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How to override default disk dev type of vda?

I want to run fully virtualized VM (which doesn't have virtio driver) using openstack and would like to know the nova/glance api interface to overide the default of "vda" for disk dev type and set it to "hda" as below:

<disk type="file" device="disk"> <source file="..."/> <target bus="ide" dev="hda"> </disk>

I see following facility for overiding default disk bus type, but not for disk dev type. glance image-update --property hw_disk_bus=ide <vm_image>