54 lines
2.2 KiB
YAML
54 lines
2.2 KiB
YAML
---
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upgrade:
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- |
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The libvirt virt driver will now attempt to record the machine type of an
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instance at startup and when launching an instance if the machine type is
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not already recorded in the image metadata associated with the instance.
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This machine type will then be used when the instance is restarted or
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migrated as it will now appear as an image metadata property associated
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with the instance.
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The following new ``nova-manage`` commands have been introduced to help
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operators manage the ``hw_machine_type`` image property:
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``nova-manage libvirt get_machine_type``
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This command will print the current machine type if set in the image
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metadata of the instance.
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``nova-manage libvirt set_machine_type``
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This command will set or update the machine type of the instance assuming
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the following criteria are met:
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* The instance must have a ``vm_state`` of ``STOPPED``, ``SHELVED`` or
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``SHELVED_OFFLOADED``.
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* The machine type is supported. The supported list includes alias and
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versioned types of ``pc``, ``pc-i440fx``, ``pc-q35``, ``q35``, ``virt``,
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``s390-ccw-virtio``, ``hyperv-gen1`` and ``hyperv-gen2`` as supported by
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the hyperv driver.
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* The update will not move the instance between underlying machine types.
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For example, ``pc`` to ``q35``.
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* The update will not move the instance between an alias and versioned
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machine type or vice versa. For example, ``pc`` to ``pc-1.2.3`` or
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``pc-1.2.3`` to ``pc``.
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A ``--force`` flag is provided to skip the above checks but caution
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should be taken as this could easily lead to the underlying ABI of the
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instance changing when moving between machine types.
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``nova-manage libvirt list_unset_machine_type``
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This command will list instance UUIDs that do not have a machine type
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recorded. An optional cell UUID can be provided to list on instances
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without a machine type from that cell.
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A new ``nova-status`` check has been introduced to help operators
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identify if any instances within their environment have ``hw_machine_type``
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unset before they attempt to change the ``[libvirt]hw_machine_type``
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configurable.
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