[fio.git] / filesetup.c

#include <unistd.h>
#include <fcntl.h>
#include <string.h>
#include <assert.h>
#include <sys/stat.h>
#include <sys/mman.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 (f->filetype != FIO_TYPE_FILE ||
	    (td->io_ops->flags & FIO_DISKLESSIO))
		return 0;

	if (lstat(f->file_name, &st) == -1)
		return 1;

	/*
	 * if it's a special file, size is always ok for now
	 */
	if (S_ISCHR(st.st_mode) || S_ISBLK(st.st_mode))
		return 0;
	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)
{
	unsigned long long left;
	unsigned int bs;
	char *b;
	int r;

	f->fd = open(f->file_name, O_WRONLY | O_CREAT | O_TRUNC, 0644);
	if (f->fd < 0) {
		td_verror(td, errno, "open");
		return 1;
	}

	if (ftruncate(f->fd, f->file_size) == -1) {
		td_verror(td, errno, "ftruncate");
		goto err;
	}

	if (posix_fallocate(f->fd, 0, f->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]);

	left = f->file_size;
	while (left && !td->terminate) {
		bs = td->max_bs[DDIR_WRITE];
		if (bs > left)
			bs = left;

		r = write(f->fd, b, bs);

		if (r == (int) bs) {
			left -= bs;
			continue;
		} else {
			if (r < 0)
				td_verror(td, errno, "write");
			else
				td_verror(td, EIO, "write");

			break;
		}
	}

	if (td->terminate)
		unlink(f->file_name);
	else if (td->create_fsync)
		fsync(f->fd);

	free(b);
	close(f->fd);
	f->fd = -1;
	return 0;
err:
	close(f->fd);
	f->fd = -1;
	return 1;
}

static int create_files(struct thread_data *td)
{
	struct fio_file *f;
	int err, need_create, can_extend;
	unsigned int i;

	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
	 */
	can_extend = !td->overwrite && !(td->io_ops->flags & FIO_NOEXTEND);
	if (can_extend)
		return 0;

	need_create = 0;
	for_each_file(td, f, i) {
		int file_there;

		if (f->filetype != FIO_TYPE_FILE)
			continue;

		file_there = !file_ok(td, f);

		if (file_there && td_write(td) && !td->overwrite) {
			unlink(f->file_name);
			file_there = 0;
		}

		need_create += !file_there;
	}

	if (!need_create)
		return 0;

	if (!td->total_file_size) {
		log_err("Need size for create\n");
		td_verror(td, EINVAL, "file_size");
		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->flags &= ~FIO_FILE_UNLINK;
		if (file_ok(td, f)) {
			if (td->unlink)
				f->flags |= FIO_FILE_UNLINK;

			err = create_file(td, f);
			if (err)
				break;
		}
	}

	temp_stall_ts = 0;
	return err;
}

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, "fstat");
			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;
	} else
		f->real_file_size = f->file_size;

	return 0;
}

static int bdev_size(struct thread_data *td, struct fio_file *f)
{
	unsigned long long bytes;
	int r;

	r = blockdev_size(f->fd, &bytes);
	if (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;
}

static int get_file_size(struct thread_data *td, struct fio_file *f)
{
	int ret = 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
		f->real_file_size = -1;

	if (ret)
		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);
		return 1;
	}

	return 0;
}

int file_invalidate_cache(struct thread_data *td, struct fio_file *f)
{
	int ret = 0;

	if (td->odirect)
		return 0;

	/*
	 * FIXME: add blockdev flushing too
	 */
	if (f->mmap)
		ret = madvise(f->mmap, f->file_size, MADV_DONTNEED);
	else if (f->filetype == FIO_TYPE_FILE) {
		ret = fadvise(f->fd, f->file_offset, f->file_size, POSIX_FADV_DONTNEED);
	} else if (f->filetype == FIO_TYPE_BD) {
		ret = blockdev_invalidate_cache(f->fd);
	} else if (f->filetype == FIO_TYPE_CHAR)
		ret = 0;

	if (ret < 0) {
		td_verror(td, errno, "invalidate_cache");
		return 1;
	}

	return ret;
}

void generic_close_file(struct thread_data fio_unused *td, struct fio_file *f)
{
	close(f->fd);
	f->fd = -1;
}

int generic_open_file(struct thread_data *td, struct fio_file *f)
{
	int flags = 0;

