*/
/*
* Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
- * Copyright (c) 2012 by Delphix. All rights reserved.
- * Copyright (c) 2012, Joyent, Inc. All rights reserved.
+ * Copyright (c) 2011, 2015 by Delphix. All rights reserved.
+ * Copyright (c) 2011, 2014 by Delphix. All rights reserved.
+ * Copyright (c) 2013 Steven Hartland. All rights reserved.
+ * Copyright (c) 2014 Spectra Logic Corporation, All rights reserved.
*/
#ifndef _SYS_DSL_DATASET_H
#include <sys/dsl_synctask.h>
#include <sys/zfs_context.h>
#include <sys/dsl_deadlist.h>
+#include <sys/refcount.h>
+#include <sys/rrwlock.h>
+#include <zfeature_common.h>
#ifdef __cplusplus
extern "C" {
#define DS_FLAG_INCONSISTENT (1ULL<<0)
#define DS_IS_INCONSISTENT(ds) \
- ((ds)->ds_phys->ds_flags & DS_FLAG_INCONSISTENT)
+ (dsl_dataset_phys(ds)->ds_flags & DS_FLAG_INCONSISTENT)
+
/*
- * NB: nopromote can not yet be set, but we want support for it in this
- * on-disk version, so that we don't need to upgrade for it later. It
- * will be needed when we implement 'zfs split' (where the split off
- * clone should not be promoted).
+ * Do not allow this dataset to be promoted.
*/
#define DS_FLAG_NOPROMOTE (1ULL<<1)
*/
#define DS_FLAG_DEFER_DESTROY (1ULL<<3)
#define DS_IS_DEFER_DESTROY(ds) \
- ((ds)->ds_phys->ds_flags & DS_FLAG_DEFER_DESTROY)
+ (dsl_dataset_phys(ds)->ds_flags & DS_FLAG_DEFER_DESTROY)
+
+/*
+ * DS_FIELD_* are strings that are used in the "extensified" dataset zap object.
+ * They should be of the format <reverse-dns>:<field>.
+ */
+
+/*
+ * This field's value is the object ID of a zap object which contains the
+ * bookmarks of this dataset. If it is present, then this dataset is counted
+ * in the refcount of the SPA_FEATURES_BOOKMARKS feature.
+ */
+#define DS_FIELD_BOOKMARK_NAMES "com.delphix:bookmarks"
+
+/*
+ * This field is present (with value=0) if this dataset may contain large
+ * dnodes (>512B). If it is present, then this dataset is counted in the
+ * refcount of the SPA_FEATURE_LARGE_DNODE feature.
+ */
+#define DS_FIELD_LARGE_DNODE "org.zfsonlinux:large_dnode"
+
+/*
+ * These fields are set on datasets that are in the middle of a resumable
+ * receive, and allow the sender to resume the send if it is interrupted.
+ */
+#define DS_FIELD_RESUME_FROMGUID "com.delphix:resume_fromguid"
+#define DS_FIELD_RESUME_TONAME "com.delphix:resume_toname"
+#define DS_FIELD_RESUME_TOGUID "com.delphix:resume_toguid"
+#define DS_FIELD_RESUME_OBJECT "com.delphix:resume_object"
+#define DS_FIELD_RESUME_OFFSET "com.delphix:resume_offset"
+#define DS_FIELD_RESUME_BYTES "com.delphix:resume_bytes"
+#define DS_FIELD_RESUME_LARGEBLOCK "com.delphix:resume_largeblockok"
+#define DS_FIELD_RESUME_EMBEDOK "com.delphix:resume_embedok"
+#define DS_FIELD_RESUME_COMPRESSOK "com.delphix:resume_compressok"
/*
* DS_FLAG_CI_DATASET is set if the dataset contains a file system whose
*/
#define DS_FLAG_CI_DATASET (1ULL<<16)
+#define DS_CREATE_FLAG_NODIRTY (1ULL<<24)
+
typedef struct dsl_dataset_phys {
uint64_t ds_dir_obj; /* DMU_OT_DSL_DIR */
uint64_t ds_prev_snap_obj; /* DMU_OT_DSL_DATASET */
} dsl_dataset_phys_t;
typedef struct dsl_dataset {
+ dmu_buf_user_t ds_dbu;
+ rrwlock_t ds_bp_rwlock; /* Protects ds_phys->ds_bp */
+
/* Immutable: */
struct dsl_dir *ds_dir;
- dsl_dataset_phys_t *ds_phys;
dmu_buf_t *ds_dbuf;
uint64_t ds_object;
uint64_t ds_fsid_guid;
+ boolean_t ds_is_snapshot;
/* only used in syncing context, only valid for non-snapshots: */
struct dsl_dataset *ds_prev;
+ uint64_t ds_bookmarks; /* DMU_OTN_ZAP_METADATA */
/* has internal locking: */
dsl_deadlist_t ds_deadlist;
bplist_t ds_pending_deadlist;
- /* to protect against multiple concurrent incremental recv */
- kmutex_t ds_recvlock;
-
/* protected by lock on pool's dp_dirty_datasets list */
txg_node_t ds_dirty_link;
list_node_t ds_synced_link;
kmutex_t ds_lock;
objset_t *ds_objset;
uint64_t ds_userrefs;
+ void *ds_owner;
/*
- * ds_owner is protected by the ds_rwlock and the ds_lock
+ * Long holds prevent the ds from being destroyed; they allow the
+ * ds to remain held even after dropping the dp_config_rwlock.
