[–] geertj 12y ago ↗ Author here. Actually it is using double nested virtualization. So there's 4 levels involved:* Amazon runs Xen (bare metal OS)* We run our hypervisor on top of Amazon (first level guest)* Customer runs OpenStack compute node (second level guest, first level of nested).* Instance runs on Openstack (third level guest, second level nesting)
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[ 2.9 ms ] story [ 10.1 ms ] thread* Amazon runs Xen (bare metal OS)
* We run our hypervisor on top of Amazon (first level guest)
* Customer runs OpenStack compute node (second level guest, first level of nested).
* Instance runs on Openstack (third level guest, second level nesting)