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 #include "fio_version.h"
  27
  28 #if FIO_PATCH > 0
  29 const char fio_version_string[] =       __fio_stringify(FIO_MAJOR) "."  \
  30                                         __fio_stringify(FIO_MINOR) "."  \
  31                                         __fio_stringify(FIO_PATCH);
  32 #else
  33 const char fio_version_string[] =       __fio_stringify(FIO_MAJOR) "."  \
  34                                         __fio_stringify(FIO_MINOR);
  35 #endif
  36
  37 #define FIO_RANDSEED            (0xb1899bedUL)
  38
  39 static char **ini_file;
  40 static int max_jobs = FIO_MAX_JOBS;
  41 static int dump_cmdline;
  42 static int def_timeout;
  43
  44 static struct thread_data def_thread;
  45 struct thread_data *threads = NULL;
  46
  47 int exitall_on_terminate = 0;
  48 int terse_output = 0;
  49 int eta_print;
  50 unsigned long long mlock_size = 0;
  51 FILE *f_out = NULL;
  52 FILE *f_err = NULL;
  53 char **job_sections = NULL;
  54 int nr_job_sections = 0;
  55 char *exec_profile = NULL;
  56 int warnings_fatal = 0;
  57 int terse_version = 3;
  58 int is_backend = 0;
  59 int nr_clients = 0;
  60 int log_syslog = 0;
  61
  62 int write_bw_log = 0;
  63 int read_only = 0;
  64
  65 static int write_lat_log;
  66
  67 static int prev_group_jobs;
  68
  69 unsigned long fio_debug = 0;
  70 unsigned int fio_debug_jobno = -1;
  71 unsigned int *fio_debug_jobp = NULL;
  72
  73 static char cmd_optstr[256];
  74 static int did_arg;
  75
  76 const fio_fp64_t def_percentile_list[FIO_IO_U_LIST_MAX_LEN] = {
  77         { .u.f  =  1.0 },
  78         { .u.f  =  5.0 },
  79         { .u.f  = 10.0 },
  80         { .u.f  = 20.0 },
  81         { .u.f  = 30.0 },
  82         { .u.f  = 40.0 },
  83         { .u.f  = 50.0 },
  84         { .u.f  = 60.0 },
  85         { .u.f  = 70.0 },
  86         { .u.f  = 80.0 },
  87         { .u.f  = 90.0 },
  88         { .u.f  = 95.0 },
  89         { .u.f  = 99.0 },
  90         { .u.f  = 99.5 },
  91         { .u.f  = 99.9 },
  92 };
  93
  94 #define FIO_CLIENT_FLAG         (1 << 16)
  95
  96 /*
  97  * Command line options. These will contain the above, plus a few
  98  * extra that only pertain to fio itself and not jobs.
  99  */
 100 static struct option l_opts[FIO_NR_OPTIONS] = {
 101         {
 102                 .name           = (char *) "output",
 103                 .has_arg        = required_argument,
 104                 .val            = 'o' | FIO_CLIENT_FLAG,
 105         },
 106         {
 107                 .name           = (char *) "timeout",
 108                 .has_arg        = required_argument,
 109                 .val            = 't' | FIO_CLIENT_FLAG,
 110         },
 111         {
 112                 .name           = (char *) "latency-log",
 113                 .has_arg        = required_argument,
 114                 .val            = 'l' | FIO_CLIENT_FLAG,
 115         },
 116         {
 117                 .name           = (char *) "bandwidth-log",
 118                 .has_arg        = required_argument,
 119                 .val            = 'b' | FIO_CLIENT_FLAG,
 120         },
 121         {
 122                 .name           = (char *) "minimal",
 123                 .has_arg        = optional_argument,
 124                 .val            = 'm' | FIO_CLIENT_FLAG,
 125         },
 126         {
 127                 .name           = (char *) "version",
 128                 .has_arg        = no_argument,
 129                 .val            = 'v' | FIO_CLIENT_FLAG,
 130         },
 131         {
 132                 .name           = (char *) "help",
 133                 .has_arg        = no_argument,
 134                 .val            = 'h' | FIO_CLIENT_FLAG,
 135         },
 136         {
 137                 .name           = (char *) "cmdhelp",
 138                 .has_arg        = optional_argument,
 139                 .val            = 'c' | FIO_CLIENT_FLAG,
 140         },
 141         {
 142                 .name              = (char *) "enghelp",
 143                 .has_arg        = optional_argument,
 144                 .val                = 'i' | FIO_CLIENT_FLAG,
 145         },
 146         {
 147                 .name           = (char *) "showcmd",
 148                 .has_arg        = no_argument,
 149                 .val            = 's' | FIO_CLIENT_FLAG,
 150         },
 151         {
 152                 .name           = (char *) "readonly",
 153                 .has_arg        = no_argument,
 154                 .val            = 'r' | FIO_CLIENT_FLAG,
 155         },
 156         {
 157                 .name           = (char *) "eta",
 158                 .has_arg        = required_argument,
 159                 .val            = 'e' | FIO_CLIENT_FLAG,
 160         },
 161         {
 162                 .name           = (char *) "debug",
 163                 .has_arg        = required_argument,
 164                 .val            = 'd' | FIO_CLIENT_FLAG,
 165         },
 166         {
 167                 .name           = (char *) "section",
 168                 .has_arg        = required_argument,
 169                 .val            = 'x' | FIO_CLIENT_FLAG,
 170         },
 171         {
 172                 .name           = (char *) "alloc-size",
 173                 .has_arg        = required_argument,
 174                 .val            = 'a' | FIO_CLIENT_FLAG,
 175         },
 176         {
 177                 .name           = (char *) "profile",
 178                 .has_arg        = required_argument,
 179                 .val            = 'p' | FIO_CLIENT_FLAG,
 180         },
 181         {
 182                 .name           = (char *) "warnings-fatal",
 183                 .has_arg        = no_argument,
 184                 .val            = 'w' | FIO_CLIENT_FLAG,
 185         },
 186         {
 187                 .name           = (char *) "max-jobs",
 188                 .has_arg        = required_argument,
 189                 .val            = 'j' | FIO_CLIENT_FLAG,
 190         },
 191         {
 192                 .name           = (char *) "terse-version",
 193                 .has_arg        = required_argument,
 194                 .val            = 'V' | FIO_CLIENT_FLAG,
 195         },
 196         {
 197                 .name           = (char *) "server",
 198                 .has_arg        = optional_argument,
 199                 .val            = 'S',
 200         },
 201         {       .name           = (char *) "daemonize",
 202                 .has_arg        = required_argument,
 203                 .val            = 'D',
 204         },
 205         {
 206                 .name           = (char *) "client",
 207                 .has_arg        = required_argument,
 208                 .val            = 'C',
 209         },
 210         {
 211                 .name           = NULL,
 212         },
 213 };
 214
 215 static void free_shm(void)
 216 {
 217         struct shmid_ds sbuf;
 218
 219         if (threads) {
 220                 void *tp = threads;
 221
 222                 threads = NULL;
 223                 file_hash_exit();
 224                 flow_exit();
 225                 fio_debug_jobp = NULL;
 226                 shmdt(tp);
 227                 shmctl(shm_id, IPC_RMID, &sbuf);
 228         }
 229
 230         scleanup();
 231 }
 232
 233 /*
 234  * The thread area is shared between the main process and the job
 235  * threads/processes. So setup a shared memory segment that will hold
 236  * all the job info. We use the end of the region for keeping track of
 237  * open files across jobs, for file sharing.
