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)
260 if (len == -1ULL && td->o.fill_device)
264 off = f->file_offset;
266 dprint(FD_IO, "invalidate cache %s: %llu/%llu\n", f->file_name, off,
270 * FIXME: add blockdev flushing too
273 ret = madvise(f->mmap_ptr, f->mmap_sz, MADV_DONTNEED);
274 else if (f->filetype == FIO_TYPE_FILE) {
275 ret = fadvise(f->fd, off, len, POSIX_FADV_DONTNEED);
276 } else if (f->filetype == FIO_TYPE_BD) {
277 ret = blockdev_invalidate_cache(f->fd);
278 if (ret < 0 && errno == EACCES && geteuid()) {
280 log_err("fio: only root may flush block "
281 "devices. Cache flush bypassed!\n");
286 } else if (f->filetype == FIO_TYPE_CHAR || f->filetype == FIO_TYPE_PIPE)
290 td_verror(td, errno, "invalidate_cache");
292 } else if (ret > 0) {
293 td_verror(td, ret, "invalidate_cache");
301 int file_invalidate_cache(struct thread_data *td, struct fio_file *f)
303 if (!(f->flags & FIO_FILE_OPEN))
306 return __file_invalidate_cache(td, f, -1, -1);
309 int generic_close_file(struct thread_data fio_unused *td, struct fio_file *f)
313 dprint(FD_FILE, "fd close %s\n", f->file_name);
317 if (close(f->fd) < 0)
324 static int file_lookup_open(struct fio_file *f, int flags)
326 struct fio_file *__f;
329 __f = lookup_file_hash(f->file_name);
331 dprint(FD_FILE, "found file in hash %s\n", f->file_name);
333 * racy, need the __f->lock locked
336 f->lock_owner = __f->lock_owner;
337 f->lock_batch = __f->lock_batch;
338 f->lock_ddir = __f->lock_ddir;
341 dprint(FD_FILE, "file not found in hash %s\n", f->file_name);
345 f->fd = open(f->file_name, flags, 0600);
349 int generic_open_file(struct thread_data *td, struct fio_file *f)
355 dprint(FD_FILE, "fd open %s\n", f->file_name);
357 if (!strcmp(f->file_name, "-")) {
359 log_err("fio: can't read/write to stdin/out\n");
365 * move output logging to stderr, if we are writing to stdout
372 flags |= OS_O_DIRECT;
375 if (f->filetype != FIO_TYPE_FILE)
376 flags |= FIO_O_NOATIME;
377 if (td->o.create_on_open)
385 if (f->filetype == FIO_TYPE_FILE)
389 f->fd = dup(STDOUT_FILENO);
391 from_hash = file_lookup_open(f, flags);
393 if (f->filetype == FIO_TYPE_CHAR && !read_only)
399 f->fd = dup(STDIN_FILENO);
401 from_hash = file_lookup_open(f, flags);
405 char buf[FIO_VERROR_SIZE];
408 if (errno == EPERM && (flags & FIO_O_NOATIME)) {
409 flags &= ~FIO_O_NOATIME;
413 snprintf(buf, sizeof(buf) - 1, "open(%s)", f->file_name);
415 td_verror(td, __e, buf);
418 if (!from_hash && f->fd != -1) {
419 if (add_file_hash(f)) {
423 * OK to ignore, we haven't done anything with it
425 ret = generic_close_file(td, f);
433 int generic_get_file_size(struct thread_data *td, struct fio_file *f)
435 return get_file_size(td, f);
439 * open/close all files, so that ->real_file_size gets set
441 static int get_file_sizes(struct thread_data *td)
447 for_each_file(td, f, i) {
448 dprint(FD_FILE, "get file size for %p/%d/%p\n", f, i,
451 if (td_io_get_file_size(td, f)) {
452 if (td->error != ENOENT) {
453 log_err("%s\n", td->verror);
459 if (f->real_file_size == -1ULL && td->o.size)
460 f->real_file_size = td->o.size / td->o.nr_files;
467 * Open the files and setup files sizes, creating files if necessary.
