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_ioengine_flagged(td, FIO_NOEXTEND)))
57 if (td_write(td) && !td->o.overwrite && !td->o.file_append)
60 if (unlink_file || new_layout) {
63 dprint(FD_FILE, "layout unlink %s\n", f->file_name);
65 ret = td_io_unlink_file(td, f);
66 if (ret != 0 && ret != ENOENT) {
67 td_verror(td, errno, "unlink");
73 if (td->o.allow_create)
82 dprint(FD_FILE, "open file %s, flags %x\n", f->file_name, flags);
83 f->fd = open(f->file_name, flags, 0644);
87 if (err == ENOENT && !td->o.allow_create)
88 log_err("fio: file creation disallowed by "
89 "allow_file_create=0\n");
91 td_verror(td, err, "open");
95 #ifdef CONFIG_POSIX_FALLOCATE
96 if (!td->o.fill_device) {
97 switch (td->o.fallocate_mode) {
98 case FIO_FALLOCATE_NONE:
100 case FIO_FALLOCATE_POSIX:
101 dprint(FD_FILE, "posix_fallocate file %s size %llu\n",
103 (unsigned long long) f->real_file_size);
105 r = posix_fallocate(f->fd, 0, f->real_file_size);
107 log_err("fio: posix_fallocate fails: %s\n",
111 #ifdef CONFIG_LINUX_FALLOCATE
112 case FIO_FALLOCATE_KEEP_SIZE:
114 "fallocate(FALLOC_FL_KEEP_SIZE) "
115 "file %s size %llu\n", f->file_name,
116 (unsigned long long) f->real_file_size);
118 r = fallocate(f->fd, FALLOC_FL_KEEP_SIZE, 0,
121 td_verror(td, errno, "fallocate");
124 #endif /* CONFIG_LINUX_FALLOCATE */
126 log_err("fio: unknown fallocate mode: %d\n",
127 td->o.fallocate_mode);
131 #endif /* CONFIG_POSIX_FALLOCATE */
137 * The size will be -1ULL when fill_device is used, so don't truncate
138 * or fallocate this file, just write it
140 if (!td->o.fill_device) {
141 dprint(FD_FILE, "truncate file %s, size %llu\n", f->file_name,
142 (unsigned long long) f->real_file_size);
143 if (ftruncate(f->fd, f->real_file_size) == -1) {
144 if (errno != EFBIG) {
145 td_verror(td, errno, "ftruncate");
151 b = malloc(td->o.max_bs[DDIR_WRITE]);
153 left = f->real_file_size;
154 while (left && !td->terminate) {
155 bs = td->o.max_bs[DDIR_WRITE];
159 fill_io_buffer(td, b, bs, bs);
161 r = write(f->fd, b, bs);
171 if (td->o.fill_device)
173 log_info("fio: ENOSPC on laying out "
177 td_verror(td, errno, "write");
179 td_verror(td, EIO, "write");
186 dprint(FD_FILE, "terminate unlink %s\n", f->file_name);
187 td_io_unlink_file(td, f);
188 } else if (td->o.create_fsync) {
189 if (fsync(f->fd) < 0) {
190 td_verror(td, errno, "fsync");
194 if (td->o.fill_device && !td_write(td)) {
195 fio_file_clear_size_known(f);
196 if (td_io_get_file_size(td, f))
198 if (f->io_size > f->real_file_size)
199 f->io_size = f->real_file_size;
213 static int pre_read_file(struct thread_data *td, struct fio_file *f)
215 int ret = 0, r, did_open = 0, old_runstate;
216 unsigned long long left;
220 if (td_ioengine_flagged(td, FIO_PIPEIO))
223 if (!fio_file_open(f)) {
224 if (td->io_ops->open_file(td, f)) {
225 log_err("fio: cannot pre-read, failed to open file\n");
231 old_runstate = td_bump_runstate(td, TD_PRE_READING);
233 bs = td->o.max_bs[DDIR_READ];
237 if (lseek(f->fd, f->file_offset, SEEK_SET) < 0) {
238 td_verror(td, errno, "lseek");
239 log_err("fio: failed to lseek pre-read file\n");
246 while (left && !td->terminate) {
250 r = read(f->fd, b, bs);
256 td_verror(td, EIO, "pre_read");
262 td_restore_runstate(td, old_runstate);
265 td->io_ops->close_file(td, f);
271 unsigned long long get_rand_file_size(struct thread_data *td)
273 unsigned long long ret, sized;
277 frand_max = rand_max(&td->file_size_state);
278 r = __rand(&td->file_size_state);
279 sized = td->o.file_size_high - td->o.file_size_low;
