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1. 发明授权

US08965862B2 Directory oplock 有权
标题翻译：目录oplock
公开(公告)号：US08965862B2
公开(公告)日：2015-02-24
申请号：US12884624
申请日：2010-09-17
申请人： Christian Gregory Allred , Sarosh Cyrus Havewala , Neal Robert Christiansen, Jr. , David Matthew Kruse , Mathew George , Matthew Stuart Garson , Daniel Edward Lovinger
发明人： Christian Gregory Allred , Sarosh Cyrus Havewala , Neal Robert Christiansen, Jr. , David Matthew Kruse , Mathew George , Matthew Stuart Garson , Daniel Edward Lovinger
IPC分类号： G06F17/30
CPC分类号： G06F17/30171
摘要： Current file systems may implement opportunistic locks on files that allow clients to locally cache file data, while promoting data consistency when multiple clients read/write the same file. Unfortunately, when a client locally caches directory content of a directory, the file system may lack a mechanism for notifying the client of changes to the directory that would render the cached directory content “stale”. Accordingly, one or more systems and/or techniques for managing a directory oplock are disclosed herein. A directory oplock may be generated based upon an oplock request comprising a first target key and a first parent key. Subsequent access requests for access to the directory or objects therein may be compared with the directory oplock to determine whether to break the directory oplock, and notify the client (e.g., directory oplock is broken if the client submitting the access request is different than the client owning the directory oplock).
摘要翻译：当前的文件系统可能会在允许客户端本地缓存文件数据的文件上实现机会锁定，同时在多个客户端读/写同一文件时提高数据一致性。不幸的是，当客户端本地缓存目录的目录内容时，文件系统可能缺少通知客户机将使缓存的目录内容“陈旧”的目录更改的机制。因此，本文公开了用于管理目录oplock的一个或多个系统和/或技术。可以基于包括第一目标密钥和第一父密钥的oplock请求来生成目录oplock。可以将访问其目录或对象的后续访问请求与目录oplock进行比较，以确定是否中断目录oplock，并通知客户机（例如，如果客户端提交访问请求不同于客户端，则目录oplock被破坏拥有目录oplock）。

2. 发明申请

US20120072400A1 DIRECTORY OPLOCK 有权
公开(公告)号：US20120072400A1
公开(公告)日：2012-03-22
申请号：US12884624
申请日：2010-09-17
申请人： Christian Gregory Allred , Sarosh Cyrus Havewala , Neal Robert Christiansen , David Matthew Kruse , Mathew George , Matthew Stuart Garson , Daniel Edward Lovinger
发明人： Christian Gregory Allred , Sarosh Cyrus Havewala , Neal Robert Christiansen , David Matthew Kruse , Mathew George , Matthew Stuart Garson , Daniel Edward Lovinger
IPC分类号： G06F17/30
CPC分类号： G06F17/30171
摘要： Current file systems may implement opportunistic locks on files that allow clients to locally cache file data, while promoting data consistency when multiple clients read/write the same file. Unfortunately, when a client locally caches directory content of a directory, the file system may lack a mechanism for notifying the client of changes to the directory that would render the cached directory content “stale”. Accordingly, one or more systems and/or techniques for managing a directory oplock are disclosed herein. A directory oplock may be generated based upon an oplock request comprising a first target key and a first parent key. Subsequent access requests for access to the directory or objects therein may be compared with the directory oplock to determine whether to break the directory oplock, and notify the client (e.g., directory oplock is broken if the client submitting the access request is different than the client owning the directory oplock).
摘要翻译：当前的文件系统可能会在允许客户端本地缓存文件数据的文件上实现机会锁定，同时在多个客户端读/写同一文件时提高数据一致性。不幸的是，当客户端本地缓存目录的目录内容时，文件系统可能缺少通知客户机将使缓存的目录内容“陈旧”的目录更改的机制。因此，本文公开了用于管理目录oplock的一个或多个系统和/或技术。可以基于包括第一目标密钥和第一父密钥的oplock请求来生成目录oplock。可以将访问其目录或对象的后续访问请求与目录oplock进行比较，以确定是否中断目录oplock，并通知客户机（例如，如果客户端提交访问请求不同于客户端，则目录oplock被破坏拥有目录oplock）。

