[mirror_zfs.git] / module / os / freebsd / zfs / vdev_file.c

/*
 * CDDL HEADER START
 *
 * The contents of this file are subject to the terms of the
 * Common Development and Distribution License (the "License").
 * You may not use this file except in compliance with the License.
 *
 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
 * or http://www.opensolaris.org/os/licensing.
 * See the License for the specific language governing permissions
 * and limitations under the License.
 *
 * When distributing Covered Code, include this CDDL HEADER in each
 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
 * If applicable, add the following below this CDDL HEADER, with the
 * fields enclosed by brackets "[]" replaced with your own identifying
 * information: Portions Copyright [yyyy] [name of copyright owner]
 *
 * CDDL HEADER END
 */
/*
 * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
 * Copyright (c) 2011, 2020 by Delphix. All rights reserved.
 */

#include <sys/zfs_context.h>
#include <sys/spa.h>
#include <sys/file.h>
#include <sys/vdev_file.h>
#include <sys/vdev_impl.h>
#include <sys/zio.h>
#include <sys/fs/zfs.h>
#include <sys/fm/fs/zfs.h>
#include <sys/abd.h>
#include <sys/stat.h>

/*
 * Virtual device vector for files.
 */

static taskq_t *vdev_file_taskq;

unsigned long vdev_file_logical_ashift = SPA_MINBLOCKSHIFT;
unsigned long vdev_file_physical_ashift = SPA_MINBLOCKSHIFT;

void
vdev_file_init(void)
{
	vdev_file_taskq = taskq_create("z_vdev_file", MAX(max_ncpus, 16),
	    minclsyspri, max_ncpus, INT_MAX, 0);
}

void
vdev_file_fini(void)
{
	taskq_destroy(vdev_file_taskq);
}

static void
vdev_file_hold(vdev_t *vd)
{
	ASSERT(vd->vdev_path != NULL);
}

static void
vdev_file_rele(vdev_t *vd)
{
	ASSERT(vd->vdev_path != NULL);
}

static mode_t
vdev_file_open_mode(spa_mode_t spa_mode)
{
	mode_t mode = 0;

	if ((spa_mode & SPA_MODE_READ) && (spa_mode & SPA_MODE_WRITE)) {
		mode = O_RDWR;
	} else if (spa_mode & SPA_MODE_READ) {
		mode = O_RDONLY;
	} else if (spa_mode & SPA_MODE_WRITE) {
		mode = O_WRONLY;
	}

	return (mode | O_LARGEFILE);
}

static int
vdev_file_open(vdev_t *vd, uint64_t *psize, uint64_t *max_psize,
    uint64_t *logical_ashift, uint64_t *physical_ashift)
{
	vdev_file_t *vf;
	zfs_file_t *fp;
	zfs_file_attr_t zfa;
	int error;

	/*
	 * Rotational optimizations only make sense on block devices.
	 */
	vd->vdev_nonrot = B_TRUE;

	/*
	 * Allow TRIM on file based vdevs.  This may not always be supported,
	 * since it depends on your kernel version and underlying filesystem
	 * type but it is always safe to attempt.
	 */
	vd->vdev_has_trim = B_TRUE;

	/*
	 * Disable secure TRIM on file based vdevs.  There is no way to
	 * request this behavior from the underlying filesystem.
	 */
	vd->vdev_has_securetrim = B_FALSE;

	/*
	 * We must have a pathname, and it must be absolute.
	 */
	if (vd->vdev_path == NULL || vd->vdev_path[0] != '/') {
		vd->vdev_stat.vs_aux = VDEV_AUX_BAD_LABEL;
		return (SET_ERROR(EINVAL));
	}

	/*
	 * Reopen the device if it's not currently open.  Otherwise,
	 * just update the physical size of the device.
	 */
	if (vd->vdev_tsd != NULL) {
		ASSERT(vd->vdev_reopening);
		vf = vd->vdev_tsd;
		goto skip_open;
	}

	vf = vd->vdev_tsd = kmem_zalloc(sizeof (vdev_file_t), KM_SLEEP);

