1*199767f8SToomas Soome /*- 2*199767f8SToomas Soome * Copyright (c) 2002 McAfee, Inc. 3*199767f8SToomas Soome * All rights reserved. 4*199767f8SToomas Soome * 5*199767f8SToomas Soome * This software was developed for the FreeBSD Project by Marshall 6*199767f8SToomas Soome * Kirk McKusick and McAfee Research,, the Security Research Division of 7*199767f8SToomas Soome * McAfee, Inc. under DARPA/SPAWAR contract N66001-01-C-8035 ("CBOSS"), as 8*199767f8SToomas Soome * part of the DARPA CHATS research program 9*199767f8SToomas Soome * 10*199767f8SToomas Soome * Redistribution and use in source and binary forms, with or without 11*199767f8SToomas Soome * modification, are permitted provided that the following conditions 12*199767f8SToomas Soome * are met: 13*199767f8SToomas Soome * 1. Redistributions of source code must retain the above copyright 14*199767f8SToomas Soome * notice, this list of conditions and the following disclaimer. 15*199767f8SToomas Soome * 2. Redistributions in binary form must reproduce the above copyright 16*199767f8SToomas Soome * notice, this list of conditions and the following disclaimer in the 17*199767f8SToomas Soome * documentation and/or other materials provided with the distribution. 18*199767f8SToomas Soome * 19*199767f8SToomas Soome * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 20*199767f8SToomas Soome * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21*199767f8SToomas Soome * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22*199767f8SToomas Soome * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 23*199767f8SToomas Soome * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24*199767f8SToomas Soome * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25*199767f8SToomas Soome * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26*199767f8SToomas Soome * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27*199767f8SToomas Soome * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28*199767f8SToomas Soome * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29*199767f8SToomas Soome * SUCH DAMAGE. 30*199767f8SToomas Soome */ 31*199767f8SToomas Soome /* 32*199767f8SToomas Soome * CDDL HEADER START 33*199767f8SToomas Soome * 34*199767f8SToomas Soome * The contents of this file are subject to the terms of the 35*199767f8SToomas Soome * Common Development and Distribution License (the "License"). 36*199767f8SToomas Soome * You may not use this file except in compliance with the License. 37*199767f8SToomas Soome * 38*199767f8SToomas Soome * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 39*199767f8SToomas Soome * or http://www.opensolaris.org/os/licensing. 40*199767f8SToomas Soome * See the License for the specific language governing permissions 41*199767f8SToomas Soome * and limitations under the License. 42*199767f8SToomas Soome * 43*199767f8SToomas Soome * When distributing Covered Code, include this CDDL HEADER in each 44*199767f8SToomas Soome * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 45*199767f8SToomas Soome * If applicable, add the following below this CDDL HEADER, with the 46*199767f8SToomas Soome * fields enclosed by brackets "[]" replaced with your own identifying 47*199767f8SToomas Soome * information: Portions Copyright [yyyy] [name of copyright owner] 48*199767f8SToomas Soome * 49*199767f8SToomas Soome * CDDL HEADER END 50*199767f8SToomas Soome */ 51*199767f8SToomas Soome /* 52*199767f8SToomas Soome * Copyright 2009 Sun Microsystems, Inc. All rights reserved. 53*199767f8SToomas Soome * Use is subject to license terms. 54*199767f8SToomas Soome */ 55*199767f8SToomas Soome /* 56*199767f8SToomas Soome * Copyright 2013 by Saso Kiselkov. All rights reserved. 57*199767f8SToomas Soome */ 58*199767f8SToomas Soome /* 59*199767f8SToomas Soome * Copyright (c) 2013 by Delphix. All rights reserved. 60*199767f8SToomas Soome */ 61*199767f8SToomas Soome 62*199767f8SToomas Soome #define MAXNAMELEN 256 63*199767f8SToomas Soome 64*199767f8SToomas Soome #define _NOTE(s) 65*199767f8SToomas Soome 66*199767f8SToomas Soome typedef enum { B_FALSE, B_TRUE } boolean_t; 67*199767f8SToomas Soome 68*199767f8SToomas Soome /* CRC64 table */ 69*199767f8SToomas Soome #define ZFS_CRC64_POLY 0xC96C5795D7870F42ULL /* ECMA-182, reflected form */ 70*199767f8SToomas Soome 71*199767f8SToomas Soome /* 72*199767f8SToomas Soome * Macros for various sorts of alignment and rounding when the alignment 73*199767f8SToomas Soome * is known to be a power of 2. 74*199767f8SToomas Soome */ 75*199767f8SToomas Soome #define P2ALIGN(x, align) ((x) & -(align)) 76*199767f8SToomas Soome #define P2PHASE(x, align) ((x) & ((align) - 1)) 77*199767f8SToomas Soome #define P2NPHASE(x, align) (-(x) & ((align) - 1)) 78*199767f8SToomas Soome #define P2ROUNDUP(x, align) (-(-(x) & -(align))) 79*199767f8SToomas Soome #define P2END(x, align) (-(~(x) & -(align))) 80*199767f8SToomas Soome #define P2PHASEUP(x, align, phase) ((phase) - (((phase) - (x)) & -(align))) 81*199767f8SToomas Soome #define P2BOUNDARY(off, len, align) (((off) ^ ((off) + (len) - 1)) > (align) - 1) 82*199767f8SToomas Soome 83*199767f8SToomas Soome /* 84*199767f8SToomas Soome * General-purpose 32-bit and 64-bit bitfield encodings. 85*199767f8SToomas Soome */ 86*199767f8SToomas Soome #define BF32_DECODE(x, low, len) P2PHASE((x) >> (low), 1U << (len)) 87*199767f8SToomas Soome #define BF64_DECODE(x, low, len) P2PHASE((x) >> (low), 1ULL << (len)) 88*199767f8SToomas Soome #define BF32_ENCODE(x, low, len) (P2PHASE((x), 1U << (len)) << (low)) 89*199767f8SToomas Soome #define BF64_ENCODE(x, low, len) (P2PHASE((x), 1ULL << (len)) << (low)) 90*199767f8SToomas Soome 91*199767f8SToomas Soome #define BF32_GET(x, low, len) BF32_DECODE(x, low, len) 92*199767f8SToomas Soome #define BF64_GET(x, low, len) BF64_DECODE(x, low, len) 93*199767f8SToomas Soome 94*199767f8SToomas Soome #define BF32_SET(x, low, len, val) \ 95*199767f8SToomas Soome ((x) ^= BF32_ENCODE((x >> low) ^ (val), low, len)) 96*199767f8SToomas Soome #define BF64_SET(x, low, len, val) \ 97*199767f8SToomas Soome ((x) ^= BF64_ENCODE((x >> low) ^ (val), low, len)) 98*199767f8SToomas Soome 99*199767f8SToomas Soome #define BF32_GET_SB(x, low, len, shift, bias) \ 100*199767f8SToomas Soome ((BF32_GET(x, low, len) + (bias)) << (shift)) 101*199767f8SToomas Soome #define BF64_GET_SB(x, low, len, shift, bias) \ 102*199767f8SToomas Soome ((BF64_GET(x, low, len) + (bias)) << (shift)) 103*199767f8SToomas Soome 104*199767f8SToomas Soome #define BF32_SET_SB(x, low, len, shift, bias, val) \ 105*199767f8SToomas Soome BF32_SET(x, low, len, ((val) >> (shift)) - (bias)) 106*199767f8SToomas Soome #define BF64_SET_SB(x, low, len, shift, bias, val) \ 107*199767f8SToomas Soome BF64_SET(x, low, len, ((val) >> (shift)) - (bias)) 108*199767f8SToomas Soome 109*199767f8SToomas Soome /* 110*199767f8SToomas Soome * Macros to reverse byte order 111*199767f8SToomas Soome */ 112*199767f8SToomas Soome #define BSWAP_8(x) ((x) & 0xff) 113*199767f8SToomas Soome #define BSWAP_16(x) ((BSWAP_8(x) << 8) | BSWAP_8((x) >> 8)) 114*199767f8SToomas Soome #define BSWAP_32(x) ((BSWAP_16(x) << 16) | BSWAP_16((x) >> 16)) 115*199767f8SToomas Soome #define BSWAP_64(x) ((BSWAP_32(x) << 32) | BSWAP_32((x) >> 32)) 116*199767f8SToomas Soome 117*199767f8SToomas Soome #define SPA_MINBLOCKSHIFT 9 118*199767f8SToomas Soome #define SPA_OLDMAXBLOCKSHIFT 17 119*199767f8SToomas Soome #define SPA_MAXBLOCKSHIFT 24 120*199767f8SToomas Soome #define SPA_MINBLOCKSIZE (1ULL << SPA_MINBLOCKSHIFT) 121*199767f8SToomas Soome #define SPA_OLDMAXBLOCKSIZE (1ULL << SPA_OLDMAXBLOCKSHIFT) 122*199767f8SToomas Soome #define SPA_MAXBLOCKSIZE (1ULL << SPA_MAXBLOCKSHIFT) 123*199767f8SToomas Soome 124*199767f8SToomas Soome /* 125*199767f8SToomas Soome * The DVA size encodings for LSIZE and PSIZE support blocks up to 32MB. 126*199767f8SToomas Soome * The ASIZE encoding should be at least 64 times larger (6 more bits) 127*199767f8SToomas Soome * to support up to 4-way RAID-Z mirror mode with worst-case gang block 128*199767f8SToomas Soome * overhead, three DVAs per bp, plus one more bit in case we do anything 129*199767f8SToomas Soome * else that expands the ASIZE. 130*199767f8SToomas Soome */ 131*199767f8SToomas Soome #define SPA_LSIZEBITS 16 /* LSIZE up to 32M (2^16 * 512) */ 132*199767f8SToomas Soome #define SPA_PSIZEBITS 16 /* PSIZE up to 32M (2^16 * 512) */ 133*199767f8SToomas Soome #define SPA_ASIZEBITS 24 /* ASIZE up to 64 times larger */ 134*199767f8SToomas Soome 135*199767f8SToomas Soome /* 136*199767f8SToomas Soome * All SPA data is represented by 128-bit data virtual addresses (DVAs). 137*199767f8SToomas Soome * The members of the dva_t should be considered opaque outside the SPA. 138*199767f8SToomas Soome */ 139*199767f8SToomas Soome typedef struct dva { 140*199767f8SToomas Soome uint64_t dva_word[2]; 141*199767f8SToomas Soome } dva_t; 142*199767f8SToomas Soome 143*199767f8SToomas Soome /* 144*199767f8SToomas Soome * Each block has a 256-bit checksum -- strong enough for cryptographic hashes. 145*199767f8SToomas Soome */ 146*199767f8SToomas Soome typedef struct zio_cksum { 147*199767f8SToomas Soome uint64_t zc_word[4]; 148*199767f8SToomas Soome } zio_cksum_t; 149*199767f8SToomas Soome 150*199767f8SToomas Soome /* 151*199767f8SToomas Soome * Some checksums/hashes need a 256-bit initialization salt. This salt is kept 152*199767f8SToomas Soome * secret and is suitable for use in MAC algorithms as the key. 153*199767f8SToomas Soome */ 154*199767f8SToomas Soome typedef struct zio_cksum_salt { 155*199767f8SToomas Soome uint8_t zcs_bytes[32]; 156*199767f8SToomas Soome } zio_cksum_salt_t; 157*199767f8SToomas Soome 158*199767f8SToomas Soome /* 159*199767f8SToomas Soome * Each block is described by its DVAs, time of birth, checksum, etc. 160*199767f8SToomas Soome * The word-by-word, bit-by-bit layout of the blkptr is as follows: 161*199767f8SToomas Soome * 162*199767f8SToomas Soome * 64 56 48 40 32 24 16 8 0 163*199767f8SToomas Soome * +-------+-------+-------+-------+-------+-------+-------+-------+ 164*199767f8SToomas Soome * 0 | vdev1 | GRID | ASIZE | 165*199767f8SToomas Soome * +-------+-------+-------+-------+-------+-------+-------+-------+ 166*199767f8SToomas Soome * 1 |G| offset1 | 167*199767f8SToomas Soome * +-------+-------+-------+-------+-------+-------+-------+-------+ 168*199767f8SToomas Soome * 2 | vdev2 | GRID | ASIZE | 169*199767f8SToomas Soome * +-------+-------+-------+-------+-------+-------+-------+-------+ 170*199767f8SToomas Soome * 3 |G| offset2 | 171*199767f8SToomas Soome * +-------+-------+-------+-------+-------+-------+-------+-------+ 172*199767f8SToomas Soome * 4 | vdev3 | GRID | ASIZE | 173*199767f8SToomas Soome * +-------+-------+-------+-------+-------+-------+-------+-------+ 174*199767f8SToomas Soome * 5 |G| offset3 | 175*199767f8SToomas Soome * +-------+-------+-------+-------+-------+-------+-------+-------+ 176*199767f8SToomas Soome * 6 |BDX|lvl| type | cksum |E| comp| PSIZE | LSIZE | 177*199767f8SToomas Soome * +-------+-------+-------+-------+-------+-------+-------+-------+ 178*199767f8SToomas Soome * 7 | padding | 179*199767f8SToomas Soome * +-------+-------+-------+-------+-------+-------+-------+-------+ 180*199767f8SToomas Soome * 8 | padding | 181*199767f8SToomas Soome * +-------+-------+-------+-------+-------+-------+-------+-------+ 182*199767f8SToomas Soome * 9 | physical birth txg | 183*199767f8SToomas Soome * +-------+-------+-------+-------+-------+-------+-------+-------+ 184*199767f8SToomas Soome * a | logical birth txg | 185*199767f8SToomas Soome * +-------+-------+-------+-------+-------+-------+-------+-------+ 186*199767f8SToomas Soome * b | fill count | 187*199767f8SToomas Soome * +-------+-------+-------+-------+-------+-------+-------+-------+ 188*199767f8SToomas Soome * c | checksum[0] | 189*199767f8SToomas Soome * +-------+-------+-------+-------+-------+-------+-------+-------+ 190*199767f8SToomas Soome * d | checksum[1] | 191*199767f8SToomas Soome * +-------+-------+-------+-------+-------+-------+-------+-------+ 192*199767f8SToomas Soome * e | checksum[2] | 193*199767f8SToomas Soome * +-------+-------+-------+-------+-------+-------+-------+-------+ 194*199767f8SToomas Soome * f | checksum[3] | 195*199767f8SToomas Soome * +-------+-------+-------+-------+-------+-------+-------+-------+ 196*199767f8SToomas Soome * 197*199767f8SToomas Soome * Legend: 198*199767f8SToomas Soome * 199*199767f8SToomas Soome * vdev virtual device ID 200*199767f8SToomas Soome * offset offset into virtual device 201*199767f8SToomas Soome * LSIZE logical size 202*199767f8SToomas Soome * PSIZE physical size (after compression) 203*199767f8SToomas Soome * ASIZE allocated size (including RAID-Z parity and gang block headers) 204*199767f8SToomas Soome * GRID RAID-Z layout information (reserved for future use) 205*199767f8SToomas Soome * cksum checksum function 206*199767f8SToomas Soome * comp compression function 207*199767f8SToomas Soome * G gang block indicator 208*199767f8SToomas Soome * B byteorder (endianness) 209*199767f8SToomas Soome * D dedup 210*199767f8SToomas Soome * X encryption (on version 30, which is not supported) 211*199767f8SToomas Soome * E blkptr_t contains embedded data (see below) 212*199767f8SToomas Soome * lvl level of indirection 213*199767f8SToomas Soome * type DMU object type 214*199767f8SToomas Soome * phys birth txg of block allocation; zero if same as logical birth txg 215*199767f8SToomas Soome * log. birth transaction group in which the block was logically born 216*199767f8SToomas Soome * fill count number of non-zero blocks under this bp 217*199767f8SToomas Soome * checksum[4] 256-bit checksum of the data this bp describes 218*199767f8SToomas Soome */ 219*199767f8SToomas Soome 220*199767f8SToomas Soome /* 221*199767f8SToomas Soome * "Embedded" blkptr_t's don't actually point to a block, instead they 222*199767f8SToomas Soome * have a data payload embedded in the blkptr_t itself. See the comment 223*199767f8SToomas Soome * in blkptr.c for more details. 224*199767f8SToomas Soome * 225*199767f8SToomas Soome * The blkptr_t is laid out as follows: 226*199767f8SToomas Soome * 227*199767f8SToomas Soome * 64 56 48 40 32 24 16 8 0 228*199767f8SToomas Soome * +-------+-------+-------+-------+-------+-------+-------+-------+ 229*199767f8SToomas Soome * 0 | payload | 230*199767f8SToomas Soome * 1 | payload | 231*199767f8SToomas Soome * 2 | payload | 232*199767f8SToomas Soome * 3 | payload | 233*199767f8SToomas Soome * 4 | payload | 234*199767f8SToomas Soome * 5 | payload | 235*199767f8SToomas Soome * +-------+-------+-------+-------+-------+-------+-------+-------+ 236*199767f8SToomas Soome * 6 |BDX|lvl| type | etype |E| comp| PSIZE| LSIZE | 237*199767f8SToomas Soome * +-------+-------+-------+-------+-------+-------+-------+-------+ 238*199767f8SToomas Soome * 7 | payload | 239*199767f8SToomas Soome * 8 | payload | 240*199767f8SToomas Soome * 9 | payload | 241*199767f8SToomas Soome * +-------+-------+-------+-------+-------+-------+-------+-------+ 242*199767f8SToomas Soome * a | logical birth txg | 243*199767f8SToomas Soome * +-------+-------+-------+-------+-------+-------+-------+-------+ 244*199767f8SToomas Soome * b | payload | 245*199767f8SToomas Soome * c | payload | 246*199767f8SToomas Soome * d | payload | 247*199767f8SToomas Soome * e | payload | 248*199767f8SToomas Soome * f | payload | 249*199767f8SToomas Soome * +-------+-------+-------+-------+-------+-------+-------+-------+ 250*199767f8SToomas Soome * 251*199767f8SToomas Soome * Legend: 252*199767f8SToomas Soome * 253*199767f8SToomas Soome * payload contains the embedded data 254*199767f8SToomas Soome * B (byteorder) byteorder (endianness) 255*199767f8SToomas Soome * D (dedup) padding (set to zero) 256*199767f8SToomas Soome * X encryption (set to zero; see above) 257*199767f8SToomas Soome * E (embedded) set to one 258*199767f8SToomas Soome * lvl indirection level 259*199767f8SToomas Soome * type DMU object type 260*199767f8SToomas Soome * etype how to interpret embedded data (BP_EMBEDDED_TYPE_*) 261*199767f8SToomas Soome * comp compression function of payload 262*199767f8SToomas Soome * PSIZE size of payload after compression, in bytes 263*199767f8SToomas Soome * LSIZE logical size of payload, in bytes 264*199767f8SToomas Soome * note that 25 bits is enough to store the largest 265*199767f8SToomas Soome * "normal" BP's LSIZE (2^16 * 2^9) in bytes 266*199767f8SToomas Soome * log. birth transaction group in which the block was logically born 267*199767f8SToomas Soome * 268*199767f8SToomas Soome * Note that LSIZE and PSIZE are stored in bytes, whereas for non-embedded 269*199767f8SToomas Soome * bp's they are stored in units of SPA_MINBLOCKSHIFT. 270*199767f8SToomas Soome * Generally, the generic BP_GET_*() macros can be used on embedded BP's. 271*199767f8SToomas Soome * The B, D, X, lvl, type, and comp fields are stored the same as with normal 272*199767f8SToomas Soome * BP's so the BP_SET_* macros can be used with them. etype, PSIZE, LSIZE must 273*199767f8SToomas Soome * be set with the BPE_SET_* macros. BP_SET_EMBEDDED() should be called before 274*199767f8SToomas Soome * other macros, as they assert that they are only used on BP's of the correct 275*199767f8SToomas Soome * "embedded-ness". 276*199767f8SToomas Soome */ 277*199767f8SToomas Soome 278*199767f8SToomas Soome #define BPE_GET_ETYPE(bp) \ 279*199767f8SToomas Soome (ASSERT(BP_IS_EMBEDDED(bp)), \ 280*199767f8SToomas Soome BF64_GET((bp)->blk_prop, 40, 8)) 281*199767f8SToomas Soome #define BPE_SET_ETYPE(bp, t) do { \ 282*199767f8SToomas Soome ASSERT(BP_IS_EMBEDDED(bp)); \ 283*199767f8SToomas Soome BF64_SET((bp)->blk_prop, 40, 8, t); \ 284*199767f8SToomas Soome _NOTE(CONSTCOND) } while (0) 285*199767f8SToomas Soome 286*199767f8SToomas Soome #define BPE_GET_LSIZE(bp) \ 287*199767f8SToomas Soome (ASSERT(BP_IS_EMBEDDED(bp)), \ 288*199767f8SToomas Soome BF64_GET_SB((bp)->blk_prop, 0, 25, 0, 1)) 289*199767f8SToomas Soome #define BPE_SET_LSIZE(bp, x) do { \ 290*199767f8SToomas Soome ASSERT(BP_IS_EMBEDDED(bp)); \ 291*199767f8SToomas Soome BF64_SET_SB((bp)->blk_prop, 0, 25, 0, 1, x); \ 292*199767f8SToomas Soome _NOTE(CONSTCOND) } while (0) 293*199767f8SToomas Soome 294*199767f8SToomas Soome #define BPE_GET_PSIZE(bp) \ 295*199767f8SToomas Soome (ASSERT(BP_IS_EMBEDDED(bp)), \ 296*199767f8SToomas Soome BF64_GET_SB((bp)->blk_prop, 25, 7, 0, 1)) 297*199767f8SToomas Soome #define BPE_SET_PSIZE(bp, x) do { \ 298*199767f8SToomas Soome ASSERT(BP_IS_EMBEDDED(bp)); \ 299*199767f8SToomas Soome BF64_SET_SB((bp)->blk_prop, 25, 7, 0, 1, x); \ 300*199767f8SToomas Soome _NOTE(CONSTCOND) } while (0) 301*199767f8SToomas Soome 302*199767f8SToomas Soome typedef enum bp_embedded_type { 303*199767f8SToomas Soome BP_EMBEDDED_TYPE_DATA, 304*199767f8SToomas Soome BP_EMBEDDED_TYPE_RESERVED, /* Reserved for an unintegrated feature. */ 305*199767f8SToomas Soome NUM_BP_EMBEDDED_TYPES = BP_EMBEDDED_TYPE_RESERVED 306*199767f8SToomas Soome } bp_embedded_type_t; 307*199767f8SToomas Soome 308*199767f8SToomas Soome #define BPE_NUM_WORDS 14 309*199767f8SToomas Soome #define BPE_PAYLOAD_SIZE (BPE_NUM_WORDS * sizeof (uint64_t)) 310*199767f8SToomas Soome #define BPE_IS_PAYLOADWORD(bp, wp) \ 311*199767f8SToomas Soome ((wp) != &(bp)->blk_prop && (wp) != &(bp)->blk_birth) 312*199767f8SToomas Soome 313*199767f8SToomas Soome #define SPA_BLKPTRSHIFT 7 /* blkptr_t is 128 bytes */ 314*199767f8SToomas Soome #define SPA_DVAS_PER_BP 3 /* Number of DVAs in a bp */ 315*199767f8SToomas Soome 316*199767f8SToomas Soome typedef struct blkptr { 317*199767f8SToomas Soome dva_t blk_dva[SPA_DVAS_PER_BP]; /* Data Virtual Addresses */ 318*199767f8SToomas Soome uint64_t blk_prop; /* size, compression, type, etc */ 319*199767f8SToomas Soome uint64_t blk_pad[2]; /* Extra space for the future */ 320*199767f8SToomas Soome uint64_t blk_phys_birth; /* txg when block was allocated */ 321*199767f8SToomas Soome uint64_t blk_birth; /* transaction group at birth */ 322*199767f8SToomas Soome uint64_t blk_fill; /* fill count */ 323*199767f8SToomas Soome zio_cksum_t blk_cksum; /* 256-bit checksum */ 324*199767f8SToomas Soome } blkptr_t; 325*199767f8SToomas Soome 326*199767f8SToomas Soome /* 327*199767f8SToomas Soome * Macros to get and set fields in a bp or DVA. 328*199767f8SToomas Soome */ 329*199767f8SToomas Soome #define DVA_GET_ASIZE(dva) \ 330*199767f8SToomas Soome BF64_GET_SB((dva)->dva_word[0], 0, SPA_ASIZEBITS, SPA_MINBLOCKSHIFT, 0) 331*199767f8SToomas Soome #define DVA_SET_ASIZE(dva, x) \ 332*199767f8SToomas Soome BF64_SET_SB((dva)->dva_word[0], 0, SPA_ASIZEBITS, \ 333*199767f8SToomas Soome SPA_MINBLOCKSHIFT, 0, x) 334*199767f8SToomas Soome 335*199767f8SToomas Soome #define DVA_GET_GRID(dva) BF64_GET((dva)->dva_word[0], 24, 8) 336*199767f8SToomas Soome #define DVA_SET_GRID(dva, x) BF64_SET((dva)->dva_word[0], 24, 8, x) 337*199767f8SToomas Soome 338*199767f8SToomas Soome #define DVA_GET_VDEV(dva) BF64_GET((dva)->dva_word[0], 32, 32) 339*199767f8SToomas Soome #define DVA_SET_VDEV(dva, x) BF64_SET((dva)->dva_word[0], 32, 32, x) 340*199767f8SToomas Soome 341*199767f8SToomas Soome #define DVA_GET_OFFSET(dva) \ 342*199767f8SToomas Soome BF64_GET_SB((dva)->dva_word[1], 0, 63, SPA_MINBLOCKSHIFT, 0) 343*199767f8SToomas Soome #define DVA_SET_OFFSET(dva, x) \ 344*199767f8SToomas Soome BF64_SET_SB((dva)->dva_word[1], 0, 63, SPA_MINBLOCKSHIFT, 0, x) 345*199767f8SToomas Soome 346*199767f8SToomas Soome #define DVA_GET_GANG(dva) BF64_GET((dva)->dva_word[1], 63, 1) 347*199767f8SToomas Soome #define DVA_SET_GANG(dva, x) BF64_SET((dva)->dva_word[1], 63, 1, x) 348*199767f8SToomas Soome 349*199767f8SToomas Soome #define BP_GET_LSIZE(bp) \ 350*199767f8SToomas Soome (BP_IS_EMBEDDED(bp) ? \ 351*199767f8SToomas Soome (BPE_GET_ETYPE(bp) == BP_EMBEDDED_TYPE_DATA ? BPE_GET_LSIZE(bp) : 0): \ 352*199767f8SToomas Soome BF64_GET_SB((bp)->blk_prop, 0, SPA_LSIZEBITS, SPA_MINBLOCKSHIFT, 1)) 353*199767f8SToomas Soome #define BP_SET_LSIZE(bp, x) do { \ 354*199767f8SToomas Soome ASSERT(!BP_IS_EMBEDDED(bp)); \ 355*199767f8SToomas Soome BF64_SET_SB((bp)->blk_prop, \ 356*199767f8SToomas Soome 0, SPA_LSIZEBITS, SPA_MINBLOCKSHIFT, 1, x); \ 357*199767f8SToomas Soome _NOTE(CONSTCOND) } while (0) 358*199767f8SToomas Soome 359*199767f8SToomas Soome #define BP_GET_PSIZE(bp) \ 360*199767f8SToomas