[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 (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)
{
	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);
		return 1;
	}

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

	b = malloc(td->max_bs);
	memset(b, 0, td->max_bs);

	left = f->file_size;
	while (left && !td->terminate) {
		bs = td->max_bs;
		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);
			else
				td_verror(td, EIO);

			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 i, err, need_create;

	/*
	 * unless specifically asked for overwrite, let normal io extend it
	 */
	if (!td->overwrite) {
		for_each_file(td, f, i)
			f->file_size = td->total_file_size / td->nr_files;

		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) (%d 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) {
		if (file_ok(td, f)) {
			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);
			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;
	}

	f->file_size -= f->file_offset;
	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);
		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 (td->filetype == FIO_TYPE_FILE)
		ret = file_size(td, f);
	else if (td->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;

	/*
	 * 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)
		ret = blockdev_invalidate_cache(f->fd);
	else if (td->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))
		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;
}

static int setup_files_mmap(struct thread_data *td)
{
	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;
}

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

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

	if (td_write(td) || td_rw(td)) {
		if (td->filetype == FIO_TYPE_FILE) {
			if (!td->overwrite)
				flags |= O_TRUNC;

			flags |= O_CREAT;
		}
		if (td->sync_io)
			flags |= O_SYNC;

		flags |= O_RDWR;

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

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

	if (f->fd == -1) {
		td_verror(td, errno);
		return 1;
	}

	if (get_file_size(td, f))
		return 1;

	return 0;
}

int setup_files(struct thread_data *td)
{
	struct fio_file *f;
	int i, 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 = 0;
	for_each_file(td, f, i) {
		err = setup_file(td, f);
		if (err)
			break;
	}

	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->io_size = td->total_file_size;
	if (td->io_size == 0) {
		log_err("%s: no io blocks\n", td->name);
		td_verror(td, EINVAL);
		return 1;
	}

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

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

	if (td->io_ops->flags & FIO_MMAPIO)
		return setup_files_mmap(td);
	else
		return setup_files_plain(td);
}

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

	for_each_file(td, f, i) {
		if (f->fd != -1) {
			if (td->unlink && td->filetype == FIO_TYPE_FILE)
				unlink(f->file_name);
			free(f->file_name);
			f->file_name = NULL;
			close(f->fd);
			f->fd = -1;
		}
		if (f->mmap) {
			munmap(f->mmap, f->file_size);
			f->mmap = NULL;
		}
	}

