| #include <unistd.h> |
| #include <fcntl.h> |
| #include <string.h> |
| #include <assert.h> |
| #include <dirent.h> |
| #include <libgen.h> |
| #include <sys/stat.h> |
| #include <sys/mman.h> |
| #include <sys/types.h> |
| |
| #include "fio.h" |
| #include "smalloc.h" |
| #include "filehash.h" |
| #include "os/os.h" |
| #include "hash.h" |
| #include "lib/axmap.h" |
| |
| #ifdef CONFIG_LINUX_FALLOCATE |
| #include <linux/falloc.h> |
| #endif |
| |
| static int root_warn; |
| |
| static inline void clear_error(struct thread_data *td) |
| { |
| td->error = 0; |
| td->verror[0] = '\0'; |
| } |
| |
| /* |
| * Leaves f->fd open on success, caller must close |
| */ |
| static int extend_file(struct thread_data *td, struct fio_file *f) |
| { |
| int r, new_layout = 0, unlink_file = 0, flags; |
| unsigned long long left; |
| unsigned int bs; |
| char *b; |
| |
| if (read_only) { |
| log_err("fio: refusing extend of file due to read-only\n"); |
| return 0; |
| } |
| |
| /* |
| * check if we need to lay the file out complete again. fio |
| * does that for operations involving reads, or for writes |
| * where overwrite is set |
| */ |
| if (td_read(td) || (td_write(td) && td->o.overwrite) || |
| (td_write(td) && td->io_ops->flags & FIO_NOEXTEND)) |
| new_layout = 1; |
| if (td_write(td) && !td->o.overwrite) |
| unlink_file = 1; |
| |
| if (unlink_file || new_layout) { |
| dprint(FD_FILE, "layout unlink %s\n", f->file_name); |
| if ((unlink(f->file_name) < 0) && (errno != ENOENT)) { |
| td_verror(td, errno, "unlink"); |
| return 1; |
| } |
| } |
| |
| flags = O_WRONLY | O_CREAT; |
| if (new_layout) |
| flags |= O_TRUNC; |
| |
| dprint(FD_FILE, "open file %s, flags %x\n", f->file_name, flags); |
| f->fd = open(f->file_name, flags, 0644); |
| if (f->fd < 0) { |
| td_verror(td, errno, "open"); |
| return 1; |
| } |
| |
| #ifdef CONFIG_POSIX_FALLOCATE |
| if (!td->o.fill_device) { |
| switch (td->o.fallocate_mode) { |
| case FIO_FALLOCATE_NONE: |
| break; |
| case FIO_FALLOCATE_POSIX: |
| dprint(FD_FILE, "posix_fallocate file %s size %llu\n", |
| f->file_name, |
| (unsigned long long) f->real_file_size); |
| |
| r = posix_fallocate(f->fd, 0, f->real_file_size); |
| if (r > 0) { |
| log_err("fio: posix_fallocate fails: %s\n", |
| strerror(r)); |
| } |
| break; |
| #ifdef CONFIG_LINUX_FALLOCATE |
| case FIO_FALLOCATE_KEEP_SIZE: |
| dprint(FD_FILE, |
| "fallocate(FALLOC_FL_KEEP_SIZE) " |
| "file %s size %llu\n", f->file_name, |
| (unsigned long long) f->real_file_size); |
| |
| r = fallocate(f->fd, FALLOC_FL_KEEP_SIZE, 0, |
| f->real_file_size); |
| if (r != 0) |
| td_verror(td, errno, "fallocate"); |
| |
| break; |
| #endif /* CONFIG_LINUX_FALLOCATE */ |
| default: |
| log_err("fio: unknown fallocate mode: %d\n", |
| td->o.fallocate_mode); |
| assert(0); |
| } |
| } |
| #endif /* CONFIG_POSIX_FALLOCATE */ |
| |
| if (!new_layout) |
| goto done; |
| |
| /* |
| * The size will be -1ULL when fill_device is used, so don't truncate |
| * or fallocate this file, just write it |
| */ |
| if (!td->o.fill_device) { |
| dprint(FD_FILE, "truncate file %s, size %llu\n", f->file_name, |
| (unsigned long long) f->real_file_size); |
| if (ftruncate(f->fd, f->real_file_size) == -1) { |
| td_verror(td, errno, "ftruncate"); |
| goto err; |
| } |
| } |
| |
| b = malloc(td->o.max_bs[DDIR_WRITE]); |
| |
| left = f->real_file_size; |
| while (left && !td->terminate) { |
| bs = td->o.max_bs[DDIR_WRITE]; |
| if (bs > left) |
| bs = left; |
| |
| fill_io_buffer(td, b, bs, bs); |
| |
| r = write(f->fd, b, bs); |
| |
| if (r > 0) { |
| left -= r; |
| continue; |
| } else { |
| if (r < 0) { |
| int __e = errno; |
| |
| if (__e == ENOSPC) { |
| if (td->o.fill_device) |
| break; |
| log_info("fio: ENOSPC on laying out " |
| "file, stopping\n"); |
| break; |
| } |
| td_verror(td, errno, "write"); |
| } else |
| td_verror(td, EIO, "write"); |
| |
| break; |
| } |
| } |
| |
| if (td->terminate) { |
| dprint(FD_FILE, "terminate unlink %s\n", f->file_name); |
| unlink(f->file_name); |
| } else if (td->o.create_fsync) { |