280 ret = (unsigned long long) ((double) sized * (r / (frand_max + 1.0)));
281 ret += td->o.file_size_low;
282 ret -= (ret % td->o.rw_min_bs);
286 static int file_size(struct thread_data *td, struct fio_file *f)
290 if (stat(f->file_name, &st) == -1) {
291 td_verror(td, errno, "fstat");
295 f->real_file_size = st.st_size;
299 static int bdev_size(struct thread_data *td, struct fio_file *f)
301 unsigned long long bytes = 0;
304 if (td->io_ops->open_file(td, f)) {
305 log_err("fio: failed opening blockdev %s for size check\n",
310 r = blockdev_size(f, &bytes);
312 td_verror(td, r, "blockdev_size");
317 log_err("%s: zero sized block device?\n", f->file_name);
321 f->real_file_size = bytes;
322 td->io_ops->close_file(td, f);
325 td->io_ops->close_file(td, f);
329 static int char_size(struct thread_data *td, struct fio_file *f)
331 #ifdef FIO_HAVE_CHARDEV_SIZE
332 unsigned long long bytes = 0;
335 if (td->io_ops->open_file(td, f)) {
336 log_err("fio: failed opening chardev %s for size check\n",
341 r = chardev_size(f, &bytes);
343 td_verror(td, r, "chardev_size");
348 log_err("%s: zero sized char device?\n", f->file_name);
352 f->real_file_size = bytes;
353 td->io_ops->close_file(td, f);
356 td->io_ops->close_file(td, f);
359 f->real_file_size = -1ULL;
364 static int get_file_size(struct thread_data *td, struct fio_file *f)
368 if (fio_file_size_known(f))
371 if (f->filetype == FIO_TYPE_FILE)
372 ret = file_size(td, f);
373 else if (f->filetype == FIO_TYPE_BLOCK)
374 ret = bdev_size(td, f);
375 else if (f->filetype == FIO_TYPE_CHAR)
376 ret = char_size(td, f);
378 f->real_file_size = -1;
379 log_info("%s: failed to get file size of %s\n", td->o.name,
381 return 1; /* avoid offset extends end error message */
388 * ->file_offset normally hasn't been initialized yet, so this
389 * is basically always false unless ->real_file_size is -1, but
390 * if ->real_file_size is -1 this message doesn't make sense.
391 * As a result, this message is basically useless.
393 if (f->file_offset > f->real_file_size) {
394 log_err("%s: offset extends end (%llu > %llu)\n", td->o.name,
395 (unsigned long long) f->file_offset,
396 (unsigned long long) f->real_file_size);
400 fio_file_set_size_known(f);
404 static int __file_invalidate_cache(struct thread_data *td, struct fio_file *f,
405 unsigned long long off,
406 unsigned long long len)
408 int errval = 0, ret = 0;
417 off = f->file_offset;
419 if (len == -1ULL || off == -1ULL)
422 dprint(FD_IO, "invalidate cache %s: %llu/%llu\n", f->file_name, off,
425 if (td->io_ops->invalidate) {
426 ret = td->io_ops->invalidate(td, f);
429 } else if (f->filetype == FIO_TYPE_FILE) {
430 ret = posix_fadvise(f->fd, off, len, POSIX_FADV_DONTNEED);
433 } else if (f->filetype == FIO_TYPE_BLOCK) {
436 ret = blockdev_invalidate_cache(f);
437 while (ret < 0 && errno == EAGAIN && retry_count++ < 25) {
439 * Linux multipath devices reject ioctl while
440 * the maps are being updated. That window can
441 * last tens of milliseconds; we'll try up to
442 * a quarter of a second.
445 ret = blockdev_invalidate_cache(f);
447 if (ret < 0 && errno == EACCES && geteuid()) {
449 log_err("fio: only root may flush block "
450 "devices. Cache flush bypassed!\n");
457 } else if (f->filetype == FIO_TYPE_CHAR || f->filetype == FIO_TYPE_PIPE)
461 * Cache flushing isn't a fatal condition, and we know it will
462 * happen on some platforms where we don't have the proper
463 * function to flush eg block device caches. So just warn and
464 * continue on our way.
