Access method and system for block storage data in distributed storage system

Abstract

The invention provides an access method and system for block storage data in a distributed storage system. The access method comprises the steps that a distributed STGT multi-resource management system and a distributed block storage system are constructed; in the distributed STGT multi-resource management system and the distributed block storage system, a distributed PR mechanism is adopted to achieve Active/Active multi-path environment and cluster multi-node access block storage; a distributed watcher mechanism is adopted to regularly monitor the accessibility of block storage in the distributed storage system; the distributed PR mechanism and the watcher mechanism are adopted to decouple multi-service process starting in distributed cluster nodes. According to the access method and system for the block storage data in the distributed storage system, authority conflicts of distributed block storage concurrent access are decreased, authority control of concurrent access is enhanced, and the security and the reliability of data concurrent access, the accuracy and the timeliness of block storage early warning and the stability of the distributed storage system and block storage data access are improved.

Description

technical field [0001] The invention relates to the technical field of cloud storage and computer information storage, in particular to a method and system for accessing block storage data in a distributed storage system. Background technique [0002] In the infrastructure as a service (IaaS) of cloud computing, cloud operators provide hosted physical machines, virtual machines and other facilities for different users to rent and use according to their actual needs. Virtual machine service is the core of IaaS, and almost all IaaS cloud operators provide virtual machine services. The virtual machine here refers to the system virtual machine in a narrow sense. Common virtual machines include Hyper-V, KVM, VMware, etc. [0003] Traditional virtual machine storage services can be divided into three categories: open system direct-attached storage (Direct-Attached Storage, DAS), network-attached storage (Network-Attached Storage, NAS) and storage area network (StorageArea-Network...

AI Technical Summary

Problems solved by technology

[0008] Generally speaking, STGT is a good choice for building a small-scale iSCSI Target, but STGT does not support PR, and cannot meet the needs of Active / Active multi-path environments and cluster multi-node access storage

When multiple nodes allocate block storage resources to the same LUN through iSCSI multipathing, access conflicts will cause damage to virtualized files, which cannot guarantee the security of block storage data access in a distributed storage system

Even if the LUN block storage resource is abnormal, multiple hosts cannot perceive it, and continue to read and write data to the LUN, causing abnormal virtual desktop infrastructure (VDI) and bringing unpredictable consequences

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