g_raid.h (16917B) - Raw
1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause 3 * 4 * Copyright (c) 2010 Alexander Motin <mav@FreeBSD.org> 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND 17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE 20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 */ 28 29 #ifndef _G_RAID_H_ 30 #define _G_RAID_H_ 31 32 #include <sys/param.h> 33 #include <sys/kobj.h> 34 #include <sys/bio.h> 35 #include <sys/time.h> 36 #ifdef _KERNEL 37 #include <sys/sysctl.h> 38 #endif 39 40 #define G_RAID_CLASS_NAME "RAID" 41 42 #define G_RAID_MAGIC "GEOM::RAID" 43 44 #define G_RAID_VERSION 0 45 46 struct g_raid_md_object; 47 struct g_raid_tr_object; 48 49 #define G_RAID_DEVICE_FLAG_NOAUTOSYNC 0x0000000000000001ULL 50 #define G_RAID_DEVICE_FLAG_NOFAILSYNC 0x0000000000000002ULL 51 #define G_RAID_DEVICE_FLAG_MASK (G_RAID_DEVICE_FLAG_NOAUTOSYNC | \ 52 G_RAID_DEVICE_FLAG_NOFAILSYNC) 53 54 #ifdef _KERNEL 55 extern u_int g_raid_aggressive_spare; 56 extern u_int g_raid_debug; 57 extern int g_raid_enable; 58 extern int g_raid_read_err_thresh; 59 extern u_int g_raid_start_timeout; 60 extern struct g_class g_raid_class; 61 62 #define G_RAID_DEBUG(lvl, ...) \ 63 _GEOM_DEBUG("GEOM_RAID", g_raid_debug, (lvl), NULL, __VA_ARGS__) 64 #define G_RAID_DEBUG1(lvl, sc, fmt, ...) \ 65 _GEOM_DEBUG("GEOM_RAID", g_raid_debug, (lvl), NULL, "%s: " fmt, \ 66 (sc)->sc_name, ## __VA_ARGS__) 67 #define G_RAID_LOGREQ(lvl, bp, ...) \ 68 _GEOM_DEBUG("GEOM_RAID", g_raid_debug, (lvl), (bp), __VA_ARGS__) 69 70 /* 71 * Flags we use to distinguish I/O initiated by the TR layer to maintain 72 * the volume's characteristics, fix subdisks, extra copies of data, etc. 73 * 74 * G_RAID_BIO_FLAG_SYNC I/O to update an extra copy of the data 75 * for RAID volumes that maintain extra data 76 * and need to rebuild that data. 77 * G_RAID_BIO_FLAG_REMAP I/O done to try to provoke a subdisk into 78 * doing some desirable action such as bad 79 * block remapping after we detect a bad part 80 * of the disk. 81 * G_RAID_BIO_FLAG_LOCKED I/O holds range lock that should re released. 82 * 83 * and the following meta item: 84 * G_RAID_BIO_FLAG_SPECIAL And of the I/O flags that need to make it 85 * through the range locking which would 86 * otherwise defer the I/O until after that 87 * range is unlocked. 88 */ 89 #define G_RAID_BIO_FLAG_SYNC 0x01 90 #define G_RAID_BIO_FLAG_REMAP 0x02 91 #define G_RAID_BIO_FLAG_SPECIAL \ 92 (G_RAID_BIO_FLAG_SYNC|G_RAID_BIO_FLAG_REMAP) 93 #define G_RAID_BIO_FLAG_LOCKED 0x80 94 95 struct g_raid_lock { 96 off_t l_offset; 97 off_t l_length; 98 void *l_callback_arg; 99 int l_pending; 100 LIST_ENTRY(g_raid_lock) l_next; 101 }; 102 103 #define G_RAID_EVENT_WAIT 0x01 104 #define G_RAID_EVENT_VOLUME 0x02 105 #define G_RAID_EVENT_SUBDISK 0x04 106 #define G_RAID_EVENT_DISK 0x08 107 #define G_RAID_EVENT_DONE 0x10 108 struct g_raid_event { 109 void *e_tgt; 110 int e_event; 111 int e_flags; 112 int e_error; 113 TAILQ_ENTRY(g_raid_event) e_next; 114 }; 115 #define G_RAID_DISK_S_NONE 0x00 /* State is unknown. */ 116 #define G_RAID_DISK_S_OFFLINE 0x01 /* Missing disk placeholder. */ 117 #define G_RAID_DISK_S_DISABLED 0x02 /* Disabled. */ 118 #define G_RAID_DISK_S_FAILED 0x03 /* Failed. */ 119 #define G_RAID_DISK_S_STALE_FAILED 0x04 /* Old failed. */ 120 #define G_RAID_DISK_S_SPARE 0x05 /* Hot-spare. */ 121 #define G_RAID_DISK_S_STALE 0x06 /* Old disk, unused now. */ 122 #define G_RAID_DISK_S_ACTIVE 0x07 /* Operational. */ 123 124 #define G_RAID_DISK_E_DISCONNECTED 0x01 125 126 struct g_raid_disk { 127 struct g_raid_softc *d_softc; /* Back-pointer to softc. */ 128 struct g_consumer *d_consumer; /* GEOM disk consumer. */ 129 void *d_md_data; /* Disk's metadata storage. */ 130 int d_candelete; /* BIO_DELETE supported. */ 131 uint64_t d_flags; /* Additional flags. */ 132 u_int d_state; /* Disk state. */ 133 u_int d_load; /* Disk average load. */ 134 off_t d_last_offset; /* Last head offset. */ 135 int d_read_errs; /* Count of the read errors */ 136 TAILQ_HEAD(, g_raid_subdisk) d_subdisks; /* List of subdisks. */ 137 TAILQ_ENTRY(g_raid_disk) d_next; /* Next disk in the node. */ 138 struct g_kerneldump d_kd; /* Kernel dumping method/args. */ 139 }; 140 141 #define G_RAID_SUBDISK_S_NONE 0x00 /* Absent. */ 142 #define G_RAID_SUBDISK_S_FAILED 0x01 /* Failed. */ 143 #define G_RAID_SUBDISK_S_NEW 0x02 /* Blank. */ 144 #define G_RAID_SUBDISK_S_REBUILD 0x03 /* Blank + rebuild. */ 145 #define G_RAID_SUBDISK_S_UNINITIALIZED 0x04 /* Disk of the new volume. */ 146 #define G_RAID_SUBDISK_S_STALE 0x05 /* Dirty. */ 147 #define G_RAID_SUBDISK_S_RESYNC 0x06 /* Dirty + check/repair. */ 148 #define G_RAID_SUBDISK_S_ACTIVE 0x07 /* Usable. */ 149 150 #define G_RAID_SUBDISK_E_NEW 0x01 /* A new subdisk has arrived */ 151 #define G_RAID_SUBDISK_E_FAILED 0x02 /* A subdisk failed, but remains in volume */ 152 #define G_RAID_SUBDISK_E_DISCONNECTED 0x03 /* A subdisk removed from volume. */ 153 #define G_RAID_SUBDISK_E_FIRST_TR_PRIVATE 0x80 /* translation private events */ 154 155 #define G_RAID_SUBDISK_POS(sd) \ 156 ((sd)->sd_disk ? ((sd)->sd_disk->d_last_offset - (sd)->sd_offset) : 0) 157 #define G_RAID_SUBDISK_TRACK_SIZE (1 * 1024 * 1024) 158 #define G_RAID_SUBDISK_LOAD(sd) \ 159 ((sd)->sd_disk ? ((sd)->sd_disk->d_load) : 0) 160 #define G_RAID_SUBDISK_LOAD_SCALE 256 161 162 struct g_raid_subdisk { 163 struct g_raid_softc *sd_softc; /* Back-pointer to softc. */ 164 struct g_raid_disk *sd_disk; /* Where this subdisk lives. */ 165 struct g_raid_volume *sd_volume; /* Volume, sd is a part of. */ 166 off_t sd_offset; /* Offset