Efficient Live Migration of Edge Services Leveraging Container Layered Storage
Efficient Live Migration of Edge Services Leveraging Container Layered Storage
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DOI：
10.1109/tmc.2018.2871842
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发表时间：
2019-09
影响因子：
7.9
通讯作者：
Lele Ma;Shanhe Yi;Nancy Carter;Qun A. Li
中科院分区：
文献类型：
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作者：
Lele Ma;Shanhe Yi;Nancy Carter;Qun A. Li
跨边缘网络的移动的用户需要卸载服务的无缝迁移。边缘计算平台必须平滑地支持这些服务传输，并与网络中的用户移动保持同步。然而，广域网中卸载服务的实时迁移在边缘计算环境中提出了显著的服务切换挑战。在本文中，我们提出了一个边缘计算平台架构，支持卸载服务的无缝迁移，同时也保持移动的移动的用户“在服务”与其最近的边缘服务器。我们在Docker容器迁移的最先进工具中发现了一个关键问题。基于我们对Docker容器存储系统的系统研究，我们提出利用存储系统的分层特性来减少文件系统同步开销，而不依赖于分布式文件系统。与边缘环境中最先进的服务切换方法相比，我们的系统在5 Mbps（20 Mbps）网络带宽条件下的切换时间减少了80%（56%）。
Mobile users across edge networks require seamless migration of offloading services. Edge computing platforms must smoothly support these service transfers and keep pace with user movements around the network. However, live migration of offloading services in the wide area network poses significant service handoff challenges in the edge computing environment. In this paper, we propose an edge computing platform architecture which supports seamless migration of offloading services while also keeping the moving mobile user “in service” with its nearest edge server. We identify a critical problem in the state-of-the-art tool for Docker container migration. Based on our systematic study of the Docker container storage system, we propose to leverage the layered nature of the storage system to reduce file system synchronization overhead, without dependence on the distributed file system. In contrast to the state-of-the-art service handoff method in the edge environment, our system yields a 80 percent (56 percent) reduction in handoff time under 5 Mbps (20 Mbps) network bandwidth conditions.