| /* |
| * CDDL HEADER START |
| * |
| * The contents of this file are subject to the terms of the |
| * Common Development and Distribution License (the "License"). |
| * You may not use this file except in compliance with the License. |
| * |
| * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE |
| * or http://www.opensolaris.org/os/licensing. |
| * See the License for the specific language governing permissions |
| * and limitations under the License. |
| * |
| * When distributing Covered Code, include this CDDL HEADER in each |
| * file and include the License file at usr/src/OPENSOLARIS.LICENSE. |
| * If applicable, add the following below this CDDL HEADER, with the |
| * fields enclosed by brackets "[]" replaced with your own identifying |
| * information: Portions Copyright [yyyy] [name of copyright owner] |
| * |
| * CDDL HEADER END |
| */ |
| /* |
| * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved. |
| * Copyright (c) 2011, 2018 by Delphix. All rights reserved. |
| * Copyright 2011 Nexenta Systems, Inc. All rights reserved. |
| * Copyright (c) 2014 Spectra Logic Corporation, All rights reserved. |
| * Copyright 2013 Saso Kiselkov. All rights reserved. |
| * Copyright (c) 2014 Integros [integros.com] |
| * Copyright 2017 Joyent, Inc. |
| * Copyright (c) 2017, 2019, Datto Inc. All rights reserved. |
| * Copyright (c) 2017, Intel Corporation. |
| */ |
| |
| #ifndef _SYS_SPA_H |
| #define _SYS_SPA_H |
| |
| #include <sys/avl.h> |
| #include <sys/zfs_context.h> |
| #include <sys/kstat.h> |
| #include <sys/nvpair.h> |
| #include <sys/sysmacros.h> |
| #include <sys/types.h> |
| #include <sys/fs/zfs.h> |
| #include <sys/spa_checksum.h> |
| #include <sys/dmu.h> |
| |
| #ifdef __cplusplus |
| extern "C" { |
| #endif |
| |
| /* |
| * Forward references that lots of things need. |
| */ |
| typedef struct spa spa_t; |
| typedef struct vdev vdev_t; |
| typedef struct metaslab metaslab_t; |
| typedef struct metaslab_group metaslab_group_t; |
| typedef struct metaslab_class metaslab_class_t; |
| typedef struct zio zio_t; |
| typedef struct zilog zilog_t; |
| typedef struct spa_aux_vdev spa_aux_vdev_t; |
| typedef struct ddt ddt_t; |
| typedef struct ddt_entry ddt_entry_t; |
| typedef struct zbookmark_phys zbookmark_phys_t; |
| |
| struct dsl_pool; |
| struct dsl_dataset; |
| struct dsl_crypto_params; |
| |
| /* |
| * General-purpose 32-bit and 64-bit bitfield encodings. |
| */ |
| #define BF32_DECODE(x, low, len) P2PHASE((x) >> (low), 1U << (len)) |
| #define BF64_DECODE(x, low, len) P2PHASE((x) >> (low), 1ULL << (len)) |
| #define BF32_ENCODE(x, low, len) (P2PHASE((x), 1U << (len)) << (low)) |
| #define BF64_ENCODE(x, low, len) (P2PHASE((x), 1ULL << (len)) << (low)) |
| |
| #define BF32_GET(x, low, len) BF32_DECODE(x, low, len) |
| #define BF64_GET(x, low, len) BF64_DECODE(x, low, len) |
| |
| #define BF32_SET(x, low, len, val) do { \ |
| ASSERT3U(val, <, 1U << (len)); \ |
| ASSERT3U(low + len, <=, 32); \ |
| (x) ^= BF32_ENCODE((x >> low) ^ (val), low, len); \ |
| _NOTE(CONSTCOND) } while (0) |
| |
| #define BF64_SET(x, low, len, val) do { \ |
| ASSERT3U(val, <, 1ULL << (len)); \ |
| ASSERT3U(low + len, <=, 64); \ |
| ((x) ^= BF64_ENCODE((x >> low) ^ (val), low, len)); \ |
| _NOTE(CONSTCOND) } while (0) |
| |
| #define BF32_GET_SB(x, low, len, shift, bias) \ |
| ((BF32_GET(x, low, len) + (bias)) << (shift)) |
| #define BF64_GET_SB(x, low, len, shift, bias) \ |
| ((BF64_GET(x, low, len) + (bias)) << (shift)) |
| |
| #define BF32_SET_SB(x, low, len, shift, bias, val) do { \ |
| ASSERT(IS_P2ALIGNED(val, 1U << shift)); \ |
| ASSERT3S((val) >> (shift), >=, bias); \ |
| BF32_SET(x, low, len, ((val) >> (shift)) - (bias)); \ |
| _NOTE(CONSTCOND) } while (0) |
| #define BF64_SET_SB(x, low, len, shift, bias, val) do { \ |
| ASSERT(IS_P2ALIGNED(val, 1ULL << shift)); \ |
| ASSERT3S((val) >> (shift), >=, bias); \ |
| BF64_SET(x, low, len, ((val) >> (shift)) - (bias)); \ |
| _NOTE(CONSTCOND) } while (0) |
| |
| /* |
| * We currently support block sizes from 512 bytes to 16MB. |
| * The benefits of larger blocks, and thus larger IO, need to be weighed |
| * against the cost of COWing a giant block to modify one byte, and the |
| * large latency of reading or writing a large block. |
| * |
| * Note that although blocks up to 16MB are supported, the recordsize |
| * property can not be set larger than zfs_max_recordsize (default 1MB). |
| * See the comment near zfs_max_recordsize in dsl_dataset.c for details. |
| * |
| * Note that although the LSIZE field of the blkptr_t can store sizes up |
| * to 32MB, the dnode's dn_datablkszsec can only store sizes up to |
| * 32MB - 512 bytes. Therefore, we limit SPA_MAXBLOCKSIZE to 16MB. |
| */ |
| #define SPA_MINBLOCKSHIFT 9 |
| #define SPA_OLD_MAXBLOCKSHIFT 17 |
| #define SPA_MAXBLOCKSHIFT 24 |
| #define SPA_MINBLOCKSIZE (1ULL << SPA_MINBLOCKSHIFT) |
| #define SPA_OLD_MAXBLOCKSIZE (1ULL << SPA_OLD_MAXBLOCKSHIFT) |
| #define SPA_MAXBLOCKSIZE (1ULL << SPA_MAXBLOCKSHIFT) |
| |
| /* |
| * Alignment Shift (ashift) is an immutable, internal top-level vdev property |
| * which can only be set at vdev creation time. Physical writes are always done |
| * according to it, which makes 2^ashift the smallest possible IO on a vdev. |
| * |
| * We currently allow values ranging from 512 bytes (2^9 = 512) to 64 KiB |
| * (2^16 = 65,536). |
| */ |
| #define ASHIFT_MIN 9 |
| #define ASHIFT_MAX 16 |
| |
| /* |
| * Size of block to hold the configuration data (a packed nvlist) |
| */ |
| #define SPA_CONFIG_BLOCKSIZE (1ULL << 14) |
| |
| /* |
| * The DVA size encodings for LSIZE and PSIZE support blocks up to 32MB. |
| * The ASIZE encoding should be at least 64 times larger (6 more bits) |
| * to support up to 4-way RAID-Z mirror mode with worst-case gang block |
| * overhead, three DVAs per bp, plus one more bit in case we do anything |
| * else that expands the ASIZE. |
| */ |
| #define SPA_LSIZEBITS 16 /* LSIZE up to 32M (2^16 * 512) */ |
| #define SPA_PSIZEBITS 16 /* PSIZE up to 32M (2^16 * 512) */ |
