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 const char fio_version_string[] = FIO_VERSION;
  27
  28 #define FIO_RANDSEED            (0xb1899bedUL)
  29
  30 static char **ini_file;
  31 static int max_jobs = FIO_MAX_JOBS;
  32 static int dump_cmdline;
  33 static int def_timeout;
  34
  35 static struct thread_data def_thread;
  36 struct thread_data *threads = NULL;
  37
  38 int exitall_on_terminate = 0;
  39 int terse_output = 0;
  40 int eta_print;
  41 unsigned long long mlock_size = 0;
  42 FILE *f_out = NULL;
  43 FILE *f_err = NULL;
  44 char **job_sections = NULL;
  45 int nr_job_sections = 0;
  46 char *exec_profile = NULL;
  47 int warnings_fatal = 0;
  48 int terse_version = 3;
  49 int is_backend = 0;
  50 int nr_clients = 0;
  51 int log_syslog = 0;
  52
  53 int write_bw_log = 0;
  54 int read_only = 0;
  55
  56 static int write_lat_log;
  57
  58 static int prev_group_jobs;
  59
  60 unsigned long fio_debug = 0;
  61 unsigned int fio_debug_jobno = -1;
  62 unsigned int *fio_debug_jobp = NULL;
  63
  64 static char cmd_optstr[256];
  65 static int did_arg;
  66
  67 const fio_fp64_t def_percentile_list[FIO_IO_U_LIST_MAX_LEN] = {
  68         { .u.f  =  1.00 },
  69         { .u.f  =  5.00 },
  70         { .u.f  = 10.00 },
  71         { .u.f  = 20.00 },
  72         { .u.f  = 30.00 },
  73         { .u.f  = 40.00 },
  74         { .u.f  = 50.00 },
  75         { .u.f  = 60.00 },
  76         { .u.f  = 70.00 },
  77         { .u.f  = 80.00 },
  78         { .u.f  = 90.00 },
  79         { .u.f  = 95.00 },
  80         { .u.f  = 99.00 },
  81         { .u.f  = 99.50 },
  82         { .u.f  = 99.90 },
  83         { .u.f  = 99.95 },
  84         { .u.f  = 99.99 },
  85 };
  86
  87 #define FIO_CLIENT_FLAG         (1 << 16)
  88
  89 /*
  90  * Command line options. These will contain the above, plus a few
  91  * extra that only pertain to fio itself and not jobs.
  92  */
  93 static struct option l_opts[FIO_NR_OPTIONS] = {
  94         {
  95                 .name           = (char *) "output",
  96                 .has_arg        = required_argument,
  97                 .val            = 'o' | FIO_CLIENT_FLAG,
  98         },
  99         {
 100                 .name           = (char *) "timeout",
 101                 .has_arg        = required_argument,
 102                 .val            = 't' | FIO_CLIENT_FLAG,
 103         },
 104         {
 105                 .name           = (char *) "latency-log",
 106                 .has_arg        = required_argument,
 107                 .val            = 'l' | FIO_CLIENT_FLAG,
 108         },
 109         {
 110                 .name           = (char *) "bandwidth-log",
 111                 .has_arg        = required_argument,
 112                 .val            = 'b' | FIO_CLIENT_FLAG,
 113         },
 114         {
 115                 .name           = (char *) "minimal",
 116                 .has_arg        = optional_argument,
 117                 .val            = 'm' | FIO_CLIENT_FLAG,
 118         },
 119         {
 120                 .name           = (char *) "version",
 121                 .has_arg        = no_argument,
 122                 .val            = 'v' | FIO_CLIENT_FLAG,
 123         },
 124         {
 125                 .name           = (char *) "help",
 126                 .has_arg        = no_argument,
 127                 .val            = 'h' | FIO_CLIENT_FLAG,
 128         },
 129         {
 130                 .name           = (char *) "cmdhelp",
 131                 .has_arg        = optional_argument,
 132                 .val            = 'c' | FIO_CLIENT_FLAG,
 133         },
 134         {
 135                 .name              = (char *) "enghelp",
 136                 .has_arg        = optional_argument,
 137                 .val                = 'i' | FIO_CLIENT_FLAG,
 138         },
 139         {
 140                 .name           = (char *) "showcmd",
 141                 .has_arg        = no_argument,
 142                 .val            = 's' | FIO_CLIENT_FLAG,
 143         },
 144         {
 145                 .name           = (char *) "readonly",
 146                 .has_arg        = no_argument,
 147                 .val            = 'r' | FIO_CLIENT_FLAG,
 148         },
 149         {
 150                 .name           = (char *) "eta",
 151                 .has_arg        = required_argument,
 152                 .val            = 'e' | FIO_CLIENT_FLAG,
 153         },
 154         {
 155                 .name           = (char *) "debug",
 156                 .has_arg        = required_argument,
 157                 .val            = 'd' | FIO_CLIENT_FLAG,
 158         },
 159         {
 160                 .name           = (char *) "section",
 161                 .has_arg        = required_argument,
 162                 .val            = 'x' | FIO_CLIENT_FLAG,
 163         },
 164         {
 165                 .name           = (char *) "alloc-size",
 166                 .has_arg        = required_argument,
 167                 .val            = 'a' | FIO_CLIENT_FLAG,
 168         },
 169         {
 170                 .name           = (char *) "profile",
 171                 .has_arg        = required_argument,
 172                 .val            = 'p' | FIO_CLIENT_FLAG,
 173         },
 174         {
 175                 .name           = (char *) "warnings-fatal",
 176                 .has_arg        = no_argument,
 177                 .val            = 'w' | FIO_CLIENT_FLAG,
 178         },
 179         {
 180                 .name           = (char *) "max-jobs",
 181                 .has_arg        = required_argument,
 182                 .val            = 'j' | FIO_CLIENT_FLAG,
 183         },
 184         {
 185                 .name           = (char *) "terse-version",
 186                 .has_arg        = required_argument,
 187                 .val            = 'V' | FIO_CLIENT_FLAG,
 188         },
 189         {
 190                 .name           = (char *) "server",
 191                 .has_arg        = optional_argument,
 192                 .val            = 'S',
 193         },
 194         {       .name           = (char *) "daemonize",
 195                 .has_arg        = required_argument,
 196                 .val            = 'D',
 197         },
 198         {
 199                 .name           = (char *) "client",
 200                 .has_arg        = required_argument,
 201                 .val            = 'C',
 202         },
 203         {
 204                 .name           = NULL,
 205         },
 206 };
 207
 208 static void free_shm(void)
 209 {
 210         struct shmid_ds sbuf;
 211
 212         if (threads) {
 213                 void *tp = threads;
 214
 215                 threads = NULL;
 216                 file_hash_exit();
 217                 flow_exit();
 218                 fio_debug_jobp = NULL;
 219                 shmdt(tp);
 220                 shmctl(shm_id, IPC_RMID, &sbuf);
 221         }
 222
 223         scleanup();
 224 }
 225
 226 /*
 227  * The thread area is shared between the main process and the job
 228  * threads/processes. So setup a shared memory segment that will hold
 229  * all the job info. We use the end of the region for keeping track of
 230  * open files across jobs, for file sharing.
