1fa9e4066Sahrens /* 2fa9e4066Sahrens * CDDL HEADER START 3fa9e4066Sahrens * 4fa9e4066Sahrens * The contents of this file are subject to the terms of the 5ea8dc4b6Seschrock * Common Development and Distribution License (the "License"). 6ea8dc4b6Seschrock * You may not use this file except in compliance with the License. 7fa9e4066Sahrens * 8fa9e4066Sahrens * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9fa9e4066Sahrens * or http://www.opensolaris.org/os/licensing. 10fa9e4066Sahrens * See the License for the specific language governing permissions 11fa9e4066Sahrens * and limitations under the License. 12fa9e4066Sahrens * 13fa9e4066Sahrens * When distributing Covered Code, include this CDDL HEADER in each 14fa9e4066Sahrens * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15fa9e4066Sahrens * If applicable, add the following below this CDDL HEADER, with the 16fa9e4066Sahrens * fields enclosed by brackets "[]" replaced with your own identifying 17fa9e4066Sahrens * information: Portions Copyright [yyyy] [name of copyright owner] 18fa9e4066Sahrens * 19fa9e4066Sahrens * CDDL HEADER END 20fa9e4066Sahrens */ 21fa9e4066Sahrens /* 22c67d9675Seschrock * Copyright 2006 Sun Microsystems, Inc. All rights reserved. 23fa9e4066Sahrens * Use is subject to license terms. 24fa9e4066Sahrens */ 25fa9e4066Sahrens 26fa9e4066Sahrens #ifndef _SYS_SPA_H 27fa9e4066Sahrens #define _SYS_SPA_H 28fa9e4066Sahrens 29fa9e4066Sahrens #pragma ident "%Z%%M% %I% %E% SMI" 30fa9e4066Sahrens 31fa9e4066Sahrens #include <sys/avl.h> 32fa9e4066Sahrens #include <sys/zfs_context.h> 33fa9e4066Sahrens #include <sys/nvpair.h> 34fa9e4066Sahrens #include <sys/sysmacros.h> 35fa9e4066Sahrens #include <sys/types.h> 36fa9e4066Sahrens #include <sys/fs/zfs.h> 37fa9e4066Sahrens 38fa9e4066Sahrens #ifdef __cplusplus 39fa9e4066Sahrens extern "C" { 40fa9e4066Sahrens #endif 41fa9e4066Sahrens 42fa9e4066Sahrens /* 43fa9e4066Sahrens * Forward references that lots of things need. 44fa9e4066Sahrens */ 45fa9e4066Sahrens typedef struct spa spa_t; 46fa9e4066Sahrens typedef struct vdev vdev_t; 47fa9e4066Sahrens typedef struct metaslab metaslab_t; 48fa9e4066Sahrens typedef struct zilog zilog_t; 49fa9e4066Sahrens typedef struct traverse_handle traverse_handle_t; 50fa9e4066Sahrens struct dsl_pool; 51fa9e4066Sahrens 52fa9e4066Sahrens /* 53fa9e4066Sahrens * General-purpose 32-bit and 64-bit bitfield encodings. 54fa9e4066Sahrens */ 55fa9e4066Sahrens #define BF32_DECODE(x, low, len) P2PHASE((x) >> (low), 1U << (len)) 56fa9e4066Sahrens #define BF64_DECODE(x, low, len) P2PHASE((x) >> (low), 1ULL << (len)) 57fa9e4066Sahrens #define BF32_ENCODE(x, low, len) (P2PHASE((x), 1U << (len)) << (low)) 58fa9e4066Sahrens #define BF64_ENCODE(x, low, len) (P2PHASE((x), 1ULL << (len)) << (low)) 59fa9e4066Sahrens 60fa9e4066Sahrens #define BF32_GET(x, low, len) BF32_DECODE(x, low, len) 61fa9e4066Sahrens #define BF64_GET(x, low, len) BF64_DECODE(x, low, len) 62fa9e4066Sahrens 63fa9e4066Sahrens #define BF32_SET(x, low, len, val) \ 645ad82045Snd ((x) ^= BF32_ENCODE((x >> low) ^ (val), low, len)) 65fa9e4066Sahrens #define BF64_SET(x, low, len, val) \ 665ad82045Snd ((x) ^= BF64_ENCODE((x >> low) ^ (val), low, len)) 67fa9e4066Sahrens 68fa9e4066Sahrens #define