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9fa06c5574
mirror_zfs/cmd/ztest.c
Paul Dagnelie 0ce1b2ca19 Invoke zdb by guid to avoid import errors 
The problem that was occurring is basically that a device was removed 
by ztest and replaced with another device. It was then reguided. The 
import then failed because there were two possible imports with the 
same name; one with the new guid, and one with the old. This can 
happen because the label writes from the device removal/replacement 
can be subject to ztest's error injection. 

The other ways to fix this would be to change the error injection to 
not trigger on removals (which may not be technically feasible), or 
to change the import code to not report configurations that are so 
short on devices (which would potentially have unpleasant end-user 
effects when trying to recover from data losses/device configuration 
issues).

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Matthew Ahrens <mahrens@delphix.com>
Reviewed-by: George Melikov <mail@gmelikov.ru>
Signed-off-by: Paul Dagnelie <pcd@delphix.com>
Closes #15298
2023-09-28 14:28:21 -07:00

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/*
* 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 https://opensource.org/licenses/CDDL-1.0.
* 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) 2013 Steven Hartland. All rights reserved.
* Copyright (c) 2014 Integros [integros.com]
* Copyright 2017 Joyent, Inc.
* Copyright (c) 2017, Intel Corporation.
*/
/*
* 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.
*
* (7) Threads are created with a reduced stack size, for sanity checking.
* Therefore, it's important not to allocate huge buffers on the stack.
*
* 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 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_draid.h>
#include <sys/vdev_impl.h>
#include <sys/vdev_file.h>
#include <sys/vdev_initialize.h>
#include <sys/vdev_raidz.h>
#include <sys/vdev_trim.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/zfs_refcount.h>
#include <sys/zfeature.h>
#include <sys/dsl_userhold.h>
#include <sys/abd.h>
#include <sys/blake3.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <getopt.h>
#include <signal.h>
#include <umem.h>
#include <ctype.h>
#include <math.h>
#include <sys/fs/zfs.h>
#include <zfs_fletcher.h>
#include <libnvpair.h>
#include <libzutil.h>
#include <sys/crypto/icp.h>
#include <sys/zfs_impl.h>
#if (__GLIBC__ && !__UCLIBC__)
#include <execinfo.h> /* for backtrace() */
#endif
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
};
#define ZO_GVARS_MAX_ARGLEN ((size_t)64)
#define ZO_GVARS_MAX_COUNT ((size_t)10)
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_raid_children;
int zo_raid_parity;
char zo_raid_type[8];
int zo_draid_data;
int zo_draid_spares;
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;
int zo_dump_dbgmsg;
int zo_gvars_count;
char zo_gvars[ZO_GVARS_MAX_COUNT][ZO_GVARS_MAX_ARGLEN];
} ztest_shared_opts_t;
/* Default values for command line options. */
#define DEFAULT_POOL "ztest"
#define DEFAULT_VDEV_DIR "/tmp"
#define DEFAULT_VDEV_COUNT 5
#define DEFAULT_VDEV_SIZE (SPA_MINDEVSIZE * 4) /* 256m default size */
#define DEFAULT_VDEV_SIZE_STR "256M"
#define DEFAULT_ASHIFT SPA_MINBLOCKSHIFT
#define DEFAULT_MIRRORS 2
#define DEFAULT_RAID_CHILDREN 4
#define DEFAULT_RAID_PARITY 1
#define DEFAULT_DRAID_DATA 4
#define DEFAULT_DRAID_SPARES 1
#define DEFAULT_DATASETS_COUNT 7
#define DEFAULT_THREADS 23
#define DEFAULT_RUN_TIME 300 /* 300 seconds */
#define DEFAULT_RUN_TIME_STR "300 sec"
#define DEFAULT_PASS_TIME 60 /* 60 seconds */
#define DEFAULT_PASS_TIME_STR "60 sec"
#define DEFAULT_KILL_RATE 70 /* 70% kill rate */
#define DEFAULT_KILLRATE_STR "70%"
#define DEFAULT_INITS 1
#define DEFAULT_MAX_LOOPS 50 /* 5 minutes */
#define DEFAULT_FORCE_GANGING (64 << 10)
#define DEFAULT_FORCE_GANGING_STR "64K"
/* Simplifying assumption: -1 is not a valid default. */
#define NO_DEFAULT -1
static const ztest_shared_opts_t ztest_opts_defaults = {
.zo_pool = DEFAULT_POOL,
.zo_dir = DEFAULT_VDEV_DIR,
.zo_alt_ztest = { '\0' },
.zo_alt_libpath = { '\0' },
.zo_vdevs = DEFAULT_VDEV_COUNT,
.zo_ashift = DEFAULT_ASHIFT,
.zo_mirrors = DEFAULT_MIRRORS,
.zo_raid_children = DEFAULT_RAID_CHILDREN,
.zo_raid_parity = DEFAULT_RAID_PARITY,
.zo_raid_type = VDEV_TYPE_RAIDZ,
.zo_vdev_size = DEFAULT_VDEV_SIZE,
.zo_draid_data = DEFAULT_DRAID_DATA, /* data drives */
.zo_draid_spares = DEFAULT_DRAID_SPARES, /* distributed spares */
.zo_datasets = DEFAULT_DATASETS_COUNT,
.zo_threads = DEFAULT_THREADS,
.zo_passtime = DEFAULT_PASS_TIME,
.zo_killrate = DEFAULT_KILL_RATE,
.zo_verbose = 0,
.zo_mmp_test = 0,
.zo_init = DEFAULT_INITS,
.zo_time = DEFAULT_RUN_TIME,
.zo_maxloops = DEFAULT_MAX_LOOPS, /* max loops during spa_freeze() */
.zo_metaslab_force_ganging = DEFAULT_FORCE_GANGING,
.zo_special_vdevs = ZTEST_VDEV_CLASS_RND,
.zo_gvars_count = 0,
};
extern uint64_t metaslab_force_ganging;
extern uint64_t metaslab_df_alloc_threshold;
extern uint64_t zfs_deadman_synctime_ms;
extern uint_t metaslab_preload_limit;
extern int zfs_compressed_arc_enabled;
extern int zfs_abd_scatter_enabled;
extern uint_t dmu_object_alloc_chunk_shift;
extern boolean_t zfs_force_some_double_word_sm_entries;
extern unsigned long zio_decompress_fail_fraction;
extern unsigned long zfs_reconstruct_indirect_damage_fraction;
static ztest_shared_opts_t *ztest_shared_opts;
static ztest_shared_opts_t ztest_opts;
static const char *const ztest_wkeydata = "abcdefghijklmnopqrstuvwxyz012345";
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(zs) \
(MAX((zs)->zs_mirrors, 1) * (ztest_opts.zo_raid_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;
pthread_rwlock_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 */
const char *zi_funcname; /* name of test function */
} 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])
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_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_spa_checkpoint_create_discard;
ztest_func_t ztest_initialize;
ztest_func_t ztest_trim;
ztest_func_t ztest_blake3;
ztest_func_t ztest_fletcher;
ztest_func_t ztest_fletcher_incr;
ztest_func_t ztest_verify_dnode_bt;
static uint64_t zopt_always = 0ULL * NANOSEC; /* all the time */
static uint64_t zopt_incessant = 1ULL * NANOSEC / 10; /* every 1/10 second */
static uint64_t zopt_often = 1ULL * NANOSEC; /* every second */
static uint64_t zopt_sometimes = 10ULL * NANOSEC; /* every 10 seconds */
static uint64_t zopt_rarely = 60ULL * NANOSEC; /* every 60 seconds */
#define ZTI_INIT(func, iters, interval) \
{ .zi_func = (func), \
.zi_iters = (iters), \
.zi_interval = (interval), \
.zi_funcname = # func }
static ztest_info_t ztest_info[] = {
ZTI_INIT(ztest_dmu_read_write, 1, &zopt_always),
ZTI_INIT(ztest_dmu_write_parallel, 10, &zopt_always),
ZTI_INIT(ztest_dmu_object_alloc_free, 1, &zopt_always),
ZTI_INIT(ztest_dmu_object_next_chunk, 1, &zopt_sometimes),
ZTI_INIT(ztest_dmu_commit_callbacks, 1, &zopt_always),
ZTI_INIT(ztest_zap, 30, &zopt_always),
ZTI_INIT(ztest_zap_parallel, 100, &zopt_always),
ZTI_INIT(ztest_split_pool, 1, &zopt_sometimes),
ZTI_INIT(ztest_zil_commit, 1, &zopt_incessant),
ZTI_INIT(ztest_zil_remount, 1, &zopt_sometimes),
ZTI_INIT(ztest_dmu_read_write_zcopy, 1, &zopt_often),
ZTI_INIT(ztest_dmu_objset_create_destroy, 1, &zopt_often),
ZTI_INIT(ztest_dsl_prop_get_set, 1, &zopt_often),
ZTI_INIT(ztest_spa_prop_get_set, 1, &zopt_sometimes),
#if 0
ZTI_INIT(ztest_dmu_prealloc, 1, &zopt_sometimes),
#endif
ZTI_INIT(ztest_fzap, 1, &zopt_sometimes),
ZTI_INIT(ztest_dmu_snapshot_create_destroy, 1, &zopt_sometimes),
ZTI_INIT(ztest_spa_create_destroy, 1, &zopt_sometimes),
ZTI_INIT(ztest_fault_inject, 1, &zopt_sometimes),
ZTI_INIT(ztest_dmu_snapshot_hold, 1, &zopt_sometimes),
ZTI_INIT(ztest_mmp_enable_disable, 1, &zopt_sometimes),
ZTI_INIT(ztest_reguid, 1, &zopt_rarely),
ZTI_INIT(ztest_scrub, 1, &zopt_rarely),
ZTI_INIT(ztest_spa_upgrade, 1, &zopt_rarely),
ZTI_INIT(ztest_dsl_dataset_promote_busy, 1, &zopt_rarely),
ZTI_INIT(ztest_vdev_attach_detach, 1, &zopt_sometimes),
ZTI_INIT(ztest_vdev_LUN_growth, 1, &zopt_rarely),
ZTI_INIT(ztest_vdev_add_remove, 1, &ztest_opts.zo_vdevtime),
ZTI_INIT(ztest_vdev_class_add, 1, &ztest_opts.zo_vdevtime),
ZTI_INIT(ztest_vdev_aux_add_remove, 1, &ztest_opts.zo_vdevtime),
ZTI_INIT(ztest_device_removal, 1, &zopt_sometimes),
ZTI_INIT(ztest_spa_checkpoint_create_discard, 1, &zopt_rarely),
ZTI_INIT(ztest_initialize, 1, &zopt_sometimes),
ZTI_INIT(ztest_trim, 1, &zopt_sometimes),
ZTI_INIT(ztest_blake3, 1, &zopt_rarely),
ZTI_INIT(ztest_fletcher, 1, &zopt_rarely),
ZTI_INIT(ztest_fletcher_incr, 1, &zopt_rarely),
ZTI_INIT(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";
static 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 boolean_t ztest_pool_scrubbed = 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 pthread_rwlock_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;
/* Commit cb delay */
static uint64_t zc_min_txg_delay = UINT64_MAX;
static int zc_cb_counter = 0;
/*
* Minimum number of commit callbacks that need to be registered for us to check
* whether the minimum txg delay is acceptable.
*/
#define ZTEST_COMMIT_CB_MIN_REG 100
/*
* 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_CB_THRESH (TXG_CONCURRENT_STATES + 1000)
enum ztest_object {
ZTEST_META_DNODE = 0,
ZTEST_DIROBJ,
ZTEST_OBJECTS
};
static __attribute__((noreturn)) void usage(boolean_t requested);
static int ztest_scrub_impl(spa_t *spa);
/*
* These libumem hooks provide a reasonable set of defaults for the allocator's
* debugging facilities.
*/
const char *
_umem_debug_init(void)
{
return ("default,verbose"); /* $UMEM_DEBUG setting */
}
const char *
_umem_logging_init(void)
{
return ("fail,contents"); /* $UMEM_LOGGING setting */
}
static void
dump_debug_buffer(void)
{
ssize_t ret __attribute__((unused));
if (!ztest_opts.zo_dump_dbgmsg)
return;
/*
* We use write() instead of printf() so that this function
* is safe to call from a signal handler.
*/
ret = write(STDOUT_FILENO, "\n", 1);
zfs_dbgmsg_print("ztest");
}
#define BACKTRACE_SZ 100
static void sig_handler(int signo)
{
struct sigaction action;
#if (__GLIBC__ && !__UCLIBC__) /* backtrace() is a GNU extension */
int nptrs;
void *buffer[BACKTRACE_SZ];
nptrs = backtrace(buffer, BACKTRACE_SZ);
backtrace_symbols_fd(buffer, nptrs, STDERR_FILENO);
#endif
dump_debug_buffer();
/*
* Restore default action and re-raise signal so SIGSEGV and
* SIGABRT can trigger a core dump.
*/
action.sa_handler = SIG_DFL;
sigemptyset(&action.sa_mask);
action.sa_flags = 0;
(void) sigaction(signo, &action, NULL);
raise(signo);
}
#define FATAL_MSG_SZ 1024
static const char *fatal_msg;
static __attribute__((format(printf, 2, 3))) __attribute__((noreturn)) void
fatal(int do_perror, const char *message, ...)
{
va_list args;
int save_errno = errno;
char *buf;
(void) fflush(stdout);
buf = umem_alloc(FATAL_MSG_SZ, UMEM_NOFAIL);
if (buf == NULL)
goto out;
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 */
out:
if (ztest_dump_core)
abort();
else
dump_debug_buffer();
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);
}
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));
/*
* UINT64_MAX is not exactly representable as a double.
* The closest representation is UINT64_MAX + 1, so we
* use a >= comparison instead of > for the bounds check.
*/
if (fval >= (double)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);
}
typedef struct ztest_option {
const char short_opt;
const char *long_opt;
const char *long_opt_param;
const char *comment;
unsigned int default_int;
const char *default_str;
} ztest_option_t;
/*
* The following option_table is used for generating the usage info as well as
* the long and short option information for calling getopt_long().
