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 /* 2239c23413Seschrock * Copyright 2007 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 #pragma ident "%Z%%M% %I% %E% SMI" 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 41416e0cd8Sek extern boolean_t zfs_nocacheflush; 42416e0cd8Sek 43fa9e4066Sahrens /* 44fa9e4066Sahrens * Fault injection modes. 45fa9e4066Sahrens */ 46fa9e4066Sahrens #define VDEV_FAULT_NONE 0 47fa9e4066Sahrens #define VDEV_FAULT_RANDOM 1 48fa9e4066Sahrens #define VDEV_FAULT_COUNT 2 49fa9e4066Sahrens 50fa9e4066Sahrens extern int vdev_open(vdev_t *); 51560e6e96Seschrock extern int vdev_validate(vdev_t *); 52fa9e4066Sahrens extern void vdev_close(vdev_t *); 5399653d4eSeschrock extern int vdev_create(vdev_t *, uint64_t txg, boolean_t isreplace); 540e34b6a7Sbonwick extern void vdev_init(vdev_t *, uint64_t txg); 55ea8dc4b6Seschrock extern void vdev_reopen(vdev_t *); 56*fa94a07fSbrendan extern int vdev_validate_aux(vdev_t *vd); 570a4e9518Sgw extern int vdev_probe(vdev_t *); 58fa9e4066Sahrens 59fa9e4066Sahrens extern vdev_t *vdev_lookup_top(spa_t *spa, uint64_t vdev); 60fa9e4066Sahrens extern vdev_t *vdev_lookup_by_guid(vdev_t *vd, uint64_t guid); 61fa9e4066Sahrens extern void vdev_dtl_dirty(space_map_t *sm, uint64_t txg, uint64_t size); 62fa9e4066Sahrens extern int vdev_dtl_contains(space_map_t *sm, uint64_t txg, uint64_t size); 63fa9e4066Sahrens extern void vdev_dtl_reassess(vdev_t *vd, uint64_t txg, uint64_t scrub_txg, 64fa9e4066Sahrens int scrub_done); 65fa9e4066Sahrens 66fa9e4066Sahrens extern const char *vdev_description(vdev_t *vd); 67fa9e4066Sahrens 68ea8dc4b6Seschrock extern int vdev_metaslab_init(vdev_t *vd, uint64_t txg); 69fa9e4066Sahrens extern void vdev_metaslab_fini(vdev_t *vd); 70fa9e4066Sahrens 71fa9e4066Sahrens extern void vdev_get_stats(vdev_t *vd, vdev_stat_t *vs); 72*fa94a07fSbrendan extern void vdev_clear_stats(vdev_t *vd); 73fa9e4066Sahrens extern void vdev_stat_update(zio_t *zio); 74fa9e4066Sahrens extern void vdev_scrub_stat_update(vdev_t *vd, pool_scrub_type_t type, 75fa9e4066Sahrens boolean_t complete); 76fa9e4066Sahrens extern int vdev_getspec(spa_t *spa, uint64_t vdev, char **vdev_spec); 7744cd46caSbillm extern void vdev_propagate_state(vdev_t *vd); 78ea8dc4b6Seschrock extern void vdev_set_state(vdev_t *vd, boolean_t isopen, vdev_state_t state, 79ea8dc4b6Seschrock vdev_aux_t aux); 80fa9e4066Sahrens 8199653d4eSeschrock extern void vdev_space_update(vdev_t *vd, int64_t space_delta, 82*fa94a07fSbrendan int64_t alloc_delta, boolean_t update_root); 83fa9e4066Sahrens 84fa9e4066Sahrens extern uint64_t vdev_psize_to_asize(vdev_t *vd, uint64_t psize); 85fa9e4066Sahrens 86fa9e4066Sahrens extern void vdev_io_start(zio_t *zio); 87fa9e4066Sahrens extern void vdev_io_done(zio_t *zio); 88fa9e4066Sahrens 893d7072f8Seschrock