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Power failure safeguard method and device for nonvolatile memory

A non-volatile memory and power-down protection technology, which is applied in the direction of electrical digital data processing, response error generation, redundant data error detection in operation, etc., can solve the problem of metadata loss and data cannot be recovered reliably Source equipment and other issues to achieve the effect of ensuring security

Inactive Publication Date: 2017-07-07
LENOVO (BEIJING) CO LTD
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  • Summary
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  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If only the metadata is stored in the memory, in case of sudden power failure, the loss of metadata

Method used

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  • Power failure safeguard method and device for nonvolatile memory
  • Power failure safeguard method and device for nonvolatile memory
  • Power failure safeguard method and device for nonvolatile memory

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Embodiment Construction

[0020] Various aspects and features of the present disclosure are described herein with reference to the accompanying drawings.

[0021] It should be understood that various modifications may be made to the embodiments disclosed herein. Accordingly, the above description should not be viewed as limiting, but only as exemplifications of embodiments. Those skilled in the art will envision other modifications within the scope and spirit of the disclosure.

[0022] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the disclosure and, together with the general description of the disclosure given above and the detailed description of the embodiments given below, serve to explain the embodiments of the disclosure. principle.

[0023] These and other characteristics of the invention will become apparent from the following description of preferred forms of embodiment given as non-limiting examples with referenc...

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Abstract

The invention discloses a power failure safeguard method and device for a nonvolatile memory. The method comprises the steps that metadata is backed up to a first nonvolatile memory medium before a power failure; the metadata backed up in the first nonvolatile memory medium is acquired after power is recovered; and data in a source storage device is recovered according to the metadata, wherein the metadata contains first storage position information of the data in the source storage device and second storage position information of data corresponding to the data in the source storage device. The technical scheme in the embodiment guarantees that the metadata is backed up to the first nonvolatile memory medium in real time, so that the security of the metadata is guaranteed; when a system has an abnormal power failure, the metadata backed up in the first nonvolatile memory medium is acquired after power is recovered, then data in a second nonvolatile memory medium is recovered into the source storage device according to the metadata, and therefore the security of the data in the source storage device is guaranteed.

Description

technical field [0001] The invention relates to the technical field of computer storage, in particular to a power-down protection method and device for non-volatile memory. Background technique [0002] Non-volatile memory is a new type of memory stick specification that integrates dynamic random access memory and non-volatile flash memory chips, and can still retain complete memory data when the power is completely cut off. It generally uses a backup battery or capacitor to achieve power-down retention of data. [0003] Metadata refers to data used to describe data, mainly information describing data attributes, used to support and indicate storage location, historical data, resource search, file recording and other functions. Metadata can be regarded as a kind of electronic catalog. In order to achieve the purpose of cataloging, it is necessary to describe and collect the content or characteristics of the data, and then achieve the purpose of assisting data retrieval. Fo...

Claims

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Application Information

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IPC IPC(8): G06F11/14
CPCG06F11/1479
Inventor 叶怀胜李波
Owner LENOVO (BEIJING) CO LTD