1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD 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 * $FreeBSD$ 29 */ 30 31 #ifndef _G_RAID_H_ 32 #define _G_RAID_H_ 33 34 #include <sys/param.h> 35 #include <sys/kobj.h> 36 #include <sys/bio.h> 37 #include <sys/time.h> 38 #ifdef _KERNEL 39 #include <sys/sysctl.h> 40 #endif 41 42 #define G_RAID_CLASS_NAME "RAID" 43 44 #define G_RAID_MAGIC "GEOM::RAID" 45 46 #define G_RAID_VERSION 0 47 48 struct g_raid_md_object; 49 struct g_raid_tr_object; 50 51 #define G_RAID_DEVICE_FLAG_NOAUTOSYNC 0x0000000000000001ULL 52 #define G_RAID_DEVICE_FLAG_NOFAILSYNC 0x0000000000000002ULL 53 #define G_RAID_DEVICE_FLAG_MASK (G_RAID_DEVICE_FLAG_NOAUTOSYNC | \ 54 G_RAID_DEVICE_FLAG_NOFAILSYNC) 55 56 #ifdef _KERNEL 57 extern u_int g_raid_aggressive_spare; 58 extern u_int g_raid_debug; 59 extern int g_raid_enable; 60 extern int g_raid_read_err_thresh; 61 extern u_int g_raid_start_timeout; 62 extern struct g_class g_raid_class; 63 64 #define G_RAID_DEBUG(lvl, ...) \ 65 _GEOM_DEBUG("GEOM_RAID", g_raid_debug, (lvl), NULL, __VA_ARGS__) 66 #define G_RAID_DEBUG1(lvl, sc, fmt, ...) \ 67 _GEOM_DEBUG("GEOM_RAID", g_raid_debug, (lvl), NULL, "%s: " fmt, \ 68 (sc)->sc_name, ## __VA_ARGS__) 69 #define G_RAID_LOGREQ(lvl, bp, ...) \ 70 _GEOM_DEBUG("GEOM_RAID", g_raid_debug, (lvl), (bp), __VA_ARGS__) 71 72 /* 73 * Flags we use to distinguish I/O initiated by the TR layer to maintain 74 * the volume's characteristics, fix subdisks, extra copies of data, etc. 75 * 76 * G_RAID_BIO_FLAG_SYNC I/O to update an extra copy of the data 77 * for RAID volumes that maintain extra data 78 * and need to rebuild that data. 79 * G_RAID_BIO_FLAG_REMAP I/O done to try to provoke a subdisk into 80 * doing some desirable action such as bad 81 * block remapping after we detect a bad part 82 * of the disk. 83 * G_RAID_BIO_FLAG_LOCKED I/O holds range lock that should re released. 84 * 85 * and the following meta item: 86 * G_RAID_BIO_FLAG_SPECIAL And of the I/O flags that need to make it 87 * through the range locking which would 88 * otherwise defer the I/O until after that 89 * range is unlocked. 90 */ 91 #define G_RAID_BIO_FLAG_SYNC 0x01 92 #define G_RAID_BIO_FLAG_REMAP 0x02 93 #define G_RAID_BIO_FLAG_SPECIAL \ 94 (G_RAID_BIO_FLAG_SYNC|G_RAID_BIO_FLAG_REMAP) 95 #define G_RAID_BIO_FLAG_LOCKED 0x80 96 97 struct g_raid_lock { 98 off_t l_offset; 99 off_t l_length; 100 void *l_callback_arg; 101 int l_pending; 102 LIST_ENTRY(g_raid_lock) l_next; 103 }; 104 105 #define G_RAID_EVENT_WAIT 0x01 106 #define G_RAID_EVENT_VOLUME 0x02 107 #define G_RAID_EVENT_SUBDISK 0x04 108 #define G_RAID_EVENT_DISK 0x08 109 #define G_RAID_EVENT_DONE 0x10 110 struct g_raid_event { 111 void *e_tgt; 112 int e_event; 113 int e_flags; 114 int e_error; 