vdev.h revision 3d7072f8bd27709dba14f6fe336f149d25d9e207
fa9e4066f08beec538e775443c5be79dd423fcabahrens/*
fa9e4066f08beec538e775443c5be79dd423fcabahrens * CDDL HEADER START
fa9e4066f08beec538e775443c5be79dd423fcabahrens *
fa9e4066f08beec538e775443c5be79dd423fcabahrens * The contents of this file are subject to the terms of the
441d80aa4f613b6298fc8bd3151f4be02dbf84fclling * Common Development and Distribution License (the "License").
441d80aa4f613b6298fc8bd3151f4be02dbf84fclling * You may not use this file except in compliance with the License.
fa9e4066f08beec538e775443c5be79dd423fcabahrens *
fa9e4066f08beec538e775443c5be79dd423fcabahrens * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
fa9e4066f08beec538e775443c5be79dd423fcabahrens * or http://www.opensolaris.org/os/licensing.
fa9e4066f08beec538e775443c5be79dd423fcabahrens * See the License for the specific language governing permissions
fa9e4066f08beec538e775443c5be79dd423fcabahrens * and limitations under the License.
fa9e4066f08beec538e775443c5be79dd423fcabahrens *
fa9e4066f08beec538e775443c5be79dd423fcabahrens * When distributing Covered Code, include this CDDL HEADER in each
fa9e4066f08beec538e775443c5be79dd423fcabahrens * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
fa9e4066f08beec538e775443c5be79dd423fcabahrens * If applicable, add the following below this CDDL HEADER, with the
fa9e4066f08beec538e775443c5be79dd423fcabahrens * fields enclosed by brackets "[]" replaced with your own identifying
fa9e4066f08beec538e775443c5be79dd423fcabahrens * information: Portions Copyright [yyyy] [name of copyright owner]
fa9e4066f08beec538e775443c5be79dd423fcabahrens *
fa9e4066f08beec538e775443c5be79dd423fcabahrens * CDDL HEADER END
fa9e4066f08beec538e775443c5be79dd423fcabahrens */
fa9e4066f08beec538e775443c5be79dd423fcabahrens/*
39c23413b8df94a95f67b34cfd4a4dfc3fd0b48deschrock * Copyright 2007 Sun Microsystems, Inc. All rights reserved.
fa9e4066f08beec538e775443c5be79dd423fcabahrens * Use is subject to license terms.
fa9e4066f08beec538e775443c5be79dd423fcabahrens */
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens#ifndef _SYS_VDEV_H
fa9e4066f08beec538e775443c5be79dd423fcabahrens#define _SYS_VDEV_H
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens#pragma ident "%Z%%M% %I% %E% SMI"
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens#include <sys/spa.h>
fa9e4066f08beec538e775443c5be79dd423fcabahrens#include <sys/zio.h>
fa9e4066f08beec538e775443c5be79dd423fcabahrens#include <sys/dmu.h>
fa9e4066f08beec538e775443c5be79dd423fcabahrens#include <sys/space_map.h>
fa9e4066f08beec538e775443c5be79dd423fcabahrens#include <sys/fs/zfs.h>
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens#ifdef __cplusplus
fa9e4066f08beec538e775443c5be79dd423fcabahrensextern "C" {
fa9e4066f08beec538e775443c5be79dd423fcabahrens#endif
fa9e4066f08beec538e775443c5be79dd423fcabahrens
416e0cd82df71e380f21199abde8c5f7a18bac51ekextern boolean_t zfs_nocacheflush;
416e0cd82df71e380f21199abde8c5f7a18bac51ek
fa9e4066f08beec538e775443c5be79dd423fcabahrens/*
fa9e4066f08beec538e775443c5be79dd423fcabahrens * Fault injection modes.
