diff options
Diffstat (limited to 'module/zfs/include/sys/zio.h')
| -rw-r--r-- | module/zfs/include/sys/zio.h | 340 |
1 files changed, 223 insertions, 117 deletions
diff --git a/module/zfs/include/sys/zio.h b/module/zfs/include/sys/zio.h index e47d8f468..0400c1702 100644 --- a/module/zfs/include/sys/zio.h +++ b/module/zfs/include/sys/zio.h @@ -20,8 +20,7 @@ */ /* - * Copyright 2009 Sun Microsystems, Inc. All rights reserved. - * Use is subject to license terms. + * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved. */ #ifndef _ZIO_H @@ -38,12 +37,15 @@ extern "C" { #endif -#define ZBT_MAGIC 0x210da7ab10c7a11ULL /* zio data bloc tail */ +/* + * Embedded checksum + */ +#define ZEC_MAGIC 0x210da7ab10c7a11ULL -typedef struct zio_block_tail { - uint64_t zbt_magic; /* for validation, endianness */ - zio_cksum_t zbt_cksum; /* 256-bit checksum */ -} zio_block_tail_t; +typedef struct zio_eck { + uint64_t zec_magic; /* for validation, endianness */ + zio_cksum_t zec_cksum; /* 256-bit checksum */ +} zio_eck_t; /* * Gang block headers are self-checksumming and contain an array @@ -51,16 +53,16 @@ typedef struct zio_block_tail { */ #define SPA_GANGBLOCKSIZE SPA_MINBLOCKSIZE #define SPA_GBH_NBLKPTRS ((SPA_GANGBLOCKSIZE - \ - sizeof (zio_block_tail_t)) / sizeof (blkptr_t)) + sizeof (zio_eck_t)) / sizeof (blkptr_t)) #define SPA_GBH_FILLER ((SPA_GANGBLOCKSIZE - \ - sizeof (zio_block_tail_t) - \ + sizeof (zio_eck_t) - \ (SPA_GBH_NBLKPTRS * sizeof (blkptr_t))) /\ sizeof (uint64_t)) typedef struct zio_gbh { blkptr_t zg_blkptr[SPA_GBH_NBLKPTRS]; uint64_t zg_filler[SPA_GBH_FILLER]; - zio_block_tail_t zg_tail; + zio_eck_t zg_tail; } zio_gbh_phys_t; enum zio_checksum { @@ -73,12 +75,19 @@ enum zio_checksum { ZIO_CHECKSUM_FLETCHER_2, ZIO_CHECKSUM_FLETCHER_4, ZIO_CHECKSUM_SHA256, + ZIO_CHECKSUM_ZILOG2, ZIO_CHECKSUM_FUNCTIONS }; #define ZIO_CHECKSUM_ON_VALUE ZIO_CHECKSUM_FLETCHER_4 #define ZIO_CHECKSUM_DEFAULT ZIO_CHECKSUM_ON +#define ZIO_CHECKSUM_MASK 0xffULL +#define ZIO_CHECKSUM_VERIFY (1 << 8) + +#define ZIO_DEDUPCHECKSUM ZIO_CHECKSUM_SHA256 +#define ZIO_DEDUPDITTO_MIN 100 + enum zio_compress { ZIO_COMPRESS_INHERIT = 0, ZIO_COMPRESS_ON, @@ -94,12 +103,19 @@ enum zio_compress { ZIO_COMPRESS_GZIP_7, ZIO_COMPRESS_GZIP_8, ZIO_COMPRESS_GZIP_9, + ZIO_COMPRESS_ZLE, ZIO_COMPRESS_FUNCTIONS }; #define ZIO_COMPRESS_ON_VALUE ZIO_COMPRESS_LZJB #define ZIO_COMPRESS_DEFAULT ZIO_COMPRESS_OFF +#define BOOTFS_COMPRESS_VALID(compress) \ + ((compress) == ZIO_COMPRESS_LZJB || \ + ((compress) == ZIO_COMPRESS_ON && \ + ZIO_COMPRESS_ON_VALUE == ZIO_COMPRESS_LZJB) || \ + (compress) == ZIO_COMPRESS_OFF) + #define ZIO_FAILURE_MODE_WAIT 0 #define ZIO_FAILURE_MODE_CONTINUE 1 #define ZIO_FAILURE_MODE_PANIC 2 @@ -107,84 +123,89 @@ enum zio_compress { #define ZIO_PRIORITY_NOW (zio_priority_table[0]) #define ZIO_PRIORITY_SYNC_READ (zio_priority_table[1]) #define ZIO_PRIORITY_SYNC_WRITE (zio_priority_table[2]) -#define ZIO_PRIORITY_ASYNC_READ (zio_priority_table[3]) -#define ZIO_PRIORITY_ASYNC_WRITE (zio_priority_table[4]) -#define