127 */
128 uint64_t vdev_id; /* child number in vdev parent */
129 uint64_t vdev_guid; /* unique ID for this vdev */
130 uint64_t vdev_guid_sum; /* self guid + all child guids */
131 uint64_t vdev_orig_guid; /* orig. guid prior to remove */
132 uint64_t vdev_asize; /* allocatable device capacity */
133 uint64_t vdev_min_asize; /* min acceptable asize */
134 uint64_t vdev_max_asize; /* max acceptable asize */
135 uint64_t vdev_ashift; /* block alignment shift */
136 uint64_t vdev_state; /* see VDEV_STATE_* #defines */
137 uint64_t vdev_prevstate; /* used when reopening a vdev */
138 vdev_ops_t *vdev_ops; /* vdev operations */
139 spa_t *vdev_spa; /* spa for this vdev */
140 void *vdev_tsd; /* type-specific data */
141 vnode_t *vdev_name_vp; /* vnode for pathname */
142 vnode_t *vdev_devid_vp; /* vnode for devid */
143 vdev_t *vdev_top; /* top-level vdev */
144 vdev_t *vdev_parent; /* parent vdev */
145 vdev_t **vdev_child; /* array of children */
146 uint64_t vdev_children; /* number of children */
147 space_map_t vdev_dtl[DTL_TYPES]; /* in-core dirty time logs */
148 vdev_stat_t vdev_stat; /* virtual device statistics */
149 boolean_t vdev_expanding; /* expand the vdev? */
150 boolean_t vdev_reopening; /* reopen in progress? */
151 int vdev_open_error; /* error on last open */
152 kthread_t *vdev_open_thread; /* thread opening children */
153 uint64_t vdev_crtxg; /* txg when top-level was added */
154
155 /*
156 * Top-level vdev state.
157 */
158 uint64_t vdev_ms_array; /* metaslab array object */
159 uint64_t vdev_ms_shift; /* metaslab size shift */
160 uint64_t vdev_ms_count; /* number of metaslabs */
161 metaslab_group_t *vdev_mg; /* metaslab group */
162 metaslab_t **vdev_ms; /* metaslab array */
163 txg_list_t vdev_ms_list; /* per-txg dirty metaslab lists */
164 txg_list_t vdev_dtl_list; /* per-txg dirty DTL lists */
165 txg_node_t vdev_txg_node; /* per-txg dirty vdev linkage */
166 boolean_t vdev_remove_wanted; /* async remove wanted? */
167 boolean_t vdev_probe_wanted; /* async probe wanted? */
168 uint64_t vdev_removing; /* device is being removed? */
169 list_node_t vdev_config_dirty_node; /* config dirty list */
170 list_node_t vdev_state_dirty_node; /* state dirty list */
171 uint64_t vdev_deflate_ratio; /* deflation ratio (x512) */
172 uint64_t vdev_islog; /* is an intent log device */
173 uint64_t vdev_ishole; /* is a hole in the namespace */
174
175 /*
176 * Leaf vdev state.