467 log_info("fio: cache invalidation of %s failed: %s\n", f->file_name, strerror(errval));
473 int file_invalidate_cache(struct thread_data *td, struct fio_file *f)
475 if (!fio_file_open(f))
478 return __file_invalidate_cache(td, f, -1ULL, -1ULL);
481 int generic_close_file(struct thread_data fio_unused *td, struct fio_file *f)
485 dprint(FD_FILE, "fd close %s\n", f->file_name);
489 if (close(f->fd) < 0)
494 if (f->shadow_fd != -1) {
503 int file_lookup_open(struct fio_file *f, int flags)
505 struct fio_file *__f;
508 __f = lookup_file_hash(f->file_name);
510 dprint(FD_FILE, "found file in hash %s\n", f->file_name);
514 dprint(FD_FILE, "file not found in hash %s\n", f->file_name);
522 f->fd = open(f->file_name, flags, 0600);
526 static int file_close_shadow_fds(struct thread_data *td)
532 for_each_file(td, f, i) {
533 if (f->shadow_fd == -1)
544 int generic_open_file(struct thread_data *td, struct fio_file *f)
550 dprint(FD_FILE, "fd open %s\n", f->file_name);
552 if (!strcmp(f->file_name, "-")) {
554 log_err("fio: can't read/write to stdin/out\n");
560 * move output logging to stderr, if we are writing to stdout
569 flags |= OS_O_DIRECT;
572 td_verror(td, EINVAL, "OS does not support atomic IO");
575 flags |= OS_O_DIRECT | FIO_O_ATOMIC;
579 if (td->o.create_on_open && td->o.allow_create)
582 if (f->filetype != FIO_TYPE_FILE)
583 flags |= FIO_O_NOATIME;
590 if (f->filetype == FIO_TYPE_FILE && td->o.allow_create)
594 f->fd = dup(STDOUT_FILENO);
596 from_hash = file_lookup_open(f, flags);
597 } else if (td_read(td)) {
598 if (f->filetype == FIO_TYPE_CHAR && !read_only)
604 f->fd = dup(STDIN_FILENO);
606 from_hash = file_lookup_open(f, flags);
609 from_hash = file_lookup_open(f, flags);
613 char buf[FIO_VERROR_SIZE];
616 if (__e == EPERM && (flags & FIO_O_NOATIME)) {
617 flags &= ~FIO_O_NOATIME;
620 if (__e == EMFILE && file_close_shadow_fds(td))
623 snprintf(buf, sizeof(buf), "open(%s)", f->file_name);
625 if (__e == EINVAL && (flags & OS_O_DIRECT)) {
626 log_err("fio: looks like your file system does not " \
627 "support direct=1/buffered=0\n");
630 td_verror(td, __e, buf);
634 if (!from_hash && f->fd != -1) {
635 if (add_file_hash(f)) {
639 * Stash away descriptor for later close. This is to
640 * work-around a "feature" on Linux, where a close of
641 * an fd that has been opened for write will trigger
642 * udev to call blkid to check partitions, fs id, etc.
643 * That pollutes the device cache, which can slow down
644 * unbuffered accesses.
646 if (f->shadow_fd == -1)
647 f->shadow_fd = f->fd;
650 * OK to ignore, we haven't done anything
653 ret = generic_close_file(td, f);
662 int generic_get_file_size(struct thread_data *td, struct fio_file *f)
664 return get_file_size(td, f);
668 * open/close all files, so that ->real_file_size gets set
670 static int get_file_sizes(struct thread_data *td)
676 for_each_file(td, f, i) {
677 dprint(FD_FILE, "get file size for %p/%d/%p\n", f, i,
680 if (td_io_get_file_size(td, f)) {
681 if (td->error != ENOENT) {
682 log_err("%s\n", td->verror);
689 if (f->real_file_size == -1ULL && td->o.size)
690 f->real_file_size = td->o.size / td->o.nr_files;
697 struct flist_head list;
704 * Get free number of bytes for each file on each unique mount.
