17 #include "lib/axmap.h"
19 #ifdef CONFIG_LINUX_FALLOCATE
20 #include <linux/falloc.h>
25 static FLIST_HEAD(filename_list);
27 static inline void clear_error(struct thread_data *td)
34 * Leaves f->fd open on success, caller must close
36 static int extend_file(struct thread_data *td, struct fio_file *f)
38 int r, new_layout = 0, unlink_file = 0, flags;
39 unsigned long long left;
44 log_err("fio: refusing extend of file due to read-only\n");
49 * check if we need to lay the file out complete again. fio
50 * does that for operations involving reads, or for writes
51 * where overwrite is set
54 (td_write(td) && td->o.overwrite && !td->o.file_append) ||
55 (td_write(td) && td->io_ops->flags & FIO_NOEXTEND))
57 if (td_write(td) && !td->o.overwrite && !td->o.file_append)
60 if (unlink_file || new_layout) {
61 dprint(FD_FILE, "layout unlink %s\n", f->file_name);
62 if ((td_io_unlink_file(td, f) < 0) && (errno != ENOENT)) {
63 td_verror(td, errno, "unlink");
69 if (td->o.allow_create)
78 dprint(FD_FILE, "open file %s, flags %x\n", f->file_name, flags);
79 f->fd = open(f->file_name, flags, 0644);
83 if (err == ENOENT && !td->o.allow_create)
84 log_err("fio: file creation disallowed by "
85 "allow_file_create=0\n");
87 td_verror(td, err, "open");
91 #ifdef CONFIG_POSIX_FALLOCATE
92 if (!td->o.fill_device) {
93 switch (td->o.fallocate_mode) {
94 case FIO_FALLOCATE_NONE:
96 case FIO_FALLOCATE_POSIX:
97 dprint(FD_FILE, "posix_fallocate file %s size %llu\n",
99 (unsigned long long) f->real_file_size);
101 r = posix_fallocate(f->fd, 0, f->real_file_size);
103 log_err("fio: posix_fallocate fails: %s\n",
107 #ifdef CONFIG_LINUX_FALLOCATE
108 case FIO_FALLOCATE_KEEP_SIZE:
110 "fallocate(FALLOC_FL_KEEP_SIZE) "
111 "file %s size %llu\n", f->file_name,
112 (unsigned long long) f->real_file_size);
114 r = fallocate(f->fd, FALLOC_FL_KEEP_SIZE, 0,
117 td_verror(td, errno, "fallocate");
120 #endif /* CONFIG_LINUX_FALLOCATE */
122 log_err("fio: unknown fallocate mode: %d\n",
123 td->o.fallocate_mode);
127 #endif /* CONFIG_POSIX_FALLOCATE */
133 * The size will be -1ULL when fill_device is used, so don't truncate
134 * or fallocate this file, just write it
136 if (!td->o.fill_device) {
137 dprint(FD_FILE, "truncate file %s, size %llu\n", f->file_name,
138 (unsigned long long) f->real_file_size);
139 if (ftruncate(f->fd, f->real_file_size) == -1) {
140 if (errno != EFBIG) {
141 td_verror(td, errno, "ftruncate");
147 b = malloc(td->o.max_bs[DDIR_WRITE]);
149 left = f->real_file_size;
150 while (left && !td->terminate) {
151 bs = td->o.max_bs[DDIR_WRITE];
155 fill_io_buffer(td, b, bs, bs);
157 r = write(f->fd, b, bs);
167 if (td->o.fill_device)
169 log_info("fio: ENOSPC on laying out "
173 td_verror(td, errno, "write");
175 td_verror(td, EIO, "write");
182 dprint(FD_FILE, "terminate unlink %s\n", f->file_name);
183 td_io_unlink_file(td, f);
184 } else if (td->o.create_fsync) {
185 if (fsync(f->fd) < 0) {
186 td_verror(td, errno, "fsync");
190 if (td->o.fill_device && !td_write(td)) {
191 fio_file_clear_size_known(f);
192 if (td_io_get_file_size(td, f))
194 if (f->io_size > f->real_file_size)
195 f->io_size = f->real_file_size;
209 static int pre_read_file(struct thread_data *td, struct fio_file *f)
211 int ret = 0, r, did_open = 0, old_runstate;
212 unsigned long long left;
216 if (td->io_ops->flags & FIO_PIPEIO)
219 if (!fio_file_open(f)) {
220 if (td->io_ops->open_file(td, f)) {
221 log_err("fio: cannot pre-read, failed to open file\n");
227 old_runstate = td_bump_runstate(td, TD_PRE_READING);
229 bs = td->o.max_bs[DDIR_READ];
233 if (lseek(f->fd, f->file_offset, SEEK_SET) < 0) {
