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);
230 if (td->o.fill_device)
232 log_info("fio: ENOSPC on laying out "
236 td_verror(td, errno, "write");
238 td_verror(td, EIO, "write");
245 dprint(FD_FILE, "terminate unlink %s\n", f->file_name);
246 td_io_unlink_file(td, f);
247 } else if (td->o.create_fsync) {
248 if (fsync(f->fd) < 0) {
249 td_verror(td, errno, "fsync");
253 if (td->o.fill_device && !td_write(td)) {
254 fio_file_clear_size_known(f);
255 if (td_io_get_file_size(td, f))
257 if (f->io_size > f->real_file_size)
258 f->io_size = f->real_file_size;
272 static bool pre_read_file(struct thread_data *td, struct fio_file *f)
274 int r, did_open = 0, old_runstate;
275 unsigned long long left;
276 unsigned long long bs;
280 if (td_ioengine_flagged(td, FIO_PIPEIO) ||
281 td_ioengine_flagged(td, FIO_NOIO))
284 if (f->filetype == FIO_TYPE_CHAR)
287 if (!fio_file_open(f)) {
288 if (td->io_ops->open_file(td, f)) {
289 log_err("fio: cannot pre-read, failed to open file\n");
295 old_runstate = td_bump_runstate(td, TD_PRE_READING);
298 bs = td->o.max_bs[DDIR_READ];
304 td_verror(td, errno, "malloc");
310 if (lseek(f->fd, f->file_offset, SEEK_SET) < 0) {
311 td_verror(td, errno, "lseek");
312 log_err("fio: failed to lseek pre-read file\n");
317 while (left && !td->terminate) {
321 r = read(f->fd, b, bs);
327 td_verror(td, EIO, "pre_read");
333 td_restore_runstate(td, old_runstate);
336 td->io_ops->close_file(td, f);
342 unsigned long long get_rand_file_size(struct thread_data *td)
344 unsigned long long ret, sized;
348 frand_max = rand_max(&td->file_size_state);
349 r = __rand(&td->file_size_state);
350 sized = td->o.file_size_high - td->o.file_size_low;
351 ret = (unsigned long long) ((double) sized * (r / (frand_max + 1.0)));
352 ret += td->o.file_size_low;
353 ret -= (ret % td->o.rw_min_bs);
357 static int file_size(struct thread_data *td, struct fio_file *f)
361 if (stat(f->file_name, &st) == -1) {
362 td_verror(td, errno, "fstat");
366 f->real_file_size = st.st_size;
370 static int bdev_size(struct thread_data *td, struct fio_file *f)
372 unsigned long long bytes = 0;
375 if (td->io_ops->open_file(td, f)) {
376 log_err("fio: failed opening blockdev %s for size check\n",
381 r = blockdev_size(f, &bytes);
383 td_verror(td, r, "blockdev_size");
388 log_err("%s: zero sized block device?\n", f->file_name);
392 f->real_file_size = bytes;
393 td->io_ops->close_file(td, f);
396 td->io_ops->close_file(td, f);
400 static int char_size(struct thread_data *td, struct fio_file *f)
402 #ifdef FIO_HAVE_CHARDEV_SIZE
403 unsigned long long bytes = 0;
406 if (td->io_ops->open_file(td, f)) {
407 log_err("fio: failed opening chardev %s for size check\n",
412 r = chardev_size(f, &bytes);
414 td_verror(td, r, "chardev_size");
419 log_err("%s: zero sized char device?\n", f->file_name);
423 f->real_file_size = bytes;
424 td->io_ops->close_file(td, f);
427 td->io_ops->close_file(td, f);
430 f->real_file_size = -1ULL;
435 static int get_file_size(struct thread_data *td, struct fio_file *f)
439 if (fio_file_size_known(f))
442 if (f->filetype == FIO_TYPE_FILE)
443 ret = file_size(td, f);
444 else if (f->filetype == FIO_TYPE_BLOCK)
445 ret = bdev_size(td, f);
446 else if (f->filetype == FIO_TYPE_CHAR)
447 ret = char_size(td, f);
449 f->real_file_size = -1;
450 log_info("%s: failed to get file size of %s\n", td->o.name,
452 return 1; /* avoid offset extends end error message */
456 * Leave ->real_file_size with 0 since it could be expectation
457 * of initial setup for regular files.
463 * ->file_offset normally hasn't been initialized yet, so this
464 * is basically always false unless ->real_file_size is -1, but
465 * if ->real_file_size is -1 this message doesn't make sense.
466 * As a result, this message is basically useless.
