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:
Dec. 27, 2011
Filed:
Dec. 28, 2009
James P. Allen, Austin, TX (US);
Kiran K. Anumalasetty, Marathalli, IN;
Sudhir Maddali, Kukatpally, IN;
Bhyrav M. Mutnury, Austin, TX (US);
James A. Pafumi, Leander, TX (US);
Sanket Rathi, Kondapur, IN;
Stephen M. Tee, Marble Falls, TX (US);
James P. Allen, Austin, TX (US);
Kiran K. Anumalasetty, Marathalli, IN;
Sudhir Maddali, Kukatpally, IN;
Bhyrav M. Mutnury, Austin, TX (US);
James A. Pafumi, Leander, TX (US);
Sanket Rathi, Kondapur, IN;
Stephen M. Tee, Marble Falls, TX (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
In virtualized environments, storage may be managed dynamically due to the changing data storage requirements. In such environments, logical storage unit identifiers (LUN IDs) may be modified as a result of deleting an existing mapping between physical storage and a virtualization server and recreating the mapping. This can result in I/O request failure. Techniques for resolving errors resulting from LUN ID modifications can be time-intensive and labor-intensive and can disrupt a communication path between a host device and the physical storage. Functionality can be implemented to dynamically identify the LUN ID modifications, determine valid LUN IDs, and retransmit failed I/O requests. This can help minimize I/O request failures due to LUN ID modifications without disrupting the communication path between the host device and the physical storage.