-blockdev '{"node-name":"libvirt-6-format","read-only":false,"driver":"qcow2","file":"libvirt-6-storage"}' \
-device '{"driver":"virtio-blk-pci","bus":"pci.0","addr":"0x2","drive":"libvirt-6-format","id":"virtio-disk4","bootindex":1}' \
-add-fd set=4,fd=209,opaque=libvirt-5-storage0 \
--blockdev '{"driver":"file","filename":"/dev/fdset/4","node-name":"libvirt-5-storage","read-only":true}' \
+-blockdev '{"driver":"file","filename":"/dev/fdset/4","node-name":"libvirt-5-storage","read-only":false,"discard":"unmap"}' \
+-blockdev '{"node-name":"libvirt-5-format","read-only":true,"driver":"raw","file":"libvirt-5-storage"}' \
-add-fd set=3,fd=247,opaque=libvirt-4-storage0 \
-add-fd set=3,fd=248,opaque=libvirt-4-storage1 \
-blockdev '{"driver":"file","filename":"/dev/fdset/3","node-name":"libvirt-4-storage","auto-read-only":true,"discard":"unmap"}' \
--blockdev '{"node-name":"libvirt-4-format","read-only":true,"driver":"qcow2","file":"libvirt-4-storage","backing":"libvirt-5-storage"}' \
+-blockdev '{"node-name":"libvirt-4-format","read-only":true,"driver":"qcow2","file":"libvirt-4-storage","backing":"libvirt-5-format"}' \
-add-fd set=2,fd=204,opaque=libvirt-3-storage0 \
-blockdev '{"driver":"file","filename":"/dev/fdset/2","node-name":"libvirt-3-storage","read-only":false,"discard":"unmap"}' \
-blockdev '{"node-name":"libvirt-3-format","read-only":false,"driver":"qcow2","file":"libvirt-3-storage","backing":"libvirt-4-format"}' \
-blockdev '{"driver":"file","filename":"/dev/fdset/1","node-name":"libvirt-2-storage","read-only":true}' \
-device '{"driver":"ide-cd","bus":"ide.0","unit":0,"drive":"libvirt-2-storage","id":"ide0-0-0"}' \
-add-fd set=0,fd=208,opaque=libvirt-1-storage0 \
--blockdev '{"driver":"file","filename":"/dev/fdset/0","node-name":"libvirt-1-storage","read-only":true}' \
--device '{"driver":"ide-cd","bus":"ide.0","unit":1,"drive":"libvirt-1-storage","id":"ide0-0-1"}' \
+-blockdev '{"driver":"file","filename":"/dev/fdset/0","node-name":"libvirt-1-storage","read-only":false,"discard":"unmap"}' \
+-blockdev '{"node-name":"libvirt-1-format","read-only":true,"driver":"raw","file":"libvirt-1-storage"}' \
+-device '{"driver":"ide-cd","bus":"ide.0","unit":1,"drive":"libvirt-1-format","id":"ide0-0-1"}' \
-audiodev '{"id":"audio1","driver":"none"}' \
-device '{"driver":"virtio-balloon-pci","id":"balloon0","bus":"pci.0","addr":"0x4"}' \
-sandbox on,obsolete=deny,elevateprivileges=deny,spawn=deny,resourcecontrol=deny \