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    Handling file operations with low persistent storage space
    11.
    发明授权
    Handling file operations with low persistent storage space 有权
    处理具有低持久存储空间的文件操作

    公开(公告)号：US08402008B2

    公开(公告)日：2013-03-19

    申请号：US12879887

    申请日：2010-09-10

    申请人： Janet E. Adkins ,  Matthew T. Brandyberry ,  David J. Craft ,  Manoj N. Kumar ,  Andrew N. Solomon

    发明人： Janet E. Adkins ,  Matthew T. Brandyberry ,  David J. Craft ,  Manoj N. Kumar ,  Andrew N. Solomon

    IPC分类号： G06F7/00 ,  G06F17/00

    CPC分类号： G06F17/30088

    摘要： In some embodiments, a file management unit located in the operating system detects a write operation that writes the data blocks within the consistency snapshot (in main memory) to the persistent storage. The file management unit can then determine that all transactions have been completed before the write operation begins. In some instances, the file management unit then attempts to write the data blocks within the consistency snapshot to the persistent storage. The file management unit can then receive a notification that the write operation did not successfully write the data blocks from the consistency snapshot to the persistent storage. In some embodiments, the write operation is not successful because there are fewer free data blocks in the persistent storage than needed for writing the data blocks within the consistency snapshot to persistent storage. The file management can then wait a period of time. After the file management unit has waited for a period of time, it can make another attempt to write the data blocks within the consistency snapshot to the persistent storage.

    摘要翻译： 在一些实施例中，位于操作系统中的文件管理单元检测将持续存储器内的一致性快照（主存储器）内的数据块写入的写入操作。 然后，文件管理单元可以在写操作开始之前确定所有事务已经完成。 在某些情况下，文件管理单元然后尝试将一致性快照内的数据块写入持久存储器。 文件管理单元然后可以接收到写入操作没有成功地将数据块从一致性快照写入永久存储器的通知。 在一些实施例中，写入操作不成功，因为永久存储器中的空闲数据块比将一致性快照中的数据块写入永久存储器所需要的少。 然后，文件管理可以等待一段时间。 文件管理单元等待一段时间后，可以再次尝试将一致性快照中的数据块写入永久存储。

    File removal with no available disk blocks in redirect-on-write file systems
    12.
    发明授权
    File removal with no available disk blocks in redirect-on-write file systems 失效
    在重定向写入文件系统中没有可用磁盘块的文件删除

    公开(公告)号：US08401995B2

    公开(公告)日：2013-03-19

    申请号：US12879834

    申请日：2010-09-10

    申请人： Janet E. Adkins ,  David J. Craft ,  Andrew N. Solomon

    发明人： Janet E. Adkins ,  David J. Craft ,  Andrew N. Solomon

    IPC分类号： G06F7/00 ,  G06F17/00

    CPC分类号： G06F17/30138 ,  G06F17/30117

    摘要： Embodiments include a method for removing a file within a redirect-on-write file system. In some embodiments, a file removal operation is detected in a file management unit, which resides in a memory unit. It is then determined that the number of free data blocks in the persistent storage is below a minimum threshold. The file removal operation is written to a log used for storing system operations. A file management unit is notified of the successful write of the file removal operation to the log used for storing system operations. The data blocks are moved from the file selected for removal to a list of free data blocks. The indirect blocks from the file selected for removal are moved to a data block removal list.

    摘要翻译： 实施例包括用于在写入重定向文件系统中移除文件的方法。 在一些实施例中，在位于存储器单元中的文件管理单元中检测文件删除操作。 然后确定持久存储器中的空闲数据块的数量低于最小阈值。 文件删除操作被写入用于存储系统操作的日志。 通知文件管理单元成功写入文件删除操作到用于存储系统操作的日志。 数据块从被选择删除的文件移动到空闲数据块的列表。 选择要删除的文件的间接块被移动到数据块删除列表。

    HIERARCHICAL NETWORK FAILURE HANDLING IN A CLUSTERED NODE ENVIRONMENT
    15.
    发明申请
    HIERARCHICAL NETWORK FAILURE HANDLING IN A CLUSTERED NODE ENVIRONMENT 有权
    分层节点环境中的分层网络故障处理

    公开(公告)号：US20130039166A1

    公开(公告)日：2013-02-14

    申请号：US13209104

    申请日：2011-08-12

    申请人： William B. Brown ,  Robert K. Gjertsen ,  David J. Craft

    发明人： William B. Brown ,  Robert K. Gjertsen ,  David J. Craft

    IPC分类号： H04L12/26

    CPC分类号： H04L41/0659

    摘要： According to one aspect of the present disclosure, a method and technique for hierarchical network failure handling in a clustered node environment is disclosed. The method includes: detecting a network failure by a node in a cluster, the cluster having plural nodes arranged in a hierarchy, wherein the network failure is associated with a subordinate node in the hierarchy to the detecting node; communicating the network failure from the detecting node to a superior node in the hierarchy; determining whether the network failure affects nodes higher than the detecting node in the hierarchy; and responsive to determining that the network failure does not affect nodes higher than the detecting node in the hierarchy, the detecting node initiating a protocol to expel the subordinate node from the cluster.

