Commit | Line | Data |
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53cdc686 JA |
1 | #include <unistd.h> |
2 | #include <fcntl.h> | |
3 | #include <string.h> | |
4 | #include <assert.h> | |
bbf6b540 | 5 | #include <dirent.h> |
53cdc686 JA |
6 | #include <sys/stat.h> |
7 | #include <sys/mman.h> | |
bbf6b540 | 8 | #include <sys/types.h> |
53cdc686 JA |
9 | |
10 | #include "fio.h" | |
11 | #include "os.h" | |
12 | ||
25205e97 JA |
13 | /* |
14 | * Check if the file exists and it's large enough. | |
15 | */ | |
16 | static int file_ok(struct thread_data *td, struct fio_file *f) | |
53cdc686 | 17 | { |
b2a15192 | 18 | struct stat st; |
53cdc686 | 19 | |
af52b345 | 20 | if (f->filetype != FIO_TYPE_FILE || |
b5af8293 | 21 | (td->io_ops->flags & FIO_DISKLESSIO)) |
b2a15192 JA |
22 | return 0; |
23 | ||
fa01d139 | 24 | if (lstat(f->file_name, &st) == -1) |
25205e97 | 25 | return 1; |
fa01d139 JA |
26 | |
27 | /* | |
28 | * if it's a special file, size is always ok for now | |
29 | */ | |
30 | if (S_ISCHR(st.st_mode) || S_ISBLK(st.st_mode)) | |
31 | return 0; | |
32 | if (st.st_size < (off_t) f->file_size) | |
25205e97 JA |
33 | return 1; |
34 | ||
35 | return 0; | |
36 | } | |
37 | ||
38 | static int create_file(struct thread_data *td, struct fio_file *f) | |
39 | { | |
40 | unsigned long long left; | |
41 | unsigned int bs; | |
42 | char *b; | |
43 | int r; | |
b2a15192 | 44 | |
53cdc686 JA |
45 | f->fd = open(f->file_name, O_WRONLY | O_CREAT | O_TRUNC, 0644); |
46 | if (f->fd < 0) { | |
e1161c32 | 47 | td_verror(td, errno, "open"); |
53cdc686 JA |
48 | return 1; |
49 | } | |
50 | ||
51 | if (ftruncate(f->fd, f->file_size) == -1) { | |
e1161c32 | 52 | td_verror(td, errno, "ftruncate"); |
53cdc686 JA |
53 | goto err; |
54 | } | |
55 | ||
40f8298c | 56 | if (posix_fallocate(f->fd, 0, f->file_size) < 0) { |
e1161c32 | 57 | td_verror(td, errno, "posix_fallocate"); |
40f8298c JA |
58 | goto err; |
59 | } | |
60 | ||
a00735e6 JA |
61 | b = malloc(td->max_bs[DDIR_WRITE]); |
62 | memset(b, 0, td->max_bs[DDIR_WRITE]); | |
53cdc686 JA |
63 | |
64 | left = f->file_size; | |
65 | while (left && !td->terminate) { | |
a00735e6 | 66 | bs = td->max_bs[DDIR_WRITE]; |
53cdc686 JA |
67 | if (bs > left) |
68 | bs = left; | |
69 | ||
70 | r = write(f->fd, b, bs); | |
71 | ||
72 | if (r == (int) bs) { | |
73 | left -= bs; | |
74 | continue; | |
75 | } else { | |
76 | if (r < 0) | |
e1161c32 | 77 | td_verror(td, errno, "write"); |
53cdc686 | 78 | else |
e1161c32 | 79 | td_verror(td, EIO, "write"); |
53cdc686 JA |
80 | |
81 | break; | |
82 | } | |
83 | } | |
84 | ||
85 | if (td->terminate) | |
86 | unlink(f->file_name); | |
87 | else if (td->create_fsync) | |
88 | fsync(f->fd); | |
89 | ||
90 | free(b); | |
91 | close(f->fd); | |
92 | f->fd = -1; | |
93 | return 0; | |
94 | err: | |
95 | close(f->fd); | |
96 | f->fd = -1; | |
97 | return 1; | |
98 | } | |
99 | ||
9c60ce64 JA |
100 | static unsigned long long set_rand_file_size(struct thread_data *td, |
101 | unsigned long long total_size) | |
102 | { | |
103 | unsigned long long upper = total_size; | |
104 | unsigned long long ret; | |
