16 static int extend_file(struct thread_data *td, struct fio_file *f)
18 int r, new_layout = 0, unlink_file = 0, flags;
19 unsigned long long left;
24 log_err("fio: refusing extend of file due to read-only\n");
29 * check if we need to lay the file out complete again. fio
30 * does that for operations involving reads, or for writes
31 * where overwrite is set
33 if (td_read(td) || (td_write(td) && td->o.overwrite) ||
34 (td_write(td) && td->io_ops->flags & FIO_NOEXTEND))
36 if (td_write(td) && !td->o.overwrite)
39 if (unlink_file || new_layout) {
40 dprint(FD_FILE, "layout unlink %s\n", f->file_name);
41 if ((unlink(f->file_name) < 0) && (errno != ENOENT)) {
42 td_verror(td, errno, "unlink");
47 flags = O_WRONLY | O_CREAT;
51 dprint(FD_FILE, "open file %s, flags %x\n", f->file_name, flags);
52 f->fd = open(f->file_name, flags, 0644);
54 td_verror(td, errno, "open");
61 dprint(FD_FILE, "truncate file %s, size %llu\n", f->file_name,
63 if (ftruncate(f->fd, f->real_file_size) == -1) {
64 td_verror(td, errno, "ftruncate");
68 dprint(FD_FILE, "fallocate file %s, size %llu\n", f->file_name,
70 if (posix_fallocate(f->fd, 0, f->real_file_size) < 0) {
71 td_verror(td, errno, "posix_fallocate");
75 b = malloc(td->o.max_bs[DDIR_WRITE]);
76 memset(b, 0, td->o.max_bs[DDIR_WRITE]);
78 left = f->real_file_size;
79 while (left && !td->terminate) {
80 bs = td->o.max_bs[DDIR_WRITE];
84 r = write(f->fd, b, bs);
91 td_verror(td, errno, "write");
93 td_verror(td, EIO, "write");
100 dprint(FD_FILE, "terminate unlink %s\n", f->file_name);
101 unlink(f->file_name);
102 } else if (td->o.create_fsync) {
103 if (fsync(f->fd) < 0) {
104 td_verror(td, errno, "fsync");
120 static unsigned long long get_rand_file_size(struct thread_data *td)
122 unsigned long long ret, size_d;
125 r = os_random_long(&td->file_size_state);
126 size_d = td->o.file_size_high - td->o.file_size_low;
127 ret = (unsigned long long) ((double) size_d * (r / (RAND_MAX + 1.0)));
128 ret += td->o.file_size_low;
129 ret -= (ret % td->o.rw_min_bs);
133 static int file_size(struct thread_data *td, struct fio_file *f)
137 if (fstat(f->fd, &st) == -1) {
138 td_verror(td, errno, "fstat");
142 f->real_file_size = st.st_size;
146 static int bdev_size(struct thread_data *td, struct fio_file *f)
148 unsigned long long bytes;
151 r = blockdev_size(f->fd, &bytes);
153 td_verror(td, r, "blockdev_size");
157 f->real_file_size = bytes;
161 static int get_file_size(struct thread_data *td, struct fio_file *f)
165 if (f->flags & FIO_SIZE_KNOWN)
168 if (f->filetype == FIO_TYPE_FILE)
169 ret = file_size(td, f);
170 else if (f->filetype == FIO_TYPE_BD)
171 ret = bdev_size(td, f);
173 f->real_file_size = -1;
178 if (f->file_offset > f->real_file_size) {
179 log_err("%s: offset extends end (%Lu > %Lu)\n", td->o.name,
180 f->file_offset, f->real_file_size);
184 f->flags |= FIO_SIZE_KNOWN;
188 int file_invalidate_cache(struct thread_data *td, struct fio_file *f)
192 dprint(FD_IO, "invalidate cache (%d)\n", td->o.odirect);
198 * FIXME: add blockdev flushing too
201 ret = madvise(f->mmap, f->io_size, MADV_DONTNEED);
202 else if (f->filetype == FIO_TYPE_FILE) {
203 ret = fadvise(f->fd, f->file_offset, f->io_size,
204 POSIX_FADV_DONTNEED);
205 } else if (f->filetype == FIO_TYPE_BD) {
206 ret = blockdev_invalidate_cache(f->fd);
207 if (ret < 0 && errno == EACCES && geteuid()) {
209 log_err("fio: only root may flush block "
210 "devices. Cache flush bypassed!\n");
215 } else if (f->filetype == FIO_TYPE_CHAR || f->filetype == FIO_TYPE_PIPE)
219 td_verror(td, errno, "invalidate_cache");
226 int generic_close_file(struct thread_data fio_unused *td, struct fio_file *f)
230 dprint(FD_FILE, "fd close %s\n", f->file_name);
234 if (close(f->fd) < 0)
