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. 2343466aaeSMax Grossman * Copyright (c) 2013 by Delphix. All rights reserved. 24e9103aaeSGarrett D'Amore * Copyright 2011 Nexenta Systems, Inc. All rights reserved. 25fa9e4066Sahrens */ 26fa9e4066Sahrens 27fa9e4066Sahrens #ifndef _SYS_SPA_H 28fa9e4066Sahrens #define _SYS_SPA_H 29fa9e4066Sahrens 30fa9e4066Sahrens #include <sys/avl.h> 31fa9e4066Sahrens #include <sys/zfs_context.h> 32fa9e4066Sahrens #include <sys/nvpair.h> 33fa9e4066Sahrens #include <sys/sysmacros.h> 34fa9e4066Sahrens #include <sys/types.h> 35fa9e4066Sahrens #include <sys/fs/zfs.h> 36fa9e4066Sahrens 37fa9e4066Sahrens #ifdef __cplusplus 38fa9e4066Sahrens extern "C" { 39fa9e4066Sahrens #endif 40fa9e4066Sahrens 41fa9e4066Sahrens /* 42fa9e4066Sahrens * Forward references that lots of things need. 43fa9e4066Sahrens */ 44fa9e4066Sahrens typedef struct spa spa_t; 45fa9e4066Sahrens typedef struct vdev vdev_t; 46fa9e4066Sahrens typedef struct metaslab metaslab_t; 47b24ab676SJeff Bonwick typedef struct metaslab_group metaslab_group_t; 48b24ab676SJeff Bonwick typedef struct metaslab_class metaslab_class_t; 49b24ab676SJeff Bonwick typedef struct zio zio_t; 50fa9e4066Sahrens typedef struct zilog zilog_t; 51fa94a07fSbrendan typedef struct spa_aux_vdev spa_aux_vdev_t; 52b24ab676SJeff Bonwick typedef struct ddt ddt_t; 53b24ab676SJeff Bonwick typedef struct ddt_entry ddt_entry_t; 54fa9e4066Sahrens struct dsl_pool; 554445fffbSMatthew Ahrens struct dsl_dataset; 56fa9e4066Sahrens 57fa9e4066Sahrens /* 58fa9e4066Sahrens * General-purpose 32-bit and 64-bit bitfield encodings. 59fa9e4066Sahrens */ 60fa9e4066Sahrens #define BF32_DECODE(x, low, len) P2PHASE((x) >> (low), 1U << (len)) 61fa9e4066Sahrens #define BF64_DECODE(x, low, len) P2PHASE((x) >> (low), 1ULL << (len)) 62fa9e4066Sahrens #define BF32_ENCODE(x, low, len) (P2PHASE((x), 1U << (len)) << (low)) 63fa9e4066Sahrens #define BF64_ENCODE(x, low, len) (P2PHASE((x), 1ULL << (len)) << (low)) 64fa9e4066Sahrens 65fa9e4066Sahrens #define BF32_GET(x, low, len) BF32_DECODE(x, low, len) 66fa9e4066Sahrens #define BF64_GET(x, low, len) BF64_DECODE(x, low, len) 67fa9e4066Sahrens 6843466aaeSMax Grossman #define BF32_SET(x, low, len, val) do { \ 6943466aaeSMax Grossman ASSERT3U(val, <, 1U << (len)); \ 7043466aaeSMax Grossman ASSERT3U(low + len, <=, 32); \ 7143466aaeSMax Grossman (x) ^= BF32_ENCODE((x >> low) ^ (val), low, len); \ 7243466aaeSMax Grossman _NOTE(CONSTCOND) } while (0) 7343466aaeSMax Grossman 7443466aaeSMax Grossman #define BF64_SET(x, low, len, val) do { \ 7543466aaeSMax Grossman ASSERT3U(val, <, 1ULL << (len)); \ 7643466aaeSMax Grossman ASSERT3U(low + len, <=, 64); \ 7743466aaeSMax Grossman ((x) ^= BF64_ENCODE((x >> low) ^ (val), low, len)); \ 7843466aaeSMax Grossman _NOTE(CONSTCOND) } while (0) 79fa9e4066Sahrens 80fa9e4066Sahrens #define BF32_GET_SB(x, low, len, shift, bias) \ 81fa9e4066Sahrens ((BF32_GET(x, low, len) + (bias)) << (shift)) 82fa9e4066Sahrens #define BF64_GET_SB(x, low, len, shift, bias) \ 83fa9e4066Sahrens ((BF64_GET(x, low, len) + (bias)) << (shift)) 84fa9e4066Sahrens 8543466aaeSMax Grossman #define BF32_SET_SB(x, low, len, shift, bias, val) do { \ 8643466aaeSMax Grossman ASSERT(IS_P2ALIGNED(val, 1U << shift)); \ 8743466aaeSMax Grossman ASSERT3S((val) >> (shift), >=, bias); \ 8843466aaeSMax Grossman BF32_SET(x, low, len, ((val) >> (shift)) - (bias)); \ 8943466aaeSMax Grossman _NOTE(CONSTCOND) } while (0) 9043466aaeSMax Grossman #define BF64_SET_SB(x, low, len, shift, bias, val) do { \ 9143466aaeSMax Grossman ASSERT(IS_P2ALIGNED(val, 1ULL << shift)); \ 9243466aaeSMax Grossman ASSERT3S((val) >> (shift), >=, bias); \ 9343466aaeSMax Grossman BF64_SET(x, low, len, ((val) >> (shift)) - (bias)); \ 9443466aaeSMax Grossman _NOTE(CONSTCOND) } while (0) 95fa9e4066Sahrens 96fa9e4066Sahrens /* 97fa9e4066Sahrens * We currently support nine block sizes, from 512 bytes to 128K. 98fa9e4066Sahrens * We could go higher, but the benefits are near-zero and the cost 99fa9e4066Sahrens * of COWing a giant block to modify one byte would become excessive. 100fa9e4066Sahrens */ 101fa9e4066Sahrens #define SPA_MINBLOCKSHIFT 9 102fa9e4066Sahrens #define SPA_MAXBLOCKSHIFT 17 103fa9e4066Sahrens #define SPA_MINBLOCKSIZE (1ULL << SPA_MINBLOCKSHIFT) 104fa9e4066Sahrens #define SPA_MAXBLOCKSIZE (1ULL << SPA_MAXBLOCKSHIFT) 105fa9e4066Sahrens 106fa9e4066Sahrens #define SPA_BLOCKSIZES (SPA_MAXBLOCKSHIFT - SPA_MINBLOCKSHIFT + 1) 107fa9e4066Sahrens 108f7991ba4STim Haley /* 109f7991ba4STim Haley * Size of block to hold the configuration data (a packed nvlist) 110f7991ba4STim Haley */ 111ad135b5dSChristopher Siden #define SPA_CONFIG_BLOCKSIZE (1ULL << 14) 112f7991ba4STim Haley 113fa9e4066Sahrens /* 114fa9e4066Sahrens * The DVA size encodings for LSIZE and PSIZE support blocks up to 32MB. 115fa9e4066Sahrens * The ASIZE encoding should be at least 64 times larger (6 more bits) 116fa9e4066Sahrens * to support up to 4-way RAID-Z mirror mode with worst-case gang block 117fa9e4066Sahrens * overhead, three DVAs per bp, plus one more bit in case we do anything 118fa9e4066Sahrens * else that expands the ASIZE. 119fa9e4066Sahrens */ 120fa9e4066Sahrens #define SPA_LSIZEBITS 16 /* LSIZE up to 32M (2^16 * 512) */ 121fa9e4066Sahrens #define SPA_PSIZEBITS 16 /* PSIZE up to 32M (2^16 * 512) */ 122fa9e4066Sahrens #define SPA_ASIZEBITS 24 /* ASIZE up to 64 times larger */ 123fa9e4066Sahrens 124fa9e4066Sahrens /* 125fa9e4066Sahrens * All SPA data is represented by 128-bit data virtual addresses (DVAs). 126fa9e4066Sahrens * The members of the dva_t should be considered opaque outside the SPA. 127fa9e4066Sahrens */ 128fa9e4066Sahrens typedef struct dva { 129fa9e4066Sahrens uint64_t dva_word[2]; 130fa9e4066Sahrens } dva_t; 131fa9e4066Sahrens 132fa9e4066Sahrens /* 133fa9e4066Sahrens * Each block has a 256-bit checksum -- strong enough for cryptographic hashes. 