spa.h revision 1195e687f1c03c8d57417b5999578922e20a3554
843e19887f64dde75055cf8842fc4db2171eff45johnlev/*
843e19887f64dde75055cf8842fc4db2171eff45johnlev * CDDL HEADER START
843e19887f64dde75055cf8842fc4db2171eff45johnlev *
843e19887f64dde75055cf8842fc4db2171eff45johnlev * The contents of this file are subject to the terms of the
843e19887f64dde75055cf8842fc4db2171eff45johnlev * Common Development and Distribution License (the "License").
843e19887f64dde75055cf8842fc4db2171eff45johnlev * You may not use this file except in compliance with the License.
843e19887f64dde75055cf8842fc4db2171eff45johnlev *
843e19887f64dde75055cf8842fc4db2171eff45johnlev * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
843e19887f64dde75055cf8842fc4db2171eff45johnlev * or http://www.opensolaris.org/os/licensing.
843e19887f64dde75055cf8842fc4db2171eff45johnlev * See the License for the specific language governing permissions
843e19887f64dde75055cf8842fc4db2171eff45johnlev * and limitations under the License.
843e19887f64dde75055cf8842fc4db2171eff45johnlev *
843e19887f64dde75055cf8842fc4db2171eff45johnlev * When distributing Covered Code, include this CDDL HEADER in each
843e19887f64dde75055cf8842fc4db2171eff45johnlev * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
843e19887f64dde75055cf8842fc4db2171eff45johnlev * If applicable, add the following below this CDDL HEADER, with the
843e19887f64dde75055cf8842fc4db2171eff45johnlev * fields enclosed by brackets "[]" replaced with your own identifying
843e19887f64dde75055cf8842fc4db2171eff45johnlev * information: Portions Copyright [yyyy] [name of copyright owner]
843e19887f64dde75055cf8842fc4db2171eff45johnlev *
843e19887f64dde75055cf8842fc4db2171eff45johnlev * CDDL HEADER END
843e19887f64dde75055cf8842fc4db2171eff45johnlev */
843e19887f64dde75055cf8842fc4db2171eff45johnlev/*
843e19887f64dde75055cf8842fc4db2171eff45johnlev * Copyright 2010 Sun Microsystems, Inc. All rights reserved.
843e19887f64dde75055cf8842fc4db2171eff45johnlev * Use is subject to license terms.
843e19887f64dde75055cf8842fc4db2171eff45johnlev */
843e19887f64dde75055cf8842fc4db2171eff45johnlev
843e19887f64dde75055cf8842fc4db2171eff45johnlev#ifndef _SYS_SPA_H
843e19887f64dde75055cf8842fc4db2171eff45johnlev#define _SYS_SPA_H
843e19887f64dde75055cf8842fc4db2171eff45johnlev
843e19887f64dde75055cf8842fc4db2171eff45johnlev#include <sys/avl.h>
843e19887f64dde75055cf8842fc4db2171eff45johnlev#include <sys/zfs_context.h>
843e19887f64dde75055cf8842fc4db2171eff45johnlev#include <sys/nvpair.h>
843e19887f64dde75055cf8842fc4db2171eff45johnlev#include <sys/sysmacros.h>
843e19887f64dde75055cf8842fc4db2171eff45johnlev#include <sys/types.h>
843e19887f64dde75055cf8842fc4db2171eff45johnlev#include <sys/fs/zfs.h>
843e19887f64dde75055cf8842fc4db2171eff45johnlev
843e19887f64dde75055cf8842fc4db2171eff45johnlev#ifdef __cplusplus
843e19887f64dde75055cf8842fc4db2171eff45johnlevextern "C" {
843e19887f64dde75055cf8842fc4db2171eff45johnlev#endif
843e19887f64dde75055cf8842fc4db2171eff45johnlev
843e19887f64dde75055cf8842fc4db2171eff45johnlev/*
843e19887f64dde75055cf8842fc4db2171eff45johnlev * Forward references that lots of things need.
843e19887f64dde75055cf8842fc4db2171eff45johnlev */
843e19887f64dde75055cf8842fc4db2171eff45johnlevtypedef struct spa spa_t;
843e19887f64dde75055cf8842fc4db2171eff45johnlevtypedef struct vdev vdev_t;
843e19887f64dde75055cf8842fc4db2171eff45johnlevtypedef struct metaslab metaslab_t;
843e19887f64dde75055cf8842fc4db2171eff45johnlevtypedef struct metaslab_group metaslab_group_t;
843e19887f64dde75055cf8842fc4db2171eff45johnlevtypedef struct metaslab_class metaslab_class_t;
843e19887f64dde75055cf8842fc4db2171eff45johnlevtypedef struct zio zio_t;
843e19887f64dde75055cf8842fc4db2171eff45johnlevtypedef struct zilog zilog_t;
843e19887f64dde75055cf8842fc4db2171eff45johnlevtypedef struct spa_aux_vdev spa_aux_vdev_t;
843e19887f64dde75055cf8842fc4db2171eff45johnlevtypedef struct ddt ddt_t;
843e19887f64dde75055cf8842fc4db2171eff45johnlevtypedef struct ddt_entry ddt_entry_t;
843e19887f64dde75055cf8842fc4db2171eff45johnlevstruct dsl_pool;
843e19887f64dde75055cf8842fc4db2171eff45johnlev
843e19887f64dde75055cf8842fc4db2171eff45johnlev/*
843e19887f64dde75055cf8842fc4db2171eff45johnlev * General-purpose 32-bit and 64-bit bitfield encodings.
843e19887f64dde75055cf8842fc4db2171eff45johnlev */
843e19887f64dde75055cf8842fc4db2171eff45johnlev#define BF32_DECODE(x, low, len) P2PHASE((x) >> (low), 1U << (len))
843e19887f64dde75055cf8842fc4db2171eff45johnlev#define BF64_DECODE(x, low, len) P2PHASE((x) >> (low), 1ULL << (len))
843e19887f64dde75055cf8842fc4db2171eff45johnlev#define BF32_ENCODE(x, low, len) (P2PHASE((x), 1U << (len)) << (low))
843e19887f64dde75055cf8842fc4db2171eff45johnlev#define BF64_ENCODE(x, low, len) (P2PHASE((x), 1ULL << (len)) << (low))
843e19887f64dde75055cf8842fc4db2171eff45johnlev
843e19887f64dde75055cf8842fc4db2171eff45johnlev#define BF32_GET(x, low, len) BF32_DECODE(x, low, len)
843e19887f64dde75055cf8842fc4db2171eff45johnlev#define BF64_GET(x, low, len) BF64_DECODE(x, low, len)
843e19887f64dde75055cf8842fc4db2171eff45johnlev
843e19887f64dde75055cf8842fc4db2171eff45johnlev#define BF32_SET(x, low, len, val) \
843e19887f64dde75055cf8842fc4db2171eff45johnlev ((x) ^= BF32_ENCODE((x >> low) ^ (val), low, len))
843e19887f64dde75055cf8842fc4db2171eff45johnlev#define BF64_SET(x, low, len, val) \
843e19887f64dde75055cf8842fc4db2171eff45johnlev ((x) ^= BF64_ENCODE((x >> low) ^ (val), low, len))
843e19887f64dde75055cf8842fc4db2171eff45johnlev
843e19887f64dde75055cf8842fc4db2171eff45johnlev#define BF32_GET_SB(x, low, len, shift, bias) \
843e19887f64dde75055cf8842fc4db2171eff45johnlev ((BF32_GET(x, low, len) + (bias)) << (shift))
843e19887f64dde75055cf8842fc4db2171eff45johnlev#define BF64_GET_SB(x, low, len, shift, bias) \
843e19887f64dde75055cf8842fc4db2171eff45johnlev ((BF64_GET(x, low, len) + (bias)) << (shift))
843e19887f64dde75055cf8842fc4db2171eff45johnlev
843e19887f64dde75055cf8842fc4db2171eff45johnlev#define BF32_SET_SB(x, low, len, shift, bias, val) \
843e19887f64dde75055cf8842fc4db2171eff45johnlev BF32_SET(x, low, len, ((val) >> (shift)) - (bias))
843e19887f64dde75055cf8842fc4db2171eff45johnlev#define BF64_SET_SB(x, low, len, shift, bias, val) \
843e19887f64dde75055cf8842fc4db2171eff45johnlev BF64_SET(x, low, len, ((val) >> (shift)) - (bias))
843e19887f64dde75055cf8842fc4db2171eff45johnlev
843e19887f64dde75055cf8842fc4db2171eff45johnlev/*
843e19887f64dde75055cf8842fc4db2171eff45johnlev * We currently support nine block sizes, from 512 bytes to 128K.