 238  */
 239 static int setup_thread_area(void)
 240 {
 241         void *hash;
 242
 243         if (threads)
 244                 return 0;
 245
 246         /*
 247          * 1024 is too much on some machines, scale max_jobs if
 248          * we get a failure that looks like too large a shm segment
 249          */
 250         do {
 251                 size_t size = max_jobs * sizeof(struct thread_data);
 252
 253                 size += file_hash_size;
 254                 size += sizeof(unsigned int);
 255
 256                 shm_id = shmget(0, size, IPC_CREAT | 0600);
 257                 if (shm_id != -1)
 258                         break;
 259                 if (errno != EINVAL && errno != ENOMEM) {
 260                         perror("shmget");
 261                         break;
 262                 }
 263
 264                 max_jobs >>= 1;
 265         } while (max_jobs);
 266
 267         if (shm_id == -1)
 268                 return 1;
 269
 270         threads = shmat(shm_id, NULL, 0);
 271         if (threads == (void *) -1) {
 272                 perror("shmat");
 273                 return 1;
 274         }
 275
 276         memset(threads, 0, max_jobs * sizeof(struct thread_data));
 277         hash = (void *) threads + max_jobs * sizeof(struct thread_data);
 278         fio_debug_jobp = (void *) hash + file_hash_size;
 279         *fio_debug_jobp = -1;
 280         file_hash_init(hash);
 281
 282         flow_init();
 283
 284         return 0;
 285 }
 286
 287 /*
 288  * Return a free job structure.
 289  */
 290 static struct thread_data *get_new_job(int global, struct thread_data *parent,
 291                                        int preserve_eo)
 292 {
 293         struct thread_data *td;
 294
 295         if (global)
 296                 return &def_thread;
 297         if (setup_thread_area()) {
 298                 log_err("error: failed to setup shm segment\n");
 299                 return NULL;
 300         }
 301         if (thread_number >= max_jobs) {
 302                 log_err("error: maximum number of jobs (%d) reached.\n",
 303                                 max_jobs);
 304                 return NULL;
 305         }
 306
 307         td = &threads[thread_number++];
 308         *td = *parent;
 309
 310         td->io_ops = NULL;
 311         if (!preserve_eo)
 312                 td->eo = NULL;
 313
 314         td->o.uid = td->o.gid = -1U;
 315
 316         dup_files(td, parent);
 317         fio_options_mem_dupe(td);
 318
 319         profile_add_hooks(td);
 320
 321         td->thread_number = thread_number;
 322         return td;
 323 }
 324
 325 static void put_job(struct thread_data *td)
 326 {
 327         if (td == &def_thread)
 328                 return;
 329
 330         profile_td_exit(td);
 331         flow_exit_job(td);
 332
 333         if (td->error)
 334                 log_info("fio: %s\n", td->verror);
 335
 336         fio_options_free(td);
 337         if (td->io_ops)
 338                 free_ioengine(td);
 339
 340         memset(&threads[td->thread_number - 1], 0, sizeof(*td));
 341         thread_number--;
 342 }
 343
 344 static int __setup_rate(struct thread_data *td, enum fio_ddir ddir)
 345 {
 346         unsigned int bs = td->o.min_bs[ddir];
 347
 348         assert(ddir_rw(ddir));
 349
 350         if (td->o.rate[ddir])
 351                 td->rate_bps[ddir] = td->o.rate[ddir];
 352         else
 353                 td->rate_bps[ddir] = td->o.rate_iops[ddir] * bs;
 354
 355         if (!td->rate_bps[ddir]) {
 356                 log_err("rate lower than supported\n");
 357                 return -1;
 358         }
 359
 360         td->rate_pending_usleep[ddir] = 0;
 361         return 0;
 362 }
 363
 364 static int setup_rate(struct thread_data *td)
 365 {
 366         int ret = 0;
 367
 368         if (td->o.rate[DDIR_READ] || td->o.rate_iops[DDIR_READ])
 369                 ret = __setup_rate(td, DDIR_READ);
 370         if (td->o.rate[DDIR_WRITE] || td->o.rate_iops[DDIR_WRITE])
 371                 ret |= __setup_rate(td, DDIR_WRITE);
 372
 373         return ret;
 374 }
 375
 376 static int fixed_block_size(struct thread_options *o)
 377 {
 378         return o->min_bs[DDIR_READ] == o->max_bs[DDIR_READ] &&
 379                 o->min_bs[DDIR_WRITE] == o->max_bs[DDIR_WRITE] &&
 380                 o->min_bs[DDIR_READ] == o->min_bs[DDIR_WRITE];
 381 }
 382
 383 /*
 384  * Lazy way of fixing up options that depend on each other. We could also
 385  * define option callback handlers, but this is easier.
 386  */
 387 static int fixup_options(struct thread_data *td)
 388 {
 389         struct thread_options *o = &td->o;
 390         int ret = 0;
 391
 392 #ifndef FIO_HAVE_PSHARED_MUTEX
 393         if (!o->use_thread) {
 394                 log_info("fio: this platform does not support process shared"
 395                          " mutexes, forcing use of threads. Use the 'thread'"
 396                          " option to get rid of this warning.\n");
 397                 o->use_thread = 1;
 398                 ret = warnings_fatal;
 399         }
 400 #endif
 401
 402         if (o->write_iolog_file && o->read_iolog_file) {
 403                 log_err("fio: read iolog overrides write_iolog\n");
 404                 free(o->write_iolog_file);
 405                 o->write_iolog_file = NULL;
 406                 ret = warnings_fatal;
 407         }
 408
 409         /*
 410          * only really works with 1 file
 411          */
 412         if (o->zone_size && o->open_files == 1)
 413                 o->zone_size = 0;
 414
 415         /*
 416          * If zone_range isn't specified, backward compatibility dictates it
 417          * should be made equal to zone_size.
 418          */
 419         if (o->zone_size && !o->zone_range)
 420                 o->zone_range = o->zone_size;
 421
 422         /*
 423          * Reads can do overwrites, we always need to pre-create the file
 424          */
 425         if (td_read(td) || td_rw(td))
 426                 o->overwrite = 1;
 427
 428         if (!o->min_bs[DDIR_READ])
 429                 o->min_bs[DDIR_READ] = o->bs[DDIR_READ];
 430         if (!o->max_bs[DDIR_READ])
 431                 o->max_bs[DDIR_READ] = o->bs[DDIR_READ];
 432         if (!o->min_bs[DDIR_WRITE])
 433                 o->min_bs[DDIR_WRITE] = o->bs[DDIR_WRITE];
 434         if (!o->max_bs[DDIR_WRITE])
 435                 o->max_bs[DDIR_WRITE] = o->bs[DDIR_WRITE];
 436
 437         o->rw_min_bs = min(o->min_bs[DDIR_READ], o->min_bs[DDIR_WRITE]);
 438
 439         /*
 440          * For random IO, allow blockalign offset other than min_bs.