115 TAILQ_ENTRY(g_raid_event) e_next; 116 }; 117 #define G_RAID_DISK_S_NONE 0x00 /* State is unknown. */ 118 #define G_RAID_DISK_S_OFFLINE 0x01 /* Missing disk placeholder. */ 119 #define G_RAID_DISK_S_DISABLED 0x02 /* Disabled. */ 120 #define G_RAID_DISK_S_FAILED 0x03 /* Failed. */ 121 #define G_RAID_DISK_S_STALE_FAILED 0x04 /* Old failed. */ 122 #define G_RAID_DISK_S_SPARE 0x05 /* Hot-spare. */ 123 #define G_RAID_DISK_S_STALE 0x06 /* Old disk, unused now. */ 124 #define G_RAID_DISK_S_ACTIVE 0x07 /* Operational. */ 125 126 #define G_RAID_DISK_E_DISCONNECTED 0x01 127 128 struct g_raid_disk { 129 struct g_raid_softc *d_softc; /* Back-pointer to softc. */ 130 struct g_consumer *d_consumer; /* GEOM disk consumer. */ 131 void *d_md_data; /* Disk's metadata storage. */ 132 int d_candelete; /* BIO_DELETE supported. */ 133 uint64_t d_flags; /* Additional flags. */ 134 u_int d_state; /* Disk state. */ 135 u_int d_load; /* Disk average load. */ 136 off_t d_last_offset; /* Last head offset. */ 137 int d_read_errs; /* Count of the read errors */ 138 TAILQ_HEAD(, g_raid_subdisk) d_subdisks; /* List of subdisks. */ 139 TAILQ_ENTRY(g_raid_disk) d_next; /* Next disk in the node. */ 140 struct g_kerneldump d_kd; /* Kernel dumping method/args. */ 141 }; 142 143 #define G_RAID_SUBDISK_S_NONE 0x00 /* Absent. */ 144 #define G_RAID_SUBDISK_S_FAILED 0x01 /* Failed. */ 145 #define G_RAID_SUBDISK_S_NEW 0x02 /* Blank. */ 146 #define G_RAID_SUBDISK_S_REBUILD 0x03 /* Blank + rebuild. */ 147 #define G_RAID_SUBDISK_S_UNINITIALIZED 0x04 /* Disk of the new volume. */ 148 #define G_RAID_SUBDISK_S_STALE 0x05 /* Dirty. */ 149 #define G_RAID_SUBDISK_S_RESYNC 0x06 /* Dirty + check/repair. */ 150 #define G_RAID_SUBDISK_S_ACTIVE 0x07 /* Usable. */ 151 152 #define G_RAID_SUBDISK_E_NEW 0x01 /* A new subdisk has arrived */ 153 #define G_RAID_SUBDISK_E_FAILED 0x02 /* A subdisk failed, but remains in volume */ 154 #define G_RAID_SUBDISK_E_DISCONNECTED 0x03 /* A subdisk removed from volume. */ 155 #define G_RAID_SUBDISK_E_FIRST_TR_PRIVATE 0x80 /* translation private events */ 156 157 #define G_RAID_SUBDISK_POS(sd) \ 158 ((sd)->sd_disk ? ((sd)->sd_disk->d_last_offset - (sd)->sd_offset) : 0) 159 #define G_RAID_SUBDISK_TRACK_SIZE (1 * 1024 * 1024) 160 #define G_RAID_SUBDISK_LOAD(sd) \ 161 ((sd)->sd_disk ? ((sd)->sd_disk->d_load) : 0) 162 #define G_RAID_SUBDISK_LOAD_SCALE 256 163 164 struct g_raid_subdisk { 165 struct g_raid_softc *sd_softc; /* Back-pointer to softc. */ 166 struct g_raid_disk *sd_disk; /* Where this subdisk lives. */ 167 struct g_raid_volume *sd_volume; /* Volume, sd is a part of. */ 168 off_t sd_offset; /* Offset on the disk. */ 169 off_t sd_size; /* Size on the disk. */ 170 u_int sd_pos; /* Position in volume. */ 171 u_int sd_state; /* Subdisk