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 http://www.opensolaris.org/os/licensing.
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) 2013 by Delphix. All rights reserved.
24 * Copyright 2011 Nexenta Systems, Inc. All rights reserved.
25 * Copyright (c) 2012 Martin Matuska <mm@FreeBSD.org>. All rights reserved.
26 * Copyright (c) 2013 Steven Hartland. All rights reserved.
30 * The objective of this program is to provide a DMU/ZAP/SPA stress test
31 * that runs entirely in userland, is easy to use, and easy to extend.
33 * The overall design of the ztest program is as follows:
35 * (1) For each major functional area (e.g. adding vdevs to a pool,
36 * creating and destroying datasets, reading and writing objects, etc)
37 * we have a simple routine to test that functionality. These
38 * individual routines do not have to do anything "stressful".
40 * (2) We turn these simple functionality tests into a stress test by
41 * running them all in parallel, with as many threads as desired,
42 * and spread across as many datasets, objects, and vdevs as desired.
44 * (3) While all this is happening, we inject faults into the pool to
45 * verify that self-healing data really works.
47 * (4) Every time we open a dataset, we change its checksum and compression
48 * functions. Thus even individual objects vary from block to block
49 * in which checksum they use and whether they're compressed.
51 * (5) To verify that we never lose on-disk consistency after a crash,
52 * we run the entire test in a child of the main process.
53 * At random times, the child self-immolates with a SIGKILL.
54 * This is the software equivalent of pulling the power cord.
55 * The parent then runs the test again, using the existing
56 * storage pool, as many times as desired. If backwards compatibility
57 * testing is enabled ztest will sometimes run the "older" version
58 * of ztest after a SIGKILL.
60 * (6) To verify that we don't have future leaks or temporal incursions,
61 * many of the functional tests record the transaction group number
62 * as part of their data. When reading old data, they verify that
63 * the transaction group number is less than the current, open txg.
64 * If you add a new test, please do this if applicable.
66 * When run with no arguments, ztest runs for about five minutes and
67 * produces no output if successful. To get a little bit of information,
68 * specify -V. To get more information, specify -VV, and so on.
70 * To turn this into an overnight stress test, use -T to specify run time.
72 * You can ask more more vdevs [-v], datasets [-d], or threads [-t]
73 * to increase the pool capacity, fanout, and overall stress level.
75 * Use the -k option to set the desired frequency of kills.
77 * When ztest invokes itself it passes all relevant information through a
78 * temporary file which is mmap-ed in the child process. This allows shared
79 * memory to survive the exec syscall. The ztest_shared_hdr_t struct is always
80 * stored at offset 0 of this file and contains information on the size and
81 * number of shared structures in the file. The information stored in this file
82 * must remain backwards compatible with older versions of ztest so that
83 * ztest can invoke them during backwards compatibility testing (-B).
86 #include <sys/zfs_context.h>
92 #include <sys/dmu_objset.h>
98 #include <sys/resource.h>
101 #include <sys/zil_impl.h>
102 #include <sys/vdev_impl.h>
103 #include <sys/vdev_file.h>
104 #include <sys/spa_impl.h>
105 #include <sys/metaslab_impl.h>
106 #include <sys/dsl_prop.h>
107 #include <sys/dsl_dataset.h>
108 #include <sys/dsl_destroy.h>
109 #include <sys/dsl_scan.h>
110 #include <sys/zio_checksum.h>
111 #include <sys/refcount.h>
112 #include <sys/zfeature.h>
113 #include <sys/dsl_userhold.h>
115 #include <stdio_ext.h>
124 #include <sys/fs/zfs.h>
125 #include <libnvpair.h>
127 static int ztest_fd_data = -1;
128 static int ztest_fd_rand = -1;
130 typedef struct ztest_shared_hdr {
131 uint64_t zh_hdr_size;
132 uint64_t zh_opts_size;
134 uint64_t zh_stats_size;
135 uint64_t zh_stats_count;
137 uint64_t zh_ds_count;
138 } ztest_shared_hdr_t;
140 static ztest_shared_hdr_t *ztest_shared_hdr;
142 typedef struct ztest_shared_opts {
143 char zo_pool[MAXNAMELEN];
144 char zo_dir[MAXNAMELEN];
145 char zo_alt_ztest[MAXNAMELEN];
146 char zo_alt_libpath[MAXNAMELEN];
148 uint64_t zo_vdevtime;
156 uint64_t zo_passtime;
157 uint64_t zo_killrate;
161 uint64_t zo_maxloops;
162 uint64_t zo_metaslab_gang_bang;
163 } ztest_shared_opts_t;
165 static const ztest_shared_opts_t ztest_opts_defaults = {
166 .zo_pool = { 'z', 't', 'e', 's', 't', '\0' },
167 .zo_dir = { '/', 't', 'm', 'p', '\0' },
168 .zo_alt_ztest = { '\0' },
169 .zo_alt_libpath = { '\0' },
171 .zo_ashift = SPA_MINBLOCKSHIFT,
174 .zo_raidz_parity = 1,
175 .zo_vdev_size = SPA_MINDEVSIZE,
178 .zo_passtime = 60, /* 60 seconds */
179 .zo_killrate = 70, /* 70% kill rate */
182 .zo_time = 300, /* 5 minutes */
183 .zo_maxloops = 50, /* max loops during spa_freeze() */
184 .zo_metaslab_gang_bang = 32 << 10
187 extern uint64_t metaslab_gang_bang;
188 extern uint64_t metaslab_df_alloc_threshold;
189 extern uint64_t zfs_deadman_synctime_ms;
191 static ztest_shared_opts_t *ztest_shared_opts;
192 static ztest_shared_opts_t ztest_opts;
194 typedef struct ztest_shared_ds {
198 static ztest_shared_ds_t *ztest_shared_ds;
199 #define ZTEST_GET_SHARED_DS(d) (&ztest_shared_ds[d])
201 #define BT_MAGIC 0x123456789abcdefULL
202 #define MAXFAULTS() \
203 (MAX(zs->zs_mirrors, 1) * (ztest_opts.zo_raidz_parity + 1) - 1)
207 ZTEST_IO_WRITE_PATTERN,
208 ZTEST_IO_WRITE_ZEROES,
215 typedef struct ztest_block_tag {
225 typedef struct bufwad {
232 * XXX -- fix zfs range locks to be generic so we can use them here.
254 #define ZTEST_RANGE_LOCKS 64
255 #define ZTEST_OBJECT_LOCKS 64
258 * Object descriptor. Used as a template for object lookup/create/remove.
260 typedef struct ztest_od {
263 dmu_object_type_t od_type;
264 dmu_object_type_t od_crtype;
265 uint64_t od_blocksize;
266 uint64_t od_crblocksize;
269 char od_name[MAXNAMELEN];
275 typedef struct ztest_ds {
276 ztest_shared_ds_t *zd_shared;
278 rwlock_t zd_zilog_lock;
280 ztest_od_t *zd_od; /* debugging aid */
281 char zd_name[MAXNAMELEN];
282 mutex_t zd_dirobj_lock;
283 rll_t zd_object_lock[ZTEST_OBJECT_LOCKS];
284 rll_t zd_range_lock[ZTEST_RANGE_LOCKS];
288 * Per-iteration state.
290 typedef void ztest_func_t(ztest_ds_t *zd, uint64_t id);
292 typedef struct ztest_info {
293 ztest_func_t *zi_func; /* test function */
294 uint64_t zi_iters; /* iterations per execution */
295 uint64_t *zi_interval; /* execute every <interval> seconds */
298 typedef struct ztest_shared_callstate {
299 uint64_t zc_count; /* per-pass count */
300 uint64_t zc_time; /* per-pass time */
301 uint64_t zc_next; /* next time to call this function */
302 } ztest_shared_callstate_t;
304 static ztest_shared_callstate_t *ztest_shared_callstate;
305 #define ZTEST_GET_SHARED_CALLSTATE(c) (&ztest_shared_callstate[c])
308 * Note: these aren't static because we want dladdr() to work.
310 ztest_func_t ztest_dmu_read_write;
311 ztest_func_t ztest_dmu_write_parallel;
312 ztest_func_t ztest_dmu_object_alloc_free;
313 ztest_func_t ztest_dmu_commit_callbacks;
314 ztest_func_t ztest_zap;
315 ztest_func_t ztest_zap_parallel;
316 ztest_func_t ztest_zil_commit;
317 ztest_func_t ztest_zil_remount;
318 ztest_func_t ztest_dmu_read_write_zcopy;
319 ztest_func_t ztest_dmu_objset_create_destroy;
320 ztest_func_t ztest_dmu_prealloc;
321 ztest_func_t ztest_fzap;
322 ztest_func_t ztest_dmu_snapshot_create_destroy;
323 ztest_func_t ztest_dsl_prop_get_set;
324 ztest_func_t ztest_spa_prop_get_set;
325 ztest_func_t ztest_spa_create_destroy;
326 ztest_func_t ztest_fault_inject;
327 ztest_func_t ztest_ddt_repair;
328 ztest_func_t ztest_dmu_snapshot_hold;
329 ztest_func_t ztest_spa_rename;
330 ztest_func_t ztest_scrub;
331 ztest_func_t ztest_dsl_dataset_promote_busy;
332 ztest_func_t ztest_vdev_attach_detach;
333 ztest_func_t ztest_vdev_LUN_growth;
334 ztest_func_t ztest_vdev_add_remove;
335 ztest_func_t ztest_vdev_aux_add_remove;
336 ztest_func_t ztest_split_pool;
337 ztest_func_t ztest_reguid;
338 ztest_func_t ztest_spa_upgrade;
340 uint64_t zopt_always = 0ULL * NANOSEC; /* all the time */
341 uint64_t zopt_incessant = 1ULL * NANOSEC / 10; /* every 1/10 second */
342 uint64_t zopt_often = 1ULL * NANOSEC; /* every second */
343 uint64_t zopt_sometimes = 10ULL * NANOSEC; /* every 10 seconds */
344 uint64_t zopt_rarely = 60ULL * NANOSEC; /* every 60 seconds */
346 ztest_info_t ztest_info[] = {
347 { ztest_dmu_read_write, 1, &zopt_always },
348 { ztest_dmu_write_parallel, 10, &zopt_always },
349 { ztest_dmu_object_alloc_free, 1, &zopt_always },
350 { ztest_dmu_commit_callbacks, 1, &zopt_always },
351 { ztest_zap, 30, &zopt_always },
352 { ztest_zap_parallel, 100, &zopt_always },
353 { ztest_split_pool, 1, &zopt_always },
354 { ztest_zil_commit, 1, &zopt_incessant },
355 { ztest_zil_remount, 1, &zopt_sometimes },
356 { ztest_dmu_read_write_zcopy, 1, &zopt_often },
357 { ztest_dmu_objset_create_destroy, 1, &zopt_often },
358 { ztest_dsl_prop_get_set, 1, &zopt_often },
359 { ztest_spa_prop_get_set, 1, &zopt_sometimes },
361 { ztest_dmu_prealloc, 1, &zopt_sometimes },
363 { ztest_fzap, 1, &zopt_sometimes },
364 { ztest_dmu_snapshot_create_destroy, 1, &zopt_sometimes },
365 { ztest_spa_create_destroy, 1, &zopt_sometimes },
366 { ztest_fault_inject, 1, &zopt_sometimes },
367 { ztest_ddt_repair, 1, &zopt_sometimes },
368 { ztest_dmu_snapshot_hold, 1, &zopt_sometimes },
369 { ztest_reguid, 1, &zopt_rarely },
370 { ztest_spa_rename, 1, &zopt_rarely },
371 { ztest_scrub, 1, &zopt_rarely },
372 { ztest_spa_upgrade, 1, &zopt_rarely },
373 { ztest_dsl_dataset_promote_busy, 1, &zopt_rarely },
374 { ztest_vdev_attach_detach, 1, &zopt_sometimes },
375 { ztest_vdev_LUN_growth, 1, &zopt_rarely },
376 { ztest_vdev_add_remove, 1,
377 &ztest_opts.zo_vdevtime },
378 { ztest_vdev_aux_add_remove, 1,
379 &ztest_opts.zo_vdevtime },
382 #define ZTEST_FUNCS (sizeof (ztest_info) / sizeof (ztest_info_t))
385 * The following struct is used to hold a list of uncalled commit callbacks.
386 * The callbacks are ordered by txg number.
388 typedef struct ztest_cb_list {
389 mutex_t zcl_callbacks_lock;
390 list_t zcl_callbacks;
394 * Stuff we need to share writably between parent and child.
396 typedef struct ztest_shared {
397 boolean_t zs_do_init;
398 hrtime_t zs_proc_start;
399 hrtime_t zs_proc_stop;
400 hrtime_t zs_thread_start;
401 hrtime_t zs_thread_stop;
402 hrtime_t zs_thread_kill;
403 uint64_t zs_enospc_count;
404 uint64_t zs_vdev_next_leaf;
405 uint64_t zs_vdev_aux;
410 uint64_t zs_metaslab_sz;
411 uint64_t zs_metaslab_df_alloc_threshold;
415 #define ID_PARALLEL -1ULL
417 static char ztest_dev_template[] = "%s/%s.%llua";
418 static char ztest_aux_template[] = "%s/%s.%s.%llu";
419 ztest_shared_t *ztest_shared;
421 static spa_t *ztest_spa = NULL;
422 static ztest_ds_t *ztest_ds;
424 static mutex_t ztest_vdev_lock;
427 * The ztest_name_lock protects the pool and dataset namespace used by
428 * the individual tests. To modify the namespace, consumers must grab
429 * this lock as writer. Grabbing the lock as reader will ensure that the
430 * namespace does not change while the lock is held.
432 static rwlock_t ztest_name_lock;
434 static boolean_t ztest_dump_core = B_TRUE;
435 static boolean_t ztest_exiting;
437 /* Global commit callback list */
438 static ztest_cb_list_t zcl;
441 ZTEST_META_DNODE = 0,
446 static void usage(boolean_t) __NORETURN;
449 * These libumem hooks provide a reasonable set of defaults for the allocator's
450 * debugging facilities.
455 return ("default,verbose"); /* $UMEM_DEBUG setting */
459 _umem_logging_init(void)
461 return ("fail,contents"); /* $UMEM_LOGGING setting */
464 #define FATAL_MSG_SZ 1024
469 fatal(int do_perror, char *message, ...)
472 int save_errno = errno;
473 char buf[FATAL_MSG_SZ];
475 (void) fflush(stdout);
477 va_start(args, message);
478 (void) sprintf(buf, "ztest: ");
480 (void) vsprintf(buf + strlen(buf), message, args);
483 (void) snprintf(buf + strlen(buf), FATAL_MSG_SZ - strlen(buf),
484 ": %s", strerror(save_errno));
486 (void) fprintf(stderr, "%s\n", buf);
487 fatal_msg = buf; /* to ease debugging */
494 str2shift(const char *buf)
496 const char *ends = "BKMGTPEZ";
501 for (i = 0; i < strlen(ends); i++) {
502 if (toupper(buf[0]) == ends[i])
505 if (i == strlen(ends)) {
506 (void) fprintf(stderr, "ztest: invalid bytes suffix: %s\n",
510 if (buf[1] == '\0' || (toupper(buf[1]) == 'B' && buf[2] == '\0')) {
513 (void) fprintf(stderr, "ztest: invalid bytes suffix: %s\n", buf);
519 nicenumtoull(const char *buf)
524 val = strtoull(buf, &end, 0);
526 (void) fprintf(stderr, "ztest: bad numeric value: %s\n", buf);
528 } else if (end[0] == '.') {
529 double fval = strtod(buf, &end);
530 fval *= pow(2, str2shift(end));
531 if (fval > UINT64_MAX) {
532 (void) fprintf(stderr, "ztest: value too large: %s\n",
536 val = (uint64_t)fval;
538 int shift = str2shift(end);
539 if (shift >= 64 || (val << shift) >> shift != val) {
540 (void) fprintf(stderr, "ztest: value too large: %s\n",
550 usage(boolean_t requested)
552 const ztest_shared_opts_t *zo = &ztest_opts_defaults;
554 char nice_vdev_size[10];
555 char nice_gang_bang[10];
556 FILE *fp = requested ? stdout : stderr;
558 nicenum(zo->zo_vdev_size, nice_vdev_size);
559 nicenum(zo->zo_metaslab_gang_bang, nice_gang_bang);
561 (void) fprintf(fp, "Usage: %s\n"
562 "\t[-v vdevs (default: %llu)]\n"
563 "\t[-s size_of_each_vdev (default: %s)]\n"
564 "\t[-a alignment_shift (default: %d)] use 0 for random\n"
565 "\t[-m mirror_copies (default: %d)]\n"
566 "\t[-r raidz_disks (default: %d)]\n"
567 "\t[-R raidz_parity (default: %d)]\n"
568 "\t[-d datasets (default: %d)]\n"
569 "\t[-t threads (default: %d)]\n"
570 "\t[-g gang_block_threshold (default: %s)]\n"
571 "\t[-i init_count (default: %d)] initialize pool i times\n"
572 "\t[-k kill_percentage (default: %llu%%)]\n"
573 "\t[-p pool_name (default: %s)]\n"
574 "\t[-f dir (default: %s)] file directory for vdev files\n"
575 "\t[-V] verbose (use multiple times for ever more blather)\n"
576 "\t[-E] use existing pool instead of creating new one\n"
577 "\t[-T time (default: %llu sec)] total run time\n"
578 "\t[-F freezeloops (default: %llu)] max loops in spa_freeze()\n"
579 "\t[-P passtime (default: %llu sec)] time per pass\n"
580 "\t[-B alt_ztest (default: <none>)] alternate ztest path\n"
581 "\t[-h] (print help)\n"
584 (u_longlong_t)zo->zo_vdevs, /* -v */
585 nice_vdev_size, /* -s */
586 zo->zo_ashift, /* -a */
587 zo->zo_mirrors, /* -m */
588 zo->zo_raidz, /* -r */
589 zo->zo_raidz_parity, /* -R */
590 zo->zo_datasets, /* -d */
591 zo->zo_threads, /* -t */
592 nice_gang_bang, /* -g */
593 zo->zo_init, /* -i */
594 (u_longlong_t)zo->zo_killrate, /* -k */
595 zo->zo_pool, /* -p */
597 (u_longlong_t)zo->zo_time, /* -T */
598 (u_longlong_t)zo->zo_maxloops, /* -F */
599 (u_longlong_t)zo->zo_passtime);
600 exit(requested ? 0 : 1);
604 process_options(int argc, char **argv)
607 ztest_shared_opts_t *zo = &ztest_opts;
611 char altdir[MAXNAMELEN] = { 0 };
613 bcopy(&ztest_opts_defaults, zo, sizeof (*zo));
615 while ((opt = getopt(argc, argv,
616 "v:s:a:m:r:R:d:t:g:i:k:p:f:VET:P:hF:B:")) != EOF) {
633 value = nicenumtoull(optarg);
637 zo->zo_vdevs = value;
640 zo->zo_vdev_size = MAX(SPA_MINDEVSIZE, value);
643 zo->zo_ashift = value;
646 zo->zo_mirrors = value;
649 zo->zo_raidz = MAX(1, value);
652 zo->zo_raidz_parity = MIN(MAX(value, 1), 3);
655 zo->zo_datasets = MAX(1, value);
658 zo->zo_threads = MAX(1, value);
661 zo->zo_metaslab_gang_bang = MAX(SPA_MINBLOCKSIZE << 1,
668 zo->zo_killrate = value;
671 (void) strlcpy(zo->zo_pool, optarg,
672 sizeof (zo->zo_pool));
675 path = realpath(optarg, NULL);
677 (void) fprintf(stderr, "error: %s: %s\n",
678 optarg, strerror(errno));
681 (void) strlcpy(zo->zo_dir, path,
682 sizeof (zo->zo_dir));
695 zo->zo_passtime = MAX(1, value);
698 zo->zo_maxloops = MAX(1, value);
701 (void) strlcpy(altdir, optarg, sizeof (altdir));
713 zo->zo_raidz_parity = MIN(zo->zo_raidz_parity, zo->zo_raidz - 1);
716 (zo->zo_vdevs > 0 ? zo->zo_time * NANOSEC / zo->zo_vdevs :
719 if (strlen(altdir) > 0) {
727 cmd = umem_alloc(MAXPATHLEN, UMEM_NOFAIL);
728 realaltdir = umem_alloc(MAXPATHLEN, UMEM_NOFAIL);
730 VERIFY(NULL != realpath(getexecname(), cmd));
731 if (0 != access(altdir, F_OK)) {
732 ztest_dump_core = B_FALSE;
733 fatal(B_TRUE, "invalid alternate ztest path: %s",
736 VERIFY(NULL != realpath(altdir, realaltdir));
739 * 'cmd' should be of the form "<anything>/usr/bin/<isa>/ztest".
740 * We want to extract <isa> to determine if we should use
741 * 32 or 64 bit binaries.
743 bin = strstr(cmd, "/usr/bin/");
744 ztest = strstr(bin, "/ztest");
746 isalen = ztest - isa;
747 (void) snprintf(zo->zo_alt_ztest, sizeof (zo->zo_alt_ztest),
748 "%s/usr/bin/%.*s/ztest", realaltdir, isalen, isa);
749 (void) snprintf(zo->zo_alt_libpath, sizeof (zo->zo_alt_libpath),
750 "%s/usr/lib/%.*s", realaltdir, isalen, isa);
752 if (0 != access(zo->zo_alt_ztest, X_OK)) {
753 ztest_dump_core = B_FALSE;
754 fatal(B_TRUE, "invalid alternate ztest: %s",
756 } else if (0 != access(zo->zo_alt_libpath, X_OK)) {
757 ztest_dump_core = B_FALSE;
758 fatal(B_TRUE, "invalid alternate lib directory %s",
762 umem_free(cmd, MAXPATHLEN);
763 umem_free(realaltdir, MAXPATHLEN);
768 ztest_kill(ztest_shared_t *zs)
770 zs->zs_alloc = metaslab_class_get_alloc(spa_normal_class(ztest_spa));
771 zs->zs_space = metaslab_class_get_space(spa_normal_class(ztest_spa));
774 * Before we kill off ztest, make sure that the config is updated.
775 * See comment above spa_config_sync().
777 mutex_enter(&spa_namespace_lock);
778 spa_config_sync(ztest_spa, B_FALSE, B_FALSE);
779 mutex_exit(&spa_namespace_lock);
781 zfs_dbgmsg_print(FTAG);
782 (void) kill(getpid(), SIGKILL);
786 ztest_random(uint64_t range)
790 ASSERT3S(ztest_fd_rand, >=, 0);
795 if (read(ztest_fd_rand, &r, sizeof (r)) != sizeof (r))
796 fatal(1, "short read from /dev/urandom");
803 ztest_record_enospc(const char *s)
805 ztest_shared->zs_enospc_count++;
809 ztest_get_ashift(void)
811 if (ztest_opts.zo_ashift == 0)
812 return (SPA_MINBLOCKSHIFT + ztest_random(3));
813 return (ztest_opts.zo_ashift);
817 make_vdev_file(char *path, char *aux, char *pool, size_t size, uint64_t ashift)
819 char pathbuf[MAXPATHLEN];
824 ashift = ztest_get_ashift();
830 vdev = ztest_shared->zs_vdev_aux;
831 (void) snprintf(path, sizeof (pathbuf),
832 ztest_aux_template, ztest_opts.zo_dir,
833 pool == NULL ? ztest_opts.zo_pool : pool,
836 vdev = ztest_shared->zs_vdev_next_leaf++;
837 (void) snprintf(path, sizeof (pathbuf),
838 ztest_dev_template, ztest_opts.zo_dir,
839 pool == NULL ? ztest_opts.zo_pool : pool, vdev);
844 int fd = open(path, O_RDWR | O_CREAT | O_TRUNC, 0666);
846 fatal(1, "can't open %s", path);
847 if (ftruncate(fd, size) != 0)
848 fatal(1, "can't ftruncate %s", path);
852 VERIFY(nvlist_alloc(&file, NV_UNIQUE_NAME, 0) == 0);
853 VERIFY(nvlist_add_string(file, ZPOOL_CONFIG_TYPE, VDEV_TYPE_FILE) == 0);
854 VERIFY(nvlist_add_string(file, ZPOOL_CONFIG_PATH, path) == 0);
855 VERIFY(nvlist_add_uint64(file, ZPOOL_CONFIG_ASHIFT, ashift) == 0);
861 make_vdev_raidz(char *path, char *aux, char *pool, size_t size,
862 uint64_t ashift, int r)
864 nvlist_t *raidz, **child;
868 return (make_vdev_file(path, aux, pool, size, ashift));
869 child = umem_alloc(r * sizeof (nvlist_t *), UMEM_NOFAIL);
871 for (c = 0; c < r; c++)
872 child[c] = make_vdev_file(path, aux, pool, size, ashift);
874 VERIFY(nvlist_alloc(&raidz, NV_UNIQUE_NAME, 0) == 0);
875 VERIFY(nvlist_add_string(raidz, ZPOOL_CONFIG_TYPE,
876 VDEV_TYPE_RAIDZ) == 0);
877 VERIFY(nvlist_add_uint64(raidz, ZPOOL_CONFIG_NPARITY,
878 ztest_opts.zo_raidz_parity) == 0);
879 VERIFY(nvlist_add_nvlist_array(raidz, ZPOOL_CONFIG_CHILDREN,
882 for (c = 0; c < r; c++)
883 nvlist_free(child[c]);
885 umem_free(child, r * sizeof (nvlist_t *));
891 make_vdev_mirror(char *path, char *aux, char *pool, size_t size,
892 uint64_t ashift, int r, int m)
894 nvlist_t *mirror, **child;
898 return (make_vdev_raidz(path, aux, pool, size, ashift, r));
900 child = umem_alloc(m * sizeof (nvlist_t *), UMEM_NOFAIL);
902 for (c = 0; c < m; c++)
903 child[c] = make_vdev_raidz(path, aux, pool, size, ashift, r);
905 VERIFY(nvlist_alloc(&mirror, NV_UNIQUE_NAME, 0) == 0);
906 VERIFY(nvlist_add_string(mirror, ZPOOL_CONFIG_TYPE,
907 VDEV_TYPE_MIRROR) == 0);
908 VERIFY(nvlist_add_nvlist_array(mirror, ZPOOL_CONFIG_CHILDREN,
911 for (c = 0; c < m; c++)
912 nvlist_free(child[c]);
914 umem_free(child, m * sizeof (nvlist_t *));
920 make_vdev_root(char *path, char *aux, char *pool, size_t size, uint64_t ashift,
921 int log, int r, int m, int t)
923 nvlist_t *root, **child;
928 child = umem_alloc(t * sizeof (nvlist_t *), UMEM_NOFAIL);
930 for (c = 0; c < t; c++) {
931 child[c] = make_vdev_mirror(path, aux, pool, size, ashift,
933 VERIFY(nvlist_add_uint64(child[c], ZPOOL_CONFIG_IS_LOG,
937 VERIFY(nvlist_alloc(&root, NV_UNIQUE_NAME, 0) == 0);
938 VERIFY(nvlist_add_string(root, ZPOOL_CONFIG_TYPE, VDEV_TYPE_ROOT) == 0);
939 VERIFY(nvlist_add_nvlist_array(root, aux ? aux : ZPOOL_CONFIG_CHILDREN,
942 for (c = 0; c < t; c++)
943 nvlist_free(child[c]);
945 umem_free(child, t * sizeof (nvlist_t *));
951 * Find a random spa version. Returns back a random spa version in the
952 * range [initial_version, SPA_VERSION_FEATURES].
