init.c

   1 /*
   2  * This file contains job initialization and setup functions.
   3  */
   4 #include <stdio.h>
   5 #include <stdlib.h>
   6 #include <unistd.h>
   7 #include <fcntl.h>
   8 #include <ctype.h>
   9 #include <string.h>
  10 #include <errno.h>
  11 #include <sys/ipc.h>
  12 #include <sys/shm.h>
  13 #include <sys/types.h>
  14 #include <sys/stat.h>
  15
  16 #include "fio.h"
  17 #include "parse.h"
  18 #include "smalloc.h"
  19 #include "filehash.h"
  20 #include "verify.h"
  21 #include "profile.h"
  22 #include "server.h"
  23
  24 #include "lib/getopt.h"
  25
  26 #if FIO_PATCH > 0
  27 static char fio_version_string[] =      __fio_stringify(FIO_MAJOR) "."  \
  28                                         __fio_stringify(FIO_MINOR) "."  \
  29                                         __fio_stringify(FIO_PATCH);
  30 #else
  31 static char fio_version_string[] =      __fio_stringify(FIO_MAJOR) "."  \
  32                                         __fio_stringify(FIO_MINOR);
  33 #endif
  34
  35 #define FIO_RANDSEED            (0xb1899bedUL)
  36
  37 static char **ini_file;
  38 static int max_jobs = FIO_MAX_JOBS;
  39 static int dump_cmdline;
  40 static int def_timeout;
  41
  42 static struct thread_data def_thread;
  43 struct thread_data *threads = NULL;
  44
  45 int exitall_on_terminate = 0;
  46 int terse_output = 0;
  47 int eta_print;
  48 unsigned long long mlock_size = 0;
  49 FILE *f_out = NULL;
  50 FILE *f_err = NULL;
  51 char **job_sections = NULL;
  52 int nr_job_sections = 0;
  53 char *exec_profile = NULL;
  54 int warnings_fatal = 0;
  55 int terse_version = 2;
  56 int is_backend = 0;
  57 int nr_clients = 0;
  58 int log_syslog = 0;
  59
  60 int write_bw_log = 0;
  61 int read_only = 0;
  62
  63 static int write_lat_log;
  64
  65 static int prev_group_jobs;
  66
  67 unsigned long fio_debug = 0;
  68 unsigned int fio_debug_jobno = -1;
  69 unsigned int *fio_debug_jobp = NULL;
  70
  71 static char cmd_optstr[256];
  72
  73 const fio_fp64_t def_percentile_list[FIO_IO_U_LIST_MAX_LEN] = {
  74         { .u.f  =  1.0 },
  75         { .u.f  =  5.0 },
  76         { .u.f  = 10.0 },
  77         { .u.f  = 20.0 },
  78         { .u.f  = 30.0 },
  79         { .u.f  = 40.0 },
  80         { .u.f  = 50.0 },
  81         { .u.f  = 60.0 },
  82         { .u.f  = 70.0 },
  83         { .u.f  = 80.0 },
  84         { .u.f  = 90.0 },
  85         { .u.f  = 95.0 },
  86         { .u.f  = 99.0 },
  87         { .u.f  = 99.5 },
  88         { .u.f  = 99.9 },
  89 };
  90
  91 /*
  92  * Command line options. These will contain the above, plus a few
  93  * extra that only pertain to fio itself and not jobs.
  94  */
  95 static struct option l_opts[FIO_NR_OPTIONS] = {
  96         {
  97                 .name           = (char *) "output",
  98                 .has_arg        = required_argument,
  99                 .val            = 'o',
 100         },
 101         {
 102                 .name           = (char *) "timeout",
 103                 .has_arg        = required_argument,
 104                 .val            = 't',
 105         },
 106         {
 107                 .name           = (char *) "latency-log",
 108                 .has_arg        = required_argument,
 109                 .val            = 'l',
 110         },
 111         {
 112                 .name           = (char *) "bandwidth-log",
 113                 .has_arg        = required_argument,
 114                 .val            = 'b',
 115         },
 116         {
 117                 .name           = (char *) "minimal",
 118                 .has_arg        = optional_argument,
 119                 .val            = 'm',
 120         },
 121         {
 122                 .name           = (char *) "version",
 123                 .has_arg        = no_argument,
 124                 .val            = 'v',
 125         },
 126         {
 127                 .name           = (char *) "help",
 128                 .has_arg        = no_argument,
 129                 .val            = 'h',
 130         },
 131         {
 132                 .name           = (char *) "cmdhelp",
 133                 .has_arg        = optional_argument,
 134                 .val            = 'c',
 135         },
 136         {
 137                 .name           = (char *) "showcmd",
 138                 .has_arg        = no_argument,
 139                 .val            = 's',
 140         },
 141         {
 142                 .name           = (char *) "readonly",
 143                 .has_arg        = no_argument,
 144                 .val            = 'r',
 145         },
 146         {
 147                 .name           = (char *) "eta",
 148                 .has_arg        = required_argument,
 149                 .val            = 'e',
 150         },
 151         {
 152                 .name           = (char *) "debug",
 153                 .has_arg        = required_argument,
 154                 .val            = 'd',
 155         },
 156         {
 157                 .name           = (char *) "section",
 158                 .has_arg        = required_argument,
 159                 .val            = 'x',
 160         },
 161         {
 162                 .name           = (char *) "alloc-size",
 163                 .has_arg        = required_argument,
 164                 .val            = 'a',
 165         },
 166         {
 167                 .name           = (char *) "profile",
 168                 .has_arg        = required_argument,
 169                 .val            = 'p',
 170         },
 171         {
 172                 .name           = (char *) "warnings-fatal",
 173                 .has_arg        = no_argument,
 174                 .val            = 'w',
 175         },
 176         {
 177                 .name           = (char *) "max-jobs",
 178                 .has_arg        = required_argument,
 179                 .val            = 'j',
 180         },
 181         {
 182                 .name           = (char *) "terse-version",
 183                 .has_arg        = required_argument,
 184                 .val            = 'V',
 185         },
 186         {
 187                 .name           = (char *) "server",
 188                 .has_arg        = no_argument,
 189                 .val            = 'S',
 190         },
 191         {       .name           = (char *) "daemonize",
 192                 .has_arg        = no_argument,
 193                 .val            = 'D',
 194         },
 195         {
 196                 .name           = (char *) "net-port",
 197                 .has_arg        = required_argument,
 198                 .val            = 'P',
 199         },
 200         {
 201                 .name           = (char *) "client",
 202                 .has_arg        = required_argument,
 203                 .val            = 'C',
 204         },
 205         {
 206                 .name           = NULL,
 207         },
 208 };
 209
 210 static void free_shm(void)
 211 {
 212         struct shmid_ds sbuf;
 213
 214         if (threads) {
 215                 void *tp = threads;
 216
 217                 threads = NULL;
 218                 file_hash_exit();
 219                 fio_debug_jobp = NULL;
 220                 shmdt(tp);
 221                 shmctl(shm_id, IPC_RMID, &sbuf);
 222         }
 223
 224         scleanup();
 225 }
 226
 227 /*
 228  * The thread area is shared between the main process and the job
 229  * threads/processes. So setup a shared memory segment that will hold
 230  * all the job info. We use the end of the region for keeping track of
 231  * open files across jobs, for file sharing.
