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fio: fix s390 timing for older machines/binutils
[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;
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->io_ops->flags & 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 dprint(FD_FILE, "layout unlink %s\n", f->file_name);
62 if ((unlink(f->file_name) < 0) && (errno != ENOENT)) {
63 td_verror(td, errno, "unlink");
64 return 1;
65 }
66 }
67
68 flags = O_WRONLY | O_CREAT;
69 if (new_layout)
70 flags |= O_TRUNC;
71
72 dprint(FD_FILE, "open file %s, flags %x\n", f->file_name, flags);
73 f->fd = open(f->file_name, flags, 0644);
74 if (f->fd < 0) {
75 td_verror(td, errno, "open");
76 return 1;
77 }
78
79#ifdef CONFIG_POSIX_FALLOCATE
80 if (!td->o.fill_device) {
81 switch (td->o.fallocate_mode) {
82 case FIO_FALLOCATE_NONE:
83 break;
84 case FIO_FALLOCATE_POSIX:
85 dprint(FD_FILE, "posix_fallocate file %s size %llu\n",
86 f->file_name,
87 (unsigned long long) f->real_file_size);
88
89 r = posix_fallocate(f->fd, 0, f->real_file_size);
90 if (r > 0) {
91 log_err("fio: posix_fallocate fails: %s\n",
92 strerror(r));
93 }
94 break;
95#ifdef CONFIG_LINUX_FALLOCATE
96 case FIO_FALLOCATE_KEEP_SIZE:
97 dprint(FD_FILE,
98 "fallocate(FALLOC_FL_KEEP_SIZE) "
99 "file %s size %llu\n", f->file_name,
100 (unsigned long long) f->real_file_size);
101
102 r = fallocate(f->fd, FALLOC_FL_KEEP_SIZE, 0,
103 f->real_file_size);
104 if (r != 0)
105 td_verror(td, errno, "fallocate");
106
107 break;
108#endif /* CONFIG_LINUX_FALLOCATE */
109 default:
110 log_err("fio: unknown fallocate mode: %d\n",
111 td->o.fallocate_mode);
112 assert(0);
113 }
114 }
115#endif /* CONFIG_POSIX_FALLOCATE */
116
117 if (!new_layout)
118 goto done;
119
120 /*
121 * The size will be -1ULL when fill_device is used, so don't truncate
122 * or fallocate this file, just write it
123 */
124 if (!td->o.fill_device) {
125 dprint(FD_FILE, "truncate file %s, size %llu\n", f->file_name,
126 (unsigned long long) f->real_file_size);
127 if (ftruncate(f->fd, f->real_file_size) == -1) {
128 if (errno != EFBIG) {
129 td_verror(td, errno, "ftruncate");
130 goto err;
131 }
132 }
133 }
134
135 b = malloc(td->o.max_bs[DDIR_WRITE]);
136
137 left = f->real_file_size;
138 while (left && !td->terminate) {
139 bs = td->o.max_bs[DDIR_WRITE];
140 if (bs > left)
141 bs = left;
142
143 fill_io_buffer(td, b, bs, bs);
144
145 r = write(f->fd, b, bs);
146
147 if (r > 0) {
148 left -= r;
149 continue;
150 } else {
151 if (r < 0) {
152 int __e = errno;
153
154 if (__e == ENOSPC) {
155 if (td->o.fill_device)
156 break;
157 log_info("fio: ENOSPC on laying out "
158 "file, stopping\n");
159 break;
160 }
161 td_verror(td, errno, "write");
162 } else
163 td_verror(td, EIO, "write");
164
165 break;
166 }
167 }
168
169 if (td->terminate) {
170 dprint(FD_FILE, "terminate unlink %s\n", f->file_name);
171 unlink(f->file_name);
172 } else if (td->o.create_fsync) {
173 if (fsync(f->fd) < 0) {
174 td_verror(td, errno, "fsync");
175 goto err;
176 }
177 }
178 if (td->o.fill_device && !td_write(td)) {
179 fio_file_clear_size_known(f);
180 if (td_io_get_file_size(td, f))
181 goto err;
182 if (f->io_size > f->real_file_size)
183 f->io_size = f->real_file_size;
184 }
185
186 free(b);
187done:
188 return 0;
189err:
190 close(f->fd);
191 f->fd = -1;
192 return 1;
193}
194
195static int pre_read_file(struct thread_data *td, struct fio_file *f)
196{
197 int ret = 0, r, did_open = 0, old_runstate;
198 unsigned long long left;
199 unsigned int bs;
200 char *b;
201
202 if (td->io_ops->flags & FIO_PIPEIO)
203 return 0;
204
205 if (!fio_file_open(f)) {
206 if (td->io_ops->open_file(td, f)) {
207 log_err("fio: cannot pre-read, failed to open file\n");
208 return 1;
209 }
210 did_open = 1;
211 }
212
213 old_runstate = td_bump_runstate(td, TD_PRE_READING);
214
215 bs = td->o.max_bs[DDIR_READ];
216 b = malloc(bs);
217 memset(b, 0, bs);
218
219 if (lseek(f->fd, f->file_offset, SEEK_SET) < 0) {
220 td_verror(td, errno, "lseek");
221 log_err("fio: failed to lseek pre-read file\n");
222 ret = 1;
223 goto error;
224 }
225
226 left = f->io_size;
227
228 while (left && !td->terminate) {
229 if (bs > left)
230 bs = left;
231
232 r = read(f->fd, b, bs);
233
234 if (r == (int) bs) {
235 left -= bs;
236 continue;
