15 #include "lib/axmap.h"
19 #ifdef CONFIG_LINUX_FALLOCATE
20 #include <linux/falloc.h>
23 static FLIST_HEAD(filename_list);
26 * List entry for filename_list
29 struct flist_head list;
33 static inline void clear_error(struct thread_data *td)
39 static int native_fallocate(struct thread_data *td, struct fio_file *f)
43 success = fio_fallocate(f, 0, f->real_file_size);
44 dprint(FD_FILE, "native fallocate of file %s size %llu was "
45 "%ssuccessful\n", f->file_name,
46 (unsigned long long) f->real_file_size,
53 dprint(FD_FILE, "native fallocate is not implemented\n");
58 static void fallocate_file(struct thread_data *td, struct fio_file *f)
60 if (td->o.fill_device)
63 switch (td->o.fallocate_mode) {
64 case FIO_FALLOCATE_NATIVE:
65 native_fallocate(td, f);
67 case FIO_FALLOCATE_NONE:
69 #ifdef CONFIG_POSIX_FALLOCATE
70 case FIO_FALLOCATE_POSIX: {
73 dprint(FD_FILE, "posix_fallocate file %s size %llu\n",
75 (unsigned long long) f->real_file_size);
77 r = posix_fallocate(f->fd, 0, f->real_file_size);
79 log_err("fio: posix_fallocate fails: %s\n", strerror(r));
82 #endif /* CONFIG_POSIX_FALLOCATE */
83 #ifdef CONFIG_LINUX_FALLOCATE
84 case FIO_FALLOCATE_KEEP_SIZE: {
87 dprint(FD_FILE, "fallocate(FALLOC_FL_KEEP_SIZE) "
88 "file %s size %llu\n", f->file_name,
89 (unsigned long long) f->real_file_size);
91 r = fallocate(f->fd, FALLOC_FL_KEEP_SIZE, 0, f->real_file_size);
93 td_verror(td, errno, "fallocate");
97 #endif /* CONFIG_LINUX_FALLOCATE */
98 case FIO_FALLOCATE_TRUNCATE: {
101 dprint(FD_FILE, "ftruncate file %s size %llu\n",
103 (unsigned long long) f->real_file_size);
104 r = ftruncate(f->fd, f->real_file_size);
106 td_verror(td, errno, "ftruncate");
111 log_err("fio: unknown fallocate mode: %d\n", td->o.fallocate_mode);
117 * Leaves f->fd open on success, caller must close
119 static int extend_file(struct thread_data *td, struct fio_file *f)
121 int new_layout = 0, unlink_file = 0, flags;
122 unsigned long long left;
123 unsigned long long bs;
127 log_err("fio: refusing extend of file due to read-only\n");
132 * check if we need to lay the file out complete again. fio
133 * does that for operations involving reads, or for writes
134 * where overwrite is set
137 (td_write(td) && td->o.overwrite && !td->o.file_append) ||
138 (td_write(td) && td_ioengine_flagged(td, FIO_NOEXTEND)))
140 if (td_write(td) && !td->o.overwrite && !td->o.file_append)
143 if (unlink_file || new_layout) {
146 dprint(FD_FILE, "layout unlink %s\n", f->file_name);
148 ret = td_io_unlink_file(td, f);
149 if (ret != 0 && ret != ENOENT) {
150 td_verror(td, errno, "unlink");
156 if (td->o.allow_create)
165 dprint(FD_FILE, "open file %s, flags %x\n", f->file_name, flags);
166 f->fd = open(f->file_name, flags, 0644);
170 if (err == ENOENT && !td->o.allow_create)
171 log_err("fio: file creation disallowed by "
172 "allow_file_create=0\n");
174 td_verror(td, err, "open");
178 fallocate_file(td, f);
181 * If our jobs don't require regular files initially, we're done.
187 * The size will be -1ULL when fill_device is used, so don't truncate
188 * or fallocate this file, just write it
190 if (!td->o.fill_device) {
191 dprint(FD_FILE, "truncate file %s, size %llu\n", f->file_name,
192 (unsigned long long) f->real_file_size);
193 if (ftruncate(f->fd, f->real_file_size) == -1) {
194 if (errno != EFBIG) {
195 td_verror(td, errno, "ftruncate");
201 left = f->real_file_size;
202 bs = td->o.max_bs[DDIR_WRITE];
208 td_verror(td, errno, "malloc");
212 while (left && !td->terminate) {
218 fill_io_buffer(td, b, bs, bs);
220 r = write(f->fd, b, bs);
229 if (__e == ENOSPC || __e == EDQUOT) {
230 const char *__e_name;
231 if (td->o.fill_device)
237 log_info("fio: %s on laying out "
238 "file, stopping\n", __e_name);
240 td_verror(td, errno, "write");
242 td_verror(td, EIO, "write");
249 dprint(FD_FILE, "terminate unlink %s\n", f->file_name);
250 td_io_unlink_file(td, f);
251 } else if (td->o.create_fsync) {
252 if (fsync(f->fd) < 0) {
253 td_verror(td, errno, "fsync");
257 if (td->o.fill_device && !td_write(td)) {
258 fio_file_clear_size_known(f);
259 if (td_io_get_file_size(td, f))
261 if (f->io_size > f->real_file_size)
262 f->io_size = f->real_file_size;
276 static bool pre_read_file(struct thread_data *td, struct fio_file *f)
278 int r, did_open = 0, old_runstate;
279 unsigned long long left;
280 unsigned long long bs;
284 if (td_ioengine_flagged(td, FIO_PIPEIO) ||
285 td_ioengine_flagged(td, FIO_NOIO))
288 if (f->filetype == FIO_TYPE_CHAR)
291 if (!fio_file_open(f)) {
292 if (td->io_ops->open_file(td, f)) {
293 log_err("fio: cannot pre-read, failed to open file\n");
299 old_runstate = td_bump_runstate(td, TD_PRE_READING);
302 bs = td->o.max_bs[DDIR_READ];
308 td_verror(td, errno, "malloc");
314 if (lseek(f->fd, f->file_offset, SEEK_SET) < 0) {
315 td_verror(td, errno, "lseek");
316 log_err("fio: failed to lseek pre-read file\n");
321 while (left && !td->terminate) {
325 r = read(f->fd, b, bs);
331 td_verror(td, EIO, "pre_read");
337 td_restore_runstate(td, old_runstate);
340 td->io_ops->close_file(td, f);
347 * Generic function to prepopulate regular file with data.
