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 /* 223f9d6ad7SLin Ling * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved. 234ba5b961SDan Kimmel * Copyright (c) 2011, 2016 by Delphix. All rights reserved. 24e9103aaeSGarrett D'Amore * Copyright 2011 Nexenta Systems, Inc. All rights reserved. 25bc9014e6SJustin Gibbs * Copyright (c) 2014 Spectra Logic Corporation, All rights reserved. 2645818ee1SMatthew Ahrens * Copyright 2013 Saso Kiselkov. All rights reserved. 27c3d26abcSMatthew Ahrens * Copyright (c) 2014 Integros [integros.com] 28*ce1577b0SDave Eddy * Copyright 2017 Joyent, Inc. 29fa9e4066Sahrens */ 30fa9e4066Sahrens 31fa9e4066Sahrens #ifndef _SYS_SPA_H 32fa9e4066Sahrens #define _SYS_SPA_H 33fa9e4066Sahrens 34fa9e4066Sahrens #include <sys/avl.h> 35fa9e4066Sahrens #include <sys/zfs_context.h> 36fa9e4066Sahrens #include <sys/nvpair.h> 37fa9e4066Sahrens #include <sys/sysmacros.h> 38fa9e4066Sahrens #include <sys/types.h> 39fa9e4066Sahrens #include <sys/fs/zfs.h> 404ba5b961SDan Kimmel #include <sys/dmu.h> 41fa9e4066Sahrens 42fa9e4066Sahrens #ifdef __cplusplus 43fa9e4066Sahrens extern "C" { 44fa9e4066Sahrens #endif 45fa9e4066Sahrens 46fa9e4066Sahrens /* 47fa9e4066Sahrens * Forward references that lots of things need. 48fa9e4066Sahrens */ 49fa9e4066Sahrens typedef struct spa spa_t; 50fa9e4066Sahrens typedef struct vdev vdev_t; 51fa9e4066Sahrens typedef struct metaslab metaslab_t; 52b24ab676SJeff Bonwick typedef struct metaslab_group metaslab_group_t; 53b24ab676SJeff Bonwick typedef struct metaslab_class metaslab_class_t; 54b24ab676SJeff Bonwick typedef struct zio zio_t; 55fa9e4066Sahrens typedef struct zilog zilog_t; 56fa94a07fSbrendan typedef struct spa_aux_vdev spa_aux_vdev_t; 57b24ab676SJeff Bonwick typedef struct ddt ddt_t; 58b24ab676SJeff Bonwick typedef struct ddt_entry ddt_entry_t; 59fa9e4066Sahrens struct dsl_pool; 604445fffbSMatthew Ahrens struct dsl_dataset; 61fa9e4066Sahrens 62fa9e4066Sahrens /* 63fa9e4066Sahrens * General-purpose 32-bit and 64-bit bitfield encodings. 64fa9e4066Sahrens */ 65fa9e4066Sahrens #define BF32_DECODE(x, low, len) P2PHASE((x) >> (low), 1U << (len)) 66fa9e4066Sahrens #define BF64_DECODE(x, low, len) P2PHASE((x) >> (low), 1ULL << (len)) 67fa9e4066Sahrens #define BF32_ENCODE(x, low, len) (P2PHASE((x), 1U << (len)) << (low)) 68fa9e4066Sahrens #define BF64_ENCODE(x, low, len) (P2PHASE((x), 1ULL << (len)) << (low)) 69fa9e4066Sahrens 70fa9e4066Sahrens #define BF32_GET(x, low, len) BF32_DECODE(x, low, len) 71fa9e4066Sahrens #define BF64_GET(x, low, len) BF64_DECODE(x, low, len) 72fa9e4066Sahrens 7343466aaeSMax Grossman #define BF32_SET(x, low, len, val) do { \ 7443466aaeSMax Grossman ASSERT3U(val, <, 1U << (len)); \ 7543466aaeSMax Grossman ASSERT3U(low + len, <=, 32); \ 7643466aaeSMax Grossman (x) ^= BF32_ENCODE((x >> low) ^ (val), low, len); \ 7743466aaeSMax Grossman _NOTE(CONSTCOND) } while (0) 7843466aaeSMax Grossman 7943466aaeSMax Grossman #define BF64_SET(x, low, len, val) do { \ 8043466aaeSMax Grossman ASSERT3U(val, <, 1ULL << (len)); \ 8143466aaeSMax Grossman ASSERT3U(low + len, <=, 64); \ 8243466aaeSMax Grossman ((x) ^= BF64_ENCODE((x >> low) ^ (val), low, len)); \ 8343466aaeSMax Grossman _NOTE(CONSTCOND) } while (0) 84fa9e4066Sahrens 85fa9e4066Sahrens #define BF32_GET_SB(x, low, len, shift, bias) \ 86fa9e4066Sahrens ((BF32_GET(x, low, len) + (bias)) << (shift)) 87fa9e4066Sahrens #define BF64_GET_SB(x, low, len, shift, bias) \ 88fa9e4066Sahrens ((BF64_GET(x, low, len) + (bias)) << (shift)) 89fa9e4066Sahrens 9043466aaeSMax Grossman #define BF32_SET_SB(x, low, len, shift, bias, val) do { \ 9143466aaeSMax Grossman ASSERT(IS_P2ALIGNED(val, 1U << shift)); \ 9243466aaeSMax Grossman ASSERT3S((val) >> (shift), >=, bias); \ 9343466aaeSMax Grossman BF32_SET(x, low, len, ((val) >> (shift)) - (bias)); \ 9443466aaeSMax Grossman _NOTE(CONSTCOND) } while (0) 9543466aaeSMax Grossman #define BF64_SET_SB(x, low, len, shift, bias, val) do { \ 9643466aaeSMax Grossman ASSERT(IS_P2ALIGNED(val, 1ULL << shift)); \ 9743466aaeSMax Grossman ASSERT3S((val) >> (shift), >=, bias); \ 9843466aaeSMax Grossman BF64_SET(x, low, len, ((val) >> (shift)) - (bias)); \ 9943466aaeSMax Grossman _NOTE(CONSTCOND) } while (0) 100fa9e4066Sahrens 101fa9e4066Sahrens /* 102b5152584SMatthew Ahrens * We currently support block sizes from 512 bytes to 16MB. 103b5152584SMatthew Ahrens * The benefits of larger blocks, and thus larger IO, need to be weighed 104b5152584SMatthew Ahrens * against the cost of COWing a giant block to modify one byte, and the 105b5152584SMatthew Ahrens * large latency of reading or writing a large block. 106b5152584SMatthew Ahrens * 107b5152584SMatthew Ahrens * Note that although blocks up to 16MB are supported, the recordsize 108b5152584SMatthew Ahrens * property can not be set larger than zfs_max_recordsize (default 1MB). 109b5152584SMatthew Ahrens * See the comment near zfs_max_recordsize in dsl_dataset.c for details. 110b5152584SMatthew Ahrens * 111b5152584SMatthew Ahrens * Note that although the LSIZE field of the blkptr_t can store sizes up 112b5152584SMatthew Ahrens * to 32MB, the dnode's dn_datablkszsec can only store sizes up to 113b5152584SMatthew Ahrens * 32MB - 512 bytes. Therefore, we limit SPA_MAXBLOCKSIZE to 16MB. 114fa9e4066Sahrens */ 115fa9e4066Sahrens #define SPA_MINBLOCKSHIFT 9 116b5152584SMatthew Ahrens #define SPA_OLD_MAXBLOCKSHIFT 17 117b5152584SMatthew Ahrens #define SPA_MAXBLOCKSHIFT 24 118fa9e4066Sahrens #define SPA_MINBLOCKSIZE (1ULL << SPA_MINBLOCKSHIFT) 119b5152584SMatthew Ahrens #define SPA_OLD_MAXBLOCKSIZE (1ULL << SPA_OLD_MAXBLOCKSHIFT) 120fa9e4066Sahrens #define SPA_MAXBLOCKSIZE (1ULL << SPA_MAXBLOCKSHIFT) 121fa9e4066Sahrens 122f7991ba4STim Haley /* 123f7991ba4STim Haley * Size of block to hold the configuration data (a packed nvlist) 124f7991ba4STim Haley */ 125ad135b5dSChristopher Siden #define SPA_CONFIG_BLOCKSIZE (1ULL << 14) 126f7991ba4STim Haley 127fa9e4066Sahrens /* 128fa9e4066Sahrens * The DVA size encodings for LSIZE and PSIZE support blocks up to 32MB. 129fa9e4066Sahrens * The ASIZE encoding should be at least 64 times larger (6 more bits) 130fa9e4066Sahrens * to support up to 4-way RAID-Z mirror mode with worst-case gang block 131fa9e4066Sahrens * overhead, three DVAs per bp, plus one more bit in case we do anything 132fa9e4066Sahrens * else that expands the ASIZE. 