706 static unsigned long long get_fs_free_counts(struct thread_data *td)
708 struct flist_head *n, *tmp;
709 unsigned long long ret = 0;
710 struct fio_mount *fm;
715 for_each_file(td, f, i) {
719 if (f->filetype == FIO_TYPE_BLOCK || f->filetype == FIO_TYPE_CHAR) {
720 if (f->real_file_size != -1ULL)
721 ret += f->real_file_size;
723 } else if (f->filetype != FIO_TYPE_FILE)
727 strncpy(buf, f->file_name, 255);
729 if (stat(buf, &sb) < 0) {
733 if (stat(buf, &sb) < 0)
738 flist_for_each(n, &list) {
739 fm = flist_entry(n, struct fio_mount, list);
740 if (fm->key == sb.st_dev)
749 fm = calloc(1, sizeof(*fm));
750 strncpy(fm->__base, buf, sizeof(fm->__base) - 1);
751 fm->base = basename(fm->__base);
753 flist_add(&fm->list, &list);
756 flist_for_each_safe(n, tmp, &list) {
757 unsigned long long sz;
759 fm = flist_entry(n, struct fio_mount, list);
760 flist_del(&fm->list);
762 sz = get_fs_free_size(fm->base);
763 if (sz && sz != -1ULL)
772 uint64_t get_start_offset(struct thread_data *td, struct fio_file *f)
774 struct thread_options *o = &td->o;
776 if (o->file_append && f->filetype == FIO_TYPE_FILE)
777 return f->real_file_size;
779 return td->o.start_offset +
780 td->subjob_number * td->o.offset_increment;
784 * Open the files and setup files sizes, creating files if necessary.
786 int setup_files(struct thread_data *td)
788 unsigned long long total_size, extend_size;
789 struct thread_options *o = &td->o;
791 unsigned int i, nr_fs_extra = 0;
792 int err = 0, need_extend;
794 const unsigned int bs = td_min_bs(td);
797 dprint(FD_FILE, "setup files\n");
799 old_state = td_bump_runstate(td, TD_SETTING_UP);
801 if (o->read_iolog_file)
805 * if ioengine defines a setup() method, it's responsible for
806 * opening the files and setting f->real_file_size to indicate
807 * the valid range for that file.
809 if (td->io_ops->setup)
810 err = td->io_ops->setup(td);
812 err = get_file_sizes(td);
818 * check sizes. if the files/devices do not exist and the size
819 * isn't passed to fio, abort.
822 for_each_file(td, f, i) {
824 if (f->real_file_size == -1ULL)
827 total_size += f->real_file_size;
831 td->fill_device_size = get_fs_free_counts(td);
834 * device/file sizes are zero and no size given, punt
836 if ((!total_size || total_size == -1ULL) && !o->size &&
837 !td_ioengine_flagged(td, FIO_NOIO) && !o->fill_device &&
838 !(o->nr_files && (o->file_size_low || o->file_size_high))) {
839 log_err("%s: you need to specify size=\n", o->name);
840 td_verror(td, EINVAL, "total_file_size");
845 * Calculate per-file size and potential extra size for the
846 * first files, if needed.
848 if (!o->file_size_low && o->nr_files) {
851 fs = o->size / o->nr_files;
852 all_fs = fs * o->nr_files;
854 if (all_fs < o->size)
855 nr_fs_extra = (o->size - all_fs) / bs;
859 * now file sizes are known, so we can set ->io_size. if size= is
860 * not given, ->io_size is just equal to ->real_file_size. if size
861 * is given, ->io_size is size / nr_files.
863 extend_size = total_size = 0;
865 for_each_file(td, f, i) {
866 f->file_offset = get_start_offset(td, f);
868 if (!o->file_size_low) {
870 * no file size range given, file size is equal to
871 * total size divided by number of files. If that is
872 * zero, set it to the real file size. If the size
873 * doesn't divide nicely with the min blocksize,
874 * make the first files bigger.
883 f->io_size = f->real_file_size - f->file_offset;
884 } else if (f->real_file_size < o->file_size_low ||
885 f->real_file_size > o->file_size_high) {
886 if (f->file_offset > o->file_size_low)
889 * file size given. if it's fixed, use that. if it's a
890 * range, generate a random size in-between.
