Title: Memory controlling device and operating method thereof
Application Number: 03147578 Application Date: 2003.07.24
Publication Number: 1504894 Publication Date: 2004.06.16
Approval Pub. Date: 2006.02.08 Granted Pub. Date: 2006.02.08
International Classifi-cation: G06F12/00,C06F3/00
Applicant(s) Name: IBM Address:
Inventor(s) Name: Carlos F. Fuent
Attorney & Agent: di wankui huang xiaolin
Abstract:
     A storage controller in a network comprises an I/O performing component, a component to assign ownership of metadata for data to an owner storage controller node, a lock manager to control locking of metadata, during I/O, and a messaging component to pass messages between storage controller nodes to request metadata state, grant locks, request release of locks, and signal lock release. The I/O is performed on data whose metadata is owned by any owner storage controller node, subject to compliance with metadata lock protocols controlled by the owner storage controller, and any copy of the data held from time to time is maintained in a coherency relation with the data.
Time: 13
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