Securing crash dump files

摘要

In a computer storage system, crash dump files are secured without power fencing in a cluster of a plurality of nodes connected to a storage system. Upon an occurrence of a panic of a crashing node and prior to receiving a panic message of the crashing node by a surviving node loading, in the cluster, a capturing node to become active, prior to a totem token being declared lost by the surviving node, for capturing the crash dump files of the crashing node, while manipulating the surviving node to continue to operate under the assumption the power fencing was performed on the crashing node.

主权项

1. A system for securing crash dump files while avoiding power fencing in a cluster of a plurality of nodes connected to a storage system, the system comprising:
a power fencing device connected to each one of the plurality of nodes in a first layer, a fencing agent connected to the power fencing device in the first layer in the cluster, a proprietary fencing agent hierarchically configured in a second layer before the fencing agent and associated with each one of the plurality of nodes, a processor device controlling the plurality of nodes, the fencing agent, and the propriety fencing agent, wherein processor device:
upon an occurrence of a panic of a crashing node and prior to receiving a panic message of the crashing node by a surviving node, loads in the cluster a capturing node to become active, prior to a totem token being declared lost by the surviving node, for capturing the crash dump files of the crashing node, while manipulating the surviving node to continue to operate under the assumption the power fencing was performed on the crashing node.