 232  */
 233 static int setup_thread_area(void)
 234 {
 235         void *hash;
 236
 237         if (threads)
 238                 return 0;
 239
 240         /*
 241          * 1024 is too much on some machines, scale max_jobs if
 242          * we get a failure that looks like too large a shm segment
 243          */
 244         do {
 245                 size_t size = max_jobs * sizeof(struct thread_data);
 246
 247                 size += file_hash_size;
 248                 size += sizeof(unsigned int);
 249
 250                 shm_id = shmget(0, size, IPC_CREAT | 0600);
 251                 if (shm_id != -1)
 252                         break;
 253                 if (errno != EINVAL) {
 254                         perror("shmget");
 255                         break;
 256                 }
 257
 258                 max_jobs >>= 1;
 259         } while (max_jobs);
 260
 261         if (shm_id == -1)
 262                 return 1;
 263
 264         threads = shmat(shm_id, NULL, 0);
 265         if (threads == (void *) -1) {
 266                 perror("shmat");
 267                 return 1;
 268         }
 269
 270         memset(threads, 0, max_jobs * sizeof(struct thread_data));
 271         hash = (void *) threads + max_jobs * sizeof(struct thread_data);
 272         fio_debug_jobp = (void *) hash + file_hash_size;
 273         *fio_debug_jobp = -1;
 274         file_hash_init(hash);
 275         return 0;
 276 }
 277
 278 /*
 279  * Return a free job structure.
 280  */
 281 static struct thread_data *get_new_job(int global, struct thread_data *parent)
 282 {
 283         struct thread_data *td;
 284
 285         if (global)
 286                 return &def_thread;
 287         if (setup_thread_area()) {
 288                 log_err("error: failed to setup shm segment\n");
 289                 return NULL;
 290         }
 291         if (thread_number >= max_jobs) {
 292                 log_err("error: maximum number of jobs (%d) reached.\n",
 293                                 max_jobs);
 294                 return NULL;
 295         }
 296
 297         td = &threads[thread_number++];
 298         *td = *parent;
 299
 300         td->o.uid = td->o.gid = -1U;
 301
 302         dup_files(td, parent);
 303         options_mem_dupe(td);
 304
 305         profile_add_hooks(td);
 306
 307         td->thread_number = thread_number;
 308         return td;
 309 }
 310
 311 static void put_job(struct thread_data *td)
 312 {
 313         if (td == &def_thread)
 314                 return;
 315
 316         profile_td_exit(td);
 317
 318         if (td->error)
 319                 log_info("fio: %s\n", td->verror);
 320
 321         memset(&threads[td->thread_number - 1], 0, sizeof(*td));
 322         thread_number--;
 323 }
 324
 325 static int __setup_rate(struct thread_data *td, enum fio_ddir ddir)
 326 {
 327         unsigned int bs = td->o.min_bs[ddir];
 328         unsigned long long bytes_per_sec;
 329
 330         assert(ddir_rw(ddir));
 331
 332         if (td->o.rate[ddir])
 333                 bytes_per_sec = td->o.rate[ddir];
 334         else
 335                 bytes_per_sec = td->o.rate_iops[ddir] * bs;
 336
 337         if (!bytes_per_sec) {
 338                 log_err("rate lower than supported\n");
 339                 return -1;
 340         }
 341
 342         td->rate_nsec_cycle[ddir] = 1000000000ULL / bytes_per_sec;
 343         td->rate_pending_usleep[ddir] = 0;
 344         return 0;
 345 }
 346
 347 static int setup_rate(struct thread_data *td)
 348 {
 349         int ret = 0;
 350
 351         if (td->o.rate[DDIR_READ] || td->o.rate_iops[DDIR_READ])
 352                 ret = __setup_rate(td, DDIR_READ);
 353         if (td->o.rate[DDIR_WRITE] || td->o.rate_iops[DDIR_WRITE])
 354                 ret |= __setup_rate(td, DDIR_WRITE);
 355
 356         return ret;
 357 }
 358
 359 static int fixed_block_size(struct thread_options *o)
 360 {
 361         return o->min_bs[DDIR_READ] == o->max_bs[DDIR_READ] &&
 362                 o->min_bs[DDIR_WRITE] == o->max_bs[DDIR_WRITE] &&
 363                 o->min_bs[DDIR_READ] == o->min_bs[DDIR_WRITE];
 364 }
 365
 366 /*
 367  * Lazy way of fixing up options that depend on each other. We could also
 368  * define option callback handlers, but this is easier.
 369  */
 370 static int fixup_options(struct thread_data *td)
 371 {
 372         struct thread_options *o = &td->o;
 373         int ret = 0;
 374
 375 #ifndef FIO_HAVE_PSHARED_MUTEX
 376         if (!o->use_thread) {
 377                 log_info("fio: this platform does not support process shared"
 378                          " mutexes, forcing use of threads. Use the 'thread'"
 379                          " option to get rid of this warning.\n");
 380                 o->use_thread = 1;
 381                 ret = warnings_fatal;
 382         }
 383 #endif
 384
 385         if (o->write_iolog_file && o->read_iolog_file) {
 386                 log_err("fio: read iolog overrides write_iolog\n");
 387                 free(o->write_iolog_file);
 388                 o->write_iolog_file = NULL;
 389                 ret = warnings_fatal;
 390         }
 391
 392         /*
 393          * only really works for sequential io for now, and with 1 file
 394          */
 395         if (o->zone_size && td_random(td) && o->open_files == 1)
 396                 o->zone_size = 0;
 397
 398         /*
 399          * Reads can do overwrites, we always need to pre-create the file
 400          */
 401         if (td_read(td) || td_rw(td))
 402                 o->overwrite = 1;
 403
 404         if (!o->min_bs[DDIR_READ])
 405                 o->min_bs[DDIR_READ] = o->bs[DDIR_READ];
 406         if (!o->max_bs[DDIR_READ])
 407                 o->max_bs[DDIR_READ] = o->bs[DDIR_READ];
 408         if (!o->min_bs[DDIR_WRITE])
 409                 o->min_bs[DDIR_WRITE] = o->bs[DDIR_WRITE];
 410         if (!o->max_bs[DDIR_WRITE])
 411                 o->max_bs[DDIR_WRITE] = o->bs[DDIR_WRITE];
 412
 413         o->rw_min_bs = min(o->min_bs[DDIR_READ], o->min_bs[DDIR_WRITE]);
 414
 415         /*
 416          * For random IO, allow blockalign offset other than min_bs.
