spa.h revision c3d26abc9ee97b4f60233556aadeb57e0bd30bb9
86c48bbfeb72d5a6ee171e713059939bab658b77Reza Sabdar * CDDL HEADER START
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar * The contents of this file are subject to the terms of the
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar * Common Development and Distribution License (the "License").
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar * You may not use this file except in compliance with the License.
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar * See the License for the specific language governing permissions
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar * and limitations under the License.
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar * When distributing Covered Code, include this CDDL HEADER in each
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar * If applicable, add the following below this CDDL HEADER, with the
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar * fields enclosed by brackets "[]" replaced with your own identifying
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar * information: Portions Copyright [yyyy] [name of copyright owner]
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar * CDDL HEADER END
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar * Copyright (c) 2011, 2014 by Delphix. All rights reserved.
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar * Copyright 2011 Nexenta Systems, Inc. All rights reserved.
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar * Copyright (c) 2014 Spectra Logic Corporation, All rights reserved.
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar * Copyright 2013 Saso Kiselkov. All rights reserved.
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar * Copyright (c) 2014 Integros [integros.com]
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar * Forward references that lots of things need.
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar * General-purpose 32-bit and 64-bit bitfield encodings.
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar#define BF32_DECODE(x, low, len) P2PHASE((x) >> (low), 1U << (len))
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar#define BF64_DECODE(x, low, len) P2PHASE((x) >> (low), 1ULL << (len))
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar#define BF32_ENCODE(x, low, len) (P2PHASE((x), 1U << (len)) << (low))
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar#define BF64_ENCODE(x, low, len) (P2PHASE((x), 1ULL << (len)) << (low))
9ee94b97c8654689d6a034daec08757fda75d21aJan Kryl#define BF32_GET(x, low, len) BF32_DECODE(x, low, len)
9ee94b97c8654689d6a034daec08757fda75d21aJan Kryl#define BF64_GET(x, low, len) BF64_DECODE(x, low, len)
9ee94b97c8654689d6a034daec08757fda75d21aJan Kryl (x) ^= BF32_ENCODE((x >> low) ^ (val), low, len); \
9ee94b97c8654689d6a034daec08757fda75d21aJan Kryl ((x) ^= BF64_ENCODE((x >> low) ^ (val), low, len)); \
9ee94b97c8654689d6a034daec08757fda75d21aJan Kryl#define BF32_SET_SB(x, low, len, shift, bias, val) do { \
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar BF32_SET(x, low, len, ((val) >> (shift)) - (bias)); \
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar#define BF64_SET_SB(x, low, len, shift, bias, val) do { \
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar BF64_SET(x, low, len, ((val) >> (shift)) - (bias)); \
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar * We currently support block sizes from 512 bytes to 16MB.
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar * The benefits of larger blocks, and thus larger IO, need to be weighed
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar * against the cost of COWing a giant block to modify one byte, and the
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar * large latency of reading or writing a large block.
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar * Note that although blocks up to 16MB are supported, the recordsize
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar * property can not be set larger than zfs_max_recordsize (default 1MB).
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar * See the comment near zfs_max_recordsize in dsl_dataset.c for details.
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar * Note that although the LSIZE field of the blkptr_t can store sizes up
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar * to 32MB, the dnode's dn_datablkszsec can only store sizes up to
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar * 32MB - 512 bytes. Therefore, we limit SPA_MAXBLOCKSIZE to 16MB.
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar#define SPA_MINBLOCKSIZE (1ULL << SPA_MINBLOCKSHIFT)
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar#define SPA_OLD_MAXBLOCKSIZE (1ULL << SPA_OLD_MAXBLOCKSHIFT)
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar#define SPA_MAXBLOCKSIZE (1ULL << SPA_MAXBLOCKSHIFT)
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar * Size of block to hold the configuration data (a packed nvlist)
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar * The DVA size encodings for LSIZE and PSIZE support blocks up to 32MB.
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar * The ASIZE encoding should be at least 64 times larger (6 more bits)
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar * to support up to 4-way RAID-Z mirror mode with worst-case gang block
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar * overhead, three DVAs per bp, plus one more bit in case we do anything
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar * else that expands the ASIZE.
