Commit | Line | Data |
---|---|---|
53cdc686 JA |
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 | ||
25205e97 JA |
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) | |
53cdc686 | 15 | { |
b2a15192 | 16 | struct stat st; |
53cdc686 | 17 | |
4d9345ae | 18 | if (td->filetype != FIO_TYPE_FILE || (td->io_ops->flags & FIO_NULLIO)) |
b2a15192 JA |
19 | return 0; |
20 | ||
25205e97 JA |
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; | |
b2a15192 | 35 | |
53cdc686 JA |
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 | ||
40f8298c JA |
47 | if (posix_fallocate(f->fd, 0, f->file_size) < 0) { |
48 | td_verror(td, errno); | |
49 | goto err; | |
50 | } | |
51 | ||
a00735e6 JA |
52 | b = malloc(td->max_bs[DDIR_WRITE]); |
53 | memset(b, 0, td->max_bs[DDIR_WRITE]); | |
53cdc686 JA |
54 | |
55 | left = f->file_size; | |
56 | while (left && !td->terminate) { | |
a00735e6 | 57 | bs = td->max_bs[DDIR_WRITE]; |
53cdc686 JA |
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; | |
25205e97 | 94 | int i, err, need_create; |
53cdc686 | 95 | |
f697125a JA |
96 | for_each_file(td, f, i) |
97 | f->file_size = td->total_file_size / td->nr_files; | |
98 | ||
53cdc686 JA |
99 | /* |
100 | * unless specifically asked for overwrite, let normal io extend it | |
101 | */ | |
f697125a | 102 | if (!td->overwrite) |
53cdc686 | 103 | return 0; |
53cdc686 | 104 | |
25205e97 | 105 | need_create = 0; |
eff6861d JA |
106 | if (td->filetype == FIO_TYPE_FILE) { |
107 | for_each_file(td, f, i) { | |
108 | int file_there = !file_ok(td, f); | |
109 | ||
3404cefc JA |
110 | if (file_there && td->ddir == DDIR_WRITE && |
111 | !td->overwrite) { | |
eff6861d JA |
112 | unlink(f->file_name); |
113 | file_there = 0; | |
114 | } | |
115 | ||
116 | need_create += !file_there; | |
117 | } | |
118 | } | |
25205e97 | 119 | |
25205e97 JA |
120 | if (!need_create) |
121 | return 0; | |
122 | ||
f1027063 JA |
123 | if (!td->total_file_size) { |
124 | log_err("Need size for create\n"); | |
125 | td_verror(td, EINVAL); | |
126 | return 1; | |
127 | } | |
128 | ||
53cdc686 | 129 | temp_stall_ts = 1; |
1e97cce9 | 130 | fprintf(f_out, "%s: Laying out IO file(s) (%u x %LuMiB == %LuMiB)\n", |
13f8e2d2 JA |
131 | td->name, td->nr_uniq_files, |
132 | (td->total_file_size >> 20) / td->nr_uniq_files, | |
25205e97 | 133 | td->total_file_size >> 20); |
53cdc686 JA |
134 | |
135 | err = 0; | |
136 | for_each_file(td, f, i) { | |
9b031dc8 JA |
137 | /* |
138 | * Only unlink files that we created. | |
139 | */ | |
140 | f->unlink = 0; | |
25205e97 | 141 | if (file_ok(td, f)) { |
9b031dc8 | 142 | f->unlink = td->unlink; |
25205e97 JA |
143 | err = create_file(td, f); |
144 | if (err) | |
145 | break; | |
146 | } | |
53cdc686 JA |
147 | } |
148 | ||
149 | temp_stall_ts = 0; | |
150 | return err; | |
151 | } | |
152 | ||
153 | static int file_size(struct thread_data *td, struct fio_file *f) | |
154 | { | |
155 | struct stat st; | |
156 | ||
f4ee22ca JA |
157 | /* |
158 | * if we are not doing real io, just pretend the file is as large | |
159 | * as the size= given. this works fine with nrfiles > 1 as well, | |
