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  =  1.00 },
  78         { .u.f  =  5.00 },
  79         { .u.f  = 10.00 },
  80         { .u.f  = 20.00 },
  81         { .u.f  = 30.00 },
  82         { .u.f  = 40.00 },
  83         { .u.f  = 50.00 },
  84         { .u.f  = 60.00 },
  85         { .u.f  = 70.00 },
  86         { .u.f  = 80.00 },
  87         { .u.f  = 90.00 },
  88         { .u.f  = 95.00 },
  89         { .u.f  = 99.00 },
  90         { .u.f  = 99.50 },
  91         { .u.f  = 99.90 },
  92         { .u.f  = 99.95 },
  93         { .u.f  = 99.99 },
  94 };
  95
  96 #define FIO_CLIENT_FLAG         (1 << 16)
  97
  98 /*
  99  * Command line options. These will contain the above, plus a few
 100  * extra that only pertain to fio itself and not jobs.
 101  */
 102 static struct option l_opts[FIO_NR_OPTIONS] = {
 103         {
 104                 .name           = (char *) "output",
 105                 .has_arg        = required_argument,
 106                 .val            = 'o' | FIO_CLIENT_FLAG,
 107         },
 108         {
 109                 .name           = (char *) "timeout",
 110                 .has_arg        = required_argument,
 111                 .val            = 't' | FIO_CLIENT_FLAG,
 112         },
 113         {
 114                 .name           = (char *) "latency-log",
 115                 .has_arg        = required_argument,
 116                 .val            = 'l' | FIO_CLIENT_FLAG,
 117         },
 118         {
 119                 .name           = (char *) "bandwidth-log",
 120                 .has_arg        = required_argument,
 121                 .val            = 'b' | FIO_CLIENT_FLAG,
 122         },
 123         {
 124                 .name           = (char *) "minimal",
 125                 .has_arg        = optional_argument,
 126                 .val            = 'm' | FIO_CLIENT_FLAG,
 127         },
 128         {
 129                 .name           = (char *) "version",
 130                 .has_arg        = no_argument,
 131                 .val            = 'v' | FIO_CLIENT_FLAG,
 132         },
 133         {
 134                 .name           = (char *) "help",
 135                 .has_arg        = no_argument,
 136                 .val            = 'h' | FIO_CLIENT_FLAG,
 137         },
 138         {
 139                 .name           = (char *) "cmdhelp",
 140                 .has_arg        = optional_argument,
 141                 .val            = 'c' | FIO_CLIENT_FLAG,
 142         },
 143         {
 144                 .name              = (char *) "enghelp",
 145                 .has_arg        = optional_argument,
 146                 .val                = 'i' | FIO_CLIENT_FLAG,
 147         },
 148         {
 149                 .name           = (char *) "showcmd",
 150                 .has_arg        = no_argument,
 151                 .val            = 's' | FIO_CLIENT_FLAG,
 152         },
 153         {
 154                 .name           = (char *) "readonly",
 155                 .has_arg        = no_argument,
 156                 .val            = 'r' | FIO_CLIENT_FLAG,
 157         },
 158         {
 159                 .name           = (char *) "eta",
 160                 .has_arg        = required_argument,
 161                 .val            = 'e' | FIO_CLIENT_FLAG,
 162         },
 163         {
 164                 .name           = (char *) "debug",
 165                 .has_arg        = required_argument,
 166                 .val            = 'd' | FIO_CLIENT_FLAG,
 167         },
 168         {
 169                 .name           = (char *) "section",
 170                 .has_arg        = required_argument,
 171                 .val            = 'x' | FIO_CLIENT_FLAG,
 172         },
 173         {
 174                 .name           = (char *) "alloc-size",
 175                 .has_arg        = required_argument,
 176                 .val            = 'a' | FIO_CLIENT_FLAG,
 177         },
 178         {
 179                 .name           = (char *) "profile",
 180                 .has_arg        = required_argument,
 181                 .val            = 'p' | FIO_CLIENT_FLAG,
 182         },
 183         {
 184                 .name           = (char *) "warnings-fatal",
 185                 .has_arg        = no_argument,
 186                 .val            = 'w' | FIO_CLIENT_FLAG,
 187         },
 188         {
 189                 .name           = (char *) "max-jobs",
 190                 .has_arg        = required_argument,
 191                 .val            = 'j' | FIO_CLIENT_FLAG,
 192         },
 193         {
 194                 .name           = (char *) "terse-version",
 195                 .has_arg        = required_argument,
 196                 .val            = 'V' | FIO_CLIENT_FLAG,
 197         },
 198         {
 199                 .name           = (char *) "server",
 200                 .has_arg        = optional_argument,
 201                 .val            = 'S',
 202         },
 203         {       .name           = (char *) "daemonize",
 204                 .has_arg        = required_argument,
 205                 .val            = 'D',
 206         },
 207         {
 208                 .name           = (char *) "client",
 209                 .has_arg        = required_argument,
 210                 .val            = 'C',
 211         },
 212         {
 213                 .name           = NULL,
 214         },
 215 };
 216
 217 static void free_shm(void)
 218 {
 219         struct shmid_ds sbuf;
 220
 221         if (threads) {
 222                 void *tp = threads;
 223
 224                 threads = NULL;
 225                 file_hash_exit();
 226                 flow_exit();
 227                 fio_debug_jobp = NULL;
 228                 shmdt(tp);
 229                 shmctl(shm_id, IPC_RMID, &sbuf);
 230         }
 231
 232         scleanup();
 233 }
 234
 235 /*
 236  * The thread area is shared between the main process and the job
 237  * threads/processes. So setup a shared memory segment that will hold
 238  * all the job info. We use the end of the region for keeping track of
 239  * open files across jobs, for file sharing.
 240  */
 241 static int setup_thread_area(void)
 242 {
 243         void *hash;
 244
 245         if (threads)
 246                 return 0;
 247
 248         /*
 249          * 1024 is too much on some machines, scale max_jobs if
 250          * we get a failure that looks like too large a shm segment
 251          */
 252         do {
 253                 size_t size = max_jobs * sizeof(struct thread_data);
 254
 255                 size += file_hash_size;
 256                 size += sizeof(unsigned int);
 257
 258                 shm_id = shmget(0, size, IPC_CREAT | 0600);
 259                 if (shm_id != -1)
 260                         break;
 261                 if (errno != EINVAL && errno != ENOMEM) {
 262                         perror("shmget");
 263                         break;
 264                 }
 265
 266                 max_jobs >>= 1;
 267         } while (max_jobs);
 268
 269         if (shm_id == -1)
 270                 return 1;
 271
 272         threads = shmat(shm_id, NULL, 0);
 273         if (threads == (void *) -1) {
 274                 perror("shmat");
 275                 return 1;
 276         }
 277
 278         memset(threads, 0, max_jobs * sizeof(struct thread_data));
 279         hash = (void *) threads + max_jobs * sizeof(struct thread_data);
 280         fio_debug_jobp = (void *) hash + file_hash_size;
 281         *fio_debug_jobp = -1;
 282         file_hash_init(hash);
 283
 284         flow_init();
 285
 286         return 0;
 287 }
 288
 289 /*
 290  * Return a free job structure.