	free(td->files);
	td->files = NULL;
	td->nr_files = 0;
}
Commit	Line	Data
53cdc686 JA	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
25205e97 JA	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)
53cdc686	15	{
b2a15192	16	struct stat st;
53cdc686	17
b2a15192 JA	18	if (td->filetype != FIO_TYPE_FILE)
	19	return 0;
	20
25205e97 JA	21	if (stat(f->file_name, &st) == -1)
	22	return 1;
	23	else if (st.st_size < (off_t) f->file_size)
	24	return 1;
	25
	26	return 0;
	27	}
	28
	29	static int create_file(struct thread_data td, struct fio_file f)
	30	{
	31	unsigned long long left;
	32	unsigned int bs;
	33	char *b;
	34	int r;
b2a15192	35
53cdc686 JA	36	f->fd = open(f->file_name, O_WRONLY \| O_CREAT \| O_TRUNC, 0644);
	37	if (f->fd < 0) {
	38	td_verror(td, errno);
	39	return 1;
	40	}
	41
	42	if (ftruncate(f->fd, f->file_size) == -1) {
	43	td_verror(td, errno);
	44	goto err;
	45	}
	46
	47	b = malloc(td->max_bs);
	48	memset(b, 0, td->max_bs);
	49
	50	left = f->file_size;
	51	while (left && !td->terminate) {
	52	bs = td->max_bs;
	53	if (bs > left)
	54	bs = left;
	55
	56	r = write(f->fd, b, bs);
	57
	58	if (r == (int) bs) {
	59	left -= bs;
	60	continue;
	61	} else {
	62	if (r < 0)
	63	td_verror(td, errno);
	64	else
	65	td_verror(td, EIO);
	66
	67	break;
	68	}
	69	}
	70
	71	if (td->terminate)
	72	unlink(f->file_name);
	73	else if (td->create_fsync)
	74	fsync(f->fd);
	75
	76	free(b);
	77	close(f->fd);
	78	f->fd = -1;
	79	return 0;
	80	err:
	81	close(f->fd);
	82	f->fd = -1;
	83	return 1;
	84	}
	85
	86	static int create_files(struct thread_data *td)
	87	{
	88	struct fio_file *f;
25205e97	89	int i, err, need_create;
53cdc686 JA	90
	91	/*
	92	* unless specifically asked for overwrite, let normal io extend it
	93	*/
	94	if (!td->overwrite) {
53cdc686 JA	95	for_each_file(td, f, i)
	96	f->file_size = td->total_file_size / td->nr_files;
	97
	98	return 0;
	99	}
	100
25205e97	101	need_create = 0;
0a7eb121 JA	102	if (td->filetype == FIO_TYPE_FILE)
0a7eb121 JA	103	for_each_file(td, f, i)
f1027063	104	need_create += file_ok(td, f);
25205e97	105
25205e97 JA	106	if (!need_create)
	107	return 0;
	108
f1027063 JA	109	if (!td->total_file_size) {
	110	log_err("Need size for create\n");
	111	td_verror(td, EINVAL);
	112	return 1;
	113	}
	114
53cdc686	115	temp_stall_ts = 1;
25205e97	116	fprintf(f_out, "%s: Laying out IO file(s) (%d x %LuMiB == %LuMiB)\n",
13f8e2d2 JA	117	td->name, td->nr_uniq_files,
13f8e2d2 JA	118	(td->total_file_size >> 20) / td->nr_uniq_files,
25205e97	119	td->total_file_size >> 20);
53cdc686 JA	120
	121	err = 0;
	122	for_each_file(td, f, i) {
25205e97 JA	123	if (file_ok(td, f)) {
	124	err = create_file(td, f);
	125	if (err)
	126	break;
	127	}
53cdc686 JA	128	}
	129
	130	temp_stall_ts = 0;
	131	return err;
	132	}
	133
	134	static int file_size(struct thread_data td, struct fio_file f)
	135	{
	136	struct stat st;
	137
	138	if (td->overwrite) {
	139	if (fstat(f->fd, &st) == -1) {
	140	td_verror(td, errno);
	141	return 1;
	142	}
	143
	144	f->real_file_size = st.st_size;
	145
	146	if (!f->file_size \|\| f->file_size > f->real_file_size)
	147	f->file_size = f->real_file_size;
	148	}
	149
	150	f->file_size -= f->file_offset;
