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-rw-r--r--cddl/contrib/opensolaris/cmd/ztest/ztest.c7135
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diff --git a/cddl/contrib/opensolaris/cmd/ztest/ztest.c b/cddl/contrib/opensolaris/cmd/ztest/ztest.c
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@@ -1,7135 +0,0 @@
-/*
- * 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 (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
- * Copyright (c) 2011, 2018 by Delphix. All rights reserved.
- * Copyright 2011 Nexenta Systems, Inc. All rights reserved.
- * Copyright (c) 2012 Martin Matuska <mm@FreeBSD.org>. All rights reserved.
- * Copyright (c) 2013 Steven Hartland. All rights reserved.
- * Copyright (c) 2014 Integros [integros.com]
- * Copyright 2017 Joyent, Inc.
- * Copyright (c) 2017, Intel Corporation.
- * Copyright 2017 RackTop Systems.
- */
-
-/*
- * 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. If backwards compatibility
- * testing is enabled ztest will sometimes run the "older" version
- * of ztest after a SIGKILL.
- *
- * (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.
- *
- * Use the -k option to set the desired frequency of kills.
- *
- * When ztest invokes itself it passes all relevant information through a
- * temporary file which is mmap-ed in the child process. This allows shared
- * memory to survive the exec syscall. The ztest_shared_hdr_t struct is always
- * stored at offset 0 of this file and contains information on the size and
- * number of shared structures in the file. The information stored in this file
- * must remain backwards compatible with older versions of ztest so that
- * ztest can invoke them during backwards compatibility testing (-B).
- */
-
-#include <sys/zfs_context.h>
-#include <sys/spa.h>
-#include <sys/dmu.h>
-#include <sys/txg.h>
-#include <sys/dbuf.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/zil.h>
-#include <sys/zil_impl.h>
-#include <sys/vdev_impl.h>
-#include <sys/vdev_file.h>
-#include <sys/vdev_initialize.h>
-#include <sys/spa_impl.h>
-#include <sys/metaslab_impl.h>
-#include <sys/dsl_prop.h>
-#include <sys/dsl_dataset.h>
-#include <sys/dsl_destroy.h>
-#include <sys/dsl_scan.h>
-#include <sys/zio_checksum.h>
-#include <sys/refcount.h>
-#include <sys/zfeature.h>
-#include <sys/dsl_userhold.h>
-#include <sys/abd.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 <errno.h>
-#include <sys/fs/zfs.h>
-#include <libnvpair.h>
-#include <libzfs.h>
-#include <libcmdutils.h>
-
-static int ztest_fd_data = -1;
-static int ztest_fd_rand = -1;
-
-typedef struct ztest_shared_hdr {
- uint64_t zh_hdr_size;
- uint64_t zh_opts_size;
- uint64_t zh_size;
- uint64_t zh_stats_size;
- uint64_t zh_stats_count;
- uint64_t zh_ds_size;
- uint64_t zh_ds_count;
-} ztest_shared_hdr_t;
-
-static ztest_shared_hdr_t *ztest_shared_hdr;
-
-enum ztest_class_state {
- ZTEST_VDEV_CLASS_OFF,
- ZTEST_VDEV_CLASS_ON,
- ZTEST_VDEV_CLASS_RND
-};
-
-typedef struct ztest_shared_opts {
- char zo_pool[ZFS_MAX_DATASET_NAME_LEN];
- char zo_dir[ZFS_MAX_DATASET_NAME_LEN];
- char zo_alt_ztest[MAXNAMELEN];
- char zo_alt_libpath[MAXNAMELEN];
- uint64_t zo_vdevs;
- uint64_t zo_vdevtime;
- size_t zo_vdev_size;
- int zo_ashift;
- int zo_mirrors;
- int zo_raidz;
- int zo_raidz_parity;
- int zo_datasets;
- int zo_threads;
- uint64_t zo_passtime;
- uint64_t zo_killrate;
- int zo_verbose;
- int zo_init;
- uint64_t zo_time;
- uint64_t zo_maxloops;
- uint64_t zo_metaslab_force_ganging;
- int zo_mmp_test;
- int zo_special_vdevs;
-} ztest_shared_opts_t;
-
-static const ztest_shared_opts_t ztest_opts_defaults = {
- .zo_pool = { 'z', 't', 'e', 's', 't', '\0' },
- .zo_dir = { '/', 't', 'm', 'p', '\0' },
- .zo_alt_ztest = { '\0' },
- .zo_alt_libpath = { '\0' },
- .zo_vdevs = 5,
- .zo_ashift = SPA_MINBLOCKSHIFT,
- .zo_mirrors = 2,
- .zo_raidz = 4,
- .zo_raidz_parity = 1,
- .zo_vdev_size = SPA_MINDEVSIZE * 4, /* 256m default size */
- .zo_datasets = 7,
- .zo_threads = 23,
- .zo_passtime = 60, /* 60 seconds */
- .zo_killrate = 70, /* 70% kill rate */
- .zo_verbose = 0,
- .zo_mmp_test = 0,
- .zo_init = 1,
- .zo_time = 300, /* 5 minutes */
- .zo_maxloops = 50, /* max loops during spa_freeze() */
- .zo_metaslab_force_ganging = 32 << 10,
- .zo_special_vdevs = ZTEST_VDEV_CLASS_RND,
-};
-
-extern uint64_t metaslab_force_ganging;
-extern uint64_t metaslab_df_alloc_threshold;
-extern uint64_t zfs_deadman_synctime_ms;
-extern int metaslab_preload_limit;
-extern boolean_t zfs_compressed_arc_enabled;
-extern boolean_t zfs_abd_scatter_enabled;
-extern int dmu_object_alloc_chunk_shift;
-extern boolean_t zfs_force_some_double_word_sm_entries;
-extern unsigned long zfs_reconstruct_indirect_damage_fraction;
-
-static ztest_shared_opts_t *ztest_shared_opts;
-static ztest_shared_opts_t ztest_opts;
-
-typedef struct ztest_shared_ds {
- uint64_t zd_seq;
-} ztest_shared_ds_t;
-
-static ztest_shared_ds_t *ztest_shared_ds;
-#define ZTEST_GET_SHARED_DS(d) (&ztest_shared_ds[d])
-
-#define BT_MAGIC 0x123456789abcdefULL
-#define MAXFAULTS() \
- (MAX(zs->zs_mirrors, 1) * (ztest_opts.zo_raidz_parity + 1) - 1)
-
-enum ztest_io_type {
- ZTEST_IO_WRITE_TAG,
- ZTEST_IO_WRITE_PATTERN,
- ZTEST_IO_WRITE_ZEROES,
- ZTEST_IO_TRUNCATE,
- ZTEST_IO_SETATTR,
- ZTEST_IO_REWRITE,
- ZTEST_IO_TYPES
-};
-
-typedef struct ztest_block_tag {
- uint64_t bt_magic;
- uint64_t bt_objset;
- uint64_t bt_object;
- uint64_t bt_dnodesize;
- uint64_t bt_offset;
- uint64_t bt_gen;
- uint64_t bt_txg;
- uint64_t bt_crtxg;
-} ztest_block_tag_t;
-
-typedef struct bufwad {
- uint64_t bw_index;
- uint64_t bw_txg;
- uint64_t bw_data;
-} bufwad_t;
-
-/*
- * It would be better to use a rangelock_t per object. Unfortunately
- * the rangelock_t is not a drop-in replacement for rl_t, because we
- * still need to map from object ID to rangelock_t.
- */
-typedef enum {
- RL_READER,
- RL_WRITER,
- RL_APPEND
-} rl_type_t;
-
-typedef struct rll {
- void *rll_writer;
- int rll_readers;
- kmutex_t rll_lock;
- kcondvar_t rll_cv;
-} rll_t;
-
-typedef struct rl {
- uint64_t rl_object;
- uint64_t rl_offset;
- uint64_t rl_size;
- rll_t *rl_lock;
-} rl_t;
-
-#define ZTEST_RANGE_LOCKS 64
-#define ZTEST_OBJECT_LOCKS 64
-
-/*
- * Object descriptor. Used as a template for object lookup/create/remove.
- */
-typedef struct ztest_od {
- uint64_t od_dir;
- uint64_t od_object;
- dmu_object_type_t od_type;
- dmu_object_type_t od_crtype;
- uint64_t od_blocksize;
- uint64_t od_crblocksize;
- uint64_t od_crdnodesize;
- uint64_t od_gen;
- uint64_t od_crgen;
- char od_name[ZFS_MAX_DATASET_NAME_LEN];
-} ztest_od_t;
-
-/*
- * Per-dataset state.
- */
-typedef struct ztest_ds {
- ztest_shared_ds_t *zd_shared;
- objset_t *zd_os;
- krwlock_t zd_zilog_lock;
- zilog_t *zd_zilog;
- ztest_od_t *zd_od; /* debugging aid */
- char zd_name[ZFS_MAX_DATASET_NAME_LEN];
- kmutex_t zd_dirobj_lock;
- rll_t zd_object_lock[ZTEST_OBJECT_LOCKS];
- rll_t zd_range_lock[ZTEST_RANGE_LOCKS];
-} ztest_ds_t;
-
-/*
- * Per-iteration state.
- */
-typedef void ztest_func_t(ztest_ds_t *zd, uint64_t id);
-
-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 */
-} ztest_info_t;
-
-typedef struct ztest_shared_callstate {
- uint64_t zc_count; /* per-pass count */
- uint64_t zc_time; /* per-pass time */
- uint64_t zc_next; /* next time to call this function */
-} ztest_shared_callstate_t;
-
-static ztest_shared_callstate_t *ztest_shared_callstate;
-#define ZTEST_GET_SHARED_CALLSTATE(c) (&ztest_shared_callstate[c])
-
-/*
- * 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_dmu_object_next_chunk;
-ztest_func_t ztest_dmu_commit_callbacks;
-ztest_func_t ztest_zap;
-ztest_func_t ztest_zap_parallel;
-ztest_func_t ztest_zil_commit;
-ztest_func_t ztest_zil_remount;
-ztest_func_t ztest_dmu_read_write_zcopy;
-ztest_func_t ztest_dmu_objset_create_destroy;
-ztest_func_t ztest_dmu_prealloc;
-ztest_func_t ztest_fzap;
-ztest_func_t ztest_dmu_snapshot_create_destroy;
-ztest_func_t ztest_dsl_prop_get_set;
-ztest_func_t ztest_spa_prop_get_set;
-ztest_func_t ztest_spa_create_destroy;
-ztest_func_t ztest_fault_inject;
-ztest_func_t ztest_ddt_repair;
-ztest_func_t ztest_dmu_snapshot_hold;
-ztest_func_t ztest_mmp_enable_disable;
-ztest_func_t ztest_scrub;
-ztest_func_t ztest_dsl_dataset_promote_busy;
-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_class_add;
-ztest_func_t ztest_vdev_aux_add_remove;
-ztest_func_t ztest_split_pool;
-ztest_func_t ztest_reguid;
-ztest_func_t ztest_spa_upgrade;
-ztest_func_t ztest_device_removal;
-ztest_func_t ztest_remap_blocks;
-ztest_func_t ztest_spa_checkpoint_create_discard;
-ztest_func_t ztest_initialize;
-ztest_func_t ztest_verify_dnode_bt;
-
-uint64_t zopt_always = 0ULL * NANOSEC; /* all the time */
-uint64_t zopt_incessant = 1ULL * NANOSEC / 10; /* every 1/10 second */
-uint64_t zopt_often = 1ULL * NANOSEC; /* every second */
-uint64_t zopt_sometimes = 10ULL * NANOSEC; /* every 10 seconds */
-uint64_t zopt_rarely = 60ULL * NANOSEC; /* every 60 seconds */
-
-ztest_info_t ztest_info[] = {
- { ztest_dmu_read_write, 1, &zopt_always },
- { ztest_dmu_write_parallel, 10, &zopt_always },
- { ztest_dmu_object_alloc_free, 1, &zopt_always },
- { ztest_dmu_object_next_chunk, 1, &zopt_sometimes },
- { ztest_dmu_commit_callbacks, 1, &zopt_always },
- { ztest_zap, 30, &zopt_always },
- { ztest_zap_parallel, 100, &zopt_always },
- { ztest_split_pool, 1, &zopt_always },
- { ztest_zil_commit, 1, &zopt_incessant },
- { ztest_zil_remount, 1, &zopt_sometimes },
- { ztest_dmu_read_write_zcopy, 1, &zopt_often },
- { ztest_dmu_objset_create_destroy, 1, &zopt_often },
- { ztest_dsl_prop_get_set, 1, &zopt_often },
- { ztest_spa_prop_get_set, 1, &zopt_sometimes },
-#if 0
- { ztest_dmu_prealloc, 1, &zopt_sometimes },
-#endif
- { ztest_fzap, 1, &zopt_sometimes },
- { ztest_dmu_snapshot_create_destroy, 1, &zopt_sometimes },
- { ztest_spa_create_destroy, 1, &zopt_sometimes },
- { ztest_fault_inject, 1, &zopt_incessant },
- { ztest_ddt_repair, 1, &zopt_sometimes },
- { ztest_dmu_snapshot_hold, 1, &zopt_sometimes },
- { ztest_mmp_enable_disable, 1, &zopt_sometimes },
- { ztest_reguid, 1, &zopt_rarely },
- { ztest_scrub, 1, &zopt_often },
- { ztest_spa_upgrade, 1, &zopt_rarely },
- { ztest_dsl_dataset_promote_busy, 1, &zopt_rarely },
- { ztest_vdev_attach_detach, 1, &zopt_incessant },
- { ztest_vdev_LUN_growth, 1, &zopt_rarely },
- { ztest_vdev_add_remove, 1,
- &ztest_opts.zo_vdevtime },
- { ztest_vdev_class_add, 1,
- &ztest_opts.zo_vdevtime },
- { ztest_vdev_aux_add_remove, 1,
- &ztest_opts.zo_vdevtime },
- { ztest_device_removal, 1, &zopt_sometimes },
- { ztest_remap_blocks, 1, &zopt_sometimes },
- { ztest_spa_checkpoint_create_discard, 1, &zopt_rarely },
- { ztest_initialize, 1, &zopt_sometimes },
- { ztest_verify_dnode_bt, 1, &zopt_sometimes }
-};
-
-#define ZTEST_FUNCS (sizeof (ztest_info) / sizeof (ztest_info_t))
-
-/*
- * The following struct is used to hold a list of uncalled commit callbacks.
- * The callbacks are ordered by txg number.
- */
-typedef struct ztest_cb_list {
- kmutex_t zcl_callbacks_lock;
- list_t zcl_callbacks;
-} ztest_cb_list_t;
-
-/*
- * Stuff we need to share writably between parent and child.
- */
-typedef struct ztest_shared {
- boolean_t zs_do_init;
- hrtime_t zs_proc_start;
- hrtime_t zs_proc_stop;
- hrtime_t zs_thread_start;
- hrtime_t zs_thread_stop;
- hrtime_t zs_thread_kill;
- uint64_t zs_enospc_count;
- uint64_t zs_vdev_next_leaf;
- uint64_t zs_vdev_aux;
- uint64_t zs_alloc;
- uint64_t zs_space;
- uint64_t zs_splits;
- uint64_t zs_mirrors;
- uint64_t zs_metaslab_sz;
- uint64_t zs_metaslab_df_alloc_threshold;
- uint64_t zs_guid;
-} ztest_shared_t;
-
-#define ID_PARALLEL -1ULL
-
-static char ztest_dev_template[] = "%s/%s.%llua";
-static char ztest_aux_template[] = "%s/%s.%s.%llu";
-ztest_shared_t *ztest_shared;
-
-static spa_t *ztest_spa = NULL;
-static ztest_ds_t *ztest_ds;
-
-static kmutex_t ztest_vdev_lock;
-static boolean_t ztest_device_removal_active = B_FALSE;
-static kmutex_t ztest_checkpoint_lock;
-
-/*
- * The ztest_name_lock protects the pool and dataset namespace used by
- * the individual tests. To modify the namespace, consumers must grab
- * this lock as writer. Grabbing the lock as reader will ensure that the
- * namespace does not change while the lock is held.
- */
-static krwlock_t ztest_name_lock;
-
-static boolean_t ztest_dump_core = B_TRUE;
-static boolean_t ztest_exiting;
-
-/* Global commit callback list */
-static ztest_cb_list_t zcl;
-
-enum ztest_object {
- ZTEST_META_DNODE = 0,
- ZTEST_DIROBJ,
- ZTEST_OBJECTS
-};
-
-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)
-{
- const ztest_shared_opts_t *zo = &ztest_opts_defaults;
-
- char nice_vdev_size[NN_NUMBUF_SZ];
- char nice_force_ganging[NN_NUMBUF_SZ];
- FILE *fp = requested ? stdout : stderr;
-
- nicenum(zo->zo_vdev_size, nice_vdev_size, sizeof (nice_vdev_size));
- nicenum(zo->zo_metaslab_force_ganging, nice_force_ganging,
- sizeof (nice_force_ganging));
-
- (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 init_count (default: %d)] initialize pool i times\n"
- "\t[-k kill_percentage (default: %llu%%)]\n"
- "\t[-p pool_name (default: %s)]\n"
- "\t[-f dir (default: %s)] file directory for vdev files\n"
- "\t[-M] Multi-host simulate pool imported on remote host\n"
- "\t[-V] verbose (use multiple times for ever more blather)\n"
- "\t[-E] use existing pool instead of creating new one\n"
- "\t[-T time (default: %llu sec)] total run time\n"
- "\t[-F freezeloops (default: %llu)] max loops in spa_freeze()\n"
- "\t[-P passtime (default: %llu sec)] time per pass\n"
- "\t[-B alt_ztest (default: <none>)] alternate ztest path\n"
- "\t[-C vdev class state (default: random)] special=on|off|random\n"
- "\t[-o variable=value] ... set global variable to an unsigned\n"
- "\t 32-bit integer value\n"
- "\t[-h] (print help)\n"
- "",
- zo->zo_pool,
- (u_longlong_t)zo->zo_vdevs, /* -v */
- nice_vdev_size, /* -s */
- zo->zo_ashift, /* -a */
- zo->zo_mirrors, /* -m */
- zo->zo_raidz, /* -r */
- zo->zo_raidz_parity, /* -R */
- zo->zo_datasets, /* -d */
- zo->zo_threads, /* -t */
- nice_force_ganging, /* -g */
- zo->zo_init, /* -i */
- (u_longlong_t)zo->zo_killrate, /* -k */
- zo->zo_pool, /* -p */
- zo->zo_dir, /* -f */
- (u_longlong_t)zo->zo_time, /* -T */
- (u_longlong_t)zo->zo_maxloops, /* -F */
- (u_longlong_t)zo->zo_passtime);
- exit(requested ? 0 : 1);
-}
-
-
-static void
-ztest_parse_name_value(const char *input, ztest_shared_opts_t *zo)
-{
- char name[32];
- char *value;
- int state = ZTEST_VDEV_CLASS_RND;
-
- (void) strlcpy(name, input, sizeof (name));
-
- value = strchr(name, '=');
- if (value == NULL) {
- (void) fprintf(stderr, "missing value in property=value "
- "'-C' argument (%s)\n", input);
- usage(B_FALSE);
- }
- *(value) = '\0';
- value++;
-
- if (strcmp(value, "on") == 0) {
- state = ZTEST_VDEV_CLASS_ON;
- } else if (strcmp(value, "off") == 0) {
- state = ZTEST_VDEV_CLASS_OFF;
- } else if (strcmp(value, "random") == 0) {
- state = ZTEST_VDEV_CLASS_RND;
- } else {
- (void) fprintf(stderr, "invalid property value '%s'\n", value);
- usage(B_FALSE);
- }
-
- if (strcmp(name, "special") == 0) {
- zo->zo_special_vdevs = state;
- } else {
- (void) fprintf(stderr, "invalid property name '%s'\n", name);
- usage(B_FALSE);
- }
- if (zo->zo_verbose >= 3)
- (void) printf("%s vdev state is '%s'\n", name, value);
-}
-
-static void
-process_options(int argc, char **argv)
-{
- char *path;
- ztest_shared_opts_t *zo = &ztest_opts;
-
- int opt;
- uint64_t value;
- char altdir[MAXNAMELEN] = { 0 };
-
- bcopy(&ztest_opts_defaults, zo, sizeof (*zo));
-
- while ((opt = getopt(argc, argv,
- "v:s:a:m:r:R:d:t:g:i:k:p:f:MVET:P:hF:B:C:o:")) != 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':
- case 'F':
- value = nicenumtoull(optarg);
- }
- switch (opt) {
- case 'v':
- zo->zo_vdevs = value;
- break;
- case 's':
- zo->zo_vdev_size = MAX(SPA_MINDEVSIZE, value);
- break;
- case 'a':
- zo->zo_ashift = value;
- break;
- case 'm':
- zo->zo_mirrors = value;
- break;
- case 'r':
- zo->zo_raidz = MAX(1, value);
- break;
- case 'R':
- zo->zo_raidz_parity = MIN(MAX(value, 1), 3);
- break;
- case 'd':
- zo->zo_datasets = MAX(1, value);
- break;
- case 't':
- zo->zo_threads = MAX(1, value);
- break;
- case 'g':
- zo->zo_metaslab_force_ganging =
- MAX(SPA_MINBLOCKSIZE << 1, value);
- break;
- case 'i':
- zo->zo_init = value;
- break;
- case 'k':
- zo->zo_killrate = value;
- break;
- case 'p':
- (void) strlcpy(zo->zo_pool, optarg,
- sizeof (zo->zo_pool));
- break;
- case 'f':
- path = realpath(optarg, NULL);
- if (path == NULL) {
- (void) fprintf(stderr, "error: %s: %s\n",
- optarg, strerror(errno));
- usage(B_FALSE);
- } else {
- (void) strlcpy(zo->zo_dir, path,
- sizeof (zo->zo_dir));
- }
- break;
- case 'M':
- zo->zo_mmp_test = 1;
- break;
- case 'V':
- zo->zo_verbose++;
- break;
- case 'E':
- zo->zo_init = 0;
- break;
- case 'T':
- zo->zo_time = value;
- break;
- case 'P':
- zo->zo_passtime = MAX(1, value);
- break;
- case 'F':
- zo->zo_maxloops = MAX(1, value);
- break;
- case 'B':
- (void) strlcpy(altdir, optarg, sizeof (altdir));
- break;
- case 'C':
- ztest_parse_name_value(optarg, zo);
- break;
- case 'o':
- if (set_global_var(optarg) != 0)
- usage(B_FALSE);
- break;
- case 'h':
- usage(B_TRUE);
- break;
- case '?':
- default:
- usage(B_FALSE);
- break;
- }
- }
-
- zo->zo_raidz_parity = MIN(zo->zo_raidz_parity, zo->zo_raidz - 1);
-
- zo->zo_vdevtime =
- (zo->zo_vdevs > 0 ? zo->zo_time * NANOSEC / zo->zo_vdevs :
- UINT64_MAX >> 2);
-
- if (strlen(altdir) > 0) {
- char *cmd;
- char *realaltdir;
- char *bin;
- char *ztest;
- char *isa;
- int isalen;
-
- cmd = umem_alloc(MAXPATHLEN, UMEM_NOFAIL);
- realaltdir = umem_alloc(MAXPATHLEN, UMEM_NOFAIL);
-
- VERIFY(NULL != realpath(getexecname(), cmd));
- if (0 != access(altdir, F_OK)) {
- ztest_dump_core = B_FALSE;
- fatal(B_TRUE, "invalid alternate ztest path: %s",
- altdir);
- }
- VERIFY(NULL != realpath(altdir, realaltdir));
-
- /*
- * 'cmd' should be of the form "<anything>/usr/bin/<isa>/ztest".
- * We want to extract <isa> to determine if we should use
- * 32 or 64 bit binaries.
- */
- bin = strstr(cmd, "/usr/bin/");
- ztest = strstr(bin, "/ztest");
- isa = bin + 9;
- isalen = ztest - isa;
- (void) snprintf(zo->zo_alt_ztest, sizeof (zo->zo_alt_ztest),
- "%s/usr/bin/%.*s/ztest", realaltdir, isalen, isa);
- (void) snprintf(zo->zo_alt_libpath, sizeof (zo->zo_alt_libpath),
- "%s/usr/lib/%.*s", realaltdir, isalen, isa);
-
- if (0 != access(zo->zo_alt_ztest, X_OK)) {
- ztest_dump_core = B_FALSE;
- fatal(B_TRUE, "invalid alternate ztest: %s",
- zo->zo_alt_ztest);
- } else if (0 != access(zo->zo_alt_libpath, X_OK)) {
- ztest_dump_core = B_FALSE;
- fatal(B_TRUE, "invalid alternate lib directory %s",
- zo->zo_alt_libpath);
- }
-
- umem_free(cmd, MAXPATHLEN);
- umem_free(realaltdir, MAXPATHLEN);
- }
-}
-
-static void
-ztest_kill(ztest_shared_t *zs)
-{
- zs->zs_alloc = metaslab_class_get_alloc(spa_normal_class(ztest_spa));
- zs->zs_space = metaslab_class_get_space(spa_normal_class(ztest_spa));
-
- /*
- * Before we kill off ztest, make sure that the config is updated.
- * See comment above spa_write_cachefile().
- */
- mutex_enter(&spa_namespace_lock);
- spa_write_cachefile(ztest_spa, B_FALSE, B_FALSE);
- mutex_exit(&spa_namespace_lock);
-
- zfs_dbgmsg_print(FTAG);
- (void) kill(getpid(), SIGKILL);
-}
-
-static uint64_t
-ztest_random(uint64_t range)
-{
- uint64_t r;
-
- ASSERT3S(ztest_fd_rand, >=, 0);
-
- if (range == 0)
- return (0);
-
- if (read(ztest_fd_rand, &r, sizeof (r)) != sizeof (r))
- fatal(1, "short read from /dev/urandom");
-
- return (r % range);
-}
-
-/* ARGSUSED */
-static void
-ztest_record_enospc(const char *s)
-{
- ztest_shared->zs_enospc_count++;
-}
-
-static uint64_t
-ztest_get_ashift(void)
-{
- if (ztest_opts.zo_ashift == 0)
- return (SPA_MINBLOCKSHIFT + ztest_random(5));
- return (ztest_opts.zo_ashift);
-}
-
-static nvlist_t *
-make_vdev_file(char *path, char *aux, char *pool, 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) snprintf(path, sizeof (pathbuf),
- ztest_aux_template, ztest_opts.zo_dir,
- pool == NULL ? ztest_opts.zo_pool : pool,
- aux, vdev);
- } else {
- vdev = ztest_shared->zs_vdev_next_leaf++;
- (void) snprintf(path, sizeof (pathbuf),
- ztest_dev_template, ztest_opts.zo_dir,
- pool == NULL ? ztest_opts.zo_pool : 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, char *pool, size_t size,
- uint64_t ashift, int r)
-{
- nvlist_t *raidz, **child;
- int c;
-
- if (r < 2)
- return (make_vdev_file(path, aux, pool, size, ashift));
- child = umem_alloc(r * sizeof (nvlist_t *), UMEM_NOFAIL);
-
- for (c = 0; c < r; c++)
- child[c] = make_vdev_file(path, aux, pool, 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,
- ztest_opts.zo_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, char *pool, 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, pool, 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, pool, 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, char *pool, size_t size, uint64_t ashift,
- const char *class, int r, int m, int t)
-{
- nvlist_t *root, **child;
- int c;
- boolean_t log;
-
- ASSERT(t > 0);
-
- log = (class != NULL && strcmp(class, "log") == 0);
-
- child = umem_alloc(t * sizeof (nvlist_t *), UMEM_NOFAIL);
-
- for (c = 0; c < t; c++) {
- child[c] = make_vdev_mirror(path, aux, pool, size, ashift,
- r, m);
- VERIFY(nvlist_add_uint64(child[c], ZPOOL_CONFIG_IS_LOG,
- log) == 0);
-
- if (class != NULL && class[0] != '\0') {
- ASSERT(m > 1 || log); /* expecting a mirror */
- VERIFY(nvlist_add_string(child[c],
- ZPOOL_CONFIG_ALLOCATION_BIAS, class) == 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);
-}
-
-/*
- * Find a random spa version. Returns back a random spa version in the
- * range [initial_version, SPA_VERSION_FEATURES].