3. 发明授权

US08856582B2 Transparent failover 有权
标题翻译：透明的故障转移
公开(公告)号：US08856582B2
公开(公告)日：2014-10-07
申请号：US13174271
申请日：2011-06-30
申请人： Mathew George , David M. Kruse , James T. Pinkerton , Roopesh C. Battepati , Tom Jolly , Paul R. Swan , Mingdong Shang , Daniel Edward Lovinger
发明人： Mathew George , David M. Kruse , James T. Pinkerton , Roopesh C. Battepati , Tom Jolly , Paul R. Swan , Mingdong Shang , Daniel Edward Lovinger
IPC分类号： G06F11/00 , G06F11/20 , H04L29/08 , G06F11/14
CPC分类号： H04L67/06 , G06F11/1443 , G06F11/2033 , G06F11/2038 , H04L67/1002 , H04L67/141 , H04L67/142 , H04L67/146
摘要： Described are embodiments directed at persistent handles that are used to retain state across network failures and server failovers. Persistent handles are requested by a client after a session has been established with a file server. The request for the persistent handle includes a handle identifier generated by the client. The server uses the handle identifier to associate with state information. When there is a network failure or a server failover, and a reconnection to the client, the handle identifier is used to identify replayed requests that if replayed would create an inconsistent state on the server. The replayed requests are then appropriately handled.
摘要翻译：描述的是针对用于在网络故障和服务器故障转移之间保持状态的持久句柄的实施例。在与文件服务器建立会话之后，客户端请求持久句柄。对持久句柄的请求包括由客户端生成的句柄标识符。服务器使用句柄标识符与状态信息相关联。当出现网络故障或服务器故障切换以及与客户端的重新连接时，使用句柄标识符来识别重播的请求，如果重播将在服务器上创建不一致的状态。重播的请求被适当地处理。

4. 发明申请

US20130007518A1 TRANSPARENT FAILOVER 有权
标题翻译：透明失败
公开(公告)号：US20130007518A1
公开(公告)日：2013-01-03
申请号：US13174271
申请日：2011-06-30
申请人： Mathew George , David M. Kruse , James T. Pinkerton , Roopesh C. Battepati , Tom Jolly , Paul R. Swan , Mingdong Shang , Daniel Edward Lovinger
发明人： Mathew George , David M. Kruse , James T. Pinkerton , Roopesh C. Battepati , Tom Jolly , Paul R. Swan , Mingdong Shang , Daniel Edward Lovinger
IPC分类号： G06F17/30 , G06F11/14 , G06F15/16
CPC分类号： H04L67/06 , G06F11/1443 , G06F11/2033 , G06F11/2038 , H04L67/1002 , H04L67/141 , H04L67/142 , H04L67/146
摘要： Described are embodiments directed at persistent handles that are used to retain state across network failures and server failovers. Persistent handles are requested by a client after a session has been established with a file server. The request for the persistent handle includes a handle identifier generated by the client. The server uses the handle identifier to associate with state information. When there is a network failure or a server failover, and a reconnection to the client, the handle identifier is used to identify replayed requests that if replayed would create an inconsistent state on the server. The replayed requests are then appropriately handled.
摘要翻译：描述的是针对用于在网络故障和服务器故障转移之间保持状态的持久句柄的实施例。在与文件服务器建立会话之后，客户端请求持久句柄。对持久句柄的请求包括由客户端生成的句柄标识符。服务器使用句柄标识符与状态信息相关联。当出现网络故障或服务器故障切换以及与客户端的重新连接时，使用句柄标识符来识别重播的请求，如果重播将在服务器上创建不一致的状态。重播的请求被适当地处理。

5. 发明申请

US20090006468A1 EFFICIENT UPDATES FOR DISTRIBUTED FILE SYSTEMS 有权
标题翻译：分布式文件系统的有效更新
公开(公告)号：US20090006468A1
公开(公告)日：2009-01-01
申请号：US12013284
申请日：2008-01-11
申请人： Ramesh Shankar , Daniel Edward Lovinger , Chien-Lung Yu
发明人： Ramesh Shankar , Daniel Edward Lovinger , Chien-Lung Yu
IPC分类号： G06F7/00
CPC分类号： G06F17/30091 , G06F17/30194
摘要： A directory services implementation is provided to associate distributed file system (DFS) links with individual directory objects, and metadata to attributes thereof, to allow leveraging directory services features for DFS for a given namespace. For example, updating directory objects with modified metadata related to DFS links requires only that the directory object related to the link be updated rather than an entire directory object related to the corresponding namespace. Moreover, directory services functionalities such as querying can be utilized with DFS to provide efficient location of updated records. In this regard, efficient replication of DFS throughout a network is facilitated.
摘要翻译：提供了一个目录服务实现，用于将分布式文件系统（DFS）链接与各个目录对象相关联，并将元数据与其属性相关联，以便为给定的命名空间利用DFS的目录服务功能。例如，使用与DFS链接相关的修改的元数据更新目录对象只需要更新与链接相关的目录对象，而不是更新与相应命名空间相关的整个目录对象。此外，诸如查询的目录服务功能可以与DFS一起使用，以提供更新记录的有效位置。在这方面，DFS在整个网络中的高效复制便于实现。

