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FreeBSD ZFS
The Zettabyte File System
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sys/spa.h
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00001 /* 00002 * CDDL HEADER START 00003 * 00004 * The contents of this file are subject to the terms of the 00005 * Common Development and Distribution License (the "License"). 00006 * You may not use this file except in compliance with the License. 00007 * 00008 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 00009 * or http://www.opensolaris.org/os/licensing. 00010 * See the License for the specific language governing permissions 00011 * and limitations under the License. 00012 * 00013 * When distributing Covered Code, include this CDDL HEADER in each 00014 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 00015 * If applicable, add the following below this CDDL HEADER, with the 00016 * fields enclosed by brackets "[]" replaced with your own identifying 00017 * information: Portions Copyright [yyyy] [name of copyright owner] 00018 * 00019 * CDDL HEADER END 00020 */ 00021 /* 00022 * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved. 00023 * Copyright (c) 2012 by Delphix. All rights reserved. 00024 * Copyright 2011 Nexenta Systems, Inc. All rights reserved. 00025 */ 00026 00027 #ifndef _SYS_SPA_H 00028 #define _SYS_SPA_H 00029 00030 #include <sys/avl.h> 00031 #include <sys/zfs_context.h> 00032 #include <sys/nvpair.h> 00033 #include <sys/sysmacros.h> 00034 #include <sys/types.h> 00035 #include <sys/fs/zfs.h> 00036 00037 #ifdef __cplusplus 00038 extern "C" { 00039 #endif 00040 00041 /* 00042 * Forward references that lots of things need. 00043 */ 00044 typedef struct spa spa_t; 00045 typedef struct vdev vdev_t; 00046 typedef struct metaslab metaslab_t; 00047 typedef struct metaslab_group metaslab_group_t; 00048 typedef struct metaslab_class metaslab_class_t; 00049 typedef struct zio zio_t; 00050 typedef struct zilog zilog_t; 00051 typedef struct spa_aux_vdev spa_aux_vdev_t; 00052 typedef struct ddt ddt_t; 00053 typedef struct ddt_entry ddt_entry_t; 00054 struct dsl_pool; 00055 00060 #define BF32_DECODE(x, low, len) P2PHASE((x) >> (low), 1U << (len)) 00061 #define BF64_DECODE(x, low, len) P2PHASE((x) >> (low), 1ULL << (len)) 00062 #define BF32_ENCODE(x, low, len) (P2PHASE((x), 1U << (len)) << (low)) 00063 #define BF64_ENCODE(x, low, len) (P2PHASE((x), 1ULL << (len)) << (low)) 00064 00065 #define BF32_GET(x, low, len) BF32_DECODE(x, low, len) 00066 #define BF64_GET(x, low, len) BF64_DECODE(x, low, len) 00067 00068 #define BF32_SET(x, low, len, val) \ 00069 ((x) ^= BF32_ENCODE((x >> low) ^ (val), low, len)) 00070 #define BF64_SET(x, low, len, val) \ 00071 ((x) ^= BF64_ENCODE((x >> low) ^ (val), low, len)) 00072 00073 #define BF32_GET_SB(x, low, len, shift, bias) \ 00074 ((BF32_GET(x, low, len) + (bias)) << (shift)) 00075 #define BF64_GET_SB(x, low, len, shift, bias) \ 00076 ((BF64_GET(x, low, len) + (bias)) << (shift)) 00077 00078 #define BF32_SET_SB(x, low, len, shift, bias, val) \ 