133fa9e4066Sahrens */ 134fa9e4066Sahrens #define SPA_LSIZEBITS 16 /* LSIZE up to 32M (2^16 * 512) */ 135fa9e4066Sahrens #define SPA_PSIZEBITS 16 /* PSIZE up to 32M (2^16 * 512) */ 136fa9e4066Sahrens #define SPA_ASIZEBITS 24 /* ASIZE up to 64 times larger */ 137fa9e4066Sahrens 138dcbf3bd6SGeorge Wilson #define SPA_COMPRESSBITS 7 139dcbf3bd6SGeorge Wilson 140fa9e4066Sahrens /* 141fa9e4066Sahrens * All SPA data is represented by 128-bit data virtual addresses (DVAs). 142fa9e4066Sahrens * The members of the dva_t should be considered opaque outside the SPA. 143fa9e4066Sahrens */ 144fa9e4066Sahrens typedef struct dva { 145fa9e4066Sahrens uint64_t dva_word[2]; 146fa9e4066Sahrens } dva_t; 147fa9e4066Sahrens 148fa9e4066Sahrens /* 149fa9e4066Sahrens * Each block has a 256-bit checksum -- strong enough for cryptographic hashes. 150fa9e4066Sahrens */ 151fa9e4066Sahrens typedef struct zio_cksum { 152fa9e4066Sahrens uint64_t zc_word[4]; 153fa9e4066Sahrens } zio_cksum_t; 154fa9e4066Sahrens 15545818ee1SMatthew Ahrens /* 15645818ee1SMatthew Ahrens * Some checksums/hashes need a 256-bit initialization salt. This salt is kept 15745818ee1SMatthew Ahrens * secret and is suitable for use in MAC algorithms as the key. 15845818ee1SMatthew Ahrens */ 15945818ee1SMatthew Ahrens typedef struct zio_cksum_salt { 16045818ee1SMatthew Ahrens uint8_t zcs_bytes[32]; 16145818ee1SMatthew Ahrens } zio_cksum_salt_t; 16245818ee1SMatthew Ahrens 163fa9e4066Sahrens /* 164fa9e4066Sahrens * Each block is described by its DVAs, time of birth, checksum, etc. 165fa9e4066Sahrens * The word-by-word, bit-by-bit layout of the blkptr is as follows: 166fa9e4066Sahrens * 167fa9e4066Sahrens * 64 56 48 40 32 24 16 8 0 168fa9e4066Sahrens * +-------+-------+-------+-------+-------+-------+-------+-------+ 169fa9e4066Sahrens * 0 | vdev1 | GRID | ASIZE | 170fa9e4066Sahrens * +-------+-------+-------+-------+-------+-------+-------+-------+ 171fa9e4066Sahrens * 1 |G| offset1 | 172fa9e4066Sahrens * +-------+-------+-------+-------+-------+-------+-------+-------+ 173fa9e4066Sahrens * 2 | vdev2 | GRID | ASIZE | 174fa9e4066Sahrens * +-------+-------+-------+-------+-------+-------+-------+-------+ 175fa9e4066Sahrens * 3 |G| offset2 | 176fa9e4066Sahrens * +-------+-------+-------+-------+-------+-------+-------+-------+ 177fa9e4066Sahrens * 4 | vdev3 | GRID | ASIZE | 178fa9e4066Sahrens * +-------+-------+-------+-------+-------+-------+-------+-------+ 179fa9e4066Sahrens * 5 |G| offset3 | 180fa9e4066Sahrens * +-------+-------+-------+-------+-------+-------+-------+-------+ 1815d7b4d43SMatthew Ahrens * 6 |BDX|lvl| type | cksum |E| comp| PSIZE | LSIZE | 182fa9e4066Sahrens * +-------+-------+-------+-------+-------+-------+-------+-------+ 183fa9e4066Sahrens * 7 | padding | 184fa9e4066Sahrens * +-------+-------+-------+-------+-------+-------+-------+-------+ 185fa9e4066Sahrens * 8 | padding | 186fa9e4066Sahrens * +-------+-------+-------+-------+-------+-------+-------+-------+ 187b24ab676SJeff Bonwick * 9 | physical birth txg | 188fa9e4066Sahrens * +-------+-------+-------+-------+-------+-------+-------+-------+ 189b24ab676SJeff Bonwick * a | logical birth txg | 190fa9e4066Sahrens * +-------+-------+-------+-------+-------+-------+-------+-------+ 191fa9e4066Sahrens * b | fill count | 192fa9e4066Sahrens * +-------+-------+-------+-------+-------+-------+-------+-------+ 193fa9e4066Sahrens * c | checksum[0] | 194fa9e4066Sahrens * +-------+-------+-------+-------+-------+-------+-------+-------+ 195fa9e4066Sahrens * d | checksum[1] | 196fa9e4066Sahrens * +-------+-------+-------+-------+-------+-------+-------+-------+ 197fa9e4066Sahrens * e | checksum[2] | 198fa9e4066Sahrens * +-------+-------+-------+-------+-------+-------+-------+-------+ 199fa9e4066Sahrens * f | checksum[3] | 200fa9e4066Sahrens * +-------+-------+-------+-------+-------+-------+-------+-------+ 201fa9e4066Sahrens * 202fa9e4066Sahrens * Legend: 203fa9e4066Sahrens * 204fa9e4066Sahrens * vdev virtual device ID 205fa9e4066Sahrens * offset offset into virtual device 206fa9e4066Sahrens * LSIZE logical size 207fa9e4066Sahrens * PSIZE physical size (after compression) 208fa9e4066Sahrens * ASIZE allocated size (including RAID-Z parity and gang block headers) 209fa9e4066Sahrens * GRID RAID-Z layout information (reserved for future use) 210fa9e4066Sahrens * cksum checksum function 211fa9e4066Sahrens * comp compression function 212fa9e4066Sahrens * G gang block indicator 213b24ab676SJeff Bonwick * B byteorder (endianness) 214b24ab676SJeff Bonwick * D dedup 2155d7b4d43SMatthew Ahrens * X encryption (on version 30, which is not supported) 2165d7b4d43SMatthew Ahrens * E blkptr_t contains embedded data (see below) 217fa9e4066Sahrens * lvl level of indirection 218b24ab676SJeff Bonwick * type DMU object type 219b24ab676SJeff Bonwick * phys birth txg of block allocation; zero if same as logical birth txg 220b24ab676SJeff Bonwick * log. birth transaction group in which the block was logically born 221fa9e4066Sahrens * fill count number of non-zero blocks under this bp 222fa9e4066Sahrens * checksum[4] 256-bit checksum of the data this bp describes 223fa9e4066Sahrens */ 2245d7b4d43SMatthew Ahrens 2255d7b4d43SMatthew Ahrens /* 2265d7b4d43SMatthew Ahrens * "Embedded" blkptr_t's don't actually point to a block, instead they 2275d7b4d43SMatthew Ahrens * have a data payload embedded in the blkptr_t itself. See the comment 2285d7b4d43SMatthew Ahrens * in blkptr.c for more details. 2295d7b4d43SMatthew Ahrens * 2305d7b4d43SMatthew Ahrens * The blkptr_t is laid out as follows: 2315d7b4d43SMatthew Ahrens * 2325d7b4d43SMatthew Ahrens * 64 56 48 40 32 24 16 8 0 2335d7b4d43SMatthew Ahrens * +-------+-------+-------+-------+-------+-------+-------+-------+ 2345d7b4d43SMatthew Ahrens * 0 | payload | 2355d7b4d43SMatthew Ahrens * 1 | payload | 2365d7b4d43SMatthew Ahrens * 2 | payload | 2375d7b4d43SMatthew Ahrens * 3 | payload | 2385d7b4d43SMatthew Ahrens * 4 | payload | 2395d7b4d43SMatthew Ahrens * 5 | payload | 2405d7b4d43SMatthew Ahrens * +-------+-------+-------+-------+-------+-------+-------+-------+ 2415d7b4d43SMatthew Ahrens * 6 |BDX|lvl| type | etype |E| comp| PSIZE| LSIZE | 2425d7b4d43SMatthew Ahrens * +-------+-------+-------+-------+-------+-------+-------+-------+ 2435d7b4d43SMatthew Ahrens * 7 | payload | 2445d7b4d43SMatthew Ahrens * 8 | payload | 2455d7b4d43SMatthew Ahrens * 9 | payload | 2465d7b4d43SMatthew Ahrens * +-------+-------+-------+-------+-------+-------+-------+-------+ 2475d7b4d43SMatthew Ahrens * a | logical