241 static int file_lookup_open(struct fio_file *f, int flags)
243 struct fio_file *__f;
246 __f = lookup_file_hash(f->file_name);
248 dprint(FD_FILE, "found file in hash %s\n", f->file_name);
250 * racy, need the __f->lock locked
253 f->lock_owner = __f->lock_owner;
254 f->lock_batch = __f->lock_batch;
255 f->lock_ddir = __f->lock_ddir;
258 dprint(FD_FILE, "file not found in hash %s\n", f->file_name);
262 f->fd = open(f->file_name, flags, 0600);
266 int generic_open_file(struct thread_data *td, struct fio_file *f)
272 dprint(FD_FILE, "fd open %s\n", f->file_name);
274 if (!strcmp(f->file_name, "-")) {
276 log_err("fio: can't read/write to stdin/out\n");
282 * move output logging to stderr, if we are writing to stdout
289 flags |= OS_O_DIRECT;
292 if (f->filetype != FIO_TYPE_FILE)
300 if (f->filetype == FIO_TYPE_FILE)
304 f->fd = dup(STDOUT_FILENO);
306 from_hash = file_lookup_open(f, flags);
308 if (f->filetype == FIO_TYPE_CHAR && !read_only)
314 f->fd = dup(STDIN_FILENO);
316 from_hash = file_lookup_open(f, flags);
320 char buf[FIO_VERROR_SIZE];
323 if (errno == EPERM && (flags & O_NOATIME)) {
328 snprintf(buf, sizeof(buf) - 1, "open(%s)", f->file_name);
330 td_verror(td, __e, buf);
333 if (get_file_size(td, f))
336 if (!from_hash && f->fd != -1) {
337 if (add_file_hash(f)) {
341 * OK to ignore, we haven't done anything with it
343 ret = generic_close_file(td, f);
354 int open_files(struct thread_data *td)
360 dprint(FD_FILE, "open files\n");
362 for_each_file(td, f, i) {
363 err = td_io_open_file(td, f);
365 if (td->error == EMFILE) {
366 log_err("fio: limited open files to: %d\n",
368 td->o.open_files = td->nr_open_files;
375 if (td->o.open_files == td->nr_open_files)
382 for_each_file(td, f, i)
383 td_io_close_file(td, f);
389 * open/close all files, so that ->real_file_size gets set
391 static int get_file_sizes(struct thread_data *td)
397 for_each_file(td, f, i) {
398 dprint(FD_FILE, "get file size for %p/%d/%p\n", f, i,
401 if (td->io_ops->open_file(td, f)) {
402 if (td->error != ENOENT) {
403 log_err("%s\n", td->verror);
408 if (td->io_ops->close_file)
409 td->io_ops->close_file(td, f);
412 if (f->real_file_size == -1ULL && td->o.size)
413 f->real_file_size = td->o.size / td->o.nr_files;
420 * Open the files and setup files sizes, creating files if necessary.
422 int setup_files(struct thread_data *td)
424 unsigned long long total_size, extend_size;
427 int err = 0, need_extend;
429 dprint(FD_FILE, "setup files\n");
431 if (td->o.read_iolog_file)
435 * if ioengine defines a setup() method, it's responsible for
436 * opening the files and setting f->real_file_size to indicate
437 * the valid range for that file.
439 if (td->io_ops->setup)
440 err = td->io_ops->setup(td);
442 err = get_file_sizes(td);
448 * check sizes. if the files/devices do not exist and the size
449 * isn't passed to fio, abort.
452 for_each_file(td, f, i) {
453 if (f->real_file_size == -1ULL)
456 total_size += f->real_file_size;
460 * device/file sizes are zero and no size given, punt
462 if ((!total_size || total_size == -1ULL) && !td->o.size &&
463 !(td->io_ops->flags & FIO_NOIO) && !td->o.fill_device) {
464 log_err("%s: you need to specify size=\n", td->o.name);
465 td_verror(td, EINVAL, "total_file_size");
470 * now file sizes are known, so we can set ->io_size. if size= is
471 * not given, ->io_size is just equal to ->real_file_size. if size
472 * is given, ->io_size is size / nr_files.
474 extend_size = total_size = 0;
476 for_each_file(td, f, i) {
477 f->file_offset = td->o.start_offset;
479 if (!td->o.file_size_low) {
481 * no file size range given, file size is equal to
482 * total size divided by number of files. if that is
483 * zero, set it to the real file size.
