projects / mirror_zfs.git / blame
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|---|---|---|
| 34dc7c2f BB |
1 | /* |
| 2 | * CDDL HEADER START | |
| 3 | * | |
| 4 | * The contents of this file are subject to the terms of the | |
| 5 | * Common Development and Distribution License (the "License"). | |
| 6 | * You may not use this file except in compliance with the License. | |
| 7 | * | |
| 8 | * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE | |
| 9 | * or http://www.opensolaris.org/os/licensing. | |
| 10 | * See the License for the specific language governing permissions | |
| 11 | * and limitations under the License. | |
| 12 | * | |
| 13 | * When distributing Covered Code, include this CDDL HEADER in each | |
| 14 | * file and include the License file at usr/src/OPENSOLARIS.LICENSE. | |
| 15 | * If applicable, add the following below this CDDL HEADER, with the | |
| 16 | * fields enclosed by brackets "[]" replaced with your own identifying | |
| 17 | * information: Portions Copyright [yyyy] [name of copyright owner] | |
| 18 | * | |
| 19 | * CDDL HEADER END | |
| 20 | */ | |
| 21 | /* | |
| 22 | * Copyright 2007 Sun Microsystems, Inc. All rights reserved. | |
| 23 | * Use is subject to license terms. | |
| 24 | */ | |
| 25 | ||
| 26 | #ifndef _SYS_VDEV_H | |
| 27 | #define _SYS_VDEV_H | |
| 28 | ||
| 29 | #pragma ident "@(#)vdev.h 1.16 07/12/12 SMI" | |
| 30 | ||
| 31 | #include <sys/spa.h> | |
| 32 | #include <sys/zio.h> | |
| 33 | #include <sys/dmu.h> | |
| 34 | #include <sys/space_map.h> | |
| 35 | #include <sys/fs/zfs.h> | |
| 36 | ||
| 37 | #ifdef __cplusplus | |
| 38 | extern "C" { | |
| 39 | #endif | |
| 40 | ||
| 41 | extern boolean_t zfs_nocacheflush; | |
| 42 | ||
| 43 | /* | |
| 44 | * Fault injection modes. | |
| 45 | */ | |
| 46 | #define VDEV_FAULT_NONE 0 | |
| 47 | #define VDEV_FAULT_RANDOM 1 | |
| 48 | #define VDEV_FAULT_COUNT 2 | |
| 49 | ||
| 50 | extern int vdev_open(vdev_t *); | |
| 51 | extern int vdev_validate(vdev_t *); | |
| 52 | extern void vdev_close(vdev_t *); | |
| 53 | extern int vdev_create(vdev_t *, uint64_t txg, boolean_t isreplace); | |
| 54 | extern void vdev_init(vdev_t *, uint64_t txg); | |
| 55 | extern void vdev_reopen(vdev_t *); | |
| 56 | extern int vdev_validate_aux(vdev_t *vd); | |
| 57 | extern int vdev_probe(vdev_t *); | |
| 58 | ||
| 59 | extern vdev_t *vdev_lookup_top(spa_t *spa, uint64_t vdev); | |
| 60 | extern vdev_t *vdev_lookup_by_guid(vdev_t *vd, uint64_t guid); | |
| 61 | extern void vdev_dtl_dirty(space_map_t *sm, uint64_t txg, uint64_t size); | |
| 62 | extern int vdev_dtl_contains(space_map_t *sm, uint64_t txg, uint64_t size); | |
| 63 | extern void vdev_dtl_reassess(vdev_t *vd, uint64_t txg, uint64_t scrub_txg, | |
| 64 | int scrub_done); | |
| 65 | ||
| 66 | extern const char *vdev_description(vdev_t *vd); | |
| 67 | ||
| 68 | extern int vdev_metaslab_init(vdev_t *vd, uint64_t txg); | |
| 69 | extern void vdev_metaslab_fini(vdev_t *vd); | |
| 70 | ||
| 71 | extern void vdev_get_stats(vdev_t *vd, vdev_stat_t *vs); | |
| 72 | extern void vdev_clear_stats(vdev_t *vd); | |