 417          */
 418         if (!o->ba[DDIR_READ] || !td_random(td))
 419                 o->ba[DDIR_READ] = o->min_bs[DDIR_READ];
 420         if (!o->ba[DDIR_WRITE] || !td_random(td))
 421                 o->ba[DDIR_WRITE] = o->min_bs[DDIR_WRITE];
 422
 423         if ((o->ba[DDIR_READ] != o->min_bs[DDIR_READ] ||
 424             o->ba[DDIR_WRITE] != o->min_bs[DDIR_WRITE]) &&
 425             !o->norandommap) {
 426                 log_err("fio: Any use of blockalign= turns off randommap\n");
 427                 o->norandommap = 1;
 428                 ret = warnings_fatal;
 429         }
 430
 431         if (!o->file_size_high)
 432                 o->file_size_high = o->file_size_low;
 433
 434         if (o->norandommap && o->verify != VERIFY_NONE
 435             && !fixed_block_size(o))  {
 436                 log_err("fio: norandommap given for variable block sizes, "
 437                         "verify disabled\n");
 438                 o->verify = VERIFY_NONE;
 439                 ret = warnings_fatal;
 440         }
 441         if (o->bs_unaligned && (o->odirect || td->io_ops->flags & FIO_RAWIO))
 442                 log_err("fio: bs_unaligned may not work with raw io\n");
 443
 444         /*
 445          * thinktime_spin must be less than thinktime
 446          */
 447         if (o->thinktime_spin > o->thinktime)
 448                 o->thinktime_spin = o->thinktime;
 449
 450         /*
 451          * The low water mark cannot be bigger than the iodepth
 452          */
 453         if (o->iodepth_low > o->iodepth || !o->iodepth_low) {
 454                 /*
 455                  * syslet work around - if the workload is sequential,
 456                  * we want to let the queue drain all the way down to
 457                  * avoid seeking between async threads
 458                  */
 459                 if (!strcmp(td->io_ops->name, "syslet-rw") && !td_random(td))
 460                         o->iodepth_low = 1;
 461                 else
 462                         o->iodepth_low = o->iodepth;
 463         }
 464
 465         /*
 466          * If batch number isn't set, default to the same as iodepth
 467          */
 468         if (o->iodepth_batch > o->iodepth || !o->iodepth_batch)
 469                 o->iodepth_batch = o->iodepth;
 470
 471         if (o->nr_files > td->files_index)
 472                 o->nr_files = td->files_index;
 473
 474         if (o->open_files > o->nr_files || !o->open_files)
 475                 o->open_files = o->nr_files;
 476
 477         if (((o->rate[0] + o->rate[1]) && (o->rate_iops[0] + o->rate_iops[1]))||
 478             ((o->ratemin[0] + o->ratemin[1]) && (o->rate_iops_min[0] +
 479                 o->rate_iops_min[1]))) {
 480                 log_err("fio: rate and rate_iops are mutually exclusive\n");
 481                 ret = 1;
 482         }
 483         if ((o->rate[0] < o->ratemin[0]) || (o->rate[1] < o->ratemin[1]) ||
 484             (o->rate_iops[0] < o->rate_iops_min[0]) ||
 485             (o->rate_iops[1] < o->rate_iops_min[1])) {
 486                 log_err("fio: minimum rate exceeds rate\n");
 487                 ret = 1;
 488         }
 489
 490         if (!o->timeout && o->time_based) {
 491                 log_err("fio: time_based requires a runtime/timeout setting\n");
 492                 o->time_based = 0;
 493                 ret = warnings_fatal;
 494         }
 495
 496         if (o->fill_device && !o->size)
 497                 o->size = -1ULL;
 498
 499         if (o->verify != VERIFY_NONE) {
 500                 if (td_write(td) && o->do_verify && o->numjobs > 1) {
 501                         log_info("Multiple writers may overwrite blocks that "
 502                                 "belong to other jobs. This can cause "
 503                                 "verification failures.\n");
 504                         ret = warnings_fatal;
 505                 }
 506
 507                 o->refill_buffers = 1;
 508                 if (o->max_bs[DDIR_WRITE] != o->min_bs[DDIR_WRITE] &&
 509                     !o->verify_interval)
 510                         o->verify_interval = o->min_bs[DDIR_WRITE];
 511         }
 512
 513         if (o->pre_read) {
 514                 o->invalidate_cache = 0;
 515                 if (td->io_ops->flags & FIO_PIPEIO) {
 516                         log_info("fio: cannot pre-read files with an IO engine"
 517                                  " that isn't seekable. Pre-read disabled.\n");
 518                         ret = warnings_fatal;
 519                 }
 520         }
 521
 522 #ifndef FIO_HAVE_FDATASYNC
 523         if (o->fdatasync_blocks) {
 524                 log_info("fio: this platform does not support fdatasync()"
 525                          " falling back to using fsync().  Use the 'fsync'"
 526                          " option instead of 'fdatasync' to get rid of"
 527                          " this warning\n");
 528                 o->fsync_blocks = o->fdatasync_blocks;
 529                 o->fdatasync_blocks = 0;
 530                 ret = warnings_fatal;
 531         }
 532 #endif
 533
 534         return ret;
 535 }
 536
 537 /*
 538  * This function leaks the buffer
 539  */
 540 static char *to_kmg(unsigned int val)
 541 {
 542         char *buf = malloc(32);
 543         char post[] = { 0, 'K', 'M', 'G', 'P', 'E', 0 };
 544         char *p = post;
 545
 546         do {
 547                 if (val & 1023)
 548                         break;
 549
 550                 val >>= 10;
 551                 p++;
 552         } while (*p);
 553
 554         snprintf(buf, 31, "%u%c", val, *p);
 555         return buf;
 556 }
 557
 558 /* External engines are specified by "external:name.o") */
 559 static const char *get_engine_name(const char *str)
 560 {
 561         char *p = strstr(str, ":");
 562
 563         if (!p)
 564                 return str;
 565
 566         p++;
 567         strip_blank_front(&p);
 568         strip_blank_end(p);
 569         return p;
 570 }
 571
 572 static int exists_and_not_file(const char *filename)
 573 {