| #define SPA_ASIZEBITS 24 /* ASIZE up to 64 times larger */ |
| |
| #define SPA_COMPRESSBITS 7 |
| #define SPA_VDEVBITS 24 |
| |
| /* |
| * All SPA data is represented by 128-bit data virtual addresses (DVAs). |
| * The members of the dva_t should be considered opaque outside the SPA. |
| */ |
| typedef struct dva { |
| uint64_t dva_word[2]; |
| } dva_t; |
| |
| |
| /* |
| * Some checksums/hashes need a 256-bit initialization salt. This salt is kept |
| * secret and is suitable for use in MAC algorithms as the key. |
| */ |
| typedef struct zio_cksum_salt { |
| uint8_t zcs_bytes[32]; |
| } zio_cksum_salt_t; |
| |
| /* |
| * Each block is described by its DVAs, time of birth, checksum, etc. |
| * The word-by-word, bit-by-bit layout of the blkptr is as follows: |
| * |
| * 64 56 48 40 32 24 16 8 0 |
| * +-------+-------+-------+-------+-------+-------+-------+-------+ |
| * 0 | pad | vdev1 | GRID | ASIZE | |
| * +-------+-------+-------+-------+-------+-------+-------+-------+ |
| * 1 |G| offset1 | |
| * +-------+-------+-------+-------+-------+-------+-------+-------+ |
| * 2 | pad | vdev2 | GRID | ASIZE | |
| * +-------+-------+-------+-------+-------+-------+-------+-------+ |
| * 3 |G| offset2 | |
| * +-------+-------+-------+-------+-------+-------+-------+-------+ |
| * 4 | pad | vdev3 | GRID | ASIZE | |
| * +-------+-------+-------+-------+-------+-------+-------+-------+ |
| * 5 |G| offset3 | |
| * +-------+-------+-------+-------+-------+-------+-------+-------+ |
| * 6 |BDX|lvl| type | cksum |E| comp| PSIZE | LSIZE | |
| * +-------+-------+-------+-------+-------+-------+-------+-------+ |
| * 7 | padding | |
| * +-------+-------+-------+-------+-------+-------+-------+-------+ |
| * 8 | padding | |
| * +-------+-------+-------+-------+-------+-------+-------+-------+ |
| * 9 | physical birth txg | |
| * +-------+-------+-------+-------+-------+-------+-------+-------+ |
| * a | logical birth txg | |
| * +-------+-------+-------+-------+-------+-------+-------+-------+ |
| * b | fill count | |
| * +-------+-------+-------+-------+-------+-------+-------+-------+ |
| * c | checksum[0] | |
| * +-------+-------+-------+-------+-------+-------+-------+-------+ |
| * d | checksum[1] | |
| * +-------+-------+-------+-------+-------+-------+-------+-------+ |
| * e | checksum[2] | |
| * +-------+-------+-------+-------+-------+-------+-------+-------+ |
| * f | checksum[3] | |
| * +-------+-------+-------+-------+-------+-------+-------+-------+ |
| * |
| * Legend: |
| * |
| * vdev virtual device ID |
| * offset offset into virtual device |
| * LSIZE logical size |
| * PSIZE physical size (after compression) |
| * ASIZE allocated size (including RAID-Z parity and gang block headers) |
| * GRID RAID-Z layout information (reserved for future use) |
| * cksum checksum function |
| * comp compression function |
| * G gang block indicator |
| * B byteorder (endianness) |
| * D dedup |
| * X encryption |
| * E blkptr_t contains embedded data (see below) |
| * lvl level of indirection |
| * type DMU object type |
| * phys birth txg when dva[0] was written; zero if same as logical birth txg |
| * note that typically all the dva's would be written in this |
| * txg, but they could be different if they were moved by |
| * device removal. |
| * log. birth transaction group in which the block was logically born |
| * fill count number of non-zero blocks under this bp |
| * checksum[4] 256-bit checksum of the data this bp describes |
| */ |
| |
| /* |
| * The blkptr_t's of encrypted blocks also need to store the encryption |
| * parameters so that the block can be decrypted. This layout is as follows: |
| * |
| * 64 56 48 40 32 24 16 8 0 |
| * +-------+-------+-------+-------+-------+-------+-------+-------+ |
| * 0 | vdev1 | GRID | ASIZE | |
| * +-------+-------+-------+-------+-------+-------+-------+-------+ |
| * 1 |G| offset1 | |
| * +-------+-------+-------+-------+-------+-------+-------+-------+ |
| * 2 | vdev2 | GRID | ASIZE | |
| * +-------+-------+-------+-------+-------+-------+-------+-------+ |
| * 3 |G| offset2 | |
| * +-------+-------+-------+-------+-------+-------+-------+-------+ |
| * 4 | salt | |
| * +-------+-------+-------+-------+-------+-------+-------+-------+ |
| * 5 | IV1 | |
| * +-------+-------+-------+-------+-------+-------+-------+-------+ |
| * 6 |BDX|lvl| type | cksum |E| comp| PSIZE | LSIZE | |
| * +-------+-------+-------+-------+-------+-------+-------+-------+ |
| * 7 | padding | |
| * +-------+-------+-------+-------+-------+-------+-------+-------+ |
| * 8 | padding | |
| * +-------+-------+-------+-------+-------+-------+-------+-------+ |
| * 9 | physical birth txg | |
| * +-------+-------+-------+-------+-------+-------+-------+-------+ |
| * a | logical birth txg | |
| * +-------+-------+-------+-------+-------+-------+-------+-------+ |
| * b | IV2 | fill count | |
| * +-------+-------+-------+-------+-------+-------+-------+-------+ |
| * c | checksum[0] | |
| * +-------+-------+-------+-------+-------+-------+-------+-------+ |
| * d | checksum[1] | |
| * +-------+-------+-------+-------+-------+-------+-------+-------+ |
| * e | MAC[0] | |
| * +-------+-------+-------+-------+-------+-------+-------+-------+ |
| * f | MAC[1] | |
| * +-------+-------+-------+-------+-------+-------+-------+-------+ |
| * |
| * Legend: |
| * |
| * salt Salt for generating encryption keys |
| * IV1 First 64 bits of encryption IV |
| * X Block requires encryption handling (set to 1) |
| * E blkptr_t contains embedded data (set to 0, see below) |
| * fill count number of non-zero blocks under this bp (truncated to 32 bits) |
| * IV2 Last 32 bits of encryption IV |
| * checksum[2] 128-bit checksum of the data this bp describes |
| * MAC[2] 128-bit message authentication code for this data |
| * |
| * The X bit being set indicates that this block is one of 3 types. If this is |
| * a level 0 block with an encrypted object type, the block is encrypted |
