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 #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; 50fa94a07fSbrendan typedef struct spa_aux_vdev spa_aux_vdev_t; 51fa9e4066Sahrens struct dsl_pool; 52fa9e4066Sahrens 53fa9e4066Sahrens /* 54fa9e4066Sahrens * General-purpose 32-bit and 64-bit bitfield encodings. 55fa9e4066Sahrens */ 56fa9e4066Sahrens #define BF32_DECODE(x, low, len) P2PHASE((x) >> (low), 1U << (len)) 57fa9e4066Sahrens #define BF64_DECODE(x, low, len) P2PHASE((x) >> (low), 1ULL << (len)) 58fa9e4066Sahrens #define BF32_ENCODE(x, low, len) (P2PHASE((x), 1U << (len)) << (low)) 59fa9e4066Sahrens #define BF64_ENCODE(x, low, len) (P2PHASE((x), 1ULL << (len)) << (low)) 60fa9e4066Sahrens 61fa9e4066Sahrens #define BF32_GET(x, low, len) BF32_DECODE(x, low, len) 62fa9e4066Sahrens #define BF64_GET(x, low, len) BF64_DECODE(x, low, len) 63fa9e4066Sahrens 64fa9e4066Sahrens #define BF32_SET(x, low, len, val) \ 655ad82045Snd ((x) ^= BF32_ENCODE((x >> low) ^ (val), low, len)) 66fa9e4066Sahrens #define BF64_SET(x, low, len, val) \ 675ad82045Snd ((x) ^= BF64_ENCODE((x >> low) ^ (val), low, len)) 68fa9e4066Sahrens 69fa9e4066Sahrens #define BF32_GET_SB(x, low, len, shift, bias) \ 70fa9e4066Sahrens ((BF32_GET(x, low, len) + (bias)) << (shift)) 71fa9e4066Sahrens #define BF64_GET_SB(x, low, len, shift, bias) \ 72fa9e4066Sahrens ((BF64_GET(x, low, len) + (bias)) << (shift)) 73fa9e4066Sahrens 74fa9e4066Sahrens #define BF32_SET_SB(x, low, len, shift, bias, val) \ 75fa9e4066Sahrens BF32_SET(x, low, len, ((val) >> (shift)) - (bias)) 76fa9e4066Sahrens #define BF64_SET_SB(x, low, len, shift, bias, val) \ 77fa9e4066Sahrens BF64_SET(x, low, len, ((val) >> (shift)) - (bias)) 78fa9e4066Sahrens 79fa9e4066Sahrens /* 80fa9e4066Sahrens * We currently support nine block sizes, from 512 bytes to 128K. 81fa9e4066Sahrens * We could go higher, but the benefits are near-zero and the cost 82fa9e4066Sahrens * of COWing a giant block to modify one byte would become excessive. 83fa9e4066Sahrens */ 84fa9e4066Sahrens #define SPA_MINBLOCKSHIFT 9 85fa9e4066Sahrens #define SPA_MAXBLOCKSHIFT 17 86fa9e4066Sahrens #define SPA_MINBLOCKSIZE (1ULL << SPA_MINBLOCKSHIFT) 87fa9e4066Sahrens #define SPA_MAXBLOCKSIZE (1ULL << SPA_MAXBLOCKSHIFT) 88fa9e4066Sahrens 89fa9e4066Sahrens #define SPA_BLOCKSIZES (SPA_MAXBLOCKSHIFT - SPA_MINBLOCKSHIFT + 1) 90fa9e4066Sahrens 91fa9e4066Sahrens /* 92fa9e4066Sahrens * The DVA size encodings for LSIZE and PSIZE support blocks up to 32MB. 93fa9e4066Sahrens * The ASIZE encoding should be at least 64 times larger (6 more bits) 94fa9e4066Sahrens * to support up to 4-way RAID-Z mirror mode with worst-case gang block 95fa9e4066Sahrens * overhead, three DVAs per bp, plus one more bit in case we do anything 96fa9e4066Sahrens * else that expands the ASIZE. 