vdev.h revision 0e34b6a7bff4918432f0aa6b1dfaf73ac9df45b1
0a99555401a033704f1f171baab6db11fb5528f2Allan Foster/*
0a99555401a033704f1f171baab6db11fb5528f2Allan Foster * CDDL HEADER START
0a99555401a033704f1f171baab6db11fb5528f2Allan Foster *
0a99555401a033704f1f171baab6db11fb5528f2Allan Foster * The contents of this file are subject to the terms of the
0a99555401a033704f1f171baab6db11fb5528f2Allan Foster * Common Development and Distribution License (the "License").
0a99555401a033704f1f171baab6db11fb5528f2Allan Foster * You may not use this file except in compliance with the License.
0a99555401a033704f1f171baab6db11fb5528f2Allan Foster *
0a99555401a033704f1f171baab6db11fb5528f2Allan Foster * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
0a99555401a033704f1f171baab6db11fb5528f2Allan Foster * or http://www.opensolaris.org/os/licensing.
0a99555401a033704f1f171baab6db11fb5528f2Allan Foster * See the License for the specific language governing permissions
0a99555401a033704f1f171baab6db11fb5528f2Allan Foster * and limitations under the License.
0a99555401a033704f1f171baab6db11fb5528f2Allan Foster *
0a99555401a033704f1f171baab6db11fb5528f2Allan Foster * When distributing Covered Code, include this CDDL HEADER in each
0a99555401a033704f1f171baab6db11fb5528f2Allan Foster * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
0a99555401a033704f1f171baab6db11fb5528f2Allan Foster * If applicable, add the following below this CDDL HEADER, with the
0a99555401a033704f1f171baab6db11fb5528f2Allan Foster * fields enclosed by brackets "[]" replaced with your own identifying
0a99555401a033704f1f171baab6db11fb5528f2Allan Foster * information: Portions Copyright [yyyy] [name of copyright owner]
0a99555401a033704f1f171baab6db11fb5528f2Allan Foster *
0a99555401a033704f1f171baab6db11fb5528f2Allan Foster * CDDL HEADER END
0a99555401a033704f1f171baab6db11fb5528f2Allan Foster */
0a99555401a033704f1f171baab6db11fb5528f2Allan Foster/*
0a99555401a033704f1f171baab6db11fb5528f2Allan Foster * Copyright 2006 Sun Microsystems, Inc. All rights reserved.
0a99555401a033704f1f171baab6db11fb5528f2Allan Foster * Use is subject to license terms.
0a99555401a033704f1f171baab6db11fb5528f2Allan Foster */
0a99555401a033704f1f171baab6db11fb5528f2Allan Foster
0a99555401a033704f1f171baab6db11fb5528f2Allan Foster#ifndef _SYS_VDEV_H
0a99555401a033704f1f171baab6db11fb5528f2Allan Foster#define _SYS_VDEV_H
0a99555401a033704f1f171baab6db11fb5528f2Allan Foster
0a99555401a033704f1f171baab6db11fb5528f2Allan Foster#pragma ident "%Z%%M% %I% %E% SMI"
0a99555401a033704f1f171baab6db11fb5528f2Allan Foster
0a99555401a033704f1f171baab6db11fb5528f2Allan Foster#include <sys/spa.h>
b93185b577f7150fec37f9999b95b246d73bf63cjeff.schenk#include <sys/zio.h>
0a99555401a033704f1f171baab6db11fb5528f2Allan Foster#include <sys/dmu.h>
0a99555401a033704f1f171baab6db11fb5528f2Allan Foster#include <sys/space_map.h>
0a99555401a033704f1f171baab6db11fb5528f2Allan Foster#include <sys/fs/zfs.h>
0a99555401a033704f1f171baab6db11fb5528f2Allan Foster
0a99555401a033704f1f171baab6db11fb5528f2Allan Foster#ifdef __cplusplus
0a99555401a033704f1f171baab6db11fb5528f2Allan Fosterextern "C" {
0a99555401a033704f1f171baab6db11fb5528f2Allan Foster#endif
0a99555401a033704f1f171baab6db11fb5528f2Allan Foster
0a99555401a033704f1f171baab6db11fb5528f2Allan Foster/*
0a99555401a033704f1f171baab6db11fb5528f2Allan Foster * Vdev knobs.
