vdev.h revision 560e6e964ab70b838deafc93f6d9da97f690ec25
40N/A/*
40N/A * CDDL HEADER START
40N/A *
40N/A * The contents of this file are subject to the terms of the
943N/A * Common Development and Distribution License (the "License").
40N/A * You may not use this file except in compliance with the License.
40N/A *
919N/A * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
919N/A * or http://www.opensolaris.org/os/licensing.
919N/A * See the License for the specific language governing permissions
919N/A * and limitations under the License.
919N/A *
919N/A * When distributing Covered Code, include this CDDL HEADER in each
919N/A * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
919N/A * If applicable, add the following below this CDDL HEADER, with the
919N/A * fields enclosed by brackets "[]" replaced with your own identifying
919N/A * information: Portions Copyright [yyyy] [name of copyright owner]
919N/A *
919N/A * CDDL HEADER END
919N/A */
919N/A/*
919N/A * Copyright 2006 Sun Microsystems, Inc. All rights reserved.
919N/A * Use is subject to license terms.
919N/A */
40N/A
40N/A#ifndef _SYS_VDEV_H
40N/A#define _SYS_VDEV_H
70N/A
493N/A#pragma ident "%Z%%M% %I% %E% SMI"
40N/A
40N/A#include <sys/spa.h>
851N/A#include <sys/zio.h>
40N/A#include <sys/dmu.h>
911N/A#include <sys/space_map.h>
911N/A#include <sys/fs/zfs.h>
911N/A
911N/A#ifdef __cplusplus
40N/Aextern "C" {
40N/A#endif
40N/A
40N/A/*
40N/A * Vdev knobs.
40N/A */
40N/Atypedef struct vdev_knob {
40N/A char *vk_name; /* knob name */
70N/A char *vk_desc; /* knob description */
493N/A uint64_t vk_min; /* minimum legal value */
947N/A uint64_t vk_max; /* maximum legal value */
947N/A uint64_t vk_default; /* default value */
70N/A size_t vk_offset; /* offset into vdev_t */
40N/A} vdev_knob_t;
40N/A
493N/A/*
40N/A * Fault injection modes.
920N/A */
920N/A#define VDEV_FAULT_NONE 0
40N/A#define VDEV_FAULT_RANDOM 1
70N/A#define VDEV_FAULT_COUNT 2
70N/A
40N/Aextern int vdev_open(vdev_t *);
70N/Aextern int vdev_validate(vdev_t *);
extern void vdev_close(vdev_t *);
extern int vdev_create(vdev_t *, uint64_t txg);
extern void vdev_init(vdev_t *, uint64_t txg);
extern void vdev_reopen(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, uint64_t space_delta,
uint64_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_online(spa_t *spa, uint64_t guid);
extern int vdev_offline(spa_t *spa, uint64_t guid, int istmp);
extern void vdev_clear(spa_t *spa, vdev_t *vd);
extern int vdev_error_inject(vdev_t *vd, zio_t *zio);
extern int vdev_is_dead(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_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 vdev_knob_t *vdev_knob_next(vdev_knob_t *vk);
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(vdev_t *vd, int getstats);
/*
* 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);
int vdev_label_init(vdev_t *vd, uint64_t create_txg);
#ifdef __cplusplus
}
#endif
#endif /* _SYS_VDEV_H */