 441          */
 442         if (!o->ba[DDIR_READ] || !td_random(td))
 443                 o->ba[DDIR_READ] = o->min_bs[DDIR_READ];
 444         if (!o->ba[DDIR_WRITE] || !td_random(td))
 445                 o->ba[DDIR_WRITE] = o->min_bs[DDIR_WRITE];
 446
 447         if ((o->ba[DDIR_READ] != o->min_bs[DDIR_READ] ||
 448             o->ba[DDIR_WRITE] != o->min_bs[DDIR_WRITE]) &&
 449             !o->norandommap) {
 450                 log_err("fio: Any use of blockalign= turns off randommap\n");
 451                 o->norandommap = 1;
 452                 ret = warnings_fatal;
 453         }
 454
 455         if (!o->file_size_high)
 456                 o->file_size_high = o->file_size_low;
 457
 458         if (o->norandommap && o->verify != VERIFY_NONE
 459             && !fixed_block_size(o))  {
 460                 log_err("fio: norandommap given for variable block sizes, "
 461                         "verify disabled\n");
 462                 o->verify = VERIFY_NONE;
 463                 ret = warnings_fatal;
 464         }
 465         if (o->bs_unaligned && (o->odirect || td->io_ops->flags & FIO_RAWIO))
 466                 log_err("fio: bs_unaligned may not work with raw io\n");
 467
 468         /*
 469          * thinktime_spin must be less than thinktime
 470          */
 471         if (o->thinktime_spin > o->thinktime)
 472                 o->thinktime_spin = o->thinktime;
 473
 474         /*
 475          * The low water mark cannot be bigger than the iodepth
 476          */
 477         if (o->iodepth_low > o->iodepth || !o->iodepth_low) {
 478                 /*
 479                  * syslet work around - if the workload is sequential,
 480                  * we want to let the queue drain all the way down to
 481                  * avoid seeking between async threads
 482                  */
 483                 if (!strcmp(td->io_ops->name, "syslet-rw") && !td_random(td))
 484                         o->iodepth_low = 1;
 485                 else
 486                         o->iodepth_low = o->iodepth;
 487         }
 488
 489         /*
 490          * If batch number isn't set, default to the same as iodepth
 491          */
 492         if (o->iodepth_batch > o->iodepth || !o->iodepth_batch)
 493                 o->iodepth_batch = o->iodepth;
 494
 495         if (o->nr_files > td->files_index)
 496                 o->nr_files = td->files_index;
 497
 498         if (o->open_files > o->nr_files || !o->open_files)
 499                 o->open_files = o->nr_files;
 500
 501         if (((o->rate[0] + o->rate[1]) && (o->rate_iops[0] + o->rate_iops[1]))||
 502             ((o->ratemin[0] + o->ratemin[1]) && (o->rate_iops_min[0] +
 503                 o->rate_iops_min[1]))) {
 504                 log_err("fio: rate and rate_iops are mutually exclusive\n");
 505                 ret = 1;
 506         }
 507         if ((o->rate[0] < o->ratemin[0]) || (o->rate[1] < o->ratemin[1]) ||
 508             (o->rate_iops[0] < o->rate_iops_min[0]) ||
 509             (o->rate_iops[1] < o->rate_iops_min[1])) {
 510                 log_err("fio: minimum rate exceeds rate\n");
 511                 ret = 1;
 512         }
 513
 514         if (!o->timeout && o->time_based) {
 515                 log_err("fio: time_based requires a runtime/timeout setting\n");
 516                 o->time_based = 0;
 517                 ret = warnings_fatal;
 518         }
 519
 520         if (o->fill_device && !o->size)
 521                 o->size = -1ULL;
 522
 523         if (o->verify != VERIFY_NONE) {
 524                 if (td_write(td) && o->do_verify && o->numjobs > 1) {
 525                         log_info("Multiple writers may overwrite blocks that "
 526                                 "belong to other jobs. This can cause "
 527                                 "verification failures.\n");
 528                         ret = warnings_fatal;
 529                 }
 530
 531                 o->refill_buffers = 1;
 532                 if (o->max_bs[DDIR_WRITE] != o->min_bs[DDIR_WRITE] &&
 533                     !o->verify_interval)
 534                         o->verify_interval = o->min_bs[DDIR_WRITE];
 535         }
 536
 537         if (o->pre_read) {
 538                 o->invalidate_cache = 0;
 539                 if (td->io_ops->flags & FIO_PIPEIO) {
 540                         log_info("fio: cannot pre-read files with an IO engine"
 541                                  " that isn't seekable. Pre-read disabled.\n");
 542                         ret = warnings_fatal;
 543                 }
 544         }
 545
 546 #ifndef FIO_HAVE_FDATASYNC
 547         if (o->fdatasync_blocks) {
 548                 log_info("fio: this platform does not support fdatasync()"
 549                          " falling back to using fsync().  Use the 'fsync'"
 550                          " option instead of 'fdatasync' to get rid of"
 551                          " this warning\n");
 552                 o->fsync_blocks = o->fdatasync_blocks;
 553                 o->fdatasync_blocks = 0;
 554                 ret = warnings_fatal;
 555         }
 556 #endif
 557
 558 #ifdef WIN32
 559         /*
 560          * Windows doesn't support O_DIRECT or O_SYNC with the _open interface,
 561          * so fail if we're passed those flags
 562          */
 563         if ((td->io_ops->flags & FIO_SYNCIO) && (td->o.odirect || td->o.sync_io)) {
 564                 log_err("fio: Windows does not support direct or non-buffered io with"
 565                                 " the synchronous ioengines. Use the 'windowsaio' ioengine"
 566                                 " with 'direct=1' and 'iodepth=1' instead.\n");
 567                 ret = 1;
 568         }
 569 #endif
 570
 571         /*
 572          * For fully compressible data, just zero them at init time.
 573          * It's faster than repeatedly filling it.