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar#define SPA_LSIZEBITS 16 /* LSIZE up to 32M (2^16 * 512) */
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar#define SPA_PSIZEBITS 16 /* PSIZE up to 32M (2^16 * 512) */
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar#define SPA_ASIZEBITS 24 /* ASIZE up to 64 times larger */
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar * All SPA data is represented by 128-bit data virtual addresses (DVAs).
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar * The members of the dva_t should be considered opaque outside the SPA.
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdartypedef struct dva {
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar * Each block has a 256-bit checksum -- strong enough for cryptographic hashes.
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdartypedef struct zio_cksum {
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar * Some checksums/hashes need a 256-bit initialization salt. This salt is kept
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar * secret and is suitable for use in MAC algorithms as the key.
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdartypedef struct zio_cksum_salt {
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar * Each block is described by its DVAs, time of birth, checksum, etc.
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar * The word-by-word, bit-by-bit layout of the blkptr is as follows:
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar * 64 56 48 40 32 24 16 8 0
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar * +-------+-------+-------+-------+-------+-------+-------+-------+
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar * 0 | vdev1 | GRID | ASIZE |
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar * +-------+-------+-------+-------+-------+-------+-------+-------+
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar * 1 |G| offset1 |
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar * +-------+-------+-------+-------+-------+-------+-------+-------+
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar * 2 | vdev2 | GRID | ASIZE |
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar * +-------+-------+-------+-------+-------+-------+-------+-------+
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar * 3 |G| offset2 |
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar * +-------+-------+-------+-------+-------+-------+-------+-------+
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar * 4 | vdev3 | GRID | ASIZE |
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar * +-------+-------+-------+-------+-------+-------+-------+-------+
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar * 5 |G| offset3 |
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar * +-------+-------+-------+-------+-------+-------+-------+-------+
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar * 6 |BDX|lvl| type | cksum |E| comp| PSIZE | LSIZE |
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar * +-------+-------+-------+-------+-------+-------+-------+-------+
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar * 7 | padding |
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar * +-------+-------+-------+-------+-------+-------+-------+-------+
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar * 8 | padding |
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar * +-------+-------+-------+-------+-------+-------+-------+-------+
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar * 9 | physical birth txg |
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar * +-------+-------+-------+-------+-------+-------+-------+-------+
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar * a | logical birth txg |
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar * +-------+-------+-------+-------+-------+-------+-------+-------+
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar * b | fill count |
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar * +-------+-------+-------+-------+-------+-------+-------+-------+
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar * c | checksum[0] |
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar * +-------+-------+-------+-------+-------+-------+-------+-------+
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar * d | checksum[1] |
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar * +-------+-------+-------+-------+-------+-------+-------+-------+
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar * e | checksum[2] |
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar * +-------+-------+-------+-------+-------+-------+-------+-------+
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar * f | checksum[3] |
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar * +-------+-------+-------+-------+-------+-------+-------+-------+
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar * vdev virtual device ID
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar * offset offset into virtual device
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar * LSIZE logical size
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar * PSIZE physical size (after compression)
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar * ASIZE allocated size (including RAID-Z parity and gang block headers)
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar * GRID RAID-Z layout information (reserved for future use)
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar * cksum checksum function
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar * comp compression function
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar * G gang block indicator
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar * B byteorder (endianness)
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar * X encryption (on version 30, which is not supported)
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar * E blkptr_t contains embedded data (see below)
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar * lvl level of indirection
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar * type DMU object type
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar * phys birth txg of block allocation; zero if same as logical birth txg
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar * log. birth transaction group in which the block was logically born
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar * fill count number of non-zero blocks under this bp
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar * checksum[4] 256-bit checksum of the data this bp describes
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar * "Embedded" blkptr_t's don't actually point to a block, instead they
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar * have a data payload embedded in the blkptr_t itself. See the comment
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar * in blkptr.c for more details.