468 if (f->file_offset > f->real_file_size) {
469 log_err("%s: offset extends end (%llu > %llu)\n", td->o.name,
470 (unsigned long long) f->file_offset,
471 (unsigned long long) f->real_file_size);
475 fio_file_set_size_known(f);
479 static int __file_invalidate_cache(struct thread_data *td, struct fio_file *f,
480 unsigned long long off,
481 unsigned long long len)
483 int errval = 0, ret = 0;
492 off = f->file_offset;
494 if (len == -1ULL || off == -1ULL)
497 if (td->io_ops->invalidate) {
498 dprint(FD_IO, "invalidate %s cache %s\n", td->io_ops->name,
500 ret = td->io_ops->invalidate(td, f);
503 } else if (td_ioengine_flagged(td, FIO_DISKLESSIO)) {
504 dprint(FD_IO, "invalidate not supported by ioengine %s\n",
506 } else if (f->filetype == FIO_TYPE_FILE) {
507 dprint(FD_IO, "declare unneeded cache %s: %llu/%llu\n",
508 f->file_name, off, len);
509 ret = posix_fadvise(f->fd, off, len, POSIX_FADV_DONTNEED);
512 } else if (f->filetype == FIO_TYPE_BLOCK) {
515 dprint(FD_IO, "drop page cache %s\n", f->file_name);
516 ret = blockdev_invalidate_cache(f);
517 while (ret < 0 && errno == EAGAIN && retry_count++ < 25) {
519 * Linux multipath devices reject ioctl while
520 * the maps are being updated. That window can
521 * last tens of milliseconds; we'll try up to
522 * a quarter of a second.
525 ret = blockdev_invalidate_cache(f);
527 if (ret < 0 && errno == EACCES && geteuid()) {
528 if (!fio_did_warn(FIO_WARN_ROOT_FLUSH)) {
529 log_err("fio: only root may flush block "
530 "devices. Cache flush bypassed!\n");
535 } else if (f->filetype == FIO_TYPE_CHAR ||
536 f->filetype == FIO_TYPE_PIPE) {
537 dprint(FD_IO, "invalidate not supported %s\n", f->file_name);
541 * Cache flushing isn't a fatal condition, and we know it will
542 * happen on some platforms where we don't have the proper
543 * function to flush eg block device caches. So just warn and
544 * continue on our way.
547 log_info("fio: cache invalidation of %s failed: %s\n",
548 f->file_name, strerror(errval));
554 int file_invalidate_cache(struct thread_data *td, struct fio_file *f)
556 if (!fio_file_open(f))
559 return __file_invalidate_cache(td, f, -1ULL, -1ULL);
562 int generic_close_file(struct thread_data fio_unused *td, struct fio_file *f)
566 dprint(FD_FILE, "fd close %s\n", f->file_name);
570 if (close(f->fd) < 0)
575 if (f->shadow_fd != -1) {
584 int file_lookup_open(struct fio_file *f, int flags)
586 struct fio_file *__f;
589 __f = lookup_file_hash(f->file_name);
591 dprint(FD_FILE, "found file in hash %s\n", f->file_name);
595 dprint(FD_FILE, "file not found in hash %s\n", f->file_name);
603 f->fd = open(f->file_name, flags, 0600);
607 static int file_close_shadow_fds(struct thread_data *td)
613 for_each_file(td, f, i) {
614 if (f->shadow_fd == -1)
625 int generic_open_file(struct thread_data *td, struct fio_file *f)
631 dprint(FD_FILE, "fd open %s\n", f->file_name);
633 if (!strcmp(f->file_name, "-")) {
635 log_err("fio: can't read/write to stdin/out\n");
641 * move output logging to stderr, if we are writing to stdout
650 flags |= OS_O_DIRECT;
653 td_verror(td, EINVAL, "OS does not support atomic IO");
656 flags |= OS_O_DIRECT | FIO_O_ATOMIC;
658 flags |= td->o.sync_io;
659 if (td->o.create_on_open && td->o.allow_create)
662 if (f->filetype != FIO_TYPE_FILE)
663 flags |= FIO_O_NOATIME;
670 if (f->filetype == FIO_TYPE_FILE && td->o.allow_create)
674 f->fd = dup(STDOUT_FILENO);
676 from_hash = file_lookup_open(f, flags);
677 } else if (td_read(td)) {
678 if (f->filetype == FIO_TYPE_CHAR && !read_only)
684 f->fd = dup(STDIN_FILENO);
686 from_hash = file_lookup_open(f, flags);
687 } else if (td_trim(td)) {
688 assert(!td_rw(td)); /* should have matched above */
691 from_hash = file_lookup_open(f, flags);
695 char buf[FIO_VERROR_SIZE];
698 if (__e == EPERM && (flags & FIO_O_NOATIME)) {
699 flags &= ~FIO_O_NOATIME;
702 if (__e == EMFILE && file_close_shadow_fds(td))
705 snprintf(buf, sizeof(buf), "open(%s)", f->file_name);
707 if (__e == EINVAL && (flags & OS_O_DIRECT)) {
708 log_err("fio: looks like your file system does not " \
709 "support direct=1/buffered=0\n");
712 td_verror(td, __e, buf);
716 if (!from_hash && f->fd != -1) {
717 if (add_file_hash(f)) {
721 * Stash away descriptor for later close. This is to
722 * work-around a "feature" on Linux, where a close of
723 * an fd that has been opened for write will trigger
724 * udev to call blkid to check partitions, fs id, etc.
725 * That pollutes the device cache, which can slow down
726 * unbuffered accesses.
