g_mirror.h revision 200086
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: head/sys/geom/mirror/g_mirror.h 200086 2009-12-03 21:47:51Z mav $ 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 62132904Spjd#define G_MIRROR_DISK_FLAG_MASK (G_MIRROR_DISK_FLAG_DIRTY | \ 63132904Spjd G_MIRROR_DISK_FLAG_SYNCHRONIZING | \ 64132904Spjd G_MIRROR_DISK_FLAG_FORCE_SYNC | \ 65132904Spjd G_MIRROR_DISK_FLAG_INACTIVE) 66132904Spjd 67132904Spjd#define G_MIRROR_DEVICE_FLAG_NOAUTOSYNC 0x0000000000000001ULL 68163888Spjd#define G_MIRROR_DEVICE_FLAG_NOFAILSYNC 0x0000000000000002ULL 69163888Spjd#define G_MIRROR_DEVICE_FLAG_MASK (G_MIRROR_DEVICE_FLAG_NOAUTOSYNC | \ 70163888Spjd G_MIRROR_DEVICE_FLAG_NOFAILSYNC) 71132904Spjd 72132904Spjd#ifdef _KERNEL 73132904Spjdextern u_int g_mirror_debug; 74132904Spjd 75132904Spjd#define G_MIRROR_DEBUG(lvl, ...) do { \ 76132904Spjd if (g_mirror_debug >= (lvl)) { \ 77132904Spjd printf("GEOM_MIRROR"); \ 78132904Spjd if (g_mirror_debug > 0) \ 79132904Spjd printf("[%u]", lvl); \ 80132904Spjd printf(": "); \ 81132904Spjd printf(__VA_ARGS__); \ 82132904Spjd printf("\n"); \ 83132904Spjd } \ 84132904Spjd} while (0) 85132904Spjd#define G_MIRROR_LOGREQ(lvl, bp, ...) do { \ 86132904Spjd if (g_mirror_debug >= (lvl)) { \ 87132904Spjd printf("GEOM_MIRROR"); \ 88132904Spjd if (g_mirror_debug > 0) \ 89132904Spjd printf("[%u]", lvl); \ 90132904Spjd printf(": "); \ 91132904Spjd printf(__VA_ARGS__); \ 92132904Spjd printf(" "); \ 93132904Spjd g_print_bio(bp); \ 94132904Spjd printf("\n"); \ 95132904Spjd } \ 96132904Spjd} while (0) 97132904Spjd 98133142Spjd#define G_MIRROR_BIO_FLAG_REGULAR 0x01 99133142Spjd#define G_MIRROR_BIO_FLAG_SYNC 0x02 100133142Spjd 101132904Spjd/* 102132904Spjd * Informations needed for synchronization. 103132904Spjd */ 104132904Spjdstruct g_mirror_disk_sync { 105132904Spjd struct g_consumer *ds_consumer; /* Consumer connected to our mirror. */ 106156610Spjd off_t ds_offset; /* Offset of next request to send. */ 107156610Spjd off_t ds_offset_done; /* Offset of already synchronized 108132904Spjd region. */ 109156610Spjd u_int ds_syncid; /* Disk's synchronization ID. */ 110156610Spjd u_int ds_inflight; /* Number of in-flight sync requests. */ 111156610Spjd struct bio **ds_bios; /* BIOs for synchronization I/O. */ 112132904Spjd}; 113132904Spjd 114132904Spjd/* 115132904Spjd * Informations needed for synchronization. 116132904Spjd */ 117132904Spjdstruct g_mirror_device_sync { 118132904Spjd struct g_geom *ds_geom; /* Synchronization geom. */ 119132904Spjd u_int ds_ndisks; /* Number of disks in SYNCHRONIZING 120132904Spjd state. */ 121132904Spjd}; 122132904Spjd 123132904Spjd#define G_MIRROR_DISK_STATE_NONE 0 124132904Spjd#define G_MIRROR_DISK_STATE_NEW 1 125132904Spjd#define G_MIRROR_DISK_STATE_ACTIVE 2 126132904Spjd#define G_MIRROR_DISK_STATE_STALE 3 127132904Spjd#define G_MIRROR_DISK_STATE_SYNCHRONIZING 4 128132904Spjd#define G_MIRROR_DISK_STATE_DISCONNECTED 5 129132904Spjd#define G_MIRROR_DISK_STATE_DESTROY 6 130132904Spjdstruct g_mirror_disk { 131132904Spjd uint32_t d_id; /* Disk ID. */ 132132904Spjd struct