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);
157 td_verror(td, EIO, "pre_read");
162 td_set_runstate(td, old_runstate);
165 td->io_ops->close_file(td, f);
170 static unsigned long long get_rand_file_size(struct thread_data *td)
172 unsigned long long ret, sized;
175 r = os_random_long(&td->file_size_state);
176 sized = td->o.file_size_high - td->o.file_size_low;
177 ret = (unsigned long long) ((double) sized * (r / (OS_RAND_MAX + 1.0)));
178 ret += td->o.file_size_low;
179 ret -= (ret % td->o.rw_min_bs);
183 static int file_size(struct thread_data *td, struct fio_file *f)
187 if (stat(f->file_name, &st) == -1) {
188 td_verror(td, errno, "fstat");
192 f->real_file_size = st.st_size;
196 static int bdev_size(struct thread_data *td, struct fio_file *f)
198 unsigned long long bytes;
201 if (td->io_ops->open_file(td, f)) {
202 log_err("fio: failed opening blockdev %s for size check\n",
207 r = blockdev_size(f->fd, &bytes);
209 td_verror(td, r, "blockdev_size");
214 log_err("%s: zero sized block device?\n", f->file_name);
218 f->real_file_size = bytes;
221 td->io_ops->close_file(td, f);
225 static int get_file_size(struct thread_data *td, struct fio_file *f)
229 if (f->flags & FIO_SIZE_KNOWN)
232 if (f->filetype == FIO_TYPE_FILE)
233 ret = file_size(td, f);
234 else if (f->filetype == FIO_TYPE_BD)
235 ret = bdev_size(td, f);
237 f->real_file_size = -1;
242 if (f->file_offset > f->real_file_size) {
243 log_err("%s: offset extends end (%Lu > %Lu)\n", td->o.name,
244 f->file_offset, f->real_file_size);
248 f->flags |= FIO_SIZE_KNOWN;
252 static int __file_invalidate_cache(struct thread_data *td, struct fio_file *f,
253 unsigned long long off,
254 unsigned long long len)
261 off = f->file_offset;
263 dprint(FD_IO, "invalidate cache %s: %llu/%llu\n", f->file_name, off,
267 * FIXME: add blockdev flushing too
270 ret = madvise(f->mmap, len, MADV_DONTNEED);
271 else if (f->filetype == FIO_TYPE_FILE) {
272 ret = fadvise(f->fd, off, len, POSIX_FADV_DONTNEED);
273 } else if (f->filetype == FIO_TYPE_BD) {
274 ret = blockdev_invalidate_cache(f->fd);
275 if (ret < 0 && errno == EACCES && geteuid()) {
277 log_err("fio: only root may flush block "
278 "devices. Cache flush bypassed!\n");
283 } else if (f->filetype == FIO_TYPE_CHAR || f->filetype == FIO_TYPE_PIPE)
287 td_verror(td, errno, "invalidate_cache");
289 } else if (ret > 0) {
290 td_verror(td, ret, "invalidate_cache");
298 int file_invalidate_cache(struct thread_data *td, struct fio_file *f)
300 if (!(f->flags & FIO_FILE_OPEN))
303 return __file_invalidate_cache(td, f, -1, -1);
306 int generic_close_file(struct thread_data fio_unused *td, struct fio_file *f)
310 dprint(FD_FILE, "fd close %s\n", f->file_name);
314 if (close(f->fd) < 0)
321 static int file_lookup_open(struct fio_file *f, int flags)
323 struct fio_file *__f;
326 __f = lookup_file_hash(f->file_name);
328 dprint(FD_FILE, "found file in hash %s\n", f->file_name);
330 * racy, need the __f->lock locked
333 f->lock_owner = __f->lock_owner;
334 f->lock_batch = __f->lock_batch;
335 f->lock_ddir = __f->lock_ddir;
338 dprint(FD_FILE, "file not found in hash %s\n", f->file_name);
342 f->fd = open(f->file_name, flags, 0600);
346 int generic_open_file(struct thread_data *td, struct fio_file *f)
