ztest.c revision 252764
1214501Srpaulo/* 2214501Srpaulo * CDDL HEADER START 3214501Srpaulo * 4214501Srpaulo * The contents of this file are subject to the terms of the 5252726Srpaulo * Common Development and Distribution License (the "License"). 6252726Srpaulo * You may not use this file except in compliance with the License. 7214501Srpaulo * 8214501Srpaulo * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9214501Srpaulo * or http://www.opensolaris.org/os/licensing. 10214501Srpaulo * See the License for the specific language governing permissions 11214501Srpaulo * and limitations under the License. 12252726Srpaulo * 13214501Srpaulo * When distributing Covered Code, include this CDDL HEADER in each 14214501Srpaulo * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15214501Srpaulo * If applicable, add the following below this CDDL HEADER, with the 16214501Srpaulo * fields enclosed by brackets "[]" replaced with your own identifying 17214501Srpaulo * information: Portions Copyright [yyyy] [name of copyright owner] 18214501Srpaulo * 19214501Srpaulo * CDDL HEADER END 20214501Srpaulo */ 21214501Srpaulo/* 22214501Srpaulo * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved. 23214501Srpaulo * Copyright (c) 2012 by Delphix. All rights reserved. 24214501Srpaulo * Copyright 2011 Nexenta Systems, Inc. All rights reserved. 25214501Srpaulo * Copyright (c) 2012 Martin Matuska <mm@FreeBSD.org>. All rights reserved. 26214501Srpaulo * Copyright (c) 2013 Steven Hartland. All rights reserved. 27214501Srpaulo */ 28214501Srpaulo 29214501Srpaulo/* 30214501Srpaulo * The objective of this program is to provide a DMU/ZAP/SPA stress test 31214501Srpaulo * that runs entirely in userland, is easy to use, and easy to extend. 32214501Srpaulo * 33214501Srpaulo * The overall design of the ztest program is as follows: 34214501Srpaulo * 35214501Srpaulo * (1) For each major functional area (e.g. adding vdevs to a pool, 36214501Srpaulo * creating and destroying datasets, reading and writing objects, etc) 37214501Srpaulo * we have a simple routine to test that functionality. These 38214501Srpaulo * individual routines do not have to do anything "stressful". 39214501Srpaulo * 40214501Srpaulo * (2) We turn these simple functionality tests into a stress test by 41214501Srpaulo * running them all in parallel, with as many threads as desired, 42214501Srpaulo * and spread across as many datasets, objects, and vdevs as desired. 43214501Srpaulo * 44214501Srpaulo * (3) While all this is happening, we inject faults into the pool to 45214501Srpaulo * verify that self-healing data really works. 46214501Srpaulo * 47214501Srpaulo * (4) Every time we open a dataset, we change its checksum and compression 48214501Srpaulo * functions. Thus even individual objects vary from block to block 49214501Srpaulo * in which checksum they use and whether they're compressed. 50214501Srpaulo * 51214501Srpaulo * (5) To verify that we never lose on-disk consistency after a crash, 52214501Srpaulo * we run the entire test in a child of the main process. 53214501Srpaulo * At random times, the child self-immolates with a SIGKILL. 54214501Srpaulo * This is the software equivalent of pulling the power cord. 55214501Srpaulo * The parent then runs the test again, using the existing 56214501Srpaulo * storage pool, as many times as desired. If backwards compatability 57214501Srpaulo * testing is enabled ztest will sometimes run the "older" version 58214501Srpaulo * of ztest after a SIGKILL. 59214501Srpaulo * 60214501Srpaulo * (6) To verify that we don't have future leaks or temporal incursions, 61214501Srpaulo * many of the functional tests record the transaction group number 62214501Srpaulo * as part of their data. When reading old data, they verify that 63214501Srpaulo * the transaction group number is less than the current, open txg. 64214501Srpaulo * If you add a new test, please do this if applicable. 65214501Srpaulo * 66214501Srpaulo * When run with no arguments, ztest runs for about five minutes and 67214501Srpaulo * produces no output if successful. To get a little bit of information, 68214501Srpaulo * specify -V. To get more information, specify -VV, and so on. 69214501Srpaulo * 70214501Srpaulo * To turn this into an overnight stress test, use -T to specify run time. 71214501Srpaulo * 72214501Srpaulo * You can ask more more vdevs [-v], datasets [-d], or threads [-t] 73214501Srpaulo * to increase the pool capacity, fanout, and overall stress level. 74214501Srpaulo * 75214501Srpaulo * Use the -k option to set the desired frequency of kills. 76214501Srpaulo * 77214501Srpaulo * When ztest invokes itself it passes all relevant information through a 78214501Srpaulo * temporary file which is mmap-ed in the child process. This allows shared 79214501Srpaulo * memory to survive the exec syscall. The ztest_shared_hdr_t struct is always 80214501Srpaulo * stored at offset 0 of this file and contains information on the size and 81214501Srpaulo * number of shared structures in the file. The information stored in this file 82214501Srpaulo * must remain backwards compatible with older versions of ztest so that 83214501Srpaulo * ztest can invoke them during backwards compatibility testing (-B). 84214501Srpaulo */ 85214501Srpaulo 86214501Srpaulo#include <sys/zfs_context.h> 87214501Srpaulo#include <sys/spa.h> 88214501Srpaulo#include <sys/dmu.h> 89214501Srpaulo#include <sys/txg.h> 90214501Srpaulo#include <sys/dbuf.h> 91214501Srpaulo#include <sys/zap.h> 92214501Srpaulo#include <sys/dmu_objset.h> 93214501Srpaulo#include <sys/poll.h> 94214501Srpaulo#include <sys/stat.h> 95214501Srpaulo#include <sys/time.h> 96214501Srpaulo#include <sys/wait.h> 97214501Srpaulo#include <sys/mman.h> 98214501Srpaulo#include <sys/resource.h> 99214501Srpaulo#include <sys/zio.h> 100214501Srpaulo#include <sys/zil.h> 101214501Srpaulo#include <sys/zil_impl.h> 102214501Srpaulo#include <sys/vdev_impl.h> 103214501Srpaulo#include <sys/vdev_file.h> 104214501Srpaulo#include <sys/spa_impl.h> 105214501Srpaulo#include <sys/metaslab_impl.h> 106214501Srpaulo#include <sys/dsl_prop.h> 107214501Srpaulo#include <sys/dsl_dataset.h> 108214501Srpaulo#include <sys/dsl_destroy.h> 109214501Srpaulo#include <sys/dsl_scan.h> 110214501Srpaulo#include <sys/zio_checksum.h> 111214501Srpaulo#include <sys/refcount.h> 112214501Srpaulo#include <sys/zfeature.h> 113214501Srpaulo#include <sys/dsl_userhold.h> 114214501Srpaulo#include <stdio.h> 115214501Srpaulo#include <stdio_ext.h> 116214501Srpaulo#include <stdlib.h> 117214501Srpaulo#include <unistd.h> 118252726Srpaulo#include <signal.h> 119214501Srpaulo#include <umem.h> 120214501Srpaulo#include <dlfcn.h> 121214501Srpaulo#include <ctype.h> 122214501Srpaulo#include <math.h> 123214501Srpaulo#include <errno.h> 124214501Srpaulo#include <sys/fs/zfs.h> 125214501Srpaulo#include <libnvpair.h> 126214501Srpaulo 127214501Srpaulostatic int ztest_fd_data = -1; 128214501Srpaulostatic int ztest_fd_rand = -1; 129214501Srpaulo 130214501Srpaulotypedef struct ztest_shared_hdr { 131214501Srpaulo uint64_t zh_hdr_size; 132214501Srpaulo uint64_t zh_opts_size; 133214501Srpaulo uint64_t zh_size; 134214501Srpaulo uint64_t zh_stats_size; 135214501Srpaulo uint64_t zh_stats_count; 136214501Srpaulo uint64_t zh_ds_size; 137214501Srpaulo uint64_t zh_ds_count; 138214501Srpaulo} ztest_shared_hdr_t; 139214501Srpaulo 140214501Srpaulostatic ztest_shared_hdr_t *ztest_shared_hdr; 141214501Srpaulo 142214501Srpaulotypedef struct ztest_shared_opts { 143214501Srpaulo char zo_pool[MAXNAMELEN]; 144214501Srpaulo char zo_dir[MAXNAMELEN]; 145214501Srpaulo char zo_alt_ztest[MAXNAMELEN]; 146214501Srpaulo char zo_alt_libpath[MAXNAMELEN]; 147214501Srpaulo uint64_t zo_vdevs; 148214501Srpaulo uint64_t zo_vdevtime; 149214501Srpaulo size_t zo_vdev_size; 150214501Srpaulo int zo_ashift; 151214501Srpaulo int zo_mirrors; 152214501Srpaulo int zo_raidz; 153214501Srpaulo int zo_raidz_parity; 154214501Srpaulo int zo_datasets; 155214501Srpaulo int zo_threads; 156214501Srpaulo uint64_t zo_passtime; 157214501Srpaulo uint64_t zo_killrate; 158214501Srpaulo int zo_verbose; 159214501Srpaulo int zo_init; 160214501Srpaulo uint64_t zo_time; 161214501Srpaulo uint64_t zo_maxloops; 162214501Srpaulo uint64_t zo_metaslab_gang_bang; 163214501Srpaulo} ztest_shared_opts_t; 164214501Srpaulo 165214501Srpaulostatic const ztest_shared_opts_t ztest_opts_defaults = { 166214501Srpaulo .zo_pool = { 'z', 't', 'e', 's', 't', '\0' }, 167214501Srpaulo .zo_dir = { '/', 't', 'm', 'p', '\0' }, 168214501Srpaulo .zo_alt_ztest = { '\0' }, 169214501Srpaulo .zo_alt_libpath = { '\0' }, 170214501Srpaulo .zo_vdevs = 5, 171214501Srpaulo .zo_ashift = SPA_MINBLOCKSHIFT, 172214501Srpaulo .zo_mirrors = 2, 173214501Srpaulo .zo_raidz = 4, 174214501Srpaulo .zo_raidz_parity = 1, 175214501Srpaulo .zo_vdev_size = SPA_MINDEVSIZE, 176214501Srpaulo .zo_datasets = 7, 177214501Srpaulo .zo_threads = 23, 178214501Srpaulo .zo_passtime = 60, /* 60 seconds */ 179214501Srpaulo .zo_killrate = 70, /* 70% kill rate */ 180214501Srpaulo .zo_verbose = 0, 181214501Srpaulo .zo_init = 1, 182214501Srpaulo .zo_time = 300, /* 5 minutes */ 183214501Srpaulo .zo_maxloops = 50, /* max loops during spa_freeze() */ 184214501Srpaulo .zo_metaslab_gang_bang = 32 << 10 185214501Srpaulo}; 186214501Srpaulo 187214501Srpauloextern uint64_t metaslab_gang_bang; 188214501Srpauloextern uint64_t metaslab_df_alloc_threshold; 189214501Srpaulo 190214501Srpaulostatic ztest_shared_opts_t *ztest_shared_opts; 191214501Srpaulostatic ztest_shared_opts_t ztest_opts; 192214501Srpaulo 193214501Srpaulotypedef struct ztest_shared_ds { 194214501Srpaulo uint64_t zd_seq; 195214501Srpaulo} ztest_shared_ds_t; 196214501Srpaulo 197214501Srpaulostatic ztest_shared_ds_t *ztest_shared_ds; 198214501Srpaulo#define ZTEST_GET_SHARED_DS(d) (&ztest_shared_ds[d]) 199214501Srpaulo 200214501Srpaulo#define BT_MAGIC 0x123456789abcdefULL 201214501Srpaulo#define MAXFAULTS() \ 202214501Srpaulo (MAX(zs->zs_mirrors, 1) * (ztest_opts.zo_raidz_parity + 1) - 1) 203214501Srpaulo 204214501Srpauloenum ztest_io_type { 205214501Srpaulo ZTEST_IO_WRITE_TAG, 206214501Srpaulo ZTEST_IO_WRITE_PATTERN, 207214501Srpaulo ZTEST_IO_WRITE_ZEROES, 208214501Srpaulo ZTEST_IO_TRUNCATE, 209214501Srpaulo ZTEST_IO_SETATTR, 210214501Srpaulo ZTEST_IO_REWRITE, 211214501Srpaulo ZTEST_IO_TYPES 212214501Srpaulo}; 213214501Srpaulo 214214501Srpaulotypedef struct ztest_block_tag { 215214501Srpaulo uint64_t bt_magic; 216214501Srpaulo uint64_t bt_objset; 217214501Srpaulo uint64_t bt_object; 218214501Srpaulo uint64_t bt_offset; 219214501Srpaulo uint64_t bt_gen; 220214501Srpaulo uint64_t bt_txg; 221214501Srpaulo uint64_t bt_crtxg; 222214501Srpaulo} ztest_block_tag_t; 223214501Srpaulo 224214501Srpaulotypedef struct bufwad { 225214501Srpaulo uint64_t bw_index; 226214501Srpaulo uint64_t bw_txg; 227214501Srpaulo uint64_t bw_data; 228214501Srpaulo} bufwad_t; 229214501Srpaulo 230214501Srpaulo/* 231214501Srpaulo * XXX -- fix zfs range locks to be generic so we can use them here. 232214501Srpaulo */ 233214501Srpaulotypedef enum { 234214501Srpaulo RL_READER, 235214501Srpaulo RL_WRITER, 236214501Srpaulo RL_APPEND 237214501Srpaulo} rl_type_t; 238214501Srpaulo 239214501Srpaulotypedef struct rll { 240214501Srpaulo void *rll_writer; 241214501Srpaulo int rll_readers; 242214501Srpaulo mutex_t rll_lock; 243214501Srpaulo cond_t rll_cv; 244214501Srpaulo} rll_t; 245214501Srpaulo 246214501Srpaulotypedef struct rl { 247214501Srpaulo uint64_t rl_object; 248214501Srpaulo uint64_t rl_offset; 249214501Srpaulo uint64_t rl_size; 250214501Srpaulo rll_t *rl_lock; 251214501Srpaulo} rl_t; 252214501Srpaulo 253214501Srpaulo#define ZTEST_RANGE_LOCKS 64 254214501Srpaulo#define ZTEST_OBJECT_LOCKS 64 255214501Srpaulo 256214501Srpaulo/* 257214501Srpaulo * Object descriptor. Used as a template for object lookup/create/remove. 258214501Srpaulo */ 259214501Srpaulotypedef struct ztest_od { 260214501Srpaulo uint64_t od_dir; 261214501Srpaulo uint64_t od_object; 262214501Srpaulo dmu_object_type_t od_type; 263214501Srpaulo dmu_object_type_t od_crtype; 264214501Srpaulo uint64_t od_blocksize; 265214501Srpaulo uint64_t od_crblocksize; 266214501Srpaulo uint64_t od_gen; 267214501Srpaulo uint64_t od_crgen; 268214501Srpaulo char od_name[MAXNAMELEN]; 269214501Srpaulo} ztest_od_t; 270214501Srpaulo 271214501Srpaulo/* 272214501Srpaulo * Per-dataset state. 273214501Srpaulo */ 274214501Srpaulotypedef struct ztest_ds { 275214501Srpaulo ztest_shared_ds_t *zd_shared; 276214501Srpaulo objset_t *zd_os; 277214501Srpaulo rwlock_t zd_zilog_lock; 278214501Srpaulo zilog_t *zd_zilog; 279214501Srpaulo ztest_od_t *zd_od; /* debugging aid */ 280214501Srpaulo char zd_name[MAXNAMELEN]; 281214501Srpaulo mutex_t zd_dirobj_lock; 282214501Srpaulo rll_t zd_object_lock[ZTEST_OBJECT_LOCKS]; 283214501Srpaulo rll_t zd_range_lock[ZTEST_RANGE_LOCKS]; 284214501Srpaulo} ztest_ds_t; 285214501Srpaulo 286214501Srpaulo/* 287214501Srpaulo * Per-iteration state. 288214501Srpaulo */ 289214501Srpaulotypedef void ztest_func_t(ztest_ds_t *zd, uint64_t id); 290214501Srpaulo 291214501Srpaulotypedef struct ztest_info { 292214501Srpaulo ztest_func_t *zi_func; /* test function */ 293214501Srpaulo uint64_t zi_iters; /* iterations per execution */ 294214501Srpaulo uint64_t *zi_interval; /* execute every <interval> seconds */ 295214501Srpaulo} ztest_info_t; 296214501Srpaulo 297214501Srpaulotypedef struct ztest_shared_callstate { 298214501Srpaulo uint64_t zc_count; /* per-pass count */ 299214501Srpaulo uint64_t zc_time; /* per-pass time */ 300214501Srpaulo uint64_t zc_next; /* next time to call this function */ 301214501Srpaulo} ztest_shared_callstate_t; 302214501Srpaulo 303214501Srpaulostatic ztest_shared_callstate_t *ztest_shared_callstate; 304214501Srpaulo#define ZTEST_GET_SHARED_CALLSTATE(c) (&ztest_shared_callstate[c]) 305214501Srpaulo 306214501Srpaulo/* 307214501Srpaulo * Note: these aren't static because we want dladdr() to work. 308214501Srpaulo */ 309214501Srpauloztest_func_t ztest_dmu_read_write; 310214501Srpauloztest_func_t ztest_dmu_write_parallel; 311214501Srpauloztest_func_t ztest_dmu_object_alloc_free; 312214501Srpauloztest_func_t ztest_dmu_commit_callbacks; 313214501Srpauloztest_func_t ztest_zap; 314214501Srpauloztest_func_t ztest_zap_parallel; 315214501Srpauloztest_func_t ztest_zil_commit; 316214501Srpauloztest_func_t ztest_zil_remount; 317214501Srpauloztest_func_t ztest_dmu_read_write_zcopy; 318214501Srpauloztest_func_t ztest_dmu_objset_create_destroy; 319214501Srpauloztest_func_t ztest_dmu_prealloc; 320214501Srpauloztest_func_t ztest_fzap; 321214501Srpauloztest_func_t ztest_dmu_snapshot_create_destroy; 322214501Srpauloztest_func_t ztest_dsl_prop_get_set; 323214501Srpauloztest_func_t ztest_spa_prop_get_set; 324214501Srpauloztest_func_t ztest_spa_create_destroy; 325214501Srpauloztest_func_t ztest_fault_inject; 326214501Srpauloztest_func_t ztest_ddt_repair; 327214501Srpauloztest_func_t ztest_dmu_snapshot_hold; 328214501Srpauloztest_func_t ztest_spa_rename; 329214501Srpauloztest_func_t ztest_scrub; 330214501Srpauloztest_func_t ztest_dsl_dataset_promote_busy; 331214501Srpauloztest_func_t ztest_vdev_attach_detach; 332214501Srpauloztest_func_t ztest_vdev_LUN_growth; 333214501Srpauloztest_func_t ztest_vdev_add_remove; 334214501Srpauloztest_func_t ztest_vdev_aux_add_remove; 335214501Srpauloztest_func_t ztest_split_pool; 336214501Srpauloztest_func_t ztest_reguid; 337214501Srpauloztest_func_t ztest_spa_upgrade; 338214501Srpaulo 339214501Srpaulouint64_t zopt_always = 0ULL * NANOSEC; /* all the time */ 340214501Srpaulouint64_t zopt_incessant = 1ULL * NANOSEC / 10; /* every 1/10 second */ 341214501Srpaulouint64_t zopt_often = 1ULL * NANOSEC; /* every second */ 342214501Srpaulouint64_t zopt_sometimes = 10ULL * NANOSEC; /* every 10 seconds */ 343214501Srpaulouint64_t zopt_rarely = 60ULL * NANOSEC; /* every 60 seconds */ 344214501Srpaulo 345214501Srpauloztest_info_t ztest_info[] = { 346214501Srpaulo { ztest_dmu_read_write, 1, &zopt_always }, 347214501Srpaulo { ztest_dmu_write_parallel, 10, &zopt_always }, 348214501Srpaulo { ztest_dmu_object_alloc_free, 1, &zopt_always }, 349214501Srpaulo { ztest_dmu_commit_callbacks, 1, &zopt_always }, 350214501Srpaulo { ztest_zap, 30, &zopt_always }, 351214501Srpaulo { ztest_zap_parallel, 100, &zopt_always }, 352214501Srpaulo { ztest_split_pool, 1, &zopt_always }, 353214501Srpaulo { ztest_zil_commit, 1, &zopt_incessant }, 354214501Srpaulo { ztest_zil_remount, 1, &zopt_sometimes }, 355214501Srpaulo { ztest_dmu_read_write_zcopy, 1, &zopt_often }, 356214501Srpaulo { ztest_dmu_objset_create_destroy, 1, &zopt_often }, 357214501Srpaulo { ztest_dsl_prop_get_set, 1, &zopt_often }, 358214501Srpaulo { ztest_spa_prop_get_set, 1, &zopt_sometimes }, 359214501Srpaulo#if 0 360214501Srpaulo { ztest_dmu_prealloc, 1, &zopt_sometimes }, 361214501Srpaulo#endif 362214501Srpaulo { ztest_fzap, 1, &zopt_sometimes }, 363214501Srpaulo { ztest_dmu_snapshot_create_destroy, 1, &zopt_sometimes }, 364214501Srpaulo { ztest_spa_create_destroy, 1, &zopt_sometimes }, 365214501Srpaulo { ztest_fault_inject, 1, &zopt_sometimes }, 366214501Srpaulo { ztest_ddt_repair, 1, &zopt_sometimes }, 367214501Srpaulo { ztest_dmu_snapshot_hold, 1, &zopt_sometimes }, 368214501Srpaulo { ztest_reguid, 1, &zopt_sometimes }, 369214501Srpaulo { ztest_spa_rename, 1, &zopt_rarely }, 370214501Srpaulo { ztest_scrub, 1, &zopt_rarely }, 371214501Srpaulo { ztest_spa_upgrade, 1, &zopt_rarely }, 372214501Srpaulo { ztest_dsl_dataset_promote_busy, 1, &zopt_rarely }, 373214501Srpaulo { ztest_vdev_attach_detach, 1, &zopt_sometimes }, 374214501Srpaulo { ztest_vdev_LUN_growth, 1, &zopt_rarely }, 375214501Srpaulo { ztest_vdev_add_remove, 1, 376214501Srpaulo &ztest_opts.zo_vdevtime }, 377214501Srpaulo { ztest_vdev_aux_add_remove, 1, 378214501Srpaulo &ztest_opts.zo_vdevtime }, 379214501Srpaulo}; 380214501Srpaulo 381214501Srpaulo#define ZTEST_FUNCS (sizeof (ztest_info) / sizeof (ztest_info_t)) 382214501Srpaulo 383214501Srpaulo/* 384214501Srpaulo * The following struct is used to hold a list of uncalled commit callbacks. 385214501Srpaulo * The callbacks are ordered by txg number. 386214501Srpaulo */ 387214501Srpaulotypedef struct ztest_cb_list { 388214501Srpaulo mutex_t zcl_callbacks_lock; 389214501Srpaulo list_t zcl_callbacks; 390214501Srpaulo} ztest_cb_list_t; 391214501Srpaulo 392214501Srpaulo/* 393214501Srpaulo * Stuff we need to share writably between parent and child. 394214501Srpaulo */ 395214501Srpaulotypedef struct ztest_shared { 396214501Srpaulo boolean_t zs_do_init; 397214501Srpaulo hrtime_t zs_proc_start; 398214501Srpaulo hrtime_t zs_proc_stop; 399214501Srpaulo hrtime_t zs_thread_start; 400214501Srpaulo hrtime_t zs_thread_stop; 401214501Srpaulo hrtime_t zs_thread_kill; 402214501Srpaulo uint64_t zs_enospc_count; 403214501Srpaulo uint64_t zs_vdev_next_leaf; 404214501Srpaulo uint64_t zs_vdev_aux; 405214501Srpaulo uint64_t zs_alloc; 406214501Srpaulo uint64_t zs_space; 407214501Srpaulo uint64_t zs_splits; 408214501Srpaulo uint64_t zs_mirrors; 409214501Srpaulo uint64_t zs_metaslab_sz; 410214501Srpaulo uint64_t zs_metaslab_df_alloc_threshold; 411214501Srpaulo uint64_t zs_guid; 412214501Srpaulo} ztest_shared_t; 413214501Srpaulo 414214501Srpaulo#define ID_PARALLEL -1ULL 415214501Srpaulo 416214501Srpaulostatic char ztest_dev_template[] = "%s/%s.%llua"; 417214501Srpaulostatic char ztest_aux_template[] = "%s/%s.%s.%llu"; 418214501Srpauloztest_shared_t *ztest_shared; 419214501Srpaulo 420214501Srpaulostatic spa_t *ztest_spa = NULL; 421214501Srpaulostatic ztest_ds_t *ztest_ds; 422214501Srpaulo 423214501Srpaulostatic mutex_t ztest_vdev_lock; 424214501Srpaulo 425214501Srpaulo/* 426214501Srpaulo * The ztest_name_lock protects the pool and dataset namespace used by 427214501Srpaulo * the individual tests. To modify the namespace, consumers must grab 428214501Srpaulo * this lock as writer. Grabbing the lock as reader will ensure that the 429214501Srpaulo * namespace does not change while the lock is held. 430214501Srpaulo */ 431214501Srpaulostatic rwlock_t ztest_name_lock; 432214501Srpaulo 433214501Srpaulostatic boolean_t ztest_dump_core = B_TRUE; 434214501Srpaulostatic boolean_t ztest_exiting; 435214501Srpaulo 436214501Srpaulo/* Global commit callback list */ 437214501Srpaulostatic ztest_cb_list_t zcl; 438214501Srpaulo 439214501Srpauloenum ztest_object { 440214501Srpaulo ZTEST_META_DNODE = 0, 441214501Srpaulo ZTEST_DIROBJ, 442214501Srpaulo ZTEST_OBJECTS 443214501Srpaulo}; 444214501Srpaulo 445214501Srpaulostatic void usage(boolean_t) __NORETURN; 446214501Srpaulo 447214501Srpaulo/* 448214501Srpaulo * These libumem hooks provide a reasonable set of defaults for the allocator's 449214501Srpaulo * debugging facilities. 450214501Srpaulo */ 451214501Srpauloconst char * 452214501Srpaulo_umem_debug_init() 453214501Srpaulo{ 454214501Srpaulo return ("default,verbose"); /* $UMEM_DEBUG setting */ 455214501Srpaulo} 456214501Srpaulo 457214501Srpauloconst char * 458214501Srpaulo_umem_logging_init(void) 459214501Srpaulo{ 460214501Srpaulo return ("fail,contents"); /* $UMEM_LOGGING setting */ 461214501Srpaulo} 462214501Srpaulo 463214501Srpaulo#define FATAL_MSG_SZ 1024 464214501Srpaulo 465214501Srpaulochar *fatal_msg; 466214501Srpaulo 467214501Srpaulostatic void 468214501Srpaulofatal(int do_perror, char *message, ...) 