| if (fsync(f->fd) < 0) { |
| td_verror(td, errno, "fsync"); |
| goto err; |
| } |
| } |
| if (td->o.fill_device && !td_write(td)) { |
| fio_file_clear_size_known(f); |
| if (td_io_get_file_size(td, f)) |
| goto err; |
| if (f->io_size > f->real_file_size) |
| f->io_size = f->real_file_size; |
| } |
| |
| free(b); |
| done: |
| return 0; |
| err: |
| close(f->fd); |
| f->fd = -1; |
| return 1; |
| } |
| |
| static int pre_read_file(struct thread_data *td, struct fio_file *f) |
| { |
| int r, did_open = 0, old_runstate; |
| unsigned long long left; |
| unsigned int bs; |
| char *b; |
| |
| if (td->io_ops->flags & FIO_PIPEIO) |
| return 0; |
| |
| if (!fio_file_open(f)) { |
| if (td->io_ops->open_file(td, f)) { |
| log_err("fio: cannot pre-read, failed to open file\n"); |
| return 1; |
| } |
| did_open = 1; |
| } |
| |
| old_runstate = td->runstate; |
| td_set_runstate(td, TD_PRE_READING); |
| |
| bs = td->o.max_bs[DDIR_READ]; |
| b = malloc(bs); |
| memset(b, 0, bs); |
| |
| lseek(f->fd, f->file_offset, SEEK_SET); |
| left = f->io_size; |
| |
| while (left && !td->terminate) { |
| if (bs > left) |
| bs = left; |
| |
| r = read(f->fd, b, bs); |
| |
| if (r == (int) bs) { |
| left -= bs; |
| continue; |
| } else { |
| td_verror(td, EIO, "pre_read"); |
| break; |
| } |
| } |
| |
| td_set_runstate(td, old_runstate); |
| |
| if (did_open) |
| td->io_ops->close_file(td, f); |
| free(b); |
| return 0; |
| } |
| |
| static unsigned long long get_rand_file_size(struct thread_data *td) |
| { |
| unsigned long long ret, sized; |
| unsigned long r; |
| |
| if (td->o.use_os_rand) { |
| r = os_random_long(&td->file_size_state); |
| sized = td->o.file_size_high - td->o.file_size_low; |
| ret = (unsigned long long) ((double) sized * (r / (OS_RAND_MAX + 1.0))); |
| } else { |
| r = __rand(&td->__file_size_state); |
| sized = td->o.file_size_high - td->o.file_size_low; |
| ret = (unsigned long long) ((double) sized * (r / (FRAND_MAX + 1.0))); |
| } |
| |
| ret += td->o.file_size_low; |
| ret -= (ret % td->o.rw_min_bs); |
| return ret; |
| } |
| |
| static int file_size(struct thread_data *td, struct fio_file *f) |
| { |
| struct stat st; |
| |
| if (stat(f->file_name, &st) == -1) { |
| td_verror(td, errno, "fstat"); |
| return 1; |
| } |
| |
| f->real_file_size = st.st_size; |
| return 0; |
| } |
| |
| static int bdev_size(struct thread_data *td, struct fio_file *f) |
| { |
| unsigned long long bytes = 0; |
| int r; |
| |
| if (td->io_ops->open_file(td, f)) { |
| log_err("fio: failed opening blockdev %s for size check\n", |
| f->file_name); |
| return 1; |
| } |
| |
| r = blockdev_size(f, &bytes); |
| if (r) { |
| td_verror(td, r, "blockdev_size"); |
| goto err; |
| } |
| |
| if (!bytes) { |
| log_err("%s: zero sized block device?\n", f->file_name); |
| goto err; |
| } |
| |
| f->real_file_size = bytes; |
| td->io_ops->close_file(td, f); |
| return 0; |
| err: |
| td->io_ops->close_file(td, f); |
| return 1; |
| } |
| |
| static int char_size(struct thread_data *td, struct fio_file *f) |
| { |
| #ifdef FIO_HAVE_CHARDEV_SIZE |
| unsigned long long bytes = 0; |
| int r; |
| |
| if (td->io_ops->open_file(td, f)) { |
| log_err("fio: failed opening blockdev %s for size check\n", |
| f->file_name); |
| return 1; |
| } |
| |
| r = chardev_size(f, &bytes); |
| if (r) { |
| td_verror(td, r, "chardev_size"); |
| goto err; |
| } |
| |
| if (!bytes) { |
| log_err("%s: zero sized char device?\n", f->file_name); |
| goto err; |
| } |
| |
| f->real_file_size = bytes; |
| td->io_ops->close_file(td, f); |
| return 0; |
| err: |
| td->io_ops->close_file(td, f); |
| return 1; |
| #else |
| f->real_file_size = -1ULL; |
| return 0; |
| #endif |
| } |
| |
| static int get_file_size(struct thread_data *td, struct fio_file *f) |
| { |
| int ret = 0; |
| |
| if (fio_file_size_known(f)) |
| return 0; |
| |
| if (f->filetype == FIO_TYPE_FILE) |
| ret = file_size(td, f); |
| else if (f->filetype == FIO_TYPE_BD) |
| ret = bdev_size(td, f); |
| else if (f->filetype == FIO_TYPE_CHAR) |
| ret = char_size(td, f); |
