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/10/sys/geom/mirror/g_mirror.h 324589 2017-10-13 09:14:05Z avg $ 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 63132904Spjd#define G_MIRROR_DISK_FLAG_MASK (G_MIRROR_DISK_FLAG_DIRTY | \ 64132904Spjd G_MIRROR_DISK_FLAG_SYNCHRONIZING | \ 65132904Spjd G_MIRROR_DISK_FLAG_FORCE_SYNC | \ 66237930Sglebius G_MIRROR_DISK_FLAG_INACTIVE | \ 67237930Sglebius G_MIRROR_DISK_FLAG_CANDELETE) 68132904Spjd 69132904Spjd#define G_MIRROR_DEVICE_FLAG_NOAUTOSYNC 0x0000000000000001ULL 70163888Spjd#define G_MIRROR_DEVICE_FLAG_NOFAILSYNC 0x0000000000000002ULL 71163888Spjd#define G_MIRROR_DEVICE_FLAG_MASK (G_MIRROR_DEVICE_FLAG_NOAUTOSYNC | \ 72163888Spjd G_MIRROR_DEVICE_FLAG_NOFAILSYNC) 73132904Spjd 74132904Spjd#ifdef _KERNEL 75132904Spjdextern u_int g_mirror_debug; 76132904Spjd 77132904Spjd#define G_MIRROR_DEBUG(lvl, ...) do { \ 78132904Spjd if (g_mirror_debug >= (lvl)) { \ 79132904Spjd printf("GEOM_MIRROR"); \ 80132904Spjd if (g_mirror_debug > 0) \ 81132904Spjd printf("[%u]", lvl); \ 82132904Spjd printf(": "); \ 83132904Spjd printf(__VA_ARGS__); \ 84132904Spjd printf("\n"); \ 85132904Spjd } \ 86132904Spjd} while (0) 87132904Spjd#define G_MIRROR_LOGREQ(lvl, bp, ...) do { \ 88132904Spjd if (g_mirror_debug >= (lvl)) { \ 89132904Spjd printf("GEOM_MIRROR"); \ 90132904Spjd if (g_mirror_debug > 0) \ 91132904Spjd printf("[%u]", lvl); \ 92132904Spjd printf(": "); \ 93132904Spjd printf(__VA_ARGS__); \ 94132904Spjd printf(" "); \ 95132904Spjd g_print_bio(bp); \ 96132904Spjd printf("\n"); \ 97132904Spjd } \ 98132904Spjd} while (0) 99132904Spjd 100133142Spjd#define G_MIRROR_BIO_FLAG_REGULAR 0x01 101133142Spjd#define G_MIRROR_BIO_FLAG_SYNC 0x02 102133142Spjd 103132904Spjd/* 104132904Spjd * Informations needed for synchronization. 105132904Spjd */ 106132904Spjdstruct g_mirror_disk_sync { 107132904Spjd struct g_consumer *ds_consumer; /* Consumer connected to our mirror. */ 108156610Spjd off_t ds_offset; /* Offset of next request to send. */ 109156610Spjd off_t ds_offset_done; /* Offset of already synchronized 110132904Spjd region. */ 111156610Spjd u_int ds_syncid; /* Disk's synchronization ID. */ 112156610Spjd u_int ds_inflight; /* Number of in-flight sync requests. */ 113156610Spjd struct bio **ds_bios; /* BIOs for synchronization I/O. */ 114132904Spjd}; 115132904Spjd 116132904Spjd/* 117132904Spjd * Informations needed for synchronization. 118132904Spjd */ 119132904Spjdstruct g_mirror_device_sync { 120132904Spjd struct g_geom *ds_geom; /* Synchronization geom. */ 121132904Spjd u_int ds_ndisks; /* Number of disks in SYNCHRONIZING 122132904Spjd state. */ 123132904Spjd}; 124132904Spjd 125132904Spjd#define G_MIRROR_DISK_STATE_NONE 0 126132904Spjd#define G_MIRROR_DISK_STATE_NEW 1 127132904Spjd#define G_MIRROR_DISK_STATE_ACTIVE 2 128132904Spjd#define G_MIRROR_DISK_STATE_STALE 3 129132904Spjd#define G_MIRROR_DISK_STATE_SYNCHRONIZING 4 130132904Spjd#define G_MIRROR_DISK_STATE_DISCONNECTED 5 131132904Spjd#define G_MIRROR_DISK_STATE_DESTROY 6 132132904Spjdstruct g_mirror_disk { 133132904Spjd uint32_t d_id; /* Disk ID. */ 134132904Spjd struct g_consumer *d_consumer; /* Consumer. */ 