Note: File Recipe Compression in Data Deduplication Systems

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Note: File Recipe Compression in Data Deduplication Systems

Zero-Chunk Suppression 检测全0数据块,将其用预先计算的自身的指纹信息代替. Detect zero chunks and replace them with a special code word by pre-calculating the fingerprint of the chunk filled with zeros. Chunk Index Page-oriented Approach 通过数据块索引来分配编码,假设使用基于分页的磁盘的哈希表来实现块索引,并且…

论文阅读 Prefetch-aware fingerprint cache management for data deduplication systems

论文链接 https://link.springer.com/article/10.1007/s11704-017-7119-0 这篇论文试图解决的问题是在cache 环节之前,prefetch-cache 进来的可能无关的 fingerprint 造成的cache pollution问题,即可能把没有用的 fingerprint 换入 cache,造成 cache 污染的问题. 这篇论文的贡献:提出了一种新的针对 prefetch 进来的 fingerprint 替换策略,并且提出了一种 ad…

Data Deduplication Workflow Part 1

Data deduplication provides a new approach to store data and eliminate duplicate data in chunk level. A typical data deduplication workflow can be explained like this. File metadata describes how to restore the file use unique chunks. Chunk level ded…

salt-stack "No Top file or external nodes data matches found"解决

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