17 #include "lib/axmap.h"
19 #ifdef CONFIG_LINUX_FALLOCATE
20 #include <linux/falloc.h>
25 static FLIST_HEAD(filename_list);
28 * List entry for filename_list
31 struct flist_head list;
35 static inline void clear_error(struct thread_data *td)
42 * Leaves f->fd open on success, caller must close
44 static int extend_file(struct thread_data *td, struct fio_file *f)
46 int r, new_layout = 0, unlink_file = 0, flags;
47 unsigned long long left;
52 log_err("fio: refusing extend of file due to read-only\n");
57 * check if we need to lay the file out complete again. fio
58 * does that for operations involving reads, or for writes
59 * where overwrite is set
62 (td_write(td) && td->o.overwrite && !td->o.file_append) ||
63 (td_write(td) && td_ioengine_flagged(td, FIO_NOEXTEND)))
65 if (td_write(td) && !td->o.overwrite && !td->o.file_append)
68 if (unlink_file || new_layout) {
71 dprint(FD_FILE, "layout unlink %s\n", f->file_name);
73 ret = td_io_unlink_file(td, f);
74 if (ret != 0 && ret != ENOENT) {
75 td_verror(td, errno, "unlink");
81 if (td->o.allow_create)
90 dprint(FD_FILE, "open file %s, flags %x\n", f->file_name, flags);
91 f->fd = open(f->file_name, flags, 0644);
95 if (err == ENOENT && !td->o.allow_create)
96 log_err("fio: file creation disallowed by "
97 "allow_file_create=0\n");
99 td_verror(td, err, "open");
103 #ifdef CONFIG_POSIX_FALLOCATE
104 if (!td->o.fill_device) {
105 switch (td->o.fallocate_mode) {
106 case FIO_FALLOCATE_NONE:
108 case FIO_FALLOCATE_POSIX:
109 dprint(FD_FILE, "posix_fallocate file %s size %llu\n",
111 (unsigned long long) f->real_file_size);
113 r = posix_fallocate(f->fd, 0, f->real_file_size);
115 log_err("fio: posix_fallocate fails: %s\n",
119 #ifdef CONFIG_LINUX_FALLOCATE
120 case FIO_FALLOCATE_KEEP_SIZE:
122 "fallocate(FALLOC_FL_KEEP_SIZE) "
123 "file %s size %llu\n", f->file_name,
124 (unsigned long long) f->real_file_size);
126 r = fallocate(f->fd, FALLOC_FL_KEEP_SIZE, 0,
129 td_verror(td, errno, "fallocate");
132 #endif /* CONFIG_LINUX_FALLOCATE */
134 log_err("fio: unknown fallocate mode: %d\n",
135 td->o.fallocate_mode);
139 #endif /* CONFIG_POSIX_FALLOCATE */
142 * If our jobs don't require regular files initially, we're done.
148 * The size will be -1ULL when fill_device is used, so don't truncate
149 * or fallocate this file, just write it
151 if (!td->o.fill_device) {
152 dprint(FD_FILE, "truncate file %s, size %llu\n", f->file_name,
153 (unsigned long long) f->real_file_size);
154 if (ftruncate(f->fd, f->real_file_size) == -1) {
155 if (errno != EFBIG) {
156 td_verror(td, errno, "ftruncate");
162 b = malloc(td->o.max_bs[DDIR_WRITE]);
164 left = f->real_file_size;
165 while (left && !td->terminate) {
166 bs = td->o.max_bs[DDIR_WRITE];
170 fill_io_buffer(td, b, bs, bs);
172 r = write(f->fd, b, bs);
182 if (td->o.fill_device)
184 log_info("fio: ENOSPC on laying out "
188 td_verror(td, errno, "write");
190 td_verror(td, EIO, "write");
197 dprint(FD_FILE, "terminate unlink %s\n", f->file_name);
198 td_io_unlink_file(td, f);
199 } else if (td->o.create_fsync) {
200 if (fsync(f->fd) < 0) {
201 td_verror(td, errno, "fsync");
205 if (td->o.fill_device && !td_write(td)) {
206 fio_file_clear_size_known(f);
207 if (td_io_get_file_size(td, f))
209 if (f->io_size > f->real_file_size)
210 f->io_size = f->real_file_size;
224 static int pre_read_file(struct thread_data *td, struct fio_file *f)
226 int ret = 0, r, did_open = 0, old_runstate;
227 unsigned long long left;
231 if (td_ioengine_flagged(td, FIO_PIPEIO))
234 if (!fio_file_open(f)) {
235 if (td->io_ops->open_file(td, f)) {
236 log_err("fio: cannot pre-read, failed to open file\n");
242 old_runstate = td_bump_runstate(td, TD_PRE_READING);
244 bs = td->o.max_bs[DDIR_READ];
248 if (lseek(f->fd, f->file_offset, SEEK_SET) < 0) {
249 td_verror(td, errno, "lseek");
250 log_err("fio: failed to lseek pre-read file\n");
257 while (left && !td->terminate) {
261 r = read(f->fd, b, bs);
267 td_verror(td, EIO, "pre_read");
273 td_restore_runstate(td, old_runstate);
