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:
Jan. 28, 2014
Filed:
Feb. 02, 2007
Suparna Bhattacharya, Karnataka, IN;
Mingming Cao, Portland, OR (US);
David J. Kleikamp, Cedar Park, TX (US);
Theodore Y. T. Tso, Medford, MA (US);
Suparna Bhattacharya, Karnataka, IN;
Mingming Cao, Portland, OR (US);
David J. Kleikamp, Cedar Park, TX (US);
Theodore Y. T. Tso, Medford, MA (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
A method and apparatus are provided for pre-allocating non-initialized blocks of data in a file system. Each file contains a primary i-node to maintain file metadata. A secondary i-node is created and associated with the primary i-node. The secondary i-node contains non-initialized data blocks, and the primary i-node contains valid and initialized data blocks. A write operation to a non-initialized data block in a pre-allocated range stored in the secondary i-node directs the data block from the secondary i-node to the primary i-node.