#include <fcntl.h>
#include <string.h>
#include <assert.h>
+#include <dirent.h>
#include <sys/stat.h>
#include <sys/mman.h>
+#include <sys/types.h>
#include "fio.h"
-#include "os.h"
-/*
- * Check if the file exists and it's large enough.
- */
-static int file_ok(struct thread_data *td, struct fio_file *f)
-{
- struct stat st;
-
- if (td->filetype != FIO_TYPE_FILE)
- return 0;
-
- if (stat(f->file_name, &st) == -1)
- return 1;
- else if (st.st_size < (off_t) f->file_size)
- return 1;
-
- return 0;
-}
-
-static int create_file(struct thread_data *td, struct fio_file *f)
+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;
- int r;
- f->fd = open(f->file_name, O_WRONLY | O_CREAT | O_TRUNC, 0644);
+ /*
+ * 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))
+ new_layout = 1;
+ if (td_write(td) && !td->o.overwrite)
+ unlink_file = 1;
+
+ if ((unlink_file || new_layout) && (f->flags & FIO_FILE_EXISTS)) {
+ if (unlink(f->file_name) < 0) {
+ td_verror(td, errno, "unlink");
+ return 1;
+ }
+ }
+
+ flags = O_WRONLY | O_CREAT;
+ if (new_layout)
+ flags |= O_TRUNC;
+
+ f->fd = open(f->file_name, flags, 0644);
if (f->fd < 0) {
- td_verror(td, errno);
+ td_verror(td, errno, "open");
return 1;
}
- if (ftruncate(f->fd, f->file_size) == -1) {
- td_verror(td, errno);
+ if (ftruncate(f->fd, f->real_file_size) == -1) {
+ td_verror(td, errno, "ftruncate");
goto err;
}
- if (posix_fallocate(f->fd, 0, f->file_size) < 0) {
- td_verror(td, errno);
+ if (!new_layout)
+ goto done;
+
+ if (posix_fallocate(f->fd, 0, f->real_file_size) < 0) {
+ td_verror(td, errno, "posix_fallocate");
goto err;
}
- b = malloc(td->max_bs[DDIR_WRITE]);
- memset(b, 0, td->max_bs[DDIR_WRITE]);
+ b = malloc(td->o.max_bs[DDIR_WRITE]);
+ memset(b, 0, td->o.max_bs[DDIR_WRITE]);
- left = f->file_size;
+ left = f->real_file_size;
while (left && !td->terminate) {
- bs = td->max_bs[DDIR_WRITE];
+ bs = td->o.max_bs[DDIR_WRITE];
if (bs > left)
bs = left;
continue;
} else {
if (r < 0)
- td_verror(td, errno);
+ td_verror(td, errno, "write");
else
- td_verror(td, EIO);
+ td_verror(td, EIO, "write");
break;
}
if (td->terminate)
unlink(f->file_name);
- else if (td->create_fsync)
+ else if (td->o.create_fsync)
fsync(f->fd);
free(b);
+done:
close(f->fd);
f->fd = -1;
return 0;
return 1;
}
-static int create_files(struct thread_data *td)
+static unsigned long long get_rand_file_size(struct thread_data *td)
{
- struct fio_file *f;
- int i, err, need_create;
+ unsigned long long ret;
+ long r;
- for_each_file(td, f, i)
- f->file_size = td->total_file_size / td->nr_files;
-
- /*
- * unless specifically asked for overwrite, let normal io extend it
- */
- if (!td->overwrite)
- return 0;
-
- need_create = 0;
- if (td->filetype == FIO_TYPE_FILE)
- for_each_file(td, f, i)
- need_create += file_ok(td, f);
-
- if (!need_create)
- return 0;
-
- if (!td->total_file_size) {
- log_err("Need size for create\n");
- td_verror(td, EINVAL);
- return 1;
- }
-
- temp_stall_ts = 1;
- fprintf(f_out, "%s: Laying out IO file(s) (%u x %LuMiB == %LuMiB)\n",
- td->name, td->nr_uniq_files,
- (td->total_file_size >> 20) / td->nr_uniq_files,
- td->total_file_size >> 20);
-
- err = 0;
- for_each_file(td, f, i) {
- /*
- * Only unlink files that we created.
