| | 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 | |
| | 15 | static int root_warn; |
| | 16 | |
| | 17 | static inline void clear_error(struct thread_data *td) |
| | 18 | { |
| | 19 | td->error = 0; |
| | 20 | td->verror[0] = '\0'; |
| | 21 | } |
| | 22 | |
| | 23 | /* |
| | 24 | * Leaves f->fd open on success, caller must close |
| | 25 | */ |
| | 26 | static int extend_file(struct thread_data *td, struct fio_file *f) |
| | 27 | { |
| | 28 | int r, new_layout = 0, unlink_file = 0, flags; |
| | 29 | unsigned long long left; |
| | 30 | unsigned int bs; |
| | 31 | char *b; |
| | 32 | |
| | 33 | if (read_only) { |
| | 34 | log_err("fio: refusing extend of file due to read-only\n"); |
| | 35 | return 0; |
| | 36 | } |
| | 37 | |
| | 38 | /* |
| | 39 | * check if we need to lay the file out complete again. fio |
| | 40 | * does that for operations involving reads, or for writes |
| | 41 | * where overwrite is set |
| | 42 | */ |
| | 43 | if (td_read(td) || (td_write(td) && td->o.overwrite) || |
| | 44 | (td_write(td) && td->io_ops->flags & FIO_NOEXTEND)) |
| | 45 | new_layout = 1; |
| | 46 | if (td_write(td) && !td->o.overwrite) |
| | 47 | unlink_file = 1; |
| | 48 | |
| | 49 | if (unlink_file || new_layout) { |
| | 50 | dprint(FD_FILE, "layout unlink %s\n", f->file_name); |
| | 51 | if ((unlink(f->file_name) < 0) && (errno != ENOENT)) { |
| | 52 | td_verror(td, errno, "unlink"); |
| | 53 | return 1; |
| | 54 | } |
| | 55 | } |
| | 56 | |
| | 57 | flags = O_WRONLY | O_CREAT; |
| | 58 | if (new_layout) |
| | 59 | flags |= O_TRUNC; |
| | 60 | |
| | 61 | dprint(FD_FILE, "open file %s, flags %x\n", f->file_name, flags); |
| | 62 | f->fd = open(f->file_name, flags, 0644); |
| | 63 | if (f->fd < 0) { |
| | 64 | td_verror(td, errno, "open"); |
| | 65 | return 1; |
| | 66 | } |
| | 67 | |
| | 68 | #ifdef FIO_HAVE_FALLOCATE |
| | 69 | if (td->o.fallocate && !td->o.fill_device) { |
| | 70 | dprint(FD_FILE, "fallocate file %s size %llu\n", f->file_name, |
| | 71 | f->real_file_size); |
| | 72 | |
| | 73 | r = posix_fallocate(f->fd, 0, f->real_file_size); |
| | 74 | if (r > 0) { |
| | 75 | log_err("fio: posix_fallocate fails: %s\n", |
| | 76 | strerror(r)); |
| | 77 | } |
| | 78 | } |
| | 79 | #endif |
| | 80 | |
| | 81 | if (!new_layout) |
| | 82 | goto done; |
| | 83 | |
| | 84 | /* |
| | 85 | * The size will be -1ULL when fill_device is used, so don't truncate |
| | 86 | * or fallocate this file, just write it |
| | 87 | */ |
| | 88 | if (!td->o.fill_device) { |
| | 89 | dprint(FD_FILE, "truncate file %s, size %llu\n", f->file_name, |
| | 90 | f->real_file_size); |
| | 91 | if (ftruncate(f->fd, f->real_file_size) == -1) { |
| | 92 | td_verror(td, errno, "ftruncate"); |
| | 93 | goto err; |
| | 94 | } |
| | 95 | } |
| | 96 | |
| | 97 | b = malloc(td->o.max_bs[DDIR_WRITE]); |
| | 98 | memset(b, 0, td->o.max_bs[DDIR_WRITE]); |
| | 99 | |
| | 100 | left = f->real_file_size; |
| | 101 | while (left && !td->terminate) { |
| | 102 | bs = td->o.max_bs[DDIR_WRITE]; |
| | 103 | if (bs > left) |
| | 104 | bs = left; |
| | 105 | |
| | 106 | r = write(f->fd, b, bs); |
| | 107 | |
| | 108 | if (r > 0) { |
| | 109 | left -= r; |
| | 110 | continue; |
| | 111 | } else { |
| | 112 | if (r < 0) { |
| | 113 | int __e = errno; |
| | 114 | |
| | 115 | if (__e == ENOSPC) { |
| | 116 | if (td->o.fill_device) |
| | 117 | break; |
| | 118 | log_info("fio: ENOSPC on laying out " |
| | 119 | "file, stopping\n"); |
| | 120 | break; |
| | 121 | } |
| | 122 | td_verror(td, errno, "write"); |
| | 123 | } else |
| | 124 | td_verror(td, EIO, "write"); |
| | 125 | |
| | 126 | break; |
| | 127 | } |
| | 128 | } |
| | 129 | |
| | 130 | if (td->terminate) { |
| | 131 | dprint(FD_FILE, "terminate unlink %s\n", f->file_name); |
| | 132 | unlink(f->file_name); |
| | 133 | } else if (td->o.create_fsync) { |
| | 134 | if (fsync(f->fd) < 0) { |
| | 135 | td_verror(td, errno, "fsync"); |
| | 136 | goto err; |
| | 137 | } |
| | 138 | } |
| | 139 | if (td->o.fill_device && !td_write(td)) { |
| | 140 | fio_file_clear_size_known(f); |
| | 141 | if (td_io_get_file_size(td, f)) |
| | 142 | goto err; |
| | 143 | if (f->io_size > f->real_file_size) |
| | 144 | f->io_size = f->real_file_size; |
| | 145 | } |
| | 146 | |
| | 147 | free(b); |
| | 148 | done: |
| | 149 | return 0; |
| | 150 | err: |
| | 151 | close(f->fd); |
| | 152 | f->fd = -1; |
| | 153 | return 1; |
| | 154 | } |
| | 155 | |
| | 156 | static int pre_read_file(struct thread_data *td, struct fio_file *f) |
| | 157 | { |