160 | * we only really care about it being at least as big as size= | |
161 | */ | |
162 | if (td->io_ops->flags & FIO_NULLIO) { | |
163 | f->real_file_size = f->file_size = td->total_file_size; | |
164 | return 0; | |
165 | } | |
166 | ||
53cdc686 JA |
167 | if (td->overwrite) { |
168 | if (fstat(f->fd, &st) == -1) { | |
169 | td_verror(td, errno); | |
170 | return 1; | |
171 | } | |
172 | ||
173 | f->real_file_size = st.st_size; | |
174 | ||
175 | if (!f->file_size || f->file_size > f->real_file_size) | |
176 | f->file_size = f->real_file_size; | |
745508dd JA |
177 | } else |
178 | f->real_file_size = f->file_size; | |
53cdc686 | 179 | |
53cdc686 JA |
180 | return 0; |
181 | } | |
182 | ||
183 | static int bdev_size(struct thread_data *td, struct fio_file *f) | |
184 | { | |
185 | unsigned long long bytes; | |
186 | int r; | |
187 | ||
188 | r = blockdev_size(f->fd, &bytes); | |
189 | if (r) { | |
190 | td_verror(td, r); | |
191 | return 1; | |
192 | } | |
193 | ||
194 | f->real_file_size = bytes; | |
195 | ||
196 | /* | |
197 | * no extend possibilities, so limit size to device size if too large | |
198 | */ | |
199 | if (!f->file_size || f->file_size > f->real_file_size) | |
200 | f->file_size = f->real_file_size; | |
201 | ||
202 | f->file_size -= f->file_offset; | |
203 | return 0; | |
204 | } | |
205 | ||
206 | static int get_file_size(struct thread_data *td, struct fio_file *f) | |
207 | { | |
208 | int ret = 0; | |
209 | ||
210 | if (td->filetype == FIO_TYPE_FILE) | |
211 | ret = file_size(td, f); | |
212 | else if (td->filetype == FIO_TYPE_BD) | |
213 | ret = bdev_size(td, f); | |
214 | else | |
215 | f->real_file_size = -1; | |
216 | ||
217 | if (ret) | |
218 | return ret; | |
219 | ||
220 | if (f->file_offset > f->real_file_size) { | |
221 | log_err("%s: offset extends end (%Lu > %Lu)\n", td->name, f->file_offset, f->real_file_size); | |
222 | return 1; | |
223 | } | |
224 | ||
53cdc686 JA |
225 | return 0; |
226 | } | |
227 | ||
e5b401d4 JA |
228 | int file_invalidate_cache(struct thread_data *td, struct fio_file *f) |
229 | { | |
230 | int ret = 0; | |
231 | ||
232 | /* | |
233 | * FIXME: add blockdev flushing too | |
234 | */ | |
235 | if (td->io_ops->flags & FIO_MMAPIO) | |
236 | ret = madvise(f->mmap, f->file_size, MADV_DONTNEED); | |
237 | else if (td->filetype == FIO_TYPE_FILE) | |
238 | ret = fadvise(f->fd, f->file_offset, f->file_size, POSIX_FADV_DONTNEED); | |
239 | else if (td->filetype == FIO_TYPE_BD) | |
240 | ret = blockdev_invalidate_cache(f->fd); | |
241 | else if (td->filetype == FIO_TYPE_CHAR) | |
242 | ret = 0; | |
243 | ||
244 | if (ret < 0) { | |
245 | td_verror(td, errno); | |
246 | return 1; | |
247 | } | |
248 | ||
249 | return 0; | |
250 | } | |
251 | ||
53cdc686 JA |
252 | static int __setup_file_mmap(struct thread_data *td, struct fio_file *f) |
253 | { | |
254 | int flags; | |
255 | ||
256 | if (td_rw(td)) | |
257 | flags = PROT_READ | PROT_WRITE; | |
258 | else if (td_write(td)) { | |
259 | flags = PROT_WRITE; | |
260 | ||
261 | if (td->verify != VERIFY_NONE) | |
262 | flags |= PROT_READ; | |
263 | } else | |
264 | flags = PROT_READ; | |
265 | ||