6. 发明授权

US07584220B2 System and method for determining target failback and target priority for a distributed file system 有权
标题翻译：用于确定分布式文件系统的目标故障恢复和目标优先级的系统和方法
公开(公告)号：US07584220B2
公开(公告)日：2009-09-01
申请号：US11053386
申请日：2005-02-07
申请人： Patrick Bozeman , Scott Eric Colville , Mukul Gupta , Daniel Edward Lovinger , Ravisankar V. Pudipeddi , Ramesh Shankar , Supriya Wickrematillake
发明人： Patrick Bozeman , Scott Eric Colville , Mukul Gupta , Daniel Edward Lovinger , Ravisankar V. Pudipeddi , Ramesh Shankar , Supriya Wickrematillake
IPC分类号： G06F17/30
CPC分类号： G06F17/30091 , G06F17/30194 , Y10S707/99953
摘要： A system and method for organizing and sorting targets received in a referral response and for realizing a target fail-back and a target priority policy in a distributed file system is provided. In one embodiment, a sorting method includes receiving a referral response in the form of a list of targets that are sorted into bounded sets. Having a sorted referral response in bounded sets provides a basis for implementing a target fail-back and a target priority policy. The computer system may select a target from a sorted list of targets sorted according to site-cost and/or target priority. Then, the computer system may determine if the set target is associated with a more preferred target when compared to all available targets in the sorted list and if not, switch back to a more preferred target.
摘要翻译：提供了一种用于组织和分类在引荐响应中接收的目标并且用于实现分布式文件系统中的目标故障恢复和目标优先级策略的系统和方法。在一个实施例中，排序方法包括以分类为有界集合的目标列表的形式接收推荐响应。在有界集合中进行排序的引用响应为实现目标故障恢复和目标优先级策略提供了基础。计算机系统可以从根据站点成本和/或目标优先级排序的排序的目标列表中选择目标。然后，当与排序列表中的所有可用目标相比较时，计算机系统可以确定所设置的目标是否与更优选的目标相关联，如果不是，则切换回更优选的目标。

7. 发明授权

US08452821B2 Efficient updates for distributed file systems 有权
标题翻译：分布式文件系统的高效更新
公开(公告)号：US08452821B2
公开(公告)日：2013-05-28
申请号：US12013284
申请日：2008-01-11
申请人： Ramesh Shankar , Daniel Edward Lovinger , Chien-Lung Yu
发明人： Ramesh Shankar , Daniel Edward Lovinger , Chien-Lung Yu
IPC分类号： G06F17/30
CPC分类号： G06F17/30091 , G06F17/30194
摘要： A directory services implementation is provided to associate distributed file system (DFS) links with individual directory objects, and metadata to attributes thereof, to allow leveraging directory services features for DFS for a given namespace. For example, updating directory objects with modified metadata related to DFS links requires only that the directory object related to the link be updated rather than an entire directory object related to the corresponding namespace. Moreover, directory services functionalities such as querying can be utilized with DFS to provide efficient location of updated records. In this regard, efficient replication of DFS throughout a network is facilitated.
摘要翻译：提供了一个目录服务实现，用于将分布式文件系统（DFS）链接与各个目录对象相关联，并将元数据与其属性相关联，以便为给定的命名空间利用DFS的目录服务功能。例如，使用与DFS链接相关的修改的元数据更新目录对象只需要更新与链接相关的目录对象，而不是更新与相应命名空间相关的整个目录对象。此外，诸如查询的目录服务功能可以与DFS一起使用，以提供更新记录的有效位置。在这方面，DFS在整个网络中的高效复制便于实现。

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