17 * Leaves f->fd open on success, caller must close
19 static int extend_file(struct thread_data *td, struct fio_file *f)
21 int r, new_layout = 0, unlink_file = 0, flags;
22 unsigned long long left;
27 log_err("fio: refusing extend of file due to read-only\n");
32 * check if we need to lay the file out complete again. fio
33 * does that for operations involving reads, or for writes
34 * where overwrite is set
36 if (td_read(td) || (td_write(td) && td->o.overwrite) ||
37 (td_write(td) && td->io_ops->flags & FIO_NOEXTEND))
39 if (td_write(td) && !td->o.overwrite)
42 if (unlink_file || new_layout) {
43 dprint(FD_FILE, "layout unlink %s\n", f->file_name);
44 if ((unlink(f->file_name) < 0) && (errno != ENOENT)) {
45 td_verror(td, errno, "unlink");
50 flags = O_WRONLY | O_CREAT;
54 dprint(FD_FILE, "open file %s, flags %x\n", f->file_name, flags);
55 f->fd = open(f->file_name, flags, 0644);
57 td_verror(td, errno, "open");
64 dprint(FD_FILE, "truncate file %s, size %llu\n", f->file_name,
66 if (ftruncate(f->fd, f->real_file_size) == -1) {
67 td_verror(td, errno, "ftruncate");
71 #ifdef FIO_HAVE_FALLOCATE
72 dprint(FD_FILE, "fallocate file %s, size %llu\n", f->file_name,
74 r = posix_fallocate(f->fd, 0, f->real_file_size);
76 log_err("fio: posix_fallocate fails: %s\n", strerror(-r));
79 b = malloc(td->o.max_bs[DDIR_WRITE]);
80 memset(b, 0, td->o.max_bs[DDIR_WRITE]);
82 left = f->real_file_size;
83 while (left && !td->terminate) {
84 bs = td->o.max_bs[DDIR_WRITE];
88 r = write(f->fd, b, bs);
95 td_verror(td, errno, "write");
97 td_verror(td, EIO, "write");
104 dprint(FD_FILE, "terminate unlink %s\n", f->file_name);
105 unlink(f->file_name);
106 } else if (td->o.create_fsync) {
107 if (fsync(f->fd) < 0) {
108 td_verror(td, errno, "fsync");
122 static int pre_read_file(struct thread_data *td, struct fio_file *f)
124 int r, did_open = 0, old_runstate;
125 unsigned long long left;
129 if (!(f->flags & FIO_FILE_OPEN)) {
130 if (td->io_ops->open_file(td, f)) {
131 log_err("fio: cannot pre-read, failed to open file\n");
137 old_runstate = td->runstate;
138 td_set_runstate(td, TD_PRE_READING);
140 bs = td->o.max_bs[DDIR_READ];
144 lseek(f->fd, f->file_offset, SEEK_SET);
147 while (left && !td->terminate) {
151 r = read(f->fd, b, bs);
158 td_verror(td, EIO, "pre_read");
163 td_set_runstate(td, old_runstate);
166 td->io_ops->close_file(td, f);
171 static unsigned long long get_rand_file_size(struct thread_data *td)
173 unsigned long long ret, sized;
176 r = os_random_long(&td->file_size_state);
177 sized = td->o.file_size_high - td->o.file_size_low;
178 ret = (unsigned long long) ((double) sized * (r / (OS_RAND_MAX + 1.0)));
179 ret += td->o.file_size_low;
180 ret -= (ret % td->o.rw_min_bs);
184 static int file_size(struct thread_data *td, struct fio_file *f)
188 if (stat(f->file_name, &st) == -1) {
189 td_verror(td, errno, "fstat");
193 f->real_file_size = st.st_size;
197 static int bdev_size(struct thread_data *td, struct fio_file *f)
199 unsigned long long bytes;
202 if (td->io_ops->open_file(td, f)) {
203 log_err("fio: failed opening blockdev %s for size check\n",
208 r = blockdev_size(f->fd, &bytes);
210 td_verror(td, r, "blockdev_size");
215 log_err("%s: zero sized block device?\n", f->file_name);
219 f->real_file_size = bytes;
222 td->io_ops->close_file(td, f);
226 static int get_file_size(struct thread_data *td, struct fio_file *f)
230 if (f->flags & FIO_SIZE_KNOWN)
233 if (f->filetype == FIO_TYPE_FILE)
234 ret = file_size(td, f);