| 73 | extern void vdev_stat_update(zio_t *zio); | |
| 74 | extern void vdev_scrub_stat_update(vdev_t *vd, pool_scrub_type_t type, | |
| 75 | boolean_t complete); | |
| 76 | extern int vdev_getspec(spa_t *spa, uint64_t vdev, char **vdev_spec); | |
| 77 | extern void vdev_propagate_state(vdev_t *vd); | |
| 78 | extern void vdev_set_state(vdev_t *vd, boolean_t isopen, vdev_state_t state, | |
| 79 | vdev_aux_t aux); | |
| 80 | ||
| 81 | extern void vdev_space_update(vdev_t *vd, int64_t space_delta, | |
| 82 | int64_t alloc_delta, boolean_t update_root); | |
| 83 | ||
| 84 | extern uint64_t vdev_psize_to_asize(vdev_t *vd, uint64_t psize); | |
| 85 | ||
| 86 | extern int vdev_fault(spa_t *spa, uint64_t guid); | |
| 87 | extern int vdev_degrade(spa_t *spa, uint64_t guid); | |
| 88 | extern int vdev_online(spa_t *spa, uint64_t guid, uint64_t flags, | |
| 89 | vdev_state_t *); | |
| 90 | extern int vdev_offline(spa_t *spa, uint64_t guid, uint64_t flags); | |
| 91 | extern void vdev_clear(spa_t *spa, vdev_t *vd, boolean_t reopen_wanted); | |
| 92 | ||
| 93 | extern int vdev_error_inject(vdev_t *vd, zio_t *zio); | |
| 94 | extern int vdev_is_dead(vdev_t *vd); | |
| 95 | extern int vdev_readable(vdev_t *vd); | |
| 96 | extern int vdev_writeable(vdev_t *vd); | |
| 97 | ||
| 98 | extern void vdev_cache_init(vdev_t *vd); | |
| 99 | extern void vdev_cache_fini(vdev_t *vd); | |
| 100 | extern int vdev_cache_read(zio_t *zio); | |
| 101 | extern void vdev_cache_write(zio_t *zio); | |
| 102 | extern void vdev_cache_purge(vdev_t *vd); | |
| 103 | ||
| 104 | extern void vdev_queue_init(vdev_t *vd); | |
| 105 | extern void vdev_queue_fini(vdev_t *vd); | |
| 106 | extern zio_t *vdev_queue_io(zio_t *zio); | |
| 107 | extern void vdev_queue_io_done(zio_t *zio); | |
| 108 | ||
| 109 | extern void vdev_config_dirty(vdev_t *vd); | |
| 110 | extern void vdev_config_clean(vdev_t *vd); | |
| 111 | extern int vdev_config_sync(vdev_t **svd, int svdcount, uint64_t txg); | |
| 112 | ||
| 113 | extern nvlist_t *vdev_config_generate(spa_t *spa, vdev_t *vd, | |
| 114 | boolean_t getstats, boolean_t isspare, boolean_t isl2cache); | |
| 115 | ||
| 116 | /* | |
| 117 | * Label routines | |
| 118 | */ | |
| 119 | struct uberblock; | |
| 120 | extern uint64_t vdev_label_offset(uint64_t psize, int l, uint64_t offset); | |
| 121 | extern nvlist_t *vdev_label_read_config(vdev_t *vd); | |
| 122 | extern void vdev_uberblock_load(zio_t *zio, vdev_t *vd, struct uberblock *ub); | |
| 123 | ||
| 124 | typedef enum { | |
| 125 | VDEV_LABEL_CREATE, /* create/add a new device */ | |
| 126 | VDEV_LABEL_REPLACE, /* replace an existing device */ | |
| 127 | VDEV_LABEL_SPARE, /* add a new hot spare */ | |
| 128 | VDEV_LABEL_REMOVE, /* remove an existing device */ | |
| 129 | VDEV_LABEL_L2CACHE /* add an L2ARC cache device */ | |
| 130 | } vdev_labeltype_t; | |
| 131 | ||
| 132 | extern int vdev_label_init(vdev_t *vd, uint64_t txg, vdev_labeltype_t reason); | |
| 133 | ||
| 134 | #ifdef __cplusplus | |
| 135 | } | |
| 136 | #endif | |
| 137 | ||
| 138 | #endif /* _SYS_VDEV_H */ |