	/*
	 * We always open the files from the root of the global zone, even if
	 * we're in a local zone.  If the user has gotten to this point, the
	 * administrator has already decided that the pool should be available
	 * to local zone users, so the underlying devices should be as well.
	 */
	ASSERT(vd->vdev_path != NULL && vd->vdev_path[0] == '/');

	error = zfs_file_open(vd->vdev_path,
	    vdev_file_open_mode(spa_mode(vd->vdev_spa)), 0, &fp);
	if (error) {
		vd->vdev_stat.vs_aux = VDEV_AUX_OPEN_FAILED;
		return (error);
	}

	vf->vf_file = fp;

#ifdef _KERNEL
	/*
	 * Make sure it's a regular file.
	 */
	if (zfs_file_getattr(fp, &zfa)) {
		return (SET_ERROR(ENODEV));
	}
	if (!S_ISREG(zfa.zfa_mode)) {
		vd->vdev_stat.vs_aux = VDEV_AUX_OPEN_FAILED;
		return (SET_ERROR(ENODEV));
	}
#endif

skip_open:

	error =  zfs_file_getattr(vf->vf_file, &zfa);
	if (error) {
		vd->vdev_stat.vs_aux = VDEV_AUX_OPEN_FAILED;
		return (error);
	}

	*max_psize = *psize = zfa.zfa_size;
	*logical_ashift = vdev_file_logical_ashift;
	*physical_ashift = vdev_file_physical_ashift;

	return (0);
}

static void
vdev_file_close(vdev_t *vd)
{
	vdev_file_t *vf = vd->vdev_tsd;

	if (vd->vdev_reopening || vf == NULL)
		return;

	if (vf->vf_file != NULL) {
		zfs_file_close(vf->vf_file);
	}

	vd->vdev_delayed_close = B_FALSE;
	kmem_free(vf, sizeof (vdev_file_t));
	vd->vdev_tsd = NULL;
}

/*
 * Implements the interrupt side for file vdev types. This routine will be
 * called when the I/O completes allowing us to transfer the I/O to the
 * interrupt taskqs. For consistency, the code structure mimics disk vdev
 * types.
 */
static void
vdev_file_io_intr(zio_t *zio)
{
	zio_delay_interrupt(zio);
}

static void
vdev_file_io_strategy(void *arg)
{
	zio_t *zio = arg;
	vdev_t *vd = zio->io_vd;
	vdev_file_t *vf;
	void *buf;
	ssize_t resid;
	loff_t off;
	ssize_t size;
	int err;

	off = zio->io_offset;
	size = zio->io_size;
	resid = 0;

	vf = vd->vdev_tsd;

	ASSERT(zio->io_type == ZIO_TYPE_READ || zio->io_type == ZIO_TYPE_WRITE);
	if (zio->io_type == ZIO_TYPE_READ) {
		buf = abd_borrow_buf(zio->io_abd, zio->io_size);
		err = zfs_file_pread(vf->vf_file, buf, size, off, &resid);
		abd_return_buf_copy(zio->io_abd, buf, size);
	} else {
		buf = abd_borrow_buf_copy(zio->io_abd, zio->io_size);
		err = zfs_file_pwrite(vf->vf_file, buf, size, off, &resid);
		abd_return_buf(zio->io_abd, buf, size);
	}
	if (resid != 0 && zio->io_error == 0)
		zio->io_error = ENOSPC;

	vdev_file_io_intr(zio);
}

static void
vdev_file_io_start(zio_t *zio)
{
	vdev_t *vd = zio->io_vd;
	vdev_file_t *vf = vd->vdev_tsd;

	if (zio->io_type == ZIO_TYPE_IOCTL) {
		/* XXPOLICY */
		if (!vdev_readable(vd)) {
			zio->io_error = SET_ERROR(ENXIO);
			zio_interrupt(zio);
			return;
		}

		switch (zio->io_cmd) {
		case DKIOCFLUSHWRITECACHE:
			zio->io_error = zfs_file_fsync(vf->vf_file,
			    O_SYNC|O_DSYNC);
			break;
		default:
			zio->io_error = SET_ERROR(ENOTSUP);
		}

		zio_execute(zio);
		return;
	} else if (zio->io_type == ZIO_TYPE_TRIM) {
#ifdef notyet
		int mode = 0;

		ASSERT3U(zio->io_size, !=, 0);

		/* XXX FreeBSD has no fallocate routine in file ops */
		zio->io_error = zfs_file_fallocate(vf->vf_file,
		    mode, zio->io_offset, zio->io_size);
#endif
		zio->io_error = SET_ERROR(ENOTSUP);
		zio_execute(zio);
		return;
	}
	ASSERT(zio->io_type == ZIO_TYPE_READ || zio->io_type == ZIO_TYPE_WRITE);
	zio->io_target_timestamp = zio_handle_io_delay(zio);