Soome BF64_GET_SB((bp)->blk_prop, 16, SPA_LSIZEBITS, SPA_MINBLOCKSHIFT, 1) 361*199767f8SToomas Soome #define BP_SET_PSIZE(bp, x) \ 362*199767f8SToomas Soome BF64_SET_SB((bp)->blk_prop, 16, SPA_LSIZEBITS, SPA_MINBLOCKSHIFT, 1, x) 363*199767f8SToomas Soome 364*199767f8SToomas Soome #define BP_GET_COMPRESS(bp) BF64_GET((bp)->blk_prop, 32, 7) 365*199767f8SToomas Soome #define BP_SET_COMPRESS(bp, x) BF64_SET((bp)->blk_prop, 32, 7, x) 366*199767f8SToomas Soome 367*199767f8SToomas Soome #define BP_GET_CHECKSUM(bp) BF64_GET((bp)->blk_prop, 40, 8) 368*199767f8SToomas Soome #define BP_SET_CHECKSUM(bp, x) BF64_SET((bp)->blk_prop, 40, 8, x) 369*199767f8SToomas Soome 370*199767f8SToomas Soome #define BP_GET_TYPE(bp) BF64_GET((bp)->blk_prop, 48, 8) 371*199767f8SToomas Soome #define BP_SET_TYPE(bp, x) BF64_SET((bp)->blk_prop, 48, 8, x) 372*199767f8SToomas Soome 373*199767f8SToomas Soome #define BP_GET_LEVEL(bp) BF64_GET((bp)->blk_prop, 56, 5) 374*199767f8SToomas Soome #define BP_SET_LEVEL(bp, x) BF64_SET((bp)->blk_prop, 56, 5, x) 375*199767f8SToomas Soome 376*199767f8SToomas Soome #define BP_IS_EMBEDDED(bp) BF64_GET((bp)->blk_prop, 39, 1) 377*199767f8SToomas Soome 378*199767f8SToomas Soome #define BP_GET_DEDUP(bp) BF64_GET((bp)->blk_prop, 62, 1) 379*199767f8SToomas Soome #define BP_SET_DEDUP(bp, x) BF64_SET((bp)->blk_prop, 62, 1, x) 380*199767f8SToomas Soome 381*199767f8SToomas Soome #define BP_GET_BYTEORDER(bp) BF64_GET((bp)->blk_prop, 63, 1) 382*199767f8SToomas Soome #define BP_SET_BYTEORDER(bp, x) BF64_SET((bp)->blk_prop, 63, 1, x) 383*199767f8SToomas Soome 384*199767f8SToomas Soome #define BP_PHYSICAL_BIRTH(bp) \ 385*199767f8SToomas Soome ((bp)->blk_phys_birth ? (bp)->blk_phys_birth : (bp)->blk_birth) 386*199767f8SToomas Soome 387*199767f8SToomas Soome #define BP_GET_ASIZE(bp) \ 388*199767f8SToomas Soome (DVA_GET_ASIZE(&(bp)->blk_dva[0]) + DVA_GET_ASIZE(&(bp)->blk_dva[1]) + \ 389*199767f8SToomas Soome DVA_GET_ASIZE(&(bp)->blk_dva[2])) 390*199767f8SToomas Soome 391*199767f8SToomas Soome #define BP_GET_UCSIZE(bp) \ 392*199767f8SToomas Soome ((BP_GET_LEVEL(bp) > 0 || dmu_ot[BP_GET_TYPE(bp)].ot_metadata) ? \ 393*199767f8SToomas Soome BP_GET_PSIZE(bp) : BP_GET_LSIZE(bp)); 394*199767f8SToomas Soome 395*199767f8SToomas Soome #define BP_GET_NDVAS(bp) \ 396*199767f8SToomas Soome (!!DVA_GET_ASIZE(&(bp)->blk_dva[0]) + \ 397*199767f8SToomas Soome !!DVA_GET_ASIZE(&(bp)->blk_dva[1]) + \ 398*199767f8SToomas Soome !!DVA_GET_ASIZE(&(bp)->blk_dva[2])) 399*199767f8SToomas Soome 400*199767f8SToomas Soome #define DVA_EQUAL(dva1, dva2) \ 401*199767f8SToomas Soome ((dva1)->dva_word[1] == (dva2)->dva_word[1] && \ 402*199767f8SToomas Soome (dva1)->dva_word[0] == (dva2)->dva_word[0]) 403*199767f8SToomas Soome 404*199767f8SToomas Soome #define ZIO_CHECKSUM_EQUAL(zc1, zc2) \ 405*199767f8SToomas Soome (0 == (((zc1).zc_word[0] - (zc2).zc_word[0]) | \ 406*199767f8SToomas Soome ((zc1).zc_word[1] - (zc2).zc_word[1]) | \ 407*199767f8SToomas Soome ((zc1).zc_word[2] - (zc2).zc_word[2]) | \ 408*199767f8SToomas Soome ((zc1).zc_word[3] - (zc2).zc_word[3]))) 409*199767f8SToomas Soome 410*199767f8SToomas Soome 411*199767f8SToomas Soome #define DVA_IS_VALID(dva) (DVA_GET_ASIZE(dva) != 0) 412*199767f8SToomas Soome 413*199767f8SToomas Soome #define ZIO_SET_CHECKSUM(zcp, w0, w1, w2, w3) \ 414*199767f8SToomas Soome { \ 415*199767f8SToomas Soome (zcp)->zc_word[0] = w0; \ 416*199767f8SToomas Soome (zcp)->zc_word[1] = w1; \ 417*199767f8SToomas Soome (zcp)->zc_word[2] = w2; \ 418*199767f8SToomas Soome (zcp)->zc_word[3] = w3; \ 419*199767f8SToomas Soome } 420*199767f8SToomas Soome 421*199767f8SToomas Soome #define BP_IDENTITY(bp) (&(bp)->blk_dva[0]) 422*199767f8SToomas Soome #define BP_IS_GANG(bp) DVA_GET_GANG(BP_IDENTITY(bp)) 423*199767f8SToomas Soome #define DVA_IS_EMPTY(dva) ((dva)->dva_word[0] == 0ULL && \ 424*199767f8SToomas Soome (dva)->dva_word[1] == 0ULL) 425*199767f8SToomas Soome #define BP_IS_HOLE(bp) DVA_IS_EMPTY(BP_IDENTITY(bp)) 426*199767f8SToomas Soome #define BP_IS_OLDER(bp, txg) (!BP_IS_HOLE(bp) && (bp)->blk_birth < (txg)) 427*199767f8SToomas Soome 428*199767f8SToomas Soome #define BP_ZERO(bp) \ 429*199767f8SToomas Soome { \ 430*199767f8SToomas Soome (bp)->blk_dva[0].dva_word[0] = 0; \ 431*199767f8SToomas Soome (bp)->blk_dva[0].dva_word[1] = 0; \ 432*199767f8SToomas Soome (bp)->blk_dva[1].dva_word[0] = 0; \ 433*199767f8SToomas Soome (bp)->blk_dva[1].dva_word[1] = 0; \ 434*199767f8SToomas Soome (bp)->blk_dva[2].dva_word[0] = 0; \ 435*199767f8SToomas Soome (bp)->blk_dva[2].dva_word[1] = 0; \ 436*199767f8SToomas Soome (bp)->blk_prop = 0; \ 437*199767f8SToomas Soome (bp)->blk_pad[0] = 0; \ 438*199767f8SToomas Soome (bp)->blk_pad[1] = 0; \ 439*199767f8SToomas Soome (bp)->blk_phys_birth = 0; \ 440*199767f8SToomas Soome (bp)->blk_birth = 0; \ 441*199767f8SToomas Soome (bp)->blk_fill = 0; \ 442*199767f8SToomas Soome ZIO_SET_CHECKSUM(&(bp)->blk_cksum, 0, 0, 0, 0); \ 443*199767f8SToomas Soome } 444*199767f8SToomas Soome 445*199767f8SToomas Soome #define BPE_NUM_WORDS 14 446*199767f8SToomas Soome #define BPE_PAYLOAD_SIZE (BPE_NUM_WORDS * sizeof (uint64_t)) 447*199767f8SToomas Soome #define BPE_IS_PAYLOADWORD(bp, wp) \ 448*199767f8SToomas Soome ((wp) != &(bp)->blk_prop && (wp) != &(bp)->blk_birth) 449*199767f8SToomas Soome 450*199767f8SToomas Soome /* 451*199767f8SToomas Soome * Embedded checksum 452*199767f8SToomas Soome */ 453*199767f8SToomas Soome #define ZEC_MAGIC 0x210da7ab10c7a11ULL 454*199767f8SToomas Soome 455*199767f8SToomas Soome typedef struct zio_eck { 456*199767f8SToomas Soome uint64_t zec_magic; /* for validation, endianness */ 457*199767f8SToomas Soome zio_cksum_t zec_cksum; /* 256-bit checksum */ 458*199767f8SToomas Soome } zio_eck_t; 459*199767f8SToomas Soome 460*199767f8SToomas Soome /* 461*199767f8SToomas Soome * Gang block headers are self-checksumming and contain an array 462*199767f8SToomas Soome * of block pointers. 463*199767f8SToomas Soome */ 464*199767f8SToomas Soome #define SPA_GANGBLOCKSIZE SPA_MINBLOCKSIZE 465*199767f8SToomas Soome #define SPA_GBH_NBLKPTRS ((SPA_GANGBLOCKSIZE - \ 466*199767f8SToomas Soome sizeof (zio_eck_t)) / sizeof (blkptr_t)) 467*199767f8SToomas Soome #define SPA_GBH_FILLER ((SPA_GANGBLOCKSIZE - \ 468*199767f8SToomas Soome sizeof (zio_eck_t) - \ 469*199767f8SToomas Soome (SPA_GBH_NBLKPTRS * sizeof (blkptr_t))) /\ 470*199767f8SToomas Soome sizeof (uint64_t)) 471*199767f8SToomas Soome 472*199767f8SToomas Soome typedef struct zio_gbh { 473*199767f8SToomas Soome blkptr_t zg_blkptr[SPA_GBH_NBLKPTRS]; 474*199767f8SToomas Soome uint64_t zg_filler[SPA_GBH_FILLER]; 475*199767f8SToomas Soome zio_eck_t zg_tail; 476*199767f8SToomas Soome } zio_gbh_phys_t; 477*199767f8SToomas Soome 478*199767f8SToomas Soome #define VDEV_RAIDZ_MAXPARITY 3 479*199767f8SToomas Soome 480*199767f8SToomas Soome #define VDEV_PAD_SIZE (8 << 10) 481*199767f8SToomas Soome /* 2 padding areas (vl_pad1 and vl_pad2) to skip */ 482*199767f8SToomas Soome #define VDEV_SKIP_SIZE VDEV_PAD_SIZE * 2 483*199767f8SToomas Soome #define VDEV_PHYS_SIZE (112 << 10) 484*199767f8SToomas Soome #define VDEV_UBERBLOCK_RING (128 << 10) 485*199767f8SToomas Soome 486*199767f8SToomas Soome #define VDEV_UBERBLOCK_SHIFT(vd) \ 487*199767f8SToomas Soome MAX((vd)->v_top->v_ashift, UBERBLOCK_SHIFT) 488*199767f8SToomas Soome #define VDEV_UBERBLOCK_COUNT(vd) \ 489*199767f8SToomas Soome (VDEV_UBERBLOCK_RING >> VDEV_UBERBLOCK_SHIFT(vd)) 490*199767f8SToomas Soome #define VDEV_UBERBLOCK_OFFSET(vd, n) \ 491*199767f8SToomas Soome offsetof(vdev_label_t, vl_uberblock[(n) << VDEV_UBERBLOCK_SHIFT(vd)]) 492*199767f8SToomas Soome #define VDEV_UBERBLOCK_SIZE(vd) (1ULL << VDEV_UBERBLOCK_SHIFT(vd)) 493*199767f8SToomas Soome 494*199767f8SToomas Soome typedef struct vdev_phys { 495*199767f8SToomas Soome char vp_nvlist[VDEV_PHYS_SIZE - sizeof (zio_eck_t)]; 496*199767f8SToomas Soome zio_eck_t vp_zbt; 497*199767f8SToomas Soome } vdev_phys_t; 498*199767f8SToomas Soome 499*199767f8SToomas Soome typedef struct vdev_label { 500*199767f8SToomas Soome char vl_pad1[VDEV_PAD_SIZE]; /* 8K */ 501*199767f8SToomas Soome char vl_pad2[VDEV_PAD_SIZE]; /* 8K */ 502*199767f8SToomas Soome vdev_phys_t vl_vdev_phys; /* 112K */ 503*199767f8SToomas Soome char vl_uberblock[VDEV_UBERBLOCK_RING]; /* 128K */ 504*199767f8SToomas Soome } vdev_label_t; /* 256K total */ 505*199767f8SToomas Soome 506*199767f8SToomas Soome /* 507*199767f8SToomas Soome * vdev_dirty() flags 508*199767f8SToomas Soome */ 509*199767f8SToomas Soome #define VDD_METASLAB 0x01 510*199767f8SToomas Soome #define VDD_DTL 0x02 511*199767f8SToomas Soome 512*199767f8SToomas Soome /* 513*199767f8SToomas Soome * Size and offset of embedded boot loader region on each label. 514*199767f8SToomas Soome * The total size of the first two labels plus the boot area is 4MB. 515*199767f8SToomas Soome */ 516*199767f8SToomas Soome #define VDEV_BOOT_OFFSET (2 * sizeof (vdev_label_t)) 517*199767f8SToomas Soome #define VDEV_BOOT_SIZE (7ULL << 19) /* 3.5M */ 518*199767f8SToomas Soome 519*199767f8SToomas Soome /* 520*199767f8SToomas Soome * Size of label regions at the start and end of each leaf device. 521*199767f8SToomas Soome */ 522*199767f8SToomas Soome #define VDEV_LABEL_START_SIZE (2 * sizeof (vdev_label_t) + VDEV_BOOT_SIZE) 523*199767f8SToomas Soome #define VDEV_LABEL_END_SIZE (2 * sizeof (vdev_label_t)) 524*199767f8SToomas Soome #define VDEV_LABELS 4 525*199767f8SToomas Soome 526*199767f8SToomas Soome enum zio_checksum { 527*199767f8SToomas Soome ZIO_CHECKSUM_INHERIT = 0, 528*199767f8SToomas Soome ZIO_CHECKSUM_ON, 529*199767f8SToomas Soome ZIO_CHECKSUM_OFF, 530*199767f8SToomas Soome ZIO_CHECKSUM_LABEL, 531*199767f8SToomas Soome ZIO_CHECKSUM_GANG_HEADER, 532*199767f8SToomas Soome ZIO_CHECKSUM_ZILOG, 533*199767f8SToomas Soome ZIO_CHECKSUM_FLETCHER_2, 534*199767f8SToomas Soome ZIO_CHECKSUM_FLETCHER_4, 535*199767f8SToomas Soome ZIO_CHECKSUM_SHA256, 536*199767f8SToomas Soome ZIO_CHECKSUM_ZILOG2, 537*199767f8SToomas Soome ZIO_CHECKSUM_NOPARITY, 538*199767f8SToomas Soome ZIO_CHECKSUM_SHA512, 539*199767f8SToomas Soome ZIO_CHECKSUM_SKEIN, 540*199767f8SToomas Soome ZIO_CHECKSUM_EDONR, 541*199767f8SToomas Soome ZIO_CHECKSUM_FUNCTIONS 542*199767f8SToomas Soome }; 543*199767f8SToomas Soome 544*199767f8SToomas Soome #define ZIO_CHECKSUM_ON_VALUE ZIO_CHECKSUM_FLETCHER_4 545*199767f8SToomas Soome #define ZIO_CHECKSUM_DEFAULT ZIO_CHECKSUM_ON 546*199767f8SToomas Soome 547*199767f8SToomas Soome enum zio_compress { 548*199767f8SToomas Soome ZIO_COMPRESS_INHERIT = 0, 549*199767f8SToomas Soome ZIO_COMPRESS_ON, 550*199767f8SToomas Soome ZIO_COMPRESS_OFF, 551*199767f8SToomas Soome ZIO_COMPRESS_LZJB, 552*199767f8SToomas Soome ZIO_COMPRESS_EMPTY, 553*199767f8SToomas Soome ZIO_COMPRESS_GZIP_1, 554*199767f8SToomas Soome ZIO_COMPRESS_GZIP_2, 555*199767f8SToomas Soome ZIO_COMPRESS_GZIP_3, 556*199767f8SToomas Soome ZIO_COMPRESS_GZIP_4, 557*199767f8SToomas Soome ZIO_COMPRESS_GZIP_5, 558*199767f8SToomas Soome ZIO_COMPRESS_GZIP_6, 559*199767f8SToomas Soome ZIO_COMPRESS_GZIP_7, 560*199767f8SToomas Soome ZIO_COMPRESS_GZIP_8, 561*199767f8SToomas Soome ZIO_COMPRESS_GZIP_9, 562*199767f8SToomas Soome ZIO_COMPRESS_ZLE, 563*199767f8SToomas Soome ZIO_COMPRESS_LZ4, 