1168404Spjd/* 2168404Spjd * CDDL HEADER START 3168404Spjd * 4168404Spjd * The contents of this file are subject to the terms of the 5168404Spjd * Common Development and Distribution License (the "License"). 6168404Spjd * You may not use this file except in compliance with the License. 7168404Spjd * 8168404Spjd * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9168404Spjd * or http://www.opensolaris.org/os/licensing. 10168404Spjd * See the License for the specific language governing permissions 11168404Spjd * and limitations under the License. 12168404Spjd * 13168404Spjd * When distributing Covered Code, include this CDDL HEADER in each 14168404Spjd * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15168404Spjd * If applicable, add the following below this CDDL HEADER, with the 16168404Spjd * fields enclosed by brackets "[]" replaced with your own identifying 17168404Spjd * information: Portions Copyright [yyyy] [name of copyright owner] 18168404Spjd * 19168404Spjd * CDDL HEADER END 20168404Spjd */ 21236884Smm 22168404Spjd/* 23219089Spjd * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved. 24263397Sdelphij * Copyright (c) 2013 by Delphix. All rights reserved. 25168404Spjd */ 26168404Spjd 27168404Spjd#ifndef _SYS_VDEV_H 28168404Spjd#define _SYS_VDEV_H 29168404Spjd 30168404Spjd#include <sys/spa.h> 31168404Spjd#include <sys/zio.h> 32168404Spjd#include <sys/dmu.h> 33168404Spjd#include <sys/space_map.h> 34168404Spjd#include <sys/fs/zfs.h> 35168404Spjd 36168404Spjd#ifdef __cplusplus 37168404Spjdextern "C" { 38168404Spjd#endif 39168404Spjd 40209962Smmtypedef enum vdev_dtl_type { 41209962Smm DTL_MISSING, /* 0% replication: no copies of the data */ 42209962Smm DTL_PARTIAL, /* less than 100% replication: some copies missing */ 43209962Smm DTL_SCRUB, /* unable to fully repair during scrub/resilver */ 44209962Smm DTL_OUTAGE, /* temporarily missing (used to attempt detach) */ 45209962Smm DTL_TYPES 46209962Smm} vdev_dtl_type_t; 47209962Smm 48168404Spjdextern boolean_t zfs_nocacheflush; 49249921Ssmhextern boolean_t zfs_trim_enabled; 50168404Spjd 51168404Spjdextern int vdev_open(vdev_t *); 52219089Spjdextern void vdev_open_children(vdev_t *); 53219089Spjdextern boolean_t vdev_uses_zvols(vdev_t *); 54230514Smmextern int vdev_validate(vdev_t *, boolean_t); 55168404Spjdextern void vdev_close(vdev_t *); 56168404Spjdextern int vdev_create(vdev_t *, uint64_t txg, boolean_t isreplace); 57168404Spjdextern void vdev_reopen(vdev_t *); 58185029Spjdextern int vdev_validate_aux(vdev_t *vd); 59185029Spjdextern zio_t *vdev_probe(vdev_t *vd, zio_t *pio); 60168404Spjd 61185029Spjdextern boolean_t vdev_is_bootable(vdev_t *vd); 62168404Spjdextern vdev_t *vdev_lookup_top(spa_t *spa, uint64_t vdev); 63168404Spjdextern vdev_t *vdev_lookup_by_guid(vdev_t *vd, uint64_t guid); 64288569Smavextern int vdev_count_leaves(spa_t *spa); 65209962Smmextern void vdev_dtl_dirty(vdev_t *vd, vdev_dtl_type_t d, 66209962Smm uint64_t txg, uint64_t size); 67209962Smmextern boolean_t vdev_dtl_contains(vdev_t *vd, vdev_dtl_type_t d, 68209962Smm uint64_t txg, uint64_t size); 69209962Smmextern boolean_t vdev_dtl_empty(vdev_t *vd, vdev_dtl_type_t d); 70168404Spjdextern void vdev_dtl_reassess(vdev_t *vd, uint64_t txg, uint64_t scrub_txg, 71168404Spjd int scrub_done); 72209962Smmextern boolean_t vdev_dtl_required(vdev_t *vd); 73185029Spjdextern boolean_t vdev_resilver_needed(vdev_t *vd, 74185029Spjd uint64_t *minp, uint64_t *maxp); 75168404Spjd 76219089Spjdextern void vdev_hold(vdev_t *); 77219089Spjdextern void vdev_rele(vdev_t *); 78219089Spjd 79168404Spjdextern int vdev_metaslab_init(vdev_t *vd, uint64_t txg); 80168404Spjdextern void vdev_metaslab_fini(vdev_t *vd); 81219089Spjdextern void vdev_metaslab_set_size(vdev_t *); 82254591Sgibbsextern void vdev_ashift_optimize(vdev_t *); 83219089Spjdextern void vdev_expand(vdev_t *vd, uint64_t txg); 84219089Spjdextern void vdev_split(vdev_t *vd); 85247265Smmextern void vdev_deadman(vdev_t *vd); 86168404Spjd 87219089Spjd 88168404Spjdextern void vdev_get_stats(vdev_t *vd, vdev_stat_t *vs); 89185029Spjdextern void