	if (td->odirect)
		flags |= OS_O_DIRECT;
	if (td->sync_io)
		flags |= O_SYNC;

	if (td_write(td) || td_rw(td)) {
		flags |= O_RDWR;

		if (f->filetype == FIO_TYPE_FILE)
			flags |= O_CREAT;

		f->fd = open(f->file_name, flags, 0600);
	} else {
		if (f->filetype == FIO_TYPE_CHAR)
			flags |= O_RDWR;
		else
			flags |= O_RDONLY;

		f->fd = open(f->file_name, flags);
	}

	if (f->fd == -1) {
		int __e = errno;

		td_verror(td, __e, "open");
		if (__e == EINVAL && td->odirect)
			log_err("fio: destination does not support O_DIRECT\n");
		return 1;
	}

	if (get_file_size(td, f))
		goto err;

	if (td->invalidate_cache && file_invalidate_cache(td, f))
		goto err;

	if (!td_random(td)) {
		if (fadvise(f->fd, f->file_offset, f->file_size, POSIX_FADV_SEQUENTIAL) < 0) {
			td_verror(td, errno, "fadvise");
			goto err;
		}
	} else {
		if (fadvise(f->fd, f->file_offset, f->file_size, POSIX_FADV_RANDOM) < 0) {
			td_verror(td, errno, "fadvise");
			goto err;
		}
	}

	return 0;
err:
	close(f->fd);
	return 1;
}

int open_files(struct thread_data *td)
{
	struct fio_file *f;
	unsigned int i;
	int err = 0;

	for_each_file(td, f, i) {
		err = td_io_open_file(td, f);
		if (err)
			break;

		if (td->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;
}

int setup_files(struct thread_data *td)
{
	struct fio_file *f;
	unsigned int i;
	int err;

	/*
	 * if ioengine defines a setup() method, it's responsible for
	 * setting up everything in the td->files[] area.
	 */
	if (td->io_ops->setup)
		return td->io_ops->setup(td);

	if (create_files(td))
		return 1;

	err = open_files(td);
	if (err)
		return err;

	/*
	 * Recalculate the total file size now that files are set up.
	 */
	td->total_file_size = 0;
	for_each_file(td, f, i)
		td->total_file_size += f->file_size;

	td->total_file_size = (td->total_file_size * td->nr_files) / td->open_files;

	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, "total_file_size");
		return 1;
	}

	if (!td->zone_size)
		td->zone_size = td->io_size;

	td->total_io_size = td->io_size * td->loops;

	for_each_file(td, f, i)
		td_io_close_file(td, f);

	return err;
}

void close_files(struct thread_data *td)
{
	struct fio_file *f;
	unsigned int i;

	for_each_file(td, f, i) {
		if (!f->file_name && (f->flags & FIO_FILE_UNLINK) &&
		    f->filetype == FIO_TYPE_FILE) {
			unlink(f->file_name);
			free(f->file_name);
			f->file_name = NULL;
		}

		td_io_close_file(td, f);

		if (f->file_map)
			free(f->file_map);
	}

	td->filename = NULL;
	free(td->files);
	td->files = NULL;
	td->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->open_files;
	struct fio_file *f;

	td->files = realloc(td->files, (cur_files + 1) * sizeof(*f));

	f = &td->files[cur_files];
	memset(f, 0, sizeof(*f));
	f->fd = -1;
	f->file_name = strdup(fname);

	get_file_type(f);

