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. 25663207adSDon 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); 74a3874b8bSToomas Soome extern boolean_t vdev_dtl_need_resilver(vdev_t *vd, uint64_t off, size_t size); 75fa9e4066Sahrens extern void vdev_dtl_reassess(vdev_t *vd, uint64_t txg, uint64_t scrub_txg, 76fa9e4066Sahrens int scrub_done); 778ad4d6ddSJeff Bonwick extern boolean_t vdev_dtl_required(vdev_t *vd); 78088f3894Sahrens extern boolean_t vdev_resilver_needed(vdev_t *vd, 79088f3894Sahrens uint64_t *minp, uint64_t *maxp); 80215198a6SJoe Stein extern void vdev_destroy_unlink_zap(vdev_t *vd, uint64_t zapobj, 81215198a6SJoe Stein dmu_tx_t *tx); 82215198a6SJoe Stein extern uint64_t vdev_create_link_zap(vdev_t *vd, dmu_tx_t *tx); 83215198a6SJoe Stein extern void vdev_construct_zaps(vdev_t *vd, dmu_tx_t *tx); 845cabbc6bSPrashanth Sreenivasa extern void vdev_destroy_spacemaps(vdev_t *vd, dmu_tx_t *tx); 855cabbc6bSPrashanth Sreenivasa extern void vdev_indirect_mark_obsolete(vdev_t *vd, uint64_t offset, 8686714001SSerapheim Dimitropoulos uint64_t size); 875cabbc6bSPrashanth Sreenivasa extern void spa_vdev_indirect_mark_obsolete(spa_t *spa, uint64_t vdev, 885cabbc6bSPrashanth Sreenivasa uint64_t offset, uint64_t size, dmu_tx_t *tx); 89fa9e4066Sahrens 90dcba9f3fSGeorge Wilson extern void vdev_hold(vdev_t *); 91dcba9f3fSGeorge Wilson extern void vdev_rele(vdev_t *); 92dcba9f3fSGeorge Wilson 93ea8dc4b6Seschrock extern int vdev_metaslab_init(vdev_t *vd, uint64_t txg); 94fa9e4066Sahrens extern void vdev_metaslab_fini(vdev_t *vd); 95573ca77eSGeorge Wilson extern void vdev_metaslab_set_size(vdev_t *); 96573ca77eSGeorge Wilson extern void vdev_expand(vdev_t *vd, uint64_t txg); 971195e687SMark J Musante extern void vdev_split(vdev_t *vd); 98283b8460SGeorge.Wilson extern void vdev_deadman(vdev_t *vd); 991195e687SMark J Musante 100fa9e4066Sahrens extern void vdev_get_stats(vdev_t *vd, vdev_stat_t *vs); 101fa94a07fSbrendan extern void vdev_clear_stats(vdev_t *vd); 102e14bb325SJeff Bonwick extern void vdev_stat_update(zio_t *zio, uint64_t psize); 1033f9d6ad7SLin Ling extern void vdev_scan_stat_init(vdev_t *vd); 10444cd46caSbillm extern void vdev_propagate_state(vdev_t *vd); 105ea8dc4b6Seschrock extern void vdev_set_state(vdev_t *vd, boolean_t isopen, vdev_state_t state, 106ea8dc4b6Seschrock vdev_aux_t aux); 1076f793812SPavel Zakharov extern boolean_t vdev_children_are_offline(vdev_t *vd); 108fa9e4066Sahrens 109b24ab676SJeff Bonwick extern void vdev_space_update(vdev_t *vd, 110b24ab676SJeff Bonwick int64_t alloc_delta, int64_t defer_delta, int64_t space_delta); 111fa9e4066Sahrens 112663207adSDon Brady extern int64_t vdev_deflated_space(vdev_t *vd, int64_t space); 113663207adSDon Brady 114fa9e4066Sahrens extern uint64_t vdev_psize_to_asize(vdev_t *vd, uint64_t psize); 115fa9e4066Sahrens 116069f55e2SEric Schrock extern int vdev_fault(spa_t *spa, uint64_t guid, vdev_aux_t aux); 117069f55e2SEric Schrock extern int vdev_degrade(spa_t *spa, uint64_t guid, vdev_aux_t aux); 1183d7072f8Seschrock extern int vdev_online(spa_t *spa, uint64_t guid, uint64_t flags, 1193d7072f8Seschrock vdev_state_t *); 1203d7072f8Seschrock extern int vdev_offline(spa_t *spa, uint64_t guid, uint64_t flags); 121e14bb325SJeff Bonwick extern void vdev_clear(spa_t *spa, vdev_t *vd); 122fa9e4066Sahrens 123e14bb325SJeff Bonwick extern boolean_t vdev_is_dead(vdev_t *vd); 124e14bb325SJeff Bonwick extern boolean_t vdev_readable(vdev_t *vd); 125e14bb325SJeff Bonwick extern boolean_t vdev_writeable(vdev_t *vd); 126a31e6787SGeorge Wilson extern boolean_t vdev_allocatable(vdev_t *vd); 127e14bb325SJeff