234 td_verror(td, errno, "lseek");
235 log_err("fio: failed to lseek pre-read file\n");
242 while (left && !td->terminate) {
246 r = read(f->fd, b, bs);
252 td_verror(td, EIO, "pre_read");
258 td_restore_runstate(td, old_runstate);
261 td->io_ops->close_file(td, f);
267 unsigned long long get_rand_file_size(struct thread_data *td)
269 unsigned long long ret, sized;
273 frand_max = rand_max(&td->file_size_state);
274 r = __rand(&td->file_size_state);
275 sized = td->o.file_size_high - td->o.file_size_low;
276 ret = (unsigned long long) ((double) sized * (r / (frand_max + 1.0)));
277 ret += td->o.file_size_low;
278 ret -= (ret % td->o.rw_min_bs);
282 static int file_size(struct thread_data *td, struct fio_file *f)
286 if (stat(f->file_name, &st) == -1) {
287 td_verror(td, errno, "fstat");
291 f->real_file_size = st.st_size;
295 static int bdev_size(struct thread_data *td, struct fio_file *f)
297 unsigned long long bytes = 0;
300 if (td->io_ops->open_file(td, f)) {
301 log_err("fio: failed opening blockdev %s for size check\n",
306 r = blockdev_size(f, &bytes);
308 td_verror(td, r, "blockdev_size");
313 log_err("%s: zero sized block device?\n", f->file_name);
317 f->real_file_size = bytes;
318 td->io_ops->close_file(td, f);
321 td->io_ops->close_file(td, f);
325 static int char_size(struct thread_data *td, struct fio_file *f)
327 #ifdef FIO_HAVE_CHARDEV_SIZE
328 unsigned long long bytes = 0;
331 if (td->io_ops->open_file(td, f)) {
332 log_err("fio: failed opening blockdev %s for size check\n",
337 r = chardev_size(f, &bytes);
339 td_verror(td, r, "chardev_size");
344 log_err("%s: zero sized char device?\n", f->file_name);
348 f->real_file_size = bytes;
349 td->io_ops->close_file(td, f);
352 td->io_ops->close_file(td, f);
355 f->real_file_size = -1ULL;
360 static int get_file_size(struct thread_data *td, struct fio_file *f)
364 if (fio_file_size_known(f))
367 if (f->filetype == FIO_TYPE_FILE)
368 ret = file_size(td, f);
369 else if (f->filetype == FIO_TYPE_BD)
370 ret = bdev_size(td, f);
371 else if (f->filetype == FIO_TYPE_CHAR)
372 ret = char_size(td, f);
374 f->real_file_size = -1;
379 if (f->file_offset > f->real_file_size) {
380 log_err("%s: offset extends end (%llu > %llu)\n", td->o.name,
381 (unsigned long long) f->file_offset,
382 (unsigned long long) f->real_file_size);
386 fio_file_set_size_known(f);
390 static int __file_invalidate_cache(struct thread_data *td, struct fio_file *f,
391 unsigned long long off,
392 unsigned long long len)
394 int errval = 0, ret = 0;
403 off = f->file_offset;
405 if (len == -1ULL || off == -1ULL)
408 dprint(FD_IO, "invalidate cache %s: %llu/%llu\n", f->file_name, off,
411 if (td->io_ops->invalidate) {
412 ret = td->io_ops->invalidate(td, f);
415 } else if (f->filetype == FIO_TYPE_FILE) {
416 ret = posix_fadvise(f->fd, off, len, POSIX_FADV_DONTNEED);
419 } else if (f->filetype == FIO_TYPE_BD) {
422 ret = blockdev_invalidate_cache(f);
423 while (ret < 0 && errno == EAGAIN && retry_count++ < 25) {
425 * Linux multipath devices reject ioctl while
426 * the maps are being updated. That window can
427 * last tens of milliseconds; we'll try up to
428 * a quarter of a second.
431 ret = blockdev_invalidate_cache(f);
433 if (ret < 0 && errno == EACCES && geteuid()) {
435 log_err("fio: only root may flush block "
436 "devices. Cache flush bypassed!\n");
443 } else if (f->filetype == FIO_TYPE_CHAR || f->filetype == FIO_TYPE_PIPE)
447 * Cache flushing isn't a fatal condition, and we know it will
448 * happen on some platforms where we don't have the proper
449 * function to flush eg block device caches. So just warn and
450 * continue on our way.