- */
-static uint64_t
-ztest_random_spa_version(uint64_t initial_version)
-{
- uint64_t version = initial_version;
-
- if (version <= SPA_VERSION_BEFORE_FEATURES) {
- version = version +
- ztest_random(SPA_VERSION_BEFORE_FEATURES - version + 1);
- }
-
- if (version > SPA_VERSION_BEFORE_FEATURES)
- version = SPA_VERSION_FEATURES;
-
- ASSERT(SPA_VERSION_IS_SUPPORTED(version));
- return (version);
-}
-
-static int
-ztest_random_blocksize(void)
-{
- uint64_t block_shift;
-
- ASSERT(ztest_spa->spa_max_ashift != 0);
-
- /*
- * Choose a block size >= the ashift.
- * If the SPA supports new MAXBLOCKSIZE, test up to 1MB blocks.
- */
- int maxbs = SPA_OLD_MAXBLOCKSHIFT;
- if (spa_maxblocksize(ztest_spa) == SPA_MAXBLOCKSIZE)
- maxbs = 20;
- block_shift = ztest_random(maxbs - ztest_spa->spa_max_ashift + 1);
- return (1 << (SPA_MINBLOCKSHIFT + block_shift));
-}
-
-static int
-ztest_random_dnodesize(void)
-{
- int slots;
- int max_slots = spa_maxdnodesize(ztest_spa) >> DNODE_SHIFT;
-
- if (max_slots == DNODE_MIN_SLOTS)
- return (DNODE_MIN_SIZE);
-
- /*
- * Weight the random distribution more heavily toward smaller
- * dnode sizes since that is more likely to reflect real-world
- * usage.
- */
- ASSERT3U(max_slots, >, 4);
- switch (ztest_random(10)) {
- case 0:
- slots = 5 + ztest_random(max_slots - 4);
- break;
- case 1 ... 4:
- slots = 2 + ztest_random(3);
- break;
- default:
- slots = 1;
- break;
- }
-
- return (slots << DNODE_SHIFT);
-}
-
-static int
-ztest_random_ibshift(void)
-{
- return (DN_MIN_INDBLKSHIFT +
- ztest_random(DN_MAX_INDBLKSHIFT - DN_MIN_INDBLKSHIFT + 1));
-}
-
-static uint64_t
-ztest_random_vdev_top(spa_t *spa, boolean_t log_ok)
-{
- uint64_t top;
- vdev_t *rvd = spa->spa_root_vdev;
- vdev_t *tvd;
-
- ASSERT(spa_config_held(spa, SCL_ALL, RW_READER) != 0);
-
- do {
- top = ztest_random(rvd->vdev_children);
- tvd = rvd->vdev_child[top];
- } while (!vdev_is_concrete(tvd) || (tvd->vdev_islog && !log_ok) ||
- tvd->vdev_mg == NULL || tvd->vdev_mg->mg_class == NULL);
-
- return (top);
-}
-
-static uint64_t
-ztest_random_dsl_prop(zfs_prop_t prop)
-{
- uint64_t value;
-
- do {
- value = zfs_prop_random_value(prop, ztest_random(-1ULL));
- } while (prop == ZFS_PROP_CHECKSUM && value == ZIO_CHECKSUM_OFF);
-
- return (value);
-}
-
-static int
-ztest_dsl_prop_set_uint64(char *osname, zfs_prop_t prop, uint64_t value,
- boolean_t inherit)
-{
- const char *propname = zfs_prop_to_name(prop);
- const char *valname;
- char setpoint[MAXPATHLEN];
- uint64_t curval;
- int error;
-
- error = dsl_prop_set_int(osname, propname,
- (inherit ? ZPROP_SRC_NONE : ZPROP_SRC_LOCAL), value);
-
- if (error == ENOSPC) {
- ztest_record_enospc(FTAG);
- return (error);
- }
- ASSERT0(error);
-
- VERIFY0(dsl_prop_get_integer(osname, propname, &curval, setpoint));
-
- if (ztest_opts.zo_verbose >= 6) {
- VERIFY(zfs_prop_index_to_string(prop, curval, &valname) == 0);
- (void) printf("%s %s = %s at '%s'\n",
- osname, propname, valname, setpoint);
- }
-
- return (error);
-}
-
-static int
-ztest_spa_prop_set_uint64(zpool_prop_t prop, uint64_t value)
-{
- spa_t *spa = ztest_spa;
- nvlist_t *props = NULL;
- int error;
-
- VERIFY(nvlist_alloc(&props, NV_UNIQUE_NAME, 0) == 0);
- VERIFY(nvlist_add_uint64(props, zpool_prop_to_name(prop), value) == 0);
-
- error = spa_prop_set(spa, props);
-
- nvlist_free(props);
-
- if (error == ENOSPC) {
- ztest_record_enospc(FTAG);
- return (error);
- }
- ASSERT0(error);
-
- return (error);
-}
-
-static void
-ztest_rll_init(rll_t *rll)
-{
- rll->rll_writer = NULL;
- rll->rll_readers = 0;
- mutex_init(&rll->rll_lock, NULL, USYNC_THREAD, NULL);
- cv_init(&rll->rll_cv, NULL, USYNC_THREAD, NULL);
-}
-
-static void
-ztest_rll_destroy(rll_t *rll)
-{
- ASSERT(rll->rll_writer == NULL);
- ASSERT(rll->rll_readers == 0);
- mutex_destroy(&rll->rll_lock);
- cv_destroy(&rll->rll_cv);
-}
-
-static void
-ztest_rll_lock(rll_t *rll, rl_type_t type)
-{
- mutex_enter(&rll->rll_lock);
-
- if (type == RL_READER) {
- while (rll->rll_writer != NULL)
- cv_wait(&rll->rll_cv, &rll->rll_lock);
- rll->rll_readers++;
- } else {
- while (rll->rll_writer != NULL || rll->rll_readers)
- cv_wait(&rll->rll_cv, &rll->rll_lock);
- rll->rll_writer = curthread;
- }
-
- mutex_exit(&rll->rll_lock);
-}
-
-static void
-ztest_rll_unlock(rll_t *rll)
-{
- mutex_enter(&rll->rll_lock);
-
- if (rll->rll_writer) {
- ASSERT(rll->rll_readers == 0);
- rll->rll_writer = NULL;
- } else {
- ASSERT(rll->rll_readers != 0);
- ASSERT(rll->rll_writer == NULL);
- rll->rll_readers--;
- }
-
- if (rll->rll_writer == NULL && rll->rll_readers == 0)
- cv_broadcast(&rll->rll_cv);
-
- mutex_exit(&rll->rll_lock);
-}
-
-static void
-ztest_object_lock(ztest_ds_t *zd, uint64_t object, rl_type_t type)
-{
- rll_t *rll = &zd->zd_object_lock[object & (ZTEST_OBJECT_LOCKS - 1)];
-
- ztest_rll_lock(rll, type);
-}
-
-static void
-ztest_object_unlock(ztest_ds_t *zd, uint64_t object)
-{
- rll_t *rll = &zd->zd_object_lock[object & (ZTEST_OBJECT_LOCKS - 1)];
-
- ztest_rll_unlock(rll);
-}
-
-static rl_t *
-ztest_range_lock(ztest_ds_t *zd, uint64_t object, uint64_t offset,
- uint64_t size, rl_type_t type)
-{
- uint64_t hash = object ^ (offset % (ZTEST_RANGE_LOCKS + 1));
- rll_t *rll = &zd->zd_range_lock[hash & (ZTEST_RANGE_LOCKS - 1)];
- rl_t *rl;
-
- rl = umem_alloc(sizeof (*rl), UMEM_NOFAIL);
- rl->rl_object = object;
- rl->rl_offset = offset;
- rl->rl_size = size;
- rl->rl_lock = rll;
-
- ztest_rll_lock(rll, type);
-
- return (rl);
-}
-
-static void
-ztest_range_unlock(rl_t *rl)
-{
- rll_t *rll = rl->rl_lock;
-
- ztest_rll_unlock(rll);
-
- umem_free(rl, sizeof (*rl));
-}
-
-static void
-ztest_zd_init(ztest_ds_t *zd, ztest_shared_ds_t *szd, objset_t *os)
-{
- zd->zd_os = os;
- zd->zd_zilog = dmu_objset_zil(os);
- zd->zd_shared = szd;
- dmu_objset_name(os, zd->zd_name);
-
- if (zd->zd_shared != NULL)
- zd->zd_shared->zd_seq = 0;
-
- rw_init(&zd->zd_zilog_lock, NULL, USYNC_THREAD, NULL);
- mutex_init(&zd->zd_dirobj_lock, NULL, USYNC_THREAD, NULL);
-
- for (int l = 0; l < ZTEST_OBJECT_LOCKS; l++)
- ztest_rll_init(&zd->zd_object_lock[l]);
-
- for (int l = 0; l < ZTEST_RANGE_LOCKS; l++)
- ztest_rll_init(&zd->zd_range_lock[l]);
-}
-
-static void
-ztest_zd_fini(ztest_ds_t *zd)
-{
- mutex_destroy(&zd->zd_dirobj_lock);
-
- for (int l = 0; l < ZTEST_OBJECT_LOCKS; l++)
- ztest_rll_destroy(&zd->zd_object_lock[l]);
-
- for (int l = 0; l < ZTEST_RANGE_LOCKS; l++)
- ztest_rll_destroy(&zd->zd_range_lock[l]);
-}
-
-#define TXG_MIGHTWAIT (ztest_random(10) == 0 ? TXG_NOWAIT : TXG_WAIT)
-
-static uint64_t
-ztest_tx_assign(dmu_tx_t *tx, uint64_t txg_how, const char *tag)
-{
- uint64_t txg;
- int error;
-
- /*
- * Attempt to assign tx to some transaction group.
- */
- error = dmu_tx_assign(tx, txg_how);
- if (error) {
- if (error == ERESTART) {
- ASSERT(txg_how == TXG_NOWAIT);
- dmu_tx_wait(tx);
- } else {
- ASSERT3U(error, ==, ENOSPC);
- ztest_record_enospc(tag);
- }
- dmu_tx_abort(tx);
- return (0);
- }
- txg = dmu_tx_get_txg(tx);
- ASSERT(txg != 0);
- return (txg);
-}
-
-static void
-ztest_pattern_set(void *buf, uint64_t size, uint64_t value)
-{
- uint64_t *ip = buf;
- uint64_t *ip_end = (uint64_t *)((uintptr_t)buf + (uintptr_t)size);
-
- while (ip < ip_end)
- *ip++ = value;
-}
-
-static boolean_t
-ztest_pattern_match(void *buf, uint64_t size, uint64_t value)
-{
- uint64_t *ip = buf;
- uint64_t *ip_end = (uint64_t *)((uintptr_t)buf + (uintptr_t)size);
- uint64_t diff = 0;
-
- while (ip < ip_end)
- diff |= (value - *ip++);
-
- return (diff == 0);
-}
-
-static void
-ztest_bt_generate(ztest_block_tag_t *bt, objset_t *os, uint64_t object,
- uint64_t dnodesize, uint64_t offset, uint64_t gen, uint64_t txg,
- uint64_t crtxg)
-{
- bt->bt_magic = BT_MAGIC;
- bt->bt_objset = dmu_objset_id(os);
- bt->bt_object = object;
- bt->bt_dnodesize = dnodesize;
- bt->bt_offset = offset;
- bt->bt_gen = gen;
- bt->bt_txg = txg;
- bt->bt_crtxg = crtxg;
-}
-
-static void
-ztest_bt_verify(ztest_block_tag_t *bt, objset_t *os, uint64_t object,
- uint64_t dnodesize, uint64_t offset, uint64_t gen, uint64_t txg,
- uint64_t crtxg)
-{
- ASSERT3U(bt->bt_magic, ==, BT_MAGIC);
- ASSERT3U(bt->bt_objset, ==, dmu_objset_id(os));
- ASSERT3U(bt->bt_object, ==, object);
- ASSERT3U(bt->bt_dnodesize, ==, dnodesize);
- ASSERT3U(bt->bt_offset, ==, offset);
- ASSERT3U(bt->bt_gen, <=, gen);
- ASSERT3U(bt->bt_txg, <=, txg);
- ASSERT3U(bt->bt_crtxg, ==, crtxg);
-}
-
-static ztest_block_tag_t *
-ztest_bt_bonus(dmu_buf_t *db)
-{
- dmu_object_info_t doi;
- ztest_block_tag_t *bt;
-
- dmu_object_info_from_db(db, &doi);
- ASSERT3U(doi.doi_bonus_size, <=, db->db_size);
- ASSERT3U(doi.doi_bonus_size, >=, sizeof (*bt));
- bt = (void *)((char *)db->db_data + doi.doi_bonus_size - sizeof (*bt));
-
- return (bt);
-}
-
-/*
- * Generate a token to fill up unused bonus buffer space. Try to make
- * it unique to the object, generation, and offset to verify that data
- * is not getting overwritten by data from other dnodes.
- */
-#define ZTEST_BONUS_FILL_TOKEN(obj, ds, gen, offset) \
- (((ds) << 48) | ((gen) << 32) | ((obj) << 8) | (offset))
-
-/*
- * Fill up the unused bonus buffer region before the block tag with a
- * verifiable pattern. Filling the whole bonus area with non-zero data
- * helps ensure that all dnode traversal code properly skips the
- * interior regions of large dnodes.
- */
-void
-ztest_fill_unused_bonus(dmu_buf_t *db, void *end, uint64_t obj,
- objset_t *os, uint64_t gen)
-{
- uint64_t *bonusp;
-
- ASSERT(IS_P2ALIGNED((char *)end - (char *)db->db_data, 8));
-
- for (bonusp = db->db_data; bonusp < (uint64_t *)end; bonusp++) {
- uint64_t token = ZTEST_BONUS_FILL_TOKEN(obj, dmu_objset_id(os),
- gen, bonusp - (uint64_t *)db->db_data);
- *bonusp = token;
- }
-}
-
-/*
- * Verify that the unused area of a bonus buffer is filled with the
- * expected tokens.
- */
-void
-ztest_verify_unused_bonus(dmu_buf_t *db, void *end, uint64_t obj,
- objset_t *os, uint64_t gen)
-{
- uint64_t *bonusp;
-
- for (bonusp = db->db_data; bonusp < (uint64_t *)end; bonusp++) {
- uint64_t token = ZTEST_BONUS_FILL_TOKEN(obj, dmu_objset_id(os),
- gen, bonusp - (uint64_t *)db->db_data);
- VERIFY3U(*bonusp, ==, token);
- }
-}
-
-/*
- * ZIL logging ops
- */
-
-#define lrz_type lr_mode
-#define lrz_blocksize lr_uid
-#define lrz_ibshift lr_gid
-#define lrz_bonustype lr_rdev
-#define lrz_dnodesize lr_crtime[1]
-
-static void
-ztest_log_create(ztest_ds_t *zd, dmu_tx_t *tx, lr_create_t *lr)
-{
- char *name = (void *)(lr + 1); /* name follows lr */
- size_t namesize = strlen(name) + 1;
- itx_t *itx;
-
- if (zil_replaying(zd->zd_zilog, tx))
- return;
-
- itx = zil_itx_create(TX_CREATE, sizeof (*lr) + namesize);
- bcopy(&lr->lr_common + 1, &itx->itx_lr + 1,
- sizeof (*lr) + namesize - sizeof (lr_t));
-
- zil_itx_assign(zd->zd_zilog, itx, tx);
-}
-
-static void
-ztest_log_remove(ztest_ds_t *zd, dmu_tx_t *tx, lr_remove_t *lr, uint64_t object)
-{
- char *name = (void *)(lr + 1); /* name follows lr */
- size_t namesize = strlen(name) + 1;
- itx_t *itx;
-
- if (zil_replaying(zd->zd_zilog, tx))
- return;
-
- itx = zil_itx_create(TX_REMOVE, sizeof (*lr) + namesize);
- bcopy(&lr->lr_common + 1, &itx->itx_lr + 1,
- sizeof (*lr) + namesize - sizeof (lr_t));
-
- itx->itx_oid = object;
- zil_itx_assign(zd->zd_zilog, itx, tx);
-}
-
-static void
-ztest_log_write(ztest_ds_t *zd, dmu_tx_t *tx, lr_write_t *lr)
-{
- itx_t *itx;
- itx_wr_state_t write_state = ztest_random(WR_NUM_STATES);
-
- if (zil_replaying(zd->zd_zilog, tx))
- return;
-
- if (lr->lr_length > zil_max_log_data(zd->zd_zilog))
- write_state = WR_INDIRECT;
-
- itx = zil_itx_create(TX_WRITE,
- sizeof (*lr) + (write_state == WR_COPIED ? lr->lr_length : 0));
-
- if (write_state == WR_COPIED &&
- dmu_read(zd->zd_os, lr->lr_foid, lr->lr_offset, lr->lr_length,
- ((lr_write_t *)&itx->itx_lr) + 1, DMU_READ_NO_PREFETCH) != 0) {
- zil_itx_destroy(itx);
- itx = zil_itx_create(TX_WRITE, sizeof (*lr));
- write_state = WR_NEED_COPY;
- }
- itx->itx_private = zd;
- itx->itx_wr_state = write_state;
- itx->itx_sync = (ztest_random(8) == 0);
-
- bcopy(&lr->lr_common + 1, &itx->itx_lr + 1,
- sizeof (*lr) - sizeof (lr_t));
-
- zil_itx_assign(zd->zd_zilog, itx, tx);
-}
-
-static void
-ztest_log_truncate(ztest_ds_t *zd, dmu_tx_t *tx, lr_truncate_t *lr)
-{
- itx_t *itx;
-
- if (zil_replaying(zd->zd_zilog, tx))
- return;
-
- itx = zil_itx_create(TX_TRUNCATE, sizeof (*lr));
- bcopy(&lr->lr_common + 1, &itx->itx_lr + 1,
- sizeof (*lr) - sizeof (lr_t));
-
- itx->itx_sync = B_FALSE;
- zil_itx_assign(zd->zd_zilog, itx, tx);
-}
-
-static void
-ztest_log_setattr(ztest_ds_t *zd, dmu_tx_t *tx, lr_setattr_t *lr)
-{
- itx_t *itx;
-
- if (zil_replaying(zd->zd_zilog, tx))
- return;
-
- itx = zil_itx_create(TX_SETATTR, sizeof (*lr));
- bcopy(&lr->lr_common + 1, &itx->itx_lr + 1,
- sizeof (*lr) - sizeof (lr_t));
-
- itx->itx_sync = B_FALSE;
- zil_itx_assign(zd->zd_zilog, itx, tx);
-}
-
-/*
- * ZIL replay ops
- */
-static int
-ztest_replay_create(void *arg1, void *arg2, boolean_t byteswap)
-{
- ztest_ds_t *zd = arg1;
- lr_create_t *lr = arg2;
- char *name = (void *)(lr + 1); /* name follows lr */
- objset_t *os = zd->zd_os;
- ztest_block_tag_t *bbt;
- dmu_buf_t *db;
- dmu_tx_t *tx;
- uint64_t txg;
- int error = 0;
- int bonuslen;
-
- if (byteswap)
- byteswap_uint64_array(lr, sizeof (*lr));
-
- ASSERT(lr->lr_doid == ZTEST_DIROBJ);
- ASSERT(name[0] != '\0');
-
- tx = dmu_tx_create(os);
-
- dmu_tx_hold_zap(tx, lr->lr_doid, B_TRUE, name);
-
- if (lr->lrz_type == DMU_OT_ZAP_OTHER) {
- dmu_tx_hold_zap(tx, DMU_NEW_OBJECT, B_TRUE, NULL);
- } else {
- dmu_tx_hold_bonus(tx, DMU_NEW_OBJECT);
- }
-
- txg = ztest_tx_assign(tx, TXG_WAIT, FTAG);
- if (txg == 0)
- return (ENOSPC);
-
- ASSERT(dmu_objset_zil(os)->zl_replay == !!lr->lr_foid);
- bonuslen = DN_BONUS_SIZE(lr->lrz_dnodesize);
-
- if (lr->lrz_type == DMU_OT_ZAP_OTHER) {
- if (lr->lr_foid == 0) {
- lr->lr_foid = zap_create_dnsize(os,
- lr->lrz_type, lr->lrz_bonustype,
- bonuslen, lr->lrz_dnodesize, tx);
- } else {
- error = zap_create_claim_dnsize(os, lr->lr_foid,
- lr->lrz_type, lr->lrz_bonustype,
- bonuslen, lr->lrz_dnodesize, tx);
- }
- } else {
- if (lr->lr_foid == 0) {
- lr->lr_foid = dmu_object_alloc_dnsize(os,
- lr->lrz_type, 0, lr->lrz_bonustype,
- bonuslen, lr->lrz_dnodesize, tx);
- } else {
- error = dmu_object_claim_dnsize(os, lr->lr_foid,
- lr->lrz_type, 0, lr->lrz_bonustype,
- bonuslen, lr->lrz_dnodesize, tx);
- }
- }
-
- if (error) {
- ASSERT3U(error, ==, EEXIST);
- ASSERT(zd->zd_zilog->zl_replay);
- dmu_tx_commit(tx);
- return (error);
- }
-
- ASSERT(lr->lr_foid != 0);
-
- if (lr->lrz_type != DMU_OT_ZAP_OTHER)
- VERIFY3U(0, ==, dmu_object_set_blocksize(os, lr->lr_foid,
- lr->lrz_blocksize, lr->lrz_ibshift, tx));
-
- VERIFY3U(0, ==, dmu_bonus_hold(os, lr->lr_foid, FTAG, &db));
- bbt = ztest_bt_bonus(db);
- dmu_buf_will_dirty(db, tx);
- ztest_bt_generate(bbt, os, lr->lr_foid, lr->lrz_dnodesize, -1ULL,
- lr->lr_gen, txg, txg);
- ztest_fill_unused_bonus(db, bbt, lr->lr_foid, os, lr->lr_gen);
- dmu_buf_rele(db, FTAG);
-
- VERIFY3U(0, ==, zap_add(os, lr->lr_doid, name, sizeof (uint64_t), 1,
- &lr->lr_foid, tx));
-
- (void) ztest_log_create(zd, tx, lr);
-
- dmu_tx_commit(tx);
-
- return (0);
-}
-
-static int
-ztest_replay_remove(void *arg1, void *arg2, boolean_t byteswap)
-{
- ztest_ds_t *zd = arg1;
- lr_remove_t *lr = arg2;
- char *name = (void *)(lr + 1); /* name follows lr */
- objset_t *os = zd->zd_os;
- dmu_object_info_t doi;
- dmu_tx_t *tx;
- uint64_t object, txg;
-
- if (byteswap)
- byteswap_uint64_array(lr, sizeof (*lr));
-
- ASSERT(lr->lr_doid == ZTEST_DIROBJ);
- ASSERT(name[0] != '\0');
-
- VERIFY3U(0, ==,
- zap_lookup(os, lr->lr_doid, name, sizeof (object), 1, &object));
- ASSERT(object != 0);
-
- ztest_object_lock(zd, object, RL_WRITER);
-
- VERIFY3U(0, ==, dmu_object_info(os, object, &doi));
-
- tx = dmu_tx_create(os);
-
- dmu_tx_hold_zap(tx, lr->lr_doid, B_FALSE, name);
- dmu_tx_hold_free(tx, object, 0, DMU_OBJECT_END);
-
- txg = ztest_tx_assign(tx, TXG_WAIT, FTAG);
- if (txg == 0) {
- ztest_object_unlock(zd, object);
- return (ENOSPC);
- }
-
- if (doi.doi_type == DMU_OT_ZAP_OTHER) {
- VERIFY3U(0, ==, zap_destroy(os, object, tx));
- } else {
- VERIFY3U(0, ==, dmu_object_free(os, object, tx));
- }
-
- VERIFY3U(0, ==, zap_remove(os, lr->lr_doid, name, tx));
-
- (void) ztest_log_remove(zd, tx, lr, object);
-
- dmu_tx_commit(tx);
-
- ztest_object_unlock(zd, object);
-
- return (0);
-}
-
-static int
-ztest_replay_write(void *arg1, void *arg2, boolean_t byteswap)
-{
- ztest_ds_t *zd = arg1;
- lr_write_t *lr = arg2;
- objset_t *os = zd->zd_os;
- void *data = lr + 1; /* data follows lr */
- uint64_t offset, length;
- ztest_block_tag_t *bt = data;
- ztest_block_tag_t *bbt;
- uint64_t gen, txg, lrtxg, crtxg;
- dmu_object_info_t doi;
- dmu_tx_t *tx;
- dmu_buf_t *db;
- arc_buf_t *abuf = NULL;
- rl_t *rl;
-
- if (byteswap)
- byteswap_uint64_array(lr, sizeof (*lr));
-
- offset = lr->lr_offset;
- length = lr->lr_length;
-
- /* If it's a dmu_sync() block, write the whole block */
- if (lr->lr_common.lrc_reclen == sizeof (lr_write_t)) {
- uint64_t blocksize = BP_GET_LSIZE(&lr->lr_blkptr);
- if (length < blocksize) {
- offset -= offset % blocksize;
- length = blocksize;
- }
- }
-
- if (bt->bt_magic == BSWAP_64(BT_MAGIC))
- byteswap_uint64_array(bt, sizeof (*bt));
-
- if (bt->bt_magic != BT_MAGIC)
- bt = NULL;
-
- ztest_object_lock(zd, lr->lr_foid, RL_READER);
- rl = ztest_range_lock(zd, lr->lr_foid, offset, length, RL_WRITER);
-
- VERIFY3U(0, ==, dmu_bonus_hold(os, lr->lr_foid, FTAG, &db));
-
- dmu_object_info_from_db(db, &doi);
-
- bbt = ztest_bt_bonus(db);
- ASSERT3U(bbt->bt_magic, ==, BT_MAGIC);
- gen = bbt->bt_gen;
- crtxg = bbt->bt_crtxg;
- lrtxg = lr->lr_common.lrc_txg;
-
- tx = dmu_tx_create(os);
-
- dmu_tx_hold_write(tx, lr->lr_foid, offset, length);
-
- if (ztest_random(8) == 0 && length == doi.doi_data_block_size &&
- P2PHASE(offset, length) == 0)
- abuf = dmu_request_arcbuf(db, length);
-
- txg = ztest_tx_assign(tx, TXG_WAIT, FTAG);
- if (txg == 0) {
- if (abuf != NULL)
- dmu_return_arcbuf(abuf);
- dmu_buf_rele(db, FTAG);
- ztest_range_unlock(rl);
- ztest_object_unlock(zd, lr->lr_foid);
- return (ENOSPC);
- }
-
- if (bt != NULL) {
- /*
- * Usually, verify the old data before writing new data --
- * but not always, because we also want to verify correct
- * behavior when the data was not recently read into cache.
