Nested Containers for Virtual Machine Resource Isolation
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Solution Overview
Problem
Nested virtualization in computer systems incurs performance overhead due to the processing resources required for handling interrupts and exceptions across virtual machine levels, which affects the efficiency of virtual machine execution.
Innovation Solution
Implementing a system that allows a hypervisor to run a Level 1 VM within a Level 1 container and create nested containers to execute Level 2 VMs, limiting their resources to a subset of the Level 1 container's resources, thereby reducing overhead and improving performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If nested virtualization is implemented with traditional hypervisor architecture, then virtual machine isolation and resource management are achieved, but performance overhead increases due to interrupt and exception handling across multiple virtualization levels
Solution Approach 1:
The patent implements nested containers within containers, where a parent container can contain child containers, creating a hierarchical structure similar to nested dolls. This nesting approach allows multiple isolation levels to be achieved without adding proportional virtualization overhead, as the nested structure shares the same container runtime environment rather than requiring separate hypervisor instances at each level.
2Adaptability or versatility
If traditional nested virtualization is used, then multiple virtual machine levels can be supported, but processing resources are consumed for handling interrupts and exceptions at each virtualization layer
Solution Approach 1:
The patent merges multiple virtualization functions into a unified container runtime environment. Instead of having separate hypervisor instances at each virtualization level that would independently handle interrupts and exceptions, the nested container architecture consolidates these handling mechanisms at the parent container level, reducing redundant processing resource consumption while maintaining multi-level VM support.
3Reliability
If full virtualization is implemented for each virtual machine level, then complete hardware abstraction is achieved, but hardware utilization efficiency decreases due to repeated abstraction layers
Solution Approach 1:
The patent extracts the essential virtualization functionality from traditional hypervisors and implements it at the operating system level through containers. By taking out the full hardware abstraction layer and replacing it with OS-level containerization, the system maintains sufficient isolation and resource management capabilities while eliminating redundant abstraction layers, thereby improving hardware utilization efficiency.
Data Source
AI summary
System and method for running virtual machines within containers. An example method may include: running, by a host computer system, a hypervisor managing a first virtual machine implemented by a first container with a first set of resources, creating, by the hypervisor, a second container implementing the second virtual machine, wherein the second container is nested within the first container, determining, by the first virtual machine of the first container, one or more of the first set of resources to assign to the second container, and assigning, by the hypervisor, to the second container one or more of the first set of resources.