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar * The blkptr_t is laid out as follows:
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar * 64 56 48 40 32 24 16 8 0
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar * +-------+-------+-------+-------+-------+-------+-------+-------+
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar * 0 | payload |
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar * 1 | payload |
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar * 2 | payload |
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar * 3 | payload |
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar * 4 | payload |
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar * 5 | payload |
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar * +-------+-------+-------+-------+-------+-------+-------+-------+
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar * 6 |BDX|lvl| type | etype |E| comp| PSIZE| LSIZE |
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar * +-------+-------+-------+-------+-------+-------+-------+-------+
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar * 7 | payload |
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar * 8 | payload |
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar * 9 | payload |
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar * +-------+-------+-------+-------+-------+-------+-------+-------+
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar * a | logical birth txg |
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar * +-------+-------+-------+-------+-------+-------+-------+-------+
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar * b | payload |
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar * c | payload |
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar * d | payload |
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar * e | payload |
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar * f | payload |
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar * +-------+-------+-------+-------+-------+-------+-------+-------+
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar * payload contains the embedded data
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar * B (byteorder) byteorder (endianness)
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar * D (dedup) padding (set to zero)
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar * X encryption (set to zero; see above)
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar * E (embedded) set to one
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar * lvl indirection level
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar * type DMU object type
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar * etype how to interpret embedded data (BP_EMBEDDED_TYPE_*)
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar * comp compression function of payload
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar * PSIZE size of payload after compression, in bytes
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar * LSIZE logical size of payload, in bytes
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar * note that 25 bits is enough to store the largest
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar * "normal" BP's LSIZE (2^16 * 2^9) in bytes
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar * log. birth transaction group in which the block was logically born
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar * Note that LSIZE and PSIZE are stored in bytes, whereas for non-embedded
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar * bp's they are stored in units of SPA_MINBLOCKSHIFT.
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar * Generally, the generic BP_GET_*() macros can be used on embedded BP's.
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar * The B, D, X, lvl, type, and comp fields are stored the same as with normal
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar * BP's so the BP_SET_* macros can be used with them. etype, PSIZE, LSIZE must
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar * be set with the BPE_SET_* macros. BP_SET_EMBEDDED() should be called before
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar * other macros, as they assert that they are only used on BP's of the correct
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar * "embedded-ness".
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar BP_EMBEDDED_TYPE_RESERVED, /* Reserved for an unintegrated feature. */
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar NUM_BP_EMBEDDED_TYPES = BP_EMBEDDED_TYPE_RESERVED
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar#define BPE_PAYLOAD_SIZE (BPE_NUM_WORDS * sizeof (uint64_t))
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar ((wp) != &(bp)->blk_prop && (wp) != &(bp)->blk_birth)
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar#define SPA_BLKPTRSHIFT 7 /* blkptr_t is 128 bytes */
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar#define SPA_DVAS_PER_BP 3 /* Number of DVAs in a bp */
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar * A block is a hole when it has either 1) never been written to, or
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar * 2) is zero-filled. In both cases, ZFS can return all zeroes for all reads
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar * without physically allocating disk space. Holes are represented in the
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar * blkptr_t structure by zeroed blk_dva. Correct checking for holes is
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar * done through the BP_IS_HOLE macro. For holes, the logical size, level,
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar * DMU object type, and birth times are all also stored for holes that
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar * were written to at some point (i.e. were punched after having been filled).
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdartypedef struct blkptr {
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar dva_t blk_dva[SPA_DVAS_PER_BP]; /* Data Virtual Addresses */
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar uint64_t blk_prop; /* size, compression, type, etc */
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar uint64_t blk_pad[2]; /* Extra space for the future */
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar uint64_t blk_phys_birth; /* txg when block was allocated */
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar uint64_t blk_birth; /* transaction group at birth */
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar * Macros to get and set fields in a bp or DVA.
