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/types.h>
  13 #include <sys/stat.h>
  14
  15 #include "fio.h"
  16 #ifndef FIO_NO_HAVE_SHM_H
  17 #include <sys/shm.h>
  18 #endif
  19
  20 #include "parse.h"
  21 #include "smalloc.h"
  22 #include "filehash.h"
  23 #include "verify.h"
  24 #include "profile.h"
  25 #include "server.h"
  26 #include "idletime.h"
  27 #include "filelock.h"
  28 #include "steadystate.h"
  29
  30 #include "oslib/getopt.h"
  31 #include "oslib/strcasestr.h"
  32
  33 #include "crc/test.h"
  34 #include "lib/pow2.h"
  35
  36 const char fio_version_string[] = FIO_VERSION;
  37
  38 #define FIO_RANDSEED            (0xb1899bedUL)
  39
  40 static char **ini_file;
  41 static int max_jobs = FIO_MAX_JOBS;
  42 static int dump_cmdline;
  43 static int parse_only;
  44
  45 static struct thread_data def_thread;
  46 struct thread_data *threads = NULL;
  47 static char **job_sections;
  48 static int nr_job_sections;
  49
  50 int exitall_on_terminate = 0;
  51 int output_format = FIO_OUTPUT_NORMAL;
  52 int eta_print = FIO_ETA_AUTO;
  53 int eta_new_line = 0;
  54 FILE *f_out = NULL;
  55 FILE *f_err = NULL;
  56 char *exec_profile = NULL;
  57 int warnings_fatal = 0;
  58 int terse_version = 3;
  59 int is_backend = 0;
  60 int nr_clients = 0;
  61 int log_syslog = 0;
  62
  63 int write_bw_log = 0;
  64 int read_only = 0;
  65 int status_interval = 0;
  66
  67 char *trigger_file = NULL;
  68 long long trigger_timeout = 0;
  69 char *trigger_cmd = NULL;
  70 char *trigger_remote_cmd = NULL;
  71
  72 char *aux_path = NULL;
  73
  74 static int prev_group_jobs;
  75
  76 unsigned long fio_debug = 0;
  77 unsigned int fio_debug_jobno = -1;
  78 unsigned int *fio_debug_jobp = NULL;
  79
  80 static char cmd_optstr[256];
  81 static int did_arg;
  82
  83 #define FIO_CLIENT_FLAG         (1 << 16)
  84
  85 /*
  86  * Command line options. These will contain the above, plus a few
  87  * extra that only pertain to fio itself and not jobs.
  88  */
  89 static struct option l_opts[FIO_NR_OPTIONS] = {
  90         {
  91                 .name           = (char *) "output",
  92                 .has_arg        = required_argument,
  93                 .val            = 'o' | FIO_CLIENT_FLAG,
  94         },
  95         {
  96                 .name           = (char *) "latency-log",
  97                 .has_arg        = required_argument,
  98                 .val            = 'l' | FIO_CLIENT_FLAG,
  99         },
 100         {
 101                 .name           = (char *) "bandwidth-log",
 102                 .has_arg        = no_argument,
 103                 .val            = 'b' | FIO_CLIENT_FLAG,
 104         },
 105         {
 106                 .name           = (char *) "minimal",
 107                 .has_arg        = no_argument,
 108                 .val            = 'm' | FIO_CLIENT_FLAG,
 109         },
 110         {
 111                 .name           = (char *) "output-format",
 112                 .has_arg        = required_argument,
 113                 .val            = 'F' | FIO_CLIENT_FLAG,
 114         },
 115         {
 116                 .name           = (char *) "append-terse",
 117                 .has_arg        = optional_argument,
 118                 .val            = 'f',
 119         },
 120         {
 121                 .name           = (char *) "version",
 122                 .has_arg        = no_argument,
 123                 .val            = 'v' | FIO_CLIENT_FLAG,
 124         },
 125         {
 126                 .name           = (char *) "help",
 127                 .has_arg        = no_argument,
 128                 .val            = 'h' | FIO_CLIENT_FLAG,
 129         },
 130         {
 131                 .name           = (char *) "cmdhelp",
 132                 .has_arg        = optional_argument,
 133                 .val            = 'c' | FIO_CLIENT_FLAG,
 134         },
 135         {
 136                 .name           = (char *) "enghelp",
 137                 .has_arg        = optional_argument,
 138                 .val            = 'i' | FIO_CLIENT_FLAG,
 139         },
 140         {
 141                 .name           = (char *) "showcmd",
 142                 .has_arg        = no_argument,
 143                 .val            = 's' | FIO_CLIENT_FLAG,
 144         },
 145         {
 146                 .name           = (char *) "readonly",
 147                 .has_arg        = no_argument,
 148                 .val            = 'r' | FIO_CLIENT_FLAG,
 149         },
 150         {
 151                 .name           = (char *) "eta",
 152                 .has_arg        = required_argument,
 153                 .val            = 'e' | FIO_CLIENT_FLAG,
 154         },
 155         {
 156                 .name           = (char *) "eta-newline",
 157                 .has_arg        = required_argument,
 158                 .val            = 'E' | FIO_CLIENT_FLAG,
 159         },
 160         {
 161                 .name           = (char *) "debug",
 162                 .has_arg        = required_argument,
 163                 .val            = 'd' | FIO_CLIENT_FLAG,
 164         },
 165         {
 166                 .name           = (char *) "parse-only",
 167                 .has_arg        = no_argument,
 168                 .val            = 'P' | FIO_CLIENT_FLAG,
 169         },
 170         {
 171                 .name           = (char *) "section",
 172                 .has_arg        = required_argument,
 173                 .val            = 'x' | FIO_CLIENT_FLAG,
 174         },
 175 #ifdef CONFIG_ZLIB
 176         {
 177                 .name           = (char *) "inflate-log",
 178                 .has_arg        = required_argument,
 179                 .val            = 'X' | FIO_CLIENT_FLAG,
 180         },
 181 #endif
 182         {
 183                 .name           = (char *) "alloc-size",
 184                 .has_arg        = required_argument,
 185                 .val            = 'a' | FIO_CLIENT_FLAG,
 186         },
 187         {
 188                 .name           = (char *) "profile",
 189                 .has_arg        = required_argument,
 190                 .val            = 'p' | FIO_CLIENT_FLAG,
 191         },
 192         {
 193                 .name           = (char *) "warnings-fatal",
 194                 .has_arg        = no_argument,
 195                 .val            = 'w' | FIO_CLIENT_FLAG,
 196         },
 197         {
 198                 .name           = (char *) "max-jobs",
 199                 .has_arg        = required_argument,
 200                 .val            = 'j' | FIO_CLIENT_FLAG,
 201         },
 202         {
 203                 .name           = (char *) "terse-version",
 204                 .has_arg        = required_argument,
 205                 .val            = 'V' | FIO_CLIENT_FLAG,
 206         },
 207         {
 208                 .name           = (char *) "server",
 209                 .has_arg        = optional_argument,
 210                 .val            = 'S',
 211         },
 212         {       .name           = (char *) "daemonize",
 213                 .has_arg        = required_argument,
 214                 .val            = 'D',
 215         },
 216         {
 217                 .name           = (char *) "client",
 218                 .has_arg        = required_argument,
 219                 .val            = 'C',
 220         },
 221         {
 222                 .name           = (char *) "remote-config",
 223                 .has_arg        = required_argument,
 224                 .val            = 'R',
 225         },
 226         {
 227                 .name           = (char *) "cpuclock-test",
 228                 .has_arg        = no_argument,
 229                 .val            = 'T',
 230         },
 231         {
 232                 .name           = (char *) "crctest",
 233                 .has_arg        = optional_argument,
 234                 .val            = 'G',
 235         },
 236         {
 237                 .name           = (char *) "idle-prof",
 238                 .has_arg        = required_argument,
 239                 .val            = 'I',
 240         },
 241         {
 242                 .name           = (char *) "status-interval",
 243                 .has_arg        = required_argument,
 244                 .val            = 'L',
 245         },
 246         {
 247                 .name           = (char *) "trigger-file",
 248                 .has_arg        = required_argument,
 249                 .val            = 'W',
 250         },
 251         {
 252                 .name           = (char *) "trigger-timeout",
 253                 .has_arg        = required_argument,
 254                 .val            = 'B',
 255         },
 256         {
 257                 .name           = (char *) "trigger",
 258                 .has_arg        = required_argument,
 259                 .val            = 'H',
 260         },
 261         {
 262                 .name           = (char *) "trigger-remote",
 263                 .has_arg        = required_argument,
 264                 .val            = 'J',
 265         },
 266         {
 267                 .name           = (char *) "aux-path",
 268                 .has_arg        = required_argument,
 269                 .val            = 'K',
 270         },
 271         {
 272                 .name           = NULL,
 273         },
 274 };
 275
 276 void free_threads_shm(void)
 277 {
 278         if (threads) {
 279                 void *tp = threads;
 280 #ifndef CONFIG_NO_SHM
 281                 struct shmid_ds sbuf;
 282
 283                 threads = NULL;
 284                 shmdt(tp);
 285                 shmctl(shm_id, IPC_RMID, &sbuf);
 286                 shm_id = -1;
 287 #else
 288                 threads = NULL;
 289                 free(tp);
 290 #endif
 291         }
 292 }
 293
 294 static void free_shm(void)
 295 {
 296         if (threads) {
 297                 flow_exit();
 298                 fio_debug_jobp = NULL;
 299                 free_threads_shm();
 300         }
 301
 302         free(trigger_file);
 303         free(trigger_cmd);
 304         free(trigger_remote_cmd);
 305         trigger_file = trigger_cmd = trigger_remote_cmd = NULL;
 306
 307         options_free(fio_options, &def_thread.o);
 308         fio_filelock_exit();
 309         file_hash_exit();
 310         scleanup();
 311 }
 312
 313 /*
 314  * The thread area is shared between the main process and the job
 315  * threads/processes. So setup a shared memory segment that will hold
 316  * all the job info. We use the end of the region for keeping track of
 317  * open files across jobs, for file sharing.
 318  */
 319 static int setup_thread_area(void)
 320 {
 321         if (threads)
 322                 return 0;
 323
 324         /*
 325          * 1024 is too much on some machines, scale max_jobs if
 326          * we get a failure that looks like too large a shm segment
 327          */
 328         do {
 329                 size_t size = max_jobs * sizeof(struct thread_data);
 330
 331                 size += sizeof(unsigned int);
 332
 333 #ifndef CONFIG_NO_SHM
 334                 shm_id = shmget(0, size, IPC_CREAT | 0600);
 335                 if (shm_id != -1)
 336                         break;
 337                 if (errno != EINVAL && errno != ENOMEM && errno != ENOSPC) {
 338                         perror("shmget");
 339                         break;
 340                 }
 341 #else
 342                 threads = malloc(size);
 343                 if (threads)
 344                         break;
 345 #endif
 346
 347                 max_jobs >>= 1;
 348         } while (max_jobs);
 349
 350 #ifndef CONFIG_NO_SHM
 351         if (shm_id == -1)
 352                 return 1;
 353
 354         threads = shmat(shm_id, NULL, 0);
 355         if (threads == (void *) -1) {
 356                 perror("shmat");
 357                 return 1;
 358         }
 359         if (shm_attach_to_open_removed())
 360                 shmctl(shm_id, IPC_RMID, NULL);
 361 #endif
 362
 363         memset(threads, 0, max_jobs * sizeof(struct thread_data));
 364         fio_debug_jobp = (void *) threads + max_jobs * sizeof(struct thread_data);
 365         *fio_debug_jobp = -1;
 366
 367         flow_init();
 368
 369         return 0;
 370 }
 371
 372 static void dump_print_option(struct print_option *p)
 373 {
 374         const char *delim;
 375
 376         if (!strcmp("description", p->name))
 377                 delim = "\"";
 378         else
 379                 delim = "";
 380
 381         log_info("--%s%s", p->name, p->value ? "" : " ");
 382         if (p->value)
 383                 log_info("=%s%s%s ", delim, p->value, delim);
 384 }
 385
 386 static void dump_opt_list(struct thread_data *td)
 387 {
 388         struct flist_head *entry;
 389         struct print_option *p;
 390
 391         if (flist_empty(&td->opt_list))
 392                 return;
 393
 394         flist_for_each(entry, &td->opt_list) {
 395                 p = flist_entry(entry, struct print_option, list);
 396                 dump_print_option(p);
 397         }
 398 }
 399
 400 static void fio_dump_options_free(struct thread_data *td)
 401 {
 402         while (!flist_empty(&td->opt_list)) {
 403                 struct print_option *p;
 404
 405                 p = flist_first_entry(&td->opt_list, struct print_option, list);
 406                 flist_del_init(&p->list);
 407                 free(p->name);
 408                 free(p->value);
 409                 free(p);
 410         }
 411 }
 412
 413 static void copy_opt_list(struct thread_data *dst, struct thread_data *src)
 414 {
 415         struct flist_head *entry;
 416
 417         if (flist_empty(&src->opt_list))
 418                 return;
 419
 420         flist_for_each(entry, &src->opt_list) {
 421                 struct print_option *srcp, *dstp;
 422
 423                 srcp = flist_entry(entry, struct print_option, list);
 424                 dstp = malloc(sizeof(*dstp));
 425                 dstp->name = strdup(srcp->name);
 426                 if (srcp->value)
 427                         dstp->value = strdup(srcp->value);
 428                 else
 429                         dstp->value = NULL;
 430                 flist_add_tail(&dstp->list, &dst->opt_list);
 431         }
 432 }
 433
 434 /*
 435  * Return a free job structure.