	151	return 0;
	152	}
	153
	154	static int bdev_size(struct thread_data td, struct fio_file f)
	155	{
	156	unsigned long long bytes;
	157	int r;
	158
	159	r = blockdev_size(f->fd, &bytes);
	160	if (r) {
	161	td_verror(td, r);
	162	return 1;
	163	}
	164
	165	f->real_file_size = bytes;
	166
	167	/*
	168	* no extend possibilities, so limit size to device size if too large
	169	*/
	170	if (!f->file_size \|\| f->file_size > f->real_file_size)
	171	f->file_size = f->real_file_size;
	172
	173	f->file_size -= f->file_offset;
	174	return 0;
	175	}
	176
	177	static int get_file_size(struct thread_data td, struct fio_file f)
	178	{
	179	int ret = 0;
	180
	181	if (td->filetype == FIO_TYPE_FILE)
	182	ret = file_size(td, f);
	183	else if (td->filetype == FIO_TYPE_BD)
	184	ret = bdev_size(td, f);
	185	else
	186	f->real_file_size = -1;
	187
	188	if (ret)
	189	return ret;
	190
	191	if (f->file_offset > f->real_file_size) {
192	log_err("%s: offset extends end (%Lu > %Lu)\n", td->name, f->file_offset, f->real_file_size);
193	return 1;
194	}
195
53cdc686 JA	196	return 0;
	197	}
	198
e5b401d4 JA	199	int file_invalidate_cache(struct thread_data td, struct fio_file f)
	200	{
	201	int ret = 0;
	202
	203	/*
	204	* FIXME: add blockdev flushing too
	205	*/
	206	if (td->io_ops->flags & FIO_MMAPIO)
	207	ret = madvise(f->mmap, f->file_size, MADV_DONTNEED);
	208	else if (td->filetype == FIO_TYPE_FILE)
	209	ret = fadvise(f->fd, f->file_offset, f->file_size, POSIX_FADV_DONTNEED);
	210	else if (td->filetype == FIO_TYPE_BD)
	211	ret = blockdev_invalidate_cache(f->fd);
	212	else if (td->filetype == FIO_TYPE_CHAR)
	213	ret = 0;
	214
	215	if (ret < 0) {
	216	td_verror(td, errno);
	217	return 1;
	218	}
	219
	220	return 0;
	221	}
	222
53cdc686 JA	223	static int __setup_file_mmap(struct thread_data td, struct fio_file f)
	224	{
	225	int flags;
	226
	227	if (td_rw(td))
	228	flags = PROT_READ \| PROT_WRITE;
	229	else if (td_write(td)) {
	230	flags = PROT_WRITE;
	231
	232	if (td->verify != VERIFY_NONE)
	233	flags \|= PROT_READ;
	234	} else
	235	flags = PROT_READ;
	236
	237	f->mmap = mmap(NULL, f->file_size, flags, MAP_SHARED, f->fd, f->file_offset);
	238	if (f->mmap == MAP_FAILED) {
	239	f->mmap = NULL;
	240	td_verror(td, errno);
	241	return 1;
	242	}
	243
e5b401d4 JA	244	if (td->invalidate_cache && file_invalidate_cache(td, f))
e5b401d4 JA	245	return 1;
53cdc686 JA	246
	247	if (td->sequential) {
	248	if (madvise(f->mmap, f->file_size, MADV_SEQUENTIAL) < 0) {
	249	td_verror(td, errno);
	250	return 1;
	251	}
	252	} else {
	253	if (madvise(f->mmap, f->file_size, MADV_RANDOM) < 0) {
	254	td_verror(td, errno);
	255	return 1;
	256	}
	257	}
	258
	259	return 0;
	260	}
	261
	262	static int setup_files_mmap(struct thread_data *td)
	263	{
	264	struct fio_file *f;
	265	int i, err = 0;
	266
	267	for_each_file(td, f, i) {
	268	err = __setup_file_mmap(td, f);
	269	if (err)
	270	break;
	271	}
	272
	273	return err;
	274	}
	275
	276	static int __setup_file_plain(struct thread_data td, struct fio_file f)
	277	{
e5b401d4 JA	278	if (td->invalidate_cache && file_invalidate_cache(td, f))
e5b401d4 JA	279	return 1;
53cdc686 JA	280
	281	if (td->sequential) {
