发明名称 |
FULL-STRIPE-WRITE PROTOCOL FOR MAINTAINING PARITY COHERENCY IN A WRITE-BACK DISTRIBUTED REDUNDANCY DATA STORAGE SYSTEM |
摘要 |
Data storage reliability is maintained in a write-back distributed data storage system including multiple nodes. Information is stored as a stripe including a collection of a data strips and associated parity strips, the stripe distributed across data and parity nodes. Each data node maintains the data strip holding a first copy of data, and each parity node maintains a parity strip holding a parity for the collection of data strips. A driver node initiates a full-stripe-write parity update protocol for maintaining parity coherency in conjunction with other nodes, to keep the relevant parity strips coherent. Parity is determined directly by computing parity strips for all data strips of a stripe. Any node may function as a driver node.
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申请公布号 |
US2011208912(A1) |
申请公布日期 |
2011.08.25 |
申请号 |
US20100710151 |
申请日期 |
2010.02.22 |
申请人 |
INTERNATIONAL BUSINESS MACHINES CORPORATION |
发明人 |
CHAMBLISS DAVID D.;HAFNER JAMES L.;THAKUR TARUN |
分类号 |
G06F12/00;G06F11/20 |
主分类号 |
G06F12/00 |
代理机构 |
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代理人 |
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