892 if (o->file_size_low == o->file_size_high)
893 f->io_size = o->file_size_low - f->file_offset;
895 f->io_size = get_rand_file_size(td)
899 f->io_size = f->real_file_size - f->file_offset;
901 if (f->io_size == -1ULL)
904 if (o->size_percent) {
905 f->io_size = (f->io_size * o->size_percent) / 100;
906 f->io_size -= (f->io_size % td_min_bs(td));
908 total_size += f->io_size;
911 if (f->filetype == FIO_TYPE_FILE &&
912 (f->io_size + f->file_offset) > f->real_file_size &&
913 !td_ioengine_flagged(td, FIO_DISKLESSIO)) {
914 if (!o->create_on_open) {
916 extend_size += (f->io_size + f->file_offset);
918 f->real_file_size = f->io_size + f->file_offset;
919 fio_file_set_extend(f);
923 if (td->o.block_error_hist) {
926 assert(td->o.nr_files == 1); /* checked in fixup_options */
928 len = f->io_size / td->o.bs[DDIR_TRIM];
929 if (len > MAX_NR_BLOCK_INFOS || len <= 0) {
930 log_err("fio: cannot calculate block histogram with "
931 "%d trim blocks, maximum %d\n",
932 len, MAX_NR_BLOCK_INFOS);
933 td_verror(td, EINVAL, "block_error_hist");
937 td->ts.nr_block_infos = len;
938 for (i = 0; i < len; i++)
939 td->ts.block_infos[i] =
940 BLOCK_INFO(0, BLOCK_STATE_UNINIT);
942 td->ts.nr_block_infos = 0;
944 if (!o->size || (total_size && o->size > total_size))
945 o->size = total_size;
947 if (o->size < td_min_bs(td)) {
948 log_err("fio: blocksize too large for data set\n");
953 * See if we need to extend some files
957 if (output_format & FIO_OUTPUT_NORMAL)
958 log_info("%s: Laying out IO file(s) (%u file(s) / %lluMiB)\n",
959 o->name, need_extend, extend_size >> 20);
961 for_each_file(td, f, i) {
962 unsigned long long old_len = -1ULL, extend_len = -1ULL;
964 if (!fio_file_extend(f))
967 assert(f->filetype == FIO_TYPE_FILE);
968 fio_file_clear_extend(f);
969 if (!o->fill_device) {
970 old_len = f->real_file_size;
971 extend_len = f->io_size + f->file_offset -
974 f->real_file_size = (f->io_size + f->file_offset);
975 err = extend_file(td, f);
979 err = __file_invalidate_cache(td, f, old_len,
983 * Shut up static checker
999 o->zone_size = o->size;
1002 * iolog already set the total io size, if we read back
1005 if (!o->read_iolog_file) {
1007 td->total_io_size = o->io_size * o->loops;
1009 td->total_io_size = o->size * o->loops;
1016 td_restore_runstate(td, old_state);
1019 log_err("%s: you need to specify valid offset=\n", o->name);
1021 td_restore_runstate(td, old_state);
1025 int pre_read_files(struct thread_data *td)
1030 dprint(FD_FILE, "pre_read files\n");
1032 for_each_file(td, f, i) {
1033 pre_read_file(td, f);
1039 static int __init_rand_distribution(struct thread_data *td, struct fio_file *f)
1041 unsigned int range_size, seed;
1042 unsigned long nranges;
1045 range_size = min(td->o.min_bs[DDIR_READ], td->o.min_bs[DDIR_WRITE]);
1046 fsize = min(f->real_file_size, f->io_size);
1048 nranges = (fsize + range_size - 1) / range_size;
1050 seed = jhash(f->file_name, strlen(f->file_name), 0) * td->thread_number;
1051 if (!td->o.rand_repeatable)
1052 seed = td->rand_seeds[4];
1054 if (td->o.random_distribution == FIO_RAND_DIST_ZIPF)
1055 zipf_init(&f->zipf, nranges, td->o.zipf_theta.u.f, seed);
1056 else if (td->o.random_distribution == FIO_RAND_DIST_PARETO)
1057 pareto_init(&f->zipf, nranges, td->o.pareto_h.u.f, seed);
1058 else if (td->o.random_distribution == FIO_RAND_DIST_GAUSS)
1059 gauss_init(&f->gauss, nranges, td->o.gauss_dev.u.f, seed);
1064 static int init_rand_distribution(struct thread_data *td)
1070 if (td->o.random_distribution == FIO_RAND_DIST_RANDOM)
1073 state = td_bump_runstate(td, TD_SETTING_UP);
1075 for_each_file(td, f, i)
1076 __init_rand_distribution(td, f);
1078 td_restore_runstate(td, state);
1084 * Check if the number of blocks exceeds the randomness capability of
1085 * the selected generator. Tausworthe is 32-bit, the others are fullly
1088 static int check_rand_gen_limits(struct thread_data *td, struct fio_file *f,
1091 if (blocks <= FRAND32_MAX)
1093 if (td->o.random_generator != FIO_RAND_GEN_TAUSWORTHE)
1097 * If the user hasn't specified a random generator, switch
1098 * to tausworthe64 with informational warning. If the user did
1099 * specify one, just warn.
1101 log_info("fio: file %s exceeds 32-bit tausworthe random generator.\n",
1104 if (!fio_option_is_set(&td->o, random_generator)) {
1105 log_info("fio: Switching to tausworthe64. Use the "
1106 "random_generator= option to get rid of this "
1108 td->o.random_generator = FIO_RAND_GEN_TAUSWORTHE64;
1113 * Just make this information to avoid breaking scripts.
