spa.h revision 573ca77e53dd31dcaebef023e7eb41969e6896c1
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor * CDDL HEADER START
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor * The contents of this file are subject to the terms of the
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor * Common Development and Distribution License (the "License").
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor * You may not use this file except in compliance with the License.
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor * See the License for the specific language governing permissions
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor * and limitations under the License.
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor * When distributing Covered Code, include this CDDL HEADER in each
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
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9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor * fields enclosed by brackets "[]" replaced with your own identifying
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor * information: Portions Copyright [yyyy] [name of copyright owner]
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor * CDDL HEADER END
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor * Copyright 2009 Sun Microsystems, Inc. All rights reserved.
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor * Use is subject to license terms.
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor * Forward references that lots of things need.
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor * General-purpose 32-bit and 64-bit bitfield encodings.
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor#define BF32_DECODE(x, low, len) P2PHASE((x) >> (low), 1U << (len))
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor#define BF64_DECODE(x, low, len) P2PHASE((x) >> (low), 1ULL << (len))
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor#define BF32_ENCODE(x, low, len) (P2PHASE((x), 1U << (len)) << (low))
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor#define BF64_ENCODE(x, low, len) (P2PHASE((x), 1ULL << (len)) << (low))
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor#define BF32_GET(x, low, len) BF32_DECODE(x, low, len)
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor#define BF64_GET(x, low, len) BF64_DECODE(x, low, len)
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor ((x) ^= BF32_ENCODE((x >> low) ^ (val), low, len))
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor ((x) ^= BF64_ENCODE((x >> low) ^ (val), low, len))
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor#define BF32_SET_SB(x, low, len, shift, bias, val) \
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor BF32_SET(x, low, len, ((val) >> (shift)) - (bias))
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor#define BF64_SET_SB(x, low, len, shift, bias, val) \
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor BF64_SET(x, low, len, ((val) >> (shift)) - (bias))
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor * We currently support nine block sizes, from 512 bytes to 128K.
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor * We could go higher, but the benefits are near-zero and the cost
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor * of COWing a giant block to modify one byte would become excessive.
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor#define SPA_MINBLOCKSIZE (1ULL << SPA_MINBLOCKSHIFT)
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor#define SPA_MAXBLOCKSIZE (1ULL << SPA_MAXBLOCKSHIFT)
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor#define SPA_BLOCKSIZES (SPA_MAXBLOCKSHIFT - SPA_MINBLOCKSHIFT + 1)
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor * Size of block to hold the configuration data (a packed nvlist)
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor * The DVA size encodings for LSIZE and PSIZE support blocks up to 32MB.
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor * The ASIZE encoding should be at least 64 times larger (6 more bits)
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor * to support up to 4-way RAID-Z mirror mode with worst-case gang block
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor * overhead, three DVAs per bp, plus one more bit in case we do anything
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor * else that expands the ASIZE.
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor#define SPA_LSIZEBITS 16 /* LSIZE up to 32M (2^16 * 512) */
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor#define SPA_PSIZEBITS 16 /* PSIZE up to 32M (2^16 * 512) */
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor#define SPA_ASIZEBITS 24 /* ASIZE up to 64 times larger */
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor * All SPA data is represented by 128-bit data virtual addresses (DVAs).
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor * The members of the dva_t should be considered opaque outside the SPA.
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylortypedef struct dva {
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor * Each block has a 256-bit checksum -- strong enough for cryptographic hashes.
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylortypedef struct zio_cksum {
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor * Each block is described by its DVAs, time of birth, checksum, etc.
