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[Lee Yarwood <1831538@xxxxxxxxxxxxxxxxxx>]

** Changed in: nova/stein
       Status: Fix Committed => Fix Released

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https://bugs.launchpad.net/bugs/1831538

Title:
  IDE config drive CDROM doesn't work with q35 machine type

Status in OpenStack Compute (nova):
  Fix Released
Status in OpenStack Compute (nova) stein series:
  Fix Released

Bug description:
  Description
  ===========

  Setting [libvirt]/hw_machine_type=x86_64=q35 in nova-cpu.conf results
  in any instances booted with a config drive to fail to spawn.

  Steps to reproduce
  ==================

  1. Set [libvirt]/hw_machine_type=x86_64=q35 in nova-cpu.conf
  2. Boot an instance with a config drive

  Expected result
  ===============

  Instance boots correctly.

  Actual result
  =============

  Instance fails to spawn with following error in the compute log:

  libvirt.libvirtError: unsupported configuration: IDE controllers are
  unsupported for this QEMU binary or machine type

  Environment
  ===========

  This was reported on OSP15 CI [1] and has been reproduced upstream
  [2].

  [1] https://bugzilla.redhat.com/show_bug.cgi?id=1716358
  [2] https://review.opendev.org/#/c/662887/

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