1/* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License (the "License"). 6 * You may not use this file except in compliance with the License. 7 * 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9 * or https://opensource.org/licenses/CDDL-1.0. 10 * See the License for the specific language governing permissions 11 * and limitations under the License. 12 * 13 * When distributing Covered Code, include this CDDL HEADER in each 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15 * If applicable, add the following below this CDDL HEADER, with the 16 * fields enclosed by brackets "[]" replaced with your own identifying 17 * information: Portions Copyright [yyyy] [name of copyright owner] 18 * 19 * CDDL HEADER END 20 */ 21 22/* 23 * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved. 24 * Copyright (c) 2011, 2020 by Delphix. All rights reserved. 25 * Copyright (c) 2017, Intel Corporation. 26 * Copyright (c) 2019, Datto Inc. All rights reserved. 27 */ 28 29#ifndef _SYS_VDEV_H 30#define _SYS_VDEV_H 31 32#include <sys/spa.h> 33#include <sys/zio.h> 34#include <sys/dmu.h> 35#include <sys/space_map.h> 36#include <sys/metaslab.h> 37#include <sys/fs/zfs.h> 38 39#ifdef __cplusplus 40extern "C" { 41#endif 42 43typedef enum vdev_dtl_type { 44 DTL_MISSING, /* 0% replication: no copies of the data */ 45 DTL_PARTIAL, /* less than 100% replication: some copies missing */ 46 DTL_SCRUB, /* unable to fully repair during scrub/resilver */ 47 DTL_OUTAGE, /* temporarily missing (used to attempt detach) */ 48 DTL_TYPES 49} vdev_dtl_type_t; 50 51extern int zfs_nocacheflush; 52 53typedef boolean_t vdev_open_children_func_t(vdev_t *vd); 54 55extern void vdev_dbgmsg(vdev_t *vd, const char *fmt, ...) 56 __attribute__((format(printf, 2, 3))); 57extern void vdev_dbgmsg_print_tree(vdev_t *, int); 58extern int vdev_open(vdev_t *); 59extern void vdev_open_children(vdev_t *); 60extern void vdev_open_children_subset(vdev_t *, vdev_open_children_func_t *); 61extern int vdev_validate(vdev_t *); 62extern int vdev_copy_path_strict(vdev_t *, vdev_t *); 63extern void vdev_copy_path_relaxed(vdev_t *, vdev_t *); 64extern void vdev_close(vdev_t *); 65extern int vdev_create(vdev_t *, uint64_t txg, boolean_t isreplace); 66extern void vdev_reopen(vdev_t *); 67extern int vdev_validate_aux(vdev_t *vd); 68extern zio_t *vdev_probe(vdev_t *vd, zio_t *pio); 69extern boolean_t vdev_is_concrete(vdev_t *vd); 70extern boolean_t vdev_is_bootable(vdev_t *vd); 71extern vdev_t *vdev_lookup_top(spa_t *spa, uint64_t vdev); 72extern vdev_t *vdev_lookup_by_guid(vdev_t *vd, uint64_t guid); 73extern int vdev_count_leaves(spa_t *spa); 74extern void vdev_dtl_dirty(vdev_t *vd, vdev_dtl_type_t d, 75 uint64_t txg, uint64_t size); 76extern boolean_t vdev_dtl_contains(vdev_t *vd, vdev_dtl_type_t d, 77 uint64_t txg, uint64_t size); 78extern boolean_t vdev_dtl_empty(vdev_t *vd, vdev_dtl_type_t d); 79extern boolean_t vdev_default_need_resilver(vdev_t *vd, const dva_t *dva, 80 size_t psize, uint64_t phys_birth); 81extern boolean_t vdev_dtl_need_resilver(vdev_t *vd, const dva_t *dva, 82 size_t psize, uint64_t phys_birth); 83extern void vdev_dtl_reassess(vdev_t *vd, uint64_t txg, uint64_t scrub_txg, 84 boolean_t