*/
static ztest_option_t option_table[] = {
{ 'v', "vdevs", "INTEGER", "Number of vdevs", DEFAULT_VDEV_COUNT,
NULL},
{ 's', "vdev-size", "INTEGER", "Size of each vdev",
NO_DEFAULT, DEFAULT_VDEV_SIZE_STR},
{ 'a', "alignment-shift", "INTEGER",
"Alignment shift; use 0 for random", DEFAULT_ASHIFT, NULL},
{ 'm', "mirror-copies", "INTEGER", "Number of mirror copies",
DEFAULT_MIRRORS, NULL},
{ 'r', "raid-disks", "INTEGER", "Number of raidz/draid disks",
DEFAULT_RAID_CHILDREN, NULL},
{ 'R', "raid-parity", "INTEGER", "Raid parity",
DEFAULT_RAID_PARITY, NULL},
{ 'K', "raid-kind", "raidz|draid|random", "Raid kind",
NO_DEFAULT, "random"},
{ 'D', "draid-data", "INTEGER", "Number of draid data drives",
DEFAULT_DRAID_DATA, NULL},
{ 'S', "draid-spares", "INTEGER", "Number of draid spares",
DEFAULT_DRAID_SPARES, NULL},
{ 'd', "datasets", "INTEGER", "Number of datasets",
DEFAULT_DATASETS_COUNT, NULL},
{ 't', "threads", "INTEGER", "Number of ztest threads",
DEFAULT_THREADS, NULL},
{ 'g', "gang-block-threshold", "INTEGER",
"Metaslab gang block threshold",
NO_DEFAULT, DEFAULT_FORCE_GANGING_STR},
{ 'i', "init-count", "INTEGER", "Number of times to initialize pool",
DEFAULT_INITS, NULL},
{ 'k', "kill-percentage", "INTEGER", "Kill percentage",
NO_DEFAULT, DEFAULT_KILLRATE_STR},
{ 'p', "pool-name", "STRING", "Pool name",
NO_DEFAULT, DEFAULT_POOL},
{ 'f', "vdev-file-directory", "PATH", "File directory for vdev files",
NO_DEFAULT, DEFAULT_VDEV_DIR},
{ 'M', "multi-host", NULL,
"Multi-host; simulate pool imported on remote host",
NO_DEFAULT, NULL},
{ 'E', "use-existing-pool", NULL,
"Use existing pool instead of creating new one", NO_DEFAULT, NULL},
{ 'T', "run-time", "INTEGER", "Total run time",
NO_DEFAULT, DEFAULT_RUN_TIME_STR},
{ 'P', "pass-time", "INTEGER", "Time per pass",
NO_DEFAULT, DEFAULT_PASS_TIME_STR},
{ 'F', "freeze-loops", "INTEGER", "Max loops in spa_freeze()",
DEFAULT_MAX_LOOPS, NULL},
{ 'B', "alt-ztest", "PATH", "Alternate ztest path",
NO_DEFAULT, NULL},
{ 'C', "vdev-class-state", "on|off|random", "vdev class state",
NO_DEFAULT, "random"},
{ 'o', "option", "\"OPTION=INTEGER\"",
"Set global variable to an unsigned 32-bit integer value",
NO_DEFAULT, NULL},
{ 'G', "dump-debug-msg", NULL,
"Dump zfs_dbgmsg buffer before exiting due to an error",
NO_DEFAULT, NULL},
{ 'V', "verbose", NULL,
"Verbose (use multiple times for ever more verbosity)",
NO_DEFAULT, NULL},
{ 'h', "help", NULL, "Show this help",
NO_DEFAULT, NULL},
{0, 0, 0, 0, 0, 0}
};
static struct option *long_opts = NULL;
static char *short_opts = NULL;
static void
init_options(void)
{
ASSERT3P(long_opts, ==, NULL);
ASSERT3P(short_opts, ==, NULL);
int count = sizeof (option_table) / sizeof (option_table[0]);
long_opts = umem_alloc(sizeof (struct option) * count, UMEM_NOFAIL);
short_opts = umem_alloc(sizeof (char) * 2 * count, UMEM_NOFAIL);
int short_opt_index = 0;
for (int i = 0; i < count; i++) {
long_opts[i].val = option_table[i].short_opt;
long_opts[i].name = option_table[i].long_opt;
long_opts[i].has_arg = option_table[i].long_opt_param != NULL
? required_argument : no_argument;
long_opts[i].flag = NULL;
short_opts[short_opt_index++] = option_table[i].short_opt;
if (option_table[i].long_opt_param != NULL) {
short_opts[short_opt_index++] = ':';
}
}
}
static void
fini_options(void)
{
int count = sizeof (option_table) / sizeof (option_table[0]);
umem_free(long_opts, sizeof (struct option) * count);
umem_free(short_opts, sizeof (char) * 2 * count);
long_opts = NULL;
short_opts = NULL;
}
static __attribute__((noreturn)) void
usage(boolean_t requested)
{
char option[80];
FILE *fp = requested ? stdout : stderr;
(void) fprintf(fp, "Usage: %s [OPTIONS...]\n", DEFAULT_POOL);
for (int i = 0; option_table[i].short_opt != 0; i++) {
if (option_table[i].long_opt_param != NULL) {
(void) sprintf(option, " -%c --%s=%s",
option_table[i].short_opt,
option_table[i].long_opt,
option_table[i].long_opt_param);
} else {
(void) sprintf(option, " -%c --%s",
option_table[i].short_opt,
option_table[i].long_opt);
}
(void) fprintf(fp, " %-40s%s", option,
option_table[i].comment);
if (option_table[i].long_opt_param != NULL) {
if (option_table[i].default_str != NULL) {
(void) fprintf(fp, " (default: %s)",
option_table[i].default_str);
} else if (option_table[i].default_int != NO_DEFAULT) {
(void) fprintf(fp, " (default: %u)",
option_table[i].default_int);
}
}
(void) fprintf(fp, "\n");
}
exit(requested ? 0 : 1);
}
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(B_TRUE, "short read from /dev/urandom");
return (r % range);
}
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;
const char *raid_kind = "random";
memcpy(zo, &ztest_opts_defaults, sizeof (*zo));
init_options();
while ((opt = getopt_long(argc, argv, short_opts, long_opts,
NULL)) != EOF) {
value = 0;
switch (opt) {
case 'v':
case 's':
case 'a':
case 'm':
case 'r':
case 'R':
case 'D':
case 'S':
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_raid_children = MAX(1, value);
break;
case 'R':
zo->zo_raid_parity = MIN(MAX(value, 1), 3);
break;
case 'K':
raid_kind = optarg;
break;
case 'D':
zo->zo_draid_data = MAX(1, value);
break;
case 'S':
zo->zo_draid_spares = MAX(1, value);
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));
free(path);
}
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(zo->zo_alt_ztest, optarg,
sizeof (zo->zo_alt_ztest));
break;
case 'C':
ztest_parse_name_value(optarg, zo);
break;
case 'o':
if (zo->zo_gvars_count >= ZO_GVARS_MAX_COUNT) {
(void) fprintf(stderr,
"max global var count (%zu) exceeded\n",
ZO_GVARS_MAX_COUNT);
usage(B_FALSE);
}
char *v = zo->zo_gvars[zo->zo_gvars_count];
if (strlcpy(v, optarg, ZO_GVARS_MAX_ARGLEN) >=
ZO_GVARS_MAX_ARGLEN) {
(void) fprintf(stderr,
"global var option '%s' is too long\n",
optarg);
usage(B_FALSE);
}
zo->zo_gvars_count++;
break;
case 'G':
zo->zo_dump_dbgmsg = 1;
break;
case 'h':
usage(B_TRUE);
break;
case '?':
default:
usage(B_FALSE);
break;
}
}
fini_options();
/* When raid choice is 'random' add a draid pool 50% of the time */
if (strcmp(raid_kind, "random") == 0) {
raid_kind = (ztest_random(2) == 0) ? "draid" : "raidz";
if (ztest_opts.zo_verbose >= 3)
(void) printf("choosing RAID type '%s'\n", raid_kind);
}
if (strcmp(raid_kind, "draid") == 0) {
uint64_t min_devsize;
/* With fewer disk use 256M, otherwise 128M is OK */
min_devsize = (ztest_opts.zo_raid_children < 16) ?
(256ULL << 20) : (128ULL << 20);
/* No top-level mirrors with dRAID for now */
zo->zo_mirrors = 0;
/* Use more appropriate defaults for dRAID */
if (zo->zo_vdevs == ztest_opts_defaults.zo_vdevs)
zo->zo_vdevs = 1;
if (zo->zo_raid_children ==
ztest_opts_defaults.zo_raid_children)
zo->zo_raid_children = 16;
if (zo->zo_ashift < 12)
zo->zo_ashift = 12;
if (zo->zo_vdev_size < min_devsize)
zo->zo_vdev_size = min_devsize;
if (zo->zo_draid_data + zo->zo_raid_parity >
zo->zo_raid_children - zo->zo_draid_spares) {
(void) fprintf(stderr, "error: too few draid "
"children (%d) for stripe width (%d)\n",
zo->zo_raid_children,
zo->zo_draid_data + zo->zo_raid_parity);
usage(B_FALSE);
}
(void) strlcpy(zo->zo_raid_type, VDEV_TYPE_DRAID,
sizeof (zo->zo_raid_type));
} else /* using raidz */ {
ASSERT0(strcmp(raid_kind, "raidz"));
zo->zo_raid_parity = MIN(zo->zo_raid_parity,
zo->zo_raid_children - 1);
}
zo->zo_vdevtime =
(zo->zo_vdevs > 0 ? zo->zo_time * NANOSEC / zo->zo_vdevs :
UINT64_MAX >> 2);
if (*zo->zo_alt_ztest) {
const char *invalid_what = "ztest";
char *val = zo->zo_alt_ztest;
if (0 != access(val, X_OK) ||
(strrchr(val, '/') == NULL && (errno == EINVAL)))
goto invalid;
int dirlen = strrchr(val, '/') - val;
strlcpy(zo->zo_alt_libpath, val,
MIN(sizeof (zo->zo_alt_libpath), dirlen + 1));
invalid_what = "library path", val = zo->zo_alt_libpath;
if (strrchr(val, '/') == NULL && (errno == EINVAL))
goto invalid;
*strrchr(val, '/') = '\0';
strlcat(val, "/lib", sizeof (zo->zo_alt_libpath));
if (0 != access(zo->zo_alt_libpath, X_OK))
goto invalid;
return;
invalid:
ztest_dump_core = B_FALSE;
fatal(B_TRUE, "invalid alternate %s %s", invalid_what, val);
}
}
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 ourselves, 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, B_FALSE);
mutex_exit(&spa_namespace_lock);
(void) raise(SIGKILL);
}
static void
ztest_record_enospc(const char *s)
{
(void) 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 boolean_t
ztest_is_draid_spare(const char *name)
{
uint64_t spare_id = 0, parity = 0, vdev_id = 0;
if (sscanf(name, VDEV_TYPE_DRAID "%"PRIu64"-%"PRIu64"-%"PRIu64"",
&parity, &vdev_id, &spare_id) == 3) {
return (B_TRUE);
}
return (B_FALSE);
}
static nvlist_t *
make_vdev_file(const char *path, const char *aux, const char *pool,
size_t size, uint64_t ashift)
{
char *pathbuf = NULL;
uint64_t vdev;
nvlist_t *file;
boolean_t draid_spare = B_FALSE;
if (ashift == 0)
ashift = ztest_get_ashift();
if (path == NULL) {
pathbuf = umem_alloc(MAXPATHLEN, UMEM_NOFAIL);
path = pathbuf;
if (aux != NULL) {
vdev = ztest_shared->zs_vdev_aux;
(void) snprintf(pathbuf, MAXPATHLEN,
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(pathbuf, MAXPATHLEN,
ztest_dev_template, ztest_opts.zo_dir,
pool == NULL ? ztest_opts.zo_pool : pool, vdev);
}
} else {
draid_spare = ztest_is_draid_spare(path);
}
if (size != 0 && !draid_spare) {
int fd = open(path, O_RDWR | O_CREAT | O_TRUNC, 0666);
if (fd == -1)
fatal(B_TRUE, "can't open %s", path);
if (ftruncate(fd, size) != 0)
fatal(B_TRUE, "can't ftruncate %s", path);
(void) close(fd);
}
file = fnvlist_alloc();
fnvlist_add_string(file, ZPOOL_CONFIG_TYPE,
draid_spare ? VDEV_TYPE_DRAID_SPARE : VDEV_TYPE_FILE);
fnvlist_add_string(file, ZPOOL_CONFIG_PATH, path);
fnvlist_add_uint64(file, ZPOOL_CONFIG_ASHIFT, ashift);
umem_free(pathbuf, MAXPATHLEN);
return (file);
}
static nvlist_t *
make_vdev_raid(const char *path, const char *aux, const char *pool, size_t size,
uint64_t ashift, int r)
{
nvlist_t *raid, **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);
raid = fnvlist_alloc();
fnvlist_add_string(raid, ZPOOL_CONFIG_TYPE,
ztest_opts.zo_raid_type);
fnvlist_add_uint64(raid, ZPOOL_CONFIG_NPARITY,
ztest_opts.zo_raid_parity);
fnvlist_add_nvlist_array(raid, ZPOOL_CONFIG_CHILDREN,
(const nvlist_t **)child, r);
if (strcmp(ztest_opts.zo_raid_type, VDEV_TYPE_DRAID) == 0) {
uint64_t ndata = ztest_opts.zo_draid_data;
uint64_t nparity = ztest_opts.zo_raid_parity;
uint64_t nspares = ztest_opts.zo_draid_spares;
uint64_t children = ztest_opts.zo_raid_children;
uint64_t ngroups = 1;
/*
* Calculate the minimum number of groups required to fill a
* slice. This is the LCM of the stripe width (data + parity)
* and the number of data drives (children - spares).
*/
while (ngroups * (ndata + nparity) % (children - nspares) != 0)
ngroups++;
/* Store the basic dRAID configuration. */
fnvlist_add_uint64(raid, ZPOOL_CONFIG_DRAID_NDATA, ndata);
fnvlist_add_uint64(raid, ZPOOL_CONFIG_DRAID_NSPARES, nspares);
fnvlist_add_uint64(raid, ZPOOL_CONFIG_DRAID_NGROUPS, ngroups);
}
for (c = 0; c < r; c++)
fnvlist_free(child[c]);
umem_free(child, r * sizeof (nvlist_t *));
return (raid);
}
static nvlist_t *
make_vdev_mirror(const char *path, const char *aux, const char *pool,
size_t size, uint64_t ashift, int r, int m)
{
nvlist_t *mirror, **child;
int c;
if (m < 1)
return (make_vdev_raid(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_raid(path, aux, pool, size, ashift, r);
mirror = fnvlist_alloc();
fnvlist_add_string(mirror, ZPOOL_CONFIG_TYPE, VDEV_TYPE_MIRROR);
fnvlist_add_nvlist_array(mirror, ZPOOL_CONFIG_CHILDREN,
(const nvlist_t **)child, m);
for (c = 0; c < m; c++)
fnvlist_free(child[c]);
umem_free(child, m * sizeof (nvlist_t *));
return (mirror);
}
static nvlist_t *
make_vdev_root(const char *path, const char *aux, const 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;
ASSERT3S(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);
fnvlist_add_uint64(child[c], ZPOOL_CONFIG_IS_LOG, log);
if (class != NULL && class[0] != '\0') {
ASSERT(m > 1 || log); /* expecting a mirror */
fnvlist_add_string(child[c],
ZPOOL_CONFIG_ALLOCATION_BIAS, class);
}
}
root = fnvlist_alloc();
fnvlist_add_string(root, ZPOOL_CONFIG_TYPE, VDEV_TYPE_ROOT);
fnvlist_add_nvlist_array(root, aux ? aux : ZPOOL_CONFIG_CHILDREN,
(const nvlist_t **)child, t);
for (c = 0; c < t; c++)
fnvlist_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)
{
ASSERT3U(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;
uint64_t 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;
ASSERT3U(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;
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);
setpoint = umem_alloc(MAXPATHLEN, UMEM_NOFAIL);
VERIFY0(dsl_prop_get_integer(osname, propname, &curval, setpoint));
if (ztest_opts.zo_verbose >= 6) {
int err;
err = zfs_prop_index_to_string(prop, curval, &valname);
if (err)
(void) printf("%s %s = %llu at '%s'\n", osname,
propname, (unsigned long long)curval, setpoint);
else
(void) printf("%s %s = %s at '%s'\n",
osname, propname, valname, setpoint);
}
umem_free(setpoint, MAXPATHLEN);
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;
props = fnvlist_alloc();
fnvlist_add_uint64(props, zpool_prop_to_name(prop), value);
error = spa_prop_set(spa, props);
fnvlist_free(props);
if (error == ENOSPC) {
ztest_record_enospc(FTAG);
return (error);
}
ASSERT0(error);
return (error);
}
static int
ztest_dmu_objset_own(const char *name, dmu_objset_type_t type,
boolean_t readonly, boolean_t decrypt, const void *tag, objset_t **osp)
{
int err;
char *cp = NULL;
char ddname[ZFS_MAX_DATASET_NAME_LEN];
strlcpy(ddname, name, sizeof (ddname));
cp = strchr(ddname, '@');
if (cp != NULL)
*cp = '\0';
err = dmu_objset_own(name, type, readonly, decrypt, tag, osp);
while (decrypt && err == EACCES) {
dsl_crypto_params_t *dcp;
nvlist_t *crypto_args = fnvlist_alloc();
fnvlist_add_uint8_array(crypto_args, "wkeydata",
(uint8_t *)ztest_wkeydata, WRAPPING_KEY_LEN);
VERIFY0(dsl_crypto_params_create_nvlist(DCP_CMD_NONE, NULL,
crypto_args, &dcp));
err = spa_keystore_load_wkey(ddname, dcp, B_FALSE);
/*
* Note: if there was an error loading, the wkey was not
* consumed, and needs to be freed.
*/
dsl_crypto_params_free(dcp, (err != 0));
fnvlist_free(crypto_args);
if (err == EINVAL) {
/*
* We couldn't load a key for this dataset so try
* the parent. This loop will eventually hit the
* encryption root since ztest only makes clones
* as children of their origin datasets.
