#include <sys/dmu_objset.h>
#include <sys/dsl_dataset.h>
#include <sys/dsl_dir.h>
#include <sys/dsl_prop.h>
#include <sys/dsl_synctask.h>
#include <sys/dmu_traverse.h>
#include <sys/dmu_impl.h>
#include <sys/dmu_tx.h>
#include <sys/arc.h>
#include <sys/zio.h>
#include <sys/zap.h>
#include <sys/zfeature.h>
#include <sys/unique.h>
#include <sys/zfs_context.h>
#include <sys/zfs_ioctl.h>
#include <sys/spa.h>
#include <sys/zfs_znode.h>
#include <sys/zfs_onexit.h>
#include <sys/zvol.h>
#include <sys/dsl_scan.h>
#include <sys/dsl_deadlist.h>

Include dependency graph for dsl_dataset.c:

Data Structures
struct	killarg
struct	refsarg
struct	process_old_arg
struct	renamesnaparg
struct	promotenode
struct	promotearg
struct	cloneswaparg
struct	zfs_hold_cleanup_arg
struct	dsl_ds_releasearg
Defines
#define	SWITCH64(x, y)
#define	DS_REF_MAX (1ULL << 62)
#define	DSL_DEADLIST_BLOCKSIZE SPA_MAXBLOCKSIZE
#define	DSL_DATASET_IS_DESTROYED(ds) ((ds)->ds_owner == dsl_reaper)
Typedefs
typedef struct zfs_hold_cleanup_arg	zfs_hold_cleanup_arg_t
Functions
static int64_t	parent_delta (dsl_dataset_t *ds, int64_t delta)
	Figure out how much of this delta should be propogated to the dsl_dir layer.
void	dsl_dataset_block_born (dsl_dataset_t ds, const blkptr_t bp, dmu_tx_t *tx)
int	dsl_dataset_block_kill (dsl_dataset_t ds, const blkptr_t bp, dmu_tx_t *tx, boolean_t async)
uint64_t	dsl_dataset_prev_snap_txg (dsl_dataset_t *ds)
boolean_t	dsl_dataset_block_freeable (dsl_dataset_t ds, const blkptr_t bp, uint64_t blk_birth)
static void	dsl_dataset_evict (dmu_buf_t db, void dsv)
static int	dsl_dataset_get_snapname (dsl_dataset_t *ds)
static int	dsl_dataset_snap_lookup (dsl_dataset_t ds, const char name, uint64_t *value)
static int	dsl_dataset_snap_remove (dsl_dataset_t ds, char name, dmu_tx_t *tx)
static int	dsl_dataset_get_ref (dsl_pool_t dp, uint64_t dsobj, void tag, dsl_dataset_t **dsp)
static int	dsl_dataset_hold_ref (dsl_dataset_t ds, void tag)
int	dsl_dataset_hold_obj (dsl_pool_t dp, uint64_t dsobj, void tag, dsl_dataset_t **dsp)
int	dsl_dataset_own_obj (dsl_pool_t dp, uint64_t dsobj, boolean_t inconsistentok, void tag, dsl_dataset_t **dsp)
int	dsl_dataset_hold (const char name, void tag, dsl_dataset_t **dsp)
int	dsl_dataset_own (const char name, boolean_t inconsistentok, void tag, dsl_dataset_t **dsp)
void	dsl_dataset_name (dsl_dataset_t ds, char name)
static int	dsl_dataset_namelen (dsl_dataset_t *ds)
void	dsl_dataset_drop_ref (dsl_dataset_t ds, void tag)
void	dsl_dataset_rele (dsl_dataset_t ds, void tag)
void	dsl_dataset_disown (dsl_dataset_t ds, void tag)
boolean_t	dsl_dataset_tryown (dsl_dataset_t ds, boolean_t inconsistentok, void tag)
void	dsl_dataset_make_exclusive (dsl_dataset_t ds, void owner)
uint64_t	dsl_dataset_create_sync_dd (dsl_dir_t dd, dsl_dataset_t origin, uint64_t flags, dmu_tx_t *tx)
uint64_t	dsl_dataset_create_sync (dsl_dir_t pdd, const char lastname, dsl_dataset_t origin, uint64_t flags, cred_t cr, dmu_tx_t *tx)
int	dmu_snapshots_destroy_nvl (nvlist_t snaps, boolean_t defer, char failed)
	Destroy 'snapname' in all descendants of 'fsname'.
static boolean_t	dsl_dataset_might_destroy_origin (dsl_dataset_t *ds)
static int	dsl_dataset_origin_rm_prep (struct dsl_ds_destroyarg dsda, void tag)
