAX_DATASET_NAME_LEN];
4316 (void) snprintf(snapname, sizeof (snapname), "%s@%"PRIu64"",
4319 error = dsl_destroy_snapshot(snapname, B_FALSE);
4320 if (error != 0 && error != ENOENT && error != ECHRNG)
4321 fatal(B_FALSE, "ztest_snapshot_destroy(%s) = %d",
4327 ztest_dmu_objset_create_destroy(ztest_ds_t *zd, uint64_t id)
4334 char name[ZFS_MAX_DATASET_NAME_LEN];
4338 zdtmp = umem_alloc(sizeof (ztest_ds_t), UMEM_NOFAIL);
4340 (void) pthread_rwlock_rdlock(&ztest_name_lock);
4342 (void) snprintf(name, sizeof (name), "%s/temp_%"PRIu64"",
4343 ztest_opts.zo_pool, id);
4346 * If this dataset exists from a previous run, process its replay log
4347 * half of the time. If we don't replay it, then dsl_destroy_head()
4348 * (invoked from ztest_objset_destroy_cb()) should just throw it away.
4350 if (ztest_random(2) == 0 &&
4351 ztest_dmu_objset_own(name, DMU_OST_OTHER, B_FALSE,
4352 B_TRUE, FTAG, &os) == 0) {
4353 ztest_zd_init(zdtmp, NULL, os);
4354 zil_replay(os, zdtmp, ztest_replay_vector);
4355 ztest_zd_fini(zdtmp);
4356 dmu_objset_disown(os, B_TRUE, FTAG);
4360 * There may be an old instance of the dataset we're about to
4361 * create lying around from a previous run. If so, destroy it
4362 * and all of its snapshots.
4364 (void) dmu_objset_find(name, ztest_objset_destroy_cb, NULL,
4365 DS_FIND_CHILDREN | DS_FIND_SNAPSHOTS);
4368 * Verify that the destroyed dataset is no longer in the namespace.
4369 * It may still be present if the destroy above fails with ENOSPC.
4371 error = ztest_dmu_objset_own(name, DMU_OST_OTHER, B_TRUE, B_TRUE,
4374 dmu_objset_disown(os, B_TRUE, FTAG);
4375 ztest_record_enospc(FTAG);
4378 VERIFY3U(ENOENT, ==, error);
4381 * Verify that we can create a new dataset.
4383 error = ztest_dataset_create(name);
4385 if (error == ENOSPC) {
4386 ztest_record_enospc(FTAG);
4389 fatal(B_FALSE, "dmu_objset_create(%s) = %d", name, error);
4392 VERIFY0(ztest_dmu_objset_own(name, DMU_OST_OTHER, B_FALSE, B_TRUE,
4395 ztest_zd_init(zdtmp, NULL, os);
4398 * Open the intent log for it.
4400 zilog = zil_open(os, ztest_get_data, NULL);
4403 * Put some objects in there, do a little I/O to them,
4404 * and randomly take a couple of snapshots along the way.
4406 iters = ztest_random(5);
4407 for (i = 0; i < iters; i++) {
4408 ztest_dmu_object_alloc_free(zdtmp, id);
4409 if (ztest_random(iters) == 0)
4410 (void) ztest_snapshot_create(name, i);
4414 * Verify that we cannot create an existing dataset.
4416 VERIFY3U(EEXIST, ==,
4417 dmu_objset_create(name, DMU_OST_OTHER, 0, NULL, NULL, NULL));
4420 * Verify that we can hold an objset that is also owned.
4422 VERIFY0(dmu_objset_hold(name, FTAG, &os2));
4423 dmu_objset_rele(os2, FTAG);
4426 * Verify that we cannot own an objset that is already owned.
4428 VERIFY3U(EBUSY, ==, ztest_dmu_objset_own(name, DMU_OST_OTHER,
4429 B_FALSE, B_TRUE, FTAG, &os2));
4432 dmu_objset_disown(os, B_TRUE, FTAG);
4433 ztest_zd_fini(zdtmp);
4435 (void) pthread_rwlock_unlock(&ztest_name_lock);
4437 umem_free(zdtmp, sizeof (ztest_ds_t));
4441 * Verify that dmu_snapshot_{create,destroy,open,close} work as expected.
4444 ztest_dmu_snapshot_create_destroy(ztest_ds_t *zd, uint64_t id)
4446 (void) pthread_rwlock_rdlock(&ztest_name_lock);
4447 (void) ztest_snapshot_destroy(zd->zd_name, id);
4448 (void) ztest_snapshot_create(zd->zd_name, id);
4449 (void) pthread_rwlock_unlock(&ztest_name_lock);
4453 * Cleanup non-standard snapshots and clones.
4456 ztest_dsl_dataset_cleanup(char *osname, uint64_t id)
4465 snap1name = umem_alloc(ZFS_MAX_DATASET_NAME_LEN, UMEM_NOFAIL);
4466 clone1name = umem_alloc(ZFS_MAX_DATASET_NAME_LEN, UMEM_NOFAIL);
4467 snap2name = umem_alloc(ZFS_MAX_DATASET_NAME_LEN, UMEM_NOFAIL);
4468 clone2name = umem_alloc(ZFS_MAX_DATASET_NAME_LEN, UMEM_NOFAIL);
4469 snap3name = umem_alloc(ZFS_MAX_DATASET_NAME_LEN, UMEM_NOFAIL);
4471 (void) snprintf(snap1name, ZFS_MAX_DATASET_NAME_LEN, "%s@s1_%"PRIu64"",
4473 (void) snprintf(clone1name, ZFS_MAX_DATASET_NAME_LEN, "%s/c1_%"PRIu64"",
4475 (void) snprintf(snap2name, ZFS_MAX_DATASET_NAME_LEN, "%s@s2_%"PRIu64"",
4477 (void) snprintf(clone2name, ZFS_MAX_DATASET_NAME_LEN, "%s/c2_%"PRIu64"",
4479 (void) snprintf(snap3name, ZFS_MAX_DATASET_NAME_LEN, "%s@s3_%"PRIu64"",
4482 error = dsl_destroy_head(clone2name);
4483 if (error && error != ENOENT)
4484 fatal(B_FALSE, "dsl_destroy_head(%s) = %d", clone2name, error);
4485 error = dsl_destroy_snapshot(snap3name, B_FALSE);
4486 if (error && error != ENOENT)
4487 fatal(B_FALSE, "dsl_destroy_snapshot(%s) = %d",
4489 error = dsl_destroy_snapshot(snap2name, B_FALSE);
4490 if (error && error != ENOENT)
4491 fatal(B_FALSE, "dsl_destroy_snapshot(%s) = %d",
4493 error = dsl_destroy_head(clone1name);
4494 if (error && error != ENOENT)
4495 fatal(B_FALSE, "dsl_destroy_head(%s) = %d", clone1name, error);
4496 error = dsl_destroy_snapshot(snap1name, B_FALSE);
4497 if (error && error != ENOENT)
4498 fatal(B_FALSE, "dsl_destroy_snapshot(%s) = %d",
4501 umem_free(snap1name, ZFS_MAX_DATASET_NAME_LEN);
4502 umem_free(clone1name, ZFS_MAX_DATASET_NAME_LEN);
4503 umem_free(snap2name, ZFS_MAX_DATASET_NAME_LEN);
4504 umem_free(clone2name, ZFS_MAX_DATASET_NAME_LEN);
4505 umem_free(snap3name, ZFS_MAX_DATASET_NAME_LEN);
4509 * Verify dsl_dataset_promote handles EBUSY
4512 ztest_dsl_dataset_promote_busy(ztest_ds_t *zd, uint64_t id)
4520 char *osname = zd->zd_name;
4523 snap1name = umem_alloc(ZFS_MAX_DATASET_NAME_LEN, UMEM_NOFAIL);
4524 clone1name = umem_alloc(ZFS_MAX_DATASET_NAME_LEN, UMEM_NOFAIL);
4525 snap2name = umem_alloc(ZFS_MAX_DATASET_NAME_LEN, UMEM_NOFAIL);
4526 clone2name = umem_alloc(ZFS_MAX_DATASET_NAME_LEN, UMEM_NOFAIL);
4527 snap3name = umem_alloc(ZFS_MAX_DATASET_NAME_LEN, UMEM_NOFAIL);
4529 (void) pthread_rwlock_rdlock(&ztest_name_lock);
4531 ztest_dsl_dataset_cleanup(osname, id);
4533 (void) snprintf(snap1name, ZFS_MAX_DATASET_NAME_LEN, "%s@s1_%"PRIu64"",
4535 (void) snprintf(clone1name, ZFS_MAX_DATASET_NAME_LEN, "%s/c1_%"PRIu64"",
4537 (void) snprintf(snap2name, ZFS_MAX_DATASET_NAME_LEN, "%s@s2_%"PRIu64"",
4539 (void) snprintf(clone2name, ZFS_MAX_DATASET_NAME_LEN, "%s/c2_%"PRIu64"",
4541 (void) snprintf(snap3name, ZFS_MAX_DATASET_NAME_LEN, "%s@s3_%"PRIu64"",
4544 error = dmu_objset_snapshot_one(osname, strchr(snap1name, '@') + 1);
4545 if (error && error != EEXIST) {
4546 if (error == ENOSPC) {
4547 ztest_record_enospc(FTAG);
4550 fatal(B_FALSE, "dmu_take_snapshot(%s) = %d", snap1name, error);
4553 error = dmu_objset_clone(clone1name, snap1name);
4555 if (error == ENOSPC) {
4556 ztest_record_enospc(FTAG);
4559 fatal(B_FALSE, "dmu_objset_create(%s) = %d", clone1name, error);
4562 error = dmu_objset_snapshot_one(clone1name, strchr(snap2name, '@') + 1);
4563 if (error && error != EEXIST) {
4564 if (error == ENOSPC) {
4565 ztest_record_enospc(FTAG);
4568 fatal(B_FALSE, "dmu_open_snapshot(%s) = %d", snap2name, error);
4571 error = dmu_objset_snapshot_one(clone1name, strchr(snap3name, '@') + 1);
4572 if (error && error != EEXIST) {
4573 if (error == ENOSPC) {
4574 ztest_record_enospc(FTAG);
4577 fatal(B_FALSE, "dmu_open_snapshot(%s) = %d", snap3name, error);
4580 error = dmu_objset_clone(clone2name, snap3name);
4582 if (error == ENOSPC) {
4583 ztest_record_enospc(FTAG);
4586 fatal(B_FALSE, "dmu_objset_create(%s) = %d", clone2name, error);
4589 error = ztest_dmu_objset_own(snap2name, DMU_OST_ANY, B_TRUE, B_TRUE,
4592 fatal(B_FALSE, "dmu_objset_own(%s) = %d", snap2name, error);
4593 error = dsl_dataset_promote(clone2name, NULL);
4594 if (error == ENOSPC) {
4595 dmu_objset_disown(os, B_TRUE, FTAG);
4596 ztest_record_enospc(FTAG);
4600 fatal(B_FALSE, "dsl_dataset_promote(%s), %d, not EBUSY",
4602 dmu_objset_disown(os, B_TRUE, FTAG);
4605 ztest_dsl_dataset_cleanup(osname, id);
4607 (void) pthread_rwlock_unlock(&ztest_name_lock);
4609 umem_free(snap1name, ZFS_MAX_DATASET_NAME_LEN);
4610 umem_free(clone1name, ZFS_MAX_DATASET_NAME_LEN);
4611 umem_free(snap2name, ZFS_MAX_DATASET_NAME_LEN);
4612 umem_free(clone2name, ZFS_MAX_DATASET_NAME_LEN);
4613 umem_free(snap3name, ZFS_MAX_DATASET_NAME_LEN);
4616 #undef OD_ARRAY_SIZE
4617 #define OD_ARRAY_SIZE 4
4620 * Verify that dmu_object_{alloc,free} work as expected.
4623 ztest_dmu_object_alloc_free(ztest_ds_t *zd, uint64_t id)
4630 size = sizeof (ztest_od_t) * OD_ARRAY_SIZE;
4631 od = umem_alloc(size, UMEM_NOFAIL);
4632 batchsize = OD_ARRAY_SIZE;
4634 for (b = 0; b < batchsize; b++)
4635 ztest_od_init(od + b, id, FTAG, b, DMU_OT_UINT64_OTHER,
4639 * Destroy the previous batch of objects, create a new batch,
4640 * and do some I/O on the new objects.
4642 if (ztest_object_init(zd, od, size, B_TRUE) != 0) {
4644 umem_free(od, size);
4648 while (ztest_random(4 * batchsize) != 0)
4649 ztest_io(zd, od[ztest_random(batchsize)].od_object,
4650 ztest_random(ZTEST_RANGE_LOCKS) << SPA_MAXBLOCKSHIFT);
4652 umem_free(od, size);
4656 * Rewind the global allocator to verify object allocation backfilling.
4659 ztest_dmu_object_next_chunk(ztest_ds_t *zd, uint64_t id)
4662 objset_t *os = zd->zd_os;
4663 uint_t dnodes_per_chunk = 1 << dmu_object_alloc_chunk_shift;
4667 * Rewind the global allocator randomly back to a lower object number
4668 * to force backfilling and reclamation of recently freed dnodes.
4670 mutex_enter(&os->os_obj_lock);
4671 object = ztest_random(os->os_obj_next_chunk);
4672 os->os_obj_next_chunk = P2ALIGN(object, dnodes_per_chunk);
4673 mutex_exit(&os->os_obj_lock);
4676 #undef OD_ARRAY_SIZE
4677 #define OD_ARRAY_SIZE 2
4680 * Verify that dmu_{read,write} work as expected.
4683 ztest_dmu_read_write(ztest_ds_t *zd, uint64_t id)
4688 objset_t *os = zd->zd_os;
4689 size = sizeof (ztest_od_t) * OD_ARRAY_SIZE;
4690 od = umem_alloc(size, UMEM_NOFAIL);
4693 uint64_t i, n, s, txg;
4694 bufwad_t *packbuf, *bigbuf, *pack, *bigH, *bigT;
4695 uint64_t packobj, packoff, packsize, bigobj, bigoff, bigsize;
4696 uint64_t chunksize = (1000 + ztest_random(1000)) * sizeof (uint64_t);
4697 uint64_t regions = 997;
4698 uint64_t stride = 123456789ULL;
4699 uint64_t width = 40;
4700 int free_percent = 5;
4703 * This test uses two objects, packobj and bigobj, that are always
4704 * updated together (i.e. in the same tx) so that their contents are
4705 * in sync and can be compared. Their contents relate to each other
4706 * in a simple way: packobj is a dense array of 'bufwad' structures,
4707 * while bigobj is a sparse array of the same bufwads. Specifically,
4708 * for any index n, there are three bufwads that should be identical:
4710 * packobj, at offset n * sizeof (bufwad_t)
4711 * bigobj, at the head of the nth chunk
4712 * bigobj, at the tail of the nth chunk
4714 * The chunk size is arbitrary. It doesn't have to be a power of two,
4715 * and it doesn't have any relation to the object blocksize.
4716 * The only requirement is that it can hold at least two bufwads.
4718 * Normally, we write the bufwad to each of these locations.
4719 * However, free_percent of the time we instead write zeroes to
4720 * packobj and perform a dmu_free_range() on bigobj. By comparing
4721 * bigobj to packobj, we can verify that the DMU is correctly
4722 * tracking which parts of an object are allocated and free,
4723 * and that the contents of the allocated blocks are correct.
4727 * Read the directory info. If it's the first time, set things up.
4729 ztest_od_init(od, id, FTAG, 0, DMU_OT_UINT64_OTHER, 0, 0, chunksize);
4730 ztest_od_init(od + 1, id, FTAG, 1, DMU_OT_UINT64_OTHER, 0, 0,
4733 if (ztest_object_init(zd, od, size, B_FALSE) != 0) {
4734 umem_free(od, size);
4738 bigobj = od[0].od_object;
4739 packobj = od[1].od_object;
4740 chunksize = od[0].od_gen;
4741 ASSERT3U(chunksize, ==, od[1].od_gen);
4744 * Prefetch a random chunk of the big object.
4745 * Our aim here is to get some async reads in flight
4746 * for blocks that we may free below; the DMU should
4747 * handle this race correctly.
4749 n = ztest_random(regions) * stride + ztest_random(width);
4750 s = 1 + ztest_random(2 * width - 1);
4751 dmu_prefetch(os, bigobj, 0, n * chunksize, s * chunksize,
4752 ZIO_PRIORITY_SYNC_READ);
4755 * Pick a random index and compute the offsets into packobj and bigobj.