ZIO_PRIORITY_FREE (zio_priority_table[5]) -#define ZIO_PRIORITY_CACHE_FILL (zio_priority_table[6]) -#define ZIO_PRIORITY_LOG_WRITE (zio_priority_table[7]) -#define ZIO_PRIORITY_RESILVER (zio_priority_table[8]) -#define ZIO_PRIORITY_SCRUB (zio_priority_table[9]) -#define ZIO_PRIORITY_TABLE_SIZE 10 - -#define ZIO_FLAG_MUSTSUCCEED 0x000000 -#define ZIO_FLAG_CANFAIL 0x000001 -#define ZIO_FLAG_SPECULATIVE 0x000002 -#define ZIO_FLAG_CONFIG_WRITER 0x000004 -#define ZIO_FLAG_DONT_RETRY 0x000008 - -#define ZIO_FLAG_DONT_CACHE 0x000010 -#define ZIO_FLAG_DONT_QUEUE 0x000020 -#define ZIO_FLAG_DONT_AGGREGATE 0x000040 -#define ZIO_FLAG_DONT_PROPAGATE 0x000080 - -#define ZIO_FLAG_IO_BYPASS 0x000100 -#define ZIO_FLAG_IO_REPAIR 0x000200 -#define ZIO_FLAG_IO_RETRY 0x000400 -#define ZIO_FLAG_IO_REWRITE 0x000800 - -#define ZIO_FLAG_SELF_HEAL 0x001000 -#define ZIO_FLAG_RESILVER 0x002000 -#define ZIO_FLAG_SCRUB 0x004000 -#define ZIO_FLAG_SCRUB_THREAD 0x008000 - -#define ZIO_FLAG_PROBE 0x010000 -#define ZIO_FLAG_GANG_CHILD 0x020000 -#define ZIO_FLAG_RAW 0x040000 -#define ZIO_FLAG_GODFATHER 0x080000 - -#define ZIO_FLAG_TRYHARD 0x100000 -#define ZIO_FLAG_NODATA 0x200000 -#define ZIO_FLAG_OPTIONAL 0x400000 - -#define ZIO_FLAG_GANG_INHERIT \ - (ZIO_FLAG_CANFAIL | \ - ZIO_FLAG_SPECULATIVE | \ - ZIO_FLAG_CONFIG_WRITER | \ - ZIO_FLAG_DONT_RETRY | \ - ZIO_FLAG_DONT_CACHE | \ - ZIO_FLAG_DONT_AGGREGATE | \ - ZIO_FLAG_SELF_HEAL | \ - ZIO_FLAG_RESILVER | \ - ZIO_FLAG_SCRUB | \ - ZIO_FLAG_SCRUB_THREAD) - -#define ZIO_FLAG_VDEV_INHERIT \ - (ZIO_FLAG_GANG_INHERIT | \ - ZIO_FLAG_IO_REPAIR | \ - ZIO_FLAG_IO_RETRY | \ - ZIO_FLAG_PROBE | \ - ZIO_FLAG_TRYHARD | \ - ZIO_FLAG_NODATA | \ - ZIO_FLAG_OPTIONAL) - -#define ZIO_FLAG_AGG_INHERIT \ - (ZIO_FLAG_DONT_AGGREGATE | \ - ZIO_FLAG_IO_REPAIR | \ - ZIO_FLAG_SELF_HEAL | \ - ZIO_FLAG_RESILVER | \ - ZIO_FLAG_SCRUB | \ - ZIO_FLAG_SCRUB_THREAD) +#define ZIO_PRIORITY_LOG_WRITE (zio_priority_table[3]) +#define ZIO_PRIORITY_CACHE_FILL (zio_priority_table[4]) +#define ZIO_PRIORITY_AGG (zio_priority_table[5]) +#define ZIO_PRIORITY_FREE (zio_priority_table[6]) +#define ZIO_PRIORITY_ASYNC_WRITE (zio_priority_table[7]) +#define ZIO_PRIORITY_ASYNC_READ (zio_priority_table[8]) +#define ZIO_PRIORITY_RESILVER (zio_priority_table[9]) +#define ZIO_PRIORITY_SCRUB (zio_priority_table[10]) +#define ZIO_PRIORITY_DDT_PREFETCH (zio_priority_table[11]) +#define ZIO_PRIORITY_TABLE_SIZE 12 #define ZIO_PIPELINE_CONTINUE 0x100 #define ZIO_PIPELINE_STOP 0x101 +enum zio_flag { + /* + * Flags inherited by gang, ddt, and vdev children, + * and that must be equal for two zios to aggregate + */ + ZIO_FLAG_DONT_AGGREGATE = 1 << 0, + ZIO_FLAG_IO_REPAIR = 1 << 1, + ZIO_FLAG_SELF_HEAL = 1 << 2, + ZIO_FLAG_RESILVER = 1 << 3, + ZIO_FLAG_SCRUB = 1 << 4, + ZIO_FLAG_SCRUB_THREAD = 1 << 5, + +#define ZIO_FLAG_AGG_INHERIT (ZIO_FLAG_CANFAIL - 1) + + /* + * Flags inherited by ddt, gang, and vdev children. + */ + ZIO_FLAG_CANFAIL = 1 << 6, /* must be first for INHERIT */ + ZIO_FLAG_SPECULATIVE = 1 << 