237 } else {
238 td_verror(td, EIO, "pre_read");
239 break;
240 }
241 }
242
243error:
244 td_restore_runstate(td, old_runstate);
245
246 if (did_open)
247 td->io_ops->close_file(td, f);
248
249 free(b);
250 return ret;
251}
252
253static unsigned long long get_rand_file_size(struct thread_data *td)
254{
255 unsigned long long ret, sized;
256 unsigned long r;
257
258 if (td->o.use_os_rand) {
259 r = os_random_long(&td->file_size_state);
260 sized = td->o.file_size_high - td->o.file_size_low;
261 ret = (unsigned long long) ((double) sized * (r / (OS_RAND_MAX + 1.0)));
262 } else {
263 r = __rand(&td->__file_size_state);
264 sized = td->o.file_size_high - td->o.file_size_low;
265 ret = (unsigned long long) ((double) sized * (r / (FRAND_MAX + 1.0)));
266 }
267
268 ret += td->o.file_size_low;
269 ret -= (ret % td->o.rw_min_bs);
270 return ret;
271}
272
273static int file_size(struct thread_data *td, struct fio_file *f)
274{
275 struct stat st;
276
277 if (stat(f->file_name, &st) == -1) {
278 td_verror(td, errno, "fstat");
279 return 1;
280 }
281
282 f->real_file_size = st.st_size;
283 return 0;
284}
285
286static int bdev_size(struct thread_data *td, struct fio_file *f)
287{
288 unsigned long long bytes = 0;
289 int r;
290
291 if (td->io_ops->open_file(td, f)) {
292 log_err("fio: failed opening blockdev %s for size check\n",
293 f->file_name);
294 return 1;
295 }
296
297 r = blockdev_size(f, &bytes);
298 if (r) {
299 td_verror(td, r, "blockdev_size");
300 goto err;
301 }
302
303 if (!bytes) {
304 log_err("%s: zero sized block device?\n", f->file_name);
305 goto err;
306 }
307
308 f->real_file_size = bytes;
309 td->io_ops->close_file(td, f);
310 return 0;
311err:
312 td->io_ops->close_file(td, f);
313 return 1;
314}
315
316static int char_size(struct thread_data *td, struct fio_file *f)
317{
318#ifdef FIO_HAVE_CHARDEV_SIZE
319 unsigned long long bytes = 0;
320 int r;
321
322 if (td->io_ops->open_file(td, f)) {
323 log_err("fio: failed opening blockdev %s for size check\n",
324 f->file_name);
325 return 1;
326 }
327
328 r = chardev_size(f, &bytes);
329 if (r) {
330 td_verror(td, r, "chardev_size");
331 goto err;
332 }
333
334 if (!bytes) {
335 log_err("%s: zero sized char device?\n", f->file_name);
336 goto err;
337 }
338
339 f->real_file_size = bytes;
340 td->io_ops->close_file(td, f);
341 return 0;
342err:
343 td->io_ops->close_file(td, f);
344 return 1;
345#else
346 f->real_file_size = -1ULL;
347 return 0;
348#endif
349}
350
351static int get_file_size(struct thread_data *td, struct fio_file *f)
352{
353 int ret = 0;
354
355 if (fio_file_size_known(f))
356 return 0;
357
358 if (f->filetype == FIO_TYPE_FILE)
359 ret = file_size(td, f);
360 else if (f->filetype == FIO_TYPE_BD)
361 ret = bdev_size(td, f);
362 else if (f->filetype == FIO_TYPE_CHAR)
363 ret = char_size(td, f);
364 else
365 f->real_file_size = -1;
366
367 if (ret)
368 return ret;
369
370 if (f->file_offset > f->real_file_size) {
371 log_err("%s: offset extends end (%llu > %llu)\n", td->o.name,
372 (unsigned long long) f->file_offset,
373 (unsigned long long) f->real_file_size);
374 return 1;
375 }
376
377 fio_file_set_size_known(f);
378 return 0;
379}
380
381static int __file_invalidate_cache(struct thread_data *td, struct fio_file *f,
382 unsigned long long off,
383 unsigned long long len)
384{
385 int ret = 0;
386
387 if (len == -1ULL)
388 len = f->io_size;
389 if (off == -1ULL)
390 off = f->file_offset;
391
392 if (len == -1ULL || off == -1ULL)
393 return 0;
394
395 dprint(FD_IO, "invalidate cache %s: %llu/%llu\n", f->file_name, off,
396 len);
397
398 /*
399 * FIXME: add blockdev flushing too
400 */
401 if (f->mmap_ptr) {
402 ret = posix_madvise(f->mmap_ptr, f->mmap_sz, POSIX_MADV_DONTNEED);
403#ifdef FIO_MADV_FREE
404 if (f->filetype == FIO_TYPE_BD)
405 (void) posix_madvise(f->mmap_ptr, f->mmap_sz, FIO_MADV_FREE);
406#endif
407 } else if (f->filetype == FIO_TYPE_FILE) {
408 ret = posix_fadvise(f->fd, off, len, POSIX_FADV_DONTNEED);
409 } else if (f->filetype == FIO_TYPE_BD) {
410 ret = blockdev_invalidate_cache(f);
411 if (ret < 0 && errno == EACCES && geteuid()) {
412 if (!root_warn) {
413 log_err("fio: only root may flush block "
414 "devices. Cache flush bypassed!\n");
415 root_warn = 1;
416 }
417 ret = 0;
418 }
