1 #include <unistd.h> 2 #include <fcntl.h> 3 #include <string.h> 4 #include <assert.h> 5 #include <dirent.h> 6 #include <libgen.h> 7 #include <sys/stat.h> 8 #include <sys/mman.h> 9 #include <sys/types.h> 10 11 #include "fio.h" 12 #include "smalloc.h" 13 #include "filehash.h" 14 #include "options.h" 15 #include "os/os.h" 16 #include "hash.h" 17 #include "lib/axmap.h" 18 19 #ifdef CONFIG_LINUX_FALLOCATE 20 #include <linux/falloc.h> 21 #endif 22 23 static int root_warn; 24 25 static FLIST_HEAD(filename_list); 26 27 static inline void clear_error(struct thread_data *td) 28 { 29 td->error = 0; 30 td->verror[0] = '\0'; 31 } 32 33 /* 34 * Leaves f->fd open on success, caller must close 35 */ 36 static int extend_file(struct thread_data *td, struct fio_file *f) 37 { 38 int r, new_layout = 0, unlink_file = 0, flags; 39 unsigned long long left; 40 unsigned int bs; 41 char *b = NULL; 42 43 if (read_only) { 44 log_err("fio: refusing extend of file due to read-only\n"); 45 return 0; 46 } 47 48 /* 49 * check if we need to lay the file out complete again. fio 50 * does that for operations involving reads, or for writes 51 * where overwrite is set 52 */ 53 if (td_read(td) || 54 (td_write(td) && td->o.overwrite && !td->o.file_append) || 55 (td_write(td) && td->io_ops->flags & FIO_NOEXTEND)) 56 new_layout = 1; 57 if (td_write(td) && !td->o.overwrite && !td->o.file_append) 58 unlink_file = 1; 59 60 if (unlink_file || new_layout) { 61 dprint(FD_FILE, "layout unlink %s\n", f->file_name); 62 if ((td_io_unlink_file(td, f) < 0) && (errno != ENOENT)) { 63 td_verror(td, errno, "unlink"); 64 return 1; 65 } 66 } 67 68 flags = O_WRONLY | O_CREAT; 69 if (new_layout) 70 flags |= O_TRUNC; 71 72 #ifdef WIN32 73 flags |= _O_BINARY; 74 #endif 75 76 dprint(FD_FILE, "open file %s, flags %x\n", f->file_name, flags); 77 f->fd = open(f->file_name, flags, 0644); 78 if (f->fd < 0) { 79 td_verror(td, errno, "open"); 80 return 1; 81 } 82 83 #ifdef CONFIG_POSIX_FALLOCATE 84 if (!td->o.fill_device) { 85 switch (td->o.fallocate_mode) { 86 case FIO_FALLOCATE_NONE: 87 break; 88 case FIO_FALLOCATE_POSIX: 89 dprint(FD_FILE, "posix_fallocate file %s size %llu\n", 90 f->file_name, 91 (unsigned long long) f->real_file_size); 92 93 r = posix_fallocate(f->fd, 0, f->real_file_size); 94 if (r > 0) { 95 log_err("fio: posix_fallocate fails: %s\n", 96 strerror(r)); 97 } 98 break; 99 #ifdef CONFIG_LINUX_FALLOCATE 100 case FIO_FALLOCATE_KEEP_SIZE: 101 dprint(FD_FILE, 102 "fallocate(FALLOC_FL_KEEP_SIZE) " 103 "file %s size %llu\n", f->file_name, 104 (unsigned long long) f->real_file_size); 105 106 r = fallocate(f->fd, FALLOC_FL_KEEP_SIZE, 0, 107 f->real_file_size); 108 if (r != 0) 109 td_verror(td, errno, "fallocate"); 110 111 break; 112 #endif /* CONFIG_LINUX_FALLOCATE */ 113 default: 114 log_err("fio: unknown fallocate mode: %d\n", 115 td->o.fallocate_mode); 116 assert(0); 117 } 118 } 119 #endif /* CONFIG_POSIX_FALLOCATE */ 120 121 if (!new_layout) 122 goto done; 123 124 /* 125 * The size will be -1ULL when fill_device is used, so don't truncate 126 * or fallocate this file, just write it 127 */ 128 if (!td->o.fill_device) { 129 dprint(FD_FILE, "truncate file %s, size %llu\n", f->file_name, 130 (unsigned long long) f->real_file_size); 131 if (ftruncate(f->fd, f->real_file_size) == -1) { 132 if (errno != EFBIG) { 133 td_verror(td, errno, "ftruncate"); 134 goto err; 135 } 136 } 137 } 138 139 b = malloc(td->o.max_bs[DDIR_WRITE]); 140 141 left = f->real_file_size; 142 while (left && !td->terminate) { 143 bs = td->o.max_bs[DDIR_WRITE]; 144 if (bs > left) 145 bs = left; 146 147 fill_io_buffer(td, b, bs, bs); 148 149 r = write(f->fd, b, bs); 150 151 if (r > 0) { 152 left -= r; 153 continue; 154 } else { 155 if (r < 0) { 156 int __e = errno; 157 158 if (__e == ENOSPC) { 159 if (td->o.fill_device) 160 break; 161 log_info("fio: ENOSPC on laying out " 162 "file, stopping\n"); 163 break; 164 } 165 td_verror(td, errno, "write"); 166 } else 167 td_verror(td, EIO, "write"); 168 169 break; 170 } 171 } 172 173 if (td->terminate) { 174 dprint(FD_FILE, "terminate unlink %s\n", f->file_name); 175 td_io_unlink_file(td, f); 176 } else if (td->o.create_fsync) { 177 if (fsync(f->fd) < 0) { 178 td_verror(td, errno, "fsync"); 179 goto err; 180 } 181 } 182 if (td->o.fill_device && !td_write(td)) { 183 fio_file_clear_size_known(f); 184 if (td_io_get_file_size(td, f)) 185 goto err; 186 if (f->io_size > f->real_file_size) 187 f->io_size = f->real_file_size; 188 } 189 190 free(b); 191 done: 192 return 0; 193 err: 194 close(f->fd); 195 f->fd = -1; 196 if (b) 197 free(b); 198 return 1; 199 } 200 201 static