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1. 发明授权

US08554809B1 Calculating quota usage without impacting file system services 有权
标题翻译：计算配额使用而不影响文件系统服务
公开(公告)号：US08554809B1
公开(公告)日：2013-10-08
申请号：US13116913
申请日：2011-05-26
申请人： Yingchao Zhou , Wei Kang , Weigang Zhong , Chen Gong , Kevin Xu , Sitaram Pawar
发明人： Yingchao Zhou , Wei Kang , Weigang Zhong , Chen Gong , Kevin Xu , Sitaram Pawar
IPC分类号： G06F7/00
CPC分类号： G06F17/30082
摘要： An online tree quota check tool computes quota usage of files in a directory tree while the structure of the directory tree keeps changing due to concurrent write access by other applications and clients. The quota check tool computes the quota usage without interfering with the ongoing file access operations that change the directory content and quota usage. A quota check database keeps track of which files have been checked and which have not, so that each file is checked and its quota usage is accumulated once and only once while directories are moved and directory scans are restarted as a result of the changing directory content. File system operations are modified to synchronize with the online tree quota check. The quota check tool can be single threaded or multi-threaded. A multi-threaded tool dispatches idle directory iteration threads to scan subdirectories in the directory tree.
摘要翻译：在线树配额检查工具计算目录树中文件的配额使用，而目录树的结构由于其他应用程序和客户端的并发写入访问而不断变化。配额检查工具计算配额使用情况，而不会影响正在进行的文件访问操作，这些操作会更改目录内容和配额使用情况。配额检查数据库跟踪哪些文件已被检查，哪些文件没有被检查，以便每个文件被检查，并且其目录被移动并且由于更改目录内容而重新启动目录扫描时一次且仅存储一次的配额使用。文件系统操作被修改为与在线树配额检查同步。配额检查工具可以是单线程或多线程。多线程工具调度空闲的目录循环线程来扫描目录树中的子目录。

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