1115 log_info("fio: Use the random_generator= option to switch to lfsr or "
1120 int init_random_map(struct thread_data *td)
1122 unsigned long long blocks;
1126 if (init_rand_distribution(td))
1131 for_each_file(td, f, i) {
1132 uint64_t fsize = min(f->real_file_size, f->io_size);
1134 blocks = fsize / (unsigned long long) td->o.rw_min_bs;
1136 if (check_rand_gen_limits(td, f, blocks))
1139 if (td->o.random_generator == FIO_RAND_GEN_LFSR) {
1142 seed = td->rand_seeds[FIO_RAND_BLOCK_OFF];
1144 if (!lfsr_init(&f->lfsr, blocks, seed, 0)) {
1145 fio_file_set_lfsr(f);
1148 } else if (!td->o.norandommap) {
1149 f->io_axmap = axmap_new(blocks);
1151 fio_file_set_axmap(f);
1154 } else if (td->o.norandommap)
1157 if (!td->o.softrandommap) {
1158 log_err("fio: failed allocating random map. If running"
1159 " a large number of jobs, try the 'norandommap'"
1160 " option or set 'softrandommap'. Or give"
1161 " a larger --alloc-size to fio.\n");
1165 log_info("fio: file %s failed allocating random map. Running "
1166 "job without.\n", f->file_name);
1172 void close_files(struct thread_data *td)
1177 for_each_file(td, f, i) {
1178 if (fio_file_open(f))
1179 td_io_close_file(td, f);
1183 void close_and_free_files(struct thread_data *td)
1188 dprint(FD_FILE, "close files\n");
1190 for_each_file(td, f, i) {
1191 if (td->o.unlink && f->filetype == FIO_TYPE_FILE) {
1192 dprint(FD_FILE, "free unlink %s\n", f->file_name);
1193 td_io_unlink_file(td, f);
1196 if (fio_file_open(f))
1197 td_io_close_file(td, f);
1199 remove_file_hash(f);
1201 if (td->o.unlink && f->filetype == FIO_TYPE_FILE) {
1202 dprint(FD_FILE, "free unlink %s\n", f->file_name);
1203 td_io_unlink_file(td, f);
1206 sfree(f->file_name);
1207 f->file_name = NULL;
1208 if (fio_file_axmap(f)) {
1209 axmap_free(f->io_axmap);
1215 td->o.filename = NULL;
1217 free(td->file_locks);
1218 td->files_index = 0;
1220 td->file_locks = NULL;
1221 td->o.file_lock_mode = FILE_LOCK_NONE;
1225 static void get_file_type(struct fio_file *f)
1229 if (!strcmp(f->file_name, "-"))
1230 f->filetype = FIO_TYPE_PIPE;
1232 f->filetype = FIO_TYPE_FILE;
1235 /* \\.\ is the device namespace in Windows, where every file is
1237 if (strncmp(f->file_name, "\\\\.\\", 4) == 0)
1238 f->filetype = FIO_TYPE_BLOCK;
1241 if (!stat(f->file_name, &sb)) {
1242 if (S_ISBLK(sb.st_mode))
1243 f->filetype = FIO_TYPE_BLOCK;
1244 else if (S_ISCHR(sb.st_mode))
1245 f->filetype = FIO_TYPE_CHAR;
1246 else if (S_ISFIFO(sb.st_mode))
1247 f->filetype = FIO_TYPE_PIPE;
1251 static bool __is_already_allocated(const char *fname, bool set)
1253 struct flist_head *entry;
1256 ret = file_bloom_exists(fname, set);
1260 flist_for_each(entry, &filename_list) {
1261 struct file_name *fn;
1263 fn = flist_entry(entry, struct file_name, list);
1265 if (!strcmp(fn->filename, fname))
1272 static bool is_already_allocated(const char *fname)
1276 fio_file_hash_lock();
1277 ret = __is_already_allocated(fname, false);
1278 fio_file_hash_unlock();
1283 static void set_already_allocated(const char *fname)
1285 struct file_name *fn;
1287 fn = malloc(sizeof(struct file_name));
1288 fn->filename = strdup(fname);
1290 fio_file_hash_lock();
1291 if (!__is_already_allocated(fname, true)) {
1292 flist_add_tail(&fn->list, &filename_list);
1295 fio_file_hash_unlock();
1303 static void free_already_allocated(void)
1305 struct flist_head *entry, *tmp;
1306 struct file_name *fn;