843e19887f64dde75055cf8842fc4db2171eff45johnlev * We could go higher, but the benefits are near-zero and the cost
843e19887f64dde75055cf8842fc4db2171eff45johnlev * of COWing a giant block to modify one byte would become excessive.
843e19887f64dde75055cf8842fc4db2171eff45johnlev */
843e19887f64dde75055cf8842fc4db2171eff45johnlev#define SPA_MINBLOCKSHIFT 9
843e19887f64dde75055cf8842fc4db2171eff45johnlev#define SPA_MAXBLOCKSHIFT 17
843e19887f64dde75055cf8842fc4db2171eff45johnlev#define SPA_MINBLOCKSIZE (1ULL << SPA_MINBLOCKSHIFT)
843e19887f64dde75055cf8842fc4db2171eff45johnlev#define SPA_MAXBLOCKSIZE (1ULL << SPA_MAXBLOCKSHIFT)
843e19887f64dde75055cf8842fc4db2171eff45johnlev
843e19887f64dde75055cf8842fc4db2171eff45johnlev#define SPA_BLOCKSIZES (SPA_MAXBLOCKSHIFT - SPA_MINBLOCKSHIFT + 1)
843e19887f64dde75055cf8842fc4db2171eff45johnlev
843e19887f64dde75055cf8842fc4db2171eff45johnlev/*
843e19887f64dde75055cf8842fc4db2171eff45johnlev * Size of block to hold the configuration data (a packed nvlist)
843e19887f64dde75055cf8842fc4db2171eff45johnlev */
843e19887f64dde75055cf8842fc4db2171eff45johnlev#define SPA_CONFIG_BLOCKSIZE (1 << 14)
843e19887f64dde75055cf8842fc4db2171eff45johnlev
843e19887f64dde75055cf8842fc4db2171eff45johnlev/*
843e19887f64dde75055cf8842fc4db2171eff45johnlev * The DVA size encodings for LSIZE and PSIZE support blocks up to 32MB.
843e19887f64dde75055cf8842fc4db2171eff45johnlev * The ASIZE encoding should be at least 64 times larger (6 more bits)
843e19887f64dde75055cf8842fc4db2171eff45johnlev * to support up to 4-way RAID-Z mirror mode with worst-case gang block
843e19887f64dde75055cf8842fc4db2171eff45johnlev * overhead, three DVAs per bp, plus one more bit in case we do anything
843e19887f64dde75055cf8842fc4db2171eff45johnlev * else that expands the ASIZE.
843e19887f64dde75055cf8842fc4db2171eff45johnlev */
843e19887f64dde75055cf8842fc4db2171eff45johnlev#define SPA_LSIZEBITS 16 /* LSIZE up to 32M (2^16 * 512) */
843e19887f64dde75055cf8842fc4db2171eff45johnlev#define SPA_PSIZEBITS 16 /* PSIZE up to 32M (2^16 * 512) */
843e19887f64dde75055cf8842fc4db2171eff45johnlev#define SPA_ASIZEBITS 24 /* ASIZE up to 64 times larger */
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw
843e19887f64dde75055cf8842fc4db2171eff45johnlev/*
843e19887f64dde75055cf8842fc4db2171eff45johnlev * All SPA data is represented by 128-bit data virtual addresses (DVAs).
843e19887f64dde75055cf8842fc4db2171eff45johnlev * The members of the dva_t should be considered opaque outside the SPA.
843e19887f64dde75055cf8842fc4db2171eff45johnlev */
843e19887f64dde75055cf8842fc4db2171eff45johnlevtypedef struct dva {
843e19887f64dde75055cf8842fc4db2171eff45johnlev uint64_t dva_word[2];
843e19887f64dde75055cf8842fc4db2171eff45johnlev} dva_t;
843e19887f64dde75055cf8842fc4db2171eff45johnlev
843e19887f64dde75055cf8842fc4db2171eff45johnlev/*
843e19887f64dde75055cf8842fc4db2171eff45johnlev * Each block has a 256-bit checksum -- strong enough for cryptographic hashes.
843e19887f64dde75055cf8842fc4db2171eff45johnlev */
843e19887f64dde75055cf8842fc4db2171eff45johnlevtypedef struct zio_cksum {
843e19887f64dde75055cf8842fc4db2171eff45johnlev uint64_t zc_word[4];
843e19887f64dde75055cf8842fc4db2171eff45johnlev} zio_cksum_t;
843e19887f64dde75055cf8842fc4db2171eff45johnlev
843e19887f64dde75055cf8842fc4db2171eff45johnlev/*
843e19887f64dde75055cf8842fc4db2171eff45johnlev * Each block is described by its DVAs, time of birth, checksum, etc.
843e19887f64dde75055cf8842fc4db2171eff45johnlev * The word-by-word, bit-by-bit layout of the blkptr is as follows:
843e19887f64dde75055cf8842fc4db2171eff45johnlev *
843e19887f64dde75055cf8842fc4db2171eff45johnlev * 64 56 48 40 32 24 16 8 0
843e19887f64dde75055cf8842fc4db2171eff45johnlev * +-------+-------+-------+-------+-------+-------+-------+-------+
843e19887f64dde75055cf8842fc4db2171eff45johnlev * 0 | vdev1 | GRID | ASIZE |
843e19887f64dde75055cf8842fc4db2171eff45johnlev * +-------+-------+-------+-------+-------+-------+-------+-------+
843e19887f64dde75055cf8842fc4db2171eff45johnlev * 1 |G| offset1 |
843e19887f64dde75055cf8842fc4db2171eff45johnlev * +-------+-------+-------+-------+-------+-------+-------+-------+
843e19887f64dde75055cf8842fc4db2171eff45johnlev * 2 | vdev2 | GRID | ASIZE |
843e19887f64dde75055cf8842fc4db2171eff45johnlev * +-------+-------+-------+-------+-------+-------+-------+-------+
843e19887f64dde75055cf8842fc4db2171eff45johnlev * 3 |G| offset2 |
843e19887f64dde75055cf8842fc4db2171eff45johnlev * +-------+-------+-------+-------+-------+-------+-------+-------+
843e19887f64dde75055cf8842fc4db2171eff45johnlev * 4 | vdev3 | GRID | ASIZE |
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw * +-------+-------+-------+-------+-------+-------+-------+-------+
843e19887f64dde75055cf8842fc4db2171eff45johnlev * 5 |G| offset3 |
843e19887f64dde75055cf8842fc4db2171eff45johnlev * +-------+-------+-------+-------+-------+-------+-------+-------+
843e19887f64dde75055cf8842fc4db2171eff45johnlev * 6 |BDX|lvl| type | cksum | comp | PSIZE | LSIZE |
843e19887f64dde75055cf8842fc4db2171eff45johnlev * +-------+-------+-------+-------+-------+-------+-------+-------+
843e19887f64dde75055cf8842fc4db2171eff45johnlev * 7 | padding |
843e19887f64dde75055cf8842fc4db2171eff45johnlev * +-------+-------+-------+-------+-------+-------+-------+-------+