state. */ 172 off_t sd_rebuild_pos; /* Rebuild position. */ 173 int sd_recovery; /* Count of recovery reqs. */ 174 TAILQ_ENTRY(g_raid_subdisk) sd_next; /* Next subdisk on disk. */ 175 }; 176 177 #define G_RAID_MAX_SUBDISKS 16 178 #define G_RAID_MAX_VOLUMENAME 32 179 180 #define G_RAID_VOLUME_S_STARTING 0x00 181 #define G_RAID_VOLUME_S_BROKEN 0x01 182 #define G_RAID_VOLUME_S_DEGRADED 0x02 183 #define G_RAID_VOLUME_S_SUBOPTIMAL 0x03 184 #define G_RAID_VOLUME_S_OPTIMAL 0x04 185 #define G_RAID_VOLUME_S_UNSUPPORTED 0x05 186 #define G_RAID_VOLUME_S_STOPPED 0x06 187 188 #define G_RAID_VOLUME_S_ALIVE(s) \ 189 ((s) == G_RAID_VOLUME_S_DEGRADED || \ 190 (s) == G_RAID_VOLUME_S_SUBOPTIMAL || \ 191 (s) == G_RAID_VOLUME_S_OPTIMAL) 192 193 #define G_RAID_VOLUME_E_DOWN 0x00 194 #define G_RAID_VOLUME_E_UP 0x01 195 #define G_RAID_VOLUME_E_START 0x10 196 #define G_RAID_VOLUME_E_STARTMD 0x11 197 198 #define G_RAID_VOLUME_RL_RAID0 0x00 199 #define G_RAID_VOLUME_RL_RAID1 0x01 200 #define G_RAID_VOLUME_RL_RAID3 0x03 201 #define G_RAID_VOLUME_RL_RAID4 0x04 202 #define G_RAID_VOLUME_RL_RAID5 0x05 203 #define G_RAID_VOLUME_RL_RAID6 0x06 204 #define G_RAID_VOLUME_RL_RAIDMDF 0x07 205 #define G_RAID_VOLUME_RL_RAID1E 0x11 206 #define G_RAID_VOLUME_RL_SINGLE 0x0f 207 #define G_RAID_VOLUME_RL_CONCAT 0x1f 208 #define G_RAID_VOLUME_RL_RAID5E 0x15 209 #define G_RAID_VOLUME_RL_RAID5EE 0x25 210 #define G_RAID_VOLUME_RL_RAID5R 0x35 211 #define G_RAID_VOLUME_RL_UNKNOWN 0xff 212 213 #define G_RAID_VOLUME_RLQ_NONE 0x00 214 #define G_RAID_VOLUME_RLQ_R1SM 0x00 215 #define G_RAID_VOLUME_RLQ_R1MM 0x01 216 #define G_RAID_VOLUME_RLQ_R3P0 0x00 217 #define G_RAID_VOLUME_RLQ_R3PN 0x01 218 #define G_RAID_VOLUME_RLQ_R4P0 0x00 219 #define G_RAID_VOLUME_RLQ_R4PN 0x01 220 #define G_RAID_VOLUME_RLQ_R5RA 0x00 221 #define G_RAID_VOLUME_RLQ_R5RS 0x01 222 #define G_RAID_VOLUME_RLQ_R5LA 0x02 223 #define G_RAID_VOLUME_RLQ_R5LS 0x03 224 #define G_RAID_VOLUME_RLQ_R6RA 0x00 225 #define G_RAID_VOLUME_RLQ_R6RS 0x01 226 #define G_RAID_VOLUME_RLQ_R6LA 0x02 227 #define G_RAID_VOLUME_RLQ_R6LS 0x03 228 #define G_RAID_VOLUME_RLQ_RMDFRA 0x00 229 #define G_RAID_VOLUME_RLQ_RMDFRS 0x01 230 #define G_RAID_VOLUME_RLQ_RMDFLA 0x02 231 #define G_RAID_VOLUME_RLQ_RMDFLS 0x03 232 #define G_RAID_VOLUME_RLQ_R1EA 0x00 233 #define G_RAID_VOLUME_RLQ_R1EO 0x01 234 #define G_RAID_VOLUME_RLQ_R5ERA 0x00 235 #define G_RAID_VOLUME_RLQ_R5ERS 0x01 236 #define G_RAID_VOLUME_RLQ_R5ELA 0x02 237 #define G_RAID_VOLUME_RLQ_R5ELS 0x03 238 #define G_RAID_VOLUME_RLQ_R5EERA 0x00 239 #define G_RAID_VOLUME_RLQ_R5EERS 0x01 240 #define G_RAID_VOLUME_RLQ_R5EELA 0x02 241 #define G_RAID_VOLUME_RLQ_R5EELS 0x03 242 #define G_RAID_VOLUME_RLQ_R5RRA 0x00 243 #define G_RAID_VOLUME_RLQ_R5RRS 0x01 244 #define G_RAID_VOLUME_RLQ_R5RLA 