348 * Useful if you want to make sure I/O engine has data to read.
349 * Leaves f->fd open on success, caller must close.
351 int generic_prepopulate_file(struct thread_data *td, struct fio_file *f)
354 unsigned long long left, bs;
357 /* generic function for regular files only */
358 assert(f->filetype == FIO_TYPE_FILE);
361 log_err("fio: refusing to write a file due to read-only\n");
366 if (td->o.allow_create)
373 dprint(FD_FILE, "open file %s, flags %x\n", f->file_name, flags);
374 f->fd = open(f->file_name, flags, 0644);
378 if (err == ENOENT && !td->o.allow_create)
379 log_err("fio: file creation disallowed by "
380 "allow_file_create=0\n");
382 td_verror(td, err, "open");
386 left = f->real_file_size;
387 bs = td->o.max_bs[DDIR_WRITE];
393 td_verror(td, errno, "malloc");
397 while (left && !td->terminate) {
403 fill_io_buffer(td, b, bs, bs);
405 r = write(f->fd, b, bs);
410 td_verror(td, errno, "write");
416 dprint(FD_FILE, "terminate unlink %s\n", f->file_name);
417 td_io_unlink_file(td, f);
418 } else if (td->o.create_fsync) {
419 if (fsync(f->fd) < 0) {
420 td_verror(td, errno, "fsync");
435 unsigned long long get_rand_file_size(struct thread_data *td)
437 unsigned long long ret, sized;
441 frand_max = rand_max(&td->file_size_state);
442 r = __rand(&td->file_size_state);
443 sized = td->o.file_size_high - td->o.file_size_low;
444 ret = (unsigned long long) ((double) sized * (r / (frand_max + 1.0)));
445 ret += td->o.file_size_low;
446 ret -= (ret % td->o.rw_min_bs);
450 static int file_size(struct thread_data *td, struct fio_file *f)
454 if (stat(f->file_name, &st) == -1) {
455 td_verror(td, errno, "fstat");
459 f->real_file_size = st.st_size;
463 static int bdev_size(struct thread_data *td, struct fio_file *f)
465 unsigned long long bytes = 0;
468 if (td->io_ops->open_file(td, f)) {
469 log_err("fio: failed opening blockdev %s for size check\n",
474 r = blockdev_size(f, &bytes);
476 td_verror(td, r, "blockdev_size");
481 log_err("%s: zero sized block device?\n", f->file_name);
485 f->real_file_size = bytes;
486 td->io_ops->close_file(td, f);
489 td->io_ops->close_file(td, f);
493 static int char_size(struct thread_data *td, struct fio_file *f)
495 #ifdef FIO_HAVE_CHARDEV_SIZE
496 unsigned long long bytes = 0;
499 if (td->io_ops->open_file(td, f)) {
500 log_err("fio: failed opening chardev %s for size check\n",
505 r = chardev_size(f, &bytes);
507 td_verror(td, r, "chardev_size");
512 log_err("%s: zero sized char device?\n", f->file_name);
516 f->real_file_size = bytes;
517 td->io_ops->close_file(td, f);
520 td->io_ops->close_file(td, f);
523 f->real_file_size = -1ULL;
528 static int get_file_size(struct thread_data *td, struct fio_file *f)
532 if (fio_file_size_known(f))
535 if (f->filetype == FIO_TYPE_FILE)
536 ret = file_size(td, f);
537 else if (f->filetype == FIO_TYPE_BLOCK)
538 ret = bdev_size(td, f);
539 else if (f->filetype == FIO_TYPE_CHAR)
540 ret = char_size(td, f);
542 f->real_file_size = -1;
543 log_info("%s: failed to get file size of %s\n", td->o.name,
545 return 1; /* avoid offset extends end error message */
549 * Leave ->real_file_size with 0 since it could be expectation
550 * of initial setup for regular files.
556 * ->file_offset normally hasn't been initialized yet, so this
557 * is basically always false unless ->real_file_size is -1, but
558 * if ->real_file_size is -1 this message doesn't make sense.
559 * As a result, this message is basically useless.
561 if (f->file_offset > f->real_file_size) {
562 log_err("%s: offset extends end (%llu > %llu)\n", td->o.name,
563 (unsigned long long) f->file_offset,
564 (unsigned long long) f->real_file_size);
568 fio_file_set_size_known(f);
572 static int __file_invalidate_cache(struct thread_data *td, struct fio_file *f,
573 unsigned long long off,
574 unsigned long long len)
576 int errval = 0, ret = 0;
585 off = f->file_offset;
587 if (len == -1ULL || off == -1ULL)
590 if (td->io_ops->invalidate) {
591 dprint(FD_IO, "invalidate %s cache %s\n", td->io_ops->name,
593 ret = td->io_ops->invalidate(td, f);
596 } else if (td_ioengine_flagged(td, FIO_DISKLESSIO)) {
597 dprint(FD_IO, "invalidate not supported by ioengine %s\n",
599 } else if (f->filetype == FIO_TYPE_FILE) {
600 dprint(FD_IO, "declare unneeded cache %s: %llu/%llu\n",
601 f->file_name, off, len);
602 ret = posix_fadvise(f->fd, off, len, POSIX_FADV_DONTNEED);
605 } else if (f->filetype == FIO_TYPE_BLOCK) {
608 dprint(FD_IO, "drop page cache %s\n", f->file_name);
609 ret = blockdev_invalidate_cache(f);
610 while (ret < 0 && errno == EAGAIN && retry_count++ < 25) {
612 * Linux multipath devices reject ioctl while
613 * the maps are being updated. That window can
614 * last tens of milliseconds; we'll try up to
615 * a quarter of a second.
