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A method and system for delayed synchronization recovery of metadata operation authority information

A technology of operation authority and information delay, applied in the direction of digital data information retrieval, file system, digital data protection, etc., can solve problems that affect customer use and users cannot operate metadata, etc., achieve reliable design principles, highlight substantive features, The effect of reducing the impact

Active Publication Date: 2022-07-19
INSPUR SUZHOU INTELLIGENT TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] When there are a lot of caches for the client, the MDS will rebuild the cache according to the cap information. It will take a very long time to restore the cap to the state before the failure. During this time, the user cannot operate the metadata on the MDS. The file directory affects the use of customers. The present invention provides a method and system for delayed synchronous recovery of metadata operation authority information

Method used

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  • A method and system for delayed synchronization recovery of metadata operation authority information
  • A method and system for delayed synchronization recovery of metadata operation authority information
  • A method and system for delayed synchronization recovery of metadata operation authority information

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Embodiment Construction

[0072] In order to make those skilled in the art better understand the technical solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described The embodiments are only some of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention. Key terms appearing in the present invention are explained below.

[0073] client: client, sends requests to the file system to complete operations such as file addition, deletion, reading, and writing;

[0074] MDS: Metadata server, providing various access operations of metadata;

[0075] cap: metadata operation authorit...

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Abstract

The present invention provides a method and system for delayed synchronization recovery of metadata operation authority information. The method includes the following steps: when a metadata server fails to restart, the client sends a reconnection message containing the number of metadata operation authority to the metadata Server; when the metadata server processes the message sent by the client, it determines whether the number of metadata operation permissions is equal to 1; if the number of metadata operation permissions is equal to 1, an empty inode is created and the status of the created inode is set to not loaded Status; after the metadata server is started, when it receives a request from the client to operate the index node, the status of the index node is judged; the metadata operation authority synchronization operation is performed according to the status of the index node. After the metadata operation permission synchronization operation is completed, continue to execute the client's request completion response. Improve the efficiency of metadata server failover and reduce the impact on user usage.

Description

technical field [0001] The invention relates to the technical field of metadata access rights, in particular to a method and a system for delayed synchronization recovery of metadata operation rights information. Background technique [0002] When the client accesses the file system and performs operations, the MDS (metadata server, which provides various access operations for metadata) assigns the required cap (metadata operation authority) to the client (client). client and, MDS will keep the cap in memory. The structure stored in the client is key-value, the key is the number of the MDS, and the value is the permission applied for from the MDS. The structure saved in the MDS is key-value, where the key is the number of the client and the value is the authority assigned to the client. [0003] It can be seen from the above that the client and MDS are in a many-to-many relationship. When operating the same inode (inode, each file has a corresponding inode, which contains ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F16/13G06F16/182G06F21/62
CPCG06F16/134G06F16/182G06F21/6218G06F2221/2141
Inventor 解志阳孟祥瑞
Owner INSPUR SUZHOU INTELLIGENT TECH CO LTD
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