4757 n = ztest_random(regions) * stride + ztest_random(width);
4758 s = 1 + ztest_random(width - 1);
4760 packoff = n * sizeof (bufwad_t);
4761 packsize = s * sizeof (bufwad_t);
4763 bigoff = n * chunksize;
4764 bigsize = s * chunksize;
4766 packbuf = umem_alloc(packsize, UMEM_NOFAIL);
4767 bigbuf = umem_alloc(bigsize, UMEM_NOFAIL);
4770 * free_percent of the time, free a range of bigobj rather than
4773 freeit = (ztest_random(100) < free_percent);
4776 * Read the current contents of our objects.
4778 error = dmu_read(os, packobj, packoff, packsize, packbuf,
4781 error = dmu_read(os, bigobj, bigoff, bigsize, bigbuf,
4786 * Get a tx for the mods to both packobj and bigobj.
4788 tx = dmu_tx_create(os);
4790 dmu_tx_hold_write(tx, packobj, packoff, packsize);
4793 dmu_tx_hold_free(tx, bigobj, bigoff, bigsize);
4795 dmu_tx_hold_write(tx, bigobj, bigoff, bigsize);
4797 /* This accounts for setting the checksum/compression. */
4798 dmu_tx_hold_bonus(tx, bigobj);
4800 txg = ztest_tx_assign(tx, TXG_MIGHTWAIT, FTAG);
4802 umem_free(packbuf, packsize);
4803 umem_free(bigbuf, bigsize);
4804 umem_free(od, size);
4808 enum zio_checksum cksum;
4810 cksum = (enum zio_checksum)
4811 ztest_random_dsl_prop(ZFS_PROP_CHECKSUM);
4812 } while (cksum >= ZIO_CHECKSUM_LEGACY_FUNCTIONS);
4813 dmu_object_set_checksum(os, bigobj, cksum, tx);
4815 enum zio_compress comp;
4817 comp = (enum zio_compress)
4818 ztest_random_dsl_prop(ZFS_PROP_COMPRESSION);
4819 } while (comp >= ZIO_COMPRESS_LEGACY_FUNCTIONS);
4820 dmu_object_set_compress(os, bigobj, comp, tx);
4823 * For each index from n to n + s, verify that the existing bufwad
4824 * in packobj matches the bufwads at the head and tail of the
4825 * corresponding chunk in bigobj. Then update all three bufwads
4826 * with the new values we want to write out.
4828 for (i = 0; i < s; i++) {
4830 pack = (bufwad_t *)((char *)packbuf + i * sizeof (bufwad_t));
4832 bigH = (bufwad_t *)((char *)bigbuf + i * chunksize);
4834 bigT = (bufwad_t *)((char *)bigH + chunksize) - 1;
4836 ASSERT3U((uintptr_t)bigH - (uintptr_t)bigbuf, <, bigsize);
4837 ASSERT3U((uintptr_t)bigT - (uintptr_t)bigbuf, <, bigsize);
4839 if (pack->bw_txg > txg)
4841 "future leak: got %"PRIx64", open txg is %"PRIx64"",
4844 if (pack->bw_data != 0 && pack->bw_index != n + i)
4845 fatal(B_FALSE, "wrong index: "
4846 "got %"PRIx64", wanted %"PRIx64"+%"PRIx64"",
4847 pack->bw_index, n, i);
4849 if (memcmp(pack, bigH, sizeof (bufwad_t)) != 0)
4850 fatal(B_FALSE, "pack/bigH mismatch in %p/%p",
4853 if (memcmp(pack, bigT, sizeof (bufwad_t)) != 0)
4854 fatal(B_FALSE, "pack/bigT mismatch in %p/%p",
4858 memset(pack, 0, sizeof (bufwad_t));
4860 pack->bw_index = n + i;
4862 pack->bw_data = 1 + ztest_random(-2ULL);
4869 * We've verified all the old bufwads, and made new ones.
4870 * Now write them out.
4872 dmu_write(os, packobj, packoff, packsize, packbuf, tx);
4875 if (ztest_opts.zo_verbose >= 7) {
4876 (void) printf("freeing offset %"PRIx64" size %"PRIx64""
4878 bigoff, bigsize, txg);
4880 VERIFY0(dmu_free_range(os, bigobj, bigoff, bigsize, tx));
4882 if (ztest_opts.zo_verbose >= 7) {
4883 (void) printf("writing offset %"PRIx64" size %"PRIx64""
4885 bigoff, bigsize, txg);
4887 dmu_write(os, bigobj, bigoff, bigsize, bigbuf, tx);
4893 * Sanity check the stuff we just wrote.
4896 void *packcheck = umem_alloc(packsize, UMEM_NOFAIL);
4897 void *bigcheck = umem_alloc(bigsize, UMEM_NOFAIL);
4899 VERIFY0(dmu_read(os, packobj, packoff,
4900 packsize, packcheck, DMU_READ_PREFETCH));
4901 VERIFY0(dmu_read(os, bigobj, bigoff,
4902 bigsize, bigcheck, DMU_READ_PREFETCH));
4904 ASSERT0(memcmp(packbuf, packcheck, packsize));
4905 ASSERT0(memcmp(bigbuf, bigcheck, bigsize));
4907 umem_free(packcheck, packsize);
4908 umem_free(bigcheck, bigsize);
4911 umem_free(packbuf, packsize);
4912 umem_free(bigbuf, bigsize);
4913 umem_free(od, size);
4917 compare_and_update_pbbufs(uint64_t s, bufwad_t *packbuf, bufwad_t *bigbuf,
4918 uint64_t bigsize, uint64_t n, uint64_t chunksize, uint64_t txg)
4926 * For each index from n to n + s, verify that the existing bufwad
4927 * in packobj matches the bufwads at the head and tail of the
4928 * corresponding chunk in bigobj. Then update all three bufwads
4929 * with the new values we want to write out.
4931 for (i = 0; i < s; i++) {
4933 pack = (bufwad_t *)((char *)packbuf + i * sizeof (bufwad_t));
4935 bigH = (bufwad_t *)((char *)bigbuf + i * chunksize);
4937 bigT = (bufwad_t *)((char *)bigH + chunksize) - 1;
4939 ASSERT3U((uintptr_t)bigH - (uintptr_t)bigbuf, <, bigsize);
4940 ASSERT3U((uintptr_t)bigT - (uintptr_t)bigbuf, <, bigsize);
4942 if (pack->bw_txg > txg)
4944 "future leak: got %"PRIx64", open txg is %"PRIx64"",
4947 if (pack->bw_data != 0 && pack->bw_index != n + i)
4948 fatal(B_FALSE, "wrong index: "
4949 "got %"PRIx64", wanted %"PRIx64"+%"PRIx64"",
4950 pack->bw_index, n, i);
4952 if (memcmp(pack, bigH, sizeof (bufwad_t)) != 0)
4953 fatal(B_FALSE, "pack/bigH mismatch in %p/%p",
4956 if (memcmp(pack, bigT, sizeof (bufwad_t)) != 0)
4957 fatal(B_FALSE, "pack/bigT mismatch in %p/%p",
4960 pack->bw_index = n + i;
4962 pack->bw_data = 1 + ztest_random(-2ULL);
4969 #undef OD_ARRAY_SIZE
4970 #define OD_ARRAY_SIZE 2
4973 ztest_dmu_read_write_zcopy(ztest_ds_t *zd, uint64_t id)
4975 objset_t *os = zd->zd_os;
4982 bufwad_t *packbuf, *bigbuf;
4983 uint64_t packobj, packoff, packsize, bigobj, bigoff, bigsize;
4984 uint64_t blocksize = ztest_random_blocksize();
4985 uint64_t chunksize = blocksize;
4986 uint64_t regions = 997;
4987 uint64_t stride = 123456789ULL;
4989 dmu_buf_t *bonus_db;
4990 arc_buf_t **bigbuf_arcbufs;
4991 dmu_object_info_t doi;
4993 size = sizeof (ztest_od_t) * OD_ARRAY_SIZE;
4994 od = umem_alloc(size, UMEM_NOFAIL);
4997 * This test uses two objects, packobj and bigobj, that are always
4998 * updated together (i.e. in the same tx) so that their contents are
4999 * in sync and can be compared. Their contents relate to each other
5000 * in a simple way: packobj is a dense array of 'bufwad' structures,
5001 * while bigobj is a sparse array of the same bufwads. Specifically,
5002 * for any index n, there are three bufwads that should be identical:
5004 * packobj, at offset n * sizeof (bufwad_t)
5005 * bigobj, at the head of the nth chunk
5006 * bigobj, at the tail of the nth chunk
5008 * The chunk size is set equal to bigobj block size so that
5009 * dmu_assign_arcbuf_by_dbuf() can be tested for object updates.
5013 * Read the directory info. If it's the first time, set things up.
5015 ztest_od_init(od, id, FTAG, 0, DMU_OT_UINT64_OTHER, blocksize, 0, 0);
5016 ztest_od_init(od + 1, id, FTAG, 1, DMU_OT_UINT64_OTHER, 0, 0,
5020 if (ztest_object_init(zd, od, size, B_FALSE) != 0) {
5021 umem_free(od, size);
5025 bigobj = od[0].od_object;
5026 packobj = od[1].od_object;
5027 blocksize = od[0].od_blocksize;
5028 chunksize = blocksize;
5029 ASSERT3U(chunksize, ==, od[1].od_gen);
5031 VERIFY0(dmu_object_info(os, bigobj, &doi));
5032 VERIFY(ISP2(doi.doi_data_block_size));
5033 VERIFY3U(chunksize, ==, doi.doi_data_block_size);
5034 VERIFY3U(chunksize, >=, 2 * sizeof (bufwad_t));
5037 * Pick a random index and compute the offsets into packobj and bigobj.
5039 n = ztest_random(regions) * stride + ztest_random(width);
5040 s = 1 + ztest_random(width - 1);
5042 packoff = n * sizeof (bufwad_t);
5043 packsize = s * sizeof (bufwad_t);
5045 bigoff = n * chunksize;
5046 bigsize = s * chunksize;
5048 packbuf = umem_zalloc(packsize, UMEM_NOFAIL);
5049 bigbuf = umem_zalloc(bigsize, UMEM_NOFAIL);
5051 VERIFY0(dmu_bonus_hold(os, bigobj, FTAG, &bonus_db));
5053 bigbuf_arcbufs = umem_zalloc(2 * s * sizeof (arc_buf_t *), UMEM_NOFAIL);
5056 * Iteration 0 test zcopy for DB_UNCACHED dbufs.
5057 * Iteration 1 test zcopy to already referenced dbufs.
5058 * Iteration 2 test zcopy to dirty dbuf in the same txg.
5059 * Iteration 3 test zcopy to dbuf dirty in previous txg.
5060 * Iteration 4 test zcopy when dbuf is no longer dirty.
5061 * Iteration 5 test zcopy when it can't be done.
5062 * Iteration 6 one more zcopy write.
5064 for (i = 0; i < 7; i++) {
5069 * In iteration 5 (i == 5) use arcbufs
5070 * that don't match bigobj blksz to test
5071 * dmu_assign_arcbuf_by_dbuf() when it can't directly
5072 * assign an arcbuf to a dbuf.
5074 for (j = 0; j < s; j++) {
5075 if (i != 5 || chunksize < (SPA_MINBLOCKSIZE * 2)) {
5077 dmu_request_arcbuf(bonus_db, chunksize);
5079 bigbuf_arcbufs[2 * j] =
5080 dmu_request_arcbuf(bonus_db, chunksize / 2);
5081 bigbuf_arcbufs[2 * j + 1] =
5082 dmu_request_arcbuf(bonus_db, chunksize / 2);
5087 * Get a tx for the mods to both packobj and bigobj.
5089 tx = dmu_tx_create(os);
5091 dmu_tx_hold_write(tx, packobj, packoff, packsize);
5092 dmu_tx_hold_write(tx, bigobj, bigoff, bigsize);
5094 txg = ztest_tx_assign(tx, TXG_MIGHTWAIT, FTAG);
5096 umem_free(packbuf, packsize);
5097 umem_free(bigbuf, bigsize);
5098 for (j = 0; j < s; j++) {
5100 chunksize < (SPA_MINBLOCKSIZE * 2)) {
5101 dmu_return_arcbuf(bigbuf_arcbufs[j]);
5104 bigbuf_arcbufs[2 * j]);
5106 bigbuf_arcbufs[2 * j + 1]);
5109 umem_free(bigbuf_arcbufs, 2 * s * sizeof (arc_buf_t *));
5110 umem_free(od, size);
5111 dmu_buf_rele(bonus_db, FTAG);
5116 * 50% of the time don't read objects in the 1st iteration to
5117 * test dmu_assign_arcbuf_by_dbuf() for the case when there are
5118 * no existing dbufs for the specified offsets.
5120 if (i != 0 || ztest_random(2) != 0) {
5121 error = dmu_read(os, packobj, packoff,
5122 packsize, packbuf, DMU_READ_PREFETCH);
5124 error = dmu_read(os, bigobj, bigoff, bigsize,
5125 bigbuf, DMU_READ_PREFETCH);
5128 compare_and_update_pbbufs(s, packbuf, bigbuf, bigsize,
5132 * We've verified all the old bufwads, and made new ones.
5133 * Now write them out.
5135 dmu_write(os, packobj, packoff, packsize, packbuf, tx);
5136 if (ztest_opts.zo_verbose >= 7) {
5137 (void) printf("writing offset %"PRIx64" size %"PRIx64""
5139 bigoff, bigsize, txg);
5141 for (off = bigoff, j = 0; j < s; j++, off += chunksize) {
5143 if (i != 5 || chunksize < (SPA_MINBLOCKSIZE * 2)) {
5144 memcpy(bigbuf_arcbufs[j]->b_data,
5145 (caddr_t)bigbuf + (off - bigoff),
5148 memcpy(bigbuf_arcbufs[2 * j]->b_data,
5149 (caddr_t)bigbuf + (off - bigoff),
5151 memcpy(bigbuf_arcbufs[2 * j + 1]->b_data,
5152 (caddr_t)bigbuf + (off - bigoff) +
5158 VERIFY(dmu_buf_hold(os, bigobj, off,
5159 FTAG, &dbt, DMU_READ_NO_PREFETCH) == 0);
5161 if (i != 5 || chunksize < (SPA_MINBLOCKSIZE * 2)) {
5162 VERIFY0(dmu_assign_arcbuf_by_dbuf(bonus_db,
5163 off, bigbuf_arcbufs[j], tx));
5165 VERIFY0(dmu_assign_arcbuf_by_dbuf(bonus_db,
5166 off, bigbuf_arcbufs[2 * j], tx));
5167 VERIFY0(dmu_assign_arcbuf_by_dbuf(bonus_db,
5168 off + chunksize / 2,
5169 bigbuf_arcbufs[2 * j + 1], tx));
5172 dmu_buf_rele(dbt, FTAG);
5178 * Sanity check the stuff we just wrote.
5181 void *packcheck = umem_alloc(packsize, UMEM_NOFAIL);
5182 void *bigcheck = umem_alloc(bigsize, UMEM_NOFAIL);
5184 VERIFY0(dmu_read(os, packobj, packoff,
5185 packsize, packcheck, DMU_READ_PREFETCH));
5186 VERIFY0(dmu_read(os, bigobj, bigoff,
5187 bigsize, bigcheck, DMU_READ_PREFETCH));
5189 ASSERT0(memcmp(packbuf, packcheck, packsize));
5190 ASSERT0(memcmp(bigbuf, bigcheck, bigsize));
5192 umem_free(packcheck, packsize);
5193 umem_free(bigcheck, bigsize);
5196 txg_wait_open(dmu_objset_pool(os), 0, B_TRUE);
5197 } else if (i == 3) {
5198 txg_wait_synced(dmu_objset_pool(os), 0);
5202 dmu_buf_rele(bonus_db, FTAG);
5203 umem_free(packbuf, packsize);
5204 umem_free(bigbuf, bigsize);
5205 umem_free(bigbuf_arcbufs, 2 * s * sizeof (arc_buf_t *));
5206 umem_free(od, size);
5210 ztest_dmu_write_parallel(ztest_ds_t *zd, uint64_t id)
5215 od = umem_alloc(sizeof (ztest_od_t), UMEM_NOFAIL);
5216 uint64_t offset = (1ULL << (ztest_random(20) + 43)) +
5217 (ztest_random(ZTEST_RANGE_LOCKS) << SPA_MAXBLOCKSHIFT);
5220 * Have multiple threads write to large offsets in an object
5221 * to verify that parallel writes to an object -- even to the
5222 * same blocks within the object -- doesn't cause any trouble.