on the disk. */ 167 off_t sd_size; /* Size on the disk. */ 168 u_int sd_pos; /* Position in volume. */ 169 u_int sd_state; /* Subdisk state. */ 170 off_t sd_rebuild_pos; /* Rebuild position. */ 171 int sd_recovery; /* Count of recovery reqs. */ 172 TAILQ_ENTRY(g_raid_subdisk) sd_next; /* Next subdisk on disk. */ 173 }; 174 175 #define G_RAID_MAX_SUBDISKS 16 176 #define G_RAID_MAX_VOLUMENAME 32 177 178 #define G_RAID_VOLUME_S_STARTING 0x00 179 #define G_RAID_VOLUME_S_BROKEN 0x01 180 #define G_RAID_VOLUME_S_DEGRADED 0x02 181 #define G_RAID_VOLUME_S_SUBOPTIMAL 0x03 182 #define G_RAID_VOLUME_S_OPTIMAL 0x04 183 #define G_RAID_VOLUME_S_UNSUPPORTED 0x05 184 #define G_RAID_VOLUME_S_STOPPED 0x06 185 186 #define G_RAID_VOLUME_S_ALIVE(s) \ 187 ((s) == G_RAID_VOLUME_S_DEGRADED || \ 188 (s) == G_RAID_VOLUME_S_SUBOPTIMAL || \ 189 (s) == G_RAID_VOLUME_S_OPTIMAL) 190 191 #define G_RAID_VOLUME_E_DOWN 0x00 192 #define G_RAID_VOLUME_E_UP 0x01 193 #define G_RAID_VOLUME_E_START 0x10 194 #define G_RAID_VOLUME_E_STARTMD 0x11 195 196 #define G_RAID_VOLUME_RL_RAID0 0x00 197 #define G_RAID_VOLUME_RL_RAID1 0x01 198 #define G_RAID_VOLUME_RL_RAID3 0x03 199 #define G_RAID_VOLUME_RL_RAID4 0x04 200 #define G_RAID_VOLUME_RL_RAID5 0x05 201 #define G_RAID_VOLUME_RL_RAID6 0x06 202 #define G_RAID_VOLUME_RL_RAIDMDF 0x07 203 #define G_RAID_VOLUME_RL_RAID1E 0x11 204 #define G_RAID_VOLUME_RL_SINGLE 0x0f 205 #define G_RAID_VOLUME_RL_CONCAT 0x1f 206 #define G_RAID_VOLUME_RL_RAID5E 0x15 207 #define G_RAID_VOLUME_RL_RAID5EE 0x25 208 #define G_RAID_VOLUME_RL_RAID5R 0x35 209 #define G_RAID_VOLUME_RL_UNKNOWN 0xff 210 211 #define G_RAID_VOLUME_RLQ_NONE 0x00 212 #define G_RAID_VOLUME_RLQ_R1SM 0x00 213 #define G_RAID_VOLUME_RLQ_R1MM 0x01 214 #define G_RAID_VOLUME_RLQ_R3P0 0x00 215 #define G_RAID_VOLUME_RLQ_R3PN 0x01 216 #define G_RAID_VOLUME_RLQ_R4P0 0x00 217 #define G_RAID_VOLUME_RLQ_R4PN 0x01 218 #define G_RAID_VOLUME_RLQ_R5RA 0x00 219 #define G_RAID_VOLUME_RLQ_R5RS 0x01 220 #define G_RAID_VOLUME_RLQ_R5LA 0x02 221 #define G_RAID_VOLUME_RLQ_R5LS 0x03 222 #define G_RAID_VOLUME_RLQ_R6RA 0x00 223 #define G_RAID_VOLUME_RLQ_R6RS 0x01 224 #define G_RAID_VOLUME_RLQ_R6LA 0x02 225 #define G_RAID_VOLUME_RLQ_R6LS 0x03 226 #define G_RAID_VOLUME_RLQ_RMDFRA 0x00 227 #define G_RAID_VOLUME_RLQ_RMDFRS 0x01 228 #define G_RAID_VOLUME_RLQ_RMDFLA 0x02 229 #define G_RAID_VOLUME_RLQ_RMDFLS 0x03 230 #define G_RAID_VOLUME_RLQ_R1EA 0x00 231 #define G_RAID_VOLUME_RLQ_R1EO 0x01 232 #define G_RAID_VOLUME_RLQ_R5ERA 0x00 233 #define G_RAID_VOLUME_RLQ_R5ERS 0x01 234 #define G_RAID_VOLUME_RLQ_R5ELA 0x02 235 #define G_RAID_VOLUME_RLQ_R5ELS 0x03 236 #define G_RAID_VOLUME_RLQ_R5EERA 0x00 237 #define G_RAID_VOLUME_RLQ_R5EERS 0x01 238 #define G_RAID_VOLUME_RLQ_R5EELA 0x02 239 #define G_RAID_VOLUME_RLQ_R5EELS 0x03 240 #define G_RAID_VOLUME_RLQ_R5RRA 0x00 241 #define G_RAID_VOLUME_RLQ_R5RRS 0x01 242 #define G_RAID_VOLUME_RLQ_R5RLA 0x02 243 #define G_RAID_VOLUME_RLQ_R5RLS 0x03 244 #define G_RAID_VOLUME_RLQ_UNKNOWN 0xff 245 246 struct g_raid_volume; 247 248 struct g_raid_volume { 249 struct g_raid_softc *v_softc; /* Back-pointer to softc. */ 250 struct g_provider *v_provider; /* GEOM provider. */ 251 struct g_raid_subdisk v_subdisks[G_RAID_MAX_SUBDISKS]; 252 /* Subdisks of this volume. */ 253 void *v_md_data; /* Volume's metadata storage. */ 254 struct g_raid_tr_object *v_tr; /* Transformation object. */ 255 char v_name[G_RAID_MAX_VOLUMENAME]; 256 /* Volume name. */ 257 u_int v_state; /* Volume state. */ 258 u_int v_raid_level; /* Array RAID level. */ 259 u_int v_raid_level_qualifier; /* RAID level det. */ 260 u_int v_disks_count; /* Number of disks in array. */ 261 u_int v_mdf_pdisks; /* Number of parity disks 262 in RAIDMDF array. */ 263 uint16_t v_mdf_polynomial; /* Polynomial for RAIDMDF. */ 264 uint8_t v_mdf_method; /* Generation method for RAIDMDF. */ 265 u_int v_strip_size; /* Array strip size. */ 266 u_int v_rotate_parity; /* Rotate RAID5R parity 267 after numer of stripes. */ 268 u_int v_sectorsize; /* Volume sector size. */ 269 off_t v_mediasize; /* Volume media size. */ 270 struct bio_queue_head v_inflight; /* In-flight write requests. */ 271 struct bio_queue_head v_locked; /* Blocked I/O requests. */ 272 LIST_HEAD(, g_raid_lock) v_locks; /* List of locked regions. */ 273 int v_pending_lock; /* writes to locked region */ 274 int v_dirty; /* Volume is DIRTY. */ 275 struct timeval v_last_done; /* Time of the last I/O. */ 276 time_t v_last_write; /* Time of the last write. */ 277 u_int v_writes; /* Number of active writes. */ 278 struct root_hold_token *v_rootmount; /* Root mount delay token. */ 279 int v_starting; /* Volume is starting */ 280 int v_stopping; /* Volume is stopping */ 281 int v_provider_open; /* Number of opens. */ 282 int v_global_id; /* Global volume ID (rX). */ 283 int v_read_only; /* Volume is read-only. */ 284 TAILQ_ENTRY(g_raid_volume) v_next; /* List of volumes entry. */ 285 LIST_ENTRY(g_raid_volume) v_global_next; /* Global list entry. */ 286 }; 287 288 #define G_RAID_NODE_E_WAKE 0x00 289 #define G_RAID_NODE_E_START 0x01 290 291 struct g_raid_softc { 292 struct g_raid_md_object *sc_md; /* Metadata object. */ 293 struct g_geom *sc_geom; /* GEOM class instance. */ 294 uint64_t sc_flags; /* Additional flags. */ 295 TAILQ_HEAD(, g_raid_volume) sc_volumes; /* List of volumes. */ 296 TAILQ_HEAD(, g_raid_disk) sc_disks; /* List of disks. */ 297 struct sx sc_lock; /* Main node lock. */ 298 struct proc *sc_worker; /* Worker process. */ 299 struct mtx sc_queue_mtx; /* Worker queues lock. */ 300 TAILQ_HEAD(, g_raid_event) sc_events; /* Worker events queue. */ 301 struct bio_queue_head sc_queue; /* Worker I/O queue. */ 302 int sc_stopping; /* Node is stopping */ 303 }; 304 #define sc_name sc_geom->name 305 306 SYSCTL_DECL(_kern_geom_raid); 307 308 /* 309 * KOBJ parent class of metadata processing modules. 