	If we're removing a clone, and these three conditions are true: the clone's origin has no other children the clone's origin has no user references the clone's origin has been marked for deferred destruction.
int	dsl_dataset_destroy (dsl_dataset_t ds, void tag, boolean_t defer)
	ds must be opened as OWNER.
blkptr_t *	dsl_dataset_get_blkptr (dsl_dataset_t *ds)
void	dsl_dataset_set_blkptr (dsl_dataset_t ds, blkptr_t bp, dmu_tx_t *tx)
spa_t *	dsl_dataset_get_spa (dsl_dataset_t *ds)
void	dsl_dataset_dirty (dsl_dataset_t ds, dmu_tx_t tx)
boolean_t	dsl_dataset_is_dirty (dsl_dataset_t *ds)
static void	dsl_dataset_recalc_head_uniq (dsl_dataset_t *ds)
	The unique space in the head dataset can be calculated by subtracting the space used in the most recent snapshot, that is still being used in this file system, from the space currently in use.
static int	kill_blkptr (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 int	dsl_dataset_destroy_begin_check (void arg1, void arg2, dmu_tx_t *tx)
static void	dsl_dataset_destroy_begin_sync (void arg1, void arg2, dmu_tx_t *tx)
static int	dsl_dataset_origin_check (struct dsl_ds_destroyarg dsda, void tag, dmu_tx_t *tx)
int	dsl_dataset_destroy_check (void arg1, void arg2, dmu_tx_t *tx)
	If you add new checks here, you may need to add additional checks to the "temporary" case in snapshot_check() in dmu_objset.c.
static void	dsl_dataset_refs_gone (dmu_buf_t db, void argv)
static void	dsl_dataset_drain_refs (dsl_dataset_t ds, void tag)
static void	remove_from_next_clones (dsl_dataset_t ds, uint64_t obj, dmu_tx_t tx)
static void	dsl_dataset_remove_clones_key (dsl_dataset_t ds, uint64_t mintxg, dmu_tx_t tx)
static int	process_old_cb (void arg, const blkptr_t bp, dmu_tx_t *tx)
static void	process_old_deadlist (dsl_dataset_t ds, dsl_dataset_t ds_prev, dsl_dataset_t ds_next, boolean_t after_branch_point, dmu_tx_t tx)
static int	old_synchronous_dataset_destroy (dsl_dataset_t ds, dmu_tx_t tx)
void	dsl_dataset_destroy_sync (void arg1, void tag, dmu_tx_t *tx)
static int	dsl_dataset_snapshot_reserve_space (dsl_dataset_t ds, dmu_tx_t tx)
int	dsl_dataset_snapshot_check (void arg1, void arg2, dmu_tx_t *tx)
void	dsl_dataset_snapshot_sync (void arg1, void arg2, dmu_tx_t *tx)
void	dsl_dataset_sync (dsl_dataset_t ds, zio_t zio, dmu_tx_t *tx)
static void	get_clones_stat (dsl_dataset_t ds, nvlist_t nv)
void	dsl_dataset_stats (dsl_dataset_t ds, nvlist_t nv)
void	dsl_dataset_fast_stat (dsl_dataset_t ds, dmu_objset_stats_t stat)
uint64_t	dsl_dataset_fsid_guid (dsl_dataset_t *ds)
void	dsl_dataset_space (dsl_dataset_t ds, uint64_t refdbytesp, uint64_t availbytesp, uint64_t usedobjsp, uint64_t *availobjsp)
boolean_t	dsl_dataset_modified_since_lastsnap (dsl_dataset_t *ds)
static int	dsl_dataset_snapshot_rename_check (void arg1, void arg2, dmu_tx_t *tx)
static void	dsl_dataset_snapshot_rename_sync (void arg1, void arg2, dmu_tx_t *tx)
static int	dsl_snapshot_rename_one (const char name, void arg)
static int	dsl_recursive_rename (char oldname, const char newname)
static int	dsl_valid_rename (const char oldname, void arg)
int	dsl_dataset_rename (char oldname, const char newname, int flags)
static int	snaplist_space (list_t l, uint64_t mintxg, uint64_t spacep)
static boolean_t	snaplist_unstable (list_t *l)
static int	dsl_dataset_promote_check (void arg1, void arg2, dmu_tx_t *tx)
static void	dsl_dataset_promote_sync (void arg1, void arg2, dmu_tx_t *tx)
