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 /* 2287db74c1Sek * Copyright 2008 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 #include <sys/avl.h> 30fa9e4066Sahrens #include <sys/zfs_context.h> 31fa9e4066Sahrens #include <sys/nvpair.h> 32fa9e4066Sahrens #include <sys/sysmacros.h> 33fa9e4066Sahrens #include <sys/types.h> 34fa9e4066Sahrens #include <sys/fs/zfs.h> 35fa9e4066Sahrens 36fa9e4066Sahrens #ifdef __cplusplus 37fa9e4066Sahrens extern "C" { 38fa9e4066Sahrens #endif 39fa9e4066Sahrens 40fa9e4066Sahrens /* 41fa9e4066Sahrens * Forward references that lots of things need. 42fa9e4066Sahrens */ 43fa9e4066Sahrens typedef struct spa spa_t; 44fa9e4066Sahrens typedef struct vdev vdev_t; 45fa9e4066Sahrens typedef struct metaslab metaslab_t; 46fa9e4066Sahrens typedef struct zilog zilog_t; 47fa9e4066Sahrens typedef struct traverse_handle traverse_handle_t; 48fa94a07fSbrendan typedef struct spa_aux_vdev spa_aux_vdev_t; 49fa9e4066Sahrens struct dsl_pool; 50fa9e4066Sahrens 51fa9e4066Sahrens /* 52fa9e4066Sahrens * General-purpose 32-bit and 64-bit bitfield encodings. 53fa9e4066Sahrens */ 54fa9e4066Sahrens #define BF32_DECODE(x, low, len) P2PHASE((x) >> (low), 1U << (len)) 55fa9e4066Sahrens #define BF64_DECODE(x, low, len) P2PHASE((x) >> (low), 1ULL << (len)) 56fa9e4066Sahrens #define BF32_ENCODE(x, low, len) (P2PHASE((x), 1U << (len)) << (low)) 57fa9e4066Sahrens #define BF64_ENCODE(x, low, len) (P2PHASE((x), 1ULL << (len)) << (low)) 58fa9e4066Sahrens 59fa9e4066Sahrens #define BF32_GET(x, low, len) BF32_DECODE(x, low, len) 60fa9e4066Sahrens #define BF64_GET(x, low, len) BF64_DECODE(x, low, len) 61fa9e4066Sahrens 62fa9e4066Sahrens #define BF32_SET(x, low, len, val) \ 635ad82045Snd ((x) ^= BF32_ENCODE((x >> low) ^ (val), low, len)) 64fa9e4066Sahrens #define BF64_SET(x, low, len, val) \ 655ad82045Snd ((x) ^= BF64_ENCODE((x >> low) ^ (val), low, len)) 66fa9e4066Sahrens 67fa9e4066Sahrens #define BF32_GET_SB(x, low, len, shift, bias) \ 68fa9e4066Sahrens ((BF32_GET(x, low, len) + (bias)) << (shift)) 69fa9e4066Sahrens #define BF64_GET_SB(x, low, len, shift, bias) \ 70fa9e4066Sahrens ((BF64_GET(x, low, len) + (bias)) << (shift)) 71fa9e4066Sahrens 72fa9e4066Sahrens #define BF32_SET_SB(x, low, len, shift, bias, val) \ 73fa9e4066Sahrens BF32_SET(x, low, len, ((val) >> (shift)) - (bias)) 74fa9e4066Sahrens #define BF64_SET_SB(x, low, len, shift, bias, val) \ 75fa9e4066Sahrens BF64_SET(x, low, len, ((val) >> (shift)) - (bias)) 76fa9e4066Sahrens 77fa9e4066Sahrens /* 78fa9e4066Sahrens * We currently support nine block sizes, from 512 bytes to 128K. 79fa9e4066Sahrens * We could go higher, but the benefits are near-zero and the cost 80fa9e4066Sahrens * of COWing a giant block to modify one byte would become excessive. 81fa9e4066Sahrens */ 82fa9e4066Sahrens #define SPA_MINBLOCKSHIFT 9 83fa9e4066Sahrens #define SPA_MAXBLOCKSHIFT 17 84fa9e4066Sahrens #define SPA_MINBLOCKSIZE (1ULL << SPA_MINBLOCKSHIFT) 85fa9e4066Sahrens #define SPA_MAXBLOCKSIZE (1ULL << SPA_MAXBLOCKSHIFT) 86fa9e4066Sahrens 87fa9e4066Sahrens #define SPA_BLOCKSIZES (SPA_MAXBLOCKSHIFT - SPA_MINBLOCKSHIFT + 1) 88fa9e4066Sahrens 89f7991ba4STim Haley /* 90f7991ba4STim Haley * Size of block to hold the configuration data (a packed nvlist) 91f7991ba4STim Haley */ 92f7991ba4STim Haley #define SPA_CONFIG_BLOCKSIZE (1 << 14) 93f7991ba4STim Haley 94fa9e4066Sahrens /* 95fa9e4066Sahrens * The DVA size encodings for LSIZE and PSIZE support blocks up to 32MB. 96fa9e4066Sahrens * The ASIZE encoding should be at least 64 times larger (6 more bits) 97fa9e4066Sahrens * to support up to 4-way RAID-Z mirror mode with worst-case gang block 98fa9e4066Sahrens * overhead, three DVAs per bp, plus one more bit in case we do anything 99fa9e4066Sahrens * else that expands the ASIZE. 