177 */
178 uint64_t vdev_psize; /* physical device capacity */
179 space_map_obj_t vdev_dtl_smo; /* dirty time log space map obj */
180 txg_node_t vdev_dtl_node; /* per-txg dirty DTL linkage */
181 uint64_t vdev_wholedisk; /* true if this is a whole disk */
182 uint64_t vdev_offline; /* persistent offline state */
183 uint64_t vdev_faulted; /* persistent faulted state */
184 uint64_t vdev_degraded; /* persistent degraded state */
185 uint64_t vdev_removed; /* persistent removed state */
186 uint64_t vdev_resilver_txg; /* persistent resilvering state */
187 uint64_t vdev_nparity; /* number of parity devices for raidz */
188 char *vdev_path; /* vdev path (if any) */
189 char *vdev_devid; /* vdev devid (if any) */
190 char *vdev_physpath; /* vdev device path (if any) */
191 char *vdev_fru; /* physical FRU location */
192 uint64_t vdev_not_present; /* not present during import */
193 uint64_t vdev_unspare; /* unspare when resilvering done */
194 hrtime_t vdev_last_try; /* last reopen time */
195 boolean_t vdev_nowritecache; /* true if flushwritecache failed */
196 boolean_t vdev_checkremove; /* temporary online test */
197 boolean_t vdev_forcefault; /* force online fault */
198 boolean_t vdev_splitting; /* split or repair in progress */
199 boolean_t vdev_delayed_close; /* delayed device close? */
200 uint8_t vdev_tmpoffline; /* device taken offline temporarily? */
201 uint8_t vdev_detached; /* device detached? */
202 uint8_t vdev_cant_read; /* vdev is failing all reads */
203 uint8_t vdev_cant_write; /* vdev is failing all writes */
204 uint64_t vdev_isspare; /* was a hot spare */
205 uint64_t vdev_isl2cache; /* was a l2cache device */
206 vdev_queue_t vdev_queue; /* I/O deadline schedule queue */
207 vdev_cache_t vdev_cache; /* physical block cache */
208 spa_aux_vdev_t *vdev_aux; /* for l2cache vdevs */
209 zio_t *vdev_probe_zio; /* root of current probe */
210 vdev_aux_t vdev_label_aux; /* on-disk aux state */
211
212 /*
213 * For DTrace to work in userland (libzpool) context, these fields must
214 * remain at the end of the structure. DTrace will use the kernel's
215 * CTF definition for 'struct vdev', and since the size of a kmutex_t is
216 * larger in userland, the offsets for the rest of the fields would be
217 * incorrect.
218 */
219 kmutex_t vdev_dtl_lock; /* vdev_dtl_{map,resilver} */
220 kmutex_t vdev_stat_lock; /* vdev_stat */
221 kmutex_t vdev_probe_lock; /* protects vdev_probe_zio */
222 };
223
224 #define VDEV_RAIDZ_MAXPARITY 3
225
286 vdev_ops_t *ops);
287 extern int vdev_alloc(spa_t *spa, vdev_t **vdp, nvlist_t *config,
288 vdev_t *parent, uint_t id, int alloctype);
289 extern void vdev_free(vdev_t *vd);
290
291 /*
292 * Add or remove children and parents
293 */
294 extern void vdev_add_child(vdev_t *pvd, vdev_t *cvd);
295 extern void vdev_remove_child(vdev_t *pvd, vdev_t *cvd);
296 extern void vdev_compact_children(vdev_t *pvd);
297 extern vdev_t *vdev_add_parent(vdev_t *cvd, vdev_ops_t *ops);
298 extern void vdev_remove_parent(vdev_t *cvd);
299
300 /*
301 * vdev sync load and sync
302 */
303 extern void vdev_load_log_state(vdev_t *nvd, vdev_t *ovd);
304 extern boolean_t vdev_log_state_valid(vdev_t *vd);
305 extern void vdev_load(vdev_t *vd);
306 extern void vdev_sync(vdev_t *vd, uint64_t txg);
307 extern void vdev_sync_done(vdev_t *vd, uint64_t txg);
308 extern void vdev_dirty(vdev_t *vd, int flags, void *arg, uint64_t txg);
309
310 /*
311 * Available vdev types.