fa9e4066f08beec538e775443c5be79dd423fcabahrens */
fa9e4066f08beec538e775443c5be79dd423fcabahrens#define VDEV_FAULT_NONE 0
fa9e4066f08beec538e775443c5be79dd423fcabahrens#define VDEV_FAULT_RANDOM 1
fa9e4066f08beec538e775443c5be79dd423fcabahrens#define VDEV_FAULT_COUNT 2
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrensextern int vdev_open(vdev_t *);
560e6e964ab70b838deafc93f6d9da97f690ec25eschrockextern int vdev_validate(vdev_t *);
fa9e4066f08beec538e775443c5be79dd423fcabahrensextern void vdev_close(vdev_t *);
99653d4ee642c6528e88224f12409a5f23060994eschrockextern int vdev_create(vdev_t *, uint64_t txg, boolean_t isreplace);
0e34b6a7bff4918432f0aa6b1dfaf73ac9df45b1bonwickextern void vdev_init(vdev_t *, uint64_t txg);
ea8dc4b6d2251b437950c0056bc626b311c73c27eschrockextern void vdev_reopen(vdev_t *);
99653d4ee642c6528e88224f12409a5f23060994eschrockextern int vdev_validate_spare(vdev_t *);
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrensextern vdev_t *vdev_lookup_top(spa_t *spa, uint64_t vdev);
fa9e4066f08beec538e775443c5be79dd423fcabahrensextern vdev_t *vdev_lookup_by_guid(vdev_t *vd, uint64_t guid);
fa9e4066f08beec538e775443c5be79dd423fcabahrensextern void vdev_dtl_dirty(space_map_t *sm, uint64_t txg, uint64_t size);
fa9e4066f08beec538e775443c5be79dd423fcabahrensextern int vdev_dtl_contains(space_map_t *sm, uint64_t txg, uint64_t size);
fa9e4066f08beec538e775443c5be79dd423fcabahrensextern void vdev_dtl_reassess(vdev_t *vd, uint64_t txg, uint64_t scrub_txg,
fa9e4066f08beec538e775443c5be79dd423fcabahrens int scrub_done);
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrensextern const char *vdev_description(vdev_t *vd);
fa9e4066f08beec538e775443c5be79dd423fcabahrens
ea8dc4b6d2251b437950c0056bc626b311c73c27eschrockextern int vdev_metaslab_init(vdev_t *vd, uint64_t txg);
fa9e4066f08beec538e775443c5be79dd423fcabahrensextern void vdev_metaslab_fini(vdev_t *vd);
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrensextern void vdev_get_stats(vdev_t *vd, vdev_stat_t *vs);
fa9e4066f08beec538e775443c5be79dd423fcabahrensextern void vdev_stat_update(zio_t *zio);
fa9e4066f08beec538e775443c5be79dd423fcabahrensextern void vdev_scrub_stat_update(vdev_t *vd, pool_scrub_type_t type,
fa9e4066f08beec538e775443c5be79dd423fcabahrens boolean_t complete);
fa9e4066f08beec538e775443c5be79dd423fcabahrensextern int vdev_getspec(spa_t *spa, uint64_t vdev, char **vdev_spec);
44cd46cadd9aab751dae6a4023c1cb5bf316d274billmextern void vdev_propagate_state(vdev_t *vd);
ea8dc4b6d2251b437950c0056bc626b311c73c27eschrockextern void vdev_set_state(vdev_t *vd, boolean_t isopen, vdev_state_t state,
ea8dc4b6d2251b437950c0056bc626b311c73c27eschrock vdev_aux_t aux);
fa9e4066f08beec538e775443c5be79dd423fcabahrens
99653d4ee642c6528e88224f12409a5f23060994eschrockextern void vdev_space_update(vdev_t *vd, int64_t space_delta,
99653d4ee642c6528e88224f12409a5f23060994eschrock int64_t alloc_delta);
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrensextern uint64_t vdev_psize_to_asize(vdev_t *vd, uint64_t psize);
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrensextern void vdev_io_start(zio_t *zio);
fa9e4066f08beec538e775443c5be79dd423fcabahrensextern void vdev_io_done(zio_t *zio);
fa9e4066f08beec538e775443c5be79dd423fcabahrens
3d7072f8bd27709dba14f6fe336f149d25d9e207eschrockextern int vdev_fault(spa_t *spa, uint64_t guid);
3d7072f8bd27709dba14f6fe336f149d25d9e207eschrockextern int vdev_degrade(spa_t *spa, uint64_t guid);