100fa9e4066Sahrens */ 101fa9e4066Sahrens #define SPA_LSIZEBITS 16 /* LSIZE up to 32M (2^16 * 512) */ 102fa9e4066Sahrens #define SPA_PSIZEBITS 16 /* PSIZE up to 32M (2^16 * 512) */ 103fa9e4066Sahrens #define SPA_ASIZEBITS 24 /* ASIZE up to 64 times larger */ 104fa9e4066Sahrens 105fa9e4066Sahrens /* 106fa9e4066Sahrens * All SPA data is represented by 128-bit data virtual addresses (DVAs). 107fa9e4066Sahrens * The members of the dva_t should be considered opaque outside the SPA. 108fa9e4066Sahrens */ 109fa9e4066Sahrens typedef struct dva { 110fa9e4066Sahrens uint64_t dva_word[2]; 111fa9e4066Sahrens } dva_t; 112fa9e4066Sahrens 113fa9e4066Sahrens /* 114fa9e4066Sahrens * Each block has a 256-bit checksum -- strong enough for cryptographic hashes. 115fa9e4066Sahrens */ 116fa9e4066Sahrens typedef struct zio_cksum { 117fa9e4066Sahrens uint64_t zc_word[4]; 118fa9e4066Sahrens } zio_cksum_t; 119fa9e4066Sahrens 120fa9e4066Sahrens /* 121fa9e4066Sahrens * Each block is described by its DVAs, time of birth, checksum, etc. 122fa9e4066Sahrens * The word-by-word, bit-by-bit layout of the blkptr is as follows: 123fa9e4066Sahrens * 124fa9e4066Sahrens * 64 56 48 40 32 24 16 8 0 125fa9e4066Sahrens * +-------+-------+-------+-------+-------+-------+-------+-------+ 126fa9e4066Sahrens * 0 | vdev1 | GRID | ASIZE | 127fa9e4066Sahrens * +-------+-------+-------+-------+-------+-------+-------+-------+ 128fa9e4066Sahrens * 1 |G| offset1 | 129fa9e4066Sahrens * +-------+-------+-------+-------+-------+-------+-------+-------+ 130fa9e4066Sahrens * 2 | vdev2 | GRID | ASIZE | 131fa9e4066Sahrens * +-------+-------+-------+-------+-------+-------+-------+-------+ 132fa9e4066Sahrens * 3 |G| offset2 | 133fa9e4066Sahrens * +-------+-------+-------+-------+-------+-------+-------+-------+ 134fa9e4066Sahrens * 4 | vdev3 | GRID | ASIZE | 135fa9e4066Sahrens * +-------+-------+-------+-------+-------+-------+-------+-------+ 136fa9e4066Sahrens * 5 |G| offset3 | 137fa9e4066Sahrens * +-------+-------+-------+-------+-------+-------+-------+-------+ 138fa9e4066Sahrens * 6 |E| lvl | type | cksum | comp | PSIZE | LSIZE | 139fa9e4066Sahrens * +-------+-------+-------+-------+-------+-------+-------+-------+ 140fa9e4066Sahrens * 7 | padding | 141fa9e4066Sahrens * +-------+-------+-------+-------+-------+-------+-------+-------+ 142fa9e4066Sahrens * 8 | padding | 143fa9e4066Sahrens * +-------+-------+-------+-------+-------+-------+-------+-------+ 144fa9e4066Sahrens * 9 | padding | 145fa9e4066Sahrens * +-------+-------+-------+-------+-------+-------+-------+-------+ 146fa9e4066Sahrens * a | birth txg | 147fa9e4066Sahrens * +-------+-------+-------+-------+-------+-------+-------+-------+ 148fa9e4066Sahrens * b | fill count | 149fa9e4066Sahrens * +-------+-------+-------+-------+-------+-------+-------+-------+ 150fa9e4066Sahrens * c | checksum[0] | 151fa9e4066Sahrens * +-------+-------+-------+-------+-------+-------+-------+-------+ 152fa9e4066Sahrens * d | checksum[1] | 153fa9e4066Sahrens * +-------+-------+-------+-------+-------+-------+-------+-------+ 154fa9e4066Sahrens * e | checksum[2] | 155fa9e4066Sahrens * +-------+-------+-------+-------+-------+-------+-------+-------+ 156fa9e4066Sahrens * f | checksum[3] | 157fa9e4066Sahrens * +-------+-------+-------+-------+-------+-------+-------+-------+ 158fa9e4066Sahrens * 159fa9e4066Sahrens * Legend: 160fa9e4066Sahrens * 161fa9e4066Sahrens * vdev virtual device ID 162fa9e4066Sahrens * offset offset into virtual device 163fa9e4066Sahrens * LSIZE logical size 164fa9e4066Sahrens * PSIZE physical size (after compression) 165fa9e4066Sahrens * ASIZE allocated size (including RAID-Z parity and gang block headers) 166fa9e4066Sahrens * GRID RAID-Z layout information (reserved for future use) 167fa9e4066Sahrens * cksum checksum function 168fa9e4066Sahrens * comp compression function 169fa9e4066Sahrens * G gang block indicator 170fa9e4066Sahrens * E endianness 171fa9e4066Sahrens * type DMU object type 172fa9e4066Sahrens * lvl level of indirection 173fa9e4066Sahrens * birth txg transaction group in which the block was born 174fa9e4066Sahrens * fill count number of non-zero blocks under this bp 175fa9e4066Sahrens * checksum[4] 256-bit checksum of the data this bp describes 176fa9e4066Sahrens */ 177fa9e4066Sahrens typedef struct blkptr { 178fa9e4066Sahrens dva_t blk_dva[3]; /* 128-bit Data Virtual Address */ 179fa9e4066Sahrens uint64_t blk_prop; /* size, compression, type, etc */ 180fa9e4066Sahrens uint64_t blk_pad[3]; /* Extra space for the future */ 181fa9e4066Sahrens uint64_t blk_birth; /* transaction group at birth */ 182fa9e4066Sahrens uint64_t blk_fill; /* fill count */ 183fa9e4066Sahrens zio_cksum_t blk_cksum; /* 256-bit checksum */ 184fa9e4066Sahrens } blkptr_t; 185fa9e4066Sahrens 186fa9e4066Sahrens #define SPA_BLKPTRSHIFT 7 /* blkptr_t is 128 bytes */ 187fa9e4066Sahrens #define SPA_DVAS_PER_BP 3 /* Number of DVAs in a bp */ 188fa9e4066Sahrens 189fa9e4066Sahrens /* 190fa9e4066Sahrens * Macros to get and set fields in a bp or DVA. 191fa9e4066Sahrens */ 192fa9e4066Sahrens #define DVA_GET_ASIZE(dva) \ 193fa9e4066Sahrens BF64_GET_SB((dva)->dva_word[0], 0, 24, SPA_MINBLOCKSHIFT, 0) 194fa9e4066Sahrens #define DVA_SET_ASIZE(dva, x) \ 195fa9e4066Sahrens BF64_SET_SB((dva)->dva_word[0], 0, 24, SPA_MINBLOCKSHIFT, 0, x) 196fa9e4066Sahrens 197fa9e4066Sahrens #define DVA_GET_GRID(dva) BF64_GET((dva)->dva_word[0], 24, 8) 198fa9e4066Sahrens #define DVA_SET_GRID(dva, x) BF64_SET((dva)->dva_word[0], 24, 8, x) 199fa9e4066Sahrens 200fa9e4066Sahrens #define DVA_GET_VDEV(dva) BF64_GET((dva)->dva_word[0], 32, 32) 201fa9e4066Sahrens #define DVA_SET_VDEV(dva, x) BF64_SET((dva)->dva_word[0], 32, 32, x) 202fa9e4066Sahrens 203fa9e4066Sahrens #define DVA_GET_OFFSET(dva) \ 204fa9e4066Sahrens BF64_GET_SB((dva)->dva_word[1], 0, 63, SPA_MINBLOCKSHIFT, 0) 205fa9e4066Sahrens #define DVA_SET_OFFSET(dva, x) \ 206fa9e4066Sahrens BF64_SET_SB((dva)->dva_word[1], 0, 63, SPA_MINBLOCKSHIFT, 0, x) 207fa9e4066Sahrens 208fa9e4066Sahrens #define DVA_GET_GANG(dva) BF64_GET((dva)->dva_word[1], 63, 1) 209fa9e4066Sahrens #define DVA_SET_GANG(dva, x) BF64_SET((dva)->dva_word[1], 63, 1, x) 210fa9e4066Sahrens 211fa9e4066Sahrens #define BP_GET_LSIZE(bp) \ 212fa9e4066Sahrens (BP_IS_HOLE(bp) ? 0 : \ 213fa9e4066Sahrens BF64_GET_SB((bp)->blk_prop, 0, 16, SPA_MINBLOCKSHIFT, 1)) 214fa9e4066Sahrens #define BP_SET_LSIZE(bp, x) \ 215fa9e4066Sahrens BF64_SET_SB((bp)->blk_prop, 0, 16, SPA_MINBLOCKSHIFT, 1, x) 216fa9e4066Sahrens 217fa9e4066Sahrens #define BP_GET_PSIZE(bp) \ 218fa9e4066Sahrens BF64_GET_SB((bp)->blk_prop, 16, 16, SPA_MINBLOCKSHIFT, 1) 219fa9e4066Sahrens #define BP_SET_PSIZE(bp, x) \ 220fa9e4066Sahrens BF64_SET_SB((bp)->blk_prop, 16, 16, SPA_MINBLOCKSHIFT, 1, x) 221fa9e4066Sahrens 222fa9e4066Sahrens #define BP_GET_COMPRESS(bp) BF64_GET((bp)->blk_prop, 32, 8) 223fa9e4066Sahrens #define BP_SET_COMPRESS(bp, x) BF64_SET((bp)->blk_prop, 32, 8, x) 224fa9e4066Sahrens 225fa9e4066Sahrens #define BP_GET_CHECKSUM(bp) BF64_GET((bp)->blk_prop, 