955 ztest_random_spa_version(uint64_t initial_version)
957 uint64_t version = initial_version;
959 if (version <= SPA_VERSION_BEFORE_FEATURES) {
961 ztest_random(SPA_VERSION_BEFORE_FEATURES - version + 1);
964 if (version > SPA_VERSION_BEFORE_FEATURES)
965 version = SPA_VERSION_FEATURES;
967 ASSERT(SPA_VERSION_IS_SUPPORTED(version));
972 ztest_random_blocksize(void)
974 return (1 << (SPA_MINBLOCKSHIFT +
975 ztest_random(SPA_MAXBLOCKSHIFT - SPA_MINBLOCKSHIFT + 1)));
979 ztest_random_ibshift(void)
981 return (DN_MIN_INDBLKSHIFT +
982 ztest_random(DN_MAX_INDBLKSHIFT - DN_MIN_INDBLKSHIFT + 1));
986 ztest_random_vdev_top(spa_t *spa, boolean_t log_ok)
989 vdev_t *rvd = spa->spa_root_vdev;
992 ASSERT(spa_config_held(spa, SCL_ALL, RW_READER) != 0);
995 top = ztest_random(rvd->vdev_children);
996 tvd = rvd->vdev_child[top];
997 } while (tvd->vdev_ishole || (tvd->vdev_islog && !log_ok) ||
998 tvd->vdev_mg == NULL || tvd->vdev_mg->mg_class == NULL);
1004 ztest_random_dsl_prop(zfs_prop_t prop)
1009 value = zfs_prop_random_value(prop, ztest_random(-1ULL));
1010 } while (prop == ZFS_PROP_CHECKSUM && value == ZIO_CHECKSUM_OFF);
1016 ztest_dsl_prop_set_uint64(char *osname, zfs_prop_t prop, uint64_t value,
1019 const char *propname = zfs_prop_to_name(prop);
1020 const char *valname;
1021 char setpoint[MAXPATHLEN];
1025 error = dsl_prop_set_int(osname, propname,
1026 (inherit ? ZPROP_SRC_NONE : ZPROP_SRC_LOCAL), value);
1028 if (error == ENOSPC) {
1029 ztest_record_enospc(FTAG);
1034 VERIFY0(dsl_prop_get_integer(osname, propname, &curval, setpoint));
1036 if (ztest_opts.zo_verbose >= 6) {
1037 VERIFY(zfs_prop_index_to_string(prop, curval, &valname) == 0);
1038 (void) printf("%s %s = %s at '%s'\n",
1039 osname, propname, valname, setpoint);
1046 ztest_spa_prop_set_uint64(zpool_prop_t prop, uint64_t value)
1048 spa_t *spa = ztest_spa;
1049 nvlist_t *props = NULL;
1052 VERIFY(nvlist_alloc(&props, NV_UNIQUE_NAME, 0) == 0);
1053 VERIFY(nvlist_add_uint64(props, zpool_prop_to_name(prop), value) == 0);
1055 error = spa_prop_set(spa, props);
1059 if (error == ENOSPC) {
1060 ztest_record_enospc(FTAG);
1069 ztest_rll_init(rll_t *rll)
1071 rll->rll_writer = NULL;
1072 rll->rll_readers = 0;
1073 VERIFY(_mutex_init(&rll->rll_lock, USYNC_THREAD, NULL) == 0);
1074 VERIFY(cond_init(&rll->rll_cv, USYNC_THREAD, NULL) == 0);
1078 ztest_rll_destroy(rll_t *rll)
1080 ASSERT(rll->rll_writer == NULL);
1081 ASSERT(rll->rll_readers == 0);
1082 VERIFY(_mutex_destroy(&rll->rll_lock) == 0);
1083 VERIFY(cond_destroy(&rll->rll_cv) == 0);
1087 ztest_rll_lock(rll_t *rll, rl_type_t type)
1089 VERIFY(mutex_lock(&rll->rll_lock) == 0);
1091 if (type == RL_READER) {
1092 while (rll->rll_writer != NULL)
1093 (void) cond_wait(&rll->rll_cv, &rll->rll_lock);
1096 while (rll->rll_writer != NULL || rll->rll_readers)
1097 (void) cond_wait(&rll->rll_cv, &rll->rll_lock);
1098 rll->rll_writer = curthread;
1101 VERIFY(mutex_unlock(&rll->rll_lock) == 0);
1105 ztest_rll_unlock(rll_t *rll)
1107 VERIFY(mutex_lock(&rll->rll_lock) == 0);
1109 if (rll->rll_writer) {
1110 ASSERT(rll->rll_readers == 0);
1111 rll->rll_writer = NULL;
1113 ASSERT(rll->rll_readers != 0);
1114 ASSERT(rll->rll_writer == NULL);
1118 if (rll->rll_writer == NULL && rll->rll_readers == 0)
1119 VERIFY(cond_broadcast(&rll->rll_cv) == 0);
1121 VERIFY(mutex_unlock(&rll->rll_lock) == 0);
1125 ztest_object_lock(ztest_ds_t *zd, uint64_t object, rl_type_t type)
1127 rll_t *rll = &zd->zd_object_lock[object & (ZTEST_OBJECT_LOCKS - 1)];
1129 ztest_rll_lock(rll, type);
1133 ztest_object_unlock(ztest_ds_t *zd, uint64_t object)
1135 rll_t *rll = &zd->zd_object_lock[object & (ZTEST_OBJECT_LOCKS - 1)];
1137 ztest_rll_unlock(rll);
1141 ztest_range_lock(ztest_ds_t *zd, uint64_t object, uint64_t offset,
1142 uint64_t size, rl_type_t type)
1144 uint64_t hash = object ^ (offset % (ZTEST_RANGE_LOCKS + 1));
1145 rll_t *rll = &zd->zd_range_lock[hash & (ZTEST_RANGE_LOCKS - 1)];
1148 rl = umem_alloc(sizeof (*rl), UMEM_NOFAIL);
1149 rl->rl_object = object;
1150 rl->rl_offset = offset;
1154 ztest_rll_lock(rll, type);
1160 ztest_range_unlock(rl_t *rl)
1162 rll_t *rll = rl->rl_lock;
1164 ztest_rll_unlock(rll);
1166 umem_free(rl, sizeof (*rl));
1170 ztest_zd_init(ztest_ds_t *zd, ztest_shared_ds_t *szd, objset_t *os)
1173 zd->zd_zilog = dmu_objset_zil(os);
1174 zd->zd_shared = szd;
1175 dmu_objset_name(os, zd->zd_name);
1177 if (zd->zd_shared != NULL)
1178 zd->zd_shared->zd_seq = 0;
1180 VERIFY(rwlock_init(&zd->zd_zilog_lock, USYNC_THREAD, NULL) == 0);
1181 VERIFY(_mutex_init(&zd->zd_dirobj_lock, USYNC_THREAD, NULL) == 0);
1183 for (int l = 0; l < ZTEST_OBJECT_LOCKS; l++)
1184 ztest_rll_init(&zd->zd_object_lock[l]);
1186 for (int l = 0; l < ZTEST_RANGE_LOCKS; l++)
1187 ztest_rll_init(&zd->zd_range_lock[l]);
1191 ztest_zd_fini(ztest_ds_t *zd)
1193 VERIFY(_mutex_destroy(&zd->zd_dirobj_lock) == 0);
1195 for (int l = 0; l < ZTEST_OBJECT_LOCKS; l++)
1196 ztest_rll_destroy(&zd->zd_object_lock[l]);
1198 for (int l = 0; l < ZTEST_RANGE_LOCKS; l++)
1199 ztest_rll_destroy(&zd->zd_range_lock[l]);
1202 #define TXG_MIGHTWAIT (ztest_random(10) == 0 ? TXG_NOWAIT : TXG_WAIT)
1205 ztest_tx_assign(dmu_tx_t *tx, uint64_t txg_how, const char *tag)
1211 * Attempt to assign tx to some transaction group.
1213 error = dmu_tx_assign(tx, txg_how);
1215 if (error == ERESTART) {
1216 ASSERT(txg_how == TXG_NOWAIT);
1219 ASSERT3U(error, ==, ENOSPC);
1220 ztest_record_enospc(tag);
1225 txg = dmu_tx_get_txg(tx);
1231 ztest_pattern_set(void *buf, uint64_t size, uint64_t value)
1234 uint64_t *ip_end = (uint64_t *)((uintptr_t)buf + (uintptr_t)size);
1241 ztest_pattern_match(void *buf, uint64_t size, uint64_t value)
1244 uint64_t *ip_end = (uint64_t *)((uintptr_t)buf + (uintptr_t)size);
1248 diff |= (value - *ip++);
1254 ztest_bt_generate(ztest_block_tag_t *bt, objset_t *os, uint64_t object,
1255 uint64_t offset, uint64_t gen, uint64_t txg, uint64_t crtxg)
1257 bt->bt_magic = BT_MAGIC;
1258 bt->bt_objset = dmu_objset_id(os);
1259 bt->bt_object = object;
1260 bt->bt_offset = offset;
1263 bt->bt_crtxg = crtxg;
1267 ztest_bt_verify(ztest_block_tag_t *bt, objset_t *os, uint64_t object,
1268 uint64_t offset, uint64_t gen, uint64_t txg, uint64_t crtxg)
1270 ASSERT3U(bt->bt_magic, ==, BT_MAGIC);
1271 ASSERT3U(bt->bt_objset, ==, dmu_objset_id(os));
1272 ASSERT3U(bt->bt_object, ==, object);
1273 ASSERT3U(bt->bt_offset, ==, offset);
1274 ASSERT3U(bt->bt_gen, <=, gen);
1275 ASSERT3U(bt->bt_txg, <=, txg);
1276 ASSERT3U(bt->bt_crtxg, ==, crtxg);
1279 static ztest_block_tag_t *
1280 ztest_bt_bonus(dmu_buf_t *db)
1282 dmu_object_info_t doi;
1283 ztest_block_tag_t *bt;
1285 dmu_object_info_from_db(db, &doi);
1286 ASSERT3U(doi.doi_bonus_size, <=, db->db_size);
1287 ASSERT3U(doi.doi_bonus_size, >=, sizeof (*bt));
1288 bt = (void *)((char *)db->db_data + doi.doi_bonus_size - sizeof (*bt));
1297 #define lrz_type lr_mode
1298 #define lrz_blocksize lr_uid
1299 #define lrz_ibshift lr_gid
1300 #define lrz_bonustype lr_rdev
1301 #define lrz_bonuslen lr_crtime[1]
1304 ztest_log_create(ztest_ds_t *zd, dmu_tx_t *tx, lr_create_t *lr)
1306 char *name = (void *)(lr + 1); /* name follows lr */
1307 size_t namesize = strlen(name) + 1;
1310 if (zil_replaying(zd->zd_zilog, tx))
1313 itx = zil_itx_create(TX_CREATE, sizeof (*lr) + namesize);
1314 bcopy(&lr->lr_common + 1, &itx->itx_lr + 1,
1315 sizeof (*lr) + namesize - sizeof (lr_t));
1317 zil_itx_assign(zd->zd_zilog, itx, tx);
1321 ztest_log_remove(ztest_ds_t *zd, dmu_tx_t *tx, lr_remove_t *lr, uint64_t object)
1323 char *name = (void *)(lr + 1); /* name follows lr */
1324 size_t namesize = strlen(name) + 1;
1327 if (zil_replaying(zd->zd_zilog, tx))
1330 itx = zil_itx_create(TX_REMOVE, sizeof (*lr) + namesize);
1331 bcopy(&lr->lr_common + 1, &itx->itx_lr + 1,
1332 sizeof (*lr) + namesize - sizeof (lr_t));
1334 itx->itx_oid = object;
1335 zil_itx_assign(zd->zd_zilog, itx, tx);
1339 ztest_log_write(ztest_ds_t *zd, dmu_tx_t *tx, lr_write_t *lr)
1342 itx_wr_state_t write_state = ztest_random(WR_NUM_STATES);
1344 if (zil_replaying(zd->zd_zilog, tx))
1347 if (lr->lr_length > ZIL_MAX_LOG_DATA)
1348 write_state = WR_INDIRECT;
1350 itx = zil_itx_create(TX_WRITE,
1351 sizeof (*lr) + (write_state == WR_COPIED ? lr->lr_length : 0));
1353 if (write_state == WR_COPIED &&
1354 dmu_read(zd->zd_os, lr->lr_foid, lr->lr_offset, lr->lr_length,
1355 ((lr_write_t *)&itx->itx_lr) + 1, DMU_READ_NO_PREFETCH) != 0) {
1356 zil_itx_destroy(itx);
1357 itx = zil_itx_create(TX_WRITE, sizeof (*lr));
1358 write_state = WR_NEED_COPY;
1360 itx->itx_private = zd;
1361 itx->itx_wr_state = write_state;
1362 itx->itx_sync = (ztest_random(8) == 0);
1363 itx->itx_sod += (write_state == WR_NEED_COPY ? lr->lr_length : 0);
1365 bcopy(&lr->lr_common + 1, &itx->itx_lr + 1,
1366 sizeof (*lr) - sizeof (lr_t));
1368 zil_itx_assign(zd->zd_zilog, itx, tx);
1372 ztest_log_truncate(ztest_ds_t *zd, dmu_tx_t *tx, lr_truncate_t *lr)
1376 if (zil_replaying(zd->zd_zilog, tx))
1379 itx = zil_itx_create(TX_TRUNCATE, sizeof (*lr));
1380 bcopy(&lr->lr_common + 1, &itx->itx_lr + 1,
1381 sizeof (*lr) - sizeof (lr_t));
1383 itx->itx_sync = B_FALSE;
1384 zil_itx_assign(zd->zd_zilog, itx, tx);
1388 ztest_log_setattr(ztest_ds_t *zd, dmu_tx_t *tx, lr_setattr_t *lr)
1392 if (zil_replaying(zd->zd_zilog, tx))
1395 itx = zil_itx_create(TX_SETATTR, sizeof (*lr));
1396 bcopy(&lr->lr_common + 1, &itx->itx_lr + 1,
1397 sizeof (*lr) - sizeof (lr_t));
1399 itx->itx_sync = B_FALSE;
1400 zil_itx_assign(zd->zd_zilog, itx, tx);
1407 ztest_replay_create(ztest_ds_t *zd, lr_create_t *lr, boolean_t byteswap)
1409 char *name = (void *)(lr + 1); /* name follows lr */
1410 objset_t *os = zd->zd_os;
1411 ztest_block_tag_t *bbt;
1418 byteswap_uint64_array(lr, sizeof (*lr));
1420 ASSERT(lr->lr_doid == ZTEST_DIROBJ);
1421 ASSERT(name[0] != '\0');
1423 tx = dmu_tx_create(os);
1425 dmu_tx_hold_zap(tx, lr->lr_doid, B_TRUE, name);
1427 if (lr->lrz_type == DMU_OT_ZAP_OTHER) {
1428 dmu_tx_hold_zap(tx, DMU_NEW_OBJECT, B_TRUE, NULL);
1430 dmu_tx_hold_bonus(tx, DMU_NEW_OBJECT);
1433 txg = ztest_tx_assign(tx, TXG_WAIT, FTAG);
1437 ASSERT(dmu_objset_zil(os)->zl_replay == !!lr->lr_foid);
1439 if (lr->lrz_type == DMU_OT_ZAP_OTHER) {
1440 if (lr->lr_foid == 0) {
1441 lr->lr_foid = zap_create(os,
1442 lr->lrz_type, lr->lrz_bonustype,
1443 lr->lrz_bonuslen, tx);
1445 error = zap_create_claim(os, lr->lr_foid,
1446 lr->lrz_type, lr->lrz_bonustype,
1447 lr->lrz_bonuslen, tx);
1450 if (lr->lr_foid == 0) {
1451 lr->lr_foid = dmu_object_alloc(os,
1452 lr->lrz_type, 0, lr->lrz_bonustype,
1453 lr->lrz_bonuslen, tx);
1455 error = dmu_object_claim(os, lr->lr_foid,
1456 lr->lrz_type, 0, lr->lrz_bonustype,
1457 lr->lrz_bonuslen, tx);
1462 ASSERT3U(error, ==, EEXIST);
1463 ASSERT(zd->zd_zilog->zl_replay);
1468 ASSERT(lr->lr_foid != 0);
1470 if (lr->lrz_type != DMU_OT_ZAP_OTHER)
1471 VERIFY3U(0, ==, dmu_object_set_blocksize(os, lr->lr_foid,
1472 lr->lrz_blocksize, lr->lrz_ibshift, tx));
1474 VERIFY3U(0, ==, dmu_bonus_hold(os, lr->lr_foid, FTAG, &db));
1475 bbt = ztest_bt_bonus(db);
1476 dmu_buf_will_dirty(db, tx);
1477 ztest_bt_generate(bbt, os, lr->lr_foid, -1ULL, lr->lr_gen, txg, txg);
1478 dmu_buf_rele(db, FTAG);
1480 VERIFY3U(0, ==, zap_add(os, lr->lr_doid, name, sizeof (uint64_t), 1,
1483 (void) ztest_log_create(zd, tx, lr);
1491 ztest_replay_remove(ztest_ds_t *zd, lr_remove_t *lr, boolean_t byteswap)
1493 char *name = (void *)(lr + 1); /* name follows lr */
1494 objset_t *os = zd->zd_os;
1495 dmu_object_info_t doi;
1497 uint64_t object, txg;
1500 byteswap_uint64_array(lr, sizeof (*lr));
1502 ASSERT(lr->lr_doid == ZTEST_DIROBJ);
1503 ASSERT(name[0] != '\0');
1506 zap_lookup(os, lr->lr_doid, name, sizeof (object), 1, &object));
1507 ASSERT(object != 0);
1509 ztest_object_lock(zd, object, RL_WRITER);
1511 VERIFY3U(0, ==, dmu_object_info(os, object, &doi));
1513 tx = dmu_tx_create(os);
1515 dmu_tx_hold_zap(tx, lr->lr_doid, B_FALSE, name);
1516 dmu_tx_hold_free(tx, object, 0, DMU_OBJECT_END);
1518 txg = ztest_tx_assign(tx, TXG_WAIT, FTAG);
1520 ztest_object_unlock(zd, object);
1524 if (doi.doi_type == DMU_OT_ZAP_OTHER) {
1525 VERIFY3U(0, ==, zap_destroy(os, object, tx));
1527 VERIFY3U(0, ==, dmu_object_free(os, object, tx));
1530 VERIFY3U(0, ==, zap_remove(os, lr->lr_doid, name, tx));
1532 (void) ztest_log_remove(zd, tx, lr, object);
1536 ztest_object_unlock(zd, object);
1542 ztest_replay_write(ztest_ds_t *zd, lr_write_t *lr, boolean_t byteswap)
1544 objset_t *os = zd->zd_os;
1545 void *data = lr + 1; /* data follows lr */
1546 uint64_t offset, length;
1547 ztest_block_tag_t *bt = data;
1548 ztest_block_tag_t *bbt;
1549 uint64_t gen, txg, lrtxg, crtxg;
1550 dmu_object_info_t doi;
1553 arc_buf_t *abuf = NULL;
1557 byteswap_uint64_array(lr, sizeof (*lr));
1559 offset = lr->lr_offset;
1560 length = lr->lr_length;
1562 /* If it's a dmu_sync() block, write the whole block */
1563 if (lr->lr_common.lrc_reclen == sizeof (lr_write_t)) {
1564 uint64_t blocksize = BP_GET_LSIZE(&lr->lr_blkptr);
1565 if (length < blocksize) {
1566 offset -= offset % blocksize;
1571 if (bt->bt_magic == BSWAP_64(BT_MAGIC))
1572 byteswap_uint64_array(bt, sizeof (*bt));
1574 if (bt->bt_magic != BT_MAGIC)
1577 ztest_object_lock(zd, lr->lr_foid, RL_READER);
1578 rl = ztest_range_lock(zd, lr->lr_foid, offset, length, RL_WRITER);
1580 VERIFY3U(0, ==, dmu_bonus_hold(os, lr->lr_foid, FTAG, &db));
1582 dmu_object_info_from_db(db, &doi);
1584 bbt = ztest_bt_bonus(db);
1585 ASSERT3U(bbt->bt_magic, ==, BT_MAGIC);
1587 crtxg = bbt->bt_crtxg;
1588 lrtxg = lr->lr_common.lrc_txg;
1590 tx = dmu_tx_create(os);
1592 dmu_tx_hold_write(tx, lr->lr_foid, offset, length);
1594 if (ztest_random(8) == 0 && length == doi.doi_data_block_size &&
1595 P2PHASE(offset, length) == 0)
1596 abuf = dmu_request_arcbuf(db, length);
1598 txg = ztest_tx_assign(tx, TXG_WAIT, FTAG);
1601 dmu_return_arcbuf(abuf);
1602 dmu_buf_rele(db, FTAG);
1603 ztest_range_unlock(rl);
1604 ztest_object_unlock(zd, lr->lr_foid);
1610 * Usually, verify the old data before writing new data --
1611 * but not always, because we also want to verify correct
1612 * behavior when the data was not recently read into cache.
1614 ASSERT(offset % doi.doi_data_block_size == 0);
1615 if (ztest_random(4) != 0) {
1616 int prefetch = ztest_random(2) ?
1617 DMU_READ_PREFETCH : DMU_READ_NO_PREFETCH;
1618 ztest_block_tag_t rbt;
1620 VERIFY(dmu_read(os, lr->lr_foid, offset,
1621 sizeof (rbt), &rbt, prefetch) == 0);
1622 if (rbt.bt_magic == BT_MAGIC) {
1623 ztest_bt_verify(&rbt, os, lr->lr_foid,
1624 offset, gen, txg, crtxg);
1629 * Writes can appear to be newer than the bonus buffer because
1630 * the ztest_get_data() callback does a dmu_read() of the
1631 * open-context data, which may be different than the data
1632 * as it was when the write was generated.
1634 if (zd->zd_zilog->zl_replay) {
1635 ztest_bt_verify(bt, os, lr->lr_foid, offset,
1636 MAX(gen, bt->bt_gen), MAX(txg, lrtxg),
1641 * Set the bt's gen/txg to the bonus buffer's gen/txg
1642 * so that all of the usual ASSERTs will work.
