diff options
Diffstat (limited to 'cmd/ztest')
| -rw-r--r-- | cmd/ztest/ztest.c | 3475 |
1 files changed, 3475 insertions, 0 deletions
diff --git a/cmd/ztest/ztest.c b/cmd/ztest/ztest.c new file mode 100644 index 000000000..53cc6c709 --- /dev/null +++ b/cmd/ztest/ztest.c @@ -0,0 +1,3475 @@ +/* + * CDDL HEADER START + * + * The contents of this file are subject to the terms of the + * Common Development and Distribution License (the "License"). + * You may not use this file except in compliance with the License. + * + * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE + * or http://www.opensolaris.org/os/licensing. + * See the License for the specific language governing permissions + * and limitations under the License. + * + * When distributing Covered Code, include this CDDL HEADER in each + * file and include the License file at usr/src/OPENSOLARIS.LICENSE. + * If applicable, add the following below this CDDL HEADER, with the + * fields enclosed by brackets "[]" replaced with your own identifying + * information: Portions Copyright [yyyy] [name of copyright owner] + * + * CDDL HEADER END + */ +/* + * Copyright 2008 Sun Microsystems, Inc. All rights reserved. + * Use is subject to license terms. + */ + +/* + * The objective of this program is to provide a DMU/ZAP/SPA stress test + * that runs entirely in userland, is easy to use, and easy to extend. + * + * The overall design of the ztest program is as follows: + * + * (1) For each major functional area (e.g. adding vdevs to a pool, + * creating and destroying datasets, reading and writing objects, etc) + * we have a simple routine to test that functionality. These + * individual routines do not have to do anything "stressful". + * + * (2) We turn these simple functionality tests into a stress test by + * running them all in parallel, with as many threads as desired, + * and spread across as many datasets, objects, and vdevs as desired. + * + * (3) While all this is happening, we inject faults into the pool to + * verify that self-healing data really works. + * + * (4) Every time we open a dataset, we change its checksum and compression + * functions. Thus even individual objects vary from block to block + * in which checksum they use and whether they're compressed. + * + * (5) To verify that we never lose on-disk consistency after a crash, + * we run the entire test in a child of the main process. + * At random times, the child self-immolates with a SIGKILL. + * This is the software equivalent of pulling the power cord. + * The parent then runs the test again, using the existing + * storage pool, as many times as desired. + * + * (6) To verify that we don't have future leaks or temporal incursions, + * many of the functional tests record the transaction group number + * as part of their data. When reading old data, they verify that + * the transaction group number is less than the current, open txg. + * If you add a new test, please do this if applicable. + * + * When run with no arguments, ztest runs for about five minutes and + * produces no output if successful. To get a little bit of information, + * specify -V. To get more information, specify -VV, and so on. + * + * To turn this into an overnight stress test, use -T to specify run time. + * + * You can ask more more vdevs [-v], datasets [-d], or threads [-t] + * to increase the pool capacity, fanout, and overall stress level. + * + * The -N(okill) option will suppress kills, so each child runs to completion. + * This can be useful when you're trying to distinguish temporal incursions + * from plain old race conditions. + */ + +#include <sys/zfs_context.h> +#include <sys/spa.h> +#include <sys/dmu.h> +#include <sys/txg.h> +#include <sys/zap.h> +#include <sys/dmu_objset.h> +#include <sys/poll.h> +#include <sys/stat.h> +#include <sys/time.h> +#include <sys/wait.h> +#include <sys/mman.h> +#include <sys/resource.h> +#include <sys/zio.h> +#include <sys/zio_checksum.h> +#include <sys/zio_compress.h> +#include <sys/zil.h> +#include <sys/vdev_impl.h> +#include <sys/vdev_file.h> +#include <sys/spa_impl.h> +#include <sys/dsl_prop.h> +#include <sys/refcount.h> +#include <stdio.h> +#include <stdio_ext.h> +#include <stdlib.h> +#include <unistd.h> +#include <signal.h> +#include <umem.h> +#include <dlfcn.h> +#include <ctype.h> +#include <math.h> +#include <sys/fs/zfs.h> + +static char cmdname[] = "ztest"; +static char *zopt_pool = cmdname; + +static uint64_t zopt_vdevs = 5; +static uint64_t zopt_vdevtime; +static int zopt_ashift = SPA_MINBLOCKSHIFT; +static int zopt_mirrors = 2; +static int zopt_raidz = 4; +static int zopt_raidz_parity = 1; +static size_t zopt_vdev_size = SPA_MINDEVSIZE; +static int zopt_datasets = 7; +static int zopt_threads = 23; +static uint64_t zopt_passtime = 60; /* 60 seconds */ +static uint64_t zopt_killrate = 70; /* 70% kill rate */ +static int zopt_verbose = 0; +static int zopt_init = 1; +static char *zopt_dir = "/tmp"; +static uint64_t zopt_time = 300; /* 5 minutes */ +static int zopt_maxfaults; + +typedef struct ztest_block_tag { + uint64_t bt_objset; + uint64_t bt_object; + uint64_t bt_offset; + uint64_t bt_txg; + uint64_t bt_thread; + uint64_t bt_seq; +} ztest_block_tag_t; + +typedef struct ztest_args { + char za_pool[MAXNAMELEN]; + spa_t *za_spa; + objset_t *za_os; + zilog_t *za_zilog; + thread_t za_thread; + uint64_t za_instance; + uint64_t za_random; + uint64_t za_diroff; + uint64_t za_diroff_shared; + uint64_t za_zil_seq; + hrtime_t za_start; + hrtime_t za_stop; + hrtime_t za_kill; + /* + * Thread-local variables can go here to aid debugging. + */ + ztest_block_tag_t za_rbt; + ztest_block_tag_t za_wbt; + dmu_object_info_t za_doi; + dmu_buf_t *za_dbuf; +} ztest_args_t; + +typedef void ztest_func_t(ztest_args_t *); + +/* + * Note: these aren't static because we want dladdr() to work. + */ +ztest_func_t ztest_dmu_read_write; +ztest_func_t ztest_dmu_write_parallel; +ztest_func_t ztest_dmu_object_alloc_free; +ztest_func_t ztest_zap; +ztest_func_t ztest_zap_parallel; +ztest_func_t ztest_traverse; +ztest_func_t ztest_dsl_prop_get_set; +ztest_func_t ztest_dmu_objset_create_destroy; +ztest_func_t ztest_dmu_snapshot_create_destroy; +ztest_func_t ztest_spa_create_destroy; +ztest_func_t ztest_fault_inject; +ztest_func_t ztest_spa_rename; +ztest_func_t ztest_vdev_attach_detach; +ztest_func_t ztest_vdev_LUN_growth; +ztest_func_t ztest_vdev_add_remove; +ztest_func_t ztest_vdev_aux_add_remove; +ztest_func_t ztest_scrub; + +typedef struct ztest_info { + ztest_func_t *zi_func; /* test function */ + uint64_t zi_iters; /* iterations per execution */ + uint64_t *zi_interval; /* execute every <interval> seconds */ + uint64_t zi_calls; /* per-pass count */ + uint64_t zi_call_time; /* per-pass time */ + uint64_t zi_call_total; /* cumulative total */ + uint64_t zi_call_target; /* target cumulative total */ +} ztest_info_t; + +uint64_t zopt_always = 0; /* all the time */ +uint64_t zopt_often = 1; /* every second */ +uint64_t zopt_sometimes = 10; /* every 10 seconds */ +uint64_t zopt_rarely = 60; /* every 60 seconds */ + +ztest_info_t ztest_info[] = { + { ztest_dmu_read_write, 1, &zopt_always }, + { ztest_dmu_write_parallel, 30, &zopt_always }, + { ztest_dmu_object_alloc_free, 1, &zopt_always }, + { ztest_zap, 30, &zopt_always }, + { ztest_zap_parallel, 100, &zopt_always }, + { ztest_dsl_prop_get_set, 1, &zopt_sometimes }, + { ztest_dmu_objset_create_destroy, 1, &zopt_sometimes }, + { ztest_dmu_snapshot_create_destroy, 1, &zopt_sometimes }, + { ztest_spa_create_destroy, 1, &zopt_sometimes }, + { ztest_fault_inject, 1, &zopt_sometimes }, + { ztest_spa_rename, 1, &zopt_rarely }, + { ztest_vdev_attach_detach, 1, &zopt_rarely }, + { ztest_vdev_LUN_growth, 1, &zopt_rarely }, + { ztest_vdev_add_remove, 1, &zopt_vdevtime }, + { ztest_vdev_aux_add_remove, 1, &zopt_vdevtime }, + { ztest_scrub, 1, &zopt_vdevtime }, +}; + +#define ZTEST_FUNCS (sizeof (ztest_info) / sizeof (ztest_info_t)) + +#define ZTEST_SYNC_LOCKS 16 + +/* + * Stuff we need to share writably between parent and child. + */ +typedef struct ztest_shared { + mutex_t zs_vdev_lock; + rwlock_t zs_name_lock; + uint64_t zs_vdev_primaries; + uint64_t zs_vdev_aux; + uint64_t zs_enospc_count; + hrtime_t zs_start_time; + hrtime_t zs_stop_time; + uint64_t zs_alloc; + uint64_t zs_space; + ztest_info_t zs_info[ZTEST_FUNCS]; + mutex_t zs_sync_lock[ZTEST_SYNC_LOCKS]; + uint64_t zs_seq[ZTEST_SYNC_LOCKS]; +} ztest_shared_t; + +static char ztest_dev_template[] = "%s/%s.%llua"; +static char ztest_aux_template[] = "%s/%s.%s.%llu"; +static ztest_shared_t *ztest_shared; + +static int ztest_random_fd; +static int ztest_dump_core = 1; + +static boolean_t ztest_exiting; + +extern uint64_t metaslab_gang_bang; + +#define ZTEST_DIROBJ 1 +#define ZTEST_MICROZAP_OBJ 2 +#define ZTEST_FATZAP_OBJ 3 + +#define ZTEST_DIROBJ_BLOCKSIZE (1 << 10) +#define ZTEST_DIRSIZE 256 + +static void usage(boolean_t) __NORETURN; + +/* + * These libumem hooks provide a reasonable set of defaults for the allocator's + * debugging facilities. + */ +const char * +_umem_debug_init() +{ + return ("default,verbose"); /* $UMEM_DEBUG setting */ +} + +const char * +_umem_logging_init(void) +{ + return ("fail,contents"); /* $UMEM_LOGGING setting */ +} + +#define FATAL_MSG_SZ 1024 + +char *fatal_msg; + +static void +fatal(int do_perror, char *message, ...) +{ + va_list args; + int save_errno = errno; + char buf[FATAL_MSG_SZ]; + + (void) fflush(stdout); + + va_start(args, message); + (void) sprintf(buf, "ztest: "); + /* LINTED */ + (void) vsprintf(buf + strlen(buf), message, args); + va_end(args); + if (do_perror) { + (void) snprintf(buf + strlen(buf), FATAL_MSG_SZ - strlen(buf), + ": %s", strerror(save_errno)); + } + (void) fprintf(stderr, "%s\n", buf); + fatal_msg = buf; /* to ease debugging */ + if (ztest_dump_core) + abort(); + exit(3); +} + +static int +str2shift(const char *buf) +{ + const char *ends = "BKMGTPEZ"; + int i; + + if (buf[0] == '\0') + return (0); + for (i = 0; i < strlen(ends); i++) { + if (toupper(buf[0]) == ends[i]) + break; + } + if (i == strlen(ends)) { + (void) fprintf(stderr, "ztest: invalid bytes suffix: %s\n", + buf); + usage(B_FALSE); + } + if (buf[1] == '\0' || (toupper(buf[1]) == 'B' && buf[2] == '\0')) { + return (10*i); + } + (void) fprintf(stderr, "ztest: invalid bytes suffix: %s\n", buf); + usage(B_FALSE); + /* NOTREACHED */ +} + +static uint64_t +nicenumtoull(const char *buf) +{ + char *end; + uint64_t val; + + val = strtoull(buf, &end, 0); + if (end == buf) { + (void) fprintf(stderr, "ztest: bad numeric value: %s\n", buf); + usage(B_FALSE); + } else if (end[0] == '.') { + double fval = strtod(buf, &end); + fval *= pow(2, str2shift(end)); + if (fval > UINT64_MAX) { + (void) fprintf(stderr, "ztest: value too large: %s\n", + buf); + usage(B_FALSE); + } + val = (uint64_t)fval; + } else { + int shift = str2shift(end); + if (shift >= 64 || (val << shift) >> shift != val) { + (void) fprintf(stderr, "ztest: value too large: %s\n", + buf); + usage(B_FALSE); + } + val <<= shift; + } + return (val); +} + +static void +usage(boolean_t requested) +{ + char nice_vdev_size[10]; + char nice_gang_bang[10]; + FILE *fp = requested ? stdout : stderr; + + nicenum(zopt_vdev_size, nice_vdev_size); + nicenum(metaslab_gang_bang, nice_gang_bang); + + (void) fprintf(fp, "Usage: %s\n" + "\t[-v vdevs (default: %llu)]\n" + "\t[-s size_of_each_vdev (default: %s)]\n" + "\t[-a alignment_shift (default: %d) (use 0 for random)]\n" + "\t[-m mirror_copies (default: %d)]\n" + "\t[-r raidz_disks (default: %d)]\n" + "\t[-R raidz_parity (default: %d)]\n" + "\t[-d datasets (default: %d)]\n" + "\t[-t threads (default: %d)]\n" + "\t[-g gang_block_threshold (default: %s)]\n" + "\t[-i initialize pool i times (default: %d)]\n" + "\t[-k kill percentage (default: %llu%%)]\n" + "\t[-p pool_name (default: %s)]\n" + "\t[-f file directory for vdev files (default: %s)]\n" + "\t[-V(erbose)] (use multiple times for ever more blather)\n" + "\t[-E(xisting)] (use existing pool instead of creating new one)\n" + "\t[-T time] total run time (default: %llu sec)\n" + "\t[-P passtime] time per pass (default: %llu sec)\n" + "\t[-h] (print help)\n" + "", + cmdname, + (u_longlong_t)zopt_vdevs, /* -v */ + nice_vdev_size, /* -s */ + zopt_ashift, /* -a */ + zopt_mirrors, /* -m */ + zopt_raidz, /* -r */ + zopt_raidz_parity, /* -R */ + zopt_datasets, /* -d */ + zopt_threads, /* -t */ + nice_gang_bang, /* -g */ + zopt_init, /* -i */ + (u_longlong_t)zopt_killrate, /* -k */ + zopt_pool, /* -p */ + zopt_dir, /* -f */ + (u_longlong_t)zopt_time, /* -T */ + (u_longlong_t)zopt_passtime); /* -P */ + exit(requested ? 