1fa9e4066Sahrens /* 2fa9e4066Sahrens * CDDL HEADER START 3fa9e4066Sahrens * 4fa9e4066Sahrens * The contents of this file are subject to the terms of the 5441d80aaSlling * Common Development and Distribution License (the "License"). 6441d80aaSlling * You may not use this file except in compliance with the License. 7fa9e4066Sahrens * 8fa9e4066Sahrens * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9fa9e4066Sahrens * or http://www.opensolaris.org/os/licensing. 10fa9e4066Sahrens * See the License for the specific language governing permissions 11fa9e4066Sahrens * and limitations under the License. 12fa9e4066Sahrens * 13fa9e4066Sahrens * When distributing Covered Code, include this CDDL HEADER in each 14fa9e4066Sahrens * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15fa9e4066Sahrens * If applicable, add the following below this CDDL HEADER, with the 16fa9e4066Sahrens * fields enclosed by brackets "[]" replaced with your own identifying 17fa9e4066Sahrens * information: Portions Copyright [yyyy] [name of copyright owner] 18fa9e4066Sahrens * 19fa9e4066Sahrens * CDDL HEADER END 20fa9e4066Sahrens */ 21ad135b5dSChristopher Siden 22fa9e4066Sahrens /* 233f9d6ad7SLin Ling * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved. 2486714001SSerapheim Dimitropoulos * Copyright (c) 2011, 2017 by Delphix. All rights reserved. 25*663207adSDon Brady * Copyright (c) 2017, Intel Corporation. 26fa9e4066Sahrens */ 27fa9e4066Sahrens 28fa9e4066Sahrens #ifndef _SYS_VDEV_H 29fa9e4066Sahrens #define _SYS_VDEV_H 30fa9e4066Sahrens 31fa9e4066Sahrens #include <sys/spa.h> 32fa9e4066Sahrens #include <sys/zio.h> 33fa9e4066Sahrens #include <sys/dmu.h> 34fa9e4066Sahrens #include <sys/space_map.h> 35fa9e4066Sahrens #include <sys/fs/zfs.h> 36fa9e4066Sahrens 37fa9e4066Sahrens #ifdef __cplusplus 38fa9e4066Sahrens extern "C" { 39fa9e4066Sahrens #endif 40fa9e4066Sahrens 418ad4d6ddSJeff Bonwick typedef enum vdev_dtl_type { 428ad4d6ddSJeff Bonwick DTL_MISSING, /* 0% replication: no copies of the data */ 438ad4d6ddSJeff Bonwick DTL_PARTIAL, /* less than 100% replication: some copies missing */ 448ad4d6ddSJeff Bonwick DTL_SCRUB, /* unable to fully repair during scrub/resilver */ 458ad4d6ddSJeff Bonwick DTL_OUTAGE, /* temporarily missing (used to attempt detach) */ 468ad4d6ddSJeff Bonwick DTL_TYPES 478ad4d6ddSJeff Bonwick } vdev_dtl_type_t; 488ad4d6ddSJeff Bonwick 49416e0cd8Sek extern boolean_t zfs_nocacheflush; 50416e0cd8Sek 513ee8c80cSPavel Zakharov extern void vdev_dbgmsg(vdev_t *vd, const char *fmt, ...); 526f793812SPavel Zakharov extern void vdev_dbgmsg_print_tree(vdev_t *, int); 53fa9e4066Sahrens extern int vdev_open(vdev_t *); 54681d9761SEric Taylor extern void vdev_open_children(vdev_t *); 55681d9761SEric Taylor extern boolean_t vdev_uses_zvols(vdev_t *); 566f793812SPavel Zakharov extern int vdev_validate(vdev_t *); 576f793812SPavel Zakharov extern int vdev_copy_path_strict(vdev_t *, vdev_t *); 586f793812SPavel Zakharov extern void vdev_copy_path_relaxed(vdev_t *, vdev_t *); 59fa9e4066Sahrens extern void vdev_close(vdev_t *); 6099653d4eSeschrock extern int vdev_create(vdev_t *, uint64_t txg, boolean_t isreplace); 61ea8dc4b6Seschrock extern void vdev_reopen(vdev_t *); 62fa94a07fSbrendan extern int vdev_validate_aux(vdev_t *vd); 63e14bb325SJeff Bonwick extern zio_t *vdev_probe(vdev_t *vd, zio_t *pio); 645cabbc6bSPrashanth Sreenivasa extern boolean_t vdev_is_concrete(vdev_t *vd); 6515e6edf1Sgw extern boolean_t vdev_is_bootable(vdev_t *vd); 66fa9e4066Sahrens extern vdev_t *vdev_lookup_top(spa_t *spa, uint64_t vdev); 67fa9e4066Sahrens extern vdev_t *vdev_lookup_by_guid(vdev_t *vd, uint64_t guid); 6812380e1eSArne Jansen extern int vdev_count_leaves(spa_t *spa); 698ad4d6ddSJeff Bonwick extern void vdev_dtl_dirty(vdev_t *vd, vdev_dtl_type_t d, 708ad4d6ddSJeff Bonwick uint64_t txg, uint64_t size); 718ad4d6ddSJeff Bonwick extern boolean_t vdev_dtl_contains(vdev_t *vd, vdev_dtl_type_t d, 728ad4d6ddSJeff Bonwick uint64_t txg, uint64_t size); 738ad4d6ddSJeff Bonwick extern boolean_t vdev_dtl_empty(vdev_t *vd, vdev_dtl_type_t d); 74fa9e4066Sahrens extern void vdev_dtl_reassess(vdev_t *vd, uint64_t txg, uint64_t scrub_txg, 75fa9e4066Sahrens int scrub_done); 768ad4d6ddSJeff Bonwick extern boolean_t vdev_dtl_required(vdev_t *vd); 77088f3894Sahrens extern boolean_t vdev_resilver_needed(vdev_t *vd, 78088f3894Sahrens uint64_t *minp, uint64_t *maxp); 79215198a6SJoe Stein extern void vdev_destroy_unlink_zap(vdev_t *vd, uint64_t zapobj, 80215198a6SJoe Stein dmu_tx_t *tx); 81215198a6SJoe Stein extern uint64_t vdev_create_link_zap(vdev_t *vd, dmu_tx_t *tx); 82215198a6SJoe Stein extern void vdev_construct_zaps(vdev_t *vd, dmu_tx_t *tx); 835cabbc6bSPrashanth Sreenivasa extern void vdev_destroy_spacemaps(vdev_t *vd, dmu_tx_t *tx); 845cabbc6bSPrashanth Sreenivasa extern void vdev_indirect_mark_obsolete(vdev_t *vd, uint64_t offset, 8586714001SSerapheim Dimitropoulos uint64_t size); 865cabbc6bSPrashanth Sreenivasa extern void spa_vdev_indirect_mark_obsolete(spa_t *spa, uint64_t vdev, 875cabbc6bSPrashanth Sreenivasa uint64_t offset, uint64_t size, dmu_tx_t *tx); 88fa9e4066Sahrens 89dcba9f3fSGeorge Wilson extern void vdev_hold(vdev_t *); 90dcba9f3fSGeorge Wilson extern void vdev_rele(vdev_t *); 91dcba9f3fSGeorge Wilson 92ea8dc4b6Seschrock extern int vdev_metaslab_init(vdev_t *vd, uint64_t txg); 93fa9e4066Sahrens extern void vdev_metaslab_fini(vdev_t *vd); 94573ca77eSGeorge Wilson extern void vdev_metaslab_set_size(vdev_t *); 95573ca77eSGeorge Wilson extern void vdev_expand(vdev_t *vd, uint64_t txg); 961195e687SMark J Musante extern void vdev_split(vdev_t *vd); 97283b8460SGeorge.Wilson extern void vdev_deadman(vdev_t *vd); 981195e687SMark J Musante 99fa9e4066Sahrens extern void vdev_get_stats(vdev_t *vd, vdev_stat_t *vs); 100fa94a07fSbrendan extern void vdev_clear_stats(vdev_t *vd); 101e14bb325SJeff Bonwick extern void vdev_stat_update(zio_t *zio, uint64_t psize); 1023f9d6ad7SLin Ling extern void vdev_scan_stat_init(vdev_t *vd); 10344cd46caSbillm extern void vdev_propagate_state(vdev_t *vd); 104ea8dc4b6Seschrock extern void vdev_set_state(vdev_t *vd, boolean_t isopen, vdev_state_t state, 105ea8dc4b6Seschrock vdev_aux_t aux); 1066f793812SPavel Zakharov extern boolean_t vdev_children_are_offline(vdev_t *vd); 107fa9e4066Sahrens 108b24ab676SJeff Bonwick extern void vdev_space_update(vdev_t *vd, 109b24ab676SJeff Bonwick int64_t alloc_delta, int64_t defer_delta, int64_t space_delta); 110fa9e4066Sahrens 111*663207adSDon Brady extern int64_t vdev_deflated_space(vdev_t *vd, int64_t space); 112*663207adSDon Brady 113fa9e4066Sahrens extern uint64_t vdev_psize_to_asize(vdev_t *vd, uint64_t psize); 114fa9e4066Sahrens 115069f55e2SEric Schrock extern int vdev_fault(spa_t *spa, uint64_t guid, vdev_aux_t aux); 116069f55e2SEric Schrock extern int vdev_degrade(spa_t *spa, uint64_t guid, vdev_aux_t aux); 1173d7072f8Seschrock extern int vdev_online(spa_t *spa, uint64_t guid, uint64_t flags, 1183d7072f8Seschrock vdev_state_t *); 1193d7072f8Seschrock extern int vdev_offline(spa_t *spa, uint64_t guid, uint64_t flags); 120e14bb325SJeff Bonwick extern void vdev_clear(spa_t *spa, vdev_t *vd); 121fa9e4066Sahrens 122e14bb325SJeff Bonwick extern boolean_t