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init: re-call sinit() if we change the smallc pool size
[fio.git] / filesetup.c
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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_BD)
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_BD) {
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 /*
502 * racy, need the __f->lock locked
503 */
504 f->lock = __f->lock;
505 from_hash = 1;
506 } else {
507 dprint(FD_FILE, "file not found in hash %s\n", f->file_name);
508 from_hash = 0;
509 }
510
511#ifdef WIN32
512 flags |= _O_BINARY;
513#endif
514
515 f->fd = open(f->file_name, flags, 0600);
516 return from_hash;
517}
518
519static int file_close_shadow_fds(struct thread_data *td)
520{
521 struct fio_file *f;
522 int num_closed = 0;
523 unsigned int i;
524
525 for_each_file(td, f, i) {
526 if (f->shadow_fd == -1)
527 continue;
528
529 close(f->shadow_fd);
530 f->shadow_fd = -1;
531 num_closed++;
532 }
533
534 return num_closed;
535}
536
537int generic_open_file(struct thread_data *td, struct fio_file *f)
538{
539 int is_std = 0;
540 int flags = 0;
541 int from_hash = 0;
542
543 dprint(FD_FILE, "fd open %s\n", f->file_name);
544
545 if (!strcmp(f->file_name, "-")) {
546 if (td_rw(td)) {
547 log_err("fio: can't read/write to stdin/out\n");
548 return 1;
549 }
550 is_std = 1;
551
552 /*
553 * move output logging to stderr, if we are writing to stdout
554 */
555 if (td_write(td))
556 f_out = stderr;
557 }
558
559 if (td_trim(td))
560 goto skip_flags;
561 if (td->o.odirect)
562 flags |= OS_O_DIRECT;
563 if (td->o.oatomic) {
564 if (!FIO_O_ATOMIC) {
565 td_verror(td, EINVAL, "OS does not support atomic IO");
566 return 1;
567 }
568 flags |= OS_O_DIRECT | FIO_O_ATOMIC;
569 }
570 if (td->o.sync_io)
571 flags |= O_SYNC;
572 if (td->o.create_on_open && td->o.allow_create)
573 flags |= O_CREAT;
574skip_flags:
575 if (f->filetype != FIO_TYPE_FILE)
576 flags |= FIO_O_NOATIME;
577
578open_again:
579 if (td_write(td)) {
580 if (!read_only)
581 flags |= O_RDWR;
582
583 if (f->filetype == FIO_TYPE_FILE && td->o.allow_create)
584 flags |= O_CREAT;
585
586 if (is_std)
587 f->fd = dup(STDOUT_FILENO);
588 else
589 from_hash = file_lookup_open(f, flags);
590 } else if (td_read(td)) {
591 if (f->filetype == FIO_TYPE_CHAR && !read_only)
592 flags |= O_RDWR;
593 else
594 flags |= O_RDONLY;
595
596 if (is_std)
597 f->fd = dup(STDIN_FILENO);
598 else
599 from_hash = file_lookup_open(f, flags);
600 } else { //td trim
601 flags |= O_RDWR;
602 from_hash = file_lookup_open(f, flags);
603 }
604
605 if (f->fd == -1) {
606 char buf[FIO_VERROR_SIZE];
607 int __e = errno;
608
609 if (__e == EPERM && (flags & FIO_O_NOATIME)) {
610 flags &= ~FIO_O_NOATIME;
611 goto open_again;
612 }
613 if (__e == EMFILE && file_close_shadow_fds(td))
614 goto open_again;
615
616 snprintf(buf, sizeof(buf), "open(%s)", f->file_name);
617
618 if (__e == EINVAL && (flags & OS_O_DIRECT)) {
619 log_err("fio: looks like your file system does not " \
620 "support direct=1/buffered=0\n");
621 }
622
623 td_verror(td, __e, buf);
624 return 1;
625 }
626
627 if (!from_hash && f->fd != -1) {
628 if (add_file_hash(f)) {
629 int fio_unused ret;
630
631 /*
632 * Stash away descriptor for later close. This is to
633 * work-around a "feature" on Linux, where a close of
634 * an fd that has been opened for write will trigger
635 * udev to call blkid to check partitions, fs id, etc.
636 * That pollutes the device cache, which can slow down
637 * unbuffered accesses.