564*199767f8SToomas Soome ZIO_COMPRESS_FUNCTIONS 565*199767f8SToomas Soome }; 566*199767f8SToomas Soome 567*199767f8SToomas Soome #define ZIO_COMPRESS_ON_VALUE ZIO_COMPRESS_LZJB 568*199767f8SToomas Soome #define ZIO_COMPRESS_DEFAULT ZIO_COMPRESS_OFF 569*199767f8SToomas Soome 570*199767f8SToomas Soome /* nvlist pack encoding */ 571*199767f8SToomas Soome #define NV_ENCODE_NATIVE 0 572*199767f8SToomas Soome #define NV_ENCODE_XDR 1 573*199767f8SToomas Soome 574*199767f8SToomas Soome typedef enum { 575*199767f8SToomas Soome DATA_TYPE_UNKNOWN = 0, 576*199767f8SToomas Soome DATA_TYPE_BOOLEAN, 577*199767f8SToomas Soome DATA_TYPE_BYTE, 578*199767f8SToomas Soome DATA_TYPE_INT16, 579*199767f8SToomas Soome DATA_TYPE_UINT16, 580*199767f8SToomas Soome DATA_TYPE_INT32, 581*199767f8SToomas Soome DATA_TYPE_UINT32, 582*199767f8SToomas Soome DATA_TYPE_INT64, 583*199767f8SToomas Soome DATA_TYPE_UINT64, 584*199767f8SToomas Soome DATA_TYPE_STRING, 585*199767f8SToomas Soome DATA_TYPE_BYTE_ARRAY, 586*199767f8SToomas Soome DATA_TYPE_INT16_ARRAY, 587*199767f8SToomas Soome DATA_TYPE_UINT16_ARRAY, 588*199767f8SToomas Soome DATA_TYPE_INT32_ARRAY, 589*199767f8SToomas Soome DATA_TYPE_UINT32_ARRAY, 590*199767f8SToomas Soome DATA_TYPE_INT64_ARRAY, 591*199767f8SToomas Soome DATA_TYPE_UINT64_ARRAY, 592*199767f8SToomas Soome DATA_TYPE_STRING_ARRAY, 593*199767f8SToomas Soome DATA_TYPE_HRTIME, 594*199767f8SToomas Soome DATA_TYPE_NVLIST, 595*199767f8SToomas Soome DATA_TYPE_NVLIST_ARRAY, 596*199767f8SToomas Soome DATA_TYPE_BOOLEAN_VALUE, 597*199767f8SToomas Soome DATA_TYPE_INT8, 598*199767f8SToomas Soome DATA_TYPE_UINT8, 599*199767f8SToomas Soome DATA_TYPE_BOOLEAN_ARRAY, 600*199767f8SToomas Soome DATA_TYPE_INT8_ARRAY, 601*199767f8SToomas Soome DATA_TYPE_UINT8_ARRAY 602*199767f8SToomas Soome } data_type_t; 603*199767f8SToomas Soome 604*199767f8SToomas Soome /* 605*199767f8SToomas Soome * On-disk version number. 606*199767f8SToomas Soome */ 607*199767f8SToomas Soome #define SPA_VERSION_1 1ULL 608*199767f8SToomas Soome #define SPA_VERSION_2 2ULL 609*199767f8SToomas Soome #define SPA_VERSION_3 3ULL 610*199767f8SToomas Soome #define SPA_VERSION_4 4ULL 611*199767f8SToomas Soome #define SPA_VERSION_5 5ULL 612*199767f8SToomas Soome #define SPA_VERSION_6 6ULL 613*199767f8SToomas Soome #define SPA_VERSION_7 7ULL 614*199767f8SToomas Soome #define SPA_VERSION_8 8ULL 615*199767f8SToomas Soome #define SPA_VERSION_9 9ULL 616*199767f8SToomas Soome #define SPA_VERSION_10 10ULL 617*199767f8SToomas Soome #define SPA_VERSION_11 11ULL 618*199767f8SToomas Soome #define SPA_VERSION_12 12ULL 619*199767f8SToomas Soome #define SPA_VERSION_13 13ULL 620*199767f8SToomas Soome #define SPA_VERSION_14 14ULL 621*199767f8SToomas Soome #define SPA_VERSION_15 15ULL 622*199767f8SToomas Soome #define SPA_VERSION_16 16ULL 623*199767f8SToomas Soome #define SPA_VERSION_17 17ULL 624*199767f8SToomas Soome #define SPA_VERSION_18 18ULL 625*199767f8SToomas Soome #define SPA_VERSION_19 19ULL 626*199767f8SToomas Soome #define SPA_VERSION_20 20ULL 627*199767f8SToomas Soome #define SPA_VERSION_21 21ULL 628*199767f8SToomas Soome #define SPA_VERSION_22 22ULL 629*199767f8SToomas Soome #define SPA_VERSION_23 23ULL 630*199767f8SToomas Soome #define SPA_VERSION_24 24ULL 631*199767f8SToomas Soome #define SPA_VERSION_25 25ULL 632*199767f8SToomas Soome #define SPA_VERSION_26 26ULL 633*199767f8SToomas Soome #define SPA_VERSION_27 27ULL 634*199767f8SToomas Soome #define SPA_VERSION_28 28ULL 635*199767f8SToomas Soome #define SPA_VERSION_5000 5000ULL 636*199767f8SToomas Soome 637*199767f8SToomas Soome /* 638*199767f8SToomas Soome * When bumping up SPA_VERSION, make sure GRUB ZFS understands the on-disk 639*199767f8SToomas Soome * format change. Go to usr/src/grub/grub-0.97/stage2/{zfs-include/, fsys_zfs*}, 640*199767f8SToomas Soome * and do the appropriate changes. Also bump the version number in 641*199767f8SToomas Soome * usr/src/grub/capability. 642*199767f8SToomas Soome */ 643*199767f8SToomas Soome #define SPA_VERSION SPA_VERSION_5000 644*199767f8SToomas Soome #define SPA_VERSION_STRING "5000" 645*199767f8SToomas Soome 646*199767f8SToomas Soome /* 647*199767f8SToomas Soome * Symbolic names for the changes that caused a SPA_VERSION switch. 648*199767f8SToomas Soome * Used in the code when checking for presence or absence of a feature. 649*199767f8SToomas Soome * Feel free to define multiple symbolic names for each version if there 650*199767f8SToomas Soome * were multiple changes to on-disk structures during that version. 651*199767f8SToomas Soome * 652*199767f8SToomas Soome * NOTE: When checking the current SPA_VERSION in your code, be sure 653*199767f8SToomas Soome * to use spa_version() since it reports the version of the 654*199767f8SToomas Soome * last synced uberblock. Checking the in-flight version can 655*199767f8SToomas Soome * be dangerous in some cases. 656*199767f8SToomas Soome */ 657*199767f8SToomas Soome #define SPA_VERSION_INITIAL SPA_VERSION_1 658*199767f8SToomas Soome #define SPA_VERSION_DITTO_BLOCKS SPA_VERSION_2 659*199767f8SToomas Soome #define SPA_VERSION_SPARES SPA_VERSION_3 660*199767f8SToomas Soome #define SPA_VERSION_RAID6 SPA_VERSION_3 661*199767f8SToomas Soome #define SPA_VERSION_BPLIST_ACCOUNT SPA_VERSION_3 662*199767f8SToomas Soome #define SPA_VERSION_RAIDZ_DEFLATE SPA_VERSION_3 663*199767f8SToomas Soome #define SPA_VERSION_DNODE_BYTES SPA_VERSION_3 664*199767f8SToomas Soome #define SPA_VERSION_ZPOOL_HISTORY SPA_VERSION_4 665*199767f8SToomas Soome #define SPA_VERSION_GZIP_COMPRESSION SPA_VERSION_5 666*199767f8SToomas Soome #define SPA_VERSION_BOOTFS SPA_VERSION_6 667*199767f8SToomas Soome #define SPA_VERSION_SLOGS SPA_VERSION_7 668*199767f8SToomas Soome #define SPA_VERSION_DELEGATED_PERMS SPA_VERSION_8 669*199767f8SToomas Soome #define SPA_VERSION_FUID SPA_VERSION_9 670*199767f8SToomas Soome #define SPA_VERSION_REFRESERVATION SPA_VERSION_9 671*199767f8SToomas Soome #define SPA_VERSION_REFQUOTA SPA_VERSION_9 672*199767f8SToomas Soome #define SPA_VERSION_UNIQUE_ACCURATE SPA_VERSION_9 673*199767f8SToomas Soome #define SPA_VERSION_L2CACHE SPA_VERSION_10 674*199767f8SToomas Soome #define SPA_VERSION_NEXT_CLONES SPA_VERSION_11 675*199767f8SToomas Soome #define SPA_VERSION_ORIGIN SPA_VERSION_11 676*199767f8SToomas Soome #define SPA_VERSION_DSL_SCRUB SPA_VERSION_11 677*199767f8SToomas Soome #define SPA_VERSION_SNAP_PROPS SPA_VERSION_12 678*199767f8SToomas Soome #define SPA_VERSION_USED_BREAKDOWN SPA_VERSION_13 679*199767f8SToomas Soome #define SPA_VERSION_PASSTHROUGH_X SPA_VERSION_14 680*199767f8SToomas Soome #define SPA_VERSION_USERSPACE SPA_VERSION_15 681*199767f8SToomas Soome #define SPA_VERSION_STMF_PROP SPA_VERSION_16 682*199767f8SToomas Soome #define SPA_VERSION_RAIDZ3 SPA_VERSION_17 683*199767f8SToomas Soome #define SPA_VERSION_USERREFS SPA_VERSION_18 684*199767f8SToomas Soome #define SPA_VERSION_HOLES SPA_VERSION_19 685*199767f8SToomas Soome #define SPA_VERSION_ZLE_COMPRESSION SPA_VERSION_20 686*199767f8SToomas Soome #define SPA_VERSION_DEDUP SPA_VERSION_21 687*199767f8SToomas Soome #define SPA_VERSION_RECVD_PROPS SPA_VERSION_22 688*199767f8SToomas Soome #define SPA_VERSION_SLIM_ZIL SPA_VERSION_23 689*199767f8SToomas Soome #define SPA_VERSION_SA SPA_VERSION_24 690*199767f8SToomas Soome #define SPA_VERSION_SCAN SPA_VERSION_25 691*199767f8SToomas Soome #define SPA_VERSION_DIR_CLONES SPA_VERSION_26 692*199767f8SToomas Soome #define SPA_VERSION_DEADLISTS SPA_VERSION_26 693*199767f8SToomas Soome #define SPA_VERSION_FAST_SNAP SPA_VERSION_27 694*199767f8SToomas Soome #define SPA_VERSION_MULTI_REPLACE SPA_VERSION_28 695*199767f8SToomas Soome #define SPA_VERSION_BEFORE_FEATURES SPA_VERSION_28 696*199767f8SToomas Soome #define SPA_VERSION_FEATURES SPA_VERSION_5000 697*199767f8SToomas Soome 698*199767f8SToomas Soome #define SPA_VERSION_IS_SUPPORTED(v) \ 699*199767f8SToomas Soome (((v) >= SPA_VERSION_INITIAL && (v) <= SPA_VERSION_BEFORE_FEATURES) || \ 700*199767f8SToomas Soome ((v) >= SPA_VERSION_FEATURES && (v) <= SPA_VERSION)) 701*199767f8SToomas Soome 702*199767f8SToomas Soome /* 703*199767f8SToomas Soome * The following are configuration names used in the nvlist describing a pool's 704*199767f8SToomas Soome * configuration. 705*199767f8SToomas Soome */ 706*199767f8SToomas Soome #define ZPOOL_CONFIG_VERSION "version" 707*199767f8SToomas Soome #define ZPOOL_CONFIG_POOL_NAME "name" 708*199767f8SToomas Soome #define ZPOOL_CONFIG_POOL_STATE "state" 709*199767f8SToomas Soome #define ZPOOL_CONFIG_POOL_TXG "txg" 710*199767f8SToomas Soome #define ZPOOL_CONFIG_POOL_GUID "pool_guid" 711*199767f8SToomas Soome #define ZPOOL_CONFIG_CREATE_TXG "create_txg" 712*199767f8SToomas Soome #define ZPOOL_CONFIG_TOP_GUID "top_guid" 713*199767f8SToomas Soome #define ZPOOL_CONFIG_VDEV_TREE "vdev_tree" 714*199767f8SToomas Soome #define ZPOOL_CONFIG_TYPE "type" 715*199767f8SToomas Soome #define ZPOOL_CONFIG_CHILDREN "children" 716*199767f8SToomas Soome #define ZPOOL_CONFIG_ID "id" 717*199767f8SToomas Soome #define ZPOOL_CONFIG_GUID "guid" 718*199767f8SToomas Soome #define ZPOOL_CONFIG_PATH "path" 719*199767f8SToomas Soome #define ZPOOL_CONFIG_DEVID "devid" 720*199767f8SToomas Soome #define ZPOOL_CONFIG_PHYS_PATH "phys_path" 721*199767f8SToomas Soome #define ZPOOL_CONFIG_METASLAB_ARRAY "metaslab_array" 722*199767f8SToomas Soome #define ZPOOL_CONFIG_METASLAB_SHIFT "metaslab_shift" 723*199767f8SToomas Soome #define ZPOOL_CONFIG_ASHIFT "ashift" 724*199767f8SToomas Soome #define ZPOOL_CONFIG_ASIZE "asize" 725*199767f8SToomas Soome #define ZPOOL_CONFIG_DTL "DTL" 726*199767f8SToomas Soome #define ZPOOL_CONFIG_STATS "stats" 727*199767f8SToomas Soome #define ZPOOL_CONFIG_WHOLE_DISK "whole_disk" 728*199767f8SToomas Soome #define ZPOOL_CONFIG_ERRCOUNT "error_count" 729*199767f8SToomas Soome #define ZPOOL_CONFIG_NOT_PRESENT "not_present" 730*199767f8SToomas Soome #define ZPOOL_CONFIG_SPARES "spares" 731*199767f8SToomas Soome #define ZPOOL_CONFIG_IS_SPARE "is_spare" 732*199767f8SToomas Soome #define ZPOOL_CONFIG_NPARITY "nparity" 733*199767f8SToomas Soome #define ZPOOL_CONFIG_HOSTID "hostid" 734*199767f8SToomas Soome #define ZPOOL_CONFIG_HOSTNAME "hostname" 735*199767f8SToomas Soome #define ZPOOL_CONFIG_IS_LOG "is_log" 736*199767f8SToomas Soome #define ZPOOL_CONFIG_TIMESTAMP "timestamp" /* not stored on disk */ 737*199767f8SToomas Soome #define ZPOOL_CONFIG_FEATURES_FOR_READ "features_for_read" 738*199767f8SToomas Soome 739*199767f8SToomas Soome /* 740*199767f8SToomas Soome * The persistent vdev state is stored as separate values rather than a single 741*199767f8SToomas Soome * 'vdev_state' entry. This is because a device can be in multiple states, such 742*199767f8SToomas Soome * as offline and degraded. 