134fa9e4066Sahrens */ 135fa9e4066Sahrens typedef struct zio_cksum { 136fa9e4066Sahrens uint64_t zc_word[4]; 137fa9e4066Sahrens } zio_cksum_t; 138fa9e4066Sahrens 139fa9e4066Sahrens /* 140fa9e4066Sahrens * Each block is described by its DVAs, time of birth, checksum, etc. 141fa9e4066Sahrens * The word-by-word, bit-by-bit layout of the blkptr is as follows: 142fa9e4066Sahrens * 143fa9e4066Sahrens * 64 56 48 40 32 24 16 8 0 144fa9e4066Sahrens * +-------+-------+-------+-------+-------+-------+-------+-------+ 145fa9e4066Sahrens * 0 | vdev1 | GRID | ASIZE | 146fa9e4066Sahrens * +-------+-------+-------+-------+-------+-------+-------+-------+ 147fa9e4066Sahrens * 1 |G| offset1 | 148fa9e4066Sahrens * +-------+-------+-------+-------+-------+-------+-------+-------+ 149fa9e4066Sahrens * 2 | vdev2 | GRID | ASIZE | 150fa9e4066Sahrens * +-------+-------+-------+-------+-------+-------+-------+-------+ 151fa9e4066Sahrens * 3 |G| offset2 | 152fa9e4066Sahrens * +-------+-------+-------+-------+-------+-------+-------+-------+ 153fa9e4066Sahrens * 4 | vdev3 | GRID | ASIZE | 154fa9e4066Sahrens * +-------+-------+-------+-------+-------+-------+-------+-------+ 155fa9e4066Sahrens * 5 |G| offset3 | 156fa9e4066Sahrens * +-------+-------+-------+-------+-------+-------+-------+-------+ 157*5d7b4d43SMatthew Ahrens * 6 |BDX|lvl| type | cksum |E| comp| PSIZE | LSIZE | 158fa9e4066Sahrens * +-------+-------+-------+-------+-------+-------+-------+-------+ 159fa9e4066Sahrens * 7 | padding | 160fa9e4066Sahrens * +-------+-------+-------+-------+-------+-------+-------+-------+ 161fa9e4066Sahrens * 8 | padding | 162fa9e4066Sahrens * +-------+-------+-------+-------+-------+-------+-------+-------+ 163b24ab676SJeff Bonwick * 9 | physical birth txg | 164fa9e4066Sahrens * +-------+-------+-------+-------+-------+-------+-------+-------+ 165b24ab676SJeff Bonwick * a | logical birth txg | 166fa9e4066Sahrens * +-------+-------+-------+-------+-------+-------+-------+-------+ 167fa9e4066Sahrens * b | fill count | 168fa9e4066Sahrens * +-------+-------+-------+-------+-------+-------+-------+-------+ 169fa9e4066Sahrens * c | checksum[0] | 170fa9e4066Sahrens * +-------+-------+-------+-------+-------+-------+-------+-------+ 171fa9e4066Sahrens * d | checksum[1] | 172fa9e4066Sahrens * +-------+-------+-------+-------+-------+-------+-------+-------+ 173fa9e4066Sahrens * e | checksum[2] | 174fa9e4066Sahrens * +-------+-------+-------+-------+-------+-------+-------+-------+ 175fa9e4066Sahrens * f | checksum[3] | 176fa9e4066Sahrens * +-------+-------+-------+-------+-------+-------+-------+-------+ 177fa9e4066Sahrens * 178fa9e4066Sahrens * Legend: 179fa9e4066Sahrens * 180fa9e4066Sahrens * vdev virtual device ID 181fa9e4066Sahrens * offset offset into virtual device 182fa9e4066Sahrens * LSIZE logical size 183fa9e4066Sahrens * PSIZE physical size (after compression) 184fa9e4066Sahrens * ASIZE allocated size (including RAID-Z parity and gang block headers) 185fa9e4066Sahrens * GRID RAID-Z layout information (reserved for future use) 186fa9e4066Sahrens * cksum checksum function 187fa9e4066Sahrens * comp compression function 188fa9e4066Sahrens * G gang block indicator 189b24ab676SJeff Bonwick * B byteorder (endianness) 190b24ab676SJeff Bonwick * D dedup 191*5d7b4d43SMatthew Ahrens * X encryption (on version 30, which is not supported) 192*5d7b4d43SMatthew Ahrens * E blkptr_t contains embedded data (see below) 193fa9e4066Sahrens * lvl level of indirection 194b24ab676SJeff Bonwick * type DMU object type 195b24ab676SJeff Bonwick * phys birth txg of block allocation; zero if same as logical birth txg 196b24ab676SJeff Bonwick * log. birth transaction group in which the block was logically born 197fa9e4066Sahrens * fill count number of non-zero blocks under this bp 198fa9e4066Sahrens * checksum[4] 256-bit checksum of the data this bp describes 199fa9e4066Sahrens */ 200*5d7b4d43SMatthew Ahrens 201*5d7b4d43SMatthew Ahrens /* 202*5d7b4d43SMatthew Ahrens * "Embedded" blkptr_t's don't actually point to a block, instead they 203*5d7b4d43SMatthew Ahrens * have a data payload embedded in the blkptr_t itself. See the comment 204*5d7b4d43SMatthew Ahrens * in blkptr.c for more details. 205*5d7b4d43SMatthew Ahrens * 206*5d7b4d43SMatthew Ahrens * The blkptr_t is laid out as follows: 207*5d7b4d43SMatthew Ahrens * 208*5d7b4d43SMatthew Ahrens * 64 56 48 40 32 24 16 8 0 209*5d7b4d43SMatthew Ahrens * +-------+-------+-------+-------+-------+-------+-------+-------+ 210*5d7b4d43SMatthew Ahrens * 0 | payload | 211*5d7b4d43SMatthew Ahrens * 1 | payload | 212*5d7b4d43SMatthew Ahrens * 2 | payload | 213*5d7b4d43SMatthew Ahrens * 3 | payload | 214*5d7b4d43SMatthew Ahrens * 4 | payload | 215*5d7b4d43SMatthew Ahrens * 5 | payload | 216*5d7b4d43SMatthew Ahrens * +-------+-------+-------+-------+-------+-------+-------+-------+ 217*5d7b4d43SMatthew Ahrens * 6 |BDX|lvl| type | etype |E| comp| PSIZE| LSIZE | 218*5d7b4d43SMatthew Ahrens * +-------+-------+-------+-------+-------+-------+-------+-------+ 219*5d7b4d43SMatthew Ahrens * 7 | payload | 220*5d7b4d43SMatthew Ahrens * 8 | payload | 221*5d7b4d43SMatthew Ahrens * 9 | payload | 222*5d7b4d43SMatthew Ahrens * +-------+-------+-------+-------+-------+-------+-------+-------+ 223*5d7b4d43SMatthew Ahrens * a | logical birth txg | 224*5d7b4d43SMatthew Ahrens * +-------+-------+-------+-------+-------+-------+-------+-------+ 225*5d7b4d43SMatthew Ahrens * b | payload | 226*5d7b4d43SMatthew Ahrens * c | payload | 227*5d7b4d43SMatthew Ahrens * d | payload | 228*5d7b4d43SMatthew Ahrens * e | payload | 229*5d7b4d43SMatthew Ahrens * f | payload | 230*5d7b4d43SMatthew Ahrens * +-------+-------+-------+-------+-------+-------+-------+-------+ 231*5d7b4d43SMatthew Ahrens * 232*5d7b4d43SMatthew Ahrens * Legend: 233*5d7b4d43SMatthew Ahrens * 234*5d7b4d43SMatthew Ahrens * payload contains the embedded data 235*5d7b4d43SMatthew Ahrens * B (byteorder) byteorder (endianness) 236*5d7b4d43SMatthew Ahrens * D (dedup) padding (set to zero) 237*5d7b4d43SMatthew Ahrens * X encryption (set to zero; see above) 238*5d7b4d43SMatthew Ahrens * E (embedded) set to one 239*5d7b4d43SMatthew Ahrens * lvl indirection level 240*5d7b4d43SMatthew Ahrens * type DMU object type 241*5d7b4d43SMatthew Ahrens * etype how to interpret embedded data (BP_EMBEDDED_TYPE_*) 242*5d7b4d43SMatthew Ahrens * comp compression function of payload 243*5d7b4d43SMatthew Ahrens * PSIZE size of payload after compression, in bytes 244*5d7b4d43SMatthew Ahrens * LSIZE logical size of payload, in bytes 245*5d7b4d43SMatthew Ahrens * note that 25 bits is enough to store the largest 246*5d7b4d43SMatthew Ahrens * "normal" BP's LSIZE (2^16 * 2^9) in bytes 247*5d7b4d43SMatthew Ahrens * log. birth transaction group in which the block was logically born 248*5d7b4d43SMatthew Ahrens * 249*5d7b4d43SMatthew Ahrens * Note that LSIZE and PSIZE are stored in bytes, whereas for non-embedded 250*5d7b4d43SMatthew Ahrens * bp's they are stored in units of SPA_MINBLOCKSHIFT. 