| * (see BP_IS_ENCRYPTED()). If this is a level 0 block with an unencrypted |
| * object type, this block is authenticated with an HMAC (see |
| * BP_IS_AUTHENTICATED()). Otherwise (if level > 0), this bp will use the MAC |
| * words to store a checksum-of-MACs from the level below (see |
| * BP_HAS_INDIRECT_MAC_CKSUM()). For convenience in the code, BP_IS_PROTECTED() |
| * refers to both encrypted and authenticated blocks and BP_USES_CRYPT() |
| * refers to any of these 3 kinds of blocks. |
| * |
| * The additional encryption parameters are the salt, IV, and MAC which are |
| * explained in greater detail in the block comment at the top of zio_crypt.c. |
| * The MAC occupies half of the checksum space since it serves a very similar |
| * purpose: to prevent data corruption on disk. The only functional difference |
| * is that the checksum is used to detect on-disk corruption whether or not the |
| * encryption key is loaded and the MAC provides additional protection against |
| * malicious disk tampering. We use the 3rd DVA to store the salt and first |
| * 64 bits of the IV. As a result encrypted blocks can only have 2 copies |
| * maximum instead of the normal 3. The last 32 bits of the IV are stored in |
| * the upper bits of what is usually the fill count. Note that only blocks at |
| * level 0 or -2 are ever encrypted, which allows us to guarantee that these |
| * 32 bits are not trampled over by other code (see zio_crypt.c for details). |
| * The salt and IV are not used for authenticated bps or bps with an indirect |
| * MAC checksum, so these blocks can utilize all 3 DVAs and the full 64 bits |
| * for the fill count. |
| */ |
| |
| /* |
| * "Embedded" blkptr_t's don't actually point to a block, instead they |
| * have a data payload embedded in the blkptr_t itself. See the comment |
| * in blkptr.c for more details. |
| * |
| * The blkptr_t is laid out as follows: |
| * |
| * 64 56 48 40 32 24 16 8 0 |
| * +-------+-------+-------+-------+-------+-------+-------+-------+ |
| * 0 | payload | |
| * 1 | payload | |
| * 2 | payload | |
| * 3 | payload | |
| * 4 | payload | |
| * 5 | payload | |
| * +-------+-------+-------+-------+-------+-------+-------+-------+ |
| * 6 |BDX|lvl| type | etype |E| comp| PSIZE| LSIZE | |
| * +-------+-------+-------+-------+-------+-------+-------+-------+ |
| * 7 | payload | |
| * 8 | payload | |
| * 9 | payload | |
| * +-------+-------+-------+-------+-------+-------+-------+-------+ |
| * a | logical birth txg | |
| * +-------+-------+-------+-------+-------+-------+-------+-------+ |
| * b | payload | |
| * c | payload | |
| * d | payload | |
| * e | payload | |
| * f | payload | |
| * +-------+-------+-------+-------+-------+-------+-------+-------+ |
| * |
| * Legend: |
| * |
| * payload contains the embedded data |
| * B (byteorder) byteorder (endianness) |
| * D (dedup) padding (set to zero) |
| * X encryption (set to zero) |
| * E (embedded) set to one |
| * lvl indirection level |
| * type DMU object type |
| * etype how to interpret embedded data (BP_EMBEDDED_TYPE_*) |
| * comp compression function of payload |
| * PSIZE size of payload after compression, in bytes |
| * LSIZE logical size of payload, in bytes |
| * note that 25 bits is enough to store the largest |
| * "normal" BP's LSIZE (2^16 * 2^9) in bytes |
| * log. birth transaction group in which the block was logically born |
| * |
| * Note that LSIZE and PSIZE are stored in bytes, whereas for non-embedded |
| * bp's they are stored in units of SPA_MINBLOCKSHIFT. |
| * Generally, the generic BP_GET_*() macros can be used on embedded BP's. |
| * The B, D, X, lvl, type, and comp fields are stored the same as with normal |
| * BP's so the BP_SET_* macros can be used with them. etype, PSIZE, LSIZE must |
| * be set with the BPE_SET_* macros. BP_SET_EMBEDDED() should be called before |
| * other macros, as they assert that they are only used on BP's of the correct |
| * "embedded-ness". Encrypted blkptr_t's cannot be embedded because they use |
| * the payload space for encryption parameters (see the comment above on |
| * how encryption parameters are stored). |
| */ |
| |
| #define BPE_GET_ETYPE(bp) \ |
| (ASSERT(BP_IS_EMBEDDED(bp)), \ |
| BF64_GET((bp)->blk_prop, 40, 8)) |
| #define BPE_SET_ETYPE(bp, t) do { \ |
| ASSERT(BP_IS_EMBEDDED(bp)); \ |
| BF64_SET((bp)->blk_prop, 40, 8, t); \ |
| _NOTE(CONSTCOND) } while (0) |
| |
| #define BPE_GET_LSIZE(bp) \ |
| (ASSERT(BP_IS_EMBEDDED(bp)), \ |
| BF64_GET_SB((bp)->blk_prop, 0, 25, 0, 1)) |
| #define BPE_SET_LSIZE(bp, x) do { \ |
| ASSERT(BP_IS_EMBEDDED(bp)); \ |
| BF64_SET_SB((bp)->blk_prop, 0, 25, 0, 1, x); \ |
| _NOTE(CONSTCOND) } while (0) |
| |
| #define BPE_GET_PSIZE(bp) \ |
| (ASSERT(BP_IS_EMBEDDED(bp)), \ |
| BF64_GET_SB((bp)->blk_prop, 25, 7, 0, 1)) |
| #define BPE_SET_PSIZE(bp, x) do { \ |
| ASSERT(BP_IS_EMBEDDED(bp)); \ |
| BF64_SET_SB((bp)->blk_prop, 25, 7, 0, 1, x); \ |
| _NOTE(CONSTCOND) } while (0) |
| |
| typedef enum bp_embedded_type { |
| BP_EMBEDDED_TYPE_DATA, |
| BP_EMBEDDED_TYPE_RESERVED, /* Reserved for Delphix byteswap feature. */ |
| NUM_BP_EMBEDDED_TYPES |
| } bp_embedded_type_t; |
| |
| #define BPE_NUM_WORDS 14 |
| #define BPE_PAYLOAD_SIZE (BPE_NUM_WORDS * sizeof (uint64_t)) |
| #define BPE_IS_PAYLOADWORD(bp, wp) \ |
| ((wp) != &(bp)->blk_prop && (wp) != &(bp)->blk_birth) |
| |
| #define SPA_BLKPTRSHIFT 7 /* blkptr_t is 128 bytes */ |
| #define SPA_DVAS_PER_BP 3 /* Number of DVAs in a bp */ |
| #define SPA_SYNC_MIN_VDEVS 3 /* min vdevs to update during sync */ |
| |
| /* |
| * A block is a hole when it has either 1) never been written to, or |
| * 2) is zero-filled. In both cases, ZFS can return all zeroes for all reads |
| * without physically allocating disk space. Holes are represented in the |
| * blkptr_t structure by zeroed blk_dva. Correct checking for holes is |
| * done through the BP_IS_HOLE macro. For holes, the logical size, level, |
| * DMU object type, and birth times are all also stored for holes that |
| * were written to at some point (i.e. were punched after having been filled). |