 291  */
 292 static struct thread_data *get_new_job(int global, struct thread_data *parent,
 293                                        int preserve_eo)
 294 {
 295         struct thread_data *td;
 296
 297         if (global)
 298                 return &def_thread;
 299         if (setup_thread_area()) {
 300                 log_err("error: failed to setup shm segment\n");
 301                 return NULL;
 302         }
 303         if (thread_number >= max_jobs) {
 304                 log_err("error: maximum number of jobs (%d) reached.\n",
 305                                 max_jobs);
 306                 return NULL;
 307         }
 308
 309         td = &threads[thread_number++];
 310         *td = *parent;
 311
 312         td->io_ops = NULL;
 313         if (!preserve_eo)
 314                 td->eo = NULL;
 315
 316         td->o.uid = td->o.gid = -1U;
 317
 318         dup_files(td, parent);
 319         fio_options_mem_dupe(td);
 320
 321         profile_add_hooks(td);
 322
 323         td->thread_number = thread_number;
 324         return td;
 325 }
 326
 327 static void put_job(struct thread_data *td)
 328 {
 329         if (td == &def_thread)
 330                 return;
 331
 332         profile_td_exit(td);
 333         flow_exit_job(td);
 334
 335         if (td->error)
 336                 log_info("fio: %s\n", td->verror);
 337
 338         fio_options_free(td);
 339         if (td->io_ops)
 340                 free_ioengine(td);
 341
 342         memset(&threads[td->thread_number - 1], 0, sizeof(*td));
 343         thread_number--;
 344 }
 345
 346 static int __setup_rate(struct thread_data *td, enum fio_ddir ddir)
 347 {
 348         unsigned int bs = td->o.min_bs[ddir];
 349
 350         assert(ddir_rw(ddir));
 351
 352         if (td->o.rate[ddir])
 353                 td->rate_bps[ddir] = td->o.rate[ddir];
 354         else
 355                 td->rate_bps[ddir] = td->o.rate_iops[ddir] * bs;
 356
 357         if (!td->rate_bps[ddir]) {
 358                 log_err("rate lower than supported\n");
 359                 return -1;
 360         }
 361
 362         td->rate_pending_usleep[ddir] = 0;
 363         return 0;
 364 }
 365
 366 static int setup_rate(struct thread_data *td)
 367 {
 368         int ret = 0;
 369
 370         if (td->o.rate[DDIR_READ] || td->o.rate_iops[DDIR_READ])
 371                 ret = __setup_rate(td, DDIR_READ);
 372         if (td->o.rate[DDIR_WRITE] || td->o.rate_iops[DDIR_WRITE])
 373                 ret |= __setup_rate(td, DDIR_WRITE);
 374
 375         return ret;
 376 }
 377
 378 static int fixed_block_size(struct thread_options *o)
 379 {
 380         return o->min_bs[DDIR_READ] == o->max_bs[DDIR_READ] &&
 381                 o->min_bs[DDIR_WRITE] == o->max_bs[DDIR_WRITE] &&
 382                 o->min_bs[DDIR_READ] == o->min_bs[DDIR_WRITE];
 383 }
 384
 385 /*
 386  * Lazy way of fixing up options that depend on each other. We could also
 387  * define option callback handlers, but this is easier.
 388  */
 389 static int fixup_options(struct thread_data *td)
 390 {
 391         struct thread_options *o = &td->o;
 392         int ret = 0;
 393
 394 #ifndef FIO_HAVE_PSHARED_MUTEX
 395         if (!o->use_thread) {
 396                 log_info("fio: this platform does not support process shared"
 397                          " mutexes, forcing use of threads. Use the 'thread'"
 398                          " option to get rid of this warning.\n");
 399                 o->use_thread = 1;
 400                 ret = warnings_fatal;
 401         }
 402 #endif
 403
 404         if (o->write_iolog_file && o->read_iolog_file) {
 405                 log_err("fio: read iolog overrides write_iolog\n");
 406                 free(o->write_iolog_file);
 407                 o->write_iolog_file = NULL;
 408                 ret = warnings_fatal;
 409         }
 410
 411         /*
 412          * only really works with 1 file
 413          */
 414         if (o->zone_size && o->open_files == 1)
 415                 o->zone_size = 0;
 416
 417         /*
 418          * If zone_range isn't specified, backward compatibility dictates it
 419          * should be made equal to zone_size.
 420          */
 421         if (o->zone_size && !o->zone_range)
 422                 o->zone_range = o->zone_size;
 423
 424         /*
 425          * Reads can do overwrites, we always need to pre-create the file
 426          */
 427         if (td_read(td) || td_rw(td))
 428                 o->overwrite = 1;
 429
 430         if (!o->min_bs[DDIR_READ])
 431                 o->min_bs[DDIR_READ] = o->bs[DDIR_READ];
 432         if (!o->max_bs[DDIR_READ])
 433                 o->max_bs[DDIR_READ] = o->bs[DDIR_READ];
 434         if (!o->min_bs[DDIR_WRITE])
 435                 o->min_bs[DDIR_WRITE] = o->bs[DDIR_WRITE];
 436         if (!o->max_bs[DDIR_WRITE])
 437                 o->max_bs[DDIR_WRITE] = o->bs[DDIR_WRITE];
 438
 439         o->rw_min_bs = min(o->min_bs[DDIR_READ], o->min_bs[DDIR_WRITE]);
 440
 441         /*
 442          * For random IO, allow blockalign offset other than min_bs.
