dmu_traverse.c File Reference

#include <sys/zfs_context.h>
#include <sys/dmu_objset.h>
#include <sys/dmu_traverse.h>
#include <sys/dsl_dataset.h>
#include <sys/dsl_dir.h>
#include <sys/dsl_pool.h>
#include <sys/dnode.h>
#include <sys/spa.h>
#include <sys/zio.h>
#include <sys/dmu_impl.h>
#include <sys/sa.h>
#include <sys/sa_impl.h>
#include <sys/callb.h>

Include dependency graph for dmu_traverse.c:

Go to the source code of this file.

Data Structures
struct	prefetch_data
struct	traverse_data
Typedefs
typedef struct prefetch_data	prefetch_data_t
typedef struct traverse_data	traverse_data_t
typedef enum resume_skip	resume_skip_t
Enumerations
enum	resume_skip { RESUME_SKIP_ALL, RESUME_SKIP_NONE, RESUME_SKIP_CHILDREN }
Functions
static int	traverse_dnode (traverse_data_t *td, const dnode_phys_t *dnp, arc_buf_t *buf, uint64_t objset, uint64_t object)
static void	prefetch_dnode_metadata (traverse_data_t *td, const dnode_phys_t *, arc_buf_t *buf, uint64_t objset, uint64_t object)
static int	traverse_zil_block (zilog_t *zilog, blkptr_t *bp, void *arg, uint64_t claim_txg)
static int	traverse_zil_record (zilog_t *zilog, lr_t *lrc, void *arg, uint64_t claim_txg)
static void	traverse_zil (traverse_data_t *td, zil_header_t *zh)
static resume_skip_t	resume_skip_check (traverse_data_t *td, const dnode_phys_t *dnp, const zbookmark_t *zb)
static void	traverse_pause (traverse_data_t *td, const zbookmark_t *zb)
static void	traverse_prefetch_metadata (traverse_data_t *td, arc_buf_t *pbuf, const blkptr_t *bp, const zbookmark_t *zb)
static int	traverse_visitbp (traverse_data_t *td, const dnode_phys_t *dnp, arc_buf_t *pbuf, const blkptr_t *bp, const zbookmark_t *zb)
static int	traverse_prefetcher (spa_t *spa, zilog_t *zilog, const blkptr_t *bp, arc_buf_t *pbuf, const zbookmark_t *zb, const dnode_phys_t *dnp, void *arg)
static void	traverse_prefetch_thread (void *arg)
static int	traverse_impl (spa_t *spa, dsl_dataset_t *ds, uint64_t objset, blkptr_t *rootbp, uint64_t txg_start, zbookmark_t *resume, int flags, blkptr_cb_t func, void *arg)
	NB: dataset must not be changing on-disk (eg, is a snapshot or we are in syncing context).
int	traverse_dataset (dsl_dataset_t *ds, uint64_t txg_start, int flags, blkptr_cb_t func, void *arg)
	NB: dataset must not be changing on-disk (eg, is a snapshot or we are in syncing context).
int	traverse_dataset_destroyed (spa_t *spa, blkptr_t *blkptr, uint64_t txg_start, zbookmark_t *resume, int flags, blkptr_cb_t func, void *arg)
int	traverse_pool (spa_t *spa, uint64_t txg_start, int flags, blkptr_cb_t func, void *arg)
	NB: pool must not be changing on-disk (eg, from zdb or sync context).
Variables
int	zfs_pd_blks_max = 100

---

Typedef Documentation

typedef struct prefetch_data prefetch_data_t

typedef enum resume_skip resume_skip_t

typedef struct traverse_data traverse_data_t

---

Enumeration Type Documentation

enum resume_skip

Enumerator:

RESUME_SKIP_ALL
RESUME_SKIP_NONE
RESUME_SKIP_CHILDREN

Definition at line 135 of file dmu_traverse.c.