743*199767f8SToomas Soome */ 744*199767f8SToomas Soome #define ZPOOL_CONFIG_OFFLINE "offline" 745*199767f8SToomas Soome #define ZPOOL_CONFIG_FAULTED "faulted" 746*199767f8SToomas Soome #define ZPOOL_CONFIG_DEGRADED "degraded" 747*199767f8SToomas Soome #define ZPOOL_CONFIG_REMOVED "removed" 748*199767f8SToomas Soome #define ZPOOL_CONFIG_FRU "fru" 749*199767f8SToomas Soome #define ZPOOL_CONFIG_AUX_STATE "aux_state" 750*199767f8SToomas Soome 751*199767f8SToomas Soome #define VDEV_TYPE_ROOT "root" 752*199767f8SToomas Soome #define VDEV_TYPE_MIRROR "mirror" 753*199767f8SToomas Soome #define VDEV_TYPE_REPLACING "replacing" 754*199767f8SToomas Soome #define VDEV_TYPE_RAIDZ "raidz" 755*199767f8SToomas Soome #define VDEV_TYPE_DISK "disk" 756*199767f8SToomas Soome #define VDEV_TYPE_FILE "file" 757*199767f8SToomas Soome #define VDEV_TYPE_MISSING "missing" 758*199767f8SToomas Soome #define VDEV_TYPE_HOLE "hole" 759*199767f8SToomas Soome #define VDEV_TYPE_SPARE "spare" 760*199767f8SToomas Soome #define VDEV_TYPE_LOG "log" 761*199767f8SToomas Soome #define VDEV_TYPE_L2CACHE "l2cache" 762*199767f8SToomas Soome 763*199767f8SToomas Soome /* 764*199767f8SToomas Soome * This is needed in userland to report the minimum necessary device size. 765*199767f8SToomas Soome */ 766*199767f8SToomas Soome #define SPA_MINDEVSIZE (64ULL << 20) 767*199767f8SToomas Soome 768*199767f8SToomas Soome /* 769*199767f8SToomas Soome * The location of the pool configuration repository, shared between kernel and 770*199767f8SToomas Soome * userland. 771*199767f8SToomas Soome */ 772*199767f8SToomas Soome #define ZPOOL_CACHE "/boot/zfs/zpool.cache" 773*199767f8SToomas Soome 774*199767f8SToomas Soome /* 775*199767f8SToomas Soome * vdev states are ordered from least to most healthy. 776*199767f8SToomas Soome * A vdev that's CANT_OPEN or below is considered unusable. 777*199767f8SToomas Soome */ 778*199767f8SToomas Soome typedef enum vdev_state { 779*199767f8SToomas Soome VDEV_STATE_UNKNOWN = 0, /* Uninitialized vdev */ 780*199767f8SToomas Soome VDEV_STATE_CLOSED, /* Not currently open */ 781*199767f8SToomas Soome VDEV_STATE_OFFLINE, /* Not allowed to open */ 782*199767f8SToomas Soome VDEV_STATE_REMOVED, /* Explicitly removed from system */ 783*199767f8SToomas Soome VDEV_STATE_CANT_OPEN, /* Tried to open, but failed */ 784*199767f8SToomas Soome VDEV_STATE_FAULTED, /* External request to fault device */ 785*199767f8SToomas Soome VDEV_STATE_DEGRADED, /* Replicated vdev with unhealthy kids */ 786*199767f8SToomas Soome VDEV_STATE_HEALTHY /* Presumed good */ 787*199767f8SToomas Soome } vdev_state_t; 788*199767f8SToomas Soome 789*199767f8SToomas Soome /* 790*199767f8SToomas Soome * vdev aux states. When a vdev is in the CANT_OPEN state, the aux field 791*199767f8SToomas Soome * of the vdev stats structure uses these constants to distinguish why. 792*199767f8SToomas Soome */ 793*199767f8SToomas Soome typedef enum vdev_aux { 794*199767f8SToomas Soome VDEV_AUX_NONE, /* no error */ 795*199767f8SToomas Soome VDEV_AUX_OPEN_FAILED, /* ldi_open_*() or vn_open() failed */ 796*199767f8SToomas Soome VDEV_AUX_CORRUPT_DATA, /* bad label or disk contents */ 797*199767f8SToomas Soome VDEV_AUX_NO_REPLICAS, /* insufficient number of replicas */ 798*199767f8SToomas Soome VDEV_AUX_BAD_GUID_SUM, /* vdev guid sum doesn't match */ 799*199767f8SToomas Soome VDEV_AUX_TOO_SMALL, /* vdev size is too small */ 800*199767f8SToomas Soome VDEV_AUX_BAD_LABEL, /* the label is OK but invalid */ 801*199767f8SToomas Soome VDEV_AUX_VERSION_NEWER, /* on-disk version is too new */ 802*199767f8SToomas Soome VDEV_AUX_VERSION_OLDER, /* on-disk version is too old */ 803*199767f8SToomas Soome VDEV_AUX_SPARED /* hot spare used in another pool */ 804*199767f8SToomas Soome } vdev_aux_t; 805*199767f8SToomas Soome 806*199767f8SToomas Soome /* 807*199767f8SToomas Soome * pool state. The following states are written to disk as part of the normal 808*199767f8SToomas Soome * SPA lifecycle: ACTIVE, EXPORTED, DESTROYED, SPARE. The remaining states are 809*199767f8SToomas Soome * software abstractions used at various levels to communicate pool state. 810*199767f8SToomas Soome */ 811*199767f8SToomas Soome typedef enum pool_state { 812*199767f8SToomas Soome POOL_STATE_ACTIVE = 0, /* In active use */ 813*199767f8SToomas Soome POOL_STATE_EXPORTED, /* Explicitly exported */ 814*199767f8SToomas Soome POOL_STATE_DESTROYED, /* Explicitly destroyed */ 815*199767f8SToomas Soome POOL_STATE_SPARE, /* Reserved for hot spare use */ 816*199767f8SToomas Soome POOL_STATE_UNINITIALIZED, /* Internal spa_t state */ 817*199767f8SToomas Soome POOL_STATE_UNAVAIL, /* Internal libzfs state */ 818*199767f8SToomas Soome POOL_STATE_POTENTIALLY_ACTIVE /* Internal libzfs state */ 819*199767f8SToomas Soome } pool_state_t; 820*199767f8SToomas Soome 821*199767f8SToomas Soome /* 822*199767f8SToomas Soome * The uberblock version is incremented whenever an incompatible on-disk 823*199767f8SToomas Soome * format change is made to the SPA, DMU, or ZAP. 824*199767f8SToomas Soome * 825*199767f8SToomas Soome * Note: the first two fields should never be moved. When a storage pool 826*199767f8SToomas Soome * is opened, the uberblock must be read off the disk before the version 827*199767f8SToomas Soome * can be checked. If the ub_version field is moved, we may not detect 828*199767f8SToomas Soome * version mismatch. If the ub_magic field is moved, applications that 829*199767f8SToomas Soome * expect the magic number in the first word won't work. 830*199767f8SToomas Soome */ 831*199767f8SToomas Soome #define UBERBLOCK_MAGIC 0x00bab10c /* oo-ba-bloc! */ 832*199767f8SToomas Soome #define UBERBLOCK_SHIFT 10 /* up to 1K */ 833*199767f8SToomas Soome 834*199767f8SToomas Soome struct uberblock { 835*199767f8SToomas Soome uint64_t ub_magic; /* UBERBLOCK_MAGIC */ 836*199767f8SToomas Soome uint64_t ub_version; /* SPA_VERSION */ 837*199767f8SToomas Soome uint64_t ub_txg; /* txg of last sync */ 838*199767f8SToomas Soome uint64_t ub_guid_sum; /* sum of all vdev guids */ 839*199767f8SToomas Soome uint64_t ub_timestamp; /* UTC time of last sync */ 840*199767f8SToomas Soome blkptr_t ub_rootbp; /* MOS objset_phys_t */ 841*199767f8SToomas Soome }; 842*199767f8SToomas Soome 843*199767f8SToomas Soome /* 844*199767f8SToomas Soome * Flags. 845*199767f8SToomas Soome */ 846*199767f8SToomas Soome #define DNODE_MUST_BE_ALLOCATED 1 847*199767f8SToomas Soome #define DNODE_MUST_BE_FREE 2 848*199767f8SToomas Soome 849*199767f8SToomas Soome /* 850*199767f8SToomas Soome * Fixed constants. 851*199767f8SToomas Soome */ 852*199767f8SToomas Soome #define DNODE_SHIFT 9 /* 512 bytes */ 853*199767f8SToomas Soome #define DN_MIN_INDBLKSHIFT 12 /* 4k */ 854*199767f8SToomas Soome #define DN_MAX_INDBLKSHIFT 14 /* 16k */ 855*199767f8SToomas Soome #define DNODE_BLOCK_SHIFT 14 /* 16k */ 856*199767f8SToomas Soome #define DNODE_CORE_SIZE 64 /* 64 bytes for dnode sans blkptrs */ 857*199767f8SToomas Soome #define DN_MAX_OBJECT_SHIFT 48 /* 256 trillion (zfs_fid_t limit) */ 858*199767f8SToomas Soome #define DN_MAX_OFFSET_SHIFT 64 /* 2^64 bytes in a dnode */ 859*199767f8SToomas Soome 860*199767f8SToomas Soome /* 861*199767f8SToomas Soome * Derived constants. 862*199767f8SToomas Soome */ 863*199767f8SToomas Soome #define DNODE_SIZE (1 << DNODE_SHIFT) 864*199767f8SToomas Soome #define DN_MAX_NBLKPTR ((DNODE_SIZE - DNODE_CORE_SIZE) >> SPA_BLKPTRSHIFT) 865*199767f8SToomas Soome #define DN_MAX_BONUSLEN (DNODE_SIZE - DNODE_CORE_SIZE - (1 << SPA_BLKPTRSHIFT)) 866*199767f8SToomas Soome #define DN_MAX_OBJECT (1ULL << DN_MAX_OBJECT_SHIFT) 867*199767f8SToomas Soome 868*199767f8SToomas Soome #define DNODES_PER_BLOCK_SHIFT (DNODE_BLOCK_SHIFT - DNODE_SHIFT) 869*199767f8SToomas Soome #define DNODES_PER_BLOCK (1ULL << DNODES_PER_BLOCK_SHIFT) 870*199767f8SToomas Soome #define DNODES_PER_LEVEL_SHIFT (DN_MAX_INDBLKSHIFT - SPA_BLKPTRSHIFT) 871*199767f8SToomas Soome 872*199767f8SToomas Soome /* The +2 here is a cheesy way to round up */ 873*199767f8SToomas Soome #define DN_MAX_LEVELS (2 + ((DN_MAX_OFFSET_SHIFT - SPA_MINBLOCKSHIFT) / \ 874*199767f8SToomas Soome (DN_MIN_INDBLKSHIFT - SPA_BLKPTRSHIFT))) 875*199767f8SToomas Soome 876*199767f8SToomas Soome #define DN_BONUS(dnp) ((void*)((dnp)->dn_bonus + \ 877*199767f8SToomas Soome (((dnp)->dn_nblkptr - 1) * sizeof (blkptr_t)))) 878*199767f8SToomas Soome 879*199767f8SToomas Soome #define DN_USED_BYTES(dnp) (((dnp)->dn_flags & DNODE_FLAG_USED_BYTES) ? \ 880*199767f8SToomas Soome (dnp)->dn_used : (dnp)->dn_used << SPA_MINBLOCKSHIFT) 881*199767f8SToomas Soome 882*199767f8SToomas Soome #define EPB(blkshift, typeshift) (1 << (blkshift - typeshift)) 883*199767f8SToomas Soome 884*199767f8SToomas Soome /* Is dn_used in bytes? if not, it's in multiples of SPA_MINBLOCKSIZE */ 885*199767f8SToomas Soome #define DNODE_FLAG_USED_BYTES (1<<0) 886*199767f8SToomas Soome #define DNODE_FLAG_USERUSED_ACCOUNTED (1<<1) 887*199767f8SToomas Soome 888*199767f8SToomas Soome /* Does dnode have a SA spill blkptr in bonus? */ 889*199767f8SToomas Soome #define DNODE_FLAG_SPILL_BLKPTR (1<<2) 890*199767f8SToomas Soome 891*199767f8SToomas Soome typedef struct dnode_phys { 892*199767f8SToomas Soome uint8_t dn_type; /* dmu_object_type_t */ 893*199767f8SToomas Soome uint8_t dn_indblkshift; /* ln2(indirect block size) */ 894*199767f8SToomas Soome uint8_t dn_nlevels; /* 1=dn_blkptr->data blocks */ 895*199767f8SToomas Soome uint8_t dn_nblkptr; /* length of dn_blkptr */ 896*199767f8SToomas Soome uint8_t dn_bonustype; /* type of data in bonus buffer */ 897*199767f8SToomas Soome uint8_t dn_checksum; /* ZIO_CHECKSUM type */ 898*199767f8SToomas Soome uint8_t dn_compress; /* ZIO_COMPRESS type */ 899*199767f8SToomas Soome uint8_t dn_flags; /* DNODE_FLAG_* */ 900*199767f8SToomas Soome uint16_t dn_datablkszsec; /* data block size in 512b sectors */ 901*199767f8SToomas Soome uint16_t dn_bonuslen; /* length of dn_bonus */ 902*199767f8SToomas Soome uint8_t dn_pad2[4]; 903*199767f8SToomas Soome 904*199767f8SToomas Soome /* accounting is protected by dn_dirty_mtx */ 905*199767f8SToomas Soome uint64_t dn_maxblkid; /* largest allocated block ID */ 906*199767f8SToomas Soome uint64_t dn_used; /* bytes (or sectors) of disk space */ 907*199767f8SToomas Soome 908*199767f8SToomas Soome uint64_t dn_pad3[4]; 909*199767f8SToomas Soome 910*199767f8SToomas Soome blkptr_t dn_blkptr[1]; 911*199767f8SToomas Soome uint8_t dn_bonus[DN_MAX_BONUSLEN - sizeof (blkptr_t)]; 912*199767f8SToomas Soome blkptr_t dn_spill; 913*199767f8SToomas Soome } dnode_phys_t; 914*199767f8SToomas Soome 915*199767f8SToomas Soome typedef enum dmu_object_byteswap { 916*199767f8SToomas Soome DMU_BSWAP_UINT8, 917*199767f8SToomas Soome DMU_BSWAP_UINT16, 918*199767f8SToomas Soome DMU_BSWAP_UINT32, 919*199767f8SToomas Soome DMU_BSWAP_UINT64, 920*199767f8SToomas Soome DMU_BSWAP_ZAP, 921*199767f8SToomas Soome DMU_BSWAP_DNODE, 922*199767f8SToomas Soome DMU_BSWAP_OBJSET, 923*199767f8SToomas Soome DMU_BSWAP_ZNODE, 924*199767f8SToomas Soome DMU_BSWAP_OLDACL, 925*199767f8SToomas Soome DMU_BSWAP_ACL, 926*199767f8SToomas Soome /* 927*199767f8SToomas Soome * Allocating a new byteswap type number makes the on-disk format 928*199767f8SToomas Soome * incompatible with any other format that uses the same number. 929*199767f8SToomas Soome * 930*199767f8SToomas Soome * Data can usually be structured to work with one of the 931*199767f8SToomas Soome * DMU_BSWAP_UINT* or DMU_BSWAP_ZAP types. 