METHOD AND APPARATUS FOR CONSTRUCTING VIRTUAL CLUSTER BY UNION-MOUNTING READABLE AND WRITABLE VIRTUAL DISKS

摘要

The present invention relates to a method and apparatus for constructing a virtual cluster by union-mounting readable and writable virtual disks. A method for constructing a virtual cluster having a plurality of virtual machines according to an embodiment of the present invention comprises the steps of: receiving a provisioning request for a virtual cluster having a plurality of virtual machines; in response to the provisioning request for the virtual cluster, generating a first disk in which software commonly required for the plurality of virtual machines is installed, the first disk being shared and accessible by the plurality of virtual machines; generating, in each of the plurality of virtual machines, a second disk in which a write operation can be performed in association with the software; and union-mounting the first disk and the second disk. Accordingly, the present invention can provide a method and apparatus for constructing a virtual cluster by union-mounting readable and writable virtual disks, wherein a separate united virtual disk in which a write operation can be performed is provided and union-mounted with a read-only virtual disk, so that each of the virtual machines can perform a write operation on the shared virtual disk.