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:
Jun. 29, 2021

Filed:

Feb. 03, 2020
Applicant:

Emc Ip Holding Company Llc, Hopkinton, MA (US);

Inventors:

Jack Fu, Brighton, MA (US);

Jaeyoo Jung, Shrewsbury, MA (US);

Arieh Don, Newton, MA (US);

Assignee:

EMC IP Holding Company LLC, Hopkinton, MA (US);

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06F 12/00 (2006.01); G06F 12/0888 (2016.01); G06F 3/06 (2006.01); G06F 12/084 (2016.01); G06F 12/0875 (2016.01);
U.S. Cl.
CPC ...
G06F 12/0888 (2013.01); G06F 3/0604 (2013.01); G06F 3/067 (2013.01); G06F 3/0635 (2013.01); G06F 12/084 (2013.01); G06F 12/0875 (2013.01); G06F 2212/452 (2013.01); G06F 2212/621 (2013.01);
Abstract

A host system may be cache-slot aware such that the host system can distribute IOs to processing nodes on a storage system according to cache slot boundaries. A multi-path driver of the host system may determine the cache slot size from one or more communications exchanged with the storage system. The multi-path driver may transition between processing nodes according to slot cache slot boundaries. For IO operations having data portions smaller than the cache slot size, the MP driver may direct multiple IO operations to a same processing node until the collective size of data portions fills a cache slot. For IO operations having a data portion larger than the cache slot, the MP driver may divide the IO operation into sequential IO operations having data portions of a same size as a cache slot, and may transition between processing nodes for each IO operation or a multiple thereof.


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