公开(公告)号：US20140101401A1

公开(公告)日：2014-04-10

申请号：US13781539

申请日：2013-02-28

Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION

Inventor： JAMES MULCAHY ,  Geraint North

IPC: G06F11/20 ,  G06F12/14

CPC classification number: G06F11/2025 ,  G06F11/2023 ,  G06F11/2038 ,  G06F11/2048 ,  G06F11/2097 ,  G06F12/145 ,  G06F2201/815

Abstract: A computer-implemented method provides checkpoint high-available for an application in a virtualized environment with reduced network demands. An application executes on a primary host machine comprising a first virtual machine. A virtualization module receives a designation from the application of a portion of the memory of the first virtual machine as purgeable memory, wherein the purgeable memory can be reconstructed by the application when the purgeable memory is unavailable. Changes are tracked to a processor state and to a remaining portion that is not purgeable memory and the changes are periodically forwarded at checkpoints to a secondary host machine. In response to an occurrence of a failure condition on the first virtual machine, the secondary host machine is signaled to continue execution of the application by using the forwarded changes to the remaining portion of the memory and by reconstructing the purgeable memory.

Abstract translation: 计算机实现的方法为网络需求降低的虚拟化环境中的应用程序提供了高可用性的检查点。 应用程序在包含第一虚拟机的主主机上执行。 虚拟化模块从第一虚拟机的存储器的一部分的应用程序接收指定为可清除存储器，其中当可清除存储器不可用时，可清除存储器可被应用程序重建。 更改被跟踪到处理器状态，而对于不可清除内存的剩余部分进行跟踪，并将更改周期性地在检查点转发到辅助主机。 响应于在第一虚拟机上发生故障状况，通过使用对存储器的剩余部分的转发改变并重构可清除存储器来发信号通知辅助主机继续执行应用程序。