- */
- ASSERT(offset % doi.doi_data_block_size == 0);
- if (ztest_random(4) != 0) {
- int prefetch = ztest_random(2) ?
- DMU_READ_PREFETCH : DMU_READ_NO_PREFETCH;
- ztest_block_tag_t rbt;
-
- VERIFY(dmu_read(os, lr->lr_foid, offset,
- sizeof (rbt), &rbt, prefetch) == 0);
- if (rbt.bt_magic == BT_MAGIC) {
- ztest_bt_verify(&rbt, os, lr->lr_foid, 0,
- offset, gen, txg, crtxg);
- }
- }
-
- /*
- * Writes can appear to be newer than the bonus buffer because
- * the ztest_get_data() callback does a dmu_read() of the
- * open-context data, which may be different than the data
- * as it was when the write was generated.
- */
- if (zd->zd_zilog->zl_replay) {
- ztest_bt_verify(bt, os, lr->lr_foid, 0, offset,
- MAX(gen, bt->bt_gen), MAX(txg, lrtxg),
- bt->bt_crtxg);
- }
-
- /*
- * Set the bt's gen/txg to the bonus buffer's gen/txg
- * so that all of the usual ASSERTs will work.
- */
- ztest_bt_generate(bt, os, lr->lr_foid, 0, offset, gen, txg,
- crtxg);
- }
-
- if (abuf == NULL) {
- dmu_write(os, lr->lr_foid, offset, length, data, tx);
- } else {
- bcopy(data, abuf->b_data, length);
- dmu_assign_arcbuf(db, offset, abuf, tx);
- }
-
- (void) ztest_log_write(zd, tx, lr);
-
- dmu_buf_rele(db, FTAG);
-
- dmu_tx_commit(tx);
-
- ztest_range_unlock(rl);
- ztest_object_unlock(zd, lr->lr_foid);
-
- return (0);
-}
-
-static int
-ztest_replay_truncate(void *arg1, void *arg2, boolean_t byteswap)
-{
- ztest_ds_t *zd = arg1;
- lr_truncate_t *lr = arg2;
- objset_t *os = zd->zd_os;
- dmu_tx_t *tx;
- uint64_t txg;
- rl_t *rl;
-
- if (byteswap)
- byteswap_uint64_array(lr, sizeof (*lr));
-
- ztest_object_lock(zd, lr->lr_foid, RL_READER);
- rl = ztest_range_lock(zd, lr->lr_foid, lr->lr_offset, lr->lr_length,
- RL_WRITER);
-
- tx = dmu_tx_create(os);
-
- dmu_tx_hold_free(tx, lr->lr_foid, lr->lr_offset, lr->lr_length);
-
- txg = ztest_tx_assign(tx, TXG_WAIT, FTAG);
- if (txg == 0) {
- ztest_range_unlock(rl);
- ztest_object_unlock(zd, lr->lr_foid);
- return (ENOSPC);
- }
-
- VERIFY(dmu_free_range(os, lr->lr_foid, lr->lr_offset,
- lr->lr_length, tx) == 0);
-
- (void) ztest_log_truncate(zd, tx, lr);
-
- dmu_tx_commit(tx);
-
- ztest_range_unlock(rl);
- ztest_object_unlock(zd, lr->lr_foid);
-
- return (0);
-}
-
-static int
-ztest_replay_setattr(void *arg1, void *arg2, boolean_t byteswap)
-{
- ztest_ds_t *zd = arg1;
- lr_setattr_t *lr = arg2;
- objset_t *os = zd->zd_os;
- dmu_tx_t *tx;
- dmu_buf_t *db;
- ztest_block_tag_t *bbt;
- uint64_t txg, lrtxg, crtxg, dnodesize;
-
- if (byteswap)
- byteswap_uint64_array(lr, sizeof (*lr));
-
- ztest_object_lock(zd, lr->lr_foid, RL_WRITER);
-
- VERIFY3U(0, ==, dmu_bonus_hold(os, lr->lr_foid, FTAG, &db));
-
- tx = dmu_tx_create(os);
- dmu_tx_hold_bonus(tx, lr->lr_foid);
-
- txg = ztest_tx_assign(tx, TXG_WAIT, FTAG);
- if (txg == 0) {
- dmu_buf_rele(db, FTAG);
- ztest_object_unlock(zd, lr->lr_foid);
- return (ENOSPC);
- }
-
- bbt = ztest_bt_bonus(db);
- ASSERT3U(bbt->bt_magic, ==, BT_MAGIC);
- crtxg = bbt->bt_crtxg;
- lrtxg = lr->lr_common.lrc_txg;
- dnodesize = bbt->bt_dnodesize;
-
- if (zd->zd_zilog->zl_replay) {
- ASSERT(lr->lr_size != 0);
- ASSERT(lr->lr_mode != 0);
- ASSERT(lrtxg != 0);
- } else {
- /*
- * Randomly change the size and increment the generation.
- */
- lr->lr_size = (ztest_random(db->db_size / sizeof (*bbt)) + 1) *
- sizeof (*bbt);
- lr->lr_mode = bbt->bt_gen + 1;
- ASSERT(lrtxg == 0);
- }
-
- /*
- * Verify that the current bonus buffer is not newer than our txg.
- */
- ztest_bt_verify(bbt, os, lr->lr_foid, dnodesize, -1ULL, lr->lr_mode,
- MAX(txg, lrtxg), crtxg);
-
- dmu_buf_will_dirty(db, tx);
-
- ASSERT3U(lr->lr_size, >=, sizeof (*bbt));
- ASSERT3U(lr->lr_size, <=, db->db_size);
- VERIFY0(dmu_set_bonus(db, lr->lr_size, tx));
- bbt = ztest_bt_bonus(db);
-
- ztest_bt_generate(bbt, os, lr->lr_foid, dnodesize, -1ULL, lr->lr_mode,
- txg, crtxg);
- ztest_fill_unused_bonus(db, bbt, lr->lr_foid, os, bbt->bt_gen);
-
- dmu_buf_rele(db, FTAG);
-
- (void) ztest_log_setattr(zd, tx, lr);
-
- dmu_tx_commit(tx);
-
- ztest_object_unlock(zd, lr->lr_foid);
-
- return (0);
-}
-
-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 */
- ztest_replay_write, /* TX_WRITE */
- ztest_replay_truncate, /* TX_TRUNCATE */
- ztest_replay_setattr, /* TX_SETATTR */
- NULL, /* TX_ACL */
- NULL, /* TX_CREATE_ACL */
- NULL, /* TX_CREATE_ATTR */
- NULL, /* TX_CREATE_ACL_ATTR */
- NULL, /* TX_MKDIR_ACL */
- NULL, /* TX_MKDIR_ATTR */
- NULL, /* TX_MKDIR_ACL_ATTR */
- NULL, /* TX_WRITE2 */
-};
-
-/*
- * ZIL get_data callbacks
- */
-
-/* ARGSUSED */
-static void
-ztest_get_done(zgd_t *zgd, int error)
-{
- ztest_ds_t *zd = zgd->zgd_private;
- uint64_t object = ((rl_t *)zgd->zgd_lr)->rl_object;
-
- if (zgd->zgd_db)
- dmu_buf_rele(zgd->zgd_db, zgd);
-
- ztest_range_unlock((rl_t *)zgd->zgd_lr);
- ztest_object_unlock(zd, object);
-
- umem_free(zgd, sizeof (*zgd));
-}
-
-static int
-ztest_get_data(void *arg, lr_write_t *lr, char *buf, struct lwb *lwb,
- zio_t *zio)
-{
- ztest_ds_t *zd = arg;
- objset_t *os = zd->zd_os;
- uint64_t object = lr->lr_foid;
- uint64_t offset = lr->lr_offset;
- uint64_t size = lr->lr_length;
- uint64_t txg = lr->lr_common.lrc_txg;
- uint64_t crtxg;
- dmu_object_info_t doi;
- dmu_buf_t *db;
- zgd_t *zgd;
- int error;
-
- ASSERT3P(lwb, !=, NULL);
- ASSERT3P(zio, !=, NULL);
- ASSERT3U(size, !=, 0);
-
- ztest_object_lock(zd, object, RL_READER);
- error = dmu_bonus_hold(os, object, FTAG, &db);
- if (error) {
- ztest_object_unlock(zd, object);
- return (error);
- }
-
- crtxg = ztest_bt_bonus(db)->bt_crtxg;
-
- if (crtxg == 0 || crtxg > txg) {
- dmu_buf_rele(db, FTAG);
- ztest_object_unlock(zd, object);
- return (ENOENT);
- }
-
- dmu_object_info_from_db(db, &doi);
- dmu_buf_rele(db, FTAG);
- db = NULL;
-
- zgd = umem_zalloc(sizeof (*zgd), UMEM_NOFAIL);
- zgd->zgd_lwb = lwb;
- zgd->zgd_private = zd;
-
- if (buf != NULL) { /* immediate write */
- zgd->zgd_lr = (struct locked_range *)ztest_range_lock(zd,
- object, offset, size, RL_READER);
-
- error = dmu_read(os, object, offset, size, buf,
- DMU_READ_NO_PREFETCH);
- ASSERT(error == 0);
- } else {
- size = doi.doi_data_block_size;
- if (ISP2(size)) {
- offset = P2ALIGN(offset, size);
- } else {
- ASSERT(offset < size);
- offset = 0;
- }
-
- zgd->zgd_lr = (struct locked_range *)ztest_range_lock(zd,
- object, offset, size, RL_READER);
-
- error = dmu_buf_hold(os, object, offset, zgd, &db,
- DMU_READ_NO_PREFETCH);
-
- if (error == 0) {
- blkptr_t *bp = &lr->lr_blkptr;
-
- zgd->zgd_db = db;
- zgd->zgd_bp = bp;
-
- ASSERT(db->db_offset == offset);
- ASSERT(db->db_size == size);
-
- error = dmu_sync(zio, lr->lr_common.lrc_txg,
- ztest_get_done, zgd);
-
- if (error == 0)
- return (0);
- }
- }
-
- ztest_get_done(zgd, error);
-
- return (error);
-}
-
-static void *
-ztest_lr_alloc(size_t lrsize, char *name)
-{
- char *lr;
- size_t namesize = name ? strlen(name) + 1 : 0;
-
- lr = umem_zalloc(lrsize + namesize, UMEM_NOFAIL);
-
- if (name)
- bcopy(name, lr + lrsize, namesize);
-
- return (lr);
-}
-
-void
-ztest_lr_free(void *lr, size_t lrsize, char *name)
-{
- size_t namesize = name ? strlen(name) + 1 : 0;
-
- umem_free(lr, lrsize + namesize);
-}
-
-/*
- * Lookup a bunch of objects. Returns the number of objects not found.
- */
-static int
-ztest_lookup(ztest_ds_t *zd, ztest_od_t *od, int count)
-{
- int missing = 0;
- int error;
-
- ASSERT(MUTEX_HELD(&zd->zd_dirobj_lock));
-
- for (int i = 0; i < count; i++, od++) {
- od->od_object = 0;
- error = zap_lookup(zd->zd_os, od->od_dir, od->od_name,
- sizeof (uint64_t), 1, &od->od_object);
- if (error) {
- ASSERT(error == ENOENT);
- ASSERT(od->od_object == 0);
- missing++;
- } else {
- dmu_buf_t *db;
- ztest_block_tag_t *bbt;
- dmu_object_info_t doi;
-
- ASSERT(od->od_object != 0);
- ASSERT(missing == 0); /* there should be no gaps */
-
- ztest_object_lock(zd, od->od_object, RL_READER);
- VERIFY3U(0, ==, dmu_bonus_hold(zd->zd_os,
- od->od_object, FTAG, &db));
- dmu_object_info_from_db(db, &doi);
- bbt = ztest_bt_bonus(db);
- ASSERT3U(bbt->bt_magic, ==, BT_MAGIC);
- od->od_type = doi.doi_type;
- od->od_blocksize = doi.doi_data_block_size;
- od->od_gen = bbt->bt_gen;
- dmu_buf_rele(db, FTAG);
- ztest_object_unlock(zd, od->od_object);
- }
- }
-
- return (missing);
-}
-
-static int
-ztest_create(ztest_ds_t *zd, ztest_od_t *od, int count)
-{
- int missing = 0;
-
- ASSERT(MUTEX_HELD(&zd->zd_dirobj_lock));
-
- for (int i = 0; i < count; i++, od++) {
- if (missing) {
- od->od_object = 0;
- missing++;
- continue;
- }
-
- lr_create_t *lr = ztest_lr_alloc(sizeof (*lr), od->od_name);
-
- lr->lr_doid = od->od_dir;
- lr->lr_foid = 0; /* 0 to allocate, > 0 to claim */
- lr->lrz_type = od->od_crtype;
- lr->lrz_blocksize = od->od_crblocksize;
- lr->lrz_ibshift = ztest_random_ibshift();
- lr->lrz_bonustype = DMU_OT_UINT64_OTHER;
- lr->lrz_dnodesize = od->od_crdnodesize;
- lr->lr_gen = od->od_crgen;
- lr->lr_crtime[0] = time(NULL);
-
- if (ztest_replay_create(zd, lr, B_FALSE) != 0) {
- ASSERT(missing == 0);
- od->od_object = 0;
- missing++;
- } else {
- od->od_object = lr->lr_foid;
- od->od_type = od->od_crtype;
- od->od_blocksize = od->od_crblocksize;
- od->od_gen = od->od_crgen;
- ASSERT(od->od_object != 0);
- }
-
- ztest_lr_free(lr, sizeof (*lr), od->od_name);
- }
-
- return (missing);
-}
-
-static int
-ztest_remove(ztest_ds_t *zd, ztest_od_t *od, int count)
-{
- int missing = 0;
- int error;
-
- ASSERT(MUTEX_HELD(&zd->zd_dirobj_lock));
-
- od += count - 1;
-
- for (int i = count - 1; i >= 0; i--, od--) {
- if (missing) {
- missing++;
- continue;
- }
-
- /*
- * No object was found.
- */
- if (od->od_object == 0)
- continue;
-
- lr_remove_t *lr = ztest_lr_alloc(sizeof (*lr), od->od_name);
-
- lr->lr_doid = od->od_dir;
-
- if ((error = ztest_replay_remove(zd, lr, B_FALSE)) != 0) {
- ASSERT3U(error, ==, ENOSPC);
- missing++;
- } else {
- od->od_object = 0;
- }
- ztest_lr_free(lr, sizeof (*lr), od->od_name);
- }
-
- return (missing);
-}
-
-static int
-ztest_write(ztest_ds_t *zd, uint64_t object, uint64_t offset, uint64_t size,
- void *data)
-{
- lr_write_t *lr;
- int error;
-
- lr = ztest_lr_alloc(sizeof (*lr) + size, NULL);
-
- lr->lr_foid = object;
- lr->lr_offset = offset;
- lr->lr_length = size;
- lr->lr_blkoff = 0;
- BP_ZERO(&lr->lr_blkptr);
-
- bcopy(data, lr + 1, size);
-
- error = ztest_replay_write(zd, lr, B_FALSE);
-
- ztest_lr_free(lr, sizeof (*lr) + size, NULL);
-
- return (error);
-}
-
-static int
-ztest_truncate(ztest_ds_t *zd, uint64_t object, uint64_t offset, uint64_t size)
-{
- lr_truncate_t *lr;
- int error;
-
- lr = ztest_lr_alloc(sizeof (*lr), NULL);
-
- lr->lr_foid = object;
- lr->lr_offset = offset;
- lr->lr_length = size;
-
- error = ztest_replay_truncate(zd, lr, B_FALSE);
-
- ztest_lr_free(lr, sizeof (*lr), NULL);
-
- return (error);
-}
-
-static int
-ztest_setattr(ztest_ds_t *zd, uint64_t object)
-{
- lr_setattr_t *lr;
- int error;
-
- lr = ztest_lr_alloc(sizeof (*lr), NULL);
-
- lr->lr_foid = object;
- lr->lr_size = 0;
- lr->lr_mode = 0;
-
- error = ztest_replay_setattr(zd, lr, B_FALSE);
-
- ztest_lr_free(lr, sizeof (*lr), NULL);
-
- return (error);
-}
-
-static void
-ztest_prealloc(ztest_ds_t *zd, uint64_t object, uint64_t offset, uint64_t size)
-{
- objset_t *os = zd->zd_os;
- dmu_tx_t *tx;
- uint64_t txg;
- rl_t *rl;
-
- txg_wait_synced(dmu_objset_pool(os), 0);
-
- ztest_object_lock(zd, object, RL_READER);
- rl = ztest_range_lock(zd, object, offset, size, RL_WRITER);
-
- tx = dmu_tx_create(os);
-
- dmu_tx_hold_write(tx, object, offset, size);
-
- txg = ztest_tx_assign(tx, TXG_WAIT, FTAG);
-
- if (txg != 0) {
- dmu_prealloc(os, object, offset, size, tx);
- dmu_tx_commit(tx);
- txg_wait_synced(dmu_objset_pool(os), txg);
- } else {
- (void) dmu_free_long_range(os, object, offset, size);
- }
-
- ztest_range_unlock(rl);
- ztest_object_unlock(zd, object);
-}
-
-static void
-ztest_io(ztest_ds_t *zd, uint64_t object, uint64_t offset)
-{
- int err;
- ztest_block_tag_t wbt;
- dmu_object_info_t doi;
- enum ztest_io_type io_type;
- uint64_t blocksize;
- void *data;
-
- VERIFY(dmu_object_info(zd->zd_os, object, &doi) == 0);
- blocksize = doi.doi_data_block_size;
- data = umem_alloc(blocksize, UMEM_NOFAIL);
-
- /*
- * Pick an i/o type at random, biased toward writing block tags.
- */
- io_type = ztest_random(ZTEST_IO_TYPES);
- if (ztest_random(2) == 0)
- io_type = ZTEST_IO_WRITE_TAG;
-
- rw_enter(&zd->zd_zilog_lock, RW_READER);
-
- switch (io_type) {
-
- case ZTEST_IO_WRITE_TAG:
- ztest_bt_generate(&wbt, zd->zd_os, object, doi.doi_dnodesize,
- offset, 0, 0, 0);
- (void) ztest_write(zd, object, offset, sizeof (wbt), &wbt);
- break;
-
- case ZTEST_IO_WRITE_PATTERN:
- (void) memset(data, 'a' + (object + offset) % 5, blocksize);
- if (ztest_random(2) == 0) {
- /*
- * Induce fletcher2 collisions to ensure that
- * zio_ddt_collision() detects and resolves them
- * when using fletcher2-verify for deduplication.
- */
- ((uint64_t *)data)[0] ^= 1ULL << 63;
- ((uint64_t *)data)[4] ^= 1ULL << 63;
- }
- (void) ztest_write(zd, object, offset, blocksize, data);
- break;
-
- case ZTEST_IO_WRITE_ZEROES:
- bzero(data, blocksize);
- (void) ztest_write(zd, object, offset, blocksize, data);
- break;
-
- case ZTEST_IO_TRUNCATE:
- (void) ztest_truncate(zd, object, offset, blocksize);
- break;
-
- case ZTEST_IO_SETATTR:
- (void) ztest_setattr(zd, object);
- break;
-
- case ZTEST_IO_REWRITE:
- rw_enter(&ztest_name_lock, RW_READER);
- err = ztest_dsl_prop_set_uint64(zd->zd_name,
- ZFS_PROP_CHECKSUM, spa_dedup_checksum(ztest_spa),
- B_FALSE);
- VERIFY(err == 0 || err == ENOSPC);
- err = ztest_dsl_prop_set_uint64(zd->zd_name,
- ZFS_PROP_COMPRESSION,
- ztest_random_dsl_prop(ZFS_PROP_COMPRESSION),
- B_FALSE);
- VERIFY(err == 0 || err == ENOSPC);
- rw_exit(&ztest_name_lock);
-
- VERIFY0(dmu_read(zd->zd_os, object, offset, blocksize, data,
- DMU_READ_NO_PREFETCH));
-
- (void) ztest_write(zd, object, offset, blocksize, data);
- break;
- }
-
- rw_exit(&zd->zd_zilog_lock);
-
- umem_free(data, blocksize);
-}
-
-/*
- * Initialize an object description template.
- */
-static void
-ztest_od_init(ztest_od_t *od, uint64_t id, char *tag, uint64_t index,
- dmu_object_type_t type, uint64_t blocksize, uint64_t dnodesize,
- uint64_t gen)
-{
- od->od_dir = ZTEST_DIROBJ;
- od->od_object = 0;
-
- od->od_crtype = type;
- od->od_crblocksize = blocksize ? blocksize : ztest_random_blocksize();
- od->od_crdnodesize = dnodesize ? dnodesize : ztest_random_dnodesize();
- od->od_crgen = gen;
-
- od->od_type = DMU_OT_NONE;
- od->od_blocksize = 0;
- od->od_gen = 0;
-
- (void) snprintf(od->od_name, sizeof (od->od_name), "%s(%lld)[%llu]",
- tag, (int64_t)id, index);
-}
-
-/*
- * Lookup or create the objects for a test using the od template.
- * If the objects do not all exist, or if 'remove' is specified,
- * remove any existing objects and create new ones. Otherwise,
- * use the existing objects.
- */
-static int
-ztest_object_init(ztest_ds_t *zd, ztest_od_t *od, size_t size, boolean_t remove)
-{
- int count = size / sizeof (*od);
- int rv = 0;
-
- mutex_enter(&zd->zd_dirobj_lock);
- if ((ztest_lookup(zd, od, count) != 0 || remove) &&
- (ztest_remove(zd, od, count) != 0 ||
- ztest_create(zd, od, count) != 0))
- rv = -1;
- zd->zd_od = od;
- mutex_exit(&zd->zd_dirobj_lock);
-
- return (rv);
-}
-
-/* ARGSUSED */
-void
-ztest_zil_commit(ztest_ds_t *zd, uint64_t id)
-{
- zilog_t *zilog = zd->zd_zilog;
-
- rw_enter(&zd->zd_zilog_lock, RW_READER);
-
- zil_commit(zilog, ztest_random(ZTEST_OBJECTS));
-
- /*
- * Remember the committed values in zd, which is in parent/child
- * shared memory. If we die, the next iteration of ztest_run()
- * will verify that the log really does contain this record.
- */
- mutex_enter(&zilog->zl_lock);
- ASSERT(zd->zd_shared != NULL);
- ASSERT3U(zd->zd_shared->zd_seq, <=, zilog->zl_commit_lr_seq);
- zd->zd_shared->zd_seq = zilog->zl_commit_lr_seq;
- mutex_exit(&zilog->zl_lock);
-
- rw_exit(&zd->zd_zilog_lock);
-}
-
-/*
- * This function is designed to simulate the operations that occur during a
- * mount/unmount operation. We hold the dataset across these operations in an
- * attempt to expose any implicit assumptions about ZIL management.
- */
-/* ARGSUSED */
-void
-ztest_zil_remount(ztest_ds_t *zd, uint64_t id)
-{
- objset_t *os = zd->zd_os;
-
- /*
- * We grab the zd_dirobj_lock to ensure that no other thread is
- * updating the zil (i.e. adding in-memory log records) and the
- * zd_zilog_lock to block any I/O.
- */
- mutex_enter(&zd->zd_dirobj_lock);
- rw_enter(&zd->zd_zilog_lock, RW_WRITER);
-
- /* zfsvfs_teardown() */
- zil_close(zd->zd_zilog);
-
- /* zfsvfs_setup() */
- VERIFY(zil_open(os, ztest_get_data) == zd->zd_zilog);
- zil_replay(os, zd, ztest_replay_vector);
-
- rw_exit(&zd->zd_zilog_lock);
- mutex_exit(&zd->zd_dirobj_lock);
-}
-
-/*
- * Verify that we can't destroy an active pool, create an existing pool,
- * or create a pool with a bad vdev spec.
- */
-/* ARGSUSED */
-void
-ztest_spa_create_destroy(ztest_ds_t *zd, uint64_t id)
-{
- ztest_shared_opts_t *zo = &ztest_opts;
- spa_t *spa;
- nvlist_t *nvroot;
-
- if (zo->zo_mmp_test)
- return;
-
- /*
- * Attempt to create using a bad file.
- */
- nvroot = make_vdev_root("/dev/bogus", NULL, NULL, 0, 0, NULL, 0, 0, 1);
- VERIFY3U(ENOENT, ==,
- spa_create("ztest_bad_file", nvroot, NULL, NULL));
- nvlist_free(nvroot);
-
- /*
- * Attempt to create using a bad mirror.
- */
- nvroot = make_vdev_root("/dev/bogus", NULL, NULL, 0, 0, NULL, 0, 2, 1);
- VERIFY3U(ENOENT, ==,
- spa_create("ztest_bad_mirror", nvroot, NULL, NULL));
- nvlist_free(nvroot);
-
- /*
- * Attempt to create an existing pool. It shouldn't matter
- * what's in the nvroot; we should fail with EEXIST.
- */
- rw_enter(&ztest_name_lock, RW_READER);
- nvroot = make_vdev_root("/dev/bogus", NULL, NULL, 0, 0, NULL, 0, 0, 1);
- VERIFY3U(EEXIST, ==, spa_create(zo->zo_pool, nvroot, NULL, NULL));
- nvlist_free(nvroot);
- VERIFY3U(0, ==, spa_open(zo->zo_pool, &spa, FTAG));
- VERIFY3U(EBUSY, ==, spa_destroy(zo->zo_pool));
- spa_close(spa, FTAG);
-
- rw_exit(&ztest_name_lock);
-}
-
-/*
- * Start and then stop the MMP threads to ensure the startup and shutdown code
- * works properly. Actual protection and property-related code tested via ZTS.
- */
-/* ARGSUSED */
-void
-ztest_mmp_enable_disable(ztest_ds_t *zd, uint64_t id)
-{
- ztest_shared_opts_t *zo = &ztest_opts;
- spa_t *spa = ztest_spa;
-
- if (zo->zo_mmp_test)
- return;
-
- /*
- * Since enabling MMP involves setting a property, it could not be done
- * while the pool is suspended.