7, + ZIO_FLAG_CONFIG_WRITER = 1 << 8, + ZIO_FLAG_DONT_RETRY = 1 << 9, + ZIO_FLAG_DONT_CACHE = 1 << 10, + ZIO_FLAG_NODATA = 1 << 11, + ZIO_FLAG_INDUCE_DAMAGE = 1 << 12, + +#define ZIO_FLAG_DDT_INHERIT (ZIO_FLAG_IO_RETRY - 1) +#define ZIO_FLAG_GANG_INHERIT (ZIO_FLAG_IO_RETRY - 1) + + /* + * Flags inherited by vdev children. + */ + ZIO_FLAG_IO_RETRY = 1 << 13, /* must be first for INHERIT */ + ZIO_FLAG_PROBE = 1 << 14, + ZIO_FLAG_TRYHARD = 1 << 15, + ZIO_FLAG_OPTIONAL = 1 << 16, + +#define ZIO_FLAG_VDEV_INHERIT (ZIO_FLAG_DONT_QUEUE - 1) + + /* + * Flags not inherited by any children. + */ + ZIO_FLAG_DONT_QUEUE = 1 << 17, /* must be first for INHERIT */ + ZIO_FLAG_DONT_PROPAGATE = 1 << 18, + ZIO_FLAG_IO_BYPASS = 1 << 19, + ZIO_FLAG_IO_REWRITE = 1 << 20, + ZIO_FLAG_RAW = 1 << 21, + ZIO_FLAG_GANG_CHILD = 1 << 22, + ZIO_FLAG_DDT_CHILD = 1 << 23, + ZIO_FLAG_GODFATHER = 1 << 24 +}; + +#define ZIO_FLAG_MUSTSUCCEED 0 + +#define ZIO_DDT_CHILD_FLAGS(zio) \ + (((zio)->io_flags & ZIO_FLAG_DDT_INHERIT) | \ + ZIO_FLAG_DDT_CHILD | ZIO_FLAG_CANFAIL) + #define ZIO_GANG_CHILD_FLAGS(zio) \ (((zio)->io_flags & ZIO_FLAG_GANG_INHERIT) | \ ZIO_FLAG_GANG_CHILD | ZIO_FLAG_CANFAIL) +#define ZIO_VDEV_CHILD_FLAGS(zio) \ + (((zio)->io_flags & ZIO_FLAG_VDEV_INHERIT) | \ + ZIO_FLAG_CANFAIL) + enum zio_child { ZIO_CHILD_VDEV = 0, ZIO_CHILD_GANG, + ZIO_CHILD_DDT, ZIO_CHILD_LOGICAL, ZIO_CHILD_TYPES }; @@ -202,7 +223,6 @@ enum zio_wait_type { #define ECKSUM EBADE #define EFRAGS EBADR -typedef struct zio zio_t; typedef void zio_done_func_t(zio_t *zio); extern uint8_t zio_priority_table[ZIO_PRIORITY_TABLE_SIZE]; @@ -211,18 +231,15 @@ extern char *zio_type_name[ZIO_TYPES]; /* * A bookmark is a four-tuple <objset, object, level, blkid> that uniquely * identifies any block in the pool. By convention, the meta-objset (MOS) - * is objset 0, the meta-dnode is object 0, the root block (osphys_t) is - * level -1 of the meta-dnode, and intent log blocks (which are chained - * off the root block) have blkid == sequence number. In summary: + * is objset 0, and the meta-dnode is object 0. This covers all blocks + * except root blocks and ZIL blocks, which are defined as follows: * - * mos is objset 0 - * meta-dnode is object 0 - * root block is <objset, 0, -1, 0> - * intent log is <objset, 0, -1, ZIL sequence number> + * Root blocks (objset_phys_t) are object 0, level -1: <objset, 0, -1, 0>. + * ZIL blocks are bookmarked <objset, 0, -2, blkid == ZIL sequence number>. + * dmu_sync()ed ZIL data blocks are bookmarked <objset, object, -2, blkid>. * - * Note: this structure is called a bookmark because its first purpose was - * to remember where to resume a pool-wide traverse. The absolute ordering - * for block visitation during traversal is defined in compare_bookmark(). + * Note: this structure is called a bookmark because its original purpose + * was to remember where to resume a pool-wide traverse. * * Note: this structure is passed between userland and the kernel. * Therefore it must not change size or alignment between 32/64 