- */
- f->unlink = 0;
- if (file_ok(td, f)) {
- f->unlink = td->unlink;
- err = create_file(td, f);
- if (err)
- break;
- }
- }
-
- temp_stall_ts = 0;
- return err;
+ r = os_random_long(&td->file_size_state);
+ ret = td->o.file_size_low + (unsigned long long) ((double) td->o.file_size_high * (r / (RAND_MAX + 1.0)));
+ 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 (td->overwrite) {
- if (fstat(f->fd, &st) == -1) {
- td_verror(td, errno);
- return 1;
- }
-
- f->real_file_size = st.st_size;
-
- if (!f->file_size || f->file_size > f->real_file_size)
- f->file_size = f->real_file_size;
+ if (fstat(f->fd, &st) == -1) {
+ td_verror(td, errno, "fstat");
+ return 1;
}
- f->file_size -= f->file_offset;
+ f->real_file_size = st.st_size;
return 0;
}
r = blockdev_size(f->fd, &bytes);
if (r) {
- td_verror(td, r);
+ td_verror(td, r, "blockdev_size");
return 1;
}
f->real_file_size = bytes;
-
- /*
- * no extend possibilities, so limit size to device size if too large
- */
- if (!f->file_size || f->file_size > f->real_file_size)
- f->file_size = f->real_file_size;
-
- f->file_size -= f->file_offset;
return 0;
}
{
int ret = 0;
- if (td->filetype == FIO_TYPE_FILE)
+ if (f->flags & FIO_SIZE_KNOWN)
+ return 0;
+
+ if (f->filetype == FIO_TYPE_FILE)
ret = file_size(td, f);
- else if (td->filetype == FIO_TYPE_BD)
+ else if (f->filetype == FIO_TYPE_BD)
ret = bdev_size(td, f);
else
f->real_file_size = -1;
return ret;
if (f->file_offset > f->real_file_size) {
- log_err("%s: offset extends end (%Lu > %Lu)\n", td->name, f->file_offset, f->real_file_size);
+ log_err("%s: offset extends end (%Lu > %Lu)\n", td->o.name, f->file_offset, f->real_file_size);
return 1;
}
+ f->flags |= FIO_SIZE_KNOWN;
return 0;
}
{
int ret = 0;
+ if (td->o.odirect)
+ return 0;
+
/*
* FIXME: add blockdev flushing too
*/
- if (td->io_ops->flags & FIO_MMAPIO)
- ret = madvise(f->mmap, f->file_size, MADV_DONTNEED);
- else if (td->filetype == FIO_TYPE_FILE)
- ret = fadvise(f->fd, f->file_offset, f->file_size, POSIX_FADV_DONTNEED);
- else if (td->filetype == FIO_TYPE_BD)
+ if (f->mmap)
+ ret = madvise(f->mmap, f->io_size, MADV_DONTNEED);
+ else if (f->filetype == FIO_TYPE_FILE)
+ ret = fadvise(f->fd, f->file_offset, f->io_size, POSIX_FADV_DONTNEED);
+ else if (f->filetype == FIO_TYPE_BD) {
ret = blockdev_invalidate_cache(f->fd);
- else if (td->filetype == FIO_TYPE_CHAR)
+ if (ret < 0 && errno == EACCES && geteuid()) {
+ log_err("fio: only root may flush block devices. Cache flush bypassed!\n");
+ ret = 0;
+ }
+ } else if (f->filetype == FIO_TYPE_CHAR)
ret = 0;
if (ret < 0) {
- td_verror(td, errno);
- return 1;
- }
-
- return 0;
-}
-
-static int __setup_file_mmap(struct thread_data *td, struct fio_file *f)
-{
- int flags;
-
- if (td_rw(td))
- flags = PROT_READ | PROT_WRITE;
- else if (td_write(td)) {
- flags = PROT_WRITE;
-
- if (td->verify != VERIFY_NONE)
- flags |= PROT_READ;
- } else
- flags = PROT_READ;
-
- f->mmap = mmap(NULL, f->file_size, flags, MAP_SHARED, f->fd, f->file_offset);
- if (f->mmap == MAP_FAILED) {
- f->mmap = NULL;
- td_verror(td, errno);
- return 1;
- }
-
- if (td->invalidate_cache && file_invalidate_cache(td, f))
+ td_verror(td, errno, "invalidate_cache");
return 1;
-
- if (td->sequential) {
- if (madvise(f->mmap, f->file_size, MADV_SEQUENTIAL) < 0) {
- td_verror(td, errno);