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar BF64_GET_SB((dva)->dva_word[0], 0, SPA_ASIZEBITS, SPA_MINBLOCKSHIFT, 0)
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar BF64_SET_SB((dva)->dva_word[0], 0, SPA_ASIZEBITS, \
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar#define DVA_GET_GRID(dva) BF64_GET((dva)->dva_word[0], 24, 8)
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar#define DVA_SET_GRID(dva, x) BF64_SET((dva)->dva_word[0], 24, 8, x)
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar#define DVA_GET_VDEV(dva) BF64_GET((dva)->dva_word[0], 32, 32)
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar#define DVA_SET_VDEV(dva, x) BF64_SET((dva)->dva_word[0], 32, 32, x)
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar BF64_GET_SB((dva)->dva_word[1], 0, 63, SPA_MINBLOCKSHIFT, 0)
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar BF64_SET_SB((dva)->dva_word[1], 0, 63, SPA_MINBLOCKSHIFT, 0, x)
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar#define DVA_GET_GANG(dva) BF64_GET((dva)->dva_word[1], 63, 1)
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar#define DVA_SET_GANG(dva, x) BF64_SET((dva)->dva_word[1], 63, 1, x)
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar (BPE_GET_ETYPE(bp) == BP_EMBEDDED_TYPE_DATA ? BPE_GET_LSIZE(bp) : 0): \
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar BF64_GET_SB((bp)->blk_prop, 0, SPA_LSIZEBITS, SPA_MINBLOCKSHIFT, 1))
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar BF64_GET_SB((bp)->blk_prop, 16, SPA_PSIZEBITS, SPA_MINBLOCKSHIFT, 1))
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar#define BP_GET_COMPRESS(bp) BF64_GET((bp)->blk_prop, 32, 7)
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar#define BP_SET_COMPRESS(bp, x) BF64_SET((bp)->blk_prop, 32, 7, x)
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar#define BP_IS_EMBEDDED(bp) BF64_GET((bp)->blk_prop, 39, 1)
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar#define BP_SET_EMBEDDED(bp, x) BF64_SET((bp)->blk_prop, 39, 1, x)
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar#define BP_GET_TYPE(bp) BF64_GET((bp)->blk_prop, 48, 8)
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar#define BP_SET_TYPE(bp, x) BF64_SET((bp)->blk_prop, 48, 8, x)
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar#define BP_GET_LEVEL(bp) BF64_GET((bp)->blk_prop, 56, 5)
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar#define BP_SET_LEVEL(bp, x) BF64_SET((bp)->blk_prop, 56, 5, x)
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar#define BP_GET_DEDUP(bp) BF64_GET((bp)->blk_prop, 62, 1)
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar#define BP_SET_DEDUP(bp, x) BF64_SET((bp)->blk_prop, 62, 1, x)
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar#define BP_GET_BYTEORDER(bp) BF64_GET((bp)->blk_prop, 63, 1)
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar#define BP_SET_BYTEORDER(bp, x) BF64_SET((bp)->blk_prop, 63, 1, x)
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar (bp)->blk_phys_birth ? (bp)->blk_phys_birth : (bp)->blk_birth)
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar (bp)->blk_phys_birth = ((logical) == (physical) ? 0 : (physical)); \
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar#define BP_GET_FILL(bp) (BP_IS_EMBEDDED(bp) ? 1 : (bp)->blk_fill)
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar ((BP_GET_LEVEL(bp) > 0 || DMU_OT_IS_METADATA(BP_GET_TYPE(bp))) ? \
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar ((dva1)->dva_word[1] == (dva2)->dva_word[1] && \
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar (BP_PHYSICAL_BIRTH(bp1) == BP_PHYSICAL_BIRTH(bp2) && \
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar DVA_EQUAL(&(bp1)->blk_dva[0], &(bp2)->blk_dva[0]) && \
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar DVA_EQUAL(&(bp1)->blk_dva[1], &(bp2)->blk_dva[1]) && \
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar DVA_EQUAL(&(bp1)->blk_dva[2], &(bp2)->blk_dva[2]))
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar (0 == (((zc1).zc_word[0] - (zc2).zc_word[0]) | \
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar (zcp)->zc_word[0] = BSWAP_64((zcp)->zc_word[0]); \
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar (zcp)->zc_word[1] = BSWAP_64((zcp)->zc_word[1]); \
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar (zcp)->zc_word[2] = BSWAP_64((zcp)->zc_word[2]); \
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar (zcp)->zc_word[3] = BSWAP_64((zcp)->zc_word[3]); \
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar#define DVA_IS_VALID(dva) (DVA_GET_ASIZE(dva) != 0)
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar#define BP_IDENTITY(bp) (ASSERT(!BP_IS_EMBEDDED(bp)), &(bp)->blk_dva[0])
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar (BP_IS_EMBEDDED(bp) ? B_FALSE : DVA_GET_GANG(BP_IDENTITY(bp)))
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar#define DVA_IS_EMPTY(dva) ((dva)->dva_word[0] == 0ULL && \
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar (!BP_IS_EMBEDDED(bp) && DVA_IS_EMPTY(BP_IDENTITY(bp)))
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar/* BP_IS_RAIDZ(bp) assumes no block compression */
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar#define BP_IS_RAIDZ(bp) (DVA_GET_ASIZE(&(bp)->blk_dva[0]) > \
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar ZIO_SET_CHECKSUM(&(bp)->blk_cksum, 0, 0, 0, 0); \
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar#define BP_SHOULD_BYTESWAP(bp) (BP_GET_BYTEORDER(bp) != ZFS_HOST_BYTEORDER)
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar * This macro allows code sharing between zfs, libzpool, and mdb.