g_consumer *d_consumer; /* Consumer. */ 133132904Spjd struct g_mirror_softc *d_softc; /* Back-pointer to softc. */ 134132904Spjd int d_state; /* Disk state. */ 135132904Spjd u_int d_priority; /* Disk priority. */ 136200086Smav u_int load; /* Averaged queue length */ 137200086Smav off_t d_last_offset; /* Last read offset */ 138132904Spjd uint64_t d_flags; /* Additional flags. */ 139139213Spjd u_int d_genid; /* Disk's generation ID. */ 140132904Spjd struct g_mirror_disk_sync d_sync;/* Sync information. */ 141132904Spjd LIST_ENTRY(g_mirror_disk) d_next; 142132904Spjd}; 143132904Spjd#define d_name d_consumer->provider->name 144132904Spjd 145132904Spjd#define G_MIRROR_EVENT_DONTWAIT 0x1 146132904Spjd#define G_MIRROR_EVENT_WAIT 0x2 147132904Spjd#define G_MIRROR_EVENT_DEVICE 0x4 148132904Spjd#define G_MIRROR_EVENT_DONE 0x8 149132904Spjdstruct g_mirror_event { 150132904Spjd struct g_mirror_disk *e_disk; 151132904Spjd int e_state; 152132904Spjd int e_flags; 153132904Spjd int e_error; 154132904Spjd TAILQ_ENTRY(g_mirror_event) e_next; 155132904Spjd}; 156132904Spjd 157132904Spjd#define G_MIRROR_DEVICE_FLAG_DESTROY 0x0100000000000000ULL 158132904Spjd#define G_MIRROR_DEVICE_FLAG_WAIT 0x0200000000000000ULL 159157630Spjd#define G_MIRROR_DEVICE_FLAG_DESTROYING 0x0400000000000000ULL 160132904Spjd 161132904Spjd#define G_MIRROR_DEVICE_STATE_STARTING 0 162132904Spjd#define G_MIRROR_DEVICE_STATE_RUNNING 1 163132904Spjd 164139213Spjd/* Bump syncid on first write. */ 165139670Spjd#define G_MIRROR_BUMP_SYNCID 0x1 166139213Spjd/* Bump genid immediately. */ 167139670Spjd#define G_MIRROR_BUMP_GENID 0x2 168132904Spjdstruct g_mirror_softc { 169132904Spjd u_int sc_state; /* Device state. */ 170132904Spjd uint32_t sc_slice; /* Slice size. */ 171132904Spjd uint8_t sc_balance; /* Balance algorithm. */ 172132904Spjd uint64_t sc_mediasize; /* Device size. */ 173132904Spjd uint32_t sc_sectorsize; /* Sector size. */ 174132904Spjd uint64_t sc_flags; /* Additional flags. */ 175132904Spjd 176132904Spjd struct g_geom *sc_geom; 177132904Spjd struct g_provider *sc_provider; 178132904Spjd 179132904Spjd uint32_t sc_id; /* Mirror unique ID. */ 180132904Spjd 181156610Spjd struct sx sc_lock; 182132904Spjd struct bio_queue_head sc_queue; 183132904Spjd struct mtx sc_queue_mtx; 184132904Spjd struct proc *sc_worker; 185156610Spjd struct bio_queue_head sc_regular_delayed; /* Delayed I/O requests due 186156610Spjd collision with sync 187156610Spjd requests. */ 188156610Spjd struct bio_queue_head sc_inflight; /* In-flight regular write 189156610Spjd requests. */ 190156610Spjd struct bio_queue_head sc_sync_delayed; /* Delayed sync requests due 191156610Spjd collision with regular 192156610Spjd requests. */ 193132904Spjd 194132904Spjd LIST_HEAD(, g_mirror_disk) sc_disks; 195132904Spjd u_int sc_ndisks; /* Number of disks. */ 196132904Spjd struct g_mirror_disk *sc_hint; 197132904Spjd 198139213Spjd u_int sc_genid; /* Generation ID. */ 199132904Spjd u_int sc_syncid; /* Synchronization ID. */ 200139213Spjd int sc_bump_id; 201132904Spjd struct g_mirror_device_sync sc_sync; 202137248Spjd