 436  */
 437 static struct thread_data *get_new_job(bool global, struct thread_data *parent,
 438                                        bool preserve_eo, const char *jobname)
 439 {
 440         struct thread_data *td;
 441
 442         if (global)
 443                 return &def_thread;
 444         if (setup_thread_area()) {
 445                 log_err("error: failed to setup shm segment\n");
 446                 return NULL;
 447         }
 448         if (thread_number >= max_jobs) {
 449                 log_err("error: maximum number of jobs (%d) reached.\n",
 450                                 max_jobs);
 451                 return NULL;
 452         }
 453
 454         td = &threads[thread_number++];
 455         *td = *parent;
 456
 457         INIT_FLIST_HEAD(&td->opt_list);
 458         if (parent != &def_thread)
 459                 copy_opt_list(td, parent);
 460
 461         td->io_ops = NULL;
 462         td->io_ops_init = 0;
 463         if (!preserve_eo)
 464                 td->eo = NULL;
 465
 466         td->o.uid = td->o.gid = -1U;
 467
 468         dup_files(td, parent);
 469         fio_options_mem_dupe(td);
 470
 471         profile_add_hooks(td);
 472
 473         td->thread_number = thread_number;
 474         td->subjob_number = 0;
 475
 476         if (jobname)
 477                 td->o.name = strdup(jobname);
 478
 479         if (!parent->o.group_reporting || parent == &def_thread)
 480                 stat_number++;
 481
 482         return td;
 483 }
 484
 485 static void put_job(struct thread_data *td)
 486 {
 487         if (td == &def_thread)
 488                 return;
 489
 490         profile_td_exit(td);
 491         flow_exit_job(td);
 492
 493         if (td->error)
 494                 log_info("fio: %s\n", td->verror);
 495
 496         fio_options_free(td);
 497         fio_dump_options_free(td);
 498         if (td->io_ops)
 499                 free_ioengine(td);
 500
 501         if (td->o.name)
 502                 free(td->o.name);
 503
 504         memset(&threads[td->thread_number - 1], 0, sizeof(*td));
 505         thread_number--;
 506 }
 507
 508 static int __setup_rate(struct thread_data *td, enum fio_ddir ddir)
 509 {
 510         unsigned int bs = td->o.min_bs[ddir];
 511
 512         assert(ddir_rw(ddir));
 513
 514         if (td->o.rate[ddir])
 515                 td->rate_bps[ddir] = td->o.rate[ddir];
 516         else
 517                 td->rate_bps[ddir] = (uint64_t) td->o.rate_iops[ddir] * bs;
 518
 519         if (!td->rate_bps[ddir]) {
 520                 log_err("rate lower than supported\n");
 521                 return -1;
 522         }
 523
 524         td->rate_next_io_time[ddir] = 0;
 525         td->rate_io_issue_bytes[ddir] = 0;
 526         td->last_usec = 0;
 527         return 0;
 528 }
 529
 530 static int setup_rate(struct thread_data *td)
 531 {
 532         int ret = 0;
 533
 534         if (td->o.rate[DDIR_READ] || td->o.rate_iops[DDIR_READ])
 535                 ret = __setup_rate(td, DDIR_READ);
 536         if (td->o.rate[DDIR_WRITE] || td->o.rate_iops[DDIR_WRITE])
 537                 ret |= __setup_rate(td, DDIR_WRITE);
 538         if (td->o.rate[DDIR_TRIM] || td->o.rate_iops[DDIR_TRIM])
 539                 ret |= __setup_rate(td, DDIR_TRIM);
 540
 541         return ret;
 542 }
 543
 544 static int fixed_block_size(struct thread_options *o)
 545 {
 546         return o->min_bs[DDIR_READ] == o->max_bs[DDIR_READ] &&
 547                 o->min_bs[DDIR_WRITE] == o->max_bs[DDIR_WRITE] &&
 548                 o->min_bs[DDIR_TRIM] == o->max_bs[DDIR_TRIM] &&
 549                 o->min_bs[DDIR_READ] == o->min_bs[DDIR_WRITE] &&
 550                 o->min_bs[DDIR_READ] == o->min_bs[DDIR_TRIM];
 551 }
 552
 553
 554 static unsigned long long get_rand_start_delay(struct thread_data *td)
 555 {
 556         unsigned long long delayrange;
 557         uint64_t frand_max;
 558         unsigned long r;
 559
 560         delayrange = td->o.start_delay_high - td->o.start_delay;
 561
 562         frand_max = rand_max(&td->delay_state);
 563         r = __rand(&td->delay_state);
 564         delayrange = (unsigned long long) ((double) delayrange * (r / (frand_max + 1.0)));
 565
 566         delayrange += td->o.start_delay;
 567         return delayrange;
 568 }
 569
 570 /*
 571  * <3 Johannes
 572  */
 573 static unsigned int gcd(unsigned int m, unsigned int n)
 574 {
 575         if (!n)
 576                 return m;
 577
 578         return gcd(n, m % n);
 579 }
 580
 581 /*
 582  * Lazy way of fixing up options that depend on each other. We could also
 583  * define option callback handlers, but this is easier.
 584  */
 585 static int fixup_options(struct thread_data *td)
 586 {
 587         struct thread_options *o = &td->o;
 588         int ret = 0;
 589
 590 #ifndef CONFIG_PSHARED
 591         if (!o->use_thread) {
 592                 log_info("fio: this platform does not support process shared"
 593                          " mutexes, forcing use of threads. Use the 'thread'"
 594                          " option to get rid of this warning.\n");
 595                 o->use_thread = 1;
 596                 ret = warnings_fatal;
 597         }
 598 #endif
 599
 600         if (o->write_iolog_file && o->read_iolog_file) {
 601                 log_err("fio: read iolog overrides write_iolog\n");
 602                 free(o->write_iolog_file);
 603                 o->write_iolog_file = NULL;
 604                 ret = warnings_fatal;
 605         }
 606
 607         /*
 608          * only really works with 1 file
 609          */
 610         if (o->zone_size && o->open_files > 1)
 611                 o->zone_size = 0;
 612
 613         /*
 614          * If zone_range isn't specified, backward compatibility dictates it
 615          * should be made equal to zone_size.
 616          */
 617         if (o->zone_size && !o->zone_range)
 618                 o->zone_range = o->zone_size;
 619
 620         /*
 621          * Reads can do overwrites, we always need to pre-create the file
 622          */
 623         if (td_read(td))
 624                 o->overwrite = 1;
 625
 626         if (!o->min_bs[DDIR_READ])
 627                 o->min_bs[DDIR_READ] = o->bs[DDIR_READ];
 628         if (!o->max_bs[DDIR_READ])
 629                 o->max_bs[DDIR_READ] = o->bs[DDIR_READ];
 630         if (!o->min_bs[DDIR_WRITE])
 631                 o->min_bs[DDIR_WRITE] = o->bs[DDIR_WRITE];
 632         if (!o->max_bs[DDIR_WRITE])
 633                 o->max_bs[DDIR_WRITE] = o->bs[DDIR_WRITE];
 634         if (!o->min_bs[DDIR_TRIM])
 635                 o->min_bs[DDIR_TRIM] = o->bs[DDIR_TRIM];
 636         if (!o->max_bs[DDIR_TRIM])
 637                 o->max_bs[DDIR_TRIM] = o->bs[DDIR_TRIM];
 638
 639         o->rw_min_bs = min(o->min_bs[DDIR_READ], o->min_bs[DDIR_WRITE]);
 640         o->rw_min_bs = min(o->min_bs[DDIR_TRIM], o->rw_min_bs);
 641
 642         /*
 643          * For random IO, allow blockalign offset other than min_bs.
 644          */
 645         if (!o->ba[DDIR_READ] || !td_random(td))
 646                 o->ba[DDIR_READ] = o->min_bs[DDIR_READ];
 647         if (!o->ba[DDIR_WRITE] || !td_random(td))
 648                 o->ba[DDIR_WRITE] = o->min_bs[DDIR_WRITE];
 649         if (!o->ba[DDIR_TRIM] || !td_random(td))
 650                 o->ba[DDIR_TRIM] = o->min_bs[DDIR_TRIM];
 651
 652         if ((o->ba[DDIR_READ] != o->min_bs[DDIR_READ] ||
 653             o->ba[DDIR_WRITE] != o->min_bs[DDIR_WRITE] ||
 654             o->ba[DDIR_TRIM] != o->min_bs[DDIR_TRIM]) &&
 655             !o->norandommap) {
 656                 log_err("fio: Any use of blockalign= turns off randommap\n");
 657                 o->norandommap = 1;
 658                 ret = warnings_fatal;
 659         }
 660
 661         if (!o->file_size_high)
 662                 o->file_size_high = o->file_size_low;
 663
 664         if (o->start_delay_high)
 665                 o->start_delay = get_rand_start_delay(td);
 666
 667         if (o->norandommap && o->verify != VERIFY_NONE
 668             && !fixed_block_size(o))  {
 669                 log_err("fio: norandommap given for variable block sizes, "
 670                         "verify limited\n");
 671                 ret = warnings_fatal;
 672         }
 673         if (o->bs_unaligned && (o->odirect || td_ioengine_flagged(td, FIO_RAWIO)))
 674                 log_err("fio: bs_unaligned may not work with raw io\n");
 675
 676         /*
 677          * thinktime_spin must be less than thinktime
 678          */
 679         if (o->thinktime_spin > o->thinktime)
 680                 o->thinktime_spin = o->thinktime;
 681
 682         /*
 683          * The low water mark cannot be bigger than the iodepth
 684          */
 685         if (o->iodepth_low > o->iodepth || !o->iodepth_low)
 686                 o->iodepth_low = o->iodepth;
 687
 688         /*
 689          * If batch number isn't set, default to the same as iodepth
 690          */
 691         if (o->iodepth_batch > o->iodepth || !o->iodepth_batch)
 692                 o->iodepth_batch = o->iodepth;
 693
 694         /*
 695          * If max batch complete number isn't set or set incorrectly,
 696          * default to the same as iodepth_batch_complete_min
 697          */
 698         if (o->iodepth_batch_complete_min > o->iodepth_batch_complete_max)
 699                 o->iodepth_batch_complete_max = o->iodepth_batch_complete_min;
 700
 701         if (o->nr_files > td->files_index)
 702                 o->nr_files = td->files_index;
 703
 704         if (o->open_files > o->nr_files || !o->open_files)
 705                 o->open_files = o->nr_files;
 706
 707         if (((o->rate[DDIR_READ] + o->rate[DDIR_WRITE] + o->rate[DDIR_TRIM]) &&
 708             (o->rate_iops[DDIR_READ] + o->rate_iops[DDIR_WRITE] + o->rate_iops[DDIR_TRIM])) ||
 709             ((o->ratemin[DDIR_READ] + o->ratemin[DDIR_WRITE] + o->ratemin[DDIR_TRIM]) &&
 710             (o->rate_iops_min[DDIR_READ] + o->rate_iops_min[DDIR_WRITE] + o->rate_iops_min[DDIR_TRIM]))) {
 711                 log_err("fio: rate and rate_iops are mutually exclusive\n");
 712                 ret = 1;
 713         }
 714         if ((o->rate[DDIR_READ] && (o->rate[DDIR_READ] < o->ratemin[DDIR_READ])) ||
 715             (o->rate[DDIR_WRITE] && (o->rate[DDIR_WRITE] < o->ratemin[DDIR_WRITE])) ||
 716             (o->rate[DDIR_TRIM] && (o->rate[DDIR_TRIM] < o->ratemin[DDIR_TRIM])) ||
 717             (o->rate_iops[DDIR_READ] && (o->rate_iops[DDIR_READ] < o->rate_iops_min[DDIR_READ])) ||
 718             (o->rate_iops[DDIR_WRITE] && (o->rate_iops[DDIR_WRITE] < o->rate_iops_min[DDIR_WRITE])) ||
 719             (o->rate_iops[DDIR_TRIM] && (o->rate_iops[DDIR_TRIM] < o->rate_iops_min[DDIR_TRIM]))) {
 720                 log_err("fio: minimum rate exceeds rate\n");
 721                 ret = 1;
 722         }
 723
 724         if (!o->timeout && o->time_based) {
 725                 log_err("fio: time_based requires a runtime/timeout setting\n");
 726                 o->time_based = 0;
 727                 ret = warnings_fatal;
 728         }
 729
 730         if (o->fill_device && !o->size)
 731                 o->size = -1ULL;
 732
 733         if (o->verify != VERIFY_NONE) {
 734                 if (td_write(td) && o->do_verify && o->numjobs > 1) {
 735                         log_info("Multiple writers may overwrite blocks that "
 736                                 "belong to other jobs. This can cause "
 737                                 "verification failures.\n");
 738                         ret = warnings_fatal;
 739                 }
 740
 741                 if (!fio_option_is_set(o, refill_buffers))
 742                         o->refill_buffers = 1;
 743
 744                 if (o->max_bs[DDIR_WRITE] != o->min_bs[DDIR_WRITE] &&
 745                     !o->verify_interval)
 746                         o->verify_interval = o->min_bs[DDIR_WRITE];
 747
 748                 /*
 749                  * Verify interval must be smaller or equal to the
 750                  * write size.
