16 static inline void clear_error(struct thread_data *td)
23 * Leaves f->fd open on success, caller must close
25 static int extend_file(struct thread_data *td, struct fio_file *f)
27 int r, new_layout = 0, unlink_file = 0, flags;
28 unsigned long long left;
33 log_err("fio: refusing extend of file due to read-only\n");
38 * check if we need to lay the file out complete again. fio
39 * does that for operations involving reads, or for writes
40 * where overwrite is set
42 if (td_read(td) || (td_write(td) && td->o.overwrite) ||
43 (td_write(td) && td->io_ops->flags & FIO_NOEXTEND))
45 if (td_write(td) && !td->o.overwrite)
48 if (unlink_file || new_layout) {
49 dprint(FD_FILE, "layout unlink %s\n", f->file_name);
50 if ((unlink(f->file_name) < 0) && (errno != ENOENT)) {
51 td_verror(td, errno, "unlink");
56 flags = O_WRONLY | O_CREAT;
60 dprint(FD_FILE, "open file %s, flags %x\n", f->file_name, flags);
61 f->fd = open(f->file_name, flags, 0644);
63 td_verror(td, errno, "open");
71 * The size will be -1ULL when fill_device is used, so don't truncate
72 * or fallocate this file, just write it
74 if (!td->o.fill_device) {
75 dprint(FD_FILE, "truncate file %s, size %llu\n", f->file_name,
77 if (ftruncate(f->fd, f->real_file_size) == -1) {
78 td_verror(td, errno, "ftruncate");
82 #ifdef FIO_HAVE_FALLOCATE
83 dprint(FD_FILE, "fallocate file %s, size %llu\n", f->file_name,
85 r = posix_fallocate(f->fd, 0, f->real_file_size);
87 log_err("fio: posix_fallocate fails: %s\n",
93 b = malloc(td->o.max_bs[DDIR_WRITE]);
94 memset(b, 0, td->o.max_bs[DDIR_WRITE]);
96 left = f->real_file_size;
97 while (left && !td->terminate) {
98 bs = td->o.max_bs[DDIR_WRITE];
102 r = write(f->fd, b, bs);
112 if (td->o.fill_device)
114 log_info("fio: ENOSPC on laying out "
118 td_verror(td, errno, "write");
120 td_verror(td, EIO, "write");
127 dprint(FD_FILE, "terminate unlink %s\n", f->file_name);
128 unlink(f->file_name);
129 } else if (td->o.create_fsync) {
130 if (fsync(f->fd) < 0) {
131 td_verror(td, errno, "fsync");
135 if (td->o.fill_device && !td_write(td)) {
136 fio_file_clear_size_known(f);
137 if (td_io_get_file_size(td, f))
139 if (f->io_size > f->real_file_size)
140 f->io_size = f->real_file_size;
152 static int pre_read_file(struct thread_data *td, struct fio_file *f)
154 int r, did_open = 0, old_runstate;
155 unsigned long long left;
159 if (!fio_file_open(f)) {
160 if (td->io_ops->open_file(td, f)) {
161 log_err("fio: cannot pre-read, failed to open file\n");
167 old_runstate = td->runstate;
168 td_set_runstate(td, TD_PRE_READING);
170 bs = td->o.max_bs[DDIR_READ];
174 lseek(f->fd, f->file_offset, SEEK_SET);
177 while (left && !td->terminate) {
181 r = read(f->fd, b, bs);
187 td_verror(td, EIO, "pre_read");
192 td_set_runstate(td, old_runstate);
195 td->io_ops->close_file(td, f);
200 static unsigned long long get_rand_file_size(struct thread_data *td)
202 unsigned long long ret, sized;
205 r = os_random_long(&td->file_size_state);
206 sized = td->o.file_size_high - td->o.file_size_low;
207 ret = (unsigned long long) ((double) sized * (r / (OS_RAND_MAX + 1.0)));
208 ret += td->o.file_size_low;
209 ret -= (ret % td->o.rw_min_bs);
213 static int file_size(struct thread_data *td, struct fio_file *f)
217 if (stat(f->file_name, &st) == -1) {
218 td_verror(td, errno, "fstat");
222 f->real_file_size = st.st_size;
226 static int bdev_size(struct thread_data *td, struct fio_file *f)
228 unsigned long long bytes;
231 if (td->io_ops->open_file(td, f)) {
232 log_err("fio: failed opening blockdev %s for size check\n",
237 r = blockdev_size(f->fd, &bytes);
239 td_verror(td, r, "blockdev_size");
244 log_err("%s: zero sized block device?\n", f->file_name);
248 f->real_file_size = bytes;