469214501Srpaulo{ 470214501Srpaulo va_list args; 471214501Srpaulo int save_errno = errno; 472214501Srpaulo char buf[FATAL_MSG_SZ]; 473214501Srpaulo 474214501Srpaulo (void) fflush(stdout); 475214501Srpaulo 476214501Srpaulo va_start(args, message); 477214501Srpaulo (void) sprintf(buf, "ztest: "); 478214501Srpaulo /* LINTED */ 479214501Srpaulo (void) vsprintf(buf + strlen(buf), message, args); 480214501Srpaulo va_end(args); 481214501Srpaulo if (do_perror) { 482214501Srpaulo (void) snprintf(buf + strlen(buf), FATAL_MSG_SZ - strlen(buf), 483214501Srpaulo ": %s", strerror(save_errno)); 484214501Srpaulo } 485214501Srpaulo (void) fprintf(stderr, "%s\n", buf); 486214501Srpaulo fatal_msg = buf; /* to ease debugging */ 487214501Srpaulo if (ztest_dump_core) 488214501Srpaulo abort(); 489214501Srpaulo exit(3); 490214501Srpaulo} 491214501Srpaulo 492214501Srpaulostatic int 493214501Srpaulostr2shift(const char *buf) 494214501Srpaulo{ 495214501Srpaulo const char *ends = "BKMGTPEZ"; 496214501Srpaulo int i; 497214501Srpaulo 498214501Srpaulo if (buf[0] == '\0') 499214501Srpaulo return (0); 500214501Srpaulo for (i = 0; i < strlen(ends); i++) { 501214501Srpaulo if (toupper(buf[0]) == ends[i]) 502214501Srpaulo break; 503214501Srpaulo } 504214501Srpaulo if (i == strlen(ends)) { 505214501Srpaulo (void) fprintf(stderr, "ztest: invalid bytes suffix: %s\n", 506214501Srpaulo buf); 507214501Srpaulo usage(B_FALSE); 508214501Srpaulo } 509214501Srpaulo if (buf[1] == '\0' || (toupper(buf[1]) == 'B' && buf[2] == '\0')) { 510214501Srpaulo return (10*i); 511214501Srpaulo } 512214501Srpaulo (void) fprintf(stderr, "ztest: invalid bytes suffix: %s\n", buf); 513214501Srpaulo usage(B_FALSE); 514214501Srpaulo /* NOTREACHED */ 515214501Srpaulo} 516214501Srpaulo 517214501Srpaulostatic uint64_t 518214501Srpaulonicenumtoull(const char *buf) 519214501Srpaulo{ 520214501Srpaulo char *end; 521214501Srpaulo uint64_t val; 522214501Srpaulo 523214501Srpaulo val = strtoull(buf, &end, 0); 524214501Srpaulo if (end == buf) { 525214501Srpaulo (void) fprintf(stderr, "ztest: bad numeric value: %s\n", buf); 526214501Srpaulo usage(B_FALSE); 527214501Srpaulo } else if (end[0] == '.') { 528214501Srpaulo double fval = strtod(buf, &end); 529214501Srpaulo fval *= pow(2, str2shift(end)); 530214501Srpaulo if (fval > UINT64_MAX) { 531214501Srpaulo (void) fprintf(stderr, "ztest: value too large: %s\n", 532214501Srpaulo buf); 533214501Srpaulo usage(B_FALSE); 534214501Srpaulo } 535214501Srpaulo val = (uint64_t)fval; 536214501Srpaulo } else { 537214501Srpaulo int shift = str2shift(end); 538214501Srpaulo if (shift >= 64 || (val << shift) >> shift != val) { 539214501Srpaulo (void) fprintf(stderr, "ztest: value too large: %s\n", 540214501Srpaulo buf); 541214501Srpaulo usage(B_FALSE); 542214501Srpaulo } 543214501Srpaulo val <<= shift; 544214501Srpaulo } 545214501Srpaulo return (val); 546214501Srpaulo} 547214501Srpaulo 548214501Srpaulostatic void 549214501Srpaulousage(boolean_t requested) 550214501Srpaulo{ 551214501Srpaulo const ztest_shared_opts_t *zo = &ztest_opts_defaults; 552214501Srpaulo 553214501Srpaulo char nice_vdev_size[10]; 554214501Srpaulo char nice_gang_bang[10]; 555214501Srpaulo FILE *fp = requested ? stdout : stderr; 556214501Srpaulo 557214501Srpaulo nicenum(zo->zo_vdev_size, nice_vdev_size); 558214501Srpaulo nicenum(zo->zo_metaslab_gang_bang, nice_gang_bang); 559214501Srpaulo 560214501Srpaulo (void) fprintf(fp, "Usage: %s\n" 561214501Srpaulo "\t[-v vdevs (default: %llu)]\n" 562214501Srpaulo "\t[-s size_of_each_vdev (default: %s)]\n" 563214501Srpaulo "\t[-a alignment_shift (default: %d)] use 0 for random\n" 564214501Srpaulo "\t[-m mirror_copies (default: %d)]\n" 565214501Srpaulo "\t[-r raidz_disks (default: %d)]\n" 566214501Srpaulo "\t[-R raidz_parity (default: %d)]\n" 567214501Srpaulo "\t[-d datasets (default: %d)]\n" 568214501Srpaulo "\t[-t threads (default: %d)]\n" 569214501Srpaulo "\t[-g gang_block_threshold (default: %s)]\n" 570214501Srpaulo "\t[-i init_count (default: %d)] initialize pool i times\n" 571214501Srpaulo "\t[-k kill_percentage (default: %llu%%)]\n" 572214501Srpaulo "\t[-p pool_name (default: %s)]\n" 573214501Srpaulo "\t[-f dir (default: %s)] file directory for vdev files\n" 574214501Srpaulo "\t[-V] verbose (use multiple times for ever more blather)\n" 575214501Srpaulo "\t[-E] use existing pool instead of creating new one\n" 576214501Srpaulo "\t[-T time (default: %llu sec)] total run time\n" 577214501Srpaulo "\t[-F freezeloops (default: %llu)] max loops in spa_freeze()\n" 578214501Srpaulo "\t[-P passtime (default: %llu sec)] time per pass\n" 579214501Srpaulo "\t[-B alt_ztest (default: <none>)] alternate ztest path\n" 580214501Srpaulo "\t[-h] (print help)\n" 581214501Srpaulo "", 582214501Srpaulo zo->zo_pool, 583214501Srpaulo (u_longlong_t)zo->zo_vdevs, /* -v */ 584214501Srpaulo nice_vdev_size, /* -s */ 585214501Srpaulo zo->zo_ashift, /* -a */ 586214501Srpaulo zo->zo_mirrors, /* -m */ 587214501Srpaulo zo->zo_raidz, /* -r */ 588214501Srpaulo zo->zo_raidz_parity, /* -R */ 589214501Srpaulo zo->zo_datasets, /* -d */ 590214501Srpaulo zo->zo_threads, /* -t */ 591214501Srpaulo nice_gang_bang, /* -g */ 592214501Srpaulo zo->zo_init, /* -i */ 593214501Srpaulo (u_longlong_t)zo->zo_killrate, /* -k */ 594214501Srpaulo zo->zo_pool, /* -p */ 595214501Srpaulo zo->zo_dir, /* -f */ 596214501Srpaulo (u_longlong_t)zo->zo_time, /* -T */ 597214501Srpaulo (u_longlong_t)zo->zo_maxloops, /* -F */ 598214501Srpaulo (u_longlong_t)zo->zo_passtime); 599214501Srpaulo exit(requested ? 0 : 1); 600214501Srpaulo} 601214501Srpaulo 602214501Srpaulostatic void 603214501Srpauloprocess_options(int argc, char **argv) 604214501Srpaulo{ 605214501Srpaulo char *path; 606214501Srpaulo ztest_shared_opts_t *zo = &ztest_opts; 607214501Srpaulo 608214501Srpaulo int opt; 609214501Srpaulo uint64_t value; 610214501Srpaulo char altdir[MAXNAMELEN] = { 0 }; 611214501Srpaulo 612214501Srpaulo bcopy(&ztest_opts_defaults, zo, sizeof (*zo)); 613214501Srpaulo 614214501Srpaulo while ((opt = getopt(argc, argv, 615214501Srpaulo "v:s:a:m:r:R:d:t:g:i:k:p:f:VET:P:hF:B:")) != EOF) { 616214501Srpaulo value = 0; 617214501Srpaulo switch (opt) { 618214501Srpaulo case 'v': 619214501Srpaulo case 's': 620214501Srpaulo case 'a': 621214501Srpaulo case 'm': 622214501Srpaulo case 'r': 623214501Srpaulo case 'R': 624214501Srpaulo case 'd': 625214501Srpaulo case 't': 626214501Srpaulo case 'g': 627214501Srpaulo case 'i': 628214501Srpaulo case 'k': 629 case 'T': 630 case 'P': 631 case 'F': 632 value = nicenumtoull(optarg); 633 } 634 switch (opt) { 635 case 'v': 636 zo->zo_vdevs = value; 637 break; 638 case 's': 639 zo->zo_vdev_size = MAX(SPA_MINDEVSIZE, value); 640 break; 641 case 'a': 642 zo->zo_ashift = value; 643 break; 644 case 'm': 645 zo->zo_mirrors = value; 646 break; 647 case 'r': 648 zo->zo_raidz = MAX(1, value); 649 break; 650 case 'R': 651 zo->zo_raidz_parity = MIN(MAX(value, 1), 3); 652 break; 653 case 'd': 654 zo->zo_datasets = MAX(1, value); 655 break; 656 case 't': 657 zo->zo_threads = MAX(1, value); 658 break; 659 case 'g': 660 zo->zo_metaslab_gang_bang = MAX(SPA_MINBLOCKSIZE << 1, 661 value); 662 break; 663 case 'i': 664 zo->zo_init = value; 665 break; 666 case 'k': 667 zo->zo_killrate = value; 668 break; 669 case 'p': 670 (void) strlcpy(zo->zo_pool, optarg, 671 sizeof (zo->zo_pool)); 672 break; 673 case 'f': 674 path = realpath(optarg, NULL); 675 if (path == NULL) { 676 (void) fprintf(stderr, "error: %s: %s\n", 677 optarg, strerror(errno)); 678 usage(B_FALSE); 679 } else { 680 (void) strlcpy(zo->zo_dir, path, 681 sizeof (zo->zo_dir)); 682 } 683 break; 684 case 'V': 685 zo->zo_verbose++; 686 break; 687 case 'E': 688 zo->zo_init = 0; 689 break; 690 case 'T': 691 zo->zo_time = value; 692 break; 693 case 'P': 694 zo->zo_passtime = MAX(1, value); 695 break; 696 case 'F': 697 zo->zo_maxloops = MAX(1, value); 698 break; 699 case 'B': 700 (void) strlcpy(altdir, optarg, sizeof (altdir)); 701 break; 702 case 'h': 703 usage(B_TRUE); 704 break; 705 case '?': 706 default: 707 usage(B_FALSE); 708 break; 709 } 710 } 711 712 zo->zo_raidz_parity = MIN(zo->zo_raidz_parity, zo->zo_raidz - 1); 713 714 zo->zo_vdevtime = 715 (zo->zo_vdevs > 0 ? zo->zo_time * NANOSEC / zo->zo_vdevs : 716 UINT64_MAX >> 2); 717 718 if (strlen(altdir) > 0) { 719 char *cmd; 720 char *realaltdir; 721 char *bin; 722 char *ztest; 723 char *isa; 724 int isalen; 725 726 cmd = umem_alloc(MAXPATHLEN, UMEM_NOFAIL); 727 realaltdir = umem_alloc(MAXPATHLEN, UMEM_NOFAIL); 728 729 VERIFY(NULL != realpath(getexecname(), cmd)); 730 if (0 != access(altdir, F_OK)) { 731 ztest_dump_core = B_FALSE; 732 fatal(B_TRUE, "invalid alternate ztest path: %s", 733 altdir); 734 } 735 VERIFY(NULL != realpath(altdir, realaltdir)); 736 737 /* 738 * 'cmd' should be of the form "<anything>/usr/bin/<isa>/ztest". 739 * We want to extract <isa> to determine if we should use 740 * 32 or 64 bit binaries. 741 */ 742 bin = strstr(cmd, "/usr/bin/"); 743 ztest = strstr(bin, "/ztest"); 744 isa = bin + 9; 745 isalen = ztest - isa; 746 (void) snprintf(zo->zo_alt_ztest, sizeof (zo->zo_alt_ztest), 747 "%s/usr/bin/%.*s/ztest", realaltdir, isalen, isa); 748 (void) snprintf(zo->zo_alt_libpath, sizeof (zo->zo_alt_libpath), 749 "%s/usr/lib/%.*s", realaltdir, isalen, isa); 750 751 if (0 != access(zo->zo_alt_ztest, X_OK)) { 752 ztest_dump_core = B_FALSE; 753 fatal(B_TRUE, "invalid alternate ztest: %s", 754 zo->zo_alt_ztest); 755 } else if (0 != access(zo->zo_alt_libpath, X_OK)) { 756 ztest_dump_core = B_FALSE; 757 fatal(B_TRUE, "invalid alternate lib directory %s", 758 zo->zo_alt_libpath); 759 } 760 761 umem_free(cmd, MAXPATHLEN); 762 umem_free(realaltdir, MAXPATHLEN); 763 } 764} 765 766static void 767ztest_kill(ztest_shared_t *zs) 768{ 769 zs->zs_alloc = metaslab_class_get_alloc(spa_normal_class(ztest_spa)); 770 zs->zs_space = metaslab_class_get_space(spa_normal_class(ztest_spa)); 771 (void) kill(getpid(), SIGKILL); 772} 773 774static uint64_t 775ztest_random(uint64_t range) 776{ 777 uint64_t r; 778 779 ASSERT3S(ztest_fd_rand, >=, 0); 780 781 if (range == 0) 782 return (0); 783 784 if (read(ztest_fd_rand, &r, sizeof (r)) != sizeof (r)) 785 fatal(1, "short read from /dev/urandom"); 786 787 return (r % range); 788} 789 790/* ARGSUSED */ 791static void 792ztest_record_enospc(const char *s) 793{ 794 ztest_shared->zs_enospc_count++; 795} 796 797static uint64_t 798ztest_get_ashift(void) 799{ 800 if (ztest_opts.zo_ashift == 0) 801 return (SPA_MINBLOCKSHIFT + ztest_random(3)); 802 return (ztest_opts.zo_ashift); 803} 804 805static nvlist_t * 806make_vdev_file(char *path, char *aux, char *pool, size_t size, uint64_t ashift) 807{ 808 char pathbuf[MAXPATHLEN]; 809 uint64_t vdev; 810 nvlist_t *file; 811 812 if (ashift == 0) 813 ashift = ztest_get_ashift(); 814 815 if (path == NULL) { 816 path = pathbuf; 817 818 if (aux != NULL) { 819 vdev = ztest_shared->zs_vdev_aux; 820 (void) snprintf(path, sizeof (pathbuf), 821 ztest_aux_template, ztest_opts.zo_dir, 822 pool == NULL ? ztest_opts.zo_pool : pool, 823 aux, vdev); 824 } else { 825 vdev = ztest_shared->zs_vdev_next_leaf++; 826 (void) snprintf(path, sizeof (pathbuf), 827 ztest_dev_template, ztest_opts.zo_dir, 828 pool == NULL ? ztest_opts.zo_pool : pool, vdev); 829 } 830 } 831 832 if (size != 0) { 833 int fd = open(path, O_RDWR | O_CREAT | O_TRUNC, 0666); 834 if (fd == -1) 835 fatal(1, "can't open %s", path); 836 if (ftruncate(fd, size) != 0) 837 fatal(1, "can't ftruncate %s", path); 838 (void) close(fd); 839 } 840 841 VERIFY(nvlist_alloc(&file, NV_UNIQUE_NAME, 0) == 0); 842 VERIFY(nvlist_add_string(file, ZPOOL_CONFIG_TYPE, VDEV_TYPE_FILE) == 0); 843 VERIFY(nvlist_add_string(file, ZPOOL_CONFIG_PATH, path) == 0); 844 VERIFY(nvlist_add_uint64(file, ZPOOL_CONFIG_ASHIFT, ashift) == 0); 845 846 return (file); 847} 848 849static nvlist_t * 850make_vdev_raidz(char *path, char *aux, char *pool, size_t size, 851 uint64_t ashift, int r) 852{ 853 nvlist_t *raidz, **child; 854 int c; 855 856 if (r < 2) 857 return (make_vdev_file(path, aux, pool, size, ashift)); 858 child = umem_alloc(r * sizeof (nvlist_t *), UMEM_NOFAIL); 859 860 for (c = 0; c < r; c++) 861 child[c] = make_vdev_file(path, aux, pool, size, ashift); 862 863 VERIFY(nvlist_alloc(&raidz, NV_UNIQUE_NAME, 0) == 0); 864 VERIFY(nvlist_add_string(raidz, ZPOOL_CONFIG_TYPE, 865 VDEV_TYPE_RAIDZ) == 0); 866 VERIFY(nvlist_add_uint64(raidz, ZPOOL_CONFIG_NPARITY, 867 ztest_opts.zo_raidz_parity) == 0); 868 VERIFY(nvlist_add_nvlist_array(raidz, ZPOOL_CONFIG_CHILDREN, 869 child, r) == 0); 870 871 for (c = 0; c < r; c++) 872 nvlist_free(child[c]); 873 874 umem_free(child, r * sizeof (nvlist_t *)); 875 876 return (raidz); 877} 878 879static nvlist_t * 880make_vdev_mirror(char *path, char *aux, char *pool, size_t size, 881 uint64_t ashift, int r, int m) 882{ 883 nvlist_t *mirror, **child; 884 int c; 885 886 if (m < 1) 887 return (make_vdev_raidz(path, aux, pool, size, ashift, r)); 888 889 child = umem_alloc(m * sizeof (nvlist_t *), UMEM_NOFAIL); 890 891 for (c = 0; c < m; c++) 892 child[c] = make_vdev_raidz(path, aux, pool, size, ashift, r); 893 894 VERIFY(nvlist_alloc(&mirror, NV_UNIQUE_NAME, 0) == 0); 895 VERIFY(nvlist_add_string(mirror, ZPOOL_CONFIG_TYPE, 896 VDEV_TYPE_MIRROR) == 0); 897 VERIFY(nvlist_add_nvlist_array(mirror, ZPOOL_CONFIG_CHILDREN, 898 child, m) == 0); 899 900 for (c = 0; c < m; c++) 901 nvlist_free(child[c]); 902 903 umem_free(child, m * sizeof (nvlist_t *)); 904 905 return (mirror); 906} 907 908static nvlist_t * 909make_vdev_root(char *path, char *aux, char *pool, size_t size, uint64_t ashift, 910 int log, int r, int m, int t) 911{ 912 nvlist_t *root, **child; 913 int c; 914 915 ASSERT(t > 0); 916 917 child = umem_alloc(t * sizeof (nvlist_t *), UMEM_NOFAIL); 918 919 for (c = 0; c < t; c++) { 920 child[c] = make_vdev_mirror(path, aux, pool, size, ashift, 921 r, m); 922 VERIFY(nvlist_add_uint64(child[c], ZPOOL_CONFIG_IS_LOG, 923 log) == 0); 924 } 925 926 VERIFY(nvlist_alloc(&root, NV_UNIQUE_NAME, 0) == 0); 927 VERIFY(nvlist_add_string(root, ZPOOL_CONFIG_TYPE, VDEV_TYPE_ROOT) == 0); 928 VERIFY(nvlist_add_nvlist_array(root, aux ? aux : ZPOOL_CONFIG_CHILDREN, 929 child, t) == 0); 930 931 for (c = 0; c < t; c++) 932 nvlist_free(child[c]); 933 934 umem_free(child, t * sizeof (nvlist_t *)); 935 936 return (root); 937} 938 939/* 940 * Find a random spa version. Returns back a random spa version in the 941 * range [initial_version, SPA_VERSION_FEATURES]. 942 */ 943static uint64_t 944ztest_random_spa_version(uint64_t initial_version) 945{ 946 uint64_t version = initial_version; 947 948 if (version <= SPA_VERSION_BEFORE_FEATURES) { 949 version = version + 950 ztest_random(SPA_VERSION_BEFORE_FEATURES - version + 1); 951 } 952 953 if (version > SPA_VERSION_BEFORE_FEATURES) 954 version = SPA_VERSION_FEATURES; 955 956 ASSERT(SPA_VERSION_IS_SUPPORTED(version)); 957 return (version); 958} 959 960static int 961ztest_random_blocksize(void) 962{ 963 return (1 << (SPA_MINBLOCKSHIFT + 964 ztest_random(SPA_MAXBLOCKSHIFT - SPA_MINBLOCKSHIFT + 1))); 965} 966 967static int 968ztest_random_ibshift(void) 969{ 970 return (DN_MIN_INDBLKSHIFT + 971 ztest_random(DN_MAX_INDBLKSHIFT - DN_MIN_INDBLKSHIFT + 1)); 972} 973 974static uint64_t 975ztest_random_vdev_top(spa_t *spa, boolean_t log_ok) 976{ 977 uint64_t top; 978 vdev_t *rvd = spa->spa_root_vdev; 979 vdev_t *tvd; 980 981 ASSERT(spa_config_held(spa, SCL_ALL, RW_READER) != 0); 982 983 do { 984 top = ztest_random(rvd->vdev_children); 985 tvd = rvd->vdev_child[top]; 986 } while (tvd->vdev_ishole || (tvd->vdev_islog && !log_ok) || 987 tvd->vdev_mg == NULL || tvd->vdev_mg->mg_class == NULL); 988 989 return (top); 990} 991 992static uint64_t 993ztest_random_dsl_prop(zfs_prop_t prop) 994{ 995 uint64_t value; 996 997 do { 998 value = zfs_prop_random_value(prop, ztest_random(-1ULL)); 999 } while (prop == ZFS_PROP_CHECKSUM && value == ZIO_CHECKSUM_OFF); 1000 1001 return (value); 1002} 1003 1004static int 1005ztest_dsl_prop_set_uint64(char *osname, zfs_prop_t prop, uint64_t value, 1006 boolean_t inherit) 1007{ 1008 const char *propname = zfs_prop_to_name(prop); 1009 const char *valname; 1010 char setpoint[MAXPATHLEN]; 1011 uint64_t curval; 1012 int error; 1013 1014 error = dsl_prop_set_int(osname, propname, 1015 (inherit ? ZPROP_SRC_NONE : ZPROP_SRC_LOCAL), value); 1016 1017 if (error == ENOSPC) { 1018 ztest_record_enospc(FTAG); 1019 return (error); 1020 } 1021 ASSERT0(error); 1022 1023 VERIFY0(dsl_prop_get_integer(osname, propname, &curval, setpoint)); 1024 1025 if (ztest_opts.zo_verbose >= 6) { 1026 VERIFY(zfs_prop_index_to_string(prop, curval, &valname) == 0); 1027 (void) printf("%s %s = %s at '%s'\n", 1028 osname, propname, valname, setpoint); 1029 } 1030 1031 return (error); 1032} 1033 1034static int 1035ztest_spa_prop_set_uint64(zpool_prop_t prop, uint64_t value) 1036{ 1037 spa_t *spa = ztest_spa; 1038 nvlist_t *props = NULL; 1039 int error; 1040 1041 VERIFY(nvlist_alloc(&props, NV_UNIQUE_NAME, 0) == 0); 1042 VERIFY(nvlist_add_uint64(props, zpool_prop_to_name(prop), value) == 0); 1043 1044 error = spa_prop_set(spa, props); 1045 1046 nvlist_free(props); 1047 1048 if (error == ENOSPC) { 1049 ztest_record_enospc(FTAG); 1050 return (error); 1051 } 1052 ASSERT0(error); 1053 1054 return (error); 1055} 1056 1057static void 1058ztest_rll_init(rll_t *rll) 1059{ 1060 rll->rll_writer = NULL; 1061 rll->rll_readers = 0; 1062 VERIFY(_mutex_init(&rll->rll_lock, USYNC_THREAD, NULL) == 0); 1063 VERIFY(cond_init(&rll->rll_cv, USYNC_THREAD, NULL) == 0); 1064} 1065 1066static void 1067ztest_rll_destroy(rll_t *rll) 1068{ 1069 ASSERT(rll->rll_writer == NULL); 1070 ASSERT(rll->rll_readers == 0); 1071 VERIFY(_mutex_destroy(&rll->rll_lock) == 0); 1072 VERIFY(cond_destroy(&rll->rll_cv) == 0); 1073} 1074 1075static void 1076ztest_rll_lock(rll_t *rll, rl_type_t type) 1077{ 1078 VERIFY(mutex_lock(&rll->rll_lock) == 0); 1079 1080 if (type == RL_READER) { 1081 while (rll->rll_writer != NULL) 1082 (void) cond_wait(&rll->rll_cv, &rll->rll_lock); 1083 rll->rll_readers++; 1084 } else { 1085 while (rll->rll_writer != NULL || rll->rll_readers) 1086 (void) cond_wait(&rll->rll_cv, &rll->rll_lock); 1087 rll->rll_writer = curthread; 1088 } 1089 1090 VERIFY(mutex_unlock(&rll->rll_lock) == 0); 1091} 1092 1093static void 1094ztest_rll_unlock(rll_t *rll) 1095{ 1096 VERIFY(mutex_lock(&rll->rll_lock) == 0); 1097 1098 if (rll->rll_writer) { 1099 ASSERT(rll->rll_readers == 0); 1100 rll->rll_writer = NULL; 1101 } else { 1102 ASSERT(rll->rll_readers != 0); 1103 ASSERT(rll->rll_writer == NULL); 1104 rll->rll_readers--; 1105 } 1106 1107 if (rll->rll_writer == NULL && rll->rll_readers == 0) 1108 VERIFY(cond_broadcast(&rll->rll_cv) == 0); 1109 1110 VERIFY(mutex_unlock(&rll->rll_lock) == 0); 1111} 1112 1113static void 1114ztest_object_lock(ztest_ds_t *zd, uint64_t object, rl_type_t type) 1115{ 1116 rll_t *rll = &zd->zd_object_lock[object & (ZTEST_OBJECT_LOCKS - 1)]; 1117 1118 ztest_rll_lock(rll, type); 1119} 1120 1121static void 1122ztest_object_unlock(ztest_ds_t *zd, uint64_t object) 1123{ 1124 rll_t *rll = &zd->zd_object_lock[object & (ZTEST_OBJECT_LOCKS - 1)]; 1125 1126 ztest_rll_unlock(rll); 1127} 1128 1129static rl_t * 1130ztest_range_lock(ztest_ds_t *zd, uint64_t object, uint64_t offset, 1131 uint64_t size, rl_type_t type) 1132{ 1133 uint64_t hash = object ^ (offset % (ZTEST_RANGE_LOCKS + 1)); 1134 rll_t *rll = &zd->zd_range_lock[hash & (ZTEST_RANGE_LOCKS - 1)]; 1135 rl_t *rl; 1136 1137 rl = umem_alloc(sizeof (*rl), UMEM_NOFAIL); 1138 rl->rl_object = object; 1139 rl->rl_offset = offset; 1140 rl->rl_size = size; 1141 rl->rl_lock = rll; 1142 1143 ztest_rll_lock(rll, type); 1144 1145 return (rl); 1146} 1147 1148static void 1149ztest_range_unlock(rl_t *rl) 1150{ 1151 rll_t *rll = rl->rl_lock; 1152 1153 ztest_rll_unlock(rll); 1154 1155 umem_free(rl, sizeof (*rl)); 1156} 1157 1158static void 1159ztest_zd_init(ztest_ds_t *zd, ztest_shared_ds_t *szd, objset_t *os) 1160{ 1161 zd->zd_os = os; 1162 zd->zd_zilog = dmu_objset_zil(os); 1163 zd->zd_shared = szd; 1164 dmu_objset_name(os, zd->zd_name); 1165 1166 if (zd->zd_shared != NULL) 1167 zd->zd_shared->zd_seq = 0; 1168 1169 VERIFY(rwlock_init(&zd->zd_zilog_lock, USYNC_THREAD, NULL) == 0); 1170 VERIFY(_mutex_init(&zd->zd_dirobj_lock, USYNC_THREAD, NULL) == 0); 1171 1172 for (int l = 0; l < ZTEST_OBJECT_LOCKS; l++) 1173 ztest_rll_init(&zd->zd_object_lock[l]); 1174 1175 for (int l = 0; l < ZTEST_RANGE_LOCKS; l++) 1176 ztest_rll_init(&zd->zd_range_lock[l]); 1177} 1178 1179static void 1180ztest_zd_fini(ztest_ds_t *zd) 1181{ 1182 VERIFY(_mutex_destroy(&zd->zd_dirobj_lock) == 0); 1183 1184 for (int l = 0; l < ZTEST_OBJECT_LOCKS; l++) 1185 ztest_rll_destroy(&zd->zd_object_lock[l]); 1186 1187 for (int l = 0; l < ZTEST_RANGE_LOCKS; l++) 1188 ztest_rll_destroy(&zd->zd_range_lock[l]); 1189} 1190 1191#define TXG_MIGHTWAIT (ztest_random(10) == 0 ? TXG_NOWAIT : TXG_WAIT) 1192 1193static uint64_t 1194ztest_tx_assign(dmu_tx_t *tx, uint64_t txg_how, const char *tag) 1195{ 1196 uint64_t txg; 1197 int error; 1198 1199 /* 1200 * Attempt to assign tx to some transaction group. 1201 */ 1202 error = dmu_tx_assign(tx, txg_how); 1203 if (error) { 1204 if (error == ERESTART) { 1205 ASSERT(txg_how == TXG_NOWAIT); 1206 dmu_tx_wait(tx); 1207 } else { 1208 ASSERT3U(error, ==, ENOSPC); 1209 ztest_record_enospc(tag); 1210 } 1211 dmu_tx_abort(tx); 1212 return (0); 1213 } 1214 txg = dmu_tx_get_txg(tx); 1215 ASSERT(txg != 0); 1216 return (txg); 1217} 1218 1219static void 1220ztest_pattern_set(void *buf, uint64_t size, uint64_t value) 1221{ 1222 uint64_t *ip = buf; 1223 uint64_t *ip_end = (uint64_t *)((uintptr_t)buf + (uintptr_t)size); 1224 1225 while (ip < ip_end) 1226 *ip++ = value; 1227} 1228 1229static boolean_t 1230ztest_pattern_match(void *buf, uint64_t size, uint64_t value) 1231{ 1232 uint64_t *ip = buf; 1233 uint64_t *ip_end = (uint64_t *)((uintptr_t)buf + (uintptr_t)size); 1234 uint64_t diff = 0; 1235 1236 while (ip < ip_end) 1237 diff |= (value - *ip++); 1238 1239 return (diff == 0); 1240} 1241 1242static void 1243ztest_bt_generate(ztest_block_tag_t *bt, objset_t *os, uint64_t object, 1244 uint64_t offset, uint64_t gen, uint64_t txg, uint64_t crtxg) 1245{ 1246 bt->bt_magic = BT_MAGIC; 1247 bt->bt_objset = dmu_objset_id(os); 1248 bt->bt_object = object; 1249 bt->bt_offset = offset; 1250 bt->bt_gen = gen; 1251 bt->bt_txg = txg; 1252 bt->bt_crtxg = crtxg; 1253} 1254 1255static void 1256ztest_bt_verify(ztest_block_tag_t *bt, objset_t *os, uint64_t object, 1257 uint64_t offset, uint64_t gen, uint64_t txg, uint64_t crtxg) 1258{ 1259 ASSERT(bt->bt_magic == BT_MAGIC); 1260 ASSERT(bt->bt_objset == dmu_objset_id(os)); 1261 ASSERT(bt->bt_object == object); 1262 ASSERT(bt->bt_offset == offset); 1263 ASSERT(bt->bt_gen <= gen); 1264 ASSERT(bt->bt_txg <= txg); 1265 ASSERT(bt->bt_crtxg == crtxg); 1266} 1267 1268static ztest_block_tag_t * 1269ztest_bt_bonus(dmu_buf_t *db) 1270{ 1271 dmu_object_info_t doi; 1272 ztest_block_tag_t *bt; 1273 1274 dmu_object_info_from_db(db, &doi); 1275 ASSERT3U(doi.doi_bonus_size, <=, db->db_size); 1276 ASSERT3U(doi.doi_bonus_size, >=, sizeof (*bt)); 1277 bt = (void *)((char *)db->db_data + doi.doi_bonus_size - sizeof (*bt)); 1278 1279 return (bt); 1280} 1281 1282/* 1283 * ZIL logging ops 1284 */ 1285 1286#define lrz_type lr_mode 1287#define lrz_blocksize lr_uid 1288#define lrz_ibshift lr_gid 1289#define lrz_bonustype lr_rdev 1290#define lrz_bonuslen lr_crtime[1] 1291 1292static void 1293ztest_log_create(ztest_ds_t *zd, dmu_tx_t *tx, lr_create_t *lr) 1294{ 1295 char *name = (void *)(lr + 1); /* name follows lr */ 1296 size_t namesize = strlen(name) + 1; 1297 itx_t *itx; 1298 1299 if (zil_replaying(zd->zd_zilog, tx)) 1300 return; 1301 1302 itx = zil_itx_create(TX_CREATE, sizeof (*lr) + namesize); 1303 bcopy(&lr->lr_common + 1, &itx->itx_lr + 1, 1304 sizeof (*lr) + namesize - sizeof (lr_t)); 1305 1306 zil_itx_assign(zd->zd_zilog, itx, tx); 1307} 1308 1309static void 1310ztest_log_remove(ztest_ds_t *zd, dmu_tx_t *tx, lr_remove_t *lr, uint64_t object) 1311{ 1312 char *name = (void *)(lr + 1); /* name follows lr */ 1313 size_t namesize = strlen(name) + 1; 1314 itx_t *itx; 1315 1316 if (zil_replaying(zd->zd_zilog, tx)) 1317 return; 1318 1319 itx = zil_itx_create(TX_REMOVE, sizeof (*lr) + namesize); 1320 bcopy(&lr->lr_common + 1, &itx->itx_lr + 1, 1321 sizeof (*lr) + namesize - sizeof (lr_t)); 1322 1323 itx->itx_oid = object; 1324 zil_itx_assign(zd->zd_zilog, itx, tx); 1325} 1326 1327static void 1328ztest_log_write(ztest_ds_t *zd, dmu_tx_t *tx, lr_write_t *lr) 1329{ 1330 itx_t *itx; 1331 itx_wr_state_t write_state = ztest_random(WR_NUM_STATES); 1332 1333 if (zil_replaying(zd->zd_zilog, tx)) 1334 return; 1335 1336 if (lr->lr_length > ZIL_MAX_LOG_DATA) 1337 write_state = WR_INDIRECT; 1338 1339 itx = zil_itx_create(TX_WRITE, 1340 sizeof (*lr) + (write_state == WR_COPIED ? lr->lr_length : 0)); 1341 1342 if (write_state == WR_COPIED && 1343 dmu_read(zd->zd_os, lr->lr_foid, lr->lr_offset, lr->lr_length, 1344 ((lr_write_t *)&itx->itx_lr) + 1, DMU_READ_NO_PREFETCH) != 0) { 1345 zil_itx_destroy(itx); 1346 itx = zil_itx_create(TX_WRITE, sizeof (*lr)); 1347 write_state = WR_NEED_COPY; 1348 } 1349 itx->itx_private = zd; 1350 itx->itx_wr_state = write_state; 1351 itx->itx_sync = (ztest_random(8) == 0); 1352 itx->itx_sod += (write_state == WR_NEED_COPY ? lr->lr_length : 0); 1353 1354 bcopy(&lr->lr_common + 1, &itx->itx_lr + 1, 1355 sizeof (*lr) - sizeof (lr_t)); 1356 1357 zil_itx_assign(zd->zd_zilog, itx, tx); 1358} 1359 1360static void 