	VERIFY3U(taskq_dispatch(vdev_file_taskq, vdev_file_io_strategy, zio,
	    TQ_SLEEP), !=, 0);
}

/* ARGSUSED */
static void
vdev_file_io_done(zio_t *zio)
{
}

vdev_ops_t vdev_file_ops = {
	.vdev_op_init = NULL,
	.vdev_op_fini = NULL,
	.vdev_op_open = vdev_file_open,
	.vdev_op_close = vdev_file_close,
	.vdev_op_asize = vdev_default_asize,
	.vdev_op_min_asize = vdev_default_min_asize,
	.vdev_op_min_alloc = NULL,
	.vdev_op_io_start = vdev_file_io_start,
	.vdev_op_io_done = vdev_file_io_done,
	.vdev_op_state_change = NULL,
	.vdev_op_need_resilver = NULL,
	.vdev_op_hold = vdev_file_hold,
	.vdev_op_rele = vdev_file_rele,
	.vdev_op_remap = NULL,
	.vdev_op_xlate = vdev_default_xlate,
	.vdev_op_rebuild_asize = NULL,
	.vdev_op_metaslab_init = NULL,
	.vdev_op_config_generate = NULL,
	.vdev_op_nparity = NULL,
	.vdev_op_ndisks = NULL,
	.vdev_op_type = VDEV_TYPE_FILE,		/* name of this vdev type */
	.vdev_op_leaf = B_TRUE			/* leaf vdev */
};

/*
 * From userland we access disks just like files.
 */
#ifndef _KERNEL

vdev_ops_t vdev_disk_ops = {
	.vdev_op_init = NULL,
	.vdev_op_fini = NULL,
	.vdev_op_open = vdev_file_open,
	.vdev_op_close = vdev_file_close,
	.vdev_op_asize = vdev_default_asize,
	.vdev_op_min_asize = vdev_default_min_asize,
	.vdev_op_min_alloc = NULL,
	.vdev_op_io_start = vdev_file_io_start,
	.vdev_op_io_done = vdev_file_io_done,
	.vdev_op_state_change = NULL,
	.vdev_op_need_resilver = NULL,
	.vdev_op_hold = vdev_file_hold,
	.vdev_op_rele = vdev_file_rele,
	.vdev_op_remap = NULL,
	.vdev_op_xlate = vdev_default_xlate,
	.vdev_op_rebuild_asize = NULL,
	.vdev_op_metaslab_init = NULL,
	.vdev_op_config_generate = NULL,
	.vdev_op_nparity = NULL,
	.vdev_op_ndisks = NULL,
	.vdev_op_type = VDEV_TYPE_DISK,		/* name of this vdev type */
	.vdev_op_leaf = B_TRUE			/* leaf vdev */
};