843e19887f64dde75055cf8842fc4db2171eff45johnlev * 8 | padding |
843e19887f64dde75055cf8842fc4db2171eff45johnlev * +-------+-------+-------+-------+-------+-------+-------+-------+
843e19887f64dde75055cf8842fc4db2171eff45johnlev * 9 | physical birth txg |
843e19887f64dde75055cf8842fc4db2171eff45johnlev * +-------+-------+-------+-------+-------+-------+-------+-------+
843e19887f64dde75055cf8842fc4db2171eff45johnlev * a | logical birth txg |
843e19887f64dde75055cf8842fc4db2171eff45johnlev * +-------+-------+-------+-------+-------+-------+-------+-------+
843e19887f64dde75055cf8842fc4db2171eff45johnlev * b | fill count |
843e19887f64dde75055cf8842fc4db2171eff45johnlev * +-------+-------+-------+-------+-------+-------+-------+-------+
843e19887f64dde75055cf8842fc4db2171eff45johnlev * c | checksum[0] |
843e19887f64dde75055cf8842fc4db2171eff45johnlev * +-------+-------+-------+-------+-------+-------+-------+-------+
843e19887f64dde75055cf8842fc4db2171eff45johnlev * d | checksum[1] |
843e19887f64dde75055cf8842fc4db2171eff45johnlev * +-------+-------+-------+-------+-------+-------+-------+-------+
843e19887f64dde75055cf8842fc4db2171eff45johnlev * e | checksum[2] |
843e19887f64dde75055cf8842fc4db2171eff45johnlev * +-------+-------+-------+-------+-------+-------+-------+-------+
843e19887f64dde75055cf8842fc4db2171eff45johnlev * f | checksum[3] |
843e19887f64dde75055cf8842fc4db2171eff45johnlev * +-------+-------+-------+-------+-------+-------+-------+-------+
843e19887f64dde75055cf8842fc4db2171eff45johnlev *
843e19887f64dde75055cf8842fc4db2171eff45johnlev * Legend:
843e19887f64dde75055cf8842fc4db2171eff45johnlev *
843e19887f64dde75055cf8842fc4db2171eff45johnlev * vdev virtual device ID
843e19887f64dde75055cf8842fc4db2171eff45johnlev * offset offset into virtual device
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw * LSIZE logical size
843e19887f64dde75055cf8842fc4db2171eff45johnlev * PSIZE physical size (after compression)
843e19887f64dde75055cf8842fc4db2171eff45johnlev * ASIZE allocated size (including RAID-Z parity and gang block headers)
843e19887f64dde75055cf8842fc4db2171eff45johnlev * GRID RAID-Z layout information (reserved for future use)
843e19887f64dde75055cf8842fc4db2171eff45johnlev * cksum checksum function
843e19887f64dde75055cf8842fc4db2171eff45johnlev * comp compression function
843e19887f64dde75055cf8842fc4db2171eff45johnlev * G gang block indicator
843e19887f64dde75055cf8842fc4db2171eff45johnlev * B byteorder (endianness)
843e19887f64dde75055cf8842fc4db2171eff45johnlev * D dedup
843e19887f64dde75055cf8842fc4db2171eff45johnlev * X unused
843e19887f64dde75055cf8842fc4db2171eff45johnlev * lvl level of indirection
843e19887f64dde75055cf8842fc4db2171eff45johnlev * type DMU object type
843e19887f64dde75055cf8842fc4db2171eff45johnlev * phys birth txg of block allocation; zero if same as logical birth txg
843e19887f64dde75055cf8842fc4db2171eff45johnlev * log. birth transaction group in which the block was logically born
843e19887f64dde75055cf8842fc4db2171eff45johnlev * fill count number of non-zero blocks under this bp
843e19887f64dde75055cf8842fc4db2171eff45johnlev * checksum[4] 256-bit checksum of the data this bp describes
843e19887f64dde75055cf8842fc4db2171eff45johnlev */
843e19887f64dde75055cf8842fc4db2171eff45johnlev#define SPA_BLKPTRSHIFT 7 /* blkptr_t is 128 bytes */
843e19887f64dde75055cf8842fc4db2171eff45johnlev#define SPA_DVAS_PER_BP 3 /* Number of DVAs in a bp */
843e19887f64dde75055cf8842fc4db2171eff45johnlev
843e19887f64dde75055cf8842fc4db2171eff45johnlevtypedef struct blkptr {
843e19887f64dde75055cf8842fc4db2171eff45johnlev dva_t blk_dva[SPA_DVAS_PER_BP]; /* Data Virtual Addresses */
843e19887f64dde75055cf8842fc4db2171eff45johnlev uint64_t blk_prop; /* size, compression, type, etc */
843e19887f64dde75055cf8842fc4db2171eff45johnlev uint64_t blk_pad[2]; /* Extra space for the future */
843e19887f64dde75055cf8842fc4db2171eff45johnlev uint64_t blk_phys_birth; /* txg when block was allocated */
843e19887f64dde75055cf8842fc4db2171eff45johnlev uint64_t blk_birth; /* transaction group at birth */
843e19887f64dde75055cf8842fc4db2171eff45johnlev uint64_t blk_fill; /* fill count */
843e19887f64dde75055cf8842fc4db2171eff45johnlev zio_cksum_t blk_cksum; /* 256-bit checksum */
843e19887f64dde75055cf8842fc4db2171eff45johnlev} blkptr_t;
843e19887f64dde75055cf8842fc4db2171eff45johnlev
843e19887f64dde75055cf8842fc4db2171eff45johnlev/*
843e19887f64dde75055cf8842fc4db2171eff45johnlev * Macros to get and set fields in a bp or DVA.
843e19887f64dde75055cf8842fc4db2171eff45johnlev */
843e19887f64dde75055cf8842fc4db2171eff45johnlev#define DVA_GET_ASIZE(dva) \
843e19887f64dde75055cf8842fc4db2171eff45johnlev BF64_GET_SB((dva)->dva_word[0], 0, 24, SPA_MINBLOCKSHIFT, 0)
843e19887f64dde75055cf8842fc4db2171eff45johnlev#define DVA_SET_ASIZE(dva, x) \
843e19887f64dde75055cf8842fc4db2171eff45johnlev BF64_SET_SB((dva)->dva_word[0], 0, 24, SPA_MINBLOCKSHIFT, 0, x)
843e19887f64dde75055cf8842fc4db2171eff45johnlev
843e19887f64dde75055cf8842fc4db2171eff45johnlev#define DVA_GET_GRID(dva) BF64_GET((dva)->dva_word[0], 24, 8)
843e19887f64dde75055cf8842fc4db2171eff45johnlev#define DVA_SET_GRID(dva, x) BF64_SET((dva)->dva_word[0], 24, 8, x)
843e19887f64dde75055cf8842fc4db2171eff45johnlev
843e19887f64dde75055cf8842fc4db2171eff45johnlev#define DVA_GET_VDEV(dva) BF64_GET((dva)->dva_word[0], 32, 32)
