More iolog fixes
[fio.git] / filesetup.c
CommitLineData
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"
53cdc686 11
7bb48f84 12static int extend_file(struct thread_data *td, struct fio_file *f)
25205e97 13{
ea443657 14 int r, new_layout = 0, unlink_file = 0, flags;
25205e97
JA
15 unsigned long long left;
16 unsigned int bs;
17 char *b;
b2a15192 18
507a702f
JA
19 /*
20 * check if we need to lay the file out complete again. fio
21 * does that for operations involving reads, or for writes
22 * where overwrite is set
23 */
24 if (td_read(td) || (td_write(td) && td->o.overwrite))
25 new_layout = 1;
ea443657
JA
26 if (td_write(td) && !td->o.overwrite)
27 unlink_file = 1;
507a702f 28
ea443657 29 if ((unlink_file || new_layout) && (f->flags & FIO_FILE_EXISTS)) {
7bb48f84
JA
30 if (unlink(f->file_name) < 0) {
31 td_verror(td, errno, "unlink");
32 return 1;
33 }
34 }
35
507a702f
JA
36 flags = O_WRONLY | O_CREAT;
37 if (new_layout)
38 flags |= O_TRUNC;
39
40 f->fd = open(f->file_name, flags, 0644);
53cdc686 41 if (f->fd < 0) {
e1161c32 42 td_verror(td, errno, "open");
53cdc686
JA
43 return 1;
44 }
45
7bb48f84 46 if (ftruncate(f->fd, f->real_file_size) == -1) {
e1161c32 47 td_verror(td, errno, "ftruncate");
53cdc686
JA
48 goto err;
49 }
50
e8be2ad7
JA
51 if (!new_layout)
52 goto done;
53
7bb48f84 54 if (posix_fallocate(f->fd, 0, f->real_file_size) < 0) {
e1161c32 55 td_verror(td, errno, "posix_fallocate");
40f8298c
JA
56 goto err;
57 }
58
2dc1bbeb
JA
59 b = malloc(td->o.max_bs[DDIR_WRITE]);
60 memset(b, 0, td->o.max_bs[DDIR_WRITE]);
53cdc686 61
7bb48f84 62 left = f->real_file_size;
53cdc686 63 while (left && !td->terminate) {
2dc1bbeb 64 bs = td->o.max_bs[DDIR_WRITE];
53cdc686
JA
65 if (bs > left)
66 bs = left;
67
68 r = write(f->fd, b, bs);
69
70 if (r == (int) bs) {
71 left -= bs;
72 continue;
73 } else {
74 if (r < 0)
e1161c32 75 td_verror(td, errno, "write");
53cdc686 76 else
e1161c32 77 td_verror(td, EIO, "write");
53cdc686
JA
78
79 break;
80 }
81 }
82
83 if (td->terminate)
84 unlink(f->file_name);
2dc1bbeb 85 else if (td->o.create_fsync)
53cdc686
JA
86 fsync(f->fd);
87
88 free(b);
507a702f 89done:
53cdc686
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90 close(f->fd);
91 f->fd = -1;
92 return 0;
93err:
94 close(f->fd);
95 f->fd = -1;
96 return 1;
97}
98
7bb48f84 99static unsigned long long get_rand_file_size(struct thread_data *td)
9c60ce64 100{
9c60ce64
JA
101 unsigned long long ret;
102 long r;
103
9c60ce64 104 r = os_random_long(&td->file_size_state);
7bb48f84 105 ret = td->o.file_size_low + (unsigned long long) ((double) td->o.file_size_high * (r / (RAND_MAX + 1.0)));
2dc1bbeb 106 ret -= (ret % td->o.rw_min_bs);
9c60ce64
JA
107 return ret;
108}
109
53cdc686
JA
110static int file_size(struct thread_data *td, struct fio_file *f)
111{
112 struct stat st;
113
7bb48f84
JA
114 if (fstat(f->fd, &st) == -1) {
115 td_verror(td, errno, "fstat");
116 return 1;
117 }
53cdc686 118
7bb48f84 119 f->real_file_size = st.st_size;
53cdc686
JA
120 return 0;
121}
122
123static int bdev_size(struct thread_data *td, struct fio_file *f)
124{
125 unsigned long long bytes;
126 int r;
127
128 r = blockdev_size(f->fd, &bytes);
129 if (r) {
e1161c32 130 td_verror(td, r, "blockdev_size");
53cdc686
JA
131 return 1;
132 }
133
134 f->real_file_size = bytes;
53cdc686
JA
135 return 0;
136}
137
