VM Live Migration At Scale

[gaocegege]

https://dl.acm.org/citation.cfm?id=3186415

[gaocegege]

悲伤的是，我的 bot 不工作了

[at15]

patpat cece

[gaocegege]

VMs in GCE run under the Borg cluster manager; each virtual machine runs in its own container as a single Borg task. Tasks running under Borg are typically designed to be restarted at any time. For example, Borg optimizes for utilization and evicts jobs for better bin packing [16]. Host software upgrades are also frequent and cause termination or restart of every task on the host. Borg focuses on the overall uptime of a service that is composed of many relatively stateless instances. This focus is not a perfect fit for virtual machines, which are highly stateful and individually important.

[gaocegege]

这篇文章是在 Borg 系统上如何支持 VM 在线迁移的一个实现，基于 Borg 又实现了很多个 component 来支持这件事，值得一读。目前来看 VM 在 Borg 上的支持是通过 VM in a container 来实现的，具体也没细说。