The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 25, 2020
Filed:
Mar. 22, 2018
Huawei Technologies Co., Ltd., Shenzhen, CN;
Yu Zeng, Shenzhen, CN;
Huawei Technologies Co., Ltd., Shenzhen, CN;
Abstract
Embodiments of the present invention relate to the data storage field, and provide a metadata recovery method and apparatus that are applied to a storage array. The method includes: when first mapping data is intact and second mapping data is corrupted, reading each second logical block in a granularity of a size of a third logical block; obtaining logical address blocks LBA stored in granular data, to obtain an LBA range corresponding to each segment of granular data; determining, by using a correspondence between LBA ranges and identifiers of third logical blocks, an identifier of a third logical block corresponding to the LBA range of each segment of granular data; and generating, when metadata that includes the determined identifier of the third logical block does not exist in the second mapping data, metadata that includes the identifier of the third logical block.