17 static inline void clear_error(struct thread_data *td)
24 * Leaves f->fd open on success, caller must close
26 static int extend_file(struct thread_data *td, struct fio_file *f)
28 int r, new_layout = 0, unlink_file = 0, flags;
29 unsigned long long left;
34 log_err("fio: refusing extend of file due to read-only\n");
39 * check if we need to lay the file out complete again. fio
40 * does that for operations involving reads, or for writes
41 * where overwrite is set
43 if (td_read(td) || (td_write(td) && td->o.overwrite) ||
44 (td_write(td) && td->io_ops->flags & FIO_NOEXTEND))
46 if (td_write(td) && !td->o.overwrite)
49 if (unlink_file || new_layout) {
50 dprint(FD_FILE, "layout unlink %s\n", f->file_name);
51 if ((unlink(f->file_name) < 0) && (errno != ENOENT)) {
52 td_verror(td, errno, "unlink");
57 flags = O_WRONLY | O_CREAT;
61 dprint(FD_FILE, "open file %s, flags %x\n", f->file_name, flags);
62 f->fd = open(f->file_name, flags, 0644);
64 td_verror(td, errno, "open");
68 #ifdef FIO_HAVE_FALLOCATE
69 if (td->o.fallocate && !td->o.fill_device) {
70 dprint(FD_FILE, "fallocate file %s size %llu\n", f->file_name,
73 r = posix_fallocate(f->fd, 0, f->real_file_size);
75 log_err("fio: posix_fallocate fails: %s\n",
85 * The size will be -1ULL when fill_device is used, so don't truncate
86 * or fallocate this file, just write it
88 if (!td->o.fill_device) {
89 dprint(FD_FILE, "truncate file %s, size %llu\n", f->file_name,
91 if (ftruncate(f->fd, f->real_file_size) == -1) {
92 td_verror(td, errno, "ftruncate");
97 b = malloc(td->o.max_bs[DDIR_WRITE]);
98 memset(b, 0, td->o.max_bs[DDIR_WRITE]);
100 left = f->real_file_size;
101 while (left && !td->terminate) {
102 bs = td->o.max_bs[DDIR_WRITE];
106 r = write(f->fd, b, bs);
116 if (td->o.fill_device)
118 log_info("fio: ENOSPC on laying out "
122 td_verror(td, errno, "write");
124 td_verror(td, EIO, "write");
131 dprint(FD_FILE, "terminate unlink %s\n", f->file_name);
132 unlink(f->file_name);
133 } else if (td->o.create_fsync) {
134 if (fsync(f->fd) < 0) {
135 td_verror(td, errno, "fsync");
139 if (td->o.fill_device && !td_write(td)) {
140 fio_file_clear_size_known(f);
141 if (td_io_get_file_size(td, f))
143 if (f->io_size > f->real_file_size)
144 f->io_size = f->real_file_size;
156 static int pre_read_file(struct thread_data *td, struct fio_file *f)
158 int r, did_open = 0, old_runstate;
159 unsigned long long left;
163 if (td->io_ops->flags & FIO_PIPEIO)
166 if (!fio_file_open(f)) {
167 if (td->io_ops->open_file(td, f)) {
168 log_err("fio: cannot pre-read, failed to open file\n");
174 old_runstate = td->runstate;
175 td_set_runstate(td, TD_PRE_READING);
177 bs = td->o.max_bs[DDIR_READ];
181 lseek(f->fd, f->file_offset, SEEK_SET);
184 while (left && !td->terminate) {
188 r = read(f->fd, b, bs);
194 td_verror(td, EIO, "pre_read");
199 td_set_runstate(td, old_runstate);
202 td->io_ops->close_file(td, f);
207 static unsigned long long get_rand_file_size(struct thread_data *td)
209 unsigned long long ret, sized;
212 r = os_random_long(&td->file_size_state);
213 sized = td->o.file_size_high - td->o.file_size_low;
214 ret = (unsigned long long) ((double) sized * (r / (OS_RAND_MAX + 1.0)));
215 ret += td->o.file_size_low;
216 ret -= (ret % td->o.rw_min_bs);
220 static int file_size(struct thread_data *td, struct fio_file *f)
224 if (stat(f->file_name, &st) == -1) {
225 td_verror(td, errno, "fstat");
229 f->real_file_size = st.st_size;
233 static int bdev_size(struct thread_data *td, struct fio_file *f)
235 unsigned long long bytes;
238 if (td->io_ops->open_file(td, f)) {
239 log_err("fio: failed opening blockdev %s for size check\n",
244 r = blockdev_size(f->fd, &bytes);
246 td_verror(td, r, "blockdev_size");
251 log_err("%s: zero sized block device?\n", f->file_name);
255 f->real_file_size = bytes;
256 td->io_ops->close_file(td, f);