352 dprint(FD_FILE, "fd open %s\n", f->file_name);
354 if (!strcmp(f->file_name, "-")) {
356 log_err("fio: can't read/write to stdin/out\n");
362 * move output logging to stderr, if we are writing to stdout
369 flags |= OS_O_DIRECT;
372 if (f->filetype != FIO_TYPE_FILE)
373 flags |= FIO_O_NOATIME;
374 if (td->o.create_on_open)
382 if (f->filetype == FIO_TYPE_FILE)
386 f->fd = dup(STDOUT_FILENO);
388 from_hash = file_lookup_open(f, flags);
390 if (f->filetype == FIO_TYPE_CHAR && !read_only)
396 f->fd = dup(STDIN_FILENO);
398 from_hash = file_lookup_open(f, flags);
402 char buf[FIO_VERROR_SIZE];
405 if (errno == EPERM && (flags & FIO_O_NOATIME)) {
406 flags &= ~FIO_O_NOATIME;
410 snprintf(buf, sizeof(buf) - 1, "open(%s)", f->file_name);
412 td_verror(td, __e, buf);
415 if (!from_hash && f->fd != -1) {
416 if (add_file_hash(f)) {
420 * OK to ignore, we haven't done anything with it
422 ret = generic_close_file(td, f);
430 int generic_get_file_size(struct thread_data *td, struct fio_file *f)
432 return get_file_size(td, f);
436 * open/close all files, so that ->real_file_size gets set
438 static int get_file_sizes(struct thread_data *td)
444 for_each_file(td, f, i) {
445 dprint(FD_FILE, "get file size for %p/%d/%p\n", f, i,
448 if (td_io_get_file_size(td, f)) {
449 if (td->error != ENOENT) {
450 log_err("%s\n", td->verror);
456 if (f->real_file_size == -1ULL && td->o.size)
457 f->real_file_size = td->o.size / td->o.nr_files;
464 * Open the files and setup files sizes, creating files if necessary.
466 int setup_files(struct thread_data *td)
468 unsigned long long total_size, extend_size;
471 int err = 0, need_extend;
473 dprint(FD_FILE, "setup files\n");
475 if (td->o.read_iolog_file)
479 * if ioengine defines a setup() method, it's responsible for
480 * opening the files and setting f->real_file_size to indicate
481 * the valid range for that file.
483 if (td->io_ops->setup)
484 err = td->io_ops->setup(td);
486 err = get_file_sizes(td);
492 * check sizes. if the files/devices do not exist and the size
493 * isn't passed to fio, abort.
496 for_each_file(td, f, i) {
497 if (f->real_file_size == -1ULL)
500 total_size += f->real_file_size;
504 * device/file sizes are zero and no size given, punt
506 if ((!total_size || total_size == -1ULL) && !td->o.size &&
507 !(td->io_ops->flags & FIO_NOIO) && !td->o.fill_device) {
508 log_err("%s: you need to specify size=\n", td->o.name);
509 td_verror(td, EINVAL, "total_file_size");
514 * now file sizes are known, so we can set ->io_size. if size= is
515 * not given, ->io_size is just equal to ->real_file_size. if size
516 * is given, ->io_size is size / nr_files.
518 extend_size = total_size = 0;
520 for_each_file(td, f, i) {
521 f->file_offset = td->o.start_offset;
523 if (!td->o.file_size_low) {
525 * no file size range given, file size is equal to
526 * total size divided by number of files. if that is
527 * zero, set it to the real file size.
529 f->io_size = td->o.size / td->o.nr_files;
531 f->io_size = f->real_file_size - f->file_offset;
532 } else if (f->real_file_size < td->o.file_size_low ||
533 f->real_file_size > td->o.file_size_high) {
534 if (f->file_offset > td->o.file_size_low)
537 * file size given. if it's fixed, use that. if it's a
538 * range, generate a random size in-between.