- return 1;
- }
- } else {
- if (madvise(f->mmap, f->file_size, MADV_RANDOM) < 0) {
- td_verror(td, errno);
- return 1;
- }
}
- return 0;
+ return ret;
}
-static int setup_files_mmap(struct thread_data *td)
+void generic_close_file(struct thread_data fio_unused *td, struct fio_file *f)
{
- struct fio_file *f;
- int i, err = 0;
-
- for_each_file(td, f, i) {
- err = __setup_file_mmap(td, f);
- if (err)
- break;
- }
-
- return err;
-}
-
-static int __setup_file_plain(struct thread_data *td, struct fio_file *f)
-{
- if (td->invalidate_cache && file_invalidate_cache(td, f))
- return 1;
-
- if (td->sequential) {
- if (fadvise(f->fd, f->file_offset, f->file_size, POSIX_FADV_SEQUENTIAL) < 0) {
- td_verror(td, errno);
- return 1;
- }
- } else {
- if (fadvise(f->fd, f->file_offset, f->file_size, POSIX_FADV_RANDOM) < 0) {
- td_verror(td, errno);
- return 1;
- }
- }
-
- return 0;
-}
-
-static int setup_files_plain(struct thread_data *td)
-{
- struct fio_file *f;
- int i, err = 0;
-
- for_each_file(td, f, i) {
- err = __setup_file_plain(td, f);
- if (err)
- break;
- }
-
- return err;
+ close(f->fd);
+ f->fd = -1;
}
-static int setup_file(struct thread_data *td, struct fio_file *f)
+int generic_open_file(struct thread_data *td, struct fio_file *f)
{
int flags = 0;
- if (td->odirect)
+ if (td->o.odirect)
flags |= OS_O_DIRECT;
- if (td->sync_io)
+ if (td->o.sync_io)
flags |= O_SYNC;
if (td_write(td) || td_rw(td)) {
flags |= O_RDWR;
- if (td->filetype == FIO_TYPE_FILE) {
- if (!td->overwrite)
- flags |= O_TRUNC;
-
+ if (f->filetype == FIO_TYPE_FILE)
flags |= O_CREAT;
- }
f->fd = open(f->file_name, flags, 0600);
} else {
- if (td->filetype == FIO_TYPE_CHAR)
+ if (f->filetype == FIO_TYPE_CHAR)
flags |= O_RDWR;
else
flags |= O_RDONLY;
}
if (f->fd == -1) {
- td_verror(td, errno);
- return 1;
+ char buf[FIO_VERROR_SIZE];
+ int __e = errno;
+
+ snprintf(buf, sizeof(buf) - 1, "open(%s)", f->file_name);
+
+ td_verror(td, __e, buf);
}
if (get_file_size(td, f))
- return 1;
+ goto err;
return 0;
+err:
+ close(f->fd);
+ return 1;
}
int open_files(struct thread_data *td)
{
struct fio_file *f;
- int i, err = 0;
+ unsigned int i;
+ int err = 0;
for_each_file(td, f, i) {
- err = setup_file(td, f);
- if (err)
+ err = td_io_open_file(td, f);
+ if (err) {
+ if (td->error == EMFILE) {
+ log_err("fio: limited open files to: %d\n", td->nr_open_files);
+ td->o.open_files = td->nr_open_files;
+ err = 0;
+ clear_error(td);
+ }
+ break;
+ }
+
+ if (td->o.open_files == td->nr_open_files)
break;
}
if (!err)
return 0;
+ for_each_file(td, f, i)
+ td_io_close_file(td, f);
+
+ return err;
+}
+
+/*
+ * 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) {
- if (f->fd != -1) {
- close(f->fd);
- f->fd = -1;
+ if (td->io_ops->open_file(td, f)) {
+ if (td->error != ENOENT) {
+ log_err("%s\n", td->verror);
+ err = 1;
+ }
+ clear_error(td);
+ } else {
+ if (td->io_ops->close_file)
+ td->io_ops->close_file(td, f);
}
+
+ if (f->real_file_size == -1ULL && td->o.size)
+ f->real_file_size = td->o.size / td->o.nr_files;
}
return err;
}
+/*
+ * 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 fio_file *f;
- int err, i;
+ unsigned int i;
+ int err = 0, need_extend;
/*
* if ioengine defines a setup() method, it's responsible for
- * setting up everything in the td->files[] area.
