dmu_objset.c File Reference

#include <sys/cred.h>
#include <sys/zfs_context.h>
#include <sys/dmu_objset.h>
#include <sys/dsl_dir.h>
#include <sys/dsl_dataset.h>
#include <sys/dsl_prop.h>
#include <sys/dsl_pool.h>
#include <sys/dsl_synctask.h>
#include <sys/dsl_deleg.h>
#include <sys/dnode.h>
#include <sys/dbuf.h>
#include <sys/zvol.h>
#include <sys/dmu_tx.h>
#include <sys/zap.h>
#include <sys/zil.h>
#include <sys/dmu_impl.h>
#include <sys/zfs_ioctl.h>
#include <sys/sa.h>
#include <sys/zfs_onexit.h>

Include dependency graph for dmu_objset.c:

Go to the source code of this file.

Data Structures
struct	oscarg
struct	snaparg
struct	findarg
Functions
void	dmu_objset_init (void)
void	dmu_objset_fini (void)
spa_t *	dmu_objset_spa (objset_t *os)
zilog_t *	dmu_objset_zil (objset_t *os)
dsl_pool_t *	dmu_objset_pool (objset_t *os)
dsl_dataset_t *	dmu_objset_ds (objset_t *os)
dmu_objset_type_t	dmu_objset_type (objset_t *os)
void	dmu_objset_name (objset_t *os, char *buf)
uint64_t	dmu_objset_id (objset_t *os)
uint64_t	dmu_objset_syncprop (objset_t *os)
uint64_t	dmu_objset_logbias (objset_t *os)
static void	checksum_changed_cb (void *arg, uint64_t newval)
static void	compression_changed_cb (void *arg, uint64_t newval)
static void	copies_changed_cb (void *arg, uint64_t newval)
static void	dedup_changed_cb (void *arg, uint64_t newval)
static void	primary_cache_changed_cb (void *arg, uint64_t newval)
static void	secondary_cache_changed_cb (void *arg, uint64_t newval)
static void	sync_changed_cb (void *arg, uint64_t newval)
static void	logbias_changed_cb (void *arg, uint64_t newval)
void	dmu_objset_byteswap (void *buf, size_t size)
int	dmu_objset_open_impl (spa_t *spa, dsl_dataset_t *ds, blkptr_t *bp, objset_t **osp)
int	dmu_objset_from_ds (dsl_dataset_t *ds, objset_t **osp)
int	dmu_objset_hold (const char *name, void *tag, objset_t **osp)
int	dmu_objset_own (const char *name, dmu_objset_type_t type, boolean_t readonly, void *tag, objset_t **osp)
void	dmu_objset_rele (objset_t *os, void *tag)
void	dmu_objset_disown (objset_t *os, void *tag)
int	dmu_objset_evict_dbufs (objset_t *os)
void	dmu_objset_evict (objset_t *os)
timestruc_t	dmu_objset_snap_cmtime (objset_t *os)
objset_t *	dmu_objset_create_impl (spa_t *spa, dsl_dataset_t *ds, blkptr_t *bp, dmu_objset_type_t type, dmu_tx_t *tx)
static int	dmu_objset_create_check (void *arg1, void *arg2, dmu_tx_t *tx)
static void	dmu_objset_create_sync (void *arg1, void *arg2, dmu_tx_t *tx)
int	dmu_objset_create (const char *name, dmu_objset_type_t type, uint64_t flags, void(*func)(objset_t *os, void *arg, cred_t *cr, dmu_tx_t *tx), void *arg)
int	dmu_objset_clone (const char *name, dsl_dataset_t *clone_origin, uint64_t flags)
int	dmu_objset_destroy (const char *name, boolean_t defer)
static int	snapshot_check (void *arg1, void *arg2, dmu_tx_t *tx)
static void	snapshot_sync (void *arg1, void *arg2, dmu_tx_t *tx)
static int	dmu_objset_snapshot_one (const char *name, void *arg)
int	dmu_objset_snapshot (char *fsname, char *snapname, char *tag, nvlist_t *props, boolean_t recursive, boolean_t temporary, int cleanup_fd)