*/
cp = strrchr(ddname, '/');
if (cp == NULL)
return (err);
*cp = '\0';
err = EACCES;
continue;
} else if (err != 0) {
break;
}
err = dmu_objset_own(name, type, readonly, decrypt, tag, osp);
break;
}
return (err);
}
static void
ztest_rll_init(rll_t *rll)
{
rll->rll_writer = NULL;
rll->rll_readers = 0;
mutex_init(&rll->rll_lock, NULL, MUTEX_DEFAULT, NULL);
cv_init(&rll->rll_cv, NULL, CV_DEFAULT, NULL);
}
static void
ztest_rll_destroy(rll_t *rll)
{
ASSERT3P(rll->rll_writer, ==, NULL);
ASSERT0(rll->rll_readers);
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)
(void) cv_wait(&rll->rll_cv, &rll->rll_lock);
rll->rll_readers++;
} else {
while (rll->rll_writer != NULL || rll->rll_readers)
(void) 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) {
ASSERT0(rll->rll_readers);
rll->rll_writer = NULL;
} else {
ASSERT3S(rll->rll_readers, >, 0);
ASSERT3P(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);
int l;
if (zd->zd_shared != NULL)
zd->zd_shared->zd_seq = 0;
VERIFY0(pthread_rwlock_init(&zd->zd_zilog_lock, NULL));
mutex_init(&zd->zd_dirobj_lock, NULL, MUTEX_DEFAULT, NULL);
for (l = 0; l < ZTEST_OBJECT_LOCKS; l++)
ztest_rll_init(&zd->zd_object_lock[l]);
for (l = 0; l < ZTEST_RANGE_LOCKS; l++)
ztest_rll_init(&zd->zd_range_lock[l]);
}
static void
ztest_zd_fini(ztest_ds_t *zd)
{
int l;
mutex_destroy(&zd->zd_dirobj_lock);
(void) pthread_rwlock_destroy(&zd->zd_zilog_lock);
for (l = 0; l < ZTEST_OBJECT_LOCKS; l++)
ztest_rll_destroy(&zd->zd_object_lock[l]);
for (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) {
ASSERT3U(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);
ASSERT3U(txg, !=, 0);
return (txg);
}
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.
*/
static 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.
*/
static 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);
memcpy(&itx->itx_lr + 1, &lr->lr_common + 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);
memcpy(&itx->itx_lr + 1, &lr->lr_common + 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, sizeof (lr_write_t)))
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);
memcpy(&itx->itx_lr + 1, &lr->lr_common + 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));
memcpy(&itx->itx_lr + 1, &lr->lr_common + 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));
memcpy(&itx->itx_lr + 1, &lr->lr_common + 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));
ASSERT3U(lr->lr_doid, ==, ZTEST_DIROBJ);
ASSERT3S(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);
ASSERT3U(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);
}
ASSERT3U(lr->lr_foid, !=, 0);
if (lr->lrz_type != DMU_OT_ZAP_OTHER)
VERIFY0(dmu_object_set_blocksize(os, lr->lr_foid,
lr->lrz_blocksize, lr->lrz_ibshift, tx));
VERIFY0(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);
VERIFY0(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));
ASSERT3U(lr->lr_doid, ==, ZTEST_DIROBJ);
ASSERT3S(name[0], !=, '\0');
VERIFY0(
zap_lookup(os, lr->lr_doid, name, sizeof (object), 1, &object));
ASSERT3U(object, !=, 0);
ztest_object_lock(zd, object, RL_WRITER);
VERIFY0(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) {
VERIFY0(zap_destroy(os, object, tx));
} else {
VERIFY0(dmu_object_free(os, object, tx));
}
VERIFY0(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);
VERIFY0(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(doi.doi_data_block_size);
ASSERT0(offset % doi.doi_data_block_size);
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 {
memcpy(abuf->b_data, data, length);
VERIFY0(dmu_assign_arcbuf_by_dbuf(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);
}
VERIFY0(dmu_free_range(os, lr->lr_foid, lr->lr_offset,
lr->lr_length, tx));
(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);
VERIFY0(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) {
ASSERT3U(lr->lr_size, !=, 0);
ASSERT3U(lr->lr_mode, !=, 0);
ASSERT3U(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;
ASSERT0(lrtxg);
}
/*
* 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);
}
static 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 */
NULL, /* TX_SETSAXATTR */
NULL, /* TX_RENAME_EXCHANGE */
NULL, /* TX_RENAME_WHITEOUT */
};
/*
* ZIL get_data callbacks
*/
static void
ztest_get_done(zgd_t *zgd, int error)
{
(void) 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, uint64_t arg2, lr_write_t *lr, char *buf,
struct lwb *lwb, zio_t *zio)
{
(void) arg2;
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);
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 zfs_locked_range *)ztest_range_lock(zd,
object, offset, size, RL_READER);
error = dmu_read(os, object, offset, size, buf,
DMU_READ_NO_PREFETCH);
ASSERT0(error);
} else {
ASSERT3P(zio, !=, NULL);
size = doi.doi_data_block_size;
if (ISP2(size)) {
offset = P2ALIGN(offset, size);
} else {
ASSERT3U(offset, <, size);
offset = 0;
}
zgd->zgd_lr = (struct zfs_locked_range *)ztest_range_lock(zd,
object, offset, size, RL_READER);
error = dmu_buf_hold_noread(os, object, offset, zgd, &db);
if (error == 0) {
blkptr_t *bp = &lr->lr_blkptr;
zgd->zgd_db = db;
zgd->zgd_bp = bp;
ASSERT3U(db->db_offset, ==, offset);
ASSERT3U(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)
memcpy(lr + lrsize, name, namesize);
return (lr);
}
static 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;
int i;
ASSERT(MUTEX_HELD(&zd->zd_dirobj_lock));
for (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) {
ASSERT3S(error, ==, ENOENT);
ASSERT0(od->od_object);
missing++;
} else {
dmu_buf_t *db;
ztest_block_tag_t *bbt;
dmu_object_info_t doi;
ASSERT3U(od->od_object, !=, 0);
ASSERT0(missing); /* there should be no gaps */
ztest_object_lock(zd, od->od_object, RL_READER);
VERIFY0(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;
int i;
ASSERT(MUTEX_HELD(&zd->zd_dirobj_lock));
for (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) {
ASSERT0(missing);
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;
ASSERT3U(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;
int i;
ASSERT(MUTEX_HELD(&zd->zd_dirobj_lock));
od += count - 1;
for (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);
memcpy(lr + 1, data, 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;
VERIFY0(dmu_object_info(zd->zd_os, object, &doi));
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;
(void) pthread_rwlock_rdlock(&zd->zd_zilog_lock);
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:
memset(data, 0, 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;
default:
break;
case ZTEST_IO_REWRITE:
(void) pthread_rwlock_rdlock(&ztest_name_lock);
err = ztest_dsl_prop_set_uint64(zd->zd_name,
ZFS_PROP_CHECKSUM, spa_dedup_checksum(ztest_spa),
B_FALSE);
ASSERT(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);
ASSERT(err == 0 || err == ENOSPC);
(void) pthread_rwlock_unlock(&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;
}
(void) pthread_rwlock_unlock(&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, const 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(%"PRId64")[%"PRIu64"]",
tag, 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);
}
void
ztest_zil_commit(ztest_ds_t *zd, uint64_t id)
{
(void) id;
zilog_t *zilog = zd->zd_zilog;
(void) pthread_rwlock_rdlock(&zd->zd_zilog_lock);
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);
ASSERT3P(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);
(void) pthread_rwlock_unlock(&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.
*/
void
ztest_zil_remount(ztest_ds_t *zd, uint64_t id)
{
(void) id;
objset_t *os = zd->zd_os;
/*
* We hold the ztest_vdev_lock so we don't cause problems with
* other threads that wish to remove a log device, such as
* ztest_device_removal().
*/
mutex_enter(&ztest_vdev_lock);
/*
* 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);
(void) pthread_rwlock_wrlock(&zd->zd_zilog_lock);
/* zfsvfs_teardown() */
zil_close(zd->zd_zilog);
/* zfsvfs_setup() */
VERIFY3P(zil_open(os, ztest_get_data, NULL), ==, zd->zd_zilog);
zil_replay(os, zd, ztest_replay_vector);
(void) pthread_rwlock_unlock(&zd->zd_zilog_lock);
mutex_exit(&zd->zd_dirobj_lock);
mutex_exit(&ztest_vdev_lock);
}
/*
* Verify that we can't destroy an active pool, create an existing pool,
* or create a pool with a bad vdev spec.
*/
void
ztest_spa_create_destroy(ztest_ds_t *zd, uint64_t id)
{
(void) zd, (void) 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, NULL));
fnvlist_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, NULL));
fnvlist_free(nvroot);
/*
* Attempt to create an existing pool. It shouldn't matter
* what's in the nvroot; we should fail with EEXIST.
*/
(void) pthread_rwlock_rdlock(&ztest_name_lock);
nvroot = make_vdev_root("/dev/bogus", NULL, NULL, 0, 0, NULL, 0, 0, 1);
VERIFY3U(EEXIST, ==,
spa_create(zo->zo_pool, nvroot, NULL, NULL, NULL));
fnvlist_free(nvroot);
/*
* We open a reference to the spa and then we try to export it
* expecting one of the following errors:
*
* EBUSY
* Because of the reference we just opened.
*
* ZFS_ERR_EXPORT_IN_PROGRESS
* For the case that there is another ztest thread doing
* an export concurrently.
*/
VERIFY0(spa_open(zo->zo_pool, &spa, FTAG));
int error = spa_destroy(zo->zo_pool);
if (error != EBUSY && error != ZFS_ERR_EXPORT_IN_PROGRESS) {
fatal(B_FALSE, "spa_destroy(%s) returned unexpected value %d",
spa->spa_name, error);
}
spa_close(spa, FTAG);
(void) pthread_rwlock_unlock(&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.
*/
void
ztest_mmp_enable_disable(ztest_ds_t *zd, uint64_t id)
{
(void) zd, (void) 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);
}
void
ztest_spa_upgrade(ztest_ds_t *zd, uint64_t id)
{
(void) zd, (void) 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;
/* dRAID added after feature flags, skip upgrade test. */
if (strcmp(ztest_opts.zo_raid_type, VDEV_TYPE_DRAID) == 0)
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_raid_children, ztest_opts.zo_mirrors, 1);
/*
* If we're configuring a RAIDZ device then make sure that the
* initial version is capable of supporting that feature.
*/
switch (ztest_opts.zo_raid_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, 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 "
"%"PRIu64" to %"PRIu64"\n",
version, 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);
kmem_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(B_FALSE, "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(B_FALSE, "spa_discard_checkpoint(%s) = %d",
spa->spa_name, error);
}
}
void
ztest_spa_checkpoint_create_discard(ztest_ds_t *zd, uint64_t id)
{
(void) zd, (void) 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;
int c;
if (vd->vdev_path != NULL && strcmp(path, vd->vdev_path) == 0)
return (vd);
for (c = 0; c < vd->vdev_children; c++)
if ((mvd = vdev_lookup_by_path(vd->vdev_child[c], path)) !=
NULL)
return (mvd);
return (NULL);
}
static int
spa_num_top_vdevs(spa_t *spa)
{
vdev_t *rvd = spa->spa_root_vdev;
ASSERT3U(spa_config_held(spa, SCL_VDEV, RW_READER), ==, SCL_VDEV);
return (rvd->vdev_children);
}
/*
* Verify that vdev_add() works as expected.
*/
void
ztest_vdev_add_remove(ztest_ds_t *zd, uint64_t id)
{
(void) zd, (void) 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_raid_children;
spa_config_enter(spa, SCL_VDEV, FTAG, RW_READER);
ztest_shared->zs_vdev_next_leaf = spa_num_top_vdevs(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_allocator[0].mca_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
* dsl_destroy_head() to fail with EBUSY thus
* leaving the dataset in an inconsistent state.
*/
pthread_rwlock_wrlock(&ztest_name_lock);
error = spa_vdev_remove(spa, guid, B_FALSE);
pthread_rwlock_unlock(&ztest_name_lock);
switch (error) {
case 0:
case EEXIST: /* Generic zil_reset() error */
case EBUSY: /* Replay required */
case EACCES: /* Crypto key not loaded */
case ZFS_ERR_CHECKPOINT_EXISTS:
case ZFS_ERR_DISCARDING_CHECKPOINT:
break;
default:
fatal(B_FALSE, "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_raid_children, zs->zs_mirrors,
1);
error = spa_vdev_add(spa, nvroot);
fnvlist_free(nvroot);
switch (error) {
case 0:
break;
case ENOSPC:
ztest_record_enospc("spa_vdev_add");
break;
default:
fatal(B_FALSE, "spa_vdev_add() = %d", error);
}
}
mutex_exit(&ztest_vdev_lock);
}
void
ztest_vdev_class_add(ztest_ds_t *zd, uint64_t id)
{
(void) zd, (void) 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_raid_children;
spa_config_enter(spa, SCL_VDEV, FTAG, RW_READER);
ztest_shared->zs_vdev_next_leaf = spa_num_top_vdevs(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_raid_children, zs->zs_mirrors, 1);
error = spa_vdev_add(spa, nvroot);
fnvlist_free(nvroot);
if (error == ENOSPC)
ztest_record_enospc("spa_vdev_add");
else if (error != 0)
fatal(B_FALSE, "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");
error = ztest_dsl_prop_set_uint64(zd->zd_name,
ZFS_PROP_SPECIAL_SMALL_BLOCKS, 32768, B_FALSE);
ASSERT(error == 0 || error == ENOSPC);
}
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.
*/
void
ztest_vdev_aux_add_remove(ztest_ds_t *zd, uint64_t id)
{
(void) zd, (void) id;
ztest_shared_t *zs = ztest_shared;
spa_t *spa = ztest_spa;
vdev_t *rvd = spa->spa_root_vdev;
spa_aux_vdev_t *sav;
const char *aux;
char *path;
uint64_t guid = 0;
int error, ignore_err = 0;
if (ztest_opts.zo_mmp_test)
return;
path = umem_alloc(MAXPATHLEN, UMEM_NOFAIL);
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.
*/
vdev_t *svd = sav->sav_vdevs[ztest_random(sav->sav_count)];
/* dRAID spares cannot be removed; try anyways to see ENOTSUP */
if (strstr(svd->vdev_path, VDEV_TYPE_DRAID) != NULL)
ignore_err = ENOTSUP;
guid = svd->vdev_guid;
} else {
/*
* Find an unused device we can add.
*/
zs->zs_vdev_aux = 0;
for (;;) {
int c;
(void) snprintf(path, MAXPATHLEN, 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(B_FALSE, "spa_vdev_add(%p) = %d", nvroot, error);
}
fnvlist_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:
if (error != ignore_err)
fatal(B_FALSE,
"spa_vdev_remove(%"PRIu64") = %d",
guid, error);
}
}
mutex_exit(&ztest_vdev_lock);
umem_free(path, MAXPATHLEN);
}
/*
* split a pool if it has mirror tlvdevs
*/
void
ztest_split_pool(ztest_ds_t *zd, uint64_t id)
{
(void) zd, (void) 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 usable config; mirrors of raidz aren't supported */
if (zs->zs_mirrors < 3 || ztest_opts.zo_raid_children > 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);
tree = fnvlist_lookup_nvlist(spa->spa_config, ZPOOL_CONFIG_VDEV_TREE);
mutex_exit(&spa->spa_props_lock);
VERIFY0(nvlist_lookup_nvlist_array(tree, ZPOOL_CONFIG_CHILDREN,
&child, &children));
schild = umem_alloc(rvd->vdev_children * sizeof (nvlist_t *),
UMEM_NOFAIL);
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) {
schild[schildren] = fnvlist_alloc();
fnvlist_add_string(schild[schildren],
ZPOOL_CONFIG_TYPE, VDEV_TYPE_HOLE);
fnvlist_add_uint64(schild[schildren],
ZPOOL_CONFIG_IS_HOLE, 1);
if (lastlogid == 0)
lastlogid = schildren;
++schildren;
continue;
}
lastlogid = 0;
VERIFY0(nvlist_lookup_nvlist_array(child[c],
ZPOOL_CONFIG_CHILDREN, &mchild, &mchildren));
schild[schildren++] = fnvlist_dup(mchild[0]);
}
/* OK, create a config that can be used to split */
split = fnvlist_alloc();
fnvlist_add_string(split, ZPOOL_CONFIG_TYPE, VDEV_TYPE_ROOT);
fnvlist_add_nvlist_array(split, ZPOOL_CONFIG_CHILDREN,
(const nvlist_t **)schild, lastlogid != 0 ? lastlogid : schildren);
config = fnvlist_alloc();
fnvlist_add_nvlist(config, ZPOOL_CONFIG_VDEV_TREE, split);
for (c = 0; c < schildren; c++)
fnvlist_free(schild[c]);
umem_free(schild, rvd->vdev_children * sizeof (nvlist_t *));
fnvlist_free(split);
spa_config_exit(spa, SCL_VDEV, FTAG);
(void) pthread_rwlock_wrlock(&ztest_name_lock);
error = spa_vdev_split_mirror(spa, "splitp", config, NULL, B_FALSE);
(void) pthread_rwlock_unlock(&ztest_name_lock);
fnvlist_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.
