projects / fio.git / blame_incremental
? search:
summary | shortlog | log | commit | commitdiff | tree
blob | blame (non-incremental) | history | HEAD
Rename thread_options' ->io_limit to io_size
[fio.git] / filesetup.c
... / ...
CommitLineData
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#include "options.h"
15#include "os/os.h"
16#include "hash.h"
17#include "lib/axmap.h"
18
19#ifdef CONFIG_LINUX_FALLOCATE
20#include <linux/falloc.h>
21#endif
22
23static int root_warn;
24
25static FLIST_HEAD(filename_list);
26
27static inline void clear_error(struct thread_data *td)
28{
29 td->error = 0;
30 td->verror[0] = '\0';
31}
32
33/*
34 * Leaves f->fd open on success, caller must close
35 */
36static int extend_file(struct thread_data *td, struct fio_file *f)
37{
38 int r, new_layout = 0, unlink_file = 0, flags;
39 unsigned long long left;
40 unsigned int bs;
41 char *b = NULL;
42
43 if (read_only) {
44 log_err("fio: refusing extend of file due to read-only\n");
45 return 0;
46 }
47
48 /*
49 * check if we need to lay the file out complete again. fio
50 * does that for operations involving reads, or for writes
51 * where overwrite is set
52 */
53 if (td_read(td) ||
54 (td_write(td) && td->o.overwrite && !td->o.file_append) ||
55 (td_write(td) && td_ioengine_flagged(td, FIO_NOEXTEND)))
56 new_layout = 1;
57 if (td_write(td) && !td->o.overwrite && !td->o.file_append)
58 unlink_file = 1;
59
60 if (unlink_file || new_layout) {
61 int ret;
62
63 dprint(FD_FILE, "layout unlink %s\n", f->file_name);
64
65 ret = td_io_unlink_file(td, f);
66 if (ret != 0 && ret != ENOENT) {
67 td_verror(td, errno, "unlink");
68 return 1;
69 }
70 }
71
72 flags = O_WRONLY;
73 if (td->o.allow_create)
74 flags |= O_CREAT;
75 if (new_layout)
76 flags |= O_TRUNC;
77
78#ifdef WIN32
79 flags |= _O_BINARY;
80#endif
81
82 dprint(FD_FILE, "open file %s, flags %x\n", f->file_name, flags);
83 f->fd = open(f->file_name, flags, 0644);
84 if (f->fd < 0) {
85 int err = errno;
86
87 if (err == ENOENT && !td->o.allow_create)
88 log_err("fio: file creation disallowed by "
89 "allow_file_create=0\n");
90 else
91 td_verror(td, err, "open");
92 return 1;
93 }
94
95#ifdef CONFIG_POSIX_FALLOCATE
96 if (!td->o.fill_device) {
97 switch (td->o.fallocate_mode) {
98 case FIO_FALLOCATE_NONE:
99 break;
100 case FIO_FALLOCATE_POSIX:
101 dprint(FD_FILE, "posix_fallocate file %s size %llu\n",
102 f->file_name,
103 (unsigned long long) f->real_file_size);
104
105 r = posix_fallocate(f->fd, 0, f->real_file_size);
106 if (r > 0) {
107 log_err("fio: posix_fallocate fails: %s\n",
108 strerror(r));
109 }
110 break;
111#ifdef CONFIG_LINUX_FALLOCATE
112 case FIO_FALLOCATE_KEEP_SIZE:
113 dprint(FD_FILE,
114 "fallocate(FALLOC_FL_KEEP_SIZE) "
115 "file %s size %llu\n", f->file_name,
116 (unsigned long long) f->real_file_size);
117
118 r = fallocate(f->fd, FALLOC_FL_KEEP_SIZE, 0,
119 f->real_file_size);
120 if (r != 0)
121 td_verror(td, errno, "fallocate");
122
123 break;
124#endif /* CONFIG_LINUX_FALLOCATE */
125 default:
126 log_err("fio: unknown fallocate mode: %d\n",
127 td->o.fallocate_mode);
128 assert(0);
129 }
130 }
131#endif /* CONFIG_POSIX_FALLOCATE */
132
133 if (!new_layout)
134 goto done;
135
136 /*
137 * The size will be -1ULL when fill_device is used, so don't truncate
138 * or fallocate this file, just write it
139 */
140 if (!td->o.fill_device) {
141 dprint(FD_FILE, "truncate file %s, size %llu\n", f->file_name,
142 (unsigned long long) f->real_file_size);
143 if (ftruncate(f->fd, f->real_file_size) == -1) {
144 if (errno != EFBIG) {
145 td_verror(td, errno, "ftruncate");
146 goto err;
147 }
148 }
149 }
150
151 b = malloc(td->o.max_bs[DDIR_WRITE]);
152
153 left = f->real_file_size;
154 while (left && !td->terminate) {
155 bs = td->o.max_bs[DDIR_WRITE];
156 if (bs > left)
157 bs = left;
158
159 fill_io_buffer(td, b, bs, bs);
160
161 r = write(f->fd, b, bs);
162
163 if (r > 0) {
164 left -= r;
165 continue;
166 } else {
167 if (r < 0) {
168 int __e = errno;
169
170 if (__e == ENOSPC) {
171 if (td->o.fill_device)
172 break;
173 log_info("fio: ENOSPC on laying out "
174 "file, stopping\n");
175 break;
176 }
177 td_verror(td, errno, "write");
178 } else
179 td_verror(td, EIO, "write");
180
181 break;
182 }
183 }
184
185 if (td->terminate) {
186 dprint(FD_FILE, "terminate unlink %s\n", f->file_name);
187 td_io_unlink_file(td, f);
188 } else if (td->o.create_fsync) {
189 if (fsync(f->fd) < 0) {
190 td_verror(td, errno, "fsync");
191 goto err;
192 }
193 }
194 if (td->o.fill_device && !td_write(td)) {
195 fio_file_clear_size_known(f);
196 if (td_io_get_file_size(td, f))
197 goto err;
198 if (f->io_size > f->real_file_size)
199 f->io_size = f->real_file_size;
200 }
201
202 free(b);
203done:
204 return 0;
205err:
206 close(f->fd);
207 f->fd = -1;
208 if (b)
209 free(b);
210 return 1;
211}
212
213static int pre_read_file(struct thread_data *td, struct fio_file *f)
214{
215 int ret = 0, r, did_open = 0, old_runstate;