+ * Owning counts as a long hold. See the comments above
+ * dsl_pool_hold() for details.
*/
- krwlock_t ds_rwlock;
- kcondvar_t ds_exclusive_cv;
- void *ds_owner;
+ refcount_t ds_longholds;
/* no locking; only for making guesses */
uint64_t ds_trysnap_txg;
kmutex_t ds_sendstream_lock;
list_t ds_sendstreams;
+ /*
+ * When in the middle of a resumable receive, tracks how much
+ * progress we have made.
+ */
+ uint64_t ds_resume_object[TXG_SIZE];
+ uint64_t ds_resume_offset[TXG_SIZE];
+ uint64_t ds_resume_bytes[TXG_SIZE];
+
+ /* Protected by our dsl_dir's dd_lock */
+ list_t ds_prop_cbs;
+
+ /*
+ * For ZFEATURE_FLAG_PER_DATASET features, set if this dataset
+ * uses this feature.
+ */
+ uint8_t ds_feature_inuse[SPA_FEATURES];
+
+ /*
+ * Set if we need to activate the feature on this dataset this txg
+ * (used only in syncing context).
+ */
+ uint8_t ds_feature_activation_needed[SPA_FEATURES];
+
/* Protected by ds_lock; keep at end of struct for better locality */
- char ds_snapname[MAXNAMELEN];
+ char ds_snapname[ZFS_MAX_DATASET_NAME_LEN];
} dsl_dataset_t;
-struct dsl_ds_destroyarg {
- dsl_dataset_t *ds; /* ds to destroy */
- dsl_dataset_t *rm_origin; /* also remove our origin? */
- boolean_t is_origin_rm; /* set if removing origin snap */
- boolean_t defer; /* destroy -d requested? */
- boolean_t releasing; /* destroying due to release? */
- boolean_t need_prep; /* do we need to retry due to EBUSY? */
-};
+static inline dsl_dataset_phys_t *
+dsl_dataset_phys(dsl_dataset_t *ds)
+{
+ return (ds->ds_dbuf->db_data);
+}
/*
* The max length of a temporary tag prefix is the number of hex digits
*/
#define MAX_TAG_PREFIX_LEN 17
-struct dsl_ds_holdarg {
- dsl_sync_task_group_t *dstg;
- char *htag;
- char *snapname;
- boolean_t recursive;
- boolean_t gotone;
- boolean_t temphold;
- char failed[MAXPATHLEN];
-};
-
#define dsl_dataset_is_snapshot(ds) \
- ((ds)->ds_phys->ds_num_children != 0)
+ (dsl_dataset_phys(ds)->ds_num_children != 0)
#define DS_UNIQUE_IS_ACCURATE(ds) \
- (((ds)->ds_phys->ds_flags & DS_FLAG_UNIQUE_ACCURATE) != 0)
+ ((dsl_dataset_phys(ds)->ds_flags & DS_FLAG_UNIQUE_ACCURATE) != 0)
-int dsl_dataset_hold(const char *name, void *tag, dsl_dataset_t **dsp);
-int dsl_dataset_hold_obj(struct dsl_pool *dp, uint64_t dsobj,
- void *tag, dsl_dataset_t **);
-int dsl_dataset_own(const char *name, boolean_t inconsistentok,
+int dsl_dataset_hold(struct dsl_pool *dp, const char *name, void *tag,
+ dsl_dataset_t **dsp);
+boolean_t dsl_dataset_try_add_ref(struct dsl_pool *dp, dsl_dataset_t *ds,
+ void *tag);
+int dsl_dataset_hold_obj(struct dsl_pool *dp, uint64_t dsobj, void *tag,
+ dsl_dataset_t **);
+void dsl_dataset_rele(dsl_dataset_t *ds, void *tag);
+int dsl_dataset_own(struct dsl_pool *dp, const char *name,
void *tag, dsl_dataset_t **dsp);
int dsl_dataset_own_obj(struct dsl_pool *dp, uint64_t dsobj,