5224 ztest_od_init(od, ID_PARALLEL, FTAG, 0, DMU_OT_UINT64_OTHER, 0, 0, 0);
5226 if (ztest_object_init(zd, od, sizeof (ztest_od_t), B_FALSE) != 0)
5229 while (ztest_random(10) != 0)
5230 ztest_io(zd, od->od_object, offset);
5232 umem_free(od, sizeof (ztest_od_t));
5236 ztest_dmu_prealloc(ztest_ds_t *zd, uint64_t id)
5239 uint64_t offset = (1ULL << (ztest_random(4) + SPA_MAXBLOCKSHIFT)) +
5240 (ztest_random(ZTEST_RANGE_LOCKS) << SPA_MAXBLOCKSHIFT);
5241 uint64_t count = ztest_random(20) + 1;
5242 uint64_t blocksize = ztest_random_blocksize();
5245 od = umem_alloc(sizeof (ztest_od_t), UMEM_NOFAIL);
5247 ztest_od_init(od, id, FTAG, 0, DMU_OT_UINT64_OTHER, blocksize, 0, 0);
5249 if (ztest_object_init(zd, od, sizeof (ztest_od_t),
5250 !ztest_random(2)) != 0) {
5251 umem_free(od, sizeof (ztest_od_t));
5255 if (ztest_truncate(zd, od->od_object, offset, count * blocksize) != 0) {
5256 umem_free(od, sizeof (ztest_od_t));
5260 ztest_prealloc(zd, od->od_object, offset, count * blocksize);
5262 data = umem_zalloc(blocksize, UMEM_NOFAIL);
5264 while (ztest_random(count) != 0) {
5265 uint64_t randoff = offset + (ztest_random(count) * blocksize);
5266 if (ztest_write(zd, od->od_object, randoff, blocksize,
5269 while (ztest_random(4) != 0)
5270 ztest_io(zd, od->od_object, randoff);
5273 umem_free(data, blocksize);
5274 umem_free(od, sizeof (ztest_od_t));
5278 * Verify that zap_{create,destroy,add,remove,update} work as expected.
5280 #define ZTEST_ZAP_MIN_INTS 1
5281 #define ZTEST_ZAP_MAX_INTS 4
5282 #define ZTEST_ZAP_MAX_PROPS 1000
5285 ztest_zap(ztest_ds_t *zd, uint64_t id)
5287 objset_t *os = zd->zd_os;
5290 uint64_t txg, last_txg;
5291 uint64_t value[ZTEST_ZAP_MAX_INTS];
5292 uint64_t zl_ints, zl_intsize, prop;
5295 char propname[100], txgname[100];
5297 const char *const hc[2] = { "s.acl.h", ".s.open.h.hyLZlg" };
5299 od = umem_alloc(sizeof (ztest_od_t), UMEM_NOFAIL);
5300 ztest_od_init(od, id, FTAG, 0, DMU_OT_ZAP_OTHER, 0, 0, 0);
5302 if (ztest_object_init(zd, od, sizeof (ztest_od_t),
5303 !ztest_random(2)) != 0)
5306 object = od->od_object;
5309 * Generate a known hash collision, and verify that
5310 * we can lookup and remove both entries.
5312 tx = dmu_tx_create(os);
5313 dmu_tx_hold_zap(tx, object, B_TRUE, NULL);
5314 txg = ztest_tx_assign(tx, TXG_MIGHTWAIT, FTAG);
5317 for (i = 0; i < 2; i++) {
5319 VERIFY0(zap_add(os, object, hc[i], sizeof (uint64_t),
5322 for (i = 0; i < 2; i++) {
5323 VERIFY3U(EEXIST, ==, zap_add(os, object, hc[i],
5324 sizeof (uint64_t), 1, &value[i], tx));
5326 zap_length(os, object, hc[i], &zl_intsize, &zl_ints));
5327 ASSERT3U(zl_intsize, ==, sizeof (uint64_t));
5328 ASSERT3U(zl_ints, ==, 1);
5330 for (i = 0; i < 2; i++) {
5331 VERIFY0(zap_remove(os, object, hc[i], tx));
5336 * Generate a bunch of random entries.
5338 ints = MAX(ZTEST_ZAP_MIN_INTS, object % ZTEST_ZAP_MAX_INTS);
5340 prop = ztest_random(ZTEST_ZAP_MAX_PROPS);
5341 (void) sprintf(propname, "prop_%"PRIu64"", prop);
5342 (void) sprintf(txgname, "txg_%"PRIu64"", prop);
5343 memset(value, 0, sizeof (value));
5347 * If these zap entries already exist, validate their contents.
5349 error = zap_length(os, object, txgname, &zl_intsize, &zl_ints);
5351 ASSERT3U(zl_intsize, ==, sizeof (uint64_t));
5352 ASSERT3U(zl_ints, ==, 1);
5354 VERIFY0(zap_lookup(os, object, txgname, zl_intsize,
5355 zl_ints, &last_txg));
5357 VERIFY0(zap_length(os, object, propname, &zl_intsize,
5360 ASSERT3U(zl_intsize, ==, sizeof (uint64_t));
5361 ASSERT3U(zl_ints, ==, ints);
5363 VERIFY0(zap_lookup(os, object, propname, zl_intsize,
5366 for (i = 0; i < ints; i++) {
5367 ASSERT3U(value[i], ==, last_txg + object + i);
5370 ASSERT3U(error, ==, ENOENT);
5374 * Atomically update two entries in our zap object.
5375 * The first is named txg_%llu, and contains the txg
5376 * in which the property was last updated. The second
5377 * is named prop_%llu, and the nth element of its value
5378 * should be txg + object + n.
5380 tx = dmu_tx_create(os);
5381 dmu_tx_hold_zap(tx, object, B_TRUE, NULL);
5382 txg = ztest_tx_assign(tx, TXG_MIGHTWAIT, FTAG);
5387 fatal(B_FALSE, "zap future leak: old %"PRIu64" new %"PRIu64"",
5390 for (i = 0; i < ints; i++)
5391 value[i] = txg + object + i;
5393 VERIFY0(zap_update(os, object, txgname, sizeof (uint64_t),
5395 VERIFY0(zap_update(os, object, propname, sizeof (uint64_t),
5401 * Remove a random pair of entries.
5403 prop = ztest_random(ZTEST_ZAP_MAX_PROPS);
5404 (void) sprintf(propname, "prop_%"PRIu64"", prop);
5405 (void) sprintf(txgname, "txg_%"PRIu64"", prop);
5407 error = zap_length(os, object, txgname, &zl_intsize, &zl_ints);
5409 if (error == ENOENT)
5414 tx = dmu_tx_create(os);
5415 dmu_tx_hold_zap(tx, object, B_TRUE, NULL);
5416 txg = ztest_tx_assign(tx, TXG_MIGHTWAIT, FTAG);
5419 VERIFY0(zap_remove(os, object, txgname, tx));
5420 VERIFY0(zap_remove(os, object, propname, tx));
5423 umem_free(od, sizeof (ztest_od_t));
5427 * Test case to test the upgrading of a microzap to fatzap.
5430 ztest_fzap(ztest_ds_t *zd, uint64_t id)
5432 objset_t *os = zd->zd_os;
5434 uint64_t object, txg, value;
5436 od = umem_alloc(sizeof (ztest_od_t), UMEM_NOFAIL);
5437 ztest_od_init(od, id, FTAG, 0, DMU_OT_ZAP_OTHER, 0, 0, 0);
5439 if (ztest_object_init(zd, od, sizeof (ztest_od_t),
5440 !ztest_random(2)) != 0)
5442 object = od->od_object;
5445 * Add entries to this ZAP and make sure it spills over
5446 * and gets upgraded to a fatzap. Also, since we are adding
5447 * 2050 entries we should see ptrtbl growth and leaf-block split.
5449 for (value = 0; value < 2050; value++) {
5450 char name[ZFS_MAX_DATASET_NAME_LEN];
5454 (void) snprintf(name, sizeof (name), "fzap-%"PRIu64"-%"PRIu64"",
5457 tx = dmu_tx_create(os);
5458 dmu_tx_hold_zap(tx, object, B_TRUE, name);
5459 txg = ztest_tx_assign(tx, TXG_MIGHTWAIT, FTAG);
5462 error = zap_add(os, object, name, sizeof (uint64_t), 1,
5464 ASSERT(error == 0 || error == EEXIST);
5468 umem_free(od, sizeof (ztest_od_t));
5472 ztest_zap_parallel(ztest_ds_t *zd, uint64_t id)
5475 objset_t *os = zd->zd_os;
5477 uint64_t txg, object, count, wsize, wc, zl_wsize, zl_wc;
5479 int i, namelen, error;
5480 int micro = ztest_random(2);
5481 char name[20], string_value[20];
5484 od = umem_alloc(sizeof (ztest_od_t), UMEM_NOFAIL);
5485 ztest_od_init(od, ID_PARALLEL, FTAG, micro, DMU_OT_ZAP_OTHER, 0, 0, 0);
5487 if (ztest_object_init(zd, od, sizeof (ztest_od_t), B_FALSE) != 0) {
5488 umem_free(od, sizeof (ztest_od_t));
5492 object = od->od_object;
5495 * Generate a random name of the form 'xxx.....' where each
5496 * x is a random printable character and the dots are dots.
5497 * There are 94 such characters, and the name length goes from
5498 * 6 to 20, so there are 94^3 * 15 = 12,458,760 possible names.
5500 namelen = ztest_random(sizeof (name) - 5) + 5 + 1;
5502 for (i = 0; i < 3; i++)
5503 name[i] = '!' + ztest_random('~' - '!' + 1);
5504 for (; i < namelen - 1; i++)
5508 if ((namelen & 1) || micro) {
5509 wsize = sizeof (txg);
5515 data = string_value;
5519 VERIFY0(zap_count(os, object, &count));
5520 ASSERT3S(count, !=, -1ULL);
5523 * Select an operation: length, lookup, add, update, remove.
5525 i = ztest_random(5);
5528 tx = dmu_tx_create(os);
5529 dmu_tx_hold_zap(tx, object, B_TRUE, NULL);
5530 txg = ztest_tx_assign(tx, TXG_MIGHTWAIT, FTAG);
5532 umem_free(od, sizeof (ztest_od_t));
5535 memcpy(string_value, name, namelen);
5539 memset(string_value, 0, namelen);
5545 error = zap_length(os, object, name, &zl_wsize, &zl_wc);
5547 ASSERT3U(wsize, ==, zl_wsize);
5548 ASSERT3U(wc, ==, zl_wc);
5550 ASSERT3U(error, ==, ENOENT);
5555 error = zap_lookup(os, object, name, wsize, wc, data);
5557 if (data == string_value &&
5558 memcmp(name, data, namelen) != 0)
5559 fatal(B_FALSE, "name '%s' != val '%s' len %d",
5560 name, (char *)data, namelen);
5562 ASSERT3U(error, ==, ENOENT);
5567 error = zap_add(os, object, name, wsize, wc, data, tx);
5568 ASSERT(error == 0 || error == EEXIST);
5572 VERIFY0(zap_update(os, object, name, wsize, wc, data, tx));
5576 error = zap_remove(os, object, name, tx);
5577 ASSERT(error == 0 || error == ENOENT);
5584 umem_free(od, sizeof (ztest_od_t));
5588 * Commit callback data.
5590 typedef struct ztest_cb_data {
5591 list_node_t zcd_node;
5593 int zcd_expected_err;
5594 boolean_t zcd_added;
5595 boolean_t zcd_called;
5599 /* This is the actual commit callback function */
5601 ztest_commit_callback(void *arg, int error)
5603 ztest_cb_data_t *data = arg;
5604 uint64_t synced_txg;
5606 VERIFY3P(data, !=, NULL);
5607 VERIFY3S(data->zcd_expected_err, ==, error);
5608 VERIFY(!data->zcd_called);
5610 synced_txg = spa_last_synced_txg(data->zcd_spa);
5611 if (data->zcd_txg > synced_txg)
5613 "commit callback of txg %"PRIu64" called prematurely, "
5614 "last synced txg = %"PRIu64"\n",
5615 data->zcd_txg, synced_txg);
5617 data->zcd_called = B_TRUE;
5619 if (error == ECANCELED) {
5620 ASSERT0(data->zcd_txg);
5621 ASSERT(!data->zcd_added);
5624 * The private callback data should be destroyed here, but
5625 * since we are going to check the zcd_called field after
5626 * dmu_tx_abort(), we will destroy it there.
5631 ASSERT(data->zcd_added);
5632 ASSERT3U(data->zcd_txg, !=, 0);
5634 (void) mutex_enter(&zcl.zcl_callbacks_lock);
5636 /* See if this cb was called more quickly */
5637 if ((synced_txg - data->zcd_txg) < zc_min_txg_delay)
5638 zc_min_txg_delay = synced_txg - data->zcd_txg;
5640 /* Remove our callback from the list */
5641 list_remove(&zcl.zcl_callbacks, data);
5643 (void) mutex_exit(&zcl.zcl_callbacks_lock);
5645 umem_free(data, sizeof (ztest_cb_data_t));
5648 /* Allocate and initialize callback data structure */
5649 static ztest_cb_data_t *
5650 ztest_create_cb_data(objset_t *os, uint64_t txg)
5652 ztest_cb_data_t *cb_data;
5654 cb_data = umem_zalloc(sizeof (ztest_cb_data_t), UMEM_NOFAIL);
5656 cb_data->zcd_txg = txg;
5657 cb_data->zcd_spa = dmu_objset_spa(os);
5658 list_link_init(&cb_data->zcd_node);
5664 * Commit callback test.
5667 ztest_dmu_commit_callbacks(ztest_ds_t *zd, uint64_t id)
5669 objset_t *os = zd->zd_os;
5672 ztest_cb_data_t *cb_data[3], *tmp_cb;
5673 uint64_t old_txg, txg;
5676 od = umem_alloc(sizeof (ztest_od_t), UMEM_NOFAIL);
5677 ztest_od_init(od, id, FTAG, 0, DMU_OT_UINT64_OTHER, 0, 0, 0);
5679 if (ztest_object_init(zd, od, sizeof (ztest_od_t), B_FALSE) != 0) {
5680 umem_free(od, sizeof (ztest_od_t));
5684 tx = dmu_tx_create(os);
5686 cb_data[0] = ztest_create_cb_data(os, 0);
5687 dmu_tx_callback_register(tx, ztest_commit_callback, cb_data[0]);
5689 dmu_tx_hold_write(tx, od->od_object, 0, sizeof (uint64_t));
5691 /* Every once in a while, abort the transaction on purpose */
5692 if (ztest_random(100) == 0)
5696 error = dmu_tx_assign(tx, TXG_NOWAIT);
5698 txg = error ? 0 : dmu_tx_get_txg(tx);
5700 cb_data[0]->zcd_txg = txg;
5701 cb_data[1] = ztest_create_cb_data(os, txg);
5702 dmu_tx_callback_register(tx, ztest_commit_callback, cb_data[1]);
5706 * It's not a strict requirement to call the registered
5707 * callbacks from inside dmu_tx_abort(), but that's what
5708 * it's supposed to happen in the current implementation
5709 * so we will check for that.
5711 for (i = 0; i < 2; i++) {
5712 cb_data[i]->zcd_expected_err = ECANCELED;
5713 VERIFY(!cb_data[i]->zcd_called);
5718 for (i = 0; i < 2; i++) {
5719 VERIFY(cb_data[i]->zcd_called);
5720 umem_free(cb_data[i], sizeof (ztest_cb_data_t));
5723 umem_free(od, sizeof (ztest_od_t));
5727 cb_data[2] = ztest_create_cb_data(os, txg);
5728 dmu_tx_callback_register(tx, ztest_commit_callback, cb_data[2]);
5731 * Read existing data to make sure there isn't a future leak.
5733 VERIFY0(dmu_read(os, od->od_object, 0, sizeof (uint64_t),
5734 &old_txg, DMU_READ_PREFETCH));
5738 "future leak: got %"PRIu64", open txg is %"PRIu64"",
5741 dmu_write(os, od->od_object, 0, sizeof (uint64_t), &txg, tx);
5743 (void) mutex_enter(&zcl.zcl_callbacks_lock);
5746 * Since commit callbacks don't have any ordering requirement and since
5747 * it is theoretically possible for a commit callback to be called
5748 * after an arbitrary amount of time has elapsed since its txg has been
5749 * synced, it is difficult to reliably determine whether a commit
5750 * callback hasn't been called due to high load or due to a flawed
5753 * In practice, we will assume that if after a certain number of txgs a
5754 * commit callback hasn't been called, then most likely there's an
5755 * implementation bug..
5757 tmp_cb = list_head(&zcl.zcl_callbacks);
5758 if (tmp_cb != NULL &&
5759 tmp_cb->zcd_txg + ZTEST_COMMIT_CB_THRESH < txg) {
5761 "Commit callback threshold exceeded, "
5762 "oldest txg: %"PRIu64", open txg: %"PRIu64"\n",
5763 tmp_cb->zcd_txg, txg);
5767 * Let's find the place to insert our callbacks.