- */
- if (spa_suspended(spa))
- return;
-
- spa_config_enter(spa, SCL_CONFIG, FTAG, RW_READER);
- mutex_enter(&spa->spa_props_lock);
-
- zfs_multihost_fail_intervals = 0;
-
- if (!spa_multihost(spa)) {
- spa->spa_multihost = B_TRUE;
- mmp_thread_start(spa);
- }
-
- mutex_exit(&spa->spa_props_lock);
- spa_config_exit(spa, SCL_CONFIG, FTAG);
-
- txg_wait_synced(spa_get_dsl(spa), 0);
- mmp_signal_all_threads();
- txg_wait_synced(spa_get_dsl(spa), 0);
-
- spa_config_enter(spa, SCL_CONFIG, FTAG, RW_READER);
- mutex_enter(&spa->spa_props_lock);
-
- if (spa_multihost(spa)) {
- mmp_thread_stop(spa);
- spa->spa_multihost = B_FALSE;
- }
-
- mutex_exit(&spa->spa_props_lock);
- spa_config_exit(spa, SCL_CONFIG, FTAG);
-}
-
-/* ARGSUSED */
-void
-ztest_spa_upgrade(ztest_ds_t *zd, uint64_t id)
-{
- spa_t *spa;
- uint64_t initial_version = SPA_VERSION_INITIAL;
- uint64_t version, newversion;
- nvlist_t *nvroot, *props;
- char *name;
-
- if (ztest_opts.zo_mmp_test)
- return;
-
- mutex_enter(&ztest_vdev_lock);
- name = kmem_asprintf("%s_upgrade", ztest_opts.zo_pool);
-
- /*
- * Clean up from previous runs.
- */
- (void) spa_destroy(name);
-
- nvroot = make_vdev_root(NULL, NULL, name, ztest_opts.zo_vdev_size, 0,
- NULL, ztest_opts.zo_raidz, ztest_opts.zo_mirrors, 1);
-
- /*
- * If we're configuring a RAIDZ device then make sure that the
- * the initial version is capable of supporting that feature.
- */
- switch (ztest_opts.zo_raidz_parity) {
- case 0:
- case 1:
- initial_version = SPA_VERSION_INITIAL;
- break;
- case 2:
- initial_version = SPA_VERSION_RAIDZ2;
- break;
- case 3:
- initial_version = SPA_VERSION_RAIDZ3;
- break;
- }
-
- /*
- * Create a pool with a spa version that can be upgraded. Pick
- * a value between initial_version and SPA_VERSION_BEFORE_FEATURES.
- */
- do {
- version = ztest_random_spa_version(initial_version);
- } while (version > SPA_VERSION_BEFORE_FEATURES);
-
- props = fnvlist_alloc();
- fnvlist_add_uint64(props,
- zpool_prop_to_name(ZPOOL_PROP_VERSION), version);
- VERIFY0(spa_create(name, nvroot, props, NULL));
- fnvlist_free(nvroot);
- fnvlist_free(props);
-
- VERIFY0(spa_open(name, &spa, FTAG));
- VERIFY3U(spa_version(spa), ==, version);
- newversion = ztest_random_spa_version(version + 1);
-
- if (ztest_opts.zo_verbose >= 4) {
- (void) printf("upgrading spa version from %llu to %llu\n",
- (u_longlong_t)version, (u_longlong_t)newversion);
- }
-
- spa_upgrade(spa, newversion);
- VERIFY3U(spa_version(spa), >, version);
- VERIFY3U(spa_version(spa), ==, fnvlist_lookup_uint64(spa->spa_config,
- zpool_prop_to_name(ZPOOL_PROP_VERSION)));
- spa_close(spa, FTAG);
-
- strfree(name);
- mutex_exit(&ztest_vdev_lock);
-}
-
-static void
-ztest_spa_checkpoint(spa_t *spa)
-{
- ASSERT(MUTEX_HELD(&ztest_checkpoint_lock));
-
- int error = spa_checkpoint(spa->spa_name);
-
- switch (error) {
- case 0:
- case ZFS_ERR_DEVRM_IN_PROGRESS:
- case ZFS_ERR_DISCARDING_CHECKPOINT:
- case ZFS_ERR_CHECKPOINT_EXISTS:
- break;
- case ENOSPC:
- ztest_record_enospc(FTAG);
- break;
- default:
- fatal(0, "spa_checkpoint(%s) = %d", spa->spa_name, error);
- }
-}
-
-static void
-ztest_spa_discard_checkpoint(spa_t *spa)
-{
- ASSERT(MUTEX_HELD(&ztest_checkpoint_lock));
-
- int error = spa_checkpoint_discard(spa->spa_name);
-
- switch (error) {
- case 0:
- case ZFS_ERR_DISCARDING_CHECKPOINT:
- case ZFS_ERR_NO_CHECKPOINT:
- break;
- default:
- fatal(0, "spa_discard_checkpoint(%s) = %d",
- spa->spa_name, error);
- }
-
-}
-
-/* ARGSUSED */
-void
-ztest_spa_checkpoint_create_discard(ztest_ds_t *zd, uint64_t id)
-{
- spa_t *spa = ztest_spa;
-
- mutex_enter(&ztest_checkpoint_lock);
- if (ztest_random(2) == 0) {
- ztest_spa_checkpoint(spa);
- } else {
- ztest_spa_discard_checkpoint(spa);
- }
- mutex_exit(&ztest_checkpoint_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);
-}
-
-/*
- * Find the first available hole which can be used as a top-level.
- */
-int
-find_vdev_hole(spa_t *spa)
-{
- vdev_t *rvd = spa->spa_root_vdev;
- int c;
-
- ASSERT(spa_config_held(spa, SCL_VDEV, RW_READER) == SCL_VDEV);
-
- for (c = 0; c < rvd->vdev_children; c++) {
- vdev_t *cvd = rvd->vdev_child[c];
-
- if (cvd->vdev_ishole)
- break;
- }
- return (c);
-}
-
-/*
- * Verify that vdev_add() works as expected.
- */
-/* ARGSUSED */
-void
-ztest_vdev_add_remove(ztest_ds_t *zd, uint64_t id)
-{
- ztest_shared_t *zs = ztest_shared;
- spa_t *spa = ztest_spa;
- uint64_t leaves;
- uint64_t guid;
- nvlist_t *nvroot;
- int error;
-
- if (ztest_opts.zo_mmp_test)
- return;
-
- mutex_enter(&ztest_vdev_lock);
- leaves = MAX(zs->zs_mirrors + zs->zs_splits, 1) * ztest_opts.zo_raidz;
-
- spa_config_enter(spa, SCL_VDEV, FTAG, RW_READER);
-
- ztest_shared->zs_vdev_next_leaf = find_vdev_hole(spa) * leaves;
-
- /*
- * If we have slogs then remove them 1/4 of the time.
- */
- if (spa_has_slogs(spa) && ztest_random(4) == 0) {
- metaslab_group_t *mg;
-
- /*
- * find the first real slog in log allocation class
- */
- mg = spa_log_class(spa)->mc_rotor;
- while (!mg->mg_vd->vdev_islog)
- mg = mg->mg_next;
-
- guid = mg->mg_vd->vdev_guid;
-
- spa_config_exit(spa, SCL_VDEV, FTAG);
-
- /*
- * We have to grab the zs_name_lock as writer to
- * prevent a race between removing a slog (dmu_objset_find)
- * and destroying a dataset. Removing the slog will
- * grab a reference on the dataset which may cause
- * dmu_objset_destroy() to fail with EBUSY thus
- * leaving the dataset in an inconsistent state.
- */
- rw_enter(&ztest_name_lock, RW_WRITER);
- error = spa_vdev_remove(spa, guid, B_FALSE);
- rw_exit(&ztest_name_lock);
-
- switch (error) {
- case 0:
- case EEXIST:
- case ZFS_ERR_CHECKPOINT_EXISTS:
- case ZFS_ERR_DISCARDING_CHECKPOINT:
- break;
- default:
- fatal(0, "spa_vdev_remove() = %d", error);
- }
- } else {
- spa_config_exit(spa, SCL_VDEV, FTAG);
-
- /*
- * Make 1/4 of the devices be log devices
- */
- nvroot = make_vdev_root(NULL, NULL, NULL,
- ztest_opts.zo_vdev_size, 0, (ztest_random(4) == 0) ?
- "log" : NULL, ztest_opts.zo_raidz, zs->zs_mirrors, 1);
-
- error = spa_vdev_add(spa, nvroot);
- nvlist_free(nvroot);
-
- switch (error) {
- case 0:
- break;
- case ENOSPC:
- ztest_record_enospc("spa_vdev_add");
- break;
- default:
- fatal(0, "spa_vdev_add() = %d", error);
- }
- }
-
- mutex_exit(&ztest_vdev_lock);
-}
-
-/* ARGSUSED */
-void
-ztest_vdev_class_add(ztest_ds_t *zd, uint64_t id)
-{
- ztest_shared_t *zs = ztest_shared;
- spa_t *spa = ztest_spa;
- uint64_t leaves;
- nvlist_t *nvroot;
- const char *class = (ztest_random(2) == 0) ?
- VDEV_ALLOC_BIAS_SPECIAL : VDEV_ALLOC_BIAS_DEDUP;
- int error;
-
- /*
- * By default add a special vdev 50% of the time
- */
- if ((ztest_opts.zo_special_vdevs == ZTEST_VDEV_CLASS_OFF) ||
- (ztest_opts.zo_special_vdevs == ZTEST_VDEV_CLASS_RND &&
- ztest_random(2) == 0)) {
- return;
- }
-
- mutex_enter(&ztest_vdev_lock);
-
- /* Only test with mirrors */
- if (zs->zs_mirrors < 2) {
- mutex_exit(&ztest_vdev_lock);
- return;
- }
-
- /* requires feature@allocation_classes */
- if (!spa_feature_is_enabled(spa, SPA_FEATURE_ALLOCATION_CLASSES)) {
- mutex_exit(&ztest_vdev_lock);
- return;
- }
-
- leaves = MAX(zs->zs_mirrors + zs->zs_splits, 1) * ztest_opts.zo_raidz;
-
- spa_config_enter(spa, SCL_VDEV, FTAG, RW_READER);
- ztest_shared->zs_vdev_next_leaf = find_vdev_hole(spa) * leaves;
- spa_config_exit(spa, SCL_VDEV, FTAG);
-
- nvroot = make_vdev_root(NULL, NULL, NULL, ztest_opts.zo_vdev_size, 0,
- class, ztest_opts.zo_raidz, zs->zs_mirrors, 1);
-
- error = spa_vdev_add(spa, nvroot);
- nvlist_free(nvroot);
-
- if (error == ENOSPC)
- ztest_record_enospc("spa_vdev_add");
- else if (error != 0)
- fatal(0, "spa_vdev_add() = %d", error);
-
- /*
- * 50% of the time allow small blocks in the special class
- */
- if (error == 0 &&
- spa_special_class(spa)->mc_groups == 1 && ztest_random(2) == 0) {
- if (ztest_opts.zo_verbose >= 3)
- (void) printf("Enabling special VDEV small blocks\n");
- (void) ztest_dsl_prop_set_uint64(zd->zd_name,
- ZFS_PROP_SPECIAL_SMALL_BLOCKS, 32768, B_FALSE);
- }
-
- mutex_exit(&ztest_vdev_lock);
-
- if (ztest_opts.zo_verbose >= 3) {
- metaslab_class_t *mc;
-
- if (strcmp(class, VDEV_ALLOC_BIAS_SPECIAL) == 0)
- mc = spa_special_class(spa);
- else
- mc = spa_dedup_class(spa);
- (void) printf("Added a %s mirrored vdev (of %d)\n",
- class, (int)mc->mc_groups);
- }
-}
-
-/*
- * Verify that adding/removing aux devices (l2arc, hot spare) works as expected.
- */
-/* ARGSUSED */
-void
-ztest_vdev_aux_add_remove(ztest_ds_t *zd, uint64_t id)
-{
- ztest_shared_t *zs = ztest_shared;
- spa_t *spa = ztest_spa;
- vdev_t *rvd = spa->spa_root_vdev;
- spa_aux_vdev_t *sav;
- char *aux;
- uint64_t guid = 0;
- int error;
-
- if (ztest_opts.zo_mmp_test)
- return;
-
- if (ztest_random(2) == 0) {
- sav = &spa->spa_spares;
- aux = ZPOOL_CONFIG_SPARES;
- } else {
- sav = &spa->spa_l2cache;
- aux = ZPOOL_CONFIG_L2CACHE;
- }
-
- mutex_enter(&ztest_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.
- */
- zs->zs_vdev_aux = 0;
- for (;;) {
- char path[MAXPATHLEN];
- int c;
- (void) snprintf(path, sizeof (path), ztest_aux_template,
- ztest_opts.zo_dir, ztest_opts.zo_pool, aux,
- zs->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;
- zs->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, NULL,
- (ztest_opts.zo_vdev_size * 5) / 4, 0, NULL, 0, 0, 1);
- error = spa_vdev_add(spa, nvroot);
-
- switch (error) {
- case 0:
- break;
- default:
- 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, 0, NULL);
-
- error = spa_vdev_remove(spa, guid, B_FALSE);
-
- switch (error) {
- case 0:
- case EBUSY:
- case ZFS_ERR_CHECKPOINT_EXISTS:
- case ZFS_ERR_DISCARDING_CHECKPOINT:
- break;
- default:
- fatal(0, "spa_vdev_remove(%llu) = %d", guid, error);
- }
- }
-
- mutex_exit(&ztest_vdev_lock);
-}
-
-/*
- * split a pool if it has mirror tlvdevs
- */
-/* ARGSUSED */
-void
-ztest_split_pool(ztest_ds_t *zd, uint64_t id)
-{
- ztest_shared_t *zs = ztest_shared;
- spa_t *spa = ztest_spa;
- vdev_t *rvd = spa->spa_root_vdev;
- nvlist_t *tree, **child, *config, *split, **schild;
- uint_t c, children, schildren = 0, lastlogid = 0;
- int error = 0;
-
- if (ztest_opts.zo_mmp_test)
- return;
-
- mutex_enter(&ztest_vdev_lock);
-
- /* ensure we have a useable config; mirrors of raidz aren't supported */
- if (zs->zs_mirrors < 3 || ztest_opts.zo_raidz > 1) {
- mutex_exit(&ztest_vdev_lock);
- return;
- }
-
- /* clean up the old pool, if any */
- (void) spa_destroy("splitp");
-
- spa_config_enter(spa, SCL_VDEV, FTAG, RW_READER);
-
- /* generate a config from the existing config */
- mutex_enter(&spa->spa_props_lock);
- VERIFY(nvlist_lookup_nvlist(spa->spa_config, ZPOOL_CONFIG_VDEV_TREE,
- &tree) == 0);
- mutex_exit(&spa->spa_props_lock);
-
- VERIFY(nvlist_lookup_nvlist_array(tree, ZPOOL_CONFIG_CHILDREN, &child,
- &children) == 0);
-
- schild = malloc(rvd->vdev_children * sizeof (nvlist_t *));
- for (c = 0; c < children; c++) {
- vdev_t *tvd = rvd->vdev_child[c];
- nvlist_t **mchild;
- uint_t mchildren;
-
- if (tvd->vdev_islog || tvd->vdev_ops == &vdev_hole_ops) {
- VERIFY(nvlist_alloc(&schild[schildren], NV_UNIQUE_NAME,
- 0) == 0);
- VERIFY(nvlist_add_string(schild[schildren],
- ZPOOL_CONFIG_TYPE, VDEV_TYPE_HOLE) == 0);
- VERIFY(nvlist_add_uint64(schild[schildren],
- ZPOOL_CONFIG_IS_HOLE, 1) == 0);
- if (lastlogid == 0)
- lastlogid = schildren;
- ++schildren;
- continue;
- }
- lastlogid = 0;
- VERIFY(nvlist_lookup_nvlist_array(child[c],
- ZPOOL_CONFIG_CHILDREN, &mchild, &mchildren) == 0);
- VERIFY(nvlist_dup(mchild[0], &schild[schildren++], 0) == 0);
- }
-
- /* OK, create a config that can be used to split */
- VERIFY(nvlist_alloc(&split, NV_UNIQUE_NAME, 0) == 0);
- VERIFY(nvlist_add_string(split, ZPOOL_CONFIG_TYPE,
- VDEV_TYPE_ROOT) == 0);
- VERIFY(nvlist_add_nvlist_array(split, ZPOOL_CONFIG_CHILDREN, schild,
- lastlogid != 0 ? lastlogid : schildren) == 0);
-
- VERIFY(nvlist_alloc(&config, NV_UNIQUE_NAME, 0) == 0);
- VERIFY(nvlist_add_nvlist(config, ZPOOL_CONFIG_VDEV_TREE, split) == 0);
-
- for (c = 0; c < schildren; c++)
- nvlist_free(schild[c]);
- free(schild);
- nvlist_free(split);
-
- spa_config_exit(spa, SCL_VDEV, FTAG);
-
- rw_enter(&ztest_name_lock, RW_WRITER);
- error = spa_vdev_split_mirror(spa, "splitp", config, NULL, B_FALSE);
- rw_exit(&ztest_name_lock);
-
- nvlist_free(config);
-
- if (error == 0) {
- (void) printf("successful split - results:\n");
- mutex_enter(&spa_namespace_lock);
- show_pool_stats(spa);
- show_pool_stats(spa_lookup("splitp"));
- mutex_exit(&spa_namespace_lock);
- ++zs->zs_splits;
- --zs->zs_mirrors;
- }
- mutex_exit(&ztest_vdev_lock);
-}
-
-/*
- * Verify that we can attach and detach devices.
- */
-/* ARGSUSED */
-void
-ztest_vdev_attach_detach(ztest_ds_t *zd, uint64_t id)
-{
- ztest_shared_t *zs = ztest_shared;
- spa_t *spa = ztest_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;
- uint64_t leaf, top;
- uint64_t ashift = ztest_get_ashift();
- uint64_t oldguid, pguid;
- uint64_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;
-
- if (ztest_opts.zo_mmp_test)
- return;
-
- mutex_enter(&ztest_vdev_lock);
- leaves = MAX(zs->zs_mirrors, 1) * ztest_opts.zo_raidz;
-
- spa_config_enter(spa, SCL_ALL, FTAG, RW_WRITER);
-
- /*
- * If a vdev is in the process of being removed, its removal may
- * finish while we are in progress, leading to an unexpected error
- * value. Don't bother trying to attach while we are in the middle
- * of removal.
- */
- if (ztest_device_removal_active) {
- spa_config_exit(spa, SCL_ALL, FTAG);
- mutex_exit(&ztest_vdev_lock);
- return;
- }
-
- /*
- * Decide whether to do an attach or a replace.
- */
- replacing = ztest_random(2);
-
- /*
- * Pick a random top-level vdev.
- */
- top = ztest_random_vdev_top(spa, B_TRUE);
-
- /*
- * Pick a random leaf within it.
- */
- leaf = ztest_random(leaves);
-
- /*
- * Locate this vdev.
- */
- oldvd = rvd->vdev_child[top];
-
- /* pick a child from the mirror */
- if (zs->zs_mirrors >= 1) {
- ASSERT(oldvd->vdev_ops == &vdev_mirror_ops);
- ASSERT(oldvd->vdev_children >= zs->zs_mirrors);
- oldvd = oldvd->vdev_child[leaf / ztest_opts.zo_raidz];
- }
-
- /* pick a child out of the raidz group */
- if (ztest_opts.zo_raidz > 1) {
- ASSERT(oldvd->vdev_ops == &vdev_raidz_ops);
- ASSERT(oldvd->vdev_children == ztest_opts.zo_raidz);
- oldvd = oldvd->vdev_child[leaf % ztest_opts.zo_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(oldvd->vdev_children)];
- }
-
- oldguid = oldvd->vdev_guid;
- oldsize = vdev_get_min_asize(oldvd);
- oldvd_is_log = oldvd->vdev_top->vdev_islog;
- (void) strcpy(oldpath, oldvd->vdev_path);
- pvd = oldvd->vdev_parent;
- pguid = pvd->vdev_guid;
-
- /*
- * If oldvd has siblings, then half of the time, detach it.
- */
- if (oldvd_has_siblings && ztest_random(2) == 0) {
- spa_config_exit(spa, SCL_ALL, FTAG);
- error = spa_vdev_detach(spa, oldguid, pguid, B_FALSE);
- if (error != 0 && error != ENODEV && error != EBUSY &&
- error != ENOTSUP && error != ZFS_ERR_CHECKPOINT_EXISTS &&
- error != ZFS_ERR_DISCARDING_CHECKPOINT)
- fatal(0, "detach (%s) returned %d", oldpath, error);
- mutex_exit(&ztest_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,
- ztest_opts.zo_dir, ztest_opts.zo_pool,
- top * leaves + leaf);
- if (ztest_random(2) == 0)
- newpath[strlen(newpath) - 1] = 'b';
- newvd = vdev_lookup_by_path(rvd, newpath);
- }
-
- if (newvd) {
- /*
- * Reopen to ensure the vdev's asize field isn't stale.
- */
- vdev_reopen(newvd);
- newsize = vdev_get_min_asize(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_ALL, FTAG);
-
- /*
- * Build the nvlist describing newpath.
- */
- root = make_vdev_root(newpath, NULL, NULL, newvd == NULL ? newsize : 0,
- ashift, NULL, 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;
-
- if (error == ZFS_ERR_CHECKPOINT_EXISTS ||
- error == ZFS_ERR_DISCARDING_CHECKPOINT)
- 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, oldsize, newpath,
- newsize, replacing, error, expected_error);
- }
-
- mutex_exit(&ztest_vdev_lock);
-}
-
-/* ARGSUSED */
-void
-ztest_device_removal(ztest_ds_t *zd, uint64_t id)
-{
- spa_t *spa = ztest_spa;
- vdev_t *vd;
- uint64_t guid;
- int error;
-
- mutex_enter(&ztest_vdev_lock);
-
- if (ztest_device_removal_active) {
- mutex_exit(&ztest_vdev_lock);
- return;
- }
-
- /*
- * Remove a random top-level vdev and wait for removal to finish.
- */
- spa_config_enter(spa, SCL_VDEV, FTAG, RW_READER);
- vd = vdev_lookup_top(spa, ztest_random_vdev_top(spa, B_FALSE));
- guid = vd->vdev_guid;
- spa_config_exit(spa, SCL_VDEV, FTAG);
-
- error = spa_vdev_remove(spa, guid, B_FALSE);
- if (error == 0) {
- ztest_device_removal_active = B_TRUE;
- mutex_exit(&ztest_vdev_lock);
-
- while (spa->spa_vdev_removal != NULL)
- txg_wait_synced(spa_get_dsl(spa), 0);
- } else {
- mutex_exit(&ztest_vdev_lock);
- return;
- }
-
- /*
- * The pool needs to be scrubbed after completing device removal.
- * Failure to do so may result in checksum errors due to the
- * strategy employed by ztest_fault_inject() when selecting which
- * offset are redundant and can be damaged.
- */
- error = spa_scan(spa, POOL_SCAN_SCRUB);
- if (error == 0) {
- while (dsl_scan_scrubbing(spa_get_dsl(spa)))
- txg_wait_synced(spa_get_dsl(spa), 0);
- }
-
- mutex_enter(&ztest_vdev_lock);
- ztest_device_removal_active = B_FALSE;
- mutex_exit(&ztest_vdev_lock);
-}
-
-/*
- * Callback function which expands the physical size of the vdev.
- */
-vdev_t *
-grow_vdev(vdev_t *vd, void *arg)
-{
- spa_t *spa = vd->vdev_spa;
- size_t *newsize = arg;
- size_t fsize;
- int fd;
-
- ASSERT(spa_config_held(spa, SCL_STATE, RW_READER) == SCL_STATE);
- ASSERT(vd->vdev_ops->vdev_op_leaf);
-
- if ((fd = open(vd->vdev_path, O_RDWR)) == -1)
- return (vd);
-
- fsize = lseek(fd, 0, SEEK_END);
- (void) ftruncate(fd, *newsize);
-
- if (ztest_opts.zo_verbose >= 6) {
- (void) printf("%s grew from %lu to %lu bytes\n",
- vd->vdev_path, (ulong_t)fsize, (ulong_t)*newsize);
- }
- (void) close(fd);
- return (NULL);
-}
-
-/*
- * Callback function which expands a given vdev by calling vdev_online().
- */
-/* ARGSUSED */
-vdev_t *
-online_vdev(vdev_t *vd, void *arg)
-{
- spa_t *spa = vd->vdev_spa;
- vdev_t *tvd = vd->vdev_top;
- uint64_t guid = vd->vdev_guid;
- uint64_t generation = spa->spa_config_generation + 1;
- vdev_state_t newstate = VDEV_STATE_UNKNOWN;
- int error;
-
- ASSERT(spa_config_held(spa, SCL_STATE, RW_READER) == SCL_STATE);
- ASSERT(vd->vdev_ops->vdev_op_leaf);
-
- /* Calling vdev_online will initialize the new metaslabs */
- spa_config_exit(spa, SCL_STATE, spa);
- error = vdev_online(spa, guid, ZFS_ONLINE_EXPAND, &newstate);
- spa_config_enter(spa, SCL_STATE, spa, RW_READER);
-
- /*
- * If vdev_online returned an error or the underlying vdev_open
- * failed then we abort the expand. The only way to know that
- * vdev_open fails is by checking the returned newstate.
- */
- if (error || newstate != VDEV_STATE_HEALTHY) {
- if (ztest_opts.zo_verbose >= 5) {
- (void) printf("Unable to expand vdev, state %llu, "
- "error %d\n", (u_longlong_t)newstate, error);
- }
- return (vd);
- }
- ASSERT3U(newstate, ==, VDEV_STATE_HEALTHY);
-
- /*
- * Since we dropped the lock we need to ensure that we're
- * still talking to the original vdev. It's possible this
- * vdev may have been detached/replaced while we were
- * trying to online it.
- */
- if (generation != spa->spa_config_generation) {
- if (ztest_opts.zo_verbose >= 5) {
- (void) printf("vdev configuration has changed, "
- "guid %llu, state %llu, expected gen %llu, "
- "got gen %llu\n",
- (u_longlong_t)guid,
- (u_longlong_t)tvd->vdev_state,
- (u_longlong_t)generation,
- (u_longlong_t)spa->spa_config_generation);
- }
- return (vd);
- }
- return (NULL);
-}
-
-/*
- * Traverse the vdev tree calling the supplied function.
- * We continue to walk the tree until we either have walked all
- * children or we receive a non-NULL return from the callback.
- * If a NULL callback is passed, then we just return back the first
- * leaf vdev we encounter.
- */
-vdev_t *
-vdev_walk_tree(vdev_t *vd, vdev_t *(*func)(vdev_t *, void *), void *arg)
-{
- if (vd->vdev_ops->vdev_op_leaf) {
- if (func == NULL)
- return (vd);
- else
- return (func(vd, arg));
- }
-
- for (uint_t c = 0; c < vd->vdev_children; c++) {
- vdev_t *cvd = vd->vdev_child[c];
- if ((cvd = vdev_walk_tree(cvd, func, arg)) != NULL)
- return (cvd);
- }
- return (NULL);
-}
-
-/*
- * Verify that dynamic LUN growth works as expected.