469 int setup_files(struct thread_data *td)
471 unsigned long long total_size, extend_size;
474 int err = 0, need_extend;
476 dprint(FD_FILE, "setup files\n");
478 if (td->o.read_iolog_file)
482 * if ioengine defines a setup() method, it's responsible for
483 * opening the files and setting f->real_file_size to indicate
484 * the valid range for that file.
486 if (td->io_ops->setup)
487 err = td->io_ops->setup(td);
489 err = get_file_sizes(td);
495 * check sizes. if the files/devices do not exist and the size
496 * isn't passed to fio, abort.
499 for_each_file(td, f, i) {
500 if (f->real_file_size == -1ULL)
503 total_size += f->real_file_size;
507 * device/file sizes are zero and no size given, punt
509 if ((!total_size || total_size == -1ULL) && !td->o.size &&
510 !(td->io_ops->flags & FIO_NOIO) && !td->o.fill_device) {
511 log_err("%s: you need to specify size=\n", td->o.name);
512 td_verror(td, EINVAL, "total_file_size");
517 * now file sizes are known, so we can set ->io_size. if size= is
518 * not given, ->io_size is just equal to ->real_file_size. if size
519 * is given, ->io_size is size / nr_files.
521 extend_size = total_size = 0;
523 for_each_file(td, f, i) {
524 f->file_offset = td->o.start_offset;
526 if (!td->o.file_size_low) {
528 * no file size range given, file size is equal to
529 * total size divided by number of files. if that is
530 * zero, set it to the real file size.
532 f->io_size = td->o.size / td->o.nr_files;
534 f->io_size = f->real_file_size - f->file_offset;
535 } else if (f->real_file_size < td->o.file_size_low ||
536 f->real_file_size > td->o.file_size_high) {
537 if (f->file_offset > td->o.file_size_low)
540 * file size given. if it's fixed, use that. if it's a
541 * range, generate a random size in-between.
543 if (td->o.file_size_low == td->o.file_size_high) {
544 f->io_size = td->o.file_size_low
547 f->io_size = get_rand_file_size(td)
551 f->io_size = f->real_file_size - f->file_offset;
553 if (f->io_size == -1ULL)
556 total_size += f->io_size;
558 if (f->filetype == FIO_TYPE_FILE &&
559 (f->io_size + f->file_offset) > f->real_file_size &&
560 !(td->io_ops->flags & FIO_DISKLESSIO)) {
561 if (!td->o.create_on_open) {
563 extend_size += (f->io_size + f->file_offset);
565 f->real_file_size = f->io_size + f->file_offset;
566 f->flags |= FIO_FILE_EXTEND;
570 if (!td->o.size || td->o.size > total_size)
571 td->o.size = total_size;
574 * See if we need to extend some files
579 log_info("%s: Laying out IO file(s) (%u file(s) /"
580 " %LuMiB)\n", td->o.name, need_extend,
583 for_each_file(td, f, i) {
584 unsigned long long old_len, extend_len;
586 if (!(f->flags & FIO_FILE_EXTEND))
589 assert(f->filetype == FIO_TYPE_FILE);
590 f->flags &= ~FIO_FILE_EXTEND;
591 old_len = f->real_file_size;
592 extend_len = f->io_size + f->file_offset - old_len;
593 f->real_file_size = (f->io_size + f->file_offset);
594 err = extend_file(td, f);
598 err = __file_invalidate_cache(td, f, old_len,
611 if (!td->o.zone_size)
612 td->o.zone_size = td->o.size;
615 * iolog already set the total io size, if we read back
618 if (!td->o.read_iolog_file)
619 td->total_io_size = td->o.size * td->o.loops;
