Data Structure Signature Verification for Workload Mobility
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Solution Overview
Problem
Ensuring data structure consistency across different computing environments is challenging, particularly during application or workload migration, as changes in nested data structures between operating system versions can impact mobility and interpretation.
Innovation Solution
A method that generates signatures for data structures in one computing environment and compares them with signatures from another environment, using debugging information to identify and expand nested data structure elements, enabling detection of inconsistencies and ensuring compatibility across different operating system versions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If application migration between different operating system versions is enabled, then workload mobility is improved, but data structure consistency and interpretation reliability deteriorate due to nested data structure changes
Solution Approach 1:
The patent applies preliminary action by computing signatures for nested data structures before migration occurs. The system generates signatures for data structures in the source computing environment and stores them for later comparison with signatures from the destination environment, enabling detection of structural changes before they cause migration failures.
Solution Approach 2:
The patent introduces an intermediary mechanism in the form of a signature comparison system that mediates between the source and destination computing environments. This intermediary verifies data structure compatibility by comparing signatures without requiring direct modification of the data structures themselves, thus enabling safe migration across different operating system versions.
2Measurement precision
If nested data structure elements are expanded for verification, then measurement precision of data structure consistency is improved, but device complexity increases due to additional debugging information processing
Solution Approach 1:
The patent extracts only the essential information needed for verification by computing signatures of nested data structures. Rather than processing entire complex data structures, the system extracts and compares signature representations that capture the structural essence, reducing processing complexity while maintaining verification precision.
Solution Approach 2:
The patent creates a simplified copy representation of data structures through signature computation. The signatures serve as condensed copies that represent the structural characteristics of nested data structures, enabling verification without manipulating the full complex data structures themselves.
Data Source
AI summary
A technique for verifying data structure consistency across computing environments includes computing a first signature for a data structure of an application subject to checkpointing corresponding to a first computing environment residing on a first computer. A second signature for the data structure of the application corresponding to a second computing environment residing on a second computer is computed. The first and second signatures are compared to determine whether a change to the data structure exists. Responsive to a lack of change to the data structure based on the comparison, a mobility operation is enabled for the application between the first computer and the second computer.