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 */
99 log_err("fio: unknown fallocate mode: %d\n", td->o.fallocate_mode);
105 * Leaves f->fd open on success, caller must close
107 static int extend_file(struct thread_data *td, struct fio_file *f)
109 int new_layout = 0, unlink_file = 0, flags;
110 unsigned long long left;
111 unsigned long long bs;
115 log_err("fio: refusing extend of file due to read-only\n");
120 * check if we need to lay the file out complete again. fio
121 * does that for operations involving reads, or for writes
122 * where overwrite is set
125 (td_write(td) && td->o.overwrite && !td->o.file_append) ||
126 (td_write(td) && td_ioengine_flagged(td, FIO_NOEXTEND)))
128 if (td_write(td) && !td->o.overwrite && !td->o.file_append)
131 if (unlink_file || new_layout) {
134 dprint(FD_FILE, "layout unlink %s\n", f->file_name);
136 ret = td_io_unlink_file(td, f);
137 if (ret != 0 && ret != ENOENT) {
138 td_verror(td, errno, "unlink");
144 if (td->o.allow_create)
153 dprint(FD_FILE, "open file %s, flags %x\n", f->file_name, flags);
154 f->fd = open(f->file_name, flags, 0644);
158 if (err == ENOENT && !td->o.allow_create)
159 log_err("fio: file creation disallowed by "
160 "allow_file_create=0\n");
162 td_verror(td, err, "open");
166 fallocate_file(td, f);
169 * If our jobs don't require regular files initially, we're done.
175 * The size will be -1ULL when fill_device is used, so don't truncate
176 * or fallocate this file, just write it
178 if (!td->o.fill_device) {
179 dprint(FD_FILE, "truncate file %s, size %llu\n", f->file_name,
180 (unsigned long long) f->real_file_size);
181 if (ftruncate(f->fd, f->real_file_size) == -1) {
182 if (errno != EFBIG) {
183 td_verror(td, errno, "ftruncate");
189 left = f->real_file_size;
190 bs = td->o.max_bs[DDIR_WRITE];
196 td_verror(td, errno, "malloc");
200 while (left && !td->terminate) {
206 fill_io_buffer(td, b, bs, bs);
208 r = write(f->fd, b, bs);
218 if (td->o.fill_device)
220 log_info("fio: ENOSPC on laying out "
224 td_verror(td, errno, "write");
226 td_verror(td, EIO, "write");
233 dprint(FD_FILE, "terminate unlink %s\n", f->file_name);
234 td_io_unlink_file(td, f);
235 } else if (td->o.create_fsync) {
236 if (fsync(f->fd) < 0) {
237 td_verror(td, errno, "fsync");
241 if (td->o.fill_device && !td_write(td)) {
242 fio_file_clear_size_known(f);
243 if (td_io_get_file_size(td, f))
245 if (f->io_size > f->real_file_size)
246 f->io_size = f->real_file_size;
260 static bool pre_read_file(struct thread_data *td, struct fio_file *f)
262 int r, did_open = 0, old_runstate;
263 unsigned long long left;
264 unsigned long long bs;
268 if (td_ioengine_flagged(td, FIO_PIPEIO) ||
269 td_ioengine_flagged(td, FIO_NOIO))
272 if (f->filetype == FIO_TYPE_CHAR)
275 if (!fio_file_open(f)) {
276 if (td->io_ops->open_file(td, f)) {
277 log_err("fio: cannot pre-read, failed to open file\n");
283 old_runstate = td_bump_runstate(td, TD_PRE_READING);
286 bs = td->o.max_bs[DDIR_READ];
292 td_verror(td, errno, "malloc");
298 if (lseek(f->fd, f->file_offset, SEEK_SET) < 0) {
299 td_verror(td, errno, "lseek");
300 log_err("fio: failed to lseek pre-read file\n");
305 while (left && !td->terminate) {
309 r = read(f->fd, b, bs);
315 td_verror(td, EIO, "pre_read");
321 td_restore_runstate(td, old_runstate);
324 td->io_ops->close_file(td, f);
330 unsigned long long get_rand_file_size(struct thread_data *td)
332 unsigned long long ret, sized;
336 frand_max = rand_max(&td->file_size_state);
337 r = __rand(&td->file_size_state);
338 sized = td->o.file_size_high - td->o.file_size_low;
339 ret = (unsigned long long) ((double) sized * (r / (frand_max + 1.0)));
340 ret += td->o.file_size_low;
341 ret -= (ret % td->o.rw_min_bs);
345 static int file_size(struct thread_data *td, struct fio_file *f)
349 if (stat(f->file_name, &st) == -1) {
350 td_verror(td, errno, "fstat");
354 f->real_file_size = st.st_size;
358 static int bdev_size(struct thread_data *td, struct fio_file *f)
360 unsigned long long bytes = 0;
363 if (td->io_ops->open_file(td, f)) {
364 log_err("fio: failed opening blockdev %s for size check\n",
369 r = blockdev_size(f, &bytes);
371 td_verror(td, r, "blockdev_size");
376 log_err("%s: zero sized block device?\n", f->file_name);
380 f->real_file_size = bytes;
381 td->io_ops->close_file(td, f);
384 td->io_ops->close_file(td, f);
388 static int char_size(struct thread_data *td, struct fio_file *f)
390 #ifdef FIO_HAVE_CHARDEV_SIZE
391 unsigned long long bytes = 0;
394 if (td->io_ops->open_file(td, f)) {
395 log_err("fio: failed opening chardev %s for size check\n",
400 r = chardev_size(f, &bytes);
402 td_verror(td, r, "chardev_size");
407 log_err("%s: zero sized char device?\n", f->file_name);
411 f->real_file_size = bytes;
412 td->io_ops->close_file(td, f);
415 td->io_ops->close_file(td, f);
418 f->real_file_size = -1ULL;
423 static int get_file_size(struct thread_data *td, struct fio_file *f)
427 if (fio_file_size_known(f))
430 if (f->filetype == FIO_TYPE_FILE)
431 ret = file_size(td, f);
432 else if (f->filetype == FIO_TYPE_BLOCK)
433 ret = bdev_size(td, f);
434 else if (f->filetype == FIO_TYPE_CHAR)
435 ret = char_size(td, f);
437 f->real_file_size = -1;
438 log_info("%s: failed to get file size of %s\n", td->o.name,
440 return 1; /* avoid offset extends end error message */
444 * Leave ->real_file_size with 0 since it could be expectation
445 * of initial setup for regular files.
