Open Stack

 Thank you very much both Erik and Bernd.

 Indeed the problem was with the image file version.

 Although "qemu-img convert -O qcow2 <image> <new-image>" didn't work I 
 have re-created using a new QCOW image and that could be used without a 
 problem.

 Thanks you once again for pointing me to the correct direction.

 Best regards,

 G.


> The problem is not the qemu version, but the image file version. More
> recently, qcow3 seems to be used; Icehouse probably uses qcow2.
>
> I think you have a number of options.
>
> The easiest approach might be converting the image to qcow2:
>
> 
> https://ask.openstack.org/en/question/84506/how-to-convert-qcow3-image-to-qcow2/
>
> Or convert it to raw. Main inconvenience is the increased size.
>
> Or create a volume from the image, and on the destination system,
> boot from the volume and snapshot the instance to create an image
> again.
>
> -----Original Message-----
> From: Georgios Dimitrakakis [mailto:giorgis at acmac.uoc.gr]
> Sent: Thursday, February 15, 2018 7:28 AM
> To: Openstack <openstack at lists.openstack.org>
> Subject: [Openstack] qemu version for OpenStack Icehouse
>
>  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,
>
>  G.
>
>
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