1644 ztest_bt_generate(bt, os, lr->lr_foid, offset, gen, txg, crtxg);
1648 dmu_write(os, lr->lr_foid, offset, length, data, tx);
1650 bcopy(data, abuf->b_data, length);
1651 dmu_assign_arcbuf(db, offset, abuf, tx);
1654 (void) ztest_log_write(zd, tx, lr);
1656 dmu_buf_rele(db, FTAG);
1660 ztest_range_unlock(rl);
1661 ztest_object_unlock(zd, lr->lr_foid);
1667 ztest_replay_truncate(ztest_ds_t *zd, lr_truncate_t *lr, boolean_t byteswap)
1669 objset_t *os = zd->zd_os;
1675 byteswap_uint64_array(lr, sizeof (*lr));
1677 ztest_object_lock(zd, lr->lr_foid, RL_READER);
1678 rl = ztest_range_lock(zd, lr->lr_foid, lr->lr_offset, lr->lr_length,
1681 tx = dmu_tx_create(os);
1683 dmu_tx_hold_free(tx, lr->lr_foid, lr->lr_offset, lr->lr_length);
1685 txg = ztest_tx_assign(tx, TXG_WAIT, FTAG);
1687 ztest_range_unlock(rl);
1688 ztest_object_unlock(zd, lr->lr_foid);
1692 VERIFY(dmu_free_range(os, lr->lr_foid, lr->lr_offset,
1693 lr->lr_length, tx) == 0);
1695 (void) ztest_log_truncate(zd, tx, lr);
1699 ztest_range_unlock(rl);
1700 ztest_object_unlock(zd, lr->lr_foid);
1706 ztest_replay_setattr(ztest_ds_t *zd, lr_setattr_t *lr, boolean_t byteswap)
1708 objset_t *os = zd->zd_os;
1711 ztest_block_tag_t *bbt;
1712 uint64_t txg, lrtxg, crtxg;
1715 byteswap_uint64_array(lr, sizeof (*lr));
1717 ztest_object_lock(zd, lr->lr_foid, RL_WRITER);
1719 VERIFY3U(0, ==, dmu_bonus_hold(os, lr->lr_foid, FTAG, &db));
1721 tx = dmu_tx_create(os);
1722 dmu_tx_hold_bonus(tx, lr->lr_foid);
1724 txg = ztest_tx_assign(tx, TXG_WAIT, FTAG);
1726 dmu_buf_rele(db, FTAG);
1727 ztest_object_unlock(zd, lr->lr_foid);
1731 bbt = ztest_bt_bonus(db);
1732 ASSERT3U(bbt->bt_magic, ==, BT_MAGIC);
1733 crtxg = bbt->bt_crtxg;
1734 lrtxg = lr->lr_common.lrc_txg;
1736 if (zd->zd_zilog->zl_replay) {
1737 ASSERT(lr->lr_size != 0);
1738 ASSERT(lr->lr_mode != 0);
1742 * Randomly change the size and increment the generation.
1744 lr->lr_size = (ztest_random(db->db_size / sizeof (*bbt)) + 1) *
1746 lr->lr_mode = bbt->bt_gen + 1;
1751 * Verify that the current bonus buffer is not newer than our txg.
1753 ztest_bt_verify(bbt, os, lr->lr_foid, -1ULL, lr->lr_mode,
1754 MAX(txg, lrtxg), crtxg);
1756 dmu_buf_will_dirty(db, tx);
1758 ASSERT3U(lr->lr_size, >=, sizeof (*bbt));
1759 ASSERT3U(lr->lr_size, <=, db->db_size);
1760 VERIFY0(dmu_set_bonus(db, lr->lr_size, tx));
1761 bbt = ztest_bt_bonus(db);
1763 ztest_bt_generate(bbt, os, lr->lr_foid, -1ULL, lr->lr_mode, txg, crtxg);
1765 dmu_buf_rele(db, FTAG);
1767 (void) ztest_log_setattr(zd, tx, lr);
1771 ztest_object_unlock(zd, lr->lr_foid);
1776 zil_replay_func_t *ztest_replay_vector[TX_MAX_TYPE] = {
1777 NULL, /* 0 no such transaction type */
1778 ztest_replay_create, /* TX_CREATE */
1779 NULL, /* TX_MKDIR */
1780 NULL, /* TX_MKXATTR */
1781 NULL, /* TX_SYMLINK */
1782 ztest_replay_remove, /* TX_REMOVE */
1783 NULL, /* TX_RMDIR */
1785 NULL, /* TX_RENAME */
1786 ztest_replay_write, /* TX_WRITE */
1787 ztest_replay_truncate, /* TX_TRUNCATE */
1788 ztest_replay_setattr, /* TX_SETATTR */
1790 NULL, /* TX_CREATE_ACL */
1791 NULL, /* TX_CREATE_ATTR */
1792 NULL, /* TX_CREATE_ACL_ATTR */
1793 NULL, /* TX_MKDIR_ACL */
1794 NULL, /* TX_MKDIR_ATTR */
1795 NULL, /* TX_MKDIR_ACL_ATTR */
1796 NULL, /* TX_WRITE2 */
1800 * ZIL get_data callbacks
1804 ztest_get_done(zgd_t *zgd, int error)
1806 ztest_ds_t *zd = zgd->zgd_private;
1807 uint64_t object = zgd->zgd_rl->rl_object;
1810 dmu_buf_rele(zgd->zgd_db, zgd);
1812 ztest_range_unlock(zgd->zgd_rl);
1813 ztest_object_unlock(zd, object);
1815 if (error == 0 && zgd->zgd_bp)
1816 zil_add_block(zgd->zgd_zilog, zgd->zgd_bp);
1818 umem_free(zgd, sizeof (*zgd));
1822 ztest_get_data(void *arg, lr_write_t *lr, char *buf, zio_t *zio)
1824 ztest_ds_t *zd = arg;
1825 objset_t *os = zd->zd_os;
1826 uint64_t object = lr->lr_foid;
1827 uint64_t offset = lr->lr_offset;
1828 uint64_t size = lr->lr_length;
1829 blkptr_t *bp = &lr->lr_blkptr;
1830 uint64_t txg = lr->lr_common.lrc_txg;
1832 dmu_object_info_t doi;
1837 ztest_object_lock(zd, object, RL_READER);
1838 error = dmu_bonus_hold(os, object, FTAG, &db);
1840 ztest_object_unlock(zd, object);
1844 crtxg = ztest_bt_bonus(db)->bt_crtxg;
1846 if (crtxg == 0 || crtxg > txg) {
1847 dmu_buf_rele(db, FTAG);
1848 ztest_object_unlock(zd, object);
1852 dmu_object_info_from_db(db, &doi);
1853 dmu_buf_rele(db, FTAG);
1856 zgd = umem_zalloc(sizeof (*zgd), UMEM_NOFAIL);
1857 zgd->zgd_zilog = zd->zd_zilog;
1858 zgd->zgd_private = zd;
1860 if (buf != NULL) { /* immediate write */
1861 zgd->zgd_rl = ztest_range_lock(zd, object, offset, size,
1864 error = dmu_read(os, object, offset, size, buf,
1865 DMU_READ_NO_PREFETCH);
1868 size = doi.doi_data_block_size;
1870 offset = P2ALIGN(offset, size);
1872 ASSERT(offset < size);
1876 zgd->zgd_rl = ztest_range_lock(zd, object, offset, size,
1879 error = dmu_buf_hold(os, object, offset, zgd, &db,
1880 DMU_READ_NO_PREFETCH);
1883 blkptr_t *obp = dmu_buf_get_blkptr(db);
1885 ASSERT(BP_IS_HOLE(bp));
1892 ASSERT(db->db_offset == offset);
1893 ASSERT(db->db_size == size);
1895 error = dmu_sync(zio, lr->lr_common.lrc_txg,
1896 ztest_get_done, zgd);
1903 ztest_get_done(zgd, error);
1909 ztest_lr_alloc(size_t lrsize, char *name)
1912 size_t namesize = name ? strlen(name) + 1 : 0;
1914 lr = umem_zalloc(lrsize + namesize, UMEM_NOFAIL);
1917 bcopy(name, lr + lrsize, namesize);
1923 ztest_lr_free(void *lr, size_t lrsize, char *name)
1925 size_t namesize = name ? strlen(name) + 1 : 0;
1927 umem_free(lr, lrsize + namesize);
1931 * Lookup a bunch of objects. Returns the number of objects not found.
1934 ztest_lookup(ztest_ds_t *zd, ztest_od_t *od, int count)
1939 ASSERT(_mutex_held(&zd->zd_dirobj_lock));
1941 for (int i = 0; i < count; i++, od++) {
1943 error = zap_lookup(zd->zd_os, od->od_dir, od->od_name,
1944 sizeof (uint64_t), 1, &od->od_object);
1946 ASSERT(error == ENOENT);
1947 ASSERT(od->od_object == 0);
1951 ztest_block_tag_t *bbt;
1952 dmu_object_info_t doi;
1954 ASSERT(od->od_object != 0);
1955 ASSERT(missing == 0); /* there should be no gaps */
1957 ztest_object_lock(zd, od->od_object, RL_READER);
1958 VERIFY3U(0, ==, dmu_bonus_hold(zd->zd_os,
1959 od->od_object, FTAG, &db));
1960 dmu_object_info_from_db(db, &doi);
1961 bbt = ztest_bt_bonus(db);
1962 ASSERT3U(bbt->bt_magic, ==, BT_MAGIC);
1963 od->od_type = doi.doi_type;
1964 od->od_blocksize = doi.doi_data_block_size;
1965 od->od_gen = bbt->bt_gen;
1966 dmu_buf_rele(db, FTAG);
1967 ztest_object_unlock(zd, od->od_object);
1975 ztest_create(ztest_ds_t *zd, ztest_od_t *od, int count)
1979 ASSERT(_mutex_held(&zd->zd_dirobj_lock));
1981 for (int i = 0; i < count; i++, od++) {
1988 lr_create_t *lr = ztest_lr_alloc(sizeof (*lr), od->od_name);
1990 lr->lr_doid = od->od_dir;
1991 lr->lr_foid = 0; /* 0 to allocate, > 0 to claim */
1992 lr->lrz_type = od->od_crtype;
1993 lr->lrz_blocksize = od->od_crblocksize;
1994 lr->lrz_ibshift = ztest_random_ibshift();
1995 lr->lrz_bonustype = DMU_OT_UINT64_OTHER;
1996 lr->lrz_bonuslen = dmu_bonus_max();
1997 lr->lr_gen = od->od_crgen;
1998 lr->lr_crtime[0] = time(NULL);
2000 if (ztest_replay_create(zd, lr, B_FALSE) != 0) {
2001 ASSERT(missing == 0);
2005 od->od_object = lr->lr_foid;
2006 od->od_type = od->od_crtype;
2007 od->od_blocksize = od->od_crblocksize;
2008 od->od_gen = od->od_crgen;
2009 ASSERT(od->od_object != 0);
2012 ztest_lr_free(lr, sizeof (*lr), od->od_name);
2019 ztest_remove(ztest_ds_t *zd, ztest_od_t *od, int count)
2024 ASSERT(_mutex_held(&zd->zd_dirobj_lock));
2028 for (int i = count - 1; i >= 0; i--, od--) {
2035 * No object was found.
2037 if (od->od_object == 0)
2040 lr_remove_t *lr = ztest_lr_alloc(sizeof (*lr), od->od_name);
2042 lr->lr_doid = od->od_dir;
2044 if ((error = ztest_replay_remove(zd, lr, B_FALSE)) != 0) {
2045 ASSERT3U(error, ==, ENOSPC);
2050 ztest_lr_free(lr, sizeof (*lr), od->od_name);
2057 ztest_write(ztest_ds_t *zd, uint64_t object, uint64_t offset, uint64_t size,
2063 lr = ztest_lr_alloc(sizeof (*lr) + size, NULL);
2065 lr->lr_foid = object;
2066 lr->lr_offset = offset;
2067 lr->lr_length = size;
2069 BP_ZERO(&lr->lr_blkptr);
2071 bcopy(data, lr + 1, size);
2073 error = ztest_replay_write(zd, lr, B_FALSE);
2075 ztest_lr_free(lr, sizeof (*lr) + size, NULL);
2081 ztest_truncate(ztest_ds_t *zd, uint64_t object, uint64_t offset, uint64_t size)
2086 lr = ztest_lr_alloc(sizeof (*lr), NULL);
2088 lr->lr_foid = object;
2089 lr->lr_offset = offset;
2090 lr->lr_length = size;
2092 error = ztest_replay_truncate(zd, lr, B_FALSE);
2094 ztest_lr_free(lr, sizeof (*lr), NULL);
2100 ztest_setattr(ztest_ds_t *zd, uint64_t object)
2105 lr = ztest_lr_alloc(sizeof (*lr), NULL);
2107 lr->lr_foid = object;
2111 error = ztest_replay_setattr(zd, lr, B_FALSE);
2113 ztest_lr_free(lr, sizeof (*lr), NULL);
2119 ztest_prealloc(ztest_ds_t *zd, uint64_t object, uint64_t offset, uint64_t size)
2121 objset_t *os = zd->zd_os;
2126 txg_wait_synced(dmu_objset_pool(os), 0);
2128 ztest_object_lock(zd, object, RL_READER);
2129 rl = ztest_range_lock(zd, object, offset, size, RL_WRITER);
2131 tx = dmu_tx_create(os);
2133 dmu_tx_hold_write(tx, object, offset, size);
2135 txg = ztest_tx_assign(tx, TXG_WAIT, FTAG);
2138 dmu_prealloc(os, object, offset, size, tx);
2140 txg_wait_synced(dmu_objset_pool(os), txg);
2142 (void) dmu_free_long_range(os, object, offset, size);
2145 ztest_range_unlock(rl);
2146 ztest_object_unlock(zd, object);
2150 ztest_io(ztest_ds_t *zd, uint64_t object, uint64_t offset)
2153 ztest_block_tag_t wbt;
2154 dmu_object_info_t doi;
2155 enum ztest_io_type io_type;
2159 VERIFY(dmu_object_info(zd->zd_os, object, &doi) == 0);
2160 blocksize = doi.doi_data_block_size;
2161 data = umem_alloc(blocksize, UMEM_NOFAIL);
2164 * Pick an i/o type at random, biased toward writing block tags.
2166 io_type = ztest_random(ZTEST_IO_TYPES);
2167 if (ztest_random(2) == 0)
2168 io_type = ZTEST_IO_WRITE_TAG;
2170 (void) rw_rdlock(&zd->zd_zilog_lock);
2174 case ZTEST_IO_WRITE_TAG:
2175 ztest_bt_generate(&wbt, zd->zd_os, object, offset, 0, 0, 0);
2176 (void) ztest_write(zd, object, offset, sizeof (wbt), &wbt);
2179 case ZTEST_IO_WRITE_PATTERN:
2180 (void) memset(data, 'a' + (object + offset) % 5, blocksize);
2181 if (ztest_random(2) == 0) {
2183 * Induce fletcher2 collisions to ensure that
2184 * zio_ddt_collision() detects and resolves them
2185 * when using fletcher2-verify for deduplication.
2187 ((uint64_t *)data)[0] ^= 1ULL << 63;
2188 ((uint64_t *)data)[4] ^= 1ULL << 63;
2190 (void) ztest_write(zd, object, offset, blocksize, data);
2193 case ZTEST_IO_WRITE_ZEROES:
2194 bzero(data, blocksize);
2195 (void) ztest_write(zd, object, offset, blocksize, data);
2198 case ZTEST_IO_TRUNCATE:
2199 (void) ztest_truncate(zd, object, offset, blocksize);
2202 case ZTEST_IO_SETATTR:
2203 (void) ztest_setattr(zd, object);
2206 case ZTEST_IO_REWRITE:
2207 (void) rw_rdlock(&ztest_name_lock);
2208 err = ztest_dsl_prop_set_uint64(zd->zd_name,
2209 ZFS_PROP_CHECKSUM, spa_dedup_checksum(ztest_spa),
2211 VERIFY(err == 0 || err == ENOSPC);
2212 err = ztest_dsl_prop_set_uint64(zd->zd_name,
2213 ZFS_PROP_COMPRESSION,
2214 ztest_random_dsl_prop(ZFS_PROP_COMPRESSION),
2216 VERIFY(err == 0 || err == ENOSPC);
2217 (void) rw_unlock(&ztest_name_lock);
2219 VERIFY0(dmu_read(zd->zd_os, object, offset, blocksize, data,
2220 DMU_READ_NO_PREFETCH));
2222 (void) ztest_write(zd, object, offset, blocksize, data);
2226 (void) rw_unlock(&zd->zd_zilog_lock);
2228 umem_free(data, blocksize);
2232 * Initialize an object description template.
2235 ztest_od_init(ztest_od_t *od, uint64_t id, char *tag, uint64_t index,
2236 dmu_object_type_t type, uint64_t blocksize, uint64_t gen)
2238 od->od_dir = ZTEST_DIROBJ;
2241 od->od_crtype = type;
2242 od->od_crblocksize = blocksize ? blocksize : ztest_random_blocksize();
2245 od->od_type = DMU_OT_NONE;
2246 od->od_blocksize = 0;
2249 (void) snprintf(od->od_name, sizeof (od->od_name), "%s(%lld)[%llu]",
2250 tag, (int64_t)id, index);
2254 * Lookup or create the objects for a test using the od template.
2255 * If the objects do not all exist, or if 'remove' is specified,
2256 * remove any existing objects and create new ones. Otherwise,
2257 * use the existing objects.
2260 ztest_object_init(ztest_ds_t *zd, ztest_od_t *od, size_t size, boolean_t remove)
2262 int count = size / sizeof (*od);
2265 VERIFY(mutex_lock(&zd->zd_dirobj_lock) == 0);
2266 if ((ztest_lookup(zd, od, count) != 0 || remove) &&
2267 (ztest_remove(zd, od, count) != 0 ||
2268 ztest_create(zd, od, count) != 0))
2271 VERIFY(mutex_unlock(&zd->zd_dirobj_lock) == 0);
2278 ztest_zil_commit(ztest_ds_t *zd, uint64_t id)
2280 zilog_t *zilog = zd->zd_zilog;
2282 (void) rw_rdlock(&zd->zd_zilog_lock);
2284 zil_commit(zilog, ztest_random(ZTEST_OBJECTS));
2287 * Remember the committed values in zd, which is in parent/child
2288 * shared memory. If we die, the next iteration of ztest_run()
2289 * will verify that the log really does contain this record.
2291 mutex_enter(&zilog->zl_lock);
2292 ASSERT(zd->zd_shared != NULL);
2293 ASSERT3U(zd->zd_shared->zd_seq, <=, zilog->zl_commit_lr_seq);
2294 zd->zd_shared->zd_seq = zilog->zl_commit_lr_seq;
2295 mutex_exit(&zilog->zl_lock);
2297 (void) rw_unlock(&zd->zd_zilog_lock);
2301 * This function is designed to simulate the operations that occur during a
2302 * mount/unmount operation. We hold the dataset across these operations in an
2303 * attempt to expose any implicit assumptions about ZIL management.
2307 ztest_zil_remount(ztest_ds_t *zd, uint64_t id)
2309 objset_t *os = zd->zd_os;
2312 * We grab the zd_dirobj_lock to ensure that no other thread is
2313 * updating the zil (i.e. adding in-memory log records) and the
2314 * zd_zilog_lock to block any I/O.
2316 VERIFY0(mutex_lock(&zd->zd_dirobj_lock));
2317 (void) rw_wrlock(&zd->zd_zilog_lock);
2319 /* zfsvfs_teardown() */
2320 zil_close(zd->zd_zilog);
2322 /* zfsvfs_setup() */
2323 VERIFY(zil_open(os, ztest_get_data) == zd->zd_zilog);
2324 zil_replay(os, zd, ztest_replay_vector);
2326 (void) rw_unlock(&zd->zd_zilog_lock);
2327 VERIFY(mutex_unlock(&zd->zd_dirobj_lock) == 0);
2331 * Verify that we can't destroy an active pool, create an existing pool,
2332 * or create a pool with a bad vdev spec.
2336 ztest_spa_create_destroy(ztest_ds_t *zd, uint64_t id)
2338 ztest_shared_opts_t *zo = &ztest_opts;
2343 * Attempt to create using a bad file.
2345 nvroot = make_vdev_root("/dev/bogus", NULL, NULL, 0, 0, 0, 0, 0, 1);
2346 VERIFY3U(ENOENT, ==,
2347 spa_create("ztest_bad_file", nvroot, NULL, NULL));
2348 nvlist_free(nvroot);
2351 * Attempt to create using a bad mirror.
2353 nvroot = make_vdev_root("/dev/bogus", NULL, NULL, 0, 0, 0, 0, 2, 1);
2354 VERIFY3U(ENOENT, ==,
2355 spa_create("ztest_bad_mirror", nvroot, NULL, NULL));
2356 nvlist_free(nvroot);
2359 * Attempt to create an existing pool. It shouldn't matter
2360 * what's in the nvroot; we should fail with EEXIST.
2362 (void) rw_rdlock(&ztest_name_lock);
2363 nvroot = make_vdev_root("/dev/bogus", NULL, NULL, 0, 0, 0, 0, 0, 1);
2364 VERIFY3U(EEXIST, ==, spa_create(zo->zo_pool, nvroot, NULL, NULL));
2365 nvlist_free(nvroot);
2366 VERIFY3U(0, ==, spa_open(zo->zo_pool, &spa, FTAG));
2367 VERIFY3U(EBUSY, ==, spa_destroy(zo->zo_pool));
2368 spa_close(spa, FTAG);
2370 (void) rw_unlock(&ztest_name_lock);
2375 ztest_spa_upgrade(ztest_ds_t *zd, uint64_t id)
2378 uint64_t initial_version = SPA_VERSION_INITIAL;
2379 uint64_t version, newversion;
2380 nvlist_t *nvroot, *props;
2383 VERIFY0(mutex_lock(&ztest_vdev_lock));
2384 name = kmem_asprintf("%s_upgrade", ztest_opts.zo_pool);
2387 * Clean up from previous runs.
2389 (void) spa_destroy(name);
2391 nvroot = make_vdev_root(NULL, NULL, name, ztest_opts.zo_vdev_size, 0,
2392 0, ztest_opts.zo_raidz, ztest_opts.zo_mirrors, 1);
2395 * If we're configuring a RAIDZ device then make sure that the
2396 * the initial version is capable of supporting that feature.
2398 switch (ztest_opts.zo_raidz_parity) {
2401 initial_version = SPA_VERSION_INITIAL;
2404 initial_version = SPA_VERSION_RAIDZ2;
2407 initial_version = SPA_VERSION_RAIDZ3;
2412 * Create a pool with a spa version that can be upgraded. Pick
2413 * a value between initial_version and SPA_VERSION_BEFORE_FEATURES.
2416 version = ztest_random_spa_version(initial_version);
2417 } while (version > SPA_VERSION_BEFORE_FEATURES);
2419 props = fnvlist_alloc();
2420 fnvlist_add_uint64(props,
2421 zpool_prop_to_name(ZPOOL_PROP_VERSION), version);
2422 VERIFY0(spa_create(name, nvroot, props, NULL));
2423 fnvlist_free(nvroot);
2424 fnvlist_free(props);
2426 VERIFY0(spa_open(name, &spa, FTAG));
2427 VERIFY3U(spa_version(spa), ==, version);
2428 newversion = ztest_random_spa_version(version + 1);
2430 if (ztest_opts.zo_verbose >= 4) {
2431 (void) printf("upgrading spa version from %llu to %llu\n",
2432 (u_longlong_t)version, (u_longlong_t)newversion);
2435 spa_upgrade(spa, newversion);
2436 VERIFY3U(spa_version(spa), >, version);
2437 VERIFY3U(spa_version(spa), ==, fnvlist_lookup_uint64(spa->spa_config,
2438 zpool_prop_to_name(ZPOOL_PROP_VERSION)));
2439 spa_close(spa, FTAG);
2442 VERIFY0(mutex_unlock(&ztest_vdev_lock));
2446 vdev_lookup_by_path(vdev_t *vd, const char *path)
2450 if (vd->vdev_path != NULL && strcmp(path, vd->vdev_path) == 0)
2453 for (int c = 0; c < vd->vdev_children; c++)
2454 if ((mvd = vdev_lookup_by_path(vd->vdev_child[c], path)) !=
2462 * Find the first available hole which can be used as a top-level.
2465 find_vdev_hole(spa_t *spa)
2467 vdev_t *rvd = spa->spa_root_vdev;
2470 ASSERT(spa_config_held(spa, SCL_VDEV, RW_READER) == SCL_VDEV);
2472 for (c = 0; c < rvd->vdev_children; c++) {
2473 vdev_t *cvd = rvd->vdev_child[c];
2475 if (cvd->vdev_ishole)
2482 * Verify that vdev_add() works as expected.