 751                  */
 752                 if (o->verify_interval > o->min_bs[DDIR_WRITE])
 753                         o->verify_interval = o->min_bs[DDIR_WRITE];
 754                 else if (td_read(td) && o->verify_interval > o->min_bs[DDIR_READ])
 755                         o->verify_interval = o->min_bs[DDIR_READ];
 756
 757                 /*
 758                  * Verify interval must be a factor or both min and max
 759                  * write size
 760                  */
 761                 if (o->verify_interval % o->min_bs[DDIR_WRITE] ||
 762                     o->verify_interval % o->max_bs[DDIR_WRITE])
 763                         o->verify_interval = gcd(o->min_bs[DDIR_WRITE],
 764                                                         o->max_bs[DDIR_WRITE]);
 765         }
 766
 767         if (o->pre_read) {
 768                 if (o->invalidate_cache)
 769                         o->invalidate_cache = 0;
 770                 if (td_ioengine_flagged(td, FIO_PIPEIO)) {
 771                         log_info("fio: cannot pre-read files with an IO engine"
 772                                  " that isn't seekable. Pre-read disabled.\n");
 773                         ret = warnings_fatal;
 774                 }
 775         }
 776
 777         if (!o->unit_base) {
 778                 if (td_ioengine_flagged(td, FIO_BIT_BASED))
 779                         o->unit_base = 1;
 780                 else
 781                         o->unit_base = 8;
 782         }
 783
 784 #ifndef CONFIG_FDATASYNC
 785         if (o->fdatasync_blocks) {
 786                 log_info("fio: this platform does not support fdatasync()"
 787                          " falling back to using fsync().  Use the 'fsync'"
 788                          " option instead of 'fdatasync' to get rid of"
 789                          " this warning\n");
 790                 o->fsync_blocks = o->fdatasync_blocks;
 791                 o->fdatasync_blocks = 0;
 792                 ret = warnings_fatal;
 793         }
 794 #endif
 795
 796 #ifdef WIN32
 797         /*
 798          * Windows doesn't support O_DIRECT or O_SYNC with the _open interface,
 799          * so fail if we're passed those flags
 800          */
 801         if (td_ioengine_flagged(td, FIO_SYNCIO) && (td->o.odirect || td->o.sync_io)) {
 802                 log_err("fio: Windows does not support direct or non-buffered io with"
 803                                 " the synchronous ioengines. Use the 'windowsaio' ioengine"
 804                                 " with 'direct=1' and 'iodepth=1' instead.\n");
 805                 ret = 1;
 806         }
 807 #endif
 808
 809         /*
 810          * For fully compressible data, just zero them at init time.
 811          * It's faster than repeatedly filling it. For non-zero
 812          * compression, we should have refill_buffers set. Set it, unless
 813          * the job file already changed it.
 814          */
 815         if (o->compress_percentage) {
 816                 if (o->compress_percentage == 100) {
 817                         o->zero_buffers = 1;
 818                         o->compress_percentage = 0;
 819                 } else if (!fio_option_is_set(o, refill_buffers))
 820                         o->refill_buffers = 1;
 821         }
 822
 823         /*
 824          * Using a non-uniform random distribution excludes usage of
 825          * a random map
 826          */
 827         if (td->o.random_distribution != FIO_RAND_DIST_RANDOM)
 828                 td->o.norandommap = 1;
 829
 830         /*
 831          * If size is set but less than the min block size, complain
 832          */
 833         if (o->size && o->size < td_min_bs(td)) {
 834                 log_err("fio: size too small, must not be less than minimum block size: %llu < %u\n",
 835                         (unsigned long long) o->size, td_min_bs(td));
 836                 ret = 1;
 837         }
 838
 839         /*
 840          * O_ATOMIC implies O_DIRECT
 841          */
 842         if (td->o.oatomic)
 843                 td->o.odirect = 1;
 844
 845         /*
 846          * If randseed is set, that overrides randrepeat
 847          */
 848         if (fio_option_is_set(&td->o, rand_seed))
 849                 td->o.rand_repeatable = 0;
 850
 851         if (td_ioengine_flagged(td, FIO_NOEXTEND) && td->o.file_append) {
 852                 log_err("fio: can't append/extent with IO engine %s\n", td->io_ops->name);
 853                 ret = 1;
 854         }
 855
 856         if (fio_option_is_set(o, gtod_cpu)) {
 857                 fio_gtod_init();
 858                 fio_gtod_set_cpu(o->gtod_cpu);
 859                 fio_gtod_offload = 1;
 860         }
 861
 862         td->loops = o->loops;
 863         if (!td->loops)
 864                 td->loops = 1;
 865
 866         if (td->o.block_error_hist && td->o.nr_files != 1) {
 867                 log_err("fio: block error histogram only available "
 868                         "with a single file per job, but %d files "
 869                         "provided\n", td->o.nr_files);
 870                 ret = 1;
 871         }
 872
 873         return ret;
 874 }
 875
 876 /* External engines are specified by "external:name.o") */
 877 static const char *get_engine_name(const char *str)
 878 {
 879         char *p = strstr(str, ":");
 880
 881         if (!p)
 882                 return str;
 883
 884         p++;
 885         strip_blank_front(&p);
 886         strip_blank_end(p);
 887         return p;
 888 }
 889
 890 static void init_rand_file_service(struct thread_data *td)
 891 {
 892         unsigned long nranges = td->o.nr_files << FIO_FSERVICE_SHIFT;
 893         const unsigned int seed = td->rand_seeds[FIO_RAND_FILE_OFF];
 894
 895         if (td->o.file_service_type == FIO_FSERVICE_ZIPF) {
 896                 zipf_init(&td->next_file_zipf, nranges, td->zipf_theta, seed);
 897                 zipf_disable_hash(&td->next_file_zipf);
 898         } else if (td->o.file_service_type == FIO_FSERVICE_PARETO) {
 899                 pareto_init(&td->next_file_zipf, nranges, td->pareto_h, seed);
 900                 zipf_disable_hash(&td->next_file_zipf);
 901         } else if (td->o.file_service_type == FIO_FSERVICE_GAUSS) {
 902                 gauss_init(&td->next_file_gauss, nranges, td->gauss_dev, seed);
 903                 gauss_disable_hash(&td->next_file_gauss);
 904         }
 905 }
 906
 907 void td_fill_verify_state_seed(struct thread_data *td)
 908 {
 909         bool use64;
 910
 911         if (td->o.random_generator == FIO_RAND_GEN_TAUSWORTHE64)
 912                 use64 = 1;
 913         else
 914                 use64 = 0;
 915
 916         init_rand_seed(&td->verify_state, td->rand_seeds[FIO_RAND_VER_OFF],
 917                 use64);
 918 }
 919
 920 static void td_fill_rand_seeds_internal(struct thread_data *td, bool use64)
 921 {
 922         int i;
 923
 924         init_rand_seed(&td->bsrange_state, td->rand_seeds[FIO_RAND_BS_OFF], use64);
 925         td_fill_verify_state_seed(td);
 926         init_rand_seed(&td->rwmix_state, td->rand_seeds[FIO_RAND_MIX_OFF], false);
 927
 928         if (td->o.file_service_type == FIO_FSERVICE_RANDOM)
 929                 init_rand_seed(&td->next_file_state, td->rand_seeds[FIO_RAND_FILE_OFF], use64);
 930         else if (td->o.file_service_type & __FIO_FSERVICE_NONUNIFORM)
 931                 init_rand_file_service(td);
 932
 933         init_rand_seed(&td->file_size_state, td->rand_seeds[FIO_RAND_FILE_SIZE_OFF], use64);
 934         init_rand_seed(&td->trim_state, td->rand_seeds[FIO_RAND_TRIM_OFF], use64);
 935         init_rand_seed(&td->delay_state, td->rand_seeds[FIO_RAND_START_DELAY], use64);
 936         init_rand_seed(&td->poisson_state, td->rand_seeds[FIO_RAND_POISSON_OFF], 0);
 937         init_rand_seed(&td->dedupe_state, td->rand_seeds[FIO_DEDUPE_OFF], false);
 938         init_rand_seed(&td->zone_state, td->rand_seeds[FIO_RAND_ZONE_OFF], false);
 939
 940         if (!td_random(td))
 941                 return;
 942
 943         if (td->o.rand_repeatable)
 944                 td->rand_seeds[FIO_RAND_BLOCK_OFF] = FIO_RANDSEED * td->thread_number;
 945
 946         init_rand_seed(&td->random_state, td->rand_seeds[FIO_RAND_BLOCK_OFF], use64);
 947
 948         for (i = 0; i < DDIR_RWDIR_CNT; i++) {
 949                 struct frand_state *s = &td->seq_rand_state[i];
 950
 951                 init_rand_seed(s, td->rand_seeds[FIO_RAND_SEQ_RAND_READ_OFF], false);
 952         }
 953 }
 954
 955 void td_fill_rand_seeds(struct thread_data *td)
 956 {
 957         bool use64;
 958
 959         if (td->o.allrand_repeatable) {
 960                 unsigned int i;
 961
 962                 for (i = 0; i < FIO_RAND_NR_OFFS; i++)
 963                         td->rand_seeds[i] = FIO_RANDSEED * td->thread_number
 964                                 + i;
 965         }
 966
 967         if (td->o.random_generator == FIO_RAND_GEN_TAUSWORTHE64)
 968                 use64 = 1;
 969         else
 970                 use64 = 0;
 971
 972         td_fill_rand_seeds_internal(td, use64);
 973
 974         init_rand_seed(&td->buf_state, td->rand_seeds[FIO_RAND_BUF_OFF], use64);
 975         frand_copy(&td->buf_state_prev, &td->buf_state);
 976 }
 977
 978 /*
 979  * Initializes the ioengine configured for a job, if it has not been done so
 980  * already.
 981  */
 982 int ioengine_load(struct thread_data *td)
 983 {
 984         const char *engine;
 985
 986         /*
 987          * Engine has already been loaded.
 988          */
 989         if (td->io_ops)
 990                 return 0;
 991         if (!td->o.ioengine) {
 992                 log_err("fio: internal fault, no IO engine specified\n");
 993                 return 1;
 994         }
 995
 996         engine = get_engine_name(td->o.ioengine);
 997         td->io_ops = load_ioengine(td, engine);
 998         if (!td->io_ops) {
 999                 log_err("fio: failed to load engine %s\n", engine);
1000                 return 1;
1001         }
1002
1003         if (td->io_ops->option_struct_size && td->io_ops->options) {
1004                 /*
1005                  * In cases where td->eo is set, clone it for a child thread.