BF32_GET_SB(x, low, len, shift, bias) \ 69fa9e4066Sahrens ((BF32_GET(x, low, len) + (bias)) << (shift)) 70fa9e4066Sahrens #define BF64_GET_SB(x, low, len, shift, bias) \ 71fa9e4066Sahrens ((BF64_GET(x, low, len) + (bias)) << (shift)) 72fa9e4066Sahrens 73fa9e4066Sahrens #define BF32_SET_SB(x, low, len, shift, bias, val) \ 74fa9e4066Sahrens BF32_SET(x, low, len, ((val) >> (shift)) - (bias)) 75fa9e4066Sahrens #define BF64_SET_SB(x, low, len, shift, bias, val) \ 76fa9e4066Sahrens BF64_SET(x, low, len, ((val) >> (shift)) - (bias)) 77fa9e4066Sahrens 78fa9e4066Sahrens /* 79fa9e4066Sahrens * We currently support nine block sizes, from 512 bytes to 128K. 80fa9e4066Sahrens * We could go higher, but the benefits are near-zero and the cost 81fa9e4066Sahrens * of COWing a giant block to modify one byte would become excessive. 82fa9e4066Sahrens */ 83fa9e4066Sahrens #define SPA_MINBLOCKSHIFT 9 84fa9e4066Sahrens #define SPA_MAXBLOCKSHIFT 17 85fa9e4066Sahrens #define SPA_MINBLOCKSIZE (1ULL << SPA_MINBLOCKSHIFT) 86fa9e4066Sahrens #define SPA_MAXBLOCKSIZE (1ULL << SPA_MAXBLOCKSHIFT) 87fa9e4066Sahrens 88fa9e4066Sahrens #define SPA_BLOCKSIZES (SPA_MAXBLOCKSHIFT - SPA_MINBLOCKSHIFT + 1) 89fa9e4066Sahrens 90fa9e4066Sahrens /* 91fa9e4066Sahrens * The DVA size encodings for LSIZE and PSIZE support blocks up to 32MB. 92fa9e4066Sahrens * The ASIZE encoding should be at least 64 times larger (6 more bits) 93fa9e4066Sahrens * to support up to 4-way RAID-Z mirror mode with worst-case gang block 94fa9e4066Sahrens * overhead, three DVAs per bp, plus one more bit in case we do anything 95fa9e4066Sahrens * else that expands the ASIZE. 96fa9e4066Sahrens */ 97fa9e4066Sahrens #define SPA_LSIZEBITS 16 /* LSIZE up to 32M (2^16 * 512) */ 98fa9e4066Sahrens #define SPA_PSIZEBITS 16 /* PSIZE up to 32M (2^16 * 512) */ 99fa9e4066Sahrens #define SPA_ASIZEBITS 24 /* ASIZE up to 64 times larger */ 100fa9e4066Sahrens 101fa9e4066Sahrens /* 102fa9e4066Sahrens * All SPA data is represented by 128-bit data virtual addresses (DVAs). 103fa9e4066Sahrens * The members of the dva_t should be considered opaque outside the SPA. 104fa9e4066Sahrens */ 105fa9e4066Sahrens typedef struct dva { 106fa9e4066Sahrens uint64_t dva_word[2]; 107fa9e4066Sahrens } dva_t; 108fa9e4066Sahrens 109fa9e4066Sahrens /* 110fa9e4066Sahrens * Each block has a 256-bit checksum -- strong enough for cryptographic hashes. 111fa9e4066Sahrens */ 112fa9e4066Sahrens typedef struct zio_cksum { 113fa9e4066Sahrens uint64_t zc_word[4]; 114fa9e4066Sahrens } zio_cksum_t; 115fa9e4066Sahrens 116fa9e4066Sahrens /* 117fa9e4066Sahrens * Each block is described by its DVAs, time of birth, checksum, etc. 118fa9e4066Sahrens * The word-by-word, bit-by-bit layout of the blkptr is as follows: 119fa9e4066Sahrens * 120fa9e4066Sahrens * 64 56 48 40 32 24 16 8 0 121fa9e4066Sahrens * +-------+-------+-------+-------+-------+-------+-------+-------+ 122fa9e4066Sahrens * 0 | vdev1 | GRID | ASIZE | 123fa9e4066Sahrens * +-------+-------+-------+-------+-------+-------+-------+-------+ 124fa9e4066Sahrens * 1 |G| offset1 | 125fa9e4066Sahrens * +-------+-------+-------+-------+-------+-------+-------+-------+ 126fa9e4066Sahrens * 2 | vdev2 | GRID | ASIZE | 127fa9e4066Sahrens * +-------+-------+-------+-------+-------+-------+-------+-------+ 