- */
-/* ARGSUSED */
-void
-ztest_vdev_LUN_growth(ztest_ds_t *zd, uint64_t id)
-{
- spa_t *spa = ztest_spa;
- vdev_t *vd, *tvd;
- metaslab_class_t *mc;
- metaslab_group_t *mg;
- size_t psize, newsize;
- uint64_t top;
- uint64_t old_class_space, new_class_space, old_ms_count, new_ms_count;
-
- mutex_enter(&ztest_checkpoint_lock);
- mutex_enter(&ztest_vdev_lock);
- spa_config_enter(spa, SCL_STATE, spa, RW_READER);
-
- /*
- * If there is a vdev removal in progress, it could complete while
- * we are running, in which case we would not be able to verify
- * that the metaslab_class space increased (because it decreases
- * when the device removal completes).
- */
- if (ztest_device_removal_active) {
- spa_config_exit(spa, SCL_STATE, spa);
- mutex_exit(&ztest_vdev_lock);
- mutex_exit(&ztest_checkpoint_lock);
- return;
- }
-
- top = ztest_random_vdev_top(spa, B_TRUE);
-
- tvd = spa->spa_root_vdev->vdev_child[top];
- mg = tvd->vdev_mg;
- mc = mg->mg_class;
- old_ms_count = tvd->vdev_ms_count;
- old_class_space = metaslab_class_get_space(mc);
-
- /*
- * Determine the size of the first leaf vdev associated with
- * our top-level device.
- */
- vd = vdev_walk_tree(tvd, NULL, NULL);
- ASSERT3P(vd, !=, NULL);
- ASSERT(vd->vdev_ops->vdev_op_leaf);
-
- psize = vd->vdev_psize;
-
- /*
- * We only try to expand the vdev if it's healthy, less than 4x its
- * original size, and it has a valid psize.
- */
- if (tvd->vdev_state != VDEV_STATE_HEALTHY ||
- psize == 0 || psize >= 4 * ztest_opts.zo_vdev_size) {
- spa_config_exit(spa, SCL_STATE, spa);
- mutex_exit(&ztest_vdev_lock);
- mutex_exit(&ztest_checkpoint_lock);
- return;
- }
- ASSERT(psize > 0);
- newsize = psize + MAX(psize / 8, SPA_MAXBLOCKSIZE);
- ASSERT3U(newsize, >, psize);
-
- if (ztest_opts.zo_verbose >= 6) {
- (void) printf("Expanding LUN %s from %lu to %lu\n",
- vd->vdev_path, (ulong_t)psize, (ulong_t)newsize);
- }
-
- /*
- * Growing the vdev is a two step process:
- * 1). expand the physical size (i.e. relabel)
- * 2). online the vdev to create the new metaslabs
- */
- if (vdev_walk_tree(tvd, grow_vdev, &newsize) != NULL ||
- vdev_walk_tree(tvd, online_vdev, NULL) != NULL ||
- tvd->vdev_state != VDEV_STATE_HEALTHY) {
- if (ztest_opts.zo_verbose >= 5) {
- (void) printf("Could not expand LUN because "
- "the vdev configuration changed.\n");
- }
- spa_config_exit(spa, SCL_STATE, spa);
- mutex_exit(&ztest_vdev_lock);
- mutex_exit(&ztest_checkpoint_lock);
- return;
- }
-
- spa_config_exit(spa, SCL_STATE, spa);
-
- /*
- * Expanding the LUN will update the config asynchronously,
- * thus we must wait for the async thread to complete any
- * pending tasks before proceeding.
- */
- for (;;) {
- boolean_t done;
- mutex_enter(&spa->spa_async_lock);
- done = (spa->spa_async_thread == NULL && !spa->spa_async_tasks);
- mutex_exit(&spa->spa_async_lock);
- if (done)
- break;
- txg_wait_synced(spa_get_dsl(spa), 0);
- (void) poll(NULL, 0, 100);
- }
-
- spa_config_enter(spa, SCL_STATE, spa, RW_READER);
-
- tvd = spa->spa_root_vdev->vdev_child[top];
- new_ms_count = tvd->vdev_ms_count;
- new_class_space = metaslab_class_get_space(mc);
-
- if (tvd->vdev_mg != mg || mg->mg_class != mc) {
- if (ztest_opts.zo_verbose >= 5) {
- (void) printf("Could not verify LUN expansion due to "
- "intervening vdev offline or remove.\n");
- }
- spa_config_exit(spa, SCL_STATE, spa);
- mutex_exit(&ztest_vdev_lock);
- mutex_exit(&ztest_checkpoint_lock);
- return;
- }
-
- /*
- * Make sure we were able to grow the vdev.
- */
- if (new_ms_count <= old_ms_count) {
- fatal(0, "LUN expansion failed: ms_count %llu < %llu\n",
- old_ms_count, new_ms_count);
- }
-
- /*
- * Make sure we were able to grow the pool.
- */
- if (new_class_space <= old_class_space) {
- fatal(0, "LUN expansion failed: class_space %llu < %llu\n",
- old_class_space, new_class_space);
- }
-
- if (ztest_opts.zo_verbose >= 5) {
- char oldnumbuf[NN_NUMBUF_SZ], newnumbuf[NN_NUMBUF_SZ];
-
- nicenum(old_class_space, oldnumbuf, sizeof (oldnumbuf));
- nicenum(new_class_space, newnumbuf, sizeof (newnumbuf));
- (void) printf("%s grew from %s to %s\n",
- spa->spa_name, oldnumbuf, newnumbuf);
- }
-
- spa_config_exit(spa, SCL_STATE, spa);
- mutex_exit(&ztest_vdev_lock);
- mutex_exit(&ztest_checkpoint_lock);
-}
-
-/*
- * Verify that dmu_objset_{create,destroy,open,close} work as expected.
- */
-/* ARGSUSED */
-static void
-ztest_objset_create_cb(objset_t *os, void *arg, cred_t *cr, dmu_tx_t *tx)
-{
- /*
- * Create the objects common to all ztest datasets.
- */
- VERIFY(zap_create_claim(os, ZTEST_DIROBJ,
- DMU_OT_ZAP_OTHER, DMU_OT_NONE, 0, tx) == 0);
-}
-
-static int
-ztest_dataset_create(char *dsname)
-{
- uint64_t zilset = ztest_random(100);
- int err = dmu_objset_create(dsname, DMU_OST_OTHER, 0,
- ztest_objset_create_cb, NULL);
-
- if (err || zilset < 80)
- return (err);
-
- if (ztest_opts.zo_verbose >= 6)
- (void) printf("Setting dataset %s to sync always\n", dsname);
- return (ztest_dsl_prop_set_uint64(dsname, ZFS_PROP_SYNC,
- ZFS_SYNC_ALWAYS, B_FALSE));
-}
-
-/* ARGSUSED */
-static int
-ztest_objset_destroy_cb(const char *name, void *arg)
-{
- objset_t *os;
- dmu_object_info_t doi;
- int error;
-
- /*
- * Verify that the dataset contains a directory object.
- */
- VERIFY0(dmu_objset_own(name, DMU_OST_OTHER, B_TRUE, FTAG, &os));
- error = dmu_object_info(os, ZTEST_DIROBJ, &doi);
- if (error != ENOENT) {
- /* We could have crashed in the middle of destroying it */
- ASSERT0(error);
- ASSERT3U(doi.doi_type, ==, DMU_OT_ZAP_OTHER);
- ASSERT3S(doi.doi_physical_blocks_512, >=, 0);
- }
- dmu_objset_disown(os, FTAG);
-
- /*
- * Destroy the dataset.
- */
- if (strchr(name, '@') != NULL) {
- VERIFY0(dsl_destroy_snapshot(name, B_FALSE));
- } else {
- VERIFY0(dsl_destroy_head(name));
- }
- return (0);
-}
-
-static boolean_t
-ztest_snapshot_create(char *osname, uint64_t id)
-{
- char snapname[ZFS_MAX_DATASET_NAME_LEN];
- int error;
-
- (void) snprintf(snapname, sizeof (snapname), "%llu", (u_longlong_t)id);
-
- error = dmu_objset_snapshot_one(osname, snapname);
- if (error == ENOSPC) {
- ztest_record_enospc(FTAG);
- return (B_FALSE);
- }
- if (error != 0 && error != EEXIST) {
- fatal(0, "ztest_snapshot_create(%s@%s) = %d", osname,
- snapname, error);
- }
- return (B_TRUE);
-}
-
-static boolean_t
-ztest_snapshot_destroy(char *osname, uint64_t id)
-{
- char snapname[ZFS_MAX_DATASET_NAME_LEN];
- int error;
-
- (void) snprintf(snapname, sizeof (snapname), "%s@%llu", osname,
- (u_longlong_t)id);
-
- error = dsl_destroy_snapshot(snapname, B_FALSE);
- if (error != 0 && error != ENOENT)
- fatal(0, "ztest_snapshot_destroy(%s) = %d", snapname, error);
- return (B_TRUE);
-}
-
-/* ARGSUSED */
-void
-ztest_dmu_objset_create_destroy(ztest_ds_t *zd, uint64_t id)
-{
- ztest_ds_t zdtmp;
- int iters;
- int error;
- objset_t *os, *os2;
- char name[ZFS_MAX_DATASET_NAME_LEN];
- zilog_t *zilog;
-
- rw_enter(&ztest_name_lock, RW_READER);
-
- (void) snprintf(name, sizeof (name), "%s/temp_%llu",
- ztest_opts.zo_pool, (u_longlong_t)id);
-
- /*
- * 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_objset_destroy_cb()) should just throw it away.
- */
- if (ztest_random(2) == 0 &&
- dmu_objset_own(name, DMU_OST_OTHER, B_FALSE, FTAG, &os) == 0) {
- ztest_zd_init(&zdtmp, NULL, os);
- zil_replay(os, &zdtmp, ztest_replay_vector);
- ztest_zd_fini(&zdtmp);
- dmu_objset_disown(os, FTAG);
- }
-
- /*
- * 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_objset_destroy_cb, NULL,
- DS_FIND_CHILDREN | DS_FIND_SNAPSHOTS);
-
- /*
- * Verify that the destroyed dataset is no longer in the namespace.
- */
- VERIFY3U(ENOENT, ==, dmu_objset_own(name, DMU_OST_OTHER, B_TRUE,
- FTAG, &os));
-
- /*
- * Verify that we can create a new dataset.
- */
- error = ztest_dataset_create(name);
- if (error) {
- if (error == ENOSPC) {
- ztest_record_enospc(FTAG);
- rw_exit(&ztest_name_lock);
- return;
- }
- fatal(0, "dmu_objset_create(%s) = %d", name, error);
- }
-
- VERIFY0(dmu_objset_own(name, DMU_OST_OTHER, B_FALSE, FTAG, &os));
-
- ztest_zd_init(&zdtmp, NULL, os);
-
- /*
- * Open the intent log for it.
- */
- zilog = zil_open(os, ztest_get_data);
-
- /*
- * Put some objects in there, do a little I/O to them,
- * and randomly take a couple of snapshots along the way.
- */
- iters = ztest_random(5);
- for (int i = 0; i < iters; i++) {
- ztest_dmu_object_alloc_free(&zdtmp, id);
- if (ztest_random(iters) == 0)
- (void) ztest_snapshot_create(name, i);
- }
-
- /*
- * Verify that we cannot create an existing dataset.
- */
- VERIFY3U(EEXIST, ==,
- dmu_objset_create(name, DMU_OST_OTHER, 0, NULL, NULL));
-
- /*
- * Verify that we can hold an objset that is also owned.
- */
- VERIFY3U(0, ==, dmu_objset_hold(name, FTAG, &os2));
- dmu_objset_rele(os2, FTAG);
-
- /*
- * Verify that we cannot own an objset that is already owned.
- */
- VERIFY3U(EBUSY, ==,
- dmu_objset_own(name, DMU_OST_OTHER, B_FALSE, FTAG, &os2));
-
- zil_close(zilog);
- dmu_objset_disown(os, FTAG);
- ztest_zd_fini(&zdtmp);
-
- rw_exit(&ztest_name_lock);
-}
-
-/*
- * Verify that dmu_snapshot_{create,destroy,open,close} work as expected.
- */
-void
-ztest_dmu_snapshot_create_destroy(ztest_ds_t *zd, uint64_t id)
-{
- rw_enter(&ztest_name_lock, RW_READER);
- (void) ztest_snapshot_destroy(zd->zd_name, id);
- (void) ztest_snapshot_create(zd->zd_name, id);
- rw_exit(&ztest_name_lock);
-}
-
-/*
- * Cleanup non-standard snapshots and clones.
- */
-void
-ztest_dsl_dataset_cleanup(char *osname, uint64_t id)
-{
- char snap1name[ZFS_MAX_DATASET_NAME_LEN];
- char clone1name[ZFS_MAX_DATASET_NAME_LEN];
- char snap2name[ZFS_MAX_DATASET_NAME_LEN];
- char clone2name[ZFS_MAX_DATASET_NAME_LEN];
- char snap3name[ZFS_MAX_DATASET_NAME_LEN];
- int error;
-
- (void) snprintf(snap1name, sizeof (snap1name),
- "%s@s1_%llu", osname, id);
- (void) snprintf(clone1name, sizeof (clone1name),
- "%s/c1_%llu", osname, id);
- (void) snprintf(snap2name, sizeof (snap2name),
- "%s@s2_%llu", clone1name, id);
- (void) snprintf(clone2name, sizeof (clone2name),
- "%s/c2_%llu", osname, id);
- (void) snprintf(snap3name, sizeof (snap3name),
- "%s@s3_%llu", clone1name, id);
-
- error = dsl_destroy_head(clone2name);
- if (error && error != ENOENT)
- fatal(0, "dsl_destroy_head(%s) = %d", clone2name, error);
- error = dsl_destroy_snapshot(snap3name, B_FALSE);
- if (error && error != ENOENT)
- fatal(0, "dsl_destroy_snapshot(%s) = %d", snap3name, error);
- error = dsl_destroy_snapshot(snap2name, B_FALSE);
- if (error && error != ENOENT)
- fatal(0, "dsl_destroy_snapshot(%s) = %d", snap2name, error);
- error = dsl_destroy_head(clone1name);
- if (error && error != ENOENT)
- fatal(0, "dsl_destroy_head(%s) = %d", clone1name, error);
- error = dsl_destroy_snapshot(snap1name, B_FALSE);
- if (error && error != ENOENT)
- fatal(0, "dsl_destroy_snapshot(%s) = %d", snap1name, error);
-}
-
-/*
- * Verify dsl_dataset_promote handles EBUSY
- */
-void
-ztest_dsl_dataset_promote_busy(ztest_ds_t *zd, uint64_t id)
-{
- objset_t *os;
- char snap1name[ZFS_MAX_DATASET_NAME_LEN];
- char clone1name[ZFS_MAX_DATASET_NAME_LEN];
- char snap2name[ZFS_MAX_DATASET_NAME_LEN];
- char clone2name[ZFS_MAX_DATASET_NAME_LEN];
- char snap3name[ZFS_MAX_DATASET_NAME_LEN];
- char *osname = zd->zd_name;
- int error;
-
- rw_enter(&ztest_name_lock, RW_READER);
-
- ztest_dsl_dataset_cleanup(osname, id);
-
- (void) snprintf(snap1name, sizeof (snap1name),
- "%s@s1_%llu", osname, id);
- (void) snprintf(clone1name, sizeof (clone1name),
- "%s/c1_%llu", osname, id);
- (void) snprintf(snap2name, sizeof (snap2name),
- "%s@s2_%llu", clone1name, id);
- (void) snprintf(clone2name, sizeof (clone2name),
- "%s/c2_%llu", osname, id);
- (void) snprintf(snap3name, sizeof (snap3name),
- "%s@s3_%llu", clone1name, id);
-
- error = dmu_objset_snapshot_one(osname, strchr(snap1name, '@') + 1);
- if (error && error != EEXIST) {
- if (error == ENOSPC) {
- ztest_record_enospc(FTAG);
- goto out;
- }
- fatal(0, "dmu_take_snapshot(%s) = %d", snap1name, error);
- }
-
- error = dmu_objset_clone(clone1name, snap1name);
- if (error) {
- if (error == ENOSPC) {
- ztest_record_enospc(FTAG);
- goto out;
- }
- fatal(0, "dmu_objset_create(%s) = %d", clone1name, error);
- }
-
- error = dmu_objset_snapshot_one(clone1name, strchr(snap2name, '@') + 1);
- if (error && error != EEXIST) {
- if (error == ENOSPC) {
- ztest_record_enospc(FTAG);
- goto out;
- }
- fatal(0, "dmu_open_snapshot(%s) = %d", snap2name, error);
- }
-
- error = dmu_objset_snapshot_one(clone1name, strchr(snap3name, '@') + 1);
- if (error && error != EEXIST) {
- if (error == ENOSPC) {
- ztest_record_enospc(FTAG);
- goto out;
- }
- fatal(0, "dmu_open_snapshot(%s) = %d", snap3name, error);
- }
-
- error = dmu_objset_clone(clone2name, snap3name);
- if (error) {
- if (error == ENOSPC) {
- ztest_record_enospc(FTAG);
- goto out;
- }
- fatal(0, "dmu_objset_create(%s) = %d", clone2name, error);
- }
-
- error = dmu_objset_own(snap2name, DMU_OST_ANY, B_TRUE, FTAG, &os);
- if (error)
- fatal(0, "dmu_objset_own(%s) = %d", snap2name, error);
- error = dsl_dataset_promote(clone2name, NULL);
- if (error == ENOSPC) {
- dmu_objset_disown(os, FTAG);
- ztest_record_enospc(FTAG);
- goto out;
- }
- if (error != EBUSY)
- fatal(0, "dsl_dataset_promote(%s), %d, not EBUSY", clone2name,
- error);
- dmu_objset_disown(os, FTAG);
-
-out:
- ztest_dsl_dataset_cleanup(osname, id);
-
- rw_exit(&ztest_name_lock);
-}
-
-/*
- * Verify that dmu_object_{alloc,free} work as expected.
- */
-void
-ztest_dmu_object_alloc_free(ztest_ds_t *zd, uint64_t id)
-{
- ztest_od_t od[4];
- int batchsize = sizeof (od) / sizeof (od[0]);
-
- for (int b = 0; b < batchsize; b++) {
- ztest_od_init(&od[b], id, FTAG, b, DMU_OT_UINT64_OTHER,
- 0, 0, 0);
- }
-
- /*
- * Destroy the previous batch of objects, create a new batch,
- * and do some I/O on the new objects.
- */
- if (ztest_object_init(zd, od, sizeof (od), B_TRUE) != 0)
- return;
-
- while (ztest_random(4 * batchsize) != 0)
- ztest_io(zd, od[ztest_random(batchsize)].od_object,
- ztest_random(ZTEST_RANGE_LOCKS) << SPA_MAXBLOCKSHIFT);
-}
-
-/*
- * Rewind the global allocator to verify object allocation backfilling.
- */
-void
-ztest_dmu_object_next_chunk(ztest_ds_t *zd, uint64_t id)
-{
- objset_t *os = zd->zd_os;
- int dnodes_per_chunk = 1 << dmu_object_alloc_chunk_shift;
- uint64_t object;
-
- /*
- * Rewind the global allocator randomly back to a lower object number
- * to force backfilling and reclamation of recently freed dnodes.
- */
- mutex_enter(&os->os_obj_lock);
- object = ztest_random(os->os_obj_next_chunk);
- os->os_obj_next_chunk = P2ALIGN(object, dnodes_per_chunk);
- mutex_exit(&os->os_obj_lock);
-}
-
-/*
- * Verify that dmu_{read,write} work as expected.
- */
-void
-ztest_dmu_read_write(ztest_ds_t *zd, uint64_t id)
-{
- objset_t *os = zd->zd_os;
- ztest_od_t od[2];
- dmu_tx_t *tx;
- int i, freeit, error;
- uint64_t n, s, txg;
- bufwad_t *packbuf, *bigbuf, *pack, *bigH, *bigT;
- uint64_t packobj, packoff, packsize, bigobj, bigoff, bigsize;
- uint64_t chunksize = (1000 + ztest_random(1000)) * sizeof (uint64_t);
- 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.
- */
- ztest_od_init(&od[0], id, FTAG, 0, DMU_OT_UINT64_OTHER, 0, 0,
- chunksize);
- ztest_od_init(&od[1], id, FTAG, 1, DMU_OT_UINT64_OTHER, 0, 0,
- chunksize);
-
- if (ztest_object_init(zd, od, sizeof (od), B_FALSE) != 0)
- return;
-
- bigobj = od[0].od_object;
- packobj = od[1].od_object;
- chunksize = od[0].od_gen;
- ASSERT(chunksize == od[1].od_gen);
-
- /*
- * 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, bigobj, 0, n * chunksize, s * chunksize,
- ZIO_PRIORITY_SYNC_READ);
-
- /*
- * 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 * chunksize;
- bigsize = s * chunksize;
-
- 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, packobj, packoff, packsize, packbuf,
- DMU_READ_PREFETCH);
- ASSERT0(error);
- error = dmu_read(os, bigobj, bigoff, bigsize, bigbuf,
- DMU_READ_PREFETCH);
- ASSERT0(error);
-
- /*
- * Get a tx for the mods to both packobj and bigobj.
- */
- tx = dmu_tx_create(os);
-
- dmu_tx_hold_write(tx, packobj, packoff, packsize);
-
- if (freeit)
- dmu_tx_hold_free(tx, bigobj, bigoff, bigsize);
- else
- dmu_tx_hold_write(tx, bigobj, bigoff, bigsize);
-
- /* This accounts for setting the checksum/compression. */
- dmu_tx_hold_bonus(tx, bigobj);
-
- txg = ztest_tx_assign(tx, TXG_MIGHTWAIT, FTAG);
- if (txg == 0) {
- umem_free(packbuf, packsize);
- umem_free(bigbuf, bigsize);
- return;
- }
-
- enum zio_checksum cksum;
- do {
- cksum = (enum zio_checksum)
- ztest_random_dsl_prop(ZFS_PROP_CHECKSUM);
- } while (cksum >= ZIO_CHECKSUM_LEGACY_FUNCTIONS);
- dmu_object_set_checksum(os, bigobj, cksum, tx);
-
- enum zio_compress comp;
- do {
- comp = (enum zio_compress)
- ztest_random_dsl_prop(ZFS_PROP_COMPRESSION);
- } while (comp >= ZIO_COMPRESS_LEGACY_FUNCTIONS);
- dmu_object_set_compress(os, bigobj, comp, 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 * chunksize);
- /* LINTED */
- bigT = (bufwad_t *)((char *)bigH + chunksize) - 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, packobj, packoff, packsize, packbuf, tx);
-
- if (freeit) {
- if (ztest_opts.zo_verbose >= 7) {
- (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, bigobj, bigoff, bigsize, tx));
- } else {
- if (ztest_opts.zo_verbose >= 7) {
- (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, 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, packobj, packoff,
- packsize, packcheck, DMU_READ_PREFETCH));
- VERIFY(0 == dmu_read(os, bigobj, bigoff,
- bigsize, bigcheck, DMU_READ_PREFETCH));
-
- 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
-compare_and_update_pbbufs(uint64_t s, bufwad_t *packbuf, bufwad_t *bigbuf,
- uint64_t bigsize, uint64_t n, uint64_t chunksize, uint64_t txg)
-{
- uint64_t i;
- bufwad_t *pack;
- bufwad_t *bigH;
- bufwad_t *bigT;
-
- /*
- * 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 * chunksize);
- /* LINTED */
- bigT = (bufwad_t *)((char *)bigH + chunksize) - 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);
-
- pack->bw_index = n + i;
- pack->bw_txg = txg;
- pack->bw_data = 1 + ztest_random(-2ULL);
-
- *bigH = *pack;
- *bigT = *pack;
- }
-}
-
-void
-ztest_dmu_read_write_zcopy(ztest_ds_t *zd, uint64_t id)
-{
- objset_t *os = zd->zd_os;
- ztest_od_t od[2];
- dmu_tx_t *tx;
- uint64_t i;
- int error;
- uint64_t n, s, txg;
- bufwad_t *packbuf, *bigbuf;
- uint64_t packobj, packoff, packsize, bigobj, bigoff, bigsize;
- uint64_t blocksize = ztest_random_blocksize();
- uint64_t chunksize = blocksize;
- uint64_t regions = 997;
- uint64_t stride = 123456789ULL;
- uint64_t width = 9;
- dmu_buf_t *bonus_db;
- arc_buf_t **bigbuf_arcbufs;
- dmu_object_info_t doi;
-
- /*
- * 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 set equal to bigobj block size so that
- * dmu_assign_arcbuf() can be tested for object updates.
- */
-
- /*
- * Read the directory info. If it's the first time, set things up.
- */
- ztest_od_init(&od[0], id, FTAG, 0, DMU_OT_UINT64_OTHER, blocksize,
- 0, 0);
- ztest_od_init(&od[1], id, FTAG, 1, DMU_OT_UINT64_OTHER, 0, 0,
- chunksize);
-
- if (ztest_object_init(zd, od, sizeof (od), B_FALSE) != 0)
- return;
-
- bigobj = od[0].od_object;
- packobj = od[1].od_object;
- blocksize = od[0].od_blocksize;
- chunksize = blocksize;
- ASSERT(chunksize == od[1].od_gen);
-
- VERIFY(dmu_object_info(os, bigobj, &doi) == 0);
- VERIFY(ISP2(doi.doi_data_block_size));
- VERIFY(chunksize == doi.doi_data_block_size);
- VERIFY(chunksize >= 2 * sizeof (bufwad_t));
-
- /*
- * 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 * chunksize;
- bigsize = s * chunksize;
-
- packbuf = umem_zalloc(packsize, UMEM_NOFAIL);
- bigbuf = umem_zalloc(bigsize, UMEM_NOFAIL);
-
- VERIFY3U(0, ==, dmu_bonus_hold(os, bigobj, FTAG, &bonus_db));
-
- bigbuf_arcbufs = umem_zalloc(2 * s * sizeof (arc_buf_t *), UMEM_NOFAIL);
-
- /*
- * Iteration 0 test zcopy for DB_UNCACHED dbufs.
- * Iteration 1 test zcopy to already referenced dbufs.
- * Iteration 2 test zcopy to dirty dbuf in the same txg.
- * Iteration 3 test zcopy to dbuf dirty in previous txg.
- * Iteration 4 test zcopy when dbuf is no longer dirty.
- * Iteration 5 test zcopy when it can't be done.
- * Iteration 6 one more zcopy write.
- */
- for (i = 0; i < 7; i++) {
- uint64_t j;
- uint64_t off;
-
- /*
- * In iteration 5 (i == 5) use arcbufs
- * that don't match bigobj blksz to test
- * dmu_assign_arcbuf() when it can't directly
- * assign an arcbuf to a dbuf.
- */
- for (j = 0; j < s; j++) {
- if (i != 5) {
- bigbuf_arcbufs[j] =
- dmu_request_arcbuf(bonus_db, chunksize);
- } else {
- bigbuf_arcbufs[2 * j] =
- dmu_request_arcbuf(bonus_db, chunksize / 2);
- bigbuf_arcbufs[2 * j + 1] =
- dmu_request_arcbuf(bonus_db, chunksize / 2);
- }
- }
-
- /*
- * Get a tx for the mods to both packobj and bigobj.
