init.c revision 2615cc4b28e7d0e436a625dff92e6a71ccc6c49b
1/* 2 * This file contains job initialization and setup functions. 3 */ 4#include <stdio.h> 5#include <stdlib.h> 6#include <unistd.h> 7#include <fcntl.h> 8#include <ctype.h> 9#include <string.h> 10#include <errno.h> 11#include <sys/ipc.h> 12#include <sys/shm.h> 13#include <sys/types.h> 14#include <sys/stat.h> 15 16#include "fio.h" 17#include "parse.h" 18#include "smalloc.h" 19#include "filehash.h" 20#include "verify.h" 21#include "profile.h" 22 23#include "lib/getopt.h" 24 25static char fio_version_string[] = "fio 1.51"; 26 27#define FIO_RANDSEED (0xb1899bedUL) 28 29static char **ini_file; 30static int max_jobs = MAX_JOBS; 31static int dump_cmdline; 32 33static struct thread_data def_thread; 34struct thread_data *threads = NULL; 35 36int exitall_on_terminate = 0; 37int terse_output = 0; 38int eta_print; 39unsigned long long mlock_size = 0; 40FILE *f_out = NULL; 41FILE *f_err = NULL; 42char **job_sections = NULL; 43int nr_job_sections = 0; 44char *exec_profile = NULL; 45int warnings_fatal = 0; 46 47int write_bw_log = 0; 48int read_only = 0; 49 50static int def_timeout; 51static int write_lat_log; 52 53static int prev_group_jobs; 54 55unsigned long fio_debug = 0; 56unsigned int fio_debug_jobno = -1; 57unsigned int *fio_debug_jobp = NULL; 58 59static char cmd_optstr[256]; 60 61/* 62 * Command line options. These will contain the above, plus a few 63 * extra that only pertain to fio itself and not jobs. 64 */ 65static struct option l_opts[FIO_NR_OPTIONS] = { 66 { 67 .name = "output", 68 .has_arg = required_argument, 69 .val = 'o', 70 }, 71 { 72 .name = "timeout", 73 .has_arg = required_argument, 74 .val = 't', 75 }, 76 { 77 .name = "latency-log", 78 .has_arg = required_argument, 79 .val = 'l', 80 }, 81 { 82 .name = "bandwidth-log", 83 .has_arg = required_argument, 84 .val = 'b', 85 }, 86 { 87 .name = "minimal", 88 .has_arg = optional_argument, 89 .val = 'm', 90 }, 91 { 92 .name = "version", 93 .has_arg = no_argument, 94 .val = 'v', 95 }, 96 { 97 .name = "help", 98 .has_arg = no_argument, 99 .val = 'h', 100 }, 101 { 102 .name = "cmdhelp", 103 .has_arg = optional_argument, 104 .val = 'c', 105 }, 106 { 107 .name = "showcmd", 108 .has_arg = no_argument, 109 .val = 's', 110 }, 111 { 112 .name = "readonly", 113 .has_arg = no_argument, 114 .val = 'r', 115 }, 116 { 117 .name = "eta", 118 .has_arg = required_argument, 119 .val = 'e', 120 }, 121 { 122 .name = "debug", 123 .has_arg = required_argument, 124 .val = 'd', 125 }, 126 { 127 .name = "section", 128 .has_arg = required_argument, 129 .val = 'x', 130 }, 131 { 132 .name = "alloc-size", 133 .has_arg = required_argument, 134 .val = 'a', 135 }, 136 { 137 .name = "profile", 138 .has_arg = required_argument, 139 .val = 'p', 140 }, 141 { 142 .name = "warnings-fatal", 143 .has_arg = no_argument, 144 .val = 'w', 145 }, 146 { 147 .name = NULL, 148 }, 149}; 150 151FILE *get_f_out() 152{ 153 return f_out; 154} 155 156FILE *get_f_err() 157{ 158 return f_err; 159} 160 161/* 162 * Return a free job structure. 163 */ 164static struct thread_data *get_new_job(int global, struct thread_data *parent) 165{ 166 struct thread_data *td; 167 168 if (global) 169 return &def_thread; 170 if (thread_number >= max_jobs) { 171 log_err("error: maximum number of jobs (%d) reached.