 574         struct stat sb;
 575
 576         if (lstat(filename, &sb) == -1)
 577                 return 0;
 578
 579         /* \\.\ is the device namespace in Windows, where every file
 580          * is a device node */
 581         if (S_ISREG(sb.st_mode) && strncmp(filename, "\\\\.\\", 4) != 0)
 582                 return 0;
 583
 584         return 1;
 585 }
 586
 587 static void td_fill_rand_seeds_os(struct thread_data *td)
 588 {
 589         os_random_seed(td->rand_seeds[0], &td->bsrange_state);
 590         os_random_seed(td->rand_seeds[1], &td->verify_state);
 591         os_random_seed(td->rand_seeds[2], &td->rwmix_state);
 592
 593         if (td->o.file_service_type == FIO_FSERVICE_RANDOM)
 594                 os_random_seed(td->rand_seeds[3], &td->next_file_state);
 595
 596         os_random_seed(td->rand_seeds[5], &td->file_size_state);
 597         os_random_seed(td->rand_seeds[6], &td->trim_state);
 598
 599         if (!td_random(td))
 600                 return;
 601
 602         if (td->o.rand_repeatable)
 603                 td->rand_seeds[4] = FIO_RANDSEED * td->thread_number;
 604
 605         os_random_seed(td->rand_seeds[4], &td->random_state);
 606 }
 607
 608 static void td_fill_rand_seeds_internal(struct thread_data *td)
 609 {
 610         init_rand_seed(&td->__bsrange_state, td->rand_seeds[0]);
 611         init_rand_seed(&td->__verify_state, td->rand_seeds[1]);
 612         init_rand_seed(&td->__rwmix_state, td->rand_seeds[2]);
 613
 614         if (td->o.file_service_type == FIO_FSERVICE_RANDOM)
 615                 init_rand_seed(&td->__next_file_state, td->rand_seeds[3]);
 616
 617         init_rand_seed(&td->__file_size_state, td->rand_seeds[5]);
 618         init_rand_seed(&td->__trim_state, td->rand_seeds[6]);
 619
 620         if (!td_random(td))
 621                 return;
 622
 623         if (td->o.rand_repeatable)
 624                 td->rand_seeds[4] = FIO_RANDSEED * td->thread_number;
 625
 626         init_rand_seed(&td->__random_state, td->rand_seeds[4]);
 627 }
 628
 629 void td_fill_rand_seeds(struct thread_data *td)
 630 {
 631         if (td->o.use_os_rand)
 632                 td_fill_rand_seeds_os(td);
 633         else
 634                 td_fill_rand_seeds_internal(td);
 635
 636         init_rand_seed(&td->buf_state, td->rand_seeds[7]);
 637 }
 638
 639 /*
 640  * Initialize the various random states we need (random io, block size ranges,
 641  * read/write mix, etc).
 642  */
 643 static int init_random_state(struct thread_data *td)
 644 {
 645         int fd;
 646
 647         fd = open("/dev/urandom", O_RDONLY);
 648         if (fd == -1) {
 649                 td_verror(td, errno, "open");
 650                 return 1;
 651         }
 652
 653         if (read(fd, td->rand_seeds, sizeof(td->rand_seeds)) <
 654             (int) sizeof(td->rand_seeds)) {
 655                 td_verror(td, EIO, "read");
 656                 close(fd);
 657                 return 1;
 658         }
 659
 660         close(fd);
 661         td_fill_rand_seeds(td);
 662         return 0;
 663 }
 664
 665 /*
 666  * Adds a job to the list of things todo. Sanitizes the various options
 667  * to make sure we don't have conflicts, and initializes various
 668  * members of td.
 669  */
 670 static int add_job(struct thread_data *td, const char *jobname, int job_add_num)
 671 {
 672         const char *ddir_str[] = { NULL, "read", "write", "rw", NULL,
 673                                    "randread", "randwrite", "randrw" };
 674         unsigned int i;
 675         const char *engine;
 676         char fname[PATH_MAX];
 677         int numjobs, file_alloced;
 678
 679         /*
 680          * the def_thread is just for options, it's not a real job
 681          */
 682         if (td == &def_thread)
 683                 return 0;
 684
 685         /*
 686          * if we are just dumping the output command line, don't add the job
 687          */
 688         if (dump_cmdline) {
 689                 put_job(td);
 690                 return 0;
 691         }
 692
 693         if (profile_td_init(td))
 694                 goto err;
 695
 696         engine = get_engine_name(td->o.ioengine);
 697         td->io_ops = load_ioengine(td, engine);
 698         if (!td->io_ops) {
 699                 log_err("fio: failed to load engine %s\n", engine);
 700                 goto err;
 701         }
 702
 703         if (td->o.use_thread)
 704                 nr_thread++;
 705         else
 706                 nr_process++;
 707
 708         if (td->o.odirect)
 709                 td->io_ops->flags |= FIO_RAWIO;
 710
 711         file_alloced = 0;
 712         if (!td->o.filename && !td->files_index && !td->o.read_iolog_file) {
 713                 file_alloced = 1;
 714
 715                 if (td->o.nr_files == 1 && exists_and_not_file(jobname))
 716                         add_file(td, jobname);
 717                 else {
 718                         for (i = 0; i < td->o.nr_files; i++) {
 719                                 sprintf(fname, "%s.%d.%d", jobname,
 720                                                         td->thread_number, i);
 721                                 add_file(td, fname);
 722                         }
 723                 }
 724         }
 725
 726         if (fixup_options(td))
 727                 goto err;
 728
 729         if (td->io_ops->flags & FIO_DISKLESSIO) {
 730                 struct fio_file *f;
 731
 732                 for_each_file(td, f, i)
 733                         f->real_file_size = -1ULL;
 734         }
 735
 736         td->mutex = fio_mutex_init(0);
 737
 738         td->ts.clat_percentiles = td->o.clat_percentiles;
 739         if (td->o.overwrite_plist)
 740                 memcpy(td->ts.percentile_list, td->o.percentile_list, sizeof(td->o.percentile_list));
 741         else
 742                 memcpy(td->ts.percentile_list, def_percentile_list, sizeof(def_percentile_list));
 743
 744         td->ts.clat_stat[0].min_val = td->ts.clat_stat[1].min_val = ULONG_MAX;