+ * opening the files and setting f->real_file_size to indicate
+ * the valid range for that file.
*/
if (td->io_ops->setup)
- return td->io_ops->setup(td);
-
- if (create_files(td))
- return 1;
+ err = td->io_ops->setup(td);
+ else
+ err = get_file_sizes(td);
- err = open_files(td);
if (err)
return err;
/*
- * Recalculate the total file size now that files are set up.
+ * check sizes. if the files/devices do not exist and the size
+ * isn't passed to fio, abort.
*/
- td->total_file_size = 0;
- for_each_file(td, f, i)
- td->total_file_size += f->file_size;
+ 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;
+ }
- td->io_size = td->total_file_size;
- if (td->io_size == 0) {
- log_err("%s: no io blocks\n", td->name);
- td_verror(td, EINVAL);
+ /*
+ * device/file sizes are zero and no size given, punt
+ */
+ if ((!total_size || total_size == -1ULL) && !td->o.size) {
+ log_err("%s: you need to specify size=\n", td->o.name);
+ td_verror(td, EINVAL, "total_file_size");
return 1;
}
- if (!td->zone_size)
- td->zone_size = td->io_size;
+ /*
+ * 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) {
+ if (!td->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 = td->o.size / td->o.nr_files;
+ if (!f->io_size)
+ f->io_size = f->real_file_size;
+ } else if (f->real_file_size < td->o.file_size_low ||
+ f->real_file_size > td->o.file_size_high) {
+ /*
+ * file size given. if it's fixed, use that. if it's a
+ * range, generate a random size in-between.
+ */
+ if (td->o.file_size_low == td->o.file_size_high)
+ f->io_size = td->o.file_size_low;
+ else
+ f->io_size = get_rand_file_size(td);
+ } else
+ f->io_size = f->real_file_size;
- td->total_io_size = td->io_size * td->loops;
+ if (f->io_size == -1ULL)
+ total_size = -1ULL;
+ else
+ total_size += f->io_size;
+
+ if (f->filetype == FIO_TYPE_FILE &&
+ f->io_size > f->real_file_size &&
+ !(td->io_ops->flags & FIO_DISKLESSIO)) {
+ need_extend++;
+ extend_size += f->io_size;
+ f->flags |= FIO_FILE_EXTEND;
+ }
+ }
- if (td->io_ops->flags & FIO_MMAPIO)
- err = setup_files_mmap(td);
- else
- err = setup_files_plain(td);
+ if (!td->o.size)
+ td->o.size = total_size;
+
+ /*
+ * See if we need to extend some files
+ */
+ if (need_extend) {
+ temp_stall_ts = 1;
+ log_info("%s: Laying out IO file(s) (%u files / %LuMiB)\n",
+ td->o.name, need_extend, extend_size >> 20);
+
+ for_each_file(td, f, i) {
+ if (!(f->flags & FIO_FILE_EXTEND))
+ continue;
+
+ assert(f->filetype == FIO_TYPE_FILE);
+ f->flags &= ~FIO_FILE_EXTEND;
+ f->real_file_size = f->io_size;
+ err = extend_file(td, f);
+ if (err)
+ break;
+ }
+ temp_stall_ts = 0;
+ }
+
+ if (err)
+ return err;
+
+ if (!td->o.zone_size)
+ td->o.zone_size = td->o.size;
+
+ td->total_io_size = td->o.size * td->o.loops;
+ return 0;
+}
+
+int init_random_map(struct thread_data *td)
+{
+ int num_maps, blocks;
+ struct fio_file *f;