932*199767f8SToomas Soome */ 933*199767f8SToomas Soome DMU_BSWAP_NUMFUNCS 934*199767f8SToomas Soome } dmu_object_byteswap_t; 935*199767f8SToomas Soome 936*199767f8SToomas Soome #define DMU_OT_NEWTYPE 0x80 937*199767f8SToomas Soome #define DMU_OT_METADATA 0x40 938*199767f8SToomas Soome #define DMU_OT_BYTESWAP_MASK 0x3f 939*199767f8SToomas Soome 940*199767f8SToomas Soome /* 941*199767f8SToomas Soome * Defines a uint8_t object type. Object types specify if the data 942*199767f8SToomas Soome * in the object is metadata (boolean) and how to byteswap the data 943*199767f8SToomas Soome * (dmu_object_byteswap_t). 944*199767f8SToomas Soome */ 945*199767f8SToomas Soome #define DMU_OT(byteswap, metadata) \ 946*199767f8SToomas Soome (DMU_OT_NEWTYPE | \ 947*199767f8SToomas Soome ((metadata) ? DMU_OT_METADATA : 0) | \ 948*199767f8SToomas Soome ((byteswap) & DMU_OT_BYTESWAP_MASK)) 949*199767f8SToomas Soome 950*199767f8SToomas Soome typedef enum dmu_object_type { 951*199767f8SToomas Soome DMU_OT_NONE, 952*199767f8SToomas Soome /* general: */ 953*199767f8SToomas Soome DMU_OT_OBJECT_DIRECTORY, /* ZAP */ 954*199767f8SToomas Soome DMU_OT_OBJECT_ARRAY, /* UINT64 */ 955*199767f8SToomas Soome DMU_OT_PACKED_NVLIST, /* UINT8 (XDR by nvlist_pack/unpack) */ 956*199767f8SToomas Soome DMU_OT_PACKED_NVLIST_SIZE, /* UINT64 */ 957*199767f8SToomas Soome DMU_OT_BPLIST, /* UINT64 */ 958*199767f8SToomas Soome DMU_OT_BPLIST_HDR, /* UINT64 */ 959*199767f8SToomas Soome /* spa: */ 960*199767f8SToomas Soome DMU_OT_SPACE_MAP_HEADER, /* UINT64 */ 961*199767f8SToomas Soome DMU_OT_SPACE_MAP, /* UINT64 */ 962*199767f8SToomas Soome /* zil: */ 963*199767f8SToomas Soome DMU_OT_INTENT_LOG, /* UINT64 */ 964*199767f8SToomas Soome /* dmu: */ 965*199767f8SToomas Soome DMU_OT_DNODE, /* DNODE */ 966*199767f8SToomas Soome DMU_OT_OBJSET, /* OBJSET */ 967*199767f8SToomas Soome /* dsl: */ 968*199767f8SToomas Soome DMU_OT_DSL_DIR, /* UINT64 */ 969*199767f8SToomas Soome DMU_OT_DSL_DIR_CHILD_MAP, /* ZAP */ 970*199767f8SToomas Soome DMU_OT_DSL_DS_SNAP_MAP, /* ZAP */ 971*199767f8SToomas Soome DMU_OT_DSL_PROPS, /* ZAP */ 972*199767f8SToomas Soome DMU_OT_DSL_DATASET, /* UINT64 */ 973*199767f8SToomas Soome /* zpl: */ 974*199767f8SToomas Soome DMU_OT_ZNODE, /* ZNODE */ 975*199767f8SToomas Soome DMU_OT_OLDACL, /* Old ACL */ 976*199767f8SToomas Soome DMU_OT_PLAIN_FILE_CONTENTS, /* UINT8 */ 977*199767f8SToomas Soome DMU_OT_DIRECTORY_CONTENTS, /* ZAP */ 978*199767f8SToomas Soome DMU_OT_MASTER_NODE, /* ZAP */ 979*199767f8SToomas Soome DMU_OT_UNLINKED_SET, /* ZAP */ 980*199767f8SToomas Soome /* zvol: */ 981*199767f8SToomas Soome DMU_OT_ZVOL, /* UINT8 */ 982*199767f8SToomas Soome DMU_OT_ZVOL_PROP, /* ZAP */ 983*199767f8SToomas Soome /* other; for testing only! */ 984*199767f8SToomas Soome DMU_OT_PLAIN_OTHER, /* UINT8 */ 985*199767f8SToomas Soome DMU_OT_UINT64_OTHER, /* UINT64 */ 986*199767f8SToomas Soome DMU_OT_ZAP_OTHER, /* ZAP */ 987*199767f8SToomas Soome /* new object types: */ 988*199767f8SToomas Soome DMU_OT_ERROR_LOG, /* ZAP */ 989*199767f8SToomas Soome DMU_OT_SPA_HISTORY, /* UINT8 */ 990*199767f8SToomas Soome DMU_OT_SPA_HISTORY_OFFSETS, /* spa_his_phys_t */ 991*199767f8SToomas Soome DMU_OT_POOL_PROPS, /* ZAP */ 992*199767f8SToomas Soome DMU_OT_DSL_PERMS, /* ZAP */ 993*199767f8SToomas Soome DMU_OT_ACL, /* ACL */ 994*199767f8SToomas Soome DMU_OT_SYSACL, /* SYSACL */ 995*199767f8SToomas Soome DMU_OT_FUID, /* FUID table (Packed NVLIST UINT8) */ 996*199767f8SToomas Soome DMU_OT_FUID_SIZE, /* FUID table size UINT64 */ 997*199767f8SToomas Soome DMU_OT_NEXT_CLONES, /* ZAP */ 998*199767f8SToomas Soome DMU_OT_SCAN_QUEUE, /* ZAP */ 999*199767f8SToomas Soome DMU_OT_USERGROUP_USED, /* ZAP */ 1000*199767f8SToomas Soome DMU_OT_USERGROUP_QUOTA, /* ZAP */ 1001*199767f8SToomas Soome DMU_OT_USERREFS, /* ZAP */ 1002*199767f8SToomas Soome DMU_OT_DDT_ZAP, /* ZAP */ 1003*199767f8SToomas Soome DMU_OT_DDT_STATS, /* ZAP */ 1004*199767f8SToomas Soome DMU_OT_SA, /* System attr */ 1005*199767f8SToomas Soome DMU_OT_SA_MASTER_NODE, /* ZAP */ 1006*199767f8SToomas Soome DMU_OT_SA_ATTR_REGISTRATION, /* ZAP */ 1007*199767f8SToomas Soome DMU_OT_SA_ATTR_LAYOUTS, /* ZAP */ 1008*199767f8SToomas Soome DMU_OT_SCAN_XLATE, /* ZAP */ 1009*199767f8SToomas Soome DMU_OT_DEDUP, /* fake dedup BP from ddt_bp_create() */ 1010*199767f8SToomas Soome DMU_OT_NUMTYPES, 1011*199767f8SToomas Soome 1012*199767f8SToomas Soome /* 1013*199767f8SToomas Soome * Names for valid types declared with DMU_OT(). 1014*199767f8SToomas Soome */ 1015*199767f8SToomas Soome DMU_OTN_UINT8_DATA = DMU_OT(DMU_BSWAP_UINT8, B_FALSE), 1016*199767f8SToomas Soome DMU_OTN_UINT8_METADATA = DMU_OT(DMU_BSWAP_UINT8, B_TRUE), 1017*199767f8SToomas Soome DMU_OTN_UINT16_DATA = DMU_OT(DMU_BSWAP_UINT16, B_FALSE), 1018*199767f8SToomas Soome DMU_OTN_UINT16_METADATA = DMU_OT(DMU_BSWAP_UINT16, B_TRUE), 1019*199767f8SToomas Soome DMU_OTN_UINT32_DATA = DMU_OT(DMU_BSWAP_UINT32, B_FALSE), 1020*199767f8SToomas Soome DMU_OTN_UINT32_METADATA = DMU_OT(DMU_BSWAP_UINT32, B_TRUE), 1021*199767f8SToomas Soome DMU_OTN_UINT64_DATA = DMU_OT(DMU_BSWAP_UINT64, B_FALSE), 1022*199767f8SToomas Soome DMU_OTN_UINT64_METADATA = DMU_OT(DMU_BSWAP_UINT64, B_TRUE), 1023*199767f8SToomas Soome DMU_OTN_ZAP_DATA = DMU_OT(DMU_BSWAP_ZAP, B_FALSE), 1024*199767f8SToomas Soome DMU_OTN_ZAP_METADATA = DMU_OT(DMU_BSWAP_ZAP, B_TRUE) 1025*199767f8SToomas Soome } dmu_object_type_t; 1026*199767f8SToomas Soome 1027*199767f8SToomas Soome typedef enum dmu_objset_type { 1028*199767f8SToomas Soome DMU_OST_NONE, 1029*199767f8SToomas Soome DMU_OST_META, 1030*199767f8SToomas Soome DMU_OST_ZFS, 1031*199767f8SToomas Soome DMU_OST_ZVOL, 1032*199767f8SToomas Soome DMU_OST_OTHER, /* For testing only! */ 1033*199767f8SToomas Soome DMU_OST_ANY, /* Be careful! */ 1034*199767f8SToomas Soome DMU_OST_NUMTYPES 1035*199767f8SToomas Soome } dmu_objset_type_t; 1036*199767f8SToomas Soome 1037*199767f8SToomas Soome /* 1038*199767f8SToomas Soome * header for all bonus and spill buffers. 1039*199767f8SToomas Soome * The header has a fixed portion with a variable number 1040*199767f8SToomas Soome * of "lengths" depending on the number of variable sized 1041*199767f8SToomas Soome * attribues which are determined by the "layout number" 1042*199767f8SToomas Soome */ 1043*199767f8SToomas Soome 1044*199767f8SToomas Soome #define SA_MAGIC 0x2F505A /* ZFS SA */ 1045*199767f8SToomas Soome typedef struct sa_hdr_phys { 1046*199767f8SToomas Soome uint32_t sa_magic; 1047*199767f8SToomas Soome uint16_t sa_layout_info; /* Encoded with hdrsize and layout number */ 1048*199767f8SToomas Soome uint16_t sa_lengths[1]; /* optional sizes for variable length attrs */ 1049*199767f8SToomas Soome /* ... Data follows the lengths. */ 1050*199767f8SToomas Soome } sa_hdr_phys_t; 1051*199767f8SToomas Soome 1052*199767f8SToomas Soome /* 1053*199767f8SToomas Soome * sa_hdr_phys -> sa_layout_info 1054*199767f8SToomas Soome * 1055*199767f8SToomas Soome * 16 10 0 1056*199767f8SToomas Soome * +--------+-------+ 1057*199767f8SToomas Soome * | hdrsz |layout | 1058*199767f8SToomas Soome * +--------+-------+ 1059*199767f8SToomas Soome * 1060*199767f8SToomas Soome * Bits 0-10 are the layout number 1061*199767f8SToomas Soome * Bits 11-16 are the size of the header. 1062*199767f8SToomas Soome * The hdrsize is the number * 8 1063*199767f8SToomas Soome * 1064*199767f8SToomas Soome * For example. 1065*199767f8SToomas Soome * hdrsz of 1 ==> 8 byte header 1066*199767f8SToomas Soome * 2 ==> 16 byte header 1067*199767f8SToomas Soome * 1068*199767f8SToomas Soome */ 1069*199767f8SToomas Soome 1070*199767f8SToomas Soome #define SA_HDR_LAYOUT_NUM(hdr) BF32_GET(hdr->sa_layout_info, 0, 10) 1071*199767f8SToomas Soome #define SA_HDR_SIZE(hdr) BF32_GET_SB(hdr->sa_layout_info, 10, 16, 3, 0) 1072*199767f8SToomas Soome #define SA_HDR_LAYOUT_INFO_ENCODE(x, num, size) \ 1073*199767f8SToomas Soome { \ 1074*199767f8SToomas Soome BF32_SET_SB(x, 10, 6, 3, 0, size); \ 1075*199767f8SToomas Soome BF32_SET(x, 0, 10, num); \ 1076*199767f8SToomas Soome } 1077*199767f8SToomas Soome 1078*199767f8SToomas Soome #define SA_MODE_OFFSET 0 1079*199767f8SToomas Soome #define SA_SIZE_OFFSET 8 1080*199767f8SToomas Soome #define SA_GEN_OFFSET 16 1081*199767f8SToomas Soome #define SA_UID_OFFSET 24 1082*199767f8SToomas Soome #define SA_GID_OFFSET 32 1083*199767f8SToomas Soome #define SA_PARENT_OFFSET 40 1084*199767f8SToomas Soome 1085*199767f8SToomas Soome /* 1086*199767f8SToomas Soome * Intent log header - this on disk structure holds fields to manage 1087*199767f8SToomas Soome * the log. All fields are 64 bit to easily handle cross architectures. 1088*199767f8SToomas Soome */ 1089*199767f8SToomas Soome typedef struct zil_header { 1090*199767f8SToomas Soome uint64_t zh_claim_txg; /* txg in which log blocks were claimed */ 1091*199767f8SToomas Soome uint64_t zh_replay_seq; /* highest replayed sequence number */ 1092*199767f8SToomas Soome blkptr_t zh_log; /* log chain */ 1093*199767f8SToomas Soome uint64_t zh_claim_seq; /* highest claimed sequence number */ 1094*199767f8SToomas Soome uint64_t zh_pad[5]; 1095*199767f8SToomas Soome } zil_header_t; 1096*199767f8SToomas Soome 1097*199767f8SToomas Soome #define OBJSET_PHYS_SIZE 2048 1098*199767f8SToomas Soome 1099*199767f8SToomas Soome typedef struct objset_phys { 1100*199767f8SToomas Soome dnode_phys_t os_meta_dnode; 1101*199767f8SToomas Soome zil_header_t os_zil_header; 1102*199767f8SToomas Soome uint64_t os_type; 1103*199767f8SToomas Soome uint64_t os_flags; 1104*199767f8SToomas Soome char os_pad[OBJSET_PHYS_SIZE - sizeof (dnode_phys_t)*3 - 1105*199767f8SToomas Soome sizeof (zil_header_t) - sizeof (uint64_t)*2]; 1106*199767f8SToomas Soome dnode_phys_t os_userused_dnode; 1107*199767f8SToomas Soome dnode_phys_t os_groupused_dnode; 1108*199767f8SToomas Soome } objset_phys_t; 1109*199767f8SToomas Soome 1110*199767f8SToomas Soome typedef struct dsl_dir_phys { 1111*199767f8SToomas Soome uint64_t dd_creation_time; /* not actually used */ 1112*199767f8SToomas Soome uint64_t dd_head_dataset_obj; 1113*199767f8SToomas Soome uint64_t dd_parent_obj; 1114*199767f8SToomas Soome uint64_t dd_clone_parent_obj; 1115*199767f8SToomas Soome uint64_t dd_child_dir_zapobj; 1116*199767f8SToomas Soome /* 1117*199767f8SToomas Soome * how much space our children are accounting for; for leaf 1118*199767f8SToomas Soome * datasets, == physical space used by fs + snaps 1119*199767f8SToomas Soome */ 1120*199767f8SToomas Soome uint64_t dd_used_bytes; 1121*199767f8SToomas Soome uint64_t dd_compressed_bytes; 1122*199767f8SToomas Soome uint64_t dd_uncompressed_bytes; 1123*199767f8SToomas Soome /* Administrative quota setting */ 1124*199767f8SToomas Soome uint64_t dd_quota; 1125*199767f8SToomas Soome /* Administrative reservation setting */ 1126*199767f8SToomas Soome uint64_t dd_reserved; 1127*199767f8SToomas Soome uint64_t dd_props_zapobj; 1128*199767f8SToomas Soome uint64_t dd_pad[21]; /* pad out to 256 bytes for good measure */ 1129*199767f8SToomas Soome } dsl_dir_phys_t; 1130*199767f8SToomas Soome 1131*199767f8SToomas Soome typedef struct dsl_dataset_phys { 1132*199767f8SToomas Soome uint64_t ds_dir_obj; 1133*199767f8SToomas Soome uint64_t ds_prev_snap_obj; 1134*199767f8SToomas Soome uint64_t ds_prev_snap_txg; 1135*199767f8SToomas Soome uint64_t ds_next_snap_obj; 1136*199767f8SToomas Soome uint64_t ds_snapnames_zapobj; /* zap obj of snaps; ==0 for snaps */ 1137*199767f8SToomas Soome uint64_t ds_num_children; /* clone/snap children; ==0 for head */ 1138*199767f8SToomas Soome uint64_t ds_creation_time; /* seconds since 1970 */ 1139*199767f8SToomas Soome uint64_t ds_creation_txg; 1140*199767f8SToomas Soome uint64_t ds_deadlist_obj; 1141*199767f8SToomas Soome uint64_t ds_used_bytes; 1142*199767f8SToomas Soome uint64_t ds_compressed_bytes; 1143*199767f8SToomas Soome uint64_t ds_uncompressed_bytes; 1144*199767f8SToomas Soome uint64_t ds_unique_bytes; /* only relevant to snapshots */ 1145*199767f8SToomas Soome /* 1146*199767f8SToomas Soome * The ds_fsid_guid is a 56-bit ID that can change to avoid 1147*199767f8SToomas Soome * collisions. The ds_guid is a 64-bit ID that will never 1148*199767f8SToomas Soome * change, so there is a small probability that it will collide. 