622 log_err("%s: you need to specify valid offset=\n", td->o.name);
626 int pre_read_files(struct thread_data *td)
631 dprint(FD_FILE, "pre_read files\n");
633 for_each_file(td, f, i) {
634 pre_read_file(td, f);
640 int init_random_map(struct thread_data *td)
642 unsigned long long blocks, num_maps;
646 if (td->o.norandommap || !td_random(td))
649 for_each_file(td, f, i) {
650 blocks = (f->real_file_size + td->o.rw_min_bs - 1) /
651 (unsigned long long) td->o.rw_min_bs;
652 num_maps = (blocks + BLOCKS_PER_MAP - 1) /
653 (unsigned long long) BLOCKS_PER_MAP;
654 f->file_map = smalloc(num_maps * sizeof(int));
656 f->num_maps = num_maps;
659 if (!td->o.softrandommap) {
660 log_err("fio: failed allocating random map. If running"
661 " a large number of jobs, try the 'norandommap'"
662 " option or set 'softrandommap'. Or give"
663 " a larger --alloc-size to fio.\n");
667 log_info("fio: file %s failed allocating random map. Running "
668 "job without.\n", f->file_name);
675 void close_files(struct thread_data *td)
680 for_each_file(td, f, i)
681 td_io_close_file(td, f);
684 void close_and_free_files(struct thread_data *td)
689 dprint(FD_FILE, "close files\n");
691 for_each_file(td, f, i) {
692 if (td->o.unlink && f->filetype == FIO_TYPE_FILE) {
693 dprint(FD_FILE, "free unlink %s\n", f->file_name);
694 unlink(f->file_name);
697 td_io_close_file(td, f);
710 td->o.filename = NULL;
717 static void get_file_type(struct fio_file *f)
721 if (!strcmp(f->file_name, "-"))
722 f->filetype = FIO_TYPE_PIPE;
724 f->filetype = FIO_TYPE_FILE;
726 if (!lstat(f->file_name, &sb)) {
727 if (S_ISBLK(sb.st_mode))
728 f->filetype = FIO_TYPE_BD;
729 else if (S_ISCHR(sb.st_mode))
730 f->filetype = FIO_TYPE_CHAR;
731 else if (S_ISFIFO(sb.st_mode))
732 f->filetype = FIO_TYPE_PIPE;
736 int add_file(struct thread_data *td, const char *fname)
738 int cur_files = td->files_index;
739 char file_name[PATH_MAX];
743 dprint(FD_FILE, "add file %s\n", fname);
745 f = smalloc(sizeof(*f));
747 log_err("fio: smalloc OOM\n");
753 if (td->files_size <= td->files_index) {
754 int new_size = td->o.nr_files + 1;
756 dprint(FD_FILE, "resize file array to %d files\n", new_size);
758 td->files = realloc(td->files, new_size * sizeof(f));
759 td->files_size = new_size;
761 td->files[cur_files] = f;
764 * init function, io engine may not be loaded yet
766 if (td->io_ops && (td->io_ops->flags & FIO_DISKLESSIO))
767 f->real_file_size = -1ULL;
770 len = sprintf(file_name, "%s/", td->o.directory);
772 sprintf(file_name + len, "%s", fname);
773 f->file_name = smalloc_strdup(file_name);
775 log_err("fio: smalloc OOM\n");
781 switch (td->o.file_lock_mode) {
784 case FILE_LOCK_READWRITE:
785 f->lock = fio_mutex_rw_init();
787 case FILE_LOCK_EXCLUSIVE:
788 f->lock = fio_mutex_init(1);
791 log_err("fio: unknown lock mode: %d\n", td->o.file_lock_mode);
796 if (f->filetype == FIO_TYPE_FILE)
797 td->nr_normal_files++;
799 dprint(FD_FILE, "file %p \"%s\" added at %d\n", f, f->file_name,
805 void get_file(struct fio_file *f)
807 dprint(FD_FILE, "get file %s, ref=%d\n", f->file_name, f->references);
808 assert(f->flags & FIO_FILE_OPEN);
812 int put_file(struct thread_data *td, struct fio_file *f)
