def _check_resize_vhd(self, vhd_path, vhd_info, new_size):
curr_size = vhd_info['MaxInternalSize']
if new_size < curr_size:
raise vmutils.VHDResizeException(
_("Cannot resize a VHD "
"to a smaller size"))
elif new_size > curr_size:
self._resize_vhd(vhd_path, new_size)
def _check_target_flavor(self, instance, flavor):
new_root_gb = flavor.root_gb
curr_root_gb = instance.root_gb
if new_root_gb < curr_root_gb:
raise exception.InstanceFaultRollback(
vmutils.VHDResizeException(
_("Cannot resize the root disk to a smaller size. "
"Current size: %(curr_root_gb)s GB. Requested size: "
"%(new_root_gb)s GB") % {
'curr_root_gb': curr_root_gb,
'new_root_gb': new_root_gb
}))
def _is_resize_needed(self, vhd_path, old_size, new_size, instance):
if new_size < old_size:
error_msg = _("Cannot resize a VHD to a smaller size, the"
" original size is %(old_size)s, the"
" newer size is %(new_size)s"
) % {'old_size': old_size,
'new_size': new_size}
raise vmutils.VHDResizeException(error_msg)
elif new_size > old_size:
LOG.debug("Resizing VHD %(vhd_path)s to new "
"size %(new_size)s" %
{'new_size': new_size,
'vhd_path': vhd_path},
instance=instance)
return True
return False