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/*
* 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 2007 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
#ifndef _SYS_VDEV_H
#define _SYS_VDEV_H
#pragma ident "%Z%%M% %I% %E% SMI"
#include <sys/spa.h>
#include <sys/zio.h>
#include <sys/dmu.h>
#include <sys/space_map.h>
#include <sys/fs/zfs.h>
#ifdef __cplusplus
extern "C" {
#endif
extern boolean_t zfs_nocacheflush;
/*
* Fault injection modes.
*/
#define VDEV_FAULT_NONE 0
#define VDEV_FAULT_RANDOM 1
#define VDEV_FAULT_COUNT 2
extern int vdev_open(vdev_t *);
extern int vdev_validate(vdev_t *);
extern void vdev_close(vdev_t *);
extern int vdev_create(vdev_t *, uint64_t txg, boolean_t isreplace);
extern void vdev_init(vdev_t *, uint64_t txg);
extern void vdev_reopen(vdev_t *);
extern int vdev_validate_spare(vdev_t *);
extern int vdev_probe(vdev_t *);
extern vdev_t *vdev_lookup_top(spa_t *spa, uint64_t vdev);
extern vdev_t *vdev_lookup_by_guid(vdev_t *vd, uint64_t guid);
extern void vdev_dtl_dirty(space_map_t *sm, uint64_t txg, uint64_t size);
extern int vdev_dtl_contains(space_map_t *sm, uint64_t txg, uint64_t size);
extern void vdev_dtl_reassess(vdev_t *vd, uint64_t txg, uint64_t scrub_txg,
int scrub_done);
extern const char *vdev_description(vdev_t *vd);
extern int vdev_metaslab_init(vdev_t *vd, uint64_t txg);
extern void vdev_metaslab_fini(vdev_t *vd);
extern void vdev_get_stats(vdev_t *vd, vdev_stat_t *vs);
extern void vdev_stat_update(zio_t *zio);
extern void vdev_scrub_stat_update(vdev_t *vd, pool_scrub_type_t type,
boolean_t complete);
extern int vdev_getspec(spa_t *spa, uint64_t vdev, char **vdev_spec);
extern void vdev_propagate_state(vdev_t *vd);
extern void vdev_set_state(vdev_t *vd, boolean_t isopen, vdev_state_t state,
vdev_aux_t aux);
extern void vdev_space_update(vdev_t *vd, int64_t space_delta,
int64_t alloc_delta);
extern uint64_t vdev_psize_to_asize(vdev_t *vd, uint64_t psize);
extern void vdev_io_start(zio_t *zio);
extern void vdev_io_done(zio_t *zio);
extern int vdev_fault(spa_t *spa, uint64_t guid);
extern int vdev_degrade(spa_t *spa, uint64_t guid);
extern int vdev_online(spa_t *spa, uint64_t guid, uint64_t flags,
vdev_state_t *);
extern int vdev_offline(spa_t *spa, uint64_t guid, uint64_t flags);
extern void vdev_clear(spa_t *spa, vdev_t *vd, boolean_t reopen_wanted);
extern int vdev_error_inject(vdev_t *vd, zio_t *zio);
extern int vdev_is_dead(vdev_t *vd);
extern int vdev_readable(vdev_t *vd);
extern int vdev_writeable(vdev_t *vd);
extern void vdev_cache_init(vdev_t *vd);
extern void vdev_cache_fini(vdev_t *vd);
extern int vdev_cache_read(zio_t *zio);
extern void vdev_cache_write(zio_t *zio);
extern void vdev_cache_purge(vdev_t *vd);
extern void vdev_queue_init(vdev_t *vd);
extern void vdev_queue_fini(vdev_t *vd);
extern zio_t *vdev_queue_io(zio_t *zio);
extern void vdev_queue_io_done(zio_t *zio);
extern void vdev_config_dirty(vdev_t *vd);
extern void vdev_config_clean(vdev_t *vd);
extern int vdev_config_sync(vdev_t *vd, uint64_t txg);
extern nvlist_t *vdev_config_generate(spa_t *spa, vdev_t *vd,
boolean_t getstats, boolean_t isspare);
/*
* Label routines
*/
struct uberblock;
extern uint64_t vdev_label_offset(uint64_t psize, int l, uint64_t offset);
extern nvlist_t *vdev_label_read_config(vdev_t *vd);
extern void vdev_uberblock_load(zio_t *zio, vdev_t *vd, struct uberblock *ub);
typedef enum {
VDEV_LABEL_CREATE, /* create/add a new device */
VDEV_LABEL_REPLACE, /* replace an existing device */
VDEV_LABEL_SPARE, /* add a new hot spare */
VDEV_LABEL_REMOVE /* remove an existing device */
} vdev_labeltype_t;
extern int vdev_label_init(vdev_t *vd, uint64_t txg, vdev_labeltype_t reason);
#ifdef __cplusplus
}
#endif
#endif /* _SYS_VDEV_H */
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