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 static 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)
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);
413 else if (f->filetype == FIO_TYPE_FILE)
414 ret = posix_fadvise(f->fd, off, len, POSIX_FADV_DONTNEED);
415 else if (f->filetype == FIO_TYPE_BD) {
416 ret = blockdev_invalidate_cache(f);
417 if (ret < 0 && errno == EACCES && geteuid()) {
419 log_err("fio: only root may flush block "
420 "devices. Cache flush bypassed!\n");
425 } else if (f->filetype == FIO_TYPE_CHAR || f->filetype == FIO_TYPE_PIPE)
429 * Cache flushing isn't a fatal condition, and we know it will
430 * happen on some platforms where we don't have the proper
431 * function to flush eg block device caches. So just warn and
432 * continue on our way.
435 log_info("fio: cache invalidation of %s failed: %s\n", f->file_name, strerror(errno));
443 int file_invalidate_cache(struct thread_data *td, struct fio_file *f)
445 if (!fio_file_open(f))
448 return __file_invalidate_cache(td, f, -1ULL, -1ULL);
451 int generic_close_file(struct thread_data fio_unused *td, struct fio_file *f)
455 dprint(FD_FILE, "fd close %s\n", f->file_name);
459 if (close(f->fd) < 0)
464 if (f->shadow_fd != -1) {
473 int file_lookup_open(struct fio_file *f, int flags)
475 struct fio_file *__f;
478 __f = lookup_file_hash(f->file_name);
480 dprint(FD_FILE, "found file in hash %s\n", f->file_name);
482 * racy, need the __f->lock locked
487 dprint(FD_FILE, "file not found in hash %s\n", f->file_name);
495 f->fd = open(f->file_name, flags, 0600);
499 static int file_close_shadow_fds(struct thread_data *td)
505 for_each_file(td, f, i) {
506 if (f->shadow_fd == -1)
517 int generic_open_file(struct thread_data *td, struct fio_file *f)
523 dprint(FD_FILE, "fd open %s\n", f->file_name);
525 if (!strcmp(f->file_name, "-")) {
527 log_err("fio: can't read/write to stdin/out\n");
533 * move output logging to stderr, if we are writing to stdout
542 flags |= OS_O_DIRECT;
545 td_verror(td, EINVAL, "OS does not support atomic IO");
548 flags |= OS_O_DIRECT | FIO_O_ATOMIC;
552 if (td->o.create_on_open && td->o.allow_create)
555 if (f->filetype != FIO_TYPE_FILE)
556 flags |= FIO_O_NOATIME;
563 if (f->filetype == FIO_TYPE_FILE && td->o.allow_create)
567 f->fd = dup(STDOUT_FILENO);
569 from_hash = file_lookup_open(f, flags);
570 } else if (td_read(td)) {
571 if (f->filetype == FIO_TYPE_CHAR && !read_only)
577 f->fd = dup(STDIN_FILENO);
579 from_hash = file_lookup_open(f, flags);
582 from_hash = file_lookup_open(f, flags);
586 char buf[FIO_VERROR_SIZE];
589 if (__e == EPERM && (flags & FIO_O_NOATIME)) {
590 flags &= ~FIO_O_NOATIME;
593 if (__e == EMFILE && file_close_shadow_fds(td))
596 snprintf(buf, sizeof(buf), "open(%s)", f->file_name);
598 if (__e == EINVAL && (flags & OS_O_DIRECT)) {
599 log_err("fio: looks like your file system does not " \
600 "support direct=1/buffered=0\n");
603 td_verror(td, __e, buf);
607 if (!from_hash && f->fd != -1) {
608 if (add_file_hash(f)) {
612 * Stash away descriptor for later close. This is to
613 * work-around a "feature" on Linux, where a close of
614 * an fd that has been opened for write will trigger
615 * udev to call blkid to check partitions, fs id, etc.
616 * That pollutes the device cache, which can slow down
617 * unbuffered accesses.
619 if (f->shadow_fd == -1)
620 f->shadow_fd = f->fd;
623 * OK to ignore, we haven't done anything
626 ret = generic_close_file(td, f);
635 int generic_get_file_size(struct thread_data *td, struct fio_file *f)
637 return get_file_size(td, f);
641 * open/close all files, so that ->real_file_size gets set
643 static int get_file_sizes(struct thread_data *td)
649 for_each_file(td, f, i) {
650 dprint(FD_FILE, "get file size for %p/%d/%p\n", f, i,
653 if (td_io_get_file_size(td, f)) {
654 if (td->error != ENOENT) {
655 log_err("%s\n", td->verror);
662 if (f->real_file_size == -1ULL && td->o.size)
663 f->real_file_size = td->o.size / td->o.nr_files;
670 struct flist_head list;
677 * Get free number of bytes for each file on each unique mount.
