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From rhtyd <>
Subject [GitHub] cloudstack issue #1542: CLOUDSTACK-9379: Support nested virtualization at VM...
Date Wed, 28 Sep 2016 07:13:29 GMT
Github user rhtyd commented on the issue:
    @jburwell nested VM is something tricky to test, we can support this as a subtle feature
but not a generally supported one. In our test/trillian environment, we're already running
nested virtualization. I'm not sure investing time on inception of a test environment is useful.
The feature is specific to vmware, I don't understand why KVM needs to be involved.
    A quick test could be to run a guest VM on VMware with specific cpu flags (say vmx, smx,
ht) and verify that the VM launched with these flags have the cpu features for example, the
test could do: (1)ssh into the vm, (2) cat /proc/cpuinfo and (3) grep `flags` for specific
cpu flags such as vmx, ht etc. I think such a test should work with the default centos template
or with macchanina.
    The feature could also be written and tested in such a way to add `any` key/value details
on a VM and be interpreted by the hypervisor specific resource.

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