*/
void
ztest_vdev_attach_detach(ztest_ds_t *zd, uint64_t id)
{
(void) zd, (void) 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, *newpath;
int replacing;
int oldvd_has_siblings = B_FALSE;
int newvd_is_spare = B_FALSE;
int newvd_is_dspare = B_FALSE;
int oldvd_is_log;
int oldvd_is_special;
int error, expected_error;
if (ztest_opts.zo_mmp_test)
return;
oldpath = umem_alloc(MAXPATHLEN, UMEM_NOFAIL);
newpath = umem_alloc(MAXPATHLEN, UMEM_NOFAIL);
mutex_enter(&ztest_vdev_lock);
leaves = MAX(zs->zs_mirrors, 1) * ztest_opts.zo_raid_children;
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);
goto out;
}
/*
* 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) {
ASSERT3P(oldvd->vdev_ops, ==, &vdev_mirror_ops);
ASSERT3U(oldvd->vdev_children, >=, zs->zs_mirrors);
oldvd = oldvd->vdev_child[leaf / ztest_opts.zo_raid_children];
}
/* pick a child out of the raidz group */
if (ztest_opts.zo_raid_children > 1) {
if (strcmp(oldvd->vdev_ops->vdev_op_type, "raidz") == 0)
ASSERT3P(oldvd->vdev_ops, ==, &vdev_raidz_ops);
else
ASSERT3P(oldvd->vdev_ops, ==, &vdev_draid_ops);
ASSERT3U(oldvd->vdev_children, ==, ztest_opts.zo_raid_children);
oldvd = oldvd->vdev_child[leaf % ztest_opts.zo_raid_children];
}
/*
* 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;
ASSERT3U(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;
oldvd_is_special =
oldvd->vdev_top->vdev_alloc_bias == VDEV_BIAS_SPECIAL ||
oldvd->vdev_top->vdev_alloc_bias == VDEV_BIAS_DEDUP;
(void) strlcpy(oldpath, oldvd->vdev_path, MAXPATHLEN);
pvd = oldvd->vdev_parent;
pguid = pvd->vdev_guid;
/*
* If oldvd has siblings, then half of the time, detach it. Prior
* to the detach the pool is scrubbed in order to prevent creating
* unrepairable blocks as a result of the data corruption injection.
*/
if (oldvd_has_siblings && ztest_random(2) == 0) {
spa_config_exit(spa, SCL_ALL, FTAG);
error = ztest_scrub_impl(spa);
if (error)
goto out;
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(B_FALSE, "detach (%s) returned %d",
oldpath, error);
goto out;
}
/*
* 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;
if (newvd->vdev_ops == &vdev_draid_spare_ops)
newvd_is_dspare = B_TRUE;
(void) strlcpy(newpath, newvd->vdev_path, MAXPATHLEN);
} else {
(void) snprintf(newpath, MAXPATHLEN, 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 newvd is a distributed spare and it's being attached to a
* dRAID which is not its parent it should fail with EINVAL.
*/
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 || oldvd_is_special))
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 (!newvd_is_dspare && newsize < oldsize)
expected_error = EOVERFLOW;
else if (ashift > oldvd->vdev_top->vdev_ashift)
expected_error = EDOM;
else if (newvd_is_dspare && pvd != vdev_draid_spare_get_parent(newvd))
expected_error = EINVAL;
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);
/*
* When supported select either a healing or sequential resilver.
*/
boolean_t rebuilding = B_FALSE;
if (pvd->vdev_ops == &vdev_mirror_ops ||
pvd->vdev_ops == &vdev_root_ops) {
rebuilding = !!ztest_random(2);
}
error = spa_vdev_attach(spa, oldguid, root, replacing, rebuilding);
fnvlist_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 ||
error == ZFS_ERR_RESILVER_IN_PROGRESS ||
error == ZFS_ERR_REBUILD_IN_PROGRESS)
expected_error = error;
if (error != expected_error && expected_error != EBUSY) {
fatal(B_FALSE, "attach (%s %"PRIu64", %s %"PRIu64", %d) "
"returned %d, expected %d",
oldpath, oldsize, newpath,
newsize, replacing, error, expected_error);
}
out:
mutex_exit(&ztest_vdev_lock);
umem_free(oldpath, MAXPATHLEN);
umem_free(newpath, MAXPATHLEN);
}
void
ztest_device_removal(ztest_ds_t *zd, uint64_t id)
{
(void) zd, (void) 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);
/*
* spa->spa_vdev_removal is created in a sync task that
* is initiated via dsl_sync_task_nowait(). Since the
* task may not run before spa_vdev_remove() returns, we
* must wait at least 1 txg to ensure that the removal
* struct has been created.
*/
txg_wait_synced(spa_get_dsl(spa), 0);
while (spa->spa_removing_phys.sr_state == DSS_SCANNING)
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.
*/
static vdev_t *
grow_vdev(vdev_t *vd, void *arg)
{
spa_t *spa __maybe_unused = vd->vdev_spa;
size_t *newsize = arg;
size_t fsize;
int fd;
ASSERT3S(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);
VERIFY0(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().
*/
static vdev_t *
online_vdev(vdev_t *vd, void *arg)
{
(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;
ASSERT3S(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 %u, "
"error %d\n", 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 %"PRIu64", state %"PRIu64", "
"expected gen %"PRIu64", got gen %"PRIu64"\n",
guid,
tvd->vdev_state,
generation,
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.
*/
static vdev_t *
vdev_walk_tree(vdev_t *vd, vdev_t *(*func)(vdev_t *, void *), void *arg)
{
uint_t c;
if (vd->vdev_ops->vdev_op_leaf) {
if (func == NULL)
return (vd);
else
return (func(vd, arg));
}
for (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.
*/
void
ztest_vdev_LUN_growth(ztest_ds_t *zd, uint64_t id)
{
(void) zd, (void) 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;
}
ASSERT3U(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(B_FALSE,
"LUN expansion failed: ms_count %"PRIu64" < %"PRIu64"\n",
old_ms_count, new_ms_count);
}
/*
* Make sure we were able to grow the pool.
*/
if (new_class_space <= old_class_space) {
fatal(B_FALSE,
"LUN expansion failed: class_space %"PRIu64" < %"PRIu64"\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.
*/
static void
ztest_objset_create_cb(objset_t *os, void *arg, cred_t *cr, dmu_tx_t *tx)
{
(void) arg, (void) cr;
/*
* Create the objects common to all ztest datasets.
*/
VERIFY0(zap_create_claim(os, ZTEST_DIROBJ,
DMU_OT_ZAP_OTHER, DMU_OT_NONE, 0, tx));
}
static int
ztest_dataset_create(char *dsname)
{
int err;
uint64_t rand;
dsl_crypto_params_t *dcp = NULL;
/*
* 50% of the time, we create encrypted datasets
* using a random cipher suite and a hard-coded
* wrapping key.
*/
rand = ztest_random(2);
if (rand != 0) {
nvlist_t *crypto_args = fnvlist_alloc();
nvlist_t *props = fnvlist_alloc();
/* slight bias towards the default cipher suite */
rand = ztest_random(ZIO_CRYPT_FUNCTIONS);
if (rand < ZIO_CRYPT_AES_128_CCM)
rand = ZIO_CRYPT_ON;
fnvlist_add_uint64(props,
zfs_prop_to_name(ZFS_PROP_ENCRYPTION), rand);
fnvlist_add_uint8_array(crypto_args, "wkeydata",
(uint8_t *)ztest_wkeydata, WRAPPING_KEY_LEN);
/*
* These parameters aren't really used by the kernel. They
* are simply stored so that userspace knows how to load
* the wrapping key.
*/
fnvlist_add_uint64(props,
zfs_prop_to_name(ZFS_PROP_KEYFORMAT), ZFS_KEYFORMAT_RAW);
fnvlist_add_string(props,
zfs_prop_to_name(ZFS_PROP_KEYLOCATION), "prompt");
fnvlist_add_uint64(props,
zfs_prop_to_name(ZFS_PROP_PBKDF2_SALT), 0ULL);
fnvlist_add_uint64(props,
zfs_prop_to_name(ZFS_PROP_PBKDF2_ITERS), 0ULL);
VERIFY0(dsl_crypto_params_create_nvlist(DCP_CMD_NONE, props,
crypto_args, &dcp));
/*
* Cycle through all available encryption implementations
* to verify interoperability.
*/
VERIFY0(gcm_impl_set("cycle"));
VERIFY0(aes_impl_set("cycle"));
fnvlist_free(crypto_args);
fnvlist_free(props);
}
err = dmu_objset_create(dsname, DMU_OST_OTHER, 0, dcp,
ztest_objset_create_cb, NULL);
dsl_crypto_params_free(dcp, !!err);
rand = ztest_random(100);
if (err || rand < 80)
return (err);
if (ztest_opts.zo_verbose >= 5)
(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));
}
static int
ztest_objset_destroy_cb(const char *name, void *arg)
{
(void) arg;
objset_t *os;
dmu_object_info_t doi;
int error;
/*
* Verify that the dataset contains a directory object.
*/
VERIFY0(ztest_dmu_objset_own(name, DMU_OST_OTHER, B_TRUE,
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, B_TRUE, FTAG);
/*
* Destroy the dataset.
*/
if (strchr(name, '@') != NULL) {
error = dsl_destroy_snapshot(name, B_TRUE);
if (error != ECHRNG) {
/*
* The program was executed, but encountered a runtime
* error, such as insufficient slop, or a hold on the
* dataset.
*/
ASSERT0(error);
}
} else {
error = dsl_destroy_head(name);
if (error == ENOSPC) {
/* There could be checkpoint or insufficient slop */
ztest_record_enospc(FTAG);
} else if (error != EBUSY) {
/* There could be a hold on this dataset */
ASSERT0(error);
}
}
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), "%"PRIu64"", id);
error = dmu_objset_snapshot_one(osname, snapname);
if (error == ENOSPC) {
ztest_record_enospc(FTAG);
return (B_FALSE);
}
if (error != 0 && error != EEXIST && error != ECHRNG) {
fatal(B_FALSE, "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@%"PRIu64"",
osname, id);
error = dsl_destroy_snapshot(snapname, B_FALSE);
if (error != 0 && error != ENOENT && error != ECHRNG)
fatal(B_FALSE, "ztest_snapshot_destroy(%s) = %d",
snapname, error);
return (B_TRUE);
}
void
ztest_dmu_objset_create_destroy(ztest_ds_t *zd, uint64_t id)
{
(void) zd;
ztest_ds_t *zdtmp;
int iters;
int error;
objset_t *os, *os2;
char name[ZFS_MAX_DATASET_NAME_LEN];
zilog_t *zilog;
int i;
zdtmp = umem_alloc(sizeof (ztest_ds_t), UMEM_NOFAIL);
(void) pthread_rwlock_rdlock(&ztest_name_lock);
(void) snprintf(name, sizeof (name), "%s/temp_%"PRIu64"",
ztest_opts.zo_pool, id);
/*
* If this dataset exists from a previous run, process its replay log
* half of the time. If we don't replay it, then dsl_destroy_head()
* (invoked from ztest_objset_destroy_cb()) should just throw it away.
*/
if (ztest_random(2) == 0 &&
ztest_dmu_objset_own(name, DMU_OST_OTHER, B_FALSE,
B_TRUE, FTAG, &os) == 0) {
ztest_zd_init(zdtmp, NULL, os);
zil_replay(os, zdtmp, ztest_replay_vector);
ztest_zd_fini(zdtmp);
dmu_objset_disown(os, B_TRUE, 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.
* It may still be present if the destroy above fails with ENOSPC.
*/
error = ztest_dmu_objset_own(name, DMU_OST_OTHER, B_TRUE, B_TRUE,
FTAG, &os);
if (error == 0) {
dmu_objset_disown(os, B_TRUE, FTAG);
ztest_record_enospc(FTAG);
goto out;
}
VERIFY3U(ENOENT, ==, error);
/*
* Verify that we can create a new dataset.
*/
error = ztest_dataset_create(name);
if (error) {
if (error == ENOSPC) {
ztest_record_enospc(FTAG);
goto out;
}
fatal(B_FALSE, "dmu_objset_create(%s) = %d", name, error);
}
VERIFY0(ztest_dmu_objset_own(name, DMU_OST_OTHER, B_FALSE, B_TRUE,
FTAG, &os));
ztest_zd_init(zdtmp, NULL, os);
/*
* Open the intent log for it.
*/
zilog = zil_open(os, ztest_get_data, NULL);
/*
* 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 (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, NULL));
/*
* Verify that we can hold an objset that is also owned.
*/
VERIFY0(dmu_objset_hold(name, FTAG, &os2));
dmu_objset_rele(os2, FTAG);
/*
* Verify that we cannot own an objset that is already owned.
*/
VERIFY3U(EBUSY, ==, ztest_dmu_objset_own(name, DMU_OST_OTHER,
B_FALSE, B_TRUE, FTAG, &os2));
zil_close(zilog);
dmu_objset_disown(os, B_TRUE, FTAG);
ztest_zd_fini(zdtmp);
out:
(void) pthread_rwlock_unlock(&ztest_name_lock);
umem_free(zdtmp, sizeof (ztest_ds_t));
}
/*
* Verify that dmu_snapshot_{create,destroy,open,close} work as expected.
*/
void
ztest_dmu_snapshot_create_destroy(ztest_ds_t *zd, uint64_t id)
{
(void) pthread_rwlock_rdlock(&ztest_name_lock);
(void) ztest_snapshot_destroy(zd->zd_name, id);
(void) ztest_snapshot_create(zd->zd_name, id);
(void) pthread_rwlock_unlock(&ztest_name_lock);
}
/*
* Cleanup non-standard snapshots and clones.