#endif

ZFS_MODULE_PARAM(zfs_vdev_file, vdev_file_, logical_ashift, ULONG, ZMOD_RW,
	"Logical ashift for file-based devices");
ZFS_MODULE_PARAM(zfs_vdev_file, vdev_file_, physical_ashift, ULONG, ZMOD_RW,
	"Physical ashift for file-based devices");
Commit	Line	Data
9f0a21e6 MM	1	/*
	2	* CDDL HEADER START
	3	*
	4	* The contents of this file are subject to the terms of the
	5	* Common Development and Distribution License (the "License").
	6	* You may not use this file except in compliance with the License.
	7	*
	8	* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
	9	* or http://www.opensolaris.org/os/licensing.
	10	* See the License for the specific language governing permissions
	11	* and limitations under the License.
	12	*
	13	* When distributing Covered Code, include this CDDL HEADER in each
	14	* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
	15	* If applicable, add the following below this CDDL HEADER, with the
	16	* fields enclosed by brackets "[]" replaced with your own identifying
	17	* information: Portions Copyright [yyyy] [name of copyright owner]
	18	*
	19	* CDDL HEADER END
	20	*/
	21	/*
	22	* Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
c494aa7f	23	* Copyright (c) 2011, 2020 by Delphix. All rights reserved.
9f0a21e6 MM	24	*/
	25
	26	#include <sys/zfs_context.h>
	27	#include <sys/spa.h>
7ddb753d	28	#include <sys/file.h>
9f0a21e6 MM	29	#include <sys/vdev_file.h>
	30	#include <sys/vdev_impl.h>
	31	#include <sys/zio.h>
	32	#include <sys/fs/zfs.h>
	33	#include <sys/fm/fs/zfs.h>
	34	#include <sys/abd.h>
	35	#include <sys/stat.h>
	36
	37	/*
	38	* Virtual device vector for files.
	39	*/
	40
	41	static taskq_t *vdev_file_taskq;
	42
c494aa7f GW	43	unsigned long vdev_file_logical_ashift = SPA_MINBLOCKSHIFT;
	44	unsigned long vdev_file_physical_ashift = SPA_MINBLOCKSHIFT;
	45
9f0a21e6 MM	46	void
	47	vdev_file_init(void)
	48	{
	49	vdev_file_taskq = taskq_create("z_vdev_file", MAX(max_ncpus, 16),
	50	minclsyspri, max_ncpus, INT_MAX, 0);
	51	}
	52
	53	void
	54	vdev_file_fini(void)
	55	{
	56	taskq_destroy(vdev_file_taskq);
	57	}
	58
	59	static void
	60	vdev_file_hold(vdev_t *vd)
	61	{
	62	ASSERT(vd->vdev_path != NULL);
	63	}
	64
	65	static void
	66	vdev_file_rele(vdev_t *vd)
	67	{
	68	ASSERT(vd->vdev_path != NULL);
	69	}
	70
	71	static mode_t
	72	vdev_file_open_mode(spa_mode_t spa_mode)
	73	{
	74	mode_t mode = 0;
	75
	76	if ((spa_mode & SPA_MODE_READ) && (spa_mode & SPA_MODE_WRITE)) {
	77	mode = O_RDWR;
	78	} else if (spa_mode & SPA_MODE_READ) {
	79	mode = O_RDONLY;
	80	} else if (spa_mode & SPA_MODE_WRITE) {
	81	mode = O_WRONLY;
	82	}
	83
	84	return (mode \| O_LARGEFILE);
	85	}
	86
	87	static int
	88	vdev_file_open(vdev_t vd, uint64_t psize, uint64_t *max_psize,
6fe3498c	89	uint64_t logical_ashift, uint64_t physical_ashift)
9f0a21e6 MM	90	{
	91	vdev_file_t *vf;
	92	zfs_file_t *fp;
	93	zfs_file_attr_t zfa;
	94	int error;
	95
	96	/*
	97	* Rotational optimizations only make sense on block devices.
	98	*/
	99	vd->vdev_nonrot = B_TRUE;
	100
	101	/*
	102	* Allow TRIM on file based vdevs. This may not always be supported,
	103	* since it depends on your kernel version and underlying filesystem
	104	* type but it is always safe to attempt.
	105	*/
	106	vd->vdev_has_trim = B_TRUE;
	107
	108	/*
	109	* Disable secure TRIM on file based vdevs. There is no way to
	110	* request this behavior from the underlying filesystem.
	111	*/
	112	vd->vdev_has_securetrim = B_FALSE;
	113
	114	/*