---

Function Documentation

static void prefetch_dnode_metadata	(	traverse_data_t *	td,
		const dnode_phys_t *	dnp,
		arc_buf_t *	buf,
		uint64_t	objset,
		uint64_t	object
	)		[static]

Definition at line 389 of file dmu_traverse.c.

static resume_skip_t resume_skip_check	(	traverse_data_t *	td,
		const dnode_phys_t *	dnp,
		const zbookmark_t *	zb
	)		[static]

Return values:

RESUME_SKIP_ALL	td indicates that we are resuming a traversal and the block indicated by zb does not need to be visited at all.
RESUME_SKIP_CHILDREN	We are resuming a post traversal and we reach the resume point. This indicates that this block should be visited but not its children (since they must have been visited in a previous traversal).
RESUME_SKIP_NONE	No skipping required.

Definition at line 153 of file dmu_traverse.c.

int traverse_dataset	(	dsl_dataset_t *	ds,
		uint64_t	txg_start,
		int	flags,
		blkptr_cb_t	func,
		void *	arg
	)

NB: dataset must not be changing on-disk (eg, is a snapshot or we are in syncing context).

Definition at line 566 of file dmu_traverse.c.

int traverse_dataset_destroyed	(	spa_t *	spa,
		blkptr_t *	blkptr,
		uint64_t	txg_start,
		zbookmark_t *	resume,
		int	flags,
		blkptr_cb_t	func,
		void *	arg
	)

Definition at line 574 of file dmu_traverse.c.

static int traverse_dnode	(	traverse_data_t *	td,
		const dnode_phys_t *	dnp,
		arc_buf_t *	buf,
		uint64_t	objset,
		uint64_t	object
	)		[static]

Definition at line 407 of file dmu_traverse.c.

static int traverse_impl	(	spa_t *	spa,
		dsl_dataset_t *	ds,
		uint64_t	objset,
		blkptr_t *	rootbp,
		uint64_t	txg_start,
		zbookmark_t *	resume,
		int	flags,
		blkptr_cb_t	func,
		void *	arg
	)		[static]

NB: dataset must not be changing on-disk (eg, is a snapshot or we are in syncing context).

Definition at line 495 of file dmu_traverse.c.

static void traverse_pause	(	traverse_data_t *	td,
		const zbookmark_t *	zb
	)		[static]

Definition at line 179 of file dmu_traverse.c.

int traverse_pool	(	spa_t *	spa,
		uint64_t	txg_start,
		int	flags,
		blkptr_cb_t	func,
		void *	arg
	)

NB: pool must not be changing on-disk (eg, from zdb or sync context).

Definition at line 586 of file dmu_traverse.c.

static void traverse_prefetch_metadata	(	traverse_data_t *	td,
		arc_buf_t *	pbuf,
		const blkptr_t *	bp,
		const zbookmark_t *	zb
	)		[static]

Definition at line 187 of file dmu_traverse.c.

static void traverse_prefetch_thread

(

void *

arg

)

[static]

Definition at line 470 of file dmu_traverse.c.

static int traverse_prefetcher	(	spa_t *	spa,
		zilog_t *	zilog,
		const blkptr_t *	bp,
		arc_buf_t *	pbuf,
		const zbookmark_t *	zb,
		const dnode_phys_t *	dnp,
		void *	arg
	)		[static]

Definition at line 438 of file dmu_traverse.c.

static int traverse_visitbp	(	traverse_data_t *	td,
		const dnode_phys_t *	dnp,
		arc_buf_t *	pbuf,
		const blkptr_t *	bp,
		const zbookmark_t *	zb
	)		[static]

Definition at line 212 of file dmu_traverse.c.

static void traverse_zil	(	traverse_data_t *	td,
		zil_header_t *	zh
	)		[static]

Definition at line 115 of file dmu_traverse.c.

static int traverse_zil_block	(	zilog_t *	zilog,
		blkptr_t *	bp,
		void *	arg,
		uint64_t	claim_txg
	)		[static]

Definition at line 70 of file dmu_traverse.c.

static int traverse_zil_record	(	zilog_t *	zilog,
		lr_t *	lrc,
		void *	arg,
		uint64_t	claim_txg
	)		[static]

Definition at line 90 of file dmu_traverse.c.

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Variable Documentation

int zfs_pd_blks_max = 100

Definition at line 40 of file dmu_traverse.c.