0x02 245 #define G_RAID_VOLUME_RLQ_R5RLS 0x03 246 #define G_RAID_VOLUME_RLQ_UNKNOWN 0xff 247 248 struct g_raid_volume; 249 250 struct g_raid_volume { 251 struct g_raid_softc *v_softc; /* Back-pointer to softc. */ 252 struct g_provider *v_provider; /* GEOM provider. */ 253 struct g_raid_subdisk v_subdisks[G_RAID_MAX_SUBDISKS]; 254 /* Subdisks of this volume. */ 255 void *v_md_data; /* Volume's metadata storage. */ 256 struct g_raid_tr_object *v_tr; /* Transformation object. */ 257 char v_name[G_RAID_MAX_VOLUMENAME]; 258 /* Volume name. */ 259 u_int v_state; /* Volume state. */ 260 u_int v_raid_level; /* Array RAID level. */ 261 u_int v_raid_level_qualifier; /* RAID level det. */ 262 u_int v_disks_count; /* Number of disks in array. */ 263 u_int v_mdf_pdisks; /* Number of parity disks 264 in RAIDMDF array. */ 265 uint16_t v_mdf_polynomial; /* Polynomial for RAIDMDF. */ 266 uint8_t v_mdf_method; /* Generation method for RAIDMDF. */ 267 u_int v_strip_size; /* Array strip size. */ 268 u_int v_rotate_parity; /* Rotate RAID5R parity 269 after numer of stripes. */ 270 u_int v_sectorsize; /* Volume sector size. */ 271 off_t v_mediasize; /* Volume media size. */ 272 struct bio_queue_head v_inflight; /* In-flight write requests. */ 273 struct bio_queue_head v_locked; /* Blocked I/O requests. */ 274 LIST_HEAD(, g_raid_lock) v_locks; /* List of locked regions. */ 275 int v_pending_lock; /* writes to locked region */ 276 int v_dirty; /* Volume is DIRTY. */ 277 struct timeval v_last_done; /* Time of the last I/O. */ 278 time_t v_last_write; /* Time of the last write. */ 279 u_int v_writes; /* Number of active writes. */ 280 struct root_hold_token *v_rootmount; /* Root mount delay token. */ 281 int v_starting; /* Volume is starting */ 282 int v_stopping; /* Volume is stopping */ 283 int v_provider_open; /* Number of opens. */ 284 int v_global_id; /* Global volume ID (rX). */ 285 int v_read_only; /* Volume is read-only. */ 286 TAILQ_ENTRY(g_raid_volume) v_next; /* List of volumes entry. */ 287 LIST_ENTRY(g_raid_volume) v_global_next; /* Global list entry. */ 288 }; 289 290 #define G_RAID_NODE_E_WAKE 0x00 291 #define G_RAID_NODE_E_START 0x01 292 293 struct g_raid_softc { 294 struct g_raid_md_object *sc_md; /* Metadata object. */ 295 struct g_geom *sc_geom; /* GEOM class instance. */ 296 uint64_t sc_flags; /* Additional flags. */ 297 TAILQ_HEAD(, g_raid_volume) sc_volumes; /* List of volumes. */ 298 TAILQ_HEAD(, g_raid_disk) sc_disks; /* List of disks. */ 299 struct sx sc_lock; /* Main node lock. */ 300 struct proc *sc_worker; /* Worker process. */ 301 struct mtx sc_queue_mtx; /* Worker queues lock. */ 302 TAILQ_HEAD(, g_raid_event) sc_events; /* Worker events queue. */ 303 struct bio_queue_head sc_queue; /* Worker I/O queue. */ 304 int sc_stopping; /* Node is stopping */ 305 }; 306 #define sc_name sc_geom->name 307 308 SYSCTL_DECL(_kern_geom_raid); 309 310 /* 311 * KOBJ parent class of metadata processing modules. 