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))
35 if (td_write(td) && !td->o.overwrite)
38 if (unlink_file || new_layout) {
39 if ((unlink(f->file_name) < 0) && (errno != ENOENT)) {
40 td_verror(td, errno, "unlink");
45 flags = O_WRONLY | O_CREAT;
49 dprint(FD_FILE, "open file %s, flags %x\n", f->file_name, flags);
50 f->fd = open(f->file_name, flags, 0644);
52 td_verror(td, errno, "open");
59 dprint(FD_FILE, "truncate file %s, size %llu\n", f->file_name,
61 if (ftruncate(f->fd, f->real_file_size) == -1) {
62 td_verror(td, errno, "ftruncate");
66 dprint(FD_FILE, "fallocate file %s, size %llu\n", f->file_name,
68 if (posix_fallocate(f->fd, 0, f->real_file_size) < 0) {
69 td_verror(td, errno, "posix_fallocate");
73 b = malloc(td->o.max_bs[DDIR_WRITE]);
74 memset(b, 0, td->o.max_bs[DDIR_WRITE]);
76 left = f->real_file_size;
77 while (left && !td->terminate) {
78 bs = td->o.max_bs[DDIR_WRITE];
82 r = write(f->fd, b, bs);
89 td_verror(td, errno, "write");
91 td_verror(td, EIO, "write");
99 else if (td->o.create_fsync) {
100 if (fsync(f->fd) < 0) {
101 td_verror(td, errno, "fsync");
117 static unsigned long long get_rand_file_size(struct thread_data *td)
119 unsigned long long ret, size_d;
122 r = os_random_long(&td->file_size_state);
123 size_d = td->o.file_size_high - td->o.file_size_low;
124 ret = (unsigned long long) ((double) size_d * (r / (RAND_MAX + 1.0)));
125 ret += td->o.file_size_low;
126 ret -= (ret % td->o.rw_min_bs);
130 static int file_size(struct thread_data *td, struct fio_file *f)
134 if (fstat(f->fd, &st) == -1) {
135 td_verror(td, errno, "fstat");
139 f->real_file_size = st.st_size;
143 static int bdev_size(struct thread_data *td, struct fio_file *f)
145 unsigned long long bytes;
148 r = blockdev_size(f->fd, &bytes);
150 td_verror(td, r, "blockdev_size");
154 f->real_file_size = bytes;
158 static int get_file_size(struct thread_data *td, struct fio_file *f)
162 if (f->flags & FIO_SIZE_KNOWN)
165 if (f->filetype == FIO_TYPE_FILE)
166 ret = file_size(td, f);
167 else if (f->filetype == FIO_TYPE_BD)
168 ret = bdev_size(td, f);
170 f->real_file_size = -1;
175 if (f->file_offset > f->real_file_size) {
176 log_err("%s: offset extends end (%Lu > %Lu)\n", td->o.name,
177 f->file_offset, f->real_file_size);
181 f->flags |= FIO_SIZE_KNOWN;
185 int file_invalidate_cache(struct thread_data *td, struct fio_file *f)
189 dprint(FD_IO, "invalidate cache (%d)\n", td->o.odirect);
195 * FIXME: add blockdev flushing too
198 ret = madvise(f->mmap, f->io_size, MADV_DONTNEED);
199 else if (f->filetype == FIO_TYPE_FILE) {
200 ret = fadvise(f->fd, f->file_offset, f->io_size,
201 POSIX_FADV_DONTNEED);
202 } else if (f->filetype == FIO_TYPE_BD) {
203 ret = blockdev_invalidate_cache(f->fd);
204 if (ret < 0 && errno == EACCES && geteuid()) {
206 log_err("fio: only root may flush block "
207 "devices. Cache flush bypassed!\n");
212 } else if (f->filetype == FIO_TYPE_CHAR || f->filetype == FIO_TYPE_PIPE)
216 td_verror(td, errno, "invalidate_cache");
223 int generic_close_file(struct thread_data fio_unused *td, struct fio_file *f)
227 dprint(FD_FILE, "fd close %s\n", f->file_name);
231 if (close(f->fd) < 0)
238 static int file_lookup_open(struct fio_file *f, int flags)
240 struct fio_file *__f;
243 __f = lookup_file_hash(f->file_name);
245 dprint(FD_FILE, "found file in hash %s\n", f->file_name);
247 * racy, need the __f->lock locked
250 f->lock_owner = __f->lock_owner;
251 f->lock_batch = __f->lock_batch;
252 f->lock_ddir = __f->lock_ddir;
255 dprint(FD_FILE, "file not found in hash %s\n", f->file_name);
259 f->fd = open(f->file_name, flags, 0600);