618 ret = blockdev_invalidate_cache(f);
620 if (ret < 0 && errno == EACCES && geteuid()) {
621 if (!fio_did_warn(FIO_WARN_ROOT_FLUSH)) {
622 log_err("fio: only root may flush block "
623 "devices. Cache flush bypassed!\n");
628 } else if (f->filetype == FIO_TYPE_CHAR ||
629 f->filetype == FIO_TYPE_PIPE) {
630 dprint(FD_IO, "invalidate not supported %s\n", f->file_name);
634 * Cache flushing isn't a fatal condition, and we know it will
635 * happen on some platforms where we don't have the proper
636 * function to flush eg block device caches. So just warn and
637 * continue on our way.
640 log_info("fio: cache invalidation of %s failed: %s\n",
641 f->file_name, strerror(errval));
647 int file_invalidate_cache(struct thread_data *td, struct fio_file *f)
649 if (!fio_file_open(f))
652 return __file_invalidate_cache(td, f, -1ULL, -1ULL);
655 int generic_close_file(struct thread_data fio_unused *td, struct fio_file *f)
659 dprint(FD_FILE, "fd close %s\n", f->file_name);
663 if (close(f->fd) < 0)
668 if (f->shadow_fd != -1) {
677 int file_lookup_open(struct fio_file *f, int flags)
679 struct fio_file *__f;
682 __f = lookup_file_hash(f->file_name);
684 dprint(FD_FILE, "found file in hash %s\n", f->file_name);
688 dprint(FD_FILE, "file not found in hash %s\n", f->file_name);
696 f->fd = open(f->file_name, flags, 0600);
700 static int file_close_shadow_fds(struct thread_data *td)
706 for_each_file(td, f, i) {
707 if (f->shadow_fd == -1)
718 int generic_open_file(struct thread_data *td, struct fio_file *f)
724 dprint(FD_FILE, "fd open %s\n", f->file_name);
726 if (!strcmp(f->file_name, "-")) {
728 log_err("fio: can't read/write to stdin/out\n");
734 * move output logging to stderr, if we are writing to stdout
743 flags |= OS_O_DIRECT;
746 td_verror(td, EINVAL, "OS does not support atomic IO");
749 flags |= OS_O_DIRECT | FIO_O_ATOMIC;
751 flags |= td->o.sync_io;
752 if (td->o.create_on_open && td->o.allow_create)
755 if (f->filetype != FIO_TYPE_FILE)
756 flags |= FIO_O_NOATIME;
763 if (f->filetype == FIO_TYPE_FILE && td->o.allow_create)
767 f->fd = dup(STDOUT_FILENO);
769 from_hash = file_lookup_open(f, flags);
770 } else if (td_read(td)) {
771 if (f->filetype == FIO_TYPE_CHAR && !read_only)
777 f->fd = dup(STDIN_FILENO);
779 from_hash = file_lookup_open(f, flags);
780 } else if (td_trim(td)) {
781 assert(!td_rw(td)); /* should have matched above */
784 from_hash = file_lookup_open(f, flags);
788 char buf[FIO_VERROR_SIZE];
791 if (__e == EPERM && (flags & FIO_O_NOATIME)) {
792 flags &= ~FIO_O_NOATIME;
795 if (__e == EMFILE && file_close_shadow_fds(td))
798 snprintf(buf, sizeof(buf), "open(%s)", f->file_name);
800 if (__e == EINVAL && (flags & OS_O_DIRECT)) {
801 log_err("fio: looks like your file system does not " \
802 "support direct=1/buffered=0\n");
805 td_verror(td, __e, buf);
809 if (!from_hash && f->fd != -1) {
810 if (add_file_hash(f)) {
814 * Stash away descriptor for later close. This is to
815 * work-around a "feature" on Linux, where a close of
816 * an fd that has been opened for write will trigger
817 * udev to call blkid to check partitions, fs id, etc.
818 * That pollutes the device cache, which can slow down
819 * unbuffered accesses.
821 if (f->shadow_fd == -1)
822 f->shadow_fd = f->fd;
825 * OK to ignore, we haven't done anything
828 ret = generic_close_file(td, f);
838 * This function i.e. get_file_size() is the default .get_file_size
839 * implementation of majority of I/O engines.
841 int generic_get_file_size(struct thread_data *td, struct fio_file *f)
843 return get_file_size(td, f);
847 * open/close all files, so that ->real_file_size gets set
849 static int get_file_sizes(struct thread_data *td)
855 for_each_file(td, f, i) {
856 dprint(FD_FILE, "get file size for %p/%d/%s\n", f, i,
859 if (td_io_get_file_size(td, f)) {
860 if (td->error != ENOENT) {
861 log_err("%s\n", td->verror);
869 * There are corner cases where we end up with -1 for
870 * ->real_file_size due to unsupported file type, etc.
871 * We then just set to size option value divided by number
872 * of files, similar to the way file ->io_size is set.
873 * stat(2) failure doesn't set ->real_file_size to -1.
875 if (f->real_file_size == -1ULL && td->o.size)
876 f->real_file_size = td->o.size / td->o.nr_files;
883 struct flist_head list;
890 * Get free number of bytes for each file on each unique mount.