97fa9e4066Sahrens */ 98fa9e4066Sahrens #define SPA_LSIZEBITS 16 /* LSIZE up to 32M (2^16 * 512) */ 99fa9e4066Sahrens #define SPA_PSIZEBITS 16 /* PSIZE up to 32M (2^16 * 512) */ 100fa9e4066Sahrens #define SPA_ASIZEBITS 24 /* ASIZE up to 64 times larger */ 101fa9e4066Sahrens 102fa9e4066Sahrens /* 103fa9e4066Sahrens * All SPA data is represented by 128-bit data virtual addresses (DVAs). 104fa9e4066Sahrens * The members of the dva_t should be considered opaque outside the SPA. 105fa9e4066Sahrens */ 106fa9e4066Sahrens typedef struct dva { 107fa9e4066Sahrens uint64_t dva_word[2]; 108fa9e4066Sahrens } dva_t; 109fa9e4066Sahrens 110fa9e4066Sahrens /* 111fa9e4066Sahrens * Each block has a 256-bit checksum -- strong enough for cryptographic hashes. 112fa9e4066Sahrens */ 113fa9e4066Sahrens typedef struct zio_cksum { 114fa9e4066Sahrens uint64_t zc_word[4]; 115fa9e4066Sahrens } zio_cksum_t; 116fa9e4066Sahrens 117fa9e4066Sahrens /* 118fa9e4066Sahrens * Each block is described by its DVAs, time of birth, checksum, etc. 119fa9e4066Sahrens * The word-by-word, bit-by-bit layout of the blkptr is as follows: 120fa9e4066Sahrens * 121fa9e4066Sahrens * 64 56 48 40 32 24 16 8 0 122fa9e4066Sahrens * +-------+-------+-------+-------+-------+-------+-------+-------+ 123fa9e4066Sahrens * 0 | vdev1 | GRID | ASIZE | 124fa9e4066Sahrens * +-------+-------+-------+-------+-------+-------+-------+-------+ 125fa9e4066Sahrens * 1 |G| offset1 | 126fa9e4066Sahrens * +-------+-------+-------+-------+-------+-------+-------+-------+ 127fa9e4066Sahrens * 2 | vdev2 | GRID | ASIZE | 128fa9e4066Sahrens * +-------+-------+-------+-------+-------+-------+-------+-------+ 129fa9e4066Sahrens * 3 |G| offset2 | 130fa9e4066Sahrens * +-------+-------+-------+-------+-------+-------+-------+-------+ 131fa9e4066Sahrens * 4 | vdev3 | GRID | ASIZE | 132fa9e4066Sahrens * +-------+-------+-------+-------+-------+-------+-------+-------+ 133fa9e4066Sahrens * 5 |G| offset3 | 134fa9e4066Sahrens * +-------+-------+-------+-------+-------+-------+-------+-------+ 135fa9e4066Sahrens * 6 |E| lvl | type | cksum | comp | PSIZE | LSIZE | 136fa9e4066Sahrens * +-------+-------+-------+-------+-------+-------+-------+-------+ 137fa9e4066Sahrens * 7 | padding | 138fa9e4066Sahrens * +-------+-------+-------+-------+-------+-------+-------+-------+ 139fa9e4066Sahrens * 8 | padding | 140fa9e4066Sahrens * +-------+-------+-------+-------+-------+-------+-------+-------+ 141fa9e4066Sahrens * 9 | padding | 142fa9e4066Sahrens * +-------+-------+-------+-------+-------+-------+-------+-------+ 143fa9e4066Sahrens * a | birth txg | 144fa9e4066Sahrens * +-------+-------+-------+-------+-------+-------+-------+-------+ 145fa9e4066Sahrens * b | fill count | 146fa9e4066Sahrens * +-------+-------+-------+-------+-------+-------+-------+-------+ 147fa9e4066Sahrens * c | checksum[0] | 148fa9e4066Sahrens * +-------+-------+-------+-------+-------+-------+-------+-------+ 149fa9e4066Sahrens * d | checksum[1] | 150fa9e4066Sahrens * +-------+-------+-------+-------+-------+-------+-------+-------+ 