| */ |
| typedef struct blkptr { |
| dva_t blk_dva[SPA_DVAS_PER_BP]; /* Data Virtual Addresses */ |
| uint64_t blk_prop; /* size, compression, type, etc */ |
| uint64_t blk_pad[2]; /* Extra space for the future */ |
| uint64_t blk_phys_birth; /* txg when block was allocated */ |
| uint64_t blk_birth; /* transaction group at birth */ |
| uint64_t blk_fill; /* fill count */ |
| zio_cksum_t blk_cksum; /* 256-bit checksum */ |
| } blkptr_t; |
| |
| /* |
| * Macros to get and set fields in a bp or DVA. |
| */ |
| #define DVA_GET_ASIZE(dva) \ |
| BF64_GET_SB((dva)->dva_word[0], 0, SPA_ASIZEBITS, SPA_MINBLOCKSHIFT, 0) |
| #define DVA_SET_ASIZE(dva, x) \ |
| BF64_SET_SB((dva)->dva_word[0], 0, SPA_ASIZEBITS, \ |
| SPA_MINBLOCKSHIFT, 0, x) |
| |
| #define DVA_GET_GRID(dva) BF64_GET((dva)->dva_word[0], 24, 8) |
| #define DVA_SET_GRID(dva, x) BF64_SET((dva)->dva_word[0], 24, 8, x) |
| |
| #define DVA_GET_VDEV(dva) BF64_GET((dva)->dva_word[0], 32, SPA_VDEVBITS) |
| #define DVA_SET_VDEV(dva, x) \ |
| BF64_SET((dva)->dva_word[0], 32, SPA_VDEVBITS, x) |
| |
| #define DVA_GET_OFFSET(dva) \ |
| BF64_GET_SB((dva)->dva_word[1], 0, 63, SPA_MINBLOCKSHIFT, 0) |
| #define DVA_SET_OFFSET(dva, x) \ |
| BF64_SET_SB((dva)->dva_word[1], 0, 63, SPA_MINBLOCKSHIFT, 0, x) |
| |
| #define DVA_GET_GANG(dva) BF64_GET((dva)->dva_word[1], 63, 1) |
| #define DVA_SET_GANG(dva, x) BF64_SET((dva)->dva_word[1], 63, 1, x) |
| |
| #define BP_GET_LSIZE(bp) \ |
| (BP_IS_EMBEDDED(bp) ? \ |
| (BPE_GET_ETYPE(bp) == BP_EMBEDDED_TYPE_DATA ? BPE_GET_LSIZE(bp) : 0): \ |
| BF64_GET_SB((bp)->blk_prop, 0, SPA_LSIZEBITS, SPA_MINBLOCKSHIFT, 1)) |
| #define BP_SET_LSIZE(bp, x) do { \ |
| ASSERT(!BP_IS_EMBEDDED(bp)); \ |
| BF64_SET_SB((bp)->blk_prop, \ |
| 0, SPA_LSIZEBITS, SPA_MINBLOCKSHIFT, 1, x); \ |
| _NOTE(CONSTCOND) } while (0) |
| |
| #define BP_GET_PSIZE(bp) \ |
| (BP_IS_EMBEDDED(bp) ? 0 : \ |
| BF64_GET_SB((bp)->blk_prop, 16, SPA_PSIZEBITS, SPA_MINBLOCKSHIFT, 1)) |
| #define BP_SET_PSIZE(bp, x) do { \ |
| ASSERT(!BP_IS_EMBEDDED(bp)); \ |
| BF64_SET_SB((bp)->blk_prop, \ |
| 16, SPA_PSIZEBITS, SPA_MINBLOCKSHIFT, 1, x); \ |
| _NOTE(CONSTCOND) } while (0) |
| |
| #define BP_GET_COMPRESS(bp) \ |
| BF64_GET((bp)->blk_prop, 32, SPA_COMPRESSBITS) |
| #define BP_SET_COMPRESS(bp, x) \ |
| BF64_SET((bp)->blk_prop, 32, SPA_COMPRESSBITS, x) |
| |
| #define BP_IS_EMBEDDED(bp) BF64_GET((bp)->blk_prop, 39, 1) |
| #define BP_SET_EMBEDDED(bp, x) BF64_SET((bp)->blk_prop, 39, 1, x) |
| |
| #define BP_GET_CHECKSUM(bp) \ |
| (BP_IS_EMBEDDED(bp) ? ZIO_CHECKSUM_OFF : \ |
| BF64_GET((bp)->blk_prop, 40, 8)) |
| #define BP_SET_CHECKSUM(bp, x) do { \ |
| ASSERT(!BP_IS_EMBEDDED(bp)); \ |
| BF64_SET((bp)->blk_prop, 40, 8, x); \ |
| _NOTE(CONSTCOND) } while (0) |
| |
| #define BP_GET_TYPE(bp) BF64_GET((bp)->blk_prop, 48, 8) |
| #define BP_SET_TYPE(bp, x) BF64_SET((bp)->blk_prop, 48, 8, x) |
| |
| #define BP_GET_LEVEL(bp) BF64_GET((bp)->blk_prop, 56, 5) |
| #define BP_SET_LEVEL(bp, x) BF64_SET((bp)->blk_prop, 56, 5, x) |
| |
| /* encrypted, authenticated, and MAC cksum bps use the same bit */ |
| #define BP_USES_CRYPT(bp) BF64_GET((bp)->blk_prop, 61, 1) |
| #define BP_SET_CRYPT(bp, x) BF64_SET((bp)->blk_prop, 61, 1, x) |
| |
| #define BP_IS_ENCRYPTED(bp) \ |
| (BP_USES_CRYPT(bp) && \ |
| BP_GET_LEVEL(bp) <= 0 && \ |
| DMU_OT_IS_ENCRYPTED(BP_GET_TYPE(bp))) |
| |
| #define BP_IS_AUTHENTICATED(bp) \ |
| (BP_USES_CRYPT(bp) && \ |
| BP_GET_LEVEL(bp) <= 0 && \ |
| !DMU_OT_IS_ENCRYPTED(BP_GET_TYPE(bp))) |
| |
| #define BP_HAS_INDIRECT_MAC_CKSUM(bp) \ |
| (BP_USES_CRYPT(bp) && BP_GET_LEVEL(bp) > 0) |
| |
| #define BP_IS_PROTECTED(bp) \ |
| (BP_IS_ENCRYPTED(bp) || BP_IS_AUTHENTICATED(bp)) |
| |
| #define BP_GET_DEDUP(bp) BF64_GET((bp)->blk_prop, 62, 1) |
| #define BP_SET_DEDUP(bp, x) BF64_SET((bp)->blk_prop, 62, 1, x) |
| |
| #define BP_GET_BYTEORDER(bp) BF64_GET((bp)->blk_prop, 63, 1) |
| #define BP_SET_BYTEORDER(bp, x) BF64_SET((bp)->blk_prop, 63, 1, x) |
| |
| #define BP_PHYSICAL_BIRTH(bp) \ |
| (BP_IS_EMBEDDED(bp) ? 0 : \ |
| (bp)->blk_phys_birth ? (bp)->blk_phys_birth : (bp)->blk_birth) |
| |
| #define BP_SET_BIRTH(bp, logical, physical) \ |
| { \ |
| ASSERT(!BP_IS_EMBEDDED(bp)); \ |
| (bp)->blk_birth = (logical); \ |
| (bp)->blk_phys_birth = ((logical) == (physical) ? 0 : (physical)); \ |
| } |
| |
| #define BP_GET_FILL(bp) \ |
| ((BP_IS_ENCRYPTED(bp)) ? BF64_GET((bp)->blk_fill, 0, 32) : \ |
| ((BP_IS_EMBEDDED(bp)) ? 1 : (bp)->blk_fill)) |
| |
| #define BP_SET_FILL(bp, fill) \ |
| { \ |
| if (BP_IS_ENCRYPTED(bp)) \ |
| BF64_SET((bp)->blk_fill, 0, 32, fill); \ |
| else \ |
| (bp)->blk_fill = fill; \ |
| } |
| |
| #define BP_GET_IV2(bp) \ |
| (ASSERT(BP_IS_ENCRYPTED(bp)), \ |
| BF64_GET((bp)->blk_fill, 32, 32)) |
| #define BP_SET_IV2(bp, iv2) \ |
| { \ |
| ASSERT(BP_IS_ENCRYPTED(bp)); \ |
| BF64_SET((bp)->blk_fill, 32, 32, iv2); \ |
| } |
| |
| #define BP_IS_METADATA(bp) \ |
| (BP_GET_LEVEL(bp) > 0 || DMU_OT_IS_METADATA(BP_GET_TYPE(bp))) |
| |
| #define BP_GET_ASIZE(bp) \ |
| (BP_IS_EMBEDDED(bp) ? 0 : \ |
| DVA_GET_ASIZE(&(bp)->blk_dva[0]) + \ |
| DVA_GET_ASIZE(&(bp)->blk_dva[1]) + \ |
| (DVA_GET_ASIZE(&(bp)->blk_dva[2]) * !BP_IS_ENCRYPTED(bp))) |
| |
| #define BP_GET_UCSIZE(bp) \ |
| (BP_IS_METADATA(bp) ? BP_GET_PSIZE(bp) : BP_GET_LSIZE(bp)) |
| |
| #define BP_GET_NDVAS(bp) \ |
| (BP_IS_EMBEDDED(bp) ? 0 : \ |
| !!DVA_GET_ASIZE(&(bp)->blk_dva[0]) + \ |
| !!DVA_GET_ASIZE(&(bp)->blk_dva[1]) + \ |
| (!!DVA_GET_ASIZE(&(bp)->blk_dva[2]) * !BP_IS_ENCRYPTED(bp))) |
| |
| #define BP_COUNT_GANG(bp) \ |
| (BP_IS_EMBEDDED(bp) ? 0 : \ |
| (DVA_GET_GANG(&(bp)->blk_dva[0]) + \ |
| DVA_GET_GANG(&(bp)->blk_dva[1]) + \ |
| (DVA_GET_GANG(&(bp)->blk_dva[2]) * !BP_IS_ENCRYPTED(bp)))) |
| |
| #define DVA_EQUAL(dva1, dva2) \ |
| ((dva1)->dva_word[1] == (dva2)->dva_word[1] && \ |
| (dva1)->dva_word[0] == (dva2)->dva_word[0]) |
| |
| #define BP_EQUAL(bp1, bp2) \ |
| (BP_PHYSICAL_BIRTH(bp1) == BP_PHYSICAL_BIRTH(bp2) && \ |
| (bp1)->blk_birth == (bp2)->blk_birth && \ |