1006                  * This requires that the parent thread has the same ioengine,
1007                  * but that requirement must be enforced by the code which
1008                  * cloned the thread.
1009                  */
1010                 void *origeo = td->eo;
1011                 /*
1012                  * Otherwise use the default thread options.
1013                  */
1014                 if (!origeo && td != &def_thread && def_thread.eo &&
1015                     def_thread.io_ops->options == td->io_ops->options)
1016                         origeo = def_thread.eo;
1017
1018                 options_init(td->io_ops->options);
1019                 td->eo = malloc(td->io_ops->option_struct_size);
1020                 /*
1021                  * Use the default thread as an option template if this uses the
1022                  * same options structure and there are non-default options
1023                  * used.
1024                  */
1025                 if (origeo) {
1026                         memcpy(td->eo, origeo, td->io_ops->option_struct_size);
1027                         options_mem_dupe(td->io_ops->options, td->eo);
1028                 } else {
1029                         memset(td->eo, 0, td->io_ops->option_struct_size);
1030                         fill_default_options(td->eo, td->io_ops->options);
1031                 }
1032                 *(struct thread_data **)td->eo = td;
1033         }
1034
1035         if (td->o.odirect)
1036                 td->io_ops->flags |= FIO_RAWIO;
1037
1038         td_set_ioengine_flags(td);
1039         return 0;
1040 }
1041
1042 static void init_flags(struct thread_data *td)
1043 {
1044         struct thread_options *o = &td->o;
1045
1046         if (o->verify_backlog)
1047                 td->flags |= TD_F_VER_BACKLOG;
1048         if (o->trim_backlog)
1049                 td->flags |= TD_F_TRIM_BACKLOG;
1050         if (o->read_iolog_file)
1051                 td->flags |= TD_F_READ_IOLOG;
1052         if (o->refill_buffers)
1053                 td->flags |= TD_F_REFILL_BUFFERS;
1054         /*
1055          * Always scramble buffers if asked to
1056          */
1057         if (o->scramble_buffers && fio_option_is_set(o, scramble_buffers))
1058                 td->flags |= TD_F_SCRAMBLE_BUFFERS;
1059         /*
1060          * But also scramble buffers, unless we were explicitly asked
1061          * to zero them.
1062          */
1063         if (o->scramble_buffers && !(o->zero_buffers &&
1064             fio_option_is_set(o, zero_buffers)))
1065                 td->flags |= TD_F_SCRAMBLE_BUFFERS;
1066         if (o->verify != VERIFY_NONE)
1067                 td->flags |= TD_F_VER_NONE;
1068
1069         if (o->verify_async || o->io_submit_mode == IO_MODE_OFFLOAD)
1070                 td->flags |= TD_F_NEED_LOCK;
1071 }
1072
1073 static int setup_random_seeds(struct thread_data *td)
1074 {
1075         unsigned long seed;
1076         unsigned int i;
1077
1078         if (!td->o.rand_repeatable && !fio_option_is_set(&td->o, rand_seed))
1079                 return init_random_state(td, td->rand_seeds, sizeof(td->rand_seeds));
1080
1081         seed = td->o.rand_seed;
1082         for (i = 0; i < 4; i++)
1083                 seed *= 0x9e370001UL;
1084
1085         for (i = 0; i < FIO_RAND_NR_OFFS; i++) {
1086                 td->rand_seeds[i] = seed * td->thread_number + i;
1087                 seed *= 0x9e370001UL;
1088         }
1089
1090         td_fill_rand_seeds(td);
1091         return 0;
1092 }
1093
1094 enum {
1095         FPRE_NONE = 0,
1096         FPRE_JOBNAME,
1097         FPRE_JOBNUM,
1098         FPRE_FILENUM
1099 };
1100
1101 static struct fpre_keyword {
1102         const char *keyword;
1103         size_t strlen;
1104         int key;
1105 } fpre_keywords[] = {
1106         { .keyword = "$jobname",        .key = FPRE_JOBNAME, },
1107         { .keyword = "$jobnum",         .key = FPRE_JOBNUM, },
1108         { .keyword = "$filenum",        .key = FPRE_FILENUM, },
1109         { .keyword = NULL, },
1110         };
1111
1112 static char *make_filename(char *buf, size_t buf_size,struct thread_options *o,
1113                            const char *jobname, int jobnum, int filenum)
1114 {
1115         struct fpre_keyword *f;
1116         char copy[PATH_MAX];
1117         size_t dst_left = PATH_MAX - 1;
1118
1119         if (!o->filename_format || !strlen(o->filename_format)) {
1120                 sprintf(buf, "%s.%d.%d", jobname, jobnum, filenum);
1121                 return buf;
1122         }
1123
1124         for (f = &fpre_keywords[0]; f->keyword; f++)
1125                 f->strlen = strlen(f->keyword);
1126
1127         buf[buf_size - 1] = '\0';
1128         strncpy(buf, o->filename_format, buf_size - 1);
1129
1130         memset(copy, 0, sizeof(copy));
1131         for (f = &fpre_keywords[0]; f->keyword; f++) {
1132                 do {
1133                         size_t pre_len, post_start = 0;
1134                         char *str, *dst = copy;
1135
1136                         str = strcasestr(buf, f->keyword);
1137                         if (!str)
1138                                 break;
1139
1140                         pre_len = str - buf;
1141                         if (strlen(str) != f->strlen)
1142                                 post_start = pre_len + f->strlen;
1143
1144                         if (pre_len) {
1145                                 strncpy(dst, buf, pre_len);
1146                                 dst += pre_len;
1147                                 dst_left -= pre_len;
1148                         }
1149
1150                         switch (f->key) {
1151                         case FPRE_JOBNAME: {
1152                                 int ret;
1153
1154                                 ret = snprintf(dst, dst_left, "%s", jobname);
1155                                 if (ret < 0)
1156                                         break;
1157                                 else if (ret > dst_left) {
1158                                         log_err("fio: truncated filename\n");
1159                                         dst += dst_left;
1160                                         dst_left = 0;
1161                                 } else {
1162                                         dst += ret;
1163                                         dst_left -= ret;
1164                                 }
1165                                 break;
1166                                 }
1167                         case FPRE_JOBNUM: {
1168                                 int ret;
1169
1170                                 ret = snprintf(dst, dst_left, "%d", jobnum);
1171                                 if (ret < 0)
1172                                         break;
1173                                 else if (ret > dst_left) {
1174                                         log_err("fio: truncated filename\n");
1175                                         dst += dst_left;
1176                                         dst_left = 0;
1177                                 } else {
1178                                         dst += ret;
1179                                         dst_left -= ret;
1180                                 }
1181                                 break;
1182                                 }
1183                         case FPRE_FILENUM: {
1184                                 int ret;
1185
1186                                 ret = snprintf(dst, dst_left, "%d", filenum);
1187                                 if (ret < 0)
1188                                         break;
1189                                 else if (ret > dst_left) {
1190                                         log_err("fio: truncated filename\n");
1191                                         dst += dst_left;
1192                                         dst_left = 0;
1193                                 } else {
1194                                         dst += ret;
1195                                         dst_left -= ret;
1196                                 }
1197                                 break;
1198                                 }
1199                         default:
1200                                 assert(0);
1201                                 break;
1202                         }
1203
1204                         if (post_start)
1205                                 strncpy(dst, buf + post_start, dst_left);
1206
1207                         strncpy(buf, copy, buf_size - 1);
1208                 } while (1);
1209         }
1210
1211         return buf;
1212 }
1213
1214 bool parse_dryrun(void)
1215 {
1216         return dump_cmdline || parse_only;
1217 }
1218
1219 static void gen_log_name(char *name, size_t size, const char *logtype,
1220                          const char *logname, unsigned int num,
1221                          const char *suf, int per_job)
1222 {
1223         if (per_job)
1224                 snprintf(name, size, "%s_%s.%d.%s", logname, logtype, num, suf);
1225         else
1226                 snprintf(name, size, "%s_%s.%s", logname, logtype, suf);
1227 }
1228
1229 static int check_waitees(char *waitee)
1230 {
1231         struct thread_data *td;
1232         int i, ret = 0;
1233
1234         for_each_td(td, i) {
1235                 if (td->subjob_number)
1236                         continue;
1237
1238                 ret += !strcmp(td->o.name, waitee);
1239         }
1240
1241         return ret;
1242 }
1243
1244 static bool wait_for_ok(const char *jobname, struct thread_options *o)
1245 {
1246         int nw;
1247
1248         if (!o->wait_for)
1249                 return true;
1250
1251         if (!strcmp(jobname, o->wait_for)) {
1252                 log_err("%s: a job cannot wait for itself (wait_for=%s).\n",
1253                                 jobname, o->wait_for);
1254                 return false;
1255         }
1256
1257         if (!(nw = check_waitees(o->wait_for))) {
1258                 log_err("%s: waitee job %s unknown.\n", jobname, o->wait_for);
1259                 return false;
1260         }
1261
1262         if (nw > 1) {
1263                 log_err("%s: multiple waitees %s found,\n"
1264                         "please avoid duplicates when using wait_for option.\n",
1265                                 jobname, o->wait_for);
1266                 return false;
1267         }
1268
1269         return true;
1270 }
1271
1272 /*
1273  * Adds a job to the list of things todo. Sanitizes the various options
1274  * to make sure we don't have conflicts, and initializes various
1275  * members of td.
1276  */
1277 static int add_job(struct thread_data *td, const char *jobname, int job_add_num,
1278                    int recursed, int client_type)
1279 {
1280         unsigned int i;
1281         char fname[PATH_MAX];
1282         int numjobs, file_alloced;
1283         struct thread_options *o = &td->o;
1284         char logname[PATH_MAX + 32];
1285
1286         /*
1287          * the def_thread is just for options, it's not a real job
1288          */
1289         if (td == &def_thread)
1290                 return 0;
1291
1292         init_flags(td);
1293
1294         /*
1295          * if we are just dumping the output command line, don't add the job
1296          */
1297         if (parse_dryrun()) {
1298                 put_job(td);
1299                 return 0;
1300         }
1301
1302         td->client_type = client_type;
1303
1304         if (profile_td_init(td))
1305                 goto err;
1306
1307         if (ioengine_load(td))
1308                 goto err;
1309
1310         file_alloced = 0;
1311         if (!o->filename && !td->files_index && !o->read_iolog_file) {
1312                 file_alloced = 1;
1313
1314                 if (o->nr_files == 1 && exists_and_not_regfile(jobname))
1315                         add_file(td, jobname, job_add_num, 0);
1316                 else {
1317                         for (i = 0; i < o->nr_files; i++)
1318                                 add_file(td, make_filename(fname, sizeof(fname), o, jobname, job_add_num, i), job_add_num, 0);
1319                 }
1320         }
1321
1322         if (fixup_options(td))
1323                 goto err;
1324
1325         /*
1326          * Belongs to fixup_options, but o->name is not necessarily set as yet
1327          */
1328         if (!wait_for_ok(jobname, o))
1329                 goto err;
1330
1331         flow_init_job(td);
1332
1333         /*
1334          * IO engines only need this for option callbacks, and the address may
1335          * change in subprocesses.