453 log_info("fio: cache invalidation of %s failed: %s\n", f->file_name, strerror(errval));
459 int file_invalidate_cache(struct thread_data *td, struct fio_file *f)
461 if (!fio_file_open(f))
464 return __file_invalidate_cache(td, f, -1ULL, -1ULL);
467 int generic_close_file(struct thread_data fio_unused *td, struct fio_file *f)
471 dprint(FD_FILE, "fd close %s\n", f->file_name);
475 if (close(f->fd) < 0)
480 if (f->shadow_fd != -1) {
489 int file_lookup_open(struct fio_file *f, int flags)
491 struct fio_file *__f;
494 __f = lookup_file_hash(f->file_name);
496 dprint(FD_FILE, "found file in hash %s\n", f->file_name);
498 * racy, need the __f->lock locked
503 dprint(FD_FILE, "file not found in hash %s\n", f->file_name);
511 f->fd = open(f->file_name, flags, 0600);
515 static int file_close_shadow_fds(struct thread_data *td)
521 for_each_file(td, f, i) {
522 if (f->shadow_fd == -1)
533 int generic_open_file(struct thread_data *td, struct fio_file *f)
539 dprint(FD_FILE, "fd open %s\n", f->file_name);
541 if (!strcmp(f->file_name, "-")) {
543 log_err("fio: can't read/write to stdin/out\n");
549 * move output logging to stderr, if we are writing to stdout
558 flags |= OS_O_DIRECT;
561 td_verror(td, EINVAL, "OS does not support atomic IO");
564 flags |= OS_O_DIRECT | FIO_O_ATOMIC;
568 if (td->o.create_on_open && td->o.allow_create)
571 if (f->filetype != FIO_TYPE_FILE)
572 flags |= FIO_O_NOATIME;
579 if (f->filetype == FIO_TYPE_FILE && td->o.allow_create)
583 f->fd = dup(STDOUT_FILENO);
585 from_hash = file_lookup_open(f, flags);
586 } else if (td_read(td)) {
587 if (f->filetype == FIO_TYPE_CHAR && !read_only)
593 f->fd = dup(STDIN_FILENO);
595 from_hash = file_lookup_open(f, flags);
598 from_hash = file_lookup_open(f, flags);
602 char buf[FIO_VERROR_SIZE];
605 if (__e == EPERM && (flags & FIO_O_NOATIME)) {
606 flags &= ~FIO_O_NOATIME;
609 if (__e == EMFILE && file_close_shadow_fds(td))
612 snprintf(buf, sizeof(buf), "open(%s)", f->file_name);
614 if (__e == EINVAL && (flags & OS_O_DIRECT)) {
615 log_err("fio: looks like your file system does not " \
616 "support direct=1/buffered=0\n");
619 td_verror(td, __e, buf);
623 if (!from_hash && f->fd != -1) {
624 if (add_file_hash(f)) {
628 * Stash away descriptor for later close. This is to
629 * work-around a "feature" on Linux, where a close of
630 * an fd that has been opened for write will trigger
631 * udev to call blkid to check partitions, fs id, etc.
632 * That pollutes the device cache, which can slow down
633 * unbuffered accesses.
635 if (f->shadow_fd == -1)
636 f->shadow_fd = f->fd;
639 * OK to ignore, we haven't done anything
642 ret = generic_close_file(td, f);
651 int generic_get_file_size(struct thread_data *td, struct fio_file *f)
653 return get_file_size(td, f);
657 * open/close all files, so that ->real_file_size gets set
659 static int get_file_sizes(struct thread_data *td)
665 for_each_file(td, f, i) {
666 dprint(FD_FILE, "get file size for %p/%d/%p\n", f, i,
669 if (td_io_get_file_size(td, f)) {
670 if (td->error != ENOENT) {
671 log_err("%s\n", td->verror);
678 if (f->real_file_size == -1ULL && td->o.size)
679 f->real_file_size = td->o.size / td->o.nr_files;
686 struct flist_head list;
693 * Get free number of bytes for each file on each unique mount.