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar * 'func' is either snprintf() or mdb_snprintf().
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar * 'ws' (whitespace) can be ' ' for single-line format, '\n' for multi-line.
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar#define SNPRINTF_BLKPTR(func, ws, buf, size, bp, type, checksum, compress) \
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar static const char *copyname[] = \
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar "HOLE [L%llu %s] " \
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar "size=%llxL birth=%lluL", \
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar "EMBEDDED [L%llu %s] et=%u %s " \
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar "size=%llxL/%llxP birth=%lluL", \
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar "DVA[%d]=<%llu:%llx:%llx>%c", d, \
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar "[L%llu %s] %s %s %s %s %s %s%c" \
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar "size=%llxL/%llxP birth=%lluL/%lluP fill=%llu%c" \
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar "cksum=%llx:%llx:%llx:%llx", \
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar (((BP_GET_LEVEL(bp) > 0) || (DMU_OT_IS_METADATA(BP_GET_TYPE(bp)))) ? \
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar/* state manipulation functions */
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdarextern int spa_open(const char *pool, spa_t **, void *tag);
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdarextern int spa_open_rewind(const char *pool, spa_t **, void *tag,
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdarextern int spa_get_stats(const char *pool, nvlist_t **config, char *altroot,
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdarextern int spa_create(const char *pool, nvlist_t *config, nvlist_t *props,
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdarextern int spa_import_rootpool(char *devpath, char *devid);
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdarextern int spa_import(const char *pool, nvlist_t *config, nvlist_t *props,
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdarextern nvlist_t *spa_tryimport(nvlist_t *tryconfig);
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdarextern int spa_export(char *pool, nvlist_t **oldconfig, boolean_t force,
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdarextern void spa_async_request(spa_t *spa, int flag);
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdarextern void spa_async_unrequest(spa_t *spa, int flag);
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdarextern int spa_scan_get_stats(spa_t *spa, pool_scan_stat_t *ps);
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar * Controls the behavior of spa_vdev_remove().
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar/* device manipulation */
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdarextern int spa_vdev_add(spa_t *spa, nvlist_t *nvroot);
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdarextern int spa_vdev_attach(spa_t *spa, uint64_t guid, nvlist_t *nvroot,
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdarextern int spa_vdev_detach(spa_t *spa, uint64_t guid, uint64_t pguid,
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdarextern int spa_vdev_remove(spa_t *spa, uint64_t guid, boolean_t unspare);
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdarextern boolean_t spa_vdev_remove_active(spa_t *spa);
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdarextern int spa_vdev_setpath(spa_t *spa, uint64_t guid, const char *newpath);
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdarextern int spa_vdev_setfru(spa_t *spa, uint64_t guid, const char *newfru);
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdarextern int spa_vdev_split_mirror(spa_t *spa, char *newname, nvlist_t *config,
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar/* spare state (which is global across all pools) */
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdarextern boolean_t spa_spare_exists(uint64_t guid, uint64_t *pool, int *refcnt);
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar/* L2ARC state (which is global across all pools) */
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdarextern boolean_t spa_l2cache_exists(uint64_t guid, uint64_t *pool);
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar/* scanning */
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdarextern int spa_scan(spa_t *spa, pool_scan_func_t func);
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar/* spa syncing */
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdarextern void spa_sync(spa_t *spa, uint64_t txg); /* only for DMU use */
9ee94b97c8654689d6a034daec08757fda75d21aJan Krylextern void spa_sync_allpools(void);
