Logical volume construction method, apparatus and device, readable storage medium and program product

Abstract

Embodiments of the invention disclose a logical volume construction method, apparatus and device, a readable storage medium and a program product. The method comprises the steps of obtaining logical volume construction demand information; a logical volume is constructed according to the logical volume construction demand information, logical volume information is obtained, and the logical volume comprises one or more logical units from different physical storage devices; connection between one or more hosts and the logical volume is established according to the logical volume information, a mapping relation exists between the hosts and the logical volume, and read-write permissions of the hosts and the logical volume are different. According to the technical scheme, management and read-write control of the logical volume among multiple hosts can be realized by setting the read-write permission of the logical volume by virtue of different hosts without the cooperation of application layers such as a file system, so that the read-write control requirement of one-write multi-read in a global level can be met on the premise of reducing the management implementation complexity of the logical volume, and the user experience is improved. And a global read-write control solution on storage is provided for the application in a one-write multi-read form.

Description

technical field [0001] Embodiments of the present disclosure relate to the technical field of data storage, and in particular to a logical volume construction method, device, device, readable storage medium, and program product. Background technique [0002] With the development of data technology, shared storage is used more and more widely. Shared storage refers to a type of storage product that can be mounted on multiple hosts or computing nodes. The hosts or computing nodes can simultaneously access the storage products on the storage product. Data, such as: SAN (Storage Area Network, storage area network) storage and distributed storage are commonly used shared storage products that can support one write and multiple reads. However, both SAN storage and distributed storage have limitations in capacity, read-write switching, etc. to varying degrees. Existing solutions include LVM (Logical Volume Manager, logical volume management) and CLVM (Cluster Logical Volume Manager...

AI Technical Summary

Problems solved by technology

However, both SAN storage and distributed storage have limitations in capacity, read-write switching, etc. to varying degrees. Existing solutions include LVM (Logical Volume Manager, logical volume management) and CLVM (Cluster Logical Volume Manager, network cluster logical volume management) ), but LVM is a stand-alone version, which cannot realize the read and write control of LV (Logical Volume, Logical Volume) between multiple hosts. Although CLVM is a cluster version, it lacks read and write control, and requires application layers such as file systems to realize read and write Control, that is to say, the existing solutions can only partially solve the LV capability, and cannot meet the read-write control requirements of the global level.

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