Jens Axboe | 53cdc68 | 2006-10-18 11:50:58 +0200 | [diff] [blame] | 1 | #include <unistd.h> |
| 2 | #include <fcntl.h> |
| 3 | #include <string.h> |
| 4 | #include <assert.h> |
| 5 | #include <sys/stat.h> |
| 6 | #include <sys/mman.h> |
| 7 | |
| 8 | #include "fio.h" |
| 9 | #include "os.h" |
| 10 | |
Jens Axboe | 25205e9 | 2006-10-19 20:50:14 +0200 | [diff] [blame] | 11 | /* |
| 12 | * Check if the file exists and it's large enough. |
| 13 | */ |
| 14 | static int file_ok(struct thread_data *td, struct fio_file *f) |
Jens Axboe | 53cdc68 | 2006-10-18 11:50:58 +0200 | [diff] [blame] | 15 | { |
Jens Axboe | b2a1519 | 2006-10-18 14:10:42 +0200 | [diff] [blame] | 16 | struct stat st; |
Jens Axboe | 53cdc68 | 2006-10-18 11:50:58 +0200 | [diff] [blame] | 17 | |
Jens Axboe | b2a1519 | 2006-10-18 14:10:42 +0200 | [diff] [blame] | 18 | if (td->filetype != FIO_TYPE_FILE) |
| 19 | return 0; |
| 20 | |
Jens Axboe | 25205e9 | 2006-10-19 20:50:14 +0200 | [diff] [blame] | 21 | if (stat(f->file_name, &st) == -1) |
| 22 | return 1; |
| 23 | else if (st.st_size < (off_t) f->file_size) |
| 24 | return 1; |
| 25 | |
| 26 | return 0; |
| 27 | } |
| 28 | |
| 29 | static int create_file(struct thread_data *td, struct fio_file *f) |
| 30 | { |
| 31 | unsigned long long left; |
| 32 | unsigned int bs; |
| 33 | char *b; |
| 34 | int r; |
Jens Axboe | b2a1519 | 2006-10-18 14:10:42 +0200 | [diff] [blame] | 35 | |
Jens Axboe | 53cdc68 | 2006-10-18 11:50:58 +0200 | [diff] [blame] | 36 | f->fd = open(f->file_name, O_WRONLY | O_CREAT | O_TRUNC, 0644); |
| 37 | if (f->fd < 0) { |
| 38 | td_verror(td, errno); |
| 39 | return 1; |
| 40 | } |
| 41 | |
| 42 | if (ftruncate(f->fd, f->file_size) == -1) { |
| 43 | td_verror(td, errno); |
| 44 | goto err; |
| 45 | } |
| 46 | |
Jens Axboe | 40f8298 | 2006-10-25 11:21:05 +0200 | [diff] [blame] | 47 | if (posix_fallocate(f->fd, 0, f->file_size) < 0) { |
| 48 | td_verror(td, errno); |
| 49 | goto err; |
| 50 | } |
| 51 | |
Jens Axboe | 53cdc68 | 2006-10-18 11:50:58 +0200 | [diff] [blame] | 52 | b = malloc(td->max_bs); |
| 53 | memset(b, 0, td->max_bs); |
| 54 | |
| 55 | left = f->file_size; |
| 56 | while (left && !td->terminate) { |
| 57 | bs = td->max_bs; |
| 58 | if (bs > left) |
| 59 | bs = left; |
| 60 | |
| 61 | r = write(f->fd, b, bs); |
| 62 | |
| 63 | if (r == (int) bs) { |
| 64 | left -= bs; |
| 65 | continue; |
| 66 | } else { |
| 67 | if (r < 0) |
| 68 | td_verror(td, errno); |
| 69 | else |
| 70 | td_verror(td, EIO); |
| 71 | |
| 72 | break; |
| 73 | } |
| 74 | } |
| 75 | |
| 76 | if (td->terminate) |
| 77 | unlink(f->file_name); |
| 78 | else if (td->create_fsync) |
| 79 | fsync(f->fd); |
| 80 | |
| 81 | free(b); |
| 82 | close(f->fd); |
| 83 | f->fd = -1; |
| 84 | return 0; |
| 85 | err: |
| 86 | close(f->fd); |
| 87 | f->fd = -1; |
| 88 | return 1; |
| 89 | } |
| 90 | |
| 91 | static int create_files(struct thread_data *td) |
| 92 | { |