843e19887f64dde75055cf8842fc4db2171eff45johnlev#define DVA_SET_VDEV(dva, x) BF64_SET((dva)->dva_word[0], 32, 32, x)
843e19887f64dde75055cf8842fc4db2171eff45johnlev
843e19887f64dde75055cf8842fc4db2171eff45johnlev#define DVA_GET_OFFSET(dva) \
843e19887f64dde75055cf8842fc4db2171eff45johnlev BF64_GET_SB((dva)->dva_word[1], 0, 63, SPA_MINBLOCKSHIFT, 0)
843e19887f64dde75055cf8842fc4db2171eff45johnlev#define DVA_SET_OFFSET(dva, x) \
843e19887f64dde75055cf8842fc4db2171eff45johnlev BF64_SET_SB((dva)->dva_word[1], 0, 63, SPA_MINBLOCKSHIFT, 0, x)
843e19887f64dde75055cf8842fc4db2171eff45johnlev
843e19887f64dde75055cf8842fc4db2171eff45johnlev#define DVA_GET_GANG(dva) BF64_GET((dva)->dva_word[1], 63, 1)
843e19887f64dde75055cf8842fc4db2171eff45johnlev#define DVA_SET_GANG(dva, x) BF64_SET((dva)->dva_word[1], 63, 1, x)
843e19887f64dde75055cf8842fc4db2171eff45johnlev
843e19887f64dde75055cf8842fc4db2171eff45johnlev#define BP_GET_LSIZE(bp) \
843e19887f64dde75055cf8842fc4db2171eff45johnlev BF64_GET_SB((bp)->blk_prop, 0, 16, SPA_MINBLOCKSHIFT, 1)
843e19887f64dde75055cf8842fc4db2171eff45johnlev#define BP_SET_LSIZE(bp, x) \
843e19887f64dde75055cf8842fc4db2171eff45johnlev BF64_SET_SB((bp)->blk_prop, 0, 16, SPA_MINBLOCKSHIFT, 1, x)
843e19887f64dde75055cf8842fc4db2171eff45johnlev
843e19887f64dde75055cf8842fc4db2171eff45johnlev#define BP_GET_PSIZE(bp) \
843e19887f64dde75055cf8842fc4db2171eff45johnlev BF64_GET_SB((bp)->blk_prop, 16, 16, SPA_MINBLOCKSHIFT, 1)
843e19887f64dde75055cf8842fc4db2171eff45johnlev#define BP_SET_PSIZE(bp, x) \
843e19887f64dde75055cf8842fc4db2171eff45johnlev BF64_SET_SB((bp)->blk_prop, 16, 16, SPA_MINBLOCKSHIFT, 1, x)
843e19887f64dde75055cf8842fc4db2171eff45johnlev
843e19887f64dde75055cf8842fc4db2171eff45johnlev#define BP_GET_COMPRESS(bp) BF64_GET((bp)->blk_prop, 32, 8)
843e19887f64dde75055cf8842fc4db2171eff45johnlev#define BP_SET_COMPRESS(bp, x) BF64_SET((bp)->blk_prop, 32, 8, x)
843e19887f64dde75055cf8842fc4db2171eff45johnlev
843e19887f64dde75055cf8842fc4db2171eff45johnlev#define BP_GET_CHECKSUM(bp) BF64_GET((bp)->blk_prop, 40, 8)
843e19887f64dde75055cf8842fc4db2171eff45johnlev#define BP_SET_CHECKSUM(bp, x) BF64_SET((bp)->blk_prop, 40, 8, x)
843e19887f64dde75055cf8842fc4db2171eff45johnlev
843e19887f64dde75055cf8842fc4db2171eff45johnlev#define BP_GET_TYPE(bp) BF64_GET((bp)->blk_prop, 48, 8)
843e19887f64dde75055cf8842fc4db2171eff45johnlev#define BP_SET_TYPE(bp, x) BF64_SET((bp)->blk_prop, 48, 8, x)
843e19887f64dde75055cf8842fc4db2171eff45johnlev
843e19887f64dde75055cf8842fc4db2171eff45johnlev#define BP_GET_LEVEL(bp) BF64_GET((bp)->blk_prop, 56, 5)
843e19887f64dde75055cf8842fc4db2171eff45johnlev#define BP_SET_LEVEL(bp, x) BF64_SET((bp)->blk_prop, 56, 5, x)
843e19887f64dde75055cf8842fc4db2171eff45johnlev
843e19887f64dde75055cf8842fc4db2171eff45johnlev#define BP_GET_PROP_BIT_61(bp) BF64_GET((bp)->blk_prop, 61, 1)
843e19887f64dde75055cf8842fc4db2171eff45johnlev#define BP_SET_PROP_BIT_61(bp, x) BF64_SET((bp)->blk_prop, 61, 1, x)
843e19887f64dde75055cf8842fc4db2171eff45johnlev
843e19887f64dde75055cf8842fc4db2171eff45johnlev#define BP_GET_DEDUP(bp) BF64_GET((bp)->blk_prop, 62, 1)
843e19887f64dde75055cf8842fc4db2171eff45johnlev#define BP_SET_DEDUP(bp, x) BF64_SET((bp)->blk_prop, 62, 1, x)
843e19887f64dde75055cf8842fc4db2171eff45johnlev
843e19887f64dde75055cf8842fc4db2171eff45johnlev#define BP_GET_BYTEORDER(bp) (0 - BF64_GET((bp)->blk_prop, 63, 1))
843e19887f64dde75055cf8842fc4db2171eff45johnlev#define BP_SET_BYTEORDER(bp, x) BF64_SET((bp)->blk_prop, 63, 1, x)
843e19887f64dde75055cf8842fc4db2171eff45johnlev
843e19887f64dde75055cf8842fc4db2171eff45johnlev#define BP_PHYSICAL_BIRTH(bp) \
843e19887f64dde75055cf8842fc4db2171eff45johnlev ((bp)->blk_phys_birth ? (bp)->blk_phys_birth : (bp)->blk_birth)
843e19887f64dde75055cf8842fc4db2171eff45johnlev
843e19887f64dde75055cf8842fc4db2171eff45johnlev#define BP_SET_BIRTH(bp, logical, physical) \
843e19887f64dde75055cf8842fc4db2171eff45johnlev{ \
843e19887f64dde75055cf8842fc4db2171eff45johnlev (bp)->blk_birth = (logical); \
843e19887f64dde75055cf8842fc4db2171eff45johnlev (bp)->blk_phys_birth = ((logical) == (physical) ? 0 : (physical)); \
843e19887f64dde75055cf8842fc4db2171eff45johnlev}
843e19887f64dde75055cf8842fc4db2171eff45johnlev
843e19887f64dde75055cf8842fc4db2171eff45johnlev#define BP_GET_ASIZE(bp) \
843e19887f64dde75055cf8842fc4db2171eff45johnlev (DVA_GET_ASIZE(&(bp)->blk_dva[0]) + DVA_GET_ASIZE(&(bp)->blk_dva[1]) + \
843e19887f64dde75055cf8842fc4db2171eff45johnlev DVA_GET_ASIZE(&(bp)->blk_dva[2]))
843e19887f64dde75055cf8842fc4db2171eff45johnlev
843e19887f64dde75055cf8842fc4db2171eff45johnlev#define BP_GET_UCSIZE(bp) \
843e19887f64dde75055cf8842fc4db2171eff45johnlev ((BP_GET_LEVEL(bp) > 0 || dmu_ot[BP_GET_TYPE(bp)].ot_metadata) ? \
843e19887f64dde75055cf8842fc4db2171eff45johnlev BP_GET_PSIZE(bp) : BP_GET_LSIZE(bp));
843e19887f64dde75055cf8842fc4db2171eff45johnlev
843e19887f64dde75055cf8842fc4db2171eff45johnlev#define BP_GET_NDVAS(bp) \
843e19887f64dde75055cf8842fc4db2171eff45johnlev (!!DVA_GET_ASIZE(&(bp)->blk_dva[0]) + \
843e19887f64dde75055cf8842fc4db2171eff45johnlev !!DVA_GET_ASIZE(&(bp)->blk_dva[1]) + \
843e19887f64dde75055cf8842fc4db2171eff45johnlev !!DVA_GET_ASIZE(&(bp)->blk_dva[2]))
843e19887f64dde75055cf8842fc4db2171eff45johnlev