 231  */
 232 static int setup_thread_area(void)
 233 {
 234         void *hash;
 235
 236         if (threads)
 237                 return 0;
 238
 239         /*
 240          * 1024 is too much on some machines, scale max_jobs if
 241          * we get a failure that looks like too large a shm segment
 242          */
 243         do {
 244                 size_t size = max_jobs * sizeof(struct thread_data);
 245
 246                 size += file_hash_size;
 247                 size += sizeof(unsigned int);
 248
 249                 shm_id = shmget(0, size, IPC_CREAT | 0600);
 250                 if (shm_id != -1)
 251                         break;
 252                 if (errno != EINVAL && errno != ENOMEM) {
 253                         perror("shmget");
 254                         break;
 255                 }
 256
 257                 max_jobs >>= 1;
 258         } while (max_jobs);
 259
 260         if (shm_id == -1)
 261                 return 1;
 262
 263         threads = shmat(shm_id, NULL, 0);
 264         if (threads == (void *) -1) {
 265                 perror("shmat");
 266                 return 1;
 267         }
 268
 269         memset(threads, 0, max_jobs * sizeof(struct thread_data));
 270         hash = (void *) threads + max_jobs * sizeof(struct thread_data);
 271         fio_debug_jobp = (void *) hash + file_hash_size;
 272         *fio_debug_jobp = -1;
 273         file_hash_init(hash);
 274
 275         flow_init();
 276
 277         return 0;
 278 }
 279
 280 /*
 281  * Return a free job structure.
 282  */
 283 static struct thread_data *get_new_job(int global, struct thread_data *parent,
 284                                        int preserve_eo)
 285 {
 286         struct thread_data *td;
 287
 288         if (global)
 289                 return &def_thread;
 290         if (setup_thread_area()) {
 291                 log_err("error: failed to setup shm segment\n");
 292                 return NULL;
 293         }
 294         if (thread_number >= max_jobs) {
 295                 log_err("error: maximum number of jobs (%d) reached.\n",
 296                                 max_jobs);
 297                 return NULL;
 298         }
 299
 300         td = &threads[thread_number++];
 301         *td = *parent;
 302
 303         td->io_ops = NULL;
 304         if (!preserve_eo)
 305                 td->eo = NULL;
 306
 307         td->o.uid = td->o.gid = -1U;
 308
 309         dup_files(td, parent);
 310         fio_options_mem_dupe(td);
 311
 312         profile_add_hooks(td);
 313
 314         td->thread_number = thread_number;
 315         return td;
 316 }
 317
 318 static void put_job(struct thread_data *td)
 319 {
 320         if (td == &def_thread)
 321                 return;
 322
 323         profile_td_exit(td);
 324         flow_exit_job(td);
 325
 326         if (td->error)
 327                 log_info("fio: %s\n", td->verror);
 328
 329         fio_options_free(td);
 330         if (td->io_ops)
 331                 free_ioengine(td);
 332
 333         memset(&threads[td->thread_number - 1], 0, sizeof(*td));
 334         thread_number--;
 335 }
 336
 337 static int __setup_rate(struct thread_data *td, enum fio_ddir ddir)
 338 {
 339         unsigned int bs = td->o.min_bs[ddir];
 340
 341         assert(ddir_rw(ddir));
 342
 343         if (td->o.rate[ddir])
 344                 td->rate_bps[ddir] = td->o.rate[ddir];
 345         else
 346                 td->rate_bps[ddir] = td->o.rate_iops[ddir] * bs;
 347
 348         if (!td->rate_bps[ddir]) {
 349                 log_err("rate lower than supported\n");
 350                 return -1;
 351         }
 352
 353         td->rate_pending_usleep[ddir] = 0;
 354         return 0;
 355 }
 356
 357 static int setup_rate(struct thread_data *td)
 358 {
 359         int ret = 0;
 360
 361         if (td->o.rate[DDIR_READ] || td->o.rate_iops[DDIR_READ])
 362                 ret = __setup_rate(td, DDIR_READ);
 363         if (td->o.rate[DDIR_WRITE] || td->o.rate_iops[DDIR_WRITE])
 364                 ret |= __setup_rate(td, DDIR_WRITE);
 365
 366         return ret;
 367 }
 368
 369 static int fixed_block_size(struct thread_options *o)
 370 {
 371         return o->min_bs[DDIR_READ] == o->max_bs[DDIR_READ] &&
 372                 o->min_bs[DDIR_WRITE] == o->max_bs[DDIR_WRITE] &&
 373                 o->min_bs[DDIR_READ] == o->min_bs[DDIR_WRITE];
 374 }
 375
 376 /*
 377  * Lazy way of fixing up options that depend on each other. We could also
 378  * define option callback handlers, but this is easier.
 379  */
 380 static int fixup_options(struct thread_data *td)
 381 {
 382         struct thread_options *o = &td->o;
 383         int ret = 0;
 384
 385 #ifndef FIO_HAVE_PSHARED_MUTEX
 386         if (!o->use_thread) {
 387                 log_info("fio: this platform does not support process shared"
 388                          " mutexes, forcing use of threads. Use the 'thread'"
 389                          " option to get rid of this warning.\n");
 390                 o->use_thread = 1;
 391                 ret = warnings_fatal;
 392         }
 393 #endif
 394
 395         if (o->write_iolog_file && o->read_iolog_file) {
 396                 log_err("fio: read iolog overrides write_iolog\n");
 397                 free(o->write_iolog_file);
 398                 o->write_iolog_file = NULL;
 399                 ret = warnings_fatal;
 400         }
 401
 402         /*
 403          * only really works with 1 file
 404          */
 405         if (o->zone_size && o->open_files == 1)
 406                 o->zone_size = 0;
 407
 408         /*
 409          * If zone_range isn't specified, backward compatibility dictates it
 410          * should be made equal to zone_size.
 411          */
 412         if (o->zone_size && !o->zone_range)
 413                 o->zone_range = o->zone_size;
 414
 415         /*
 416          * Reads can do overwrites, we always need to pre-create the file
 417          */
 418         if (td_read(td) || td_rw(td))
 419                 o->overwrite = 1;
 420
 421         if (!o->min_bs[DDIR_READ])
 422                 o->min_bs[DDIR_READ] = o->bs[DDIR_READ];
 423         if (!o->max_bs[DDIR_READ])
 424                 o->max_bs[DDIR_READ] = o->bs[DDIR_READ];
 425         if (!o->min_bs[DDIR_WRITE])
 426                 o->min_bs[DDIR_WRITE] = o->bs[DDIR_WRITE];
 427         if (!o->max_bs[DDIR_WRITE])
 428                 o->max_bs[DDIR_WRITE] = o->bs[DDIR_WRITE];
 429
 430         o->rw_min_bs = min(o->min_bs[DDIR_READ], o->min_bs[DDIR_WRITE]);
 431
 432         /*
 433          * For random IO, allow blockalign offset other than min_bs.
