发明授权
- 专利标题: Method for recovery of data
- 专利标题(中): 数据恢复方法
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申请号: US10883299申请日: 2004-06-30
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公开(公告)号: US07296180B1公开(公告)日: 2007-11-13
- 发明人: Steven Richard Waterhouse , Sherif M. Botros , Olaf Manczak , Patrick Gates , Jeremy Werner , Sacha Arnoud
- 申请人: Steven Richard Waterhouse , Sherif M. Botros , Olaf Manczak , Patrick Gates , Jeremy Werner , Sacha Arnoud
- 申请人地址: US CA Santa Clara
- 专利权人: Sun Microsystems, Inc.
- 当前专利权人: Sun Microsystems, Inc.
- 当前专利权人地址: US CA Santa Clara
- 代理机构: Gunnison, McKay & Hodgson, L.L.P.
- 代理商 Lisa A. Norris
- 主分类号: G06F11/00
- IPC分类号: G06F11/00
摘要:
A method for recovery of data objects on a data storage system includes determining a list of layout map IDs that place data objects on a node of a data storage system. For each layout map ID, a list of object IDs associated with each of the data objects assigned the layout map ID is determined. For each object ID, a list of data object fragments associated with the object ID is determined. A determination is made whether each of the data object fragments is present on the node. If a data object fragment is not present on the node, the data object fragment is reconstructed on the data storage system. The method can be automatically implemented by each of one or more operational nodes of a distributed data storage system at configured time intervals, and/or upon the operational loss of a data storage structure of a node, or a node.
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