451 * ->file_offset normally hasn't been initialized yet, so this
452 * is basically always false unless ->real_file_size is -1, but
453 * if ->real_file_size is -1 this message doesn't make sense.
454 * As a result, this message is basically useless.
456 if (f->file_offset > f->real_file_size) {
457 log_err("%s: offset extends end (%llu > %llu)\n", td->o.name,
458 (unsigned long long) f->file_offset,
459 (unsigned long long) f->real_file_size);
463 fio_file_set_size_known(f);
467 static int __file_invalidate_cache(struct thread_data *td, struct fio_file *f,
468 unsigned long long off,
469 unsigned long long len)
471 int errval = 0, ret = 0;
480 off = f->file_offset;
482 if (len == -1ULL || off == -1ULL)
485 if (td->io_ops->invalidate) {
486 dprint(FD_IO, "invalidate %s cache %s\n", td->io_ops->name,
488 ret = td->io_ops->invalidate(td, f);
491 } else if (td_ioengine_flagged(td, FIO_DISKLESSIO)) {
492 dprint(FD_IO, "invalidate not supported by ioengine %s\n",
494 } else if (f->filetype == FIO_TYPE_FILE) {
495 dprint(FD_IO, "declare unneeded cache %s: %llu/%llu\n",
496 f->file_name, off, len);
497 ret = posix_fadvise(f->fd, off, len, POSIX_FADV_DONTNEED);
500 } else if (f->filetype == FIO_TYPE_BLOCK) {
503 dprint(FD_IO, "drop page cache %s\n", f->file_name);
504 ret = blockdev_invalidate_cache(f);
505 while (ret < 0 && errno == EAGAIN && retry_count++ < 25) {
507 * Linux multipath devices reject ioctl while
508 * the maps are being updated. That window can
509 * last tens of milliseconds; we'll try up to
510 * a quarter of a second.
513 ret = blockdev_invalidate_cache(f);
515 if (ret < 0 && errno == EACCES && geteuid()) {
516 if (!fio_did_warn(FIO_WARN_ROOT_FLUSH)) {
517 log_err("fio: only root may flush block "
518 "devices. Cache flush bypassed!\n");
523 } else if (f->filetype == FIO_TYPE_CHAR ||
524 f->filetype == FIO_TYPE_PIPE) {
525 dprint(FD_IO, "invalidate not supported %s\n", f->file_name);
529 * Cache flushing isn't a fatal condition, and we know it will
530 * happen on some platforms where we don't have the proper
531 * function to flush eg block device caches. So just warn and
532 * continue on our way.