135132904Spjd struct g_mirror_softc *d_softc; /* Back-pointer to softc. */ 136132904Spjd int d_state; /* Disk state. */ 137132904Spjd u_int d_priority; /* Disk priority. */ 138200086Smav u_int load; /* Averaged queue length */ 139200086Smav off_t d_last_offset; /* Last read offset */ 140132904Spjd uint64_t d_flags; /* Additional flags. */ 141139213Spjd u_int d_genid; /* Disk's generation ID. */ 142132904Spjd struct g_mirror_disk_sync d_sync;/* Sync information. */ 143132904Spjd LIST_ENTRY(g_mirror_disk) d_next; 144132904Spjd}; 145132904Spjd#define d_name d_consumer->provider->name 146132904Spjd 147132904Spjd#define G_MIRROR_EVENT_DONTWAIT 0x1 148132904Spjd#define G_MIRROR_EVENT_WAIT 0x2 149132904Spjd#define G_MIRROR_EVENT_DEVICE 0x4 150132904Spjd#define G_MIRROR_EVENT_DONE 0x8 151132904Spjdstruct g_mirror_event { 152132904Spjd struct g_mirror_disk *e_disk; 153132904Spjd int e_state; 154132904Spjd int e_flags; 155132904Spjd int e_error; 156132904Spjd TAILQ_ENTRY(g_mirror_event) e_next; 157132904Spjd}; 158132904Spjd 159132904Spjd#define G_MIRROR_DEVICE_FLAG_DESTROY 0x0100000000000000ULL 160132904Spjd#define G_MIRROR_DEVICE_FLAG_WAIT 0x0200000000000000ULL 161157630Spjd#define G_MIRROR_DEVICE_FLAG_DESTROYING 0x0400000000000000ULL 162235599Sae#define G_MIRROR_DEVICE_FLAG_TASTING 0x0800000000000000ULL 163260503Sae#define G_MIRROR_DEVICE_FLAG_WIPE 0x1000000000000000ULL 164132904Spjd 165132904Spjd#define G_MIRROR_DEVICE_STATE_STARTING 0 166132904Spjd#define G_MIRROR_DEVICE_STATE_RUNNING 1 167132904Spjd 168139213Spjd/* Bump syncid on first write. */ 169324589Savg#define G_MIRROR_BUMP_SYNCID 0x1 170139213Spjd/* Bump genid immediately. */ 171324589Savg#define G_MIRROR_BUMP_GENID 0x2 172324589Savg/* Bump syncid immediately. */ 173324589Savg#define G_MIRROR_BUMP_SYNCID_NOW 0x4 174132904Spjdstruct g_mirror_softc { 175132904Spjd u_int sc_state; /* Device state. */ 176132904Spjd uint32_t sc_slice; /* Slice size. */ 177132904Spjd uint8_t sc_balance; /* Balance algorithm. */ 178132904Spjd uint64_t sc_mediasize; /* Device size. */ 179132904Spjd uint32_t sc_sectorsize; /* Sector size. */ 180132904Spjd uint64_t sc_flags; /* Additional flags. */ 181132904Spjd 182132904Spjd struct g_geom *sc_geom; 183132904Spjd struct g_provider *sc_provider; 184307666Smav int sc_provider_open; 185132904Spjd 186132904Spjd uint32_t sc_id; /* Mirror unique ID. */ 187132904Spjd 188156610Spjd struct sx sc_lock; 189132904Spjd struct bio_queue_head sc_queue; 190132904Spjd struct mtx sc_queue_mtx; 191132904Spjd struct proc *sc_worker; 192156610Spjd struct bio_queue_head sc_regular_delayed; /* Delayed I/O requests due 193156610Spjd collision with sync 194156610Spjd requests. */ 195156610Spjd struct bio_queue_head sc_inflight; /* In-flight regular write 196156610Spjd requests. */ 197156610Spjd struct bio_queue_head sc_sync_delayed; /* Delayed sync requests due 198156610Spjd collision with regular 199156610Spjd requests. */ 200132904Spjd 201132904Spjd LIST_HEAD(, g_mirror_disk) sc_disks; 202132904Spjd u_int sc_ndisks; /* Number of disks. */ 203132904Spjd struct g_mirror_disk *sc_hint; 204132904Spjd 205139213Spjd u_int sc_genid; /* Generation