 745         td->ts.slat_stat[0].min_val = td->ts.slat_stat[1].min_val = ULONG_MAX;
 746         td->ts.lat_stat[0].min_val = td->ts.lat_stat[1].min_val = ULONG_MAX;
 747         td->ts.bw_stat[0].min_val = td->ts.bw_stat[1].min_val = ULONG_MAX;
 748         td->ddir_seq_nr = td->o.ddir_seq_nr;
 749
 750         if ((td->o.stonewall || td->o.new_group) && prev_group_jobs) {
 751                 prev_group_jobs = 0;
 752                 groupid++;
 753         }
 754
 755         td->groupid = groupid;
 756         prev_group_jobs++;
 757
 758         if (init_random_state(td))
 759                 goto err;
 760
 761         if (setup_rate(td))
 762                 goto err;
 763
 764         if (td->o.write_lat_log) {
 765                 setup_log(&td->lat_log);
 766                 setup_log(&td->slat_log);
 767                 setup_log(&td->clat_log);
 768         }
 769         if (td->o.write_bw_log)
 770                 setup_log(&td->bw_log);
 771
 772         if (!td->o.name)
 773                 td->o.name = strdup(jobname);
 774
 775         if (!terse_output) {
 776                 if (!job_add_num) {
 777                         if (!strcmp(td->io_ops->name, "cpuio")) {
 778                                 log_info("%s: ioengine=cpu, cpuload=%u,"
 779                                          " cpucycle=%u\n", td->o.name,
 780                                                         td->o.cpuload,
 781                                                         td->o.cpucycle);
 782                         } else {
 783                                 char *c1, *c2, *c3, *c4;
 784
 785                                 c1 = to_kmg(td->o.min_bs[DDIR_READ]);
 786                                 c2 = to_kmg(td->o.max_bs[DDIR_READ]);
 787                                 c3 = to_kmg(td->o.min_bs[DDIR_WRITE]);
 788                                 c4 = to_kmg(td->o.max_bs[DDIR_WRITE]);
 789
 790                                 log_info("%s: (g=%d): rw=%s, bs=%s-%s/%s-%s,"
 791                                          " ioengine=%s, iodepth=%u\n",
 792                                                 td->o.name, td->groupid,
 793                                                 ddir_str[td->o.td_ddir],
 794                                                 c1, c2, c3, c4,
 795                                                 td->io_ops->name,
 796                                                 td->o.iodepth);
 797
 798                                 free(c1);
 799                                 free(c2);
 800                                 free(c3);
 801                                 free(c4);
 802                         }
 803                 } else if (job_add_num == 1)
 804                         log_info("...\n");
 805         }
 806
 807         /*
 808          * recurse add identical jobs, clear numjobs and stonewall options
 809          * as they don't apply to sub-jobs
 810          */
 811         numjobs = td->o.numjobs;
 812         while (--numjobs) {
 813                 struct thread_data *td_new = get_new_job(0, td);
 814
 815                 if (!td_new)
 816                         goto err;
 817
 818                 td_new->o.numjobs = 1;
 819                 td_new->o.stonewall = 0;
 820                 td_new->o.new_group = 0;
 821
 822                 if (file_alloced) {
 823                         td_new->o.filename = NULL;
 824                         td_new->files_index = 0;
 825                         td_new->files_size = 0;
 826                         td_new->files = NULL;
 827                 }
 828
 829                 job_add_num = numjobs - 1;
 830
 831                 if (add_job(td_new, jobname, job_add_num))
 832                         goto err;
 833         }
 834
 835         return 0;
 836 err:
 837         put_job(td);
 838         return -1;
 839 }
 840
 841 /*
 842  * Parse as if 'o' was a command line
 843  */
 844 void add_job_opts(const char **o)
 845 {
 846         struct thread_data *td, *td_parent;
 847         int i, in_global = 1;
 848         char jobname[32];
 849
 850         i = 0;
 851         td_parent = td = NULL;
 852         while (o[i]) {
 853                 if (!strncmp(o[i], "name", 4)) {
 854                         in_global = 0;
 855                         if (td)
 856                                 add_job(td, jobname, 0);
 857                         td = NULL;
 858                         sprintf(jobname, "%s", o[i] + 5);
 859                 }
 860                 if (in_global && !td_parent)
 861                         td_parent = get_new_job(1, &def_thread);
 862                 else if (!in_global && !td) {
 863                         if (!td_parent)
 864                                 td_parent = &def_thread;
 865                         td = get_new_job(0, td_parent);
 866                 }
 867                 if (in_global)
 868                         fio_options_parse(td_parent, (char **) &o[i], 1);
 869                 else
 870                         fio_options_parse(td, (char **) &o[i], 1);
 871                 i++;
 872         }
 873
 874         if (td)
 875                 add_job(td, jobname, 0);
 876 }
 877
 878 static int skip_this_section(const char *name)
 879 {
 880         int i;
 881
 882         if (!nr_job_sections)
 883                 return 0;
 884         if (!strncmp(name, "global", 6))
 885                 return 0;
 886
 887         for (i = 0; i < nr_job_sections; i++)
 888                 if (!strcmp(job_sections[i], name))
 889                         return 0;
 890
 891         return 1;
 892 }
 893
 894 static int is_empty_or_comment(char *line)
 895 {
 896         unsigned int i;
 897
 898         for (i = 0; i < strlen(line); i++) {
 899                 if (line[i] == ';')
 900                         return 1;
 901                 if (line[i] == '#')
 902                         return 1;
 903                 if (!isspace((int) line[i]) && !iscntrl((int) line[i]))
 904                         return 0;
 905         }
 906
 907         return 1;
 908 }
 909
 910 /*
 911  * This is our [ini] type file parser.