138static int get_file_size(struct thread_data *td, struct fio_file *f)
139{
140 int ret = 0;
141
409b3417
JA
142 if (f->flags & FIO_SIZE_KNOWN)
143 return 0;
144
7bb48f84
JA
145 if (f->filetype == FIO_TYPE_FILE)
146 ret = file_size(td, f);
147 else if (f->filetype == FIO_TYPE_BD)
53cdc686
JA
148 ret = bdev_size(td, f);
149 else
150 f->real_file_size = -1;
151
152 if (ret)
153 return ret;
154
155 if (f->file_offset > f->real_file_size) {
2dc1bbeb 156 log_err("%s: offset extends end (%Lu > %Lu)\n", td->o.name, f->file_offset, f->real_file_size);
53cdc686
JA
157 return 1;
158 }
159
409b3417 160 f->flags |= FIO_SIZE_KNOWN;
53cdc686
JA
161 return 0;
162}
163
e5b401d4
JA
164int file_invalidate_cache(struct thread_data *td, struct fio_file *f)
165{
166 int ret = 0;
167
2dc1bbeb 168 if (td->o.odirect)
b5af8293
JA
169 return 0;
170
e5b401d4
JA
171 /*
172 * FIXME: add blockdev flushing too
173 */
b5af8293 174 if (f->mmap)
7bb48f84 175 ret = madvise(f->mmap, f->io_size, MADV_DONTNEED);
467d1b6b 176 else if (f->filetype == FIO_TYPE_FILE)
7bb48f84 177 ret = fadvise(f->fd, f->file_offset, f->io_size, POSIX_FADV_DONTNEED);
7e0e25c9 178 else if (f->filetype == FIO_TYPE_BD) {
b5af8293 179 ret = blockdev_invalidate_cache(f->fd);
7e0e25c9
JA
180 if (ret < 0 && errno == EACCES && geteuid()) {
181 log_err("fio: only root may flush block devices. Cache flush bypassed!\n");
182 ret = 0;
183 }
b5605e9d 184 } else if (f->filetype == FIO_TYPE_CHAR || f->filetype == FIO_TYPE_PIPE)
e5b401d4
JA
185 ret = 0;
186
187 if (ret < 0) {
e1161c32 188 td_verror(td, errno, "invalidate_cache");
e5b401d4
JA
189 return 1;
190 }
191
ad2da605 192 return ret;
e5b401d4
JA
193}
194
b5af8293 195void generic_close_file(struct thread_data fio_unused *td, struct fio_file *f)
53cdc686 196{
b5af8293
JA
197 close(f->fd);
198 f->fd = -1;
53cdc686
JA
199}
200
b5af8293 201int generic_open_file(struct thread_data *td, struct fio_file *f)
53cdc686 202{
66159828 203 int is_std = 0;
53cdc686
JA
204 int flags = 0;
205
66159828
JA
206 if (!strcmp(f->file_name, "-")) {
207 if (td_rw(td)) {
208 log_err("fio: can't read/write to stdin/out\n");
209 return 1;
210 }
211 is_std = 1;
ce98fa66
JA
212
213 /*
214 * move output logging to stderr, if we are writing to stdout
215 */
216 if (td_write(td))
217 f_out = stderr;
66159828
JA
218 }
219
2dc1bbeb 220 if (td->o.odirect)
2fd233b7 221 flags |= OS_O_DIRECT;
2dc1bbeb 222 if (td->o.sync_io)
2fd233b7 223 flags |= O_SYNC;
53cdc686 224
660a1cb5 225 if (td_write(td)) {
2fd233b7 226 flags |= O_RDWR;
53cdc686 227
af52b345 228 if (f->filetype == FIO_TYPE_FILE)
2fd233b7 229 flags |= O_CREAT;
2fd233b7 230
66159828
JA
231 if (is_std)
232 f->fd = dup(STDOUT_FILENO);
233 else
234 f->fd = open(f->file_name, flags, 0600);
2fd233b7 235 } else {
af52b345 236 if (f->filetype == FIO_TYPE_CHAR)
2fd233b7
JA
237 flags |= O_RDWR;
238 else
239 flags |= O_RDONLY;
240
66159828
JA
241 if (is_std)
242 f->fd = dup(STDIN_FILENO);
243 else
244 f->fd = open(f->file_name, flags);
53cdc686
JA
245 }
246
247 if (f->fd == -1) {
e4e33258 248 char buf[FIO_VERROR_SIZE];
e1161c32
JA
249 int __e = errno;
250
e4e33258
JA
251 snprintf(buf, sizeof(buf) - 1, "open(%s)", f->file_name);
252
253 td_verror(td, __e, buf);
53cdc686
JA
254 }
255
b5af8293
JA
256 if (get_file_size(td, f))
257 goto err;
258
53cdc686 259 return 0;
b5af8293
JA
260err:
261 close(f->fd);