| | 158 | int r, did_open = 0, old_runstate; |
| | 159 | unsigned long long left; |
| | 160 | unsigned int bs; |
| | 161 | char *b; |
| | 162 | |
| | 163 | if (td->io_ops->flags & FIO_PIPEIO) |
| | 164 | return 0; |
| | 165 | |
| | 166 | if (!fio_file_open(f)) { |
| | 167 | if (td->io_ops->open_file(td, f)) { |
| | 168 | log_err("fio: cannot pre-read, failed to open file\n"); |
| | 169 | return 1; |
| | 170 | } |
| | 171 | did_open = 1; |
| | 172 | } |
| | 173 | |
| | 174 | old_runstate = td->runstate; |
| | 175 | td_set_runstate(td, TD_PRE_READING); |
| | 176 | |
| | 177 | bs = td->o.max_bs[DDIR_READ]; |
| | 178 | b = malloc(bs); |
| | 179 | memset(b, 0, bs); |
| | 180 | |
| | 181 | lseek(f->fd, f->file_offset, SEEK_SET); |
| | 182 | left = f->io_size; |
| | 183 | |
| | 184 | while (left && !td->terminate) { |
| | 185 | if (bs > left) |
| | 186 | bs = left; |
| | 187 | |
| | 188 | r = read(f->fd, b, bs); |
| | 189 | |
| | 190 | if (r == (int) bs) { |
| | 191 | left -= bs; |
| | 192 | continue; |
| | 193 | } else { |
| | 194 | td_verror(td, EIO, "pre_read"); |
| | 195 | break; |
| | 196 | } |
| | 197 | } |
| | 198 | |
| | 199 | td_set_runstate(td, old_runstate); |
| | 200 | |
| | 201 | if (did_open) |
| | 202 | td->io_ops->close_file(td, f); |
| | 203 | free(b); |
| | 204 | return 0; |
| | 205 | } |
| | 206 | |
| | 207 | static unsigned long long get_rand_file_size(struct thread_data *td) |
| | 208 | { |
| | 209 | unsigned long long ret, sized; |
| | 210 | long r; |
| | 211 | |
| | 212 | r = os_random_long(&td->file_size_state); |
| | 213 | sized = td->o.file_size_high - td->o.file_size_low; |
| | 214 | ret = (unsigned long long) ((double) sized * (r / (OS_RAND_MAX + 1.0))); |
| | 215 | ret += td->o.file_size_low; |
| | 216 | ret -= (ret % td->o.rw_min_bs); |
| | 217 | return ret; |
| | 218 | } |
| | 219 | |
| | 220 | static int file_size(struct thread_data *td, struct fio_file *f) |
| | 221 | { |
| | 222 | struct stat st; |
| | 223 | |
| | 224 | if (stat(f->file_name, &st) == -1) { |
| | 225 | td_verror(td, errno, "fstat"); |
| | 226 | return 1; |
| | 227 | } |
| | 228 | |
| | 229 | f->real_file_size = st.st_size; |
| | 230 | return 0; |
| | 231 | } |
| | 232 | |
| | 233 | static int bdev_size(struct thread_data *td, struct fio_file *f) |
| | 234 | { |
| | 235 | unsigned long long bytes; |
| | 236 | int r; |
| | 237 | |
| | 238 | if (td->io_ops->open_file(td, f)) { |
| | 239 | log_err("fio: failed opening blockdev %s for size check\n", |
| | 240 | f->file_name); |
| | 241 | return 1; |
| | 242 | } |
| | 243 | |
| | 244 | r = blockdev_size(f->fd, &bytes); |
| | 245 | if (r) { |
| | 246 | td_verror(td, r, "blockdev_size"); |
| | 247 | goto err; |
| | 248 | } |
| | 249 | |
| | 250 | if (!bytes) { |
| | 251 | log_err("%s: zero sized block device?\n", f->file_name); |
| | 252 | goto err; |
| | 253 | } |
| | 254 | |
| | 255 | f->real_file_size = bytes; |
| | 256 | td->io_ops->close_file(td, f); |
| | 257 | return 0; |
| | 258 | err: |
| | 259 | td->io_ops->close_file(td, f); |
| | 260 | return 1; |
| | 261 | } |
| | 262 | |
| | 263 | static int char_size(struct thread_data *td, struct fio_file *f) |
| | 264 | { |
| | 265 | #ifdef FIO_HAVE_CHARDEV_SIZE |
| | 266 | unsigned long long bytes; |
| | 267 | int r; |
| | 268 | |
| | 269 | if (td->io_ops->open_file(td, f)) { |
| | 270 | log_err("fio: failed opening blockdev %s for size check\n", |
| | 271 | f->file_name); |
| | 272 | return 1; |
| | 273 | } |
| | 274 | |
| | 275 | r = chardev_size(f->fd, &bytes); |
| | 276 | if (r) { |
| | 277 | td_verror(td, r, "chardev_size"); |
| | 278 | goto err; |
| | 279 | } |
| | 280 | |
| | 281 | if (!bytes) { |
| | 282 | log_err("%s: zero sized char device?\n", f->file_name); |
| | 283 | goto err; |
| | 284 | } |
| | 285 | |
| | 286 | f->real_file_size = bytes; |
| | 287 | td->io_ops->close_file(td, f); |
| | 288 | return 0; |
| | 289 | err: |
| | 290 | td->io_ops->close_file(td, f); |
| | 291 | return 1; |
| | 292 | #else |
| | 293 | f->real_file_size = -1ULL; |
| | 294 | return 0; |
| | 295 | #endif |
| | 296 | } |
| | 297 | |
| | 298 | static int get_file_size(struct thread_data *td, struct fio_file *f) |
| | 299 | { |
| | 300 | int ret = 0; |
| | 301 | |
| | 302 | if (fio_file_size_known(f)) |
| | 303 | return 0; |
| | 304 | |
| | 305 | if (f->filetype == FIO_TYPE_FILE) |
| | 306 | ret = file_size(td, f); |
| | 307 | else if (f->filetype == FIO_TYPE_BD) |
| | 308 | ret = bdev_size(td, f); |
| | 309 | else if (f->filetype == FIO_TYPE_CHAR) |
| | 310 | ret = char_size(td, f); |