679 static unsigned long long get_fs_free_counts(struct thread_data *td)
681 struct flist_head *n, *tmp;
682 unsigned long long ret = 0;
683 struct fio_mount *fm;
688 for_each_file(td, f, i) {
692 if (f->filetype == FIO_TYPE_BD || f->filetype == FIO_TYPE_CHAR) {
693 if (f->real_file_size != -1ULL)
694 ret += f->real_file_size;
696 } else if (f->filetype != FIO_TYPE_FILE)
700 strncpy(buf, f->file_name, 255);
702 if (stat(buf, &sb) < 0) {
706 if (stat(buf, &sb) < 0)
711 flist_for_each(n, &list) {
712 fm = flist_entry(n, struct fio_mount, list);
713 if (fm->key == sb.st_dev)
722 fm = calloc(1, sizeof(*fm));
723 strncpy(fm->__base, buf, sizeof(fm->__base) - 1);
724 fm->base = basename(fm->__base);
726 flist_add(&fm->list, &list);
729 flist_for_each_safe(n, tmp, &list) {
730 unsigned long long sz;
732 fm = flist_entry(n, struct fio_mount, list);
733 flist_del(&fm->list);
735 sz = get_fs_size(fm->base);
736 if (sz && sz != -1ULL)
745 uint64_t get_start_offset(struct thread_data *td, struct fio_file *f)
747 struct thread_options *o = &td->o;
749 if (o->file_append && f->filetype == FIO_TYPE_FILE)
750 return f->real_file_size;
752 return td->o.start_offset +
753 td->subjob_number * td->o.offset_increment;
757 * Open the files and setup files sizes, creating files if necessary.
759 int setup_files(struct thread_data *td)
761 unsigned long long total_size, extend_size;
762 struct thread_options *o = &td->o;
764 unsigned int i, nr_fs_extra = 0;
765 int err = 0, need_extend;
767 const unsigned int bs = td_min_bs(td);
770 dprint(FD_FILE, "setup files\n");
772 old_state = td_bump_runstate(td, TD_SETTING_UP);
774 if (o->read_iolog_file)
778 * if ioengine defines a setup() method, it's responsible for
779 * opening the files and setting f->real_file_size to indicate
780 * the valid range for that file.
782 if (td->io_ops->setup)
783 err = td->io_ops->setup(td);
785 err = get_file_sizes(td);
791 * check sizes. if the files/devices do not exist and the size
792 * isn't passed to fio, abort.
795 for_each_file(td, f, i) {
796 if (f->real_file_size == -1ULL)
799 total_size += f->real_file_size;
803 td->fill_device_size = get_fs_free_counts(td);
806 * device/file sizes are zero and no size given, punt
808 if ((!total_size || total_size == -1ULL) && !o->size &&
809 !(td->io_ops->flags & FIO_NOIO) && !o->fill_device &&
810 !(o->nr_files && (o->file_size_low || o->file_size_high))) {
811 log_err("%s: you need to specify size=\n", o->name);
812 td_verror(td, EINVAL, "total_file_size");
817 * Calculate per-file size and potential extra size for the
818 * first files, if needed.
820 if (!o->file_size_low && o->nr_files) {
823 fs = o->size / o->nr_files;
824 all_fs = fs * o->nr_files;
826 if (all_fs < o->size)
827 nr_fs_extra = (o->size - all_fs) / bs;
831 * now file sizes are known, so we can set ->io_size. if size= is
832 * not given, ->io_size is just equal to ->real_file_size. if size
833 * is given, ->io_size is size / nr_files.
835 extend_size = total_size = 0;
837 for_each_file(td, f, i) {
838 f->file_offset = get_start_offset(td, f);
840 if (!o->file_size_low) {
842 * no file size range given, file size is equal to
843 * total size divided by number of files. If that is
844 * zero, set it to the real file size. If the size
845 * doesn't divide nicely with the min blocksize,
846 * make the first files bigger.
855 f->io_size = f->real_file_size - f->file_offset;
856 } else if (f->real_file_size < o->file_size_low ||
857 f->real_file_size > o->file_size_high) {
858 if (f->file_offset > o->file_size_low)
861 * file size given. if it's fixed, use that. if it's a
862 * range, generate a random size in-between.