bit @@ -235,14 +252,66 @@ typedef struct zbookmark { uint64_t zb_blkid; } zbookmark_t; +#define SET_BOOKMARK(zb, objset, object, level, blkid) \ +{ \ + (zb)->zb_objset = objset; \ + (zb)->zb_object = object; \ + (zb)->zb_level = level; \ + (zb)->zb_blkid = blkid; \ +} + +#define ZB_DESTROYED_OBJSET (-1ULL) + +#define ZB_ROOT_OBJECT (0ULL) +#define ZB_ROOT_LEVEL (-1LL) +#define ZB_ROOT_BLKID (0ULL) + +#define ZB_ZIL_OBJECT (0ULL) +#define ZB_ZIL_LEVEL (-2LL) + typedef struct zio_prop { enum zio_checksum zp_checksum; enum zio_compress zp_compress; dmu_object_type_t zp_type; uint8_t zp_level; - uint8_t zp_ndvas; + uint8_t zp_copies; + uint8_t zp_dedup; + uint8_t zp_dedup_verify; } zio_prop_t; +typedef struct zio_cksum_report zio_cksum_report_t; + +typedef void zio_cksum_finish_f(zio_cksum_report_t *rep, + const void *good_data); +typedef void zio_cksum_free_f(void *cbdata, size_t size); + +struct zio_bad_cksum; /* defined in zio_checksum.h */ + +struct zio_cksum_report { + struct zio_cksum_report *zcr_next; + nvlist_t *zcr_ereport; + nvlist_t *zcr_detector; + void *zcr_cbdata; + size_t zcr_cbinfo; /* passed to zcr_free() */ + uint64_t zcr_align; + uint64_t zcr_length; + zio_cksum_finish_f *zcr_finish; + zio_cksum_free_f *zcr_free; + + /* internal use only */ + struct zio_bad_cksum *zcr_ckinfo; /* information from failure */ +}; + +typedef void zio_vsd_cksum_report_f(zio_t *zio, zio_cksum_report_t *zcr, + void *arg); + +zio_vsd_cksum_report_f zio_vsd_default_cksum_report; + +typedef struct zio_vsd_ops { + zio_done_func_t *vsd_free; + zio_vsd_cksum_report_f *vsd_cksum_report; +} zio_vsd_ops_t; + typedef struct zio_gang_node { zio_gbh_phys_t *gn_gbh; struct zio_gang_node *gn_child[SPA_GBH_NBLKPTRS]; @@ -293,6 +362,7 @@ struct zio { uint64_t io_txg; spa_t *io_spa; blkptr_t *io_bp; + blkptr_t *io_bp_override; blkptr_t io_bp_copy; list_t io_parent_list; list_t io_child_list; @@ -304,16 +374,20 @@ struct zio { zio_done_func_t *io_ready; zio_done_func_t *io_done; void *io_private; + int64_t io_prev_space_delta; /* DMU private */ blkptr_t io_bp_orig; /* Data represented by this I/O */ void *io_data; + void *io_orig_data; uint64_t io_size; + uint64_t io_orig_size; /* Stuff for the vdev stack */ vdev_t *io_vd; void *io_vsd; - zio_done_func_t *io_vsd_free; + const zio_vsd_ops_t *io_vsd_ops; + uint64_t io_offset; uint64_t io_deadline; avl_node_t io_offset_node; @@ -321,15 +395,17 @@ struct zio { avl_tree_t *io_vdev_tree; /* Internal pipeline state */ - int io_flags; - zio_stage_t io_stage; - uint32_t io_pipeline; - int io_orig_flags; - zio_stage_t io_orig_stage; - uint32_t io_orig_pipeline; + enum zio_flag io_flags; + enum zio_stage io_stage; + enum zio_stage io_pipeline; + enum zio_flag io_orig_flags; + enum zio_stage io_orig_stage; + enum zio_stage io_orig_pipeline; int io_error; int io_child_error[ZIO_CHILD_TYPES]; uint64_t io_children[ZIO_CHILD_TYPES][ZIO_WAIT_TYPES]; + uint64_t io_child_count; + uint64_t io_parent_count; uint64_t *io_stall; zio_t *io_gang_leader; zio_gang_node_t *io_gang_tree; @@ -339,53 +415,58 @@ struct zio { kcondvar_t io_cv; /* FMA state */ + zio_cksum_report_t *io_cksum_report; uint64_t io_ena; }; extern zio_t *zio_null(zio_t *pio, spa_t *spa, vdev_t *vd, - zio_done_func_t *done, void *private, int flags); + zio_done_func_t *done, void *private, enum zio_flag flags); extern zio_t *zio_root(spa_t *spa, - zio_done_func_t *done, void *private, int flags); + zio_done_func_t *done, void *private, enum zio_flag flags); extern zio_t *zio_read(zio_t *pio, spa_t *spa, const blkptr_t *bp, void *data, uint64_t size, zio_done_func_t *done, void *private, - int priority, int flags, const zbookmark_t *zb); + int priority, enum zio_flag flags, const zbookmark_t *zb); extern zio_t *zio_write(zio_t *pio, spa_t *spa, uint64_t txg, blkptr_t *bp, - void *data, uint64_t size, zio_prop_t *zp, + void *data, uint64_t size, const zio_prop_t *zp, zio_done_func_t *ready, zio_done_func_t *done, void *private, - int priority, int flags, const zbookmark_t *zb); + int priority, enum zio_flag flags, const zbookmark_t *zb); extern zio_t *zio_rewrite(zio_t *pio, spa_t *spa, uint64_t txg, blkptr_t *bp, void *data, uint64_t size, zio_done_func_t *done, void *private, - int priority, int flags, zbookmark_t *zb); + int priority, enum zio_flag flags, zbookmark_t *zb); -extern void zio_skip_write(zio_t *zio); +extern void zio_write_override(zio_t *zio, blkptr_t *bp, int copies); -extern zio_t *zio_free(zio_t *pio, spa_t *spa, uint64_t txg, blkptr_t *bp, - zio_done_func_t *done, void *private, int flags); +extern void zio_free(spa_t *spa, uint64_t txg, const blkptr_t *bp); -extern zio_t *zio_claim(zio_t *pio, spa_t *spa, uint64_t txg, blkptr_t *bp, - zio_done_func_t *done, void *private, int flags); +extern zio_t *zio_claim(zio_t *pio, spa_t *spa, uint64_t txg, + const blkptr_t *bp, + zio_done_func_t *done, void *private, enum zio_flag flags); extern zio_t *zio_ioctl(zio_t *pio, spa_t *spa, vdev_t *vd, int cmd, - zio_done_func_t *done, void *private, int priority, int flags); + zio_done_func_t *done, void *private, int priority, enum zio_flag flags); extern zio_t *zio_read_phys(zio_t *pio, vdev_t *vd, uint64_t offset, uint64_t size, void *data, int checksum, - zio_done_func_t *done, void *private, int priority, int flags, + zio_done_func_t *done, void *private, int priority, enum zio_flag flags, boolean_t labels); extern zio_t *zio_write_phys(zio_t *pio, vdev_t *vd, uint64_t offset, uint64_t size, void *data, int checksum, - zio_done_func_t *done, void *private, int priority, int flags, + zio_done_func_t *done, void *private, int priority, enum zio_flag flags, boolean_t labels); -extern int zio_alloc_blk(spa_t *spa, uint64_t size, blkptr_t *new_bp, - blkptr_t *old_bp, uint64_t txg); -extern void zio_free_blk(spa_t *spa, blkptr_t *bp, uint64_t txg); +extern zio_t *zio_free_sync(zio_t *pio, spa_t *spa, uint64_t txg, + const blkptr_t *bp, enum zio_flag flags); + +extern int zio_alloc_zil(spa_t *spa, uint64_t txg, blkptr_t *new_bp, + blkptr_t *old_bp, uint64_t size, boolean_t