[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;
	}

	if (posix_fallocate(f->fd, 0, f->file_size) < 0) {
		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 &&
			    td->filename) {
				unlink(f->file_name);
				td->filename = NULL;
			}
			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
40f8298c JA	47	if (posix_fallocate(f->fd, 0, f->file_size) < 0) {
	48	td_verror(td, errno);
	49	goto err;
	50	}
	51
53cdc686 JA	52	b = malloc(td->max_bs);
	53	memset(b, 0, td->max_bs);
	54
	55	left = f->file_size;
	56	while (left && !td->terminate) {
	57	bs = td->max_bs;
	58	if (bs > left)
	59	bs = left;
	60
	61	r = write(f->fd, b, bs);
	62
	63	if (r == (int) bs) {
	64	left -= bs;
	65	continue;
	66	} else {
	67	if (r < 0)
	68	td_verror(td, errno);
	69	else
	70	td_verror(td, EIO);
	71
	72	break;
	73	}
	74	}
	75
	76	if (td->terminate)
	77	unlink(f->file_name);
	78	else if (td->create_fsync)
	79	fsync(f->fd);
	80
	81	free(b);
	82	close(f->fd);
	83	f->fd = -1;
	84	return 0;
	85	err:
	86	close(f->fd);
	87	f->fd = -1;
	88	return 1;
	89	}
	90
	91	static int create_files(struct thread_data *td)
	92	{
	93	struct fio_file *f;
25205e97	94	int i, err, need_create;
53cdc686 JA	95
	96	/*
	97	* unless specifically asked for overwrite, let normal io extend it
	98	*/
	99	if (!td->overwrite) {
53cdc686 JA	100	for_each_file(td, f, i)
	101	f->file_size = td->total_file_size / td->nr_files;
	102
	103	return 0;
	104	}
	105
25205e97	106	need_create = 0;
0a7eb121 JA	107	if (td->filetype == FIO_TYPE_FILE)
0a7eb121 JA	108	for_each_file(td, f, i)
f1027063	109	need_create += file_ok(td, f);
25205e97	110
25205e97 JA	111	if (!need_create)
	112	return 0;
	113
f1027063 JA	114	if (!td->total_file_size) {
	115	log_err("Need size for create\n");
	116	td_verror(td, EINVAL);
	117	return 1;
	118	}
	119
53cdc686	120	temp_stall_ts = 1;
25205e97	121	fprintf(f_out, "%s: Laying out IO file(s) (%d x %LuMiB == %LuMiB)\n",
13f8e2d2 JA	122	td->name, td->nr_uniq_files,
13f8e2d2 JA	123	(td->total_file_size >> 20) / td->nr_uniq_files,
25205e97	124	td->total_file_size >> 20);
53cdc686 JA	125
	126	err = 0;
	127	for_each_file(td, f, i) {
25205e97 JA	128	if (file_ok(td, f)) {
	129	err = create_file(td, f);
	130	if (err)
	131	break;
	132	}
53cdc686 JA	133	}
	134
	135	temp_stall_ts = 0;
	136	return err;
	137	}
	138
	139	static int file_size(struct thread_data td, struct fio_file f)
	140	{
	141	struct stat st;
	142
	143	if (td->overwrite) {
	144	if (fstat(f->fd, &st) == -1) {
	145	td_verror(td, errno);
	146	return 1;
	147	}
	148
	149	f->real_file_size = st.st_size;
	150
	151	if (!f->file_size \|\| f->file_size > f->real_file_size)
	152	f->file_size = f->real_file_size;
	153	}
	154
	155	f->file_size -= f->file_offset;
	156	return 0;
	157	}
	158
	159	static int bdev_size(struct thread_data td, struct fio_file f)
	160	{
	161	unsigned long long bytes;
	162	int r;
	163
	164	r = blockdev_size(f->fd, &bytes);
	165	if (r) {
	166	td_verror(td, r);
	167	return 1;
	168	}
	169
	170	f->real_file_size = bytes;
	171
	172	/*
