def _check_and_update_root_device(self, vm_gen, image_meta,
block_device_info, slot_map):
# either booting from volume, or booting from image/iso
root_disk = {}
root_device = (driver.block_device_info_get_root(block_device_info)
or self._DEFAULT_ROOT_DEVICE)
if self.is_boot_from_volume(block_device_info):
root_volume = self._get_root_device_bdm(block_device_info,
root_device)
root_disk['type'] = constants.VOLUME
root_disk['path'] = None
root_disk['connection_info'] = root_volume['connection_info']
else:
root_disk['type'] = self._TYPE_FOR_DISK_FORMAT.get(
image_meta.disk_format)
if root_disk['type'] is None:
raise exception.InvalidImageFormat(
format=image_meta.disk_format)
root_disk['path'] = None
root_disk['connection_info'] = None
root_disk['disk_bus'] = (constants.CTRL_TYPE_IDE
if vm_gen == constants.VM_GEN_1 else
constants.CTRL_TYPE_SCSI)
(root_disk['drive_addr'],
root_disk['ctrl_disk_addr']) = self._get_available_controller_slot(
root_disk['disk_bus'], slot_map)
root_disk['boot_index'] = 0
root_disk['mount_device'] = root_device
block_device_info['root_disk'] = root_disk
def __init__(self, format):
"""Create a new abstract image
:param format: one of the format constants
"""
super(Image, self).__init__()
self.format = format
if format not in ALL_FORMATS:
raise exception.InvalidImageFormat(format=format)