20 lines
1.1 KiB
YAML
20 lines
1.1 KiB
YAML
---
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other:
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- |
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`Numbered request groups`_ can be defined in the flavor extra_spec
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but they can come from other sources as well (e.g. neutron ports).
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If there is more than one numbered request group in the
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allocation candidate query and the flavor does not specify any
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group policy then the query will fail in placement as group_policy
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is mandatory in this case. Nova previously printed a warning to the
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scheduler logs but let the request fail. However the creator of
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the flavor cannot know if the flavor later on will be used in a boot
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request that has other numbered request groups. So nova will start
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defaulting the group_policy to 'none' which means that the resource
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providers fulfilling the numbered request groups can overlap.
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Nova will only default the group_policy if it is not provided in the flavor
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extra_spec, and there is more than one numbered request group present in
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the final request, and the flavor only provided one or zero of such groups.
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.. _`Numbered request groups`: https://docs.openstack.org/nova/latest/user/flavors.html#extra-specs-numbered-resource-groupings
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