int pre_read_file(struct thread_data *td, struct fio_file *f) 202 { 203 int ret = 0, r, did_open = 0, old_runstate; 204 unsigned long long left; 205 unsigned int bs; 206 char *b; 207 208 if (td->io_ops->flags & FIO_PIPEIO) 209 return 0; 210 211 if (!fio_file_open(f)) { 212 if (td->io_ops->open_file(td, f)) { 213 log_err("fio: cannot pre-read, failed to open file\n"); 214 return 1; 215 } 216 did_open = 1; 217 } 218 219 old_runstate = td_bump_runstate(td, TD_PRE_READING); 220 221 bs = td->o.max_bs[DDIR_READ]; 222 b = malloc(bs); 223 memset(b, 0, bs); 224 225 if (lseek(f->fd, f->file_offset, SEEK_SET) < 0) { 226 td_verror(td, errno, "lseek"); 227 log_err("fio: failed to lseek pre-read file\n"); 228 ret = 1; 229 goto error; 230 } 231 232 left = f->io_size; 233 234 while (left && !td->terminate) { 235 if (bs > left) 236 bs = left; 237 238 r = read(f->fd, b, bs); 239 240 if (r == (int) bs) { 241 left -= bs; 242 continue; 243 } else { 244 td_verror(td, EIO, "pre_read"); 245 break; 246 } 247 } 248 249 error: 250 td_restore_runstate(td, old_runstate); 251 252 if (did_open) 253 td->io_ops->close_file(td, f); 254 255 free(b); 256 return ret; 257 } 258 259 static unsigned long long get_rand_file_size(struct thread_data *td) 260 { 261 unsigned long long ret, sized; 262 unsigned long r; 263 264 r = __rand(&td->file_size_state); 265 sized = td->o.file_size_high - td->o.file_size_low; 266 ret = (unsigned long long) ((double) sized * (r / (FRAND_MAX + 1.0))); 267 ret += td->o.file_size_low; 268 ret -= (ret % td->o.rw_min_bs); 269 return ret; 270 } 271 272 static int file_size(struct thread_data *td, struct fio_file *f) 273 { 274 struct stat st; 275 276 if (stat(f->file_name, &st) == -1) { 277 td_verror(td, errno, "fstat"); 278 return 1; 279 } 280 281 f->real_file_size = st.st_size; 282 return 0; 283 } 284 285 static int bdev_size(struct thread_data *td, struct fio_file *f) 286 { 287 unsigned long long bytes = 0; 288 int r; 289 290 if (td->io_ops->open_file(td, f)) { 291 log_err("fio: failed opening blockdev %s for size check\n", 292 f->file_name); 293 return 1; 294 } 295 296 r = blockdev_size(f, &bytes); 297 if (r) { 298 td_verror(td, r, "blockdev_size"); 299 goto err; 300 } 301 302 if (!bytes) { 303 log_err("%s: zero sized block device?\n", f->file_name); 304 goto err; 305 } 306 307 f->real_file_size = bytes; 308 td->io_ops->close_file(td, f); 309 return 0; 310 err: 311 td->io_ops->close_file(td, f); 312 return 1; 313 } 314 315 static int char_size(struct thread_data *td, struct fio_file *f) 316 { 317 #ifdef FIO_HAVE_CHARDEV_SIZE 318 unsigned long long bytes = 0; 319 int r; 320 321 if (td->io_ops->open_file(td, f)) { 322 log_err("fio: failed opening blockdev %s for size check\n", 323 f->file_name); 324 return 1; 325 } 326 327 r = chardev_size(f, &bytes); 328 if (r) { 329 td_verror(td, r, "chardev_size"); 330 goto err; 331 } 332 333 if (!bytes) { 334 log_err("%s: zero sized char device?\n", f->file_name); 335 goto err; 336 } 337 338 f->real_file_size = bytes; 339 td->io_ops->close_file(td, f); 340 return 0; 341 err: 342 td->io_ops->close_file(td, f); 343 return 1; 344 #else 345 f->real_file_size = -1ULL; 346 return 0; 347 #endif 348 } 349 350 static int get_file_size(struct thread_data *td, struct fio_file *f) 351 { 352 int ret = 0; 353 354 if (fio_file_size_known(f)) 355 return 0; 356 357 if (f->filetype == FIO_TYPE_FILE) 358 ret = file_size(td, f); 359 else if (f->filetype == FIO_TYPE_BD) 360 ret = bdev_size(td, f); 361 else if (f->filetype == FIO_TYPE_CHAR) 362 ret = char_size(td, f); 363 else 364 f->real_file_size = -1; 365 366 if (ret) 367 return ret; 368 369 if (f->file_offset > f->real_file_size) { 370 log_err("%s: offset extends end (%llu > %llu)\n", td->o.name, 371 (unsigned long long) f->file_offset, 372 (unsigned long long) f->real_file_size); 373 return 1; 374 } 375 376 fio_file_set_size_known(f); 377 return 0; 378 } 379 380 static int __file_invalidate_cache(struct thread_data *td, struct fio_file *f, 381 unsigned long long off, 382 unsigned long long len) 383 { 384 int ret = 0; 385 386 #ifdef CONFIG_ESX 387 return 0; 388 #endif 389 390 if (len == -1ULL) 391 len = f->io_size; 392 if (off == -1ULL) 393 off = f->file_offset; 394 395 if (len == -1ULL || off == -1ULL) 396 return 0; 397 398 dprint(FD_IO, "invalidate cache %s: %llu/%llu\n", f->file_name, off, 399 len); 400 401 if (td->io_ops->invalidate) 402 ret = td->io_ops->invalidate(td, f); 403 else if (f->filetype == FIO_TYPE_FILE) 404 ret = posix_fadvise(f->fd, off, len, POSIX_FADV_DONTNEED); 405 else if (f->filetype == FIO_TYPE_BD) { 406 ret = blockdev_invalidate_cache(f); 407 if (ret < 0 && errno == EACCES && geteuid()) { 408 if (!root_warn) { 409 log_err("fio: only root may flush block " 410 "devices. Cache flush bypassed!