	173	* no extend possibilities, so limit size to device size if too large
	174	*/
	175	if (!f->file_size \|\| f->file_size > f->real_file_size)
	176	f->file_size = f->real_file_size;
	177
	178	f->file_size -= f->file_offset;
	179	return 0;
	180	}
	181
	182	static int get_file_size(struct thread_data td, struct fio_file f)
	183	{
	184	int ret = 0;
	185
	186	if (td->filetype == FIO_TYPE_FILE)
	187	ret = file_size(td, f);
	188	else if (td->filetype == FIO_TYPE_BD)
	189	ret = bdev_size(td, f);
	190	else
	191	f->real_file_size = -1;
	192
	193	if (ret)
	194	return ret;
	195
	196	if (f->file_offset > f->real_file_size) {
197	log_err("%s: offset extends end (%Lu > %Lu)\n", td->name, f->file_offset, f->real_file_size);
198	return 1;
199	}
200
53cdc686 JA	201	return 0;
	202	}
	203
e5b401d4 JA	204	int file_invalidate_cache(struct thread_data td, struct fio_file f)
	205	{
	206	int ret = 0;
	207
	208	/*
	209	* FIXME: add blockdev flushing too
	210	*/
	211	if (td->io_ops->flags & FIO_MMAPIO)
	212	ret = madvise(f->mmap, f->file_size, MADV_DONTNEED);
	213	else if (td->filetype == FIO_TYPE_FILE)
	214	ret = fadvise(f->fd, f->file_offset, f->file_size, POSIX_FADV_DONTNEED);
	215	else if (td->filetype == FIO_TYPE_BD)
	216	ret = blockdev_invalidate_cache(f->fd);
	217	else if (td->filetype == FIO_TYPE_CHAR)
	218	ret = 0;
	219
	220	if (ret < 0) {
	221	td_verror(td, errno);
	222	return 1;
	223	}
	224
	225	return 0;
	226	}
	227
53cdc686 JA	228	static int __setup_file_mmap(struct thread_data td, struct fio_file f)
	229	{
	230	int flags;
	231
	232	if (td_rw(td))
	233	flags = PROT_READ \| PROT_WRITE;
	234	else if (td_write(td)) {
	235	flags = PROT_WRITE;
	236
	237	if (td->verify != VERIFY_NONE)
	238	flags \|= PROT_READ;
	239	} else
	240	flags = PROT_READ;
	241
	242	f->mmap = mmap(NULL, f->file_size, flags, MAP_SHARED, f->fd, f->file_offset);
	243	if (f->mmap == MAP_FAILED) {
	244	f->mmap = NULL;
	245	td_verror(td, errno);
	246	return 1;
	247	}
	248
e5b401d4 JA	249	if (td->invalidate_cache && file_invalidate_cache(td, f))
e5b401d4 JA	250	return 1;
53cdc686 JA	251
	252	if (td->sequential) {
	253	if (madvise(f->mmap, f->file_size, MADV_SEQUENTIAL) < 0) {
	254	td_verror(td, errno);
	255	return 1;
	256	}
	257	} else {
	258	if (madvise(f->mmap, f->file_size, MADV_RANDOM) < 0) {
	259	td_verror(td, errno);
	260	return 1;
	261	}
	262	}
	263
	264	return 0;
	265	}
	266
	267	static int setup_files_mmap(struct thread_data *td)
	268	{
	269	struct fio_file *f;
	270	int i, err = 0;
	271
	272	for_each_file(td, f, i) {
	273	err = __setup_file_mmap(td, f);
	274	if (err)
	275	break;
	276	}
	277
	278	return err;
	279	}
	280
	281	static int __setup_file_plain(struct thread_data td, struct fio_file f)
	282	{
e5b401d4 JA	283	if (td->invalidate_cache && file_invalidate_cache(td, f))
e5b401d4 JA	284	return 1;
53cdc686 JA	285
	286	if (td->sequential) {
	287	if (fadvise(f->fd, f->file_offset, f->file_size, POSIX_FADV_SEQUENTIAL) < 0) {
	288	td_verror(td, errno);
	289	return 1;
	290	}
	291	} else {
	292	if (fadvise(f->fd, f->file_offset, f->file_size, POSIX_FADV_RANDOM) < 0) {