251*5d7b4d43SMatthew Ahrens * Generally, the generic BP_GET_*() macros can be used on embedded BP's. 252*5d7b4d43SMatthew Ahrens * The B, D, X, lvl, type, and comp fields are stored the same as with normal 253*5d7b4d43SMatthew Ahrens * BP's so the BP_SET_* macros can be used with them. etype, PSIZE, LSIZE must 254*5d7b4d43SMatthew Ahrens * be set with the BPE_SET_* macros. BP_SET_EMBEDDED() should be called before 255*5d7b4d43SMatthew Ahrens * other macros, as they assert that they are only used on BP's of the correct 256*5d7b4d43SMatthew Ahrens * "embedded-ness". 257*5d7b4d43SMatthew Ahrens */ 258*5d7b4d43SMatthew Ahrens 259*5d7b4d43SMatthew Ahrens #define BPE_GET_ETYPE(bp) \ 260*5d7b4d43SMatthew Ahrens (ASSERT(BP_IS_EMBEDDED(bp)), \ 261*5d7b4d43SMatthew Ahrens BF64_GET((bp)->blk_prop, 40, 8)) 262*5d7b4d43SMatthew Ahrens #define BPE_SET_ETYPE(bp, t) do { \ 263*5d7b4d43SMatthew Ahrens ASSERT(BP_IS_EMBEDDED(bp)); \ 264*5d7b4d43SMatthew Ahrens BF64_SET((bp)->blk_prop, 40, 8, t); \ 265*5d7b4d43SMatthew Ahrens _NOTE(CONSTCOND) } while (0) 266*5d7b4d43SMatthew Ahrens 267*5d7b4d43SMatthew Ahrens #define BPE_GET_LSIZE(bp) \ 268*5d7b4d43SMatthew Ahrens (ASSERT(BP_IS_EMBEDDED(bp)), \ 269*5d7b4d43SMatthew Ahrens BF64_GET_SB((bp)->blk_prop, 0, 25, 0, 1)) 270*5d7b4d43SMatthew Ahrens #define BPE_SET_LSIZE(bp, x) do { \ 271*5d7b4d43SMatthew Ahrens ASSERT(BP_IS_EMBEDDED(bp)); \ 272*5d7b4d43SMatthew Ahrens BF64_SET_SB((bp)->blk_prop, 0, 25, 0, 1, x); \ 273*5d7b4d43SMatthew Ahrens _NOTE(CONSTCOND) } while (0) 274*5d7b4d43SMatthew Ahrens 275*5d7b4d43SMatthew Ahrens #define BPE_GET_PSIZE(bp) \ 276*5d7b4d43SMatthew Ahrens (ASSERT(BP_IS_EMBEDDED(bp)), \ 277*5d7b4d43SMatthew Ahrens BF64_GET_SB((bp)->blk_prop, 25, 7, 0, 1)) 278*5d7b4d43SMatthew Ahrens #define BPE_SET_PSIZE(bp, x) do { \ 279*5d7b4d43SMatthew Ahrens ASSERT(BP_IS_EMBEDDED(bp)); \ 280*5d7b4d43SMatthew Ahrens BF64_SET_SB((bp)->blk_prop, 25, 7, 0, 1, x); \ 281*5d7b4d43SMatthew Ahrens _NOTE(CONSTCOND) } while (0) 282*5d7b4d43SMatthew Ahrens 283*5d7b4d43SMatthew Ahrens typedef enum bp_embedded_type { 284*5d7b4d43SMatthew Ahrens BP_EMBEDDED_TYPE_DATA, 285*5d7b4d43SMatthew Ahrens BP_EMBEDDED_TYPE_RESERVED, /* Reserved for an unintegrated feature. */ 286*5d7b4d43SMatthew Ahrens NUM_BP_EMBEDDED_TYPES = BP_EMBEDDED_TYPE_RESERVED 287*5d7b4d43SMatthew Ahrens } bp_embedded_type_t; 288*5d7b4d43SMatthew Ahrens 289*5d7b4d43SMatthew Ahrens #define BPE_NUM_WORDS 14 290*5d7b4d43SMatthew Ahrens #define BPE_PAYLOAD_SIZE (BPE_NUM_WORDS * sizeof (uint64_t)) 291*5d7b4d43SMatthew Ahrens #define BPE_IS_PAYLOADWORD(bp, wp) \ 292*5d7b4d43SMatthew Ahrens ((wp) != &(bp)->blk_prop && (wp) != &(bp)->blk_birth) 293*5d7b4d43SMatthew Ahrens 294fa9e4066Sahrens #define SPA_BLKPTRSHIFT 7 /* blkptr_t is 128 bytes */ 295fa9e4066Sahrens #define SPA_DVAS_PER_BP 3 /* Number of DVAs in a bp */ 296fa9e4066Sahrens 29743466aaeSMax Grossman /* 29843466aaeSMax Grossman * A block is a hole when it has either 1) never been written to, or 29943466aaeSMax Grossman * 2) is zero-filled. In both cases, ZFS can return all zeroes for all reads 30043466aaeSMax Grossman * without physically allocating disk space. Holes are represented in the 30143466aaeSMax Grossman * blkptr_t structure by zeroed blk_dva. Correct checking for holes is 30243466aaeSMax Grossman * done through the BP_IS_HOLE macro. For holes, the logical size, level, 30343466aaeSMax Grossman * DMU object type, and birth times are all also stored for holes that 30443466aaeSMax Grossman * were written to at some point (i.e. were punched after having been filled). 30543466aaeSMax Grossman */ 306b24ab676SJeff Bonwick typedef struct blkptr { 307b24ab676SJeff Bonwick dva_t blk_dva[SPA_DVAS_PER_BP]; /* Data Virtual Addresses */ 308b24ab676SJeff Bonwick uint64_t blk_prop; /* size, compression, type, etc */ 309b24ab676SJeff Bonwick uint64_t blk_pad[2]; /* Extra space for the future */ 310b24ab676SJeff Bonwick uint64_t blk_phys_birth; /* txg when block was allocated */ 311b24ab676SJeff Bonwick uint64_t blk_birth; /* transaction group at birth */ 312b24ab676SJeff Bonwick uint64_t blk_fill; /* fill count */ 313b24ab676SJeff Bonwick zio_cksum_t blk_cksum; /* 256-bit checksum */ 314b24ab676SJeff Bonwick } blkptr_t; 315b24ab676SJeff Bonwick 316fa9e4066Sahrens /* 317fa9e4066Sahrens * Macros to get and set fields in a bp or DVA. 318fa9e4066Sahrens */ 319fa9e4066Sahrens #define DVA_GET_ASIZE(dva) \ 32043466aaeSMax Grossman BF64_GET_SB((dva)->dva_word[0], 0, SPA_ASIZEBITS, SPA_MINBLOCKSHIFT, 0) 321fa9e4066Sahrens #define DVA_SET_ASIZE(dva, x) \ 32243466aaeSMax Grossman BF64_SET_SB((dva)->dva_word[0], 0, SPA_ASIZEBITS, \ 32343466aaeSMax Grossman SPA_MINBLOCKSHIFT, 0, x) 324fa9e4066Sahrens 325fa9e4066Sahrens #define DVA_GET_GRID(dva) BF64_GET((dva)->dva_word[0], 24, 8) 326fa9e4066Sahrens #define DVA_SET_GRID(dva, x) BF64_SET((dva)->dva_word[0], 24, 8, x) 327fa9e4066Sahrens 328fa9e4066Sahrens #define DVA_GET_VDEV(dva) BF64_GET((dva)->dva_word[0], 32, 32) 329fa9e4066Sahrens #define DVA_SET_VDEV(dva, x) BF64_SET((dva)->dva_word[0], 32, 32, x) 330fa9e4066Sahrens 331fa9e4066Sahrens #define DVA_GET_OFFSET(dva) \ 332fa9e4066Sahrens BF64_GET_SB((dva)->dva_word[1], 0, 63, SPA_MINBLOCKSHIFT, 0) 333fa9e4066Sahrens #define DVA_SET_OFFSET(dva, x) \ 