| | 311 | else |
| | 312 | f->real_file_size = -1; |
| | 313 | |
| | 314 | if (ret) |
| | 315 | return ret; |
| | 316 | |
| | 317 | if (f->file_offset > f->real_file_size) { |
| | 318 | log_err("%s: offset extends end (%Lu > %Lu)\n", td->o.name, |
| | 319 | f->file_offset, f->real_file_size); |
| | 320 | return 1; |
| | 321 | } |
| | 322 | |
| | 323 | fio_file_set_size_known(f); |
| | 324 | return 0; |
| | 325 | } |
| | 326 | |
| | 327 | static int __file_invalidate_cache(struct thread_data *td, struct fio_file *f, |
| | 328 | unsigned long long off, |
| | 329 | unsigned long long len) |
| | 330 | { |
| | 331 | int ret = 0; |
| | 332 | |
| | 333 | if (len == -1ULL) |
| | 334 | len = f->io_size; |
| | 335 | if (off == -1ULL) |
| | 336 | off = f->file_offset; |
| | 337 | |
| | 338 | if (len == -1ULL || off == -1ULL) |
| | 339 | return 0; |
| | 340 | |
| | 341 | dprint(FD_IO, "invalidate cache %s: %llu/%llu\n", f->file_name, off, |
| | 342 | len); |
| | 343 | |
| | 344 | /* |
| | 345 | * FIXME: add blockdev flushing too |
| | 346 | */ |
| | 347 | if (f->mmap_ptr) { |
| | 348 | ret = madvise(f->mmap_ptr, f->mmap_sz, MADV_DONTNEED); |
| | 349 | #ifdef FIO_MADV_FREE |
| | 350 | (void) madvise(f->mmap_ptr, f->mmap_sz, FIO_MADV_FREE); |
| | 351 | #endif |
| | 352 | } else if (f->filetype == FIO_TYPE_FILE) { |
| | 353 | ret = fadvise(f->fd, off, len, POSIX_FADV_DONTNEED); |
| | 354 | } else if (f->filetype == FIO_TYPE_BD) { |
| | 355 | ret = blockdev_invalidate_cache(f->fd); |
| | 356 | if (ret < 0 && errno == EACCES && geteuid()) { |
| | 357 | if (!root_warn) { |
| | 358 | log_err("fio: only root may flush block " |
| | 359 | "devices. Cache flush bypassed!\n"); |
| | 360 | root_warn = 1; |
| | 361 | } |
| | 362 | ret = 0; |
| | 363 | } |
| | 364 | } else if (f->filetype == FIO_TYPE_CHAR || f->filetype == FIO_TYPE_PIPE) |
| | 365 | ret = 0; |
| | 366 | |
| | 367 | if (ret < 0) { |
| | 368 | td_verror(td, errno, "invalidate_cache"); |
| | 369 | return 1; |
| | 370 | } else if (ret > 0) { |
| | 371 | td_verror(td, ret, "invalidate_cache"); |
| | 372 | return 1; |
| | 373 | } |
| | 374 | |
| | 375 | return ret; |
| | 376 | |
| | 377 | } |
| | 378 | |
| | 379 | int file_invalidate_cache(struct thread_data *td, struct fio_file *f) |
| | 380 | { |
| | 381 | if (!fio_file_open(f)) |
| | 382 | return 0; |
| | 383 | |
| | 384 | return __file_invalidate_cache(td, f, -1ULL, -1ULL); |
| | 385 | } |
| | 386 | |
| | 387 | int generic_close_file(struct thread_data fio_unused *td, struct fio_file *f) |
| | 388 | { |
| | 389 | int ret = 0; |
| | 390 | |
| | 391 | dprint(FD_FILE, "fd close %s\n", f->file_name); |
| | 392 | |
| | 393 | remove_file_hash(f); |
| | 394 | |
| | 395 | if (close(f->fd) < 0) |
| | 396 | ret = errno; |
| | 397 | |
| | 398 | f->fd = -1; |
| | 399 | return ret; |
| | 400 | } |
| | 401 | |
| | 402 | static int file_lookup_open(struct fio_file *f, int flags) |
| | 403 | { |
| | 404 | struct fio_file *__f; |
| | 405 | int from_hash; |
| | 406 | |
| | 407 | __f = lookup_file_hash(f->file_name); |
| | 408 | if (__f) { |
| | 409 | dprint(FD_FILE, "found file in hash %s\n", f->file_name); |
| | 410 | /* |
| | 411 | * racy, need the __f->lock locked |
| | 412 | */ |
| | 413 | f->lock = __f->lock; |
| | 414 | f->lock_owner = __f->lock_owner; |
| | 415 | f->lock_batch = __f->lock_batch; |
| | 416 | f->lock_ddir = __f->lock_ddir; |
| | 417 | from_hash = 1; |
| | 418 | } else { |
| | 419 | dprint(FD_FILE, "file not found in hash %s\n", f->file_name); |
| | 420 | from_hash = 0; |
| | 421 | } |
| | 422 | |
| | 423 | f->fd = open(f->file_name, flags, 0600); |
| | 424 | return from_hash; |
| | 425 | } |
| | 426 | |
| | 427 | int generic_open_file(struct thread_data *td, struct fio_file *f) |
| | 428 | { |
| | 429 | int is_std = 0; |
| | 430 | int flags = 0; |
| | 431 | int from_hash = 0; |
| | 432 | |
| | 433 | dprint(FD_FILE, "fd open %s\n", f->file_name); |
| | 434 | |
| | 435 | if (!strcmp(f->file_name, "-")) { |
| | 436 | if (td_rw(td)) { |
| | 437 | log_err("fio: can't read/write to stdin/out\n"); |
| | 438 | return 1; |
| | 439 | } |
| | 440 | is_std = 1; |
| | 441 | |
| | 442 | /* |
| | 443 | * move output logging to stderr, if we are writing to stdout |
| | 444 | */ |
| | 445 | if (td_write(td)) |
| | 446 | f_out = stderr; |
| | 447 | } |
| | 448 | |
| | 449 | if (td->o.odirect) |
| | 450 | flags |= OS_O_DIRECT; |
| | 451 | if (td->o.sync_io) |
| | 452 | flags |= O_SYNC; |
| | 453 | if (f->filetype != FIO_TYPE_FILE) |
