1132904Spjd/*- 2156878Spjd * Copyright (c) 2004-2006 Pawel Jakub Dawidek <pjd@FreeBSD.org> 3132904Spjd * All rights reserved. 4132904Spjd * 5132904Spjd * Redistribution and use in source and binary forms, with or without 6132904Spjd * modification, are permitted provided that the following conditions 7132904Spjd * are met: 8132904Spjd * 1. Redistributions of source code must retain the above copyright 9132904Spjd * notice, this list of conditions and the following disclaimer. 10132904Spjd * 2. Redistributions in binary form must reproduce the above copyright 11132904Spjd * notice, this list of conditions and the following disclaimer in the 12132904Spjd * documentation and/or other materials provided with the distribution. 13155174Spjd * 14132904Spjd * THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND 15132904Spjd * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16132904Spjd * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17132904Spjd * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE 18132904Spjd * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19132904Spjd * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20132904Spjd * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21132904Spjd * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22132904Spjd * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23132904Spjd * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24132904Spjd * SUCH DAMAGE. 25132904Spjd * 26132904Spjd * $FreeBSD: stable/11/sys/geom/mirror/g_mirror.h 328086 2018-01-17 15:12:52Z markj $ 27132904Spjd */ 28132904Spjd 29132904Spjd#ifndef _G_MIRROR_H_ 30132904Spjd#define _G_MIRROR_H_ 31132904Spjd 32132904Spjd#include <sys/endian.h> 33132904Spjd#include <sys/md5.h> 34132904Spjd 35132904Spjd#define G_MIRROR_CLASS_NAME "MIRROR" 36132904Spjd 37132904Spjd#define G_MIRROR_MAGIC "GEOM::MIRROR" 38139213Spjd/* 39139213Spjd * Version history: 40139213Spjd * 0 - Initial version number. 41139213Spjd * 1 - Added 'prefer' balance algorithm. 42139213Spjd * 2 - Added md_genid field to metadata. 43142727Spjd * 3 - Added md_provsize field to metadata. 44163888Spjd * 4 - Added 'no failure synchronization' flag. 45139213Spjd */ 46163888Spjd#define G_MIRROR_VERSION 4 47132904Spjd 48132904Spjd#define G_MIRROR_BALANCE_NONE 0 49132904Spjd#define G_MIRROR_BALANCE_ROUND_ROBIN 1 50132904Spjd#define G_MIRROR_BALANCE_LOAD 2 51132904Spjd#define G_MIRROR_BALANCE_SPLIT 3 52133115Spjd#define G_MIRROR_BALANCE_PREFER 4 53132904Spjd#define G_MIRROR_BALANCE_MIN G_MIRROR_BALANCE_NONE 54133115Spjd#define G_MIRROR_BALANCE_MAX G_MIRROR_BALANCE_PREFER 55132904Spjd 56132904Spjd#define G_MIRROR_DISK_FLAG_DIRTY 0x0000000000000001ULL 57132904Spjd#define G_MIRROR_DISK_FLAG_SYNCHRONIZING 0x0000000000000002ULL 58132904Spjd#define G_MIRROR_DISK_FLAG_FORCE_SYNC 0x0000000000000004ULL 59132904Spjd#define G_MIRROR_DISK_FLAG_INACTIVE 0x0000000000000008ULL 60133373Spjd#define G_MIRROR_DISK_FLAG_HARDCODED 0x0000000000000010ULL 61155545Spjd#define G_MIRROR_DISK_FLAG_BROKEN 0x0000000000000020ULL 62237930Sglebius#define G_MIRROR_DISK_FLAG_CANDELETE 0x0000000000000040ULL 63328086Smarkj 64328086Smarkj/* Per-disk flags which are recorded in on-disk metadata. */ 