216 unsigned long long left;
217 unsigned int bs;
218 char *b;
219
220 if (td_ioengine_flagged(td, FIO_PIPEIO))
221 return 0;
222
223 if (!fio_file_open(f)) {
224 if (td->io_ops->open_file(td, f)) {
225 log_err("fio: cannot pre-read, failed to open file\n");
226 return 1;
227 }
228 did_open = 1;
229 }
230
231 old_runstate = td_bump_runstate(td, TD_PRE_READING);
232
233 bs = td->o.max_bs[DDIR_READ];
234 b = malloc(bs);
235 memset(b, 0, bs);
236
237 if (lseek(f->fd, f->file_offset, SEEK_SET) < 0) {
238 td_verror(td, errno, "lseek");
239 log_err("fio: failed to lseek pre-read file\n");
240 ret = 1;
241 goto error;
242 }
243
244 left = f->io_size;
245
246 while (left && !td->terminate) {
247 if (bs > left)
248 bs = left;
249
250 r = read(f->fd, b, bs);
251
252 if (r == (int) bs) {
253 left -= bs;
254 continue;
255 } else {
256 td_verror(td, EIO, "pre_read");
257 break;
258 }
259 }
260
261error:
262 td_restore_runstate(td, old_runstate);
263
264 if (did_open)
265 td->io_ops->close_file(td, f);
266
267 free(b);
268 return ret;
269}
270
271unsigned long long get_rand_file_size(struct thread_data *td)
272{
273 unsigned long long ret, sized;
274 uint64_t frand_max;
275 unsigned long r;
276
277 frand_max = rand_max(&td->file_size_state);
278 r = __rand(&td->file_size_state);
279 sized = td->o.file_size_high - td->o.file_size_low;
280 ret = (unsigned long long) ((double) sized * (r / (frand_max + 1.0)));
281 ret += td->o.file_size_low;
282 ret -= (ret % td->o.rw_min_bs);
283 return ret;
284}
285
286static int file_size(struct thread_data *td, struct fio_file *f)
287{
288 struct stat st;
289
290 if (stat(f->file_name, &st) == -1) {
291 td_verror(td, errno, "fstat");
292 return 1;
293 }
294
295 f->real_file_size = st.st_size;
296 return 0;
297}
298
299static int bdev_size(struct thread_data *td, struct fio_file *f)
300{
301 unsigned long long bytes = 0;
302 int r;
303
304 if (td->io_ops->open_file(td, f)) {
305 log_err("fio: failed opening blockdev %s for size check\n",
306 f->file_name);
307 return 1;
308 }
309
310 r = blockdev_size(f, &bytes);
311 if (r) {
312 td_verror(td, r, "blockdev_size");
313 goto err;
314 }
315
316 if (!bytes) {
317 log_err("%s: zero sized block device?\n", f->file_name);
318 goto err;
319 }
320
321 f->real_file_size = bytes;
322 td->io_ops->close_file(td, f);
323 return 0;
324err:
325 td->io_ops->close_file(td, f);
326 return 1;
327}
328
329static int char_size(struct thread_data *td, struct fio_file *f)
330{
331#ifdef FIO_HAVE_CHARDEV_SIZE
332 unsigned long long bytes = 0;
333 int r;
334
335 if (td->io_ops->open_file(td, f)) {
336 log_err("fio: failed opening chardev %s for size check\n",
337 f->file_name);
338 return 1;
339 }
340
341 r = chardev_size(f, &bytes);
342 if (r) {
343 td_verror(td, r, "chardev_size");
344 goto err;
345 }
346
347 if (!bytes) {
348 log_err("%s: zero sized char device?\n", f->file_name);
349 goto err;
350 }
351
352 f->real_file_size = bytes;
353 td->io_ops->close_file(td, f);
354 return 0;
355err:
356 td->io_ops->close_file(td, f);
357 return 1;
358#else
359 f->real_file_size = -1ULL;
360 return 0;
361#endif
362}
363
364static int get_file_size(struct thread_data *td, struct fio_file *f)
365{
366 int ret = 0;
367
368 if (fio_file_size_known(f))
369 return 0;
370
371 if (f->filetype == FIO_TYPE_FILE)
372 ret = file_size(td, f);
373 else if (f->filetype == FIO_TYPE_BLOCK)
374 ret = bdev_size(td, f);
375 else if (f->filetype == FIO_TYPE_CHAR)
376 ret = char_size(td, f);
377 else
378 f->real_file_size = -1;
379
380 if (ret)
381 return ret;
382
383 if (f->file_offset > f->real_file_size) {
384 log_err("%s: offset extends end (%llu > %llu)\n", td->o.name,
385 (unsigned long long) f->file_offset,
386 (unsigned long long) f->real_file_size);
387 return 1;
388 }
389
390 fio_file_set_size_known(f);
391 return 0;
392}
393
394static int __file_invalidate_cache(struct thread_data *td, struct fio_file *f,
395 unsigned long long off,
396 unsigned long long len)
397{
398 int errval = 0, ret = 0;
399
400#ifdef CONFIG_ESX
401 return 0;
402#endif
403
404 if (len == -1ULL)
405 len = f->io_size;
406 if (off == -1ULL)
407 off = f->file_offset;
408
409 if (len == -1ULL || off == -1ULL)
410 return 0;
411
412 dprint(FD_IO, "invalidate cache %s: %llu/%llu\n", f->file_name, off,
413 len);
414
415 if (td->io_ops->invalidate) {
416 ret = td->io_ops->invalidate(td, f);
417 if (ret < 0)
418 errval = ret;
419 } else if (f->filetype == FIO_TYPE_FILE) {
420 ret = posix_fadvise(f->fd, off, len, POSIX_FADV_DONTNEED);
421 if (ret)
422 errval = ret;
423 } else if (f->filetype == FIO_TYPE_BLOCK) {
424 int retry_count = 0;
425
426 ret = blockdev_invalidate_cache(f);
427 while (ret < 0 && errno == EAGAIN && retry_count++ < 25) {
428 /*
429 * Linux multipath devices reject ioctl while
430 * the maps are being updated. That window can
431 * last tens of milliseconds; we'll try up to
432 * a quarter of a second.