535 log_info("fio: cache invalidation of %s failed: %s\n",
536 f->file_name, strerror(errval));
542 int file_invalidate_cache(struct thread_data *td, struct fio_file *f)
544 if (!fio_file_open(f))
547 return __file_invalidate_cache(td, f, -1ULL, -1ULL);
550 int generic_close_file(struct thread_data fio_unused *td, struct fio_file *f)
554 dprint(FD_FILE, "fd close %s\n", f->file_name);
558 if (close(f->fd) < 0)
563 if (f->shadow_fd != -1) {
572 int file_lookup_open(struct fio_file *f, int flags)
574 struct fio_file *__f;
577 __f = lookup_file_hash(f->file_name);
579 dprint(FD_FILE, "found file in hash %s\n", f->file_name);
583 dprint(FD_FILE, "file not found in hash %s\n", f->file_name);
591 f->fd = open(f->file_name, flags, 0600);
595 static int file_close_shadow_fds(struct thread_data *td)
601 for_each_file(td, f, i) {
602 if (f->shadow_fd == -1)
613 int generic_open_file(struct thread_data *td, struct fio_file *f)
619 dprint(FD_FILE, "fd open %s\n", f->file_name);
621 if (!strcmp(f->file_name, "-")) {
623 log_err("fio: can't read/write to stdin/out\n");
629 * move output logging to stderr, if we are writing to stdout
638 flags |= OS_O_DIRECT;
641 td_verror(td, EINVAL, "OS does not support atomic IO");
644 flags |= OS_O_DIRECT | FIO_O_ATOMIC;
648 if (td->o.create_on_open && td->o.allow_create)
651 if (f->filetype != FIO_TYPE_FILE)
652 flags |= FIO_O_NOATIME;
659 if (f->filetype == FIO_TYPE_FILE && td->o.allow_create)
663 f->fd = dup(STDOUT_FILENO);
665 from_hash = file_lookup_open(f, flags);
666 } else if (td_read(td)) {
667 if (f->filetype == FIO_TYPE_CHAR && !read_only)
673 f->fd = dup(STDIN_FILENO);
675 from_hash = file_lookup_open(f, flags);
676 } else if (td_trim(td)) {
677 assert(!td_rw(td)); /* should have matched above */
680 from_hash = file_lookup_open(f, flags);
684 char buf[FIO_VERROR_SIZE];
687 if (__e == EPERM && (flags & FIO_O_NOATIME)) {
688 flags &= ~FIO_O_NOATIME;
691 if (__e == EMFILE && file_close_shadow_fds(td))
694 snprintf(buf, sizeof(buf), "open(%s)", f->file_name);
696 if (__e == EINVAL && (flags & OS_O_DIRECT)) {
697 log_err("fio: looks like your file system does not " \
698 "support direct=1/buffered=0\n");
701 td_verror(td, __e, buf);
705 if (!from_hash && f->fd != -1) {
706 if (add_file_hash(f)) {
710 * Stash away descriptor for later close. This is to
711 * work-around a "feature" on Linux, where a close of
712 * an fd that has been opened for write will trigger
713 * udev to call blkid to check partitions, fs id, etc.
714 * That pollutes the device cache, which can slow down
715 * unbuffered accesses.
717 if (f->shadow_fd == -1)
718 f->shadow_fd = f->fd;
721 * OK to ignore, we haven't done anything
724 ret = generic_close_file(td, f);
734 * This function i.e. get_file_size() is the default .get_file_size
735 * implementation of majority of I/O engines.
737 int generic_get_file_size(struct thread_data *td, struct fio_file *f)
739 return get_file_size(td, f);
743 * open/close all files, so that ->real_file_size gets set
745 static int get_file_sizes(struct thread_data *td)
751 for_each_file(td, f, i) {
752 dprint(FD_FILE, "get file size for %p/%d/%s\n", f, i,
755 if (td_io_get_file_size(td, f)) {
756 if (td->error != ENOENT) {
757 log_err("%s\n", td->verror);
765 * There are corner cases where we end up with -1 for
766 * ->real_file_size due to unsupported file type, etc.
767 * We then just set to size option value divided by number
768 * of files, similar to the way file ->io_size is set.
769 * stat(2) failure doesn't set ->real_file_size to -1.
771 if (f->real_file_size == -1ULL && td->o.size)
772 f->real_file_size = td->o.size / td->o.nr_files;
779 struct flist_head list;
786 * Get free number of bytes for each file on each unique mount.
788 static unsigned long long get_fs_free_counts(struct thread_data *td)
790 struct flist_head *n, *tmp;
791 unsigned long long ret = 0;
792 struct fio_mount *fm;
797 for_each_file(td, f, i) {
801 if (f->filetype == FIO_TYPE_BLOCK || f->filetype == FIO_TYPE_CHAR) {
802 if (f->real_file_size != -1ULL)
803 ret += f->real_file_size;
805 } else if (f->filetype != FIO_TYPE_FILE)
809 strncpy(buf, f->file_name, 255);
811 if (stat(buf, &sb) < 0) {
815 if (stat(buf, &sb) < 0)
820 flist_for_each(n, &list) {
821 fm = flist_entry(n, struct fio_mount, list);
822 if (fm->key == sb.st_dev)
831 fm = calloc(1, sizeof(*fm));
832 strncpy(fm->__base, buf, sizeof(fm->__base) - 1);
833 fm->base = basename(fm->__base);
835 flist_add(&fm->list, &list);
838 flist_for_each_safe(n, tmp, &list) {
839 unsigned long long sz;
841 fm = flist_entry(n, struct fio_mount, list);
842 flist_del(&fm->list);
844 sz = get_fs_free_size(fm->base);
845 if (sz && sz != -1ULL)
854 uint64_t get_start_offset(struct thread_data *td, struct fio_file *f)
856 struct thread_options *o = &td->o;
857 unsigned long long align_bs;
858 unsigned long long offset;
860 if (o->file_append && f->filetype == FIO_TYPE_FILE)
861 return f->real_file_size;
863 if (o->start_offset_percent > 0) {
865 * if offset_align is provided, set initial offset
867 if (fio_option_is_set(o, start_offset_align)) {
868 align_bs = o->start_offset_align;
870 /* else take the minimum block size */
871 align_bs = td_min_bs(td);
874 /* calculate the raw offset */
875 offset = (f->real_file_size * o->start_offset_percent / 100) +
876 (td->subjob_number * o->offset_increment);
879 * block align the offset at the next available boundary at
880 * ceiling(offset / align_bs) * align_bs
882 offset = (offset / align_bs + (offset % align_bs != 0)) * align_bs;
885 /* start_offset_percent not set */
886 offset = o->start_offset +
887 td->subjob_number * o->offset_increment;
894 * Open the files and setup files sizes, creating files if necessary.