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor * The word-by-word, bit-by-bit layout of the blkptr is as follows:
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor * 64 56 48 40 32 24 16 8 0
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor * +-------+-------+-------+-------+-------+-------+-------+-------+
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor * 0 | vdev1 | GRID | ASIZE |
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor * +-------+-------+-------+-------+-------+-------+-------+-------+
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor * 1 |G| offset1 |
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor * +-------+-------+-------+-------+-------+-------+-------+-------+
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor * 2 | vdev2 | GRID | ASIZE |
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor * +-------+-------+-------+-------+-------+-------+-------+-------+
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor * 3 |G| offset2 |
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor * +-------+-------+-------+-------+-------+-------+-------+-------+
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor * 4 | vdev3 | GRID | ASIZE |
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor * +-------+-------+-------+-------+-------+-------+-------+-------+
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor * 5 |G| offset3 |
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor * +-------+-------+-------+-------+-------+-------+-------+-------+
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor * 6 |E| lvl | type | cksum | comp | PSIZE | LSIZE |
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor * +-------+-------+-------+-------+-------+-------+-------+-------+
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor * 7 | padding |
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor * +-------+-------+-------+-------+-------+-------+-------+-------+
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor * 8 | padding |
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor * +-------+-------+-------+-------+-------+-------+-------+-------+
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor * 9 | padding |
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor * +-------+-------+-------+-------+-------+-------+-------+-------+
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor * a | birth txg |
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor * +-------+-------+-------+-------+-------+-------+-------+-------+
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor * b | fill count |
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor * +-------+-------+-------+-------+-------+-------+-------+-------+
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor * c | checksum[0] |
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor * +-------+-------+-------+-------+-------+-------+-------+-------+
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor * d | checksum[1] |
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor * +-------+-------+-------+-------+-------+-------+-------+-------+
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor * e | checksum[2] |
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor * +-------+-------+-------+-------+-------+-------+-------+-------+
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor * f | checksum[3] |
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor * +-------+-------+-------+-------+-------+-------+-------+-------+
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor * vdev virtual device ID
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor * offset offset into virtual device
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor * LSIZE logical size
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor * PSIZE physical size (after compression)
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor * ASIZE allocated size (including RAID-Z parity and gang block headers)
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor * GRID RAID-Z layout information (reserved for future use)
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor * cksum checksum function
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor * comp compression function
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor * G gang block indicator
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor * E endianness
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor * type DMU object type
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor * lvl level of indirection
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor * birth txg transaction group in which the block was born
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor * fill count number of non-zero blocks under this bp
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor * checksum[4] 256-bit checksum of the data this bp describes
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylortypedef struct blkptr {
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor dva_t blk_dva[3]; /* 128-bit Data Virtual Address */
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor uint64_t blk_prop; /* size, compression, type, etc */
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor uint64_t blk_pad[3]; /* Extra space for the future */
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor uint64_t blk_birth; /* transaction group at birth */
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor#define SPA_BLKPTRSHIFT 7 /* blkptr_t is 128 bytes */
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor#define SPA_DVAS_PER_BP 3 /* Number of DVAs in a bp */
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor * Macros to get and set fields in a bp or DVA.
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor BF64_GET_SB((dva)->dva_word[0], 0, 24, SPA_MINBLOCKSHIFT, 0)
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor BF64_SET_SB((dva)->dva_word[0], 0, 24, SPA_MINBLOCKSHIFT, 0, x)
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor#define DVA_GET_GRID(dva) BF64_GET((dva)->dva_word[0], 24, 8)
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor#define DVA_SET_GRID(dva, x) BF64_SET((dva)->dva_word[0], 24, 8, x)
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor#define DVA_GET_VDEV(dva) BF64_GET((dva)->dva_word[0], 32, 32)
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor#define DVA_SET_VDEV(dva, x) BF64_SET((dva)->dva_word[0], 32, 32, x)
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor BF64_GET_SB((dva)->dva_word[1], 0, 63, SPA_MINBLOCKSHIFT, 0)
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor BF64_SET_SB((dva)->dva_word[1], 0, 63, SPA_MINBLOCKSHIFT, 0, x)
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor#define DVA_GET_GANG(dva) BF64_GET((dva)->dva_word[1], 63, 1)
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor#define DVA_SET_GANG(dva, x) BF64_SET((dva)->dva_word[1], 63, 1, x)
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor BF64_GET_SB((bp)->blk_prop, 0, 16, SPA_MINBLOCKSHIFT, 1))
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor BF64_SET_SB((bp)->blk_prop, 0, 16, SPA_MINBLOCKSHIFT, 1, x)
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor BF64_GET_SB((bp)->blk_prop, 16, 16, SPA_MINBLOCKSHIFT, 1)
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor BF64_SET_SB((bp)->blk_prop, 16, 16, SPA_MINBLOCKSHIFT, 1, x)
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor#define BP_GET_COMPRESS(bp) BF64_GET((bp)->blk_prop, 32, 8)
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor#define BP_SET_COMPRESS(bp, x) BF64_SET((bp)->blk_prop, 32, 8, x)
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor#define BP_GET_CHECKSUM(bp) BF64_GET((bp)->blk_prop, 40, 8)
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor#define BP_SET_CHECKSUM(bp, x) BF64_SET((bp)->blk_prop, 40, 8, x)
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor#define BP_GET_TYPE(bp) BF64_GET((bp)->blk_prop, 48, 8)
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor#define BP_SET_TYPE(bp, x) BF64_SET((bp)->blk_prop, 48, 8, x)
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor#define BP_GET_LEVEL(bp) BF64_GET((bp)->blk_prop, 56, 5)
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor#define BP_SET_LEVEL(bp, x) BF64_SET((bp)->blk_prop, 56, 5, x)
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor#define BP_GET_BYTEORDER(bp) (0 - BF64_GET((bp)->blk_prop, 63, 1))
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor#define BP_SET_BYTEORDER(bp, x) BF64_SET((bp)->blk_prop, 63, 1, x)
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor (DVA_GET_ASIZE(&(bp)->blk_dva[0]) + DVA_GET_ASIZE(&(bp)->blk_dva[1]) + \
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor ((BP_GET_LEVEL(bp) > 0 || dmu_ot[BP_GET_TYPE(bp)].ot_metadata) ? \
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor ((dva1)->dva_word[1] == (dva2)->dva_word[1] && \
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor (0 == (((zc1).zc_word[0] - (zc2).zc_word[0]) | \
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor#define DVA_IS_VALID(dva) (DVA_GET_ASIZE(dva) != 0)
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor#define BP_IS_GANG(bp) DVA_GET_GANG(BP_IDENTITY(bp))
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor#define BP_IS_OLDER(bp, txg) (!BP_IS_HOLE(bp) && (bp)->blk_birth < (txg))
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor ZIO_SET_CHECKSUM(&(bp)->blk_cksum, 0, 0, 0, 0); \
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor * Note: the byteorder is either 0 or -1, both of which are palindromes.