151fa9e4066Sahrens * e | checksum[2] | 152fa9e4066Sahrens * +-------+-------+-------+-------+-------+-------+-------+-------+ 153fa9e4066Sahrens * f | checksum[3] | 154fa9e4066Sahrens * +-------+-------+-------+-------+-------+-------+-------+-------+ 155fa9e4066Sahrens * 156fa9e4066Sahrens * Legend: 157fa9e4066Sahrens * 158fa9e4066Sahrens * vdev virtual device ID 159fa9e4066Sahrens * offset offset into virtual device 160fa9e4066Sahrens * LSIZE logical size 161fa9e4066Sahrens * PSIZE physical size (after compression) 162fa9e4066Sahrens * ASIZE allocated size (including RAID-Z parity and gang block headers) 163fa9e4066Sahrens * GRID RAID-Z layout information (reserved for future use) 164fa9e4066Sahrens * cksum checksum function 165fa9e4066Sahrens * comp compression function 166fa9e4066Sahrens * G gang block indicator 167fa9e4066Sahrens * E endianness 168fa9e4066Sahrens * type DMU object type 169fa9e4066Sahrens * lvl level of indirection 170fa9e4066Sahrens * birth txg transaction group in which the block was born 171fa9e4066Sahrens * fill count number of non-zero blocks under this bp 172fa9e4066Sahrens * checksum[4] 256-bit checksum of the data this bp describes 173fa9e4066Sahrens */ 174fa9e4066Sahrens typedef struct blkptr { 175fa9e4066Sahrens dva_t blk_dva[3]; /* 128-bit Data Virtual Address */ 176fa9e4066Sahrens uint64_t blk_prop; /* size, compression, type, etc */ 177fa9e4066Sahrens uint64_t blk_pad[3]; /* Extra space for the future */ 178fa9e4066Sahrens uint64_t blk_birth; /* transaction group at birth */ 179fa9e4066Sahrens uint64_t blk_fill; /* fill count */ 180fa9e4066Sahrens zio_cksum_t blk_cksum; /* 256-bit checksum */ 181fa9e4066Sahrens } blkptr_t; 182fa9e4066Sahrens 183fa9e4066Sahrens #define SPA_BLKPTRSHIFT 7 /* blkptr_t is 128 bytes */ 184fa9e4066Sahrens #define SPA_DVAS_PER_BP 3 /* Number of DVAs in a bp */ 185fa9e4066Sahrens 186fa9e4066Sahrens /* 187fa9e4066Sahrens * Macros to get and set fields in a bp or DVA. 188fa9e4066Sahrens */ 189fa9e4066Sahrens #define DVA_GET_ASIZE(dva) \ 190fa9e4066Sahrens BF64_GET_SB((dva)->dva_word[0], 0, 24, SPA_MINBLOCKSHIFT, 0) 191fa9e4066Sahrens #define DVA_SET_ASIZE(dva, x) \ 192fa9e4066Sahrens BF64_SET_SB((dva)->dva_word[0], 0, 24, SPA_MINBLOCKSHIFT, 0, x) 193fa9e4066Sahrens 194fa9e4066Sahrens #define DVA_GET_GRID(dva) BF64_GET((dva)->dva_word[0], 24, 8) 195fa9e4066Sahrens #define DVA_SET_GRID(dva, x) BF64_SET((dva)->dva_word[0], 24, 8, x) 196fa9e4066Sahrens 197fa9e4066Sahrens #define DVA_GET_VDEV(dva) BF64_GET((dva)->dva_word[0], 32, 32) 198fa9e4066Sahrens #define DVA_SET_VDEV(dva, x) BF64_SET((dva)->dva_word[0], 32, 32, x) 199fa9e4066Sahrens 200fa9e4066Sahrens #define DVA_GET_OFFSET(dva) \ 201fa9e4066Sahrens BF64_GET_SB((dva)->dva_word[1], 0, 63, SPA_MINBLOCKSHIFT, 0) 202fa9e4066Sahrens #define DVA_SET_OFFSET(dva, x) \ 203fa9e4066Sahrens BF64_SET_SB((dva)->dva_word[1], 0, 63, SPA_MINBLOCKSHIFT, 0, x) 204fa9e4066Sahrens 205fa9e4066Sahrens #define DVA_GET_GANG(dva) BF64_GET((dva)->dva_word[1], 63, 1) 206fa9e4066Sahrens #define DVA_SET_GANG(dva, x) BF64_SET((dva)->dva_word[1], 63, 1, x) 207fa9e4066Sahrens 208fa9e4066Sahrens #define BP_GET_LSIZE(bp) \ 209fa9e4066Sahrens (BP_IS_HOLE(bp) ? 