Patent ID: 7096333
Filing Date: 2006-08-22
Classification: G06F,H04L

Abstract:
1. A method for controlling multi-node access to a disk storage system, wherein the disk storage system is a volume group containing a plurality of disk drives, the volume group accessible by a cluster multiprocessing application that provides application layer access from a first and a second node to the volume group, said method comprising: responsive to a volume group startup instruction received by the cluster multiprocessing application, initializing the volume group, wherein said initializing the volume group includes blocking write access from each of the first and second nodes to the disk drives within the volume group; and following said initializing: setting an active access authorization for a first node, wherein the active access authorization enables read and write access by the first node to user and meta data within the disk storage system; and setting a passive access authorization for a second node, wherein the passive access authorization enables read-only access by the second node to meta data within the disk storage system and prevents access by the second node to file system user data within the disk storage system.