251 td->io_ops->close_file(td, f);
255 static int get_file_size(struct thread_data *td, struct fio_file *f)
259 if (fio_file_size_known(f))
262 if (f->filetype == FIO_TYPE_FILE)
263 ret = file_size(td, f);
264 else if (f->filetype == FIO_TYPE_BD)
265 ret = bdev_size(td, f);
267 f->real_file_size = -1;
272 if (f->file_offset > f->real_file_size) {
273 log_err("%s: offset extends end (%Lu > %Lu)\n", td->o.name,
274 f->file_offset, f->real_file_size);
278 fio_file_set_size_known(f);
282 static int __file_invalidate_cache(struct thread_data *td, struct fio_file *f,
283 unsigned long long off,
284 unsigned long long len)
291 off = f->file_offset;
293 if (len == -1ULL || off == -1ULL)
296 dprint(FD_IO, "invalidate cache %s: %llu/%llu\n", f->file_name, off,
300 * FIXME: add blockdev flushing too
303 ret = madvise(f->mmap_ptr, f->mmap_sz, MADV_DONTNEED);
304 else if (f->filetype == FIO_TYPE_FILE) {
305 ret = fadvise(f->fd, off, len, POSIX_FADV_DONTNEED);
306 } else if (f->filetype == FIO_TYPE_BD) {
307 ret = blockdev_invalidate_cache(f->fd);
308 if (ret < 0 && errno == EACCES && geteuid()) {
310 log_err("fio: only root may flush block "
311 "devices. Cache flush bypassed!\n");
316 } else if (f->filetype == FIO_TYPE_CHAR || f->filetype == FIO_TYPE_PIPE)
320 td_verror(td, errno, "invalidate_cache");
322 } else if (ret > 0) {
323 td_verror(td, ret, "invalidate_cache");
331 int file_invalidate_cache(struct thread_data *td, struct fio_file *f)
333 if (!fio_file_open(f))
336 return __file_invalidate_cache(td, f, -1ULL, -1ULL);
339 int generic_close_file(struct thread_data fio_unused *td, struct fio_file *f)
343 dprint(FD_FILE, "fd close %s\n", f->file_name);
347 if (close(f->fd) < 0)
354 static int file_lookup_open(struct fio_file *f, int flags)
356 struct fio_file *__f;
359 __f = lookup_file_hash(f->file_name);
361 dprint(FD_FILE, "found file in hash %s\n", f->file_name);
363 * racy, need the __f->lock locked
366 f->lock_owner = __f->lock_owner;
367 f->lock_batch = __f->lock_batch;
368 f->lock_ddir = __f->lock_ddir;
371 dprint(FD_FILE, "file not found in hash %s\n", f->file_name);
375 f->fd = open(f->file_name, flags, 0600);
379 int generic_open_file(struct thread_data *td, struct fio_file *f)
385 dprint(FD_FILE, "fd open %s\n", f->file_name);
387 if (!strcmp(f->file_name, "-")) {
389 log_err("fio: can't read/write to stdin/out\n");
395 * move output logging to stderr, if we are writing to stdout
402 flags |= OS_O_DIRECT;
405 if (f->filetype != FIO_TYPE_FILE)
406 flags |= FIO_O_NOATIME;
407 if (td->o.create_on_open)
415 if (f->filetype == FIO_TYPE_FILE)
419 f->fd = dup(STDOUT_FILENO);
421 from_hash = file_lookup_open(f, flags);
423 if (f->filetype == FIO_TYPE_CHAR && !read_only)
429 f->fd = dup(STDIN_FILENO);
431 from_hash = file_lookup_open(f, flags);
435 char buf[FIO_VERROR_SIZE];
438 if (errno == EPERM && (flags & FIO_O_NOATIME)) {
439 flags &= ~FIO_O_NOATIME;
443 snprintf(buf, sizeof(buf) - 1, "open(%s)", f->file_name);
445 td_verror(td, __e, buf);
448 if (!from_hash && f->fd != -1) {
449 if (add_file_hash(f)) {
453 * OK to ignore, we haven't done anything with it
455 ret = generic_close_file(td, f);
463 int generic_get_file_size(struct thread_data *td, struct fio_file *f)
465 return get_file_size(td, f);
469 * open/close all files, so that ->real_file_size gets set
471 static int get_file_sizes(struct thread_data *td)
477 for_each_file(td, f, i) {
478 dprint(FD_FILE, "get file size for %p/%d/%p\n", f, i,
481 if (td_io_get_file_size(td, f)) {
482 if (td->error != ENOENT) {
483 log_err("%s\n", td->verror);
489 if (f->real_file_size == -1ULL && td->o.size)
490 f->real_file_size = td->o.size / td->o.nr_files;
497 * Open the files and setup files sizes, creating files if necessary.
