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    • 4. 发明授权
    • Method and system for efficient generation of storage reports
    • 有效生成存储报告的方法和系统
    • US07552115B2
    • 2009-06-23
    • US11107977
    • 2005-04-15
    • Ran KalachJames R. BentonPaul Adrian OlteanGeorgi M. Matev
    • Ran KalachJames R. BentonPaul Adrian OlteanGeorgi M. Matev
    • G06F17/30G06F7/08G06F7/16
    • G06F3/0653G06F3/0605G06F3/0689G06F11/3485G06F2201/88Y10S707/99933Y10S707/99934Y10S707/99945
    • Described is a method and system by which reports of storage usage in computer systems are generated in an efficient manner by consolidating multiple requests for reports into a minimal number of volume scans, including by intelligently selecting a scanning method (e.g., of file system metadata versus find-first/find-next) and by performing parallel scans on different volumes. Namespace consolidation scans namespaces together, so as to generate multiple reports from the same set of files, reducing the number of volumes scans required to collect the data. Each volume scan may be a find-first, find next directory-based scan, or a volume metadata database scan. Time consolidation groups independent storage report generations together, such as storage report requests received within an administrator-specified interval. Parallel scans of different volumes may be performed, subject to I/O and processing resource limitations, and so that volumes partitioned on the same spindle are not scanned in parallel.
    • 描述了一种方法和系统,通过该方法和系统通过将报告的多个请求整合到最小数量的卷扫描中,包括通过智能地选择扫描方法(例如,文件系统元数据与 find-first / find-next),并对不同卷执行并行扫描。 命名空间合并将命名空间一起扫描,以便从同一组文件生成多个报告,从而减少收集数据所需的卷扫描次数。 每个卷扫描可以是查找优先,查找下一个基于目录的扫描或卷元数据数据库扫描。 时间合并将独立的存储报告代码组合在一起,例如在管理员指定的时间间隔内收到的存储报告请求。 可能会执行不同卷的并行扫描,受到I / O和处理资源限制的影响,因此不会同时扫描在同一主轴上分区的卷。
    • 5. 发明授权
    • Generating storage reports using volume snapshots
    • 使用卷快照生成存储报告
    • US07548939B2
    • 2009-06-16
    • US11107119
    • 2005-04-15
    • Ran KalachJames R. BentonPaul Adrian Oltean
    • Ran KalachJames R. BentonPaul Adrian Oltean
    • G06F17/30
    • G06F11/3409G06F11/3485Y10S707/99953Y10S707/99954
    • Described is a method and system by which storage reports are generated from a volume snapshot set, rather than from a live volume. A volume snapshot set includes a representation or copy of a volume at a single point in time. By scanning the snapshot, a consistent file system image is obtained. Scanning may take place by enumerating a volume's directories of files, or, when available, by accessing a file system metadata of file information (e.g., a master file table) separately maintained on the volume. With some (e.g., hardware-based) snapshot technologies, the snapshot can be transported to another computing system for scanning by that other computing system, thereby avoiding burdening a live system's resources when scanning. Accurate and consistent storage reports are thus obtained at a single point in time, independent of the number of volumes being scanned.
    • 描述了一种方法和系统,通过该方法和系统从卷快照集生成存储报告,而不是从实时卷生成。 卷快照集包括在单个时间点的卷的表示或副本。 通过扫描快照,获得一致的文件系统映像。 可以通过枚举卷的文件目录,或者在可用时通过访问单独维护在卷上的文件信息(例如,主文件表)的文件系统元数据来进行扫描。 利用一些(例如基于硬件的)快照技术,快照可以被传送到另一个计算系统,以便由其他计算系统进行扫描,从而避免在扫描时负担现场系统的资源。 因此,在单个时间点上获得了准确和一致的存储报告,与被扫描的卷数无关。
    • 6. 发明授权
    • Storage reports duplicate file detection
    • 存储报告重复文件检测
    • US07401080B2
    • 2008-07-15
    • US11206710
    • 2005-08-17
    • James R. BentonRan KalachPaul Adrian OlteanGeorgi M. Matev
    • James R. BentonRan KalachPaul Adrian OlteanGeorgi M. Matev
    • G06F12/06
    • G06F17/30097Y10S707/99937
    • Described is a storage reports duplicate file detector that operates by receiving file records during a first scan of file system metadata. The detector computes a hash based on attributes in the record, and maintains the hash value in association with information that indicates whether a hash value corresponds to more than one file. In one implementation, the information corresponds to the amount of space wasted by duplication. The information is used to determine which hash values correspond to groups of potentially duplicate files, and eliminate non-duplicates. A second scan locates file information for each of the potentially duplicate files, and the file information is then used to determine which groups of potentially duplicate files are actually duplicate files.
    • 描述的是存储报告重复文件检测器,其通过在文件系统元数据的第一次扫描期间接收文件记录来操作。 检测器基于记录中的属性来计算散列,并且将哈希值与指示散列值是否对应于多于一个文件的信息相关联地维护。 在一个实现中,信息对应于通过重复浪费的空间量。 该信息用于确定哪些哈希值对应于潜在重复文件的组,并消除不重复的数据。 第二次扫描查找每个潜在重复文件的文件信息,然后使用文件信息来确定哪些可能重复的文件组实际上是重复的文件。
    • 7. 发明授权
    • Storage reports file system scanner
    • 存储报告文件系统扫描器
    • US07401089B2
    • 2008-07-15
    • US11206425
    • 2005-08-17
    • James R. BentonRan KalachPaul Adrian OlteanSarosh C. Havewala
    • James R. BentonRan KalachPaul Adrian OlteanSarosh C. Havewala
    • G06F17/30
    • G06F17/30067Y10S707/99942
    • Described is a storage reports scanner that works to generate reports of storage usage in computer systems in an efficient manner. The scanner receives a set of namespaces for a file system volume from a storage reports engine. The scanner scans file system metadata to construct a directory table of entries corresponding to a directory tree of nodes representative of the hierarchy of directories of the file system volume. Each node corresponding to a namespace in the namespace set is marked as included. A second scan of the file system metadata determines, for each file, whether that file is in or under an included directory by accessing the directory table. For each file that is in or is under an included directory, file information is returned to the engine. The engine may request the scanner to provide full path information, which the scanner determines via the directory table.
    • 描述了一种存储报告扫描器,用于以有效的方式生成计算机系统中的存储使用的报告。 扫描仪从存储报告引擎接收一组文件系统卷的命名空间。 扫描仪扫描文件系统元数据以构成与表示文件系统卷的目录的层次结构的节点的目录树相对应的条目的目录表。 与命名空间集中的命名空间相对应的每个节点都被标记为包含。 对于每个文件,文件系统元数据的第二次扫描是通过访问目录表来确定该文件是否在所包含的目录中或之下。 对于位于或位于所包含的目录中的每个文件,文件信息将返回引擎。 引擎可以请求扫描仪提供完整路径信息,扫描仪通过目录表确定。