263 int generic_open_file(struct thread_data *td, struct fio_file *f)
269 dprint(FD_FILE, "fd open %s\n", f->file_name);
271 if (!strcmp(f->file_name, "-")) {
273 log_err("fio: can't read/write to stdin/out\n");
279 * move output logging to stderr, if we are writing to stdout
286 flags |= OS_O_DIRECT;
289 if (f->filetype != FIO_TYPE_FILE)
297 if (f->filetype == FIO_TYPE_FILE)
301 f->fd = dup(STDOUT_FILENO);
303 from_hash = file_lookup_open(f, flags);
305 if (f->filetype == FIO_TYPE_CHAR && !read_only)
311 f->fd = dup(STDIN_FILENO);
313 from_hash = file_lookup_open(f, flags);
317 char buf[FIO_VERROR_SIZE];
320 if (errno == EPERM && (flags & O_NOATIME)) {
325 snprintf(buf, sizeof(buf) - 1, "open(%s)", f->file_name);
327 td_verror(td, __e, buf);
330 if (get_file_size(td, f))
333 if (!from_hash && f->fd != -1) {
334 if (add_file_hash(f)) {
338 * OK to ignore, we haven't done anything with it
340 ret = generic_close_file(td, f);
351 int open_files(struct thread_data *td)
357 dprint(FD_FILE, "open files\n");
359 for_each_file(td, f, i) {
360 err = td_io_open_file(td, f);
362 if (td->error == EMFILE) {
363 log_err("fio: limited open files to: %d\n",
365 td->o.open_files = td->nr_open_files;
372 if (td->o.open_files == td->nr_open_files)
379 for_each_file(td, f, i)
380 td_io_close_file(td, f);
386 * open/close all files, so that ->real_file_size gets set
388 static int get_file_sizes(struct thread_data *td)
394 for_each_file(td, f, i) {
395 dprint(FD_FILE, "get file size for %p/%d/%p\n", f, i,
398 if (td->io_ops->open_file(td, f)) {
399 if (td->error != ENOENT) {
400 log_err("%s\n", td->verror);
405 if (td->io_ops->close_file)
406 td->io_ops->close_file(td, f);
409 if (f->real_file_size == -1ULL && td->o.size)
410 f->real_file_size = td->o.size / td->o.nr_files;
417 * Open the files and setup files sizes, creating files if necessary.
419 int setup_files(struct thread_data *td)
421 unsigned long long total_size, extend_size;
424 int err = 0, need_extend;
426 dprint(FD_FILE, "setup files\n");
429 * if ioengine defines a setup() method, it's responsible for
430 * opening the files and setting f->real_file_size to indicate
431 * the valid range for that file.
433 if (td->io_ops->setup)
434 err = td->io_ops->setup(td);
436 err = get_file_sizes(td);
442 * check sizes. if the files/devices do not exist and the size
443 * isn't passed to fio, abort.
446 for_each_file(td, f, i) {
447 if (f->real_file_size == -1ULL)
450 total_size += f->real_file_size;
454 * device/file sizes are zero and no size given, punt
456 if ((!total_size || total_size == -1ULL) && !td->o.size &&
457 !(td->io_ops->flags & FIO_NOIO) && !td->o.fill_device) {
458 log_err("%s: you need to specify size=\n", td->o.name);
459 td_verror(td, EINVAL, "total_file_size");
464 * now file sizes are known, so we can set ->io_size. if size= is
465 * not given, ->io_size is just equal to ->real_file_size. if size
466 * is given, ->io_size is size / nr_files.
468 extend_size = total_size = 0;
470 for_each_file(td, f, i) {
471 f->file_offset = td->o.start_offset;
473 if (!td->o.file_size_low) {
475 * no file size range given, file size is equal to
476 * total size divided by number of files. if that is
477 * zero, set it to the real file size.
479 f->io_size = td->o.size / td->o.nr_files;
481 f->io_size = f->real_file_size - f->file_offset;
482 } else if (f->real_file_size < td->o.file_size_low ||
483 f->real_file_size > td->o.file_size_high) {
484 if (f->file_offset > td->o.file_size_low)
487 * file size given. if it's fixed, use that. if it's a
488 * range, generate a random size in-between.