9ee94b97c8654689d6a034daec08757fda75d21aJan Kryl/* spa namespace global mutex */
9ee94b97c8654689d6a034daec08757fda75d21aJan Kryl * SPA configuration functions in spa_config.c
9ee94b97c8654689d6a034daec08757fda75d21aJan Krylextern void spa_config_sync(spa_t *, boolean_t, boolean_t);
9ee94b97c8654689d6a034daec08757fda75d21aJan Krylextern void spa_config_load(void);
9ee94b97c8654689d6a034daec08757fda75d21aJan Krylextern void spa_config_set(spa_t *spa, nvlist_t *config);
9ee94b97c8654689d6a034daec08757fda75d21aJan Krylextern nvlist_t *spa_config_generate(spa_t *spa, vdev_t *vd, uint64_t txg,
9ee94b97c8654689d6a034daec08757fda75d21aJan Krylextern void spa_config_update(spa_t *spa, int what);
9ee94b97c8654689d6a034daec08757fda75d21aJan Kryl * Miscellaneous SPA routines in spa_misc.c
9ee94b97c8654689d6a034daec08757fda75d21aJan Kryl/* Namespace manipulation */
9ee94b97c8654689d6a034daec08757fda75d21aJan Krylextern spa_t *spa_add(const char *name, nvlist_t *config, const char *altroot);
9ee94b97c8654689d6a034daec08757fda75d21aJan Kryl/* Refcount functions */
9ee94b97c8654689d6a034daec08757fda75d21aJan Kryl#define SCL_STATE_ALL (SCL_STATE | SCL_L2ARC | SCL_ZIO)
9ee94b97c8654689d6a034daec08757fda75d21aJan Kryl/* Pool configuration locks */
9ee94b97c8654689d6a034daec08757fda75d21aJan Krylextern int spa_config_tryenter(spa_t *spa, int locks, void *tag, krw_t rw);
9ee94b97c8654689d6a034daec08757fda75d21aJan Krylextern void spa_config_enter(spa_t *spa, int locks, void *tag, krw_t rw);
9ee94b97c8654689d6a034daec08757fda75d21aJan Krylextern void spa_config_exit(spa_t *spa, int locks, void *tag);
9ee94b97c8654689d6a034daec08757fda75d21aJan Krylextern int spa_config_held(spa_t *spa, int locks, krw_t rw);
9ee94b97c8654689d6a034daec08757fda75d21aJan Kryl/* Pool vdev add/remove lock */
9ee94b97c8654689d6a034daec08757fda75d21aJan Krylextern void spa_vdev_config_exit(spa_t *spa, vdev_t *vd, uint64_t txg,
9ee94b97c8654689d6a034daec08757fda75d21aJan Krylextern int spa_vdev_exit(spa_t *spa, vdev_t *vd, uint64_t txg, int error);
9ee94b97c8654689d6a034daec08757fda75d21aJan Kryl/* Pool vdev state change lock */
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdarextern void spa_vdev_state_enter(spa_t *spa, int oplock);
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdarextern int spa_vdev_state_exit(spa_t *spa, vdev_t *vd, int error);
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar/* Log state */
9ee94b97c8654689d6a034daec08757fda75d21aJan Krylextern spa_log_state_t spa_get_log_state(spa_t *spa);
9ee94b97c8654689d6a034daec08757fda75d21aJan Krylextern void spa_set_log_state(spa_t *spa, spa_log_state_t state);
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar/* Log claim callback */
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar/* Accessor functions */
9ee94b97c8654689d6a034daec08757fda75d21aJan Krylextern void spa_set_rootblkptr(spa_t *spa, const blkptr_t *bp);
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdarextern void spa_altroot(spa_t *, char *, size_t);
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdarextern spa_load_state_t spa_load_state(spa_t *spa);
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdarextern uint64_t spa_get_asize(spa_t *spa, uint64_t lsize);
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdarextern metaslab_class_t *spa_normal_class(spa_t *spa);
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdarextern metaslab_class_t *spa_log_class(spa_t *spa);
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdarextern void spa_evicting_os_register(spa_t *, objset_t *os);
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdarextern void spa_evicting_os_deregister(spa_t *, objset_t *os);
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdarextern int spa_prev_software_version(spa_t *spa);
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdarextern int spa_busy(void);
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdarextern uint64_t spa_deadman_synctime(spa_t *spa);
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar/* Miscellaneous support routines */
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdarextern void spa_activate_mos_feature(spa_t *spa, const char *feature,
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdarextern void spa_deactivate_mos_feature(spa_t *spa, const char *feature);
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdarextern int spa_rename(const char *oldname, const char *newname);
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdarextern spa_t *spa_by_guid(uint64_t pool_guid, uint64_t device_guid);
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdarextern boolean_t spa_guid_exists(uint64_t pool_guid, uint64_t device_guid);
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdarextern char *spa_strdup(const char *);
9ee94b97c8654689d6a034daec08757fda75d21aJan Krylextern void spa_strfree(char *);
