Merge "Add descriptions of numbered resource classes and traits"
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@ -732,3 +732,48 @@ Forbidden traits
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Traits can be managed using the `osc-placement plugin`_.
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Traits can be managed using the `osc-placement plugin`_.
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.. _osc-placement plugin: https://docs.openstack.org/osc-placement/latest/index.html
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.. _osc-placement plugin: https://docs.openstack.org/osc-placement/latest/index.html
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Numbered groupings of resource classes and traits
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Added in the 18.0.0 Rocky release.
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Specify numbered groupings of resource classes and traits.
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The syntax is as follows (``N`` and ``VALUE`` are integers):
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.. parsed-literal::
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resources\ *N*:*<resource_class_name>*\ =\ *VALUE*
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trait\ *N*:*<trait_name>*\ =required
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A given numbered ``resources`` or ``trait`` key may be repeated to
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specify multiple resources/traits in the same grouping,
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just as with the un-numbered syntax.
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Specify inter-group affinity policy via the ``group_policy`` key,
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which may have the following values:
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* ``isolate``: Different numbered request groups will be satisfied by
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*different* providers.
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* ``none``: Different numbered request groups may be satisfied
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by different providers *or* common providers.
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For example, to create a server with the following VFs:
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* One SR-IOV virtual function (VF) on NET1 with bandwidth 10000 bytes/sec
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* One SR-IOV virtual function (VF) on NET2 with bandwidth 20000 bytes/sec
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on a *different* NIC with SSL acceleration
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It is specified in the extra specs as follows::
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resources1:SRIOV_NET_VF=1
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resources1:NET_EGRESS_BYTES_SEC=10000
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trait1:CUSTOM_PHYSNET_NET1=required
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resources2:SRIOV_NET_VF=1
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resources2:NET_EGRESS_BYTES_SEC:20000
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trait2:CUSTOM_PHYSNET_NET2=required
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trait2:HW_NIC_ACCEL_SSL=required
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group_policy=isolate
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See `Granular Resource Request Syntax`_ for more details.
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.. _Granular Resource Request Syntax: https://specs.openstack.org/openstack/nova-specs/specs/rocky/implemented/granular-resource-requests.html
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