File system log storage system under virtualization environment

Abstract

The invention discloses a file system log storage system under a virtualization environment, which comprises a log adding module, a log disc dynamic insertion module and a virtual log disc management module, wherein the log adding module and the log disc dynamic insertion module are located in a virtual machine, and the virtual log disc management module are located in a management program of the virtual machine. The log adding module applies for sharing an internal memory to store log adding requests, and enables log reading and writing requests to be oriented to a created virtual log disc. The log disc dynamic insertion module enables the created virtual log disc to be loaded on a file system in a hanging mode, the virtual log disc management module reads the log adding requests for creating the virtual log disc for the requests, creates the virtual log disc for the requests, enables information of the created virtual log disc to be fed back to the log disc dynamic insertion module, and executes the log reading and writing requests on the virtual log disc with the oriented log reading and writing requests. The file system log storage system uses high speed equipment to store log data originally stored in low speed equipment, and improves writing performance on the premise of guaranteeing log reliability and expressing normal log effects.

Description

technical field [0001] The invention relates to the technical field of file systems in a computer system structure virtualization environment, and more specifically, provides a file system log storage system in a virtualization environment to improve the writing performance of the file system. Background technique [0002] In recent years, as the complexity of server applications has increased greatly, the system is prone to errors and the stability has declined. In order to ensure data consistency when the file system suddenly crashes, the current operating system generally uses a log-type file system with a log. First, the file system opens up additional storage space for the file system log area on the disk. Before the file system writes dirty data to the disk (new files are written or the original files are modified), the file system will modify these Generate corresponding log records and write the log records into the log area. In this case, once a downtime occurs, th...

AI Technical Summary

Problems solved by technology

If there are multiple virtual machines performing write operations at the same time, according to the content described above, each virtual machine can read and write to its own log area. will increase, resulting in a decrease in read and write speeds

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