static int	snaplist_make (dsl_pool_t dp, boolean_t own, uint64_t first_obj, uint64_t last_obj, list_t l)
	Make a list of dsl_dataset_t's for the snapshots between first_obj (exclusive) and last_obj (inclusive).
static void	snaplist_destroy (list_t *l, boolean_t own)
int	dsl_dataset_promote (const char name, char conflsnap)
	Promote a clone.
static int	dsl_dataset_clone_swap_check (void arg1, void arg2, dmu_tx_t *tx)
static void	dsl_dataset_clone_swap_sync (void arg1, void arg2, dmu_tx_t *tx)
int	dsl_dataset_clone_swap (dsl_dataset_t clone, dsl_dataset_t origin_head, boolean_t force)
	Swap 'clone' with its origin head datasets.
int	dsl_dsobj_to_dsname (char pname, uint64_t obj, char buf)
	Find the name of a dataset.
int	dsl_dataset_check_quota (dsl_dataset_t ds, boolean_t check_quota, uint64_t asize, uint64_t inflight, uint64_t used, uint64_t *ref_rsrv)
static int	dsl_dataset_set_quota_check (void arg1, void arg2, dmu_tx_t *tx)
void	dsl_prop_set_sync (void , void , dmu_tx_t *)
void	dsl_dataset_set_quota_sync (void arg1, void arg2, dmu_tx_t *tx)
int	dsl_dataset_set_quota (const char *dsname, zprop_source_t source, uint64_t quota)
static int	dsl_dataset_set_reservation_check (void arg1, void arg2, dmu_tx_t *tx)
static void	dsl_dataset_set_reservation_sync (void arg1, void arg2, dmu_tx_t *tx)
int	dsl_dataset_set_reservation (const char *dsname, zprop_source_t source, uint64_t reservation)
static void	dsl_dataset_user_release_onexit (void *arg)
void	dsl_register_onexit_hold_cleanup (dsl_dataset_t ds, const char htag, minor_t minor)
static int	dsl_dataset_user_hold_check (void arg1, void arg2, dmu_tx_t *tx)
	If you add new checks here, you may need to add additional checks to the "temporary" case in snapshot_check() in dmu_objset.c.
void	dsl_dataset_user_hold_sync (void arg1, void arg2, dmu_tx_t *tx)
static int	dsl_dataset_user_hold_one (const char dsname, void arg)
int	dsl_dataset_user_hold_for_send (dsl_dataset_t ds, char htag, boolean_t temphold)
int	dsl_dataset_user_hold (char dsname, char snapname, char *htag, boolean_t recursive, boolean_t temphold, int cleanup_fd)
static int	dsl_dataset_release_might_destroy (dsl_dataset_t ds, const char htag, boolean_t *might_destroy)
static int	dsl_dataset_user_release_check (void arg1, void tag, dmu_tx_t *tx)
static void	dsl_dataset_user_release_sync (void arg1, void tag, dmu_tx_t *tx)
static int	dsl_dataset_user_release_one (const char dsname, void arg)
int	dsl_dataset_user_release (char dsname, char snapname, char *htag, boolean_t recursive)
int	dsl_dataset_user_release_tmp (dsl_pool_t dp, uint64_t dsobj, char htag, boolean_t retry)
	Called at spa_load time (with retry == B_FALSE) to release a stale temporary user hold.
int	dsl_dataset_get_holds (const char dsname, nvlist_t *nvp)
int	dsl_destroy_inconsistent (const char dsname, void arg)
int	dsl_dataset_space_written (dsl_dataset_t oldsnap, dsl_dataset_t new, uint64_t usedp, uint64_t compp, uint64_t *uncompp)
int	dsl_dataset_space_wouldfree (dsl_dataset_t firstsnap, dsl_dataset_t lastsnap, uint64_t usedp, uint64_t compp, uint64_t *uncompp)
Variables
static char *	dsl_reaper = "the grim reaper"
static dsl_checkfunc_t	dsl_dataset_destroy_begin_check
static dsl_syncfunc_t	dsl_dataset_destroy_begin_sync
static dsl_syncfunc_t	dsl_dataset_set_reservation_sync
static char *	snaplist_tag = "snaplist"