896 int setup_files(struct thread_data *td)
898 unsigned long long total_size, extend_size;
899 struct thread_options *o = &td->o;
901 unsigned int i, nr_fs_extra = 0;
902 int err = 0, need_extend;
904 const unsigned long long bs = td_min_bs(td);
907 dprint(FD_FILE, "setup files\n");
909 old_state = td_bump_runstate(td, TD_SETTING_UP);
911 if (o->read_iolog_file)
915 * Find out physical size of files or devices for this thread,
916 * before we determine I/O size and range of our targets.
917 * If ioengine defines a setup() method, it's responsible for
918 * opening the files and setting f->real_file_size to indicate
919 * the valid range for that file.
921 if (td->io_ops->setup)
922 err = td->io_ops->setup(td);
924 err = get_file_sizes(td);
930 * check sizes. if the files/devices do not exist and the size
931 * isn't passed to fio, abort.
934 for_each_file(td, f, i) {
936 if (f->real_file_size == -1ULL)
939 total_size += f->real_file_size;
943 td->fill_device_size = get_fs_free_counts(td);
946 * device/file sizes are zero and no size given, punt
948 if ((!total_size || total_size == -1ULL) && !o->size &&
949 !td_ioengine_flagged(td, FIO_NOIO) && !o->fill_device &&
950 !(o->nr_files && (o->file_size_low || o->file_size_high))) {
951 log_err("%s: you need to specify size=\n", o->name);
952 td_verror(td, EINVAL, "total_file_size");
957 * Calculate per-file size and potential extra size for the
958 * first files, if needed (i.e. if we don't have a fixed size).
960 if (!o->file_size_low && o->nr_files) {
963 fs = o->size / o->nr_files;
964 all_fs = fs * o->nr_files;
966 if (all_fs < o->size)
967 nr_fs_extra = (o->size - all_fs) / bs;
971 * now file sizes are known, so we can set ->io_size. if size= is
972 * not given, ->io_size is just equal to ->real_file_size. if size
973 * is given, ->io_size is size / nr_files.
975 extend_size = total_size = 0;
977 for_each_file(td, f, i) {
978 f->file_offset = get_start_offset(td, f);
981 * Update ->io_size depending on options specified.
982 * ->file_size_low being 0 means filesize option isn't set.
983 * Non zero ->file_size_low equals ->file_size_high means
984 * filesize option is set in a fixed size format.
985 * Non zero ->file_size_low not equals ->file_size_high means
986 * filesize option is set in a range format.
988 if (!o->file_size_low) {
990 * no file size or range given, file size is equal to
991 * total size divided by number of files. If the size
992 * doesn't divide nicely with the min blocksize,
993 * make the first files bigger.
1002 * We normally don't come here for regular files, but
1003 * if the result is 0 for a regular file, set it to the
1004 * real file size. This could be size of the existing
1005 * one if it already exists, but otherwise will be set
1006 * to 0. A new file won't be created because
1007 * ->io_size + ->file_offset equals ->real_file_size.
1010 if (f->file_offset > f->real_file_size)
1012 f->io_size = f->real_file_size - f->file_offset;
1014 log_info("fio: file %s may be ignored\n",
1017 } else if (f->real_file_size < o->file_size_low ||
1018 f->real_file_size > o->file_size_high) {
1019 if (f->file_offset > o->file_size_low)
1022 * file size given. if it's fixed, use that. if it's a
1023 * range, generate a random size in-between.
1025 if (o->file_size_low == o->file_size_high)
1026 f->io_size = o->file_size_low - f->file_offset;
1028 f->io_size = get_rand_file_size(td)
1032 f->io_size = f->real_file_size - f->file_offset;
1034 if (f->io_size == -1ULL)
1037 if (o->size_percent && o->size_percent != 100) {
1040 file_size = f->io_size + f->file_offset;
1041 f->io_size = (file_size *
1042 o->size_percent) / 100;
1043 if (f->io_size > (file_size - f->file_offset))
1044 f->io_size = file_size - f->file_offset;
1046 f->io_size -= (f->io_size % td_min_bs(td));
1048 total_size += f->io_size;
1051 if (f->filetype == FIO_TYPE_FILE &&
1052 (f->io_size + f->file_offset) > f->real_file_size &&
1053 !td_ioengine_flagged(td, FIO_DISKLESSIO)) {
1054 if (!o->create_on_open) {
1056 extend_size += (f->io_size + f->file_offset);
1057 fio_file_set_extend(f);
1059 f->real_file_size = f->io_size + f->file_offset;
1063 if (td->o.block_error_hist) {
1066 assert(td->o.nr_files == 1); /* checked in fixup_options */
1068 len = f->io_size / td->o.bs[DDIR_TRIM];
1069 if (len > MAX_NR_BLOCK_INFOS || len <= 0) {
1070 log_err("fio: cannot calculate block histogram with "
1071 "%d trim blocks, maximum %d\n",
1072 len, MAX_NR_BLOCK_INFOS);
1073 td_verror(td, EINVAL, "block_error_hist");
1077 td->ts.nr_block_infos = len;
1078 for (i = 0; i < len; i++)
1079 td->ts.block_infos[i] =
1080 BLOCK_INFO(0, BLOCK_STATE_UNINIT);
1082 td->ts.nr_block_infos = 0;
1084 if (!o->size || (total_size && o->size > total_size))
1085 o->size = total_size;
1087 if (o->size < td_min_bs(td)) {
1088 log_err("fio: blocksize too large for data set\n");
1093 * See if we need to extend some files, typically needed when our
1094 * target regular files don't exist yet, but our jobs require them
1095 * initially due to read I/Os.