892 static unsigned long long get_fs_free_counts(struct thread_data *td)
894 struct flist_head *n, *tmp;
895 unsigned long long ret = 0;
896 struct fio_mount *fm;
901 for_each_file(td, f, i) {
905 if (f->filetype == FIO_TYPE_BLOCK || f->filetype == FIO_TYPE_CHAR) {
906 if (f->real_file_size != -1ULL)
907 ret += f->real_file_size;
909 } else if (f->filetype != FIO_TYPE_FILE)
912 snprintf(buf, FIO_ARRAY_SIZE(buf), "%s", f->file_name);
914 if (stat(buf, &sb) < 0) {
918 if (stat(buf, &sb) < 0)
923 flist_for_each(n, &list) {
924 fm = flist_entry(n, struct fio_mount, list);
925 if (fm->key == sb.st_dev)
934 fm = calloc(1, sizeof(*fm));
935 snprintf(fm->__base, FIO_ARRAY_SIZE(fm->__base), "%s", buf);
936 fm->base = basename(fm->__base);
938 flist_add(&fm->list, &list);
941 flist_for_each_safe(n, tmp, &list) {
942 unsigned long long sz;
944 fm = flist_entry(n, struct fio_mount, list);
945 flist_del(&fm->list);
947 sz = get_fs_free_size(fm->base);
948 if (sz && sz != -1ULL)
957 uint64_t get_start_offset(struct thread_data *td, struct fio_file *f)
960 struct thread_options *o = &td->o;
961 unsigned long long align_bs;
962 unsigned long long offset;
963 unsigned long long increment;
965 if (o->file_append && f->filetype == FIO_TYPE_FILE)
966 return f->real_file_size;
968 if (o->offset_increment_percent) {
969 assert(!o->offset_increment);
970 increment = o->offset_increment_percent * f->real_file_size / 100;
973 increment = o->offset_increment;
975 if (o->start_offset_percent > 0) {
976 /* calculate the raw offset */
977 offset = (f->real_file_size * o->start_offset_percent / 100) +
978 (td->subjob_number * increment);
982 /* start_offset_percent not set */
983 offset = o->start_offset +
984 td->subjob_number * increment;
989 * if offset_align is provided, use it
991 if (fio_option_is_set(o, start_offset_align)) {
992 align_bs = o->start_offset_align;
994 /* else take the minimum block size */
995 align_bs = td_min_bs(td);
999 * block align the offset at the next available boundary at
1000 * ceiling(offset / align_bs) * align_bs
1002 offset = (offset / align_bs + (offset % align_bs != 0)) * align_bs;
1009 * Find longest path component that exists and return its length
1011 int longest_existing_path(char *path) {
1022 sprintf(buf, "%s", path);
1025 buf_pos = strrchr(buf, FIO_OS_PATH_SEPARATOR);
1032 *(buf_pos + 1) = '\0';
1035 dwAttr = GetFileAttributesA(buf);
1036 if (dwAttr != INVALID_FILE_ATTRIBUTES) {
1040 if (stat(buf, &sb) == 0)
1044 offset = buf_pos - buf;
1052 static bool create_work_dirs(struct thread_data *td, const char *fname)
1054 char path[PATH_MAX];
1058 snprintf(path, PATH_MAX, "%s", fname);
1061 offset = longest_existing_path(path);
1062 end = start + offset;
1063 while ((end = strchr(end, FIO_OS_PATH_SEPARATOR)) != NULL) {
1070 if (fio_mkdir(path, 0700) && errno != EEXIST) {
1071 log_err("fio: failed to create dir (%s): %s\n",
1072 start, strerror(errno));
1075 *end = FIO_OS_PATH_SEPARATOR;
1078 td->flags |= TD_F_DIRS_CREATED;
1083 * Open the files and setup files sizes, creating files if necessary.
1085 int setup_files(struct thread_data *td)
1087 unsigned long long total_size, extend_size;
1088 struct thread_options *o = &td->o;
1090 unsigned int i, nr_fs_extra = 0;
1091 int err = 0, need_extend;
1093 const unsigned long long bs = td_min_bs(td);
1096 dprint(FD_FILE, "setup files\n");
1098 old_state = td_bump_runstate(td, TD_SETTING_UP);
1100 for_each_file(td, f, i) {
1101 if (!td_ioengine_flagged(td, FIO_DISKLESSIO) &&
1102 strchr(f->file_name, FIO_OS_PATH_SEPARATOR) &&
1103 !(td->flags & TD_F_DIRS_CREATED) &&
1104 !create_work_dirs(td, f->file_name))
1109 * Find out physical size of files or devices for this thread,
1110 * before we determine I/O size and range of our targets.
1111 * If ioengine defines a setup() method, it's responsible for
1112 * opening the files and setting f->real_file_size to indicate
1113 * the valid range for that file.
1115 if (td->io_ops->setup)
1116 err = td->io_ops->setup(td);
1118 err = get_file_sizes(td);
1123 if (o->read_iolog_file)
1126 if (td->o.zone_mode == ZONE_MODE_ZBD) {
1127 err = zbd_init_files(td);
1131 zbd_recalc_options_with_zone_granularity(td);
1134 * check sizes. if the files/devices do not exist and the size
1135 * isn't passed to fio, abort.
1138 for_each_file(td, f, i) {
1140 if (f->real_file_size == -1ULL)
1143 total_size += f->real_file_size;
1147 td->fill_device_size = get_fs_free_counts(td);
1150 * device/file sizes are zero and no size given, punt
1152 if ((!total_size || total_size == -1ULL) && !o->size &&
1153 !td_ioengine_flagged(td, FIO_NOIO) && !o->fill_device &&
1154 !(o->nr_files && (o->file_size_low || o->file_size_high))) {
1155 log_err("%s: you need to specify size=\n", o->name);
1156 td_verror(td, EINVAL, "total_file_size");
1161 * Calculate per-file size and potential extra size for the
1162 * first files, if needed (i.e. if we don't have a fixed size).
1164 if (!o->file_size_low && o->nr_files) {
1167 fs = o->size / o->nr_files;
1168 all_fs = fs * o->nr_files;
1170 if (all_fs < o->size)
1171 nr_fs_extra = (o->size - all_fs) / bs;
1175 * now file sizes are known, so we can set ->io_size. if size= is
1176 * not given, ->io_size is just equal to ->real_file_size. if size
1177 * is given, ->io_size is size / nr_files.
1179 extend_size = total_size = 0;
1181 for_each_file(td, f, i) {
1182 f->file_offset = get_start_offset(td, f);
1185 * Update ->io_size depending on options specified.