 434          */
 435         if (!o->ba[DDIR_READ] || !td_random(td))
 436                 o->ba[DDIR_READ] = o->min_bs[DDIR_READ];
 437         if (!o->ba[DDIR_WRITE] || !td_random(td))
 438                 o->ba[DDIR_WRITE] = o->min_bs[DDIR_WRITE];
 439
 440         if ((o->ba[DDIR_READ] != o->min_bs[DDIR_READ] ||
 441             o->ba[DDIR_WRITE] != o->min_bs[DDIR_WRITE]) &&
 442             !o->norandommap) {
 443                 log_err("fio: Any use of blockalign= turns off randommap\n");
 444                 o->norandommap = 1;
 445                 ret = warnings_fatal;
 446         }
 447
 448         if (!o->file_size_high)
 449                 o->file_size_high = o->file_size_low;
 450
 451         if (o->norandommap && o->verify != VERIFY_NONE
 452             && !fixed_block_size(o))  {
 453                 log_err("fio: norandommap given for variable block sizes, "
 454                         "verify disabled\n");
 455                 o->verify = VERIFY_NONE;
 456                 ret = warnings_fatal;
 457         }
 458         if (o->bs_unaligned && (o->odirect || td->io_ops->flags & FIO_RAWIO))
 459                 log_err("fio: bs_unaligned may not work with raw io\n");
 460
 461         /*
 462          * thinktime_spin must be less than thinktime
 463          */
 464         if (o->thinktime_spin > o->thinktime)
 465                 o->thinktime_spin = o->thinktime;
 466
 467         /*
 468          * The low water mark cannot be bigger than the iodepth
 469          */
 470         if (o->iodepth_low > o->iodepth || !o->iodepth_low) {
 471                 /*
 472                  * syslet work around - if the workload is sequential,
 473                  * we want to let the queue drain all the way down to
 474                  * avoid seeking between async threads
 475                  */
 476                 if (!strcmp(td->io_ops->name, "syslet-rw") && !td_random(td))
 477                         o->iodepth_low = 1;
 478                 else
 479                         o->iodepth_low = o->iodepth;
 480         }
 481
 482         /*
 483          * If batch number isn't set, default to the same as iodepth
 484          */
 485         if (o->iodepth_batch > o->iodepth || !o->iodepth_batch)
 486                 o->iodepth_batch = o->iodepth;
 487
 488         if (o->nr_files > td->files_index)
 489                 o->nr_files = td->files_index;
 490
 491         if (o->open_files > o->nr_files || !o->open_files)
 492                 o->open_files = o->nr_files;
 493
 494         if (((o->rate[0] + o->rate[1]) && (o->rate_iops[0] + o->rate_iops[1]))||
 495             ((o->ratemin[0] + o->ratemin[1]) && (o->rate_iops_min[0] +
 496                 o->rate_iops_min[1]))) {
 497                 log_err("fio: rate and rate_iops are mutually exclusive\n");
 498                 ret = 1;
 499         }
 500         if ((o->rate[0] < o->ratemin[0]) || (o->rate[1] < o->ratemin[1]) ||
 501             (o->rate_iops[0] < o->rate_iops_min[0]) ||
 502             (o->rate_iops[1] < o->rate_iops_min[1])) {
 503                 log_err("fio: minimum rate exceeds rate\n");
 504                 ret = 1;
 505         }
 506
 507         if (!o->timeout && o->time_based) {
 508                 log_err("fio: time_based requires a runtime/timeout setting\n");
 509                 o->time_based = 0;
 510                 ret = warnings_fatal;
 511         }
 512
 513         if (o->fill_device && !o->size)
 514                 o->size = -1ULL;
 515
 516         if (o->verify != VERIFY_NONE) {
 517                 if (td_write(td) && o->do_verify && o->numjobs > 1) {
 518                         log_info("Multiple writers may overwrite blocks that "
 519                                 "belong to other jobs. This can cause "
 520                                 "verification failures.\n");
 521                         ret = warnings_fatal;
 522                 }
 523
 524                 o->refill_buffers = 1;
 525                 if (o->max_bs[DDIR_WRITE] != o->min_bs[DDIR_WRITE] &&
 526                     !o->verify_interval)
 527                         o->verify_interval = o->min_bs[DDIR_WRITE];
 528         }
 529
 530         if (o->pre_read) {
 531                 o->invalidate_cache = 0;
 532                 if (td->io_ops->flags & FIO_PIPEIO) {
 533                         log_info("fio: cannot pre-read files with an IO engine"
 534                                  " that isn't seekable. Pre-read disabled.\n");
 535                         ret = warnings_fatal;
 536                 }
 537         }
 538
 539 #ifndef FIO_HAVE_FDATASYNC
 540         if (o->fdatasync_blocks) {
 541                 log_info("fio: this platform does not support fdatasync()"
 542                          " falling back to using fsync().  Use the 'fsync'"
 543                          " option instead of 'fdatasync' to get rid of"
 544                          " this warning\n");
 545                 o->fsync_blocks = o->fdatasync_blocks;
 546                 o->fdatasync_blocks = 0;
 547                 ret = warnings_fatal;
 548         }
 549 #endif
 550
 551 #ifdef WIN32
 552         /*
 553          * Windows doesn't support O_DIRECT or O_SYNC with the _open interface,
 554          * so fail if we're passed those flags
 555          */
 556         if ((td->io_ops->flags & FIO_SYNCIO) && (td->o.odirect || td->o.sync_io)) {
 557                 log_err("fio: Windows does not support direct or non-buffered io with"
 558                                 " the synchronous ioengines. Use the 'windowsaio' ioengine"
 559                                 " with 'direct=1' and 'iodepth=1' instead.\n");
 560                 ret = 1;
 561         }
 562 #endif
 563
 564         /*
 565          * For fully compressible data, just zero them at init time.
 566          * It's faster than repeatedly filling it.