 443          */
 444         if (!o->ba[DDIR_READ] || !td_random(td))
 445                 o->ba[DDIR_READ] = o->min_bs[DDIR_READ];
 446         if (!o->ba[DDIR_WRITE] || !td_random(td))
 447                 o->ba[DDIR_WRITE] = o->min_bs[DDIR_WRITE];
 448
 449         if ((o->ba[DDIR_READ] != o->min_bs[DDIR_READ] ||
 450             o->ba[DDIR_WRITE] != o->min_bs[DDIR_WRITE]) &&
 451             !o->norandommap) {
 452                 log_err("fio: Any use of blockalign= turns off randommap\n");
 453                 o->norandommap = 1;
 454                 ret = warnings_fatal;
 455         }
 456
 457         if (!o->file_size_high)
 458                 o->file_size_high = o->file_size_low;
 459
 460         if (o->norandommap && o->verify != VERIFY_NONE
 461             && !fixed_block_size(o))  {
 462                 log_err("fio: norandommap given for variable block sizes, "
 463                         "verify disabled\n");
 464                 o->verify = VERIFY_NONE;
 465                 ret = warnings_fatal;
 466         }
 467         if (o->bs_unaligned && (o->odirect || td->io_ops->flags & FIO_RAWIO))
 468                 log_err("fio: bs_unaligned may not work with raw io\n");
 469
 470         /*
 471          * thinktime_spin must be less than thinktime
 472          */
 473         if (o->thinktime_spin > o->thinktime)
 474                 o->thinktime_spin = o->thinktime;
 475
 476         /*
 477          * The low water mark cannot be bigger than the iodepth
 478          */
 479         if (o->iodepth_low > o->iodepth || !o->iodepth_low) {
 480                 /*
 481                  * syslet work around - if the workload is sequential,
 482                  * we want to let the queue drain all the way down to
 483                  * avoid seeking between async threads
 484                  */
 485                 if (!strcmp(td->io_ops->name, "syslet-rw") && !td_random(td))
 486                         o->iodepth_low = 1;
 487                 else
 488                         o->iodepth_low = o->iodepth;
 489         }
 490
 491         /*
 492          * If batch number isn't set, default to the same as iodepth
 493          */
 494         if (o->iodepth_batch > o->iodepth || !o->iodepth_batch)
 495                 o->iodepth_batch = o->iodepth;
 496
 497         if (o->nr_files > td->files_index)
 498                 o->nr_files = td->files_index;
 499
 500         if (o->open_files > o->nr_files || !o->open_files)
 501                 o->open_files = o->nr_files;
 502
 503         if (((o->rate[0] + o->rate[1]) && (o->rate_iops[0] + o->rate_iops[1]))||
 504             ((o->ratemin[0] + o->ratemin[1]) && (o->rate_iops_min[0] +
 505                 o->rate_iops_min[1]))) {
 506                 log_err("fio: rate and rate_iops are mutually exclusive\n");
 507                 ret = 1;
 508         }
 509         if ((o->rate[0] < o->ratemin[0]) || (o->rate[1] < o->ratemin[1]) ||
 510             (o->rate_iops[0] < o->rate_iops_min[0]) ||
 511             (o->rate_iops[1] < o->rate_iops_min[1])) {
 512                 log_err("fio: minimum rate exceeds rate\n");
 513                 ret = 1;
 514         }
 515
 516         if (!o->timeout && o->time_based) {
 517                 log_err("fio: time_based requires a runtime/timeout setting\n");
 518                 o->time_based = 0;
 519                 ret = warnings_fatal;
 520         }
 521
 522         if (o->fill_device && !o->size)
 523                 o->size = -1ULL;
 524
 525         if (o->verify != VERIFY_NONE) {
 526                 if (td_write(td) && o->do_verify && o->numjobs > 1) {
 527                         log_info("Multiple writers may overwrite blocks that "
 528                                 "belong to other jobs. This can cause "
 529                                 "verification failures.\n");
 530                         ret = warnings_fatal;
 531                 }
 532
 533                 o->refill_buffers = 1;
 534                 if (o->max_bs[DDIR_WRITE] != o->min_bs[DDIR_WRITE] &&
 535                     !o->verify_interval)
 536                         o->verify_interval = o->min_bs[DDIR_WRITE];
 537         }
 538
 539         if (o->pre_read) {
 540                 o->invalidate_cache = 0;
 541                 if (td->io_ops->flags & FIO_PIPEIO) {
 542                         log_info("fio: cannot pre-read files with an IO engine"
 543                                  " that isn't seekable. Pre-read disabled.\n");
 544                         ret = warnings_fatal;
 545                 }
 546         }
 547
 548 #ifndef FIO_HAVE_FDATASYNC
 549         if (o->fdatasync_blocks) {
 550                 log_info("fio: this platform does not support fdatasync()"
 551                          " falling back to using fsync().  Use the 'fsync'"
 552                          " option instead of 'fdatasync' to get rid of"
 553                          " this warning\n");
 554                 o->fsync_blocks = o->fdatasync_blocks;
 555                 o->fdatasync_blocks = 0;
 556                 ret = warnings_fatal;
 557         }
 558 #endif
 559
 560 #ifdef WIN32
 561         /*
 562          * Windows doesn't support O_DIRECT or O_SYNC with the _open interface,
 563          * so fail if we're passed those flags
 564          */
 565         if ((td->io_ops->flags & FIO_SYNCIO) && (td->o.odirect || td->o.sync_io)) {
 566                 log_err("fio: Windows does not support direct or non-buffered io with"
 567                                 " the synchronous ioengines. Use the 'windowsaio' ioengine"
 568                                 " with 'direct=1' and 'iodepth=1' instead.\n");
 569                 ret = 1;
 570         }
 571 #endif
 572
 573         /*
 574          * For fully compressible data, just zero them at init time.
 575          * It's faster than repeatedly filling it.
 576          */
 577         if (td->o.compress_percentage == 100) {
 578                 td->o.zero_buffers = 1;
 579                 td->o.compress_percentage = 0;
 580         }
 581
 582         return ret;
 583 }
 584
 585 /*
 586  * This function leaks the buffer
 587  */
 588 char *fio_uint_to_kmg(unsigned int val)
 589 {
 590         char *buf = malloc(32);
 591         char post[] = { 0, 'K', 'M', 'G', 'P', 'E', 0 };
 592         char *p = post;
 593
 594         do {
 595                 if (val & 1023)
 596                         break;
 597
 598                 val >>= 10;
 599                 p++;
 600         } while (*p);
 601
 602         snprintf(buf, 31, "%u%c", val, *p);
 603         return buf;
 604 }
 605
 606 /* External engines are specified by "external:name.o") */
 607 static const char *get_engine_name(const char *str)
 608 {
 609         char *p = strstr(str, ":");
 610
 611         if (!p)
 612                 return str;
 613
 614         p++;
 615         strip_blank_front(&p);
 616         strip_blank_end(p);
 617         return p;
 618 }
 619
 620 static int exists_and_not_file(const char *filename)
 621 {
 622         struct stat sb;
 623
 624         if (lstat(filename, &sb) == -1)
 625                 return 0;
 626
 627         /* \\.\ is the device namespace in Windows, where every file
 628          * is a device node */
 629         if (S_ISREG(sb.st_mode) && strncmp(filename, "\\\\.\\", 4) != 0)
 630                 return 0;
 631
 632         return 1;
 633 }
 634
 635 static void td_fill_rand_seeds_os(struct thread_data *td)
 636 {
 637         os_random_seed(td->rand_seeds[0], &td->bsrange_state);
 638         os_random_seed(td->rand_seeds[1], &td->verify_state);
 639         os_random_seed(td->rand_seeds[2], &td->rwmix_state);
 640
 641         if (td->o.file_service_type == FIO_FSERVICE_RANDOM)
 642                 os_random_seed(td->rand_seeds[3], &td->next_file_state);
 643
 644         os_random_seed(td->rand_seeds[5], &td->file_size_state);
 645         os_random_seed(td->rand_seeds[6], &td->trim_state);
 646
 647         if (!td_random(td))
 648                 return;
 649
 650         if (td->o.rand_repeatable)
 651                 td->rand_seeds[4] = FIO_RANDSEED * td->thread_number;
 652
 653         os_random_seed(td->rand_seeds[4], &td->random_state);
 654 }
 655
 656 static void td_fill_rand_seeds_internal(struct thread_data *td)
 657 {
 658         init_rand_seed(&td->__bsrange_state, td->rand_seeds[0]);
 659         init_rand_seed(&td->__verify_state, td->rand_seeds[1]);
 660         init_rand_seed(&td->__rwmix_state, td->rand_seeds[2]);
 661
 662         if (td->o.file_service_type == FIO_FSERVICE_RANDOM)
 663                 init_rand_seed(&td->__next_file_state, td->rand_seeds[3]);
 664
 665         init_rand_seed(&td->__file_size_state, td->rand_seeds[5]);
 666         init_rand_seed(&td->__trim_state, td->rand_seeds[6]);
 667
 668         if (!td_random(td))
 669                 return;
 670
 671         if (td->o.rand_repeatable)
 672                 td->rand_seeds[4] = FIO_RANDSEED * td->thread_number;
 673
 674         init_rand_seed(&td->__random_state, td->rand_seeds[4]);
 675 }
 676
 677 void td_fill_rand_seeds(struct thread_data *td)
 678 {
 679         if (td->o.use_os_rand)
 680                 td_fill_rand_seeds_os(td);
 681         else
 682                 td_fill_rand_seeds_internal(td);
 683
 684         init_rand_seed(&td->buf_state, td->rand_seeds[7]);
 685 }
 686
 687
 688 /*
 689  * Initializes the ioengine configured for a job, if it has not been done so
 690  * already.