scrub_done, boolean_t rebuild_done); 85extern boolean_t vdev_dtl_required(vdev_t *vd); 86extern boolean_t vdev_resilver_needed(vdev_t *vd, 87 uint64_t *minp, uint64_t *maxp); 88extern void vdev_destroy_unlink_zap(vdev_t *vd, uint64_t zapobj, 89 dmu_tx_t *tx); 90extern uint64_t vdev_create_link_zap(vdev_t *vd, dmu_tx_t *tx); 91extern void vdev_construct_zaps(vdev_t *vd, dmu_tx_t *tx); 92extern void vdev_destroy_spacemaps(vdev_t *vd, dmu_tx_t *tx); 93extern void vdev_indirect_mark_obsolete(vdev_t *vd, uint64_t offset, 94 uint64_t size); 95extern void spa_vdev_indirect_mark_obsolete(spa_t *spa, uint64_t vdev, 96 uint64_t offset, uint64_t size, dmu_tx_t *tx); 97extern boolean_t vdev_replace_in_progress(vdev_t *vdev); 98 99extern void vdev_hold(vdev_t *); 100extern void vdev_rele(vdev_t *); 101 102extern int vdev_metaslab_init(vdev_t *vd, uint64_t txg); 103extern void vdev_metaslab_fini(vdev_t *vd); 104extern void vdev_metaslab_set_size(vdev_t *); 105extern void vdev_expand(vdev_t *vd, uint64_t txg); 106extern void vdev_split(vdev_t *vd); 107extern void vdev_deadman(vdev_t *vd, const char *tag); 108 109typedef void vdev_xlate_func_t(void *arg, range_seg64_t *physical_rs); 110 111extern boolean_t vdev_xlate_is_empty(range_seg64_t *rs); 112extern void vdev_xlate(vdev_t *vd, const range_seg64_t *logical_rs, 113 range_seg64_t *physical_rs, range_seg64_t *remain_rs); 114extern void vdev_xlate_walk(vdev_t *vd, const range_seg64_t *logical_rs, 115 vdev_xlate_func_t *func, void *arg); 116 117extern void vdev_get_stats_ex(vdev_t *vd, vdev_stat_t *vs, vdev_stat_ex_t *vsx); 118 119extern metaslab_group_t *vdev_get_mg(vdev_t *vd, metaslab_class_t *mc); 120 121extern void vdev_get_stats(vdev_t *vd, vdev_stat_t *vs); 122extern void vdev_clear_stats(vdev_t *vd); 123extern void vdev_stat_update(zio_t *zio, uint64_t psize); 124extern void vdev_scan_stat_init(vdev_t *vd); 125extern void vdev_propagate_state(vdev_t *vd); 126extern void vdev_set_state(vdev_t *vd, boolean_t isopen, vdev_state_t state, 127 vdev_aux_t aux); 128extern boolean_t vdev_children_are_offline(vdev_t *vd); 129 130extern void vdev_space_update(vdev_t *vd, 131 int64_t alloc_delta, int64_t defer_delta, int64_t space_delta); 132 133extern int64_t vdev_deflated_space(vdev_t *vd, int64_t space); 134 135extern uint64_t vdev_psize_to_asize_txg(vdev_t *vd, uint64_t psize, 136 uint64_t txg); 137extern uint64_t vdev_psize_to_asize(vdev_t *vd, uint64_t psize); 138 139/* 140 * Return the amount of space allocated for a gang block header. Note that 141 * since the physical birth txg is not provided, this must be constant for 142 * a given vdev. (e.g. raidz expansion can't change this) 143 */ 144static inline uint64_t 145vdev_gang_header_asize(vdev_t *vd) 146{ 147 return (vdev_psize_to_asize_txg(vd, SPA_GANGBLOCKSIZE, 0)); 148} 149 150extern int vdev_fault(spa_t *spa, uint64_t guid, vdev_aux_t aux); 151extern int vdev_degrade(spa_t *spa, uint64_t guid, vdev_aux_t aux); 152extern int vdev_online(spa_t *spa, uint64_t guid, uint64_t flags, 153 vdev_state_t *); 154extern int vdev_offline(spa_t *spa, uint64_t guid, uint64_t flags); 155extern int vdev_remove_wanted(spa_t *spa, uint64_t guid); 156extern void vdev_clear(spa_t *spa, vdev_t *vd); 157 158extern boolean_t vdev_is_dead(vdev_t *vd); 159extern boolean_t vdev_readable(vdev_t *vd); 160extern boolean_t vdev_writeable(vdev_t *vd); 161extern boolean_t vdev_allocatable(vdev_t *vd); 162extern boolean_t vdev_accessible(vdev_t *vd, zio_t *zio); 163extern boolean_t vdev_is_spacemap_addressable(vdev_t *vd); 164 165extern void vdev_queue_init(vdev_t *vd); 166extern void vdev_queue_fini(vdev_t *vd); 167extern zio_t *vdev_queue_io(zio_t *zio); 168extern void vdev_queue_io_done(zio_t *zio); 169extern void vdev_queue_change_io_priority(zio_t *zio, zio_priority_t priority); 170 171extern uint32_t vdev_queue_length(vdev_t *vd); 172extern uint64_t vdev_queue_last_offset(vdev_t *vd); 173extern uint64_t vdev_queue_class_length(vdev_t *vq, zio_priority_t p); 174 175extern void vdev_config_dirty(vdev_t *vd); 176extern void vdev_config_clean(vdev_t *vd); 177extern int vdev_config_sync(vdev_t **svd, int svdcount, uint64_t txg); 178 179extern void vdev_state_dirty(vdev_t *vd); 180extern void vdev_state_clean(vdev_t *vd); 181 182extern void vdev_defer_resilver(vdev_t *vd); 183extern boolean_t vdev_clear_resilver_deferred(vdev_t *vd, dmu_tx_t *tx); 184 185typedef enum vdev_config_flag { 186 VDEV_CONFIG_SPARE = 1 << 0, 187 VDEV_CONFIG_L2CACHE = 1 << 1, 188 VDEV_CONFIG_MOS = 1 << 2, 189 VDEV_CONFIG_MISSING = 1 << 3 190} vdev_config_flag_t; 191 192extern void vdev_post_kobj_evt(vdev_t *vd); 193extern void vdev_clear_kobj_evt(vdev_t *vd); 194extern void vdev_top_config_generate(spa_t *spa, nvlist_t *config); 195extern nvlist_t *vdev_config_generate(spa_t *spa, vdev_t *vd, 196 boolean_t getstats, vdev_config_flag_t flags); 197 198/* 199 * Label routines 200 */ 201struct uberblock; 202extern uint64_t vdev_label_offset(uint64_t psize, int l, uint64_t offset); 203extern int vdev_label_number(uint64_t psise, uint64_t offset); 204extern nvlist_t *vdev_label_read_config(vdev_t *vd, uint64_t txg); 205extern void vdev_uberblock_load(vdev_t *, struct uberblock *, nvlist_t **); 206extern void vdev_config_generate_stats(vdev_t *vd, nvlist_t *nv); 207extern void vdev_label_write(zio_t *zio, vdev_t *vd, int l, abd_t *buf, uint64_t 208 offset, uint64_t size, zio_done_func_t *done, void *priv, int flags); 209extern int vdev_label_read_bootenv(vdev_t *, nvlist_t *); 210extern int vdev_label_write_bootenv(vdev_t *, nvlist_t *); 211extern int vdev_uberblock_sync_list(vdev_t **, int, struct uberblock *, int); 212extern int vdev_check_boot_reserve(spa_t *, vdev_t *); 213 214typedef enum { 215 VDEV_LABEL_CREATE, /* create/add a new device */ 216 VDEV_LABEL_REPLACE, /* replace an existing device */ 217 VDEV_LABEL_SPARE, /* add a new hot spare */ 218 VDEV_LABEL_REMOVE, /* remove an existing device */ 219 VDEV_LABEL_L2CACHE, /* add an L2ARC cache device */ 220 VDEV_LABEL_SPLIT /* generating new label for split-off dev */ 221} vdev_labeltype_t; 222 223extern int vdev_label_init(vdev_t *vd, uint64_t txg, vdev_labeltype_t reason); 224 225extern int vdev_prop_set(vdev_t *vd, nvlist_t *innvl, nvlist_t *outnvl); 226extern int vdev_prop_get(vdev_t *vd, nvlist_t *nvprops, nvlist_t *outnvl); 227 228#ifdef __cplusplus 229} 230#endif 231 232#endif /* _SYS_VDEV_H */ 233