Exporting an lxd vm to virt-manager
Thank goodness I work with @Teaton . The missing piece is in the firmware which is also in the exported tar.
# lxc export isg-mon-02 -v --compression gzip --instance-only isg-lxd-vm.tgz
# tar -xzvf isg-lxd-vm.tgz backup/virtual-machine.img
# qemu-img convert -f raw -O qcow2 backup/virtual-machine.img /var/lib/libvirt/images/isg-mon-02.qcow2
# tar -xzvf isg-lxd-vm.tgz backup/virtual-machine/qemu.nvram
# cp backup/virtual-machine/qemu.nvram /var/lib/libvirt/qemu/nvram/isg-mon-02.nvram
Then use virt-manager to create a new kvm and adjust the new disk and qemu/nvram settings
# virsh edit isg-mon-02
..... blah blahh .....
<os>
<type arch='x86_64' machine='pc-i440fx-2.9'>hvm</type>
<loader readonly='yes' type='pflash'>/usr/share/OVMF/OVMF_CODE.fd</loader>
<nvram>/var/lib/libvirt/qemu/nvram/isg-mon-02.nvram</nvram>
<boot dev='hd'/>
</os>
..... more stuff .....
<devices>
<emulator>/usr/bin/qemu-system-x86_64</emulator>
<disk type='file' device='disk'>
<driver name='qemu' type='qcow2'/>
<source file='/var/lib/libvirt/images/isg-mon-02.qcow2' index='1'/>
<backingStore/>
<target dev='vda' bus='virtio'/>
<alias name='virtio-disk0'/>
</disk>
....
virsh start isg-mon-02 --console
And that’s it. (aside from a bunch of other minor os adjustments).