334fa9e4066Sahrens BF64_SET_SB((dva)->dva_word[1], 0, 63, SPA_MINBLOCKSHIFT, 0, x) 335fa9e4066Sahrens 336fa9e4066Sahrens #define DVA_GET_GANG(dva) BF64_GET((dva)->dva_word[1], 63, 1) 337fa9e4066Sahrens #define DVA_SET_GANG(dva, x) BF64_SET((dva)->dva_word[1], 63, 1, x) 338fa9e4066Sahrens 339fa9e4066Sahrens #define BP_GET_LSIZE(bp) \ 340*5d7b4d43SMatthew Ahrens (BP_IS_EMBEDDED(bp) ? \ 341*5d7b4d43SMatthew Ahrens (BPE_GET_ETYPE(bp) == BP_EMBEDDED_TYPE_DATA ? BPE_GET_LSIZE(bp) : 0): \ 342*5d7b4d43SMatthew Ahrens BF64_GET_SB((bp)->blk_prop, 0, SPA_LSIZEBITS, SPA_MINBLOCKSHIFT, 1)) 343*5d7b4d43SMatthew Ahrens #define BP_SET_LSIZE(bp, x) do { \ 344*5d7b4d43SMatthew Ahrens ASSERT(!BP_IS_EMBEDDED(bp)); \ 345*5d7b4d43SMatthew Ahrens BF64_SET_SB((bp)->blk_prop, \ 346*5d7b4d43SMatthew Ahrens 0, SPA_LSIZEBITS, SPA_MINBLOCKSHIFT, 1, x); \ 347*5d7b4d43SMatthew Ahrens _NOTE(CONSTCOND) } while (0) 348fa9e4066Sahrens 349fa9e4066Sahrens #define BP_GET_PSIZE(bp) \ 350*5d7b4d43SMatthew Ahrens (BP_IS_EMBEDDED(bp) ? 0 : \ 351*5d7b4d43SMatthew Ahrens BF64_GET_SB((bp)->blk_prop, 16, SPA_PSIZEBITS, SPA_MINBLOCKSHIFT, 1)) 352*5d7b4d43SMatthew Ahrens #define BP_SET_PSIZE(bp, x) do { \ 353*5d7b4d43SMatthew Ahrens ASSERT(!BP_IS_EMBEDDED(bp)); \ 354*5d7b4d43SMatthew Ahrens BF64_SET_SB((bp)->blk_prop, \ 355*5d7b4d43SMatthew Ahrens 16, SPA_PSIZEBITS, SPA_MINBLOCKSHIFT, 1, x); \ 356*5d7b4d43SMatthew Ahrens _NOTE(CONSTCOND) } while (0) 357*5d7b4d43SMatthew Ahrens 358*5d7b4d43SMatthew Ahrens #define BP_GET_COMPRESS(bp) BF64_GET((bp)->blk_prop, 32, 7) 359*5d7b4d43SMatthew Ahrens #define BP_SET_COMPRESS(bp, x) BF64_SET((bp)->blk_prop, 32, 7, x) 360fa9e4066Sahrens 361*5d7b4d43SMatthew Ahrens #define BP_IS_EMBEDDED(bp) BF64_GET((bp)->blk_prop, 39, 1) 362*5d7b4d43SMatthew Ahrens #define BP_SET_EMBEDDED(bp, x) BF64_SET((bp)->blk_prop, 39, 1, x) 363b24ab676SJeff Bonwick 364*5d7b4d43SMatthew Ahrens #define BP_GET_CHECKSUM(bp) \ 365*5d7b4d43SMatthew Ahrens (BP_IS_EMBEDDED(bp) ? ZIO_CHECKSUM_OFF : \ 366*5d7b4d43SMatthew Ahrens BF64_GET((bp)->blk_prop, 40, 8)) 367*5d7b4d43SMatthew Ahrens #define BP_SET_CHECKSUM(bp, x) do { \ 368*5d7b4d43SMatthew Ahrens ASSERT(!BP_IS_EMBEDDED(bp)); \ 369*5d7b4d43SMatthew Ahrens BF64_SET((bp)->blk_prop, 40, 8, x); \ 370*5d7b4d43SMatthew Ahrens _NOTE(CONSTCOND) } while (0) 371b24ab676SJeff Bonwick 372b24ab676SJeff Bonwick #define BP_GET_TYPE(bp) BF64_GET((bp)->blk_prop, 48, 8) 373b24ab676SJeff Bonwick #define BP_SET_TYPE(bp, x) BF64_SET((bp)->blk_prop, 48, 8, x) 374fa9e4066Sahrens 375b24ab676SJeff Bonwick #define BP_GET_LEVEL(bp) BF64_GET((bp)->blk_prop, 56, 5) 376b24ab676SJeff Bonwick #define BP_SET_LEVEL(bp, x) BF64_SET((bp)->blk_prop, 56, 5, x) 377fa9e4066Sahrens 378b24ab676SJeff Bonwick #define BP_GET_DEDUP(bp) BF64_GET((bp)->blk_prop, 62, 1) 379b24ab676SJeff Bonwick #define BP_SET_DEDUP(bp, x) BF64_SET((bp)->blk_prop, 62, 1, x) 380fa9e4066Sahrens 38143466aaeSMax Grossman #define BP_GET_BYTEORDER(bp) BF64_GET((bp)->blk_prop, 63, 1) 382b24ab676SJeff Bonwick #define BP_SET_BYTEORDER(bp, x) BF64_SET((bp)->blk_prop, 63, 1, x) 383b24ab676SJeff Bonwick 384b24ab676SJeff Bonwick #define BP_PHYSICAL_BIRTH(bp) \ 385*5d7b4d43SMatthew Ahrens (BP_IS_EMBEDDED(bp) ? 0 : \ 386*5d7b4d43SMatthew Ahrens (bp)->blk_phys_birth ? (bp)->blk_phys_birth : (bp)->blk_birth) 387b24ab676SJeff Bonwick 388b24ab676SJeff Bonwick #define BP_SET_BIRTH(bp, logical, physical) \ 389b24ab676SJeff Bonwick { \ 390*5d7b4d43SMatthew Ahrens ASSERT(!BP_IS_EMBEDDED(bp)); \ 391b24ab676SJeff Bonwick (bp)->blk_birth = (logical); \ 392b24ab676SJeff Bonwick (bp)->blk_phys_birth = ((logical) == (physical) ? 0 : (physical)); \ 393b24ab676SJeff Bonwick } 394fa9e4066Sahrens 395*5d7b4d43SMatthew Ahrens #define BP_GET_FILL(bp) (BP_IS_EMBEDDED(bp) ? 1 : (bp)->blk_fill) 396*5d7b4d43SMatthew Ahrens 397fa9e4066Sahrens #define BP_GET_ASIZE(bp) \ 398*5d7b4d43SMatthew Ahrens (BP_IS_EMBEDDED(bp) ? 0 : \ 399*5d7b4d43SMatthew Ahrens DVA_GET_ASIZE(&(bp)->blk_dva[0]) + \ 400*5d7b4d43SMatthew Ahrens DVA_GET_ASIZE(&(bp)->blk_dva[1]) + \ 401*5d7b4d43SMatthew Ahrens DVA_GET_ASIZE(&(bp)->blk_dva[2])) 40299653d4eSeschrock 40399653d4eSeschrock #define BP_GET_UCSIZE(bp) \ 404ad135b5dSChristopher Siden ((BP_GET_LEVEL(bp) > 0 || DMU_OT_IS_METADATA(BP_GET_TYPE(bp))) ? \ 4053f9d6ad7SLin Ling BP_GET_PSIZE(bp) : BP_GET_LSIZE(bp)) 406fa9e4066Sahrens 40744cd46caSbillm #define BP_GET_NDVAS(bp) \ 408*5d7b4d43SMatthew Ahrens (BP_IS_EMBEDDED(bp) ? 0 : \ 409*5d7b4d43SMatthew Ahrens !!DVA_GET_ASIZE(&(bp)->blk_dva[0]) + \ 41044cd46caSbillm !!DVA_GET_ASIZE(&(bp)->blk_dva[1]) + \ 41144cd46caSbillm !!DVA_GET_ASIZE(&(bp)->blk_dva[2])) 41244cd46caSbillm 41344cd46caSbillm #define BP_COUNT_GANG(bp) \ 414*5d7b4d43SMatthew Ahrens (BP_IS_EMBEDDED(bp) ? 0 : \ 41544cd46caSbillm (DVA_GET_GANG(&(bp)->blk_dva[0]) + \ 41644cd46caSbillm DVA_GET_GANG(&(bp)->blk_dva[1]) + \ 417*5d7b4d43SMatthew Ahrens DVA_GET_GANG(&(bp)->blk_dva[2]))) 41844cd46caSbillm 419fa9e4066Sahrens #define DVA_EQUAL(dva1, dva2) \ 420fa9e4066Sahrens ((dva1)->dva_word[1] == (dva2)->dva_word[1] && \ 421fa9e4066Sahrens (dva1)->dva_word[0] == (dva2)->dva_word[0]) 422fa9e4066Sahrens 423b24ab676SJeff Bonwick #define BP_EQUAL(bp1, bp2) \ 424b24ab676SJeff Bonwick (BP_PHYSICAL_BIRTH(bp1) == BP_PHYSICAL_BIRTH(bp2) && \ 425*5d7b4d43SMatthew Ahrens (bp1)->blk_birth == (bp2)->blk_birth && \ 426b24ab676SJeff Bonwick DVA_EQUAL(&(bp1)->blk_dva[0], &(bp2)->blk_dva[0]) && \ 427b24ab676SJeff Bonwick DVA_EQUAL(&(bp1)->blk_dva[1], &(bp2)->blk_dva[1]) && \ 428b24ab676SJeff Bonwick DVA_EQUAL(&(bp1)->blk_dva[2], &(bp2)->blk_dva[2])) 429b24ab676SJeff Bonwick 4306b4acc8bSahrens #define ZIO_CHECKSUM_EQUAL(zc1, zc2) \ 4316b4acc8bSahrens (0 == (((zc1).zc_word[0] - (zc2).zc_word[0]) | \ 4326b4acc8bSahrens ((zc1).zc_word[1] - (zc2).zc_word[1]) | \ 4336b4acc8bSahrens ((zc1).zc_word[2] - (zc2).zc_word[2]) | \ 4346b4acc8bSahrens ((zc1).zc_word[3] - (zc2).zc_word[3]))) 4356b4acc8bSahrens 436fa9e4066Sahrens #define DVA_IS_VALID(dva) (DVA_GET_ASIZE(dva) != 0) 437fa9e4066Sahrens 438fa9e4066Sahrens #define ZIO_SET_CHECKSUM(zcp, w0, w1, w2, w3) \ 439fa9e4066Sahrens { \ 440fa9e4066Sahrens (zcp)->zc_word[0] = w0; \ 441fa9e4066Sahrens (zcp)->zc_word[1] = w1; \ 442fa9e4066Sahrens (zcp)->zc_word[2] = w2; \ 443fa9e4066Sahrens (zcp)->zc_word[3] = w3; \ 444fa9e4066Sahrens } 445fa9e4066Sahrens 446*5d7b4d43SMatthew Ahrens #define BP_IDENTITY(bp) (ASSERT(!BP_IS_EMBEDDED(bp)), &(bp)->blk_dva[0]) 447*5d7b4d43SMatthew Ahrens #define BP_IS_GANG(bp) \ 448*5d7b4d43SMatthew Ahrens (BP_IS_EMBEDDED(bp) ? B_FALSE : DVA_GET_GANG(BP_IDENTITY(bp))) 44943466aaeSMax Grossman #define DVA_IS_EMPTY(dva) ((dva)->dva_word[0] == 0ULL && \ 45043466aaeSMax Grossman (dva)->dva_word[1] == 0ULL) 451*5d7b4d43SMatthew Ahrens #define BP_IS_HOLE(bp) \ 452*5d7b4d43SMatthew Ahrens (!BP_IS_EMBEDDED(bp) && DVA_IS_EMPTY(BP_IDENTITY(bp))) 453fa9e4066Sahrens 4546e1f5caaSNeil Perrin /* BP_IS_RAIDZ(bp) assumes no block compression */ 4556e1f5caaSNeil Perrin #define BP_IS_RAIDZ(bp) (DVA_GET_ASIZE(&(bp)->blk_dva[0]) > \ 4566e1f5caaSNeil Perrin BP_GET_PSIZE(bp)) 4576e1f5caaSNeil Perrin 458e14bb325SJeff Bonwick #define BP_ZERO(bp) \ 459fa9e4066Sahrens { \ 460fa9e4066Sahrens (bp)->blk_dva[0].dva_word[0] = 0; \ 461fa9e4066Sahrens (bp)->blk_dva[0].dva_word[1] = 0; \ 462fa9e4066Sahrens (bp)->blk_dva[1].dva_word[0] = 0; \ 463fa9e4066Sahrens (bp)->blk_dva[1].dva_word[1] = 0; \ 464fa9e4066Sahrens (bp)->blk_dva[2].dva_word[0] = 0; \ 465fa9e4066Sahrens (bp)->blk_dva[2].dva_word[1] = 0; \ 466fa9e4066Sahrens (bp)->blk_prop = 0; \ 467fa9e4066Sahrens (bp)->blk_pad[0] = 0; \ 468fa9e4066Sahrens (bp)->blk_pad[1] = 0; \ 469b24ab676SJeff Bonwick (bp)->blk_phys_birth = 0; \ 470e14bb325SJeff Bonwick (bp)->blk_birth = 0; \ 471fa9e4066Sahrens (bp)->blk_fill = 0; \ 472fa9e4066Sahrens ZIO_SET_CHECKSUM(&(bp)->blk_cksum, 0, 0, 0, 0); \ 473fa9e4066Sahrens } 474fa9e4066Sahrens 475fa9e4066Sahrens #ifdef _BIG_ENDIAN 476fa9e4066Sahrens #define ZFS_HOST_BYTEORDER (0ULL) 477fa9e4066Sahrens #else 47843466aaeSMax Grossman #define ZFS_HOST_BYTEORDER (1ULL) 479fa9e4066Sahrens #endif 480fa9e4066Sahrens 481fa9e4066Sahrens #define BP_SHOULD_BYTESWAP(bp) (BP_GET_BYTEORDER(bp) != ZFS_HOST_BYTEORDER) 482fa9e4066Sahrens 48344cd46caSbillm #define BP_SPRINTF_LEN 320 484fbabab8fSmaybee 485b24ab676SJeff Bonwick /* 486b24ab676SJeff Bonwick * This macro allows code sharing between zfs, libzpool, and mdb. 487b24ab676SJeff Bonwick * 'func' is either snprintf() or mdb_snprintf(). 488b24ab676SJeff Bonwick * 'ws' (whitespace) can be ' ' for single-line format, '\n' for multi-line. 489b24ab676SJeff Bonwick */ 49043466aaeSMax Grossman #define SNPRINTF_BLKPTR(func, ws, buf, size, bp, type, checksum, compress) \ 491b24ab676SJeff Bonwick { \ 492b24ab676SJeff Bonwick static const char *copyname[] = \ 493b24ab676SJeff Bonwick { "zero", "single", "double", "triple" }; \ 494b24ab676SJeff Bonwick int len = 0; \ 495b24ab676SJeff Bonwick int copies = 0; \ 496b24ab676SJeff Bonwick \ 497b24ab676SJeff Bonwick if (bp == NULL) { \ 49843466aaeSMax Grossman len += func(buf + len, size - len, "<NULL>"); \ 499b24ab676SJeff Bonwick } else if (BP_IS_HOLE(bp)) { \ 50043466aaeSMax Grossman len += func(buf + len, size - len, "<hole>"); \ 50143466aaeSMax Grossman if (bp->blk_birth > 0) { \ 50243466aaeSMax Grossman len += func(buf + len, size - len, \ 50343466aaeSMax Grossman " birth=%lluL", \ 50443466aaeSMax Grossman (u_longlong_t)bp->blk_birth); \ 50543466aaeSMax Grossman } \ 506*5d7b4d43SMatthew Ahrens } else if (BP_IS_EMBEDDED(bp)) { \ 507*5d7b4d43SMatthew Ahrens len = func(buf + len, size - len, \ 508*5d7b4d43SMatthew Ahrens "EMBEDDED [L%llu %s] et=%u %s " \ 509*5d7b4d43SMatthew Ahrens "size=%llxL/%llxP birth=%lluL", \ 510*5d7b4d43SMatthew Ahrens (u_longlong_t)BP_GET_LEVEL(bp), \ 511*5d7b4d43SMatthew Ahrens type, \ 512*5d7b4d43SMatthew Ahrens (int)BPE_GET_ETYPE(bp), \ 513*5d7b4d43SMatthew Ahrens compress, \ 514*5d7b4d43SMatthew Ahrens (u_longlong_t)BPE_GET_LSIZE(bp), \ 515*5d7b4d43SMatthew Ahrens (u_longlong_t)BPE_GET_PSIZE(bp), \ 516*5d7b4d43SMatthew Ahrens (u_longlong_t)bp->blk_birth); \ 517b24ab676SJeff Bonwick } else { \ 518b24ab676SJeff Bonwick for (int d = 0; d < BP_GET_NDVAS(bp); d++) { \ 519b24ab676SJeff Bonwick const dva_t *dva = &bp->blk_dva[d]; \ 520b24ab676SJeff Bonwick if (DVA_IS_VALID(dva)) \ 521b24ab676SJeff Bonwick copies++; \ 522b24ab676SJeff Bonwick len += func(buf + len, size - len, \ 523b24ab676SJeff Bonwick "DVA[%d]=<%llu:%llx:%llx>%c", d, \ 524b24ab676SJeff Bonwick (u_longlong_t)DVA_GET_VDEV(dva), \ 525b24ab676SJeff Bonwick (u_longlong_t)DVA_GET_OFFSET(dva), \ 526b24ab676SJeff Bonwick (u_longlong_t)DVA_GET_ASIZE(dva), \ 527b24ab676SJeff Bonwick ws); \ 528b24ab676SJeff Bonwick } \ 529b24ab676SJeff Bonwick if (BP_IS_GANG(bp) && \ 530b24ab676SJeff Bonwick DVA_GET_ASIZE(&bp->blk_dva[2]) <= \ 531b24ab676SJeff Bonwick DVA_GET_ASIZE(&bp->blk_dva[1]) / 2) \ 532b24ab676SJeff Bonwick copies--; \ 533b24ab676SJeff Bonwick len += func(buf + len, size - len, \ 534b24ab676SJeff Bonwick "[L%llu %s] %s %s %s %s %s %s%c" \ 535b24ab676SJeff Bonwick "size=%llxL/%llxP birth=%lluL/%lluP fill=%llu%c" \ 536b24ab676SJeff Bonwick "cksum=%llx:%llx:%llx:%llx", \ 537b24ab676SJeff Bonwick (u_longlong_t)BP_GET_LEVEL(bp), \ 538b24ab676SJeff Bonwick type, \ 539b24ab676SJeff Bonwick checksum, \ 540b24ab676SJeff Bonwick compress, \ 541b24ab676SJeff Bonwick BP_GET_BYTEORDER(bp) == 0 ? "BE" : "LE", \ 542b24ab676SJeff Bonwick BP_IS_GANG(bp) ? "gang" : "contiguous", \ 543b24ab676SJeff Bonwick BP_GET_DEDUP(bp) ? "dedup" : "unique", \ 544b24ab676SJeff Bonwick copyname[copies], \ 545b24ab676SJeff Bonwick ws, \ 546b24ab676SJeff Bonwick (u_longlong_t)BP_GET_LSIZE(bp), \ 547b24ab676SJeff Bonwick (u_longlong_t)BP_GET_PSIZE(bp), \ 548b24ab676SJeff Bonwick (u_longlong_t)bp->blk_birth, \ 549b24ab676SJeff Bonwick (u_longlong_t)BP_PHYSICAL_BIRTH(bp), \ 550*5d7b4d43SMatthew Ahrens (u_longlong_t)BP_GET_FILL(bp), \ 551b24ab676SJeff Bonwick ws, \ 552b24ab676SJeff Bonwick (u_longlong_t)bp->blk_cksum.zc_word[0], \ 553b24ab676SJeff Bonwick (u_longlong_t)bp->blk_cksum.zc_word[1], \ 