105 | long r; | |
106 | ||
107 | if (upper > td->file_size_high) | |
108 | upper = td->file_size_high; | |
109 | else if (upper < td->file_size_low) | |
110 | return 0; | |
111 | else if (!upper) | |
112 | return 0; | |
113 | ||
114 | r = os_random_long(&td->file_size_state); | |
115 | ret = td->file_size_low + (unsigned long long) ((double) upper * (r / (RAND_MAX + 1.0))); | |
116 | ret -= (ret % td->rw_min_bs); | |
117 | if (ret > upper) | |
118 | ret = upper; | |
119 | return ret; | |
120 | } | |
121 | ||
53cdc686 JA |
122 | static int create_files(struct thread_data *td) |
123 | { | |
124 | struct fio_file *f; | |
af52b345 | 125 | int err, need_create, can_extend; |
e8be395b | 126 | unsigned long long total_file_size, local_file_size, create_size; |
e407bec2 | 127 | unsigned int i, new_files; |
53cdc686 | 128 | |
e407bec2 | 129 | new_files = 0; |
96d32d51 | 130 | total_file_size = td->total_file_size; |
1549441c | 131 | for_each_file(td, f, i) { |
96d32d51 JA |
132 | unsigned long long s; |
133 | ||
134 | f->file_offset = td->start_offset; | |
135 | ||
1549441c JA |
136 | if (f->filetype != FIO_TYPE_FILE) |
137 | continue; | |
138 | ||
96d32d51 JA |
139 | if (f->flags & FIO_FILE_EXISTS) { |
140 | s = f->file_size; | |
141 | if (s > total_file_size) | |
142 | s = total_file_size; | |
143 | ||
144 | total_file_size -= s; | |
e407bec2 JA |
145 | } else |
146 | new_files++; | |
1549441c | 147 | } |
f697125a | 148 | |
53cdc686 JA |
149 | /* |
150 | * unless specifically asked for overwrite, let normal io extend it | |
151 | */ | |
0263882a JA |
152 | can_extend = !td->overwrite && !(td->io_ops->flags & FIO_NOEXTEND); |
153 | if (can_extend) | |
53cdc686 | 154 | return 0; |
53cdc686 | 155 | |
9c60ce64 JA |
156 | local_file_size = total_file_size; |
157 | if (!local_file_size) | |
158 | local_file_size = -1; | |
159 | ||
f4c4f4d7 JA |
160 | total_file_size = 0; |
161 | need_create = 0; | |
e8be395b | 162 | create_size = 0; |
af52b345 JA |
163 | for_each_file(td, f, i) { |
164 | int file_there; | |
165 | ||
166 | if (f->filetype != FIO_TYPE_FILE) | |
167 | continue; | |
f4c4f4d7 JA |
168 | if (f->flags & FIO_FILE_EXISTS) { |
169 | total_file_size += f->file_size; | |
96d32d51 | 170 | continue; |
f4c4f4d7 | 171 | } |
96d32d51 | 172 | |
9c60ce64 JA |
173 | if (!td->file_size_low) |
174 | f->file_size = total_file_size / new_files; | |
175 | else { | |
176 | /* | |
177 | * If we don't have enough space left for a file | |
178 | * of the minimum size, bail. | |
179 | */ | |
180 | if (local_file_size < td->file_size_low) { | |
181 | log_info("fio: limited to %d files\n", i); | |
182 | new_files -= (td->nr_files - i); | |
183 | td->nr_files = i; | |
184 | break; | |
185 | } | |
186 | ||
187 | f->file_size = set_rand_file_size(td, local_file_size); | |
188 | local_file_size -= f->file_size; | |
189 | } | |
eff6861d | 190 | |
f4c4f4d7 | 191 | total_file_size += f->file_size; |
e8be395b | 192 | create_size += f->file_size; |
af52b345 | 193 | file_there = !file_ok(td, f); |
eff6861d | 194 | |
af52b345 JA |
195 | if (file_there && td_write(td) && !td->overwrite) { |
