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 48struct g_raid_md_object; 49struct 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 57extern u_int g_raid_aggressive_spare; 58extern u_int g_raid_debug; 59extern int g_raid_enable; 60extern int g_raid_read_err_thresh; 61extern u_int g_raid_start_timeout; 62extern struct g_class g_raid_class; 63 64#define G_RAID_DEBUG(lvl, fmt, ...) do { \ 65 if (g_raid_debug >= (lvl)) { \ 66 if (g_raid_debug > 0) { \ 67 printf("GEOM_RAID[%u]: " fmt "\n", \ 68 lvl, ## __VA_ARGS__); \ 69 } else { \ 70 printf("GEOM_RAID: " fmt "\n", \ 71 ## __VA_ARGS__); \ 72 } \ 73 } \ 74} while (0) 75#define G_RAID_DEBUG1(lvl, sc, fmt, ...) do { \ 76 if (g_raid_debug >= (lvl)) { \ 77 if (g_raid_debug > 0) { \ 78 printf("GEOM_RAID[%u]: %s: " fmt "\n", \ 79 lvl, (sc)->sc_name, ## __VA_ARGS__); \ 80 } else { \ 81 printf("GEOM_RAID: %s: " fmt "\n", \ 82 (sc)->sc_name, ## __VA_ARGS__); \ 83 } \ 84 } \ 85} while (0) 86#define G_RAID_LOGREQ(lvl, bp, fmt, ...) do { \ 87 if (g_raid_debug >= (lvl)) { \ 88 if (g_raid_debug > 0) { \ 89 printf("GEOM_RAID[%u]: " fmt " ", \ 90 lvl, ## __VA_ARGS__); \ 91 } else \ 92 printf("GEOM_RAID: " fmt " ", ## __VA_ARGS__); \ 93 g_print_bio(bp); \ 94 printf("\n"); \ 95 } \ 96} while (0) 97 98/* 99 * Flags we use to distinguish I/O initiated by the TR layer to maintain 100 * the volume's characteristics, fix subdisks, extra copies of data, etc. 101 * 102 * G_RAID_BIO_FLAG_SYNC I/O to update an extra copy of the data 103 * for RAID volumes that maintain extra data 104 * and need to rebuild that data. 105 * G_RAID_BIO_FLAG_REMAP I/O done to try to provoke a subdisk into 106 * doing some desirable action such as bad 107 * block remapping after we detect a bad part 108 * of the disk. 109 * G_RAID_BIO_FLAG_LOCKED I/O holds range lock that should re released. 110 * 111 * and the following meta item: 112 * G_RAID_BIO_FLAG_SPECIAL And of the I/O flags that need to make it 113 * through the range locking which would 114 * otherwise defer the I/O until after that 115 * range is unlocked. 116 */ 117#define G_RAID_BIO_FLAG_SYNC 0x01 118#define G_RAID_BIO_FLAG_REMAP 0x02 119#define G_RAID_BIO_FLAG_SPECIAL \ 120 (G_RAID_BIO_FLAG_SYNC|G_RAID_BIO_FLAG_REMAP) 121#define G_RAID_BIO_FLAG_LOCKED 0x80 122 123struct g_raid_lock { 124 off_t l_offset; 125 off_t l_length; 126 void *l_callback_arg; 127 int l_pending; 128 LIST_ENTRY(g_raid_lock) l_next; 129}; 130 131#define G_RAID_EVENT_WAIT 0x01 132#define G_RAID_EVENT_VOLUME 0x02 133#define G_RAID_EVENT_SUBDISK 0x04 134#define G_RAID_EVENT_DISK 0x08 135#define G_RAID_EVENT_DONE 0x10 136struct g_raid_event { 137 void *e_tgt; 138 int e_event; 139 int e_flags; 140 int e_error; 141 