| DVA_EQUAL(&(bp1)->blk_dva[0], &(bp2)->blk_dva[0]) && \ |
| DVA_EQUAL(&(bp1)->blk_dva[1], &(bp2)->blk_dva[1]) && \ |
| DVA_EQUAL(&(bp1)->blk_dva[2], &(bp2)->blk_dva[2])) |
| |
| |
| #define DVA_IS_VALID(dva) (DVA_GET_ASIZE(dva) != 0) |
| |
| #define BP_IDENTITY(bp) (ASSERT(!BP_IS_EMBEDDED(bp)), &(bp)->blk_dva[0]) |
| #define BP_IS_GANG(bp) \ |
| (BP_IS_EMBEDDED(bp) ? B_FALSE : DVA_GET_GANG(BP_IDENTITY(bp))) |
| #define DVA_IS_EMPTY(dva) ((dva)->dva_word[0] == 0ULL && \ |
| (dva)->dva_word[1] == 0ULL) |
| #define BP_IS_HOLE(bp) \ |
| (!BP_IS_EMBEDDED(bp) && DVA_IS_EMPTY(BP_IDENTITY(bp))) |
| |
| /* BP_IS_RAIDZ(bp) assumes no block compression */ |
| #define BP_IS_RAIDZ(bp) (DVA_GET_ASIZE(&(bp)->blk_dva[0]) > \ |
| BP_GET_PSIZE(bp)) |
| |
| #define BP_ZERO(bp) \ |
| { \ |
| (bp)->blk_dva[0].dva_word[0] = 0; \ |
| (bp)->blk_dva[0].dva_word[1] = 0; \ |
| (bp)->blk_dva[1].dva_word[0] = 0; \ |
| (bp)->blk_dva[1].dva_word[1] = 0; \ |
| (bp)->blk_dva[2].dva_word[0] = 0; \ |
| (bp)->blk_dva[2].dva_word[1] = 0; \ |
| (bp)->blk_prop = 0; \ |
| (bp)->blk_pad[0] = 0; \ |
| (bp)->blk_pad[1] = 0; \ |
| (bp)->blk_phys_birth = 0; \ |
| (bp)->blk_birth = 0; \ |
| (bp)->blk_fill = 0; \ |
| ZIO_SET_CHECKSUM(&(bp)->blk_cksum, 0, 0, 0, 0); \ |
| } |
| |
| #ifdef _BIG_ENDIAN |
| #define ZFS_HOST_BYTEORDER (0ULL) |
| #else |
| #define ZFS_HOST_BYTEORDER (1ULL) |
| #endif |
| |
| #define BP_SHOULD_BYTESWAP(bp) (BP_GET_BYTEORDER(bp) != ZFS_HOST_BYTEORDER) |
| |
| #define BP_SPRINTF_LEN 400 |
| |
| /* |
| * This macro allows code sharing between zfs, libzpool, and mdb. |
| * 'func' is either snprintf() or mdb_snprintf(). |
| * 'ws' (whitespace) can be ' ' for single-line format, '\n' for multi-line. |
| */ |
| #define SNPRINTF_BLKPTR(func, ws, buf, size, bp, type, checksum, compress) \ |
| { \ |
| static const char *copyname[] = \ |
| { "zero", "single", "double", "triple" }; \ |
| int len = 0; \ |
| int copies = 0; \ |
| const char *crypt_type; \ |
| if (bp != NULL) { \ |
| if (BP_IS_ENCRYPTED(bp)) { \ |
| crypt_type = "encrypted"; \ |
| /* LINTED E_SUSPICIOUS_COMPARISON */ \ |
| } else if (BP_IS_AUTHENTICATED(bp)) { \ |
| crypt_type = "authenticated"; \ |
| } else if (BP_HAS_INDIRECT_MAC_CKSUM(bp)) { \ |
| crypt_type = "indirect-MAC"; \ |
| } else { \ |
| crypt_type = "unencrypted"; \ |
| } \ |
| } \ |
| if (bp == NULL) { \ |
| len += func(buf + len, size - len, "<NULL>"); \ |
| } else if (BP_IS_HOLE(bp)) { \ |
| len += func(buf + len, size - len, \ |
| "HOLE [L%llu %s] " \ |
| "size=%llxL birth=%lluL", \ |
| (u_longlong_t)BP_GET_LEVEL(bp), \ |
| type, \ |
| (u_longlong_t)BP_GET_LSIZE(bp), \ |
| (u_longlong_t)bp->blk_birth); \ |
| } else if (BP_IS_EMBEDDED(bp)) { \ |
| len = func(buf + len, size - len, \ |
| "EMBEDDED [L%llu %s] et=%u %s " \ |
| "size=%llxL/%llxP birth=%lluL", \ |
| (u_longlong_t)BP_GET_LEVEL(bp), \ |
| type, \ |
| (int)BPE_GET_ETYPE(bp), \ |
| compress, \ |
| (u_longlong_t)BPE_GET_LSIZE(bp), \ |
| (u_longlong_t)BPE_GET_PSIZE(bp), \ |
| (u_longlong_t)bp->blk_birth); \ |
| } else { \ |
| for (int d = 0; d < BP_GET_NDVAS(bp); d++) { \ |
| const dva_t *dva = &bp->blk_dva[d]; \ |
| if (DVA_IS_VALID(dva)) \ |
| copies++; \ |
| len += func(buf + len, size - len, \ |
| "DVA[%d]=<%llu:%llx:%llx>%c", d, \ |
| (u_longlong_t)DVA_GET_VDEV(dva), \ |
| (u_longlong_t)DVA_GET_OFFSET(dva), \ |
| (u_longlong_t)DVA_GET_ASIZE(dva), \ |
| ws); \ |
| } \ |
| if (BP_IS_ENCRYPTED(bp)) { \ |
| len += func(buf + len, size - len, \ |
| "salt=%llx iv=%llx:%llx%c", \ |
| (u_longlong_t)bp->blk_dva[2].dva_word[0], \ |
| (u_longlong_t)bp->blk_dva[2].dva_word[1], \ |
| (u_longlong_t)BP_GET_IV2(bp), \ |
| ws); \ |
| } \ |
| if (BP_IS_GANG(bp) && \ |
| DVA_GET_ASIZE(&bp->blk_dva[2]) <= \ |
| DVA_GET_ASIZE(&bp->blk_dva[1]) / 2) \ |
| copies--; \ |
| len += func(buf + len, size - len, \ |
| "[L%llu %s] %s %s %s %s %s %s %s%c" \ |
| "size=%llxL/%llxP birth=%lluL/%lluP fill=%llu%c" \ |
| "cksum=%llx:%llx:%llx:%llx", \ |
| (u_longlong_t)BP_GET_LEVEL(bp), \ |
| type, \ |
| checksum, \ |
| compress, \ |
| crypt_type, \ |
| BP_GET_BYTEORDER(bp) == 0 ? "BE" : "LE", \ |
| BP_IS_GANG(bp) ? "gang" : "contiguous", \ |
| BP_GET_DEDUP(bp) ? "dedup" : "unique", \ |
| copyname[copies], \ |
| ws, \ |
| (u_longlong_t)BP_GET_LSIZE(bp), \ |
| (u_longlong_t)BP_GET_PSIZE(bp), \ |
| (u_longlong_t)bp->blk_birth, \ |
| (u_longlong_t)BP_PHYSICAL_BIRTH(bp), \ |
| (u_longlong_t)BP_GET_FILL(bp), \ |
| ws, \ |
| (u_longlong_t)bp->blk_cksum.zc_word[0], \ |
| (u_longlong_t)bp->blk_cksum.zc_word[1], \ |
| (u_longlong_t)bp->blk_cksum.zc_word[2], \ |
| (u_longlong_t)bp->blk_cksum.zc_word[3]); \ |
| } \ |
| ASSERT(len < size); \ |
| } |
| |
| #define BP_GET_BUFC_TYPE(bp) \ |
| (BP_IS_METADATA(bp) ? ARC_BUFC_METADATA : ARC_BUFC_DATA) |
| |
| typedef enum spa_import_type { |
| SPA_IMPORT_EXISTING, |
| SPA_IMPORT_ASSEMBLE |
| } spa_import_type_t; |
| |
| /* |
| * Send TRIM commands in-line during normal pool operation while deleting. |
| * OFF: no |
| * ON: yes |
| */ |
| typedef enum { |
| SPA_AUTOTRIM_OFF = 0, /* default */ |
| SPA_AUTOTRIM_ON |
| } spa_autotrim_t; |
| |
| /* |
| * Reason TRIM command was issued, used internally for accounting purposes. |
| */ |
| typedef enum trim_type { |
| TRIM_TYPE_MANUAL = 0, |
| TRIM_TYPE_AUTO = 1, |
| } trim_type_t; |
| |
| /* state manipulation functions */ |
| extern int spa_open(const char *pool, spa_t **, void *tag); |
| extern int spa_open_rewind(const char *pool, spa_t **, void *tag, |
| nvlist_t *policy, nvlist_t **config); |
| extern int spa_get_stats(const char *pool, nvlist_t **config, char *altroot, |
| size_t buflen); |
| extern int spa_create(const char *pool, nvlist_t *nvroot, nvlist_t *props, |
| nvlist_t *zplprops, struct dsl_crypto_params *dcp); |
| extern int spa_import(char *pool, nvlist_t *config, nvlist_t *props, |
| uint64_t flags); |
| extern nvlist_t *spa_tryimport(nvlist_t *tryconfig); |
| extern int spa_destroy(char *pool); |
| extern int spa_checkpoint(const char *pool); |
| extern int spa_checkpoint_discard(const char *pool); |