864 if (o->file_size_low == o->file_size_high)
865 f->io_size = o->file_size_low - f->file_offset;
867 f->io_size = get_rand_file_size(td)
871 f->io_size = f->real_file_size - f->file_offset;
873 if (f->io_size == -1ULL)
877 f->io_size = (f->io_size * o->size_percent) / 100;
878 total_size += f->io_size;
881 if (f->filetype == FIO_TYPE_FILE &&
882 (f->io_size + f->file_offset) > f->real_file_size &&
883 !(td->io_ops->flags & FIO_DISKLESSIO)) {
884 if (!o->create_on_open) {
886 extend_size += (f->io_size + f->file_offset);
888 f->real_file_size = f->io_size + f->file_offset;
889 fio_file_set_extend(f);
893 if (td->o.block_error_hist) {
896 assert(td->o.nr_files == 1); /* checked in fixup_options */
898 len = f->io_size / td->o.bs[DDIR_TRIM];
899 if (len > MAX_NR_BLOCK_INFOS || len <= 0) {
900 log_err("fio: cannot calculate block histogram with "
901 "%d trim blocks, maximum %d\n",
902 len, MAX_NR_BLOCK_INFOS);
903 td_verror(td, EINVAL, "block_error_hist");
907 td->ts.nr_block_infos = len;
908 for (int i = 0; i < len; i++)
909 td->ts.block_infos[i] =
910 BLOCK_INFO(0, BLOCK_STATE_UNINIT);
912 td->ts.nr_block_infos = 0;
914 if (!o->size || (total_size && o->size > total_size))
915 o->size = total_size;
917 if (o->size < td_min_bs(td)) {
918 log_err("fio: blocksize too large for data set\n");
923 * See if we need to extend some files
927 if (output_format == FIO_OUTPUT_NORMAL)
928 log_info("%s: Laying out IO file(s) (%u file(s) /"
929 " %lluMB)\n", o->name, need_extend,
932 for_each_file(td, f, i) {
933 unsigned long long old_len = -1ULL, extend_len = -1ULL;
935 if (!fio_file_extend(f))
938 assert(f->filetype == FIO_TYPE_FILE);
939 fio_file_clear_extend(f);
940 if (!o->fill_device) {
941 old_len = f->real_file_size;
942 extend_len = f->io_size + f->file_offset -
945 f->real_file_size = (f->io_size + f->file_offset);
946 err = extend_file(td, f);
950 err = __file_invalidate_cache(td, f, old_len,
954 * Shut up static checker
970 o->zone_size = o->size;
973 * iolog already set the total io size, if we read back
976 if (!o->read_iolog_file) {
978 td->total_io_size = o->io_limit * o->loops;
980 td->total_io_size = o->size * o->loops;
987 td_restore_runstate(td, old_state);
990 log_err("%s: you need to specify valid offset=\n", o->name);
992 td_restore_runstate(td, old_state);
996 int pre_read_files(struct thread_data *td)
1001 dprint(FD_FILE, "pre_read files\n");
1003 for_each_file(td, f, i) {
1004 pre_read_file(td, f);
1010 static int __init_rand_distribution(struct thread_data *td, struct fio_file *f)
1012 unsigned int range_size, seed;
1013 unsigned long nranges;
1016 range_size = min(td->o.min_bs[DDIR_READ], td->o.min_bs[DDIR_WRITE]);
1017 fsize = min(f->real_file_size, f->io_size);
1019 nranges = (fsize + range_size - 1) / range_size;
1021 seed = jhash(f->file_name, strlen(f->file_name), 0) * td->thread_number;
1022 if (!td->o.rand_repeatable)
1023 seed = td->rand_seeds[4];
1025 if (td->o.random_distribution == FIO_RAND_DIST_ZIPF)
1026 zipf_init(&f->zipf, nranges, td->o.zipf_theta.u.f, seed);
1027 else if (td->o.random_distribution == FIO_RAND_DIST_PARETO)
1028 pareto_init(&f->zipf, nranges, td->o.pareto_h.u.f, seed);
1029 else if (td->o.random_distribution == FIO_RAND_DIST_GAUSS)
1030 gauss_init(&f->gauss, nranges, td->o.gauss_dev.u.f, seed);
1035 static int init_rand_distribution(struct thread_data *td)
1041 if (td->o.random_distribution == FIO_RAND_DIST_RANDOM)