3d7072f8bd27709dba14f6fe336f149d25d9e207eschrockextern int vdev_online(spa_t *spa, uint64_t guid, uint64_t flags,
3d7072f8bd27709dba14f6fe336f149d25d9e207eschrock vdev_state_t *);
3d7072f8bd27709dba14f6fe336f149d25d9e207eschrockextern int vdev_offline(spa_t *spa, uint64_t guid, uint64_t flags);
ea8dc4b6d2251b437950c0056bc626b311c73c27eschrockextern void vdev_clear(spa_t *spa, vdev_t *vd);
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrensextern int vdev_error_inject(vdev_t *vd, zio_t *zio);
fa9e4066f08beec538e775443c5be79dd423fcabahrensextern int vdev_is_dead(vdev_t *vd);
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrensextern void vdev_cache_init(vdev_t *vd);
fa9e4066f08beec538e775443c5be79dd423fcabahrensextern void vdev_cache_fini(vdev_t *vd);
fa9e4066f08beec538e775443c5be79dd423fcabahrensextern int vdev_cache_read(zio_t *zio);
fa9e4066f08beec538e775443c5be79dd423fcabahrensextern void vdev_cache_write(zio_t *zio);
3d7072f8bd27709dba14f6fe336f149d25d9e207eschrockextern void vdev_cache_purge(vdev_t *vd);
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrensextern void vdev_queue_init(vdev_t *vd);
fa9e4066f08beec538e775443c5be79dd423fcabahrensextern void vdev_queue_fini(vdev_t *vd);
fa9e4066f08beec538e775443c5be79dd423fcabahrensextern zio_t *vdev_queue_io(zio_t *zio);
fa9e4066f08beec538e775443c5be79dd423fcabahrensextern void vdev_queue_io_done(zio_t *zio);
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrensextern void vdev_config_dirty(vdev_t *vd);
fa9e4066f08beec538e775443c5be79dd423fcabahrensextern void vdev_config_clean(vdev_t *vd);
0373e76b3c3643df49ef3483e0f293fdea61d8c6bonwickextern int vdev_config_sync(vdev_t *vd, uint64_t txg);
fa9e4066f08beec538e775443c5be79dd423fcabahrens
99653d4ee642c6528e88224f12409a5f23060994eschrockextern nvlist_t *vdev_config_generate(spa_t *spa, vdev_t *vd,
99653d4ee642c6528e88224f12409a5f23060994eschrock boolean_t getstats, boolean_t isspare);
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens/*
fa9e4066f08beec538e775443c5be79dd423fcabahrens * Label routines
fa9e4066f08beec538e775443c5be79dd423fcabahrens */
fa9e4066f08beec538e775443c5be79dd423fcabahrensstruct uberblock;
fa9e4066f08beec538e775443c5be79dd423fcabahrensextern uint64_t vdev_label_offset(uint64_t psize, int l, uint64_t offset);
fa9e4066f08beec538e775443c5be79dd423fcabahrensextern nvlist_t *vdev_label_read_config(vdev_t *vd);
fa9e4066f08beec538e775443c5be79dd423fcabahrensextern void vdev_uberblock_load(zio_t *zio, vdev_t *vd, struct uberblock *ub);
39c23413b8df94a95f67b34cfd4a4dfc3fd0b48deschrock
39c23413b8df94a95f67b34cfd4a4dfc3fd0b48deschrocktypedef enum {
39c23413b8df94a95f67b34cfd4a4dfc3fd0b48deschrock VDEV_LABEL_CREATE, /* create/add a new device */
39c23413b8df94a95f67b34cfd4a4dfc3fd0b48deschrock VDEV_LABEL_REPLACE, /* replace an existing device */
39c23413b8df94a95f67b34cfd4a4dfc3fd0b48deschrock VDEV_LABEL_SPARE, /* add a new hot spare */
39c23413b8df94a95f67b34cfd4a4dfc3fd0b48deschrock VDEV_LABEL_REMOVE /* remove an existing device */
39c23413b8df94a95f67b34cfd4a4dfc3fd0b48deschrock} vdev_labeltype_t;
39c23413b8df94a95f67b34cfd4a4dfc3fd0b48deschrock
39c23413b8df94a95f67b34cfd4a4dfc3fd0b48deschrockextern int vdev_label_init(vdev_t *vd, uint64_t txg, vdev_labeltype_t reason);
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens#ifdef __cplusplus
fa9e4066f08beec538e775443c5be79dd423fcabahrens}
fa9e4066f08beec538e775443c5be79dd423fcabahrens#endif
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens#endif /* _SYS_VDEV_H */