0 : \ 210fa9e4066Sahrens BF64_GET_SB((bp)->blk_prop, 0, 16, SPA_MINBLOCKSHIFT, 1)) 211fa9e4066Sahrens #define BP_SET_LSIZE(bp, x) \ 212fa9e4066Sahrens BF64_SET_SB((bp)->blk_prop, 0, 16, SPA_MINBLOCKSHIFT, 1, x) 213fa9e4066Sahrens 214fa9e4066Sahrens #define BP_GET_PSIZE(bp) \ 215fa9e4066Sahrens BF64_GET_SB((bp)->blk_prop, 16, 16, SPA_MINBLOCKSHIFT, 1) 216fa9e4066Sahrens #define BP_SET_PSIZE(bp, x) \ 217fa9e4066Sahrens BF64_SET_SB((bp)->blk_prop, 16, 16, SPA_MINBLOCKSHIFT, 1, x) 218fa9e4066Sahrens 219fa9e4066Sahrens #define BP_GET_COMPRESS(bp) BF64_GET((bp)->blk_prop, 32, 8) 220fa9e4066Sahrens #define BP_SET_COMPRESS(bp, x) BF64_SET((bp)->blk_prop, 32, 8, x) 221fa9e4066Sahrens 222fa9e4066Sahrens #define BP_GET_CHECKSUM(bp) BF64_GET((bp)->blk_prop, 40, 8) 223fa9e4066Sahrens #define BP_SET_CHECKSUM(bp, x) BF64_SET((bp)->blk_prop, 40, 8, x) 224fa9e4066Sahrens 225fa9e4066Sahrens #define BP_GET_TYPE(bp) BF64_GET((bp)->blk_prop, 48, 8) 226fa9e4066Sahrens #define BP_SET_TYPE(bp, x) BF64_SET((bp)->blk_prop, 48, 8, x) 227fa9e4066Sahrens 228fa9e4066Sahrens #define BP_GET_LEVEL(bp) BF64_GET((bp)->blk_prop, 56, 5) 229fa9e4066Sahrens #define BP_SET_LEVEL(bp, x) BF64_SET((bp)->blk_prop, 56, 5, x) 230fa9e4066Sahrens 231fa9e4066Sahrens #define BP_GET_BYTEORDER(bp) (0 - BF64_GET((bp)->blk_prop, 63, 1)) 232fa9e4066Sahrens #define BP_SET_BYTEORDER(bp, x) BF64_SET((bp)->blk_prop, 63, 1, x) 233fa9e4066Sahrens 234fa9e4066Sahrens #define BP_GET_ASIZE(bp) \ 235fa9e4066Sahrens (DVA_GET_ASIZE(&(bp)->blk_dva[0]) + DVA_GET_ASIZE(&(bp)->blk_dva[1]) + \ 23699653d4eSeschrock DVA_GET_ASIZE(&(bp)->blk_dva[2])) 23799653d4eSeschrock 23899653d4eSeschrock #define BP_GET_UCSIZE(bp) \ 23999653d4eSeschrock ((BP_GET_LEVEL(bp) > 0 || dmu_ot[BP_GET_TYPE(bp)].ot_metadata) ? \ 24099653d4eSeschrock BP_GET_PSIZE(bp) : BP_GET_LSIZE(bp)); 241fa9e4066Sahrens 24244cd46caSbillm #define BP_GET_NDVAS(bp) \ 24344cd46caSbillm (!!DVA_GET_ASIZE(&(bp)->blk_dva[0]) + \ 24444cd46caSbillm !!DVA_GET_ASIZE(&(bp)->blk_dva[1]) + \ 24544cd46caSbillm !!DVA_GET_ASIZE(&(bp)->blk_dva[2])) 24644cd46caSbillm 24744cd46caSbillm #define BP_COUNT_GANG(bp) \ 24844cd46caSbillm (DVA_GET_GANG(&(bp)->blk_dva[0]) + \ 24944cd46caSbillm DVA_GET_GANG(&(bp)->blk_dva[1]) + \ 25044cd46caSbillm DVA_GET_GANG(&(bp)->blk_dva[2])) 25144cd46caSbillm 252fa9e4066Sahrens #define DVA_EQUAL(dva1, dva2) \ 253fa9e4066Sahrens ((dva1)->dva_word[1] == (dva2)->dva_word[1] && \ 254fa9e4066Sahrens (dva1)->dva_word[0] == (dva2)->dva_word[0]) 255fa9e4066Sahrens 2566b4acc8bSahrens #define ZIO_CHECKSUM_EQUAL(zc1, zc2) \ 2576b4acc8bSahrens (0 == (((zc1).zc_word[0] - (zc2).zc_word[0]) | \ 2586b4acc8bSahrens ((zc1).zc_word[1] - (zc2).zc_word[1]) | \ 2596b4acc8bSahrens ((zc1).zc_word[2] - (zc2).zc_word[2]) | \ 2606b4acc8bSahrens ((zc1).zc_word[3] - (zc2).zc_word[3]))) 2616b4acc8bSahrens 2626b4acc8bSahrens 263fa9e4066Sahrens #define DVA_IS_VALID(dva) (DVA_GET_ASIZE(dva) != 0) 264fa9e4066Sahrens 265fa9e4066Sahrens #define ZIO_SET_CHECKSUM(zcp, w0, w1, w2, w3) \ 266fa9e4066Sahrens { \ 267fa9e4066Sahrens (zcp)->zc_word[0] = w0; \ 268fa9e4066Sahrens (zcp)->zc_word[1] = w1; \ 269fa9e4066Sahrens (zcp)->zc_word[2] = w2; \ 270fa9e4066Sahrens (zcp)->zc_word[3] = w3; \ 271fa9e4066Sahrens } 272fa9e4066Sahrens 273fa9e4066Sahrens #define BP_IDENTITY(bp) (&(bp)->blk_dva[0]) 27444cd46caSbillm #define BP_IS_GANG(bp) DVA_GET_GANG(BP_IDENTITY(bp)) 27544cd46caSbillm #define BP_IS_HOLE(bp) ((bp)->blk_birth == 0) 276c717a561Smaybee #define BP_IS_OLDER(bp, txg) (!BP_IS_HOLE(bp) && (bp)->blk_birth < (txg)) 277fa9e4066Sahrens 2780a4e9518Sgw #define BP_ZERO_DVAS(bp) \ 279fa9e4066Sahrens { \ 280fa9e4066Sahrens (bp)->blk_dva[0].dva_word[0] = 0; \ 281fa9e4066Sahrens (bp)->blk_dva[0].dva_word[1] = 0; \ 282fa9e4066Sahrens (bp)->blk_dva[1].dva_word[0] = 0; \ 283fa9e4066Sahrens (bp)->blk_dva[1].dva_word[1] = 0; \ 284fa9e4066Sahrens (bp)->blk_dva[2].dva_word[0] = 0; \ 285fa9e4066Sahrens (bp)->blk_dva[2].dva_word[1] = 0; \ 2860a4e9518Sgw (bp)->blk_birth = 0; \ 2870a4e9518Sgw } 2880a4e9518Sgw 2890a4e9518Sgw #define BP_ZERO(bp) \ 2900a4e9518Sgw { \ 2910a4e9518Sgw BP_ZERO_DVAS(bp) \ 292fa9e4066Sahrens (bp)->blk_prop = 0; \ 293fa9e4066Sahrens (bp)->blk_pad[0] = 0; \ 294fa9e4066Sahrens (bp)->blk_pad[1] = 0; \ 295fa9e4066Sahrens (bp)->blk_pad[2] = 0; \ 296fa9e4066Sahrens (bp)->blk_fill = 0; \ 297fa9e4066Sahrens ZIO_SET_CHECKSUM(&(bp)->blk_cksum, 0, 0, 0, 0); \ 298fa9e4066Sahrens } 299fa9e4066Sahrens 300fa9e4066Sahrens /* 301fa9e4066Sahrens * Note: the byteorder is either 0 or -1, both of which are palindromes. 302fa9e4066Sahrens * This simplifies the endianness handling a bit. 303fa9e4066Sahrens */ 304fa9e4066Sahrens #ifdef _BIG_ENDIAN 305fa9e4066Sahrens #define ZFS_HOST_BYTEORDER (0ULL) 306fa9e4066Sahrens #else 307fa9e4066Sahrens #define ZFS_HOST_BYTEORDER (-1ULL) 308fa9e4066Sahrens #endif 309fa9e4066Sahrens 310fa9e4066Sahrens #define BP_SHOULD_BYTESWAP(bp) (BP_GET_BYTEORDER(bp) != ZFS_HOST_BYTEORDER) 311fa9e4066Sahrens 31244cd46caSbillm #define BP_SPRINTF_LEN 320 313fbabab8fSmaybee 314fa9e4066Sahrens #include <sys/dmu.h> 315fa9e4066Sahrens 316ad23a2dbSjohansen #define BP_GET_BUFC_TYPE(bp) \ 317ad23a2dbSjohansen (((BP_GET_LEVEL(bp) > 0) || (dmu_ot[BP_GET_TYPE(bp)].ot_metadata)) ? \ 318ad23a2dbSjohansen ARC_BUFC_METADATA : ARC_BUFC_DATA); 319fa9e4066Sahrens /* 320fa9e4066Sahrens * Routines found in spa.c 321fa9e4066Sahrens */ 322fa9e4066Sahrens 323fa9e4066Sahrens /* state manipulation functions */ 324fa9e4066Sahrens extern int spa_open(const char *pool, spa_t **, void *tag); 325ea8dc4b6Seschrock extern int spa_get_stats(const char *pool, nvlist_t **config, 326ea8dc4b6Seschrock char *altroot, size_t buflen); 327990b4856Slling extern int spa_create(const char *pool, nvlist_t *config, nvlist_t *props, 328228975ccSek const char *history_str); 329*051aabe6Staylor extern int spa_check_rootconf(char *devpath, char *devid, 330*051aabe6Staylor nvlist_t **bestconf, uint64_t *besttxg); 331e7cbe64fSgw extern boolean_t spa_rootdev_validate(nvlist_t *nv); 332*051aabe6Staylor extern int spa_import_rootpool(char *devpath, char *devid); 333990b4856Slling extern int spa_import(const char *pool, nvlist_t *config, nvlist_t *props); 334c5904d13Seschrock extern int spa_import_faulted(const char *, nvlist_t *, nvlist_t *); 335fa9e4066Sahrens extern nvlist_t *spa_tryimport(nvlist_t *tryconfig); 336fa9e4066Sahrens extern int spa_destroy(char *pool); 33744cd46caSbillm extern int spa_export(char *pool, nvlist_t **oldconfig); 338ea8dc4b6Seschrock extern int spa_reset(char *pool); 339ea8dc4b6Seschrock extern void spa_async_request(spa_t *spa, int flag); 340088f3894Sahrens extern void spa_async_unrequest(spa_t *spa, int flag); 341ea8dc4b6Seschrock extern void spa_async_suspend(spa_t *spa); 342ea8dc4b6Seschrock extern void spa_async_resume(spa_t *spa); 343ea8dc4b6Seschrock extern spa_t *spa_inject_addref(char *pool); 344ea8dc4b6Seschrock extern void spa_inject_delref(spa_t *spa); 345ea8dc4b6Seschrock 3463d7072f8Seschrock #define SPA_ASYNC_REMOVE 0x01 3473d7072f8Seschrock #define SPA_ASYNC_RESILVER_DONE 0x02 348ea8dc4b6Seschrock #define SPA_ASYNC_RESILVER 0x08 3490373e76bSbonwick #define SPA_ASYNC_CONFIG_UPDATE 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); 36239c23413Seschrock extern boolean_t spa_spare_exists(uint64_t guid, uint64_t *pool); 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 414fa9e4066Sahrens /* Pool configuration lock */ 415ea8dc4b6Seschrock extern void spa_config_enter(spa_t *spa, krw_t rw, void *tag); 416ea8dc4b6Seschrock extern void spa_config_exit(spa_t *spa, void *tag); 417fa9e4066Sahrens extern boolean_t spa_config_held(spa_t *spa, krw_t rw); 418fa9e4066Sahrens 419fa9e4066Sahrens /* Pool vdev add/remove lock */ 420fa9e4066Sahrens extern uint64_t spa_vdev_enter(spa_t *spa); 421fa9e4066Sahrens extern int spa_vdev_exit(spa_t *spa, vdev_t *vd, uint64_t txg, int error); 422fa9e4066Sahrens 423fa9e4066Sahrens /* Accessor functions */ 424fa9e4066Sahrens extern krwlock_t *spa_traverse_rwlock(spa_t *spa); 425088f3894Sahrens extern boolean_t spa_traverse_wanted(spa_t *spa); 426fa9e4066Sahrens extern struct dsl_pool *spa_get_dsl(spa_t *spa); 427fa9e4066Sahrens extern blkptr_t *spa_get_rootblkptr(spa_t *spa); 428fa9e4066Sahrens extern void spa_set_rootblkptr(spa_t *spa, const blkptr_t *bp); 429fa9e4066Sahrens extern void spa_altroot(spa_t *, char *, size_t); 430fa9e4066Sahrens extern int spa_sync_pass(spa_t *spa); 