1361ztest_log_truncate(ztest_ds_t *zd, dmu_tx_t *tx, lr_truncate_t *lr) 1362{ 1363 itx_t *itx; 1364 1365 if (zil_replaying(zd->zd_zilog, tx)) 1366 return; 1367 1368 itx = zil_itx_create(TX_TRUNCATE, sizeof (*lr)); 1369 bcopy(&lr->lr_common + 1, &itx->itx_lr + 1, 1370 sizeof (*lr) - sizeof (lr_t)); 1371 1372 itx->itx_sync = B_FALSE; 1373 zil_itx_assign(zd->zd_zilog, itx, tx); 1374} 1375 1376static void 1377ztest_log_setattr(ztest_ds_t *zd, dmu_tx_t *tx, lr_setattr_t *lr) 1378{ 1379 itx_t *itx; 1380 1381 if (zil_replaying(zd->zd_zilog, tx)) 1382 return; 1383 1384 itx = zil_itx_create(TX_SETATTR, sizeof (*lr)); 1385 bcopy(&lr->lr_common + 1, &itx->itx_lr + 1, 1386 sizeof (*lr) - sizeof (lr_t)); 1387 1388 itx->itx_sync = B_FALSE; 1389 zil_itx_assign(zd->zd_zilog, itx, tx); 1390} 1391 1392/* 1393 * ZIL replay ops 1394 */ 1395static int 1396ztest_replay_create(ztest_ds_t *zd, lr_create_t *lr, boolean_t byteswap) 1397{ 1398 char *name = (void *)(lr + 1); /* name follows lr */ 1399 objset_t *os = zd->zd_os; 1400 ztest_block_tag_t *bbt; 1401 dmu_buf_t *db; 1402 dmu_tx_t *tx; 1403 uint64_t txg; 1404 int error = 0; 1405 1406 if (byteswap) 1407 byteswap_uint64_array(lr, sizeof (*lr)); 1408 1409 ASSERT(lr->lr_doid == ZTEST_DIROBJ); 1410 ASSERT(name[0] != '\0'); 1411 1412 tx = dmu_tx_create(os); 1413 1414 dmu_tx_hold_zap(tx, lr->lr_doid, B_TRUE, name); 1415 1416 if (lr->lrz_type == DMU_OT_ZAP_OTHER) { 1417 dmu_tx_hold_zap(tx, DMU_NEW_OBJECT, B_TRUE, NULL); 1418 } else { 1419 dmu_tx_hold_bonus(tx, DMU_NEW_OBJECT); 1420 } 1421 1422 txg = ztest_tx_assign(tx, TXG_WAIT, FTAG); 1423 if (txg == 0) 1424 return (ENOSPC); 1425 1426 ASSERT(dmu_objset_zil(os)->zl_replay == !!lr->lr_foid); 1427 1428 if (lr->lrz_type == DMU_OT_ZAP_OTHER) { 1429 if (lr->lr_foid == 0) { 1430 lr->lr_foid = zap_create(os, 1431 lr->lrz_type, lr->lrz_bonustype, 1432 lr->lrz_bonuslen, tx); 1433 } else { 1434 error = zap_create_claim(os, lr->lr_foid, 1435 lr->lrz_type, lr->lrz_bonustype, 1436 lr->lrz_bonuslen, tx); 1437 } 1438 } else { 1439 if (lr->lr_foid == 0) { 1440 lr->lr_foid = dmu_object_alloc(os, 1441 lr->lrz_type, 0, lr->lrz_bonustype, 1442 lr->lrz_bonuslen, tx); 1443 } else { 1444 error = dmu_object_claim(os, lr->lr_foid, 1445 lr->lrz_type, 0, lr->lrz_bonustype, 1446 lr->lrz_bonuslen, tx); 1447 } 1448 } 1449 1450 if (error) { 1451 ASSERT3U(error, ==, EEXIST); 1452 ASSERT(zd->zd_zilog->zl_replay); 1453 dmu_tx_commit(tx); 1454 return (error); 1455 } 1456 1457 ASSERT(lr->lr_foid != 0); 1458 1459 if (lr->lrz_type != DMU_OT_ZAP_OTHER) 1460 VERIFY3U(0, ==, dmu_object_set_blocksize(os, lr->lr_foid, 1461 lr->lrz_blocksize, lr->lrz_ibshift, tx)); 1462 1463 VERIFY3U(0, ==, dmu_bonus_hold(os, lr->lr_foid, FTAG, &db)); 1464 bbt = ztest_bt_bonus(db); 1465 dmu_buf_will_dirty(db, tx); 1466 ztest_bt_generate(bbt, os, lr->lr_foid, -1ULL, lr->lr_gen, txg, txg); 1467 dmu_buf_rele(db, FTAG); 1468 1469 VERIFY3U(0, ==, zap_add(os, lr->lr_doid, name, sizeof (uint64_t), 1, 1470 &lr->lr_foid, tx)); 1471 1472 (void) ztest_log_create(zd, tx, lr); 1473 1474 dmu_tx_commit(tx); 1475 1476 return (0); 1477} 1478 1479static int 1480ztest_replay_remove(ztest_ds_t *zd, lr_remove_t *lr, boolean_t byteswap) 1481{ 1482 char *name = (void *)(lr + 1); /* name follows lr */ 1483 objset_t *os = zd->zd_os; 1484 dmu_object_info_t doi; 1485 dmu_tx_t *tx; 1486 uint64_t object, txg; 1487 1488 if (byteswap) 1489 byteswap_uint64_array(lr, sizeof (*lr)); 1490 1491 ASSERT(lr->lr_doid == ZTEST_DIROBJ); 1492 ASSERT(name[0] != '\0'); 1493 1494 VERIFY3U(0, ==, 1495 zap_lookup(os, lr->lr_doid, name, sizeof (object), 1, &object)); 1496 ASSERT(object != 0); 1497 1498 ztest_object_lock(zd, object, RL_WRITER); 1499 1500 VERIFY3U(0, ==, dmu_object_info(os, object, &doi)); 1501 1502 tx = dmu_tx_create(os); 1503 1504 dmu_tx_hold_zap(tx, lr->lr_doid, B_FALSE, name); 1505 dmu_tx_hold_free(tx, object, 0, DMU_OBJECT_END); 1506 1507 txg = ztest_tx_assign(tx, TXG_WAIT, FTAG); 1508 if (txg == 0) { 1509 ztest_object_unlock(zd, object); 1510 return (ENOSPC); 1511 } 1512 1513 if (doi.doi_type == DMU_OT_ZAP_OTHER) { 1514 VERIFY3U(0, ==, zap_destroy(os, object, tx)); 1515 } else { 1516 VERIFY3U(0, ==, dmu_object_free(os, object, tx)); 1517 } 1518 1519 VERIFY3U(0, ==, zap_remove(os, lr->lr_doid, name, tx)); 1520 1521 (void) ztest_log_remove(zd, tx, lr, object); 1522 1523 dmu_tx_commit(tx); 1524 1525 ztest_object_unlock(zd, object); 1526 1527 return (0); 1528} 1529 1530static int 1531ztest_replay_write(ztest_ds_t *zd, lr_write_t *lr, boolean_t byteswap) 1532{ 1533 objset_t *os = zd->zd_os; 1534 void *data = lr + 1; /* data follows lr */ 1535 uint64_t offset, length; 1536 ztest_block_tag_t *bt = data; 1537 ztest_block_tag_t *bbt; 1538 uint64_t gen, txg, lrtxg, crtxg; 1539 dmu_object_info_t doi; 1540 dmu_tx_t *tx; 1541 dmu_buf_t *db; 1542 arc_buf_t *abuf = NULL; 1543 rl_t *rl; 1544 1545 if (byteswap) 1546 byteswap_uint64_array(lr, sizeof (*lr)); 1547 1548 offset = lr->lr_offset; 1549 length = lr->lr_length; 1550 1551 /* If it's a dmu_sync() block, write the whole block */ 1552 if (lr->lr_common.lrc_reclen == sizeof (lr_write_t)) { 1553 uint64_t blocksize = BP_GET_LSIZE(&lr->lr_blkptr); 1554 if (length < blocksize) { 1555 offset -= offset % blocksize; 1556 length = blocksize; 1557 } 1558 } 1559 1560 if (bt->bt_magic == BSWAP_64(BT_MAGIC)) 1561 byteswap_uint64_array(bt, sizeof (*bt)); 1562 1563 if (bt->bt_magic != BT_MAGIC) 1564 bt = NULL; 1565 1566 ztest_object_lock(zd, lr->lr_foid, RL_READER); 1567 rl = ztest_range_lock(zd, lr->lr_foid, offset, length, RL_WRITER); 1568 1569 VERIFY3U(0, ==, dmu_bonus_hold(os, lr->lr_foid, FTAG, &db)); 1570 1571 dmu_object_info_from_db(db, &doi); 1572 1573 bbt = ztest_bt_bonus(db); 1574 ASSERT3U(bbt->bt_magic, ==, BT_MAGIC); 1575 gen = bbt->bt_gen; 1576 crtxg = bbt->bt_crtxg; 1577 lrtxg = lr->lr_common.lrc_txg; 1578 1579 tx = dmu_tx_create(os); 1580 1581 dmu_tx_hold_write(tx, lr->lr_foid, offset, length); 1582 1583 if (ztest_random(8) == 0 && length == doi.doi_data_block_size && 1584 P2PHASE(offset, length) == 0) 1585 abuf = dmu_request_arcbuf(db, length); 1586 1587 txg = ztest_tx_assign(tx, TXG_WAIT, FTAG); 1588 if (txg == 0) { 1589 if (abuf != NULL) 1590 dmu_return_arcbuf(abuf); 1591 dmu_buf_rele(db, FTAG); 1592 ztest_range_unlock(rl); 1593 ztest_object_unlock(zd, lr->lr_foid); 1594 return (ENOSPC); 1595 } 1596 1597 if (bt != NULL) { 1598 /* 1599 * Usually, verify the old data before writing new data -- 1600 * but not always, because we also want to verify correct 1601 * behavior when the data was not recently read into cache. 1602 */ 1603 ASSERT(offset % doi.doi_data_block_size == 0); 1604 if (ztest_random(4) != 0) { 1605 int prefetch = ztest_random(2) ? 1606 DMU_READ_PREFETCH : DMU_READ_NO_PREFETCH; 1607 ztest_block_tag_t rbt; 1608 1609 VERIFY(dmu_read(os, lr->lr_foid, offset, 1610 sizeof (rbt), &rbt, prefetch) == 0); 1611 if (rbt.bt_magic == BT_MAGIC) { 1612 ztest_bt_verify(&rbt, os, lr->lr_foid, 1613 offset, gen, txg, crtxg); 1614 } 1615 } 1616 1617 /* 1618 * Writes can appear to be newer than the bonus buffer because 1619 * the ztest_get_data() callback does a dmu_read() of the 1620 * open-context data, which may be different than the data 1621 * as it was when the write was generated. 1622 */ 1623 if (zd->zd_zilog->zl_replay) { 1624 ztest_bt_verify(bt, os, lr->lr_foid, offset, 1625 MAX(gen, bt->bt_gen), MAX(txg, lrtxg), 1626 bt->bt_crtxg); 1627 } 1628 1629 /* 1630 * Set the bt's gen/txg to the bonus buffer's gen/txg 1631 * so that all of the usual ASSERTs will work. 1632 */ 1633 ztest_bt_generate(bt, os, lr->lr_foid, offset, gen, txg, crtxg); 1634 } 1635 1636 if (abuf == NULL) { 1637 dmu_write(os, lr->lr_foid, offset, length, data, tx); 1638 } else { 1639 bcopy(data, abuf->b_data, length); 1640 dmu_assign_arcbuf(db, offset, abuf, tx); 1641 } 1642 1643 (void) ztest_log_write(zd, tx, lr); 1644 1645 dmu_buf_rele(db, FTAG); 1646 1647 dmu_tx_commit(tx); 1648 1649 ztest_range_unlock(rl); 1650 ztest_object_unlock(zd, lr->lr_foid); 1651 1652 return (0); 1653} 1654 1655static int 1656ztest_replay_truncate(ztest_ds_t *zd, lr_truncate_t *lr, boolean_t byteswap) 1657{ 1658 objset_t *os = zd->zd_os; 1659 dmu_tx_t *tx; 1660 uint64_t txg; 1661 rl_t *rl; 1662 1663 if (byteswap) 1664 byteswap_uint64_array(lr, sizeof (*lr)); 1665 1666 ztest_object_lock(zd, lr->lr_foid, RL_READER); 1667 rl = ztest_range_lock(zd, lr->lr_foid, lr->lr_offset, lr->lr_length, 1668 RL_WRITER); 1669 1670 tx = dmu_tx_create(os); 1671 1672 dmu_tx_hold_free(tx, lr->lr_foid, lr->lr_offset, lr->lr_length); 1673 1674 txg = ztest_tx_assign(tx, TXG_WAIT, FTAG); 1675 if (txg == 0) { 1676 ztest_range_unlock(rl); 1677 ztest_object_unlock(zd, lr->lr_foid); 1678 return (ENOSPC); 1679 } 1680 1681 VERIFY(dmu_free_range(os, lr->lr_foid, lr->lr_offset, 1682 lr->lr_length, tx) == 0); 1683 1684 (void) ztest_log_truncate(zd, tx, lr); 1685 1686 dmu_tx_commit(tx); 1687 1688 ztest_range_unlock(rl); 1689 ztest_object_unlock(zd, lr->lr_foid); 1690 1691 return (0); 1692} 1693 1694static int 1695ztest_replay_setattr(ztest_ds_t *zd, lr_setattr_t *lr, boolean_t byteswap) 1696{ 1697 objset_t *os = zd->zd_os; 1698 dmu_tx_t *tx; 1699 dmu_buf_t *db; 1700 ztest_block_tag_t *bbt; 1701 uint64_t txg, lrtxg, crtxg; 1702 1703 if (byteswap) 1704 byteswap_uint64_array(lr, sizeof (*lr)); 1705 1706 ztest_object_lock(zd, lr->lr_foid, RL_WRITER); 1707 1708 VERIFY3U(0, ==, dmu_bonus_hold(os, lr->lr_foid, FTAG, &db)); 1709 1710 tx = dmu_tx_create(os); 1711 dmu_tx_hold_bonus(tx, lr->lr_foid); 1712 1713 txg = ztest_tx_assign(tx, TXG_WAIT, FTAG); 1714 if (txg == 0) { 1715 dmu_buf_rele(db, FTAG); 1716 ztest_object_unlock(zd, lr->lr_foid); 1717 return (ENOSPC); 1718 } 1719 1720 bbt = ztest_bt_bonus(db); 1721 ASSERT3U(bbt->bt_magic, ==, BT_MAGIC); 1722 crtxg = bbt->bt_crtxg; 1723 lrtxg = lr->lr_common.lrc_txg; 1724 1725 if (zd->zd_zilog->zl_replay) { 1726 ASSERT(lr->lr_size != 0); 1727 ASSERT(lr->lr_mode != 0); 1728 ASSERT(lrtxg != 0); 1729 } else { 1730 /* 1731 * Randomly change the size and increment the generation. 1732 */ 1733 lr->lr_size = (ztest_random(db->db_size / sizeof (*bbt)) + 1) * 1734 sizeof (*bbt); 1735 lr->lr_mode = bbt->bt_gen + 1; 1736 ASSERT(lrtxg == 0); 1737 } 1738 1739 /* 1740 * Verify that the current bonus buffer is not newer than our txg. 1741 */ 1742 ztest_bt_verify(bbt, os, lr->lr_foid, -1ULL, lr->lr_mode, 1743 MAX(txg, lrtxg), crtxg); 1744 1745 dmu_buf_will_dirty(db, tx); 1746 1747 ASSERT3U(lr->lr_size, >=, sizeof (*bbt)); 1748 ASSERT3U(lr->lr_size, <=, db->db_size); 1749 VERIFY0(dmu_set_bonus(db, lr->lr_size, tx)); 1750 bbt = ztest_bt_bonus(db); 1751 1752 ztest_bt_generate(bbt, os, lr->lr_foid, -1ULL, lr->lr_mode, txg, crtxg); 1753 1754 dmu_buf_rele(db, FTAG); 1755 1756 (void) ztest_log_setattr(zd, tx, lr); 1757 1758 dmu_tx_commit(tx); 1759 1760 ztest_object_unlock(zd, lr->lr_foid); 1761 1762 return (0); 1763} 1764 1765zil_replay_func_t *ztest_replay_vector[TX_MAX_TYPE] = { 1766 NULL, /* 0 no such transaction type */ 1767 ztest_replay_create, /* TX_CREATE */ 1768 NULL, /* TX_MKDIR */ 1769 NULL, /* TX_MKXATTR */ 1770 NULL, /* TX_SYMLINK */ 1771 ztest_replay_remove, /* TX_REMOVE */ 1772 NULL, /* TX_RMDIR */ 1773 NULL, /* TX_LINK */ 1774 NULL, /* TX_RENAME */ 1775 ztest_replay_write, /* TX_WRITE */ 1776 ztest_replay_truncate, /* TX_TRUNCATE */ 1777 ztest_replay_setattr, /* TX_SETATTR */ 1778 NULL, /* TX_ACL */ 1779 NULL, /* TX_CREATE_ACL */ 1780 NULL, /* TX_CREATE_ATTR */ 1781 NULL, /* TX_CREATE_ACL_ATTR */ 1782 NULL, /* TX_MKDIR_ACL */ 1783 NULL, /* TX_MKDIR_ATTR */ 1784 NULL, /* TX_MKDIR_ACL_ATTR */ 1785 NULL, /* TX_WRITE2 */ 1786}; 1787 1788/* 1789 * ZIL get_data callbacks 1790 */ 1791 1792static void 1793ztest_get_done(zgd_t *zgd, int error) 1794{ 1795 ztest_ds_t *zd = zgd->zgd_private; 1796 uint64_t object = zgd->zgd_rl->rl_object; 1797 1798 if (zgd->zgd_db) 1799 dmu_buf_rele(zgd->zgd_db, zgd); 1800 1801 ztest_range_unlock(zgd->zgd_rl); 1802 ztest_object_unlock(zd, object); 1803 1804 if (error == 0 && zgd->zgd_bp) 1805 zil_add_block(zgd->zgd_zilog, zgd->zgd_bp); 1806 1807 umem_free(zgd, sizeof (*zgd)); 1808} 1809 1810static int 1811ztest_get_data(void *arg, lr_write_t *lr, char *buf, zio_t *zio) 1812{ 1813 ztest_ds_t *zd = arg; 1814 objset_t *os = zd->zd_os; 1815 uint64_t object = lr->lr_foid; 1816 uint64_t offset = lr->lr_offset; 1817 uint64_t size = lr->lr_length; 1818 blkptr_t *bp = &lr->lr_blkptr; 1819 uint64_t txg = lr->lr_common.lrc_txg; 1820 uint64_t crtxg; 1821 dmu_object_info_t doi; 1822 dmu_buf_t *db; 1823 zgd_t *zgd; 1824 int error; 1825 1826 ztest_object_lock(zd, object, RL_READER); 1827 error = dmu_bonus_hold(os, object, FTAG, &db); 1828 if (error) { 1829 ztest_object_unlock(zd, object); 1830 return (error); 1831 } 1832 1833 crtxg = ztest_bt_bonus(db)->bt_crtxg; 1834 1835 if (crtxg == 0 || crtxg > txg) { 1836 dmu_buf_rele(db, FTAG); 1837 ztest_object_unlock(zd, object); 1838 return (ENOENT); 1839 } 1840 1841 dmu_object_info_from_db(db, &doi); 1842 dmu_buf_rele(db, FTAG); 1843 db = NULL; 1844 1845 zgd = umem_zalloc(sizeof (*zgd), UMEM_NOFAIL); 1846 zgd->zgd_zilog = zd->zd_zilog; 1847 zgd->zgd_private = zd; 1848 1849 if (buf != NULL) { /* immediate write */ 1850 zgd->zgd_rl = ztest_range_lock(zd, object, offset, size, 1851 RL_READER); 1852 1853 error = dmu_read(os, object, offset, size, buf, 1854 DMU_READ_NO_PREFETCH); 1855 ASSERT(error == 0); 1856 } else { 1857 size = doi.doi_data_block_size; 1858 if (ISP2(size)) { 1859 offset = P2ALIGN(offset, size); 1860 } else { 1861 ASSERT(offset < size); 1862 offset = 0; 1863 } 1864 1865 zgd->zgd_rl = ztest_range_lock(zd, object, offset, size, 1866 RL_READER); 1867 1868 error = dmu_buf_hold(os, object, offset, zgd, &db, 1869 DMU_READ_NO_PREFETCH); 1870 1871 if (error == 0) { 1872 blkptr_t *obp = dmu_buf_get_blkptr(db); 1873 if (obp) { 1874 ASSERT(BP_IS_HOLE(bp)); 1875 *bp = *obp; 1876 } 1877 1878 zgd->zgd_db = db; 1879 zgd->zgd_bp = bp; 1880 1881 ASSERT(db->db_offset == offset); 1882 ASSERT(db->db_size == size); 1883 1884 error = dmu_sync(zio, lr->lr_common.lrc_txg, 1885 ztest_get_done, zgd); 1886 1887 if (error == 0) 1888 return (0); 1889 } 1890 } 1891 1892 ztest_get_done(zgd, error); 1893 1894 return (error); 1895} 1896 1897static void * 1898ztest_lr_alloc(size_t lrsize, char *name) 1899{ 1900 char *lr; 1901 size_t namesize = name ? strlen(name) + 1 : 0; 1902 1903 lr = umem_zalloc(lrsize + namesize, UMEM_NOFAIL); 1904 1905 if (name) 1906 bcopy(name, lr + lrsize, namesize); 1907 1908 return (lr); 1909} 1910 1911void 1912ztest_lr_free(void *lr, size_t lrsize, char *name) 1913{ 1914 size_t namesize = name ? strlen(name) + 1 : 0; 1915 1916 umem_free(lr, lrsize + namesize); 1917} 1918 1919/* 1920 * Lookup a bunch of objects. Returns the number of objects not found. 1921 */ 1922static int 1923ztest_lookup(ztest_ds_t *zd, ztest_od_t *od, int count) 1924{ 1925 int missing = 0; 1926 int error; 1927 1928 ASSERT(_mutex_held(&zd->zd_dirobj_lock)); 1929 1930 for (int i = 0; i < count; i++, od++) { 1931 od->od_object = 0; 1932 error = zap_lookup(zd->zd_os, od->od_dir, od->od_name, 1933 sizeof (uint64_t), 1, &od->od_object); 1934 if (error) { 1935 ASSERT(error == ENOENT); 1936 ASSERT(od->od_object == 0); 1937 missing++; 1938 } else { 1939 dmu_buf_t *db; 1940 ztest_block_tag_t *bbt; 1941 dmu_object_info_t doi; 1942 1943 ASSERT(od->od_object != 0); 1944 ASSERT(missing == 0); /* there should be no gaps */ 1945 1946 ztest_object_lock(zd, od->od_object, RL_READER); 1947 VERIFY3U(0, ==, dmu_bonus_hold(zd->zd_os, 1948 od->od_object, FTAG, &db)); 1949 dmu_object_info_from_db(db, &doi); 1950 bbt = ztest_bt_bonus(db); 1951 ASSERT3U(bbt->bt_magic, ==, BT_MAGIC); 1952 od->od_type = doi.doi_type; 1953 od->od_blocksize = doi.doi_data_block_size; 1954 od->od_gen = bbt->bt_gen; 1955 dmu_buf_rele(db, FTAG); 1956 ztest_object_unlock(zd, od->od_object); 1957 } 1958 } 1959 1960 return (missing); 1961} 1962 1963static int 1964ztest_create(ztest_ds_t *zd, ztest_od_t *od, int count) 1965{ 1966 int missing = 0; 1967 1968 ASSERT(_mutex_held(&zd->zd_dirobj_lock)); 1969 1970 for (int i = 0; i < count; i++, od++) { 1971 if (missing) { 1972 od->od_object = 0; 1973 missing++; 1974 continue; 1975 } 1976 1977 lr_create_t *lr = ztest_lr_alloc(sizeof (*lr), od->od_name); 1978 1979 lr->lr_doid = od->od_dir; 1980 lr->lr_foid = 0; /* 0 to allocate, > 0 to claim */ 1981 lr->lrz_type = od->od_crtype; 1982 lr->lrz_blocksize = od->od_crblocksize; 1983 lr->lrz_ibshift = ztest_random_ibshift(); 1984 lr->lrz_bonustype = DMU_OT_UINT64_OTHER; 1985 lr->lrz_bonuslen = dmu_bonus_max(); 1986 lr->lr_gen = od->od_crgen; 1987 lr->lr_crtime[0] = time(NULL); 1988 1989 if (ztest_replay_create(zd, lr, B_FALSE) != 0) { 1990 ASSERT(missing == 0); 1991 od->od_object = 0; 1992 missing++; 1993 } else { 1994 od->od_object = lr->lr_foid; 1995 od->od_type = od->od_crtype; 1996 od->od_blocksize = od->od_crblocksize; 1997 od->od_gen = od->od_crgen; 1998 ASSERT(od->od_object != 0); 1999 } 2000 2001 ztest_lr_free(lr, sizeof (*lr), od->od_name); 2002 } 2003 2004 return (missing); 2005} 2006 2007static int 2008ztest_remove(ztest_ds_t *zd, ztest_od_t *od, int count) 2009{ 2010 int missing = 0; 2011 int error; 2012 2013 ASSERT(_mutex_held(&zd->zd_dirobj_lock)); 2014 2015 od += count - 1; 2016 2017 for (int i = count - 1; i >= 0; i--, od--) { 2018 if (missing) { 2019 missing++; 2020 continue; 2021 } 2022 2023 /* 2024 * No object was found. 2025 */ 2026 if (od->od_object == 0) 2027 continue; 2028 2029 lr_remove_t *lr = ztest_lr_alloc(sizeof (*lr), od->od_name); 2030 2031 lr->lr_doid = od->od_dir; 2032 2033 if ((error = ztest_replay_remove(zd, lr, B_FALSE)) != 0) { 2034 ASSERT3U(error, ==, ENOSPC); 2035 missing++; 2036 } else { 2037 od->od_object = 0; 2038 } 2039 ztest_lr_free(lr, sizeof (*lr), od->od_name); 2040 } 2041 2042 return (missing); 2043} 2044 2045static int 2046ztest_write(ztest_ds_t *zd, uint64_t object, uint64_t offset, uint64_t size, 2047 void *data) 2048{ 2049 lr_write_t *lr; 2050 int error; 2051 2052 lr = ztest_lr_alloc(sizeof (*lr) + size, NULL); 2053 2054 lr->lr_foid = object; 2055 lr->lr_offset = offset; 2056 lr->lr_length = size; 2057 lr->lr_blkoff = 0; 2058 BP_ZERO(&lr->lr_blkptr); 2059 2060 bcopy(data, lr + 1, size); 2061 2062 error = ztest_replay_write(zd, lr, B_FALSE); 2063 2064 ztest_lr_free(lr, sizeof (*lr) + size, NULL); 2065 2066 return (error); 2067} 2068 2069static int 2070ztest_truncate(ztest_ds_t *zd, uint64_t object, uint64_t offset, uint64_t size) 2071{ 2072 lr_truncate_t *lr; 2073 int error; 2074 2075 lr = ztest_lr_alloc(sizeof (*lr), NULL); 2076 2077 lr->lr_foid = object; 2078 lr->lr_offset = offset; 2079 lr->lr_length = size; 2080 2081 error = ztest_replay_truncate(zd, lr, B_FALSE); 2082 2083 ztest_lr_free(lr, sizeof (*lr), NULL); 2084 2085 return (error); 2086} 2087 2088static int 2089ztest_setattr(ztest_ds_t *zd, uint64_t object) 2090{ 2091 lr_setattr_t *lr; 2092 int error; 2093 2094 lr = ztest_lr_alloc(sizeof (*lr), NULL); 2095 2096 lr->lr_foid = object; 2097 lr->lr_size = 0; 2098 lr->lr_mode = 0; 2099 2100 error = ztest_replay_setattr(zd, lr, B_FALSE); 2101 2102 ztest_lr_free(lr, sizeof (*lr), NULL); 2103 2104 return (error); 2105} 2106 2107static void 2108ztest_prealloc(ztest_ds_t *zd, uint64_t object, uint64_t offset, uint64_t size) 2109{ 2110 objset_t *os = zd->zd_os; 2111 dmu_tx_t *tx; 2112 uint64_t txg; 2113 rl_t *rl; 2114 2115 txg_wait_synced(dmu_objset_pool(os), 0); 2116 2117 ztest_object_lock(zd, object, RL_READER); 2118 rl = ztest_range_lock(zd, object, offset, size, RL_WRITER); 2119 2120 tx = dmu_tx_create(os); 2121 2122 dmu_tx_hold_write(tx, object, offset, size); 2123 2124 txg = ztest_tx_assign(tx, TXG_WAIT, FTAG); 2125 2126 if (txg != 0) { 2127 dmu_prealloc(os, object, offset, size, tx); 2128 dmu_tx_commit(tx); 2129 txg_wait_synced(dmu_objset_pool(os), txg); 2130 } else { 2131 (void) dmu_free_long_range(os, object, offset, size); 2132 } 2133 2134 ztest_range_unlock(rl); 2135 ztest_object_unlock(zd, object); 2136} 2137 2138static void 2139ztest_io(ztest_ds_t *zd, uint64_t object, uint64_t offset) 2140{ 2141 int err; 2142 ztest_block_tag_t wbt; 2143 dmu_object_info_t doi; 2144 enum ztest_io_type io_type; 2145 uint64_t blocksize; 2146 void *data; 2147 2148 VERIFY(dmu_object_info(zd->zd_os, object, &doi) == 0); 2149 blocksize = doi.doi_data_block_size; 2150 data = umem_alloc(blocksize, UMEM_NOFAIL); 2151 2152 /* 2153 * Pick an i/o type at random, biased toward writing block tags. 2154 */ 2155 io_type = ztest_random(ZTEST_IO_TYPES); 2156 if (ztest_random(2) == 0) 2157 io_type = ZTEST_IO_WRITE_TAG; 2158 2159 (void) rw_rdlock(&zd->zd_zilog_lock); 2160 2161 switch (io_type) { 2162 2163 case ZTEST_IO_WRITE_TAG: 2164 ztest_bt_generate(&wbt, zd->zd_os, object, offset, 0, 0, 0); 2165 (void) ztest_write(zd, object, offset, sizeof (wbt), &wbt); 2166 break; 2167 2168 case ZTEST_IO_WRITE_PATTERN: 2169 (void) memset(data, 'a' + (object + offset) % 5, blocksize); 2170 if (ztest_random(2) == 0) { 2171 /* 2172 * Induce fletcher2 collisions to ensure that 2173 * zio_ddt_collision() detects and resolves them 2174 * when using fletcher2-verify for deduplication. 2175 */ 2176 ((uint64_t *)data)[0] ^= 1ULL << 63; 2177 ((uint64_t *)data)[4] ^= 1ULL << 63; 2178 } 2179 (void) ztest_write(zd, object, offset, blocksize, data); 2180 break; 2181 2182 case ZTEST_IO_WRITE_ZEROES: 2183 bzero(data, blocksize); 2184 (void) ztest_write(zd, object, offset, blocksize, data); 2185 break; 2186 2187 case ZTEST_IO_TRUNCATE: 2188 (void) ztest_truncate(zd, object, offset, blocksize); 2189 break; 2190 2191 case ZTEST_IO_SETATTR: 2192 (void) ztest_setattr(zd, object); 2193 break; 2194 2195 case ZTEST_IO_REWRITE: 2196 (void) rw_rdlock(&ztest_name_lock); 2197 err = ztest_dsl_prop_set_uint64(zd->zd_name, 2198 ZFS_PROP_CHECKSUM, spa_dedup_checksum(ztest_spa), 2199 B_FALSE); 2200 VERIFY(err == 0 || err == ENOSPC); 2201 err = ztest_dsl_prop_set_uint64(zd->zd_name, 2202 ZFS_PROP_COMPRESSION, 2203 ztest_random_dsl_prop(ZFS_PROP_COMPRESSION), 2204 B_FALSE); 2205 VERIFY(err == 0 || err == ENOSPC); 2206 (void) rw_unlock(&ztest_name_lock); 2207 2208 VERIFY0(dmu_read(zd->zd_os, object, offset, blocksize, data, 2209 DMU_READ_NO_PREFETCH)); 2210 2211 (void) ztest_write(zd, object, offset, blocksize, data); 2212 break; 2213 } 2214 2215 (void) rw_unlock(&zd->zd_zilog_lock); 2216 2217 umem_free(data, blocksize); 2218} 2219 2220/* 2221 * Initialize an object description template. 2222 */ 2223static void 2224ztest_od_init(ztest_od_t *od, uint64_t id, char *tag, uint64_t index, 2225 dmu_object_type_t type, uint64_t blocksize, uint64_t gen) 2226{ 2227 od->od_dir = ZTEST_DIROBJ; 2228 od->od_object = 0; 2229 2230 od->od_crtype = type; 2231 od->od_crblocksize = blocksize ? blocksize : ztest_random_blocksize(); 2232 od->od_crgen = gen; 2233 2234 od->od_type = DMU_OT_NONE; 2235 od->od_blocksize = 0; 2236 od->od_gen = 0; 2237 2238 (void) snprintf(od->od_name, sizeof (od->od_name), "%s(%lld)[%llu]", 2239 tag, (int64_t)id, index); 2240} 2241 2242/* 2243 * Lookup or create the objects for a test using the od template. 2244 * If the objects do not all exist, or if 'remove' is specified, 2245 * remove any existing objects and create new ones. Otherwise, 2246 * use the existing objects. 