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor * This simplifies the endianness handling a bit.
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor#define BP_SHOULD_BYTESWAP(bp) (BP_GET_BYTEORDER(bp) != ZFS_HOST_BYTEORDER)
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor (((BP_GET_LEVEL(bp) > 0) || (dmu_ot[BP_GET_TYPE(bp)].ot_metadata)) ? \
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor * Routines found in spa.c
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor/* state manipulation functions */
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylorextern int spa_open(const char *pool, spa_t **, void *tag);
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylorextern int spa_get_stats(const char *pool, nvlist_t **config,
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylorextern int spa_create(const char *pool, nvlist_t *config, nvlist_t *props,
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylorextern int spa_import_rootpool(char *devpath, char *devid);
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylorextern int spa_import(const char *pool, nvlist_t *config, nvlist_t *props);
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylorextern int spa_import_verbatim(const char *, nvlist_t *, nvlist_t *);
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylorextern nvlist_t *spa_tryimport(nvlist_t *tryconfig);
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylorextern int spa_export(char *pool, nvlist_t **oldconfig, boolean_t force,
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylorextern void spa_async_request(spa_t *spa, int flag);
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylorextern void spa_async_unrequest(spa_t *spa, int flag);
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor/* device manipulation */
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylorextern int spa_vdev_add(spa_t *spa, nvlist_t *nvroot);
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylorextern int spa_vdev_attach(spa_t *spa, uint64_t guid, nvlist_t *nvroot,
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylorextern int spa_vdev_detach(spa_t *spa, uint64_t guid, uint64_t pguid,
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylorextern int spa_vdev_remove(spa_t *spa, uint64_t guid, boolean_t unspare);
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylorextern int spa_vdev_setpath(spa_t *spa, uint64_t guid, const char *newpath);
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylorextern int spa_vdev_setfru(spa_t *spa, uint64_t guid, const char *newfru);
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor/* spare state (which is global across all pools) */
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylorextern boolean_t spa_spare_exists(uint64_t guid, uint64_t *pool, int *refcnt);
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor/* L2ARC state (which is global across all pools) */
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylorextern boolean_t spa_l2cache_exists(uint64_t guid, uint64_t *pool);
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylorextern void spa_l2cache_space_update(vdev_t *vd, int64_t space, int64_t alloc);
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor/* scrubbing */
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylorextern int spa_scrub(spa_t *spa, pool_scrub_type_t type);
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor/* spa syncing */
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylorextern void spa_sync(spa_t *spa, uint64_t txg); /* only for DMU use */
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylorextern void spa_sync_allpools(void);
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor/* spa namespace global mutex */
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor * SPA configuration functions in spa_config.c
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylorextern void spa_config_sync(spa_t *, boolean_t, boolean_t);
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylorextern void spa_config_load(void);
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylorextern void spa_config_set(spa_t *spa, nvlist_t *config);
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylorextern nvlist_t *spa_config_generate(spa_t *spa, vdev_t *vd, uint64_t txg,
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylorextern void spa_config_update(spa_t *spa, int what);
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylorextern void spa_config_update_common(spa_t *spa, int what, boolean_t isroot);
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor * Miscellaneous SPA routines in spa_misc.c
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor/* Namespace manipulation */
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylorextern spa_t *spa_add(const char *name, const char *altroot);
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor/* Refcount functions */
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor#define SCL_L2ARC 0x04 /* hack until L2ARC 2.0 */
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor#define SCL_STATE_ALL (SCL_STATE | SCL_L2ARC | SCL_ZIO)
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor/* Pool configuration locks */
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylorextern int spa_config_tryenter(spa_t *spa, int locks, void *tag, krw_t rw);
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylorextern void spa_config_enter(spa_t *spa, int locks, void *tag, krw_t rw);
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylorextern void spa_config_exit(spa_t *spa, int locks, void *tag);