814 int f_ret = 0, ret = 0;
816 dprint(FD_FILE, "put file %s, ref=%d\n", f->file_name, f->references);
818 if (!(f->flags & FIO_FILE_OPEN))
821 assert(f->references);
825 if (should_fsync(td) && td->o.fsync_on_close)
826 f_ret = fsync(f->fd);
828 if (td->io_ops->close_file)
829 ret = td->io_ops->close_file(td, f);
835 f->flags &= ~FIO_FILE_OPEN;
839 void lock_file(struct thread_data *td, struct fio_file *f, enum fio_ddir ddir)
841 if (!f->lock || td->o.file_lock_mode == FILE_LOCK_NONE)
844 if (f->lock_owner == td && f->lock_batch--)
847 if (td->o.file_lock_mode == FILE_LOCK_READWRITE) {
848 if (ddir == DDIR_READ)
849 fio_mutex_down_read(f->lock);
851 fio_mutex_down_write(f->lock);
852 } else if (td->o.file_lock_mode == FILE_LOCK_EXCLUSIVE)
853 fio_mutex_down(f->lock);
856 f->lock_batch = td->o.lockfile_batch;
860 void unlock_file(struct thread_data *td, struct fio_file *f)
862 if (!f->lock || td->o.file_lock_mode == FILE_LOCK_NONE)
867 if (td->o.file_lock_mode == FILE_LOCK_READWRITE) {
868 const int is_read = f->lock_ddir == DDIR_READ;
869 int val = fio_mutex_getval(f->lock);
871 if ((is_read && val == 1) || (!is_read && val == -1))
872 f->lock_owner = NULL;
875 fio_mutex_up_read(f->lock);
877 fio_mutex_up_write(f->lock);
878 } else if (td->o.file_lock_mode == FILE_LOCK_EXCLUSIVE) {
879 int val = fio_mutex_getval(f->lock);
882 f->lock_owner = NULL;
884 fio_mutex_up(f->lock);
888 void unlock_file_all(struct thread_data *td, struct fio_file *f)
890 if (f->lock_owner != td)
897 static int recurse_dir(struct thread_data *td, const char *dirname)
903 D = opendir(dirname);
905 char buf[FIO_VERROR_SIZE];
907 snprintf(buf, FIO_VERROR_SIZE - 1, "opendir(%s)", dirname);
908 td_verror(td, errno, buf);
912 while ((dir = readdir(D)) != NULL) {
913 char full_path[PATH_MAX];
916 if (!strcmp(dir->d_name, ".") || !strcmp(dir->d_name, ".."))
919 sprintf(full_path, "%s/%s", dirname, dir->d_name);
921 if (lstat(full_path, &sb) == -1) {
922 if (errno != ENOENT) {
923 td_verror(td, errno, "stat");
928 if (S_ISREG(sb.st_mode)) {
929 add_file(td, full_path);
933 if (!S_ISDIR(sb.st_mode))
936 ret = recurse_dir(td, full_path);
945 int add_dir_files(struct thread_data *td, const char *path)
947 int ret = recurse_dir(td, path);
950 log_info("fio: opendir added %d files\n", td->o.nr_files);
955 void dup_files(struct thread_data *td, struct thread_data *org)
960 dprint(FD_FILE, "dup files: %d\n", org->files_index);
965 td->files = malloc(org->files_index * sizeof(f));
967 for_each_file(org, f, i) {
968 struct fio_file *__f;
970 __f = smalloc(sizeof(*__f));
972 log_err("fio: smalloc OOM\n");
977 __f->file_name = smalloc_strdup(f->file_name);
978 if (!__f->file_name) {
979 log_err("fio: smalloc OOM\n");
983 __f->filetype = f->filetype;
991 * Returns the index that matches the filename, or -1 if not there
993 int get_fileno(struct thread_data *td, const char *fname)
998 for_each_file(td, f, i)
999 if (!strcmp(f->file_name, fname))
1006 * For log usage, where we add/open/close files automatically
1008 void free_release_files(struct thread_data *td)
1011 td->files_index = 0;
1012 td->nr_normal_files = 0;