235 else if (f->filetype == FIO_TYPE_BD)
236 ret = bdev_size(td, f);
238 f->real_file_size = -1;
243 if (f->file_offset > f->real_file_size) {
244 log_err("%s: offset extends end (%Lu > %Lu)\n", td->o.name,
245 f->file_offset, f->real_file_size);
249 f->flags |= FIO_SIZE_KNOWN;
253 static int __file_invalidate_cache(struct thread_data *td, struct fio_file *f,
254 unsigned long long off,
255 unsigned long long len)
262 off = f->file_offset;
264 dprint(FD_IO, "invalidate cache %s: %llu/%llu\n", f->file_name, off,
268 * FIXME: add blockdev flushing too
271 ret = madvise(f->mmap, len, MADV_DONTNEED);
272 else if (f->filetype == FIO_TYPE_FILE) {
273 ret = fadvise(f->fd, off, len, POSIX_FADV_DONTNEED);
274 } else if (f->filetype == FIO_TYPE_BD) {
275 ret = blockdev_invalidate_cache(f->fd);
276 if (ret < 0 && errno == EACCES && geteuid()) {
278 log_err("fio: only root may flush block "
279 "devices. Cache flush bypassed!\n");
284 } else if (f->filetype == FIO_TYPE_CHAR || f->filetype == FIO_TYPE_PIPE)
288 td_verror(td, errno, "invalidate_cache");
290 } else if (ret > 0) {
291 td_verror(td, ret, "invalidate_cache");
299 int file_invalidate_cache(struct thread_data *td, struct fio_file *f)
301 if (!(f->flags & FIO_FILE_OPEN))
304 return __file_invalidate_cache(td, f, -1, -1);
307 int generic_close_file(struct thread_data fio_unused *td, struct fio_file *f)
311 dprint(FD_FILE, "fd close %s\n", f->file_name);
315 if (close(f->fd) < 0)
322 static int file_lookup_open(struct fio_file *f, int flags)
324 struct fio_file *__f;
327 __f = lookup_file_hash(f->file_name);
329 dprint(FD_FILE, "found file in hash %s\n", f->file_name);
331 * racy, need the __f->lock locked
334 f->lock_owner = __f->lock_owner;
335 f->lock_batch = __f->lock_batch;
336 f->lock_ddir = __f->lock_ddir;
339 dprint(FD_FILE, "file not found in hash %s\n", f->file_name);
343 f->fd = open(f->file_name, flags, 0600);
347 int generic_open_file(struct thread_data *td, struct fio_file *f)
353 dprint(FD_FILE, "fd open %s\n", f->file_name);
355 if (!strcmp(f->file_name, "-")) {
357 log_err("fio: can't read/write to stdin/out\n");
363 * move output logging to stderr, if we are writing to stdout
370 flags |= OS_O_DIRECT;
373 if (f->filetype != FIO_TYPE_FILE)
374 flags |= FIO_O_NOATIME;
375 if (td->o.create_on_open)
383 if (f->filetype == FIO_TYPE_FILE)
387 f->fd = dup(STDOUT_FILENO);
389 from_hash = file_lookup_open(f, flags);
391 if (f->filetype == FIO_TYPE_CHAR && !read_only)
397 f->fd = dup(STDIN_FILENO);
399 from_hash = file_lookup_open(f, flags);
403 char buf[FIO_VERROR_SIZE];
406 if (errno == EPERM && (flags & FIO_O_NOATIME)) {
407 flags &= ~FIO_O_NOATIME;
411 snprintf(buf, sizeof(buf) - 1, "open(%s)", f->file_name);
413 td_verror(td, __e, buf);
416 if (!from_hash && f->fd != -1) {
417 if (add_file_hash(f)) {
421 * OK to ignore, we haven't done anything with it
423 ret = generic_close_file(td, f);
431 int generic_get_file_size(struct thread_data *td, struct fio_file *f)
433 return get_file_size(td, f);
437 * open/close all files, so that ->real_file_size gets set
439 static int get_file_sizes(struct thread_data *td)
445 for_each_file(td, f, i) {
446 dprint(FD_FILE, "get file size for %p/%d/%p\n", f, i,
449 if (td_io_get_file_size(td, f)) {
450 if (td->error != ENOENT) {
451 log_err("%s\n", td->verror);
457 if (f->real_file_size == -1ULL && td->o.size)
458 f->real_file_size = td->o.size / td->o.nr_files;
465 * Open the files and setup files sizes, creating files if necessary.