259 td->io_ops->close_file(td, f);
263 static int get_file_size(struct thread_data *td, struct fio_file *f)
267 if (fio_file_size_known(f))
270 if (f->filetype == FIO_TYPE_FILE)
271 ret = file_size(td, f);
272 else if (f->filetype == FIO_TYPE_BD)
273 ret = bdev_size(td, f);
275 f->real_file_size = -1;
280 if (f->file_offset > f->real_file_size) {
281 log_err("%s: offset extends end (%Lu > %Lu)\n", td->o.name,
282 f->file_offset, f->real_file_size);
286 fio_file_set_size_known(f);
290 static int __file_invalidate_cache(struct thread_data *td, struct fio_file *f,
291 unsigned long long off,
292 unsigned long long len)
299 off = f->file_offset;
301 if (len == -1ULL || off == -1ULL)
304 dprint(FD_IO, "invalidate cache %s: %llu/%llu\n", f->file_name, off,
308 * FIXME: add blockdev flushing too
311 ret = madvise(f->mmap_ptr, f->mmap_sz, MADV_DONTNEED);
313 (void) madvise(f->mmap_ptr, f->mmap_sz, FIO_MADV_FREE);
315 } else if (f->filetype == FIO_TYPE_FILE) {
316 ret = fadvise(f->fd, off, len, POSIX_FADV_DONTNEED);
317 } else if (f->filetype == FIO_TYPE_BD) {
318 ret = blockdev_invalidate_cache(f->fd);
319 if (ret < 0 && errno == EACCES && geteuid()) {
321 log_err("fio: only root may flush block "
322 "devices. Cache flush bypassed!\n");
327 } else if (f->filetype == FIO_TYPE_CHAR || f->filetype == FIO_TYPE_PIPE)
331 td_verror(td, errno, "invalidate_cache");
333 } else if (ret > 0) {
334 td_verror(td, ret, "invalidate_cache");
342 int file_invalidate_cache(struct thread_data *td, struct fio_file *f)
344 if (!fio_file_open(f))
347 return __file_invalidate_cache(td, f, -1ULL, -1ULL);
350 int generic_close_file(struct thread_data fio_unused *td, struct fio_file *f)
354 dprint(FD_FILE, "fd close %s\n", f->file_name);
358 if (close(f->fd) < 0)
365 static int file_lookup_open(struct fio_file *f, int flags)
367 struct fio_file *__f;
370 __f = lookup_file_hash(f->file_name);
372 dprint(FD_FILE, "found file in hash %s\n", f->file_name);
374 * racy, need the __f->lock locked
377 f->lock_owner = __f->lock_owner;
378 f->lock_batch = __f->lock_batch;
379 f->lock_ddir = __f->lock_ddir;
382 dprint(FD_FILE, "file not found in hash %s\n", f->file_name);
386 f->fd = open(f->file_name, flags, 0600);
390 int generic_open_file(struct thread_data *td, struct fio_file *f)
396 dprint(FD_FILE, "fd open %s\n", f->file_name);
398 if (!strcmp(f->file_name, "-")) {
400 log_err("fio: can't read/write to stdin/out\n");
406 * move output logging to stderr, if we are writing to stdout
413 flags |= OS_O_DIRECT;
416 if (f->filetype != FIO_TYPE_FILE)
417 flags |= FIO_O_NOATIME;
418 if (td->o.create_on_open)
426 if (f->filetype == FIO_TYPE_FILE)
430 f->fd = dup(STDOUT_FILENO);
432 from_hash = file_lookup_open(f, flags);
434 if (f->filetype == FIO_TYPE_CHAR && !read_only)
440 f->fd = dup(STDIN_FILENO);
442 from_hash = file_lookup_open(f, flags);
446 char buf[FIO_VERROR_SIZE];
449 if (__e == EPERM && (flags & FIO_O_NOATIME)) {
450 flags &= ~FIO_O_NOATIME;
454 snprintf(buf, sizeof(buf) - 1, "open(%s)", f->file_name);
456 td_verror(td, __e, buf);
459 if (!from_hash && f->fd != -1) {
460 if (add_file_hash(f)) {
464 * OK to ignore, we haven't done anything with it
466 ret = generic_close_file(td, f);
474 int generic_get_file_size(struct thread_data *td, struct fio_file *f)
476 return get_file_size(td, f);
480 * open/close all files, so that ->real_file_size gets set
482 static int get_file_sizes(struct thread_data *td)
488 for_each_file(td, f, i) {
489 dprint(FD_FILE, "get file size for %p/%d/%p\n", f, i,
492 if (td_io_get_file_size(td, f)) {
493 if (td->error != ENOENT) {
494 log_err("%s\n", td->verror);
500 if (f->real_file_size == -1ULL && td->o.size)
501 f->real_file_size = td->o.size / td->o.nr_files;
508 struct flist_head list;
515 * Get free number of bytes for each file on each unique mount.