40, 8) 226fa9e4066Sahrens #define BP_SET_CHECKSUM(bp, x) BF64_SET((bp)->blk_prop, 40, 8, x) 227fa9e4066Sahrens 228fa9e4066Sahrens #define BP_GET_TYPE(bp) BF64_GET((bp)->blk_prop, 48, 8) 229fa9e4066Sahrens #define BP_SET_TYPE(bp, x) BF64_SET((bp)->blk_prop, 48, 8, x) 230fa9e4066Sahrens 231fa9e4066Sahrens #define BP_GET_LEVEL(bp) BF64_GET((bp)->blk_prop, 56, 5) 232fa9e4066Sahrens #define BP_SET_LEVEL(bp, x) BF64_SET((bp)->blk_prop, 56, 5, x) 233fa9e4066Sahrens 234fa9e4066Sahrens #define BP_GET_BYTEORDER(bp) (0 - BF64_GET((bp)->blk_prop, 63, 1)) 235fa9e4066Sahrens #define BP_SET_BYTEORDER(bp, x) BF64_SET((bp)->blk_prop, 63, 1, x) 236fa9e4066Sahrens 237fa9e4066Sahrens #define BP_GET_ASIZE(bp) \ 238fa9e4066Sahrens (DVA_GET_ASIZE(&(bp)->blk_dva[0]) + DVA_GET_ASIZE(&(bp)->blk_dva[1]) + \ 23999653d4eSeschrock DVA_GET_ASIZE(&(bp)->blk_dva[2])) 24099653d4eSeschrock 24199653d4eSeschrock #define BP_GET_UCSIZE(bp) \ 24299653d4eSeschrock ((BP_GET_LEVEL(bp) > 0 || dmu_ot[BP_GET_TYPE(bp)].ot_metadata) ? \ 24399653d4eSeschrock BP_GET_PSIZE(bp) : BP_GET_LSIZE(bp)); 244fa9e4066Sahrens 24544cd46caSbillm #define BP_GET_NDVAS(bp) \ 24644cd46caSbillm (!!DVA_GET_ASIZE(&(bp)->blk_dva[0]) + \ 24744cd46caSbillm !!DVA_GET_ASIZE(&(bp)->blk_dva[1]) + \ 24844cd46caSbillm !!DVA_GET_ASIZE(&(bp)->blk_dva[2])) 24944cd46caSbillm 25044cd46caSbillm #define BP_COUNT_GANG(bp) \ 25144cd46caSbillm (DVA_GET_GANG(&(bp)->blk_dva[0]) + \ 25244cd46caSbillm DVA_GET_GANG(&(bp)->blk_dva[1]) + \ 25344cd46caSbillm DVA_GET_GANG(&(bp)->blk_dva[2])) 25444cd46caSbillm 255fa9e4066Sahrens #define DVA_EQUAL(dva1, dva2) \ 256fa9e4066Sahrens ((dva1)->dva_word[1] == (dva2)->dva_word[1] && \ 257fa9e4066Sahrens (dva1)->dva_word[0] == (dva2)->dva_word[0]) 258fa9e4066Sahrens 2596b4acc8bSahrens #define ZIO_CHECKSUM_EQUAL(zc1, zc2) \ 2606b4acc8bSahrens (0 == (((zc1).zc_word[0] - (zc2).zc_word[0]) | \ 2616b4acc8bSahrens ((zc1).zc_word[1] - (zc2).zc_word[1]) | \ 2626b4acc8bSahrens ((zc1).zc_word[2] - (zc2).zc_word[2]) | \ 2636b4acc8bSahrens ((zc1).zc_word[3] - (zc2).zc_word[3]))) 2646b4acc8bSahrens 265fa9e4066Sahrens #define DVA_IS_VALID(dva) (DVA_GET_ASIZE(dva) != 0) 266fa9e4066Sahrens 267fa9e4066Sahrens #define ZIO_SET_CHECKSUM(zcp, w0, w1, w2, w3) \ 268fa9e4066Sahrens { \ 269fa9e4066Sahrens (zcp)->zc_word[0] = w0; \ 270fa9e4066Sahrens (zcp)->zc_word[1] = w1; \ 271fa9e4066Sahrens (zcp)->zc_word[2] = w2; \ 272fa9e4066Sahrens (zcp)->zc_word[3] = w3; \ 273fa9e4066Sahrens } 274fa9e4066Sahrens 275fa9e4066Sahrens #define BP_IDENTITY(bp) (&(bp)->blk_dva[0]) 27644cd46caSbillm #define BP_IS_GANG(bp) DVA_GET_GANG(BP_IDENTITY(bp)) 27744cd46caSbillm #define BP_IS_HOLE(bp) ((bp)->blk_birth == 0) 278c717a561Smaybee #define BP_IS_OLDER(bp, txg) (!BP_IS_HOLE(bp) && (bp)->blk_birth < (txg)) 279fa9e4066Sahrens 280*e14bb325SJeff Bonwick #define BP_ZERO(bp) \ 281fa9e4066Sahrens { \ 282fa9e4066Sahrens (bp)->blk_dva[0].dva_word[0] = 0; \ 283fa9e4066Sahrens (bp)->blk_dva[0].dva_word[1] = 0; \ 284fa9e4066Sahrens (bp)->blk_dva[1].dva_word[0] = 0; \ 285fa9e4066Sahrens (bp)->blk_dva[1].dva_word[1] = 0; \ 286fa9e4066Sahrens (bp)->blk_dva[2].dva_word[0] = 0; \ 287fa9e4066Sahrens (bp)->blk_dva[2].dva_word[1] = 0; \ 288fa9e4066Sahrens (bp)->blk_prop = 0; \ 289fa9e4066Sahrens (bp)->blk_pad[0] = 0; \ 290fa9e4066Sahrens (bp)->blk_pad[1] = 0; \ 291fa9e4066Sahrens (bp)->blk_pad[2] = 0; \ 292*e14bb325SJeff Bonwick (bp)->blk_birth = 0; \ 293fa9e4066Sahrens (bp)->blk_fill = 0; \ 294fa9e4066Sahrens ZIO_SET_CHECKSUM(&(bp)->blk_cksum, 0, 0, 0, 0); \ 295fa9e4066Sahrens } 296fa9e4066Sahrens 297*e14bb325SJeff Bonwick #define BLK_FILL_ALREADY_FREED (-1ULL) 298*e14bb325SJeff Bonwick 299fa9e4066Sahrens /* 300fa9e4066Sahrens * Note: the byteorder is either 0 or -1, both of which are palindromes. 