0 : 1); +} + +static uint64_t +ztest_random(uint64_t range) +{ + uint64_t r; + + if (range == 0) + return (0); + + if (read(ztest_random_fd, &r, sizeof (r)) != sizeof (r)) + fatal(1, "short read from /dev/urandom"); + + return (r % range); +} + +static void +ztest_record_enospc(char *s) +{ + dprintf("ENOSPC doing: %s\n", s ? s : "<unknown>"); + ztest_shared->zs_enospc_count++; +} + +static void +process_options(int argc, char **argv) +{ + int opt; + uint64_t value; + + /* By default, test gang blocks for blocks 32K and greater */ + metaslab_gang_bang = 32 << 10; + + while ((opt = getopt(argc, argv, + "v:s:a:m:r:R:d:t:g:i:k:p:f:VET:P:h")) != EOF) { + value = 0; + switch (opt) { + case 'v': + case 's': + case 'a': + case 'm': + case 'r': + case 'R': + case 'd': + case 't': + case 'g': + case 'i': + case 'k': + case 'T': + case 'P': + value = nicenumtoull(optarg); + } + switch (opt) { + case 'v': + zopt_vdevs = value; + break; + case 's': + zopt_vdev_size = MAX(SPA_MINDEVSIZE, value); + break; + case 'a': + zopt_ashift = value; + break; + case 'm': + zopt_mirrors = value; + break; + case 'r': + zopt_raidz = MAX(1, value); + break; + case 'R': + zopt_raidz_parity = MIN(MAX(value, 1), 2); + break; + case 'd': + zopt_datasets = MAX(1, value); + break; + case 't': + zopt_threads = MAX(1, value); + break; + case 'g': + metaslab_gang_bang = MAX(SPA_MINBLOCKSIZE << 1, value); + break; + case 'i': + zopt_init = value; + break; + case 'k': + zopt_killrate = value; + break; + case 'p': + zopt_pool = strdup(optarg); + break; + case 'f': + zopt_dir = strdup(optarg); + break; + case 'V': + zopt_verbose++; + break; + case 'E': + zopt_init = 0; + break; + case 'T': + zopt_time = value; + break; + case 'P': + zopt_passtime = MAX(1, value); + break; + case 'h': + usage(B_TRUE); + break; + case '?': + default: + usage(B_FALSE); + break; + } + } + + zopt_raidz_parity = MIN(zopt_raidz_parity, zopt_raidz - 1); + + zopt_vdevtime = (zopt_vdevs > 0 ? zopt_time / zopt_vdevs : UINT64_MAX); + zopt_maxfaults = MAX(zopt_mirrors, 1) * (zopt_raidz_parity + 1) - 1; +} + +static uint64_t +ztest_get_ashift(void) +{ + if (zopt_ashift == 0) + return (SPA_MINBLOCKSHIFT + ztest_random(3)); + return (zopt_ashift); +} + +static nvlist_t * +make_vdev_file(char *path, char *aux, size_t size, uint64_t ashift) +{ + char pathbuf[MAXPATHLEN]; + uint64_t vdev; + nvlist_t *file; + + if (ashift == 0) + ashift = ztest_get_ashift(); + + if (path == NULL) { + path = pathbuf; + + if (aux != NULL) { + vdev = ztest_shared->zs_vdev_aux; + (void) sprintf(path, ztest_aux_template, + zopt_dir, zopt_pool, aux, vdev); + } else { + vdev = ztest_shared->zs_vdev_primaries++; + (void) sprintf(path, ztest_dev_template, + zopt_dir, zopt_pool, vdev); + } + } + + if (size != 0) { + int fd = open(path, O_RDWR | O_CREAT | O_TRUNC, 0666); + if (fd == -1) + fatal(1, "can't open %s", path); + if (ftruncate(fd, size) != 0) + fatal(1, "can't ftruncate %s", path); + (void) close(fd); + } + + VERIFY(nvlist_alloc(&file, NV_UNIQUE_NAME, 0) == 0); + VERIFY(nvlist_add_string(file, ZPOOL_CONFIG_TYPE, VDEV_TYPE_FILE) == 0); + VERIFY(nvlist_add_string(file, ZPOOL_CONFIG_PATH, path) == 0); + VERIFY(nvlist_add_uint64(file, ZPOOL_CONFIG_ASHIFT, ashift) == 0); + + return (file); +} + +static nvlist_t * +make_vdev_raidz(char *path, char *aux, size_t size, uint64_t ashift, int r) +{ + nvlist_t *raidz, **child; + int c; + + if (r < 2) + return (make_vdev_file(path, aux, size, ashift)); + child = umem_alloc(r * sizeof (nvlist_t *), UMEM_NOFAIL); + + for (c = 0; c < r; c++) + child[c] = make_vdev_file(path, aux, size, ashift); + + VERIFY(nvlist_alloc(&raidz, NV_UNIQUE_NAME, 0) == 0); + VERIFY(nvlist_add_string(raidz, ZPOOL_CONFIG_TYPE, + VDEV_TYPE_RAIDZ) == 0); + VERIFY(nvlist_add_uint64(raidz, ZPOOL_CONFIG_NPARITY, + zopt_raidz_parity) == 0); + VERIFY(nvlist_add_nvlist_array(raidz, ZPOOL_CONFIG_CHILDREN, + child, r) == 0); + + for (c = 0; c < r; c++) + nvlist_free(child[c]); + + umem_free(child, r * sizeof (nvlist_t *)); + + return (raidz); +} + +static nvlist_t * +make_vdev_mirror(char *path, char *aux, size_t size, uint64_t ashift, + int r, int m) +{ + nvlist_t *mirror, **child; + int c; + + if (m < 1) + return (make_vdev_raidz(path, aux, size, ashift, r)); + + child = umem_alloc(m * sizeof (nvlist_t *), UMEM_NOFAIL); + + for (c = 0; c < m; c++) + child[c] = make_vdev_raidz(path, aux, size, ashift, r); + + VERIFY(nvlist_alloc(&mirror, NV_UNIQUE_NAME, 0) == 0); + VERIFY(nvlist_add_string(mirror, ZPOOL_CONFIG_TYPE, + VDEV_TYPE_MIRROR) == 0); + VERIFY(nvlist_add_nvlist_array(mirror, ZPOOL_CONFIG_CHILDREN, + child, m) == 0); + + for (c = 0; c < m; c++) + nvlist_free(child[c]); + + umem_free(child, m * sizeof (nvlist_t *)); + + return (mirror); +} + +static nvlist_t * +make_vdev_root(char *path, char *aux, size_t size, uint64_t ashift, + int log, int r, int m, int t) +{ + nvlist_t *root, **child; + int c; + + ASSERT(t > 0); + + child = umem_alloc(t * sizeof (nvlist_t *), UMEM_NOFAIL); + + for (c = 0; c < t; c++) { + child[c] = make_vdev_mirror(path, aux, size, ashift, r, m); + VERIFY(nvlist_add_uint64(child[c], ZPOOL_CONFIG_IS_LOG, + log) == 0); + } + + VERIFY(nvlist_alloc(&root, NV_UNIQUE_NAME, 0) == 0); + VERIFY(nvlist_add_string(root, ZPOOL_CONFIG_TYPE, VDEV_TYPE_ROOT) == 0); + VERIFY(nvlist_add_nvlist_array(root, aux ? aux : ZPOOL_CONFIG_CHILDREN, + child, t) == 0); + + for (c = 0; c < t; c++) + nvlist_free(child[c]); + + umem_free(child, t * sizeof (nvlist_t *)); + + return (root); +} + +static void +ztest_set_random_blocksize(objset_t *os, uint64_t object, dmu_tx_t *tx) +{ + int bs = SPA_MINBLOCKSHIFT + + ztest_random(SPA_MAXBLOCKSHIFT - SPA_MINBLOCKSHIFT + 1); + int ibs = DN_MIN_INDBLKSHIFT + + ztest_random(DN_MAX_INDBLKSHIFT - DN_MIN_INDBLKSHIFT + 1); + int error; + + error = dmu_object_set_blocksize(os, object, 1ULL << bs, ibs, tx); + if (error) { + char osname[300]; + dmu_objset_name(os, osname); + fatal(0, "dmu_object_set_blocksize('%s', %llu, %d, %d) = %d", + osname, object, 1 << bs, ibs, error); + } +} + +static uint8_t +ztest_random_checksum(void) +{ + uint8_t checksum; + + do { + checksum = ztest_random(ZIO_CHECKSUM_FUNCTIONS); + } while (zio_checksum_table[checksum].ci_zbt); + + if (checksum == ZIO_CHECKSUM_OFF) + checksum = ZIO_CHECKSUM_ON; + + return (checksum); +} + +static uint8_t +ztest_random_compress(void) +{ + return ((uint8_t)ztest_random(ZIO_COMPRESS_FUNCTIONS)); +} + +typedef struct ztest_replay { + objset_t *zr_os; + uint64_t zr_assign; +} ztest_replay_t; + +static int +ztest_replay_create(ztest_replay_t *zr, lr_create_t *lr, boolean_t byteswap) +{ + objset_t *os = zr->zr_os; + dmu_tx_t *tx; + int error; + + if (byteswap) + byteswap_uint64_array(lr, sizeof (*lr)); + + tx = dmu_tx_create(os); + dmu_tx_hold_bonus(tx, DMU_NEW_OBJECT); + error = dmu_tx_assign(tx, zr->zr_assign); + if (error) { + dmu_tx_abort(tx); + return (error); + } + + error = dmu_object_claim(os, lr->lr_doid, lr->lr_mode, 0, + DMU_OT_NONE, 0, tx); + ASSERT3U(error, ==, 0); + dmu_tx_commit(tx); + + if (zopt_verbose >= 5) { + char osname[MAXNAMELEN]; + dmu_objset_name(os, osname); + (void) printf("replay create of %s object %llu" + " in txg %llu = %d\n", + osname, (u_longlong_t)lr->lr_doid, + (u_longlong_t)zr->zr_assign, error); + } + + return (error); +} + +static int +ztest_replay_remove(ztest_replay_t *zr, lr_remove_t *lr, boolean_t byteswap) +{ + objset_t *os = zr->zr_os; + dmu_tx_t *tx; + int error; + + if (byteswap) + byteswap_uint64_array(lr, sizeof (*lr)); + + tx = dmu_tx_create(os); + dmu_tx_hold_free(tx, lr->lr_doid, 0, DMU_OBJECT_END); + error = dmu_tx_assign(tx, zr->zr_assign); + if (error) { + dmu_tx_abort(tx); + return (error); + } + + error = dmu_object_free(os, lr->lr_doid, tx); + dmu_tx_commit(tx); + + return (error); +} + +zil_replay_func_t *ztest_replay_vector[TX_MAX_TYPE] = { + NULL, /* 0 no such transaction type */ + ztest_replay_create, /* TX_CREATE */ + NULL, /* TX_MKDIR */ + NULL, /* TX_MKXATTR */ + NULL, /* TX_SYMLINK */ + ztest_replay_remove, /* TX_REMOVE */ + NULL, /* TX_RMDIR */ + NULL, /* TX_LINK */ + NULL, /* TX_RENAME */ + NULL, /* TX_WRITE */ + NULL, /* TX_TRUNCATE */ + NULL, /* TX_SETATTR */ + NULL, /* TX_ACL */ +}; + +/* + * Verify that we can't destroy an active pool, create an existing pool, + * or create a pool with a bad vdev spec. + */ +void +ztest_spa_create_destroy(ztest_args_t *za) +{ + int error; + spa_t *spa; + nvlist_t *nvroot; + + /* + * Attempt to create using a bad file. + */ + nvroot = make_vdev_root("/dev/bogus", NULL, 0, 0, 0, 0, 0, 1); + error = spa_create("ztest_bad_file", nvroot, NULL, NULL, NULL); + nvlist_free(nvroot); + if (error != ENOENT) + fatal(0, "spa_create(bad_file) = %d", error); + + /* + * Attempt to create using a bad mirror. + */ + nvroot = make_vdev_root("/dev/bogus", NULL, 0, 0, 0, 0, 2, 1); + error = spa_create("ztest_bad_mirror", nvroot, NULL, NULL, NULL); + nvlist_free(nvroot); + if (error != ENOENT) + fatal(0, "spa_create(bad_mirror) = %d", error); + + /* + * Attempt to create an existing pool. It shouldn't matter + * what's in the nvroot; we should fail with EEXIST. + */ + (void) rw_rdlock(&ztest_shared->zs_name_lock); + nvroot = make_vdev_root("/dev/bogus", NULL, 0, 0, 0, 0, 0, 1); + error = spa_create(za->za_pool, nvroot, NULL, NULL, NULL); + nvlist_free(nvroot); + if (error != EEXIST) + fatal(0, "spa_create(whatever) = %d", error); + + error = spa_open(za->za_pool, &spa, FTAG); + if (error) + fatal(0, "spa_open() = %d", error); + + error = spa_destroy(za->za_pool); + if (error != EBUSY) + fatal(0, "spa_destroy() = %d", error); + + spa_close(spa, FTAG); + (void) rw_unlock(&ztest_shared->zs_name_lock); +} + +static vdev_t * +vdev_lookup_by_path(vdev_t *vd, const