nova/placement-api-ref/source/get-allocations.json

{
    "allocations": {
        "92637880-2d79-43c6-afab-d860886c6391": {
            "generation": 2,
            "resources": {
                "DISK_GB": 5
            }
        },
        "ba8e1ef8-7fa3-41a4-9bb4-d7cb2019899b": {
            "generation": 8,
            "resources": {
                "MEMORY_MB": 512,
                "VCPU": 2
            }
        }
    }
}