| | 454 | flags |= FIO_O_NOATIME; |
| | 455 | if (td->o.create_on_open) |
| | 456 | flags |= O_CREAT; |
| | 457 | |
| | 458 | open_again: |
| | 459 | if (td_write(td)) { |
| | 460 | if (!read_only) |
| | 461 | flags |= O_RDWR; |
| | 462 | |
| | 463 | if (f->filetype == FIO_TYPE_FILE) |
| | 464 | flags |= O_CREAT; |
| | 465 | |
| | 466 | if (is_std) |
| | 467 | f->fd = dup(STDOUT_FILENO); |
| | 468 | else |
| | 469 | from_hash = file_lookup_open(f, flags); |
| | 470 | } else { |
| | 471 | if (f->filetype == FIO_TYPE_CHAR && !read_only) |
| | 472 | flags |= O_RDWR; |
| | 473 | else |
| | 474 | flags |= O_RDONLY; |
| | 475 | |
| | 476 | if (is_std) |
| | 477 | f->fd = dup(STDIN_FILENO); |
| | 478 | else |
| | 479 | from_hash = file_lookup_open(f, flags); |
| | 480 | } |
| | 481 | |
| | 482 | if (f->fd == -1) { |
| | 483 | char buf[FIO_VERROR_SIZE]; |
| | 484 | int __e = errno; |
| | 485 | |
| | 486 | if (__e == EPERM && (flags & FIO_O_NOATIME)) { |
| | 487 | flags &= ~FIO_O_NOATIME; |
| | 488 | goto open_again; |
| | 489 | } |
| | 490 | |
| | 491 | snprintf(buf, sizeof(buf) - 1, "open(%s)", f->file_name); |
| | 492 | |
| | 493 | td_verror(td, __e, buf); |
| | 494 | } |
| | 495 | |
| | 496 | if (!from_hash && f->fd != -1) { |
| | 497 | if (add_file_hash(f)) { |
| | 498 | int ret; |
| | 499 | |
| | 500 | /* |
| | 501 | * OK to ignore, we haven't done anything with it |
| | 502 | */ |
| | 503 | ret = generic_close_file(td, f); |
| | 504 | goto open_again; |
| | 505 | } |
| | 506 | } |
| | 507 | |
| | 508 | return 0; |
| | 509 | } |
| | 510 | |
| | 511 | int generic_get_file_size(struct thread_data *td, struct fio_file *f) |
| | 512 | { |
| | 513 | return get_file_size(td, f); |
| | 514 | } |
| | 515 | |
| | 516 | /* |
| | 517 | * open/close all files, so that ->real_file_size gets set |
| | 518 | */ |
| | 519 | static int get_file_sizes(struct thread_data *td) |
| | 520 | { |
| | 521 | struct fio_file *f; |
| | 522 | unsigned int i; |
| | 523 | int err = 0; |
| | 524 | |
| | 525 | for_each_file(td, f, i) { |
| | 526 | dprint(FD_FILE, "get file size for %p/%d/%p\n", f, i, |
| | 527 | f->file_name); |
| | 528 | |
| | 529 | if (td_io_get_file_size(td, f)) { |
| | 530 | if (td->error != ENOENT) { |
| | 531 | log_err("%s\n", td->verror); |
| | 532 | err = 1; |
| | 533 | } |
| | 534 | clear_error(td); |
| | 535 | } |
| | 536 | |
| | 537 | if (f->real_file_size == -1ULL && td->o.size) |
| | 538 | f->real_file_size = td->o.size / td->o.nr_files; |
| | 539 | } |
| | 540 | |
| | 541 | return err; |
| | 542 | } |
| | 543 | |
| | 544 | struct fio_mount { |
| | 545 | struct flist_head list; |
| | 546 | const char *base; |
| | 547 | char __base[256]; |
| | 548 | unsigned int key; |
| | 549 | }; |
| | 550 | |
| | 551 | /* |
| | 552 | * Get free number of bytes for each file on each unique mount. |
| | 553 | */ |
| | 554 | static unsigned long long get_fs_free_counts(struct thread_data *td) |
| | 555 | { |
| | 556 | struct flist_head *n, *tmp; |
| | 557 | unsigned long long ret = 0; |
| | 558 | struct fio_mount *fm; |
| | 559 | FLIST_HEAD(list); |
| | 560 | struct fio_file *f; |
| | 561 | unsigned int i; |
| | 562 | |
| | 563 | for_each_file(td, f, i) { |
| | 564 | struct stat sb; |
| | 565 | char buf[256]; |
| | 566 | |
| | 567 | if (f->filetype == FIO_TYPE_BD || f->filetype == FIO_TYPE_CHAR) { |
| | 568 | if (f->real_file_size != -1ULL) |
| | 569 | ret += f->real_file_size; |
| | 570 | continue; |
| | 571 | } else if (f->filetype != FIO_TYPE_FILE) |
| | 572 | continue; |
| | 573 | |
| | 574 | strcpy(buf, f->file_name); |
| | 575 | |
| | 576 | if (stat(buf, &sb) < 0) { |
| | 577 | if (errno != ENOENT) |
| | 578 | break; |
| | 579 | strcpy(buf, "."); |
| | 580 | if (stat(buf, &sb) < 0) |
| | 581 | break; |
| | 582 | } |
| | 583 | |
| | 584 | fm = NULL; |
| | 585 | flist_for_each(n, &list) { |
| | 586 | fm = flist_entry(n, struct fio_mount, list); |
| | 587 | if (fm->key == sb.st_dev) |
| | 588 | break; |
| | 589 | |
| | 590 | fm = NULL; |
| | 591 | } |
| | 592 | |
| | 593 | if (fm) |
| | 594 | continue; |
| | 595 | |
| | 596 | fm = malloc(sizeof(*fm)); |
| | 597 | strcpy(fm->__base, buf); |
| | 598 | fm->base = basename(fm->__base); |
| | 599 | fm->key = sb.st_dev; |
| | 600 | flist_add(&fm->list, &list); |
| | 601 | } |
| | 602 | |
| | 603 | flist_for_each_safe(n, tmp, &list) { |
| | 604 | unsigned long long sz; |
| | 605 | |
| | 606 | fm = flist_entry(n, struct fio_mount, list); |
| | 607 | flist_del(&fm->list); |
| | 608 | |
| | 609 | sz = get_fs_size(fm->base); |