\n", 172 max_jobs); 173 return NULL; 174 } 175 176 td = &threads[thread_number++]; 177 *td = *parent; 178 179 td->o.uid = td->o.gid = -1U; 180 181 dup_files(td, parent); 182 options_mem_dupe(td); 183 184 profile_add_hooks(td); 185 186 td->thread_number = thread_number; 187 return td; 188} 189 190static void put_job(struct thread_data *td) 191{ 192 if (td == &def_thread) 193 return; 194 195 profile_td_exit(td); 196 197 if (td->error) 198 log_info("fio: %s\n", td->verror); 199 200 memset(&threads[td->thread_number - 1], 0, sizeof(*td)); 201 thread_number--; 202} 203 204static int __setup_rate(struct thread_data *td, enum fio_ddir ddir) 205{ 206 unsigned int bs = td->o.min_bs[ddir]; 207 unsigned long long bytes_per_sec; 208 209 assert(ddir_rw(ddir)); 210 211 if (td->o.rate[ddir]) 212 bytes_per_sec = td->o.rate[ddir]; 213 else 214 bytes_per_sec = td->o.rate_iops[ddir] * bs; 215 216 if (!bytes_per_sec) { 217 log_err("rate lower than supported\n"); 218 return -1; 219 } 220 221 td->rate_nsec_cycle[ddir] = 1000000000ULL / bytes_per_sec; 222 td->rate_pending_usleep[ddir] = 0; 223 return 0; 224} 225 226static int setup_rate(struct thread_data *td) 227{ 228 int ret = 0; 229 230 if (td->o.rate[DDIR_READ] || td->o.rate_iops[DDIR_READ]) 231 ret = __setup_rate(td, DDIR_READ); 232 if (td->o.rate[DDIR_WRITE] || td->o.rate_iops[DDIR_WRITE]) 233 ret |= __setup_rate(td, DDIR_WRITE); 234 235 return ret; 236} 237 238static int fixed_block_size(struct thread_options *o) 239{ 240 return o->min_bs[DDIR_READ] == o->max_bs[DDIR_READ] && 241 o->min_bs[DDIR_WRITE] == o->max_bs[DDIR_WRITE] && 242 o->min_bs[DDIR_READ] == o->min_bs[DDIR_WRITE]; 243} 244 245/* 246 * Lazy way of fixing up options that depend on each other. We could also 247 * define option callback handlers, but this is easier. 248 */ 249static int fixup_options(struct thread_data *td) 250{ 251 struct thread_options *o = &td->o; 252 int ret = 0; 253 254#ifndef FIO_HAVE_PSHARED_MUTEX 255 if (!o->use_thread) { 256 log_info("fio: this platform does not support process shared" 257 " mutexes, forcing use of threads. Use the 'thread'" 258 " option to get rid of this warning.\n"); 259 o->use_thread = 1; 260 ret = warnings_fatal; 261 } 262#endif 263 264 if (o->write_iolog_file && o->read_iolog_file) { 265 log_err("fio: read iolog overrides write_iolog\n"); 266 free(o->write_iolog_file); 267 o->write_iolog_file = NULL; 268 ret = warnings_fatal; 269 } 270 271 /* 272 * only really works for sequential io for now, and with 1 file 273 */ 274 if (o->zone_size && td_random(td) && o->open_files == 1) 275 o->zone_size = 0; 276 277 /* 278 * Reads can do overwrites, we always need to pre-create the file 279 */ 280 if (td_read(td) || td_rw(td)) 281 o->overwrite = 1; 282 283 if (!o->min_bs[DDIR_READ]) 284 o->min_bs[DDIR_READ] = o->bs[DDIR_READ]; 285 if (!o->max_bs[DDIR_READ]) 286 o->max_bs[DDIR_READ] = o->bs[DDIR_READ]; 287 if (!o->min_bs[DDIR_WRITE]) 288 o->min_bs[DDIR_WRITE] = o->bs[DDIR_WRITE]; 289 if (!o->max_bs[DDIR_WRITE]) 290 o->max_bs[DDIR_WRITE] = o->bs[DDIR_WRITE]; 291 292 o->rw_min_bs = min(o->min_bs[DDIR_READ], o->min_bs[DDIR_WRITE]); 293 294 /* 295 * For random IO, allow blockalign offset other than min_bs. 296 */ 297 if (!o->ba[DDIR_READ] || !td_random(td)) 298 o->ba[DDIR_READ] = o->min_bs[DDIR_READ]; 299 if (!o->ba[DDIR_WRITE] || !td_random(td)) 300 o->ba[DDIR_WRITE] = o->min_bs[DDIR_WRITE]; 301 302 if ((o->ba[DDIR_READ] != o->min_bs[DDIR_READ] || 303 o->ba[DDIR_WRITE] != o->min_bs[DDIR_WRITE]) && 304 !o->norandommap) { 305 log_err("fio: Any use of blockalign= turns off randommap\n"); 306 o->norandommap = 1; 307 ret = warnings_fatal; 308 } 309 310 if (!o->file_size_high) 311 o->file_size_high = o->file_size_low; 312 313 if (o->norandommap && o->verify != VERIFY_NONE 314 && !fixed_block_size(o)) { 315 log_err("fio: norandommap given for variable block sizes, " 316 "verify disabled\n"); 317 o->verify = VERIFY_NONE; 318 ret = warnings_fatal; 319 } 320 if (o->bs_unaligned && (o->odirect || td->io_ops->flags & FIO_RAWIO)) 321 log_err("fio: bs_unaligned may not work with raw io\n"); 322 323 /* 324 * thinktime_spin must be less than thinktime 325 */ 326 if (o->thinktime_spin > o->thinktime) 327 o->thinktime_spin = o->thinktime; 328 329 /* 330 * The low water mark cannot be bigger than