638 */
639 if (f->shadow_fd == -1)
640 f->shadow_fd = f->fd;
641 else {
642 /*
643 * OK to ignore, we haven't done anything
644 * with it
645 */
646 ret = generic_close_file(td, f);
647 }
648 goto open_again;
649 }
650 }
651
652 return 0;
653}
654
655int generic_get_file_size(struct thread_data *td, struct fio_file *f)
656{
657 return get_file_size(td, f);
658}
659
660/*
661 * open/close all files, so that ->real_file_size gets set
662 */
663static int get_file_sizes(struct thread_data *td)
664{
665 struct fio_file *f;
666 unsigned int i;
667 int err = 0;
668
669 for_each_file(td, f, i) {
670 dprint(FD_FILE, "get file size for %p/%d/%p\n", f, i,
671 f->file_name);
672
673 if (td_io_get_file_size(td, f)) {
674 if (td->error != ENOENT) {
675 log_err("%s\n", td->verror);
676 err = 1;
677 break;
678 }
679 clear_error(td);
680 }
681
682 if (f->real_file_size == -1ULL && td->o.size)
683 f->real_file_size = td->o.size / td->o.nr_files;
684 }
685
686 return err;
687}
688
689struct fio_mount {
690 struct flist_head list;
691 const char *base;
692 char __base[256];
693 unsigned int key;
694};
695
696/*
697 * Get free number of bytes for each file on each unique mount.
698 */
699static unsigned long long get_fs_free_counts(struct thread_data *td)
700{
701 struct flist_head *n, *tmp;
702 unsigned long long ret = 0;
703 struct fio_mount *fm;
704 FLIST_HEAD(list);
705 struct fio_file *f;
706 unsigned int i;
707
708 for_each_file(td, f, i) {
709 struct stat sb;
710 char buf[256];
711
712 if (f->filetype == FIO_TYPE_BD || f->filetype == FIO_TYPE_CHAR) {
713 if (f->real_file_size != -1ULL)
714 ret += f->real_file_size;
715 continue;
716 } else if (f->filetype != FIO_TYPE_FILE)
717 continue;
718
719 buf[255] = '\0';
720 strncpy(buf, f->file_name, 255);
721
722 if (stat(buf, &sb) < 0) {
723 if (errno != ENOENT)
724 break;
725 strcpy(buf, ".");
726 if (stat(buf, &sb) < 0)
727 break;
728 }
729
730 fm = NULL;
731 flist_for_each(n, &list) {
732 fm = flist_entry(n, struct fio_mount, list);
733 if (fm->key == sb.st_dev)
734 break;
735
736 fm = NULL;
737 }
738
739 if (fm)
740 continue;
741
742 fm = calloc(1, sizeof(*fm));
743 strncpy(fm->__base, buf, sizeof(fm->__base) - 1);
744 fm->base = basename(fm->__base);
745 fm->key = sb.st_dev;
746 flist_add(&fm->list, &list);
747 }
748
749 flist_for_each_safe(n, tmp, &list) {
750 unsigned long long sz;
751
752 fm = flist_entry(n, struct fio_mount, list);
753 flist_del(&fm->list);
754
755 sz = get_fs_free_size(fm->base);
756 if (sz && sz != -1ULL)
757 ret += sz;
758
759 free(fm);
760 }
761
762 return ret;
763}
764
765uint64_t get_start_offset(struct thread_data *td, struct fio_file *f)
766{
767 struct thread_options *o = &td->o;
768
769 if (o->file_append && f->filetype == FIO_TYPE_FILE)
770 return f->real_file_size;
771
772 return td->o.start_offset +
773 td->subjob_number * td->o.offset_increment;
774}
775
776/*
777 * Open the files and setup files sizes, creating files if necessary.
778 */
779int setup_files(struct thread_data *td)
780{
781 unsigned long long total_size, extend_size;
782 struct thread_options *o = &td->o;
783 struct fio_file *f;
784 unsigned int i, nr_fs_extra = 0;
785 int err = 0, need_extend;
786 int old_state;
787 const unsigned int bs = td_min_bs(td);
788 uint64_t fs = 0;
789
790 dprint(FD_FILE, "setup files\n");
791
792 old_state = td_bump_runstate(td, TD_SETTING_UP);
793
794 if (o->read_iolog_file)
795 goto done;
796
797 /*
798 * if ioengine defines a setup() method, it's responsible for
799 * opening the files and setting f->real_file_size to indicate
800 * the valid range for that file.
801 */
802 if (td->io_ops->setup)
803 err = td->io_ops->setup(td);
804 else
805 err = get_file_sizes(td);
806
807 if (err)
808 goto err_out;
809
810 /*
811 * check sizes. if the files/devices do not exist and the size
812 * isn't passed to fio, abort.