276 td->io_ops->close_file(td, f);
282 unsigned long long get_rand_file_size(struct thread_data *td)
284 unsigned long long ret, sized;
288 frand_max = rand_max(&td->file_size_state);
289 r = __rand(&td->file_size_state);
290 sized = td->o.file_size_high - td->o.file_size_low;
291 ret = (unsigned long long) ((double) sized * (r / (frand_max + 1.0)));
292 ret += td->o.file_size_low;
293 ret -= (ret % td->o.rw_min_bs);
297 static int file_size(struct thread_data *td, struct fio_file *f)
301 if (stat(f->file_name, &st) == -1) {
302 td_verror(td, errno, "fstat");
306 f->real_file_size = st.st_size;
310 static int bdev_size(struct thread_data *td, struct fio_file *f)
312 unsigned long long bytes = 0;
315 if (td->io_ops->open_file(td, f)) {
316 log_err("fio: failed opening blockdev %s for size check\n",
321 r = blockdev_size(f, &bytes);
323 td_verror(td, r, "blockdev_size");
328 log_err("%s: zero sized block device?\n", f->file_name);
332 f->real_file_size = bytes;
333 td->io_ops->close_file(td, f);
336 td->io_ops->close_file(td, f);
340 static int char_size(struct thread_data *td, struct fio_file *f)
342 #ifdef FIO_HAVE_CHARDEV_SIZE
343 unsigned long long bytes = 0;
346 if (td->io_ops->open_file(td, f)) {
347 log_err("fio: failed opening chardev %s for size check\n",
352 r = chardev_size(f, &bytes);
354 td_verror(td, r, "chardev_size");
359 log_err("%s: zero sized char device?\n", f->file_name);
363 f->real_file_size = bytes;
364 td->io_ops->close_file(td, f);
367 td->io_ops->close_file(td, f);
370 f->real_file_size = -1ULL;
375 static int get_file_size(struct thread_data *td, struct fio_file *f)
379 if (fio_file_size_known(f))
382 if (f->filetype == FIO_TYPE_FILE)
383 ret = file_size(td, f);
384 else if (f->filetype == FIO_TYPE_BLOCK)
385 ret = bdev_size(td, f);
386 else if (f->filetype == FIO_TYPE_CHAR)
387 ret = char_size(td, f);
389 f->real_file_size = -1ULL;
392 * Leave ->real_file_size with 0 since it could be expectation
393 * of initial setup for regular files.
399 * If ->real_file_size is -1, a conditional for the message
400 * "offset extends end" is always true, but it makes no sense,
401 * so just return the same value here.
403 if (f->real_file_size == -1ULL) {
404 log_info("%s: failed to get file size of %s\n", td->o.name,
409 if (td->o.start_offset && f->file_offset == 0)
410 dprint(FD_FILE, "offset of file %s not initialized yet\n",
413 * ->file_offset normally hasn't been initialized yet, so this
414 * is basically always false.
416 if (f->file_offset > f->real_file_size) {
417 log_err("%s: offset extends end (%llu > %llu)\n", td->o.name,
418 (unsigned long long) f->file_offset,
419 (unsigned long long) f->real_file_size);
423 fio_file_set_size_known(f);
427 static int __file_invalidate_cache(struct thread_data *td, struct fio_file *f,
428 unsigned long long off,
429 unsigned long long len)
431 int errval = 0, ret = 0;
440 off = f->file_offset;
442 if (len == -1ULL || off == -1ULL)
445 dprint(FD_IO, "invalidate cache %s: %llu/%llu\n", f->file_name, off,
448 if (td->io_ops->invalidate) {
449 ret = td->io_ops->invalidate(td, f);
452 } else if (f->filetype == FIO_TYPE_FILE) {
453 ret = posix_fadvise(f->fd, off, len, POSIX_FADV_DONTNEED);
456 } else if (f->filetype == FIO_TYPE_BLOCK) {
459 ret = blockdev_invalidate_cache(f);
460 while (ret < 0 && errno == EAGAIN && retry_count++ < 25) {
462 * Linux multipath devices reject ioctl while
463 * the maps are being updated. That window can
464 * last tens of milliseconds; we'll try up to
465 * a quarter of a second.
468 ret = blockdev_invalidate_cache(f);
470 if (ret < 0 && errno == EACCES && geteuid()) {
472 log_err("fio: only root may flush block "
473 "devices. Cache flush bypassed!\n");
480 } else if (f->filetype == FIO_TYPE_CHAR || f->filetype == FIO_TYPE_PIPE)
484 * Cache flushing isn't a fatal condition, and we know it will
485 * happen on some platforms where we don't have the proper
486 * function to flush eg block device caches. So just warn and
487 * continue on our way.
