Comment 20 for bug 1195361

Reviewed: https://review.openstack.org/531347
Committed: https://git.openstack.org/cgit/openstack/nova/commit/?id=eaa766ee2093c24fd61c61e52f46bdd9ff9e93d2
Submitter: Zuul
Branch: master

commit eaa766ee2093c24fd61c61e52f46bdd9ff9e93d2
Author: Tetsuro Nakamura <email address hidden>
Date: Fri Jan 5 16:59:29 2018 +0900

    [libvirt] Filter hypervisor_type by virt_type

    ComputeNode.supported_hv_specs field has hypervisor_type
    infomation about which type (e.g. KVM or both KVM and QEMU) of guests
    are supported by the hypervisor, but it doesn't supply information
    about which virt_type is set to that compute node.

    This means that we have no way to know which type of guests are going
    to be built in that compute node from the ComputeNode object. This can
    cause wrong behavior in scheduler filters using the supported_hv_specs
    object, such as ImagePropertiesFilter.

    In libvirt driver, this patch adds a filter to exclude supported
    hypervisor_types other than the virt_type which has been set by
    operator via nova.conf.

    Partial-Bug: #1195361
    Change-Id: I986fe09f97e4d5cad940bea85a87c58606314dba