485 f->io_size = td->o.size / td->o.nr_files;
487 f->io_size = f->real_file_size - f->file_offset;
488 } else if (f->real_file_size < td->o.file_size_low ||
489 f->real_file_size > td->o.file_size_high) {
490 if (f->file_offset > td->o.file_size_low)
493 * file size given. if it's fixed, use that. if it's a
494 * range, generate a random size in-between.
496 if (td->o.file_size_low == td->o.file_size_high) {
497 f->io_size = td->o.file_size_low
500 f->io_size = get_rand_file_size(td)
504 f->io_size = f->real_file_size - f->file_offset;
506 if (f->io_size == -1ULL)
509 total_size += f->io_size;
511 if (f->filetype == FIO_TYPE_FILE &&
512 (f->io_size + f->file_offset) > f->real_file_size &&
513 !(td->io_ops->flags & FIO_DISKLESSIO)) {
515 extend_size += (f->io_size + f->file_offset);
516 f->flags |= FIO_FILE_EXTEND;
520 if (!td->o.size || td->o.size > total_size)
521 td->o.size = total_size;
524 * See if we need to extend some files
528 log_info("%s: Laying out IO file(s) (%u file(s) / %LuMiB)\n",
529 td->o.name, need_extend, extend_size >> 20);
531 for_each_file(td, f, i) {
532 if (!(f->flags & FIO_FILE_EXTEND))
535 assert(f->filetype == FIO_TYPE_FILE);
536 f->flags &= ~FIO_FILE_EXTEND;
537 f->real_file_size = (f->io_size + f->file_offset);
538 err = extend_file(td, f);
548 if (!td->o.zone_size)
549 td->o.zone_size = td->o.size;
552 * iolog already set the total io size, if we read back
555 if (!td->o.read_iolog_file)
556 td->total_io_size = td->o.size * td->o.loops;
559 log_err("%s: you need to specify valid offset=\n", td->o.name);
563 int init_random_map(struct thread_data *td)
565 unsigned long long blocks, num_maps;
569 if (td->o.norandommap || !td_random(td))
572 for_each_file(td, f, i) {
573 blocks = (f->real_file_size + td->o.rw_min_bs - 1) /
574 (unsigned long long) td->o.rw_min_bs;
575 num_maps = (blocks + BLOCKS_PER_MAP - 1) /
576 (unsigned long long) BLOCKS_PER_MAP;
577 f->file_map = smalloc(num_maps * sizeof(long));
579 log_err("fio: failed allocating random map. If running"
580 " a large number of jobs, try the 'norandommap'"
584 f->num_maps = num_maps;
590 void close_files(struct thread_data *td)
595 for_each_file(td, f, i)
596 td_io_close_file(td, f);
599 void close_and_free_files(struct thread_data *td)
604 dprint(FD_FILE, "close files\n");
606 for_each_file(td, f, i) {
607 if (td->o.unlink && f->filetype == FIO_TYPE_FILE) {
608 dprint(FD_FILE, "free unlink %s\n", f->file_name);
609 unlink(f->file_name);
612 td_io_close_file(td, f);
624 td->o.filename = NULL;
631 static void get_file_type(struct fio_file *f)
635 if (!strcmp(f->file_name, "-"))
636 f->filetype = FIO_TYPE_PIPE;
638 f->filetype = FIO_TYPE_FILE;
640 if (!lstat(f->file_name, &sb)) {
641 if (S_ISBLK(sb.st_mode))
642 f->filetype = FIO_TYPE_BD;
643 else if (S_ISCHR(sb.st_mode))
644 f->filetype = FIO_TYPE_CHAR;
645 else if (S_ISFIFO(sb.st_mode))
646 f->filetype = FIO_TYPE_PIPE;
650 int add_file(struct thread_data *td, const char *fname)
652 int cur_files = td->files_index;
653 char file_name[PATH_MAX];
657 dprint(FD_FILE, "add file %s\n", fname);
659 f = smalloc(sizeof(*f));
662 dprint(FD_FILE, "resize file array to %d files\n", cur_files + 1);
664 td->files = realloc(td->files, (cur_files + 1) * sizeof(f));
665 td->files[cur_files] = f;
668 * init function, io engine may not be loaded yet
670 if (td->io_ops && (td->io_ops->flags & FIO_DISKLESSIO))
671 f->real_file_size = -1ULL;
674 len = sprintf(file_name, "%s/", td->o.directory);
676 sprintf(file_name + len, "%s", fname);
677 f->file_name = smalloc_strdup(file_name);
