METHOD, DEVICE, AND COMPUTER READABLE STORAGE MEDIUM FOR MANAGING STORAGE SYSTEM
First Claim
1. A method of managing a storage system, comprising:
- determining, for each of a plurality of snapshots, a plurality of blocks referenced by the snapshot;
determining an evaluation score indicating an impact that deletion of the snapshot has on space release and data retention based on at least one of;
a reference count for the plurality of blocks, a size of a storage resource associated with the snapshot, and the number of blocks of the plurality of blocks that are referenced only once; and
selecting at least one snapshot to be deleted from the plurality of snapshots based on respective evaluation scores of the plurality of snapshots.
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Accused Products
Abstract
Techniques involve managing a storage system. Along these lines, for each of a plurality of snapshots, a plurality of blocks referenced by the snapshot is determined. An evaluation score indicating an impact that deletion of the snapshot has on space release and data retention is determined based on at least one of: a reference count for the plurality of blocks, a size of a storage resource associated with the snapshot, and the number of blocks of the plurality of blocks that are referenced only once. At least one snapshot to be deleted is selected from the plurality of snapshots based on respective evaluation scores of the plurality of snapshots.
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Citations
11 Claims
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1. A method of managing a storage system, comprising:
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determining, for each of a plurality of snapshots, a plurality of blocks referenced by the snapshot; determining an evaluation score indicating an impact that deletion of the snapshot has on space release and data retention based on at least one of;
a reference count for the plurality of blocks, a size of a storage resource associated with the snapshot, and the number of blocks of the plurality of blocks that are referenced only once; andselecting at least one snapshot to be deleted from the plurality of snapshots based on respective evaluation scores of the plurality of snapshots. - View Dependent Claims (2, 3, 4, 5)
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6. A device for managing a storage system, comprising:
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a processing unit; a memory coupled to the processing unit and comprising instructions stored thereon, the instructions, when executed by the processing unit, causing the apparatus to perform acts comprising; determining, for each of a plurality of snapshots, a plurality of blocks referenced by the snapshot; determining an evaluation score indicating an impact that deletion of the snapshot has on space release and data retention based on at least one of;
a reference count for the plurality of blocks, a size of a storage resource associated with the snapshot, and the number of blocks of the plurality of blocks that are referenced only once; andselecting at least one snapshot to be deleted from the plurality of snapshots based on respective evaluation scores of the plurality of snapshots. The device of claim 6, wherein determining the plurality of blocks comprises sampling the snapshot to determine the plurality of blocks. - View Dependent Claims (8, 9, 10)
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11. A computer program product having a non-transitory computer readable medium which stores a set of instructions to manage a storage system;
- the set of instructions, when carried out by computerized circuitry, causing the computerized circuitry to perform a method of;
determining, for each of a plurality of snapshots, a plurality of blocks referenced by the snapshot; determining an evaluation score indicating an impact that deletion of the snapshot has on space release and data retention based on at least one of;
a reference count for the plurality of blocks, a size of a storage resource associated with the snapshot, and the number of blocks of the plurality of blocks that are referenced only once; andselecting at least one snapshot to be deleted from the plurality of snapshots based on respective evaluation scores of the plurality of snapshots.
- the set of instructions, when carried out by computerized circuitry, causing the computerized circuitry to perform a method of;
Specification