TAILQ_ENTRY(g_raid_event) e_next; 142}; 143#define G_RAID_DISK_S_NONE 0x00 /* State is unknown. */ 144#define G_RAID_DISK_S_OFFLINE 0x01 /* Missing disk placeholder. */ 145#define G_RAID_DISK_S_DISABLED 0x02 /* Disabled. */ 146#define G_RAID_DISK_S_FAILED 0x03 /* Failed. */ 147#define G_RAID_DISK_S_STALE_FAILED 0x04 /* Old failed. */ 148#define G_RAID_DISK_S_SPARE 0x05 /* Hot-spare. */ 149#define G_RAID_DISK_S_STALE 0x06 /* Old disk, unused now. */ 150#define G_RAID_DISK_S_ACTIVE 0x07 /* Operational. */ 151 152#define G_RAID_DISK_E_DISCONNECTED 0x01 153 154struct g_raid_disk { 155 struct g_raid_softc *d_softc; /* Back-pointer to softc. */ 156 struct g_consumer *d_consumer; /* GEOM disk consumer. */ 157 void *d_md_data; /* Disk's metadata storage. */ 158 struct g_kerneldump d_kd; /* Kernel dumping method/args. */ 159 int d_candelete; /* BIO_DELETE supported. */ 160 uint64_t d_flags; /* Additional flags. */ 161 u_int d_state; /* Disk state. */ 162 u_int d_load; /* Disk average load. */ 163 off_t d_last_offset; /* Last head offset. */ 164 int d_read_errs; /* Count of the read errors */ 165 TAILQ_HEAD(, g_raid_subdisk) d_subdisks; /* List of subdisks. */ 166 TAILQ_ENTRY(g_raid_disk) d_next; /* Next disk in the node. */ 167}; 168 169#define G_RAID_SUBDISK_S_NONE 0x00 /* Absent. */ 170#define G_RAID_SUBDISK_S_FAILED 0x01 /* Failed. */ 171#define G_RAID_SUBDISK_S_NEW 0x02 /* Blank. */ 172#define G_RAID_SUBDISK_S_REBUILD 0x03 /* Blank + rebuild. */ 173#define G_RAID_SUBDISK_S_UNINITIALIZED 0x04 /* Disk of the new volume. */ 174#define G_RAID_SUBDISK_S_STALE 0x05 /* Dirty. */ 175#define G_RAID_SUBDISK_S_RESYNC 0x06 /* Dirty + check/repair. */ 176#define G_RAID_SUBDISK_S_ACTIVE 0x07 /* Usable. */ 177 178#define G_RAID_SUBDISK_E_NEW 0x01 /* A new subdisk has arrived */ 179#define G_RAID_SUBDISK_E_FAILED 0x02 /* A subdisk failed, but remains in volume */ 180#define G_RAID_SUBDISK_E_DISCONNECTED 0x03 /* A subdisk removed from volume. */ 181#define G_RAID_SUBDISK_E_FIRST_TR_PRIVATE 0x80 /* translation private events */ 182 183#define G_RAID_SUBDISK_POS(sd) \ 184 ((sd)->sd_disk ? ((sd)->sd_disk->d_last_offset - (sd)->sd_offset) : 0) 185#define G_RAID_SUBDISK_TRACK_SIZE (1 * 1024 * 1024) 186#define G_RAID_SUBDISK_LOAD(sd) \ 187 ((sd)->sd_disk ? ((sd)->sd_disk->d_load) : 0) 188#define G_RAID_SUBDISK_LOAD_SCALE 256 189 190struct g_raid_subdisk { 191 struct g_raid_softc *sd_softc; /* Back-pointer to softc. */ 192 struct g_raid_disk *sd_disk; /* Where this subdisk lives. */ 193 struct g_raid_volume *sd_volume; /* Volume, sd is a part of. */ 194 off_t sd_offset; /* Offset on the disk. */ 195 off_t sd_size; /* Size on the disk. */ 196 u_int sd_pos; /* Position in volume. */ 197 u_int sd_state; /* Subdisk