1186 * ->file_size_low being 0 means filesize option isn't set.
1187 * Non zero ->file_size_low equals ->file_size_high means
1188 * filesize option is set in a fixed size format.
1189 * Non zero ->file_size_low not equals ->file_size_high means
1190 * filesize option is set in a range format.
1192 if (!o->file_size_low) {
1194 * no file size or range given, file size is equal to
1195 * total size divided by number of files. If the size
1196 * doesn't divide nicely with the min blocksize,
1197 * make the first files bigger.
1206 * We normally don't come here for regular files, but
1207 * if the result is 0 for a regular file, set it to the
1208 * real file size. This could be size of the existing
1209 * one if it already exists, but otherwise will be set
1210 * to 0. A new file won't be created because
1211 * ->io_size + ->file_offset equals ->real_file_size.
1214 if (f->file_offset > f->real_file_size)
1216 f->io_size = f->real_file_size - f->file_offset;
1218 log_info("fio: file %s may be ignored\n",
1221 } else if (f->real_file_size < o->file_size_low ||
1222 f->real_file_size > o->file_size_high) {
1223 if (f->file_offset > o->file_size_low)
1226 * file size given. if it's fixed, use that. if it's a
1227 * range, generate a random size in-between.
1229 if (o->file_size_low == o->file_size_high)
1230 f->io_size = o->file_size_low - f->file_offset;
1232 f->io_size = get_rand_file_size(td)
1236 f->io_size = f->real_file_size - f->file_offset;
1238 if (f->io_size == -1ULL)
1243 if (o->size_percent && o->size_percent != 100) {
1246 file_size = f->io_size + f->file_offset;
1247 f->io_size = (file_size *
1248 o->size_percent) / 100;
1249 if (f->io_size > (file_size - f->file_offset))
1250 f->io_size = file_size - f->file_offset;
1252 f->io_size -= (f->io_size % td_min_bs(td));
1255 io_size = f->io_size;
1256 if (o->io_size_percent && o->io_size_percent != 100) {
1257 io_size *= o->io_size_percent;
1261 total_size += io_size;
1264 if (f->filetype == FIO_TYPE_FILE &&
1265 (f->io_size + f->file_offset) > f->real_file_size) {
1266 if (!td_ioengine_flagged(td, FIO_DISKLESSIO) &&
1267 !o->create_on_open) {
1269 extend_size += (f->io_size + f->file_offset);
1270 fio_file_set_extend(f);
1271 } else if (!td_ioengine_flagged(td, FIO_DISKLESSIO) ||
1272 (td_ioengine_flagged(td, FIO_DISKLESSIO) &&
1273 td_ioengine_flagged(td, FIO_FAKEIO)))
1274 f->real_file_size = f->io_size + f->file_offset;
1278 if (td->o.block_error_hist) {
1281 assert(td->o.nr_files == 1); /* checked in fixup_options */
1283 len = f->io_size / td->o.bs[DDIR_TRIM];
1284 if (len > MAX_NR_BLOCK_INFOS || len <= 0) {
1285 log_err("fio: cannot calculate block histogram with "
1286 "%d trim blocks, maximum %d\n",
1287 len, MAX_NR_BLOCK_INFOS);
1288 td_verror(td, EINVAL, "block_error_hist");
1292 td->ts.nr_block_infos = len;
1293 for (i = 0; i < len; i++)
1294 td->ts.block_infos[i] =
1295 BLOCK_INFO(0, BLOCK_STATE_UNINIT);
1297 td->ts.nr_block_infos = 0;
1299 if (!o->size || (total_size && o->size > total_size))
1300 o->size = total_size;
1302 if (o->size < td_min_bs(td)) {
1303 log_err("fio: blocksize is larger than data set range\n");
1308 * See if we need to extend some files, typically needed when our
1309 * target regular files don't exist yet, but our jobs require them
1310 * initially due to read I/Os.
1314 if (output_format & FIO_OUTPUT_NORMAL) {
1315 log_info("%s: Laying out IO file%s (%u file%s / %s%lluMiB)\n",
1317 need_extend > 1 ? "s" : "",
1319 need_extend > 1 ? "s" : "",
1320 need_extend > 1 ? "total " : "",
1324 for_each_file(td, f, i) {
1325 unsigned long long old_len = -1ULL, extend_len = -1ULL;
1327 if (!fio_file_extend(f))
1330 assert(f->filetype == FIO_TYPE_FILE);
1331 fio_file_clear_extend(f);
1332 if (!o->fill_device) {
1333 old_len = f->real_file_size;
1334 extend_len = f->io_size + f->file_offset -
1337 f->real_file_size = (f->io_size + f->file_offset);
1338 err = extend_file(td, f);
1342 err = __file_invalidate_cache(td, f, old_len,
1346 * Shut up static checker
1362 * Prepopulate files with data. It might be expected to read some
1363 * "real" data instead of zero'ed files (if no writes to file occurred
1364 * prior to a read job). Engine has to provide a way to do that.