1044 state = td_bump_runstate(td, TD_SETTING_UP);
1046 for_each_file(td, f, i)
1047 __init_rand_distribution(td, f);
1049 td_restore_runstate(td, state);
1054 int init_random_map(struct thread_data *td)
1056 unsigned long long blocks;
1060 if (init_rand_distribution(td))
1065 for_each_file(td, f, i) {
1066 uint64_t fsize = min(f->real_file_size, f->io_size);
1068 blocks = fsize / (unsigned long long) td->o.rw_min_bs;
1070 if (blocks > FRAND32_MAX &&
1071 td->o.random_generator == FIO_RAND_GEN_TAUSWORTHE &&
1072 !fio_option_is_set(&td->o, random_generator)) {
1073 log_err("fio: file %s exceeds 32-bit tausworthe "
1074 "random generator. Use lfsr or "
1075 "tausworthe64.\n", f->file_name);
1076 td_verror(td, EINVAL, "init file random");
1080 if (td->o.random_generator == FIO_RAND_GEN_LFSR) {
1083 seed = td->rand_seeds[FIO_RAND_BLOCK_OFF];
1085 if (!lfsr_init(&f->lfsr, blocks, seed, 0)) {
1086 fio_file_set_lfsr(f);
1089 } else if (!td->o.norandommap) {
1090 f->io_axmap = axmap_new(blocks);
1092 fio_file_set_axmap(f);
1095 } else if (td->o.norandommap)
1098 if (!td->o.softrandommap) {
1099 log_err("fio: failed allocating random map. If running"
1100 " a large number of jobs, try the 'norandommap'"
1101 " option or set 'softrandommap'. Or give"
1102 " a larger --alloc-size to fio.\n");
1106 log_info("fio: file %s failed allocating random map. Running "
1107 "job without.\n", f->file_name);
1113 void close_files(struct thread_data *td)
1118 for_each_file(td, f, i) {
1119 if (fio_file_open(f))
1120 td_io_close_file(td, f);
1124 void close_and_free_files(struct thread_data *td)
1129 dprint(FD_FILE, "close files\n");
1131 for_each_file(td, f, i) {
1132 if (td->o.unlink && f->filetype == FIO_TYPE_FILE) {
1133 dprint(FD_FILE, "free unlink %s\n", f->file_name);
1134 td_io_unlink_file(td, f);
1137 if (fio_file_open(f))
1138 td_io_close_file(td, f);
1140 remove_file_hash(f);
1142 if (td->o.unlink && f->filetype == FIO_TYPE_FILE) {
1143 dprint(FD_FILE, "free unlink %s\n", f->file_name);
1144 td_io_unlink_file(td, f);
1147 sfree(f->file_name);
1148 f->file_name = NULL;
1149 if (fio_file_axmap(f)) {
1150 axmap_free(f->io_axmap);
1156 td->o.filename = NULL;
1158 free(td->file_locks);
1159 td->files_index = 0;
1161 td->file_locks = NULL;
1162 td->o.file_lock_mode = FILE_LOCK_NONE;
1166 static void get_file_type(struct fio_file *f)
1170 if (!strcmp(f->file_name, "-"))
1171 f->filetype = FIO_TYPE_PIPE;
1173 f->filetype = FIO_TYPE_FILE;
1175 /* \\.\ is the device namespace in Windows, where every file is
1177 if (strncmp(f->file_name, "\\\\.\\", 4) == 0)
1178 f->filetype = FIO_TYPE_BD;
1180 if (!stat(f->file_name, &sb)) {
1181 if (S_ISBLK(sb.st_mode))
1182 f->filetype = FIO_TYPE_BD;
1183 else if (S_ISCHR(sb.st_mode))
1184 f->filetype = FIO_TYPE_CHAR;
1185 else if (S_ISFIFO(sb.st_mode))
1186 f->filetype = FIO_TYPE_PIPE;
1190 static int __is_already_allocated(const char *fname)
1192 struct flist_head *entry;
1195 if (flist_empty(&filename_list))
1198 flist_for_each(entry, &filename_list) {
1199 filename = flist_entry(entry, struct file_name, list)->filename;
1201 if (strcmp(filename, fname) == 0)
1208 static int is_already_allocated(const char *fname)
1212 fio_file_hash_lock();
1213 ret = __is_already_allocated(fname);
1214 fio_file_hash_unlock();
1218 static void set_already_allocated(const char *fname)
1220 struct file_name *fn;
1222 fn = malloc(sizeof(struct file_name));
