US 10,503,419 B2 · Controlling storage access by clustered nodes

Abstract

Embodiments provide a method and system for enabling access to a storage device. Specifically, a node may request admittance to a cluster that has read and write access to a storage device. The node seeking access to the storage device must be first be approved by other nodes in the cluster. As part of the request, the node seeking access to the storage device sends a registration key to a storage device. Upon expiration of a registration timer, the node seeking access to the storage device receives a registration table from the storage device and determines whether its registration key is stored in the registration table. If the registration key is stored in the registration table the node has been accepted in the cluster and as a result, has been granted read and write access to the storage device.

Claims20

Dependent claims

A method for controlling access to a storage device connected to a plurality of nodes in a cluster by one or more physical and remote paths, the method comprising:

receiving a command from a node having a physical connection and a remote connection to the storage device;
subsequent to the node losing the physical connection to the storage device, receiving a subsequent command;
identifying a path from which the subsequent command was received;
determining that the path from which the subsequent command was received indicates that the subsequent command is from the node having lost the physical connection;
and
based on the determination that the subsequent command is from the node having lost the physical connection, rejecting the subsequent command.

3 more elements

Dependencies are inferred from the claim text.

Controlling storage access by clustered nodes

Life of this patent

Controlling storage access by clustered nodes

Life of this patent

Abstract

Claims20