490 log_info("fio: cache invalidation of %s failed: %s\n", f->file_name, strerror(errval));
496 int file_invalidate_cache(struct thread_data *td, struct fio_file *f)
498 if (!fio_file_open(f))
501 return __file_invalidate_cache(td, f, -1ULL, -1ULL);
504 int generic_close_file(struct thread_data fio_unused *td, struct fio_file *f)
508 dprint(FD_FILE, "fd close %s\n", f->file_name);
512 if (close(f->fd) < 0)
517 if (f->shadow_fd != -1) {
526 int file_lookup_open(struct fio_file *f, int flags)
528 struct fio_file *__f;
531 __f = lookup_file_hash(f->file_name);
533 dprint(FD_FILE, "found file in hash %s\n", f->file_name);
537 dprint(FD_FILE, "file not found in hash %s\n", f->file_name);
545 f->fd = open(f->file_name, flags, 0600);
549 static int file_close_shadow_fds(struct thread_data *td)
555 for_each_file(td, f, i) {
556 if (f->shadow_fd == -1)
567 int generic_open_file(struct thread_data *td, struct fio_file *f)
573 dprint(FD_FILE, "fd open %s\n", f->file_name);
575 if (!strcmp(f->file_name, "-")) {
577 log_err("fio: can't read/write to stdin/out\n");
583 * move output logging to stderr, if we are writing to stdout
592 flags |= OS_O_DIRECT;
595 td_verror(td, EINVAL, "OS does not support atomic IO");
598 flags |= OS_O_DIRECT | FIO_O_ATOMIC;
602 if (td->o.create_on_open && td->o.allow_create)
605 if (f->filetype != FIO_TYPE_FILE)
606 flags |= FIO_O_NOATIME;
613 if (f->filetype == FIO_TYPE_FILE && td->o.allow_create)
617 f->fd = dup(STDOUT_FILENO);
619 from_hash = file_lookup_open(f, flags);
620 } else if (td_read(td)) {
621 if (f->filetype == FIO_TYPE_CHAR && !read_only)
627 f->fd = dup(STDIN_FILENO);
629 from_hash = file_lookup_open(f, flags);
630 } else if (td_trim(td)) {
631 assert(!td_rw(td)); /* should have matched above */
633 from_hash = file_lookup_open(f, flags);
637 char buf[FIO_VERROR_SIZE];
640 if (__e == EPERM && (flags & FIO_O_NOATIME)) {
641 flags &= ~FIO_O_NOATIME;
644 if (__e == EMFILE && file_close_shadow_fds(td))
647 snprintf(buf, sizeof(buf), "open(%s)", f->file_name);
649 if (__e == EINVAL && (flags & OS_O_DIRECT)) {
650 log_err("fio: looks like your file system does not " \
651 "support direct=1/buffered=0\n");
654 td_verror(td, __e, buf);
658 if (!from_hash && f->fd != -1) {
659 if (add_file_hash(f)) {
663 * Stash away descriptor for later close. This is to
664 * work-around a "feature" on Linux, where a close of
665 * an fd that has been opened for write will trigger
666 * udev to call blkid to check partitions, fs id, etc.
667 * That pollutes the device cache, which can slow down
668 * unbuffered accesses.
670 if (f->shadow_fd == -1)
671 f->shadow_fd = f->fd;
674 * OK to ignore, we haven't done anything
677 ret = generic_close_file(td, f);
687 * This function i.e. get_file_size() is the default .get_file_size
688 * implementation of majority of I/O engines.
690 int generic_get_file_size(struct thread_data *td, struct fio_file *f)
692 return get_file_size(td, f);
696 * open/close all files, so that ->real_file_size gets set
698 static int get_file_sizes(struct thread_data *td)
704 for_each_file(td, f, i) {
705 dprint(FD_FILE, "get file size for %p/%d/%s\n", f, i,
708 if (td_io_get_file_size(td, f)) {
709 if (td->error != ENOENT) {
710 log_err("%s\n", td->verror);
718 * There are corner cases where we end up with -1 for
719 * ->real_file_size due to unsupported file type, etc.
720 * We then just set to size option value divided by number
721 * of files, similar to the way file ->io_size is set.
722 * stat(2) failure doesn't set ->real_file_size to -1.
724 if (f->real_file_size == -1ULL && td->o.size)
725 f->real_file_size = td->o.size / td->o.nr_files;
732 struct flist_head list;
739 * Get free number of bytes for each file on each unique mount.