1336          */
1337         if (td->eo)
1338                 *(struct thread_data **)td->eo = NULL;
1339
1340         if (td_ioengine_flagged(td, FIO_DISKLESSIO)) {
1341                 struct fio_file *f;
1342
1343                 for_each_file(td, f, i)
1344                         f->real_file_size = -1ULL;
1345         }
1346
1347         td->mutex = fio_mutex_init(FIO_MUTEX_LOCKED);
1348
1349         td->ts.clat_percentiles = o->clat_percentiles;
1350         td->ts.percentile_precision = o->percentile_precision;
1351         memcpy(td->ts.percentile_list, o->percentile_list, sizeof(o->percentile_list));
1352
1353         for (i = 0; i < DDIR_RWDIR_CNT; i++) {
1354                 td->ts.clat_stat[i].min_val = ULONG_MAX;
1355                 td->ts.slat_stat[i].min_val = ULONG_MAX;
1356                 td->ts.lat_stat[i].min_val = ULONG_MAX;
1357                 td->ts.bw_stat[i].min_val = ULONG_MAX;
1358         }
1359         td->ddir_seq_nr = o->ddir_seq_nr;
1360
1361         if ((o->stonewall || o->new_group) && prev_group_jobs) {
1362                 prev_group_jobs = 0;
1363                 groupid++;
1364                 if (groupid == INT_MAX) {
1365                         log_err("fio: too many groups defined\n");
1366                         goto err;
1367                 }
1368         }
1369
1370         td->groupid = groupid;
1371         prev_group_jobs++;
1372
1373         if (setup_random_seeds(td)) {
1374                 td_verror(td, errno, "init_random_state");
1375                 goto err;
1376         }
1377
1378         if (setup_rate(td))
1379                 goto err;
1380
1381         if (o->write_lat_log) {
1382                 struct log_params p = {
1383                         .td = td,
1384                         .avg_msec = o->log_avg_msec,
1385                         .hist_msec = o->log_hist_msec,
1386                         .hist_coarseness = o->log_hist_coarseness,
1387                         .log_type = IO_LOG_TYPE_LAT,
1388                         .log_offset = o->log_offset,
1389                         .log_gz = o->log_gz,
1390                         .log_gz_store = o->log_gz_store,
1391                 };
1392                 const char *pre = o->lat_log_file ? o->lat_log_file : o->name;
1393                 const char *suf;
1394
1395                 if (p.log_gz_store)
1396                         suf = "log.fz";
1397                 else
1398                         suf = "log";
1399
1400                 gen_log_name(logname, sizeof(logname), "lat", pre,
1401                                 td->thread_number, suf, o->per_job_logs);
1402                 setup_log(&td->lat_log, &p, logname);
1403
1404                 gen_log_name(logname, sizeof(logname), "slat", pre,
1405                                 td->thread_number, suf, o->per_job_logs);
1406                 setup_log(&td->slat_log, &p, logname);
1407
1408                 gen_log_name(logname, sizeof(logname), "clat", pre,
1409                                 td->thread_number, suf, o->per_job_logs);
1410                 setup_log(&td->clat_log, &p, logname);
1411         }
1412
1413         if (o->write_hist_log) {
1414                 struct log_params p = {
1415                         .td = td,
1416                         .avg_msec = o->log_avg_msec,
1417                         .hist_msec = o->log_hist_msec,
1418                         .hist_coarseness = o->log_hist_coarseness,
1419                         .log_type = IO_LOG_TYPE_HIST,
1420                         .log_offset = o->log_offset,
1421                         .log_gz = o->log_gz,
1422                         .log_gz_store = o->log_gz_store,
1423                 };
1424                 const char *pre = o->hist_log_file ? o->hist_log_file : o->name;
1425                 const char *suf;
1426
1427 #ifndef CONFIG_ZLIB
1428                 if (td->client_type) {
1429                         log_err("fio: --write_hist_log requires zlib in client/server mode\n");
1430                         goto err;
1431                 }
1432 #endif
1433
1434                 if (p.log_gz_store)
1435                         suf = "log.fz";
1436                 else
1437                         suf = "log";
1438
1439                 gen_log_name(logname, sizeof(logname), "clat_hist", pre,
1440                                 td->thread_number, suf, o->per_job_logs);
1441                 setup_log(&td->clat_hist_log, &p, logname);
1442         }
1443
1444         if (o->write_bw_log) {
1445                 struct log_params p = {
1446                         .td = td,
1447                         .avg_msec = o->log_avg_msec,
1448                         .hist_msec = o->log_hist_msec,
1449                         .hist_coarseness = o->log_hist_coarseness,
1450                         .log_type = IO_LOG_TYPE_BW,
1451                         .log_offset = o->log_offset,
1452                         .log_gz = o->log_gz,
1453                         .log_gz_store = o->log_gz_store,
1454                 };
1455                 const char *pre = o->bw_log_file ? o->bw_log_file : o->name;
1456                 const char *suf;
1457
1458                 if (fio_option_is_set(o, bw_avg_time))
1459                         p.avg_msec = min(o->log_avg_msec, o->bw_avg_time);
1460                 else
1461                         o->bw_avg_time = p.avg_msec;
1462
1463                 p.hist_msec = o->log_hist_msec;
1464                 p.hist_coarseness = o->log_hist_coarseness;
1465
1466                 if (p.log_gz_store)
1467                         suf = "log.fz";
1468                 else
1469                         suf = "log";
1470
1471                 gen_log_name(logname, sizeof(logname), "bw", pre,
1472                                 td->thread_number, suf, o->per_job_logs);
1473                 setup_log(&td->bw_log, &p, logname);
1474         }
1475         if (o->write_iops_log) {
1476                 struct log_params p = {
1477                         .td = td,
1478                         .avg_msec = o->log_avg_msec,
1479                         .hist_msec = o->log_hist_msec,
1480                         .hist_coarseness = o->log_hist_coarseness,
1481                         .log_type = IO_LOG_TYPE_IOPS,
1482                         .log_offset = o->log_offset,
1483                         .log_gz = o->log_gz,
1484                         .log_gz_store = o->log_gz_store,
1485                 };
1486                 const char *pre = o->iops_log_file ? o->iops_log_file : o->name;
1487                 const char *suf;
1488
1489                 if (fio_option_is_set(o, iops_avg_time))
1490                         p.avg_msec = min(o->log_avg_msec, o->iops_avg_time);
1491                 else
1492                         o->iops_avg_time = p.avg_msec;
1493
1494                 p.hist_msec = o->log_hist_msec;
1495                 p.hist_coarseness = o->log_hist_coarseness;
1496
1497                 if (p.log_gz_store)
1498                         suf = "log.fz";
1499                 else
1500                         suf = "log";
1501
1502                 gen_log_name(logname, sizeof(logname), "iops", pre,
1503                                 td->thread_number, suf, o->per_job_logs);
1504                 setup_log(&td->iops_log, &p, logname);
1505         }
1506
1507         if (!o->name)
1508                 o->name = strdup(jobname);
1509
1510         if (output_format & FIO_OUTPUT_NORMAL) {
1511                 if (!job_add_num) {
1512                         if (is_backend && !recursed)
1513                                 fio_server_send_add_job(td);
1514
1515                         if (!td_ioengine_flagged(td, FIO_NOIO)) {
1516                                 char *c1, *c2, *c3, *c4;
1517                                 char *c5 = NULL, *c6 = NULL;
1518                                 int i2p = is_power_of_2(o->kb_base);
1519
1520                                 c1 = num2str(o->min_bs[DDIR_READ], 4, 1, i2p, N2S_BYTE);
1521                                 c2 = num2str(o->max_bs[DDIR_READ], 4, 1, i2p, N2S_BYTE);
1522                                 c3 = num2str(o->min_bs[DDIR_WRITE], 4, 1, i2p, N2S_BYTE);
1523                                 c4 = num2str(o->max_bs[DDIR_WRITE], 4, 1, i2p, N2S_BYTE);
1524
1525                                 if (!o->bs_is_seq_rand) {
1526                                         c5 = num2str(o->min_bs[DDIR_TRIM], 4, 1, i2p, N2S_BYTE);
1527                                         c6 = num2str(o->max_bs[DDIR_TRIM], 4, 1, i2p, N2S_BYTE);
1528                                 }
1529
1530                                 log_info("%s: (g=%d): rw=%s, ", td->o.name,
1531                                                         td->groupid,
1532                                                         ddir_str(o->td_ddir));
1533
1534                                 if (o->bs_is_seq_rand)
1535                                         log_info("bs=(R) %s-%s, (W) %s-%s, bs_is_seq_rand, ",
1536                                                         c1, c2, c3, c4);
1537                                 else
1538                                         log_info("bs=(R) %s-%s, (W) %s-%s, (T) %s-%s, ",
1539                                                         c1, c2, c3, c4, c5, c6);
1540
1541                                 log_info("ioengine=%s, iodepth=%u\n",
1542                                                 td->io_ops->name, o->iodepth);
1543
1544                                 free(c1);
1545                                 free(c2);
1546                                 free(c3);
1547                                 free(c4);
1548                                 free(c5);
1549                                 free(c6);
1550                         }
1551                 } else if (job_add_num == 1)
1552                         log_info("...\n");
1553         }
1554
1555         if (td_steadystate_init(td))
1556                 goto err;
1557
1558         /*
1559          * recurse add identical jobs, clear numjobs and stonewall options
1560          * as they don't apply to sub-jobs
1561          */
1562         numjobs = o->numjobs;
1563         while (--numjobs) {
1564                 struct thread_data *td_new = get_new_job(false, td, true, jobname);
1565
1566                 if (!td_new)
1567                         goto err;
1568
1569                 td_new->o.numjobs = 1;
1570                 td_new->o.stonewall = 0;
1571                 td_new->o.new_group = 0;
1572                 td_new->subjob_number = numjobs;
1573                 td_new->o.ss_dur = o->ss_dur * 1000000l;
1574                 td_new->o.ss_limit = o->ss_limit;
1575
1576                 if (file_alloced) {
1577                         if (td_new->files) {
1578                                 struct fio_file *f;
1579                                 for_each_file(td_new, f, i) {
1580                                         if (f->file_name)
1581                                                 sfree(f->file_name);
1582                                         sfree(f);
1583                                 }
1584                                 free(td_new->files);
1585                                 td_new->files = NULL;
1586                         }
1587                         td_new->files_index = 0;
1588                         td_new->files_size = 0;
1589                         if (td_new->o.filename) {
1590                                 free(td_new->o.filename);
1591                                 td_new->o.filename = NULL;
1592                         }
1593                 }
1594
1595                 if (add_job(td_new, jobname, numjobs, 1, client_type))
1596                         goto err;
1597         }
1598
1599         return 0;
1600 err:
1601         put_job(td);
1602         return -1;
1603 }
1604
1605 /*
1606  * Parse as if 'o' was a command line
1607  */
1608 void add_job_opts(const char **o, int client_type)
1609 {
1610         struct thread_data *td, *td_parent;
1611         int i, in_global = 1;
1612         char jobname[32];
1613
1614         i = 0;
1615         td_parent = td = NULL;
1616         while (o[i]) {
1617                 if (!strncmp(o[i], "name", 4)) {
1618                         in_global = 0;
1619                         if (td)
1620                                 add_job(td, jobname, 0, 0, client_type);
1621                         td = NULL;
1622                         sprintf(jobname, "%s", o[i] + 5);
1623                 }
1624                 if (in_global && !td_parent)
1625                         td_parent = get_new_job(true, &def_thread, false, jobname);
1626                 else if (!in_global && !td) {
1627                         if (!td_parent)
1628                                 td_parent = &def_thread;
1629                         td = get_new_job(false, td_parent, false, jobname);
1630                 }
1631                 if (in_global)
1632                         fio_options_parse(td_parent, (char **) &o[i], 1);
1633                 else
1634                         fio_options_parse(td, (char **) &o[i], 1);
1635                 i++;
1636         }
1637
1638         if (td)
1639                 add_job(td, jobname, 0, 0, client_type);
1640 }
1641
1642 static int skip_this_section(const char *name)
1643 {
1644         int i;
1645
1646         if (!nr_job_sections)
1647                 return 0;
1648         if (!strncmp(name, "global", 6))
1649                 return 0;
1650
1651         for (i = 0; i < nr_job_sections; i++)
1652                 if (!strcmp(job_sections[i], name))
1653                         return 0;
1654
1655         return 1;
1656 }
1657
1658 static int is_empty_or_comment(char *line)
1659 {
1660         unsigned int i;
1661
1662         for (i = 0; i < strlen(line); i++) {
1663                 if (line[i] == ';')
1664                         return 1;
1665                 if (line[i] == '#')
1666                         return 1;
1667                 if (!isspace((int) line[i]) && !iscntrl((int) line[i]))
1668                         return 0;
1669         }
1670
1671         return 1;
1672 }
1673
1674 /*
1675  * This is our [ini] type file parser.
