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 */ 21fa9e4066Sahrens /* 228956713aSEric Schrock * Copyright 2009 Sun Microsystems, Inc. All rights reserved. 23fa9e4066Sahrens * Use is subject to license terms. 24fa9e4066Sahrens */ 25fa9e4066Sahrens 26fa9e4066Sahrens #ifndef _SYS_VDEV_H 27fa9e4066Sahrens #define _SYS_VDEV_H 28fa9e4066Sahrens 29fa9e4066Sahrens #include <sys/spa.h> 30fa9e4066Sahrens #include <sys/zio.h> 31fa9e4066Sahrens #include <sys/dmu.h> 32fa9e4066Sahrens #include <sys/space_map.h> 33fa9e4066Sahrens #include <sys/fs/zfs.h> 34fa9e4066Sahrens 35fa9e4066Sahrens #ifdef __cplusplus 36fa9e4066Sahrens extern "C" { 37fa9e4066Sahrens #endif 38fa9e4066Sahrens 398ad4d6ddSJeff Bonwick typedef enum vdev_dtl_type { 408ad4d6ddSJeff Bonwick DTL_MISSING, /* 0% replication: no copies of the data */ 418ad4d6ddSJeff Bonwick DTL_PARTIAL, /* less than 100% replication: some copies missing */ 428ad4d6ddSJeff Bonwick DTL_SCRUB, /* unable to fully repair during scrub/resilver */ 438ad4d6ddSJeff Bonwick DTL_OUTAGE, /* temporarily missing (used to attempt detach) */ 448ad4d6ddSJeff Bonwick DTL_TYPES 458ad4d6ddSJeff Bonwick } vdev_dtl_type_t; 468ad4d6ddSJeff Bonwick 47416e0cd8Sek extern boolean_t zfs_nocacheflush; 48416e0cd8Sek 49fa9e4066Sahrens extern int vdev_open(vdev_t *); 50681d9761SEric Taylor extern void vdev_open_children(vdev_t *); 51681d9761SEric Taylor extern boolean_t vdev_uses_zvols(vdev_t *); 52560e6e96Seschrock extern int vdev_validate(vdev_t *); 53fa9e4066Sahrens extern void vdev_close(vdev_t *); 5499653d4eSeschrock extern int vdev_create(vdev_t *, uint64_t txg, boolean_t isreplace); 55ea8dc4b6Seschrock extern void vdev_reopen(vdev_t *); 56fa94a07fSbrendan extern int vdev_validate_aux(vdev_t *vd); 57e14bb325SJeff Bonwick extern zio_t *vdev_probe(vdev_t *vd, zio_t *pio); 58fa9e4066Sahrens 5915e6edf1Sgw extern boolean_t vdev_is_bootable(vdev_t *vd); 60fa9e4066Sahrens extern vdev_t *vdev_lookup_top(spa_t *spa, uint64_t vdev); 61fa9e4066Sahrens extern vdev_t *vdev_lookup_by_guid(vdev_t *vd, uint64_t guid); 628ad4d6ddSJeff Bonwick extern void vdev_dtl_dirty(vdev_t *vd, vdev_dtl_type_t d, 638ad4d6ddSJeff Bonwick uint64_t txg, uint64_t size); 648ad4d6ddSJeff Bonwick extern boolean_t vdev_dtl_contains(vdev_t *vd, vdev_dtl_type_t d, 658ad4d6ddSJeff Bonwick uint64_t txg, uint64_t size); 668ad4d6ddSJeff Bonwick extern boolean_t vdev_dtl_empty(vdev_t *vd, vdev_dtl_type_t d); 67fa9e4066Sahrens extern void vdev_dtl_reassess(vdev_t *vd, uint64_t txg, uint64_t scrub_txg, 68fa9e4066Sahrens int scrub_done); 698ad4d6ddSJeff Bonwick extern boolean_t vdev_dtl_required(vdev_t *vd); 70088f3894Sahrens extern boolean_t vdev_resilver_needed(vdev_t *vd, 71088f3894Sahrens uint64_t *minp, uint64_t *maxp); 72fa9e4066Sahrens 73ea8dc4b6Seschrock extern int vdev_metaslab_init(vdev_t *vd, uint64_t txg); 74fa9e4066Sahrens extern void vdev_metaslab_fini(vdev_t *vd); 75573ca77eSGeorge Wilson extern void vdev_metaslab_set_size(vdev_t *); 76573ca77eSGeorge Wilson extern void vdev_expand(vdev_t *vd, uint64_t txg); 77fa9e4066Sahrens 78fa9e4066Sahrens extern void vdev_get_stats(vdev_t *vd, vdev_stat_t *vs); 79fa94a07fSbrendan extern void vdev_clear_stats(vdev_t *vd); 80e14bb325SJeff Bonwick extern void vdev_stat_update(zio_t *zio, uint64_t psize); 81fa9e4066Sahrens extern void vdev_scrub_stat_update(vdev_t *vd, pool_scrub_type_t type, 82fa9e4066Sahrens boolean_t complete); 8344cd46caSbillm extern void vdev_propagate_state(vdev_t *vd); 84ea8dc4b6Seschrock extern void vdev_set_state(vdev_t *vd, boolean_t isopen, vdev_state_t state, 85ea8dc4b6Seschrock vdev_aux_t aux); 86fa9e4066Sahrens 