+ unsigned int i;
+
+ if (td->o.norandommap)
+ return 0;
for_each_file(td, f, i) {
- if (f->fd != -1) {
- close(f->fd);
- f->fd = -1;
+ blocks = (f->real_file_size + td->o.rw_min_bs - 1) / td->o.rw_min_bs;
+ num_maps = (blocks + BLOCKS_PER_MAP-1)/ BLOCKS_PER_MAP;
+ f->file_map = malloc(num_maps * sizeof(long));
+ if (!f->file_map) {
+ log_err("fio: failed allocating random map. If running a large number of jobs, try the 'norandommap' option\n");
+ return 1;
}
+ f->num_maps = num_maps;
+ memset(f->file_map, 0, num_maps * sizeof(long));
}
- return err;
+ return 0;
}
void close_files(struct thread_data *td)
{
struct fio_file *f;
- int i;
+ unsigned int i;
for_each_file(td, f, i) {
- if (!td->filename && f->unlink &&
- td->filetype == FIO_TYPE_FILE) {
+ if ((f->flags & FIO_FILE_UNLINK) &&
+ f->filetype == FIO_TYPE_FILE)
unlink(f->file_name);
- free(f->file_name);
- f->file_name = NULL;
- }
- if (f->fd != -1) {
- close(f->fd);
- f->fd = -1;
- }
- if (f->mmap) {
- munmap(f->mmap, f->file_size);
- f->mmap = NULL;
+
+ td_io_close_file(td, f);
+
+ free(f->file_name);
+ f->file_name = NULL;
+
+ if (f->file_map) {
+ free(f->file_map);
+ f->file_map = NULL;
}
}
- td->filename = NULL;
+ td->o.filename = NULL;
free(td->files);
td->files = NULL;
- td->nr_files = 0;
+ td->o.nr_files = 0;
+}
+
+static void get_file_type(struct fio_file *f)
+{
+ struct stat sb;
+
+ f->filetype = FIO_TYPE_FILE;
+
+ if (!lstat(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;
+ }
+}
+
+void 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;
+
+ td->files = realloc(td->files, (cur_files + 1) * sizeof(*f));
+
+ f = &td->files[cur_files];
+ memset(f, 0, sizeof(*f));
+ f->fd = -1;
+
+ /*
+ * 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 = strdup(file_name);
+
+ get_file_type(f);
+
+ td->files_index++;
+ if (f->filetype == FIO_TYPE_FILE)
+ td->nr_normal_files++;
+}
+
+void get_file(struct fio_file *f)
+{
+ f->references++;
+}
+
+void put_file(struct thread_data *td, struct fio_file *f)
+{
+ if (!(f->flags & FIO_FILE_OPEN))
+ return;
+
+ assert(f->references);
+ if (--f->references)
+ return;
+
+ if (should_fsync(td) && td->o.fsync_on_close)
+ fsync(f->fd);
+
+ if (td->io_ops->close_file)
+ td->io_ops->close_file(td, f);
+
+ td->nr_open_files--;
+ f->flags &= ~FIO_FILE_OPEN;
+}
+
+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 - 1, "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", dirname, 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;
+
+ if ((ret = recurse_dir(td, full_path)) != 0)
+ 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;
+ size_t bytes;
+
+ if (!org->files)
+ return;
+
+ bytes = org->files_index * sizeof(*f);
+ td->files = malloc(bytes);
+ memcpy(td->files, org->files, bytes);
+
+ for_each_file(td, f, i) {
+ if (f->file_name)
+ f->file_name = strdup(f->file_name);
+ }
}
projects / fio.git / blobdiff