state. */ 198 off_t sd_rebuild_pos; /* Rebuild position. */ 199 int sd_recovery; /* Count of recovery reqs. */ 200 TAILQ_ENTRY(g_raid_subdisk) sd_next; /* Next subdisk on disk. */ 201}; 202 203#define G_RAID_MAX_SUBDISKS 16 204#define G_RAID_MAX_VOLUMENAME 32 205 206#define G_RAID_VOLUME_S_STARTING 0x00 207#define G_RAID_VOLUME_S_BROKEN 0x01 208#define G_RAID_VOLUME_S_DEGRADED 0x02 209#define G_RAID_VOLUME_S_SUBOPTIMAL 0x03 210#define G_RAID_VOLUME_S_OPTIMAL 0x04 211#define G_RAID_VOLUME_S_UNSUPPORTED 0x05 212#define G_RAID_VOLUME_S_STOPPED 0x06 213 214#define G_RAID_VOLUME_S_ALIVE(s) \ 215 ((s) == G_RAID_VOLUME_S_DEGRADED || \ 216 (s) == G_RAID_VOLUME_S_SUBOPTIMAL || \ 217 (s) == G_RAID_VOLUME_S_OPTIMAL) 218 219#define G_RAID_VOLUME_E_DOWN 0x00 220#define G_RAID_VOLUME_E_UP 0x01 221#define G_RAID_VOLUME_E_START 0x10 222#define G_RAID_VOLUME_E_STARTMD 0x11 223 224#define G_RAID_VOLUME_RL_RAID0 0x00 225#define G_RAID_VOLUME_RL_RAID1 0x01 226#define G_RAID_VOLUME_RL_RAID3 0x03 227#define G_RAID_VOLUME_RL_RAID4 0x04 228#define G_RAID_VOLUME_RL_RAID5 0x05 229#define G_RAID_VOLUME_RL_RAID6 0x06 230#define G_RAID_VOLUME_RL_RAIDMDF 0x07 231#define G_RAID_VOLUME_RL_RAID1E 0x11 232#define G_RAID_VOLUME_RL_SINGLE 0x0f 233#define G_RAID_VOLUME_RL_CONCAT 0x1f 234#define G_RAID_VOLUME_RL_RAID5E 0x15 235#define G_RAID_VOLUME_RL_RAID5EE 0x25 236#define G_RAID_VOLUME_RL_RAID5R 0x35 237#define G_RAID_VOLUME_RL_UNKNOWN 0xff 238 239#define G_RAID_VOLUME_RLQ_NONE 0x00 240#define G_RAID_VOLUME_RLQ_R1SM 0x00 241#define G_RAID_VOLUME_RLQ_R1MM 0x01 242#define G_RAID_VOLUME_RLQ_R3P0 0x00 243#define G_RAID_VOLUME_RLQ_R3PN 0x01 244#define G_RAID_VOLUME_RLQ_R4P0 0x00 245#define G_RAID_VOLUME_RLQ_R4PN 0x01 246#define G_RAID_VOLUME_RLQ_R5RA 0x00 247#define G_RAID_VOLUME_RLQ_R5RS 0x01 248#define G_RAID_VOLUME_RLQ_R5LA 0x02 249#define G_RAID_VOLUME_RLQ_R5LS 0x03 250#define G_RAID_VOLUME_RLQ_R6RA 0x00 251#define G_RAID_VOLUME_RLQ_R6RS 0x01 252#define G_RAID_VOLUME_RLQ_R6LA 0x02 253#define G_RAID_VOLUME_RLQ_R6LS 0x03 254#define G_RAID_VOLUME_RLQ_RMDFRA 0x00 255#define G_RAID_VOLUME_RLQ_RMDFRS 0x01 256#define G_RAID_VOLUME_RLQ_RMDFLA 0x02 257#define G_RAID_VOLUME_RLQ_RMDFLS 0x03 258#define G_RAID_VOLUME_RLQ_R1EA 0x00 259#define G_RAID_VOLUME_RLQ_R1EO 0x01 260#define G_RAID_VOLUME_RLQ_R5ERA 0x00 261#define G_RAID_VOLUME_RLQ_R5ERS 0x01 262#define G_RAID_VOLUME_RLQ_R5ELA 0x02 263#define G_RAID_VOLUME_RLQ_R5ELS 0x03 264#define G_RAID_VOLUME_RLQ_R5EERA 0x00 265#define G_RAID_VOLUME_RLQ_R5EERS 0x01 266#define G_RAID_VOLUME_RLQ_R5EELA 0x02 267#define G_RAID_VOLUME_RLQ_R5EELS 0x03 268#define G_RAID_VOLUME_RLQ_R5RRA 0x00 269#define G_RAID_VOLUME_RLQ_R5RRS 0x01 270#define G_RAID_VOLUME_RLQ_R5RLA 0x02 271#define