00079 BF32_SET(x, low, len, ((val) >> (shift)) - (bias)) 00080 #define BF64_SET_SB(x, low, len, shift, bias, val) \ 00081 BF64_SET(x, low, len, ((val) >> (shift)) - (bias)) 00082 00084 #define SPA_MINBLOCKSHIFT 9 00085 #define SPA_MAXBLOCKSHIFT 17 00086 #define SPA_MINBLOCKSIZE (1ULL << SPA_MINBLOCKSHIFT) 00087 #define SPA_MAXBLOCKSIZE (1ULL << SPA_MAXBLOCKSHIFT) 00088 00094 #define SPA_BLOCKSIZES (SPA_MAXBLOCKSHIFT - SPA_MINBLOCKSHIFT + 1) 00095 00099 #define SPA_CONFIG_BLOCKSIZE (1ULL << 14) 00100 00101 #define SPA_LSIZEBITS 16 /* LSIZE up to 32M (2^16 * 512) */ 00102 #define SPA_PSIZEBITS 16 /* PSIZE up to 32M (2^16 * 512) */ 00103 00110 #define SPA_ASIZEBITS 24 /* ASIZE up to 64 times larger */ 00111 00116 typedef struct dva { 00117 uint64_t dva_word[2]; 00118 } dva_t; 00119 00123 typedef struct zio_cksum { 00124 uint64_t zc_word[4]; 00125 } zio_cksum_t; 00126 00127 #define SPA_BLKPTRSHIFT 7 00128 #define SPA_DVAS_PER_BP 3 00190 typedef struct blkptr { 00191 dva_t blk_dva[SPA_DVAS_PER_BP]; 00192 uint64_t blk_prop; 00193 uint64_t blk_pad[2]; 00194 uint64_t blk_phys_birth; 00195 uint64_t blk_birth; 00196 uint64_t blk_fill; 00197 zio_cksum_t blk_cksum; 00198 } blkptr_t; 00199 00204 #define DVA_GET_ASIZE(dva) \ 00205 BF64_GET_SB((dva)->dva_word[0], 0, 24, SPA_MINBLOCKSHIFT, 0) 00206 #define DVA_SET_ASIZE(dva, x) \ 00207 BF64_SET_SB((dva)->dva_word[0], 0, 24, SPA_MINBLOCKSHIFT, 0, x) 00208 00209 #define DVA_GET_GRID(dva) BF64_GET((dva)->dva_word[0], 24, 8) 00210 #define DVA_SET_GRID(dva, x) BF64_SET((dva)->dva_word[0], 24, 8, x) 00211 00212 #define DVA_GET_VDEV(dva) BF64_GET((dva)->dva_word[0], 32, 32) 00213 #define DVA_SET_VDEV(dva, x) BF64_SET((dva)->dva_word[0], 32, 32, x) 00214 00215 #define DVA_GET_OFFSET(dva) \ 00216 BF64_GET_SB((dva)->dva_word[1], 0, 63, SPA_MINBLOCKSHIFT, 0) 00217 #define DVA_SET_OFFSET(dva, x) \ 00218 BF64_SET_SB((dva)->dva_word[1], 0, 63, SPA_MINBLOCKSHIFT, 0, x) 00219 00220 #define DVA_GET_GANG(dva) BF64_GET((dva)->dva_word[1], 63, 1) 00221 #define DVA_SET_GANG(dva, x) BF64_SET((dva)->dva_word[1], 63, 1, x) 00222 00223 #define BP_GET_LSIZE(bp) \ 00224 BF64_GET_SB((bp)->blk_prop, 0, 16, SPA_MINBLOCKSHIFT, 1) 00225 #define BP_SET_LSIZE(bp, x) \ 00226 BF64_SET_SB((bp)->blk_prop, 0, 16, SPA_MINBLOCKSHIFT, 1, x) 00227 00228 #define BP_GET_PSIZE(bp) \ 00229 BF64_GET_SB((bp)->blk_prop, 16, 16, SPA_MINBLOCKSHIFT, 1) 00230 #define BP_SET_PSIZE(bp, x) \ 00231 BF64_SET_SB((bp)->blk_prop, 16, 16, SPA_MINBLOCKSHIFT, 1, x) 00232 00233 #define BP_GET_COMPRESS(bp) BF64_GET((bp)->blk_prop, 32, 8) 00234 #define BP_SET_COMPRESS(bp, x) BF64_SET((bp)->blk_prop, 32, 8, x) 00235 00236 #define BP_GET_CHECKSUM(bp) BF64_GET((bp)->blk_prop, 40, 8) 00237 #define BP_SET_CHECKSUM(bp, x) BF64_SET((bp)->blk_prop, 40, 8, x) 00238 00239 #define BP_GET_TYPE(bp) BF64_GET((bp)->blk_prop, 48, 8) 00240 #define BP_SET_TYPE(bp, x) BF64_SET((bp)->blk_prop, 48, 8, x) 00241 00242 #define BP_GET_LEVEL(bp) BF64_GET((bp)->blk_prop, 56, 5) 00243 #define BP_SET_LEVEL(bp, x) BF64_SET((bp)->blk_prop, 56, 5, x) 00244 00245 #define BP_GET_PROP_BIT_61(bp) BF64_GET((bp)->blk_prop, 61, 1) 00246 #define BP_SET_PROP_BIT_61(bp, x) BF64_SET((bp)->blk_prop, 61, 1, x) 00247 00248 #define BP_GET_DEDUP(bp) BF64_GET((bp)->blk_prop, 62, 1) 00249 #define BP_SET_DEDUP(bp, x) BF64_SET((bp)->blk_prop, 62, 1, x) 00250 00251 #define BP_GET_BYTEORDER(bp) (0 - BF64_GET((bp)->blk_prop, 63, 1)) 00252 #define BP_SET_BYTEORDER(bp, x) BF64_SET((bp)->blk_prop, 63, 1, x) 00253 00254 #define BP_PHYSICAL_BIRTH(bp) \ 00255 ((bp)->blk_phys_birth ? (bp)->blk_phys_birth : (bp)->blk_birth) 00256 00257 #define BP_SET_BIRTH(bp, logical, physical) \ 00258 { \ 00259 (bp)->blk_birth = (logical); \ 00260 (bp)->blk_phys_birth = ((logical) == (physical) ? 0 : (physical)); \ 00261 } 00262 00263 #define BP_GET_ASIZE(bp) \ 00264 (DVA_GET_ASIZE(&(bp)->blk_dva[0]) + DVA_GET_ASIZE(&(bp)->blk_dva[1]) + \ 00265 DVA_GET_ASIZE(&(bp)->blk_dva[2])) 00266 00267 #define BP_GET_UCSIZE(bp) \ 00268 ((BP_GET_LEVEL(bp) > 0 || DMU_OT_IS_METADATA(BP_GET_TYPE(bp))) ? \ 00269 BP_GET_PSIZE(bp) : BP_GET_LSIZE(bp)) 00270 00271 #define BP_GET_NDVAS(bp) \ 00272 (!!DVA_GET_ASIZE(&(bp)->blk_dva[0]) + \ 00273 !!DVA_GET_ASIZE(&(bp)->blk_dva[1]) + \ 00274 !!DVA_GET_ASIZE(&(bp)->blk_dva[2])) 00275 00276 #define BP_COUNT_GANG(bp) \ 00277 (DVA_GET_GANG(&(bp)->blk_dva[0]) + \ 00278 DVA_GET_GANG(&(bp)->blk_dva[1]) + \ 00279 DVA_GET_GANG(&(bp)->blk_dva[2])) 00280 00281 #define DVA_EQUAL(dva1, dva2) \ 00282 ((dva1)->dva_word[1] == (dva2)->dva_word[1] && \ 00283 (dva1)->dva_word[0] == (dva2)->dva_word[0]) 00284 00285 #define BP_EQUAL(bp1, bp2) \ 00286 (BP_PHYSICAL_BIRTH(bp1) == BP_PHYSICAL_BIRTH(bp2) && \ 00287 DVA_EQUAL(&(bp1)->blk_dva[0], &(bp2)->blk_dva[0]) && \ 00288 DVA_EQUAL(&(bp1)->blk_dva[1], &(bp2)->blk_dva[1]) && \ 00289 DVA_EQUAL(&(bp1)->blk_dva[2], &(bp2)->blk_dva[2])) 00290 00291 #define ZIO_CHECKSUM_EQUAL(zc1, zc2) \ 00292 (0 == (((zc1).zc_word[0] - (zc2).zc_word[0]) | \ 00293 ((zc1).zc_word[1] - (zc2).zc_word[1]) | \ 00294 ((zc1).zc_word[2] - (zc2).zc_word[2]) | \ 00295 ((zc1).zc_word[3] - (zc2).zc_word[3]))) 00296 00297 #define DVA_IS_VALID(dva) (DVA_GET_ASIZE(dva) != 0) 00298 00299 #define ZIO_SET_CHECKSUM(zcp, w0, w1, w2, w3) \ 00300 { \ 00301 (zcp)->zc_word[0] = w0; \ 00302 (zcp)->zc_word[1] = w1; \ 00303 (zcp)->zc_word[2] = w2; \ 00304 (zcp)->zc_word[3] = w3; \ 00305 } 00306 00307 #define BP_IDENTITY(bp) (&(bp)->blk_dva[0]) 00308 #define BP_IS_GANG(bp) DVA_GET_GANG(BP_IDENTITY(bp)) 00309 #define BP_IS_HOLE(bp) ((bp)->blk_birth == 0) 00310 00313 #define BP_IS_RAIDZ(bp) (DVA_GET_ASIZE(&(bp)->blk_dva[0]) > \ 00314 BP_GET_PSIZE(bp)) 00315 00316 #define BP_ZERO(bp) \ 00317 { \ 00318 (bp)->blk_dva[0].dva_word[0] = 0; \ 00319 (bp)->blk_dva[0].dva_word[1] = 0; \ 00320 (bp)->blk_dva[1].dva_word[0] = 0; \ 00321 (bp)->blk_dva[1].dva_word[1] = 0; \ 00322 (bp)->blk_dva[2].dva_word[0] = 0; \ 00323 (bp)->blk_dva[2].dva_word[1] = 0; \ 00324 (bp)->blk_prop = 0; \ 00325 (bp)->blk_pad[0] = 0; \ 00326 (bp)->blk_pad[1] = 0; \ 00327 (bp)->blk_phys_birth = 0; \ 00328 (bp)->blk_birth = 0; \ 00329 (bp)->blk_fill = 0; \ 00330 ZIO_SET_CHECKSUM(&(bp)->blk_cksum, 0, 0, 0, 0); \ 00331 } 00332 00337 #if BYTE_ORDER == _BIG_ENDIAN 00338 #define ZFS_HOST_BYTEORDER (0ULL) 00339 #else 00340 #define ZFS_HOST_BYTEORDER (-1ULL) 00341 #endif 00342 00343 #define BP_SHOULD_BYTESWAP(bp) (BP_GET_BYTEORDER(bp) != ZFS_HOST_BYTEORDER) 00344 00345 #define BP_SPRINTF_LEN 320 00346 00352 #define SPRINTF_BLKPTR(func, ws, buf, bp, type, checksum, compress) \ 00353 { \ 00354 static const char *copyname[] = \ 00355 { "zero", "single", "double", "triple" }; \ 00356 int size = BP_SPRINTF_LEN; \ 00357 int len = 0; \ 00358 int copies = 0; \ 00359 \ 00360 if (bp == NULL) { \ 00361 len = func(buf + len, size - len, "<NULL>"); \ 00362 } else if (BP_IS_HOLE(bp)) { \ 00363 len = func(buf + len, size - len, "<hole>"); \ 00364 } else { \ 00365 for (int d = 0; d < BP_GET_NDVAS(bp); d++) { \ 00366 const dva_t *dva = &bp->blk_dva[d]; \ 00367 if (DVA_IS_VALID(dva)) \ 00368 copies++; \ 00369 len += func(buf + len, size - len, \ 00370 "DVA[%d]=<%llu:%llx:%llx>%c", d, \ 00371 (u_longlong_t)DVA_GET_VDEV(dva), \ 00372 (u_longlong_t)DVA_GET_OFFSET(dva), \ 00373 (u_longlong_t)DVA_GET_ASIZE(dva), \ 00374 ws); \ 00375 } \ 00376 if (BP_IS_GANG(bp) && \ 00377 DVA_GET_ASIZE(&bp->blk_dva[2]) <= \ 00378 DVA_GET_ASIZE(&bp->blk_dva[1]) / 2) \ 00379 copies--; \ 00380 len += func(buf + len, size - len, \ 00381 "[L%llu %s] %s %s %s %s %s %s%c" \ 00382 "size=%llxL/%llxP birth=%lluL/%lluP fill=%llu%c" \ 00383 "cksum=%llx:%llx:%llx:%llx", \ 00384 (u_longlong_t)BP_GET_LEVEL(bp), \ 00385 type, \ 00386 checksum, \ 00387 compress, \ 00388 BP_GET_BYTEORDER(bp) == 0 ? "BE" : "LE", \ 00389 BP_IS_GANG(bp) ? "gang" : "contiguous", \ 00390 BP_GET_DEDUP(bp) ? "dedup" : "unique", \ 00391 copyname[copies], \ 00392 ws, \ 00393 (u_longlong_t)BP_GET_LSIZE(bp), \ 00394 (u_longlong_t)BP_GET_PSIZE(bp), \ 00395 (u_longlong_t)bp->blk_birth, \ 00396 (u_longlong_t)BP_PHYSICAL_BIRTH(bp), \ 00397 (u_longlong_t)bp->blk_fill, \ 00398 ws, \ 00399 (u_longlong_t)bp->blk_cksum.zc_word[0], \ 00400 (u_longlong_t)bp->blk_cksum.zc_word[1], \ 00401 (u_longlong_t)bp->blk_cksum.zc_word[2], \ 00402 (u_longlong_t)bp->blk_cksum.zc_word[3]); \ 00403 } \ 00404 ASSERT(len < size); \ 00405 } 00406 00407 #include <sys/dmu.h> 00408 00409 #define BP_GET_BUFC_TYPE(bp) \ 00410 (((BP_GET_LEVEL(bp) > 0) || (DMU_OT_IS_METADATA(BP_GET_TYPE(bp)))) ? \ 00411 ARC_BUFC_METADATA : ARC_BUFC_DATA) 00412 00413 typedef enum spa_import_type { 00414 SPA_IMPORT_EXISTING, 00415 SPA_IMPORT_ASSEMBLE 00416 } spa_import_type_t; 00417 00418 /* state manipulation functions */ 00419 extern int spa_open(const char *pool, spa_t **, void *tag); 00420 extern int spa_open_rewind(const char *pool, spa_t **, void *tag, 00421 nvlist_t *policy, nvlist_t **config); 00422 extern int spa_get_stats(const char *pool, nvlist_t **config, char *altroot, 00423 size_t buflen); 00424 extern int spa_create(const char *pool, nvlist_t *config, nvlist_t *props, 00425 const char *history_str, nvlist_t *zplprops); 00426 #if defined(sun) 00427 extern int