Comment 0 for bug 1221244

These methods that handles block device mapping pass instance['name'] to attach/detach_volume(), but it should be instance itself.

    def _attach_block_devices(self, instance, block_device_info):
        block_device_mapping = driver.\
                block_device_info_get_mapping(block_device_info)
        for vol in block_device_mapping:
            connection_info = vol['connection_info']
            mountpoint = vol['mount_device']
            self.attach_volume(
                    connection_info, instance['name'], mountpoint)

    def _detach_block_devices(self, instance, block_device_info):
        block_device_mapping = driver.\
                block_device_info_get_mapping(block_device_info)
        for vol in block_device_mapping:
            connection_info = vol['connection_info']
            mountpoint = vol['mount_device']
            self.detach_volume(
                    connection_info, instance['name'], mountpoint)