 567          */
 568         if (td->o.compress_percentage == 100) {
 569                 td->o.zero_buffers = 1;
 570                 td->o.compress_percentage = 0;
 571         }
 572
 573         return ret;
 574 }
 575
 576 /*
 577  * This function leaks the buffer
 578  */
 579 static char *to_kmg(unsigned int val)
 580 {
 581         char *buf = malloc(32);
 582         char post[] = { 0, 'K', 'M', 'G', 'P', 'E', 0 };
 583         char *p = post;
 584
 585         do {
 586                 if (val & 1023)
 587                         break;
 588
 589                 val >>= 10;
 590                 p++;
 591         } while (*p);
 592
 593         snprintf(buf, 31, "%u%c", val, *p);
 594         return buf;
 595 }
 596
 597 /* External engines are specified by "external:name.o") */
 598 static const char *get_engine_name(const char *str)
 599 {
 600         char *p = strstr(str, ":");
 601
 602         if (!p)
 603                 return str;
 604
 605         p++;
 606         strip_blank_front(&p);
 607         strip_blank_end(p);
 608         return p;
 609 }
 610
 611 static int exists_and_not_file(const char *filename)
 612 {
 613         struct stat sb;
 614
 615         if (lstat(filename, &sb) == -1)
 616                 return 0;
 617
 618         /* \\.\ is the device namespace in Windows, where every file
 619          * is a device node */
 620         if (S_ISREG(sb.st_mode) && strncmp(filename, "\\\\.\\", 4) != 0)
 621                 return 0;
 622
 623         return 1;
 624 }
 625
 626 static void td_fill_rand_seeds_os(struct thread_data *td)
 627 {
 628         os_random_seed(td->rand_seeds[0], &td->bsrange_state);
 629         os_random_seed(td->rand_seeds[1], &td->verify_state);
 630         os_random_seed(td->rand_seeds[2], &td->rwmix_state);
 631
 632         if (td->o.file_service_type == FIO_FSERVICE_RANDOM)
 633                 os_random_seed(td->rand_seeds[3], &td->next_file_state);
 634
 635         os_random_seed(td->rand_seeds[5], &td->file_size_state);
 636         os_random_seed(td->rand_seeds[6], &td->trim_state);
 637
 638         if (!td_random(td))
 639                 return;
 640
 641         if (td->o.rand_repeatable)
 642                 td->rand_seeds[4] = FIO_RANDSEED * td->thread_number;
 643
 644         os_random_seed(td->rand_seeds[4], &td->random_state);
 645 }
 646
 647 static void td_fill_rand_seeds_internal(struct thread_data *td)
 648 {
 649         init_rand_seed(&td->__bsrange_state, td->rand_seeds[0]);
 650         init_rand_seed(&td->__verify_state, td->rand_seeds[1]);
 651         init_rand_seed(&td->__rwmix_state, td->rand_seeds[2]);
 652
 653         if (td->o.file_service_type == FIO_FSERVICE_RANDOM)
 654                 init_rand_seed(&td->__next_file_state, td->rand_seeds[3]);
 655
 656         init_rand_seed(&td->__file_size_state, td->rand_seeds[5]);
 657         init_rand_seed(&td->__trim_state, td->rand_seeds[6]);
 658
 659         if (!td_random(td))
 660                 return;
 661
 662         if (td->o.rand_repeatable)
 663                 td->rand_seeds[4] = FIO_RANDSEED * td->thread_number;
 664
 665         init_rand_seed(&td->__random_state, td->rand_seeds[4]);
 666 }
 667
 668 void td_fill_rand_seeds(struct thread_data *td)
 669 {
 670         if (td->o.use_os_rand)
 671                 td_fill_rand_seeds_os(td);
 672         else
 673                 td_fill_rand_seeds_internal(td);
 674
 675         init_rand_seed(&td->buf_state, td->rand_seeds[7]);
 676 }
 677
 678
 679 /*
 680  * Initializes the ioengine configured for a job, if it has not been done so
 681  * already.
 682  */
 683 int ioengine_load(struct thread_data *td)
 684 {
 685         const char *engine;
 686
 687         /*
 688          * Engine has already been loaded.
 689          */
 690         if (td->io_ops)
 691                 return 0;
 692
 693         engine = get_engine_name(td->o.ioengine);
 694         td->io_ops = load_ioengine(td, engine);
 695         if (!td->io_ops) {
 696                 log_err("fio: failed to load engine %s\n", engine);
 697                 return 1;
 698         }
 699
 700         if (td->io_ops->option_struct_size && td->io_ops->options) {
 701                 /*
 702                  * In cases where td->eo is set, clone it for a child thread.
 703                  * This requires that the parent thread has the same ioengine,
 704                  * but that requirement must be enforced by the code which
 705                  * cloned the thread.
 706                  */
 707                 void *origeo = td->eo;
 708                 /*
 709                  * Otherwise use the default thread options.
 710                  */
 711                 if (!origeo && td != &def_thread && def_thread.eo &&
 712                     def_thread.io_ops->options == td->io_ops->options)
 713                         origeo = def_thread.eo;
 714
 715                 options_init(td->io_ops->options);
 716                 td->eo = malloc(td->io_ops->option_struct_size);
 717                 /*
 718                  * Use the default thread as an option template if this uses the
 719                  * same options structure and there are non-default options
 720                  * used.
 721                  */
 722                 if (origeo) {
 723                         memcpy(td->eo, origeo, td->io_ops->option_struct_size);
 724                         options_mem_dupe(td->eo, td->io_ops->options);
 725                 } else {
 726                         memset(td->eo, 0, td->io_ops->option_struct_size);
 727                         fill_default_options(td->eo, td->io_ops->options);
 728                 }
 729                 *(struct thread_data **)td->eo = td;
 730         }
 731
 732         return 0;
 733 }
 734
 735 /*
 736  * Adds a job to the list of things todo. Sanitizes the various options
 737  * to make sure we don't have conflicts, and initializes various
 738  * members of td.
 739  */
 740 static int add_job(struct thread_data *td, const char *jobname, int job_add_num)
 741 {
 742         const char *ddir_str[] = { NULL, "read", "write", "rw", NULL,
 743                                    "randread", "randwrite", "randrw" };
 744         unsigned int i;
 745         char fname[PATH_MAX];
 746         int numjobs, file_alloced;
 747
 748         /*
 749          * the def_thread is just for options, it's not a real job
 750          */
 751         if (td == &def_thread)
 752                 return 0;
 753
 754         /*
 755          * if we are just dumping the output command line, don't add the job
 756          */
 757         if (dump_cmdline) {
 758                 put_job(td);
 759                 return 0;
 760         }
 761
 762         if (profile_td_init(td))
 763                 goto err;
 764
 765         if (ioengine_load(td))
 766                 goto err;
 767
 768         if (td->o.use_thread)
 769                 nr_thread++;
 770         else
 771                 nr_process++;
 772
 773         if (td->o.odirect)
 774                 td->io_ops->flags |= FIO_RAWIO;
 775
 776         file_alloced = 0;
 777         if (!td->o.filename && !td->files_index && !td->o.read_iolog_file) {
 778                 file_alloced = 1;
 779
 780                 if (td->o.nr_files == 1 && exists_and_not_file(jobname))
 781                         add_file(td, jobname);
 782                 else {
 783                         for (i = 0; i < td->o.nr_files; i++) {
 784                                 sprintf(fname, "%s.%d.%d", jobname,
 785                                                         td->thread_number, i);
 786                                 add_file(td, fname);
 787                         }
 788                 }
 789         }
 790
 791         if (fixup_options(td))
 792                 goto err;
 793
 794         flow_init_job(td);
 795
 796         /*
 797          * IO engines only need this for option callbacks, and the address may
 798          * change in subprocesses.