813 */
814 total_size = 0;
815 for_each_file(td, f, i) {
816 f->fileno = i;
817 if (f->real_file_size == -1ULL)
818 total_size = -1ULL;
819 else
820 total_size += f->real_file_size;
821 }
822
823 if (o->fill_device)
824 td->fill_device_size = get_fs_free_counts(td);
825
826 /*
827 * device/file sizes are zero and no size given, punt
828 */
829 if ((!total_size || total_size == -1ULL) && !o->size &&
830 !td_ioengine_flagged(td, FIO_NOIO) && !o->fill_device &&
831 !(o->nr_files && (o->file_size_low || o->file_size_high))) {
832 log_err("%s: you need to specify size=\n", o->name);
833 td_verror(td, EINVAL, "total_file_size");
834 goto err_out;
835 }
836
837 /*
838 * Calculate per-file size and potential extra size for the
839 * first files, if needed.
840 */
841 if (!o->file_size_low && o->nr_files) {
842 uint64_t all_fs;
843
844 fs = o->size / o->nr_files;
845 all_fs = fs * o->nr_files;
846
847 if (all_fs < o->size)
848 nr_fs_extra = (o->size - all_fs) / bs;
849 }
850
851 /*
852 * now file sizes are known, so we can set ->io_size. if size= is
853 * not given, ->io_size is just equal to ->real_file_size. if size
854 * is given, ->io_size is size / nr_files.
855 */
856 extend_size = total_size = 0;
857 need_extend = 0;
858 for_each_file(td, f, i) {
859 f->file_offset = get_start_offset(td, f);
860
861 if (!o->file_size_low) {
862 /*
863 * no file size range given, file size is equal to
864 * total size divided by number of files. If that is
865 * zero, set it to the real file size. If the size
866 * doesn't divide nicely with the min blocksize,
867 * make the first files bigger.
868 */
869 f->io_size = fs;
870 if (nr_fs_extra) {
871 nr_fs_extra--;
872 f->io_size += bs;
873 }
874
875 if (!f->io_size)
876 f->io_size = f->real_file_size - f->file_offset;
877 } else if (f->real_file_size < o->file_size_low ||
878 f->real_file_size > o->file_size_high) {
879 if (f->file_offset > o->file_size_low)
880 goto err_offset;
881 /*
882 * file size given. if it's fixed, use that. if it's a
883 * range, generate a random size in-between.
884 */
885 if (o->file_size_low == o->file_size_high)
886 f->io_size = o->file_size_low - f->file_offset;
887 else {
888 f->io_size = get_rand_file_size(td)
889 - f->file_offset;
890 }
891 } else
892 f->io_size = f->real_file_size - f->file_offset;
893
894 if (f->io_size == -1ULL)
895 total_size = -1ULL;
896 else {
897 if (o->size_percent) {
898 f->io_size = (f->io_size * o->size_percent) / 100;
899 f->io_size -= (f->io_size % td_min_bs(td));
900 }
901 total_size += f->io_size;
902 }
903
904 if (f->filetype == FIO_TYPE_FILE &&
905 (f->io_size + f->file_offset) > f->real_file_size &&
906 !td_ioengine_flagged(td, FIO_DISKLESSIO)) {
907 if (!o->create_on_open) {
908 need_extend++;
909 extend_size += (f->io_size + f->file_offset);
910 } else
911 f->real_file_size = f->io_size + f->file_offset;
912 fio_file_set_extend(f);
913 }
914 }
915
916 if (td->o.block_error_hist) {
917 int len;
918
919 assert(td->o.nr_files == 1); /* checked in fixup_options */
920 f = td->files[0];
921 len = f->io_size / td->o.bs[DDIR_TRIM];
922 if (len > MAX_NR_BLOCK_INFOS || len <= 0) {
923 log_err("fio: cannot calculate block histogram with "
924 "%d trim blocks, maximum %d\n",
925 len, MAX_NR_BLOCK_INFOS);
926 td_verror(td, EINVAL, "block_error_hist");
927 goto err_out;
928 }
929
930 td->ts.nr_block_infos = len;
931 for (i = 0; i < len; i++)
932 td->ts.block_infos[i] =
933 BLOCK_INFO(0, BLOCK_STATE_UNINIT);
934 } else
935 td->ts.nr_block_infos = 0;
936
937 if (!o->size || (total_size && o->size > total_size))
938 o->size = total_size;
939
940 if (o->size < td_min_bs(td)) {
941 log_err("fio: blocksize too large for data set\n");
942 goto err_out;
943 }
944
945 /*
946 * See if we need to extend some files
947 */
948 if (need_extend) {
949 temp_stall_ts = 1;
950 if (output_format & FIO_OUTPUT_NORMAL)
951 log_info("%s: Laying out IO file(s) (%u file(s) /"
952 " %lluMB)\n", o->name, need_extend,
953 extend_size >> 20);
954
955 for_each_file(td, f, i) {
956 unsigned long long old_len = -1ULL, extend_len = -1ULL;
957
958 if (!fio_file_extend(f))
959 continue;
960
961 assert(f->filetype == FIO_TYPE_FILE);
962 fio_file_clear_extend(f);
963 if (!o->fill_device) {
964 old_len = f->real_file_size;
965 extend_len = f->io_size + f->file_offset -
966 old_len;
967 }
968 f->real_file_size = (f->io_size + f->file_offset);
969 err = extend_file(td, f);
970 if (err)
971 break;
972
973 err = __file_invalidate_cache(td, f, old_len,
974 extend_len);
975
976 /*
977 * Shut up static checker
978 */
979 if (f->fd != -1)
980 close(f->fd);
981
982 f->fd = -1;
983 if (err)
984 break;
985 }
986 temp_stall_ts = 0;
987 }
988
989 if (err)
990 goto err_out;
991
992 if (!o->zone_size)
993 o->zone_size = o->size;
994
995 /*
996 * iolog already set the total io size, if we read back
997 * stored entries.