Bonwick extern boolean_t vdev_accessible(vdev_t *vd, zio_t *zio); 12886714001SSerapheim Dimitropoulos extern boolean_t vdev_is_spacemap_addressable(vdev_t *vd); 129fa9e4066Sahrens 130fa9e4066Sahrens extern void vdev_cache_init(vdev_t *vd); 131fa9e4066Sahrens extern void vdev_cache_fini(vdev_t *vd); 13243466aaeSMax Grossman extern boolean_t vdev_cache_read(zio_t *zio); 133fa9e4066Sahrens extern void vdev_cache_write(zio_t *zio); 1343d7072f8Seschrock extern void vdev_cache_purge(vdev_t *vd); 135fa9e4066Sahrens 136fa9e4066Sahrens extern void vdev_queue_init(vdev_t *vd); 137fa9e4066Sahrens extern void vdev_queue_fini(vdev_t *vd); 138fa9e4066Sahrens extern zio_t *vdev_queue_io(zio_t *zio); 139fa9e4066Sahrens extern void vdev_queue_io_done(zio_t *zio); 140a3874b8bSToomas Soome extern void vdev_queue_change_io_priority(zio_t *zio, zio_priority_t priority); 141fa9e4066Sahrens 142*12a8814cSTom Caputi extern int vdev_queue_length(vdev_t *vd); 143*12a8814cSTom Caputi extern uint64_t vdev_queue_last_offset(vdev_t *vd); 144*12a8814cSTom Caputi 145fa9e4066Sahrens extern void vdev_config_dirty(vdev_t *vd); 146fa9e4066Sahrens extern void vdev_config_clean(vdev_t *vd); 147eb5bb584SWill Andrews extern int vdev_config_sync(vdev_t **svd, int svdcount, uint64_t txg); 148e14bb325SJeff Bonwick 149e14bb325SJeff Bonwick extern void vdev_state_dirty(vdev_t *vd); 150e14bb325SJeff Bonwick extern void vdev_state_clean(vdev_t *vd); 151fa9e4066Sahrens 1523f9d6ad7SLin Ling typedef enum vdev_config_flag { 1533f9d6ad7SLin Ling VDEV_CONFIG_SPARE = 1 << 0, 1543f9d6ad7SLin Ling VDEV_CONFIG_L2CACHE = 1 << 1, 155215198a6SJoe Stein VDEV_CONFIG_REMOVING = 1 << 2, 1566f793812SPavel Zakharov VDEV_CONFIG_MOS = 1 << 3, 1576f793812SPavel Zakharov VDEV_CONFIG_MISSING = 1 << 4 1583f9d6ad7SLin Ling } vdev_config_flag_t; 1593f9d6ad7SLin Ling 16088ecc943SGeorge Wilson extern void vdev_top_config_generate(spa_t *spa, nvlist_t *config); 16199653d4eSeschrock extern nvlist_t *vdev_config_generate(spa_t *spa, vdev_t *vd, 1623f9d6ad7SLin Ling boolean_t getstats, vdev_config_flag_t flags); 163fa9e4066Sahrens 164fa9e4066Sahrens /* 165fa9e4066Sahrens * Label routines 166fa9e4066Sahrens */ 167fa9e4066Sahrens struct uberblock; 168fa9e4066Sahrens extern uint64_t vdev_label_offset(uint64_t psize, int l, uint64_t offset); 16921bf64a7Sgw extern int vdev_label_number(uint64_t psise, uint64_t offset); 170dfbb9432SGeorge Wilson extern nvlist_t *vdev_label_read_config(vdev_t *vd, uint64_t txg); 171ad135b5dSChristopher Siden extern void vdev_uberblock_load(vdev_t *, struct uberblock *, nvlist_t **); 172e0f1c0afSOlaf Faaland extern void vdev_label_write(zio_t *zio, vdev_t *vd, int l, abd_t *buf, uint64_t 173e0f1c0afSOlaf Faaland offset, uint64_t size, zio_done_func_t *done, void *private, int flags); 17439c23413Seschrock 17539c23413Seschrock typedef enum { 17639c23413Seschrock VDEV_LABEL_CREATE, /* create/add a new device */ 17739c23413Seschrock VDEV_LABEL_REPLACE, /* replace an existing device */ 17839c23413Seschrock VDEV_LABEL_SPARE, /* add a new hot spare */ 179fa94a07fSbrendan VDEV_LABEL_REMOVE, /* remove an existing device */ 1801195e687SMark J Musante VDEV_LABEL_L2CACHE, /* add an L2ARC cache device */ 1811195e687SMark J Musante VDEV_LABEL_SPLIT /* generating new label for split-off dev */ 18239c23413Seschrock } vdev_labeltype_t; 18339c23413Seschrock 18439c23413Seschrock extern int vdev_label_init(vdev_t *vd, uint64_t txg, vdev_labeltype_t reason); 185fa9e4066Sahrens 186fa9e4066Sahrens #ifdef __cplusplus 187fa9e4066Sahrens } 188fa9e4066Sahrens #endif 189fa9e4066Sahrens 190fa9e4066Sahrens #endif /* _SYS_VDEV_H */ 191