728 if (f->shadow_fd == -1)
729 f->shadow_fd = f->fd;
732 * OK to ignore, we haven't done anything
735 ret = generic_close_file(td, f);
745 * This function i.e. get_file_size() is the default .get_file_size
746 * implementation of majority of I/O engines.
748 int generic_get_file_size(struct thread_data *td, struct fio_file *f)
750 return get_file_size(td, f);
754 * open/close all files, so that ->real_file_size gets set
756 static int get_file_sizes(struct thread_data *td)
762 for_each_file(td, f, i) {
763 dprint(FD_FILE, "get file size for %p/%d/%s\n", f, i,
766 if (td_io_get_file_size(td, f)) {
767 if (td->error != ENOENT) {
768 log_err("%s\n", td->verror);
776 * There are corner cases where we end up with -1 for
777 * ->real_file_size due to unsupported file type, etc.
778 * We then just set to size option value divided by number
779 * of files, similar to the way file ->io_size is set.
780 * stat(2) failure doesn't set ->real_file_size to -1.
782 if (f->real_file_size == -1ULL && td->o.size)
783 f->real_file_size = td->o.size / td->o.nr_files;
790 struct flist_head list;
797 * Get free number of bytes for each file on each unique mount.
799 static unsigned long long get_fs_free_counts(struct thread_data *td)
801 struct flist_head *n, *tmp;
802 unsigned long long ret = 0;
803 struct fio_mount *fm;
808 for_each_file(td, f, i) {
812 if (f->filetype == FIO_TYPE_BLOCK || f->filetype == FIO_TYPE_CHAR) {
813 if (f->real_file_size != -1ULL)
814 ret += f->real_file_size;
816 } else if (f->filetype != FIO_TYPE_FILE)
819 snprintf(buf, ARRAY_SIZE(buf), "%s", f->file_name);
821 if (stat(buf, &sb) < 0) {
825 if (stat(buf, &sb) < 0)
830 flist_for_each(n, &list) {
831 fm = flist_entry(n, struct fio_mount, list);
832 if (fm->key == sb.st_dev)
841 fm = calloc(1, sizeof(*fm));
842 snprintf(fm->__base, ARRAY_SIZE(fm->__base), "%s", buf);
843 fm->base = basename(fm->__base);
845 flist_add(&fm->list, &list);
848 flist_for_each_safe(n, tmp, &list) {
849 unsigned long long sz;
851 fm = flist_entry(n, struct fio_mount, list);
852 flist_del(&fm->list);
854 sz = get_fs_free_size(fm->base);
855 if (sz && sz != -1ULL)
864 uint64_t get_start_offset(struct thread_data *td, struct fio_file *f)
867 struct thread_options *o = &td->o;
868 unsigned long long align_bs;
869 unsigned long long offset;
870 unsigned long long increment;
872 if (o->file_append && f->filetype == FIO_TYPE_FILE)
873 return f->real_file_size;
875 if (o->offset_increment_percent) {
876 assert(!o->offset_increment);
877 increment = o->offset_increment_percent * f->real_file_size / 100;
880 increment = o->offset_increment;
882 if (o->start_offset_percent > 0) {
883 /* calculate the raw offset */
884 offset = (f->real_file_size * o->start_offset_percent / 100) +
885 (td->subjob_number * increment);
889 /* start_offset_percent not set */
890 offset = o->start_offset +
891 td->subjob_number * increment;
896 * if offset_align is provided, use it
898 if (fio_option_is_set(o, start_offset_align)) {
899 align_bs = o->start_offset_align;
901 /* else take the minimum block size */
902 align_bs = td_min_bs(td);
906 * block align the offset at the next available boundary at
907 * ceiling(offset / align_bs) * align_bs
909 offset = (offset / align_bs + (offset % align_bs != 0)) * align_bs;
916 * Find longest path component that exists and return its length
918 int longest_existing_path(char *path) {
929 sprintf(buf, "%s", path);
932 buf_pos = strrchr(buf, FIO_OS_PATH_SEPARATOR);
939 *(buf_pos + 1) = '\0';
942 dwAttr = GetFileAttributesA(buf);
943 if (dwAttr != INVALID_FILE_ATTRIBUTES) {
947 if (stat(buf, &sb) == 0)
951 offset = buf_pos - buf;
959 static bool create_work_dirs(struct thread_data *td, const char *fname)
965 snprintf(path, PATH_MAX, "%s", fname);
968 offset = longest_existing_path(path);
969 end = start + offset;
970 while ((end = strchr(end, FIO_OS_PATH_SEPARATOR)) != NULL) {
977 if (fio_mkdir(path, 0700) && errno != EEXIST) {
978 log_err("fio: failed to create dir (%s): %s\n",
979 start, strerror(errno));
982 *end = FIO_OS_PATH_SEPARATOR;
985 td->flags |= TD_F_DIRS_CREATED;
990 * Open the files and setup files sizes, creating files if necessary.