554b24ab676SJeff Bonwick (u_longlong_t)bp->blk_cksum.zc_word[2], \ 555b24ab676SJeff Bonwick (u_longlong_t)bp->blk_cksum.zc_word[3]); \ 556b24ab676SJeff Bonwick } \ 557b24ab676SJeff Bonwick ASSERT(len < size); \ 558b24ab676SJeff Bonwick } 559b24ab676SJeff Bonwick 560fa9e4066Sahrens #include <sys/dmu.h> 561fa9e4066Sahrens 562ad23a2dbSjohansen #define BP_GET_BUFC_TYPE(bp) \ 563ad135b5dSChristopher Siden (((BP_GET_LEVEL(bp) > 0) || (DMU_OT_IS_METADATA(BP_GET_TYPE(bp)))) ? \ 564ad135b5dSChristopher Siden ARC_BUFC_METADATA : ARC_BUFC_DATA) 565fa9e4066Sahrens 5661195e687SMark J Musante typedef enum spa_import_type { 5671195e687SMark J Musante SPA_IMPORT_EXISTING, 5681195e687SMark J Musante SPA_IMPORT_ASSEMBLE 5691195e687SMark J Musante } spa_import_type_t; 5701195e687SMark J Musante 571fa9e4066Sahrens /* state manipulation functions */ 572fa9e4066Sahrens extern int spa_open(const char *pool, spa_t **, void *tag); 573468c413aSTim Haley extern int spa_open_rewind(const char *pool, spa_t **, void *tag, 574468c413aSTim Haley nvlist_t *policy, nvlist_t **config); 575ad135b5dSChristopher Siden extern int spa_get_stats(const char *pool, nvlist_t **config, char *altroot, 576ad135b5dSChristopher Siden size_t buflen); 577990b4856Slling extern int spa_create(const char *pool, nvlist_t *config, nvlist_t *props, 5784445fffbSMatthew Ahrens nvlist_t *zplprops); 579051aabe6Staylor extern int spa_import_rootpool(char *devpath, char *devid); 5804b964adaSGeorge Wilson extern int spa_import(const char *pool, nvlist_t *config, nvlist_t *props, 5814b964adaSGeorge Wilson uint64_t flags); 582fa9e4066Sahrens extern nvlist_t *spa_tryimport(nvlist_t *tryconfig); 583fa9e4066Sahrens extern int spa_destroy(char *pool); 584394ab0cbSGeorge Wilson extern int spa_export(char *pool, nvlist_t **oldconfig, boolean_t force, 585394ab0cbSGeorge Wilson boolean_t hardforce); 586ea8dc4b6Seschrock extern int spa_reset(char *pool); 587ea8dc4b6Seschrock extern void spa_async_request(spa_t *spa, int flag); 588088f3894Sahrens extern void spa_async_unrequest(spa_t *spa, int flag); 589ea8dc4b6Seschrock extern void spa_async_suspend(spa_t *spa); 590ea8dc4b6Seschrock extern void spa_async_resume(spa_t *spa); 591ea8dc4b6Seschrock extern spa_t *spa_inject_addref(char *pool); 592ea8dc4b6Seschrock extern void spa_inject_delref(spa_t *spa); 5933f9d6ad7SLin Ling extern void spa_scan_stat_init(spa_t *spa); 5943f9d6ad7SLin Ling extern int spa_scan_get_stats(spa_t *spa, pool_scan_stat_t *ps); 595ea8dc4b6Seschrock 596e14bb325SJeff Bonwick #define SPA_ASYNC_CONFIG_UPDATE 0x01 597e14bb325SJeff Bonwick #define SPA_ASYNC_REMOVE 0x02 598e14bb325SJeff Bonwick #define SPA_ASYNC_PROBE 0x04 599e14bb325SJeff Bonwick #define SPA_ASYNC_RESILVER_DONE 0x08 600e14bb325SJeff Bonwick #define SPA_ASYNC_RESILVER 0x10 601573ca77eSGeorge Wilson #define SPA_ASYNC_AUTOEXPAND 0x20 6023f9d6ad7SLin Ling #define SPA_ASYNC_REMOVE_DONE 0x40 6033f9d6ad7SLin Ling #define SPA_ASYNC_REMOVE_STOP 0x80 6043f9d6ad7SLin Ling 6053f9d6ad7SLin Ling /* 6063f9d6ad7SLin Ling * Controls the behavior of spa_vdev_remove(). 6073f9d6ad7SLin Ling */ 6083f9d6ad7SLin Ling #define SPA_REMOVE_UNSPARE 0x01 6093f9d6ad7SLin Ling #define SPA_REMOVE_DONE 0x02 610fa9e4066Sahrens 611fa9e4066Sahrens /* device manipulation */ 612fa9e4066Sahrens extern int spa_vdev_add(spa_t *spa, nvlist_t *nvroot); 613ea8dc4b6Seschrock extern int spa_vdev_attach(spa_t *spa, uint64_t guid, nvlist_t *nvroot, 614fa9e4066Sahrens int replacing); 6158ad4d6ddSJeff Bonwick extern int spa_vdev_detach(spa_t *spa, uint64_t guid, uint64_t pguid, 6168ad4d6ddSJeff Bonwick int replace_done); 61799653d4eSeschrock extern int spa_vdev_remove(spa_t *spa, uint64_t guid, boolean_t unspare); 6183f9d6ad7SLin Ling extern boolean_t spa_vdev_remove_active(spa_t *spa); 619c67d9675Seschrock extern int spa_vdev_setpath(spa_t *spa, uint64_t guid, const char *newpath); 6206809eb4eSEric Schrock extern int spa_vdev_setfru(spa_t *spa, uint64_t guid, const char *newfru); 6211195e687SMark J Musante extern int spa_vdev_split_mirror(spa_t *spa, char *newname, nvlist_t *config, 6221195e687SMark J Musante nvlist_t *props, boolean_t exp); 623fa9e4066Sahrens 62499653d4eSeschrock /* spare state (which is global across all pools) */ 62539c23413Seschrock extern void spa_spare_add(vdev_t *vd); 62639c23413Seschrock extern void spa_spare_remove(vdev_t *vd); 62789a89ebfSlling extern boolean_t spa_spare_exists(uint64_t guid, uint64_t *pool, int *refcnt); 62839c23413Seschrock extern void spa_spare_activate(vdev_t *vd); 62999653d4eSeschrock 630fa94a07fSbrendan /* L2ARC state (which is global across all pools) */ 631fa94a07fSbrendan extern void spa_l2cache_add(vdev_t *vd); 632fa94a07fSbrendan extern void spa_l2cache_remove(vdev_t *vd); 633fa94a07fSbrendan extern boolean_t spa_l2cache_exists(uint64_t guid, uint64_t *pool); 634fa94a07fSbrendan extern void spa_l2cache_activate(vdev_t *vd); 635fa94a07fSbrendan extern void spa_l2cache_drop(spa_t *spa); 636fa94a07fSbrendan 6373f9d6ad7SLin Ling /* scanning */ 6383f9d6ad7SLin Ling extern int spa_scan(spa_t *spa, pool_scan_func_t func); 6393f9d6ad7SLin Ling extern int spa_scan_stop(spa_t *spa); 640fa9e4066Sahrens 641fa9e4066Sahrens /* spa syncing */ 642fa9e4066Sahrens extern void spa_sync(spa_t *spa, uint64_t txg); /* only for DMU use */ 643fa9e4066Sahrens extern void spa_sync_allpools(void); 644fa9e4066Sahrens 6453a737e0dSbrendan /* spa namespace global mutex */ 6463a737e0dSbrendan extern kmutex_t spa_namespace_lock; 6473a737e0dSbrendan 648fa9e4066Sahrens /* 649fa9e4066Sahrens * SPA configuration functions in spa_config.c 650fa9e4066Sahrens */ 6510373e76bSbonwick 6520373e76bSbonwick #define SPA_CONFIG_UPDATE_POOL 0 6530373e76bSbonwick #define SPA_CONFIG_UPDATE_VDEVS 1 6540373e76bSbonwick 655c5904d13Seschrock extern void spa_config_sync(spa_t *, boolean_t, boolean_t); 656fa9e4066Sahrens extern void spa_config_load(void); 657fa9e4066Sahrens extern nvlist_t *spa_all_configs(uint64_t *); 658fa9e4066Sahrens extern void spa_config_set(spa_t *spa, nvlist_t *config); 659fa9e4066Sahrens extern