128fa9e4066Sahrens * 3 |G| offset2 | 129fa9e4066Sahrens * +-------+-------+-------+-------+-------+-------+-------+-------+ 130fa9e4066Sahrens * 4 | vdev3 | GRID | ASIZE | 131fa9e4066Sahrens * +-------+-------+-------+-------+-------+-------+-------+-------+ 132fa9e4066Sahrens * 5 |G| offset3 | 133fa9e4066Sahrens * +-------+-------+-------+-------+-------+-------+-------+-------+ 134fa9e4066Sahrens * 6 |E| lvl | type | cksum | comp | PSIZE | LSIZE | 135fa9e4066Sahrens * +-------+-------+-------+-------+-------+-------+-------+-------+ 136fa9e4066Sahrens * 7 | padding | 137fa9e4066Sahrens * +-------+-------+-------+-------+-------+-------+-------+-------+ 138fa9e4066Sahrens * 8 | padding | 139fa9e4066Sahrens * +-------+-------+-------+-------+-------+-------+-------+-------+ 140fa9e4066Sahrens * 9 | padding | 141fa9e4066Sahrens * +-------+-------+-------+-------+-------+-------+-------+-------+ 142fa9e4066Sahrens * a | birth txg | 143fa9e4066Sahrens * +-------+-------+-------+-------+-------+-------+-------+-------+ 144fa9e4066Sahrens * b | fill count | 145fa9e4066Sahrens * +-------+-------+-------+-------+-------+-------+-------+-------+ 146fa9e4066Sahrens * c | checksum[0] | 147fa9e4066Sahrens * +-------+-------+-------+-------+-------+-------+-------+-------+ 148fa9e4066Sahrens * d | checksum[1] | 149fa9e4066Sahrens * +-------+-------+-------+-------+-------+-------+-------+-------+ 150fa9e4066Sahrens * e | checksum[2] | 151fa9e4066Sahrens * +-------+-------+-------+-------+-------+-------+-------+-------+ 152fa9e4066Sahrens * f | checksum[3] | 153fa9e4066Sahrens * +-------+-------+-------+-------+-------+-------+-------+-------+ 154fa9e4066Sahrens * 155fa9e4066Sahrens * Legend: 156fa9e4066Sahrens * 157fa9e4066Sahrens * vdev virtual device ID 158fa9e4066Sahrens * offset offset into virtual device 159fa9e4066Sahrens * LSIZE logical size 160fa9e4066Sahrens * PSIZE physical size (after compression) 161fa9e4066Sahrens * ASIZE allocated size (including RAID-Z parity and gang block headers) 162fa9e4066Sahrens * GRID RAID-Z layout information (reserved for future use) 163fa9e4066Sahrens * cksum checksum function 164fa9e4066Sahrens * comp compression function 165fa9e4066Sahrens * G gang block indicator 166fa9e4066Sahrens * E endianness 167fa9e4066Sahrens * type DMU object type 168fa9e4066Sahrens * lvl level of indirection 169fa9e4066Sahrens * birth txg transaction group in which the block was born 170fa9e4066Sahrens * fill count number of non-zero blocks under this bp 171fa9e4066Sahrens * checksum[4] 256-bit checksum of the data this bp describes 172fa9e4066Sahrens */ 173fa9e4066Sahrens typedef struct blkptr { 174fa9e4066Sahrens dva_t blk_dva[3]; /* 128-bit Data Virtual Address */ 175fa9e4066Sahrens uint64_t blk_prop; /* size, compression, type, etc */ 176fa9e4066Sahrens uint64_t blk_pad[3]; /* Extra space for the future */ 177fa9e4066Sahrens uint64_t blk_birth; /* transaction group at birth */ 178fa9e4066Sahrens uint64_t blk_fill; /* fill count */ 179fa9e4066Sahrens zio_cksum_t blk_cksum; /* 256-bit checksum */ 180fa9e4066Sahrens } blkptr_t; 181fa9e4066Sahrens 182fa9e4066Sahrens #define SPA_BLKPTRSHIFT 7 /* blkptr_t is 128 bytes */ 183fa9e4066Sahrens #define SPA_DVAS_PER_BP 3 /* Number of DVAs in a bp */ 184fa9e4066Sahrens 185fa9e4066Sahrens /* 186fa9e4066Sahrens * Macros to get and set fields in a bp or DVA. 187fa9e4066Sahrens */ 188fa9e4066Sahrens #define DVA_GET_ASIZE(dva) \ 189fa9e4066Sahrens BF64_GET_SB((dva)->dva_word[0], 0, 24, SPA_MINBLOCKSHIFT, 0) 190fa9e4066Sahrens #define DVA_SET_ASIZE(dva, x) \ 191fa9e4066Sahrens BF64_SET_SB((dva)->dva_word[0], 0, 24, SPA_MINBLOCKSHIFT, 0, x) 192fa9e4066Sahrens 193fa9e4066Sahrens #define DVA_GET_GRID(dva) BF64_GET((dva)->dva_word[0], 24, 8) 194fa9e4066Sahrens #define DVA_SET_GRID(dva, x) BF64_SET((dva)->dva_word[0], 24, 8, x) 195fa9e4066Sahrens 196fa9e4066Sahrens #define DVA_GET_VDEV(dva) BF64_GET((dva)->dva_word[0], 32, 32) 197fa9e4066Sahrens #define DVA_SET_VDEV(dva, x) BF64_SET((dva)->dva_word[0], 32, 32, x) 198fa9e4066Sahrens 199fa9e4066Sahrens #define DVA_GET_OFFSET(dva) \ 200fa9e4066Sahrens BF64_GET_SB((dva)->dva_word[1], 0, 63, SPA_MINBLOCKSHIFT, 0) 201fa9e4066Sahrens #define DVA_SET_OFFSET(dva, x) \ 202fa9e4066Sahrens BF64_SET_SB((dva)->dva_word[1], 0, 63, SPA_MINBLOCKSHIFT, 0, x) 203fa9e4066Sahrens 204fa9e4066Sahrens #define DVA_GET_GANG(dva) BF64_GET((dva)->dva_word[1], 63, 1) 205fa9e4066Sahrens #define DVA_SET_GANG(dva, x) BF64_SET((dva)->dva_word[1], 63, 1, x) 206fa9e4066Sahrens 207fa9e4066Sahrens #define BP_GET_LSIZE(bp) \ 208fa9e4066Sahrens (BP_IS_HOLE(bp) ? 0 : \ 209fa9e4066Sahrens BF64_GET_SB((bp)->blk_prop, 0, 16, SPA_MINBLOCKSHIFT, 1)) 210fa9e4066Sahrens #define BP_SET_LSIZE(bp, x) \ 211fa9e4066Sahrens BF64_SET_SB((bp)->blk_prop, 0, 16, SPA_MINBLOCKSHIFT, 1, x) 212fa9e4066Sahrens 213fa9e4066Sahrens #define BP_GET_PSIZE(bp) \ 214fa9e4066Sahrens BF64_GET_SB((bp)->blk_prop, 16, 16, SPA_MINBLOCKSHIFT, 1) 215fa9e4066Sahrens #define BP_SET_PSIZE(bp, x) \ 216fa9e4066Sahrens BF64_SET_SB((bp)->blk_prop, 16, 16, SPA_MINBLOCKSHIFT, 1, x) 217fa9e4066Sahrens 218fa9e4066Sahrens #define BP_GET_COMPRESS(bp) BF64_GET((bp)->blk_prop, 32, 8) 219fa9e4066Sahrens #define BP_SET_COMPRESS(bp, x) BF64_SET((bp)->blk_prop, 32, 8, x) 220fa9e4066Sahrens 221fa9e4066Sahrens #define BP_GET_CHECKSUM(bp) BF64_GET((bp)->blk_prop, 40, 8) 222fa9e4066Sahrens #define BP_SET_CHECKSUM(bp, x) BF64_SET((bp)->blk_prop, 40, 8, x) 223fa9e4066Sahrens 224fa9e4066Sahrens #define BP_GET_TYPE(bp) BF64_GET((bp)->blk_prop, 48, 8) 225fa9e4066Sahrens #define BP_SET_TYPE(bp, x) BF64_SET((bp)->blk_prop, 48, 8, x) 226fa9e4066Sahrens 227fa9e4066Sahrens #define BP_GET_LEVEL(bp) BF64_GET((bp)->blk_prop, 56, 5) 228fa9e4066Sahrens #define BP_SET_LEVEL(bp, x) BF64_SET((bp)->blk_prop, 56, 5, x) 229fa9e4066Sahrens 230fa9e4066Sahrens #define BP_GET_BYTEORDER(bp) (0 - BF64_GET((bp)->blk_prop, 63, 1)) 231fa9e4066Sahrens #define BP_SET_BYTEORDER(bp, x) BF64_SET((bp)->blk_prop, 63, 1, x) 232fa9e4066Sahrens 233fa9e4066Sahrens #define BP_GET_ASIZE(bp) \ 234fa9e4066Sahrens (DVA_GET_ASIZE(&(bp)->blk_dva[0]) + DVA_GET_ASIZE(&(bp)->blk_dva[1]) + \ 23599653d4eSeschrock DVA_GET_ASIZE(&(bp)->blk_dva[2])) 23699653d4eSeschrock 23799653d4eSeschrock #define BP_GET_UCSIZE(bp) \ 23899653d4eSeschrock ((BP_GET_LEVEL(bp) > 0 || dmu_ot[BP_GET_TYPE(bp)].ot_metadata) ? \ 23999653d4eSeschrock BP_GET_PSIZE(bp) : BP_GET_LSIZE(bp)); 240fa9e4066Sahrens 