| 93 | struct fio_file *f; |
Jens Axboe | 25205e9 | 2006-10-19 20:50:14 +0200 | [diff] [blame] | 94 | int i, err, need_create; |
Jens Axboe | 53cdc68 | 2006-10-18 11:50:58 +0200 | [diff] [blame] | 95 | |
| 96 | /* |
| 97 | * unless specifically asked for overwrite, let normal io extend it |
| 98 | */ |
| 99 | if (!td->overwrite) { |
Jens Axboe | 53cdc68 | 2006-10-18 11:50:58 +0200 | [diff] [blame] | 100 | for_each_file(td, f, i) |
| 101 | f->file_size = td->total_file_size / td->nr_files; |
| 102 | |
| 103 | return 0; |
| 104 | } |
| 105 | |
Jens Axboe | f102706 | 2006-10-20 10:14:01 +0200 | [diff] [blame] | 106 | need_create = 0; |
Jens Axboe | 0a7eb12 | 2006-10-20 10:36:42 +0200 | [diff] [blame] | 107 | if (td->filetype == FIO_TYPE_FILE) |
| 108 | for_each_file(td, f, i) |
Jens Axboe | f102706 | 2006-10-20 10:14:01 +0200 | [diff] [blame] | 109 | need_create += file_ok(td, f); |
Jens Axboe | f102706 | 2006-10-20 10:14:01 +0200 | [diff] [blame] | 110 | |
| 111 | if (!need_create) |
| 112 | return 0; |
| 113 | |
Jens Axboe | 53cdc68 | 2006-10-18 11:50:58 +0200 | [diff] [blame] | 114 | if (!td->total_file_size) { |
| 115 | log_err("Need size for create\n"); |
| 116 | td_verror(td, EINVAL); |
| 117 | return 1; |
| 118 | } |
| 119 | |
Jens Axboe | 25205e9 | 2006-10-19 20:50:14 +0200 | [diff] [blame] | 120 | temp_stall_ts = 1; |
| 121 | fprintf(f_out, "%s: Laying out IO file(s) (%d x %LuMiB == %LuMiB)\n", |
Jens Axboe | 13f8e2d | 2006-10-24 09:29:45 +0200 | [diff] [blame] | 122 | td->name, td->nr_uniq_files, |
| 123 | (td->total_file_size >> 20) / td->nr_uniq_files, |
Jens Axboe | 25205e9 | 2006-10-19 20:50:14 +0200 | [diff] [blame] | 124 | td->total_file_size >> 20); |
| 125 | |
| 126 | err = 0; |
| 127 | for_each_file(td, f, i) { |
| 128 | if (file_ok(td, f)) { |
| 129 | err = create_file(td, f); |
| 130 | if (err) |
| 131 | break; |
| 132 | } |
| 133 | } |
| 134 | |
Jens Axboe | 53cdc68 | 2006-10-18 11:50:58 +0200 | [diff] [blame] | 135 | temp_stall_ts = 0; |
| 136 | return err; |
| 137 | } |
| 138 | |
| 139 | static int file_size(struct thread_data *td, struct fio_file *f) |
| 140 | { |
| 141 | struct stat st; |
| 142 | |
| 143 | if (td->overwrite) { |
| 144 | if (fstat(f->fd, &st) == -1) { |
| 145 | td_verror(td, errno); |
| 146 | return 1; |
| 147 | } |
| 148 | |
| 149 | f->real_file_size = st.st_size; |
| 150 | |
| 151 | if (!f->file_size || f->file_size > f->real_file_size) |
| 152 | f->file_size = f->real_file_size; |
| 153 | } |
| 154 | |
| 155 | f->file_size -= f->file_offset; |
| 156 | return 0; |
| 157 | } |
| 158 | |
| 159 | static int bdev_size(struct thread_data *td, struct fio_file *f) |
| 160 | { |
| 161 | unsigned long long bytes; |
| 162 | int r; |
| 163 | |
| 164 | r = blockdev_size(f->fd, &bytes); |
| 165 | if (r) { |
| 166 | td_verror(td, r); |
| 167 | return 1; |
| 168 | } |
| 169 | |
| 170 | f->real_file_size = bytes; |
| 171 | |
| 172 | /* |