birth txg | 2485d7b4d43SMatthew Ahrens * +-------+-------+-------+-------+-------+-------+-------+-------+ 2495d7b4d43SMatthew Ahrens * b | payload | 2505d7b4d43SMatthew Ahrens * c | payload | 2515d7b4d43SMatthew Ahrens * d | payload | 2525d7b4d43SMatthew Ahrens * e | payload | 2535d7b4d43SMatthew Ahrens * f | payload | 2545d7b4d43SMatthew Ahrens * +-------+-------+-------+-------+-------+-------+-------+-------+ 2555d7b4d43SMatthew Ahrens * 2565d7b4d43SMatthew Ahrens * Legend: 2575d7b4d43SMatthew Ahrens * 2585d7b4d43SMatthew Ahrens * payload contains the embedded data 2595d7b4d43SMatthew Ahrens * B (byteorder) byteorder (endianness) 2605d7b4d43SMatthew Ahrens * D (dedup) padding (set to zero) 2615d7b4d43SMatthew Ahrens * X encryption (set to zero; see above) 2625d7b4d43SMatthew Ahrens * E (embedded) set to one 2635d7b4d43SMatthew Ahrens * lvl indirection level 2645d7b4d43SMatthew Ahrens * type DMU object type 2655d7b4d43SMatthew Ahrens * etype how to interpret embedded data (BP_EMBEDDED_TYPE_*) 2665d7b4d43SMatthew Ahrens * comp compression function of payload 2675d7b4d43SMatthew Ahrens * PSIZE size of payload after compression, in bytes 2685d7b4d43SMatthew Ahrens * LSIZE logical size of payload, in bytes 2695d7b4d43SMatthew Ahrens * note that 25 bits is enough to store the largest 2705d7b4d43SMatthew Ahrens * "normal" BP's LSIZE (2^16 * 2^9) in bytes 2715d7b4d43SMatthew Ahrens * log. birth transaction group in which the block was logically born 2725d7b4d43SMatthew Ahrens * 2735d7b4d43SMatthew Ahrens * Note that LSIZE and PSIZE are stored in bytes, whereas for non-embedded 2745d7b4d43SMatthew Ahrens * bp's they are stored in units of SPA_MINBLOCKSHIFT. 2755d7b4d43SMatthew Ahrens * Generally, the generic BP_GET_*() macros can be used on embedded BP's. 2765d7b4d43SMatthew Ahrens * The B, D, X, lvl, type, and comp fields are stored the same as with normal 2775d7b4d43SMatthew Ahrens * BP's so the BP_SET_* macros can be used with them. etype, PSIZE, LSIZE must 2785d7b4d43SMatthew Ahrens * be set with the BPE_SET_* macros. BP_SET_EMBEDDED() should be called before 2795d7b4d43SMatthew Ahrens * other macros, as they assert that they are only used on BP's of the correct 2805d7b4d43SMatthew Ahrens * "embedded-ness". 2815d7b4d43SMatthew Ahrens */ 2825d7b4d43SMatthew Ahrens 2835d7b4d43SMatthew Ahrens #define BPE_GET_ETYPE(bp) \ 2845d7b4d43SMatthew Ahrens (ASSERT(BP_IS_EMBEDDED(bp)), \ 2855d7b4d43SMatthew Ahrens BF64_GET((bp)->blk_prop, 40, 8)) 2865d7b4d43SMatthew Ahrens #define BPE_SET_ETYPE(bp, t) do { \ 2875d7b4d43SMatthew Ahrens ASSERT(BP_IS_EMBEDDED(bp)); \ 2885d7b4d43SMatthew Ahrens BF64_SET((bp)->blk_prop, 40, 8, t); \ 2895d7b4d43SMatthew Ahrens _NOTE(CONSTCOND) } while (0) 2905d7b4d43SMatthew Ahrens 2915d7b4d43SMatthew Ahrens #define BPE_GET_LSIZE(bp) \ 2925d7b4d43SMatthew Ahrens (ASSERT(BP_IS_EMBEDDED(bp)), \ 2935d7b4d43SMatthew Ahrens BF64_GET_SB((bp)->blk_prop, 0, 25, 0, 1)) 2945d7b4d43SMatthew Ahrens #define BPE_SET_LSIZE(bp, x) do { \ 2955d7b4d43SMatthew Ahrens ASSERT(BP_IS_EMBEDDED(bp)); \ 2965d7b4d43SMatthew Ahrens BF64_SET_SB((bp)->blk_prop, 0, 25, 0, 1, x); \ 2975d7b4d43SMatthew Ahrens _NOTE(CONSTCOND) } while (0) 2985d7b4d43SMatthew Ahrens 2995d7b4d43SMatthew Ahrens #define BPE_GET_PSIZE(bp) \ 3005d7b4d43SMatthew Ahrens (ASSERT(BP_IS_EMBEDDED(bp)), \ 3015d7b4d43SMatthew Ahrens BF64_GET_SB((bp)->blk_prop, 25, 7, 0, 1)) 3025d7b4d43SMatthew Ahrens #define BPE_SET_PSIZE(bp, x) do { \ 3035d7b4d43SMatthew Ahrens ASSERT(BP_IS_EMBEDDED(bp)); \ 3045d7b4d43SMatthew Ahrens BF64_SET_SB((bp)->blk_prop, 25, 7, 0, 1, x); \ 3055d7b4d43SMatthew Ahrens _NOTE(CONSTCOND) } while (0) 3065d7b4d43SMatthew Ahrens 3075d7b4d43SMatthew Ahrens typedef enum bp_embedded_type { 3085d7b4d43SMatthew Ahrens BP_EMBEDDED_TYPE_DATA, 3095d7b4d43SMatthew Ahrens BP_EMBEDDED_TYPE_RESERVED, /* Reserved for an unintegrated feature. */ 3105d7b4d43SMatthew Ahrens NUM_BP_EMBEDDED_TYPES = BP_EMBEDDED_TYPE_RESERVED 3115d7b4d43SMatthew Ahrens } bp_embedded_type_t; 3125d7b4d43SMatthew Ahrens 3135d7b4d43SMatthew Ahrens #define BPE_NUM_WORDS 14 3145d7b4d43SMatthew Ahrens #define BPE_PAYLOAD_SIZE (BPE_NUM_WORDS * sizeof (uint64_t)) 3155d7b4d43SMatthew Ahrens #define BPE_IS_PAYLOADWORD(bp, wp) \ 3165d7b4d43SMatthew Ahrens ((wp) != &(bp)->blk_prop && (wp) != &(bp)->blk_birth) 3175d7b4d43SMatthew Ahrens 318fa9e4066Sahrens #define SPA_BLKPTRSHIFT 7 /* blkptr_t is 128 bytes */ 319fa9e4066Sahrens #define SPA_DVAS_PER_BP 3 /* Number of DVAs in a bp */ 320fa9e4066Sahrens 32143466aaeSMax Grossman /* 32243466aaeSMax Grossman * A block is a hole when it has either 1) never been written to, or 32343466aaeSMax Grossman * 2) is zero-filled. In both cases, ZFS can return all zeroes for all reads 32443466aaeSMax Grossman * without physically allocating disk space. Holes are represented in the 32543466aaeSMax Grossman * blkptr_t structure by zeroed blk_dva. Correct checking for holes is 32643466aaeSMax Grossman * done through the BP_IS_HOLE macro. For holes, the logical size, level, 32743466aaeSMax Grossman * DMU object type, and birth times are all also stored for holes that 32843466aaeSMax Grossman * were written to at some point (i.e. were punched after having been filled). 32943466aaeSMax Grossman */ 330b24ab676SJeff Bonwick typedef struct blkptr { 331b24ab676SJeff Bonwick dva_t blk_dva[SPA_DVAS_PER_BP]; /* Data Virtual Addresses */ 332b24ab676SJeff Bonwick uint64_t blk_prop; /* size, compression, type, etc */ 333b24ab676SJeff Bonwick uint64_t blk_pad[2]; /* Extra space for the future */ 334b24ab676SJeff Bonwick uint64_t blk_phys_birth; /* txg when block was allocated */ 335b24ab676SJeff Bonwick uint64_t blk_birth; /* transaction group at birth */ 336b24ab676SJeff Bonwick uint64_t blk_fill; /* fill count */ 337b24ab676SJeff Bonwick zio_cksum_t blk_cksum; /* 256-bit checksum */ 338b24ab676SJeff Bonwick } blkptr_t; 339b24ab676SJeff Bonwick 340fa9e4066Sahrens /* 341fa9e4066Sahrens * Macros to get and set fields in a bp or DVA. 342fa9e4066Sahrens */ 343fa9e4066Sahrens #define DVA_GET_ASIZE(dva) \ 34443466aaeSMax Grossman BF64_GET_SB((dva)->dva_word[0], 0, SPA_ASIZEBITS, SPA_MINBLOCKSHIFT, 0) 345fa9e4066Sahrens #define DVA_SET_ASIZE(dva, x) \ 34643466aaeSMax Grossman BF64_SET_SB((dva)->dva_word[0], 0, SPA_ASIZEBITS, \ 34743466aaeSMax Grossman SPA_MINBLOCKSHIFT, 0, x) 348fa9e4066Sahrens 349fa9e4066Sahrens #define DVA_GET_GRID(dva) BF64_GET((dva)->dva_word[0], 24, 8) 350fa9e4066Sahrens #define DVA_SET_GRID(dva, x) BF64_SET((dva)->dva_word[0], 24, 8, x) 351fa9e4066Sahrens 352fa9e4066Sahrens #define DVA_GET_VDEV(dva) BF64_GET((dva)->dva_word[0], 32, 32) 353fa9e4066Sahrens #define DVA_SET_VDEV(dva, x) BF64_SET((dva)->dva_word[0], 32, 32, x) 354fa9e4066Sahrens 355fa9e4066Sahrens #define DVA_GET_OFFSET(dva) \ 356fa9e4066Sahrens BF64_GET_SB((dva)->dva_word[1], 0, 63, SPA_MINBLOCKSHIFT, 0) 357fa9e4066Sahrens #define DVA_SET_OFFSET(dva, x) \ 358fa9e4066Sahrens BF64_SET_SB((dva)->dva_word[1], 0, 63, SPA_MINBLOCKSHIFT, 0, x) 359fa9e4066Sahrens 360fa9e4066Sahrens #define DVA_GET_GANG(dva) BF64_GET((dva)->dva_word[1], 63, 1) 361fa9e4066Sahrens #define DVA_SET_GANG(dva, x) BF64_SET((dva)->dva_word[1], 63, 1, x) 362fa9e4066Sahrens 363fa9e4066Sahrens #define BP_GET_LSIZE(bp) \ 3645d7b4d43SMatthew Ahrens (BP_IS_EMBEDDED(bp) ? \ 3655d7b4d43SMatthew Ahrens (BPE_GET_ETYPE(bp) == BP_EMBEDDED_TYPE_DATA ? BPE_GET_LSIZE(bp) : 0): \ 3665d7b4d43SMatthew Ahrens BF64_GET_SB((bp)->blk_prop, 0, SPA_LSIZEBITS, SPA_MINBLOCKSHIFT, 1)) 3675d7b4d43SMatthew Ahrens #define BP_SET_LSIZE(bp, x) do { \ 3685d7b4d43SMatthew Ahrens ASSERT(!BP_IS_EMBEDDED(bp)); \ 3695d7b4d43SMatthew Ahrens BF64_SET_SB((bp)->blk_prop, \ 3705d7b4d43SMatthew Ahrens 0, SPA_LSIZEBITS, SPA_MINBLOCKSHIFT, 1, x); \ 3715d7b4d43SMatthew Ahrens _NOTE(CONSTCOND) } while (0) 372fa9e4066Sahrens 373fa9e4066Sahrens #define BP_GET_PSIZE(bp) \ 3745d7b4d43SMatthew Ahrens (BP_IS_EMBEDDED(bp) ? 0 : \ 3755d7b4d43SMatthew Ahrens BF64_GET_SB((bp)->blk_prop, 16, SPA_PSIZEBITS, SPA_MINBLOCKSHIFT, 1)) 3765d7b4d43SMatthew Ahrens #define BP_SET_PSIZE(bp, x) do { \ 3775d7b4d43SMatthew Ahrens ASSERT(!BP_IS_EMBEDDED(bp)); \ 3785d7b4d43SMatthew Ahrens BF64_SET_SB((bp)->blk_prop, \ 3795d7b4d43SMatthew Ahrens 16, SPA_PSIZEBITS, SPA_MINBLOCKSHIFT, 1, x); \ 3805d7b4d43SMatthew Ahrens _NOTE(CONSTCOND) } while (0) 3815d7b4d43SMatthew Ahrens 382dcbf3bd6SGeorge Wilson #define BP_GET_COMPRESS(bp) \ 383dcbf3bd6SGeorge Wilson BF64_GET((bp)->blk_prop, 32, SPA_COMPRESSBITS) 384dcbf3bd6SGeorge Wilson #define BP_SET_COMPRESS(bp, x) \ 385dcbf3bd6SGeorge Wilson BF64_SET((bp)->blk_prop, 32, SPA_COMPRESSBITS, x) 386fa9e4066Sahrens 3875d7b4d43SMatthew Ahrens #define BP_IS_EMBEDDED(bp) BF64_GET((bp)->blk_prop, 39, 1) 3885d7b4d43SMatthew Ahrens #define BP_SET_EMBEDDED(bp, x) BF64_SET((bp)->blk_prop, 39, 1, x) 389b24ab676SJeff Bonwick 3905d7b4d43SMatthew Ahrens #define BP_GET_CHECKSUM(bp) \ 3915d7b4d43SMatthew Ahrens (BP_IS_EMBEDDED(bp) ? ZIO_CHECKSUM_OFF : \ 3925d7b4d43SMatthew Ahrens BF64_GET((bp)->blk_prop, 40, 8)) 3935d7b4d43SMatthew Ahrens #define BP_SET_CHECKSUM(bp, x) do { \ 3945d7b4d43SMatthew Ahrens ASSERT(!BP_IS_EMBEDDED(bp)); \ 3955d7b4d43SMatthew Ahrens BF64_SET((bp)->blk_prop, 40, 8, x); \ 3965d7b4d43SMatthew Ahrens _NOTE(CONSTCOND) } while (0) 397b24ab676SJeff Bonwick 398b24ab676SJeff Bonwick #define BP_GET_TYPE(bp) BF64_GET((bp)->blk_prop, 48, 8) 399b24ab676SJeff Bonwick #define BP_SET_TYPE(bp, x) BF64_SET((bp)->blk_prop, 48, 8, x) 400fa9e4066Sahrens 401b24ab676SJeff Bonwick #define BP_GET_LEVEL(bp) BF64_GET((bp)->blk_prop, 56, 5) 402b24ab676SJeff Bonwick #define BP_SET_LEVEL(bp, x) BF64_SET((bp)->blk_prop, 56, 5, x) 403fa9e4066Sahrens 404b24ab676SJeff Bonwick #define BP_GET_DEDUP(bp) BF64_GET((bp)->blk_prop, 62, 1) 405b24ab676SJeff Bonwick #define BP_SET_DEDUP(bp, x) BF64_SET((bp)->blk_prop, 62, 1, x) 406fa9e4066Sahrens 40743466aaeSMax Grossman #define BP_GET_BYTEORDER(bp) BF64_GET((bp)->blk_prop, 63, 1) 408b24ab676SJeff Bonwick #define BP_SET_BYTEORDER(bp, x) BF64_SET((bp)->blk_prop, 63, 1, x) 409b24ab676SJeff Bonwick 410b24ab676SJeff Bonwick #define BP_PHYSICAL_BIRTH(bp) \ 4115d7b4d43SMatthew Ahrens (BP_IS_EMBEDDED(bp) ? 0 : \ 4125d7b4d43SMatthew Ahrens (bp)->blk_phys_birth ? (bp)->blk_phys_birth : (bp)->blk_birth) 413b24ab676SJeff Bonwick 414b24ab676SJeff Bonwick #define BP_SET_BIRTH(bp, logical, physical) \ 415b24ab676SJeff Bonwick { \ 4165d7b4d43SMatthew Ahrens ASSERT(!BP_IS_EMBEDDED(bp)); \ 417b24ab676SJeff Bonwick (bp)->blk_birth = (logical); \ 418b24ab676SJeff Bonwick (bp)->blk_phys_birth = ((logical) == (physical) ? 0 : (physical)); \ 419b24ab676SJeff Bonwick } 420fa9e4066Sahrens 4215d7b4d43SMatthew Ahrens #define BP_GET_FILL(bp) (BP_IS_EMBEDDED(bp) ? 1 : (bp)->blk_fill) 4225d7b4d43SMatthew Ahrens 423770499e1SDan Kimmel #define BP_IS_METADATA(bp) \ 424770499e1SDan Kimmel (BP_GET_LEVEL(bp) > 0 || DMU_OT_IS_METADATA(BP_GET_TYPE(bp))) 425770499e1SDan Kimmel 426fa9e4066Sahrens #define BP_GET_ASIZE(bp) \ 4275d7b4d43SMatthew Ahrens (BP_IS_EMBEDDED(bp) ? 0 : \ 4285d7b4d43SMatthew Ahrens DVA_GET_ASIZE(&(bp)->blk_dva[0]) + \ 4295d7b4d43SMatthew Ahrens DVA_GET_ASIZE(&(bp)->blk_dva[1]) + \ 4305d7b4d43SMatthew Ahrens DVA_GET_ASIZE(&(bp)->blk_dva[2])) 43199653d4eSeschrock 432770499e1SDan Kimmel #define BP_GET_UCSIZE(bp) \ 433770499e1SDan Kimmel (BP_IS_METADATA(bp) ? BP_GET_PSIZE(bp) : BP_GET_LSIZE(bp)) 434fa9e4066Sahrens 43544cd46caSbillm #define BP_GET_NDVAS(bp) \ 4365d7b4d43SMatthew Ahrens (BP_IS_EMBEDDED(bp) ? 0 : \ 4375d7b4d43SMatthew Ahrens !!DVA_GET_ASIZE(&(bp)->blk_dva[0]) + \ 43844cd46caSbillm !!DVA_GET_ASIZE(&(bp)->blk_dva[1]) + \ 43944cd46caSbillm !!DVA_GET_ASIZE(&(bp)->blk_dva[2])) 44044cd46caSbillm 44144cd46caSbillm #define BP_COUNT_GANG(bp) \ 4425d7b4d43SMatthew Ahrens (BP_IS_EMBEDDED(bp) ? 0 : \ 44344cd46caSbillm (DVA_GET_GANG(&(bp)->blk_dva[0]) + \ 44444cd46caSbillm DVA_GET_GANG(&(bp)->blk_dva[1]) + \ 4455d7b4d43SMatthew Ahrens DVA_GET_GANG(&(bp)->blk_dva[2]))) 44644cd46caSbillm 447fa9e4066Sahrens #define DVA_EQUAL(dva1, dva2) \ 448fa9e4066Sahrens ((dva1)->dva_word[1] == (dva2)->dva_word[1] && \ 449fa9e4066Sahrens (dva1)->dva_word[0] == (dva2)->dva_word[0]) 450fa9e4066Sahrens 451b24ab676SJeff Bonwick #define BP_EQUAL(bp1, bp2) \ 452b24ab676SJeff Bonwick (BP_PHYSICAL_BIRTH(bp1) == BP_PHYSICAL_BIRTH(bp2) && \ 4535d7b4d43SMatthew Ahrens (bp1)->blk_birth == (bp2)->blk_birth && \ 454b24ab676SJeff Bonwick DVA_EQUAL(&(bp1)->blk_dva[0], &(bp2)->blk_dva[0]) && \ 455b24ab676SJeff Bonwick DVA_EQUAL(&(bp1)->blk_dva[1], &(bp2)->blk_dva[1]) && \ 456b24ab676SJeff Bonwick DVA_EQUAL(&(bp1)->blk_dva[2], &(bp2)->blk_dva[2])) 457b24ab676SJeff Bonwick 4586b4acc8bSahrens #define ZIO_CHECKSUM_EQUAL(zc1, zc2) \ 4596b4acc8bSahrens (0 == (((zc1).zc_word[0] - (zc2).zc_word[0]) | \ 4606b4acc8bSahrens ((zc1).zc_word[1] - (zc2).zc_word[1]) | \ 4616b4acc8bSahrens ((zc1).zc_word[2] - (zc2).zc_word[2]) | \ 