843e19887f64dde75055cf8842fc4db2171eff45johnlev#define BP_COUNT_GANG(bp) \
843e19887f64dde75055cf8842fc4db2171eff45johnlev (DVA_GET_GANG(&(bp)->blk_dva[0]) + \
843e19887f64dde75055cf8842fc4db2171eff45johnlev DVA_GET_GANG(&(bp)->blk_dva[1]) + \
843e19887f64dde75055cf8842fc4db2171eff45johnlev DVA_GET_GANG(&(bp)->blk_dva[2]))
843e19887f64dde75055cf8842fc4db2171eff45johnlev
843e19887f64dde75055cf8842fc4db2171eff45johnlev#define DVA_EQUAL(dva1, dva2) \
843e19887f64dde75055cf8842fc4db2171eff45johnlev ((dva1)->dva_word[1] == (dva2)->dva_word[1] && \
843e19887f64dde75055cf8842fc4db2171eff45johnlev (dva1)->dva_word[0] == (dva2)->dva_word[0])
843e19887f64dde75055cf8842fc4db2171eff45johnlev
843e19887f64dde75055cf8842fc4db2171eff45johnlev#define BP_EQUAL(bp1, bp2) \
843e19887f64dde75055cf8842fc4db2171eff45johnlev (BP_PHYSICAL_BIRTH(bp1) == BP_PHYSICAL_BIRTH(bp2) && \
843e19887f64dde75055cf8842fc4db2171eff45johnlev DVA_EQUAL(&(bp1)->blk_dva[0], &(bp2)->blk_dva[0]) && \
843e19887f64dde75055cf8842fc4db2171eff45johnlev DVA_EQUAL(&(bp1)->blk_dva[1], &(bp2)->blk_dva[1]) && \
843e19887f64dde75055cf8842fc4db2171eff45johnlev DVA_EQUAL(&(bp1)->blk_dva[2], &(bp2)->blk_dva[2]))
843e19887f64dde75055cf8842fc4db2171eff45johnlev
843e19887f64dde75055cf8842fc4db2171eff45johnlev#define ZIO_CHECKSUM_EQUAL(zc1, zc2) \
843e19887f64dde75055cf8842fc4db2171eff45johnlev (0 == (((zc1).zc_word[0] - (zc2).zc_word[0]) | \
843e19887f64dde75055cf8842fc4db2171eff45johnlev ((zc1).zc_word[1] - (zc2).zc_word[1]) | \
843e19887f64dde75055cf8842fc4db2171eff45johnlev ((zc1).zc_word[2] - (zc2).zc_word[2]) | \
843e19887f64dde75055cf8842fc4db2171eff45johnlev ((zc1).zc_word[3] - (zc2).zc_word[3])))
843e19887f64dde75055cf8842fc4db2171eff45johnlev
843e19887f64dde75055cf8842fc4db2171eff45johnlev#define DVA_IS_VALID(dva) (DVA_GET_ASIZE(dva) != 0)
843e19887f64dde75055cf8842fc4db2171eff45johnlev
843e19887f64dde75055cf8842fc4db2171eff45johnlev#define ZIO_SET_CHECKSUM(zcp, w0, w1, w2, w3) \
843e19887f64dde75055cf8842fc4db2171eff45johnlev{ \
843e19887f64dde75055cf8842fc4db2171eff45johnlev (zcp)->zc_word[0] = w0; \
843e19887f64dde75055cf8842fc4db2171eff45johnlev (zcp)->zc_word[1] = w1; \
843e19887f64dde75055cf8842fc4db2171eff45johnlev (zcp)->zc_word[2] = w2; \
843e19887f64dde75055cf8842fc4db2171eff45johnlev (zcp)->zc_word[3] = w3; \
843e19887f64dde75055cf8842fc4db2171eff45johnlev}
843e19887f64dde75055cf8842fc4db2171eff45johnlev
843e19887f64dde75055cf8842fc4db2171eff45johnlev#define BP_IDENTITY(bp) (&(bp)->blk_dva[0])
843e19887f64dde75055cf8842fc4db2171eff45johnlev#define BP_IS_GANG(bp) DVA_GET_GANG(BP_IDENTITY(bp))
843e19887f64dde75055cf8842fc4db2171eff45johnlev#define BP_IS_HOLE(bp) ((bp)->blk_birth == 0)
843e19887f64dde75055cf8842fc4db2171eff45johnlev
843e19887f64dde75055cf8842fc4db2171eff45johnlev#define BP_ZERO(bp) \
843e19887f64dde75055cf8842fc4db2171eff45johnlev{ \
843e19887f64dde75055cf8842fc4db2171eff45johnlev (bp)->blk_dva[0].dva_word[0] = 0; \
843e19887f64dde75055cf8842fc4db2171eff45johnlev (bp)->blk_dva[0].dva_word[1] = 0; \
843e19887f64dde75055cf8842fc4db2171eff45johnlev (bp)->blk_dva[1].dva_word[0] = 0; \
843e19887f64dde75055cf8842fc4db2171eff45johnlev (bp)->blk_dva[1].dva_word[1] = 0; \
843e19887f64dde75055cf8842fc4db2171eff45johnlev (bp)->blk_dva[2].dva_word[0] = 0; \
843e19887f64dde75055cf8842fc4db2171eff45johnlev (bp)->blk_dva[2].dva_word[1] = 0; \
843e19887f64dde75055cf8842fc4db2171eff45johnlev (bp)->blk_prop = 0; \
843e19887f64dde75055cf8842fc4db2171eff45johnlev (bp)->blk_pad[0] = 0; \
843e19887f64dde75055cf8842fc4db2171eff45johnlev (bp)->blk_pad[1] = 0; \
843e19887f64dde75055cf8842fc4db2171eff45johnlev (bp)->blk_phys_birth = 0; \
843e19887f64dde75055cf8842fc4db2171eff45johnlev (bp)->blk_birth = 0; \
843e19887f64dde75055cf8842fc4db2171eff45johnlev (bp)->blk_fill = 0; \
843e19887f64dde75055cf8842fc4db2171eff45johnlev ZIO_SET_CHECKSUM(&(bp)->blk_cksum, 0, 0, 0, 0); \
843e19887f64dde75055cf8842fc4db2171eff45johnlev}
843e19887f64dde75055cf8842fc4db2171eff45johnlev
843e19887f64dde75055cf8842fc4db2171eff45johnlev/*
843e19887f64dde75055cf8842fc4db2171eff45johnlev * Note: the byteorder is either 0 or -1, both of which are palindromes.
843e19887f64dde75055cf8842fc4db2171eff45johnlev * This simplifies the endianness handling a bit.
843e19887f64dde75055cf8842fc4db2171eff45johnlev */
843e19887f64dde75055cf8842fc4db2171eff45johnlev#ifdef _BIG_ENDIAN
843e19887f64dde75055cf8842fc4db2171eff45johnlev#define ZFS_HOST_BYTEORDER (0ULL)
843e19887f64dde75055cf8842fc4db2171eff45johnlev#else
843e19887f64dde75055cf8842fc4db2171eff45johnlev#define ZFS_HOST_BYTEORDER (-1ULL)
843e19887f64dde75055cf8842fc4db2171eff45johnlev#endif
843e19887f64dde75055cf8842fc4db2171eff45johnlev
843e19887f64dde75055cf8842fc4db2171eff45johnlev#define BP_SHOULD_BYTESWAP(bp) (BP_GET_BYTEORDER(bp) != ZFS_HOST_BYTEORDER)
843e19887f64dde75055cf8842fc4db2171eff45johnlev
843e19887f64dde75055cf8842fc4db2171eff45johnlev#define BP_SPRINTF_LEN 320
843e19887f64dde75055cf8842fc4db2171eff45johnlev
843e19887f64dde75055cf8842fc4db2171eff45johnlev/*
843e19887f64dde75055cf8842fc4db2171eff45johnlev * This macro allows code sharing between zfs, libzpool, and mdb.
843e19887f64dde75055cf8842fc4db2171eff45johnlev * 'func' is either snprintf() or mdb_snprintf().
843e19887f64dde75055cf8842fc4db2171eff45johnlev * 'ws' (whitespace) can be ' ' for single-line format, '\n' for multi-line.