ID. */ 206132904Spjd u_int sc_syncid; /* Synchronization ID. */ 207139213Spjd int sc_bump_id; 208132904Spjd struct g_mirror_device_sync sc_sync; 209137248Spjd int sc_idle; /* DIRTY flags removed. */ 210155539Spjd time_t sc_last_write; 211155539Spjd u_int sc_writes; 212309206Smav u_int sc_refcnt; /* Number of softc references */ 213132904Spjd 214132904Spjd TAILQ_HEAD(, g_mirror_event) sc_events; 215132904Spjd struct mtx sc_events_mtx; 216132904Spjd 217132904Spjd struct callout sc_callout; 218145305Spjd 219145305Spjd struct root_hold_token *sc_rootmount; 220260385Sscottl 221260385Sscottl struct mtx sc_done_mtx; 222132904Spjd}; 223132904Spjd#define sc_name sc_geom->name 224132904Spjd 225132904Spjdu_int g_mirror_ndisks(struct g_mirror_softc *sc, int state); 226157630Spjd#define G_MIRROR_DESTROY_SOFT 0 227157630Spjd#define G_MIRROR_DESTROY_DELAYED 1 228157630Spjd#define G_MIRROR_DESTROY_HARD 2 229157630Spjdint g_mirror_destroy(struct g_mirror_softc *sc, int how); 230132904Spjdint g_mirror_event_send(void *arg, int state, int flags); 231132904Spjdstruct g_mirror_metadata; 232139650Spjdint g_mirror_add_disk(struct g_mirror_softc *sc, struct g_provider *pp, 233139650Spjd struct g_mirror_metadata *md); 234139650Spjdint g_mirror_read_metadata(struct g_consumer *cp, struct g_mirror_metadata *md); 235132904Spjdvoid g_mirror_fill_metadata(struct g_mirror_softc *sc, 236132904Spjd struct g_mirror_disk *disk, struct g_mirror_metadata *md); 237132904Spjdvoid g_mirror_update_metadata(struct g_mirror_disk *disk); 238132904Spjd 239132904Spjdg_ctl_req_t g_mirror_config; 240132904Spjd#endif /* _KERNEL */ 241132904Spjd 242132904Spjdstruct g_mirror_metadata { 243132904Spjd char md_magic[16]; /* Magic value. */ 244132904Spjd uint32_t md_version; /* Version number. */ 245132904Spjd char md_name[16]; /* Mirror name. */ 246132904Spjd uint32_t md_mid; /* Mirror unique ID. */ 247132904Spjd uint32_t md_did; /* Disk unique ID. */ 248132904Spjd uint8_t md_all; /* Number of disks in mirror. */ 249139213Spjd uint32_t md_genid; /* Generation ID. */ 250132904Spjd uint32_t md_syncid; /* Synchronization ID. */ 251132904Spjd uint8_t md_priority; /* Disk priority. */ 252132904Spjd uint32_t md_slice; /* Slice size. */ 253132904Spjd uint8_t md_balance; /* Balance type. */ 254132904Spjd uint64_t md_mediasize; /* Size of the smallest 255132904Spjd disk in mirror. */ 256132904Spjd uint32_t md_sectorsize; /* Sector size. */ 257132904Spjd uint64_t md_sync_offset; /* Synchronized offset. */ 258132904Spjd uint64_t md_mflags; /* Additional mirror flags. */ 259132904Spjd uint64_t md_dflags; /* Additional disk flags. */ 260133373Spjd char md_provider[16]; /* Hardcoded provider. */ 261142727Spjd uint64_t md_provsize; /* Provider's size. */ 262132904Spjd u_char md_hash[16]; /* MD5 hash. */ 263132904Spjd}; 264132904Spjdstatic __inline void 265132904Spjdmirror_metadata_encode(struct g_mirror_metadata *md, u_char *data) 266132904Spjd{ 267132904Spjd MD5_CTX ctx; 268132904Spjd 269132904Spjd bcopy(md->md_magic, data, 16); 270132904Spjd le32enc(data + 16, md->md_version); 271132904Spjd bcopy(md->md_name, data + 20, 16); 272132904Spjd le32enc(data + 