2486 ztest_vdev_add_remove(ztest_ds_t *zd, uint64_t id)
2488 ztest_shared_t *zs = ztest_shared;
2489 spa_t *spa = ztest_spa;
2495 VERIFY(mutex_lock(&ztest_vdev_lock) == 0);
2496 leaves = MAX(zs->zs_mirrors + zs->zs_splits, 1) * ztest_opts.zo_raidz;
2498 spa_config_enter(spa, SCL_VDEV, FTAG, RW_READER);
2500 ztest_shared->zs_vdev_next_leaf = find_vdev_hole(spa) * leaves;
2503 * If we have slogs then remove them 1/4 of the time.
2505 if (spa_has_slogs(spa) && ztest_random(4) == 0) {
2507 * Grab the guid from the head of the log class rotor.
2509 guid = spa_log_class(spa)->mc_rotor->mg_vd->vdev_guid;
2511 spa_config_exit(spa, SCL_VDEV, FTAG);
2514 * We have to grab the zs_name_lock as writer to
2515 * prevent a race between removing a slog (dmu_objset_find)
2516 * and destroying a dataset. Removing the slog will
2517 * grab a reference on the dataset which may cause
2518 * dmu_objset_destroy() to fail with EBUSY thus
2519 * leaving the dataset in an inconsistent state.
2521 VERIFY(rw_wrlock(&ztest_name_lock) == 0);
2522 error = spa_vdev_remove(spa, guid, B_FALSE);
2523 VERIFY(rw_unlock(&ztest_name_lock) == 0);
2525 if (error && error != EEXIST)
2526 fatal(0, "spa_vdev_remove() = %d", error);
2528 spa_config_exit(spa, SCL_VDEV, FTAG);
2531 * Make 1/4 of the devices be log devices.
2533 nvroot = make_vdev_root(NULL, NULL, NULL,
2534 ztest_opts.zo_vdev_size, 0,
2535 ztest_random(4) == 0, ztest_opts.zo_raidz,
2538 error = spa_vdev_add(spa, nvroot);
2539 nvlist_free(nvroot);
2541 if (error == ENOSPC)
2542 ztest_record_enospc("spa_vdev_add");
2543 else if (error != 0)
2544 fatal(0, "spa_vdev_add() = %d", error);
2547 VERIFY(mutex_unlock(&ztest_vdev_lock) == 0);
2551 * Verify that adding/removing aux devices (l2arc, hot spare) works as expected.
2555 ztest_vdev_aux_add_remove(ztest_ds_t *zd, uint64_t id)
2557 ztest_shared_t *zs = ztest_shared;
2558 spa_t *spa = ztest_spa;
2559 vdev_t *rvd = spa->spa_root_vdev;
2560 spa_aux_vdev_t *sav;
2565 if (ztest_random(2) == 0) {
2566 sav = &spa->spa_spares;
2567 aux = ZPOOL_CONFIG_SPARES;
2569 sav = &spa->spa_l2cache;
2570 aux = ZPOOL_CONFIG_L2CACHE;
2573 VERIFY(mutex_lock(&ztest_vdev_lock) == 0);
2575 spa_config_enter(spa, SCL_VDEV, FTAG, RW_READER);
2577 if (sav->sav_count != 0 && ztest_random(4) == 0) {
2579 * Pick a random device to remove.
2581 guid = sav->sav_vdevs[ztest_random(sav->sav_count)]->vdev_guid;
2584 * Find an unused device we can add.
2586 zs->zs_vdev_aux = 0;
2588 char path[MAXPATHLEN];
2590 (void) snprintf(path, sizeof (path), ztest_aux_template,
2591 ztest_opts.zo_dir, ztest_opts.zo_pool, aux,
2593 for (c = 0; c < sav->sav_count; c++)
2594 if (strcmp(sav->sav_vdevs[c]->vdev_path,
2597 if (c == sav->sav_count &&
2598 vdev_lookup_by_path(rvd, path) == NULL)
2604 spa_config_exit(spa, SCL_VDEV, FTAG);
2610 nvlist_t *nvroot = make_vdev_root(NULL, aux, NULL,
2611 (ztest_opts.zo_vdev_size * 5) / 4, 0, 0, 0, 0, 1);
2612 error = spa_vdev_add(spa, nvroot);
2614 fatal(0, "spa_vdev_add(%p) = %d", nvroot, error);
2615 nvlist_free(nvroot);
2618 * Remove an existing device. Sometimes, dirty its
2619 * vdev state first to make sure we handle removal
2620 * of devices that have pending state changes.
2622 if (ztest_random(2) == 0)
2623 (void) vdev_online(spa, guid, 0, NULL);
2625 error = spa_vdev_remove(spa, guid, B_FALSE);
2626 if (error != 0 && error != EBUSY)
2627 fatal(0, "spa_vdev_remove(%llu) = %d", guid, error);
2630 VERIFY(mutex_unlock(&ztest_vdev_lock) == 0);
2634 * split a pool if it has mirror tlvdevs
2638 ztest_split_pool(ztest_ds_t *zd, uint64_t id)
2640 ztest_shared_t *zs = ztest_shared;
2641 spa_t *spa = ztest_spa;
2642 vdev_t *rvd = spa->spa_root_vdev;
2643 nvlist_t *tree, **child, *config, *split, **schild;
2644 uint_t c, children, schildren = 0, lastlogid = 0;
2647 VERIFY(mutex_lock(&ztest_vdev_lock) == 0);
2649 /* ensure we have a useable config; mirrors of raidz aren't supported */
2650 if (zs->zs_mirrors < 3 || ztest_opts.zo_raidz > 1) {
2651 VERIFY(mutex_unlock(&ztest_vdev_lock) == 0);
2655 /* clean up the old pool, if any */
2656 (void) spa_destroy("splitp");
2658 spa_config_enter(spa, SCL_VDEV, FTAG, RW_READER);
2660 /* generate a config from the existing config */
2661 mutex_enter(&spa->spa_props_lock);
2662 VERIFY(nvlist_lookup_nvlist(spa->spa_config, ZPOOL_CONFIG_VDEV_TREE,
2664 mutex_exit(&spa->spa_props_lock);
2666 VERIFY(nvlist_lookup_nvlist_array(tree, ZPOOL_CONFIG_CHILDREN, &child,
2669 schild = malloc(rvd->vdev_children * sizeof (nvlist_t *));
2670 for (c = 0; c < children; c++) {
2671 vdev_t *tvd = rvd->vdev_child[c];
2675 if (tvd->vdev_islog || tvd->vdev_ops == &vdev_hole_ops) {
2676 VERIFY(nvlist_alloc(&schild[schildren], NV_UNIQUE_NAME,
2678 VERIFY(nvlist_add_string(schild[schildren],
2679 ZPOOL_CONFIG_TYPE, VDEV_TYPE_HOLE) == 0);
2680 VERIFY(nvlist_add_uint64(schild[schildren],
2681 ZPOOL_CONFIG_IS_HOLE, 1) == 0);
2683 lastlogid = schildren;
2688 VERIFY(nvlist_lookup_nvlist_array(child[c],
2689 ZPOOL_CONFIG_CHILDREN, &mchild, &mchildren) == 0);
2690 VERIFY(nvlist_dup(mchild[0], &schild[schildren++], 0) == 0);
2693 /* OK, create a config that can be used to split */
2694 VERIFY(nvlist_alloc(&split, NV_UNIQUE_NAME, 0) == 0);
2695 VERIFY(nvlist_add_string(split, ZPOOL_CONFIG_TYPE,
2696 VDEV_TYPE_ROOT) == 0);
2697 VERIFY(nvlist_add_nvlist_array(split, ZPOOL_CONFIG_CHILDREN, schild,
2698 lastlogid != 0 ? lastlogid : schildren) == 0);
2700 VERIFY(nvlist_alloc(&config, NV_UNIQUE_NAME, 0) == 0);
2701 VERIFY(nvlist_add_nvlist(config, ZPOOL_CONFIG_VDEV_TREE, split) == 0);
2703 for (c = 0; c < schildren; c++)
2704 nvlist_free(schild[c]);
2708 spa_config_exit(spa, SCL_VDEV, FTAG);
2710 (void) rw_wrlock(&ztest_name_lock);
2711 error = spa_vdev_split_mirror(spa, "splitp", config, NULL, B_FALSE);
2712 (void) rw_unlock(&ztest_name_lock);
2714 nvlist_free(config);
2717 (void) printf("successful split - results:\n");
2718 mutex_enter(&spa_namespace_lock);
2719 show_pool_stats(spa);
2720 show_pool_stats(spa_lookup("splitp"));
2721 mutex_exit(&spa_namespace_lock);
2725 VERIFY(mutex_unlock(&ztest_vdev_lock) == 0);
2730 * Verify that we can attach and detach devices.
2734 ztest_vdev_attach_detach(ztest_ds_t *zd, uint64_t id)
2736 ztest_shared_t *zs = ztest_shared;
2737 spa_t *spa = ztest_spa;
2738 spa_aux_vdev_t *sav = &spa->spa_spares;
2739 vdev_t *rvd = spa->spa_root_vdev;
2740 vdev_t *oldvd, *newvd, *pvd;
2744 uint64_t ashift = ztest_get_ashift();
2745 uint64_t oldguid, pguid;
2746 uint64_t oldsize, newsize;
2747 char oldpath[MAXPATHLEN], newpath[MAXPATHLEN];
2749 int oldvd_has_siblings = B_FALSE;
2750 int newvd_is_spare = B_FALSE;
2752 int error, expected_error;
2754 VERIFY(mutex_lock(&ztest_vdev_lock) == 0);
2755 leaves = MAX(zs->zs_mirrors, 1) * ztest_opts.zo_raidz;
2757 spa_config_enter(spa, SCL_VDEV, FTAG, RW_READER);
2760 * Decide whether to do an attach or a replace.
2762 replacing = ztest_random(2);
2765 * Pick a random top-level vdev.
2767 top = ztest_random_vdev_top(spa, B_TRUE);
2770 * Pick a random leaf within it.
2772 leaf = ztest_random(leaves);
2777 oldvd = rvd->vdev_child[top];
2778 if (zs->zs_mirrors >= 1) {
2779 ASSERT(oldvd->vdev_ops == &vdev_mirror_ops);
2780 ASSERT(oldvd->vdev_children >= zs->zs_mirrors);
2781 oldvd = oldvd->vdev_child[leaf / ztest_opts.zo_raidz];
2783 if (ztest_opts.zo_raidz > 1) {
2784 ASSERT(oldvd->vdev_ops == &vdev_raidz_ops);
2785 ASSERT(oldvd->vdev_children == ztest_opts.zo_raidz);
2786 oldvd = oldvd->vdev_child[leaf % ztest_opts.zo_raidz];
2790 * If we're already doing an attach or replace, oldvd may be a
2791 * mirror vdev -- in which case, pick a random child.
2793 while (oldvd->vdev_children != 0) {
2794 oldvd_has_siblings = B_TRUE;
2795 ASSERT(oldvd->vdev_children >= 2);
2796 oldvd = oldvd->vdev_child[ztest_random(oldvd->vdev_children)];
2799 oldguid = oldvd->vdev_guid;
2800 oldsize = vdev_get_min_asize(oldvd);
2801 oldvd_is_log = oldvd->vdev_top->vdev_islog;
2802 (void) strcpy(oldpath, oldvd->vdev_path);
2803 pvd = oldvd->vdev_parent;
2804 pguid = pvd->vdev_guid;
2807 * If oldvd has siblings, then half of the time, detach it.
2809 if (oldvd_has_siblings && ztest_random(2) == 0) {
2810 spa_config_exit(spa, SCL_VDEV, FTAG);
2811 error = spa_vdev_detach(spa, oldguid, pguid, B_FALSE);
2812 if (error != 0 && error != ENODEV && error != EBUSY &&
2814 fatal(0, "detach (%s) returned %d", oldpath, error);
2815 VERIFY(mutex_unlock(&ztest_vdev_lock) == 0);
2820 * For the new vdev, choose with equal probability between the two
2821 * standard paths (ending in either 'a' or 'b') or a random hot spare.
2823 if (sav->sav_count != 0 && ztest_random(3) == 0) {
2824 newvd = sav->sav_vdevs[ztest_random(sav->sav_count)];
2825 newvd_is_spare = B_TRUE;
2826 (void) strcpy(newpath, newvd->vdev_path);
2828 (void) snprintf(newpath, sizeof (newpath), ztest_dev_template,
2829 ztest_opts.zo_dir, ztest_opts.zo_pool,
2830 top * leaves + leaf);
2831 if (ztest_random(2) == 0)
2832 newpath[strlen(newpath) - 1] = 'b';
2833 newvd = vdev_lookup_by_path(rvd, newpath);
2837 newsize = vdev_get_min_asize(newvd);
2840 * Make newsize a little bigger or smaller than oldsize.
2841 * If it's smaller, the attach should fail.
2842 * If it's larger, and we're doing a replace,
2843 * we should get dynamic LUN growth when we're done.
2845 newsize = 10 * oldsize / (9 + ztest_random(3));
2849 * If pvd is not a mirror or root, the attach should fail with ENOTSUP,
2850 * unless it's a replace; in that case any non-replacing parent is OK.
2852 * If newvd is already part of the pool, it should fail with EBUSY.
2854 * If newvd is too small, it should fail with EOVERFLOW.
2856 if (pvd->vdev_ops != &vdev_mirror_ops &&
2857 pvd->vdev_ops != &vdev_root_ops && (!replacing ||
2858 pvd->vdev_ops == &vdev_replacing_ops ||
2859 pvd->vdev_ops == &vdev_spare_ops))
2860 expected_error = ENOTSUP;
2861 else if (newvd_is_spare && (!replacing || oldvd_is_log))
2862 expected_error = ENOTSUP;
2863 else if (newvd == oldvd)
2864 expected_error = replacing ? 0 : EBUSY;
2865 else if (vdev_lookup_by_path(rvd, newpath) != NULL)
2866 expected_error = EBUSY;
2867 else if (newsize < oldsize)
2868 expected_error = EOVERFLOW;
2869 else if (ashift > oldvd->vdev_top->vdev_ashift)
2870 expected_error = EDOM;
2874 spa_config_exit(spa, SCL_VDEV, FTAG);
2877 * Build the nvlist describing newpath.
2879 root = make_vdev_root(newpath, NULL, NULL, newvd == NULL ? newsize : 0,
2880 ashift, 0, 0, 0, 1);
2882 error = spa_vdev_attach(spa, oldguid, root, replacing);
2887 * If our parent was the replacing vdev, but the replace completed,
2888 * then instead of failing with ENOTSUP we may either succeed,
2889 * fail with ENODEV, or fail with EOVERFLOW.
2891 if (expected_error == ENOTSUP &&
2892 (error == 0 || error == ENODEV || error == EOVERFLOW))
2893 expected_error = error;
2896 * If someone grew the LUN, the replacement may be too small.
2898 if (error == EOVERFLOW || error == EBUSY)
2899 expected_error = error;
2901 /* XXX workaround 6690467 */
2902 if (error != expected_error && expected_error != EBUSY) {
2903 fatal(0, "attach (%s %llu, %s %llu, %d) "
2904 "returned %d, expected %d",
2905 oldpath, oldsize, newpath,
2906 newsize, replacing, error, expected_error);
2909 VERIFY(mutex_unlock(&ztest_vdev_lock) == 0);
2913 * Callback function which expands the physical size of the vdev.
2916 grow_vdev(vdev_t *vd, void *arg)
2918 spa_t *spa = vd->vdev_spa;
2919 size_t *newsize = arg;
2923 ASSERT(spa_config_held(spa, SCL_STATE, RW_READER) == SCL_STATE);
2924 ASSERT(vd->vdev_ops->vdev_op_leaf);
2926 if ((fd = open(vd->vdev_path, O_RDWR)) == -1)
2929 fsize = lseek(fd, 0, SEEK_END);
2930 (void) ftruncate(fd, *newsize);
2932 if (ztest_opts.zo_verbose >= 6) {
2933 (void) printf("%s grew from %lu to %lu bytes\n",
2934 vd->vdev_path, (ulong_t)fsize, (ulong_t)*newsize);
2941 * Callback function which expands a given vdev by calling vdev_online().
2945 online_vdev(vdev_t *vd, void *arg)
2947 spa_t *spa = vd->vdev_spa;
2948 vdev_t *tvd = vd->vdev_top;
2949 uint64_t guid = vd->vdev_guid;
2950 uint64_t generation = spa->spa_config_generation + 1;
2951 vdev_state_t newstate = VDEV_STATE_UNKNOWN;
2954 ASSERT(spa_config_held(spa, SCL_STATE, RW_READER) == SCL_STATE);
2955 ASSERT(vd->vdev_ops->vdev_op_leaf);
2957 /* Calling vdev_online will initialize the new metaslabs */
2958 spa_config_exit(spa, SCL_STATE, spa);
2959 error = vdev_online(spa, guid, ZFS_ONLINE_EXPAND, &newstate);
2960 spa_config_enter(spa, SCL_STATE, spa, RW_READER);
2963 * If vdev_online returned an error or the underlying vdev_open
2964 * failed then we abort the expand. The only way to know that
2965 * vdev_open fails is by checking the returned newstate.
2967 if (error || newstate != VDEV_STATE_HEALTHY) {
2968 if (ztest_opts.zo_verbose >= 5) {
2969 (void) printf("Unable to expand vdev, state %llu, "
2970 "error %d\n", (u_longlong_t)newstate, error);
2974 ASSERT3U(newstate, ==, VDEV_STATE_HEALTHY);
2977 * Since we dropped the lock we need to ensure that we're
2978 * still talking to the original vdev. It's possible this
2979 * vdev may have been detached/replaced while we were
2980 * trying to online it.
2982 if (generation != spa->spa_config_generation) {
2983 if (ztest_opts.zo_verbose >= 5) {
2984 (void) printf("vdev configuration has changed, "
2985 "guid %llu, state %llu, expected gen %llu, "
2988 (u_longlong_t)tvd->vdev_state,
2989 (u_longlong_t)generation,
2990 (u_longlong_t)spa->spa_config_generation);
2998 * Traverse the vdev tree calling the supplied function.
2999 * We continue to walk the tree until we either have walked all
3000 * children or we receive a non-NULL return from the callback.
3001 * If a NULL callback is passed, then we just return back the first
3002 * leaf vdev we encounter.
3005 vdev_walk_tree(vdev_t *vd, vdev_t *(*func)(vdev_t *, void *), void *arg)
3007 if (vd->vdev_ops->vdev_op_leaf) {
3011 return (func(vd, arg));
3014 for (uint_t c = 0; c < vd->vdev_children; c++) {
3015 vdev_t *cvd = vd->vdev_child[c];
3016 if ((cvd = vdev_walk_tree(cvd, func, arg)) != NULL)
3023 * Verify that dynamic LUN growth works as expected.
3027 ztest_vdev_LUN_growth(ztest_ds_t *zd, uint64_t id)
3029 spa_t *spa = ztest_spa;
3031 metaslab_class_t *mc;
3032 metaslab_group_t *mg;
3033 size_t psize, newsize;
3035 uint64_t old_class_space, new_class_space, old_ms_count, new_ms_count;
3037 VERIFY(mutex_lock(&ztest_vdev_lock) == 0);
3038 spa_config_enter(spa, SCL_STATE, spa, RW_READER);
3040 top = ztest_random_vdev_top(spa, B_TRUE);
3042 tvd = spa->spa_root_vdev->vdev_child[top];
3045 old_ms_count = tvd->vdev_ms_count;
3046 old_class_space = metaslab_class_get_space(mc);
3049 * Determine the size of the first leaf vdev associated with
3050 * our top-level device.
3052 vd = vdev_walk_tree(tvd, NULL, NULL);
3053 ASSERT3P(vd, !=, NULL);
3054 ASSERT(vd->vdev_ops->vdev_op_leaf);
3056 psize = vd->vdev_psize;
3059 * We only try to expand the vdev if it's healthy, less than 4x its
3060 * original size, and it has a valid psize.
3062 if (tvd->vdev_state != VDEV_STATE_HEALTHY ||
3063 psize == 0 || psize >= 4 * ztest_opts.zo_vdev_size) {
3064 spa_config_exit(spa, SCL_STATE, spa);
3065 VERIFY(mutex_unlock(&ztest_vdev_lock) == 0);
3069 newsize = psize + psize / 8;
3070 ASSERT3U(newsize, >, psize);
3072 if (ztest_opts.zo_verbose >= 6) {
3073 (void) printf("Expanding LUN %s from %lu to %lu\n",
3074 vd->vdev_path, (ulong_t)psize, (ulong_t)newsize);
3078 * Growing the vdev is a two step process:
3079 * 1). expand the physical size (i.e. relabel)
3080 * 2). online the vdev to create the new metaslabs
3082 if (vdev_walk_tree(tvd, grow_vdev, &newsize) != NULL ||
3083 vdev_walk_tree(tvd, online_vdev, NULL) != NULL ||
3084 tvd->vdev_state != VDEV_STATE_HEALTHY) {
3085 if (ztest_opts.zo_verbose >= 5) {
3086 (void) printf("Could not expand LUN because "
3087 "the vdev configuration changed.\n");
3089 spa_config_exit(spa, SCL_STATE, spa);
3090 VERIFY(mutex_unlock(&ztest_vdev_lock) == 0);
3094 spa_config_exit(spa, SCL_STATE, spa);
3097 * Expanding the LUN will update the config asynchronously,
3098 * thus we must wait for the async thread to complete any
3099 * pending tasks before proceeding.
3103 mutex_enter(&spa->spa_async_lock);
3104 done = (spa->spa_async_thread == NULL && !spa->spa_async_tasks);
3105 mutex_exit(&spa->spa_async_lock);
3108 txg_wait_synced(spa_get_dsl(spa), 0);
3109 (void) poll(NULL, 0, 100);
3112 spa_config_enter(spa, SCL_STATE, spa, RW_READER);
3114 tvd = spa->spa_root_vdev->vdev_child[top];
3115 new_ms_count = tvd->vdev_ms_count;
3116 new_class_space = metaslab_class_get_space(mc);
3118 if (tvd->vdev_mg != mg || mg->mg_class != mc) {
3119 if (ztest_opts.zo_verbose >= 5) {
3120 (void) printf("Could not verify LUN expansion due to "
3121 "intervening vdev offline or remove.\n");
3123 spa_config_exit(spa, SCL_STATE, spa);
3124 VERIFY(mutex_unlock(&ztest_vdev_lock) == 0);
3129 * Make sure we were able to grow the vdev.
3131 if (new_ms_count <= old_ms_count)
3132 fatal(0, "LUN expansion failed: ms_count %llu <= %llu\n",
3133 old_ms_count, new_ms_count);
3136 * Make sure we were able to grow the pool.
3138 if (new_class_space <= old_class_space)
3139 fatal(0, "LUN expansion failed: class_space %llu <= %llu\n",
3140 old_class_space, new_class_space);
3142 if (ztest_opts.zo_verbose >= 5) {
3143 char oldnumbuf[6], newnumbuf[6];
3145 nicenum(old_class_space, oldnumbuf);
3146 nicenum(new_class_space, newnumbuf);
3147 (void) printf("%s grew from %s to %s\n",
3148 spa->spa_name, oldnumbuf, newnumbuf);
3151 spa_config_exit(spa, SCL_STATE, spa);
3152 VERIFY(mutex_unlock(&ztest_vdev_lock) == 0);
3156 * Verify that dmu_objset_{create,destroy,open,close} work as expected.
3160 ztest_objset_create_cb(objset_t *os, void *arg, cred_t *cr, dmu_tx_t *tx)
3163 * Create the objects common to all ztest datasets.
3165 VERIFY(zap_create_claim(os, ZTEST_DIROBJ,
3166 DMU_OT_ZAP_OTHER, DMU_OT_NONE, 0, tx) == 0);
3170 ztest_dataset_create(char *dsname)
3172 uint64_t zilset = ztest_random(100);
3173 int err = dmu_objset_create(dsname, DMU_OST_OTHER, 0,
3174 ztest_objset_create_cb, NULL);
3176 if (err || zilset < 80)
3179 if (ztest_opts.zo_verbose >= 6)
3180 (void) printf("Setting dataset %s to sync always\n", dsname);
3181 return (ztest_dsl_prop_set_uint64(dsname, ZFS_PROP_SYNC,
3182 ZFS_SYNC_ALWAYS, B_FALSE));
3187 ztest_objset_destroy_cb(const char *name, void *arg)
3190 dmu_object_info_t doi;
3194 * Verify that the dataset contains a directory object.
3196 VERIFY0(dmu_objset_own(name, DMU_OST_OTHER, B_TRUE, FTAG, &os));
3197 error = dmu_object_info(os, ZTEST_DIROBJ, &doi);
3198 if (error != ENOENT) {
3199 /* We could have crashed in the middle of destroying it */
3201 ASSERT3U(doi.doi_type, ==, DMU_OT_ZAP_OTHER);
3202 ASSERT3S(doi.doi_physical_blocks_512, >=, 0);
3204 dmu_objset_disown(os, FTAG);
3207 * Destroy the dataset.