	td->open_files++;
	td->nr_uniq_files = td->open_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 (td->io_ops->close_file)
		td->io_ops->close_file(td, f);
	td->nr_open_files--;
	f->flags &= ~FIO_FILE_OPEN;
}
Commit	Line	Data
	1	#include <unistd.h>
	2	#include <fcntl.h>
	3	#include <string.h>
	4	#include <assert.h>
	5	#include <sys/stat.h>
	6	#include <sys/mman.h>
	7
	8	#include "fio.h"
	9	#include "os.h"
	10
	11	/*
	12	* Check if the file exists and it's large enough.
	13	*/
	14	static int file_ok(struct thread_data td, struct fio_file f)
	15	{
	16	struct stat st;
	17
	18	if (f->filetype != FIO_TYPE_FILE \|\|
	19	(td->io_ops->flags & FIO_DISKLESSIO))
	20	return 0;
	21
	22	if (lstat(f->file_name, &st) == -1)
	23	return 1;
	24
	25	/*
	26	* if it's a special file, size is always ok for now
	27	*/
	28	if (S_ISCHR(st.st_mode) \|\| S_ISBLK(st.st_mode))
	29	return 0;
	30	if (st.st_size < (off_t) f->file_size)
	31	return 1;
	32
	33	return 0;
	34	}
	35
	36	static int create_file(struct thread_data td, struct fio_file f)
	37	{
	38	unsigned long long left;
	39	unsigned int bs;
	40	char *b;
	41	int r;
	42
	43	f->fd = open(f->file_name, O_WRONLY \| O_CREAT \| O_TRUNC, 0644);
	44	if (f->fd < 0) {
	45	td_verror(td, errno, "open");
	46	return 1;
	47	}
	48
	49	if (ftruncate(f->fd, f->file_size) == -1) {
	50	td_verror(td, errno, "ftruncate");
	51	goto err;
	52	}
	53
	54	if (posix_fallocate(f->fd, 0, f->file_size) < 0) {
	55	td_verror(td, errno, "posix_fallocate");
	56	goto err;
	57	}
	58
	59	b = malloc(td->max_bs[DDIR_WRITE]);
	60	memset(b, 0, td->max_bs[DDIR_WRITE]);
	61
	62	left = f->file_size;
	63	while (left && !td->terminate) {
	64	bs = td->max_bs[DDIR_WRITE];
	65	if (bs > left)
	66	bs = left;
	67
	68	r = write(f->fd, b, bs);
	69
	70	if (r == (int) bs) {
	71	left -= bs;
	72	continue;
	73	} else {
	74	if (r < 0)
	75	td_verror(td, errno, "write");
	76	else
	77	td_verror(td, EIO, "write");
	78
	79	break;
	80	}
	81	}
	82
	83	if (td->terminate)
	84	unlink(f->file_name);
	85	else if (td->create_fsync)
	86	fsync(f->fd);
	87
	88	free(b);
	89	close(f->fd);
	90	f->fd = -1;
	91	return 0;
	92	err:
	93	close(f->fd);
	94	f->fd = -1;
	95	return 1;
	96	}
	97
	98	static int create_files(struct thread_data *td)
	99	{
	100	struct fio_file *f;
	101	int err, need_create, can_extend;
	102	unsigned int i;
	103
	104	for_each_file(td, f, i)
	105	f->file_size = td->total_file_size / td->nr_files;
	106
	107	/*
	108	* unless specifically asked for overwrite, let normal io extend it
	109	*/
	110	can_extend = !td->overwrite && !(td->io_ops->flags & FIO_NOEXTEND);
	111	if (can_extend)
	112	return 0;
	113
	114	need_create = 0;
	115	for_each_file(td, f, i) {
	116	int file_there;
	117
	118	if (f->filetype != FIO_TYPE_FILE)
	119	continue;
	120
	121	file_there = !file_ok(td, f);
	122
	123	if (file_there && td_write(td) && !td->overwrite) {
	124	unlink(f->file_name);
	125	file_there = 0;
	126	}
	127
	128	need_create += !file_there;
	129	}
	130
	131	if (!need_create)
	132	return 0;
	133
	134	if (!td->total_file_size) {
	135	log_err("Need size for create\n");
	136	td_verror(td, EINVAL, "file_size");
	137	return 1;
	138	}
	139
	140	temp_stall_ts = 1;
	141	fprintf(f_out, "%s: Laying out IO file(s) (%u x %LuMiB == %LuMiB)\n",
	142	td->name, td->nr_uniq_files,
	143	(td->total_file_size >> 20) / td->nr_uniq_files,
	144	td->total_file_size >> 20);
	145
	146	err = 0;
	147	for_each_file(td, f, i) {
	148	/*
	149	* Only unlink files that we created.
	150	*/
	151	f->flags &= ~FIO_FILE_UNLINK;
	152	if (file_ok(td, f)) {