467 int setup_files(struct thread_data *td)
469 unsigned long long total_size, extend_size;
472 int err = 0, need_extend;
474 dprint(FD_FILE, "setup files\n");
476 if (td->o.read_iolog_file)
480 * if ioengine defines a setup() method, it's responsible for
481 * opening the files and setting f->real_file_size to indicate
482 * the valid range for that file.
484 if (td->io_ops->setup)
485 err = td->io_ops->setup(td);
487 err = get_file_sizes(td);
493 * check sizes. if the files/devices do not exist and the size
494 * isn't passed to fio, abort.
497 for_each_file(td, f, i) {
498 if (f->real_file_size == -1ULL)
501 total_size += f->real_file_size;
505 * device/file sizes are zero and no size given, punt
507 if ((!total_size || total_size == -1ULL) && !td->o.size &&
508 !(td->io_ops->flags & FIO_NOIO) && !td->o.fill_device) {
509 log_err("%s: you need to specify size=\n", td->o.name);
510 td_verror(td, EINVAL, "total_file_size");
515 * now file sizes are known, so we can set ->io_size. if size= is
516 * not given, ->io_size is just equal to ->real_file_size. if size
517 * is given, ->io_size is size / nr_files.
519 extend_size = total_size = 0;
521 for_each_file(td, f, i) {
522 f->file_offset = td->o.start_offset;
524 if (!td->o.file_size_low) {
526 * no file size range given, file size is equal to
527 * total size divided by number of files. if that is
528 * zero, set it to the real file size.
530 f->io_size = td->o.size / td->o.nr_files;
532 f->io_size = f->real_file_size - f->file_offset;
533 } else if (f->real_file_size < td->o.file_size_low ||
534 f->real_file_size > td->o.file_size_high) {
535 if (f->file_offset > td->o.file_size_low)
538 * file size given. if it's fixed, use that. if it's a
539 * range, generate a random size in-between.
541 if (td->o.file_size_low == td->o.file_size_high) {
542 f->io_size = td->o.file_size_low
545 f->io_size = get_rand_file_size(td)
549 f->io_size = f->real_file_size - f->file_offset;
551 if (f->io_size == -1ULL)
554 total_size += f->io_size;
556 if (f->filetype == FIO_TYPE_FILE &&
557 (f->io_size + f->file_offset) > f->real_file_size &&
558 !(td->io_ops->flags & FIO_DISKLESSIO)) {
559 if (!td->o.create_on_open) {
561 extend_size += (f->io_size + f->file_offset);
563 f->real_file_size = f->io_size + f->file_offset;
564 f->flags |= FIO_FILE_EXTEND;
568 if (!td->o.size || td->o.size > total_size)
569 td->o.size = total_size;
572 * See if we need to extend some files
577 log_info("%s: Laying out IO file(s) (%u file(s) /"
578 " %LuMiB)\n", td->o.name, need_extend,
581 for_each_file(td, f, i) {
582 unsigned long long old_len, extend_len;
584 if (!(f->flags & FIO_FILE_EXTEND))
587 assert(f->filetype == FIO_TYPE_FILE);
588 f->flags &= ~FIO_FILE_EXTEND;
589 old_len = f->real_file_size;
590 extend_len = f->io_size + f->file_offset - old_len;
591 f->real_file_size = (f->io_size + f->file_offset);
592 err = extend_file(td, f);
596 err = __file_invalidate_cache(td, f, old_len,
609 if (!td->o.zone_size)
610 td->o.zone_size = td->o.size;
613 * iolog already set the total io size, if we read back
616 if (!td->o.read_iolog_file)
617 td->total_io_size = td->o.size * td->o.loops;
