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:
Feb. 26, 2013
Filed:
Aug. 31, 2010
Karan Gupta, San Jose, CA (US);
Reshu Jain, San Jose, CA (US);
Prashant Pandey, San Jose, CA (US);
Himabindu Pucha, San Jose, CA (US);
Karan Gupta, San Jose, CA (US);
Reshu Jain, San Jose, CA (US);
Prashant Pandey, San Jose, CA (US);
Himabindu Pucha, San Jose, CA (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
Embodiments of the invention relate to block layout and block allocation in a file system to support write transactions. Regions in a cluster file system are defined to support a block allocation, include both write affinity and wide striping region. An allocation map is maintained to define and support the block allocation regions. For each write transaction, a copy of data is written to both regions, and in the event there is a shortage of blocks in one of the regions, at least one block in the other region is dynamically converted to support the write transaction.