24144cd46caSbillm #define BP_GET_NDVAS(bp) \ 24244cd46caSbillm (!!DVA_GET_ASIZE(&(bp)->blk_dva[0]) + \ 24344cd46caSbillm !!DVA_GET_ASIZE(&(bp)->blk_dva[1]) + \ 24444cd46caSbillm !!DVA_GET_ASIZE(&(bp)->blk_dva[2])) 24544cd46caSbillm 24644cd46caSbillm #define BP_COUNT_GANG(bp) \ 24744cd46caSbillm (DVA_GET_GANG(&(bp)->blk_dva[0]) + \ 24844cd46caSbillm DVA_GET_GANG(&(bp)->blk_dva[1]) + \ 24944cd46caSbillm DVA_GET_GANG(&(bp)->blk_dva[2])) 25044cd46caSbillm 251fa9e4066Sahrens #define DVA_EQUAL(dva1, dva2) \ 252fa9e4066Sahrens ((dva1)->dva_word[1] == (dva2)->dva_word[1] && \ 253fa9e4066Sahrens (dva1)->dva_word[0] == (dva2)->dva_word[0]) 254fa9e4066Sahrens 2556b4acc8bSahrens #define ZIO_CHECKSUM_EQUAL(zc1, zc2) \ 2566b4acc8bSahrens (0 == (((zc1).zc_word[0] - (zc2).zc_word[0]) | \ 2576b4acc8bSahrens ((zc1).zc_word[1] - (zc2).zc_word[1]) | \ 2586b4acc8bSahrens ((zc1).zc_word[2] - (zc2).zc_word[2]) | \ 2596b4acc8bSahrens ((zc1).zc_word[3] - (zc2).zc_word[3]))) 2606b4acc8bSahrens 2616b4acc8bSahrens 262fa9e4066Sahrens #define DVA_IS_VALID(dva) (DVA_GET_ASIZE(dva) != 0) 263fa9e4066Sahrens 264fa9e4066Sahrens #define ZIO_SET_CHECKSUM(zcp, w0, w1, w2, w3) \ 265fa9e4066Sahrens { \ 266fa9e4066Sahrens (zcp)->zc_word[0] = w0; \ 267fa9e4066Sahrens (zcp)->zc_word[1] = w1; \ 268fa9e4066Sahrens (zcp)->zc_word[2] = w2; \ 269fa9e4066Sahrens (zcp)->zc_word[3] = w3; \ 270fa9e4066Sahrens } 271fa9e4066Sahrens 272fa9e4066Sahrens #define BP_IDENTITY(bp) (&(bp)->blk_dva[0]) 27344cd46caSbillm #define BP_IS_GANG(bp) DVA_GET_GANG(BP_IDENTITY(bp)) 27444cd46caSbillm #define BP_IS_HOLE(bp) ((bp)->blk_birth == 0) 275fa9e4066Sahrens 276fa9e4066Sahrens #define BP_ZERO(bp) \ 277fa9e4066Sahrens { \ 278fa9e4066Sahrens (bp)->blk_dva[0].dva_word[0] = 0; \ 279fa9e4066Sahrens (bp)->blk_dva[0].dva_word[1] = 0; \ 280fa9e4066Sahrens (bp)->blk_dva[1].dva_word[0] = 0; \ 281fa9e4066Sahrens (bp)->blk_dva[1].dva_word[1] = 0; \ 282fa9e4066Sahrens (bp)->blk_dva[2].dva_word[0] = 0; \ 283fa9e4066Sahrens (bp)->blk_dva[2].dva_word[1] = 0; \ 284fa9e4066Sahrens (bp)->blk_prop = 0; \ 285fa9e4066Sahrens (bp)->blk_pad[0] = 0; \ 286fa9e4066Sahrens (bp)->blk_pad[1] = 0; \ 287fa9e4066Sahrens (bp)->blk_pad[2] = 0; \ 288fa9e4066Sahrens (bp)->blk_birth = 0; \ 289fa9e4066Sahrens (bp)->blk_fill = 0; \ 290fa9e4066Sahrens ZIO_SET_CHECKSUM(&(bp)->blk_cksum, 0, 0, 0, 0); \ 291fa9e4066Sahrens } 292fa9e4066Sahrens 293fa9e4066Sahrens /* 294fa9e4066Sahrens * Note: the byteorder is either 0 or -1, both of which are palindromes. 295fa9e4066Sahrens * This simplifies the endianness handling a bit. 296fa9e4066Sahrens */ 297fa9e4066Sahrens #ifdef _BIG_ENDIAN 298fa9e4066Sahrens #define ZFS_HOST_BYTEORDER (0ULL) 299fa9e4066Sahrens #else 300fa9e4066Sahrens #define ZFS_HOST_BYTEORDER (-1ULL) 301fa9e4066Sahrens #endif 302fa9e4066Sahrens 303fa9e4066Sahrens #define BP_SHOULD_BYTESWAP(bp) (BP_GET_BYTEORDER(bp) != ZFS_HOST_BYTEORDER) 304fa9e4066Sahrens 30544cd46caSbillm #define BP_SPRINTF_LEN 320 306fbabab8fSmaybee 307fa9e4066Sahrens #include <sys/dmu.h> 308fa9e4066Sahrens 309*ad23a2dbSjohansen #define BP_GET_BUFC_TYPE(bp) \ 310*ad23a2dbSjohansen (((BP_GET_LEVEL(bp) > 0) || (dmu_ot[BP_GET_TYPE(bp)].ot_metadata)) ? \ 311*ad23a2dbSjohansen ARC_BUFC_METADATA : ARC_BUFC_DATA); 