620 log_err("%s: you need to specify valid offset=\n", td->o.name);
624 int pre_read_files(struct thread_data *td)
629 dprint(FD_FILE, "pre_read files\n");
631 for_each_file(td, f, i) {
632 pre_read_file(td, f);
638 int init_random_map(struct thread_data *td)
640 unsigned long long blocks, num_maps;
644 if (td->o.norandommap || !td_random(td))
647 for_each_file(td, f, i) {
648 blocks = (f->real_file_size + td->o.rw_min_bs - 1) /
649 (unsigned long long) td->o.rw_min_bs;
650 num_maps = (blocks + BLOCKS_PER_MAP - 1) /
651 (unsigned long long) BLOCKS_PER_MAP;
652 f->file_map = smalloc(num_maps * sizeof(int));
654 f->num_maps = num_maps;
657 if (!td->o.softrandommap) {
658 log_err("fio: failed allocating random map. If running"
659 " a large number of jobs, try the 'norandommap'"
660 " option or set 'softrandommap'. Or give"
661 " a larger --alloc-size to fio.\n");
665 log_info("fio: file %s failed allocating random map. Running "
666 "job without.\n", f->file_name);
673 void close_files(struct thread_data *td)
678 for_each_file(td, f, i)
679 td_io_close_file(td, f);
682 void close_and_free_files(struct thread_data *td)
687 dprint(FD_FILE, "close files\n");
689 for_each_file(td, f, i) {
690 if (td->o.unlink && f->filetype == FIO_TYPE_FILE) {
691 dprint(FD_FILE, "free unlink %s\n", f->file_name);
692 unlink(f->file_name);
695 td_io_close_file(td, f);
708 td->o.filename = NULL;
715 static void get_file_type(struct fio_file *f)
719 if (!strcmp(f->file_name, "-"))
720 f->filetype = FIO_TYPE_PIPE;
722 f->filetype = FIO_TYPE_FILE;
724 if (!lstat(f->file_name, &sb)) {
725 if (S_ISBLK(sb.st_mode))
726 f->filetype = FIO_TYPE_BD;
727 else if (S_ISCHR(sb.st_mode))
728 f->filetype = FIO_TYPE_CHAR;
729 else if (S_ISFIFO(sb.st_mode))
730 f->filetype = FIO_TYPE_PIPE;
734 int add_file(struct thread_data *td, const char *fname)
736 int cur_files = td->files_index;
737 char file_name[PATH_MAX];
741 dprint(FD_FILE, "add file %s\n", fname);
743 f = smalloc(sizeof(*f));
745 log_err("fio: smalloc OOM\n");
751 if (td->files_size <= td->files_index) {
752 int new_size = td->o.nr_files + 1;
754 dprint(FD_FILE, "resize file array to %d files\n", new_size);
756 td->files = realloc(td->files, new_size * sizeof(f));
757 td->files_size = new_size;
759 td->files[cur_files] = f;
762 * init function, io engine may not be loaded yet
764 if (td->io_ops && (td->io_ops->flags & FIO_DISKLESSIO))
765 f->real_file_size = -1ULL;
768 len = sprintf(file_name, "%s/", td->o.directory);
770 sprintf(file_name + len, "%s", fname);
771 f->file_name = smalloc_strdup(file_name);
773 log_err("fio: smalloc OOM\n");
779 switch (td->o.file_lock_mode) {
782 case FILE_LOCK_READWRITE:
783 f->lock = fio_mutex_rw_init();
785 case FILE_LOCK_EXCLUSIVE:
786 f->lock = fio_mutex_init(1);
789 log_err("fio: unknown lock mode: %d\n", td->o.file_lock_mode);
794 if (f->filetype == FIO_TYPE_FILE)
795 td->nr_normal_files++;
797 dprint(FD_FILE, "file %p \"%s\" added at %d\n", f, f->file_name,
803 void get_file(struct fio_file *f)
805 dprint(FD_FILE, "get file %s, ref=%d\n", f->file_name, f->references);
806 assert(f->flags & FIO_FILE_OPEN);
810 int put_file(struct thread_data *td, struct fio_file *f)