695 static unsigned long long get_fs_free_counts(struct thread_data *td)
697 struct flist_head *n, *tmp;
698 unsigned long long ret = 0;
699 struct fio_mount *fm;
704 for_each_file(td, f, i) {
708 if (f->filetype == FIO_TYPE_BD || f->filetype == FIO_TYPE_CHAR) {
709 if (f->real_file_size != -1ULL)
710 ret += f->real_file_size;
712 } else if (f->filetype != FIO_TYPE_FILE)
716 strncpy(buf, f->file_name, 255);
718 if (stat(buf, &sb) < 0) {
722 if (stat(buf, &sb) < 0)
727 flist_for_each(n, &list) {
728 fm = flist_entry(n, struct fio_mount, list);
729 if (fm->key == sb.st_dev)
738 fm = calloc(1, sizeof(*fm));
739 strncpy(fm->__base, buf, sizeof(fm->__base) - 1);
740 fm->base = basename(fm->__base);
742 flist_add(&fm->list, &list);
745 flist_for_each_safe(n, tmp, &list) {
746 unsigned long long sz;
748 fm = flist_entry(n, struct fio_mount, list);
749 flist_del(&fm->list);
751 sz = get_fs_free_size(fm->base);
752 if (sz && sz != -1ULL)
761 uint64_t get_start_offset(struct thread_data *td, struct fio_file *f)
763 struct thread_options *o = &td->o;
766 if (o->file_append && f->filetype == FIO_TYPE_FILE)
767 return f->real_file_size;
769 offset = td->o.start_offset + td->subjob_number * td->o.offset_increment;
770 if (offset % td_max_bs(td))
771 offset -= (offset % td_max_bs(td));
777 * Open the files and setup files sizes, creating files if necessary.
779 int setup_files(struct thread_data *td)
781 unsigned long long total_size, extend_size;
782 struct thread_options *o = &td->o;
784 unsigned int i, nr_fs_extra = 0;
785 int err = 0, need_extend;
787 const unsigned int bs = td_min_bs(td);
790 dprint(FD_FILE, "setup files\n");
792 old_state = td_bump_runstate(td, TD_SETTING_UP);
794 if (o->read_iolog_file)
798 * if ioengine defines a setup() method, it's responsible for
799 * opening the files and setting f->real_file_size to indicate
800 * the valid range for that file.
802 if (td->io_ops->setup)
803 err = td->io_ops->setup(td);
805 err = get_file_sizes(td);
811 * check sizes. if the files/devices do not exist and the size
812 * isn't passed to fio, abort.
815 for_each_file(td, f, i) {
817 if (f->real_file_size == -1ULL)
820 total_size += f->real_file_size;
824 td->fill_device_size = get_fs_free_counts(td);
827 * device/file sizes are zero and no size given, punt
829 if ((!total_size || total_size == -1ULL) && !o->size &&
830 !(td->io_ops->flags & FIO_NOIO) && !o->fill_device &&
831 !(o->nr_files && (o->file_size_low || o->file_size_high))) {
832 log_err("%s: you need to specify size=\n", o->name);
833 td_verror(td, EINVAL, "total_file_size");
838 * Calculate per-file size and potential extra size for the
839 * first files, if needed.
841 if (!o->file_size_low && o->nr_files) {
844 fs = o->size / o->nr_files;
845 all_fs = fs * o->nr_files;
847 if (all_fs < o->size)
848 nr_fs_extra = (o->size - all_fs) / bs;
852 * now file sizes are known, so we can set ->io_size. if size= is
853 * not given, ->io_size is just equal to ->real_file_size. if size
854 * is given, ->io_size is size / nr_files.
856 extend_size = total_size = 0;
858 for_each_file(td, f, i) {
859 f->file_offset = get_start_offset(td, f);
861 if (!o->file_size_low) {
863 * no file size range given, file size is equal to
864 * total size divided by number of files. If that is
865 * zero, set it to the real file size. If the size
866 * doesn't divide nicely with the min blocksize,
867 * make the first files bigger.
876 f->io_size = f->real_file_size - f->file_offset;
877 } else if (f->real_file_size < o->file_size_low ||
878 f->real_file_size > o->file_size_high) {
879 if (f->file_offset > o->file_size_low)
882 * file size given. if it's fixed, use that. if it's a
883 * range, generate a random size in-between.