196 | unlink(f->file_name); | |
197 | file_there = 0; | |
eff6861d | 198 | } |
af52b345 JA |
199 | |
200 | need_create += !file_there; | |
eff6861d | 201 | } |
25205e97 | 202 | |
25205e97 JA |
203 | if (!need_create) |
204 | return 0; | |
205 | ||
e8be395b | 206 | if (!td->total_file_size && !total_file_size) { |
f1027063 | 207 | log_err("Need size for create\n"); |
e1161c32 | 208 | td_verror(td, EINVAL, "file_size"); |
f1027063 JA |
209 | return 1; |
210 | } | |
211 | ||
53cdc686 | 212 | temp_stall_ts = 1; |
6d86144d | 213 | log_info("%s: Laying out IO file(s) (%u files / %LuMiB)\n", |
e8be395b | 214 | td->name, new_files, create_size >> 20); |
53cdc686 JA |
215 | |
216 | err = 0; | |
217 | for_each_file(td, f, i) { | |
9b031dc8 JA |
218 | /* |
219 | * Only unlink files that we created. | |
220 | */ | |
f11bd94d | 221 | f->flags &= ~FIO_FILE_UNLINK; |
25205e97 | 222 | if (file_ok(td, f)) { |
f11bd94d JA |
223 | if (td->unlink) |
224 | f->flags |= FIO_FILE_UNLINK; | |
225 | ||
25205e97 JA |
226 | err = create_file(td, f); |
227 | if (err) | |
228 | break; | |
229 | } | |
53cdc686 JA |
230 | } |
231 | ||
232 | temp_stall_ts = 0; | |
233 | return err; | |
234 | } | |
235 | ||
236 | static int file_size(struct thread_data *td, struct fio_file *f) | |
237 | { | |
238 | struct stat st; | |
239 | ||
240 | if (td->overwrite) { | |
241 | if (fstat(f->fd, &st) == -1) { | |
e1161c32 | 242 | td_verror(td, errno, "fstat"); |
53cdc686 JA |
243 | return 1; |
244 | } | |
245 | ||
246 | f->real_file_size = st.st_size; | |
247 | ||
248 | if (!f->file_size || f->file_size > f->real_file_size) | |
249 | f->file_size = f->real_file_size; | |
745508dd JA |
250 | } else |
251 | f->real_file_size = f->file_size; | |
53cdc686 | 252 | |
53cdc686 JA |
253 | return 0; |
254 | } | |
255 | ||
256 | static int bdev_size(struct thread_data *td, struct fio_file *f) | |
257 | { | |
258 | unsigned long long bytes; | |
259 | int r; | |
260 | ||
261 | r = blockdev_size(f->fd, &bytes); | |
262 | if (r) { | |
e1161c32 | 263 | td_verror(td, r, "blockdev_size"); |
53cdc686 JA |
264 | return 1; |
265 | } | |
266 | ||
267 | f->real_file_size = bytes; | |
268 | ||
269 | /* | |
270 | * no extend possibilities, so limit size to device size if too large | |
271 | */ | |
272 | if (!f->file_size || f->file_size > f->real_file_size) | |
273 | f->file_size = f->real_file_size; | |
274 | ||
275 | f->file_size -= f->file_offset; | |
276 | return 0; | |
277 | } | |
278 | ||
279 | static int get_file_size(struct thread_data *td, struct fio_file *f) | |
280 | { | |
281 | int ret = 0; | |
282 | ||
96d32d51 JA |
283 | if (f->filetype == FIO_TYPE_FILE) { |
284 | if (!(f->flags & FIO_FILE_EXISTS)) | |
285 | ret = file_size(td, f); | |
286 | } else if (f->filetype == FIO_TYPE_BD) | |
53cdc686 JA |
287 | ret = bdev_size(td, f); |
288 | else | |
289 | f->real_file_size = -1; | |
290 | ||
291 | if (ret) | |
292 | return ret; | |
293 | ||
294 | if (f->file_offset > f->real_file_size) { | |
295 | log_err("%s: offset extends end (%Lu > %Lu)\n", td->name, f->file_offset, f->real_file_size); | |
296 | return 1; | |