    摘要翻译： 根据本公开的一个方面，公开了一种用于在集群节点环境中分级网络故障处理的方法和技术。 该方法包括：通过集群中的节点检测网络故障，所述集群具有排列在层次结构中的多个节点，其中所述网络故障与所述层级中的下级节点与所述检测节点相关联; 将网络故障从检测节点传送到层次结构中的上级节点; 确定网络故障是否影响高于层次结构中的检测节点的节点; 并且响应于确定所述网络故障不影响所述层级中的所述检测节点以上的节点，所述检测节点发起将所述下级节点从所述群集排除的协议。

    INDEPENDENT FILESET GENERATIONS IN A CLUSTERED REDIRECT-ON-WRITE FILESYSTEM
    17.
    发明申请
    INDEPENDENT FILESET GENERATIONS IN A CLUSTERED REDIRECT-ON-WRITE FILESYSTEM 有权
    一个集中的重写式文件系统中的独立FILESET生成

    公开(公告)号：US20120150800A1

    公开(公告)日：2012-06-14

    申请号：US12963068

    申请日：2010-12-08

    申请人： Janet E. Adkins ,  Joon Chang ,  David J. Craft ,  Manoj N. Kumar ,  Andrew N. Solomon

    发明人： Janet E. Adkins ,  Joon Chang ,  David J. Craft ,  Manoj N. Kumar ,  Andrew N. Solomon

    IPC分类号： G06F17/00

    CPC分类号： G06F17/30088

    摘要： Maintaining a generation value for each fileset that is distinct from a corresponding fileset manager preserves the independence of nodes while also allowing distributed fileset management. A fileset manager can maintain a value that reflects consistency snapshots for that node (“node generation”) separately from a value that reflects consistency snapshots for a particular fileset (“fileset generation”).

    摘要翻译： 维护与相应文件集管理器不同的每个文件集的生成值保留节点的独立性，同时还允许分布式文件集管理。 文件集管理器可以将反映该节点（“节点生成”）的一致性快照的值与反映特定文件集（“文件集生成”）的一致性快照的值分开保留。

    Legacy Data Managment
    18.
    发明申请
    Legacy Data Managment 有权
    遗留数据管理

    公开(公告)号：US20120131274A1

    公开(公告)日：2012-05-24

    申请号：US12951136

    申请日：2010-11-22

    申请人： David J. Craft

    发明人： David J. Craft

    IPC分类号： G06F12/00 ,  G06F12/02

    CPC分类号： G06F3/0607 ,  G06F3/0638 ,  G06F3/067 ,  G06F17/30221

    摘要： Various systems, processes, products, and techniques may be used to manage legacy data. In one general implementation, a system, process, and/or product for managing legacy data may include the ability to determine whether a data request has been received and, if a data request has been received, determine whether the data request is associated with legacy data of an external storage management system. If the data request is not associated with legacy data of an external storage management system, the system, process, and/or product may retrieve data from a local storage array, and if the data request is associated with legacy data of an external storage management system, the system, process, and/or product may request legacy data from an external storage management system. The system, process, and/or product may also generate a response to the data request.

    摘要翻译： 可以使用各种系统，过程，产品和技术来管理遗留数据。 在一般的实现中，用于管理遗留数据的系统，过程和/或产品可以包括确定是否已经接收到数据请求的能力，并且如果已经接收到数据请求，则确定数据请求是否与遗留相关联 外部存储管理系统的数据。 如果数据请求不与外部存储管理系统的旧数据相关联，则系统，进程和/或产品可以从本地存储阵列检索数据，并且如果数据请求与外部存储管理的旧数据相关联 系统，系统，过程和/或产品可以从外部存储管理系统请求遗留数据。 系统，过程和/或产品还可以产生对数据请求的响应。

    DISTRIBUTED FILE HIERARCHY MANAGEMENT IN A CLUSTERED REDIRECT-ON-WRITE FILE SYSTEM
    19.
    发明申请
    DISTRIBUTED FILE HIERARCHY MANAGEMENT IN A CLUSTERED REDIRECT-ON-WRITE FILE SYSTEM 失效
    分布式重写文件系统中的分布式文件分层管理

    公开(公告)号：US20120066278A1

    公开(公告)日：2012-03-15

    申请号：US12879717

    申请日：2010-09-10

    申请人： Janet E. Adkins ,  Joon Chang ,  David J. Craft ,  Gokul B. Kandiraju ,  Manoj N. Kumar

    发明人： Janet E. Adkins ,  Joon Chang ,  David J. Craft ,  Gokul B. Kandiraju ,  Manoj N. Kumar

    IPC分类号： G06F17/30

    CPC分类号： G06F17/30094 ,  G06F17/302

    摘要： Management of a file hierarchy for a clustered file system can be distributed across nodes of the cluster. A cluster file hierarchy is accessed to determine location of a file in response to a request to write to a file. A first node maintains the cluster file hierarchy. It is determined that management of a fileset object, which represents a fileset that includes the file, has been delegated to a second node based, at least in part, on said accessing the cluster file hierarchy. A node file hierarchy maintained by the second node is accessed responsive to determining the delegation. The cluster file hierarchy represents filesets of the clustered file system and the node hierarchy represents a subset of one or more of the filesets. Location of the file is determined based, at least in part, on said accessing the node file hierarchy.

    摘要翻译： 集群文件系统的文件层次结构的管理可以分布在集群的节点上。 访问集群文件层次结构以确定文件的位置以响应写入文件的请求。 第一个节点维护群集文件层次结构。 至少部分地基于对所述群集文件层次结构的访问，确定表示包括该文件的文件集的文件集对象的管理已委托给第二节点。 响应于确定委托而访问由第二节点维护的节点文件层次结构。 集群文件层次结构表示集群文件系统的文件集，节点层次结构表示一个或多个文件集的子集。 至少部分地基于访问节点文件层级来确定文件的位置。