517 static unsigned long long get_fs_free_counts(struct thread_data *td)
519 struct flist_head *n, *tmp;
520 unsigned long long ret = 0;
521 struct fio_mount *fm;
526 for_each_file(td, f, i) {
530 if (f->filetype == FIO_TYPE_BD) {
531 ret += f->real_file_size;
533 } else if (f->filetype != FIO_TYPE_FILE)
536 strcpy(buf, f->file_name);
538 if (stat(buf, &sb) < 0) {
542 if (stat(buf, &sb) < 0)
547 flist_for_each(n, &list) {
548 fm = flist_entry(n, struct fio_mount, list);
549 if (fm->key == sb.st_dev)
558 fm = malloc(sizeof(*fm));
559 strcpy(fm->__base, buf);
560 fm->base = basename(fm->__base);
562 flist_add(&fm->list, &list);
565 flist_for_each_safe(n, tmp, &list) {
566 unsigned long long sz;
568 fm = flist_entry(n, struct fio_mount, list);
569 flist_del(&fm->list);
571 sz = get_fs_size(fm->base);
572 if (sz && sz != -1ULL)
582 * Open the files and setup files sizes, creating files if necessary.
584 int setup_files(struct thread_data *td)
586 unsigned long long total_size, extend_size;
589 int err = 0, need_extend;
591 dprint(FD_FILE, "setup files\n");
593 if (td->o.read_iolog_file)
597 * if ioengine defines a setup() method, it's responsible for
598 * opening the files and setting f->real_file_size to indicate
599 * the valid range for that file.
601 if (td->io_ops->setup)
602 err = td->io_ops->setup(td);
604 err = get_file_sizes(td);
610 * check sizes. if the files/devices do not exist and the size
611 * isn't passed to fio, abort.
614 for_each_file(td, f, i) {
615 if (f->real_file_size == -1ULL)
618 total_size += f->real_file_size;
621 if (td->o.fill_device)
622 td->fill_device_size = get_fs_free_counts(td);
625 * device/file sizes are zero and no size given, punt
627 if ((!total_size || total_size == -1ULL) && !td->o.size &&
628 !(td->io_ops->flags & FIO_NOIO) && !td->o.fill_device) {
629 log_err("%s: you need to specify size=\n", td->o.name);
630 td_verror(td, EINVAL, "total_file_size");
635 * now file sizes are known, so we can set ->io_size. if size= is
636 * not given, ->io_size is just equal to ->real_file_size. if size
637 * is given, ->io_size is size / nr_files.
639 extend_size = total_size = 0;
641 for_each_file(td, f, i) {
642 f->file_offset = td->o.start_offset;
644 if (!td->o.file_size_low) {
646 * no file size range given, file size is equal to
647 * total size divided by number of files. if that is
648 * zero, set it to the real file size.
650 f->io_size = td->o.size / td->o.nr_files;
652 f->io_size = f->real_file_size - f->file_offset;
653 } else if (f->real_file_size < td->o.file_size_low ||
654 f->real_file_size > td->o.file_size_high) {
655 if (f->file_offset > td->o.file_size_low)
658 * file size given. if it's fixed, use that. if it's a
659 * range, generate a random size in-between.
