sys/metaslab.h File Reference

#include <sys/spa.h>
#include <sys/space_map.h>
#include <sys/txg.h>
#include <sys/zio.h>
#include <sys/avl.h>

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Defines
#define	METASLAB_HINTBP_FAVOR   0x0
#define	METASLAB_HINTBP_AVOID   0x1
#define	METASLAB_GANG_HEADER   0x2
#define	METASLAB_GANG_CHILD   0x4
#define	METASLAB_GANG_AVOID   0x8
Functions
metaslab_t *	metaslab_init (metaslab_group_t *mg, space_map_obj_t *smo, uint64_t start, uint64_t size, uint64_t txg)
void	metaslab_fini (metaslab_t *msp)
void	metaslab_sync (metaslab_t *msp, uint64_t txg)
	Write a metaslab to disk in the context of the specified transaction group.
void	metaslab_sync_done (metaslab_t *msp, uint64_t txg)
	Called after a transaction group has completely synced to mark all of the metaslab's free space as usable.
void	metaslab_sync_reassess (metaslab_group_t *mg)
int	metaslab_alloc (spa_t *spa, metaslab_class_t *mc, uint64_t psize, blkptr_t *bp, int ncopies, uint64_t txg, blkptr_t *hintbp, int flags)
void	metaslab_free (spa_t *spa, const blkptr_t *bp, uint64_t txg, boolean_t now)
int	metaslab_claim (spa_t *spa, const blkptr_t *bp, uint64_t txg)
metaslab_class_t *	metaslab_class_create (spa_t *spa, space_map_ops_t *ops)
void	metaslab_class_destroy (metaslab_class_t *mc)
int	metaslab_class_validate (metaslab_class_t *mc)
void	metaslab_class_space_update (metaslab_class_t *mc, int64_t alloc_delta, int64_t defer_delta, int64_t space_delta, int64_t dspace_delta)
uint64_t	metaslab_class_get_alloc (metaslab_class_t *mc)
uint64_t	metaslab_class_get_space (metaslab_class_t *mc)
uint64_t	metaslab_class_get_dspace (metaslab_class_t *mc)
uint64_t	metaslab_class_get_deferred (metaslab_class_t *mc)
metaslab_group_t *	metaslab_group_create (metaslab_class_t *mc, vdev_t *vd)
void	metaslab_group_destroy (metaslab_group_t *mg)
void	metaslab_group_activate (metaslab_group_t *mg)
void	metaslab_group_passivate (metaslab_group_t *mg)
Variables
space_map_ops_t *	zfs_metaslab_ops

---

Define Documentation

#define METASLAB_GANG_AVOID   0x8

Definition at line 52 of file metaslab.h.

#define METASLAB_GANG_CHILD   0x4

Definition at line 51 of file metaslab.h.

#define METASLAB_GANG_HEADER   0x2

Definition at line 50 of file metaslab.h.

#define METASLAB_HINTBP_AVOID   0x1

Definition at line 49 of file metaslab.h.

#define METASLAB_HINTBP_FAVOR   0x0

Definition at line 48 of file metaslab.h.

---

Function Documentation

int metaslab_alloc	(	spa_t *	spa,
		metaslab_class_t *	mc,
		uint64_t	psize,
		blkptr_t *	bp,
		int	ncopies,
		uint64_t	txg,
		blkptr_t *	hintbp,
		int	flags
	)

Definition at line 1575 of file metaslab.c.

int metaslab_claim	(	spa_t *	spa,
		const blkptr_t *	bp,
		uint64_t	txg
	)

Definition at line 1636 of file metaslab.c.

metaslab_class_t* metaslab_class_create	(	spa_t *	spa,
		space_map_ops_t *	ops
	)

Definition at line 107 of file metaslab.c.

void metaslab_class_destroy

(

metaslab_class_t *

mc

)

Definition at line 121 of file metaslab.c.

uint64_t metaslab_class_get_alloc

(

metaslab_class_t *

mc

)

Definition at line 169 of file metaslab.c.

uint64_t metaslab_class_get_deferred

(

metaslab_class_t *

mc

)

Definition at line 175 of file metaslab.c.

uint64_t metaslab_class_get_dspace

(

metaslab_class_t *

mc

)

Definition at line 187 of file metaslab.c.

uint64_t metaslab_class_get_space

(

metaslab_class_t *

mc

)

Definition at line 181 of file metaslab.c.

void metaslab_class_space_update	(	metaslab_class_t *	mc,
		int64_t	alloc_delta,
		int64_t	defer_delta,
		int64_t	space_delta,
		int64_t	dspace_delta
	)

Definition at line 159 of file metaslab.c.

int metaslab_class_validate

(

metaslab_class_t *

mc

)

Definition at line 133 of file metaslab.c.

void metaslab_fini

(

metaslab_t *

msp

)

Definition at line 759 of file metaslab.c.

void metaslab_free	(	spa_t *	spa,
		const blkptr_t *	bp,
		uint64_t	txg,
		boolean_t	now
	)

Definition at line 1619 of file metaslab.c.

void metaslab_group_activate

(

metaslab_group_t *

mg

)

Definition at line 255 of file metaslab.c.

metaslab_group_t* metaslab_group_create	(	metaslab_class_t *	mc,
		vdev_t *	vd
	)

Definition at line 222 of file metaslab.c.

void metaslab_group_destroy

(

metaslab_group_t *

mg

)

Definition at line 238 of file metaslab.c.

void metaslab_group_passivate

(

metaslab_group_t *

mg

)

Definition at line 286 of file metaslab.c.

metaslab_t* metaslab_init	(	metaslab_group_t *	mg,
		space_map_obj_t *	smo,
		uint64_t	start,
		uint64_t	size,
		uint64_t	txg
	)

Definition at line 711 of file metaslab.c.

void metaslab_sync	(	metaslab_t *	msp,
		uint64_t	txg
	)

Write a metaslab to disk in the context of the specified transaction group.

Definition at line 935 of file metaslab.c.

void metaslab_sync_done	(	metaslab_t *	msp,
		uint64_t	txg
	)

Called after a transaction group has completely synced to mark all of the metaslab's free space as usable.

Definition at line 1034 of file metaslab.c.

void metaslab_sync_reassess

(

metaslab_group_t *

mg

)

Definition at line 1121 of file metaslab.c.

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Variable Documentation

space_map_ops_t* zfs_metaslab_ops

Definition at line 703 of file metaslab.c.