 691  */
 692 int ioengine_load(struct thread_data *td)
 693 {
 694         const char *engine;
 695
 696         /*
 697          * Engine has already been loaded.
 698          */
 699         if (td->io_ops)
 700                 return 0;
 701
 702         engine = get_engine_name(td->o.ioengine);
 703         td->io_ops = load_ioengine(td, engine);
 704         if (!td->io_ops) {
 705                 log_err("fio: failed to load engine %s\n", engine);
 706                 return 1;
 707         }
 708
 709         if (td->io_ops->option_struct_size && td->io_ops->options) {
 710                 /*
 711                  * In cases where td->eo is set, clone it for a child thread.
 712                  * This requires that the parent thread has the same ioengine,
 713                  * but that requirement must be enforced by the code which
 714                  * cloned the thread.
 715                  */
 716                 void *origeo = td->eo;
 717                 /*
 718                  * Otherwise use the default thread options.
 719                  */
 720                 if (!origeo && td != &def_thread && def_thread.eo &&
 721                     def_thread.io_ops->options == td->io_ops->options)
 722                         origeo = def_thread.eo;
 723
 724                 options_init(td->io_ops->options);
 725                 td->eo = malloc(td->io_ops->option_struct_size);
 726                 /*
 727                  * Use the default thread as an option template if this uses the
 728                  * same options structure and there are non-default options
 729                  * used.
 730                  */
 731                 if (origeo) {
 732                         memcpy(td->eo, origeo, td->io_ops->option_struct_size);
 733                         options_mem_dupe(td->eo, td->io_ops->options);
 734                 } else {
 735                         memset(td->eo, 0, td->io_ops->option_struct_size);
 736                         fill_default_options(td->eo, td->io_ops->options);
 737                 }
 738                 *(struct thread_data **)td->eo = td;
 739         }
 740
 741         return 0;
 742 }
 743
 744 /*
 745  * Adds a job to the list of things todo. Sanitizes the various options
 746  * to make sure we don't have conflicts, and initializes various
 747  * members of td.
 748  */
 749 static int add_job(struct thread_data *td, const char *jobname, int job_add_num,
 750                    int recursed, int client_type)
 751 {
 752         unsigned int i;
 753         char fname[PATH_MAX];
 754         int numjobs, file_alloced;
 755
 756         /*
 757          * the def_thread is just for options, it's not a real job
 758          */
 759         if (td == &def_thread)
 760                 return 0;
 761
 762         /*
 763          * if we are just dumping the output command line, don't add the job
 764          */
 765         if (dump_cmdline) {
 766                 put_job(td);
 767                 return 0;
 768         }
 769
 770         td->client_type = client_type;
 771
 772         if (profile_td_init(td))
 773                 goto err;
 774
 775         if (ioengine_load(td))
 776                 goto err;
 777
 778         if (td->o.use_thread)
 779                 nr_thread++;
 780         else
 781                 nr_process++;
 782
 783         if (td->o.odirect)
 784                 td->io_ops->flags |= FIO_RAWIO;
 785
 786         file_alloced = 0;
 787         if (!td->o.filename && !td->files_index && !td->o.read_iolog_file) {
 788                 file_alloced = 1;
 789
 790                 if (td->o.nr_files == 1 && exists_and_not_file(jobname))
 791                         add_file(td, jobname);
 792                 else {
 793                         for (i = 0; i < td->o.nr_files; i++) {
 794                                 sprintf(fname, "%s.%d.%d", jobname,
 795                                                         td->thread_number, i);
 796                                 add_file(td, fname);
 797                         }
 798                 }
 799         }
 800
 801         if (fixup_options(td))
 802                 goto err;
 803
 804         flow_init_job(td);
 805
 806         /*
 807          * IO engines only need this for option callbacks, and the address may
 808          * change in subprocesses.