661 if (td->o.file_size_low == td->o.file_size_high) {
662 f->io_size = td->o.file_size_low
665 f->io_size = get_rand_file_size(td)
669 f->io_size = f->real_file_size - f->file_offset;
671 if (f->io_size == -1ULL)
674 total_size += f->io_size;
676 if (f->filetype == FIO_TYPE_FILE &&
677 (f->io_size + f->file_offset) > f->real_file_size &&
678 !(td->io_ops->flags & FIO_DISKLESSIO)) {
679 if (!td->o.create_on_open) {
681 extend_size += (f->io_size + f->file_offset);
683 f->real_file_size = f->io_size + f->file_offset;
684 fio_file_set_extend(f);
688 if (!td->o.size || td->o.size > total_size)
689 td->o.size = total_size;
692 * See if we need to extend some files
697 log_info("%s: Laying out IO file(s) (%u file(s) /"
698 " %LuMB)\n", td->o.name, need_extend,
701 for_each_file(td, f, i) {
702 unsigned long long old_len = -1ULL, extend_len = -1ULL;
704 if (!fio_file_extend(f))
707 assert(f->filetype == FIO_TYPE_FILE);
708 fio_file_clear_extend(f);
709 if (!td->o.fill_device) {
710 old_len = f->real_file_size;
711 extend_len = f->io_size + f->file_offset -
714 f->real_file_size = (f->io_size + f->file_offset);
715 err = extend_file(td, f);
719 err = __file_invalidate_cache(td, f, old_len,
732 if (!td->o.zone_size)
733 td->o.zone_size = td->o.size;
736 * iolog already set the total io size, if we read back
739 if (!td->o.read_iolog_file)
740 td->total_io_size = td->o.size * td->o.loops;
743 log_err("%s: you need to specify valid offset=\n", td->o.name);
747 int pre_read_files(struct thread_data *td)
752 dprint(FD_FILE, "pre_read files\n");
754 for_each_file(td, f, i) {
755 pre_read_file(td, f);
761 int init_random_map(struct thread_data *td)
763 unsigned long long blocks, num_maps;
767 if (td->o.norandommap || !td_random(td))
770 for_each_file(td, f, i) {
771 blocks = (f->real_file_size + td->o.rw_min_bs - 1) /
772 (unsigned long long) td->o.rw_min_bs;
773 num_maps = (blocks + BLOCKS_PER_MAP - 1) /
774 (unsigned long long) BLOCKS_PER_MAP;
775 f->file_map = smalloc(num_maps * sizeof(int));
777 f->num_maps = num_maps;
780 if (!td->o.softrandommap) {
781 log_err("fio: failed allocating random map. If running"
782 " a large number of jobs, try the 'norandommap'"
783 " option or set 'softrandommap'. Or give"
784 " a larger --alloc-size to fio.\n");
788 log_info("fio: file %s failed allocating random map. Running "
789 "job without.\n", f->file_name);
796 void close_files(struct thread_data *td)
801 for_each_file(td, f, i) {
802 if (fio_file_open(f))
803 td_io_close_file(td, f);
807 void close_and_free_files(struct thread_data *td)
812 dprint(FD_FILE, "close files\n");
814 for_each_file(td, f, i) {
815 if (td->o.unlink && f->filetype == FIO_TYPE_FILE) {
816 dprint(FD_FILE, "free unlink %s\n", f->file_name);
817 unlink(f->file_name);
820 if (fio_file_open(f))
821 td_io_close_file(td, f);
832 td->o.filename = NULL;
839 static void get_file_type(struct fio_file *f)
843 if (!strcmp(f->file_name, "-"))
844 f->filetype = FIO_TYPE_PIPE;
846 f->filetype = FIO_TYPE_FILE;
848 if (!stat(f->file_name, &sb)) {
849 if (S_ISBLK(sb.st_mode))
850 f->filetype = FIO_TYPE_BD;
851 else if (S_ISCHR(sb.st_mode))
852 f->filetype = FIO_TYPE_CHAR;
853 else if (S_ISFIFO(sb.st_mode))
854 f->filetype = FIO_TYPE_PIPE;
858 int add_file(struct thread_data *td, const char *fname)
860 int cur_files = td->files_index;
861 char file_name[PATH_MAX];
865 dprint(FD_FILE, "add file %s\n", fname);
867 f = smalloc(sizeof(*f));
869 log_err("fio: smalloc OOM\n");
875 if (td->files_size <= td->files_index) {
876 int new_size = td->o.nr_files + 1;
878 dprint(FD_FILE, "resize file array to %d files\n", new_size);
880 td->files = realloc(td->files, new_size * sizeof(f));
881 td->files_size = new_size;
883 td->files[cur_files] = f;
886 * init function, io engine may not be loaded yet
888 if (td->io_ops && (td->io_ops->flags & FIO_DISKLESSIO))
889 f->real_file_size = -1ULL;
