Method for recovering data in distributed file system and electronic device

A technology of distributed files and recovery methods, applied in the field of data processing, can solve problems such as the slowdown of data processing speed, and achieve the effect of reducing workload and improving IP processing capability

Active Publication Date: 2017-07-14
LENOVO (BEIJING) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of this, the present invention provides a data recovery method and electronic equipment in a distributed file system to overcome the problem in the prior art that the data processing speed decreases due to the fact that the data recovery task and the IO read and write tasks are all in charge of the main PG.

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  • Method for recovering data in distributed file system and electronic device
  • Method for recovering data in distributed file system and electronic device
  • Method for recovering data in distributed file system and electronic device

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Embodiment Construction

[0065] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. 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.

[0066] The embodiment of the present invention provides a data recovery method in a distributed file system, the distributed file system can be CEPH, and the distributed file system can be applied to a cluster, such as figure 1 Shown is a structural diagram of the cluster provided by the embodiment of the present invention.

[0067] The cluster includes a cloud controller 11 and multiple servers 12, each server 12 includes a memory 121 and a processor 122, and...

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Abstract

The invention provides a method for recovering data in a distributed file system and an electronic device. A main PG obtains a data recovery task; at least one first auxiliary PG having data recovery capability and a second auxiliary PG needing to recover data are determined from all auxiliary PGs corresponding to the main PG; a first target PG is determined from the main PG and the at least one first auxiliary PG; and the first target PG is controlled to recover a file copy corresponding to the second auxiliary PG. According to the invention, data recovery of the file copy can be carried out depending on the auxiliary PG, the file copy needing to be recovered can be recovered with no need of all depending on the main PG, and therefore the workload of the main PG is reduced, the IO processing speed of the main PG is not influenced, and the IP processing capability of the cluster is improved.

Description

technical field [0001] The invention relates to the technical field of data processing, and more specifically relates to a data recovery method and electronic equipment in a distributed file system. Background technique [0002] CEPH is an open source distributed file system for providing block, file and object interface services. CEPH uses a multi-copy mechanism to ensure data security and high availability. Specifically, the multi-copy mechanism takes PG (Placement Group) as the unit, where PG is the smallest unit for data migration and change, and is used to maintain user data (Object) in CEPH. A PG includes a primary PG and multiple secondary PGs, which are respectively distributed on different data storage devices (Object-based Storage Device, OSD). OSD is an independent data maintenance process, which is a process that is prone to failure in the cluster. [0003] When an OSD fails, the user data maintained by the primary PG and the copy of the user data maintained by...

Claims

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Application Information

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IPC IPC(8): G06F17/30G06F11/14
CPCG06F11/1458G06F16/184
Inventor 温利娟
Owner LENOVO (BEIJING) CO LTD
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