| else |
| f->real_file_size = -1; |
| |
| if (ret) |
| return ret; |
| |
| if (f->file_offset > f->real_file_size) { |
| log_err("%s: offset extends end (%llu > %llu)\n", td->o.name, |
| (unsigned long long) f->file_offset, |
| (unsigned long long) f->real_file_size); |
| return 1; |
| } |
| |
| fio_file_set_size_known(f); |
| return 0; |
| } |
| |
| static int __file_invalidate_cache(struct thread_data *td, struct fio_file *f, |
| unsigned long long off, |
| unsigned long long len) |
| { |
| int ret = 0; |
| |
| if (len == -1ULL) |
| len = f->io_size; |
| if (off == -1ULL) |
| off = f->file_offset; |
| |
| if (len == -1ULL || off == -1ULL) |
| return 0; |
| |
| dprint(FD_IO, "invalidate cache %s: %llu/%llu\n", f->file_name, off, |
| len); |
| |
| /* |
| * FIXME: add blockdev flushing too |
| */ |
| if (f->mmap_ptr) { |
| ret = posix_madvise(f->mmap_ptr, f->mmap_sz, POSIX_MADV_DONTNEED); |
| #ifdef FIO_MADV_FREE |
| if (f->filetype == FIO_TYPE_BD) |
| (void) posix_madvise(f->mmap_ptr, f->mmap_sz, FIO_MADV_FREE); |
| #endif |
| } else if (f->filetype == FIO_TYPE_FILE) { |
| ret = posix_fadvise(f->fd, off, len, POSIX_FADV_DONTNEED); |
| } else if (f->filetype == FIO_TYPE_BD) { |
| ret = blockdev_invalidate_cache(f); |
| if (ret < 0 && errno == EACCES && geteuid()) { |
| if (!root_warn) { |
| log_err("fio: only root may flush block " |
| "devices. Cache flush bypassed!\n"); |
| root_warn = 1; |
| } |
| ret = 0; |
| } |
| } else if (f->filetype == FIO_TYPE_CHAR || f->filetype == FIO_TYPE_PIPE) |
| ret = 0; |
| |
| if (ret < 0) { |
| td_verror(td, errno, "invalidate_cache"); |
| return 1; |
| } else if (ret > 0) { |
| td_verror(td, ret, "invalidate_cache"); |
| return 1; |
| } |
| |
| return ret; |
| |
| } |
| |
| int file_invalidate_cache(struct thread_data *td, struct fio_file *f) |
| { |
| if (!fio_file_open(f)) |
| return 0; |
| |
| return __file_invalidate_cache(td, f, -1ULL, -1ULL); |
| } |
| |
| int generic_close_file(struct thread_data fio_unused *td, struct fio_file *f) |
| { |
| int ret = 0; |
| |
| dprint(FD_FILE, "fd close %s\n", f->file_name); |
| |
| remove_file_hash(f); |
| |
| if (close(f->fd) < 0) |
| ret = errno; |
| |
| f->fd = -1; |
| |
| if (f->shadow_fd != -1) { |
| close(f->shadow_fd); |
| f->shadow_fd = -1; |
| } |
| |
| f->engine_data = 0; |
| return ret; |
| } |
| |
| int file_lookup_open(struct fio_file *f, int flags) |
| { |
| struct fio_file *__f; |
| int from_hash; |
| |
| __f = lookup_file_hash(f->file_name); |
| if (__f) { |
| dprint(FD_FILE, "found file in hash %s\n", f->file_name); |
| /* |
| * racy, need the __f->lock locked |
| */ |
| f->lock = __f->lock; |
| from_hash = 1; |
| } else { |
| dprint(FD_FILE, "file not found in hash %s\n", f->file_name); |
| from_hash = 0; |
| } |
| |
| f->fd = open(f->file_name, flags, 0600); |
| return from_hash; |
| } |
| |
| static int file_close_shadow_fds(struct thread_data *td) |
| { |
| struct fio_file *f; |
| int num_closed = 0; |
| unsigned int i; |
| |
| for_each_file(td, f, i) { |
| if (f->shadow_fd == -1) |
| continue; |
| |
| close(f->shadow_fd); |
| f->shadow_fd = -1; |
| num_closed++; |
| } |
| |
| return num_closed; |
| } |
| |
| int generic_open_file(struct thread_data *td, struct fio_file *f) |
| { |
| int is_std = 0; |
| int flags = 0; |
| int from_hash = 0; |
| |
| dprint(FD_FILE, "fd open %s\n", f->file_name); |
| |
| if (td_trim(td) && f->filetype != FIO_TYPE_BD) { |
| log_err("fio: trim only applies to block device\n"); |
| return 1; |
| } |
| |
| if (!strcmp(f->file_name, "-")) { |
| if (td_rw(td)) { |
| log_err("fio: can't read/write to stdin/out\n"); |
| return 1; |
| } |
| is_std = 1; |
| |
| /* |
| * move output logging to stderr, if we are writing to stdout |
| */ |
| if (td_write(td)) |
| f_out = stderr; |
| } |
| |
| if (td_trim(td)) |
| goto skip_flags; |
| if (td->o.odirect) |
| flags |= OS_O_DIRECT; |
| if (td->o.oatomic) { |
| if (!FIO_O_ATOMIC) { |
| td_verror(td, EINVAL, "OS does not support atomic IO"); |
| return 1; |
| } |
| flags |= OS_O_DIRECT | FIO_O_ATOMIC; |