| extern int spa_export(char *pool, nvlist_t **oldconfig, boolean_t force, |
| boolean_t hardforce); |
| extern int spa_reset(char *pool); |
| extern void spa_async_request(spa_t *spa, int flag); |
| extern void spa_async_unrequest(spa_t *spa, int flag); |
| extern void spa_async_suspend(spa_t *spa); |
| extern void spa_async_resume(spa_t *spa); |
| extern int spa_async_tasks(spa_t *spa); |
| extern spa_t *spa_inject_addref(char *pool); |
| extern void spa_inject_delref(spa_t *spa); |
| extern void spa_scan_stat_init(spa_t *spa); |
| extern int spa_scan_get_stats(spa_t *spa, pool_scan_stat_t *ps); |
| |
| #define SPA_ASYNC_CONFIG_UPDATE 0x01 |
| #define SPA_ASYNC_REMOVE 0x02 |
| #define SPA_ASYNC_PROBE 0x04 |
| #define SPA_ASYNC_RESILVER_DONE 0x08 |
| #define SPA_ASYNC_RESILVER 0x10 |
| #define SPA_ASYNC_AUTOEXPAND 0x20 |
| #define SPA_ASYNC_REMOVE_DONE 0x40 |
| #define SPA_ASYNC_REMOVE_STOP 0x80 |
| #define SPA_ASYNC_INITIALIZE_RESTART 0x100 |
| #define SPA_ASYNC_TRIM_RESTART 0x200 |
| #define SPA_ASYNC_AUTOTRIM_RESTART 0x400 |
| |
| /* |
| * Controls the behavior of spa_vdev_remove(). |
| */ |
| #define SPA_REMOVE_UNSPARE 0x01 |
| #define SPA_REMOVE_DONE 0x02 |
| |
| /* device manipulation */ |
| extern int spa_vdev_add(spa_t *spa, nvlist_t *nvroot); |
| extern int spa_vdev_attach(spa_t *spa, uint64_t guid, nvlist_t *nvroot, |
| int replacing); |
| extern int spa_vdev_detach(spa_t *spa, uint64_t guid, uint64_t pguid, |
| int replace_done); |
| extern int spa_vdev_remove(spa_t *spa, uint64_t guid, boolean_t unspare); |
| extern boolean_t spa_vdev_remove_active(spa_t *spa); |
| extern int spa_vdev_initialize(spa_t *spa, nvlist_t *nv, uint64_t cmd_type, |
| nvlist_t *vdev_errlist); |
| extern int spa_vdev_trim(spa_t *spa, nvlist_t *nv, uint64_t cmd_type, |
| uint64_t rate, boolean_t partial, boolean_t secure, nvlist_t *vdev_errlist); |
| extern int spa_vdev_setpath(spa_t *spa, uint64_t guid, const char *newpath); |
| extern int spa_vdev_setfru(spa_t *spa, uint64_t guid, const char *newfru); |
| extern int spa_vdev_split_mirror(spa_t *spa, char *newname, nvlist_t *config, |
| nvlist_t *props, boolean_t exp); |
| |
| /* spare state (which is global across all pools) */ |
| extern void spa_spare_add(vdev_t *vd); |
| extern void spa_spare_remove(vdev_t *vd); |
| extern boolean_t spa_spare_exists(uint64_t guid, uint64_t *pool, int *refcnt); |
| extern void spa_spare_activate(vdev_t *vd); |
| |
| /* L2ARC state (which is global across all pools) */ |
| extern void spa_l2cache_add(vdev_t *vd); |
| extern void spa_l2cache_remove(vdev_t *vd); |
| extern boolean_t spa_l2cache_exists(uint64_t guid, uint64_t *pool); |
| extern void spa_l2cache_activate(vdev_t *vd); |
| extern void spa_l2cache_drop(spa_t *spa); |
| |
| /* scanning */ |
| extern int spa_scan(spa_t *spa, pool_scan_func_t func); |
| extern int spa_scan_stop(spa_t *spa); |
| extern int spa_scrub_pause_resume(spa_t *spa, pool_scrub_cmd_t flag); |
| |
| /* spa syncing */ |
| extern void spa_sync(spa_t *spa, uint64_t txg); /* only for DMU use */ |
| extern void spa_sync_allpools(void); |
| |
| extern int zfs_sync_pass_deferred_free; |
| |
| /* spa namespace global mutex */ |
| extern kmutex_t spa_namespace_lock; |
| |
| /* |
| * SPA configuration functions in spa_config.c |
| */ |
| |
| #define SPA_CONFIG_UPDATE_POOL 0 |
| #define SPA_CONFIG_UPDATE_VDEVS 1 |
| |
| extern void spa_write_cachefile(spa_t *, boolean_t, boolean_t); |
| extern void spa_config_load(void); |
| extern nvlist_t *spa_all_configs(uint64_t *); |
| extern void spa_config_set(spa_t *spa, nvlist_t *config); |
| extern nvlist_t *spa_config_generate(spa_t *spa, vdev_t *vd, uint64_t txg, |
| int getstats); |
| extern void spa_config_update(spa_t *spa, int what); |
| |
| /* |
| * Miscellaneous SPA routines in spa_misc.c |
| */ |
| |
| /* Namespace manipulation */ |
| extern spa_t *spa_lookup(const char *name); |
| extern spa_t *spa_add(const char *name, nvlist_t *config, const char *altroot); |
| extern void spa_remove(spa_t *spa); |
| extern spa_t *spa_next(spa_t *prev); |
| |
| /* Refcount functions */ |
| extern void spa_open_ref(spa_t *spa, void *tag); |
| extern void spa_close(spa_t *spa, void *tag); |
| extern void spa_async_close(spa_t *spa, void *tag); |
| extern boolean_t spa_refcount_zero(spa_t *spa); |
| |
| #define SCL_NONE 0x00 |
| #define SCL_CONFIG 0x01 |
| #define SCL_STATE 0x02 |
| #define SCL_L2ARC 0x04 /* hack until L2ARC 2.0 */ |
| #define SCL_ALLOC 0x08 |
| #define SCL_ZIO 0x10 |
| #define SCL_FREE 0x20 |
| #define SCL_VDEV 0x40 |
| #define SCL_LOCKS 7 |
| #define SCL_ALL ((1 << SCL_LOCKS) - 1) |
| #define SCL_STATE_ALL (SCL_STATE | SCL_L2ARC | SCL_ZIO) |
| |
| /* Historical pool statistics */ |
| typedef struct spa_history_kstat { |
| kmutex_t lock; |
| uint64_t count; |
| uint64_t size; |
| kstat_t *kstat; |
| void *private; |
| list_t list; |
| } spa_history_kstat_t; |
| |
| typedef struct spa_history_list { |
| uint64_t size; |
| procfs_list_t procfs_list; |
| } spa_history_list_t; |
| |
| typedef struct spa_stats { |
| spa_history_list_t read_history; |
| spa_history_list_t txg_history; |
| spa_history_kstat_t tx_assign_histogram; |
| spa_history_kstat_t io_history; |
| spa_history_list_t mmp_history; |
| spa_history_kstat_t state; /* pool state */ |
| spa_history_kstat_t iostats; |
| } spa_stats_t; |
| |
| typedef enum txg_state { |
| TXG_STATE_BIRTH = 0, |
| TXG_STATE_OPEN = 1, |
| TXG_STATE_QUIESCED = 2, |
| TXG_STATE_WAIT_FOR_SYNC = 3, |
| TXG_STATE_SYNCED = 4, |
| TXG_STATE_COMMITTED = 5, |
| } txg_state_t; |
| |
| typedef struct txg_stat { |
| vdev_stat_t vs1; |
| vdev_stat_t vs2; |
| uint64_t txg; |
| uint64_t ndirty; |
| } txg_stat_t; |
| |
| /* Assorted pool IO kstats */ |
| typedef struct spa_iostats { |
| kstat_named_t trim_extents_written; |
| kstat_named_t trim_bytes_written; |
| kstat_named_t trim_extents_skipped; |
| kstat_named_t trim_bytes_skipped; |
| kstat_named_t trim_extents_failed; |
| kstat_named_t trim_bytes_failed; |
| kstat_named_t autotrim_extents_written; |
