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