 799          */
 800         if (td->eo)
 801                 *(struct thread_data **)td->eo = NULL;
 802
 803         if (td->io_ops->flags & FIO_DISKLESSIO) {
 804                 struct fio_file *f;
 805
 806                 for_each_file(td, f, i)
 807                         f->real_file_size = -1ULL;
 808         }
 809
 810         td->mutex = fio_mutex_init(FIO_MUTEX_LOCKED);
 811
 812         td->ts.clat_percentiles = td->o.clat_percentiles;
 813         if (td->o.overwrite_plist)
 814                 memcpy(td->ts.percentile_list, td->o.percentile_list, sizeof(td->o.percentile_list));
 815         else
 816                 memcpy(td->ts.percentile_list, def_percentile_list, sizeof(def_percentile_list));
 817
 818         td->ts.clat_stat[0].min_val = td->ts.clat_stat[1].min_val = ULONG_MAX;
 819         td->ts.slat_stat[0].min_val = td->ts.slat_stat[1].min_val = ULONG_MAX;
 820         td->ts.lat_stat[0].min_val = td->ts.lat_stat[1].min_val = ULONG_MAX;
 821         td->ts.bw_stat[0].min_val = td->ts.bw_stat[1].min_val = ULONG_MAX;
 822         td->ddir_seq_nr = td->o.ddir_seq_nr;
 823
 824         if ((td->o.stonewall || td->o.new_group) && prev_group_jobs) {
 825                 prev_group_jobs = 0;
 826                 groupid++;
 827         }
 828
 829         td->groupid = groupid;
 830         prev_group_jobs++;
 831
 832         if (init_random_state(td, td->rand_seeds, sizeof(td->rand_seeds))) {
 833                 td_verror(td, errno, "init_random_state");
 834                 goto err;
 835         }
 836
 837         if (setup_rate(td))
 838                 goto err;
 839
 840         if (td->o.write_lat_log) {
 841                 setup_log(&td->lat_log, td->o.log_avg_msec);
 842                 setup_log(&td->slat_log, td->o.log_avg_msec);
 843                 setup_log(&td->clat_log, td->o.log_avg_msec);
 844         }
 845         if (td->o.write_bw_log)
 846                 setup_log(&td->bw_log, td->o.log_avg_msec);
 847         if (td->o.write_iops_log)
 848                 setup_log(&td->iops_log, td->o.log_avg_msec);
 849
 850         if (!td->o.name)
 851                 td->o.name = strdup(jobname);
 852
 853         if (!terse_output) {
 854                 if (!job_add_num) {
 855                         if (!strcmp(td->io_ops->name, "cpuio")) {
 856                                 log_info("%s: ioengine=cpu, cpuload=%u,"
 857                                          " cpucycle=%u\n", td->o.name,
 858                                                         td->o.cpuload,
 859                                                         td->o.cpucycle);
 860                         } else {
 861                                 char *c1, *c2, *c3, *c4;
 862
 863                                 c1 = to_kmg(td->o.min_bs[DDIR_READ]);
 864                                 c2 = to_kmg(td->o.max_bs[DDIR_READ]);
 865                                 c3 = to_kmg(td->o.min_bs[DDIR_WRITE]);
 866                                 c4 = to_kmg(td->o.max_bs[DDIR_WRITE]);
 867
 868                                 log_info("%s: (g=%d): rw=%s, bs=%s-%s/%s-%s,"
 869                                          " ioengine=%s, iodepth=%u\n",
 870                                                 td->o.name, td->groupid,
 871                                                 ddir_str[td->o.td_ddir],
 872                                                 c1, c2, c3, c4,
 873                                                 td->io_ops->name,
 874                                                 td->o.iodepth);
 875
 876                                 free(c1);
 877                                 free(c2);
 878                                 free(c3);
 879                                 free(c4);
 880                         }
 881                 } else if (job_add_num == 1)
 882                         log_info("...\n");
 883         }
 884
 885         /*
 886          * recurse add identical jobs, clear numjobs and stonewall options
 887          * as they don't apply to sub-jobs
 888          */
 889         numjobs = td->o.numjobs;
 890         while (--numjobs) {
 891                 struct thread_data *td_new = get_new_job(0, td, 1);
 892
 893                 if (!td_new)
 894                         goto err;
 895
 896                 td_new->o.numjobs = 1;
 897                 td_new->o.stonewall = 0;
 898                 td_new->o.new_group = 0;
 899
 900                 if (file_alloced) {
 901                         td_new->o.filename = NULL;
 902                         td_new->files_index = 0;
 903                         td_new->files_size = 0;
 904                         td_new->files = NULL;
 905                 }
 906
 907                 job_add_num = numjobs - 1;
 908
 909                 if (add_job(td_new, jobname, job_add_num))
 910                         goto err;
 911         }
 912
 913         return 0;
 914 err:
 915         put_job(td);
 916         return -1;
 917 }
 918
 919 /*
 920  * Parse as if 'o' was a command line
 921  */
 922 void add_job_opts(const char **o)
 923 {
 924         struct thread_data *td, *td_parent;
 925         int i, in_global = 1;
 926         char jobname[32];
 927
 928         i = 0;
 929         td_parent = td = NULL;
 930         while (o[i]) {
 931                 if (!strncmp(o[i], "name", 4)) {
 932                         in_global = 0;
 933                         if (td)
 934                                 add_job(td, jobname, 0);
 935                         td = NULL;
 936                         sprintf(jobname, "%s", o[i] + 5);
 937                 }
 938                 if (in_global && !td_parent)
 939                         td_parent = get_new_job(1, &def_thread, 0);
 940                 else if (!in_global && !td) {
 941                         if (!td_parent)
 942                                 td_parent = &def_thread;
 943                         td = get_new_job(0, td_parent, 0);
 944                 }
 945                 if (in_global)
 946                         fio_options_parse(td_parent, (char **) &o[i], 1);
 947                 else
 948                         fio_options_parse(td, (char **) &o[i], 1);
 949                 i++;
 950         }
 951
 952         if (td)
 953                 add_job(td, jobname, 0);
 954 }
 955
 956 static int skip_this_section(const char *name)
 957 {
 958         int i;
 959
 960         if (!nr_job_sections)
 961                 return 0;
 962         if (!strncmp(name, "global", 6))
 963                 return 0;
 964
 965         for (i = 0; i < nr_job_sections; i++)
 966                 if (!strcmp(job_sections[i], name))
 967                         return 0;
 968
 969         return 1;
 970 }
 971
 972 static int is_empty_or_comment(char *line)
 973 {
 974         unsigned int i;
 975
 976         for (i = 0; i < strlen(line); i++) {
 977                 if (line[i] == ';')
 978                         return 1;
 979                 if (line[i] == '#')
 980                         return 1;
 981                 if (!isspace((int) line[i]) && !iscntrl((int) line[i]))
 982                         return 0;
 983         }
 984
 985         return 1;
 986 }
 987
 988 /*
 989  * This is our [ini] type file parser.
 990  */
 991 int parse_jobs_ini(char *file, int is_buf, int stonewall_flag)
 992 {
 993         unsigned int global;
 994         struct thread_data *td;
 995         char *string, *name;
 996         FILE *f;
 997         char *p;
 998         int ret = 0, stonewall;
 999         int first_sect = 1;
1000         int skip_fgets = 0;
1001         int inside_skip = 0;
1002         char **opts;
1003         int i, alloc_opts, num_opts;
1004
1005         if (is_buf)
1006                 f = NULL;
1007         else {
1008                 if (!strcmp(file, "-"))
1009                         f = stdin;
1010                 else
1011                         f = fopen(file, "r");
1012
1013                 if (!f) {
1014                         perror("fopen job file");
1015                         return 1;
1016                 }
1017         }
1018
1019         string = malloc(4096);
1020
1021         /*
1022          * it's really 256 + small bit, 280 should suffice
1023          */
1024         name = malloc(280);
1025         memset(name, 0, 280);
1026
1027         alloc_opts = 8;
1028         opts = malloc(sizeof(char *) * alloc_opts);
1029         num_opts = 0;
1030
1031         stonewall = stonewall_flag;
1032         do {
1033                 /*
1034                  * if skip_fgets is set, we already have loaded a line we
1035                  * haven't handled.