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylorextern int spa_config_held(spa_t *spa, int locks, krw_t rw);
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor/* Pool vdev add/remove lock */
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylorextern int spa_vdev_exit(spa_t *spa, vdev_t *vd, uint64_t txg, int error);
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor/* Pool vdev state change lock */
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylorextern int spa_vdev_state_exit(spa_t *spa, vdev_t *vd, int error);
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor/* Accessor functions */
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylorextern void spa_set_rootblkptr(spa_t *spa, const blkptr_t *bp);
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylorextern void spa_altroot(spa_t *, char *, size_t);
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylorextern uint64_t spa_get_asize(spa_t *spa, uint64_t lsize);
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylorextern int spa_busy(void);
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor/* Miscellaneous support routines */
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylorextern int spa_rename(const char *oldname, const char *newname);
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylorextern boolean_t spa_guid_exists(uint64_t pool_guid, uint64_t device_guid);
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylorextern char *spa_strdup(const char *);
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylorextern void spa_strfree(char *);
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylorextern void sprintf_blkptr(char *buf, int len, const blkptr_t *bp);
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylorextern void spa_upgrade(spa_t *spa, uint64_t version);
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylorextern void spa_evict_all(void);
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylorextern vdev_t *spa_lookup_by_guid(spa_t *spa, uint64_t guid,
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylorextern boolean_t spa_has_spare(spa_t *, uint64_t guid);
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylorextern uint64_t bp_get_dasize(spa_t *spa, const blkptr_t *bp);
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor/* history logging */
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylortypedef struct history_arg {
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylorextern void spa_history_create_obj(spa_t *spa, dmu_tx_t *tx);
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylorextern int spa_history_get(spa_t *spa, uint64_t *offset, uint64_t *len_read,
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylorextern int spa_history_log(spa_t *spa, const char *his_buf,
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylorvoid spa_history_internal_log(history_internal_events_t event, spa_t *spa,
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor dmu_tx_t *tx, cred_t *cr, const char *fmt, ...);
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor/* error handling */
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylorextern void spa_log_error(spa_t *spa, struct zio *zio);
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylorextern void zfs_ereport_post(const char *class, spa_t *spa, vdev_t *vd,
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor struct zio *zio, uint64_t stateoroffset, uint64_t length);
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylorextern void zfs_post_remove(spa_t *spa, vdev_t *vd);
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylorextern void zfs_post_autoreplace(spa_t *spa, vdev_t *vd);
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylorextern int spa_get_errlog(spa_t *spa, void *uaddr, size_t *count);
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylorextern void spa_errlog_sync(spa_t *spa, uint64_t txg);
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylorextern void spa_get_errlists(spa_t *spa, avl_tree_t *last, avl_tree_t *scrub);
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor/* vdev cache */
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylorextern void vdev_cache_stat_init(void);
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylorextern void vdev_cache_stat_fini(void);
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor/* Initialization and termination */
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylorextern void spa_fini(void);
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor/* properties */
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylorextern int spa_prop_set(spa_t *spa, nvlist_t *nvp);
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylorextern int spa_prop_get(spa_t *spa, nvlist_t **nvp);
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylorextern void spa_prop_clear_bootfs(spa_t *spa, uint64_t obj, dmu_tx_t *tx);
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylorextern void spa_configfile_set(spa_t *, nvlist_t *, boolean_t);
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor/* asynchronous event notification */
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylorextern void spa_event_notify(spa_t *spa, vdev_t *vdev, const char *name);
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor char *__blkbuf = kmem_alloc(BP_SPRINTF_LEN, KM_SLEEP); \
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor sprintf_blkptr(__blkbuf, BP_SPRINTF_LEN, (bp)); \
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylorextern int spa_mode_global; /* mode, e.g. FREAD | FWRITE */
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor#endif /* _SYS_SPA_H */