297 | } | |
298 | ||
53cdc686 JA |
299 | return 0; |
300 | } | |
301 | ||
e5b401d4 JA |
302 | int file_invalidate_cache(struct thread_data *td, struct fio_file *f) |
303 | { | |
304 | int ret = 0; | |
305 | ||
da86ccb6 | 306 | if (td->odirect) |
b5af8293 JA |
307 | return 0; |
308 | ||
e5b401d4 JA |
309 | /* |
310 | * FIXME: add blockdev flushing too | |
311 | */ | |
b5af8293 | 312 | if (f->mmap) |
e5b401d4 | 313 | ret = madvise(f->mmap, f->file_size, MADV_DONTNEED); |
467d1b6b | 314 | else if (f->filetype == FIO_TYPE_FILE) |
b5af8293 | 315 | ret = fadvise(f->fd, f->file_offset, f->file_size, POSIX_FADV_DONTNEED); |
467d1b6b | 316 | else if (f->filetype == FIO_TYPE_BD) |
b5af8293 | 317 | ret = blockdev_invalidate_cache(f->fd); |
467d1b6b | 318 | else if (f->filetype == FIO_TYPE_CHAR) |
e5b401d4 JA |
319 | ret = 0; |
320 | ||
321 | if (ret < 0) { | |
e1161c32 | 322 | td_verror(td, errno, "invalidate_cache"); |
e5b401d4 JA |
323 | return 1; |
324 | } | |
325 | ||
ad2da605 | 326 | return ret; |
e5b401d4 JA |
327 | } |
328 | ||
b5af8293 | 329 | void generic_close_file(struct thread_data fio_unused *td, struct fio_file *f) |
53cdc686 | 330 | { |
b5af8293 JA |
331 | close(f->fd); |
332 | f->fd = -1; | |
53cdc686 JA |
333 | } |
334 | ||
b5af8293 | 335 | int generic_open_file(struct thread_data *td, struct fio_file *f) |
53cdc686 | 336 | { |
53cdc686 JA |
337 | int flags = 0; |
338 | ||
2fd233b7 JA |
339 | if (td->odirect) |
340 | flags |= OS_O_DIRECT; | |
341 | if (td->sync_io) | |
342 | flags |= O_SYNC; | |
53cdc686 | 343 | |
2fd233b7 JA |
344 | if (td_write(td) || td_rw(td)) { |
345 | flags |= O_RDWR; | |
53cdc686 | 346 | |
af52b345 | 347 | if (f->filetype == FIO_TYPE_FILE) |
2fd233b7 | 348 | flags |= O_CREAT; |
2fd233b7 | 349 | |
b5af8293 | 350 | f->fd = open(f->file_name, flags, 0600); |
2fd233b7 | 351 | } else { |
af52b345 | 352 | if (f->filetype == FIO_TYPE_CHAR) |
2fd233b7 JA |
353 | flags |= O_RDWR; |
354 | else | |
355 | flags |= O_RDONLY; | |
356 | ||
b5af8293 | 357 | f->fd = open(f->file_name, flags); |
53cdc686 JA |
358 | } |
359 | ||
360 | if (f->fd == -1) { | |
e1161c32 JA |
361 | int __e = errno; |
362 | ||
363 | td_verror(td, __e, "open"); | |
364 | if (__e == EINVAL && td->odirect) | |
9d80e114 | 365 | log_err("fio: destination does not support O_DIRECT\n"); |
8ab53873 JA |
366 | if (__e == EMFILE) |
367 | log_err("fio: try reducing/setting openfiles (failed at %u of %u)\n", td->nr_open_files, td->nr_files); | |
53cdc686 JA |
368 | return 1; |
369 | } | |
370 | ||
b5af8293 JA |
371 | if (get_file_size(td, f)) |
372 | goto err; | |
373 | ||
0263882a | 374 | if (td->invalidate_cache && file_invalidate_cache(td, f)) |
b5af8293 JA |
375 | goto err; |
376 | ||
377 | if (!td_random(td)) { | |
378 | if (fadvise(f->fd, f->file_offset, f->file_size, POSIX_FADV_SEQUENTIAL) < 0) { | |
379 | td_verror(td, errno, "fadvise"); | |
380 | goto err; | |
381 | } | |
382 | } else { | |
383 | if (fadvise(f->fd, f->file_offset, f->file_size, POSIX_FADV_RANDOM) < 0) { | |
384 | td_verror(td, errno, "fadvise"); | |
385 | goto err; | |
386 | } | |
bdb4e2e9 | 387 | } |