540 if (td->o.file_size_low == td->o.file_size_high) {
541 f->io_size = td->o.file_size_low
544 f->io_size = get_rand_file_size(td)
548 f->io_size = f->real_file_size - f->file_offset;
550 if (f->io_size == -1ULL)
553 total_size += f->io_size;
555 if (f->filetype == FIO_TYPE_FILE &&
556 (f->io_size + f->file_offset) > f->real_file_size &&
557 !(td->io_ops->flags & FIO_DISKLESSIO)) {
558 if (!td->o.create_on_open) {
560 extend_size += (f->io_size + f->file_offset);
562 f->real_file_size = f->io_size + f->file_offset;
563 f->flags |= FIO_FILE_EXTEND;
567 if (!td->o.size || td->o.size > total_size)
568 td->o.size = total_size;
571 * See if we need to extend some files
576 log_info("%s: Laying out IO file(s) (%u file(s) /"
577 " %LuMiB)\n", td->o.name, need_extend,
580 for_each_file(td, f, i) {
581 unsigned long long old_len, extend_len;
583 if (!(f->flags & FIO_FILE_EXTEND))
586 assert(f->filetype == FIO_TYPE_FILE);
587 f->flags &= ~FIO_FILE_EXTEND;
588 old_len = f->real_file_size;
589 extend_len = f->io_size + f->file_offset - old_len;
590 f->real_file_size = (f->io_size + f->file_offset);
591 err = extend_file(td, f);
595 err = __file_invalidate_cache(td, f, old_len,
608 if (!td->o.zone_size)
609 td->o.zone_size = td->o.size;
612 * iolog already set the total io size, if we read back
615 if (!td->o.read_iolog_file)
616 td->total_io_size = td->o.size * td->o.loops;
619 log_err("%s: you need to specify valid offset=\n", td->o.name);
623 int pre_read_files(struct thread_data *td)
628 dprint(FD_FILE, "pre_read files\n");
630 for_each_file(td, f, i) {
631 pre_read_file(td, f);
637 int init_random_map(struct thread_data *td)
639 unsigned long long blocks, num_maps;
643 if (td->o.norandommap || !td_random(td))
646 for_each_file(td, f, i) {
647 blocks = (f->real_file_size + td->o.rw_min_bs - 1) /
648 (unsigned long long) td->o.rw_min_bs;
649 num_maps = (blocks + BLOCKS_PER_MAP - 1) /
650 (unsigned long long) BLOCKS_PER_MAP;
651 f->file_map = smalloc(num_maps * sizeof(int));
653 f->num_maps = num_maps;
656 if (!td->o.softrandommap) {
657 log_err("fio: failed allocating random map. If running"
658 " a large number of jobs, try the 'norandommap'"
659 " option or set 'softrandommap'. Or give"
660 " a larger --alloc-size to fio.\n");
664 log_info("fio: file %s failed allocating random map. Running "
665 "job without.\n", f->file_name);
672 void close_files(struct thread_data *td)
677 for_each_file(td, f, i)
678 td_io_close_file(td, f);
681 void close_and_free_files(struct thread_data *td)
686 dprint(FD_FILE, "close files\n");
688 for_each_file(td, f, i) {
689 if (td->o.unlink && f->filetype == FIO_TYPE_FILE) {
690 dprint(FD_FILE, "free unlink %s\n", f->file_name);
691 unlink(f->file_name);
694 td_io_close_file(td, f);
707 td->o.filename = NULL;
714 static void get_file_type(struct fio_file *f)
718 if (!strcmp(f->file_name, "-"))
719 f->filetype = FIO_TYPE_PIPE;
721 f->filetype = FIO_TYPE_FILE;
723 if (!lstat(f->file_name, &sb)) {
724 if (S_ISBLK(sb.st_mode))
725 f->filetype = FIO_TYPE_BD;
726 else if (S_ISCHR(sb.st_mode))
727 f->filetype = FIO_TYPE_CHAR;
728 else if (S_ISFIFO(sb.st_mode))
729 f->filetype = FIO_TYPE_PIPE;
733 int add_file(struct thread_data *td, const char *fname)
735 int cur_files = td->files_index;
736 char file_name[PATH_MAX];
740 dprint(FD_FILE, "add file %s\n", fname);
742 f = smalloc(sizeof(*f));
744 log_err("fio: smalloc OOM\n");
750 if (td->files_size <= td->files_index) {
751 int new_size = td->o.nr_files + 1;
753 dprint(FD_FILE, "resize file array to %d files\n", new_size);
755 td->files = realloc(td->files, new_size * sizeof(f));
756 td->files_size = new_size;
758 td->files[cur_files] = f;
761 * init function, io engine may not be loaded yet
763 if (td->io_ops && (td->io_ops->flags & FIO_DISKLESSIO))
764 f->real_file_size = -1ULL;
767 len = sprintf(file_name, "%s/", td->o.directory);