| } |
| if (td->o.sync_io) |
| flags |= O_SYNC; |
| if (td->o.create_on_open) |
| flags |= O_CREAT; |
| skip_flags: |
| if (f->filetype != FIO_TYPE_FILE) |
| flags |= FIO_O_NOATIME; |
| |
| open_again: |
| if (td_write(td)) { |
| if (!read_only) |
| flags |= O_RDWR; |
| |
| if (f->filetype == FIO_TYPE_FILE) |
| flags |= O_CREAT; |
| |
| if (is_std) |
| f->fd = dup(STDOUT_FILENO); |
| else |
| from_hash = file_lookup_open(f, flags); |
| } else if (td_read(td)) { |
| if (f->filetype == FIO_TYPE_CHAR && !read_only) |
| flags |= O_RDWR; |
| else |
| flags |= O_RDONLY; |
| |
| if (is_std) |
| f->fd = dup(STDIN_FILENO); |
| else |
| from_hash = file_lookup_open(f, flags); |
| } else { //td trim |
| flags |= O_RDWR; |
| from_hash = file_lookup_open(f, flags); |
| } |
| |
| if (f->fd == -1) { |
| char buf[FIO_VERROR_SIZE]; |
| int __e = errno; |
| |
| if (__e == EPERM && (flags & FIO_O_NOATIME)) { |
| flags &= ~FIO_O_NOATIME; |
| goto open_again; |
| } |
| if (__e == EMFILE && file_close_shadow_fds(td)) |
| goto open_again; |
| |
| snprintf(buf, sizeof(buf), "open(%s)", f->file_name); |
| |
| if (__e == EINVAL && (flags & OS_O_DIRECT)) { |
| log_err("fio: looks like your file system does not " \ |
| "support direct=1/buffered=0\n"); |
| } |
| |
| td_verror(td, __e, buf); |
| } |
| |
| if (!from_hash && f->fd != -1) { |
| if (add_file_hash(f)) { |
| int fio_unused ret; |
| |
| /* |
| * Stash away descriptor for later close. This is to |
| * work-around a "feature" on Linux, where a close of |
| * an fd that has been opened for write will trigger |
| * udev to call blkid to check partitions, fs id, etc. |
| * That pollutes the device cache, which can slow down |
| * unbuffered accesses. |
| */ |
| if (f->shadow_fd == -1) |
| f->shadow_fd = f->fd; |
| else { |
| /* |
| * OK to ignore, we haven't done anything |
| * with it |
| */ |
| ret = generic_close_file(td, f); |
| } |
| goto open_again; |
| } |
| } |
| |
| return 0; |
| } |
| |
| int generic_get_file_size(struct thread_data *td, struct fio_file *f) |
| { |
| return get_file_size(td, f); |
| } |
| |
| /* |
| * open/close all files, so that ->real_file_size gets set |
| */ |
| static int get_file_sizes(struct thread_data *td) |
| { |
| struct fio_file *f; |
| unsigned int i; |
| int err = 0; |
| |
| for_each_file(td, f, i) { |
| dprint(FD_FILE, "get file size for %p/%d/%p\n", f, i, |
| f->file_name); |
| |
| if (td_io_get_file_size(td, f)) { |
| if (td->error != ENOENT) { |
| log_err("%s\n", td->verror); |
| err = 1; |
| } |
| clear_error(td); |
| } |
| |
| if (f->real_file_size == -1ULL && td->o.size) |
| f->real_file_size = td->o.size / td->o.nr_files; |
| } |
| |
| return err; |
| } |
| |
| struct fio_mount { |
| struct flist_head list; |
| const char *base; |
| char __base[256]; |
| unsigned int key; |
| }; |
| |
| /* |
| * Get free number of bytes for each file on each unique mount. |
| */ |
| static unsigned long long get_fs_free_counts(struct thread_data *td) |
| { |
| struct flist_head *n, *tmp; |
| unsigned long long ret = 0; |
| struct fio_mount *fm; |
| FLIST_HEAD(list); |
| struct fio_file *f; |
| unsigned int i; |
| |
| for_each_file(td, f, i) { |
| struct stat sb; |
| char buf[256]; |
| |
| if (f->filetype == FIO_TYPE_BD || f->filetype == FIO_TYPE_CHAR) { |
| if (f->real_file_size != -1ULL) |
| ret += f->real_file_size; |
| continue; |
| } else if (f->filetype != FIO_TYPE_FILE) |
| continue; |
| |
| strcpy(buf, f->file_name); |
| |
| if (stat(buf, &sb) < 0) { |
| if (errno != ENOENT) |
| break; |
| strcpy(buf, "."); |
| if (stat(buf, &sb) < 0) |
| break; |
| } |
| |
| fm = NULL; |
| flist_for_each(n, &list) { |
| fm = flist_entry(n, struct fio_mount, list); |
| if (fm->key == sb.st_dev) |
| break; |
| |
| fm = NULL; |
| } |
| |
| if (fm) |
| continue; |
| |
| fm = malloc(sizeof(*fm)); |
| strcpy(fm->__base, buf); |
| fm->base = basename(fm->__base); |
| fm->key = sb.st_dev; |
| flist_add(&fm->list, &list); |
| } |
| |
| flist_for_each_safe(n, tmp, &list) { |
| unsigned long long sz; |
| |