433 */
434 usleep(10000);
435 ret = blockdev_invalidate_cache(f);
436 }
437 if (ret < 0 && errno == EACCES && geteuid()) {
438 if (!root_warn) {
439 log_err("fio: only root may flush block "
440 "devices. Cache flush bypassed!\n");
441 root_warn = 1;
442 }
443 ret = 0;
444 }
445 if (ret < 0)
446 errval = errno;
447 } else if (f->filetype == FIO_TYPE_CHAR || f->filetype == FIO_TYPE_PIPE)
448 ret = 0;
449
450 /*
451 * Cache flushing isn't a fatal condition, and we know it will
452 * happen on some platforms where we don't have the proper
453 * function to flush eg block device caches. So just warn and
454 * continue on our way.
455 */
456 if (errval)
457 log_info("fio: cache invalidation of %s failed: %s\n", f->file_name, strerror(errval));
458
459 return 0;
460
461}
462
463int file_invalidate_cache(struct thread_data *td, struct fio_file *f)
464{
465 if (!fio_file_open(f))
466 return 0;
467
468 return __file_invalidate_cache(td, f, -1ULL, -1ULL);
469}
470
471int generic_close_file(struct thread_data fio_unused *td, struct fio_file *f)
472{
473 int ret = 0;
474
475 dprint(FD_FILE, "fd close %s\n", f->file_name);
476
477 remove_file_hash(f);
478
479 if (close(f->fd) < 0)
480 ret = errno;
481
482 f->fd = -1;
483
484 if (f->shadow_fd != -1) {
485 close(f->shadow_fd);
486 f->shadow_fd = -1;
487 }
488
489 f->engine_data = 0;
490 return ret;
491}
492
493int file_lookup_open(struct fio_file *f, int flags)
494{
495 struct fio_file *__f;
496 int from_hash;
497
498 __f = lookup_file_hash(f->file_name);
499 if (__f) {
500 dprint(FD_FILE, "found file in hash %s\n", f->file_name);
501 f->lock = __f->lock;
502 from_hash = 1;
503 } else {
504 dprint(FD_FILE, "file not found in hash %s\n", f->file_name);
505 from_hash = 0;
506 }
507
508#ifdef WIN32
509 flags |= _O_BINARY;
510#endif
511
512 f->fd = open(f->file_name, flags, 0600);
513 return from_hash;
514}
515
516static int file_close_shadow_fds(struct thread_data *td)
517{
518 struct fio_file *f;
519 int num_closed = 0;
520 unsigned int i;
521
522 for_each_file(td, f, i) {
523 if (f->shadow_fd == -1)
524 continue;
525
526 close(f->shadow_fd);
527 f->shadow_fd = -1;
528 num_closed++;
529 }
530
531 return num_closed;
532}
533
534int generic_open_file(struct thread_data *td, struct fio_file *f)
535{
536 int is_std = 0;
537 int flags = 0;
538 int from_hash = 0;
539
540 dprint(FD_FILE, "fd open %s\n", f->file_name);
541
542 if (!strcmp(f->file_name, "-")) {
543 if (td_rw(td)) {
544 log_err("fio: can't read/write to stdin/out\n");
545 return 1;
546 }
547 is_std = 1;
548
549 /*
550 * move output logging to stderr, if we are writing to stdout
551 */
552 if (td_write(td))
553 f_out = stderr;
554 }
555
556 if (td_trim(td))
557 goto skip_flags;
558 if (td->o.odirect)
559 flags |= OS_O_DIRECT;
560 if (td->o.oatomic) {
561 if (!FIO_O_ATOMIC) {
562 td_verror(td, EINVAL, "OS does not support atomic IO");
563 return 1;
564 }
565 flags |= OS_O_DIRECT | FIO_O_ATOMIC;
566 }
567 if (td->o.sync_io)
568 flags |= O_SYNC;
569 if (td->o.create_on_open && td->o.allow_create)
570 flags |= O_CREAT;
571skip_flags:
572 if (f->filetype != FIO_TYPE_FILE)
573 flags |= FIO_O_NOATIME;
574
575open_again:
576 if (td_write(td)) {
577 if (!read_only)
578 flags |= O_RDWR;
579
580 if (f->filetype == FIO_TYPE_FILE && td->o.allow_create)
581 flags |= O_CREAT;
582
583 if (is_std)
584 f->fd = dup(STDOUT_FILENO);
585 else
586 from_hash = file_lookup_open(f, flags);
587 } else if (td_read(td)) {
588 if (f->filetype == FIO_TYPE_CHAR && !read_only)
589 flags |= O_RDWR;
590 else
591 flags |= O_RDONLY;
592
593 if (is_std)
594 f->fd = dup(STDIN_FILENO);
595 else
596 from_hash = file_lookup_open(f, flags);
597 } else { //td trim
598 flags |= O_RDWR;
599 from_hash = file_lookup_open(f, flags);
600 }
601
602 if (f->fd == -1) {
603 char buf[FIO_VERROR_SIZE];
604 int __e = errno;
605
606 if (__e == EPERM && (flags & FIO_O_NOATIME)) {
607 flags &= ~FIO_O_NOATIME;
608 goto open_again;
609 }
610 if (__e == EMFILE && file_close_shadow_fds(td))
611 goto open_again;
612
613 snprintf(buf, sizeof(buf), "open(%s)", f->file_name);
614
615 if (__e == EINVAL && (flags & OS_O_DIRECT)) {
616 log_err("fio: looks like your file system does not " \
617 "support direct=1/buffered=0\n");
618 }
619
620 td_verror(td, __e, buf);
621 return 1;
622 }
623
624 if (!from_hash && f->fd != -1) {
625 if (add_file_hash(f)) {
626 int fio_unused ret;
627
628 /*
629 * Stash away descriptor for later close. This is to
630 * work-around a "feature" on Linux, where a close of
631 * an fd that has been opened for write will trigger
632 * udev to call blkid to check partitions, fs id, etc.
633 * That pollutes the device cache, which can slow down
634 * unbuffered accesses.