4626b4acc8bSahrens ((zc1).zc_word[3] - (zc2).zc_word[3]))) 4636b4acc8bSahrens 46498110f08SMatthew Ahrens #define ZIO_CHECKSUM_IS_ZERO(zc) \ 46598110f08SMatthew Ahrens (0 == ((zc)->zc_word[0] | (zc)->zc_word[1] | \ 46698110f08SMatthew Ahrens (zc)->zc_word[2] | (zc)->zc_word[3])) 46798110f08SMatthew Ahrens 46898110f08SMatthew Ahrens #define ZIO_CHECKSUM_BSWAP(zcp) \ 46998110f08SMatthew Ahrens { \ 47098110f08SMatthew Ahrens (zcp)->zc_word[0] = BSWAP_64((zcp)->zc_word[0]); \ 47198110f08SMatthew Ahrens (zcp)->zc_word[1] = BSWAP_64((zcp)->zc_word[1]); \ 47298110f08SMatthew Ahrens (zcp)->zc_word[2] = BSWAP_64((zcp)->zc_word[2]); \ 47398110f08SMatthew Ahrens (zcp)->zc_word[3] = BSWAP_64((zcp)->zc_word[3]); \ 47498110f08SMatthew Ahrens } 47598110f08SMatthew Ahrens 47698110f08SMatthew Ahrens 477fa9e4066Sahrens #define DVA_IS_VALID(dva) (DVA_GET_ASIZE(dva) != 0) 478fa9e4066Sahrens 479fa9e4066Sahrens #define ZIO_SET_CHECKSUM(zcp, w0, w1, w2, w3) \ 480fa9e4066Sahrens { \ 481fa9e4066Sahrens (zcp)->zc_word[0] = w0; \ 482fa9e4066Sahrens (zcp)->zc_word[1] = w1; \ 483fa9e4066Sahrens (zcp)->zc_word[2] = w2; \ 484fa9e4066Sahrens (zcp)->zc_word[3] = w3; \ 485fa9e4066Sahrens } 486fa9e4066Sahrens 4875d7b4d43SMatthew Ahrens #define BP_IDENTITY(bp) (ASSERT(!BP_IS_EMBEDDED(bp)), &(bp)->blk_dva[0]) 4885d7b4d43SMatthew Ahrens #define BP_IS_GANG(bp) \ 4895d7b4d43SMatthew Ahrens (BP_IS_EMBEDDED(bp) ? B_FALSE : DVA_GET_GANG(BP_IDENTITY(bp))) 49043466aaeSMax Grossman #define DVA_IS_EMPTY(dva) ((dva)->dva_word[0] == 0ULL && \ 49143466aaeSMax Grossman (dva)->dva_word[1] == 0ULL) 4925d7b4d43SMatthew Ahrens #define BP_IS_HOLE(bp) \ 4935d7b4d43SMatthew Ahrens (!BP_IS_EMBEDDED(bp) && DVA_IS_EMPTY(BP_IDENTITY(bp))) 494fa9e4066Sahrens 4956e1f5caaSNeil Perrin /* BP_IS_RAIDZ(bp) assumes no block compression */ 4966e1f5caaSNeil Perrin #define BP_IS_RAIDZ(bp) (DVA_GET_ASIZE(&(bp)->blk_dva[0]) > \ 4976e1f5caaSNeil Perrin BP_GET_PSIZE(bp)) 4986e1f5caaSNeil Perrin 499e14bb325SJeff Bonwick #define BP_ZERO(bp) \ 500fa9e4066Sahrens { \ 501fa9e4066Sahrens (bp)->blk_dva[0].dva_word[0] = 0; \ 502fa9e4066Sahrens (bp)->blk_dva[0].dva_word[1] = 0; \ 503fa9e4066Sahrens (bp)->blk_dva[1].dva_word[0] = 0; \ 504fa9e4066Sahrens (bp)->blk_dva[1].dva_word[1] = 0; \ 505fa9e4066Sahrens (bp)->blk_dva[2].dva_word[0] = 0; \ 506fa9e4066Sahrens (bp)->blk_dva[2].dva_word[1] = 0; \ 507fa9e4066Sahrens (bp)->blk_prop = 0; \ 508fa9e4066Sahrens (bp)->blk_pad[0] = 0; \ 509fa9e4066Sahrens (bp)->blk_pad[1] = 0; \ 510b24ab676SJeff Bonwick (bp)->blk_phys_birth = 0; \ 511e14bb325SJeff Bonwick (bp)->blk_birth = 0; \ 512fa9e4066Sahrens (bp)->blk_fill = 0; \ 513fa9e4066Sahrens ZIO_SET_CHECKSUM(&(bp)->blk_cksum, 0, 0, 0, 0); \ 514fa9e4066Sahrens } 515fa9e4066Sahrens 516fa9e4066Sahrens #ifdef _BIG_ENDIAN 517fa9e4066Sahrens #define ZFS_HOST_BYTEORDER (0ULL) 518fa9e4066Sahrens #else 51943466aaeSMax Grossman #define ZFS_HOST_BYTEORDER (1ULL) 520fa9e4066Sahrens #endif 521fa9e4066Sahrens 522fa9e4066Sahrens #define BP_SHOULD_BYTESWAP(bp) (BP_GET_BYTEORDER(bp) != ZFS_HOST_BYTEORDER) 523fa9e4066Sahrens 52444cd46caSbillm #define BP_SPRINTF_LEN 320 525fbabab8fSmaybee 526b24ab676SJeff Bonwick /* 527b24ab676SJeff Bonwick * This macro allows code sharing between zfs, libzpool, and mdb. 528b24ab676SJeff Bonwick * 'func' is either snprintf() or mdb_snprintf(). 529b24ab676SJeff Bonwick * 'ws' (whitespace) can be ' ' for single-line format, '\n' for multi-line. 530b24ab676SJeff Bonwick */ 53143466aaeSMax Grossman #define SNPRINTF_BLKPTR(func, ws, buf, size, bp, type, checksum, compress) \ 532b24ab676SJeff Bonwick { \ 533b24ab676SJeff Bonwick static const char *copyname[] = \ 534b24ab676SJeff Bonwick { "zero", "single", "double", "triple" }; \ 535b24ab676SJeff Bonwick int len = 0; \ 536b24ab676SJeff Bonwick int copies = 0; \ 537b24ab676SJeff Bonwick \ 538b24ab676SJeff Bonwick if (bp == NULL) { \ 53943466aaeSMax Grossman len += func(buf + len, size - len, "<NULL>"); \ 540b24ab676SJeff Bonwick } else if (BP_IS_HOLE(bp)) { \ 54170163ac5SPrakash Surya len += func(buf + len, size - len, \ 54270163ac5SPrakash Surya "HOLE [L%llu %s] " \ 54370163ac5SPrakash Surya "size=%llxL birth=%lluL", \ 54470163ac5SPrakash Surya (u_longlong_t)BP_GET_LEVEL(bp), \ 54570163ac5SPrakash Surya type, \ 54670163ac5SPrakash Surya (u_longlong_t)BP_GET_LSIZE(bp), \ 54770163ac5SPrakash Surya (u_longlong_t)bp->blk_birth); \ 5485d7b4d43SMatthew Ahrens } else if (BP_IS_EMBEDDED(bp)) { \ 5495d7b4d43SMatthew Ahrens len = func(buf + len, size - len, \ 5505d7b4d43SMatthew Ahrens "EMBEDDED [L%llu %s] et=%u %s " \ 5515d7b4d43SMatthew Ahrens "size=%llxL/%llxP birth=%lluL", \ 5525d7b4d43SMatthew Ahrens (u_longlong_t)BP_GET_LEVEL(bp), \ 5535d7b4d43SMatthew Ahrens type, \ 5545d7b4d43SMatthew Ahrens (int)BPE_GET_ETYPE(bp), \ 5555d7b4d43SMatthew Ahrens compress, \ 5565d7b4d43SMatthew Ahrens (u_longlong_t)BPE_GET_LSIZE(bp), \ 5575d7b4d43SMatthew Ahrens (u_longlong_t)BPE_GET_PSIZE(bp), \ 5585d7b4d43SMatthew Ahrens (u_longlong_t)bp->blk_birth); \ 559b24ab676SJeff Bonwick } else { \ 560b24ab676SJeff Bonwick for (int d = 0; d < BP_GET_NDVAS(bp); d++) { \ 561b24ab676SJeff Bonwick const dva_t *dva = &bp->blk_dva[d]; \ 562b24ab676SJeff Bonwick if (DVA_IS_VALID(dva)) \ 563b24ab676SJeff Bonwick copies++; \ 564b24ab676SJeff Bonwick len += func(buf + len, size - len, \ 565b24ab676SJeff Bonwick "DVA[%d]=<%llu:%llx:%llx>%c", d, \ 566b24ab676SJeff Bonwick (u_longlong_t)DVA_GET_VDEV(dva), \ 567b24ab676SJeff Bonwick (u_longlong_t)DVA_GET_OFFSET(dva), \ 568b24ab676SJeff Bonwick (u_longlong_t)DVA_GET_ASIZE(dva), \ 569b24ab676SJeff Bonwick ws); \ 570b24ab676SJeff Bonwick } \ 571b24ab676SJeff Bonwick if (BP_IS_GANG(bp) && \ 572b24ab676SJeff Bonwick DVA_GET_ASIZE(&bp->blk_dva[2]) <= \ 573b24ab676SJeff Bonwick DVA_GET_ASIZE(&bp->blk_dva[1]) / 2) \ 574b24ab676SJeff Bonwick copies--; \ 575b24ab676SJeff Bonwick len += func(buf + len, size - len, \ 576b24ab676SJeff Bonwick "[L%llu %s] %s %s %s %s %s %s%c" \ 577b24ab676SJeff Bonwick "size=%llxL/%llxP birth=%lluL/%lluP fill=%llu%c" \ 578b24ab676SJeff Bonwick "cksum=%llx:%llx:%llx:%llx", \ 579b24ab676SJeff Bonwick (u_longlong_t)BP_GET_LEVEL(bp), \ 580b24ab676SJeff Bonwick type, \ 581b24ab676SJeff Bonwick checksum, \ 582b24ab676SJeff Bonwick compress, \ 583b24ab676SJeff Bonwick BP_GET_BYTEORDER(bp) == 0 ? "BE" : "LE", \ 584b24ab676SJeff Bonwick BP_IS_GANG(bp) ? "gang" : "contiguous", \ 585b24ab676SJeff Bonwick BP_GET_DEDUP(bp) ? "dedup" : "unique", \ 