int sc_idle; /* DIRTY flags removed. */ 203155539Spjd time_t sc_last_write; 204155539Spjd u_int sc_writes; 205132904Spjd 206132904Spjd TAILQ_HEAD(, g_mirror_event) sc_events; 207132904Spjd struct mtx sc_events_mtx; 208132904Spjd 209132904Spjd struct callout sc_callout; 210145305Spjd 211145305Spjd struct root_hold_token *sc_rootmount; 212132904Spjd}; 213132904Spjd#define sc_name sc_geom->name 214132904Spjd 215132904Spjdu_int g_mirror_ndisks(struct g_mirror_softc *sc, int state); 216157630Spjd#define G_MIRROR_DESTROY_SOFT 0 217157630Spjd#define G_MIRROR_DESTROY_DELAYED 1 218157630Spjd#define G_MIRROR_DESTROY_HARD 2 219157630Spjdint g_mirror_destroy(struct g_mirror_softc *sc, int how); 220132904Spjdint g_mirror_event_send(void *arg, int state, int flags); 221132904Spjdstruct g_mirror_metadata; 222139650Spjdint g_mirror_add_disk(struct g_mirror_softc *sc, struct g_provider *pp, 223139650Spjd struct g_mirror_metadata *md); 224139650Spjdint g_mirror_read_metadata(struct g_consumer *cp, struct g_mirror_metadata *md); 225132904Spjdvoid g_mirror_fill_metadata(struct g_mirror_softc *sc, 226132904Spjd struct g_mirror_disk *disk, struct g_mirror_metadata *md); 227132904Spjdvoid g_mirror_update_metadata(struct g_mirror_disk *disk); 228132904Spjd 229132904Spjdg_ctl_req_t g_mirror_config; 230132904Spjd#endif /* _KERNEL */ 231132904Spjd 232132904Spjdstruct g_mirror_metadata { 233132904Spjd char md_magic[16]; /* Magic value. */ 234132904Spjd uint32_t md_version; /* Version number. */ 235132904Spjd char md_name[16]; /* Mirror name. */ 236132904Spjd uint32_t md_mid; /* Mirror unique ID. */ 237132904Spjd uint32_t md_did; /* Disk unique ID. */ 238132904Spjd uint8_t md_all; /* Number of disks in mirror. */ 239139213Spjd uint32_t md_genid; /* Generation ID. */ 240132904Spjd uint32_t md_syncid; /* Synchronization ID. */ 241132904Spjd uint8_t md_priority; /* Disk priority. */ 242132904Spjd uint32_t md_slice; /* Slice size. */ 243132904Spjd uint8_t md_balance; /* Balance type. */ 244132904Spjd uint64_t md_mediasize; /* Size of the smallest 245132904Spjd disk in mirror. */ 246132904Spjd uint32_t md_sectorsize; /* Sector size. */ 247132904Spjd uint64_t md_sync_offset; /* Synchronized offset. */ 248132904Spjd uint64_t md_mflags; /* Additional mirror flags. */ 249132904Spjd uint64_t md_dflags; /* Additional disk flags. */ 250133373Spjd char md_provider[16]; /* Hardcoded provider. */ 251142727Spjd uint64_t md_provsize; /* Provider's size. */ 252132904Spjd u_char md_hash[16]; /* MD5 hash. */ 253132904Spjd}; 254132904Spjdstatic __inline void 255132904Spjdmirror_metadata_encode(struct g_mirror_metadata *md, u_char *data) 256132904Spjd{ 257132904Spjd MD5_CTX ctx; 258132904Spjd 259132904Spjd bcopy(md->md_magic, data, 16); 260132904Spjd le32enc(data + 16, md->md_version); 261132904Spjd bcopy(md->md_name, data + 20, 16); 262132904Spjd le32enc(data + 36, md->md_mid); 263132904Spjd le32enc(data + 40, md->md_did); 264132904Spjd *(data + 44) = md->md_all; 265139213Spjd le32enc(data + 45, md->md_genid); 266139213Spjd le32enc(data + 49, md->md_syncid); 267139213Spjd *(data + 53) = md->md_priority; 268139213Spjd le32enc(data + 54, md->md_slice); 269139213Spjd *(data + 58) = md->md_balance; 270139213Spjd le64enc(data + 59, md->md_mediasize); 271139213Spjd le32enc(data + 67, md->md_sectorsize); 272139213Spjd le64enc(data + 71, md->md_sync_offset); 273139213Spjd le64enc(data + 79, md->md_mflags); 274139213Spjd le64enc(data + 87, md->md_dflags); 275139213Spjd bcopy(md->md_provider, data + 95, 16); 276142727Spjd le64enc(data + 111, md->md_provsize); 277132904Spjd MD5Init(&ctx); 278142727Spjd MD5Update(&ctx, data, 119); 279132904Spjd MD5Final(md->md_hash, &ctx); 280142727Spjd bcopy(md->md_hash, data + 119, 16); 281132904Spjd} 282132904Spjdstatic __inline int 283139213Spjdmirror_metadata_decode_v0v1(const u_char *data, struct g_mirror_metadata *md) 284132904Spjd{ 285132904Spjd MD5_CTX ctx; 286132904Spjd 287132904Spjd bcopy(data + 20, md->md_name, 16); 288132904Spjd md->md_mid = le32dec(data + 36); 289132904Spjd md->md_did = le32dec(data + 40); 290132904Spjd md->md_all = *(data + 44); 291132904Spjd md->md_syncid = le32dec(data + 45); 292132904Spjd md->md_priority = *(data + 49); 293132904Spjd md->md_slice = le32dec(data + 50); 294132904Spjd md->md_balance = *(data + 54); 295132904Spjd md->md_mediasize = le64dec(data + 55); 296132904Spjd md->md_sectorsize = le32dec(data + 63); 297132904Spjd md->md_sync_offset = le64dec(data + 67); 298132904Spjd md->md_mflags = le64dec(data + 75); 299132904Spjd md->md_dflags = le64dec(data + 83); 300133373Spjd bcopy(data + 91, md->md_provider, 16); 301133373Spjd bcopy(data + 107, md->md_hash, 16); 302132904Spjd MD5Init(&ctx); 303133373Spjd MD5Update(&ctx, data, 107); 304132904Spjd MD5Final(md->md_hash, &ctx); 305133373Spjd if (bcmp(md->md_hash, data + 107, 16) != 0) 306132904Spjd return (EINVAL); 307139213Spjd 308139213Spjd /* New fields. */ 309139213Spjd md->md_genid = 0; 310142727Spjd md->md_provsize = 0; 311139213Spjd 312132904Spjd return (0); 313132904Spjd} 314139213Spjdstatic __inline int 315139213Spjdmirror_metadata_decode_v2(const u_char *data, struct g_mirror_metadata *md) 316139213Spjd{ 317139213Spjd MD5_CTX ctx; 318132904Spjd 319139213Spjd bcopy(data + 20, md->md_name, 16); 320139213Spjd md->md_mid = le32dec(data + 36); 321139213Spjd md->md_did = le32dec(data + 40); 322139213Spjd md->md_all = *(data + 44); 323139213Spjd md->md_genid = le32dec(data + 45); 324139213Spjd md->md_syncid = le32dec(data + 49); 325139213Spjd md->md_priority = *(data + 53); 326139213Spjd md->md_slice = le32dec(data + 54); 327139213Spjd md->md_balance = *(data + 58); 328139213Spjd md->md_mediasize = le64dec(data + 59); 329139213Spjd md->md_sectorsize = le32dec(data + 67); 330139213Spjd md->md_sync_offset = le64dec(data + 71); 331139213Spjd md->md_mflags = le64dec(data + 79); 332139213Spjd md->md_dflags = le64dec(data + 87); 333139213Spjd bcopy(data + 95, md->md_provider, 16); 334139213Spjd bcopy(data + 111, md->md_hash, 16); 335139213Spjd MD5Init(&ctx); 336139213Spjd MD5Update(&ctx, data, 111); 337139213Spjd MD5Final(md->md_hash, &ctx); 338139213Spjd if (bcmp(md->md_hash, data + 111, 