Method and system for managing virtual machine disk

Abstract

The embodiment of the invention relates to a method and a system for managing a virtual machine disk. According to the embodiment of the invention, simplified configuration and intensive configuration are organically integrated to form a hybrid virtual machine disk management mechanism. Specifically, for the simplified configuration, if the load of the virtual machine disk is determined to be heavy or the virtual machine disk is quite busy, the simplified configuration is determined to be switched into intensive configuration. On the contrary, for the intensive configuration, if the load of the virtual machine disk is determined to be light or the virtual machine disk is quite idle, the intensive configuration is determined to be switched into the simplified configuration so as to prevent the waste of resources. In such a manner, the virtual machine storage disk management efficiency and flexibility can be effectively improved.

Description

Technical field [0001] In general, the embodiments of the present invention relate to virtual machines, and more specifically to methods and systems for managing virtual machine disks. Background technique [0002] A virtual machine (Virtual Machine, VM) refers to an application execution environment created by a specific application on the hardware platform of a physical machine, through which users can run applications and interact with them, just like using a physical machine. When creating a virtual machine, it is usually necessary to allocate a certain amount of storage resources from the storage pool (Storage Pool) of the host system hosting the virtual machine for the virtual machine to use in operation. These allocated storage resources constitute a virtual machine disk (VM disk). Virtual machine disk allocation and management is an important factor affecting virtual machine performance. Generally speaking, as known in the art, virtual machine disk management mechanisms...

AI Technical Summary

Problems solved by technology

The most important problem that frequent metadata access can cause is lock contention, which may require hardware-level changes to resolve

Second, when there are multiple thin-provisioned virtual machine disks in a system, dynamic disk space allocation and reclamation will lead to more and more fragmentation in the storage pool

Therefore, fragmentation in the storage pool needs to be regularly managed in order to make storage resources as continuous as possible, which increases the burden on the system to manage virtual machine storage

Also, currently there is no efficient disk block reclamation mechanism for thin provisioned virtual machine disks

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