| fm = flist_entry(n, struct fio_mount, list); |
| flist_del(&fm->list); |
| |
| sz = get_fs_size(fm->base); |
| if (sz && sz != -1ULL) |
| ret += sz; |
| |
| free(fm); |
| } |
| |
| return ret; |
| } |
| |
| uint64_t get_start_offset(struct thread_data *td) |
| { |
| return td->o.start_offset + |
| (td->thread_number - 1) * td->o.offset_increment; |
| } |
| |
| /* |
| * Open the files and setup files sizes, creating files if necessary. |
| */ |
| int setup_files(struct thread_data *td) |
| { |
| unsigned long long total_size, extend_size; |
| struct thread_options *o = &td->o; |
| struct fio_file *f; |
| unsigned int i; |
| int err = 0, need_extend; |
| int old_state; |
| |
| dprint(FD_FILE, "setup files\n"); |
| |
| old_state = td->runstate; |
| td_set_runstate(td, TD_SETTING_UP); |
| |
| if (o->read_iolog_file) |
| goto done; |
| |
| /* |
| * if ioengine defines a setup() method, it's responsible for |
| * opening the files and setting f->real_file_size to indicate |
| * the valid range for that file. |
| */ |
| if (td->io_ops->setup) |
| err = td->io_ops->setup(td); |
| else |
| err = get_file_sizes(td); |
| |
| if (err) |
| goto err_out; |
| |
| /* |
| * check sizes. if the files/devices do not exist and the size |
| * isn't passed to fio, abort. |
| */ |
| total_size = 0; |
| for_each_file(td, f, i) { |
| if (f->real_file_size == -1ULL) |
| total_size = -1ULL; |
| else |
| total_size += f->real_file_size; |
| } |
| |
| if (o->fill_device) |
| td->fill_device_size = get_fs_free_counts(td); |
| |
| /* |
| * device/file sizes are zero and no size given, punt |
| */ |
| if ((!total_size || total_size == -1ULL) && !o->size && |
| !(td->io_ops->flags & FIO_NOIO) && !o->fill_device && |
| !(o->nr_files && (o->file_size_low || o->file_size_high))) { |
| log_err("%s: you need to specify size=\n", o->name); |
| td_verror(td, EINVAL, "total_file_size"); |
| goto err_out; |
| } |
| |
| /* |
| * now file sizes are known, so we can set ->io_size. if size= is |
| * not given, ->io_size is just equal to ->real_file_size. if size |
| * is given, ->io_size is size / nr_files. |
| */ |
| extend_size = total_size = 0; |
| need_extend = 0; |
| for_each_file(td, f, i) { |
| f->file_offset = get_start_offset(td); |
| |
| if (!o->file_size_low) { |
| /* |
| * no file size range given, file size is equal to |
| * total size divided by number of files. if that is |
| * zero, set it to the real file size. |
| */ |
| f->io_size = o->size / o->nr_files; |
| if (!f->io_size) |
| f->io_size = f->real_file_size - f->file_offset; |
| } else if (f->real_file_size < o->file_size_low || |
| f->real_file_size > o->file_size_high) { |
| if (f->file_offset > o->file_size_low) |
| goto err_offset; |
| /* |
| * file size given. if it's fixed, use that. if it's a |
| * range, generate a random size in-between. |
| */ |
| if (o->file_size_low == o->file_size_high) |
| f->io_size = o->file_size_low - f->file_offset; |
| else { |
| f->io_size = get_rand_file_size(td) |
| - f->file_offset; |
| } |
| } else |
| f->io_size = f->real_file_size - f->file_offset; |
| |
| if (f->io_size == -1ULL) |
| total_size = -1ULL; |
| else { |
| if (o->size_percent) |
| f->io_size = (f->io_size * o->size_percent) / 100; |
| total_size += f->io_size; |
| } |
| |
| if (f->filetype == FIO_TYPE_FILE && |
| (f->io_size + f->file_offset) > f->real_file_size && |
| !(td->io_ops->flags & FIO_DISKLESSIO)) { |
| if (!o->create_on_open) { |
| need_extend++; |
| extend_size += (f->io_size + f->file_offset); |
| } else |
| f->real_file_size = f->io_size + f->file_offset; |
| fio_file_set_extend(f); |
| } |
| } |
| |
| if (!o->size || o->size > total_size) |
| o->size = total_size; |
| |
| /* |
| * See if we need to extend some files |
| */ |
| if (need_extend) { |
| temp_stall_ts = 1; |
| if (output_format == FIO_OUTPUT_NORMAL) |
| log_info("%s: Laying out IO file(s) (%u file(s) /" |
| " %lluMB)\n", o->name, need_extend, |
| extend_size >> 20); |
| |
| for_each_file(td, f, i) { |
| unsigned long long old_len = -1ULL, extend_len = -1ULL; |
