Metadata hierarchy management method and system of storage virtualization system

Abstract

The invention discloses a cell data layer managing method and system of a virtual storage system. The method makes layer management on a cell logic tree, introduces a matching table to lighten the pressure on the root directory server, able to not only rapidly and accurately orient to the directory to be accessed by the user but also achieve better extendable property of the system. The matching table is resident in the memory, and occupies extremely small space because of only recording the root entry address of each directory server, convenient to manage. It also has very high matching efficiency. The system includes the matching table, and the cell data servers and directory servers of the matching table management module; the matching table at least includes the names of the directory servers and the root directories of the cell data logic sub-trees stored in the directory servers. It has characters of high efficiency, good extendable property and easy management.

Description

technical field [0001] The invention belongs to the field of computer storage, and in particular relates to a metadata layer management method of a storage virtualization system and a system thereof. Background technique [0002] In modern high-performance computing, scientific computing and military applications have increasingly high requirements for storage, including large capacity, distributed, high performance, and high reliability. The virtual storage management method of WAN integrates various high-performance storage systems that are geographically distributed to form a huge distributed storage space, fully realize resource sharing, improve resource utilization, and effectively solve the explosive growth of stored data and storage management capabilities The contradiction between relative inadequacy. [0003] In a wide-area storage system, these massive storage resources must be managed effectively, thus introducing the concept of metadata. Metadata is the data th...

AI Technical Summary

Problems solved by technology

When the metadata becomes huge, the system will enable multiple metadata servers at the same time, which will lead to the following problems: on the one hand, the logical tree must be distributed on these metadata servers, and on the other hand, between the self-recording servers Collaborative operations are necessary because the metadata to be returned may be distributed across different metadata servers, thus putting pressure on the metadata root server

Third, if the root directory server fails, the entire directory service system will no longer be able to function normally, and it is difficult to achieve high availability of the system

Finally, this structure makes it difficult to scale the metadata server

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