\n"); 411 root_warn = 1; 412 } 413 ret = 0; 414 } 415 } else if (f->filetype == FIO_TYPE_CHAR || f->filetype == FIO_TYPE_PIPE) 416 ret = 0; 417 418 /* 419 * Cache flushing isn't a fatal condition, and we know it will 420 * happen on some platforms where we don't have the proper 421 * function to flush eg block device caches. So just warn and 422 * continue on our way. 423 */ 424 if (ret) { 425 log_info("fio: cache invalidation of %s failed: %s\n", f->file_name, strerror(errno)); 426 ret = 0; 427 } 428 429 return 0; 430 431 } 432 433 int file_invalidate_cache(struct thread_data *td, struct fio_file *f) 434 { 435 if (!fio_file_open(f)) 436 return 0; 437 438 return __file_invalidate_cache(td, f, -1ULL, -1ULL); 439 } 440 441 int generic_close_file(struct thread_data fio_unused *td, struct fio_file *f) 442 { 443 int ret = 0; 444 445 dprint(FD_FILE, "fd close %s\n", f->file_name); 446 447 remove_file_hash(f); 448 449 if (close(f->fd) < 0) 450 ret = errno; 451 452 f->fd = -1; 453 454 if (f->shadow_fd != -1) { 455 close(f->shadow_fd); 456 f->shadow_fd = -1; 457 } 458 459 f->engine_data = 0; 460 return ret; 461 } 462 463 int file_lookup_open(struct fio_file *f, int flags) 464 { 465 struct fio_file *__f; 466 int from_hash; 467 468 __f = lookup_file_hash(f->file_name); 469 if (__f) { 470 dprint(FD_FILE, "found file in hash %s\n", f->file_name); 471 /* 472 * racy, need the __f->lock locked 473 */ 474 f->lock = __f->lock; 475 from_hash = 1; 476 } else { 477 dprint(FD_FILE, "file not found in hash %s\n", f->file_name); 478 from_hash = 0; 479 } 480 481 #ifdef WIN32 482 flags |= _O_BINARY; 483 #endif 484 485 f->fd = open(f->file_name, flags, 0600); 486 return from_hash; 487 } 488 489 static int file_close_shadow_fds(struct thread_data *td) 490 { 491 struct fio_file *f; 492 int num_closed = 0; 493 unsigned int i; 494 495 for_each_file(td, f, i) { 496 if (f->shadow_fd == -1) 497 continue; 498 499 close(f->shadow_fd); 500 f->shadow_fd = -1; 501 num_closed++; 502 } 503 504 return num_closed; 505 } 506 507 int generic_open_file(struct thread_data *td, struct fio_file *f) 508 { 509 int is_std = 0; 510 int flags = 0; 511 int from_hash = 0; 512 513 dprint(FD_FILE, "fd open %s\n", f->file_name); 514 515 if (td_trim(td) && f->filetype != FIO_TYPE_BD) { 516 log_err("fio: trim only applies to block device\n"); 517 return 1; 518 } 519 520 if (!strcmp(f->file_name, "-")) { 521 if (td_rw(td)) { 522 log_err("fio: can't read/write to stdin/out\n"); 523 return 1; 524 } 525 is_std = 1; 526 527 /* 528 * move output logging to stderr, if we are writing to stdout 529 */ 530 if (td_write(td)) 531 f_out = stderr; 532 } 533 534 if (td_trim(td)) 535 goto skip_flags; 536 if (td->o.odirect) 537 flags |= OS_O_DIRECT; 538 if (td->o.oatomic) { 539 if (!FIO_O_ATOMIC) { 540 td_verror(td, EINVAL, "OS does not support atomic IO"); 541 return 1; 542 } 543 flags |= OS_O_DIRECT | FIO_O_ATOMIC; 544 } 545 if (td->o.sync_io) 546 flags |= O_SYNC; 547 if (td->o.create_on_open) 548 flags |= O_CREAT; 549 skip_flags: 550 if (f->filetype != FIO_TYPE_FILE) 551 flags |= FIO_O_NOATIME; 552 553 open_again: 554 if (td_write(td)) { 555 if (!read_only) 556 flags |= O_RDWR; 557 558 if (f->filetype == FIO_TYPE_FILE) 559 flags |= O_CREAT; 560 561 if (is_std) 562 f->fd = dup(STDOUT_FILENO); 563 else 564 from_hash = file_lookup_open(f, flags); 565 } else if (td_read(td)) { 566 if (f->filetype == FIO_TYPE_CHAR && !read_only) 567 flags |= O_RDWR; 568 else 569 flags |= O_RDONLY; 570 571 if (is_std) 572 f->fd = dup(STDIN_FILENO); 573 else 574 from_hash = file_lookup_open(f, flags); 575 } else { //td trim 576 flags |= O_RDWR; 577 from_hash = file_lookup_open(f, flags); 578 } 579 580 if (f->fd == -1) { 581 char buf[FIO_VERROR_SIZE]; 582 int __e = errno; 583 584 if (__e == EPERM && (flags & FIO_O_NOATIME)) { 585 flags &= ~FIO_O_NOATIME; 586 goto open_again; 587 } 588 if (__e == EMFILE && file_close_shadow_fds(td)) 589 goto open_again; 590 591 snprintf(buf, sizeof(buf), "open(%s)", f->file_name); 592 593 if (__e == EINVAL && (flags & OS_O_DIRECT)) { 594 log_err("fio: looks like your file system does not " \ 595 "support direct=1/buffered=0\n"); 596 } 597 598 td_verror(td, __e, buf); 599 return 1; 600 } 601 602 if (!from_hash && f->fd != -1) { 603 if (add_file_hash(f)) { 604 int fio_unused ret; 605 606 /* 607 * Stash away descriptor for later close. This is to 608 * work-around a "feature" on Linux, where a close of 609 * an fd that has been opened for write will trigger 610 * udev to call blkid to check partitions, fs id, etc. 611 * That pollutes the device cache, which can slow down 612 * unbuffered accesses. 