1099 if (output_format & FIO_OUTPUT_NORMAL) {
1100 log_info("%s: Laying out IO file%s (%u file%s / %s%lluMiB)\n",
1102 need_extend > 1 ? "s" : "",
1104 need_extend > 1 ? "s" : "",
1105 need_extend > 1 ? "total " : "",
1109 for_each_file(td, f, i) {
1110 unsigned long long old_len = -1ULL, extend_len = -1ULL;
1112 if (!fio_file_extend(f))
1115 assert(f->filetype == FIO_TYPE_FILE);
1116 fio_file_clear_extend(f);
1117 if (!o->fill_device) {
1118 old_len = f->real_file_size;
1119 extend_len = f->io_size + f->file_offset -
1122 f->real_file_size = (f->io_size + f->file_offset);
1123 err = extend_file(td, f);
1127 err = __file_invalidate_cache(td, f, old_len,
1131 * Shut up static checker
1147 * iolog already set the total io size, if we read back
1150 if (!o->read_iolog_file) {
1152 td->total_io_size = o->io_size * o->loops;
1154 td->total_io_size = o->size * o->loops;
1161 td_restore_runstate(td, old_state);
1163 if (td->o.zone_mode == ZONE_MODE_ZBD) {
1171 log_err("%s: you need to specify valid offset=\n", o->name);
1173 td_restore_runstate(td, old_state);
1177 bool pre_read_files(struct thread_data *td)
1182 dprint(FD_FILE, "pre_read files\n");
1184 for_each_file(td, f, i) {
1185 if (!pre_read_file(td, f))
1192 static void __init_rand_distribution(struct thread_data *td, struct fio_file *f)
1194 unsigned int range_size, seed;
1195 unsigned long nranges;
1198 range_size = min(td->o.min_bs[DDIR_READ], td->o.min_bs[DDIR_WRITE]);
1199 fsize = min(f->real_file_size, f->io_size);
1201 nranges = (fsize + range_size - 1) / range_size;
1203 seed = jhash(f->file_name, strlen(f->file_name), 0) * td->thread_number;
1204 if (!td->o.rand_repeatable)
1205 seed = td->rand_seeds[4];
1207 if (td->o.random_distribution == FIO_RAND_DIST_ZIPF)
1208 zipf_init(&f->zipf, nranges, td->o.zipf_theta.u.f, seed);
1209 else if (td->o.random_distribution == FIO_RAND_DIST_PARETO)
1210 pareto_init(&f->zipf, nranges, td->o.pareto_h.u.f, seed);
1211 else if (td->o.random_distribution == FIO_RAND_DIST_GAUSS)
1212 gauss_init(&f->gauss, nranges, td->o.gauss_dev.u.f, seed);
1215 static bool init_rand_distribution(struct thread_data *td)
1221 if (td->o.random_distribution == FIO_RAND_DIST_RANDOM)
1224 state = td_bump_runstate(td, TD_SETTING_UP);
1226 for_each_file(td, f, i)
1227 __init_rand_distribution(td, f);
1229 td_restore_runstate(td, state);
1234 * Check if the number of blocks exceeds the randomness capability of
1235 * the selected generator. Tausworthe is 32-bit, the others are fullly
1238 static int check_rand_gen_limits(struct thread_data *td, struct fio_file *f,
1241 if (blocks <= FRAND32_MAX)
1243 if (td->o.random_generator != FIO_RAND_GEN_TAUSWORTHE)
1247 * If the user hasn't specified a random generator, switch
1248 * to tausworthe64 with informational warning. If the user did
1249 * specify one, just warn.
1251 log_info("fio: file %s exceeds 32-bit tausworthe random generator.\n",
1254 if (!fio_option_is_set(&td->o, random_generator)) {
1255 log_info("fio: Switching to tausworthe64. Use the "
1256 "random_generator= option to get rid of this "
1258 td->o.random_generator = FIO_RAND_GEN_TAUSWORTHE64;
1263 * Just make this information to avoid breaking scripts.