 574          */
 575         if (td->o.compress_percentage == 100) {
 576                 td->o.zero_buffers = 1;
 577                 td->o.compress_percentage = 0;
 578         }
 579
 580         return ret;
 581 }
 582
 583 /*
 584  * This function leaks the buffer
 585  */
 586 static char *to_kmg(unsigned int val)
 587 {
 588         char *buf = malloc(32);
 589         char post[] = { 0, 'K', 'M', 'G', 'P', 'E', 0 };
 590         char *p = post;
 591
 592         do {
 593                 if (val & 1023)
 594                         break;
 595
 596                 val >>= 10;
 597                 p++;
 598         } while (*p);
 599
 600         snprintf(buf, 31, "%u%c", val, *p);
 601         return buf;
 602 }
 603
 604 /* External engines are specified by "external:name.o") */
 605 static const char *get_engine_name(const char *str)
 606 {
 607         char *p = strstr(str, ":");
 608
 609         if (!p)
 610                 return str;
 611
 612         p++;
 613         strip_blank_front(&p);
 614         strip_blank_end(p);
 615         return p;
 616 }
 617
 618 static int exists_and_not_file(const char *filename)
 619 {
 620         struct stat sb;
 621
 622         if (lstat(filename, &sb) == -1)
 623                 return 0;
 624
 625         /* \\.\ is the device namespace in Windows, where every file
 626          * is a device node */
 627         if (S_ISREG(sb.st_mode) && strncmp(filename, "\\\\.\\", 4) != 0)
 628                 return 0;
 629
 630         return 1;
 631 }
 632
 633 static void td_fill_rand_seeds_os(struct thread_data *td)
 634 {
 635         os_random_seed(td->rand_seeds[0], &td->bsrange_state);
 636         os_random_seed(td->rand_seeds[1], &td->verify_state);
 637         os_random_seed(td->rand_seeds[2], &td->rwmix_state);
 638
 639         if (td->o.file_service_type == FIO_FSERVICE_RANDOM)
 640                 os_random_seed(td->rand_seeds[3], &td->next_file_state);
 641
 642         os_random_seed(td->rand_seeds[5], &td->file_size_state);
 643         os_random_seed(td->rand_seeds[6], &td->trim_state);
 644
 645         if (!td_random(td))
 646                 return;
 647
 648         if (td->o.rand_repeatable)
 649                 td->rand_seeds[4] = FIO_RANDSEED * td->thread_number;
 650
 651         os_random_seed(td->rand_seeds[4], &td->random_state);
 652 }
 653
 654 static void td_fill_rand_seeds_internal(struct thread_data *td)
 655 {
 656         init_rand_seed(&td->__bsrange_state, td->rand_seeds[0]);
 657         init_rand_seed(&td->__verify_state, td->rand_seeds[1]);
 658         init_rand_seed(&td->__rwmix_state, td->rand_seeds[2]);
 659
 660         if (td->o.file_service_type == FIO_FSERVICE_RANDOM)
 661                 init_rand_seed(&td->__next_file_state, td->rand_seeds[3]);
 662
 663         init_rand_seed(&td->__file_size_state, td->rand_seeds[5]);
 664         init_rand_seed(&td->__trim_state, td->rand_seeds[6]);
 665
 666         if (!td_random(td))
 667                 return;
 668
 669         if (td->o.rand_repeatable)
 670                 td->rand_seeds[4] = FIO_RANDSEED * td->thread_number;
 671
 672         init_rand_seed(&td->__random_state, td->rand_seeds[4]);
 673 }
 674
 675 void td_fill_rand_seeds(struct thread_data *td)
 676 {
 677         if (td->o.use_os_rand)
 678                 td_fill_rand_seeds_os(td);
 679         else
 680                 td_fill_rand_seeds_internal(td);
 681
 682         init_rand_seed(&td->buf_state, td->rand_seeds[7]);
 683 }
 684
 685
 686 /*
 687  * Initializes the ioengine configured for a job, if it has not been done so
 688  * already.
 689  */
 690 int ioengine_load(struct thread_data *td)
 691 {
 692         const char *engine;
 693
 694         /*
 695          * Engine has already been loaded.
 696          */
 697         if (td->io_ops)
 698                 return 0;
 699
 700         engine = get_engine_name(td->o.ioengine);
 701         td->io_ops = load_ioengine(td, engine);
 702         if (!td->io_ops) {
 703                 log_err("fio: failed to load engine %s\n", engine);
 704                 return 1;
 705         }
 706
 707         if (td->io_ops->option_struct_size && td->io_ops->options) {
 708                 /*
 709                  * In cases where td->eo is set, clone it for a child thread.
 710                  * This requires that the parent thread has the same ioengine,
 711                  * but that requirement must be enforced by the code which
 712                  * cloned the thread.
 713                  */
 714                 void *origeo = td->eo;
 715                 /*
 716                  * Otherwise use the default thread options.
 717                  */
 718                 if (!origeo && td != &def_thread && def_thread.eo &&
 719                     def_thread.io_ops->options == td->io_ops->options)
 720                         origeo = def_thread.eo;
 721
 722                 options_init(td->io_ops->options);
 723                 td->eo = malloc(td->io_ops->option_struct_size);
 724                 /*
 725                  * Use the default thread as an option template if this uses the
 726                  * same options structure and there are non-default options
 727                  * used.
 728                  */
 729                 if (origeo) {
 730                         memcpy(td->eo, origeo, td->io_ops->option_struct_size);
 731                         options_mem_dupe(td->eo, td->io_ops->options);
 732                 } else {
 733                         memset(td->eo, 0, td->io_ops->option_struct_size);
 734                         fill_default_options(td->eo, td->io_ops->options);
 735                 }
 736                 *(struct thread_data **)td->eo = td;
 737         }
 738
 739         return 0;
 740 }
 741
 742 /*
 743  * Adds a job to the list of things todo. Sanitizes the various options
 744  * to make sure we don't have conflicts, and initializes various
 745  * members of td.
 746  */
 747 static int add_job(struct thread_data *td, const char *jobname, int job_add_num)
 748 {
 749         const char *ddir_str[] = { NULL, "read", "write", "rw", NULL,
 750                                    "randread", "randwrite", "randrw" };
 751         unsigned int i;
 752         char fname[PATH_MAX];
 753         int numjobs, file_alloced;
 754
 755         /*
 756          * the def_thread is just for options, it's not a real job
 757          */
 758         if (td == &def_thread)
 759                 return 0;
 760
 761         /*
 762          * if we are just dumping the output command line, don't add the job
 763          */
 764         if (dump_cmdline) {
 765                 put_job(td);
 766                 return 0;
 767         }
 768
 769         if (profile_td_init(td))
 770                 goto err;
 771
 772         if (ioengine_load(td))
 773                 goto err;
 774
 775         if (td->o.use_thread)
 776                 nr_thread++;
 777         else
 778                 nr_process++;
 779
 780         if (td->o.odirect)
 781                 td->io_ops->flags |= FIO_RAWIO;
 782
 783         file_alloced = 0;
 784         if (!td->o.filename && !td->files_index && !td->o.read_iolog_file) {
 785                 file_alloced = 1;
 786
 787                 if (td->o.nr_files == 1 && exists_and_not_file(jobname))
 788                         add_file(td, jobname);
 789                 else {
 790                         for (i = 0; i < td->o.nr_files; i++) {
 791                                 sprintf(fname, "%s.%d.%d", jobname,
 792                                                         td->thread_number, i);
 793                                 add_file(td, fname);
 794                         }
 795                 }
 796         }
 797
 798         if (fixup_options(td))
 799                 goto err;
 800
 801         flow_init_job(td);
 802
 803         /*
 804          * IO engines only need this for option callbacks, and the address may
 805          * change in subprocesses.
