发明授权
US08914668B2 Asynchronous raid stripe writes to enable response to media errors
有权
异步RAID条带写入,以响应媒体错误
- 专利标题: Asynchronous raid stripe writes to enable response to media errors
- 专利标题(中): 异步RAID条带写入,以响应媒体错误
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申请号: US13605350申请日: 2012-09-06
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公开(公告)号: US08914668B2公开(公告)日: 2014-12-16
- 发明人: Gary D. Cudak , Christopher J. Hardee , Randall C. Humes , Adam Roberts
- 申请人: Gary D. Cudak , Christopher J. Hardee , Randall C. Humes , Adam Roberts
- 申请人地址: US NY Armonk
- 专利权人: International Business Machines Corporation
- 当前专利权人: International Business Machines Corporation
- 当前专利权人地址: US NY Armonk
- 代理商 Katherine S. Brown; Jeffrey L. Streets
- 主分类号: G06F11/00
- IPC分类号: G06F11/00
摘要:
A method includes detecting that a first file and a second file are duplicates, and storing the first file and the second file to a target storage device. Metadata is written to the target storage device in association with the first file, wherein the metadata identifies the location of the second file that is a duplicate of the first file. Later, an application program requests a first read operation to read the first file. In response to a media error that results from the first read operation, the target storage device reads the metadata associated with the first file to identify the location of the second file, performs a second read operation to read the second file instead of the first file, and provides the second file to the application program in satisfaction of the requested first read operation.
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