1036                  */
1037                 if (!skip_fgets) {
1038                         if (is_buf)
1039                                 p = strsep(&file, "\n");
1040                         else
1041                                 p = fgets(string, 4096, f);
1042                         if (!p)
1043                                 break;
1044                 }
1045
1046                 skip_fgets = 0;
1047                 strip_blank_front(&p);
1048                 strip_blank_end(p);
1049
1050                 if (is_empty_or_comment(p))
1051                         continue;
1052                 if (sscanf(p, "[%255[^\n]]", name) != 1) {
1053                         if (inside_skip)
1054                                 continue;
1055                         log_err("fio: option <%s> outside of [] job section\n",
1056                                                                         p);
1057                         break;
1058                 }
1059
1060                 name[strlen(name) - 1] = '\0';
1061
1062                 if (skip_this_section(name)) {
1063                         inside_skip = 1;
1064                         continue;
1065                 } else
1066                         inside_skip = 0;
1067
1068                 global = !strncmp(name, "global", 6);
1069
1070                 if (dump_cmdline) {
1071                         if (first_sect)
1072                                 log_info("fio ");
1073                         if (!global)
1074                                 log_info("--name=%s ", name);
1075                         first_sect = 0;
1076                 }
1077
1078                 td = get_new_job(global, &def_thread, 0);
1079                 if (!td) {
1080                         ret = 1;
1081                         break;
1082                 }
1083
1084                 /*
1085                  * Seperate multiple job files by a stonewall
1086                  */
1087                 if (!global && stonewall) {
1088                         td->o.stonewall = stonewall;
1089                         stonewall = 0;
1090                 }
1091
1092                 num_opts = 0;
1093                 memset(opts, 0, alloc_opts * sizeof(char *));
1094
1095                 while (1) {
1096                         if (is_buf)
1097                                 p = strsep(&file, "\n");
1098                         else
1099                                 p = fgets(string, 4096, f);
1100                         if (!p)
1101                                 break;
1102
1103                         if (is_empty_or_comment(p))
1104                                 continue;
1105
1106                         strip_blank_front(&p);
1107
1108                         /*
1109                          * new section, break out and make sure we don't
1110                          * fgets() a new line at the top.
1111                          */
1112                         if (p[0] == '[') {
1113                                 skip_fgets = 1;
1114                                 break;
1115                         }
1116
1117                         strip_blank_end(p);
1118
1119                         if (num_opts == alloc_opts) {
1120                                 alloc_opts <<= 1;
1121                                 opts = realloc(opts,
1122                                                 alloc_opts * sizeof(char *));
1123                         }
1124
1125                         opts[num_opts] = strdup(p);
1126                         num_opts++;
1127                 }
1128
1129                 ret = fio_options_parse(td, opts, num_opts);
1130                 if (!ret) {
1131                         if (dump_cmdline)
1132                                 for (i = 0; i < num_opts; i++)
1133                                         log_info("--%s ", opts[i]);
1134
1135                         ret = add_job(td, name, 0);
1136                 } else {
1137                         log_err("fio: job %s dropped\n", name);
1138                         put_job(td);
1139                 }
1140
1141                 for (i = 0; i < num_opts; i++)
1142                         free(opts[i]);
1143                 num_opts = 0;
1144         } while (!ret);
1145
1146         if (dump_cmdline)
1147                 log_info("\n");
1148
1149         i = 0;
1150         while (i < nr_job_sections) {
1151                 free(job_sections[i]);
1152                 i++;
1153         }
1154
1155         for (i = 0; i < num_opts; i++)
1156                 free(opts[i]);
1157
1158         free(string);
1159         free(name);
1160         free(opts);
1161         if (!is_buf && f != stdin)
1162                 fclose(f);
1163         return ret;
1164 }
1165
1166 static int fill_def_thread(void)
1167 {
1168         memset(&def_thread, 0, sizeof(def_thread));
1169
1170         fio_getaffinity(getpid(), &def_thread.o.cpumask);
1171         def_thread.o.timeout = def_timeout;
1172
1173         /*
1174          * fill default options
1175          */
1176         fio_fill_default_options(&def_thread);
1177         return 0;
1178 }
1179
1180 static void usage(const char *name)
1181 {
1182         printf("%s\n", fio_version_string);
1183         printf("%s [options] [job options] <job file(s)>\n", name);
1184         printf("  --debug=options\tEnable debug logging. May be one/more of:\n"
1185                 "\t\t\tprocess,file,io,mem,blktrace,verify,random,parse,\n"
1186                 "\t\t\tdiskutil,job,mutex,profile,time,net\n");
1187         printf("  --output\t\tWrite output to file\n");
1188         printf("  --timeout\t\tRuntime in seconds\n");
1189         printf("  --latency-log\t\tGenerate per-job latency logs\n");
1190         printf("  --bandwidth-log\tGenerate per-job bandwidth logs\n");
1191         printf("  --minimal\t\tMinimal (terse) output\n");
1192         printf("  --version\t\tPrint version info and exit\n");
1193         printf("  --terse-version=x\tSet terse version output format to 'x'\n");
1194         printf("  --help\t\tPrint this page\n");
1195         printf("  --cmdhelp=cmd\t\tPrint command help, \"all\" for all of"
1196                 " them\n");
1197         printf("  --enghelp=engine\tPrint ioengine help, or list"
1198                 " available ioengines\n");
1199         printf("  --enghelp=engine,cmd\tPrint help for an ioengine"
1200                 " cmd\n");
1201         printf("  --showcmd\t\tTurn a job file into command line options\n");
1202         printf("  --eta=when\t\tWhen ETA estimate should be printed\n");
1203         printf("            \t\tMay be \"always\", \"never\" or \"auto\"\n");
1204         printf("  --readonly\t\tTurn on safety read-only checks, preventing"
1205                 " writes\n");
1206         printf("  --section=name\tOnly run specified section in job file\n");
1207         printf("  --alloc-size=kb\tSet smalloc pool to this size in kb"
1208                 " (def 1024)\n");
1209         printf("  --warnings-fatal\tFio parser warnings are fatal\n");
1210         printf("  --max-jobs=nr\t\tMaximum number of threads/processes to support\n");
1211         printf("  --server=args\t\tStart a backend fio server\n");
1212         printf("  --daemonize=pidfile\tBackground fio server, write pid to file\n");
1213         printf("  --client=hostname\tTalk to remote backend fio server at hostname\n");
1214         printf("\nFio was written by Jens Axboe <jens.axboe@oracle.com>");
1215         printf("\n                 Jens Axboe <jaxboe@fusionio.com>\n");
1216 }
1217
1218 #ifdef FIO_INC_DEBUG
1219 struct debug_level debug_levels[] = {
1220         { .name = "process",    .shift = FD_PROCESS, },
1221         { .name = "file",       .shift = FD_FILE, },
1222         { .name = "io",         .shift = FD_IO, },
1223         { .name = "mem",        .shift = FD_MEM, },
1224         { .name = "blktrace",   .shift = FD_BLKTRACE },
1225         { .name = "verify",     .shift = FD_VERIFY },
1226         { .name = "random",     .shift = FD_RANDOM },
1227         { .name = "parse",      .shift = FD_PARSE },
1228         { .name = "diskutil",   .shift = FD_DISKUTIL },
1229         { .name = "job",        .shift = FD_JOB },
1230         { .name = "mutex",      .shift = FD_MUTEX },
1231         { .name = "profile",    .shift = FD_PROFILE },
1232         { .name = "time",       .shift = FD_TIME },