Define Documentation

#define DS_REF_MAX (1ULL << 62)

Definition at line 65 of file dsl_dataset.c.

#define DSL_DATASET_IS_DESTROYED ( ds ) ((ds)->ds_owner == dsl_reaper)

Definition at line 69 of file dsl_dataset.c.

#define DSL_DEADLIST_BLOCKSIZE SPA_MAXBLOCKSIZE

Definition at line 67 of file dsl_dataset.c.

#define SWITCH64	(	x,
		y
	)

Value:

{ \
                uint64_t __tmp = (x); \
                (x) = (y); \
                (y) = __tmp; \
        }

Definition at line 58 of file dsl_dataset.c.

Typedef Documentation

typedef struct zfs_hold_cleanup_arg zfs_hold_cleanup_arg_t

Function Documentation

int dmu_snapshots_destroy_nvl	(	nvlist_t *	snaps,
		boolean_t	defer,
		char *	failed
	)

Destroy 'snapname' in all descendants of 'fsname'.

The snapshots must all be in the same pool.

Definition at line 955 of file dsl_dataset.c.

void dsl_dataset_block_born	(	dsl_dataset_t *	ds,
		const blkptr_t *	bp,
		dmu_tx_t *	tx
	)

Definition at line 93 of file dsl_dataset.c.

boolean_t dsl_dataset_block_freeable	(	dsl_dataset_t *	ds,
		const blkptr_t *	bp,
		uint64_t	blk_birth
	)

Definition at line 241 of file dsl_dataset.c.

int dsl_dataset_block_kill	(	dsl_dataset_t *	ds,
		const blkptr_t *	bp,
		dmu_tx_t *	tx,
		boolean_t	async
	)

Definition at line 131 of file dsl_dataset.c.

int dsl_dataset_check_quota	(	dsl_dataset_t *	ds,
		boolean_t	check_quota,
		uint64_t	asize,
		uint64_t	inflight,
		uint64_t *	used,
		uint64_t *	ref_rsrv
	)

Definition at line 3435 of file dsl_dataset.c.

int dsl_dataset_clone_swap	(	dsl_dataset_t *	clone,
		dsl_dataset_t *	origin_head,
		boolean_t	force
	)

Swap 'clone' with its origin head datasets.

Used at the end of "zfs recv" into an existing fs to swizzle the file system to the new version, and by "zfs rollback". Can also be used to swap two independent head datasets if neither has any snapshots.

Definition at line 3373 of file dsl_dataset.c.

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

Definition at line 3202 of file dsl_dataset.c.

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

Definition at line 3251 of file dsl_dataset.c.

uint64_t dsl_dataset_create_sync	(	dsl_dir_t *	pdd,
		const char *	lastname,
		dsl_dataset_t *	origin,
		uint64_t	flags,
		cred_t *	cr,
		dmu_tx_t *	tx
	)

Definition at line 874 of file dsl_dataset.c.

uint64_t dsl_dataset_create_sync_dd	(	dsl_dir_t *	dd,
		dsl_dataset_t *	origin,
		uint64_t	flags,
		dmu_tx_t *	tx
	)

Definition at line 775 of file dsl_dataset.c.

int dsl_dataset_destroy	(	dsl_dataset_t *	ds,
		void *	tag,
		boolean_t	defer
	)

ds must be opened as OWNER.

On return (whether successful or not), ds will be closed and caller can no longer dereference it.

Definition at line 1079 of file dsl_dataset.c.

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

Definition at line 1341 of file dsl_dataset.c.

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

Definition at line 1373 of file dsl_dataset.c.

int dsl_dataset_destroy_check	(	void *	arg1,
		void *	arg2,
		dmu_tx_t *	tx
	)

If you add new checks here, you may need to add additional checks to the "temporary" case in snapshot_check() in dmu_objset.c.