1265 log_info("fio: Use the random_generator= option to switch to lfsr or "
1270 bool init_random_map(struct thread_data *td)
1272 unsigned long long blocks;
1276 if (init_rand_distribution(td))
1281 for_each_file(td, f, i) {
1282 uint64_t fsize = min(f->real_file_size, f->io_size);
1284 blocks = fsize / (unsigned long long) td->o.rw_min_bs;
1286 if (check_rand_gen_limits(td, f, blocks))
1289 if (td->o.random_generator == FIO_RAND_GEN_LFSR) {
1292 seed = td->rand_seeds[FIO_RAND_BLOCK_OFF];
1294 if (!lfsr_init(&f->lfsr, blocks, seed, 0)) {
1295 fio_file_set_lfsr(f);
1298 } else if (!td->o.norandommap) {
1299 f->io_axmap = axmap_new(blocks);
1301 fio_file_set_axmap(f);
1304 } else if (td->o.norandommap)
1307 if (!td->o.softrandommap) {
1308 log_err("fio: failed allocating random map. If running"
1309 " a large number of jobs, try the 'norandommap'"
1310 " option or set 'softrandommap'. Or give"
1311 " a larger --alloc-size to fio.\n");
1315 log_info("fio: file %s failed allocating random map. Running "
1316 "job without.\n", f->file_name);
1322 void close_files(struct thread_data *td)
1327 for_each_file(td, f, i) {
1328 if (fio_file_open(f))
1329 td_io_close_file(td, f);
1333 void close_and_free_files(struct thread_data *td)
1337 bool use_free = td_ioengine_flagged(td, FIO_NOFILEHASH);
1339 dprint(FD_FILE, "close files\n");
1341 for_each_file(td, f, i) {
1342 if (td->o.unlink && f->filetype == FIO_TYPE_FILE) {
1343 dprint(FD_FILE, "free unlink %s\n", f->file_name);
1344 td_io_unlink_file(td, f);
1347 if (fio_file_open(f))
1348 td_io_close_file(td, f);
1350 remove_file_hash(f);
1352 if (td->o.unlink && f->filetype == FIO_TYPE_FILE) {
1353 dprint(FD_FILE, "free unlink %s\n", f->file_name);
1354 td_io_unlink_file(td, f);
1357 zbd_free_zone_info(f);
1362 sfree(f->file_name);
1363 f->file_name = NULL;
1364 if (fio_file_axmap(f)) {
1365 axmap_free(f->io_axmap);
1374 td->o.filename = NULL;
1376 free(td->file_locks);
1377 td->files_index = 0;
1379 td->file_locks = NULL;
1380 td->o.file_lock_mode = FILE_LOCK_NONE;
1384 static void get_file_type(struct fio_file *f)
1388 if (!strcmp(f->file_name, "-"))
1389 f->filetype = FIO_TYPE_PIPE;
1391 f->filetype = FIO_TYPE_FILE;
1394 /* \\.\ is the device namespace in Windows, where every file is
1396 if (strncmp(f->file_name, "\\\\.\\", 4) == 0)
1397 f->filetype = FIO_TYPE_BLOCK;
1400 if (!stat(f->file_name, &sb)) {
1401 if (S_ISBLK(sb.st_mode))
1402 f->filetype = FIO_TYPE_BLOCK;
1403 else if (S_ISCHR(sb.st_mode))
1404 f->filetype = FIO_TYPE_CHAR;
1405 else if (S_ISFIFO(sb.st_mode))
1406 f->filetype = FIO_TYPE_PIPE;
1410 static bool __is_already_allocated(const char *fname, bool set)
1412 struct flist_head *entry;
1415 ret = file_bloom_exists(fname, set);
1419 flist_for_each(entry, &filename_list) {
1420 struct file_name *fn;
1422 fn = flist_entry(entry, struct file_name, list);
1424 if (!strcmp(fn->filename, fname))
1431 static bool is_already_allocated(const char *fname)
1435 fio_file_hash_lock();
1436 ret = __is_already_allocated(fname, false);
1437 fio_file_hash_unlock();
1442 static void set_already_allocated(const char *fname)
1444 struct file_name *fn;
1446 fn = malloc(sizeof(struct file_name));
1447 fn->filename = strdup(fname);
1449 fio_file_hash_lock();
1450 if (!__is_already_allocated(fname, true)) {
1451 flist_add_tail(&fn->list, &filename_list);
1454 fio_file_hash_unlock();
1462 static void free_already_allocated(void)
1464 struct flist_head *entry, *tmp;
1465 struct file_name *fn;
1467 if (flist_empty(&filename_list))
1470 fio_file_hash_lock();
1471 flist_for_each_safe(entry, tmp, &filename_list) {
1472 fn = flist_entry(entry, struct file_name, list);
1474 flist_del(&fn->list);
1478 fio_file_hash_unlock();
1481 static struct fio_file *alloc_new_file(struct thread_data *td)
1485 if (td_ioengine_flagged(td, FIO_NOFILEHASH))
1486 f = calloc(1, sizeof(*f));
1488 f = scalloc(1, sizeof(*f));
1496 fio_file_reset(td, f);
1500 bool exists_and_not_regfile(const char *filename)
1504 if (lstat(filename, &sb) == -1)
1507 #ifndef WIN32 /* NOT Windows */
1508 if (S_ISREG(sb.st_mode))
1511 /* \\.\ is the device namespace in Windows, where every file
1512 * is a device node */
1513 if (S_ISREG(sb.st_mode) && strncmp(filename, "\\\\.\\", 4) != 0)
1520 static bool create_work_dirs(struct thread_data *td, const char *fname)
1522 char path[PATH_MAX];
1525 if (td->o.directory) {
1526 snprintf(path, PATH_MAX, "%s%c%s", td->o.directory,
1527 FIO_OS_PATH_SEPARATOR, fname);
1528 start = strstr(path, fname);
1530 snprintf(path, PATH_MAX, "%s", fname);
1535 while ((end = strchr(end, FIO_OS_PATH_SEPARATOR)) != NULL) {
