spa.h revision 1195e687f1c03c8d57417b5999578922e20a3554
843e19887f64dde75055cf8842fc4db2171eff45johnlev * CDDL HEADER START
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843e19887f64dde75055cf8842fc4db2171eff45johnlev * CDDL HEADER END
843e19887f64dde75055cf8842fc4db2171eff45johnlev * Copyright 2010 Sun Microsystems, Inc. All rights reserved.
843e19887f64dde75055cf8842fc4db2171eff45johnlev * Use is subject to license terms.
843e19887f64dde75055cf8842fc4db2171eff45johnlevextern "C" {
843e19887f64dde75055cf8842fc4db2171eff45johnlev * Forward references that lots of things need.
843e19887f64dde75055cf8842fc4db2171eff45johnlev * General-purpose 32-bit and 64-bit bitfield encodings.
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#define BF32_GET(x, low, len) BF32_DECODE(x, low, len)
843e19887f64dde75055cf8842fc4db2171eff45johnlev#define BF64_GET(x, low, len) BF64_DECODE(x, low, len)
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#define SPA_BLOCKSIZES (SPA_MAXBLOCKSHIFT - SPA_MINBLOCKSHIFT + 1)
843e19887f64dde75055cf8842fc4db2171eff45johnlev * Size of block to hold the configuration data (a packed nvlist)
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#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 */
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.
843e19887f64dde75055cf8842fc4db2171eff45johnlevtypedef struct dva {
843e19887f64dde75055cf8842fc4db2171eff45johnlev * Each block has a 256-bit checksum -- strong enough for cryptographic hashes.
843e19887f64dde75055cf8842fc4db2171eff45johnlevtypedef struct zio_cksum {
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 * 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 * 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 * 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#define SPA_BLKPTRSHIFT 7 /* blkptr_t is 128 bytes */
843e19887f64dde75055cf8842fc4db2171eff45johnlev#define SPA_DVAS_PER_BP 3 /* Number of DVAs in a bp */
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 * Macros to get and set fields in a bp or DVA.
843e19887f64dde75055cf8842fc4db2171eff45johnlev BF64_GET_SB((dva)->dva_word[0], 0, 24, SPA_MINBLOCKSHIFT, 0)
843e19887f64dde75055cf8842fc4db2171eff45johnlev BF64_SET_SB((dva)->dva_word[0], 0, 24, SPA_MINBLOCKSHIFT, 0, x)
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#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 BF64_GET_SB((dva)->dva_word[1], 0, 63, SPA_MINBLOCKSHIFT, 0)
843e19887f64dde75055cf8842fc4db2171eff45johnlev BF64_SET_SB((dva)->dva_word[1], 0, 63, SPA_MINBLOCKSHIFT, 0, x)
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 BF64_GET_SB((bp)->blk_prop, 0, 16, SPA_MINBLOCKSHIFT, 1)
843e19887f64dde75055cf8842fc4db2171eff45johnlev BF64_SET_SB((bp)->blk_prop, 0, 16, SPA_MINBLOCKSHIFT, 1, x)
843e19887f64dde75055cf8842fc4db2171eff45johnlev BF64_GET_SB((bp)->blk_prop, 16, 16, SPA_MINBLOCKSHIFT, 1)
843e19887f64dde75055cf8842fc4db2171eff45johnlev BF64_SET_SB((bp)->blk_prop, 16, 16, SPA_MINBLOCKSHIFT, 1, x)
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#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#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#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#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#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#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 ((bp)->blk_phys_birth ? (bp)->blk_phys_birth : (bp)->blk_birth)
843e19887f64dde75055cf8842fc4db2171eff45johnlev (bp)->blk_phys_birth = ((logical) == (physical) ? 0 : (physical)); \
843e19887f64dde75055cf8842fc4db2171eff45johnlev (DVA_GET_ASIZE(&(bp)->blk_dva[0]) + DVA_GET_ASIZE(&(bp)->blk_dva[1]) + \
843e19887f64dde75055cf8842fc4db2171eff45johnlev ((BP_GET_LEVEL(bp) > 0 || dmu_ot[BP_GET_TYPE(bp)].ot_metadata) ? \
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 * Note: the byteorder is either 0 or -1, both of which are palindromes.
843e19887f64dde75055cf8842fc4db2171eff45johnlev * This simplifies the endianness handling a bit.
