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 /* 2221bf64a7Sgw * Copyright 2008 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 39416e0cd8Sek extern boolean_t zfs_nocacheflush; 40416e0cd8Sek 41fa9e4066Sahrens extern int vdev_open(vdev_t *); 42560e6e96Seschrock extern int vdev_validate(vdev_t *); 43fa9e4066Sahrens extern void vdev_close(vdev_t *); 4499653d4eSeschrock extern int vdev_create(vdev_t *, uint64_t txg, boolean_t isreplace); 450e34b6a7Sbonwick extern void vdev_init(vdev_t *, uint64_t txg); 46ea8dc4b6Seschrock extern void vdev_reopen(vdev_t *); 47fa94a07fSbrendan extern int vdev_validate_aux(vdev_t *vd); 48*e14bb325SJeff Bonwick extern zio_t *vdev_probe(vdev_t *vd, zio_t *pio); 49fa9e4066Sahrens 5015e6edf1Sgw extern boolean_t vdev_is_bootable(vdev_t *vd); 51fa9e4066Sahrens extern vdev_t *vdev_lookup_top(spa_t *spa, uint64_t vdev); 52fa9e4066Sahrens extern vdev_t *vdev_lookup_by_guid(vdev_t *vd, uint64_t guid); 53fa9e4066Sahrens extern void vdev_dtl_dirty(space_map_t *sm, uint64_t txg, uint64_t size); 54fa9e4066Sahrens extern int vdev_dtl_contains(space_map_t *sm, uint64_t txg, uint64_t size); 55fa9e4066Sahrens extern void vdev_dtl_reassess(vdev_t *vd, uint64_t txg, uint64_t scrub_txg, 56fa9e4066Sahrens int scrub_done); 57088f3894Sahrens extern boolean_t vdev_resilver_needed(vdev_t *vd, 58088f3894Sahrens uint64_t *minp, uint64_t *maxp); 59fa9e4066Sahrens 60ea8dc4b6Seschrock extern int vdev_metaslab_init(vdev_t *vd, uint64_t txg); 61fa9e4066Sahrens extern void vdev_metaslab_fini(vdev_t *vd); 62fa9e4066Sahrens 63fa9e4066Sahrens extern void vdev_get_stats(vdev_t *vd, vdev_stat_t *vs); 64fa94a07fSbrendan extern void vdev_clear_stats(vdev_t *vd); 65*e14bb325SJeff Bonwick extern void vdev_stat_update(zio_t *zio, uint64_t psize); 66fa9e4066Sahrens extern void vdev_scrub_stat_update(vdev_t *vd, pool_scrub_type_t type, 67fa9e4066Sahrens boolean_t complete); 68fa9e4066Sahrens extern int vdev_getspec(spa_t *spa, uint64_t vdev, char **vdev_spec); 6944cd46caSbillm extern void vdev_propagate_state(vdev_t *vd); 70ea8dc4b6Seschrock extern void vdev_set_state(vdev_t *vd, boolean_t isopen, vdev_state_t state, 71ea8dc4b6Seschrock vdev_aux_t aux); 72fa9e4066Sahrens 7399653d4eSeschrock extern void vdev_space_update(vdev_t *vd, int64_t space_delta, 74fa94a07fSbrendan int64_t alloc_delta, boolean_t update_root); 75fa9e4066Sahrens 76fa9e4066Sahrens extern uint64_t vdev_psize_to_asize(vdev_t *vd, uint64_t psize); 77fa9e4066Sahrens 783d7072f8Seschrock extern int vdev_fault(spa_t *spa, uint64_t guid); 793d7072f8Seschrock extern int vdev_degrade(spa_t *spa, uint64_t guid); 803d7072f8Seschrock extern int vdev_online(spa_t *spa, uint64_t guid, uint64_t flags, 813d7072f8Seschrock vdev_state_t *); 823d7072f8Seschrock extern int vdev_offline(spa_t *spa, uint64_t guid, uint64_t flags); 83*e14bb325SJeff Bonwick extern void vdev_clear(spa_t *spa, vdev_t *vd); 84fa9e4066Sahrens 85*e14bb325SJeff Bonwick extern boolean_t vdev_is_dead(vdev_t *vd); 86*e14bb325SJeff Bonwick extern boolean_t vdev_readable(vdev_t *vd); 87*e14bb325SJeff Bonwick extern boolean_t vdev_writeable(vdev_t *vd); 88*e14bb325SJeff Bonwick extern boolean_t vdev_accessible(vdev_t *vd, zio_t *zio); 89fa9e4066Sahrens 90fa9e4066Sahrens extern void vdev_cache_init(vdev_t *vd); 91fa9e4066Sahrens extern void vdev_cache_fini(vdev_t *vd); 92fa9e4066Sahrens extern int vdev_cache_read(zio_t *zio); 93fa9e4066Sahrens extern void vdev_cache_write(zio_t *zio); 943d7072f8Seschrock extern void vdev_cache_purge(vdev_t *vd); 95fa9e4066Sahrens 96fa9e4066Sahrens extern void vdev_queue_init(vdev_t *vd); 97fa9e4066Sahrens extern void vdev_queue_fini(vdev_t *vd); 98fa9e4066Sahrens extern zio_t *vdev_queue_io(zio_t *zio); 99fa9e4066Sahrens extern void vdev_queue_io_done(zio_t *zio); 100fa9e4066Sahrens 101fa9e4066Sahrens extern void vdev_config_dirty(vdev_t *vd); 102fa9e4066Sahrens extern void vdev_config_clean(vdev_t *vd); 103*e14bb325SJeff Bonwick extern int vdev_config_sync(vdev_t **svd, int svdcount, uint64_t txg); 104*e14bb325SJeff Bonwick 105*e14bb325SJeff Bonwick extern void vdev_state_dirty(vdev_t *vd); 106*e14bb325SJeff Bonwick extern void vdev_state_clean(vdev_t *vd); 107fa9e4066Sahrens 10899653d4eSeschrock extern nvlist_t *vdev_config_generate(spa_t *spa, vdev_t *vd, 109fa94a07fSbrendan boolean_t getstats, boolean_t isspare, boolean_t isl2cache); 110fa9e4066Sahrens 111fa9e4066Sahrens /* 112fa9e4066Sahrens * Label routines 113fa9e4066Sahrens */ 114fa9e4066Sahrens struct uberblock; 115fa9e4066Sahrens extern uint64_t vdev_label_offset(uint64_t psize, int l, uint64_t offset); 11621bf64a7Sgw extern int vdev_label_number(uint64_t psise, uint64_t offset); 117fa9e4066Sahrens extern nvlist_t *vdev_label_read_config(vdev_t *vd); 118fa9e4066Sahrens extern void vdev_uberblock_load(zio_t *zio, vdev_t *vd, struct uberblock *ub); 11939c23413Seschrock 12039c23413Seschrock typedef enum { 12139c23413Seschrock VDEV_LABEL_CREATE, /* create/add a new device */ 12239c23413Seschrock VDEV_LABEL_REPLACE, /* replace an existing device */ 12339c23413Seschrock VDEV_LABEL_SPARE, /* add a new hot spare */ 124fa94a07fSbrendan VDEV_LABEL_REMOVE, /* remove an existing device */ 125fa94a07fSbrendan VDEV_LABEL_L2CACHE /* add an L2ARC cache device */ 12639c23413Seschrock } vdev_labeltype_t; 12739c23413Seschrock 12839c23413Seschrock extern int vdev_label_init(vdev_t *vd, uint64_t txg, vdev_labeltype_t reason); 129fa9e4066Sahrens 130fa9e4066Sahrens #ifdef __cplusplus 131fa9e4066Sahrens } 132fa9e4066Sahrens #endif 133fa9e4066Sahrens 134fa9e4066Sahrens #endif /* _SYS_VDEV_H */ 135