681 switch (td->o.file_lock_mode) {
684 case FILE_LOCK_READWRITE:
685 f->lock = fio_mutex_rw_init();
687 case FILE_LOCK_EXCLUSIVE:
688 f->lock = fio_mutex_init(1);
691 log_err("fio: unknown lock mode: %d\n", td->o.file_lock_mode);
696 if (f->filetype == FIO_TYPE_FILE)
697 td->nr_normal_files++;
699 dprint(FD_FILE, "file %p \"%s\" added at %d\n", f, f->file_name,
705 void get_file(struct fio_file *f)
707 dprint(FD_FILE, "get file %s, ref=%d\n", f->file_name, f->references);
708 assert(f->flags & FIO_FILE_OPEN);
712 int put_file(struct thread_data *td, struct fio_file *f)
714 int f_ret = 0, ret = 0;
716 dprint(FD_FILE, "put file %s, ref=%d\n", f->file_name, f->references);
718 if (!(f->flags & FIO_FILE_OPEN))
721 assert(f->references);
725 if (should_fsync(td) && td->o.fsync_on_close)
726 f_ret = fsync(f->fd);
728 if (td->io_ops->close_file)
729 ret = td->io_ops->close_file(td, f);
735 f->flags &= ~FIO_FILE_OPEN;
739 void lock_file(struct thread_data *td, struct fio_file *f, enum fio_ddir ddir)
741 if (!f->lock || td->o.file_lock_mode == FILE_LOCK_NONE)
744 if (f->lock_owner == td && f->lock_batch--)
747 if (td->o.file_lock_mode == FILE_LOCK_READWRITE) {
748 if (ddir == DDIR_READ)
749 fio_mutex_down_read(f->lock);
751 fio_mutex_down_write(f->lock);
752 } else if (td->o.file_lock_mode == FILE_LOCK_EXCLUSIVE)
753 fio_mutex_down(f->lock);
756 f->lock_batch = td->o.lockfile_batch;
760 void unlock_file(struct thread_data *td, struct fio_file *f)
762 if (!f->lock || td->o.file_lock_mode == FILE_LOCK_NONE)
767 if (td->o.file_lock_mode == FILE_LOCK_READWRITE) {
768 const int is_read = f->lock_ddir == DDIR_READ;
769 int val = fio_mutex_getval(f->lock);
771 if ((is_read && val == 1) || (!is_read && val == -1))
772 f->lock_owner = NULL;
775 fio_mutex_up_read(f->lock);
777 fio_mutex_up_write(f->lock);
778 } else if (td->o.file_lock_mode == FILE_LOCK_EXCLUSIVE) {
779 int val = fio_mutex_getval(f->lock);
782 f->lock_owner = NULL;
784 fio_mutex_up(f->lock);
788 void unlock_file_all(struct thread_data *td, struct fio_file *f)
790 if (f->lock_owner != td)
797 static int recurse_dir(struct thread_data *td, const char *dirname)
803 D = opendir(dirname);
805 char buf[FIO_VERROR_SIZE];
807 snprintf(buf, FIO_VERROR_SIZE - 1, "opendir(%s)", dirname);
808 td_verror(td, errno, buf);
812 while ((dir = readdir(D)) != NULL) {
813 char full_path[PATH_MAX];
816 if (!strcmp(dir->d_name, ".") || !strcmp(dir->d_name, ".."))
819 sprintf(full_path, "%s/%s", dirname, dir->d_name);
821 if (lstat(full_path, &sb) == -1) {
822 if (errno != ENOENT) {
823 td_verror(td, errno, "stat");
828 if (S_ISREG(sb.st_mode)) {
829 add_file(td, full_path);
833 if (!S_ISDIR(sb.st_mode))
836 ret = recurse_dir(td, full_path);
845 int add_dir_files(struct thread_data *td, const char *path)
847 int ret = recurse_dir(td, path);
850 log_info("fio: opendir added %d files\n", td->o.nr_files);
855 void dup_files(struct thread_data *td, struct thread_data *org)
860 dprint(FD_FILE, "dup files: %d\n", org->files_index);
865 td->files = malloc(org->files_index * sizeof(f));
867 for_each_file(org, f, i) {
868 struct fio_file *__f;
870 __f = smalloc(sizeof(*__f));
873 __f->file_name = smalloc_strdup(f->file_name);
880 * Returns the index that matches the filename, or -1 if not there
882 int get_fileno(struct thread_data *td, const char *fname)
887 for_each_file(td, f, i)
888 if (!strcmp(f->file_name, fname))
895 * For log usage, where we add/open/close files automatically
897 void free_release_files(struct thread_data *td)
901 td->nr_normal_files = 0;