static void	dmu_objset_sync_dnodes (list_t *list, list_t *newlist, dmu_tx_t *tx)
static void	dmu_objset_write_ready (zio_t *zio, arc_buf_t *abuf, void *arg)
static void	dmu_objset_write_done (zio_t *zio, arc_buf_t *abuf, void *arg)
void	dmu_objset_sync (objset_t *os, zio_t *pio, dmu_tx_t *tx)
boolean_t	dmu_objset_is_dirty (objset_t *os, uint64_t txg)
void	dmu_objset_register_type (dmu_objset_type_t ost, objset_used_cb_t *cb)
boolean_t	dmu_objset_userused_enabled (objset_t *os)
static void	do_userquota_update (objset_t *os, uint64_t used, uint64_t flags, uint64_t user, uint64_t group, boolean_t subtract, dmu_tx_t *tx)
void	dmu_objset_do_userquota_updates (objset_t *os, dmu_tx_t *tx)
static void *	dmu_objset_userquota_find_data (dmu_buf_impl_t *db, dmu_tx_t *tx)
	Returns a pointer to data to find uid/gid from.
void	dmu_objset_userquota_get_ids (dnode_t *dn, boolean_t before, dmu_tx_t *tx)
boolean_t	dmu_objset_userspace_present (objset_t *os)
int	dmu_objset_userspace_upgrade (objset_t *os)
void	dmu_objset_space (objset_t *os, uint64_t *refdbytesp, uint64_t *availbytesp, uint64_t *usedobjsp, uint64_t *availobjsp)
	Get the space usage statistics for statvfs().
uint64_t	dmu_objset_fsid_guid (objset_t *os)
	The fsid_guid is a 56-bit ID that can change to avoid collisions.
void	dmu_objset_fast_stat (objset_t *os, dmu_objset_stats_t *stat)
	Get stats on a dataset.
void	dmu_objset_stats (objset_t *os, nvlist_t *nv)
int	dmu_objset_is_snapshot (objset_t *os)
int	dmu_snapshot_realname (objset_t *os, char *name, char *real, int maxlen, boolean_t *conflict)
int	dmu_snapshot_list_next (objset_t *os, int namelen, char *name, uint64_t *idp, uint64_t *offp, boolean_t *case_conflict)
int	dmu_dir_list_next (objset_t *os, int namelen, char *name, uint64_t *idp, uint64_t *offp)
static int	findfunc (spa_t *spa, uint64_t dsobj, const char *dsname, void *arg)
int	dmu_objset_find (const char *name, int func(const char *, void *), void *arg, int flags)
	Find all objsets under name, and for each, call 'func(child_name, arg)'.
int	dmu_objset_find_spa (spa_t *spa, const char *name, int func(spa_t *, uint64_t, const char *, void *), void *arg, int flags)
	Find all objsets under name, call func on each.
int	dmu_objset_prefetch (const char *name, void *arg)
void	dmu_objset_set_user (objset_t *os, void *user_ptr)
void *	dmu_objset_get_user (objset_t *os)
Variables
krwlock_t	os_lock
	Needed to close a window in dnode_move() that allows the objset to be freed before it can be safely accessed.
static objset_used_cb_t *	used_cbs [DMU_OST_NUMTYPES]

---

Function Documentation

static void checksum_changed_cb	(	void *	arg,
		uint64_t	newval
	)		[static]

Definition at line 127 of file dmu_objset.c.

static void compression_changed_cb	(	void *	arg,
		uint64_t	newval
	)		[static]

Definition at line 140 of file dmu_objset.c.

static void copies_changed_cb	(	void *	arg,
		uint64_t	newval
	)		[static]

Definition at line 153 of file dmu_objset.c.