301fa9e4066Sahrens * This simplifies the endianness handling a bit. 302fa9e4066Sahrens */ 303fa9e4066Sahrens #ifdef _BIG_ENDIAN 304fa9e4066Sahrens #define ZFS_HOST_BYTEORDER (0ULL) 305fa9e4066Sahrens #else 306fa9e4066Sahrens #define ZFS_HOST_BYTEORDER (-1ULL) 307fa9e4066Sahrens #endif 308fa9e4066Sahrens 309fa9e4066Sahrens #define BP_SHOULD_BYTESWAP(bp) (BP_GET_BYTEORDER(bp) != ZFS_HOST_BYTEORDER) 310fa9e4066Sahrens 31144cd46caSbillm #define BP_SPRINTF_LEN 320 312fbabab8fSmaybee 313fa9e4066Sahrens #include <sys/dmu.h> 314fa9e4066Sahrens 315ad23a2dbSjohansen #define BP_GET_BUFC_TYPE(bp) \ 316ad23a2dbSjohansen (((BP_GET_LEVEL(bp) > 0) || (dmu_ot[BP_GET_TYPE(bp)].ot_metadata)) ? \ 317ad23a2dbSjohansen ARC_BUFC_METADATA : ARC_BUFC_DATA); 318fa9e4066Sahrens /* 319fa9e4066Sahrens * Routines found in spa.c 320fa9e4066Sahrens */ 321fa9e4066Sahrens 322fa9e4066Sahrens /* state manipulation functions */ 323fa9e4066Sahrens extern int spa_open(const char *pool, spa_t **, void *tag); 324ea8dc4b6Seschrock extern int spa_get_stats(const char *pool, nvlist_t **config, 325ea8dc4b6Seschrock char *altroot, size_t buflen); 326990b4856Slling extern int spa_create(const char *pool, nvlist_t *config, nvlist_t *props, 3270a48a24eStimh const char *history_str, nvlist_t *zplprops); 328051aabe6Staylor extern int spa_check_rootconf(char *devpath, char *devid, 329051aabe6Staylor nvlist_t **bestconf, uint64_t *besttxg); 330e7cbe64fSgw extern boolean_t spa_rootdev_validate(nvlist_t *nv); 331051aabe6Staylor extern int spa_import_rootpool(char *devpath, char *devid); 332990b4856Slling extern int spa_import(const char *pool, nvlist_t *config, nvlist_t *props); 333c5904d13Seschrock extern int spa_import_faulted(const char *, nvlist_t *, nvlist_t *); 334fa9e4066Sahrens extern nvlist_t *spa_tryimport(nvlist_t *tryconfig); 335fa9e4066Sahrens extern int spa_destroy(char *pool); 33689a89ebfSlling extern int spa_export(char *pool, nvlist_t **oldconfig, boolean_t force); 337ea8dc4b6Seschrock extern int spa_reset(char *pool); 338ea8dc4b6Seschrock extern void spa_async_request(spa_t *spa, int flag); 339088f3894Sahrens extern void spa_async_unrequest(spa_t *spa, int flag); 340ea8dc4b6Seschrock extern void spa_async_suspend(spa_t *spa); 341ea8dc4b6Seschrock extern void spa_async_resume(spa_t *spa); 342ea8dc4b6Seschrock extern spa_t *spa_inject_addref(char *pool); 343ea8dc4b6Seschrock extern void spa_inject_delref(spa_t *spa); 344ea8dc4b6Seschrock 345*e14bb325SJeff Bonwick #define SPA_ASYNC_CONFIG_UPDATE 0x01 346*e14bb325SJeff Bonwick #define SPA_ASYNC_REMOVE 0x02 347*e14bb325SJeff Bonwick #define SPA_ASYNC_PROBE 0x04 348*e14bb325SJeff Bonwick #define SPA_ASYNC_RESILVER_DONE 0x08 349*e14bb325SJeff Bonwick #define SPA_ASYNC_RESILVER 0x10 350fa9e4066Sahrens 351fa9e4066Sahrens /* device manipulation */ 352fa9e4066Sahrens extern int spa_vdev_add(spa_t *spa, nvlist_t *nvroot); 353ea8dc4b6Seschrock extern int spa_vdev_attach(spa_t *spa, uint64_t guid, nvlist_t *nvroot, 354fa9e4066Sahrens int replacing); 355ea8dc4b6Seschrock extern int spa_vdev_detach(spa_t *spa, uint64_t guid, int replace_done); 35699653d4eSeschrock extern int spa_vdev_remove(spa_t *spa, uint64_t guid, boolean_t unspare); 357c67d9675Seschrock extern int spa_vdev_setpath(spa_t *spa, uint64_t guid, const char *newpath); 358fa9e4066Sahrens 35999653d4eSeschrock /* spare state (which is global across all pools) */ 36039c23413Seschrock extern