998 */
999 if (!o->read_iolog_file) {
1000 if (o->io_limit)
1001 td->total_io_size = o->io_limit * o->loops;
1002 else
1003 td->total_io_size = o->size * o->loops;
1004 }
1005
1006done:
1007 if (o->create_only)
1008 td->done = 1;
1009
1010 td_restore_runstate(td, old_state);
1011 return 0;
1012err_offset:
1013 log_err("%s: you need to specify valid offset=\n", o->name);
1014err_out:
1015 td_restore_runstate(td, old_state);
1016 return 1;
1017}
1018
1019int pre_read_files(struct thread_data *td)
1020{
1021 struct fio_file *f;
1022 unsigned int i;
1023
1024 dprint(FD_FILE, "pre_read files\n");
1025
1026 for_each_file(td, f, i) {
1027 pre_read_file(td, f);
1028 }
1029
1030 return 1;
1031}
1032
1033static int __init_rand_distribution(struct thread_data *td, struct fio_file *f)
1034{
1035 unsigned int range_size, seed;
1036 unsigned long nranges;
1037 uint64_t fsize;
1038
1039 range_size = min(td->o.min_bs[DDIR_READ], td->o.min_bs[DDIR_WRITE]);
1040 fsize = min(f->real_file_size, f->io_size);
1041
1042 nranges = (fsize + range_size - 1) / range_size;
1043
1044 seed = jhash(f->file_name, strlen(f->file_name), 0) * td->thread_number;
1045 if (!td->o.rand_repeatable)
1046 seed = td->rand_seeds[4];
1047
1048 if (td->o.random_distribution == FIO_RAND_DIST_ZIPF)
1049 zipf_init(&f->zipf, nranges, td->o.zipf_theta.u.f, seed);
1050 else if (td->o.random_distribution == FIO_RAND_DIST_PARETO)
1051 pareto_init(&f->zipf, nranges, td->o.pareto_h.u.f, seed);
1052 else if (td->o.random_distribution == FIO_RAND_DIST_GAUSS)
1053 gauss_init(&f->gauss, nranges, td->o.gauss_dev.u.f, seed);
1054
1055 return 1;
1056}
1057
1058static int init_rand_distribution(struct thread_data *td)
1059{
1060 struct fio_file *f;
1061 unsigned int i;
1062 int state;
1063
1064 if (td->o.random_distribution == FIO_RAND_DIST_RANDOM)
1065 return 0;
1066
1067 state = td_bump_runstate(td, TD_SETTING_UP);
1068
1069 for_each_file(td, f, i)
1070 __init_rand_distribution(td, f);
1071
1072 td_restore_runstate(td, state);
1073
1074 return 1;
1075}
1076
1077/*
1078 * Check if the number of blocks exceeds the randomness capability of
1079 * the selected generator. Tausworthe is 32-bit, the others are fullly
1080 * 64-bit capable.
1081 */
1082static int check_rand_gen_limits(struct thread_data *td, struct fio_file *f,
1083 uint64_t blocks)
1084{
1085 if (blocks <= FRAND32_MAX)
1086 return 0;
1087 if (td->o.random_generator != FIO_RAND_GEN_TAUSWORTHE)
1088 return 0;
1089
1090 /*
1091 * If the user hasn't specified a random generator, switch
1092 * to tausworthe64 with informational warning. If the user did
1093 * specify one, just warn.
1094 */
1095 log_info("fio: file %s exceeds 32-bit tausworthe random generator.\n",
1096 f->file_name);
1097
1098 if (!fio_option_is_set(&td->o, random_generator)) {
1099 log_info("fio: Switching to tausworthe64. Use the "
1100 "random_generator= option to get rid of this "
1101 " warning.\n");
1102 td->o.random_generator = FIO_RAND_GEN_TAUSWORTHE64;
1103 return 0;
1104 }
1105
1106 /*
1107 * Just make this information to avoid breaking scripts.