586b24ab676SJeff Bonwick copyname[copies], \ 587b24ab676SJeff Bonwick ws, \ 588b24ab676SJeff Bonwick (u_longlong_t)BP_GET_LSIZE(bp), \ 589b24ab676SJeff Bonwick (u_longlong_t)BP_GET_PSIZE(bp), \ 590b24ab676SJeff Bonwick (u_longlong_t)bp->blk_birth, \ 591b24ab676SJeff Bonwick (u_longlong_t)BP_PHYSICAL_BIRTH(bp), \ 5925d7b4d43SMatthew Ahrens (u_longlong_t)BP_GET_FILL(bp), \ 593b24ab676SJeff Bonwick ws, \ 594b24ab676SJeff Bonwick (u_longlong_t)bp->blk_cksum.zc_word[0], \ 595b24ab676SJeff Bonwick (u_longlong_t)bp->blk_cksum.zc_word[1], \ 596b24ab676SJeff Bonwick (u_longlong_t)bp->blk_cksum.zc_word[2], \ 597b24ab676SJeff Bonwick (u_longlong_t)bp->blk_cksum.zc_word[3]); \ 598b24ab676SJeff Bonwick } \ 599b24ab676SJeff Bonwick ASSERT(len < size); \ 600b24ab676SJeff Bonwick } 601b24ab676SJeff Bonwick 602ad23a2dbSjohansen #define BP_GET_BUFC_TYPE(bp) \ 603770499e1SDan Kimmel (BP_IS_METADATA(bp) ? ARC_BUFC_METADATA : ARC_BUFC_DATA) 604fa9e4066Sahrens 6051195e687SMark J Musante typedef enum spa_import_type { 6061195e687SMark J Musante SPA_IMPORT_EXISTING, 6071195e687SMark J Musante SPA_IMPORT_ASSEMBLE 6081195e687SMark J Musante } spa_import_type_t; 6091195e687SMark J Musante 610fa9e4066Sahrens /* state manipulation functions */ 611fa9e4066Sahrens extern int spa_open(const char *pool, spa_t **, void *tag); 612468c413aSTim Haley extern int spa_open_rewind(const char *pool, spa_t **, void *tag, 613468c413aSTim Haley nvlist_t *policy, nvlist_t **config); 614ad135b5dSChristopher Siden extern int spa_get_stats(const char *pool, nvlist_t **config, char *altroot, 615ad135b5dSChristopher Siden size_t buflen); 616990b4856Slling extern int spa_create(const char *pool, nvlist_t *config, nvlist_t *props, 6174445fffbSMatthew Ahrens nvlist_t *zplprops); 618051aabe6Staylor extern int spa_import_rootpool(char *devpath, char *devid); 6194b964adaSGeorge Wilson extern int spa_import(const char *pool, nvlist_t *config, nvlist_t *props, 6204b964adaSGeorge Wilson uint64_t flags); 621fa9e4066Sahrens extern nvlist_t *spa_tryimport(nvlist_t *tryconfig); 622fa9e4066Sahrens extern int spa_destroy(char *pool); 623394ab0cbSGeorge Wilson extern int spa_export(char *pool, nvlist_t **oldconfig, boolean_t force, 624394ab0cbSGeorge Wilson boolean_t hardforce); 625ea8dc4b6Seschrock extern int spa_reset(char *pool); 626ea8dc4b6Seschrock extern void spa_async_request(spa_t *spa, int flag); 627088f3894Sahrens extern void spa_async_unrequest(spa_t *spa, int flag); 628ea8dc4b6Seschrock extern void spa_async_suspend(spa_t *spa); 629ea8dc4b6Seschrock extern void spa_async_resume(spa_t *spa); 630ea8dc4b6Seschrock extern spa_t *spa_inject_addref(char *pool); 631ea8dc4b6Seschrock extern void spa_inject_delref(spa_t *spa); 6323f9d6ad7SLin Ling extern void spa_scan_stat_init(spa_t *spa); 6333f9d6ad7SLin Ling extern int spa_scan_get_stats(spa_t *spa, pool_scan_stat_t *ps); 634ea8dc4b6Seschrock 635e14bb325SJeff Bonwick #define SPA_ASYNC_CONFIG_UPDATE 0x01 636e14bb325SJeff Bonwick #define SPA_ASYNC_REMOVE 0x02 637e14bb325SJeff Bonwick #define SPA_ASYNC_PROBE 0x04 638e14bb325SJeff Bonwick #define SPA_ASYNC_RESILVER_DONE 0x08 639e14bb325SJeff Bonwick #define SPA_ASYNC_RESILVER 0x10 640573ca77eSGeorge Wilson #define SPA_ASYNC_AUTOEXPAND 0x20 6413f9d6ad7SLin Ling #define SPA_ASYNC_REMOVE_DONE 0x40 6423f9d6ad7SLin Ling #define SPA_ASYNC_REMOVE_STOP 0x80 6433f9d6ad7SLin Ling 6443f9d6ad7SLin Ling /* 6453f9d6ad7SLin Ling * Controls the behavior of spa_vdev_remove(). 6463f9d6ad7SLin Ling */ 6473f9d6ad7SLin Ling #define SPA_REMOVE_UNSPARE 0x01 6483f9d6ad7SLin Ling #define SPA_REMOVE_DONE 0x02 649fa9e4066Sahrens 650fa9e4066Sahrens /* device manipulation */ 651fa9e4066Sahrens extern int spa_vdev_add(spa_t *spa, nvlist_t *nvroot); 652ea8dc4b6Seschrock extern int spa_vdev_attach(spa_t *spa, uint64_t guid, nvlist_t *nvroot, 653fa9e4066Sahrens int replacing); 6548ad4d6ddSJeff Bonwick extern int spa_vdev_detach(spa_t *spa, uint64_t guid, uint64_t pguid, 6558ad4d6ddSJeff Bonwick int replace_done); 65699653d4eSeschrock extern int spa_vdev_remove(spa_t *spa, uint64_t guid, boolean_t unspare); 6573f9d6ad7SLin Ling extern boolean_t spa_vdev_remove_active(spa_t *spa); 658c67d9675Seschrock extern int spa_vdev_setpath(spa_t *spa, uint64_t guid, const char *newpath); 6596809eb4eSEric Schrock extern int spa_vdev_setfru(spa_t *spa, uint64_t guid, const char *newfru); 6601195e687SMark J Musante extern int spa_vdev_split_mirror(spa_t *spa, char *newname, nvlist_t *config, 6611195e687SMark J Musante nvlist_t *props, boolean_t exp); 662fa9e4066Sahrens 66399653d4eSeschrock /* spare state (which is global across all pools) */ 66439c23413Seschrock extern void spa_spare_add(vdev_t *vd); 66539c23413Seschrock extern void spa_spare_remove(vdev_t *vd); 66689a89ebfSlling extern boolean_t spa_spare_exists(uint64_t guid, uint64_t *pool, int *refcnt); 66739c23413Seschrock extern void spa_spare_activate(vdev_t *vd); 66899653d4eSeschrock 669fa94a07fSbrendan /* L2ARC state (which is global across all pools) */ 670fa94a07fSbrendan extern void spa_l2cache_add(vdev_t *vd); 671fa94a07fSbrendan extern void spa_l2cache_remove(vdev_t *vd); 672fa94a07fSbrendan extern boolean_t spa_l2cache_exists(uint64_t guid, uint64_t *pool); 673fa94a07fSbrendan extern void spa_l2cache_activate(vdev_t *vd); 674fa94a07fSbrendan extern void spa_l2cache_drop(spa_t *spa); 675fa94a07fSbrendan 6763f9d6ad7SLin Ling /* scanning */ 6773f9d6ad7SLin Ling extern int spa_scan(spa_t *spa, pool_scan_func_t func); 6783f9d6ad7SLin Ling extern int spa_scan_stop(spa_t *spa); 679fa9e4066Sahrens 680fa9e4066Sahrens /* spa syncing */ 681fa9e4066Sahrens extern void spa_sync(spa_t *spa, uint64_t txg); /* only for DMU use */ 682fa9e4066Sahrens extern void spa_sync_allpools(void); 683fa9e4066Sahrens 6843a737e0dSbrendan /* spa namespace global mutex */ 6853a737e0dSbrendan extern kmutex_t spa_namespace_lock; 6863a737e0dSbrendan 687fa9e4066Sahrens /* 688fa9e4066Sahrens * SPA configuration functions in spa_config.c 689fa9e4066Sahrens */ 6900373e76bSbonwick 6910373e76bSbonwick #define SPA_CONFIG_UPDATE_POOL 0 6920373e76bSbonwick #define SPA_CONFIG_UPDATE_VDEVS 1 6930373e76bSbonwick 694c5904d13Seschrock extern void spa_config_sync(spa_t *, boolean_t, boolean_t); 695fa9e4066Sahrens extern void spa_config_load(void); 696fa9e4066Sahrens extern nvlist_t *spa_all_configs(uint64_t *); 697fa9e4066Sahrens extern void spa_config_set(spa_t *spa, nvlist_t *config); 698fa9e4066Sahrens