nvlist_t *spa_config_generate(spa_t *spa, vdev_t *vd, uint64_t txg, 660fa9e4066Sahrens int getstats); 6610373e76bSbonwick extern void spa_config_update(spa_t *spa, int what); 662fa9e4066Sahrens 663fa9e4066Sahrens /* 664fa9e4066Sahrens * Miscellaneous SPA routines in spa_misc.c 665fa9e4066Sahrens */ 666fa9e4066Sahrens 667fa9e4066Sahrens /* Namespace manipulation */ 668fa9e4066Sahrens extern spa_t *spa_lookup(const char *name); 669468c413aSTim Haley extern spa_t *spa_add(const char *name, nvlist_t *config, const char *altroot); 670fa9e4066Sahrens extern void spa_remove(spa_t *spa); 671fa9e4066Sahrens extern spa_t *spa_next(spa_t *prev); 672fa9e4066Sahrens 673fa9e4066Sahrens /* Refcount functions */ 674fa9e4066Sahrens extern void spa_open_ref(spa_t *spa, void *tag); 675fa9e4066Sahrens extern void spa_close(spa_t *spa, void *tag); 676fa9e4066Sahrens extern boolean_t spa_refcount_zero(spa_t *spa); 677fa9e4066Sahrens 6788f18d1faSGeorge Wilson #define SCL_NONE 0x00 679e14bb325SJeff Bonwick #define SCL_CONFIG 0x01 680e14bb325SJeff Bonwick #define SCL_STATE 0x02 681e14bb325SJeff Bonwick #define SCL_L2ARC 0x04 /* hack until L2ARC 2.0 */ 682e14bb325SJeff Bonwick #define SCL_ALLOC 0x08 683e14bb325SJeff Bonwick #define SCL_ZIO 0x10 684e14bb325SJeff Bonwick #define SCL_FREE 0x20 685e14bb325SJeff Bonwick #define SCL_VDEV 0x40 686e14bb325SJeff Bonwick #define SCL_LOCKS 7 687e14bb325SJeff Bonwick #define SCL_ALL ((1 << SCL_LOCKS) - 1) 688e14bb325SJeff Bonwick #define SCL_STATE_ALL (SCL_STATE | SCL_L2ARC | SCL_ZIO) 689e14bb325SJeff Bonwick 690e14bb325SJeff Bonwick /* Pool configuration locks */ 691e14bb325SJeff Bonwick extern int spa_config_tryenter(spa_t *spa, int locks, void *tag, krw_t rw); 692e14bb325SJeff Bonwick extern void spa_config_enter(spa_t *spa, int locks, void *tag, krw_t rw); 693e14bb325SJeff Bonwick extern void spa_config_exit(spa_t *spa, int locks, void *tag); 694e14bb325SJeff Bonwick extern int spa_config_held(spa_t *spa, int locks, krw_t rw); 695fa9e4066Sahrens 696fa9e4066Sahrens /* Pool vdev add/remove lock */ 697fa9e4066Sahrens extern uint64_t spa_vdev_enter(spa_t *spa); 69888ecc943SGeorge Wilson extern uint64_t spa_vdev_config_enter(spa_t *spa); 69988ecc943SGeorge Wilson extern void spa_vdev_config_exit(spa_t *spa, vdev_t *vd, uint64_t txg, 70088ecc943SGeorge Wilson int error, char *tag); 701fa9e4066Sahrens extern int spa_vdev_exit(spa_t *spa, vdev_t *vd, uint64_t txg, int error); 702fa9e4066Sahrens 703e14bb325SJeff Bonwick /* Pool vdev state change lock */ 7048f18d1faSGeorge Wilson extern void spa_vdev_state_enter(spa_t *spa, int oplock); 705e14bb325SJeff Bonwick extern int spa_vdev_state_exit(spa_t *spa, vdev_t *vd, int error); 706e14bb325SJeff Bonwick 707b24ab676SJeff Bonwick /* Log state */ 708b24ab676SJeff Bonwick typedef enum spa_log_state { 709b24ab676SJeff Bonwick SPA_LOG_UNKNOWN = 0, /* unknown log state */ 710b24ab676SJeff Bonwick SPA_LOG_MISSING, /* missing log(s) */ 711b24ab676SJeff Bonwick SPA_LOG_CLEAR, /* clear the log(s) */ 712b24ab676SJeff Bonwick SPA_LOG_GOOD, /* log(s) are good */ 713b24ab676SJeff Bonwick } spa_log_state_t; 714b24ab676SJeff Bonwick 715b24ab676SJeff Bonwick extern spa_log_state_t spa_get_log_state(spa_t *spa); 716b24ab676SJeff Bonwick extern void spa_set_log_state(spa_t *spa, spa_log_state_t state); 7171195e687SMark J Musante extern int spa_offline_log(spa_t *spa); 718b24ab676SJeff Bonwick 719b24ab676SJeff Bonwick /* Log claim callback */ 720b24ab676SJeff Bonwick extern void spa_claim_notify(zio_t *zio); 721b24ab676SJeff Bonwick 722fa9e4066Sahrens /* Accessor functions */ 72388b7b0f2SMatthew Ahrens extern boolean_t spa_shutting_down(spa_t *spa); 724fa9e4066Sahrens extern struct dsl_pool *spa_get_dsl(spa_t *spa); 725ad135b5dSChristopher Siden extern boolean_t spa_is_initializing(spa_t *spa); 726fa9e4066Sahrens extern blkptr_t *spa_get_rootblkptr(spa_t *spa); 727fa9e4066Sahrens extern void spa_set_rootblkptr(spa_t *spa, const blkptr_t *bp); 728fa9e4066Sahrens extern void spa_altroot(spa_t *, char *, size_t); 729fa9e4066Sahrens extern int spa_sync_pass(spa_t *spa); 730fa9e4066Sahrens extern char *spa_name(spa_t *spa); 731fa9e4066Sahrens extern uint64_t spa_guid(spa_t *spa); 732e9103aaeSGarrett D'Amore extern uint64_t spa_load_guid(spa_t *spa); 733fa9e4066Sahrens extern uint64_t spa_last_synced_txg(spa_t *spa); 734fa9e4066Sahrens extern uint64_t spa_first_txg(spa_t *spa); 735b24ab676SJeff Bonwick extern uint64_t spa_syncing_txg(spa_t *spa); 73699653d4eSeschrock extern uint64_t spa_version(spa_t *spa); 73788b7b0f2SMatthew Ahrens extern pool_state_t spa_state(spa_t *spa); 738b16da2e2SGeorge Wilson extern spa_load_state_t spa_load_state(spa_t *spa); 739fa9e4066Sahrens extern uint64_t spa_freeze_txg(spa_t *spa); 740fa9e4066Sahrens extern uint64_t spa_get_asize(spa_t *spa, uint64_t lsize); 741485bbbf5SGeorge Wilson extern uint64_t spa_get_dspace(spa_t *spa); 742485bbbf5SGeorge Wilson extern void spa_update_dspace(spa_t *spa); 74344cd46caSbillm extern uint64_t spa_version(spa_t *spa); 744b24ab676SJeff Bonwick extern boolean_t spa_deflate(spa_t *spa); 745b24ab676SJeff Bonwick extern metaslab_class_t *spa_normal_class(spa_t *spa); 746b24ab676SJeff Bonwick extern metaslab_class_t *spa_log_class(spa_t *spa); 74744cd46caSbillm extern int spa_max_replication(spa_t *spa); 7483f9d6ad7SLin Ling extern int spa_prev_software_version(spa_t *spa); 749fa9e4066Sahrens extern int spa_busy(void); 7500a4e9518Sgw extern uint8_t spa_get_failmode(spa_t *spa); 751e14bb325SJeff Bonwick extern boolean_t spa_suspended(spa_t *spa); 752b24ab676SJeff Bonwick extern uint64_t spa_bootfs(spa_t *spa); 753b24ab676SJeff Bonwick extern uint64_t spa_delegation(spa_t *spa); 754b24ab676SJeff Bonwick extern objset_t *spa_meta_objset(spa_t *spa); 755283b8460SGeorge.Wilson extern uint64_t spa_deadman_synctime(spa_t *spa); 756fa9e4066Sahrens 757fa9e4066Sahrens /* Miscellaneous support routines */ 75843466aaeSMax Grossman extern void spa_activate_mos_feature(spa_t *spa, const char *feature, 75943466aaeSMax Grossman dmu_tx_t *tx); 