9ee94b97c8654689d6a034daec08757fda75d21aJan Krylextern void snprintf_blkptr(char *buf, size_t buflen, const blkptr_t *bp);
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdarextern void spa_upgrade(spa_t *spa, uint64_t version);
9ee94b97c8654689d6a034daec08757fda75d21aJan Krylextern void spa_evict_all(void);
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdarextern vdev_t *spa_lookup_by_guid(spa_t *spa, uint64_t guid,
9ee94b97c8654689d6a034daec08757fda75d21aJan Krylextern boolean_t spa_has_spare(spa_t *, uint64_t guid);
9ee94b97c8654689d6a034daec08757fda75d21aJan Krylextern uint64_t dva_get_dsize_sync(spa_t *spa, const dva_t *dva);
9ee94b97c8654689d6a034daec08757fda75d21aJan Krylextern uint64_t bp_get_dsize_sync(spa_t *spa, const blkptr_t *bp);
9ee94b97c8654689d6a034daec08757fda75d21aJan Krylextern uint64_t bp_get_dsize(spa_t *spa, const blkptr_t *bp);
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdarextern boolean_t spa_has_pending_synctask(spa_t *spa);
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdarextern void zfs_blkptr_verify(spa_t *spa, const blkptr_t *bp);
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdarextern uint64_t strtonum(const char *str, char **nptr);
9ee94b97c8654689d6a034daec08757fda75d21aJan Krylextern void spa_history_create_obj(spa_t *spa, dmu_tx_t *tx);
9ee94b97c8654689d6a034daec08757fda75d21aJan Krylextern int spa_history_get(spa_t *spa, uint64_t *offset, uint64_t *len_read,
9ee94b97c8654689d6a034daec08757fda75d21aJan Krylextern int spa_history_log(spa_t *spa, const char *his_buf);
9ee94b97c8654689d6a034daec08757fda75d21aJan Krylextern int spa_history_log_nvl(spa_t *spa, nvlist_t *nvl);
9ee94b97c8654689d6a034daec08757fda75d21aJan Krylextern void spa_history_log_version(spa_t *spa, const char *operation);
9ee94b97c8654689d6a034daec08757fda75d21aJan Krylextern void spa_history_log_internal(spa_t *spa, const char *operation,
9ee94b97c8654689d6a034daec08757fda75d21aJan Krylextern void spa_history_log_internal_ds(struct dsl_dataset *ds, const char *op,
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdarextern void spa_history_log_internal_dd(dsl_dir_t *dd, const char *operation,
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar/* error handling */
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdarextern void spa_log_error(spa_t *spa, zio_t *zio);
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdarextern void zfs_ereport_post(const char *class, spa_t *spa, vdev_t *vd,
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar zio_t *zio, uint64_t stateoroffset, uint64_t length);
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdarextern void zfs_post_remove(spa_t *spa, vdev_t *vd);
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdarextern void zfs_post_state_change(spa_t *spa, vdev_t *vd);
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdarextern void zfs_post_autoreplace(spa_t *spa, vdev_t *vd);
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdarextern int spa_get_errlog(spa_t *spa, void *uaddr, size_t *count);
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdarextern void spa_errlog_sync(spa_t *spa, uint64_t txg);
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdarextern void spa_get_errlists(spa_t *spa, avl_tree_t *last, avl_tree_t *scrub);
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar/* vdev cache */
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdarextern void vdev_cache_stat_init(void);
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdarextern void vdev_cache_stat_fini(void);
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar/* Initialization and termination */
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdarextern void spa_fini(void);
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar/* properties */
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdarextern int spa_prop_set(spa_t *spa, nvlist_t *nvp);
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdarextern int spa_prop_get(spa_t *spa, nvlist_t **nvp);
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdarextern void spa_prop_clear_bootfs(spa_t *spa, uint64_t obj, dmu_tx_t *tx);
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdarextern void spa_configfile_set(spa_t *, nvlist_t *, boolean_t);
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar/* asynchronous event notification */
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdarextern void spa_event_notify(spa_t *spa, vdev_t *vdev, const char *name);
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar char *__blkbuf = kmem_alloc(BP_SPRINTF_LEN, KM_SLEEP); \
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdar snprintf_blkptr(__blkbuf, BP_SPRINTF_LEN, (bp)); \
2654012f83cec5dc15b61dfe3e4a4915f186e7a6Reza Sabdarextern int spa_mode_global; /* mode, e.g. FREAD | FWRITE */
9ee94b97c8654689d6a034daec08757fda75d21aJan Kryl#endif /* _SYS_SPA_H */