spa_import_rootpool(char *devpath, char *devid); 00428 #else 00429 extern int spa_import_rootpool(const char *name); 00430 #endif 00431 extern int spa_import(const char *pool, nvlist_t *config, nvlist_t *props, 00432 uint64_t flags); 00433 extern nvlist_t *spa_tryimport(nvlist_t *tryconfig); 00434 extern int spa_destroy(char *pool); 00435 extern int spa_export(char *pool, nvlist_t **oldconfig, boolean_t force, 00436 boolean_t hardforce); 00437 extern int spa_reset(char *pool); 00438 extern void spa_async_request(spa_t *spa, int flag); 00439 extern void spa_async_unrequest(spa_t *spa, int flag); 00440 extern void spa_async_suspend(spa_t *spa); 00441 extern void spa_async_resume(spa_t *spa); 00442 extern spa_t *spa_inject_addref(char *pool); 00443 extern void spa_inject_delref(spa_t *spa); 00444 extern void spa_scan_stat_init(spa_t *spa); 00445 extern int spa_scan_get_stats(spa_t *spa, pool_scan_stat_t *ps); 00446 00447 #define SPA_ASYNC_CONFIG_UPDATE 0x01 00448 #define SPA_ASYNC_REMOVE 0x02 00449 #define SPA_ASYNC_PROBE 0x04 00450 #define SPA_ASYNC_RESILVER_DONE 0x08 00451 #define SPA_ASYNC_RESILVER 0x10 00452 #define SPA_ASYNC_AUTOEXPAND 0x20 00453 #define SPA_ASYNC_REMOVE_DONE 0x40 00454 #define SPA_ASYNC_REMOVE_STOP 0x80 00455 00460 #define SPA_REMOVE_UNSPARE 0x01 00461 #define SPA_REMOVE_DONE 0x02 00462 00464 /* device manipulation */ 00465 extern int spa_vdev_add(spa_t *spa, nvlist_t *nvroot); 00466 extern int spa_vdev_attach(spa_t *spa, uint64_t guid, nvlist_t *nvroot, 00467 int replacing); 00468 extern int spa_vdev_detach(spa_t *spa, uint64_t guid, uint64_t pguid, 00469 int replace_done); 00470 extern int spa_vdev_remove(spa_t *spa, uint64_t guid, boolean_t unspare); 00471 extern boolean_t spa_vdev_remove_active(spa_t *spa); 00472 extern int spa_vdev_setpath(spa_t *spa, uint64_t guid, const char *newpath); 00473 extern int spa_vdev_setfru(spa_t *spa, uint64_t guid, const char *newfru); 00474 extern int spa_vdev_split_mirror(spa_t *spa, char *newname, nvlist_t *config, 00475 nvlist_t *props, boolean_t exp); 00476 00477 /* spare state (which is global across all pools) */ 00478 extern void spa_spare_add(vdev_t *vd); 00479 extern void spa_spare_remove(vdev_t *vd); 00480 extern boolean_t spa_spare_exists(uint64_t guid, uint64_t *pool, int *refcnt); 00481 extern void spa_spare_activate(vdev_t *vd); 00482 00483 /* L2ARC state (which is global across all pools) */ 00484 extern void spa_l2cache_add(vdev_t *vd); 00485 extern void spa_l2cache_remove(vdev_t *vd); 00486 extern boolean_t spa_l2cache_exists(uint64_t guid, uint64_t *pool); 00487 extern void spa_l2cache_activate(vdev_t *vd); 00488 extern void spa_l2cache_drop(spa_t *spa); 00489 00490 /* scanning */ 00491 extern int spa_scan(spa_t *spa, pool_scan_func_t func); 00492 extern int spa_scan_stop(spa_t *spa); 00493 00494 /* spa syncing */ 00495 extern void spa_sync(spa_t *spa, uint64_t txg); 00496 extern void spa_sync_allpools(void); 00497 00504 #define SYNC_PASS_DEFERRED_FREE 2 00505 #define SYNC_PASS_DONT_COMPRESS 4 00506 #define SYNC_PASS_REWRITE 