Patent ID: 9043636
Filing Date: 2015-05-26
Classification: G06F,H04L

Abstract:
1. A method of fencing in a cluster system comprising a plurality of physical nodes including a management node, each physical node being capable of running at least one virtual machine, the method comprising: a first physical node of the cluster system: receiving, from the management node, a fence operation command to prevent a target virtual machine from accessing shared resources of the cluster system, the fence operation command including information identifying the target physical node running the target virtual machine; and in response to determining that the first physical node is capable of performing the fence operation command, determining a fence device on the first physical node that corresponds to the fence operation command, and activating the determined fence device such that the fence device performs a fence operation on the target virtual machine according to the fence operation command whereby the target virtual machine on the target physical node is prevented from accessing shared resources of the cluster system and another virtual machine running on the target physical node is not prevented from accessing shared resources of the cluster system.