the iodepth 331 */ 332 if (o->iodepth_low > o->iodepth || !o->iodepth_low) { 333 /* 334 * syslet work around - if the workload is sequential, 335 * we want to let the queue drain all the way down to 336 * avoid seeking between async threads 337 */ 338 if (!strcmp(td->io_ops->name, "syslet-rw") && !td_random(td)) 339 o->iodepth_low = 1; 340 else 341 o->iodepth_low = o->iodepth; 342 } 343 344 /* 345 * If batch number isn't set, default to the same as iodepth 346 */ 347 if (o->iodepth_batch > o->iodepth || !o->iodepth_batch) 348 o->iodepth_batch = o->iodepth; 349 350 if (o->nr_files > td->files_index) 351 o->nr_files = td->files_index; 352 353 if (o->open_files > o->nr_files || !o->open_files) 354 o->open_files = o->nr_files; 355 356 if (((o->rate[0] + o->rate[1]) && (o->rate_iops[0] + o->rate_iops[1]))|| 357 ((o->ratemin[0] + o->ratemin[1]) && (o->rate_iops_min[0] + 358 o->rate_iops_min[1]))) { 359 log_err("fio: rate and rate_iops are mutually exclusive\n"); 360 ret = 1; 361 } 362 if ((o->rate[0] < o->ratemin[0]) || (o->rate[1] < o->ratemin[1]) || 363 (o->rate_iops[0] < o->rate_iops_min[0]) || 364 (o->rate_iops[1] < o->rate_iops_min[1])) { 365 log_err("fio: minimum rate exceeds rate\n"); 366 ret = 1; 367 } 368 369 if (!o->timeout && o->time_based) { 370 log_err("fio: time_based requires a runtime/timeout setting\n"); 371 o->time_based = 0; 372 ret = warnings_fatal; 373 } 374 375 if (o->fill_device && !o->size) 376 o->size = -1ULL; 377 378 if (o->verify != VERIFY_NONE) { 379 if (td_write(td) && o->do_verify && o->numjobs > 1) { 380 log_info("Multiple writers may overwrite blocks that " 381 "belong to other jobs. This can cause " 382 "verification failures.\n"); 383 ret = warnings_fatal; 384 } 385 386 o->refill_buffers = 1; 387 if (o->max_bs[DDIR_WRITE] != o->min_bs[DDIR_WRITE] && 388 !o->verify_interval) 389 o->verify_interval = o->min_bs[DDIR_WRITE]; 390 } 391 392 if (o->pre_read) { 393 o->invalidate_cache = 0; 394 if (td->io_ops->flags & FIO_PIPEIO) { 395 log_info("fio: cannot pre-read files with an IO engine" 396 " that isn't seekable. Pre-read disabled.\n"); 397 ret = warnings_fatal; 398 } 399 } 400 401#ifndef FIO_HAVE_FDATASYNC 402 if (o->fdatasync_blocks) { 403 log_info("fio: this platform does not support fdatasync()" 404 " falling back to using fsync(). Use the 'fsync'" 405 " option instead of 'fdatasync' to get rid of" 406 " this warning\n"); 407 o->fsync_blocks = o->fdatasync_blocks; 408 o->fdatasync_blocks = 0; 409 ret = warnings_fatal; 410 } 411#endif 412 413 return ret; 414} 415 416/* 417 * This function leaks the buffer 418 */ 419static char *to_kmg(unsigned int val) 420{ 421 char *buf = malloc(32); 422 char post[] = { 0, 'K', 'M', 'G', 'P', 'E', 0 }; 423 char *p = post; 424 425 do { 426 if (val & 1023) 427 break; 428 429 val >>= 10; 430 p++; 431 } while (*p); 432 433 snprintf(buf, 31, "%u%c", val, *p); 434 return buf; 435} 436 437/* External engines are specified by "external:name.o") */ 438static const char *get_engine_name(const char *str) 439{ 440 char *p = strstr(str, ":"); 441 442 if (!p) 443 return str; 444 445 p++; 446 strip_blank_front(&p); 447 strip_blank_end(p); 448 return p; 449} 450 451static int exists_and_not_file(const char *filename) 452{ 453 struct stat sb; 454 455 if (lstat(filename, &sb) == -1) 456 return 0; 457 458 /* \\.\ is the device namespace in Windows, where every file 459 * is a device node */ 460 if (S_ISREG(sb.st_mode) && strncmp(filename, "\\\\.