METHOD AND SYSTEM FOR IMPLEMENTING HIGH YIELD DE-DUPLICATION FOR COMPUTING APPLICATIONS
First Claim
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1. A method for performing de-duplication, comprising:
- generating a non-deduplication reference count for a fingerprint;
generating a de-duplication reference count for the fingerprint;
computing scores for a plurality of extents from the non-deduplication reference count and the de-duplication reference count;
ordering the plurality of extents from the scores to generate an ordered list of extents; and
selecting at least some of the plurality of extents from the ordered list of the extents for de-duplication.
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Abstract
Disclosed is an improved approach for implementing de-duplication, by selecting data such that the de-duplication efficacy of the storage will be increased without arbitrarily increasing metadata size.
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Citations
30 Claims
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1. A method for performing de-duplication, comprising:
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generating a non-deduplication reference count for a fingerprint; generating a de-duplication reference count for the fingerprint; computing scores for a plurality of extents from the non-deduplication reference count and the de-duplication reference count; ordering the plurality of extents from the scores to generate an ordered list of extents; and selecting at least some of the plurality of extents from the ordered list of the extents for de-duplication. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A computer program product embodied on a computer usable medium, the computer readable medium having stored thereon a sequence of instructions which, when executed by a processor causes the processor to execute a method for performing de-duplication, the method comprising:
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generating a non-deduplication reference count for a fingerprint; generating a de-duplication reference count for the fingerprint; computing scores for a plurality of extents from the non-deduplication reference count and the de-duplication reference count; ordering the plurality of extents from the scores to generate an ordered list of extents; and selecting at least some of the plurality of extents from the ordered list of the extents for de-duplication. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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21. A system for performing de-duplication, comprising:
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a processor to handle computing instructions to access the storage devices; and computer readable medium comprising executable code that is executable by the processor for generating a non-deduplication reference count for a fingerprint, generating a de-duplication reference count for the fingerprint, computing scores for a plurality of extents from the non-deduplication reference count and the de-duplication reference count, ordering the plurality of extents from the scores to generate an ordered list of extents, and selecting at least some of the plurality of extents from the ordered list of the extents for de-duplication. - View Dependent Claims (22, 23, 24, 25, 26, 27, 28, 29, 30)
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Specification