499 int setup_files(struct thread_data *td)
501 unsigned long long total_size, extend_size;
504 int err = 0, need_extend;
506 dprint(FD_FILE, "setup files\n");
508 if (td->o.read_iolog_file)
512 * if ioengine defines a setup() method, it's responsible for
513 * opening the files and setting f->real_file_size to indicate
514 * the valid range for that file.
516 if (td->io_ops->setup)
517 err = td->io_ops->setup(td);
519 err = get_file_sizes(td);
525 * check sizes. if the files/devices do not exist and the size
526 * isn't passed to fio, abort.
529 for_each_file(td, f, i) {
530 if (f->real_file_size == -1ULL)
533 total_size += f->real_file_size;
537 * device/file sizes are zero and no size given, punt
539 if ((!total_size || total_size == -1ULL) && !td->o.size &&
540 !(td->io_ops->flags & FIO_NOIO) && !td->o.fill_device) {
541 log_err("%s: you need to specify size=\n", td->o.name);
542 td_verror(td, EINVAL, "total_file_size");
547 * now file sizes are known, so we can set ->io_size. if size= is
548 * not given, ->io_size is just equal to ->real_file_size. if size
549 * is given, ->io_size is size / nr_files.
551 extend_size = total_size = 0;
553 for_each_file(td, f, i) {
554 f->file_offset = td->o.start_offset;
556 if (!td->o.file_size_low) {
558 * no file size range given, file size is equal to
559 * total size divided by number of files. if that is
560 * zero, set it to the real file size.
562 f->io_size = td->o.size / td->o.nr_files;
564 f->io_size = f->real_file_size - f->file_offset;
565 } else if (f->real_file_size < td->o.file_size_low ||
566 f->real_file_size > td->o.file_size_high) {
567 if (f->file_offset > td->o.file_size_low)
570 * file size given. if it's fixed, use that. if it's a
571 * range, generate a random size in-between.
573 if (td->o.file_size_low == td->o.file_size_high) {
574 f->io_size = td->o.file_size_low
577 f->io_size = get_rand_file_size(td)
581 f->io_size = f->real_file_size - f->file_offset;
583 if (f->io_size == -1ULL)
586 total_size += f->io_size;
588 if (f->filetype == FIO_TYPE_FILE &&
589 (f->io_size + f->file_offset) > f->real_file_size &&
590 !(td->io_ops->flags & FIO_DISKLESSIO)) {
591 if (!td->o.create_on_open) {
593 extend_size += (f->io_size + f->file_offset);
595 f->real_file_size = f->io_size + f->file_offset;
596 fio_file_set_extend(f);
600 if (!td->o.size || td->o.size > total_size)
601 td->o.size = total_size;
604 * See if we need to extend some files
609 log_info("%s: Laying out IO file(s) (%u file(s) /"
610 " %LuMiB)\n", td->o.name, need_extend,
613 for_each_file(td, f, i) {
614 unsigned long long old_len = -1ULL, extend_len = -1ULL;
616 if (!fio_file_extend(f))
619 assert(f->filetype == FIO_TYPE_FILE);
620 fio_file_clear_extend(f);
621 if (!td->o.fill_device) {
622 old_len = f->real_file_size;
623 extend_len = f->io_size + f->file_offset - old_len;
625 f->real_file_size = (f->io_size + f->file_offset);
626 err = extend_file(td, f);
630 err = __file_invalidate_cache(td, f, old_len,
643 if (!td->o.zone_size)
644 td->o.zone_size = td->o.size;
647 * iolog already set the total io size, if we read back
650 if (!td->o.read_iolog_file)
651 td->total_io_size = td->o.size * td->o.loops;
