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Method and system for managing metadata

A management method and management system technology, applied in hardware redundancy for data error detection, response error generation, etc., can solve problems such as complex operation and system instability, achieve stability and reliability, prevent Out-of-order data synchronization, the effect of enhancing the sense of experience

Inactive Publication Date: 2013-08-07
DAWNING INFORMATION IND BEIJING
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  • Description
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Problems solved by technology

[0006] Aiming at the problem in the related art that the operation of taking over the business of the abnormal metadata server is complicated and causes the system to be unstable, the present invention proposes a metadata management method and system, which can enable the normal metadata server to smoothly take over the abnormal metadata server. business, so as to effectively realize the replacement between the active and standby servers, ensure the stability and reliability of the system, and improve the user experience

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  • Method and system for managing metadata

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Embodiment Construction

[0037] 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. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention belong to the protection scope of the present invention.

[0038] According to an embodiment of the present invention, a metadata management method is provided.

[0039] Such as figure 1 As shown, the management method according to the embodiment of the present invention includes:

[0040] Step S101, when the original master server is abnormal, select a backup server as the current master server according to the amount of stored data and replace the original master server to provide services. This step is in the NODEDOWN state described in the text;

[0041] S...

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Abstract

The invention discloses a method and a system for managing metadata. The method includes that under the condition that an original main server is abnormal, a backup server is selected to be used as a current main server and replace the original main server to provide service according to storage data amount; and according to residual quantity data of the current main server compared with other standby servers, synchronization is conducted on each standby server. In a synchronization period, changed data of the current main server due to service providing is forbidden to be sent to other backup servers. By selecting the current main server and providing the service and by conducting data synchronization on the current main server and the backup servers, the current main server can conduct normal business takeover so as to achieve replacing among the main server and the backup servers effectively. In the synchronization period, the changed data caused by service providing is forbidden to be sent so as to prevent out-of-order data synchronization, the stability and the reliability of the system are guaranteed, and experience of users is improved.

Description

technical field [0001] The present invention relates to the computer field, and in particular, to a metadata management method and system. Background technique [0002] Distributed systems usually use separate storage methods for metadata and data, and for metadata in distributed file systems, they usually use the management method of writing double copies or writing multiple copies for storage. Through this method, two files can be generated. Aspects of benefits: 1. When a metadata server is abnormal, other metadata servers can take over the business on the abnormal server in a timely manner, so that end users of the distributed file system will not feel abnormal, and improve user experience ; 2. The metadata servers are mutually active and standby. When there is a new business on the primary server, data synchronization will be performed on the backup metadata server, which improves the reliability of the system. However, as the number of metadata servers increases, the m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F11/20
Inventor 李博张玉龙张东阳苗艳超刘新春邵宗有
Owner DAWNING INFORMATION IND BEIJING
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