1308 if (flist_empty(&filename_list))
1311 fio_file_hash_lock();
1312 flist_for_each_safe(entry, tmp, &filename_list) {
1313 fn = flist_entry(entry, struct file_name, list);
1315 flist_del(&fn->list);
1319 fio_file_hash_unlock();
1322 static struct fio_file *alloc_new_file(struct thread_data *td)
1326 f = smalloc(sizeof(*f));
1334 fio_file_reset(td, f);
1338 bool exists_and_not_regfile(const char *filename)
1342 if (lstat(filename, &sb) == -1)
1345 #ifndef WIN32 /* NOT Windows */
1346 if (S_ISREG(sb.st_mode))
1349 /* \\.\ is the device namespace in Windows, where every file
1350 * is a device node */
1351 if (S_ISREG(sb.st_mode) && strncmp(filename, "\\\\.\\", 4) != 0)
1358 int add_file(struct thread_data *td, const char *fname, int numjob, int inc)
1360 int cur_files = td->files_index;
1361 char file_name[PATH_MAX];
1365 dprint(FD_FILE, "add file %s\n", fname);
1367 if (td->o.directory)
1368 len = set_name_idx(file_name, PATH_MAX, td->o.directory, numjob,
1369 td->o.unique_filename);
1371 sprintf(file_name + len, "%s", fname);
1373 /* clean cloned siblings using existing files */
1374 if (numjob && is_already_allocated(file_name) &&
1375 !exists_and_not_regfile(fname))
1378 f = alloc_new_file(td);
1380 if (td->files_size <= td->files_index) {
1381 unsigned int new_size = td->o.nr_files + 1;
1383 dprint(FD_FILE, "resize file array to %d files\n", new_size);
1385 td->files = realloc(td->files, new_size * sizeof(f));
1386 if (td->files == NULL) {
1387 log_err("fio: realloc OOM\n");
1390 if (td->o.file_lock_mode != FILE_LOCK_NONE) {
1391 td->file_locks = realloc(td->file_locks, new_size);
1392 if (!td->file_locks) {
1393 log_err("fio: realloc OOM\n");
1396 td->file_locks[cur_files] = FILE_LOCK_NONE;
1398 td->files_size = new_size;
1400 td->files[cur_files] = f;
1401 f->fileno = cur_files;
1404 * init function, io engine may not be loaded yet
1406 if (td->io_ops && td_ioengine_flagged(td, FIO_DISKLESSIO))
1407 f->real_file_size = -1ULL;
1409 f->file_name = smalloc_strdup(file_name);
1415 switch (td->o.file_lock_mode) {
1416 case FILE_LOCK_NONE:
1418 case FILE_LOCK_READWRITE:
1419 f->rwlock = fio_rwlock_init();
1421 case FILE_LOCK_EXCLUSIVE:
1422 f->lock = fio_mutex_init(FIO_MUTEX_UNLOCKED);
1425 log_err("fio: unknown lock mode: %d\n", td->o.file_lock_mode);
1430 if (f->filetype == FIO_TYPE_FILE)
1431 td->nr_normal_files++;
1433 set_already_allocated(file_name);
1438 dprint(FD_FILE, "file %p \"%s\" added at %d\n", f, f->file_name,
1444 int add_file_exclusive(struct thread_data *td, const char *fname)
1449 for_each_file(td, f, i) {
1450 if (!strcmp(f->file_name, fname))
1454 return add_file(td, fname, 0, 1);
1457 void get_file(struct fio_file *f)
1459 dprint(FD_FILE, "get file %s, ref=%d\n", f->file_name, f->references);
1460 assert(fio_file_open(f));
1464 int put_file(struct thread_data *td, struct fio_file *f)
1466 int f_ret = 0, ret = 0;
1468 dprint(FD_FILE, "put file %s, ref=%d\n", f->file_name, f->references);
1470 if (!fio_file_open(f)) {
1471 assert(f->fd == -1);
1475 assert(f->references);
1476 if (--f->references)
1479 if (should_fsync(td) && td->o.fsync_on_close) {
1480 f_ret = fsync(f->fd);
1485 if (td->io_ops->close_file)
1486 ret = td->io_ops->close_file(td, f);
1491 td->nr_open_files--;
1492 fio_file_clear_open(f);
1493 assert(f->fd == -1);
1497 void lock_file(struct thread_data *td, struct fio_file *f, enum fio_ddir ddir)