1108 */
1109 log_info("fio: Use the random_generator= option to switch to lfsr or "
1110 "tausworthe64.\n");
1111 return 0;
1112}
1113
1114int init_random_map(struct thread_data *td)
1115{
1116 unsigned long long blocks;
1117 struct fio_file *f;
1118 unsigned int i;
1119
1120 if (init_rand_distribution(td))
1121 return 0;
1122 if (!td_random(td))
1123 return 0;
1124
1125 for_each_file(td, f, i) {
1126 uint64_t fsize = min(f->real_file_size, f->io_size);
1127
1128 blocks = fsize / (unsigned long long) td->o.rw_min_bs;
1129
1130 if (check_rand_gen_limits(td, f, blocks))
1131 return 1;
1132
1133 if (td->o.random_generator == FIO_RAND_GEN_LFSR) {
1134 unsigned long seed;
1135
1136 seed = td->rand_seeds[FIO_RAND_BLOCK_OFF];
1137
1138 if (!lfsr_init(&f->lfsr, blocks, seed, 0)) {
1139 fio_file_set_lfsr(f);
1140 continue;
1141 }
1142 } else if (!td->o.norandommap) {
1143 f->io_axmap = axmap_new(blocks);
1144 if (f->io_axmap) {
1145 fio_file_set_axmap(f);
1146 continue;
1147 }
1148 } else if (td->o.norandommap)
1149 continue;
1150
1151 if (!td->o.softrandommap) {
1152 log_err("fio: failed allocating random map. If running"
1153 " a large number of jobs, try the 'norandommap'"
1154 " option or set 'softrandommap'. Or give"
1155 " a larger --alloc-size to fio.\n");
1156 return 1;
1157 }
1158
1159 log_info("fio: file %s failed allocating random map. Running "
1160 "job without.\n", f->file_name);
1161 }
1162
1163 return 0;
1164}
1165
1166void close_files(struct thread_data *td)
1167{
1168 struct fio_file *f;
1169 unsigned int i;
1170
1171 for_each_file(td, f, i) {
1172 if (fio_file_open(f))
1173 td_io_close_file(td, f);
1174 }
1175}
1176
1177void close_and_free_files(struct thread_data *td)
1178{
1179 struct fio_file *f;
1180 unsigned int i;
1181
1182 dprint(FD_FILE, "close files\n");
1183
1184 for_each_file(td, f, i) {
1185 if (td->o.unlink && f->filetype == FIO_TYPE_FILE) {
1186 dprint(FD_FILE, "free unlink %s\n", f->file_name);
1187 td_io_unlink_file(td, f);
1188 }
1189
1190 if (fio_file_open(f))
1191 td_io_close_file(td, f);
1192
1193 remove_file_hash(f);
1194
1195 if (td->o.unlink && f->filetype == FIO_TYPE_FILE) {
1196 dprint(FD_FILE, "free unlink %s\n", f->file_name);
1197 td_io_unlink_file(td, f);
1198 }
1199
1200 sfree(f->file_name);
1201 f->file_name = NULL;
1202 if (fio_file_axmap(f)) {
1203 axmap_free(f->io_axmap);
1204 f->io_axmap = NULL;
1205 }
1206 sfree(f);
1207 }
1208
1209 td->o.filename = NULL;
1210 free(td->files);
1211 free(td->file_locks);
1212 td->files_index = 0;
1213 td->files = NULL;
1214 td->file_locks = NULL;
1215 td->o.file_lock_mode = FILE_LOCK_NONE;
1216 td->o.nr_files = 0;
1217}
1218
1219static void get_file_type(struct fio_file *f)
1220{
1221 struct stat sb;
1222
1223 if (!strcmp(f->file_name, "-"))
1224 f->filetype = FIO_TYPE_PIPE;
1225 else
1226 f->filetype = FIO_TYPE_FILE;
1227
1228#ifdef WIN32
1229 /* \\.\ is the device namespace in Windows, where every file is
1230 * a block device */
1231 if (strncmp(f->file_name, "\\\\.\\", 4) == 0)
1232 f->filetype = FIO_TYPE_BD;
1233#endif
1234
1235 if (!stat(f->file_name, &sb)) {
1236 if (S_ISBLK(sb.st_mode))
1237 f->filetype = FIO_TYPE_BD;
1238 else if (S_ISCHR(sb.st_mode))
1239 f->filetype = FIO_TYPE_CHAR;
1240 else if (S_ISFIFO(sb.st_mode))
1241 f->filetype = FIO_TYPE_PIPE;
1242 }
1243}
1244
1245static bool __is_already_allocated(const char *fname)
1246{
1247 struct flist_head *entry;
1248
1249 if (flist_empty(&filename_list))
1250 return false;
1251
1252 flist_for_each(entry, &filename_list) {
1253 struct file_name *fn;
1254
