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1. 发明授权

US08732521B2 Detection of logical corruption in persistent storage and automatic recovery therefrom 有权
标题翻译：在持久存储中检测逻辑损坏并从中自动恢复
公开(公告)号：US08732521B2
公开(公告)日：2014-05-20
申请号：US13223221
申请日：2011-08-31
申请人： Sameer Joshi , Prasad Bagal , Rajiv Wickremesinghe , Richard Long , Harish Nandyala , Shie-rei Huang
发明人： Sameer Joshi , Prasad Bagal , Rajiv Wickremesinghe , Richard Long , Harish Nandyala , Shie-rei Huang
IPC分类号： G06F11/00
CPC分类号： G11B20/1816 , G06F11/008 , G06F11/2058 , G06F11/2064 , G06F11/2082 , G06F11/3466 , G06F2201/81 , G11B20/1883
摘要： A method, system, and computer program product for restoring blocks of data stored at a corrupted data site using two or more mirror sites. The method commences by receiving a trigger event from a component within an application server environment where the trigger event indicates detection of a corrupted data site. The trigger is classified into at least one of a plurality of trigger event types, which trigger event type signals further processing for retrieving from at least two mirror sites, a first stored data block and a second stored data block corresponding to the same logical block identifier from the first mirror site. The retrieved blocks are compared to determine a match value, and when the match value is greater than a confidence threshold, then writing good data to the corrupted data site before performing consistency checks on blocks in physical or logical proximity to the corrupted data site.
摘要翻译：一种方法，系统和计算机程序产品，用于使用两个或更多个镜像站点恢复存储在损坏的数据站点的数据块。该方法通过从触发事件指示检测到损坏的数据站点的应用程序服务器环境中的组件接收触发事件而开始。触发器被分类为多个触发事件类型中的至少一个，其触发事件类型信号进一步处理以从至少两个镜像站点检索第一存储数据块和对应于相同逻辑块标识符的第二存储数据块从第一个镜像站点。将检索到的块进行比较以确定匹配值，并且当匹配值大于置信度阈值时，则在对损坏的数据站点的物理或逻辑接近的块执行一致性检查之前，将好的数据写入损坏的数据站点。

2. 发明申请

US20130055018A1 DETECTION OF LOGICAL CORRUPTION IN PERSISTENT STORAGE AND AUTOMATIC RECOVERY THEREFROM 有权
标题翻译：持久存储中的逻辑损坏检测及其自动恢复
公开(公告)号：US20130055018A1
公开(公告)日：2013-02-28
申请号：US13223221
申请日：2011-08-31
申请人： Sameer JOSHI , Prasad BAGAL , Rajiv WICKREMESINGHE , Richard LONG , Harish NANDYALA , Shie-rei HUANG
发明人： Sameer JOSHI , Prasad BAGAL , Rajiv WICKREMESINGHE , Richard LONG , Harish NANDYALA , Shie-rei HUANG
IPC分类号： G06F11/14
CPC分类号： G11B20/1816 , G06F11/008 , G06F11/2058 , G06F11/2064 , G06F11/2082 , G06F11/3466 , G06F2201/81 , G11B20/1883
摘要： A method, system, and computer program product for restoring blocks of data stored at a corrupted data site using two or more mirror sites. The method commences by receiving a trigger event from a component within an application server environment where the trigger event indicates detection of a corrupted data site. The trigger is classified into at least one of a plurality of trigger event types, which trigger event type signals further processing for retrieving from at least two mirror sites, a first stored data block and a second stored data block corresponding to the same logical block identifier from the first mirror site. The retrieved blocks are compared to determine a match value, and when the match value is greater than a confidence threshold, then writing good data to the corrupted data site before performing consistency checks on blocks in physical or logical proximity to the corrupted data site.
摘要翻译：一种方法，系统和计算机程序产品，用于使用两个或更多个镜像站点恢复存储在损坏的数据站点的数据块。该方法通过从触发事件指示检测到损坏的数据站点的应用程序服务器环境中的组件接收触发事件而开始。触发器被分类为多个触发事件类型中的至少一个，其触发事件类型信号进一步处理以从至少两个镜像站点检索第一存储数据块和对应于相同逻辑块标识符的第二存储数据块从第一个镜像站点。将检索到的块进行比较以确定匹配值，并且当匹配值大于置信度阈值时，则在对损坏的数据站点的物理或逻辑接近的块执行一致性检查之前，将好的数据写入损坏的数据站点。