613 */ 614 if (f->shadow_fd == -1) 615 f->shadow_fd = f->fd; 616 else { 617 /* 618 * OK to ignore, we haven't done anything 619 * with it 620 */ 621 ret = generic_close_file(td, f); 622 } 623 goto open_again; 624 } 625 } 626 627 return 0; 628 } 629 630 int generic_get_file_size(struct thread_data *td, struct fio_file *f) 631 { 632 return get_file_size(td, f); 633 } 634 635 /* 636 * open/close all files, so that ->real_file_size gets set 637 */ 638 static int get_file_sizes(struct thread_data *td) 639 { 640 struct fio_file *f; 641 unsigned int i; 642 int err = 0; 643 644 for_each_file(td, f, i) { 645 dprint(FD_FILE, "get file size for %p/%d/%p\n", f, i, 646 f->file_name); 647 648 if (td_io_get_file_size(td, f)) { 649 if (td->error != ENOENT) { 650 log_err("%s\n", td->verror); 651 err = 1; 652 break; 653 } 654 clear_error(td); 655 } 656 657 if (f->real_file_size == -1ULL && td->o.size) 658 f->real_file_size = td->o.size / td->o.nr_files; 659 } 660 661 return err; 662 } 663 664 struct fio_mount { 665 struct flist_head list; 666 const char *base; 667 char __base[256]; 668 unsigned int key; 669 }; 670 671 /* 672 * Get free number of bytes for each file on each unique mount. 673 */ 674 static unsigned long long get_fs_free_counts(struct thread_data *td) 675 { 676 struct flist_head *n, *tmp; 677 unsigned long long ret = 0; 678 struct fio_mount *fm; 679 FLIST_HEAD(list); 680 struct fio_file *f; 681 unsigned int i; 682 683 for_each_file(td, f, i) { 684 struct stat sb; 685 char buf[256]; 686 687 if (f->filetype == FIO_TYPE_BD || f->filetype == FIO_TYPE_CHAR) { 688 if (f->real_file_size != -1ULL) 689 ret += f->real_file_size; 690 continue; 691 } else if (f->filetype != FIO_TYPE_FILE) 692 continue; 693 694 buf[255] = '\0'; 695 strncpy(buf, f->file_name, 255); 696 697 if (stat(buf, &sb) < 0) { 698 if (errno != ENOENT) 699 break; 700 strcpy(buf, "."); 701 if (stat(buf, &sb) < 0) 702 break; 703 } 704 705 fm = NULL; 706 flist_for_each(n, &list) { 707 fm = flist_entry(n, struct fio_mount, list); 708 if (fm->key == sb.st_dev) 709 break; 710 711 fm = NULL; 712 } 713 714 if (fm) 715 continue; 716 717 fm = calloc(1, sizeof(*fm)); 718 strncpy(fm->__base, buf, sizeof(fm->__base) - 1); 719 fm->base = basename(fm->__base); 720 fm->key = sb.st_dev; 721 flist_add(&fm->list, &list); 722 } 723 724 flist_for_each_safe(n, tmp, &list) { 725 unsigned long long sz; 726 727 fm = flist_entry(n, struct fio_mount, list); 728 flist_del(&fm->list); 729 730 sz = get_fs_size(fm->base); 731 if (sz && sz != -1ULL) 732 ret += sz; 733 734 free(fm); 735 } 736 737 return ret; 738 } 739 740 uint64_t get_start_offset(struct thread_data *td, struct fio_file *f) 741 { 742 struct thread_options *o = &td->o; 743 744 if (o->file_append && f->filetype == FIO_TYPE_FILE) 745 return f->real_file_size; 746 747 return td->o.start_offset + 748 td->subjob_number * td->o.offset_increment; 749 } 750 751 /* 752 * Open the files and setup files sizes, creating files if necessary. 753 */ 754 int setup_files(struct thread_data *td) 755 { 756 unsigned long long total_size, extend_size; 757 struct thread_options *o = &td->o; 758 struct fio_file *f; 759 unsigned int i, nr_fs_extra = 0; 760 int err = 0, need_extend; 761 int old_state; 762 const unsigned int bs = td_min_bs(td); 763 uint64_t fs = 0; 764 765 dprint(FD_FILE, "setup files\n"); 766 767 old_state = td_bump_runstate(td, TD_SETTING_UP); 768 769 if (o->read_iolog_file) 770 goto done; 771 772 /* 773 * if ioengine defines a setup() method, it's responsible for 774 * opening the files and setting f->real_file_size to indicate 775 * the valid range for that file. 776 */ 777 if (td->io_ops->setup) 778 err = td->io_ops->setup(td); 779 else 780 err = get_file_sizes(td); 781 782 if (err) 783 goto err_out; 784 785 /* 786 * check sizes. if the files/devices do not exist and the size 787 * isn't passed to fio, abort. 788 */ 789 total_size = 0; 790 for_each_file(td, f, i) { 791 if (f->real_file_size == -1ULL) 792 total_size = -1ULL; 793 else 794 total_size += f->real_file_size; 795 } 796 797 if (o->fill_device) 798 td->fill_device_size = get_fs_free_counts(td); 799 800 /* 801 * device/file sizes are zero and no size given, punt 802 */ 803 if ((!total_size || total_size == -1ULL) && !o->size && 804 !(td->io_ops->flags & FIO_NOIO) && !o->fill_device && 805 !