741 static unsigned long long get_fs_free_counts(struct thread_data *td)
743 struct flist_head *n, *tmp;
744 unsigned long long ret = 0;
745 struct fio_mount *fm;
750 for_each_file(td, f, i) {
754 if (f->filetype == FIO_TYPE_BLOCK || f->filetype == FIO_TYPE_CHAR) {
755 if (f->real_file_size != -1ULL)
756 ret += f->real_file_size;
758 } else if (f->filetype != FIO_TYPE_FILE)
762 strncpy(buf, f->file_name, 255);
764 if (stat(buf, &sb) < 0) {
768 if (stat(buf, &sb) < 0)
773 flist_for_each(n, &list) {
774 fm = flist_entry(n, struct fio_mount, list);
775 if (fm->key == sb.st_dev)
784 fm = calloc(1, sizeof(*fm));
785 strncpy(fm->__base, buf, sizeof(fm->__base) - 1);
786 fm->base = basename(fm->__base);
788 flist_add(&fm->list, &list);
791 flist_for_each_safe(n, tmp, &list) {
792 unsigned long long sz;
794 fm = flist_entry(n, struct fio_mount, list);
795 flist_del(&fm->list);
797 sz = get_fs_free_size(fm->base);
798 if (sz && sz != -1ULL)
807 uint64_t get_start_offset(struct thread_data *td, struct fio_file *f)
809 struct thread_options *o = &td->o;
811 if (o->file_append && f->filetype == FIO_TYPE_FILE)
812 return f->real_file_size;
814 return td->o.start_offset +
815 td->subjob_number * td->o.offset_increment;
819 * Open the files and setup files sizes, creating files if necessary.
821 int setup_files(struct thread_data *td)
823 unsigned long long total_size, extend_size;
824 struct thread_options *o = &td->o;
826 unsigned int i, nr_fs_extra = 0;
827 int err = 0, need_extend;
829 const unsigned int bs = td_min_bs(td);
832 dprint(FD_FILE, "setup files\n");
834 old_state = td_bump_runstate(td, TD_SETTING_UP);
836 if (o->read_iolog_file)
840 * Find out physical size of files or devices for this thread,
841 * before we determine I/O size and range of our targets.
842 * If ioengine defines a setup() method, it's responsible for
843 * opening the files and setting f->real_file_size to indicate
844 * the valid range for that file.
846 if (td->io_ops->setup)
847 err = td->io_ops->setup(td);
849 err = get_file_sizes(td);
855 * check sizes. if the files/devices do not exist and the size
856 * isn't passed to fio, abort.
859 for_each_file(td, f, i) {
861 if (f->real_file_size == -1ULL)
864 total_size += f->real_file_size;
868 td->fill_device_size = get_fs_free_counts(td);
871 * device/file sizes are zero and no size given, punt
873 if ((!total_size || total_size == -1ULL) && !o->size &&
874 !td_ioengine_flagged(td, FIO_NOIO) && !o->fill_device &&
875 !(o->nr_files && (o->file_size_low || o->file_size_high))) {
876 log_err("%s: you need to specify size=\n", o->name);
877 td_verror(td, EINVAL, "total_file_size");
882 * Calculate per-file size and potential extra size for the
883 * first files, if needed (i.e. if we don't have a fixed size).
885 if (!o->file_size_low && o->nr_files) {
888 fs = o->size / o->nr_files;
889 all_fs = fs * o->nr_files;
891 if (all_fs < o->size)
892 nr_fs_extra = (o->size - all_fs) / bs;
896 * now file sizes are known, so we can set ->io_size. if size= is
897 * not given, ->io_size is just equal to ->real_file_size. if size
898 * is given, ->io_size is size / nr_files.
900 extend_size = total_size = 0;
902 for_each_file(td, f, i) {
903 f->file_offset = get_start_offset(td, f);
906 * Update ->io_size depending on options specified.
907 * ->file_size_low being 0 means filesize option isn't set.
908 * Non zero ->file_size_low equals ->file_size_high means
909 * filesize option is set in a fixed size format.
910 * Non zero ->file_size_low not equals ->file_size_high means
911 * filesize option is set in a range format.
913 if (!o->file_size_low) {
915 * no file size or range given, file size is equal to
916 * total size divided by number of files. If the size
917 * doesn't divide nicely with the min blocksize,
918 * make the first files bigger.
927 * We normally don't come here, but if the result is 0,
928 * set it to the real file size. This could be size of
929 * the existing one if it already exists, but otherwise
930 * will be set to 0. A new file won't be created because
931 * ->io_size + ->file_offset equals ->real_file_size.
934 if (f->file_offset > f->real_file_size)
936 f->io_size = f->real_file_size - f->file_offset;
937 log_info("fio: forcing file %s size to %llu\n",
939 (unsigned long long)f->io_size);
941 log_info("fio: file %s may be ignored\n",
944 } else if (f->real_file_size < o->file_size_low ||
945 f->real_file_size > o->file_size_high) {
946 if (f->file_offset > o->file_size_low)
949 * file size given. if it's fixed, use that. if it's a
950 * range, generate a random size in-between.