3209 if (strchr(name, '@') != NULL) {
3210 VERIFY0(dsl_destroy_snapshot(name, B_FALSE));
3212 VERIFY0(dsl_destroy_head(name));
3218 ztest_snapshot_create(char *osname, uint64_t id)
3220 char snapname[MAXNAMELEN];
3223 (void) snprintf(snapname, sizeof (snapname), "%llu", (u_longlong_t)id);
3225 error = dmu_objset_snapshot_one(osname, snapname);
3226 if (error == ENOSPC) {
3227 ztest_record_enospc(FTAG);
3230 if (error != 0 && error != EEXIST) {
3231 fatal(0, "ztest_snapshot_create(%s@%s) = %d", osname,
3238 ztest_snapshot_destroy(char *osname, uint64_t id)
3240 char snapname[MAXNAMELEN];
3243 (void) snprintf(snapname, MAXNAMELEN, "%s@%llu", osname,
3246 error = dsl_destroy_snapshot(snapname, B_FALSE);
3247 if (error != 0 && error != ENOENT)
3248 fatal(0, "ztest_snapshot_destroy(%s) = %d", snapname, error);
3254 ztest_dmu_objset_create_destroy(ztest_ds_t *zd, uint64_t id)
3260 char name[MAXNAMELEN];
3263 (void) rw_rdlock(&ztest_name_lock);
3265 (void) snprintf(name, MAXNAMELEN, "%s/temp_%llu",
3266 ztest_opts.zo_pool, (u_longlong_t)id);
3269 * If this dataset exists from a previous run, process its replay log
3270 * half of the time. If we don't replay it, then dmu_objset_destroy()
3271 * (invoked from ztest_objset_destroy_cb()) should just throw it away.
3273 if (ztest_random(2) == 0 &&
3274 dmu_objset_own(name, DMU_OST_OTHER, B_FALSE, FTAG, &os) == 0) {
3275 ztest_zd_init(&zdtmp, NULL, os);
3276 zil_replay(os, &zdtmp, ztest_replay_vector);
3277 ztest_zd_fini(&zdtmp);
3278 dmu_objset_disown(os, FTAG);
3282 * There may be an old instance of the dataset we're about to
3283 * create lying around from a previous run. If so, destroy it
3284 * and all of its snapshots.
3286 (void) dmu_objset_find(name, ztest_objset_destroy_cb, NULL,
3287 DS_FIND_CHILDREN | DS_FIND_SNAPSHOTS);
3290 * Verify that the destroyed dataset is no longer in the namespace.
3292 VERIFY3U(ENOENT, ==, dmu_objset_own(name, DMU_OST_OTHER, B_TRUE,
3296 * Verify that we can create a new dataset.
3298 error = ztest_dataset_create(name);
3300 if (error == ENOSPC) {
3301 ztest_record_enospc(FTAG);
3302 (void) rw_unlock(&ztest_name_lock);
3305 fatal(0, "dmu_objset_create(%s) = %d", name, error);
3308 VERIFY0(dmu_objset_own(name, DMU_OST_OTHER, B_FALSE, FTAG, &os));
3310 ztest_zd_init(&zdtmp, NULL, os);
3313 * Open the intent log for it.
3315 zilog = zil_open(os, ztest_get_data);
3318 * Put some objects in there, do a little I/O to them,
3319 * and randomly take a couple of snapshots along the way.
3321 iters = ztest_random(5);
3322 for (int i = 0; i < iters; i++) {
3323 ztest_dmu_object_alloc_free(&zdtmp, id);
3324 if (ztest_random(iters) == 0)
3325 (void) ztest_snapshot_create(name, i);
3329 * Verify that we cannot create an existing dataset.
3331 VERIFY3U(EEXIST, ==,
3332 dmu_objset_create(name, DMU_OST_OTHER, 0, NULL, NULL));
3335 * Verify that we can hold an objset that is also owned.
3337 VERIFY3U(0, ==, dmu_objset_hold(name, FTAG, &os2));
3338 dmu_objset_rele(os2, FTAG);
3341 * Verify that we cannot own an objset that is already owned.
3344 dmu_objset_own(name, DMU_OST_OTHER, B_FALSE, FTAG, &os2));
3347 dmu_objset_disown(os, FTAG);
3348 ztest_zd_fini(&zdtmp);
3350 (void) rw_unlock(&ztest_name_lock);
3354 * Verify that dmu_snapshot_{create,destroy,open,close} work as expected.
3357 ztest_dmu_snapshot_create_destroy(ztest_ds_t *zd, uint64_t id)
3359 (void) rw_rdlock(&ztest_name_lock);
3360 (void) ztest_snapshot_destroy(zd->zd_name, id);
3361 (void) ztest_snapshot_create(zd->zd_name, id);
3362 (void) rw_unlock(&ztest_name_lock);
3366 * Cleanup non-standard snapshots and clones.
3369 ztest_dsl_dataset_cleanup(char *osname, uint64_t id)
3371 char snap1name[MAXNAMELEN];
3372 char clone1name[MAXNAMELEN];
3373 char snap2name[MAXNAMELEN];
3374 char clone2name[MAXNAMELEN];
3375 char snap3name[MAXNAMELEN];
3378 (void) snprintf(snap1name, MAXNAMELEN, "%s@s1_%llu", osname, id);
3379 (void) snprintf(clone1name, MAXNAMELEN, "%s/c1_%llu", osname, id);
3380 (void) snprintf(snap2name, MAXNAMELEN, "%s@s2_%llu", clone1name, id);
3381 (void) snprintf(clone2name, MAXNAMELEN, "%s/c2_%llu", osname, id);
3382 (void) snprintf(snap3name, MAXNAMELEN, "%s@s3_%llu", clone1name, id);
3384 error = dsl_destroy_head(clone2name);
3385 if (error && error != ENOENT)
3386 fatal(0, "dsl_destroy_head(%s) = %d", clone2name, error);
3387 error = dsl_destroy_snapshot(snap3name, B_FALSE);
3388 if (error && error != ENOENT)
3389 fatal(0, "dsl_destroy_snapshot(%s) = %d", snap3name, error);
3390 error = dsl_destroy_snapshot(snap2name, B_FALSE);
3391 if (error && error != ENOENT)
3392 fatal(0, "dsl_destroy_snapshot(%s) = %d", snap2name, error);
3393 error = dsl_destroy_head(clone1name);
3394 if (error && error != ENOENT)
3395 fatal(0, "dsl_destroy_head(%s) = %d", clone1name, error);
3396 error = dsl_destroy_snapshot(snap1name, B_FALSE);
3397 if (error && error != ENOENT)
3398 fatal(0, "dsl_destroy_snapshot(%s) = %d", snap1name, error);
3402 * Verify dsl_dataset_promote handles EBUSY
3405 ztest_dsl_dataset_promote_busy(ztest_ds_t *zd, uint64_t id)
3408 char snap1name[MAXNAMELEN];
3409 char clone1name[MAXNAMELEN];
3410 char snap2name[MAXNAMELEN];
3411 char clone2name[MAXNAMELEN];
3412 char snap3name[MAXNAMELEN];
3413 char *osname = zd->zd_name;
3416 (void) rw_rdlock(&ztest_name_lock);
3418 ztest_dsl_dataset_cleanup(osname, id);
3420 (void) snprintf(snap1name, MAXNAMELEN, "%s@s1_%llu", osname, id);
3421 (void) snprintf(clone1name, MAXNAMELEN, "%s/c1_%llu", osname, id);
3422 (void) snprintf(snap2name, MAXNAMELEN, "%s@s2_%llu", clone1name, id);
3423 (void) snprintf(clone2name, MAXNAMELEN, "%s/c2_%llu", osname, id);
3424 (void) snprintf(snap3name, MAXNAMELEN, "%s@s3_%llu", clone1name, id);
3426 error = dmu_objset_snapshot_one(osname, strchr(snap1name, '@') + 1);
3427 if (error && error != EEXIST) {
3428 if (error == ENOSPC) {
3429 ztest_record_enospc(FTAG);
3432 fatal(0, "dmu_take_snapshot(%s) = %d", snap1name, error);
3435 error = dmu_objset_clone(clone1name, snap1name);
3437 if (error == ENOSPC) {
3438 ztest_record_enospc(FTAG);
3441 fatal(0, "dmu_objset_create(%s) = %d", clone1name, error);
3444 error = dmu_objset_snapshot_one(clone1name, strchr(snap2name, '@') + 1);
3445 if (error && error != EEXIST) {
3446 if (error == ENOSPC) {
3447 ztest_record_enospc(FTAG);
3450 fatal(0, "dmu_open_snapshot(%s) = %d", snap2name, error);
3453 error = dmu_objset_snapshot_one(clone1name, strchr(snap3name, '@') + 1);
3454 if (error && error != EEXIST) {
3455 if (error == ENOSPC) {
3456 ztest_record_enospc(FTAG);
3459 fatal(0, "dmu_open_snapshot(%s) = %d", snap3name, error);
3462 error = dmu_objset_clone(clone2name, snap3name);
3464 if (error == ENOSPC) {
3465 ztest_record_enospc(FTAG);
3468 fatal(0, "dmu_objset_create(%s) = %d", clone2name, error);
3471 error = dmu_objset_own(snap2name, DMU_OST_ANY, B_TRUE, FTAG, &os);
3473 fatal(0, "dmu_objset_own(%s) = %d", snap2name, error);
3474 error = dsl_dataset_promote(clone2name, NULL);
3475 if (error == ENOSPC) {
3476 dmu_objset_disown(os, FTAG);
3477 ztest_record_enospc(FTAG);
3481 fatal(0, "dsl_dataset_promote(%s), %d, not EBUSY", clone2name,
3483 dmu_objset_disown(os, FTAG);
3486 ztest_dsl_dataset_cleanup(osname, id);
3488 (void) rw_unlock(&ztest_name_lock);
3492 * Verify that dmu_object_{alloc,free} work as expected.
3495 ztest_dmu_object_alloc_free(ztest_ds_t *zd, uint64_t id)
3498 int batchsize = sizeof (od) / sizeof (od[0]);
3500 for (int b = 0; b < batchsize; b++)
3501 ztest_od_init(&od[b], id, FTAG, b, DMU_OT_UINT64_OTHER, 0, 0);
3504 * Destroy the previous batch of objects, create a new batch,
3505 * and do some I/O on the new objects.
3507 if (ztest_object_init(zd, od, sizeof (od), B_TRUE) != 0)
3510 while (ztest_random(4 * batchsize) != 0)
3511 ztest_io(zd, od[ztest_random(batchsize)].od_object,
3512 ztest_random(ZTEST_RANGE_LOCKS) << SPA_MAXBLOCKSHIFT);
3516 * Verify that dmu_{read,write} work as expected.
3519 ztest_dmu_read_write(ztest_ds_t *zd, uint64_t id)
3521 objset_t *os = zd->zd_os;
3524 int i, freeit, error;
3526 bufwad_t *packbuf, *bigbuf, *pack, *bigH, *bigT;
3527 uint64_t packobj, packoff, packsize, bigobj, bigoff, bigsize;
3528 uint64_t chunksize = (1000 + ztest_random(1000)) * sizeof (uint64_t);
3529 uint64_t regions = 997;
3530 uint64_t stride = 123456789ULL;
3531 uint64_t width = 40;
3532 int free_percent = 5;
3535 * This test uses two objects, packobj and bigobj, that are always
3536 * updated together (i.e. in the same tx) so that their contents are
3537 * in sync and can be compared. Their contents relate to each other
3538 * in a simple way: packobj is a dense array of 'bufwad' structures,
3539 * while bigobj is a sparse array of the same bufwads. Specifically,
3540 * for any index n, there are three bufwads that should be identical:
3542 * packobj, at offset n * sizeof (bufwad_t)
3543 * bigobj, at the head of the nth chunk
3544 * bigobj, at the tail of the nth chunk
3546 * The chunk size is arbitrary. It doesn't have to be a power of two,
3547 * and it doesn't have any relation to the object blocksize.
3548 * The only requirement is that it can hold at least two bufwads.
3550 * Normally, we write the bufwad to each of these locations.
3551 * However, free_percent of the time we instead write zeroes to
3552 * packobj and perform a dmu_free_range() on bigobj. By comparing
3553 * bigobj to packobj, we can verify that the DMU is correctly
3554 * tracking which parts of an object are allocated and free,
3555 * and that the contents of the allocated blocks are correct.
3559 * Read the directory info. If it's the first time, set things up.
3561 ztest_od_init(&od[0], id, FTAG, 0, DMU_OT_UINT64_OTHER, 0, chunksize);
3562 ztest_od_init(&od[1], id, FTAG, 1, DMU_OT_UINT64_OTHER, 0, chunksize);
3564 if (ztest_object_init(zd, od, sizeof (od), B_FALSE) != 0)
3567 bigobj = od[0].od_object;
3568 packobj = od[1].od_object;
3569 chunksize = od[0].od_gen;
3570 ASSERT(chunksize == od[1].od_gen);
3573 * Prefetch a random chunk of the big object.
3574 * Our aim here is to get some async reads in flight
3575 * for blocks that we may free below; the DMU should
3576 * handle this race correctly.
3578 n = ztest_random(regions) * stride + ztest_random(width);
3579 s = 1 + ztest_random(2 * width - 1);
3580 dmu_prefetch(os, bigobj, n * chunksize, s * chunksize);
3583 * Pick a random index and compute the offsets into packobj and bigobj.
3585 n = ztest_random(regions) * stride + ztest_random(width);
3586 s = 1 + ztest_random(width - 1);
3588 packoff = n * sizeof (bufwad_t);
3589 packsize = s * sizeof (bufwad_t);
3591 bigoff = n * chunksize;
3592 bigsize = s * chunksize;
3594 packbuf = umem_alloc(packsize, UMEM_NOFAIL);
3595 bigbuf = umem_alloc(bigsize, UMEM_NOFAIL);
3598 * free_percent of the time, free a range of bigobj rather than
3601 freeit = (ztest_random(100) < free_percent);
3604 * Read the current contents of our objects.
3606 error = dmu_read(os, packobj, packoff, packsize, packbuf,
3609 error = dmu_read(os, bigobj, bigoff, bigsize, bigbuf,
3614 * Get a tx for the mods to both packobj and bigobj.
3616 tx = dmu_tx_create(os);
3618 dmu_tx_hold_write(tx, packobj, packoff, packsize);
3621 dmu_tx_hold_free(tx, bigobj, bigoff, bigsize);
3623 dmu_tx_hold_write(tx, bigobj, bigoff, bigsize);
3625 /* This accounts for setting the checksum/compression. */
3626 dmu_tx_hold_bonus(tx, bigobj);
3628 txg = ztest_tx_assign(tx, TXG_MIGHTWAIT, FTAG);
3630 umem_free(packbuf, packsize);
3631 umem_free(bigbuf, bigsize);
3635 enum zio_checksum cksum;
3637 cksum = (enum zio_checksum)
3638 ztest_random_dsl_prop(ZFS_PROP_CHECKSUM);
3639 } while (cksum >= ZIO_CHECKSUM_LEGACY_FUNCTIONS);
3640 dmu_object_set_checksum(os, bigobj, cksum, tx);
3642 enum zio_compress comp;
3644 comp = (enum zio_compress)
3645 ztest_random_dsl_prop(ZFS_PROP_COMPRESSION);
3646 } while (comp >= ZIO_COMPRESS_LEGACY_FUNCTIONS);
3647 dmu_object_set_compress(os, bigobj, comp, tx);
3650 * For each index from n to n + s, verify that the existing bufwad
3651 * in packobj matches the bufwads at the head and tail of the
3652 * corresponding chunk in bigobj. Then update all three bufwads
3653 * with the new values we want to write out.
3655 for (i = 0; i < s; i++) {
3657 pack = (bufwad_t *)((char *)packbuf + i * sizeof (bufwad_t));
3659 bigH = (bufwad_t *)((char *)bigbuf + i * chunksize);
3661 bigT = (bufwad_t *)((char *)bigH + chunksize) - 1;
3663 ASSERT((uintptr_t)bigH - (uintptr_t)bigbuf < bigsize);
3664 ASSERT((uintptr_t)bigT - (uintptr_t)bigbuf < bigsize);
3666 if (pack->bw_txg > txg)
3667 fatal(0, "future leak: got %llx, open txg is %llx",
3670 if (pack->bw_data != 0 && pack->bw_index != n + i)
3671 fatal(0, "wrong index: got %llx, wanted %llx+%llx",
3672 pack->bw_index, n, i);
3674 if (bcmp(pack, bigH, sizeof (bufwad_t)) != 0)
3675 fatal(0, "pack/bigH mismatch in %p/%p", pack, bigH);
3677 if (bcmp(pack, bigT, sizeof (bufwad_t)) != 0)
3678 fatal(0, "pack/bigT mismatch in %p/%p", pack, bigT);
3681 bzero(pack, sizeof (bufwad_t));
3683 pack->bw_index = n + i;
3685 pack->bw_data = 1 + ztest_random(-2ULL);
3692 * We've verified all the old bufwads, and made new ones.
3693 * Now write them out.
3695 dmu_write(os, packobj, packoff, packsize, packbuf, tx);
3698 if (ztest_opts.zo_verbose >= 7) {
3699 (void) printf("freeing offset %llx size %llx"
3701 (u_longlong_t)bigoff,
3702 (u_longlong_t)bigsize,
3705 VERIFY(0 == dmu_free_range(os, bigobj, bigoff, bigsize, tx));
3707 if (ztest_opts.zo_verbose >= 7) {
3708 (void) printf("writing offset %llx size %llx"
3710 (u_longlong_t)bigoff,
3711 (u_longlong_t)bigsize,
3714 dmu_write(os, bigobj, bigoff, bigsize, bigbuf, tx);
3720 * Sanity check the stuff we just wrote.
3723 void *packcheck = umem_alloc(packsize, UMEM_NOFAIL);
3724 void *bigcheck = umem_alloc(bigsize, UMEM_NOFAIL);
3726 VERIFY(0 == dmu_read(os, packobj, packoff,
3727 packsize, packcheck, DMU_READ_PREFETCH));
3728 VERIFY(0 == dmu_read(os, bigobj, bigoff,
3729 bigsize, bigcheck, DMU_READ_PREFETCH));
3731 ASSERT(bcmp(packbuf, packcheck, packsize) == 0);
3732 ASSERT(bcmp(bigbuf, bigcheck, bigsize) == 0);
3734 umem_free(packcheck, packsize);
3735 umem_free(bigcheck, bigsize);
3738 umem_free(packbuf, packsize);
3739 umem_free(bigbuf, bigsize);
3743 compare_and_update_pbbufs(uint64_t s, bufwad_t *packbuf, bufwad_t *bigbuf,
3744 uint64_t bigsize, uint64_t n, uint64_t chunksize, uint64_t txg)
3752 * For each index from n to n + s, verify that the existing bufwad
3753 * in packobj matches the bufwads at the head and tail of the
3754 * corresponding chunk in bigobj. Then update all three bufwads
3755 * with the new values we want to write out.
3757 for (i = 0; i < s; i++) {
3759 pack = (bufwad_t *)((char *)packbuf + i * sizeof (bufwad_t));
3761 bigH = (bufwad_t *)((char *)bigbuf + i * chunksize);
3763 bigT = (bufwad_t *)((char *)bigH + chunksize) - 1;
3765 ASSERT((uintptr_t)bigH - (uintptr_t)bigbuf < bigsize);
3766 ASSERT((uintptr_t)bigT - (uintptr_t)bigbuf < bigsize);
3768 if (pack->bw_txg > txg)
3769 fatal(0, "future leak: got %llx, open txg is %llx",
3772 if (pack->bw_data != 0 && pack->bw_index != n + i)
3773 fatal(0, "wrong index: got %llx, wanted %llx+%llx",
3774 pack->bw_index, n, i);
3776 if (bcmp(pack, bigH, sizeof (bufwad_t)) != 0)
3777 fatal(0, "pack/bigH mismatch in %p/%p", pack, bigH);
3779 if (bcmp(pack, bigT, sizeof (bufwad_t)) != 0)
3780 fatal(0, "pack/bigT mismatch in %p/%p", pack, bigT);
3782 pack->bw_index = n + i;
3784 pack->bw_data = 1 + ztest_random(-2ULL);
3792 ztest_dmu_read_write_zcopy(ztest_ds_t *zd, uint64_t id)
3794 objset_t *os = zd->zd_os;
3800 bufwad_t *packbuf, *bigbuf;
3801 uint64_t packobj, packoff, packsize, bigobj, bigoff, bigsize;
3802 uint64_t blocksize = ztest_random_blocksize();
3803 uint64_t chunksize = blocksize;
3804 uint64_t regions = 997;
3805 uint64_t stride = 123456789ULL;
3807 dmu_buf_t *bonus_db;
3808 arc_buf_t **bigbuf_arcbufs;
3809 dmu_object_info_t doi;
3812 * This test uses two objects, packobj and bigobj, that are always
3813 * updated together (i.e. in the same tx) so that their contents are
3814 * in sync and can be compared. Their contents relate to each other
3815 * in a simple way: packobj is a dense array of 'bufwad' structures,
3816 * while bigobj is a sparse array of the same bufwads. Specifically,
3817 * for any index n, there are three bufwads that should be identical:
3819 * packobj, at offset n * sizeof (bufwad_t)
3820 * bigobj, at the head of the nth chunk
3821 * bigobj, at the tail of the nth chunk
3823 * The chunk size is set equal to bigobj block size so that
3824 * dmu_assign_arcbuf() can be tested for object updates.
3828 * Read the directory info. If it's the first time, set things up.
3830 ztest_od_init(&od[0], id, FTAG, 0, DMU_OT_UINT64_OTHER, blocksize, 0);
3831 ztest_od_init(&od[1], id, FTAG, 1, DMU_OT_UINT64_OTHER, 0, chunksize);
3833 if (ztest_object_init(zd, od, sizeof (od), B_FALSE) != 0)
3836 bigobj = od[0].od_object;
3837 packobj = od[1].od_object;
3838 blocksize = od[0].od_blocksize;
3839 chunksize = blocksize;
3840 ASSERT(chunksize == od[1].od_gen);
3842 VERIFY(dmu_object_info(os, bigobj, &doi) == 0);
3843 VERIFY(ISP2(doi.doi_data_block_size));
3844 VERIFY(chunksize == doi.doi_data_block_size);
3845 VERIFY(chunksize >= 2 * sizeof (bufwad_t));
3848 * Pick a random index and compute the offsets into packobj and bigobj.
3850 n = ztest_random(regions) * stride + ztest_random(width);
3851 s = 1 + ztest_random(width - 1);
3853 packoff = n * sizeof (bufwad_t);
3854 packsize = s * sizeof (bufwad_t);
3856 bigoff = n * chunksize;
3857 bigsize = s * chunksize;
3859 packbuf = umem_zalloc(packsize, UMEM_NOFAIL);
3860 bigbuf = umem_zalloc(bigsize, UMEM_NOFAIL);
3862 VERIFY3U(0, ==, dmu_bonus_hold(os, bigobj, FTAG, &bonus_db));
3864 bigbuf_arcbufs = umem_zalloc(2 * s * sizeof (arc_buf_t *), UMEM_NOFAIL);
3867 * Iteration 0 test zcopy for DB_UNCACHED dbufs.
3868 * Iteration 1 test zcopy to already referenced dbufs.
3869 * Iteration 2 test zcopy to dirty dbuf in the same txg.
3870 * Iteration 3 test zcopy to dbuf dirty in previous txg.
3871 * Iteration 4 test zcopy when dbuf is no longer dirty.
3872 * Iteration 5 test zcopy when it can't be done.
3873 * Iteration 6 one more zcopy write.
3875 for (i = 0; i < 7; i++) {
3880 * In iteration 5 (i == 5) use arcbufs
3881 * that don't match bigobj blksz to test
3882 * dmu_assign_arcbuf() when it can't directly
3883 * assign an arcbuf to a dbuf.
3885 for (j = 0; j < s; j++) {
3888 dmu_request_arcbuf(bonus_db, chunksize);
3890 bigbuf_arcbufs[2 * j] =
3891 dmu_request_arcbuf(bonus_db, chunksize / 2);
3892 bigbuf_arcbufs[2 * j + 1] =
3893 dmu_request_arcbuf(bonus_db, chunksize / 2);
3898 * Get a tx for the mods to both packobj and bigobj.