1255 fn = flist_entry(entry, struct file_name, list);
1256
1257 if (!strcmp(fn->filename, fname))
1258 return true;
1259 }
1260
1261 return false;
1262}
1263
1264static bool is_already_allocated(const char *fname)
1265{
1266 bool ret;
1267
1268 fio_file_hash_lock();
1269 ret = __is_already_allocated(fname);
1270 fio_file_hash_unlock();
1271
1272 return ret;
1273}
1274
1275static void set_already_allocated(const char *fname)
1276{
1277 struct file_name *fn;
1278
1279 fn = malloc(sizeof(struct file_name));
1280 fn->filename = strdup(fname);
1281
1282 fio_file_hash_lock();
1283 if (!__is_already_allocated(fname)) {
1284 flist_add_tail(&fn->list, &filename_list);
1285 fn = NULL;
1286 }
1287 fio_file_hash_unlock();
1288
1289 if (fn) {
1290 free(fn->filename);
1291 free(fn);
1292 }
1293}
1294
1295static void free_already_allocated(void)
1296{
1297 struct flist_head *entry, *tmp;
1298 struct file_name *fn;
1299
1300 if (flist_empty(&filename_list))
1301 return;
1302
1303 fio_file_hash_lock();
1304 flist_for_each_safe(entry, tmp, &filename_list) {
1305 fn = flist_entry(entry, struct file_name, list);
1306 free(fn->filename);
1307 flist_del(&fn->list);
1308 free(fn);
1309 }
1310
1311 fio_file_hash_unlock();
1312}
1313
1314static struct fio_file *alloc_new_file(struct thread_data *td)
1315{
1316 struct fio_file *f;
1317
1318 f = smalloc(sizeof(*f));
1319 if (!f) {
1320 log_err("fio: smalloc OOM\n");
1321 assert(0);
1322 return NULL;
1323 }
1324
1325 f->fd = -1;
1326 f->shadow_fd = -1;
1327 fio_file_reset(td, f);
1328 return f;
1329}
1330
1331bool exists_and_not_regfile(const char *filename)
1332{
1333 struct stat sb;
1334
1335 if (lstat(filename, &sb) == -1)
1336 return false;
1337
1338#ifndef WIN32 /* NOT Windows */
1339 if (S_ISREG(sb.st_mode))
1340 return false;
1341#else
1342 /* \\.\ is the device namespace in Windows, where every file
1343 * is a device node */
1344 if (S_ISREG(sb.st_mode) && strncmp(filename, "\\\\.\\", 4) != 0)
1345 return false;
1346#endif
1347
1348 return true;
1349}
1350
1351int add_file(struct thread_data *td, const char *fname, int numjob, int inc)
1352{
1353 int cur_files = td->files_index;
1354 char file_name[PATH_MAX];
1355 struct fio_file *f;
1356 int len = 0;
1357
1358 dprint(FD_FILE, "add file %s\n", fname);
1359
1360 if (td->o.directory)
1361 len = set_name_idx(file_name, PATH_MAX, td->o.directory, numjob,
1362 td->o.unique_filename);
1363
1364 sprintf(file_name + len, "%s", fname);
1365
1366 /* clean cloned siblings using existing files */
1367 if (numjob && is_already_allocated(file_name) &&
1368 !exists_and_not_regfile(fname))
1369 return 0;
1370
1371 f = alloc_new_file(td);
1372
1373 if (td->files_size <= td->files_index) {
1374 unsigned int new_size = td->o.nr_files + 1;
1375
1376 dprint(FD_FILE, "resize file array to %d files\n", new_size);
1377
1378 td->files = realloc(td->files, new_size * sizeof(f));
1379 if (td->files == NULL) {
1380 log_err("fio: realloc OOM\n");
1381 assert(0);
1382 }
1383 if (td->o.file_lock_mode != FILE_LOCK_NONE) {
1384 td->file_locks = realloc(td->file_locks, new_size);
1385 if (!td->file_locks) {
1386 log_err("fio: realloc OOM\n");
1387 assert(0);
1388 }
1389 td->file_locks[cur_files] = FILE_LOCK_NONE;
1390 }
1391 td->files_size = new_size;
1392 }
1393 td->files[cur_files] = f;
1394 f->fileno = cur_files;
1395
1396 /*
1397 * init function, io engine may not be loaded yet
1398 */
1399 if (td->io_ops && td_ioengine_flagged(td, FIO_DISKLESSIO))
1400 f->real_file_size = -1ULL;
1401
1402 f->file_name = smalloc_strdup(file_name);