static void dedup_changed_cb	(	void *	arg,
		uint64_t	newval
	)		[static]

Definition at line 167 of file dmu_objset.c.

int dmu_dir_list_next	(	objset_t *	os,
		int	namelen,
		char *	name,
		uint64_t *	idp,
		uint64_t *	offp
	)

Definition at line 1582 of file dmu_objset.c.

void dmu_objset_byteswap	(	void *	buf,
		size_t	size
	)

Definition at line 241 of file dmu_objset.c.

int dmu_objset_clone	(	const char *	name,
		dsl_dataset_t *	clone_origin,
		uint64_t	flags
	)

Definition at line 760 of file dmu_objset.c.

int dmu_objset_create	(	const char *	name,
		dmu_objset_type_t	type,
		uint64_t	flags,
		void(*)(objset_t *os, void *arg, cred_t *cr, dmu_tx_t *tx)	func,
		void *	arg
	)

Definition at line 729 of file dmu_objset.c.

static int dmu_objset_create_check	(	void *	arg1,
		void *	arg2,
		dmu_tx_t *	tx
	)		[static]

Definition at line 669 of file dmu_objset.c.

objset_t* dmu_objset_create_impl	(	spa_t *	spa,
		dsl_dataset_t *	ds,
		blkptr_t *	bp,
		dmu_objset_type_t	type,
		dmu_tx_t *	tx
	)

Definition at line 599 of file dmu_objset.c.

static void dmu_objset_create_sync	(	void *	arg1,
		void *	arg2,
		dmu_tx_t *	tx
	)		[static]

Definition at line 696 of file dmu_objset.c.

int dmu_objset_destroy	(	const char *	name,
		boolean_t	defer
	)

Definition at line 788 of file dmu_objset.c.

void dmu_objset_disown	(	objset_t *	os,
		void *	tag
	)

Definition at line 482 of file dmu_objset.c.

void dmu_objset_do_userquota_updates	(	objset_t *	os,
		dmu_tx_t *	tx
	)

Definition at line 1222 of file dmu_objset.c.

dsl_dataset_t* dmu_objset_ds

(

objset_t *

os

)

[read]

Definition at line 89 of file dmu_objset.c.

void dmu_objset_evict

(

objset_t *

os

)

Definition at line 528 of file dmu_objset.c.

int dmu_objset_evict_dbufs

(

objset_t *

os

)

Definition at line 488 of file dmu_objset.c.

void dmu_objset_fast_stat	(	objset_t *	os,
		dmu_objset_stats_t *	stat
	)

Get stats on a dataset.

Definition at line 1498 of file dmu_objset.c.

int dmu_objset_find	(	const char *	name,
		int	funcconst char *, void *,
		void *	arg,
		int	flags
	)

Find all objsets under name, and for each, call 'func(child_name, arg)'.

Todo:

Perhaps change all callers to use dmu_objset_find_spa()?

Definition at line 1637 of file dmu_objset.c.

int dmu_objset_find_spa	(	spa_t *	spa,
		const char *	name,
		int	funcspa_t *, uint64_t, const char *, void *,
		void *	arg,
		int	flags
	)

Find all objsets under name, call func on each.

Definition at line 1650 of file dmu_objset.c.

void dmu_objset_fini

(

void

)

Definition at line 60 of file dmu_objset.c.

int dmu_objset_from_ds	(	dsl_dataset_t *	ds,
		objset_t **	osp
	)

Definition at line 418 of file dmu_objset.c.

uint64_t dmu_objset_fsid_guid

(

objset_t *

os

)

The fsid_guid is a 56-bit ID that can change to avoid collisions.

(Contrast with the ds_guid which is a 64-bit ID that will never change, so there is a small probability that it will collide.)