| | 610 | if (sz && sz != -1ULL) |
| | 611 | ret += sz; |
| | 612 | |
| | 613 | free(fm); |
| | 614 | } |
| | 615 | |
| | 616 | return ret; |
| | 617 | } |
| | 618 | |
| | 619 | /* |
| | 620 | * Open the files and setup files sizes, creating files if necessary. |
| | 621 | */ |
| | 622 | int setup_files(struct thread_data *td) |
| | 623 | { |
| | 624 | unsigned long long total_size, extend_size; |
| | 625 | struct fio_file *f; |
| | 626 | unsigned int i; |
| | 627 | int err = 0, need_extend; |
| | 628 | |
| | 629 | dprint(FD_FILE, "setup files\n"); |
| | 630 | |
| | 631 | if (td->o.read_iolog_file) |
| | 632 | return 0; |
| | 633 | |
| | 634 | /* |
| | 635 | * if ioengine defines a setup() method, it's responsible for |
| | 636 | * opening the files and setting f->real_file_size to indicate |
| | 637 | * the valid range for that file. |
| | 638 | */ |
| | 639 | if (td->io_ops->setup) |
| | 640 | err = td->io_ops->setup(td); |
| | 641 | else |
| | 642 | err = get_file_sizes(td); |
| | 643 | |
| | 644 | if (err) |
| | 645 | return err; |
| | 646 | |
| | 647 | /* |
| | 648 | * check sizes. if the files/devices do not exist and the size |
| | 649 | * isn't passed to fio, abort. |
| | 650 | */ |
| | 651 | total_size = 0; |
| | 652 | for_each_file(td, f, i) { |
| | 653 | if (f->real_file_size == -1ULL) |
| | 654 | total_size = -1ULL; |
| | 655 | else |
| | 656 | total_size += f->real_file_size; |
| | 657 | } |
| | 658 | |
| | 659 | if (td->o.fill_device) |
| | 660 | td->fill_device_size = get_fs_free_counts(td); |
| | 661 | |
| | 662 | /* |
| | 663 | * device/file sizes are zero and no size given, punt |
| | 664 | */ |
| | 665 | if ((!total_size || total_size == -1ULL) && !td->o.size && |
| | 666 | !(td->io_ops->flags & FIO_NOIO) && !td->o.fill_device) { |
| | 667 | log_err("%s: you need to specify size=\n", td->o.name); |
| | 668 | td_verror(td, EINVAL, "total_file_size"); |
| | 669 | return 1; |
| | 670 | } |
| | 671 | |
| | 672 | /* |
| | 673 | * now file sizes are known, so we can set ->io_size. if size= is |
| | 674 | * not given, ->io_size is just equal to ->real_file_size. if size |
| | 675 | * is given, ->io_size is size / nr_files. |
| | 676 | */ |
| | 677 | extend_size = total_size = 0; |
| | 678 | need_extend = 0; |
| | 679 | for_each_file(td, f, i) { |
| | 680 | f->file_offset = td->o.start_offset; |
| | 681 | |
| | 682 | if (!td->o.file_size_low) { |
| | 683 | /* |
| | 684 | * no file size range given, file size is equal to |
| | 685 | * total size divided by number of files. if that is |
| | 686 | * zero, set it to the real file size. |
| | 687 | */ |
| | 688 | f->io_size = td->o.size / td->o.nr_files; |
| | 689 | if (!f->io_size) |
| | 690 | f->io_size = f->real_file_size - f->file_offset; |
| | 691 | } else if (f->real_file_size < td->o.file_size_low || |
| | 692 | f->real_file_size > td->o.file_size_high) { |
| | 693 | if (f->file_offset > td->o.file_size_low) |
| | 694 | goto err_offset; |
| | 695 | /* |
| | 696 | * file size given. if it's fixed, use that. if it's a |
| | 697 | * range, generate a random size in-between. |
| | 698 | */ |
| | 699 | if (td->o.file_size_low == td->o.file_size_high) { |
| | 700 | f->io_size = td->o.file_size_low |
| | 701 | - f->file_offset; |
| | 702 | } else { |
| | 703 | f->io_size = get_rand_file_size(td) |
| | 704 | - f->file_offset; |
| | 705 | } |
| | 706 | } else |
| | 707 | f->io_size = f->real_file_size - f->file_offset; |
| | 708 | |
| | 709 | if (f->io_size == -1ULL) |
| | 710 | total_size = -1ULL; |
| | 711 | else |
| | 712 | total_size += f->io_size; |
| | 713 | |
| | 714 | if (f->filetype == FIO_TYPE_FILE && |
| | 715 | (f->io_size + f->file_offset) > f->real_file_size && |
| | 716 | !(td->io_ops->flags & FIO_DISKLESSIO)) { |
| | 717 | if (!td->o.create_on_open) { |
| | 718 | need_extend++; |
| | 719 | extend_size += (f->io_size + f->file_offset); |
| | 720 | } else |
| | 721 | f->real_file_size = f->io_size + f->file_offset; |
| | 722 | fio_file_set_extend(f); |
| | 723 | } |
| | 724 | } |
| | 725 | |
| | 726 | if (!td->o.size || td->o.size > total_size) |
| | 727 | td->o.size = total_size; |
| | 728 | |
| | 729 | /* |
| | 730 | * See if we need to extend some files |
| | 731 | */ |
| | 732 | if (need_extend) { |
| | 733 | temp_stall_ts = 1; |
| | 734 | if (!terse_output) |
| | 735 | log_info("%s: Laying out IO file(s) (%u file(s) /" |
| | 736 | " %LuMB)\n", td->o.name, need_extend, |
| | 737 | extend_size >> 20); |
| | 738 | |
| | 739 | for_each_file(td, f, i) { |
