Importance

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Abstract

A virtual disk expansion method is disclosed in the present application, comprising: creating a virtual disk file according to system images and a target disk volume value contained in a received expansion request; mounting the virtual disk file to a physical host, and generating a virtual disk; reading partition information of the virtual disk; deleting a partition to be expanded of the virtual disk and creating a new partition according to a partition volume value of the partition to be expanded and an expansion value; and reading a file system of the virtual disk and expanding the file system to be adapted to the new partition. The virtual disk expansion method is realized based on a physical host, shortens the I/O path and improves the I/O efficiency; also, during the virtual disk expansion process, there is no need to start a virtual machine on the physical host and the expansion is performed before the start of the virtual machine, thereby reducing technical complexity and coupling.

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First Claim