/etc/glance/metadefs/compute-guest-memory-backing.json is in glance-api 2:12.0.0-0ubuntu2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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"namespace": "OS::Compute::GuestMemoryBacking",
"display_name": "Guest Memory Backing",
"description": "This provides the preferred backing option for guest RAM. Guest's memory can be backed by hugepages to limit TLB lookups. See also: https://wiki.openstack.org/wiki/VirtDriverGuestCPUMemoryPlacement",
"visibility": "public",
"protected": true,
"resource_type_associations": [
{
"name": "OS::Nova::Flavor",
"prefix": "hw:"
},
{
"name": "OS::Glance::Image",
"prefix": "hw_"
},
{
"name": "OS::Cinder::Volume",
"prefix": "hw_",
"properties_target": "image"
}
],
"properties": {
"mem_page_size": {
"title": "Size of memory page",
"description": "Page size to be used for Guest memory backing. Value can be specified as <number><unit> (i.e.: 2MB, 1GB) or 'any', 'small', 'large'. If this property is set in Image metadata then only 'any' and 'large' values are accepted in Flavor metadata by Nova API.",
"type": "string"
}
}
}
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