	293	td_verror(td, errno);
	294	return 1;
	295	}
	296	}
	297
	298	return 0;
	299	}
	300
	301	static int setup_files_plain(struct thread_data *td)
	302	{
	303	struct fio_file *f;
	304	int i, err = 0;
	305
	306	for_each_file(td, f, i) {
	307	err = __setup_file_plain(td, f);
	308	if (err)
	309	break;
	310	}
	311
	312	return err;
	313	}
	314
	315	static int setup_file(struct thread_data td, struct fio_file f)
	316	{
53cdc686 JA	317	int flags = 0;
53cdc686 JA	318
53cdc686 JA	319	if (td->odirect)
	320	flags \|= OS_O_DIRECT;
	321
	322	if (td_write(td) \|\| td_rw(td)) {
	323	if (td->filetype == FIO_TYPE_FILE) {
	324	if (!td->overwrite)
	325	flags \|= O_TRUNC;
	326
	327	flags \|= O_CREAT;
	328	}
	329	if (td->sync_io)
	330	flags \|= O_SYNC;
	331
	332	flags \|= O_RDWR;
	333
	334	f->fd = open(f->file_name, flags, 0600);
	335	} else {
	336	if (td->filetype == FIO_TYPE_CHAR)
	337	flags \|= O_RDWR;
	338	else
	339	flags \|= O_RDONLY;
	340
	341	f->fd = open(f->file_name, flags);
	342	}
	343
	344	if (f->fd == -1) {
	345	td_verror(td, errno);
	346	return 1;
	347	}
	348
	349	if (get_file_size(td, f))
	350	return 1;
	351
	352	return 0;
	353	}
	354
	355	int setup_files(struct thread_data *td)
	356	{
	357	struct fio_file *f;
	358	int i, err;
	359
	360	/*
	361	* if ioengine defines a setup() method, it's responsible for
	362	* setting up everything in the td->files[] area.
	363	*/
	364	if (td->io_ops->setup)
	365	return td->io_ops->setup(td);
	366
	367	if (create_files(td))
	368	return 1;
	369
f1027063	370	err = 0;
53cdc686 JA	371	for_each_file(td, f, i) {
	372	err = setup_file(td, f);
	373	if (err)
	374	break;
	375	}
	376
f1027063 JA	377	if (err)
	378	return err;
	379
0a7eb121 JA	380	/*
	381	* Recalculate the total file size now that files are set up.
	382	*/
	383	td->total_file_size = 0;
	384	for_each_file(td, f, i)
	385	td->total_file_size += f->file_size;
	386
f1027063	387	td->io_size = td->total_file_size;
53cdc686 JA	388	if (td->io_size == 0) {
	389	log_err("%s: no io blocks\n", td->name);
	390	td_verror(td, EINVAL);
	391	return 1;
	392	}
	393
	394	if (!td->zone_size)
	395	td->zone_size = td->io_size;
	396
	397	td->total_io_size = td->io_size * td->loops;
	398
	399	if (td->io_ops->flags & FIO_MMAPIO)
	400	return setup_files_mmap(td);
	401	else
	402	return setup_files_plain(td);
	403	}
	404
	405	void close_files(struct thread_data *td)
	406	{
0ab8db89	407	struct fio_file *f;
53cdc686 JA	408	int i;
53cdc686 JA	409
0ab8db89	410	for_each_file(td, f, i) {
53cdc686	411	if (f->fd != -1) {
c21ac0ff JA	412	if (td->unlink && td->filetype == FIO_TYPE_FILE &&
c21ac0ff JA	413	td->filename) {
f6cbb269	414	unlink(f->file_name);
c21ac0ff JA	415	td->filename = NULL;
c21ac0ff JA	416	}
b4a6a59a JA	417	free(f->file_name);
b4a6a59a JA	418	f->file_name = NULL;
53cdc686 JA	419	close(f->fd);
	420	f->fd = -1;
	421	}
	422	if (f->mmap) {
	423	munmap(f->mmap, f->file_size);
	424	f->mmap = NULL;
	425	}
	426	}
b4a6a59a JA	427
	428	free(td->files);
	429	td->files = NULL;
	430	td->nr_files = 0;
53cdc686	431	}