System and method for realizing automatic thin provisioning dynamic capacity expansion of storage system

Abstract

The invention provides a system and a method for realizing automatic thin provisioning dynamic capacity expansion of a storage system. The system comprises a capacity expansion information acquisition module, a capacity information analysis module, an IO (input / output) redirection layer capacity expansion module, an automatic thin provisioning capacity expansion module and a storage pool recover module, wherein the capacity expansion information acquisition module is used for acquiring a capacity expansion command and a corresponding capacity expansion size input by a user and transmitting the capacity expansion command and the corresponding capacity expansion size to the capacity information analysis module; the capacity information analysis module is used for dividing the obtained capacity expansion command into a capacity expansion suspend command and a capacity expansion recover command and transmitting the capacity expansion suspend command and the capacity expansion recover command to the IO redirection layer capacity expansion module; the IO redirection layer capacity expansion module is used for transmitting the capacity expansion suspend command and the capacity expansion size to the automatic thin provisioning capacity expansion module and transmitting the capacity expansion recover command to the storage pool recover module; the automatic thin provisioning capacity expansion module is used for conducting metadata capacity expansion operation to a storage pool of the storage system according to the received capacity expansion size, and transmitting metadata to the storage pool recover module; and the storage pool recover module is used for reactivating the storage pool according to the received metadata and the capacity expansion recover command. By adopting the system and the method provided by the invention, the automatic thin provisioning capacity expansion of the storage pool can be automatically completed.

Description

technical field [0001] The invention relates to capacity expansion technology of a storage system, in particular to a system and method for realizing automatic thin provisioning and dynamic capacity expansion of a storage system. Background technique [0002] Thin provisioning storage solutions can provide large-capacity virtual drives to the operating system. The core of this technology is "deception", such as figure 1 As shown, there may not be so many actual physical storage devices, and the operating system thinks that there is such a large storage space. Therefore, thin provisioning must be able to support dynamic expansion. Before the actual physical storage device space is full, use the dynamic expansion method of thin provisioning to expand the actual storage space in order to ensure the normal use of the user system. Otherwise, the operating system Being "cheated" into using storage space that doesn't exist will cause immeasurably serious problems. [0003] The th...

AI Technical Summary

Problems solved by technology

[0007] The present invention provides a thin provisioning and dynamic capacity expansion method to solve the capacity expansion realization and communication problems

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