Definition at line 1492 of file dmu_objset.c.

void* dmu_objset_get_user

(

objset_t *

os

)

Definition at line 1789 of file dmu_objset.c.

int dmu_objset_hold	(	const char *	name,
		void *	tag,
		objset_t **	osp
	)

Definition at line 434 of file dmu_objset.c.

uint64_t dmu_objset_id

(

objset_t *

os

)

Definition at line 107 of file dmu_objset.c.

void dmu_objset_init

(

void

)

Definition at line 54 of file dmu_objset.c.

boolean_t dmu_objset_is_dirty	(	objset_t *	os,
		uint64_t	txg
	)

Definition at line 1184 of file dmu_objset.c.

int dmu_objset_is_snapshot

(

objset_t *

os

)

Definition at line 1521 of file dmu_objset.c.

uint64_t dmu_objset_logbias

(

objset_t *

os

)

Definition at line 121 of file dmu_objset.c.

void dmu_objset_name	(	objset_t *	os,
		char *	buf
	)

Definition at line 101 of file dmu_objset.c.

int dmu_objset_open_impl	(	spa_t *	spa,
		dsl_dataset_t *	ds,
		blkptr_t *	bp,
		objset_t **	osp
	)

Definition at line 257 of file dmu_objset.c.

int dmu_objset_own	(	const char *	name,
		dmu_objset_type_t	type,
		boolean_t	readonly,
		void *	tag,
		objset_t **	osp
	)

Definition at line 452 of file dmu_objset.c.

dsl_pool_t* dmu_objset_pool

(

objset_t *

os

)

[read]

Definition at line 78 of file dmu_objset.c.

int dmu_objset_prefetch	(	const char *	name,
		void *	arg
	)

Definition at line 1752 of file dmu_objset.c.

void dmu_objset_register_type	(	dmu_objset_type_t	ost,
		objset_used_cb_t *	cb
	)

Definition at line 1193 of file dmu_objset.c.

void dmu_objset_rele	(	objset_t *	os,
		void *	tag
	)

Definition at line 476 of file dmu_objset.c.

void dmu_objset_set_user	(	objset_t *	os,
		void *	user_ptr
	)

Definition at line 1782 of file dmu_objset.c.

timestruc_t dmu_objset_snap_cmtime

(

objset_t *

os

)

Definition at line 592 of file dmu_objset.c.

int dmu_objset_snapshot	(	char *	fsname,
		char *	snapname,
		char *	tag,
		nvlist_t *	props,
		boolean_t	recursive,
		boolean_t	temporary,
		int	cleanup_fd
	)

Definition at line 944 of file dmu_objset.c.

static int dmu_objset_snapshot_one	(	const char *	name,
		void *	arg
	)		[static]

Definition at line 888 of file dmu_objset.c.

spa_t* dmu_objset_spa

(

objset_t *

os

)

[read]

Definition at line 66 of file dmu_objset.c.

void dmu_objset_space	(	objset_t *	os,
		uint64_t *	refdbytesp,
		uint64_t *	availbytesp,
		uint64_t *	usedobjsp,
		uint64_t *	availobjsp
	)

Get the space usage statistics for statvfs().

refdbytes is the amount of space "referenced" by this objset. availbytes is the amount of space available to this objset, taking into account quotas & reservations, assuming that no other objsets use the space first. These values correspond to the 'referenced' and 'available' properties, described in the zfs(1m) manpage.

usedobjs and availobjs are the number of objects currently allocated, and available.

Definition at line 1484 of file dmu_objset.c.

void dmu_objset_stats	(	objset_t *	os,
		nvlist_t *	nv
	)

Definition at line 1506 of file dmu_objset.c.

void dmu_objset_sync	(	objset_t *	os,
		zio_t *	pio,
		dmu_tx_t *	tx
	)

Definition at line 1096 of file dmu_objset.c.

static void dmu_objset_sync_dnodes	(	list_t *	list,
		list_t *	newlist,
		dmu_tx_t *	tx
	)		[static]

Definition at line 1026 of file dmu_objset.c.

uint64_t dmu_objset_syncprop

(

objset_t *

os

)

Definition at line 115 of file dmu_objset.c.

dmu_objset_type_t dmu_objset_type

(

objset_t *

os

)

Definition at line 95 of file dmu_objset.c.

static void* dmu_objset_userquota_find_data	(	dmu_buf_impl_t *	db,
		dmu_tx_t *	tx
	)		[static]

Returns a pointer to data to find uid/gid from.

