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[Md Nadeem <md.nadeem@xxxxxxxxxxxxxxxxxx>]

Public bug reported:

The host_passes() method return True for the compute node which do not
have the matching key-value meta data with the glance-image property.

Eg: Say if we want to filter only those compute node which has os='lx'
metadata set in the Aggregate property. To achieve the goal we need to
set os='lx' in glance image-property and created an Aggregate with
os='lx' metadata and attached the target compute nodes to it.

However  AggregateImagePropertiesIsolation filter also return all other
host in which "os" as a key is not defined along with matching target
host. like it also choose another compute node that attached to some
Aggregate whose metadata node container "os" key, it may contain some
other metadata like "cpu=4".

So as of now, to get desire result, we need to set os='lx' to the
Aggregate that attached to the target compute node and need to add all
other node to an Aggregate that must have the "os" as a key with some
other values, like os='win'.

>>https://github.com/openstack/nova/blob/c9eb9530314d047f5013941ebcfd5ef0192a9dc3/nova/scheduler/filters/aggregate_image_properties_isolation.py#L63

** Affects: nova
     Importance: Undecided
     Assignee: Md Nadeem (mail2nadeem92)
         Status: New

** Changed in: nova
     Assignee: (unassigned) => Md Nadeem (mail2nadeem92)

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https://bugs.launchpad.net/bugs/1677217

Title:
   AggregateImagePropertiesIsolation filter return unwanted compute
  nodes

Status in OpenStack Compute (nova):
  New

Bug description:
  The host_passes() method return True for the compute node which do not
  have the matching key-value meta data with the glance-image property.

  Eg: Say if we want to filter only those compute node which has os='lx'
  metadata set in the Aggregate property. To achieve the goal we need to
  set os='lx' in glance image-property and created an Aggregate with
  os='lx' metadata and attached the target compute nodes to it.

  However  AggregateImagePropertiesIsolation filter also return all
  other host in which "os" as a key is not defined along with matching
  target host. like it also choose another compute node that attached to
  some Aggregate whose metadata node container "os" key, it may contain
  some other metadata like "cpu=4".

  So as of now, to get desire result, we need to set os='lx' to the
  Aggregate that attached to the target compute node and need to add all
  other node to an Aggregate that must have the "os" as a key with some
  other values, like os='win'.

  >>https://github.com/openstack/nova/blob/c9eb9530314d047f5013941ebcfd5ef0192a9dc3/nova/scheduler/filters/aggregate_image_properties_isolation.py#L63

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