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1. 发明申请

US20120159094A1 ASSIGNING READ REQUESTS BASED ON BUSYNESS OF DEVICES 有权
标题翻译：根据设备的繁琐准备阅读要求
公开(公告)号：US20120159094A1
公开(公告)日：2012-06-21
申请号：US12975242
申请日：2010-12-21
申请人： Willliam H. Bridge, JR. , Prasad Bagal , Lavina Jain , Rajiv Wickremesinghe , Darshan Nagarajappa , Richard L. Long
发明人： Willliam H. Bridge, JR. , Prasad Bagal , Lavina Jain , Rajiv Wickremesinghe , Darshan Nagarajappa , Richard L. Long
IPC分类号： G06F12/00 , G06F11/20
CPC分类号： G06F3/0617 , G06F3/0653 , G06F3/0683 , G06F11/2053 , G06F11/2094 , G06F11/3433
摘要： Techniques are provided for assigning read requests to storage devices in a manner that reduces the likelihood that any storage device will become overloaded or underutilized. Specifically, a read-request handler assigns read requests that are directed to each particular item among the storage devices that have copies of the item based on how busy each of those storage devices is. Consequently, even though certain storage devices may have copies of the same item, there may be times during which one storage device is assigned a disproportionate number of the reads of the item because the other storage device is busy with read requests for other items, and there may be other times during which other storage device is assigned a disproportionate number of the reads of the item because the one storage device is busy with read request for other items. Various techniques for estimating the busyness of storage devices are provided, including fraction-based estimates, interval-based estimates, and the response-time-based estimates. Techniques for smoothing those estimates, and for handicapping devices, are also provided.
摘要翻译：提供了以减少任何存储设备将变得过载或未充分利用的可能性的方式将读请求分配给存储设备的技术。具体地说，读取请求处理程序根据这些存储设备的忙碌来分配针对具有项目副本的存储设备中的每个特定项目的读取请求。因此，尽管某些存储设备可能具有相同项目的副本，但是由于另一个存储设备忙于对其他项目的读取请求，所以可能存在一个存储设备被分配了不成比例的该项目的读取的次数，以及可能存在其他存储设备被分配了不成比例数量的项目的其他时间，因为一个存储设备忙于对其他项目的读取请求。提供了用于估计存储设备的繁忙性的各种技术，包括基于分数的估计，基于间隔的估计和基于响应时间的估计。还提供了用于平滑这些估计的技术和用于障碍装置的技术。

2. 发明授权

US09141508B2 Assigning read requests based on busyness of devices 有权
标题翻译：根据设备的忙碌分配读取请求
公开(公告)号：US09141508B2
公开(公告)日：2015-09-22
申请号：US12975242
申请日：2010-12-21
申请人： Willliam H. Bridge, Jr. , Prasad Bagal , Lavina Jain , Rajiv Wickremesinghe , Darshan Nagarajappa , Richard L. Long
发明人： Willliam H. Bridge, Jr. , Prasad Bagal , Lavina Jain , Rajiv Wickremesinghe , Darshan Nagarajappa , Richard L. Long
IPC分类号： G06F12/00 , G06F11/20 , G06F11/34
CPC分类号： G06F3/0617 , G06F3/0653 , G06F3/0683 , G06F11/2053 , G06F11/2094 , G06F11/3433
摘要： Techniques are provided for assigning read requests to storage devices in a manner that reduces the likelihood that any storage device will become overloaded or underutilized. Specifically, a read-request handler assigns read requests that are directed to each particular item among the storage devices that have copies of the item based on how busy each of those storage devices is. Consequently, even though certain storage devices may have copies of the same item, there may be times during which one storage device is assigned a disproportionate number of the reads of the item because the other storage device is busy with read requests for other items, and there may be other times during which other storage device is assigned a disproportionate number of the reads of the item because the one storage device is busy with read request for other items. Various techniques for estimating the busyness of storage devices are provided, including fraction-based estimates, interval-based estimates, and the response-time-based estimates. Techniques for smoothing those estimates, and for handicapping devices, are also provided.
摘要翻译：提供了以减少任何存储设备将变得过载或未充分利用的可能性的方式将读请求分配给存储设备的技术。具体地说，读取请求处理程序根据这些存储设备的忙碌来分配针对具有项目副本的存储设备中的每个特定项目的读取请求。因此，尽管某些存储设备可能具有相同项目的副本，但是由于另一个存储设备忙于对其他项目的读取请求，所以可能存在一个存储设备被分配了不成比例的该项目的读取的次数，以及可能存在其他存储设备被分配了不成比例数量的项目的其他时间，因为一个存储设备忙于对其他项目的读取请求。提供了用于估计存储设备的繁忙性的各种技术，包括基于分数的估计，基于间隔的估计和基于响应时间的估计。还提供了用于平滑这些估计的技术和用于障碍装置的技术。