312fa9e4066Sahrens /* 313fa9e4066Sahrens * Routines found in spa.c 314fa9e4066Sahrens */ 315fa9e4066Sahrens 316fa9e4066Sahrens /* state manipulation functions */ 317fa9e4066Sahrens extern int spa_open(const char *pool, spa_t **, void *tag); 318ea8dc4b6Seschrock extern int spa_get_stats(const char *pool, nvlist_t **config, 319ea8dc4b6Seschrock char *altroot, size_t buflen); 3200373e76bSbonwick extern int spa_create(const char *pool, nvlist_t *config, const char *altroot); 3210373e76bSbonwick extern int spa_import(const char *pool, nvlist_t *config, const char *altroot); 322fa9e4066Sahrens extern nvlist_t *spa_tryimport(nvlist_t *tryconfig); 323fa9e4066Sahrens extern int spa_destroy(char *pool); 32444cd46caSbillm extern int spa_export(char *pool, nvlist_t **oldconfig); 325ea8dc4b6Seschrock extern int spa_reset(char *pool); 326ea8dc4b6Seschrock extern void spa_async_request(spa_t *spa, int flag); 327ea8dc4b6Seschrock extern void spa_async_suspend(spa_t *spa); 328ea8dc4b6Seschrock extern void spa_async_resume(spa_t *spa); 329ea8dc4b6Seschrock extern spa_t *spa_inject_addref(char *pool); 330ea8dc4b6Seschrock extern void spa_inject_delref(spa_t *spa); 331ea8dc4b6Seschrock 332ea8dc4b6Seschrock #define SPA_ASYNC_REOPEN 0x01 333ea8dc4b6Seschrock #define SPA_ASYNC_REPLACE_DONE 0x02 334ea8dc4b6Seschrock #define SPA_ASYNC_SCRUB 0x04 335ea8dc4b6Seschrock #define SPA_ASYNC_RESILVER 0x08 3360373e76bSbonwick #define SPA_ASYNC_CONFIG_UPDATE 0x10 337fa9e4066Sahrens 338fa9e4066Sahrens /* device manipulation */ 339fa9e4066Sahrens extern int spa_vdev_add(spa_t *spa, nvlist_t *nvroot); 340ea8dc4b6Seschrock extern int spa_vdev_attach(spa_t *spa, uint64_t guid, nvlist_t *nvroot, 341fa9e4066Sahrens int replacing); 342ea8dc4b6Seschrock extern int spa_vdev_detach(spa_t *spa, uint64_t guid, int replace_done); 34399653d4eSeschrock extern int spa_vdev_remove(spa_t *spa, uint64_t guid, boolean_t unspare); 344c67d9675Seschrock extern int spa_vdev_setpath(spa_t *spa, uint64_t guid, const char *newpath); 345fa9e4066Sahrens 34699653d4eSeschrock /* spare state (which is global across all pools) */ 34799653d4eSeschrock extern void spa_spare_add(uint64_t guid); 34899653d4eSeschrock extern void spa_spare_remove(uint64_t guid); 34999653d4eSeschrock extern boolean_t spa_spare_inuse(uint64_t guid); 35099653d4eSeschrock 351fa9e4066Sahrens /* scrubbing */ 352fa9e4066Sahrens extern int spa_scrub(spa_t *spa, pool_scrub_type_t type, boolean_t force); 353fa9e4066Sahrens extern void spa_scrub_suspend(spa_t *spa); 354fa9e4066Sahrens extern void spa_scrub_resume(spa_t *spa); 355fa9e4066Sahrens extern void spa_scrub_restart(spa_t *spa, uint64_t txg); 356ea8dc4b6Seschrock extern void spa_scrub_throttle(spa_t *spa, int direction); 357fa9e4066Sahrens 358fa9e4066Sahrens /* spa syncing */ 359fa9e4066Sahrens extern void spa_sync(spa_t *spa, uint64_t txg); /* only for DMU use */ 360fa9e4066Sahrens extern void spa_sync_allpools(void); 361fa9e4066Sahrens 362fa9e4066Sahrens /* 363fa9e4066Sahrens * SPA configuration functions in spa_config.c 364fa9e4066Sahrens */ 3650373e76bSbonwick 3660373e76bSbonwick #define SPA_CONFIG_UPDATE_POOL 0 3670373e76bSbonwick #define SPA_CONFIG_UPDATE_VDEVS 1 3680373e76bSbonwick 369fa9e4066Sahrens extern void