glance/api-ref/source/v2/samples/stores-list-response.json

{
    "stores": [
        {
            "id":"reliable",
            "description": "Reliable filesystem store"
        },
        {
            "id":"fast",
            "description": "Fast access to rbd store",
            "default": true
        },
        {
            "id":"cheap",
            "description": "Less expensive rbd store"
        }
    ]
}