992 int setup_files(struct thread_data *td)
994 unsigned long long total_size, extend_size;
995 struct thread_options *o = &td->o;
997 unsigned int i, nr_fs_extra = 0;
998 int err = 0, need_extend;
1000 const unsigned long long bs = td_min_bs(td);
1003 dprint(FD_FILE, "setup files\n");
1005 old_state = td_bump_runstate(td, TD_SETTING_UP);
1007 for_each_file(td, f, i) {
1008 if (!td_ioengine_flagged(td, FIO_DISKLESSIO) &&
1009 strchr(f->file_name, FIO_OS_PATH_SEPARATOR) &&
1010 !(td->flags & TD_F_DIRS_CREATED) &&
1011 !create_work_dirs(td, f->file_name))
1016 * Find out physical size of files or devices for this thread,
1017 * before we determine I/O size and range of our targets.
1018 * If ioengine defines a setup() method, it's responsible for
1019 * opening the files and setting f->real_file_size to indicate
1020 * the valid range for that file.
1022 if (td->io_ops->setup)
1023 err = td->io_ops->setup(td);
1025 err = get_file_sizes(td);
1030 if (o->read_iolog_file)
1034 * check sizes. if the files/devices do not exist and the size
1035 * isn't passed to fio, abort.
1038 for_each_file(td, f, i) {
1040 if (f->real_file_size == -1ULL)
1043 total_size += f->real_file_size;
1047 td->fill_device_size = get_fs_free_counts(td);
1050 * device/file sizes are zero and no size given, punt
1052 if ((!total_size || total_size == -1ULL) && !o->size &&
1053 !td_ioengine_flagged(td, FIO_NOIO) && !o->fill_device &&
1054 !(o->nr_files && (o->file_size_low || o->file_size_high))) {
1055 log_err("%s: you need to specify size=\n", o->name);
1056 td_verror(td, EINVAL, "total_file_size");
1061 * Calculate per-file size and potential extra size for the
1062 * first files, if needed (i.e. if we don't have a fixed size).
1064 if (!o->file_size_low && o->nr_files) {
1067 fs = o->size / o->nr_files;
1068 all_fs = fs * o->nr_files;
1070 if (all_fs < o->size)
1071 nr_fs_extra = (o->size - all_fs) / bs;
1075 * now file sizes are known, so we can set ->io_size. if size= is
1076 * not given, ->io_size is just equal to ->real_file_size. if size
1077 * is given, ->io_size is size / nr_files.
1079 extend_size = total_size = 0;
1081 for_each_file(td, f, i) {
1082 f->file_offset = get_start_offset(td, f);
1085 * Update ->io_size depending on options specified.
1086 * ->file_size_low being 0 means filesize option isn't set.
1087 * Non zero ->file_size_low equals ->file_size_high means
1088 * filesize option is set in a fixed size format.
1089 * Non zero ->file_size_low not equals ->file_size_high means
1090 * filesize option is set in a range format.
1092 if (!o->file_size_low) {
1094 * no file size or range given, file size is equal to
1095 * total size divided by number of files. If the size
1096 * doesn't divide nicely with the min blocksize,
1097 * make the first files bigger.
1106 * We normally don't come here for regular files, but
1107 * if the result is 0 for a regular file, set it to the
1108 * real file size. This could be size of the existing
1109 * one if it already exists, but otherwise will be set
1110 * to 0. A new file won't be created because
1111 * ->io_size + ->file_offset equals ->real_file_size.
1114 if (f->file_offset > f->real_file_size)
1116 f->io_size = f->real_file_size - f->file_offset;
1118 log_info("fio: file %s may be ignored\n",
1121 } else if (f->real_file_size < o->file_size_low ||
1122 f->real_file_size > o->file_size_high) {
1123 if (f->file_offset > o->file_size_low)
1126 * file size given. if it's fixed, use that. if it's a
1127 * range, generate a random size in-between.
1129 if (o->file_size_low == o->file_size_high)
1130 f->io_size = o->file_size_low - f->file_offset;
1132 f->io_size = get_rand_file_size(td)
1136 f->io_size = f->real_file_size - f->file_offset;
1138 if (f->io_size == -1ULL)
1143 if (o->size_percent && o->size_percent != 100) {
1146 file_size = f->io_size + f->file_offset;
1147 f->io_size = (file_size *
1148 o->size_percent) / 100;
1149 if (f->io_size > (file_size - f->file_offset))
1150 f->io_size = file_size - f->file_offset;
1152 f->io_size -= (f->io_size % td_min_bs(td));
1155 io_size = f->io_size;
1156 if (o->io_size_percent && o->io_size_percent != 100) {
1157 io_size *= o->io_size_percent;
1161 total_size += io_size;
1164 if (f->filetype == FIO_TYPE_FILE &&
1165 (f->io_size + f->file_offset) > f->real_file_size) {
1166 if (!td_ioengine_flagged(td, FIO_DISKLESSIO) &&
1167 !o->create_on_open) {
1169 extend_size += (f->io_size + f->file_offset);
1170 fio_file_set_extend(f);
1171 } else if (!td_ioengine_flagged(td, FIO_DISKLESSIO) ||
1172 (td_ioengine_flagged(td, FIO_DISKLESSIO) &&
1173 td_ioengine_flagged(td, FIO_FAKEIO)))
1174 f->real_file_size = f->io_size + f->file_offset;
1178 if (td->o.block_error_hist) {
1181 assert(td->o.nr_files == 1); /* checked in fixup_options */
1183 len = f->io_size / td->o.bs[DDIR_TRIM];
1184 if (len > MAX_NR_BLOCK_INFOS || len <= 0) {
1185 log_err("fio: cannot calculate block histogram with "
1186 "%d trim blocks, maximum %d\n",
1187 len, MAX_NR_BLOCK_INFOS);
1188 td_verror(td, EINVAL, "block_error_hist");
1192 td->ts.nr_block_infos = len;
1193 for (i = 0; i < len; i++)
1194 td->ts.block_infos[i] =
1195 BLOCK_INFO(0, BLOCK_STATE_UNINIT);
1197 td->ts.nr_block_infos = 0;
1199 if (!o->size || (total_size && o->size > total_size))
1200 o->size = total_size;
1202 if (o->size < td_min_bs(td)) {
1203 log_err("fio: blocksize too large for data set\n");
1208 * See if we need to extend some files, typically needed when our
1209 * target regular files don't exist yet, but our jobs require them
1210 * initially due to read I/Os.