Definition at line 1429 of file dsl_dataset.c.

void dsl_dataset_destroy_sync	(	void *	arg1,
		void *	tag,
		dmu_tx_t *	tx
	)

Definition at line 1684 of file dsl_dataset.c.

void dsl_dataset_dirty	(	dsl_dataset_t *	ds,
		dmu_tx_t *	tx
	)

Definition at line 1244 of file dsl_dataset.c.

void dsl_dataset_disown	(	dsl_dataset_t *	ds,
		void *	tag
	)

Definition at line 731 of file dsl_dataset.c.

static void dsl_dataset_drain_refs	(	dsl_dataset_t *	ds,
		void *	tag
	)		`[static]`

Definition at line 1513 of file dsl_dataset.c.

void dsl_dataset_drop_ref	(	dsl_dataset_t *	ds,
		void *	tag
	)

Definition at line 716 of file dsl_dataset.c.

static void dsl_dataset_evict	(	dmu_buf_t *	db,
		void *	dsv
	)		`[static]`

Definition at line 254 of file dsl_dataset.c.

void dsl_dataset_fast_stat	(	dsl_dataset_t *	ds,
		dmu_objset_stats_t *	stat
	)

Definition at line 2368 of file dsl_dataset.c.

uint64_t dsl_dataset_fsid_guid ( dsl_dataset_t * ds )

Definition at line 2397 of file dsl_dataset.c.

blkptr_t* dsl_dataset_get_blkptr ( dsl_dataset_t * ds )

Definition at line 1219 of file dsl_dataset.c.

int dsl_dataset_get_holds	(	const char *	dsname,
		nvlist_t **	nvp
	)

Definition at line 4170 of file dsl_dataset.c.

static int dsl_dataset_get_ref	(	dsl_pool_t *	dp,
		uint64_t	dsobj,
		void *	tag,
		dsl_dataset_t **	dsp
	)		`[static]`

Definition at line 362 of file dsl_dataset.c.

static int dsl_dataset_get_snapname ( dsl_dataset_t * ds ) [static]

Definition at line 296 of file dsl_dataset.c.

spa_t* dsl_dataset_get_spa ( dsl_dataset_t * ds )

Definition at line 1238 of file dsl_dataset.c.

int dsl_dataset_hold	(	const char *	name,
		void *	tag,
		dsl_dataset_t **	dsp
	)

Definition at line 593 of file dsl_dataset.c.

int dsl_dataset_hold_obj	(	dsl_pool_t *	dp,
		uint64_t	dsobj,
		void *	tag,
		dsl_dataset_t **	dsp
	)

Definition at line 567 of file dsl_dataset.c.

static int dsl_dataset_hold_ref	(	dsl_dataset_t *	ds,
		void *	tag
	)		`[static]`

Definition at line 513 of file dsl_dataset.c.

boolean_t dsl_dataset_is_dirty ( dsl_dataset_t * ds )

Definition at line 1265 of file dsl_dataset.c.

void dsl_dataset_make_exclusive	(	dsl_dataset_t *	ds,
		void *	owner
	)

Definition at line 767 of file dsl_dataset.c.

static boolean_t dsl_dataset_might_destroy_origin ( dsl_dataset_t * ds ) [static]

Definition at line 1021 of file dsl_dataset.c.

boolean_t dsl_dataset_modified_since_lastsnap ( dsl_dataset_t * ds )

Definition at line 2426 of file dsl_dataset.c.

void dsl_dataset_name	(	dsl_dataset_t *	ds,
		char *	name
	)

Definition at line 666 of file dsl_dataset.c.

static int dsl_dataset_namelen ( dsl_dataset_t * ds ) [static]

Definition at line 691 of file dsl_dataset.c.

static int dsl_dataset_origin_check	(	struct dsl_ds_destroyarg *	dsda,
		void *	tag,
		dmu_tx_t *	tx
	)		`[static]`

Definition at line 1387 of file dsl_dataset.c.

static int dsl_dataset_origin_rm_prep	(	struct dsl_ds_destroyarg *	dsda,
		void *	tag
	)		`[static]`

If we're removing a clone, and these three conditions are true:

the clone's origin has no other children
the clone's origin has no user references
the clone's origin has been marked for deferred destruction.

Then, prepare to remove the origin as part of this sync task group.