36, md->md_mid); 273132904Spjd le32enc(data + 40, md->md_did); 274132904Spjd *(data + 44) = md->md_all; 275139213Spjd le32enc(data + 45, md->md_genid); 276139213Spjd le32enc(data + 49, md->md_syncid); 277139213Spjd *(data + 53) = md->md_priority; 278139213Spjd le32enc(data + 54, md->md_slice); 279139213Spjd *(data + 58) = md->md_balance; 280139213Spjd le64enc(data + 59, md->md_mediasize); 281139213Spjd le32enc(data + 67, md->md_sectorsize); 282139213Spjd le64enc(data + 71, md->md_sync_offset); 283139213Spjd le64enc(data + 79, md->md_mflags); 284139213Spjd le64enc(data + 87, md->md_dflags); 285139213Spjd bcopy(md->md_provider, data + 95, 16); 286142727Spjd le64enc(data + 111, md->md_provsize); 287132904Spjd MD5Init(&ctx); 288142727Spjd MD5Update(&ctx, data, 119); 289132904Spjd MD5Final(md->md_hash, &ctx); 290142727Spjd bcopy(md->md_hash, data + 119, 16); 291132904Spjd} 292132904Spjdstatic __inline int 293139213Spjdmirror_metadata_decode_v0v1(const u_char *data, struct g_mirror_metadata *md) 294132904Spjd{ 295132904Spjd MD5_CTX ctx; 296132904Spjd 297132904Spjd bcopy(data + 20, md->md_name, 16); 298132904Spjd md->md_mid = le32dec(data + 36); 299132904Spjd md->md_did = le32dec(data + 40); 300132904Spjd md->md_all = *(data + 44); 301132904Spjd md->md_syncid = le32dec(data + 45); 302132904Spjd md->md_priority = *(data + 49); 303132904Spjd md->md_slice = le32dec(data + 50); 304132904Spjd md->md_balance = *(data + 54); 305132904Spjd md->md_mediasize = le64dec(data + 55); 306132904Spjd md->md_sectorsize = le32dec(data + 63); 307132904Spjd md->md_sync_offset = le64dec(data + 67); 308132904Spjd md->md_mflags = le64dec(data + 75); 309132904Spjd md->md_dflags = le64dec(data + 83); 310133373Spjd bcopy(data + 91, md->md_provider, 16); 311133373Spjd bcopy(data + 107, md->md_hash, 16); 312132904Spjd MD5Init(&ctx); 313133373Spjd MD5Update(&ctx, data, 107); 314132904Spjd MD5Final(md->md_hash, &ctx); 315133373Spjd if (bcmp(md->md_hash, data + 107, 16) != 0) 316132904Spjd return (EINVAL); 317139213Spjd 318139213Spjd /* New fields. */ 319139213Spjd md->md_genid = 0; 320142727Spjd md->md_provsize = 0; 321139213Spjd 322132904Spjd return (0); 323132904Spjd} 324139213Spjdstatic __inline int 325139213Spjdmirror_metadata_decode_v2(const u_char *data, struct g_mirror_metadata *md) 326139213Spjd{ 327139213Spjd MD5_CTX ctx; 328132904Spjd 329139213Spjd bcopy(data + 20, md->md_name, 16); 330139213Spjd md->md_mid = le32dec(data + 36); 331139213Spjd md->md_did = le32dec(data + 40); 332139213Spjd md->md_all = *(data + 44); 333139213Spjd md->md_genid = le32dec(data + 45); 334139213Spjd md->md_syncid = le32dec(data + 49); 335139213Spjd md->md_priority = *(data + 53); 336139213Spjd md->md_slice = le32dec(data + 54); 337139213Spjd md->md_balance = *(data + 58); 338139213Spjd md->md_mediasize = le64dec(data + 59); 339139213Spjd md->md_sectorsize = le32dec(data + 67); 340139213Spjd md->md_sync_offset = le64dec(data + 71); 341139213Spjd md->md_mflags = le64dec(data + 79); 342139213Spjd md->md_dflags = le64dec(data + 87); 343139213Spjd bcopy(data + 95, md->md_provider, 16); 344139213Spjd bcopy(data + 111, md->md_hash, 16); 345139213Spjd MD5Init(&ctx); 