Method and device for data recovery and cluster storage system

A cluster storage and recovery method technology, applied in the storage field, can solve problems such as equipment failure again, increase the risk of data loss, and overhead affecting system performance, and achieve the effect of high recovery performance.

Active Publication Date: 2013-04-24
HUAWEI TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This not only brings huge overhead and affects the performance of the entire system, but also

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  • Method and device for data recovery and cluster storage system
  • Method and device for data recovery and cluster storage system
  • Method and device for data recovery and cluster storage system

Examples

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Embodiment Construction

[0040] Various exemplary embodiments, features, and aspects of the invention will be described in detail below with reference to the accompanying drawings. The same reference numbers in the figures indicate functionally identical or similar elements. While various aspects of the embodiments are shown in drawings, the drawings are not necessarily drawn to scale unless specifically indicated.

[0041] The word "exemplary" is used exclusively herein to mean "serving as an example, embodiment, or illustration." Any embodiment described herein as "exemplary" is not necessarily to be construed as superior or better than other embodiments.

[0042] In addition, in order to better illustrate the present invention, numerous specific details are given in the specific embodiments below. It will be understood by those skilled in the art that the present invention may be practiced without these specific details. In other instances, well-known methods, means, components and circuits are ...

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Abstract

The invention provides a method and a device for data recovery and a cluster storage system and relates to the technical field of storage. The method includes: step 1, inquiring reverse mapping table of a fault storage device on storage nodes and acquiring file information stored in the fault storage device when the fault storage device exists in the cluster storage system, step 2, inquiring a metadata virtual volume which treats the storage nodes on which the fault storage device are as main nodes and acquiring a piece of data which is not stored in the fault storage device in the file and step 3, recovering a piece of data which is stored in the fault storage device by the file according to the acquired piece of data. The method, the device and the system of the embodiment of the invention have the advantages that a block-level data recovery and data migration by maintaining the fine granularity are achieved, a load balance is controlled effectively, the quantity of data scanning is reduced greatly and the recovery performance is high.

Description

technical field [0001] The invention relates to the field of storage technology, in particular to a data recovery method, device and cluster storage system. Background technique [0002] With the rapid development of computing technology and network technology, the demand for data storage capacity is increasing, and at the same time, it is also facing increasing costs. In order to meet the demand for capacity, the storage system has undergone continuous expansion from combining multiple storage blocks into independent storage servers to combining multiple independent storage servers into cluster storage. [0003] Large-scale cluster storage systems usually connect a large number of storage nodes (storage servers) through coaxial cables, network cables, and optical fibers. Storage nodes usually have disks, solid state drives (Solid State Device / Solid State Drive, SSD), etc. The local storage device is used to store data, and the cluster storage system provides storage servic...

Claims

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Application Information

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IPC IPC(8): G06F11/14G06F3/06
Inventor 李立
Owner HUAWEI TECH CO LTD
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