(o->nr_files && (o->file_size_low || o->file_size_high))) { 806 log_err("%s: you need to specify size=\n", o->name); 807 td_verror(td, EINVAL, "total_file_size"); 808 goto err_out; 809 } 810 811 /* 812 * Calculate per-file size and potential extra size for the 813 * first files, if needed. 814 */ 815 if (!o->file_size_low && o->nr_files) { 816 uint64_t all_fs; 817 818 fs = o->size / o->nr_files; 819 all_fs = fs * o->nr_files; 820 821 if (all_fs < o->size) 822 nr_fs_extra = (o->size - all_fs) / bs; 823 } 824 825 /* 826 * now file sizes are known, so we can set ->io_size. if size= is 827 * not given, ->io_size is just equal to ->real_file_size. if size 828 * is given, ->io_size is size / nr_files. 829 */ 830 extend_size = total_size = 0; 831 need_extend = 0; 832 for_each_file(td, f, i) { 833 f->file_offset = get_start_offset(td, f); 834 835 if (!o->file_size_low) { 836 /* 837 * no file size range given, file size is equal to 838 * total size divided by number of files. If that is 839 * zero, set it to the real file size. If the size 840 * doesn't divide nicely with the min blocksize, 841 * make the first files bigger. 842 */ 843 f->io_size = fs; 844 if (nr_fs_extra) { 845 nr_fs_extra--; 846 f->io_size += bs; 847 } 848 849 if (!f->io_size) 850 f->io_size = f->real_file_size - f->file_offset; 851 } else if (f->real_file_size < o->file_size_low || 852 f->real_file_size > o->file_size_high) { 853 if (f->file_offset > o->file_size_low) 854 goto err_offset; 855 /* 856 * file size given. if it's fixed, use that. if it's a 857 * range, generate a random size in-between. 858 */ 859 if (o->file_size_low == o->file_size_high) 860 f->io_size = o->file_size_low - f->file_offset; 861 else { 862 f->io_size = get_rand_file_size(td) 863 - f->file_offset; 864 } 865 } else 866 f->io_size = f->real_file_size - f->file_offset; 867 868 if (f->io_size == -1ULL) 869 total_size = -1ULL; 870 else { 871 if (o->size_percent) 872 f->io_size = (f->io_size * o->size_percent) / 100; 873 total_size += f->io_size; 874 } 875 876 if (f->filetype == FIO_TYPE_FILE && 877 (f->io_size + f->file_offset) > f->real_file_size && 878 !(td->io_ops->flags & FIO_DISKLESSIO)) { 879 if (!o->create_on_open) { 880 need_extend++; 881 extend_size += (f->io_size + f->file_offset); 882 } else 883 f->real_file_size = f->io_size + f->file_offset; 884 fio_file_set_extend(f); 885 } 886 } 887 888 if (!o->size || (total_size && o->size > total_size)) 889 o->size = total_size; 890 891 if (o->size < td_min_bs(td)) { 892 log_err("fio: blocksize too large for data set\n"); 893 goto err_out; 894 } 895 896 /* 897 * See if we need to extend some files 898 */ 899 if (need_extend) { 900 temp_stall_ts = 1; 901 if (output_format == FIO_OUTPUT_NORMAL) 902 log_info("%s: Laying out IO file(s) (%u file(s) /" 903 " %lluMB)\n", o->name, need_extend, 904 extend_size >> 20); 905 906 for_each_file(td, f, i) { 907 unsigned long long old_len = -1ULL, extend_len = -1ULL; 908 909 if (!fio_file_extend(f)) 910 continue; 911 912 assert(f->filetype == FIO_TYPE_FILE); 913 fio_file_clear_extend(f); 914 if (!o->fill_device) { 915 old_len = f->real_file_size; 916 extend_len = f->io_size + f->file_offset - 917 old_len; 918 } 919 f->real_file_size = (f->io_size + f->file_offset); 920 err = extend_file(td, f); 921 if (err) 922 break; 923 924 err = __file_invalidate_cache(td, f, old_len, 925 extend_len); 926 927 /* 928 * Shut up static checker 929 */ 930 if (f->fd != -1) 931 close(f->fd); 932 933 f->fd = -1; 934 if (err) 935 break; 936 } 937 temp_stall_ts = 0; 938 } 939 940 if (err) 941 goto err_out; 942 943 if (!o->zone_size) 944 o->zone_size = o->size; 945 946 /* 947 * iolog already set the total io size, if we read back 948 * stored entries. 949 */ 950 if (!o->read_iolog_file) { 951 if (o->io_limit) 952 td->total_io_size = o->io_limit * o->loops; 953 else 954 td->total_io_size = o->size * o->loops; 955 } 956 957 done: 958 if (o->create_only) 959 td->done = 1; 960 961 td_restore_runstate(td, old_state); 962 return 0; 963 err_offset: 964 log_err("%s: you need to specify valid offset=\n", o->name); 965 err_out: 966 td_restore_runstate(td, old_state); 967 return 1; 968 } 969 970 int pre_read_files(struct thread_data *td) 971 { 972 struct fio_file *f; 973 unsigned int i; 974 975 dprint(FD_FILE, "pre_read files\n"); 976 977 for_each_file(td, f, i) { 978 pre_read_file(td, f); 979 } 980 981 return 1; 982 } 983 984 static int __init_rand_distribution(struct thread_data *td, struct fio_file *f) 985 { 986 unsigned int range_size, seed; 987 unsigned long nranges; 988 uint64_t fsize; 989 990 range_size = min(td->o.min_bs[DDIR_READ], td->o.min_bs[DDIR_WRITE]); 991 fsize = min(f->real_file_size, f->io_size); 992 993 