 912  */
 913 int parse_jobs_ini(char *file, int is_buf, int stonewall_flag)
 914 {
 915         unsigned int global;
 916         struct thread_data *td;
 917         char *string, *name;
 918         FILE *f;
 919         char *p;
 920         int ret = 0, stonewall;
 921         int first_sect = 1;
 922         int skip_fgets = 0;
 923         int inside_skip = 0;
 924         char **opts;
 925         int i, alloc_opts, num_opts;
 926
 927         if (is_buf)
 928                 f = NULL;
 929         else {
 930                 if (!strcmp(file, "-"))
 931                         f = stdin;
 932                 else
 933                         f = fopen(file, "r");
 934
 935                 if (!f) {
 936                         perror("fopen job file");
 937                         return 1;
 938                 }
 939         }
 940
 941         string = malloc(4096);
 942
 943         /*
 944          * it's really 256 + small bit, 280 should suffice
 945          */
 946         name = malloc(280);
 947         memset(name, 0, 280);
 948
 949         alloc_opts = 8;
 950         opts = malloc(sizeof(char *) * alloc_opts);
 951         num_opts = 0;
 952
 953         stonewall = stonewall_flag;
 954         do {
 955                 /*
 956                  * if skip_fgets is set, we already have loaded a line we
 957                  * haven't handled.
 958                  */
 959                 if (!skip_fgets) {
 960                         if (is_buf)
 961                                 p = strsep(&file, "\n");
 962                         else
 963                                 p = fgets(string, 4095, f);
 964                         if (!p)
 965                                 break;
 966                 }
 967
 968                 skip_fgets = 0;
 969                 strip_blank_front(&p);
 970                 strip_blank_end(p);
 971
 972                 if (is_empty_or_comment(p))
 973                         continue;
 974                 if (sscanf(p, "[%255[^\n]]", name) != 1) {
 975                         if (inside_skip)
 976                                 continue;
 977                         log_err("fio: option <%s> outside of [] job section\n",
 978                                                                         p);
 979                         break;
 980                 }
 981
 982                 name[strlen(name) - 1] = '\0';
 983
 984                 if (skip_this_section(name)) {
 985                         inside_skip = 1;
 986                         continue;
 987                 } else
 988                         inside_skip = 0;
 989
 990                 global = !strncmp(name, "global", 6);
 991
 992                 if (dump_cmdline) {
 993                         if (first_sect)
 994                                 log_info("fio ");
 995                         if (!global)
 996                                 log_info("--name=%s ", name);
 997                         first_sect = 0;
 998                 }
 999
1000                 td = get_new_job(global, &def_thread);
1001                 if (!td) {
1002                         ret = 1;
1003                         break;
1004                 }
1005
1006                 /*
1007                  * Seperate multiple job files by a stonewall
1008                  */
1009                 if (!global && stonewall) {
1010                         td->o.stonewall = stonewall;
1011                         stonewall = 0;
1012                 }
1013
1014                 num_opts = 0;
1015                 memset(opts, 0, alloc_opts * sizeof(char *));
1016
1017                 while (1) {
1018                         if (is_buf)
1019                                 p = strsep(&file, "\n");
1020                         else
1021                                 p = fgets(string, 4096, f);
1022                         if (!p)
1023                                 break;
1024
1025                         if (is_empty_or_comment(p))
1026                                 continue;
1027
1028                         strip_blank_front(&p);
1029
1030                         /*
1031                          * new section, break out and make sure we don't
1032                          * fgets() a new line at the top.
1033                          */
1034                         if (p[0] == '[') {
1035                                 skip_fgets = 1;
1036                                 break;
1037                         }
1038
1039                         strip_blank_end(p);
1040
1041                         if (num_opts == alloc_opts) {
1042                                 alloc_opts <<= 1;
1043                                 opts = realloc(opts,
1044                                                 alloc_opts * sizeof(char *));
1045                         }
1046
1047                         opts[num_opts] = strdup(p);
1048                         num_opts++;
1049                 }
1050
1051                 ret = fio_options_parse(td, opts, num_opts);
1052                 if (!ret) {
1053                         if (dump_cmdline)
1054                                 for (i = 0; i < num_opts; i++)
1055                                         log_info("--%s ", opts[i]);
1056
1057                         ret = add_job(td, name, 0);
1058                 } else {
1059                         log_err("fio: job %s dropped\n", name);
1060                         put_job(td);
1061                 }
1062
1063                 for (i = 0; i < num_opts; i++)
1064                         free(opts[i]);
1065                 num_opts = 0;
1066         } while (!ret);
1067
1068         if (dump_cmdline)
1069                 log_info("\n");
1070
1071         for (i = 0; i < num_opts; i++)
1072                 free(opts[i]);
1073
1074         free(string);
1075         free(name);
1076         free(opts);
1077         if (!is_buf && f != stdin)
1078                 fclose(f);
1079         return ret;
1080 }
1081
1082 static int fill_def_thread(void)
1083 {
1084         memset(&def_thread, 0, sizeof(def_thread));
1085
1086         fio_getaffinity(getpid(), &def_thread.o.cpumask);
1087         def_thread.o.timeout = def_timeout;
1088
1089         /*
1090          * fill default options
1091          */
1092         fio_fill_default_options(&def_thread);
1093         return 0;
1094 }
1095
1096 static void usage(const char *name)
1097 {
1098         printf("%s\n", fio_version_string);
1099         printf("%s [options] [job options] <job file(s)>\n", name);
1100         printf("\t--debug=options\tEnable debug logging\n");
1101         printf("\t--output\tWrite output to file\n");
1102         printf("\t--timeout\tRuntime in seconds\n");
1103         printf("\t--latency-log\tGenerate per-job latency logs\n");
1104         printf("\t--bandwidth-log\tGenerate per-job bandwidth logs\n");
1105         printf("\t--minimal\tMinimal (terse) output\n");
1106         printf("\t--version\tPrint version info and exit\n");
1107         printf("\t--terse-version=x Terse version output format\n");
1108         printf("\t--help\t\tPrint this page\n");
1109         printf("\t--cmdhelp=cmd\tPrint command help, \"all\" for all of"
1110                 " them\n");
1111         printf("\t--showcmd\tTurn a job file into command line options\n");
1112         printf("\t--eta=when\tWhen ETA estimate should be printed\n");
1113         printf("\t          \tMay be \"always\", \"never\" or \"auto\"\n");
1114         printf("\t--readonly\tTurn on safety read-only checks, preventing"
1115                 " writes\n");
1116         printf("\t--section=name\tOnly run specified section in job file\n");
1117         printf("\t--alloc-size=kb\tSet smalloc pool to this size in kb"
1118                 " (def 1024)\n");
1119         printf("\t--warnings-fatal Fio parser warnings are fatal\n");