654 log_err("%s: you need to specify valid offset=\n", td->o.name);
658 int pre_read_files(struct thread_data *td)
663 dprint(FD_FILE, "pre_read files\n");
665 for_each_file(td, f, i) {
666 pre_read_file(td, f);
672 int init_random_map(struct thread_data *td)
674 unsigned long long blocks, num_maps;
678 if (td->o.norandommap || !td_random(td))
681 for_each_file(td, f, i) {
682 blocks = (f->real_file_size + td->o.rw_min_bs - 1) /
683 (unsigned long long) td->o.rw_min_bs;
684 num_maps = (blocks + BLOCKS_PER_MAP - 1) /
685 (unsigned long long) BLOCKS_PER_MAP;
686 f->file_map = smalloc(num_maps * sizeof(int));
688 f->num_maps = num_maps;
691 if (!td->o.softrandommap) {
692 log_err("fio: failed allocating random map. If running"
693 " a large number of jobs, try the 'norandommap'"
694 " option or set 'softrandommap'. Or give"
695 " a larger --alloc-size to fio.\n");
699 log_info("fio: file %s failed allocating random map. Running "
700 "job without.\n", f->file_name);
707 void close_files(struct thread_data *td)
712 for_each_file(td, f, i)
713 td_io_close_file(td, f);
716 void close_and_free_files(struct thread_data *td)
721 dprint(FD_FILE, "close files\n");
723 for_each_file(td, f, i) {
724 if (td->o.unlink && f->filetype == FIO_TYPE_FILE) {
725 dprint(FD_FILE, "free unlink %s\n", f->file_name);
726 unlink(f->file_name);
729 td_io_close_file(td, f);
742 td->o.filename = NULL;
749 static void get_file_type(struct fio_file *f)
753 if (!strcmp(f->file_name, "-"))
754 f->filetype = FIO_TYPE_PIPE;
756 f->filetype = FIO_TYPE_FILE;
758 if (!lstat(f->file_name, &sb)) {
759 if (S_ISBLK(sb.st_mode))
760 f->filetype = FIO_TYPE_BD;
761 else if (S_ISCHR(sb.st_mode))
762 f->filetype = FIO_TYPE_CHAR;
763 else if (S_ISFIFO(sb.st_mode))
764 f->filetype = FIO_TYPE_PIPE;
768 int add_file(struct thread_data *td, const char *fname)
770 int cur_files = td->files_index;
771 char file_name[PATH_MAX];
775 dprint(FD_FILE, "add file %s\n", fname);
777 f = smalloc(sizeof(*f));
779 log_err("fio: smalloc OOM\n");
785 if (td->files_size <= td->files_index) {
786 int new_size = td->o.nr_files + 1;
788 dprint(FD_FILE, "resize file array to %d files\n", new_size);
790 td->files = realloc(td->files, new_size * sizeof(f));
791 td->files_size = new_size;
793 td->files[cur_files] = f;
796 * init function, io engine may not be loaded yet
798 if (td->io_ops && (td->io_ops->flags & FIO_DISKLESSIO))
799 f->real_file_size = -1ULL;
802 len = sprintf(file_name, "%s/", td->o.directory);
804 sprintf(file_name + len, "%s", fname);
805 f->file_name = smalloc_strdup(file_name);
807 log_err("fio: smalloc OOM\n");
813 switch (td->o.file_lock_mode) {
816 case FILE_LOCK_READWRITE:
817 f->lock = fio_mutex_rw_init();
819 case FILE_LOCK_EXCLUSIVE:
820 f->lock = fio_mutex_init(1);
823 log_err("fio: unknown lock mode: %d\n", td->o.file_lock_mode);
828 if (f->filetype == FIO_TYPE_FILE)
829 td->nr_normal_files++;
831 dprint(FD_FILE, "file %p \"%s\" added at %d\n", f, f->file_name,
837 void get_file(struct fio_file *f)
839 dprint(FD_FILE, "get file %s, ref=%d\n", f->file_name, f->references);
840 assert(fio_file_open(f));