312 */
313 extern vdev_ops_t vdev_root_ops;
314 extern vdev_ops_t vdev_mirror_ops;
315 extern vdev_ops_t vdev_replacing_ops;
316 extern vdev_ops_t vdev_raidz_ops;
317 extern vdev_ops_t vdev_disk_ops;
318 extern vdev_ops_t vdev_file_ops;
319 extern vdev_ops_t vdev_missing_ops;
320 extern vdev_ops_t vdev_hole_ops;
321 extern vdev_ops_t vdev_spare_ops;
322
323 /*
324 * Common size functions
325 */
326 extern uint64_t vdev_default_asize(vdev_t *vd, uint64_t psize);
327 extern uint64_t vdev_get_min_asize(vdev_t *vd);
328 extern void vdev_set_min_asize(vdev_t *vd);
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127 */
128 uint64_t vdev_id; /* child number in vdev parent */
129 uint64_t vdev_guid; /* unique ID for this vdev */
130 uint64_t vdev_guid_sum; /* self guid + all child guids */
131 uint64_t vdev_orig_guid; /* orig. guid prior to remove */
132 uint64_t vdev_asize; /* allocatable device capacity */
133 uint64_t vdev_min_asize; /* min acceptable asize */
134 uint64_t vdev_max_asize; /* max acceptable asize */
135 uint64_t vdev_ashift; /* block alignment shift */
136 uint64_t vdev_state; /* see VDEV_STATE_* #defines */
137 uint64_t vdev_prevstate; /* used when reopening a vdev */
138 vdev_ops_t *vdev_ops; /* vdev operations */
139 spa_t *vdev_spa; /* spa for this vdev */
140 void *vdev_tsd; /* type-specific data */
141 vnode_t *vdev_name_vp; /* vnode for pathname */
142 vnode_t *vdev_devid_vp; /* vnode for devid */
143 vdev_t *vdev_top; /* top-level vdev */
144 vdev_t *vdev_parent; /* parent vdev */
145 vdev_t **vdev_child; /* array of children */
146 uint64_t vdev_children; /* number of children */
147 vdev_stat_t vdev_stat; /* virtual device statistics */
148 boolean_t vdev_expanding; /* expand the vdev? */
149 boolean_t vdev_reopening; /* reopen in progress? */
150 int vdev_open_error; /* error on last open */
151 kthread_t *vdev_open_thread; /* thread opening children */
152 uint64_t vdev_crtxg; /* txg when top-level was added */
153
154 /*
155 * Top-level vdev state.
156 */
157 uint64_t vdev_ms_array; /* metaslab array object */
158 uint64_t vdev_ms_shift; /* metaslab size shift */
159 uint64_t vdev_ms_count; /* number of metaslabs */
160 metaslab_group_t *vdev_mg; /* metaslab group */
161 metaslab_t **vdev_ms; /* metaslab array */
162 txg_list_t vdev_ms_list; /* per-txg dirty metaslab lists */
163 txg_list_t vdev_dtl_list; /* per-txg dirty DTL lists */
164 txg_node_t vdev_txg_node; /* per-txg dirty vdev linkage */
165 boolean_t vdev_remove_wanted; /* async remove wanted? */
166 boolean_t vdev_probe_wanted; /* async probe wanted? */
167 list_node_t vdev_config_dirty_node; /* config dirty list */
168 list_node_t vdev_state_dirty_node; /* state dirty list */
169 uint64_t vdev_deflate_ratio; /* deflation ratio (x512) */
170 uint64_t vdev_islog; /* is an intent log device */
171 uint64_t vdev_removing; /* device is being removed? */
172 boolean_t vdev_ishole; /* is a hole in the namespace */
173
174 /*
175 * Leaf vdev state.
176 */
177 range_tree_t *vdev_dtl[DTL_TYPES]; /* dirty time logs */
178 space_map_t *vdev_dtl_sm; /* dirty time log space map */
179 txg_node_t vdev_dtl_node; /* per-txg dirty DTL linkage */
180 uint64_t vdev_dtl_object; /* DTL object */
181 uint64_t vdev_psize; /* physical device capacity */
182 uint64_t vdev_wholedisk; /* true if this is a whole disk */
183 uint64_t vdev_offline; /* persistent offline state */
184 uint64_t vdev_faulted; /* persistent faulted state */
185 uint64_t vdev_degraded; /* persistent degraded state */
186 uint64_t vdev_removed; /* persistent removed state */