65132904Spjd#define G_MIRROR_DISK_FLAG_MASK (G_MIRROR_DISK_FLAG_DIRTY | \ 66132904Spjd G_MIRROR_DISK_FLAG_SYNCHRONIZING | \ 67132904Spjd G_MIRROR_DISK_FLAG_FORCE_SYNC | \ 68237930Sglebius G_MIRROR_DISK_FLAG_INACTIVE | \ 69237930Sglebius G_MIRROR_DISK_FLAG_CANDELETE) 70132904Spjd 71132904Spjd#define G_MIRROR_DEVICE_FLAG_NOAUTOSYNC 0x0000000000000001ULL 72163888Spjd#define G_MIRROR_DEVICE_FLAG_NOFAILSYNC 0x0000000000000002ULL 73328086Smarkj 74328086Smarkj/* Mirror flags which are recorded in on-disk metadata. */ 75163888Spjd#define G_MIRROR_DEVICE_FLAG_MASK (G_MIRROR_DEVICE_FLAG_NOAUTOSYNC | \ 76163888Spjd G_MIRROR_DEVICE_FLAG_NOFAILSYNC) 77132904Spjd 78132904Spjd#ifdef _KERNEL 79326530Smarkjextern int g_mirror_debug; 80132904Spjd 81132904Spjd#define G_MIRROR_DEBUG(lvl, ...) do { \ 82132904Spjd if (g_mirror_debug >= (lvl)) { \ 83132904Spjd printf("GEOM_MIRROR"); \ 84132904Spjd if (g_mirror_debug > 0) \ 85132904Spjd printf("[%u]", lvl); \ 86132904Spjd printf(": "); \ 87132904Spjd printf(__VA_ARGS__); \ 88132904Spjd printf("\n"); \ 89132904Spjd } \ 90132904Spjd} while (0) 91132904Spjd#define G_MIRROR_LOGREQ(lvl, bp, ...) do { \ 92132904Spjd if (g_mirror_debug >= (lvl)) { \ 93132904Spjd printf("GEOM_MIRROR"); \ 94132904Spjd if (g_mirror_debug > 0) \ 95132904Spjd printf("[%u]", lvl); \ 96132904Spjd printf(": "); \ 97132904Spjd printf(__VA_ARGS__); \ 98132904Spjd printf(" "); \ 99132904Spjd g_print_bio(bp); \ 100132904Spjd printf("\n"); \ 101132904Spjd } \ 102132904Spjd} while (0) 103132904Spjd 104133142Spjd#define G_MIRROR_BIO_FLAG_REGULAR 0x01 105133142Spjd#define G_MIRROR_BIO_FLAG_SYNC 0x02 106133142Spjd 107132904Spjd/* 108132904Spjd * Informations needed for synchronization. 109132904Spjd */ 110132904Spjdstruct g_mirror_disk_sync { 111132904Spjd struct g_consumer *ds_consumer; /* Consumer connected to our mirror. */ 112156610Spjd off_t ds_offset; /* Offset of next request to send. */ 113156610Spjd off_t ds_offset_done; /* Offset of already synchronized 114132904Spjd region. */ 115327070Smarkj time_t ds_update_ts; /* Time of last metadata update. */ 116156610Spjd u_int ds_syncid; /* Disk's synchronization ID. */ 117156610Spjd u_int ds_inflight; /* Number of in-flight sync requests. */ 118156610Spjd struct bio **ds_bios; /* BIOs for synchronization I/O. */ 119132904Spjd}; 120132904Spjd 121132904Spjd/* 122132904Spjd * Informations needed for synchronization. 123132904Spjd */ 124132904Spjdstruct g_mirror_device_sync { 125132904Spjd struct g_geom *ds_geom; /* Synchronization geom. */ 126132904Spjd u_int ds_ndisks; /* Number of disks in SYNCHRONIZING 127132904Spjd state. */ 128132904Spjd}; 129132904Spjd 130132904Spjd#define G_MIRROR_DISK_STATE_NONE 0 131132904Spjd#define G_MIRROR_DISK_STATE_NEW 1 132132904Spjd#define G_MIRROR_DISK_STATE_ACTIVE 2 133132904Spjd#define G_MIRROR_DISK_STATE_STALE 3 134132904Spjd#define G_MIRROR_DISK_STATE_SYNCHRONIZING 4 135132904Spjd#define G_MIRROR_DISK_STATE_DISCONNECTED 5 136132904Spjd#define G_MIRROR_DISK_STATE_DESTROY 6 137132904Spjdstruct g_mirror_disk { 138132904Spjd uint32_t d_id; /* Disk ID. */ 139132904Spjd struct g_consumer *d_consumer; /* Consumer. */ 140132904Spjd struct g_mirror_softc *d_softc; /* Back-pointer