spa_config_sync(void); 370fa9e4066Sahrens extern void spa_config_load(void); 371fa9e4066Sahrens extern nvlist_t *spa_all_configs(uint64_t *); 372fa9e4066Sahrens extern void spa_config_set(spa_t *spa, nvlist_t *config); 373fa9e4066Sahrens extern nvlist_t *spa_config_generate(spa_t *spa, vdev_t *vd, uint64_t txg, 374fa9e4066Sahrens int getstats); 3750373e76bSbonwick extern void spa_config_update(spa_t *spa, int what); 376fa9e4066Sahrens 377fa9e4066Sahrens /* 378fa9e4066Sahrens * Miscellaneous SPA routines in spa_misc.c 379fa9e4066Sahrens */ 380fa9e4066Sahrens 381fa9e4066Sahrens /* Namespace manipulation */ 382fa9e4066Sahrens extern spa_t *spa_lookup(const char *name); 3830373e76bSbonwick extern spa_t *spa_add(const char *name, const char *altroot); 384fa9e4066Sahrens extern void spa_remove(spa_t *spa); 385fa9e4066Sahrens extern spa_t *spa_next(spa_t *prev); 386fa9e4066Sahrens 387fa9e4066Sahrens /* Refcount functions */ 388fa9e4066Sahrens extern void spa_open_ref(spa_t *spa, void *tag); 389fa9e4066Sahrens extern void spa_close(spa_t *spa, void *tag); 390fa9e4066Sahrens extern boolean_t spa_refcount_zero(spa_t *spa); 391fa9e4066Sahrens 392fa9e4066Sahrens /* Pool configuration lock */ 393ea8dc4b6Seschrock extern void spa_config_enter(spa_t *spa, krw_t rw, void *tag); 394ea8dc4b6Seschrock extern void spa_config_exit(spa_t *spa, void *tag); 395fa9e4066Sahrens extern boolean_t spa_config_held(spa_t *spa, krw_t rw); 396fa9e4066Sahrens 397fa9e4066Sahrens /* Pool vdev add/remove lock */ 398fa9e4066Sahrens extern uint64_t spa_vdev_enter(spa_t *spa); 399fa9e4066Sahrens extern int spa_vdev_exit(spa_t *spa, vdev_t *vd, uint64_t txg, int error); 400fa9e4066Sahrens 401fa9e4066Sahrens /* Accessor functions */ 402fa9e4066Sahrens extern krwlock_t *spa_traverse_rwlock(spa_t *spa); 403fa9e4066Sahrens extern int spa_traverse_wanted(spa_t *spa); 404fa9e4066Sahrens extern struct dsl_pool *spa_get_dsl(spa_t *spa); 405fa9e4066Sahrens extern blkptr_t *spa_get_rootblkptr(spa_t *spa); 406fa9e4066Sahrens extern void spa_set_rootblkptr(spa_t *spa, const blkptr_t *bp); 407fa9e4066Sahrens extern void spa_altroot(spa_t *, char *, size_t); 408fa9e4066Sahrens extern int spa_sync_pass(spa_t *spa); 409fa9e4066Sahrens extern char *spa_name(spa_t *spa); 410fa9e4066Sahrens extern uint64_t spa_guid(spa_t *spa); 411fa9e4066Sahrens extern uint64_t spa_last_synced_txg(spa_t *spa); 412fa9e4066Sahrens extern uint64_t spa_first_txg(spa_t *spa); 41399653d4eSeschrock extern uint64_t spa_version(spa_t *spa); 414fa9e4066Sahrens extern int spa_state(spa_t *spa); 415fa9e4066Sahrens extern uint64_t spa_freeze_txg(spa_t *spa); 416fa9e4066Sahrens struct metaslab_class; 417fa9e4066Sahrens extern struct metaslab_class *spa_metaslab_class_select(spa_t *spa); 418fa9e4066Sahrens extern uint64_t spa_get_alloc(spa_t *spa); 419fa9e4066Sahrens extern uint64_t spa_get_space(spa_t *spa); 42099653d4eSeschrock extern uint64_t spa_get_dspace(spa_t *spa); 421fa9e4066Sahrens extern uint64_t spa_get_asize(spa_t *spa, uint64_t lsize); 42244cd46caSbillm extern uint64_t spa_version(spa_t *spa); 42344cd46caSbillm extern int spa_max_replication(spa_t *spa); 424fa9e4066Sahrens extern int spa_busy(void); 425fa9e4066Sahrens 426fa9e4066Sahrens /* Miscellaneous support