The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 26, 2002
Filed:
Jan. 19, 1999
Kenneth Bruce MacKenzie, Austin, TX (US);
Richard James McCarty, Austin, TX (US);
Amal Ahmed Shaheen, Austin, TX (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
A method in a computer for handling a network partition of a clustered computer system, wherein the computer is part of a number of computers located within the cluster. Data is periodically written into a data structure in a shared resource, wherein the data provides a status of the computer and wherein a data structure is associated with each cluster node. Monitoring for a partition of the cluster is performed. All data structures located in the shared resource are read in response to detecting a network partition of the cluster. A determination is made as to whether the computer is in the preferred partition, one containing the largest number of computers or is otherwise determined to be viable for continued operation. Should the computer determine that it is not a member of a preferred or otherwise viable partition, it must relinquish access to shared cluster resources requiring mutually exclusive access, such as a database on a shared disk volume. This is generally effected by the computer ceasing to operate as an active member of the cluster.