\\", 4) != 0) 461 return 0; 462 463 return 1; 464} 465 466void td_fill_rand_seeds(struct thread_data *td) 467{ 468 os_random_seed(td->rand_seeds[0], &td->bsrange_state); 469 os_random_seed(td->rand_seeds[1], &td->verify_state); 470 os_random_seed(td->rand_seeds[2], &td->rwmix_state); 471 472 if (td->o.file_service_type == FIO_FSERVICE_RANDOM) 473 os_random_seed(td->rand_seeds[3], &td->next_file_state); 474 475 os_random_seed(td->rand_seeds[5], &td->file_size_state); 476 os_random_seed(td->rand_seeds[6], &td->trim_state); 477 478 if (!td_random(td)) 479 return; 480 481 if (td->o.rand_repeatable) 482 td->rand_seeds[4] = FIO_RANDSEED * td->thread_number; 483 484 os_random_seed(td->rand_seeds[4], &td->random_state); 485 init_rand_seed(&td->__random_state, td->rand_seeds[4]); 486} 487 488/* 489 * Initialize the various random states we need (random io, block size ranges, 490 * read/write mix, etc). 491 */ 492static int init_random_state(struct thread_data *td) 493{ 494 int fd; 495 496 fd = open("/dev/urandom", O_RDONLY); 497 if (fd == -1) { 498 td_verror(td, errno, "open"); 499 return 1; 500 } 501 502 if (read(fd, td->rand_seeds, sizeof(td->rand_seeds)) < 503 (int) sizeof(td->rand_seeds)) { 504 td_verror(td, EIO, "read"); 505 close(fd); 506 return 1; 507 } 508 509 close(fd); 510 td_fill_rand_seeds(td); 511 return 0; 512} 513 514/* 515 * Adds a job to the list of things todo. Sanitizes the various options 516 * to make sure we don't have conflicts, and initializes various 517 * members of td. 518 */ 519static int add_job(struct thread_data *td, const char *jobname, int job_add_num) 520{ 521 const char *ddir_str[] = { NULL, "read", "write", "rw", NULL, 522 "randread", "randwrite", "randrw" }; 523 unsigned int i; 524 const char *engine; 525 char fname[PATH_MAX]; 526 int numjobs, file_alloced; 527 528 /* 529 * the def_thread is just for options, it's not a real job 530 */ 531 if (td == &def_thread) 532 return 0; 533 534 /* 535 * if we are just dumping the output command line, don't add the job 536 */ 537 if (dump_cmdline) { 538 put_job(td); 539 return 0; 540 } 541 542 if (profile_td_init(td)) 543 return 1; 544 545 engine = get_engine_name(td->o.ioengine); 546 td->io_ops = load_ioengine(td, engine); 547 if (!td->io_ops) { 548 log_err("fio: failed to load engine %s\n", engine); 549 goto err; 550 } 551 552 if (td->o.use_thread) 553 nr_thread++; 554 else 555 nr_process++; 556 557 if (td->o.odirect) 558 td->io_ops->flags |= FIO_RAWIO; 559 560 file_alloced = 0; 561 if (!td->o.filename && !td->files_index && !td->o.read_iolog_file) { 562 file_alloced = 1; 563 564 if (td->o.nr_files == 1 && exists_and_not_file(jobname)) 565 add_file(td, jobname); 566 else { 567 for (i = 0; i < td->o.nr_files; i++) { 568 sprintf(fname, "%s.%d.%d", jobname, 569 td->thread_number, i); 570 add_file(td, fname); 571 } 572 } 573 } 574 575 if (fixup_options(td)) 576 goto err; 577 578 if (td->io_ops->flags & FIO_DISKLESSIO) { 579 struct fio_file *f; 580 581 for_each_file(td, f, i) 582 f->real_file_size = -1ULL; 583 } 584 585 td->mutex = fio_mutex_init(0); 586 587 td->ts.clat_stat[0].min_val = td->ts.clat_stat[1].min_val = ULONG_MAX; 588 td->ts.slat_stat[0].min_val = td->ts.slat_stat[1].min_val = ULONG_MAX; 589 td->ts.lat_stat[0].min_val = td->ts.lat_stat[1].min_val = ULONG_MAX; 590 td->ts.bw_stat[0].min_val = td->ts.bw_stat[1].min_val = ULONG_MAX; 591 td->ddir_seq_nr = td->o.ddir_seq_nr; 592 593 if ((td->o.stonewall || td->o.new_group) && prev_group_jobs) { 594 prev_group_jobs = 0; 595 groupid++; 596 } 597 598 td->groupid = groupid; 599 prev_group_jobs++; 600 601 if (init_random_state(td)) 602 goto err; 603 604 if (setup_rate(td)) 605 goto err; 606 607 if (td->o.write_lat_log) { 608 setup_log(&td->ts.lat_log); 609 setup_log(&td->ts.slat_log); 610 setup_log(&td->ts.clat_log); 611 } 612 if (td->o.write_bw_log) 613 setup_log(&td->ts.bw_log); 614 615 if (!td->o.name) 616 td->o.name = strdup(jobname); 617 618 if (!terse_output) { 619 if (!job_add_num) { 620 if (!strcmp(td->io_ops->name, "cpuio")) { 621 log_info("%s: ioengine=cpu, cpuload=%u," 622 " cpucycle=%u\n", td->o.name, 623 td->o.cpuload, 624 td->o.cpucycle); 625 } else { 626 char *c1, *c2, *c3, *c4; 627 628 c1 = to_kmg(td->o.min_bs[DDIR_READ]); 629 c2 = to_kmg(td->o.max_bs[DDIR_READ]); 630 c3 = to_kmg(td->o.min_bs[DDIR_WRITE]); 631 c4 = to_kmg(td->o.max_bs[DDIR_WRITE]); 632 633 log_info("%s: (g=%d): rw=%s, bs=%s-%s/%s-%s," 634 " ioengine=%s, iodepth=%u\n", 635 td->o.name, td->groupid, 636 ddir_str[td->o.td_ddir], 637 c1, c2, c3, c4, 638 td->io_ops->name, 639 td->o.iodepth); 640 641 free(c1); 642 free(c2); 643 free(c3); 644 free(c4); 645 } 646 } else if (job_add_num == 1) 647 log_info("...