635 */
636 if (f->shadow_fd == -1)
637 f->shadow_fd = f->fd;
638 else {
639 /*
640 * OK to ignore, we haven't done anything
641 * with it
642 */
643 ret = generic_close_file(td, f);
644 }
645 goto open_again;
646 }
647 }
648
649 return 0;
650}
651
652int generic_get_file_size(struct thread_data *td, struct fio_file *f)
653{
654 return get_file_size(td, f);
655}
656
657/*
658 * open/close all files, so that ->real_file_size gets set
659 */
660static int get_file_sizes(struct thread_data *td)
661{
662 struct fio_file *f;
663 unsigned int i;
664 int err = 0;
665
666 for_each_file(td, f, i) {
667 dprint(FD_FILE, "get file size for %p/%d/%p\n", f, i,
668 f->file_name);
669
670 if (td_io_get_file_size(td, f)) {
671 if (td->error != ENOENT) {
672 log_err("%s\n", td->verror);
673 err = 1;
674 break;
675 }
676 clear_error(td);
677 }
678
679 if (f->real_file_size == -1ULL && td->o.size)
680 f->real_file_size = td->o.size / td->o.nr_files;
681 }
682
683 return err;
684}
685
686struct fio_mount {
687 struct flist_head list;
688 const char *base;
689 char __base[256];
690 unsigned int key;
691};
692
693/*
694 * Get free number of bytes for each file on each unique mount.
695 */
696static unsigned long long get_fs_free_counts(struct thread_data *td)
697{
698 struct flist_head *n, *tmp;
699 unsigned long long ret = 0;
700 struct fio_mount *fm;
701 FLIST_HEAD(list);
702 struct fio_file *f;
703 unsigned int i;
704
705 for_each_file(td, f, i) {
706 struct stat sb;
707 char buf[256];
708
709 if (f->filetype == FIO_TYPE_BLOCK || f->filetype == FIO_TYPE_CHAR) {
710 if (f->real_file_size != -1ULL)
711 ret += f->real_file_size;
712 continue;
713 } else if (f->filetype != FIO_TYPE_FILE)
714 continue;
715
716 buf[255] = '\0';
717 strncpy(buf, f->file_name, 255);
718
719 if (stat(buf, &sb) < 0) {
720 if (errno != ENOENT)
721 break;
722 strcpy(buf, ".");
723 if (stat(buf, &sb) < 0)
724 break;
725 }
726
727 fm = NULL;
728 flist_for_each(n, &list) {
729 fm = flist_entry(n, struct fio_mount, list);
730 if (fm->key == sb.st_dev)
731 break;
732
733 fm = NULL;
734 }
735
736 if (fm)
737 continue;
738
739 fm = calloc(1, sizeof(*fm));
740 strncpy(fm->__base, buf, sizeof(fm->__base) - 1);
741 fm->base = basename(fm->__base);
742 fm->key = sb.st_dev;
743 flist_add(&fm->list, &list);
744 }
745
746 flist_for_each_safe(n, tmp, &list) {
747 unsigned long long sz;
748
749 fm = flist_entry(n, struct fio_mount, list);
750 flist_del(&fm->list);
751
752 sz = get_fs_free_size(fm->base);
753 if (sz && sz != -1ULL)
754 ret += sz;
755
756 free(fm);
757 }
758
759 return ret;
760}
761
762uint64_t get_start_offset(struct thread_data *td, struct fio_file *f)
763{
764 struct thread_options *o = &td->o;
765
766 if (o->file_append && f->filetype == FIO_TYPE_FILE)
767 return f->real_file_size;
768
769 return td->o.start_offset +
770 td->subjob_number * td->o.offset_increment;
771}
772
773/*
774 * Open the files and setup files sizes, creating files if necessary.
775 */
776int setup_files(struct thread_data *td)
777{
778 unsigned long long total_size, extend_size;
779 struct thread_options *o = &td->o;
780 struct fio_file *f;
781 unsigned int i, nr_fs_extra = 0;
782 int err = 0, need_extend;
783 int old_state;
784 const unsigned int bs = td_min_bs(td);
785 uint64_t fs = 0;
786
787 dprint(FD_FILE, "setup files\n");
788
789 old_state = td_bump_runstate(td, TD_SETTING_UP);
790
791 if (o->read_iolog_file)
792 goto done;
793
794 /*
795 * if ioengine defines a setup() method, it's responsible for
796 * opening the files and setting f->real_file_size to indicate
797 * the valid range for that file.
798 */
799 if (td->io_ops->setup)
800 err = td->io_ops->setup(td);
801 else
802 err = get_file_sizes(td);
803
804 if (err)
805 goto err_out;
806
807 /*
808 * check sizes. if the files/devices do not exist and the size
809 * isn't passed to fio, abort.
810 */
811 total_size = 0;
812 for_each_file(td, f, i) {
813 f->fileno = i;
814 if (f->real_file_size == -1ULL)
815 total_size = -1ULL;
816 else
817 total_size += f->real_file_size;
818 }
819
820 if (o->fill_device)
821 td->fill_device_size = get_fs_free_counts(td);
822
823 /*
824 * device/file sizes are zero and no size given, punt
825 */
826 if ((!total_size || total_size == -1ULL) && !o->size &&
827 !td_ioengine_flagged(td, FIO_NOIO) && !o->fill_device &&
828 !(o->nr_files && (o->file_size_low || o->file_size_high))) {
829 log_err("%s: you need to specify size=\n", o->name);
830 td_verror(td, EINVAL, "total_file_size");
831 goto err_out;
832 }
833
834 /*
835 * Calculate per-file size and potential extra size for the
836 * first files, if needed.
837 */
838 if (!o->file_size_low && o->nr_files) {
839 uint64_t all_fs;
840
841 fs = o->size / o->nr_files;
842 all_fs = fs * o->nr_files;
843
844 if (all_fs < o->size)
845 nr_fs_extra = (o->size - all_fs) / bs;
846 }
847
848 /*
849 * now file sizes are known, so we can set ->io_size. if size= is
850 * not given, ->io_size is just equal to ->real_file_size. if size
851 * is given, ->io_size is size / nr_files.
852 */
853 extend_size = total_size = 0;
854 need_extend = 0;
855 for_each_file(td, f, i) {
856 f->file_offset = get_start_offset(td, f);
857
858 if (!o->file_size_low) {
859 /*
860 * no file size range given, file size is equal to
861 * total size divided by number of files. If that is
862 * zero, set it to the real file size. If the size
863 * doesn't divide nicely with the min blocksize,
864 * make the first files bigger.
865 */
866 f->io_size = fs;
867 if (nr_fs_extra) {
868 nr_fs_extra--;
869 f->io_size += bs;
870 }
871
872 if (!f->io_size)
873 f->io_size = f->real_file_size - f->file_offset;
874 } else if (f->real_file_size < o->file_size_low ||
875 f->real_file_size > o->file_size_high) {
876 if (f->file_offset > o->file_size_low)
877 goto err_offset;
878 /*
879 * file size given. if it's fixed, use that. if it's a
880 * range, generate a random size in-between.