346139213Spjd MD5Update(&ctx, data, 111); 347139213Spjd MD5Final(md->md_hash, &ctx); 348139213Spjd if (bcmp(md->md_hash, data + 111, 16) != 0) 349139213Spjd return (EINVAL); 350142727Spjd 351142727Spjd /* New fields. */ 352142727Spjd md->md_provsize = 0; 353142727Spjd 354139213Spjd return (0); 355139213Spjd} 356139213Spjdstatic __inline int 357163888Spjdmirror_metadata_decode_v3v4(const u_char *data, struct g_mirror_metadata *md) 358142727Spjd{ 359142727Spjd MD5_CTX ctx; 360142727Spjd 361142727Spjd bcopy(data + 20, md->md_name, 16); 362142727Spjd md->md_mid = le32dec(data + 36); 363142727Spjd md->md_did = le32dec(data + 40); 364142727Spjd md->md_all = *(data + 44); 365142727Spjd md->md_genid = le32dec(data + 45); 366142727Spjd md->md_syncid = le32dec(data + 49); 367142727Spjd md->md_priority = *(data + 53); 368142727Spjd md->md_slice = le32dec(data + 54); 369142727Spjd md->md_balance = *(data + 58); 370142727Spjd md->md_mediasize = le64dec(data + 59); 371142727Spjd md->md_sectorsize = le32dec(data + 67); 372142727Spjd md->md_sync_offset = le64dec(data + 71); 373142727Spjd md->md_mflags = le64dec(data + 79); 374142727Spjd md->md_dflags = le64dec(data + 87); 375142727Spjd bcopy(data + 95, md->md_provider, 16); 376142727Spjd md->md_provsize = le64dec(data + 111); 377142727Spjd bcopy(data + 119, md->md_hash, 16); 378142727Spjd MD5Init(&ctx); 379142727Spjd MD5Update(&ctx, data, 119); 380142727Spjd MD5Final(md->md_hash, &ctx); 381142727Spjd if (bcmp(md->md_hash, data + 119, 16) != 0) 382142727Spjd return (EINVAL); 383142727Spjd return (0); 384142727Spjd} 385142727Spjdstatic __inline int 386139213Spjdmirror_metadata_decode(const u_char *data, struct g_mirror_metadata *md) 387139213Spjd{ 388139213Spjd int error; 389139213Spjd 390139213Spjd bcopy(data, md->md_magic, 16); 391139213Spjd md->md_version = le32dec(data + 16); 392139213Spjd switch (md->md_version) { 393139213Spjd case 0: 394139213Spjd case 1: 395139213Spjd error = mirror_metadata_decode_v0v1(data, md); 396139213Spjd break; 397139213Spjd case 2: 398139213Spjd error = mirror_metadata_decode_v2(data, md); 399139213Spjd break; 400142727Spjd case 3: 401163888Spjd case 4: 402163888Spjd error = mirror_metadata_decode_v3v4(data, md); 403142727Spjd break; 404139213Spjd default: 405139213Spjd error = EINVAL; 406139213Spjd break; 407139213Spjd } 408139213Spjd return (error); 409139213Spjd} 410139213Spjd 411132904Spjdstatic __inline const char * 412132904Spjdbalance_name(u_int balance) 413132904Spjd{ 414132904Spjd static const char *algorithms[] = { 415132904Spjd [G_MIRROR_BALANCE_NONE] = "none", 416132904Spjd [G_MIRROR_BALANCE_ROUND_ROBIN] = "round-robin", 417132904Spjd [G_MIRROR_BALANCE_LOAD] = "load", 418132904Spjd [G_MIRROR_BALANCE_SPLIT] = "split", 419133115Spjd [G_MIRROR_BALANCE_PREFER] = "prefer", 420132904Spjd [G_MIRROR_BALANCE_MAX + 1] = "unknown" 421132904Spjd }; 422132904Spjd 423132904Spjd if (balance > G_MIRROR_BALANCE_MAX) 424132904Spjd balance = G_MIRROR_BALANCE_MAX + 1; 425132904Spjd 426132904Spjd return (algorithms[balance]); 427132904Spjd} 428132904Spjd 429132904Spjdstatic __inline int 430132904Spjdbalance_id(const char *name) 