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 /*
  23  * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
  24  * Copyright (c) 2011, 2016 by Delphix. All rights reserved.

  25  */
  26 
  27 #ifndef _SYS_VDEV_H
  28 #define _SYS_VDEV_H
  29 
  30 #include <sys/spa.h>
  31 #include <sys/zio.h>
  32 #include <sys/dmu.h>
  33 #include <sys/space_map.h>
  34 #include <sys/fs/zfs.h>
  35 
  36 #ifdef  __cplusplus
  37 extern "C" {
  38 #endif
  39 
  40 typedef enum vdev_dtl_type {
  41         DTL_MISSING,    /* 0% replication: no copies of the data */
  42         DTL_PARTIAL,    /* less than 100% replication: some copies missing */
  43         DTL_SCRUB,      /* unable to fully repair during scrub/resilver */
  44         DTL_OUTAGE,     /* temporarily missing (used to attempt detach) */
  45         DTL_TYPES
  46 } vdev_dtl_type_t;
  47 







  48 extern boolean_t zfs_nocacheflush;
  49 
  50 extern void vdev_dbgmsg(vdev_t *vd, const char *fmt, ...);
  51 extern void vdev_dbgmsg_print_tree(vdev_t *, int);
  52 extern int vdev_open(vdev_t *);
  53 extern void vdev_open_children(vdev_t *);
  54 extern boolean_t vdev_uses_zvols(vdev_t *);
  55 extern int vdev_validate(vdev_t *);
  56 extern int vdev_copy_path_strict(vdev_t *, vdev_t *);
  57 extern void vdev_copy_path_relaxed(vdev_t *, vdev_t *);
  58 extern void vdev_close(vdev_t *);
  59 extern int vdev_create(vdev_t *, uint64_t txg, boolean_t isreplace);
  60 extern void vdev_reopen(vdev_t *);
  61 extern int vdev_validate_aux(vdev_t *vd);
  62 extern zio_t *vdev_probe(vdev_t *vd, zio_t *pio);
  63 extern boolean_t vdev_is_concrete(vdev_t *vd);
  64 extern boolean_t vdev_is_bootable(vdev_t *vd);
  65 extern vdev_t *vdev_lookup_top(spa_t *spa, uint64_t vdev);
  66 extern vdev_t *vdev_lookup_by_guid(vdev_t *vd, uint64_t guid);
  67 extern int vdev_count_leaves(spa_t *spa);
  68 extern void vdev_dtl_dirty(vdev_t *vd, vdev_dtl_type_t d,
  69     uint64_t txg, uint64_t size);
  70 extern boolean_t vdev_dtl_contains(vdev_t *vd, vdev_dtl_type_t d,
  71     uint64_t txg, uint64_t size);
  72 extern boolean_t vdev_dtl_empty(vdev_t *vd, vdev_dtl_type_t d);
  73 extern void vdev_dtl_reassess(vdev_t *vd, uint64_t txg, uint64_t scrub_txg,
  74     int scrub_done);
  75 extern boolean_t vdev_dtl_required(vdev_t *vd);
  76 extern boolean_t vdev_resilver_needed(vdev_t *vd,
  77     uint64_t *minp, uint64_t *maxp);
  78 extern void vdev_destroy_unlink_zap(vdev_t *vd, uint64_t zapobj,
  79     dmu_tx_t *tx);
  80 extern uint64_t vdev_create_link_zap(vdev_t *vd, dmu_tx_t *tx);
  81 extern void vdev_construct_zaps(vdev_t *vd, dmu_tx_t *tx);
  82 extern void vdev_destroy_spacemaps(vdev_t *vd, dmu_tx_t *tx);
  83 extern void vdev_indirect_mark_obsolete(vdev_t *vd, uint64_t offset,
  84     uint64_t size, uint64_t txg);
  85 extern void spa_vdev_indirect_mark_obsolete(spa_t *spa, uint64_t vdev,
  86     uint64_t offset, uint64_t size, dmu_tx_t *tx);
  87 
  88 extern void vdev_hold(vdev_t *);
  89 extern void vdev_rele(vdev_t *);
  90 
  91 extern int vdev_metaslab_init(vdev_t *vd, uint64_t txg);
  92 extern void vdev_metaslab_fini(vdev_t *vd);
  93 extern void vdev_metaslab_set_size(vdev_t *);
  94 extern void vdev_expand(vdev_t *vd, uint64_t txg);
  95 extern void vdev_split(vdev_t *vd);
  96 extern void vdev_deadman(vdev_t *vd);
  97 

