Title:
DATA DEDUPLICATION METHOD AND SYSTEM, AND STORAGE MEDIUM AND DEVICE
Document Type and Number:
WIPO Patent Application WO/2023/040200
Kind Code:
A1
Abstract:
Provided in the present application are a data deduplication method and system, and a storage medium and a device. The method comprises: in response to a host abandoning a data deduplication operation and writing, into a hard disk, data taking granularity as a unit, calculating a fingerprint value of the data, writing the fingerprint value and a logical address thereof into the hard disk, and determining whether a storage space occupied in the hard disk reaches a preset threshold value; if the preset threshold value is reached, acquiring unit data from the hard disk, and determining whether a deduplication operation has been performed on the unit data; if the deduplication operation has not been performed, acquiring the fingerprint value of the unit data, and querying, by means of a metadata management module, whether there is original metadata which includes an original physical address which has a mapping relationship with the fingerprint value of the unit data; and if so, establishing first metadata which includes the mapping relationship between the original physical address and the fingerprint value of the unit data, and storing the first metadata in the metadata management module for the deduplication operation performed on the unit data.
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Inventors:
GANG YAZHOU (CN)
Application Number:
PCT/CN2022/078324
Publication Date:
March 23, 2023
Filing Date:
February 28, 2022
Export Citation:
Assignee:
INSPUR SUZHOU INTELLIGENT TECHNOLOGY CO LTD (CN)
International Classes:
G06F16/215
Foreign References:
| CN113535708A | 2021-10-22 | |||
| CN107122130A | 2017-09-01 | |||
| CN110727404A | 2020-01-24 | |||
| CN106527973A | 2017-03-22 | |||
| CN106339444A | 2017-01-18 | |||
| CN110795031A | 2020-02-14 |
Attorney, Agent or Firm:
BEIJING WANHUIDA LAW FIRM (CN)
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