- boolean_t inconsistentok, void *tag, dsl_dataset_t **dsp);
-void dsl_dataset_name(dsl_dataset_t *ds, char *name);
-void dsl_dataset_rele(dsl_dataset_t *ds, void *tag);
+ void *tag, dsl_dataset_t **dsp);
void dsl_dataset_disown(dsl_dataset_t *ds, void *tag);
-void dsl_dataset_drop_ref(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 *tag);
-void dsl_register_onexit_hold_cleanup(dsl_dataset_t *ds, const char *htag,
- minor_t minor);
+void dsl_dataset_name(dsl_dataset_t *ds, char *name);
+boolean_t dsl_dataset_tryown(dsl_dataset_t *ds, void *tag);
+int dsl_dataset_namelen(dsl_dataset_t *ds);
+boolean_t dsl_dataset_has_owner(dsl_dataset_t *ds);
uint64_t dsl_dataset_create_sync(dsl_dir_t *pds, const char *lastname,
dsl_dataset_t *origin, uint64_t flags, cred_t *, dmu_tx_t *);
uint64_t dsl_dataset_create_sync_dd(dsl_dir_t *dd, dsl_dataset_t *origin,
uint64_t flags, dmu_tx_t *tx);
-int dsl_dataset_destroy(dsl_dataset_t *ds, void *tag, boolean_t defer);
-int dsl_snapshots_destroy(char *fsname, char *snapname, boolean_t defer);
-dsl_checkfunc_t dsl_dataset_destroy_check;
-dsl_syncfunc_t dsl_dataset_destroy_sync;
-dsl_checkfunc_t dsl_dataset_snapshot_check;
-dsl_syncfunc_t dsl_dataset_snapshot_sync;
-dsl_syncfunc_t dsl_dataset_user_hold_sync;
-int dsl_dataset_rename(char *name, const char *newname, boolean_t recursive);
+int dsl_dataset_snapshot(nvlist_t *snaps, nvlist_t *props, nvlist_t *errors);
int dsl_dataset_promote(const char *name, char *conflsnap);
-int dsl_dataset_clone_swap(dsl_dataset_t *clone, dsl_dataset_t *origin_head,
- boolean_t force);
-int dsl_dataset_user_hold(char *dsname, char *snapname, char *htag,
- boolean_t recursive, boolean_t temphold, int cleanup_fd);
-int dsl_dataset_user_hold_for_send(dsl_dataset_t *ds, char *htag,
- boolean_t temphold);
-int dsl_dataset_user_release(char *dsname, char *snapname, char *htag,
- boolean_t recursive);
-int dsl_dataset_user_release_tmp(struct dsl_pool *dp, uint64_t dsobj,
- char *htag, boolean_t retry);
-int dsl_dataset_get_holds(const char *dsname, nvlist_t **nvp);
+int dsl_dataset_rename_snapshot(const char *fsname,
+ const char *oldsnapname, const char *newsnapname, boolean_t recursive);
+int dsl_dataset_snapshot_tmp(const char *fsname, const char *snapname,
+ minor_t cleanup_minor, const char *htag);
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);
-boolean_t dsl_dataset_modified_since_lastsnap(dsl_dataset_t *ds);
+boolean_t dsl_dataset_modified_since_snap(dsl_dataset_t *ds,
+ dsl_dataset_t *snap);
void dsl_dataset_sync(dsl_dataset_t *os, zio_t *zio, dmu_tx_t *tx);
+void dsl_dataset_sync_done(dsl_dataset_t *os, dmu_tx_t *tx);
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);
-boolean_t dsl_dataset_block_freeable(dsl_dataset_t *ds, const blkptr_t *bp,
- uint64_t blk_birth);