266 | f->mmap = mmap(NULL, f->file_size, flags, MAP_SHARED, f->fd, f->file_offset); | |
267 | if (f->mmap == MAP_FAILED) { | |
268 | f->mmap = NULL; | |
269 | td_verror(td, errno); | |
270 | return 1; | |
271 | } | |
272 | ||
e5b401d4 JA |
273 | if (td->invalidate_cache && file_invalidate_cache(td, f)) |
274 | return 1; | |
53cdc686 JA |
275 | |
276 | if (td->sequential) { | |
277 | if (madvise(f->mmap, f->file_size, MADV_SEQUENTIAL) < 0) { | |
278 | td_verror(td, errno); | |
279 | return 1; | |
280 | } | |
281 | } else { | |
282 | if (madvise(f->mmap, f->file_size, MADV_RANDOM) < 0) { | |
283 | td_verror(td, errno); | |
284 | return 1; | |
285 | } | |
286 | } | |
287 | ||
288 | return 0; | |
289 | } | |
290 | ||
291 | static int setup_files_mmap(struct thread_data *td) | |
292 | { | |
293 | struct fio_file *f; | |
294 | int i, err = 0; | |
295 | ||
296 | for_each_file(td, f, i) { | |
297 | err = __setup_file_mmap(td, f); | |
298 | if (err) | |
299 | break; | |
300 | } | |
301 | ||
302 | return err; | |
303 | } | |
304 | ||
305 | static int __setup_file_plain(struct thread_data *td, struct fio_file *f) | |
306 | { | |
e5b401d4 JA |
307 | if (td->invalidate_cache && file_invalidate_cache(td, f)) |
308 | return 1; | |
53cdc686 JA |
309 | |
310 | if (td->sequential) { | |
311 | if (fadvise(f->fd, f->file_offset, f->file_size, POSIX_FADV_SEQUENTIAL) < 0) { | |
312 | td_verror(td, errno); | |
313 | return 1; | |
314 | } | |
315 | } else { | |
316 | if (fadvise(f->fd, f->file_offset, f->file_size, POSIX_FADV_RANDOM) < 0) { | |
317 | td_verror(td, errno); | |
318 | return 1; | |
319 | } | |
320 | } | |
321 | ||
322 | return 0; | |
323 | } | |
324 | ||
325 | static int setup_files_plain(struct thread_data *td) | |
326 | { | |
327 | struct fio_file *f; | |
328 | int i, err = 0; | |
329 | ||
330 | for_each_file(td, f, i) { | |
331 | err = __setup_file_plain(td, f); | |
332 | if (err) | |
333 | break; | |
334 | } | |
335 | ||
336 | return err; | |
337 | } | |
338 | ||
339 | static int setup_file(struct thread_data *td, struct fio_file *f) | |
340 | { | |
53cdc686 JA |
341 | int flags = 0; |
342 | ||
ed92ac0c JA |
343 | if (td->io_ops->flags & FIO_NETIO) |
344 | return 0; | |
53cdc686 | 345 | |
4d9345ae JA |
346 | /* |
347 | * we need a valid file descriptor, but don't create a real file. | |
348 | * lets just dup stdout, seems like a sensible approach. | |
349 | */ | |
350 | if (td->io_ops->flags & FIO_NULLIO) | |
351 | f->fd = dup(STDOUT_FILENO); | |
352 | else { | |
353 | if (td->odirect) | |
354 | flags |= OS_O_DIRECT; | |
355 | if (td->sync_io) | |
356 | flags |= O_SYNC; | |
357 | ||
358 | if (td_write(td) || td_rw(td)) { | |
359 | flags |= O_RDWR; | |
7abf833d | 360 | |
4d9345ae JA |
361 | if (td->filetype == FIO_TYPE_FILE) { |
362 | if (!td->overwrite) | |
363 | flags |= O_TRUNC; | |
53cdc686 | 364 | |
4d9345ae JA |
365 | flags |= O_CREAT; |
366 | } | |
53cdc686 | 367 | |
4d9345ae JA |
368 | f->fd = open(f->file_name, flags, 0600); |
369 | } else { | |
370 | if (td->filetype == FIO_TYPE_CHAR) | |
371 | flags |= O_RDWR; | |
372 | else | |
373 | flags |= O_RDONLY; | |
53cdc686 | 374 | |
4d9345ae JA |