char *path) +{ + vdev_t *mvd; + + if (vd->vdev_path != NULL && strcmp(path, vd->vdev_path) == 0) + return (vd); + + for (int c = 0; c < vd->vdev_children; c++) + if ((mvd = vdev_lookup_by_path(vd->vdev_child[c], path)) != + NULL) + return (mvd); + + return (NULL); +} + +/* + * Verify that vdev_add() works as expected. + */ +void +ztest_vdev_add_remove(ztest_args_t *za) +{ + spa_t *spa = za->za_spa; + uint64_t leaves = MAX(zopt_mirrors, 1) * zopt_raidz; + nvlist_t *nvroot; + int error; + + (void) mutex_lock(&ztest_shared->zs_vdev_lock); + + spa_config_enter(spa, SCL_VDEV, FTAG, RW_READER); + + ztest_shared->zs_vdev_primaries = + spa->spa_root_vdev->vdev_children * leaves; + + spa_config_exit(spa, SCL_VDEV, FTAG); + + /* + * Make 1/4 of the devices be log devices. + */ + nvroot = make_vdev_root(NULL, NULL, zopt_vdev_size, 0, + ztest_random(4) == 0, zopt_raidz, zopt_mirrors, 1); + + error = spa_vdev_add(spa, nvroot); + nvlist_free(nvroot); + + (void) mutex_unlock(&ztest_shared->zs_vdev_lock); + + if (error == ENOSPC) + ztest_record_enospc("spa_vdev_add"); + else if (error != 0) + fatal(0, "spa_vdev_add() = %d", error); +} + +/* + * Verify that adding/removing aux devices (l2arc, hot spare) works as expected. + */ +void +ztest_vdev_aux_add_remove(ztest_args_t *za) +{ + spa_t *spa = za->za_spa; + vdev_t *rvd = spa->spa_root_vdev; + spa_aux_vdev_t *sav; + char *aux; + uint64_t guid = 0; + int error; + + if (ztest_random(2) == 0) { + sav = &spa->spa_spares; + aux = ZPOOL_CONFIG_SPARES; + } else { + sav = &spa->spa_l2cache; + aux = ZPOOL_CONFIG_L2CACHE; + } + + (void) mutex_lock(&ztest_shared->zs_vdev_lock); + + spa_config_enter(spa, SCL_VDEV, FTAG, RW_READER); + + if (sav->sav_count != 0 && ztest_random(4) == 0) { + /* + * Pick a random device to remove. + */ + guid = sav->sav_vdevs[ztest_random(sav->sav_count)]->vdev_guid; + } else { + /* + * Find an unused device we can add. + */ + ztest_shared->zs_vdev_aux = 0; + for (;;) { + char path[MAXPATHLEN]; + int c; + (void) sprintf(path, ztest_aux_template, zopt_dir, + zopt_pool, aux, ztest_shared->zs_vdev_aux); + for (c = 0; c < sav->sav_count; c++) + if (strcmp(sav->sav_vdevs[c]->vdev_path, + path) == 0) + break; + if (c == sav->sav_count && + vdev_lookup_by_path(rvd, path) == NULL) + break; + ztest_shared->zs_vdev_aux++; + } + } + + spa_config_exit(spa, SCL_VDEV, FTAG); + + if (guid == 0) { + /* + * Add a new device. + */ + nvlist_t *nvroot = make_vdev_root(NULL, aux, + (zopt_vdev_size * 5) / 4, 0, 0, 0, 0, 1); + error = spa_vdev_add(spa, nvroot); + if (error != 0) + fatal(0, "spa_vdev_add(%p) = %d", nvroot, error); + nvlist_free(nvroot); + } else { + /* + * Remove an existing device. Sometimes, dirty its + * vdev state first to make sure we handle removal + * of devices that have pending state changes. + */ + if (ztest_random(2) == 0) + (void) vdev_online(spa, guid, B_FALSE, NULL); + + error = spa_vdev_remove(spa, guid, B_FALSE); + if (error != 0 && error != EBUSY) + fatal(0, "spa_vdev_remove(%llu) = %d", guid, error); + } + + (void) mutex_unlock(&ztest_shared->zs_vdev_lock); +} + +/* + * Verify that we can attach and detach devices. + */ +void +ztest_vdev_attach_detach(ztest_args_t *za) +{ + spa_t *spa = za->za_spa; + spa_aux_vdev_t *sav = &spa->spa_spares; + vdev_t *rvd = spa->spa_root_vdev; + vdev_t *oldvd, *newvd, *pvd; + nvlist_t *root; + uint64_t leaves = MAX(zopt_mirrors, 1) * zopt_raidz; + uint64_t leaf, top; + uint64_t ashift = ztest_get_ashift(); + uint64_t oldguid; + size_t oldsize, newsize; + char oldpath[MAXPATHLEN], newpath[MAXPATHLEN]; + int replacing; + int oldvd_has_siblings = B_FALSE; + int newvd_is_spare = B_FALSE; + int oldvd_is_log; + int error, expected_error; + + (void) mutex_lock(&ztest_shared->zs_vdev_lock); + + spa_config_enter(spa, SCL_VDEV, FTAG, RW_READER); + + /* + * Decide whether to do an attach or a replace. + */ + replacing = ztest_random(2); + + /* + * Pick a random top-level vdev. + */ + top = ztest_random(rvd->vdev_children); + + /* + * Pick a random leaf within it. + */ + leaf = ztest_random(leaves); + + /* + * Locate this vdev. + */ + oldvd = rvd->vdev_child[top]; + if (zopt_mirrors >= 1) + oldvd = oldvd->vdev_child[leaf / zopt_raidz]; + if (zopt_raidz > 1) + oldvd = oldvd->vdev_child[leaf % zopt_raidz]; + + /* + * If we're already doing an attach or replace, oldvd may be a + * mirror vdev -- in which case, pick a random child. + */ + while (oldvd->vdev_children != 0) { + oldvd_has_siblings = B_TRUE; + ASSERT(oldvd->vdev_children == 2); + oldvd = oldvd->vdev_child[ztest_random(2)]; + } + + oldguid = oldvd->vdev_guid; + oldsize = vdev_get_rsize(oldvd); + oldvd_is_log = oldvd->vdev_top->vdev_islog; + (void) strcpy(oldpath, oldvd->vdev_path); + pvd = oldvd->vdev_parent; + + /* + * If oldvd has siblings, then half of the time, detach it. + */ + if (oldvd_has_siblings && ztest_random(2) == 0) { + spa_config_exit(spa, SCL_VDEV, FTAG); + error = spa_vdev_detach(spa, oldguid, B_FALSE); + if (error != 0 && error != ENODEV && error != EBUSY) + fatal(0, "detach (%s) returned %d", + oldpath, error); + (void) mutex_unlock(&ztest_shared->zs_vdev_lock); + return; + } + + /* + * For the new vdev, choose with equal probability between the two + * standard paths (ending in either 'a' or 'b') or a random hot spare. + */ + if (sav->sav_count != 0 && ztest_random(3) == 0) { + newvd = sav->sav_vdevs[ztest_random(sav->sav_count)]; + newvd_is_spare = B_TRUE; + (void) strcpy(newpath, newvd->vdev_path); + } else { + (void) snprintf(newpath, sizeof (newpath), ztest_dev_template, + zopt_dir, zopt_pool, top * leaves + leaf); + if (ztest_random(2) == 0) + newpath[strlen(newpath) - 1] = 'b'; + newvd = vdev_lookup_by_path(rvd, newpath); + } + + if (newvd) { + newsize = vdev_get_rsize(newvd); + } else { + /* + * Make newsize a little bigger or smaller than oldsize. + * If it's smaller, the attach should fail. + * If it's larger, and we're doing a replace, + * we should get dynamic LUN growth when we're done. + */ + newsize = 10 * oldsize / (9 + ztest_random(3)); + } + + /* + * If pvd is not a mirror or root, the attach should fail with ENOTSUP, + * unless it's a replace; in that case any non-replacing parent is OK. + * + * If newvd is already part of the pool, it should fail with EBUSY. + * + * If newvd is too small, it should fail with EOVERFLOW. + */ + if (pvd->vdev_ops != &vdev_mirror_ops && + pvd->vdev_ops != &vdev_root_ops && (!replacing || + pvd->vdev_ops == &vdev_replacing_ops || + pvd->vdev_ops == &vdev_spare_ops)) + expected_error = ENOTSUP; + else if (newvd_is_spare && (!replacing || oldvd_is_log)) + expected_error = ENOTSUP; + else if (newvd == oldvd) + expected_error = replacing ? 0 : EBUSY; + else if (vdev_lookup_by_path(rvd, newpath) != NULL) + expected_error = EBUSY; + else if (newsize < oldsize) + expected_error = EOVERFLOW; + else if (ashift > oldvd->vdev_top->vdev_ashift) + expected_error = EDOM; + else + expected_error = 0; + + spa_config_exit(spa, SCL_VDEV, FTAG); + + /* + * Build the nvlist describing newpath. + */ + root = make_vdev_root(newpath, NULL, newvd == NULL ? newsize : 0, + ashift, 0, 0, 0, 1); + + error = spa_vdev_attach(spa, oldguid, root, replacing); + + nvlist_free(root); + + /* + * If our parent was the replacing vdev, but the replace completed, + * then instead of failing with ENOTSUP we may either succeed, + * fail with ENODEV, or fail with EOVERFLOW. + */ + if (expected_error == ENOTSUP && + (error == 0 || error == ENODEV || error == EOVERFLOW)) + expected_error = error; + + /* + * If someone grew the LUN, the replacement may be too small. + */ + if (error == EOVERFLOW || error == EBUSY) + expected_error = error; + + /* XXX workaround 6690467 */ + if (error != expected_error && expected_error != EBUSY) { + fatal(0, "attach (%s %llu, %s %llu, %d) " + "returned %d, expected %d", + oldpath, (longlong_t)oldsize, newpath, + (longlong_t)newsize, replacing, error, expected_error); + } + + (void) mutex_unlock(&ztest_shared->zs_vdev_lock); +} + +/* + * Verify that dynamic LUN growth works as expected. + */ +/* ARGSUSED */ +void +ztest_vdev_LUN_growth(ztest_args_t *za) +{ + spa_t *spa = za->za_spa; + char dev_name[MAXPATHLEN]; + uint64_t leaves = MAX(zopt_mirrors, 1) * zopt_raidz; + uint64_t vdev; + size_t fsize; + int fd; + + (void) mutex_lock(&ztest_shared->zs_vdev_lock); + + /* + * Pick a random leaf vdev. + */ + spa_config_enter(spa, SCL_VDEV, FTAG, RW_READER); + vdev = ztest_random(spa->spa_root_vdev->vdev_children * leaves); + spa_config_exit(spa, SCL_VDEV, FTAG); + + (void) sprintf(dev_name, ztest_dev_template, zopt_dir, zopt_pool, vdev); + + if ((fd = open(dev_name, O_RDWR)) != -1) { + /* + * Determine the size. + */ + fsize = lseek(fd, 0, SEEK_END); + + /* + * If it's less than 2x the original size, grow by around 3%. + */ + if (fsize < 2 * zopt_vdev_size) { + size_t newsize = fsize + ztest_random(fsize / 32); + (void) ftruncate(fd, newsize); + if (zopt_verbose >= 6) { + (void) printf("%s grew from %lu to %lu bytes\n", + dev_name, (ulong_t)fsize, (ulong_t)newsize); + } + } + (void) close(fd); + } + + (void) mutex_unlock(&ztest_shared->zs_vdev_lock); +} + +/* ARGSUSED */ +static void +ztest_create_cb(objset_t *os, void *arg, cred_t *cr, dmu_tx_t *tx) +{ + /* + * Create the directory object. + */ + VERIFY(dmu_object_claim(os, ZTEST_DIROBJ, + DMU_OT_UINT64_OTHER, ZTEST_DIROBJ_BLOCKSIZE, + DMU_OT_UINT64_OTHER, 5 * sizeof (ztest_block_tag_t), tx) == 0); + + VERIFY(zap_create_claim(os, ZTEST_MICROZAP_OBJ, + DMU_OT_ZAP_OTHER, DMU_OT_NONE, 0, tx) == 0); + + VERIFY(zap_create_claim(os, ZTEST_FATZAP_OBJ, + DMU_OT_ZAP_OTHER, DMU_OT_NONE, 0, tx) == 0); +} + +static int +ztest_destroy_cb(char *name, void *arg) +{ + ztest_args_t *za = arg; + objset_t *os; + dmu_object_info_t *doi = &za->za_doi; + int error; + + /* + * Verify that the dataset contains a directory object. + */ + error = dmu_objset_open(name, DMU_OST_OTHER, + DS_MODE_USER | DS_MODE_READONLY, &os); + ASSERT3U(error, ==, 0); + error = dmu_object_info(os, ZTEST_DIROBJ, doi); + if (error != ENOENT) { + /* We could have crashed in the middle of destroying it */ + ASSERT3U(error, ==, 0); + ASSERT3U(doi->doi_type, ==, DMU_OT_UINT64_OTHER); + ASSERT3S(doi->doi_physical_blks, >=, 0); + } + dmu_objset_close(os); + + /* + * Destroy the dataset. + */ + error = dmu_objset_destroy(name); + if (error) { + (void) dmu_objset_open(name, DMU_OST_OTHER, + DS_MODE_USER | DS_MODE_READONLY, &os); + fatal(0, "dmu_objset_destroy(os=%p) = %d\n", &os, error); + } + return (0); +} + +/* + * Verify that dmu_objset_{create,destroy,open,close} work as expected. + */ +static uint64_t +ztest_log_create(zilog_t *zilog, dmu_tx_t *tx, uint64_t object, int mode) +{ + itx_t *itx; + lr_create_t *lr; + size_t namesize; + char name[24]; + + (void) sprintf(name, "ZOBJ_%llu", (u_longlong_t)object); + namesize = strlen(name) + 1; + + itx = zil_itx_create(TX_CREATE, sizeof (*lr) + namesize + + ztest_random(ZIL_MAX_BLKSZ)); + lr = (lr_create_t *)&itx->itx_lr; + bzero(lr + 1, lr->lr_common.lrc_reclen - sizeof (*lr)); + lr->lr_doid = object; + lr->lr_foid = 0; + lr->lr_mode = mode; + lr->lr_uid = 0; + lr->lr_gid = 0; + lr->lr_gen = dmu_tx_get_txg(tx); + lr->lr_crtime[0] = time(NULL); + lr->lr_crtime[1] = 0; + lr->lr_rdev = 0; + bcopy(name, (char *)(lr + 1), namesize); + + return (zil_itx_assign(zilog, itx, tx)); +} + +void +ztest_dmu_objset_create_destroy(ztest_args_t *za) +{ + int error; + objset_t *os, *os2; + char name[100]; + int basemode, expected_error; + zilog_t *zilog; + uint64_t seq; + uint64_t objects; + ztest_replay_t zr; + + (void) rw_rdlock(&ztest_shared->zs_name_lock); + (void) snprintf(name, 100, "%s/%s_temp_%llu", za->za_pool, za->za_pool, + (u_longlong_t)za->za_instance); + + basemode = DS_MODE_TYPE(za->za_instance); + if (basemode != DS_MODE_USER && basemode != DS_MODE_OWNER) + basemode = DS_MODE_USER; + + /* + * If this dataset exists from a previous run, process its replay log + * half of the time. If we don't replay it, then dmu_objset_destroy() + * (invoked from ztest_destroy_cb() below) should just throw it away. + */ + if (ztest_random(2) == 0 && + dmu_objset_open(name, DMU_OST_OTHER, DS_MODE_OWNER, &os) == 0) { + zr.zr_os = os; + zil_replay(os, &zr, &zr.zr_assign, ztest_replay_vector, NULL); + dmu_objset_close(os); + } + + /* + * There may be an old instance of the dataset we're about to + * create lying around from a previous run. If so, destroy it + * and all of its snapshots. + */ + (void) dmu_objset_find(name, ztest_destroy_cb, za, + DS_FIND_CHILDREN | DS_FIND_SNAPSHOTS); + + /* + * Verify that the destroyed dataset is no longer in the namespace. + */ + error = dmu_objset_open(name, DMU_OST_OTHER, basemode, &os); + if (error != ENOENT) + fatal(1, "dmu_objset_open(%s) found destroyed dataset %p", + name, os); + + /* + * Verify that we can create a new dataset. + */ + error = dmu_objset_create(name, DMU_OST_OTHER, NULL, 0, + ztest_create_cb, NULL); + if (error) { + if (error == ENOSPC) { + ztest_record_enospc("dmu_objset_create"); + (void) rw_unlock(&ztest_shared->zs_name_lock); + return; + } + fatal(0, "dmu_objset_create(%s) = %d", name, error); + } + + error = dmu_objset_open(name, DMU_OST_OTHER, basemode, &os); + if (error) { + fatal(0, "dmu_objset_open(%s) = %d", name, error); + } + + /* + * Open the intent log for it. + */ + zilog = zil_open(os, NULL); + + /* + * Put a random number of objects in there. + */ + objects = ztest_random(20); + seq = 0; + while (objects-- != 0) { + uint64_t object; + dmu_tx_t *tx = dmu_tx_create(os); + dmu_tx_hold_write(tx, DMU_NEW_OBJECT, 0, sizeof (name)); + error = dmu_tx_assign(tx, TXG_WAIT); + if (error) { + dmu_tx_abort(tx); + } else { + object = dmu_object_alloc(os, DMU_OT_UINT64_OTHER, 0, + DMU_OT_NONE, 0, tx); + ztest_set_random_blocksize(os, object, tx); + seq = ztest_log_create(zilog, tx, object, + DMU_OT_UINT64_OTHER); + dmu_write(os, object, 0, sizeof (name), name, tx); + dmu_tx_commit(tx); + } + if (ztest_random(5) == 0) { + zil_commit(zilog, seq, object); + } + if (ztest_random(100) == 0) { + error = zil_suspend(zilog); + if (error == 0) { + zil_resume(zilog); + } + } + } + + /* + * Verify that we cannot create an existing dataset. + */ + error = dmu_objset_create(name, DMU_OST_OTHER, NULL, 0, NULL, NULL); + if (error != EEXIST) + fatal(0, "created existing dataset, error = %d", error); + + /* + * Verify that multiple dataset holds are allowed, but only when + * the new access mode is compatible with the base mode. + */ + if (basemode == DS_MODE_OWNER) { + error = dmu_objset_open(name, DMU_OST_OTHER, DS_MODE_USER, + &os2); + if (error) + fatal(0, "dmu_objset_open('%s') = %d", name, error); + else + dmu_objset_close(os2); + } + error = dmu_objset_open(name, DMU_OST_OTHER, DS_MODE_OWNER, &os2); + expected_error = (basemode == DS_MODE_OWNER) ? EBUSY : 0; + if (error != expected_error) + fatal(0, "dmu_objset_open('%s') = %d, expected %d", + name, error, expected_error); + if (error == 0) + dmu_objset_close(os2); + + zil_close(zilog); + dmu_objset_close(os); + + error = dmu_objset_destroy(name); + if (error) + fatal(0, "dmu_objset_destroy(%s) = %d", name, error); + + (void) rw_unlock(&ztest_shared->zs_name_lock); +} + +/* + * Verify that dmu_snapshot_{create,destroy,open,close} work as expected. + */ +void +ztest_dmu_snapshot_create_destroy(ztest_args_t *za) +{ + int error; + objset_t *os = za->za_os; + char snapname[100]; + char osname[MAXNAMELEN]; + + (void) rw_rdlock(&ztest_shared->zs_name_lock); + dmu_objset_name(os, osname); + (void) snprintf(snapname, 100, "%s@%llu", osname, + (u_longlong_t)za->za_instance); + + error = dmu_objset_destroy(snapname); + if (error != 0 && error != ENOENT) + fatal(0, "dmu_objset_destroy() = %d", error); + error = dmu_objset_snapshot(osname, strchr(snapname, '@')+1, FALSE); + if (error == ENOSPC) + ztest_record_enospc("dmu_take_snapshot"); + else if (error != 0 && error != EEXIST) + fatal(0, "dmu_take_snapshot() = %d", error); + (void) rw_unlock(&ztest_shared->zs_name_lock); +} + +/* + * Verify that dmu_object_{alloc,free} work as expected. + */ +void +ztest_dmu_object_alloc_free(ztest_args_t *za) +{ + objset_t *os = za->za_os; + dmu_buf_t *db; + dmu_tx_t *tx; + uint64_t batchobj, object, batchsize, endoff, temp; + int b, c, error, bonuslen; + dmu_object_info_t *doi = &za->za_doi; + char osname[MAXNAMELEN]; + + dmu_objset_name(os, osname); + + endoff = -8ULL; + batchsize = 2; + + /* + * Create a batch object if necessary, and record it in the directory. + */ + VERIFY3U(0, ==, dmu_read(os, ZTEST_DIROBJ, za->za_diroff, + sizeof (uint64_t), &batchobj)); + if (batchobj == 0) { + tx = dmu_tx_create(os); + dmu_tx_hold_write(tx, ZTEST_DIROBJ, za->za_diroff, + sizeof (uint64_t)); + dmu_tx_hold_bonus(tx, DMU_NEW_OBJECT); + error = dmu_tx_assign(tx, TXG_WAIT); + if (error) { + ztest_record_enospc("create a batch object"); + dmu_tx_abort(tx); + return; + } + batchobj = dmu_object_alloc(os, DMU_OT_UINT64_OTHER, 0, + DMU_OT_NONE, 0, tx); + ztest_set_random_blocksize(os, batchobj, tx); + dmu_write(os, ZTEST_DIROBJ, za->za_diroff, + sizeof (uint64_t), &batchobj, tx); + dmu_tx_commit(tx); + } + + /* + * Destroy the previous batch of objects. + */ + for (b = 0; b < batchsize; b++) { + VERIFY3U(0, ==, dmu_read(os, batchobj, b * sizeof (uint64_t), + sizeof (uint64_t), &object)); + if (object == 0) + continue; + /* + * Read and validate contents. + * We expect the nth byte of the bonus buffer to be n. + */ + VERIFY(0 == dmu_bonus_hold(os, object, FTAG, &db)); + za->za_dbuf = db; + + dmu_object_info_from_db(db, doi); + ASSERT(doi->doi_type == DMU_OT_UINT64_OTHER); + ASSERT(doi->doi_bonus_type == DMU_OT_PLAIN_OTHER); + ASSERT3S(doi->doi_physical_blks, >=, 0); + + bonuslen = doi->doi_bonus_size; + + for (c = 0; c < bonuslen; c++) { + if (((uint8_t *)db->db_data)[c] != + (uint8_t)(c + bonuslen)) { + fatal(0, + "bad bonus: %s, obj %llu, off %d: %u != %u", + osname, object, c, + ((uint8_t *)db->db_data)[c], + (uint8_t)(c + bonuslen)); + } + } + + dmu_buf_rele(db, FTAG); + za->za_dbuf = NULL; + + /* + * We expect the word at endoff to be our object number. + */ + VERIFY(0 == dmu_read(os, object, endoff, + sizeof (uint64_t), &temp)); + + if (temp != object) { + fatal(0, "bad data in %s, got %llu, expected %llu", + osname, temp, object); + } + + /* + * Destroy old object and clear batch entry. + */ + tx = dmu_tx_create(os); + dmu_tx_hold_write(tx, batchobj, + b * sizeof (uint64_t), sizeof (uint64_t)); + dmu_tx_hold_free(tx, object, 0, DMU_OBJECT_END); + error = dmu_tx_assign(tx, TXG_WAIT); + if (error) { + ztest_record_enospc("free object"); + dmu_tx_abort(tx); + return; + } + error = dmu_object_free(os, object, tx); + if (error) { + fatal(0, "dmu_object_free('%s', %llu) = %d", + osname, object, error); + } + object = 0; + + dmu_object_set_checksum(os, batchobj, + ztest_random_checksum(), tx); + dmu_object_set_compress(os, batchobj, + ztest_random_compress(), tx); + + dmu_write(os, batchobj, b * sizeof (uint64_t), + sizeof (uint64_t), &object, tx); + + dmu_tx_commit(tx); + } + + /* + * Before creating the new batch of objects, generate a bunch of churn. + */ + for (b = ztest_random(100); b > 0; b--) { + tx = dmu_tx_create(os); + dmu_tx_hold_bonus(tx, DMU_NEW_OBJECT); + error = dmu_tx_assign(tx, TXG_WAIT); + if (error) { + ztest_record_enospc("churn objects"); + dmu_tx_abort(tx); + return; + } + object = dmu_object_alloc(os, DMU_OT_UINT64_OTHER, 0, + DMU_OT_NONE, 0, tx); + ztest_set_random_blocksize(os, object, tx); + error = dmu_object_free(os, object, tx); + if (error) { + fatal(0, "dmu_object_free('%s', %llu) = %d", + osname, object, error); + } + dmu_tx_commit(tx); + } + + /* + * Create a new batch of objects with randomly chosen + * blocksizes and record them in the batch directory. + */ + for (b = 0; b < batchsize; b++) { + uint32_t va_blksize; + u_longlong_t va_nblocks; + + tx = dmu_tx_create(os); + dmu_tx_hold_write(tx, batchobj, b * sizeof (uint64_t), + sizeof (uint64_t)); + dmu_tx_hold_bonus(tx, DMU_NEW_OBJECT); + dmu_tx_hold_write(tx, DMU_NEW_OBJECT, endoff, + sizeof (uint64_t)); + error = dmu_tx_assign(tx, TXG_WAIT); + if (error) { + ztest_record_enospc("create batchobj"); + dmu_tx_abort(tx); + return; + } + bonuslen = (int)ztest_random(dmu_bonus_max()) + 1; + + object = dmu_object_alloc(os, DMU_OT_UINT64_OTHER, 0, + DMU_OT_PLAIN_OTHER, bonuslen, tx); + + ztest_set_random_blocksize(os, object, tx); + + dmu_object_set_checksum(os, object, + ztest_random_checksum(), tx); + dmu_object_set_compress(os, object, + ztest_random_compress(), tx); + + dmu_write(os, batchobj, b * sizeof (uint64_t), + sizeof (uint64_t), &object, tx); + + /* + * Write to both the bonus buffer and the regular data. + */ + VERIFY(dmu_bonus_hold(os, object, FTAG, &db) == 0); + za->za_dbuf = db; + ASSERT3U(bonuslen, <=, db->db_size); + + dmu_object_size_from_db(db, &va_blksize, &va_nblocks); + ASSERT3S(va_nblocks, >=, 0); + + dmu_buf_will_dirty(db, tx); + + /* + * See comments above regarding the contents of + * the bonus buffer and the word at endoff. + */ + for (c = 0; c < bonuslen; c++) + ((uint8_t *)db->db_data)[c] = (uint8_t)(c + bonuslen); + + dmu_buf_rele(db, FTAG); + za->za_dbuf = NULL; + + /* + * Write to a large offset to increase indirection. + */ + dmu_write(os, object, endoff, sizeof (uint64_t), &object, tx); + + dmu_tx_commit(tx); + } +} + +/* + * Verify that dmu_{read,write} work as expected. + */ +typedef struct bufwad { + uint64_t bw_index; + uint64_t bw_txg; + uint64_t bw_data; +} bufwad_t; + +typedef struct dmu_read_write_dir { + uint64_t dd_packobj; + uint64_t dd_bigobj; + uint64_t dd_chunk; +} dmu_read_write_dir_t; + +void +ztest_dmu_read_write(ztest_args_t *za) +{ + objset_t *os = za->za_os; + dmu_read_write_dir_t dd; + dmu_tx_t *tx; + int i, freeit, error; + uint64_t n, s, txg; + bufwad_t *packbuf, *bigbuf, *pack, *bigH, *bigT; + uint64_t packoff, packsize, bigoff, bigsize; + uint64_t regions = 997; + uint64_t stride = 123456789ULL; + uint64_t width = 40; + int free_percent = 5; + + /* + * This test uses two objects, packobj and bigobj, that are always + * updated together (i.e. in the same tx) so that their contents are + * in sync and can be compared. Their contents relate to each other + * in a simple way: packobj is a dense array of 'bufwad' structures, + * while bigobj is a sparse array of the same bufwads. Specifically, + * for