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.

Date of Patent:
Nov. 25, 2014

Filed:

Mar. 28, 2012
Applicants:

Raja Jayaraman, Fremont, CA (US);

James A. Rizzo, Austin, TX (US);

Rakesh Chandra, Santa Clara, CA (US);

Vinu Velayudhan, Fremont, CA (US);

Phillip V. Nguyen, San Jose, CA (US);

Inventors:

Raja Jayaraman, Fremont, CA (US);

James A. Rizzo, Austin, TX (US);

Rakesh Chandra, Santa Clara, CA (US);

Vinu Velayudhan, Fremont, CA (US);

Phillip V. Nguyen, San Jose, CA (US);

Assignee:

LSI Corporation, Milpitas, CA (US);

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06F 12/00 (2006.01); G06F 3/06 (2006.01); G06F 13/28 (2006.01); G06F 13/12 (2006.01); G06F 13/42 (2006.01);
U.S. Cl.
CPC ...
G06F 3/0683 (2013.01); G06F 3/0631 (2013.01); G06F 2206/1012 (2013.01); G06F 13/28 (2013.01); G06F 3/065 (2013.01); G06F 3/067 (2013.01); G06F 13/423 (2013.01); G06F 3/0635 (2013.01); G06F 3/0613 (2013.01); G06F 13/12 (2013.01);
Abstract

Methods and structure for load balancing of background tasks between storage controllers are provided. An exemplary active storage controller comprises a front-end interface that receives host Input/Output (I/O) requests directed to a logical volume, a back-end interface that couples with one or more of storage devices provisioning the logical volume, and a control unit. The control unit processes the host I/O requests directed to the logical volume, identifies a background processing task distinct from the host I/O requests and related to the logical volume, and assigns the background processing task to a passive storage controller for processing.


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