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1. 发明授权

US08577855B2 Online file system consistency check 有权
标题翻译：在线文件系统一致性检查
公开(公告)号：US08577855B2
公开(公告)日：2013-11-05
申请号：US12907821
申请日：2010-10-19
申请人： Nagaraj Shyam , Craig Keatley Harmer , George Mathew
发明人： Nagaraj Shyam , Craig Keatley Harmer , George Mathew
IPC分类号： G06F17/30
CPC分类号： G06F17/30171
摘要： A lock is acquired on a data structure. Content in the data structure is read and verified while the lock is held. The lock is then released, and then the file system components that are referred to by the data structure are verified. In essence, a file system consistency check of the file system components is performed offline in the background while the data structure remains accessible.
摘要翻译：在数据结构上获取锁。数据结构中的内容在锁定时被读取和验证。然后释放锁，然后验证数据结构引用的文件系统组件。本质上，文件系统组件的文件系统一致性检查在后台执行，而数据结构仍然可访问。

2. 发明授权

US09141449B2 Managing remote procedure calls when a server is unavailable 有权
标题翻译：在服务器不可用时管理远程过程调用
公开(公告)号：US09141449B2
公开(公告)日：2015-09-22
申请号：US12610049
申请日：2009-10-30
申请人： Nagaraj Shyam , Craig Harmer , Ken Beck
发明人： Nagaraj Shyam , Craig Harmer , Ken Beck
IPC分类号： G06F9/54 , G06F9/50
CPC分类号： G06F9/547 , G06F9/5027 , G06F2209/503
摘要： A server node can monitor the status of servers in a server cluster. The node may receive an alert indicating that a server in the server cluster is unavailable. In response to the alert, the node can send instructions that cause pending remote procedure call requests to be canceled and then reissued to another server in the server cluster instead of to the first server.
摘要翻译：服务器节点可以监视服务器集群中服务器的状态。节点可能会收到指示服务器集群中的服务器不可用的警报。响应于该警报，该节点可以发送导致挂起的远程过程呼叫请求被取消的指令，然后重新发送到服务器集群中的另一个服务器而不是第一个服务器。

3. 发明申请

US20120095971A1 ONLINE FILE SYSTEM CONSISTENCY CHECK 有权
标题翻译：在线文件系统一致检查
公开(公告)号：US20120095971A1
公开(公告)日：2012-04-19
申请号：US12907821
申请日：2010-10-19
申请人： Nagaraj Shyam , Craig Keatley Harmer , George Mathew
发明人： Nagaraj Shyam , Craig Keatley Harmer , George Mathew
IPC分类号： G06F17/30
CPC分类号： G06F17/30171
摘要： A lock is acquired on a data structure. Content in the data structure is read and verified while the lock is held. The lock is then released, and then the file system components that are referred to by the data structure are verified. In essence, a file system consistency check of the file system components is performed offline in the background while the data structure remains accessible.
摘要翻译：在数据结构上获取锁。数据结构中的内容在锁定时被读取和验证。然后释放锁，然后验证数据结构引用的文件系统组件。本质上，文件系统组件的文件系统一致性检查在后台执行，而数据结构仍然可访问。

4. 发明申请

US20110107358A1 MANAGING REMOTE PROCEDURE CALLS WHEN A SERVER IS UNAVAILABLE 有权
标题翻译：管理远程程序在服务器不可用时调用
公开(公告)号：US20110107358A1
公开(公告)日：2011-05-05
申请号：US12610049
申请日：2009-10-30
申请人： Nagaraj Shyam , Craig Harmer , Ken Beck
发明人： Nagaraj Shyam , Craig Harmer , Ken Beck
IPC分类号： G06F9/44 , G06F13/00 , G06F15/173
CPC分类号： G06F9/547 , G06F9/5027 , G06F2209/503
摘要： A server node can monitor the status of servers in a server cluster. The node may receive an alert indicating that a server in the server cluster is unavailable. In response to the alert, the node can send instructions that cause pending remote procedure call requests to be canceled and then reissued to another server in the server cluster instead of to the first server.
摘要翻译：服务器节点可以监视服务器集群中服务器的状态。节点可能会收到指示服务器集群中的服务器不可用的警报。响应于该警报，该节点可以发送导致挂起的远程过程呼叫请求被取消的指令，然后重新发送到服务器集群中的另一个服务器而不是第一个服务器。

