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    • 3. 发明授权
    • Virtual block mapping for relocating compressed and/or encrypted file data block blocks
    • 用于重新定位压缩和/或加密的文件数据块块的虚拟块映射
    • US08190850B1
    • 2012-05-29
    • US12571007
    • 2009-10-01
    • William C. DavenportPhilippe ArmangauSairam VeeraswamyJean-Pierre BonoYubing Wang
    • William C. DavenportPhilippe ArmangauSairam VeeraswamyJean-Pierre BonoYubing Wang
    • G06F12/00
    • G06F17/30067G06F11/1471
    • This invention is a system and a method for operating a storage server to provide read or write access to a data in a data network using a new architecture. The method of creating virtual block mapping pointer in response to a request by a client of the storage server to de-duplicate the file system data block or to allow compression of one or more file system data blocks into one or more physical data blocks. Further, the method relocates one or more file system data blocks from one part of the file system address space to another by using one or more virtual block mapping pointers that provides the mapping information for the one or more file system data blocks that are being relocated. The virtual block mapping pointer allows relocating of file system data blocks by same number of metadata operations regardless of number of files sharing the block that are being relocated and the state of those blocks (compressed or not).
    • 本发明是一种用于操作存储服务器以使用新架构提供对数据网络中的数据的读取或写入访问的系统和方法。 响应于存储服务器的客户端的请求来创建虚拟块映射指针的方法,以解除对文件系统数据块的复制或允许将一个或多个文件系统数据块压缩成一个或多个物理数据块。 此外,该方法通过使用一个或多个虚拟块映射指针将一个或多个文件系统数据块从文件系统地址空间的一部分重新定位到另一个,虚拟块映射指针为正被重定位的一个或多个文件系统数据块提供映射信息 。 虚拟块映射指针允许通过相同数量的元数据操作重新定位文件系统数据块,而不管共享被重新定位的块的文件数量以及这些块的状态(是否被压缩)。