*/
/*
- * 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
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
*/
#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 {
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,
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
#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_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)
-
-#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
};
#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];
/*
* 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
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];
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;
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;
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;
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);
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);
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);
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
}
git://git.camperquake.de / zfs.git / blobdiff