Metadata service system metadata synchronized method and writing server updating method

A metadata service and synchronous update technology, applied in the fields of electrical digital data processing, special data processing applications, instruments, etc., can solve problems such as file system unavailability, increased access delay, and failure to solve the problem of state data synchronization. The effect of solving the single point failure problem, high reading efficiency, and meeting the needs of a large number of concurrent accesses

Active Publication Date: 2010-06-23
CHINA MOBILE COMM GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] 1. The existing parallel file system that provides metadata services by a single server does not have high availability, and the failure of the metadata server will cause the entire file system to be unavailable
[0009] 2. Using shared storage devices to form a metadata server with a master-stand

Method used

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  • Metadata service system metadata synchronized method and writing server updating method
  • Metadata service system metadata synchronized method and writing server updating method
  • Metadata service system metadata synchronized method and writing server updating method

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Embodiment Construction

[0053] Embodiments of the present invention provide a metadata service system, a method for synchronously updating metadata, and a method for updating server writes. Through multiple servers serving as backups for each other, the synchronization update of metadata stored between servers and the update of write servers solve the problem of single point failure problem, and can meet the high efficiency of a large number of concurrent access requirements.

[0054] The system and method provided by the present invention will be described in detail below with reference to the accompanying drawings.

[0055] see figure 1 , is one of the structural diagrams of the metadata service system provided by the embodiment of the present invention, including: a write server 11 and a read server 12; wherein:

[0056] The write server 11 is used to store metadata in the parallel file system and accept read access; and accept write access, modify the metadata in the parallel file system, and sy...

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PUM

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Abstract

The invention discloses a metadata service system metadata synchronized method and writing server updating method. The metadata service system provided by the invention includes a writing server and a reading server; the writing server is used for storing the metadata in a concurrent file system to receive reading access and receive writing access; correcting the metadata in the concurrent file system and synchronously updating the corrected metadata into the reading server; the reading server is used for storing the metadata and receiving reading access, receiving the synchronous updating of the writing server to the metadata, and is also used for converting into writing service when the write server is monitored to be valid. The invention solves the problem of single point failure through the mutual backup of the reading server and the writing server, and can meet high effective large-scale concurrent access demands.

Description

technical field [0001] The invention relates to distributed storage in cluster computing, in particular to a metadata service system for storing, modifying and reading metadata in a parallel file system, a method for synchronizing metadata and a method for updating a write server. Background technique [0002] A file system is a subsystem used for data storage and reading in a computer system, and is generally built on a disk. In network application scenarios, computing and storage are often separated, that is, distributed file systems are accessed through the network. For high-performance computing and high-load network service applications that use a large number of computers to work in parallel, it is often necessary to use multiple servers dedicated to storage to jointly provide file system services to meet access bandwidth requirements. [0003] A commonly used high-performance parallel file system architecture is to store the "metadata" such as the index information o...

Claims

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Application Information

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IPC IPC(8): G06F17/30
Inventor 王旭徐萌罗治国
Owner CHINA MOBILE COMM GRP CO LTD
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