3900 tx = dmu_tx_create(os);
3902 dmu_tx_hold_write(tx, packobj, packoff, packsize);
3903 dmu_tx_hold_write(tx, bigobj, bigoff, bigsize);
3905 txg = ztest_tx_assign(tx, TXG_MIGHTWAIT, FTAG);
3907 umem_free(packbuf, packsize);
3908 umem_free(bigbuf, bigsize);
3909 for (j = 0; j < s; j++) {
3911 dmu_return_arcbuf(bigbuf_arcbufs[j]);
3914 bigbuf_arcbufs[2 * j]);
3916 bigbuf_arcbufs[2 * j + 1]);
3919 umem_free(bigbuf_arcbufs, 2 * s * sizeof (arc_buf_t *));
3920 dmu_buf_rele(bonus_db, FTAG);
3925 * 50% of the time don't read objects in the 1st iteration to
3926 * test dmu_assign_arcbuf() for the case when there're no
3927 * existing dbufs for the specified offsets.
3929 if (i != 0 || ztest_random(2) != 0) {
3930 error = dmu_read(os, packobj, packoff,
3931 packsize, packbuf, DMU_READ_PREFETCH);
3933 error = dmu_read(os, bigobj, bigoff, bigsize,
3934 bigbuf, DMU_READ_PREFETCH);
3937 compare_and_update_pbbufs(s, packbuf, bigbuf, bigsize,
3941 * We've verified all the old bufwads, and made new ones.
3942 * Now write them out.
3944 dmu_write(os, packobj, packoff, packsize, packbuf, tx);
3945 if (ztest_opts.zo_verbose >= 7) {
3946 (void) printf("writing offset %llx size %llx"
3948 (u_longlong_t)bigoff,
3949 (u_longlong_t)bigsize,
3952 for (off = bigoff, j = 0; j < s; j++, off += chunksize) {
3955 bcopy((caddr_t)bigbuf + (off - bigoff),
3956 bigbuf_arcbufs[j]->b_data, chunksize);
3958 bcopy((caddr_t)bigbuf + (off - bigoff),
3959 bigbuf_arcbufs[2 * j]->b_data,
3961 bcopy((caddr_t)bigbuf + (off - bigoff) +
3963 bigbuf_arcbufs[2 * j + 1]->b_data,
3968 VERIFY(dmu_buf_hold(os, bigobj, off,
3969 FTAG, &dbt, DMU_READ_NO_PREFETCH) == 0);
3972 dmu_assign_arcbuf(bonus_db, off,
3973 bigbuf_arcbufs[j], tx);
3975 dmu_assign_arcbuf(bonus_db, off,
3976 bigbuf_arcbufs[2 * j], tx);
3977 dmu_assign_arcbuf(bonus_db,
3978 off + chunksize / 2,
3979 bigbuf_arcbufs[2 * j + 1], tx);
3982 dmu_buf_rele(dbt, FTAG);
3988 * Sanity check the stuff we just wrote.
3991 void *packcheck = umem_alloc(packsize, UMEM_NOFAIL);
3992 void *bigcheck = umem_alloc(bigsize, UMEM_NOFAIL);
3994 VERIFY(0 == dmu_read(os, packobj, packoff,
3995 packsize, packcheck, DMU_READ_PREFETCH));
3996 VERIFY(0 == dmu_read(os, bigobj, bigoff,
3997 bigsize, bigcheck, DMU_READ_PREFETCH));
3999 ASSERT(bcmp(packbuf, packcheck, packsize) == 0);
4000 ASSERT(bcmp(bigbuf, bigcheck, bigsize) == 0);
4002 umem_free(packcheck, packsize);
4003 umem_free(bigcheck, bigsize);
4006 txg_wait_open(dmu_objset_pool(os), 0);
4007 } else if (i == 3) {
4008 txg_wait_synced(dmu_objset_pool(os), 0);
4012 dmu_buf_rele(bonus_db, FTAG);
4013 umem_free(packbuf, packsize);
4014 umem_free(bigbuf, bigsize);
4015 umem_free(bigbuf_arcbufs, 2 * s * sizeof (arc_buf_t *));
4020 ztest_dmu_write_parallel(ztest_ds_t *zd, uint64_t id)
4023 uint64_t offset = (1ULL << (ztest_random(20) + 43)) +
4024 (ztest_random(ZTEST_RANGE_LOCKS) << SPA_MAXBLOCKSHIFT);
4027 * Have multiple threads write to large offsets in an object
4028 * to verify that parallel writes to an object -- even to the
4029 * same blocks within the object -- doesn't cause any trouble.
4031 ztest_od_init(&od[0], ID_PARALLEL, FTAG, 0, DMU_OT_UINT64_OTHER, 0, 0);
4033 if (ztest_object_init(zd, od, sizeof (od), B_FALSE) != 0)
4036 while (ztest_random(10) != 0)
4037 ztest_io(zd, od[0].od_object, offset);
4041 ztest_dmu_prealloc(ztest_ds_t *zd, uint64_t id)
4044 uint64_t offset = (1ULL << (ztest_random(4) + SPA_MAXBLOCKSHIFT)) +
4045 (ztest_random(ZTEST_RANGE_LOCKS) << SPA_MAXBLOCKSHIFT);
4046 uint64_t count = ztest_random(20) + 1;
4047 uint64_t blocksize = ztest_random_blocksize();
4050 ztest_od_init(&od[0], id, FTAG, 0, DMU_OT_UINT64_OTHER, blocksize, 0);
4052 if (ztest_object_init(zd, od, sizeof (od), !ztest_random(2)) != 0)
4055 if (ztest_truncate(zd, od[0].od_object, offset, count * blocksize) != 0)
4058 ztest_prealloc(zd, od[0].od_object, offset, count * blocksize);
4060 data = umem_zalloc(blocksize, UMEM_NOFAIL);
4062 while (ztest_random(count) != 0) {
4063 uint64_t randoff = offset + (ztest_random(count) * blocksize);
4064 if (ztest_write(zd, od[0].od_object, randoff, blocksize,
4067 while (ztest_random(4) != 0)
4068 ztest_io(zd, od[0].od_object, randoff);
4071 umem_free(data, blocksize);
4075 * Verify that zap_{create,destroy,add,remove,update} work as expected.
4077 #define ZTEST_ZAP_MIN_INTS 1
4078 #define ZTEST_ZAP_MAX_INTS 4
4079 #define ZTEST_ZAP_MAX_PROPS 1000
4082 ztest_zap(ztest_ds_t *zd, uint64_t id)
4084 objset_t *os = zd->zd_os;
4087 uint64_t txg, last_txg;
4088 uint64_t value[ZTEST_ZAP_MAX_INTS];
4089 uint64_t zl_ints, zl_intsize, prop;
4092 char propname[100], txgname[100];
4094 char *hc[2] = { "s.acl.h", ".s.open.h.hyLZlg" };
4096 ztest_od_init(&od[0], id, FTAG, 0, DMU_OT_ZAP_OTHER, 0, 0);
4098 if (ztest_object_init(zd, od, sizeof (od), !ztest_random(2)) != 0)
4101 object = od[0].od_object;
4104 * Generate a known hash collision, and verify that
4105 * we can lookup and remove both entries.
4107 tx = dmu_tx_create(os);
4108 dmu_tx_hold_zap(tx, object, B_TRUE, NULL);
4109 txg = ztest_tx_assign(tx, TXG_MIGHTWAIT, FTAG);
4112 for (i = 0; i < 2; i++) {
4114 VERIFY3U(0, ==, zap_add(os, object, hc[i], sizeof (uint64_t),
4117 for (i = 0; i < 2; i++) {
4118 VERIFY3U(EEXIST, ==, zap_add(os, object, hc[i],
4119 sizeof (uint64_t), 1, &value[i], tx));
4121 zap_length(os, object, hc[i], &zl_intsize, &zl_ints));
4122 ASSERT3U(zl_intsize, ==, sizeof (uint64_t));
4123 ASSERT3U(zl_ints, ==, 1);
4125 for (i = 0; i < 2; i++) {
4126 VERIFY3U(0, ==, zap_remove(os, object, hc[i], tx));
4131 * Generate a buch of random entries.
4133 ints = MAX(ZTEST_ZAP_MIN_INTS, object % ZTEST_ZAP_MAX_INTS);
4135 prop = ztest_random(ZTEST_ZAP_MAX_PROPS);
4136 (void) sprintf(propname, "prop_%llu", (u_longlong_t)prop);
4137 (void) sprintf(txgname, "txg_%llu", (u_longlong_t)prop);
4138 bzero(value, sizeof (value));
4142 * If these zap entries already exist, validate their contents.
4144 error = zap_length(os, object, txgname, &zl_intsize, &zl_ints);
4146 ASSERT3U(zl_intsize, ==, sizeof (uint64_t));
4147 ASSERT3U(zl_ints, ==, 1);
4149 VERIFY(zap_lookup(os, object, txgname, zl_intsize,
4150 zl_ints, &last_txg) == 0);
4152 VERIFY(zap_length(os, object, propname, &zl_intsize,
4155 ASSERT3U(zl_intsize, ==, sizeof (uint64_t));
4156 ASSERT3U(zl_ints, ==, ints);
4158 VERIFY(zap_lookup(os, object, propname, zl_intsize,
4159 zl_ints, value) == 0);
4161 for (i = 0; i < ints; i++) {
4162 ASSERT3U(value[i], ==, last_txg + object + i);
4165 ASSERT3U(error, ==, ENOENT);
4169 * Atomically update two entries in our zap object.
4170 * The first is named txg_%llu, and contains the txg
4171 * in which the property was last updated. The second
4172 * is named prop_%llu, and the nth element of its value
4173 * should be txg + object + n.
4175 tx = dmu_tx_create(os);
4176 dmu_tx_hold_zap(tx, object, B_TRUE, NULL);
4177 txg = ztest_tx_assign(tx, TXG_MIGHTWAIT, FTAG);
4182 fatal(0, "zap future leak: old %llu new %llu", last_txg, txg);
4184 for (i = 0; i < ints; i++)
4185 value[i] = txg + object + i;
4187 VERIFY3U(0, ==, zap_update(os, object, txgname, sizeof (uint64_t),
4189 VERIFY3U(0, ==, zap_update(os, object, propname, sizeof (uint64_t),
4195 * Remove a random pair of entries.
4197 prop = ztest_random(ZTEST_ZAP_MAX_PROPS);
4198 (void) sprintf(propname, "prop_%llu", (u_longlong_t)prop);
4199 (void) sprintf(txgname, "txg_%llu", (u_longlong_t)prop);
4201 error = zap_length(os, object, txgname, &zl_intsize, &zl_ints);
4203 if (error == ENOENT)
4208 tx = dmu_tx_create(os);
4209 dmu_tx_hold_zap(tx, object, B_TRUE, NULL);
4210 txg = ztest_tx_assign(tx, TXG_MIGHTWAIT, FTAG);
4213 VERIFY3U(0, ==, zap_remove(os, object, txgname, tx));
4214 VERIFY3U(0, ==, zap_remove(os, object, propname, tx));
4219 * Testcase to test the upgrading of a microzap to fatzap.
4222 ztest_fzap(ztest_ds_t *zd, uint64_t id)
4224 objset_t *os = zd->zd_os;
4226 uint64_t object, txg;
4228 ztest_od_init(&od[0], id, FTAG, 0, DMU_OT_ZAP_OTHER, 0, 0);
4230 if (ztest_object_init(zd, od, sizeof (od), !ztest_random(2)) != 0)
4233 object = od[0].od_object;
4236 * Add entries to this ZAP and make sure it spills over
4237 * and gets upgraded to a fatzap. Also, since we are adding
4238 * 2050 entries we should see ptrtbl growth and leaf-block split.
4240 for (int i = 0; i < 2050; i++) {
4241 char name[MAXNAMELEN];
4246 (void) snprintf(name, sizeof (name), "fzap-%llu-%llu",
4249 tx = dmu_tx_create(os);
4250 dmu_tx_hold_zap(tx, object, B_TRUE, name);
4251 txg = ztest_tx_assign(tx, TXG_MIGHTWAIT, FTAG);
4254 error = zap_add(os, object, name, sizeof (uint64_t), 1,
4256 ASSERT(error == 0 || error == EEXIST);
4263 ztest_zap_parallel(ztest_ds_t *zd, uint64_t id)
4265 objset_t *os = zd->zd_os;
4267 uint64_t txg, object, count, wsize, wc, zl_wsize, zl_wc;
4269 int i, namelen, error;
4270 int micro = ztest_random(2);
4271 char name[20], string_value[20];
4274 ztest_od_init(&od[0], ID_PARALLEL, FTAG, micro, DMU_OT_ZAP_OTHER, 0, 0);
4276 if (ztest_object_init(zd, od, sizeof (od), B_FALSE) != 0)
4279 object = od[0].od_object;
4282 * Generate a random name of the form 'xxx.....' where each
4283 * x is a random printable character and the dots are dots.
4284 * There are 94 such characters, and the name length goes from
4285 * 6 to 20, so there are 94^3 * 15 = 12,458,760 possible names.
4287 namelen = ztest_random(sizeof (name) - 5) + 5 + 1;
4289 for (i = 0; i < 3; i++)
4290 name[i] = '!' + ztest_random('~' - '!' + 1);
4291 for (; i < namelen - 1; i++)
4295 if ((namelen & 1) || micro) {
4296 wsize = sizeof (txg);
4302 data = string_value;
4306 VERIFY0(zap_count(os, object, &count));
4307 ASSERT(count != -1ULL);
4310 * Select an operation: length, lookup, add, update, remove.
4312 i = ztest_random(5);
4315 tx = dmu_tx_create(os);
4316 dmu_tx_hold_zap(tx, object, B_TRUE, NULL);
4317 txg = ztest_tx_assign(tx, TXG_MIGHTWAIT, FTAG);
4320 bcopy(name, string_value, namelen);
4324 bzero(string_value, namelen);
4330 error = zap_length(os, object, name, &zl_wsize, &zl_wc);
4332 ASSERT3U(wsize, ==, zl_wsize);
4333 ASSERT3U(wc, ==, zl_wc);
4335 ASSERT3U(error, ==, ENOENT);
4340 error = zap_lookup(os, object, name, wsize, wc, data);
4342 if (data == string_value &&
4343 bcmp(name, data, namelen) != 0)
4344 fatal(0, "name '%s' != val '%s' len %d",
4345 name, data, namelen);
4347 ASSERT3U(error, ==, ENOENT);
4352 error = zap_add(os, object, name, wsize, wc, data, tx);
4353 ASSERT(error == 0 || error == EEXIST);
4357 VERIFY(zap_update(os, object, name, wsize, wc, data, tx) == 0);
4361 error = zap_remove(os, object, name, tx);
4362 ASSERT(error == 0 || error == ENOENT);
4371 * Commit callback data.
4373 typedef struct ztest_cb_data {
4374 list_node_t zcd_node;
4376 int zcd_expected_err;
4377 boolean_t zcd_added;
4378 boolean_t zcd_called;
4382 /* This is the actual commit callback function */
4384 ztest_commit_callback(void *arg, int error)
4386 ztest_cb_data_t *data = arg;
4387 uint64_t synced_txg;
4389 VERIFY(data != NULL);
4390 VERIFY3S(data->zcd_expected_err, ==, error);
4391 VERIFY(!data->zcd_called);
4393 synced_txg = spa_last_synced_txg(data->zcd_spa);
4394 if (data->zcd_txg > synced_txg)
4395 fatal(0, "commit callback of txg %" PRIu64 " called prematurely"
4396 ", last synced txg = %" PRIu64 "\n", data->zcd_txg,
4399 data->zcd_called = B_TRUE;
4401 if (error == ECANCELED) {
4402 ASSERT0(data->zcd_txg);
4403 ASSERT(!data->zcd_added);
4406 * The private callback data should be destroyed here, but
4407 * since we are going to check the zcd_called field after
4408 * dmu_tx_abort(), we will destroy it there.
4413 /* Was this callback added to the global callback list? */
4414 if (!data->zcd_added)
4417 ASSERT3U(data->zcd_txg, !=, 0);
4419 /* Remove our callback from the list */
4420 (void) mutex_lock(&zcl.zcl_callbacks_lock);
4421 list_remove(&zcl.zcl_callbacks, data);
4422 (void) mutex_unlock(&zcl.zcl_callbacks_lock);
4425 umem_free(data, sizeof (ztest_cb_data_t));
4428 /* Allocate and initialize callback data structure */
4429 static ztest_cb_data_t *
4430 ztest_create_cb_data(objset_t *os, uint64_t txg)
4432 ztest_cb_data_t *cb_data;
4434 cb_data = umem_zalloc(sizeof (ztest_cb_data_t), UMEM_NOFAIL);
4436 cb_data->zcd_txg = txg;
4437 cb_data->zcd_spa = dmu_objset_spa(os);
4443 * If a number of txgs equal to this threshold have been created after a commit
4444 * callback has been registered but not called, then we assume there is an
4445 * implementation bug.
4447 #define ZTEST_COMMIT_CALLBACK_THRESH (TXG_CONCURRENT_STATES + 2)
4450 * Commit callback test.
4453 ztest_dmu_commit_callbacks(ztest_ds_t *zd, uint64_t id)
4455 objset_t *os = zd->zd_os;
4458 ztest_cb_data_t *cb_data[3], *tmp_cb;
4459 uint64_t old_txg, txg;
4462 ztest_od_init(&od[0], id, FTAG, 0, DMU_OT_UINT64_OTHER, 0, 0);
4464 if (ztest_object_init(zd, od, sizeof (od), B_FALSE) != 0)
4467 tx = dmu_tx_create(os);
4469 cb_data[0] = ztest_create_cb_data(os, 0);
4470 dmu_tx_callback_register(tx, ztest_commit_callback, cb_data[0]);
4472 dmu_tx_hold_write(tx, od[0].od_object, 0, sizeof (uint64_t));
4474 /* Every once in a while, abort the transaction on purpose */
4475 if (ztest_random(100) == 0)
4479 error = dmu_tx_assign(tx, TXG_NOWAIT);
4481 txg = error ? 0 : dmu_tx_get_txg(tx);
4483 cb_data[0]->zcd_txg = txg;
4484 cb_data[1] = ztest_create_cb_data(os, txg);
4485 dmu_tx_callback_register(tx, ztest_commit_callback, cb_data[1]);
4489 * It's not a strict requirement to call the registered
4490 * callbacks from inside dmu_tx_abort(), but that's what
4491 * it's supposed to happen in the current implementation
4492 * so we will check for that.
4494 for (i = 0; i < 2; i++) {
4495 cb_data[i]->zcd_expected_err = ECANCELED;
4496 VERIFY(!cb_data[i]->zcd_called);
4501 for (i = 0; i < 2; i++) {
4502 VERIFY(cb_data[i]->zcd_called);
4503 umem_free(cb_data[i], sizeof (ztest_cb_data_t));
4509 cb_data[2] = ztest_create_cb_data(os, txg);
4510 dmu_tx_callback_register(tx, ztest_commit_callback, cb_data[2]);
4513 * Read existing data to make sure there isn't a future leak.
4515 VERIFY(0 == dmu_read(os, od[0].od_object, 0, sizeof (uint64_t),
4516 &old_txg, DMU_READ_PREFETCH));
4519 fatal(0, "future leak: got %" PRIu64 ", open txg is %" PRIu64,
4522 dmu_write(os, od[0].od_object, 0, sizeof (uint64_t), &txg, tx);
4524 (void) mutex_lock(&zcl.zcl_callbacks_lock);
4527 * Since commit callbacks don't have any ordering requirement and since
4528 * it is theoretically possible for a commit callback to be called
4529 * after an arbitrary amount of time has elapsed since its txg has been
4530 * synced, it is difficult to reliably determine whether a commit
4531 * callback hasn't been called due to high load or due to a flawed
4534 * In practice, we will assume that if after a certain number of txgs a
4535 * commit callback hasn't been called, then most likely there's an
4536 * implementation bug..
4538 tmp_cb = list_head(&zcl.zcl_callbacks);
4539 if (tmp_cb != NULL &&
4540 (txg - ZTEST_COMMIT_CALLBACK_THRESH) > tmp_cb->zcd_txg) {
4541 fatal(0, "Commit callback threshold exceeded, oldest txg: %"
4542 PRIu64 ", open txg: %" PRIu64 "\n", tmp_cb->zcd_txg, txg);
4546 * Let's find the place to insert our callbacks.
4548 * Even though the list is ordered by txg, it is possible for the
4549 * insertion point to not be the end because our txg may already be
4550 * quiescing at this point and other callbacks in the open txg
4551 * (from other objsets) may have sneaked in.
4553 tmp_cb = list_tail(&zcl.zcl_callbacks);
4554 while (tmp_cb != NULL && tmp_cb->zcd_txg > txg)
4555 tmp_cb = list_prev(&zcl.zcl_callbacks, tmp_cb);
4557 /* Add the 3 callbacks to the list */
4558 for (i = 0; i < 3; i++) {
4560 list_insert_head(&zcl.zcl_callbacks, cb_data[i]);
4562 list_insert_after(&zcl.zcl_callbacks, tmp_cb,
4565 cb_data[i]->zcd_added = B_TRUE;
4566 VERIFY(!cb_data[i]->zcd_called);
4568 tmp_cb = cb_data[i];
4571 (void) mutex_unlock(&zcl.zcl_callbacks_lock);
4578 ztest_dsl_prop_get_set(ztest_ds_t *zd, uint64_t id)
4580 zfs_prop_t proplist[] = {
4582 ZFS_PROP_COMPRESSION,
4587 (void) rw_rdlock(&ztest_name_lock);
4589 for (int p = 0; p < sizeof (proplist) / sizeof (proplist[0]); p++)
4590 (void) ztest_dsl_prop_set_uint64(zd->zd_name, proplist[p],
4591 ztest_random_dsl_prop(proplist[p]), (int)ztest_random(2));
4593 (void) rw_unlock(&ztest_name_lock);
4598 ztest_spa_prop_get_set(ztest_ds_t *zd, uint64_t id)
4600 nvlist_t *props = NULL;
4602 (void) rw_rdlock(&ztest_name_lock);
4604 (void) ztest_spa_prop_set_uint64(ZPOOL_PROP_DEDUPDITTO,
4605 ZIO_DEDUPDITTO_MIN + ztest_random(ZIO_DEDUPDITTO_MIN));
4607 VERIFY0(spa_prop_get(ztest_spa, &props));
4609 if (ztest_opts.zo_verbose >= 6)
4610 dump_nvlist(props, 4);
4614 (void) rw_unlock(&ztest_name_lock);
4618 user_release_one(const char *snapname, const char *holdname)
4620 nvlist_t *snaps, *holds;
4623 snaps = fnvlist_alloc();
4624 holds = fnvlist_alloc();
4625 fnvlist_add_boolean(holds, holdname);
4626 fnvlist_add_nvlist(snaps, snapname, holds);
4627 fnvlist_free(holds);
4628 error = dsl_dataset_user_release(snaps, NULL);
4629 fnvlist_free(snaps);
4634 * Test snapshot hold/release and deferred destroy.
4637 ztest_dmu_snapshot_hold(ztest_ds_t *zd, uint64_t id)
4640 objset_t *os = zd->zd_os;
4644 char clonename[100];
4646 char osname[MAXNAMELEN];
4649 (void) rw_rdlock(&ztest_name_lock);
4651 dmu_objset_name(os, osname);
4653 (void) snprintf(snapname, sizeof (snapname), "sh1_%llu", id);
4654 (void) snprintf(fullname, sizeof (fullname), "%s@%s", osname, snapname);
4655 (void) snprintf(clonename, sizeof (clonename),
4656 "%s/ch1_%llu", osname, id);
4657 (void) snprintf(tag, sizeof (tag), "tag_%llu", id);
4660 * Clean up from any previous run.
4662 error = dsl_destroy_head(clonename);
4663 if (error != ENOENT)
4665 error = user_release_one(fullname, tag);
4666 if (error != ESRCH && error != ENOENT)
4668 error = dsl_destroy_snapshot(fullname, B_FALSE);
4669 if (error != ENOENT)
4673 * Create snapshot, clone it, mark snap for deferred destroy,
4674 * destroy clone, verify snap was also destroyed.
4676 error = dmu_objset_snapshot_one(osname, snapname);
4678 if (error == ENOSPC) {
4679 ztest_record_enospc("dmu_objset_snapshot");
4682 fatal(0, "dmu_objset_snapshot(%s) = %d", fullname, error);
4685 error = dmu_objset_clone(clonename, fullname);
4687 if (error == ENOSPC) {
4688 ztest_record_enospc("dmu_objset_clone");
4691 fatal(0, "dmu_objset_clone(%s) = %d", clonename, error);
4694 error = dsl_destroy_snapshot(fullname, B_TRUE);
4696 fatal(0, "dsl_destroy_snapshot(%s, B_TRUE) = %d",
4700 error = dsl_destroy_head(clonename);
4702 fatal(0, "dsl_destroy_head(%s) = %d", clonename, error);
4704 error = dmu_objset_hold(fullname, FTAG, &origin);
4705 if (error != ENOENT)
4706 fatal(0, "dmu_objset_hold(%s) = %d", fullname, error);
4709 * Create snapshot, add temporary hold, verify that we can't
4710 * destroy a held snapshot, mark for deferred destroy,
4711 * release hold, verify snapshot was destroyed.