490 if (td->o.file_size_low == td->o.file_size_high) {
491 f->io_size = td->o.file_size_low
494 f->io_size = get_rand_file_size(td)
498 f->io_size = f->real_file_size - f->file_offset;
500 if (f->io_size == -1ULL)
503 total_size += f->io_size;
505 if (f->filetype == FIO_TYPE_FILE &&
506 (f->io_size + f->file_offset) > f->real_file_size &&
507 !(td->io_ops->flags & FIO_DISKLESSIO)) {
509 extend_size += (f->io_size + f->file_offset);
510 f->flags |= FIO_FILE_EXTEND;
514 if (!td->o.size || td->o.size > total_size)
515 td->o.size = total_size;
518 * See if we need to extend some files
522 log_info("%s: Laying out IO file(s) (%u file(s) / %LuMiB)\n",
523 td->o.name, need_extend, extend_size >> 20);
525 for_each_file(td, f, i) {
526 if (!(f->flags & FIO_FILE_EXTEND))
529 assert(f->filetype == FIO_TYPE_FILE);
530 f->flags &= ~FIO_FILE_EXTEND;
531 f->real_file_size = (f->io_size + f->file_offset);
532 err = extend_file(td, f);
542 if (!td->o.zone_size)
543 td->o.zone_size = td->o.size;
546 * iolog already set the total io size, if we read back
549 if (!td->o.read_iolog_file)
550 td->total_io_size = td->o.size * td->o.loops;
553 log_err("%s: you need to specify valid offset=\n", td->o.name);
557 int init_random_map(struct thread_data *td)
559 unsigned long long blocks, num_maps;
563 if (td->o.norandommap || !td_random(td))
566 for_each_file(td, f, i) {
567 blocks = (f->real_file_size + td->o.rw_min_bs - 1) /
568 (unsigned long long) td->o.rw_min_bs;
569 num_maps = (blocks + BLOCKS_PER_MAP - 1) /
570 (unsigned long long) BLOCKS_PER_MAP;
571 f->file_map = smalloc(num_maps * sizeof(long));
573 log_err("fio: failed allocating random map. If running"
574 " a large number of jobs, try the 'norandommap'"
578 f->num_maps = num_maps;
584 void close_files(struct thread_data *td)
589 for_each_file(td, f, i)
590 td_io_close_file(td, f);
593 void close_and_free_files(struct thread_data *td)
598 dprint(FD_FILE, "close files\n");
600 for_each_file(td, f, i) {
601 if (td->o.unlink && f->filetype == FIO_TYPE_FILE)
602 unlink(f->file_name);
604 td_io_close_file(td, f);
616 td->o.filename = NULL;
623 static void get_file_type(struct fio_file *f)
627 if (!strcmp(f->file_name, "-"))
628 f->filetype = FIO_TYPE_PIPE;
630 f->filetype = FIO_TYPE_FILE;
632 if (!lstat(f->file_name, &sb)) {
633 if (S_ISBLK(sb.st_mode))
634 f->filetype = FIO_TYPE_BD;
635 else if (S_ISCHR(sb.st_mode))
636 f->filetype = FIO_TYPE_CHAR;
637 else if (S_ISFIFO(sb.st_mode))
638 f->filetype = FIO_TYPE_PIPE;
642 int add_file(struct thread_data *td, const char *fname)
644 int cur_files = td->files_index;
645 char file_name[PATH_MAX];
649 dprint(FD_FILE, "add file %s\n", fname);
651 f = smalloc(sizeof(*f));
654 dprint(FD_FILE, "resize file array to %d files\n", cur_files + 1);
656 td->files = realloc(td->files, (cur_files + 1) * sizeof(f));
657 td->files[cur_files] = f;
660 * init function, io engine may not be loaded yet
662 if (td->io_ops && (td->io_ops->flags & FIO_DISKLESSIO))
663 f->real_file_size = -1ULL;
666 len = sprintf(file_name, "%s/", td->o.directory);
668 sprintf(file_name + len, "%s", fname);
669 f->file_name = smalloc_strdup(file_name);
673 switch (td->o.file_lock_mode) {
676 case FILE_LOCK_READWRITE:
677 f->lock = fio_mutex_rw_init();
679 case FILE_LOCK_EXCLUSIVE:
680 f->lock = fio_mutex_init(1);
683 log_err("fio: unknown lock mode: %d\n", td->o.file_lock_mode);
