Freezing method and device of virtual machine

Abstract

The invention discloses a freezing method and device of a virtual machine. The method comprises the following steps: acquiring a current storage state of a storage pool in a file system; judging whether the current storage state is abnormal or not; when the current storage state is abnormal, issuing an on-hook instruction to a target virtual machine having a dependency relationship with the storage pool, so that the target virtual machine suspends communication interaction with the storage pool; and issuing a closing instruction to the target virtual machine, so that the file descriptor running on the target virtual machine is closed, and further communication interaction between the target virtual machine and the storage pool is not carried out any more. According to the method and the device, when the storage pool has the unavailable fault, the communication interaction between the target virtual machine and the storage pool is paused through the on-hook instruction, and then the file descriptor running on the target virtual machine is closed through the closing instruction, so that the running state and the memory data of the target virtual machine can be completely reserved, and the user experience is improved. And the problem of memory data loss or damage is avoided.

Description

technical field [0001] The invention relates to the technical field of shared storage, in particular to a method and device for freezing a virtual machine. Background technique [0002] As a storage space shared by two or more processes, shared storage is more and more widely used on current mainstream cloud platforms. However, due to network and hardware reasons, shared storage inevitably has the possibility of failure. When the shared storage fails and becomes unavailable, the virtual machine that relies on the shared storage cannot run normally, resulting in the loss or damage of the memory data of the virtual machine, interrupting the corresponding business, and seriously affecting the continuous availability of the business. [0003] Usually, in order to ensure the continuous availability of the business to the greatest extent, when the shared storage fails and is unavailable, the virtual machine that depends on the shared storage is forcibly shut down, and the shared s...

AI Technical Summary

Problems solved by technology

[0004] In view of this, the embodiments of the present invention provide a method and device for freezing a virtual machine, so as to solve the problems of data loss and service interruption in the memory of the virtual machine caused by an unavailable fault in the shared storage

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