881 */
882 if (o->file_size_low == o->file_size_high)
883 f->io_size = o->file_size_low - f->file_offset;
884 else {
885 f->io_size = get_rand_file_size(td)
886 - f->file_offset;
887 }
888 } else
889 f->io_size = f->real_file_size - f->file_offset;
890
891 if (f->io_size == -1ULL)
892 total_size = -1ULL;
893 else {
894 if (o->size_percent) {
895 f->io_size = (f->io_size * o->size_percent) / 100;
896 f->io_size -= (f->io_size % td_min_bs(td));
897 }
898 total_size += f->io_size;
899 }
900
901 if (f->filetype == FIO_TYPE_FILE &&
902 (f->io_size + f->file_offset) > f->real_file_size &&
903 !td_ioengine_flagged(td, FIO_DISKLESSIO)) {
904 if (!o->create_on_open) {
905 need_extend++;
906 extend_size += (f->io_size + f->file_offset);
907 } else
908 f->real_file_size = f->io_size + f->file_offset;
909 fio_file_set_extend(f);
910 }
911 }
912
913 if (td->o.block_error_hist) {
914 int len;
915
916 assert(td->o.nr_files == 1); /* checked in fixup_options */
917 f = td->files[0];
918 len = f->io_size / td->o.bs[DDIR_TRIM];
919 if (len > MAX_NR_BLOCK_INFOS || len <= 0) {
920 log_err("fio: cannot calculate block histogram with "
921 "%d trim blocks, maximum %d\n",
922 len, MAX_NR_BLOCK_INFOS);
923 td_verror(td, EINVAL, "block_error_hist");
924 goto err_out;
925 }
926
927 td->ts.nr_block_infos = len;
928 for (i = 0; i < len; i++)
929 td->ts.block_infos[i] =
930 BLOCK_INFO(0, BLOCK_STATE_UNINIT);
931 } else
932 td->ts.nr_block_infos = 0;
933
934 if (!o->size || (total_size && o->size > total_size))
935 o->size = total_size;
936
937 if (o->size < td_min_bs(td)) {
938 log_err("fio: blocksize too large for data set\n");
939 goto err_out;
940 }
941
942 /*
943 * See if we need to extend some files
944 */
945 if (need_extend) {
946 temp_stall_ts = 1;
947 if (output_format & FIO_OUTPUT_NORMAL)
948 log_info("%s: Laying out IO file(s) (%u file(s) / %lluMiB)\n",
949 o->name, need_extend, extend_size >> 20);
950
951 for_each_file(td, f, i) {
952 unsigned long long old_len = -1ULL, extend_len = -1ULL;
953
954 if (!fio_file_extend(f))
955 continue;
956
957 assert(f->filetype == FIO_TYPE_FILE);
958 fio_file_clear_extend(f);
959 if (!o->fill_device) {
960 old_len = f->real_file_size;
961 extend_len = f->io_size + f->file_offset -
962 old_len;
963 }
964 f->real_file_size = (f->io_size + f->file_offset);
965 err = extend_file(td, f);
966 if (err)
967 break;
968
969 err = __file_invalidate_cache(td, f, old_len,
970 extend_len);
971
972 /*
973 * Shut up static checker
974 */
975 if (f->fd != -1)
976 close(f->fd);
977
978 f->fd = -1;
979 if (err)
980 break;
981 }
982 temp_stall_ts = 0;
983 }
984
985 if (err)
986 goto err_out;
987
988 if (!o->zone_size)
989 o->zone_size = o->size;
990
991 /*
992 * iolog already set the total io size, if we read back
993 * stored entries.
994 */
995 if (!o->read_iolog_file) {
996 if (o->io_size)
997 td->total_io_size = o->io_size * o->loops;
998 else
999 td->total_io_size = o->size * o->loops;
1000 }
1001
1002done:
1003 if (o->create_only)
1004 td->done = 1;
1005
1006 td_restore_runstate(td, old_state);
1007 return 0;
1008err_offset:
1009 log_err("%s: you need to specify valid offset=\n", o->name);
1010err_out:
1011 td_restore_runstate(td, old_state);
1012 return 1;
1013}
1014
1015int pre_read_files(struct thread_data *td)
1016{
1017 struct fio_file *f;
1018 unsigned int i;
1019
1020 dprint(FD_FILE, "pre_read files\n");
1021
1022 for_each_file(td, f, i) {
1023 pre_read_file(td, f);
1024 }
1025
1026 return 1;
1027}
1028
1029static int __init_rand_distribution(struct thread_data *td, struct fio_file *f)
1030{
1031 unsigned int range_size, seed;
1032 unsigned long nranges;
1033 uint64_t fsize;
1034
1035 range_size = min(td->o.min_bs[DDIR_READ], td->o.min_bs[DDIR_WRITE]);
1036 fsize = min(f->real_file_size, f->io_size);
1037
1038 nranges = (fsize + range_size - 1) / range_size;
1039
1040 seed = jhash(f->file_name, strlen(f->file_name), 0) * td->thread_number;
1041 if (!td->o.rand_repeatable)
1042 seed = td->rand_seeds[4];
1043
1044 if (td->o.random_distribution == FIO_RAND_DIST_ZIPF)
1045 zipf_init(&f->zipf, nranges, td->o.zipf_theta.u.f, seed);
1046 else if (td->o.random_distribution == FIO_RAND_DIST_PARETO)
1047 pareto_init(&f->zipf, nranges, td->o.pareto_h.u.f, seed);
1048 else if (td->o.random_distribution == FIO_RAND_DIST_GAUSS)
1049 gauss_init(&f->gauss, nranges, td->o.gauss_dev.u.f, seed);
1050
1051 return 1;
1052}
1053
1054static int init_rand_distribution(struct thread_data *td)
1055{
1056 struct fio_file *f;
1057 unsigned int i;
1058 int state;
1059
1060 if (td->o.random_distribution == FIO_RAND_DIST_RANDOM)
1061 return 0;
1062
1063 state = td_bump_runstate(td, TD_SETTING_UP);
1064
1065 for_each_file(td, f, i)
1066 __init_rand_distribution(td, f);
1067
1068 td_restore_runstate(td, state);
1069
1070 return 1;
1071}
1072
1073/*
1074 * Check if the number of blocks exceeds the randomness capability of
1075 * the selected generator. Tausworthe is 32-bit, the others are fullly
1076 * 64-bit capable.