Definition at line 1043 of file dsl_dataset.c.

int dsl_dataset_own	(	const char *	name,
		boolean_t	inconsistentok,
		void *	tag,
		dsl_dataset_t **	dsp
	)

Definition at line 652 of file dsl_dataset.c.

int dsl_dataset_own_obj	(	dsl_pool_t *	dp,
		uint64_t	dsobj,
		boolean_t	inconsistentok,
		void *	tag,
		dsl_dataset_t **	dsp
	)

Definition at line 578 of file dsl_dataset.c.

uint64_t dsl_dataset_prev_snap_txg ( dsl_dataset_t * ds )

Definition at line 218 of file dsl_dataset.c.

int dsl_dataset_promote	(	const char *	name,
		char *	conflsnap
	)

Promote a clone.

Nomenclature note:

"clone" or "cds": the original clone which is being promoted
"origin" or "ods": the snapshot which is originally clone's origin
"origin head" or "ohds": the dataset which is the head (filesystem/volume) for the origin
"origin origin": the origin of the origin's filesystem (typically NULL, indicating that the clone is not a clone of a clone).

Definition at line 3108 of file dsl_dataset.c.

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

Definition at line 2714 of file dsl_dataset.c.

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

Definition at line 2843 of file dsl_dataset.c.

static void dsl_dataset_recalc_head_uniq ( dsl_dataset_t * ds ) [static]

The unique space in the head dataset can be calculated by subtracting the space used in the most recent snapshot, that is still being used in this file system, from the space currently in use.

To figure out the space in the most recent snapshot still in use, we need to take the total space used in the snapshot and subtract out the space that has been freed up since the snapshot was taken.

Definition at line 1284 of file dsl_dataset.c.

static void dsl_dataset_refs_gone	(	dmu_buf_t *	db,
		void *	argv
	)		`[static]`

Definition at line 1502 of file dsl_dataset.c.

void dsl_dataset_rele	(	dsl_dataset_t *	ds,
		void *	tag
	)

Definition at line 722 of file dsl_dataset.c.

static int dsl_dataset_release_might_destroy	(	dsl_dataset_t *	ds,
		const char *	htag,
		boolean_t *	might_destroy
	)		`[static]`

Definition at line 3883 of file dsl_dataset.c.

static void dsl_dataset_remove_clones_key	(	dsl_dataset_t *	ds,
		uint64_t	mintxg,
		dmu_tx_t *	tx
	)		`[static]`

Definition at line 1563 of file dsl_dataset.c.

int dsl_dataset_rename	(	char *	oldname,
		const char *	newname,
		int	flags
	)

Definition at line 2640 of file dsl_dataset.c.

void dsl_dataset_set_blkptr	(	dsl_dataset_t *	ds,
		blkptr_t *	bp,
		dmu_tx_t *	tx
	)

Definition at line 1225 of file dsl_dataset.c.

int dsl_dataset_set_quota	(	const char *	dsname,
		zprop_source_t	source,
		uint64_t	quota
	)

Definition at line 3525 of file dsl_dataset.c.

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

Definition at line 3484 of file dsl_dataset.c.

void dsl_dataset_set_quota_sync	(	void *	arg1,
		void *	arg2,
		dmu_tx_t *	tx
	)

Definition at line 3509 of file dsl_dataset.c.

int dsl_dataset_set_reservation	(	const char *	dsname,
		zprop_source_t	source,
		uint64_t	reservation
	)

Definition at line 3627 of file dsl_dataset.c.

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

Definition at line 3552 of file dsl_dataset.c.

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

Definition at line 3600 of file dsl_dataset.c.

static int dsl_dataset_snap_lookup	(	dsl_dataset_t *	ds,
		const char *	name,
		uint64_t *	value
	)		`[static]`

Definition at line 321 of file dsl_dataset.c.

static int dsl_dataset_snap_remove	(	dsl_dataset_t *	ds,
		char *	name,
		dmu_tx_t *	tx
	)		`[static]`

Definition at line 341 of file dsl_dataset.c.

int dsl_dataset_snapshot_check	(	void *	arg1,
		void *	arg2,
		dmu_tx_t *	tx
	)

Definition at line 2068 of file dsl_dataset.c.

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

Definition at line 2455 of file dsl_dataset.c.