 809          */
 810         if (td->eo)
 811                 *(struct thread_data **)td->eo = NULL;
 812
 813         if (td->io_ops->flags & FIO_DISKLESSIO) {
 814                 struct fio_file *f;
 815
 816                 for_each_file(td, f, i)
 817                         f->real_file_size = -1ULL;
 818         }
 819
 820         td->mutex = fio_mutex_init(0);
 821
 822         td->ts.clat_percentiles = td->o.clat_percentiles;
 823         if (td->o.overwrite_plist)
 824                 memcpy(td->ts.percentile_list, td->o.percentile_list, sizeof(td->o.percentile_list));
 825         else
 826                 memcpy(td->ts.percentile_list, def_percentile_list, sizeof(def_percentile_list));
 827
 828         td->ts.clat_stat[0].min_val = td->ts.clat_stat[1].min_val = ULONG_MAX;
 829         td->ts.slat_stat[0].min_val = td->ts.slat_stat[1].min_val = ULONG_MAX;
 830         td->ts.lat_stat[0].min_val = td->ts.lat_stat[1].min_val = ULONG_MAX;
 831         td->ts.bw_stat[0].min_val = td->ts.bw_stat[1].min_val = ULONG_MAX;
 832         td->ddir_seq_nr = td->o.ddir_seq_nr;
 833
 834         if ((td->o.stonewall || td->o.new_group) && prev_group_jobs) {
 835                 prev_group_jobs = 0;
 836                 groupid++;
 837         }
 838
 839         td->groupid = groupid;
 840         prev_group_jobs++;
 841
 842         if (init_random_state(td, td->rand_seeds, sizeof(td->rand_seeds))) {
 843                 td_verror(td, errno, "init_random_state");
 844                 goto err;
 845         }
 846
 847         if (setup_rate(td))
 848                 goto err;
 849
 850         if (td->o.write_lat_log) {
 851                 setup_log(&td->lat_log, td->o.log_avg_msec, IO_LOG_TYPE_LAT);
 852                 setup_log(&td->slat_log, td->o.log_avg_msec, IO_LOG_TYPE_SLAT);
 853                 setup_log(&td->clat_log, td->o.log_avg_msec, IO_LOG_TYPE_CLAT);
 854         }
 855         if (td->o.write_bw_log)
 856                 setup_log(&td->bw_log, td->o.log_avg_msec, IO_LOG_TYPE_BW);
 857         if (td->o.write_iops_log)
 858                 setup_log(&td->iops_log, td->o.log_avg_msec, IO_LOG_TYPE_IOPS);
 859
 860         if (!td->o.name)
 861                 td->o.name = strdup(jobname);
 862
 863         if (!terse_output) {
 864                 if (!job_add_num) {
 865                         if (is_backend && !recursed)
 866                                 fio_server_send_add_job(td);
 867
 868                         if (!strcmp(td->io_ops->name, "cpuio")) {
 869                                 log_info("%s: ioengine=cpu, cpuload=%u,"
 870                                          " cpucycle=%u\n", td->o.name,
 871                                                         td->o.cpuload,
 872                                                         td->o.cpucycle);
 873                         } else {
 874                                 char *c1, *c2, *c3, *c4;
 875
 876                                 c1 = fio_uint_to_kmg(td->o.min_bs[DDIR_READ]);
 877                                 c2 = fio_uint_to_kmg(td->o.max_bs[DDIR_READ]);
 878                                 c3 = fio_uint_to_kmg(td->o.min_bs[DDIR_WRITE]);
 879                                 c4 = fio_uint_to_kmg(td->o.max_bs[DDIR_WRITE]);
 880
 881                                 log_info("%s: (g=%d): rw=%s, bs=%s-%s/%s-%s,"
 882                                          " ioengine=%s, iodepth=%u\n",
 883                                                 td->o.name, td->groupid,
 884                                                 ddir_str(td->o.td_ddir),
 885                                                 c1, c2, c3, c4,
 886                                                 td->io_ops->name,
 887                                                 td->o.iodepth);
 888
 889                                 free(c1);
 890                                 free(c2);
 891                                 free(c3);
 892                                 free(c4);
 893                         }
 894                 } else if (job_add_num == 1)
 895                         log_info("...\n");
 896         }
 897
 898         /*
 899          * recurse add identical jobs, clear numjobs and stonewall options
 900          * as they don't apply to sub-jobs
 901          */
 902         numjobs = td->o.numjobs;
 903         while (--numjobs) {
 904                 struct thread_data *td_new = get_new_job(0, td, 1);
 905
 906                 if (!td_new)
 907                         goto err;
 908
 909                 td_new->o.numjobs = 1;
 910                 td_new->o.stonewall = 0;
 911                 td_new->o.new_group = 0;
 912
 913                 if (file_alloced) {
 914                         td_new->o.filename = NULL;
 915                         td_new->files_index = 0;
 916                         td_new->files_size = 0;
 917                         td_new->files = NULL;
 918                 }
 919
 920                 job_add_num = numjobs - 1;
 921
 922                 if (add_job(td_new, jobname, job_add_num, 1, client_type))
 923                         goto err;
 924         }
 925
 926         return 0;
 927 err:
 928         put_job(td);
 929         return -1;
 930 }
 931
 932 /*
 933  * Parse as if 'o' was a command line
 934  */
 935 void add_job_opts(const char **o, int client_type)
 936 {
 937         struct thread_data *td, *td_parent;
 938         int i, in_global = 1;
 939         char jobname[32];
 940
 941         i = 0;
 942         td_parent = td = NULL;
 943         while (o[i]) {
 944                 if (!strncmp(o[i], "name", 4)) {
 945                         in_global = 0;
 946                         if (td)
 947                                 add_job(td, jobname, 0, 0, client_type);
 948                         td = NULL;
 949                         sprintf(jobname, "%s", o[i] + 5);
 950                 }
 951                 if (in_global && !td_parent)
 952                         td_parent = get_new_job(1, &def_thread, 0);
 953                 else if (!in_global && !td) {
 954                         if (!td_parent)
 955                                 td_parent = &def_thread;
 956                         td = get_new_job(0, td_parent, 0);
 957                 }
 958                 if (in_global)
 959                         fio_options_parse(td_parent, (char **) &o[i], 1);
 960                 else
 961                         fio_options_parse(td, (char **) &o[i], 1);
 962                 i++;
 963         }
 964
 965         if (td)
 966                 add_job(td, jobname, 0, 0, client_type);
 967 }
 968
 969 static int skip_this_section(const char *name)
 970 {
 971         int i;
 972
 973         if (!nr_job_sections)
 974                 return 0;
 975         if (!strncmp(name, "global", 6))
 976                 return 0;
 977
 978         for (i = 0; i < nr_job_sections; i++)
 979                 if (!strcmp(job_sections[i], name))
 980                         return 0;
 981
 982         return 1;
 983 }
 984
 985 static int is_empty_or_comment(char *line)
 986 {
 987         unsigned int i;
 988
 989         for (i = 0; i < strlen(line); i++) {
 990                 if (line[i] == ';')
 991                         return 1;
 992                 if (line[i] == '#')
 993                         return 1;
 994                 if (!isspace((int) line[i]) && !iscntrl((int) line[i]))
 995                         return 0;
 996         }
 997
 998         return 1;
 999 }
1000
1001 /*
1002  * This is our [ini] type file parser.
1003  */
1004 int parse_jobs_ini(char *file, int is_buf, int stonewall_flag, int type)
1005 {
1006         unsigned int global;
1007         struct thread_data *td;
1008         char *string, *name;
1009         FILE *f;
1010         char *p;
1011         int ret = 0, stonewall;
1012         int first_sect = 1;
1013         int skip_fgets = 0;
1014         int inside_skip = 0;
1015         char **opts;
1016         int i, alloc_opts, num_opts;
1017
1018         if (is_buf)
1019                 f = NULL;
1020         else {
1021                 if (!strcmp(file, "-"))
1022                         f = stdin;
1023                 else
1024                         f = fopen(file, "r");
1025
1026                 if (!f) {
1027                         perror("fopen job file");
1028                         return 1;
1029                 }
1030         }
1031
1032         string = malloc(4096);
1033
1034         /*
1035          * it's really 256 + small bit, 280 should suffice
1036          */
1037         name = malloc(280);
1038         memset(name, 0, 280);
1039
1040         alloc_opts = 8;
1041         opts = malloc(sizeof(char *) * alloc_opts);
1042         num_opts = 0;
1043
1044         stonewall = stonewall_flag;
1045         do {
1046                 /*
1047                  * if skip_fgets is set, we already have loaded a line we
1048                  * haven't handled.