1214 if (output_format & FIO_OUTPUT_NORMAL) {
1215 log_info("%s: Laying out IO file%s (%u file%s / %s%lluMiB)\n",
1217 need_extend > 1 ? "s" : "",
1219 need_extend > 1 ? "s" : "",
1220 need_extend > 1 ? "total " : "",
1224 for_each_file(td, f, i) {
1225 unsigned long long old_len = -1ULL, extend_len = -1ULL;
1227 if (!fio_file_extend(f))
1230 assert(f->filetype == FIO_TYPE_FILE);
1231 fio_file_clear_extend(f);
1232 if (!o->fill_device) {
1233 old_len = f->real_file_size;
1234 extend_len = f->io_size + f->file_offset -
1237 f->real_file_size = (f->io_size + f->file_offset);
1238 err = extend_file(td, f);
1242 err = __file_invalidate_cache(td, f, old_len,
1246 * Shut up static checker
1262 * iolog already set the total io size, if we read back
1265 if (!o->read_iolog_file) {
1267 td->total_io_size = o->io_size * o->loops;
1269 td->total_io_size = o->size * o->loops;
1276 td_restore_runstate(td, old_state);
1278 if (td->o.zone_mode == ZONE_MODE_ZBD) {
1279 err = zbd_setup_files(td);
1286 log_err("%s: you need to specify valid offset=\n", o->name);
1288 td_restore_runstate(td, old_state);
1292 bool pre_read_files(struct thread_data *td)
1297 dprint(FD_FILE, "pre_read files\n");
1299 for_each_file(td, f, i) {
1300 if (!pre_read_file(td, f))
1307 static void __init_rand_distribution(struct thread_data *td, struct fio_file *f)
1309 unsigned int range_size, seed;
1313 range_size = min(td->o.min_bs[DDIR_READ], td->o.min_bs[DDIR_WRITE]);
1314 fsize = min(f->real_file_size, f->io_size);
1316 nranges = (fsize + range_size - 1ULL) / range_size;
1318 seed = jhash(f->file_name, strlen(f->file_name), 0) * td->thread_number;
1319 if (!td->o.rand_repeatable)
1320 seed = td->rand_seeds[4];
1322 if (td->o.random_distribution == FIO_RAND_DIST_ZIPF)
1323 zipf_init(&f->zipf, nranges, td->o.zipf_theta.u.f, seed);
1324 else if (td->o.random_distribution == FIO_RAND_DIST_PARETO)
1325 pareto_init(&f->zipf, nranges, td->o.pareto_h.u.f, seed);
1326 else if (td->o.random_distribution == FIO_RAND_DIST_GAUSS)
1327 gauss_init(&f->gauss, nranges, td->o.gauss_dev.u.f, seed);
1330 static bool init_rand_distribution(struct thread_data *td)
1336 if (td->o.random_distribution == FIO_RAND_DIST_RANDOM ||
1337 td->o.random_distribution == FIO_RAND_DIST_ZONED ||
1338 td->o.random_distribution == FIO_RAND_DIST_ZONED_ABS)
1341 state = td_bump_runstate(td, TD_SETTING_UP);
1343 for_each_file(td, f, i)
1344 __init_rand_distribution(td, f);
1346 td_restore_runstate(td, state);
1351 * Check if the number of blocks exceeds the randomness capability of
1352 * the selected generator. Tausworthe is 32-bit, the others are fullly
1355 static int check_rand_gen_limits(struct thread_data *td, struct fio_file *f,
1358 if (blocks <= FRAND32_MAX)
1360 if (td->o.random_generator != FIO_RAND_GEN_TAUSWORTHE)
1364 * If the user hasn't specified a random generator, switch
1365 * to tausworthe64 with informational warning. If the user did
1366 * specify one, just warn.
1368 log_info("fio: file %s exceeds 32-bit tausworthe random generator.\n",
1371 if (!fio_option_is_set(&td->o, random_generator)) {
1372 log_info("fio: Switching to tausworthe64. Use the "
1373 "random_generator= option to get rid of this "
1375 td->o.random_generator = FIO_RAND_GEN_TAUSWORTHE64;
1380 * Just make this information to avoid breaking scripts.
