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RELOCATING COMPRESSED EXTENTS USING FILE-SYSTEM HOLE LIST
RELOCATING COMPRESSED EXTENTS USING FILE-SYSTEM HOLE LIST
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机译:使用文件系统孔列表重新定位压缩扩展名
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摘要
A technique for writing data in a file system includes aggregating data received in a set of I/O requests into a batch that includes multiple extents of data. After compressing a current extent of the batch and determining that the compressed extent does not fit in a space where a previous version of the extent is stored, the technique performs an FS-relocate operation by accessing an FS-hole list provided for the file system and selecting a hole, from the FS-relocate list, which is large enough to accommodate the compressed extent. The technique then places the compressed extent in the selected hole.
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