to softc. */ 141132904Spjd int d_state; /* Disk state. */ 142132904Spjd u_int d_priority; /* Disk priority. */ 143200086Smav u_int load; /* Averaged queue length */ 144200086Smav off_t d_last_offset; /* Last read offset */ 145132904Spjd uint64_t d_flags; /* Additional flags. */ 146139213Spjd u_int d_genid; /* Disk's generation ID. */ 147132904Spjd struct g_mirror_disk_sync d_sync;/* Sync information. */ 148132904Spjd LIST_ENTRY(g_mirror_disk) d_next; 149132904Spjd}; 150132904Spjd#define d_name d_consumer->provider->name 151132904Spjd 152132904Spjd#define G_MIRROR_EVENT_DONTWAIT 0x1 153132904Spjd#define G_MIRROR_EVENT_WAIT 0x2 154132904Spjd#define G_MIRROR_EVENT_DEVICE 0x4 155132904Spjd#define G_MIRROR_EVENT_DONE 0x8 156132904Spjdstruct g_mirror_event { 157132904Spjd struct g_mirror_disk *e_disk; 158132904Spjd int e_state; 159132904Spjd int e_flags; 160132904Spjd int e_error; 161132904Spjd TAILQ_ENTRY(g_mirror_event) e_next; 162132904Spjd}; 163132904Spjd 164132904Spjd#define G_MIRROR_DEVICE_FLAG_DESTROY 0x0100000000000000ULL 165326696Smarkj#define G_MIRROR_DEVICE_FLAG_DRAIN 0x0200000000000000ULL 166326696Smarkj#define G_MIRROR_DEVICE_FLAG_CLOSEWAIT 0x0400000000000000ULL 167235599Sae#define G_MIRROR_DEVICE_FLAG_TASTING 0x0800000000000000ULL 168259929Sae#define G_MIRROR_DEVICE_FLAG_WIPE 0x1000000000000000ULL 169132904Spjd 170132904Spjd#define G_MIRROR_DEVICE_STATE_STARTING 0 171132904Spjd#define G_MIRROR_DEVICE_STATE_RUNNING 1 172132904Spjd 173318752Smav#define G_MIRROR_TYPE_MANUAL 0 174318752Smav#define G_MIRROR_TYPE_AUTOMATIC 1 175318752Smav 176139213Spjd/* Bump syncid on first write. */ 177324588Savg#define G_MIRROR_BUMP_SYNCID 0x1 178139213Spjd/* Bump genid immediately. */ 179324588Savg#define G_MIRROR_BUMP_GENID 0x2 180324588Savg/* Bump syncid immediately. */ 181324588Savg#define G_MIRROR_BUMP_SYNCID_NOW 0x4 182132904Spjdstruct g_mirror_softc { 183318752Smav u_int sc_type; /* Device type (manual/automatic). */ 184132904Spjd u_int sc_state; /* Device state. */ 185132904Spjd uint32_t sc_slice; /* Slice size. */ 186132904Spjd uint8_t sc_balance; /* Balance algorithm. */ 187132904Spjd uint64_t sc_mediasize; /* Device size. */ 188132904Spjd uint32_t sc_sectorsize; /* Sector size. */ 189132904Spjd uint64_t sc_flags; /* Additional flags. */ 190132904Spjd 191132904Spjd struct g_geom *sc_geom; 192132904Spjd struct g_provider *sc_provider; 193307665Smav int sc_provider_open; 194132904Spjd 195132904Spjd uint32_t sc_id; /* Mirror unique ID. */ 196132904Spjd 197156610Spjd struct sx sc_lock; 198327493Smarkj struct bio_queue sc_queue; 199132904Spjd struct mtx sc_queue_mtx; 200132904Spjd struct proc *sc_worker; 201327493Smarkj struct bio_queue sc_inflight; /* In-flight regular write requests. */ 202327493Smarkj struct bio_queue sc_regular_delayed; /* Delayed I/O requests due to 203327493Smarkj collision with sync requests. */ 204327493Smarkj struct bio_queue sc_sync_delayed; /* Delayed sync requests due to 205327493Smarkj collision with regular requests. */ 206132904Spjd 207132904Spjd LIST_HEAD(, g_mirror_disk) sc_disks; 208132904Spjd u_int sc_ndisks; /* Number of disks. */ 209132904Spjd struct g_mirror_disk *sc_hint; 210132904Spjd 211139213Spjd u_int