| 173 | * no extend possibilities, so limit size to device size if too large |
| 174 | */ |
| 175 | if (!f->file_size || f->file_size > f->real_file_size) |
| 176 | f->file_size = f->real_file_size; |
| 177 | |
| 178 | f->file_size -= f->file_offset; |
| 179 | return 0; |
| 180 | } |
| 181 | |
| 182 | static int get_file_size(struct thread_data *td, struct fio_file *f) |
| 183 | { |
| 184 | int ret = 0; |
| 185 | |
| 186 | if (td->filetype == FIO_TYPE_FILE) |
| 187 | ret = file_size(td, f); |
| 188 | else if (td->filetype == FIO_TYPE_BD) |
| 189 | ret = bdev_size(td, f); |
| 190 | else |
| 191 | f->real_file_size = -1; |
| 192 | |
| 193 | if (ret) |
| 194 | return ret; |
| 195 | |
| 196 | if (f->file_offset > f->real_file_size) { |
| 197 | log_err("%s: offset extends end (%Lu > %Lu)\n", td->name, f->file_offset, f->real_file_size); |
| 198 | return 1; |
| 199 | } |
| 200 | |
Jens Axboe | 53cdc68 | 2006-10-18 11:50:58 +0200 | [diff] [blame] | 201 | return 0; |
| 202 | } |
| 203 | |
Jens Axboe | e5b401d | 2006-10-18 16:03:40 +0200 | [diff] [blame] | 204 | int file_invalidate_cache(struct thread_data *td, struct fio_file *f) |
| 205 | { |
| 206 | int ret = 0; |
| 207 | |
| 208 | /* |
| 209 | * FIXME: add blockdev flushing too |
| 210 | */ |
| 211 | if (td->io_ops->flags & FIO_MMAPIO) |
| 212 | ret = madvise(f->mmap, f->file_size, MADV_DONTNEED); |
| 213 | else if (td->filetype == FIO_TYPE_FILE) |
| 214 | ret = fadvise(f->fd, f->file_offset, f->file_size, POSIX_FADV_DONTNEED); |
| 215 | else if (td->filetype == FIO_TYPE_BD) |
| 216 | ret = blockdev_invalidate_cache(f->fd); |
| 217 | else if (td->filetype == FIO_TYPE_CHAR) |
| 218 | ret = 0; |
| 219 | |
| 220 | if (ret < 0) { |
| 221 | td_verror(td, errno); |
| 222 | return 1; |
| 223 | } |
| 224 | |
| 225 | return 0; |
| 226 | } |
| 227 | |
Jens Axboe | 53cdc68 | 2006-10-18 11:50:58 +0200 | [diff] [blame] | 228 | static int __setup_file_mmap(struct thread_data *td, struct fio_file *f) |
| 229 | { |
| 230 | int flags; |
| 231 | |
| 232 | if (td_rw(td)) |
| 233 | flags = PROT_READ | PROT_WRITE; |
| 234 | else if (td_write(td)) { |
| 235 | flags = PROT_WRITE; |
| 236 | |
| 237 | if (td->verify != VERIFY_NONE) |
| 238 | flags |= PROT_READ; |
| 239 | } else |
| 240 | flags = PROT_READ; |
| 241 | |
| 242 | f->mmap = mmap(NULL, f->file_size, flags, MAP_SHARED, f->fd, f->file_offset); |
| 243 | if (f->mmap == MAP_FAILED) { |
| 244 | f->mmap = NULL; |
| 245 | td_verror(td, errno); |
| 246 | return 1; |
| 247 | } |
| 248 | |
Jens Axboe | e5b401d | 2006-10-18 16:03:40 +0200 | [diff] [blame] | 249 | if (td->invalidate_cache && file_invalidate_cache(td, f)) |
| 250 | return 1; |
Jens Axboe | 53cdc68 | 2006-10-18 11:50:58 +0200 | [diff] [blame] | 251 | |
| 252 | if (td->sequential) { |
| 253 | if (madvise(f->mmap, f->file_size, MADV_SEQUENTIAL) < 0) { |
| 254 | td_verror(td, errno); |
| 255 | return 1; |
| 256 | } |
| 257 | } else { |