2247 */ 2248static int 2249ztest_object_init(ztest_ds_t *zd, ztest_od_t *od, size_t size, boolean_t remove) 2250{ 2251 int count = size / sizeof (*od); 2252 int rv = 0; 2253 2254 VERIFY(mutex_lock(&zd->zd_dirobj_lock) == 0); 2255 if ((ztest_lookup(zd, od, count) != 0 || remove) && 2256 (ztest_remove(zd, od, count) != 0 || 2257 ztest_create(zd, od, count) != 0)) 2258 rv = -1; 2259 zd->zd_od = od; 2260 VERIFY(mutex_unlock(&zd->zd_dirobj_lock) == 0); 2261 2262 return (rv); 2263} 2264 2265/* ARGSUSED */ 2266void 2267ztest_zil_commit(ztest_ds_t *zd, uint64_t id) 2268{ 2269 zilog_t *zilog = zd->zd_zilog; 2270 2271 (void) rw_rdlock(&zd->zd_zilog_lock); 2272 2273 zil_commit(zilog, ztest_random(ZTEST_OBJECTS)); 2274 2275 /* 2276 * Remember the committed values in zd, which is in parent/child 2277 * shared memory. If we die, the next iteration of ztest_run() 2278 * will verify that the log really does contain this record. 2279 */ 2280 mutex_enter(&zilog->zl_lock); 2281 ASSERT(zd->zd_shared != NULL); 2282 ASSERT3U(zd->zd_shared->zd_seq, <=, zilog->zl_commit_lr_seq); 2283 zd->zd_shared->zd_seq = zilog->zl_commit_lr_seq; 2284 mutex_exit(&zilog->zl_lock); 2285 2286 (void) rw_unlock(&zd->zd_zilog_lock); 2287} 2288 2289/* 2290 * This function is designed to simulate the operations that occur during a 2291 * mount/unmount operation. We hold the dataset across these operations in an 2292 * attempt to expose any implicit assumptions about ZIL management. 2293 */ 2294/* ARGSUSED */ 2295void 2296ztest_zil_remount(ztest_ds_t *zd, uint64_t id) 2297{ 2298 objset_t *os = zd->zd_os; 2299 2300 /* 2301 * We grab the zd_dirobj_lock to ensure that no other thread is 2302 * updating the zil (i.e. adding in-memory log records) and the 2303 * zd_zilog_lock to block any I/O. 2304 */ 2305 VERIFY0(mutex_lock(&zd->zd_dirobj_lock)); 2306 (void) rw_wrlock(&zd->zd_zilog_lock); 2307 2308 /* zfsvfs_teardown() */ 2309 zil_close(zd->zd_zilog); 2310 2311 /* zfsvfs_setup() */ 2312 VERIFY(zil_open(os, ztest_get_data) == zd->zd_zilog); 2313 zil_replay(os, zd, ztest_replay_vector); 2314 2315 (void) rw_unlock(&zd->zd_zilog_lock); 2316 VERIFY(mutex_unlock(&zd->zd_dirobj_lock) == 0); 2317} 2318 2319/* 2320 * Verify that we can't destroy an active pool, create an existing pool, 2321 * or create a pool with a bad vdev spec. 2322 */ 2323/* ARGSUSED */ 2324void 2325ztest_spa_create_destroy(ztest_ds_t *zd, uint64_t id) 2326{ 2327 ztest_shared_opts_t *zo = &ztest_opts; 2328 spa_t *spa; 2329 nvlist_t *nvroot; 2330 2331 /* 2332 * Attempt to create using a bad file. 2333 */ 2334 nvroot = make_vdev_root("/dev/bogus", NULL, NULL, 0, 0, 0, 0, 0, 1); 2335 VERIFY3U(ENOENT, ==, 2336 spa_create("ztest_bad_file", nvroot, NULL, NULL)); 2337 nvlist_free(nvroot); 2338 2339 /* 2340 * Attempt to create using a bad mirror. 2341 */ 2342 nvroot = make_vdev_root("/dev/bogus", NULL, NULL, 0, 0, 0, 0, 2, 1); 2343 VERIFY3U(ENOENT, ==, 2344 spa_create("ztest_bad_mirror", nvroot, NULL, NULL)); 2345 nvlist_free(nvroot); 2346 2347 /* 2348 * Attempt to create an existing pool. It shouldn't matter 2349 * what's in the nvroot; we should fail with EEXIST. 2350 */ 2351 (void) rw_rdlock(&ztest_name_lock); 2352 nvroot = make_vdev_root("/dev/bogus", NULL, NULL, 0, 0, 0, 0, 0, 1); 2353 VERIFY3U(EEXIST, ==, spa_create(zo->zo_pool, nvroot, NULL, NULL)); 2354 nvlist_free(nvroot); 2355 VERIFY3U(0, ==, spa_open(zo->zo_pool, &spa, FTAG)); 2356 VERIFY3U(EBUSY, ==, spa_destroy(zo->zo_pool)); 2357 spa_close(spa, FTAG); 2358 2359 (void) rw_unlock(&ztest_name_lock); 2360} 2361 2362/* ARGSUSED */ 2363void 2364ztest_spa_upgrade(ztest_ds_t *zd, uint64_t id) 2365{ 2366 spa_t *spa; 2367 uint64_t initial_version = SPA_VERSION_INITIAL; 2368 uint64_t version, newversion; 2369 nvlist_t *nvroot, *props; 2370 char *name; 2371 2372 VERIFY0(mutex_lock(&ztest_vdev_lock)); 2373 name = kmem_asprintf("%s_upgrade", ztest_opts.zo_pool); 2374 2375 /* 2376 * Clean up from previous runs. 2377 */ 2378 (void) spa_destroy(name); 2379 2380 nvroot = make_vdev_root(NULL, NULL, name, ztest_opts.zo_vdev_size, 0, 2381 0, ztest_opts.zo_raidz, ztest_opts.zo_mirrors, 1); 2382 2383 /* 2384 * If we're configuring a RAIDZ device then make sure that the 2385 * the initial version is capable of supporting that feature. 2386 */ 2387 switch (ztest_opts.zo_raidz_parity) { 2388 case 0: 2389 case 1: 2390 initial_version = SPA_VERSION_INITIAL; 2391 break; 2392 case 2: 2393 initial_version = SPA_VERSION_RAIDZ2; 2394 break; 2395 case 3: 2396 initial_version = SPA_VERSION_RAIDZ3; 2397 break; 2398 } 2399 2400 /* 2401 * Create a pool with a spa version that can be upgraded. Pick 2402 * a value between initial_version and SPA_VERSION_BEFORE_FEATURES. 2403 */ 2404 do { 2405 version = ztest_random_spa_version(initial_version); 2406 } while (version > SPA_VERSION_BEFORE_FEATURES); 2407 2408 props = fnvlist_alloc(); 2409 fnvlist_add_uint64(props, 2410 zpool_prop_to_name(ZPOOL_PROP_VERSION), version); 2411 VERIFY0(spa_create(name, nvroot, props, NULL)); 2412 fnvlist_free(nvroot); 2413 fnvlist_free(props); 2414 2415 VERIFY0(spa_open(name, &spa, FTAG)); 2416 VERIFY3U(spa_version(spa), ==, version); 2417 newversion = ztest_random_spa_version(version + 1); 2418 2419 if (ztest_opts.zo_verbose >= 4) { 2420 (void) printf("upgrading spa version from %llu to %llu\n", 2421 (u_longlong_t)version, (u_longlong_t)newversion); 2422 } 2423 2424 spa_upgrade(spa, newversion); 2425 VERIFY3U(spa_version(spa), >, version); 2426 VERIFY3U(spa_version(spa), ==, fnvlist_lookup_uint64(spa->spa_config, 2427 zpool_prop_to_name(ZPOOL_PROP_VERSION))); 2428 spa_close(spa, FTAG); 2429 2430 strfree(name); 2431 VERIFY0(mutex_unlock(&ztest_vdev_lock)); 2432} 2433 2434static vdev_t * 2435vdev_lookup_by_path(vdev_t *vd, const char *path) 2436{ 2437 vdev_t *mvd; 2438 2439 if (vd->vdev_path != NULL && strcmp(path, vd->vdev_path) == 0) 2440 return (vd); 2441 2442 for (int c = 0; c < vd->vdev_children; c++) 2443 if ((mvd = vdev_lookup_by_path(vd->vdev_child[c], path)) != 2444 NULL) 2445 return (mvd); 2446 2447 return (NULL); 2448} 2449 2450/* 2451 * Find the first available hole which can be used as a top-level. 2452 */ 2453int 2454find_vdev_hole(spa_t *spa) 2455{ 2456 vdev_t *rvd = spa->spa_root_vdev; 2457 int c; 2458 2459 ASSERT(spa_config_held(spa, SCL_VDEV, RW_READER) == SCL_VDEV); 2460 2461 for (c = 0; c < rvd->vdev_children; c++) { 2462 vdev_t *cvd = rvd->vdev_child[c]; 2463 2464 if (cvd->vdev_ishole) 2465 break; 2466 } 2467 return (c); 2468} 2469 2470/* 2471 * Verify that vdev_add() works as expected. 2472 */ 2473/* ARGSUSED */ 2474void 2475ztest_vdev_add_remove(ztest_ds_t *zd, uint64_t id) 2476{ 2477 ztest_shared_t *zs = ztest_shared; 2478 spa_t *spa = ztest_spa; 2479 uint64_t leaves; 2480 uint64_t guid; 2481 nvlist_t *nvroot; 2482 int error; 2483 2484 VERIFY(mutex_lock(&ztest_vdev_lock) == 0); 2485 leaves = MAX(zs->zs_mirrors + zs->zs_splits, 1) * ztest_opts.zo_raidz; 2486 2487 spa_config_enter(spa, SCL_VDEV, FTAG, RW_READER); 2488 2489 ztest_shared->zs_vdev_next_leaf = find_vdev_hole(spa) * leaves; 2490 2491 /* 2492 * If we have slogs then remove them 1/4 of the time. 2493 */ 2494 if (spa_has_slogs(spa) && ztest_random(4) == 0) { 2495 /* 2496 * Grab the guid from the head of the log class rotor. 2497 */ 2498 guid = spa_log_class(spa)->mc_rotor->mg_vd->vdev_guid; 2499 2500 spa_config_exit(spa, SCL_VDEV, FTAG); 2501 2502 /* 2503 * We have to grab the zs_name_lock as writer to 2504 * prevent a race between removing a slog (dmu_objset_find) 2505 * and destroying a dataset. Removing the slog will 2506 * grab a reference on the dataset which may cause 2507 * dmu_objset_destroy() to fail with EBUSY thus 2508 * leaving the dataset in an inconsistent state. 2509 */ 2510 VERIFY(rw_wrlock(&ztest_name_lock) == 0); 2511 error = spa_vdev_remove(spa, guid, B_FALSE); 2512 VERIFY(rw_unlock(&ztest_name_lock) == 0); 2513 2514 if (error && error != EEXIST) 2515 fatal(0, "spa_vdev_remove() = %d", error); 2516 } else { 2517 spa_config_exit(spa, SCL_VDEV, FTAG); 2518 2519 /* 2520 * Make 1/4 of the devices be log devices. 2521 */ 2522 nvroot = make_vdev_root(NULL, NULL, NULL, 2523 ztest_opts.zo_vdev_size, 0, 2524 ztest_random(4) == 0, ztest_opts.zo_raidz, 2525 zs->zs_mirrors, 1); 2526 2527 error = spa_vdev_add(spa, nvroot); 2528 nvlist_free(nvroot); 2529 2530 if (error == ENOSPC) 2531 ztest_record_enospc("spa_vdev_add"); 2532 else if (error != 0) 2533 fatal(0, "spa_vdev_add() = %d", error); 2534 } 2535 2536 VERIFY(mutex_unlock(&ztest_vdev_lock) == 0); 2537} 2538 2539/* 2540 * Verify that adding/removing aux devices (l2arc, hot spare) works as expected. 2541 */ 2542/* ARGSUSED */ 2543void 2544ztest_vdev_aux_add_remove(ztest_ds_t *zd, uint64_t id) 2545{ 2546 ztest_shared_t *zs = ztest_shared; 2547 spa_t *spa = ztest_spa; 2548 vdev_t *rvd = spa->spa_root_vdev; 2549 spa_aux_vdev_t *sav; 2550 char *aux; 2551 uint64_t guid = 0; 2552 int error; 2553 2554 if (ztest_random(2) == 0) { 2555 sav = &spa->spa_spares; 2556 aux = ZPOOL_CONFIG_SPARES; 2557 } else { 2558 sav = &spa->spa_l2cache; 2559 aux = ZPOOL_CONFIG_L2CACHE; 2560 } 2561 2562 VERIFY(mutex_lock(&ztest_vdev_lock) == 0); 2563 2564 spa_config_enter(spa, SCL_VDEV, FTAG, RW_READER); 2565 2566 if (sav->sav_count != 0 && ztest_random(4) == 0) { 2567 /* 2568 * Pick a random device to remove. 2569 */ 2570 guid = sav->sav_vdevs[ztest_random(sav->sav_count)]->vdev_guid; 2571 } else { 2572 /* 2573 * Find an unused device we can add. 2574 */ 2575 zs->zs_vdev_aux = 0; 2576 for (;;) { 2577 char path[MAXPATHLEN]; 2578 int c; 2579 (void) snprintf(path, sizeof (path), ztest_aux_template, 2580 ztest_opts.zo_dir, ztest_opts.zo_pool, aux, 2581 zs->zs_vdev_aux); 2582 for (c = 0; c < sav->sav_count; c++) 2583 if (strcmp(sav->sav_vdevs[c]->vdev_path, 2584 path) == 0) 2585 break; 2586 if (c == sav->sav_count && 2587 vdev_lookup_by_path(rvd, path) == NULL) 2588 break; 2589 zs->zs_vdev_aux++; 2590 } 2591 } 2592 2593 spa_config_exit(spa, SCL_VDEV, FTAG); 2594 2595 if (guid == 0) { 2596 /* 2597 * Add a new device. 2598 */ 2599 nvlist_t *nvroot = make_vdev_root(NULL, aux, NULL, 2600 (ztest_opts.zo_vdev_size * 5) / 4, 0, 0, 0, 0, 1); 2601 error = spa_vdev_add(spa, nvroot); 2602 if (error != 0) 2603 fatal(0, "spa_vdev_add(%p) = %d", nvroot, error); 2604 nvlist_free(nvroot); 2605 } else { 2606 /* 2607 * Remove an existing device. Sometimes, dirty its 2608 * vdev state first to make sure we handle removal 2609 * of devices that have pending state changes. 2610 */ 2611 if (ztest_random(2) == 0) 2612 (void) vdev_online(spa, guid, 0, NULL); 2613 2614 error = spa_vdev_remove(spa, guid, B_FALSE); 2615 if (error != 0 && error != EBUSY) 2616 fatal(0, "spa_vdev_remove(%llu) = %d", guid, error); 2617 } 2618 2619 VERIFY(mutex_unlock(&ztest_vdev_lock) == 0); 2620} 2621 2622/* 2623 * split a pool if it has mirror tlvdevs 2624 */ 2625/* ARGSUSED */ 2626void 2627ztest_split_pool(ztest_ds_t *zd, uint64_t id) 2628{ 2629 ztest_shared_t *zs = ztest_shared; 2630 spa_t *spa = ztest_spa; 2631 vdev_t *rvd = spa->spa_root_vdev; 2632 nvlist_t *tree, **child, *config, *split, **schild; 2633 uint_t c, children, schildren = 0, lastlogid = 0; 2634 int error = 0; 2635 2636 VERIFY(mutex_lock(&ztest_vdev_lock) == 0); 2637 2638 /* ensure we have a useable config; mirrors of raidz aren't supported */ 2639 if (zs->zs_mirrors < 3 || ztest_opts.zo_raidz > 1) { 2640 VERIFY(mutex_unlock(&ztest_vdev_lock) == 0); 2641 return; 2642 } 2643 2644 /* clean up the old pool, if any */ 2645 (void) spa_destroy("splitp"); 2646 2647 spa_config_enter(spa, SCL_VDEV, FTAG, RW_READER); 2648 2649 /* generate a config from the existing config */ 2650 mutex_enter(&spa->spa_props_lock); 2651 VERIFY(nvlist_lookup_nvlist(spa->spa_config, ZPOOL_CONFIG_VDEV_TREE, 2652 &tree) == 0); 2653 mutex_exit(&spa->spa_props_lock); 2654 2655 VERIFY(nvlist_lookup_nvlist_array(tree, ZPOOL_CONFIG_CHILDREN, &child, 2656 &children) == 0); 2657 2658 schild = malloc(rvd->vdev_children * sizeof (nvlist_t *)); 2659 for (c = 0; c < children; c++) { 2660 vdev_t *tvd = rvd->vdev_child[c]; 2661 nvlist_t **mchild; 2662 uint_t mchildren; 2663 2664 if (tvd->vdev_islog || tvd->vdev_ops == &vdev_hole_ops) { 2665 VERIFY(nvlist_alloc(&schild[schildren], NV_UNIQUE_NAME, 2666 0) == 0); 2667 VERIFY(nvlist_add_string(schild[schildren], 2668 ZPOOL_CONFIG_TYPE, VDEV_TYPE_HOLE) == 0); 2669 VERIFY(nvlist_add_uint64(schild[schildren], 2670 ZPOOL_CONFIG_IS_HOLE, 1) == 0); 2671 if (lastlogid == 0) 2672 lastlogid = schildren; 2673 ++schildren; 2674 continue; 2675 } 2676 lastlogid = 0; 2677 VERIFY(nvlist_lookup_nvlist_array(child[c], 2678 ZPOOL_CONFIG_CHILDREN, &mchild, &mchildren) == 0); 2679 VERIFY(nvlist_dup(mchild[0], &schild[schildren++], 0) == 0); 2680 } 2681 2682 /* OK, create a config that can be used to split */ 2683 VERIFY(nvlist_alloc(&split, NV_UNIQUE_NAME, 0) == 0); 2684 VERIFY(nvlist_add_string(split, ZPOOL_CONFIG_TYPE, 2685 VDEV_TYPE_ROOT) == 0); 2686 VERIFY(nvlist_add_nvlist_array(split, ZPOOL_CONFIG_CHILDREN, schild, 2687 lastlogid != 0 ? lastlogid : schildren) == 0); 2688 2689 VERIFY(nvlist_alloc(&config, NV_UNIQUE_NAME, 0) == 0); 2690 VERIFY(nvlist_add_nvlist(config, ZPOOL_CONFIG_VDEV_TREE, split) == 0); 2691 2692 for (c = 0; c < schildren; c++) 2693 nvlist_free(schild[c]); 2694 free(schild); 2695 nvlist_free(split); 2696 2697 spa_config_exit(spa, SCL_VDEV, FTAG); 2698 2699 (void) rw_wrlock(&ztest_name_lock); 2700 error = spa_vdev_split_mirror(spa, "splitp", config, NULL, B_FALSE); 2701 (void) rw_unlock(&ztest_name_lock); 2702 2703 nvlist_free(config); 2704 2705 if (error == 0) { 2706 (void) printf("successful split - results:\n"); 2707 mutex_enter(&spa_namespace_lock); 2708 show_pool_stats(spa); 2709 show_pool_stats(spa_lookup("splitp")); 2710 mutex_exit(&spa_namespace_lock); 2711 ++zs->zs_splits; 2712 --zs->zs_mirrors; 2713 } 2714 VERIFY(mutex_unlock(&ztest_vdev_lock) == 0); 2715 2716} 2717 2718/* 2719 * Verify that we can attach and detach devices. 2720 */ 2721/* ARGSUSED */ 2722void 2723ztest_vdev_attach_detach(ztest_ds_t *zd, uint64_t id) 2724{ 2725 ztest_shared_t *zs = ztest_shared; 2726 spa_t *spa = ztest_spa; 2727 spa_aux_vdev_t *sav = &spa->spa_spares; 2728 vdev_t *rvd = spa->spa_root_vdev; 2729 vdev_t *oldvd, *newvd, *pvd; 2730 nvlist_t *root; 2731 uint64_t leaves; 2732 uint64_t leaf, top; 2733 uint64_t ashift = ztest_get_ashift(); 2734 uint64_t oldguid, pguid; 2735 size_t oldsize, newsize; 2736 char oldpath[MAXPATHLEN], newpath[MAXPATHLEN]; 2737 int replacing; 2738 int oldvd_has_siblings = B_FALSE; 2739 int newvd_is_spare = B_FALSE; 2740 int oldvd_is_log; 2741 int error, expected_error; 2742 2743 VERIFY(mutex_lock(&ztest_vdev_lock) == 0); 2744 leaves = MAX(zs->zs_mirrors, 1) * ztest_opts.zo_raidz; 2745 2746 spa_config_enter(spa, SCL_VDEV, FTAG, RW_READER); 2747 2748 /* 2749 * Decide whether to do an attach or a replace. 2750 */ 2751 replacing = ztest_random(2); 2752 2753 /* 2754 * Pick a random top-level vdev. 2755 */ 2756 top = ztest_random_vdev_top(spa, B_TRUE); 2757 2758 /* 2759 * Pick a random leaf within it. 2760 */ 2761 leaf = ztest_random(leaves); 2762 2763 /* 2764 * Locate this vdev. 2765 */ 2766 oldvd = rvd->vdev_child[top]; 2767 if (zs->zs_mirrors >= 1) { 2768 ASSERT(oldvd->vdev_ops == &vdev_mirror_ops); 2769 ASSERT(oldvd->vdev_children >= zs->zs_mirrors); 2770 oldvd = oldvd->vdev_child[leaf / ztest_opts.zo_raidz]; 2771 } 2772 if (ztest_opts.zo_raidz > 1) { 2773 ASSERT(oldvd->vdev_ops == &vdev_raidz_ops); 2774 ASSERT(oldvd->vdev_children == ztest_opts.zo_raidz); 2775 oldvd = oldvd->vdev_child[leaf % ztest_opts.zo_raidz]; 2776 } 2777 2778 /* 2779 * If we're already doing an attach or replace, oldvd may be a 2780 * mirror vdev -- in which case, pick a random child. 2781 */ 2782 while (oldvd->vdev_children != 0) { 2783 oldvd_has_siblings = B_TRUE; 2784 ASSERT(oldvd->vdev_children >= 2); 2785 oldvd = oldvd->vdev_child[ztest_random(oldvd->vdev_children)]; 2786 } 2787 2788 oldguid = oldvd->vdev_guid; 2789 oldsize = vdev_get_min_asize(oldvd); 2790 oldvd_is_log = oldvd->vdev_top->vdev_islog; 2791 (void) strcpy(oldpath, oldvd->vdev_path); 2792 pvd = oldvd->vdev_parent; 2793 pguid = pvd->vdev_guid; 2794 2795 /* 2796 * If oldvd has siblings, then half of the time, detach it. 2797 */ 2798 if (oldvd_has_siblings && ztest_random(2) == 0) { 2799 spa_config_exit(spa, SCL_VDEV, FTAG); 2800 error = spa_vdev_detach(spa, oldguid, pguid, B_FALSE); 2801 if (error != 0 && error != ENODEV && error != EBUSY && 2802 error != ENOTSUP) 2803 fatal(0, "detach (%s) returned %d", oldpath, error); 2804 VERIFY(mutex_unlock(&ztest_vdev_lock) == 0); 2805 return; 2806 } 2807 2808 /* 2809 * For the new vdev, choose with equal probability between the two 2810 * standard paths (ending in either 'a' or 'b') or a random hot spare. 2811 */ 2812 if (sav->sav_count != 0 && ztest_random(3) == 0) { 2813 newvd = sav->sav_vdevs[ztest_random(sav->sav_count)]; 2814 newvd_is_spare = B_TRUE; 2815 (void) strcpy(newpath, newvd->vdev_path); 2816 } else { 2817 (void) snprintf(newpath, sizeof (newpath), ztest_dev_template, 2818 ztest_opts.zo_dir, ztest_opts.zo_pool, 2819 top * leaves + leaf); 2820 if (ztest_random(2) == 0) 2821 newpath[strlen(newpath) - 1] = 'b'; 2822 newvd = vdev_lookup_by_path(rvd, newpath); 2823 } 2824 2825 if (newvd) { 2826 newsize = vdev_get_min_asize(newvd); 2827 } else { 2828 /* 2829 * Make newsize a little bigger or smaller than oldsize. 2830 * If it's smaller, the attach should fail. 2831 * If it's larger, and we're doing a replace, 2832 * we should get dynamic LUN growth when we're done. 2833 */ 2834 newsize = 10 * oldsize / (9 + ztest_random(3)); 2835 } 2836 2837 /* 2838 * If pvd is not a mirror or root, the attach should fail with ENOTSUP, 2839 * unless it's a replace; in that case any non-replacing parent is OK. 2840 * 2841 * If newvd is already part of the pool, it should fail with EBUSY. 2842 * 2843 * If newvd is too small, it should fail with EOVERFLOW. 2844 */ 2845 if (pvd->vdev_ops != &vdev_mirror_ops && 2846 pvd->vdev_ops != &vdev_root_ops && (!replacing || 2847 pvd->vdev_ops == &vdev_replacing_ops || 2848 pvd->vdev_ops == &vdev_spare_ops)) 2849 expected_error = ENOTSUP; 2850 else if (newvd_is_spare && (!replacing || oldvd_is_log)) 2851 expected_error = ENOTSUP; 2852 else if (newvd == oldvd) 2853 expected_error = replacing ? 0 : EBUSY; 2854 else if (vdev_lookup_by_path(rvd, newpath) != NULL) 2855 expected_error = EBUSY; 2856 else if (newsize < oldsize) 2857 expected_error = EOVERFLOW; 2858 else if (ashift > oldvd->vdev_top->vdev_ashift) 2859 expected_error = EDOM; 2860 else 2861 expected_error = 0; 2862 2863 spa_config_exit(spa, SCL_VDEV, FTAG); 2864 2865 /* 2866 * Build the nvlist describing newpath. 2867 */ 2868 root = make_vdev_root(newpath, NULL, NULL, newvd == NULL ? newsize : 0, 2869 ashift, 0, 0, 0, 1); 2870 2871 error = spa_vdev_attach(spa, oldguid, root, replacing); 2872 2873 nvlist_free(root); 2874 2875 /* 2876 * If our parent was the replacing vdev, but the replace completed, 2877 * then instead of failing with ENOTSUP we may either succeed, 2878 * fail with ENODEV, or fail with EOVERFLOW. 2879 */ 2880 if (expected_error == ENOTSUP && 2881 (error == 0 || error == ENODEV || error == EOVERFLOW)) 2882 expected_error = error; 2883 2884 /* 2885 * If someone grew the LUN, the replacement may be too small. 2886 */ 2887 if (error == EOVERFLOW || error == EBUSY) 2888 expected_error = error; 2889 2890 /* XXX workaround 6690467 */ 2891 if (error != expected_error && expected_error != EBUSY) { 2892 fatal(0, "attach (%s %llu, %s %llu, %d) " 2893 "returned %d, expected %d", 2894 oldpath, (longlong_t)oldsize, newpath, 2895 (longlong_t)newsize, replacing, error, expected_error); 2896 } 2897 2898 VERIFY(mutex_unlock(&ztest_vdev_lock) == 0); 2899} 2900 2901/* 2902 * Callback function which expands the physical size of the vdev. 2903 */ 2904vdev_t * 2905grow_vdev(vdev_t *vd, void *arg) 2906{ 2907 spa_t *spa = vd->vdev_spa; 2908 size_t *newsize = arg; 2909 size_t fsize; 2910 int fd; 2911 2912 ASSERT(spa_config_held(spa, SCL_STATE, RW_READER) == SCL_STATE); 2913 ASSERT(vd->vdev_ops->vdev_op_leaf); 2914 2915 if ((fd = open(vd->vdev_path, O_RDWR)) == -1) 2916 return (vd); 2917 2918 fsize = lseek(fd, 0, SEEK_END); 2919 (void) ftruncate(fd, *newsize); 2920 2921 if (ztest_opts.zo_verbose >= 6) { 2922 (void) printf("%s grew from %lu to %lu bytes\n", 2923 vd->vdev_path, (ulong_t)fsize, (ulong_t)*newsize); 2924 } 2925 (void) close(fd); 2926 return (NULL); 2927} 2928 2929/* 2930 * Callback function which expands a given vdev by calling vdev_online(). 2931 */ 2932/* ARGSUSED */ 2933vdev_t * 2934online_vdev(vdev_t *vd, void *arg) 2935{ 2936 spa_t *spa = vd->vdev_spa; 2937 vdev_t *tvd = vd->vdev_top; 2938 uint64_t guid = vd->vdev_guid; 2939 uint64_t generation = spa->spa_config_generation + 1; 2940 vdev_state_t newstate = VDEV_STATE_UNKNOWN; 2941 int error; 2942 2943 ASSERT(spa_config_held(spa, SCL_STATE, RW_READER) == SCL_STATE); 2944 ASSERT(vd->vdev_ops->vdev_op_leaf); 2945 2946 /* Calling vdev_online will initialize the new metaslabs */ 2947 spa_config_exit(spa, SCL_STATE, spa); 2948 error = vdev_online(spa, guid, ZFS_ONLINE_EXPAND, &newstate); 2949 spa_config_enter(spa, SCL_STATE, spa, RW_READER); 2950 2951 /* 2952 * If vdev_online returned an error or the underlying vdev_open 2953 * failed then we abort the expand. The only way to know that 2954 * vdev_open fails is by checking the returned newstate. 2955 */ 2956 if (error || newstate != VDEV_STATE_HEALTHY) { 2957 if (ztest_opts.zo_verbose >= 5) { 2958 (void) printf("Unable to expand vdev, state %llu, " 2959 "error %d\n", (u_longlong_t)newstate, error); 2960 } 2961 return (vd); 2962 } 2963 ASSERT3U(newstate, ==, VDEV_STATE_HEALTHY); 2964 2965 /* 2966 * Since we dropped the lock we need to ensure that we're 2967 * still talking to the original vdev. It's possible this 2968 * vdev may have been detached/replaced while we were 2969 * trying to online it. 2970 */ 2971 if (generation != spa->spa_config_generation) { 2972 if (ztest_opts.zo_verbose >= 5) { 2973 (void) printf("vdev configuration has changed, " 2974 "guid %llu, state %llu, expected gen %llu, " 2975 "got gen %llu\n", 2976 (u_longlong_t)guid, 2977 (u_longlong_t)tvd->vdev_state, 2978 (u_longlong_t)generation, 2979 (u_longlong_t)spa->spa_config_generation); 2980 } 2981 return (vd); 2982 } 2983 return (NULL); 2984} 2985 2986/* 2987 * Traverse the vdev tree calling the supplied function. 2988 * We continue to walk the tree until we either have walked all 2989 * children or we receive a non-NULL return from the callback. 2990 * If a NULL callback is passed, then we just return back the first 2991 * leaf vdev we encounter. 2992 */ 2993vdev_t * 2994vdev_walk_tree(vdev_t *vd, vdev_t *(*func)(vdev_t *, void *), void *arg) 2995{ 2996 if (vd->vdev_ops->vdev_op_leaf) { 2997 if (func == NULL) 2998 return (vd); 2999 else 3000 return (func(vd, arg)); 3001 } 3002 3003 for (uint_t c = 0; c < vd->vdev_children; c++) { 3004 vdev_t *cvd = vd->vdev_child[c]; 3005 if ((cvd = vdev_walk_tree(cvd, func, arg)) != NULL) 3006 return (cvd); 3007 } 3008 return (NULL); 3009} 3010 3011/* 3012 * Verify that dynamic LUN growth works as expected. 