3. 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。

4. 发明授权

US07627699B1 System and method for managing I/O access policies in a storage environment employing asymmetric distributed block virtualization 有权
标题翻译：在采用非对称分布式块虚拟化的存储环境中管理I / O访问策略的系统和方法
公开(公告)号：US07627699B1
公开(公告)日：2009-12-01
申请号：US11865034
申请日：2007-09-30
申请人： Kalaivani Arumugham , Santosh Rao , Gopal Sharma , Poonam Dhavale , Randy Shingai , Ronald S. Karr , Oleg Kiselev , Shie-Rei Huang
发明人： Kalaivani Arumugham , Santosh Rao , Gopal Sharma , Poonam Dhavale , Randy Shingai , Ronald S. Karr , Oleg Kiselev , Shie-Rei Huang
IPC分类号： G06F13/00 , G06F15/16 , G06F15/167
CPC分类号： G06F3/0637 , G06F3/0605 , G06F3/067
摘要： A system employing asymmetric distributed block virtualization includes a volume server, a plurality of volume clients, and one or more physical block devices. The volume server aggregates storage in the physical block devices into a logical volume and makes the logical volume accessible to the volume clients for input/output (I/O) operations. In order to manage different I/O access requirements (such as read-only access versus read-write access) of the volume clients, the volume server maintains a different I/O access policy for each volume client to control the kinds of input/output operations that the volume client is allowed to perform on the logical volume.
摘要翻译：采用非对称分布式块虚拟化的系统包括卷服务器，多个卷客户机以及一个或多个物理块设备。卷服务器将物理块设备中的存储器聚合到逻辑卷中，并使卷客户端可以访问逻辑卷进行输入/输出（I / O）操作。为了管理卷客户端的不同I / O访问要求（例如只读访问权限与读写访问权限），卷服务器为每个卷客户端维护不同的I / O访问策略，以控制输入/ 允许卷客户端在逻辑卷上执行的输出操作。

5. 发明授权

US07328287B1 System and method for managing I/O access policies in a storage environment employing asymmetric distributed block virtualization 有权
标题翻译：在采用非对称分布式块虚拟化的存储环境中管理I / O访问策略的系统和方法
公开(公告)号：US07328287B1
公开(公告)日：2008-02-05
申请号：US10899201
申请日：2004-07-26
申请人： Kalaivani Arumugham , Santosh Rao , Gopal Sharma , Poonam Dhavale , Randy Shingai , Ronald S. Karr , Oleg Kiselev , Shie-Rei Huang
发明人： Kalaivani Arumugham , Santosh Rao , Gopal Sharma , Poonam Dhavale , Randy Shingai , Ronald S. Karr , Oleg Kiselev , Shie-Rei Huang
IPC分类号： G06F13/00 , G06F15/16 , G06F15/167
CPC分类号： G06F3/0637 , G06F3/0605 , G06F3/067
摘要： A system employing asymmetric distributed block virtualization includes a volume server, a plurality of volume clients, and one or more physical block devices. The volume server aggregates storage in the physical block devices into a logical volume and makes the logical volume accessible to the volume clients for input/output (I/O) operations. In order to manage different I/O access requirements (such as read-only access versus read-write access) of the volume clients, the volume server maintains a different I/O access policy for each volume client to control the kinds of input/output operations that the volume client is allowed to perform on the logical volume.
摘要翻译：采用非对称分布式块虚拟化的系统包括卷服务器，多个卷客户机以及一个或多个物理块设备。卷服务器将物理块设备中的存储器聚合到逻辑卷中，并使卷客户端可以访问逻辑卷进行输入/输出（I / O）操作。为了管理卷客户端的不同I / O访问要求（例如只读访问权限与读写访问权限），卷服务器为每个卷客户端维护不同的I / O访问策略，以控制输入/ 允许卷客户端在逻辑卷上执行的输出操作。

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