extern nvlist_t *spa_config_generate(spa_t *spa, vdev_t *vd, uint64_t txg, 699fa9e4066Sahrens int getstats); 7000373e76bSbonwick extern void spa_config_update(spa_t *spa, int what); 701fa9e4066Sahrens 702fa9e4066Sahrens /* 703fa9e4066Sahrens * Miscellaneous SPA routines in spa_misc.c 704fa9e4066Sahrens */ 705fa9e4066Sahrens 706fa9e4066Sahrens /* Namespace manipulation */ 707fa9e4066Sahrens extern spa_t *spa_lookup(const char *name); 708468c413aSTim Haley extern spa_t *spa_add(const char *name, nvlist_t *config, const char *altroot); 709fa9e4066Sahrens extern void spa_remove(spa_t *spa); 710fa9e4066Sahrens extern spa_t *spa_next(spa_t *prev); 711fa9e4066Sahrens 712fa9e4066Sahrens /* Refcount functions */ 713fa9e4066Sahrens extern void spa_open_ref(spa_t *spa, void *tag); 714fa9e4066Sahrens extern void spa_close(spa_t *spa, void *tag); 715bc9014e6SJustin Gibbs extern void spa_async_close(spa_t *spa, void *tag); 716fa9e4066Sahrens extern boolean_t spa_refcount_zero(spa_t *spa); 717fa9e4066Sahrens 7188f18d1faSGeorge Wilson #define SCL_NONE 0x00 719e14bb325SJeff Bonwick #define SCL_CONFIG 0x01 720e14bb325SJeff Bonwick #define SCL_STATE 0x02 721e14bb325SJeff Bonwick #define SCL_L2ARC 0x04 /* hack until L2ARC 2.0 */ 722e14bb325SJeff Bonwick #define SCL_ALLOC 0x08 723e14bb325SJeff Bonwick #define SCL_ZIO 0x10 724e14bb325SJeff Bonwick #define SCL_FREE 0x20 725e14bb325SJeff Bonwick #define SCL_VDEV 0x40 726e14bb325SJeff Bonwick #define SCL_LOCKS 7 727e14bb325SJeff Bonwick #define SCL_ALL ((1 << SCL_LOCKS) - 1) 728e14bb325SJeff Bonwick #define SCL_STATE_ALL (SCL_STATE | SCL_L2ARC | SCL_ZIO) 729e14bb325SJeff Bonwick 730e14bb325SJeff Bonwick /* Pool configuration locks */ 731e14bb325SJeff Bonwick extern int spa_config_tryenter(spa_t *spa, int locks, void *tag, krw_t rw); 732e14bb325SJeff Bonwick extern void spa_config_enter(spa_t *spa, int locks, void *tag, krw_t rw); 733e14bb325SJeff Bonwick extern void spa_config_exit(spa_t *spa, int locks, void *tag); 734e14bb325SJeff Bonwick extern int spa_config_held(spa_t *spa, int locks, krw_t rw); 735fa9e4066Sahrens 736fa9e4066Sahrens /* Pool vdev add/remove lock */ 737fa9e4066Sahrens extern uint64_t spa_vdev_enter(spa_t *spa); 73888ecc943SGeorge Wilson extern uint64_t spa_vdev_config_enter(spa_t *spa); 73988ecc943SGeorge Wilson extern void spa_vdev_config_exit(spa_t *spa, vdev_t *vd, uint64_t txg, 74088ecc943SGeorge Wilson int error, char *tag); 741fa9e4066Sahrens extern int spa_vdev_exit(spa_t *spa, vdev_t *vd, uint64_t txg, int error); 742fa9e4066Sahrens 743e14bb325SJeff Bonwick /* Pool vdev state change lock */ 7448f18d1faSGeorge Wilson extern void spa_vdev_state_enter(spa_t *spa, int oplock); 745e14bb325SJeff Bonwick extern int spa_vdev_state_exit(spa_t *spa, vdev_t *vd, int error); 746e14bb325SJeff Bonwick 747b24ab676SJeff Bonwick /* Log state */ 748b24ab676SJeff Bonwick typedef enum spa_log_state { 749b24ab676SJeff Bonwick SPA_LOG_UNKNOWN = 0, /* unknown log state */ 750b24ab676SJeff Bonwick SPA_LOG_MISSING, /* missing log(s) */ 751b24ab676SJeff Bonwick SPA_LOG_CLEAR, /* clear the log(s) */ 752b24ab676SJeff Bonwick SPA_LOG_GOOD, /* log(s) are good */ 753b24ab676SJeff Bonwick } spa_log_state_t; 754b24ab676SJeff Bonwick 755b24ab676SJeff Bonwick extern spa_log_state_t spa_get_log_state(spa_t *spa); 756b24ab676SJeff Bonwick extern void spa_set_log_state(spa_t *spa, spa_log_state_t state); 7571195e687SMark J Musante extern int spa_offline_log(spa_t *spa); 758b24ab676SJeff Bonwick 759b24ab676SJeff Bonwick /* Log claim callback */ 760b24ab676SJeff Bonwick extern void spa_claim_notify(zio_t *zio); 761b24ab676SJeff Bonwick 762fa9e4066Sahrens /* Accessor functions */ 76388b7b0f2SMatthew Ahrens extern boolean_t spa_shutting_down(spa_t *spa); 764fa9e4066Sahrens extern struct dsl_pool *spa_get_dsl(spa_t *spa); 765ad135b5dSChristopher Siden extern boolean_t spa_is_initializing(spa_t *spa); 766fa9e4066Sahrens extern blkptr_t *spa_get_rootblkptr(spa_t *spa); 767fa9e4066Sahrens extern void spa_set_rootblkptr(spa_t *spa, const blkptr_t *bp); 768fa9e4066Sahrens extern void spa_altroot(spa_t *, char *, size_t); 769fa9e4066Sahrens extern int spa_sync_pass(spa_t *spa); 770fa9e4066Sahrens extern char *spa_name(spa_t *spa); 771fa9e4066Sahrens extern uint64_t spa_guid(spa_t *spa); 772e9103aaeSGarrett D'Amore extern uint64_t spa_load_guid(spa_t *spa); 773fa9e4066Sahrens extern uint64_t spa_last_synced_txg(spa_t *spa); 774fa9e4066Sahrens extern uint64_t spa_first_txg(spa_t *spa); 775b24ab676SJeff Bonwick extern uint64_t spa_syncing_txg(spa_t *spa); 7763991b535SGeorge Wilson extern uint64_t spa_final_dirty_txg(spa_t *spa); 77799653d4eSeschrock extern uint64_t spa_version(spa_t *spa); 77888b7b0f2SMatthew Ahrens extern pool_state_t spa_state(spa_t *spa); 779b16da2e2SGeorge Wilson extern spa_load_state_t spa_load_state(spa_t *spa); 780fa9e4066Sahrens extern uint64_t spa_freeze_txg(spa_t *spa); 78161e255ceSMatthew Ahrens extern uint64_t spa_get_worst_case_asize(spa_t *spa, uint64_t lsize); 782485bbbf5SGeorge Wilson extern uint64_t spa_get_dspace(spa_t *spa); 783c39f2c8cSChristopher Siden extern uint64_t spa_get_slop_space(spa_t *spa); 784485bbbf5SGeorge Wilson extern void spa_update_dspace(spa_t *spa); 78544cd46caSbillm extern uint64_t spa_version(spa_t *spa); 786b24ab676SJeff Bonwick extern boolean_t spa_deflate(spa_t *spa); 787b24ab676SJeff Bonwick extern metaslab_class_t *spa_normal_class(spa_t *spa); 788b24ab676SJeff Bonwick extern metaslab_class_t *spa_log_class(spa_t *spa); 789bc9014e6SJustin Gibbs extern void spa_evicting_os_register(spa_t *, objset_t *os); 790bc9014e6SJustin Gibbs extern void spa_evicting_os_deregister(spa_t *, objset_t *os); 791bc9014e6SJustin Gibbs extern void spa_evicting_os_wait(spa_t *spa); 79244cd46caSbillm extern int spa_max_replication(spa_t *spa); 7933f9d6ad7SLin Ling extern int spa_prev_software_version(spa_t *spa); 794fa9e4066Sahrens extern int spa_busy(void); 7950a4e9518Sgw extern uint8_t spa_get_failmode(spa_t *spa); 796e14bb325SJeff Bonwick extern boolean_t spa_suspended(spa_t *spa); 797b24ab676SJeff Bonwick extern uint64_t spa_bootfs(spa_t *spa); 798b24ab676SJeff Bonwick extern uint64_t spa_delegation(spa_t *spa); 799b24ab676SJeff Bonwick extern objset_t *spa_meta_objset(spa_t *spa); 800283b8460SGeorge.Wilson extern uint64_t spa_deadman_synctime(spa_t *spa); 801fa9e4066Sahrens 802fa9e4066Sahrens /* Miscellaneous support routines */ 80343466aaeSMax Grossman extern void