sc_genid; /* Generation ID. */ 212132904Spjd u_int sc_syncid; /* Synchronization ID. */ 213139213Spjd int sc_bump_id; 214132904Spjd struct g_mirror_device_sync sc_sync; 215137248Spjd int sc_idle; /* DIRTY flags removed. */ 216155539Spjd time_t sc_last_write; 217155539Spjd u_int sc_writes; 218309205Smav u_int sc_refcnt; /* Number of softc references */ 219132904Spjd 220132904Spjd TAILQ_HEAD(, g_mirror_event) sc_events; 221132904Spjd struct mtx sc_events_mtx; 222132904Spjd 223132904Spjd struct callout sc_callout; 224145305Spjd 225145305Spjd struct root_hold_token *sc_rootmount; 226256880Smav 227256880Smav struct mtx sc_done_mtx; 228132904Spjd}; 229132904Spjd#define sc_name sc_geom->name 230132904Spjd 231318752Smavstruct g_mirror_metadata; 232318752Smav 233132904Spjdu_int g_mirror_ndisks(struct g_mirror_softc *sc, int state); 234318752Smavstruct g_geom * g_mirror_create(struct g_class *mp, 235318752Smav const struct g_mirror_metadata *md, u_int type); 236157630Spjd#define G_MIRROR_DESTROY_SOFT 0 237157630Spjd#define G_MIRROR_DESTROY_DELAYED 1 238157630Spjd#define G_MIRROR_DESTROY_HARD 2 239157630Spjdint g_mirror_destroy(struct g_mirror_softc *sc, int how); 240132904Spjdint g_mirror_event_send(void *arg, int state, int flags); 241132904Spjdstruct g_mirror_metadata; 242139650Spjdint g_mirror_add_disk(struct g_mirror_softc *sc, struct g_provider *pp, 243139650Spjd struct g_mirror_metadata *md); 244139650Spjdint g_mirror_read_metadata(struct g_consumer *cp, struct g_mirror_metadata *md); 245132904Spjdvoid g_mirror_fill_metadata(struct g_mirror_softc *sc, 246132904Spjd struct g_mirror_disk *disk, struct g_mirror_metadata *md); 247132904Spjdvoid g_mirror_update_metadata(struct g_mirror_disk *disk); 248132904Spjd 249132904Spjdg_ctl_req_t g_mirror_config; 250132904Spjd#endif /* _KERNEL */ 251132904Spjd 252132904Spjdstruct g_mirror_metadata { 253132904Spjd char md_magic[16]; /* Magic value. */ 254132904Spjd uint32_t md_version; /* Version number. */ 255132904Spjd char md_name[16]; /* Mirror name. */ 256132904Spjd uint32_t md_mid; /* Mirror unique ID. */ 257132904Spjd uint32_t md_did; /* Disk unique ID. */ 258132904Spjd uint8_t md_all; /* Number of disks in mirror. */ 259139213Spjd uint32_t md_genid; /* Generation ID. */ 260132904Spjd uint32_t md_syncid; /* Synchronization ID. */ 261132904Spjd uint8_t md_priority; /* Disk priority. */ 262132904Spjd uint32_t md_slice; /* Slice size. */ 263132904Spjd uint8_t md_balance; /* Balance type. */ 264132904Spjd uint64_t md_mediasize; /* Size of the smallest 265132904Spjd disk in mirror. */ 266132904Spjd uint32_t md_sectorsize; /* Sector size. */ 267132904Spjd uint64_t md_sync_offset; /* Synchronized offset. */ 268132904Spjd uint64_t md_mflags; /* Additional mirror flags. */ 269132904Spjd uint64_t md_dflags; /* Additional disk flags. */ 270133373Spjd char md_provider[16]; /* Hardcoded provider. */ 271142727Spjd uint64_t md_provsize; /* Provider's size. */ 272132904Spjd u_char md_hash[16]; /* MD5 hash. */ 273132904Spjd}; 274132904Spjdstatic __inline void 275132904Spjdmirror_metadata_encode(struct g_mirror_metadata *md, u_char *data) 276132904Spjd{ 277132904Spjd MD5_CTX ctx; 278132904Spjd 279132904Spjd bcopy(md->md_magic, data, 