16) != 0) 339139213Spjd return (EINVAL); 340142727Spjd 341142727Spjd /* New fields. */ 342142727Spjd md->md_provsize = 0; 343142727Spjd 344139213Spjd return (0); 345139213Spjd} 346139213Spjdstatic __inline int 347163888Spjdmirror_metadata_decode_v3v4(const u_char *data, struct g_mirror_metadata *md) 348142727Spjd{ 349142727Spjd MD5_CTX ctx; 350142727Spjd 351142727Spjd bcopy(data + 20, md->md_name, 16); 352142727Spjd md->md_mid = le32dec(data + 36); 353142727Spjd md->md_did = le32dec(data + 40); 354142727Spjd md->md_all = *(data + 44); 355142727Spjd md->md_genid = le32dec(data + 45); 356142727Spjd md->md_syncid = le32dec(data + 49); 357142727Spjd md->md_priority = *(data + 53); 358142727Spjd md->md_slice = le32dec(data + 54); 359142727Spjd md->md_balance = *(data + 58); 360142727Spjd md->md_mediasize = le64dec(data + 59); 361142727Spjd md->md_sectorsize = le32dec(data + 67); 362142727Spjd md->md_sync_offset = le64dec(data + 71); 363142727Spjd md->md_mflags = le64dec(data + 79); 364142727Spjd md->md_dflags = le64dec(data + 87); 365142727Spjd bcopy(data + 95, md->md_provider, 16); 366142727Spjd md->md_provsize = le64dec(data + 111); 367142727Spjd bcopy(data + 119, md->md_hash, 16); 368142727Spjd MD5Init(&ctx); 369142727Spjd MD5Update(&ctx, data, 119); 370142727Spjd MD5Final(md->md_hash, &ctx); 371142727Spjd if (bcmp(md->md_hash, data + 119, 16) != 0) 372142727Spjd return (EINVAL); 373142727Spjd return (0); 374142727Spjd} 375142727Spjdstatic __inline int 376139213Spjdmirror_metadata_decode(const u_char *data, struct g_mirror_metadata *md) 377139213Spjd{ 378139213Spjd int error; 379139213Spjd 380139213Spjd bcopy(data, md->md_magic, 16); 381139213Spjd md->md_version = le32dec(data + 16); 382139213Spjd switch (md->md_version) { 383139213Spjd case 0: 384139213Spjd case 1: 385139213Spjd error = mirror_metadata_decode_v0v1(data, md); 386139213Spjd break; 387139213Spjd case 2: 388139213Spjd error = mirror_metadata_decode_v2(data, md); 389139213Spjd break; 390142727Spjd case 3: 391163888Spjd case 4: 392163888Spjd error = mirror_metadata_decode_v3v4(data, md); 393142727Spjd break; 394139213Spjd default: 395139213Spjd error = EINVAL; 396139213Spjd break; 397139213Spjd } 398139213Spjd return (error); 399139213Spjd} 400139213Spjd 401132904Spjdstatic __inline const char * 402132904Spjdbalance_name(u_int balance) 403132904Spjd{ 404132904Spjd static const char *algorithms[] = { 405132904Spjd [G_MIRROR_BALANCE_NONE] = "none", 406132904Spjd [G_MIRROR_BALANCE_ROUND_ROBIN] = "round-robin", 407132904Spjd [G_MIRROR_BALANCE_LOAD] = "load", 408132904Spjd [G_MIRROR_BALANCE_SPLIT] = "split", 409133115Spjd [G_MIRROR_BALANCE_PREFER] = "prefer", 410132904Spjd [G_MIRROR_BALANCE_MAX + 1] = "unknown" 411132904Spjd }; 412132904Spjd 413132904Spjd if (balance > G_MIRROR_BALANCE_MAX) 414132904Spjd balance = G_MIRROR_BALANCE_MAX + 1; 415132904Spjd 416132904Spjd return (algorithms[balance]); 417132904Spjd} 418132904Spjd 419132904Spjdstatic __inline int 420132904Spjdbalance_id(const char *name) 421132904Spjd{ 422132904Spjd static const char *algorithms[] = { 