0a99555401a033704f1f171baab6db11fb5528f2Allan Foster */
0a99555401a033704f1f171baab6db11fb5528f2Allan Fostertypedef struct vdev_knob {
0a99555401a033704f1f171baab6db11fb5528f2Allan Foster char *vk_name; /* knob name */
0a99555401a033704f1f171baab6db11fb5528f2Allan Foster char *vk_desc; /* knob description */
0a99555401a033704f1f171baab6db11fb5528f2Allan Foster uint64_t vk_min; /* minimum legal value */
0a99555401a033704f1f171baab6db11fb5528f2Allan Foster uint64_t vk_max; /* maximum legal value */
0a99555401a033704f1f171baab6db11fb5528f2Allan Foster uint64_t vk_default; /* default value */
0a99555401a033704f1f171baab6db11fb5528f2Allan Foster size_t vk_offset; /* offset into vdev_t */
0a99555401a033704f1f171baab6db11fb5528f2Allan Foster} vdev_knob_t;
0a99555401a033704f1f171baab6db11fb5528f2Allan Foster
0a99555401a033704f1f171baab6db11fb5528f2Allan Foster/*
0a99555401a033704f1f171baab6db11fb5528f2Allan Foster * Fault injection modes.
0a99555401a033704f1f171baab6db11fb5528f2Allan Foster */
0a99555401a033704f1f171baab6db11fb5528f2Allan Foster#define VDEV_FAULT_NONE 0
0a99555401a033704f1f171baab6db11fb5528f2Allan Foster#define VDEV_FAULT_RANDOM 1
0a99555401a033704f1f171baab6db11fb5528f2Allan Foster#define VDEV_FAULT_COUNT 2
0a99555401a033704f1f171baab6db11fb5528f2Allan Foster
0a99555401a033704f1f171baab6db11fb5528f2Allan Fosterextern int vdev_open(vdev_t *);
b93185b577f7150fec37f9999b95b246d73bf63cjeff.schenkextern void vdev_close(vdev_t *);
0a99555401a033704f1f171baab6db11fb5528f2Allan Fosterextern int vdev_create(vdev_t *, uint64_t txg);
0a99555401a033704f1f171baab6db11fb5528f2Allan Fosterextern void vdev_init(vdev_t *, uint64_t txg);
0a99555401a033704f1f171baab6db11fb5528f2Allan Fosterextern void vdev_reopen(vdev_t *);
0a99555401a033704f1f171baab6db11fb5528f2Allan Foster
0a99555401a033704f1f171baab6db11fb5528f2Allan Fosterextern vdev_t *vdev_lookup_top(spa_t *spa, uint64_t vdev);
0a99555401a033704f1f171baab6db11fb5528f2Allan Fosterextern vdev_t *vdev_lookup_by_guid(vdev_t *vd, uint64_t guid);
0a99555401a033704f1f171baab6db11fb5528f2Allan Fosterextern void vdev_dtl_dirty(space_map_t *sm, uint64_t txg, uint64_t size);
0a99555401a033704f1f171baab6db11fb5528f2Allan Fosterextern int vdev_dtl_contains(space_map_t *sm, uint64_t txg, uint64_t size);
0a99555401a033704f1f171baab6db11fb5528f2Allan Fosterextern void vdev_dtl_reassess(vdev_t *vd, uint64_t txg, uint64_t scrub_txg,
0a99555401a033704f1f171baab6db11fb5528f2Allan Foster int scrub_done);
0a99555401a033704f1f171baab6db11fb5528f2Allan Foster
0a99555401a033704f1f171baab6db11fb5528f2Allan Fosterextern const char *vdev_description(vdev_t *vd);
0a99555401a033704f1f171baab6db11fb5528f2Allan Foster
0a99555401a033704f1f171baab6db11fb5528f2Allan Fosterextern int vdev_metaslab_init(vdev_t *vd, uint64_t txg);
0a99555401a033704f1f171baab6db11fb5528f2Allan Fosterextern void vdev_metaslab_fini(vdev_t *vd);
0a99555401a033704f1f171baab6db11fb5528f2Allan Foster
0a99555401a033704f1f171baab6db11fb5528f2Allan Fosterextern void vdev_get_stats(vdev_t *vd, vdev_stat_t *vs);
0a99555401a033704f1f171baab6db11fb5528f2Allan Fosterextern 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_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 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);
extern int spa_sync_labels(spa_t *spa, uint64_t txg);
#ifdef __cplusplus
}
#endif
#endif /* _SYS_VDEV_H */