	153	if (td->unlink)
	154	f->flags \|= FIO_FILE_UNLINK;
	155
	156	err = create_file(td, f);
	157	if (err)
	158	break;
	159	}
	160	}
	161
	162	temp_stall_ts = 0;
	163	return err;
	164	}
	165
	166	static int file_size(struct thread_data td, struct fio_file f)
	167	{
	168	struct stat st;
	169
	170	if (td->overwrite) {
	171	if (fstat(f->fd, &st) == -1) {
	172	td_verror(td, errno, "fstat");
	173	return 1;
	174	}
	175
	176	f->real_file_size = st.st_size;
	177
	178	if (!f->file_size \|\| f->file_size > f->real_file_size)
	179	f->file_size = f->real_file_size;
	180	} else
	181	f->real_file_size = f->file_size;
	182
	183	return 0;
	184	}
	185
	186	static int bdev_size(struct thread_data td, struct fio_file f)
	187	{
	188	unsigned long long bytes;
	189	int r;
	190
	191	r = blockdev_size(f->fd, &bytes);
	192	if (r) {
	193	td_verror(td, r, "blockdev_size");
	194	return 1;
	195	}
	196
	197	f->real_file_size = bytes;
	198
	199	/*
	200	* no extend possibilities, so limit size to device size if too large
	201	*/
	202	if (!f->file_size \|\| f->file_size > f->real_file_size)
	203	f->file_size = f->real_file_size;
	204
	205	f->file_size -= f->file_offset;
	206	return 0;
	207	}
	208
	209	static int get_file_size(struct thread_data td, struct fio_file f)
	210	{
	211	int ret = 0;
	212
	213	if (f->filetype == FIO_TYPE_FILE)
	214	ret = file_size(td, f);
	215	else if (f->filetype == FIO_TYPE_BD)
	216	ret = bdev_size(td, f);
	217	else
	218	f->real_file_size = -1;
	219
	220	if (ret)
	221	return ret;
	222
	223	if (f->file_offset > f->real_file_size) {
	224	log_err("%s: offset extends end (%Lu > %Lu)\n", td->name, f->file_offset, f->real_file_size);
	225	return 1;
	226	}
	227
	228	return 0;
	229	}
	230
	231	int file_invalidate_cache(struct thread_data td, struct fio_file f)
	232	{
	233	int ret = 0;
	234
	235	if (td->odirect)
	236	return 0;
	237
	238	/*
	239	* FIXME: add blockdev flushing too
	240	*/
	241	if (f->mmap)
	242	ret = madvise(f->mmap, f->file_size, MADV_DONTNEED);
	243	else if (f->filetype == FIO_TYPE_FILE) {
	244	ret = fadvise(f->fd, f->file_offset, f->file_size, POSIX_FADV_DONTNEED);
	245	} else if (f->filetype == FIO_TYPE_BD) {
	246	ret = blockdev_invalidate_cache(f->fd);
	247	} else if (f->filetype == FIO_TYPE_CHAR)
	248	ret = 0;
	249
	250	if (ret < 0) {
	251	td_verror(td, errno, "invalidate_cache");
	252	return 1;
	253	}
	254
	255	return ret;
	256	}
	257
	258	void generic_close_file(struct thread_data fio_unused td, struct fio_file f)
	259	{
	260	close(f->fd);
	261	f->fd = -1;
	262	}
	263
	264	int generic_open_file(struct thread_data td, struct fio_file f)
	265	{
	266	int flags = 0;
	267
	268	if (td->odirect)
	269	flags \|= OS_O_DIRECT;
	270	if (td->sync_io)
	271	flags \|= O_SYNC;
	272
	273	if (td_write(td) \|\| td_rw(td)) {
	274	flags \|= O_RDWR;
	275
	276	if (f->filetype == FIO_TYPE_FILE)
	277	flags \|= O_CREAT;
	278
	279	f->fd = open(f->file_name, flags, 0600);
	280	} else {
	281	if (f->filetype == FIO_TYPE_CHAR)
	282	flags \|= O_RDWR;
	283	else
	284	flags \|= O_RDONLY;
	285
	286	f->fd = open(f->file_name, flags);
	287	}
	288
	289	if (f->fd == -1) {
	290	int __e = errno;
	291
	292	td_verror(td, __e, "open");
	293	if (__e == EINVAL && td->odirect)
	294	log_err("fio: destination does not support O_DIRECT\n");
	295	return 1;
	296	}
	297
	298	if (get_file_size(td, f))
	299	goto err;
	300
	301	if (td->invalidate_cache && file_invalidate_cache(td, f))
	302	goto err;
	303
	304	if (!td_random(td)) {
	305	if (fadvise(f->fd, f->file_offset, f->file_size, POSIX_FADV_SEQUENTIAL) < 0) {