- */
- tx = dmu_tx_create(os);
-
- dmu_tx_hold_write(tx, packobj, packoff, packsize);
- dmu_tx_hold_write(tx, bigobj, bigoff, bigsize);
-
- txg = ztest_tx_assign(tx, TXG_MIGHTWAIT, FTAG);
- if (txg == 0) {
- umem_free(packbuf, packsize);
- umem_free(bigbuf, bigsize);
- for (j = 0; j < s; j++) {
- if (i != 5) {
- dmu_return_arcbuf(bigbuf_arcbufs[j]);
- } else {
- dmu_return_arcbuf(
- bigbuf_arcbufs[2 * j]);
- dmu_return_arcbuf(
- bigbuf_arcbufs[2 * j + 1]);
- }
- }
- umem_free(bigbuf_arcbufs, 2 * s * sizeof (arc_buf_t *));
- dmu_buf_rele(bonus_db, FTAG);
- return;
- }
-
- /*
- * 50% of the time don't read objects in the 1st iteration to
- * test dmu_assign_arcbuf() for the case when there're no
- * existing dbufs for the specified offsets.
- */
- if (i != 0 || ztest_random(2) != 0) {
- error = dmu_read(os, packobj, packoff,
- packsize, packbuf, DMU_READ_PREFETCH);
- ASSERT0(error);
- error = dmu_read(os, bigobj, bigoff, bigsize,
- bigbuf, DMU_READ_PREFETCH);
- ASSERT0(error);
- }
- compare_and_update_pbbufs(s, packbuf, bigbuf, bigsize,
- n, chunksize, txg);
-
- /*
- * We've verified all the old bufwads, and made new ones.
- * Now write them out.
- */
- dmu_write(os, packobj, packoff, packsize, packbuf, tx);
- if (ztest_opts.zo_verbose >= 7) {
- (void) printf("writing offset %llx size %llx"
- " txg %llx\n",
- (u_longlong_t)bigoff,
- (u_longlong_t)bigsize,
- (u_longlong_t)txg);
- }
- for (off = bigoff, j = 0; j < s; j++, off += chunksize) {
- dmu_buf_t *dbt;
- if (i != 5) {
- bcopy((caddr_t)bigbuf + (off - bigoff),
- bigbuf_arcbufs[j]->b_data, chunksize);
- } else {
- bcopy((caddr_t)bigbuf + (off - bigoff),
- bigbuf_arcbufs[2 * j]->b_data,
- chunksize / 2);
- bcopy((caddr_t)bigbuf + (off - bigoff) +
- chunksize / 2,
- bigbuf_arcbufs[2 * j + 1]->b_data,
- chunksize / 2);
- }
-
- if (i == 1) {
- VERIFY(dmu_buf_hold(os, bigobj, off,
- FTAG, &dbt, DMU_READ_NO_PREFETCH) == 0);
- }
- if (i != 5) {
- dmu_assign_arcbuf(bonus_db, off,
- bigbuf_arcbufs[j], tx);
- } else {
- dmu_assign_arcbuf(bonus_db, off,
- bigbuf_arcbufs[2 * j], tx);
- dmu_assign_arcbuf(bonus_db,
- off + chunksize / 2,
- bigbuf_arcbufs[2 * j + 1], tx);
- }
- if (i == 1) {
- dmu_buf_rele(dbt, FTAG);
- }
- }
- 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, packobj, packoff,
- packsize, packcheck, DMU_READ_PREFETCH));
- VERIFY(0 == dmu_read(os, bigobj, bigoff,
- bigsize, bigcheck, DMU_READ_PREFETCH));
-
- ASSERT(bcmp(packbuf, packcheck, packsize) == 0);
- ASSERT(bcmp(bigbuf, bigcheck, bigsize) == 0);
-
- umem_free(packcheck, packsize);
- umem_free(bigcheck, bigsize);
- }
- if (i == 2) {
- txg_wait_open(dmu_objset_pool(os), 0);
- } else if (i == 3) {
- txg_wait_synced(dmu_objset_pool(os), 0);
- }
- }
-
- dmu_buf_rele(bonus_db, FTAG);
- umem_free(packbuf, packsize);
- umem_free(bigbuf, bigsize);
- umem_free(bigbuf_arcbufs, 2 * s * sizeof (arc_buf_t *));
-}
-
-/* ARGSUSED */
-void
-ztest_dmu_write_parallel(ztest_ds_t *zd, uint64_t id)
-{
- ztest_od_t od[1];
- uint64_t offset = (1ULL << (ztest_random(20) + 43)) +
- (ztest_random(ZTEST_RANGE_LOCKS) << SPA_MAXBLOCKSHIFT);
-
- /*
- * Have multiple threads write to large offsets in an object
- * to verify that parallel writes to an object -- even to the
- * same blocks within the object -- doesn't cause any trouble.
- */
- ztest_od_init(&od[0], ID_PARALLEL, FTAG, 0, DMU_OT_UINT64_OTHER,
- 0, 0, 0);
-
- if (ztest_object_init(zd, od, sizeof (od), B_FALSE) != 0)
- return;
-
- while (ztest_random(10) != 0)
- ztest_io(zd, od[0].od_object, offset);
-}
-
-void
-ztest_dmu_prealloc(ztest_ds_t *zd, uint64_t id)
-{
- ztest_od_t od[1];
- uint64_t offset = (1ULL << (ztest_random(4) + SPA_MAXBLOCKSHIFT)) +
- (ztest_random(ZTEST_RANGE_LOCKS) << SPA_MAXBLOCKSHIFT);
- uint64_t count = ztest_random(20) + 1;
- uint64_t blocksize = ztest_random_blocksize();
- void *data;
-
- ztest_od_init(&od[0], id, FTAG, 0, DMU_OT_UINT64_OTHER, blocksize,
- 0, 0);
-
- if (ztest_object_init(zd, od, sizeof (od), !ztest_random(2)) != 0)
- return;
-
- if (ztest_truncate(zd, od[0].od_object, offset, count * blocksize) != 0)
- return;
-
- ztest_prealloc(zd, od[0].od_object, offset, count * blocksize);
-
- data = umem_zalloc(blocksize, UMEM_NOFAIL);
-
- while (ztest_random(count) != 0) {
- uint64_t randoff = offset + (ztest_random(count) * blocksize);
- if (ztest_write(zd, od[0].od_object, randoff, blocksize,
- data) != 0)
- break;
- while (ztest_random(4) != 0)
- ztest_io(zd, od[0].od_object, randoff);
- }
-
- umem_free(data, blocksize);
-}
-
-/*
- * 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_ds_t *zd, uint64_t id)
-{
- objset_t *os = zd->zd_os;
- ztest_od_t od[1];
- 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 *hc[2] = { "s.acl.h", ".s.open.h.hyLZlg" };
-
- ztest_od_init(&od[0], id, FTAG, 0, DMU_OT_ZAP_OTHER, 0, 0, 0);
-
- if (ztest_object_init(zd, od, sizeof (od), !ztest_random(2)) != 0)
- return;
-
- object = od[0].od_object;
-
- /*
- * Generate a known hash collision, and verify that
- * we can lookup and remove both entries.
- */
- tx = dmu_tx_create(os);
- dmu_tx_hold_zap(tx, object, B_TRUE, NULL);
- txg = ztest_tx_assign(tx, TXG_MIGHTWAIT, FTAG);
- if (txg == 0)
- return;
- for (i = 0; i < 2; i++) {
- value[i] = i;
- VERIFY3U(0, ==, zap_add(os, object, hc[i], sizeof (uint64_t),
- 1, &value[i], tx));
- }
- for (i = 0; i < 2; i++) {
- VERIFY3U(EEXIST, ==, zap_add(os, object, hc[i],
- sizeof (uint64_t), 1, &value[i], tx));
- VERIFY3U(0, ==,
- zap_length(os, object, hc[i], &zl_intsize, &zl_ints));
- ASSERT3U(zl_intsize, ==, sizeof (uint64_t));
- ASSERT3U(zl_ints, ==, 1);
- }
- for (i = 0; i < 2; i++) {
- VERIFY3U(0, ==, zap_remove(os, object, hc[i], tx));
- }
- dmu_tx_commit(tx);
-
- /*
- * Generate a buch of random entries.
- */
- 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, B_TRUE, NULL);
- txg = ztest_tx_assign(tx, TXG_MIGHTWAIT, FTAG);
- if (txg == 0)
- return;
-
- 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;
-
- VERIFY3U(0, ==, zap_update(os, object, txgname, sizeof (uint64_t),
- 1, &txg, tx));
- VERIFY3U(0, ==, zap_update(os, object, propname, sizeof (uint64_t),
- ints, value, tx));
-
- 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;
-
- ASSERT0(error);
-
- tx = dmu_tx_create(os);
- dmu_tx_hold_zap(tx, object, B_TRUE, NULL);
- txg = ztest_tx_assign(tx, TXG_MIGHTWAIT, FTAG);
- if (txg == 0)
- return;
- VERIFY3U(0, ==, zap_remove(os, object, txgname, tx));
- VERIFY3U(0, ==, zap_remove(os, object, propname, tx));
- dmu_tx_commit(tx);
-}
-
-/*
- * Testcase to test the upgrading of a microzap to fatzap.
- */
-void
-ztest_fzap(ztest_ds_t *zd, uint64_t id)
-{
- objset_t *os = zd->zd_os;
- ztest_od_t od[1];
- uint64_t object, txg;
-
- ztest_od_init(&od[0], id, FTAG, 0, DMU_OT_ZAP_OTHER, 0, 0, 0);
-
- if (ztest_object_init(zd, od, sizeof (od), !ztest_random(2)) != 0)
- return;
-
- object = od[0].od_object;
-
- /*
- * Add entries to this ZAP and make sure it spills over
- * and gets upgraded to a fatzap. Also, since we are adding
- * 2050 entries we should see ptrtbl growth and leaf-block split.
- */
- for (int i = 0; i < 2050; i++) {
- char name[ZFS_MAX_DATASET_NAME_LEN];
- uint64_t value = i;
- dmu_tx_t *tx;
- int error;
-
- (void) snprintf(name, sizeof (name), "fzap-%llu-%llu",
- id, value);
-
- tx = dmu_tx_create(os);
- dmu_tx_hold_zap(tx, object, B_TRUE, name);
- txg = ztest_tx_assign(tx, TXG_MIGHTWAIT, FTAG);
- if (txg == 0)
- return;
- error = zap_add(os, object, name, sizeof (uint64_t), 1,
- &value, tx);
- ASSERT(error == 0 || error == EEXIST);
- dmu_tx_commit(tx);
- }
-}
-
-/* ARGSUSED */
-void
-ztest_zap_parallel(ztest_ds_t *zd, uint64_t id)
-{
- objset_t *os = zd->zd_os;
- ztest_od_t od[1];
- uint64_t txg, object, count, wsize, wc, zl_wsize, zl_wc;
- dmu_tx_t *tx;
- int i, namelen, error;
- int micro = ztest_random(2);
- char name[20], string_value[20];
- void *data;
-
- ztest_od_init(&od[0], ID_PARALLEL, FTAG, micro, DMU_OT_ZAP_OTHER,
- 0, 0, 0);
-
- if (ztest_object_init(zd, od, sizeof (od), B_FALSE) != 0)
- return;
-
- object = od[0].od_object;
-
- /*
- * 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 ((namelen & 1) || micro) {
- wsize = sizeof (txg);
- wc = 1;
- data = &txg;
- } else {
- wsize = 1;
- wc = namelen;
- data = string_value;
- }
-
- count = -1ULL;
- VERIFY0(zap_count(os, object, &count));
- 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, B_TRUE, NULL);
- txg = ztest_tx_assign(tx, TXG_MIGHTWAIT, FTAG);
- if (txg == 0)
- return;
- 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);
-}
-
-/*
- * Commit callback data.
- */
-typedef struct ztest_cb_data {
- list_node_t zcd_node;
- uint64_t zcd_txg;
- int zcd_expected_err;
- boolean_t zcd_added;
- boolean_t zcd_called;
- spa_t *zcd_spa;
-} ztest_cb_data_t;
-
-/* This is the actual commit callback function */
-static void
-ztest_commit_callback(void *arg, int error)
-{
- ztest_cb_data_t *data = arg;
- uint64_t synced_txg;
-
- VERIFY(data != NULL);
- VERIFY3S(data->zcd_expected_err, ==, error);
- VERIFY(!data->zcd_called);
-
- synced_txg = spa_last_synced_txg(data->zcd_spa);
- if (data->zcd_txg > synced_txg)
- fatal(0, "commit callback of txg %" PRIu64 " called prematurely"
- ", last synced txg = %" PRIu64 "\n", data->zcd_txg,
- synced_txg);
-
- data->zcd_called = B_TRUE;
-
- if (error == ECANCELED) {
- ASSERT0(data->zcd_txg);
- ASSERT(!data->zcd_added);
-
- /*
- * The private callback data should be destroyed here, but
- * since we are going to check the zcd_called field after
- * dmu_tx_abort(), we will destroy it there.
- */
- return;
- }
-
- /* Was this callback added to the global callback list? */
- if (!data->zcd_added)
- goto out;
-
- ASSERT3U(data->zcd_txg, !=, 0);
-
- /* Remove our callback from the list */
- mutex_enter(&zcl.zcl_callbacks_lock);
- list_remove(&zcl.zcl_callbacks, data);
- mutex_exit(&zcl.zcl_callbacks_lock);
-
-out:
- umem_free(data, sizeof (ztest_cb_data_t));
-}
-
-/* Allocate and initialize callback data structure */
-static ztest_cb_data_t *
-ztest_create_cb_data(objset_t *os, uint64_t txg)
-{
- ztest_cb_data_t *cb_data;
-
- cb_data = umem_zalloc(sizeof (ztest_cb_data_t), UMEM_NOFAIL);
-
- cb_data->zcd_txg = txg;
- cb_data->zcd_spa = dmu_objset_spa(os);
-
- return (cb_data);
-}
-
-/*
- * If a number of txgs equal to this threshold have been created after a commit
- * callback has been registered but not called, then we assume there is an
- * implementation bug.
- */
-#define ZTEST_COMMIT_CALLBACK_THRESH (TXG_CONCURRENT_STATES + 2)
-
-/*
- * Commit callback test.
- */
-void
-ztest_dmu_commit_callbacks(ztest_ds_t *zd, uint64_t id)
-{
- objset_t *os = zd->zd_os;
- ztest_od_t od[1];
- dmu_tx_t *tx;
- ztest_cb_data_t *cb_data[3], *tmp_cb;
- uint64_t old_txg, txg;
- int i, error;
-
- ztest_od_init(&od[0], id, FTAG, 0, DMU_OT_UINT64_OTHER, 0, 0, 0);
-
- if (ztest_object_init(zd, od, sizeof (od), B_FALSE) != 0)
- return;
-
- tx = dmu_tx_create(os);
-
- cb_data[0] = ztest_create_cb_data(os, 0);
- dmu_tx_callback_register(tx, ztest_commit_callback, cb_data[0]);
-
- dmu_tx_hold_write(tx, od[0].od_object, 0, sizeof (uint64_t));
-
- /* Every once in a while, abort the transaction on purpose */
- if (ztest_random(100) == 0)
- error = -1;
-
- if (!error)
- error = dmu_tx_assign(tx, TXG_NOWAIT);
-
- txg = error ? 0 : dmu_tx_get_txg(tx);
-
- cb_data[0]->zcd_txg = txg;
- cb_data[1] = ztest_create_cb_data(os, txg);
- dmu_tx_callback_register(tx, ztest_commit_callback, cb_data[1]);
-
- if (error) {
- /*
- * It's not a strict requirement to call the registered
- * callbacks from inside dmu_tx_abort(), but that's what
- * it's supposed to happen in the current implementation
- * so we will check for that.
- */
- for (i = 0; i < 2; i++) {
- cb_data[i]->zcd_expected_err = ECANCELED;
- VERIFY(!cb_data[i]->zcd_called);
- }
-
- dmu_tx_abort(tx);
-
- for (i = 0; i < 2; i++) {
- VERIFY(cb_data[i]->zcd_called);
- umem_free(cb_data[i], sizeof (ztest_cb_data_t));
- }
-
- return;
- }
-
- cb_data[2] = ztest_create_cb_data(os, txg);
- dmu_tx_callback_register(tx, ztest_commit_callback, cb_data[2]);
-
- /*
- * Read existing data to make sure there isn't a future leak.
- */
- VERIFY(0 == dmu_read(os, od[0].od_object, 0, sizeof (uint64_t),
- &old_txg, DMU_READ_PREFETCH));
-
- if (old_txg > txg)
- fatal(0, "future leak: got %" PRIu64 ", open txg is %" PRIu64,
- old_txg, txg);
-
- dmu_write(os, od[0].od_object, 0, sizeof (uint64_t), &txg, tx);
-
- mutex_enter(&zcl.zcl_callbacks_lock);
-
- /*
- * Since commit callbacks don't have any ordering requirement and since
- * it is theoretically possible for a commit callback to be called
- * after an arbitrary amount of time has elapsed since its txg has been
- * synced, it is difficult to reliably determine whether a commit
- * callback hasn't been called due to high load or due to a flawed
- * implementation.
- *
- * In practice, we will assume that if after a certain number of txgs a
- * commit callback hasn't been called, then most likely there's an
- * implementation bug..
- */
- tmp_cb = list_head(&zcl.zcl_callbacks);
- if (tmp_cb != NULL &&
- (txg - ZTEST_COMMIT_CALLBACK_THRESH) > tmp_cb->zcd_txg) {
- fatal(0, "Commit callback threshold exceeded, oldest txg: %"
- PRIu64 ", open txg: %" PRIu64 "\n", tmp_cb->zcd_txg, txg);
- }
-
- /*
- * Let's find the place to insert our callbacks.
- *
- * Even though the list is ordered by txg, it is possible for the
- * insertion point to not be the end because our txg may already be
- * quiescing at this point and other callbacks in the open txg
- * (from other objsets) may have sneaked in.
- */
- tmp_cb = list_tail(&zcl.zcl_callbacks);
- while (tmp_cb != NULL && tmp_cb->zcd_txg > txg)
- tmp_cb = list_prev(&zcl.zcl_callbacks, tmp_cb);
-
- /* Add the 3 callbacks to the list */
- for (i = 0; i < 3; i++) {
- if (tmp_cb == NULL)
- list_insert_head(&zcl.zcl_callbacks, cb_data[i]);
- else
- list_insert_after(&zcl.zcl_callbacks, tmp_cb,
- cb_data[i]);
-
- cb_data[i]->zcd_added = B_TRUE;
- VERIFY(!cb_data[i]->zcd_called);
-
- tmp_cb = cb_data[i];
- }
-
- mutex_exit(&zcl.zcl_callbacks_lock);
-
- dmu_tx_commit(tx);
-}
-
-/*
- * Visit each object in the dataset. Verify that its properties
- * are consistent what was stored in the block tag when it was created,
- * and that its unused bonus buffer space has not been overwritten.
- */
-void
-ztest_verify_dnode_bt(ztest_ds_t *zd, uint64_t id)
-{
- objset_t *os = zd->zd_os;
- uint64_t obj;
- int err = 0;
-
- for (obj = 0; err == 0; err = dmu_object_next(os, &obj, FALSE, 0)) {
- ztest_block_tag_t *bt = NULL;
- dmu_object_info_t doi;
- dmu_buf_t *db;
-
- if (dmu_bonus_hold(os, obj, FTAG, &db) != 0)
- continue;
-
- dmu_object_info_from_db(db, &doi);
- if (doi.doi_bonus_size >= sizeof (*bt))
- bt = ztest_bt_bonus(db);
-
- if (bt && bt->bt_magic == BT_MAGIC) {
- ztest_bt_verify(bt, os, obj, doi.doi_dnodesize,
- bt->bt_offset, bt->bt_gen, bt->bt_txg,
- bt->bt_crtxg);
- ztest_verify_unused_bonus(db, bt, obj, os, bt->bt_gen);
- }
-
- dmu_buf_rele(db, FTAG);
- }
-}
-
-/* ARGSUSED */
-void
-ztest_dsl_prop_get_set(ztest_ds_t *zd, uint64_t id)
-{
- zfs_prop_t proplist[] = {
- ZFS_PROP_CHECKSUM,
- ZFS_PROP_COMPRESSION,
- ZFS_PROP_COPIES,
- ZFS_PROP_DEDUP
- };
-
- rw_enter(&ztest_name_lock, RW_READER);
-
- for (int p = 0; p < sizeof (proplist) / sizeof (proplist[0]); p++)
- (void) ztest_dsl_prop_set_uint64(zd->zd_name, proplist[p],
- ztest_random_dsl_prop(proplist[p]), (int)ztest_random(2));
-
- rw_exit(&ztest_name_lock);
-}
-
-/* ARGSUSED */
-void
-ztest_remap_blocks(ztest_ds_t *zd, uint64_t id)
-{
- rw_enter(&ztest_name_lock, RW_READER);
-
- int error = dmu_objset_remap_indirects(zd->zd_name);
- if (error == ENOSPC)
- error = 0;
- ASSERT0(error);
-
- rw_exit(&ztest_name_lock);
-}
-
-/* ARGSUSED */
-void
-ztest_spa_prop_get_set(ztest_ds_t *zd, uint64_t id)
-{
- nvlist_t *props = NULL;
-
- rw_enter(&ztest_name_lock, RW_READER);
-
- (void) ztest_spa_prop_set_uint64(ZPOOL_PROP_DEDUPDITTO,
- ZIO_DEDUPDITTO_MIN + ztest_random(ZIO_DEDUPDITTO_MIN));
-
- VERIFY0(spa_prop_get(ztest_spa, &props));
-
- if (ztest_opts.zo_verbose >= 6)
- dump_nvlist(props, 4);
-
- nvlist_free(props);
-
- rw_exit(&ztest_name_lock);
-}
-
-static int
-user_release_one(const char *snapname, const char *holdname)
-{
- nvlist_t *snaps, *holds;
- int error;
-
- snaps = fnvlist_alloc();
- holds = fnvlist_alloc();
- fnvlist_add_boolean(holds, holdname);
- fnvlist_add_nvlist(snaps, snapname, holds);
- fnvlist_free(holds);
- error = dsl_dataset_user_release(snaps, NULL);
- fnvlist_free(snaps);
- return (error);
-}
-
-/*
- * Test snapshot hold/release and deferred destroy.
- */
-void
-ztest_dmu_snapshot_hold(ztest_ds_t *zd, uint64_t id)
-{
- int error;
- objset_t *os = zd->zd_os;
- objset_t *origin;
- char snapname[100];
- char fullname[100];
- char clonename[100];
- char tag[100];
- char osname[ZFS_MAX_DATASET_NAME_LEN];
- nvlist_t *holds;
-
- rw_enter(&ztest_name_lock, RW_READER);
-
- dmu_objset_name(os, osname);
-
- (void) snprintf(snapname, sizeof (snapname), "sh1_%llu", id);
- (void) snprintf(fullname, sizeof (fullname), "%s@%s", osname, snapname);
- (void) snprintf(clonename, sizeof (clonename),
- "%s/ch1_%llu", osname, id);
- (void) snprintf(tag, sizeof (tag), "tag_%llu", id);
-
- /*
- * Clean up from any previous run.
- */
- error = dsl_destroy_head(clonename);
- if (error != ENOENT)
- ASSERT0(error);
- error = user_release_one(fullname, tag);
- if (error != ESRCH && error != ENOENT)
- ASSERT0(error);
- error = dsl_destroy_snapshot(fullname, B_FALSE);
- if (error != ENOENT)
- ASSERT0(error);
-
- /*
- * Create snapshot, clone it, mark snap for deferred destroy,
- * destroy clone, verify snap was also destroyed.
- */
- error = dmu_objset_snapshot_one(osname, snapname);
- if (error) {
- if (error == ENOSPC) {
- ztest_record_enospc("dmu_objset_snapshot");
- goto out;
- }
- fatal(0, "dmu_objset_snapshot(%s) = %d", fullname, error);
- }
-
- error = dmu_objset_clone(clonename, fullname);
- if (error) {
- if (error == ENOSPC) {
- ztest_record_enospc("dmu_objset_clone");
- goto out;
- }
- fatal(0, "dmu_objset_clone(%s) = %d", clonename, error);
- }
-
- error = dsl_destroy_snapshot(fullname, B_TRUE);
- if (error) {
- fatal(0, "dsl_destroy_snapshot(%s, B_TRUE) = %d",
- fullname, error);
- }
-
- error = dsl_destroy_head(clonename);
- if (error)
- fatal(0, "dsl_destroy_head(%s) = %d", clonename, error);
-
- error = dmu_objset_hold(fullname, FTAG, &origin);
- if (error != ENOENT)
- fatal(0, "dmu_objset_hold(%s) = %d", fullname, error);
-
- /*
- * Create snapshot, add temporary hold, verify that we can't
- * destroy a held snapshot, mark for deferred destroy,
- * release hold, verify snapshot was destroyed.
- */
- error = dmu_objset_snapshot_one(osname, snapname);
- if (error) {
- if (error == ENOSPC) {
- ztest_record_enospc("dmu_objset_snapshot");
- goto out;
- }
- fatal(0, "dmu_objset_snapshot(%s) = %d", fullname, error);
- }
-
- holds = fnvlist_alloc();
- fnvlist_add_string(holds, fullname, tag);
- error = dsl_dataset_user_hold(holds, 0, NULL);
- fnvlist_free(holds);
-
- if (error == ENOSPC) {
- ztest_record_enospc("dsl_dataset_user_hold");
- goto out;
- } else if (error) {
- fatal(0, "dsl_dataset_user_hold(%s, %s) = %u",
- fullname, tag, error);
- }
-
- error = dsl_destroy_snapshot(fullname, B_FALSE);
- if (error != EBUSY) {
- fatal(0, "dsl_destroy_snapshot(%s, B_FALSE) = %d",
- fullname, error);
- }
-
- error = dsl_destroy_snapshot(fullname, B_TRUE);
- if (error) {
- fatal(0, "dsl_destroy_snapshot(%s, B_TRUE) = %d",
- fullname, error);
- }
-
- error = user_release_one(fullname, tag);
- if (error)
- fatal(0, "user_release_one(%s, %s) = %d", fullname, tag, error);
-
- VERIFY3U(dmu_objset_hold(fullname, FTAG, &origin), ==, ENOENT);
-
-out:
- rw_exit(&ztest_name_lock);
-}
-
-/*
- * Inject random faults into the on-disk data.
- */
-/* ARGSUSED */
-void
-ztest_fault_inject(ztest_ds_t *zd, uint64_t id)
-{
- ztest_shared_t *zs = ztest_shared;
- spa_t *spa = ztest_spa;
- int fd;
- uint64_t offset;
- uint64_t leaves;
- uint64_t bad = 0x1990c0ffeedecadeULL;
- uint64_t top, leaf;
- char path0[MAXPATHLEN];
- char pathrand[MAXPATHLEN];
- size_t fsize;
- int bshift = SPA_MAXBLOCKSHIFT + 2;
- int iters = 1000;
- int maxfaults;
- int mirror_save;
- vdev_t *vd0 = NULL;
- uint64_t guid0 = 0;
- boolean_t islog = B_FALSE;
-
- mutex_enter(&ztest_vdev_lock);
-
- /*
- * Device removal is in progress, fault injection must be disabled
- * until it completes and the pool is scrubbed. The fault injection
- * strategy for damaging blocks does not take in to account evacuated
- * blocks which may have already been damaged.