| |
| if (!fio_file_extend(f)) |
| continue; |
| |
| assert(f->filetype == FIO_TYPE_FILE); |
| fio_file_clear_extend(f); |
| if (!o->fill_device) { |
| old_len = f->real_file_size; |
| extend_len = f->io_size + f->file_offset - |
| old_len; |
| } |
| f->real_file_size = (f->io_size + f->file_offset); |
| err = extend_file(td, f); |
| if (err) |
| break; |
| |
| err = __file_invalidate_cache(td, f, old_len, |
| extend_len); |
| close(f->fd); |
| f->fd = -1; |
| if (err) |
| break; |
| } |
| temp_stall_ts = 0; |
| } |
| |
| if (err) |
| goto err_out; |
| |
| if (!o->zone_size) |
| o->zone_size = o->size; |
| |
| /* |
| * iolog already set the total io size, if we read back |
| * stored entries. |
| */ |
| if (!o->read_iolog_file) |
| td->total_io_size = o->size * o->loops; |
| |
| done: |
| if (o->create_only) |
| td->done = 1; |
| |
| td_set_runstate(td, old_state); |
| return 0; |
| err_offset: |
| log_err("%s: you need to specify valid offset=\n", o->name); |
| err_out: |
| td_set_runstate(td, old_state); |
| return 1; |
| } |
| |
| int pre_read_files(struct thread_data *td) |
| { |
| struct fio_file *f; |
| unsigned int i; |
| |
| dprint(FD_FILE, "pre_read files\n"); |
| |
| for_each_file(td, f, i) { |
| pre_read_file(td, f); |
| } |
| |
| return 1; |
| } |
| |
| static int __init_rand_distribution(struct thread_data *td, struct fio_file *f) |
| { |
| unsigned int range_size, seed; |
| unsigned long nranges; |
| uint64_t file_size; |
| |
| range_size = min(td->o.min_bs[DDIR_READ], td->o.min_bs[DDIR_WRITE]); |
| file_size = min(f->real_file_size, f->io_size); |
| |
| nranges = (file_size + range_size - 1) / range_size; |
| |
| seed = jhash(f->file_name, strlen(f->file_name), 0) * td->thread_number; |
| if (!td->o.rand_repeatable) |
| seed = td->rand_seeds[4]; |
| |
| if (td->o.random_distribution == FIO_RAND_DIST_ZIPF) |
| zipf_init(&f->zipf, nranges, td->o.zipf_theta.u.f, seed); |
| else |
| pareto_init(&f->zipf, nranges, td->o.pareto_h.u.f, seed); |
| |
| return 1; |
| } |
| |
| static int init_rand_distribution(struct thread_data *td) |
| { |
| struct fio_file *f; |
| unsigned int i; |
| int state; |
| |
| if (td->o.random_distribution == FIO_RAND_DIST_RANDOM) |
| return 0; |
| |
| state = td->runstate; |
| td_set_runstate(td, TD_SETTING_UP); |
| for_each_file(td, f, i) |
| __init_rand_distribution(td, f); |
| td_set_runstate(td, state); |
| |
| return 1; |
| } |
| |
| int init_random_map(struct thread_data *td) |
| { |
| unsigned long long blocks; |
| struct fio_file *f; |
| unsigned int i; |
| |
| if (init_rand_distribution(td)) |
| return 0; |
| if (!td_random(td)) |
| return 0; |
| |
| for_each_file(td, f, i) { |
| uint64_t file_size = min(f->real_file_size, f->io_size); |
| |
| blocks = file_size / (unsigned long long) td->o.rw_min_bs; |
| |
| if (td->o.random_generator == FIO_RAND_GEN_LFSR) { |
| unsigned long seed; |
| |
| seed = td->rand_seeds[FIO_RAND_BLOCK_OFF]; |
| |
| if (!lfsr_init(&f->lfsr, blocks, seed, seed & 0xF)) |
| continue; |
| } else if (!td->o.norandommap) { |
| f->io_axmap = axmap_new(blocks); |
| if (f->io_axmap) |
| continue; |
| } else if (td->o.norandommap) |
| continue; |
| |
| if (!td->o.softrandommap) { |
| log_err("fio: failed allocating random map. If running" |
| " a large number of jobs, try the 'norandommap'" |
| " option or set 'softrandommap'. Or give" |
| " a larger --alloc-size to fio.\n"); |
| return 1; |
| } |
| |
| log_info("fio: file %s failed allocating random map. Running " |
| "job without.\n", f->file_name); |
| } |
| |
| return 0; |
| } |
| |
| void close_files(struct thread_data *td) |
| { |
| struct fio_file *f; |
| unsigned int i; |
| |
| for_each_file(td, f, i) { |
| if (fio_file_open(f)) |
| td_io_close_file(td, f); |
| } |
| } |
| |
| void close_and_free_files(struct thread_data *td) |
| { |
| struct fio_file *f; |
| unsigned int i; |
| |
| dprint(FD_FILE, "close files\n"); |
| |
| for_each_file(td, f, i) { |
| if (td->o.unlink && f->filetype == FIO_TYPE_FILE) { |
| dprint(FD_FILE, "free unlink %s\n", f->file_name); |
