发明授权
US08745338B1 Overwriting part of compressed data without decompressing on-disk compressed data
有权
在不压缩磁盘压缩数据的情况下覆盖部分压缩数据
- 专利标题： Overwriting part of compressed data without decompressing on-disk compressed data
- 专利标题（中）： 在不压缩磁盘压缩数据的情况下覆盖部分压缩数据
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申请号： US13099283申请日： 2011-05-02
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公开(公告)号： US08745338B1公开(公告)日： 2014-06-03
- 发明人: Sandeep Yadav , Rickard E. Faith , Subramaniam Periyagaram , Blake Lewis , Ashish Prakash
- 申请人： Sandeep Yadav , Rickard E. Faith , Subramaniam Periyagaram , Blake Lewis , Ashish Prakash
- 申请人地址： US CA Sunnyvale
- 专利权人： NetApp, Inc.
- 当前专利权人： NetApp, Inc.
- 当前专利权人地址： US CA Sunnyvale
- 代理机构： DeLizio Gilliam, PLLC
- 主分类号： G06F3/044
- IPC分类号： G06F3/044 ; G06F17/30
摘要：
Overwriting part of compressed data without decompressing on-disk compressed data is implemented by receiving a write request for a block of data in a compression group from a client, wherein the compression group comprises a group of data blocks that is compressed, wherein the block of data is uncompressed. The storage server partially overwrites the compression group, wherein the compression group remains compressed while the partial overwriting is performed. The storage server determines whether the partially overwritten compression group including the uncompressed block of data should be compressed. The storage server defers compression of the partially overwritten compression group if the partially overwritten compression group should not be compressed. The storage server compresses the partially overwritten compression group if the partially overwritten compression group should be compressed.
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