*/
static void
ztest_dsl_dataset_cleanup(char *osname, uint64_t id)
{
char *snap1name;
char *clone1name;
char *snap2name;
char *clone2name;
char *snap3name;
int error;
snap1name = umem_alloc(ZFS_MAX_DATASET_NAME_LEN, UMEM_NOFAIL);
clone1name = umem_alloc(ZFS_MAX_DATASET_NAME_LEN, UMEM_NOFAIL);
snap2name = umem_alloc(ZFS_MAX_DATASET_NAME_LEN, UMEM_NOFAIL);
clone2name = umem_alloc(ZFS_MAX_DATASET_NAME_LEN, UMEM_NOFAIL);
snap3name = umem_alloc(ZFS_MAX_DATASET_NAME_LEN, UMEM_NOFAIL);
(void) snprintf(snap1name, ZFS_MAX_DATASET_NAME_LEN, "%s@s1_%"PRIu64"",
osname, id);
(void) snprintf(clone1name, ZFS_MAX_DATASET_NAME_LEN, "%s/c1_%"PRIu64"",
osname, id);
(void) snprintf(snap2name, ZFS_MAX_DATASET_NAME_LEN, "%s@s2_%"PRIu64"",
clone1name, id);
(void) snprintf(clone2name, ZFS_MAX_DATASET_NAME_LEN, "%s/c2_%"PRIu64"",
osname, id);
(void) snprintf(snap3name, ZFS_MAX_DATASET_NAME_LEN, "%s@s3_%"PRIu64"",
clone1name, id);
error = dsl_destroy_head(clone2name);
if (error && error != ENOENT)
fatal(B_FALSE, "dsl_destroy_head(%s) = %d", clone2name, error);
error = dsl_destroy_snapshot(snap3name, B_FALSE);
if (error && error != ENOENT)
fatal(B_FALSE, "dsl_destroy_snapshot(%s) = %d",
snap3name, error);
error = dsl_destroy_snapshot(snap2name, B_FALSE);
if (error && error != ENOENT)
fatal(B_FALSE, "dsl_destroy_snapshot(%s) = %d",
snap2name, error);
error = dsl_destroy_head(clone1name);
if (error && error != ENOENT)
fatal(B_FALSE, "dsl_destroy_head(%s) = %d", clone1name, error);
error = dsl_destroy_snapshot(snap1name, B_FALSE);
if (error && error != ENOENT)
fatal(B_FALSE, "dsl_destroy_snapshot(%s) = %d",
snap1name, error);
umem_free(snap1name, ZFS_MAX_DATASET_NAME_LEN);
umem_free(clone1name, ZFS_MAX_DATASET_NAME_LEN);
umem_free(snap2name, ZFS_MAX_DATASET_NAME_LEN);
umem_free(clone2name, ZFS_MAX_DATASET_NAME_LEN);
umem_free(snap3name, ZFS_MAX_DATASET_NAME_LEN);
}
/*
* Verify dsl_dataset_promote handles EBUSY
*/
void
ztest_dsl_dataset_promote_busy(ztest_ds_t *zd, uint64_t id)
{
objset_t *os;
char *snap1name;
char *clone1name;
char *snap2name;
char *clone2name;
char *snap3name;
char *osname = zd->zd_name;
int error;
snap1name = umem_alloc(ZFS_MAX_DATASET_NAME_LEN, UMEM_NOFAIL);
clone1name = umem_alloc(ZFS_MAX_DATASET_NAME_LEN, UMEM_NOFAIL);
snap2name = umem_alloc(ZFS_MAX_DATASET_NAME_LEN, UMEM_NOFAIL);
clone2name = umem_alloc(ZFS_MAX_DATASET_NAME_LEN, UMEM_NOFAIL);
snap3name = umem_alloc(ZFS_MAX_DATASET_NAME_LEN, UMEM_NOFAIL);
(void) pthread_rwlock_rdlock(&ztest_name_lock);
ztest_dsl_dataset_cleanup(osname, id);
(void) snprintf(snap1name, ZFS_MAX_DATASET_NAME_LEN, "%s@s1_%"PRIu64"",
osname, id);
(void) snprintf(clone1name, ZFS_MAX_DATASET_NAME_LEN, "%s/c1_%"PRIu64"",
osname, id);
(void) snprintf(snap2name, ZFS_MAX_DATASET_NAME_LEN, "%s@s2_%"PRIu64"",
clone1name, id);
(void) snprintf(clone2name, ZFS_MAX_DATASET_NAME_LEN, "%s/c2_%"PRIu64"",
osname, id);
(void) snprintf(snap3name, ZFS_MAX_DATASET_NAME_LEN, "%s@s3_%"PRIu64"",
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(B_FALSE, "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(B_FALSE, "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(B_FALSE, "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(B_FALSE, "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(B_FALSE, "dmu_objset_create(%s) = %d", clone2name, error);
}
error = ztest_dmu_objset_own(snap2name, DMU_OST_ANY, B_TRUE, B_TRUE,
FTAG, &os);
if (error)
fatal(B_FALSE, "dmu_objset_own(%s) = %d", snap2name, error);
error = dsl_dataset_promote(clone2name, NULL);
if (error == ENOSPC) {
dmu_objset_disown(os, B_TRUE, FTAG);
ztest_record_enospc(FTAG);
goto out;
}
if (error != EBUSY)
fatal(B_FALSE, "dsl_dataset_promote(%s), %d, not EBUSY",
clone2name, error);
dmu_objset_disown(os, B_TRUE, FTAG);
out:
ztest_dsl_dataset_cleanup(osname, id);
(void) pthread_rwlock_unlock(&ztest_name_lock);
umem_free(snap1name, ZFS_MAX_DATASET_NAME_LEN);
umem_free(clone1name, ZFS_MAX_DATASET_NAME_LEN);
umem_free(snap2name, ZFS_MAX_DATASET_NAME_LEN);
umem_free(clone2name, ZFS_MAX_DATASET_NAME_LEN);
umem_free(snap3name, ZFS_MAX_DATASET_NAME_LEN);
}
#undef OD_ARRAY_SIZE
#define OD_ARRAY_SIZE 4
/*
* 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;
int batchsize;
int size;
int b;
size = sizeof (ztest_od_t) * OD_ARRAY_SIZE;
od = umem_alloc(size, UMEM_NOFAIL);
batchsize = OD_ARRAY_SIZE;
for (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, size, B_TRUE) != 0) {
zd->zd_od = NULL;
umem_free(od, size);
return;
}
while (ztest_random(4 * batchsize) != 0)
ztest_io(zd, od[ztest_random(batchsize)].od_object,
ztest_random(ZTEST_RANGE_LOCKS) << SPA_MAXBLOCKSHIFT);
umem_free(od, size);
}
/*
* Rewind the global allocator to verify object allocation backfilling.
*/
void
ztest_dmu_object_next_chunk(ztest_ds_t *zd, uint64_t id)
{
(void) id;
objset_t *os = zd->zd_os;
uint_t 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);
}
#undef OD_ARRAY_SIZE
#define OD_ARRAY_SIZE 2
/*
* Verify that dmu_{read,write} work as expected.
*/
void
ztest_dmu_read_write(ztest_ds_t *zd, uint64_t id)
{
int size;
ztest_od_t *od;
objset_t *os = zd->zd_os;
size = sizeof (ztest_od_t) * OD_ARRAY_SIZE;
od = umem_alloc(size, UMEM_NOFAIL);
dmu_tx_t *tx;
int freeit, error;
uint64_t i, 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, 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, size, B_FALSE) != 0) {
umem_free(od, size);
return;
}
bigobj = od[0].od_object;
packobj = od[1].od_object;
chunksize = od[0].od_gen;
ASSERT3U(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);
umem_free(od, size);
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;
ASSERT3U((uintptr_t)bigH - (uintptr_t)bigbuf, <, bigsize);
ASSERT3U((uintptr_t)bigT - (uintptr_t)bigbuf, <, bigsize);
if (pack->bw_txg > txg)
fatal(B_FALSE,
"future leak: got %"PRIx64", open txg is %"PRIx64"",
pack->bw_txg, txg);
if (pack->bw_data != 0 && pack->bw_index != n + i)
fatal(B_FALSE, "wrong index: "
"got %"PRIx64", wanted %"PRIx64"+%"PRIx64"",
pack->bw_index, n, i);
if (memcmp(pack, bigH, sizeof (bufwad_t)) != 0)
fatal(B_FALSE, "pack/bigH mismatch in %p/%p",
pack, bigH);
if (memcmp(pack, bigT, sizeof (bufwad_t)) != 0)
fatal(B_FALSE, "pack/bigT mismatch in %p/%p",
pack, bigT);
if (freeit) {
memset(pack, 0, 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 %"PRIx64" size %"PRIx64""
" txg %"PRIx64"\n",
bigoff, bigsize, txg);
}
VERIFY0(dmu_free_range(os, bigobj, bigoff, bigsize, tx));
} else {
if (ztest_opts.zo_verbose >= 7) {
(void) printf("writing offset %"PRIx64" size %"PRIx64""
" txg %"PRIx64"\n",
bigoff, bigsize, 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);
VERIFY0(dmu_read(os, packobj, packoff,
packsize, packcheck, DMU_READ_PREFETCH));
VERIFY0(dmu_read(os, bigobj, bigoff,
bigsize, bigcheck, DMU_READ_PREFETCH));
ASSERT0(memcmp(packbuf, packcheck, packsize));
ASSERT0(memcmp(bigbuf, bigcheck, bigsize));
umem_free(packcheck, packsize);
umem_free(bigcheck, bigsize);
}
umem_free(packbuf, packsize);
umem_free(bigbuf, bigsize);
umem_free(od, size);
}
static 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;
ASSERT3U((uintptr_t)bigH - (uintptr_t)bigbuf, <, bigsize);
ASSERT3U((uintptr_t)bigT - (uintptr_t)bigbuf, <, bigsize);
if (pack->bw_txg > txg)
fatal(B_FALSE,
"future leak: got %"PRIx64", open txg is %"PRIx64"",
pack->bw_txg, txg);
if (pack->bw_data != 0 && pack->bw_index != n + i)
fatal(B_FALSE, "wrong index: "
"got %"PRIx64", wanted %"PRIx64"+%"PRIx64"",
pack->bw_index, n, i);
if (memcmp(pack, bigH, sizeof (bufwad_t)) != 0)
fatal(B_FALSE, "pack/bigH mismatch in %p/%p",
pack, bigH);
if (memcmp(pack, bigT, sizeof (bufwad_t)) != 0)
fatal(B_FALSE, "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;
}
}
#undef OD_ARRAY_SIZE
#define OD_ARRAY_SIZE 2
void
ztest_dmu_read_write_zcopy(ztest_ds_t *zd, uint64_t id)
{
objset_t *os = zd->zd_os;
ztest_od_t *od;
dmu_tx_t *tx;
uint64_t i;
int error;
int size;
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;
size = sizeof (ztest_od_t) * OD_ARRAY_SIZE;
od = umem_alloc(size, UMEM_NOFAIL);
/*
* 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_by_dbuf() can be tested for object updates.
*/
/*
* Read the directory info. If it's the first time, set things up.
*/
ztest_od_init(od, 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, size, B_FALSE) != 0) {
umem_free(od, size);
return;
}
bigobj = od[0].od_object;
packobj = od[1].od_object;
blocksize = od[0].od_blocksize;
chunksize = blocksize;
ASSERT3U(chunksize, ==, od[1].od_gen);
VERIFY0(dmu_object_info(os, bigobj, &doi));
VERIFY(ISP2(doi.doi_data_block_size));
VERIFY3U(chunksize, ==, doi.doi_data_block_size);
VERIFY3U(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);
VERIFY0(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_by_dbuf() when it can't directly
* assign an arcbuf to a dbuf.
*/
for (j = 0; j < s; j++) {
if (i != 5 || chunksize < (SPA_MINBLOCKSIZE * 2)) {
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 ||
chunksize < (SPA_MINBLOCKSIZE * 2)) {
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 *));
umem_free(od, size);
dmu_buf_rele(bonus_db, FTAG);
return;
}
/*
* 50% of the time don't read objects in the 1st iteration to
* test dmu_assign_arcbuf_by_dbuf() for the case when there are
* 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 %"PRIx64" size %"PRIx64""
" txg %"PRIx64"\n",
bigoff, bigsize, txg);
}
for (off = bigoff, j = 0; j < s; j++, off += chunksize) {
dmu_buf_t *dbt;
if (i != 5 || chunksize < (SPA_MINBLOCKSIZE * 2)) {
memcpy(bigbuf_arcbufs[j]->b_data,
(caddr_t)bigbuf + (off - bigoff),
chunksize);
} else {
memcpy(bigbuf_arcbufs[2 * j]->b_data,
(caddr_t)bigbuf + (off - bigoff),
chunksize / 2);
memcpy(bigbuf_arcbufs[2 * j + 1]->b_data,
(caddr_t)bigbuf + (off - bigoff) +
chunksize / 2,
chunksize / 2);
}
if (i == 1) {
VERIFY(dmu_buf_hold(os, bigobj, off,
FTAG, &dbt, DMU_READ_NO_PREFETCH) == 0);
}
if (i != 5 || chunksize < (SPA_MINBLOCKSIZE * 2)) {
VERIFY0(dmu_assign_arcbuf_by_dbuf(bonus_db,
off, bigbuf_arcbufs[j], tx));
} else {
VERIFY0(dmu_assign_arcbuf_by_dbuf(bonus_db,
off, bigbuf_arcbufs[2 * j], tx));
VERIFY0(dmu_assign_arcbuf_by_dbuf(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);
VERIFY0(dmu_read(os, packobj, packoff,
packsize, packcheck, DMU_READ_PREFETCH));
VERIFY0(dmu_read(os, bigobj, bigoff,
bigsize, bigcheck, DMU_READ_PREFETCH));
ASSERT0(memcmp(packbuf, packcheck, packsize));
ASSERT0(memcmp(bigbuf, bigcheck, bigsize));
umem_free(packcheck, packsize);
umem_free(bigcheck, bigsize);
}
if (i == 2) {
txg_wait_open(dmu_objset_pool(os), 0, B_TRUE);
} 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 *));
umem_free(od, size);
}
void
ztest_dmu_write_parallel(ztest_ds_t *zd, uint64_t id)
{
(void) id;
ztest_od_t *od;
od = umem_alloc(sizeof (ztest_od_t), UMEM_NOFAIL);
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, ID_PARALLEL, FTAG, 0, DMU_OT_UINT64_OTHER, 0, 0, 0);
if (ztest_object_init(zd, od, sizeof (ztest_od_t), B_FALSE) != 0)
return;
while (ztest_random(10) != 0)
ztest_io(zd, od->od_object, offset);
umem_free(od, sizeof (ztest_od_t));
}
void
ztest_dmu_prealloc(ztest_ds_t *zd, uint64_t id)
{
ztest_od_t *od;
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;
od = umem_alloc(sizeof (ztest_od_t), UMEM_NOFAIL);
ztest_od_init(od, id, FTAG, 0, DMU_OT_UINT64_OTHER, blocksize, 0, 0);
if (ztest_object_init(zd, od, sizeof (ztest_od_t),
!ztest_random(2)) != 0) {
umem_free(od, sizeof (ztest_od_t));
return;
}
if (ztest_truncate(zd, od->od_object, offset, count * blocksize) != 0) {
umem_free(od, sizeof (ztest_od_t));
return;
}
ztest_prealloc(zd, od->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->od_object, randoff, blocksize,
data) != 0)
break;
while (ztest_random(4) != 0)
ztest_io(zd, od->od_object, randoff);
}
umem_free(data, blocksize);
umem_free(od, sizeof (ztest_od_t));
}
/*
* 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;
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;
const char *const hc[2] = { "s.acl.h", ".s.open.h.hyLZlg" };
od = umem_alloc(sizeof (ztest_od_t), UMEM_NOFAIL);
ztest_od_init(od, id, FTAG, 0, DMU_OT_ZAP_OTHER, 0, 0, 0);
if (ztest_object_init(zd, od, sizeof (ztest_od_t),
!ztest_random(2)) != 0)
goto out;
object = od->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)
goto out;
for (i = 0; i < 2; i++) {
value[i] = i;
VERIFY0(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));
VERIFY0(
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++) {
VERIFY0(zap_remove(os, object, hc[i], tx));
}
dmu_tx_commit(tx);
/*
* Generate a bunch 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_%"PRIu64"", prop);
(void) sprintf(txgname, "txg_%"PRIu64"", prop);
memset(value, 0, 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);
VERIFY0(zap_lookup(os, object, txgname, zl_intsize,
zl_ints, &last_txg));
VERIFY0(zap_length(os, object, propname, &zl_intsize,
&zl_ints));
ASSERT3U(zl_intsize, ==, sizeof (uint64_t));
ASSERT3U(zl_ints, ==, ints);
VERIFY0(zap_lookup(os, object, propname, zl_intsize,
zl_ints, value));
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)
goto out;
if (last_txg > txg)
fatal(B_FALSE, "zap future leak: old %"PRIu64" new %"PRIu64"",
last_txg, txg);
for (i = 0; i < ints; i++)
value[i] = txg + object + i;
VERIFY0(zap_update(os, object, txgname, sizeof (uint64_t),
1, &txg, tx));
VERIFY0(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_%"PRIu64"", prop);
(void) sprintf(txgname, "txg_%"PRIu64"", prop);
error = zap_length(os, object, txgname, &zl_intsize, &zl_ints);
if (error == ENOENT)
goto out;
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)
goto out;
VERIFY0(zap_remove(os, object, txgname, tx));
VERIFY0(zap_remove(os, object, propname, tx));
dmu_tx_commit(tx);
out:
umem_free(od, sizeof (ztest_od_t));
}
/*
* Test case 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;
uint64_t object, txg, value;
od = umem_alloc(sizeof (ztest_od_t), UMEM_NOFAIL);
ztest_od_init(od, id, FTAG, 0, DMU_OT_ZAP_OTHER, 0, 0, 0);
if (ztest_object_init(zd, od, sizeof (ztest_od_t),
!ztest_random(2)) != 0)
goto out;
object = od->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 (value = 0; value < 2050; value++) {
char name[ZFS_MAX_DATASET_NAME_LEN];
dmu_tx_t *tx;
int error;
(void) snprintf(name, sizeof (name), "fzap-%"PRIu64"-%"PRIu64"",
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)
goto out;
error = zap_add(os, object, name, sizeof (uint64_t), 1,
&value, tx);
ASSERT(error == 0 || error == EEXIST);
dmu_tx_commit(tx);
}
out:
umem_free(od, sizeof (ztest_od_t));
}
void
ztest_zap_parallel(ztest_ds_t *zd, uint64_t id)
{
(void) id;
objset_t *os = zd->zd_os;
ztest_od_t *od;
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;
od = umem_alloc(sizeof (ztest_od_t), UMEM_NOFAIL);
ztest_od_init(od, ID_PARALLEL, FTAG, micro, DMU_OT_ZAP_OTHER, 0, 0, 0);
if (ztest_object_init(zd, od, sizeof (ztest_od_t), B_FALSE) != 0) {
umem_free(od, sizeof (ztest_od_t));
return;
}
object = od->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));
ASSERT3S(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) {
umem_free(od, sizeof (ztest_od_t));
return;
}
memcpy(string_value, name, namelen);
} else {
tx = NULL;
txg = 0;
memset(string_value, 0, 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 &&
memcmp(name, data, namelen) != 0)
fatal(B_FALSE, "name '%s' != val '%s' len %d",
name, (char *)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:
VERIFY0(zap_update(os, object, name, wsize, wc, data, tx));
break;
case 4:
error = zap_remove(os, object, name, tx);
ASSERT(error == 0 || error == ENOENT);
break;
}
if (tx != NULL)
dmu_tx_commit(tx);
umem_free(od, sizeof (ztest_od_t));
}
/*
* 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;
VERIFY3P(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(B_FALSE,
"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;
}
ASSERT(data->zcd_added);
ASSERT3U(data->zcd_txg, !=, 0);
(void) mutex_enter(&zcl.zcl_callbacks_lock);
/* See if this cb was called more quickly */
if ((synced_txg - data->zcd_txg) < zc_min_txg_delay)
zc_min_txg_delay = synced_txg - data->zcd_txg;
/* Remove our callback from the list */
list_remove(&zcl.zcl_callbacks, data);
(void) mutex_exit(&zcl.zcl_callbacks_lock);
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);
list_link_init(&cb_data->zcd_node);
return (cb_data);
}
/*
* 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;
dmu_tx_t *tx;
ztest_cb_data_t *cb_data[3], *tmp_cb;
uint64_t old_txg, txg;
int i, error = 0;
od = umem_alloc(sizeof (ztest_od_t), UMEM_NOFAIL);
ztest_od_init(od, id, FTAG, 0, DMU_OT_UINT64_OTHER, 0, 0, 0);
if (ztest_object_init(zd, od, sizeof (ztest_od_t), B_FALSE) != 0) {
umem_free(od, sizeof (ztest_od_t));
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->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));
}
umem_free(od, sizeof (ztest_od_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.
