On-demand virtualization for live migration in bare metal cloud

Proceedings of the 2017 Symposium on Cloud Computing Pub Date : 2017-09-24 DOI:10.1145/3127479.3129254

Jae-Hwa Im, Jongyul Kim, Jonguk Kim, Seongwook Jin, S. Maeng

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引用次数: 6

Abstract

The level of demand for bare-metal cloud services has increased rapidly because such services are cost-effective for several types of workloads, and some cloud clients prefer a single-tenant environment due to the lower security vulnerability of such enviornments. However, as the bare-metal cloud does not utilize a virtualization layer, it cannot use live migration. Thus, there is a lack of manageability with the bare-metal cloud. Live migration support can improve the manageability of bare-metal cloud services significantly. This paper suggests an on-demand virtualization technique to improve the manageability of bare-metal cloud services. A thin virtualization layer is inserted into the bare-metal cloud when live migration is requested. After the completion of the live migration process, the thin virtualization layer is removed from the host. We modified BitVisor [19] to implement on-demand virtualization and live migration on the x86 architecture. The elapsed time of on-demand virtualization was negligible. It takes about 20 ms to insert the virtualization layer and 30 ms to remove the one. After removing the virtualization layer, the host machine works with bare-metal performance.

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裸机云中实时迁移的按需虚拟化

裸机云服务的需求水平迅速增加，因为此类服务对于几种类型的工作负载具有成本效益，并且由于此类环境的安全性漏洞较低，一些云客户更喜欢单租户环境。但是，由于裸机云不利用虚拟化层，因此它不能使用实时迁移。因此，裸机云缺乏可管理性。实时迁移支持可以显著提高裸机云服务的可管理性。本文提出了一种按需虚拟化技术，以提高裸机云服务的可管理性。当需要实时迁移时，瘦虚拟化层被插入裸机云中。热迁移过程完成后，将从主机上移除精简虚拟化层。我们修改了BitVisor[19]，在x86架构上实现按需虚拟化和实时迁移。按需虚拟化的运行时间可以忽略不计。插入虚拟化层耗时约20ms，移除虚拟化层耗时约30ms。移除虚拟化层后，主机可以使用裸机性能。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Proceedings of the 2017 Symposium on Cloud Computing

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