| | 740 | unsigned long long old_len = -1ULL, extend_len = -1ULL; |
| | 741 | |
| | 742 | if (!fio_file_extend(f)) |
| | 743 | continue; |
| | 744 | |
| | 745 | assert(f->filetype == FIO_TYPE_FILE); |
| | 746 | fio_file_clear_extend(f); |
| | 747 | if (!td->o.fill_device) { |
| | 748 | old_len = f->real_file_size; |
| | 749 | extend_len = f->io_size + f->file_offset - |
| | 750 | old_len; |
| | 751 | } |
| | 752 | f->real_file_size = (f->io_size + f->file_offset); |
| | 753 | err = extend_file(td, f); |
| | 754 | if (err) |
| | 755 | break; |
| | 756 | |
| | 757 | err = __file_invalidate_cache(td, f, old_len, |
| | 758 | extend_len); |
| | 759 | close(f->fd); |
| | 760 | f->fd = -1; |
| | 761 | if (err) |
| | 762 | break; |
| | 763 | } |
| | 764 | temp_stall_ts = 0; |
| | 765 | } |
| | 766 | |
| | 767 | if (err) |
| | 768 | return err; |
| | 769 | |
| | 770 | if (!td->o.zone_size) |
| | 771 | td->o.zone_size = td->o.size; |
| | 772 | |
| | 773 | /* |
| | 774 | * iolog already set the total io size, if we read back |
| | 775 | * stored entries. |
| | 776 | */ |
| | 777 | if (!td->o.read_iolog_file) |
| | 778 | td->total_io_size = td->o.size * td->o.loops; |
| | 779 | return 0; |
| | 780 | err_offset: |
| | 781 | log_err("%s: you need to specify valid offset=\n", td->o.name); |
| | 782 | return 1; |
| | 783 | } |
| | 784 | |
| | 785 | int pre_read_files(struct thread_data *td) |
| | 786 | { |
| | 787 | struct fio_file *f; |
| | 788 | unsigned int i; |
| | 789 | |
| | 790 | dprint(FD_FILE, "pre_read files\n"); |
| | 791 | |
| | 792 | for_each_file(td, f, i) { |
| | 793 | pre_read_file(td, f); |
| | 794 | } |
| | 795 | |
| | 796 | return 1; |
| | 797 | } |
| | 798 | |
| | 799 | int init_random_map(struct thread_data *td) |
| | 800 | { |
| | 801 | unsigned long long blocks, num_maps; |
| | 802 | struct fio_file *f; |
| | 803 | unsigned int i; |
| | 804 | |
| | 805 | if (td->o.norandommap || !td_random(td)) |
| | 806 | return 0; |
| | 807 | |
| | 808 | for_each_file(td, f, i) { |
| | 809 | blocks = (f->real_file_size + td->o.rw_min_bs - 1) / |
| | 810 | (unsigned long long) td->o.rw_min_bs; |
| | 811 | num_maps = (blocks + BLOCKS_PER_MAP - 1) / |
| | 812 | (unsigned long long) BLOCKS_PER_MAP; |
| | 813 | f->file_map = smalloc(num_maps * sizeof(int)); |
| | 814 | if (f->file_map) { |
| | 815 | f->num_maps = num_maps; |
| | 816 | continue; |
| | 817 | } |
| | 818 | if (!td->o.softrandommap) { |
| | 819 | log_err("fio: failed allocating random map. If running" |
| | 820 | " a large number of jobs, try the 'norandommap'" |
| | 821 | " option or set 'softrandommap'. Or give" |
| | 822 | " a larger --alloc-size to fio.\n"); |
| | 823 | return 1; |
| | 824 | } |
| | 825 | |
| | 826 | log_info("fio: file %s failed allocating random map. Running " |
| | 827 | "job without.\n", f->file_name); |
| | 828 | f->num_maps = 0; |
| | 829 | } |
| | 830 | |
| | 831 | return 0; |
| | 832 | } |
| | 833 | |
| | 834 | void close_files(struct thread_data *td) |
| | 835 | { |
| | 836 | struct fio_file *f; |
| | 837 | unsigned int i; |
| | 838 | |
| | 839 | for_each_file(td, f, i) { |
| | 840 | if (fio_file_open(f)) |
| | 841 | td_io_close_file(td, f); |
| | 842 | } |
| | 843 | } |
| | 844 | |
| | 845 | void close_and_free_files(struct thread_data *td) |
| | 846 | { |
| | 847 | struct fio_file *f; |
| | 848 | unsigned int i; |
| | 849 | |
| | 850 | dprint(FD_FILE, "close files\n"); |
| | 851 | |
| | 852 | for_each_file(td, f, i) { |
| | 853 | if (td->o.unlink && f->filetype == FIO_TYPE_FILE) { |
| | 854 | dprint(FD_FILE, "free unlink %s\n", f->file_name); |
| | 855 | unlink(f->file_name); |
| | 856 | } |
| | 857 | |
| | 858 | if (fio_file_open(f)) |
| | 859 | td_io_close_file(td, f); |
| | 860 | |
| | 861 | remove_file_hash(f); |
| | 862 | |
| | 863 | sfree(f->file_name); |
| | 864 | f->file_name = NULL; |
| | 865 | sfree(f->file_map); |
| | 866 | f->file_map = NULL; |
| | 867 | sfree(f); |
| | 868 | } |
| | 869 | |
| | 870 | td->o.filename = NULL; |
| | 871 | free(td->files); |
| | 872 | td->files_index = 0; |
| | 873 | td->files = NULL; |
| | 874 | td->o.nr_files = 0; |
| | 875 | } |
| | 876 | |
| | 877 | static void get_file_type(struct fio_file *f) |
| | 878 | { |
| | 879 | struct stat sb; |
| | 880 | |
| | 881 | if (!strcmp(f->file_name, "-")) |
| | 882 | f->filetype = FIO_TYPE_PIPE; |
| | 883 | else |
| | 884 | f->filetype = FIO_TYPE_FILE; |
| | 885 | |
| | 886 | if (!stat(f->file_name, &sb)) { |
| | 887 | if (S_ISBLK(sb.st_mode)) |
| | 888 | f->filetype = FIO_TYPE_BD; |