3013 */ 3014/* ARGSUSED */ 3015void 3016ztest_vdev_LUN_growth(ztest_ds_t *zd, uint64_t id) 3017{ 3018 spa_t *spa = ztest_spa; 3019 vdev_t *vd, *tvd; 3020 metaslab_class_t *mc; 3021 metaslab_group_t *mg; 3022 size_t psize, newsize; 3023 uint64_t top; 3024 uint64_t old_class_space, new_class_space, old_ms_count, new_ms_count; 3025 3026 VERIFY(mutex_lock(&ztest_vdev_lock) == 0); 3027 spa_config_enter(spa, SCL_STATE, spa, RW_READER); 3028 3029 top = ztest_random_vdev_top(spa, B_TRUE); 3030 3031 tvd = spa->spa_root_vdev->vdev_child[top]; 3032 mg = tvd->vdev_mg; 3033 mc = mg->mg_class; 3034 old_ms_count = tvd->vdev_ms_count; 3035 old_class_space = metaslab_class_get_space(mc); 3036 3037 /* 3038 * Determine the size of the first leaf vdev associated with 3039 * our top-level device. 3040 */ 3041 vd = vdev_walk_tree(tvd, NULL, NULL); 3042 ASSERT3P(vd, !=, NULL); 3043 ASSERT(vd->vdev_ops->vdev_op_leaf); 3044 3045 psize = vd->vdev_psize; 3046 3047 /* 3048 * We only try to expand the vdev if it's healthy, less than 4x its 3049 * original size, and it has a valid psize. 3050 */ 3051 if (tvd->vdev_state != VDEV_STATE_HEALTHY || 3052 psize == 0 || psize >= 4 * ztest_opts.zo_vdev_size) { 3053 spa_config_exit(spa, SCL_STATE, spa); 3054 VERIFY(mutex_unlock(&ztest_vdev_lock) == 0); 3055 return; 3056 } 3057 ASSERT(psize > 0); 3058 newsize = psize + psize / 8; 3059 ASSERT3U(newsize, >, psize); 3060 3061 if (ztest_opts.zo_verbose >= 6) { 3062 (void) printf("Expanding LUN %s from %lu to %lu\n", 3063 vd->vdev_path, (ulong_t)psize, (ulong_t)newsize); 3064 } 3065 3066 /* 3067 * Growing the vdev is a two step process: 3068 * 1). expand the physical size (i.e. relabel) 3069 * 2). online the vdev to create the new metaslabs 3070 */ 3071 if (vdev_walk_tree(tvd, grow_vdev, &newsize) != NULL || 3072 vdev_walk_tree(tvd, online_vdev, NULL) != NULL || 3073 tvd->vdev_state != VDEV_STATE_HEALTHY) { 3074 if (ztest_opts.zo_verbose >= 5) { 3075 (void) printf("Could not expand LUN because " 3076 "the vdev configuration changed.\n"); 3077 } 3078 spa_config_exit(spa, SCL_STATE, spa); 3079 VERIFY(mutex_unlock(&ztest_vdev_lock) == 0); 3080 return; 3081 } 3082 3083 spa_config_exit(spa, SCL_STATE, spa); 3084 3085 /* 3086 * Expanding the LUN will update the config asynchronously, 3087 * thus we must wait for the async thread to complete any 3088 * pending tasks before proceeding. 3089 */ 3090 for (;;) { 3091 boolean_t done; 3092 mutex_enter(&spa->spa_async_lock); 3093 done = (spa->spa_async_thread == NULL && !spa->spa_async_tasks); 3094 mutex_exit(&spa->spa_async_lock); 3095 if (done) 3096 break; 3097 txg_wait_synced(spa_get_dsl(spa), 0); 3098 (void) poll(NULL, 0, 100); 3099 } 3100 3101 spa_config_enter(spa, SCL_STATE, spa, RW_READER); 3102 3103 tvd = spa->spa_root_vdev->vdev_child[top]; 3104 new_ms_count = tvd->vdev_ms_count; 3105 new_class_space = metaslab_class_get_space(mc); 3106 3107 if (tvd->vdev_mg != mg || mg->mg_class != mc) { 3108 if (ztest_opts.zo_verbose >= 5) { 3109 (void) printf("Could not verify LUN expansion due to " 3110 "intervening vdev offline or remove.\n"); 3111 } 3112 spa_config_exit(spa, SCL_STATE, spa); 3113 VERIFY(mutex_unlock(&ztest_vdev_lock) == 0); 3114 return; 3115 } 3116 3117 /* 3118 * Make sure we were able to grow the vdev. 3119 */ 3120 if (new_ms_count <= old_ms_count) 3121 fatal(0, "LUN expansion failed: ms_count %llu <= %llu\n", 3122 old_ms_count, new_ms_count); 3123 3124 /* 3125 * Make sure we were able to grow the pool. 3126 */ 3127 if (new_class_space <= old_class_space) 3128 fatal(0, "LUN expansion failed: class_space %llu <= %llu\n", 3129 old_class_space, new_class_space); 3130 3131 if (ztest_opts.zo_verbose >= 5) { 3132 char oldnumbuf[6], newnumbuf[6]; 3133 3134 nicenum(old_class_space, oldnumbuf); 3135 nicenum(new_class_space, newnumbuf); 3136 (void) printf("%s grew from %s to %s\n", 3137 spa->spa_name, oldnumbuf, newnumbuf); 3138 } 3139 3140 spa_config_exit(spa, SCL_STATE, spa); 3141 VERIFY(mutex_unlock(&ztest_vdev_lock) == 0); 3142} 3143 3144/* 3145 * Verify that dmu_objset_{create,destroy,open,close} work as expected. 3146 */ 3147/* ARGSUSED */ 3148static void 3149ztest_objset_create_cb(objset_t *os, void *arg, cred_t *cr, dmu_tx_t *tx) 3150{ 3151 /* 3152 * Create the objects common to all ztest datasets. 3153 */ 3154 VERIFY(zap_create_claim(os, ZTEST_DIROBJ, 3155 DMU_OT_ZAP_OTHER, DMU_OT_NONE, 0, tx) == 0); 3156} 3157 3158static int 3159ztest_dataset_create(char *dsname) 3160{ 3161 uint64_t zilset = ztest_random(100); 3162 int err = dmu_objset_create(dsname, DMU_OST_OTHER, 0, 3163 ztest_objset_create_cb, NULL); 3164 3165 if (err || zilset < 80) 3166 return (err); 3167 3168 if (ztest_opts.zo_verbose >= 6) 3169 (void) printf("Setting dataset %s to sync always\n", dsname); 3170 return (ztest_dsl_prop_set_uint64(dsname, ZFS_PROP_SYNC, 3171 ZFS_SYNC_ALWAYS, B_FALSE)); 3172} 3173 3174/* ARGSUSED */ 3175static int 3176ztest_objset_destroy_cb(const char *name, void *arg) 3177{ 3178 objset_t *os; 3179 dmu_object_info_t doi; 3180 int error; 3181 3182 /* 3183 * Verify that the dataset contains a directory object. 3184 */ 3185 VERIFY0(dmu_objset_own(name, DMU_OST_OTHER, B_TRUE, FTAG, &os)); 3186 error = dmu_object_info(os, ZTEST_DIROBJ, &doi); 3187 if (error != ENOENT) { 3188 /* We could have crashed in the middle of destroying it */ 3189 ASSERT0(error); 3190 ASSERT3U(doi.doi_type, ==, DMU_OT_ZAP_OTHER); 3191 ASSERT3S(doi.doi_physical_blocks_512, >=, 0); 3192 } 3193 dmu_objset_disown(os, FTAG); 3194 3195 /* 3196 * Destroy the dataset. 3197 */ 3198 if (strchr(name, '@') != NULL) { 3199 VERIFY0(dsl_destroy_snapshot(name, B_FALSE)); 3200 } else { 3201 VERIFY0(dsl_destroy_head(name)); 3202 } 3203 return (0); 3204} 3205 3206static boolean_t 3207ztest_snapshot_create(char *osname, uint64_t id) 3208{ 3209 char snapname[MAXNAMELEN]; 3210 int error; 3211 3212 (void) snprintf(snapname, sizeof (snapname), "%llu", (u_longlong_t)id); 3213 3214 error = dmu_objset_snapshot_one(osname, snapname); 3215 if (error == ENOSPC) { 3216 ztest_record_enospc(FTAG); 3217 return (B_FALSE); 3218 } 3219 if (error != 0 && error != EEXIST) { 3220 fatal(0, "ztest_snapshot_create(%s@%s) = %d", osname, 3221 snapname, error); 3222 } 3223 return (B_TRUE); 3224} 3225 3226static boolean_t 3227ztest_snapshot_destroy(char *osname, uint64_t id) 3228{ 3229 char snapname[MAXNAMELEN]; 3230 int error; 3231 3232 (void) snprintf(snapname, MAXNAMELEN, "%s@%llu", osname, 3233 (u_longlong_t)id); 3234 3235 error = dsl_destroy_snapshot(snapname, B_FALSE); 3236 if (error != 0 && error != ENOENT) 3237 fatal(0, "ztest_snapshot_destroy(%s) = %d", snapname, error); 3238 return (B_TRUE); 3239} 3240 3241/* ARGSUSED */ 3242void 3243ztest_dmu_objset_create_destroy(ztest_ds_t *zd, uint64_t id) 3244{ 3245 ztest_ds_t zdtmp; 3246 int iters; 3247 int error; 3248 objset_t *os, *os2; 3249 char name[MAXNAMELEN]; 3250 zilog_t *zilog; 3251 3252 (void) rw_rdlock(&ztest_name_lock); 3253 3254 (void) snprintf(name, MAXNAMELEN, "%s/temp_%llu", 3255 ztest_opts.zo_pool, (u_longlong_t)id); 3256 3257 /* 3258 * If this dataset exists from a previous run, process its replay log 3259 * half of the time. If we don't replay it, then dmu_objset_destroy() 3260 * (invoked from ztest_objset_destroy_cb()) should just throw it away. 3261 */ 3262 if (ztest_random(2) == 0 && 3263 dmu_objset_own(name, DMU_OST_OTHER, B_FALSE, FTAG, &os) == 0) { 3264 ztest_zd_init(&zdtmp, NULL, os); 3265 zil_replay(os, &zdtmp, ztest_replay_vector); 3266 ztest_zd_fini(&zdtmp); 3267 dmu_objset_disown(os, FTAG); 3268 } 3269 3270 /* 3271 * There may be an old instance of the dataset we're about to 3272 * create lying around from a previous run. If so, destroy it 3273 * and all of its snapshots. 3274 */ 3275 (void) dmu_objset_find(name, ztest_objset_destroy_cb, NULL, 3276 DS_FIND_CHILDREN | DS_FIND_SNAPSHOTS); 3277 3278 /* 3279 * Verify that the destroyed dataset is no longer in the namespace. 3280 */ 3281 VERIFY3U(ENOENT, ==, dmu_objset_own(name, DMU_OST_OTHER, B_TRUE, 3282 FTAG, &os)); 3283 3284 /* 3285 * Verify that we can create a new dataset. 3286 */ 3287 error = ztest_dataset_create(name); 3288 if (error) { 3289 if (error == ENOSPC) { 3290 ztest_record_enospc(FTAG); 3291 (void) rw_unlock(&ztest_name_lock); 3292 return; 3293 } 3294 fatal(0, "dmu_objset_create(%s) = %d", name, error); 3295 } 3296 3297 VERIFY0(dmu_objset_own(name, DMU_OST_OTHER, B_FALSE, FTAG, &os)); 3298 3299 ztest_zd_init(&zdtmp, NULL, os); 3300 3301 /* 3302 * Open the intent log for it. 3303 */ 3304 zilog = zil_open(os, ztest_get_data); 3305 3306 /* 3307 * Put some objects in there, do a little I/O to them, 3308 * and randomly take a couple of snapshots along the way. 3309 */ 3310 iters = ztest_random(5); 3311 for (int i = 0; i < iters; i++) { 3312 ztest_dmu_object_alloc_free(&zdtmp, id); 3313 if (ztest_random(iters) == 0) 3314 (void) ztest_snapshot_create(name, i); 3315 } 3316 3317 /* 3318 * Verify that we cannot create an existing dataset. 3319 */ 3320 VERIFY3U(EEXIST, ==, 3321 dmu_objset_create(name, DMU_OST_OTHER, 0, NULL, NULL)); 3322 3323 /* 3324 * Verify that we can hold an objset that is also owned. 3325 */ 3326 VERIFY3U(0, ==, dmu_objset_hold(name, FTAG, &os2)); 3327 dmu_objset_rele(os2, FTAG); 3328 3329 /* 3330 * Verify that we cannot own an objset that is already owned. 3331 */ 3332 VERIFY3U(EBUSY, ==, 3333 dmu_objset_own(name, DMU_OST_OTHER, B_FALSE, FTAG, &os2)); 3334 3335 zil_close(zilog); 3336 dmu_objset_disown(os, FTAG); 3337 ztest_zd_fini(&zdtmp); 3338 3339 (void) rw_unlock(&ztest_name_lock); 3340} 3341 3342/* 3343 * Verify that dmu_snapshot_{create,destroy,open,close} work as expected. 3344 */ 3345void 3346ztest_dmu_snapshot_create_destroy(ztest_ds_t *zd, uint64_t id) 3347{ 3348 (void) rw_rdlock(&ztest_name_lock); 3349 (void) ztest_snapshot_destroy(zd->zd_name, id); 3350 (void) ztest_snapshot_create(zd->zd_name, id); 3351 (void) rw_unlock(&ztest_name_lock); 3352} 3353 3354/* 3355 * Cleanup non-standard snapshots and clones. 3356 */ 3357void 3358ztest_dsl_dataset_cleanup(char *osname, uint64_t id) 3359{ 3360 char snap1name[MAXNAMELEN]; 3361 char clone1name[MAXNAMELEN]; 3362 char snap2name[MAXNAMELEN]; 3363 char clone2name[MAXNAMELEN]; 3364 char snap3name[MAXNAMELEN]; 3365 int error; 3366 3367 (void) snprintf(snap1name, MAXNAMELEN, "%s@s1_%llu", osname, id); 3368 (void) snprintf(clone1name, MAXNAMELEN, "%s/c1_%llu", osname, id); 3369 (void) snprintf(snap2name, MAXNAMELEN, "%s@s2_%llu", clone1name, id); 3370 (void) snprintf(clone2name, MAXNAMELEN, "%s/c2_%llu", osname, id); 3371 (void) snprintf(snap3name, MAXNAMELEN, "%s@s3_%llu", clone1name, id); 3372 3373 error = dsl_destroy_head(clone2name); 3374 if (error && error != ENOENT) 3375 fatal(0, "dsl_destroy_head(%s) = %d", clone2name, error); 3376 error = dsl_destroy_snapshot(snap3name, B_FALSE); 3377 if (error && error != ENOENT) 3378 fatal(0, "dsl_destroy_snapshot(%s) = %d", snap3name, error); 3379 error = dsl_destroy_snapshot(snap2name, B_FALSE); 3380 if (error && error != ENOENT) 3381 fatal(0, "dsl_destroy_snapshot(%s) = %d", snap2name, error); 3382 error = dsl_destroy_head(clone1name); 3383 if (error && error != ENOENT) 3384 fatal(0, "dsl_destroy_head(%s) = %d", clone1name, error); 3385 error = dsl_destroy_snapshot(snap1name, B_FALSE); 3386 if (error && error != ENOENT) 3387 fatal(0, "dsl_destroy_snapshot(%s) = %d", snap1name, error); 3388} 3389 3390/* 3391 * Verify dsl_dataset_promote handles EBUSY 3392 */ 3393void 3394ztest_dsl_dataset_promote_busy(ztest_ds_t *zd, uint64_t id) 3395{ 3396 objset_t *os; 3397 char snap1name[MAXNAMELEN]; 3398 char clone1name[MAXNAMELEN]; 3399 char snap2name[MAXNAMELEN]; 3400 char clone2name[MAXNAMELEN]; 3401 char snap3name[MAXNAMELEN]; 3402 char *osname = zd->zd_name; 3403 int error; 3404 3405 (void) rw_rdlock(&ztest_name_lock); 3406 3407 ztest_dsl_dataset_cleanup(osname, id); 3408 3409 (void) snprintf(snap1name, MAXNAMELEN, "%s@s1_%llu", osname, id); 3410 (void) snprintf(clone1name, MAXNAMELEN, "%s/c1_%llu", osname, id); 3411 (void) snprintf(snap2name, MAXNAMELEN, "%s@s2_%llu", clone1name, id); 3412 (void) snprintf(clone2name, MAXNAMELEN, "%s/c2_%llu", osname, id); 3413 (void) snprintf(snap3name, MAXNAMELEN, "%s@s3_%llu", clone1name, id); 3414 3415 error = dmu_objset_snapshot_one(osname, strchr(snap1name, '@') + 1); 3416 if (error && error != EEXIST) { 3417 if (error == ENOSPC) { 3418 ztest_record_enospc(FTAG); 3419 goto out; 3420 } 3421 fatal(0, "dmu_take_snapshot(%s) = %d", snap1name, error); 3422 } 3423 3424 error = dmu_objset_clone(clone1name, snap1name); 3425 if (error) { 3426 if (error == ENOSPC) { 3427 ztest_record_enospc(FTAG); 3428 goto out; 3429 } 3430 fatal(0, "dmu_objset_create(%s) = %d", clone1name, error); 3431 } 3432 3433 error = dmu_objset_snapshot_one(clone1name, strchr(snap2name, '@') + 1); 3434 if (error && error != EEXIST) { 3435 if (error == ENOSPC) { 3436 ztest_record_enospc(FTAG); 3437 goto out; 3438 } 3439 fatal(0, "dmu_open_snapshot(%s) = %d", snap2name, error); 3440 } 3441 3442 error = dmu_objset_snapshot_one(clone1name, strchr(snap3name, '@') + 1); 3443 if (error && error != EEXIST) { 3444 if (error == ENOSPC) { 3445 ztest_record_enospc(FTAG); 3446 goto out; 3447 } 3448 fatal(0, "dmu_open_snapshot(%s) = %d", snap3name, error); 3449 } 3450 3451 error = dmu_objset_clone(clone2name, snap3name); 3452 if (error) { 3453 if (error == ENOSPC) { 3454 ztest_record_enospc(FTAG); 3455 goto out; 3456 } 3457 fatal(0, "dmu_objset_create(%s) = %d", clone2name, error); 3458 } 3459 3460 error = dmu_objset_own(snap2name, DMU_OST_ANY, B_TRUE, FTAG, &os); 3461 if (error) 3462 fatal(0, "dmu_objset_own(%s) = %d", snap2name, error); 3463 error = dsl_dataset_promote(clone2name, NULL); 3464 if (error != EBUSY) 3465 fatal(0, "dsl_dataset_promote(%s), %d, not EBUSY", clone2name, 3466 error); 3467 dmu_objset_disown(os, FTAG); 3468 3469out: 3470 ztest_dsl_dataset_cleanup(osname, id); 3471 3472 (void) rw_unlock(&ztest_name_lock); 3473} 3474 3475/* 3476 * Verify that dmu_object_{alloc,free} work as expected. 3477 */ 3478void 3479ztest_dmu_object_alloc_free(ztest_ds_t *zd, uint64_t id) 3480{ 3481 ztest_od_t od[4]; 3482 int batchsize = sizeof (od) / sizeof (od[0]); 3483 3484 for (int b = 0; b < batchsize; b++) 3485 ztest_od_init(&od[b], id, FTAG, b, DMU_OT_UINT64_OTHER, 0, 0); 3486 3487 /* 3488 * Destroy the previous batch of objects, create a new batch, 3489 * and do some I/O on the new objects. 3490 */ 3491 if (ztest_object_init(zd, od, sizeof (od), B_TRUE) != 0) 3492 return; 3493 3494 while (ztest_random(4 * batchsize) != 0) 3495 ztest_io(zd, od[ztest_random(batchsize)].od_object, 3496 ztest_random(ZTEST_RANGE_LOCKS) << SPA_MAXBLOCKSHIFT); 3497} 3498 3499/* 3500 * Verify that dmu_{read,write} work as expected. 3501 */ 3502void 3503ztest_dmu_read_write(ztest_ds_t *zd, uint64_t id) 3504{ 3505 objset_t *os = zd->zd_os; 3506 ztest_od_t od[2]; 3507 dmu_tx_t *tx; 3508 int i, freeit, error; 3509 uint64_t n, s, txg; 3510 bufwad_t *packbuf, *bigbuf, *pack, *bigH, *bigT; 3511 uint64_t packobj, packoff, packsize, bigobj, bigoff, bigsize; 3512 uint64_t chunksize = (1000 + ztest_random(1000)) * sizeof (uint64_t); 3513 uint64_t regions = 997; 3514 uint64_t stride = 123456789ULL; 3515 uint64_t width = 40; 3516 int free_percent = 5; 3517 3518 /* 3519 * This test uses two objects, packobj and bigobj, that are always 3520 * updated together (i.e. in the same tx) so that their contents are 3521 * in sync and can be compared. Their contents relate to each other 3522 * in a simple way: packobj is a dense array of 'bufwad' structures, 3523 * while bigobj is a sparse array of the same bufwads. Specifically, 3524 * for any index n, there are three bufwads that should be identical: 3525 * 3526 * packobj, at offset n * sizeof (bufwad_t) 3527 * bigobj, at the head of the nth chunk 3528 * bigobj, at the tail of the nth chunk 3529 * 3530 * The chunk size is arbitrary. It doesn't have to be a power of two, 3531 * and it doesn't have any relation to the object blocksize. 3532 * The only requirement is that it can hold at least two bufwads. 3533 * 3534 * Normally, we write the bufwad to each of these locations. 3535 * However, free_percent of the time we instead write zeroes to 3536 * packobj and perform a dmu_free_range() on bigobj. By comparing 3537 * bigobj to packobj, we can verify that the DMU is correctly 3538 * tracking which parts of an object are allocated and free, 3539 * and that the contents of the allocated blocks are correct. 3540 */ 3541 3542 /* 3543 * Read the directory info. If it's the first time, set things up. 3544 */ 3545 ztest_od_init(&od[0], id, FTAG, 0, DMU_OT_UINT64_OTHER, 0, chunksize); 3546 ztest_od_init(&od[1], id, FTAG, 1, DMU_OT_UINT64_OTHER, 0, chunksize); 3547 3548 if (ztest_object_init(zd, od, sizeof (od), B_FALSE) != 0) 3549 return; 3550 3551 bigobj = od[0].od_object; 3552 packobj = od[1].od_object; 3553 chunksize = od[0].od_gen; 3554 ASSERT(chunksize == od[1].od_gen); 3555 3556 /* 3557 * Prefetch a random chunk of the big object. 3558 * Our aim here is to get some async reads in flight 3559 * for blocks that we may free below; the DMU should 3560 * handle this race correctly. 3561 */ 3562 n = ztest_random(regions) * stride + ztest_random(width); 3563 s = 1 + ztest_random(2 * width - 1); 3564 dmu_prefetch(os, bigobj, n * chunksize, s * chunksize); 3565 3566 /* 3567 * Pick a random index and compute the offsets into packobj and bigobj. 3568 */ 3569 n = ztest_random(regions) * stride + ztest_random(width); 3570 s = 1 + ztest_random(width - 1); 3571 3572 packoff = n * sizeof (bufwad_t); 3573 packsize = s * sizeof (bufwad_t); 3574 3575 bigoff = n * chunksize; 3576 bigsize = s * chunksize; 3577 3578 packbuf = umem_alloc(packsize, UMEM_NOFAIL); 3579 bigbuf = umem_alloc(bigsize, UMEM_NOFAIL); 3580 3581 /* 3582 * free_percent of the time, free a range of bigobj rather than 3583 * overwriting it. 3584 */ 3585 freeit = (ztest_random(100) < free_percent); 3586 3587 /* 3588 * Read the current contents of our objects. 3589 */ 3590 error = dmu_read(os, packobj, packoff, packsize, packbuf, 3591 DMU_READ_PREFETCH); 3592 ASSERT0(error); 3593 error = dmu_read(os, bigobj, bigoff, bigsize, bigbuf, 3594 DMU_READ_PREFETCH); 3595 ASSERT0(error); 3596 3597 /* 3598 * Get a tx for the mods to both packobj and bigobj. 3599 */ 3600 tx = dmu_tx_create(os); 3601 3602 dmu_tx_hold_write(tx, packobj, packoff, packsize); 3603 3604 if (freeit) 3605 dmu_tx_hold_free(tx, bigobj, bigoff, bigsize); 3606 else 3607 dmu_tx_hold_write(tx, bigobj, bigoff, bigsize); 3608 3609 txg = ztest_tx_assign(tx, TXG_MIGHTWAIT, FTAG); 3610 if (txg == 0) { 3611 umem_free(packbuf, packsize); 3612 umem_free(bigbuf, bigsize); 3613 return; 3614 } 3615 3616 dmu_object_set_checksum(os, bigobj, 3617 (enum zio_checksum)ztest_random_dsl_prop(ZFS_PROP_CHECKSUM), tx); 3618 3619 dmu_object_set_compress(os, bigobj, 3620 (enum zio_compress)ztest_random_dsl_prop(ZFS_PROP_COMPRESSION), tx); 3621 3622 /* 3623 * For each index from n to n + s, verify that the existing bufwad 3624 * in packobj matches the bufwads at the head and tail of the 3625 * corresponding chunk in bigobj. Then update all three bufwads 3626 * with the new values we want to write out. 3627 */ 3628 for (i = 0; i < s; i++) { 3629 /* LINTED */ 3630 pack = (bufwad_t *)((char *)packbuf + i * sizeof (bufwad_t)); 3631 /* LINTED */ 3632 bigH = (bufwad_t *)((char *)bigbuf + i * chunksize); 3633 /* LINTED */ 3634 bigT = (bufwad_t *)((char *)bigH + chunksize) - 1; 3635 3636 ASSERT((uintptr_t)bigH - (uintptr_t)bigbuf < bigsize); 3637 ASSERT((uintptr_t)bigT - (uintptr_t)bigbuf < bigsize); 3638 3639 if (pack->bw_txg > txg) 3640 fatal(0, "future leak: got %llx, open txg is %llx", 3641 pack->bw_txg, txg); 3642 3643 if (pack->bw_data != 0 && pack->bw_index != n + i) 3644 fatal(0, "wrong index: got %llx, wanted %llx+%llx", 3645 pack->bw_index, n, i); 3646 3647 if (bcmp(pack, bigH, sizeof (bufwad_t)) != 0) 3648 fatal(0, "pack/bigH mismatch in %p/%p", pack, bigH); 3649 3650 if (bcmp(pack, bigT, sizeof (bufwad_t)) != 0) 3651 fatal(0, "pack/bigT mismatch in %p/%p", pack, bigT); 3652 3653 if (freeit) { 3654 bzero(pack, sizeof (bufwad_t)); 3655 } else { 3656 pack->bw_index = n + i; 3657 pack->bw_txg = txg; 3658 pack->bw_data = 1 + ztest_random(-2ULL); 3659 } 3660 *bigH = *pack; 3661 *bigT = *pack; 3662 } 3663 3664 /* 3665 * We've verified all the old bufwads, and made new ones. 3666 * Now write them out. 3667 */ 3668 dmu_write(os, packobj, packoff, packsize, packbuf, tx); 3669 3670 if (freeit) { 3671 if (ztest_opts.zo_verbose >= 7) { 3672 (void) printf("freeing offset %llx size %llx" 3673 " txg %llx\n", 3674 (u_longlong_t)bigoff, 3675 (u_longlong_t)bigsize, 3676 (u_longlong_t)txg); 3677 } 3678 VERIFY(0 == dmu_free_range(os, bigobj, bigoff, bigsize, tx)); 3679 } else { 3680 if (ztest_opts.zo_verbose >= 7) { 3681 (void) printf("writing offset %llx size %llx" 3682 " txg %llx\n", 3683 (u_longlong_t)bigoff, 3684 (u_longlong_t)bigsize, 3685 (u_longlong_t)txg); 3686 } 3687 dmu_write(os, bigobj, bigoff, bigsize, bigbuf, tx); 3688 } 3689 3690 dmu_tx_commit(tx); 3691 3692 /* 3693 * Sanity check the stuff we just wrote. 3694 */ 3695 { 3696 void *packcheck = umem_alloc(packsize, UMEM_NOFAIL); 3697 void *bigcheck = umem_alloc(bigsize, UMEM_NOFAIL); 3698 3699 VERIFY(0 == dmu_read(os, packobj, packoff, 3700 packsize, packcheck, DMU_READ_PREFETCH)); 3701 VERIFY(0 == dmu_read(os, bigobj, bigoff, 3702 bigsize, bigcheck, DMU_READ_PREFETCH)); 3703 3704 ASSERT(bcmp(packbuf, packcheck, packsize) == 0); 3705 ASSERT(bcmp(bigbuf, bigcheck, bigsize) == 0); 3706 3707 umem_free(packcheck, packsize); 3708 umem_free(bigcheck, bigsize); 3709 } 3710 3711 umem_free(packbuf, packsize); 3712 umem_free(bigbuf, bigsize); 3713} 3714 3715void 3716compare_and_update_pbbufs(uint64_t s, bufwad_t *packbuf, bufwad_t *bigbuf, 3717 uint64_t bigsize, uint64_t n, uint64_t chunksize, uint64_t txg) 3718{ 3719 uint64_t i; 3720 bufwad_t *pack; 3721 bufwad_t *bigH; 3722 bufwad_t *bigT; 3723 3724 /* 3725 * For each index from n to n + s, verify that the existing bufwad 3726 * in packobj matches the bufwads at the head and tail of the 3727 * corresponding chunk in bigobj. Then update all three bufwads 3728 * with the new values we want to write out. 3729 */ 3730 for (i = 0; i < s; i++) { 3731 /* LINTED */ 3732 pack = (bufwad_t *)((char *)packbuf + i * sizeof (bufwad_t)); 3733 /* LINTED */ 3734 bigH = (bufwad_t *)((char *)bigbuf + i * chunksize); 3735 /* LINTED */ 3736 bigT = (bufwad_t *)((char *)bigH + chunksize) - 1; 3737 3738 ASSERT((uintptr_t)bigH - (uintptr_t)bigbuf < bigsize); 3739 ASSERT((uintptr_t)bigT - (uintptr_t)bigbuf < bigsize); 3740 3741 if (pack->bw_txg > txg) 3742 fatal(0, "future leak: got %llx, open txg is %llx", 3743 pack->bw_txg, txg); 3744 3745 if (pack->bw_data != 0 && pack->bw_index != n + i) 3746 fatal(0, "wrong index: got %llx, wanted %llx+%llx", 3747 pack->bw_index, n, i); 3748 3749 if (bcmp(pack, bigH, sizeof (bufwad_t)) != 0) 3750 fatal(0, "pack/bigH mismatch in %p/%p", pack, bigH); 3751 3752 if (bcmp(pack, bigT, sizeof (bufwad_t)) != 0) 3753 fatal(0, "pack/bigT mismatch in %p/%p", pack, bigT); 3754 3755 pack->bw_index = n + i; 3756 pack->bw_txg = txg; 3757 pack->bw_data = 1 + ztest_random(-2ULL); 3758 3759 *bigH = *pack; 3760 *bigT = *pack; 3761 } 3762} 3763 3764void 3765ztest_dmu_read_write_zcopy(ztest_ds_t *zd, uint64_t id) 3766{ 3767 objset_t *os = zd->zd_os; 3768 ztest_od_t od[2]; 3769 dmu_tx_t *tx; 3770 uint64_t i; 3771 int error; 3772 uint64_t n, s, txg; 3773 bufwad_t *packbuf, *bigbuf; 3774 uint64_t packobj, packoff, packsize, bigobj, bigoff, bigsize; 3775 uint64_t blocksize = ztest_random_blocksize(); 3776 uint64_t chunksize = blocksize; 3777 uint64_t regions = 997; 3778 uint64_t stride = 123456789ULL; 3779 uint64_t width = 9; 3780 dmu_buf_t *bonus_db; 3781 arc_buf_t **bigbuf_arcbufs; 3782 dmu_object_info_t doi; 3783 3784 /* 3785 * This test uses two objects, packobj and bigobj, that are always 3786 * updated together (i.e. in the same tx) so that their contents are 3787 * in sync and can be compared. Their contents relate to each other 3788 * in a simple way: packobj is a dense array of 'bufwad' structures, 3789 * while bigobj is a sparse array of the same bufwads. Specifically, 3790 * for any index n, there are three bufwads that should be identical: 3791 * 3792 * packobj, at offset n * sizeof (bufwad_t) 3793 * bigobj, at the head of the nth chunk 3794 * bigobj, at the tail of the nth chunk 3795 * 3796 * The chunk size is set equal to bigobj block size so that 3797 * dmu_assign_arcbuf() can be tested for object updates. 