5769 * Even though the list is ordered by txg, it is possible for the
5770 * insertion point to not be the end because our txg may already be
5771 * quiescing at this point and other callbacks in the open txg
5772 * (from other objsets) may have sneaked in.
5774 tmp_cb = list_tail(&zcl.zcl_callbacks);
5775 while (tmp_cb != NULL && tmp_cb->zcd_txg > txg)
5776 tmp_cb = list_prev(&zcl.zcl_callbacks, tmp_cb);
5778 /* Add the 3 callbacks to the list */
5779 for (i = 0; i < 3; i++) {
5781 list_insert_head(&zcl.zcl_callbacks, cb_data[i]);
5783 list_insert_after(&zcl.zcl_callbacks, tmp_cb,
5786 cb_data[i]->zcd_added = B_TRUE;
5787 VERIFY(!cb_data[i]->zcd_called);
5789 tmp_cb = cb_data[i];
5794 (void) mutex_exit(&zcl.zcl_callbacks_lock);
5798 umem_free(od, sizeof (ztest_od_t));
5802 * Visit each object in the dataset. Verify that its properties
5803 * are consistent what was stored in the block tag when it was created,
5804 * and that its unused bonus buffer space has not been overwritten.
5807 ztest_verify_dnode_bt(ztest_ds_t *zd, uint64_t id)
5810 objset_t *os = zd->zd_os;
5814 for (obj = 0; err == 0; err = dmu_object_next(os, &obj, FALSE, 0)) {
5815 ztest_block_tag_t *bt = NULL;
5816 dmu_object_info_t doi;
5819 ztest_object_lock(zd, obj, RL_READER);
5820 if (dmu_bonus_hold(os, obj, FTAG, &db) != 0) {
5821 ztest_object_unlock(zd, obj);
5825 dmu_object_info_from_db(db, &doi);
5826 if (doi.doi_bonus_size >= sizeof (*bt))
5827 bt = ztest_bt_bonus(db);
5829 if (bt && bt->bt_magic == BT_MAGIC) {
5830 ztest_bt_verify(bt, os, obj, doi.doi_dnodesize,
5831 bt->bt_offset, bt->bt_gen, bt->bt_txg,
5833 ztest_verify_unused_bonus(db, bt, obj, os, bt->bt_gen);
5836 dmu_buf_rele(db, FTAG);
5837 ztest_object_unlock(zd, obj);
5842 ztest_dsl_prop_get_set(ztest_ds_t *zd, uint64_t id)
5845 zfs_prop_t proplist[] = {
5847 ZFS_PROP_COMPRESSION,
5852 (void) pthread_rwlock_rdlock(&ztest_name_lock);
5854 for (int p = 0; p < sizeof (proplist) / sizeof (proplist[0]); p++) {
5855 int error = ztest_dsl_prop_set_uint64(zd->zd_name, proplist[p],
5856 ztest_random_dsl_prop(proplist[p]), (int)ztest_random(2));
5857 ASSERT(error == 0 || error == ENOSPC);
5860 int error = ztest_dsl_prop_set_uint64(zd->zd_name, ZFS_PROP_RECORDSIZE,
5861 ztest_random_blocksize(), (int)ztest_random(2));
5862 ASSERT(error == 0 || error == ENOSPC);
5864 (void) pthread_rwlock_unlock(&ztest_name_lock);
5868 ztest_spa_prop_get_set(ztest_ds_t *zd, uint64_t id)
5870 (void) zd, (void) id;
5871 nvlist_t *props = NULL;
5873 (void) pthread_rwlock_rdlock(&ztest_name_lock);
5875 (void) ztest_spa_prop_set_uint64(ZPOOL_PROP_AUTOTRIM, ztest_random(2));
5877 VERIFY0(spa_prop_get(ztest_spa, &props));
5879 if (ztest_opts.zo_verbose >= 6)
5880 dump_nvlist(props, 4);
5882 fnvlist_free(props);
5884 (void) pthread_rwlock_unlock(&ztest_name_lock);
5888 user_release_one(const char *snapname, const char *holdname)
5890 nvlist_t *snaps, *holds;
5893 snaps = fnvlist_alloc();
5894 holds = fnvlist_alloc();
5895 fnvlist_add_boolean(holds, holdname);
5896 fnvlist_add_nvlist(snaps, snapname, holds);
5897 fnvlist_free(holds);
5898 error = dsl_dataset_user_release(snaps, NULL);
5899 fnvlist_free(snaps);
5904 * Test snapshot hold/release and deferred destroy.
5907 ztest_dmu_snapshot_hold(ztest_ds_t *zd, uint64_t id)
5910 objset_t *os = zd->zd_os;
5914 char clonename[100];
5916 char osname[ZFS_MAX_DATASET_NAME_LEN];
5919 (void) pthread_rwlock_rdlock(&ztest_name_lock);
5921 dmu_objset_name(os, osname);
5923 (void) snprintf(snapname, sizeof (snapname), "sh1_%"PRIu64"", id);
5924 (void) snprintf(fullname, sizeof (fullname), "%s@%s", osname, snapname);
5925 (void) snprintf(clonename, sizeof (clonename), "%s/ch1_%"PRIu64"",
5927 (void) snprintf(tag, sizeof (tag), "tag_%"PRIu64"", id);
5930 * Clean up from any previous run.
5932 error = dsl_destroy_head(clonename);
5933 if (error != ENOENT)
5935 error = user_release_one(fullname, tag);
5936 if (error != ESRCH && error != ENOENT)
5938 error = dsl_destroy_snapshot(fullname, B_FALSE);
5939 if (error != ENOENT)
5943 * Create snapshot, clone it, mark snap for deferred destroy,
5944 * destroy clone, verify snap was also destroyed.
5946 error = dmu_objset_snapshot_one(osname, snapname);
5948 if (error == ENOSPC) {
5949 ztest_record_enospc("dmu_objset_snapshot");
5952 fatal(B_FALSE, "dmu_objset_snapshot(%s) = %d", fullname, error);
5955 error = dmu_objset_clone(clonename, fullname);
5957 if (error == ENOSPC) {
5958 ztest_record_enospc("dmu_objset_clone");
5961 fatal(B_FALSE, "dmu_objset_clone(%s) = %d", clonename, error);
5964 error = dsl_destroy_snapshot(fullname, B_TRUE);
5966 fatal(B_FALSE, "dsl_destroy_snapshot(%s, B_TRUE) = %d",
5970 error = dsl_destroy_head(clonename);
5972 fatal(B_FALSE, "dsl_destroy_head(%s) = %d", clonename, error);
5974 error = dmu_objset_hold(fullname, FTAG, &origin);
5975 if (error != ENOENT)
5976 fatal(B_FALSE, "dmu_objset_hold(%s) = %d", fullname, error);
5979 * Create snapshot, add temporary hold, verify that we can't
5980 * destroy a held snapshot, mark for deferred destroy,
5981 * release hold, verify snapshot was destroyed.
5983 error = dmu_objset_snapshot_one(osname, snapname);
5985 if (error == ENOSPC) {
5986 ztest_record_enospc("dmu_objset_snapshot");
5989 fatal(B_FALSE, "dmu_objset_snapshot(%s) = %d", fullname, error);
5992 holds = fnvlist_alloc();
5993 fnvlist_add_string(holds, fullname, tag);
5994 error = dsl_dataset_user_hold(holds, 0, NULL);
5995 fnvlist_free(holds);
5997 if (error == ENOSPC) {
5998 ztest_record_enospc("dsl_dataset_user_hold");
6001 fatal(B_FALSE, "dsl_dataset_user_hold(%s, %s) = %u",
6002 fullname, tag, error);
6005 error = dsl_destroy_snapshot(fullname, B_FALSE);
6006 if (error != EBUSY) {
6007 fatal(B_FALSE, "dsl_destroy_snapshot(%s, B_FALSE) = %d",
6011 error = dsl_destroy_snapshot(fullname, B_TRUE);
6013 fatal(B_FALSE, "dsl_destroy_snapshot(%s, B_TRUE) = %d",
6017 error = user_release_one(fullname, tag);
6019 fatal(B_FALSE, "user_release_one(%s, %s) = %d",
6020 fullname, tag, error);
6022 VERIFY3U(dmu_objset_hold(fullname, FTAG, &origin), ==, ENOENT);
6025 (void) pthread_rwlock_unlock(&ztest_name_lock);
6029 * Inject random faults into the on-disk data.
6032 ztest_fault_inject(ztest_ds_t *zd, uint64_t id)
6034 (void) zd, (void) id;
6035 ztest_shared_t *zs = ztest_shared;
6036 spa_t *spa = ztest_spa;
6040 uint64_t bad = 0x1990c0ffeedecadeull;
6045 int bshift = SPA_MAXBLOCKSHIFT + 2;
6051 boolean_t islog = B_FALSE;
6053 path0 = umem_alloc(MAXPATHLEN, UMEM_NOFAIL);
6054 pathrand = umem_alloc(MAXPATHLEN, UMEM_NOFAIL);
6056 mutex_enter(&ztest_vdev_lock);
6059 * Device removal is in progress, fault injection must be disabled
6060 * until it completes and the pool is scrubbed. The fault injection
6061 * strategy for damaging blocks does not take in to account evacuated
6062 * blocks which may have already been damaged.
6064 if (ztest_device_removal_active) {
6065 mutex_exit(&ztest_vdev_lock);
6069 maxfaults = MAXFAULTS(zs);
6070 leaves = MAX(zs->zs_mirrors, 1) * ztest_opts.zo_raid_children;
6071 mirror_save = zs->zs_mirrors;
6072 mutex_exit(&ztest_vdev_lock);
6074 ASSERT3U(leaves, >=, 1);
6077 * While ztest is running the number of leaves will not change. This
6078 * is critical for the fault injection logic as it determines where
6079 * errors can be safely injected such that they are always repairable.
6081 * When restarting ztest a different number of leaves may be requested
6082 * which will shift the regions to be damaged. This is fine as long
6083 * as the pool has been scrubbed prior to using the new mapping.
6084 * Failure to do can result in non-repairable damage being injected.
6086 if (ztest_pool_scrubbed == B_FALSE)
6090 * Grab the name lock as reader. There are some operations
6091 * which don't like to have their vdevs changed while
6092 * they are in progress (i.e. spa_change_guid). Those
6093 * operations will have grabbed the name lock as writer.
6095 (void) pthread_rwlock_rdlock(&ztest_name_lock);
6098 * We need SCL_STATE here because we're going to look at vd0->vdev_tsd.
6100 spa_config_enter(spa, SCL_STATE, FTAG, RW_READER);
6102 if (ztest_random(2) == 0) {
6104 * Inject errors on a normal data device or slog device.
6106 top = ztest_random_vdev_top(spa, B_TRUE);
6107 leaf = ztest_random(leaves) + zs->zs_splits;
6110 * Generate paths to the first leaf in this top-level vdev,
6111 * and to the random leaf we selected. We'll induce transient
6112 * write failures and random online/offline activity on leaf 0,
6113 * and we'll write random garbage to the randomly chosen leaf.
6115 (void) snprintf(path0, MAXPATHLEN, ztest_dev_template,
6116 ztest_opts.zo_dir, ztest_opts.zo_pool,
6117 top * leaves + zs->zs_splits);
6118 (void) snprintf(pathrand, MAXPATHLEN, ztest_dev_template,
6119 ztest_opts.zo_dir, ztest_opts.zo_pool,
6120 top * leaves + leaf);
6122 vd0 = vdev_lookup_by_path(spa->spa_root_vdev, path0);
6123 if (vd0 != NULL && vd0->vdev_top->vdev_islog)
6127 * If the top-level vdev needs to be resilvered
6128 * then we only allow faults on the device that is
6131 if (vd0 != NULL && maxfaults != 1 &&
6132 (!vdev_resilver_needed(vd0->vdev_top, NULL, NULL) ||
6133 vd0->vdev_resilver_txg != 0)) {
6135 * Make vd0 explicitly claim to be unreadable,
6136 * or unwritable, or reach behind its back
6137 * and close the underlying fd. We can do this if
6138 * maxfaults == 0 because we'll fail and reexecute,
6139 * and we can do it if maxfaults >= 2 because we'll
6140 * have enough redundancy. If maxfaults == 1, the
6141 * combination of this with injection of random data
6142 * corruption below exceeds the pool's fault tolerance.
6144 vdev_file_t *vf = vd0->vdev_tsd;
6146 zfs_dbgmsg("injecting fault to vdev %llu; maxfaults=%d",
6147 (long long)vd0->vdev_id, (int)maxfaults);
6149 if (vf != NULL && ztest_random(3) == 0) {
6150 (void) close(vf->vf_file->f_fd);
6151 vf->vf_file->f_fd = -1;
6152 } else if (ztest_random(2) == 0) {
6153 vd0->vdev_cant_read = B_TRUE;
6155 vd0->vdev_cant_write = B_TRUE;
6157 guid0 = vd0->vdev_guid;
6161 * Inject errors on an l2cache device.
6163 spa_aux_vdev_t *sav = &spa->spa_l2cache;
6165 if (sav->sav_count == 0) {
6166 spa_config_exit(spa, SCL_STATE, FTAG);
6167 (void) pthread_rwlock_unlock(&ztest_name_lock);
6170 vd0 = sav->sav_vdevs[ztest_random(sav->sav_count)];
6171 guid0 = vd0->vdev_guid;
6172 (void) strlcpy(path0, vd0->vdev_path, MAXPATHLEN);
6173 (void) strlcpy(pathrand, vd0->vdev_path, MAXPATHLEN);
6177 maxfaults = INT_MAX; /* no limit on cache devices */
6180 spa_config_exit(spa, SCL_STATE, FTAG);
6181 (void) pthread_rwlock_unlock(&ztest_name_lock);
6184 * If we can tolerate two or more faults, or we're dealing
6185 * with a slog, randomly online/offline vd0.
6187 if ((maxfaults >= 2 || islog) && guid0 != 0) {
6188 if (ztest_random(10) < 6) {
6189 int flags = (ztest_random(2) == 0 ?
6190 ZFS_OFFLINE_TEMPORARY : 0);
6193 * We have to grab the zs_name_lock as writer to
6194 * prevent a race between offlining a slog and
6195 * destroying a dataset. Offlining the slog will
6196 * grab a reference on the dataset which may cause
6197 * dsl_destroy_head() to fail with EBUSY thus
6198 * leaving the dataset in an inconsistent state.
6201 (void) pthread_rwlock_wrlock(&ztest_name_lock);
6203 VERIFY3U(vdev_offline(spa, guid0, flags), !=, EBUSY);
6206 (void) pthread_rwlock_unlock(&ztest_name_lock);
6209 * Ideally we would like to be able to randomly
6210 * call vdev_[on|off]line without holding locks
6211 * to force unpredictable failures but the side
6212 * effects of vdev_[on|off]line prevent us from
6213 * doing so. We grab the ztest_vdev_lock here to
6214 * prevent a race between injection testing and
6217 mutex_enter(&ztest_vdev_lock);
6218 (void) vdev_online(spa, guid0, 0, NULL);
6219 mutex_exit(&ztest_vdev_lock);
6227 * We have at least single-fault tolerance, so inject data corruption.
6229 fd = open(pathrand, O_RDWR);
6231 if (fd == -1) /* we hit a gap in the device namespace */
6234 fsize = lseek(fd, 0, SEEK_END);
6236 while (--iters != 0) {
6238 * The offset must be chosen carefully to ensure that
6239 * we do not inject a given logical block with errors
6240 * on two different leaf devices, because ZFS can not
6241 * tolerate that (if maxfaults==1).
6243 * To achieve this we divide each leaf device into
6244 * chunks of size (# leaves * SPA_MAXBLOCKSIZE * 4).
6245 * Each chunk is further divided into error-injection
6246 * ranges (can accept errors) and clear ranges (we do
6247 * not inject errors in those). Each error-injection
6248 * range can accept errors only for a single leaf vdev.
6249 * Error-injection ranges are separated by clear ranges.
6251 * For example, with 3 leaves, each chunk looks like:
6252 * 0 to 32M: injection range for leaf 0
6253 * 32M to 64M: clear range - no injection allowed
6254 * 64M to 96M: injection range for leaf 1
6255 * 96M to 128M: clear range - no injection allowed
6256 * 128M to 160M: injection range for leaf 2
6257 * 160M to 192M: clear range - no injection allowed
6259 * Each clear range must be large enough such that a
6260 * single block cannot straddle it. This way a block
6261 * can't be a target in two different injection ranges
6262 * (on different leaf vdevs).