-uint64_t dsl_dataset_prev_snap_txg(dsl_dataset_t *ds);
+int dsl_dataset_snap_lookup(dsl_dataset_t *ds, const char *name,
+ uint64_t *value);
void dsl_dataset_dirty(dsl_dataset_t *ds, dmu_tx_t *tx);
void dsl_dataset_stats(dsl_dataset_t *os, nvlist_t *nv);
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);
-int dsl_dataset_set_quota(const char *dsname, zprop_source_t source,
+int dsl_dataset_set_refquota(const char *dsname, zprop_source_t source,
uint64_t quota);
-dsl_syncfunc_t dsl_dataset_set_quota_sync;
-int dsl_dataset_set_reservation(const char *dsname, zprop_source_t source,
+int dsl_dataset_set_refreservation(const char *dsname, zprop_source_t source,
uint64_t reservation);
-int dsl_destroy_inconsistent(const char *dsname, void *arg);
+boolean_t dsl_dataset_is_before(dsl_dataset_t *later, dsl_dataset_t *earlier,
+ uint64_t earlier_txg);
+void dsl_dataset_long_hold(dsl_dataset_t *ds, void *tag);
+void dsl_dataset_long_rele(dsl_dataset_t *ds, void *tag);
+boolean_t dsl_dataset_long_held(dsl_dataset_t *ds);
+
+int dsl_dataset_clone_swap_check_impl(dsl_dataset_t *clone,
+ dsl_dataset_t *origin_head, boolean_t force, void *owner, dmu_tx_t *tx);
+void dsl_dataset_clone_swap_sync_impl(dsl_dataset_t *clone,
+ dsl_dataset_t *origin_head, dmu_tx_t *tx);
+int dsl_dataset_snapshot_check_impl(dsl_dataset_t *ds, const char *snapname,
+ dmu_tx_t *tx, boolean_t recv, uint64_t cnt, cred_t *cr);
+void dsl_dataset_snapshot_sync_impl(dsl_dataset_t *ds, const char *snapname,
+ dmu_tx_t *tx);
+
+void dsl_dataset_remove_from_next_clones(dsl_dataset_t *ds, uint64_t obj,
+ dmu_tx_t *tx);
+void dsl_dataset_recalc_head_uniq(dsl_dataset_t *ds);
+int dsl_dataset_get_snapname(dsl_dataset_t *ds);
+int dsl_dataset_snap_lookup(dsl_dataset_t *ds, const char *name,
+ uint64_t *value);
+int dsl_dataset_snap_remove(dsl_dataset_t *ds, const char *name, dmu_tx_t *tx,
+ boolean_t adj_cnt);
+void dsl_dataset_set_refreservation_sync_impl(dsl_dataset_t *ds,
+ zprop_source_t source, uint64_t value, dmu_tx_t *tx);
+void dsl_dataset_zapify(dsl_dataset_t *ds, dmu_tx_t *tx);
+boolean_t dsl_dataset_is_zapified(dsl_dataset_t *ds);
+boolean_t dsl_dataset_has_resume_receive_state(dsl_dataset_t *ds);
+int dsl_dataset_rollback(const char *fsname, const char *tosnap, void *owner,
+ nvlist_t *result);
+
+void dsl_dataset_deactivate_feature(uint64_t dsobj,
+ spa_feature_t f, dmu_tx_t *tx);
#ifdef ZFS_DEBUG
#define dprintf_ds(ds, fmt, ...) do { \
if (zfs_flags & ZFS_DEBUG_DPRINTF) { \
- char *__ds_name = kmem_alloc(MAXNAMELEN, KM_PUSHPAGE); \
+ char *__ds_name = kmem_alloc(ZFS_MAX_DATASET_NAME_LEN, KM_SLEEP); \
dsl_dataset_name(ds, __ds_name); \
dprintf("ds=%s " fmt, __ds_name, __VA_ARGS__); \
- kmem_free(__ds_name, MAXNAMELEN); \
+ kmem_free(__ds_name, ZFS_MAX_DATASET_NAME_LEN); \
} \
_NOTE(CONSTCOND) } while (0)
#else
projects / zfs / blobdiff