843e19887f64dde75055cf8842fc4db2171eff45johnlev#define BP_SHOULD_BYTESWAP(bp) (BP_GET_BYTEORDER(bp) != ZFS_HOST_BYTEORDER)
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#define SPRINTF_BLKPTR(func, ws, buf, bp, type, checksum, compress) \
843e19887f64dde75055cf8842fc4db2171eff45johnlev static const char *copyname[] = \
843e19887f64dde75055cf8842fc4db2171eff45johnlev "DVA[%d]=<%llu:%llx:%llx>%c", d, \
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 (((BP_GET_LEVEL(bp) > 0) || (dmu_ot[BP_GET_TYPE(bp)].ot_metadata)) ? \
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,
843e19887f64dde75055cf8842fc4db2171eff45johnlevextern int spa_get_stats(const char *pool, nvlist_t **config,
843e19887f64dde75055cf8842fc4db2171eff45johnlevextern int spa_create(const char *pool, nvlist_t *config, nvlist_t *props,
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 int spa_export(char *pool, nvlist_t **oldconfig, boolean_t force,
843e19887f64dde75055cf8842fc4db2171eff45johnlevextern void spa_async_unrequest(spa_t *spa, int flag);
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,
843e19887f64dde75055cf8842fc4db2171eff45johnlevextern int spa_vdev_detach(spa_t *spa, uint64_t guid, uint64_t pguid,
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/* spare state (which is global across all pools) */
843e19887f64dde75055cf8842fc4db2171eff45johnlevextern boolean_t spa_spare_exists(uint64_t guid, uint64_t *pool, int *refcnt);
843e19887f64dde75055cf8842fc4db2171eff45johnlev/* L2ARC state (which is global across all pools) */
843e19887f64dde75055cf8842fc4db2171eff45johnlevextern boolean_t spa_l2cache_exists(uint64_t guid, uint64_t *pool);
843e19887f64dde75055cf8842fc4db2171eff45johnlev/* scrubbing */
843e19887f64dde75055cf8842fc4db2171eff45johnlevextern int spa_scrub(spa_t *spa, pool_scrub_type_t type);
843e19887f64dde75055cf8842fc4db2171eff45johnlev/* spa syncing */
843e19887f64dde75055cf8842fc4db2171eff45johnlevextern void spa_sync(spa_t *spa, uint64_t txg); /* only for DMU use */
843e19887f64dde75055cf8842fc4db2171eff45johnlevextern void spa_sync_allpools(void);
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/* spa namespace global mutex */
843e19887f64dde75055cf8842fc4db2171eff45johnlev * SPA configuration functions in spa_config.c
843e19887f64dde75055cf8842fc4db2171eff45johnlevextern void spa_config_sync(spa_t *, boolean_t, boolean_t);
843e19887f64dde75055cf8842fc4db2171eff45johnlevextern void spa_config_load(void);
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 * Miscellaneous SPA routines in spa_misc.c
843e19887f64dde75055cf8842fc4db2171eff45johnlev/* Namespace manipulation */
843e19887f64dde75055cf8842fc4db2171eff45johnlevextern spa_t *spa_add(const char *name, nvlist_t *config, const char *altroot);
843e19887f64dde75055cf8842fc4db2171eff45johnlev/* Refcount functions */
843e19887f64dde75055cf8842fc4db2171eff45johnlev#define SCL_STATE_ALL (SCL_STATE | SCL_L2ARC | SCL_ZIO)
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/* Pool vdev add/remove lock */
843e19887f64dde75055cf8842fc4db2171eff45johnlevextern void spa_vdev_config_exit(spa_t *spa, vdev_t *vd, uint64_t txg,
843e19887f64dde75055cf8842fc4db2171eff45johnlevextern int spa_vdev_exit(spa_t *spa, vdev_t *vd, uint64_t txg, int error);
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/* Log state */
843e19887f64dde75055cf8842fc4db2171eff45johnlevtypedef enum spa_log_state {
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);
843e19887f64dde75055cf8842fc4db2171eff45johnlev/* Log claim callback */
843e19887f64dde75055cf8842fc4db2171eff45johnlev/* Accessor functions */
843e19887f64dde75055cf8842fc4db2171eff45johnlevextern void spa_set_rootblkptr(spa_t *spa, const blkptr_t *bp);
extern int spa_busy(void);
extern char *spa_strdup(const char *);
extern void spa_strfree(char *);
extern void spa_evict_all(void);
typedef enum history_log_type {
typedef struct history_arg {
const char *ha_history_str;
extern char *spa_his_ievent_table[];
char *his_buf);
struct zbookmark;
extern void vdev_cache_stat_init(void);
extern void vdev_cache_stat_fini(void);
extern void spa_fini(void);
extern void spa_boot_init();
#ifdef ZFS_DEBUG
#ifdef __cplusplus