843e19887f64dde75055cf8842fc4db2171eff45johnlev */
843e19887f64dde75055cf8842fc4db2171eff45johnlev#define SPRINTF_BLKPTR(func, ws, buf, bp, type, checksum, compress) \
843e19887f64dde75055cf8842fc4db2171eff45johnlev{ \
843e19887f64dde75055cf8842fc4db2171eff45johnlev static const char *copyname[] = \
843e19887f64dde75055cf8842fc4db2171eff45johnlev { "zero", "single", "double", "triple" }; \
843e19887f64dde75055cf8842fc4db2171eff45johnlev int size = BP_SPRINTF_LEN; \
843e19887f64dde75055cf8842fc4db2171eff45johnlev int len = 0; \
843e19887f64dde75055cf8842fc4db2171eff45johnlev int copies = 0; \
843e19887f64dde75055cf8842fc4db2171eff45johnlev \
843e19887f64dde75055cf8842fc4db2171eff45johnlev if (bp == NULL) { \
843e19887f64dde75055cf8842fc4db2171eff45johnlev len = func(buf + len, size - len, "<NULL>"); \
843e19887f64dde75055cf8842fc4db2171eff45johnlev } else if (BP_IS_HOLE(bp)) { \
843e19887f64dde75055cf8842fc4db2171eff45johnlev len = func(buf + len, size - len, "<hole>"); \
843e19887f64dde75055cf8842fc4db2171eff45johnlev } else { \
843e19887f64dde75055cf8842fc4db2171eff45johnlev for (int d = 0; d < BP_GET_NDVAS(bp); d++) { \
843e19887f64dde75055cf8842fc4db2171eff45johnlev const dva_t *dva = &bp->blk_dva[d]; \
843e19887f64dde75055cf8842fc4db2171eff45johnlev if (DVA_IS_VALID(dva)) \
843e19887f64dde75055cf8842fc4db2171eff45johnlev copies++; \
843e19887f64dde75055cf8842fc4db2171eff45johnlev len += func(buf + len, size - len, \
843e19887f64dde75055cf8842fc4db2171eff45johnlev "DVA[%d]=<%llu:%llx:%llx>%c", d, \
843e19887f64dde75055cf8842fc4db2171eff45johnlev (u_longlong_t)DVA_GET_VDEV(dva), \
843e19887f64dde75055cf8842fc4db2171eff45johnlev (u_longlong_t)DVA_GET_OFFSET(dva), \
843e19887f64dde75055cf8842fc4db2171eff45johnlev (u_longlong_t)DVA_GET_ASIZE(dva), \
843e19887f64dde75055cf8842fc4db2171eff45johnlev ws); \
843e19887f64dde75055cf8842fc4db2171eff45johnlev } \
843e19887f64dde75055cf8842fc4db2171eff45johnlev if (BP_IS_GANG(bp) && \
843e19887f64dde75055cf8842fc4db2171eff45johnlev DVA_GET_ASIZE(&bp->blk_dva[2]) <= \
843e19887f64dde75055cf8842fc4db2171eff45johnlev DVA_GET_ASIZE(&bp->blk_dva[1]) / 2) \
843e19887f64dde75055cf8842fc4db2171eff45johnlev copies--; \
843e19887f64dde75055cf8842fc4db2171eff45johnlev len += func(buf + len, size - len, \
843e19887f64dde75055cf8842fc4db2171eff45johnlev "[L%llu %s] %s %s %s %s %s %s%c" \
843e19887f64dde75055cf8842fc4db2171eff45johnlev "size=%llxL/%llxP birth=%lluL/%lluP fill=%llu%c" \
843e19887f64dde75055cf8842fc4db2171eff45johnlev "cksum=%llx:%llx:%llx:%llx", \
843e19887f64dde75055cf8842fc4db2171eff45johnlev (u_longlong_t)BP_GET_LEVEL(bp), \
843e19887f64dde75055cf8842fc4db2171eff45johnlev type, \
843e19887f64dde75055cf8842fc4db2171eff45johnlev checksum, \
843e19887f64dde75055cf8842fc4db2171eff45johnlev compress, \
843e19887f64dde75055cf8842fc4db2171eff45johnlev BP_GET_BYTEORDER(bp) == 0 ? "BE" : "LE", \
843e19887f64dde75055cf8842fc4db2171eff45johnlev BP_IS_GANG(bp) ? "gang" : "contiguous", \
843e19887f64dde75055cf8842fc4db2171eff45johnlev BP_GET_DEDUP(bp) ? "dedup" : "unique", \
843e19887f64dde75055cf8842fc4db2171eff45johnlev copyname[copies], \
843e19887f64dde75055cf8842fc4db2171eff45johnlev ws, \
843e19887f64dde75055cf8842fc4db2171eff45johnlev (u_longlong_t)BP_GET_LSIZE(bp), \
843e19887f64dde75055cf8842fc4db2171eff45johnlev (u_longlong_t)BP_GET_PSIZE(bp), \
843e19887f64dde75055cf8842fc4db2171eff45johnlev (u_longlong_t)bp->blk_birth, \
843e19887f64dde75055cf8842fc4db2171eff45johnlev (u_longlong_t)BP_PHYSICAL_BIRTH(bp), \
843e19887f64dde75055cf8842fc4db2171eff45johnlev (u_longlong_t)bp->blk_fill, \
843e19887f64dde75055cf8842fc4db2171eff45johnlev ws, \
843e19887f64dde75055cf8842fc4db2171eff45johnlev (u_longlong_t)bp->blk_cksum.zc_word[0], \
843e19887f64dde75055cf8842fc4db2171eff45johnlev (u_longlong_t)bp->blk_cksum.zc_word[1], \
843e19887f64dde75055cf8842fc4db2171eff45johnlev (u_longlong_t)bp->blk_cksum.zc_word[2], \
843e19887f64dde75055cf8842fc4db2171eff45johnlev (u_longlong_t)bp->blk_cksum.zc_word[3]); \
843e19887f64dde75055cf8842fc4db2171eff45johnlev } \
843e19887f64dde75055cf8842fc4db2171eff45johnlev ASSERT(len < size); \
843e19887f64dde75055cf8842fc4db2171eff45johnlev}
843e19887f64dde75055cf8842fc4db2171eff45johnlev
843e19887f64dde75055cf8842fc4db2171eff45johnlev#include <sys/dmu.h>
843e19887f64dde75055cf8842fc4db2171eff45johnlev
843e19887f64dde75055cf8842fc4db2171eff45johnlev#define BP_GET_BUFC_TYPE(bp) \
843e19887f64dde75055cf8842fc4db2171eff45johnlev (((BP_GET_LEVEL(bp) > 0) || (dmu_ot[BP_GET_TYPE(bp)].ot_metadata)) ? \
843e19887f64dde75055cf8842fc4db2171eff45johnlev ARC_BUFC_METADATA : ARC_BUFC_DATA);
843e19887f64dde75055cf8842fc4db2171eff45johnlev
843e19887f64dde75055cf8842fc4db2171eff45johnlevtypedef enum spa_import_type {
843e19887f64dde75055cf8842fc4db2171eff45johnlev SPA_IMPORT_EXISTING,
843e19887f64dde75055cf8842fc4db2171eff45johnlev SPA_IMPORT_ASSEMBLE
843e19887f64dde75055cf8842fc4db2171eff45johnlev} spa_import_type_t;
843e19887f64dde75055cf8842fc4db2171eff45johnlev
843e19887f64dde75055cf8842fc4db2171eff45johnlev/* state manipulation functions */
843e19887f64dde75055cf8842fc4db2171eff45johnlevextern int spa_open(const char *pool, spa_t **, void *tag);
843e19887f64dde75055cf8842fc4db2171eff45johnlevextern int spa_open_rewind(const char *pool, spa_t **, void *tag,
843e19887f64dde75055cf8842fc4db2171eff45johnlev nvlist_t *policy, nvlist_t **config);
843e19887f64dde75055cf8842fc4db2171eff45johnlevextern int spa_get_stats(const char *pool, nvlist_t **config,
843e19887f64dde75055cf8842fc4db2171eff45johnlev char *altroot, size_t buflen);
843e19887f64dde75055cf8842fc4db2171eff45johnlevextern int spa_create(const char *pool, nvlist_t *config, nvlist_t *props,
843e19887f64dde75055cf8842fc4db2171eff45johnlev const char *history_str, nvlist_t *zplprops);
843e19887f64dde75055cf8842fc4db2171eff45johnlevextern int spa_import_rootpool(char *devpath, char *devid);
843e19887f64dde75055cf8842fc4db2171eff45johnlevextern int spa_import(const char *pool, nvlist_t *config, nvlist_t *props);
843e19887f64dde75055cf8842fc4db2171eff45johnlevextern int spa_import_verbatim(const char *, nvlist_t *, nvlist_t *);
843e19887f64dde75055cf8842fc4db2171eff45johnlevextern nvlist_t *spa_tryimport(nvlist_t *tryconfig);
843e19887f64dde75055cf8842fc4db2171eff45johnlevextern int spa_destroy(char *pool);
843e19887f64dde75055cf8842fc4db2171eff45johnlevextern int spa_export(char *pool, nvlist_t **oldconfig, boolean_t force,
843e19887f64dde75055cf8842fc4db2171eff45johnlev boolean_t hardforce);
843e19887f64dde75055cf8842fc4db2171eff45johnlevextern int spa_reset(char *pool);
843e19887f64dde75055cf8842fc4db2171eff45johnlevextern void spa_async_request(spa_t *spa, int flag);
843e19887f64dde75055cf8842fc4db2171eff45johnlevextern void spa_async_unrequest(spa_t *spa, int flag);