760ad135b5dSChristopher Siden extern void spa_deactivate_mos_feature(spa_t *spa, const char *feature); 761fa9e4066Sahrens extern int spa_rename(const char *oldname, const char *newname); 762f9af39baSGeorge Wilson extern spa_t *spa_by_guid(uint64_t pool_guid, uint64_t device_guid); 763fa9e4066Sahrens extern boolean_t spa_guid_exists(uint64_t pool_guid, uint64_t device_guid); 764fa9e4066Sahrens extern char *spa_strdup(const char *); 765fa9e4066Sahrens extern void spa_strfree(char *); 766fa9e4066Sahrens extern uint64_t spa_get_random(uint64_t range); 7671195e687SMark J Musante extern uint64_t spa_generate_guid(spa_t *spa); 76843466aaeSMax Grossman extern void snprintf_blkptr(char *buf, size_t buflen, const blkptr_t *bp); 769fa9e4066Sahrens extern void spa_freeze(spa_t *spa); 770e9103aaeSGarrett D'Amore extern int spa_change_guid(spa_t *spa); 771990b4856Slling extern void spa_upgrade(spa_t *spa, uint64_t version); 772fa9e4066Sahrens extern void spa_evict_all(void); 773c5904d13Seschrock extern vdev_t *spa_lookup_by_guid(spa_t *spa, uint64_t guid, 774c5904d13Seschrock boolean_t l2cache); 77599653d4eSeschrock extern boolean_t spa_has_spare(spa_t *, uint64_t guid); 776b24ab676SJeff Bonwick extern uint64_t dva_get_dsize_sync(spa_t *spa, const dva_t *dva); 777b24ab676SJeff Bonwick extern uint64_t bp_get_dsize_sync(spa_t *spa, const blkptr_t *bp); 778b24ab676SJeff Bonwick extern uint64_t bp_get_dsize(spa_t *spa, const blkptr_t *bp); 7796ce0521aSperrin extern boolean_t spa_has_slogs(spa_t *spa); 780bf82a41bSeschrock extern boolean_t spa_is_root(spa_t *spa); 7818ad4d6ddSJeff Bonwick extern boolean_t spa_writeable(spa_t *spa); 782468c413aSTim Haley 7838ad4d6ddSJeff Bonwick extern int spa_mode(spa_t *spa); 784ca45db41SChris Kirby extern uint64_t strtonum(const char *str, char **nptr); 785ea8dc4b6Seschrock 786ecd6cf80Smarks extern char *spa_his_ievent_table[]; 787ecd6cf80Smarks 78806eeb2adSek extern void spa_history_create_obj(spa_t *spa, dmu_tx_t *tx); 78906eeb2adSek extern int spa_history_get(spa_t *spa, uint64_t *offset, uint64_t *len_read, 79006eeb2adSek char *his_buf); 7914445fffbSMatthew Ahrens extern int spa_history_log(spa_t *spa, const char *his_buf); 7924445fffbSMatthew Ahrens extern int spa_history_log_nvl(spa_t *spa, nvlist_t *nvl); 7934445fffbSMatthew Ahrens extern void spa_history_log_version(spa_t *spa, const char *operation); 7944445fffbSMatthew Ahrens extern void spa_history_log_internal(spa_t *spa, const char *operation, 7954445fffbSMatthew Ahrens dmu_tx_t *tx, const char *fmt, ...); 7964445fffbSMatthew Ahrens extern void spa_history_log_internal_ds(struct dsl_dataset *ds, const char *op, 7974445fffbSMatthew Ahrens dmu_tx_t *tx, const char *fmt, ...); 7984445fffbSMatthew Ahrens extern void spa_history_log_internal_dd(dsl_dir_t *dd, const char *operation, 7994445fffbSMatthew Ahrens dmu_tx_t *tx, const char *fmt, ...); 80006eeb2adSek 801ea8dc4b6Seschrock /* error handling */ 802ea8dc4b6Seschrock struct zbookmark; 803b24ab676SJeff Bonwick extern void spa_log_error(spa_t *spa, zio_t *zio); 804ea8dc4b6Seschrock extern void zfs_ereport_post(const char *class, spa_t *spa, vdev_t *vd, 805b24ab676SJeff Bonwick zio_t *zio, uint64_t stateoroffset, uint64_t length); 8063d7072f8Seschrock extern void zfs_post_remove(spa_t *spa, vdev_t *vd); 807069f55e2SEric Schrock extern void zfs_post_state_change(spa_t *spa, vdev_t *vd); 8083d7072f8Seschrock extern void zfs_post_autoreplace(spa_t *spa, vdev_t *vd); 809ea8dc4b6Seschrock extern uint64_t spa_get_errlog_size(spa_t *spa); 810ea8dc4b6Seschrock extern int spa_get_errlog(spa_t *spa, void *uaddr, size_t *count); 811ea8dc4b6Seschrock extern void spa_errlog_rotate(spa_t *spa); 812ea8dc4b6Seschrock extern void spa_errlog_drain(spa_t *spa); 813ea8dc4b6Seschrock extern void spa_errlog_sync(spa_t *spa, uint64_t txg); 814ea8dc4b6Seschrock extern void spa_get_errlists(spa_t *spa, avl_tree_t *last, avl_tree_t *scrub); 815fa9e4066Sahrens 81687db74c1Sek /* vdev cache */ 81787db74c1Sek extern void vdev_cache_stat_init(void); 81887db74c1Sek extern void vdev_cache_stat_fini(void); 81987db74c1Sek 820fa9e4066Sahrens /* Initialization and termination */ 821fa9e4066Sahrens extern void spa_init(int flags); 822fa9e4066Sahrens extern void spa_fini(void); 823e7cbe64fSgw extern void spa_boot_init(); 824fa9e4066Sahrens 825b1b8ab34Slling /* properties */ 826990b4856Slling extern int spa_prop_set(spa_t *spa, nvlist_t *nvp); 827990b4856Slling extern int spa_prop_get(spa_t *spa, nvlist_t **nvp); 828990b4856Slling extern void spa_prop_clear_bootfs(spa_t *spa, uint64_t obj, dmu_tx_t *tx); 829379c004dSEric Schrock extern void spa_configfile_set(spa_t *, nvlist_t *, boolean_t); 830b1b8ab34Slling 8313d7072f8Seschrock /* asynchronous event notification */ 8323d7072f8Seschrock extern void spa_event_notify(spa_t *spa, vdev_t *vdev, const char *name); 8333d7072f8Seschrock 834fa9e4066Sahrens #ifdef ZFS_DEBUG 835c0a81264Sek #define dprintf_bp(bp, fmt, ...) do { \ 83643466aaeSMax Grossman if (zfs_flags & ZFS_DEBUG_DPRINTF) { \ 837c0a81264Sek char *__blkbuf = kmem_alloc(BP_SPRINTF_LEN, KM_SLEEP); \ 83843466aaeSMax Grossman snprintf_blkptr(__blkbuf, BP_SPRINTF_LEN, (bp)); \ 839c0a81264Sek dprintf(fmt " %s\n", __VA_ARGS__, __blkbuf); \ 840c0a81264Sek kmem_free(__blkbuf, BP_SPRINTF_LEN); \ 841fa9e4066Sahrens } \ 842fa9e4066Sahrens _NOTE(CONSTCOND) } while (0) 843fa9e4066Sahrens #else 844fa9e4066Sahrens #define dprintf_bp(bp, fmt, ...) 845fa9e4066Sahrens #endif 846fa9e4066Sahrens 84709c9d376SGeorge Wilson extern boolean_t spa_debug_enabled(spa_t *spa); 84809c9d376SGeorge Wilson #define spa_dbgmsg(spa, ...) \ 84909c9d376SGeorge Wilson { \ 85009c9d376SGeorge Wilson if (spa_debug_enabled(spa)) \ 85109c9d376SGeorge Wilson zfs_dbgmsg(__VA_ARGS__); \ 85209c9d376SGeorge Wilson } 85309c9d376SGeorge Wilson 8548ad4d6ddSJeff Bonwick extern int spa_mode_global; /* mode, e.g. FREAD | FWRITE */ 855fa9e4066Sahrens 856fa9e4066Sahrens #ifdef __cplusplus 857fa9e4066Sahrens } 858fa9e4066Sahrens #endif 859fa9e4066Sahrens 860fa9e4066Sahrens #endif /* _SYS_SPA_H */ 861