1223 fn->filename = strdup(fname);
1225 fio_file_hash_lock();
1226 if (!__is_already_allocated(fname)) {
1227 flist_add_tail(&fn->list, &filename_list);
1230 fio_file_hash_unlock();
1239 static void free_already_allocated(void)
1241 struct flist_head *entry, *tmp;
1242 struct file_name *fn;
1244 if (flist_empty(&filename_list))
1247 fio_file_hash_lock();
1248 flist_for_each_safe(entry, tmp, &filename_list) {
1249 fn = flist_entry(entry, struct file_name, list);
1251 flist_del(&fn->list);
1255 fio_file_hash_unlock();
1258 static struct fio_file *alloc_new_file(struct thread_data *td)
1262 f = smalloc(sizeof(*f));
1264 log_err("fio: smalloc OOM\n");
1271 fio_file_reset(td, f);
1275 int add_file(struct thread_data *td, const char *fname, int numjob, int inc)
1277 int cur_files = td->files_index;
1278 char file_name[PATH_MAX];
1282 dprint(FD_FILE, "add file %s\n", fname);
1284 if (td->o.directory)
1285 len = set_name_idx(file_name, PATH_MAX, td->o.directory, numjob);
1287 sprintf(file_name + len, "%s", fname);
1289 /* clean cloned siblings using existing files */
1290 if (numjob && is_already_allocated(file_name))
1293 f = alloc_new_file(td);
1295 if (td->files_size <= td->files_index) {
1296 unsigned int new_size = td->o.nr_files + 1;
1298 dprint(FD_FILE, "resize file array to %d files\n", new_size);
1300 td->files = realloc(td->files, new_size * sizeof(f));
1301 if (td->files == NULL) {
1302 log_err("fio: realloc OOM\n");
1305 if (td->o.file_lock_mode != FILE_LOCK_NONE) {
1306 td->file_locks = realloc(td->file_locks, new_size);
1307 if (!td->file_locks) {
1308 log_err("fio: realloc OOM\n");
1311 td->file_locks[cur_files] = FILE_LOCK_NONE;
1313 td->files_size = new_size;
1315 td->files[cur_files] = f;
1316 f->fileno = cur_files;
1319 * init function, io engine may not be loaded yet
1321 if (td->io_ops && (td->io_ops->flags & FIO_DISKLESSIO))
1322 f->real_file_size = -1ULL;
1324 f->file_name = smalloc_strdup(file_name);
1325 if (!f->file_name) {
1326 log_err("fio: smalloc OOM\n");
1332 switch (td->o.file_lock_mode) {
1333 case FILE_LOCK_NONE:
1335 case FILE_LOCK_READWRITE:
1336 f->rwlock = fio_rwlock_init();
1338 case FILE_LOCK_EXCLUSIVE:
1339 f->lock = fio_mutex_init(FIO_MUTEX_UNLOCKED);
1342 log_err("fio: unknown lock mode: %d\n", td->o.file_lock_mode);
1347 if (f->filetype == FIO_TYPE_FILE)
1348 td->nr_normal_files++;
1350 set_already_allocated(file_name);
1355 dprint(FD_FILE, "file %p \"%s\" added at %d\n", f, f->file_name,
1361 int add_file_exclusive(struct thread_data *td, const char *fname)
1366 for_each_file(td, f, i) {
1367 if (!strcmp(f->file_name, fname))
1371 return add_file(td, fname, 0, 1);
1374 void get_file(struct fio_file *f)
1376 dprint(FD_FILE, "get file %s, ref=%d\n", f->file_name, f->references);
1377 assert(fio_file_open(f));
1381 int put_file(struct thread_data *td, struct fio_file *f)
1383 int f_ret = 0, ret = 0;
1385 dprint(FD_FILE, "put file %s, ref=%d\n", f->file_name, f->references);
1387 if (!fio_file_open(f)) {
1388 assert(f->fd == -1);
1392 assert(f->references);
1393 if (--f->references)
1396 if (should_fsync(td) && td->o.fsync_on_close) {
1397 f_ret = fsync(f->fd);
1402 if (td->io_ops->close_file)
1403 ret = td->io_ops->close_file(td, f);
1408 td->nr_open_files--;
1409 fio_file_clear_open(f);
1410 assert(f->fd == -1);
1414 void lock_file(struct thread_data *td, struct fio_file *f, enum fio_ddir ddir)