spa_activate_mos_feature(spa_t *spa, const char *feature, 80443466aaeSMax Grossman dmu_tx_t *tx); 805ad135b5dSChristopher Siden extern void spa_deactivate_mos_feature(spa_t *spa, const char *feature); 806fa9e4066Sahrens extern int spa_rename(const char *oldname, const char *newname); 807f9af39baSGeorge Wilson extern spa_t *spa_by_guid(uint64_t pool_guid, uint64_t device_guid); 808fa9e4066Sahrens extern boolean_t spa_guid_exists(uint64_t pool_guid, uint64_t device_guid); 809fa9e4066Sahrens extern char *spa_strdup(const char *); 810fa9e4066Sahrens extern void spa_strfree(char *); 811fa9e4066Sahrens extern uint64_t spa_get_random(uint64_t range); 8121195e687SMark J Musante extern uint64_t spa_generate_guid(spa_t *spa); 81343466aaeSMax Grossman extern void snprintf_blkptr(char *buf, size_t buflen, const blkptr_t *bp); 814fa9e4066Sahrens extern void spa_freeze(spa_t *spa); 815e9103aaeSGarrett D'Amore extern int spa_change_guid(spa_t *spa); 816990b4856Slling extern void spa_upgrade(spa_t *spa, uint64_t version); 817fa9e4066Sahrens extern void spa_evict_all(void); 818c5904d13Seschrock extern vdev_t *spa_lookup_by_guid(spa_t *spa, uint64_t guid, 819c5904d13Seschrock boolean_t l2cache); 82099653d4eSeschrock extern boolean_t spa_has_spare(spa_t *, uint64_t guid); 821b24ab676SJeff Bonwick extern uint64_t dva_get_dsize_sync(spa_t *spa, const dva_t *dva); 822b24ab676SJeff Bonwick extern uint64_t bp_get_dsize_sync(spa_t *spa, const blkptr_t *bp); 823b24ab676SJeff Bonwick extern uint64_t bp_get_dsize(spa_t *spa, const blkptr_t *bp); 8246ce0521aSperrin extern boolean_t spa_has_slogs(spa_t *spa); 825bf82a41bSeschrock extern boolean_t spa_is_root(spa_t *spa); 8268ad4d6ddSJeff Bonwick extern boolean_t spa_writeable(spa_t *spa); 82773527f44SAlex Reece extern boolean_t spa_has_pending_synctask(spa_t *spa); 828b5152584SMatthew Ahrens extern int spa_maxblocksize(spa_t *spa); 829f63ab3d5SMatthew Ahrens extern void zfs_blkptr_verify(spa_t *spa, const blkptr_t *bp); 830468c413aSTim Haley 8318ad4d6ddSJeff Bonwick extern int spa_mode(spa_t *spa); 832ca45db41SChris Kirby extern uint64_t strtonum(const char *str, char **nptr); 833ea8dc4b6Seschrock 834ecd6cf80Smarks extern char *spa_his_ievent_table[]; 835ecd6cf80Smarks 83606eeb2adSek extern void spa_history_create_obj(spa_t *spa, dmu_tx_t *tx); 83706eeb2adSek extern int spa_history_get(spa_t *spa, uint64_t *offset, uint64_t *len_read, 83806eeb2adSek char *his_buf); 8394445fffbSMatthew Ahrens extern int spa_history_log(spa_t *spa, const char *his_buf); 8404445fffbSMatthew Ahrens extern int spa_history_log_nvl(spa_t *spa, nvlist_t *nvl); 8414445fffbSMatthew Ahrens extern void spa_history_log_version(spa_t *spa, const char *operation); 8424445fffbSMatthew Ahrens extern void spa_history_log_internal(spa_t *spa, const char *operation, 8434445fffbSMatthew Ahrens dmu_tx_t *tx, const char *fmt, ...); 8444445fffbSMatthew Ahrens extern void spa_history_log_internal_ds(struct dsl_dataset *ds, const char *op, 8454445fffbSMatthew Ahrens dmu_tx_t *tx, const char *fmt, ...); 8464445fffbSMatthew Ahrens extern void spa_history_log_internal_dd(dsl_dir_t *dd, const char *operation, 8474445fffbSMatthew Ahrens dmu_tx_t *tx, const char *fmt, ...); 84806eeb2adSek 849ea8dc4b6Seschrock /* error handling */ 8507802d7bfSMatthew Ahrens struct zbookmark_phys; 851b24ab676SJeff Bonwick extern void spa_log_error(spa_t *spa, zio_t *zio); 852ea8dc4b6Seschrock extern void zfs_ereport_post(const char *class, spa_t *spa, vdev_t *vd, 853b24ab676SJeff Bonwick zio_t *zio, uint64_t stateoroffset, uint64_t length); 8543d7072f8Seschrock extern void zfs_post_remove(spa_t *spa, vdev_t *vd); 855069f55e2SEric Schrock extern void zfs_post_state_change(spa_t *spa, vdev_t *vd); 8563d7072f8Seschrock extern void zfs_post_autoreplace(spa_t *spa, vdev_t *vd); 857ea8dc4b6Seschrock extern uint64_t spa_get_errlog_size(spa_t *spa); 858ea8dc4b6Seschrock extern int spa_get_errlog(spa_t *spa, void *uaddr, size_t *count); 859ea8dc4b6Seschrock extern void spa_errlog_rotate(spa_t *spa); 860ea8dc4b6Seschrock extern void spa_errlog_drain(spa_t *spa); 861ea8dc4b6Seschrock extern void spa_errlog_sync(spa_t *spa, uint64_t txg); 862ea8dc4b6Seschrock extern void spa_get_errlists(spa_t *spa, avl_tree_t *last, avl_tree_t *scrub); 863fa9e4066Sahrens 86487db74c1Sek /* vdev cache */ 86587db74c1Sek extern void vdev_cache_stat_init(void); 86687db74c1Sek extern void vdev_cache_stat_fini(void); 86787db74c1Sek 868fa9e4066Sahrens /* Initialization and termination */ 869fa9e4066Sahrens extern void spa_init(int flags); 870fa9e4066Sahrens extern void spa_fini(void); 871e7cbe64fSgw extern void spa_boot_init(); 872fa9e4066Sahrens 873b1b8ab34Slling /* properties */ 874990b4856Slling extern int spa_prop_set(spa_t *spa, nvlist_t *nvp); 875990b4856Slling extern int spa_prop_get(spa_t *spa, nvlist_t **nvp); 876990b4856Slling extern void spa_prop_clear_bootfs(spa_t *spa, uint64_t obj, dmu_tx_t *tx); 877379c004dSEric Schrock extern void spa_configfile_set(spa_t *, nvlist_t *, boolean_t); 878b1b8ab34Slling 8793d7072f8Seschrock /* asynchronous event notification */ 880*ce1577b0SDave Eddy extern void spa_event_notify(spa_t *spa, vdev_t *vdev, nvlist_t *hist_nvl, 881*ce1577b0SDave Eddy const char *name); 8823d7072f8Seschrock 883fa9e4066Sahrens #ifdef ZFS_DEBUG 884c0a81264Sek #define dprintf_bp(bp, fmt, ...) do { \ 88543466aaeSMax Grossman if (zfs_flags & ZFS_DEBUG_DPRINTF) { \ 886c0a81264Sek char *__blkbuf = kmem_alloc(BP_SPRINTF_LEN, KM_SLEEP); \ 88743466aaeSMax Grossman snprintf_blkptr(__blkbuf, BP_SPRINTF_LEN, (bp)); \ 888c0a81264Sek dprintf(fmt " %s\n", __VA_ARGS__, __blkbuf); \ 889c0a81264Sek kmem_free(__blkbuf, BP_SPRINTF_LEN); \ 890fa9e4066Sahrens } \ 891fa9e4066Sahrens _NOTE(CONSTCOND) } while (0) 892fa9e4066Sahrens #else 893fa9e4066Sahrens #define dprintf_bp(bp, fmt, ...) 894fa9e4066Sahrens #endif 895fa9e4066Sahrens 89609c9d376SGeorge Wilson extern boolean_t spa_debug_enabled(spa_t *spa); 89709c9d376SGeorge Wilson #define spa_dbgmsg(spa, ...) \ 89809c9d376SGeorge Wilson { \ 89909c9d376SGeorge Wilson if (spa_debug_enabled(spa)) \ 90009c9d376SGeorge Wilson zfs_dbgmsg(__VA_ARGS__); \ 90109c9d376SGeorge Wilson } 90209c9d376SGeorge Wilson 9038ad4d6ddSJeff Bonwick extern int spa_mode_global; /* mode, e.g. FREAD | FWRITE */ 904fa9e4066Sahrens 905fa9e4066Sahrens #ifdef __cplusplus 906fa9e4066Sahrens } 907fa9e4066Sahrens #endif 908fa9e4066Sahrens 909fa9e4066Sahrens #endif /* _SYS_SPA_H */ 910