any index n, there are three bufwads that should be identical: + * + * packobj, at offset n * sizeof (bufwad_t) + * bigobj, at the head of the nth chunk + * bigobj, at the tail of the nth chunk + * + * The chunk size is arbitrary. It doesn't have to be a power of two, + * and it doesn't have any relation to the object blocksize. + * The only requirement is that it can hold at least two bufwads. + * + * Normally, we write the bufwad to each of these locations. + * However, free_percent of the time we instead write zeroes to + * packobj and perform a dmu_free_range() on bigobj. By comparing + * bigobj to packobj, we can verify that the DMU is correctly + * tracking which parts of an object are allocated and free, + * and that the contents of the allocated blocks are correct. + */ + + /* + * Read the directory info. If it's the first time, set things up. + */ + VERIFY(0 == dmu_read(os, ZTEST_DIROBJ, za->za_diroff, + sizeof (dd), &dd)); + if (dd.dd_chunk == 0) { + ASSERT(dd.dd_packobj == 0); + ASSERT(dd.dd_bigobj == 0); + tx = dmu_tx_create(os); + dmu_tx_hold_write(tx, ZTEST_DIROBJ, za->za_diroff, sizeof (dd)); + dmu_tx_hold_bonus(tx, DMU_NEW_OBJECT); + error = dmu_tx_assign(tx, TXG_WAIT); + if (error) { + ztest_record_enospc("create r/w directory"); + dmu_tx_abort(tx); + return; + } + + dd.dd_packobj = dmu_object_alloc(os, DMU_OT_UINT64_OTHER, 0, + DMU_OT_NONE, 0, tx); + dd.dd_bigobj = dmu_object_alloc(os, DMU_OT_UINT64_OTHER, 0, + DMU_OT_NONE, 0, tx); + dd.dd_chunk = (1000 + ztest_random(1000)) * sizeof (uint64_t); + + ztest_set_random_blocksize(os, dd.dd_packobj, tx); + ztest_set_random_blocksize(os, dd.dd_bigobj, tx); + + dmu_write(os, ZTEST_DIROBJ, za->za_diroff, sizeof (dd), &dd, + tx); + dmu_tx_commit(tx); + } + + /* + * Prefetch a random chunk of the big object. + * Our aim here is to get some async reads in flight + * for blocks that we may free below; the DMU should + * handle this race correctly. + */ + n = ztest_random(regions) * stride + ztest_random(width); + s = 1 + ztest_random(2 * width - 1); + dmu_prefetch(os, dd.dd_bigobj, n * dd.dd_chunk, s * dd.dd_chunk); + + /* + * Pick a random index and compute the offsets into packobj and bigobj. + */ + n = ztest_random(regions) * stride + ztest_random(width); + s = 1 + ztest_random(width - 1); + + packoff = n * sizeof (bufwad_t); + packsize = s * sizeof (bufwad_t); + + bigoff = n * dd.dd_chunk; + bigsize = s * dd.dd_chunk; + + packbuf = umem_alloc(packsize, UMEM_NOFAIL); + bigbuf = umem_alloc(bigsize, UMEM_NOFAIL); + + /* + * free_percent of the time, free a range of bigobj rather than + * overwriting it. + */ + freeit = (ztest_random(100) < free_percent); + + /* + * Read the current contents of our objects. + */ + error = dmu_read(os, dd.dd_packobj, packoff, packsize, packbuf); + ASSERT3U(error, ==, 0); + error = dmu_read(os, dd.dd_bigobj, bigoff, bigsize, bigbuf); + ASSERT3U(error, ==, 0); + + /* + * Get a tx for the mods to both packobj and bigobj. + */ + tx = dmu_tx_create(os); + + dmu_tx_hold_write(tx, dd.dd_packobj, packoff, packsize); + + if (freeit) + dmu_tx_hold_free(tx, dd.dd_bigobj, bigoff, bigsize); + else + dmu_tx_hold_write(tx, dd.dd_bigobj, bigoff, bigsize); + + error = dmu_tx_assign(tx, TXG_WAIT); + + if (error) { + ztest_record_enospc("dmu r/w range"); + dmu_tx_abort(tx); + umem_free(packbuf, packsize); + umem_free(bigbuf, bigsize); + return; + } + + txg = dmu_tx_get_txg(tx); + + /* + * For each index from n to n + s, verify that the existing bufwad + * in packobj matches the bufwads at the head and tail of the + * corresponding chunk in bigobj. Then update all three bufwads + * with the new values we want to write out. + */ + for (i = 0; i < s; i++) { + /* LINTED */ + pack = (bufwad_t *)((char *)packbuf + i * sizeof (bufwad_t)); + /* LINTED */ + bigH = (bufwad_t *)((char *)bigbuf + i * dd.dd_chunk); + /* LINTED */ + bigT = (bufwad_t *)((char *)bigH + dd.dd_chunk) - 1; + + ASSERT((uintptr_t)bigH - (uintptr_t)bigbuf < bigsize); + ASSERT((uintptr_t)bigT - (uintptr_t)bigbuf < bigsize); + + if (pack->bw_txg > txg) + fatal(0, "future leak: got %llx, open txg is %llx", + pack->bw_txg, txg); + + if (pack->bw_data != 0 && pack->bw_index != n + i) + fatal(0, "wrong index: got %llx, wanted %llx+%llx", + pack->bw_index, n, i); + + if (bcmp(pack, bigH, sizeof (bufwad_t)) != 0) + fatal(0, "pack/bigH mismatch in %p/%p", pack, bigH); + + if (bcmp(pack, bigT, sizeof (bufwad_t)) != 0) + fatal(0, "pack/bigT mismatch in %p/%p", pack, bigT); + + if (freeit) { + bzero(pack, sizeof (bufwad_t)); + } else { + pack->bw_index = n + i; + pack->bw_txg = txg; + pack->bw_data = 1 + ztest_random(-2ULL); + } + *bigH = *pack; + *bigT = *pack; + } + + /* + * We've verified all the old bufwads, and made new ones. + * Now write them out. + */ + dmu_write(os, dd.dd_packobj, packoff, packsize, packbuf, tx); + + if (freeit) { + if (zopt_verbose >= 6) { + (void) printf("freeing offset %llx size %llx" + " txg %llx\n", + (u_longlong_t)bigoff, + (u_longlong_t)bigsize, + (u_longlong_t)txg); + } + VERIFY(0 == dmu_free_range(os, dd.dd_bigobj, bigoff, + bigsize, tx)); + } else { + if (zopt_verbose >= 6) { + (void) printf("writing offset %llx size %llx" + " txg %llx\n", + (u_longlong_t)bigoff, + (u_longlong_t)bigsize, + (u_longlong_t)txg); + } + dmu_write(os, dd.dd_bigobj, bigoff, bigsize, bigbuf, tx); + } + + dmu_tx_commit(tx); + + /* + * Sanity check the stuff we just wrote. + */ + { + void *packcheck = umem_alloc(packsize, UMEM_NOFAIL); + void *bigcheck = umem_alloc(bigsize, UMEM_NOFAIL); + + VERIFY(0 == dmu_read(os, dd.dd_packobj, packoff, + packsize, packcheck)); + VERIFY(0 == dmu_read(os, dd.dd_bigobj, bigoff, + bigsize, bigcheck)); + + ASSERT(bcmp(packbuf, packcheck, packsize) == 0); + ASSERT(bcmp(bigbuf, bigcheck, bigsize) == 0); + + umem_free(packcheck, packsize); + umem_free(bigcheck, bigsize); + } + + umem_free(packbuf, packsize); + umem_free(bigbuf, bigsize); +} + +void +ztest_dmu_check_future_leak(ztest_args_t *za) +{ + objset_t *os = za->za_os; + dmu_buf_t *db; + ztest_block_tag_t *bt; + dmu_object_info_t *doi = &za->za_doi; + + /* + * Make sure that, if there is a write record in the bonus buffer + * of the ZTEST_DIROBJ, that the txg for this record is <= the + * last synced txg of the pool. + */ + VERIFY(dmu_bonus_hold(os, ZTEST_DIROBJ, FTAG, &db) == 0); + za->za_dbuf = db; + VERIFY(dmu_object_info(os, ZTEST_DIROBJ, doi) == 0); + ASSERT3U(doi->doi_bonus_size, >=, sizeof (*bt)); + ASSERT3U(doi->doi_bonus_size, <=, db->db_size); + ASSERT3U(doi->doi_bonus_size % sizeof (*bt), ==, 0); + bt = (void *)((char *)db->db_data + doi->doi_bonus_size - sizeof (*bt)); + if (bt->bt_objset != 0) { + ASSERT3U(bt->bt_objset, ==, dmu_objset_id(os)); + ASSERT3U(bt->bt_object, ==, ZTEST_DIROBJ); + ASSERT3U(bt->bt_offset, ==, -1ULL); + ASSERT3U(bt->bt_txg, <, spa_first_txg(za->za_spa)); + } + dmu_buf_rele(db, FTAG); + za->za_dbuf = NULL; +} + +void +ztest_dmu_write_parallel(ztest_args_t *za) +{ + objset_t *os = za->za_os; + ztest_block_tag_t *rbt = &za->za_rbt; + ztest_block_tag_t *wbt = &za->za_wbt; + const size_t btsize = sizeof (ztest_block_tag_t); + dmu_buf_t *db; + int b, error; + int bs = ZTEST_DIROBJ_BLOCKSIZE; + int do_free = 0; + uint64_t off, txg, txg_how; + mutex_t *lp; + char osname[MAXNAMELEN]; + char iobuf[SPA_MAXBLOCKSIZE]; + blkptr_t blk = { 0 }; + uint64_t blkoff; + zbookmark_t zb; + dmu_tx_t *tx = dmu_tx_create(os); + + dmu_objset_name(os, osname); + + /* + * Have multiple threads write to large offsets in ZTEST_DIROBJ + * to verify that having multiple threads writing to the same object + * in parallel doesn't cause any trouble. + */ + if (ztest_random(4) == 0) { + /* + * Do the bonus buffer instead of a regular block. + * We need a lock to serialize resize vs. others, + * so we hash on the objset ID. + */ + b = dmu_objset_id(os) % ZTEST_SYNC_LOCKS; + off = -1ULL; + dmu_tx_hold_bonus(tx, ZTEST_DIROBJ); + } else { + b = ztest_random(ZTEST_SYNC_LOCKS); + off = za->za_diroff_shared + (b << SPA_MAXBLOCKSHIFT); + if (ztest_random(4) == 0) { + do_free = 1; + dmu_tx_hold_free(tx, ZTEST_DIROBJ, off, bs); + } else { + dmu_tx_hold_write(tx, ZTEST_DIROBJ, off, bs); + } + } + + txg_how = ztest_random(2) == 0 ? TXG_WAIT : TXG_NOWAIT; + error = dmu_tx_assign(tx, txg_how); + if (error) { + if (error == ERESTART) { + ASSERT(txg_how == TXG_NOWAIT); + dmu_tx_wait(tx); + } else { + ztest_record_enospc("dmu write parallel"); + } + dmu_tx_abort(tx); + return; + } + txg = dmu_tx_get_txg(tx); + + lp = &ztest_shared->zs_sync_lock[b]; + (void) mutex_lock(lp); + + wbt->bt_objset = dmu_objset_id(os); + wbt->bt_object = ZTEST_DIROBJ; + wbt->bt_offset = off; + wbt->bt_txg = txg; + wbt->bt_thread = za->za_instance; + wbt->bt_seq = ztest_shared->zs_seq[b]++; /* protected by lp */ + + /* + * Occasionally, write an all-zero block to test the behavior + * of blocks that compress into holes. + */ + if (off != -1ULL && ztest_random(8) == 0) + bzero(wbt, btsize); + + if (off == -1ULL) { + dmu_object_info_t *doi = &za->za_doi; + char *dboff; + + VERIFY(dmu_bonus_hold(os, ZTEST_DIROBJ, FTAG, &db) == 0); + za->za_dbuf = db; + dmu_object_info_from_db(db, doi); + ASSERT3U(doi->doi_bonus_size, <=, db->db_size); + ASSERT3U(doi->doi_bonus_size, >=, btsize); + ASSERT3U(doi->doi_bonus_size % btsize, ==, 0); + dboff = (char *)db->db_data + doi->doi_bonus_size - btsize; + bcopy(dboff, rbt, btsize); + if (rbt->bt_objset != 0) { + ASSERT3U(rbt->bt_objset, ==, wbt->bt_objset); + ASSERT3U(rbt->bt_object, ==, wbt->bt_object); + ASSERT3U(rbt->bt_offset, ==, wbt->bt_offset); + ASSERT3U(rbt->bt_txg, <=, wbt->bt_txg); + } + if (ztest_random(10) == 0) { + int newsize = (ztest_random(db->db_size / + btsize) + 1) * btsize; + + ASSERT3U(newsize, >=, btsize); + ASSERT3U(newsize, <=, db->db_size); + VERIFY3U(dmu_set_bonus(db, newsize, tx), ==, 0); + dboff = (char *)db->db_data + newsize - btsize; + } + dmu_buf_will_dirty(db, tx); + bcopy(wbt, dboff, btsize); + dmu_buf_rele(db, FTAG); + za->za_dbuf = NULL; + } else if (do_free) { + VERIFY(dmu_free_range(os, ZTEST_DIROBJ, off, bs, tx) == 0); + } else { + dmu_write(os, ZTEST_DIROBJ, off, btsize, wbt, tx); + } + + (void) mutex_unlock(lp); + + if (ztest_random(1000) == 0) + (void) poll(NULL, 0, 1); /* open dn_notxholds window */ + + dmu_tx_commit(tx); + + if (ztest_random(10000) == 0) + txg_wait_synced(dmu_objset_pool(os), txg); + + if (off == -1ULL || do_free) + return; + + if (ztest_random(2) != 0) + return; + + /* + * dmu_sync() the block we just wrote. + */ + (void) mutex_lock(lp); + + blkoff = P2ALIGN_TYPED(off, bs, uint64_t); + error = dmu_buf_hold(os, ZTEST_DIROBJ, blkoff, FTAG, &db); + za->za_dbuf = db; + if (error) { + dprintf("dmu_buf_hold(%s, %d, %llx) = %d\n", + osname, ZTEST_DIROBJ, blkoff, error); + (void) mutex_unlock(lp); + return; + } + blkoff = off - blkoff; + error = dmu_sync(NULL, db, &blk, txg, NULL, NULL); + dmu_buf_rele(db, FTAG); + za->za_dbuf = NULL; + + (void) mutex_unlock(lp); + + if (error) { + dprintf("dmu_sync(%s, %d, %llx) = %d\n", + osname, ZTEST_DIROBJ, off, error); + return; + } + + if (blk.blk_birth == 0) /* concurrent free */ + return; + + txg_suspend(dmu_objset_pool(os)); + + ASSERT(blk.blk_fill == 1); + ASSERT3U(BP_GET_TYPE(&blk), ==, DMU_OT_UINT64_OTHER); + ASSERT3U(BP_GET_LEVEL(&blk), ==, 0); + ASSERT3U(BP_GET_LSIZE(&blk), ==, bs); + + /* + * Read the block that dmu_sync() returned to make sure its contents + * match what we wrote. We do this while still txg_suspend()ed + * to ensure that the block can't be reused before we read it. + */ + zb.zb_objset = dmu_objset_id(os); + zb.zb_object = ZTEST_DIROBJ; + zb.zb_level = 0; + zb.zb_blkid = off / bs; + error = zio_wait(zio_read(NULL, za->za_spa, &blk, iobuf, bs, + NULL, NULL, ZIO_PRIORITY_SYNC_READ, ZIO_FLAG_MUSTSUCCEED, &zb)); + ASSERT3U(error, ==, 0); + + txg_resume(dmu_objset_pool(os)); + + bcopy(&iobuf[blkoff], rbt, btsize); + + if (rbt->bt_objset == 0) /* concurrent free */ + return; + + if (wbt->bt_objset == 0) /* all-zero overwrite */ + return; + + ASSERT3U(rbt->bt_objset, ==, wbt->bt_objset); + ASSERT3U(rbt->bt_object, ==, wbt->bt_object); + ASSERT3U(rbt->bt_offset, ==, wbt->bt_offset); + + /* + * The semantic of dmu_sync() is that we always push the most recent + * version of the data, so in the face of concurrent updates we may + * see a newer version of the block. That's OK. + */ + ASSERT3U(rbt->bt_txg, >=, wbt->bt_txg); + if (rbt->bt_thread == wbt->bt_thread) + ASSERT3U(rbt->bt_seq, ==, wbt->bt_seq); + else + ASSERT3U(rbt->bt_seq, >, wbt->bt_seq); +} + +/* + * Verify that zap_{create,destroy,add,remove,update} work as expected. + */ +#define ZTEST_ZAP_MIN_INTS 1 +#define ZTEST_ZAP_MAX_INTS 4 +#define ZTEST_ZAP_MAX_PROPS 1000 + +void +ztest_zap(ztest_args_t *za) +{ + objset_t *os = za->za_os; + uint64_t object; + uint64_t txg, last_txg; + uint64_t value[ZTEST_ZAP_MAX_INTS]; + uint64_t zl_ints, zl_intsize, prop; + int i, ints; + dmu_tx_t *tx; + char propname[100], txgname[100]; + int error; + char osname[MAXNAMELEN]; + char *hc[2] = { "s.acl.h", ".s.open.h.hyLZlg" }; + + dmu_objset_name(os, osname); + + /* + * Create a new object if necessary, and record it in the directory. + */ + VERIFY(0 == dmu_read(os, ZTEST_DIROBJ, za->za_diroff, + sizeof (uint64_t), &object)); + + if (object == 0) { + tx = dmu_tx_create(os); + dmu_tx_hold_write(tx, ZTEST_DIROBJ, za->za_diroff, + sizeof (uint64_t)); + dmu_tx_hold_zap(tx, DMU_NEW_OBJECT, TRUE, NULL); + error = dmu_tx_assign(tx, TXG_WAIT); + if (error) { + ztest_record_enospc("create zap test obj"); + dmu_tx_abort(tx); + return; + } + object = zap_create(os, DMU_OT_ZAP_OTHER, DMU_OT_NONE, 0, tx); + if (error) { + fatal(0, "zap_create('%s', %llu) = %d", + osname, object, error); + } + ASSERT(object != 0); + dmu_write(os, ZTEST_DIROBJ, za->za_diroff, + sizeof (uint64_t), &object, tx); + /* + * Generate a known hash collision, and verify that + * we can lookup and remove both entries. + */ + for (i = 0; i < 2; i++) { + value[i] = i; + error = zap_add(os, object, hc[i], sizeof (uint64_t), + 1, &value[i], tx); + ASSERT3U(error, ==, 0); + } + for (i = 0; i < 2; i++) { + error = zap_add(os, object, hc[i], sizeof (uint64_t), + 1, &value[i], tx); + ASSERT3U(error, ==, EEXIST); + error = zap_length(os, object, hc[i], + &zl_intsize, &zl_ints); + ASSERT3U(error, ==, 0); + ASSERT3U(zl_intsize, ==, sizeof (uint64_t)); + ASSERT3U(zl_ints, ==, 1); + } + for (i = 0; i < 2; i++) { + error = zap_remove(os, object, hc[i], tx); + ASSERT3U(error, ==, 0); + } + + dmu_tx_commit(tx); + } + + ints = MAX(ZTEST_ZAP_MIN_INTS, object % ZTEST_ZAP_MAX_INTS); + + prop = ztest_random(ZTEST_ZAP_MAX_PROPS); + (void) sprintf(propname, "prop_%llu", (u_longlong_t)prop); + (void) sprintf(txgname, "txg_%llu", (u_longlong_t)prop); + bzero(value, sizeof (value)); + last_txg = 0; + + /* + * If these zap entries already exist, validate their contents. + */ + error = zap_length(os, object, txgname, &zl_intsize, &zl_ints); + if (error == 0) { + ASSERT3U(zl_intsize, ==, sizeof (uint64_t)); + ASSERT3U(zl_ints, ==, 1); + + VERIFY(zap_lookup(os, object, txgname, zl_intsize, + zl_ints, &last_txg) == 0); + + VERIFY(zap_length(os, object, propname, &zl_intsize, + &zl_ints) == 0); + + ASSERT3U(zl_intsize, ==, sizeof (uint64_t)); + ASSERT3U(zl_ints, ==, ints); + + VERIFY(zap_lookup(os, object, propname, zl_intsize, + zl_ints, value) == 0); + + for (i = 0; i < ints; i++) { + ASSERT3U(value[i], ==, last_txg + object + i); + } + } else { + ASSERT3U(error, ==, ENOENT); + } + + /* + * Atomically update two entries in our zap object. + * The first is named txg_%llu, and contains the txg + * in which the property was last updated. The second + * is named prop_%llu, and the nth element of its value + * should be txg + object + n. + */ + tx = dmu_tx_create(os); + dmu_tx_hold_zap(tx, object, TRUE, NULL); + error = dmu_tx_assign(tx, TXG_WAIT); + if (error) { + ztest_record_enospc("create zap entry"); + dmu_tx_abort(tx); + return; + } + txg = dmu_tx_get_txg(tx); + + if (last_txg > txg) + fatal(0, "zap future leak: old %llu new %llu", last_txg, txg); + + for (i = 0; i < ints; i++) + value[i] = txg + object + i; + + error = zap_update(os, object, txgname, sizeof (uint64_t), 1, &txg, tx); + if (error) + fatal(0, "zap_update('%s', %llu, '%s') = %d", + osname, object, txgname, error); + + error = zap_update(os, object, propname, sizeof (uint64_t), + ints, value, tx); + if (error) + fatal(0, "zap_update('%s', %llu, '%s') = %d", + osname, object, propname, error); + + dmu_tx_commit(tx); + + /* + * Remove a random pair of entries. + */ + prop = ztest_random(ZTEST_ZAP_MAX_PROPS); + (void) sprintf(propname, "prop_%llu", (u_longlong_t)prop); + (void) sprintf(txgname, "txg_%llu", (u_longlong_t)prop); + + error = zap_length(os, object, txgname, &zl_intsize, &zl_ints); + + if (error == ENOENT) + return; + + ASSERT3U(error, ==, 0); + + tx = dmu_tx_create(os); + dmu_tx_hold_zap(tx, object, TRUE, NULL); + error = dmu_tx_assign(tx, TXG_WAIT); + if (error) { + ztest_record_enospc("remove zap entry"); + dmu_tx_abort(tx); + return; + } + error = zap_remove(os, object, txgname, tx); + if (error) + fatal(0, "zap_remove('%s', %llu, '%s') = %d", + osname, object, txgname, error); + + error = zap_remove(os, object, propname, tx); + if (error) + fatal(0, "zap_remove('%s', %llu, '%s') = %d", + osname, object, propname, error); + + dmu_tx_commit(tx); + + /* + * Once in a while, destroy the object. + */ + if (ztest_random(1000) != 0) + return; + + tx = dmu_tx_create(os); + dmu_tx_hold_write(tx, ZTEST_DIROBJ, za->za_diroff, sizeof (uint64_t)); + dmu_tx_hold_free(tx, object, 0, DMU_OBJECT_END); + error = dmu_tx_assign(tx, TXG_WAIT); + if (error) { + ztest_record_enospc("destroy zap object"); + dmu_tx_abort(tx); + return; + } + error = zap_destroy(os, object, tx); + if (error) + fatal(0, "zap_destroy('%s', %llu) = %d", + osname, object, error); + object = 0; + dmu_write(os, ZTEST_DIROBJ, za->za_diroff, sizeof (uint64_t), + &object, tx); + dmu_tx_commit(tx); +} + +void +ztest_zap_parallel(ztest_args_t *za) +{ + objset_t *os = za->za_os; + uint64_t txg, object, count, wsize, wc, zl_wsize, zl_wc; + dmu_tx_t *tx; + int i, namelen, error; + char name[20], string_value[20]; + void *data; + + /* + * Generate a random name of the form 'xxx.....' where each + * x is a random printable character and the dots are dots. + * There are 94 such characters, and the name length goes from + * 6 to 20, so there are 94^3 * 15 = 12,458,760 possible names. + */ + namelen = ztest_random(sizeof (name) - 5) + 5 + 1; + + for (i = 0; i < 3; i++) + name[i] = '!' + ztest_random('~' - '!' + 1); + for (; i < namelen - 1; i++) + name[i] = '.'; + name[i] = '\0'; + + if (ztest_random(2) == 0) + object = ZTEST_MICROZAP_OBJ; + else + object = ZTEST_FATZAP_OBJ; + + if ((namelen & 1) || object == ZTEST_MICROZAP_OBJ) { + wsize = sizeof (txg); + wc = 1; + data = &txg; + } else { + wsize = 1; + wc = namelen; + data = string_value; + } + + count = -1ULL; + VERIFY(zap_count(os, object, &count) == 0); + ASSERT(count != -1ULL); + + /* + * Select an operation: length, lookup, add, update, remove. + */ + i = ztest_random(5); + + if (i >= 2) { + tx = dmu_tx_create(os); + dmu_tx_hold_zap(tx, object, TRUE, NULL); + error = dmu_tx_assign(tx, TXG_WAIT); + if (error) { + ztest_record_enospc("zap parallel"); + dmu_tx_abort(tx); + return; + } + txg = dmu_tx_get_txg(tx); + bcopy(name, string_value, namelen); + } else { + tx = NULL; + txg = 0; + bzero(string_value, namelen); + } + + switch (i) { + + case 0: + error = zap_length(os, object, name, &zl_wsize, &zl_wc); + if (error == 0) { + ASSERT3U(wsize, ==, zl_wsize); + ASSERT3U(wc, ==, zl_wc); + } else { + ASSERT3U(error, ==, ENOENT); + } + break; + + case 1: + error = zap_lookup(os, object, name, wsize, wc, data); + if (error == 0) { + if (data == string_value && + bcmp(name, data, namelen) != 0) + fatal(0, "name '%s' != val '%s' len %d", + name, data, namelen); + } else { + ASSERT3U(error, ==, ENOENT); + } + break; + + case 2: + error = zap_add(os, object, name, wsize, wc, data, tx); + ASSERT(error == 0 || error == EEXIST); + break; + + case 3: + VERIFY(zap_update(os, object, name, wsize, wc, data, tx) == 0); + break; + + case 4: + error = zap_remove(os, object, name, tx); + ASSERT(error == 0 || error == ENOENT); + break; + } + + if (tx != NULL) + dmu_tx_commit(tx); +} + +void +ztest_dsl_prop_get_set(ztest_args_t *za) +{ + objset_t *os = za->za_os; + int i, inherit; + uint64_t value; + const char *prop, *valname; + char setpoint[MAXPATHLEN]; + char osname[MAXNAMELEN]; + int error; + + (void) rw_rdlock(&ztest_shared->zs_name_lock); + + dmu_objset_name(os, osname); + + for (i = 0; i < 2; i++) { + if (i == 0) { + prop = "checksum"; + value = ztest_random_checksum(); + inherit = (value == ZIO_CHECKSUM_INHERIT); + } else { + prop = "compression"; + value = ztest_random_compress(); + inherit = (value == ZIO_COMPRESS_INHERIT); + } + + error = dsl_prop_set(osname, prop, sizeof (value), + !inherit, &value); + + if (error == ENOSPC) { + ztest_record_enospc("dsl_prop_set"); + break; + } + + ASSERT3U(error, ==, 0); + + VERIFY3U(dsl_prop_get(osname, prop, sizeof (value), + 1, &value, setpoint), ==, 0); + + if (i == 0) + valname = zio_checksum_table[value].ci_name; + else + valname = zio_compress_table[value].ci_name; + + if (zopt_verbose >= 6) { + (void) printf("%s %s = %s for '%s'\n", + osname, prop, valname, setpoint); + } + } + + (void) rw_unlock(&ztest_shared->zs_name_lock); +} + +/* + * Inject random faults into the on-disk data. + */ +void +ztest_fault_inject(ztest_args_t *za) +{ + int fd; + uint64_t offset; + uint64_t leaves = MAX(zopt_mirrors, 1) * zopt_raidz; + uint64_t bad = 0x1990c0ffeedecade; + uint64_t top, leaf; + char path0[MAXPATHLEN]; + char pathrand[MAXPATHLEN]; + size_t fsize; + spa_t *spa = za->za_spa; + int bshift = SPA_MAXBLOCKSHIFT + 2; /* don't scrog all labels */ + int iters = 1000; + int maxfaults = zopt_maxfaults; + vdev_t *vd0 = NULL; + uint64_t guid0 = 0; + + ASSERT(leaves >= 1); + + /* + * We need SCL_STATE here because we're going to look at vd0->vdev_tsd. + */ + spa_config_enter(spa, SCL_STATE, FTAG, RW_READER); + + if (ztest_random(2) == 0) { + /* + * Inject errors on a normal data device. + */ + top = ztest_random(spa->spa_root_vdev->vdev_children); + leaf = ztest_random(leaves); + + /* + * Generate paths to the first leaf