[Bug 1819509] Re: qemu-kvm is not installed with nova-compute

[Aymen Frikha]

@Christian, thank you for the history.

@Corey, that should be ok for me now. The workaround I can use is to
install qemu-kvm package on all computes, so all computes will have same
emulator binary and they can be compatible for live-migration.

-- 
You received this bug notification because you are a member of Ubuntu
OpenStack, which is subscribed to nova in Ubuntu.
https://bugs.launchpad.net/bugs/1819509

Title:
  qemu-kvm is not installed with nova-compute

Status in nova package in Ubuntu:
  Invalid

Bug description:
  After upgrading compute nodes from mitaka to newton we are not able to migrate virtual machine.
  We are not able to migrate VMs from recently onboarded compute nodes to old compute nodes that has been upgraded to newton.
  Reason is:
  Xenial-mitaka nova-compute (2.13) depends on nova-compute-kvm which does not depend on qemu-kvm:
  Package: nova-compute-kvm
  Architecture: all
  Depends: nova-compute-libvirt (= ${binary:Version}),
           qemu-system (>= 1.3.0) | kvm,
           ${misc:Depends},

  
  Newton nova-compute (2.14) package depends on nova-compute-kvm which depends on qemu-kvm or qemu-system:

  Package: nova-compute-kvm
  Architecture: all
  Depends: nova-compute-libvirt (= ${binary:Version}),
           qemu-kvm | qemu-system (>= 1.3.0) | kvm,
           ${misc:Depends},

  
  When we install newton nova-compute from scratch on compute node  we have qmu-kvm package installed => all virtual machines created on this compute node are using kvm-spice emulator

  When we upgrade nova-compute package from Mitaka to Newton, we don't
  have qemu-kvm package installed  => all virtual machines created on
  this compute node are using qemu-system-x86_64 emulator.

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/nova/+bug/1819509/+subscriptions