1233         { .name = "net",        .shift = FD_NET },
1234         { .name = NULL, },
1235 };
1236
1237 static int set_debug(const char *string)
1238 {
1239         struct debug_level *dl;
1240         char *p = (char *) string;
1241         char *opt;
1242         int i;
1243
1244         if (!strcmp(string, "?") || !strcmp(string, "help")) {
1245                 log_info("fio: dumping debug options:");
1246                 for (i = 0; debug_levels[i].name; i++) {
1247                         dl = &debug_levels[i];
1248                         log_info("%s,", dl->name);
1249                 }
1250                 log_info("all\n");
1251                 return 1;
1252         }
1253
1254         while ((opt = strsep(&p, ",")) != NULL) {
1255                 int found = 0;
1256
1257                 if (!strncmp(opt, "all", 3)) {
1258                         log_info("fio: set all debug options\n");
1259                         fio_debug = ~0UL;
1260                         continue;
1261                 }
1262
1263                 for (i = 0; debug_levels[i].name; i++) {
1264                         dl = &debug_levels[i];
1265                         found = !strncmp(opt, dl->name, strlen(dl->name));
1266                         if (!found)
1267                                 continue;
1268
1269                         if (dl->shift == FD_JOB) {
1270                                 opt = strchr(opt, ':');
1271                                 if (!opt) {
1272                                         log_err("fio: missing job number\n");
1273                                         break;
1274                                 }
1275                                 opt++;
1276                                 fio_debug_jobno = atoi(opt);
1277                                 log_info("fio: set debug jobno %d\n",
1278                                                         fio_debug_jobno);
1279                         } else {
1280                                 log_info("fio: set debug option %s\n", opt);
1281                                 fio_debug |= (1UL << dl->shift);
1282                         }
1283                         break;
1284                 }
1285
1286                 if (!found)
1287                         log_err("fio: debug mask %s not found\n", opt);
1288         }
1289         return 0;
1290 }
1291 #else
1292 static int set_debug(const char *string)
1293 {
1294         log_err("fio: debug tracing not included in build\n");
1295         return 1;
1296 }
1297 #endif
1298
1299 static void fio_options_fill_optstring(void)
1300 {
1301         char *ostr = cmd_optstr;
1302         int i, c;
1303
1304         c = i = 0;
1305         while (l_opts[i].name) {
1306                 ostr[c++] = l_opts[i].val;
1307                 if (l_opts[i].has_arg == required_argument)
1308                         ostr[c++] = ':';
1309                 else if (l_opts[i].has_arg == optional_argument) {
1310                         ostr[c++] = ':';
1311                         ostr[c++] = ':';
1312                 }
1313                 i++;
1314         }
1315         ostr[c] = '\0';
1316 }
1317
1318 static int client_flag_set(char c)
1319 {
1320         int i;
1321
1322         i = 0;
1323         while (l_opts[i].name) {
1324                 int val = l_opts[i].val;
1325
1326                 if (c == (val & 0xff))
1327                         return (val & FIO_CLIENT_FLAG);
1328
1329                 i++;
1330         }
1331
1332         return 0;
1333 }
1334
1335 void parse_cmd_client(void *client, char *opt)
1336 {
1337         fio_client_add_cmd_option(client, opt);
1338 }
1339
1340 int parse_cmd_line(int argc, char *argv[])
1341 {
1342         struct thread_data *td = NULL;
1343         int c, ini_idx = 0, lidx, ret = 0, do_exit = 0, exit_val = 0;
1344         char *ostr = cmd_optstr;
1345         void *pid_file = NULL;
1346         void *cur_client = NULL;
1347         int backend = 0;
1348
1349         /*
1350          * Reset optind handling, since we may call this multiple times
1351          * for the backend.
1352          */
1353         optind = 1;
1354
1355         while ((c = getopt_long_only(argc, argv, ostr, l_opts, &lidx)) != -1) {
1356                 did_arg = 1;
1357
1358                 if ((c & FIO_CLIENT_FLAG) || client_flag_set(c)) {
1359                         parse_cmd_client(cur_client, argv[optind - 1]);
1360                         c &= ~FIO_CLIENT_FLAG;
1361                 }
1362
1363                 switch (c) {
1364                 case 'a':
1365                         smalloc_pool_size = atoi(optarg);
1366                         break;
1367                 case 't':
1368                         def_timeout = atoi(optarg);
1369                         break;
1370                 case 'l':
1371                         write_lat_log = 1;
1372                         break;
1373                 case 'b':
1374                         write_bw_log = 1;
1375                         break;
1376                 case 'o':
1377                         f_out = fopen(optarg, "w+");
1378                         if (!f_out) {
1379                                 perror("fopen output");
1380                                 exit(1);
1381                         }
1382                         f_err = f_out;
1383                         break;
1384                 case 'm':
1385                         terse_output = 1;
1386                         break;
1387                 case 'h':
1388                         if (!cur_client) {
1389                                 usage(argv[0]);
1390                                 do_exit++;
1391                         }
1392                         break;
1393                 case 'c':
1394                         if (!cur_client) {
1395                                 fio_show_option_help(optarg);
1396                                 do_exit++;
1397                         }
1398                         break;
1399                 case 'i':
1400                         if (!cur_client) {
1401                                 fio_show_ioengine_help(optarg);
1402                                 do_exit++;
1403                         }
1404                         break;
1405                 case 's':
1406                         dump_cmdline = 1;
1407                         break;
1408                 case 'r':
1409                         read_only = 1;
1410                         break;
1411                 case 'v':
1412                         if (!cur_client) {
1413                                 log_info("%s\n", fio_version_string);
1414                                 do_exit++;
1415                         }
1416                         break;
1417                 case 'V':
1418                         terse_version = atoi(optarg);
1419                         if (!(terse_version == 2 || terse_version == 3)) {
1420                                 log_err("fio: bad terse version format\n");
1421                                 exit_val = 1;
1422                                 do_exit++;
1423                         }
1424                         break;
1425                 case 'e':
1426                         if (!strcmp("always", optarg))
1427                                 eta_print = FIO_ETA_ALWAYS;
1428                         else if (!strcmp("never", optarg))
1429                                 eta_print = FIO_ETA_NEVER;
1430                         break;
1431                 case 'd':
1432                         if (set_debug(optarg))
1433                                 do_exit++;
1434                         break;
1435                 case 'x': {
1436                         size_t new_size;
1437
1438                         if (!strcmp(optarg, "global")) {
1439                                 log_err("fio: can't use global as only "
1440                                         "section\n");
1441                                 do_exit++;
1442                                 exit_val = 1;
1443                                 break;
1444                         }
1445                         new_size = (nr_job_sections + 1) * sizeof(char *);
1446                         job_sections = realloc(job_sections, new_size);
1447                         job_sections[nr_job_sections] = strdup(optarg);
1448                         nr_job_sections++;
1449                         break;
1450                         }