G_RAID_VOLUME_RLQ_R5RLS 0x03 272#define G_RAID_VOLUME_RLQ_UNKNOWN 0xff 273 274struct g_raid_volume; 275 276struct g_raid_volume { 277 struct g_raid_softc *v_softc; /* Back-pointer to softc. */ 278 struct g_provider *v_provider; /* GEOM provider. */ 279 struct g_raid_subdisk v_subdisks[G_RAID_MAX_SUBDISKS]; 280 /* Subdisks of this volume. */ 281 void *v_md_data; /* Volume's metadata storage. */ 282 struct g_raid_tr_object *v_tr; /* Transformation object. */ 283 char v_name[G_RAID_MAX_VOLUMENAME]; 284 /* Volume name. */ 285 u_int v_state; /* Volume state. */ 286 u_int v_raid_level; /* Array RAID level. */ 287 u_int v_raid_level_qualifier; /* RAID level det. */ 288 u_int v_disks_count; /* Number of disks in array. */ 289 u_int v_mdf_pdisks; /* Number of parity disks 290 in RAIDMDF array. */ 291 uint16_t v_mdf_polynomial; /* Polynomial for RAIDMDF. */ 292 uint8_t v_mdf_method; /* Generation method for RAIDMDF. */ 293 u_int v_strip_size; /* Array strip size. */ 294 u_int v_rotate_parity; /* Rotate RAID5R parity 295 after numer of stripes. */ 296 u_int v_sectorsize; /* Volume sector size. */ 297 off_t v_mediasize; /* Volume media size. */ 298 struct bio_queue_head v_inflight; /* In-flight write requests. */ 299 struct bio_queue_head v_locked; /* Blocked I/O requests. */ 300 LIST_HEAD(, g_raid_lock) v_locks; /* List of locked regions. */ 301 int v_pending_lock; /* writes to locked region */ 302 int v_dirty; /* Volume is DIRTY. */ 303 struct timeval v_last_done; /* Time of the last I/O. */ 304 time_t v_last_write; /* Time of the last write. */ 305 u_int v_writes; /* Number of active writes. */ 306 struct root_hold_token *v_rootmount; /* Root mount delay token. */ 307 int v_starting; /* Volume is starting */ 308 int v_stopping; /* Volume is stopping */ 309 int v_provider_open; /* Number of opens. */ 310 int v_global_id; /* Global volume ID (rX). */ 311 int v_read_only; /* Volume is read-only. */ 312 TAILQ_ENTRY(g_raid_volume) v_next; /* List of volumes entry. */ 313 LIST_ENTRY(g_raid_volume) v_global_next; /* Global list entry. */ 314}; 315 316#define G_RAID_NODE_E_WAKE 0x00 317#define G_RAID_NODE_E_START 0x01 318 319struct g_raid_softc { 320 struct g_raid_md_object *sc_md; /* Metadata object. */ 321 struct g_geom *sc_geom; /* GEOM class instance. */ 322 uint64_t sc_flags; /* Additional flags. */ 323 TAILQ_HEAD(, g_raid_volume) sc_volumes; /* List of volumes. */ 324 TAILQ_HEAD(, g_raid_disk) sc_disks; /* List of disks. */ 325 struct sx sc_lock; /* Main node lock. */ 326 struct proc *sc_worker; /* Worker process. */ 327 struct mtx sc_queue_mtx; /* Worker queues lock. */ 328 TAILQ_HEAD(, g_raid_event) sc_events; /* Worker events queue. */ 329 struct bio_queue_head sc_queue; /* Worker I/O queue. */ 330 int sc_stopping; /* Node is stopping */ 331}; 332#define sc_name sc_geom->name 333 334SYSCTL_DECL(_kern_geom_raid); 335 336/* 337 * KOBJ parent class of metadata processing modules. 