1499 if (!f->lock || td->o.file_lock_mode == FILE_LOCK_NONE)
1502 if (td->o.file_lock_mode == FILE_LOCK_READWRITE) {
1503 if (ddir == DDIR_READ)
1504 fio_rwlock_read(f->rwlock);
1506 fio_rwlock_write(f->rwlock);
1507 } else if (td->o.file_lock_mode == FILE_LOCK_EXCLUSIVE)
1508 fio_mutex_down(f->lock);
1510 td->file_locks[f->fileno] = td->o.file_lock_mode;
1513 void unlock_file(struct thread_data *td, struct fio_file *f)
1515 if (!f->lock || td->o.file_lock_mode == FILE_LOCK_NONE)
1518 if (td->o.file_lock_mode == FILE_LOCK_READWRITE)
1519 fio_rwlock_unlock(f->rwlock);
1520 else if (td->o.file_lock_mode == FILE_LOCK_EXCLUSIVE)
1521 fio_mutex_up(f->lock);
1523 td->file_locks[f->fileno] = FILE_LOCK_NONE;
1526 void unlock_file_all(struct thread_data *td, struct fio_file *f)
1528 if (td->o.file_lock_mode == FILE_LOCK_NONE || !td->file_locks)
1530 if (td->file_locks[f->fileno] != FILE_LOCK_NONE)
1534 static int recurse_dir(struct thread_data *td, const char *dirname)
1540 D = opendir(dirname);
1542 char buf[FIO_VERROR_SIZE];
1544 snprintf(buf, FIO_VERROR_SIZE, "opendir(%s)", dirname);
1545 td_verror(td, errno, buf);
1549 while ((dir = readdir(D)) != NULL) {
1550 char full_path[PATH_MAX];
1553 if (!strcmp(dir->d_name, ".") || !strcmp(dir->d_name, ".."))
1556 sprintf(full_path, "%s%s%s", dirname, FIO_OS_PATH_SEPARATOR, dir->d_name);
1558 if (lstat(full_path, &sb) == -1) {
1559 if (errno != ENOENT) {
1560 td_verror(td, errno, "stat");
1566 if (S_ISREG(sb.st_mode)) {
1567 add_file(td, full_path, 0, 1);
1570 if (!S_ISDIR(sb.st_mode))
1573 ret = recurse_dir(td, full_path);
1582 int add_dir_files(struct thread_data *td, const char *path)
1584 int ret = recurse_dir(td, path);
1587 log_info("fio: opendir added %d files\n", td->o.nr_files);
1592 void dup_files(struct thread_data *td, struct thread_data *org)
1597 dprint(FD_FILE, "dup files: %d\n", org->files_index);
1602 td->files = malloc(org->files_index * sizeof(f));
1604 if (td->o.file_lock_mode != FILE_LOCK_NONE)
1605 td->file_locks = malloc(org->files_index);
1607 for_each_file(org, f, i) {
1608 struct fio_file *__f;
1610 __f = alloc_new_file(td);
1613 __f->file_name = smalloc_strdup(f->file_name);
1614 if (!__f->file_name)
1617 __f->filetype = f->filetype;
1620 if (td->o.file_lock_mode == FILE_LOCK_EXCLUSIVE)
1621 __f->lock = f->lock;
1622 else if (td->o.file_lock_mode == FILE_LOCK_READWRITE)
1623 __f->rwlock = f->rwlock;
1630 * Returns the index that matches the filename, or -1 if not there
1632 int get_fileno(struct thread_data *td, const char *fname)
1637 for_each_file(td, f, i)
1638 if (!strcmp(f->file_name, fname))
1645 * For log usage, where we add/open/close files automatically
1647 void free_release_files(struct thread_data *td)
1651 td->o.open_files = 0;
1652 td->files_index = 0;
1653 td->nr_normal_files = 0;
1656 void fio_file_reset(struct thread_data *td, struct fio_file *f)
1660 for (i = 0; i < DDIR_RWDIR_CNT; i++) {
1661 f->last_pos[i] = f->file_offset;
1662 f->last_start[i] = -1ULL;
1665 if (fio_file_axmap(f))
1666 axmap_reset(f->io_axmap);
1667 else if (fio_file_lfsr(f))
1668 lfsr_reset(&f->lfsr, td->rand_seeds[FIO_RAND_BLOCK_OFF]);
1671 bool fio_files_done(struct thread_data *td)
1676 for_each_file(td, f, i)
1677 if (!fio_file_done(f))
1683 /* free memory used in initialization phase only */
1684 void filesetup_mem_free(void)
1686 free_already_allocated();