The 'AggregateImagePropertiesIsolation' scheduler filter allows users to
filter host aggregates by comparing aggregate and image metadata. The
'[filter_scheduler] aggregate_image_properties_isolation_namespace' and
'[filter_scheduler] aggregate_image_properties_isolation_separator'
options purport to allow users to specify a prefix to use for both the
aggregate and image metadata keys, allowing users to do e.g.:
openstack image set --property customized.os_type=linux $IMAGE
openstack aggregate set --property customized.os_type=windows $AGG1
openstack aggregate set --property customized.os_type=linux $AGG2
However, as noted in change If7245a90711bd2ea13095ba26b9bc82ea3e17202,
this is no longer possible since we introduced the 'ImageMetaProps' o.vo
in Liberty and promptly lost the ability to see any non-o.vo image
metadata properties from glance.
There's a possibility, however slight, that some people are using
namespaces that match actual nova namespaces such as 'hw' and a
separator of '_', but those will continue to work just fine. Setting
anything else will result in the scheduler filter failing since the
image property will always appear to be absent. As a result, these could
be outright removed rather than deprecated. We choose to deprecate just
so people can see the warnings.
Change-Id: Ide763d75e42427a9df3673313895ef47b8727802
Signed-off-by: Stephen Finucane <stephenfin@redhat.com>
Stephen Finucane
fcbedce558