3. 发明申请

US20110106774A1 Bootstrapping Server Using Configuration File Stored In Server-Managed Storage 有权
标题翻译：引导服务器使用存储在服务器管理存储中的配置文件
公开(公告)号：US20110106774A1
公开(公告)日：2011-05-05
申请号：US12610189
申请日：2009-10-30
申请人： Rajiv Wickremesinghe , Harish Nandyala , Prasad Bagal , David Friedman
发明人： Rajiv Wickremesinghe , Harish Nandyala , Prasad Bagal , David Friedman
IPC分类号： G06F15/177 , G06F12/00
CPC分类号： G06F9/4416 , G06F9/44505 , H04L41/0856 , H04L41/0859 , H04L41/0873 , H04L67/34 , Y10S707/99954
摘要： A method and apparatus for booting a clustered management system is provided where the configuration information required to boot the system is stored within the system itself. The techniques cope with several issues including finding the configuration data on the physical disk before the logical disk system is established, coping with replicated copies of configuration data, network partitions and disk drive failures that may prevent a booting node to have perfect knowledge of the state of the entire system, and active nodes modifying or moving configuration data while the booting node is searching for a consistent, correct copy of configuration data.
摘要翻译：提供了用于引导集群管理系统的方法和装置，其中引导系统所需的配置信息被存储在系统本身内。该技术可以应对几个问题，包括在建立逻辑磁盘系统之前查找物理磁盘上的配置数据，应对配置数据的复制副本，网络分区和磁盘驱动器故障，这可能会阻止引导节点完全了解状态的整个系统，以及主动节点修改或移动配置数据，同时引导节点正在搜索配置数据的一致，正确的副本。

4. 发明授权

US09009121B2 Bootstrapping server using configuration file stored in server-managed storage 有权
标题翻译：引导服务器使用存储在服务器管理的存储中的配置文件
公开(公告)号：US09009121B2
公开(公告)日：2015-04-14
申请号：US12610189
申请日：2009-10-30
申请人： Rajiv Wickremesinghe , Harish Nandyala , Prasad Bagal , David Friedman
发明人： Rajiv Wickremesinghe , Harish Nandyala , Prasad Bagal , David Friedman
IPC分类号： G06F7/00 , G06F17/00 , H04L12/24 , H04L29/08
CPC分类号： G06F9/4416 , G06F9/44505 , H04L41/0856 , H04L41/0859 , H04L41/0873 , H04L67/34 , Y10S707/99954
摘要： A method and apparatus for booting a clustered management system is provided where the configuration information required to boot the system is stored within the system itself. The techniques cope with several issues including finding the configuration data on the physical disk before the logical disk system is established, coping with replicated copies of configuration data, network partitions and disk drive failures that may prevent a booting node to have perfect knowledge of the state of the entire system, and active nodes modifying or moving configuration data while the booting node is searching for a consistent, correct copy of configuration data.
摘要翻译：提供了用于引导集群管理系统的方法和装置，其中引导系统所需的配置信息被存储在系统本身内。该技术可以应对几个问题，包括在建立逻辑磁盘系统之前查找物理磁盘上的配置数据，应对配置数据的复制副本，网络分区和磁盘驱动器故障，这可能会阻止引导节点完全了解状态的整个系统，以及主动节点修改或移动配置数据，同时引导节点正在搜索配置数据的一致，正确的副本。

5. 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。

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