diff options
Diffstat (limited to 'include/sys/dsl_dataset.h')
| -rw-r--r-- | include/sys/dsl_dataset.h | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/include/sys/dsl_dataset.h b/include/sys/dsl_dataset.h index 0030fca24..abd178e30 100644 --- a/include/sys/dsl_dataset.h +++ b/include/sys/dsl_dataset.h @@ -109,6 +109,11 @@ struct dsl_crypto_params; #define DS_FIELD_RESUME_RAWOK "com.datto:resume_rawok" /* + * This field is set to the object number of the remap deadlist if one exists. + */ +#define DS_FIELD_REMAP_DEADLIST "com.delphix:remap_deadlist" + +/* * DS_FLAG_CI_DATASET is set if the dataset contains a file system whose * name lookups should be performed case-insensitively. */ @@ -169,6 +174,24 @@ typedef struct dsl_dataset { dsl_deadlist_t ds_deadlist; bplist_t ds_pending_deadlist; + /* + * The remap deadlist contains blocks (DVA's, really) that are + * referenced by the previous snapshot and point to indirect vdevs, + * but in this dataset they have been remapped to point to concrete + * (or at least, less-indirect) vdevs. In other words, the + * physical DVA is referenced by the previous snapshot but not by + * this dataset. Logically, the DVA continues to be referenced, + * but we are using a different (less indirect) physical DVA. + * This deadlist is used to determine when physical DVAs that + * point to indirect vdevs are no longer referenced anywhere, + * and thus should be marked obsolete. + * + * This is only used if SPA_FEATURE_OBSOLETE_COUNTS is enabled. + */ + dsl_deadlist_t ds_remap_deadlist; + /* protects creation of the ds_remap_deadlist */ + kmutex_t ds_remap_deadlist_lock; + /* protected by lock on pool's dp_dirty_datasets list */ txg_node_t ds_dirty_link; list_node_t ds_synced_link; @@ -328,6 +351,8 @@ 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); +void dsl_dataset_block_remapped(dsl_dataset_t *ds, uint64_t vdev, + uint64_t offset, uint64_t size, uint64_t birth, dmu_tx_t *tx); int dsl_dataset_snap_lookup(dsl_dataset_t *ds, const char *name, uint64_t *value); @@ -416,6 +441,11 @@ void dsl_dataset_rollback_sync(void *arg, dmu_tx_t *tx); int dsl_dataset_rollback(const char *fsname, const char *tosnap, void *owner, nvlist_t *result); +uint64_t dsl_dataset_get_remap_deadlist_object(dsl_dataset_t *ds); +void dsl_dataset_create_remap_deadlist(dsl_dataset_t *ds, dmu_tx_t *tx); +boolean_t dsl_dataset_remap_deadlist_exists(dsl_dataset_t *ds); +void dsl_dataset_destroy_remap_deadlist(dsl_dataset_t *ds, dmu_tx_t *tx); + void dsl_dataset_activate_feature(uint64_t dsobj, spa_feature_t f, dmu_tx_t *tx); void dsl_dataset_deactivate_feature(uint64_t dsobj, |