952 if (o->file_size_low == o->file_size_high)
953 f->io_size = o->file_size_low - f->file_offset;
955 f->io_size = get_rand_file_size(td)
959 f->io_size = f->real_file_size - f->file_offset;
961 if (f->io_size == -1ULL)
964 if (o->size_percent) {
965 f->io_size = (f->io_size * o->size_percent) / 100;
966 f->io_size -= (f->io_size % td_min_bs(td));
968 total_size += f->io_size;
971 if (f->filetype == FIO_TYPE_FILE &&
972 (f->io_size + f->file_offset) > f->real_file_size &&
973 !td_ioengine_flagged(td, FIO_DISKLESSIO)) {
974 if (!o->create_on_open) {
976 extend_size += (f->io_size + f->file_offset);
977 fio_file_set_extend(f);
979 f->real_file_size = f->io_size + f->file_offset;
983 if (td->o.block_error_hist) {
986 assert(td->o.nr_files == 1); /* checked in fixup_options */
988 len = f->io_size / td->o.bs[DDIR_TRIM];
989 if (len > MAX_NR_BLOCK_INFOS || len <= 0) {
990 log_err("fio: cannot calculate block histogram with "
991 "%d trim blocks, maximum %d\n",
992 len, MAX_NR_BLOCK_INFOS);
993 td_verror(td, EINVAL, "block_error_hist");
997 td->ts.nr_block_infos = len;
998 for (i = 0; i < len; i++)
999 td->ts.block_infos[i] =
1000 BLOCK_INFO(0, BLOCK_STATE_UNINIT);
1002 td->ts.nr_block_infos = 0;
1004 if (!o->size || (total_size && o->size > total_size))
1005 o->size = total_size;
1007 if (o->size < td_min_bs(td)) {
1008 log_err("fio: blocksize too large for data set\n");
1013 * See if we need to extend some files, typically needed when our
1014 * target regular files don't exist yet, but our jobs require them
1015 * initially due to read I/Os.
1019 if (output_format & FIO_OUTPUT_NORMAL) {
1020 log_info("%s: Laying out IO file%s (%u file%s / %s%lluMiB)\n",
1022 need_extend > 1 ? "s" : "",
1024 need_extend > 1 ? "s" : "",
1025 need_extend > 1 ? "total " : "",
1029 for_each_file(td, f, i) {
1030 unsigned long long old_len = -1ULL, extend_len = -1ULL;
1032 if (!fio_file_extend(f))
1035 assert(f->filetype == FIO_TYPE_FILE);
1036 fio_file_clear_extend(f);
1037 if (!o->fill_device) {
1038 old_len = f->real_file_size;
1039 extend_len = f->io_size + f->file_offset -
1042 f->real_file_size = (f->io_size + f->file_offset);
1043 err = extend_file(td, f);
1047 err = __file_invalidate_cache(td, f, old_len,
1051 * Shut up static checker
1067 o->zone_size = o->size;
1070 * iolog already set the total io size, if we read back
1073 if (!o->read_iolog_file) {
1075 td->total_io_size = o->io_size * o->loops;
1077 td->total_io_size = o->size * o->loops;
1084 td_restore_runstate(td, old_state);
1087 log_err("%s: you need to specify valid offset=\n", o->name);
1089 td_restore_runstate(td, old_state);
1093 int pre_read_files(struct thread_data *td)
1098 dprint(FD_FILE, "pre_read files\n");
1100 for_each_file(td, f, i) {
1101 pre_read_file(td, f);
1107 static int __init_rand_distribution(struct thread_data *td, struct fio_file *f)
1109 unsigned int range_size, seed;
1110 unsigned long nranges;
1113 range_size = min(td->o.min_bs[DDIR_READ], td->o.min_bs[DDIR_WRITE]);
1114 fsize = min(f->real_file_size, f->io_size);
1116 nranges = (fsize + range_size - 1) / range_size;
1118 seed = jhash(f->file_name, strlen(f->file_name), 0) * td->thread_number;
1119 if (!td->o.rand_repeatable)
1120 seed = td->rand_seeds[4];
1122 if (td->o.random_distribution == FIO_RAND_DIST_ZIPF)
1123 zipf_init(&f->zipf, nranges, td->o.zipf_theta.u.f, seed);
1124 else if (td->o.random_distribution == FIO_RAND_DIST_PARETO)
1125 pareto_init(&f->zipf, nranges, td->o.pareto_h.u.f, seed);
1126 else if (td->o.random_distribution == FIO_RAND_DIST_GAUSS)
1127 gauss_init(&f->gauss, nranges, td->o.gauss_dev.u.f, seed);
1132 static int init_rand_distribution(struct thread_data *td)
1138 if (td->o.random_distribution == FIO_RAND_DIST_RANDOM)
1141 state = td_bump_runstate(td, TD_SETTING_UP);
1143 for_each_file(td, f, i)
1144 __init_rand_distribution(td, f);
1146 td_restore_runstate(td, state);
1152 * Check if the number of blocks exceeds the randomness capability of
1153 * the selected generator. Tausworthe is 32-bit, the others are fullly
1156 static int check_rand_gen_limits(struct thread_data *td, struct fio_file *f,
1159 if (blocks <= FRAND32_MAX)
1161 if (td->o.random_generator != FIO_RAND_GEN_TAUSWORTHE)
1165 * If the user hasn't specified a random generator, switch
1166 * to tausworthe64 with informational warning. If the user did
1167 * specify one, just warn.