1077 */
1078static int check_rand_gen_limits(struct thread_data *td, struct fio_file *f,
1079 uint64_t blocks)
1080{
1081 if (blocks <= FRAND32_MAX)
1082 return 0;
1083 if (td->o.random_generator != FIO_RAND_GEN_TAUSWORTHE)
1084 return 0;
1085
1086 /*
1087 * If the user hasn't specified a random generator, switch
1088 * to tausworthe64 with informational warning. If the user did
1089 * specify one, just warn.
1090 */
1091 log_info("fio: file %s exceeds 32-bit tausworthe random generator.\n",
1092 f->file_name);
1093
1094 if (!fio_option_is_set(&td->o, random_generator)) {
1095 log_info("fio: Switching to tausworthe64. Use the "
1096 "random_generator= option to get rid of this "
1097 "warning.\n");
1098 td->o.random_generator = FIO_RAND_GEN_TAUSWORTHE64;
1099 return 0;
1100 }
1101
1102 /*
1103 * Just make this information to avoid breaking scripts.
1104 */
1105 log_info("fio: Use the random_generator= option to switch to lfsr or "
1106 "tausworthe64.\n");
1107 return 0;
1108}
1109
1110int init_random_map(struct thread_data *td)
1111{
1112 unsigned long long blocks;
1113 struct fio_file *f;
1114 unsigned int i;
1115
1116 if (init_rand_distribution(td))
1117 return 0;
1118 if (!td_random(td))
1119 return 0;
1120
1121 for_each_file(td, f, i) {
1122 uint64_t fsize = min(f->real_file_size, f->io_size);
1123
1124 blocks = fsize / (unsigned long long) td->o.rw_min_bs;
1125
1126 if (check_rand_gen_limits(td, f, blocks))
1127 return 1;
1128
1129 if (td->o.random_generator == FIO_RAND_GEN_LFSR) {
1130 unsigned long seed;
1131
1132 seed = td->rand_seeds[FIO_RAND_BLOCK_OFF];
1133
1134 if (!lfsr_init(&f->lfsr, blocks, seed, 0)) {
1135 fio_file_set_lfsr(f);
1136 continue;
1137 }
1138 } else if (!td->o.norandommap) {
1139 f->io_axmap = axmap_new(blocks);
1140 if (f->io_axmap) {
1141 fio_file_set_axmap(f);
1142 continue;
1143 }
1144 } else if (td->o.norandommap)
1145 continue;
1146
1147 if (!td->o.softrandommap) {
1148 log_err("fio: failed allocating random map. If running"
1149 " a large number of jobs, try the 'norandommap'"
1150 " option or set 'softrandommap'. Or give"
1151 " a larger --alloc-size to fio.\n");
1152 return 1;
1153 }
1154
1155 log_info("fio: file %s failed allocating random map. Running "
1156 "job without.\n", f->file_name);
1157 }
1158
1159 return 0;
1160}
1161
1162void close_files(struct thread_data *td)
1163{
1164 struct fio_file *f;
1165 unsigned int i;
1166
1167 for_each_file(td, f, i) {
1168 if (fio_file_open(f))
1169 td_io_close_file(td, f);
1170 }
1171}
1172
1173void close_and_free_files(struct thread_data *td)
1174{
1175 struct fio_file *f;
1176 unsigned int i;
1177
1178 dprint(FD_FILE, "close files\n");
1179
1180 for_each_file(td, f, i) {
1181 if (td->o.unlink && f->filetype == FIO_TYPE_FILE) {
1182 dprint(FD_FILE, "free unlink %s\n", f->file_name);
1183 td_io_unlink_file(td, f);
1184 }
1185
1186 if (fio_file_open(f))
1187 td_io_close_file(td, f);
1188
1189 remove_file_hash(f);
1190
1191 if (td->o.unlink && f->filetype == FIO_TYPE_FILE) {
1192 dprint(FD_FILE, "free unlink %s\n", f->file_name);
1193 td_io_unlink_file(td, f);
1194 }
1195
1196 sfree(f->file_name);
1197 f->file_name = NULL;
1198 if (fio_file_axmap(f)) {
1199 axmap_free(f->io_axmap);
1200 f->io_axmap = NULL;
1201 }
1202 sfree(f);
1203 }
1204
1205 td->o.filename = NULL;
1206 free(td->files);
1207 free(td->file_locks);
1208 td->files_index = 0;
1209 td->files = NULL;
1210 td->file_locks = NULL;
1211 td->o.file_lock_mode = FILE_LOCK_NONE;
1212 td->o.nr_files = 0;
1213}
1214
1215static void get_file_type(struct fio_file *f)
1216{
1217 struct stat sb;
1218
1219 if (!strcmp(f->file_name, "-"))
1220 f->filetype = FIO_TYPE_PIPE;
1221 else
1222 f->filetype = FIO_TYPE_FILE;
1223
1224#ifdef WIN32
1225 /* \\.\ is the device namespace in Windows, where every file is
1226 * a block device */
1227 if (strncmp(f->file_name, "\\\\.\\", 4) == 0)
1228 f->filetype = FIO_TYPE_BLOCK;
1229#endif
1230
1231 if (!stat(f->file_name, &sb)) {
1232 if (S_ISBLK(sb.st_mode))
1233 f->filetype = FIO_TYPE_BLOCK;
1234 else if (S_ISCHR(sb.st_mode))
1235 f->filetype = FIO_TYPE_CHAR;
1236 else if (S_ISFIFO(sb.st_mode))
1237 f->filetype = FIO_TYPE_PIPE;
1238 }
1239}
1240
1241static bool __is_already_allocated(const char *fname, bool set)
1242{
1243 struct flist_head *entry;
1244 bool ret;
1245
1246 ret = file_bloom_exists(fname, set);
1247 if (!ret)
1248 return ret;
1249
1250 flist_for_each(entry, &filename_list) {
1251 struct file_name *fn;
1252
1253 fn = flist_entry(entry, struct file_name, list);
1254
1255 if (!strcmp(fn->filename, fname))
1256 return true;
1257 }
1258
1259 return false;
1260}
1261
1262static bool is_already_allocated(const char *fname)
1263{
1264 bool ret;
1265
1266 fio_file_hash_lock();
1267 ret = __is_already_allocated(fname, false);
1268 fio_file_hash_unlock();
1269
1270 return ret;