419 } else if (f->filetype == FIO_TYPE_CHAR || f->filetype == FIO_TYPE_PIPE)
420 ret = 0;
421
422 if (ret < 0) {
423 td_verror(td, errno, "invalidate_cache");
424 return 1;
425 } else if (ret > 0) {
426 td_verror(td, ret, "invalidate_cache");
427 return 1;
428 }
429
430 return ret;
431
432}
433
434int file_invalidate_cache(struct thread_data *td, struct fio_file *f)
435{
436 if (!fio_file_open(f))
437 return 0;
438
439 return __file_invalidate_cache(td, f, -1ULL, -1ULL);
440}
441
442int generic_close_file(struct thread_data fio_unused *td, struct fio_file *f)
443{
444 int ret = 0;
445
446 dprint(FD_FILE, "fd close %s\n", f->file_name);
447
448 remove_file_hash(f);
449
450 if (close(f->fd) < 0)
451 ret = errno;
452
453 f->fd = -1;
454
455 if (f->shadow_fd != -1) {
456 close(f->shadow_fd);
457 f->shadow_fd = -1;
458 }
459
460 f->engine_data = 0;
461 return ret;
462}
463
464int file_lookup_open(struct fio_file *f, int flags)
465{
466 struct fio_file *__f;
467 int from_hash;
468
469 __f = lookup_file_hash(f->file_name);
470 if (__f) {
471 dprint(FD_FILE, "found file in hash %s\n", f->file_name);
472 /*
473 * racy, need the __f->lock locked
474 */
475 f->lock = __f->lock;
476 from_hash = 1;
477 } else {
478 dprint(FD_FILE, "file not found in hash %s\n", f->file_name);
479 from_hash = 0;
480 }
481
482 f->fd = open(f->file_name, flags, 0600);
483 return from_hash;
484}
485
486static int file_close_shadow_fds(struct thread_data *td)
487{
488 struct fio_file *f;
489 int num_closed = 0;
490 unsigned int i;
491
492 for_each_file(td, f, i) {
493 if (f->shadow_fd == -1)
494 continue;
495
496 close(f->shadow_fd);
497 f->shadow_fd = -1;
498 num_closed++;
499 }
500
501 return num_closed;
502}
503
504int generic_open_file(struct thread_data *td, struct fio_file *f)
505{
506 int is_std = 0;
507 int flags = 0;
508 int from_hash = 0;
509
510 dprint(FD_FILE, "fd open %s\n", f->file_name);
511
512 if (td_trim(td) && f->filetype != FIO_TYPE_BD) {
513 log_err("fio: trim only applies to block device\n");
514 return 1;
515 }
516
517 if (!strcmp(f->file_name, "-")) {
518 if (td_rw(td)) {
519 log_err("fio: can't read/write to stdin/out\n");
520 return 1;
521 }
522 is_std = 1;
523
524 /*
525 * move output logging to stderr, if we are writing to stdout
526 */
527 if (td_write(td))
528 f_out = stderr;
529 }
530
531 if (td_trim(td))
532 goto skip_flags;
533 if (td->o.odirect)
534 flags |= OS_O_DIRECT;
535 if (td->o.oatomic) {
536 if (!FIO_O_ATOMIC) {
537 td_verror(td, EINVAL, "OS does not support atomic IO");
538 return 1;
539 }
540 flags |= OS_O_DIRECT | FIO_O_ATOMIC;
541 }
542 if (td->o.sync_io)
543 flags |= O_SYNC;
544 if (td->o.create_on_open)
545 flags |= O_CREAT;
546skip_flags:
547 if (f->filetype != FIO_TYPE_FILE)
548 flags |= FIO_O_NOATIME;
549
550open_again:
551 if (td_write(td)) {
552 if (!read_only)
553 flags |= O_RDWR;
554
555 if (f->filetype == FIO_TYPE_FILE)
556 flags |= O_CREAT;
557
558 if (is_std)
559 f->fd = dup(STDOUT_FILENO);
560 else
561 from_hash = file_lookup_open(f, flags);
562 } else if (td_read(td)) {
563 if (f->filetype == FIO_TYPE_CHAR && !read_only)
564 flags |= O_RDWR;
565 else
566 flags |= O_RDONLY;
567
568 if (is_std)
569 f->fd = dup(STDIN_FILENO);
570 else
571 from_hash = file_lookup_open(f, flags);
572 } else { //td trim
573 flags |= O_RDWR;
574 from_hash = file_lookup_open(f, flags);
575 }
576
577 if (f->fd == -1) {
578 char buf[FIO_VERROR_SIZE];
579 int __e = errno;
580
581 if (__e == EPERM && (flags & FIO_O_NOATIME)) {
582 flags &= ~FIO_O_NOATIME;
583 goto open_again;
584 }
585 if (__e == EMFILE && file_close_shadow_fds(td))
586 goto open_again;
587
588 snprintf(buf, sizeof(buf), "open(%s)", f->file_name);
589
590 if (__e == EINVAL && (flags & OS_O_DIRECT)) {
591 log_err("fio: looks like your file system does not " \
592 "support direct=1/buffered=0\n");
593 }
594
595 td_verror(td, __e, buf);
596 }
597
598 if (!from_hash && f->fd != -1) {
599 if (add_file_hash(f)) {
600 int fio_unused ret;
601
602 /*
603 * Stash away descriptor for later close. This is to
604 * work-around a "feature" on Linux, where a close of
605 * an fd that has been opened for write will trigger
606 * udev to call blkid to check partitions, fs id, etc.
607 * That pollutes the device cache, which can slow down
608 * unbuffered accesses.