885 if (o->file_size_low == o->file_size_high)
886 f->io_size = o->file_size_low - f->file_offset;
888 f->io_size = get_rand_file_size(td)
892 f->io_size = f->real_file_size - f->file_offset;
894 if (f->io_size == -1ULL)
898 f->io_size = (f->io_size * o->size_percent) / 100;
899 total_size += f->io_size;
902 if (f->filetype == FIO_TYPE_FILE &&
903 (f->io_size + f->file_offset) > f->real_file_size &&
904 !(td->io_ops->flags & FIO_DISKLESSIO)) {
905 if (!o->create_on_open) {
907 extend_size += (f->io_size + f->file_offset);
909 f->real_file_size = f->io_size + f->file_offset;
910 fio_file_set_extend(f);
914 if (td->o.block_error_hist) {
917 assert(td->o.nr_files == 1); /* checked in fixup_options */
919 len = f->io_size / td->o.bs[DDIR_TRIM];
920 if (len > MAX_NR_BLOCK_INFOS || len <= 0) {
921 log_err("fio: cannot calculate block histogram with "
922 "%d trim blocks, maximum %d\n",
923 len, MAX_NR_BLOCK_INFOS);
924 td_verror(td, EINVAL, "block_error_hist");
928 td->ts.nr_block_infos = len;
929 for (i = 0; i < len; i++)
930 td->ts.block_infos[i] =
931 BLOCK_INFO(0, BLOCK_STATE_UNINIT);
933 td->ts.nr_block_infos = 0;
935 if (!o->size || (total_size && o->size > total_size))
936 o->size = total_size;
938 if (o->size < td_min_bs(td)) {
939 log_err("fio: blocksize too large for data set\n");
944 * See if we need to extend some files
948 if (output_format & FIO_OUTPUT_NORMAL)
949 log_info("%s: Laying out IO file(s) (%u file(s) /"
950 " %lluMB)\n", o->name, need_extend,
953 for_each_file(td, f, i) {
954 unsigned long long old_len = -1ULL, extend_len = -1ULL;
956 if (!fio_file_extend(f))
959 assert(f->filetype == FIO_TYPE_FILE);
960 fio_file_clear_extend(f);
961 if (!o->fill_device) {
962 old_len = f->real_file_size;
963 extend_len = f->io_size + f->file_offset -
966 f->real_file_size = (f->io_size + f->file_offset);
967 err = extend_file(td, f);
971 err = __file_invalidate_cache(td, f, old_len,
975 * Shut up static checker
991 o->zone_size = o->size;
994 * iolog already set the total io size, if we read back
997 if (!o->read_iolog_file) {
999 td->total_io_size = o->io_limit * o->loops;
1001 td->total_io_size = o->size * o->loops;
1008 td_restore_runstate(td, old_state);
1011 log_err("%s: you need to specify valid offset=\n", o->name);
1013 td_restore_runstate(td, old_state);
1017 int pre_read_files(struct thread_data *td)
1022 dprint(FD_FILE, "pre_read files\n");
1024 for_each_file(td, f, i) {
1025 pre_read_file(td, f);
1031 static int __init_rand_distribution(struct thread_data *td, struct fio_file *f)
1033 unsigned int range_size, seed;
1034 unsigned long nranges;
1037 range_size = min(td->o.min_bs[DDIR_READ], td->o.min_bs[DDIR_WRITE]);
1038 fsize = min(f->real_file_size, f->io_size);
1040 nranges = (fsize + range_size - 1) / range_size;
1042 seed = jhash(f->file_name, strlen(f->file_name), 0) * td->thread_number;
1043 if (!td->o.rand_repeatable)
1044 seed = td->rand_seeds[4];
1046 if (td->o.random_distribution == FIO_RAND_DIST_ZIPF)
1047 zipf_init(&f->zipf, nranges, td->o.zipf_theta.u.f, seed);
1048 else if (td->o.random_distribution == FIO_RAND_DIST_PARETO)
1049 pareto_init(&f->zipf, nranges, td->o.pareto_h.u.f, seed);
1050 else if (td->o.random_distribution == FIO_RAND_DIST_GAUSS)
1051 gauss_init(&f->gauss, nranges, td->o.gauss_dev.u.f, seed);
1056 static int init_rand_distribution(struct thread_data *td)
1062 if (td->o.random_distribution == FIO_RAND_DIST_RANDOM)
1065 state = td_bump_runstate(td, TD_SETTING_UP);
1067 for_each_file(td, f, i)
1068 __init_rand_distribution(td, f);
1070 td_restore_runstate(td, state);
1076 * Check if the number of blocks exceeds the randomness capability of
1077 * the selected generator. Tausworthe is 32-bit, the others are fullly
1080 static int check_rand_gen_limits(struct thread_data *td, struct fio_file *f,
1083 if (blocks <= FRAND32_MAX)
1085 if (td->o.random_generator != FIO_RAND_GEN_TAUSWORTHE)
1089 * If the user hasn't specified a random generator, switch
1090 * to tausworthe64 with informational warning. If the user did
1091 * specify one, just warn.
