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[alisafari <2043030@xxxxxxxxxxxxxxxxxx>]

Public bug reported:

I'm having trouble with Flavor which have
trait:HW_CPU_X86_VMX='required' as a requirement.

I've checked the code and get_flags_by_flavor_specs at https://opendev.org/openstack/nova/src/commit/b64ecb0cc776bd3eced674b0f879bb23c8a4b486/nova/virt/libvirt/utils.py#L656 is expecting that each key in TRAITS_CPU_MAPPING is a string but as you can see HW_CPU_X86_VMX is actually part of a tuple (os_traits.HW_CPU_X86_VMX, os_traits.HW_CPU_X86_INTEL_VMX).
and get_flags_by_flavor_specs fails to extract vmx flag from flavors properly.

I've been experiencing this issue on Antelope and based on current state
of master it's still out there.

** Affects: nova
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/2043030

Title:
  Flavors with trait:HW_CPU_X86_VMX='required' are not working properly

Status in OpenStack Compute (nova):
  New

Bug description:
  I'm having trouble with Flavor which have
  trait:HW_CPU_X86_VMX='required' as a requirement.

  I've checked the code and get_flags_by_flavor_specs at https://opendev.org/openstack/nova/src/commit/b64ecb0cc776bd3eced674b0f879bb23c8a4b486/nova/virt/libvirt/utils.py#L656 is expecting that each key in TRAITS_CPU_MAPPING is a string but as you can see HW_CPU_X86_VMX is actually part of a tuple (os_traits.HW_CPU_X86_VMX, os_traits.HW_CPU_X86_INTEL_VMX).
  and get_flags_by_flavor_specs fails to extract vmx flag from flavors properly.

  I've been experiencing this issue on Antelope and based on current
  state of master it's still out there.

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