the problem is because of new version of qemu, the name of devices isn't ide0-0-, is drive-ide0-0-1. 2010/4/22 Jorge Alejandro Rodríguez <jrodriguez@dit.upm.es>

I can't attach a cd when a vm is running with qemu 0.12.3 (ubuntu 10.04), the problem is not with qemu because when I start the vm with kvm command (without libvirt) I can change the cd with qemu-monitor without any problem and eject it too (libvirt say me that it isn't supported by hypervisor).

the versions of libvirt that I have tried are 0.7.7 and 0.8.0.

Any ideas?

Thanks. Jorge