1169 log_info("fio: file %s exceeds 32-bit tausworthe random generator.\n",
1172 if (!fio_option_is_set(&td->o, random_generator)) {
1173 log_info("fio: Switching to tausworthe64. Use the "
1174 "random_generator= option to get rid of this "
1176 td->o.random_generator = FIO_RAND_GEN_TAUSWORTHE64;
1181 * Just make this information to avoid breaking scripts.
1183 log_info("fio: Use the random_generator= option to switch to lfsr or "
1188 int init_random_map(struct thread_data *td)
1190 unsigned long long blocks;
1194 if (init_rand_distribution(td))
1199 for_each_file(td, f, i) {
1200 uint64_t fsize = min(f->real_file_size, f->io_size);
1202 blocks = fsize / (unsigned long long) td->o.rw_min_bs;
1204 if (check_rand_gen_limits(td, f, blocks))
1207 if (td->o.random_generator == FIO_RAND_GEN_LFSR) {
1210 seed = td->rand_seeds[FIO_RAND_BLOCK_OFF];
1212 if (!lfsr_init(&f->lfsr, blocks, seed, 0)) {
1213 fio_file_set_lfsr(f);
1216 } else if (!td->o.norandommap) {
1217 f->io_axmap = axmap_new(blocks);
1219 fio_file_set_axmap(f);
1222 } else if (td->o.norandommap)
1225 if (!td->o.softrandommap) {
1226 log_err("fio: failed allocating random map. If running"
1227 " a large number of jobs, try the 'norandommap'"
1228 " option or set 'softrandommap'. Or give"
1229 " a larger --alloc-size to fio.\n");
1233 log_info("fio: file %s failed allocating random map. Running "
1234 "job without.\n", f->file_name);
1240 void close_files(struct thread_data *td)
1245 for_each_file(td, f, i) {
1246 if (fio_file_open(f))
1247 td_io_close_file(td, f);
1251 void close_and_free_files(struct thread_data *td)
1256 dprint(FD_FILE, "close files\n");
1258 for_each_file(td, f, i) {
1259 if (td->o.unlink && f->filetype == FIO_TYPE_FILE) {
1260 dprint(FD_FILE, "free unlink %s\n", f->file_name);
1261 td_io_unlink_file(td, f);
1264 if (fio_file_open(f))
1265 td_io_close_file(td, f);
1267 remove_file_hash(f);
1269 if (td->o.unlink && f->filetype == FIO_TYPE_FILE) {
1270 dprint(FD_FILE, "free unlink %s\n", f->file_name);
1271 td_io_unlink_file(td, f);
1274 sfree(f->file_name);
1275 f->file_name = NULL;
1276 if (fio_file_axmap(f)) {
1277 axmap_free(f->io_axmap);
1283 td->o.filename = NULL;
1285 free(td->file_locks);
1286 td->files_index = 0;
1288 td->file_locks = NULL;
1289 td->o.file_lock_mode = FILE_LOCK_NONE;
1293 static void get_file_type(struct fio_file *f)
1297 if (!strcmp(f->file_name, "-"))
1298 f->filetype = FIO_TYPE_PIPE;
1300 f->filetype = FIO_TYPE_FILE;
1303 /* \\.\ is the device namespace in Windows, where every file is
1305 if (strncmp(f->file_name, "\\\\.\\", 4) == 0)
1306 f->filetype = FIO_TYPE_BLOCK;
1309 if (!stat(f->file_name, &sb)) {
1310 if (S_ISBLK(sb.st_mode))
1311 f->filetype = FIO_TYPE_BLOCK;
1312 else if (S_ISCHR(sb.st_mode))
1313 f->filetype = FIO_TYPE_CHAR;
1314 else if (S_ISFIFO(sb.st_mode))
1315 f->filetype = FIO_TYPE_PIPE;
1319 static bool __is_already_allocated(const char *fname, bool set)
1321 struct flist_head *entry;
1324 ret = file_bloom_exists(fname, set);
1328 flist_for_each(entry, &filename_list) {
1329 struct file_name *fn;
1331 fn = flist_entry(entry, struct file_name, list);
1333 if (!strcmp(fn->filename, fname))
1340 static bool is_already_allocated(const char *fname)
1344 fio_file_hash_lock();
1345 ret = __is_already_allocated(fname, false);
1346 fio_file_hash_unlock();
1351 static void set_already_allocated(const char *fname)
1353 struct file_name *fn;
1355 fn = malloc(sizeof(struct file_name));
1356 fn->filename = strdup(fname);
1358 fio_file_hash_lock();