1403 if (!f->file_name) {
1404 log_err("fio: smalloc OOM\n");
1405 assert(0);
1406 }
1407
1408 get_file_type(f);
1409
1410 switch (td->o.file_lock_mode) {
1411 case FILE_LOCK_NONE:
1412 break;
1413 case FILE_LOCK_READWRITE:
1414 f->rwlock = fio_rwlock_init();
1415 break;
1416 case FILE_LOCK_EXCLUSIVE:
1417 f->lock = fio_mutex_init(FIO_MUTEX_UNLOCKED);
1418 break;
1419 default:
1420 log_err("fio: unknown lock mode: %d\n", td->o.file_lock_mode);
1421 assert(0);
1422 }
1423
1424 td->files_index++;
1425 if (f->filetype == FIO_TYPE_FILE)
1426 td->nr_normal_files++;
1427
1428 set_already_allocated(file_name);
1429
1430 if (inc)
1431 td->o.nr_files++;
1432
1433 dprint(FD_FILE, "file %p \"%s\" added at %d\n", f, f->file_name,
1434 cur_files);
1435
1436 return cur_files;
1437}
1438
1439int add_file_exclusive(struct thread_data *td, const char *fname)
1440{
1441 struct fio_file *f;
1442 unsigned int i;
1443
1444 for_each_file(td, f, i) {
1445 if (!strcmp(f->file_name, fname))
1446 return i;
1447 }
1448
1449 return add_file(td, fname, 0, 1);
1450}
1451
1452void get_file(struct fio_file *f)
1453{
1454 dprint(FD_FILE, "get file %s, ref=%d\n", f->file_name, f->references);
1455 assert(fio_file_open(f));
1456 f->references++;
1457}
1458
1459int put_file(struct thread_data *td, struct fio_file *f)
1460{
1461 int f_ret = 0, ret = 0;
1462
1463 dprint(FD_FILE, "put file %s, ref=%d\n", f->file_name, f->references);
1464
1465 if (!fio_file_open(f)) {
1466 assert(f->fd == -1);
1467 return 0;
1468 }
1469
1470 assert(f->references);
1471 if (--f->references)
1472 return 0;
1473
1474 if (should_fsync(td) && td->o.fsync_on_close) {
1475 f_ret = fsync(f->fd);
1476 if (f_ret < 0)
1477 f_ret = errno;
1478 }
1479
1480 if (td->io_ops->close_file)
1481 ret = td->io_ops->close_file(td, f);
1482
1483 if (!ret)
1484 ret = f_ret;
1485
1486 td->nr_open_files--;
1487 fio_file_clear_open(f);
1488 assert(f->fd == -1);
1489 return ret;
1490}
1491
1492void lock_file(struct thread_data *td, struct fio_file *f, enum fio_ddir ddir)
1493{
1494 if (!f->lock || td->o.file_lock_mode == FILE_LOCK_NONE)
1495 return;
1496
1497 if (td->o.file_lock_mode == FILE_LOCK_READWRITE) {
1498 if (ddir == DDIR_READ)
1499 fio_rwlock_read(f->rwlock);
1500 else
1501 fio_rwlock_write(f->rwlock);
1502 } else if (td->o.file_lock_mode == FILE_LOCK_EXCLUSIVE)
1503 fio_mutex_down(f->lock);
1504
1505 td->file_locks[f->fileno] = td->o.file_lock_mode;
1506}
1507
1508void unlock_file(struct thread_data *td, struct fio_file *f)
1509{
1510 if (!f->lock || td->o.file_lock_mode == FILE_LOCK_NONE)
1511 return;
1512
1513 if (td->o.file_lock_mode == FILE_LOCK_READWRITE)
1514 fio_rwlock_unlock(f->rwlock);
1515 else if (td->o.file_lock_mode == FILE_LOCK_EXCLUSIVE)
1516 fio_mutex_up(f->lock);
1517
1518 td->file_locks[f->fileno] = FILE_LOCK_NONE;
1519}
1520
1521void unlock_file_all(struct thread_data *td, struct fio_file *f)
1522{
1523 if (td->o.file_lock_mode == FILE_LOCK_NONE || !td->file_locks)
1524 return;
1525 if (td->file_locks[f->fileno] != FILE_LOCK_NONE)
1526 unlock_file(td, f);
1527}
1528
1529static int recurse_dir(struct thread_data *td, const char *dirname)
1530{
1531 struct dirent *dir;
1532 int ret = 0;
1533 DIR *D;
1534
1535 D = opendir(dirname);
1536 if (!D) {
1537 char buf[FIO_VERROR_SIZE];
1538
1539 snprintf(buf, FIO_VERROR_SIZE, "opendir(%s)", dirname);
1540 td_verror(td, errno, buf);
1541 return 1;
1542 }
1543
1544 while ((dir = readdir(D)) != NULL) {
1545 char full_path[PATH_MAX];
1546 struct stat sb;
1547
1548 if (!strcmp(dir->d_name, ".") || !strcmp(dir->d_name, ".."))