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

Definition at line 2486 of file dsl_dataset.c.

static int dsl_dataset_snapshot_reserve_space	(	dsl_dataset_t *	ds,
		dmu_tx_t *	tx
	)		`[static]`

Definition at line 2040 of file dsl_dataset.c.

void dsl_dataset_snapshot_sync	(	void *	arg1,
		void *	arg2,
		dmu_tx_t *	tx
	)

Definition at line 2107 of file dsl_dataset.c.

void dsl_dataset_space	(	dsl_dataset_t *	ds,
		uint64_t *	refdbytesp,
		uint64_t *	availbytesp,
		uint64_t *	usedobjsp,
		uint64_t *	availobjsp
	)

Definition at line 2403 of file dsl_dataset.c.

int dsl_dataset_space_wouldfree	(	dsl_dataset_t *	firstsnap,
		dsl_dataset_t *	lastsnap,
		uint64_t *	usedp,
		uint64_t *	compp,
		uint64_t *	uncompp
	)

Definition at line 4326 of file dsl_dataset.c.

int dsl_dataset_space_written	(	dsl_dataset_t *	oldsnap,
		dsl_dataset_t *	new,
		uint64_t *	usedp,
		uint64_t *	compp,
		uint64_t *	uncompp
	)

Definition at line 4238 of file dsl_dataset.c.

void dsl_dataset_stats	(	dsl_dataset_t *	ds,
		nvlist_t *	nv
	)

Definition at line 2301 of file dsl_dataset.c.

void dsl_dataset_sync	(	dsl_dataset_t *	ds,
		zio_t *	zio,
		dmu_tx_t *	tx
	)

Definition at line 2223 of file dsl_dataset.c.

boolean_t dsl_dataset_tryown	(	dsl_dataset_t *	ds,
		boolean_t	inconsistentok,
		void *	tag
	)

Definition at line 750 of file dsl_dataset.c.

int dsl_dataset_user_hold	(	char *	dsname,
		char *	snapname,
		char *	htag,
		boolean_t	recursive,
		boolean_t	temphold,
		int	cleanup_fd
	)

Definition at line 3799 of file dsl_dataset.c.

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

If you add new checks here, you may need to add additional checks to the "temporary" case in snapshot_check() in dmu_objset.c.

Definition at line 3685 of file dsl_dataset.c.

int dsl_dataset_user_hold_for_send	(	dsl_dataset_t *	ds,
		char *	htag,
		boolean_t	temphold
	)

Definition at line 3781 of file dsl_dataset.c.

static int dsl_dataset_user_hold_one	(	const char *	dsname,
		void *	arg
	)		`[static]`

Definition at line 3757 of file dsl_dataset.c.

void dsl_dataset_user_hold_sync	(	void *	arg1,
		void *	arg2,
		dmu_tx_t *	tx
	)

Definition at line 3719 of file dsl_dataset.c.

int dsl_dataset_user_release	(	char *	dsname,
		char *	snapname,
		char *	htag,
		boolean_t	recursive
	)

Definition at line 4051 of file dsl_dataset.c.

static int dsl_dataset_user_release_check	(	void *	arg1,
		void *	tag,
		dmu_tx_t *	tx
	)		`[static]`

Definition at line 3919 of file dsl_dataset.c.

static int dsl_dataset_user_release_one	(	const char *	dsname,
		void *	arg
	)		`[static]`

Definition at line 3990 of file dsl_dataset.c.

static void dsl_dataset_user_release_onexit ( void * arg ) [static]

Definition at line 3656 of file dsl_dataset.c.

static void dsl_dataset_user_release_sync	(	void *	arg1,
		void *	tag,
		dmu_tx_t *	tx
	)		`[static]`

Definition at line 3953 of file dsl_dataset.c.

int dsl_dataset_user_release_tmp	(	dsl_pool_t *	dp,
		uint64_t	dsobj,
		char *	htag,
		boolean_t	retry
	)

Called at spa_load time (with retry == B_FALSE) to release a stale temporary user hold.

Also called by the onexit code (with retry == B_TRUE).

Definition at line 4128 of file dsl_dataset.c.

int dsl_destroy_inconsistent	(	const char *	dsname,
		void *	arg
	)

Note:: This function is used as the callback for dmu_objset_find(). We always return 0 so that we will continue to find and process inconsistent datasets, even if we encounter an error trying to process one of them.

