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A remote directory branch point maintenance system and method thereof

A technology for directory branching and maintenance system, applied in the maintenance field of remote directory branch points, can solve the problems of low space utilization rate and complicated operation, and achieve the effect of eliminating the waste of index nodes, eliminating extra operations, and reducing the complexity of implementation.

Active Publication Date: 2017-04-12
INST OF COMPUTING TECH CHINESE ACAD OF SCI +1
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Problems solved by technology

[0006] The technical problem to be solved by the present invention lies in the problem that the remote directory branch point maintenance space utilization rate is not high and the operation is complicated during the load distribution process of the cluster file system among multiple metadata servers in the prior art, and a new remote directory is provided Branch point maintenance method to improve space utilization and reduce operational complexity

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  • A remote directory branch point maintenance system and method thereof
  • A remote directory branch point maintenance system and method thereof
  • A remote directory branch point maintenance system and method thereof

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Embodiment Construction

[0056] Specific embodiments of the present invention are given below, and the present invention is described in detail in conjunction with the drawings.

[0057] The present invention proposes a new method for maintaining remote directory branch points in metadata clusters, which separates the storage and recording of branch points, and records the index node number (ino) and index node of the branch point in the metadata server where the parent directory is located. Version number (generation), without increasing system space overhead. Moreover, embedding the location information of the metadata server in the inode number does not require the client to additionally acquire the location of the target metadata server where the branch point of the remote directory is located, and can effectively reduce the complexity of cross-metadata server operations.

[0058] figure 1 It is a schematic structural diagram of the remote directory branch point maintenance system of the present ...

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Abstract

The invention discloses a remote directory branch point maintenance system, which includes: a metadata server cluster and a client, and the metadata server cluster further includes: a main metadata server and multiple remote metadata servers, wherein the main metadata server is used for Record the index node inode of all newly created directories in the parent directory, and embed the location information of the remote metadata server in the index node inode, record and maintain the location information of the remote metadata server, and the remote metadata server is used to create The remote subdirectory is used to realize the metadata access of the remote subdirectory. The client is used to determine the target metadata server according to the location information of the maintained metadata server cluster, establish a connection with the target metadata server, and update the target metadata server. Send an access request. The invention also discloses a method for maintaining remote directory branch points.

Description

technical field [0001] The invention relates to a metadata cluster technology of a cluster file system, in particular to a method for maintaining remote directory branch points spanning multiple servers in the metadata cluster. Background technique [0002] In large-scale cluster file systems, the separation of metadata and data services has become a trend. On the one hand, data access does not need to go through the metadata server, but directly accesses the storage device in an out-of-band manner, so as to obtain high data access performance; on the other hand, the metadata server specifically provides metadata services, offloading the data access load, Therefore, a single metadata server can support higher client access performance, manage more storage devices, and support larger system scale expansion. However, with the continuous expansion of the system scale, a single metadata server has gradually become the bottleneck restricting the expansion of the system. In orde...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F17/30H04L29/08
CPCG06F16/183H04L67/1001
Inventor 郑彩平张军伟邵冰清刘振军张浩
Owner INST OF COMPUTING TECH CHINESE ACAD OF SCI
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