  98 extern void vdev_get_stats(vdev_t *vd, vdev_stat_t *vs);
  99 extern void vdev_clear_stats(vdev_t *vd);
 100 extern void vdev_stat_update(zio_t *zio, uint64_t psize);
 101 extern void vdev_scan_stat_init(vdev_t *vd);
 102 extern void vdev_propagate_state(vdev_t *vd);
 103 extern void vdev_set_state(vdev_t *vd, boolean_t isopen, vdev_state_t state,
 104     vdev_aux_t aux);
 105 extern boolean_t vdev_children_are_offline(vdev_t *vd);
 106 
 107 extern void vdev_space_update(vdev_t *vd,
 108     int64_t alloc_delta, int64_t defer_delta, int64_t space_delta);
 109 
 110 extern uint64_t vdev_psize_to_asize(vdev_t *vd, uint64_t psize);
 111 
 112 extern int vdev_fault(spa_t *spa, uint64_t guid, vdev_aux_t aux);
 113 extern int vdev_degrade(spa_t *spa, uint64_t guid, vdev_aux_t aux);
 114 extern int vdev_online(spa_t *spa, uint64_t guid, uint64_t flags,
 115     vdev_state_t *);
 116 extern int vdev_offline(spa_t *spa, uint64_t guid, uint64_t flags);
 117 extern void vdev_clear(spa_t *spa, vdev_t *vd);
 118 
 119 extern boolean_t vdev_is_dead(vdev_t *vd);
 120 extern boolean_t vdev_readable(vdev_t *vd);
 121 extern boolean_t vdev_writeable(vdev_t *vd);
 122 extern boolean_t vdev_allocatable(vdev_t *vd);
 123 extern boolean_t vdev_accessible(vdev_t *vd, zio_t *zio);
 124 
 125 extern void vdev_cache_init(vdev_t *vd);

 127 extern boolean_t vdev_cache_read(zio_t *zio);
 128 extern void vdev_cache_write(zio_t *zio);
 129 extern void vdev_cache_purge(vdev_t *vd);
 130 
 131 extern void vdev_queue_init(vdev_t *vd);
 132 extern void vdev_queue_fini(vdev_t *vd);
 133 extern zio_t *vdev_queue_io(zio_t *zio);
 134 extern void vdev_queue_io_done(zio_t *zio);
 135 
 136 extern void vdev_config_dirty(vdev_t *vd);
 137 extern void vdev_config_clean(vdev_t *vd);
 138 extern int vdev_config_sync(vdev_t **svd, int svdcount, uint64_t txg);
 139 
 140 extern void vdev_state_dirty(vdev_t *vd);
 141 extern void vdev_state_clean(vdev_t *vd);
 142 
 143 typedef enum vdev_config_flag {
 144         VDEV_CONFIG_SPARE = 1 << 0,
 145         VDEV_CONFIG_L2CACHE = 1 << 1,
 146         VDEV_CONFIG_REMOVING = 1 << 2,
 147         VDEV_CONFIG_MOS = 1 << 3,
 148         VDEV_CONFIG_MISSING = 1 << 4
 149 } vdev_config_flag_t;
 150 
 151 extern void vdev_top_config_generate(spa_t *spa, nvlist_t *config);
 152 extern nvlist_t *vdev_config_generate(spa_t *spa, vdev_t *vd,
 153     boolean_t getstats, vdev_config_flag_t flags);
 154 





 155 /*
 156  * Label routines
 157  */
 158 struct uberblock;
 159 extern uint64_t vdev_label_offset(uint64_t psize, int l, uint64_t offset);
 160 extern int vdev_label_number(uint64_t psise, uint64_t offset);
 161 extern nvlist_t *vdev_label_read_config(vdev_t *vd, uint64_t txg);
 162 extern void vdev_uberblock_load(vdev_t *, struct uberblock *, nvlist_t **);
 163 
 164 typedef enum {
 165         VDEV_LABEL_CREATE,      /* create/add a new device */
 166         VDEV_LABEL_REPLACE,     /* replace an existing device */
 167         VDEV_LABEL_SPARE,       /* add a new hot spare */
 168         VDEV_LABEL_REMOVE,      /* remove an existing device */
 169         VDEV_LABEL_L2CACHE,     /* add an L2ARC cache device */
 170         VDEV_LABEL_SPLIT        /* generating new label for split-off dev */
 171 } vdev_labeltype_t;
 172 
 173 extern int vdev_label_init(vdev_t *vd, uint64_t txg, vdev_labeltype_t reason);
 174 


