[Bug 1754015] Re: [SRU] nova-compute-kvm does not pull ipxe-qemu on non-amd64 archs

[Corey Bryant]

I've uploaded a new version of nova to the Artful review queue where it
is awaiting SRU team review [1]. Once it is accepted into artful-
proposed we can backport this to pike-proposed for testing.

[1] https://launchpad.net/ubuntu/artful/+queue?queue_state=1&queue_text=

** Changed in: cloud-archive/queens
       Status: Triaged => Fix Committed

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Title:
  [SRU] nova-compute-kvm does not pull ipxe-qemu on non-amd64 archs

Status in Ubuntu Cloud Archive:
  Fix Committed
Status in Ubuntu Cloud Archive pike series:
  Triaged
Status in Ubuntu Cloud Archive queens series:
  Fix Committed
Status in libvirt package in Ubuntu:
  Incomplete
Status in nova package in Ubuntu:
  Fix Released
Status in libvirt source package in Artful:
  New
Status in nova source package in Artful:
  Triaged
Status in libvirt source package in Bionic:
  Incomplete
Status in nova source package in Bionic:
  Fix Released

Bug description:
  [Impact]
  On Ubuntu installs where --no-recommends is enabled as the default, users of nova are unable to boot instances on non-x86 based architecures

  [Test Case]
  Deploy openstack using charms on amr64
  Boot instance
  Fails with error message from original bug report

  [Regression Potential]
  Minimal; ipxe-qemu is a Depends for x86, but this appears to be a legacy feature; nova will use libvirt in such a way that ipxe-qemu roms are needed on all architectures.

  [Original Bug Report]
  If you deploy a nova-compute unit on arm64 with openstack-origin='cloud:xenial-pike', ipxe-qemu does not get pulled, so nova fails to create instances because :

  2018-03-06 14:58:59.608 9770 ERROR nova.compute.manager [instance: 50a8ca28-d43c-4c36-8354-edea0138e7f1]     if ret == -1: raise libvirtError ('virDomainCreateWithFlags() failed', dom=self)
  2018-03-06 14:58:59.608 9770 ERROR nova.compute.manager [instance: 50a8ca28-d43c-4c36-8354-edea0138e7f1] libvirtError: internal error: process exited while connecting to monitor: 2018-03-06T14:58:58.689865Z qemu-system-aarch64: -device virtio-net-pci,netdev=hostnet0,id=net0,mac=fa:16:3e:12:80:f6,bus=pci.1,addr=0x0: failed to find romfile "efi-virtio.rom"

  (and efi-virtio.rom comes from ipxe-qemu)

  This is because of the Depends change on nova-compute-kvm :

  cloud-archive nova-compute-kvm has :
  Depends: nova-compute-libvirt (= 2:16.0.3-0ubuntu1~cloud0), qemu-kvm | qemu-system (>= 1.3.0) | kvm

  regular nova-compute-kvm has :
  Depends: nova-compute-libvirt (= 2:13.1.4-0ubuntu4.2), qemu-system (>= 1.3.0) | kvm

  and qemu-kvm only pulls qemu-system-arm, whereas qemu-system brings in
  all architectures, including qemu-system-x86, which pulls in ipxe-
  qemu.

  I guess one fix is to make qemu-system-arm64 depend on ipxe-qemu

  Thanks

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