基于qcow2镜像格式的快照技术  

Snapshot technology based on qcow2 image format

作　　者：陈春媛[1] Chen Chunyuan(Guangxi Radio and Television Monitoring Center,Nanning Guangxi 530000,China)

机构地区：[1]广西广播电视监测中心,广西南宁530000

出　　处：《信息与电脑》2017年第1期34-35,共2页Information & Computer

摘　　要：一个qcow2镜像可以用来保存其他镜像的变化部分,从而不实际影响到原有磁盘的内容。qcow2格式的镜像快照文件内容很少,占用的虚拟磁盘空间不大,每次快照过程都可在一分钟以内完成,主备镜像中所有数据仅存在这一分钟的差异,这样就保持主备机状态的高一致性,可实现主备虚拟机应用及硬盘数据的同步。A qcow2 image can be used to hold changes to other mirrors,so that it does not actually affect the contents of the original disk.Qcow2 format mirror snapshot file content is very small,and the amount of virtual disk space occupied is not large.Each snapshot process can be completed within one minute,all data in the primary and secondary mirrors only exist for this minute difference,so that maintain the high consistency of the main machine state and achieve synchronization of main and virtual machine applications and hard disk data.

关 键 词：qcow2镜像 快照 虚拟 

分 类 号：TP333[自动化与计算机技术—计算机系统结构]