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    • 9. 发明申请
    • FILE MANAGEMENT METHOD
    • 文件管理方法
    • WO2008113921A2
    • 2008-09-25
    • PCT/FR2008000177
    • 2008-02-12
    • STG INTERACTIVETAMAS ALEXISGRIMBERT AMAURY
    • TAMAS ALEXISGRIMBERT AMAURY
    • G06F17/30
    • G06F17/30097G06F17/30171
    • The invention relates to a file management method that comprises a first step of organising the data file base that comprises creating a tree structure of directories with M levels of N directories each, M being an integer higher than 1, and the steps of storing data files including: applying a hash function on the identifier of a data file F i to be stored, determining the path of the directory R di at several destination level in the tree structure based on the result of the preceding step, storing the data file is said R di directory determined by the hashing function at a location depending on the identifier of the data file; and data file reading steps comprising: applying the same hashing function on the identifier of the data file F j to be read, determining the path of the target directory R cj in the tree structure based on the result of the preceding step, reading the data file in said directory R cj determined by the hashing function at a location depending on the identifier of the data file.
    • 本发明涉及一种文件管理方法,该方法包括:组织数据文件库的第一步骤,该数据文件库包括创建具有M个级别的N个目录的目录的树结构,每个目录的M是大于1的整数,以及存储数据文件的步骤 包括:对要存储的数据文件F i的标识符应用散列函数,在树结构中确定几个目的地级别的目录R SUB的路径, 根据上述步骤的结果,存储数据文件是由取决于数据文件的标识符的位置处的散列函数确定的所述R<>目录; 以及数据文件读取步骤,包括:对要读取的数据文件F标识符应用相同的散列函数,确定所述目标目录R >cj中的路径 基于上述步骤的结果的树结构,根据数据文件的标识符读取由位于某个位置的散列函数确定的所述目录R cj 中的数据文件。
    • 10. 发明申请
    • METHOD FOR DETECTING THE PRESENCE OF SUBBLOCKS IN A REDUCED-REDUNDANCY STORAGE SYSTEM
    • 用于检测减少冗余存储系统中子系统存在的方法
    • WO2006094367A1
    • 2006-09-14
    • PCT/AU2006/000328
    • 2006-03-10
    • ROCKSOFT LIMITEDWILLIAMS, Ross, Neil
    • WILLIAMS, Ross, Neil
    • G06F12/12
    • G06F17/30097G06F17/30153
    • This invention provides a method and apparatus for rapidly determining whether a particular subblock of data is present in a reduced-redundancy storage system. An aspect of the invention achieves this by hashing each subblock in the storage system into a bitfilter that contains a '1' bit for each position to which at least one subblock hashes. This bitfilter provides an extremely fast way to determine whether a subblock is in the storage system. In a further aspect of the invention, index entries for new subblocks may be buffered in a subblock index write buffer so as to convert a large number of random access read and write operations into a single sequential read and a single sequential write operation. The combination of the bitfilter and the write buffer yields a reduced-redundancy storage system that uses significantly less high speed random access memory than is used by systems that store the entire subblock index in memory.
    • 本发明提供一种用于快速确定特定子数据块是否存在于减少冗余存储系统中的方法和装置。 本发明的一个方面通过将存储系统中的每个子块散列成一个位滤波器来实现这一点,该位滤波器对于至少一个子块散列到的每个位置包含'1'比特。 该位过滤器提供了一种非常快速的方法来确定子块是否在存储系统中。 在本发明的另一方面,用于新的子块的索引条目可以缓冲在子块索引写入缓冲器中,以便将大量的随机访问读取和写入操作转换为单个顺序读取和单个顺序写入操作。 位过滤器和写入缓冲器的组合产生了一种减少冗余的存储系统,其使用比存储整个子块索引在存储器中的系统使用的显着更少的高速随机存取存储器。