6264 offset = ztest_random(fsize / (leaves << bshift)) *
6265 (leaves << bshift) + (leaf << bshift) +
6266 (ztest_random(1ULL << (bshift - 1)) & -8ULL);
6269 * Only allow damage to the labels at one end of the vdev.
6271 * If all labels are damaged, the device will be totally
6272 * inaccessible, which will result in loss of data,
6273 * because we also damage (parts of) the other side of
6276 * Additionally, we will always have both an even and an
6277 * odd label, so that we can handle crashes in the
6278 * middle of vdev_config_sync().
6280 if ((leaf & 1) == 0 && offset < VDEV_LABEL_START_SIZE)
6284 * The two end labels are stored at the "end" of the disk, but
6285 * the end of the disk (vdev_psize) is aligned to
6286 * sizeof (vdev_label_t).
6288 uint64_t psize = P2ALIGN(fsize, sizeof (vdev_label_t));
6289 if ((leaf & 1) == 1 &&
6290 offset + sizeof (bad) > psize - VDEV_LABEL_END_SIZE)
6293 mutex_enter(&ztest_vdev_lock);
6294 if (mirror_save != zs->zs_mirrors) {
6295 mutex_exit(&ztest_vdev_lock);
6300 if (pwrite(fd, &bad, sizeof (bad), offset) != sizeof (bad))
6302 "can't inject bad word at 0x%"PRIx64" in %s",
6305 mutex_exit(&ztest_vdev_lock);
6307 if (ztest_opts.zo_verbose >= 7)
6308 (void) printf("injected bad word into %s,"
6309 " offset 0x%"PRIx64"\n", pathrand, offset);
6314 umem_free(path0, MAXPATHLEN);
6315 umem_free(pathrand, MAXPATHLEN);
6319 * By design ztest will never inject uncorrectable damage in to the pool.
6320 * Issue a scrub, wait for it to complete, and verify there is never any
6321 * persistent damage.
6323 * Only after a full scrub has been completed is it safe to start injecting
6324 * data corruption. See the comment in zfs_fault_inject().
6327 ztest_scrub_impl(spa_t *spa)
6329 int error = spa_scan(spa, POOL_SCAN_SCRUB);
6333 while (dsl_scan_scrubbing(spa_get_dsl(spa)))
6334 txg_wait_synced(spa_get_dsl(spa), 0);
6336 if (spa_approx_errlog_size(spa) > 0)
6339 ztest_pool_scrubbed = B_TRUE;
6348 ztest_scrub(ztest_ds_t *zd, uint64_t id)
6350 (void) zd, (void) id;
6351 spa_t *spa = ztest_spa;
6355 * Scrub in progress by device removal.
6357 if (ztest_device_removal_active)
6361 * Start a scrub, wait a moment, then force a restart.
6363 (void) spa_scan(spa, POOL_SCAN_SCRUB);
6364 (void) poll(NULL, 0, 100);
6366 error = ztest_scrub_impl(spa);
6373 * Change the guid for the pool.
6376 ztest_reguid(ztest_ds_t *zd, uint64_t id)
6378 (void) zd, (void) id;
6379 spa_t *spa = ztest_spa;
6380 uint64_t orig, load;
6383 if (ztest_opts.zo_mmp_test)
6386 orig = spa_guid(spa);
6387 load = spa_load_guid(spa);
6389 (void) pthread_rwlock_wrlock(&ztest_name_lock);
6390 error = spa_change_guid(spa);
6391 (void) pthread_rwlock_unlock(&ztest_name_lock);
6396 if (ztest_opts.zo_verbose >= 4) {
6397 (void) printf("Changed guid old %"PRIu64" -> %"PRIu64"\n",
6398 orig, spa_guid(spa));
6401 VERIFY3U(orig, !=, spa_guid(spa));
6402 VERIFY3U(load, ==, spa_load_guid(spa));
6406 ztest_blake3(ztest_ds_t *zd, uint64_t id)
6408 (void) zd, (void) id;
6409 hrtime_t end = gethrtime() + NANOSEC;
6410 zio_cksum_salt_t salt;
6411 void *salt_ptr = &salt.zcs_bytes;
6412 struct abd *abd_data, *abd_meta;
6417 const zfs_impl_t *blake3 = zfs_impl_get_ops("blake3");
6419 size = ztest_random_blocksize();
6420 buf = umem_alloc(size, UMEM_NOFAIL);
6421 abd_data = abd_alloc(size, B_FALSE);
6422 abd_meta = abd_alloc(size, B_TRUE);
6424 for (i = 0, ptr = buf; i < size / sizeof (*ptr); i++, ptr++)
6425 *ptr = ztest_random(UINT_MAX);
6426 memset(salt_ptr, 'A', 32);
6428 abd_copy_from_buf_off(abd_data, buf, 0, size);
6429 abd_copy_from_buf_off(abd_meta, buf, 0, size);
6431 while (gethrtime() <= end) {
6432 int run_count = 100;
6433 zio_cksum_t zc_ref1, zc_ref2;
6434 zio_cksum_t zc_res1, zc_res2;
6436 void *ref1 = &zc_ref1;
6437 void *ref2 = &zc_ref2;
6438 void *res1 = &zc_res1;
6439 void *res2 = &zc_res2;
6441 /* BLAKE3_KEY_LEN = 32 */
6442 VERIFY0(blake3->setname("generic"));
6443 templ = abd_checksum_blake3_tmpl_init(&salt);
6444 Blake3_InitKeyed(&ctx, salt_ptr);
6445 Blake3_Update(&ctx, buf, size);
6446 Blake3_Final(&ctx, ref1);
6448 ZIO_CHECKSUM_BSWAP(&zc_ref2);
6449 abd_checksum_blake3_tmpl_free(templ);
6451 VERIFY0(blake3->setname("cycle"));
6452 while (run_count-- > 0) {
6454 /* Test current implementation */
6455 Blake3_InitKeyed(&ctx, salt_ptr);
6456 Blake3_Update(&ctx, buf, size);
6457 Blake3_Final(&ctx, res1);
6459 ZIO_CHECKSUM_BSWAP(&zc_res2);
6461 VERIFY0(memcmp(ref1, res1, 32));
6462 VERIFY0(memcmp(ref2, res2, 32));
6464 /* Test ABD - data */
6465 templ = abd_checksum_blake3_tmpl_init(&salt);
6466 abd_checksum_blake3_native(abd_data, size,
6468 abd_checksum_blake3_byteswap(abd_data, size,
6471 VERIFY0(memcmp(ref1, res1, 32));
6472 VERIFY0(memcmp(ref2, res2, 32));
6474 /* Test ABD - metadata */
6475 abd_checksum_blake3_native(abd_meta, size,
6477 abd_checksum_blake3_byteswap(abd_meta, size,
6479 abd_checksum_blake3_tmpl_free(templ);
6481 VERIFY0(memcmp(ref1, res1, 32));
6482 VERIFY0(memcmp(ref2, res2, 32));
6489 umem_free(buf, size);
6493 ztest_fletcher(ztest_ds_t *zd, uint64_t id)
6495 (void) zd, (void) id;
6496 hrtime_t end = gethrtime() + NANOSEC;
6498 while (gethrtime() <= end) {
6499 int run_count = 100;
6501 struct abd *abd_data, *abd_meta;
6506 zio_cksum_t zc_ref_byteswap;
6508 size = ztest_random_blocksize();
6510 buf = umem_alloc(size, UMEM_NOFAIL);
6511 abd_data = abd_alloc(size, B_FALSE);
6512 abd_meta = abd_alloc(size, B_TRUE);
6514 for (i = 0, ptr = buf; i < size / sizeof (*ptr); i++, ptr++)
6515 *ptr = ztest_random(UINT_MAX);
6517 abd_copy_from_buf_off(abd_data, buf, 0, size);
6518 abd_copy_from_buf_off(abd_meta, buf, 0, size);
6520 VERIFY0(fletcher_4_impl_set("scalar"));
6521 fletcher_4_native(buf, size, NULL, &zc_ref);
6522 fletcher_4_byteswap(buf, size, NULL, &zc_ref_byteswap);
6524 VERIFY0(fletcher_4_impl_set("cycle"));
6525 while (run_count-- > 0) {
6527 zio_cksum_t zc_byteswap;
6529 fletcher_4_byteswap(buf, size, NULL, &zc_byteswap);
6530 fletcher_4_native(buf, size, NULL, &zc);
6532 VERIFY0(memcmp(&zc, &zc_ref, sizeof (zc)));
6533 VERIFY0(memcmp(&zc_byteswap, &zc_ref_byteswap,
6534 sizeof (zc_byteswap)));
6536 /* Test ABD - data */
6537 abd_fletcher_4_byteswap(abd_data, size, NULL,
6539 abd_fletcher_4_native(abd_data, size, NULL, &zc);
6541 VERIFY0(memcmp(&zc, &zc_ref, sizeof (zc)));
6542 VERIFY0(memcmp(&zc_byteswap, &zc_ref_byteswap,
6543 sizeof (zc_byteswap)));
6545 /* Test ABD - metadata */
6546 abd_fletcher_4_byteswap(abd_meta, size, NULL,
6548 abd_fletcher_4_native(abd_meta, size, NULL, &zc);
6550 VERIFY0(memcmp(&zc, &zc_ref, sizeof (zc)));
6551 VERIFY0(memcmp(&zc_byteswap, &zc_ref_byteswap,
6552 sizeof (zc_byteswap)));
6556 umem_free(buf, size);
6563 ztest_fletcher_incr(ztest_ds_t *zd, uint64_t id)
6565 (void) zd, (void) id;
6571 zio_cksum_t zc_ref_bswap;
6573 hrtime_t end = gethrtime() + NANOSEC;
6575 while (gethrtime() <= end) {
6576 int run_count = 100;
6578 size = ztest_random_blocksize();
6579 buf = umem_alloc(size, UMEM_NOFAIL);
6581 for (i = 0, ptr = buf; i < size / sizeof (*ptr); i++, ptr++)
6582 *ptr = ztest_random(UINT_MAX);
6584 VERIFY0(fletcher_4_impl_set("scalar"));
6585 fletcher_4_native(buf, size, NULL, &zc_ref);
6586 fletcher_4_byteswap(buf, size, NULL, &zc_ref_bswap);
6588 VERIFY0(fletcher_4_impl_set("cycle"));
6590 while (run_count-- > 0) {
6592 zio_cksum_t zc_bswap;
6595 ZIO_SET_CHECKSUM(&zc, 0, 0, 0, 0);
6596 ZIO_SET_CHECKSUM(&zc_bswap, 0, 0, 0, 0);
6598 while (pos < size) {
6599 size_t inc = 64 * ztest_random(size / 67);
6600 /* sometimes add few bytes to test non-simd */
6601 if (ztest_random(100) < 10)
6602 inc += P2ALIGN(ztest_random(64),
6605 if (inc > (size - pos))
6608 fletcher_4_incremental_native(buf + pos, inc,
6610 fletcher_4_incremental_byteswap(buf + pos, inc,
6616 VERIFY3U(pos, ==, size);
6618 VERIFY(ZIO_CHECKSUM_EQUAL(zc, zc_ref));
6619 VERIFY(ZIO_CHECKSUM_EQUAL(zc_bswap, zc_ref_bswap));
6622 * verify if incremental on the whole buffer is
6623 * equivalent to non-incremental version
6625 ZIO_SET_CHECKSUM(&zc, 0, 0, 0, 0);
6626 ZIO_SET_CHECKSUM(&zc_bswap, 0, 0, 0, 0);
6628 fletcher_4_incremental_native(buf, size, &zc);
6629 fletcher_4_incremental_byteswap(buf, size, &zc_bswap);
6631 VERIFY(ZIO_CHECKSUM_EQUAL(zc, zc_ref));
6632 VERIFY(ZIO_CHECKSUM_EQUAL(zc_bswap, zc_ref_bswap));
6635 umem_free(buf, size);
6640 ztest_set_global_vars(void)
6642 for (size_t i = 0; i < ztest_opts.zo_gvars_count; i++) {
6643 char *kv = ztest_opts.zo_gvars[i];
6644 VERIFY3U(strlen(kv), <=, ZO_GVARS_MAX_ARGLEN);
6645 VERIFY3U(strlen(kv), >, 0);
6646 int err = set_global_var(kv);
6647 if (ztest_opts.zo_verbose > 0) {
6648 (void) printf("setting global var %s ... %s\n", kv,
6649 err ? "failed" : "ok");
6652 (void) fprintf(stderr,
6653 "failed to set global var '%s'\n", kv);
6661 ztest_global_vars_to_zdb_args(void)
6663 char **args = calloc(2*ztest_opts.zo_gvars_count + 1, sizeof (char *));
6667 for (size_t i = 0; i < ztest_opts.zo_gvars_count; i++) {
6668 *cur++ = (char *)"-o";
6669 *cur++ = ztest_opts.zo_gvars[i];
6671 ASSERT3P(cur, ==, &args[2*ztest_opts.zo_gvars_count]);
6676 /* The end of strings is indicated by a NULL element */
6678 join_strings(char **strings, const char *sep)
6680 size_t totallen = 0;
6681 for (char **sp = strings; *sp != NULL; sp++) {
6682 totallen += strlen(*sp);
6683 totallen += strlen(sep);
6686 ASSERT(totallen >= strlen(sep));
6687 totallen -= strlen(sep);
6690 size_t buflen = totallen + 1;
6691 char *o = umem_alloc(buflen, UMEM_NOFAIL); /* trailing 0 byte */
6693 for (char **sp = strings; *sp != NULL; sp++) {
6695 would = strlcat(o, *sp, buflen);
6696 VERIFY3U(would, <, buflen);
6697 if (*(sp+1) == NULL) {
6700 would = strlcat(o, sep, buflen);
6701 VERIFY3U(would, <, buflen);
6703 ASSERT3S(strlen(o), ==, totallen);
6708 ztest_check_path(char *path)
6711 /* return true on success */
6712 return (!stat(path, &s));
6716 ztest_get_zdb_bin(char *bin, int len)
6720 * Try to use $ZDB and in-tree zdb path. If not successful, just
6721 * let popen to search through PATH.
6723 if ((zdb_path = getenv("ZDB"))) {
6724 strlcpy(bin, zdb_path, len); /* In env */
6725 if (!ztest_check_path(bin)) {
6726 ztest_dump_core = 0;
6727 fatal(B_TRUE, "invalid ZDB '%s'", bin);
6732 VERIFY3P(realpath(getexecname(), bin), !=, NULL);
6733 if (strstr(bin, ".libs/ztest")) {
6734 strstr(bin, ".libs/ztest")[0] = '\0'; /* In-tree */
6736 if (ztest_check_path(bin))
6743 ztest_random_concrete_vdev_leaf(vdev_t *vd)
6748 if (vd->vdev_children == 0)
6751 vdev_t *eligible[vd->vdev_children];
6752 int eligible_idx = 0, i;
6753 for (i = 0; i < vd->vdev_children; i++) {
6754 vdev_t *cvd = vd->vdev_child[i];
6755 if (cvd->vdev_top->vdev_removing)
6757 if (cvd->vdev_children > 0 ||
6758 (vdev_is_concrete(cvd) && !cvd->vdev_detached)) {
6759 eligible[eligible_idx++] = cvd;
6762 VERIFY3S(eligible_idx, >, 0);
6764 uint64_t child_no = ztest_random(eligible_idx);
6765 return (ztest_random_concrete_vdev_leaf(eligible[child_no]));
6769 ztest_initialize(ztest_ds_t *zd, uint64_t id)
6771 (void) zd, (void) id;
6772 spa_t *spa = ztest_spa;
6775 mutex_enter(&ztest_vdev_lock);
6777 spa_config_enter(spa, SCL_VDEV, FTAG, RW_READER);
6779 /* Random leaf vdev */
6780 vdev_t *rand_vd = ztest_random_concrete_vdev_leaf(spa->spa_root_vdev);
6781 if (rand_vd == NULL) {
6782 spa_config_exit(spa, SCL_VDEV, FTAG);
6783 mutex_exit(&ztest_vdev_lock);
6788 * The random vdev we've selected may change as soon as we
6789 * drop the spa_config_lock. We create local copies of things
6790 * we're interested in.
