...The DB will be created if not exist, unless ErrorIfMissing is true. Also, if ErrorIfExist is true and the DB exist OpenFile will returns os.ErrExist error. OpenFile uses standard file-system backed storage implementation as described in the leveldb/storage package. OpenFile will return an error with type of ErrCorrupted if corruption is detected in the DB. Use errors.IsCorrupted to test whether an error is due to corruption. Corrupted DB can be recovered with Recover function. CompactRange compacts the underlying DB for the given key range. ...