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1. 发明授权

US08407191B1 Priority based data scrubbing on a deduplicated data store 有权
标题翻译：在重复数据删除的数据存储上进行基于优先级的数据擦除
公开(公告)号：US08407191B1
公开(公告)日：2013-03-26
申请号：US12826131
申请日：2010-06-29
申请人： Kumari Bijayalaxmi Nanda
发明人： Kumari Bijayalaxmi Nanda
IPC分类号： G06F17/30
CPC分类号： G06F17/30156
摘要： Deduplicated data objects are scrubbed by a executing a priority scrubbing task that scans the deduplicated data objects and applies a condition that enables priority data scrubbing based on the value of at least one attribute of the de-duplicated data objects. For example, a low priority task scrubs a deduplicated data object when a reference count of the deduplicated object reaches a threshold. A high priority task scrubs a deduplicated data object when a priority attribute indicates that the deduplicated data object is used by a critical source data object. A medium priority task scrubs a deduplicated data object when the access frequency of the deduplicated data object reaches a threshold. The condition may encode a scrubbing policy or heuristic, and may trigger further action in addition to scrubbing, such as triggering an update of the access rate.
摘要翻译：通过执行扫描重复数据删除的数据对象的优先级擦除任务来擦除重复数据删除的数据对象，并应用基于去重复数据对象的至少一个属性的值来启用优先级数据擦除的条件。例如，当重复数据删除的对象的引用计数达到阈值时，低优先级任务会擦除重复数据删除的数据对象。当优先级属性指示重要数据对象被关键源数据对象使用时，高优先级任务会擦除重复数据删除的数据对象。当重复数据删除的数据对象的访问频率达到阈值时，中等优先级任务会擦除重复数据删除的数据对象。该条件可以编码洗涤策略或启发式，并且除了擦除之外还可以触发进一步的动作，例如触发访问速率的更新。

2. 发明授权

US08818966B1 Continuous file defragmentation during file over-writes 有权
标题翻译：在文件重写期间连续文件碎片整理
公开(公告)号：US08818966B1
公开(公告)日：2014-08-26
申请号：US12982724
申请日：2010-12-30
申请人： Kumari Bijayalaxmi Nanda
发明人： Kumari Bijayalaxmi Nanda
IPC分类号： G06F7/00 , G06F17/00
CPC分类号： G06F17/30135
摘要： When a file system manager responds to a request to write data to a specified number of blocks of a file, the file system manager determines that corresponding file system data block allocations exist and determines that the file is fragmented over the corresponding file system data block allocations. In response to determining that the file is fragmented over the corresponding file system data block allocations, the file system manager allocates and substitutes a single extent of contiguous file system data blocks for the corresponding file system data block allocations, and writes data to the newly allocated contiguous file system data blocks. For example, the file system manager compares a spread and a count of extent fragments of the file system data block allocations to appropriate thresholds to trigger the defragmentation upon file over-write.
摘要翻译：当文件系统管理员响应将数据写入指定数量的文件块的请求时，文件系统管理器确定存在相应的文件系统数据块分配，并确定该文件在相应的文件系统数据块分配上分段。响应于确定文件在相应的文件系统数据块分配上被分段，文件系统管理器分配并替代相应文件系统数据块分配的连续文件系统数据块的单个范围，并将数据写入新分配连续的文件系统数据块。例如，文件系统管理器将文件系统数据块分配的扩展片段和扩展片段的计数与适当的阈值进行比较，以触发文件重写时的碎片整理。

3. 发明授权

US09020987B1 Managing updating of metadata of file systems 有权
标题翻译：管理文件系统元数据的更新
公开(公告)号：US09020987B1
公开(公告)日：2015-04-28
申请号：US13171869
申请日：2011-06-29
申请人： Kumari Bijayalaxmi Nanda , Sitaram Pawar
发明人： Kumari Bijayalaxmi Nanda , Sitaram Pawar
IPC分类号： G06F7/00 , G06F17/00 , G06F17/30
CPC分类号： G06F17/30289 , G06F3/06 , G06F11/14 , G06F11/1435 , G06F11/1471 , G06F17/30144
摘要： A method is used in managing updating of metadata of file systems. Changes in metadata of a file of a file system are stored in a journal upon receiving an I/O request for the file of the file system. The I/O request results in update of metadata of the file of the file system. The journal includes metadata transactions upon the file system. Changes to metadata of the file are stored in a volatile memory of a data storage system upon receiving subsequent I/O requests resulting in update of metadata of the file of the file system. Metadata of the file of the file system is updated with information derived from metadata changes stored in the journal.
摘要翻译：一种方法用于管理文件系统元数据的更新。文件系统的文件的元数据的变化在接收到文件系统的文件的I / O请求时被存储在日志中。 I / O请求导致更新文件系统文件的元数据。该杂志包括文件系统上的元数据事务。在接收到导致更新文件系统的文件的元数据的后续I / O请求时，将文件的元数据的变化存储在数据存储系统的易失性存储器中。使用从存储在日志中的元数据更改导出的信息更新文件系统文件的元数据。

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