3798 */ 3799 3800 /* 3801 * Read the directory info. If it's the first time, set things up. 3802 */ 3803 ztest_od_init(&od[0], id, FTAG, 0, DMU_OT_UINT64_OTHER, blocksize, 0); 3804 ztest_od_init(&od[1], id, FTAG, 1, DMU_OT_UINT64_OTHER, 0, chunksize); 3805 3806 if (ztest_object_init(zd, od, sizeof (od), B_FALSE) != 0) 3807 return; 3808 3809 bigobj = od[0].od_object; 3810 packobj = od[1].od_object; 3811 blocksize = od[0].od_blocksize; 3812 chunksize = blocksize; 3813 ASSERT(chunksize == od[1].od_gen); 3814 3815 VERIFY(dmu_object_info(os, bigobj, &doi) == 0); 3816 VERIFY(ISP2(doi.doi_data_block_size)); 3817 VERIFY(chunksize == doi.doi_data_block_size); 3818 VERIFY(chunksize >= 2 * sizeof (bufwad_t)); 3819 3820 /* 3821 * Pick a random index and compute the offsets into packobj and bigobj. 3822 */ 3823 n = ztest_random(regions) * stride + ztest_random(width); 3824 s = 1 + ztest_random(width - 1); 3825 3826 packoff = n * sizeof (bufwad_t); 3827 packsize = s * sizeof (bufwad_t); 3828 3829 bigoff = n * chunksize; 3830 bigsize = s * chunksize; 3831 3832 packbuf = umem_zalloc(packsize, UMEM_NOFAIL); 3833 bigbuf = umem_zalloc(bigsize, UMEM_NOFAIL); 3834 3835 VERIFY3U(0, ==, dmu_bonus_hold(os, bigobj, FTAG, &bonus_db)); 3836 3837 bigbuf_arcbufs = umem_zalloc(2 * s * sizeof (arc_buf_t *), UMEM_NOFAIL); 3838 3839 /* 3840 * Iteration 0 test zcopy for DB_UNCACHED dbufs. 3841 * Iteration 1 test zcopy to already referenced dbufs. 3842 * Iteration 2 test zcopy to dirty dbuf in the same txg. 3843 * Iteration 3 test zcopy to dbuf dirty in previous txg. 3844 * Iteration 4 test zcopy when dbuf is no longer dirty. 3845 * Iteration 5 test zcopy when it can't be done. 3846 * Iteration 6 one more zcopy write. 3847 */ 3848 for (i = 0; i < 7; i++) { 3849 uint64_t j; 3850 uint64_t off; 3851 3852 /* 3853 * In iteration 5 (i == 5) use arcbufs 3854 * that don't match bigobj blksz to test 3855 * dmu_assign_arcbuf() when it can't directly 3856 * assign an arcbuf to a dbuf. 3857 */ 3858 for (j = 0; j < s; j++) { 3859 if (i != 5) { 3860 bigbuf_arcbufs[j] = 3861 dmu_request_arcbuf(bonus_db, chunksize); 3862 } else { 3863 bigbuf_arcbufs[2 * j] = 3864 dmu_request_arcbuf(bonus_db, chunksize / 2); 3865 bigbuf_arcbufs[2 * j + 1] = 3866 dmu_request_arcbuf(bonus_db, chunksize / 2); 3867 } 3868 } 3869 3870 /* 3871 * Get a tx for the mods to both packobj and bigobj. 3872 */ 3873 tx = dmu_tx_create(os); 3874 3875 dmu_tx_hold_write(tx, packobj, packoff, packsize); 3876 dmu_tx_hold_write(tx, bigobj, bigoff, bigsize); 3877 3878 txg = ztest_tx_assign(tx, TXG_MIGHTWAIT, FTAG); 3879 if (txg == 0) { 3880 umem_free(packbuf, packsize); 3881 umem_free(bigbuf, bigsize); 3882 for (j = 0; j < s; j++) { 3883 if (i != 5) { 3884 dmu_return_arcbuf(bigbuf_arcbufs[j]); 3885 } else { 3886 dmu_return_arcbuf( 3887 bigbuf_arcbufs[2 * j]); 3888 dmu_return_arcbuf( 3889 bigbuf_arcbufs[2 * j + 1]); 3890 } 3891 } 3892 umem_free(bigbuf_arcbufs, 2 * s * sizeof (arc_buf_t *)); 3893 dmu_buf_rele(bonus_db, FTAG); 3894 return; 3895 } 3896 3897 /* 3898 * 50% of the time don't read objects in the 1st iteration to 3899 * test dmu_assign_arcbuf() for the case when there're no 3900 * existing dbufs for the specified offsets. 3901 */ 3902 if (i != 0 || ztest_random(2) != 0) { 3903 error = dmu_read(os, packobj, packoff, 3904 packsize, packbuf, DMU_READ_PREFETCH); 3905 ASSERT0(error); 3906 error = dmu_read(os, bigobj, bigoff, bigsize, 3907 bigbuf, DMU_READ_PREFETCH); 3908 ASSERT0(error); 3909 } 3910 compare_and_update_pbbufs(s, packbuf, bigbuf, bigsize, 3911 n, chunksize, txg); 3912 3913 /* 3914 * We've verified all the old bufwads, and made new ones. 3915 * Now write them out. 3916 */ 3917 dmu_write(os, packobj, packoff, packsize, packbuf, tx); 3918 if (ztest_opts.zo_verbose >= 7) { 3919 (void) printf("writing offset %llx size %llx" 3920 " txg %llx\n", 3921 (u_longlong_t)bigoff, 3922 (u_longlong_t)bigsize, 3923 (u_longlong_t)txg); 3924 } 3925 for (off = bigoff, j = 0; j < s; j++, off += chunksize) { 3926 dmu_buf_t *dbt; 3927 if (i != 5) { 3928 bcopy((caddr_t)bigbuf + (off - bigoff), 3929 bigbuf_arcbufs[j]->b_data, chunksize); 3930 } else { 3931 bcopy((caddr_t)bigbuf + (off - bigoff), 3932 bigbuf_arcbufs[2 * j]->b_data, 3933 chunksize / 2); 3934 bcopy((caddr_t)bigbuf + (off - bigoff) + 3935 chunksize / 2, 3936 bigbuf_arcbufs[2 * j + 1]->b_data, 3937 chunksize / 2); 3938 } 3939 3940 if (i == 1) { 3941 VERIFY(dmu_buf_hold(os, bigobj, off, 3942 FTAG, &dbt, DMU_READ_NO_PREFETCH) == 0); 3943 } 3944 if (i != 5) { 3945 dmu_assign_arcbuf(bonus_db, off, 3946 bigbuf_arcbufs[j], tx); 3947 } else { 3948 dmu_assign_arcbuf(bonus_db, off, 3949 bigbuf_arcbufs[2 * j], tx); 3950 dmu_assign_arcbuf(bonus_db, 3951 off + chunksize / 2, 3952 bigbuf_arcbufs[2 * j + 1], tx); 3953 } 3954 if (i == 1) { 3955 dmu_buf_rele(dbt, FTAG); 3956 } 3957 } 3958 dmu_tx_commit(tx); 3959 3960 /* 3961 * Sanity check the stuff we just wrote. 3962 */ 3963 { 3964 void *packcheck = umem_alloc(packsize, UMEM_NOFAIL); 3965 void *bigcheck = umem_alloc(bigsize, UMEM_NOFAIL); 3966 3967 VERIFY(0 == dmu_read(os, packobj, packoff, 3968 packsize, packcheck, DMU_READ_PREFETCH)); 3969 VERIFY(0 == dmu_read(os, bigobj, bigoff, 3970 bigsize, bigcheck, DMU_READ_PREFETCH)); 3971 3972 ASSERT(bcmp(packbuf, packcheck, packsize) == 0); 3973 ASSERT(bcmp(bigbuf, bigcheck, bigsize) == 0); 3974 3975 umem_free(packcheck, packsize); 3976 umem_free(bigcheck, bigsize); 3977 } 3978 if (i == 2) { 3979 txg_wait_open(dmu_objset_pool(os), 0); 3980 } else if (i == 3) { 3981 txg_wait_synced(dmu_objset_pool(os), 0); 3982 } 3983 } 3984 3985 dmu_buf_rele(bonus_db, FTAG); 3986 umem_free(packbuf, packsize); 3987 umem_free(bigbuf, bigsize); 3988 umem_free(bigbuf_arcbufs, 2 * s * sizeof (arc_buf_t *)); 3989} 3990 3991/* ARGSUSED */ 3992void 3993ztest_dmu_write_parallel(ztest_ds_t *zd, uint64_t id) 3994{ 3995 ztest_od_t od[1]; 3996 uint64_t offset = (1ULL << (ztest_random(20) + 43)) + 3997 (ztest_random(ZTEST_RANGE_LOCKS) << SPA_MAXBLOCKSHIFT); 3998 3999 /* 4000 * Have multiple threads write to large offsets in an object 4001 * to verify that parallel writes to an object -- even to the 4002 * same blocks within the object -- doesn't cause any trouble. 4003 */ 4004 ztest_od_init(&od[0], ID_PARALLEL, FTAG, 0, DMU_OT_UINT64_OTHER, 0, 0); 4005 4006 if (ztest_object_init(zd, od, sizeof (od), B_FALSE) != 0) 4007 return; 4008 4009 while (ztest_random(10) != 0) 4010 ztest_io(zd, od[0].od_object, offset); 4011} 4012 4013void 4014ztest_dmu_prealloc(ztest_ds_t *zd, uint64_t id) 4015{ 4016 ztest_od_t od[1]; 4017 uint64_t offset = (1ULL << (ztest_random(4) + SPA_MAXBLOCKSHIFT)) + 4018 (ztest_random(ZTEST_RANGE_LOCKS) << SPA_MAXBLOCKSHIFT); 4019 uint64_t count = ztest_random(20) + 1; 4020 uint64_t blocksize = ztest_random_blocksize(); 4021 void *data; 4022 4023 ztest_od_init(&od[0], id, FTAG, 0, DMU_OT_UINT64_OTHER, blocksize, 0); 4024 4025 if (ztest_object_init(zd, od, sizeof (od), !ztest_random(2)) != 0) 4026 return; 4027 4028 if (ztest_truncate(zd, od[0].od_object, offset, count * blocksize) != 0) 4029 return; 4030 4031 ztest_prealloc(zd, od[0].od_object, offset, count * blocksize); 4032 4033 data = umem_zalloc(blocksize, UMEM_NOFAIL); 4034 4035 while (ztest_random(count) != 0) { 4036 uint64_t randoff = offset + (ztest_random(count) * blocksize); 4037 if (ztest_write(zd, od[0].od_object, randoff, blocksize, 4038 data) != 0) 4039 break; 4040 while (ztest_random(4) != 0) 4041 ztest_io(zd, od[0].od_object, randoff); 4042 } 4043 4044 umem_free(data, blocksize); 4045} 4046 4047/* 4048 * Verify that zap_{create,destroy,add,remove,update} work as expected. 4049 */ 4050#define ZTEST_ZAP_MIN_INTS 1 4051#define ZTEST_ZAP_MAX_INTS 4 4052#define ZTEST_ZAP_MAX_PROPS 1000 4053 4054void 4055ztest_zap(ztest_ds_t *zd, uint64_t id) 4056{ 4057 objset_t *os = zd->zd_os; 4058 ztest_od_t od[1]; 4059 uint64_t object; 4060 uint64_t txg, last_txg; 4061 uint64_t value[ZTEST_ZAP_MAX_INTS]; 4062 uint64_t zl_ints, zl_intsize, prop; 4063 int i, ints; 4064 dmu_tx_t *tx; 4065 char propname[100], txgname[100]; 4066 int error; 4067 char *hc[2] = { "s.acl.h", ".s.open.h.hyLZlg" }; 4068 4069 ztest_od_init(&od[0], id, FTAG, 0, DMU_OT_ZAP_OTHER, 0, 0); 4070 4071 if (ztest_object_init(zd, od, sizeof (od), !ztest_random(2)) != 0) 4072 return; 4073 4074 object = od[0].od_object; 4075 4076 /* 4077 * Generate a known hash collision, and verify that 4078 * we can lookup and remove both entries. 4079 */ 4080 tx = dmu_tx_create(os); 4081 dmu_tx_hold_zap(tx, object, B_TRUE, NULL); 4082 txg = ztest_tx_assign(tx, TXG_MIGHTWAIT, FTAG); 4083 if (txg == 0) 4084 return; 4085 for (i = 0; i < 2; i++) { 4086 value[i] = i; 4087 VERIFY3U(0, ==, zap_add(os, object, hc[i], sizeof (uint64_t), 4088 1, &value[i], tx)); 4089 } 4090 for (i = 0; i < 2; i++) { 4091 VERIFY3U(EEXIST, ==, zap_add(os, object, hc[i], 4092 sizeof (uint64_t), 1, &value[i], tx)); 4093 VERIFY3U(0, ==, 4094 zap_length(os, object, hc[i], &zl_intsize, &zl_ints)); 4095 ASSERT3U(zl_intsize, ==, sizeof (uint64_t)); 4096 ASSERT3U(zl_ints, ==, 1); 4097 } 4098 for (i = 0; i < 2; i++) { 4099 VERIFY3U(0, ==, zap_remove(os, object, hc[i], tx)); 4100 } 4101 dmu_tx_commit(tx); 4102 4103 /* 4104 * Generate a buch of random entries. 4105 */ 4106 ints = MAX(ZTEST_ZAP_MIN_INTS, object % ZTEST_ZAP_MAX_INTS); 4107 4108 prop = ztest_random(ZTEST_ZAP_MAX_PROPS); 4109 (void) sprintf(propname, "prop_%llu", (u_longlong_t)prop); 4110 (void) sprintf(txgname, "txg_%llu", (u_longlong_t)prop); 4111 bzero(value, sizeof (value)); 4112 last_txg = 0; 4113 4114 /* 4115 * If these zap entries already exist, validate their contents. 4116 */ 4117 error = zap_length(os, object, txgname, &zl_intsize, &zl_ints); 4118 if (error == 0) { 4119 ASSERT3U(zl_intsize, ==, sizeof (uint64_t)); 4120 ASSERT3U(zl_ints, ==, 1); 4121 4122 VERIFY(zap_lookup(os, object, txgname, zl_intsize, 4123 zl_ints, &last_txg) == 0); 4124 4125 VERIFY(zap_length(os, object, propname, &zl_intsize, 4126 &zl_ints) == 0); 4127 4128 ASSERT3U(zl_intsize, ==, sizeof (uint64_t)); 4129 ASSERT3U(zl_ints, ==, ints); 4130 4131 VERIFY(zap_lookup(os, object, propname, zl_intsize, 4132 zl_ints, value) == 0); 4133 4134 for (i = 0; i < ints; i++) { 4135 ASSERT3U(value[i], ==, last_txg + object + i); 4136 } 4137 } else { 4138 ASSERT3U(error, ==, ENOENT); 4139 } 4140 4141 /* 4142 * Atomically update two entries in our zap object. 4143 * The first is named txg_%llu, and contains the txg 4144 * in which the property was last updated. The second 4145 * is named prop_%llu, and the nth element of its value 4146 * should be txg + object + n. 4147 */ 4148 tx = dmu_tx_create(os); 4149 dmu_tx_hold_zap(tx, object, B_TRUE, NULL); 4150 txg = ztest_tx_assign(tx, TXG_MIGHTWAIT, FTAG); 4151 if (txg == 0) 4152 return; 4153 4154 if (last_txg > txg) 4155 fatal(0, "zap future leak: old %llu new %llu", last_txg, txg); 4156 4157 for (i = 0; i < ints; i++) 4158 value[i] = txg + object + i; 4159 4160 VERIFY3U(0, ==, zap_update(os, object, txgname, sizeof (uint64_t), 4161 1, &txg, tx)); 4162 VERIFY3U(0, ==, zap_update(os, object, propname, sizeof (uint64_t), 4163 ints, value, tx)); 4164 4165 dmu_tx_commit(tx); 4166 4167 /* 4168 * Remove a random pair of entries. 4169 */ 4170 prop = ztest_random(ZTEST_ZAP_MAX_PROPS); 4171 (void) sprintf(propname, "prop_%llu", (u_longlong_t)prop); 4172 (void) sprintf(txgname, "txg_%llu", (u_longlong_t)prop); 4173 4174 error = zap_length(os, object, txgname, &zl_intsize, &zl_ints); 4175 4176 if (error == ENOENT) 4177 return; 4178 4179 ASSERT0(error); 4180 4181 tx = dmu_tx_create(os); 4182 dmu_tx_hold_zap(tx, object, B_TRUE, NULL); 4183 txg = ztest_tx_assign(tx, TXG_MIGHTWAIT, FTAG); 4184 if (txg == 0) 4185 return; 4186 VERIFY3U(0, ==, zap_remove(os, object, txgname, tx)); 4187 VERIFY3U(0, ==, zap_remove(os, object, propname, tx)); 4188 dmu_tx_commit(tx); 4189} 4190 4191/* 4192 * Testcase to test the upgrading of a microzap to fatzap. 4193 */ 4194void 4195ztest_fzap(ztest_ds_t *zd, uint64_t id) 4196{ 4197 objset_t *os = zd->zd_os; 4198 ztest_od_t od[1]; 4199 uint64_t object, txg; 4200 4201 ztest_od_init(&od[0], id, FTAG, 0, DMU_OT_ZAP_OTHER, 0, 0); 4202 4203 if (ztest_object_init(zd, od, sizeof (od), !ztest_random(2)) != 0) 4204 return; 4205 4206 object = od[0].od_object; 4207 4208 /* 4209 * Add entries to this ZAP and make sure it spills over 4210 * and gets upgraded to a fatzap. Also, since we are adding 4211 * 2050 entries we should see ptrtbl growth and leaf-block split. 4212 */ 4213 for (int i = 0; i < 2050; i++) { 4214 char name[MAXNAMELEN]; 4215 uint64_t value = i; 4216 dmu_tx_t *tx; 4217 int error; 4218 4219 (void) snprintf(name, sizeof (name), "fzap-%llu-%llu", 4220 id, value); 4221 4222 tx = dmu_tx_create(os); 4223 dmu_tx_hold_zap(tx, object, B_TRUE, name); 4224 txg = ztest_tx_assign(tx, TXG_MIGHTWAIT, FTAG); 4225 if (txg == 0) 4226 return; 4227 error = zap_add(os, object, name, sizeof (uint64_t), 1, 4228 &value, tx); 4229 ASSERT(error == 0 || error == EEXIST); 4230 dmu_tx_commit(tx); 4231 } 4232} 4233 4234/* ARGSUSED */ 4235void 4236ztest_zap_parallel(ztest_ds_t *zd, uint64_t id) 4237{ 4238 objset_t *os = zd->zd_os; 4239 ztest_od_t od[1]; 4240 uint64_t txg, object, count, wsize, wc, zl_wsize, zl_wc; 4241 dmu_tx_t *tx; 4242 int i, namelen, error; 4243 int micro = ztest_random(2); 4244 char name[20], string_value[20]; 4245 void *data; 4246 4247 ztest_od_init(&od[0], ID_PARALLEL, FTAG, micro, DMU_OT_ZAP_OTHER, 0, 0); 4248 4249 if (ztest_object_init(zd, od, sizeof (od), B_FALSE) != 0) 4250 return; 4251 4252 object = od[0].od_object; 4253 4254 /* 4255 * Generate a random name of the form 'xxx.....' where each 4256 * x is a random printable character and the dots are dots. 4257 * There are 94 such characters, and the name length goes from 4258 * 6 to 20, so there are 94^3 * 15 = 12,458,760 possible names. 4259 */ 4260 namelen = ztest_random(sizeof (name) - 5) + 5 + 1; 4261 4262 for (i = 0; i < 3; i++) 4263 name[i] = '!' + ztest_random('~' - '!' + 1); 4264 for (; i < namelen - 1; i++) 4265 name[i] = '.'; 4266 name[i] = '\0'; 4267 4268 if ((namelen & 1) || micro) { 4269 wsize = sizeof (txg); 4270 wc = 1; 4271 data = &txg; 4272 } else { 4273 wsize = 1; 4274 wc = namelen; 4275 data = string_value; 4276 } 4277 4278 count = -1ULL; 4279 VERIFY0(zap_count(os, object, &count)); 4280 ASSERT(count != -1ULL); 4281 4282 /* 4283 * Select an operation: length, lookup, add, update, remove. 4284 */ 4285 i = ztest_random(5); 4286 4287 if (i >= 2) { 4288 tx = dmu_tx_create(os); 4289 dmu_tx_hold_zap(tx, object, B_TRUE, NULL); 4290 txg = ztest_tx_assign(tx, TXG_MIGHTWAIT, FTAG); 4291 if (txg == 0) 4292 return; 4293 bcopy(name, string_value, namelen); 4294 } else { 4295 tx = NULL; 4296 txg = 0; 4297 bzero(string_value, namelen); 4298 } 4299 4300 switch (i) { 4301 4302 case 0: 4303 error = zap_length(os, object, name, &zl_wsize, &zl_wc); 4304 if (error == 0) { 4305 ASSERT3U(wsize, ==, zl_wsize); 4306 ASSERT3U(wc, ==, zl_wc); 4307 } else { 4308 ASSERT3U(error, ==, ENOENT); 4309 } 4310 break; 4311 4312 case 1: 4313 error = zap_lookup(os, object, name, wsize, wc, data); 4314 if (error == 0) { 4315 if (data == string_value && 4316 bcmp(name, data, namelen) != 0) 4317 fatal(0, "name '%s' != val '%s' len %d", 4318 name, data, namelen); 4319 } else { 4320 ASSERT3U(error, ==, ENOENT); 4321 } 4322 break; 4323 4324 case 2: 4325 error = zap_add(os, object, name, wsize, wc, data, tx); 4326 ASSERT(error == 0 || error == EEXIST); 4327 break; 4328 4329 case 3: 4330 VERIFY(zap_update(os, object, name, wsize, wc, data, tx) == 0); 4331 break; 4332 4333 case 4: 4334 error = zap_remove(os, object, name, tx); 4335 ASSERT(error == 0 || error == ENOENT); 4336 break; 4337 } 4338 4339 if (tx != NULL) 4340 dmu_tx_commit(tx); 4341} 4342 4343/* 4344 * Commit callback data. 4345 */ 4346typedef struct ztest_cb_data { 4347 list_node_t zcd_node; 4348 uint64_t zcd_txg; 4349 int zcd_expected_err; 4350 boolean_t zcd_added; 4351 boolean_t zcd_called; 4352 spa_t *zcd_spa; 4353} ztest_cb_data_t; 4354 4355/* This is the actual commit callback function */ 4356static void 4357ztest_commit_callback(void *arg, int error) 4358{ 4359 ztest_cb_data_t *data = arg; 4360 uint64_t synced_txg; 4361 4362 VERIFY(data != NULL); 4363 VERIFY3S(data->zcd_expected_err, ==, error); 4364 VERIFY(!data->zcd_called); 4365 4366 synced_txg = spa_last_synced_txg(data->zcd_spa); 4367 if (data->zcd_txg > synced_txg) 4368 fatal(0, "commit callback of txg %" PRIu64 " called prematurely" 4369 ", last synced txg = %" PRIu64 "\n", data->zcd_txg, 4370 synced_txg); 4371 4372 data->zcd_called = B_TRUE; 4373 4374 if (error == ECANCELED) { 4375 ASSERT0(data->zcd_txg); 4376 ASSERT(!data->zcd_added); 4377 4378 /* 4379 * The private callback data should be destroyed here, but 4380 * since we are going to check the zcd_called field after 4381 * dmu_tx_abort(), we will destroy it there. 4382 */ 4383 return; 4384 } 4385 4386 /* Was this callback added to the global callback list? */ 4387 if (!data->zcd_added) 4388 goto out; 4389 4390 ASSERT3U(data->zcd_txg, !=, 0); 4391 4392 /* Remove our callback from the list */ 4393 (void) mutex_lock(&zcl.zcl_callbacks_lock); 4394 list_remove(&zcl.zcl_callbacks, data); 4395 (void) mutex_unlock(&zcl.zcl_callbacks_lock); 4396 4397out: 4398 umem_free(data, sizeof (ztest_cb_data_t)); 4399} 4400 4401/* Allocate and initialize callback data structure */ 4402static ztest_cb_data_t * 4403ztest_create_cb_data(objset_t *os, uint64_t txg) 4404{ 4405 ztest_cb_data_t *cb_data; 4406 4407 cb_data = umem_zalloc(sizeof (ztest_cb_data_t), UMEM_NOFAIL); 4408 4409 cb_data->zcd_txg = txg; 4410 cb_data->zcd_spa = dmu_objset_spa(os); 4411 4412 return (cb_data); 4413} 4414 4415/* 4416 * If a number of txgs equal to this threshold have been created after a commit 4417 * callback has been registered but not called, then we assume there is an 4418 * implementation bug. 4419 */ 4420#define ZTEST_COMMIT_CALLBACK_THRESH (TXG_CONCURRENT_STATES + 2) 4421 4422/* 4423 * Commit callback test. 4424 */ 4425void 4426ztest_dmu_commit_callbacks(ztest_ds_t *zd, uint64_t id) 4427{ 4428 objset_t *os = zd->zd_os; 4429 ztest_od_t od[1]; 4430 dmu_tx_t *tx; 4431 ztest_cb_data_t *cb_data[3], *tmp_cb; 4432 uint64_t old_txg, txg; 4433 int i, error; 4434 4435 ztest_od_init(&od[0], id, FTAG, 0, DMU_OT_UINT64_OTHER, 0, 0); 4436 4437 if (ztest_object_init(zd, od, sizeof (od), B_FALSE) != 0) 4438 return; 4439 4440 tx = dmu_tx_create(os); 4441 4442 cb_data[0] = ztest_create_cb_data(os, 0); 4443 dmu_tx_callback_register(tx, ztest_commit_callback, cb_data[0]); 4444 4445 dmu_tx_hold_write(tx, od[0].od_object, 0, sizeof (uint64_t)); 4446 4447 /* Every once in a while, abort the transaction on purpose */ 4448 if (ztest_random(100) == 0) 4449 error = -1; 4450 4451 if (!error) 4452 error = dmu_tx_assign(tx, TXG_NOWAIT); 4453 4454 txg = error ? 0 : dmu_tx_get_txg(tx); 4455 4456 cb_data[0]->zcd_txg = txg; 4457 cb_data[1] = ztest_create_cb_data(os, txg); 4458 dmu_tx_callback_register(tx, ztest_commit_callback, cb_data[1]); 4459 4460 if (error) { 4461 /* 4462 * It's not a strict requirement to call the registered 4463 * callbacks from inside dmu_tx_abort(), but that's what 4464 * it's supposed to happen in the current implementation 4465 * so we will check for that. 4466 */ 4467 for (i = 0; i < 2; i++) { 4468 cb_data[i]->zcd_expected_err = ECANCELED; 4469 VERIFY(!cb_data[i]->zcd_called); 4470 } 4471 4472 dmu_tx_abort(tx); 4473 4474 for (i = 0; i < 2; i++) { 4475 VERIFY(cb_data[i]->zcd_called); 4476 umem_free(cb_data[i], sizeof (ztest_cb_data_t)); 4477 } 4478 4479 return; 4480 } 4481 4482 cb_data[2] = ztest_create_cb_data(os, txg); 4483 dmu_tx_callback_register(tx, ztest_commit_callback, cb_data[2]); 4484 4485 /* 4486 * Read existing data to make sure there isn't a future leak. 4487 */ 4488 VERIFY(0 == dmu_read(os, od[0].od_object, 0, sizeof (uint64_t), 4489 &old_txg, DMU_READ_PREFETCH)); 4490 4491 if (old_txg > txg) 4492 fatal(0, "future leak: got %" PRIu64 ", open txg is %" PRIu64, 4493 old_txg, txg); 4494 4495 dmu_write(os, od[0].od_object, 0, sizeof (uint64_t), &txg, tx); 4496 4497 (void) mutex_lock(&zcl.zcl_callbacks_lock); 4498 4499 /* 4500 * Since commit callbacks don't have any ordering requirement and since 4501 * it is theoretically possible for a commit callback to be called 4502 * after an arbitrary amount of time has elapsed since its txg has been 4503 * synced, it is difficult to reliably determine whether a commit 4504 * callback hasn't been called due to high load or due to a flawed 4505 * implementation. 4506 * 4507 * In practice, we will assume that if after a certain number of txgs a 4508 * commit callback hasn't been called, then most likely there's an 4509 * implementation bug.. 4510 */ 4511 tmp_cb = list_head(&zcl.zcl_callbacks); 4512 if (tmp_cb != NULL && 4513 (txg - ZTEST_COMMIT_CALLBACK_THRESH) > tmp_cb->zcd_txg) { 4514 fatal(0, "Commit callback threshold exceeded, oldest txg: %" 4515 PRIu64 ", open txg: %" PRIu64 "\n", tmp_cb->zcd_txg, txg); 4516 } 4517 4518 /* 4519 * Let's find the place to insert our callbacks. 4520 * 4521 * Even though the list is ordered by txg, it is possible for the 4522 * insertion point to not be the end because our txg may already be 4523 * quiescing at this point and other callbacks in the open txg 4524 * (from other objsets) may have sneaked in. 4525 */ 4526 tmp_cb = list_tail(&zcl.zcl_callbacks); 4527 while (tmp_cb != NULL && tmp_cb->zcd_txg > txg) 4528 tmp_cb = list_prev(&zcl.zcl_callbacks, tmp_cb); 4529 4530 /* Add the 3 callbacks to the list */ 4531 for (i = 0; i < 3; i++) { 4532 if (tmp_cb == NULL) 4533 list_insert_head(&zcl.zcl_callbacks, cb_data[i]); 4534 else 4535 list_insert_after(&zcl.zcl_callbacks, tmp_cb, 4536 cb_data[i]); 4537 4538 cb_data[i]->zcd_added = B_TRUE; 4539 VERIFY(!cb_data[i]->zcd_called); 4540 4541 tmp_cb = cb_data[i]; 4542 } 4543 4544 (void) mutex_unlock(&zcl.zcl_callbacks_lock); 4545 4546 dmu_tx_commit(tx); 4547} 4548 4549/* ARGSUSED */ 4550void 4551ztest_dsl_prop_get_set(ztest_ds_t *zd, uint64_t id) 4552{ 4553 zfs_prop_t proplist[] = { 4554 ZFS_PROP_CHECKSUM, 4555 ZFS_PROP_COMPRESSION, 4556 ZFS_PROP_COPIES, 4557 ZFS_PROP_DEDUP 4558 }; 4559 4560 (void) rw_rdlock(&ztest_name_lock); 4561 4562 for (int p = 0; p < sizeof (proplist) / sizeof (proplist[0]); p++) 4563 (void) ztest_dsl_prop_set_uint64(zd->zd_name, proplist[p], 4564 ztest_random_dsl_prop(proplist[p]), (int)ztest_random(2)); 4565 4566 (void) rw_unlock(&ztest_name_lock); 4567} 4568 4569/* ARGSUSED */ 4570void 4571ztest_spa_prop_get_set(ztest_ds_t *zd, uint64_t id) 4572{ 4573 nvlist_t *props = NULL; 4574 4575 (void) rw_rdlock(&ztest_name_lock); 4576 4577 (void) ztest_spa_prop_set_uint64(ZPOOL_PROP_DEDUPDITTO, 4578 ZIO_DEDUPDITTO_MIN + ztest_random(ZIO_DEDUPDITTO_MIN)); 4579 4580 VERIFY0(spa_prop_get(ztest_spa, &props)); 4581 4582 if (ztest_opts.zo_verbose >= 6) 4583 dump_nvlist(props, 4); 4584 4585 nvlist_free(props); 4586 4587 (void) rw_unlock(&ztest_name_lock); 4588} 4589 4590static int 4591user_release_one(const char *snapname, const char *holdname) 4592{ 4593 nvlist_t *snaps, *holds; 4594 int error; 4595 4596 snaps = fnvlist_alloc(); 4597 holds = fnvlist_alloc(); 4598 fnvlist_add_boolean(holds, holdname); 4599 fnvlist_add_nvlist(snaps, snapname, holds); 4600 fnvlist_free(holds); 4601 error = dsl_dataset_user_release(snaps, NULL); 4602 fnvlist_free(snaps); 4603 return (error); 4604} 4605 4606/* 4607 * Test snapshot hold/release and deferred destroy. 