Definition at line 4207 of file dsl_dataset.c.

int dsl_dsobj_to_dsname	(	char *	pname,
		uint64_t	obj,
		char *	buf
	)

Find the name of a dataset.

Given a pool name and a dataset object number in that pool, return the name of that dataset.

Definition at line 3413 of file dsl_dataset.c.

void dsl_prop_set_sync	(	void *	,
		void *	,
		dmu_tx_t *
	)

Definition at line 551 of file dsl_prop.c.

static int dsl_recursive_rename	(	char *	oldname,
		const char *	newname
	)		`[static]`

Definition at line 2571 of file dsl_dataset.c.

void dsl_register_onexit_hold_cleanup	(	dsl_dataset_t *	ds,
		const char *	htag,
		minor_t	minor
	)

Definition at line 3666 of file dsl_dataset.c.

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

Definition at line 2530 of file dsl_dataset.c.

static int dsl_valid_rename	(	const char *	oldname,
		void *	arg
	)		`[static]`

Definition at line 2628 of file dsl_dataset.c.

static void get_clones_stat	(	dsl_dataset_t *	ds,
		nvlist_t *	nv
	)		`[static]`

Definition at line 2240 of file dsl_dataset.c.

static int kill_blkptr	(	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 1314 of file dsl_dataset.c.

static int old_synchronous_dataset_destroy	(	dsl_dataset_t *	ds,
		dmu_tx_t *	tx
	)		`[static]`

Definition at line 1660 of file dsl_dataset.c.

static int64_t parent_delta	(	dsl_dataset_t *	ds,
		int64_t	delta
	)		`[static]`

Figure out how much of this delta should be propogated to the dsl_dir layer.

If there's a refreservation, that space has already been partially accounted for in our ancestors.

Definition at line 78 of file dsl_dataset.c.

static int process_old_cb	(	void *	arg,
		const blkptr_t *	bp,
		dmu_tx_t *	tx
	)		`[static]`

Definition at line 1603 of file dsl_dataset.c.

static void process_old_deadlist	(	dsl_dataset_t *	ds,
		dsl_dataset_t *	ds_prev,
		dsl_dataset_t *	ds_next,
		boolean_t	after_branch_point,
		dmu_tx_t *	tx
	)		`[static]`

Definition at line 1626 of file dsl_dataset.c.

static void remove_from_next_clones	(	dsl_dataset_t *	ds,
		uint64_t	obj,
		dmu_tx_t *	tx
	)		`[static]`

Definition at line 1536 of file dsl_dataset.c.

static void snaplist_destroy	(	list_t *	l,
		boolean_t	own
	)		`[static]`

Definition at line 3078 of file dsl_dataset.c.

static int snaplist_make	(	dsl_pool_t *	dp,
		boolean_t	own,
		uint64_t	first_obj,
		uint64_t	last_obj,
		list_t *	l
	)		`[static]`

Make a list of dsl_dataset_t's for the snapshots between first_obj (exclusive) and last_obj (inclusive).

The list will be in reverse order (last_obj will be the list_head()). If first_obj == 0, do all snapshots back to this dataset's origin.

Definition at line 3017 of file dsl_dataset.c.

static int snaplist_space	(	list_t *	l,
		uint64_t	mintxg,
		uint64_t *	spacep
	)		`[static]`

Definition at line 3063 of file dsl_dataset.c.

static boolean_t snaplist_unstable ( list_t * l ) [static]

Variable Documentation

dsl_checkfunc_t dsl_dataset_destroy_begin_check [static]

Definition at line 54 of file dsl_dataset.c.

dsl_syncfunc_t dsl_dataset_destroy_begin_sync [static]

Definition at line 55 of file dsl_dataset.c.

dsl_syncfunc_t dsl_dataset_set_reservation_sync [static]

Definition at line 56 of file dsl_dataset.c.

char* dsl_reaper = "the grim reaper" [static]

Definition at line 52 of file dsl_dataset.c.

char* snaplist_tag = "snaplist" [static]

Definition at line 3009 of file dsl_dataset.c.

dsl_dataset.c File Reference

Data Structures

Defines

Typedefs

Functions

Variables

Define Documentation

Typedef Documentation

Function Documentation

Variable Documentation