187 uint64_t vdev_resilver_txg; /* persistent resilvering state */
188 uint64_t vdev_nparity; /* number of parity devices for raidz */
189 char *vdev_path; /* vdev path (if any) */
190 char *vdev_devid; /* vdev devid (if any) */
191 char *vdev_physpath; /* vdev device path (if any) */
192 char *vdev_fru; /* physical FRU location */
193 uint64_t vdev_not_present; /* not present during import */
194 uint64_t vdev_unspare; /* unspare when resilvering done */
195 boolean_t vdev_nowritecache; /* true if flushwritecache failed */
196 boolean_t vdev_checkremove; /* temporary online test */
197 boolean_t vdev_forcefault; /* force online fault */
198 boolean_t vdev_splitting; /* split or repair in progress */
199 boolean_t vdev_delayed_close; /* delayed device close? */
200 boolean_t vdev_tmpoffline; /* device taken offline temporarily? */
201 boolean_t vdev_detached; /* device detached? */
202 boolean_t vdev_cant_read; /* vdev is failing all reads */
203 boolean_t vdev_cant_write; /* vdev is failing all writes */
204 boolean_t vdev_isspare; /* was a hot spare */
205 boolean_t vdev_isl2cache; /* was a l2cache device */
206 vdev_queue_t vdev_queue; /* I/O deadline schedule queue */
207 vdev_cache_t vdev_cache; /* physical block cache */
208 spa_aux_vdev_t *vdev_aux; /* for l2cache vdevs */
209 zio_t *vdev_probe_zio; /* root of current probe */
210 vdev_aux_t vdev_label_aux; /* on-disk aux state */
211
212 /*
213 * For DTrace to work in userland (libzpool) context, these fields must
214 * remain at the end of the structure. DTrace will use the kernel's
215 * CTF definition for 'struct vdev', and since the size of a kmutex_t is
216 * larger in userland, the offsets for the rest of the fields would be
217 * incorrect.
218 */
219 kmutex_t vdev_dtl_lock; /* vdev_dtl_{map,resilver} */
220 kmutex_t vdev_stat_lock; /* vdev_stat */
221 kmutex_t vdev_probe_lock; /* protects vdev_probe_zio */
222 };
223
224 #define VDEV_RAIDZ_MAXPARITY 3
225
286 vdev_ops_t *ops);
287 extern int vdev_alloc(spa_t *spa, vdev_t **vdp, nvlist_t *config,
288 vdev_t *parent, uint_t id, int alloctype);
289 extern void vdev_free(vdev_t *vd);
290
291 /*
292 * Add or remove children and parents
293 */
294 extern void vdev_add_child(vdev_t *pvd, vdev_t *cvd);
295 extern void vdev_remove_child(vdev_t *pvd, vdev_t *cvd);
296 extern void vdev_compact_children(vdev_t *pvd);
297 extern vdev_t *vdev_add_parent(vdev_t *cvd, vdev_ops_t *ops);
298 extern void vdev_remove_parent(vdev_t *cvd);
299
300 /*
301 * vdev sync load and sync
302 */
303 extern void vdev_load_log_state(vdev_t *nvd, vdev_t *ovd);
304 extern boolean_t vdev_log_state_valid(vdev_t *vd);
305 extern void vdev_load(vdev_t *vd);
306 extern int vdev_dtl_load(vdev_t *vd);
307 extern void vdev_sync(vdev_t *vd, uint64_t txg);
308 extern void vdev_sync_done(vdev_t *vd, uint64_t txg);
309 extern void vdev_dirty(vdev_t *vd, int flags, void *arg, uint64_t txg);
310 extern void vdev_dirty_leaves(vdev_t *vd, int flags, uint64_t txg);
311
312 /*
313 * Available vdev types.
314 */
315 extern vdev_ops_t vdev_root_ops;
316 extern vdev_ops_t vdev_mirror_ops;
317 extern vdev_ops_t vdev_replacing_ops;
318 extern vdev_ops_t vdev_raidz_ops;
319 extern vdev_ops_t vdev_disk_ops;
320 extern vdev_ops_t vdev_file_ops;
321 extern vdev_ops_t vdev_missing_ops;
322 extern vdev_ops_t vdev_hole_ops;
323 extern vdev_ops_t vdev_spare_ops;
324
325 /*
326 * Common size functions
327 */
328 extern uint64_t vdev_default_asize(vdev_t *vd, uint64_t psize);
329 extern uint64_t vdev_get_min_asize(vdev_t *vd);
330 extern void vdev_set_min_asize(vdev_t *vd);
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