vdev_clear_stats(vdev_t *vd); 90185029Spjdextern void vdev_stat_update(zio_t *zio, uint64_t psize); 91219089Spjdextern void vdev_scan_stat_init(vdev_t *vd); 92168404Spjdextern void vdev_propagate_state(vdev_t *vd); 93168404Spjdextern void vdev_set_state(vdev_t *vd, boolean_t isopen, vdev_state_t state, 94168404Spjd vdev_aux_t aux); 95168404Spjd 96219089Spjdextern void vdev_space_update(vdev_t *vd, 97219089Spjd int64_t alloc_delta, int64_t defer_delta, int64_t space_delta); 98168404Spjd 99168404Spjdextern uint64_t vdev_psize_to_asize(vdev_t *vd, uint64_t psize); 100168404Spjd 101219089Spjdextern int vdev_fault(spa_t *spa, uint64_t guid, vdev_aux_t aux); 102219089Spjdextern int vdev_degrade(spa_t *spa, uint64_t guid, vdev_aux_t aux); 103185029Spjdextern int vdev_online(spa_t *spa, uint64_t guid, uint64_t flags, 104185029Spjd vdev_state_t *); 105185029Spjdextern int vdev_offline(spa_t *spa, uint64_t guid, uint64_t flags); 106168404Spjdextern void vdev_clear(spa_t *spa, vdev_t *vd); 107168404Spjd 108185029Spjdextern boolean_t vdev_is_dead(vdev_t *vd); 109185029Spjdextern boolean_t vdev_readable(vdev_t *vd); 110185029Spjdextern boolean_t vdev_writeable(vdev_t *vd); 111208370Smmextern boolean_t vdev_allocatable(vdev_t *vd); 112185029Spjdextern boolean_t vdev_accessible(vdev_t *vd, zio_t *zio); 113168404Spjd 114168404Spjdextern void vdev_cache_init(vdev_t *vd); 115168404Spjdextern void vdev_cache_fini(vdev_t *vd); 116263397Sdelphijextern boolean_t vdev_cache_read(zio_t *zio); 117168404Spjdextern void vdev_cache_write(zio_t *zio); 118185029Spjdextern void vdev_cache_purge(vdev_t *vd); 119168404Spjd 120168404Spjdextern void vdev_queue_init(vdev_t *vd); 121168404Spjdextern void vdev_queue_fini(vdev_t *vd); 122168404Spjdextern zio_t *vdev_queue_io(zio_t *zio); 123168404Spjdextern void vdev_queue_io_done(zio_t *zio); 124271238Ssmhextern int vdev_queue_length(vdev_t *vd); 125271238Ssmhextern uint64_t vdev_queue_lastoffset(vdev_t *vd); 126271238Ssmhextern void vdev_queue_register_lastoffset(vdev_t *vd, zio_t *zio); 127168404Spjd 128168404Spjdextern void vdev_config_dirty(vdev_t *vd); 129168404Spjdextern void vdev_config_clean(vdev_t *vd); 130297100Smavextern int vdev_config_sync(vdev_t **svd, int svdcount, uint64_t txg); 131168404Spjd 132185029Spjdextern void vdev_state_dirty(vdev_t *vd); 133185029Spjdextern void vdev_state_clean(vdev_t *vd); 134185029Spjd 135219089Spjdtypedef enum vdev_config_flag { 136219089Spjd VDEV_CONFIG_SPARE = 1 << 0, 137219089Spjd VDEV_CONFIG_L2CACHE = 1 << 1, 138219089Spjd VDEV_CONFIG_REMOVING = 1 << 2 139219089Spjd} vdev_config_flag_t; 140219089Spjd 141219089Spjdextern void vdev_top_config_generate(spa_t *spa, nvlist_t *config); 142168404Spjdextern nvlist_t *vdev_config_generate(spa_t *spa, vdev_t *vd, 143219089Spjd boolean_t getstats, vdev_config_flag_t flags); 144168404Spjd 145168404Spjd/* 146168404Spjd * Label routines 147168404Spjd */ 148168404Spjdstruct uberblock; 149168404Spjdextern uint64_t vdev_label_offset(uint64_t psize, int l, uint64_t offset); 150185029Spjdextern int vdev_label_number(uint64_t psise, uint64_t offset); 151239620Smmextern nvlist_t *vdev_label_read_config(vdev_t *vd, uint64_t txg); 152236884Smmextern void vdev_uberblock_load(vdev_t *, struct uberblock *, nvlist_t **); 153168404Spjd 154168404Spjdtypedef enum { 155168404Spjd VDEV_LABEL_CREATE, /* create/add a new device */ 156168404Spjd VDEV_LABEL_REPLACE, /* replace an existing device */ 157168404Spjd VDEV_LABEL_SPARE, /* add a new hot spare */ 158185029Spjd VDEV_LABEL_REMOVE, /* remove an existing device */ 159219089Spjd VDEV_LABEL_L2CACHE, /* add an L2ARC cache device */ 160219089Spjd VDEV_LABEL_SPLIT /* generating new label for split-off dev */ 161168404Spjd} vdev_labeltype_t; 162168404Spjd 163168404Spjdextern int vdev_label_init(vdev_t *vd, uint64_t txg, vdev_labeltype_t reason); 164168404Spjd 165308915Savgextern int vdev_label_write_pad2(vdev_t *vd, const char *buf, size_t size); 166308915Savg 167168404Spjd#ifdef __cplusplus 168168404Spjd} 169168404Spjd#endif 170168404Spjd 171168404Spjd#endif /* _SYS_VDEV_H */ 172