1382 log_info("fio: Use the random_generator= option to switch to lfsr or "
1387 bool init_random_map(struct thread_data *td)
1389 unsigned long long blocks;
1393 if (init_rand_distribution(td))
1398 for_each_file(td, f, i) {
1399 uint64_t fsize = min(f->real_file_size, f->io_size);
1401 if (td->o.zone_mode == ZONE_MODE_STRIDED)
1402 fsize = td->o.zone_range;
1404 blocks = fsize / (unsigned long long) td->o.rw_min_bs;
1406 if (check_rand_gen_limits(td, f, blocks))
1409 if (td->o.random_generator == FIO_RAND_GEN_LFSR) {
1412 seed = td->rand_seeds[FIO_RAND_BLOCK_OFF];
1414 if (!lfsr_init(&f->lfsr, blocks, seed, 0)) {
1415 fio_file_set_lfsr(f);
1418 log_err("fio: failed initializing LFSR\n");
1421 } else if (!td->o.norandommap) {
1422 f->io_axmap = axmap_new(blocks);
1424 fio_file_set_axmap(f);
1427 } else if (td->o.norandommap)
1430 if (!td->o.softrandommap) {
1431 log_err("fio: failed allocating random map. If running"
1432 " a large number of jobs, try the 'norandommap'"
1433 " option or set 'softrandommap'. Or give"
1434 " a larger --alloc-size to fio.\n");
1438 log_info("fio: file %s failed allocating random map. Running "
1439 "job without.\n", f->file_name);
1445 void close_files(struct thread_data *td)
1450 for_each_file(td, f, i) {
1451 if (fio_file_open(f))
1452 td_io_close_file(td, f);
1456 void fio_file_free(struct fio_file *f)
1458 if (fio_file_axmap(f))
1459 axmap_free(f->io_axmap);
1460 if (!fio_file_smalloc(f)) {
1464 sfree(f->file_name);
1469 void close_and_free_files(struct thread_data *td)
1474 dprint(FD_FILE, "close files\n");
1476 for_each_file(td, f, i) {
1477 if (td->o.unlink && f->filetype == FIO_TYPE_FILE) {
1478 dprint(FD_FILE, "free unlink %s\n", f->file_name);
1479 td_io_unlink_file(td, f);
1482 if (fio_file_open(f))
1483 td_io_close_file(td, f);
1485 remove_file_hash(f);
1487 if (td->o.unlink && f->filetype == FIO_TYPE_FILE) {
1488 dprint(FD_FILE, "free unlink %s\n", f->file_name);
1489 td_io_unlink_file(td, f);
1496 td->o.filename = NULL;
1498 free(td->file_locks);
1499 td->files_index = 0;
1501 td->file_locks = NULL;
1502 td->o.file_lock_mode = FILE_LOCK_NONE;
1506 static void get_file_type(struct fio_file *f)
1510 if (!strcmp(f->file_name, "-"))
1511 f->filetype = FIO_TYPE_PIPE;
1513 f->filetype = FIO_TYPE_FILE;
1516 /* \\.\ is the device namespace in Windows, where every file is
1518 if (strncmp(f->file_name, "\\\\.\\", 4) == 0)
1519 f->filetype = FIO_TYPE_BLOCK;
1522 if (!stat(f->file_name, &sb)) {
1523 if (S_ISBLK(sb.st_mode))
1524 f->filetype = FIO_TYPE_BLOCK;
1525 else if (S_ISCHR(sb.st_mode))
1526 f->filetype = FIO_TYPE_CHAR;
1527 else if (S_ISFIFO(sb.st_mode))
1528 f->filetype = FIO_TYPE_PIPE;
1532 static bool __is_already_allocated(const char *fname, bool set)
1534 struct flist_head *entry;
1537 ret = file_bloom_exists(fname, set);
1541 flist_for_each(entry, &filename_list) {
1542 struct file_name *fn;
1544 fn = flist_entry(entry, struct file_name, list);
1546 if (!strcmp(fn->filename, fname))
1553 static bool is_already_allocated(const char *fname)
1557 fio_file_hash_lock();
1558 ret = __is_already_allocated(fname, false);
1559 fio_file_hash_unlock();
1564 static void set_already_allocated(const char *fname)
1566 struct file_name *fn;
1568 fn = malloc(sizeof(struct file_name));
1569 fn->filename = strdup(fname);
1571 fio_file_hash_lock();
1572 if (!__is_already_allocated(fname, true)) {
1573 flist_add_tail(&fn->list, &filename_list);
1576 fio_file_hash_unlock();
1584 static void free_already_allocated(void)
1586 struct flist_head *entry, *tmp;
1587 struct file_name *fn;
1589 if (flist_empty(&filename_list))
1592 fio_file_hash_lock();
1593 flist_for_each_safe(entry, tmp, &filename_list) {
1594 fn = flist_entry(entry, struct file_name, list);
1596 flist_del(&fn->list);
1600 fio_file_hash_unlock();
1603 static struct fio_file *alloc_new_file(struct thread_data *td)
1607 if (td_ioengine_flagged(td, FIO_NOFILEHASH))
1608 f = calloc(1, sizeof(*f));
1610 f = scalloc(1, sizeof(*f));
1618 fio_file_reset(td, f);
1619 if (!td_ioengine_flagged(td, FIO_NOFILEHASH))
1620 fio_file_set_smalloc(f);
1624 bool exists_and_not_regfile(const char *filename)
1628 if (lstat(filename, &sb) == -1)
1631 #ifndef WIN32 /* NOT Windows */
1632 if (S_ISREG(sb.st_mode))
1635 /* \\.\ is the device namespace in Windows, where every file