use_slog); +extern void zio_free_zil(spa_t *spa, uint64_t txg, blkptr_t *bp); extern void zio_flush(zio_t *zio, vdev_t *vd); +extern void zio_shrink(zio_t *zio, uint64_t size); extern int zio_wait(zio_t *zio); extern void zio_nowait(zio_t *zio); @@ -406,11 +487,11 @@ extern void zio_resubmit_stage_async(void *); extern zio_t *zio_vdev_child_io(zio_t *zio, blkptr_t *bp, vdev_t *vd, uint64_t offset, void *data, uint64_t size, int type, int priority, - int flags, zio_done_func_t *done, void *private); + enum zio_flag flags, zio_done_func_t *done, void *private); extern zio_t *zio_vdev_delegated_io(vdev_t *vd, uint64_t offset, void *data, uint64_t size, int type, int priority, - int flags, zio_done_func_t *done, void *private); + enum zio_flag flags, zio_done_func_t *done, void *private); extern void zio_vdev_io_bypass(zio_t *zio); extern void zio_vdev_io_reissue(zio_t *zio); @@ -419,8 +500,12 @@ extern void zio_vdev_io_redone(zio_t *zio); extern void zio_checksum_verified(zio_t *zio); extern int zio_worst_error(int e1, int e2); -extern uint8_t zio_checksum_select(uint8_t child, uint8_t parent); -extern uint8_t zio_compress_select(uint8_t child, uint8_t parent); +extern enum zio_checksum zio_checksum_select(enum zio_checksum child, + enum zio_checksum parent); +extern enum zio_checksum zio_checksum_dedup_select(spa_t *spa, + enum zio_checksum child, enum zio_checksum parent); +extern enum zio_compress zio_compress_select(enum zio_compress child, + enum zio_compress parent); extern void zio_suspend(spa_t *spa, zio_t *zio); extern int zio_resume(spa_t *spa); @@ -442,9 +527,30 @@ extern int zio_inject_fault(char *name, int flags, int *id, extern int zio_inject_list_next(int *id, char *name, size_t buflen, struct zinject_record *record); extern int zio_clear_fault(int id); +extern void zio_handle_panic_injection(spa_t *spa, char *tag, uint64_t type); extern int zio_handle_fault_injection(zio_t *zio, int error); extern int zio_handle_device_injection(vdev_t *vd, zio_t *zio, int error); extern int zio_handle_label_injection(zio_t *zio, int error); +extern void zio_handle_ignored_writes(zio_t *zio); + +/* + * Checksum ereport functions + */ +extern void zfs_ereport_start_checksum(spa_t *spa, vdev_t *vd, struct zio *zio, + uint64_t offset, uint64_t length, void *arg, struct zio_bad_cksum *info); +extern void zfs_ereport_finish_checksum(zio_cksum_report_t *report, + const void *good_data, const void *bad_data, boolean_t drop_if_identical); + +extern void zfs_ereport_send_interim_checksum(zio_cksum_report_t *report); +extern void zfs_ereport_free_checksum(zio_cksum_report_t *report); + +/* If we have the good data in hand, this function can be used */ +extern void zfs_ereport_post_checksum(spa_t *spa, vdev_t *vd, + struct zio *zio, uint64_t offset, uint64_t length, + const void *good_data, const void *bad_data, struct zio_bad_cksum *info); + +/* Called from spa_sync(), but primarily an injection handler */ +extern void spa_handle_ignored_writes(spa_t *spa); #ifdef __cplusplus } |