nranges = (fsize + range_size - 1) / range_size; 994 995 seed = jhash(f->file_name, strlen(f->file_name), 0) * td->thread_number; 996 if (!td->o.rand_repeatable) 997 seed = td->rand_seeds[4]; 998 999 if (td->o.random_distribution == FIO_RAND_DIST_ZIPF) 1000 zipf_init(&f->zipf, nranges, td->o.zipf_theta.u.f, seed); 1001 else 1002 pareto_init(&f->zipf, nranges, td->o.pareto_h.u.f, seed); 1003 1004 return 1; 1005 } 1006 1007 static int init_rand_distribution(struct thread_data *td) 1008 { 1009 struct fio_file *f; 1010 unsigned int i; 1011 int state; 1012 1013 if (td->o.random_distribution == FIO_RAND_DIST_RANDOM) 1014 return 0; 1015 1016 state = td_bump_runstate(td, TD_SETTING_UP); 1017 1018 for_each_file(td, f, i) 1019 __init_rand_distribution(td, f); 1020 1021 td_restore_runstate(td, state); 1022 1023 return 1; 1024 } 1025 1026 int init_random_map(struct thread_data *td) 1027 { 1028 unsigned long long blocks; 1029 struct fio_file *f; 1030 unsigned int i; 1031 1032 if (init_rand_distribution(td)) 1033 return 0; 1034 if (!td_random(td)) 1035 return 0; 1036 1037 for_each_file(td, f, i) { 1038 uint64_t fsize = min(f->real_file_size, f->io_size); 1039 1040 blocks = fsize / (unsigned long long) td->o.rw_min_bs; 1041 1042 if (td->o.random_generator == FIO_RAND_GEN_LFSR) { 1043 unsigned long seed; 1044 1045 seed = td->rand_seeds[FIO_RAND_BLOCK_OFF]; 1046 1047 if (!lfsr_init(&f->lfsr, blocks, seed, 0)) { 1048 fio_file_set_lfsr(f); 1049 continue; 1050 } 1051 } else if (!td->o.norandommap) { 1052 f->io_axmap = axmap_new(blocks); 1053 if (f->io_axmap) { 1054 fio_file_set_axmap(f); 1055 continue; 1056 } 1057 } else if (td->o.norandommap) 1058 continue; 1059 1060 if (!td->o.softrandommap) { 1061 log_err("fio: failed allocating random map. If running" 1062 " a large number of jobs, try the 'norandommap'" 1063 " option or set 'softrandommap'. Or give" 1064 " a larger --alloc-size to fio.\n"); 1065 return 1; 1066 } 1067 1068 log_info("fio: file %s failed allocating random map. Running " 1069 "job without.\n", f->file_name); 1070 } 1071 1072 return 0; 1073 } 1074 1075 void close_files(struct thread_data *td) 1076 { 1077 struct fio_file *f; 1078 unsigned int i; 1079 1080 for_each_file(td, f, i) { 1081 if (fio_file_open(f)) 1082 td_io_close_file(td, f); 1083 } 1084 } 1085 1086 void close_and_free_files(struct thread_data *td) 1087 { 1088 struct fio_file *f; 1089 unsigned int i; 1090 1091 dprint(FD_FILE, "close files\n"); 1092 1093 for_each_file(td, f, i) { 1094 if (td->o.unlink && f->filetype == FIO_TYPE_FILE) { 1095 dprint(FD_FILE, "free unlink %s\n", f->file_name); 1096 td_io_unlink_file(td, f); 1097 } 1098 1099 if (fio_file_open(f)) 1100 td_io_close_file(td, f); 1101 1102 remove_file_hash(f); 1103 1104 if (td->o.unlink && f->filetype == FIO_TYPE_FILE) { 1105 dprint(FD_FILE, "free unlink %s\n", f->file_name); 1106 td_io_unlink_file(td, f); 1107 } 1108 1109 sfree(f->file_name); 1110 f->file_name = NULL; 1111 if (fio_file_axmap(f)) { 1112 axmap_free(f->io_axmap); 1113 f->io_axmap = NULL; 1114 } 1115 sfree(f); 1116 } 1117 1118 td->o.filename = NULL; 1119 free(td->files); 1120 free(td->file_locks); 1121 td->files_index = 0; 1122 td->files = NULL; 1123 td->file_locks = NULL; 1124 td->o.file_lock_mode = FILE_LOCK_NONE; 1125 td->o.nr_files = 0; 1126 } 1127 1128 static void get_file_type(struct fio_file *f) 1129 { 1130 struct stat sb; 1131 1132 if (!strcmp(f->file_name, "-")) 1133 f->filetype = FIO_TYPE_PIPE; 1134 else 1135 f->filetype = FIO_TYPE_FILE; 1136 1137 /* \\.\ is the device namespace in Windows, where every file is 1138 * a block device */ 1139 if (strncmp(f->file_name, "\\\\.\\", 4) == 0) 1140 f->filetype = FIO_TYPE_BD; 1141 1142 if (!stat(f->file_name, &sb)) { 1143 if (S_ISBLK(sb.st_mode)) 1144 f->filetype = FIO_TYPE_BD; 1145 else if (S_ISCHR(sb.st_mode)) 1146 f->filetype = FIO_TYPE_CHAR; 1147 else if (S_ISFIFO(sb.st_mode)) 1148 f->filetype = FIO_TYPE_PIPE; 1149 } 1150 } 1151 1152 static int __is_already_allocated(const char *fname) 1153 { 1154 struct flist_head *entry; 1155 char *filename; 1156 1157 if (flist_empty(&filename_list)) 1158 return 0; 1159 1160 flist_for_each(entry, &filename_list) { 1161 filename = flist_entry(entry, struct file_name, list)->filename; 1162 1163 if (strcmp(filename, fname) == 0) 1164 return 1; 1165 } 1166 1167 return 0; 1168 } 1169 1170 static int is_already_allocated(const char *fname) 1171 { 1172 int ret; 1173 1174 fio_file_hash_lock(); 1175 ret = __is_already_allocated(fname); 1176 fio_file_hash_unlock(); 1177 return ret; 1178 } 1179 1180 static void set_already_allocated(const char *fname) 1181 { 1182 struct file_name *fn; 1183 1184 fn = malloc(sizeof(struct file_name)); 1185 fn->filename = strdup(fname); 1186 1187 fio_file_hash_lock(); 1188 if (!