431132904Spjd{ 432132904Spjd static const char *algorithms[] = { 433132904Spjd [G_MIRROR_BALANCE_NONE] = "none", 434132904Spjd [G_MIRROR_BALANCE_ROUND_ROBIN] = "round-robin", 435132904Spjd [G_MIRROR_BALANCE_LOAD] = "load", 436133115Spjd [G_MIRROR_BALANCE_SPLIT] = "split", 437133115Spjd [G_MIRROR_BALANCE_PREFER] = "prefer" 438132904Spjd }; 439132904Spjd int n; 440132904Spjd 441132904Spjd for (n = G_MIRROR_BALANCE_MIN; n <= G_MIRROR_BALANCE_MAX; n++) { 442132904Spjd if (strcmp(name, algorithms[n]) == 0) 443132904Spjd return (n); 444132904Spjd } 445132904Spjd return (-1); 446132904Spjd} 447132904Spjd 448132904Spjdstatic __inline void 449132904Spjdmirror_metadata_dump(const struct g_mirror_metadata *md) 450132904Spjd{ 451132904Spjd static const char hex[] = "0123456789abcdef"; 452132904Spjd char hash[16 * 2 + 1]; 453132904Spjd u_int i; 454132904Spjd 455132904Spjd printf(" magic: %s\n", md->md_magic); 456132904Spjd printf(" version: %u\n", (u_int)md->md_version); 457132904Spjd printf(" name: %s\n", md->md_name); 458132904Spjd printf(" mid: %u\n", (u_int)md->md_mid); 459132904Spjd printf(" did: %u\n", (u_int)md->md_did); 460132904Spjd printf(" all: %u\n", (u_int)md->md_all); 461139213Spjd printf(" genid: %u\n", (u_int)md->md_genid); 462132904Spjd printf(" syncid: %u\n", (u_int)md->md_syncid); 463132904Spjd printf(" priority: %u\n", (u_int)md->md_priority); 464132904Spjd printf(" slice: %u\n", (u_int)md->md_slice); 465132904Spjd printf(" balance: %s\n", balance_name((u_int)md->md_balance)); 466132904Spjd printf(" mediasize: %jd\n", (intmax_t)md->md_mediasize); 467132904Spjd printf("sectorsize: %u\n", (u_int)md->md_sectorsize); 468132904Spjd printf("syncoffset: %jd\n", (intmax_t)md->md_sync_offset); 469132904Spjd printf(" mflags:"); 470132904Spjd if (md->md_mflags == 0) 471132904Spjd printf(" NONE"); 472132904Spjd else { 473163888Spjd if ((md->md_mflags & G_MIRROR_DEVICE_FLAG_NOFAILSYNC) != 0) 474163888Spjd printf(" NOFAILSYNC"); 475132904Spjd if ((md->md_mflags & G_MIRROR_DEVICE_FLAG_NOAUTOSYNC) != 0) 476132904Spjd printf(" NOAUTOSYNC"); 477132904Spjd } 478132904Spjd printf("\n"); 479132904Spjd printf(" dflags:"); 480133527Spjd if (md->md_dflags == 0) 481132904Spjd printf(" NONE"); 482132904Spjd else { 483132904Spjd if ((md->md_dflags & G_MIRROR_DISK_FLAG_DIRTY) != 0) 484132904Spjd printf(" DIRTY"); 485132904Spjd if ((md->md_dflags & G_MIRROR_DISK_FLAG_SYNCHRONIZING) != 0) 486132904Spjd printf(" SYNCHRONIZING"); 487132904Spjd if ((md->md_dflags & G_MIRROR_DISK_FLAG_FORCE_SYNC) != 0) 488132904Spjd printf(" FORCE_SYNC"); 489132904Spjd if ((md->md_dflags & G_MIRROR_DISK_FLAG_INACTIVE) != 0) 490132904Spjd printf(" INACTIVE"); 491132904Spjd } 492132904Spjd printf("\n"); 493133373Spjd printf("hcprovider: %s\n", md->md_provider); 494142727Spjd printf(" provsize: %ju\n", (uintmax_t)md->md_provsize); 495132904Spjd bzero(hash, sizeof(hash)); 496132904Spjd for (i = 0; i < 16; i++) { 497132904Spjd hash[i * 2] = hex[md->md_hash[i] >> 4]; 498132904Spjd hash[i * 2 + 1] = hex[md->md_hash[i] & 0x0f]; 499132904Spjd } 500132904Spjd printf(" MD5 hash: %s\n", hash); 501132904Spjd} 502132904Spjd#endif /* !_G_MIRROR_H_ */ 503