	306	td_verror(td, errno, "fadvise");
	307	goto err;
	308	}
	309	} else {
	310	if (fadvise(f->fd, f->file_offset, f->file_size, POSIX_FADV_RANDOM) < 0) {
	311	td_verror(td, errno, "fadvise");
	312	goto err;
	313	}
	314	}
	315
	316	return 0;
	317	err:
	318	close(f->fd);
	319	return 1;
	320	}
	321
	322	int open_files(struct thread_data *td)
	323	{
	324	struct fio_file *f;
	325	unsigned int i;
	326	int err = 0;
	327
	328	for_each_file(td, f, i) {
	329	err = td_io_open_file(td, f);
	330	if (err)
	331	break;
	332
	333	if (td->open_files == td->nr_open_files)
	334	break;
	335	}
	336
	337	if (!err)
	338	return 0;
	339
	340	for_each_file(td, f, i)
	341	td_io_close_file(td, f);
	342
	343	return err;
	344	}
	345
	346	int setup_files(struct thread_data *td)
	347	{
	348	struct fio_file *f;
	349	unsigned int i;
	350	int err;
	351
	352	/*
	353	* if ioengine defines a setup() method, it's responsible for
	354	* setting up everything in the td->files[] area.
	355	*/
	356	if (td->io_ops->setup)
	357	return td->io_ops->setup(td);
	358
	359	if (create_files(td))
	360	return 1;
	361
	362	err = open_files(td);
	363	if (err)
	364	return err;
	365
	366	/*
	367	* Recalculate the total file size now that files are set up.
	368	*/
	369	td->total_file_size = 0;
	370	for_each_file(td, f, i)
	371	td->total_file_size += f->file_size;
	372
	373	td->total_file_size = (td->total_file_size * td->nr_files) / td->open_files;
	374
	375	td->io_size = td->total_file_size;
	376	if (td->io_size == 0) {
	377	log_err("%s: no io blocks\n", td->name);
	378	td_verror(td, EINVAL, "total_file_size");
	379	return 1;
	380	}
	381
	382	if (!td->zone_size)
	383	td->zone_size = td->io_size;
	384
	385	td->total_io_size = td->io_size * td->loops;
	386
	387	for_each_file(td, f, i)
	388	td_io_close_file(td, f);
	389
	390	return err;
	391	}
	392
	393	void close_files(struct thread_data *td)
	394	{
	395	struct fio_file *f;
	396	unsigned int i;
	397
	398	for_each_file(td, f, i) {
	399	if (!f->file_name && (f->flags & FIO_FILE_UNLINK) &&
	400	f->filetype == FIO_TYPE_FILE) {
	401	unlink(f->file_name);
	402	free(f->file_name);
	403	f->file_name = NULL;
	404	}
	405
	406	td_io_close_file(td, f);
	407
	408	if (f->file_map)
	409	free(f->file_map);
	410	}
	411
	412	td->filename = NULL;
	413	free(td->files);
	414	td->files = NULL;
	415	td->nr_files = 0;
	416	}
	417
	418	static void get_file_type(struct fio_file *f)
	419	{
	420	struct stat sb;
	421
	422	f->filetype = FIO_TYPE_FILE;
	423
	424	if (!lstat(f->file_name, &sb)) {
	425	if (S_ISBLK(sb.st_mode))
	426	f->filetype = FIO_TYPE_BD;
	427	else if (S_ISCHR(sb.st_mode))
	428	f->filetype = FIO_TYPE_CHAR;
	429	}
	430	}
	431
	432	void add_file(struct thread_data td, const char fname)
	433	{
	434	int cur_files = td->open_files;
	435	struct fio_file *f;
	436
	437	td->files = realloc(td->files, (cur_files + 1) * sizeof(*f));
	438
	439	f = &td->files[cur_files];
	440	memset(f, 0, sizeof(*f));
	441	f->fd = -1;
	442	f->file_name = strdup(fname);
	443
	444	get_file_type(f);
	445
	446	td->open_files++;
	447	td->nr_uniq_files = td->open_files;
	448	}
	449
	450	void get_file(struct fio_file *f)
	451	{
	452	f->references++;
	453	}
	454
	455	void put_file(struct thread_data td, struct fio_file f)
	456	{
	457	if (!(f->flags & FIO_FILE_OPEN))
	458	return;
	459
	460	assert(f->references);
	461	if (--f->references)
	462	return;
	463
	464	if (td->io_ops->close_file)
	465	td->io_ops->close_file(td, f);
	466	td->nr_open_files--;
	467	f->flags &= ~FIO_FILE_OPEN;
	468	}