 175 #ifdef  __cplusplus
 176 }
 177 #endif
 178 
 179 #endif  /* _SYS_VDEV_H */

   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 /*
  23  * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
  24  * Copyright (c) 2013 by Delphix. All rights reserved.
  25  * Copyright 2015 Nexenta Systems, Inc. All rights reserved.
  26  */
  27 
  28 #ifndef _SYS_VDEV_H
  29 #define _SYS_VDEV_H
  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 typedef enum vdev_dtl_type {
  42         DTL_MISSING,    /* 0% replication: no copies of the data */
  43         DTL_PARTIAL,    /* less than 100% replication: some copies missing */
  44         DTL_SCRUB,      /* unable to fully repair during scrub/resilver */
  45         DTL_OUTAGE,     /* temporarily missing (used to attempt detach) */
  46         DTL_TYPES
  47 } vdev_dtl_type_t;
  48 
  49 typedef struct vdev_trim_info {
  50         vdev_t *vti_vdev;
  51         uint64_t vti_txg;       /* ignored for manual trim */
  52         void (*vti_done_cb)(void *);
  53         void *vti_done_arg;
  54 } vdev_trim_info_t;
  55 
  56 extern boolean_t zfs_nocacheflush;
  57 


  58 extern int vdev_open(vdev_t *);
  59 extern void vdev_open_children(vdev_t *);
  60 extern boolean_t vdev_uses_zvols(vdev_t *);
  61 extern int vdev_validate(vdev_t *, boolean_t);


  62 extern void vdev_close(vdev_t *);
  63 extern int vdev_create(vdev_t *, uint64_t txg, boolean_t isreplace);
  64 extern void vdev_reopen(vdev_t *);
  65 extern int vdev_validate_aux(vdev_t *vd);
  66 extern zio_t *vdev_probe(vdev_t *vd, zio_t *pio);
  67 
  68 extern boolean_t vdev_is_bootable(vdev_t *vd);
  69 extern vdev_t *vdev_lookup_top(spa_t *spa, uint64_t vdev);
  70 extern vdev_t *vdev_lookup_by_guid(vdev_t *vd, uint64_t guid);
  71 extern int vdev_count_leaves(spa_t *spa);
  72 extern void vdev_dtl_dirty(vdev_t *vd, vdev_dtl_type_t d,
  73     uint64_t txg, uint64_t size);
  74 extern boolean_t vdev_dtl_contains(vdev_t *vd, vdev_dtl_type_t d,
  75     uint64_t txg, uint64_t size);
  76 extern boolean_t vdev_dtl_empty(vdev_t *vd, vdev_dtl_type_t d);
  77 extern void vdev_dtl_reassess(vdev_t *vd, uint64_t txg, uint64_t scrub_txg,
  78     int scrub_done);
  79 extern boolean_t vdev_dtl_required(vdev_t *vd);
  80 extern boolean_t vdev_resilver_needed(vdev_t *vd,
  81     uint64_t *minp, uint64_t *maxp);
  82 extern void vdev_destroy_unlink_zap(vdev_t *vd, uint64_t zapobj,
  83     dmu_tx_t *tx);
  84 extern uint64_t vdev_create_link_zap(vdev_t *vd, dmu_tx_t *tx);
  85 extern void vdev_construct_zaps(vdev_t *vd, dmu_tx_t *tx);





  86 
  87 extern void vdev_hold(vdev_t *);
  88 extern void vdev_rele(vdev_t *);
  89 
  90 extern int vdev_metaslab_init(vdev_t *vd, uint64_t txg);
  91 extern void vdev_metaslab_fini(vdev_t *vd);
  92 extern void vdev_metaslab_set_size(vdev_t *);
  93 extern void vdev_expand(vdev_t *vd, uint64_t txg);
  94 extern void vdev_split(vdev_t *vd);
  95 extern void vdev_deadman(vdev_t *vd);
  96 
  97 
  98 extern void vdev_get_stats(vdev_t *vd, vdev_stat_t *vs);
  99 extern void vdev_clear_stats(vdev_t *vd);
 100 extern void vdev_stat_update(zio_t *zio, uint64_t psize);
 101 extern void vdev_scan_stat_init(vdev_t *vd);
 102 extern void vdev_propagate_state(vdev_t *vd);
 103 extern void vdev_set_state(vdev_t *vd, boolean_t isopen, vdev_state_t state,
 104     vdev_aux_t aux);