843e19887f64dde75055cf8842fc4db2171eff45johnlevextern void spa_async_suspend(spa_t *spa);
843e19887f64dde75055cf8842fc4db2171eff45johnlevextern void spa_async_resume(spa_t *spa);
843e19887f64dde75055cf8842fc4db2171eff45johnlevextern spa_t *spa_inject_addref(char *pool);
843e19887f64dde75055cf8842fc4db2171eff45johnlevextern void spa_inject_delref(spa_t *spa);
843e19887f64dde75055cf8842fc4db2171eff45johnlev
843e19887f64dde75055cf8842fc4db2171eff45johnlev#define SPA_ASYNC_CONFIG_UPDATE 0x01
843e19887f64dde75055cf8842fc4db2171eff45johnlev#define SPA_ASYNC_REMOVE 0x02
843e19887f64dde75055cf8842fc4db2171eff45johnlev#define SPA_ASYNC_PROBE 0x04
843e19887f64dde75055cf8842fc4db2171eff45johnlev#define SPA_ASYNC_RESILVER_DONE 0x08
843e19887f64dde75055cf8842fc4db2171eff45johnlev#define SPA_ASYNC_RESILVER 0x10
843e19887f64dde75055cf8842fc4db2171eff45johnlev#define SPA_ASYNC_AUTOEXPAND 0x20
843e19887f64dde75055cf8842fc4db2171eff45johnlev
843e19887f64dde75055cf8842fc4db2171eff45johnlev/* device manipulation */
843e19887f64dde75055cf8842fc4db2171eff45johnlevextern int spa_vdev_add(spa_t *spa, nvlist_t *nvroot);
843e19887f64dde75055cf8842fc4db2171eff45johnlevextern int spa_vdev_attach(spa_t *spa, uint64_t guid, nvlist_t *nvroot,
843e19887f64dde75055cf8842fc4db2171eff45johnlev int replacing);
843e19887f64dde75055cf8842fc4db2171eff45johnlevextern int spa_vdev_detach(spa_t *spa, uint64_t guid, uint64_t pguid,
843e19887f64dde75055cf8842fc4db2171eff45johnlev int replace_done);
843e19887f64dde75055cf8842fc4db2171eff45johnlevextern int spa_vdev_remove(spa_t *spa, uint64_t guid, boolean_t unspare);
843e19887f64dde75055cf8842fc4db2171eff45johnlevextern int spa_vdev_setpath(spa_t *spa, uint64_t guid, const char *newpath);
843e19887f64dde75055cf8842fc4db2171eff45johnlevextern int spa_vdev_setfru(spa_t *spa, uint64_t guid, const char *newfru);
843e19887f64dde75055cf8842fc4db2171eff45johnlevextern int spa_vdev_split_mirror(spa_t *spa, char *newname, nvlist_t *config,
843e19887f64dde75055cf8842fc4db2171eff45johnlev nvlist_t *props, boolean_t exp);
843e19887f64dde75055cf8842fc4db2171eff45johnlev
843e19887f64dde75055cf8842fc4db2171eff45johnlev/* spare state (which is global across all pools) */
843e19887f64dde75055cf8842fc4db2171eff45johnlevextern void spa_spare_add(vdev_t *vd);
843e19887f64dde75055cf8842fc4db2171eff45johnlevextern void spa_spare_remove(vdev_t *vd);
843e19887f64dde75055cf8842fc4db2171eff45johnlevextern boolean_t spa_spare_exists(uint64_t guid, uint64_t *pool, int *refcnt);
843e19887f64dde75055cf8842fc4db2171eff45johnlevextern void spa_spare_activate(vdev_t *vd);
843e19887f64dde75055cf8842fc4db2171eff45johnlev
843e19887f64dde75055cf8842fc4db2171eff45johnlev/* L2ARC state (which is global across all pools) */
843e19887f64dde75055cf8842fc4db2171eff45johnlevextern void spa_l2cache_add(vdev_t *vd);
843e19887f64dde75055cf8842fc4db2171eff45johnlevextern void spa_l2cache_remove(vdev_t *vd);
843e19887f64dde75055cf8842fc4db2171eff45johnlevextern boolean_t spa_l2cache_exists(uint64_t guid, uint64_t *pool);
843e19887f64dde75055cf8842fc4db2171eff45johnlevextern void spa_l2cache_activate(vdev_t *vd);
843e19887f64dde75055cf8842fc4db2171eff45johnlevextern void spa_l2cache_drop(spa_t *spa);
843e19887f64dde75055cf8842fc4db2171eff45johnlev
843e19887f64dde75055cf8842fc4db2171eff45johnlev/* scrubbing */
843e19887f64dde75055cf8842fc4db2171eff45johnlevextern int spa_scrub(spa_t *spa, pool_scrub_type_t type);
843e19887f64dde75055cf8842fc4db2171eff45johnlev
843e19887f64dde75055cf8842fc4db2171eff45johnlev/* spa syncing */
843e19887f64dde75055cf8842fc4db2171eff45johnlevextern void spa_sync(spa_t *spa, uint64_t txg); /* only for DMU use */
843e19887f64dde75055cf8842fc4db2171eff45johnlevextern void spa_sync_allpools(void);
843e19887f64dde75055cf8842fc4db2171eff45johnlev
843e19887f64dde75055cf8842fc4db2171eff45johnlev#define SYNC_PASS_DEFERRED_FREE 1 /* defer frees after this pass */
843e19887f64dde75055cf8842fc4db2171eff45johnlev#define SYNC_PASS_DONT_COMPRESS 4 /* don't compress after this pass */
843e19887f64dde75055cf8842fc4db2171eff45johnlev#define SYNC_PASS_REWRITE 1 /* rewrite new bps after this pass */
843e19887f64dde75055cf8842fc4db2171eff45johnlev
843e19887f64dde75055cf8842fc4db2171eff45johnlev/* spa namespace global mutex */
843e19887f64dde75055cf8842fc4db2171eff45johnlevextern kmutex_t spa_namespace_lock;
843e19887f64dde75055cf8842fc4db2171eff45johnlev
843e19887f64dde75055cf8842fc4db2171eff45johnlev/*
843e19887f64dde75055cf8842fc4db2171eff45johnlev * SPA configuration functions in spa_config.c
843e19887f64dde75055cf8842fc4db2171eff45johnlev */
843e19887f64dde75055cf8842fc4db2171eff45johnlev
843e19887f64dde75055cf8842fc4db2171eff45johnlev#define SPA_CONFIG_UPDATE_POOL 0
843e19887f64dde75055cf8842fc4db2171eff45johnlev#define SPA_CONFIG_UPDATE_VDEVS 1
843e19887f64dde75055cf8842fc4db2171eff45johnlev
843e19887f64dde75055cf8842fc4db2171eff45johnlevextern void spa_config_sync(spa_t *, boolean_t, boolean_t);
843e19887f64dde75055cf8842fc4db2171eff45johnlevextern void spa_config_load(void);
843e19887f64dde75055cf8842fc4db2171eff45johnlevextern nvlist_t *spa_all_configs(uint64_t *);
843e19887f64dde75055cf8842fc4db2171eff45johnlevextern void spa_config_set(spa_t *spa, nvlist_t *config);
843e19887f64dde75055cf8842fc4db2171eff45johnlevextern nvlist_t *spa_config_generate(spa_t *spa, vdev_t *vd, uint64_t txg,
843e19887f64dde75055cf8842fc4db2171eff45johnlev int getstats);
843e19887f64dde75055cf8842fc4db2171eff45johnlevextern void spa_config_update(spa_t *spa, int what);
843e19887f64dde75055cf8842fc4db2171eff45johnlev
843e19887f64dde75055cf8842fc4db2171eff45johnlev/*
843e19887f64dde75055cf8842fc4db2171eff45johnlev * Miscellaneous SPA routines in spa_misc.c
843e19887f64dde75055cf8842fc4db2171eff45johnlev */
843e19887f64dde75055cf8842fc4db2171eff45johnlev
843e19887f64dde75055cf8842fc4db2171eff45johnlev/* Namespace manipulation */
843e19887f64dde75055cf8842fc4db2171eff45johnlevextern spa_t *spa_lookup(const char *name);
843e19887f64dde75055cf8842fc4db2171eff45johnlevextern spa_t *spa_add(const char *name, nvlist_t *config, const char *altroot);
843e19887f64dde75055cf8842fc4db2171eff45johnlevextern void spa_remove(spa_t *spa);
843e19887f64dde75055cf8842fc4db2171eff45johnlevextern spa_t *spa_next(spa_t *prev);
843e19887f64dde75055cf8842fc4db2171eff45johnlev
843e19887f64dde75055cf8842fc4db2171eff45johnlev/* Refcount functions */
843e19887f64dde75055cf8842fc4db2171eff45johnlevextern void spa_open_ref(spa_t *spa, void *tag);
843e19887f64dde75055cf8842fc4db2171eff45johnlevextern void spa_close(spa_t *spa, void *tag);
843e19887f64dde75055cf8842fc4db2171eff45johnlevextern boolean_t spa_refcount_zero(spa_t *spa);
843e19887f64dde75055cf8842fc4db2171eff45johnlev
843e19887f64dde75055cf8842fc4db2171eff45johnlev#define SCL_NONE 0x00