| 258 | if (madvise(f->mmap, f->file_size, MADV_RANDOM) < 0) { |
| 259 | td_verror(td, errno); |
| 260 | return 1; |
| 261 | } |
| 262 | } |
| 263 | |
| 264 | return 0; |
| 265 | } |
| 266 | |
| 267 | static int setup_files_mmap(struct thread_data *td) |
| 268 | { |
| 269 | struct fio_file *f; |
| 270 | int i, err = 0; |
| 271 | |
| 272 | for_each_file(td, f, i) { |
| 273 | err = __setup_file_mmap(td, f); |
| 274 | if (err) |
| 275 | break; |
| 276 | } |
| 277 | |
| 278 | return err; |
| 279 | } |
| 280 | |
| 281 | static int __setup_file_plain(struct thread_data *td, struct fio_file *f) |
| 282 | { |
Jens Axboe | e5b401d | 2006-10-18 16:03:40 +0200 | [diff] [blame] | 283 | if (td->invalidate_cache && file_invalidate_cache(td, f)) |
| 284 | return 1; |
Jens Axboe | 53cdc68 | 2006-10-18 11:50:58 +0200 | [diff] [blame] | 285 | |
| 286 | if (td->sequential) { |
| 287 | if (fadvise(f->fd, f->file_offset, f->file_size, POSIX_FADV_SEQUENTIAL) < 0) { |
| 288 | td_verror(td, errno); |
| 289 | return 1; |
| 290 | } |
| 291 | } else { |
| 292 | if (fadvise(f->fd, f->file_offset, f->file_size, POSIX_FADV_RANDOM) < 0) { |
| 293 | td_verror(td, errno); |
| 294 | return 1; |
| 295 | } |
| 296 | } |
| 297 | |
| 298 | return 0; |
| 299 | } |
| 300 | |
| 301 | static int setup_files_plain(struct thread_data *td) |
| 302 | { |
| 303 | struct fio_file *f; |
| 304 | int i, err = 0; |
| 305 | |
| 306 | for_each_file(td, f, i) { |
| 307 | err = __setup_file_plain(td, f); |
| 308 | if (err) |
| 309 | break; |
| 310 | } |
| 311 | |
| 312 | return err; |
| 313 | } |
| 314 | |
| 315 | static int setup_file(struct thread_data *td, struct fio_file *f) |
| 316 | { |
Jens Axboe | 53cdc68 | 2006-10-18 11:50:58 +0200 | [diff] [blame] | 317 | int flags = 0; |
| 318 | |
Jens Axboe | 53cdc68 | 2006-10-18 11:50:58 +0200 | [diff] [blame] | 319 | if (td->odirect) |
| 320 | flags |= OS_O_DIRECT; |
| 321 | |
| 322 | if (td_write(td) || td_rw(td)) { |
| 323 | if (td->filetype == FIO_TYPE_FILE) { |
| 324 | if (!td->overwrite) |
| 325 | flags |= O_TRUNC; |
| 326 | |
| 327 | flags |= O_CREAT; |
| 328 | } |
| 329 | if (td->sync_io) |
| 330 | flags |= O_SYNC; |
| 331 | |
| 332 | flags |= O_RDWR; |
| 333 | |
| 334 | f->fd = open(f->file_name, flags, 0600); |
| 335 | } else { |
| 336 | if (td->filetype == FIO_TYPE_CHAR) |
| 337 | flags |= O_RDWR; |
| 338 | else |
| 339 | flags |= O_RDONLY; |
| 340 | |
| 341 | f->fd = open(f->file_name, flags); |
| 342 | } |
| 343 | |
| 344 | if (f->fd == -1) { |
| 345 | td_verror(td, errno); |
| 346 | return 1; |
| 347 | } |
| 348 | |
| 349 | if (get_file_size(td, f)) |
| 350 | return 1; |
| 351 | |
| 352 | return 0; |
| 353 | } |
| 354 | |
| 355 | int setup_files(struct thread_data *td) |
| 356 | { |
| 357 | struct fio_file *f; |
| 358 | int i, err; |
| 359 | |
| 360 | /* |
| 361 | * if ioengine defines a setup() method, it's responsible for |
| 362 | * setting up everything in the td->files[] area. |