6792 uint64_t guid = rand_vd->vdev_guid;
6793 char *path = strdup(rand_vd->vdev_path);
6794 boolean_t active = rand_vd->vdev_initialize_thread != NULL;
6796 zfs_dbgmsg("vd %px, guid %llu", rand_vd, (u_longlong_t)guid);
6797 spa_config_exit(spa, SCL_VDEV, FTAG);
6799 uint64_t cmd = ztest_random(POOL_INITIALIZE_FUNCS);
6801 nvlist_t *vdev_guids = fnvlist_alloc();
6802 nvlist_t *vdev_errlist = fnvlist_alloc();
6803 fnvlist_add_uint64(vdev_guids, path, guid);
6804 error = spa_vdev_initialize(spa, vdev_guids, cmd, vdev_errlist);
6805 fnvlist_free(vdev_guids);
6806 fnvlist_free(vdev_errlist);
6809 case POOL_INITIALIZE_CANCEL:
6810 if (ztest_opts.zo_verbose >= 4) {
6811 (void) printf("Cancel initialize %s", path);
6813 (void) printf(" failed (no initialize active)");
6814 (void) printf("\n");
6817 case POOL_INITIALIZE_START:
6818 if (ztest_opts.zo_verbose >= 4) {
6819 (void) printf("Start initialize %s", path);
6820 if (active && error == 0)
6821 (void) printf(" failed (already active)");
6822 else if (error != 0)
6823 (void) printf(" failed (error %d)", error);
6824 (void) printf("\n");
6827 case POOL_INITIALIZE_SUSPEND:
6828 if (ztest_opts.zo_verbose >= 4) {
6829 (void) printf("Suspend initialize %s", path);
6831 (void) printf(" failed (no initialize active)");
6832 (void) printf("\n");
6837 mutex_exit(&ztest_vdev_lock);
6841 ztest_trim(ztest_ds_t *zd, uint64_t id)
6843 (void) zd, (void) id;
6844 spa_t *spa = ztest_spa;
6847 mutex_enter(&ztest_vdev_lock);
6849 spa_config_enter(spa, SCL_VDEV, FTAG, RW_READER);
6851 /* Random leaf vdev */
6852 vdev_t *rand_vd = ztest_random_concrete_vdev_leaf(spa->spa_root_vdev);
6853 if (rand_vd == NULL) {
6854 spa_config_exit(spa, SCL_VDEV, FTAG);
6855 mutex_exit(&ztest_vdev_lock);
6860 * The random vdev we've selected may change as soon as we
6861 * drop the spa_config_lock. We create local copies of things
6862 * we're interested in.
6864 uint64_t guid = rand_vd->vdev_guid;
6865 char *path = strdup(rand_vd->vdev_path);
6866 boolean_t active = rand_vd->vdev_trim_thread != NULL;
6868 zfs_dbgmsg("vd %p, guid %llu", rand_vd, (u_longlong_t)guid);
6869 spa_config_exit(spa, SCL_VDEV, FTAG);
6871 uint64_t cmd = ztest_random(POOL_TRIM_FUNCS);
6872 uint64_t rate = 1 << ztest_random(30);
6873 boolean_t partial = (ztest_random(5) > 0);
6874 boolean_t secure = (ztest_random(5) > 0);
6876 nvlist_t *vdev_guids = fnvlist_alloc();
6877 nvlist_t *vdev_errlist = fnvlist_alloc();
6878 fnvlist_add_uint64(vdev_guids, path, guid);
6879 error = spa_vdev_trim(spa, vdev_guids, cmd, rate, partial,
6880 secure, vdev_errlist);
6881 fnvlist_free(vdev_guids);
6882 fnvlist_free(vdev_errlist);
6885 case POOL_TRIM_CANCEL:
6886 if (ztest_opts.zo_verbose >= 4) {
6887 (void) printf("Cancel TRIM %s", path);
6889 (void) printf(" failed (no TRIM active)");
6890 (void) printf("\n");
6893 case POOL_TRIM_START:
6894 if (ztest_opts.zo_verbose >= 4) {
6895 (void) printf("Start TRIM %s", path);
6896 if (active && error == 0)
6897 (void) printf(" failed (already active)");
6898 else if (error != 0)
6899 (void) printf(" failed (error %d)", error);
6900 (void) printf("\n");
6903 case POOL_TRIM_SUSPEND:
6904 if (ztest_opts.zo_verbose >= 4) {
6905 (void) printf("Suspend TRIM %s", path);
6907 (void) printf(" failed (no TRIM active)");
6908 (void) printf("\n");
6913 mutex_exit(&ztest_vdev_lock);
6917 * Verify pool integrity by running zdb.
6920 ztest_run_zdb(const char *pool)
6926 const int len = MAXPATHLEN + MAXNAMELEN + 20;
6929 bin = umem_alloc(len, UMEM_NOFAIL);
6930 zdb = umem_alloc(len, UMEM_NOFAIL);
6931 zbuf = umem_alloc(1024, UMEM_NOFAIL);
6933 ztest_get_zdb_bin(bin, len);
6935 char **set_gvars_args = ztest_global_vars_to_zdb_args();
6936 if (set_gvars_args == NULL) {
6937 fatal(B_FALSE, "Failed to allocate memory in "
6938 "ztest_global_vars_to_zdb_args(). Cannot run zdb.\n");
6940 char *set_gvars_args_joined = join_strings(set_gvars_args, " ");
6941 free(set_gvars_args);
6943 size_t would = snprintf(zdb, len,
6944 "%s -bcc%s%s -G -d -Y -e -y %s -p %s %s",
6946 ztest_opts.zo_verbose >= 3 ? "s" : "",
6947 ztest_opts.zo_verbose >= 4 ? "v" : "",
6948 set_gvars_args_joined,
6951 ASSERT3U(would, <, len);
6953 umem_free(set_gvars_args_joined, strlen(set_gvars_args_joined) + 1);
6955 if (ztest_opts.zo_verbose >= 5)
6956 (void) printf("Executing %s\n", zdb);
6958 fp = popen(zdb, "r");
6960 while (fgets(zbuf, 1024, fp) != NULL)
6961 if (ztest_opts.zo_verbose >= 3)
6962 (void) printf("%s", zbuf);
6964 status = pclose(fp);
6969 ztest_dump_core = 0;
6970 if (WIFEXITED(status))
6971 fatal(B_FALSE, "'%s' exit code %d", zdb, WEXITSTATUS(status));
6973 fatal(B_FALSE, "'%s' died with signal %d",
6974 zdb, WTERMSIG(status));
6976 umem_free(bin, len);
6977 umem_free(zdb, len);
6978 umem_free(zbuf, 1024);
6982 ztest_walk_pool_directory(const char *header)
6986 if (ztest_opts.zo_verbose >= 6)
6987 (void) puts(header);
6989 mutex_enter(&spa_namespace_lock);
6990 while ((spa = spa_next(spa)) != NULL)
6991 if (ztest_opts.zo_verbose >= 6)
6992 (void) printf("\t%s\n", spa_name(spa));
6993 mutex_exit(&spa_namespace_lock);
6997 ztest_spa_import_export(char *oldname, char *newname)
6999 nvlist_t *config, *newconfig;
7004 if (ztest_opts.zo_verbose >= 4) {
7005 (void) printf("import/export: old = %s, new = %s\n",
7010 * Clean up from previous runs.
7012 (void) spa_destroy(newname);
7015 * Get the pool's configuration and guid.
7017 VERIFY0(spa_open(oldname, &spa, FTAG));
7020 * Kick off a scrub to tickle scrub/export races.
7022 if (ztest_random(2) == 0)
7023 (void) spa_scan(spa, POOL_SCAN_SCRUB);
7025 pool_guid = spa_guid(spa);
7026 spa_close(spa, FTAG);
7028 ztest_walk_pool_directory("pools before export");
7033 VERIFY0(spa_export(oldname, &config, B_FALSE, B_FALSE));
7035 ztest_walk_pool_directory("pools after export");
7040 newconfig = spa_tryimport(config);
7041 ASSERT3P(newconfig, !=, NULL);
7042 fnvlist_free(newconfig);
7045 * Import it under the new name.
7047 error = spa_import(newname, config, NULL, 0);
7049 dump_nvlist(config, 0);
7050 fatal(B_FALSE, "couldn't import pool %s as %s: error %u",
7051 oldname, newname, error);
7054 ztest_walk_pool_directory("pools after import");
7057 * Try to import it again -- should fail with EEXIST.
7059 VERIFY3U(EEXIST, ==, spa_import(newname, config, NULL, 0));
7062 * Try to import it under a different name -- should fail with EEXIST.
7064 VERIFY3U(EEXIST, ==, spa_import(oldname, config, NULL, 0));
7067 * Verify that the pool is no longer visible under the old name.
7069 VERIFY3U(ENOENT, ==, spa_open(oldname, &spa, FTAG));
7072 * Verify that we can open and close the pool using the new name.
7074 VERIFY0(spa_open(newname, &spa, FTAG));
7075 ASSERT3U(pool_guid, ==, spa_guid(spa));
7076 spa_close(spa, FTAG);
7078 fnvlist_free(config);
7082 ztest_resume(spa_t *spa)
7084 if (spa_suspended(spa) && ztest_opts.zo_verbose >= 6)
7085 (void) printf("resuming from suspended state\n");
7086 spa_vdev_state_enter(spa, SCL_NONE);
7087 vdev_clear(spa, NULL);
7088 (void) spa_vdev_state_exit(spa, NULL, 0);
7089 (void) zio_resume(spa);
7092 static __attribute__((noreturn)) void
7093 ztest_resume_thread(void *arg)
7097 while (!ztest_exiting) {
7098 if (spa_suspended(spa))
7100 (void) poll(NULL, 0, 100);
7103 * Periodically change the zfs_compressed_arc_enabled setting.
7105 if (ztest_random(10) == 0)
7106 zfs_compressed_arc_enabled = ztest_random(2);
7109 * Periodically change the zfs_abd_scatter_enabled setting.
7111 if (ztest_random(10) == 0)
7112 zfs_abd_scatter_enabled = ztest_random(2);
7118 static __attribute__((noreturn)) void
7119 ztest_deadman_thread(void *arg)
7121 ztest_shared_t *zs = arg;
7122 spa_t *spa = ztest_spa;
7123 hrtime_t delay, overdue, last_run = gethrtime();
7125 delay = (zs->zs_thread_stop - zs->zs_thread_start) +
7126 MSEC2NSEC(zfs_deadman_synctime_ms);
7128 while (!ztest_exiting) {
7130 * Wait for the delay timer while checking occasionally
7131 * if we should stop.
7133 if (gethrtime() < last_run + delay) {
7134 (void) poll(NULL, 0, 1000);
7139 * If the pool is suspended then fail immediately. Otherwise,
7140 * check to see if the pool is making any progress. If
7141 * vdev_deadman() discovers that there hasn't been any recent
7142 * I/Os then it will end up aborting the tests.
7144 if (spa_suspended(spa) || spa->spa_root_vdev == NULL) {
7146 "aborting test after %llu seconds because "
7147 "pool has transitioned to a suspended state.",
7148 (u_longlong_t)zfs_deadman_synctime_ms / 1000);
7150 vdev_deadman(spa->spa_root_vdev, FTAG);
7153 * If the process doesn't complete within a grace period of
7154 * zfs_deadman_synctime_ms over the expected finish time,
7155 * then it may be hung and is terminated.
7157 overdue = zs->zs_proc_stop + MSEC2NSEC(zfs_deadman_synctime_ms);
7158 if (gethrtime() > overdue) {
7160 "aborting test after %llu seconds because "
7161 "the process is overdue for termination.",
7162 (gethrtime() - zs->zs_proc_start) / NANOSEC);
7165 (void) printf("ztest has been running for %lld seconds\n",
7166 (gethrtime() - zs->zs_proc_start) / NANOSEC);
7168 last_run = gethrtime();
7169 delay = MSEC2NSEC(zfs_deadman_checktime_ms);
7176 ztest_execute(int test, ztest_info_t *zi, uint64_t id)
7178 ztest_ds_t *zd = &ztest_ds[id % ztest_opts.zo_datasets];
7179 ztest_shared_callstate_t *zc = ZTEST_GET_SHARED_CALLSTATE(test);
7180 hrtime_t functime = gethrtime();
7183 for (i = 0; i < zi->zi_iters; i++)
7184 zi->zi_func(zd, id);
7186 functime = gethrtime() - functime;
7188 atomic_add_64(&zc->zc_count, 1);
7189 atomic_add_64(&zc->zc_time, functime);
7191 if (ztest_opts.zo_verbose >= 4)
7192 (void) printf("%6.2f sec in %s\n",
7193 (double)functime / NANOSEC, zi->zi_funcname);
7196 static __attribute__((noreturn)) void
7197 ztest_thread(void *arg)
7200 uint64_t id = (uintptr_t)arg;
7201 ztest_shared_t *zs = ztest_shared;
7205 ztest_shared_callstate_t *zc;
7207 while ((now = gethrtime()) < zs->zs_thread_stop) {
7209 * See if it's time to force a crash.
7211 if (now > zs->zs_thread_kill)
7215 * If we're getting ENOSPC with some regularity, stop.
7217 if (zs->zs_enospc_count > 10)
7221 * Pick a random function to execute.
7223 rand = ztest_random(ZTEST_FUNCS);
7224 zi = &ztest_info[rand];
7225 zc = ZTEST_GET_SHARED_CALLSTATE(rand);
7226 call_next = zc->zc_next;
7228 if (now >= call_next &&
7229 atomic_cas_64(&zc->zc_next, call_next, call_next +
7230 ztest_random(2 * zi->zi_interval[0] + 1)) == call_next) {
7231 ztest_execute(rand, zi, id);
7239 ztest_dataset_name(char *dsname, const char *pool, int d)
7241 (void) snprintf(dsname, ZFS_MAX_DATASET_NAME_LEN, "%s/ds_%d", pool, d);
7245 ztest_dataset_destroy(int d)
7247 char name[ZFS_MAX_DATASET_NAME_LEN];
7250 ztest_dataset_name(name, ztest_opts.zo_pool, d);
7252 if (ztest_opts.zo_verbose >= 3)
7253 (void) printf("Destroying %s to free up space\n", name);
7256 * Cleanup any non-standard clones and snapshots. In general,
7257 * ztest thread t operates on dataset (t % zopt_datasets),
7258 * so there may be more than one thing to clean up.
7260 for (t = d; t < ztest_opts.zo_threads;
7261 t += ztest_opts.zo_datasets)
7262 ztest_dsl_dataset_cleanup(name, t);
7264 (void) dmu_objset_find(name, ztest_objset_destroy_cb, NULL,
7265 DS_FIND_SNAPSHOTS | DS_FIND_CHILDREN);
7269 ztest_dataset_dirobj_verify(ztest_ds_t *zd)
7271 uint64_t usedobjs, dirobjs, scratch;
7274 * ZTEST_DIROBJ is the object directory for the entire dataset.
7275 * Therefore, the number of objects in use should equal the
7276 * number of ZTEST_DIROBJ entries, +1 for ZTEST_DIROBJ itself.
7277 * If not, we have an object leak.
7279 * Note that we can only check this in ztest_dataset_open(),
7280 * when the open-context and syncing-context values agree.
7281 * That's because zap_count() returns the open-context value,
7282 * while dmu_objset_space() returns the rootbp fill count.
