Method and system for promoting metadata service reliability

A metadata service and metadata server technology, applied in transmission systems, electrical digital data processing, special data processing applications, etc., can solve problems such as the inability to break through reliability, the system cannot provide storage services, etc., to improve reliability and balance load, the effect of ensuring continuity
CN101059807AInactive Publication Date: 2007-10-24HUAZHONG UNIV OF SCI & TECH
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
HUAZHONG UNIV OF SCI & TECH
Publication Date
2007-10-24
Estimated Expiration
Not applicable · inactive patent

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Abstract

A method for improving metadata service reliability and a relative system belongs to computer memory technical field, for fully utilizing node resource to improve the reliability of metadata service. The inventive method comprises normal operation, main metadata server accident, backup metadata server lift, sub metadata server accident and second backup metadata server lift. The inventive system comprises a client node, a memory node, a main metadata server and a sub metadata server, which respectively comprises an object metadata service module, a memory resource manage module, and a high available module, wherein the high available module comprises a metadata copy module, an accident shield module, a detect module and a select module, the select module can select the memory node with minimum load as the backup metadata server, and the accident shield server is switched to next metadata server, and selects the backup metadata server to form a master-salve backup chain service mode, to improve the reliability of metadata service.
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Description

technical field

[0001] The invention belongs to the technical field of computer storage, and in particular relates to a method and a system for improving the reliability of metadata service. Background technique

[0002] Metadata is often referred to as "data of data". In order to reduce server overhead and increase transmission rate, network storage systems often separate metadata from data, and use a dedicated metadata server to manage metadata, so that data transmission does not need to go through the server. For transit, you only need to obtain enough metadata information in advance. The metadata server thus becomes a hub connecting client nodes and storage nodes, and it is easy to form a single point of failure. Therefore, it is necessary to seek methods to improve the reliability of metadata services.

[0003] Traditional network storage systems mostly use master-slave standby mode to provide reliable metadata services, such as Pang Liping, He Feiyue, Yue Jianhui, etc...

Claims

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