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:
Jun. 04, 2013
Filed:
Oct. 27, 2010
Veena Ganti, Austin, TX (US);
James A. Pafumi, Leander, TX (US);
Jacob Jason Rosales, Austin, TX (US);
Morgan Jeffrey Rosas, Cedar Park, TX (US);
Vasu Vallabhaneni, Austin, TX (US);
Veena Ganti, Austin, TX (US);
James A. Pafumi, Leander, TX (US);
Jacob Jason Rosales, Austin, TX (US);
Morgan Jeffrey Rosas, Cedar Park, TX (US);
Vasu Vallabhaneni, Austin, TX (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
A method, system, and computer program product provide a shared virtual memory space via a cluster-aware virtual input/output (I/O) server (VIOS). The VIOS receives a paging file request from a first LPAR and thin-provisions a logical unit (LU) within the virtual memory space as a shared paging file of the same storage amount as the minimum required capacity. The VIOS also autonomously maintains a logical redundancy LU (redundant LU) as a real-time copy of the provisioned/allocated LU, where the redundant LU is a dynamic copy of the allocated LU that is autonomously updated responsive to any changes within the allocated LU. Responsive to a second VIOS attempting to read a LU currently utilized by a first VIOS, the read request is autonomously redirected to the logical redundancy LU. The redundant LU can be utilized to facilitate migration of a client LPAR to a different computing electronic complex (CEC).