4608 */ 4609void 4610ztest_dmu_snapshot_hold(ztest_ds_t *zd, uint64_t id) 4611{ 4612 int error; 4613 objset_t *os = zd->zd_os; 4614 objset_t *origin; 4615 char snapname[100]; 4616 char fullname[100]; 4617 char clonename[100]; 4618 char tag[100]; 4619 char osname[MAXNAMELEN]; 4620 nvlist_t *holds; 4621 4622 (void) rw_rdlock(&ztest_name_lock); 4623 4624 dmu_objset_name(os, osname); 4625 4626 (void) snprintf(snapname, sizeof (snapname), "sh1_%llu", id); 4627 (void) snprintf(fullname, sizeof (fullname), "%s@%s", osname, snapname); 4628 (void) snprintf(clonename, sizeof (clonename), 4629 "%s/ch1_%llu", osname, id); 4630 (void) snprintf(tag, sizeof (tag), "tag_%llu", id); 4631 4632 /* 4633 * Clean up from any previous run. 4634 */ 4635 error = dsl_destroy_head(clonename); 4636 if (error != ENOENT) 4637 ASSERT0(error); 4638 error = user_release_one(fullname, tag); 4639 if (error != ESRCH && error != ENOENT) 4640 ASSERT0(error); 4641 error = dsl_destroy_snapshot(fullname, B_FALSE); 4642 if (error != ENOENT) 4643 ASSERT0(error); 4644 4645 /* 4646 * Create snapshot, clone it, mark snap for deferred destroy, 4647 * destroy clone, verify snap was also destroyed. 4648 */ 4649 error = dmu_objset_snapshot_one(osname, snapname); 4650 if (error) { 4651 if (error == ENOSPC) { 4652 ztest_record_enospc("dmu_objset_snapshot"); 4653 goto out; 4654 } 4655 fatal(0, "dmu_objset_snapshot(%s) = %d", fullname, error); 4656 } 4657 4658 error = dmu_objset_clone(clonename, fullname); 4659 if (error) { 4660 if (error == ENOSPC) { 4661 ztest_record_enospc("dmu_objset_clone"); 4662 goto out; 4663 } 4664 fatal(0, "dmu_objset_clone(%s) = %d", clonename, error); 4665 } 4666 4667 error = dsl_destroy_snapshot(fullname, B_TRUE); 4668 if (error) { 4669 fatal(0, "dsl_destroy_snapshot(%s, B_TRUE) = %d", 4670 fullname, error); 4671 } 4672 4673 error = dsl_destroy_head(clonename); 4674 if (error) 4675 fatal(0, "dsl_destroy_head(%s) = %d", clonename, error); 4676 4677 error = dmu_objset_hold(fullname, FTAG, &origin); 4678 if (error != ENOENT) 4679 fatal(0, "dmu_objset_hold(%s) = %d", fullname, error); 4680 4681 /* 4682 * Create snapshot, add temporary hold, verify that we can't 4683 * destroy a held snapshot, mark for deferred destroy, 4684 * release hold, verify snapshot was destroyed. 4685 */ 4686 error = dmu_objset_snapshot_one(osname, snapname); 4687 if (error) { 4688 if (error == ENOSPC) { 4689 ztest_record_enospc("dmu_objset_snapshot"); 4690 goto out; 4691 } 4692 fatal(0, "dmu_objset_snapshot(%s) = %d", fullname, error); 4693 } 4694 4695 holds = fnvlist_alloc(); 4696 fnvlist_add_string(holds, fullname, tag); 4697 error = dsl_dataset_user_hold(holds, 0, NULL); 4698 fnvlist_free(holds); 4699 4700 if (error) 4701 fatal(0, "dsl_dataset_user_hold(%s)", fullname, tag); 4702 4703 error = dsl_destroy_snapshot(fullname, B_FALSE); 4704 if (error != EBUSY) { 4705 fatal(0, "dsl_destroy_snapshot(%s, B_FALSE) = %d", 4706 fullname, error); 4707 } 4708 4709 error = dsl_destroy_snapshot(fullname, B_TRUE); 4710 if (error) { 4711 fatal(0, "dsl_destroy_snapshot(%s, B_TRUE) = %d", 4712 fullname, error); 4713 } 4714 4715 error = user_release_one(fullname, tag); 4716 if (error) 4717 fatal(0, "user_release_one(%s, %s) = %d", fullname, tag, error); 4718 4719 VERIFY3U(dmu_objset_hold(fullname, FTAG, &origin), ==, ENOENT); 4720 4721out: 4722 (void) rw_unlock(&ztest_name_lock); 4723} 4724 4725/* 4726 * Inject random faults into the on-disk data. 4727 */ 4728/* ARGSUSED */ 4729void 4730ztest_fault_inject(ztest_ds_t *zd, uint64_t id) 4731{ 4732 ztest_shared_t *zs = ztest_shared; 4733 spa_t *spa = ztest_spa; 4734 int fd; 4735 uint64_t offset; 4736 uint64_t leaves; 4737 uint64_t bad = 0x1990c0ffeedecadeULL; 4738 uint64_t top, leaf; 4739 char path0[MAXPATHLEN]; 4740 char pathrand[MAXPATHLEN]; 4741 size_t fsize; 4742 int bshift = SPA_MAXBLOCKSHIFT + 2; /* don't scrog all labels */ 4743 int iters = 1000; 4744 int maxfaults; 4745 int mirror_save; 4746 vdev_t *vd0 = NULL; 4747 uint64_t guid0 = 0; 4748 boolean_t islog = B_FALSE; 4749 4750 VERIFY(mutex_lock(&ztest_vdev_lock) == 0); 4751 maxfaults = MAXFAULTS(); 4752 leaves = MAX(zs->zs_mirrors, 1) * ztest_opts.zo_raidz; 4753 mirror_save = zs->zs_mirrors; 4754 VERIFY(mutex_unlock(&ztest_vdev_lock) == 0); 4755 4756 ASSERT(leaves >= 1); 4757 4758 /* 4759 * We need SCL_STATE here because we're going to look at vd0->vdev_tsd. 4760 */ 4761 spa_config_enter(spa, SCL_STATE, FTAG, RW_READER); 4762 4763 if (ztest_random(2) == 0) { 4764 /* 4765 * Inject errors on a normal data device or slog device. 4766 */ 4767 top = ztest_random_vdev_top(spa, B_TRUE); 4768 leaf = ztest_random(leaves) + zs->zs_splits; 4769 4770 /* 4771 * Generate paths to the first leaf in this top-level vdev, 4772 * and to the random leaf we selected. We'll induce transient 4773 * write failures and random online/offline activity on leaf 0, 4774 * and we'll write random garbage to the randomly chosen leaf. 4775 */ 4776 (void) snprintf(path0, sizeof (path0), ztest_dev_template, 4777 ztest_opts.zo_dir, ztest_opts.zo_pool, 4778 top * leaves + zs->zs_splits); 4779 (void) snprintf(pathrand, sizeof (pathrand), ztest_dev_template, 4780 ztest_opts.zo_dir, ztest_opts.zo_pool, 4781 top * leaves + leaf); 4782 4783 vd0 = vdev_lookup_by_path(spa->spa_root_vdev, path0); 4784 if (vd0 != NULL && vd0->vdev_top->vdev_islog) 4785 islog = B_TRUE; 4786 4787 if (vd0 != NULL && maxfaults != 1) { 4788 /* 4789 * Make vd0 explicitly claim to be unreadable, 4790 * or unwriteable, or reach behind its back 4791 * and close the underlying fd. We can do this if 4792 * maxfaults == 0 because we'll fail and reexecute, 4793 * and we can do it if maxfaults >= 2 because we'll 4794 * have enough redundancy. If maxfaults == 1, the 4795 * combination of this with injection of random data 4796 * corruption below exceeds the pool's fault tolerance. 4797 */ 4798 vdev_file_t *vf = vd0->vdev_tsd; 4799 4800 if (vf != NULL && ztest_random(3) == 0) { 4801 (void) close(vf->vf_vnode->v_fd); 4802 vf->vf_vnode->v_fd = -1; 4803 } else if (ztest_random(2) == 0) { 4804 vd0->vdev_cant_read = B_TRUE; 4805 } else { 4806 vd0->vdev_cant_write = B_TRUE; 4807 } 4808 guid0 = vd0->vdev_guid; 4809 } 4810 } else { 4811 /* 4812 * Inject errors on an l2cache device. 4813 */ 4814 spa_aux_vdev_t *sav = &spa->spa_l2cache; 4815 4816 if (sav->sav_count == 0) { 4817 spa_config_exit(spa, SCL_STATE, FTAG); 4818 return; 4819 } 4820 vd0 = sav->sav_vdevs[ztest_random(sav->sav_count)]; 4821 guid0 = vd0->vdev_guid; 4822 (void) strcpy(path0, vd0->vdev_path); 4823 (void) strcpy(pathrand, vd0->vdev_path); 4824 4825 leaf = 0; 4826 leaves = 1; 4827 maxfaults = INT_MAX; /* no limit on cache devices */ 4828 } 4829 4830 spa_config_exit(spa, SCL_STATE, FTAG); 4831 4832 /* 4833 * If we can tolerate two or more faults, or we're dealing 4834 * with a slog, randomly online/offline vd0. 4835 */ 4836 if ((maxfaults >= 2 || islog) && guid0 != 0) { 4837 if (ztest_random(10) < 6) { 4838 int flags = (ztest_random(2) == 0 ? 4839 ZFS_OFFLINE_TEMPORARY : 0); 4840 4841 /* 4842 * We have to grab the zs_name_lock as writer to 4843 * prevent a race between offlining a slog and 4844 * destroying a dataset. Offlining the slog will 4845 * grab a reference on the dataset which may cause 4846 * dmu_objset_destroy() to fail with EBUSY thus 4847 * leaving the dataset in an inconsistent state. 4848 */ 4849 if (islog) 4850 (void) rw_wrlock(&ztest_name_lock); 4851 4852 VERIFY(vdev_offline(spa, guid0, flags) != EBUSY); 4853 4854 if (islog) 4855 (void) rw_unlock(&ztest_name_lock); 4856 } else { 4857 /* 4858 * Ideally we would like to be able to randomly 4859 * call vdev_[on|off]line without holding locks 4860 * to force unpredictable failures but the side 4861 * effects of vdev_[on|off]line prevent us from 4862 * doing so. We grab the ztest_vdev_lock here to 4863 * prevent a race between injection testing and 4864 * aux_vdev removal. 4865 */ 4866 VERIFY(mutex_lock(&ztest_vdev_lock) == 0); 4867 (void) vdev_online(spa, guid0, 0, NULL); 4868 VERIFY(mutex_unlock(&ztest_vdev_lock) == 0); 4869 } 4870 } 4871 4872 if (maxfaults == 0) 4873 return; 4874 4875 /* 4876 * We have at least single-fault tolerance, so inject data corruption. 4877 */ 4878 fd = open(pathrand, O_RDWR); 4879 4880 if (fd == -1) /* we hit a gap in the device namespace */ 4881 return; 4882 4883 fsize = lseek(fd, 0, SEEK_END); 4884 4885 while (--iters != 0) { 4886 offset = ztest_random(fsize / (leaves << bshift)) * 4887 (leaves << bshift) + (leaf << bshift) + 4888 (ztest_random(1ULL << (bshift - 1)) & -8ULL); 4889 4890 if (offset >= fsize) 4891 continue; 4892 4893 VERIFY(mutex_lock(&ztest_vdev_lock) == 0); 4894 if (mirror_save != zs->zs_mirrors) { 4895 VERIFY(mutex_unlock(&ztest_vdev_lock) == 0); 4896 (void) close(fd); 4897 return; 4898 } 4899 4900 if (pwrite(fd, &bad, sizeof (bad), offset) != sizeof (bad)) 4901 fatal(1, "can't inject bad word at 0x%llx in %s", 4902 offset, pathrand); 4903 4904 VERIFY(mutex_unlock(&ztest_vdev_lock) == 0); 4905 4906 if (ztest_opts.zo_verbose >= 7) 4907 (void) printf("injected bad word into %s," 4908 " offset 0x%llx\n", pathrand, (u_longlong_t)offset); 4909 } 4910 4911 (void) close(fd); 4912} 4913 4914/* 4915 * Verify that DDT repair works as expected. 4916 */ 4917void 4918ztest_ddt_repair(ztest_ds_t *zd, uint64_t id) 4919{ 4920 ztest_shared_t *zs = ztest_shared; 4921 spa_t *spa = ztest_spa; 4922 objset_t *os = zd->zd_os; 4923 ztest_od_t od[1]; 4924 uint64_t object, blocksize, txg, pattern, psize; 4925 enum zio_checksum checksum = spa_dedup_checksum(spa); 4926 dmu_buf_t *db; 4927 dmu_tx_t *tx; 4928 void *buf; 4929 blkptr_t blk; 4930 int copies = 2 * ZIO_DEDUPDITTO_MIN; 4931 4932 blocksize = ztest_random_blocksize(); 4933 blocksize = MIN(blocksize, 2048); /* because we write so many */ 4934 4935 ztest_od_init(&od[0], id, FTAG, 0, DMU_OT_UINT64_OTHER, blocksize, 0); 4936 4937 if (ztest_object_init(zd, od, sizeof (od), B_FALSE) != 0) 4938 return; 4939 4940 /* 4941 * Take the name lock as writer to prevent anyone else from changing 4942 * the pool and dataset properies we need to maintain during this test. 4943 */ 4944 (void) rw_wrlock(&ztest_name_lock); 4945 4946 if (ztest_dsl_prop_set_uint64(zd->zd_name, ZFS_PROP_DEDUP, checksum, 4947 B_FALSE) != 0 || 4948 ztest_dsl_prop_set_uint64(zd->zd_name, ZFS_PROP_COPIES, 1, 4949 B_FALSE) != 0) { 4950 (void) rw_unlock(&ztest_name_lock); 4951 return; 4952 } 4953 4954 object = od[0].od_object; 4955 blocksize = od[0].od_blocksize; 4956 pattern = zs->zs_guid ^ dmu_objset_fsid_guid(os); 4957 4958 ASSERT(object != 0); 4959 4960 tx = dmu_tx_create(os); 4961 dmu_tx_hold_write(tx, object, 0, copies * blocksize); 4962 txg = ztest_tx_assign(tx, TXG_WAIT, FTAG); 4963 if (txg == 0) { 4964 (void) rw_unlock(&ztest_name_lock); 4965 return; 4966 } 4967 4968 /* 4969 * Write all the copies of our block. 4970 */ 4971 for (int i = 0; i < copies; i++) { 4972 uint64_t offset = i * blocksize; 4973 int error = dmu_buf_hold(os, object, offset, FTAG, &db, 4974 DMU_READ_NO_PREFETCH); 4975 if (error != 0) { 4976 fatal(B_FALSE, "dmu_buf_hold(%p, %llu, %llu) = %u", 4977 os, (long long)object, (long long) offset, error); 4978 } 4979 ASSERT(db->db_offset == offset); 4980 ASSERT(db->db_size == blocksize); 4981 ASSERT(ztest_pattern_match(db->db_data, db->db_size, pattern) || 4982 ztest_pattern_match(db->db_data, db->db_size, 0ULL)); 4983 dmu_buf_will_fill(db, tx); 4984 ztest_pattern_set(db->db_data, db->db_size, pattern); 4985 dmu_buf_rele(db, FTAG); 4986 } 4987 4988 dmu_tx_commit(tx); 4989 txg_wait_synced(spa_get_dsl(spa), txg); 4990 4991 /* 4992 * Find out what block we got. 4993 */ 4994 VERIFY0(dmu_buf_hold(os, object, 0, FTAG, &db, 4995 DMU_READ_NO_PREFETCH)); 4996 blk = *((dmu_buf_impl_t *)db)->db_blkptr; 4997 dmu_buf_rele(db, FTAG); 4998 4999 /* 5000 * Damage the block. Dedup-ditto will save us when we read it later. 5001 */ 5002 psize = BP_GET_PSIZE(&blk); 5003 buf = zio_buf_alloc(psize); 5004 ztest_pattern_set(buf, psize, ~pattern); 5005 5006 (void) zio_wait(zio_rewrite(NULL, spa, 0, &blk, 5007 buf, psize, NULL, NULL, ZIO_PRIORITY_SYNC_WRITE, 5008 ZIO_FLAG_CANFAIL | ZIO_FLAG_INDUCE_DAMAGE, NULL)); 5009 5010 zio_buf_free(buf, psize); 5011 5012 (void) rw_unlock(&ztest_name_lock); 5013} 5014 5015/* 5016 * Scrub the pool. 5017 */ 5018/* ARGSUSED */ 5019void 5020ztest_scrub(ztest_ds_t *zd, uint64_t id) 5021{ 5022 spa_t *spa = ztest_spa; 5023 5024 (void) spa_scan(spa, POOL_SCAN_SCRUB); 5025 (void) poll(NULL, 0, 100); /* wait a moment, then force a restart */ 5026 (void) spa_scan(spa, POOL_SCAN_SCRUB); 5027} 5028 5029/* 5030 * Change the guid for the pool. 5031 */ 5032/* ARGSUSED */ 5033void 5034ztest_reguid(ztest_ds_t *zd, uint64_t id) 5035{ 5036 spa_t *spa = ztest_spa; 5037 uint64_t orig, load; 5038 int error; 5039 5040 orig = spa_guid(spa); 5041 load = spa_load_guid(spa); 5042 5043 (void) rw_wrlock(&ztest_name_lock); 5044 error = spa_change_guid(spa); 5045 (void) rw_unlock(&ztest_name_lock); 5046 5047 if (error != 0) 5048 return; 5049 5050 if (ztest_opts.zo_verbose >= 4) { 5051 (void) printf("Changed guid old %llu -> %llu\n", 5052 (u_longlong_t)orig, (u_longlong_t)spa_guid(spa)); 5053 } 5054 5055 VERIFY3U(orig, !=, spa_guid(spa)); 5056 VERIFY3U(load, ==, spa_load_guid(spa)); 5057} 5058 5059/* 5060 * Rename the pool to a different name and then rename it back. 5061 */ 5062/* ARGSUSED */ 5063void 5064ztest_spa_rename(ztest_ds_t *zd, uint64_t id) 5065{ 5066 char *oldname, *newname; 5067 spa_t *spa; 5068 5069 (void) rw_wrlock(&ztest_name_lock); 5070 5071 oldname = ztest_opts.zo_pool; 5072 newname = umem_alloc(strlen(oldname) + 5, UMEM_NOFAIL); 5073 (void) strcpy(newname, oldname); 5074 (void) strcat(newname, "_tmp"); 5075 5076 /* 5077 * Do the rename 5078 */ 5079 VERIFY3U(0, ==, spa_rename(oldname, newname)); 5080 5081 /* 5082 * Try to open it under the old name, which shouldn't exist 5083 */ 5084 VERIFY3U(ENOENT, ==, spa_open(oldname, &spa, FTAG)); 5085 5086 /* 5087 * Open it under the new name and make sure it's still the same spa_t. 5088 */ 5089 VERIFY3U(0, ==, spa_open(newname, &spa, FTAG)); 5090 5091 ASSERT(spa == ztest_spa); 5092 spa_close(spa, FTAG); 5093 5094 /* 5095 * Rename it back to the original 5096 */ 5097 VERIFY3U(0, ==, spa_rename(newname, oldname)); 5098 5099 /* 5100 * Make sure it can still be opened 5101 */ 5102 VERIFY3U(0, ==, spa_open(oldname, &spa, FTAG)); 5103 5104 ASSERT(spa == ztest_spa); 5105 spa_close(spa, FTAG); 5106 5107 umem_free(newname, strlen(newname) + 1); 5108 5109 (void) rw_unlock(&ztest_name_lock); 5110} 5111 5112/* 5113 * Verify pool integrity by running zdb. 5114 */ 5115static void 5116ztest_run_zdb(char *pool) 5117{ 5118 int status; 5119 char zdb[MAXPATHLEN + MAXNAMELEN + 20]; 5120 char zbuf[1024]; 5121 char *bin; 5122 char *ztest; 5123 char *isa; 5124 int isalen; 5125 FILE *fp; 5126 5127 strlcpy(zdb, "/usr/bin/ztest", sizeof(zdb)); 5128 5129 /* zdb lives in /usr/sbin, while ztest lives in /usr/bin */ 5130 bin = strstr(zdb, "/usr/bin/"); 5131 ztest = strstr(bin, "/ztest"); 5132 isa = bin + 8; 5133 isalen = ztest - isa; 5134 isa = strdup(isa); 5135 /* LINTED */ 5136 (void) sprintf(bin, 5137 "/usr/sbin%.*s/zdb -bcc%s%s -U %s %s", 5138 isalen, 5139 isa, 5140 ztest_opts.zo_verbose >= 3 ? "s" : "", 5141 ztest_opts.zo_verbose >= 4 ? "v" : "", 5142 spa_config_path, 5143 pool); 5144 free(isa); 5145 5146 if (ztest_opts.zo_verbose >= 5) 5147 (void) printf("Executing %s\n", strstr(zdb, "zdb ")); 5148 5149 fp = popen(zdb, "r"); 5150 assert(fp != NULL); 5151 5152 while (fgets(zbuf, sizeof (zbuf), fp) != NULL) 5153 if (ztest_opts.zo_verbose >= 3) 5154 (void) printf("%s", zbuf); 5155 5156 status = pclose(fp); 5157 5158 if (status == 0) 5159 return; 5160 5161 ztest_dump_core = 0; 5162 if (WIFEXITED(status)) 5163 fatal(0, "'%s' exit code %d", zdb, WEXITSTATUS(status)); 5164 else 5165 fatal(0, "'%s' died with signal %d", zdb, WTERMSIG(status)); 5166} 5167 5168static void 5169ztest_walk_pool_directory(char *header) 5170{ 5171 spa_t *spa = NULL; 5172 5173 if (ztest_opts.zo_verbose >= 6) 5174 (void) printf("%s\n", header); 5175 5176 mutex_enter(&spa_namespace_lock); 5177 while ((spa = spa_next(spa)) != NULL) 5178 if (ztest_opts.zo_verbose >= 6) 5179 (void) printf("\t%s\n", spa_name(spa)); 5180 mutex_exit(&spa_namespace_lock); 5181} 5182 5183static void 5184ztest_spa_import_export(char *oldname, char *newname) 5185{ 5186 nvlist_t *config, *newconfig; 5187 uint64_t pool_guid; 5188 spa_t *spa; 5189 int error; 5190 5191 if (ztest_opts.zo_verbose >= 4) { 5192 (void) printf("import/export: old = %s, new = %s\n", 5193 oldname, newname); 5194 } 5195 5196 /* 5197 * Clean up from previous runs. 5198 */ 5199 (void) spa_destroy(newname); 5200 5201 /* 5202 * Get the pool's configuration and guid. 5203 */ 5204 VERIFY3U(0, ==, spa_open(oldname, &spa, FTAG)); 5205 5206 /* 5207 * Kick off a scrub to tickle scrub/export races. 5208 */ 5209 if (ztest_random(2) == 0) 5210 (void) spa_scan(spa, POOL_SCAN_SCRUB); 5211 5212 pool_guid = spa_guid(spa); 5213 spa_close(spa, FTAG); 5214 5215 ztest_walk_pool_directory("pools before export"); 5216 5217 /* 5218 * Export it. 5219 */ 5220 VERIFY3U(0, ==, spa_export(oldname, &config, B_FALSE, B_FALSE)); 5221 5222 ztest_walk_pool_directory("pools after export"); 5223 5224 /* 5225 * Try to import it. 5226 */ 5227 newconfig = spa_tryimport(config); 5228 ASSERT(newconfig != NULL); 5229 nvlist_free(newconfig); 5230 5231 /* 5232 * Import it under the new name. 5233 */ 5234 error = spa_import(newname, config, NULL, 0); 5235 if (error != 0) { 5236 dump_nvlist(config, 0); 5237 fatal(B_FALSE, "couldn't import pool %s as %s: error %u", 5238 oldname, newname, error); 5239 } 5240 5241 ztest_walk_pool_directory("pools after import"); 5242 5243 /* 5244 * Try to import it again -- should fail with EEXIST. 5245 */ 5246 VERIFY3U(EEXIST, ==, spa_import(newname, config, NULL, 0)); 5247 5248 /* 5249 * Try to import it under a different name -- should fail with EEXIST. 5250 */ 5251 VERIFY3U(EEXIST, ==, spa_import(oldname, config, NULL, 0)); 5252 5253 /* 5254 * Verify that the pool is no longer visible under the old name. 5255 */ 5256 VERIFY3U(ENOENT, ==, spa_open(oldname, &spa, FTAG)); 5257 5258 /* 5259 * Verify that we can open and close the pool using the new name. 5260 */ 5261 VERIFY3U(0, ==, spa_open(newname, &spa, FTAG)); 5262 ASSERT(pool_guid == spa_guid(spa)); 5263 spa_close(spa, FTAG); 5264 5265 nvlist_free(config); 5266} 5267 5268static void 5269ztest_resume(spa_t *spa) 5270{ 5271 if (spa_suspended(spa) && ztest_opts.zo_verbose >= 6) 5272 (void) printf("resuming from suspended state\n"); 5273 spa_vdev_state_enter(spa, SCL_NONE); 5274 vdev_clear(spa, NULL); 5275 (void) spa_vdev_state_exit(spa, NULL, 0); 5276 (void) zio_resume(spa); 5277} 5278 5279static void * 5280ztest_resume_thread(void *arg) 5281{ 5282 spa_t *spa = arg; 5283 5284 while (!ztest_exiting) { 5285 if (spa_suspended(spa)) 5286 ztest_resume(spa); 5287 (void) poll(NULL, 0, 100); 5288 } 5289 return (NULL); 5290} 5291 5292static void * 5293ztest_deadman_thread(void *arg) 5294{ 5295 ztest_shared_t *zs = arg; 5296 int grace = 300; 5297 hrtime_t delta; 5298 5299 delta = (zs->zs_thread_stop - zs->zs_thread_start) / NANOSEC + grace; 5300 5301 (void) poll(NULL, 0, (int)(1000 * delta)); 5302 5303 fatal(0, "failed to complete within %d seconds of deadline", grace); 5304 5305 return (NULL); 5306} 5307 5308static void 5309ztest_execute(int test, ztest_info_t *zi, uint64_t id) 5310{ 5311 ztest_ds_t *zd = &ztest_ds[id % ztest_opts.zo_datasets]; 5312 ztest_shared_callstate_t *zc = ZTEST_GET_SHARED_CALLSTATE(test); 5313 hrtime_t functime = gethrtime(); 5314 5315 for (int i = 0; i < zi->zi_iters; i++) 5316 zi->zi_func(zd, id); 5317 5318 functime = gethrtime() - functime; 5319 5320 atomic_add_64(&zc->zc_count, 1); 5321 atomic_add_64(&zc->zc_time, functime); 5322 5323 if (ztest_opts.zo_verbose >= 4) { 5324 Dl_info dli; 5325 (void) dladdr((void *)zi->zi_func, &dli); 5326 (void) printf("%6.2f sec in %s\n", 5327 (double)functime / NANOSEC, dli.dli_sname); 5328 } 5329} 5330 5331static void * 5332ztest_thread(void *arg) 5333{ 5334 int rand; 5335 uint64_t id = (uintptr_t)arg; 5336 ztest_shared_t *zs = ztest_shared; 5337 uint64_t call_next; 5338 hrtime_t now; 5339 ztest_info_t *zi; 5340 ztest_shared_callstate_t *zc; 5341 5342 while ((now = gethrtime()) < zs->zs_thread_stop) { 5343 /* 5344 * See if it's time to force a crash. 5345 */ 5346 if (now > zs->zs_thread_kill) 5347 ztest_kill(zs); 5348 5349 /* 5350 * If we're getting ENOSPC with some regularity, stop. 5351 */ 5352 if (zs->zs_enospc_count > 10) 5353 break; 5354 5355 /* 5356 * Pick a random function to execute. 5357 */ 5358 rand = ztest_random(ZTEST_FUNCS); 5359 zi = &ztest_info[rand]; 5360 zc = ZTEST_GET_SHARED_CALLSTATE(rand); 5361 call_next = zc->zc_next; 5362 5363 if (now >= call_next && 5364 atomic_cas_64(&zc->zc_next, call_next, call_next + 5365 ztest_random(2 * zi->zi_interval[0] + 1)) == call_next) { 5366 ztest_execute(rand, zi, id); 5367 } 5368 } 5369 5370 return (NULL); 5371} 5372 5373static void 5374ztest_dataset_name(char *dsname, char *pool, int d) 5375{ 5376 (void) snprintf(dsname, MAXNAMELEN, "%s/ds_%d", pool, d); 5377} 5378 5379static void 5380ztest_dataset_destroy(int d) 5381{ 5382 char name[MAXNAMELEN]; 5383 5384 ztest_dataset_name(name, ztest_opts.zo_pool, d); 5385 5386 if (ztest_opts.zo_verbose >= 3) 5387 (void) printf("Destroying %s to free up space\n", name); 5388 5389 /* 5390 * Cleanup any non-standard clones and snapshots. In general, 5391 * ztest thread t operates on dataset (t % zopt_datasets), 5392 * so there may be more than one thing to clean up. 5393 */ 5394 for (int t = d; t < ztest_opts.zo_threads; 5395 t += ztest_opts.zo_datasets) { 5396 ztest_dsl_dataset_cleanup(name, t); 5397 } 5398 5399 (void) dmu_objset_find(name, ztest_objset_destroy_cb, NULL, 5400 DS_FIND_SNAPSHOTS | DS_FIND_CHILDREN); 5401} 5402 5403static void 5404ztest_dataset_dirobj_verify(ztest_ds_t *zd) 5405{ 5406 uint64_t usedobjs, dirobjs, scratch; 5407 5408 /* 5409 * ZTEST_DIROBJ is the object directory for the entire dataset. 5410 * Therefore, the number of objects in use should equal the 5411 * number of ZTEST_DIROBJ entries, +1 for ZTEST_DIROBJ itself. 5412 * If not, we have an object leak. 5413 * 5414 * Note that we can only check this in ztest_dataset_open(), 5415 * when the open-context and syncing-context values agree. 