431fa9e4066Sahrens extern char *spa_name(spa_t *spa); 432fa9e4066Sahrens extern uint64_t spa_guid(spa_t *spa); 433fa9e4066Sahrens extern uint64_t spa_last_synced_txg(spa_t *spa); 434fa9e4066Sahrens extern uint64_t spa_first_txg(spa_t *spa); 43599653d4eSeschrock extern uint64_t spa_version(spa_t *spa); 436fa9e4066Sahrens extern int spa_state(spa_t *spa); 437fa9e4066Sahrens extern uint64_t spa_freeze_txg(spa_t *spa); 438fa9e4066Sahrens extern uint64_t spa_get_alloc(spa_t *spa); 439fa9e4066Sahrens extern uint64_t spa_get_space(spa_t *spa); 44099653d4eSeschrock extern uint64_t spa_get_dspace(spa_t *spa); 441fa9e4066Sahrens extern uint64_t spa_get_asize(spa_t *spa, uint64_t lsize); 44244cd46caSbillm extern uint64_t spa_version(spa_t *spa); 44344cd46caSbillm extern int spa_max_replication(spa_t *spa); 444fa9e4066Sahrens extern int spa_busy(void); 4450a4e9518Sgw extern uint8_t spa_get_failmode(spa_t *spa); 446fa9e4066Sahrens 447fa9e4066Sahrens /* Miscellaneous support routines */ 448fa9e4066Sahrens extern int spa_rename(const char *oldname, const char *newname); 449fa9e4066Sahrens extern boolean_t spa_guid_exists(uint64_t pool_guid, uint64_t device_guid); 450fa9e4066Sahrens extern char *spa_strdup(const char *); 451fa9e4066Sahrens extern void spa_strfree(char *); 452fa9e4066Sahrens extern uint64_t spa_get_random(uint64_t range); 453d80c45e0Sbonwick extern void sprintf_blkptr(char *buf, int len, const blkptr_t *bp); 454fa9e4066Sahrens extern void spa_freeze(spa_t *spa); 455990b4856Slling extern void spa_upgrade(spa_t *spa, uint64_t version); 456fa9e4066Sahrens extern void spa_evict_all(void); 457c5904d13Seschrock extern vdev_t *spa_lookup_by_guid(spa_t *spa, uint64_t guid, 458c5904d13Seschrock boolean_t l2cache); 45999653d4eSeschrock extern boolean_t spa_has_spare(spa_t *, uint64_t guid); 46099653d4eSeschrock extern uint64_t bp_get_dasize(spa_t *spa, const blkptr_t *bp); 4616ce0521aSperrin extern boolean_t spa_has_slogs(spa_t *spa); 462bf82a41bSeschrock extern boolean_t spa_is_root(spa_t *spa); 463ea8dc4b6Seschrock 46406eeb2adSek /* history logging */ 465ecd6cf80Smarks typedef enum history_log_type { 466ecd6cf80Smarks LOG_CMD_POOL_CREATE, 467ecd6cf80Smarks LOG_CMD_NORMAL, 468ecd6cf80Smarks LOG_INTERNAL 469ecd6cf80Smarks } history_log_type_t; 470ecd6cf80Smarks 471ecd6cf80Smarks typedef struct history_arg { 472ecd6cf80Smarks const char *ha_history_str; 473ecd6cf80Smarks history_log_type_t ha_log_type; 474ecd6cf80Smarks history_internal_events_t ha_event; 475ecd6cf80Smarks char ha_zone[MAXPATHLEN]; 476ecd6cf80Smarks } history_arg_t; 477ecd6cf80Smarks 478ecd6cf80Smarks extern char *spa_his_ievent_table[]; 479ecd6cf80Smarks 48006eeb2adSek extern void spa_history_create_obj(spa_t *spa, dmu_tx_t *tx); 48106eeb2adSek extern int spa_history_get(spa_t *spa, uint64_t *offset, uint64_t *len_read, 48206eeb2adSek char *his_buf); 48306eeb2adSek extern int spa_history_log(spa_t *spa, const char *his_buf, 484ecd6cf80Smarks history_log_type_t what); 485ecd6cf80Smarks void spa_history_internal_log(history_internal_events_t event, spa_t *spa, 486ecd6cf80Smarks dmu_tx_t *tx, cred_t *cr, const char *fmt, ...); 48706eeb2adSek 488ea8dc4b6Seschrock /* error handling */ 489ea8dc4b6Seschrock struct zbookmark; 490ea8dc4b6Seschrock struct zio; 491ea8dc4b6Seschrock extern void spa_log_error(spa_t *spa, struct zio *zio); 492ea8dc4b6Seschrock extern void zfs_ereport_post(const char *class, spa_t *spa, vdev_t *vd, 493ea8dc4b6Seschrock struct zio *zio, uint64_t stateoroffset, uint64_t length); 4943d7072f8Seschrock extern void zfs_post_remove(spa_t *spa, vdev_t *vd); 4953d7072f8Seschrock extern void zfs_post_autoreplace(spa_t *spa, vdev_t *vd); 496ea8dc4b6Seschrock extern uint64_t spa_get_errlog_size(spa_t *spa); 497ea8dc4b6Seschrock extern int spa_get_errlog(spa_t *spa, void *uaddr, size_t *count); 498ea8dc4b6Seschrock extern void spa_errlog_rotate(spa_t *spa); 499ea8dc4b6Seschrock extern void spa_errlog_drain(spa_t *spa); 500ea8dc4b6Seschrock extern void spa_errlog_sync(spa_t *spa, uint64_t txg); 501ea8dc4b6Seschrock extern void spa_get_errlists(spa_t *spa, avl_tree_t *last, avl_tree_t *scrub); 502fa9e4066Sahrens 50387db74c1Sek /* vdev cache */ 50487db74c1Sek extern void vdev_cache_stat_init(void); 50587db74c1Sek extern void vdev_cache_stat_fini(void); 50687db74c1Sek 507fa9e4066Sahrens /* Initialization and termination */ 508fa9e4066Sahrens extern void spa_init(int flags); 509fa9e4066Sahrens extern void spa_fini(void); 510e7cbe64fSgw extern void spa_boot_init(); 511fa9e4066Sahrens 512b1b8ab34Slling /* properties */ 513990b4856Slling extern int spa_prop_set(spa_t *spa, nvlist_t *nvp); 514990b4856Slling extern int spa_prop_get(spa_t *spa, nvlist_t **nvp); 515990b4856Slling extern void spa_prop_clear_bootfs(spa_t *spa, uint64_t obj, dmu_tx_t *tx); 516b1b8ab34Slling 5173d7072f8Seschrock /* asynchronous event notification */ 5183d7072f8Seschrock extern void spa_event_notify(spa_t *spa, vdev_t *vdev, const char *name); 5193d7072f8Seschrock 520fa9e4066Sahrens #ifdef ZFS_DEBUG 521c0a81264Sek #define dprintf_bp(bp, fmt, ...) do { \ 522c0a81264Sek if (zfs_flags & ZFS_DEBUG_DPRINTF) { \ 523c0a81264Sek char *__blkbuf = kmem_alloc(BP_SPRINTF_LEN, KM_SLEEP); \ 524c0a81264Sek sprintf_blkptr(__blkbuf, BP_SPRINTF_LEN, (bp)); \ 525c0a81264Sek dprintf(fmt " %s\n", __VA_ARGS__, __blkbuf); \ 526c0a81264Sek kmem_free(__blkbuf, BP_SPRINTF_LEN); \ 527fa9e4066Sahrens } \ 528fa9e4066Sahrens _NOTE(CONSTCOND) } while (0) 529fa9e4066Sahrens #else 530fa9e4066Sahrens #define dprintf_bp(bp, fmt, ...) 531fa9e4066Sahrens #endif 532fa9e4066Sahrens 533fa9e4066Sahrens extern int spa_mode; /* mode, e.g. FREAD | FWRITE */ 534fa9e4066Sahrens 535fa9e4066Sahrens #ifdef __cplusplus 536fa9e4066Sahrens } 537fa9e4066Sahrens #endif 538fa9e4066Sahrens 539fa9e4066Sahrens #endif /* _SYS_SPA_H */ 540