1676  */
1677 static int __parse_jobs_ini(struct thread_data *td,
1678                 char *file, int is_buf, int stonewall_flag, int type,
1679                 int nested, char *name, char ***popts, int *aopts, int *nopts)
1680 {
1681         bool global = false;
1682         char *string;
1683         FILE *f;
1684         char *p;
1685         int ret = 0, stonewall;
1686         int first_sect = 1;
1687         int skip_fgets = 0;
1688         int inside_skip = 0;
1689         char **opts;
1690         int i, alloc_opts, num_opts;
1691
1692         dprint(FD_PARSE, "Parsing ini file %s\n", file);
1693         assert(td || !nested);
1694
1695         if (is_buf)
1696                 f = NULL;
1697         else {
1698                 if (!strcmp(file, "-"))
1699                         f = stdin;
1700                 else
1701                         f = fopen(file, "r");
1702
1703                 if (!f) {
1704                         int __err = errno;
1705
1706                         log_err("fio: unable to open '%s' job file\n", file);
1707                         if (td)
1708                                 td_verror(td, __err, "job file open");
1709                         return 1;
1710                 }
1711         }
1712
1713         string = malloc(4096);
1714
1715         /*
1716          * it's really 256 + small bit, 280 should suffice
1717          */
1718         if (!nested) {
1719                 name = malloc(280);
1720                 memset(name, 0, 280);
1721         }
1722
1723         opts = NULL;
1724         if (nested && popts) {
1725                 opts = *popts;
1726                 alloc_opts = *aopts;
1727                 num_opts = *nopts;
1728         }
1729
1730         if (!opts) {
1731                 alloc_opts = 8;
1732                 opts = malloc(sizeof(char *) * alloc_opts);
1733                 num_opts = 0;
1734         }
1735
1736         stonewall = stonewall_flag;
1737         do {
1738                 /*
1739                  * if skip_fgets is set, we already have loaded a line we
1740                  * haven't handled.
1741                  */
1742                 if (!skip_fgets) {
1743                         if (is_buf)
1744                                 p = strsep(&file, "\n");
1745                         else
1746                                 p = fgets(string, 4096, f);
1747                         if (!p)
1748                                 break;
1749                 }
1750
1751                 skip_fgets = 0;
1752                 strip_blank_front(&p);
1753                 strip_blank_end(p);
1754
1755                 dprint(FD_PARSE, "%s\n", p);
1756                 if (is_empty_or_comment(p))
1757                         continue;
1758
1759                 if (!nested) {
1760                         if (sscanf(p, "[%255[^\n]]", name) != 1) {
1761                                 if (inside_skip)
1762                                         continue;
1763
1764                                 log_err("fio: option <%s> outside of "
1765                                         "[] job section\n", p);
1766                                 ret = 1;
1767                                 break;
1768                         }
1769
1770                         name[strlen(name) - 1] = '\0';
1771
1772                         if (skip_this_section(name)) {
1773                                 inside_skip = 1;
1774                                 continue;
1775                         } else
1776                                 inside_skip = 0;
1777
1778                         dprint(FD_PARSE, "Parsing section [%s]\n", name);
1779
1780                         global = !strncmp(name, "global", 6);
1781
1782                         if (dump_cmdline) {
1783                                 if (first_sect)
1784                                         log_info("fio ");
1785                                 if (!global)
1786                                         log_info("--name=%s ", name);
1787                                 first_sect = 0;
1788                         }
1789
1790                         td = get_new_job(global, &def_thread, false, name);
1791                         if (!td) {
1792                                 ret = 1;
1793                                 break;
1794                         }
1795
1796                         /*
1797                          * Separate multiple job files by a stonewall
1798                          */
1799                         if (!global && stonewall) {
1800                                 td->o.stonewall = stonewall;
1801                                 stonewall = 0;
1802                         }
1803
1804                         num_opts = 0;
1805                         memset(opts, 0, alloc_opts * sizeof(char *));
1806                 }
1807                 else
1808                         skip_fgets = 1;
1809
1810                 while (1) {
1811                         if (!skip_fgets) {
1812                                 if (is_buf)
1813                                         p = strsep(&file, "\n");
1814                                 else
1815                                         p = fgets(string, 4096, f);
1816                                 if (!p)
1817                                         break;
1818                                 dprint(FD_PARSE, "%s", p);
1819                         }
1820                         else
1821                                 skip_fgets = 0;
1822
1823                         if (is_empty_or_comment(p))
1824                                 continue;
1825
1826                         strip_blank_front(&p);
1827
1828                         /*
1829                          * new section, break out and make sure we don't
1830                          * fgets() a new line at the top.
1831                          */
1832                         if (p[0] == '[') {
1833                                 if (nested) {
1834                                         log_err("No new sections in included files\n");
1835                                         return 1;
1836                                 }
1837
1838                                 skip_fgets = 1;
1839                                 break;
1840                         }
1841
1842                         strip_blank_end(p);
1843
1844                         if (!strncmp(p, "include", strlen("include"))) {
1845                                 char *filename = p + strlen("include") + 1,
1846                                         *ts, *full_fn = NULL;
1847
1848                                 /*
1849                                  * Allow for the include filename
1850                                  * specification to be relative.
1851                                  */
1852                                 if (access(filename, F_OK) &&
1853                                     (ts = strrchr(file, '/'))) {
1854                                         int len = ts - file +
1855                                                 strlen(filename) + 2;
1856
1857                                         if (!(full_fn = calloc(1, len))) {
1858                                                 ret = ENOMEM;
1859                                                 break;
1860                                         }
1861
1862                                         strncpy(full_fn,
1863                                                 file, (ts - file) + 1);
1864                                         strncpy(full_fn + (ts - file) + 1,
1865                                                 filename, strlen(filename));
1866                                         full_fn[len - 1] = 0;
1867                                         filename = full_fn;
1868                                 }
1869
1870                                 ret = __parse_jobs_ini(td, filename, is_buf,
1871                                                        stonewall_flag, type, 1,
1872                                                        name, &opts,
1873                                                        &alloc_opts, &num_opts);
1874
1875                                 if (ret) {
1876                                         log_err("Error %d while parsing "
1877                                                 "include file %s\n",
1878                                                 ret, filename);
1879                                 }
1880
1881                                 if (full_fn)
1882                                         free(full_fn);
1883
1884                                 if (ret)
1885                                         break;
1886
1887                                 continue;
1888                         }
1889
1890                         if (num_opts == alloc_opts) {
1891                                 alloc_opts <<= 1;
1892                                 opts = realloc(opts,
1893                                                 alloc_opts * sizeof(char *));
1894                         }
1895
1896                         opts[num_opts] = strdup(p);
1897                         num_opts++;
1898                 }
1899
1900                 if (nested) {
1901                         *popts = opts;
1902                         *aopts = alloc_opts;
1903                         *nopts = num_opts;
1904                         goto out;
1905                 }
1906
1907                 ret = fio_options_parse(td, opts, num_opts);
1908                 if (!ret) {
1909                         if (dump_cmdline)
1910                                 dump_opt_list(td);
1911
1912                         ret = add_job(td, name, 0, 0, type);
1913                 } else {
1914                         log_err("fio: job %s dropped\n", name);
1915                         put_job(td);
1916                 }
1917
1918                 for (i = 0; i < num_opts; i++)
1919                         free(opts[i]);
1920                 num_opts = 0;
1921         } while (!ret);
1922
1923         if (dump_cmdline)
1924                 log_info("\n");
1925
1926         i = 0;
1927         while (i < nr_job_sections) {
1928                 free(job_sections[i]);
1929                 i++;
1930         }
1931
1932         free(opts);
1933 out:
1934         free(string);
1935         if (!nested)
1936                 free(name);
1937         if (!is_buf && f != stdin)
1938                 fclose(f);
1939         return ret;
1940 }
1941
1942 int parse_jobs_ini(char *file, int is_buf, int stonewall_flag, int type)
1943 {
1944         return __parse_jobs_ini(NULL, file, is_buf, stonewall_flag, type,
1945                         0, NULL, NULL, NULL, NULL);
1946 }
1947
1948 static int fill_def_thread(void)
1949 {
1950         memset(&def_thread, 0, sizeof(def_thread));
1951         INIT_FLIST_HEAD(&def_thread.opt_list);
1952
1953         fio_getaffinity(getpid(), &def_thread.o.cpumask);
1954         def_thread.o.error_dump = 1;
1955
1956         /*
1957          * fill default options
1958          */
1959         fio_fill_default_options(&def_thread);
1960         return 0;
1961 }
1962
1963 static void show_debug_categories(void)
1964 {
1965 #ifdef FIO_INC_DEBUG
1966         struct debug_level *dl = &debug_levels[0];
1967         int curlen, first = 1;
1968
1969         curlen = 0;
1970         while (dl->name) {
1971                 int has_next = (dl + 1)->name != NULL;
1972
1973                 if (first || curlen + strlen(dl->name) >= 80) {
1974                         if (!first) {
1975                                 printf("\n");
1976                                 curlen = 0;
1977                         }
1978                         curlen += printf("\t\t\t%s", dl->name);
1979                         curlen += 3 * (8 - 1);
1980                         if (has_next)
1981                                 curlen += printf(",");
1982                 } else {
1983                         curlen += printf("%s", dl->name);
1984                         if (has_next)
1985                                 curlen += printf(",");
1986                 }
1987                 dl++;
1988                 first = 0;
1989         }
1990         printf("\n");
1991 #endif
1992 }
1993
1994 /*
1995  * Following options aren't printed by usage().
1996  * --append-terse - Equivalent to --output-format=terse, see f6a7df53.
1997  * --latency-log - Deprecated option.