1093 log_info("fio: file %s exceeds 32-bit tausworthe random generator.\n",
1096 if (!fio_option_is_set(&td->o, random_generator)) {
1097 log_info("fio: Switching to tausworthe64. Use the "
1098 "random_generator= option to get rid of this "
1100 td->o.random_generator = FIO_RAND_GEN_TAUSWORTHE64;
1105 * Just make this information to avoid breaking scripts.
1107 log_info("fio: Use the random_generator= option to switch to lfsr or "
1112 int init_random_map(struct thread_data *td)
1114 unsigned long long blocks;
1118 if (init_rand_distribution(td))
1123 for_each_file(td, f, i) {
1124 uint64_t fsize = min(f->real_file_size, f->io_size);
1126 blocks = fsize / (unsigned long long) td->o.rw_min_bs;
1128 if (check_rand_gen_limits(td, f, blocks))
1131 if (td->o.random_generator == FIO_RAND_GEN_LFSR) {
1134 seed = td->rand_seeds[FIO_RAND_BLOCK_OFF];
1136 if (!lfsr_init(&f->lfsr, blocks, seed, 0)) {
1137 fio_file_set_lfsr(f);
1140 } else if (!td->o.norandommap) {
1141 f->io_axmap = axmap_new(blocks);
1143 fio_file_set_axmap(f);
1146 } else if (td->o.norandommap)
1149 if (!td->o.softrandommap) {
1150 log_err("fio: failed allocating random map. If running"
1151 " a large number of jobs, try the 'norandommap'"
1152 " option or set 'softrandommap'. Or give"
1153 " a larger --alloc-size to fio.\n");
1157 log_info("fio: file %s failed allocating random map. Running "
1158 "job without.\n", f->file_name);
1164 void close_files(struct thread_data *td)
1169 for_each_file(td, f, i) {
1170 if (fio_file_open(f))
1171 td_io_close_file(td, f);
1175 void close_and_free_files(struct thread_data *td)
1180 dprint(FD_FILE, "close files\n");
1182 for_each_file(td, f, i) {
1183 if (td->o.unlink && f->filetype == FIO_TYPE_FILE) {
1184 dprint(FD_FILE, "free unlink %s\n", f->file_name);
1185 td_io_unlink_file(td, f);
1188 if (fio_file_open(f))
1189 td_io_close_file(td, f);
1191 remove_file_hash(f);
1193 if (td->o.unlink && f->filetype == FIO_TYPE_FILE) {
1194 dprint(FD_FILE, "free unlink %s\n", f->file_name);
1195 td_io_unlink_file(td, f);
1198 sfree(f->file_name);
1199 f->file_name = NULL;
1200 if (fio_file_axmap(f)) {
1201 axmap_free(f->io_axmap);
1207 td->o.filename = NULL;
1209 free(td->file_locks);
1210 td->files_index = 0;
1212 td->file_locks = NULL;
1213 td->o.file_lock_mode = FILE_LOCK_NONE;
1217 static void get_file_type(struct fio_file *f)
1221 if (!strcmp(f->file_name, "-"))
1222 f->filetype = FIO_TYPE_PIPE;
1224 f->filetype = FIO_TYPE_FILE;
1226 /* \\.\ is the device namespace in Windows, where every file is
1228 if (strncmp(f->file_name, "\\\\.\\", 4) == 0)
1229 f->filetype = FIO_TYPE_BD;
1231 if (!stat(f->file_name, &sb)) {
1232 if (S_ISBLK(sb.st_mode))
1233 f->filetype = FIO_TYPE_BD;
1234 else if (S_ISCHR(sb.st_mode))
1235 f->filetype = FIO_TYPE_CHAR;
1236 else if (S_ISFIFO(sb.st_mode))
1237 f->filetype = FIO_TYPE_PIPE;
1241 static int __is_already_allocated(const char *fname)
1243 struct flist_head *entry;
1246 if (flist_empty(&filename_list))
1249 flist_for_each(entry, &filename_list) {
1250 filename = flist_entry(entry, struct file_name, list)->filename;
1252 if (strcmp(filename, fname) == 0)
1259 static int is_already_allocated(const char *fname)
1263 fio_file_hash_lock();
1264 ret = __is_already_allocated(fname);
1265 fio_file_hash_unlock();
1269 static void set_already_allocated(const char *fname)
1271 struct file_name *fn;
1273 fn = malloc(sizeof(struct file_name));