| kstat_named_t autotrim_bytes_written; |
| kstat_named_t autotrim_extents_skipped; |
| kstat_named_t autotrim_bytes_skipped; |
| kstat_named_t autotrim_extents_failed; |
| kstat_named_t autotrim_bytes_failed; |
| } spa_iostats_t; |
| |
| extern void spa_stats_init(spa_t *spa); |
| extern void spa_stats_destroy(spa_t *spa); |
| extern void spa_read_history_add(spa_t *spa, const zbookmark_phys_t *zb, |
| uint32_t aflags); |
| extern void spa_txg_history_add(spa_t *spa, uint64_t txg, hrtime_t birth_time); |
| extern int spa_txg_history_set(spa_t *spa, uint64_t txg, |
| txg_state_t completed_state, hrtime_t completed_time); |
| extern txg_stat_t *spa_txg_history_init_io(spa_t *, uint64_t, |
| struct dsl_pool *); |
| extern void spa_txg_history_fini_io(spa_t *, txg_stat_t *); |
| extern void spa_tx_assign_add_nsecs(spa_t *spa, uint64_t nsecs); |
| extern int spa_mmp_history_set_skip(spa_t *spa, uint64_t mmp_kstat_id); |
| extern int spa_mmp_history_set(spa_t *spa, uint64_t mmp_kstat_id, int io_error, |
| hrtime_t duration); |
| extern void spa_mmp_history_add(spa_t *spa, uint64_t txg, uint64_t timestamp, |
| uint64_t mmp_delay, vdev_t *vd, int label, uint64_t mmp_kstat_id, |
| int error); |
| extern void spa_iostats_trim_add(spa_t *spa, trim_type_t type, |
| uint64_t extents_written, uint64_t bytes_written, |
| uint64_t extents_skipped, uint64_t bytes_skipped, |
| uint64_t extents_failed, uint64_t bytes_failed); |
| extern void spa_import_progress_add(spa_t *spa); |
| extern void spa_import_progress_remove(uint64_t spa_guid); |
| extern int spa_import_progress_set_mmp_check(uint64_t pool_guid, |
| uint64_t mmp_sec_remaining); |
| extern int spa_import_progress_set_max_txg(uint64_t pool_guid, |
| uint64_t max_txg); |
| extern int spa_import_progress_set_state(uint64_t pool_guid, |
| spa_load_state_t spa_load_state); |
| |
| /* Pool configuration locks */ |
| extern int spa_config_tryenter(spa_t *spa, int locks, void *tag, krw_t rw); |
| extern void spa_config_enter(spa_t *spa, int locks, const void *tag, krw_t rw); |
| extern void spa_config_exit(spa_t *spa, int locks, const void *tag); |
| extern int spa_config_held(spa_t *spa, int locks, krw_t rw); |
| |
| /* Pool vdev add/remove lock */ |
| extern uint64_t spa_vdev_enter(spa_t *spa); |
| extern uint64_t spa_vdev_config_enter(spa_t *spa); |
| extern void spa_vdev_config_exit(spa_t *spa, vdev_t *vd, uint64_t txg, |
| int error, char *tag); |
| extern int spa_vdev_exit(spa_t *spa, vdev_t *vd, uint64_t txg, int error); |
| |
| /* Pool vdev state change lock */ |
| extern void spa_vdev_state_enter(spa_t *spa, int oplock); |
| extern int spa_vdev_state_exit(spa_t *spa, vdev_t *vd, int error); |
| |
| /* Log state */ |
| typedef enum spa_log_state { |
| SPA_LOG_UNKNOWN = 0, /* unknown log state */ |
| SPA_LOG_MISSING, /* missing log(s) */ |
| SPA_LOG_CLEAR, /* clear the log(s) */ |
| SPA_LOG_GOOD, /* log(s) are good */ |
| } spa_log_state_t; |
| |
| extern spa_log_state_t spa_get_log_state(spa_t *spa); |
| extern void spa_set_log_state(spa_t *spa, spa_log_state_t state); |
| extern int spa_reset_logs(spa_t *spa); |
| |
| /* Log claim callback */ |
| extern void spa_claim_notify(zio_t *zio); |
| extern void spa_deadman(void *); |
| |
| /* Accessor functions */ |
| extern boolean_t spa_shutting_down(spa_t *spa); |
| extern struct dsl_pool *spa_get_dsl(spa_t *spa); |
| extern boolean_t spa_is_initializing(spa_t *spa); |
| extern boolean_t spa_indirect_vdevs_loaded(spa_t *spa); |
| extern blkptr_t *spa_get_rootblkptr(spa_t *spa); |
| extern void spa_set_rootblkptr(spa_t *spa, const blkptr_t *bp); |
| extern void spa_altroot(spa_t *, char *, size_t); |
| extern int spa_sync_pass(spa_t *spa); |
| extern char *spa_name(spa_t *spa); |
| extern uint64_t spa_guid(spa_t *spa); |
| extern uint64_t spa_load_guid(spa_t *spa); |
| extern uint64_t spa_last_synced_txg(spa_t *spa); |
| extern uint64_t spa_first_txg(spa_t *spa); |
| extern uint64_t spa_syncing_txg(spa_t *spa); |
| extern uint64_t spa_final_dirty_txg(spa_t *spa); |
| extern uint64_t spa_version(spa_t *spa); |
| extern pool_state_t spa_state(spa_t *spa); |
| extern spa_load_state_t spa_load_state(spa_t *spa); |
| extern uint64_t spa_freeze_txg(spa_t *spa); |
| extern uint64_t spa_get_worst_case_asize(spa_t *spa, uint64_t lsize); |
| extern uint64_t spa_get_dspace(spa_t *spa); |
| extern uint64_t spa_get_checkpoint_space(spa_t *spa); |
| extern uint64_t spa_get_slop_space(spa_t *spa); |
| extern void spa_update_dspace(spa_t *spa); |
| extern uint64_t spa_version(spa_t *spa); |
| extern boolean_t spa_deflate(spa_t *spa); |
| extern metaslab_class_t *spa_normal_class(spa_t *spa); |
| extern metaslab_class_t *spa_log_class(spa_t *spa); |
| extern metaslab_class_t *spa_special_class(spa_t *spa); |
| extern metaslab_class_t *spa_dedup_class(spa_t *spa); |
| extern metaslab_class_t *spa_preferred_class(spa_t *spa, uint64_t size, |
| dmu_object_type_t objtype, uint_t level, uint_t special_smallblk); |
| |
| extern void spa_evicting_os_register(spa_t *, objset_t *os); |
| extern void spa_evicting_os_deregister(spa_t *, objset_t *os); |
| extern void spa_evicting_os_wait(spa_t *spa); |
| extern int spa_max_replication(spa_t *spa); |
| extern int spa_prev_software_version(spa_t *spa); |
| extern uint64_t spa_get_failmode(spa_t *spa); |
| extern uint64_t spa_get_deadman_failmode(spa_t *spa); |
| extern void spa_set_deadman_failmode(spa_t *spa, const char *failmode); |
| extern boolean_t spa_suspended(spa_t *spa); |
| extern uint64_t spa_bootfs(spa_t *spa); |
| extern uint64_t spa_delegation(spa_t *spa); |
| extern objset_t *spa_meta_objset(spa_t *spa); |
| extern uint64_t spa_deadman_synctime(spa_t *spa); |
| extern uint64_t spa_deadman_ziotime(spa_t *spa); |
| extern uint64_t spa_dirty_data(spa_t *spa); |
| extern spa_autotrim_t spa_get_autotrim(spa_t *spa); |
| |
| /* Miscellaneous support routines */ |
| extern void spa_load_failed(spa_t *spa, const char *fmt, ...); |
| extern void spa_load_note(spa_t *spa, const char *fmt, ...); |