312 */ 313 struct g_raid_md_class { 314 KOBJ_CLASS_FIELDS; 315 int mdc_enable; 316 int mdc_priority; 317 LIST_ENTRY(g_raid_md_class) mdc_list; 318 }; 319 320 /* 321 * KOBJ instance of metadata processing module. 322 */ 323 struct g_raid_md_object { 324 KOBJ_FIELDS; 325 struct g_raid_md_class *mdo_class; 326 struct g_raid_softc *mdo_softc; /* Back-pointer to softc. */ 327 }; 328 329 int g_raid_md_modevent(module_t, int, void *); 330 331 #define G_RAID_MD_DECLARE(name, label) \ 332 static moduledata_t g_raid_md_##name##_mod = { \ 333 "g_raid_md_" __XSTRING(name), \ 334 g_raid_md_modevent, \ 335 &g_raid_md_##name##_class \ 336 }; \ 337 DECLARE_MODULE(g_raid_md_##name, g_raid_md_##name##_mod, \ 338 SI_SUB_DRIVERS, SI_ORDER_SECOND); \ 339 MODULE_DEPEND(g_raid_md_##name, geom_raid, 0, 0, 0); \ 340 SYSCTL_NODE(_kern_geom_raid, OID_AUTO, name, \ 341 CTLFLAG_RD | CTLFLAG_MPSAFE, \ 342 NULL, label " metadata module"); \ 343 SYSCTL_INT(_kern_geom_raid_##name, OID_AUTO, enable, \ 344 CTLFLAG_RWTUN, &g_raid_md_##name##_class.mdc_enable, 0, \ 345 "Enable " label " metadata format taste") 346 347 /* 348 * KOBJ parent class of data transformation modules. 349 */ 350 struct g_raid_tr_class { 351 KOBJ_CLASS_FIELDS; 352 int trc_enable; 353 int trc_priority; 354 int trc_accept_unmapped; 355 LIST_ENTRY(g_raid_tr_class) trc_list; 356 }; 357 358 /* 359 * KOBJ instance of data transformation module. 360 */ 361 struct g_raid_tr_object { 362 KOBJ_FIELDS; 363 struct g_raid_tr_class *tro_class; 364 struct g_raid_volume *tro_volume; /* Back-pointer to volume. */ 365 }; 366 367 int g_raid_tr_modevent(module_t, int, void *); 368 369 #define G_RAID_TR_DECLARE(name, label) \ 370 static moduledata_t g_raid_tr_##name##_mod = { \ 371 "g_raid_tr_" __XSTRING(name), \ 372 g_raid_tr_modevent, \ 373 &g_raid_tr_##name##_class \ 374 }; \ 375 DECLARE_MODULE(g_raid_tr_##name, g_raid_tr_##name##_mod, \ 376 SI_SUB_DRIVERS, SI_ORDER_FIRST); \ 377 MODULE_DEPEND(g_raid_tr_##name, geom_raid, 0, 0, 0); \ 378 SYSCTL_NODE(_kern_geom_raid, OID_AUTO, name, \ 379 CTLFLAG_RD | CTLFLAG_MPSAFE, \ 380 NULL, label " transformation module"); \ 381 SYSCTL_INT(_kern_geom_raid_##name, OID_AUTO, enable, \ 382 CTLFLAG_RWTUN, &g_raid_tr_##name##_class.trc_enable, 0, \ 383 "Enable " label " transformation module taste") 384 385 const char * g_raid_volume_level2str(int level, int qual); 386 int g_raid_volume_str2level(const char *str, int *level, int *qual); 387 const char * g_raid_volume_state2str(int state); 388 const char * g_raid_subdisk_state2str(int state); 389 const char * g_raid_disk_state2str(int state); 390 391 struct g_raid_softc * g_raid_create_node(struct g_class *mp, 392 const char *name, struct g_raid_md_object *md); 393 int g_raid_create_node_format(const char *format, struct gctl_req *req, 394 struct g_geom **gp); 395 struct g_raid_volume * g_raid_create_volume(struct g_raid_softc *sc, 396 const char *name, int id); 397 struct g_raid_disk * g_raid_create_disk(struct g_raid_softc *sc); 398 const char * g_raid_get_diskname(struct g_raid_disk *disk); 399 void g_raid_get_disk_info(struct g_raid_disk *disk); 400 401 int g_raid_start_volume(struct g_raid_volume *vol); 402 403 int g_raid_destroy_node(struct g_raid_softc *sc, int worker); 404 int g_raid_destroy_volume(struct g_raid_volume *vol); 405 int g_raid_destroy_disk(struct g_raid_disk *disk); 406 407 void g_raid_iodone(struct bio *bp, int error); 408 void g_raid_subdisk_iostart(struct g_raid_subdisk *sd, struct bio *bp); 409 int g_raid_subdisk_kerneldump(struct g_raid_subdisk *sd, 410 void *virtual, vm_offset_t physical, off_t offset, size_t length); 411 412 struct g_consumer *g_raid_open_consumer(struct g_raid_softc *sc, 413 const char *name); 414 void g_raid_kill_consumer(struct g_raid_softc *sc, struct g_consumer *cp); 415 416 void g_raid_report_disk_state(struct g_raid_disk *disk); 417 void g_raid_change_disk_state(struct g_raid_disk *disk, int state); 418 void g_raid_change_subdisk_state(struct g_raid_subdisk *sd, int state); 419 void g_raid_change_volume_state(struct g_raid_volume *vol, int state); 420 421 void g_raid_write_metadata(struct g_raid_softc *sc, struct g_raid_volume *vol, 422 struct g_raid_subdisk *sd, struct g_raid_disk *disk); 423 void g_raid_fail_disk(struct g_raid_softc *sc, 424 struct g_raid_subdisk *sd, struct g_raid_disk *disk); 425 426 void g_raid_tr_flush_common(struct g_raid_tr_object *tr, struct bio *bp); 427 int g_raid_tr_kerneldump_common(struct g_raid_tr_object *tr, 428 void *virtual, vm_offset_t physical, off_t offset, size_t length); 429 430 u_int g_raid_ndisks(struct g_raid_softc *sc, int state); 431 u_int g_raid_nsubdisks(struct g_raid_volume *vol, int state); 432 u_int g_raid_nopens(struct g_raid_softc *sc); 433 struct g_raid_subdisk * g_raid_get_subdisk(struct g_raid_volume *vol, 434 int state); 435 #define G_RAID_DESTROY_SOFT 0 436 #define G_RAID_DESTROY_DELAYED 1 437 #define G_RAID_DESTROY_HARD 2 438 int g_raid_destroy(struct g_raid_softc *sc, int how); 439 int g_raid_event_send(void *arg, int event, int flags); 440 int g_raid_lock_range(struct g_raid_volume *vol, off_t off, off_t len, 441 struct bio *ignore, void *argp); 442 int g_raid_unlock_range(struct g_raid_volume *vol, off_t off, off_t len); 443 444 g_ctl_req_t g_raid_ctl; 445 #endif /* _KERNEL */ 446 447 #endif /* !_G_RAID_H_ */ 448