Cluster file system and file service method thereof

Abstract

The invention provides a cluster file system, which is characterized by comprising a directory server, a layout server cluster and a memory device array, wherein the directory server is used for storing directory metadata and providing a directory service; the layout server cluster is used for storing layout metadata and providing a layout service; and the memory device array is used for storing file content data. The invention also provides a corresponding file service method. The file service method comprises a file accessing step, namely, a client first accesses the directory server to acquire the directory information of a file, then accesses the layout sever to acquire the distribution information of the file content data on physical memory devices, and finally directly accesses the physical memory devices to acquire the data information. Compared with the prior art, the invention can further improve the expansion capability of the file cluster system, and is highly compatible and short in accessing delay.

Description

technical field [0001] The invention relates to the technical field of network storage, in particular to a cluster file system and a file service method thereof. Background technique [0002] With the construction of the information society and the rapid development of the Internet, the rapid growth of information data and the rapid expansion of application scale, more and more large-scale applications not only require high-performance computing power, but also require large-capacity, high-performance, high-speed Scalability and other aspects put forward higher requirements, and the cluster file system has become a key factor restricting the development of applications. The cluster file system needs to provide huge storage capacity (such as PB-level storage capacity) and provide high aggregate I / O performance (such as reaching GB / s level, or even tens or hundreds of GB / s I / O performance). The demand for both capacity and performance requires a highly scalable cluster file s...

AI Technical Summary

Problems solved by technology

[0007] Moreover, the object storage system cannot directly support block interfaces to access storage devices, and can only be exported as object access interfaces through the object storage server

At present, the storage devices that occupy the absolute mainstream directly provide block access interfaces, so the compatibility of object storage systems is relatively weak.

The object storage server needs to maintain the metadata and data in the device, and convert the object access interface to the block access interface, and cannot directly provide the block access interface, resulting in the inability to effectively utilize the high-performance data access of the SAN storage network

[0008] Furthermore, the object storage system will increase the data access delay and affect the data access performance

Since most of the current storage devices provide block access interfaces, object storage systems must convert between object access protocols and block access protocols, resulting in increased data access delays

According to statistics, the access latency of the object storage system increases by about 5%.

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