812 int f_ret = 0, ret = 0;
814 dprint(FD_FILE, "put file %s, ref=%d\n", f->file_name, f->references);
816 if (!(f->flags & FIO_FILE_OPEN))
819 assert(f->references);
823 if (should_fsync(td) && td->o.fsync_on_close)
824 f_ret = fsync(f->fd);
826 if (td->io_ops->close_file)
827 ret = td->io_ops->close_file(td, f);
833 f->flags &= ~FIO_FILE_OPEN;
837 void lock_file(struct thread_data *td, struct fio_file *f, enum fio_ddir ddir)
839 if (!f->lock || td->o.file_lock_mode == FILE_LOCK_NONE)
842 if (f->lock_owner == td && f->lock_batch--)
845 if (td->o.file_lock_mode == FILE_LOCK_READWRITE) {
846 if (ddir == DDIR_READ)
847 fio_mutex_down_read(f->lock);
849 fio_mutex_down_write(f->lock);
850 } else if (td->o.file_lock_mode == FILE_LOCK_EXCLUSIVE)
851 fio_mutex_down(f->lock);
854 f->lock_batch = td->o.lockfile_batch;
858 void unlock_file(struct thread_data *td, struct fio_file *f)
860 if (!f->lock || td->o.file_lock_mode == FILE_LOCK_NONE)
865 if (td->o.file_lock_mode == FILE_LOCK_READWRITE) {
866 const int is_read = f->lock_ddir == DDIR_READ;
867 int val = fio_mutex_getval(f->lock);
869 if ((is_read && val == 1) || (!is_read && val == -1))
870 f->lock_owner = NULL;
873 fio_mutex_up_read(f->lock);
875 fio_mutex_up_write(f->lock);
876 } else if (td->o.file_lock_mode == FILE_LOCK_EXCLUSIVE) {
877 int val = fio_mutex_getval(f->lock);
880 f->lock_owner = NULL;
882 fio_mutex_up(f->lock);
886 void unlock_file_all(struct thread_data *td, struct fio_file *f)
888 if (f->lock_owner != td)
895 static int recurse_dir(struct thread_data *td, const char *dirname)
901 D = opendir(dirname);
903 char buf[FIO_VERROR_SIZE];
905 snprintf(buf, FIO_VERROR_SIZE - 1, "opendir(%s)", dirname);
906 td_verror(td, errno, buf);
910 while ((dir = readdir(D)) != NULL) {
911 char full_path[PATH_MAX];
914 if (!strcmp(dir->d_name, ".") || !strcmp(dir->d_name, ".."))
917 sprintf(full_path, "%s/%s", dirname, dir->d_name);
919 if (lstat(full_path, &sb) == -1) {
920 if (errno != ENOENT) {
921 td_verror(td, errno, "stat");
926 if (S_ISREG(sb.st_mode)) {
927 add_file(td, full_path);
931 if (!S_ISDIR(sb.st_mode))
934 ret = recurse_dir(td, full_path);
943 int add_dir_files(struct thread_data *td, const char *path)
945 int ret = recurse_dir(td, path);
948 log_info("fio: opendir added %d files\n", td->o.nr_files);
953 void dup_files(struct thread_data *td, struct thread_data *org)
958 dprint(FD_FILE, "dup files: %d\n", org->files_index);
963 td->files = malloc(org->files_index * sizeof(f));
965 for_each_file(org, f, i) {
966 struct fio_file *__f;
968 __f = smalloc(sizeof(*__f));
970 log_err("fio: smalloc OOM\n");
975 __f->file_name = smalloc_strdup(f->file_name);
976 if (!__f->file_name) {
977 log_err("fio: smalloc OOM\n");
981 __f->filetype = f->filetype;
989 * Returns the index that matches the filename, or -1 if not there
991 int get_fileno(struct thread_data *td, const char *fname)
996 for_each_file(td, f, i)
997 if (!strcmp(f->file_name, fname))
1004 * For log usage, where we add/open/close files automatically
1006 void free_release_files(struct thread_data *td)
1009 td->files_index = 0;
1010 td->nr_normal_files = 0;