609 */
610 if (f->shadow_fd == -1)
611 f->shadow_fd = f->fd;
612 else {
613 /*
614 * OK to ignore, we haven't done anything
615 * with it
616 */
617 ret = generic_close_file(td, f);
618 }
619 goto open_again;
620 }
621 }
622
623 return 0;
624}
625
626int generic_get_file_size(struct thread_data *td, struct fio_file *f)
627{
628 return get_file_size(td, f);
629}
630
631/*
632 * open/close all files, so that ->real_file_size gets set
633 */
634static int get_file_sizes(struct thread_data *td)
635{
636 struct fio_file *f;
637 unsigned int i;
638 int err = 0;
639
640 for_each_file(td, f, i) {
641 dprint(FD_FILE, "get file size for %p/%d/%p\n", f, i,
642 f->file_name);
643
644 if (td_io_get_file_size(td, f)) {
645 if (td->error != ENOENT) {
646 log_err("%s\n", td->verror);
647 err = 1;
648 }
649 clear_error(td);
650 }
651
652 if (f->real_file_size == -1ULL && td->o.size)
653 f->real_file_size = td->o.size / td->o.nr_files;
654 }
655
656 return err;
657}
658
659struct fio_mount {
660 struct flist_head list;
661 const char *base;
662 char __base[256];
663 unsigned int key;
664};
665
666/*
667 * Get free number of bytes for each file on each unique mount.
668 */
669static unsigned long long get_fs_free_counts(struct thread_data *td)
670{
671 struct flist_head *n, *tmp;
672 unsigned long long ret = 0;
673 struct fio_mount *fm;
674 FLIST_HEAD(list);
675 struct fio_file *f;
676 unsigned int i;
677
678 for_each_file(td, f, i) {
679 struct stat sb;
680 char buf[256];
681
682 if (f->filetype == FIO_TYPE_BD || f->filetype == FIO_TYPE_CHAR) {
683 if (f->real_file_size != -1ULL)
684 ret += f->real_file_size;
685 continue;
686 } else if (f->filetype != FIO_TYPE_FILE)
687 continue;
688
689 strcpy(buf, f->file_name);
690
691 if (stat(buf, &sb) < 0) {
692 if (errno != ENOENT)
693 break;
694 strcpy(buf, ".");
695 if (stat(buf, &sb) < 0)
696 break;
697 }
698
699 fm = NULL;
700 flist_for_each(n, &list) {
701 fm = flist_entry(n, struct fio_mount, list);
702 if (fm->key == sb.st_dev)
703 break;
704
705 fm = NULL;
706 }
707
708 if (fm)
709 continue;
710
711 fm = malloc(sizeof(*fm));
712 strcpy(fm->__base, buf);
713 fm->base = basename(fm->__base);
714 fm->key = sb.st_dev;
715 flist_add(&fm->list, &list);
716 }
717
718 flist_for_each_safe(n, tmp, &list) {
719 unsigned long long sz;
720
721 fm = flist_entry(n, struct fio_mount, list);
722 flist_del(&fm->list);
723
724 sz = get_fs_size(fm->base);
725 if (sz && sz != -1ULL)
726 ret += sz;
727
728 free(fm);
729 }
730
731 return ret;
732}
733
734uint64_t get_start_offset(struct thread_data *td, struct fio_file *f)
735{
736 struct thread_options *o = &td->o;
737
738 if (o->file_append && f->filetype == FIO_TYPE_FILE)
739 return f->real_file_size;
740
741 return td->o.start_offset +
742 (td->thread_number - 1) * td->o.offset_increment;
743}
744
745/*
746 * Open the files and setup files sizes, creating files if necessary.
747 */
748int setup_files(struct thread_data *td)
749{
750 unsigned long long total_size, extend_size;
751 struct thread_options *o = &td->o;
752 struct fio_file *f;
753 unsigned int i, nr_fs_extra = 0;
754 int err = 0, need_extend;
755 int old_state;
756 const unsigned int bs = td_min_bs(td);
757 uint64_t fs = 0;
758
759 dprint(FD_FILE, "setup files\n");
760
761 old_state = td_bump_runstate(td, TD_SETTING_UP);
762
763 if (o->read_iolog_file)
764 goto done;
765
766 /*
767 * if ioengine defines a setup() method, it's responsible for
768 * opening the files and setting f->real_file_size to indicate
769 * the valid range for that file.
770 */
771 if (td->io_ops->setup)
772 err = td->io_ops->setup(td);
773 else
774 err = get_file_sizes(td);
775
776 if (err)
777 goto err_out;
778
779 /*
780 * check sizes. if the files/devices do not exist and the size
781 * isn't passed to fio, abort.
782 */
783 total_size = 0;
784 for_each_file(td, f, i) {
785 if (f->real_file_size == -1ULL)
786 total_size = -1ULL;
787 else
788 total_size += f->real_file_size;
789 }
790
791 if (o->fill_device)
792 td->fill_device_size = get_fs_free_counts(td);
793
794 /*
795 * device/file sizes are zero and no size given, punt
796 */
797 if ((!total_size || total_size == -1ULL) && !o->size &&
798 !(td->io_ops->flags & FIO_NOIO) && !o->fill_device &&
799 !(o->nr_files && (o->file_size_low || o->file_size_high))) {
800 log_err("%s: you need to specify size=\n", o->name);
801 td_verror(td, EINVAL, "total_file_size");
802 goto err_out;
803 }
804
805 /*
806 * Calculate per-file size and potential extra size for the
807 * first files, if needed.
808 */
809 if (!o->file_size_low && o->nr_files) {
810 uint64_t all_fs;
811
812 fs = o->size / o->nr_files;
813 all_fs = fs * o->nr_files;
814
815 if (all_fs < o->size)
816 nr_fs_extra = (o->size - all_fs) / bs;
817 }
818
819 /*
820 * now file sizes are known, so we can set ->io_size. if size= is
821 * not given, ->io_size is just equal to ->real_file_size. if size
822 * is given, ->io_size is size / nr_files.