1274 fn->filename = strdup(fname);
1276 fio_file_hash_lock();
1277 if (!__is_already_allocated(fname)) {
1278 flist_add_tail(&fn->list, &filename_list);
1281 fio_file_hash_unlock();
1290 static void free_already_allocated(void)
1292 struct flist_head *entry, *tmp;
1293 struct file_name *fn;
1295 if (flist_empty(&filename_list))
1298 fio_file_hash_lock();
1299 flist_for_each_safe(entry, tmp, &filename_list) {
1300 fn = flist_entry(entry, struct file_name, list);
1302 flist_del(&fn->list);
1306 fio_file_hash_unlock();
1309 static struct fio_file *alloc_new_file(struct thread_data *td)
1313 f = smalloc(sizeof(*f));
1315 log_err("fio: smalloc OOM\n");
1322 fio_file_reset(td, f);
1326 int add_file(struct thread_data *td, const char *fname, int numjob, int inc)
1328 int cur_files = td->files_index;
1329 char file_name[PATH_MAX];
1333 dprint(FD_FILE, "add file %s\n", fname);
1335 if (td->o.directory)
1336 len = set_name_idx(file_name, PATH_MAX, td->o.directory, numjob);
1338 sprintf(file_name + len, "%s", fname);
1340 /* clean cloned siblings using existing files */
1341 if (numjob && is_already_allocated(file_name))
1344 f = alloc_new_file(td);
1346 if (td->files_size <= td->files_index) {
1347 unsigned int new_size = td->o.nr_files + 1;
1349 dprint(FD_FILE, "resize file array to %d files\n", new_size);
1351 td->files = realloc(td->files, new_size * sizeof(f));
1352 if (td->files == NULL) {
1353 log_err("fio: realloc OOM\n");
1356 if (td->o.file_lock_mode != FILE_LOCK_NONE) {
1357 td->file_locks = realloc(td->file_locks, new_size);
1358 if (!td->file_locks) {
1359 log_err("fio: realloc OOM\n");
1362 td->file_locks[cur_files] = FILE_LOCK_NONE;
1364 td->files_size = new_size;
1366 td->files[cur_files] = f;
1367 f->fileno = cur_files;
1370 * init function, io engine may not be loaded yet
1372 if (td->io_ops && (td->io_ops->flags & FIO_DISKLESSIO))
1373 f->real_file_size = -1ULL;
1375 f->file_name = smalloc_strdup(file_name);
1376 if (!f->file_name) {
1377 log_err("fio: smalloc OOM\n");
1383 switch (td->o.file_lock_mode) {
1384 case FILE_LOCK_NONE:
1386 case FILE_LOCK_READWRITE:
1387 f->rwlock = fio_rwlock_init();
1389 case FILE_LOCK_EXCLUSIVE:
1390 f->lock = fio_mutex_init(FIO_MUTEX_UNLOCKED);
1393 log_err("fio: unknown lock mode: %d\n", td->o.file_lock_mode);
1398 if (f->filetype == FIO_TYPE_FILE)
1399 td->nr_normal_files++;
1401 set_already_allocated(file_name);
1406 dprint(FD_FILE, "file %p \"%s\" added at %d\n", f, f->file_name,
1412 int add_file_exclusive(struct thread_data *td, const char *fname)
1417 for_each_file(td, f, i) {
1418 if (!strcmp(f->file_name, fname))
1422 return add_file(td, fname, 0, 1);
1425 void get_file(struct fio_file *f)
1427 dprint(FD_FILE, "get file %s, ref=%d\n", f->file_name, f->references);
1428 assert(fio_file_open(f));
1432 int put_file(struct thread_data *td, struct fio_file *f)
1434 int f_ret = 0, ret = 0;
1436 dprint(FD_FILE, "put file %s, ref=%d\n", f->file_name, f->references);
1438 if (!fio_file_open(f)) {
1439 assert(f->fd == -1);
1443 assert(f->references);
1444 if (--f->references)
1447 if (should_fsync(td) && td->o.fsync_on_close) {
1448 f_ret = fsync(f->fd);
1453 if (td->io_ops->close_file)
1454 ret = td->io_ops->close_file(td, f);
1459 td->nr_open_files--;
1460 fio_file_clear_open(f);
1461 assert(f->fd == -1);
1465 void lock_file(struct thread_data *td, struct fio_file *f, enum fio_ddir ddir)
