Method, system and device for online storage migration of virtual machine system

Abstract

The invention discloses a device, a system and a method for online storage migration of a virtual machine system. The method includes: copying files by controlling a first storage controller of a source storage device and a second storage controller of a target storage device, copying a master image file to the target storage device, recognizing whether the size of a slave image file accords with the terminate threshold condition or not, if yes, responding to the terminate threshold condition to stop the virtual machine system and migrating to the target storage device, and integrating the master image file and the slave image file to form a new system file. By using the storage controllers for realizing a migration mechanism of mass data copying operations, occupancy and dependency on resources of a physical mainframe by the storage migration method are avoided, influences on performances of the physical mainframe and the virtual machine system on the physical mainframe are weakened, and flexibility, rapidness and high efficiency in online storage migration of the virtual machine system are realized.

Description

technical field [0001] The invention relates to the field of computer applications, in particular to a method, system and device for online storage migration of a virtual machine system. Background technique [0002] Online migration of virtual machine systems is an indispensable tool for most virtual machine system managers, and is widely used in fault tolerance, disaster recovery and load balancing of data centers. Currently, online migration of virtual machine systems mainly includes computing migration, storage migration, and system-wide migration, that is, storage and computing are migrated at the same time. The online storage migration of the virtual machine system refers to migrating the disk files of the virtual machine system from one data storage device to another data storage device when the virtual machine system is running, and performing maintenance and reconfiguration. [0003] A method for realizing online storage migration of a virtual machine system is to ...

AI Technical Summary

Problems solved by technology

However, in order to meet the basic operating requirements of the virtual machine system on the physical host, the resources available for migration on the physical host are very limited, resulting in a shortage of memory resources on the physical host, which also affects the performance of storage migration and prolongs the migration time.

[0005] In addition, the physical host occupies the physical host resources for reading and writing. When other tasks need to use the physical host resources, such as a new virtual machine system needs to be started or created, or the physical host resources are already under use, migration may occur. The time increases, causing the disk incremental data to increase with time, further prolonging the migration time

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