 105 
 106 extern void vdev_space_update(vdev_t *vd,
 107     int64_t alloc_delta, int64_t defer_delta, int64_t space_delta);
 108 
 109 extern uint64_t vdev_psize_to_asize(vdev_t *vd, uint64_t psize);
 110 
 111 extern int vdev_fault(spa_t *spa, uint64_t guid, vdev_aux_t aux);
 112 extern int vdev_degrade(spa_t *spa, uint64_t guid, vdev_aux_t aux);
 113 extern int vdev_online(spa_t *spa, uint64_t guid, uint64_t flags,
 114     vdev_state_t *);
 115 extern int vdev_offline(spa_t *spa, uint64_t guid, uint64_t flags);
 116 extern void vdev_clear(spa_t *spa, vdev_t *vd);
 117 
 118 extern boolean_t vdev_is_dead(vdev_t *vd);
 119 extern boolean_t vdev_readable(vdev_t *vd);
 120 extern boolean_t vdev_writeable(vdev_t *vd);
 121 extern boolean_t vdev_allocatable(vdev_t *vd);
 122 extern boolean_t vdev_accessible(vdev_t *vd, zio_t *zio);
 123 
 124 extern void vdev_cache_init(vdev_t *vd);

 126 extern boolean_t vdev_cache_read(zio_t *zio);
 127 extern void vdev_cache_write(zio_t *zio);
 128 extern void vdev_cache_purge(vdev_t *vd);
 129 
 130 extern void vdev_queue_init(vdev_t *vd);
 131 extern void vdev_queue_fini(vdev_t *vd);
 132 extern zio_t *vdev_queue_io(zio_t *zio);
 133 extern void vdev_queue_io_done(zio_t *zio);
 134 
 135 extern void vdev_config_dirty(vdev_t *vd);
 136 extern void vdev_config_clean(vdev_t *vd);
 137 extern int vdev_config_sync(vdev_t **svd, int svdcount, uint64_t txg);
 138 
 139 extern void vdev_state_dirty(vdev_t *vd);
 140 extern void vdev_state_clean(vdev_t *vd);
 141 
 142 typedef enum vdev_config_flag {
 143         VDEV_CONFIG_SPARE = 1 << 0,
 144         VDEV_CONFIG_L2CACHE = 1 << 1,
 145         VDEV_CONFIG_REMOVING = 1 << 2,
 146         VDEV_CONFIG_MOS = 1 << 3

 147 } vdev_config_flag_t;
 148 
 149 extern void vdev_top_config_generate(spa_t *spa, nvlist_t *config);
 150 extern nvlist_t *vdev_config_generate(spa_t *spa, vdev_t *vd,
 151     boolean_t getstats, vdev_config_flag_t flags);
 152 
 153 extern boolean_t vdev_type_is_ddt(vdev_t *vd);
 154 
 155 extern void vdev_man_trim(vdev_trim_info_t *vti);
 156 extern void vdev_auto_trim(vdev_trim_info_t *vti);
 157 
 158 /*
 159  * Label routines
 160  */
 161 struct uberblock;
 162 extern uint64_t vdev_label_offset(uint64_t psize, int l, uint64_t offset);
 163 extern int vdev_label_number(uint64_t psise, uint64_t offset);
 164 extern nvlist_t *vdev_label_read_config(vdev_t *vd, uint64_t txg);
 165 extern void vdev_uberblock_load(vdev_t *, struct uberblock *, nvlist_t **);
 166 
 167 typedef enum {
 168         VDEV_LABEL_CREATE,      /* create/add a new device */
 169         VDEV_LABEL_REPLACE,     /* replace an existing device */
 170         VDEV_LABEL_SPARE,       /* add a new hot spare */
 171         VDEV_LABEL_REMOVE,      /* remove an existing device */
 172         VDEV_LABEL_L2CACHE,     /* add an L2ARC cache device */
 173         VDEV_LABEL_SPLIT        /* generating new label for split-off dev */
 174 } vdev_labeltype_t;
 175 
 176 extern int vdev_label_init(vdev_t *vd, uint64_t txg, vdev_labeltype_t reason);
 177 
 178 extern boolean_t vdev_is_special(vdev_t *vd);
 179 
 180 #ifdef  __cplusplus
 181 }
 182 #endif
 183 
 184 #endif  /* _SYS_VDEV_H */