1149*199767f8SToomas Soome */ 1150*199767f8SToomas Soome uint64_t ds_fsid_guid; 1151*199767f8SToomas Soome uint64_t ds_guid; 1152*199767f8SToomas Soome uint64_t ds_flags; 1153*199767f8SToomas Soome blkptr_t ds_bp; 1154*199767f8SToomas Soome uint64_t ds_pad[8]; /* pad out to 320 bytes for good measure */ 1155*199767f8SToomas Soome } dsl_dataset_phys_t; 1156*199767f8SToomas Soome 1157*199767f8SToomas Soome /* 1158*199767f8SToomas Soome * The names of zap entries in the DIRECTORY_OBJECT of the MOS. 1159*199767f8SToomas Soome */ 1160*199767f8SToomas Soome #define DMU_POOL_DIRECTORY_OBJECT 1 1161*199767f8SToomas Soome #define DMU_POOL_CONFIG "config" 1162*199767f8SToomas Soome #define DMU_POOL_FEATURES_FOR_READ "features_for_read" 1163*199767f8SToomas Soome #define DMU_POOL_ROOT_DATASET "root_dataset" 1164*199767f8SToomas Soome #define DMU_POOL_SYNC_BPLIST "sync_bplist" 1165*199767f8SToomas Soome #define DMU_POOL_ERRLOG_SCRUB "errlog_scrub" 1166*199767f8SToomas Soome #define DMU_POOL_ERRLOG_LAST "errlog_last" 1167*199767f8SToomas Soome #define DMU_POOL_SPARES "spares" 1168*199767f8SToomas Soome #define DMU_POOL_DEFLATE "deflate" 1169*199767f8SToomas Soome #define DMU_POOL_HISTORY "history" 1170*199767f8SToomas Soome #define DMU_POOL_PROPS "pool_props" 1171*199767f8SToomas Soome 1172*199767f8SToomas Soome #define ZAP_MAGIC 0x2F52AB2ABULL 1173*199767f8SToomas Soome 1174*199767f8SToomas Soome #define FZAP_BLOCK_SHIFT(zap) ((zap)->zap_block_shift) 1175*199767f8SToomas Soome 1176*199767f8SToomas Soome #define ZAP_MAXCD (uint32_t)(-1) 1177*199767f8SToomas Soome #define ZAP_HASHBITS 28 1178*199767f8SToomas Soome #define MZAP_ENT_LEN 64 1179*199767f8SToomas Soome #define MZAP_NAME_LEN (MZAP_ENT_LEN - 8 - 4 - 2) 1180*199767f8SToomas Soome #define MZAP_MAX_BLKSHIFT SPA_MAXBLOCKSHIFT 1181*199767f8SToomas Soome #define MZAP_MAX_BLKSZ (1 << MZAP_MAX_BLKSHIFT) 1182*199767f8SToomas Soome 1183*199767f8SToomas Soome typedef struct mzap_ent_phys { 1184*199767f8SToomas Soome uint64_t mze_value; 1185*199767f8SToomas Soome uint32_t mze_cd; 1186*199767f8SToomas Soome uint16_t mze_pad; /* in case we want to chain them someday */ 1187*199767f8SToomas Soome char mze_name[MZAP_NAME_LEN]; 1188*199767f8SToomas Soome } mzap_ent_phys_t; 1189*199767f8SToomas Soome 1190*199767f8SToomas Soome typedef struct mzap_phys { 1191*199767f8SToomas Soome uint64_t mz_block_type; /* ZBT_MICRO */ 1192*199767f8SToomas Soome uint64_t mz_salt; 1193*199767f8SToomas Soome uint64_t mz_pad[6]; 1194*199767f8SToomas Soome mzap_ent_phys_t mz_chunk[1]; 1195*199767f8SToomas Soome /* actually variable size depending on block size */ 1196*199767f8SToomas Soome } mzap_phys_t; 1197*199767f8SToomas Soome 1198*199767f8SToomas Soome /* 1199*199767f8SToomas Soome * The (fat) zap is stored in one object. It is an array of 1200*199767f8SToomas Soome * 1<<FZAP_BLOCK_SHIFT byte blocks. The layout looks like one of: 1201*199767f8SToomas Soome * 1202*199767f8SToomas Soome * ptrtbl fits in first block: 1203*199767f8SToomas Soome * [zap_phys_t zap_ptrtbl_shift < 6] [zap_leaf_t] ... 1204*199767f8SToomas Soome * 1205*199767f8SToomas Soome * ptrtbl too big for first block: 1206*199767f8SToomas Soome * [zap_phys_t zap_ptrtbl_shift >= 6] [zap_leaf_t] [ptrtbl] ... 1207*199767f8SToomas Soome * 1208*199767f8SToomas Soome */ 1209*199767f8SToomas Soome 1210*199767f8SToomas Soome #define ZBT_LEAF ((1ULL << 63) + 0) 1211*199767f8SToomas Soome #define ZBT_HEADER ((1ULL << 63) + 1) 1212*199767f8SToomas Soome #define ZBT_MICRO ((1ULL << 63) + 3) 1213*199767f8SToomas Soome /* any other values are ptrtbl blocks */ 1214*199767f8SToomas Soome 1215*199767f8SToomas Soome /* 1216*199767f8SToomas Soome * the embedded pointer table takes up half a block: 1217*199767f8SToomas Soome * block size / entry size (2^3) / 2 1218*199767f8SToomas Soome */ 1219*199767f8SToomas Soome #define ZAP_EMBEDDED_PTRTBL_SHIFT(zap) (FZAP_BLOCK_SHIFT(zap) - 3 - 1) 1220*199767f8SToomas Soome 1221*199767f8SToomas Soome /* 1222*199767f8SToomas Soome * The embedded pointer table starts half-way through the block. Since 1223*199767f8SToomas Soome * the pointer table itself is half the block, it starts at (64-bit) 1224*199767f8SToomas Soome * word number (1<<ZAP_EMBEDDED_PTRTBL_SHIFT(zap)). 1225*199767f8SToomas Soome */ 1226*199767f8SToomas Soome #define ZAP_EMBEDDED_PTRTBL_ENT(zap, idx) \ 1227*199767f8SToomas Soome ((uint64_t *)(zap)->zap_phys) \ 1228*199767f8SToomas Soome [(idx) + (1<<ZAP_EMBEDDED_PTRTBL_SHIFT(zap))] 1229*199767f8SToomas Soome 1230*199767f8SToomas Soome /* 1231*199767f8SToomas Soome * TAKE NOTE: 1232*199767f8SToomas Soome * If zap_phys_t is modified, zap_byteswap() must be modified. 1233*199767f8SToomas Soome */ 1234*199767f8SToomas Soome typedef struct zap_phys { 1235*199767f8SToomas Soome uint64_t zap_block_type; /* ZBT_HEADER */ 1236*199767f8SToomas Soome uint64_t zap_magic; /* ZAP_MAGIC */ 1237*199767f8SToomas Soome 1238*199767f8SToomas Soome struct zap_table_phys { 1239*199767f8SToomas Soome uint64_t zt_blk; /* starting block number */ 1240*199767f8SToomas Soome uint64_t zt_numblks; /* number of blocks */ 1241*199767f8SToomas Soome uint64_t zt_shift; /* bits to index it */ 1242*199767f8SToomas Soome uint64_t zt_nextblk; /* next (larger) copy start block */ 1243*199767f8SToomas Soome uint64_t zt_blks_copied; /* number source blocks copied */ 1244*199767f8SToomas Soome } zap_ptrtbl; 1245*199767f8SToomas Soome 1246*199767f8SToomas Soome uint64_t zap_freeblk; /* the next free block */ 1247*199767f8SToomas Soome uint64_t zap_num_leafs; /* number of leafs */ 1248*199767f8SToomas Soome uint64_t zap_num_entries; /* number of entries */ 1249*199767f8SToomas Soome uint64_t zap_salt; /* salt to stir into hash function */ 1250*199767f8SToomas Soome /* 1251*199767f8SToomas Soome * This structure is followed by padding, and then the embedded 1252*199767f8SToomas Soome * pointer table. The embedded pointer table takes up second 1253*199767f8SToomas Soome * half of the block. It is accessed using the 1254*199767f8SToomas Soome * ZAP_EMBEDDED_PTRTBL_ENT() macro. 1255*199767f8SToomas Soome */ 1256*199767f8SToomas Soome } zap_phys_t; 1257*199767f8SToomas Soome 1258*199767f8SToomas Soome typedef struct zap_table_phys zap_table_phys_t; 1259*199767f8SToomas Soome 1260*199767f8SToomas Soome typedef struct fat_zap { 1261*199767f8SToomas Soome int zap_block_shift; /* block size shift */ 1262*199767f8SToomas Soome zap_phys_t *zap_phys; 1263*199767f8SToomas Soome } fat_zap_t; 1264*199767f8SToomas Soome 1265*199767f8SToomas Soome #define ZAP_LEAF_MAGIC 0x2AB1EAF 1266*199767f8SToomas Soome 1267*199767f8SToomas Soome /* chunk size = 24 bytes */ 1268*199767f8SToomas Soome #define ZAP_LEAF_CHUNKSIZE 24 1269*199767f8SToomas Soome 1270*199767f8SToomas Soome /* 1271*199767f8SToomas Soome * The amount of space available for chunks is: 1272*199767f8SToomas Soome * block size (1<<l->l_bs) - hash entry size (2) * number of hash 1273*199767f8SToomas Soome * entries - header space (2*chunksize) 1274*199767f8SToomas Soome */ 1275*199767f8SToomas Soome #define ZAP_LEAF_NUMCHUNKS(l) \ 1276*199767f8SToomas Soome (((1<<(l)->l_bs) - 2*ZAP_LEAF_HASH_NUMENTRIES(l)) / \ 1277*199767f8SToomas Soome ZAP_LEAF_CHUNKSIZE - 2) 1278*199767f8SToomas Soome 1279*199767f8SToomas Soome /* 1280*199767f8SToomas Soome * The amount of space within the chunk available for the array is: 1281*199767f8SToomas Soome * chunk size - space for type (1) - space for next pointer (2) 1282*199767f8SToomas Soome */ 1283*199767f8SToomas Soome #define ZAP_LEAF_ARRAY_BYTES (ZAP_LEAF_CHUNKSIZE - 3) 1284*199767f8SToomas Soome 1285*199767f8SToomas Soome #define ZAP_LEAF_ARRAY_NCHUNKS(bytes) \ 1286*199767f8SToomas Soome (((bytes)+ZAP_LEAF_ARRAY_BYTES-1)/ZAP_LEAF_ARRAY_BYTES) 1287*199767f8SToomas Soome 1288*199767f8SToomas Soome /* 1289*199767f8SToomas Soome * Low water mark: when there are only this many chunks free, start 1290*199767f8SToomas Soome * growing the ptrtbl. Ideally, this should be larger than a 1291*199767f8SToomas Soome * "reasonably-sized" entry. 20 chunks is more than enough for the 1292*199767f8SToomas Soome * largest directory entry (MAXNAMELEN (256) byte name, 8-byte value), 1293*199767f8SToomas Soome * while still being only around 3% for 16k blocks. 1294*199767f8SToomas Soome */ 1295*199767f8SToomas Soome #define ZAP_LEAF_LOW_WATER (20) 1296*199767f8SToomas Soome 1297*199767f8SToomas Soome /* 1298*199767f8SToomas Soome * The leaf hash table has block size / 2^5 (32) number of entries, 1299*199767f8SToomas Soome * which should be more than enough for the maximum number of entries, 1300*199767f8SToomas Soome * which is less than block size / CHUNKSIZE (24) / minimum number of 1301*199767f8SToomas Soome * chunks per entry (3). 1302*199767f8SToomas Soome */ 1303*199767f8SToomas Soome #define ZAP_LEAF_HASH_SHIFT(l) ((l)->l_bs - 5) 1304*199767f8SToomas Soome #define ZAP_LEAF_HASH_NUMENTRIES(l) (1 << ZAP_LEAF_HASH_SHIFT(l)) 1305*199767f8SToomas Soome 1306*199767f8SToomas Soome /* 1307*199767f8SToomas Soome * The chunks start immediately after the hash table. The end of the 1308*199767f8SToomas Soome * hash table is at l_hash + HASH_NUMENTRIES, which we simply cast to a 1309*199767f8SToomas Soome * chunk_t. 1310*199767f8SToomas Soome */ 1311*199767f8SToomas Soome #define ZAP_LEAF_CHUNK(l, idx) \ 1312*199767f8SToomas Soome ((zap_leaf_chunk_t *) \ 1313*199767f8SToomas Soome ((l)->l_phys->l_hash + ZAP_LEAF_HASH_NUMENTRIES(l)))[idx] 1314*199767f8SToomas Soome #define ZAP_LEAF_ENTRY(l, idx) (&ZAP_LEAF_CHUNK(l, idx).l_entry) 1315*199767f8SToomas Soome 1316*199767f8SToomas Soome typedef enum zap_chunk_type { 1317*199767f8SToomas Soome ZAP_CHUNK_FREE = 253, 1318*199767f8SToomas Soome ZAP_CHUNK_ENTRY = 252, 1319*199767f8SToomas Soome ZAP_CHUNK_ARRAY = 251, 1320*199767f8SToomas Soome ZAP_CHUNK_TYPE_MAX = 250 1321*199767f8SToomas Soome } zap_chunk_type_t; 1322*199767f8SToomas Soome 1323*199767f8SToomas Soome /* 1324*199767f8SToomas Soome * TAKE NOTE: 1325*199767f8SToomas Soome * If zap_leaf_phys_t is modified, zap_leaf_byteswap() must be modified. 