LinuxCon + CloudOpen + ELC-E Europe 2014

We have proposed a redundant block disk interface for storing virtual machine (VM) disk images. The paper is available at http://member.wide.ad.jp/~shima/publications/20131209-ccsna-ukai.pdf. The key function of the interface is that an operator has full control over where to store disk images on which distributed storage nodes. This is important especially when a VM infrastructure is deployed over many different geographical locations. VMs are sometimes moved across hypervisors due to resource constraint or maintenance operations. It is a serious problem how effectively the virtual machines contact to their storage images when moving. By acquiring full control on a disk image migration decision, an operator can move related disk images to nearer location of the moving VMs. This presentation will show the design of the proposed system and the current status of OpenStack integration.