1359 if (!__is_already_allocated(fname, true)) {
1360 flist_add_tail(&fn->list, &filename_list);
1363 fio_file_hash_unlock();
1371 static void free_already_allocated(void)
1373 struct flist_head *entry, *tmp;
1374 struct file_name *fn;
1376 if (flist_empty(&filename_list))
1379 fio_file_hash_lock();
1380 flist_for_each_safe(entry, tmp, &filename_list) {
1381 fn = flist_entry(entry, struct file_name, list);
1383 flist_del(&fn->list);
1387 fio_file_hash_unlock();
1390 static struct fio_file *alloc_new_file(struct thread_data *td)
1394 f = smalloc(sizeof(*f));
1402 fio_file_reset(td, f);
1406 bool exists_and_not_regfile(const char *filename)
1410 if (lstat(filename, &sb) == -1)
1413 #ifndef WIN32 /* NOT Windows */
1414 if (S_ISREG(sb.st_mode))
1417 /* \\.\ is the device namespace in Windows, where every file
1418 * is a device node */
1419 if (S_ISREG(sb.st_mode) && strncmp(filename, "\\\\.\\", 4) != 0)
1426 int add_file(struct thread_data *td, const char *fname, int numjob, int inc)
1428 int cur_files = td->files_index;
1429 char file_name[PATH_MAX];
1433 dprint(FD_FILE, "add file %s\n", fname);
1435 if (td->o.directory)
1436 len = set_name_idx(file_name, PATH_MAX, td->o.directory, numjob,
1437 td->o.unique_filename);
1439 sprintf(file_name + len, "%s", fname);
1441 /* clean cloned siblings using existing files */
1442 if (numjob && is_already_allocated(file_name) &&
1443 !exists_and_not_regfile(fname))
1446 f = alloc_new_file(td);
1448 if (td->files_size <= td->files_index) {
1449 unsigned int new_size = td->o.nr_files + 1;
1451 dprint(FD_FILE, "resize file array to %d files\n", new_size);
1453 td->files = realloc(td->files, new_size * sizeof(f));
1454 if (td->files == NULL) {
1455 log_err("fio: realloc OOM\n");
1458 if (td->o.file_lock_mode != FILE_LOCK_NONE) {
1459 td->file_locks = realloc(td->file_locks, new_size);
1460 if (!td->file_locks) {
1461 log_err("fio: realloc OOM\n");
1464 td->file_locks[cur_files] = FILE_LOCK_NONE;
1466 td->files_size = new_size;
1468 td->files[cur_files] = f;
1469 f->fileno = cur_files;
1472 * init function, io engine may not be loaded yet
1474 if (td->io_ops && td_ioengine_flagged(td, FIO_DISKLESSIO))
1475 f->real_file_size = -1ULL;
1477 f->file_name = smalloc_strdup(file_name);
1483 switch (td->o.file_lock_mode) {
1484 case FILE_LOCK_NONE:
1486 case FILE_LOCK_READWRITE:
1487 f->rwlock = fio_rwlock_init();
1489 case FILE_LOCK_EXCLUSIVE:
1490 f->lock = fio_mutex_init(FIO_MUTEX_UNLOCKED);
1493 log_err("fio: unknown lock mode: %d\n", td->o.file_lock_mode);
1498 if (f->filetype == FIO_TYPE_FILE)
1499 td->nr_normal_files++;
1501 set_already_allocated(file_name);
1506 dprint(FD_FILE, "file %p \"%s\" added at %d\n", f, f->file_name,
1512 int add_file_exclusive(struct thread_data *td, const char *fname)
1517 for_each_file(td, f, i) {
1518 if (!strcmp(f->file_name, fname))
1522 return add_file(td, fname, 0, 1);
1525 void get_file(struct fio_file *f)
1527 dprint(FD_FILE, "get file %s, ref=%d\n", f->file_name, f->references);
1528 assert(fio_file_open(f));
1532 int put_file(struct thread_data *td, struct fio_file *f)
1534 int f_ret = 0, ret = 0;
1536 dprint(FD_FILE, "put file %s, ref=%d\n", f->file_name, f->references);
1538 if (!fio_file_open(f)) {
1539 assert(f->fd == -1);
1543 assert(f->references);
1544 if (--f->references)
1547 if (should_fsync(td) && td->o.fsync_on_close) {
1548 f_ret = fsync(f->fd);
1553 if (td->io_ops->close_file)
1554 ret = td->io_ops->close_file(td, f);
1559 td->nr_open_files--;
