* Reopens or creates a new, empty metadata volume.
*/
struct dm_pool_metadata *dm_pool_metadata_open(struct block_device *bdev,
- sector_t data_block_size);
+ sector_t data_block_size,
+ bool format_device);
int dm_pool_metadata_close(struct dm_pool_metadata *pmd);
*/
int dm_pool_commit_metadata(struct dm_pool_metadata *pmd);
+/*
+ * Discards all uncommitted changes. Rereads the superblock, rolling back
+ * to the last good transaction. Thin devices remain open.
+ * dm_thin_aborted_changes() tells you if they had uncommitted changes.
+ *
+ * If this call fails it's only useful to call dm_pool_metadata_close().
+ * All other methods will fail with -EINVAL.
+ */
+int dm_pool_abort_metadata(struct dm_pool_metadata *pmd);
+
/*
* Set/get userspace transaction id.
*/
struct dm_thin_lookup_result {
dm_block_t block;
- int shared;
+ unsigned shared:1;
};
/*
/*
* Queries.
*/
+bool dm_thin_changed_this_transaction(struct dm_thin_device *td);
+
+bool dm_thin_aborted_changes(struct dm_thin_device *td);
+
int dm_thin_get_highest_mapped_block(struct dm_thin_device *td,
dm_block_t *highest_mapped);
*/
int dm_pool_resize_data_dev(struct dm_pool_metadata *pmd, dm_block_t new_size);
+/*
+ * Flicks the underlying block manager into read only mode, so you know
+ * that nothing is changing.
+ */
+void dm_pool_metadata_read_only(struct dm_pool_metadata *pmd);
+
/*----------------------------------------------------------------*/
#endif