\n"); 648 } 649 650 /* 651 * recurse add identical jobs, clear numjobs and stonewall options 652 * as they don't apply to sub-jobs 653 */ 654 numjobs = td->o.numjobs; 655 while (--numjobs) { 656 struct thread_data *td_new = get_new_job(0, td); 657 658 if (!td_new) 659 goto err; 660 661 td_new->o.numjobs = 1; 662 td_new->o.stonewall = 0; 663 td_new->o.new_group = 0; 664 665 if (file_alloced) { 666 td_new->o.filename = NULL; 667 td_new->files_index = 0; 668 td_new->files_size = 0; 669 td_new->files = NULL; 670 } 671 672 job_add_num = numjobs - 1; 673 674 if (add_job(td_new, jobname, job_add_num)) 675 goto err; 676 } 677 678 return 0; 679err: 680 put_job(td); 681 return -1; 682} 683 684/* 685 * Parse as if 'o' was a command line 686 */ 687void add_job_opts(const char **o) 688{ 689 struct thread_data *td, *td_parent; 690 int i, in_global = 1; 691 char jobname[32]; 692 693 i = 0; 694 td_parent = td = NULL; 695 while (o[i]) { 696 if (!strncmp(o[i], "name", 4)) { 697 in_global = 0; 698 if (td) 699 add_job(td, jobname, 0); 700 td = NULL; 701 sprintf(jobname, "%s", o[i] + 5); 702 } 703 if (in_global && !td_parent) 704 td_parent = get_new_job(1, &def_thread); 705 else if (!in_global && !td) { 706 if (!td_parent) 707 td_parent = &def_thread; 708 td = get_new_job(0, td_parent); 709 } 710 if (in_global) 711 fio_options_parse(td_parent, (char **) &o[i], 1); 712 else 713 fio_options_parse(td, (char **) &o[i], 1); 714 i++; 715 } 716 717 if (td) 718 add_job(td, jobname, 0); 719} 720 721static int skip_this_section(const char *name) 722{ 723 int i; 724 725 if (!nr_job_sections) 726 return 0; 727 if (!strncmp(name, "global", 6)) 728 return 0; 729 730 for (i = 0; i < nr_job_sections; i++) 731 if (!strcmp(job_sections[i], name)) 732 return 0; 733 734 return 1; 735} 736 737static int is_empty_or_comment(char *line) 738{ 739 unsigned int i; 740 741 for (i = 0; i < strlen(line); i++) { 742 if (line[i] == ';') 743 return 1; 744 if (line[i] == '#') 745 return 1; 746 if (!isspace(line[i]) && !iscntrl(line[i])) 747 return 0; 748 } 749 750 return 1; 751} 752 753/* 754 * This is our [ini] type file parser. 755 */ 756static int parse_jobs_ini(char *file, int stonewall_flag) 757{ 758 unsigned int global; 759 struct thread_data *td; 760 char *string, *name; 761 FILE *f; 762 char *p; 763 int ret = 0, stonewall; 764 int first_sect = 1; 765 int skip_fgets = 0; 766 int inside_skip = 0; 767 char **opts; 768 int i, alloc_opts, num_opts; 769 770 if (!strcmp(file, "-")) 771 f = stdin; 772 else 773 f = fopen(file, "r"); 774 775 if (!f) { 776 perror("fopen job file"); 777 return 1; 778 } 779 780 string = malloc(4096); 781 782 /* 783 * it's really 256 + small bit, 280 should suffice 784 */ 785 name = malloc(280); 786 memset(name, 0, 280); 787 788 alloc_opts = 8; 789 opts = malloc(sizeof(char *) * alloc_opts); 790 num_opts = 0; 791 792 stonewall = stonewall_flag; 793 do { 794 /* 795 * if skip_fgets is set, we already have loaded a line we 796 * haven't handled. 