 806          */
 807         if (td->eo)
 808                 *(struct thread_data **)td->eo = NULL;
 809
 810         if (td->io_ops->flags & FIO_DISKLESSIO) {
 811                 struct fio_file *f;
 812
 813                 for_each_file(td, f, i)
 814                         f->real_file_size = -1ULL;
 815         }
 816
 817         td->mutex = fio_mutex_init(0);
 818
 819         td->ts.clat_percentiles = td->o.clat_percentiles;
 820         if (td->o.overwrite_plist)
 821                 memcpy(td->ts.percentile_list, td->o.percentile_list, sizeof(td->o.percentile_list));
 822         else
 823                 memcpy(td->ts.percentile_list, def_percentile_list, sizeof(def_percentile_list));
 824
 825         td->ts.clat_stat[0].min_val = td->ts.clat_stat[1].min_val = ULONG_MAX;
 826         td->ts.slat_stat[0].min_val = td->ts.slat_stat[1].min_val = ULONG_MAX;
 827         td->ts.lat_stat[0].min_val = td->ts.lat_stat[1].min_val = ULONG_MAX;
 828         td->ts.bw_stat[0].min_val = td->ts.bw_stat[1].min_val = ULONG_MAX;
 829         td->ddir_seq_nr = td->o.ddir_seq_nr;
 830
 831         if ((td->o.stonewall || td->o.new_group) && prev_group_jobs) {
 832                 prev_group_jobs = 0;
 833                 groupid++;
 834         }
 835
 836         td->groupid = groupid;
 837         prev_group_jobs++;
 838
 839         if (init_random_state(td, td->rand_seeds, sizeof(td->rand_seeds))) {
 840                 td_verror(td, errno, "init_random_state");
 841                 goto err;
 842         }
 843
 844         if (setup_rate(td))
 845                 goto err;
 846
 847         if (td->o.write_lat_log) {
 848                 setup_log(&td->lat_log, td->o.log_avg_msec);
 849                 setup_log(&td->slat_log, td->o.log_avg_msec);
 850                 setup_log(&td->clat_log, td->o.log_avg_msec);
 851         }
 852         if (td->o.write_bw_log)
 853                 setup_log(&td->bw_log, td->o.log_avg_msec);
 854         if (td->o.write_iops_log)
 855                 setup_log(&td->iops_log, td->o.log_avg_msec);
 856
 857         if (!td->o.name)
 858                 td->o.name = strdup(jobname);
 859
 860         if (!terse_output) {
 861                 if (!job_add_num) {
 862                         if (!strcmp(td->io_ops->name, "cpuio")) {
 863                                 log_info("%s: ioengine=cpu, cpuload=%u,"
 864                                          " cpucycle=%u\n", td->o.name,
 865                                                         td->o.cpuload,
 866                                                         td->o.cpucycle);
 867                         } else {
 868                                 char *c1, *c2, *c3, *c4;
 869
 870                                 c1 = to_kmg(td->o.min_bs[DDIR_READ]);
 871                                 c2 = to_kmg(td->o.max_bs[DDIR_READ]);
 872                                 c3 = to_kmg(td->o.min_bs[DDIR_WRITE]);
 873                                 c4 = to_kmg(td->o.max_bs[DDIR_WRITE]);
 874
 875                                 log_info("%s: (g=%d): rw=%s, bs=%s-%s/%s-%s,"
 876                                          " ioengine=%s, iodepth=%u\n",
 877                                                 td->o.name, td->groupid,
 878                                                 ddir_str[td->o.td_ddir],
 879                                                 c1, c2, c3, c4,
 880                                                 td->io_ops->name,
 881                                                 td->o.iodepth);
 882
 883                                 free(c1);
 884                                 free(c2);
 885                                 free(c3);
 886                                 free(c4);
 887                         }
 888                 } else if (job_add_num == 1)
 889                         log_info("...\n");
 890         }
 891
 892         /*
 893          * recurse add identical jobs, clear numjobs and stonewall options
 894          * as they don't apply to sub-jobs
 895          */
 896         numjobs = td->o.numjobs;
 897         while (--numjobs) {
 898                 struct thread_data *td_new = get_new_job(0, td, 1);
 899
 900                 if (!td_new)
 901                         goto err;
 902
 903                 td_new->o.numjobs = 1;
 904                 td_new->o.stonewall = 0;
 905                 td_new->o.new_group = 0;
 906
 907                 if (file_alloced) {
 908                         td_new->o.filename = NULL;
 909                         td_new->files_index = 0;
 910                         td_new->files_size = 0;
 911                         td_new->files = NULL;
 912                 }
 913
 914                 job_add_num = numjobs - 1;
 915
 916                 if (add_job(td_new, jobname, job_add_num))
 917                         goto err;
 918         }
 919
 920         return 0;
 921 err:
 922         put_job(td);
 923         return -1;
 924 }
 925
 926 /*
 927  * Parse as if 'o' was a command line
 928  */
 929 void add_job_opts(const char **o)
 930 {
 931         struct thread_data *td, *td_parent;
 932         int i, in_global = 1;
 933         char jobname[32];
 934
 935         i = 0;
 936         td_parent = td = NULL;
 937         while (o[i]) {
 938                 if (!strncmp(o[i], "name", 4)) {
 939                         in_global = 0;
 940                         if (td)
 941                                 add_job(td, jobname, 0);
 942                         td = NULL;
 943                         sprintf(jobname, "%s", o[i] + 5);
 944                 }
 945                 if (in_global && !td_parent)
 946                         td_parent = get_new_job(1, &def_thread, 0);
 947                 else if (!in_global && !td) {
 948                         if (!td_parent)
 949                                 td_parent = &def_thread;
 950                         td = get_new_job(0, td_parent, 0);
 951                 }
 952                 if (in_global)
 953                         fio_options_parse(td_parent, (char **) &o[i], 1);
 954                 else
 955                         fio_options_parse(td, (char **) &o[i], 1);
 956                 i++;
 957         }
 958
 959         if (td)
 960                 add_job(td, jobname, 0);
 961 }
 962
 963 static int skip_this_section(const char *name)
 964 {
 965         int i;
 966
 967         if (!nr_job_sections)
 968                 return 0;
 969         if (!strncmp(name, "global", 6))
 970                 return 0;
 971
 972         for (i = 0; i < nr_job_sections; i++)
 973                 if (!strcmp(job_sections[i], name))
 974                         return 0;
 975
 976         return 1;
 977 }
 978
 979 static int is_empty_or_comment(char *line)
 980 {
 981         unsigned int i;
 982
 983         for (i = 0; i < strlen(line); i++) {
 984                 if (line[i] == ';')
 985                         return 1;
 986                 if (line[i] == '#')
 987                         return 1;
 988                 if (!isspace((int) line[i]) && !iscntrl((int) line[i]))
 989                         return 0;
 990         }
 991
 992         return 1;
 993 }
 994
 995 /*
 996  * This is our [ini] type file parser.