1467 if (!f->lock || td->o.file_lock_mode == FILE_LOCK_NONE)
1470 if (td->o.file_lock_mode == FILE_LOCK_READWRITE) {
1471 if (ddir == DDIR_READ)
1472 fio_rwlock_read(f->rwlock);
1474 fio_rwlock_write(f->rwlock);
1475 } else if (td->o.file_lock_mode == FILE_LOCK_EXCLUSIVE)
1476 fio_mutex_down(f->lock);
1478 td->file_locks[f->fileno] = td->o.file_lock_mode;
1481 void unlock_file(struct thread_data *td, struct fio_file *f)
1483 if (!f->lock || td->o.file_lock_mode == FILE_LOCK_NONE)
1486 if (td->o.file_lock_mode == FILE_LOCK_READWRITE)
1487 fio_rwlock_unlock(f->rwlock);
1488 else if (td->o.file_lock_mode == FILE_LOCK_EXCLUSIVE)
1489 fio_mutex_up(f->lock);
1491 td->file_locks[f->fileno] = FILE_LOCK_NONE;
1494 void unlock_file_all(struct thread_data *td, struct fio_file *f)
1496 if (td->o.file_lock_mode == FILE_LOCK_NONE || !td->file_locks)
1498 if (td->file_locks[f->fileno] != FILE_LOCK_NONE)
1502 static int recurse_dir(struct thread_data *td, const char *dirname)
1508 D = opendir(dirname);
1510 char buf[FIO_VERROR_SIZE];
1512 snprintf(buf, FIO_VERROR_SIZE, "opendir(%s)", dirname);
1513 td_verror(td, errno, buf);
1517 while ((dir = readdir(D)) != NULL) {
1518 char full_path[PATH_MAX];
1521 if (!strcmp(dir->d_name, ".") || !strcmp(dir->d_name, ".."))
1524 sprintf(full_path, "%s%s%s", dirname, FIO_OS_PATH_SEPARATOR, dir->d_name);
1526 if (lstat(full_path, &sb) == -1) {
1527 if (errno != ENOENT) {
1528 td_verror(td, errno, "stat");
1534 if (S_ISREG(sb.st_mode)) {
1535 add_file(td, full_path, 0, 1);
1538 if (!S_ISDIR(sb.st_mode))
1541 ret = recurse_dir(td, full_path);
1550 int add_dir_files(struct thread_data *td, const char *path)
1552 int ret = recurse_dir(td, path);
1555 log_info("fio: opendir added %d files\n", td->o.nr_files);
1560 void dup_files(struct thread_data *td, struct thread_data *org)
1565 dprint(FD_FILE, "dup files: %d\n", org->files_index);
1570 td->files = malloc(org->files_index * sizeof(f));
1572 if (td->o.file_lock_mode != FILE_LOCK_NONE)
1573 td->file_locks = malloc(org->files_index);
1575 for_each_file(org, f, i) {
1576 struct fio_file *__f;
1578 __f = alloc_new_file(td);
1581 __f->file_name = smalloc_strdup(f->file_name);
1582 if (!__f->file_name) {
1583 log_err("fio: smalloc OOM\n");
1587 __f->filetype = f->filetype;
1590 if (td->o.file_lock_mode == FILE_LOCK_EXCLUSIVE)
1591 __f->lock = f->lock;
1592 else if (td->o.file_lock_mode == FILE_LOCK_READWRITE)
1593 __f->rwlock = f->rwlock;
1600 * Returns the index that matches the filename, or -1 if not there
1602 int get_fileno(struct thread_data *td, const char *fname)
1607 for_each_file(td, f, i)
1608 if (!strcmp(f->file_name, fname))
1615 * For log usage, where we add/open/close files automatically
1617 void free_release_files(struct thread_data *td)
1621 td->o.open_files = 0;
1622 td->files_index = 0;
1623 td->nr_normal_files = 0;
1626 void fio_file_reset(struct thread_data *td, struct fio_file *f)
1630 for (i = 0; i < DDIR_RWDIR_CNT; i++) {
1631 f->last_pos[i] = f->file_offset;
1632 f->last_start[i] = -1ULL;
1635 if (fio_file_axmap(f))
1636 axmap_reset(f->io_axmap);
1637 else if (fio_file_lfsr(f))
1638 lfsr_reset(&f->lfsr, td->rand_seeds[FIO_RAND_BLOCK_OFF]);
1641 int fio_files_done(struct thread_data *td)
1646 for_each_file(td, f, i)
1647 if (!fio_file_done(f))
1653 /* free memory used in initialization phase only */
1654 void filesetup_mem_free(void)
1656 free_already_allocated();