NFS (Network File System) data I/O (Input/Output) acceleration method based on file system

Abstract

The invention relates to the computer storage technology, particularly to an NFS (Network File System) data I / O (Input / Output) acceleration method based on a file system. The method comprises the steps of: partitioning an area as a buffer area from physical storage; realizing an NFS parsing module on a RPC (Remote Procedure Call Protocol) layer; parsing each NFS request packet; distributing corresponding memory from the buffer area for each packet with an NFS writing request; and receiving the NFS data packet into the buffer area. When the buffer area meets a condition proposed by the scheme, the buffer area is activated firstly and refreshed subsequently. According to the method provided by the invention, the I / O times of physical storage mediums can be reduced; and the continuity of data addresses is ensured by the buffer area, so that the I / O performance can be improved.

Description

technical field

[0001] The invention relates to computer data storage technology, in particular to a Linux network file system (NFS) data reading and writing (I / O) method. Background technique

[0002] Network File System (NFS, short for Network File System) is one of the file systems supported by FreeBSD, allowing a system to share directories and files with others on the network. The NFS under the existing Linux system reads and writes data through the Remote Procedure Call Protocol (RPC, shorthand for Remote Procedure Call Protocol, which is a protocol for requesting services from remote computer programs through the network without knowing the underlying network technology. ) request implementation, each RPC packet has an NFS request / response packet. A typical NFS data flow model is as follows figure 1 As shown: each NFS request packet contains RPC packet header information, first passes through the RPC layer, the RPC layer receives the complete RPC packet, parses out ...

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