 997  */
 998 int parse_jobs_ini(char *file, int is_buf, int stonewall_flag)
 999 {
1000         unsigned int global;
1001         struct thread_data *td;
1002         char *string, *name;
1003         FILE *f;
1004         char *p;
1005         int ret = 0, stonewall;
1006         int first_sect = 1;
1007         int skip_fgets = 0;
1008         int inside_skip = 0;
1009         char **opts;
1010         int i, alloc_opts, num_opts;
1011
1012         if (is_buf)
1013                 f = NULL;
1014         else {
1015                 if (!strcmp(file, "-"))
1016                         f = stdin;
1017                 else
1018                         f = fopen(file, "r");
1019
1020                 if (!f) {
1021                         perror("fopen job file");
1022                         return 1;
1023                 }
1024         }
1025
1026         string = malloc(4096);
1027
1028         /*
1029          * it's really 256 + small bit, 280 should suffice
1030          */
1031         name = malloc(280);
1032         memset(name, 0, 280);
1033
1034         alloc_opts = 8;
1035         opts = malloc(sizeof(char *) * alloc_opts);
1036         num_opts = 0;
1037
1038         stonewall = stonewall_flag;
1039         do {
1040                 /*
1041                  * if skip_fgets is set, we already have loaded a line we
1042                  * haven't handled.
1043                  */
1044                 if (!skip_fgets) {
1045                         if (is_buf)
1046                                 p = strsep(&file, "\n");
1047                         else
1048                                 p = fgets(string, 4096, f);
1049                         if (!p)
1050                                 break;
1051                 }
1052
1053                 skip_fgets = 0;
1054                 strip_blank_front(&p);
1055                 strip_blank_end(p);
1056
1057                 if (is_empty_or_comment(p))
1058                         continue;
1059                 if (sscanf(p, "[%255[^\n]]", name) != 1) {
1060                         if (inside_skip)
1061                                 continue;
1062                         log_err("fio: option <%s> outside of [] job section\n",
1063                                                                         p);
1064                         break;
1065                 }
1066
1067                 name[strlen(name) - 1] = '\0';
1068
1069                 if (skip_this_section(name)) {
1070                         inside_skip = 1;
1071                         continue;
1072                 } else
1073                         inside_skip = 0;
1074
1075                 global = !strncmp(name, "global", 6);
1076
1077                 if (dump_cmdline) {
1078                         if (first_sect)
1079                                 log_info("fio ");
1080                         if (!global)
1081                                 log_info("--name=%s ", name);
1082                         first_sect = 0;
1083                 }
1084
1085                 td = get_new_job(global, &def_thread, 0);
1086                 if (!td) {
1087                         ret = 1;
1088                         break;
1089                 }
1090
1091                 /*
1092                  * Seperate multiple job files by a stonewall
1093                  */
1094                 if (!global && stonewall) {
1095                         td->o.stonewall = stonewall;
1096                         stonewall = 0;
1097                 }
1098
1099                 num_opts = 0;
1100                 memset(opts, 0, alloc_opts * sizeof(char *));
1101
1102                 while (1) {
1103                         if (is_buf)
1104                                 p = strsep(&file, "\n");
1105                         else
1106                                 p = fgets(string, 4096, f);
1107                         if (!p)
1108                                 break;
1109
1110                         if (is_empty_or_comment(p))
1111                                 continue;
1112
1113                         strip_blank_front(&p);
1114
1115                         /*
1116                          * new section, break out and make sure we don't
1117                          * fgets() a new line at the top.
1118                          */
1119                         if (p[0] == '[') {
1120                                 skip_fgets = 1;
1121                                 break;
1122                         }
1123
1124                         strip_blank_end(p);
1125
1126                         if (num_opts == alloc_opts) {
1127                                 alloc_opts <<= 1;
1128                                 opts = realloc(opts,
1129                                                 alloc_opts * sizeof(char *));
1130                         }
1131
1132                         opts[num_opts] = strdup(p);
1133                         num_opts++;
1134                 }
1135
1136                 ret = fio_options_parse(td, opts, num_opts);
1137                 if (!ret) {
1138                         if (dump_cmdline)
1139                                 for (i = 0; i < num_opts; i++)
1140                                         log_info("--%s ", opts[i]);
1141
1142                         ret = add_job(td, name, 0);
1143                 } else {
1144                         log_err("fio: job %s dropped\n", name);
1145                         put_job(td);
1146                 }
1147
1148                 for (i = 0; i < num_opts; i++)
1149                         free(opts[i]);
1150                 num_opts = 0;
1151         } while (!ret);
1152
1153         if (dump_cmdline)
1154                 log_info("\n");
1155
1156         i = 0;
1157         while (i < nr_job_sections) {
1158                 free(job_sections[i]);
1159                 i++;
1160         }
1161
1162         for (i = 0; i < num_opts; i++)
1163                 free(opts[i]);
1164
1165         free(string);
1166         free(name);
1167         free(opts);
1168         if (!is_buf && f != stdin)
1169                 fclose(f);
1170         return ret;
1171 }
1172
1173 static int fill_def_thread(void)
1174 {
1175         memset(&def_thread, 0, sizeof(def_thread));
1176
1177         fio_getaffinity(getpid(), &def_thread.o.cpumask);
1178         def_thread.o.timeout = def_timeout;
1179
1180         /*
1181          * fill default options
1182          */
1183         fio_fill_default_options(&def_thread);
1184         return 0;
1185 }
1186
1187 static void usage(const char *name)
1188 {
1189         printf("fio %s\n", fio_version_string);
1190         printf("%s [options] [job options] <job file(s)>\n", name);
1191         printf("  --debug=options\tEnable debug logging. May be one/more of:\n"
1192                 "\t\t\tprocess,file,io,mem,blktrace,verify,random,parse,\n"
1193                 "\t\t\tdiskutil,job,mutex,profile,time,net\n");