5416 * That's because zap_count() returns the open-context value, 5417 * while dmu_objset_space() returns the rootbp fill count. 5418 */ 5419 VERIFY3U(0, ==, zap_count(zd->zd_os, ZTEST_DIROBJ, &dirobjs)); 5420 dmu_objset_space(zd->zd_os, &scratch, &scratch, &usedobjs, &scratch); 5421 ASSERT3U(dirobjs + 1, ==, usedobjs); 5422} 5423 5424static int 5425ztest_dataset_open(int d) 5426{ 5427 ztest_ds_t *zd = &ztest_ds[d]; 5428 uint64_t committed_seq = ZTEST_GET_SHARED_DS(d)->zd_seq; 5429 objset_t *os; 5430 zilog_t *zilog; 5431 char name[MAXNAMELEN]; 5432 int error; 5433 5434 ztest_dataset_name(name, ztest_opts.zo_pool, d); 5435 5436 (void) rw_rdlock(&ztest_name_lock); 5437 5438 error = ztest_dataset_create(name); 5439 if (error == ENOSPC) { 5440 (void) rw_unlock(&ztest_name_lock); 5441 ztest_record_enospc(FTAG); 5442 return (error); 5443 } 5444 ASSERT(error == 0 || error == EEXIST); 5445 5446 VERIFY0(dmu_objset_own(name, DMU_OST_OTHER, B_FALSE, zd, &os)); 5447 (void) rw_unlock(&ztest_name_lock); 5448 5449 ztest_zd_init(zd, ZTEST_GET_SHARED_DS(d), os); 5450 5451 zilog = zd->zd_zilog; 5452 5453 if (zilog->zl_header->zh_claim_lr_seq != 0 && 5454 zilog->zl_header->zh_claim_lr_seq < committed_seq) 5455 fatal(0, "missing log records: claimed %llu < committed %llu", 5456 zilog->zl_header->zh_claim_lr_seq, committed_seq); 5457 5458 ztest_dataset_dirobj_verify(zd); 5459 5460 zil_replay(os, zd, ztest_replay_vector); 5461 5462 ztest_dataset_dirobj_verify(zd); 5463 5464 if (ztest_opts.zo_verbose >= 6) 5465 (void) printf("%s replay %llu blocks, %llu records, seq %llu\n", 5466 zd->zd_name, 5467 (u_longlong_t)zilog->zl_parse_blk_count, 5468 (u_longlong_t)zilog->zl_parse_lr_count, 5469 (u_longlong_t)zilog->zl_replaying_seq); 5470 5471 zilog = zil_open(os, ztest_get_data); 5472 5473 if (zilog->zl_replaying_seq != 0 && 5474 zilog->zl_replaying_seq < committed_seq) 5475 fatal(0, "missing log records: replayed %llu < committed %llu", 5476 zilog->zl_replaying_seq, committed_seq); 5477 5478 return (0); 5479} 5480 5481static void 5482ztest_dataset_close(int d) 5483{ 5484 ztest_ds_t *zd = &ztest_ds[d]; 5485 5486 zil_close(zd->zd_zilog); 5487 dmu_objset_disown(zd->zd_os, zd); 5488 5489 ztest_zd_fini(zd); 5490} 5491 5492/* 5493 * Kick off threads to run tests on all datasets in parallel. 5494 */ 5495static void 5496ztest_run(ztest_shared_t *zs) 5497{ 5498 thread_t *tid; 5499 spa_t *spa; 5500 objset_t *os; 5501 thread_t resume_tid; 5502 int error; 5503 5504 ztest_exiting = B_FALSE; 5505 5506 /* 5507 * Initialize parent/child shared state. 5508 */ 5509 VERIFY(_mutex_init(&ztest_vdev_lock, USYNC_THREAD, NULL) == 0); 5510 VERIFY(rwlock_init(&ztest_name_lock, USYNC_THREAD, NULL) == 0); 5511 5512 zs->zs_thread_start = gethrtime(); 5513 zs->zs_thread_stop = 5514 zs->zs_thread_start + ztest_opts.zo_passtime * NANOSEC; 5515 zs->zs_thread_stop = MIN(zs->zs_thread_stop, zs->zs_proc_stop); 5516 zs->zs_thread_kill = zs->zs_thread_stop; 5517 if (ztest_random(100) < ztest_opts.zo_killrate) { 5518 zs->zs_thread_kill -= 5519 ztest_random(ztest_opts.zo_passtime * NANOSEC); 5520 } 5521 5522 (void) _mutex_init(&zcl.zcl_callbacks_lock, USYNC_THREAD, NULL); 5523 5524 list_create(&zcl.zcl_callbacks, sizeof (ztest_cb_data_t), 5525 offsetof(ztest_cb_data_t, zcd_node)); 5526 5527 /* 5528 * Open our pool. 5529 */ 5530 kernel_init(FREAD | FWRITE); 5531 VERIFY0(spa_open(ztest_opts.zo_pool, &spa, FTAG)); 5532 spa->spa_debug = B_TRUE; 5533 ztest_spa = spa; 5534 5535 VERIFY0(dmu_objset_own(ztest_opts.zo_pool, 5536 DMU_OST_ANY, B_TRUE, FTAG, &os)); 5537 zs->zs_guid = dmu_objset_fsid_guid(os); 5538 dmu_objset_disown(os, FTAG); 5539 5540 spa->spa_dedup_ditto = 2 * ZIO_DEDUPDITTO_MIN; 5541 5542 /* 5543 * We don't expect the pool to suspend unless maxfaults == 0, 5544 * in which case ztest_fault_inject() temporarily takes away 5545 * the only valid replica. 5546 */ 5547 if (MAXFAULTS() == 0) 5548 spa->spa_failmode = ZIO_FAILURE_MODE_WAIT; 5549 else 5550 spa->spa_failmode = ZIO_FAILURE_MODE_PANIC; 5551 5552 /* 5553 * Create a thread to periodically resume suspended I/O. 5554 */ 5555 VERIFY(thr_create(0, 0, ztest_resume_thread, spa, THR_BOUND, 5556 &resume_tid) == 0); 5557 5558 /* 5559 * Create a deadman thread to abort() if we hang. 5560 */ 5561 VERIFY(thr_create(0, 0, ztest_deadman_thread, zs, THR_BOUND, 5562 NULL) == 0); 5563 5564 /* 5565 * Verify that we can safely inquire about about any object, 5566 * whether it's allocated or not. To make it interesting, 5567 * we probe a 5-wide window around each power of two. 5568 * This hits all edge cases, including zero and the max. 5569 */ 5570 for (int t = 0; t < 64; t++) { 5571 for (int d = -5; d <= 5; d++) { 5572 error = dmu_object_info(spa->spa_meta_objset, 5573 (1ULL << t) + d, NULL); 5574 ASSERT(error == 0 || error == ENOENT || 5575 error == EINVAL); 5576 } 5577 } 5578 5579 /* 5580 * If we got any ENOSPC errors on the previous run, destroy something. 5581 */ 5582 if (zs->zs_enospc_count != 0) { 5583 int d = ztest_random(ztest_opts.zo_datasets); 5584 ztest_dataset_destroy(d); 5585 } 5586 zs->zs_enospc_count = 0; 5587 5588 tid = umem_zalloc(ztest_opts.zo_threads * sizeof (thread_t), 5589 UMEM_NOFAIL); 5590 5591 if (ztest_opts.zo_verbose >= 4) 5592 (void) printf("starting main threads...\n"); 5593 5594 /* 5595 * Kick off all the tests that run in parallel. 5596 */ 5597 for (int t = 0; t < ztest_opts.zo_threads; t++) { 5598 if (t < ztest_opts.zo_datasets && 5599 ztest_dataset_open(t) != 0) 5600 return; 5601 VERIFY(thr_create(0, 0, ztest_thread, (void *)(uintptr_t)t, 5602 THR_BOUND, &tid[t]) == 0); 5603 } 5604 5605 /* 5606 * Wait for all of the tests to complete. We go in reverse order 5607 * so we don't close datasets while threads are still using them. 5608 */ 5609 for (int t = ztest_opts.zo_threads - 1; t >= 0; t--) { 5610 VERIFY(thr_join(tid[t], NULL, NULL) == 0); 5611 if (t < ztest_opts.zo_datasets) 5612 ztest_dataset_close(t); 5613 } 5614 5615 txg_wait_synced(spa_get_dsl(spa), 0); 5616 5617 zs->zs_alloc = metaslab_class_get_alloc(spa_normal_class(spa)); 5618 zs->zs_space = metaslab_class_get_space(spa_normal_class(spa)); 5619 5620 umem_free(tid, ztest_opts.zo_threads * sizeof (thread_t)); 5621 5622 /* Kill the resume thread */ 5623 ztest_exiting = B_TRUE; 5624 VERIFY(thr_join(resume_tid, NULL, NULL) == 0); 5625 ztest_resume(spa); 5626 5627 /* 5628 * Right before closing the pool, kick off a bunch of async I/O; 5629 * spa_close() should wait for it to complete. 5630 */ 5631 for (uint64_t object = 1; object < 50; object++) 5632 dmu_prefetch(spa->spa_meta_objset, object, 0, 1ULL << 20); 5633 5634 spa_close(spa, FTAG); 5635 5636 /* 5637 * Verify that we can loop over all pools. 5638 */ 5639 mutex_enter(&spa_namespace_lock); 5640 for (spa = spa_next(NULL); spa != NULL; spa = spa_next(spa)) 5641 if (ztest_opts.zo_verbose > 3) 5642 (void) printf("spa_next: found %s\n", spa_name(spa)); 5643 mutex_exit(&spa_namespace_lock); 5644 5645 /* 5646 * Verify that we can export the pool and reimport it under a 5647 * different name. 5648 */ 5649 if (ztest_random(2) == 0) { 5650 char name[MAXNAMELEN]; 5651 (void) snprintf(name, MAXNAMELEN, "%s_import", 5652 ztest_opts.zo_pool); 5653 ztest_spa_import_export(ztest_opts.zo_pool, name); 5654 ztest_spa_import_export(name, ztest_opts.zo_pool); 5655 } 5656 5657 kernel_fini(); 5658 5659 list_destroy(&zcl.zcl_callbacks); 5660 5661 (void) _mutex_destroy(&zcl.zcl_callbacks_lock); 5662 5663 (void) rwlock_destroy(&ztest_name_lock); 5664 (void) _mutex_destroy(&ztest_vdev_lock); 5665} 5666 5667static void 5668ztest_freeze(void) 5669{ 5670 ztest_ds_t *zd = &ztest_ds[0]; 5671 spa_t *spa; 5672 int numloops = 0; 5673 5674 if (ztest_opts.zo_verbose >= 3) 5675 (void) printf("testing spa_freeze()...\n"); 5676 5677 kernel_init(FREAD | FWRITE); 5678 VERIFY3U(0, ==, spa_open(ztest_opts.zo_pool, &spa, FTAG)); 5679 VERIFY3U(0, ==, ztest_dataset_open(0)); 5680 spa->spa_debug = B_TRUE; 5681 ztest_spa = spa; 5682 5683 /* 5684 * Force the first log block to be transactionally allocated. 5685 * We have to do this before we freeze the pool -- otherwise 5686 * the log chain won't be anchored. 5687 */ 5688 while (BP_IS_HOLE(&zd->zd_zilog->zl_header->zh_log)) { 5689 ztest_dmu_object_alloc_free(zd, 0); 5690 zil_commit(zd->zd_zilog, 0); 5691 } 5692 5693 txg_wait_synced(spa_get_dsl(spa), 0); 5694 5695 /* 5696 * Freeze the pool. This stops spa_sync() from doing anything, 5697 * so that the only way to record changes from now on is the ZIL. 5698 */ 5699 spa_freeze(spa); 5700 5701 /* 5702 * Run tests that generate log records but don't alter the pool config 5703 * or depend on DSL sync tasks (snapshots, objset create/destroy, etc). 5704 * We do a txg_wait_synced() after each iteration to force the txg 5705 * to increase well beyond the last synced value in the uberblock. 5706 * The ZIL should be OK with that. 5707 */ 5708 while (ztest_random(10) != 0 && 5709 numloops++ < ztest_opts.zo_maxloops) { 5710 ztest_dmu_write_parallel(zd, 0); 5711 ztest_dmu_object_alloc_free(zd, 0); 5712 txg_wait_synced(spa_get_dsl(spa), 0); 5713 } 5714 5715 /* 5716 * Commit all of the changes we just generated. 5717 */ 5718 zil_commit(zd->zd_zilog, 0); 5719 txg_wait_synced(spa_get_dsl(spa), 0); 5720 5721 /* 5722 * Close our dataset and close the pool. 5723 */ 5724 ztest_dataset_close(0); 5725 spa_close(spa, FTAG); 5726 kernel_fini(); 5727 5728 /* 5729 * Open and close the pool and dataset to induce log replay. 5730 */ 5731 kernel_init(FREAD | FWRITE); 5732 VERIFY3U(0, ==, spa_open(ztest_opts.zo_pool, &spa, FTAG)); 5733 ASSERT(spa_freeze_txg(spa) == UINT64_MAX); 5734 VERIFY3U(0, ==, ztest_dataset_open(0)); 5735 ztest_dataset_close(0); 5736 5737 spa->spa_debug = B_TRUE; 5738 ztest_spa = spa; 5739 txg_wait_synced(spa_get_dsl(spa), 0); 5740 ztest_reguid(NULL, 0); 5741 5742 spa_close(spa, FTAG); 5743 kernel_fini(); 5744} 5745 5746void 5747print_time(hrtime_t t, char *timebuf) 5748{ 5749 hrtime_t s = t / NANOSEC; 5750 hrtime_t m = s / 60; 5751 hrtime_t h = m / 60; 5752 hrtime_t d = h / 24; 5753 5754 s -= m * 60; 5755 m -= h * 60; 5756 h -= d * 24; 5757 5758 timebuf[0] = '\0'; 5759 5760 if (d) 5761 (void) sprintf(timebuf, 5762 "%llud%02lluh%02llum%02llus", d, h, m, s); 5763 else if (h) 5764 (void) sprintf(timebuf, "%lluh%02llum%02llus", h, m, s); 5765 else if (m) 5766 (void) sprintf(timebuf, "%llum%02llus", m, s); 5767 else 5768 (void) sprintf(timebuf, "%llus", s); 5769} 5770 5771static nvlist_t * 5772make_random_props() 5773{ 5774 nvlist_t *props; 5775 5776 VERIFY(nvlist_alloc(&props, NV_UNIQUE_NAME, 0) == 0); 5777 if (ztest_random(2) == 0) 5778 return (props); 5779 VERIFY(nvlist_add_uint64(props, "autoreplace", 1) == 0); 5780 5781 return (props); 5782} 5783 5784/* 5785 * Create a storage pool with the given name and initial vdev size. 5786 * Then test spa_freeze() functionality. 5787 */ 5788static void 5789ztest_init(ztest_shared_t *zs) 5790{ 5791 spa_t *spa; 5792 nvlist_t *nvroot, *props; 5793 5794 VERIFY(_mutex_init(&ztest_vdev_lock, USYNC_THREAD, NULL) == 0); 5795 VERIFY(rwlock_init(&ztest_name_lock, USYNC_THREAD, NULL) == 0); 5796 5797 kernel_init(FREAD | FWRITE); 5798 5799 /* 5800 * Create the storage pool. 5801 */ 5802 (void) spa_destroy(ztest_opts.zo_pool); 5803 ztest_shared->zs_vdev_next_leaf = 0; 5804 zs->zs_splits = 0; 5805 zs->zs_mirrors = ztest_opts.zo_mirrors; 5806 nvroot = make_vdev_root(NULL, NULL, NULL, ztest_opts.zo_vdev_size, 0, 5807 0, ztest_opts.zo_raidz, zs->zs_mirrors, 1); 5808 props = make_random_props(); 5809 for (int i = 0; i < SPA_FEATURES; i++) { 5810 char buf[1024]; 5811 (void) snprintf(buf, sizeof (buf), "feature@%s", 5812 spa_feature_table[i].fi_uname); 5813 VERIFY3U(0, ==, nvlist_add_uint64(props, buf, 0)); 5814 } 5815 VERIFY3U(0, ==, spa_create(ztest_opts.zo_pool, nvroot, props, NULL)); 5816 nvlist_free(nvroot); 5817 5818 VERIFY3U(0, ==, spa_open(ztest_opts.zo_pool, &spa, FTAG)); 5819 zs->zs_metaslab_sz = 5820 1ULL << spa->spa_root_vdev->vdev_child[0]->vdev_ms_shift; 5821 5822 spa_close(spa, FTAG); 5823 5824 kernel_fini(); 5825 5826 ztest_run_zdb(ztest_opts.zo_pool); 5827 5828 ztest_freeze(); 5829 5830 ztest_run_zdb(ztest_opts.zo_pool); 5831 5832 (void) rwlock_destroy(&ztest_name_lock); 5833 (void) _mutex_destroy(&ztest_vdev_lock); 5834} 5835 5836static void 5837setup_data_fd(void) 5838{ 5839 static char ztest_name_data[] = "/tmp/ztest.data.XXXXXX"; 5840 5841 ztest_fd_data = mkstemp(ztest_name_data); 5842 ASSERT3S(ztest_fd_data, >=, 0); 5843 (void) unlink(ztest_name_data); 5844} 5845 5846 5847static int 5848shared_data_size(ztest_shared_hdr_t *hdr) 5849{ 5850 int size; 5851 5852 size = hdr->zh_hdr_size; 5853 size += hdr->zh_opts_size; 5854 size += hdr->zh_size; 5855 size += hdr->zh_stats_size * hdr->zh_stats_count; 5856 size += hdr->zh_ds_size * hdr->zh_ds_count; 5857 5858 return (size); 5859} 5860 5861static void 5862setup_hdr(void) 5863{ 5864 int size; 5865 ztest_shared_hdr_t *hdr; 5866 5867 hdr = (void *)mmap(0, P2ROUNDUP(sizeof (*hdr), getpagesize()), 5868 PROT_READ | PROT_WRITE, MAP_SHARED, ztest_fd_data, 0); 5869 ASSERT(hdr != MAP_FAILED); 5870 5871 VERIFY3U(0, ==, ftruncate(ztest_fd_data, sizeof (ztest_shared_hdr_t))); 5872 5873 hdr->zh_hdr_size = sizeof (ztest_shared_hdr_t); 5874 hdr->zh_opts_size = sizeof (ztest_shared_opts_t); 5875 hdr->zh_size = sizeof (ztest_shared_t); 5876 hdr->zh_stats_size = sizeof (ztest_shared_callstate_t); 5877 hdr->zh_stats_count = ZTEST_FUNCS; 5878 hdr->zh_ds_size = sizeof (ztest_shared_ds_t); 5879 hdr->zh_ds_count = ztest_opts.zo_datasets; 5880 5881 size = shared_data_size(hdr); 5882 VERIFY3U(0, ==, ftruncate(ztest_fd_data, size)); 5883 5884 (void) munmap((caddr_t)hdr, P2ROUNDUP(sizeof (*hdr), getpagesize())); 5885} 5886 5887static void 5888setup_data(void) 5889{ 5890 int size, offset; 5891 ztest_shared_hdr_t *hdr; 5892 uint8_t *buf; 5893 5894 hdr = (void *)mmap(0, P2ROUNDUP(sizeof (*hdr), getpagesize()), 5895 PROT_READ, MAP_SHARED, ztest_fd_data, 0); 5896 ASSERT(hdr != MAP_FAILED); 5897 5898 size = shared_data_size(hdr); 5899 5900 (void) munmap((caddr_t)hdr, P2ROUNDUP(sizeof (*hdr), getpagesize())); 5901 hdr = ztest_shared_hdr = (void *)mmap(0, P2ROUNDUP(size, getpagesize()), 5902 PROT_READ | PROT_WRITE, MAP_SHARED, ztest_fd_data, 0); 5903 ASSERT(hdr != MAP_FAILED); 5904 buf = (uint8_t *)hdr; 5905 5906 offset = hdr->zh_hdr_size; 5907 ztest_shared_opts = (void *)&buf[offset]; 5908 offset += hdr->zh_opts_size; 5909 ztest_shared = (void *)&buf[offset]; 5910 offset += hdr->zh_size; 5911 ztest_shared_callstate = (void *)&buf[offset]; 5912 offset += hdr->zh_stats_size * hdr->zh_stats_count; 5913 ztest_shared_ds = (void *)&buf[offset]; 5914} 5915 5916static boolean_t 5917exec_child(char *cmd, char *libpath, boolean_t ignorekill, int *statusp) 5918{ 5919 pid_t pid; 5920 int status; 5921 char *cmdbuf = NULL; 5922 5923 pid = fork(); 5924 5925 if (cmd == NULL) { 5926 cmdbuf = umem_alloc(MAXPATHLEN, UMEM_NOFAIL); 5927 (void) strlcpy(cmdbuf, getexecname(), MAXPATHLEN); 5928 cmd = cmdbuf; 5929 } 5930 5931 if (pid == -1) 5932 fatal(1, "fork failed"); 5933 5934 if (pid == 0) { /* child */ 5935 char *emptyargv[2] = { cmd, NULL }; 5936 char fd_data_str[12]; 5937 5938 struct rlimit rl = { 1024, 1024 }; 5939 (void) setrlimit(RLIMIT_NOFILE, &rl); 5940 5941 (void) close(ztest_fd_rand); 5942 VERIFY3U(11, >=, 5943 snprintf(fd_data_str, 12, "%d", ztest_fd_data)); 5944 VERIFY0(setenv("ZTEST_FD_DATA", fd_data_str, 1)); 5945 5946 (void) enable_extended_FILE_stdio(-1, -1); 5947 if (libpath != NULL) 5948 VERIFY(0 == setenv("LD_LIBRARY_PATH", libpath, 1)); 5949#ifdef illumos 5950 (void) execv(cmd, emptyargv); 5951#else 5952 (void) execvp(cmd, emptyargv); 5953#endif 5954 ztest_dump_core = B_FALSE; 5955 fatal(B_TRUE, "exec failed: %s", cmd); 5956 } 5957 5958 if (cmdbuf != NULL) { 5959 umem_free(cmdbuf, MAXPATHLEN); 5960 cmd = NULL; 5961 } 5962 5963 while (waitpid(pid, &status, 0) != pid) 5964 continue; 5965 if (statusp != NULL) 5966 *statusp = status; 5967 5968 if (WIFEXITED(status)) { 5969 if (WEXITSTATUS(status) != 0) { 5970 (void) fprintf(stderr, "child exited with code %d\n", 5971 WEXITSTATUS(status)); 5972 exit(2); 5973 } 5974 return (B_FALSE); 5975 } else if (WIFSIGNALED(status)) { 5976 if (!ignorekill || WTERMSIG(status) != SIGKILL) { 5977 (void) fprintf(stderr, "child died with signal %d\n", 5978 WTERMSIG(status)); 5979 exit(3); 5980 } 5981 return (B_TRUE); 5982 } else { 5983 (void) fprintf(stderr, "something strange happened to child\n"); 5984 exit(4); 5985 /* NOTREACHED */ 5986 } 5987} 5988 5989static void 5990ztest_run_init(void) 5991{ 5992 ztest_shared_t *zs = ztest_shared; 5993 5994 ASSERT(ztest_opts.zo_init != 0); 5995 5996 /* 5997 * Blow away any existing copy of zpool.cache 5998 */ 5999 (void) remove(spa_config_path); 6000 6001 /* 6002 * Create and initialize our storage pool. 6003 */ 6004 for (int i = 1; i <= ztest_opts.zo_init; i++) { 6005 bzero(zs, sizeof (ztest_shared_t)); 6006 if (ztest_opts.zo_verbose >= 3 && 6007 ztest_opts.zo_init != 1) { 6008 (void) printf("ztest_init(), pass %d\n", i); 6009 } 6010 ztest_init(zs); 6011 } 6012} 6013 6014int 6015main(int argc, char **argv) 6016{ 6017 int kills = 0; 6018 int iters = 0; 6019 int older = 0; 6020 int newer = 0; 6021 ztest_shared_t *zs; 6022 ztest_info_t *zi; 6023 ztest_shared_callstate_t *zc; 6024 char timebuf[100]; 6025 char numbuf[6]; 6026 spa_t *spa; 6027 char *cmd; 6028 boolean_t hasalt; 6029 char *fd_data_str = getenv("ZTEST_FD_DATA"); 6030 6031 (void) setvbuf(stdout, NULL, _IOLBF, 0); 6032 6033 dprintf_setup(&argc, argv); 6034 6035 ztest_fd_rand = open("/dev/urandom", O_RDONLY); 6036 ASSERT3S(ztest_fd_rand, >=, 0); 6037 6038 if (!fd_data_str) { 6039 process_options(argc, argv); 6040 6041 setup_data_fd(); 6042 setup_hdr(); 6043 setup_data(); 6044 bcopy(&ztest_opts, ztest_shared_opts, 6045 sizeof (*ztest_shared_opts)); 6046 } else { 6047 ztest_fd_data = atoi(fd_data_str); 6048 setup_data(); 6049 bcopy(ztest_shared_opts, &ztest_opts, sizeof (ztest_opts)); 6050 } 6051 ASSERT3U(ztest_opts.zo_datasets, ==, ztest_shared_hdr->zh_ds_count); 6052 6053 /* Override location of zpool.cache */ 6054 VERIFY3U(asprintf((char **)&spa_config_path, "%s/zpool.cache", 6055 ztest_opts.zo_dir), !=, -1); 6056 6057 ztest_ds = umem_alloc(ztest_opts.zo_datasets * sizeof (ztest_ds_t), 6058 UMEM_NOFAIL); 6059 zs = ztest_shared; 6060 6061 if (fd_data_str) { 6062 metaslab_gang_bang = ztest_opts.zo_metaslab_gang_bang; 6063 metaslab_df_alloc_threshold = 6064 zs->zs_metaslab_df_alloc_threshold; 6065 6066 if (zs->zs_do_init) 6067 ztest_run_init(); 6068 else 6069 ztest_run(zs); 6070 exit(0); 6071 } 6072 6073 hasalt = (strlen(ztest_opts.zo_alt_ztest) != 0); 6074 6075 if (ztest_opts.zo_verbose >= 1) { 6076 (void) printf("%llu vdevs, %d datasets, %d threads," 6077 " %llu seconds...\n", 6078 (u_longlong_t)ztest_opts.zo_vdevs, 6079 ztest_opts.zo_datasets, 6080 ztest_opts.zo_threads, 6081 (u_longlong_t)ztest_opts.zo_time); 6082 } 6083 6084 cmd = umem_alloc(MAXNAMELEN, UMEM_NOFAIL); 6085 (void) strlcpy(cmd, getexecname(), MAXNAMELEN); 6086 6087 zs->zs_do_init = B_TRUE; 6088 if (strlen(ztest_opts.zo_alt_ztest) != 0) { 6089 if (ztest_opts.zo_verbose >= 1) { 6090 (void) printf("Executing older ztest for " 6091 "initialization: %s\n", ztest_opts.zo_alt_ztest); 6092 } 6093 VERIFY(!exec_child(ztest_opts.zo_alt_ztest, 6094 ztest_opts.zo_alt_libpath, B_FALSE, NULL)); 6095 } else { 6096 VERIFY(!exec_child(NULL, NULL, B_FALSE, NULL)); 6097 } 6098 zs->zs_do_init = B_FALSE; 6099 6100 zs->zs_proc_start = gethrtime(); 6101 zs->zs_proc_stop = zs->zs_proc_start + ztest_opts.zo_time * NANOSEC; 6102 6103 for (int f = 0; f < ZTEST_FUNCS; f++) { 6104 zi = &ztest_info[f]; 6105 zc = ZTEST_GET_SHARED_CALLSTATE(f); 6106 if (zs->zs_proc_start + zi->zi_interval[0] > zs->zs_proc_stop) 6107 zc->zc_next = UINT64_MAX; 6108 else 6109 zc->zc_next = zs->zs_proc_start + 6110 ztest_random(2 * zi->zi_interval[0] + 1); 6111 } 6112 6113 /* 6114 * Run the tests in a loop. These tests include fault injection 6115 * to verify that self-healing data works, and forced crashes 6116 * to verify that we never lose on-disk consistency. 6117 */ 6118 while (gethrtime() < zs->zs_proc_stop) { 6119 int status; 6120 boolean_t killed; 6121 6122 /* 6123 * Initialize the workload counters for each function. 6124 */ 6125 for (int f = 0; f < ZTEST_FUNCS; f++) { 6126 zc = ZTEST_GET_SHARED_CALLSTATE(f); 6127 zc->zc_count = 0; 6128 zc->zc_time = 0; 6129 } 6130 6131 /* Set the allocation switch size */ 6132 zs->zs_metaslab_df_alloc_threshold = 6133 ztest_random(zs->zs_metaslab_sz / 4) + 1; 6134 6135 if (!hasalt || ztest_random(2) == 0) { 6136 if (hasalt && ztest_opts.zo_verbose >= 1) { 6137 (void) printf("Executing newer ztest: %s\n", 6138 cmd); 6139 } 6140 newer++; 6141 killed = exec_child(cmd, NULL, B_TRUE, &status); 6142 } else { 6143 if (hasalt && ztest_opts.zo_verbose >= 1) { 6144 (void) printf("Executing older ztest: %s\n", 6145 ztest_opts.zo_alt_ztest); 6146 } 6147 older++; 6148 killed = exec_child(ztest_opts.zo_alt_ztest, 6149 ztest_opts.zo_alt_libpath, B_TRUE, &status); 6150 } 6151 6152 if (killed) 6153 kills++; 6154 iters++; 6155 6156 if (ztest_opts.zo_verbose >= 1) { 6157 hrtime_t now = gethrtime(); 6158 6159 now = MIN(now, zs->zs_proc_stop); 6160 print_time(zs->zs_proc_stop - now, timebuf); 6161 nicenum(zs->zs_space, numbuf); 6162 6163 (void) printf("Pass %3d, %8s, %3llu ENOSPC, " 6164 "%4.1f%% of %5s used, %3.0f%% done, %8s to go\n", 6165 iters, 6166 WIFEXITED(status) ? "Complete" : "SIGKILL", 6167 (u_longlong_t)zs->zs_enospc_count, 6168 100.0 * zs->zs_alloc / zs->zs_space, 6169 numbuf, 6170 100.0 * (now - zs->zs_proc_start) / 6171 (ztest_opts.zo_time * NANOSEC), timebuf); 6172 } 6173 6174 if (ztest_opts.zo_verbose >= 2) { 6175 (void) printf("\nWorkload summary:\n\n"); 6176 (void) printf("%7s %9s %s\n", 6177 "Calls", "Time", "Function"); 6178 (void) printf("%7s %9s %s\n", 6179 "-----", "----", "--------"); 6180 for (int f = 0; f < ZTEST_FUNCS; f++) { 6181 Dl_info dli; 6182 6183 zi = &ztest_info[f]; 6184 zc = ZTEST_GET_SHARED_CALLSTATE(f); 6185 print_time(zc->zc_time, timebuf); 6186 (void) dladdr((void *)zi->zi_func, &dli); 6187 (void) printf("%7llu %9s %s\n", 6188 (u_longlong_t)zc->zc_count, timebuf, 6189 dli.dli_sname); 6190 } 6191 (void) printf("\n"); 6192 } 6193 6194 /* 6195 * It's possible that we killed a child during a rename test, 6196 * in which case we'll have a 'ztest_tmp' pool lying around 6197 * instead of 'ztest'. Do a blind rename in case this happened. 6198 */ 6199 kernel_init(FREAD); 6200 if (spa_open(ztest_opts.zo_pool, &spa, FTAG) == 0) { 6201 spa_close(spa, FTAG); 6202 } else { 6203 char tmpname[MAXNAMELEN]; 6204 kernel_fini(); 6205 kernel_init(FREAD | FWRITE); 6206 (void) snprintf(tmpname, sizeof (tmpname), "%s_tmp", 6207 ztest_opts.zo_pool); 6208 (void) spa_rename(tmpname, ztest_opts.zo_pool); 6209 } 6210 kernel_fini(); 6211 6212 ztest_run_zdb(ztest_opts.zo_pool); 6213 } 6214 6215 if (ztest_opts.zo_verbose >= 1) { 6216 if (hasalt) { 6217 (void) printf("%d runs of older ztest: %s\n", older, 6218 ztest_opts.zo_alt_ztest); 6219 (void) printf("%d runs of newer ztest: %s\n", newer, 6220 cmd); 6221 } 6222 (void) printf("%d killed, %d completed, %.0f%% kill rate\n", 6223 kills, iters - kills, (100.0 * kills) / MAX(1, iters)); 6224 } 6225 6226 umem_free(cmd, MAXNAMELEN); 6227 6228 return (0); 6229} 6230