void spa_spare_add(vdev_t *vd); 36139c23413Seschrock extern void spa_spare_remove(vdev_t *vd); 36289a89ebfSlling extern boolean_t spa_spare_exists(uint64_t guid, uint64_t *pool, int *refcnt); 36339c23413Seschrock extern void spa_spare_activate(vdev_t *vd); 36499653d4eSeschrock 365fa94a07fSbrendan /* L2ARC state (which is global across all pools) */ 366fa94a07fSbrendan extern void spa_l2cache_add(vdev_t *vd); 367fa94a07fSbrendan extern void spa_l2cache_remove(vdev_t *vd); 368fa94a07fSbrendan extern boolean_t spa_l2cache_exists(uint64_t guid, uint64_t *pool); 369fa94a07fSbrendan extern void spa_l2cache_activate(vdev_t *vd); 370fa94a07fSbrendan extern void spa_l2cache_drop(spa_t *spa); 371fa94a07fSbrendan extern void spa_l2cache_space_update(vdev_t *vd, int64_t space, int64_t alloc); 372fa94a07fSbrendan 373fa9e4066Sahrens /* scrubbing */ 374088f3894Sahrens extern int spa_scrub(spa_t *spa, pool_scrub_type_t type); 375fa9e4066Sahrens 376fa9e4066Sahrens /* spa syncing */ 377fa9e4066Sahrens extern void spa_sync(spa_t *spa, uint64_t txg); /* only for DMU use */ 378fa9e4066Sahrens extern void spa_sync_allpools(void); 379fa9e4066Sahrens 3803a737e0dSbrendan /* spa namespace global mutex */ 3813a737e0dSbrendan extern kmutex_t spa_namespace_lock; 3823a737e0dSbrendan 383fa9e4066Sahrens /* 384fa9e4066Sahrens * SPA configuration functions in spa_config.c 385fa9e4066Sahrens */ 3860373e76bSbonwick 3870373e76bSbonwick #define SPA_CONFIG_UPDATE_POOL 0 3880373e76bSbonwick #define SPA_CONFIG_UPDATE_VDEVS 1 3890373e76bSbonwick 390c5904d13Seschrock extern void spa_config_sync(spa_t *, boolean_t, boolean_t); 391fa9e4066Sahrens extern void spa_config_load(void); 392fa9e4066Sahrens extern nvlist_t *spa_all_configs(uint64_t *); 393fa9e4066Sahrens extern void spa_config_set(spa_t *spa, nvlist_t *config); 394fa9e4066Sahrens extern nvlist_t *spa_config_generate(spa_t *spa, vdev_t *vd, uint64_t txg, 395fa9e4066Sahrens int getstats); 3960373e76bSbonwick extern void spa_config_update(spa_t *spa, int what); 397e7cbe64fSgw extern void spa_config_update_common(spa_t *spa, int what, boolean_t isroot); 398fa9e4066Sahrens 399fa9e4066Sahrens /* 400fa9e4066Sahrens * Miscellaneous SPA routines in spa_misc.c 401fa9e4066Sahrens */ 402fa9e4066Sahrens 403fa9e4066Sahrens /* Namespace manipulation */ 404fa9e4066Sahrens extern spa_t *spa_lookup(const char *name); 4050373e76bSbonwick extern spa_t *spa_add(const char *name, const char *altroot); 406fa9e4066Sahrens extern void spa_remove(spa_t *spa); 407fa9e4066Sahrens extern spa_t *spa_next(spa_t *prev); 408fa9e4066Sahrens 409fa9e4066Sahrens /* Refcount functions */ 410fa9e4066Sahrens extern void spa_open_ref(spa_t *spa, void *tag); 411fa9e4066Sahrens extern void spa_close(spa_t *spa, void *tag); 412fa9e4066Sahrens extern boolean_t spa_refcount_zero(spa_t *spa); 413fa9e4066Sahrens 414*e14bb325SJeff Bonwick #define SCL_CONFIG 0x01 415*e14bb325SJeff Bonwick #define SCL_STATE 0x02 416*e14bb325SJeff Bonwick #define SCL_L2ARC 0x04 /* hack until L2ARC 2.0 */ 417*e14bb325SJeff Bonwick #define SCL_ALLOC 0x08 418*e14bb325SJeff Bonwick #define SCL_ZIO 0x10 419*e14bb325SJeff Bonwick #define SCL_FREE 0x20 420*e14bb325SJeff Bonwick #define SCL_VDEV 0x40 421*e14bb325SJeff Bonwick #define SCL_LOCKS 7 422*e14bb325SJeff Bonwick #define SCL_ALL ((1 << SCL_LOCKS) - 1) 423*e14bb325SJeff Bonwick #define SCL_STATE_ALL (SCL_STATE | SCL_L2ARC | SCL_ZIO) 424*e14bb325SJeff Bonwick 425*e14bb325SJeff Bonwick /* Pool configuration locks */ 426*e14bb325SJeff Bonwick extern int spa_config_tryenter(spa_t *spa, int locks, void *tag, krw_t rw); 427*e14bb325SJeff