823 */
824 extend_size = total_size = 0;
825 need_extend = 0;
826 for_each_file(td, f, i) {
827 f->file_offset = get_start_offset(td, f);
828
829 if (!o->file_size_low) {
830 /*
831 * no file size range given, file size is equal to
832 * total size divided by number of files. If that is
833 * zero, set it to the real file size. If the size
834 * doesn't divide nicely with the min blocksize,
835 * make the first files bigger.
836 */
837 f->io_size = fs;
838 if (nr_fs_extra) {
839 nr_fs_extra--;
840 f->io_size += bs;
841 }
842
843 if (!f->io_size)
844 f->io_size = f->real_file_size - f->file_offset;
845 } else if (f->real_file_size < o->file_size_low ||
846 f->real_file_size > o->file_size_high) {
847 if (f->file_offset > o->file_size_low)
848 goto err_offset;
849 /*
850 * file size given. if it's fixed, use that. if it's a
851 * range, generate a random size in-between.
852 */
853 if (o->file_size_low == o->file_size_high)
854 f->io_size = o->file_size_low - f->file_offset;
855 else {
856 f->io_size = get_rand_file_size(td)
857 - f->file_offset;
858 }
859 } else
860 f->io_size = f->real_file_size - f->file_offset;
861
862 if (f->io_size == -1ULL)
863 total_size = -1ULL;
864 else {
865 if (o->size_percent)
866 f->io_size = (f->io_size * o->size_percent) / 100;
867 total_size += f->io_size;
868 }
869
870 if (f->filetype == FIO_TYPE_FILE &&
871 (f->io_size + f->file_offset) > f->real_file_size &&
872 !(td->io_ops->flags & FIO_DISKLESSIO)) {
873 if (!o->create_on_open) {
874 need_extend++;
875 extend_size += (f->io_size + f->file_offset);
876 } else
877 f->real_file_size = f->io_size + f->file_offset;
878 fio_file_set_extend(f);
879 }
880 }
881
882 if (!o->size || o->size > total_size)
883 o->size = total_size;
884
885 /*
886 * See if we need to extend some files
887 */
888 if (need_extend) {
889 temp_stall_ts = 1;
890 if (output_format == FIO_OUTPUT_NORMAL)
891 log_info("%s: Laying out IO file(s) (%u file(s) /"
892 " %lluMB)\n", o->name, need_extend,
893 extend_size >> 20);
894
895 for_each_file(td, f, i) {
896 unsigned long long old_len = -1ULL, extend_len = -1ULL;
897
898 if (!fio_file_extend(f))
899 continue;
900
901 assert(f->filetype == FIO_TYPE_FILE);
902 fio_file_clear_extend(f);
903 if (!o->fill_device) {
904 old_len = f->real_file_size;
905 extend_len = f->io_size + f->file_offset -
906 old_len;
907 }
908 f->real_file_size = (f->io_size + f->file_offset);
909 err = extend_file(td, f);
910 if (err)
911 break;
912
913 err = __file_invalidate_cache(td, f, old_len,
914 extend_len);
915 close(f->fd);
916 f->fd = -1;
917 if (err)
918 break;
919 }
920 temp_stall_ts = 0;
921 }
922
923 if (err)
924 goto err_out;
925
926 if (!o->zone_size)
927 o->zone_size = o->size;
928
929 /*
930 * iolog already set the total io size, if we read back
931 * stored entries.
932 */
933 if (!o->read_iolog_file)
934 td->total_io_size = o->size * o->loops;
935
936done:
937 if (o->create_only)
938 td->done = 1;
939
940 td_restore_runstate(td, old_state);
941 return 0;
942err_offset:
943 log_err("%s: you need to specify valid offset=\n", o->name);
944err_out:
945 td_restore_runstate(td, old_state);
946 return 1;
947}
948
949int pre_read_files(struct thread_data *td)
950{
951 struct fio_file *f;
952 unsigned int i;
953
954 dprint(FD_FILE, "pre_read files\n");
955
956 for_each_file(td, f, i) {
957 pre_read_file(td, f);
958 }
959
960 return 1;
961}
962
963static int __init_rand_distribution(struct thread_data *td, struct fio_file *f)
964{
965 unsigned int range_size, seed;
966 unsigned long nranges;
967 uint64_t file_size;
968
969 range_size = min(td->o.min_bs[DDIR_READ], td->o.min_bs[DDIR_WRITE]);
970 file_size = min(f->real_file_size, f->io_size);
971
972 nranges = (file_size + range_size - 1) / range_size;
973
974 seed = jhash(f->file_name, strlen(f->file_name), 0) * td->thread_number;
975 if (!td->o.rand_repeatable)
976 seed = td->rand_seeds[4];
977
978 if (td->o.random_distribution == FIO_RAND_DIST_ZIPF)
979 zipf_init(&f->zipf, nranges, td->o.zipf_theta.u.f, seed);
980 else
981 pareto_init(&f->zipf, nranges, td->o.pareto_h.u.f, seed);
982
983 return 1;
984}
985
986static int init_rand_distribution(struct thread_data *td)
987{
988 struct fio_file *f;
989 unsigned int i;
990 int state;
991