4713 error = dmu_objset_snapshot_one(osname, snapname);
4715 if (error == ENOSPC) {
4716 ztest_record_enospc("dmu_objset_snapshot");
4719 fatal(0, "dmu_objset_snapshot(%s) = %d", fullname, error);
4722 holds = fnvlist_alloc();
4723 fnvlist_add_string(holds, fullname, tag);
4724 error = dsl_dataset_user_hold(holds, 0, NULL);
4725 fnvlist_free(holds);
4727 if (error == ENOSPC) {
4728 ztest_record_enospc("dsl_dataset_user_hold");
4731 fatal(0, "dsl_dataset_user_hold(%s, %s) = %u",
4732 fullname, tag, error);
4735 error = dsl_destroy_snapshot(fullname, B_FALSE);
4736 if (error != EBUSY) {
4737 fatal(0, "dsl_destroy_snapshot(%s, B_FALSE) = %d",
4741 error = dsl_destroy_snapshot(fullname, B_TRUE);
4743 fatal(0, "dsl_destroy_snapshot(%s, B_TRUE) = %d",
4747 error = user_release_one(fullname, tag);
4749 fatal(0, "user_release_one(%s, %s) = %d", fullname, tag, error);
4751 VERIFY3U(dmu_objset_hold(fullname, FTAG, &origin), ==, ENOENT);
4754 (void) rw_unlock(&ztest_name_lock);
4758 * Inject random faults into the on-disk data.
4762 ztest_fault_inject(ztest_ds_t *zd, uint64_t id)
4764 ztest_shared_t *zs = ztest_shared;
4765 spa_t *spa = ztest_spa;
4769 uint64_t bad = 0x1990c0ffeedecadeULL;
4771 char path0[MAXPATHLEN];
4772 char pathrand[MAXPATHLEN];
4774 int bshift = SPA_MAXBLOCKSHIFT + 2; /* don't scrog all labels */
4780 boolean_t islog = B_FALSE;
4782 VERIFY(mutex_lock(&ztest_vdev_lock) == 0);
4783 maxfaults = MAXFAULTS();
4784 leaves = MAX(zs->zs_mirrors, 1) * ztest_opts.zo_raidz;
4785 mirror_save = zs->zs_mirrors;
4786 VERIFY(mutex_unlock(&ztest_vdev_lock) == 0);
4788 ASSERT(leaves >= 1);
4791 * Grab the name lock as reader. There are some operations
4792 * which don't like to have their vdevs changed while
4793 * they are in progress (i.e. spa_change_guid). Those
4794 * operations will have grabbed the name lock as writer.
4796 (void) rw_rdlock(&ztest_name_lock);
4799 * We need SCL_STATE here because we're going to look at vd0->vdev_tsd.
4801 spa_config_enter(spa, SCL_STATE, FTAG, RW_READER);
4803 if (ztest_random(2) == 0) {
4805 * Inject errors on a normal data device or slog device.
4807 top = ztest_random_vdev_top(spa, B_TRUE);
4808 leaf = ztest_random(leaves) + zs->zs_splits;
4811 * Generate paths to the first leaf in this top-level vdev,
4812 * and to the random leaf we selected. We'll induce transient
4813 * write failures and random online/offline activity on leaf 0,
4814 * and we'll write random garbage to the randomly chosen leaf.
4816 (void) snprintf(path0, sizeof (path0), ztest_dev_template,
4817 ztest_opts.zo_dir, ztest_opts.zo_pool,
4818 top * leaves + zs->zs_splits);
4819 (void) snprintf(pathrand, sizeof (pathrand), ztest_dev_template,
4820 ztest_opts.zo_dir, ztest_opts.zo_pool,
4821 top * leaves + leaf);
4823 vd0 = vdev_lookup_by_path(spa->spa_root_vdev, path0);
4824 if (vd0 != NULL && vd0->vdev_top->vdev_islog)
4828 * If the top-level vdev needs to be resilvered
4829 * then we only allow faults on the device that is
4832 if (vd0 != NULL && maxfaults != 1 &&
4833 (!vdev_resilver_needed(vd0->vdev_top, NULL, NULL) ||
4834 vd0->vdev_resilver_txg != 0)) {
4836 * Make vd0 explicitly claim to be unreadable,
4837 * or unwriteable, or reach behind its back
4838 * and close the underlying fd. We can do this if
4839 * maxfaults == 0 because we'll fail and reexecute,
4840 * and we can do it if maxfaults >= 2 because we'll
4841 * have enough redundancy. If maxfaults == 1, the
4842 * combination of this with injection of random data
4843 * corruption below exceeds the pool's fault tolerance.
4845 vdev_file_t *vf = vd0->vdev_tsd;
4847 if (vf != NULL && ztest_random(3) == 0) {
4848 (void) close(vf->vf_vnode->v_fd);
4849 vf->vf_vnode->v_fd = -1;
4850 } else if (ztest_random(2) == 0) {
4851 vd0->vdev_cant_read = B_TRUE;
4853 vd0->vdev_cant_write = B_TRUE;
4855 guid0 = vd0->vdev_guid;
4859 * Inject errors on an l2cache device.
4861 spa_aux_vdev_t *sav = &spa->spa_l2cache;
4863 if (sav->sav_count == 0) {
4864 spa_config_exit(spa, SCL_STATE, FTAG);
4865 (void) rw_unlock(&ztest_name_lock);
4868 vd0 = sav->sav_vdevs[ztest_random(sav->sav_count)];
4869 guid0 = vd0->vdev_guid;
4870 (void) strcpy(path0, vd0->vdev_path);
4871 (void) strcpy(pathrand, vd0->vdev_path);
4875 maxfaults = INT_MAX; /* no limit on cache devices */
4878 spa_config_exit(spa, SCL_STATE, FTAG);
4879 (void) rw_unlock(&ztest_name_lock);
4882 * If we can tolerate two or more faults, or we're dealing
4883 * with a slog, randomly online/offline vd0.
4885 if ((maxfaults >= 2 || islog) && guid0 != 0) {
4886 if (ztest_random(10) < 6) {
4887 int flags = (ztest_random(2) == 0 ?
4888 ZFS_OFFLINE_TEMPORARY : 0);
4891 * We have to grab the zs_name_lock as writer to
4892 * prevent a race between offlining a slog and
4893 * destroying a dataset. Offlining the slog will
4894 * grab a reference on the dataset which may cause
4895 * dmu_objset_destroy() to fail with EBUSY thus
4896 * leaving the dataset in an inconsistent state.
4899 (void) rw_wrlock(&ztest_name_lock);
4901 VERIFY(vdev_offline(spa, guid0, flags) != EBUSY);
4904 (void) rw_unlock(&ztest_name_lock);
4907 * Ideally we would like to be able to randomly
4908 * call vdev_[on|off]line without holding locks
4909 * to force unpredictable failures but the side
4910 * effects of vdev_[on|off]line prevent us from
4911 * doing so. We grab the ztest_vdev_lock here to
4912 * prevent a race between injection testing and
4915 VERIFY(mutex_lock(&ztest_vdev_lock) == 0);
4916 (void) vdev_online(spa, guid0, 0, NULL);
4917 VERIFY(mutex_unlock(&ztest_vdev_lock) == 0);
4925 * We have at least single-fault tolerance, so inject data corruption.
4927 fd = open(pathrand, O_RDWR);
4929 if (fd == -1) /* we hit a gap in the device namespace */
4932 fsize = lseek(fd, 0, SEEK_END);
4934 while (--iters != 0) {
4935 offset = ztest_random(fsize / (leaves << bshift)) *
4936 (leaves << bshift) + (leaf << bshift) +
4937 (ztest_random(1ULL << (bshift - 1)) & -8ULL);
4939 if (offset >= fsize)
4942 VERIFY(mutex_lock(&ztest_vdev_lock) == 0);
4943 if (mirror_save != zs->zs_mirrors) {
4944 VERIFY(mutex_unlock(&ztest_vdev_lock) == 0);
4949 if (pwrite(fd, &bad, sizeof (bad), offset) != sizeof (bad))
4950 fatal(1, "can't inject bad word at 0x%llx in %s",
4953 VERIFY(mutex_unlock(&ztest_vdev_lock) == 0);
4955 if (ztest_opts.zo_verbose >= 7)
4956 (void) printf("injected bad word into %s,"
4957 " offset 0x%llx\n", pathrand, (u_longlong_t)offset);
4964 * Verify that DDT repair works as expected.
4967 ztest_ddt_repair(ztest_ds_t *zd, uint64_t id)
4969 ztest_shared_t *zs = ztest_shared;
4970 spa_t *spa = ztest_spa;
4971 objset_t *os = zd->zd_os;
4973 uint64_t object, blocksize, txg, pattern, psize;
4974 enum zio_checksum checksum = spa_dedup_checksum(spa);
4979 int copies = 2 * ZIO_DEDUPDITTO_MIN;
4981 blocksize = ztest_random_blocksize();
4982 blocksize = MIN(blocksize, 2048); /* because we write so many */
4984 ztest_od_init(&od[0], id, FTAG, 0, DMU_OT_UINT64_OTHER, blocksize, 0);
4986 if (ztest_object_init(zd, od, sizeof (od), B_FALSE) != 0)
4990 * Take the name lock as writer to prevent anyone else from changing
4991 * the pool and dataset properies we need to maintain during this test.
4993 (void) rw_wrlock(&ztest_name_lock);
4995 if (ztest_dsl_prop_set_uint64(zd->zd_name, ZFS_PROP_DEDUP, checksum,
4997 ztest_dsl_prop_set_uint64(zd->zd_name, ZFS_PROP_COPIES, 1,
4999 (void) rw_unlock(&ztest_name_lock);
5003 object = od[0].od_object;
5004 blocksize = od[0].od_blocksize;
5005 pattern = zs->zs_guid ^ dmu_objset_fsid_guid(os);
5007 ASSERT(object != 0);
5009 tx = dmu_tx_create(os);
5010 dmu_tx_hold_write(tx, object, 0, copies * blocksize);
5011 txg = ztest_tx_assign(tx, TXG_WAIT, FTAG);
5013 (void) rw_unlock(&ztest_name_lock);
5018 * Write all the copies of our block.
5020 for (int i = 0; i < copies; i++) {
5021 uint64_t offset = i * blocksize;
5022 int error = dmu_buf_hold(os, object, offset, FTAG, &db,
5023 DMU_READ_NO_PREFETCH);
5025 fatal(B_FALSE, "dmu_buf_hold(%p, %llu, %llu) = %u",
5026 os, (long long)object, (long long) offset, error);
5028 ASSERT(db->db_offset == offset);
5029 ASSERT(db->db_size == blocksize);
5030 ASSERT(ztest_pattern_match(db->db_data, db->db_size, pattern) ||
5031 ztest_pattern_match(db->db_data, db->db_size, 0ULL));
5032 dmu_buf_will_fill(db, tx);
5033 ztest_pattern_set(db->db_data, db->db_size, pattern);
5034 dmu_buf_rele(db, FTAG);
5038 txg_wait_synced(spa_get_dsl(spa), txg);
5041 * Find out what block we got.
5043 VERIFY0(dmu_buf_hold(os, object, 0, FTAG, &db,
5044 DMU_READ_NO_PREFETCH));
5045 blk = *((dmu_buf_impl_t *)db)->db_blkptr;
5046 dmu_buf_rele(db, FTAG);
5049 * Damage the block. Dedup-ditto will save us when we read it later.
5051 psize = BP_GET_PSIZE(&blk);
5052 buf = zio_buf_alloc(psize);
5053 ztest_pattern_set(buf, psize, ~pattern);
5055 (void) zio_wait(zio_rewrite(NULL, spa, 0, &blk,
5056 buf, psize, NULL, NULL, ZIO_PRIORITY_SYNC_WRITE,
5057 ZIO_FLAG_CANFAIL | ZIO_FLAG_INDUCE_DAMAGE, NULL));
5059 zio_buf_free(buf, psize);
5061 (void) rw_unlock(&ztest_name_lock);
5069 ztest_scrub(ztest_ds_t *zd, uint64_t id)
5071 spa_t *spa = ztest_spa;
5073 (void) spa_scan(spa, POOL_SCAN_SCRUB);
5074 (void) poll(NULL, 0, 100); /* wait a moment, then force a restart */
5075 (void) spa_scan(spa, POOL_SCAN_SCRUB);
5079 * Change the guid for the pool.
5083 ztest_reguid(ztest_ds_t *zd, uint64_t id)
5085 spa_t *spa = ztest_spa;
5086 uint64_t orig, load;
5089 orig = spa_guid(spa);
5090 load = spa_load_guid(spa);
5092 (void) rw_wrlock(&ztest_name_lock);
5093 error = spa_change_guid(spa);
5094 (void) rw_unlock(&ztest_name_lock);
5099 if (ztest_opts.zo_verbose >= 4) {
5100 (void) printf("Changed guid old %llu -> %llu\n",
5101 (u_longlong_t)orig, (u_longlong_t)spa_guid(spa));
5104 VERIFY3U(orig, !=, spa_guid(spa));
5105 VERIFY3U(load, ==, spa_load_guid(spa));
5109 * Rename the pool to a different name and then rename it back.
5113 ztest_spa_rename(ztest_ds_t *zd, uint64_t id)
5115 char *oldname, *newname;
5118 (void) rw_wrlock(&ztest_name_lock);
5120 oldname = ztest_opts.zo_pool;
5121 newname = umem_alloc(strlen(oldname) + 5, UMEM_NOFAIL);
5122 (void) strcpy(newname, oldname);
5123 (void) strcat(newname, "_tmp");
5128 VERIFY3U(0, ==, spa_rename(oldname, newname));
5131 * Try to open it under the old name, which shouldn't exist
5133 VERIFY3U(ENOENT, ==, spa_open(oldname, &spa, FTAG));
5136 * Open it under the new name and make sure it's still the same spa_t.
5138 VERIFY3U(0, ==, spa_open(newname, &spa, FTAG));
5140 ASSERT(spa == ztest_spa);
5141 spa_close(spa, FTAG);
5144 * Rename it back to the original
5146 VERIFY3U(0, ==, spa_rename(newname, oldname));
5149 * Make sure it can still be opened
5151 VERIFY3U(0, ==, spa_open(oldname, &spa, FTAG));
5153 ASSERT(spa == ztest_spa);
5154 spa_close(spa, FTAG);
5156 umem_free(newname, strlen(newname) + 1);
5158 (void) rw_unlock(&ztest_name_lock);
5162 * Verify pool integrity by running zdb.
5165 ztest_run_zdb(char *pool)
5168 char zdb[MAXPATHLEN + MAXNAMELEN + 20];
5176 strlcpy(zdb, "/usr/bin/ztest", sizeof(zdb));
5178 /* zdb lives in /usr/sbin, while ztest lives in /usr/bin */
5179 bin = strstr(zdb, "/usr/bin/");
5180 ztest = strstr(bin, "/ztest");
5182 isalen = ztest - isa;
5186 "/usr/sbin%.*s/zdb -bcc%s%s -d -U %s %s",
5189 ztest_opts.zo_verbose >= 3 ? "s" : "",
5190 ztest_opts.zo_verbose >= 4 ? "v" : "",
5195 if (ztest_opts.zo_verbose >= 5)
5196 (void) printf("Executing %s\n", strstr(zdb, "zdb "));
5198 fp = popen(zdb, "r");
5201 while (fgets(zbuf, sizeof (zbuf), fp) != NULL)
5202 if (ztest_opts.zo_verbose >= 3)
5203 (void) printf("%s", zbuf);
5205 status = pclose(fp);
5210 ztest_dump_core = 0;
5211 if (WIFEXITED(status))
5212 fatal(0, "'%s' exit code %d", zdb, WEXITSTATUS(status));
5214 fatal(0, "'%s' died with signal %d", zdb, WTERMSIG(status));
5218 ztest_walk_pool_directory(char *header)
5222 if (ztest_opts.zo_verbose >= 6)
5223 (void) printf("%s\n", header);
5225 mutex_enter(&spa_namespace_lock);
5226 while ((spa = spa_next(spa)) != NULL)
5227 if (ztest_opts.zo_verbose >= 6)
5228 (void) printf("\t%s\n", spa_name(spa));
5229 mutex_exit(&spa_namespace_lock);
5233 ztest_spa_import_export(char *oldname, char *newname)
5235 nvlist_t *config, *newconfig;
5240 if (ztest_opts.zo_verbose >= 4) {
5241 (void) printf("import/export: old = %s, new = %s\n",
5246 * Clean up from previous runs.
5248 (void) spa_destroy(newname);
5251 * Get the pool's configuration and guid.
5253 VERIFY3U(0, ==, spa_open(oldname, &spa, FTAG));
5256 * Kick off a scrub to tickle scrub/export races.
5258 if (ztest_random(2) == 0)
5259 (void) spa_scan(spa, POOL_SCAN_SCRUB);
5261 pool_guid = spa_guid(spa);
5262 spa_close(spa, FTAG);
5264 ztest_walk_pool_directory("pools before export");
5269 VERIFY3U(0, ==, spa_export(oldname, &config, B_FALSE, B_FALSE));
5271 ztest_walk_pool_directory("pools after export");
5276 newconfig = spa_tryimport(config);
5277 ASSERT(newconfig != NULL);
5278 nvlist_free(newconfig);
5281 * Import it under the new name.
5283 error = spa_import(newname, config, NULL, 0);
5285 dump_nvlist(config, 0);
5286 fatal(B_FALSE, "couldn't import pool %s as %s: error %u",
5287 oldname, newname, error);
5290 ztest_walk_pool_directory("pools after import");
5293 * Try to import it again -- should fail with EEXIST.
5295 VERIFY3U(EEXIST, ==, spa_import(newname, config, NULL, 0));
5298 * Try to import it under a different name -- should fail with EEXIST.
5300 VERIFY3U(EEXIST, ==, spa_import(oldname, config, NULL, 0));
5303 * Verify that the pool is no longer visible under the old name.
5305 VERIFY3U(ENOENT, ==, spa_open(oldname, &spa, FTAG));
5308 * Verify that we can open and close the pool using the new name.
5310 VERIFY3U(0, ==, spa_open(newname, &spa, FTAG));
5311 ASSERT(pool_guid == spa_guid(spa));
5312 spa_close(spa, FTAG);
5314 nvlist_free(config);
5318 ztest_resume(spa_t *spa)
5320 if (spa_suspended(spa) && ztest_opts.zo_verbose >= 6)
5321 (void) printf("resuming from suspended state\n");
5322 spa_vdev_state_enter(spa, SCL_NONE);
5323 vdev_clear(spa, NULL);
5324 (void) spa_vdev_state_exit(spa, NULL, 0);
5325 (void) zio_resume(spa);
5329 ztest_resume_thread(void *arg)
5333 while (!ztest_exiting) {
5334 if (spa_suspended(spa))
5336 (void) poll(NULL, 0, 100);
5342 ztest_deadman_thread(void *arg)
5344 ztest_shared_t *zs = arg;
5345 spa_t *spa = ztest_spa;
5346 hrtime_t delta, total = 0;
5349 delta = zs->zs_thread_stop - zs->zs_thread_start +
5350 MSEC2NSEC(zfs_deadman_synctime_ms);
5352 (void) poll(NULL, 0, (int)NSEC2MSEC(delta));
5355 * If the pool is suspended then fail immediately. Otherwise,
5356 * check to see if the pool is making any progress. If
5357 * vdev_deadman() discovers that there hasn't been any recent
5358 * I/Os then it will end up aborting the tests.
5360 if (spa_suspended(spa) || spa->spa_root_vdev == NULL) {
5361 fatal(0, "aborting test after %llu seconds because "
5362 "pool has transitioned to a suspended state.",
5363 zfs_deadman_synctime_ms / 1000);
5366 vdev_deadman(spa->spa_root_vdev);
5368 total += zfs_deadman_synctime_ms/1000;
5369 (void) printf("ztest has been running for %lld seconds\n",
5375 ztest_execute(int test, ztest_info_t *zi, uint64_t id)
5377 ztest_ds_t *zd = &ztest_ds[id % ztest_opts.zo_datasets];
5378 ztest_shared_callstate_t *zc = ZTEST_GET_SHARED_CALLSTATE(test);
5379 hrtime_t functime = gethrtime();
5381 for (int i = 0; i < zi->zi_iters; i++)
5382 zi->zi_func(zd, id);
5384 functime = gethrtime() - functime;
5386 atomic_add_64(&zc->zc_count, 1);
5387 atomic_add_64(&zc->zc_time, functime);
5389 if (ztest_opts.zo_verbose >= 4) {
5391 (void) dladdr((void *)zi->zi_func, &dli);
5392 (void) printf("%6.2f sec in %s\n",
5393 (double)functime / NANOSEC, dli.dli_sname);
5398 ztest_thread(void *arg)
5401 uint64_t id = (uintptr_t)arg;
5402 ztest_shared_t *zs = ztest_shared;
5406 ztest_shared_callstate_t *zc;
5408 while ((now = gethrtime()) < zs->zs_thread_stop) {
5410 * See if it's time to force a crash.
5412 if (now > zs->zs_thread_kill)
5416 * If we're getting ENOSPC with some regularity, stop.
5418 if (zs->zs_enospc_count > 10)
5422 * Pick a random function to execute.
5424 rand = ztest_random(ZTEST_FUNCS);
5425 zi = &ztest_info[rand];
5426 zc = ZTEST_GET_SHARED_CALLSTATE(rand);
5427 call_next = zc->zc_next;
5429 if (now >= call_next &&
5430 atomic_cas_64(&zc->zc_next, call_next, call_next +
5431 ztest_random(2 * zi->zi_interval[0] + 1)) == call_next) {
5432 ztest_execute(rand, zi, id);
5440 ztest_dataset_name(char *dsname, char *pool, int d)
5442 (void) snprintf(dsname, MAXNAMELEN, "%s/ds_%d", pool, d);
5446 ztest_dataset_destroy(int d)
5448 char name[MAXNAMELEN];
5450 ztest_dataset_name(name, ztest_opts.zo_pool, d);
5452 if (ztest_opts.zo_verbose >= 3)
5453 (void) printf("Destroying %s to free up space\n", name);
5456 * Cleanup any non-standard clones and snapshots. In general,
5457 * ztest thread t operates on dataset (t % zopt_datasets),
5458 * so there may be more than one thing to clean up.
5460 for (int t = d; t < ztest_opts.zo_threads;
5461 t += ztest_opts.zo_datasets) {
5462 ztest_dsl_dataset_cleanup(name, t);
5465 (void) dmu_objset_find(name, ztest_objset_destroy_cb, NULL,
5466 DS_FIND_SNAPSHOTS | DS_FIND_CHILDREN);
5470 ztest_dataset_dirobj_verify(ztest_ds_t *zd)
5472 uint64_t usedobjs, dirobjs, scratch;
5475 * ZTEST_DIROBJ is the object directory for the entire dataset.
5476 * Therefore, the number of objects in use should equal the
5477 * number of ZTEST_DIROBJ entries, +1 for ZTEST_DIROBJ itself.
5478 * If not, we have an object leak.
5480 * Note that we can only check this in ztest_dataset_open(),
5481 * when the open-context and syncing-context values agree.
5482 * That's because zap_count() returns the open-context value,
5483 * while dmu_objset_space() returns the rootbp fill count.
5485 VERIFY3U(0, ==, zap_count(zd->zd_os, ZTEST_DIROBJ, &dirobjs));
5486 dmu_objset_space(zd->zd_os, &scratch, &scratch, &usedobjs, &scratch);
5487 ASSERT3U(dirobjs + 1, ==, usedobjs);
5491 ztest_dataset_open(int d)
5493 ztest_ds_t *zd = &ztest_ds[d];
5494 uint64_t committed_seq = ZTEST_GET_SHARED_DS(d)->zd_seq;
5497 char name[MAXNAMELEN];
5500 ztest_dataset_name(name, ztest_opts.zo_pool, d);
5502 (void) rw_rdlock(&ztest_name_lock);
5504 error = ztest_dataset_create(name);
5505 if (error == ENOSPC) {
5506 (void) rw_unlock(&ztest_name_lock);
5507 ztest_record_enospc(FTAG);
5510 ASSERT(error == 0 || error == EEXIST);
5512 VERIFY0(dmu_objset_own(name, DMU_OST_OTHER, B_FALSE, zd, &os));
5513 (void) rw_unlock(&ztest_name_lock);
5515 ztest_zd_init(zd, ZTEST_GET_SHARED_DS(d), os);
5517 zilog = zd->zd_zilog;
5519 if (zilog->zl_header->zh_claim_lr_seq != 0 &&
5520 zilog->zl_header->zh_claim_lr_seq < committed_seq)
5521 fatal(0, "missing log records: claimed %llu < committed %llu",
5522 zilog->zl_header->zh_claim_lr_seq, committed_seq);
5524 ztest_dataset_dirobj_verify(zd);
5526 zil_replay(os, zd, ztest_replay_vector);
5528 ztest_dataset_dirobj_verify(zd);
5530 if (ztest_opts.zo_verbose >= 6)
5531 (void) printf("%s replay %llu blocks, %llu records, seq %llu\n",
5533 (u_longlong_t)zilog->zl_parse_blk_count,
5534 (u_longlong_t)zilog->zl_parse_lr_count,
5535 (u_longlong_t)zilog->zl_replaying_seq);
5537 zilog = zil_open(os, ztest_get_data);
5539 if (zilog->zl_replaying_seq != 0 &&
5540 zilog->zl_replaying_seq < committed_seq)
5541 fatal(0, "missing log records: replayed %llu < committed %llu",
5542 zilog->zl_replaying_seq, committed_seq);
5548 ztest_dataset_close(int d)
5550 ztest_ds_t *zd = &ztest_ds[d];
5552 zil_close(zd->zd_zilog);
5553 dmu_objset_disown(zd->zd_os, zd);
5559 * Kick off threads to run tests on all datasets in parallel.