in this top-level vdev, + * and to the random leaf we selected. We'll induce transient + * write failures and random online/offline activity on leaf 0, + * and we'll write random garbage to the randomly chosen leaf. + */ + (void) snprintf(path0, sizeof (path0), ztest_dev_template, + zopt_dir, zopt_pool, top * leaves + 0); + (void) snprintf(pathrand, sizeof (pathrand), ztest_dev_template, + zopt_dir, zopt_pool, top * leaves + leaf); + + vd0 = vdev_lookup_by_path(spa->spa_root_vdev, path0); + if (vd0 != NULL && maxfaults != 1) { + /* + * Make vd0 explicitly claim to be unreadable, + * or unwriteable, or reach behind its back + * and close the underlying fd. We can do this if + * maxfaults == 0 because we'll fail and reexecute, + * and we can do it if maxfaults >= 2 because we'll + * have enough redundancy. If maxfaults == 1, the + * combination of this with injection of random data + * corruption below exceeds the pool's fault tolerance. + */ + vdev_file_t *vf = vd0->vdev_tsd; + + if (vf != NULL && ztest_random(3) == 0) { + (void) close(vf->vf_vnode->v_fd); + vf->vf_vnode->v_fd = -1; + } else if (ztest_random(2) == 0) { + vd0->vdev_cant_read = B_TRUE; + } else { + vd0->vdev_cant_write = B_TRUE; + } + guid0 = vd0->vdev_guid; + } + } else { + /* + * Inject errors on an l2cache device. + */ + spa_aux_vdev_t *sav = &spa->spa_l2cache; + + if (sav->sav_count == 0) { + spa_config_exit(spa, SCL_STATE, FTAG); + return; + } + vd0 = sav->sav_vdevs[ztest_random(sav->sav_count)]; + guid0 = vd0->vdev_guid; + (void) strcpy(path0, vd0->vdev_path); + (void) strcpy(pathrand, vd0->vdev_path); + + leaf = 0; + leaves = 1; + maxfaults = INT_MAX; /* no limit on cache devices */ + } + + dprintf("damaging %s and %s\n", path0, pathrand); + + spa_config_exit(spa, SCL_STATE, FTAG); + + if (maxfaults == 0) + return; + + /* + * If we can tolerate two or more faults, randomly online/offline vd0. + */ + if (maxfaults >= 2 && guid0 != 0) { + if (ztest_random(10) < 6) + (void) vdev_offline(spa, guid0, B_TRUE); + else + (void) vdev_online(spa, guid0, B_FALSE, NULL); + } + + /* + * We have at least single-fault tolerance, so inject data corruption. + */ + fd = open(pathrand, O_RDWR); + + if (fd == -1) /* we hit a gap in the device namespace */ + return; + + fsize = lseek(fd, 0, SEEK_END); + + while (--iters != 0) { + offset = ztest_random(fsize / (leaves << bshift)) * + (leaves << bshift) + (leaf << bshift) + + (ztest_random(1ULL << (bshift - 1)) & -8ULL); + + if (offset >= fsize) + continue; + + if (zopt_verbose >= 6) + (void) printf("injecting bad word into %s," + " offset 0x%llx\n", pathrand, (u_longlong_t)offset); + + if (pwrite(fd, &bad, sizeof (bad), offset) != sizeof (bad)) + fatal(1, "can't inject bad word at 0x%llx in %s", + offset, pathrand); + } + + (void) close(fd); +} + +/* + * Scrub the pool. + */ +void +ztest_scrub(ztest_args_t *za) +{ + spa_t *spa = za->za_spa; + + (void) spa_scrub(spa, POOL_SCRUB_EVERYTHING); + (void) poll(NULL, 0, 1000); /* wait a second, then force a restart */ + (void) spa_scrub(spa, POOL_SCRUB_EVERYTHING); +} + +/* + * Rename the pool to a different name and then rename it back. + */ +void +ztest_spa_rename(ztest_args_t *za) +{ + char *oldname, *newname; + int error; + spa_t *spa; + + (void) rw_wrlock(&ztest_shared->zs_name_lock); + + oldname = za->za_pool; + newname = umem_alloc(strlen(oldname) + 5, UMEM_NOFAIL); + (void) strcpy(newname, oldname); + (void) strcat(newname, "_tmp"); + + /* + * Do the rename + */ + error = spa_rename(oldname, newname); + if (error) + fatal(0, "spa_rename('%s', '%s') = %d", oldname, + newname, error); + + /* + * Try to open it under the old name, which shouldn't exist + */ + error = spa_open(oldname, &spa, FTAG); + if (error != ENOENT) + fatal(0, "spa_open('%s') = %d", oldname, error); + + /* + * Open it under the new name and make sure it's still the same spa_t. + */ + error = spa_open(newname, &spa, FTAG); + if (error != 0) + fatal(0, "spa_open('%s') = %d", newname, error); + + ASSERT(spa == za->za_spa); + spa_close(spa, FTAG); + + /* + * Rename it back to the original + */ + error = spa_rename(newname, oldname); + if (error) + fatal(0, "spa_rename('%s', '%s') = %d", newname, + oldname, error); + + /* + * Make sure it can still be opened + */ + error = spa_open(oldname, &spa, FTAG); + if (error != 0) + fatal(0, "spa_open('%s') = %d", oldname, error); + + ASSERT(spa == za->za_spa); + spa_close(spa, FTAG); + + umem_free(newname, strlen(newname) + 1); + + (void) rw_unlock(&ztest_shared->zs_name_lock); +} + + +/* + * Completely obliterate one disk. + */ +static void +ztest_obliterate_one_disk(uint64_t vdev) +{ + int fd; + char dev_name[MAXPATHLEN], copy_name[MAXPATHLEN]; + size_t fsize; + + if (zopt_maxfaults < 2) + return; + + (void) sprintf(dev_name, ztest_dev_template, zopt_dir, zopt_pool, vdev); + (void) snprintf(copy_name, MAXPATHLEN, "%s.old", dev_name); + + fd = open(dev_name, O_RDWR); + + if (fd == -1) + fatal(1, "can't open %s", dev_name); + + /* + * Determine the size. + */ + fsize = lseek(fd, 0, SEEK_END); + + (void) close(fd); + + /* + * Rename the old device to dev_name.old (useful for debugging). + */ + VERIFY(rename(dev_name, copy_name) == 0); + + /* + * Create a new one. + */ + VERIFY((fd = open(dev_name, O_RDWR | O_CREAT | O_TRUNC, 0666)) >= 0); + VERIFY(ftruncate(fd, fsize) == 0); + (void) close(fd); +} + +static void +ztest_replace_one_disk(spa_t *spa, uint64_t vdev) +{ + char dev_name[MAXPATHLEN]; + nvlist_t *root; + int error; + uint64_t guid; + vdev_t *vd; + + (void) sprintf(dev_name, ztest_dev_template, zopt_dir, zopt_pool, vdev); + + /* + * Build the nvlist describing dev_name. + */ + root = make_vdev_root(dev_name, NULL, 0, 0, 0, 0, 0, 1); + + spa_config_enter(spa, SCL_VDEV, FTAG, RW_READER); + if ((vd = vdev_lookup_by_path(spa->spa_root_vdev, dev_name)) == NULL) + guid = 0; + else + guid = vd->vdev_guid; + spa_config_exit(spa, SCL_VDEV, FTAG); + error = spa_vdev_attach(spa, guid, root, B_TRUE); + if (error != 0 && + error != EBUSY && + error != ENOTSUP && + error != ENODEV && + error != EDOM) + fatal(0, "spa_vdev_attach(in-place) = %d", error); + + nvlist_free(root); +} + +static void +ztest_verify_blocks(char *pool) +{ + int status; + char zdb[MAXPATHLEN + MAXNAMELEN + 20]; + char zbuf[1024]; + char *bin; + char *ztest; + char *isa; + int isalen; + FILE *fp; + + (void) realpath(getexecname(), zdb); + + /* zdb lives in /usr/sbin, while ztest lives in /usr/bin */ + bin = strstr(zdb, "/usr/bin/"); + ztest = strstr(bin, "/ztest"); + isa = bin + 8; + isalen = ztest - isa; + isa = strdup(isa); + /* LINTED */ + (void) sprintf(bin, + "/usr/sbin%.*s/zdb -bc%s%s -U /tmp/zpool.cache %s", + isalen, + isa, + zopt_verbose >= 3 ? "s" : "", + zopt_verbose >= 4 ? "v" : "", + pool); + free(isa); + + if (zopt_verbose >= 5) + (void) printf("Executing %s\n", strstr(zdb, "zdb ")); + + fp = popen(zdb, "r"); + + while (fgets(zbuf, sizeof (zbuf), fp) != NULL) + if (zopt_verbose >= 3) + (void) printf("%s", zbuf); + + status = pclose(fp); + + if (status == 0) + return; + + ztest_dump_core = 0; + if (WIFEXITED(status)) + fatal(0, "'%s' exit code %d", zdb, WEXITSTATUS(status)); + else + fatal(0, "'%s' died with signal %d", zdb, WTERMSIG(status)); +} + +static void +ztest_walk_pool_directory(char *header) +{ + spa_t *spa = NULL; + + if (zopt_verbose >= 6) + (void) printf("%s\n", header); + + mutex_enter(&spa_namespace_lock); + while ((spa = spa_next(spa)) != NULL) + if (zopt_verbose >= 6) + (void) printf("\t%s\n", spa_name(spa)); + mutex_exit(&spa_namespace_lock); +} + +static void +ztest_spa_import_export(char *oldname, char *newname) +{ + nvlist_t *config; + uint64_t pool_guid; + spa_t *spa; + int error; + + if (zopt_verbose >= 4) { + (void) printf("import/export: old = %s, new = %s\n", + oldname, newname); + } + + /* + * Clean up from previous runs. + */ + (void) spa_destroy(newname); + + /* + * Get the pool's configuration and guid. + */ + error = spa_open(oldname, &spa, FTAG); + if (error) + fatal(0, "spa_open('%s') = %d", oldname, error); + + pool_guid = spa_guid(spa); + spa_close(spa, FTAG); + + ztest_walk_pool_directory("pools before export"); + + /* + * Export it. + */ + error = spa_export(oldname, &config, B_FALSE); + if (error) + fatal(0, "spa_export('%s') = %d", oldname, error); + + ztest_walk_pool_directory("pools after export"); + + /* + * Import it under the new name. + */ + error = spa_import(newname, config, NULL); + if (error) + fatal(0, "spa_import('%s') = %d", newname, error); + + ztest_walk_pool_directory("pools after import"); + + /* + * Try to import it again -- should fail with EEXIST. + */ + error = spa_import(newname, config, NULL); + if (error != EEXIST) + fatal(0, "spa_import('%s') twice", newname); + + /* + * Try to import it under a different name -- should fail with EEXIST. + */ + error = spa_import(oldname, config, NULL); + if (error != EEXIST) + fatal(0, "spa_import('%s') under multiple names", newname); + + /* + * Verify that the pool is no longer visible under the old name. + */ + error = spa_open(oldname, &spa, FTAG); + if (error != ENOENT) + fatal(0, "spa_open('%s') = %d", newname, error); + + /* + * Verify that we can open and close the pool using the new name. + */ + error = spa_open(newname, &spa, FTAG); + if (error) + fatal(0, "spa_open('%s') = %d", newname, error); + ASSERT(pool_guid == spa_guid(spa)); + spa_close(spa, FTAG); + + nvlist_free(config); +} + +static void * +ztest_resume(void *arg) +{ + spa_t *spa = arg; + + while (!ztest_exiting) { + (void) poll(NULL, 0, 1000); + + if (!spa_suspended(spa)) + continue; + + spa_vdev_state_enter(spa); + vdev_clear(spa, NULL); + (void) spa_vdev_state_exit(spa, NULL, 0); + + zio_resume(spa); + } + return (NULL); +} + +static void * +ztest_thread(void *arg) +{ + ztest_args_t *za = arg; + ztest_shared_t *zs = ztest_shared; + hrtime_t now, functime; + ztest_info_t *zi; + int f, i; + + while ((now = gethrtime()) < za->za_stop) { + /* + * See if it's time to force a crash. + */ + if (now > za->za_kill) { + zs->zs_alloc = spa_get_alloc(za->za_spa); + zs->zs_space = spa_get_space(za->za_spa); + (void) kill(getpid(), SIGKILL); + } + + /* + * Pick a random function. + */ + f = ztest_random(ZTEST_FUNCS); + zi = &zs->zs_info[f]; + + /* + * Decide whether to call it, based on the requested frequency. + */ + if (zi->zi_call_target == 0 || + (double)zi->zi_call_total / zi->zi_call_target > + (double)(now - zs->zs_start_time) / (zopt_time * NANOSEC)) + continue; + + atomic_add_64(&zi->zi_calls, 1); + atomic_add_64(&zi->zi_call_total, 1); + + za->za_diroff = (za->za_instance * ZTEST_FUNCS + f) * + ZTEST_DIRSIZE; + za->za_diroff_shared = (1ULL << 63); + + for (i = 0; i < zi->zi_iters; i++) + zi->zi_func(za); + + functime = gethrtime() - now; + + atomic_add_64(&zi->zi_call_time, functime); + + if (zopt_verbose >= 4) { + Dl_info dli; + (void) dladdr((void *)zi->zi_func, &dli); + (void) printf("%6.2f sec in %s\n", + (double)functime / NANOSEC, dli.dli_sname); + } + + /* + * If we're getting ENOSPC with some regularity, stop. + */ + if (zs->zs_enospc_count > 10) + break; + } + + return (NULL); +} + +/* + * Kick off threads to run tests on all datasets in