1636 * is a device node */
1637 if (S_ISREG(sb.st_mode) && strncmp(filename, "\\\\.\\", 4) != 0)
1644 int add_file(struct thread_data *td, const char *fname, int numjob, int inc)
1646 int cur_files = td->files_index;
1647 char file_name[PATH_MAX];
1651 dprint(FD_FILE, "add file %s\n", fname);
1653 if (td->o.directory)
1654 len = set_name_idx(file_name, PATH_MAX, td->o.directory, numjob,
1655 td->o.unique_filename);
1657 sprintf(file_name + len, "%s", fname);
1659 /* clean cloned siblings using existing files */
1660 if (numjob && is_already_allocated(file_name) &&
1661 !exists_and_not_regfile(fname))
1664 f = alloc_new_file(td);
1666 if (td->files_size <= td->files_index) {
1667 unsigned int new_size = td->o.nr_files + 1;
1669 dprint(FD_FILE, "resize file array to %d files\n", new_size);
1671 td->files = realloc(td->files, new_size * sizeof(f));
1672 if (td->files == NULL) {
1673 log_err("fio: realloc OOM\n");
1676 if (td->o.file_lock_mode != FILE_LOCK_NONE) {
1677 td->file_locks = realloc(td->file_locks, new_size);
1678 if (!td->file_locks) {
1679 log_err("fio: realloc OOM\n");
1682 td->file_locks[cur_files] = FILE_LOCK_NONE;
1684 td->files_size = new_size;
1686 td->files[cur_files] = f;
1687 f->fileno = cur_files;
1690 * init function, io engine may not be loaded yet
1692 if (td->io_ops && td_ioengine_flagged(td, FIO_DISKLESSIO))
1693 f->real_file_size = -1ULL;
1695 if (td_ioengine_flagged(td, FIO_NOFILEHASH))
1696 f->file_name = strdup(file_name);
1698 f->file_name = smalloc_strdup(file_name);
1700 /* can't handle smalloc failure from here */
1701 assert(f->file_name);
1705 switch (td->o.file_lock_mode) {
1706 case FILE_LOCK_NONE:
1708 case FILE_LOCK_READWRITE:
1709 f->rwlock = fio_rwlock_init();
1711 case FILE_LOCK_EXCLUSIVE:
1712 f->lock = fio_sem_init(FIO_SEM_UNLOCKED);
1715 log_err("fio: unknown lock mode: %d\n", td->o.file_lock_mode);
1721 if (td->o.numjobs > 1)
1722 set_already_allocated(file_name);
1727 dprint(FD_FILE, "file %p \"%s\" added at %d\n", f, f->file_name,
1733 int add_file_exclusive(struct thread_data *td, const char *fname)
1738 for_each_file(td, f, i) {
1739 if (!strcmp(f->file_name, fname))
1743 return add_file(td, fname, 0, 1);
1746 void get_file(struct fio_file *f)
1748 dprint(FD_FILE, "get file %s, ref=%d\n", f->file_name, f->references);
1749 assert(fio_file_open(f));
1753 int put_file(struct thread_data *td, struct fio_file *f)
1755 int f_ret = 0, ret = 0;
1757 dprint(FD_FILE, "put file %s, ref=%d\n", f->file_name, f->references);
1759 if (!fio_file_open(f)) {
1760 assert(f->fd == -1);
1764 assert(f->references);
1765 if (--f->references)
1768 disk_util_dec(f->du);
1770 if (td->o.file_lock_mode != FILE_LOCK_NONE)
1771 unlock_file_all(td, f);
1773 if (should_fsync(td) && td->o.fsync_on_close) {
1774 f_ret = fsync(f->fd);
1779 if (td->io_ops->close_file)
1780 ret = td->io_ops->close_file(td, f);
1785 td->nr_open_files--;
1786 fio_file_clear_closing(f);
1787 fio_file_clear_open(f);
1788 assert(f->fd == -1);
1792 void lock_file(struct thread_data *td, struct fio_file *f, enum fio_ddir ddir)
1794 if (!f->lock || td->o.file_lock_mode == FILE_LOCK_NONE)
1797 if (td->o.file_lock_mode == FILE_LOCK_READWRITE) {
1798 if (ddir == DDIR_READ)
1799 fio_rwlock_read(f->rwlock);
1801 fio_rwlock_write(f->rwlock);
1802 } else if (td->o.file_lock_mode == FILE_LOCK_EXCLUSIVE)
1803 fio_sem_down(f->lock);
1805 td->file_locks[f->fileno] = td->o.file_lock_mode;
1808 void unlock_file(struct thread_data *td, struct fio_file *f)
1810 if (!f->lock || td->o.file_lock_mode == FILE_LOCK_NONE)
1813 if (td->o.file_lock_mode == FILE_LOCK_READWRITE)
1814 fio_rwlock_unlock(f->rwlock);
1815 else if (td->o.file_lock_mode == FILE_LOCK_EXCLUSIVE)
1816 fio_sem_up(f->lock);
1818 td->file_locks[f->fileno] = FILE_LOCK_NONE;
1821 void unlock_file_all(struct thread_data *td, struct fio_file *f)
1823 if (td->o.file_lock_mode == FILE_LOCK_NONE || !td->file_locks)
1825 if (td->file_locks[f->fileno] != FILE_LOCK_NONE)
1829 static bool recurse_dir(struct thread_data *td, const char *dirname)
1835 D = opendir(dirname);
1837 char buf[FIO_VERROR_SIZE];
1839 snprintf(buf, FIO_VERROR_SIZE, "opendir(%s)", dirname);
1840 td_verror(td, errno, buf);
1844 while ((dir = readdir(D)) != NULL) {
1845 char full_path[PATH_MAX];
1848 if (!strcmp(dir->d_name, ".") || !strcmp(dir->d_name, ".."))