53cdc686 JA |
388 | |
389 | return 0; | |
b5af8293 JA |
390 | err: |
391 | close(f->fd); | |
392 | return 1; | |
393 | } | |
394 | ||
21972cde JA |
395 | int open_files(struct thread_data *td) |
396 | { | |
397 | struct fio_file *f; | |
af52b345 JA |
398 | unsigned int i; |
399 | int err = 0; | |
21972cde JA |
400 | |
401 | for_each_file(td, f, i) { | |
b5af8293 | 402 | err = td_io_open_file(td, f); |
21972cde JA |
403 | if (err) |
404 | break; | |
b5af8293 JA |
405 | |
406 | if (td->open_files == td->nr_open_files) | |
407 | break; | |
21972cde JA |
408 | } |
409 | ||
7abf833d JA |
410 | if (!err) |
411 | return 0; | |
412 | ||
bdb4e2e9 | 413 | for_each_file(td, f, i) |
b5af8293 | 414 | td_io_close_file(td, f); |
7abf833d | 415 | |
21972cde JA |
416 | return err; |
417 | } | |
418 | ||
53cdc686 JA |
419 | int setup_files(struct thread_data *td) |
420 | { | |
421 | struct fio_file *f; | |
af52b345 JA |
422 | unsigned int i; |
423 | int err; | |
53cdc686 JA |
424 | |
425 | /* | |
426 | * if ioengine defines a setup() method, it's responsible for | |
427 | * setting up everything in the td->files[] area. | |
428 | */ | |
429 | if (td->io_ops->setup) | |
430 | return td->io_ops->setup(td); | |
431 | ||
432 | if (create_files(td)) | |
433 | return 1; | |
434 | ||
21972cde | 435 | err = open_files(td); |
f1027063 JA |
436 | if (err) |
437 | return err; | |
438 | ||
0a7eb121 JA |
439 | /* |
440 | * Recalculate the total file size now that files are set up. | |
441 | */ | |
442 | td->total_file_size = 0; | |
443 | for_each_file(td, f, i) | |
444 | td->total_file_size += f->file_size; | |
445 | ||
f1027063 | 446 | td->io_size = td->total_file_size; |
53cdc686 JA |
447 | if (td->io_size == 0) { |
448 | log_err("%s: no io blocks\n", td->name); | |
e1161c32 | 449 | td_verror(td, EINVAL, "total_file_size"); |
53cdc686 JA |
450 | return 1; |
451 | } | |
452 | ||
453 | if (!td->zone_size) | |
454 | td->zone_size = td->io_size; | |
455 | ||
456 | td->total_io_size = td->io_size * td->loops; | |
457 | ||
bdb4e2e9 | 458 | for_each_file(td, f, i) |
b5af8293 | 459 | td_io_close_file(td, f); |
21972cde JA |
460 | |
461 | return err; | |
53cdc686 JA |
462 | } |
463 | ||
464 | void close_files(struct thread_data *td) | |
465 | { | |
0ab8db89 | 466 | struct fio_file *f; |
af52b345 | 467 | unsigned int i; |
53cdc686 | 468 | |
0ab8db89 | 469 | for_each_file(td, f, i) { |
1315a68a | 470 | if (!f->file_name && (f->flags & FIO_FILE_UNLINK) && |
af52b345 | 471 | f->filetype == FIO_TYPE_FILE) { |
132ad46d | 472 | unlink(f->file_name); |
1315a68a | 473 | free(f->file_name); |
132ad46d JA |
474 | f->file_name = NULL; |
475 | } | |
bdb4e2e9 | 476 | |
b5af8293 | 477 | td_io_close_file(td, f); |
b3dc7f07 JA |
478 | |
479 | if (f->file_map) | |
480 | free(f->file_map); | |
53cdc686 | 481 | } |
b4a6a59a | 482 | |
132ad46d | 483 | td->filename = NULL; |
b4a6a59a JA |
484 | td->files = NULL; |
485 | td->nr_files = 0; | |
53cdc686 | 486 | } |
af52b345 | 487 | |
e3bab463 | 488 | static void get_file_type(struct fio_file *f) |
af52b345 JA |
489 | { |
490 | struct stat sb; | |
491 | ||
