Backup Repository Recovery Point Deletion Without Data Relocation
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Solution Overview
Problem
Existing data backup methods require inefficient data merging and relocation when deleting a recovery point, leading to increased resource usage and inefficiency.
Innovation Solution
A method and apparatus for deleting recovery points by determining target data to be deleted based on backup indexes of the target, preceding, and subsequent recovery points, without data relocation or merging, thereby optimizing resource usage and efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If data merging and relocation are performed when deleting a recovery point, then subsequent recovery points can continue to be used, but computing resources and storage space are occupied and efficiency is reduced
Solution Approach 1:
The patent extracts and deletes only the specific data blocks and metadata associated with the target recovery point, rather than performing comprehensive data merging and relocation. By identifying and removing only the necessary components (data blocks referenced exclusively by the target recovery point and its backup index), the system maintains deletion efficiency while ensuring subsequent recovery points remain usable.
2Reliability
If data merging and relocation are performed when deleting a recovery point, then subsequent recovery points can continue to be used, but more metadata is maintained and computer resources are consumed
Solution Approach 1:
The patent extracts and removes only the backup index and data blocks specifically associated with the target recovery point. The backup index, which contains metadata mapping recovery points to data blocks, is deleted entirely for the target recovery point, and only the data blocks that are not referenced by any other recovery point are removed. This approach minimizes metadata maintenance complexity while preserving the integrity of subsequent recovery points.
3Ease of operation
If soft deletion and periodic garbage collection are performed, then recovery points can be deleted without immediate data relocation, but computing resources are still consumed and efficiency is reduced
Solution Approach 1:
The patent performs preliminary identification of data blocks and metadata that can be safely deleted immediately when a recovery point is deleted. By analyzing the backup index to determine which data blocks are referenced exclusively by the target recovery point, the system enables immediate deletion without requiring periodic garbage collection or soft deletion mechanisms, thus reducing computing resource consumption while maintaining operational simplicity.
Data Source
AI summary
A data backup method, a medium and an electronic device are provided. The data backup method includes: generating a recovery point deletion task, where the recovery point deletion task is used to instruct to delete a target recovery point in a backup repository, and the backup repository is used to manage backup data and backup indexes corresponding to respective recovery points; and delivering the recovery point deletion task to a backup work service node, and instructing the backup work service node to determine first target data to be deleted according to a first backup index corresponding to the target recovery point, a second backup index corresponding to a preceding recovery point of the target recovery point, and a third backup index corresponding to a subsequent recovery point of the target recovery point, and delete the first target data and the first backup index from the backup repository.