1851 sprintf(full_path, "%s%c%s", dirname, FIO_OS_PATH_SEPARATOR, dir->d_name);
1853 if (lstat(full_path, &sb) == -1) {
1854 if (errno != ENOENT) {
1855 td_verror(td, errno, "stat");
1861 if (S_ISREG(sb.st_mode)) {
1862 add_file(td, full_path, 0, 1);
1865 if (!S_ISDIR(sb.st_mode))
1868 ret = recurse_dir(td, full_path);
1877 int add_dir_files(struct thread_data *td, const char *path)
1879 int ret = recurse_dir(td, path);
1882 log_info("fio: opendir added %d files\n", td->o.nr_files);
1887 void dup_files(struct thread_data *td, struct thread_data *org)
1892 dprint(FD_FILE, "dup files: %d\n", org->files_index);
1897 td->files = malloc(org->files_index * sizeof(f));
1899 if (td->o.file_lock_mode != FILE_LOCK_NONE)
1900 td->file_locks = malloc(org->files_index);
1902 for_each_file(org, f, i) {
1903 struct fio_file *__f;
1905 __f = alloc_new_file(td);
1908 if (td_ioengine_flagged(td, FIO_NOFILEHASH))
1909 __f->file_name = strdup(f->file_name);
1911 __f->file_name = smalloc_strdup(f->file_name);
1913 /* can't handle smalloc failure from here */
1914 assert(__f->file_name);
1915 __f->filetype = f->filetype;
1918 if (td->o.file_lock_mode == FILE_LOCK_EXCLUSIVE)
1919 __f->lock = f->lock;
1920 else if (td->o.file_lock_mode == FILE_LOCK_READWRITE)
1921 __f->rwlock = f->rwlock;
1928 * Returns the index that matches the filename, or -1 if not there
1930 int get_fileno(struct thread_data *td, const char *fname)
1935 for_each_file(td, f, i)
1936 if (!strcmp(f->file_name, fname))
1943 * For log usage, where we add/open/close files automatically
1945 void free_release_files(struct thread_data *td)
1949 td->o.open_files = 0;
1950 td->files_index = 0;
1953 void fio_file_reset(struct thread_data *td, struct fio_file *f)
1957 for (i = 0; i < DDIR_RWDIR_CNT; i++) {
1958 f->last_pos[i] = f->file_offset;
1959 f->last_start[i] = -1ULL;
1962 if (fio_file_axmap(f))
1963 axmap_reset(f->io_axmap);
1964 else if (fio_file_lfsr(f))
1965 lfsr_reset(&f->lfsr, td->rand_seeds[FIO_RAND_BLOCK_OFF]);
1967 zbd_file_reset(td, f);
1970 bool fio_files_done(struct thread_data *td)
1975 for_each_file(td, f, i)
1976 if (!fio_file_done(f))
1982 /* free memory used in initialization phase only */
1983 void filesetup_mem_free(void)
1985 free_already_allocated();
1989 * This function is for platforms which support direct I/O but not O_DIRECT.
1991 int fio_set_directio(struct thread_data *td, struct fio_file *f)
1993 #ifdef FIO_OS_DIRECTIO
1994 int ret = fio_set_odirect(f);
1997 td_verror(td, ret, "fio_set_directio");
1998 #if defined(__sun__)
1999 if (ret == ENOTTY) { /* ENOTTY suggests RAW device or ZFS */
2000 log_err("fio: doing directIO to RAW devices or ZFS not supported\n");
2002 log_err("fio: the file system does not seem to support direct IO\n");
2005 log_err("fio: the file system does not seem to support direct IO\n");
2012 log_err("fio: direct IO is not supported on this host operating system\n");