Dear all,

I am trying to build a Windows image on a rather new Ubuntu system which image would be imported and used on an old OpenStack Icehouse installation.

The system on which I am building it has the following characteristics:

Distributor ID: Ubuntu
Description:    Ubuntu 16.04.3 LTS
Release:        16.04
Codename:       xenial
Kernel:         4.4.0-112-generic

and the installed QEMU packages are:

ii qemu-block-extra:amd64 1:2.5+dfsg-5ubuntu10.20 amd64 extra block backend modules for qemu-system and qemu-utils ii qemu-kvm 1:2.5+dfsg-5ubuntu10.20 amd64 QEMU Full virtualization ii qemu-system-common 1:2.5+dfsg-5ubuntu10.20 amd64 QEMU full system emulation binaries (common files) ii qemu-system-x86 1:2.5+dfsg-5ubuntu10.20 amd64 QEMU full system emulation binaries (x86) ii qemu-utils 1:2.5+dfsg-5ubuntu10.20 amd64 QEMU utilities

The error that I am getting whey I try to launch the VM is the following:

'ProcessExecutionError: Unexpected error while running command.\nCommand: env LC_ALL=C LANG=C qemu-img info /var/lib/nova/instances/_base/ae8e48565dd0b934afe98a17febc0660077d7e35.part\nExit code: 1\nStdout: \'\'\nStderr: "\'image\' uses a qcow2 feature which is not supported by this qemu version: QCOW version 3\\nCould not open \'/var/lib/nova/instances/_base/ae8e48565dd0b934afe98a17febc0660077d7e35.part\': Operation not supported\\n"\n'

Using the same image on a newer OpenStack Ocata installation works fine and the VM boots up and works without a problem.

Obviously there is a version mismatch and something on this image is not supported by OpenStack Icehouse.

Do you know where the problem could be? Is there a way to build it with backwards compatibility or can someone point out to me the latest versions that would work with OpenStack Icehouse?

Unfortunately for the moment it's not possible to upgrade OpenStack. We will in the next few months but for the moment is important to have it working.

Looking forward for your answers!

Best regards,


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