1049                  */
1050                 if (!skip_fgets) {
1051                         if (is_buf)
1052                                 p = strsep(&file, "\n");
1053                         else
1054                                 p = fgets(string, 4096, f);
1055                         if (!p)
1056                                 break;
1057                 }
1058
1059                 skip_fgets = 0;
1060                 strip_blank_front(&p);
1061                 strip_blank_end(p);
1062
1063                 if (is_empty_or_comment(p))
1064                         continue;
1065                 if (sscanf(p, "[%255[^\n]]", name) != 1) {
1066                         if (inside_skip)
1067                                 continue;
1068                         log_err("fio: option <%s> outside of [] job section\n",
1069                                                                         p);
1070                         break;
1071                 }
1072
1073                 name[strlen(name) - 1] = '\0';
1074
1075                 if (skip_this_section(name)) {
1076                         inside_skip = 1;
1077                         continue;
1078                 } else
1079                         inside_skip = 0;
1080
1081                 global = !strncmp(name, "global", 6);
1082
1083                 if (dump_cmdline) {
1084                         if (first_sect)
1085                                 log_info("fio ");
1086                         if (!global)
1087                                 log_info("--name=%s ", name);
1088                         first_sect = 0;
1089                 }
1090
1091                 td = get_new_job(global, &def_thread, 0);
1092                 if (!td) {
1093                         ret = 1;
1094                         break;
1095                 }
1096
1097                 /*
1098                  * Seperate multiple job files by a stonewall
1099                  */
1100                 if (!global && stonewall) {
1101                         td->o.stonewall = stonewall;
1102                         stonewall = 0;
1103                 }
1104
1105                 num_opts = 0;
1106                 memset(opts, 0, alloc_opts * sizeof(char *));
1107
1108                 while (1) {
1109                         if (is_buf)
1110                                 p = strsep(&file, "\n");
1111                         else
1112                                 p = fgets(string, 4096, f);
1113                         if (!p)
1114                                 break;
1115
1116                         if (is_empty_or_comment(p))
1117                                 continue;
1118
1119                         strip_blank_front(&p);
1120
1121                         /*
1122                          * new section, break out and make sure we don't
1123                          * fgets() a new line at the top.
1124                          */
1125                         if (p[0] == '[') {
1126                                 skip_fgets = 1;
1127                                 break;
1128                         }
1129
1130                         strip_blank_end(p);
1131
1132                         if (num_opts == alloc_opts) {
1133                                 alloc_opts <<= 1;
1134                                 opts = realloc(opts,
1135                                                 alloc_opts * sizeof(char *));
1136                         }
1137
1138                         opts[num_opts] = strdup(p);
1139                         num_opts++;
1140                 }
1141
1142                 ret = fio_options_parse(td, opts, num_opts);
1143                 if (!ret) {
1144                         if (dump_cmdline)
1145                                 for (i = 0; i < num_opts; i++)
1146                                         log_info("--%s ", opts[i]);
1147
1148                         ret = add_job(td, name, 0, 0, type);
1149                 } else {
1150                         log_err("fio: job %s dropped\n", name);
1151                         put_job(td);
1152                 }
1153
1154                 for (i = 0; i < num_opts; i++)
1155                         free(opts[i]);
1156                 num_opts = 0;
1157         } while (!ret);
1158
1159         if (dump_cmdline)
1160                 log_info("\n");
1161
1162         i = 0;
1163         while (i < nr_job_sections) {
1164                 free(job_sections[i]);
1165                 i++;
1166         }
1167
1168         for (i = 0; i < num_opts; i++)
1169                 free(opts[i]);
1170
1171         free(string);
1172         free(name);
1173         free(opts);
1174         if (!is_buf && f != stdin)
1175                 fclose(f);
1176         return ret;
1177 }
1178
1179 static int fill_def_thread(void)
1180 {
1181         memset(&def_thread, 0, sizeof(def_thread));
1182
1183         fio_getaffinity(getpid(), &def_thread.o.cpumask);
1184         def_thread.o.timeout = def_timeout;
1185
1186         /*
1187          * fill default options
1188          */
1189         fio_fill_default_options(&def_thread);
1190         return 0;
1191 }
1192
1193 static void usage(const char *name)
1194 {
1195         printf("fio %s\n", fio_version_string);
1196         printf("%s [options] [job options] <job file(s)>\n", name);
1197         printf("  --debug=options\tEnable debug logging. May be one/more of:\n"
1198                 "\t\t\tprocess,file,io,mem,blktrace,verify,random,parse,\n"
1199                 "\t\t\tdiskutil,job,mutex,profile,time,net\n");
1200         printf("  --output\t\tWrite output to file\n");
1201         printf("  --timeout\t\tRuntime in seconds\n");
1202         printf("  --latency-log\t\tGenerate per-job latency logs\n");
1203         printf("  --bandwidth-log\tGenerate per-job bandwidth logs\n");
1204         printf("  --minimal\t\tMinimal (terse) output\n");
1205         printf("  --version\t\tPrint version info and exit\n");
1206         printf("  --terse-version=x\tSet terse version output format to 'x'\n");
1207         printf("  --help\t\tPrint this page\n");
1208         printf("  --cmdhelp=cmd\t\tPrint command help, \"all\" for all of"
1209                 " them\n");
1210         printf("  --enghelp=engine\tPrint ioengine help, or list"
1211                 " available ioengines\n");
1212         printf("  --enghelp=engine,cmd\tPrint help for an ioengine"
1213                 " cmd\n");
1214         printf("  --showcmd\t\tTurn a job file into command line options\n");
1215         printf("  --eta=when\t\tWhen ETA estimate should be printed\n");
1216         printf("            \t\tMay be \"always\", \"never\" or \"auto\"\n");
1217         printf("  --readonly\t\tTurn on safety read-only checks, preventing"
1218                 " writes\n");
1219         printf("  --section=name\tOnly run specified section in job file\n");
1220         printf("  --alloc-size=kb\tSet smalloc pool to this size in kb"
1221                 " (def 1024)\n");
1222         printf("  --warnings-fatal\tFio parser warnings are fatal\n");
1223         printf("  --max-jobs=nr\t\tMaximum number of threads/processes to support\n");
1224         printf("  --server=args\t\tStart a backend fio server\n");
1225         printf("  --daemonize=pidfile\tBackground fio server, write pid to file\n");
1226         printf("  --client=hostname\tTalk to remote backend fio server at hostname\n");
1227         printf("\nFio was written by Jens Axboe <jens.axboe@oracle.com>");
1228         printf("\n                 Jens Axboe <jaxboe@fusionio.com>\n");
1229 }
1230
1231 #ifdef FIO_INC_DEBUG
1232 struct debug_level debug_levels[] = {
1233         { .name = "process",
1234           .help = "Process creation/exit logging",
1235           .shift = FD_PROCESS,
1236         },
1237         { .name = "file",
1238           .help = "File related action logging",
1239           .shift = FD_FILE,
1240         },
1241         { .name = "io",
1242           .help = "IO and IO engine action logging (offsets, queue, completions, etc)",
1243           .shift = FD_IO,
1244         },
1245         { .name = "mem",
1246           .help = "Memory allocation/freeing logging",
1247           .shift = FD_MEM,
1248         },
1249         { .name = "blktrace",
1250           .help = "blktrace action logging",
1251           .shift = FD_BLKTRACE,
1252         },
1253         { .name = "verify",
1254           .help = "IO verification action logging",
1255           .shift = FD_VERIFY,
1256         },
1257         { .name = "random",
1258           .help = "Random generation logging",
1259           .shift = FD_RANDOM,
1260         },