1540 #ifdef CONFIG_HAVE_MKDIR_TWO
1541 if (mkdir(path, 0600) && errno != EEXIST) {
1543 if (mkdir(path) && errno != EEXIST) {
1545 log_err("fio: failed to create dir (%s): %d\n",
1549 *end = FIO_OS_PATH_SEPARATOR;
1552 td->flags |= TD_F_DIRS_CREATED;
1556 int add_file(struct thread_data *td, const char *fname, int numjob, int inc)
1558 int cur_files = td->files_index;
1559 char file_name[PATH_MAX];
1563 dprint(FD_FILE, "add file %s\n", fname);
1565 if (td->o.directory)
1566 len = set_name_idx(file_name, PATH_MAX, td->o.directory, numjob,
1567 td->o.unique_filename);
1569 sprintf(file_name + len, "%s", fname);
1571 if (strchr(fname, FIO_OS_PATH_SEPARATOR) &&
1572 !(td->flags & TD_F_DIRS_CREATED) &&
1573 !create_work_dirs(td, fname))
1576 /* clean cloned siblings using existing files */
1577 if (numjob && is_already_allocated(file_name) &&
1578 !exists_and_not_regfile(fname))
1581 f = alloc_new_file(td);
1583 if (td->files_size <= td->files_index) {
1584 unsigned int new_size = td->o.nr_files + 1;
1586 dprint(FD_FILE, "resize file array to %d files\n", new_size);
1588 td->files = realloc(td->files, new_size * sizeof(f));
1589 if (td->files == NULL) {
1590 log_err("fio: realloc OOM\n");
1593 if (td->o.file_lock_mode != FILE_LOCK_NONE) {
1594 td->file_locks = realloc(td->file_locks, new_size);
1595 if (!td->file_locks) {
1596 log_err("fio: realloc OOM\n");
1599 td->file_locks[cur_files] = FILE_LOCK_NONE;
1601 td->files_size = new_size;
1603 td->files[cur_files] = f;
1604 f->fileno = cur_files;
1607 * init function, io engine may not be loaded yet
1609 if (td->io_ops && td_ioengine_flagged(td, FIO_DISKLESSIO))
1610 f->real_file_size = -1ULL;
1612 if (td_ioengine_flagged(td, FIO_NOFILEHASH))
1613 f->file_name = strdup(file_name);
1615 f->file_name = smalloc_strdup(file_name);
1617 /* can't handle smalloc failure from here */
1618 assert(f->file_name);
1622 switch (td->o.file_lock_mode) {
1623 case FILE_LOCK_NONE:
1625 case FILE_LOCK_READWRITE:
1626 f->rwlock = fio_rwlock_init();
1628 case FILE_LOCK_EXCLUSIVE:
1629 f->lock = fio_sem_init(FIO_SEM_UNLOCKED);
1632 log_err("fio: unknown lock mode: %d\n", td->o.file_lock_mode);
1638 if (td->o.numjobs > 1)
1639 set_already_allocated(file_name);
1644 dprint(FD_FILE, "file %p \"%s\" added at %d\n", f, f->file_name,
1650 int add_file_exclusive(struct thread_data *td, const char *fname)
1655 for_each_file(td, f, i) {
1656 if (!strcmp(f->file_name, fname))
1660 return add_file(td, fname, 0, 1);
1663 void get_file(struct fio_file *f)
1665 dprint(FD_FILE, "get file %s, ref=%d\n", f->file_name, f->references);
1666 assert(fio_file_open(f));
1670 int put_file(struct thread_data *td, struct fio_file *f)
1672 int f_ret = 0, ret = 0;
1674 dprint(FD_FILE, "put file %s, ref=%d\n", f->file_name, f->references);
1676 if (!fio_file_open(f)) {
1677 assert(f->fd == -1);
1681 assert(f->references);
1682 if (--f->references)
1685 disk_util_dec(f->du);
1687 if (td->o.file_lock_mode != FILE_LOCK_NONE)
1688 unlock_file_all(td, f);
1690 if (should_fsync(td) && td->o.fsync_on_close) {
1691 f_ret = fsync(f->fd);
1696 if (td->io_ops->close_file)
1697 ret = td->io_ops->close_file(td, f);
1702 td->nr_open_files--;
1703 fio_file_clear_closing(f);
1704 fio_file_clear_open(f);
1705 assert(f->fd == -1);
1709 void lock_file(struct thread_data *td, struct fio_file *f, enum fio_ddir ddir)
1711 if (!f->lock || td->o.file_lock_mode == FILE_LOCK_NONE)
1714 if (td->o.file_lock_mode == FILE_LOCK_READWRITE) {
1715 if (ddir == DDIR_READ)
1716 fio_rwlock_read(f->rwlock);
1718 fio_rwlock_write(f->rwlock);
1719 } else if (td->o.file_lock_mode == FILE_LOCK_EXCLUSIVE)
1720 fio_sem_down(f->lock);
1722 td->file_locks[f->fileno] = td->o.file_lock_mode;
1725 void unlock_file(struct thread_data *td, struct fio_file *f)
1727 if (!f->lock || td->o.file_lock_mode == FILE_LOCK_NONE)
1730 if (td->o.file_lock_mode == FILE_LOCK_READWRITE)
1731 fio_rwlock_unlock(f->rwlock);
1732 else if (td->o.file_lock_mode == FILE_LOCK_EXCLUSIVE)
1733 fio_sem_up(f->lock);
1735 td->file_locks[f->fileno] = FILE_LOCK_NONE;
1738 void unlock_file_all(struct thread_data *td, struct fio_file *f)
1740 if (td->o.file_lock_mode == FILE_LOCK_NONE || !td->file_locks)
1742 if (td->file_locks[f->fileno] != FILE_LOCK_NONE)
1746 static bool recurse_dir(struct thread_data *td, const char *dirname)
1752 D = opendir(dirname);
1754 char buf[FIO_VERROR_SIZE];
1756 snprintf(buf, FIO_VERROR_SIZE, "opendir(%s)", dirname);
1757 td_verror(td, errno, buf);
1761 while ((dir = readdir(D)) != NULL) {
1762 char full_path[PATH_MAX];
1765 if (!strcmp(dir->d_name, ".") || !strcmp(dir->d_name, ".."))