16); 280132904Spjd le32enc(data + 16, md->md_version); 281132904Spjd bcopy(md->md_name, data + 20, 16); 282132904Spjd le32enc(data + 36, md->md_mid); 283132904Spjd le32enc(data + 40, md->md_did); 284132904Spjd *(data + 44) = md->md_all; 285139213Spjd le32enc(data + 45, md->md_genid); 286139213Spjd le32enc(data + 49, md->md_syncid); 287139213Spjd *(data + 53) = md->md_priority; 288139213Spjd le32enc(data + 54, md->md_slice); 289139213Spjd *(data + 58) = md->md_balance; 290139213Spjd le64enc(data + 59, md->md_mediasize); 291139213Spjd le32enc(data + 67, md->md_sectorsize); 292139213Spjd le64enc(data + 71, md->md_sync_offset); 293139213Spjd le64enc(data + 79, md->md_mflags); 294139213Spjd le64enc(data + 87, md->md_dflags); 295139213Spjd bcopy(md->md_provider, data + 95, 16); 296142727Spjd le64enc(data + 111, md->md_provsize); 297132904Spjd MD5Init(&ctx); 298142727Spjd MD5Update(&ctx, data, 119); 299132904Spjd MD5Final(md->md_hash, &ctx); 300142727Spjd bcopy(md->md_hash, data + 119, 16); 301132904Spjd} 302132904Spjdstatic __inline int 303139213Spjdmirror_metadata_decode_v0v1(const u_char *data, struct g_mirror_metadata *md) 304132904Spjd{ 305132904Spjd MD5_CTX ctx; 306132904Spjd 307132904Spjd bcopy(data + 20, md->md_name, 16); 308132904Spjd md->md_mid = le32dec(data + 36); 309132904Spjd md->md_did = le32dec(data + 40); 310132904Spjd md->md_all = *(data + 44); 311132904Spjd md->md_syncid = le32dec(data + 45); 312132904Spjd md->md_priority = *(data + 49); 313132904Spjd md->md_slice = le32dec(data + 50); 314132904Spjd md->md_balance = *(data + 54); 315132904Spjd md->md_mediasize = le64dec(data + 55); 316132904Spjd md->md_sectorsize = le32dec(data + 63); 317132904Spjd md->md_sync_offset = le64dec(data + 67); 318132904Spjd md->md_mflags = le64dec(data + 75); 319132904Spjd md->md_dflags = le64dec(data + 83); 320133373Spjd bcopy(data + 91, md->md_provider, 16); 321133373Spjd bcopy(data + 107, md->md_hash, 16); 322132904Spjd MD5Init(&ctx); 323133373Spjd MD5Update(&ctx, data, 107); 324132904Spjd MD5Final(md->md_hash, &ctx); 325133373Spjd if (bcmp(md->md_hash, data + 107, 16) != 0) 326132904Spjd return (EINVAL); 327139213Spjd 328139213Spjd /* New fields. */ 329139213Spjd md->md_genid = 0; 330142727Spjd md->md_provsize = 0; 331139213Spjd 332132904Spjd return (0); 333132904Spjd} 334139213Spjdstatic __inline int 335139213Spjdmirror_metadata_decode_v2(const u_char *data, struct g_mirror_metadata *md) 336139213Spjd{ 337139213Spjd MD5_CTX ctx; 338132904Spjd 339139213Spjd bcopy(data + 20, md->md_name, 16); 340139213Spjd md->md_mid = le32dec(data + 36); 341139213Spjd md->md_did = le32dec(data + 40); 342139213Spjd md->md_all = *(data + 44); 343139213Spjd md->md_genid = le32dec(data + 45); 344139213Spjd md->md_syncid = le32dec(data + 49); 345139213Spjd md->md_priority = *(data + 53); 346139213Spjd md->md_slice = le32dec(data + 54); 347139213Spjd md->md_balance = *(data + 58); 348139213Spjd md->md_mediasize = le64dec(data + 59); 349139213Spjd md->md_sectorsize = le32dec(data + 67); 350139213Spjd md->md_sync_offset = le64dec(data + 71); 351139213Spjd md->md_mflags = le64dec(data + 79); 352139213Spjd md->md_dflags = le64dec(data + 87); 353139213Spjd bcopy(data + 95, md->md_provider, 16); 354139213Spjd bcopy(data + 111, md->md_hash, 16); 355139213Spjd MD5Init(&ctx); 356139213Spjd MD5Update(&ctx, data, 111); 357139213Spjd MD5Final(md->md_hash, &ctx); 358139213Spjd if (bcmp(md->md_hash, data + 111, 16) != 0) 359139213Spjd return (EINVAL); 360142727Spjd 361142727Spjd /* New fields. */ 362142727Spjd md->md_provsize = 0; 363142727Spjd 364139213Spjd return (0); 365139213Spjd} 366139213Spjdstatic __inline int 367163888Spjdmirror_metadata_decode_v3v4(const u_char *data, struct g_mirror_metadata *md) 368142727Spjd{ 369142727Spjd MD5_CTX ctx; 370142727Spjd 371142727Spjd bcopy(data + 20, md->md_name, 16); 372142727Spjd md->md_mid = le32dec(data + 36); 373142727Spjd md->md_did = le32dec(data + 40); 374142727Spjd md->md_all = *(data + 44); 375142727Spjd md->md_genid = le32dec(data + 45); 376142727Spjd md->md_syncid = le32dec(data + 49); 377142727Spjd md->md_priority = *(data + 53); 378142727Spjd md->md_slice = le32dec(data + 54); 379142727Spjd md->md_balance = *(data + 58); 380142727Spjd md->md_mediasize = le64dec(data + 59); 381142727Spjd md->md_sectorsize = le32dec(data + 67); 382142727Spjd md->md_sync_offset = le64dec(data + 71); 383142727Spjd md->md_mflags = le64dec(data + 79); 384142727Spjd md->md_dflags = le64dec(data + 87); 385142727Spjd bcopy(data + 95, md->md_provider, 16); 386142727Spjd md->md_provsize = le64dec(data + 111); 387142727Spjd bcopy(data + 119, md->md_hash, 16); 388142727Spjd MD5Init(&ctx); 389142727Spjd MD5Update(&ctx, data, 119); 390142727Spjd MD5Final(md->md_hash, &ctx); 391142727Spjd if (bcmp(md->md_hash, data + 119, 16) != 0) 392142727Spjd return (EINVAL); 393142727Spjd return (0); 394142727Spjd} 395142727Spjdstatic __inline int 396139213Spjdmirror_metadata_decode(const u_char *data, struct g_mirror_metadata *md) 397139213Spjd{ 398139213Spjd int error; 399139213Spjd 400139213Spjd bcopy(data, md->md_magic, 16); 401139213Spjd md->md_version = le32dec(data + 16); 402139213Spjd switch (md->md_version) { 403139213Spjd case 0: 404139213Spjd case 1: 405139213Spjd error = mirror_metadata_decode_v0v1(data, md); 406139213Spjd break; 407139213Spjd case 2: 408139213Spjd error = mirror_metadata_decode_v2(data, md); 409139213Spjd break; 410142727Spjd case 3: 411163888Spjd case 4: 412163888Spjd error = mirror_metadata_decode_v3v4(data, md); 413142727Spjd break; 414139213Spjd default: 415139213Spjd error = EINVAL; 416139213Spjd break; 417139213Spjd } 418139213Spjd return (error); 419139213Spjd} 420139213Spjd 421132904Spjdstatic __inline const char * 422132904Spjdbalance_name(u_int balance) 423132904Spjd{ 424132904Spjd static const char *algorithms[] = { 425132904Spjd [G_MIRROR_BALANCE_NONE] = "none", 426132904Spjd [G_MIRROR_BALANCE_ROUND_ROBIN] = "round-robin", 427132904Spjd [G_MIRROR_BALANCE_LOAD] = "load", 428132904Spjd [G_MIRROR_BALANCE_SPLIT] = "split", 429133115Spjd [G_MIRROR_BALANCE_PREFER] = "prefer", 430132904Spjd [G_MIRROR_BALANCE_MAX + 1] = "unknown" 431132904Spjd }; 432132904Spjd 433132904Spjd if (balance > G_MIRROR_BALANCE_MAX) 434132904Spjd balance = G_MIRROR_BALANCE_MAX + 1; 435132904Spjd 436132904Spjd return (algorithms[balance]); 437132904Spjd} 438132904Spjd 439132904Spjdstatic __inline