Bonwick extern void spa_config_enter(spa_t *spa, int locks, void *tag, krw_t rw); 428*e14bb325SJeff Bonwick extern void spa_config_exit(spa_t *spa, int locks, void *tag); 429*e14bb325SJeff Bonwick extern int spa_config_held(spa_t *spa, int locks, krw_t rw); 430fa9e4066Sahrens 431fa9e4066Sahrens /* Pool vdev add/remove lock */ 432fa9e4066Sahrens extern uint64_t spa_vdev_enter(spa_t *spa); 433fa9e4066Sahrens extern int spa_vdev_exit(spa_t *spa, vdev_t *vd, uint64_t txg, int error); 434fa9e4066Sahrens 435*e14bb325SJeff Bonwick /* Pool vdev state change lock */ 436*e14bb325SJeff Bonwick extern void spa_vdev_state_enter(spa_t *spa); 437*e14bb325SJeff Bonwick extern int spa_vdev_state_exit(spa_t *spa, vdev_t *vd, int error); 438*e14bb325SJeff Bonwick 439fa9e4066Sahrens /* Accessor functions */ 440fa9e4066Sahrens extern krwlock_t *spa_traverse_rwlock(spa_t *spa); 441088f3894Sahrens extern boolean_t spa_traverse_wanted(spa_t *spa); 442fa9e4066Sahrens extern struct dsl_pool *spa_get_dsl(spa_t *spa); 443fa9e4066Sahrens extern blkptr_t *spa_get_rootblkptr(spa_t *spa); 444fa9e4066Sahrens extern void spa_set_rootblkptr(spa_t *spa, const blkptr_t *bp); 445fa9e4066Sahrens extern void spa_altroot(spa_t *, char *, size_t); 446fa9e4066Sahrens extern int spa_sync_pass(spa_t *spa); 447fa9e4066Sahrens extern char *spa_name(spa_t *spa); 448fa9e4066Sahrens extern uint64_t spa_guid(spa_t *spa); 449fa9e4066Sahrens extern uint64_t spa_last_synced_txg(spa_t *spa); 450fa9e4066Sahrens extern uint64_t spa_first_txg(spa_t *spa); 45199653d4eSeschrock extern uint64_t spa_version(spa_t *spa); 452fa9e4066Sahrens extern int spa_state(spa_t *spa); 453fa9e4066Sahrens extern uint64_t spa_freeze_txg(spa_t *spa); 454fa9e4066Sahrens extern uint64_t spa_get_alloc(spa_t *spa); 455fa9e4066Sahrens extern uint64_t spa_get_space(spa_t *spa); 45699653d4eSeschrock extern uint64_t spa_get_dspace(spa_t *spa); 457fa9e4066Sahrens extern uint64_t spa_get_asize(spa_t *spa, uint64_t lsize); 45844cd46caSbillm extern uint64_t spa_version(spa_t *spa); 45944cd46caSbillm extern int spa_max_replication(spa_t *spa); 460fa9e4066Sahrens extern int spa_busy(void); 4610a4e9518Sgw extern uint8_t spa_get_failmode(spa_t *spa); 462*e14bb325SJeff Bonwick extern boolean_t spa_suspended(spa_t *spa); 463fa9e4066Sahrens 464fa9e4066Sahrens /* Miscellaneous support routines */ 465fa9e4066Sahrens extern int spa_rename(const char *oldname, const char *newname); 466fa9e4066Sahrens extern boolean_t spa_guid_exists(uint64_t pool_guid, uint64_t device_guid); 467fa9e4066Sahrens extern char *spa_strdup(const char *); 468fa9e4066Sahrens extern void spa_strfree(char *); 469fa9e4066Sahrens extern uint64_t spa_get_random(uint64_t range); 470d80c45e0Sbonwick extern void sprintf_blkptr(char *buf, int len, const blkptr_t *bp); 471fa9e4066Sahrens extern void spa_freeze(spa_t *spa); 472990b4856Slling extern void spa_upgrade(spa_t *spa, uint64_t version); 473fa9e4066Sahrens extern void spa_evict_all(void); 474c5904d13Seschrock extern vdev_t *spa_lookup_by_guid(spa_t *spa, uint64_t guid, 475c5904d13Seschrock boolean_t l2cache); 47699653d4eSeschrock extern boolean_t spa_has_spare(spa_t *, uint64_t guid); 47799653d4eSeschrock extern uint64_t bp_get_dasize(spa_t *spa, const blkptr_t *bp); 4786ce0521aSperrin extern boolean_t spa_has_slogs(spa_t *spa); 479bf82a41bSeschrock extern boolean_t spa_is_root(spa_t *spa); 480ea8dc4b6Seschrock 48106eeb2adSek /* history logging */ 482ecd6cf80Smarks typedef enum history_log_type { 483ecd6cf80Smarks LOG_CMD_POOL_CREATE, 484ecd6cf80Smarks LOG_CMD_NORMAL, 485ecd6cf80Smarks LOG_INTERNAL 