1768 sprintf(full_path, "%s%c%s", dirname, FIO_OS_PATH_SEPARATOR, dir->d_name);
1770 if (lstat(full_path, &sb) == -1) {
1771 if (errno != ENOENT) {
1772 td_verror(td, errno, "stat");
1778 if (S_ISREG(sb.st_mode)) {
1779 add_file(td, full_path, 0, 1);
1782 if (!S_ISDIR(sb.st_mode))
1785 ret = recurse_dir(td, full_path);
1794 int add_dir_files(struct thread_data *td, const char *path)
1796 int ret = recurse_dir(td, path);
1799 log_info("fio: opendir added %d files\n", td->o.nr_files);
1804 void dup_files(struct thread_data *td, struct thread_data *org)
1809 dprint(FD_FILE, "dup files: %d\n", org->files_index);
1814 td->files = malloc(org->files_index * sizeof(f));
1816 if (td->o.file_lock_mode != FILE_LOCK_NONE)
1817 td->file_locks = malloc(org->files_index);
1819 for_each_file(org, f, i) {
1820 struct fio_file *__f;
1822 __f = alloc_new_file(td);
1825 if (td_ioengine_flagged(td, FIO_NOFILEHASH))
1826 __f->file_name = strdup(f->file_name);
1828 __f->file_name = smalloc_strdup(f->file_name);
1830 /* can't handle smalloc failure from here */
1831 assert(__f->file_name);
1832 __f->filetype = f->filetype;
1835 if (td->o.file_lock_mode == FILE_LOCK_EXCLUSIVE)
1836 __f->lock = f->lock;
1837 else if (td->o.file_lock_mode == FILE_LOCK_READWRITE)
1838 __f->rwlock = f->rwlock;
1845 * Returns the index that matches the filename, or -1 if not there
1847 int get_fileno(struct thread_data *td, const char *fname)
1852 for_each_file(td, f, i)
1853 if (!strcmp(f->file_name, fname))
1860 * For log usage, where we add/open/close files automatically
1862 void free_release_files(struct thread_data *td)
1866 td->o.open_files = 0;
1867 td->files_index = 0;
1870 void fio_file_reset(struct thread_data *td, struct fio_file *f)
1874 for (i = 0; i < DDIR_RWDIR_CNT; i++) {
1875 f->last_pos[i] = f->file_offset;
1876 f->last_start[i] = -1ULL;
1879 if (fio_file_axmap(f))
1880 axmap_reset(f->io_axmap);
1881 else if (fio_file_lfsr(f))
1882 lfsr_reset(&f->lfsr, td->rand_seeds[FIO_RAND_BLOCK_OFF]);
1884 zbd_file_reset(td, f);
1887 bool fio_files_done(struct thread_data *td)
1892 for_each_file(td, f, i)
1893 if (!fio_file_done(f))
1899 /* free memory used in initialization phase only */
1900 void filesetup_mem_free(void)
1902 free_already_allocated();
1906 * This function is for platforms which support direct I/O but not O_DIRECT.
1908 int fio_set_directio(struct thread_data *td, struct fio_file *f)
1910 #ifdef FIO_OS_DIRECTIO
1911 int ret = fio_set_odirect(f);
1914 td_verror(td, ret, "fio_set_directio");
1915 #if defined(__sun__)
1916 if (ret == ENOTTY) { /* ENOTTY suggests RAW device or ZFS */
1917 log_err("fio: doing directIO to RAW devices or ZFS not supported\n");
1919 log_err("fio: the file system does not seem to support direct IO\n");
1922 log_err("fio: the file system does not seem to support direct IO\n");
1929 log_err("fio: direct IO is not supported on this host operating system\n");