1194         printf("  --output\t\tWrite output to file\n");
1195         printf("  --timeout\t\tRuntime in seconds\n");
1196         printf("  --latency-log\t\tGenerate per-job latency logs\n");
1197         printf("  --bandwidth-log\tGenerate per-job bandwidth logs\n");
1198         printf("  --minimal\t\tMinimal (terse) output\n");
1199         printf("  --version\t\tPrint version info and exit\n");
1200         printf("  --terse-version=x\tSet terse version output format to 'x'\n");
1201         printf("  --help\t\tPrint this page\n");
1202         printf("  --cmdhelp=cmd\t\tPrint command help, \"all\" for all of"
1203                 " them\n");
1204         printf("  --enghelp=engine\tPrint ioengine help, or list"
1205                 " available ioengines\n");
1206         printf("  --enghelp=engine,cmd\tPrint help for an ioengine"
1207                 " cmd\n");
1208         printf("  --showcmd\t\tTurn a job file into command line options\n");
1209         printf("  --eta=when\t\tWhen ETA estimate should be printed\n");
1210         printf("            \t\tMay be \"always\", \"never\" or \"auto\"\n");
1211         printf("  --readonly\t\tTurn on safety read-only checks, preventing"
1212                 " writes\n");
1213         printf("  --section=name\tOnly run specified section in job file\n");
1214         printf("  --alloc-size=kb\tSet smalloc pool to this size in kb"
1215                 " (def 1024)\n");
1216         printf("  --warnings-fatal\tFio parser warnings are fatal\n");
1217         printf("  --max-jobs=nr\t\tMaximum number of threads/processes to support\n");
1218         printf("  --server=args\t\tStart a backend fio server\n");
1219         printf("  --daemonize=pidfile\tBackground fio server, write pid to file\n");
1220         printf("  --client=hostname\tTalk to remote backend fio server at hostname\n");
1221         printf("\nFio was written by Jens Axboe <jens.axboe@oracle.com>");
1222         printf("\n                 Jens Axboe <jaxboe@fusionio.com>\n");
1223 }
1224
1225 #ifdef FIO_INC_DEBUG
1226 struct debug_level debug_levels[] = {
1227         { .name = "process",    .shift = FD_PROCESS, },
1228         { .name = "file",       .shift = FD_FILE, },
1229         { .name = "io",         .shift = FD_IO, },
1230         { .name = "mem",        .shift = FD_MEM, },
1231         { .name = "blktrace",   .shift = FD_BLKTRACE },
1232         { .name = "verify",     .shift = FD_VERIFY },
1233         { .name = "random",     .shift = FD_RANDOM },
1234         { .name = "parse",      .shift = FD_PARSE },
1235         { .name = "diskutil",   .shift = FD_DISKUTIL },
1236         { .name = "job",        .shift = FD_JOB },
1237         { .name = "mutex",      .shift = FD_MUTEX },
1238         { .name = "profile",    .shift = FD_PROFILE },
1239         { .name = "time",       .shift = FD_TIME },
1240         { .name = "net",        .shift = FD_NET },
1241         { .name = NULL, },
1242 };
1243
1244 static int set_debug(const char *string)
1245 {
1246         struct debug_level *dl;
1247         char *p = (char *) string;
1248         char *opt;
1249         int i;
1250
1251         if (!strcmp(string, "?") || !strcmp(string, "help")) {
1252                 log_info("fio: dumping debug options:");
1253                 for (i = 0; debug_levels[i].name; i++) {
1254                         dl = &debug_levels[i];
1255                         log_info("%s,", dl->name);
1256                 }
1257                 log_info("all\n");
1258                 return 1;
1259         }
1260
1261         while ((opt = strsep(&p, ",")) != NULL) {
1262                 int found = 0;
1263
1264                 if (!strncmp(opt, "all", 3)) {
1265                         log_info("fio: set all debug options\n");
1266                         fio_debug = ~0UL;
1267                         continue;
1268                 }
1269
1270                 for (i = 0; debug_levels[i].name; i++) {
1271                         dl = &debug_levels[i];
1272                         found = !strncmp(opt, dl->name, strlen(dl->name));
1273                         if (!found)
1274                                 continue;
1275
1276                         if (dl->shift == FD_JOB) {
1277                                 opt = strchr(opt, ':');
1278                                 if (!opt) {
1279                                         log_err("fio: missing job number\n");
1280                                         break;
1281                                 }
1282                                 opt++;
1283                                 fio_debug_jobno = atoi(opt);
1284                                 log_info("fio: set debug jobno %d\n",
1285                                                         fio_debug_jobno);
1286                         } else {
1287                                 log_info("fio: set debug option %s\n", opt);
1288                                 fio_debug |= (1UL << dl->shift);
1289                         }
1290                         break;
1291                 }
1292
1293                 if (!found)
1294                         log_err("fio: debug mask %s not found\n", opt);
1295         }
1296         return 0;
1297 }
1298 #else
1299 static int set_debug(const char *string)
1300 {
1301         log_err("fio: debug tracing not included in build\n");
1302         return 1;
1303 }
1304 #endif
1305
1306 static void fio_options_fill_optstring(void)
1307 {
1308         char *ostr = cmd_optstr;
1309         int i, c;
1310
1311         c = i = 0;
1312         while (l_opts[i].name) {
1313                 ostr[c++] = l_opts[i].val;
1314                 if (l_opts[i].has_arg == required_argument)
1315                         ostr[c++] = ':';
1316                 else if (l_opts[i].has_arg == optional_argument) {
1317                         ostr[c++] = ':';
1318                         ostr[c++] = ':';
1319                 }
1320                 i++;
1321         }
1322         ostr[c] = '\0';
1323 }
1324
1325 static int client_flag_set(char c)
1326 {
1327         int i;
1328
1329         i = 0;
1330         while (l_opts[i].name) {
1331                 int val = l_opts[i].val;
1332
1333                 if (c == (val & 0xff))
1334                         return (val & FIO_CLIENT_FLAG);
1335
1336                 i++;
1337         }
1338
1339         return 0;
1340 }
1341
1342 void parse_cmd_client(void *client, char *opt)
1343 {
1344         fio_client_add_cmd_option(client, opt);
1345 }
1346
1347 int parse_cmd_line(int argc, char *argv[])
1348 {
1349         struct thread_data *td = NULL;
1350         int c, ini_idx = 0, lidx, ret = 0, do_exit = 0, exit_val = 0;
1351         char *ostr = cmd_optstr;
1352         void *pid_file = NULL;
1353         void *cur_client = NULL;
1354         int backend = 0;
1355
1356         /*
1357          * Reset optind handling, since we may call this multiple times
1358          * for the backend.