843e19887f64dde75055cf8842fc4db2171eff45johnlev#define SCL_CONFIG 0x01
843e19887f64dde75055cf8842fc4db2171eff45johnlev#define SCL_STATE 0x02
843e19887f64dde75055cf8842fc4db2171eff45johnlev#define SCL_L2ARC 0x04 /* hack until L2ARC 2.0 */
843e19887f64dde75055cf8842fc4db2171eff45johnlev#define SCL_ALLOC 0x08
843e19887f64dde75055cf8842fc4db2171eff45johnlev#define SCL_ZIO 0x10
843e19887f64dde75055cf8842fc4db2171eff45johnlev#define SCL_FREE 0x20
843e19887f64dde75055cf8842fc4db2171eff45johnlev#define SCL_VDEV 0x40
843e19887f64dde75055cf8842fc4db2171eff45johnlev#define SCL_LOCKS 7
843e19887f64dde75055cf8842fc4db2171eff45johnlev#define SCL_ALL ((1 << SCL_LOCKS) - 1)
843e19887f64dde75055cf8842fc4db2171eff45johnlev#define SCL_STATE_ALL (SCL_STATE | SCL_L2ARC | SCL_ZIO)
843e19887f64dde75055cf8842fc4db2171eff45johnlev
843e19887f64dde75055cf8842fc4db2171eff45johnlev/* Pool configuration locks */
843e19887f64dde75055cf8842fc4db2171eff45johnlevextern int spa_config_tryenter(spa_t *spa, int locks, void *tag, krw_t rw);
843e19887f64dde75055cf8842fc4db2171eff45johnlevextern void spa_config_enter(spa_t *spa, int locks, void *tag, krw_t rw);
843e19887f64dde75055cf8842fc4db2171eff45johnlevextern void spa_config_exit(spa_t *spa, int locks, void *tag);
843e19887f64dde75055cf8842fc4db2171eff45johnlevextern int spa_config_held(spa_t *spa, int locks, krw_t rw);
843e19887f64dde75055cf8842fc4db2171eff45johnlev
843e19887f64dde75055cf8842fc4db2171eff45johnlev/* Pool vdev add/remove lock */
843e19887f64dde75055cf8842fc4db2171eff45johnlevextern uint64_t spa_vdev_enter(spa_t *spa);
843e19887f64dde75055cf8842fc4db2171eff45johnlevextern uint64_t spa_vdev_config_enter(spa_t *spa);
843e19887f64dde75055cf8842fc4db2171eff45johnlevextern void spa_vdev_config_exit(spa_t *spa, vdev_t *vd, uint64_t txg,
843e19887f64dde75055cf8842fc4db2171eff45johnlev int error, char *tag);
843e19887f64dde75055cf8842fc4db2171eff45johnlevextern int spa_vdev_exit(spa_t *spa, vdev_t *vd, uint64_t txg, int error);
843e19887f64dde75055cf8842fc4db2171eff45johnlev
843e19887f64dde75055cf8842fc4db2171eff45johnlev/* Pool vdev state change lock */
843e19887f64dde75055cf8842fc4db2171eff45johnlevextern void spa_vdev_state_enter(spa_t *spa, int oplock);
843e19887f64dde75055cf8842fc4db2171eff45johnlevextern int spa_vdev_state_exit(spa_t *spa, vdev_t *vd, int error);
843e19887f64dde75055cf8842fc4db2171eff45johnlev
843e19887f64dde75055cf8842fc4db2171eff45johnlev/* Log state */
843e19887f64dde75055cf8842fc4db2171eff45johnlevtypedef enum spa_log_state {
843e19887f64dde75055cf8842fc4db2171eff45johnlev SPA_LOG_UNKNOWN = 0, /* unknown log state */
843e19887f64dde75055cf8842fc4db2171eff45johnlev SPA_LOG_MISSING, /* missing log(s) */
843e19887f64dde75055cf8842fc4db2171eff45johnlev SPA_LOG_CLEAR, /* clear the log(s) */
843e19887f64dde75055cf8842fc4db2171eff45johnlev SPA_LOG_GOOD, /* log(s) are good */
843e19887f64dde75055cf8842fc4db2171eff45johnlev} spa_log_state_t;
843e19887f64dde75055cf8842fc4db2171eff45johnlev
843e19887f64dde75055cf8842fc4db2171eff45johnlevextern spa_log_state_t spa_get_log_state(spa_t *spa);
843e19887f64dde75055cf8842fc4db2171eff45johnlevextern void spa_set_log_state(spa_t *spa, spa_log_state_t state);
843e19887f64dde75055cf8842fc4db2171eff45johnlevextern int spa_offline_log(spa_t *spa);
843e19887f64dde75055cf8842fc4db2171eff45johnlev
843e19887f64dde75055cf8842fc4db2171eff45johnlev/* Log claim callback */
843e19887f64dde75055cf8842fc4db2171eff45johnlevextern void spa_claim_notify(zio_t *zio);
843e19887f64dde75055cf8842fc4db2171eff45johnlev
843e19887f64dde75055cf8842fc4db2171eff45johnlev/* Accessor functions */
843e19887f64dde75055cf8842fc4db2171eff45johnlevextern boolean_t spa_shutting_down(spa_t *spa);
843e19887f64dde75055cf8842fc4db2171eff45johnlevextern struct dsl_pool *spa_get_dsl(spa_t *spa);
843e19887f64dde75055cf8842fc4db2171eff45johnlevextern blkptr_t *spa_get_rootblkptr(spa_t *spa);
843e19887f64dde75055cf8842fc4db2171eff45johnlevextern void spa_set_rootblkptr(spa_t *spa, const blkptr_t *bp);
843e19887f64dde75055cf8842fc4db2171eff45johnlevextern void spa_altroot(spa_t *, char *, size_t);
843e19887f64dde75055cf8842fc4db2171eff45johnlevextern int spa_sync_pass(spa_t *spa);
843e19887f64dde75055cf8842fc4db2171eff45johnlevextern char *spa_name(spa_t *spa);
843e19887f64dde75055cf8842fc4db2171eff45johnlevextern uint64_t spa_guid(spa_t *spa);
843e19887f64dde75055cf8842fc4db2171eff45johnlevextern uint64_t spa_last_synced_txg(spa_t *spa);
843e19887f64dde75055cf8842fc4db2171eff45johnlevextern uint64_t spa_first_txg(spa_t *spa);
843e19887f64dde75055cf8842fc4db2171eff45johnlevextern uint64_t spa_syncing_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_asize(spa_t *spa, uint64_t lsize);
extern uint64_t spa_get_dspace(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 int spa_max_replication(spa_t *spa);
extern int spa_busy(void);
extern uint8_t spa_get_failmode(spa_t *spa);
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 enum zio_checksum spa_dedup_checksum(spa_t *spa);
/* Miscellaneous support routines */
extern int spa_rename(const char *oldname, const char *newname);
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 sprintf_blkptr(char *buf, const blkptr_t *bp);
extern void spa_freeze(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 void spa_rewind_data_to_nvlist(spa_t *spa, nvlist_t *to);
extern int spa_mode(spa_t *spa);
extern uint64_t strtonum(const char *str, char **nptr);
/* history logging */
typedef enum history_log_type {
LOG_CMD_POOL_CREATE,
LOG_CMD_NORMAL,
LOG_INTERNAL
} history_log_type_t;
typedef struct history_arg {
const char *ha_history_str;
history_log_type_t ha_log_type;
history_internal_events_t ha_event;
char ha_zone[MAXPATHLEN];
} history_arg_t;
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,
history_log_type_t what);
extern void spa_history_internal_log(history_internal_events_t event,
spa_t *spa, dmu_tx_t *tx, cred_t *cr, const char *fmt, ...);
extern void spa_history_log_version(spa_t *spa, history_internal_events_t evt);
/* error handling */
struct zbookmark;
extern void spa_log_error(spa_t *spa, zio_t *zio);
extern void zfs_ereport_post(const char *class, spa_t *spa, vdev_t *vd,
zio_t *zio, uint64_t stateoroffset, uint64_t length);
extern void zfs_post_remove(spa_t *spa, vdev_t *vd);
extern void zfs_post_state_change(spa_t *spa, vdev_t *vd);
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);
/* Initialization and termination */
extern void spa_init(int flags);
extern void spa_fini(void);
extern void spa_boot_init();
/* 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, 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); \
sprintf_blkptr(__blkbuf, (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 */
#ifdef __cplusplus
}
#endif
#endif /* _SYS_SPA_H */