If a dirty record for transaction group that is syncing can't be found then NULL is returned. In the NULL case it is assumed the uid/gid aren't changing.

Definition at line 1294 of file dmu_objset.c.

void dmu_objset_userquota_get_ids	(	dnode_t *	dn,
		boolean_t	before,
		dmu_tx_t *	tx
	)

Definition at line 1327 of file dmu_objset.c.

boolean_t dmu_objset_userspace_present

(

objset_t *

os

)

Definition at line 1428 of file dmu_objset.c.

int dmu_objset_userspace_upgrade

(

objset_t *

os

)

Definition at line 1435 of file dmu_objset.c.

boolean_t dmu_objset_userused_enabled

(

objset_t *

os

)

Definition at line 1199 of file dmu_objset.c.

static void dmu_objset_write_done	(	zio_t *	zio,
		arc_buf_t *	abuf,
		void *	arg
	)		[static]

Definition at line 1077 of file dmu_objset.c.

static void dmu_objset_write_ready	(	zio_t *	zio,
		arc_buf_t *	abuf,
		void *	arg
	)		[static]

Definition at line 1054 of file dmu_objset.c.

zilog_t* dmu_objset_zil

(

objset_t *

os

)

[read]

Definition at line 72 of file dmu_objset.c.

int dmu_snapshot_list_next	(	objset_t *	os,
		int	namelen,
		char *	name,
		uint64_t *	idp,
		uint64_t *	offp,
		boolean_t *	case_conflict
	)

Definition at line 1545 of file dmu_objset.c.

int dmu_snapshot_realname	(	objset_t *	os,
		char *	name,
		char *	real,
		int	maxlen,
		boolean_t *	conflict
	)

Definition at line 1530 of file dmu_objset.c.

static void do_userquota_update	(	objset_t *	os,
		uint64_t	used,
		uint64_t	flags,
		uint64_t	user,
		uint64_t	group,
		boolean_t	subtract,
		dmu_tx_t *	tx
	)		[static]

Definition at line 1207 of file dmu_objset.c.

static int findfunc	(	spa_t *	spa,
		uint64_t	dsobj,
		const char *	dsname,
		void *	arg
	)		[static]

Definition at line 1625 of file dmu_objset.c.

static void logbias_changed_cb	(	void *	arg,
		uint64_t	newval
	)		[static]

Definition at line 229 of file dmu_objset.c.

static void primary_cache_changed_cb	(	void *	arg,
		uint64_t	newval
	)		[static]

Definition at line 185 of file dmu_objset.c.

static void secondary_cache_changed_cb	(	void *	arg,
		uint64_t	newval
	)		[static]

Definition at line 199 of file dmu_objset.c.

static int snapshot_check	(	void *	arg1,
		void *	arg2,
		dmu_tx_t *	tx
	)		[static]

Definition at line 816 of file dmu_objset.c.

static void snapshot_sync	(	void *	arg1,
		void *	arg2,
		dmu_tx_t *	tx
	)		[static]

Definition at line 858 of file dmu_objset.c.

static void sync_changed_cb	(	void *	arg,
		uint64_t	newval
	)		[static]

Definition at line 213 of file dmu_objset.c.

---

Variable Documentation

krwlock_t os_lock

Needed to close a window in dnode_move() that allows the objset to be freed before it can be safely accessed.

Definition at line 51 of file dmu_objset.c.

objset_used_cb_t* used_cbs[DMU_OST_NUMTYPES] [static]

Definition at line 1190 of file dmu_objset.c.