parallel. + */ +static void +ztest_run(char *pool) +{ + int t, d, error; + ztest_shared_t *zs = ztest_shared; + ztest_args_t *za; + spa_t *spa; + char name[100]; + thread_t resume_tid; + + ztest_exiting = B_FALSE; + + (void) _mutex_init(&zs->zs_vdev_lock, USYNC_THREAD, NULL); + (void) rwlock_init(&zs->zs_name_lock, USYNC_THREAD, NULL); + + for (t = 0; t < ZTEST_SYNC_LOCKS; t++) + (void) _mutex_init(&zs->zs_sync_lock[t], USYNC_THREAD, NULL); + + /* + * Destroy one disk before we even start. + * It's mirrored, so everything should work just fine. + * This makes us exercise fault handling very early in spa_load(). + */ + ztest_obliterate_one_disk(0); + + /* + * Verify that the sum of the sizes of all blocks in the pool + * equals the SPA's allocated space total. + */ + ztest_verify_blocks(pool); + + /* + * Kick off a replacement of the disk we just obliterated. + */ + kernel_init(FREAD | FWRITE); + VERIFY(spa_open(pool, &spa, FTAG) == 0); + ztest_replace_one_disk(spa, 0); + if (zopt_verbose >= 5) + show_pool_stats(spa); + spa_close(spa, FTAG); + kernel_fini(); + + kernel_init(FREAD | FWRITE); + + /* + * Verify that we can export the pool and reimport it under a + * different name. + */ + if (ztest_random(2) == 0) { + (void) snprintf(name, 100, "%s_import", pool); + ztest_spa_import_export(pool, name); + ztest_spa_import_export(name, pool); + } + + /* + * Verify that we can loop over all pools. + */ + mutex_enter(&spa_namespace_lock); + for (spa = spa_next(NULL); spa != NULL; spa = spa_next(spa)) { + if (zopt_verbose > 3) { + (void) printf("spa_next: found %s\n", spa_name(spa)); + } + } + mutex_exit(&spa_namespace_lock); + + /* + * Open our pool. + */ + VERIFY(spa_open(pool, &spa, FTAG) == 0); + + /* + * Create a thread to periodically resume suspended I/O. + */ + VERIFY(thr_create(0, 0, ztest_resume, spa, THR_BOUND, + &resume_tid) == 0); + + /* + * Verify that we can safely inquire about about any object, + * whether it's allocated or not. To make it interesting, + * we probe a 5-wide window around each power of two. + * This hits all edge cases, including zero and the max. + */ + for (t = 0; t < 64; t++) { + for (d = -5; d <= 5; d++) { + error = dmu_object_info(spa->spa_meta_objset, + (1ULL << t) + d, NULL); + ASSERT(error == 0 || error == ENOENT || + error == EINVAL); + } + } + + /* + * Now kick off all the tests that run in parallel. + */ + zs->zs_enospc_count = 0; + + za = umem_zalloc(zopt_threads * sizeof (ztest_args_t), UMEM_NOFAIL); + + if (zopt_verbose >= 4) + (void) printf("starting main threads...\n"); + + za[0].za_start = gethrtime(); + za[0].za_stop = za[0].za_start + zopt_passtime * NANOSEC; + za[0].za_stop = MIN(za[0].za_stop, zs->zs_stop_time); + za[0].za_kill = za[0].za_stop; + if (ztest_random(100) < zopt_killrate) + za[0].za_kill -= ztest_random(zopt_passtime * NANOSEC); + + for (t = 0; t < zopt_threads; t++) { + d = t % zopt_datasets; + + (void) strcpy(za[t].za_pool, pool); + za[t].za_os = za[d].za_os; + za[t].za_spa = spa; + za[t].za_zilog = za[d].za_zilog; + za[t].za_instance = t; + za[t].za_random = ztest_random(-1ULL); + za[t].za_start = za[0].za_start; + za[t].za_stop = za[0].za_stop; + za[t].za_kill = za[0].za_kill; + + if (t < zopt_datasets) { + ztest_replay_t zr; + int test_future = FALSE; + (void) rw_rdlock(&ztest_shared->zs_name_lock); + (void) snprintf(name, 100, "%s/%s_%d", pool, pool, d); + error = dmu_objset_create(name, DMU_OST_OTHER, NULL, 0, + ztest_create_cb, NULL); + if (error == EEXIST) { + test_future = TRUE; + } else if (error == ENOSPC) { + zs->zs_enospc_count++; + (void) rw_unlock(&ztest_shared->zs_name_lock); + break; + } else if (error != 0) { + fatal(0, "dmu_objset_create(%s) = %d", + name, error); + } + error = dmu_objset_open(name, DMU_OST_OTHER, + DS_MODE_USER, &za[d].za_os); + if (error) + fatal(0, "dmu_objset_open('%s') = %d", + name, error); + (void) rw_unlock(&ztest_shared->zs_name_lock); + if (test_future) + ztest_dmu_check_future_leak(&za[t]); + zr.zr_os = za[d].za_os; + zil_replay(zr.zr_os, &zr, &zr.zr_assign, + ztest_replay_vector, NULL); + za[d].za_zilog = zil_open(za[d].za_os, NULL); + } + + VERIFY(thr_create(0, 0, ztest_thread, &za[t], THR_BOUND, + &za[t].za_thread) == 0); + } + + while (--t >= 0) { + VERIFY(thr_join(za[t].za_thread, NULL, NULL) == 0); + if (t < zopt_datasets) { + zil_close(za[t].za_zilog); + dmu_objset_close(za[t].za_os); + } + } + + if (zopt_verbose >= 3) + show_pool_stats(spa); + + txg_wait_synced(spa_get_dsl(spa), 0); + + zs->zs_alloc = spa_get_alloc(spa); + zs->zs_space = spa_get_space(spa); + + /* + * If we had out-of-space errors, destroy a random objset. + */ + if (zs->zs_enospc_count != 0) { + (void) rw_rdlock(&ztest_shared->zs_name_lock); + d = (int)ztest_random(zopt_datasets); + (void) snprintf(name, 100, "%s/%s_%d", pool, pool, d); + if (zopt_verbose >= 3) + (void) printf("Destroying %s to free up space\n", name); + (void) dmu_objset_find(name, ztest_destroy_cb, &za[d], + DS_FIND_SNAPSHOTS | DS_FIND_CHILDREN); + (void) rw_unlock(&ztest_shared->zs_name_lock); + } + + txg_wait_synced(spa_get_dsl(spa), 0); + + umem_free(za, zopt_threads * sizeof (ztest_args_t)); + + /* Kill the resume thread */ + ztest_exiting = B_TRUE; + VERIFY(thr_join(resume_tid, NULL, NULL) == 0); + + /* + * Right before closing the pool, kick off a bunch of async I/O; + * spa_close() should wait for it to complete. + */ + for (t = 1; t < 50; t++) + dmu_prefetch(spa->spa_meta_objset, t, 0, 1 << 15); + + spa_close(spa, FTAG); + + kernel_fini(); +} + +void +print_time(hrtime_t t, char *timebuf) +{ + hrtime_t s = t / NANOSEC; + hrtime_t m = s / 60; + hrtime_t h = m / 60; + hrtime_t d = h / 24; + + s -= m * 60; + m -= h * 60; + h -= d * 24; + + timebuf[0] = '\0'; + + if (d) + (void) sprintf(timebuf, + "%llud%02lluh%02llum%02llus", d, h, m, s); + else if (h) + (void) sprintf(timebuf, "%lluh%02llum%02llus", h, m, s); + else if (m) + (void) sprintf(timebuf, "%llum%02llus", m, s); + else + (void) sprintf(timebuf, "%llus", s); +} + +/* + * Create a storage pool with the given name and initial vdev size. + * Then create the specified number of datasets in the pool. + */ +static void +ztest_init(char *pool) +{ + spa_t *spa; + int error; + nvlist_t *nvroot; + + kernel_init(FREAD | FWRITE); + + /* + * Create the storage pool. + */ + (void) spa_destroy(pool); + ztest_shared->zs_vdev_primaries = 0; + nvroot = make_vdev_root(NULL, NULL, zopt_vdev_size, 0, + 0, zopt_raidz, zopt_mirrors, 1); + error = spa_create(pool, nvroot, NULL, NULL, NULL); + nvlist_free(nvroot); + + if (error) + fatal(0, "spa_create() = %d", error); + error = spa_open(pool, &spa, FTAG); + if (error) + fatal(0, "spa_open() = %d", error); + + if (zopt_verbose >= 3) + show_pool_stats(spa); + + spa_close(spa, FTAG); + + kernel_fini(); +} + +int +main(int argc, char **argv) +{ + int kills = 0; + int iters = 0; + int i, f; + ztest_shared_t *zs; + ztest_info_t *zi; + char timebuf[100]; + char numbuf[6]; + + (void) setvbuf(stdout, NULL, _IOLBF, 0); + + /* Override location of zpool.cache */ + spa_config_path = "/tmp/zpool.cache"; + + ztest_random_fd = open("/dev/urandom", O_RDONLY); + + process_options(argc, argv); + + argc -= optind; + argv += optind; + + dprintf_setup(&argc, argv); + + /* + * Blow away any existing copy of zpool.cache + */ + if (zopt_init != 0) + (void) remove("/tmp/zpool.cache"); + + zs = ztest_shared = (void *)mmap(0, + P2ROUNDUP(sizeof (ztest_shared_t), getpagesize()), + PROT_READ | PROT_WRITE, MAP_SHARED | MAP_ANON, -1, 0); + + if (zopt_verbose >= 1) { + (void) printf("%llu vdevs, %d datasets, %d threads," + " %llu seconds...\n", + (u_longlong_t)zopt_vdevs, zopt_datasets, zopt_threads, + (u_longlong_t)zopt_time); + } + + /* + * Create and initialize our storage pool. + */ + for (i = 1; i <= zopt_init; i++) { + bzero(zs, sizeof (ztest_shared_t)); + if (zopt_verbose >= 3 && zopt_init != 1) + (void) printf("ztest_init(), pass %d\n", i); + ztest_init(zopt_pool); + } + + /* + * Initialize the call targets for each function. + */ + for (f = 0; f < ZTEST_FUNCS; f++) { + zi = &zs->zs_info[f]; + + *zi = ztest_info[f]; + + if (*zi->zi_interval == 0) + zi->zi_call_target = UINT64_MAX; + else + zi->zi_call_target = zopt_time / *zi->zi_interval; + } + + zs->zs_start_time = gethrtime(); + zs->zs_stop_time = zs->zs_start_time + zopt_time * NANOSEC; + + /* + * Run the tests in a loop. These tests include fault injection + * to verify that self-healing data works, and forced crashes + * to verify that we never lose on-disk consistency. + */ + while (gethrtime() < zs->zs_stop_time) { + int status; + pid_t pid; + char *tmp; + + /* + * Initialize the workload counters for each function. + */ + for (f = 0; f < ZTEST_FUNCS; f++) { + zi = &zs->zs_info[f]; + zi->zi_calls = 0; + zi->zi_call_time = 0; + } + + pid = fork(); + + if (pid == -1) + fatal(1, "fork failed"); + + if (pid == 0) { /* child */ + struct rlimit rl = { 1024, 1024 }; + (void) setrlimit(RLIMIT_NOFILE, &rl); + (void) enable_extended_FILE_stdio(-1, -1); + ztest_run(zopt_pool); + exit(0); + } + + while (waitpid(pid, &status, 0) != pid) + continue; + + if (WIFEXITED(status)) { + if (WEXITSTATUS(status) != 0) { + (void) fprintf(stderr, + "child exited with code %d\n", + WEXITSTATUS(status)); + exit(2); + } + } else if (WIFSIGNALED(status)) { + if (WTERMSIG(status) != SIGKILL) { + (void) fprintf(stderr, + "child died with signal %d\n", + WTERMSIG(status)); + exit(3); + } + kills++; + } else { + (void) fprintf(stderr, "something strange happened " + "to child\n"); + exit(4); + } + + iters++; + + if (zopt_verbose >= 1) { + hrtime_t now = gethrtime(); + + now = MIN(now, zs->zs_stop_time); + print_time(zs->zs_stop_time - now, timebuf); + nicenum(zs->zs_space, numbuf); + + (void) printf("Pass %3d, %8s, %3llu ENOSPC, " + "%4.1f%% of %5s used, %3.0f%% done, %8s to go\n", + iters, + WIFEXITED(status) ? "Complete" : "SIGKILL", + (u_longlong_t)zs->zs_enospc_count, + 100.0 * zs->zs_alloc / zs->zs_space, + numbuf, + 100.0 * (now - zs->zs_start_time) / + (zopt_time * NANOSEC), timebuf); + } + + if (zopt_verbose >= 2) { + (void) printf("\nWorkload summary:\n\n"); + (void) printf("%7s %9s %s\n", + "Calls", "Time", "Function"); + (void) printf("%7s %9s %s\n", + "-----", "----", "--------"); + for (f = 0; f < ZTEST_FUNCS; f++) { + Dl_info dli; + + zi = &zs->zs_info[f]; + print_time(zi->zi_call_time, timebuf); + (void) dladdr((void *)zi->zi_func, &dli); + (void) printf("%7llu %9s %s\n", + (u_longlong_t)zi->zi_calls, timebuf, + dli.dli_sname); + } + (void) printf("\n"); + } + + /* + * It's possible that we killed a child during a rename test, in + * which case we'll have a 'ztest_tmp' pool lying around instead + * of 'ztest'. Do a blind rename in case this happened. + */ + tmp = umem_alloc(strlen(zopt_pool) + 5, UMEM_NOFAIL); + (void) strcpy(tmp, zopt_pool); + (void) strcat(tmp, "_tmp"); + kernel_init(FREAD | FWRITE); + (void) spa_rename(tmp, zopt_pool); + kernel_fini(); + umem_free(tmp, strlen(tmp) + 1); + } + + ztest_verify_blocks(zopt_pool); + + if (zopt_verbose >= 1) { + (void) printf("%d killed, %d completed, %.0f%% kill rate\n", + kills, iters - kills, (100.0 * kills) / MAX(1, iters)); + } + + return (0); +} |