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setup_rw_layer() {
if isempty VM_DISKFILE_RO; then
writelog "No source diskfile found! This should be specified in the given XML file. Is it valid?"
EXIT_TYPE="user" EXIT_REASON="Keine virtuelle Festplatte zu dieser Veranstaltung angegeben!" cleanexit 1
fi
# setup qcow2 backing file for that disk file
writelog "Creating backing file for '${VM_DISKFILE_RO}'..."
# TODO: WTF? This is fucked up, VM_DISKFILE_RW is set if we want to run in persistent mode,
# this plugin shouldn't mess around with it....
declare -rg VM_DISKFILE_RW="${TMPDIR}/$(basename ${VM_DISKFILE_RO}).qcow2"
if qemu-img create -f qcow2 -b "${VM_DISKFILE_RO}" "${VM_DISKFILE_RW}"; then
# all good, use it as main disk drive
# TODO: determine the proper type of controller to use, ideally virtio?
VIRTCMDOPTS+=("-drive" "if=virtio,format=qcow2,file=${VM_DISKFILE_RW}" )
else
writelog "Error creating backing file for '${VM_DISKFILE_RO}'"
# TODO use -snapshot as fallback, test it!
# How is this supposed to even work without a disk?
VIRTCMDOPTS+=( "-snapshot" )
fi
}
call_post_source setup_rw_layer
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