1416 if (!f->lock || td->o.file_lock_mode == FILE_LOCK_NONE)
1419 if (td->o.file_lock_mode == FILE_LOCK_READWRITE) {
1420 if (ddir == DDIR_READ)
1421 fio_rwlock_read(f->rwlock);
1423 fio_rwlock_write(f->rwlock);
1424 } else if (td->o.file_lock_mode == FILE_LOCK_EXCLUSIVE)
1425 fio_mutex_down(f->lock);
1427 td->file_locks[f->fileno] = td->o.file_lock_mode;
1430 void unlock_file(struct thread_data *td, struct fio_file *f)
1432 if (!f->lock || td->o.file_lock_mode == FILE_LOCK_NONE)
1435 if (td->o.file_lock_mode == FILE_LOCK_READWRITE)
1436 fio_rwlock_unlock(f->rwlock);
1437 else if (td->o.file_lock_mode == FILE_LOCK_EXCLUSIVE)
1438 fio_mutex_up(f->lock);
1440 td->file_locks[f->fileno] = FILE_LOCK_NONE;
1443 void unlock_file_all(struct thread_data *td, struct fio_file *f)
1445 if (td->o.file_lock_mode == FILE_LOCK_NONE || !td->file_locks)
1447 if (td->file_locks[f->fileno] != FILE_LOCK_NONE)
1451 static int recurse_dir(struct thread_data *td, const char *dirname)
1457 D = opendir(dirname);
1459 char buf[FIO_VERROR_SIZE];
1461 snprintf(buf, FIO_VERROR_SIZE, "opendir(%s)", dirname);
1462 td_verror(td, errno, buf);
1466 while ((dir = readdir(D)) != NULL) {
1467 char full_path[PATH_MAX];
1470 if (!strcmp(dir->d_name, ".") || !strcmp(dir->d_name, ".."))
1473 sprintf(full_path, "%s%s%s", dirname, FIO_OS_PATH_SEPARATOR, dir->d_name);
1475 if (lstat(full_path, &sb) == -1) {
1476 if (errno != ENOENT) {
1477 td_verror(td, errno, "stat");
1483 if (S_ISREG(sb.st_mode)) {
1484 add_file(td, full_path, 0, 1);
1487 if (!S_ISDIR(sb.st_mode))
1490 ret = recurse_dir(td, full_path);
1499 int add_dir_files(struct thread_data *td, const char *path)
1501 int ret = recurse_dir(td, path);
1504 log_info("fio: opendir added %d files\n", td->o.nr_files);
1509 void dup_files(struct thread_data *td, struct thread_data *org)
1514 dprint(FD_FILE, "dup files: %d\n", org->files_index);
1519 td->files = malloc(org->files_index * sizeof(f));
1521 if (td->o.file_lock_mode != FILE_LOCK_NONE)
1522 td->file_locks = malloc(org->files_index);
1524 for_each_file(org, f, i) {
1525 struct fio_file *__f;
1527 __f = alloc_new_file(td);
1530 __f->file_name = smalloc_strdup(f->file_name);
1531 if (!__f->file_name) {
1532 log_err("fio: smalloc OOM\n");
1536 __f->filetype = f->filetype;
1539 if (td->o.file_lock_mode == FILE_LOCK_EXCLUSIVE)
1540 __f->lock = f->lock;
1541 else if (td->o.file_lock_mode == FILE_LOCK_READWRITE)
1542 __f->rwlock = f->rwlock;
1549 * Returns the index that matches the filename, or -1 if not there
1551 int get_fileno(struct thread_data *td, const char *fname)
1556 for_each_file(td, f, i)
1557 if (!strcmp(f->file_name, fname))
1564 * For log usage, where we add/open/close files automatically
1566 void free_release_files(struct thread_data *td)
1570 td->o.open_files = 0;
1571 td->files_index = 0;
1572 td->nr_normal_files = 0;
1575 void fio_file_reset(struct thread_data *td, struct fio_file *f)
1579 for (i = 0; i < DDIR_RWDIR_CNT; i++) {
1580 f->last_pos[i] = f->file_offset;
1581 f->last_start[i] = -1ULL;
1584 if (fio_file_axmap(f))
1585 axmap_reset(f->io_axmap);
1586 else if (fio_file_lfsr(f))
1587 lfsr_reset(&f->lfsr, td->rand_seeds[FIO_RAND_BLOCK_OFF]);
1590 int fio_files_done(struct thread_data *td)
1595 for_each_file(td, f, i)
1596 if (!fio_file_done(f))
1602 /* free memory used in initialization phase only */
1603 void filesetup_mem_free(void)
1605 free_already_allocated();