- */
- if (ztest_device_removal_active) {
- mutex_exit(&ztest_vdev_lock);
- return;
- }
-
- maxfaults = MAXFAULTS();
- leaves = MAX(zs->zs_mirrors, 1) * ztest_opts.zo_raidz;
- mirror_save = zs->zs_mirrors;
- mutex_exit(&ztest_vdev_lock);
-
- ASSERT(leaves >= 1);
-
- /*
- * Grab the name lock as reader. There are some operations
- * which don't like to have their vdevs changed while
- * they are in progress (i.e. spa_change_guid). Those
- * operations will have grabbed the name lock as writer.
- */
- rw_enter(&ztest_name_lock, RW_READER);
-
- /*
- * 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 or slog device.
- */
- top = ztest_random_vdev_top(spa, B_TRUE);
- leaf = ztest_random(leaves) + zs->zs_splits;
-
- /*
- * 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,
- ztest_opts.zo_dir, ztest_opts.zo_pool,
- top * leaves + zs->zs_splits);
- (void) snprintf(pathrand, sizeof (pathrand), ztest_dev_template,
- ztest_opts.zo_dir, ztest_opts.zo_pool,
- top * leaves + leaf);
-
- vd0 = vdev_lookup_by_path(spa->spa_root_vdev, path0);
- if (vd0 != NULL && vd0->vdev_top->vdev_islog)
- islog = B_TRUE;
-
- /*
- * If the top-level vdev needs to be resilvered
- * then we only allow faults on the device that is
- * resilvering.
- */
- if (vd0 != NULL && maxfaults != 1 &&
- (!vdev_resilver_needed(vd0->vdev_top, NULL, NULL) ||
- vd0->vdev_resilver_txg != 0)) {
- /*
- * 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;
-
- zfs_dbgmsg("injecting fault to vdev %llu; maxfaults=%d",
- (long long)vd0->vdev_id, (int)maxfaults);
-
- 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);
- rw_exit(&ztest_name_lock);
- 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 */
- }
-
- spa_config_exit(spa, SCL_STATE, FTAG);
- rw_exit(&ztest_name_lock);
-
- /*
- * If we can tolerate two or more faults, or we're dealing
- * with a slog, randomly online/offline vd0.
- */
- if ((maxfaults >= 2 || islog) && guid0 != 0) {
- if (ztest_random(10) < 6) {
- int flags = (ztest_random(2) == 0 ?
- ZFS_OFFLINE_TEMPORARY : 0);
-
- /*
- * We have to grab the zs_name_lock as writer to
- * prevent a race between offlining a slog and
- * destroying a dataset. Offlining the slog will
- * grab a reference on the dataset which may cause
- * dmu_objset_destroy() to fail with EBUSY thus
- * leaving the dataset in an inconsistent state.
- */
- if (islog)
- rw_enter(&ztest_name_lock, RW_WRITER);
-
- VERIFY(vdev_offline(spa, guid0, flags) != EBUSY);
-
- if (islog)
- rw_exit(&ztest_name_lock);
- } else {
- /*
- * Ideally we would like to be able to randomly
- * call vdev_[on|off]line without holding locks
- * to force unpredictable failures but the side
- * effects of vdev_[on|off]line prevent us from
- * doing so. We grab the ztest_vdev_lock here to
- * prevent a race between injection testing and
- * aux_vdev removal.
- */
- mutex_enter(&ztest_vdev_lock);
- (void) vdev_online(spa, guid0, 0, NULL);
- mutex_exit(&ztest_vdev_lock);
- }
- }
-
- if (maxfaults == 0)
- return;
-
- /*
- * 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) {
- /*
- * The offset must be chosen carefully to ensure that
- * we do not inject a given logical block with errors
- * on two different leaf devices, because ZFS can not
- * tolerate that (if maxfaults==1).
- *
- * We divide each leaf into chunks of size
- * (# leaves * SPA_MAXBLOCKSIZE * 4). Within each chunk
- * there is a series of ranges to which we can inject errors.
- * Each range can accept errors on only a single leaf vdev.
- * The error injection ranges are separated by ranges
- * which we will not inject errors on any device (DMZs).
- * Each DMZ must be large enough such that a single block
- * can not straddle it, so that a single block can not be
- * a target in two different injection ranges (on different
- * leaf vdevs).
- *
- * For example, with 3 leaves, each chunk looks like:
- * 0 to 32M: injection range for leaf 0
- * 32M to 64M: DMZ - no injection allowed
- * 64M to 96M: injection range for leaf 1
- * 96M to 128M: DMZ - no injection allowed
- * 128M to 160M: injection range for leaf 2
- * 160M to 192M: DMZ - no injection allowed
- */
- offset = ztest_random(fsize / (leaves << bshift)) *
- (leaves << bshift) + (leaf << bshift) +
- (ztest_random(1ULL << (bshift - 1)) & -8ULL);
-
- /*
- * Only allow damage to the labels at one end of the vdev.
- *
- * If all labels are damaged, the device will be totally
- * inaccessible, which will result in loss of data,
- * because we also damage (parts of) the other side of
- * the mirror/raidz.
- *
- * Additionally, we will always have both an even and an
- * odd label, so that we can handle crashes in the
- * middle of vdev_config_sync().
- */
- if ((leaf & 1) == 0 && offset < VDEV_LABEL_START_SIZE)
- continue;
-
- /*
- * The two end labels are stored at the "end" of the disk, but
- * the end of the disk (vdev_psize) is aligned to
- * sizeof (vdev_label_t).
- */
- uint64_t psize = P2ALIGN(fsize, sizeof (vdev_label_t));
- if ((leaf & 1) == 1 &&
- offset + sizeof (bad) > psize - VDEV_LABEL_END_SIZE)
- continue;
-
- mutex_enter(&ztest_vdev_lock);
- if (mirror_save != zs->zs_mirrors) {
- mutex_exit(&ztest_vdev_lock);
- (void) close(fd);
- return;
- }
-
- if (pwrite(fd, &bad, sizeof (bad), offset) != sizeof (bad))
- fatal(1, "can't inject bad word at 0x%llx in %s",
- offset, pathrand);
-
- mutex_exit(&ztest_vdev_lock);
-
- if (ztest_opts.zo_verbose >= 7)
- (void) printf("injected bad word into %s,"
- " offset 0x%llx\n", pathrand, (u_longlong_t)offset);
- }
-
- (void) close(fd);
-}
-
-/*
- * Verify that DDT repair works as expected.
- */
-void
-ztest_ddt_repair(ztest_ds_t *zd, uint64_t id)
-{
- ztest_shared_t *zs = ztest_shared;
- spa_t *spa = ztest_spa;
- objset_t *os = zd->zd_os;
- ztest_od_t od[1];
- uint64_t object, blocksize, txg, pattern, psize;
- enum zio_checksum checksum = spa_dedup_checksum(spa);
- dmu_buf_t *db;
- dmu_tx_t *tx;
- abd_t *abd;
- blkptr_t blk;
- int copies = 2 * ZIO_DEDUPDITTO_MIN;
-
- blocksize = ztest_random_blocksize();
- blocksize = MIN(blocksize, 2048); /* because we write so many */
-
- ztest_od_init(&od[0], id, FTAG, 0, DMU_OT_UINT64_OTHER, blocksize,
- 0, 0);
-
- if (ztest_object_init(zd, od, sizeof (od), B_FALSE) != 0)
- return;
-
- /*
- * Take the name lock as writer to prevent anyone else from changing
- * the pool and dataset properies we need to maintain during this test.
- */
- rw_enter(&ztest_name_lock, RW_WRITER);
-
- if (ztest_dsl_prop_set_uint64(zd->zd_name, ZFS_PROP_DEDUP, checksum,
- B_FALSE) != 0 ||
- ztest_dsl_prop_set_uint64(zd->zd_name, ZFS_PROP_COPIES, 1,
- B_FALSE) != 0) {
- rw_exit(&ztest_name_lock);
- return;
- }
-
- dmu_objset_stats_t dds;
- dsl_pool_config_enter(dmu_objset_pool(os), FTAG);
- dmu_objset_fast_stat(os, &dds);
- dsl_pool_config_exit(dmu_objset_pool(os), FTAG);
-
- object = od[0].od_object;
- blocksize = od[0].od_blocksize;
- pattern = zs->zs_guid ^ dds.dds_guid;
-
- ASSERT(object != 0);
-
- tx = dmu_tx_create(os);
- dmu_tx_hold_write(tx, object, 0, copies * blocksize);
- txg = ztest_tx_assign(tx, TXG_WAIT, FTAG);
- if (txg == 0) {
- rw_exit(&ztest_name_lock);
- return;
- }
-
- /*
- * Write all the copies of our block.
- */
- for (int i = 0; i < copies; i++) {
- uint64_t offset = i * blocksize;
- int error = dmu_buf_hold(os, object, offset, FTAG, &db,
- DMU_READ_NO_PREFETCH);
- if (error != 0) {
- fatal(B_FALSE, "dmu_buf_hold(%p, %llu, %llu) = %u",
- os, (long long)object, (long long) offset, error);
- }
- ASSERT(db->db_offset == offset);
- ASSERT(db->db_size == blocksize);
- ASSERT(ztest_pattern_match(db->db_data, db->db_size, pattern) ||
- ztest_pattern_match(db->db_data, db->db_size, 0ULL));
- dmu_buf_will_fill(db, tx);
- ztest_pattern_set(db->db_data, db->db_size, pattern);
- dmu_buf_rele(db, FTAG);
- }
-
- dmu_tx_commit(tx);
- txg_wait_synced(spa_get_dsl(spa), txg);
-
- /*
- * Find out what block we got.
- */
- VERIFY0(dmu_buf_hold(os, object, 0, FTAG, &db,
- DMU_READ_NO_PREFETCH));
- blk = *((dmu_buf_impl_t *)db)->db_blkptr;
- dmu_buf_rele(db, FTAG);
-
- /*
- * Damage the block. Dedup-ditto will save us when we read it later.
- */
- psize = BP_GET_PSIZE(&blk);
- abd = abd_alloc_linear(psize, B_TRUE);
- ztest_pattern_set(abd_to_buf(abd), psize, ~pattern);
-
- (void) zio_wait(zio_rewrite(NULL, spa, 0, &blk,
- abd, psize, NULL, NULL, ZIO_PRIORITY_SYNC_WRITE,
- ZIO_FLAG_CANFAIL | ZIO_FLAG_INDUCE_DAMAGE, NULL));
-
- abd_free(abd);
-
- rw_exit(&ztest_name_lock);
-}
-
-/*
- * Scrub the pool.
- */
-/* ARGSUSED */
-void
-ztest_scrub(ztest_ds_t *zd, uint64_t id)
-{
- spa_t *spa = ztest_spa;
-
- /*
- * Scrub in progress by device removal.
- */
- if (ztest_device_removal_active)
- return;
-
- (void) spa_scan(spa, POOL_SCAN_SCRUB);
- (void) poll(NULL, 0, 100); /* wait a moment, then force a restart */
- (void) spa_scan(spa, POOL_SCAN_SCRUB);
-}
-
-/*
- * Change the guid for the pool.
- */
-/* ARGSUSED */
-void
-ztest_reguid(ztest_ds_t *zd, uint64_t id)
-{
- spa_t *spa = ztest_spa;
- uint64_t orig, load;
- int error;
-
- if (ztest_opts.zo_mmp_test)
- return;
-
- orig = spa_guid(spa);
- load = spa_load_guid(spa);
-
- rw_enter(&ztest_name_lock, RW_WRITER);
- error = spa_change_guid(spa);
- rw_exit(&ztest_name_lock);
-
- if (error != 0)
- return;
-
- if (ztest_opts.zo_verbose >= 4) {
- (void) printf("Changed guid old %llu -> %llu\n",
- (u_longlong_t)orig, (u_longlong_t)spa_guid(spa));
- }
-
- VERIFY3U(orig, !=, spa_guid(spa));
- VERIFY3U(load, ==, spa_load_guid(spa));
-}
-
-static vdev_t *
-ztest_random_concrete_vdev_leaf(vdev_t *vd)
-{
- if (vd == NULL)
- return (NULL);
-
- if (vd->vdev_children == 0)
- return (vd);
-
- vdev_t *eligible[vd->vdev_children];
- int eligible_idx = 0, i;
- for (i = 0; i < vd->vdev_children; i++) {
- vdev_t *cvd = vd->vdev_child[i];
- if (cvd->vdev_top->vdev_removing)
- continue;
- if (cvd->vdev_children > 0 ||
- (vdev_is_concrete(cvd) && !cvd->vdev_detached)) {
- eligible[eligible_idx++] = cvd;
- }
- }
- VERIFY(eligible_idx > 0);
-
- uint64_t child_no = ztest_random(eligible_idx);
- return (ztest_random_concrete_vdev_leaf(eligible[child_no]));
-}
-
-/* ARGSUSED */
-void
-ztest_initialize(ztest_ds_t *zd, uint64_t id)
-{
- spa_t *spa = ztest_spa;
- int error = 0;
-
- mutex_enter(&ztest_vdev_lock);
-
- spa_config_enter(spa, SCL_VDEV, FTAG, RW_READER);
-
- /* Random leaf vdev */
- vdev_t *rand_vd = ztest_random_concrete_vdev_leaf(spa->spa_root_vdev);
- if (rand_vd == NULL) {
- spa_config_exit(spa, SCL_VDEV, FTAG);
- mutex_exit(&ztest_vdev_lock);
- return;
- }
-
- /*
- * The random vdev we've selected may change as soon as we
- * drop the spa_config_lock. We create local copies of things
- * we're interested in.
- */
- uint64_t guid = rand_vd->vdev_guid;
- char *path = strdup(rand_vd->vdev_path);
- boolean_t active = rand_vd->vdev_initialize_thread != NULL;
-
- zfs_dbgmsg("vd %p, guid %llu", rand_vd, guid);
- spa_config_exit(spa, SCL_VDEV, FTAG);
-
- uint64_t cmd = ztest_random(POOL_INITIALIZE_FUNCS);
- error = spa_vdev_initialize(spa, guid, cmd);
- switch (cmd) {
- case POOL_INITIALIZE_CANCEL:
- if (ztest_opts.zo_verbose >= 4) {
- (void) printf("Cancel initialize %s", path);
- if (!active)
- (void) printf(" failed (no initialize active)");
- (void) printf("\n");
- }
- break;
- case POOL_INITIALIZE_DO:
- if (ztest_opts.zo_verbose >= 4) {
- (void) printf("Start initialize %s", path);
- if (active && error == 0)
- (void) printf(" failed (already active)");
- else if (error != 0)
- (void) printf(" failed (error %d)", error);
- (void) printf("\n");
- }
- break;
- case POOL_INITIALIZE_SUSPEND:
- if (ztest_opts.zo_verbose >= 4) {
- (void) printf("Suspend initialize %s", path);
- if (!active)
- (void) printf(" failed (no initialize active)");
- (void) printf("\n");
- }
- break;
- }
- free(path);
- mutex_exit(&ztest_vdev_lock);
-}
-
-/*
- * Verify pool integrity by running zdb.
- */
-static void
-ztest_run_zdb(char *pool)
-{
- int status;
- char zdb[MAXPATHLEN + MAXNAMELEN + 20];
- char zbuf[1024];
- char *bin;
- char *ztest;
- char *isa;
- int isalen;
- FILE *fp;
-
- strlcpy(zdb, "/usr/bin/ztest", sizeof(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 -bcc%s%s -G -d -U %s "
- "-o zfs_reconstruct_indirect_combinations_max=65536 %s",
- isalen,
- isa,
- ztest_opts.zo_verbose >= 3 ? "s" : "",
- ztest_opts.zo_verbose >= 4 ? "v" : "",
- spa_config_path,
- pool);
- free(isa);
-
- if (ztest_opts.zo_verbose >= 5)
- (void) printf("Executing %s\n", strstr(zdb, "zdb "));
-
- fp = popen(zdb, "r");
- assert(fp != NULL);
-
- while (fgets(zbuf, sizeof (zbuf), fp) != NULL)
- if (ztest_opts.zo_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 (ztest_opts.zo_verbose >= 6)
- (void) printf("%s\n", header);
-
- mutex_enter(&spa_namespace_lock);
- while ((spa = spa_next(spa)) != NULL)
- if (ztest_opts.zo_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, *newconfig;
- uint64_t pool_guid;
- spa_t *spa;
- int error;
-
- if (ztest_opts.zo_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.
- */
- VERIFY3U(0, ==, spa_open(oldname, &spa, FTAG));
-
- /*
- * Kick off a scrub to tickle scrub/export races.
- */
- if (ztest_random(2) == 0)
- (void) spa_scan(spa, POOL_SCAN_SCRUB);
-
- pool_guid = spa_guid(spa);
- spa_close(spa, FTAG);
-
- ztest_walk_pool_directory("pools before export");
-
- /*
- * Export it.
- */
- VERIFY3U(0, ==, spa_export(oldname, &config, B_FALSE, B_FALSE));
-
- ztest_walk_pool_directory("pools after export");
-
- /*
- * Try to import it.
- */
- newconfig = spa_tryimport(config);
- ASSERT(newconfig != NULL);
- nvlist_free(newconfig);
-
- /*
- * Import it under the new name.
- */
- error = spa_import(newname, config, NULL, 0);
- if (error != 0) {
- dump_nvlist(config, 0);
- fatal(B_FALSE, "couldn't import pool %s as %s: error %u",
- oldname, newname, error);
- }
-
- ztest_walk_pool_directory("pools after import");
-
- /*
- * Try to import it again -- should fail with EEXIST.
- */
- VERIFY3U(EEXIST, ==, spa_import(newname, config, NULL, 0));
-
- /*
- * Try to import it under a different name -- should fail with EEXIST.
- */
- VERIFY3U(EEXIST, ==, spa_import(oldname, config, NULL, 0));
-
- /*
- * Verify that the pool is no longer visible under the old name.
- */
- VERIFY3U(ENOENT, ==, spa_open(oldname, &spa, FTAG));
-
- /*
- * Verify that we can open and close the pool using the new name.
- */
- VERIFY3U(0, ==, spa_open(newname, &spa, FTAG));
- ASSERT(pool_guid == spa_guid(spa));
- spa_close(spa, FTAG);
-
- nvlist_free(config);
-}
-
-static void
-ztest_resume(spa_t *spa)
-{
- if (spa_suspended(spa) && ztest_opts.zo_verbose >= 6)
- (void) printf("resuming from suspended state\n");
- spa_vdev_state_enter(spa, SCL_NONE);
- vdev_clear(spa, NULL);
- (void) spa_vdev_state_exit(spa, NULL, 0);
- (void) zio_resume(spa);
-}
-
-static void *
-ztest_resume_thread(void *arg)
-{
- spa_t *spa = arg;
-
- while (!ztest_exiting) {
- if (spa_suspended(spa))
- ztest_resume(spa);
- (void) poll(NULL, 0, 100);
-
- /*
- * Periodically change the zfs_compressed_arc_enabled setting.
- */
- if (ztest_random(10) == 0)
- zfs_compressed_arc_enabled = ztest_random(2);
-
- /*
- * Periodically change the zfs_abd_scatter_enabled setting.
- */
- if (ztest_random(10) == 0)
- zfs_abd_scatter_enabled = ztest_random(2);
- }
- return (NULL);
-}
-
-static void *
-ztest_deadman_thread(void *arg)
-{
- ztest_shared_t *zs = arg;
- spa_t *spa = ztest_spa;
- hrtime_t delta, total = 0;
-
- for (;;) {
- delta = zs->zs_thread_stop - zs->zs_thread_start +
- MSEC2NSEC(zfs_deadman_synctime_ms);
-
- (void) poll(NULL, 0, (int)NSEC2MSEC(delta));
-
- /*
- * If the pool is suspended then fail immediately. Otherwise,
- * check to see if the pool is making any progress. If
- * vdev_deadman() discovers that there hasn't been any recent
- * I/Os then it will end up aborting the tests.
- */
- if (spa_suspended(spa) || spa->spa_root_vdev == NULL) {
- fatal(0, "aborting test after %llu seconds because "
- "pool has transitioned to a suspended state.",
- zfs_deadman_synctime_ms / 1000);
- return (NULL);
- }
- vdev_deadman(spa->spa_root_vdev);
-
- total += zfs_deadman_synctime_ms/1000;
- (void) printf("ztest has been running for %lld seconds\n",
- total);
- }
-}
-
-static void
-ztest_execute(int test, ztest_info_t *zi, uint64_t id)
-{
- ztest_ds_t *zd = &ztest_ds[id % ztest_opts.zo_datasets];
- ztest_shared_callstate_t *zc = ZTEST_GET_SHARED_CALLSTATE(test);
- hrtime_t functime = gethrtime();
-
- for (int i = 0; i < zi->zi_iters; i++)
- zi->zi_func(zd, id);
-
- functime = gethrtime() - functime;
-
- atomic_add_64(&zc->zc_count, 1);
- atomic_add_64(&zc->zc_time, functime);
-
- if (ztest_opts.zo_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);
- }
-}
-
-static void *
-ztest_thread(void *arg)
-{
- int rand;
- uint64_t id = (uintptr_t)arg;
- ztest_shared_t *zs = ztest_shared;
- uint64_t call_next;
- hrtime_t now;
- ztest_info_t *zi;
- ztest_shared_callstate_t *zc;
-
- while ((now = gethrtime()) < zs->zs_thread_stop) {
- /*
- * See if it's time to force a crash.
- */
- if (now > zs->zs_thread_kill)
- ztest_kill(zs);
-
- /*
- * If we're getting ENOSPC with some regularity, stop.
- */
- if (zs->zs_enospc_count > 10)
- break;
-
- /*
- * Pick a random function to execute.
- */
- rand = ztest_random(ZTEST_FUNCS);
- zi = &ztest_info[rand];
- zc = ZTEST_GET_SHARED_CALLSTATE(rand);
- call_next = zc->zc_next;
-
- if (now >= call_next &&
- atomic_cas_64(&zc->zc_next, call_next, call_next +
- ztest_random(2 * zi->zi_interval[0] + 1)) == call_next) {
- ztest_execute(rand, zi, id);
- }
- }
-
- return (NULL);
-}
-
-static void
-ztest_dataset_name(char *dsname, char *pool, int d)
-{
- (void) snprintf(dsname, ZFS_MAX_DATASET_NAME_LEN, "%s/ds_%d", pool, d);
-}
-
-static void
-ztest_dataset_destroy(int d)
-{
- char name[ZFS_MAX_DATASET_NAME_LEN];
-
- ztest_dataset_name(name, ztest_opts.zo_pool, d);
-
- if (ztest_opts.zo_verbose >= 3)
- (void) printf("Destroying %s to free up space\n", name);
-
- /*
- * Cleanup any non-standard clones and snapshots. In general,
- * ztest thread t operates on dataset (t % zopt_datasets),
- * so there may be more than one thing to clean up.
- */
- for (int t = d; t < ztest_opts.zo_threads;
- t += ztest_opts.zo_datasets) {
- ztest_dsl_dataset_cleanup(name, t);
- }
-
- (void) dmu_objset_find(name, ztest_objset_destroy_cb, NULL,
- DS_FIND_SNAPSHOTS | DS_FIND_CHILDREN);
-}
-
-static void
-ztest_dataset_dirobj_verify(ztest_ds_t *zd)
-{
- uint64_t usedobjs, dirobjs, scratch;
-
- /*
- * ZTEST_DIROBJ is the object directory for the entire dataset.
- * Therefore, the number of objects in use should equal the
- * number of ZTEST_DIROBJ entries, +1 for ZTEST_DIROBJ itself.
- * If not, we have an object leak.
- *
- * Note that we can only check this in ztest_dataset_open(),
- * when the open-context and syncing-context values agree.
- * That's because zap_count() returns the open-context value,
- * while dmu_objset_space() returns the rootbp fill count.
- */
- VERIFY3U(0, ==, zap_count(zd->zd_os, ZTEST_DIROBJ, &dirobjs));
- dmu_objset_space(zd->zd_os, &scratch, &scratch, &usedobjs, &scratch);
- ASSERT3U(dirobjs + 1, ==, usedobjs);
-}
-
-static int
-ztest_dataset_open(int d)
-{
- ztest_ds_t *zd = &ztest_ds[d];
- uint64_t committed_seq = ZTEST_GET_SHARED_DS(d)->zd_seq;
- objset_t *os;
- zilog_t *zilog;
- char name[ZFS_MAX_DATASET_NAME_LEN];
- int error;
-
- ztest_dataset_name(name, ztest_opts.zo_pool, d);
-
- rw_enter(&ztest_name_lock, RW_READER);
-
- error = ztest_dataset_create(name);
- if (error == ENOSPC) {
- rw_exit(&ztest_name_lock);
- ztest_record_enospc(FTAG);
- return (error);
- }
- ASSERT(error == 0 || error == EEXIST);
-
- VERIFY0(dmu_objset_own(name, DMU_OST_OTHER, B_FALSE, zd, &os));
- rw_exit(&ztest_name_lock);
-
- ztest_zd_init(zd, ZTEST_GET_SHARED_DS(d), os);
-
- zilog = zd->zd_zilog;
-
- if (zilog->zl_header->zh_claim_lr_seq != 0 &&
- zilog->zl_header->zh_claim_lr_seq < committed_seq)
- fatal(0, "missing log records: claimed %llu < committed %llu",
- zilog->zl_header->zh_claim_lr_seq, committed_seq);
-
- ztest_dataset_dirobj_verify(zd);
-
- zil_replay(os, zd, ztest_replay_vector);
-
- ztest_dataset_dirobj_verify(zd);
-
- if (ztest_opts.zo_verbose >= 6)
- (void) printf("%s replay %llu blocks, %llu records, seq %llu\n",
- zd->zd_name,
- (u_longlong_t)zilog->zl_parse_blk_count,
- (u_longlong_t)zilog->zl_parse_lr_count,
- (u_longlong_t)zilog->zl_replaying_seq);
-
- zilog = zil_open(os, ztest_get_data);
-
- if (zilog->zl_replaying_seq != 0 &&
- zilog->zl_replaying_seq < committed_seq)
- fatal(0, "missing log records: replayed %llu < committed %llu",
- zilog->zl_replaying_seq, committed_seq);
-
- return (0);
-}
-
-static void
-ztest_dataset_close(int d)
-{
- ztest_ds_t *zd = &ztest_ds[d];
-
- zil_close(zd->zd_zilog);
- dmu_objset_disown(zd->zd_os, zd);
-
- ztest_zd_fini(zd);
-}
-
-/*
- * Kick off threads to run tests on all datasets in parallel.
- */
-static void
-ztest_run(ztest_shared_t *zs)
-{
- thread_t *tid;
- spa_t *spa;
- objset_t *os;
- thread_t resume_tid;
- int error;
-
- ztest_exiting = B_FALSE;
-
- /*
- * Initialize parent/child shared state.
