Data processing: database and file management or data structures – Database design – Data structure types
Reexamination Certificate
2005-06-27
2009-11-17
Cottingham, John R. (Department: 2167)
Data processing: database and file management or data structures
Database design
Data structure types
C707S793000, C709S217000
Reexamination Certificate
active
07620671
ABSTRACT:
Metadata management in a file server or storage network is delegated from a primary data processor to a secondary data processor in order to reduce data traffic between the primary data processor and the secondary data processor. The primary data processor retains responsibility for managing locks upon objects in the file system that it owns, and also retains responsibility for allocation of free blocks and inodes of the file system. By leasing free blocks and inodes to the secondary and granting locks to the secondary, the secondary can perform the other metadata management tasks such as appending blocks to a file, truncating a file, creating a file, and deleting a file.
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Jiang Xiaoye
Ma Gang
Vahalia Uresh K.
Auchterlonie Richard
Badawi Sherief
Cottingham John R.
EMC Corporation
Novak Druce & Quigg LLP
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