492 | f->filetype = FIO_TYPE_FILE; | |
493 | ||
e3bab463 | 494 | if (!lstat(f->file_name, &sb)) { |
96d32d51 JA |
495 | f->flags |= FIO_FILE_EXISTS; |
496 | ||
af52b345 JA |
497 | if (S_ISBLK(sb.st_mode)) |
498 | f->filetype = FIO_TYPE_BD; | |
499 | else if (S_ISCHR(sb.st_mode)) | |
500 | f->filetype = FIO_TYPE_CHAR; | |
96d32d51 JA |
501 | else { |
502 | /* | |
503 | * might as well do this here, and save a stat later on | |
504 | */ | |
505 | f->real_file_size = sb.st_size; | |
506 | f->file_size = f->real_file_size; | |
507 | } | |
af52b345 JA |
508 | } |
509 | } | |
510 | ||
511 | void add_file(struct thread_data *td, const char *fname) | |
512 | { | |
7b4e4fe5 | 513 | int cur_files = td->files_index; |
af52b345 JA |
514 | struct fio_file *f; |
515 | ||
516 | td->files = realloc(td->files, (cur_files + 1) * sizeof(*f)); | |
517 | ||
518 | f = &td->files[cur_files]; | |
519 | memset(f, 0, sizeof(*f)); | |
520 | f->fd = -1; | |
cae61953 | 521 | f->file_name = strdup(fname); |
af52b345 | 522 | |
e3bab463 | 523 | get_file_type(f); |
af52b345 | 524 | |
7b4e4fe5 | 525 | td->files_index++; |
1549441c JA |
526 | if (f->filetype == FIO_TYPE_FILE) |
527 | td->nr_normal_files++; | |
af52b345 | 528 | } |
0ad920e7 JA |
529 | |
530 | void get_file(struct fio_file *f) | |
531 | { | |
532 | f->references++; | |
533 | } | |
534 | ||
535 | void put_file(struct thread_data *td, struct fio_file *f) | |
536 | { | |
537 | if (!(f->flags & FIO_FILE_OPEN)) | |
538 | return; | |
539 | ||
540 | assert(f->references); | |
541 | if (--f->references) | |
542 | return; | |
543 | ||
ebb1415f JA |
544 | if (should_fsync(td) && td->fsync_on_close) |
545 | fsync(f->fd); | |
546 | ||
0ad920e7 JA |
547 | if (td->io_ops->close_file) |
548 | td->io_ops->close_file(td, f); | |
549 | td->nr_open_files--; | |
550 | f->flags &= ~FIO_FILE_OPEN; | |
551 | } | |
bbf6b540 JA |
552 | |
553 | static int recurse_dir(struct thread_data *td, const char *dirname) | |
554 | { | |
555 | struct dirent *dir; | |
556 | int ret = 0; | |
557 | DIR *D; | |
558 | ||
559 | D = opendir(dirname); | |
560 | if (!D) { | |
561 | td_verror(td, errno, "opendir"); | |
562 | return 1; | |
563 | } | |
564 | ||
565 | while ((dir = readdir(D)) != NULL) { | |
566 | char full_path[PATH_MAX]; | |
567 | struct stat sb; | |
568 | ||
e85b2b83 JA |
569 | if (!strcmp(dir->d_name, ".") || !strcmp(dir->d_name, "..")) |
570 | continue; | |
96d32d51 | 571 | |
bbf6b540 JA |
572 | sprintf(full_path, "%s/%s", dirname, dir->d_name); |
573 | ||
574 | if (lstat(full_path, &sb) == -1) { | |
575 | if (errno != ENOENT) { | |
576 | td_verror(td, errno, "stat"); | |
577 | return 1; | |
578 | } | |
579 | } | |
580 | ||
581 | if (S_ISREG(sb.st_mode)) { | |
582 | add_file(td, full_path); | |
583 | td->nr_files++; | |
584 | continue; | |
585 | } | |
586 | ||
bbf6b540 JA |
587 | if ((ret = recurse_dir(td, full_path)) != 0) |
588 | break; | |
589 | } | |
590 | ||
591 | closedir(D); | |
592 | return ret; | |
593 | } | |
594 | ||
595 | int add_dir_files(struct thread_data *td, const char *path) | |
596 | { | |
597 | return recurse_dir(td, path); | |
598 | } |