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:
Jul. 21, 2015
Filed:
Jul. 08, 2013
International Business Machines Corporation, Armonk, NY (US);
Stephen L. Blinick, Tucson, AZ (US);
Clement L. Dickey, San Jose, CA (US);
Xioa-Yu Hu, Horgen, CH;
Nikolas Ioannou, Zurich, CH;
Ioannis Koltsidas, Zurich, CH;
Paul H. Muench, San Jose, CA (US);
Roman Pletka, Uster, CH;
Sangeetha Seshadri, Vancouver, WA (US);
INTERNATIONAL BUSINESS MACHINES CORPORATION, Armonk, NY (US);
Abstract
A computer program product, system, and method for managing metadata for caching devices during shutdown and restart procedures. Fragment metadata for each fragment of data from the storage server stored in the cache device is generated. The fragment metadata is written to at least one chunk of storage in the cache device in a metadata directory in the cache device. For each of the at least one chunk in the cache device to which the fragment metadata is written, chunk metadata is generated for the chunk and writing the generated chunk metadata to the metadata directory in the cache device. Header metadata having information on access of the storage server is written to the metadata directory in the cache device. The written header metadata, chunk metadata, and fragment metadata are used to validate the metadata directory and the fragment data in the cache device during a restart operation.