1 00509 extern kmutex_t spa_namespace_lock; 00510 00511 /* 00512 * SPA configuration functions in spa_config.c 00513 */ 00514 00515 #define SPA_CONFIG_UPDATE_POOL 0 00516 #define SPA_CONFIG_UPDATE_VDEVS 1 00517 00518 extern void spa_config_sync(spa_t *, boolean_t, boolean_t); 00519 extern void spa_config_load(void); 00520 extern nvlist_t *spa_all_configs(uint64_t *); 00521 extern void spa_config_set(spa_t *spa, nvlist_t *config); 00522 extern nvlist_t *spa_config_generate(spa_t *spa, vdev_t *vd, uint64_t txg, 00523 int getstats); 00524 extern void spa_config_update(spa_t *spa, int what); 00525 00526 /* 00527 * Miscellaneous SPA routines in spa_misc.c 00528 */ 00529 00530 /* Namespace manipulation */ 00531 extern spa_t *spa_lookup(const char *name); 00532 extern spa_t *spa_add(const char *name, nvlist_t *config, const char *altroot); 00533 extern void spa_remove(spa_t *spa); 00534 extern spa_t *spa_next(spa_t *prev); 00535 00536 /* Refcount functions */ 00537 extern void spa_open_ref(spa_t *spa, void *tag); 00538 extern void spa_close(spa_t *spa, void *tag); 00539 extern boolean_t spa_refcount_zero(spa_t *spa); 00540 00541 #define SCL_NONE 0x00 00542 #define SCL_CONFIG 0x01 00543 #define SCL_STATE 0x02 00544 #define SCL_L2ARC 0x04 00545 #define SCL_ALLOC 0x08 00546 #define SCL_ZIO 0x10 00547 #define SCL_FREE 0x20 00548 #define SCL_VDEV 0x40 00549 #define SCL_LOCKS 7 00550 #define SCL_ALL ((1 << SCL_LOCKS) - 1) 00551 #define SCL_STATE_ALL (SCL_STATE | SCL_L2ARC | SCL_ZIO) 00552 00553 /* Pool configuration locks */ 00554 extern int spa_config_tryenter(spa_t *spa, int locks, void *tag, krw_t rw); 00555 extern void spa_config_enter(spa_t *spa, int locks, void *tag, krw_t rw); 00556 extern void spa_config_exit(spa_t *spa, int locks, void *tag); 00557 extern int spa_config_held(spa_t *spa, int locks, krw_t rw); 00558 00559 /* Pool vdev add/remove lock */ 00560 extern uint64_t spa_vdev_enter(spa_t *spa); 00561 extern uint64_t spa_vdev_config_enter(spa_t *spa); 00562 extern void spa_vdev_config_exit(spa_t *spa, vdev_t *vd, uint64_t txg, 00563 int error, char *tag); 00564 extern int spa_vdev_exit(spa_t *spa, vdev_t *vd, uint64_t txg, int error); 00565 00566 /* Pool vdev state change lock */ 00567 extern void spa_vdev_state_enter(spa_t *spa, int oplock); 00568 extern int spa_vdev_state_exit(spa_t *spa, vdev_t *vd, int error); 00569 00571 typedef enum spa_log_state { 00572 SPA_LOG_UNKNOWN = 0, 00573 SPA_LOG_MISSING, 00574 SPA_LOG_CLEAR, 00575 SPA_LOG_GOOD, 00576 } spa_log_state_t; 00577 00578 extern spa_log_state_t spa_get_log_state(spa_t *spa); 00579 extern void spa_set_log_state(spa_t *spa, spa_log_state_t state); 00580 extern int spa_offline_log(spa_t *spa); 00581 00582 extern void spa_claim_notify(zio_t *zio); 00583 00584 /* Accessor functions */ 00585 extern boolean_t spa_shutting_down(spa_t *spa); 00586 extern struct dsl_pool *spa_get_dsl(spa_t *spa); 00587 extern boolean_t spa_is_initializing(spa_t *spa); 00588 extern blkptr_t *spa_get_rootblkptr(spa_t *spa); 00589 extern void spa_set_rootblkptr(spa_t *spa, const blkptr_t *bp); 00590 extern void spa_altroot(spa_t *, char *, size_t); 00591 extern int spa_sync_pass(spa_t *spa); 00592 extern char *spa_name(spa_t *spa); 00593 extern uint64_t spa_guid(spa_t *spa); 00594 extern uint64_t spa_load_guid(spa_t *spa); 00595 extern uint64_t spa_last_synced_txg(spa_t *spa); 00596 extern uint64_t spa_first_txg(spa_t *spa); 00597 extern uint64_t spa_syncing_txg(spa_t *spa); 00598 extern uint64_t spa_version(spa_t *spa); 00599 extern pool_state_t spa_state(spa_t *spa); 00600 extern spa_load_state_t spa_load_state(spa_t *spa); 00601 extern uint64_t spa_freeze_txg(spa_t *spa); 00602 extern uint64_t spa_get_asize(spa_t *spa, uint64_t lsize); 00603 extern uint64_t spa_get_dspace(spa_t *spa); 00604 extern void spa_update_dspace(spa_t *spa); 00605 extern uint64_t spa_version(spa_t *spa); 00606 extern boolean_t spa_deflate(spa_t *spa); 00607 extern metaslab_class_t *spa_normal_class(spa_t *spa); 00608 extern metaslab_class_t *spa_log_class(spa_t *spa); 00609 extern int spa_max_replication(spa_t *spa); 00610 extern int spa_prev_software_version(spa_t *spa); 00611 extern int spa_busy(void); 00612 extern uint8_t spa_get_failmode(spa_t *spa); 00613 extern boolean_t spa_suspended(spa_t *spa); 00614 extern uint64_t spa_bootfs(spa_t *spa); 00615 extern uint64_t spa_delegation(spa_t *spa); 00616 extern objset_t *spa_meta_objset(spa_t *spa); 00617 00618 /* Miscellaneous support routines */ 00619 extern void spa_activate_mos_feature(spa_t *spa, const char *feature); 00620 extern void spa_deactivate_mos_feature(spa_t *spa, const char *feature); 00621 extern int spa_rename(const char *oldname, const char *newname); 00622 extern spa_t *spa_by_guid(uint64_t pool_guid, uint64_t device_guid); 00623 extern boolean_t spa_guid_exists(uint64_t pool_guid, uint64_t device_guid); 00624 extern char *spa_strdup(const char *); 00625 extern void spa_strfree(char *); 00626 extern uint64_t spa_get_random(uint64_t range); 00627 extern uint64_t spa_generate_guid(spa_t *spa); 00628 extern void sprintf_blkptr(char *buf, const blkptr_t *bp); 00629 extern void spa_freeze(spa_t *spa); 00630 extern int spa_change_guid(spa_t *spa); 00631 extern void spa_upgrade(spa_t *spa, uint64_t version); 00632 extern void spa_evict_all(void); 00633 extern vdev_t *spa_lookup_by_guid(spa_t *spa, uint64_t guid, 00634 boolean_t l2cache); 00635 extern boolean_t spa_has_spare(spa_t *, uint64_t guid); 00636 extern uint64_t dva_get_dsize_sync(spa_t *spa, const dva_t *dva); 00637 extern uint64_t bp_get_dsize_sync(spa_t *spa, const blkptr_t *bp); 00638 extern uint64_t bp_get_dsize(spa_t *spa, const blkptr_t *bp); 00639 extern boolean_t spa_has_slogs(spa_t *spa); 00640 extern boolean_t spa_is_root(spa_t *spa); 00641 extern boolean_t spa_writeable(spa_t *spa); 00642 00643 extern int spa_mode(spa_t *spa); 00644 extern uint64_t zfs_strtonum(const char *str, char **nptr); 00645 #define strtonum(str, nptr) zfs_strtonum((str), (nptr)) 00646 00648 typedef enum history_log_type { 00649 LOG_CMD_POOL_CREATE, 00650 LOG_CMD_NORMAL, 00651 