vdev_is_dead(vdev_t *vd); 123e14bb325SJeff Bonwick extern boolean_t vdev_readable(vdev_t *vd); 124e14bb325SJeff Bonwick extern boolean_t vdev_writeable(vdev_t *vd); 125a31e6787SGeorge Wilson extern boolean_t vdev_allocatable(vdev_t *vd); 126e14bb325SJeff Bonwick extern boolean_t vdev_accessible(vdev_t *vd, zio_t *zio); 12786714001SSerapheim Dimitropoulos extern boolean_t vdev_is_spacemap_addressable(vdev_t *vd); 128fa9e4066Sahrens 129fa9e4066Sahrens extern void vdev_cache_init(vdev_t *vd); 130fa9e4066Sahrens extern void vdev_cache_fini(vdev_t *vd); 13143466aaeSMax Grossman extern boolean_t vdev_cache_read(zio_t *zio); 132fa9e4066Sahrens extern void vdev_cache_write(zio_t *zio); 1333d7072f8Seschrock extern void vdev_cache_purge(vdev_t *vd); 134fa9e4066Sahrens 135fa9e4066Sahrens extern void vdev_queue_init(vdev_t *vd); 136fa9e4066Sahrens extern void vdev_queue_fini(vdev_t *vd); 137fa9e4066Sahrens extern zio_t *vdev_queue_io(zio_t *zio); 138fa9e4066Sahrens extern void vdev_queue_io_done(zio_t *zio); 139fa9e4066Sahrens 140fa9e4066Sahrens extern void vdev_config_dirty(vdev_t *vd); 141fa9e4066Sahrens extern void vdev_config_clean(vdev_t *vd); 142eb5bb584SWill Andrews extern int vdev_config_sync(vdev_t **svd, int svdcount, uint64_t txg); 143e14bb325SJeff Bonwick 144e14bb325SJeff Bonwick extern void vdev_state_dirty(vdev_t *vd); 145e14bb325SJeff Bonwick extern void vdev_state_clean(vdev_t *vd); 146fa9e4066Sahrens 1473f9d6ad7SLin Ling typedef enum vdev_config_flag { 1483f9d6ad7SLin Ling VDEV_CONFIG_SPARE = 1 << 0, 1493f9d6ad7SLin Ling VDEV_CONFIG_L2CACHE = 1 << 1, 150215198a6SJoe Stein VDEV_CONFIG_REMOVING = 1 << 2, 1516f793812SPavel Zakharov VDEV_CONFIG_MOS = 1 << 3, 1526f793812SPavel Zakharov VDEV_CONFIG_MISSING = 1 << 4 1533f9d6ad7SLin Ling } vdev_config_flag_t; 1543f9d6ad7SLin Ling 15588ecc943SGeorge Wilson extern void vdev_top_config_generate(spa_t *spa, nvlist_t *config); 15699653d4eSeschrock extern nvlist_t *vdev_config_generate(spa_t *spa, vdev_t *vd, 1573f9d6ad7SLin Ling boolean_t getstats, vdev_config_flag_t flags); 158fa9e4066Sahrens 159fa9e4066Sahrens /* 160fa9e4066Sahrens * Label routines 161fa9e4066Sahrens */ 162fa9e4066Sahrens struct uberblock; 163fa9e4066Sahrens extern uint64_t vdev_label_offset(uint64_t psize, int l, uint64_t offset); 16421bf64a7Sgw extern int vdev_label_number(uint64_t psise, uint64_t offset); 165dfbb9432SGeorge Wilson extern nvlist_t *vdev_label_read_config(vdev_t *vd, uint64_t txg); 166ad135b5dSChristopher Siden extern void vdev_uberblock_load(vdev_t *, struct uberblock *, nvlist_t **); 167e0f1c0afSOlaf Faaland extern void vdev_label_write(zio_t *zio, vdev_t *vd, int l, abd_t *buf, uint64_t 168e0f1c0afSOlaf Faaland offset, uint64_t size, zio_done_func_t *done, void *private, int flags); 16939c23413Seschrock 17039c23413Seschrock typedef enum { 17139c23413Seschrock VDEV_LABEL_CREATE, /* create/add a new device */ 17239c23413Seschrock VDEV_LABEL_REPLACE, /* replace an existing device */ 17339c23413Seschrock VDEV_LABEL_SPARE, /* add a new hot spare */ 174fa94a07fSbrendan VDEV_LABEL_REMOVE, /* remove an existing device */ 1751195e687SMark J Musante VDEV_LABEL_L2CACHE, /* add an L2ARC cache device */ 1761195e687SMark J Musante VDEV_LABEL_SPLIT /* generating new label for split-off dev */ 17739c23413Seschrock } vdev_labeltype_t; 17839c23413Seschrock 17939c23413Seschrock extern int vdev_label_init(vdev_t *vd, uint64_t txg, vdev_labeltype_t reason); 180fa9e4066Sahrens 181fa9e4066Sahrens #ifdef __cplusplus 182fa9e4066Sahrens } 183fa9e4066Sahrens #endif 184fa9e4066Sahrens 185fa9e4066Sahrens #endif /* _SYS_VDEV_H */ 186