992 if (td->o.random_distribution == FIO_RAND_DIST_RANDOM)
993 return 0;
994
995 state = td_bump_runstate(td, TD_SETTING_UP);
996
997 for_each_file(td, f, i)
998 __init_rand_distribution(td, f);
999
1000 td_restore_runstate(td, state);
1001
1002 return 1;
1003}
1004
1005int init_random_map(struct thread_data *td)
1006{
1007 unsigned long long blocks;
1008 struct fio_file *f;
1009 unsigned int i;
1010
1011 if (init_rand_distribution(td))
1012 return 0;
1013 if (!td_random(td))
1014 return 0;
1015
1016 for_each_file(td, f, i) {
1017 uint64_t file_size = min(f->real_file_size, f->io_size);
1018
1019 blocks = file_size / (unsigned long long) td->o.rw_min_bs;
1020
1021 if (td->o.random_generator == FIO_RAND_GEN_LFSR) {
1022 unsigned long seed;
1023
1024 seed = td->rand_seeds[FIO_RAND_BLOCK_OFF];
1025
1026 if (!lfsr_init(&f->lfsr, blocks, seed, 0))
1027 continue;
1028 } else if (!td->o.norandommap) {
1029 f->io_axmap = axmap_new(blocks);
1030 if (f->io_axmap)
1031 continue;
1032 } else if (td->o.norandommap)
1033 continue;
1034
1035 if (!td->o.softrandommap) {
1036 log_err("fio: failed allocating random map. If running"
1037 " a large number of jobs, try the 'norandommap'"
1038 " option or set 'softrandommap'. Or give"
1039 " a larger --alloc-size to fio.\n");
1040 return 1;
1041 }
1042
1043 log_info("fio: file %s failed allocating random map. Running "
1044 "job without.\n", f->file_name);
1045 }
1046
1047 return 0;
1048}
1049
1050void close_files(struct thread_data *td)
1051{
1052 struct fio_file *f;
1053 unsigned int i;
1054
1055 for_each_file(td, f, i) {
1056 if (fio_file_open(f))
1057 td_io_close_file(td, f);
1058 }
1059}
1060
1061void close_and_free_files(struct thread_data *td)
1062{
1063 struct fio_file *f;
1064 unsigned int i;
1065
1066 dprint(FD_FILE, "close files\n");
1067
1068 for_each_file(td, f, i) {
1069 if (fio_file_open(f))
1070 td_io_close_file(td, f);
1071
1072 remove_file_hash(f);
1073
1074 if (td->o.unlink && f->filetype == FIO_TYPE_FILE) {
1075 dprint(FD_FILE, "free unlink %s\n", f->file_name);
1076 unlink(f->file_name);
1077 }
1078
1079 sfree(f->file_name);
1080 f->file_name = NULL;
1081 axmap_free(f->io_axmap);
1082 f->io_axmap = NULL;
1083 sfree(f);
1084 }
1085
1086 td->o.filename = NULL;
1087 free(td->files);
1088 free(td->file_locks);
1089 td->files_index = 0;
1090 td->files = NULL;
1091 td->file_locks = NULL;
1092 td->o.file_lock_mode = FILE_LOCK_NONE;
1093 td->o.nr_files = 0;
1094}
1095
1096static void get_file_type(struct fio_file *f)
1097{
1098 struct stat sb;
1099
1100 if (!strcmp(f->file_name, "-"))
1101 f->filetype = FIO_TYPE_PIPE;
1102 else
1103 f->filetype = FIO_TYPE_FILE;
1104
1105 /* \\.\ is the device namespace in Windows, where every file is
1106 * a block device */
1107 if (strncmp(f->file_name, "\\\\.\\", 4) == 0)
1108 f->filetype = FIO_TYPE_BD;
1109
1110 if (!stat(f->file_name, &sb)) {
1111 if (S_ISBLK(sb.st_mode))
1112 f->filetype = FIO_TYPE_BD;
1113 else if (S_ISCHR(sb.st_mode))
1114 f->filetype = FIO_TYPE_CHAR;
1115 else if (S_ISFIFO(sb.st_mode))
1116 f->filetype = FIO_TYPE_PIPE;
1117 }
1118}
1119
1120static int __is_already_allocated(const char *fname)
1121{
1122 struct flist_head *entry;
1123 char *filename;
1124
1125 if (flist_empty(&filename_list))
1126 return 0;
1127
1128 flist_for_each(entry, &filename_list) {
1129 filename = flist_entry(entry, struct file_name, list)->filename;
1130
1131 if (strcmp(filename, fname) == 0)
1132 return 1;
1133 }
1134
1135 return 0;
1136}
1137
1138static int is_already_allocated(const char *fname)
1139{
1140 int ret;
1141
1142 fio_file_hash_lock();
1143 ret = __is_already_allocated(fname);
1144 fio_file_hash_unlock();
1145 return ret;
1146}
1147
1148static void set_already_allocated(const char *fname)
1149{
1150 struct file_name *fn;
1151
1152 fn = malloc(sizeof(struct file_name));
1153 fn->filename = strdup(fname);
1154
1155 fio_file_hash_lock();
1156 if (!__is_already_allocated(fname)) {
1157 flist_add_tail(&fn->list, &filename_list);
1158 fn = NULL;
1159 }
1160 fio_file_hash_unlock();
1161
1162 if (fn) {
1163 free(fn->filename);
1164 free(fn);
1165 }
1166}
1167
1168
1169static void free_already_allocated(void)
1170{
1171 struct flist_head *entry, *tmp;
1172 struct file_name *fn;
1173
