X-Git-Url: https://git.camperquake.de/gitweb.cgi?a=blobdiff_plain;f=module%2Fzfs%2Finclude%2Fsys%2Fdsl_dataset.h;h=58414e13318b8f6ce9fe254b0e65a4b113916254;hb=428870ff734fdaccc342b33fc53cf94724409a46;hp=8665aec2dda87a2ea9948860903e447bff40db36;hpb=172bb4bd5e4afef721dd4d2972d8680d983f144b;p=zfs.git diff --git a/module/zfs/include/sys/dsl_dataset.h b/module/zfs/include/sys/dsl_dataset.h index 8665aec..58414e1 100644 --- a/module/zfs/include/sys/dsl_dataset.h +++ b/module/zfs/include/sys/dsl_dataset.h @@ -19,8 +19,7 @@ * CDDL HEADER END */ /* - * Copyright 2008 Sun Microsystems, Inc. All rights reserved. - * Use is subject to license terms. + * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved. */ #ifndef _SYS_DSL_DATASET_H @@ -33,6 +32,7 @@ #include #include #include +#include #ifdef __cplusplus extern "C" { @@ -42,8 +42,6 @@ struct dsl_dataset; struct dsl_dir; struct dsl_pool; -typedef void dsl_dataset_evict_func_t(struct dsl_dataset *, void *); - #define DS_FLAG_INCONSISTENT (1ULL<<0) #define DS_IS_INCONSISTENT(ds) \ ((ds)->ds_phys->ds_flags & DS_FLAG_INCONSISTENT) @@ -63,6 +61,14 @@ typedef void dsl_dataset_evict_func_t(struct dsl_dataset *, void *); #define DS_FLAG_UNIQUE_ACCURATE (1ULL<<2) /* + * DS_FLAG_DEFER_DESTROY is set after 'zfs destroy -d' has been called + * on a dataset. This allows the dataset to be destroyed using 'zfs release'. + */ +#define DS_FLAG_DEFER_DESTROY (1ULL<<3) +#define DS_IS_DEFER_DESTROY(ds) \ + ((ds)->ds_phys->ds_flags & DS_FLAG_DEFER_DESTROY) + +/* * DS_FLAG_CI_DATASET is set if the dataset contains a file system whose * name lookups should be performed case-insensitively. */ @@ -77,7 +83,7 @@ typedef struct dsl_dataset_phys { uint64_t ds_num_children; /* clone/snap children; ==0 for head */ uint64_t ds_creation_time; /* seconds since 1970 */ uint64_t ds_creation_txg; - uint64_t ds_deadlist_obj; /* DMU_OT_BPLIST */ + uint64_t ds_deadlist_obj; /* DMU_OT_DEADLIST */ uint64_t ds_used_bytes; uint64_t ds_compressed_bytes; uint64_t ds_uncompressed_bytes; @@ -93,7 +99,8 @@ typedef struct dsl_dataset_phys { blkptr_t ds_bp; uint64_t ds_next_clones_obj; /* DMU_OT_DSL_CLONES */ uint64_t ds_props_obj; /* DMU_OT_DSL_PROPS for snaps */ - uint64_t ds_pad[6]; /* pad out to 320 bytes for good measure */ + uint64_t ds_userrefs_obj; /* DMU_OT_USERREFS */ + uint64_t ds_pad[5]; /* pad out to 320 bytes for good measure */ } dsl_dataset_phys_t; typedef struct dsl_dataset { @@ -106,10 +113,13 @@ typedef struct dsl_dataset { /* only used in syncing context, only valid for non-snapshots: */ struct dsl_dataset *ds_prev; - uint64_t ds_origin_txg; /* has internal locking: */ - bplist_t ds_deadlist; + 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; @@ -120,8 +130,8 @@ typedef struct dsl_dataset { * Protected by ds_lock: */ kmutex_t ds_lock; - void *ds_user_ptr; - dsl_dataset_evict_func_t *ds_user_evict_func; + objset_t *ds_objset; + uint64_t ds_userrefs; /* * ds_owner is protected by the ds_rwlock and the ds_lock @@ -143,7 +153,16 @@ typedef struct dsl_dataset { char ds_snapname[MAXNAMELEN]; } dsl_dataset_t; -#define dsl_dataset_is_snapshot(ds) \ +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? */ +}; + +#define dsl_dataset_is_snapshot(ds) \ ((ds)->ds_phys->ds_num_children != 0) #define DS_UNIQUE_IS_ACCURATE(ds) \ @@ -152,36 +171,38 @@ typedef struct dsl_dataset { 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, int flags, void *owner, - dsl_dataset_t **dsp); +int dsl_dataset_own(const char *name, boolean_t inconsistentok, + void *tag, dsl_dataset_t **dsp); int dsl_dataset_own_obj(struct dsl_pool *dp, uint64_t dsobj, - int flags, void *owner, dsl_dataset_t **); + 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 dsl_dataset_disown(dsl_dataset_t *ds, void *owner); +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 *owner); -void dsl_dataset_make_exclusive(dsl_dataset_t *ds, void *owner); + void *tag); +void dsl_dataset_make_exclusive(dsl_dataset_t *ds, void *tag); 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); -int dsl_snapshots_destroy(char *fsname, char *snapname); +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; -int dsl_dataset_rollback(dsl_dataset_t *ds, dmu_objset_type_t ost); int dsl_dataset_rename(char *name, const char *newname, boolean_t recursive); -int dsl_dataset_promote(const char *name); +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); - -void *dsl_dataset_set_user_ptr(dsl_dataset_t *ds, - void *p, dsl_dataset_evict_func_t func); -void *dsl_dataset_get_user_ptr(dsl_dataset_t *ds); +int dsl_dataset_user_hold(char *dsname, char *snapname, char *htag, + boolean_t recursive, 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); +int dsl_dataset_get_holds(const char *dsname, nvlist_t **nvp); 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); @@ -192,10 +213,12 @@ boolean_t dsl_dataset_modified_since_lastsnap(dsl_dataset_t *ds); void dsl_dataset_sync(dsl_dataset_t *os, zio_t *zio, dmu_tx_t *tx); -void dsl_dataset_block_born(dsl_dataset_t *ds, blkptr_t *bp, dmu_tx_t *tx); -int dsl_dataset_block_kill(dsl_dataset_t *ds, blkptr_t *bp, zio_t *pio, +void dsl_dataset_block_born(dsl_dataset_t *ds, const blkptr_t *bp, dmu_tx_t *tx); -int dsl_dataset_block_freeable(dsl_dataset_t *ds, uint64_t blk_birth); +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); void dsl_dataset_dirty(dsl_dataset_t *ds, dmu_tx_t *tx); @@ -211,13 +234,13 @@ int dsl_dsobj_to_dsname(char *pname, uint64_t obj, char *buf); 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, uint64_t quota); -void dsl_dataset_set_quota_sync(void *arg1, void *arg2, cred_t *cr, - dmu_tx_t *tx); -int dsl_dataset_set_reservation(const char *dsname, uint64_t reservation); -void dsl_dataset_set_flags(dsl_dataset_t *ds, uint64_t flags); -int64_t dsl_dataset_new_refreservation(dsl_dataset_t *ds, uint64_t reservation, - dmu_tx_t *tx); +int dsl_dataset_set_quota(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, + uint64_t reservation); + +int dsl_destroy_inconsistent(const char *dsname, void *arg); #ifdef ZFS_DEBUG #define dprintf_ds(ds, fmt, ...) do { \