1366 if (td->io_ops->prepopulate_file) {
1369 for_each_file(td, f, i) {
1370 if (output_format & FIO_OUTPUT_NORMAL) {
1371 log_info("%s: Prepopulating IO file (%s)\n",
1372 o->name, f->file_name);
1375 err = td->io_ops->prepopulate_file(td, f);
1379 err = __file_invalidate_cache(td, f, f->file_offset,
1383 * Shut up static checker
1399 * iolog already set the total io size, if we read back
1402 if (!o->read_iolog_file) {
1404 td->total_io_size = o->io_size * o->loops;
1406 td->total_io_size = o->size * o->loops;
1410 if (td->o.zone_mode == ZONE_MODE_ZBD) {
1411 err = zbd_setup_files(td);
1419 td_restore_runstate(td, old_state);
1424 log_err("%s: you need to specify valid offset=\n", o->name);
1426 td_restore_runstate(td, old_state);
1430 bool pre_read_files(struct thread_data *td)
1435 dprint(FD_FILE, "pre_read files\n");
1437 for_each_file(td, f, i) {
1438 if (!pre_read_file(td, f))
1445 static void __init_rand_distribution(struct thread_data *td, struct fio_file *f)
1447 unsigned int range_size, seed;
1451 range_size = min(td->o.min_bs[DDIR_READ], td->o.min_bs[DDIR_WRITE]);
1452 fsize = min(f->real_file_size, f->io_size);
1454 nranges = (fsize + range_size - 1ULL) / range_size;
1456 seed = jhash(f->file_name, strlen(f->file_name), 0) * td->thread_number;
1457 if (!td->o.rand_repeatable)
1458 seed = td->rand_seeds[4];
1460 if (td->o.random_distribution == FIO_RAND_DIST_ZIPF)
1461 zipf_init(&f->zipf, nranges, td->o.zipf_theta.u.f, td->o.random_center.u.f, seed);
1462 else if (td->o.random_distribution == FIO_RAND_DIST_PARETO)
1463 pareto_init(&f->zipf, nranges, td->o.pareto_h.u.f, td->o.random_center.u.f, seed);
1464 else if (td->o.random_distribution == FIO_RAND_DIST_GAUSS)
1465 gauss_init(&f->gauss, nranges, td->o.gauss_dev.u.f, td->o.random_center.u.f, seed);
1468 static bool init_rand_distribution(struct thread_data *td)
1474 if (td->o.random_distribution == FIO_RAND_DIST_RANDOM ||
1475 td->o.random_distribution == FIO_RAND_DIST_ZONED ||
1476 td->o.random_distribution == FIO_RAND_DIST_ZONED_ABS)
1479 state = td_bump_runstate(td, TD_SETTING_UP);
1481 for_each_file(td, f, i)
1482 __init_rand_distribution(td, f);
1484 td_restore_runstate(td, state);
1489 * Check if the number of blocks exceeds the randomness capability of
1490 * the selected generator. Tausworthe is 32-bit, the others are fullly
1493 static int check_rand_gen_limits(struct thread_data *td, struct fio_file *f,
1496 if (blocks <= FRAND32_MAX)
1498 if (td->o.random_generator != FIO_RAND_GEN_TAUSWORTHE)
1502 * If the user hasn't specified a random generator, switch
1503 * to tausworthe64 with informational warning. If the user did
1504 * specify one, just warn.
1506 log_info("fio: file %s exceeds 32-bit tausworthe random generator.\n",
1509 if (!fio_option_is_set(&td->o, random_generator)) {
1510 log_info("fio: Switching to tausworthe64. Use the "
1511 "random_generator= option to get rid of this "
1513 td->o.random_generator = FIO_RAND_GEN_TAUSWORTHE64;
1518 * Just make this information to avoid breaking scripts.
1520 log_info("fio: Use the random_generator= option to switch to lfsr or "
1525 bool init_random_map(struct thread_data *td)
1527 unsigned long long blocks;
1531 if (init_rand_distribution(td))
1536 for_each_file(td, f, i) {
1537 uint64_t fsize = min(f->real_file_size, f->io_size);
1539 if (td->o.zone_mode == ZONE_MODE_STRIDED)
1540 fsize = td->o.zone_range;
1542 blocks = fsize / (unsigned long long) td->o.rw_min_bs;
1544 if (check_rand_gen_limits(td, f, blocks))
1547 if (td->o.random_generator == FIO_RAND_GEN_LFSR) {
1550 seed = td->rand_seeds[FIO_RAND_BLOCK_OFF];
1552 if (!lfsr_init(&f->lfsr, blocks, seed, 0)) {
1553 fio_file_set_lfsr(f);
1556 log_err("fio: failed initializing LFSR\n");
1559 } else if (!td->o.norandommap) {
1560 f->io_axmap = axmap_new(blocks);
1562 fio_file_set_axmap(f);
1565 } else if (td->o.norandommap)
1568 if (!td->o.softrandommap) {
1569 log_err("fio: failed allocating random map. If running"
1570 " a large number of jobs, try the 'norandommap'"
1571 " option or set 'softrandommap'. Or give"
1572 " a larger --alloc-size to fio.\n");
1576 log_info("fio: file %s failed allocating random map. Running "
1577 "job without.\n", f->file_name);
1583 void close_files(struct thread_data *td)
1588 for_each_file(td, f, i) {
1589 if (fio_file_open(f))
1590 td_io_close_file(td, f);
1594 void fio_file_free(struct fio_file *f)
1596 if (fio_file_axmap(f))
1597 axmap_free(f->io_axmap);
1598 if (!fio_file_smalloc(f)) {
1602 sfree(f->file_name);
1607 void close_and_free_files(struct thread_data *td)
1612 dprint(FD_FILE, "close files\n");
1614 for_each_file(td, f, i) {
1615 if (td->o.unlink && f->filetype == FIO_TYPE_FILE) {
1616 dprint(FD_FILE, "free unlink %s\n", f->file_name);
1617 td_io_unlink_file(td, f);
1620 if (fio_file_open(f))
1621 td_io_close_file(td, f);
1623 remove_file_hash(f);