310 */ 311 struct g_raid_md_class { 312 KOBJ_CLASS_FIELDS; 313 int mdc_enable; 314 int mdc_priority; 315 LIST_ENTRY(g_raid_md_class) mdc_list; 316 }; 317 318 /* 319 * KOBJ instance of metadata processing module. 320 */ 321 struct g_raid_md_object { 322 KOBJ_FIELDS; 323 struct g_raid_md_class *mdo_class; 324 struct g_raid_softc *mdo_softc; /* Back-pointer to softc. */ 325 }; 326 327 int g_raid_md_modevent(module_t, int, void *); 328 329 #define G_RAID_MD_DECLARE(name, label) \ 330 static moduledata_t g_raid_md_##name##_mod = { \ 331 "g_raid_md_" __XSTRING(name), \ 332 g_raid_md_modevent, \ 333 &g_raid_md_##name##_class \ 334 }; \ 335 DECLARE_MODULE(g_raid_md_##name, g_raid_md_##name##_mod, \ 336 SI_SUB_DRIVERS, SI_ORDER_SECOND); \ 337 MODULE_DEPEND(g_raid_md_##name, geom_raid, 0, 0, 0); \ 338 SYSCTL_NODE(_kern_geom_raid, OID_AUTO, name, \ 339 CTLFLAG_RD | CTLFLAG_MPSAFE, \ 340 NULL, label " metadata module"); \ 341 SYSCTL_INT(_kern_geom_raid_##name, OID_AUTO, enable, \ 342 CTLFLAG_RWTUN, &g_raid_md_##name##_class.mdc_enable, 0, \ 343 "Enable " label " metadata format taste") 344 345 /* 346 * KOBJ parent class of data transformation modules. 347 */ 348 struct g_raid_tr_class { 349 KOBJ_CLASS_FIELDS; 350 int trc_enable; 351 int trc_priority; 352 int trc_accept_unmapped; 353 LIST_ENTRY(g_raid_tr_class) trc_list; 354 }; 355 356 /* 357 * KOBJ instance of data transformation module. 358 */ 359 struct g_raid_tr_object { 360 KOBJ_FIELDS; 361 struct g_raid_tr_class *tro_class; 362 struct g_raid_volume *tro_volume; /* Back-pointer to volume. */ 363 }; 364 365 int g_raid_tr_modevent(module_t, int, void *); 366 367 #define G_RAID_TR_DECLARE(name, label) \ 368 static moduledata_t g_raid_tr_##name##_mod = { \ 369 "g_raid_tr_" __XSTRING(name), \ 370 g_raid_tr_modevent, \ 371 &g_raid_tr_##name##_class \ 372 }; \ 373 DECLARE_MODULE(g_raid_tr_##name, g_raid_tr_##name##_mod, \ 374 SI_SUB_DRIVERS, SI_ORDER_FIRST); \ 375 MODULE_DEPEND(g_raid_tr_##name, geom_raid, 0, 0, 0); \ 376 SYSCTL_NODE(_kern_geom_raid, OID_AUTO, name, \ 377 CTLFLAG_RD | CTLFLAG_MPSAFE, \ 378 NULL, label " transformation module"); \ 379 SYSCTL_INT(_kern_geom_raid_##name, OID_AUTO, enable, \ 380 CTLFLAG_RWTUN, &g_raid_tr_##name##_class.trc_enable, 0, \ 381 "Enable " label " transformation module taste") 382 383 const char * g_raid_volume_level2str(int level, int qual); 384 int g_raid_volume_str2level(const char *str, int *level, int *qual); 385 const char * g_raid_volume_state2str(int state); 386 const char * g_raid_subdisk_state2str(int state); 387 const char * g_raid_disk_state2str(int state); 388 389 struct g_raid_softc * g_raid_create_node(struct g_class *mp, 390 const char *name, struct g_raid_md_object *md); 391 int g_raid_create_node_format(const char *format, struct gctl_req *req, 392 struct g_geom **gp); 393 struct g_raid_volume * g_raid_create_volume(struct g_raid_softc *sc, 394 const char *name, int id); 395 struct g_raid_disk * g_raid_create_disk(struct g_raid_softc *sc); 396 const char * g_raid_get_diskname(struct g_raid_disk *disk); 397 void g_raid_get_disk_info(struct g_raid_disk *disk); 398 399 int g_raid_start_volume(struct g_raid_volume *vol); 400 401 int g_raid_destroy_node(struct g_raid_softc *sc, int worker); 402 int g_raid_destroy_volume(struct g_raid_volume *vol); 403 int g_raid_destroy_disk(struct g_raid_disk *disk); 404 405 void g_raid_iodone(struct bio *bp, int error); 406 void g_raid_subdisk_iostart(struct g_raid_subdisk *sd, struct bio *bp); 407 int g_raid_subdisk_kerneldump(struct g_raid_subdisk *sd, void *virtual, 408 off_t offset, size_t length); 409 410 struct g_consumer *g_raid_open_consumer(struct g_raid_softc *sc, 411 const char *name); 412 void g_raid_kill_consumer(struct g_raid_softc *sc, struct g_consumer *cp); 413 414 void g_raid_report_disk_state(struct g_raid_disk *disk); 415 void g_raid_change_disk_state(struct g_raid_disk *disk, int state); 416 void g_raid_change_subdisk_state(struct g_raid_subdisk *sd, int state); 417 void g_raid_change_volume_state(struct g_raid_volume *vol, int state); 418 419 void g_raid_write_metadata(struct g_raid_softc *sc, struct g_raid_volume *vol, 420 struct g_raid_subdisk *sd, struct g_raid_disk *disk); 421 void g_raid_fail_disk(struct g_raid_softc *sc, 422 struct g_raid_subdisk *sd, struct g_raid_disk *disk); 423 424 void g_raid_tr_flush_common(struct g_raid_tr_object *tr, struct bio *bp); 425 int g_raid_tr_kerneldump_common(struct g_raid_tr_object *tr, 426 void *virtual, vm_offset_t physical, off_t offset, size_t length); 427 428 u_int g_raid_ndisks(struct g_raid_softc *sc, int state); 429 u_int g_raid_nsubdisks(struct g_raid_volume *vol, int state); 430 u_int g_raid_nopens(struct g_raid_softc *sc); 431 struct g_raid_subdisk * g_raid_get_subdisk(struct g_raid_volume *vol, 432 int state); 433 #define G_RAID_DESTROY_SOFT 0 434 #define G_RAID_DESTROY_DELAYED 1 435 #define G_RAID_DESTROY_HARD 2 436 int g_raid_destroy(struct g_raid_softc *sc, int how); 437 int g_raid_event_send(void *arg, int event, int flags); 438 int g_raid_lock_range(struct g_raid_volume *vol, off_t off, off_t len, 439 struct bio *ignore, void *argp); 440 int g_raid_unlock_range(struct g_raid_volume *vol, off_t off, off_t len); 441 442 g_ctl_req_t g_raid_ctl; 443 #endif /* _KERNEL */ 444 445 #endif /* !_G_RAID_H_ */