__is_already_allocated(fname)) { 1189 flist_add_tail(&fn->list, &filename_list); 1190 fn = NULL; 1191 } 1192 fio_file_hash_unlock(); 1193 1194 if (fn) { 1195 free(fn->filename); 1196 free(fn); 1197 } 1198 } 1199 1200 1201 static void free_already_allocated(void) 1202 { 1203 struct flist_head *entry, *tmp; 1204 struct file_name *fn; 1205 1206 if (flist_empty(&filename_list)) 1207 return; 1208 1209 fio_file_hash_lock(); 1210 flist_for_each_safe(entry, tmp, &filename_list) { 1211 fn = flist_entry(entry, struct file_name, list); 1212 free(fn->filename); 1213 flist_del(&fn->list); 1214 free(fn); 1215 } 1216 1217 fio_file_hash_unlock(); 1218 } 1219 1220 static struct fio_file *alloc_new_file(struct thread_data *td) 1221 { 1222 struct fio_file *f; 1223 1224 f = smalloc(sizeof(*f)); 1225 if (!f) { 1226 log_err("fio: smalloc OOM\n"); 1227 assert(0); 1228 return NULL; 1229 } 1230 1231 f->fd = -1; 1232 f->shadow_fd = -1; 1233 fio_file_reset(td, f); 1234 return f; 1235 } 1236 1237 int add_file(struct thread_data *td, const char *fname, int numjob, int inc) 1238 { 1239 int cur_files = td->files_index; 1240 char file_name[PATH_MAX]; 1241 struct fio_file *f; 1242 int len = 0; 1243 1244 dprint(FD_FILE, "add file %s\n", fname); 1245 1246 if (td->o.directory) 1247 len = set_name_idx(file_name, td->o.directory, numjob); 1248 1249 sprintf(file_name + len, "%s", fname); 1250 1251 /* clean cloned siblings using existing files */ 1252 if (numjob && is_already_allocated(file_name)) 1253 return 0; 1254 1255 f = alloc_new_file(td); 1256 1257 if (td->files_size <= td->files_index) { 1258 unsigned int new_size = td->o.nr_files + 1; 1259 1260 dprint(FD_FILE, "resize file array to %d files\n", new_size); 1261 1262 td->files = realloc(td->files, new_size * sizeof(f)); 1263 if (td->files == NULL) { 1264 log_err("fio: realloc OOM\n"); 1265 assert(0); 1266 } 1267 if (td->o.file_lock_mode != FILE_LOCK_NONE) { 1268 td->file_locks = realloc(td->file_locks, new_size); 1269 if (!td->file_locks) { 1270 log_err("fio: realloc OOM\n"); 1271 assert(0); 1272 } 1273 td->file_locks[cur_files] = FILE_LOCK_NONE; 1274 } 1275 td->files_size = new_size; 1276 } 1277 td->files[cur_files] = f; 1278 f->fileno = cur_files; 1279 1280 /* 1281 * init function, io engine may not be loaded yet 1282 */ 1283 if (td->io_ops && (td->io_ops->flags & FIO_DISKLESSIO)) 1284 f->real_file_size = -1ULL; 1285 1286 f->file_name = smalloc_strdup(file_name); 1287 if (!f->file_name) { 1288 log_err("fio: smalloc OOM\n"); 1289 assert(0); 1290 } 1291 1292 get_file_type(f); 1293 1294 switch (td->o.file_lock_mode) { 1295 case FILE_LOCK_NONE: 1296 break; 1297 case FILE_LOCK_READWRITE: 1298 f->rwlock = fio_rwlock_init(); 1299 break; 1300 case FILE_LOCK_EXCLUSIVE: 1301 f->lock = fio_mutex_init(FIO_MUTEX_UNLOCKED); 1302 break; 1303 default: 1304 log_err("fio: unknown lock mode: %d\n", td->o.file_lock_mode); 1305 assert(0); 1306 } 1307 1308 td->files_index++; 1309 if (f->filetype == FIO_TYPE_FILE) 1310 td->nr_normal_files++; 1311 1312 set_already_allocated(file_name); 1313 1314 if (inc) 1315 td->o.nr_files++; 1316 1317 dprint(FD_FILE, "file %p \"%s\" added at %d\n", f, f->file_name, 1318 cur_files); 1319 1320 return cur_files; 1321 } 1322 1323 int add_file_exclusive(struct thread_data *td, const char *fname) 1324 { 1325 struct fio_file *f; 1326 unsigned int i; 1327 1328 for_each_file(td, f, i) { 1329 if (!strcmp(f->file_name, fname)) 1330 return i; 1331 } 1332 1333 return add_file(td, fname, 0, 1); 1334 } 1335 1336 void get_file(struct fio_file *f) 1337 { 1338 dprint(FD_FILE, "get file %s, ref=%d\n", f->file_name, f->references); 1339 assert(fio_file_open(f)); 1340 f->references++; 1341 } 1342 1343 int put_file(struct thread_data *td, struct fio_file *f) 1344 { 1345 int f_ret = 0, ret = 0; 1346 1347 dprint(FD_FILE, "put file %s, ref=%d\n", f->file_name, f->references); 1348 1349 if (!fio_file_open(f)) { 1350 assert(f->fd == -1); 1351 return 0; 1352 } 1353 1354 assert(f->references); 1355 if (--f->references) 1356 return 0; 1357 1358 if (should_fsync(td) && td->o.fsync_on_close) { 1359 f_ret = fsync(f->fd); 1360 if (f_ret < 0) 1361 f_ret = errno; 1362 } 1363 1364 if (td->io_ops->close_file) 1365 ret = td->io_ops->close_file(td, f); 1366 1367 if (!ret) 1368 ret = f_ret; 1369 1370 td->nr_open_files--; 1371 fio_file_clear_open(f); 1372 assert(f->fd == -1); 1373 return ret; 1374 } 1375 1376 void lock_file(struct thread_data *td, struct fio_file *f, enum fio_ddir ddir) 1377 { 1378 if (!f->lock || td->o.file_lock_mode == FILE_LOCK_NONE) 1379 return; 1380 1381 if (td->o.file_lock_mode == FILE_LOCK_READWRITE) { 1382 if (ddir == DDIR_READ) 1383 fio_rwlock_read(f->rwlock); 1384 else 1385 fio_rwlock_write(f->rwlock); 1386 } else if (td->o.file_lock_mode == FILE_LOCK_EXCLUSIVE) 1387 fio_mutex_down(f->lock); 1388 1389 td->file_locks[f->fileno] = td->o.file_lock_mode; 1390 } 1391 1392 void unlock_file(struct thread_data *td, struct fio_file *f) 1393 { 1394 if (!f->lock || td->o.file_lock_mode == FILE_LOCK_NONE) 1395 return; 1396 1397 if (td->o.file_lock_mode == FILE_LOCK_READWRITE) 1398 fio_rwlock_unlock(f->rwlock); 1399 else if (td->o.file_lock_mode == FILE_LOCK_EXCLUSIVE) 1400 fio_mutex_up(f->lock); 1401 1402 td->file_locks[f->fileno] = FILE_LOCK_NONE; 1403 } 1404 1405 void unlock_file_all(struct thread_data *td, struct fio_file *f) 1406 { 1407 if (td->o.file_lock_mode == FILE_LOCK_NONE || !td->file_locks) 1408 return; 1409 if (td->file_locks[f->fileno] != FILE_LOCK_NONE) 1410 unlock_file(td, f); 1411 } 1412 1413 static int recurse_dir(struct thread_data *td, const char *dirname) 1414 { 1415 struct dirent *dir; 1416 int ret = 0; 1417 DIR *D; 1418 1419 D = opendir(dirname); 1420 if (!D) { 1421 char buf[FIO_VERROR_SIZE]; 1422 1423 snprintf(buf, FIO_VERROR_SIZE, "opendir(%s)", dirname); 1424 td_verror(td, errno, buf); 1425 return 1; 1426 } 1427 1428 while ((dir = readdir(D)) != NULL) { 1429 char full_path[PATH_MAX]; 1430 struct stat sb; 1431 1432 if (!strcmp(dir->d_name, ".") || !strcmp(dir->d_name, "..")) 1433 continue; 1434 1435 sprintf(full_path, "%s%s%s", dirname, FIO_OS_PATH_SEPARATOR, dir->d_name); 1436 1437 if (lstat(full_path, &sb) == -1) { 1438 if (errno != ENOENT) { 1439 td_verror(td, errno, "stat"); 1440 ret = 1; 1441 break; 1442 } 1443 } 1444 1445 if (S_ISREG(sb.st_mode)) { 1446 add_file(td, full_path, 0, 1); 1447 continue; 1448 } 1449 if (!S_ISDIR(sb.st_mode)) 1450 continue; 1451 1452 ret = recurse_dir(td, full_path); 1453 if (ret) 1454 break; 1455 } 1456 1457 closedir(D); 1458 return ret; 1459 } 1460 1461 int add_dir_files(struct thread_data *td, const char *path) 1462 { 1463 int ret = recurse_dir(td, path); 1464 1465 if (!ret) 1466 log_info("fio: opendir added %d files\n", td->o.nr_files); 1467 1468 return ret; 1469 } 1470 1471 void dup_files(struct thread_data *td, struct thread_data *org) 1472 { 1473 struct fio_file *f; 1474 unsigned int i; 1475 1476 dprint(FD_FILE, "dup files: %d\n", org->files_index); 1477 1478 if (!org->files) 1479 return; 1480 1481 td->files = malloc(org->files_index * sizeof(f)); 1482 1483 if (td->o.file_lock_mode != FILE_LOCK_NONE) 1484 td->file_locks = malloc(org->files_index); 1485 1486 for_each_file(org, f, i) { 1487 struct fio_file *__f; 1488 1489 __f = alloc_new_file(td); 1490 1491 if (f->file_name) { 1492 __f->file_name = smalloc_strdup(f->file_name); 1493 if (!__f->file_name) { 1494 log_err("fio: smalloc OOM\n"); 1495 assert(0); 1496 } 1497 1498 __f->filetype = f->filetype; 1499 } 1500 1501 if (td->o.file_lock_mode == FILE_LOCK_EXCLUSIVE) 1502 __f->lock = f->lock; 1503 else if (td->o.file_lock_mode == FILE_LOCK_READWRITE) 1504 __f->rwlock = f->rwlock; 1505 1506 td->files[i] = __f; 1507 } 1508 } 1509 1510 /* 1511 * Returns the index that matches the filename, or -1 if not there 1512 */ 1513 int get_fileno(struct thread_data *td, const char *fname) 1514 { 1515 struct fio_file *f; 1516 unsigned int i; 1517 1518 for_each_file(td, f, i) 1519 if (!strcmp(f->file_name, fname)) 1520 return i; 1521 1522 return -1; 1523 } 1524 1525 /* 1526 * For log usage, where we add/open/close files automatically 1527 */ 1528 void free_release_files(struct thread_data *td) 1529 { 1530 close_files(td); 1531 td->o.nr_files = 0; 1532 td->o.open_files = 0; 1533 td->files_index = 0; 1534 td->nr_normal_files = 0; 1535 } 1536 1537 void fio_file_reset(struct thread_data *td, struct fio_file *f) 1538 { 1539 int i; 1540 1541 for (i = 0; i < DDIR_RWDIR_CNT; i++) { 1542 f->last_pos[i] = f->file_offset; 1543 f->last_start[i] = -1ULL; 1544 } 1545 1546 if (fio_file_axmap(f)) 1547 axmap_reset(f->io_axmap); 1548 else if (fio_file_lfsr(f)) 1549 lfsr_reset(&f->lfsr, td->rand_seeds[FIO_RAND_BLOCK_OFF]); 1550 } 1551 1552 int fio_files_done(struct thread_data *td) 1553 { 1554 struct fio_file *f; 1555 unsigned int i; 1556 1557 for_each_file(td, f, i) 1558 if (!fio_file_done(f)) 1559 return 0; 1560 1561 return 1; 1562 } 1563 1564 /* free memory used in initialization phase only */ 1565 void filesetup_mem_free(void) 1566 { 1567 free_already_allocated(); 1568 } 1569