486ecd6cf80Smarks } history_log_type_t; 487ecd6cf80Smarks 488ecd6cf80Smarks typedef struct history_arg { 489ecd6cf80Smarks const char *ha_history_str; 490ecd6cf80Smarks history_log_type_t ha_log_type; 491ecd6cf80Smarks history_internal_events_t ha_event; 492ecd6cf80Smarks char ha_zone[MAXPATHLEN]; 493ecd6cf80Smarks } history_arg_t; 494ecd6cf80Smarks 495ecd6cf80Smarks extern char *spa_his_ievent_table[]; 496ecd6cf80Smarks 49706eeb2adSek extern void spa_history_create_obj(spa_t *spa, dmu_tx_t *tx); 49806eeb2adSek extern int spa_history_get(spa_t *spa, uint64_t *offset, uint64_t *len_read, 49906eeb2adSek char *his_buf); 50006eeb2adSek extern int spa_history_log(spa_t *spa, const char *his_buf, 501ecd6cf80Smarks history_log_type_t what); 502ecd6cf80Smarks void spa_history_internal_log(history_internal_events_t event, spa_t *spa, 503ecd6cf80Smarks dmu_tx_t *tx, cred_t *cr, const char *fmt, ...); 50406eeb2adSek 505ea8dc4b6Seschrock /* error handling */ 506ea8dc4b6Seschrock struct zbookmark; 507ea8dc4b6Seschrock struct zio; 508ea8dc4b6Seschrock extern void spa_log_error(spa_t *spa, struct zio *zio); 509ea8dc4b6Seschrock extern void zfs_ereport_post(const char *class, spa_t *spa, vdev_t *vd, 510ea8dc4b6Seschrock struct zio *zio, uint64_t stateoroffset, uint64_t length); 5113d7072f8Seschrock extern void zfs_post_remove(spa_t *spa, vdev_t *vd); 5123d7072f8Seschrock extern void zfs_post_autoreplace(spa_t *spa, vdev_t *vd); 513ea8dc4b6Seschrock extern uint64_t spa_get_errlog_size(spa_t *spa); 514ea8dc4b6Seschrock extern int spa_get_errlog(spa_t *spa, void *uaddr, size_t *count); 515ea8dc4b6Seschrock extern void spa_errlog_rotate(spa_t *spa); 516ea8dc4b6Seschrock extern void spa_errlog_drain(spa_t *spa); 517ea8dc4b6Seschrock extern void spa_errlog_sync(spa_t *spa, uint64_t txg); 518ea8dc4b6Seschrock extern void spa_get_errlists(spa_t *spa, avl_tree_t *last, avl_tree_t *scrub); 519fa9e4066Sahrens 52087db74c1Sek /* vdev cache */ 52187db74c1Sek extern void vdev_cache_stat_init(void); 52287db74c1Sek extern void vdev_cache_stat_fini(void); 52387db74c1Sek 524fa9e4066Sahrens /* Initialization and termination */ 525fa9e4066Sahrens extern void spa_init(int flags); 526fa9e4066Sahrens extern void spa_fini(void); 527e7cbe64fSgw extern void spa_boot_init(); 528fa9e4066Sahrens 529b1b8ab34Slling /* properties */ 530990b4856Slling extern int spa_prop_set(spa_t *spa, nvlist_t *nvp); 531990b4856Slling extern int spa_prop_get(spa_t *spa, nvlist_t **nvp); 532990b4856Slling extern void spa_prop_clear_bootfs(spa_t *spa, uint64_t obj, dmu_tx_t *tx); 533b1b8ab34Slling 5343d7072f8Seschrock /* asynchronous event notification */ 5353d7072f8Seschrock extern void spa_event_notify(spa_t *spa, vdev_t *vdev, const char *name); 5363d7072f8Seschrock 537fa9e4066Sahrens #ifdef ZFS_DEBUG 538c0a81264Sek #define dprintf_bp(bp, fmt, ...) do { \ 539c0a81264Sek if (zfs_flags & ZFS_DEBUG_DPRINTF) { \ 540c0a81264Sek char *__blkbuf = kmem_alloc(BP_SPRINTF_LEN, KM_SLEEP); \ 541c0a81264Sek sprintf_blkptr(__blkbuf, BP_SPRINTF_LEN, (bp)); \ 542c0a81264Sek dprintf(fmt " %s\n", __VA_ARGS__, __blkbuf); \ 543c0a81264Sek kmem_free(__blkbuf, BP_SPRINTF_LEN); \ 544fa9e4066Sahrens } \ 545fa9e4066Sahrens _NOTE(CONSTCOND) } while (0) 546fa9e4066Sahrens #else 547fa9e4066Sahrens #define dprintf_bp(bp, fmt, ...) 548fa9e4066Sahrens #endif 549fa9e4066Sahrens 550fa9e4066Sahrens extern int spa_mode; /* mode, e.g. FREAD | FWRITE */ 551fa9e4066Sahrens 552fa9e4066Sahrens #ifdef __cplusplus 553fa9e4066Sahrens } 554fa9e4066Sahrens #endif 555fa9e4066Sahrens 556fa9e4066Sahrens #endif /* _SYS_SPA_H */ 557