844 int put_file(struct thread_data *td, struct fio_file *f)
846 int f_ret = 0, ret = 0;
848 dprint(FD_FILE, "put file %s, ref=%d\n", f->file_name, f->references);
850 if (!fio_file_open(f))
853 assert(f->references);
857 if (should_fsync(td) && td->o.fsync_on_close)
858 f_ret = fsync(f->fd);
860 if (td->io_ops->close_file)
861 ret = td->io_ops->close_file(td, f);
867 fio_file_clear_open(f);
871 void lock_file(struct thread_data *td, struct fio_file *f, enum fio_ddir ddir)
873 if (!f->lock || td->o.file_lock_mode == FILE_LOCK_NONE)
876 if (f->lock_owner == td && f->lock_batch--)
879 if (td->o.file_lock_mode == FILE_LOCK_READWRITE) {
880 if (ddir == DDIR_READ)
881 fio_mutex_down_read(f->lock);
883 fio_mutex_down_write(f->lock);
884 } else if (td->o.file_lock_mode == FILE_LOCK_EXCLUSIVE)
885 fio_mutex_down(f->lock);
888 f->lock_batch = td->o.lockfile_batch;
892 void unlock_file(struct thread_data *td, struct fio_file *f)
894 if (!f->lock || td->o.file_lock_mode == FILE_LOCK_NONE)
899 if (td->o.file_lock_mode == FILE_LOCK_READWRITE) {
900 const int is_read = f->lock_ddir == DDIR_READ;
901 int val = fio_mutex_getval(f->lock);
903 if ((is_read && val == 1) || (!is_read && val == -1))
904 f->lock_owner = NULL;
907 fio_mutex_up_read(f->lock);
909 fio_mutex_up_write(f->lock);
910 } else if (td->o.file_lock_mode == FILE_LOCK_EXCLUSIVE) {
911 int val = fio_mutex_getval(f->lock);
914 f->lock_owner = NULL;
916 fio_mutex_up(f->lock);
920 void unlock_file_all(struct thread_data *td, struct fio_file *f)
922 if (f->lock_owner != td)
929 static int recurse_dir(struct thread_data *td, const char *dirname)
935 D = opendir(dirname);
937 char buf[FIO_VERROR_SIZE];
939 snprintf(buf, FIO_VERROR_SIZE - 1, "opendir(%s)", dirname);
940 td_verror(td, errno, buf);
944 while ((dir = readdir(D)) != NULL) {
945 char full_path[PATH_MAX];
948 if (!strcmp(dir->d_name, ".") || !strcmp(dir->d_name, ".."))
951 sprintf(full_path, "%s/%s", dirname, dir->d_name);
953 if (lstat(full_path, &sb) == -1) {
954 if (errno != ENOENT) {
955 td_verror(td, errno, "stat");
960 if (S_ISREG(sb.st_mode)) {
961 add_file(td, full_path);
965 if (!S_ISDIR(sb.st_mode))
968 ret = recurse_dir(td, full_path);
977 int add_dir_files(struct thread_data *td, const char *path)
979 int ret = recurse_dir(td, path);
982 log_info("fio: opendir added %d files\n", td->o.nr_files);
987 void dup_files(struct thread_data *td, struct thread_data *org)
992 dprint(FD_FILE, "dup files: %d\n", org->files_index);
997 td->files = malloc(org->files_index * sizeof(f));
999 for_each_file(org, f, i) {
1000 struct fio_file *__f;
1002 __f = smalloc(sizeof(*__f));
1004 log_err("fio: smalloc OOM\n");
1009 __f->file_name = smalloc_strdup(f->file_name);
1010 if (!__f->file_name) {
1011 log_err("fio: smalloc OOM\n");
1015 __f->filetype = f->filetype;
1023 * Returns the index that matches the filename, or -1 if not there
1025 int get_fileno(struct thread_data *td, const char *fname)
1030 for_each_file(td, f, i)
1031 if (!strcmp(f->file_name, fname))
1038 * For log usage, where we add/open/close files automatically
1040 void free_release_files(struct thread_data *td)
1043 td->files_index = 0;
1044 td->nr_normal_files = 0;