| unlink(f->file_name); |
| } |
| |
| if (fio_file_open(f)) |
| td_io_close_file(td, f); |
| |
| remove_file_hash(f); |
| |
| sfree(f->file_name); |
| f->file_name = NULL; |
| axmap_free(f->io_axmap); |
| f->io_axmap = NULL; |
| sfree(f); |
| } |
| |
| td->o.filename = NULL; |
| free(td->files); |
| free(td->file_locks); |
| td->files_index = 0; |
| td->files = NULL; |
| td->file_locks = NULL; |
| td->o.nr_files = 0; |
| } |
| |
| static void get_file_type(struct fio_file *f) |
| { |
| struct stat sb; |
| |
| if (!strcmp(f->file_name, "-")) |
| f->filetype = FIO_TYPE_PIPE; |
| else |
| f->filetype = FIO_TYPE_FILE; |
| |
| /* \\.\ is the device namespace in Windows, where every file is |
| * a block device */ |
| if (strncmp(f->file_name, "\\\\.\\", 4) == 0) |
| f->filetype = FIO_TYPE_BD; |
| |
| if (!stat(f->file_name, &sb)) { |
| if (S_ISBLK(sb.st_mode)) |
| f->filetype = FIO_TYPE_BD; |
| else if (S_ISCHR(sb.st_mode)) |
| f->filetype = FIO_TYPE_CHAR; |
| else if (S_ISFIFO(sb.st_mode)) |
| f->filetype = FIO_TYPE_PIPE; |
| } |
| } |
| |
| int add_file(struct thread_data *td, const char *fname) |
| { |
| int cur_files = td->files_index; |
| char file_name[PATH_MAX]; |
| struct fio_file *f; |
| int len = 0; |
| |
| dprint(FD_FILE, "add file %s\n", fname); |
| |
| f = smalloc(sizeof(*f)); |
| if (!f) { |
| log_err("fio: smalloc OOM\n"); |
| assert(0); |
| } |
| |
| f->fd = -1; |
| f->shadow_fd = -1; |
| fio_file_reset(td, f); |
| |
| if (td->files_size <= td->files_index) { |
| unsigned int new_size = td->o.nr_files + 1; |
| |
| dprint(FD_FILE, "resize file array to %d files\n", new_size); |
| |
| td->files = realloc(td->files, new_size * sizeof(f)); |
| if (td->files == NULL) { |
| log_err("fio: realloc OOM\n"); |
| assert(0); |
| } |
| if (td->o.file_lock_mode != FILE_LOCK_NONE) { |
| td->file_locks = realloc(td->file_locks, new_size); |
| if (!td->file_locks) { |
| log_err("fio: realloc OOM\n"); |
| assert(0); |
| } |
| td->file_locks[cur_files] = FILE_LOCK_NONE; |
| } |
| td->files_size = new_size; |
| } |
| td->files[cur_files] = f; |
| f->fileno = cur_files; |
| |
| /* |
| * init function, io engine may not be loaded yet |
| */ |
| if (td->io_ops && (td->io_ops->flags & FIO_DISKLESSIO)) |
| f->real_file_size = -1ULL; |
| |
| if (td->o.directory) |
| len = sprintf(file_name, "%s/", td->o.directory); |
| |
| sprintf(file_name + len, "%s", fname); |
| f->file_name = smalloc_strdup(file_name); |
| if (!f->file_name) { |
| log_err("fio: smalloc OOM\n"); |
| assert(0); |
| } |
| |
| get_file_type(f); |
| |
| switch (td->o.file_lock_mode) { |
| case FILE_LOCK_NONE: |
| break; |
| case FILE_LOCK_READWRITE: |
| f->rwlock = fio_rwlock_init(); |
| break; |
| case FILE_LOCK_EXCLUSIVE: |
| f->lock = fio_mutex_init(FIO_MUTEX_UNLOCKED); |
| break; |
| default: |
| log_err("fio: unknown lock mode: %d\n", td->o.file_lock_mode); |
| assert(0); |
| } |
| |
| td->files_index++; |
| if (f->filetype == FIO_TYPE_FILE) |
| td->nr_normal_files++; |
| |
| dprint(FD_FILE, "file %p \"%s\" added at %d\n", f, f->file_name, |
| cur_files); |
| |
| return cur_files; |
| } |
| |
| int add_file_exclusive(struct thread_data *td, const char *fname) |
| { |
| struct fio_file *f; |
| unsigned int i; |
| |
| for_each_file(td, f, i) { |
| if (!strcmp(f->file_name, fname)) |
| return i; |
| } |
| |
| return add_file(td, fname); |
| } |
| |
| void get_file(struct fio_file *f) |
| { |
| dprint(FD_FILE, "get file %s, ref=%d\n", f->file_name, f->references); |
| assert(fio_file_open(f)); |
| f->references++; |
| } |
| |
| int put_file(struct thread_data *td, struct fio_file *f) |
| { |
| int f_ret = 0, ret = 0; |
| |
| dprint(FD_FILE, "put file %s, ref=%d\n", f->file_name, f->references); |
| |
| if (!fio_file_open(f)) { |
| assert(f->fd == -1); |
| return 0; |
| } |
| |
| assert(f->references); |
| if (--f->references) |
| return 0; |
| |
| if (should_fsync(td) && td->o.fsync_on_close) |
| f_ret = fsync(f->fd); |
| |
| if (td->io_ops->close_file) |
| ret = td->io_ops->close_file(td, f); |
| |