int 440132904Spjdbalance_id(const char *name) 441132904Spjd{ 442132904Spjd static const char *algorithms[] = { 443132904Spjd [G_MIRROR_BALANCE_NONE] = "none", 444132904Spjd [G_MIRROR_BALANCE_ROUND_ROBIN] = "round-robin", 445132904Spjd [G_MIRROR_BALANCE_LOAD] = "load", 446133115Spjd [G_MIRROR_BALANCE_SPLIT] = "split", 447133115Spjd [G_MIRROR_BALANCE_PREFER] = "prefer" 448132904Spjd }; 449132904Spjd int n; 450132904Spjd 451132904Spjd for (n = G_MIRROR_BALANCE_MIN; n <= G_MIRROR_BALANCE_MAX; n++) { 452132904Spjd if (strcmp(name, algorithms[n]) == 0) 453132904Spjd return (n); 454132904Spjd } 455132904Spjd return (-1); 456132904Spjd} 457132904Spjd 458132904Spjdstatic __inline void 459132904Spjdmirror_metadata_dump(const struct g_mirror_metadata *md) 460132904Spjd{ 461132904Spjd static const char hex[] = "0123456789abcdef"; 462132904Spjd char hash[16 * 2 + 1]; 463132904Spjd u_int i; 464132904Spjd 465132904Spjd printf(" magic: %s\n", md->md_magic); 466132904Spjd printf(" version: %u\n", (u_int)md->md_version); 467132904Spjd printf(" name: %s\n", md->md_name); 468132904Spjd printf(" mid: %u\n", (u_int)md->md_mid); 469132904Spjd printf(" did: %u\n", (u_int)md->md_did); 470132904Spjd printf(" all: %u\n", (u_int)md->md_all); 471139213Spjd printf(" genid: %u\n", (u_int)md->md_genid); 472132904Spjd printf(" syncid: %u\n", (u_int)md->md_syncid); 473132904Spjd printf(" priority: %u\n", (u_int)md->md_priority); 474132904Spjd printf(" slice: %u\n", (u_int)md->md_slice); 475132904Spjd printf(" balance: %s\n", balance_name((u_int)md->md_balance)); 476132904Spjd printf(" mediasize: %jd\n", (intmax_t)md->md_mediasize); 477132904Spjd printf("sectorsize: %u\n", (u_int)md->md_sectorsize); 478132904Spjd printf("syncoffset: %jd\n", (intmax_t)md->md_sync_offset); 479132904Spjd printf(" mflags:"); 480132904Spjd if (md->md_mflags == 0) 481132904Spjd printf(" NONE"); 482132904Spjd else { 483163888Spjd if ((md->md_mflags & G_MIRROR_DEVICE_FLAG_NOFAILSYNC) != 0) 484163888Spjd printf(" NOFAILSYNC"); 485132904Spjd if ((md->md_mflags & G_MIRROR_DEVICE_FLAG_NOAUTOSYNC) != 0) 486132904Spjd printf(" NOAUTOSYNC"); 487132904Spjd } 488132904Spjd printf("\n"); 489132904Spjd printf(" dflags:"); 490133527Spjd if (md->md_dflags == 0) 491132904Spjd printf(" NONE"); 492132904Spjd else { 493132904Spjd if ((md->md_dflags & G_MIRROR_DISK_FLAG_DIRTY) != 0) 494132904Spjd printf(" DIRTY"); 495132904Spjd if ((md->md_dflags & G_MIRROR_DISK_FLAG_SYNCHRONIZING) != 0) 496132904Spjd printf(" SYNCHRONIZING"); 497132904Spjd if ((md->md_dflags & G_MIRROR_DISK_FLAG_FORCE_SYNC) != 0) 498132904Spjd printf(" FORCE_SYNC"); 499132904Spjd if ((md->md_dflags & G_MIRROR_DISK_FLAG_INACTIVE) != 0) 500132904Spjd printf(" INACTIVE"); 501132904Spjd } 502132904Spjd printf("\n"); 503133373Spjd printf("hcprovider: %s\n", md->md_provider); 504142727Spjd printf(" provsize: %ju\n", (uintmax_t)md->md_provsize); 505132904Spjd bzero(hash, sizeof(hash)); 506132904Spjd for (i = 0; i < 16; i++) { 507132904Spjd hash[i * 2] = hex[md->md_hash[i] >> 4]; 508132904Spjd hash[i * 2 + 1] = hex[md->md_hash[i] & 0x0f]; 509132904Spjd } 510132904Spjd printf(" MD5 hash: %s\n", hash); 511132904Spjd} 512132904Spjd#endif /* !_G_MIRROR_H_ */ 513