338 */ 339struct g_raid_md_class { 340 KOBJ_CLASS_FIELDS; 341 int mdc_enable; 342 int mdc_priority; 343 LIST_ENTRY(g_raid_md_class) mdc_list; 344}; 345 346/* 347 * KOBJ instance of metadata processing module. 348 */ 349struct g_raid_md_object { 350 KOBJ_FIELDS; 351 struct g_raid_md_class *mdo_class; 352 struct g_raid_softc *mdo_softc; /* Back-pointer to softc. */ 353}; 354 355int g_raid_md_modevent(module_t, int, void *); 356 357#define G_RAID_MD_DECLARE(name, label) \ 358 static moduledata_t g_raid_md_##name##_mod = { \ 359 "g_raid_md_" __XSTRING(name), \ 360 g_raid_md_modevent, \ 361 &g_raid_md_##name##_class \ 362 }; \ 363 DECLARE_MODULE(g_raid_md_##name, g_raid_md_##name##_mod, \ 364 SI_SUB_DRIVERS, SI_ORDER_SECOND); \ 365 MODULE_DEPEND(g_raid_md_##name, geom_raid, 0, 0, 0); \ 366 SYSCTL_NODE(_kern_geom_raid, OID_AUTO, name, CTLFLAG_RD, \ 367 NULL, label " metadata module"); \ 368 SYSCTL_INT(_kern_geom_raid_##name, OID_AUTO, enable, \ 369 CTLFLAG_RWTUN, &g_raid_md_##name##_class.mdc_enable, 0, \ 370 "Enable " label " metadata format taste") 371 372/* 373 * KOBJ parent class of data transformation modules. 374 */ 375struct g_raid_tr_class { 376 KOBJ_CLASS_FIELDS; 377 int trc_enable; 378 int trc_priority; 379 int trc_accept_unmapped; 380 LIST_ENTRY(g_raid_tr_class) trc_list; 381}; 382 383/* 384 * KOBJ instance of data transformation module. 385 */ 386struct g_raid_tr_object { 387 KOBJ_FIELDS; 388 struct g_raid_tr_class *tro_class; 389 struct g_raid_volume *tro_volume; /* Back-pointer to volume. */ 390}; 391 392int g_raid_tr_modevent(module_t, int, void *); 393 394#define G_RAID_TR_DECLARE(name, label) \ 395 static moduledata_t g_raid_tr_##name##_mod = { \ 396 "g_raid_tr_" __XSTRING(name), \ 397 g_raid_tr_modevent, \ 398 &g_raid_tr_##name##_class \ 399 }; \ 400 DECLARE_MODULE(g_raid_tr_##name, g_raid_tr_##name##_mod, \ 401 SI_SUB_DRIVERS, SI_ORDER_FIRST); \ 402 MODULE_DEPEND(g_raid_tr_##name, geom_raid, 0, 0, 0); \ 403 SYSCTL_NODE(_kern_geom_raid, OID_AUTO, name, CTLFLAG_RD, \ 404 NULL, label " transformation module"); \ 405 SYSCTL_INT(_kern_geom_raid_##name, OID_AUTO, enable, \ 406 CTLFLAG_RWTUN, &g_raid_tr_##name##_class.trc_enable, 0, \ 407 "Enable " label " transformation module taste") 408 409const char * g_raid_volume_level2str(int level, int qual); 410int g_raid_volume_str2level(const char *str, int *level, int *qual); 411const char * g_raid_volume_state2str(int state); 412const char * g_raid_subdisk_state2str(int state); 413const char * g_raid_disk_state2str(int