	115	* We must have a pathname, and it must be absolute.
	116	*/
	117	if (vd->vdev_path == NULL \|\| vd->vdev_path[0] != '/') {
	118	vd->vdev_stat.vs_aux = VDEV_AUX_BAD_LABEL;
	119	return (SET_ERROR(EINVAL));
	120	}
	121
	122	/*
	123	* Reopen the device if it's not currently open. Otherwise,
	124	* just update the physical size of the device.
	125	*/
	126	if (vd->vdev_tsd != NULL) {
	127	ASSERT(vd->vdev_reopening);
	128	vf = vd->vdev_tsd;
	129	goto skip_open;
	130	}
	131
	132	vf = vd->vdev_tsd = kmem_zalloc(sizeof (vdev_file_t), KM_SLEEP);
	133
	134	/*
	135	* We always open the files from the root of the global zone, even if
	136	* we're in a local zone. If the user has gotten to this point, the
	137	* administrator has already decided that the pool should be available
	138	* to local zone users, so the underlying devices should be as well.
	139	*/
	140	ASSERT(vd->vdev_path != NULL && vd->vdev_path[0] == '/');
	141
	142	error = zfs_file_open(vd->vdev_path,
	143	vdev_file_open_mode(spa_mode(vd->vdev_spa)), 0, &fp);
	144	if (error) {
	145	vd->vdev_stat.vs_aux = VDEV_AUX_OPEN_FAILED;
	146	return (error);
	147	}
	148
	149	vf->vf_file = fp;
	150
	151	#ifdef _KERNEL
	152	/*
	153	* Make sure it's a regular file.
154	*/
155	if (zfs_file_getattr(fp, &zfa)) {
156	return (SET_ERROR(ENODEV));
157	}
158	if (!S_ISREG(zfa.zfa_mode)) {
159	vd->vdev_stat.vs_aux = VDEV_AUX_OPEN_FAILED;
160	return (SET_ERROR(ENODEV));
161	}
162	#endif
163
164	skip_open:
165
166	error = zfs_file_getattr(vf->vf_file, &zfa);
167	if (error) {
168	vd->vdev_stat.vs_aux = VDEV_AUX_OPEN_FAILED;
169	return (error);
170	}
171
172	max_psize = psize = zfa.zfa_size;
c494aa7f GW	173	*logical_ashift = vdev_file_logical_ashift;
c494aa7f GW	174	*physical_ashift = vdev_file_physical_ashift;
9f0a21e6 MM	175
	176	return (0);
	177	}
	178
	179	static void
	180	vdev_file_close(vdev_t *vd)
	181	{
	182	vdev_file_t *vf = vd->vdev_tsd;
	183
	184	if (vd->vdev_reopening \|\| vf == NULL)
	185	return;
	186
	187	if (vf->vf_file != NULL) {
	188	zfs_file_close(vf->vf_file);
	189	}
	190
	191	vd->vdev_delayed_close = B_FALSE;
	192	kmem_free(vf, sizeof (vdev_file_t));
	193	vd->vdev_tsd = NULL;
	194	}
	195
	196	/*
	197	* Implements the interrupt side for file vdev types. This routine will be
	198	* called when the I/O completes allowing us to transfer the I/O to the
	199	* interrupt taskqs. For consistency, the code structure mimics disk vdev
	200	* types.
	201	*/
	202	static void
	203	vdev_file_io_intr(zio_t *zio)
	204	{
	205	zio_delay_interrupt(zio);
	206	}
	207
	208	static void
	209	vdev_file_io_strategy(void *arg)
	210	{
	211	zio_t *zio = arg;
	212	vdev_t *vd = zio->io_vd;
	213	vdev_file_t *vf;
	214	void *buf;
	215	ssize_t resid;
	216	loff_t off;
	217	ssize_t size;
	218	int err;
	219
	220	off = zio->io_offset;
	221	size = zio->io_size;
	222	resid = 0;
	223
	224	vf = vd->vdev_tsd;
	225
	226	ASSERT(zio->io_type == ZIO_TYPE_READ \|\| zio->io_type == ZIO_TYPE_WRITE);
	227	if (zio->io_type == ZIO_TYPE_READ) {
	228	buf = abd_borrow_buf(zio->io_abd, zio->io_size);
	229	err = zfs_file_pread(vf->vf_file, buf, size, off, &resid);
	230	abd_return_buf_copy(zio->io_abd, buf, size);
	231	} else {
	232	buf = abd_borrow_buf_copy(zio->io_abd, zio->io_size);
	233	err = zfs_file_pwrite(vf->vf_file, buf, size, off, &resid);
	234	abd_return_buf(zio->io_abd, buf, size);
	235	}
	236	if (resid != 0 && zio->io_error == 0)
	237	zio->io_error = ENOSPC;
	238
239	vdev_file_io_intr(zio);