LOG_INTERNAL 00652 } history_log_type_t; 00653 00654 typedef struct history_arg { 00655 char *ha_history_str; 00656 history_log_type_t ha_log_type; 00657 history_internal_events_t ha_event; 00658 char *ha_zone; 00659 uid_t ha_uid; 00660 } history_arg_t; 00661 00662 extern char *spa_his_ievent_table[]; 00663 00664 extern void spa_history_create_obj(spa_t *spa, dmu_tx_t *tx); 00665 extern int spa_history_get(spa_t *spa, uint64_t *offset, uint64_t *len_read, 00666 char *his_buf); 00667 extern int spa_history_log(spa_t *spa, const char *his_buf, 00668 history_log_type_t what); 00669 extern void spa_history_log_internal(history_internal_events_t event, 00670 spa_t *spa, dmu_tx_t *tx, const char *fmt, ...); 00671 extern void spa_history_log_version(spa_t *spa, history_internal_events_t evt); 00672 00673 /* error handling */ 00674 struct zbookmark; 00675 extern void spa_log_error(spa_t *spa, zio_t *zio); 00676 extern void zfs_ereport_post(const char *cls, spa_t *spa, vdev_t *vd, 00677 zio_t *zio, uint64_t stateoroffset, uint64_t length); 00678 extern void zfs_post_remove(spa_t *spa, vdev_t *vd); 00679 extern void zfs_post_state_change(spa_t *spa, vdev_t *vd); 00680 extern void zfs_post_autoreplace(spa_t *spa, vdev_t *vd); 00681 extern uint64_t spa_get_errlog_size(spa_t *spa); 00682 extern int spa_get_errlog(spa_t *spa, void *uaddr, size_t *count); 00683 extern void spa_errlog_rotate(spa_t *spa); 00684 extern void spa_errlog_drain(spa_t *spa); 00685 extern void spa_errlog_sync(spa_t *spa, uint64_t txg); 00686 extern void spa_get_errlists(spa_t *spa, avl_tree_t *last, avl_tree_t *scrub); 00687 00688 /* vdev cache */ 00689 extern void vdev_cache_stat_init(void); 00690 extern void vdev_cache_stat_fini(void); 00691 00692 /* Initialization and termination */ 00693 extern void spa_init(int flags); 00694 extern void spa_fini(void); 00695 extern void spa_boot_init(); 00696 00697 /* properties */ 00698 extern int spa_prop_set(spa_t *spa, nvlist_t *nvp); 00699 extern int spa_prop_get(spa_t *spa, nvlist_t **nvp); 00700 extern void spa_prop_clear_bootfs(spa_t *spa, uint64_t obj, dmu_tx_t *tx); 00701 extern void spa_configfile_set(spa_t *, nvlist_t *, boolean_t); 00702 00703 /* asynchronous event notification */ 00704 extern void spa_event_notify(spa_t *spa, vdev_t *vdev, const char *name); 00705 00706 #ifdef ZFS_DEBUG 00707 #define dprintf_bp(bp, fmt, ...) do { \ 00708 if (zfs_flags & ZFS_DEBUG_DPRINTF) { \ 00709 char *__blkbuf = kmem_alloc(BP_SPRINTF_LEN, KM_SLEEP); \ 00710 sprintf_blkptr(__blkbuf, (bp)); \ 00711 dprintf(fmt " %s\n", __VA_ARGS__, __blkbuf); \ 00712 kmem_free(__blkbuf, BP_SPRINTF_LEN); \ 00713 } \ 00714 _NOTE(CONSTCOND) } while (0) 00715 #else 00716 #define dprintf_bp(bp, fmt, ...) 00717 #endif 00718 00719 extern boolean_t spa_debug_enabled(spa_t *spa); 00720 #define spa_dbgmsg(spa, ...) \ 00721 { \ 00722 if (spa_debug_enabled(spa)) \ 00723 zfs_dbgmsg(__VA_ARGS__); \ 00724 } 00725 00727 extern int spa_mode_global; 00728 00729 #ifdef __cplusplus 00730 } 00731 #endif 00732 00733 #endif /* _SYS_SPA_H */