1451                 case 'p':
1452                         exec_profile = strdup(optarg);
1453                         break;
1454                 case FIO_GETOPT_JOB: {
1455                         const char *opt = l_opts[lidx].name;
1456                         char *val = optarg;
1457
1458                         if (!strncmp(opt, "name", 4) && td) {
1459                                 ret = add_job(td, td->o.name ?: "fio", 0);
1460                                 if (ret)
1461                                         return 0;
1462                                 td = NULL;
1463                         }
1464                         if (!td) {
1465                                 int is_section = !strncmp(opt, "name", 4);
1466                                 int global = 0;
1467
1468                                 if (!is_section || !strncmp(val, "global", 6))
1469                                         global = 1;
1470
1471                                 if (is_section && skip_this_section(val))
1472                                         continue;
1473
1474                                 td = get_new_job(global, &def_thread, 1);
1475                                 if (!td || ioengine_load(td))
1476                                         return 0;
1477                                 fio_options_set_ioengine_opts(l_opts, td);
1478                         }
1479
1480                         ret = fio_cmd_option_parse(td, opt, val);
1481
1482                         if (!ret && !strcmp(opt, "ioengine")) {
1483                                 free_ioengine(td);
1484                                 if (ioengine_load(td))
1485                                         return 0;
1486                                 fio_options_set_ioengine_opts(l_opts, td);
1487                         }
1488                         break;
1489                 }
1490                 case FIO_GETOPT_IOENGINE: {
1491                         const char *opt = l_opts[lidx].name;
1492                         char *val = optarg;
1493                         opt = l_opts[lidx].name;
1494                         val = optarg;
1495                         ret = fio_cmd_ioengine_option_parse(td, opt, val);
1496                         break;
1497                 }
1498                 case 'w':
1499                         warnings_fatal = 1;
1500                         break;
1501                 case 'j':
1502                         max_jobs = atoi(optarg);
1503                         if (!max_jobs || max_jobs > REAL_MAX_JOBS) {
1504                                 log_err("fio: invalid max jobs: %d\n", max_jobs);
1505                                 do_exit++;
1506                                 exit_val = 1;
1507                         }
1508                         break;
1509                 case 'S':
1510                         if (nr_clients) {
1511                                 log_err("fio: can't be both client and server\n");
1512                                 do_exit++;
1513                                 exit_val = 1;
1514                                 break;
1515                         }
1516                         if (optarg)
1517                                 fio_server_set_arg(optarg);
1518                         is_backend = 1;
1519                         backend = 1;
1520                         break;
1521                 case 'D':
1522                         pid_file = strdup(optarg);
1523                         break;
1524                 case 'C':
1525                         if (is_backend) {
1526                                 log_err("fio: can't be both client and server\n");
1527                                 do_exit++;
1528                                 exit_val = 1;
1529                                 break;
1530                         }
1531                         if (fio_client_add(optarg, &cur_client)) {
1532                                 log_err("fio: failed adding client %s\n", optarg);
1533                                 do_exit++;
1534                                 exit_val = 1;
1535                                 break;
1536                         }
1537                         /*
1538                          * If the next argument exists and isn't an option,
1539                          * assume it's a job file for this client only.
1540                          */
1541                         while (optind < argc) {
1542                                 if (!strncmp(argv[optind], "--", 2) ||
1543                                     !strncmp(argv[optind], "-", 1))
1544                                         break;
1545
1546                                 fio_client_add_ini_file(cur_client, argv[optind]);
1547                                 optind++;
1548                         }
1549                         break;
1550                 default:
1551                         do_exit++;
1552                         exit_val = 1;
1553                         break;
1554                 }
1555                 if (do_exit)
1556                         break;
1557         }
1558
1559         if (do_exit) {
1560                 if (exit_val && !(is_backend || nr_clients))
1561                         exit(exit_val);
1562         }
1563
1564         if (nr_clients && fio_clients_connect()) {
1565                 do_exit++;
1566                 exit_val = 1;
1567                 return -1;
1568         }
1569
1570         if (is_backend && backend)
1571                 return fio_start_server(pid_file);
1572
1573         if (td) {
1574                 if (!ret)
1575                         ret = add_job(td, td->o.name ?: "fio", 0);
1576         }
1577
1578         while (!ret && optind < argc) {
1579                 ini_idx++;
1580                 ini_file = realloc(ini_file, ini_idx * sizeof(char *));
1581                 ini_file[ini_idx - 1] = strdup(argv[optind]);
1582                 optind++;
1583         }
1584
1585         return ini_idx;
1586 }
1587
1588 int parse_options(int argc, char *argv[])
1589 {
1590         int job_files, i;
1591
1592         f_out = stdout;
1593         f_err = stderr;
1594
1595         fio_options_fill_optstring();
1596         fio_options_dup_and_init(l_opts);
1597
1598         atexit(free_shm);
1599
1600         if (fill_def_thread())
1601                 return 1;
1602
1603         job_files = parse_cmd_line(argc, argv);
1604
1605         if (job_files > 0) {
1606                 for (i = 0; i < job_files; i++) {
1607                         if (fill_def_thread())
1608                                 return 1;
1609                         if (nr_clients) {
1610                                 if (fio_clients_send_ini(ini_file[i]))
1611                                         return 1;
1612                                 free(ini_file[i]);
1613                         } else if (!is_backend) {
1614                                 if (parse_jobs_ini(ini_file[i], 0, i))
1615                                         return 1;
1616                                 free(ini_file[i]);
1617                         }
1618                 }
1619         } else if (nr_clients) {
1620                 if (fill_def_thread())
1621                         return 1;
1622                 if (fio_clients_send_ini(NULL))
1623                         return 1;
1624         }
1625
1626         free(ini_file);
1627         fio_options_free(&def_thread);
1628
1629         if (!thread_number) {
1630                 if (dump_cmdline)
1631                         return 0;
1632                 if (exec_profile)
1633                         return 0;
1634                 if (is_backend || nr_clients)
1635                         return 0;
1636                 if (did_arg)
1637                         return 0;
1638
1639                 log_err("No jobs(s) defined\n\n");
1640
1641                 if (!did_arg) {
1642                         usage(argv[0]);
1643                         return 1;
1644                 }
1645
1646                 return 0;
1647         }
1648
1649         if (def_thread.o.gtod_offload) {
1650                 fio_gtod_init();
1651                 fio_gtod_offload = 1;
1652                 fio_gtod_cpu = def_thread.o.gtod_cpu;
1653         }
1654
1655         if (!terse_output)
1656                 log_info("%s\n", fio_version_string);
1657
1658         return 0;
1659 }