240	}
241
242	static void
243	vdev_file_io_start(zio_t *zio)
244	{
245	vdev_t *vd = zio->io_vd;
246	vdev_file_t *vf = vd->vdev_tsd;
247
248	if (zio->io_type == ZIO_TYPE_IOCTL) {
249	/* XXPOLICY */
250	if (!vdev_readable(vd)) {
251	zio->io_error = SET_ERROR(ENXIO);
252	zio_interrupt(zio);
253	return;
254	}
255
256	switch (zio->io_cmd) {
257	case DKIOCFLUSHWRITECACHE:
258	zio->io_error = zfs_file_fsync(vf->vf_file,
259	O_SYNC\|O_DSYNC);
260	break;
261	default:
262	zio->io_error = SET_ERROR(ENOTSUP);
263	}
264
265	zio_execute(zio);
266	return;
267	} else if (zio->io_type == ZIO_TYPE_TRIM) {
268	#ifdef notyet
269	int mode = 0;
270
271	ASSERT3U(zio->io_size, !=, 0);
272
273	/* XXX FreeBSD has no fallocate routine in file ops */
274	zio->io_error = zfs_file_fallocate(vf->vf_file,
275	mode, zio->io_offset, zio->io_size);
276	#endif
277	zio->io_error = SET_ERROR(ENOTSUP);
278	zio_execute(zio);
279	return;
280	}
281	ASSERT(zio->io_type == ZIO_TYPE_READ \|\| zio->io_type == ZIO_TYPE_WRITE);
282	zio->io_target_timestamp = zio_handle_io_delay(zio);
283
284	VERIFY3U(taskq_dispatch(vdev_file_taskq, vdev_file_io_strategy, zio,
285	TQ_SLEEP), !=, 0);
286	}
287
288	/* ARGSUSED */
289	static void
290	vdev_file_io_done(zio_t *zio)
291	{
292	}
293
294	vdev_ops_t vdev_file_ops = {
b2255edc BB	295	.vdev_op_init = NULL,
	296	.vdev_op_fini = NULL,
	297	.vdev_op_open = vdev_file_open,
	298	.vdev_op_close = vdev_file_close,
	299	.vdev_op_asize = vdev_default_asize,
	300	.vdev_op_min_asize = vdev_default_min_asize,
	301	.vdev_op_min_alloc = NULL,
	302	.vdev_op_io_start = vdev_file_io_start,
	303	.vdev_op_io_done = vdev_file_io_done,
	304	.vdev_op_state_change = NULL,
	305	.vdev_op_need_resilver = NULL,
	306	.vdev_op_hold = vdev_file_hold,
	307	.vdev_op_rele = vdev_file_rele,
	308	.vdev_op_remap = NULL,
	309	.vdev_op_xlate = vdev_default_xlate,
	310	.vdev_op_rebuild_asize = NULL,
	311	.vdev_op_metaslab_init = NULL,
	312	.vdev_op_config_generate = NULL,
	313	.vdev_op_nparity = NULL,
	314	.vdev_op_ndisks = NULL,
	315	.vdev_op_type = VDEV_TYPE_FILE, /* name of this vdev type */
	316	.vdev_op_leaf = B_TRUE /* leaf vdev */
9f0a21e6 MM	317	};
	318
	319	/*
	320	* From userland we access disks just like files.
	321	*/
	322	#ifndef _KERNEL
	323
	324	vdev_ops_t vdev_disk_ops = {
b2255edc BB	325	.vdev_op_init = NULL,
	326	.vdev_op_fini = NULL,
	327	.vdev_op_open = vdev_file_open,
	328	.vdev_op_close = vdev_file_close,
	329	.vdev_op_asize = vdev_default_asize,
	330	.vdev_op_min_asize = vdev_default_min_asize,
	331	.vdev_op_min_alloc = NULL,
	332	.vdev_op_io_start = vdev_file_io_start,
	333	.vdev_op_io_done = vdev_file_io_done,
	334	.vdev_op_state_change = NULL,
	335	.vdev_op_need_resilver = NULL,
	336	.vdev_op_hold = vdev_file_hold,
	337	.vdev_op_rele = vdev_file_rele,
	338	.vdev_op_remap = NULL,
	339	.vdev_op_xlate = vdev_default_xlate,
	340	.vdev_op_rebuild_asize = NULL,
	341	.vdev_op_metaslab_init = NULL,
	342	.vdev_op_config_generate = NULL,
	343	.vdev_op_nparity = NULL,
	344	.vdev_op_ndisks = NULL,
	345	.vdev_op_type = VDEV_TYPE_DISK, /* name of this vdev type */
	346	.vdev_op_leaf = B_TRUE /* leaf vdev */
9f0a21e6 MM	347	};
	348
	349	#endif
c494aa7f GW	350
	351	ZFS_MODULE_PARAM(zfs_vdev_file, vdev_file_, logical_ashift, ULONG, ZMOD_RW,
	352	"Logical ashift for file-based devices");
	353	ZFS_MODULE_PARAM(zfs_vdev_file, vdev_file_, physical_ashift, ULONG, ZMOD_RW,
	354	"Physical ashift for file-based devices");