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File access method, apparatus and system in distributed NAS storage system

A storage system and file access technology, applied in transmission systems, electrical components, etc., can solve problems such as low system business performance, and achieve the effect of improving business performance, good user experience, and meeting customer needs

Inactive Publication Date: 2018-01-12
ZHENGZHOU YUNHAI INFORMATION TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a method for file access in a distributed NAS storage system, which solves the problem of low system business performance due to frequent application and recall of distributed locks at multiple NFS servers, and ensures file security. On the basis of the file, it can provide access request service for the client without locking the file

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  • File access method, apparatus and system in distributed NAS storage system
  • File access method, apparatus and system in distributed NAS storage system
  • File access method, apparatus and system in distributed NAS storage system

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Embodiment Construction

[0036] In a distributed NAS storage system, since multiple clients send file requests to multiple servers at the same time, when a large number of clients send access requests to the same file through different servers, in order to avoid the At the same time, each client is provided with a request response to the same file, resulting in a file error. It is necessary to lock the file when a server provides an access response to the client, thereby repelling other clients from simultaneously accessing the file through other servers. Access, until the client access is completed, the recall lock is performed.

[0037] When there are too many requests to access the same file, each server needs to apply for and recall locks in turn when processing each access request, resulting in frequent and tedious locking and unlocking operations during the entire access process, which increases the entire storage system. The complexity of the program for accessing files in the middle, thereby i...

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PUM

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Abstract

The invention discloses a file access method, apparatus and system in a distributed NAS storage system. The method comprises the following steps: allocating a service node to each file in the storagesystem in advance, when an access request is received, judging whether the service node of a to-be-accessed file of the access request is a local service node, if so, directly providing request response, if not, sending the access request to a corresponding service node, and providing the request response by the corresponding service node. The access request of each file in the storage system canonly be processed by a fixed service node, this is because when request service is provided for the client, the file is not locked, thereby avoiding the problem of low service performance of the filescaused by frequent application and callback of the service nodes, improving the service performance of the whole system and improving the user experience.

Description

technical field [0001] The present invention relates to the field of distributed NAS storage systems, in particular to a method, device and system for file access in a distributed NAS storage system. Background technique [0002] In the distributed NAS storage system, it is generally divided into two categories, NAS protocol server and storage system. The most commonly used NAS protocol server is the NFS server, which is responsible for interacting with the NFS client and providing file services for the client. [0003] When multiple clients access the same file concurrently through multiple NFS servers, distributed locks are needed to ensure the consistency of NFS server access and the validity of the cache. This requires frequent application and recall of distributed locks among multiple NFS servers, resulting in low business performance of the entire system and failing to meet customer needs. Contents of the invention [0004] The purpose of the present invention is to...

Claims

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Application Information

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IPC IPC(8): H04L29/08
Inventor 孟祥瑞
Owner ZHENGZHOU YUNHAI INFORMATION TECH CO LTD