Link breakage protection method and system for cloud packing partition of Linux virtual machine and medium

The invention discloses a link breakage protection method and system for a cloud packing partition of a Linux virtual machine and a medium. The method comprises the steps: after a link breakage protection starting instruction is obtained, creating a memory disk, and cloning the cloud packing partition to the memory disk; switching the root partition to the memory disk; if the switching is successful, modifying the name of the cloud packing partition and operating the system in the memory disk; and synchronizing the memory disk file to a cloud disk according to a preset time interval. According to the embodiment of the invention, firstly, a memory disk is created, a cloud disk root partition is cloned to the memory disk, then the root partition is switched to the memory disk, and a system is operated in the memory disk to synchronize memory disk files to a cloud disk according to a preset time interval; in other words, the root partition of the cloud disk is transferred to the memory disk, and the system is op