1261         { .name = "parse",
1262           .help = "Parser logging",
1263           .shift = FD_PARSE,
1264         },
1265         { .name = "diskutil",
1266           .help = "Disk utility logging actions",
1267           .shift = FD_DISKUTIL,
1268         },
1269         { .name = "job",
1270           .help = "Logging related to creating/destroying jobs",
1271           .shift = FD_JOB,
1272         },
1273         { .name = "mutex",
1274           .help = "Mutex logging",
1275           .shift = FD_MUTEX
1276         },
1277         { .name = "profile",
1278           .help = "Logging related to profiles",
1279           .shift = FD_PROFILE,
1280         },
1281         { .name = "time",
1282           .help = "Logging related to time keeping functions",
1283           .shift = FD_TIME,
1284         },
1285         { .name = "net",
1286           .help = "Network logging",
1287           .shift = FD_NET,
1288         },
1289         { .name = NULL, },
1290 };
1291
1292 static int set_debug(const char *string)
1293 {
1294         struct debug_level *dl;
1295         char *p = (char *) string;
1296         char *opt;
1297         int i;
1298
1299         if (!strcmp(string, "?") || !strcmp(string, "help")) {
1300                 log_info("fio: dumping debug options:");
1301                 for (i = 0; debug_levels[i].name; i++) {
1302                         dl = &debug_levels[i];
1303                         log_info("%s,", dl->name);
1304                 }
1305                 log_info("all\n");
1306                 return 1;
1307         }
1308
1309         while ((opt = strsep(&p, ",")) != NULL) {
1310                 int found = 0;
1311
1312                 if (!strncmp(opt, "all", 3)) {
1313                         log_info("fio: set all debug options\n");
1314                         fio_debug = ~0UL;
1315                         continue;
1316                 }
1317
1318                 for (i = 0; debug_levels[i].name; i++) {
1319                         dl = &debug_levels[i];
1320                         found = !strncmp(opt, dl->name, strlen(dl->name));
1321                         if (!found)
1322                                 continue;
1323
1324                         if (dl->shift == FD_JOB) {
1325                                 opt = strchr(opt, ':');
1326                                 if (!opt) {
1327                                         log_err("fio: missing job number\n");
1328                                         break;
1329                                 }
1330                                 opt++;
1331                                 fio_debug_jobno = atoi(opt);
1332                                 log_info("fio: set debug jobno %d\n",
1333                                                         fio_debug_jobno);
1334                         } else {
1335                                 log_info("fio: set debug option %s\n", opt);
1336                                 fio_debug |= (1UL << dl->shift);
1337                         }
1338                         break;
1339                 }
1340
1341                 if (!found)
1342                         log_err("fio: debug mask %s not found\n", opt);
1343         }
1344         return 0;
1345 }
1346 #else
1347 static int set_debug(const char *string)
1348 {
1349         log_err("fio: debug tracing not included in build\n");
1350         return 1;
1351 }
1352 #endif
1353
1354 static void fio_options_fill_optstring(void)
1355 {
1356         char *ostr = cmd_optstr;
1357         int i, c;
1358
1359         c = i = 0;
1360         while (l_opts[i].name) {
1361                 ostr[c++] = l_opts[i].val;
1362                 if (l_opts[i].has_arg == required_argument)
1363                         ostr[c++] = ':';
1364                 else if (l_opts[i].has_arg == optional_argument) {
1365                         ostr[c++] = ':';
1366                         ostr[c++] = ':';
1367                 }
1368                 i++;
1369         }
1370         ostr[c] = '\0';
1371 }
1372
1373 static int client_flag_set(char c)
1374 {
1375         int i;
1376
1377         i = 0;
1378         while (l_opts[i].name) {
1379                 int val = l_opts[i].val;
1380
1381                 if (c == (val & 0xff))
1382                         return (val & FIO_CLIENT_FLAG);
1383
1384                 i++;
1385         }
1386
1387         return 0;
1388 }
1389
1390 void parse_cmd_client(void *client, char *opt)
1391 {
1392         fio_client_add_cmd_option(client, opt);
1393 }
1394
1395 int parse_cmd_line(int argc, char *argv[], int client_type)
1396 {
1397         struct thread_data *td = NULL;
1398         int c, ini_idx = 0, lidx, ret = 0, do_exit = 0, exit_val = 0;
1399         char *ostr = cmd_optstr;
1400         void *pid_file = NULL;
1401         void *cur_client = NULL;
1402         int backend = 0;
1403
1404         /*
1405          * Reset optind handling, since we may call this multiple times
1406          * for the backend.
1407          */
1408         optind = 1;
1409
1410         while ((c = getopt_long_only(argc, argv, ostr, l_opts, &lidx)) != -1) {
1411                 did_arg = 1;
1412
1413                 if ((c & FIO_CLIENT_FLAG) || client_flag_set(c)) {
1414                         parse_cmd_client(cur_client, argv[optind - 1]);
1415                         c &= ~FIO_CLIENT_FLAG;
1416                 }
1417
1418                 switch (c) {
1419                 case 'a':
1420                         smalloc_pool_size = atoi(optarg);
1421                         break;
1422                 case 't':
1423                         def_timeout = atoi(optarg);
1424                         break;
1425                 case 'l':
1426                         write_lat_log = 1;
1427                         break;
1428                 case 'b':
1429                         write_bw_log = 1;
1430                         break;
1431                 case 'o':
1432                         f_out = fopen(optarg, "w+");
1433                         if (!f_out) {
1434                                 perror("fopen output");
1435                                 exit(1);
1436                         }
1437                         f_err = f_out;
1438                         break;
1439                 case 'm':
1440                         terse_output = 1;
1441                         break;
1442                 case 'h':
1443                         if (!cur_client) {
1444                                 usage(argv[0]);
1445                                 do_exit++;
1446                         }
1447                         break;
1448                 case 'c':
1449                         if (!cur_client) {
1450                                 fio_show_option_help(optarg);
1451                                 do_exit++;
1452                         }
1453                         break;
1454                 case 'i':
1455                         if (!cur_client) {
1456                                 fio_show_ioengine_help(optarg);
1457                                 do_exit++;
1458                         }
1459                         break;
1460                 case 's':
1461                         dump_cmdline = 1;
1462                         break;
1463                 case 'r':
1464                         read_only = 1;
1465                         break;
1466                 case 'v':
1467                         if (!cur_client) {
1468                                 log_info("fio %s\n", fio_version_string);
1469                                 do_exit++;
1470                         }
1471                         break;
1472                 case 'V':
1473                         terse_version = atoi(optarg);
1474                         if (!(terse_version == 2 || terse_version == 3)) {
1475                                 log_err("fio: bad terse version format\n");
1476                                 exit_val = 1;
1477                                 do_exit++;
1478                         }
1479                         break;
1480                 case 'e':
1481                         if (!strcmp("always", optarg))
1482                                 eta_print = FIO_ETA_ALWAYS;
1483                         else if (!strcmp("never", optarg))
1484                                 eta_print = FIO_ETA_NEVER;
1485                         break;
1486                 case 'd':
1487                         if (set_debug(optarg))
1488                                 do_exit++;
1489                         break;
1490                 case 'x': {
1491                         size_t new_size;
1492
1493                         if (!strcmp(optarg, "global")) {