1271}
1272
1273static void set_already_allocated(const char *fname)
1274{
1275 struct file_name *fn;
1276
1277 fn = malloc(sizeof(struct file_name));
1278 fn->filename = strdup(fname);
1279
1280 fio_file_hash_lock();
1281 if (!__is_already_allocated(fname, true)) {
1282 flist_add_tail(&fn->list, &filename_list);
1283 fn = NULL;
1284 }
1285 fio_file_hash_unlock();
1286
1287 if (fn) {
1288 free(fn->filename);
1289 free(fn);
1290 }
1291}
1292
1293static void free_already_allocated(void)
1294{
1295 struct flist_head *entry, *tmp;
1296 struct file_name *fn;
1297
1298 if (flist_empty(&filename_list))
1299 return;
1300
1301 fio_file_hash_lock();
1302 flist_for_each_safe(entry, tmp, &filename_list) {
1303 fn = flist_entry(entry, struct file_name, list);
1304 free(fn->filename);
1305 flist_del(&fn->list);
1306 free(fn);
1307 }
1308
1309 fio_file_hash_unlock();
1310}
1311
1312static struct fio_file *alloc_new_file(struct thread_data *td)
1313{
1314 struct fio_file *f;
1315
1316 f = smalloc(sizeof(*f));
1317 if (!f) {
1318 assert(0);
1319 return NULL;
1320 }
1321
1322 f->fd = -1;
1323 f->shadow_fd = -1;
1324 fio_file_reset(td, f);
1325 return f;
1326}
1327
1328bool exists_and_not_regfile(const char *filename)
1329{
1330 struct stat sb;
1331
1332 if (lstat(filename, &sb) == -1)
1333 return false;
1334
1335#ifndef WIN32 /* NOT Windows */
1336 if (S_ISREG(sb.st_mode))
1337 return false;
1338#else
1339 /* \\.\ is the device namespace in Windows, where every file
1340 * is a device node */
1341 if (S_ISREG(sb.st_mode) && strncmp(filename, "\\\\.\\", 4) != 0)
1342 return false;
1343#endif
1344
1345 return true;
1346}
1347
1348int add_file(struct thread_data *td, const char *fname, int numjob, int inc)
1349{
1350 int cur_files = td->files_index;
1351 char file_name[PATH_MAX];
1352 struct fio_file *f;
1353 int len = 0;
1354
1355 dprint(FD_FILE, "add file %s\n", fname);
1356
1357 if (td->o.directory)
1358 len = set_name_idx(file_name, PATH_MAX, td->o.directory, numjob,
1359 td->o.unique_filename);
1360
1361 sprintf(file_name + len, "%s", fname);
1362
1363 /* clean cloned siblings using existing files */
1364 if (numjob && is_already_allocated(file_name) &&
1365 !exists_and_not_regfile(fname))
1366 return 0;
1367
1368 f = alloc_new_file(td);
1369
1370 if (td->files_size <= td->files_index) {
1371 unsigned int new_size = td->o.nr_files + 1;
1372
1373 dprint(FD_FILE, "resize file array to %d files\n", new_size);
1374
1375 td->files = realloc(td->files, new_size * sizeof(f));
1376 if (td->files == NULL) {
1377 log_err("fio: realloc OOM\n");
1378 assert(0);
1379 }
1380 if (td->o.file_lock_mode != FILE_LOCK_NONE) {
1381 td->file_locks = realloc(td->file_locks, new_size);
1382 if (!td->file_locks) {
1383 log_err("fio: realloc OOM\n");
1384 assert(0);
1385 }
1386 td->file_locks[cur_files] = FILE_LOCK_NONE;
1387 }
1388 td->files_size = new_size;
1389 }
1390 td->files[cur_files] = f;
1391 f->fileno = cur_files;
1392
1393 /*
1394 * init function, io engine may not be loaded yet
1395 */
1396 if (td->io_ops && td_ioengine_flagged(td, FIO_DISKLESSIO))
1397 f->real_file_size = -1ULL;
1398
1399 f->file_name = smalloc_strdup(file_name);
1400 if (!f->file_name)
1401 assert(0);
1402
1403 get_file_type(f);
1404
1405 switch (td->o.file_lock_mode) {
1406 case FILE_LOCK_NONE:
1407 break;
1408 case FILE_LOCK_READWRITE:
1409 f->rwlock = fio_rwlock_init();
1410 break;
1411 case FILE_LOCK_EXCLUSIVE:
1412 f->lock = fio_mutex_init(FIO_MUTEX_UNLOCKED);
1413 break;
1414 default:
1415 log_err("fio: unknown lock mode: %d\n", td->o.file_lock_mode);
1416 assert(0);
1417 }
1418
1419 td->files_index++;
1420 if (f->filetype == FIO_TYPE_FILE)
1421 td->nr_normal_files++;
1422
1423 set_already_allocated(file_name);
1424
1425 if (inc)
1426 td->o.nr_files++;
1427
1428 dprint(FD_FILE, "file %p \"%s\" added at %d\n", f, f->file_name,
1429 cur_files);
1430
1431 return cur_files;
1432}
1433
1434int add_file_exclusive(struct thread_data *td, const char *fname)
1435{
1436 struct fio_file *f;
1437 unsigned int i;
1438
1439 for_each_file(td, f, i) {
1440 if (!strcmp(f->file_name, fname))
1441 return i;
1442 }
1443
1444 return add_file(td, fname, 0, 1);
1445}
1446
1447void get_file(struct fio_file *f)
1448{
1449 dprint(FD_FILE, "get file %s, ref=%d\n", f->file_name, f->references);
1450 assert(fio_file_open(f));
1451 f->references++;
1452}
1453
1454int put_file(struct thread_data *td, struct fio_file *f)
1455{
1456 int f_ret = 0, ret = 0;
1457
1458 dprint(FD_FILE, "put file %s, ref=%d\n", f->file_name, f->references);
1459
1460 if (!fio_file_open(f)) {
1461 assert(f->fd == -1);
1462 return 0;
1463 }
1464
1465 assert(f->references);
1466 if (--f->references)
1467 return 0;
1468
1469 if (should_fsync(td) && td->o.fsync_on_close) {
1470 f_ret = fsync(f->fd);
1471 if (f_ret < 0)
1472 f_ret = errno;
1473 }
1474
