[CLOUDSTACK-9379] Support nested virtualization at VM level on VMware Hypervisor

• Type: Improvement
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 4.9.0
• Fix Version/s: 4.10.0.0
• Component/s: VMware
• Security Level: Public (Anyone can view this level - this is the default.)
• Assignee: Nicolas Vazquez
• Reporter: Nicolas Vazquez
• Created: 12/May/16 20:10
• Updated: 08/Feb/17 14:08
• Resolved: 08/Feb/17 14:08

Description

Introduction

It is desired to support nested virtualization at VM level for VMware hypervisor. Current behaviour supports enabling/desabling global nested virtualization by modifying global config 'vmware.nested.virtualization'. It is wished to improve this feature, having control at VM level instead of a global control only.

Proposal

A new global configuration is added, to enable/disable VM nested virtualization control: 'vmware.nested.virtualization.perVM'. Default value=false

Behaviour

After a vm deployment or start command, vm params include nestedVirtualizationFlag key and its value is:

• true -> nested virtualization enabled
• false -> nested virtualization disabled

We will determinate nested virtualization enabled/disabled by examining:

• (1) global configuration 'vmware.nested.virtualization' value
• (2) global configuration 'vmware.nested.virtualization.perVM' value
• (3) 'nestedVirtualizationFlag' value in user_vm_details if present, null if not.

Using this 3 values, there are different use cases:

1. (1) = TRUE, (2) = TRUE, (3) is null -> ENABLED
2. (1) = TRUE, (2) = TRUE, (3) = TRUE -> ENABLED
3. (1) = TRUE, (2) = TRUE, (3) = FALSE -> DISABLED
4. (1) = TRUE, (2) = FALSE -> ENABLED
5. (1) = FALSE, (2) = TRUE, (3) is null -> DISABLED
6. (1) = FALSE, (2) = TRUE, (3) = TRUE -> ENABLED
7. (1) = FALSE, (2) = TRUE, (3) = FALSE -> DISABLED
8. (1) = FALSE, (2) = FALSE -> DISABLED

Issue Links

• links to: GitHub Pull Request #1542