1359          */
1360         optind = 1;
1361
1362         while ((c = getopt_long_only(argc, argv, ostr, l_opts, &lidx)) != -1) {
1363                 did_arg = 1;
1364
1365                 if ((c & FIO_CLIENT_FLAG) || client_flag_set(c)) {
1366                         parse_cmd_client(cur_client, argv[optind - 1]);
1367                         c &= ~FIO_CLIENT_FLAG;
1368                 }
1369
1370                 switch (c) {
1371                 case 'a':
1372                         smalloc_pool_size = atoi(optarg);
1373                         break;
1374                 case 't':
1375                         def_timeout = atoi(optarg);
1376                         break;
1377                 case 'l':
1378                         write_lat_log = 1;
1379                         break;
1380                 case 'b':
1381                         write_bw_log = 1;
1382                         break;
1383                 case 'o':
1384                         f_out = fopen(optarg, "w+");
1385                         if (!f_out) {
1386                                 perror("fopen output");
1387                                 exit(1);
1388                         }
1389                         f_err = f_out;
1390                         break;
1391                 case 'm':
1392                         terse_output = 1;
1393                         break;
1394                 case 'h':
1395                         if (!cur_client) {
1396                                 usage(argv[0]);
1397                                 do_exit++;
1398                         }
1399                         break;
1400                 case 'c':
1401                         if (!cur_client) {
1402                                 fio_show_option_help(optarg);
1403                                 do_exit++;
1404                         }
1405                         break;
1406                 case 'i':
1407                         if (!cur_client) {
1408                                 fio_show_ioengine_help(optarg);
1409                                 do_exit++;
1410                         }
1411                         break;
1412                 case 's':
1413                         dump_cmdline = 1;
1414                         break;
1415                 case 'r':
1416                         read_only = 1;
1417                         break;
1418                 case 'v':
1419                         if (!cur_client) {
1420                                 log_info("fio %s\n", fio_version_string);
1421                                 do_exit++;
1422                         }
1423                         break;
1424                 case 'V':
1425                         terse_version = atoi(optarg);
1426                         if (!(terse_version == 2 || terse_version == 3)) {
1427                                 log_err("fio: bad terse version format\n");
1428                                 exit_val = 1;
1429                                 do_exit++;
1430                         }
1431                         break;
1432                 case 'e':
1433                         if (!strcmp("always", optarg))
1434                                 eta_print = FIO_ETA_ALWAYS;
1435                         else if (!strcmp("never", optarg))
1436                                 eta_print = FIO_ETA_NEVER;
1437                         break;
1438                 case 'd':
1439                         if (set_debug(optarg))
1440                                 do_exit++;
1441                         break;
1442                 case 'x': {
1443                         size_t new_size;
1444
1445                         if (!strcmp(optarg, "global")) {
1446                                 log_err("fio: can't use global as only "
1447                                         "section\n");
1448                                 do_exit++;
1449                                 exit_val = 1;
1450                                 break;
1451                         }
1452                         new_size = (nr_job_sections + 1) * sizeof(char *);
1453                         job_sections = realloc(job_sections, new_size);
1454                         job_sections[nr_job_sections] = strdup(optarg);
1455                         nr_job_sections++;
1456                         break;
1457                         }
1458                 case 'p':
1459                         exec_profile = strdup(optarg);
1460                         break;
1461                 case FIO_GETOPT_JOB: {
1462                         const char *opt = l_opts[lidx].name;
1463                         char *val = optarg;
1464
1465                         if (!strncmp(opt, "name", 4) && td) {
1466                                 ret = add_job(td, td->o.name ?: "fio", 0);
1467                                 if (ret)
1468                                         return 0;
1469                                 td = NULL;
1470                         }
1471                         if (!td) {
1472                                 int is_section = !strncmp(opt, "name", 4);
1473                                 int global = 0;
1474
1475                                 if (!is_section || !strncmp(val, "global", 6))
1476                                         global = 1;
1477
1478                                 if (is_section && skip_this_section(val))
1479                                         continue;
1480
1481                                 td = get_new_job(global, &def_thread, 1);
1482                                 if (!td || ioengine_load(td))
1483                                         return 0;
1484                                 fio_options_set_ioengine_opts(l_opts, td);
1485                         }
1486
1487                         ret = fio_cmd_option_parse(td, opt, val);
1488
1489                         if (!ret && !strcmp(opt, "ioengine")) {
1490                                 free_ioengine(td);
1491                                 if (ioengine_load(td))
1492                                         return 0;
1493                                 fio_options_set_ioengine_opts(l_opts, td);
1494                         }
1495                         break;
1496                 }
1497                 case FIO_GETOPT_IOENGINE: {
1498                         const char *opt = l_opts[lidx].name;
1499                         char *val = optarg;
1500                         opt = l_opts[lidx].name;
1501                         val = optarg;
1502                         ret = fio_cmd_ioengine_option_parse(td, opt, val);
1503                         break;
1504                 }
1505                 case 'w':
1506                         warnings_fatal = 1;
1507                         break;
1508                 case 'j':
1509                         max_jobs = atoi(optarg);
1510                         if (!max_jobs || max_jobs > REAL_MAX_JOBS) {
1511                                 log_err("fio: invalid max jobs: %d\n", max_jobs);
1512                                 do_exit++;
1513                                 exit_val = 1;
1514                         }
1515                         break;
1516                 case 'S':
1517                         if (nr_clients) {
1518                                 log_err("fio: can't be both client and server\n");
1519                                 do_exit++;
1520                                 exit_val = 1;
1521                                 break;
1522                         }
1523                         if (optarg)
1524                                 fio_server_set_arg(optarg);
1525                         is_backend = 1;
1526                         backend = 1;
1527                         break;
1528                 case 'D':
1529                         pid_file = strdup(optarg);
1530                         break;
1531                 case 'C':
1532                         if (is_backend) {
1533                                 log_err("fio: can't be both client and server\n");
1534                                 do_exit++;
1535                                 exit_val = 1;
1536                                 break;
1537                         }
1538                         if (fio_client_add(optarg, &cur_client)) {
1539                                 log_err("fio: failed adding client %s\n", optarg);
1540                                 do_exit++;
1541                                 exit_val = 1;
1542                                 break;
1543                         }
1544                         break;
1545                 default:
1546                         do_exit++;
1547                         exit_val = 1;
1548                         break;
1549                 }
1550                 if (do_exit)
1551                         break;
1552         }
1553
1554         if (do_exit) {
1555                 if (exit_val && !(is_backend || nr_clients))
1556                         exit(exit_val);
1557         }
1558
1559         if (nr_clients && fio_clients_connect()) {
1560                 do_exit++;
1561                 exit_val = 1;
1562                 return -1;
1563         }
1564
1565         if (is_backend && backend)
1566                 return fio_start_server(pid_file);
1567
1568         if (td) {
1569                 if (!ret)
1570                         ret = add_job(td, td->o.name ?: "fio", 0);
1571         }
1572
1573         while (!ret && optind < argc) {
1574                 ini_idx++;
1575                 ini_file = realloc(ini_file, ini_idx * sizeof(char *));
1576                 ini_file[ini_idx - 1] = strdup(argv[optind]);
1577                 optind++;
1578         }
1579
1580         return ini_idx;
1581 }
1582
1583 int parse_options(int argc, char *argv[])
1584 {
1585         int job_files, i;
1586
1587         f_out = stdout;
1588         f_err = stderr;
1589
1590         fio_options_fill_optstring();
1591         fio_options_dup_and_init(l_opts);
1592
1593         atexit(free_shm);
1594
1595         if (fill_def_thread())
1596                 return 1;
1597
1598         job_files = parse_cmd_line(argc, argv);
1599
1600         if (job_files > 0) {
1601                 for (i = 0; i < job_files; i++) {
1602                         if (fill_def_thread())
1603                                 return 1;
1604                         if (nr_clients) {
1605                                 if (fio_clients_send_ini(ini_file[i]))
1606                                         return 1;
1607                                 free(ini_file[i]);
1608                         } else if (!is_backend) {
1609                                 if (parse_jobs_ini(ini_file[i], 0, i))
1610                                         return 1;
1611                                 free(ini_file[i]);
1612                         }
1613                 }
1614         }
1615
1616         free(ini_file);
1617         fio_options_free(&def_thread);
1618
1619         if (!thread_number) {
1620                 if (dump_cmdline)
1621                         return 0;
1622                 if (exec_profile)
1623                         return 0;
1624                 if (is_backend || nr_clients)
1625                         return 0;
1626                 if (did_arg)
1627                         return 0;
1628
1629                 log_err("No jobs(s) defined\n\n");
1630
1631                 if (!did_arg) {
1632                         usage(argv[0]);
1633                         return 1;
1634                 }
1635
1636                 return 0;
1637         }
1638
1639         if (def_thread.o.gtod_offload) {
1640                 fio_gtod_init();
1641                 fio_gtod_offload = 1;
1642                 fio_gtod_cpu = def_thread.o.gtod_cpu;
1643         }
1644
1645         if (!terse_output)
1646                 log_info("fio %s\n", fio_version_string);
1647
1648         return 0;
1649 }