892 len = sprintf(file_name, "%s/", td->o.directory);
894 sprintf(file_name + len, "%s", fname);
895 f->file_name = smalloc_strdup(file_name);
897 log_err("fio: smalloc OOM\n");
903 switch (td->o.file_lock_mode) {
906 case FILE_LOCK_READWRITE:
907 f->lock = fio_mutex_rw_init();
909 case FILE_LOCK_EXCLUSIVE:
910 f->lock = fio_mutex_init(1);
913 log_err("fio: unknown lock mode: %d\n", td->o.file_lock_mode);
918 if (f->filetype == FIO_TYPE_FILE)
919 td->nr_normal_files++;
921 dprint(FD_FILE, "file %p \"%s\" added at %d\n", f, f->file_name,
927 void get_file(struct fio_file *f)
929 dprint(FD_FILE, "get file %s, ref=%d\n", f->file_name, f->references);
930 assert(fio_file_open(f));
934 int put_file(struct thread_data *td, struct fio_file *f)
936 int f_ret = 0, ret = 0;
938 dprint(FD_FILE, "put file %s, ref=%d\n", f->file_name, f->references);
940 if (!fio_file_open(f)) {
945 assert(f->references);
949 if (should_fsync(td) && td->o.fsync_on_close)
950 f_ret = fsync(f->fd);
952 if (td->io_ops->close_file)
953 ret = td->io_ops->close_file(td, f);
959 fio_file_clear_open(f);
964 void lock_file(struct thread_data *td, struct fio_file *f, enum fio_ddir ddir)
966 if (!f->lock || td->o.file_lock_mode == FILE_LOCK_NONE)
969 if (f->lock_owner == td && f->lock_batch--)
972 if (td->o.file_lock_mode == FILE_LOCK_READWRITE) {
973 if (ddir == DDIR_READ)
974 fio_mutex_down_read(f->lock);
976 fio_mutex_down_write(f->lock);
977 } else if (td->o.file_lock_mode == FILE_LOCK_EXCLUSIVE)
978 fio_mutex_down(f->lock);
981 f->lock_batch = td->o.lockfile_batch;
985 void unlock_file(struct thread_data *td, struct fio_file *f)
987 if (!f->lock || td->o.file_lock_mode == FILE_LOCK_NONE)
992 if (td->o.file_lock_mode == FILE_LOCK_READWRITE) {
993 const int is_read = f->lock_ddir == DDIR_READ;
994 int val = fio_mutex_getval(f->lock);
996 if ((is_read && val == 1) || (!is_read && val == -1))
997 f->lock_owner = NULL;
1000 fio_mutex_up_read(f->lock);
1002 fio_mutex_up_write(f->lock);
1003 } else if (td->o.file_lock_mode == FILE_LOCK_EXCLUSIVE) {
1004 int val = fio_mutex_getval(f->lock);
1007 f->lock_owner = NULL;
1009 fio_mutex_up(f->lock);
1013 void unlock_file_all(struct thread_data *td, struct fio_file *f)
1015 if (f->lock_owner != td)
1022 static int recurse_dir(struct thread_data *td, const char *dirname)
1028 D = opendir(dirname);
1030 char buf[FIO_VERROR_SIZE];
1032 snprintf(buf, FIO_VERROR_SIZE - 1, "opendir(%s)", dirname);
1033 td_verror(td, errno, buf);
1037 while ((dir = readdir(D)) != NULL) {
1038 char full_path[PATH_MAX];
1041 if (!strcmp(dir->d_name, ".") || !strcmp(dir->d_name, ".."))
1044 sprintf(full_path, "%s/%s", dirname, dir->d_name);
1046 if (lstat(full_path, &sb) == -1) {
1047 if (errno != ENOENT) {
1048 td_verror(td, errno, "stat");
1053 if (S_ISREG(sb.st_mode)) {
1054 add_file(td, full_path);
1058 if (!S_ISDIR(sb.st_mode))
1061 ret = recurse_dir(td, full_path);
1070 int add_dir_files(struct thread_data *td, const char *path)
1072 int ret = recurse_dir(td, path);
1075 log_info("fio: opendir added %d files\n", td->o.nr_files);
1080 void dup_files(struct thread_data *td, struct thread_data *org)
1085 dprint(FD_FILE, "dup files: %d\n", org->files_index);
1090 td->files = malloc(org->files_index * sizeof(f));
1092 for_each_file(org, f, i) {
1093 struct fio_file *__f;
1095 __f = smalloc(sizeof(*__f));
1097 log_err("fio: smalloc OOM\n");
1103 __f->file_name = smalloc_strdup(f->file_name);
1104 if (!__f->file_name) {
1105 log_err("fio: smalloc OOM\n");
1109 __f->filetype = f->filetype;
1117 * Returns the index that matches the filename, or -1 if not there
1119 int get_fileno(struct thread_data *td, const char *fname)
1124 for_each_file(td, f, i)
1125 if (!strcmp(f->file_name, fname))
1132 * For log usage, where we add/open/close files automatically
1134 void free_release_files(struct thread_data *td)
1137 td->files_index = 0;
1138 td->nr_normal_files = 0;