1560 fio_file_clear_open(f);
1561 assert(f->fd == -1);
1565 void lock_file(struct thread_data *td, struct fio_file *f, enum fio_ddir ddir)
1567 if (!f->lock || td->o.file_lock_mode == FILE_LOCK_NONE)
1570 if (td->o.file_lock_mode == FILE_LOCK_READWRITE) {
1571 if (ddir == DDIR_READ)
1572 fio_rwlock_read(f->rwlock);
1574 fio_rwlock_write(f->rwlock);
1575 } else if (td->o.file_lock_mode == FILE_LOCK_EXCLUSIVE)
1576 fio_mutex_down(f->lock);
1578 td->file_locks[f->fileno] = td->o.file_lock_mode;
1581 void unlock_file(struct thread_data *td, struct fio_file *f)
1583 if (!f->lock || td->o.file_lock_mode == FILE_LOCK_NONE)
1586 if (td->o.file_lock_mode == FILE_LOCK_READWRITE)
1587 fio_rwlock_unlock(f->rwlock);
1588 else if (td->o.file_lock_mode == FILE_LOCK_EXCLUSIVE)
1589 fio_mutex_up(f->lock);
1591 td->file_locks[f->fileno] = FILE_LOCK_NONE;
1594 void unlock_file_all(struct thread_data *td, struct fio_file *f)
1596 if (td->o.file_lock_mode == FILE_LOCK_NONE || !td->file_locks)
1598 if (td->file_locks[f->fileno] != FILE_LOCK_NONE)
1602 static int recurse_dir(struct thread_data *td, const char *dirname)
1608 D = opendir(dirname);
1610 char buf[FIO_VERROR_SIZE];
1612 snprintf(buf, FIO_VERROR_SIZE, "opendir(%s)", dirname);
1613 td_verror(td, errno, buf);
1617 while ((dir = readdir(D)) != NULL) {
1618 char full_path[PATH_MAX];
1621 if (!strcmp(dir->d_name, ".") || !strcmp(dir->d_name, ".."))
1624 sprintf(full_path, "%s%s%s", dirname, FIO_OS_PATH_SEPARATOR, dir->d_name);
1626 if (lstat(full_path, &sb) == -1) {
1627 if (errno != ENOENT) {
1628 td_verror(td, errno, "stat");
1634 if (S_ISREG(sb.st_mode)) {
1635 add_file(td, full_path, 0, 1);
1638 if (!S_ISDIR(sb.st_mode))
1641 ret = recurse_dir(td, full_path);
1650 int add_dir_files(struct thread_data *td, const char *path)
1652 int ret = recurse_dir(td, path);
1655 log_info("fio: opendir added %d files\n", td->o.nr_files);
1660 void dup_files(struct thread_data *td, struct thread_data *org)
1665 dprint(FD_FILE, "dup files: %d\n", org->files_index);
1670 td->files = malloc(org->files_index * sizeof(f));
1672 if (td->o.file_lock_mode != FILE_LOCK_NONE)
1673 td->file_locks = malloc(org->files_index);
1675 for_each_file(org, f, i) {
1676 struct fio_file *__f;
1678 __f = alloc_new_file(td);
1681 __f->file_name = smalloc_strdup(f->file_name);
1682 if (!__f->file_name)
1685 __f->filetype = f->filetype;
1688 if (td->o.file_lock_mode == FILE_LOCK_EXCLUSIVE)
1689 __f->lock = f->lock;
1690 else if (td->o.file_lock_mode == FILE_LOCK_READWRITE)
1691 __f->rwlock = f->rwlock;
1698 * Returns the index that matches the filename, or -1 if not there
1700 int get_fileno(struct thread_data *td, const char *fname)
1705 for_each_file(td, f, i)
1706 if (!strcmp(f->file_name, fname))
1713 * For log usage, where we add/open/close files automatically
1715 void free_release_files(struct thread_data *td)
1719 td->o.open_files = 0;
1720 td->files_index = 0;
1721 td->nr_normal_files = 0;
1724 void fio_file_reset(struct thread_data *td, struct fio_file *f)
1728 for (i = 0; i < DDIR_RWDIR_CNT; i++) {
1729 f->last_pos[i] = f->file_offset;
1730 f->last_start[i] = -1ULL;
1733 if (fio_file_axmap(f))
1734 axmap_reset(f->io_axmap);
1735 else if (fio_file_lfsr(f))
1736 lfsr_reset(&f->lfsr, td->rand_seeds[FIO_RAND_BLOCK_OFF]);
1739 bool fio_files_done(struct thread_data *td)
1744 for_each_file(td, f, i)
1745 if (!fio_file_done(f))
1751 /* free memory used in initialization phase only */
1752 void filesetup_mem_free(void)
1754 free_already_allocated();