7284 VERIFY0(zap_count(zd->zd_os, ZTEST_DIROBJ, &dirobjs));
7285 dmu_objset_space(zd->zd_os, &scratch, &scratch, &usedobjs, &scratch);
7286 ASSERT3U(dirobjs + 1, ==, usedobjs);
7290 ztest_dataset_open(int d)
7292 ztest_ds_t *zd = &ztest_ds[d];
7293 uint64_t committed_seq = ZTEST_GET_SHARED_DS(d)->zd_seq;
7296 char name[ZFS_MAX_DATASET_NAME_LEN];
7299 ztest_dataset_name(name, ztest_opts.zo_pool, d);
7301 (void) pthread_rwlock_rdlock(&ztest_name_lock);
7303 error = ztest_dataset_create(name);
7304 if (error == ENOSPC) {
7305 (void) pthread_rwlock_unlock(&ztest_name_lock);
7306 ztest_record_enospc(FTAG);
7309 ASSERT(error == 0 || error == EEXIST);
7311 VERIFY0(ztest_dmu_objset_own(name, DMU_OST_OTHER, B_FALSE,
7313 (void) pthread_rwlock_unlock(&ztest_name_lock);
7315 ztest_zd_init(zd, ZTEST_GET_SHARED_DS(d), os);
7317 zilog = zd->zd_zilog;
7319 if (zilog->zl_header->zh_claim_lr_seq != 0 &&
7320 zilog->zl_header->zh_claim_lr_seq < committed_seq)
7321 fatal(B_FALSE, "missing log records: "
7322 "claimed %"PRIu64" < committed %"PRIu64"",
7323 zilog->zl_header->zh_claim_lr_seq, committed_seq);
7325 ztest_dataset_dirobj_verify(zd);
7327 zil_replay(os, zd, ztest_replay_vector);
7329 ztest_dataset_dirobj_verify(zd);
7331 if (ztest_opts.zo_verbose >= 6)
7332 (void) printf("%s replay %"PRIu64" blocks, "
7333 "%"PRIu64" records, seq %"PRIu64"\n",
7335 zilog->zl_parse_blk_count,
7336 zilog->zl_parse_lr_count,
7337 zilog->zl_replaying_seq);
7339 zilog = zil_open(os, ztest_get_data, NULL);
7341 if (zilog->zl_replaying_seq != 0 &&
7342 zilog->zl_replaying_seq < committed_seq)
7343 fatal(B_FALSE, "missing log records: "
7344 "replayed %"PRIu64" < committed %"PRIu64"",
7345 zilog->zl_replaying_seq, committed_seq);
7351 ztest_dataset_close(int d)
7353 ztest_ds_t *zd = &ztest_ds[d];
7355 zil_close(zd->zd_zilog);
7356 dmu_objset_disown(zd->zd_os, B_TRUE, zd);
7362 ztest_replay_zil_cb(const char *name, void *arg)
7368 VERIFY0(ztest_dmu_objset_own(name, DMU_OST_ANY, B_TRUE,
7369 B_TRUE, FTAG, &os));
7371 zdtmp = umem_alloc(sizeof (ztest_ds_t), UMEM_NOFAIL);
7373 ztest_zd_init(zdtmp, NULL, os);
7374 zil_replay(os, zdtmp, ztest_replay_vector);
7375 ztest_zd_fini(zdtmp);
7377 if (dmu_objset_zil(os)->zl_parse_lr_count != 0 &&
7378 ztest_opts.zo_verbose >= 6) {
7379 zilog_t *zilog = dmu_objset_zil(os);
7381 (void) printf("%s replay %"PRIu64" blocks, "
7382 "%"PRIu64" records, seq %"PRIu64"\n",
7384 zilog->zl_parse_blk_count,
7385 zilog->zl_parse_lr_count,
7386 zilog->zl_replaying_seq);
7389 umem_free(zdtmp, sizeof (ztest_ds_t));
7391 dmu_objset_disown(os, B_TRUE, FTAG);
7398 ztest_ds_t *zd = &ztest_ds[0];
7402 if (ztest_opts.zo_verbose >= 3)
7403 (void) printf("testing spa_freeze()...\n");
7405 kernel_init(SPA_MODE_READ | SPA_MODE_WRITE);
7406 VERIFY0(spa_open(ztest_opts.zo_pool, &spa, FTAG));
7407 VERIFY0(ztest_dataset_open(0));
7411 * Force the first log block to be transactionally allocated.
7412 * We have to do this before we freeze the pool -- otherwise
7413 * the log chain won't be anchored.
7415 while (BP_IS_HOLE(&zd->zd_zilog->zl_header->zh_log)) {
7416 ztest_dmu_object_alloc_free(zd, 0);
7417 zil_commit(zd->zd_zilog, 0);
7420 txg_wait_synced(spa_get_dsl(spa), 0);
7423 * Freeze the pool. This stops spa_sync() from doing anything,
7424 * so that the only way to record changes from now on is the ZIL.
7429 * Because it is hard to predict how much space a write will actually
7430 * require beforehand, we leave ourselves some fudge space to write over
7433 uint64_t capacity = metaslab_class_get_space(spa_normal_class(spa)) / 2;
7436 * Run tests that generate log records but don't alter the pool config
7437 * or depend on DSL sync tasks (snapshots, objset create/destroy, etc).
7438 * We do a txg_wait_synced() after each iteration to force the txg
7439 * to increase well beyond the last synced value in the uberblock.
7440 * The ZIL should be OK with that.
7442 * Run a random number of times less than zo_maxloops and ensure we do
7443 * not run out of space on the pool.
7445 while (ztest_random(10) != 0 &&
7446 numloops++ < ztest_opts.zo_maxloops &&
7447 metaslab_class_get_alloc(spa_normal_class(spa)) < capacity) {
7449 ztest_od_init(&od, 0, FTAG, 0, DMU_OT_UINT64_OTHER, 0, 0, 0);
7450 VERIFY0(ztest_object_init(zd, &od, sizeof (od), B_FALSE));
7451 ztest_io(zd, od.od_object,
7452 ztest_random(ZTEST_RANGE_LOCKS) << SPA_MAXBLOCKSHIFT);
7453 txg_wait_synced(spa_get_dsl(spa), 0);
7457 * Commit all of the changes we just generated.
7459 zil_commit(zd->zd_zilog, 0);
7460 txg_wait_synced(spa_get_dsl(spa), 0);
7463 * Close our dataset and close the pool.
7465 ztest_dataset_close(0);
7466 spa_close(spa, FTAG);
7470 * Open and close the pool and dataset to induce log replay.
7472 kernel_init(SPA_MODE_READ | SPA_MODE_WRITE);
7473 VERIFY0(spa_open(ztest_opts.zo_pool, &spa, FTAG));
7474 ASSERT3U(spa_freeze_txg(spa), ==, UINT64_MAX);
7475 VERIFY0(ztest_dataset_open(0));
7477 txg_wait_synced(spa_get_dsl(spa), 0);
7478 ztest_dataset_close(0);
7479 ztest_reguid(NULL, 0);
7481 spa_close(spa, FTAG);
7486 ztest_import_impl(void)
7488 importargs_t args = { 0 };
7489 nvlist_t *cfg = NULL;
7491 char *searchdirs[nsearch];
7492 int flags = ZFS_IMPORT_MISSING_LOG;
7494 searchdirs[0] = ztest_opts.zo_dir;
7495 args.paths = nsearch;
7496 args.path = searchdirs;
7497 args.can_be_active = B_FALSE;
7499 libpc_handle_t lpch = {
7500 .lpc_lib_handle = NULL,
7501 .lpc_ops = &libzpool_config_ops,
7502 .lpc_printerr = B_TRUE
7504 VERIFY0(zpool_find_config(&lpch, ztest_opts.zo_pool, &cfg, &args));
7505 VERIFY0(spa_import(ztest_opts.zo_pool, cfg, NULL, flags));
7510 * Import a storage pool with the given name.
7513 ztest_import(ztest_shared_t *zs)
7517 mutex_init(&ztest_vdev_lock, NULL, MUTEX_DEFAULT, NULL);
7518 mutex_init(&ztest_checkpoint_lock, NULL, MUTEX_DEFAULT, NULL);
7519 VERIFY0(pthread_rwlock_init(&ztest_name_lock, NULL));
7521 kernel_init(SPA_MODE_READ | SPA_MODE_WRITE);
7523 ztest_import_impl();
7525 VERIFY0(spa_open(ztest_opts.zo_pool, &spa, FTAG));
7526 zs->zs_metaslab_sz =
7527 1ULL << spa->spa_root_vdev->vdev_child[0]->vdev_ms_shift;
7528 spa_close(spa, FTAG);
7532 if (!ztest_opts.zo_mmp_test) {
7533 ztest_run_zdb(ztest_opts.zo_pool);
7535 ztest_run_zdb(ztest_opts.zo_pool);
7538 (void) pthread_rwlock_destroy(&ztest_name_lock);
7539 mutex_destroy(&ztest_vdev_lock);
7540 mutex_destroy(&ztest_checkpoint_lock);
7544 * Kick off threads to run tests on all datasets in parallel.
7547 ztest_run(ztest_shared_t *zs)
7551 kthread_t *resume_thread, *deadman_thread;
7552 kthread_t **run_threads;
7557 ztest_exiting = B_FALSE;
7560 * Initialize parent/child shared state.
7562 mutex_init(&ztest_vdev_lock, NULL, MUTEX_DEFAULT, NULL);
7563 mutex_init(&ztest_checkpoint_lock, NULL, MUTEX_DEFAULT, NULL);
7564 VERIFY0(pthread_rwlock_init(&ztest_name_lock, NULL));
7566 zs->zs_thread_start = gethrtime();
7567 zs->zs_thread_stop =
7568 zs->zs_thread_start + ztest_opts.zo_passtime * NANOSEC;
7569 zs->zs_thread_stop = MIN(zs->zs_thread_stop, zs->zs_proc_stop);
7570 zs->zs_thread_kill = zs->zs_thread_stop;
7571 if (ztest_random(100) < ztest_opts.zo_killrate) {
7572 zs->zs_thread_kill -=
7573 ztest_random(ztest_opts.zo_passtime * NANOSEC);
7576 mutex_init(&zcl.zcl_callbacks_lock, NULL, MUTEX_DEFAULT, NULL);
7578 list_create(&zcl.zcl_callbacks, sizeof (ztest_cb_data_t),
7579 offsetof(ztest_cb_data_t, zcd_node));
7582 * Open our pool. It may need to be imported first depending on
7583 * what tests were running when the previous pass was terminated.
7585 kernel_init(SPA_MODE_READ | SPA_MODE_WRITE);
7586 error = spa_open(ztest_opts.zo_pool, &spa, FTAG);
7588 VERIFY3S(error, ==, ENOENT);
7589 ztest_import_impl();
7590 VERIFY0(spa_open(ztest_opts.zo_pool, &spa, FTAG));
7591 zs->zs_metaslab_sz =
7592 1ULL << spa->spa_root_vdev->vdev_child[0]->vdev_ms_shift;
7595 metaslab_preload_limit = ztest_random(20) + 1;
7598 VERIFY0(vdev_raidz_impl_set("cycle"));
7600 dmu_objset_stats_t dds;
7601 VERIFY0(ztest_dmu_objset_own(ztest_opts.zo_pool,
7602 DMU_OST_ANY, B_TRUE, B_TRUE, FTAG, &os));
7603 dsl_pool_config_enter(dmu_objset_pool(os), FTAG);
7604 dmu_objset_fast_stat(os, &dds);
7605 dsl_pool_config_exit(dmu_objset_pool(os), FTAG);
7606 zs->zs_guid = dds.dds_guid;
7607 dmu_objset_disown(os, B_TRUE, FTAG);
7610 * Create a thread to periodically resume suspended I/O.
7612 resume_thread = thread_create(NULL, 0, ztest_resume_thread,
7613 spa, 0, NULL, TS_RUN | TS_JOINABLE, defclsyspri);
7616 * Create a deadman thread and set to panic if we hang.
7618 deadman_thread = thread_create(NULL, 0, ztest_deadman_thread,
7619 zs, 0, NULL, TS_RUN | TS_JOINABLE, defclsyspri);
7621 spa->spa_deadman_failmode = ZIO_FAILURE_MODE_PANIC;
7624 * Verify that we can safely inquire about any object,
7625 * whether it's allocated or not. To make it interesting,
7626 * we probe a 5-wide window around each power of two.
7627 * This hits all edge cases, including zero and the max.
7629 for (t = 0; t < 64; t++) {
7630 for (d = -5; d <= 5; d++) {
7631 error = dmu_object_info(spa->spa_meta_objset,
7632 (1ULL << t) + d, NULL);
7633 ASSERT(error == 0 || error == ENOENT ||
7639 * If we got any ENOSPC errors on the previous run, destroy something.
7641 if (zs->zs_enospc_count != 0) {
7642 int d = ztest_random(ztest_opts.zo_datasets);
7643 ztest_dataset_destroy(d);
7645 zs->zs_enospc_count = 0;
7648 * If we were in the middle of ztest_device_removal() and were killed
7649 * we need to ensure the removal and scrub complete before running
7650 * any tests that check ztest_device_removal_active. The removal will
7651 * be restarted automatically when the spa is opened, but we need to
7652 * initiate the scrub manually if it is not already in progress. Note
7653 * that we always run the scrub whenever an indirect vdev exists
7654 * because we have no way of knowing for sure if ztest_device_removal()
7655 * fully completed its scrub before the pool was reimported.
7657 if (spa->spa_removing_phys.sr_state == DSS_SCANNING ||
7658 spa->spa_removing_phys.sr_prev_indirect_vdev != -1) {
7659 while (spa->spa_removing_phys.sr_state == DSS_SCANNING)
7660 txg_wait_synced(spa_get_dsl(spa), 0);
7662 error = ztest_scrub_impl(spa);
7668 run_threads = umem_zalloc(ztest_opts.zo_threads * sizeof (kthread_t *),
7671 if (ztest_opts.zo_verbose >= 4)
7672 (void) printf("starting main threads...\n");
7675 * Replay all logs of all datasets in the pool. This is primarily for
7676 * temporary datasets which wouldn't otherwise get replayed, which
7677 * can trigger failures when attempting to offline a SLOG in
7678 * ztest_fault_inject().
7680 (void) dmu_objset_find(ztest_opts.zo_pool, ztest_replay_zil_cb,
7681 NULL, DS_FIND_CHILDREN);
7684 * Kick off all the tests that run in parallel.
7686 for (t = 0; t < ztest_opts.zo_threads; t++) {
7687 if (t < ztest_opts.zo_datasets && ztest_dataset_open(t) != 0) {
7688 umem_free(run_threads, ztest_opts.zo_threads *
7689 sizeof (kthread_t *));
7693 run_threads[t] = thread_create(NULL, 0, ztest_thread,
7694 (void *)(uintptr_t)t, 0, NULL, TS_RUN | TS_JOINABLE,
7699 * Wait for all of the tests to complete.
7701 for (t = 0; t < ztest_opts.zo_threads; t++)
7702 VERIFY0(thread_join(run_threads[t]));
7705 * Close all datasets. This must be done after all the threads
7706 * are joined so we can be sure none of the datasets are in-use
7707 * by any of the threads.
7709 for (t = 0; t < ztest_opts.zo_threads; t++) {
7710 if (t < ztest_opts.zo_datasets)
7711 ztest_dataset_close(t);
7714 txg_wait_synced(spa_get_dsl(spa), 0);
7716 zs->zs_alloc = metaslab_class_get_alloc(spa_normal_class(spa));
7717 zs->zs_space = metaslab_class_get_space(spa_normal_class(spa));
7719 umem_free(run_threads, ztest_opts.zo_threads * sizeof (kthread_t *));
7721 /* Kill the resume and deadman threads */
7722 ztest_exiting = B_TRUE;
7723 VERIFY0(thread_join(resume_thread));
7724 VERIFY0(thread_join(deadman_thread));
7728 * Right before closing the pool, kick off a bunch of async I/O;
7729 * spa_close() should wait for it to complete.
7731 for (object = 1; object < 50; object++) {
7732 dmu_prefetch(spa->spa_meta_objset, object, 0, 0, 1ULL << 20,
7733 ZIO_PRIORITY_SYNC_READ);
7736 /* Verify that at least one commit cb was called in a timely fashion */
7737 if (zc_cb_counter >= ZTEST_COMMIT_CB_MIN_REG)
7738 VERIFY0(zc_min_txg_delay);
7740 spa_close(spa, FTAG);
7743 * Verify that we can loop over all pools.
7745 mutex_enter(&spa_namespace_lock);
7746 for (spa = spa_next(NULL); spa != NULL; spa = spa_next(spa))
7747 if (ztest_opts.zo_verbose > 3)
7748 (void) printf("spa_next: found %s\n", spa_name(spa));
7749 mutex_exit(&spa_namespace_lock);
7752 * Verify that we can export the pool and reimport it under a
7755 if ((ztest_random(2) == 0) && !ztest_opts.zo_mmp_test) {
7756 char name[ZFS_MAX_DATASET_NAME_LEN];
7757 (void) snprintf(name, sizeof (name), "%s_import",
7758 ztest_opts.zo_pool);
7759 ztest_spa_import_export(ztest_opts.zo_pool, name);
7760 ztest_spa_import_export(name, ztest_opts.zo_pool);
7765 list_destroy(&zcl.zcl_callbacks);
7766 mutex_destroy(&zcl.zcl_callbacks_lock);
7767 (void) pthread_rwlock_destroy(&ztest_name_lock);
7768 mutex_destroy(&ztest_vdev_lock);
7769 mutex_destroy(&ztest_checkpoint_lock);
7773 print_time(hrtime_t t, char *timebuf)
7775 hrtime_t s = t / NANOSEC;
7776 hrtime_t m = s / 60;
7777 hrtime_t h = m / 60;
7778 hrtime_t d = h / 24;
7787 (void) sprintf(timebuf,
7788 "%llud%02lluh%02llum%02llus", d, h, m, s);
7790 (void) sprintf(timebuf, "%lluh%02llum%02llus", h, m, s);
7792 (void) sprintf(timebuf, "%llum%02llus", m, s);
7794 (void) sprintf(timebuf, "%llus", s);
7798 make_random_props(void)
7802 props = fnvlist_alloc();
7804 if (ztest_random(2) == 0)
7807 fnvlist_add_uint64(props,
7808 zpool_prop_to_name(ZPOOL_PROP_AUTOREPLACE), 1);
7814 * Create a storage pool with the given name and initial vdev size.
7815 * Then test spa_freeze() functionality.
