ubuntu kvm upgrade failure

[Edward Hope-Morley]

I currently get the following failure when upgrading from havana cloud archive to icehouse-staging cloud archive:

ubuntu@devstack:~$ dpkg -l| grep kvm
ii qemu-kvm 1.7.0+dfsg-3ubuntu6~cloud0 QEMU Full virtualization on x86 hardware (transitional package)
ubuntu@devstack:~$ sudo apt-get install kvm
Reading package lists... Done
Building dependency tree
Reading state information... Done
Some packages could not be installed. This may mean that you have
requested an impossible situation or if you are using the unstable
distribution that some required packages have not yet been created
or been moved out of Incoming.
The following information may help to resolve the situation:

The following packages have unmet dependencies.
 kvm : Depends: qemu-kvm
E: Unable to correct problems, you have held broken packages.

[Serge Hallyn (serge-hallyn)]

Please append the sanitized /var/log/apt/term.log.

[Serge Hallyn (serge-hallyn)]

A do-release-upgrade -d from saucy with kvm installed succeeded fine here. (I was not using the cloud archive however).

[Serge Hallyn (serge-hallyn)]

Please also show 'apt-cache show qemu-kvm' and 'dpkg -l | grep qemu'.

[James Page (james-page)]

Hi Ed

I tried to reproduce this by dist-upgrade'ing a havana compute node to icehouse and although I see the same error post upgrade, the kvm package is just a transitional package so it not require for the operation of the system post upgrade AFAICT.

You can see why it gets un-installed:

Conflicts: kvm (<< 1:84+dfsg-0ubuntu16+0.11.0), kvm-data, qemu (<< 0.11.0-0ubuntu5)

(from qemu-kvm in icehouse CA).

[Edward Hope-Morley (hopem)]

Sorry for terse description above. I hit this issue on 12.04.1 while running a devstack update and having the icehouse-staging Cloud Archive PPA installed. It sounds like the real problem is that devstack has always tried to install the kvm package where it should have been installing the qemu-kvm package. It did not used to fail as the kvm package was until now a meta ref to qemu-kvm hence why the dep now breaks. I am going to raise a bug on devstack instead to get this fixed.

[Edward Hope-Morley (hopem)]

For ref: https://bugs.launchpad.net/devstack/+bug/1294557