Container Overlay Removal Preserving User Modifications
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Solution Overview
Problem
In computing environments, there is a challenge in preserving modifications made to a computer system's internal state after an overlay is applied and then removed, particularly in containerized systems where debugging or troubleshooting tools are not inherently included, leading to inefficiencies in troubleshooting and potential data loss.
Innovation Solution
A method and system that apply an overlay to a container with debugging or troubleshooting tools, allowing modifications to be made, and then remove the overlay while preserving the internal state changes, ensuring that the system returns to a stable state without losing user-induced modifications.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If an overlay is applied to a container to add debugging or troubleshooting tools, then the container gains additional functionality for troubleshooting, but the container's original stable state may be altered and modifications made during overlay application may be lost when the overlay is removed
Solution Approach 1:
The system segments the container modifications into two distinct categories: overlay-induced modifications and user-induced modifications. By tracking the source of each modification, the system can selectively preserve only the user-induced changes while discarding overlay-related changes, thus maintaining state stability while preserving useful troubleshooting work.
Solution Approach 2:
The patent introduces an intermediary mechanism (the modification tracking system) that sits between the overlay application process and the container state. This intermediary tracks and categorizes modifications in real-time, enabling the system to distinguish between temporary overlay changes and permanent user changes, thereby resolving the contradiction between adding functionality and maintaining stability.
2Ease of operation
If debugging tools are included in every container, then troubleshooting can be performed independently, but the container size and complexity increase
Solution Approach 1:
Instead of including debugging tools in every container, the patent creates a universal overlay that can be applied to any container when needed. This overlay provides the necessary troubleshooting functionality across multiple containers without permanently modifying each individual container, thus maintaining container simplicity while enabling troubleshooting independence.
Solution Approach 2:
The debugging capability transitions from a static state (either included or not included in the container) to a dynamic state where tools can be applied and removed as needed. The overlay can be applied when troubleshooting is required and removed when not needed, allowing the system to adapt its complexity based on operational requirements.
3Ease of manufacture
If an overlay is removed after use, then the container returns to its original state, but any modifications made by the user during the overlay period are also lost
Solution Approach 1:
The system implements a feedback mechanism that continuously monitors modifications made to the container state. When the overlay is removed, this feedback information is used to identify and preserve user-induced modifications while excluding overlay-induced modifications, ensuring that useful work is not lost during the state recovery process.
Solution Approach 2:
The patent selectively discards overlay-induced modifications while recovering and preserving user-induced modifications during the overlay removal process. This selective discard and recover approach ensures that the container returns to a stable state without losing the valuable changes made by the user during the troubleshooting session.
Data Source
AI summary
An example method of preserving a modification to an internal state of a computer system includes applying an overlay on a target container. The overlay includes a set of events corresponding to a first set of modifications to a computer system. The method also includes after applying the overlay, receiving a set of user requests corresponding to a second set of modifications to the computer system. The method further includes changing, based on the set of user requests, the third set of internal states of the computer system to the fourth set of internal states. The method also includes removing the overlay from the target container, while preserving the second set of modifications to the computer system.