1174 if (flist_empty(&filename_list))
1175 return;
1176
1177 fio_file_hash_lock();
1178 flist_for_each_safe(entry, tmp, &filename_list) {
1179 fn = flist_entry(entry, struct file_name, list);
1180 free(fn->filename);
1181 flist_del(&fn->list);
1182 free(fn);
1183 }
1184
1185 fio_file_hash_unlock();
1186}
1187
1188static struct fio_file *alloc_new_file(struct thread_data *td)
1189{
1190 struct fio_file *f;
1191
1192 f = smalloc(sizeof(*f));
1193 if (!f) {
1194 log_err("fio: smalloc OOM\n");
1195 assert(0);
1196 return NULL;
1197 }
1198
1199 f->fd = -1;
1200 f->shadow_fd = -1;
1201 fio_file_reset(td, f);
1202 return f;
1203}
1204
1205int add_file(struct thread_data *td, const char *fname, int numjob, int inc)
1206{
1207 int cur_files = td->files_index;
1208 char file_name[PATH_MAX];
1209 struct fio_file *f;
1210 int len = 0;
1211
1212 dprint(FD_FILE, "add file %s\n", fname);
1213
1214 if (td->o.directory)
1215 len = set_name_idx(file_name, td->o.directory, numjob);
1216
1217 sprintf(file_name + len, "%s", fname);
1218
1219 /* clean cloned siblings using existing files */
1220 if (numjob && is_already_allocated(file_name))
1221 return 0;
1222
1223 f = alloc_new_file(td);
1224
1225 if (td->files_size <= td->files_index) {
1226 unsigned int new_size = td->o.nr_files + 1;
1227
1228 dprint(FD_FILE, "resize file array to %d files\n", new_size);
1229
1230 td->files = realloc(td->files, new_size * sizeof(f));
1231 if (td->files == NULL) {
1232 log_err("fio: realloc OOM\n");
1233 assert(0);
1234 }
1235 if (td->o.file_lock_mode != FILE_LOCK_NONE) {
1236 td->file_locks = realloc(td->file_locks, new_size);
1237 if (!td->file_locks) {
1238 log_err("fio: realloc OOM\n");
1239 assert(0);
1240 }
1241 td->file_locks[cur_files] = FILE_LOCK_NONE;
1242 }
1243 td->files_size = new_size;
1244 }
1245 td->files[cur_files] = f;
1246 f->fileno = cur_files;
1247
1248 /*
1249 * init function, io engine may not be loaded yet
1250 */
1251 if (td->io_ops && (td->io_ops->flags & FIO_DISKLESSIO))
1252 f->real_file_size = -1ULL;
1253
1254 f->file_name = smalloc_strdup(file_name);
1255 if (!f->file_name) {
1256 log_err("fio: smalloc OOM\n");
1257 assert(0);
1258 }
1259
1260 get_file_type(f);
1261
1262 switch (td->o.file_lock_mode) {
1263 case FILE_LOCK_NONE:
1264 break;
1265 case FILE_LOCK_READWRITE:
1266 f->rwlock = fio_rwlock_init();
1267 break;
1268 case FILE_LOCK_EXCLUSIVE:
1269 f->lock = fio_mutex_init(FIO_MUTEX_UNLOCKED);
1270 break;
1271 default:
1272 log_err("fio: unknown lock mode: %d\n", td->o.file_lock_mode);
1273 assert(0);
1274 }
1275
1276 td->files_index++;
1277 if (f->filetype == FIO_TYPE_FILE)
1278 td->nr_normal_files++;
1279
1280 set_already_allocated(file_name);
1281
1282 if (inc)
1283 td->o.nr_files++;
1284
1285 dprint(FD_FILE, "file %p \"%s\" added at %d\n", f, f->file_name,
1286 cur_files);
1287
1288 return cur_files;
1289}
1290
1291int add_file_exclusive(struct thread_data *td, const char *fname)
1292{
1293 struct fio_file *f;
1294 unsigned int i;
1295
1296 for_each_file(td, f, i) {
1297 if (!strcmp(f->file_name, fname))
1298 return i;
1299 }
1300
1301 return add_file(td, fname, 0, 1);
1302}
1303
1304void get_file(struct fio_file *f)
1305{
1306 dprint(FD_FILE, "get file %s, ref=%d\n", f->file_name, f->references);
1307 assert(fio_file_open(f));
1308 f->references++;
1309}
1310
1311int put_file(struct thread_data *td, struct fio_file *f)
1312{
1313 int f_ret = 0, ret = 0;
1314
1315 dprint(FD_FILE, "put file %s, ref=%d\n", f->file_name, f->references);
1316
1317 if (!fio_file_open(f)) {
1318 assert(f->fd == -1);
1319 return 0;
1320 }
1321
1322 assert(f->references);
1323 if (--f->references)
1324 return 0;
1325
1326 if (should_fsync(td) && td->o.fsync_on_close)
1327 f_ret = fsync(f->fd);
1328
1329 if (td->io_ops->close_file)
1330 ret = td->io_ops->close_file(td, f);
1331
1332 if (!ret)
1333 ret = f_ret;
1334
1335 td->nr_open_files--;
1336 fio_file_clear_open(f);
1337 assert(f->fd == -1);
1338 return ret;
1339}
1340
1341void lock_file(struct thread_data *td, struct fio_file *f, enum fio_ddir ddir)
1342{
1343 if (!f->lock || td->o.file_lock_mode == FILE_LOCK_NONE)
1344 return;
1345
1346 if (td->o.file_lock_mode == FILE_LOCK_READWRITE) {
1347 if (ddir == DDIR_READ)
1348 fio_rwlock_read(f->rwlock);