1625 if (td->o.unlink && f->filetype == FIO_TYPE_FILE) {
1626 dprint(FD_FILE, "free unlink %s\n", f->file_name);
1627 td_io_unlink_file(td, f);
1634 td->o.filename = NULL;
1636 free(td->file_locks);
1637 td->files_index = 0;
1639 td->file_locks = NULL;
1640 td->o.file_lock_mode = FILE_LOCK_NONE;
1644 static void get_file_type(struct fio_file *f)
1648 if (!strcmp(f->file_name, "-"))
1649 f->filetype = FIO_TYPE_PIPE;
1651 f->filetype = FIO_TYPE_FILE;
1654 /* \\.\ is the device namespace in Windows, where every file is
1656 if (strncmp(f->file_name, "\\\\.\\", 4) == 0)
1657 f->filetype = FIO_TYPE_BLOCK;
1660 if (!stat(f->file_name, &sb)) {
1661 if (S_ISBLK(sb.st_mode))
1662 f->filetype = FIO_TYPE_BLOCK;
1663 else if (S_ISCHR(sb.st_mode))
1664 f->filetype = FIO_TYPE_CHAR;
1665 else if (S_ISFIFO(sb.st_mode))
1666 f->filetype = FIO_TYPE_PIPE;
1670 static bool __is_already_allocated(const char *fname, bool set)
1672 struct flist_head *entry;
1675 ret = file_bloom_exists(fname, set);
1679 flist_for_each(entry, &filename_list) {
1680 struct file_name *fn;
1682 fn = flist_entry(entry, struct file_name, list);
1684 if (!strcmp(fn->filename, fname))
1691 static bool is_already_allocated(const char *fname)
1695 fio_file_hash_lock();
1696 ret = __is_already_allocated(fname, false);
1697 fio_file_hash_unlock();
1702 static void set_already_allocated(const char *fname)
1704 struct file_name *fn;
1706 fn = malloc(sizeof(struct file_name));
1707 fn->filename = strdup(fname);
1709 fio_file_hash_lock();
1710 if (!__is_already_allocated(fname, true)) {
1711 flist_add_tail(&fn->list, &filename_list);
1714 fio_file_hash_unlock();
1722 static void free_already_allocated(void)
1724 struct flist_head *entry, *tmp;
1725 struct file_name *fn;
1727 if (flist_empty(&filename_list))
1730 fio_file_hash_lock();
1731 flist_for_each_safe(entry, tmp, &filename_list) {
1732 fn = flist_entry(entry, struct file_name, list);
1734 flist_del(&fn->list);
1738 fio_file_hash_unlock();
1741 static struct fio_file *alloc_new_file(struct thread_data *td)
1745 if (td_ioengine_flagged(td, FIO_NOFILEHASH))
1746 f = calloc(1, sizeof(*f));
1748 f = scalloc(1, sizeof(*f));
1756 fio_file_reset(td, f);
1757 if (!td_ioengine_flagged(td, FIO_NOFILEHASH))
1758 fio_file_set_smalloc(f);
1762 bool exists_and_not_regfile(const char *filename)
1766 if (lstat(filename, &sb) == -1)
1769 #ifndef WIN32 /* NOT Windows */
1770 if (S_ISREG(sb.st_mode))
1773 /* \\.\ is the device namespace in Windows, where every file
1774 * is a device node */
1775 if (S_ISREG(sb.st_mode) && strncmp(filename, "\\\\.\\", 4) != 0)
1782 int add_file(struct thread_data *td, const char *fname, int numjob, int inc)
1784 int cur_files = td->files_index;
1785 char file_name[PATH_MAX];
1789 dprint(FD_FILE, "add file %s\n", fname);
1791 if (td->o.directory)
1792 len = set_name_idx(file_name, PATH_MAX, td->o.directory, numjob,
1793 td->o.unique_filename);
1795 sprintf(file_name + len, "%s", fname);
1797 /* clean cloned siblings using existing files */
1798 if (numjob && is_already_allocated(file_name) &&
1799 !exists_and_not_regfile(fname))
1802 f = alloc_new_file(td);
1804 if (td->files_size <= td->files_index) {
1805 unsigned int new_size = td->o.nr_files + 1;
1807 dprint(FD_FILE, "resize file array to %d files\n", new_size);
1809 td->files = realloc(td->files, new_size * sizeof(f));
1810 if (td->files == NULL) {
1811 log_err("fio: realloc OOM\n");
1814 if (td->o.file_lock_mode != FILE_LOCK_NONE) {
1815 td->file_locks = realloc(td->file_locks, new_size);
1816 if (!td->file_locks) {
1817 log_err("fio: realloc OOM\n");
1820 td->file_locks[cur_files] = FILE_LOCK_NONE;
1822 td->files_size = new_size;
1824 td->files[cur_files] = f;
1825 f->fileno = cur_files;
1828 * init function, io engine may not be loaded yet
1830 if (td->io_ops && td_ioengine_flagged(td, FIO_DISKLESSIO))
1831 f->real_file_size = -1ULL;
1833 if (td_ioengine_flagged(td, FIO_NOFILEHASH))
1834 f->file_name = strdup(file_name);
1836 f->file_name = smalloc_strdup(file_name);
1838 /* can't handle smalloc failure from here */
1839 assert(f->file_name);
1843 switch (td->o.file_lock_mode) {
1844 case FILE_LOCK_NONE:
1846 case FILE_LOCK_READWRITE:
1847 f->rwlock = fio_rwlock_init();
1849 case FILE_LOCK_EXCLUSIVE:
1850 f->lock = fio_sem_init(FIO_SEM_UNLOCKED);
1853 log_err("fio: unknown lock mode: %d\n", td->o.file_lock_mode);
1859 if (td->o.numjobs > 1)
1860 set_already_allocated(file_name);
1865 dprint(FD_FILE, "file %p \"%s\" added at %d\n", f, f->file_name,
1871 int add_file_exclusive(struct thread_data *td, const char *fname)
1876 for_each_file(td, f, i) {
1877 if (!strcmp(f->file_name, fname))
1881 return add_file(td, fname, 0, 1);
1884 void get_file(struct fio_file *f)
1886 dprint(FD_FILE, "get file %s, ref=%d\n", f->file_name, f->references);
1887 assert(fio_file_open(f));
1891 int put_file(struct thread_data *td, struct fio_file *f)