1549 continue;
1550
1551 sprintf(full_path, "%s%s%s", dirname, FIO_OS_PATH_SEPARATOR, dir->d_name);
1552
1553 if (lstat(full_path, &sb) == -1) {
1554 if (errno != ENOENT) {
1555 td_verror(td, errno, "stat");
1556 ret = 1;
1557 break;
1558 }
1559 }
1560
1561 if (S_ISREG(sb.st_mode)) {
1562 add_file(td, full_path, 0, 1);
1563 continue;
1564 }
1565 if (!S_ISDIR(sb.st_mode))
1566 continue;
1567
1568 ret = recurse_dir(td, full_path);
1569 if (ret)
1570 break;
1571 }
1572
1573 closedir(D);
1574 return ret;
1575}
1576
1577int add_dir_files(struct thread_data *td, const char *path)
1578{
1579 int ret = recurse_dir(td, path);
1580
1581 if (!ret)
1582 log_info("fio: opendir added %d files\n", td->o.nr_files);
1583
1584 return ret;
1585}
1586
1587void dup_files(struct thread_data *td, struct thread_data *org)
1588{
1589 struct fio_file *f;
1590 unsigned int i;
1591
1592 dprint(FD_FILE, "dup files: %d\n", org->files_index);
1593
1594 if (!org->files)
1595 return;
1596
1597 td->files = malloc(org->files_index * sizeof(f));
1598
1599 if (td->o.file_lock_mode != FILE_LOCK_NONE)
1600 td->file_locks = malloc(org->files_index);
1601
1602 for_each_file(org, f, i) {
1603 struct fio_file *__f;
1604
1605 __f = alloc_new_file(td);
1606
1607 if (f->file_name) {
1608 __f->file_name = smalloc_strdup(f->file_name);
1609 if (!__f->file_name) {
1610 log_err("fio: smalloc OOM\n");
1611 assert(0);
1612 }
1613
1614 __f->filetype = f->filetype;
1615 }
1616
1617 if (td->o.file_lock_mode == FILE_LOCK_EXCLUSIVE)
1618 __f->lock = f->lock;
1619 else if (td->o.file_lock_mode == FILE_LOCK_READWRITE)
1620 __f->rwlock = f->rwlock;
1621
1622 td->files[i] = __f;
1623 }
1624}
1625
1626/*
1627 * Returns the index that matches the filename, or -1 if not there
1628 */
1629int get_fileno(struct thread_data *td, const char *fname)
1630{
1631 struct fio_file *f;
1632 unsigned int i;
1633
1634 for_each_file(td, f, i)
1635 if (!strcmp(f->file_name, fname))
1636 return i;
1637
1638 return -1;
1639}
1640
1641/*
1642 * For log usage, where we add/open/close files automatically
1643 */
1644void free_release_files(struct thread_data *td)
1645{
1646 close_files(td);
1647 td->o.nr_files = 0;
1648 td->o.open_files = 0;
1649 td->files_index = 0;
1650 td->nr_normal_files = 0;
1651}
1652
1653void fio_file_reset(struct thread_data *td, struct fio_file *f)
1654{
1655 int i;
1656
1657 for (i = 0; i < DDIR_RWDIR_CNT; i++) {
1658 f->last_pos[i] = f->file_offset;
1659 f->last_start[i] = -1ULL;
1660 }
1661
1662 if (fio_file_axmap(f))
1663 axmap_reset(f->io_axmap);
1664 else if (fio_file_lfsr(f))
1665 lfsr_reset(&f->lfsr, td->rand_seeds[FIO_RAND_BLOCK_OFF]);
1666}
1667
1668bool fio_files_done(struct thread_data *td)
1669{
1670 struct fio_file *f;
1671 unsigned int i;
1672
1673 for_each_file(td, f, i)
1674 if (!fio_file_done(f))
1675 return false;
1676
1677 return true;
1678}
1679
1680/* free memory used in initialization phase only */
1681void filesetup_mem_free(void)
1682{
1683 free_already_allocated();
1684}
fio - Flexible IO Tester