797 */ 798 if (!skip_fgets) { 799 p = fgets(string, 4095, f); 800 if (!p) 801 break; 802 } 803 804 skip_fgets = 0; 805 strip_blank_front(&p); 806 strip_blank_end(p); 807 808 if (is_empty_or_comment(p)) 809 continue; 810 if (sscanf(p, "[%255s]", name) != 1) { 811 if (inside_skip) 812 continue; 813 log_err("fio: option <%s> outside of [] job section\n", 814 p); 815 break; 816 } 817 818 name[strlen(name) - 1] = '\0'; 819 820 if (skip_this_section(name)) { 821 inside_skip = 1; 822 continue; 823 } else 824 inside_skip = 0; 825 826 global = !strncmp(name, "global", 6); 827 828 if (dump_cmdline) { 829 if (first_sect) 830 log_info("fio "); 831 if (!global) 832 log_info("--name=%s ", name); 833 first_sect = 0; 834 } 835 836 td = get_new_job(global, &def_thread); 837 if (!td) { 838 ret = 1; 839 break; 840 } 841 842 /* 843 * Seperate multiple job files by a stonewall 844 */ 845 if (!global && stonewall) { 846 td->o.stonewall = stonewall; 847 stonewall = 0; 848 } 849 850 num_opts = 0; 851 memset(opts, 0, alloc_opts * sizeof(char *)); 852 853 while ((p = fgets(string, 4096, f)) != NULL) { 854 if (is_empty_or_comment(p)) 855 continue; 856 857 strip_blank_front(&p); 858 859 /* 860 * new section, break out and make sure we don't 861 * fgets() a new line at the top. 862 */ 863 if (p[0] == '[') { 864 skip_fgets = 1; 865 break; 866 } 867 868 strip_blank_end(p); 869 870 if (num_opts == alloc_opts) { 871 alloc_opts <<= 1; 872 opts = realloc(opts, 873 alloc_opts * sizeof(char *)); 874 } 875 876 opts[num_opts] = strdup(p); 877 num_opts++; 878 } 879 880 ret = fio_options_parse(td, opts, num_opts); 881 if (!ret) { 882 if (dump_cmdline) 883 for (i = 0; i < num_opts; i++) 884 log_info("--%s ", opts[i]); 885 886 ret = add_job(td, name, 0); 887 } else { 888 log_err("fio: job %s dropped\n", name); 889 put_job(td); 890 } 891 892 for (i = 0; i < num_opts; i++) 893 free(opts[i]); 894 num_opts = 0; 895 } while (!ret); 896 897 if (dump_cmdline) 898 log_info("\n"); 899 900 for (i = 0; i < num_opts; i++) 901 free(opts[i]); 902 903 free(string); 904 free(name); 905 free(opts); 906 if (f != stdin) 907 fclose(f); 908 return ret; 909} 910 911static int fill_def_thread(void) 912{ 913 memset(&def_thread, 0, sizeof(def_thread)); 914 915 fio_getaffinity(getpid(), &def_thread.o.cpumask); 916 917 /* 918 * fill default options 919 */ 920 fio_fill_default_options(&def_thread); 921 922 def_thread.o.timeout = def_timeout; 923 return 0; 924} 925 926static void free_shm(void) 927{ 928 struct shmid_ds sbuf; 929 930 if (threads) { 931 void *tp = threads; 932 933 threads = NULL; 934 file_hash_exit(); 935 fio_debug_jobp = NULL; 936 shmdt(tp); 937 shmctl(shm_id, IPC_RMID, &sbuf); 938 } 939 940 scleanup(); 941} 942 943/* 944 * The thread area is shared between the main process and the job 945 * threads/processes. So setup a shared memory segment that will hold 946 * all the job info. We use the end of the region for keeping track of 947 * open files across jobs, for file sharing. 948 */ 949static int setup_thread_area(void) 950{ 951 void *hash; 952 953 /* 954 * 1024 is too much on some machines, scale max_jobs if 955 * we get a failure that looks like too large a shm segment 956 */ 957 do { 958 size_t size = max_jobs * sizeof(struct thread_data); 959 960 size += file_hash_size; 961 size += sizeof(unsigned int); 962 963 shm_id = shmget(0, size, IPC_CREAT | 0600); 964 if (shm_id != -1) 965 break; 966 if (errno != EINVAL) { 967 perror("shmget"); 968 break; 969 } 970 971 max_jobs >>= 1; 972 } while (max_jobs); 973 974 if (shm_id == -1) 975 return 1; 976 977 threads = shmat(shm_id, NULL, 0); 978 if (threads == (void *) -1) { 979 perror("shmat"); 980 return 1; 981 } 982 983 memset(threads, 0, max_jobs * sizeof(struct thread_data)); 984 hash = (void *) threads + max_jobs * sizeof(struct thread_data); 985 fio_debug_jobp = (void *) hash + file_hash_size; 986 *fio_debug_jobp = -1; 987 file_hash_init(hash); 988 atexit(free_shm); 989 return 0; 990} 991 992static void usage(const char *name) 993{ 994 printf("%s [options] [job options] <job file(s)>\n", name); 995 