1893 int f_ret = 0, ret = 0;
1895 dprint(FD_FILE, "put file %s, ref=%d\n", f->file_name, f->references);
1897 if (!fio_file_open(f)) {
1898 assert(f->fd == -1);
1902 assert(f->references);
1903 if (--f->references)
1906 disk_util_dec(f->du);
1908 if (td->o.file_lock_mode != FILE_LOCK_NONE)
1909 unlock_file_all(td, f);
1911 if (should_fsync(td) && td->o.fsync_on_close) {
1912 f_ret = fsync(f->fd);
1917 if (td->io_ops->close_file)
1918 ret = td->io_ops->close_file(td, f);
1923 td->nr_open_files--;
1924 fio_file_clear_closing(f);
1925 fio_file_clear_open(f);
1926 assert(f->fd == -1);
1930 void lock_file(struct thread_data *td, struct fio_file *f, enum fio_ddir ddir)
1932 if (!f->lock || td->o.file_lock_mode == FILE_LOCK_NONE)
1935 if (td->o.file_lock_mode == FILE_LOCK_READWRITE) {
1936 if (ddir == DDIR_READ)
1937 fio_rwlock_read(f->rwlock);
1939 fio_rwlock_write(f->rwlock);
1940 } else if (td->o.file_lock_mode == FILE_LOCK_EXCLUSIVE)
1941 fio_sem_down(f->lock);
1943 td->file_locks[f->fileno] = td->o.file_lock_mode;
1946 void unlock_file(struct thread_data *td, struct fio_file *f)
1948 if (!f->lock || td->o.file_lock_mode == FILE_LOCK_NONE)
1951 if (td->o.file_lock_mode == FILE_LOCK_READWRITE)
1952 fio_rwlock_unlock(f->rwlock);
1953 else if (td->o.file_lock_mode == FILE_LOCK_EXCLUSIVE)
1954 fio_sem_up(f->lock);
1956 td->file_locks[f->fileno] = FILE_LOCK_NONE;
1959 void unlock_file_all(struct thread_data *td, struct fio_file *f)
1961 if (td->o.file_lock_mode == FILE_LOCK_NONE || !td->file_locks)
1963 if (td->file_locks[f->fileno] != FILE_LOCK_NONE)
1967 static bool recurse_dir(struct thread_data *td, const char *dirname)
1973 D = opendir(dirname);
1975 char buf[FIO_VERROR_SIZE];
1977 snprintf(buf, FIO_VERROR_SIZE, "opendir(%s)", dirname);
1978 td_verror(td, errno, buf);
1982 while ((dir = readdir(D)) != NULL) {
1983 char full_path[PATH_MAX];
1986 if (!strcmp(dir->d_name, ".") || !strcmp(dir->d_name, ".."))
1989 sprintf(full_path, "%s%c%s", dirname, FIO_OS_PATH_SEPARATOR, dir->d_name);
1991 if (lstat(full_path, &sb) == -1) {
1992 if (errno != ENOENT) {
1993 td_verror(td, errno, "stat");
1999 if (S_ISREG(sb.st_mode)) {
2000 add_file(td, full_path, 0, 1);
2003 if (!S_ISDIR(sb.st_mode))
2006 ret = recurse_dir(td, full_path);
2015 int add_dir_files(struct thread_data *td, const char *path)
2017 int ret = recurse_dir(td, path);
2020 log_info("fio: opendir added %d files\n", td->o.nr_files);
2025 void dup_files(struct thread_data *td, struct thread_data *org)
2030 dprint(FD_FILE, "dup files: %d\n", org->files_index);
2035 td->files = malloc(org->files_index * sizeof(f));
2037 if (td->o.file_lock_mode != FILE_LOCK_NONE)
2038 td->file_locks = malloc(org->files_index);
2040 for_each_file(org, f, i) {
2041 struct fio_file *__f;
2043 __f = alloc_new_file(td);
2046 if (td_ioengine_flagged(td, FIO_NOFILEHASH))
2047 __f->file_name = strdup(f->file_name);
2049 __f->file_name = smalloc_strdup(f->file_name);
2051 /* can't handle smalloc failure from here */
2052 assert(__f->file_name);
2053 __f->filetype = f->filetype;
2056 if (td->o.file_lock_mode == FILE_LOCK_EXCLUSIVE)
2057 __f->lock = f->lock;
2058 else if (td->o.file_lock_mode == FILE_LOCK_READWRITE)
2059 __f->rwlock = f->rwlock;
2066 * Returns the index that matches the filename, or -1 if not there
2068 int get_fileno(struct thread_data *td, const char *fname)
2073 for_each_file(td, f, i)
2074 if (!strcmp(f->file_name, fname))
2081 * For log usage, where we add/open/close files automatically
2083 void free_release_files(struct thread_data *td)
2087 td->o.open_files = 0;
2088 td->files_index = 0;
2091 void fio_file_reset(struct thread_data *td, struct fio_file *f)
2095 for (i = 0; i < DDIR_RWDIR_CNT; i++) {
2096 f->last_pos[i] = f->file_offset;
2097 f->last_start[i] = -1ULL;
2100 if (fio_file_axmap(f))
2101 axmap_reset(f->io_axmap);
2102 else if (fio_file_lfsr(f))
2103 lfsr_reset(&f->lfsr, td->rand_seeds[FIO_RAND_BLOCK_OFF]);
2105 zbd_file_reset(td, f);
2108 bool fio_files_done(struct thread_data *td)
2113 for_each_file(td, f, i)
2114 if (!fio_file_done(f))
2120 /* free memory used in initialization phase only */
2121 void filesetup_mem_free(void)
2123 free_already_allocated();
2127 * This function is for platforms which support direct I/O but not O_DIRECT.
2129 int fio_set_directio(struct thread_data *td, struct fio_file *f)
2131 #ifdef FIO_OS_DIRECTIO
2132 int ret = fio_set_odirect(f);
2135 td_verror(td, ret, "fio_set_directio");
2136 #if defined(__sun__)
2137 if (ret == ENOTTY) { /* ENOTTY suggests RAW device or ZFS */
2138 log_err("fio: doing directIO to RAW devices or ZFS not supported\n");
2140 log_err("fio: the file system does not seem to support direct IO\n");
2143 log_err("fio: the file system does not seem to support direct IO\n");
2150 log_err("fio: direct IO is not supported on this host operating system\n");