1349 else
1350 fio_rwlock_write(f->rwlock);
1351 } else if (td->o.file_lock_mode == FILE_LOCK_EXCLUSIVE)
1352 fio_mutex_down(f->lock);
1353
1354 td->file_locks[f->fileno] = td->o.file_lock_mode;
1355}
1356
1357void unlock_file(struct thread_data *td, struct fio_file *f)
1358{
1359 if (!f->lock || td->o.file_lock_mode == FILE_LOCK_NONE)
1360 return;
1361
1362 if (td->o.file_lock_mode == FILE_LOCK_READWRITE)
1363 fio_rwlock_unlock(f->rwlock);
1364 else if (td->o.file_lock_mode == FILE_LOCK_EXCLUSIVE)
1365 fio_mutex_up(f->lock);
1366
1367 td->file_locks[f->fileno] = FILE_LOCK_NONE;
1368}
1369
1370void unlock_file_all(struct thread_data *td, struct fio_file *f)
1371{
1372 if (td->o.file_lock_mode == FILE_LOCK_NONE || !td->file_locks)
1373 return;
1374 if (td->file_locks[f->fileno] != FILE_LOCK_NONE)
1375 unlock_file(td, f);
1376}
1377
1378static int recurse_dir(struct thread_data *td, const char *dirname)
1379{
1380 struct dirent *dir;
1381 int ret = 0;
1382 DIR *D;
1383
1384 D = opendir(dirname);
1385 if (!D) {
1386 char buf[FIO_VERROR_SIZE];
1387
1388 snprintf(buf, FIO_VERROR_SIZE, "opendir(%s)", dirname);
1389 td_verror(td, errno, buf);
1390 return 1;
1391 }
1392
1393 while ((dir = readdir(D)) != NULL) {
1394 char full_path[PATH_MAX];
1395 struct stat sb;
1396
1397 if (!strcmp(dir->d_name, ".") || !strcmp(dir->d_name, ".."))
1398 continue;
1399
1400 sprintf(full_path, "%s%s%s", dirname, FIO_OS_PATH_SEPARATOR, dir->d_name);
1401
1402 if (lstat(full_path, &sb) == -1) {
1403 if (errno != ENOENT) {
1404 td_verror(td, errno, "stat");
1405 return 1;
1406 }
1407 }
1408
1409 if (S_ISREG(sb.st_mode)) {
1410 add_file(td, full_path, 0, 1);
1411 continue;
1412 }
1413 if (!S_ISDIR(sb.st_mode))
1414 continue;
1415
1416 ret = recurse_dir(td, full_path);
1417 if (ret)
1418 break;
1419 }
1420
1421 closedir(D);
1422 return ret;
1423}
1424
1425int add_dir_files(struct thread_data *td, const char *path)
1426{
1427 int ret = recurse_dir(td, path);
1428
1429 if (!ret)
1430 log_info("fio: opendir added %d files\n", td->o.nr_files);
1431
1432 return ret;
1433}
1434
1435void dup_files(struct thread_data *td, struct thread_data *org)
1436{
1437 struct fio_file *f;
1438 unsigned int i;
1439
1440 dprint(FD_FILE, "dup files: %d\n", org->files_index);
1441
1442 if (!org->files)
1443 return;
1444
1445 td->files = malloc(org->files_index * sizeof(f));
1446
1447 if (td->o.file_lock_mode != FILE_LOCK_NONE)
1448 td->file_locks = malloc(org->files_index);
1449
1450 for_each_file(org, f, i) {
1451 struct fio_file *__f;
1452
1453 __f = alloc_new_file(td);
1454
1455 if (f->file_name) {
1456 __f->file_name = smalloc_strdup(f->file_name);
1457 if (!__f->file_name) {
1458 log_err("fio: smalloc OOM\n");
1459 assert(0);
1460 }
1461
1462 __f->filetype = f->filetype;
1463 }
1464
1465 if (td->o.file_lock_mode == FILE_LOCK_EXCLUSIVE)
1466 __f->lock = f->lock;
1467 else if (td->o.file_lock_mode == FILE_LOCK_READWRITE)
1468 __f->rwlock = f->rwlock;
1469
1470 td->files[i] = __f;
1471 }
1472}
1473
1474/*
1475 * Returns the index that matches the filename, or -1 if not there
1476 */
1477int get_fileno(struct thread_data *td, const char *fname)
1478{
1479 struct fio_file *f;
1480 unsigned int i;
1481
1482 for_each_file(td, f, i)
1483 if (!strcmp(f->file_name, fname))
1484 return i;
1485
1486 return -1;
1487}
1488
1489/*
1490 * For log usage, where we add/open/close files automatically
1491 */
1492void free_release_files(struct thread_data *td)
1493{
1494 close_files(td);
1495 td->files_index = 0;
1496 td->nr_normal_files = 0;
1497}
1498
1499void fio_file_reset(struct thread_data *td, struct fio_file *f)
1500{
1501 f->last_pos = f->file_offset;
1502 f->last_start = -1ULL;
1503 if (f->io_axmap)
1504 axmap_reset(f->io_axmap);
1505 if (td->o.random_generator == FIO_RAND_GEN_LFSR)
1506 lfsr_reset(&f->lfsr, td->rand_seeds[FIO_RAND_BLOCK_OFF]);
1507}
1508
1509int fio_files_done(struct thread_data *td)
1510{
1511 struct fio_file *f;
1512 unsigned int i;
1513
1514 for_each_file(td, f, i)
1515 if (!fio_file_done(f))
1516 return 0;
1517
1518 return 1;
1519}
1520
1521/* free memory used in initialization phase only */
1522void filesetup_mem_free(void)
1523{
1524 free_already_allocated();
1525}
fio - Flexible IO Tester