1120         printf("\t--max-jobs\tMaximum number of threads/processes to support\n");
1121         printf("\t--server\tStart a backend fio server\n");
1122         printf("\t--client=hostname Talk to remove backend fio server at hostname\n");
1123         printf("\t--net-port=port\tUse specified port for client/server connection\n");
1124         printf("\nFio was written by Jens Axboe <jens.axboe@oracle.com>");
1125         printf("\n                   Jens Axboe <jaxboe@fusionio.com>\n");
1126 }
1127
1128 #ifdef FIO_INC_DEBUG
1129 struct debug_level debug_levels[] = {
1130         { .name = "process",    .shift = FD_PROCESS, },
1131         { .name = "file",       .shift = FD_FILE, },
1132         { .name = "io",         .shift = FD_IO, },
1133         { .name = "mem",        .shift = FD_MEM, },
1134         { .name = "blktrace",   .shift = FD_BLKTRACE },
1135         { .name = "verify",     .shift = FD_VERIFY },
1136         { .name = "random",     .shift = FD_RANDOM },
1137         { .name = "parse",      .shift = FD_PARSE },
1138         { .name = "diskutil",   .shift = FD_DISKUTIL },
1139         { .name = "job",        .shift = FD_JOB },
1140         { .name = "mutex",      .shift = FD_MUTEX },
1141         { .name = "profile",    .shift = FD_PROFILE },
1142         { .name = "time",       .shift = FD_TIME },
1143         { .name = "net",        .shift = FD_NET },
1144         { .name = NULL, },
1145 };
1146
1147 static int set_debug(const char *string)
1148 {
1149         struct debug_level *dl;
1150         char *p = (char *) string;
1151         char *opt;
1152         int i;
1153
1154         if (!strcmp(string, "?") || !strcmp(string, "help")) {
1155                 log_info("fio: dumping debug options:");
1156                 for (i = 0; debug_levels[i].name; i++) {
1157                         dl = &debug_levels[i];
1158                         log_info("%s,", dl->name);
1159                 }
1160                 log_info("all\n");
1161                 return 1;
1162         }
1163
1164         while ((opt = strsep(&p, ",")) != NULL) {
1165                 int found = 0;
1166
1167                 if (!strncmp(opt, "all", 3)) {
1168                         log_info("fio: set all debug options\n");
1169                         fio_debug = ~0UL;
1170                         continue;
1171                 }
1172
1173                 for (i = 0; debug_levels[i].name; i++) {
1174                         dl = &debug_levels[i];
1175                         found = !strncmp(opt, dl->name, strlen(dl->name));
1176                         if (!found)
1177                                 continue;
1178
1179                         if (dl->shift == FD_JOB) {
1180                                 opt = strchr(opt, ':');
1181                                 if (!opt) {
1182                                         log_err("fio: missing job number\n");
1183                                         break;
1184                                 }
1185                                 opt++;
1186                                 fio_debug_jobno = atoi(opt);
1187                                 log_info("fio: set debug jobno %d\n",
1188                                                         fio_debug_jobno);
1189                         } else {
1190                                 log_info("fio: set debug option %s\n", opt);
1191                                 fio_debug |= (1UL << dl->shift);
1192                         }
1193                         break;
1194                 }
1195
1196                 if (!found)
1197                         log_err("fio: debug mask %s not found\n", opt);
1198         }
1199         return 0;
1200 }
1201 #else
1202 static int set_debug(const char *string)
1203 {
1204         log_err("fio: debug tracing not included in build\n");
1205         return 1;
1206 }
1207 #endif
1208
1209 static void fio_options_fill_optstring(void)
1210 {
1211         char *ostr = cmd_optstr;
1212         int i, c;
1213
1214         c = i = 0;
1215         while (l_opts[i].name) {
1216                 ostr[c++] = l_opts[i].val;
1217                 if (l_opts[i].has_arg == required_argument)
1218                         ostr[c++] = ':';
1219                 else if (l_opts[i].has_arg == optional_argument) {
1220                         ostr[c++] = ':';
1221                         ostr[c++] = ':';
1222                 }
1223                 i++;
1224         }
1225         ostr[c] = '\0';
1226 }
1227
1228 int parse_cmd_line(int argc, char *argv[])
1229 {
1230         struct thread_data *td = NULL;
1231         int c, ini_idx = 0, lidx, ret = 0, do_exit = 0, exit_val = 0;
1232         char *ostr = cmd_optstr;
1233         int daemonize_server = 0;
1234         char *cur_client = NULL;
1235         int backend = 0;
1236
1237         while ((c = getopt_long_only(argc, argv, ostr, l_opts, &lidx)) != -1) {
1238                 switch (c) {
1239                 case 'a':
1240                         fio_client_add_cmd_option(cur_client, argv[optind-1]);
1241                         smalloc_pool_size = atoi(optarg);
1242                         break;
1243                 case 't':
1244                         fio_client_add_cmd_option(cur_client, argv[optind-1]);
1245                         def_timeout = atoi(optarg);
1246                         break;
1247                 case 'l':
1248                         fio_client_add_cmd_option(cur_client, argv[optind-1]);
1249                         write_lat_log = 1;
1250                         break;
1251                 case 'b':
1252                         fio_client_add_cmd_option(cur_client, argv[optind-1]);
1253                         write_bw_log = 1;
1254                         break;
1255                 case 'o':
1256                         fio_client_add_cmd_option(cur_client, argv[optind-1]);
1257                         f_out = fopen(optarg, "w+");
1258                         if (!f_out) {
1259                                 perror("fopen output");
1260                                 exit(1);
1261                         }
1262                         f_err = f_out;
1263                         break;
1264                 case 'm':
1265                         fio_client_add_cmd_option(cur_client, argv[optind-1]);
1266                         terse_output = 1;
1267                         break;
1268                 case 'h':
1269                         usage(argv[0]);
1270                         exit(0);
1271                 case 'c':
1272                         exit(fio_show_option_help(optarg));
1273                 case 's':
1274                         fio_client_add_cmd_option(cur_client, argv[optind-1]);
1275                         dump_cmdline = 1;
1276                         break;
1277                 case 'r':
1278                         fio_client_add_cmd_option(cur_client, argv[optind-1]);
1279                         read_only = 1;
1280                         break;
1281                 case 'v':
1282                         log_info("%s\n", fio_version_string);
1283                         exit(0);
1284                 case 'V':
1285                         fio_client_add_cmd_option(cur_client, argv[optind-1]);
1286                         terse_version = atoi(optarg);
1287                         if (terse_version != 2) {
1288                                 log_err("fio: bad terse version format\n");
1289                                 exit_val = 1;
1290                                 do_exit++;
1291                         }
1292                         break;
1293                 case 'e':
1294                         fio_client_add_cmd_option(cur_client, argv[optind-1]);
1295                         if (!strcmp("always", optarg))