1475 if (td->io_ops->close_file)
1476 ret = td->io_ops->close_file(td, f);
1477
1478 if (!ret)
1479 ret = f_ret;
1480
1481 td->nr_open_files--;
1482 fio_file_clear_open(f);
1483 assert(f->fd == -1);
1484 return ret;
1485}
1486
1487void lock_file(struct thread_data *td, struct fio_file *f, enum fio_ddir ddir)
1488{
1489 if (!f->lock || td->o.file_lock_mode == FILE_LOCK_NONE)
1490 return;
1491
1492 if (td->o.file_lock_mode == FILE_LOCK_READWRITE) {
1493 if (ddir == DDIR_READ)
1494 fio_rwlock_read(f->rwlock);
1495 else
1496 fio_rwlock_write(f->rwlock);
1497 } else if (td->o.file_lock_mode == FILE_LOCK_EXCLUSIVE)
1498 fio_mutex_down(f->lock);
1499
1500 td->file_locks[f->fileno] = td->o.file_lock_mode;
1501}
1502
1503void unlock_file(struct thread_data *td, struct fio_file *f)
1504{
1505 if (!f->lock || td->o.file_lock_mode == FILE_LOCK_NONE)
1506 return;
1507
1508 if (td->o.file_lock_mode == FILE_LOCK_READWRITE)
1509 fio_rwlock_unlock(f->rwlock);
1510 else if (td->o.file_lock_mode == FILE_LOCK_EXCLUSIVE)
1511 fio_mutex_up(f->lock);
1512
1513 td->file_locks[f->fileno] = FILE_LOCK_NONE;
1514}
1515
1516void unlock_file_all(struct thread_data *td, struct fio_file *f)
1517{
1518 if (td->o.file_lock_mode == FILE_LOCK_NONE || !td->file_locks)
1519 return;
1520 if (td->file_locks[f->fileno] != FILE_LOCK_NONE)
1521 unlock_file(td, f);
1522}
1523
1524static int recurse_dir(struct thread_data *td, const char *dirname)
1525{
1526 struct dirent *dir;
1527 int ret = 0;
1528 DIR *D;
1529
1530 D = opendir(dirname);
1531 if (!D) {
1532 char buf[FIO_VERROR_SIZE];
1533
1534 snprintf(buf, FIO_VERROR_SIZE, "opendir(%s)", dirname);
1535 td_verror(td, errno, buf);
1536 return 1;
1537 }
1538
1539 while ((dir = readdir(D)) != NULL) {
1540 char full_path[PATH_MAX];
1541 struct stat sb;
1542
1543 if (!strcmp(dir->d_name, ".") || !strcmp(dir->d_name, ".."))
1544 continue;
1545
1546 sprintf(full_path, "%s%s%s", dirname, FIO_OS_PATH_SEPARATOR, dir->d_name);
1547
1548 if (lstat(full_path, &sb) == -1) {
1549 if (errno != ENOENT) {
1550 td_verror(td, errno, "stat");
1551 ret = 1;
1552 break;
1553 }
1554 }
1555
1556 if (S_ISREG(sb.st_mode)) {
1557 add_file(td, full_path, 0, 1);
1558 continue;
1559 }
1560 if (!S_ISDIR(sb.st_mode))
1561 continue;
1562
1563 ret = recurse_dir(td, full_path);
1564 if (ret)
1565 break;
1566 }
1567
1568 closedir(D);
1569 return ret;
1570}
1571
1572int add_dir_files(struct thread_data *td, const char *path)
1573{
1574 int ret = recurse_dir(td, path);
1575
1576 if (!ret)
1577 log_info("fio: opendir added %d files\n", td->o.nr_files);
1578
1579 return ret;
1580}
1581
1582void dup_files(struct thread_data *td, struct thread_data *org)
1583{
1584 struct fio_file *f;
1585 unsigned int i;
1586
1587 dprint(FD_FILE, "dup files: %d\n", org->files_index);
1588
1589 if (!org->files)
1590 return;
1591
1592 td->files = malloc(org->files_index * sizeof(f));
1593
1594 if (td->o.file_lock_mode != FILE_LOCK_NONE)
1595 td->file_locks = malloc(org->files_index);
1596
1597 for_each_file(org, f, i) {
1598 struct fio_file *__f;
1599
1600 __f = alloc_new_file(td);
1601
1602 if (f->file_name) {
1603 __f->file_name = smalloc_strdup(f->file_name);
1604 if (!__f->file_name)
1605 assert(0);
1606
1607 __f->filetype = f->filetype;
1608 }
1609
1610 if (td->o.file_lock_mode == FILE_LOCK_EXCLUSIVE)
1611 __f->lock = f->lock;
1612 else if (td->o.file_lock_mode == FILE_LOCK_READWRITE)
1613 __f->rwlock = f->rwlock;
1614
1615 td->files[i] = __f;
1616 }
1617}
1618
1619/*
1620 * Returns the index that matches the filename, or -1 if not there
1621 */
1622int get_fileno(struct thread_data *td, const char *fname)
1623{
1624 struct fio_file *f;
1625 unsigned int i;
1626
1627 for_each_file(td, f, i)
1628 if (!strcmp(f->file_name, fname))
1629 return i;
1630
1631 return -1;
1632}
1633
1634/*
1635 * For log usage, where we add/open/close files automatically
1636 */
1637void free_release_files(struct thread_data *td)
1638{
1639 close_files(td);
1640 td->o.nr_files = 0;
1641 td->o.open_files = 0;
1642 td->files_index = 0;
1643 td->nr_normal_files = 0;
1644}
1645
1646void fio_file_reset(struct thread_data *td, struct fio_file *f)
1647{
1648 int i;
1649
1650 for (i = 0; i < DDIR_RWDIR_CNT; i++) {
1651 f->last_pos[i] = f->file_offset;
1652 f->last_start[i] = -1ULL;
1653 }
1654
1655 if (fio_file_axmap(f))
1656 axmap_reset(f->io_axmap);
1657 else if (fio_file_lfsr(f))
1658 lfsr_reset(&f->lfsr, td->rand_seeds[FIO_RAND_BLOCK_OFF]);
1659}
1660
1661bool fio_files_done(struct thread_data *td)
1662{
1663 struct fio_file *f;
1664 unsigned int i;
1665
1666 for_each_file(td, f, i)
1667 if (!fio_file_done(f))
1668 return false;
1669
1670 return true;
1671}
1672
1673/* free memory used in initialization phase only */
1674void filesetup_mem_free(void)
1675{
1676 free_already_allocated();
1677}
fio - Flexible IO Tester