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Method, device and computer-readable storage medium for metadata reconstruction

A metadata and data technology, applied in the field of metadata reconstruction and computer-readable storage media, can solve the problems of low metadata reconstruction efficiency and long-term metadata, etc.

Active Publication Date: 2021-08-10
LANGCHAO ELECTRONIC INFORMATION IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this process needs to scan all metadata blocks, and it often takes a long time to complete the reconstruction of metadata, resulting in low efficiency of metadata reconstruction

Method used

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  • Method, device and computer-readable storage medium for metadata reconstruction
  • Method, device and computer-readable storage medium for metadata reconstruction
  • Method, device and computer-readable storage medium for metadata reconstruction

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Embodiment Construction

[0055] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0056]In order to enable those skilled in the art to better understand the solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0057] Next, a metadata reconstruction method provided by an embodiment of the present invention is introduced in detail. figure 1 It is a flow chart of a metadata reconstruction method provided by an...

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PUM

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Abstract

The embodiment of the present invention discloses a metadata reconstruction method, device, and computer-readable storage medium. Each type of metadata has at least one corresponding data block, and the metadata is downloaded to the corresponding data block; The metadata that has completed the power-off operation records its corresponding type identifier, and stores the type identifier and the type identifier corresponding to the metadata type that has not performed the power-off operation in the preset storage space; Whether the stored type identifiers cover all the type identifiers corresponding to the power-off operation; if not, scan the target data blocks corresponding to the uncovered type identifiers, and restore the metadata in each target data block to its corresponding storage Location. You only need to scan the data block corresponding to the missing type identifier at power-on to obtain the required metadata, which saves the scanning time for metadata recovery and improves the efficiency of metadata reconstruction.

Description

technical field [0001] The present invention relates to the technical field of storage systems, in particular to a metadata reconstruction method, device and computer-readable storage medium. Background technique [0002] A solid state drive (Solid State Drives, SSD) is a fast storage device, and its internal data mainly includes user data and management data. Data that manages user data is called management data, also called metadata. There are many kinds of management data, such as SSD configuration information, L2P table, etc. Whether these data are correct or not will directly affect the normal operation of SSD or the correctness of operating data processing. [0003] In practical applications, it is generally simple to save the metadata when powering off and restore it when powering on. When metadata recovery errors occur, the traditional method is to scan all metadata blocks, determine whether they are metadata blocks that need to be reconstructed according to the re...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F3/06G06F11/14
CPCG06F3/0619G06F3/064G06F3/0679G06F11/1441G06F11/1469
Inventor 苗森
Owner LANGCHAO ELECTRONIC INFORMATION IND CO LTD