Disk space management method and device

Abstract

The invention provides a method and device for managing disk space. The method comprises the steps that a logic block address assignment table is established and stored by a storage device, wherein associated information of a logic block address of each logic unit on a local disc and other storage devices are recorded in the logic block address assignment table, and the associated information of the logic block address comprises a logic block address value, data length and a path; an expansion command to a certain logic unit is received and whether the local disc has a free space or not is judged by the storage device; if not, whether unused logic units of other storage devices exist or not are searched in the logic block address assignment table by the storage device; and if so, the unused logic units are assigned to the logic unit. According to the method and the device for managing disk space, a plurality of storage devices are involved when the logic unit needs to be to expanded by recording and managing the logic block address assignment condition of the local disc and other storage devices and are not limited by local hardware resources, thereby the volume can be expanded infinitely as much as possible.

Description

technical field [0001] The invention relates to the technical field of the Internet, in particular to a disk space management method and device. Background technique [0002] SAN (StorageAreaNetwork, storage area network) is a typical network storage structure, it is a high-speed network or sub-network that provides data transmission between computers and storage devices, where storage devices refer to one or more A disk device that stores computer data. A SAN network consists of a communication structure responsible for network connections, a management layer responsible for organizational connections, storage components, and computer systems to ensure the security and strength of data transmission. [0003] iSCSI (InternetSmallComputerSystemInterface, small computer system interface) is a protocol based on TCP / IP, which is used to establish and manage the interconnection between storage devices, hosts and clients, etc., and create SAN. The main function of iSCSI is to en...

AI Technical Summary

Problems solved by technology

[0004] The problem with the prior art is that only local disks can be used to create logical units. When the local disks are not enough, the disks can only be expanded by adding hardware. However, due to the limited hardware resources that can be used for expansion, it cannot be realized. Unlimited expansion of capacity as much as possible

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