| if (!ret) |
| ret = f_ret; |
| |
| td->nr_open_files--; |
| fio_file_clear_open(f); |
| assert(f->fd == -1); |
| return ret; |
| } |
| |
| void lock_file(struct thread_data *td, struct fio_file *f, enum fio_ddir ddir) |
| { |
| if (!f->lock || td->o.file_lock_mode == FILE_LOCK_NONE) |
| return; |
| |
| if (td->o.file_lock_mode == FILE_LOCK_READWRITE) { |
| if (ddir == DDIR_READ) |
| fio_rwlock_read(f->rwlock); |
| else |
| fio_rwlock_write(f->rwlock); |
| } else if (td->o.file_lock_mode == FILE_LOCK_EXCLUSIVE) |
| fio_mutex_down(f->lock); |
| |
| td->file_locks[f->fileno] = td->o.file_lock_mode; |
| } |
| |
| void unlock_file(struct thread_data *td, struct fio_file *f) |
| { |
| if (!f->lock || td->o.file_lock_mode == FILE_LOCK_NONE) |
| return; |
| |
| if (td->o.file_lock_mode == FILE_LOCK_READWRITE) |
| fio_rwlock_unlock(f->rwlock); |
| else if (td->o.file_lock_mode == FILE_LOCK_EXCLUSIVE) |
| fio_mutex_up(f->lock); |
| |
| td->file_locks[f->fileno] = FILE_LOCK_NONE; |
| } |
| |
| void unlock_file_all(struct thread_data *td, struct fio_file *f) |
| { |
| if (td->file_locks[f->fileno] != FILE_LOCK_NONE) |
| unlock_file(td, f); |
| } |
| |
| static int recurse_dir(struct thread_data *td, const char *dirname) |
| { |
| struct dirent *dir; |
| int ret = 0; |
| DIR *D; |
| |
| D = opendir(dirname); |
| if (!D) { |
| char buf[FIO_VERROR_SIZE]; |
| |
| snprintf(buf, FIO_VERROR_SIZE, "opendir(%s)", dirname); |
| td_verror(td, errno, buf); |
| return 1; |
| } |
| |
| while ((dir = readdir(D)) != NULL) { |
| char full_path[PATH_MAX]; |
| struct stat sb; |
| |
| if (!strcmp(dir->d_name, ".") || !strcmp(dir->d_name, "..")) |
| continue; |
| |
| sprintf(full_path, "%s%s%s", dirname, FIO_OS_PATH_SEPARATOR, dir->d_name); |
| |
| if (lstat(full_path, &sb) == -1) { |
| if (errno != ENOENT) { |
| td_verror(td, errno, "stat"); |
| return 1; |
| } |
| } |
| |
| if (S_ISREG(sb.st_mode)) { |
| add_file(td, full_path); |
| td->o.nr_files++; |
| continue; |
| } |
| if (!S_ISDIR(sb.st_mode)) |
| continue; |
| |
| ret = recurse_dir(td, full_path); |
| if (ret) |
| break; |
| } |
| |
| closedir(D); |
| return ret; |
| } |
| |
| int add_dir_files(struct thread_data *td, const char *path) |
| { |
| int ret = recurse_dir(td, path); |
| |
| if (!ret) |
| log_info("fio: opendir added %d files\n", td->o.nr_files); |
| |
| return ret; |
| } |
| |
| void dup_files(struct thread_data *td, struct thread_data *org) |
| { |
| struct fio_file *f; |
| unsigned int i; |
| |
| dprint(FD_FILE, "dup files: %d\n", org->files_index); |
| |
| if (!org->files) |
| return; |
| |
| td->files = malloc(org->files_index * sizeof(f)); |
| |
| if (td->o.file_lock_mode != FILE_LOCK_NONE) |
| td->file_locks = malloc(org->files_index); |
| |
| for_each_file(org, f, i) { |
| struct fio_file *__f; |
| |
| __f = smalloc(sizeof(*__f)); |
| if (!__f) { |
| log_err("fio: smalloc OOM\n"); |
| assert(0); |
| } |
| __f->fd = -1; |
| fio_file_reset(td, __f); |
| |
| if (f->file_name) { |
| __f->file_name = smalloc_strdup(f->file_name); |
| if (!__f->file_name) { |
| log_err("fio: smalloc OOM\n"); |
| assert(0); |
| } |
| |
| __f->filetype = f->filetype; |
| } |
| |
| td->files[i] = __f; |
| } |
| } |
| |
| /* |
| * Returns the index that matches the filename, or -1 if not there |
| */ |
| int get_fileno(struct thread_data *td, const char *fname) |
| { |
| struct fio_file *f; |
| unsigned int i; |
| |
| for_each_file(td, f, i) |
| if (!strcmp(f->file_name, fname)) |
| return i; |
| |
| return -1; |
| } |
| |
| /* |
| * For log usage, where we add/open/close files automatically |
| */ |
| void free_release_files(struct thread_data *td) |
| { |
| close_files(td); |
| td->files_index = 0; |
| td->nr_normal_files = 0; |
| } |
| |
| void fio_file_reset(struct thread_data *td, struct fio_file *f) |
| { |
| f->last_pos = f->file_offset; |
| f->last_start = -1ULL; |
| if (f->io_axmap) |
| axmap_reset(f->io_axmap); |
| if (td->o.random_generator == FIO_RAND_GEN_LFSR) |
| lfsr_reset(&f->lfsr, td->rand_seeds[FIO_RAND_BLOCK_OFF]); |
| } |