*/
VERIFY0(dmu_read(os, od->od_object, 0, sizeof (uint64_t),
&old_txg, DMU_READ_PREFETCH));
if (old_txg > txg)
fatal(B_FALSE,
"future leak: got %"PRIu64", open txg is %"PRIu64"",
old_txg, txg);
dmu_write(os, od->od_object, 0, sizeof (uint64_t), &txg, tx);
(void) 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 &&
tmp_cb->zcd_txg + ZTEST_COMMIT_CB_THRESH < txg) {
fatal(B_FALSE,
"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];
}
zc_cb_counter += 3;
(void) mutex_exit(&zcl.zcl_callbacks_lock);
dmu_tx_commit(tx);
umem_free(od, sizeof (ztest_od_t));
}
/*
* 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)
{
(void) 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;
ztest_object_lock(zd, obj, RL_READER);
if (dmu_bonus_hold(os, obj, FTAG, &db) != 0) {
ztest_object_unlock(zd, obj);
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);
ztest_object_unlock(zd, obj);
}
}
void
ztest_dsl_prop_get_set(ztest_ds_t *zd, uint64_t id)
{
(void) id;
zfs_prop_t proplist[] = {
ZFS_PROP_CHECKSUM,
ZFS_PROP_COMPRESSION,
ZFS_PROP_COPIES,
ZFS_PROP_DEDUP
};
(void) pthread_rwlock_rdlock(&ztest_name_lock);
for (int p = 0; p < sizeof (proplist) / sizeof (proplist[0]); p++) {
int error = ztest_dsl_prop_set_uint64(zd->zd_name, proplist[p],
ztest_random_dsl_prop(proplist[p]), (int)ztest_random(2));
ASSERT(error == 0 || error == ENOSPC);
}
int error = ztest_dsl_prop_set_uint64(zd->zd_name, ZFS_PROP_RECORDSIZE,
ztest_random_blocksize(), (int)ztest_random(2));
ASSERT(error == 0 || error == ENOSPC);
(void) pthread_rwlock_unlock(&ztest_name_lock);
}
void
ztest_spa_prop_get_set(ztest_ds_t *zd, uint64_t id)
{
(void) zd, (void) id;
nvlist_t *props = NULL;
(void) pthread_rwlock_rdlock(&ztest_name_lock);
(void) ztest_spa_prop_set_uint64(ZPOOL_PROP_AUTOTRIM, ztest_random(2));
VERIFY0(spa_prop_get(ztest_spa, &props));
if (ztest_opts.zo_verbose >= 6)
dump_nvlist(props, 4);
fnvlist_free(props);
(void) pthread_rwlock_unlock(&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;
(void) pthread_rwlock_rdlock(&ztest_name_lock);
dmu_objset_name(os, osname);
(void) snprintf(snapname, sizeof (snapname), "sh1_%"PRIu64"", id);
(void) snprintf(fullname, sizeof (fullname), "%s@%s", osname, snapname);
(void) snprintf(clonename, sizeof (clonename), "%s/ch1_%"PRIu64"",
osname, id);
(void) snprintf(tag, sizeof (tag), "tag_%"PRIu64"", 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(B_FALSE, "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(B_FALSE, "dmu_objset_clone(%s) = %d", clonename, error);
}
error = dsl_destroy_snapshot(fullname, B_TRUE);
if (error) {
fatal(B_FALSE, "dsl_destroy_snapshot(%s, B_TRUE) = %d",
fullname, error);
}
error = dsl_destroy_head(clonename);
if (error)
fatal(B_FALSE, "dsl_destroy_head(%s) = %d", clonename, error);
error = dmu_objset_hold(fullname, FTAG, &origin);
if (error != ENOENT)
fatal(B_FALSE, "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(B_FALSE, "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(B_FALSE, "dsl_dataset_user_hold(%s, %s) = %u",
fullname, tag, error);
}
error = dsl_destroy_snapshot(fullname, B_FALSE);
if (error != EBUSY) {
fatal(B_FALSE, "dsl_destroy_snapshot(%s, B_FALSE) = %d",
fullname, error);
}
error = dsl_destroy_snapshot(fullname, B_TRUE);
if (error) {
fatal(B_FALSE, "dsl_destroy_snapshot(%s, B_TRUE) = %d",
fullname, error);
}
error = user_release_one(fullname, tag);
if (error)
fatal(B_FALSE, "user_release_one(%s, %s) = %d",
fullname, tag, error);
VERIFY3U(dmu_objset_hold(fullname, FTAG, &origin), ==, ENOENT);
out:
(void) pthread_rwlock_unlock(&ztest_name_lock);
}
/*
* Inject random faults into the on-disk data.
*/
void
ztest_fault_inject(ztest_ds_t *zd, uint64_t id)
{
(void) zd, (void) 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;
char *pathrand;
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;
path0 = umem_alloc(MAXPATHLEN, UMEM_NOFAIL);
pathrand = umem_alloc(MAXPATHLEN, UMEM_NOFAIL);
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);
goto out;
}
maxfaults = MAXFAULTS(zs);
leaves = MAX(zs->zs_mirrors, 1) * ztest_opts.zo_raid_children;
mirror_save = zs->zs_mirrors;
mutex_exit(&ztest_vdev_lock);
ASSERT3U(leaves, >=, 1);
/*
* While ztest is running the number of leaves will not change. This
* is critical for the fault injection logic as it determines where
* errors can be safely injected such that they are always repairable.
*
* When restarting ztest a different number of leaves may be requested
* which will shift the regions to be damaged. This is fine as long
* as the pool has been scrubbed prior to using the new mapping.
* Failure to do can result in non-repairable damage being injected.
*/
if (ztest_pool_scrubbed == B_FALSE)
goto out;
/*
* 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.
*/
(void) pthread_rwlock_rdlock(&ztest_name_lock);
/*
* 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, MAXPATHLEN, ztest_dev_template,
ztest_opts.zo_dir, ztest_opts.zo_pool,
top * leaves + zs->zs_splits);
(void) snprintf(pathrand, MAXPATHLEN, 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 unwritable, 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_file->f_fd);
vf->vf_file->f_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);
(void) pthread_rwlock_unlock(&ztest_name_lock);
goto out;
}
vd0 = sav->sav_vdevs[ztest_random(sav->sav_count)];
guid0 = vd0->vdev_guid;
(void) strlcpy(path0, vd0->vdev_path, MAXPATHLEN);
(void) strlcpy(pathrand, vd0->vdev_path, MAXPATHLEN);
leaf = 0;
leaves = 1;
maxfaults = INT_MAX; /* no limit on cache devices */
}
spa_config_exit(spa, SCL_STATE, FTAG);
(void) pthread_rwlock_unlock(&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
* dsl_destroy_head() to fail with EBUSY thus
* leaving the dataset in an inconsistent state.
*/
if (islog)
(void) pthread_rwlock_wrlock(&ztest_name_lock);
VERIFY3U(vdev_offline(spa, guid0, flags), !=, EBUSY);
if (islog)
(void) pthread_rwlock_unlock(&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)
goto out;
/*
* 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 */
goto out;
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).
*
* To achieve this we divide each leaf device into
* chunks of size (# leaves * SPA_MAXBLOCKSIZE * 4).
* Each chunk is further divided into error-injection
* ranges (can accept errors) and clear ranges (we do
* not inject errors in those). Each error-injection
* range can accept errors only for a single leaf vdev.
* Error-injection ranges are separated by clear ranges.
*
* For example, with 3 leaves, each chunk looks like:
* 0 to 32M: injection range for leaf 0
* 32M to 64M: clear range - no injection allowed
* 64M to 96M: injection range for leaf 1
* 96M to 128M: clear range - no injection allowed
* 128M to 160M: injection range for leaf 2
* 160M to 192M: clear range - no injection allowed
*
* Each clear range must be large enough such that a
* single block cannot straddle it. This way a block
* can't be a target in two different injection ranges
* (on different leaf vdevs).
*/
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);
goto out;
}
if (pwrite(fd, &bad, sizeof (bad), offset) != sizeof (bad))
fatal(B_TRUE,
"can't inject bad word at 0x%"PRIx64" in %s",
offset, pathrand);
mutex_exit(&ztest_vdev_lock);
if (ztest_opts.zo_verbose >= 7)
(void) printf("injected bad word into %s,"
" offset 0x%"PRIx64"\n", pathrand, offset);
}
(void) close(fd);
out:
umem_free(path0, MAXPATHLEN);
umem_free(pathrand, MAXPATHLEN);
}
/*
* By design ztest will never inject uncorrectable damage in to the pool.
* Issue a scrub, wait for it to complete, and verify there is never any
* persistent damage.
*
* Only after a full scrub has been completed is it safe to start injecting
* data corruption. See the comment in zfs_fault_inject().
*/
static int
ztest_scrub_impl(spa_t *spa)
{
int error = spa_scan(spa, POOL_SCAN_SCRUB);
if (error)
return (error);
while (dsl_scan_scrubbing(spa_get_dsl(spa)))
txg_wait_synced(spa_get_dsl(spa), 0);
if (spa_approx_errlog_size(spa) > 0)
return (ECKSUM);
ztest_pool_scrubbed = B_TRUE;
return (0);
}
/*
* Scrub the pool.
*/
void
ztest_scrub(ztest_ds_t *zd, uint64_t id)
{
(void) zd, (void) id;
spa_t *spa = ztest_spa;
int error;
/*
* Scrub in progress by device removal.
*/
if (ztest_device_removal_active)
return;
/*
* Start a scrub, wait a moment, then force a restart.
*/
(void) spa_scan(spa, POOL_SCAN_SCRUB);
(void) poll(NULL, 0, 100);
error = ztest_scrub_impl(spa);
if (error == EBUSY)
error = 0;
ASSERT0(error);
}
/*
* Change the guid for the pool.