extern int vdev_fault(spa_t *spa, uint64_t guid); 903d7072f8Seschrock extern int vdev_degrade(spa_t *spa, uint64_t guid); 913d7072f8Seschrock extern int vdev_online(spa_t *spa, uint64_t guid, uint64_t flags, 923d7072f8Seschrock vdev_state_t *); 933d7072f8Seschrock extern int vdev_offline(spa_t *spa, uint64_t guid, uint64_t flags); 940a4e9518Sgw extern void vdev_clear(spa_t *spa, vdev_t *vd, boolean_t reopen_wanted); 95fa9e4066Sahrens 96fa9e4066Sahrens extern int vdev_error_inject(vdev_t *vd, zio_t *zio); 97fa9e4066Sahrens extern int vdev_is_dead(vdev_t *vd); 980a4e9518Sgw extern int vdev_readable(vdev_t *vd); 990a4e9518Sgw extern int vdev_writeable(vdev_t *vd); 100fa9e4066Sahrens 101fa9e4066Sahrens extern void vdev_cache_init(vdev_t *vd); 102fa9e4066Sahrens extern void vdev_cache_fini(vdev_t *vd); 103fa9e4066Sahrens extern int vdev_cache_read(zio_t *zio); 104fa9e4066Sahrens extern void vdev_cache_write(zio_t *zio); 1053d7072f8Seschrock extern void vdev_cache_purge(vdev_t *vd); 106fa9e4066Sahrens 107fa9e4066Sahrens extern void vdev_queue_init(vdev_t *vd); 108fa9e4066Sahrens extern void vdev_queue_fini(vdev_t *vd); 109fa9e4066Sahrens extern zio_t *vdev_queue_io(zio_t *zio); 110fa9e4066Sahrens extern void vdev_queue_io_done(zio_t *zio); 111fa9e4066Sahrens 112fa9e4066Sahrens extern void vdev_config_dirty(vdev_t *vd); 113fa9e4066Sahrens extern void vdev_config_clean(vdev_t *vd); 1140373e76bSbonwick extern int vdev_config_sync(vdev_t *vd, uint64_t txg); 115fa9e4066Sahrens 11699653d4eSeschrock extern nvlist_t *vdev_config_generate(spa_t *spa, vdev_t *vd, 117*fa94a07fSbrendan boolean_t getstats, boolean_t isspare, boolean_t isl2cache); 118fa9e4066Sahrens 119fa9e4066Sahrens /* 120fa9e4066Sahrens * Label routines 121fa9e4066Sahrens */ 122fa9e4066Sahrens struct uberblock; 123fa9e4066Sahrens extern uint64_t vdev_label_offset(uint64_t psize, int l, uint64_t offset); 124fa9e4066Sahrens extern nvlist_t *vdev_label_read_config(vdev_t *vd); 125fa9e4066Sahrens extern void vdev_uberblock_load(zio_t *zio, vdev_t *vd, struct uberblock *ub); 12639c23413Seschrock 12739c23413Seschrock typedef enum { 12839c23413Seschrock VDEV_LABEL_CREATE, /* create/add a new device */ 12939c23413Seschrock VDEV_LABEL_REPLACE, /* replace an existing device */ 13039c23413Seschrock VDEV_LABEL_SPARE, /* add a new hot spare */ 131*fa94a07fSbrendan VDEV_LABEL_REMOVE, /* remove an existing device */ 132*fa94a07fSbrendan VDEV_LABEL_L2CACHE /* add an L2ARC cache device */ 13339c23413Seschrock } vdev_labeltype_t; 13439c23413Seschrock 13539c23413Seschrock extern int vdev_label_init(vdev_t *vd, uint64_t txg, vdev_labeltype_t reason); 136fa9e4066Sahrens 137fa9e4066Sahrens #ifdef __cplusplus 138fa9e4066Sahrens } 139fa9e4066Sahrens #endif 140fa9e4066Sahrens 141fa9e4066Sahrens #endif /* _SYS_VDEV_H */ 142