- */
- mutex_init(&ztest_checkpoint_lock, NULL, USYNC_THREAD, NULL);
- mutex_init(&ztest_vdev_lock, NULL, USYNC_THREAD, NULL);
- rw_init(&ztest_name_lock, NULL, USYNC_THREAD, NULL);
-
- zs->zs_thread_start = gethrtime();
- zs->zs_thread_stop =
- zs->zs_thread_start + ztest_opts.zo_passtime * NANOSEC;
- zs->zs_thread_stop = MIN(zs->zs_thread_stop, zs->zs_proc_stop);
- zs->zs_thread_kill = zs->zs_thread_stop;
- if (ztest_random(100) < ztest_opts.zo_killrate) {
- zs->zs_thread_kill -=
- ztest_random(ztest_opts.zo_passtime * NANOSEC);
- }
-
- mutex_init(&zcl.zcl_callbacks_lock, NULL, USYNC_THREAD, NULL);
-
- list_create(&zcl.zcl_callbacks, sizeof (ztest_cb_data_t),
- offsetof(ztest_cb_data_t, zcd_node));
-
- /*
- * Open our pool.
- */
- kernel_init(FREAD | FWRITE);
- VERIFY0(spa_open(ztest_opts.zo_pool, &spa, FTAG));
- metaslab_preload_limit = ztest_random(20) + 1;
- ztest_spa = spa;
-
- dmu_objset_stats_t dds;
- VERIFY0(dmu_objset_own(ztest_opts.zo_pool,
- DMU_OST_ANY, B_TRUE, FTAG, &os));
- dsl_pool_config_enter(dmu_objset_pool(os), FTAG);
- dmu_objset_fast_stat(os, &dds);
- dsl_pool_config_exit(dmu_objset_pool(os), FTAG);
- zs->zs_guid = dds.dds_guid;
- dmu_objset_disown(os, FTAG);
-
- spa->spa_dedup_ditto = 2 * ZIO_DEDUPDITTO_MIN;
-
- /*
- * We don't expect the pool to suspend unless maxfaults == 0,
- * in which case ztest_fault_inject() temporarily takes away
- * the only valid replica.
- */
- if (MAXFAULTS() == 0)
- spa->spa_failmode = ZIO_FAILURE_MODE_WAIT;
- else
- spa->spa_failmode = ZIO_FAILURE_MODE_PANIC;
-
- /*
- * Create a thread to periodically resume suspended I/O.
- */
- VERIFY(thr_create(0, 0, ztest_resume_thread, spa, THR_BOUND,
- &resume_tid) == 0);
-
- /*
- * Create a deadman thread to abort() if we hang.
- */
- VERIFY(thr_create(0, 0, ztest_deadman_thread, zs, THR_BOUND,
- NULL) == 0);
-
- /*
- * Verify that we can safely inquire 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 (int t = 0; t < 64; t++) {
- for (int d = -5; d <= 5; d++) {
- error = dmu_object_info(spa->spa_meta_objset,
- (1ULL << t) + d, NULL);
- ASSERT(error == 0 || error == ENOENT ||
- error == EINVAL);
- }
- }
-
- /*
- * If we got any ENOSPC errors on the previous run, destroy something.
- */
- if (zs->zs_enospc_count != 0) {
- int d = ztest_random(ztest_opts.zo_datasets);
- ztest_dataset_destroy(d);
- }
- zs->zs_enospc_count = 0;
-
- tid = umem_zalloc(ztest_opts.zo_threads * sizeof (thread_t),
- UMEM_NOFAIL);
-
- if (ztest_opts.zo_verbose >= 4)
- (void) printf("starting main threads...\n");
-
- /*
- * Kick off all the tests that run in parallel.
- */
- for (int t = 0; t < ztest_opts.zo_threads; t++) {
- if (t < ztest_opts.zo_datasets &&
- ztest_dataset_open(t) != 0)
- return;
- VERIFY(thr_create(0, 0, ztest_thread, (void *)(uintptr_t)t,
- THR_BOUND, &tid[t]) == 0);
- }
-
- /*
- * Wait for all of the tests to complete. We go in reverse order
- * so we don't close datasets while threads are still using them.
- */
- for (int t = ztest_opts.zo_threads - 1; t >= 0; t--) {
- VERIFY(thr_join(tid[t], NULL, NULL) == 0);
- if (t < ztest_opts.zo_datasets)
- ztest_dataset_close(t);
- }
-
- txg_wait_synced(spa_get_dsl(spa), 0);
-
- zs->zs_alloc = metaslab_class_get_alloc(spa_normal_class(spa));
- zs->zs_space = metaslab_class_get_space(spa_normal_class(spa));
- zfs_dbgmsg_print(FTAG);
-
- umem_free(tid, ztest_opts.zo_threads * sizeof (thread_t));
-
- /* Kill the resume thread */
- ztest_exiting = B_TRUE;
- VERIFY(thr_join(resume_tid, NULL, NULL) == 0);
- ztest_resume(spa);
-
- /*
- * Right before closing the pool, kick off a bunch of async I/O;
- * spa_close() should wait for it to complete.
- */
- for (uint64_t object = 1; object < 50; object++) {
- dmu_prefetch(spa->spa_meta_objset, object, 0, 0, 1ULL << 20,
- ZIO_PRIORITY_SYNC_READ);
- }
-
- spa_close(spa, FTAG);
-
- /*
- * 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 (ztest_opts.zo_verbose > 3)
- (void) printf("spa_next: found %s\n", spa_name(spa));
- mutex_exit(&spa_namespace_lock);
-
- /*
- * Verify that we can export the pool and reimport it under a
- * different name.
- */
- if ((ztest_random(2) == 0) && !ztest_opts.zo_mmp_test) {
- char name[ZFS_MAX_DATASET_NAME_LEN];
- (void) snprintf(name, sizeof (name), "%s_import",
- ztest_opts.zo_pool);
- ztest_spa_import_export(ztest_opts.zo_pool, name);
- ztest_spa_import_export(name, ztest_opts.zo_pool);
- }
-
- kernel_fini();
-
- list_destroy(&zcl.zcl_callbacks);
-
- mutex_destroy(&zcl.zcl_callbacks_lock);
-
- rw_destroy(&ztest_name_lock);
- mutex_destroy(&ztest_vdev_lock);
- mutex_destroy(&ztest_checkpoint_lock);
-}
-
-static void
-ztest_freeze(void)
-{
- ztest_ds_t *zd = &ztest_ds[0];
- spa_t *spa;
- int numloops = 0;
-
- if (ztest_opts.zo_verbose >= 3)
- (void) printf("testing spa_freeze()...\n");
-
- kernel_init(FREAD | FWRITE);
- VERIFY3U(0, ==, spa_open(ztest_opts.zo_pool, &spa, FTAG));
- VERIFY3U(0, ==, ztest_dataset_open(0));
- ztest_spa = spa;
-
- /*
- * Force the first log block to be transactionally allocated.
- * We have to do this before we freeze the pool -- otherwise
- * the log chain won't be anchored.
- */
- while (BP_IS_HOLE(&zd->zd_zilog->zl_header->zh_log)) {
- ztest_dmu_object_alloc_free(zd, 0);
- zil_commit(zd->zd_zilog, 0);
- }
-
- txg_wait_synced(spa_get_dsl(spa), 0);
-
- /*
- * Freeze the pool. This stops spa_sync() from doing anything,
- * so that the only way to record changes from now on is the ZIL.
- */
- spa_freeze(spa);
-
- /*
- * Because it is hard to predict how much space a write will actually
- * require beforehand, we leave ourselves some fudge space to write over
- * capacity.
- */
- uint64_t capacity = metaslab_class_get_space(spa_normal_class(spa)) / 2;
-
- /*
- * Run tests that generate log records but don't alter the pool config
- * or depend on DSL sync tasks (snapshots, objset create/destroy, etc).
- * We do a txg_wait_synced() after each iteration to force the txg
- * to increase well beyond the last synced value in the uberblock.
- * The ZIL should be OK with that.
- *
- * Run a random number of times less than zo_maxloops and ensure we do
- * not run out of space on the pool.
- */
- while (ztest_random(10) != 0 &&
- numloops++ < ztest_opts.zo_maxloops &&
- metaslab_class_get_alloc(spa_normal_class(spa)) < capacity) {
- ztest_od_t od;
- ztest_od_init(&od, 0, FTAG, 0, DMU_OT_UINT64_OTHER, 0, 0, 0);
- VERIFY0(ztest_object_init(zd, &od, sizeof (od), B_FALSE));
- ztest_io(zd, od.od_object,
- ztest_random(ZTEST_RANGE_LOCKS) << SPA_MAXBLOCKSHIFT);
- txg_wait_synced(spa_get_dsl(spa), 0);
- }
-
- /*
- * Commit all of the changes we just generated.
- */
- zil_commit(zd->zd_zilog, 0);
- txg_wait_synced(spa_get_dsl(spa), 0);
-
- /*
- * Close our dataset and close the pool.
- */
- ztest_dataset_close(0);
- spa_close(spa, FTAG);
- kernel_fini();
-
- /*
- * Open and close the pool and dataset to induce log replay.
- */
- kernel_init(FREAD | FWRITE);
- VERIFY3U(0, ==, spa_open(ztest_opts.zo_pool, &spa, FTAG));
- ASSERT(spa_freeze_txg(spa) == UINT64_MAX);
- VERIFY3U(0, ==, ztest_dataset_open(0));
- ztest_dataset_close(0);
-
- ztest_spa = spa;
- txg_wait_synced(spa_get_dsl(spa), 0);
- ztest_reguid(NULL, 0);
-
- 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);
-}
-
-static nvlist_t *
-make_random_props()
-{
- nvlist_t *props;
-
- VERIFY(nvlist_alloc(&props, NV_UNIQUE_NAME, 0) == 0);
-
- if (ztest_random(2) == 0)
- return (props);
- VERIFY(nvlist_add_uint64(props, "autoreplace", 1) == 0);
-
- return (props);
-}
-
-/*
- * Import a storage pool with the given name.
- */
-static void
-ztest_import(ztest_shared_t *zs)
-{
- libzfs_handle_t *hdl;
- importargs_t args = { 0 };
- spa_t *spa;
- nvlist_t *cfg = NULL;
- int nsearch = 1;
- char *searchdirs[nsearch];
- char *name = ztest_opts.zo_pool;
- int flags = ZFS_IMPORT_MISSING_LOG;
- int error;
-
- mutex_init(&ztest_vdev_lock, NULL, MUTEX_DEFAULT, NULL);
- rw_init(&ztest_name_lock, NULL, USYNC_THREAD, NULL);
-
- kernel_init(FREAD | FWRITE);
- hdl = libzfs_init();
-
- searchdirs[0] = ztest_opts.zo_dir;
- args.paths = nsearch;
- args.path = searchdirs;
- args.can_be_active = B_FALSE;
-
- error = zpool_tryimport(hdl, name, &cfg, &args);
- if (error)
- (void) fatal(0, "No pools found\n");
-
- VERIFY0(spa_import(name, cfg, NULL, flags));
- VERIFY0(spa_open(name, &spa, FTAG));
- zs->zs_metaslab_sz =
- 1ULL << spa->spa_root_vdev->vdev_child[0]->vdev_ms_shift;
- spa_close(spa, FTAG);
-
- libzfs_fini(hdl);
- kernel_fini();
-
- if (!ztest_opts.zo_mmp_test) {
- ztest_run_zdb(ztest_opts.zo_pool);
- ztest_freeze();
- ztest_run_zdb(ztest_opts.zo_pool);
- }
-
- rw_destroy(&ztest_name_lock);
- mutex_destroy(&ztest_vdev_lock);
-}
-
-/*
- * Create a storage pool with the given name and initial vdev size.
- * Then test spa_freeze() functionality.
- */
-static void
-ztest_init(ztest_shared_t *zs)
-{
- spa_t *spa;
- nvlist_t *nvroot, *props;
-
- mutex_init(&ztest_vdev_lock, NULL, USYNC_THREAD, NULL);
- mutex_init(&ztest_checkpoint_lock, NULL, USYNC_THREAD, NULL);
- rw_init(&ztest_name_lock, NULL, USYNC_THREAD, NULL);
-
- kernel_init(FREAD | FWRITE);
-
- /*
- * Create the storage pool.
- */
- (void) spa_destroy(ztest_opts.zo_pool);
- ztest_shared->zs_vdev_next_leaf = 0;
- zs->zs_splits = 0;
- zs->zs_mirrors = ztest_opts.zo_mirrors;
- nvroot = make_vdev_root(NULL, NULL, NULL, ztest_opts.zo_vdev_size, 0,
- NULL, ztest_opts.zo_raidz, zs->zs_mirrors, 1);
- props = make_random_props();
- for (int i = 0; i < SPA_FEATURES; i++) {
- char buf[1024];
- (void) snprintf(buf, sizeof (buf), "feature@%s",
- spa_feature_table[i].fi_uname);
- VERIFY3U(0, ==, nvlist_add_uint64(props, buf, 0));
- }
- VERIFY3U(0, ==, spa_create(ztest_opts.zo_pool, nvroot, props, NULL));
- nvlist_free(nvroot);
- nvlist_free(props);
-
- VERIFY3U(0, ==, spa_open(ztest_opts.zo_pool, &spa, FTAG));
- zs->zs_metaslab_sz =
- 1ULL << spa->spa_root_vdev->vdev_child[0]->vdev_ms_shift;
-
- spa_close(spa, FTAG);
-
- kernel_fini();
-
- if (!ztest_opts.zo_mmp_test) {
- ztest_run_zdb(ztest_opts.zo_pool);
- ztest_freeze();
- ztest_run_zdb(ztest_opts.zo_pool);
- }
-
- rw_destroy(&ztest_name_lock);
- mutex_destroy(&ztest_vdev_lock);
- mutex_destroy(&ztest_checkpoint_lock);
-}
-
-static void
-setup_data_fd(void)
-{
- static char ztest_name_data[] = "/tmp/ztest.data.XXXXXX";
-
- ztest_fd_data = mkstemp(ztest_name_data);
- ASSERT3S(ztest_fd_data, >=, 0);
- (void) unlink(ztest_name_data);
-}
-
-
-static int
-shared_data_size(ztest_shared_hdr_t *hdr)
-{
- int size;
-
- size = hdr->zh_hdr_size;
- size += hdr->zh_opts_size;
- size += hdr->zh_size;
- size += hdr->zh_stats_size * hdr->zh_stats_count;
- size += hdr->zh_ds_size * hdr->zh_ds_count;
-
- return (size);
-}
-
-static void
-setup_hdr(void)
-{
- int size;
- ztest_shared_hdr_t *hdr;
-
- hdr = (void *)mmap(0, P2ROUNDUP(sizeof (*hdr), getpagesize()),
- PROT_READ | PROT_WRITE, MAP_SHARED, ztest_fd_data, 0);
- ASSERT(hdr != MAP_FAILED);
-
- VERIFY3U(0, ==, ftruncate(ztest_fd_data, sizeof (ztest_shared_hdr_t)));
-
- hdr->zh_hdr_size = sizeof (ztest_shared_hdr_t);
- hdr->zh_opts_size = sizeof (ztest_shared_opts_t);
- hdr->zh_size = sizeof (ztest_shared_t);
- hdr->zh_stats_size = sizeof (ztest_shared_callstate_t);
- hdr->zh_stats_count = ZTEST_FUNCS;
- hdr->zh_ds_size = sizeof (ztest_shared_ds_t);
- hdr->zh_ds_count = ztest_opts.zo_datasets;
-
- size = shared_data_size(hdr);
- VERIFY3U(0, ==, ftruncate(ztest_fd_data, size));
-
- (void) munmap((caddr_t)hdr, P2ROUNDUP(sizeof (*hdr), getpagesize()));
-}
-
-static void
-setup_data(void)
-{
- int size, offset;
- ztest_shared_hdr_t *hdr;
- uint8_t *buf;
-
- hdr = (void *)mmap(0, P2ROUNDUP(sizeof (*hdr), getpagesize()),
- PROT_READ, MAP_SHARED, ztest_fd_data, 0);
- ASSERT(hdr != MAP_FAILED);
-
- size = shared_data_size(hdr);
-
- (void) munmap((caddr_t)hdr, P2ROUNDUP(sizeof (*hdr), getpagesize()));
- hdr = ztest_shared_hdr = (void *)mmap(0, P2ROUNDUP(size, getpagesize()),
- PROT_READ | PROT_WRITE, MAP_SHARED, ztest_fd_data, 0);
- ASSERT(hdr != MAP_FAILED);
- buf = (uint8_t *)hdr;
-
- offset = hdr->zh_hdr_size;
- ztest_shared_opts = (void *)&buf[offset];
- offset += hdr->zh_opts_size;
- ztest_shared = (void *)&buf[offset];
- offset += hdr->zh_size;
- ztest_shared_callstate = (void *)&buf[offset];
- offset += hdr->zh_stats_size * hdr->zh_stats_count;
- ztest_shared_ds = (void *)&buf[offset];
-}
-
-static boolean_t
-exec_child(char *cmd, char *libpath, boolean_t ignorekill, int *statusp)
-{
- pid_t pid;
- int status;
- char *cmdbuf = NULL;
-
- pid = fork();
-
- if (cmd == NULL) {
- cmdbuf = umem_alloc(MAXPATHLEN, UMEM_NOFAIL);
- (void) strlcpy(cmdbuf, getexecname(), MAXPATHLEN);
- cmd = cmdbuf;
- }
-
- if (pid == -1)
- fatal(1, "fork failed");
-
- if (pid == 0) { /* child */
- char *emptyargv[2] = { cmd, NULL };
- char fd_data_str[12];
-
- struct rlimit rl = { 1024, 1024 };
- (void) setrlimit(RLIMIT_NOFILE, &rl);
-
- (void) close(ztest_fd_rand);
- VERIFY3U(11, >=,
- snprintf(fd_data_str, 12, "%d", ztest_fd_data));
- VERIFY0(setenv("ZTEST_FD_DATA", fd_data_str, 1));
-
- (void) enable_extended_FILE_stdio(-1, -1);
- if (libpath != NULL)
- VERIFY(0 == setenv("LD_LIBRARY_PATH", libpath, 1));
-#ifdef illumos
- (void) execv(cmd, emptyargv);
-#else
- (void) execvp(cmd, emptyargv);
-#endif
- ztest_dump_core = B_FALSE;
- fatal(B_TRUE, "exec failed: %s", cmd);
- }
-
- if (cmdbuf != NULL) {
- umem_free(cmdbuf, MAXPATHLEN);
- cmd = NULL;
- }
-
- while (waitpid(pid, &status, 0) != pid)
- continue;
- if (statusp != NULL)
- *statusp = status;
-
- if (WIFEXITED(status)) {
- if (WEXITSTATUS(status) != 0) {
- (void) fprintf(stderr, "child exited with code %d\n",
- WEXITSTATUS(status));
- exit(2);
- }
- return (B_FALSE);
- } else if (WIFSIGNALED(status)) {
- if (!ignorekill || WTERMSIG(status) != SIGKILL) {
- (void) fprintf(stderr, "child died with signal %d\n",
- WTERMSIG(status));
- exit(3);
- }
- return (B_TRUE);
- } else {
- (void) fprintf(stderr, "something strange happened to child\n");
- exit(4);
- /* NOTREACHED */
- }
-}
-
-static void
-ztest_run_init(void)
-{
- ztest_shared_t *zs = ztest_shared;
-
- /*
- * Blow away any existing copy of zpool.cache
- */
- (void) remove(spa_config_path);
-
- if (ztest_opts.zo_init == 0) {
- if (ztest_opts.zo_verbose >= 1)
- (void) printf("Importing pool %s\n",
- ztest_opts.zo_pool);
- ztest_import(zs);
- return;
- }
-
- /*
- * Create and initialize our storage pool.
- */
- for (int i = 1; i <= ztest_opts.zo_init; i++) {
- bzero(zs, sizeof (ztest_shared_t));
- if (ztest_opts.zo_verbose >= 3 &&
- ztest_opts.zo_init != 1) {
- (void) printf("ztest_init(), pass %d\n", i);
- }
- ztest_init(zs);
- }
-}
-
-int
-main(int argc, char **argv)
-{
- int kills = 0;
- int iters = 0;
- int older = 0;
- int newer = 0;
- ztest_shared_t *zs;
- ztest_info_t *zi;
- ztest_shared_callstate_t *zc;
- char timebuf[100];
- char numbuf[NN_NUMBUF_SZ];
- char *cmd;
- boolean_t hasalt;
- char *fd_data_str = getenv("ZTEST_FD_DATA");
-
- (void) setvbuf(stdout, NULL, _IOLBF, 0);
-
- dprintf_setup(&argc, argv);
- zfs_deadman_synctime_ms = 300000;
- /*
- * As two-word space map entries may not come up often (especially
- * if pool and vdev sizes are small) we want to force at least some
- * of them so the feature get tested.
- */
- zfs_force_some_double_word_sm_entries = B_TRUE;
-
- /*
- * Verify that even extensively damaged split blocks with many
- * segments can be reconstructed in a reasonable amount of time
- * when reconstruction is known to be possible.
- */
- zfs_reconstruct_indirect_damage_fraction = 4;
-
- ztest_fd_rand = open("/dev/urandom", O_RDONLY);
- ASSERT3S(ztest_fd_rand, >=, 0);
-
- if (!fd_data_str) {
- process_options(argc, argv);
-
- setup_data_fd();
- setup_hdr();
- setup_data();
- bcopy(&ztest_opts, ztest_shared_opts,
- sizeof (*ztest_shared_opts));
- } else {
- ztest_fd_data = atoi(fd_data_str);
- setup_data();
- bcopy(ztest_shared_opts, &ztest_opts, sizeof (ztest_opts));
- }
- ASSERT3U(ztest_opts.zo_datasets, ==, ztest_shared_hdr->zh_ds_count);
-
- /* Override location of zpool.cache */
- VERIFY3U(asprintf((char **)&spa_config_path, "%s/zpool.cache",
- ztest_opts.zo_dir), !=, -1);
-
- ztest_ds = umem_alloc(ztest_opts.zo_datasets * sizeof (ztest_ds_t),
- UMEM_NOFAIL);
- zs = ztest_shared;
-
- if (fd_data_str) {
- metaslab_force_ganging = ztest_opts.zo_metaslab_force_ganging;
- metaslab_df_alloc_threshold =
- zs->zs_metaslab_df_alloc_threshold;
-
- if (zs->zs_do_init)
- ztest_run_init();
- else
- ztest_run(zs);
- exit(0);
- }
-
- hasalt = (strlen(ztest_opts.zo_alt_ztest) != 0);
-
- if (ztest_opts.zo_verbose >= 1) {
- (void) printf("%llu vdevs, %d datasets, %d threads,"
- " %llu seconds...\n",
- (u_longlong_t)ztest_opts.zo_vdevs,
- ztest_opts.zo_datasets,
- ztest_opts.zo_threads,
- (u_longlong_t)ztest_opts.zo_time);
- }
-
- cmd = umem_alloc(MAXNAMELEN, UMEM_NOFAIL);
- (void) strlcpy(cmd, getexecname(), MAXNAMELEN);
-
- zs->zs_do_init = B_TRUE;
- if (strlen(ztest_opts.zo_alt_ztest) != 0) {
- if (ztest_opts.zo_verbose >= 1) {
- (void) printf("Executing older ztest for "
- "initialization: %s\n", ztest_opts.zo_alt_ztest);
- }
- VERIFY(!exec_child(ztest_opts.zo_alt_ztest,
- ztest_opts.zo_alt_libpath, B_FALSE, NULL));
- } else {
- VERIFY(!exec_child(NULL, NULL, B_FALSE, NULL));
- }
- zs->zs_do_init = B_FALSE;
-
- zs->zs_proc_start = gethrtime();
- zs->zs_proc_stop = zs->zs_proc_start + ztest_opts.zo_time * NANOSEC;
-
- for (int f = 0; f < ZTEST_FUNCS; f++) {
- zi = &ztest_info[f];
- zc = ZTEST_GET_SHARED_CALLSTATE(f);
- if (zs->zs_proc_start + zi->zi_interval[0] > zs->zs_proc_stop)
- zc->zc_next = UINT64_MAX;
- else
- zc->zc_next = zs->zs_proc_start +
- ztest_random(2 * zi->zi_interval[0] + 1);
- }
-
- /*
- * 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_proc_stop) {
- int status;
- boolean_t killed;
-
- /*
- * Initialize the workload counters for each function.
- */
- for (int f = 0; f < ZTEST_FUNCS; f++) {
- zc = ZTEST_GET_SHARED_CALLSTATE(f);
- zc->zc_count = 0;
- zc->zc_time = 0;
- }
-
- /* Set the allocation switch size */
- zs->zs_metaslab_df_alloc_threshold =
- ztest_random(zs->zs_metaslab_sz / 4) + 1;
-
- if (!hasalt || ztest_random(2) == 0) {
- if (hasalt && ztest_opts.zo_verbose >= 1) {
- (void) printf("Executing newer ztest: %s\n",
- cmd);
- }
- newer++;
- killed = exec_child(cmd, NULL, B_TRUE, &status);
- } else {
- if (hasalt && ztest_opts.zo_verbose >= 1) {
- (void) printf("Executing older ztest: %s\n",
- ztest_opts.zo_alt_ztest);
- }
- older++;
- killed = exec_child(ztest_opts.zo_alt_ztest,
- ztest_opts.zo_alt_libpath, B_TRUE, &status);
- }
-
- if (killed)
- kills++;
- iters++;
-
- if (ztest_opts.zo_verbose >= 1) {
- hrtime_t now = gethrtime();
-
- now = MIN(now, zs->zs_proc_stop);
- print_time(zs->zs_proc_stop - now, timebuf);
- nicenum(zs->zs_space, numbuf, sizeof (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_proc_start) /
- (ztest_opts.zo_time * NANOSEC), timebuf);
- }
-
- if (ztest_opts.zo_verbose >= 2) {
- (void) printf("\nWorkload summary:\n\n");
- (void) printf("%7s %9s %s\n",
- "Calls", "Time", "Function");
- (void) printf("%7s %9s %s\n",
- "-----", "----", "--------");
- for (int f = 0; f < ZTEST_FUNCS; f++) {
- Dl_info dli;
-
- zi = &ztest_info[f];
- zc = ZTEST_GET_SHARED_CALLSTATE(f);
- print_time(zc->zc_time, timebuf);
- (void) dladdr((void *)zi->zi_func, &dli);
- (void) printf("%7llu %9s %s\n",
- (u_longlong_t)zc->zc_count, timebuf,
- dli.dli_sname);
- }
- (void) printf("\n");
- }
-
- if (!ztest_opts.zo_mmp_test)
- ztest_run_zdb(ztest_opts.zo_pool);
- }
-
- if (ztest_opts.zo_verbose >= 1) {
- if (hasalt) {
- (void) printf("%d runs of older ztest: %s\n", older,
- ztest_opts.zo_alt_ztest);
- (void) printf("%d runs of newer ztest: %s\n", newer,
- cmd);
- }
- (void) printf("%d killed, %d completed, %.0f%% kill rate\n",
- kills, iters - kills, (100.0 * kills) / MAX(1, iters));
- }
-
- umem_free(cmd, MAXNAMELEN);
-
- return (0);
-}