state); 414 415struct g_raid_softc * g_raid_create_node(struct g_class *mp, 416 const char *name, struct g_raid_md_object *md); 417int g_raid_create_node_format(const char *format, struct gctl_req *req, 418 struct g_geom **gp); 419struct g_raid_volume * g_raid_create_volume(struct g_raid_softc *sc, 420 const char *name, int id); 421struct g_raid_disk * g_raid_create_disk(struct g_raid_softc *sc); 422const char * g_raid_get_diskname(struct g_raid_disk *disk); 423void g_raid_get_disk_info(struct g_raid_disk *disk); 424 425int g_raid_start_volume(struct g_raid_volume *vol); 426 427int g_raid_destroy_node(struct g_raid_softc *sc, int worker); 428int g_raid_destroy_volume(struct g_raid_volume *vol); 429int g_raid_destroy_disk(struct g_raid_disk *disk); 430 431void g_raid_iodone(struct bio *bp, int error); 432void g_raid_subdisk_iostart(struct g_raid_subdisk *sd, struct bio *bp); 433int g_raid_subdisk_kerneldump(struct g_raid_subdisk *sd, 434 void *virtual, vm_offset_t physical, off_t offset, size_t length); 435 436struct g_consumer *g_raid_open_consumer(struct g_raid_softc *sc, 437 const char *name); 438void g_raid_kill_consumer(struct g_raid_softc *sc, struct g_consumer *cp); 439 440void g_raid_report_disk_state(struct g_raid_disk *disk); 441void g_raid_change_disk_state(struct g_raid_disk *disk, int state); 442void g_raid_change_subdisk_state(struct g_raid_subdisk *sd, int state); 443void g_raid_change_volume_state(struct g_raid_volume *vol, int state); 444 445void g_raid_write_metadata(struct g_raid_softc *sc, struct g_raid_volume *vol, 446 struct g_raid_subdisk *sd, struct g_raid_disk *disk); 447void g_raid_fail_disk(struct g_raid_softc *sc, 448 struct g_raid_subdisk *sd, struct g_raid_disk *disk); 449 450void g_raid_tr_flush_common(struct g_raid_tr_object *tr, struct bio *bp); 451int g_raid_tr_kerneldump_common(struct g_raid_tr_object *tr, 452 void *virtual, vm_offset_t physical, off_t offset, size_t length); 453 454u_int g_raid_ndisks(struct g_raid_softc *sc, int state); 455u_int g_raid_nsubdisks(struct g_raid_volume *vol, int state); 456u_int g_raid_nopens(struct g_raid_softc *sc); 457struct g_raid_subdisk * g_raid_get_subdisk(struct g_raid_volume *vol, 458 int state); 459#define G_RAID_DESTROY_SOFT 0 460#define G_RAID_DESTROY_DELAYED 1 461#define G_RAID_DESTROY_HARD 2 462int g_raid_destroy(struct g_raid_softc *sc, int how); 463int g_raid_event_send(void *arg, int event, int flags); 464int g_raid_lock_range(struct g_raid_volume *vol, off_t off, off_t len, 465 struct bio *ignore, void *argp); 466int g_raid_unlock_range(struct g_raid_volume *vol, off_t off, off_t len); 467 468g_ctl_req_t g_raid_ctl; 469#endif /* _KERNEL */ 470 471#endif /* !_G_RAID_H_ */ 472