1326*199767f8SToomas Soome */ 1327*199767f8SToomas Soome typedef struct zap_leaf_phys { 1328*199767f8SToomas Soome struct zap_leaf_header { 1329*199767f8SToomas Soome uint64_t lh_block_type; /* ZBT_LEAF */ 1330*199767f8SToomas Soome uint64_t lh_pad1; 1331*199767f8SToomas Soome uint64_t lh_prefix; /* hash prefix of this leaf */ 1332*199767f8SToomas Soome uint32_t lh_magic; /* ZAP_LEAF_MAGIC */ 1333*199767f8SToomas Soome uint16_t lh_nfree; /* number free chunks */ 1334*199767f8SToomas Soome uint16_t lh_nentries; /* number of entries */ 1335*199767f8SToomas Soome uint16_t lh_prefix_len; /* num bits used to id this */ 1336*199767f8SToomas Soome 1337*199767f8SToomas Soome /* above is accessable to zap, below is zap_leaf private */ 1338*199767f8SToomas Soome 1339*199767f8SToomas Soome uint16_t lh_freelist; /* chunk head of free list */ 1340*199767f8SToomas Soome uint8_t lh_pad2[12]; 1341*199767f8SToomas Soome } l_hdr; /* 2 24-byte chunks */ 1342*199767f8SToomas Soome 1343*199767f8SToomas Soome /* 1344*199767f8SToomas Soome * The header is followed by a hash table with 1345*199767f8SToomas Soome * ZAP_LEAF_HASH_NUMENTRIES(zap) entries. The hash table is 1346*199767f8SToomas Soome * followed by an array of ZAP_LEAF_NUMCHUNKS(zap) 1347*199767f8SToomas Soome * zap_leaf_chunk structures. These structures are accessed 1348*199767f8SToomas Soome * with the ZAP_LEAF_CHUNK() macro. 1349*199767f8SToomas Soome */ 1350*199767f8SToomas Soome 1351*199767f8SToomas Soome uint16_t l_hash[1]; 1352*199767f8SToomas Soome } zap_leaf_phys_t; 1353*199767f8SToomas Soome 1354*199767f8SToomas Soome typedef union zap_leaf_chunk { 1355*199767f8SToomas Soome struct zap_leaf_entry { 1356*199767f8SToomas Soome uint8_t le_type; /* always ZAP_CHUNK_ENTRY */ 1357*199767f8SToomas Soome uint8_t le_value_intlen; /* size of ints */ 1358*199767f8SToomas Soome uint16_t le_next; /* next entry in hash chain */ 1359*199767f8SToomas Soome uint16_t le_name_chunk; /* first chunk of the name */ 1360*199767f8SToomas Soome uint16_t le_name_numints; /* bytes in name, incl null */ 1361*199767f8SToomas Soome uint16_t le_value_chunk; /* first chunk of the value */ 1362*199767f8SToomas Soome uint16_t le_value_numints; /* value length in ints */ 1363*199767f8SToomas Soome uint32_t le_cd; /* collision differentiator */ 1364*199767f8SToomas Soome uint64_t le_hash; /* hash value of the name */ 1365*199767f8SToomas Soome } l_entry; 1366*199767f8SToomas Soome struct zap_leaf_array { 1367*199767f8SToomas Soome uint8_t la_type; /* always ZAP_CHUNK_ARRAY */ 1368*199767f8SToomas Soome uint8_t la_array[ZAP_LEAF_ARRAY_BYTES]; 1369*199767f8SToomas Soome uint16_t la_next; /* next blk or CHAIN_END */ 1370*199767f8SToomas Soome } l_array; 1371*199767f8SToomas Soome struct zap_leaf_free { 1372*199767f8SToomas Soome uint8_t lf_type; /* always ZAP_CHUNK_FREE */ 1373*199767f8SToomas Soome uint8_t lf_pad[ZAP_LEAF_ARRAY_BYTES]; 1374*199767f8SToomas Soome uint16_t lf_next; /* next in free list, or CHAIN_END */ 1375*199767f8SToomas Soome } l_free; 1376*199767f8SToomas Soome } zap_leaf_chunk_t; 1377*199767f8SToomas Soome 1378*199767f8SToomas Soome typedef struct zap_leaf { 1379*199767f8SToomas Soome int l_bs; /* block size shift */ 1380*199767f8SToomas Soome zap_leaf_phys_t *l_phys; 1381*199767f8SToomas Soome } zap_leaf_t; 1382*199767f8SToomas Soome 1383*199767f8SToomas Soome /* 1384*199767f8SToomas Soome * Define special zfs pflags 1385*199767f8SToomas Soome */ 1386*199767f8SToomas Soome #define ZFS_XATTR 0x1 /* is an extended attribute */ 1387*199767f8SToomas Soome #define ZFS_INHERIT_ACE 0x2 /* ace has inheritable ACEs */ 1388*199767f8SToomas Soome #define ZFS_ACL_TRIVIAL 0x4 /* files ACL is trivial */ 1389*199767f8SToomas Soome 1390*199767f8SToomas Soome #define MASTER_NODE_OBJ 1 1391*199767f8SToomas Soome 1392*199767f8SToomas Soome /* 1393*199767f8SToomas Soome * special attributes for master node. 1394*199767f8SToomas Soome */ 1395*199767f8SToomas Soome 1396*199767f8SToomas Soome #define ZFS_FSID "FSID" 1397*199767f8SToomas Soome #define ZFS_UNLINKED_SET "DELETE_QUEUE" 1398*199767f8SToomas Soome #define ZFS_ROOT_OBJ "ROOT" 1399*199767f8SToomas Soome #define ZPL_VERSION_OBJ "VERSION" 1400*199767f8SToomas Soome #define ZFS_PROP_BLOCKPERPAGE "BLOCKPERPAGE" 1401*199767f8SToomas Soome #define ZFS_PROP_NOGROWBLOCKS "NOGROWBLOCKS" 1402*199767f8SToomas Soome 1403*199767f8SToomas Soome #define ZFS_FLAG_BLOCKPERPAGE 0x1 1404*199767f8SToomas Soome #define ZFS_FLAG_NOGROWBLOCKS 0x2 1405*199767f8SToomas Soome 1406*199767f8SToomas Soome /* 1407*199767f8SToomas Soome * ZPL version - rev'd whenever an incompatible on-disk format change 1408*199767f8SToomas Soome * occurs. Independent of SPA/DMU/ZAP versioning. 1409*199767f8SToomas Soome */ 1410*199767f8SToomas Soome 1411*199767f8SToomas Soome #define ZPL_VERSION 1ULL 1412*199767f8SToomas Soome 1413*199767f8SToomas Soome /* 1414*199767f8SToomas Soome * The directory entry has the type (currently unused on Solaris) in the 1415*199767f8SToomas Soome * top 4 bits, and the object number in the low 48 bits. The "middle" 1416*199767f8SToomas Soome * 12 bits are unused. 1417*199767f8SToomas Soome */ 1418*199767f8SToomas Soome #define ZFS_DIRENT_TYPE(de) BF64_GET(de, 60, 4) 1419*199767f8SToomas Soome #define ZFS_DIRENT_OBJ(de) BF64_GET(de, 0, 48) 1420*199767f8SToomas Soome #define ZFS_DIRENT_MAKE(type, obj) (((uint64_t)type << 60) | obj) 1421*199767f8SToomas Soome 1422*199767f8SToomas Soome typedef struct ace { 1423*199767f8SToomas Soome uid_t a_who; /* uid or gid */ 1424*199767f8SToomas Soome uint32_t a_access_mask; /* read,write,... */ 1425*199767f8SToomas Soome uint16_t a_flags; /* see below */ 1426*199767f8SToomas Soome uint16_t a_type; /* allow or deny */ 1427*199767f8SToomas Soome } ace_t; 1428*199767f8SToomas Soome 1429*199767f8SToomas Soome #define ACE_SLOT_CNT 6 1430*199767f8SToomas Soome 1431*199767f8SToomas Soome typedef struct zfs_znode_acl { 1432*199767f8SToomas Soome uint64_t z_acl_extern_obj; /* ext acl pieces */ 1433*199767f8SToomas Soome uint32_t z_acl_count; /* Number of ACEs */ 1434*199767f8SToomas Soome uint16_t z_acl_version; /* acl version */ 1435*199767f8SToomas Soome uint16_t z_acl_pad; /* pad */ 1436*199767f8SToomas Soome ace_t z_ace_data[ACE_SLOT_CNT]; /* 6 standard ACEs */ 1437*199767f8SToomas Soome } zfs_znode_acl_t; 1438*199767f8SToomas Soome 1439*199767f8SToomas Soome /* 1440*199767f8SToomas Soome * This is the persistent portion of the znode. It is stored 1441*199767f8SToomas Soome * in the "bonus buffer" of the file. Short symbolic links 1442*199767f8SToomas Soome * are also stored in the bonus buffer. 1443*199767f8SToomas Soome */ 1444*199767f8SToomas Soome typedef struct znode_phys { 1445*199767f8SToomas Soome uint64_t zp_atime[2]; /* 0 - last file access time */ 1446*199767f8SToomas Soome uint64_t zp_mtime[2]; /* 16 - last file modification time */ 1447*199767f8SToomas Soome uint64_t zp_ctime[2]; /* 32 - last file change time */ 1448*199767f8SToomas Soome uint64_t zp_crtime[2]; /* 48 - creation time */ 1449*199767f8SToomas Soome uint64_t zp_gen; /* 64 - generation (txg of creation) */ 1450*199767f8SToomas Soome uint64_t zp_mode; /* 72 - file mode bits */ 1451*199767f8SToomas Soome uint64_t zp_size; /* 80 - size of file */ 1452*199767f8SToomas Soome uint64_t zp_parent; /* 88 - directory parent (`..') */ 1453*199767f8SToomas Soome uint64_t zp_links; /* 96 - number of links to file */ 1454*199767f8SToomas Soome uint64_t zp_xattr; /* 104 - DMU object for xattrs */ 1455*199767f8SToomas Soome uint64_t zp_rdev; /* 112 - dev_t for VBLK & VCHR files */ 1456*199767f8SToomas Soome uint64_t zp_flags; /* 120 - persistent flags */ 1457*199767f8SToomas Soome uint64_t zp_uid; /* 128 - file owner */ 1458*199767f8SToomas Soome uint64_t zp_gid; /* 136 - owning group */ 1459*199767f8SToomas Soome uint64_t zp_pad[4]; /* 144 - future */ 1460*199767f8SToomas Soome zfs_znode_acl_t zp_acl; /* 176 - 263 ACL */ 1461*199767f8SToomas Soome /* 1462*199767f8SToomas Soome * Data may pad out any remaining bytes in the znode buffer, eg: 1463*199767f8SToomas Soome * 1464*199767f8SToomas Soome * |<---------------------- dnode_phys (512) ------------------------>| 1465*199767f8SToomas Soome * |<-- dnode (192) --->|<----------- "bonus" buffer (320) ---------->| 1466*199767f8SToomas Soome * |<---- znode (264) ---->|<---- data (56) ---->| 1467*199767f8SToomas Soome * 1468*199767f8SToomas Soome * At present, we only use this space to store symbolic links. 1469*199767f8SToomas Soome */ 1470*199767f8SToomas Soome } znode_phys_t; 1471*199767f8SToomas Soome 1472*199767f8SToomas Soome /* 1473*199767f8SToomas Soome * In-core vdev representation. 1474*199767f8SToomas Soome */ 1475*199767f8SToomas Soome struct vdev; 1476*199767f8SToomas Soome typedef int vdev_phys_read_t(struct vdev *vdev, void *priv, 1477*199767f8SToomas Soome off_t offset, void *buf, size_t bytes); 1478*199767f8SToomas Soome typedef int vdev_read_t(struct vdev *vdev, const blkptr_t *bp, 1479*199767f8SToomas Soome void *buf, off_t offset, size_t bytes); 1480*199767f8SToomas Soome 1481*199767f8SToomas Soome typedef STAILQ_HEAD(vdev_list, vdev) vdev_list_t; 1482*199767f8SToomas Soome 1483*199767f8SToomas Soome typedef struct vdev { 1484*199767f8SToomas Soome STAILQ_ENTRY(vdev) v_childlink; /* link in parent's child list */ 1485*199767f8SToomas Soome STAILQ_ENTRY(vdev) v_alllink; /* link in global vdev list */ 1486*199767f8SToomas Soome vdev_list_t v_children; /* children of this vdev */ 1487*199767f8SToomas Soome const char *v_name; /* vdev name */ 1488*199767f8SToomas Soome const char *v_phys_path; /* vdev bootpath */ 1489*199767f8SToomas Soome const char *v_devid; /* vdev devid */ 1490*199767f8SToomas Soome uint64_t v_guid; /* vdev guid */ 1491*199767f8SToomas Soome int v_id; /* index in parent */ 1492*199767f8SToomas Soome int v_ashift; /* offset to block shift */ 1493*199767f8SToomas Soome int v_nparity; /* # parity for raidz */ 1494*199767f8SToomas Soome struct vdev *v_top; /* parent vdev */ 1495*199767f8SToomas Soome int v_nchildren; /* # children */ 1496*199767f8SToomas Soome vdev_state_t v_state; /* current state */ 1497*199767f8SToomas Soome vdev_phys_read_t *v_phys_read; /* read from raw leaf vdev */ 1498*199767f8SToomas Soome vdev_read_t *v_read; /* read from vdev */ 1499*199767f8SToomas Soome void *v_read_priv; /* private data for read function */ 1500*199767f8SToomas Soome } vdev_t; 1501*199767f8SToomas Soome 1502*199767f8SToomas Soome /* 1503*199767f8SToomas Soome * In-core pool representation. 1504*199767f8SToomas Soome */ 1505*199767f8SToomas Soome typedef STAILQ_HEAD(spa_list, spa) spa_list_t; 1506*199767f8SToomas Soome 1507*199767f8SToomas Soome typedef struct spa { 1508*199767f8SToomas Soome STAILQ_ENTRY(spa) spa_link; /* link in global pool list */ 1509*199767f8SToomas Soome char *spa_name; /* pool name */ 1510*199767f8SToomas Soome uint64_t spa_guid; /* pool guid */ 1511*199767f8SToomas Soome uint64_t spa_txg; /* most recent transaction */ 1512*199767f8SToomas Soome struct uberblock spa_uberblock; /* best uberblock so far */ 1513*199767f8SToomas Soome vdev_list_t spa_vdevs; /* list of all toplevel vdevs */ 1514*199767f8SToomas Soome objset_phys_t spa_mos; /* MOS for this pool */ 1515*199767f8SToomas Soome int spa_inited; /* initialized */ 1516*199767f8SToomas Soome } spa_t; 1517*199767f8SToomas Soome 1518*199767f8SToomas Soome static void decode_embedded_bp_compressed(const blkptr_t *, void *); 1519