769 sprintf(file_name + len, "%s", fname);
770 f->file_name = smalloc_strdup(file_name);
772 log_err("fio: smalloc OOM\n");
778 switch (td->o.file_lock_mode) {
781 case FILE_LOCK_READWRITE:
782 f->lock = fio_mutex_rw_init();
784 case FILE_LOCK_EXCLUSIVE:
785 f->lock = fio_mutex_init(1);
788 log_err("fio: unknown lock mode: %d\n", td->o.file_lock_mode);
793 if (f->filetype == FIO_TYPE_FILE)
794 td->nr_normal_files++;
796 dprint(FD_FILE, "file %p \"%s\" added at %d\n", f, f->file_name,
802 void get_file(struct fio_file *f)
804 dprint(FD_FILE, "get file %s, ref=%d\n", f->file_name, f->references);
805 assert(f->flags & FIO_FILE_OPEN);
809 int put_file(struct thread_data *td, struct fio_file *f)
811 int f_ret = 0, ret = 0;
813 dprint(FD_FILE, "put file %s, ref=%d\n", f->file_name, f->references);
815 if (!(f->flags & FIO_FILE_OPEN))
818 assert(f->references);
822 if (should_fsync(td) && td->o.fsync_on_close)
823 f_ret = fsync(f->fd);
825 if (td->io_ops->close_file)
826 ret = td->io_ops->close_file(td, f);
832 f->flags &= ~FIO_FILE_OPEN;
836 void lock_file(struct thread_data *td, struct fio_file *f, enum fio_ddir ddir)
838 if (!f->lock || td->o.file_lock_mode == FILE_LOCK_NONE)
841 if (f->lock_owner == td && f->lock_batch--)
844 if (td->o.file_lock_mode == FILE_LOCK_READWRITE) {
845 if (ddir == DDIR_READ)
846 fio_mutex_down_read(f->lock);
848 fio_mutex_down_write(f->lock);
849 } else if (td->o.file_lock_mode == FILE_LOCK_EXCLUSIVE)
850 fio_mutex_down(f->lock);
853 f->lock_batch = td->o.lockfile_batch;
857 void unlock_file(struct thread_data *td, struct fio_file *f)
859 if (!f->lock || td->o.file_lock_mode == FILE_LOCK_NONE)
864 if (td->o.file_lock_mode == FILE_LOCK_READWRITE) {
865 const int is_read = f->lock_ddir == DDIR_READ;
866 int val = fio_mutex_getval(f->lock);
868 if ((is_read && val == 1) || (!is_read && val == -1))
869 f->lock_owner = NULL;
872 fio_mutex_up_read(f->lock);
874 fio_mutex_up_write(f->lock);
875 } else if (td->o.file_lock_mode == FILE_LOCK_EXCLUSIVE) {
876 int val = fio_mutex_getval(f->lock);
879 f->lock_owner = NULL;
881 fio_mutex_up(f->lock);
885 void unlock_file_all(struct thread_data *td, struct fio_file *f)
887 if (f->lock_owner != td)
894 static int recurse_dir(struct thread_data *td, const char *dirname)
900 D = opendir(dirname);
902 char buf[FIO_VERROR_SIZE];
904 snprintf(buf, FIO_VERROR_SIZE - 1, "opendir(%s)", dirname);
905 td_verror(td, errno, buf);
909 while ((dir = readdir(D)) != NULL) {
910 char full_path[PATH_MAX];
913 if (!strcmp(dir->d_name, ".") || !strcmp(dir->d_name, ".."))
916 sprintf(full_path, "%s/%s", dirname, dir->d_name);
918 if (lstat(full_path, &sb) == -1) {
919 if (errno != ENOENT) {
920 td_verror(td, errno, "stat");
925 if (S_ISREG(sb.st_mode)) {
926 add_file(td, full_path);
930 if (!S_ISDIR(sb.st_mode))
933 ret = recurse_dir(td, full_path);
942 int add_dir_files(struct thread_data *td, const char *path)
944 int ret = recurse_dir(td, path);
947 log_info("fio: opendir added %d files\n", td->o.nr_files);
952 void dup_files(struct thread_data *td, struct thread_data *org)
957 dprint(FD_FILE, "dup files: %d\n", org->files_index);
962 td->files = malloc(org->files_index * sizeof(f));
964 for_each_file(org, f, i) {
965 struct fio_file *__f;
967 __f = smalloc(sizeof(*__f));
969 log_err("fio: smalloc OOM\n");
974 __f->file_name = smalloc_strdup(f->file_name);
975 if (!__f->file_name) {
976 log_err("fio: smalloc OOM\n");
980 __f->filetype = f->filetype;
988 * Returns the index that matches the filename, or -1 if not there
990 int get_fileno(struct thread_data *td, const char *fname)
995 for_each_file(td, f, i)
996 if (!strcmp(f->file_name, fname))
1003 * For log usage, where we add/open/close files automatically
1005 void free_release_files(struct thread_data *td)
1008 td->files_index = 0;
1009 td->nr_normal_files = 0;