5. 发明授权

US07664991B1 System and method for distributed file system I/O recovery 有权
标题翻译：分布式文件系统I / O恢复的系统和方法
公开(公告)号：US07664991B1
公开(公告)日：2010-02-16
申请号：US10321120
申请日：2002-12-17
申请人： Laxmikant Gunda , Balaji Narasimhan , Sara Abraham , Shie-rei Huang , Nagaraj Shyam
发明人： Laxmikant Gunda , Balaji Narasimhan , Sara Abraham , Shie-rei Huang , Nagaraj Shyam
IPC分类号： G06F11/00
CPC分类号： G06F11/1443 , G06F11/1435
摘要： Embodiments of a system and method for distributed file system I/O recovery in storage networks. Embodiments may detect loss of access to a server in the storage network and recover application I/O requests in real-time once access to the server is restored. Embodiments may detect server and/or network failures and store failed and new I/O requests. Recovery from the failure (e.g. network reconnect, server node reboot, or failover, if this is a clustered environment) may be detected and, after recovery is detected, any stored failed and new I/O requests may be sent to the server. In one embodiment, to detect recovery from the failure, a failed I/O request may be repeatedly re-issued until the I/O request succeeds. Embodiments may be implemented in a variety of storage environments, including environments where clients issue direct I/O over a storage network to storage and control I/O over a network to a server.
摘要翻译：存储网络中分布式文件系统I / O恢复的系统和方法的实施例。实施例可以检测对存储网络中的服务器的访问的丢失，并且恢复对服务器的访问时实时地恢复应用I / O请求。实施例可以检测服务器和/或网络故障并存储失败的和新的I / O请求。可以检测到从故障恢复（例如，网络重新连接，服务器节点重新启动或故障转移（如果是集群环境）），并且在检测到恢复之后，可以将任何存储的故障和新的I / O请求发送到服务器。在一个实施例中，为了从故障中检测恢复，可能会重复发出失败的I / O请求，直到I / O请求成功。实施例可以在各种存储环境中实现，包括客户端通过存储网络发出直接I / O以将网络上的I / O存储和控制到服务器的环境。

6. 发明申请

US20120095970A1 IDENTIFYING UNREFERENCED FILE SYSTEM COMPONENTS 有权
标题翻译：识别不正确的文件系统组件
公开(公告)号：US20120095970A1
公开(公告)日：2012-04-19
申请号：US12907632
申请日：2010-10-19
申请人： Nagaraj Shyam , Craig Keatley Harmer , George Mathew
发明人： Nagaraj Shyam , Craig Keatley Harmer , George Mathew
IPC分类号： G06F17/30
CPC分类号： G06F17/30094
摘要： A list of data structures (e.g., inodes) can be accessed, and the data structures in the list can be examined. If a data structure is examined, a counter value associated with the data structure is changed to a generation number that is associated with the examination. Subsequently, the counter values can be used to identify unreferenced data structures. More specifically, the counter value for an unreferenced data structure will be different from the generation number for the most recently performed examination.
摘要翻译：可以访问数据结构（例如，inode）的列表，并且可以检查列表中的数据结构。如果检查数据结构，则将与数据结构相关联的计数器值更改为与检查相关联的代数。随后，可以使用计数器值来识别未引用的数据结构。更具体地，未参考数据结构的计数器值将与最近执行的检查的代数不同。

7. 发明授权

US08984097B1 Efficient file replication which preserves the underlying extent structure 有权
标题翻译：高效的文件复制保留了底层的扩展结构
公开(公告)号：US08984097B1
公开(公告)日：2015-03-17
申请号：US13478309
申请日：2012-05-23
申请人： Nagaraj Shyam , Bala Kumaresan , Brad Boyer , Ashish Puri
发明人： Nagaraj Shyam , Bala Kumaresan , Brad Boyer , Ashish Puri
IPC分类号： G06F15/16
CPC分类号： G06F17/30212 , G06F11/1451 , G06F17/30174
摘要： A system and method for replicating a set of files from a source computer system to a target computer system are described. The underlying extent structure of the files may be preserved. For example, if an original file on the source computer system has a particular number of extents then the copy of the file created on the target computer system may have the same number of extents, where each respective extent in the copy represents the same byte range of the file as its corresponding extent in the original file. The file systems employed on the source computer system and the target computer system may support different extent types. The extent types of the original files stored on the source computer system may be preserved in the copies of the files on the target computer system.
摘要翻译：描述用于将一组文件从源计算机系统复制到目标计算机系统的系统和方法。可能会保留文件的底层扩展结构。例如，如果源计算机系统上的原始文件具有特定数量的扩展数据块，则在目标计算机系统上创建的文件的副本可能具有相同的扩展数目，其中副本中的每个相应扩展区域表示相同的字节范围的文件作为其原始文件中的对应范围。在源计算机系统和目标计算机系统上采用的文件系统可以支持不同的扩展类型。存储在源计算机系统上的原始文件的扩展类型可以保留在目标计算机系统上的文件的副本中。

8. 发明授权

US08180811B2 Identifying unreferenced file system components 有权
标题翻译：识别未引用的文件系统组件
公开(公告)号：US08180811B2
公开(公告)日：2012-05-15
申请号：US12907632
申请日：2010-10-19
申请人： Nagaraj Shyam , Craig Keatley Harmer , George Matthew
发明人： Nagaraj Shyam , Craig Keatley Harmer , George Matthew
IPC分类号： G06F17/30
CPC分类号： G06F17/30094
摘要： A list of data structures (e.g., inodes) can be accessed, and the data structures in the list can be examined. If a data structure is examined, a counter value associated with the data structure is changed to a generation number that is associated with the examination. Subsequently, the counter values can be used to identify unreferenced data structures. More specifically, the counter value for an unreferenced data structure will be different from the generation number for the most recently performed examination.
摘要翻译：可以访问数据结构（例如，inode）的列表，并且可以检查列表中的数据结构。如果检查数据结构，则将与数据结构相关联的计数器值更改为与检查相关联的代数。随后，可以使用计数器值来识别未引用的数据结构。更具体地，未参考数据结构的计数器值将与最近执行的检查的代数不同。

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