*/
void
ztest_reguid(ztest_ds_t *zd, uint64_t id)
{
(void) zd, (void) id;
spa_t *spa = ztest_spa;
uint64_t orig, load;
int error;
ztest_shared_t *zs = ztest_shared;
if (ztest_opts.zo_mmp_test)
return;
orig = spa_guid(spa);
load = spa_load_guid(spa);
(void) pthread_rwlock_wrlock(&ztest_name_lock);
error = spa_change_guid(spa);
zs->zs_guid = spa_guid(spa);
(void) pthread_rwlock_unlock(&ztest_name_lock);
if (error != 0)
return;
if (ztest_opts.zo_verbose >= 4) {
(void) printf("Changed guid old %"PRIu64" -> %"PRIu64"\n",
orig, spa_guid(spa));
}
VERIFY3U(orig, !=, spa_guid(spa));
VERIFY3U(load, ==, spa_load_guid(spa));
}
void
ztest_blake3(ztest_ds_t *zd, uint64_t id)
{
(void) zd, (void) id;
hrtime_t end = gethrtime() + NANOSEC;
zio_cksum_salt_t salt;
void *salt_ptr = &salt.zcs_bytes;
struct abd *abd_data, *abd_meta;
void *buf, *templ;
int i, *ptr;
uint32_t size;
BLAKE3_CTX ctx;
const zfs_impl_t *blake3 = zfs_impl_get_ops("blake3");
size = ztest_random_blocksize();
buf = umem_alloc(size, UMEM_NOFAIL);
abd_data = abd_alloc(size, B_FALSE);
abd_meta = abd_alloc(size, B_TRUE);
for (i = 0, ptr = buf; i < size / sizeof (*ptr); i++, ptr++)
*ptr = ztest_random(UINT_MAX);
memset(salt_ptr, 'A', 32);
abd_copy_from_buf_off(abd_data, buf, 0, size);
abd_copy_from_buf_off(abd_meta, buf, 0, size);
while (gethrtime() <= end) {
int run_count = 100;
zio_cksum_t zc_ref1, zc_ref2;
zio_cksum_t zc_res1, zc_res2;
void *ref1 = &zc_ref1;
void *ref2 = &zc_ref2;
void *res1 = &zc_res1;
void *res2 = &zc_res2;
/* BLAKE3_KEY_LEN = 32 */
VERIFY0(blake3->setname("generic"));
templ = abd_checksum_blake3_tmpl_init(&salt);
Blake3_InitKeyed(&ctx, salt_ptr);
Blake3_Update(&ctx, buf, size);
Blake3_Final(&ctx, ref1);
zc_ref2 = zc_ref1;
ZIO_CHECKSUM_BSWAP(&zc_ref2);
abd_checksum_blake3_tmpl_free(templ);
VERIFY0(blake3->setname("cycle"));
while (run_count-- > 0) {
/* Test current implementation */
Blake3_InitKeyed(&ctx, salt_ptr);
Blake3_Update(&ctx, buf, size);
Blake3_Final(&ctx, res1);
zc_res2 = zc_res1;
ZIO_CHECKSUM_BSWAP(&zc_res2);
VERIFY0(memcmp(ref1, res1, 32));
VERIFY0(memcmp(ref2, res2, 32));
/* Test ABD - data */
templ = abd_checksum_blake3_tmpl_init(&salt);
abd_checksum_blake3_native(abd_data, size,
templ, &zc_res1);
abd_checksum_blake3_byteswap(abd_data, size,
templ, &zc_res2);
VERIFY0(memcmp(ref1, res1, 32));
VERIFY0(memcmp(ref2, res2, 32));
/* Test ABD - metadata */
abd_checksum_blake3_native(abd_meta, size,
templ, &zc_res1);
abd_checksum_blake3_byteswap(abd_meta, size,
templ, &zc_res2);
abd_checksum_blake3_tmpl_free(templ);
VERIFY0(memcmp(ref1, res1, 32));
VERIFY0(memcmp(ref2, res2, 32));
}
}
abd_free(abd_data);
abd_free(abd_meta);
umem_free(buf, size);
}
void
ztest_fletcher(ztest_ds_t *zd, uint64_t id)
{
(void) zd, (void) id;
hrtime_t end = gethrtime() + NANOSEC;
while (gethrtime() <= end) {
int run_count = 100;
void *buf;
struct abd *abd_data, *abd_meta;
uint32_t size;
int *ptr;
int i;
zio_cksum_t zc_ref;
zio_cksum_t zc_ref_byteswap;
size = ztest_random_blocksize();
buf = umem_alloc(size, UMEM_NOFAIL);
abd_data = abd_alloc(size, B_FALSE);
abd_meta = abd_alloc(size, B_TRUE);
for (i = 0, ptr = buf; i < size / sizeof (*ptr); i++, ptr++)
*ptr = ztest_random(UINT_MAX);
abd_copy_from_buf_off(abd_data, buf, 0, size);
abd_copy_from_buf_off(abd_meta, buf, 0, size);
VERIFY0(fletcher_4_impl_set("scalar"));
fletcher_4_native(buf, size, NULL, &zc_ref);
fletcher_4_byteswap(buf, size, NULL, &zc_ref_byteswap);
VERIFY0(fletcher_4_impl_set("cycle"));
while (run_count-- > 0) {
zio_cksum_t zc;
zio_cksum_t zc_byteswap;
fletcher_4_byteswap(buf, size, NULL, &zc_byteswap);
fletcher_4_native(buf, size, NULL, &zc);
VERIFY0(memcmp(&zc, &zc_ref, sizeof (zc)));
VERIFY0(memcmp(&zc_byteswap, &zc_ref_byteswap,
sizeof (zc_byteswap)));
/* Test ABD - data */
abd_fletcher_4_byteswap(abd_data, size, NULL,
&zc_byteswap);
abd_fletcher_4_native(abd_data, size, NULL, &zc);
VERIFY0(memcmp(&zc, &zc_ref, sizeof (zc)));
VERIFY0(memcmp(&zc_byteswap, &zc_ref_byteswap,
sizeof (zc_byteswap)));
/* Test ABD - metadata */
abd_fletcher_4_byteswap(abd_meta, size, NULL,
&zc_byteswap);
abd_fletcher_4_native(abd_meta, size, NULL, &zc);
VERIFY0(memcmp(&zc, &zc_ref, sizeof (zc)));
VERIFY0(memcmp(&zc_byteswap, &zc_ref_byteswap,
sizeof (zc_byteswap)));
}
umem_free(buf, size);
abd_free(abd_data);
abd_free(abd_meta);
}
}
void
ztest_fletcher_incr(ztest_ds_t *zd, uint64_t id)
{
(void) zd, (void) id;
void *buf;
size_t size;
int *ptr;
int i;
zio_cksum_t zc_ref;
zio_cksum_t zc_ref_bswap;
hrtime_t end = gethrtime() + NANOSEC;
while (gethrtime() <= end) {
int run_count = 100;
size = ztest_random_blocksize();
buf = umem_alloc(size, UMEM_NOFAIL);
for (i = 0, ptr = buf; i < size / sizeof (*ptr); i++, ptr++)
*ptr = ztest_random(UINT_MAX);
VERIFY0(fletcher_4_impl_set("scalar"));
fletcher_4_native(buf, size, NULL, &zc_ref);
fletcher_4_byteswap(buf, size, NULL, &zc_ref_bswap);
VERIFY0(fletcher_4_impl_set("cycle"));
while (run_count-- > 0) {
zio_cksum_t zc;
zio_cksum_t zc_bswap;
size_t pos = 0;
ZIO_SET_CHECKSUM(&zc, 0, 0, 0, 0);
ZIO_SET_CHECKSUM(&zc_bswap, 0, 0, 0, 0);
while (pos < size) {
size_t inc = 64 * ztest_random(size / 67);
/* sometimes add few bytes to test non-simd */
if (ztest_random(100) < 10)
inc += P2ALIGN(ztest_random(64),
sizeof (uint32_t));
if (inc > (size - pos))
inc = size - pos;
fletcher_4_incremental_native(buf + pos, inc,
&zc);
fletcher_4_incremental_byteswap(buf + pos, inc,
&zc_bswap);
pos += inc;
}
VERIFY3U(pos, ==, size);
VERIFY(ZIO_CHECKSUM_EQUAL(zc, zc_ref));
VERIFY(ZIO_CHECKSUM_EQUAL(zc_bswap, zc_ref_bswap));
/*
* verify if incremental on the whole buffer is
* equivalent to non-incremental version
*/
ZIO_SET_CHECKSUM(&zc, 0, 0, 0, 0);
ZIO_SET_CHECKSUM(&zc_bswap, 0, 0, 0, 0);
fletcher_4_incremental_native(buf, size, &zc);
fletcher_4_incremental_byteswap(buf, size, &zc_bswap);
VERIFY(ZIO_CHECKSUM_EQUAL(zc, zc_ref));
VERIFY(ZIO_CHECKSUM_EQUAL(zc_bswap, zc_ref_bswap));
}
umem_free(buf, size);
}
}
static int
ztest_set_global_vars(void)
{
for (size_t i = 0; i < ztest_opts.zo_gvars_count; i++) {
char *kv = ztest_opts.zo_gvars[i];
VERIFY3U(strlen(kv), <=, ZO_GVARS_MAX_ARGLEN);
VERIFY3U(strlen(kv), >, 0);
int err = set_global_var(kv);
if (ztest_opts.zo_verbose > 0) {
(void) printf("setting global var %s ... %s\n", kv,
err ? "failed" : "ok");
}
if (err != 0) {
(void) fprintf(stderr,
"failed to set global var '%s'\n", kv);
return (err);
}
}
return (0);
}
static char **
ztest_global_vars_to_zdb_args(void)
{
char **args = calloc(2*ztest_opts.zo_gvars_count + 1, sizeof (char *));
char **cur = args;
if (args == NULL)
return (NULL);
for (size_t i = 0; i < ztest_opts.zo_gvars_count; i++) {
*cur++ = (char *)"-o";
*cur++ = ztest_opts.zo_gvars[i];
}
ASSERT3P(cur, ==, &args[2*ztest_opts.zo_gvars_count]);
*cur = NULL;
return (args);
}
/* The end of strings is indicated by a NULL element */
static char *
join_strings(char **strings, const char *sep)
{
size_t totallen = 0;
for (char **sp = strings; *sp != NULL; sp++) {
totallen += strlen(*sp);
totallen += strlen(sep);
}
if (totallen > 0) {
ASSERT(totallen >= strlen(sep));
totallen -= strlen(sep);
}
size_t buflen = totallen + 1;
char *o = umem_alloc(buflen, UMEM_NOFAIL); /* trailing 0 byte */
o[0] = '\0';
for (char **sp = strings; *sp != NULL; sp++) {
size_t would;
would = strlcat(o, *sp, buflen);
VERIFY3U(would, <, buflen);
if (*(sp+1) == NULL) {
break;
}
would = strlcat(o, sep, buflen);
VERIFY3U(would, <, buflen);
}
ASSERT3S(strlen(o), ==, totallen);
return (o);
}
static int
ztest_check_path(char *path)
{
struct stat s;
/* return true on success */
return (!stat(path, &s));
}
static void
ztest_get_zdb_bin(char *bin, int len)
{
char *zdb_path;
/*
* Try to use $ZDB and in-tree zdb path. If not successful, just
* let popen to search through PATH.
*/
if ((zdb_path = getenv("ZDB"))) {
strlcpy(bin, zdb_path, len); /* In env */
if (!ztest_check_path(bin)) {
ztest_dump_core = 0;
fatal(B_TRUE, "invalid ZDB '%s'", bin);
}
return;
}
VERIFY3P(realpath(getexecname(), bin), !=, NULL);
if (strstr(bin, ".libs/ztest")) {
strstr(bin, ".libs/ztest")[0] = '\0'; /* In-tree */
strcat(bin, "zdb");
if (ztest_check_path(bin))
return;
}
strcpy(bin, "zdb");
}
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;
}
}
VERIFY3S(eligible_idx, >, 0);
uint64_t child_no = ztest_random(eligible_idx);
return (ztest_random_concrete_vdev_leaf(eligible[child_no]));
}
void
ztest_initialize(ztest_ds_t *zd, uint64_t id)
{
(void) zd, (void) 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 %px, guid %llu", rand_vd, (u_longlong_t)guid);
spa_config_exit(spa, SCL_VDEV, FTAG);
uint64_t cmd = ztest_random(POOL_INITIALIZE_FUNCS);
nvlist_t *vdev_guids = fnvlist_alloc();
nvlist_t *vdev_errlist = fnvlist_alloc();
fnvlist_add_uint64(vdev_guids, path, guid);
error = spa_vdev_initialize(spa, vdev_guids, cmd, vdev_errlist);
fnvlist_free(vdev_guids);
fnvlist_free(vdev_errlist);
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_START:
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);
}
void
ztest_trim(ztest_ds_t *zd, uint64_t id)
{
(void) zd, (void) 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_trim_thread != NULL;
zfs_dbgmsg("vd %p, guid %llu", rand_vd, (u_longlong_t)guid);
spa_config_exit(spa, SCL_VDEV, FTAG);
uint64_t cmd = ztest_random(POOL_TRIM_FUNCS);
uint64_t rate = 1 << ztest_random(30);
boolean_t partial = (ztest_random(5) > 0);
boolean_t secure = (ztest_random(5) > 0);
nvlist_t *vdev_guids = fnvlist_alloc();
nvlist_t *vdev_errlist = fnvlist_alloc();
fnvlist_add_uint64(vdev_guids, path, guid);
error = spa_vdev_trim(spa, vdev_guids, cmd, rate, partial,
secure, vdev_errlist);
fnvlist_free(vdev_guids);
fnvlist_free(vdev_errlist);
switch (cmd) {
case POOL_TRIM_CANCEL:
if (ztest_opts.zo_verbose >= 4) {
(void) printf("Cancel TRIM %s", path);
if (!active)
(void) printf(" failed (no TRIM active)");
(void) printf("\n");
}
break;
case POOL_TRIM_START:
if (ztest_opts.zo_verbose >= 4) {
(void) printf("Start TRIM %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_TRIM_SUSPEND:
if (ztest_opts.zo_verbose >= 4) {
(void) printf("Suspend TRIM %s", path);
if (!active)
(void) printf(" failed (no TRIM active)");
(void) printf("\n");
}
break;
}
free(path);
mutex_exit(&ztest_vdev_lock);
}
/*
* Verify pool integrity by running zdb.
*/
static void
ztest_run_zdb(uint64_t guid)
{
int status;
char *bin;
char *zdb;
char *zbuf;
const int len = MAXPATHLEN + MAXNAMELEN + 20;
FILE *fp;
bin = umem_alloc(len, UMEM_NOFAIL);
zdb = umem_alloc(len, UMEM_NOFAIL);
zbuf = umem_alloc(1024, UMEM_NOFAIL);
ztest_get_zdb_bin(bin, len);
char **set_gvars_args = ztest_global_vars_to_zdb_args();
if (set_gvars_args == NULL) {
fatal(B_FALSE, "Failed to allocate memory in "
"ztest_global_vars_to_zdb_args(). Cannot run zdb.\n");
}
char *set_gvars_args_joined = join_strings(set_gvars_args, " ");
free(set_gvars_args);
size_t would = snprintf(zdb, len,
"%s -bcc%s%s -G -d -Y -e -y %s -p %s %"PRIu64,
bin,
ztest_opts.zo_verbose >= 3 ? "s" : "",
ztest_opts.zo_verbose >= 4 ? "v" : "",
set_gvars_args_joined,
ztest_opts.zo_dir,
guid);
ASSERT3U(would, <, len);
umem_free(set_gvars_args_joined, strlen(set_gvars_args_joined) + 1);
if (ztest_opts.zo_verbose >= 5)
(void) printf("Executing %s\n", zdb);
fp = popen(zdb, "r");
while (fgets(zbuf, 1024, fp) != NULL)
if (ztest_opts.zo_verbose >= 3)
(void) printf("%s", zbuf);
status = pclose(fp);
if (status == 0)
goto out;
ztest_dump_core = 0;
if (WIFEXITED(status))
fatal(B_FALSE, "'%s' exit code %d", zdb, WEXITSTATUS(status));
else
fatal(B_FALSE, "'%s' died with signal %d",
zdb, WTERMSIG(status));
out:
umem_free(bin, len);
umem_free(zdb, len);
umem_free(zbuf, 1024);
}
static void
ztest_walk_pool_directory(const char *header)
{
spa_t *spa = NULL;
if (ztest_opts.zo_verbose >= 6)
(void) puts(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.
*/
VERIFY0(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.
*/
VERIFY0(spa_export(oldname, &config, B_FALSE, B_FALSE));
ztest_walk_pool_directory("pools after export");
/*
* Try to import it.
*/
newconfig = spa_tryimport(config);
ASSERT3P(newconfig, !=, NULL);
fnvlist_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.
*/
VERIFY0(spa_open(newname, &spa, FTAG));
ASSERT3U(pool_guid, ==, spa_guid(spa));
spa_close(spa, FTAG);
fnvlist_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 __attribute__((noreturn)) 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);
}
thread_exit();
}
static __attribute__((noreturn)) void
ztest_deadman_thread(void *arg)
{
ztest_shared_t *zs = arg;
spa_t *spa = ztest_spa;
hrtime_t delay, overdue, last_run = gethrtime();
delay = (zs->zs_thread_stop - zs->zs_thread_start) +
MSEC2NSEC(zfs_deadman_synctime_ms);
while (!ztest_exiting) {
/*
* Wait for the delay timer while checking occasionally
* if we should stop.
*/
if (gethrtime() < last_run + delay) {
(void) poll(NULL, 0, 1000);
continue;
}
/*
* 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(B_FALSE,
"aborting test after %llu seconds because "
"pool has transitioned to a suspended state.",
(u_longlong_t)zfs_deadman_synctime_ms / 1000);
}
vdev_deadman(spa->spa_root_vdev, FTAG);
/*
* If the process doesn't complete within a grace period of
* zfs_deadman_synctime_ms over the expected finish time,
* then it may be hung and is terminated.
*/
overdue = zs->zs_proc_stop + MSEC2NSEC(zfs_deadman_synctime_ms);
if (gethrtime() > overdue) {
fatal(B_FALSE,
"aborting test after %llu seconds because "
"the process is overdue for termination.",
(gethrtime() - zs->zs_proc_start) / NANOSEC);
}
(void) printf("ztest has been running for %lld seconds\n",
(gethrtime() - zs->zs_proc_start) / NANOSEC);
last_run = gethrtime();
delay = MSEC2NSEC(zfs_deadman_checktime_ms);
}
thread_exit();
}
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();
int i;
for (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)
(void) printf("%6.2f sec in %s\n",
(double)functime / NANOSEC, zi->zi_funcname);
}
static __attribute__((noreturn)) 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);
}
}
thread_exit();
}
static void
ztest_dataset_name(char *dsname, const 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];
int t;
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 (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.