routines */ 427fa9e4066Sahrens extern int spa_rename(const char *oldname, const char *newname); 428fa9e4066Sahrens extern boolean_t spa_guid_exists(uint64_t pool_guid, uint64_t device_guid); 429fa9e4066Sahrens extern char *spa_strdup(const char *); 430fa9e4066Sahrens extern void spa_strfree(char *); 431fa9e4066Sahrens extern uint64_t spa_get_random(uint64_t range); 432d80c45e0Sbonwick extern void sprintf_blkptr(char *buf, int len, const blkptr_t *bp); 433fa9e4066Sahrens extern void spa_freeze(spa_t *spa); 434eaca9bbdSeschrock extern void spa_upgrade(spa_t *spa); 435fa9e4066Sahrens extern void spa_evict_all(void); 436ea8dc4b6Seschrock extern vdev_t *spa_lookup_by_guid(spa_t *spa, uint64_t guid); 43799653d4eSeschrock extern boolean_t spa_has_spare(spa_t *, uint64_t guid); 43899653d4eSeschrock extern uint64_t bp_get_dasize(spa_t *spa, const blkptr_t *bp); 439ea8dc4b6Seschrock 44006eeb2adSek /* history logging */ 44106eeb2adSek extern void spa_history_create_obj(spa_t *spa, dmu_tx_t *tx); 44206eeb2adSek extern int spa_history_get(spa_t *spa, uint64_t *offset, uint64_t *len_read, 44306eeb2adSek char *his_buf); 44406eeb2adSek extern int spa_history_log(spa_t *spa, const char *his_buf, 44506eeb2adSek uint64_t pool_create); 44606eeb2adSek 447ea8dc4b6Seschrock /* error handling */ 448ea8dc4b6Seschrock struct zbookmark; 449ea8dc4b6Seschrock struct zio; 450ea8dc4b6Seschrock extern void spa_log_error(spa_t *spa, struct zio *zio); 451ea8dc4b6Seschrock extern void zfs_ereport_post(const char *class, spa_t *spa, vdev_t *vd, 452ea8dc4b6Seschrock struct zio *zio, uint64_t stateoroffset, uint64_t length); 453ea8dc4b6Seschrock extern void zfs_post_ok(spa_t *spa, vdev_t *vd); 454ea8dc4b6Seschrock extern uint64_t spa_get_errlog_size(spa_t *spa); 455ea8dc4b6Seschrock extern int spa_get_errlog(spa_t *spa, void *uaddr, size_t *count); 456ea8dc4b6Seschrock extern void spa_errlog_rotate(spa_t *spa); 457ea8dc4b6Seschrock extern void spa_errlog_drain(spa_t *spa); 458ea8dc4b6Seschrock extern void spa_errlog_sync(spa_t *spa, uint64_t txg); 459e9dbad6fSeschrock extern int spa_bookmark_name(spa_t *spa, struct zbookmark *zb, 460e9dbad6fSeschrock nvlist_t *nvl); 461ea8dc4b6Seschrock extern void spa_get_errlists(spa_t *spa, avl_tree_t *last, avl_tree_t *scrub); 462fa9e4066Sahrens 463fa9e4066Sahrens /* Initialization and termination */ 464fa9e4066Sahrens extern void spa_init(int flags); 465fa9e4066Sahrens extern void spa_fini(void); 466fa9e4066Sahrens 467fa9e4066Sahrens #ifdef ZFS_DEBUG 468fa9e4066Sahrens #define dprintf_bp(bp, fmt, ...) do { \ 469fbabab8fSmaybee if (zfs_flags & ZFS_DEBUG_DPRINTF) { \ 470fbabab8fSmaybee char __blkbuf[BP_SPRINTF_LEN]; \ 471fbabab8fSmaybee sprintf_blkptr(__blkbuf, BP_SPRINTF_LEN, (bp)); \ 472fa9e4066Sahrens dprintf(fmt " %s\n", __VA_ARGS__, __blkbuf); \ 473fa9e4066Sahrens } \ 474fa9e4066Sahrens _NOTE(CONSTCOND) } while (0) 475fa9e4066Sahrens #else 476fa9e4066Sahrens #define dprintf_bp(bp, fmt, ...) 477fa9e4066Sahrens #endif 478fa9e4066Sahrens 479fa9e4066Sahrens extern int spa_mode; /* mode, e.g. FREAD | FWRITE */ 480fa9e4066Sahrens 481fa9e4066Sahrens #ifdef __cplusplus 482fa9e4066Sahrens } 483fa9e4066Sahrens #endif 484fa9e4066Sahrens 485fa9e4066Sahrens #endif /* _SYS_SPA_H */ 486