| | 889 | else if (S_ISCHR(sb.st_mode)) |
| | 890 | f->filetype = FIO_TYPE_CHAR; |
| | 891 | else if (S_ISFIFO(sb.st_mode)) |
| | 892 | f->filetype = FIO_TYPE_PIPE; |
| | 893 | } |
| | 894 | } |
| | 895 | |
| | 896 | int add_file(struct thread_data *td, const char *fname) |
| | 897 | { |
| | 898 | int cur_files = td->files_index; |
| | 899 | char file_name[PATH_MAX]; |
| | 900 | struct fio_file *f; |
| | 901 | int len = 0; |
| | 902 | |
| | 903 | dprint(FD_FILE, "add file %s\n", fname); |
| | 904 | |
| | 905 | f = smalloc(sizeof(*f)); |
| | 906 | if (!f) { |
| | 907 | log_err("fio: smalloc OOM\n"); |
| | 908 | assert(0); |
| | 909 | } |
| | 910 | |
| | 911 | f->fd = -1; |
| | 912 | fio_file_reset(f); |
| | 913 | |
| | 914 | if (td->files_size <= td->files_index) { |
| | 915 | int new_size = td->o.nr_files + 1; |
| | 916 | |
| | 917 | dprint(FD_FILE, "resize file array to %d files\n", new_size); |
| | 918 | |
| | 919 | td->files = realloc(td->files, new_size * sizeof(f)); |
| | 920 | td->files_size = new_size; |
| | 921 | } |
| | 922 | td->files[cur_files] = f; |
| | 923 | |
| | 924 | /* |
| | 925 | * init function, io engine may not be loaded yet |
| | 926 | */ |
| | 927 | if (td->io_ops && (td->io_ops->flags & FIO_DISKLESSIO)) |
| | 928 | f->real_file_size = -1ULL; |
| | 929 | |
| | 930 | if (td->o.directory) |
| | 931 | len = sprintf(file_name, "%s/", td->o.directory); |
| | 932 | |
| | 933 | sprintf(file_name + len, "%s", fname); |
| | 934 | f->file_name = smalloc_strdup(file_name); |
| | 935 | if (!f->file_name) { |
| | 936 | log_err("fio: smalloc OOM\n"); |
| | 937 | assert(0); |
| | 938 | } |
| | 939 | |
| | 940 | get_file_type(f); |
| | 941 | |
| | 942 | switch (td->o.file_lock_mode) { |
| | 943 | case FILE_LOCK_NONE: |
| | 944 | break; |
| | 945 | case FILE_LOCK_READWRITE: |
| | 946 | f->lock = fio_mutex_rw_init(); |
| | 947 | break; |
| | 948 | case FILE_LOCK_EXCLUSIVE: |
| | 949 | f->lock = fio_mutex_init(1); |
| | 950 | break; |
| | 951 | default: |
| | 952 | log_err("fio: unknown lock mode: %d\n", td->o.file_lock_mode); |
| | 953 | assert(0); |
| | 954 | } |
| | 955 | |
| | 956 | td->files_index++; |
| | 957 | if (f->filetype == FIO_TYPE_FILE) |
| | 958 | td->nr_normal_files++; |
| | 959 | |
| | 960 | dprint(FD_FILE, "file %p \"%s\" added at %d\n", f, f->file_name, |
| | 961 | cur_files); |
| | 962 | |
| | 963 | return cur_files; |
| | 964 | } |
| | 965 | |
| | 966 | void get_file(struct fio_file *f) |
| | 967 | { |
| | 968 | dprint(FD_FILE, "get file %s, ref=%d\n", f->file_name, f->references); |
| | 969 | assert(fio_file_open(f)); |
| | 970 | f->references++; |
| | 971 | } |
| | 972 | |
| | 973 | int put_file(struct thread_data *td, struct fio_file *f) |
| | 974 | { |
| | 975 | int f_ret = 0, ret = 0; |
| | 976 | |
| | 977 | dprint(FD_FILE, "put file %s, ref=%d\n", f->file_name, f->references); |
| | 978 | |
| | 979 | if (!fio_file_open(f)) { |
| | 980 | assert(f->fd == -1); |
| | 981 | return 0; |
| | 982 | } |
| | 983 | |
| | 984 | assert(f->references); |
| | 985 | if (--f->references) |
| | 986 | return 0; |
| | 987 | |
| | 988 | if (should_fsync(td) && td->o.fsync_on_close) |
| | 989 | f_ret = fsync(f->fd); |
| | 990 | |
| | 991 | if (td->io_ops->close_file) |
| | 992 | ret = td->io_ops->close_file(td, f); |
| | 993 | |
| | 994 | if (!ret) |
| | 995 | ret = f_ret; |
| | 996 | |
| | 997 | td->nr_open_files--; |
| | 998 | fio_file_clear_open(f); |
| | 999 | assert(f->fd == -1); |
| | 1000 | return ret; |
| | 1001 | } |
| | 1002 | |
| | 1003 | void lock_file(struct thread_data *td, struct fio_file *f, enum fio_ddir ddir) |
| | 1004 | { |
| | 1005 | if (!f->lock || td->o.file_lock_mode == FILE_LOCK_NONE) |
| | 1006 | return; |
| | 1007 | |
| | 1008 | if (f->lock_owner == td && f->lock_batch--) |
| | 1009 | return; |
| | 1010 | |
| | 1011 | if (td->o.file_lock_mode == FILE_LOCK_READWRITE) { |
| | 1012 | if (ddir == DDIR_READ) |
| | 1013 | fio_mutex_down_read(f->lock); |
| | 1014 | else |
| | 1015 | fio_mutex_down_write(f->lock); |
| | 1016 | } else if (td->o.file_lock_mode == FILE_LOCK_EXCLUSIVE) |
| | 1017 | fio_mutex_down(f->lock); |
| | 1018 | |
| | 1019 | f->lock_owner = td; |
| | 1020 | f->lock_batch = td->o.lockfile_batch; |
| | 1021 | f->lock_ddir = ddir; |
| | 1022 | } |
| | 1023 | |
| | 1024 | void unlock_file(struct thread_data *td, struct fio_file *f) |
| | 1025 | { |
| | 1026 | if (!f->lock || td->o.file_lock_mode == FILE_LOCK_NONE) |
| | 1027 | return; |
| | 1028 | if (f->lock_batch) |
| | 1029 | return; |
| | 1030 | |