*/
VERIFY0(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);
(void) pthread_rwlock_rdlock(&ztest_name_lock);
error = ztest_dataset_create(name);
if (error == ENOSPC) {
(void) pthread_rwlock_unlock(&ztest_name_lock);
ztest_record_enospc(FTAG);
return (error);
}
ASSERT(error == 0 || error == EEXIST);
VERIFY0(ztest_dmu_objset_own(name, DMU_OST_OTHER, B_FALSE,
B_TRUE, zd, &os));
(void) pthread_rwlock_unlock(&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(B_FALSE, "missing log records: "
"claimed %"PRIu64" < committed %"PRIu64"",
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 %"PRIu64" blocks, "
"%"PRIu64" records, seq %"PRIu64"\n",
zd->zd_name,
zilog->zl_parse_blk_count,
zilog->zl_parse_lr_count,
zilog->zl_replaying_seq);
zilog = zil_open(os, ztest_get_data, NULL);
if (zilog->zl_replaying_seq != 0 &&
zilog->zl_replaying_seq < committed_seq)
fatal(B_FALSE, "missing log records: "
"replayed %"PRIu64" < committed %"PRIu64"",
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, B_TRUE, zd);
ztest_zd_fini(zd);
}
static int
ztest_replay_zil_cb(const char *name, void *arg)
{
(void) arg;
objset_t *os;
ztest_ds_t *zdtmp;
VERIFY0(ztest_dmu_objset_own(name, DMU_OST_ANY, B_TRUE,
B_TRUE, FTAG, &os));
zdtmp = umem_alloc(sizeof (ztest_ds_t), UMEM_NOFAIL);
ztest_zd_init(zdtmp, NULL, os);
zil_replay(os, zdtmp, ztest_replay_vector);
ztest_zd_fini(zdtmp);
if (dmu_objset_zil(os)->zl_parse_lr_count != 0 &&
ztest_opts.zo_verbose >= 6) {
zilog_t *zilog = dmu_objset_zil(os);
(void) printf("%s replay %"PRIu64" blocks, "
"%"PRIu64" records, seq %"PRIu64"\n",
name,
zilog->zl_parse_blk_count,
zilog->zl_parse_lr_count,
zilog->zl_replaying_seq);
}
umem_free(zdtmp, sizeof (ztest_ds_t));
dmu_objset_disown(os, B_TRUE, FTAG);
return (0);
}
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(SPA_MODE_READ | SPA_MODE_WRITE);
VERIFY0(spa_open(ztest_opts.zo_pool, &spa, FTAG));
VERIFY0(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(SPA_MODE_READ | SPA_MODE_WRITE);
VERIFY0(spa_open(ztest_opts.zo_pool, &spa, FTAG));
ASSERT3U(spa_freeze_txg(spa), ==, UINT64_MAX);
VERIFY0(ztest_dataset_open(0));
ztest_spa = spa;
txg_wait_synced(spa_get_dsl(spa), 0);
ztest_dataset_close(0);
ztest_reguid(NULL, 0);
spa_close(spa, FTAG);
kernel_fini();
}
static void
ztest_import_impl(void)
{
importargs_t args = { 0 };
nvlist_t *cfg = NULL;
int nsearch = 1;
char *searchdirs[nsearch];
int flags = ZFS_IMPORT_MISSING_LOG;
searchdirs[0] = ztest_opts.zo_dir;
args.paths = nsearch;
args.path = searchdirs;
args.can_be_active = B_FALSE;
libpc_handle_t lpch = {
.lpc_lib_handle = NULL,
.lpc_ops = &libzpool_config_ops,
.lpc_printerr = B_TRUE
};
VERIFY0(zpool_find_config(&lpch, ztest_opts.zo_pool, &cfg, &args));
VERIFY0(spa_import(ztest_opts.zo_pool, cfg, NULL, flags));
fnvlist_free(cfg);
}
/*
* Import a storage pool with the given name.
*/
static void
ztest_import(ztest_shared_t *zs)
{
spa_t *spa;
mutex_init(&ztest_vdev_lock, NULL, MUTEX_DEFAULT, NULL);
mutex_init(&ztest_checkpoint_lock, NULL, MUTEX_DEFAULT, NULL);
VERIFY0(pthread_rwlock_init(&ztest_name_lock, NULL));
kernel_init(SPA_MODE_READ | SPA_MODE_WRITE);
ztest_import_impl();
VERIFY0(spa_open(ztest_opts.zo_pool, &spa, FTAG));
zs->zs_metaslab_sz =
1ULL << spa->spa_root_vdev->vdev_child[0]->vdev_ms_shift;
zs->zs_guid = spa_guid(spa);
spa_close(spa, FTAG);
kernel_fini();
if (!ztest_opts.zo_mmp_test) {
ztest_run_zdb(zs->zs_guid);
ztest_freeze();
ztest_run_zdb(zs->zs_guid);
}
(void) pthread_rwlock_destroy(&ztest_name_lock);
mutex_destroy(&ztest_vdev_lock);
mutex_destroy(&ztest_checkpoint_lock);
}
/*
* Kick off threads to run tests on all datasets in parallel.
*/
static void
ztest_run(ztest_shared_t *zs)
{
spa_t *spa;
objset_t *os;
kthread_t *resume_thread, *deadman_thread;
kthread_t **run_threads;
uint64_t object;
int error;
int t, d;
ztest_exiting = B_FALSE;
/*
* Initialize parent/child shared state.
*/
mutex_init(&ztest_vdev_lock, NULL, MUTEX_DEFAULT, NULL);
mutex_init(&ztest_checkpoint_lock, NULL, MUTEX_DEFAULT, NULL);
VERIFY0(pthread_rwlock_init(&ztest_name_lock, 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, MUTEX_DEFAULT, NULL);
list_create(&zcl.zcl_callbacks, sizeof (ztest_cb_data_t),
offsetof(ztest_cb_data_t, zcd_node));
/*
* Open our pool. It may need to be imported first depending on
* what tests were running when the previous pass was terminated.
*/
kernel_init(SPA_MODE_READ | SPA_MODE_WRITE);
error = spa_open(ztest_opts.zo_pool, &spa, FTAG);
if (error) {
VERIFY3S(error, ==, ENOENT);
ztest_import_impl();
VERIFY0(spa_open(ztest_opts.zo_pool, &spa, FTAG));
zs->zs_metaslab_sz =
1ULL << spa->spa_root_vdev->vdev_child[0]->vdev_ms_shift;
}
metaslab_preload_limit = ztest_random(20) + 1;
ztest_spa = spa;
VERIFY0(vdev_raidz_impl_set("cycle"));
dmu_objset_stats_t dds;
VERIFY0(ztest_dmu_objset_own(ztest_opts.zo_pool,
DMU_OST_ANY, B_TRUE, 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);
dmu_objset_disown(os, B_TRUE, FTAG);
/*
* Create a thread to periodically resume suspended I/O.
*/
resume_thread = thread_create(NULL, 0, ztest_resume_thread,
spa, 0, NULL, TS_RUN | TS_JOINABLE, defclsyspri);
/*
* Create a deadman thread and set to panic if we hang.
*/
deadman_thread = thread_create(NULL, 0, ztest_deadman_thread,
zs, 0, NULL, TS_RUN | TS_JOINABLE, defclsyspri);
spa->spa_deadman_failmode = ZIO_FAILURE_MODE_PANIC;
/*
* 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 (t = 0; t < 64; t++) {
for (d = -5; d <= 5; d++) {
error = dmu_object_info(spa->spa_meta_objset,
(1ULL << t) + d, NULL);
ASSERT(error == 0 || error == ENOENT ||
error == EINVAL);
}
}
/*
* 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;
/*
* If we were in the middle of ztest_device_removal() and were killed
* we need to ensure the removal and scrub complete before running
* any tests that check ztest_device_removal_active. The removal will
* be restarted automatically when the spa is opened, but we need to
* initiate the scrub manually if it is not already in progress. Note
* that we always run the scrub whenever an indirect vdev exists
* because we have no way of knowing for sure if ztest_device_removal()
* fully completed its scrub before the pool was reimported.
*/
if (spa->spa_removing_phys.sr_state == DSS_SCANNING ||
spa->spa_removing_phys.sr_prev_indirect_vdev != -1) {
while (spa->spa_removing_phys.sr_state == DSS_SCANNING)
txg_wait_synced(spa_get_dsl(spa), 0);
error = ztest_scrub_impl(spa);
if (error == EBUSY)
error = 0;
ASSERT0(error);
}
run_threads = umem_zalloc(ztest_opts.zo_threads * sizeof (kthread_t *),
UMEM_NOFAIL);
if (ztest_opts.zo_verbose >= 4)
(void) printf("starting main threads...\n");
/*
* Replay all logs of all datasets in the pool. This is primarily for
* temporary datasets which wouldn't otherwise get replayed, which
* can trigger failures when attempting to offline a SLOG in
* ztest_fault_inject().
*/
(void) dmu_objset_find(ztest_opts.zo_pool, ztest_replay_zil_cb,
NULL, DS_FIND_CHILDREN);
/*
* Kick off all the tests that run in parallel.
*/
for (t = 0; t < ztest_opts.zo_threads; t++) {
if (t < ztest_opts.zo_datasets && ztest_dataset_open(t) != 0) {
umem_free(run_threads, ztest_opts.zo_threads *
sizeof (kthread_t *));
return;
}
run_threads[t] = thread_create(NULL, 0, ztest_thread,
(void *)(uintptr_t)t, 0, NULL, TS_RUN | TS_JOINABLE,
defclsyspri);
}
/*
* Wait for all of the tests to complete.
*/
for (t = 0; t < ztest_opts.zo_threads; t++)
VERIFY0(thread_join(run_threads[t]));
/*
* Close all datasets. This must be done after all the threads
* are joined so we can be sure none of the datasets are in-use
* by any of the threads.
*/
for (t = 0; t < ztest_opts.zo_threads; t++) {
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));
umem_free(run_threads, ztest_opts.zo_threads * sizeof (kthread_t *));
/* Kill the resume and deadman threads */
ztest_exiting = B_TRUE;
VERIFY0(thread_join(resume_thread));
VERIFY0(thread_join(deadman_thread));
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 (object = 1; object < 50; object++) {
dmu_prefetch(spa->spa_meta_objset, object, 0, 0, 1ULL << 20,
ZIO_PRIORITY_SYNC_READ);
}
/* Verify that at least one commit cb was called in a timely fashion */
if (zc_cb_counter >= ZTEST_COMMIT_CB_MIN_REG)
VERIFY0(zc_min_txg_delay);
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);
(void) pthread_rwlock_destroy(&ztest_name_lock);
mutex_destroy(&ztest_vdev_lock);
mutex_destroy(&ztest_checkpoint_lock);
}
static 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(void)
{
nvlist_t *props;
props = fnvlist_alloc();
if (ztest_random(2) == 0)
return (props);
fnvlist_add_uint64(props,
zpool_prop_to_name(ZPOOL_PROP_AUTOREPLACE), 1);
return (props);
}
/*
* 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;
int i;
mutex_init(&ztest_vdev_lock, NULL, MUTEX_DEFAULT, NULL);
mutex_init(&ztest_checkpoint_lock, NULL, MUTEX_DEFAULT, NULL);
VERIFY0(pthread_rwlock_init(&ztest_name_lock, NULL));
kernel_init(SPA_MODE_READ | SPA_MODE_WRITE);
/*
* 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_raid_children, zs->zs_mirrors, 1);
props = make_random_props();
/*
* We don't expect the pool to suspend unless maxfaults == 0,
* in which case ztest_fault_inject() temporarily takes away
* the only valid replica.
*/
fnvlist_add_uint64(props,
zpool_prop_to_name(ZPOOL_PROP_FAILUREMODE),
MAXFAULTS(zs) ? ZIO_FAILURE_MODE_PANIC : ZIO_FAILURE_MODE_WAIT);
for (i = 0; i < SPA_FEATURES; i++) {
char *buf;
if (!spa_feature_table[i].fi_zfs_mod_supported)
continue;
/*
* 75% chance of using the log space map feature. We want ztest
* to exercise both the code paths that use the log space map
* feature and the ones that don't.
*/
if (i == SPA_FEATURE_LOG_SPACEMAP && ztest_random(4) == 0)
continue;
VERIFY3S(-1, !=, asprintf(&buf, "feature@%s",
spa_feature_table[i].fi_uname));
fnvlist_add_uint64(props, buf, 0);
free(buf);
}
VERIFY0(spa_create(ztest_opts.zo_pool, nvroot, props, NULL, NULL));
fnvlist_free(nvroot);
fnvlist_free(props);
VERIFY0(spa_open(ztest_opts.zo_pool, &spa, FTAG));
zs->zs_metaslab_sz =
1ULL << spa->spa_root_vdev->vdev_child[0]->vdev_ms_shift;
zs->zs_guid = spa_guid(spa);
spa_close(spa, FTAG);
kernel_fini();
if (!ztest_opts.zo_mmp_test) {
ztest_run_zdb(zs->zs_guid);
ztest_freeze();
ztest_run_zdb(zs->zs_guid);
}
(void) pthread_rwlock_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);
ASSERT3P(hdr, !=, MAP_FAILED);
VERIFY0(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);
VERIFY0(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);
ASSERT3P(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);
ASSERT3P(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(B_TRUE, "fork failed");
if (pid == 0) { /* child */
char fd_data_str[12];
VERIFY3S(11, >=,
snprintf(fd_data_str, 12, "%d", ztest_fd_data));
VERIFY0(setenv("ZTEST_FD_DATA", fd_data_str, 1));
if (libpath != NULL) {
const char *curlp = getenv("LD_LIBRARY_PATH");
if (curlp == NULL)
VERIFY0(setenv("LD_LIBRARY_PATH", libpath, 1));
else {
char *newlp = NULL;
VERIFY3S(-1, !=,
asprintf(&newlp, "%s:%s", libpath, curlp));
VERIFY0(setenv("LD_LIBRARY_PATH", newlp, 1));
free(newlp);
}
}
(void) execl(cmd, cmd, (char *)NULL);
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);
}
}
static void
ztest_run_init(void)
{
int i;
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 (i = 1; i <= ztest_opts.zo_init; i++) {
memset(zs, 0, sizeof (*zs));
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;
int f, err;
char *fd_data_str = getenv("ZTEST_FD_DATA");
struct sigaction action;
(void) setvbuf(stdout, NULL, _IOLBF, 0);
dprintf_setup(&argc, argv);
zfs_deadman_synctime_ms = 300000;
zfs_deadman_checktime_ms = 30000;
/*
* 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.
*
* Note: the lower this value is, the more damage we inflict, and
* the more time ztest spends in recovering that damage. We chose
* to induce damage 1/100th of the time so recovery is tested but
* not so frequently that ztest doesn't get to test other code paths.
*/
zfs_reconstruct_indirect_damage_fraction = 100;
action.sa_handler = sig_handler;
sigemptyset(&action.sa_mask);
action.sa_flags = 0;
if (sigaction(SIGSEGV, &action, NULL) < 0) {
(void) fprintf(stderr, "ztest: cannot catch SIGSEGV: %s.\n",
strerror(errno));
exit(EXIT_FAILURE);
}
if (sigaction(SIGABRT, &action, NULL) < 0) {
(void) fprintf(stderr, "ztest: cannot catch SIGABRT: %s.\n",
strerror(errno));
exit(EXIT_FAILURE);
}
/*
* Force random_get_bytes() to use /dev/urandom in order to prevent
* ztest from needlessly depleting the system entropy pool.
*/
random_path = "/dev/urandom";
ztest_fd_rand = open(random_path, O_RDONLY | O_CLOEXEC);
ASSERT3S(ztest_fd_rand, >=, 0);
if (!fd_data_str) {
process_options(argc, argv);
setup_data_fd();
setup_hdr();
setup_data();
memcpy(ztest_shared_opts, &ztest_opts,
sizeof (*ztest_shared_opts));
} else {
ztest_fd_data = atoi(fd_data_str);
setup_data();
memcpy(&ztest_opts, ztest_shared_opts, sizeof (ztest_opts));
}
ASSERT3U(ztest_opts.zo_datasets, ==, ztest_shared_hdr->zh_ds_count);
err = ztest_set_global_vars();
if (err != 0 && !fd_data_str) {
/* error message done by ztest_set_global_vars */
exit(EXIT_FAILURE);
} else {
/* children should not be spawned if setting gvars fails */
VERIFY3S(err, ==, 0);
}
/* Override location of zpool.cache */
VERIFY3S(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("%"PRIu64" vdevs, %d datasets, %d threads,"
"%d %s disks, %"PRIu64" seconds...\n\n",
ztest_opts.zo_vdevs,
ztest_opts.zo_datasets,
ztest_opts.zo_threads,
ztest_opts.zo_raid_children,
ztest_opts.zo_raid_type,
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 (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 (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, %3"PRIu64" ENOSPC, "
"%4.1f%% of %5s used, %3.0f%% done, %8s to go\n",
iters,
WIFEXITED(status) ? "Complete" : "SIGKILL",
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 (f = 0; f < ZTEST_FUNCS; f++) {
zi = &ztest_info[f];
zc = ZTEST_GET_SHARED_CALLSTATE(f);
print_time(zc->zc_time, timebuf);
(void) printf("%7"PRIu64" %9s %s\n",
zc->zc_count, timebuf,
zi->zi_funcname);
}
(void) printf("\n");
}
if (!ztest_opts.zo_mmp_test)
ztest_run_zdb(zs->zs_guid);
}
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);
}
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