Virtual Machine Snapshot Consistency Analysis via Backup Logs
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Solution Overview
Problem
Current methods lack a unified and efficient way to determine the consistency level of virtual machine snapshots, leading to potential errors in data recovery and operation failures, especially in virtual machine software like VMware where snapshot consistency levels cannot be accurately judged across different versions.
Innovation Solution
A method involving the use of backup log files to determine the consistency level of virtual machine snapshots by analyzing log information related to the generation of the snapshot, categorizing consistency levels into failure, file, and application levels, and further subdividing file consistency levels based on error counts, ensuring accurate snapshot selection and subsequent operations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional snapshot methods are used in virtual machine backup systems, then backup operations can be performed, but the consistency level between the snapshot state and actual virtual machine state cannot be accurately determined
Solution Approach 1:
The patent introduces a backup log file as an intermediary element that records the generation process of virtual machine snapshots. By analyzing this log file, the system can determine the consistency level of snapshots without directly accessing the virtual machine state, thus resolving the contradiction between measurement precision and reliability.
Solution Approach 2:
The system implements a feedback mechanism where the backup log file provides information about the snapshot generation process. This feedback enables the system to assess whether the snapshot accurately reflects the virtual machine state at the time of backup, improving both consistency determination accuracy and data recovery reliability.
2Adaptability or versatility
If virtual machine snapshots are taken for backup, then data can be captured for recovery, but there is no unified method to assess the matching degree between snapshot state and actual state across different virtual machine software versions
Solution Approach 1:
The patent creates a universal backup log file format and analysis method that works across different virtual machine software versions. The backup log file serves multiple functions: recording snapshot generation details, enabling consistency assessment, and providing recovery information. This universal approach allows the same methodology to be applied regardless of the specific virtual machine software being used.
Data Source
AI summary
Embodiments of the present disclosure relate to a method, device and computer program product for determining a consistency level of a virtual machine snapshot. The method comprises obtaining a backup log file of the virtual machine snapshot generated in a virtual machine backup process, the backup log file comprising log information related to the generation of the virtual machine snapshot. The method further comprises determining the consistency level of the virtual machine snapshot based on the backup log file, the consistency level indicating a matching degree between a state of a virtual machine represented by the virtual machine snapshot and an actual state of the virtual machine when the virtual machine snapshot is generated.