Disk passthrough XML is out of date
I added a disk using virt-manager's GUI, and the resulting XML looks like this:
<disk type="block" device="disk">
<driver name="qemu" type="raw" cache="none" io="native" discard="unmap"/>
<source dev="/dev/sdd1"/>
<target dev="vdb" bus="virtio"/>
<boot order="1"/>
<address type="pci" domain="0x0000" bus="0x0b" slot="0x00" function="0x0"/>
</disk>
The main difference is the address type. Using address type="drive" is incompatible with bus="virtio"
Edited by molohov