1494                                 log_err("fio: can't use global as only "
1495                                         "section\n");
1496                                 do_exit++;
1497                                 exit_val = 1;
1498                                 break;
1499                         }
1500                         new_size = (nr_job_sections + 1) * sizeof(char *);
1501                         job_sections = realloc(job_sections, new_size);
1502                         job_sections[nr_job_sections] = strdup(optarg);
1503                         nr_job_sections++;
1504                         break;
1505                         }
1506                 case 'p':
1507                         exec_profile = strdup(optarg);
1508                         break;
1509                 case FIO_GETOPT_JOB: {
1510                         const char *opt = l_opts[lidx].name;
1511                         char *val = optarg;
1512
1513                         if (!strncmp(opt, "name", 4) && td) {
1514                                 ret = add_job(td, td->o.name ?: "fio", 0, 0, client_type);
1515                                 if (ret)
1516                                         return 0;
1517                                 td = NULL;
1518                         }
1519                         if (!td) {
1520                                 int is_section = !strncmp(opt, "name", 4);
1521                                 int global = 0;
1522
1523                                 if (!is_section || !strncmp(val, "global", 6))
1524                                         global = 1;
1525
1526                                 if (is_section && skip_this_section(val))
1527                                         continue;
1528
1529                                 td = get_new_job(global, &def_thread, 1);
1530                                 if (!td || ioengine_load(td))
1531                                         return 0;
1532                                 fio_options_set_ioengine_opts(l_opts, td);
1533                         }
1534
1535                         ret = fio_cmd_option_parse(td, opt, val);
1536
1537                         if (!ret && !strcmp(opt, "ioengine")) {
1538                                 free_ioengine(td);
1539                                 if (ioengine_load(td))
1540                                         return 0;
1541                                 fio_options_set_ioengine_opts(l_opts, td);
1542                         }
1543                         break;
1544                 }
1545                 case FIO_GETOPT_IOENGINE: {
1546                         const char *opt = l_opts[lidx].name;
1547                         char *val = optarg;
1548                         opt = l_opts[lidx].name;
1549                         val = optarg;
1550                         ret = fio_cmd_ioengine_option_parse(td, opt, val);
1551                         break;
1552                 }
1553                 case 'w':
1554                         warnings_fatal = 1;
1555                         break;
1556                 case 'j':
1557                         max_jobs = atoi(optarg);
1558                         if (!max_jobs || max_jobs > REAL_MAX_JOBS) {
1559                                 log_err("fio: invalid max jobs: %d\n", max_jobs);
1560                                 do_exit++;
1561                                 exit_val = 1;
1562                         }
1563                         break;
1564                 case 'S':
1565                         if (nr_clients) {
1566                                 log_err("fio: can't be both client and server\n");
1567                                 do_exit++;
1568                                 exit_val = 1;
1569                                 break;
1570                         }
1571                         if (optarg)
1572                                 fio_server_set_arg(optarg);
1573                         is_backend = 1;
1574                         backend = 1;
1575                         break;
1576                 case 'D':
1577                         pid_file = strdup(optarg);
1578                         break;
1579                 case 'C':
1580                         if (is_backend) {
1581                                 log_err("fio: can't be both client and server\n");
1582                                 do_exit++;
1583                                 exit_val = 1;
1584                                 break;
1585                         }
1586                         if (fio_client_add(&fio_client_ops, optarg, &cur_client)) {
1587                                 log_err("fio: failed adding client %s\n", optarg);
1588                                 do_exit++;
1589                                 exit_val = 1;
1590                                 break;
1591                         }
1592                         break;
1593                 default:
1594                         do_exit++;
1595                         exit_val = 1;
1596                         break;
1597                 }
1598                 if (do_exit)
1599                         break;
1600         }
1601
1602         if (do_exit) {
1603                 if (exit_val && !(is_backend || nr_clients))
1604                         exit(exit_val);
1605         }
1606
1607         if (nr_clients && fio_clients_connect()) {
1608                 do_exit++;
1609                 exit_val = 1;
1610                 return -1;
1611         }
1612
1613         if (is_backend && backend)
1614                 return fio_start_server(pid_file);
1615
1616         if (td) {
1617                 if (!ret)
1618                         ret = add_job(td, td->o.name ?: "fio", 0, 0, client_type);
1619         }
1620
1621         while (!ret && optind < argc) {
1622                 ini_idx++;
1623                 ini_file = realloc(ini_file, ini_idx * sizeof(char *));
1624                 ini_file[ini_idx - 1] = strdup(argv[optind]);
1625                 optind++;
1626         }
1627
1628         return ini_idx;
1629 }
1630
1631 int fio_init_options(void)
1632 {
1633         f_out = stdout;
1634         f_err = stderr;
1635
1636         fio_options_fill_optstring();
1637         fio_options_dup_and_init(l_opts);
1638
1639         atexit(free_shm);
1640
1641         if (fill_def_thread())
1642                 return 1;
1643
1644         return 0;
1645 }
1646
1647 extern int fio_check_options(struct thread_options *);
1648
1649 int parse_options(int argc, char *argv[])
1650 {
1651         const int type = FIO_CLIENT_TYPE_CLI;
1652         int job_files, i;
1653
1654         if (fio_init_options())
1655                 return 1;
1656         if (fio_test_cconv(&def_thread.o))
1657                 log_err("fio: failed internal cconv test\n");
1658
1659         job_files = parse_cmd_line(argc, argv, type);
1660
1661         if (job_files > 0) {
1662                 for (i = 0; i < job_files; i++) {
1663                         if (fill_def_thread())
1664                                 return 1;
1665                         if (nr_clients) {
1666                                 if (fio_clients_send_ini(ini_file[i]))
1667                                         return 1;
1668                                 free(ini_file[i]);
1669                         } else if (!is_backend) {
1670                                 if (parse_jobs_ini(ini_file[i], 0, i, type))
1671                                         return 1;
1672                                 free(ini_file[i]);
1673                         }
1674                 }
1675         }
1676
1677         free(ini_file);
1678         fio_options_free(&def_thread);
1679
1680         if (!thread_number) {
1681                 if (dump_cmdline)
1682                         return 0;
1683                 if (exec_profile)
1684                         return 0;
1685                 if (is_backend || nr_clients)
1686                         return 0;
1687                 if (did_arg)
1688                         return 0;
1689
1690                 log_err("No jobs(s) defined\n\n");
1691
1692                 if (!did_arg) {
1693                         usage(argv[0]);
1694                         return 1;
1695                 }
1696
1697                 return 0;
1698         }
1699
1700         if (def_thread.o.gtod_offload) {
1701                 fio_gtod_init();
1702                 fio_gtod_offload = 1;
1703                 fio_gtod_cpu = def_thread.o.gtod_cpu;
1704         }
1705
1706         if (!terse_output)
1707                 log_info("fio %s\n", fio_version_string);
1708
1709         return 0;
1710 }