375 | f->fd = open(f->file_name, flags); |
376 | } | |
53cdc686 JA |
377 | } |
378 | ||
379 | if (f->fd == -1) { | |
380 | td_verror(td, errno); | |
381 | return 1; | |
382 | } | |
383 | ||
384 | if (get_file_size(td, f)) | |
385 | return 1; | |
386 | ||
387 | return 0; | |
388 | } | |
389 | ||
21972cde JA |
390 | int open_files(struct thread_data *td) |
391 | { | |
392 | struct fio_file *f; | |
393 | int i, err = 0; | |
394 | ||
395 | for_each_file(td, f, i) { | |
396 | err = setup_file(td, f); | |
397 | if (err) | |
398 | break; | |
399 | } | |
400 | ||
7abf833d JA |
401 | if (!err) |
402 | return 0; | |
403 | ||
404 | for_each_file(td, f, i) { | |
405 | if (f->fd != -1) { | |
406 | close(f->fd); | |
407 | f->fd = -1; | |
408 | } | |
409 | } | |
410 | ||
21972cde JA |
411 | return err; |
412 | } | |
413 | ||
53cdc686 JA |
414 | int setup_files(struct thread_data *td) |
415 | { | |
416 | struct fio_file *f; | |
21972cde | 417 | int err, i; |
53cdc686 JA |
418 | |
419 | /* | |
420 | * if ioengine defines a setup() method, it's responsible for | |
421 | * setting up everything in the td->files[] area. | |
422 | */ | |
423 | if (td->io_ops->setup) | |
424 | return td->io_ops->setup(td); | |
425 | ||
426 | if (create_files(td)) | |
427 | return 1; | |
428 | ||
21972cde | 429 | err = open_files(td); |
f1027063 JA |
430 | if (err) |
431 | return err; | |
432 | ||
0a7eb121 JA |
433 | /* |
434 | * Recalculate the total file size now that files are set up. | |
435 | */ | |
436 | td->total_file_size = 0; | |
437 | for_each_file(td, f, i) | |
438 | td->total_file_size += f->file_size; | |
439 | ||
f1027063 | 440 | td->io_size = td->total_file_size; |
53cdc686 JA |
441 | if (td->io_size == 0) { |
442 | log_err("%s: no io blocks\n", td->name); | |
443 | td_verror(td, EINVAL); | |
444 | return 1; | |
445 | } | |
446 | ||
447 | if (!td->zone_size) | |
448 | td->zone_size = td->io_size; | |
449 | ||
450 | td->total_io_size = td->io_size * td->loops; | |
451 | ||
452 | if (td->io_ops->flags & FIO_MMAPIO) | |
21972cde | 453 | err = setup_files_mmap(td); |
53cdc686 | 454 | else |
21972cde JA |
455 | err = setup_files_plain(td); |
456 | ||
457 | for_each_file(td, f, i) { | |
458 | if (f->fd != -1) { | |
459 | close(f->fd); | |
460 | f->fd = -1; | |
461 | } | |
462 | } | |
463 | ||
464 | return err; | |
53cdc686 JA |
465 | } |
466 | ||
467 | void close_files(struct thread_data *td) | |
468 | { | |
0ab8db89 | 469 | struct fio_file *f; |
53cdc686 JA |
470 | int i; |
471 | ||
0ab8db89 | 472 | for_each_file(td, f, i) { |
9b031dc8 | 473 | if (!td->filename && f->unlink && |
02bcaa8c | 474 | td->filetype == FIO_TYPE_FILE) { |
132ad46d JA |
475 | unlink(f->file_name); |
476 | free(f->file_name); | |
477 | f->file_name = NULL; | |
478 | } | |
21972cde JA |
479 | if (f->fd != -1) { |
480 | close(f->fd); | |
481 | f->fd = -1; | |
482 | } | |
53cdc686 JA |
483 | if (f->mmap) { |
484 | munmap(f->mmap, f->file_size); | |
485 | f->mmap = NULL; | |
486 | } | |
487 | } | |
b4a6a59a | 488 | |
132ad46d | 489 | td->filename = NULL; |
b4a6a59a JA |
490 | free(td->files); |
491 | td->files = NULL; | |
492 | td->nr_files = 0; | |
53cdc686 | 493 | } |