688 if (f->filetype == FIO_TYPE_FILE)
689 td->nr_normal_files++;
691 dprint(FD_FILE, "file %p \"%s\" added at %d\n", f, f->file_name,
697 void get_file(struct fio_file *f)
699 dprint(FD_FILE, "get file %s, ref=%d\n", f->file_name, f->references);
700 assert(f->flags & FIO_FILE_OPEN);
704 int put_file(struct thread_data *td, struct fio_file *f)
706 int f_ret = 0, ret = 0;
708 dprint(FD_FILE, "put file %s, ref=%d\n", f->file_name, f->references);
710 if (!(f->flags & FIO_FILE_OPEN))
713 assert(f->references);
717 if (should_fsync(td) && td->o.fsync_on_close)
718 f_ret = fsync(f->fd);
720 if (td->io_ops->close_file)
721 ret = td->io_ops->close_file(td, f);
727 f->flags &= ~FIO_FILE_OPEN;
731 void lock_file(struct thread_data *td, struct fio_file *f, enum fio_ddir ddir)
733 if (!f->lock || td->o.file_lock_mode == FILE_LOCK_NONE)
736 if (f->lock_owner == td && f->lock_batch--)
739 if (td->o.file_lock_mode == FILE_LOCK_READWRITE) {
740 if (ddir == DDIR_READ)
741 fio_mutex_down_read(f->lock);
743 fio_mutex_down_write(f->lock);
744 } else if (td->o.file_lock_mode == FILE_LOCK_EXCLUSIVE)
745 fio_mutex_down(f->lock);
748 f->lock_batch = td->o.lockfile_batch;
752 void unlock_file(struct thread_data *td, struct fio_file *f)
754 if (!f->lock || td->o.file_lock_mode == FILE_LOCK_NONE)
759 if (td->o.file_lock_mode == FILE_LOCK_READWRITE) {
760 const int is_read = f->lock_ddir == DDIR_READ;
761 int val = fio_mutex_getval(f->lock);
763 if ((is_read && val == 1) || (!is_read && val == -1))
764 f->lock_owner = NULL;
767 fio_mutex_up_read(f->lock);
769 fio_mutex_up_write(f->lock);
770 } else if (td->o.file_lock_mode == FILE_LOCK_EXCLUSIVE) {
771 int val = fio_mutex_getval(f->lock);
774 f->lock_owner = NULL;
776 fio_mutex_up(f->lock);
780 void unlock_file_all(struct thread_data *td, struct fio_file *f)
782 if (f->lock_owner != td)
789 static int recurse_dir(struct thread_data *td, const char *dirname)
795 D = opendir(dirname);
797 char buf[FIO_VERROR_SIZE];
799 snprintf(buf, FIO_VERROR_SIZE - 1, "opendir(%s)", dirname);
800 td_verror(td, errno, buf);
804 while ((dir = readdir(D)) != NULL) {
805 char full_path[PATH_MAX];
808 if (!strcmp(dir->d_name, ".") || !strcmp(dir->d_name, ".."))
811 sprintf(full_path, "%s/%s", dirname, dir->d_name);
813 if (lstat(full_path, &sb) == -1) {
814 if (errno != ENOENT) {
815 td_verror(td, errno, "stat");
820 if (S_ISREG(sb.st_mode)) {
821 add_file(td, full_path);
825 if (!S_ISDIR(sb.st_mode))
828 ret = recurse_dir(td, full_path);
837 int add_dir_files(struct thread_data *td, const char *path)
839 int ret = recurse_dir(td, path);
842 log_info("fio: opendir added %d files\n", td->o.nr_files);
847 void dup_files(struct thread_data *td, struct thread_data *org)
852 dprint(FD_FILE, "dup files: %d\n", org->files_index);
857 td->files = malloc(org->files_index * sizeof(f));
859 for_each_file(org, f, i) {
860 struct fio_file *__f;
862 __f = smalloc(sizeof(*__f));
865 __f->file_name = smalloc_strdup(f->file_name);
872 * Returns the index that matches the filename, or -1 if not there
874 int get_fileno(struct thread_data *td, const char *fname)
879 for_each_file(td, f, i)
880 if (!strcmp(f->file_name, fname))
887 * For log usage, where we add/open/close files automatically
889 void free_release_files(struct thread_data *td)
893 td->nr_normal_files = 0;