printf("\t--debug=options\tEnable debug logging\n"); 996 printf("\t--output\tWrite output to file\n"); 997 printf("\t--timeout\tRuntime in seconds\n"); 998 printf("\t--latency-log\tGenerate per-job latency logs\n"); 999 printf("\t--bandwidth-log\tGenerate per-job bandwidth logs\n"); 1000 printf("\t--minimal\tMinimal (terse) output\n"); 1001 printf("\t--version\tPrint version info and exit\n"); 1002 printf("\t--help\t\tPrint this page\n"); 1003 printf("\t--cmdhelp=cmd\tPrint command help, \"all\" for all of" 1004 " them\n"); 1005 printf("\t--showcmd\tTurn a job file into command line options\n"); 1006 printf("\t--eta=when\tWhen ETA estimate should be printed\n"); 1007 printf("\t \tMay be \"always\", \"never\" or \"auto\"\n"); 1008 printf("\t--readonly\tTurn on safety read-only checks, preventing" 1009 " writes\n"); 1010 printf("\t--section=name\tOnly run specified section in job file\n"); 1011 printf("\t--alloc-size=kb\tSet smalloc pool to this size in kb" 1012 " (def 1024)\n"); 1013 printf("\t--warnings-fatal Fio parser warnings are fatal\n"); 1014 printf("\nFio was written by Jens Axboe <jens.axboe@oracle.com>"); 1015 printf("\n Jens Axboe <jaxboe@fusionio.com>\n"); 1016} 1017 1018#ifdef FIO_INC_DEBUG 1019struct debug_level debug_levels[] = { 1020 { .name = "process", .shift = FD_PROCESS, }, 1021 { .name = "file", .shift = FD_FILE, }, 1022 { .name = "io", .shift = FD_IO, }, 1023 { .name = "mem", .shift = FD_MEM, }, 1024 { .name = "blktrace", .shift = FD_BLKTRACE }, 1025 { .name = "verify", .shift = FD_VERIFY }, 1026 { .name = "random", .shift = FD_RANDOM }, 1027 { .name = "parse", .shift = FD_PARSE }, 1028 { .name = "diskutil", .shift = FD_DISKUTIL }, 1029 { .name = "job", .shift = FD_JOB }, 1030 { .name = "mutex", .shift = FD_MUTEX }, 1031 { .name = "profile", .shift = FD_PROFILE }, 1032 { .name = "time", .shift = FD_TIME }, 1033 { .name = NULL, }, 1034}; 1035 1036static int set_debug(const char *string) 1037{ 1038 struct debug_level *dl; 1039 char *p = (char *) string; 1040 char *opt; 1041 int i; 1042 1043 if (!strcmp(string, "?") || !strcmp(string, "help")) { 1044 log_info("fio: dumping debug options:"); 1045 for (i = 0; debug_levels[i].name; i++) { 1046 dl = &debug_levels[i]; 1047 log_info("%s,", dl->name); 1048 } 1049 log_info("all\n"); 1050 return 1; 1051 } 1052 1053 while ((opt = strsep(&p, ",")) != NULL) { 1054 int found = 0; 1055 1056 if (!strncmp(opt, "all", 3)) { 1057 log_info("fio: set all debug options\n"); 1058 fio_debug = ~0UL; 1059 continue; 1060 } 1061 1062 for (i = 0; debug_levels[i].name; i++) { 1063 dl = &debug_levels[i]; 1064 found = !strncmp(opt, dl->name, strlen(dl->name)); 1065 if (!found) 1066 continue; 1067 1068 if (dl->shift == FD_JOB) { 1069 opt = strchr(opt, ':'); 1070 if (!opt) { 1071 log_err("fio: missing job number\n"); 1072 break; 1073 } 1074 opt++; 1075 fio_debug_jobno = atoi(opt); 1076 log_info("fio: set debug jobno %d\n", 1077 fio_debug_jobno); 1078 } else { 1079 log_info("fio: set debug option %s\n", opt); 1080 fio_debug |= (1UL << dl->shift); 1081 } 1082 break; 1083 } 1084 1085 if (!found) 1086 log_err("fio: debug mask %s not found\n", opt); 1087 } 1088 return 0; 1089} 1090#else 1091static int set_debug(const char *string) 1092{ 1093 log_err("fio: debug tracing not included in build\n"); 1094 return 1; 1095} 1096#endif 1097 1098static void fio_options_fill_optstring(void) 1099{ 1100 char *ostr = cmd_optstr; 1101 int i, c; 1102 1103 c = i = 0; 1104 while (l_opts[i].name) { 1105 ostr[c++] = l_opts[i].val; 1106 if (l_opts[i].has_arg == required_argument) 1107 ostr[c++] = ':'; 1108 else if (l_opts[i].has_arg == optional_argument) { 1109 ostr[c++] = ':'; 1110 ostr[c++] = ':'; 1111 } 1112 i++; 1113 } 1114 ostr[c] = '\0'; 1115} 1116 1117static int parse_cmd_line(int argc, char *argv[]) 1118{ 1119 