262 return 1;
263}
264
21972cde
JA
265int open_files(struct thread_data *td)
266{
267 struct fio_file *f;
af52b345
JA
268 unsigned int i;
269 int err = 0;
21972cde
JA
270
271 for_each_file(td, f, i) {
b5af8293 272 err = td_io_open_file(td, f);
9bf27b45
JA
273 if (err) {
274 if (td->error == EMFILE) {
275 log_err("fio: limited open files to: %d\n", td->nr_open_files);
276 td->o.open_files = td->nr_open_files;
277 err = 0;
278 clear_error(td);
279 }
21972cde 280 break;
9bf27b45 281 }
b5af8293 282
2dc1bbeb 283 if (td->o.open_files == td->nr_open_files)
b5af8293 284 break;
21972cde
JA
285 }
286
7abf833d
JA
287 if (!err)
288 return 0;
289
bdb4e2e9 290 for_each_file(td, f, i)
b5af8293 291 td_io_close_file(td, f);
7abf833d 292
21972cde
JA
293 return err;
294}
295
7bb48f84
JA
296/*
297 * open/close all files, so that ->real_file_size gets set
298 */
bab3fd58 299static int get_file_sizes(struct thread_data *td)
7bb48f84
JA
300{
301 struct fio_file *f;
302 unsigned int i;
bab3fd58 303 int err = 0;
7bb48f84
JA
304
305 for_each_file(td, f, i) {
bab3fd58 306 if (td->io_ops->open_file(td, f)) {
40b44f4a
JA
307 if (td->error != ENOENT) {
308 log_err("%s\n", td->verror);
309 err = 1;
310 }
541d66d7 311 clear_error(td);
07eb79df
JA
312 } else {
313 if (td->io_ops->close_file)
314 td->io_ops->close_file(td, f);
315 }
409b3417
JA
316
317 if (f->real_file_size == -1ULL && td->o.size)
318 f->real_file_size = td->o.size / td->o.nr_files;
7bb48f84 319 }
bab3fd58
JA
320
321 return err;
7bb48f84
JA
322}
323
324/*
325 * Open the files and setup files sizes, creating files if necessary.
326 */
53cdc686
JA
327int setup_files(struct thread_data *td)
328{
7bb48f84 329 unsigned long long total_size, extend_size;
53cdc686 330 struct fio_file *f;
af52b345 331 unsigned int i;
000b0803 332 int err = 0, need_extend;
53cdc686
JA
333
334 /*
335 * if ioengine defines a setup() method, it's responsible for
7bb48f84
JA
336 * opening the files and setting f->real_file_size to indicate
337 * the valid range for that file.
53cdc686
JA
338 */
339 if (td->io_ops->setup)
7bb48f84
JA
340 err = td->io_ops->setup(td);
341 else
bab3fd58 342 err = get_file_sizes(td);
53cdc686 343
f1027063
JA
344 if (err)
345 return err;
346
0a7eb121 347 /*
7bb48f84
JA
348 * check sizes. if the files/devices do not exist and the size
349 * isn't passed to fio, abort.
0a7eb121 350 */
7bb48f84
JA
351 total_size = 0;
352 for_each_file(td, f, i) {
353 if (f->real_file_size == -1ULL)
354 total_size = -1ULL;
355 else
356 total_size += f->real_file_size;
357 }
0a7eb121 358
7bb48f84
JA
359 /*
360 * device/file sizes are zero and no size given, punt
361 */
409b3417 362 if ((!total_size || total_size == -1ULL) && !td->o.size) {
7bb48f84 363 log_err("%s: you need to specify size=\n", td->o.name);
e1161c32 364 td_verror(td, EINVAL, "total_file_size");
53cdc686
JA
365 return 1;
366 }
367
7bb48f84
JA
368 /*
369 * now file sizes are known, so we can set ->io_size. if size= is
370 * not given, ->io_size is just equal to ->real_file_size. if size
371 * is given, ->io_size is size / nr_files.
372 */
373 extend_size = total_size = 0;
374 need_extend = 0;
375 for_each_file(td, f, i) {
376 if (!td->o.file_size_low) {
377 /*
378 * no file size range given, file size is equal to
379 * total size divided by number of files. if that is
380 * zero, set it to the real file size.