| | 1031 | if (td->o.file_lock_mode == FILE_LOCK_READWRITE) { |
| | 1032 | const int is_read = f->lock_ddir == DDIR_READ; |
| | 1033 | int val = fio_mutex_getval(f->lock); |
| | 1034 | |
| | 1035 | if ((is_read && val == 1) || (!is_read && val == -1)) |
| | 1036 | f->lock_owner = NULL; |
| | 1037 | |
| | 1038 | if (is_read) |
| | 1039 | fio_mutex_up_read(f->lock); |
| | 1040 | else |
| | 1041 | fio_mutex_up_write(f->lock); |
| | 1042 | } else if (td->o.file_lock_mode == FILE_LOCK_EXCLUSIVE) { |
| | 1043 | int val = fio_mutex_getval(f->lock); |
| | 1044 | |
| | 1045 | if (val == 0) |
| | 1046 | f->lock_owner = NULL; |
| | 1047 | |
| | 1048 | fio_mutex_up(f->lock); |
| | 1049 | } |
| | 1050 | } |
| | 1051 | |
| | 1052 | void unlock_file_all(struct thread_data *td, struct fio_file *f) |
| | 1053 | { |
| | 1054 | if (f->lock_owner != td) |
| | 1055 | return; |
| | 1056 | |
| | 1057 | f->lock_batch = 0; |
| | 1058 | unlock_file(td, f); |
| | 1059 | } |
| | 1060 | |
| | 1061 | static int recurse_dir(struct thread_data *td, const char *dirname) |
| | 1062 | { |
| | 1063 | struct dirent *dir; |
| | 1064 | int ret = 0; |
| | 1065 | DIR *D; |
| | 1066 | |
| | 1067 | D = opendir(dirname); |
| | 1068 | if (!D) { |
| | 1069 | char buf[FIO_VERROR_SIZE]; |
| | 1070 | |
| | 1071 | snprintf(buf, FIO_VERROR_SIZE - 1, "opendir(%s)", dirname); |
| | 1072 | td_verror(td, errno, buf); |
| | 1073 | return 1; |
| | 1074 | } |
| | 1075 | |
| | 1076 | while ((dir = readdir(D)) != NULL) { |
| | 1077 | char full_path[PATH_MAX]; |
| | 1078 | struct stat sb; |
| | 1079 | |
| | 1080 | if (!strcmp(dir->d_name, ".") || !strcmp(dir->d_name, "..")) |
| | 1081 | continue; |
| | 1082 | |
| | 1083 | sprintf(full_path, "%s/%s", dirname, dir->d_name); |
| | 1084 | |
| | 1085 | if (lstat(full_path, &sb) == -1) { |
| | 1086 | if (errno != ENOENT) { |
| | 1087 | td_verror(td, errno, "stat"); |
| | 1088 | return 1; |
| | 1089 | } |
| | 1090 | } |
| | 1091 | |
| | 1092 | if (S_ISREG(sb.st_mode)) { |
| | 1093 | add_file(td, full_path); |
| | 1094 | td->o.nr_files++; |
| | 1095 | continue; |
| | 1096 | } |
| | 1097 | if (!S_ISDIR(sb.st_mode)) |
| | 1098 | continue; |
| | 1099 | |
| | 1100 | ret = recurse_dir(td, full_path); |
| | 1101 | if (ret) |
| | 1102 | break; |
| | 1103 | } |
| | 1104 | |
| | 1105 | closedir(D); |
| | 1106 | return ret; |
| | 1107 | } |
| | 1108 | |
| | 1109 | int add_dir_files(struct thread_data *td, const char *path) |
| | 1110 | { |
| | 1111 | int ret = recurse_dir(td, path); |
| | 1112 | |
| | 1113 | if (!ret) |
| | 1114 | log_info("fio: opendir added %d files\n", td->o.nr_files); |
| | 1115 | |
| | 1116 | return ret; |
| | 1117 | } |
| | 1118 | |
| | 1119 | void dup_files(struct thread_data *td, struct thread_data *org) |
| | 1120 | { |
| | 1121 | struct fio_file *f; |
| | 1122 | unsigned int i; |
| | 1123 | |
| | 1124 | dprint(FD_FILE, "dup files: %d\n", org->files_index); |
| | 1125 | |
| | 1126 | if (!org->files) |
| | 1127 | return; |
| | 1128 | |
| | 1129 | td->files = malloc(org->files_index * sizeof(f)); |
| | 1130 | |
| | 1131 | for_each_file(org, f, i) { |
| | 1132 | struct fio_file *__f; |
| | 1133 | |
| | 1134 | __f = smalloc(sizeof(*__f)); |
| | 1135 | if (!__f) { |
| | 1136 | log_err("fio: smalloc OOM\n"); |
| | 1137 | assert(0); |
| | 1138 | } |
| | 1139 | __f->fd = -1; |
| | 1140 | fio_file_reset(__f); |
| | 1141 | |
| | 1142 | if (f->file_name) { |
| | 1143 | __f->file_name = smalloc_strdup(f->file_name); |
| | 1144 | if (!__f->file_name) { |
| | 1145 | log_err("fio: smalloc OOM\n"); |
| | 1146 | assert(0); |
| | 1147 | } |
| | 1148 | |
| | 1149 | __f->filetype = f->filetype; |
| | 1150 | } |
| | 1151 | |
| | 1152 | td->files[i] = __f; |
| | 1153 | } |
| | 1154 | } |
| | 1155 | |
| | 1156 | /* |
| | 1157 | * Returns the index that matches the filename, or -1 if not there |
| | 1158 | */ |
| | 1159 | int get_fileno(struct thread_data *td, const char *fname) |
| | 1160 | { |
| | 1161 | struct fio_file *f; |
| | 1162 | unsigned int i; |
| | 1163 | |
| | 1164 | for_each_file(td, f, i) |
| | 1165 | if (!strcmp(f->file_name, fname)) |
| | 1166 | return i; |
| | 1167 | |
| | 1168 | return -1; |
| | 1169 | } |
| | 1170 | |
| | 1171 | /* |
| | 1172 | * For log usage, where we add/open/close files automatically |
| | 1173 | */ |
| | 1174 | void free_release_files(struct thread_data *td) |
| | 1175 | { |
| | 1176 | close_files(td); |
| | 1177 | td->files_index = 0; |
| | 1178 | td->nr_normal_files = 0; |
| | 1179 | } |
projects / fio.git / blame_incremental