	282	if (fadvise(f->fd, f->file_offset, f->file_size, POSIX_FADV_SEQUENTIAL) < 0) {
	283	td_verror(td, errno);
	284	return 1;
	285	}
	286	} else {
	287	if (fadvise(f->fd, f->file_offset, f->file_size, POSIX_FADV_RANDOM) < 0) {
	288	td_verror(td, errno);
	289	return 1;
	290	}
	291	}
	292
	293	return 0;
	294	}
	295
	296	static int setup_files_plain(struct thread_data *td)
	297	{
	298	struct fio_file *f;
	299	int i, err = 0;
	300
	301	for_each_file(td, f, i) {
	302	err = __setup_file_plain(td, f);
	303	if (err)
	304	break;
	305	}
	306
	307	return err;
	308	}
	309
	310	static int setup_file(struct thread_data td, struct fio_file f)
	311	{
53cdc686 JA	312	int flags = 0;
53cdc686 JA	313
53cdc686 JA	314	if (td->odirect)
	315	flags \|= OS_O_DIRECT;
	316
	317	if (td_write(td) \|\| td_rw(td)) {
	318	if (td->filetype == FIO_TYPE_FILE) {
	319	if (!td->overwrite)
	320	flags \|= O_TRUNC;
	321
	322	flags \|= O_CREAT;
	323	}
	324	if (td->sync_io)
	325	flags \|= O_SYNC;
	326
	327	flags \|= O_RDWR;
	328
	329	f->fd = open(f->file_name, flags, 0600);
	330	} else {
	331	if (td->filetype == FIO_TYPE_CHAR)
	332	flags \|= O_RDWR;
	333	else
	334	flags \|= O_RDONLY;
	335
	336	f->fd = open(f->file_name, flags);
	337	}
	338
	339	if (f->fd == -1) {
	340	td_verror(td, errno);
	341	return 1;
	342	}
	343
	344	if (get_file_size(td, f))
	345	return 1;
	346
	347	return 0;
	348	}
	349
	350	int setup_files(struct thread_data *td)
	351	{
	352	struct fio_file *f;
	353	int i, err;
	354
	355	/*
	356	* if ioengine defines a setup() method, it's responsible for
	357	* setting up everything in the td->files[] area.
	358	*/
	359	if (td->io_ops->setup)
	360	return td->io_ops->setup(td);
	361
	362	if (create_files(td))
	363	return 1;
	364
f1027063	365	err = 0;
53cdc686 JA	366	for_each_file(td, f, i) {
	367	err = setup_file(td, f);
	368	if (err)
	369	break;
	370	}
	371
f1027063 JA	372	if (err)
	373	return err;
	374
0a7eb121 JA	375	/*
	376	* Recalculate the total file size now that files are set up.
	377	*/
	378	td->total_file_size = 0;
	379	for_each_file(td, f, i)
	380	td->total_file_size += f->file_size;
	381
f1027063	382	td->io_size = td->total_file_size;
53cdc686 JA	383	if (td->io_size == 0) {
	384	log_err("%s: no io blocks\n", td->name);
	385	td_verror(td, EINVAL);
	386	return 1;
	387	}
	388
	389	if (!td->zone_size)
	390	td->zone_size = td->io_size;
	391
	392	td->total_io_size = td->io_size * td->loops;
	393
	394	if (td->io_ops->flags & FIO_MMAPIO)
	395	return setup_files_mmap(td);
	396	else
	397	return setup_files_plain(td);
	398	}
	399
	400	void close_files(struct thread_data *td)
	401	{
0ab8db89	402	struct fio_file *f;
53cdc686 JA	403	int i;
53cdc686 JA	404
0ab8db89	405	for_each_file(td, f, i) {
53cdc686	406	if (f->fd != -1) {
f6cbb269 JA	407	if (td->unlink && td->filetype == FIO_TYPE_FILE)
f6cbb269 JA	408	unlink(f->file_name);
b4a6a59a JA	409	free(f->file_name);
b4a6a59a JA	410	f->file_name = NULL;
53cdc686 JA	411	close(f->fd);
	412	f->fd = -1;
	413	}
	414	if (f->mmap) {
	415	munmap(f->mmap, f->file_size);
	416	f->mmap = NULL;
	417	}
	418	}
b4a6a59a JA	419
	420	free(td->files);
	421	td->files = NULL;
	422	td->nr_files = 0;
53cdc686	423	}