381 */
382 f->io_size = td->o.size / td->o.nr_files;
383 if (!f->io_size)
384 f->io_size = f->real_file_size;
385 } else if (f->real_file_size < td->o.file_size_low ||
386 f->real_file_size > td->o.file_size_high) {
387 /*
388 * file size given. if it's fixed, use that. if it's a
389 * range, generate a random size in-between.
390 */
391 if (td->o.file_size_low == td->o.file_size_high)
392 f->io_size = td->o.file_size_low;
393 else
394 f->io_size = get_rand_file_size(td);
395 } else
396 f->io_size = f->real_file_size;
53cdc686 397
7bb48f84
JA
398 if (f->io_size == -1ULL)
399 total_size = -1ULL;
400 else
401 total_size += f->io_size;
402
403 if (f->filetype == FIO_TYPE_FILE &&
404 f->io_size > f->real_file_size &&
405 !(td->io_ops->flags & FIO_DISKLESSIO)) {
406 need_extend++;
407 extend_size += f->io_size;
408 f->flags |= FIO_FILE_EXTEND;
409 }
410 }
53cdc686 411
7bb48f84
JA
412 if (!td->o.size)
413 td->o.size = total_size;
21972cde 414
7bb48f84
JA
415 /*
416 * See if we need to extend some files
417 */
418 if (need_extend) {
419 temp_stall_ts = 1;
420 log_info("%s: Laying out IO file(s) (%u files / %LuMiB)\n",
421 td->o.name, need_extend, extend_size >> 20);
422
423 for_each_file(td, f, i) {
424 if (!(f->flags & FIO_FILE_EXTEND))
425 continue;
426
409b3417 427 assert(f->filetype == FIO_TYPE_FILE);
7bb48f84
JA
428 f->flags &= ~FIO_FILE_EXTEND;
429 f->real_file_size = f->io_size;
430 err = extend_file(td, f);
431 if (err)
432 break;
433 }
434 temp_stall_ts = 0;
435 }
436
437 if (err)
438 return err;
439
440 if (!td->o.zone_size)
441 td->o.zone_size = td->o.size;
442
443 td->total_io_size = td->o.size * td->o.loops;
444 return 0;
53cdc686
JA
445}
446
68727076
JA
447int init_random_map(struct thread_data *td)
448{
449 int num_maps, blocks;
450 struct fio_file *f;
451 unsigned int i;
452
453 if (td->o.norandommap)
454 return 0;
455
456 for_each_file(td, f, i) {
457 blocks = (f->real_file_size + td->o.rw_min_bs - 1) / td->o.rw_min_bs;
458 num_maps = (blocks + BLOCKS_PER_MAP-1)/ BLOCKS_PER_MAP;
459 f->file_map = malloc(num_maps * sizeof(long));
460 if (!f->file_map) {
461 log_err("fio: failed allocating random map. If running a large number of jobs, try the 'norandommap' option\n");
462 return 1;
463 }
464 f->num_maps = num_maps;
465 memset(f->file_map, 0, num_maps * sizeof(long));
466 }
467
468 return 0;
469}
470
53cdc686
JA
471void close_files(struct thread_data *td)
472{
0ab8db89 473 struct fio_file *f;
af52b345 474 unsigned int i;
53cdc686 475
0ab8db89 476 for_each_file(td, f, i) {
a9b7b305 477 if (td->o.unlink && f->filetype == FIO_TYPE_FILE)
132ad46d 478 unlink(f->file_name);
bdb4e2e9 479
b5af8293 480 td_io_close_file(td, f);
b3dc7f07 481
fa1da865
JA
482 free(f->file_name);
483 f->file_name = NULL;
484
c343981b 485 if (f->file_map) {
b3dc7f07 486 free(f->file_map);
c343981b
JA
487 f->file_map = NULL;
488 }
53cdc686 489 }
b4a6a59a 490
2dc1bbeb 491 td->o.filename = NULL;
cade3ef4 492 free(td->files);
b4a6a59a 493 td->files = NULL;
2dc1bbeb 494 td->o.nr_files = 0;
53cdc686 495}
af52b345 496
e3bab463 497static void get_file_type(struct fio_file *f)
af52b345
JA
498{
499 struct stat sb;
500
66159828
JA
501 if (!strcmp(f->file_name, "-"))
502 f->filetype = FIO_TYPE_PIPE;
503 else
504 f->filetype = FIO_TYPE_FILE;
af52b345 505
e3bab463 506 if (!lstat(f->file_name, &sb)) {
af52b345
JA
507 if (S_ISBLK(sb.st_mode))