1998  */
1999 static void usage(const char *name)
2000 {
2001         printf("%s\n", fio_version_string);
2002         printf("%s [options] [job options] <job file(s)>\n", name);
2003         printf("  --debug=options\tEnable debug logging. May be one/more of:\n");
2004         show_debug_categories();
2005         printf("  --parse-only\t\tParse options only, don't start any IO\n");
2006         printf("  --output\t\tWrite output to file\n");
2007         printf("  --bandwidth-log\tGenerate aggregate bandwidth logs\n");
2008         printf("  --minimal\t\tMinimal (terse) output\n");
2009         printf("  --output-format=type\tOutput format (terse,json,json+,normal)\n");
2010         printf("  --terse-version=type\tSet terse version output format"
2011                 " (default 3, or 2 or 4)\n");
2012         printf("  --version\t\tPrint version info and exit\n");
2013         printf("  --help\t\tPrint this page\n");
2014         printf("  --cpuclock-test\tPerform test/validation of CPU clock\n");
2015         printf("  --crctest=type\tTest speed of checksum functions\n");
2016         printf("  --cmdhelp=cmd\t\tPrint command help, \"all\" for all of"
2017                 " them\n");
2018         printf("  --enghelp=engine\tPrint ioengine help, or list"
2019                 " available ioengines\n");
2020         printf("  --enghelp=engine,cmd\tPrint help for an ioengine"
2021                 " cmd\n");
2022         printf("  --showcmd\t\tTurn a job file into command line options\n");
2023         printf("  --eta=when\t\tWhen ETA estimate should be printed\n");
2024         printf("            \t\tMay be \"always\", \"never\" or \"auto\"\n");
2025         printf("  --eta-newline=time\tForce a new line for every 'time'");
2026         printf(" period passed\n");
2027         printf("  --status-interval=t\tForce full status dump every");
2028         printf(" 't' period passed\n");
2029         printf("  --readonly\t\tTurn on safety read-only checks, preventing"
2030                 " writes\n");
2031         printf("  --section=name\tOnly run specified section in job file,"
2032                 " multiple sections can be specified\n");
2033         printf("  --alloc-size=kb\tSet smalloc pool to this size in kb"
2034                 " (def 16384)\n");
2035         printf("  --warnings-fatal\tFio parser warnings are fatal\n");
2036         printf("  --max-jobs=nr\t\tMaximum number of threads/processes to support\n");
2037         printf("  --server=args\t\tStart a backend fio server\n");
2038         printf("  --daemonize=pidfile\tBackground fio server, write pid to file\n");
2039         printf("  --client=hostname\tTalk to remote backend(s) fio server at hostname\n");
2040         printf("  --remote-config=file\tTell fio server to load this local job file\n");
2041         printf("  --idle-prof=option\tReport cpu idleness on a system or percpu basis\n"
2042                 "\t\t\t(option=system,percpu) or run unit work\n"
2043                 "\t\t\tcalibration only (option=calibrate)\n");
2044 #ifdef CONFIG_ZLIB
2045         printf("  --inflate-log=log\tInflate and output compressed log\n");
2046 #endif
2047         printf("  --trigger-file=file\tExecute trigger cmd when file exists\n");
2048         printf("  --trigger-timeout=t\tExecute trigger af this time\n");
2049         printf("  --trigger=cmd\t\tSet this command as local trigger\n");
2050         printf("  --trigger-remote=cmd\tSet this command as remote trigger\n");
2051         printf("  --aux-path=path\tUse this path for fio state generated files\n");
2052         printf("\nFio was written by Jens Axboe <jens.axboe@oracle.com>");
2053         printf("\n                   Jens Axboe <jaxboe@fusionio.com>");
2054         printf("\n                   Jens Axboe <axboe@fb.com>\n");
2055 }
2056
2057 #ifdef FIO_INC_DEBUG
2058 struct debug_level debug_levels[] = {
2059         { .name = "process",
2060           .help = "Process creation/exit logging",
2061           .shift = FD_PROCESS,
2062         },
2063         { .name = "file",
2064           .help = "File related action logging",
2065           .shift = FD_FILE,
2066         },
2067         { .name = "io",
2068           .help = "IO and IO engine action logging (offsets, queue, completions, etc)",
2069           .shift = FD_IO,
2070         },
2071         { .name = "mem",
2072           .help = "Memory allocation/freeing logging",
2073           .shift = FD_MEM,
2074         },
2075         { .name = "blktrace",
2076           .help = "blktrace action logging",
2077           .shift = FD_BLKTRACE,
2078         },
2079         { .name = "verify",
2080           .help = "IO verification action logging",
2081           .shift = FD_VERIFY,
2082         },
2083         { .name = "random",
2084           .help = "Random generation logging",
2085           .shift = FD_RANDOM,
2086         },
2087         { .name = "parse",
2088           .help = "Parser logging",
2089           .shift = FD_PARSE,
2090         },
2091         { .name = "diskutil",
2092           .help = "Disk utility logging actions",
2093           .shift = FD_DISKUTIL,
2094         },
2095         { .name = "job",
2096           .help = "Logging related to creating/destroying jobs",
2097           .shift = FD_JOB,
2098         },
2099         { .name = "mutex",
2100           .help = "Mutex logging",
2101           .shift = FD_MUTEX
2102         },
2103         { .name = "profile",
2104           .help = "Logging related to profiles",
2105           .shift = FD_PROFILE,
2106         },
2107         { .name = "time",
2108           .help = "Logging related to time keeping functions",
2109           .shift = FD_TIME,
2110         },
2111         { .name = "net",
2112           .help = "Network logging",
2113           .shift = FD_NET,
2114         },
2115         { .name = "rate",
2116           .help = "Rate logging",
2117           .shift = FD_RATE,
2118         },
2119         { .name = "compress",
2120           .help = "Log compression logging",
2121           .shift = FD_COMPRESS,
2122         },
2123         { .name = "steadystate",
2124           .help = "Steady state detection logging",
2125           .shift = FD_STEADYSTATE,
2126         },
2127         { .name = "helperthread",
2128           .help = "Helper thread logging",
2129           .shift = FD_HELPERTHREAD,
2130         },
2131         { .name = NULL, },
2132 };
2133
2134 static int set_debug(const char *string)
2135 {
2136         struct debug_level *dl;
2137         char *p = (char *) string;
2138         char *opt;
2139         int i;
2140
2141         if (!string)
2142                 return 0;
2143
2144         if (!strcmp(string, "?") || !strcmp(string, "help")) {
2145                 log_info("fio: dumping debug options:");
2146                 for (i = 0; debug_levels[i].name; i++) {
2147                         dl = &debug_levels[i];
2148                         log_info("%s,", dl->name);
2149                 }
2150                 log_info("all\n");
2151                 return 1;
2152         }
2153
2154         while ((opt = strsep(&p, ",")) != NULL) {
2155                 int found = 0;
2156
2157                 if (!strncmp(opt, "all", 3)) {
2158                         log_info("fio: set all debug options\n");
2159                         fio_debug = ~0UL;
2160                         continue;
2161                 }
2162
2163                 for (i = 0; debug_levels[i].name; i++) {
2164                         dl = &debug_levels[i];
2165                         found = !strncmp(opt, dl->name, strlen(dl->name));
2166                         if (!found)
2167                                 continue;
2168
2169                         if (dl->shift == FD_JOB) {
2170                                 opt = strchr(opt, ':');
2171                                 if (!opt) {
2172                                         log_err("fio: missing job number\n");
2173                                         break;
2174                                 }
2175                                 opt++;
2176                                 fio_debug_jobno = atoi(opt);
2177                                 log_info("fio: set debug jobno %d\n",
2178                                                         fio_debug_jobno);
2179                         } else {
2180                                 log_info("fio: set debug option %s\n", opt);
2181                                 fio_debug |= (1UL << dl->shift);
2182                         }
2183                         break;
2184                 }
2185
2186                 if (!found)
2187                         log_err("fio: debug mask %s not found\n", opt);
2188         }
2189         return 0;
2190 }
2191 #else
2192 static int set_debug(const char *string)
2193 {
2194         log_err("fio: debug tracing not included in build\n");
2195         return 1;
2196 }
2197 #endif
2198
2199 static void fio_options_fill_optstring(void)
2200 {
2201         char *ostr = cmd_optstr;
2202         int i, c;
2203
2204         c = i = 0;
2205         while (l_opts[i].name) {
2206                 ostr[c++] = l_opts[i].val;
2207                 if (l_opts[i].has_arg == required_argument)
2208                         ostr[c++] = ':';
2209                 else if (l_opts[i].has_arg == optional_argument) {
2210                         ostr[c++] = ':';
2211                         ostr[c++] = ':';
2212                 }
2213                 i++;
2214         }
2215         ostr[c] = '\0';
2216 }
2217
2218 static int client_flag_set(char c)
2219 {
2220         int i;
2221
2222         i = 0;
2223         while (l_opts[i].name) {
2224                 int val = l_opts[i].val;
2225
2226                 if (c == (val & 0xff))
2227                         return (val & FIO_CLIENT_FLAG);
2228
2229                 i++;
2230         }
2231
2232         return 0;
2233 }
2234
2235 static void parse_cmd_client(void *client, char *opt)
2236 {
2237         fio_client_add_cmd_option(client, opt);
2238 }
2239
2240 static void show_closest_option(const char *name)
2241 {
2242         int best_option, best_distance;
2243         int i, distance;
2244
2245         while (*name == '-')
2246                 name++;
2247
2248         best_option = -1;
2249         best_distance = INT_MAX;
2250         i = 0;
2251         while (l_opts[i].name) {
2252                 distance = string_distance(name, l_opts[i].name);
2253                 if (distance < best_distance) {
2254                         best_distance = distance;
2255                         best_option = i;
2256                 }
2257                 i++;
2258         }
2259
2260         if (best_option != -1 && string_distance_ok(name, best_distance))
2261                 log_err("Did you mean %s?\n", l_opts[best_option].name);
2262 }
2263
2264 static int parse_output_format(const char *optarg)
2265 {
2266         char *p, *orig, *opt;
2267         int ret = 0;
2268
2269         p = orig = strdup(optarg);
2270
2271         output_format = 0;
2272
2273         while ((opt = strsep(&p, ",")) != NULL) {
2274                 if (!strcmp(opt, "minimal") ||
2275                     !strcmp(opt, "terse") ||
2276                     !strcmp(opt, "csv"))
2277                         output_format |= FIO_OUTPUT_TERSE;
2278                 else if (!strcmp(opt, "json"))
2279                         output_format |= FIO_OUTPUT_JSON;
2280                 else if (!strcmp(opt, "json+"))
2281                         output_format |= (FIO_OUTPUT_JSON | FIO_OUTPUT_JSON_PLUS);
2282                 else if (!strcmp(opt, "normal"))
2283                         output_format |= FIO_OUTPUT_NORMAL;
2284                 else {
2285                         log_err("fio: invalid output format %s\n", opt);
2286                         ret = 1;
2287                         break;
2288                 }
2289         }
2290
2291         free(orig);
2292         return ret;
2293 }
2294
2295 int parse_cmd_line(int argc, char *argv[], int client_type)
2296 {
2297         struct thread_data *td = NULL;
2298         int c, ini_idx = 0, lidx, ret = 0, do_exit = 0, exit_val = 0;
2299         char *ostr = cmd_optstr;
2300         char *pid_file = NULL;
2301         void *cur_client = NULL;
2302         int backend = 0;
2303
2304         /*
2305          * Reset optind handling, since we may call this multiple times
2306          * for the backend.
2307          */
2308         optind = 1;
2309
2310         while ((c = getopt_long_only(argc, argv, ostr, l_opts, &lidx)) != -1) {
2311                 if ((c & FIO_CLIENT_FLAG) || client_flag_set(c)) {
2312                         parse_cmd_client(cur_client, argv[optind - 1]);
2313                         c &= ~FIO_CLIENT_FLAG;
2314                 }
2315
2316                 switch (c) {
2317                 case 'a':
2318                         smalloc_pool_size = atoi(optarg);
2319                         smalloc_pool_size <<= 10;
2320                         sinit();
2321                         break;
2322                 case 'l':
2323                         log_err("fio: --latency-log is deprecated. Use per-job latency log options.\n");
2324                         do_exit++;
2325                         exit_val = 1;
2326                         break;
2327                 case 'b':
2328                         write_bw_log = 1;
2329                         break;
2330                 case 'o': {
2331                         FILE *tmp;
2332
2333                         if (f_out && f_out != stdout)
2334                                 fclose(f_out);
2335
2336                         tmp = fopen(optarg, "w+");
2337                         if (!tmp) {
2338                                 log_err("fio: output file open error: %s\n", strerror(errno));
2339                                 exit_val = 1;
2340                                 do_exit++;
2341                                 break;
2342                         }
2343                         f_err = f_out = tmp;
2344                         break;
2345                         }
2346                 case 'm':
2347                         output_format = FIO_OUTPUT_TERSE;
2348                         break;
2349                 case 'F':
2350                         if (parse_output_format(optarg)) {
2351                                 log_err("fio: failed parsing output-format\n");
2352                                 exit_val = 1;
2353                                 do_exit++;
2354                                 break;
2355                         }
2356                         break;
2357                 case 'f':
2358                         output_format |= FIO_OUTPUT_TERSE;
2359                         break;
2360                 case 'h':
2361                         did_arg = 1;
2362                         if (!cur_client) {
2363                                 usage(argv[0]);
2364                                 do_exit++;
2365                         }
2366                         break;
2367                 case 'c':
2368                         did_arg = 1;
2369                         if (!cur_client) {
2370                                 fio_show_option_help(optarg);
2371                                 do_exit++;
2372                         }
2373                         break;
2374                 case 'i':
2375                         did_arg = 1;
2376                         if (!cur_client) {
2377                                 fio_show_ioengine_help(optarg);
2378                                 do_exit++;
2379                         }
2380                         break;
2381                 case 's':
2382                         did_arg = 1;
2383                         dump_cmdline = 1;
2384                         break;
2385                 case 'r':
2386                         read_only = 1;
2387                         break;
2388                 case 'v':
2389                         did_arg = 1;
2390                         if (!cur_client) {
2391                                 log_info("%s\n", fio_version_string);
2392                                 do_exit++;
2393                         }
2394                         break;
2395                 case 'V':
2396                         terse_version = atoi(optarg);
2397                         if (!(terse_version == 2 || terse_version == 3 ||
2398                              terse_version == 4)) {
2399                                 log_err("fio: bad terse version format\n");
2400                                 exit_val = 1;
2401                                 do_exit++;
2402                         }
2403                         break;
2404                 case 'e':
2405                         if (!strcmp("always", optarg))
2406                                 eta_print = FIO_ETA_ALWAYS;
2407                         else if (!strcmp("never", optarg))
2408                                 eta_print = FIO_ETA_NEVER;
2409                         break;
2410                 case 'E': {
2411                         long long t = 0;
2412
2413                         if (check_str_time(optarg, &t, 1)) {
2414                                 log_err("fio: failed parsing eta time %s\n", optarg);
2415                                 exit_val = 1;
2416                                 do_exit++;
2417                         }
2418                         eta_new_line = t / 1000;
2419                         break;
2420                         }
2421                 case 'd':
2422                         if (set_debug(optarg))