struct thread_data *td = NULL; 1120 int c, ini_idx = 0, lidx, ret = 0, do_exit = 0, exit_val = 0; 1121 char *ostr = cmd_optstr; 1122 1123 while ((c = getopt_long_only(argc, argv, ostr, l_opts, &lidx)) != -1) { 1124 switch (c) { 1125 case 'a': 1126 smalloc_pool_size = atoi(optarg); 1127 break; 1128 case 't': 1129 def_timeout = atoi(optarg); 1130 break; 1131 case 'l': 1132 write_lat_log = 1; 1133 break; 1134 case 'b': 1135 write_bw_log = 1; 1136 break; 1137 case 'o': 1138 f_out = fopen(optarg, "w+"); 1139 if (!f_out) { 1140 perror("fopen output"); 1141 exit(1); 1142 } 1143 f_err = f_out; 1144 break; 1145 case 'm': 1146 terse_output = 1; 1147 break; 1148 case 'h': 1149 usage(argv[0]); 1150 exit(0); 1151 case 'c': 1152 exit(fio_show_option_help(optarg)); 1153 case 's': 1154 dump_cmdline = 1; 1155 break; 1156 case 'r': 1157 read_only = 1; 1158 break; 1159 case 'v': 1160 log_info("%s\n", fio_version_string); 1161 exit(0); 1162 case 'e': 1163 if (!strcmp("always", optarg)) 1164 eta_print = FIO_ETA_ALWAYS; 1165 else if (!strcmp("never", optarg)) 1166 eta_print = FIO_ETA_NEVER; 1167 break; 1168 case 'd': 1169 if (set_debug(optarg)) 1170 do_exit++; 1171 break; 1172 case 'x': { 1173 size_t new_size; 1174 1175 if (!strcmp(optarg, "global")) { 1176 log_err("fio: can't use global as only " 1177 "section\n"); 1178 do_exit++; 1179 exit_val = 1; 1180 break; 1181 } 1182 new_size = (nr_job_sections + 1) * sizeof(char *); 1183 job_sections = realloc(job_sections, new_size); 1184 job_sections[nr_job_sections] = strdup(optarg); 1185 nr_job_sections++; 1186 break; 1187 } 1188 case 'p': 1189 exec_profile = strdup(optarg); 1190 break; 1191 case FIO_GETOPT_JOB: { 1192 const char *opt = l_opts[lidx].name; 1193 char *val = optarg; 1194 1195 if (!strncmp(opt, "name", 4) && td) { 1196 ret = add_job(td, td->o.name ?: "fio", 0); 1197 if (ret) { 1198 put_job(td); 1199 return 0; 1200 } 1201 td = NULL; 1202 } 1203 if (!td) { 1204 int is_section = !strncmp(opt, "name", 4); 1205 int global = 0; 1206 1207 if (!is_section || !strncmp(val, "global", 6)) 1208 global = 1; 1209 1210 if (is_section && skip_this_section(val)) 1211 continue; 1212 1213 td = get_new_job(global, &def_thread); 1214 if (!td) 1215 return 0; 1216 } 1217 1218 ret = fio_cmd_option_parse(td, opt, val); 1219 break; 1220 } 1221 case 'w': 1222 warnings_fatal = 1; 1223 break; 1224 default: 1225 do_exit++; 1226 exit_val = 1; 1227 break; 1228 } 1229 } 1230 1231 if (do_exit) 1232 exit(exit_val); 1233 1234 if (td) { 1235 if (!ret) 1236 ret = add_job(td, td->o.name ?: "fio", 0); 1237 if (ret) 1238 put_job(td); 1239 } 1240 1241 while (optind < argc) { 1242 ini_idx++; 1243 ini_file = realloc(ini_file, ini_idx * sizeof(char *)); 1244 ini_file[ini_idx - 1] = strdup(argv[optind]); 1245 optind++; 1246 } 1247 1248 return ini_idx; 1249} 1250 1251int parse_options(int argc, char *argv[]) 1252{ 1253 int job_files, i; 1254 1255 f_out = stdout; 1256 f_err = stderr; 1257 1258 fio_options_fill_optstring(); 1259 fio_options_dup_and_init(l_opts); 1260 1261 if (setup_thread_area()) 1262 return 1; 1263 if (fill_def_thread()) 1264 return 1; 1265 1266 job_files = parse_cmd_line(argc, argv); 1267 1268 for (i = 0; i < job_files; i++) { 1269 if (fill_def_thread()) 1270 return 1; 1271 if (parse_jobs_ini(ini_file[i], i)) 1272 return 1; 1273 free(ini_file[i]); 1274 } 1275 1276 free(ini_file); 1277 options_mem_free(&def_thread); 1278 1279 if (!thread_number) { 1280 if (dump_cmdline) 1281 return 0; 1282 if (exec_profile) 1283 return 0; 1284 1285 log_err("No jobs(s) defined\n\n"); 1286 usage(argv[0]); 1287 return 1; 1288 } 1289 1290 if (def_thread.o.gtod_offload) { 1291 fio_gtod_init(); 1292 fio_gtod_offload = 1; 1293 fio_gtod_cpu = def_thread.o.gtod_cpu; 1294 } 1295 1296 log_info("%s\n", fio_version_string); 1297 return 0; 1298} 1299