5562 ztest_run(ztest_shared_t *zs)
5567 thread_t resume_tid;
5570 ztest_exiting = B_FALSE;
5573 * Initialize parent/child shared state.
5575 VERIFY(_mutex_init(&ztest_vdev_lock, USYNC_THREAD, NULL) == 0);
5576 VERIFY(rwlock_init(&ztest_name_lock, USYNC_THREAD, NULL) == 0);
5578 zs->zs_thread_start = gethrtime();
5579 zs->zs_thread_stop =
5580 zs->zs_thread_start + ztest_opts.zo_passtime * NANOSEC;
5581 zs->zs_thread_stop = MIN(zs->zs_thread_stop, zs->zs_proc_stop);
5582 zs->zs_thread_kill = zs->zs_thread_stop;
5583 if (ztest_random(100) < ztest_opts.zo_killrate) {
5584 zs->zs_thread_kill -=
5585 ztest_random(ztest_opts.zo_passtime * NANOSEC);
5588 (void) _mutex_init(&zcl.zcl_callbacks_lock, USYNC_THREAD, NULL);
5590 list_create(&zcl.zcl_callbacks, sizeof (ztest_cb_data_t),
5591 offsetof(ztest_cb_data_t, zcd_node));
5596 kernel_init(FREAD | FWRITE);
5597 VERIFY0(spa_open(ztest_opts.zo_pool, &spa, FTAG));
5598 spa->spa_debug = B_TRUE;
5601 VERIFY0(dmu_objset_own(ztest_opts.zo_pool,
5602 DMU_OST_ANY, B_TRUE, FTAG, &os));
5603 zs->zs_guid = dmu_objset_fsid_guid(os);
5604 dmu_objset_disown(os, FTAG);
5606 spa->spa_dedup_ditto = 2 * ZIO_DEDUPDITTO_MIN;
5609 * We don't expect the pool to suspend unless maxfaults == 0,
5610 * in which case ztest_fault_inject() temporarily takes away
5611 * the only valid replica.
5613 if (MAXFAULTS() == 0)
5614 spa->spa_failmode = ZIO_FAILURE_MODE_WAIT;
5616 spa->spa_failmode = ZIO_FAILURE_MODE_PANIC;
5619 * Create a thread to periodically resume suspended I/O.
5621 VERIFY(thr_create(0, 0, ztest_resume_thread, spa, THR_BOUND,
5625 * Create a deadman thread to abort() if we hang.
5627 VERIFY(thr_create(0, 0, ztest_deadman_thread, zs, THR_BOUND,
5631 * Verify that we can safely inquire about about any object,
5632 * whether it's allocated or not. To make it interesting,
5633 * we probe a 5-wide window around each power of two.
5634 * This hits all edge cases, including zero and the max.
5636 for (int t = 0; t < 64; t++) {
5637 for (int d = -5; d <= 5; d++) {
5638 error = dmu_object_info(spa->spa_meta_objset,
5639 (1ULL << t) + d, NULL);
5640 ASSERT(error == 0 || error == ENOENT ||
5646 * If we got any ENOSPC errors on the previous run, destroy something.
5648 if (zs->zs_enospc_count != 0) {
5649 int d = ztest_random(ztest_opts.zo_datasets);
5650 ztest_dataset_destroy(d);
5652 zs->zs_enospc_count = 0;
5654 tid = umem_zalloc(ztest_opts.zo_threads * sizeof (thread_t),
5657 if (ztest_opts.zo_verbose >= 4)
5658 (void) printf("starting main threads...\n");
5661 * Kick off all the tests that run in parallel.
5663 for (int t = 0; t < ztest_opts.zo_threads; t++) {
5664 if (t < ztest_opts.zo_datasets &&
5665 ztest_dataset_open(t) != 0)
5667 VERIFY(thr_create(0, 0, ztest_thread, (void *)(uintptr_t)t,
5668 THR_BOUND, &tid[t]) == 0);
5672 * Wait for all of the tests to complete. We go in reverse order
5673 * so we don't close datasets while threads are still using them.
5675 for (int t = ztest_opts.zo_threads - 1; t >= 0; t--) {
5676 VERIFY(thr_join(tid[t], NULL, NULL) == 0);
5677 if (t < ztest_opts.zo_datasets)
5678 ztest_dataset_close(t);
5681 txg_wait_synced(spa_get_dsl(spa), 0);
5683 zs->zs_alloc = metaslab_class_get_alloc(spa_normal_class(spa));
5684 zs->zs_space = metaslab_class_get_space(spa_normal_class(spa));
5685 zfs_dbgmsg_print(FTAG);
5687 umem_free(tid, ztest_opts.zo_threads * sizeof (thread_t));
5689 /* Kill the resume thread */
5690 ztest_exiting = B_TRUE;
5691 VERIFY(thr_join(resume_tid, NULL, NULL) == 0);
5695 * Right before closing the pool, kick off a bunch of async I/O;
5696 * spa_close() should wait for it to complete.
5698 for (uint64_t object = 1; object < 50; object++)
5699 dmu_prefetch(spa->spa_meta_objset, object, 0, 1ULL << 20);
5701 spa_close(spa, FTAG);
5704 * Verify that we can loop over all pools.
5706 mutex_enter(&spa_namespace_lock);
5707 for (spa = spa_next(NULL); spa != NULL; spa = spa_next(spa))
5708 if (ztest_opts.zo_verbose > 3)
5709 (void) printf("spa_next: found %s\n", spa_name(spa));
5710 mutex_exit(&spa_namespace_lock);
5713 * Verify that we can export the pool and reimport it under a
5716 if (ztest_random(2) == 0) {
5717 char name[MAXNAMELEN];
5718 (void) snprintf(name, MAXNAMELEN, "%s_import",
5719 ztest_opts.zo_pool);
5720 ztest_spa_import_export(ztest_opts.zo_pool, name);
5721 ztest_spa_import_export(name, ztest_opts.zo_pool);
5726 list_destroy(&zcl.zcl_callbacks);
5728 (void) _mutex_destroy(&zcl.zcl_callbacks_lock);
5730 (void) rwlock_destroy(&ztest_name_lock);
5731 (void) _mutex_destroy(&ztest_vdev_lock);
5737 ztest_ds_t *zd = &ztest_ds[0];
5741 if (ztest_opts.zo_verbose >= 3)
5742 (void) printf("testing spa_freeze()...\n");
5744 kernel_init(FREAD | FWRITE);
5745 VERIFY3U(0, ==, spa_open(ztest_opts.zo_pool, &spa, FTAG));
5746 VERIFY3U(0, ==, ztest_dataset_open(0));
5747 spa->spa_debug = B_TRUE;
5751 * Force the first log block to be transactionally allocated.
5752 * We have to do this before we freeze the pool -- otherwise
5753 * the log chain won't be anchored.
5755 while (BP_IS_HOLE(&zd->zd_zilog->zl_header->zh_log)) {
5756 ztest_dmu_object_alloc_free(zd, 0);
5757 zil_commit(zd->zd_zilog, 0);
5760 txg_wait_synced(spa_get_dsl(spa), 0);
5763 * Freeze the pool. This stops spa_sync() from doing anything,
5764 * so that the only way to record changes from now on is the ZIL.
5769 * Run tests that generate log records but don't alter the pool config
5770 * or depend on DSL sync tasks (snapshots, objset create/destroy, etc).
5771 * We do a txg_wait_synced() after each iteration to force the txg
5772 * to increase well beyond the last synced value in the uberblock.
5773 * The ZIL should be OK with that.
5775 while (ztest_random(10) != 0 &&
5776 numloops++ < ztest_opts.zo_maxloops) {
5777 ztest_dmu_write_parallel(zd, 0);
5778 ztest_dmu_object_alloc_free(zd, 0);
5779 txg_wait_synced(spa_get_dsl(spa), 0);
5783 * Commit all of the changes we just generated.
5785 zil_commit(zd->zd_zilog, 0);
5786 txg_wait_synced(spa_get_dsl(spa), 0);
5789 * Close our dataset and close the pool.
5791 ztest_dataset_close(0);
5792 spa_close(spa, FTAG);
5796 * Open and close the pool and dataset to induce log replay.
5798 kernel_init(FREAD | FWRITE);
5799 VERIFY3U(0, ==, spa_open(ztest_opts.zo_pool, &spa, FTAG));
5800 ASSERT(spa_freeze_txg(spa) == UINT64_MAX);
5801 VERIFY3U(0, ==, ztest_dataset_open(0));
5802 ztest_dataset_close(0);
5804 spa->spa_debug = B_TRUE;
5806 txg_wait_synced(spa_get_dsl(spa), 0);
5807 ztest_reguid(NULL, 0);
5809 spa_close(spa, FTAG);
5814 print_time(hrtime_t t, char *timebuf)
5816 hrtime_t s = t / NANOSEC;
5817 hrtime_t m = s / 60;
5818 hrtime_t h = m / 60;
5819 hrtime_t d = h / 24;
5828 (void) sprintf(timebuf,
5829 "%llud%02lluh%02llum%02llus", d, h, m, s);
5831 (void) sprintf(timebuf, "%lluh%02llum%02llus", h, m, s);
5833 (void) sprintf(timebuf, "%llum%02llus", m, s);
5835 (void) sprintf(timebuf, "%llus", s);
5843 VERIFY(nvlist_alloc(&props, NV_UNIQUE_NAME, 0) == 0);
5844 if (ztest_random(2) == 0)
5846 VERIFY(nvlist_add_uint64(props, "autoreplace", 1) == 0);
5852 * Create a storage pool with the given name and initial vdev size.
5853 * Then test spa_freeze() functionality.
5856 ztest_init(ztest_shared_t *zs)
5859 nvlist_t *nvroot, *props;
5861 VERIFY(_mutex_init(&ztest_vdev_lock, USYNC_THREAD, NULL) == 0);
5862 VERIFY(rwlock_init(&ztest_name_lock, USYNC_THREAD, NULL) == 0);
5864 kernel_init(FREAD | FWRITE);
5867 * Create the storage pool.
5869 (void) spa_destroy(ztest_opts.zo_pool);
5870 ztest_shared->zs_vdev_next_leaf = 0;
5872 zs->zs_mirrors = ztest_opts.zo_mirrors;
5873 nvroot = make_vdev_root(NULL, NULL, NULL, ztest_opts.zo_vdev_size, 0,
5874 0, ztest_opts.zo_raidz, zs->zs_mirrors, 1);
5875 props = make_random_props();
5876 for (int i = 0; i < SPA_FEATURES; i++) {
5878 (void) snprintf(buf, sizeof (buf), "feature@%s",
5879 spa_feature_table[i].fi_uname);
5880 VERIFY3U(0, ==, nvlist_add_uint64(props, buf, 0));
5882 VERIFY3U(0, ==, spa_create(ztest_opts.zo_pool, nvroot, props, NULL));
5883 nvlist_free(nvroot);
5885 VERIFY3U(0, ==, spa_open(ztest_opts.zo_pool, &spa, FTAG));
5886 zs->zs_metaslab_sz =
5887 1ULL << spa->spa_root_vdev->vdev_child[0]->vdev_ms_shift;
5889 spa_close(spa, FTAG);
5893 ztest_run_zdb(ztest_opts.zo_pool);
5897 ztest_run_zdb(ztest_opts.zo_pool);
5899 (void) rwlock_destroy(&ztest_name_lock);
5900 (void) _mutex_destroy(&ztest_vdev_lock);
5906 static char ztest_name_data[] = "/tmp/ztest.data.XXXXXX";
5908 ztest_fd_data = mkstemp(ztest_name_data);
5909 ASSERT3S(ztest_fd_data, >=, 0);
5910 (void) unlink(ztest_name_data);
5915 shared_data_size(ztest_shared_hdr_t *hdr)
5919 size = hdr->zh_hdr_size;
5920 size += hdr->zh_opts_size;
5921 size += hdr->zh_size;
5922 size += hdr->zh_stats_size * hdr->zh_stats_count;
5923 size += hdr->zh_ds_size * hdr->zh_ds_count;
5932 ztest_shared_hdr_t *hdr;
5934 hdr = (void *)mmap(0, P2ROUNDUP(sizeof (*hdr), getpagesize()),
5935 PROT_READ | PROT_WRITE, MAP_SHARED, ztest_fd_data, 0);
5936 ASSERT(hdr != MAP_FAILED);
5938 VERIFY3U(0, ==, ftruncate(ztest_fd_data, sizeof (ztest_shared_hdr_t)));
5940 hdr->zh_hdr_size = sizeof (ztest_shared_hdr_t);
5941 hdr->zh_opts_size = sizeof (ztest_shared_opts_t);
5942 hdr->zh_size = sizeof (ztest_shared_t);
5943 hdr->zh_stats_size = sizeof (ztest_shared_callstate_t);
5944 hdr->zh_stats_count = ZTEST_FUNCS;
5945 hdr->zh_ds_size = sizeof (ztest_shared_ds_t);
5946 hdr->zh_ds_count = ztest_opts.zo_datasets;
5948 size = shared_data_size(hdr);
5949 VERIFY3U(0, ==, ftruncate(ztest_fd_data, size));
5951 (void) munmap((caddr_t)hdr, P2ROUNDUP(sizeof (*hdr), getpagesize()));
5958 ztest_shared_hdr_t *hdr;
5961 hdr = (void *)mmap(0, P2ROUNDUP(sizeof (*hdr), getpagesize()),
5962 PROT_READ, MAP_SHARED, ztest_fd_data, 0);
5963 ASSERT(hdr != MAP_FAILED);
5965 size = shared_data_size(hdr);
5967 (void) munmap((caddr_t)hdr, P2ROUNDUP(sizeof (*hdr), getpagesize()));
5968 hdr = ztest_shared_hdr = (void *)mmap(0, P2ROUNDUP(size, getpagesize()),
5969 PROT_READ | PROT_WRITE, MAP_SHARED, ztest_fd_data, 0);
5970 ASSERT(hdr != MAP_FAILED);
5971 buf = (uint8_t *)hdr;
5973 offset = hdr->zh_hdr_size;
5974 ztest_shared_opts = (void *)&buf[offset];
5975 offset += hdr->zh_opts_size;
5976 ztest_shared = (void *)&buf[offset];
5977 offset += hdr->zh_size;
5978 ztest_shared_callstate = (void *)&buf[offset];
5979 offset += hdr->zh_stats_size * hdr->zh_stats_count;
5980 ztest_shared_ds = (void *)&buf[offset];
5984 exec_child(char *cmd, char *libpath, boolean_t ignorekill, int *statusp)
5988 char *cmdbuf = NULL;
5993 cmdbuf = umem_alloc(MAXPATHLEN, UMEM_NOFAIL);
5994 (void) strlcpy(cmdbuf, getexecname(), MAXPATHLEN);
5999 fatal(1, "fork failed");
6001 if (pid == 0) { /* child */
6002 char *emptyargv[2] = { cmd, NULL };
6003 char fd_data_str[12];
6005 struct rlimit rl = { 1024, 1024 };
6006 (void) setrlimit(RLIMIT_NOFILE, &rl);
6008 (void) close(ztest_fd_rand);
6010 snprintf(fd_data_str, 12, "%d", ztest_fd_data));
6011 VERIFY0(setenv("ZTEST_FD_DATA", fd_data_str, 1));
6013 (void) enable_extended_FILE_stdio(-1, -1);
6014 if (libpath != NULL)
6015 VERIFY(0 == setenv("LD_LIBRARY_PATH", libpath, 1));
6017 (void) execv(cmd, emptyargv);
6019 (void) execvp(cmd, emptyargv);
6021 ztest_dump_core = B_FALSE;
6022 fatal(B_TRUE, "exec failed: %s", cmd);
6025 if (cmdbuf != NULL) {
6026 umem_free(cmdbuf, MAXPATHLEN);
6030 while (waitpid(pid, &status, 0) != pid)
6032 if (statusp != NULL)
6035 if (WIFEXITED(status)) {
6036 if (WEXITSTATUS(status) != 0) {
6037 (void) fprintf(stderr, "child exited with code %d\n",
6038 WEXITSTATUS(status));
6042 } else if (WIFSIGNALED(status)) {
6043 if (!ignorekill || WTERMSIG(status) != SIGKILL) {
6044 (void) fprintf(stderr, "child died with signal %d\n",
6050 (void) fprintf(stderr, "something strange happened to child\n");
6057 ztest_run_init(void)
6059 ztest_shared_t *zs = ztest_shared;
6061 ASSERT(ztest_opts.zo_init != 0);
6064 * Blow away any existing copy of zpool.cache
6066 (void) remove(spa_config_path);
6069 * Create and initialize our storage pool.
6071 for (int i = 1; i <= ztest_opts.zo_init; i++) {
6072 bzero(zs, sizeof (ztest_shared_t));
6073 if (ztest_opts.zo_verbose >= 3 &&
6074 ztest_opts.zo_init != 1) {
6075 (void) printf("ztest_init(), pass %d\n", i);
6082 main(int argc, char **argv)
6090 ztest_shared_callstate_t *zc;
6096 char *fd_data_str = getenv("ZTEST_FD_DATA");
6098 (void) setvbuf(stdout, NULL, _IOLBF, 0);
6100 dprintf_setup(&argc, argv);
6101 zfs_deadman_synctime_ms = 300000;
6103 ztest_fd_rand = open("/dev/urandom", O_RDONLY);
6104 ASSERT3S(ztest_fd_rand, >=, 0);
6107 process_options(argc, argv);
6112 bcopy(&ztest_opts, ztest_shared_opts,
6113 sizeof (*ztest_shared_opts));
6115 ztest_fd_data = atoi(fd_data_str);
6117 bcopy(ztest_shared_opts, &ztest_opts, sizeof (ztest_opts));
6119 ASSERT3U(ztest_opts.zo_datasets, ==, ztest_shared_hdr->zh_ds_count);
6121 /* Override location of zpool.cache */
6122 VERIFY3U(asprintf((char **)&spa_config_path, "%s/zpool.cache",
6123 ztest_opts.zo_dir), !=, -1);
6125 ztest_ds = umem_alloc(ztest_opts.zo_datasets * sizeof (ztest_ds_t),
6130 metaslab_gang_bang = ztest_opts.zo_metaslab_gang_bang;
6131 metaslab_df_alloc_threshold =
6132 zs->zs_metaslab_df_alloc_threshold;
6141 hasalt = (strlen(ztest_opts.zo_alt_ztest) != 0);
6143 if (ztest_opts.zo_verbose >= 1) {
6144 (void) printf("%llu vdevs, %d datasets, %d threads,"
6145 " %llu seconds...\n",
6146 (u_longlong_t)ztest_opts.zo_vdevs,
6147 ztest_opts.zo_datasets,
6148 ztest_opts.zo_threads,
6149 (u_longlong_t)ztest_opts.zo_time);
6152 cmd = umem_alloc(MAXNAMELEN, UMEM_NOFAIL);
6153 (void) strlcpy(cmd, getexecname(), MAXNAMELEN);
6155 zs->zs_do_init = B_TRUE;
6156 if (strlen(ztest_opts.zo_alt_ztest) != 0) {
6157 if (ztest_opts.zo_verbose >= 1) {
6158 (void) printf("Executing older ztest for "
6159 "initialization: %s\n", ztest_opts.zo_alt_ztest);
6161 VERIFY(!exec_child(ztest_opts.zo_alt_ztest,
6162 ztest_opts.zo_alt_libpath, B_FALSE, NULL));
6164 VERIFY(!exec_child(NULL, NULL, B_FALSE, NULL));
6166 zs->zs_do_init = B_FALSE;
6168 zs->zs_proc_start = gethrtime();
6169 zs->zs_proc_stop = zs->zs_proc_start + ztest_opts.zo_time * NANOSEC;
6171 for (int f = 0; f < ZTEST_FUNCS; f++) {
6172 zi = &ztest_info[f];
6173 zc = ZTEST_GET_SHARED_CALLSTATE(f);
6174 if (zs->zs_proc_start + zi->zi_interval[0] > zs->zs_proc_stop)
6175 zc->zc_next = UINT64_MAX;
6177 zc->zc_next = zs->zs_proc_start +
6178 ztest_random(2 * zi->zi_interval[0] + 1);
6182 * Run the tests in a loop. These tests include fault injection
6183 * to verify that self-healing data works, and forced crashes
6184 * to verify that we never lose on-disk consistency.
6186 while (gethrtime() < zs->zs_proc_stop) {
6191 * Initialize the workload counters for each function.
6193 for (int f = 0; f < ZTEST_FUNCS; f++) {
6194 zc = ZTEST_GET_SHARED_CALLSTATE(f);
6199 /* Set the allocation switch size */
6200 zs->zs_metaslab_df_alloc_threshold =
6201 ztest_random(zs->zs_metaslab_sz / 4) + 1;
6203 if (!hasalt || ztest_random(2) == 0) {
6204 if (hasalt && ztest_opts.zo_verbose >= 1) {
6205 (void) printf("Executing newer ztest: %s\n",
6209 killed = exec_child(cmd, NULL, B_TRUE, &status);
6211 if (hasalt && ztest_opts.zo_verbose >= 1) {
6212 (void) printf("Executing older ztest: %s\n",
6213 ztest_opts.zo_alt_ztest);
6216 killed = exec_child(ztest_opts.zo_alt_ztest,
6217 ztest_opts.zo_alt_libpath, B_TRUE, &status);
6224 if (ztest_opts.zo_verbose >= 1) {
6225 hrtime_t now = gethrtime();
6227 now = MIN(now, zs->zs_proc_stop);
6228 print_time(zs->zs_proc_stop - now, timebuf);
6229 nicenum(zs->zs_space, numbuf);
6231 (void) printf("Pass %3d, %8s, %3llu ENOSPC, "
6232 "%4.1f%% of %5s used, %3.0f%% done, %8s to go\n",
6234 WIFEXITED(status) ? "Complete" : "SIGKILL",
6235 (u_longlong_t)zs->zs_enospc_count,
6236 100.0 * zs->zs_alloc / zs->zs_space,
6238 100.0 * (now - zs->zs_proc_start) /
6239 (ztest_opts.zo_time * NANOSEC), timebuf);
6242 if (ztest_opts.zo_verbose >= 2) {
6243 (void) printf("\nWorkload summary:\n\n");
6244 (void) printf("%7s %9s %s\n",
6245 "Calls", "Time", "Function");
6246 (void) printf("%7s %9s %s\n",
6247 "-----", "----", "--------");
6248 for (int f = 0; f < ZTEST_FUNCS; f++) {
6251 zi = &ztest_info[f];
6252 zc = ZTEST_GET_SHARED_CALLSTATE(f);
6253 print_time(zc->zc_time, timebuf);
6254 (void) dladdr((void *)zi->zi_func, &dli);
6255 (void) printf("%7llu %9s %s\n",
6256 (u_longlong_t)zc->zc_count, timebuf,
6259 (void) printf("\n");
6263 * It's possible that we killed a child during a rename test,
6264 * in which case we'll have a 'ztest_tmp' pool lying around
6265 * instead of 'ztest'. Do a blind rename in case this happened.
6268 if (spa_open(ztest_opts.zo_pool, &spa, FTAG) == 0) {
6269 spa_close(spa, FTAG);
6271 char tmpname[MAXNAMELEN];
6273 kernel_init(FREAD | FWRITE);
6274 (void) snprintf(tmpname, sizeof (tmpname), "%s_tmp",
6275 ztest_opts.zo_pool);
6276 (void) spa_rename(tmpname, ztest_opts.zo_pool);
6280 ztest_run_zdb(ztest_opts.zo_pool);
6283 if (ztest_opts.zo_verbose >= 1) {
6285 (void) printf("%d runs of older ztest: %s\n", older,
6286 ztest_opts.zo_alt_ztest);
6287 (void) printf("%d runs of newer ztest: %s\n", newer,
6290 (void) printf("%d killed, %d completed, %.0f%% kill rate\n",
6291 kills, iters - kills, (100.0 * kills) / MAX(1, iters));
6294 umem_free(cmd, MAXNAMELEN);