2010/8/15 Mike Hinz <mike.hinz@yr20.com>:
Without actually thoroughly thinking about it, I updated my system yesterday with the latest qemu-kvm. rpm -qa shows
qemu-kvm-0.13.0-0.5.20100809git25fdf4a.fc13.x86_64
See also:
virsh # version Compiled against library: libvir 0.8.2 Using library: libvir 0.8.2 Using API: QEMU 0.8.2 Running hypervisor: QEMU 0.13.50
Now when I attempt to start a domain that was working perfectly well prior to this update, I get the following:
virsh # start winxp1 error: Failed to start domain winxp1 error: internal error Process exited while reading console log output: Supported machines are: pc Standard PC (alias of pc-0.13) pc-0.13 Standard PC (default) pc-0.12 Standard PC pc-0.11 Standard PC, qemu 0.11 pc-0.10 Standard PC, qemu 0.10 isapc ISA-only PC
Virt-Manager throws the same error when attempt to start an existing domain.
I'm assuming that there's now some sort of compatibility issue between the current versions of libvirt/virt-manager and qemu-kvm?
I think this is a machine type compatibility issue between your previous and current QEMU version. See 'virsh dumpxml winxp1' for a line like this: <os> <type arch='i686' machine='pc'>hvm</type> </os> The machine attribute will probably have a value that your current QEMU doesn't understand anymore. Therefore, it complains about the machine type and list the ones it understands.
Is there a way to get around this and somehow use my existing domains with this updated version of qemu-kvm?
You can try to 'virsh edit winxp1' and replace the value of the machine attribute with something your current QEMU understands, e.g. 'pc-0.13'.
Interestingly, just out of curiosity, I've started a new installation of a WinXP vm. This seems to be going perfectly well so far, so I assume that the issue is only with domains previously created with the older version of qemu??
If you define a new guest then libvirt (actually virt-install called from virt-manager) will pick a machine type that your current QEMU understands. Therefore, a newly defined guest works. Matthias