Comment 2 for bug 1644522

I think this bug is invalid, due to RootDiskSelectionHook:before_update validates the not-found root_device hint causes mismatch error! It works on desired.

    def before_update(self, introspection_data, node_info, **kwargs):
        """Detect root disk from root device hints and IPA inventory."""
        hints = node_info.node().properties.get('root_device')
        if not hints:
            LOG.debug('Root device hints are not provided',
                      node_info=node_info, data=introspection_data)
            return

        inventory = utils.get_inventory(introspection_data,
                                        node_info=node_info)
        try:
            device = il_utils.match_root_device_hints(inventory['disks'],
                                                      hints)
        except (TypeError, ValueError) as e:
            raise utils.Error(
                _('No disks could be found using the root device hints '
                  '%(hints)s because they failed to validate. '
                  'Error: %(error)s') % {'hints': hints, 'error': e},
                node_info=node_info, data=introspection_data)

        if not device:
            raise utils.Error(_('No disks satisfied root device hints'),
                              node_info=node_info, data=introspection_data)

        LOG.debug('Disk %(disk)s of size %(size)s satisfies '
                  'root device hints',
                  {'disk': device.get('name'), 'size': device['size']},
                  node_info=node_info, data=introspection_data)
        introspection_data['root_disk'] = device

######
Last error:
| last_error | ironic-inspector inspection failed: No disks satisfied root device hints |