1296                                 eta_print = FIO_ETA_ALWAYS;
1297                         else if (!strcmp("never", optarg))
1298                                 eta_print = FIO_ETA_NEVER;
1299                         break;
1300                 case 'd':
1301                         fio_client_add_cmd_option(cur_client, argv[optind-1]);
1302                         if (set_debug(optarg))
1303                                 do_exit++;
1304                         break;
1305                 case 'x': {
1306                         size_t new_size;
1307
1308                         fio_client_add_cmd_option(cur_client, argv[optind-1]);
1309
1310                         if (!strcmp(optarg, "global")) {
1311                                 log_err("fio: can't use global as only "
1312                                         "section\n");
1313                                 do_exit++;
1314                                 exit_val = 1;
1315                                 break;
1316                         }
1317                         new_size = (nr_job_sections + 1) * sizeof(char *);
1318                         job_sections = realloc(job_sections, new_size);
1319                         job_sections[nr_job_sections] = strdup(optarg);
1320                         nr_job_sections++;
1321                         break;
1322                         }
1323                 case 'p':
1324                         fio_client_add_cmd_option(cur_client, argv[optind-1]);
1325                         exec_profile = strdup(optarg);
1326                         break;
1327                 case FIO_GETOPT_JOB: {
1328                         const char *opt = l_opts[lidx].name;
1329                         char *val = optarg;
1330
1331                         fio_client_add_cmd_option(cur_client, argv[optind-1]);
1332
1333                         if (!strncmp(opt, "name", 4) && td) {
1334                                 ret = add_job(td, td->o.name ?: "fio", 0);
1335                                 if (ret)
1336                                         return 0;
1337                                 td = NULL;
1338                         }
1339                         if (!td) {
1340                                 int is_section = !strncmp(opt, "name", 4);
1341                                 int global = 0;
1342
1343                                 if (!is_section || !strncmp(val, "global", 6))
1344                                         global = 1;
1345
1346                                 if (is_section && skip_this_section(val))
1347                                         continue;
1348
1349                                 td = get_new_job(global, &def_thread);
1350                                 if (!td)
1351                                         return 0;
1352                         }
1353
1354                         ret = fio_cmd_option_parse(td, opt, val);
1355                         break;
1356                 }
1357                 case 'w':
1358                         fio_client_add_cmd_option(cur_client, argv[optind-1]);
1359                         warnings_fatal = 1;
1360                         break;
1361                 case 'j':
1362                         fio_client_add_cmd_option(cur_client, argv[optind-1]);
1363                         max_jobs = atoi(optarg);
1364                         if (!max_jobs || max_jobs > REAL_MAX_JOBS) {
1365                                 log_err("fio: invalid max jobs: %d\n", max_jobs);
1366                                 do_exit++;
1367                                 exit_val = 1;
1368                         }
1369                         break;
1370                 case 'S':
1371                         if (nr_clients) {
1372                                 log_err("fio: can't be both client and server\n");
1373                                 do_exit++;
1374                                 exit_val = 1;
1375                                 break;
1376                         }
1377                         is_backend = 1;
1378                         backend = 1;
1379                         break;
1380                 case 'D':
1381                         daemonize_server = 1;
1382                         break;
1383                 case 'P':
1384                         fio_net_port = atoi(optarg);
1385                         break;
1386                 case 'C':
1387                         if (is_backend) {
1388                                 log_err("fio: can't be both client and server\n");
1389                                 do_exit++;
1390                                 exit_val = 1;
1391                                 break;
1392                         }
1393                         fio_client_add(optarg);
1394                         cur_client = optarg;
1395                         break;
1396                 default:
1397                         do_exit++;
1398                         exit_val = 1;
1399                         break;
1400                 }
1401                 if (do_exit)
1402                         break;
1403         }
1404
1405         if (do_exit)
1406                 exit(exit_val);
1407
1408         if (nr_clients && fio_clients_connect()) {
1409                 do_exit++;
1410                 exit_val = 1;
1411                 return -1;
1412         }
1413
1414         if (is_backend && backend)
1415                 return fio_start_server(daemonize_server);
1416
1417         if (td) {
1418                 if (!ret)
1419                         ret = add_job(td, td->o.name ?: "fio", 0);
1420         }
1421
1422         while (optind < argc) {
1423                 ini_idx++;
1424                 ini_file = realloc(ini_file, ini_idx * sizeof(char *));
1425                 ini_file[ini_idx - 1] = strdup(argv[optind]);
1426                 optind++;
1427         }
1428
1429         return ini_idx;
1430 }
1431
1432 int parse_options(int argc, char *argv[])
1433 {
1434         int job_files, i;
1435
1436         f_out = stdout;
1437         f_err = stderr;
1438
1439         fio_options_fill_optstring();
1440         fio_options_dup_and_init(l_opts);
1441
1442         atexit(free_shm);
1443
1444         if (fill_def_thread())
1445                 return 1;
1446
1447         job_files = parse_cmd_line(argc, argv);
1448
1449         if (job_files > 0) {
1450                 for (i = 0; i < job_files; i++) {
1451                         if (fill_def_thread())
1452                                 return 1;
1453                         if (nr_clients) {
1454                                 if (fio_clients_send_ini(ini_file[i]))
1455                                         return 1;
1456                                 free(ini_file[i]);
1457                         } else if (!is_backend) {
1458                                 if (parse_jobs_ini(ini_file[i], 0, i))
1459                                         return 1;
1460                                 free(ini_file[i]);
1461                         }
1462                 }
1463         }
1464
1465         free(ini_file);
1466         options_mem_free(&def_thread);
1467
1468         if (!thread_number) {
1469                 if (dump_cmdline)
1470                         return 0;
1471                 if (exec_profile)
1472                         return 0;
1473                 if (is_backend || nr_clients)
1474                         return 0;
1475
1476                 log_err("No jobs(s) defined\n\n");
1477                 usage(argv[0]);
1478                 return 1;
1479         }
1480
1481         if (def_thread.o.gtod_offload) {
1482                 fio_gtod_init();
1483                 fio_gtod_offload = 1;
1484                 fio_gtod_cpu = def_thread.o.gtod_cpu;
1485         }
1486
1487         log_info("%s\n", fio_version_string);
1488         return 0;
1489 }