Dynamic adjustment method, system and device for backup speed limit of virtual machine

Abstract

The invention discloses a dynamic adjustment method, a system and a device for the backup speed limit of a virtual machine, and the method comprises the steps: determining a backup speed limit value of a virtual machine needing to be backed up according to the bearable network bandwidth of a backup storage pool and the number of virtual machines needing to be backed up; according to the backup speed limit value of the target virtual machine and the to-be-backed-up data volume of the virtual disks in the target virtual machine, determining the disk backup speed limit value of the virtual disks, and according to the disk backup speed limit value of the virtual disks, performing disk data backup on the virtual disks at the same time; if the bearable network bandwidth of the backup storage pool and/or the number of the virtual machines needing to be backed up are/is changed, determining the new disk backup speed limit value of the virtual disk again, and performing disk data backup according to the new disk backup speed limit value. It can be seen that the backup flow in the system cannot reach the bandwidth upper limit of the backup storage pool, and the bandwidth of the backup storage pool cannot be idle, so that large IO pressure cannot be brought to the backup storage pool, the backup duration can be shortened, and the data backup efficiency is improved.

Description

technical field [0001] The invention relates to the field of data backup, in particular to a dynamic adjustment method, system and device for speed limit of virtual machine backup. Background technique [0002] With the development of virtualization technology, more and more enterprise applications are deployed in virtual data centers, which can not only improve resource utilization, but also enhance system scalability. At present, in order to ensure the data security of the virtual data center, a production storage pool and a backup storage pool are usually set up in the virtual data center. The production storage pool contains virtual machines for storing system data; Virtual machines in the pool perform data backup to prevent system data loss when the production storage pool fails. However, when the number of virtual machines to be backed up is too large and the amount of backup data is too large, the IO (Input / Output, input / output) performance of the production storage ...

AI Technical Summary

Problems solved by technology

However, the number of backup virtual machines in the virtual data center will change at any time (for example, there may be new backups that need to be performed at any time, or some virtual machines will be backed up soon due to the different amounts of data to be backed up in different virtual machines). In this scenario, if the backup rate limit is set to a large value, it will put a huge pressure on the write performance of the backup storage pool, and may even cause the backup to fail; if the backup rate limit is set to a small value, the entire backup process will last longer. long, resulting in low backup efficiency, and may even affect the normal operation of the system

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