| extern void spa_activate_mos_feature(spa_t *spa, const char *feature, |
| dmu_tx_t *tx); |
| extern void spa_deactivate_mos_feature(spa_t *spa, const char *feature); |
| extern spa_t *spa_by_guid(uint64_t pool_guid, uint64_t device_guid); |
| extern boolean_t spa_guid_exists(uint64_t pool_guid, uint64_t device_guid); |
| extern char *spa_strdup(const char *); |
| extern void spa_strfree(char *); |
| extern uint64_t spa_get_random(uint64_t range); |
| extern uint64_t spa_generate_guid(spa_t *spa); |
| extern void snprintf_blkptr(char *buf, size_t buflen, const blkptr_t *bp); |
| extern void spa_freeze(spa_t *spa); |
| extern int spa_change_guid(spa_t *spa); |
| extern void spa_upgrade(spa_t *spa, uint64_t version); |
| extern void spa_evict_all(void); |
| extern vdev_t *spa_lookup_by_guid(spa_t *spa, uint64_t guid, |
| boolean_t l2cache); |
| extern boolean_t spa_has_spare(spa_t *, uint64_t guid); |
| extern uint64_t dva_get_dsize_sync(spa_t *spa, const dva_t *dva); |
| extern uint64_t bp_get_dsize_sync(spa_t *spa, const blkptr_t *bp); |
| extern uint64_t bp_get_dsize(spa_t *spa, const blkptr_t *bp); |
| extern boolean_t spa_has_slogs(spa_t *spa); |
| extern boolean_t spa_is_root(spa_t *spa); |
| extern boolean_t spa_writeable(spa_t *spa); |
| extern boolean_t spa_has_pending_synctask(spa_t *spa); |
| extern int spa_maxblocksize(spa_t *spa); |
| extern int spa_maxdnodesize(spa_t *spa); |
| extern boolean_t spa_has_checkpoint(spa_t *spa); |
| extern boolean_t spa_importing_readonly_checkpoint(spa_t *spa); |
| extern boolean_t spa_suspend_async_destroy(spa_t *spa); |
| extern uint64_t spa_min_claim_txg(spa_t *spa); |
| extern boolean_t zfs_dva_valid(spa_t *spa, const dva_t *dva, |
| const blkptr_t *bp); |
| typedef void (*spa_remap_cb_t)(uint64_t vdev, uint64_t offset, uint64_t size, |
| void *arg); |
| extern boolean_t spa_remap_blkptr(spa_t *spa, blkptr_t *bp, |
| spa_remap_cb_t callback, void *arg); |
| extern uint64_t spa_get_last_removal_txg(spa_t *spa); |
| extern boolean_t spa_trust_config(spa_t *spa); |
| extern uint64_t spa_missing_tvds_allowed(spa_t *spa); |
| extern void spa_set_missing_tvds(spa_t *spa, uint64_t missing); |
| extern boolean_t spa_top_vdevs_spacemap_addressable(spa_t *spa); |
| extern boolean_t spa_multihost(spa_t *spa); |
| extern uint32_t spa_get_hostid(spa_t *spa); |
| extern void spa_activate_allocation_classes(spa_t *, dmu_tx_t *); |
| |
| extern int spa_mode(spa_t *spa); |
| extern uint64_t zfs_strtonum(const char *str, char **nptr); |
| |
| extern char *spa_his_ievent_table[]; |
| |
| extern void spa_history_create_obj(spa_t *spa, dmu_tx_t *tx); |
| extern int spa_history_get(spa_t *spa, uint64_t *offset, uint64_t *len_read, |
| char *his_buf); |
| extern int spa_history_log(spa_t *spa, const char *his_buf); |
| extern int spa_history_log_nvl(spa_t *spa, nvlist_t *nvl); |
| extern void spa_history_log_version(spa_t *spa, const char *operation, |
| dmu_tx_t *tx); |
| extern void spa_history_log_internal(spa_t *spa, const char *operation, |
| dmu_tx_t *tx, const char *fmt, ...); |
| extern void spa_history_log_internal_ds(struct dsl_dataset *ds, const char *op, |
| dmu_tx_t *tx, const char *fmt, ...); |
| extern void spa_history_log_internal_dd(dsl_dir_t *dd, const char *operation, |
| dmu_tx_t *tx, const char *fmt, ...); |
| |
| extern const char *spa_state_to_name(spa_t *spa); |
| |
| /* error handling */ |
| struct zbookmark_phys; |
| extern void spa_log_error(spa_t *spa, const zbookmark_phys_t *zb); |
| extern int zfs_ereport_post(const char *class, spa_t *spa, vdev_t *vd, |
| const zbookmark_phys_t *zb, zio_t *zio, uint64_t stateoroffset, |
| uint64_t length); |
| extern boolean_t zfs_ereport_is_valid(const char *class, spa_t *spa, vdev_t *vd, |
| zio_t *zio); |
| extern nvlist_t *zfs_event_create(spa_t *spa, vdev_t *vd, const char *type, |
| const char *name, nvlist_t *aux); |
| extern void zfs_post_remove(spa_t *spa, vdev_t *vd); |
| extern void zfs_post_state_change(spa_t *spa, vdev_t *vd, uint64_t laststate); |
| extern void zfs_post_autoreplace(spa_t *spa, vdev_t *vd); |
| extern uint64_t spa_get_errlog_size(spa_t *spa); |
| extern int spa_get_errlog(spa_t *spa, void *uaddr, size_t *count); |
| extern void spa_errlog_rotate(spa_t *spa); |
| extern void spa_errlog_drain(spa_t *spa); |
| extern void spa_errlog_sync(spa_t *spa, uint64_t txg); |
| extern void spa_get_errlists(spa_t *spa, avl_tree_t *last, avl_tree_t *scrub); |
| |
| /* vdev cache */ |
| extern void vdev_cache_stat_init(void); |
| extern void vdev_cache_stat_fini(void); |
| |
| /* vdev mirror */ |
| extern void vdev_mirror_stat_init(void); |
| extern void vdev_mirror_stat_fini(void); |
| |
| /* Initialization and termination */ |
| extern void spa_init(int flags); |
| extern void spa_fini(void); |
| extern void spa_boot_init(void); |
| |
| /* properties */ |
| extern int spa_prop_set(spa_t *spa, nvlist_t *nvp); |
| extern int spa_prop_get(spa_t *spa, nvlist_t **nvp); |
| extern void spa_prop_clear_bootfs(spa_t *spa, uint64_t obj, dmu_tx_t *tx); |
| extern void spa_configfile_set(spa_t *, nvlist_t *, boolean_t); |
| |
| /* asynchronous event notification */ |
| extern void spa_event_notify(spa_t *spa, vdev_t *vdev, nvlist_t *hist_nvl, |
| const char *name); |
| |
| #ifdef ZFS_DEBUG |
| #define dprintf_bp(bp, fmt, ...) do { \ |
| if (zfs_flags & ZFS_DEBUG_DPRINTF) { \ |
| char *__blkbuf = kmem_alloc(BP_SPRINTF_LEN, KM_SLEEP); \ |
| snprintf_blkptr(__blkbuf, BP_SPRINTF_LEN, (bp)); \ |
| dprintf(fmt " %s\n", __VA_ARGS__, __blkbuf); \ |
| kmem_free(__blkbuf, BP_SPRINTF_LEN); \ |
| } \ |
| _NOTE(CONSTCOND) } while (0) |
| #else |
| #define dprintf_bp(bp, fmt, ...) |
| #endif |
| |
| extern int spa_mode_global; /* mode, e.g. FREAD | FWRITE */ |
| extern int zfs_deadman_enabled; |
| extern unsigned long zfs_deadman_synctime_ms; |
| extern unsigned long zfs_deadman_ziotime_ms; |
| extern unsigned long zfs_deadman_checktime_ms; |
| |
| #ifdef __cplusplus |
| } |
| #endif |
| |
| #endif /* _SYS_SPA_H */ |