Virtual machine snapshot processing method, device and system

A processing method and virtual machine technology, applied in the storage field, can solve the problem of high concurrency pressure in the snapshot center, and achieve the effect of reducing the overall concurrency pressure and reducing the probability of requesting disk blocks
CN109753340BActive Publication Date: 2021-07-13ALIBABA GRP HLDG LTD
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Patents(China)
Current Assignee / Owner
ALIBABA GRP HLDG LTD
Publication Date
2021-07-13

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Abstract

Embodiments of the present application provide a virtual machine snapshot processing method, device, and system. In the embodiment of this application, by adding a snapshot cache to the VM, the disk blocks whose frequency of use in the disk snapshot required during the VM startup process meets the set requirements are stored. Based on this, when the disk read request issued by the VM during the startup process is received , respectively query the disk block requested by the VM in the disk of the VM and the snapshot cache, and return to the VM when the disk block requested by the VM is found in the disk or snapshot cache of the VM. Since the snapshot cache stores the disk blocks whose frequency of use in the disk snapshot meets the set requirements, it can increase the probability that the read disk request hits the required disk block, reduce the probability of requesting the disk block from the snapshot center, and thus reduce the overall cost of the snapshot center. concurrent pressure.
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Description

technical field

[0001] The present application relates to the field of storage technologies, and in particular to a method, device and system for processing virtual machine snapshots. Background technique

[0002] A virtual machine (Virtual Machine, VM) refers to a complete computer system that is simulated by software and has complete hardware system functions and runs in a completely isolated environment. The VM runs on the host and has an independent operating environment, which is conducive to improving the security of the host and enables multiple operating systems to run on a single host, so it is becoming more and more popular.

[0003] Based on a series of advantages of VM, more and more Internet applications start to run on VM. The business traffic of Internet applications fluctuates greatly. When the business peak of Internet applications arrives, a large number of VMs need to be started in a short period of time. When a VM starts, it depends on a certain disk sn...

Claims

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