2423                                 do_exit++;
2424                         break;
2425                 case 'P':
2426                         did_arg = 1;
2427                         parse_only = 1;
2428                         break;
2429                 case 'x': {
2430                         size_t new_size;
2431
2432                         if (!strcmp(optarg, "global")) {
2433                                 log_err("fio: can't use global as only "
2434                                         "section\n");
2435                                 do_exit++;
2436                                 exit_val = 1;
2437                                 break;
2438                         }
2439                         new_size = (nr_job_sections + 1) * sizeof(char *);
2440                         job_sections = realloc(job_sections, new_size);
2441                         job_sections[nr_job_sections] = strdup(optarg);
2442                         nr_job_sections++;
2443                         break;
2444                         }
2445 #ifdef CONFIG_ZLIB
2446                 case 'X':
2447                         exit_val = iolog_file_inflate(optarg);
2448                         did_arg++;
2449                         do_exit++;
2450                         break;
2451 #endif
2452                 case 'p':
2453                         did_arg = 1;
2454                         if (exec_profile)
2455                                 free(exec_profile);
2456                         exec_profile = strdup(optarg);
2457                         break;
2458                 case FIO_GETOPT_JOB: {
2459                         const char *opt = l_opts[lidx].name;
2460                         char *val = optarg;
2461
2462                         if (!strncmp(opt, "name", 4) && td) {
2463                                 ret = add_job(td, td->o.name ?: "fio", 0, 0, client_type);
2464                                 if (ret)
2465                                         goto out_free;
2466                                 td = NULL;
2467                                 did_arg = 1;
2468                         }
2469                         if (!td) {
2470                                 int is_section = !strncmp(opt, "name", 4);
2471                                 int global = 0;
2472
2473                                 if (!is_section || !strncmp(val, "global", 6))
2474                                         global = 1;
2475
2476                                 if (is_section && skip_this_section(val))
2477                                         continue;
2478
2479                                 td = get_new_job(global, &def_thread, true, NULL);
2480                                 if (!td || ioengine_load(td)) {
2481                                         if (td) {
2482                                                 put_job(td);
2483                                                 td = NULL;
2484                                         }
2485                                         do_exit++;
2486                                         exit_val = 1;
2487                                         break;
2488                                 }
2489                                 fio_options_set_ioengine_opts(l_opts, td);
2490                         }
2491
2492                         if ((!val || !strlen(val)) &&
2493                             l_opts[lidx].has_arg == required_argument) {
2494                                 log_err("fio: option %s requires an argument\n", opt);
2495                                 ret = 1;
2496                         } else
2497                                 ret = fio_cmd_option_parse(td, opt, val);
2498
2499                         if (ret) {
2500                                 if (td) {
2501                                         put_job(td);
2502                                         td = NULL;
2503                                 }
2504                                 do_exit++;
2505                                 exit_val = 1;
2506                         }
2507
2508                         if (!ret && !strcmp(opt, "ioengine")) {
2509                                 free_ioengine(td);
2510                                 if (ioengine_load(td)) {
2511                                         put_job(td);
2512                                         td = NULL;
2513                                         do_exit++;
2514                                         exit_val = 1;
2515                                         break;
2516                                 }
2517                                 fio_options_set_ioengine_opts(l_opts, td);
2518                         }
2519                         break;
2520                 }
2521                 case FIO_GETOPT_IOENGINE: {
2522                         const char *opt = l_opts[lidx].name;
2523                         char *val = optarg;
2524
2525                         if (!td)
2526                                 break;
2527
2528                         ret = fio_cmd_ioengine_option_parse(td, opt, val);
2529                         break;
2530                 }
2531                 case 'w':
2532                         warnings_fatal = 1;
2533                         break;
2534                 case 'j':
2535                         max_jobs = atoi(optarg);
2536                         if (!max_jobs || max_jobs > REAL_MAX_JOBS) {
2537                                 log_err("fio: invalid max jobs: %d\n", max_jobs);
2538                                 do_exit++;
2539                                 exit_val = 1;
2540                         }
2541                         break;
2542                 case 'S':
2543                         did_arg = 1;
2544 #ifndef CONFIG_NO_SHM
2545                         if (nr_clients) {
2546                                 log_err("fio: can't be both client and server\n");
2547                                 do_exit++;
2548                                 exit_val = 1;
2549                                 break;
2550                         }
2551                         if (optarg)
2552                                 fio_server_set_arg(optarg);
2553                         is_backend = 1;
2554                         backend = 1;
2555 #else
2556                         log_err("fio: client/server requires SHM support\n");
2557                         do_exit++;
2558                         exit_val = 1;
2559 #endif
2560                         break;
2561                 case 'D':
2562                         if (pid_file)
2563                                 free(pid_file);
2564                         pid_file = strdup(optarg);
2565                         break;
2566                 case 'I':
2567                         if ((ret = fio_idle_prof_parse_opt(optarg))) {
2568                                 /* exit on error and calibration only */
2569                                 did_arg = 1;
2570                                 do_exit++;
2571                                 if (ret == -1)
2572                                         exit_val = 1;
2573                         }
2574                         break;
2575                 case 'C':
2576                         did_arg = 1;
2577                         if (is_backend) {
2578                                 log_err("fio: can't be both client and server\n");
2579                                 do_exit++;
2580                                 exit_val = 1;
2581                                 break;
2582                         }
2583                         /* if --client parameter contains a pathname */
2584                         if (0 == access(optarg, R_OK)) {
2585                                 /* file contains a list of host addrs or names */
2586                                 char hostaddr[PATH_MAX] = {0};
2587                                 char formatstr[8];
2588                                 FILE * hostf = fopen(optarg, "r");
2589                                 if (!hostf) {
2590                                         log_err("fio: could not open client list file %s for read\n", optarg);
2591                                         do_exit++;
2592                                         exit_val = 1;
2593                                         break;
2594                                 }
2595                                 sprintf(formatstr, "%%%ds", PATH_MAX - 1);
2596                                 /*
2597                                  * read at most PATH_MAX-1 chars from each
2598                                  * record in this file
2599                                  */
2600                                 while (fscanf(hostf, formatstr, hostaddr) == 1) {
2601                                         /* expect EVERY host in file to be valid */
2602                                         if (fio_client_add(&fio_client_ops, hostaddr, &cur_client)) {
2603                                                 log_err("fio: failed adding client %s from file %s\n", hostaddr, optarg);
2604                                                 do_exit++;
2605                                                 exit_val = 1;
2606                                                 break;
2607                                         }
2608                                 }
2609                                 fclose(hostf);
2610                                 break; /* no possibility of job file for "this client only" */
2611                         }
2612                         if (fio_client_add(&fio_client_ops, optarg, &cur_client)) {
2613                                 log_err("fio: failed adding client %s\n", optarg);
2614                                 do_exit++;
2615                                 exit_val = 1;
2616                                 break;
2617                         }
2618                         /*
2619                          * If the next argument exists and isn't an option,
2620                          * assume it's a job file for this client only.
2621                          */
2622                         while (optind < argc) {
2623                                 if (!strncmp(argv[optind], "--", 2) ||
2624                                     !strncmp(argv[optind], "-", 1))
2625                                         break;
2626
2627                                 if (fio_client_add_ini_file(cur_client, argv[optind], false))
2628                                         break;
2629                                 optind++;
2630                         }
2631                         break;
2632                 case 'R':
2633                         did_arg = 1;
2634                         if (fio_client_add_ini_file(cur_client, optarg, true)) {
2635                                 do_exit++;
2636                                 exit_val = 1;
2637                         }
2638                         break;
2639                 case 'T':
2640                         did_arg = 1;
2641                         do_exit++;
2642                         exit_val = fio_monotonic_clocktest(1);
2643                         break;
2644                 case 'G':
2645                         did_arg = 1;
2646                         do_exit++;
2647                         exit_val = fio_crctest(optarg);
2648                         break;
2649                 case 'L': {
2650                         long long val;
2651
2652                         if (check_str_time(optarg, &val, 1)) {
2653                                 log_err("fio: failed parsing time %s\n", optarg);
2654                                 do_exit++;
2655                                 exit_val = 1;
2656                                 break;
2657                         }
2658                         status_interval = val / 1000;
2659                         break;
2660                         }
2661                 case 'W':
2662                         if (trigger_file)
2663                                 free(trigger_file);
2664                         trigger_file = strdup(optarg);
2665                         break;
2666                 case 'H':
2667                         if (trigger_cmd)
2668                                 free(trigger_cmd);
2669                         trigger_cmd = strdup(optarg);
2670                         break;
2671                 case 'J':
2672                         if (trigger_remote_cmd)
2673                                 free(trigger_remote_cmd);
2674                         trigger_remote_cmd = strdup(optarg);
2675                         break;
2676                 case 'K':
2677                         if (aux_path)
2678                                 free(aux_path);
2679                         aux_path = strdup(optarg);
2680                         break;
2681                 case 'B':
2682                         if (check_str_time(optarg, &trigger_timeout, 1)) {
2683                                 log_err("fio: failed parsing time %s\n", optarg);
2684                                 do_exit++;
2685                                 exit_val = 1;
2686                         }
2687                         trigger_timeout /= 1000000;
2688                         break;
2689                 case '?':
2690                         log_err("%s: unrecognized option '%s'\n", argv[0],
2691                                                         argv[optind - 1]);
2692                         show_closest_option(argv[optind - 1]);
2693                 default:
2694                         do_exit++;
2695                         exit_val = 1;
2696                         break;
2697                 }
2698                 if (do_exit)
2699                         break;
2700         }
2701
2702         if (do_exit && !(is_backend || nr_clients))
2703                 exit(exit_val);
2704
2705         if (nr_clients && fio_clients_connect())
2706                 exit(1);
2707
2708         if (is_backend && backend)
2709                 return fio_start_server(pid_file);
2710         else if (pid_file)
2711                 free(pid_file);
2712
2713         if (td) {
2714                 if (!ret) {
2715                         ret = add_job(td, td->o.name ?: "fio", 0, 0, client_type);
2716                         if (ret)
2717                                 exit(1);
2718                 }
2719         }
2720
2721         while (!ret && optind < argc) {
2722                 ini_idx++;
2723                 ini_file = realloc(ini_file, ini_idx * sizeof(char *));
2724                 ini_file[ini_idx - 1] = strdup(argv[optind]);
2725                 optind++;
2726         }
2727
2728 out_free:
2729         return ini_idx;
2730 }
2731
2732 int fio_init_options(void)
2733 {
2734         f_out = stdout;
2735         f_err = stderr;
2736
2737         fio_options_fill_optstring();
2738         fio_options_dup_and_init(l_opts);
2739
2740         atexit(free_shm);
2741
2742         if (fill_def_thread())
2743                 return 1;
2744
2745         return 0;
2746 }
2747
2748 extern int fio_check_options(struct thread_options *);
2749
2750 int parse_options(int argc, char *argv[])
2751 {
2752         const int type = FIO_CLIENT_TYPE_CLI;
2753         int job_files, i;
2754
2755         if (fio_init_options())
2756                 return 1;
2757         if (fio_test_cconv(&def_thread.o))
2758                 log_err("fio: failed internal cconv test\n");
2759
2760         job_files = parse_cmd_line(argc, argv, type);
2761
2762         if (job_files > 0) {
2763                 for (i = 0; i < job_files; i++) {
2764                         if (i && fill_def_thread())
2765                                 return 1;
2766                         if (nr_clients) {
2767                                 if (fio_clients_send_ini(ini_file[i]))
2768                                         return 1;
2769                                 free(ini_file[i]);
2770                         } else if (!is_backend) {
2771                                 if (parse_jobs_ini(ini_file[i], 0, i, type))
2772                                         return 1;
2773                                 free(ini_file[i]);
2774                         }
2775                 }
2776         } else if (nr_clients) {
2777                 if (fill_def_thread())
2778                         return 1;
2779                 if (fio_clients_send_ini(NULL))
2780                         return 1;
2781         }
2782
2783         free(ini_file);
2784         fio_options_free(&def_thread);
2785         filesetup_mem_free();
2786
2787         if (!thread_number) {
2788                 if (parse_dryrun())
2789                         return 0;
2790                 if (exec_profile)
2791                         return 0;
2792                 if (is_backend || nr_clients)
2793                         return 0;
2794                 if (did_arg)
2795                         return 0;
2796
2797                 log_err("No job(s) defined\n\n");
2798
2799                 if (!did_arg) {
2800                         usage(argv[0]);
2801                         return 1;
2802                 }
2803
2804                 return 0;
2805         }
2806
2807         if (output_format & FIO_OUTPUT_NORMAL)
2808                 log_info("%s\n", fio_version_string);
2809
2810         return 0;
2811 }
2812
2813 void options_default_fill(struct thread_options *o)
2814 {
2815         memcpy(o, &def_thread.o, sizeof(*o));
2816 }
2817
2818 struct thread_data *get_global_options(void)
2819 {
2820         return &def_thread;
2821 }