423132904Spjd [G_MIRROR_BALANCE_NONE] = "none", 424132904Spjd [G_MIRROR_BALANCE_ROUND_ROBIN] = "round-robin", 425132904Spjd [G_MIRROR_BALANCE_LOAD] = "load", 426133115Spjd [G_MIRROR_BALANCE_SPLIT] = "split", 427133115Spjd [G_MIRROR_BALANCE_PREFER] = "prefer" 428132904Spjd }; 429132904Spjd int n; 430132904Spjd 431132904Spjd for (n = G_MIRROR_BALANCE_MIN; n <= G_MIRROR_BALANCE_MAX; n++) { 432132904Spjd if (strcmp(name, algorithms[n]) == 0) 433132904Spjd return (n); 434132904Spjd } 435132904Spjd return (-1); 436132904Spjd} 437132904Spjd 438132904Spjdstatic __inline void 439132904Spjdmirror_metadata_dump(const struct g_mirror_metadata *md) 440132904Spjd{ 441132904Spjd static const char hex[] = "0123456789abcdef"; 442132904Spjd char hash[16 * 2 + 1]; 443132904Spjd u_int i; 444132904Spjd 445132904Spjd printf(" magic: %s\n", md->md_magic); 446132904Spjd printf(" version: %u\n", (u_int)md->md_version); 447132904Spjd printf(" name: %s\n", md->md_name); 448132904Spjd printf(" mid: %u\n", (u_int)md->md_mid); 449132904Spjd printf(" did: %u\n", (u_int)md->md_did); 450132904Spjd printf(" all: %u\n", (u_int)md->md_all); 451139213Spjd printf(" genid: %u\n", (u_int)md->md_genid); 452132904Spjd printf(" syncid: %u\n", (u_int)md->md_syncid); 453132904Spjd printf(" priority: %u\n", (u_int)md->md_priority); 454132904Spjd printf(" slice: %u\n", (u_int)md->md_slice); 455132904Spjd printf(" balance: %s\n", balance_name((u_int)md->md_balance)); 456132904Spjd printf(" mediasize: %jd\n", (intmax_t)md->md_mediasize); 457132904Spjd printf("sectorsize: %u\n", (u_int)md->md_sectorsize); 458132904Spjd printf("syncoffset: %jd\n", (intmax_t)md->md_sync_offset); 459132904Spjd printf(" mflags:"); 460132904Spjd if (md->md_mflags == 0) 461132904Spjd printf(" NONE"); 462132904Spjd else { 463163888Spjd if ((md->md_mflags & G_MIRROR_DEVICE_FLAG_NOFAILSYNC) != 0) 464163888Spjd printf(" NOFAILSYNC"); 465132904Spjd if ((md->md_mflags & G_MIRROR_DEVICE_FLAG_NOAUTOSYNC) != 0) 466132904Spjd printf(" NOAUTOSYNC"); 467132904Spjd } 468132904Spjd printf("\n"); 469132904Spjd printf(" dflags:"); 470133527Spjd if (md->md_dflags == 0) 471132904Spjd printf(" NONE"); 472132904Spjd else { 473132904Spjd if ((md->md_dflags & G_MIRROR_DISK_FLAG_DIRTY) != 0) 474132904Spjd printf(" DIRTY"); 475132904Spjd if ((md->md_dflags & G_MIRROR_DISK_FLAG_SYNCHRONIZING) != 0) 476132904Spjd printf(" SYNCHRONIZING"); 477132904Spjd if ((md->md_dflags & G_MIRROR_DISK_FLAG_FORCE_SYNC) != 0) 478132904Spjd printf(" FORCE_SYNC"); 479132904Spjd if ((md->md_dflags & G_MIRROR_DISK_FLAG_INACTIVE) != 0) 480132904Spjd printf(" INACTIVE"); 481132904Spjd } 482132904Spjd printf("\n"); 483133373Spjd printf("hcprovider: %s\n", md->md_provider); 484142727Spjd printf(" provsize: %ju\n", (uintmax_t)md->md_provsize); 485132904Spjd bzero(hash, sizeof(hash)); 486132904Spjd for (i = 0; i < 16; i++) { 487132904Spjd hash[i * 2] = hex[md->md_hash[i] >> 4]; 488132904Spjd hash[i * 2 + 1] = hex[md->md_hash[i] & 0x0f]; 489132904Spjd } 490132904Spjd printf(" MD5 hash: %s\n", hash); 491132904Spjd} 492132904Spjd#endif /* !_G_MIRROR_H_ */ 493