| 363 | */ |
| 364 | if (td->io_ops->setup) |
| 365 | return td->io_ops->setup(td); |
| 366 | |
| 367 | if (create_files(td)) |
| 368 | return 1; |
| 369 | |
Jens Axboe | f102706 | 2006-10-20 10:14:01 +0200 | [diff] [blame] | 370 | err = 0; |
Jens Axboe | 53cdc68 | 2006-10-18 11:50:58 +0200 | [diff] [blame] | 371 | for_each_file(td, f, i) { |
| 372 | err = setup_file(td, f); |
| 373 | if (err) |
| 374 | break; |
| 375 | } |
| 376 | |
Jens Axboe | f102706 | 2006-10-20 10:14:01 +0200 | [diff] [blame] | 377 | if (err) |
| 378 | return err; |
| 379 | |
Jens Axboe | 0a7eb12 | 2006-10-20 10:36:42 +0200 | [diff] [blame] | 380 | /* |
| 381 | * Recalculate the total file size now that files are set up. |
| 382 | */ |
| 383 | td->total_file_size = 0; |
| 384 | for_each_file(td, f, i) |
| 385 | td->total_file_size += f->file_size; |
| 386 | |
Jens Axboe | f102706 | 2006-10-20 10:14:01 +0200 | [diff] [blame] | 387 | td->io_size = td->total_file_size; |
Jens Axboe | 53cdc68 | 2006-10-18 11:50:58 +0200 | [diff] [blame] | 388 | if (td->io_size == 0) { |
| 389 | log_err("%s: no io blocks\n", td->name); |
| 390 | td_verror(td, EINVAL); |
| 391 | return 1; |
| 392 | } |
| 393 | |
| 394 | if (!td->zone_size) |
| 395 | td->zone_size = td->io_size; |
| 396 | |
| 397 | td->total_io_size = td->io_size * td->loops; |
| 398 | |
| 399 | if (td->io_ops->flags & FIO_MMAPIO) |
| 400 | return setup_files_mmap(td); |
| 401 | else |
| 402 | return setup_files_plain(td); |
| 403 | } |
| 404 | |
| 405 | void close_files(struct thread_data *td) |
| 406 | { |
Jens Axboe | 0ab8db8 | 2006-10-18 17:16:23 +0200 | [diff] [blame] | 407 | struct fio_file *f; |
Jens Axboe | 53cdc68 | 2006-10-18 11:50:58 +0200 | [diff] [blame] | 408 | int i; |
| 409 | |
Jens Axboe | 0ab8db8 | 2006-10-18 17:16:23 +0200 | [diff] [blame] | 410 | for_each_file(td, f, i) { |
Jens Axboe | 53cdc68 | 2006-10-18 11:50:58 +0200 | [diff] [blame] | 411 | if (f->fd != -1) { |
Jens Axboe | c21ac0f | 2006-10-24 10:27:38 +0200 | [diff] [blame] | 412 | if (td->unlink && td->filetype == FIO_TYPE_FILE && |
| 413 | td->filename) { |
Jens Axboe | f6cbb26 | 2006-10-18 14:16:42 +0200 | [diff] [blame] | 414 | unlink(f->file_name); |
Jens Axboe | c21ac0f | 2006-10-24 10:27:38 +0200 | [diff] [blame] | 415 | td->filename = NULL; |
| 416 | } |
Jens Axboe | b4a6a59 | 2006-10-20 13:54:47 +0200 | [diff] [blame] | 417 | free(f->file_name); |
| 418 | f->file_name = NULL; |
Jens Axboe | 53cdc68 | 2006-10-18 11:50:58 +0200 | [diff] [blame] | 419 | close(f->fd); |
| 420 | f->fd = -1; |
| 421 | } |
| 422 | if (f->mmap) { |
| 423 | munmap(f->mmap, f->file_size); |
| 424 | f->mmap = NULL; |
| 425 | } |
| 426 | } |
Jens Axboe | b4a6a59 | 2006-10-20 13:54:47 +0200 | [diff] [blame] | 427 | |
| 428 | free(td->files); |
| 429 | td->files = NULL; |
| 430 | td->nr_files = 0; |
Jens Axboe | 53cdc68 | 2006-10-18 11:50:58 +0200 | [diff] [blame] | 431 | } |