Method and apparatus for online migration of multi-disk virtual machine into different storage pools

A method and apparatus for online migration of a multi-disk virtual machine into different storage pools are provided. The method includes: constructing disk trees by using each active disk to be migrated of a virtual machine and a plurality of snapshot disks that are correspondingly generated based on each active disk to be migrated, so as to record a generation time sequence of a plurality of disks in the disk tree; migrating a memory snapshot file; and determining a target storage pool corresponding to each active disk to be migrated, and migrating a plurality of disk trees into corresponding target storage pools respectively according to the generation time sequence of the disk to be migrated in the disk tree.