508 f->filetype = FIO_TYPE_BD;
509 else if (S_ISCHR(sb.st_mode))
510 f->filetype = FIO_TYPE_CHAR;
b5605e9d
JA
511 else if (S_ISFIFO(sb.st_mode))
512 f->filetype = FIO_TYPE_PIPE;
af52b345
JA
513 }
514}
515
516void add_file(struct thread_data *td, const char *fname)
517{
7b4e4fe5 518 int cur_files = td->files_index;
bd0ee748 519 char file_name[PATH_MAX];
af52b345 520 struct fio_file *f;
bd0ee748 521 int len = 0;
af52b345
JA
522
523 td->files = realloc(td->files, (cur_files + 1) * sizeof(*f));
524
525 f = &td->files[cur_files];
526 memset(f, 0, sizeof(*f));
527 f->fd = -1;
bd0ee748 528
07eb79df
JA
529 /*
530 * init function, io engine may not be loaded yet
531 */
532 if (td->io_ops && (td->io_ops->flags & FIO_DISKLESSIO))
533 f->real_file_size = -1ULL;
534
bd0ee748
JA
535 if (td->o.directory)
536 len = sprintf(file_name, "%s/", td->o.directory);
537
538 sprintf(file_name + len, "%s", fname);
539 f->file_name = strdup(file_name);
af52b345 540
e3bab463 541 get_file_type(f);
af52b345 542
7b4e4fe5 543 td->files_index++;
1549441c
JA
544 if (f->filetype == FIO_TYPE_FILE)
545 td->nr_normal_files++;
af52b345 546}
0ad920e7
JA
547
548void get_file(struct fio_file *f)
549{
550 f->references++;
551}
552
553void put_file(struct thread_data *td, struct fio_file *f)
554{
555 if (!(f->flags & FIO_FILE_OPEN))
556 return;
557
558 assert(f->references);
559 if (--f->references)
560 return;
561
d424d4dd 562 if (should_fsync(td) && td->o.fsync_on_close)
ebb1415f
JA
563 fsync(f->fd);
564
0ad920e7
JA
565 if (td->io_ops->close_file)
566 td->io_ops->close_file(td, f);
1020a139 567
0ad920e7
JA
568 td->nr_open_files--;
569 f->flags &= ~FIO_FILE_OPEN;
570}
bbf6b540
JA
571
572static int recurse_dir(struct thread_data *td, const char *dirname)
573{
574 struct dirent *dir;
575 int ret = 0;
576 DIR *D;
577
578 D = opendir(dirname);
579 if (!D) {
0ddb270c
JA
580 char buf[FIO_VERROR_SIZE];
581
582 snprintf(buf, FIO_VERROR_SIZE - 1, "opendir(%s)", dirname);
583 td_verror(td, errno, buf);
bbf6b540
JA
584 return 1;
585 }
586
587 while ((dir = readdir(D)) != NULL) {
588 char full_path[PATH_MAX];
589 struct stat sb;
590
e85b2b83
JA
591 if (!strcmp(dir->d_name, ".") || !strcmp(dir->d_name, ".."))
592 continue;
96d32d51 593
bbf6b540
JA
594 sprintf(full_path, "%s/%s", dirname, dir->d_name);
595
596 if (lstat(full_path, &sb) == -1) {
597 if (errno != ENOENT) {
598 td_verror(td, errno, "stat");
599 return 1;
600 }
601 }
602
603 if (S_ISREG(sb.st_mode)) {
604 add_file(td, full_path);
2dc1bbeb 605 td->o.nr_files++;
bbf6b540
JA
606 continue;
607 }
0ddb270c
JA
608 if (!S_ISDIR(sb.st_mode))
609 continue;
bbf6b540 610
bbf6b540
JA
611 if ((ret = recurse_dir(td, full_path)) != 0)
612 break;
613 }
614
615 closedir(D);
616 return ret;
617}
618
619int add_dir_files(struct thread_data *td, const char *path)
620{
0ddb270c
JA
621 int ret = recurse_dir(td, path);
622
623 if (!ret)
624 log_info("fio: opendir added %d files\n", td->o.nr_files);
625
626 return ret;
bbf6b540 627}
cade3ef4
JA
628
629void dup_files(struct thread_data *td, struct thread_data *org)
630{
631 struct fio_file *f;
632 unsigned int i;
633 size_t bytes;
634
635 if (!org->files)
636 return;
637
638 bytes = org->files_index * sizeof(*f);
639 td->files = malloc(bytes);
640 memcpy(td->files, org->files, bytes);
641
642 for_each_file(td, f, i) {
643 if (f->file_name)
644 f->file_name = strdup(f->file_name);
645 }
646}