87*b24ab676SJeff Bonwick extern void vdev_space_update(vdev_t *vd, 88*b24ab676SJeff Bonwick int64_t alloc_delta, int64_t defer_delta, int64_t space_delta); 89fa9e4066Sahrens 90fa9e4066Sahrens extern uint64_t vdev_psize_to_asize(vdev_t *vd, uint64_t psize); 91fa9e4066Sahrens 92069f55e2SEric Schrock extern int vdev_fault(spa_t *spa, uint64_t guid, vdev_aux_t aux); 93069f55e2SEric Schrock extern int vdev_degrade(spa_t *spa, uint64_t guid, vdev_aux_t aux); 943d7072f8Seschrock extern int vdev_online(spa_t *spa, uint64_t guid, uint64_t flags, 953d7072f8Seschrock vdev_state_t *); 963d7072f8Seschrock extern int vdev_offline(spa_t *spa, uint64_t guid, uint64_t flags); 97e14bb325SJeff Bonwick extern void vdev_clear(spa_t *spa, vdev_t *vd); 98fa9e4066Sahrens 99e14bb325SJeff Bonwick extern boolean_t vdev_is_dead(vdev_t *vd); 100e14bb325SJeff Bonwick extern boolean_t vdev_readable(vdev_t *vd); 101e14bb325SJeff Bonwick extern boolean_t vdev_writeable(vdev_t *vd); 102a31e6787SGeorge Wilson extern boolean_t vdev_allocatable(vdev_t *vd); 103e14bb325SJeff Bonwick extern boolean_t vdev_accessible(vdev_t *vd, zio_t *zio); 104fa9e4066Sahrens 105fa9e4066Sahrens extern void vdev_cache_init(vdev_t *vd); 106fa9e4066Sahrens extern void vdev_cache_fini(vdev_t *vd); 107fa9e4066Sahrens extern int vdev_cache_read(zio_t *zio); 108fa9e4066Sahrens extern void vdev_cache_write(zio_t *zio); 1093d7072f8Seschrock extern void vdev_cache_purge(vdev_t *vd); 110fa9e4066Sahrens 111fa9e4066Sahrens extern void vdev_queue_init(vdev_t *vd); 112fa9e4066Sahrens extern void vdev_queue_fini(vdev_t *vd); 113fa9e4066Sahrens extern zio_t *vdev_queue_io(zio_t *zio); 114fa9e4066Sahrens extern void vdev_queue_io_done(zio_t *zio); 115fa9e4066Sahrens 116fa9e4066Sahrens extern void vdev_config_dirty(vdev_t *vd); 117fa9e4066Sahrens extern void vdev_config_clean(vdev_t *vd); 1188956713aSEric Schrock extern int vdev_config_sync(vdev_t **svd, int svdcount, uint64_t txg, 1198956713aSEric Schrock boolean_t); 120e14bb325SJeff Bonwick 121e14bb325SJeff Bonwick extern void vdev_state_dirty(vdev_t *vd); 122e14bb325SJeff Bonwick extern void vdev_state_clean(vdev_t *vd); 123fa9e4066Sahrens 12488ecc943SGeorge Wilson extern void vdev_top_config_generate(spa_t *spa, nvlist_t *config); 12599653d4eSeschrock extern nvlist_t *vdev_config_generate(spa_t *spa, vdev_t *vd, 126fa94a07fSbrendan boolean_t getstats, boolean_t isspare, boolean_t isl2cache); 127fa9e4066Sahrens 128fa9e4066Sahrens /* 129fa9e4066Sahrens * Label routines 130fa9e4066Sahrens */ 131fa9e4066Sahrens struct uberblock; 132fa9e4066Sahrens extern uint64_t vdev_label_offset(uint64_t psize, int l, uint64_t offset); 13321bf64a7Sgw extern int vdev_label_number(uint64_t psise, uint64_t offset); 134fa9e4066Sahrens extern nvlist_t *vdev_label_read_config(vdev_t *vd); 135fa9e4066Sahrens extern void vdev_uberblock_load(zio_t *zio, vdev_t *vd, struct uberblock *ub); 13639c23413Seschrock 13739c23413Seschrock typedef enum { 13839c23413Seschrock VDEV_LABEL_CREATE, /* create/add a new device */ 13939c23413Seschrock VDEV_LABEL_REPLACE, /* replace an existing device */ 14039c23413Seschrock VDEV_LABEL_SPARE, /* add a new hot spare */ 141fa94a07fSbrendan VDEV_LABEL_REMOVE, /* remove an existing device */ 142fa94a07fSbrendan VDEV_LABEL_L2CACHE /* add an L2ARC cache device */ 14339c23413Seschrock } vdev_labeltype_t; 14439c23413Seschrock 14539c23413Seschrock extern int vdev_label_init(vdev_t *vd, uint64_t txg, vdev_labeltype_t reason); 146fa9e4066Sahrens 147fa9e4066Sahrens #ifdef __cplusplus 148fa9e4066Sahrens } 149fa9e4066Sahrens #endif 150fa9e4066Sahrens 151fa9e4066Sahrens #endif /* _SYS_VDEV_H */ 152