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为了满足同一台物理计算机上不同虚拟机的I/O访问的不同需求,提高虚拟机存储的使用效率和缩短响应时间,本文提出一种基于软件RAID和LVM相结合的分层虚拟机存储方案。通过SSD和SAS高低搭配的磁盘阵列实现了虚拟机按照I/O访问的频率高低分别存储于高、低速磁盘中,并可以根据虚拟机I/O热度的变化进行存储区域的迁移。
In order to meet the different requirements of I / O access to different virtual machines on the same physical computer, to improve the utilization efficiency of virtual machine storage and to shorten the response time, a layered virtual machine storage scheme based on software RAID and LVM is proposed in this paper. The combination of SSDs and SAS disks enables the VMs to be stored in high and low speed disks according to the frequency of I / O accesses. The storage area can be migrated according to the change of the I / O temperature of the VMs.