7818 ztest_init(ztest_shared_t *zs)
7821 nvlist_t *nvroot, *props;
7824 mutex_init(&ztest_vdev_lock, NULL, MUTEX_DEFAULT, NULL);
7825 mutex_init(&ztest_checkpoint_lock, NULL, MUTEX_DEFAULT, NULL);
7826 VERIFY0(pthread_rwlock_init(&ztest_name_lock, NULL));
7828 kernel_init(SPA_MODE_READ | SPA_MODE_WRITE);
7831 * Create the storage pool.
7833 (void) spa_destroy(ztest_opts.zo_pool);
7834 ztest_shared->zs_vdev_next_leaf = 0;
7836 zs->zs_mirrors = ztest_opts.zo_mirrors;
7837 nvroot = make_vdev_root(NULL, NULL, NULL, ztest_opts.zo_vdev_size, 0,
7838 NULL, ztest_opts.zo_raid_children, zs->zs_mirrors, 1);
7839 props = make_random_props();
7842 * We don't expect the pool to suspend unless maxfaults == 0,
7843 * in which case ztest_fault_inject() temporarily takes away
7844 * the only valid replica.
7846 fnvlist_add_uint64(props,
7847 zpool_prop_to_name(ZPOOL_PROP_FAILUREMODE),
7848 MAXFAULTS(zs) ? ZIO_FAILURE_MODE_PANIC : ZIO_FAILURE_MODE_WAIT);
7850 for (i = 0; i < SPA_FEATURES; i++) {
7853 if (!spa_feature_table[i].fi_zfs_mod_supported)
7857 * 75% chance of using the log space map feature. We want ztest
7858 * to exercise both the code paths that use the log space map
7859 * feature and the ones that don't.
7861 if (i == SPA_FEATURE_LOG_SPACEMAP && ztest_random(4) == 0)
7864 VERIFY3S(-1, !=, asprintf(&buf, "feature@%s",
7865 spa_feature_table[i].fi_uname));
7866 fnvlist_add_uint64(props, buf, 0);
7870 VERIFY0(spa_create(ztest_opts.zo_pool, nvroot, props, NULL, NULL));
7871 fnvlist_free(nvroot);
7872 fnvlist_free(props);
7874 VERIFY0(spa_open(ztest_opts.zo_pool, &spa, FTAG));
7875 zs->zs_metaslab_sz =
7876 1ULL << spa->spa_root_vdev->vdev_child[0]->vdev_ms_shift;
7877 spa_close(spa, FTAG);
7881 if (!ztest_opts.zo_mmp_test) {
7882 ztest_run_zdb(ztest_opts.zo_pool);
7884 ztest_run_zdb(ztest_opts.zo_pool);
7887 (void) pthread_rwlock_destroy(&ztest_name_lock);
7888 mutex_destroy(&ztest_vdev_lock);
7889 mutex_destroy(&ztest_checkpoint_lock);
7895 static char ztest_name_data[] = "/tmp/ztest.data.XXXXXX";
7897 ztest_fd_data = mkstemp(ztest_name_data);
7898 ASSERT3S(ztest_fd_data, >=, 0);
7899 (void) unlink(ztest_name_data);
7903 shared_data_size(ztest_shared_hdr_t *hdr)
7907 size = hdr->zh_hdr_size;
7908 size += hdr->zh_opts_size;
7909 size += hdr->zh_size;
7910 size += hdr->zh_stats_size * hdr->zh_stats_count;
7911 size += hdr->zh_ds_size * hdr->zh_ds_count;
7920 ztest_shared_hdr_t *hdr;
7922 hdr = (void *)mmap(0, P2ROUNDUP(sizeof (*hdr), getpagesize()),
7923 PROT_READ | PROT_WRITE, MAP_SHARED, ztest_fd_data, 0);
7924 ASSERT3P(hdr, !=, MAP_FAILED);
7926 VERIFY0(ftruncate(ztest_fd_data, sizeof (ztest_shared_hdr_t)));
7928 hdr->zh_hdr_size = sizeof (ztest_shared_hdr_t);
7929 hdr->zh_opts_size = sizeof (ztest_shared_opts_t);
7930 hdr->zh_size = sizeof (ztest_shared_t);
7931 hdr->zh_stats_size = sizeof (ztest_shared_callstate_t);
7932 hdr->zh_stats_count = ZTEST_FUNCS;
7933 hdr->zh_ds_size = sizeof (ztest_shared_ds_t);
7934 hdr->zh_ds_count = ztest_opts.zo_datasets;
7936 size = shared_data_size(hdr);
7937 VERIFY0(ftruncate(ztest_fd_data, size));
7939 (void) munmap((caddr_t)hdr, P2ROUNDUP(sizeof (*hdr), getpagesize()));
7946 ztest_shared_hdr_t *hdr;
7949 hdr = (void *)mmap(0, P2ROUNDUP(sizeof (*hdr), getpagesize()),
7950 PROT_READ, MAP_SHARED, ztest_fd_data, 0);
7951 ASSERT3P(hdr, !=, MAP_FAILED);
7953 size = shared_data_size(hdr);
7955 (void) munmap((caddr_t)hdr, P2ROUNDUP(sizeof (*hdr), getpagesize()));
7956 hdr = ztest_shared_hdr = (void *)mmap(0, P2ROUNDUP(size, getpagesize()),
7957 PROT_READ | PROT_WRITE, MAP_SHARED, ztest_fd_data, 0);
7958 ASSERT3P(hdr, !=, MAP_FAILED);
7959 buf = (uint8_t *)hdr;
7961 offset = hdr->zh_hdr_size;
7962 ztest_shared_opts = (void *)&buf[offset];
7963 offset += hdr->zh_opts_size;
7964 ztest_shared = (void *)&buf[offset];
7965 offset += hdr->zh_size;
7966 ztest_shared_callstate = (void *)&buf[offset];
7967 offset += hdr->zh_stats_size * hdr->zh_stats_count;
7968 ztest_shared_ds = (void *)&buf[offset];
7972 exec_child(char *cmd, char *libpath, boolean_t ignorekill, int *statusp)
7976 char *cmdbuf = NULL;
7981 cmdbuf = umem_alloc(MAXPATHLEN, UMEM_NOFAIL);
7982 (void) strlcpy(cmdbuf, getexecname(), MAXPATHLEN);
7987 fatal(B_TRUE, "fork failed");
7989 if (pid == 0) { /* child */
7990 char fd_data_str[12];
7993 snprintf(fd_data_str, 12, "%d", ztest_fd_data));
7994 VERIFY0(setenv("ZTEST_FD_DATA", fd_data_str, 1));
7996 if (libpath != NULL) {
7997 const char *curlp = getenv("LD_LIBRARY_PATH");
7999 VERIFY0(setenv("LD_LIBRARY_PATH", libpath, 1));
8003 asprintf(&newlp, "%s:%s", libpath, curlp));
8004 VERIFY0(setenv("LD_LIBRARY_PATH", newlp, 1));
8008 (void) execl(cmd, cmd, (char *)NULL);
8009 ztest_dump_core = B_FALSE;
8010 fatal(B_TRUE, "exec failed: %s", cmd);
8013 if (cmdbuf != NULL) {
8014 umem_free(cmdbuf, MAXPATHLEN);
8018 while (waitpid(pid, &status, 0) != pid)
8020 if (statusp != NULL)
8023 if (WIFEXITED(status)) {
8024 if (WEXITSTATUS(status) != 0) {
8025 (void) fprintf(stderr, "child exited with code %d\n",
8026 WEXITSTATUS(status));
8030 } else if (WIFSIGNALED(status)) {
8031 if (!ignorekill || WTERMSIG(status) != SIGKILL) {
8032 (void) fprintf(stderr, "child died with signal %d\n",
8038 (void) fprintf(stderr, "something strange happened to child\n");
8044 ztest_run_init(void)
8048 ztest_shared_t *zs = ztest_shared;
8051 * Blow away any existing copy of zpool.cache
8053 (void) remove(spa_config_path);
8055 if (ztest_opts.zo_init == 0) {
8056 if (ztest_opts.zo_verbose >= 1)
8057 (void) printf("Importing pool %s\n",
8058 ztest_opts.zo_pool);
8064 * Create and initialize our storage pool.
8066 for (i = 1; i <= ztest_opts.zo_init; i++) {
8067 memset(zs, 0, sizeof (*zs));
8068 if (ztest_opts.zo_verbose >= 3 &&
8069 ztest_opts.zo_init != 1) {
8070 (void) printf("ztest_init(), pass %d\n", i);
8077 main(int argc, char **argv)
8085 ztest_shared_callstate_t *zc;
8087 char numbuf[NN_NUMBUF_SZ];
8091 char *fd_data_str = getenv("ZTEST_FD_DATA");
8092 struct sigaction action;
8094 (void) setvbuf(stdout, NULL, _IOLBF, 0);
8096 dprintf_setup(&argc, argv);
8097 zfs_deadman_synctime_ms = 300000;
8098 zfs_deadman_checktime_ms = 30000;
8100 * As two-word space map entries may not come up often (especially
8101 * if pool and vdev sizes are small) we want to force at least some
8102 * of them so the feature get tested.
8104 zfs_force_some_double_word_sm_entries = B_TRUE;
8107 * Verify that even extensively damaged split blocks with many
8108 * segments can be reconstructed in a reasonable amount of time
8109 * when reconstruction is known to be possible.
8111 * Note: the lower this value is, the more damage we inflict, and
8112 * the more time ztest spends in recovering that damage. We chose
8113 * to induce damage 1/100th of the time so recovery is tested but
8114 * not so frequently that ztest doesn't get to test other code paths.
8116 zfs_reconstruct_indirect_damage_fraction = 100;
8118 action.sa_handler = sig_handler;
8119 sigemptyset(&action.sa_mask);
8120 action.sa_flags = 0;
8122 if (sigaction(SIGSEGV, &action, NULL) < 0) {
8123 (void) fprintf(stderr, "ztest: cannot catch SIGSEGV: %s.\n",
8128 if (sigaction(SIGABRT, &action, NULL) < 0) {
8129 (void) fprintf(stderr, "ztest: cannot catch SIGABRT: %s.\n",
8135 * Force random_get_bytes() to use /dev/urandom in order to prevent
8136 * ztest from needlessly depleting the system entropy pool.
8138 random_path = "/dev/urandom";
8139 ztest_fd_rand = open(random_path, O_RDONLY | O_CLOEXEC);
8140 ASSERT3S(ztest_fd_rand, >=, 0);
8143 process_options(argc, argv);
8148 memcpy(ztest_shared_opts, &ztest_opts,
8149 sizeof (*ztest_shared_opts));
8151 ztest_fd_data = atoi(fd_data_str);
8153 memcpy(&ztest_opts, ztest_shared_opts, sizeof (ztest_opts));
8155 ASSERT3U(ztest_opts.zo_datasets, ==, ztest_shared_hdr->zh_ds_count);
8157 err = ztest_set_global_vars();
8158 if (err != 0 && !fd_data_str) {
8159 /* error message done by ztest_set_global_vars */
8162 /* children should not be spawned if setting gvars fails */
8163 VERIFY3S(err, ==, 0);
8166 /* Override location of zpool.cache */
8167 VERIFY3S(asprintf((char **)&spa_config_path, "%s/zpool.cache",
8168 ztest_opts.zo_dir), !=, -1);
8170 ztest_ds = umem_alloc(ztest_opts.zo_datasets * sizeof (ztest_ds_t),
8175 metaslab_force_ganging = ztest_opts.zo_metaslab_force_ganging;
8176 metaslab_df_alloc_threshold =
8177 zs->zs_metaslab_df_alloc_threshold;
8186 hasalt = (strlen(ztest_opts.zo_alt_ztest) != 0);
8188 if (ztest_opts.zo_verbose >= 1) {
8189 (void) printf("%"PRIu64" vdevs, %d datasets, %d threads,"
8190 "%d %s disks, %"PRIu64" seconds...\n\n",
8191 ztest_opts.zo_vdevs,
8192 ztest_opts.zo_datasets,
8193 ztest_opts.zo_threads,
8194 ztest_opts.zo_raid_children,
8195 ztest_opts.zo_raid_type,
8196 ztest_opts.zo_time);
8199 cmd = umem_alloc(MAXNAMELEN, UMEM_NOFAIL);
8200 (void) strlcpy(cmd, getexecname(), MAXNAMELEN);
8202 zs->zs_do_init = B_TRUE;
8203 if (strlen(ztest_opts.zo_alt_ztest) != 0) {
8204 if (ztest_opts.zo_verbose >= 1) {
8205 (void) printf("Executing older ztest for "
8206 "initialization: %s\n", ztest_opts.zo_alt_ztest);
8208 VERIFY(!exec_child(ztest_opts.zo_alt_ztest,
8209 ztest_opts.zo_alt_libpath, B_FALSE, NULL));
8211 VERIFY(!exec_child(NULL, NULL, B_FALSE, NULL));
8213 zs->zs_do_init = B_FALSE;
8215 zs->zs_proc_start = gethrtime();
8216 zs->zs_proc_stop = zs->zs_proc_start + ztest_opts.zo_time * NANOSEC;
8218 for (f = 0; f < ZTEST_FUNCS; f++) {
8219 zi = &ztest_info[f];
8220 zc = ZTEST_GET_SHARED_CALLSTATE(f);
8221 if (zs->zs_proc_start + zi->zi_interval[0] > zs->zs_proc_stop)
8222 zc->zc_next = UINT64_MAX;
8224 zc->zc_next = zs->zs_proc_start +
8225 ztest_random(2 * zi->zi_interval[0] + 1);
8229 * Run the tests in a loop. These tests include fault injection
8230 * to verify that self-healing data works, and forced crashes
8231 * to verify that we never lose on-disk consistency.
8233 while (gethrtime() < zs->zs_proc_stop) {
8238 * Initialize the workload counters for each function.
8240 for (f = 0; f < ZTEST_FUNCS; f++) {
8241 zc = ZTEST_GET_SHARED_CALLSTATE(f);
8246 /* Set the allocation switch size */
8247 zs->zs_metaslab_df_alloc_threshold =
8248 ztest_random(zs->zs_metaslab_sz / 4) + 1;
8250 if (!hasalt || ztest_random(2) == 0) {
8251 if (hasalt && ztest_opts.zo_verbose >= 1) {
8252 (void) printf("Executing newer ztest: %s\n",
8256 killed = exec_child(cmd, NULL, B_TRUE, &status);
8258 if (hasalt && ztest_opts.zo_verbose >= 1) {
8259 (void) printf("Executing older ztest: %s\n",
8260 ztest_opts.zo_alt_ztest);
8263 killed = exec_child(ztest_opts.zo_alt_ztest,
8264 ztest_opts.zo_alt_libpath, B_TRUE, &status);
8271 if (ztest_opts.zo_verbose >= 1) {
8272 hrtime_t now = gethrtime();
8274 now = MIN(now, zs->zs_proc_stop);
8275 print_time(zs->zs_proc_stop - now, timebuf);
8276 nicenum(zs->zs_space, numbuf, sizeof (numbuf));
8278 (void) printf("Pass %3d, %8s, %3"PRIu64" ENOSPC, "
8279 "%4.1f%% of %5s used, %3.0f%% done, %8s to go\n",
8281 WIFEXITED(status) ? "Complete" : "SIGKILL",
8282 zs->zs_enospc_count,
8283 100.0 * zs->zs_alloc / zs->zs_space,
8285 100.0 * (now - zs->zs_proc_start) /
8286 (ztest_opts.zo_time * NANOSEC), timebuf);
8289 if (ztest_opts.zo_verbose >= 2) {
8290 (void) printf("\nWorkload summary:\n\n");
8291 (void) printf("%7s %9s %s\n",
8292 "Calls", "Time", "Function");
8293 (void) printf("%7s %9s %s\n",
8294 "-----", "----", "--------");
8295 for (f = 0; f < ZTEST_FUNCS; f++) {
8296 zi = &ztest_info[f];
8297 zc = ZTEST_GET_SHARED_CALLSTATE(f);
8298 print_time(zc->zc_time, timebuf);
8299 (void) printf("%7"PRIu64" %9s %s\n",
8300 zc->zc_count, timebuf,
8303 (void) printf("\n");
8306 if (!ztest_opts.zo_mmp_test)
8307 ztest_run_zdb(ztest_opts.zo_pool);
8310 if (ztest_opts.zo_verbose >= 1) {
8312 (void) printf("%d runs of older ztest: %s\n", older,
8313 ztest_opts.zo_alt_ztest);
8314 (void) printf("%d runs of newer ztest: %s\n", newer,
8317 (void) printf("%d killed, %d completed, %.0f%% kill rate\n",
8318 kills, iters - kills, (100.0 * kills) / MAX(1, iters));
8321 umem_free(cmd, MAXNAMELEN);