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1. 发明授权

US08140806B2 Eliminating fragmentation with buddy-tree allocation 有权
标题翻译：消除分组与伙伴树分配
公开(公告)号：US08140806B2
公开(公告)日：2012-03-20
申请号：US11694445
申请日：2007-03-30
申请人： Radek Vingralek , William H. Bridge, Jr. , Prasad Bagal
发明人： Radek Vingralek , William H. Bridge, Jr. , Prasad Bagal
IPC分类号： G06F12/00
CPC分类号： G06F12/023 , G06F3/061 , G06F3/064 , G06F3/0674
摘要： This disclosure describes solutions for reducing the amount of fragmentation on a computer memory device, such as a hard disk, random access memory device, and/or the like. In an aspect, this disclosure describes systems, methods and software for allocating storage space for variable-sized data chunks in a fashion that reduces or eliminates the need for periodic de-fragmentation of the memory device. In another aspect, this disclosure describes solutions that provide for the dynamic re-allocation of existing data blocks on the memory device to provide contiguous available space that can be allocated for new data blocks.
摘要翻译：本公开描述了用于减少计算机存储设备（例如硬盘，随机存取存储器设备等）上的碎片量的解决方案。在一方面，本公开描述了用于以减少或消除对存储器件的周期性解片的需要的方式为可变大小的数据块分配存储空间的系统，方法和软件。在另一方面，本公开描述了提供对存储器设备上的现有数据块的动态重新分配以提供可被分配给新数据块的连续可用空间的解决方案。

2. 发明申请

US20080244210A1 ELIMINATING FRAGMENTATION WITH BUDDY-TREE ALLOCATION 有权
标题翻译：用BUDDY-TREE分配来消除分类
公开(公告)号：US20080244210A1
公开(公告)日：2008-10-02
申请号：US11694445
申请日：2007-03-30
申请人： Radek Vingralek , William H. Bridge , Prasad Bagal
发明人： Radek Vingralek , William H. Bridge , Prasad Bagal
IPC分类号： G06F12/00
CPC分类号： G06F12/023 , G06F3/061 , G06F3/064 , G06F3/0674
摘要： This disclosure describes solutions for reducing the amount of fragmentation on a computer memory device, such as a hard disk, random access memory device, and/or the like. In an aspect, this disclosure describes systems, methods and software for allocating storage space for variable-sized data chunks in a fashion that reduces or eliminates the need for periodic de-fragmentation of the memory device. In another aspect, this disclosure describes solutions that provide for the dynamic re-allocation of existing data blocks on the memory device to provide contiguous available space that can be allocated for new data blocks.
摘要翻译：本公开描述了用于减少计算机存储设备（例如硬盘，随机存取存储器设备等）上的碎片量的解决方案。在一方面，本公开描述了用于以减少或消除对存储器件的周期性解片的需要的方式为可变大小的数据块分配存储空间的系统，方法和软件。在另一方面，本公开描述了提供对存储器设备上的现有数据块的动态重新分配以提供可被分配给新数据块的连续可用空间的解决方案。

3. 发明申请

US20080281954A1 Capability requirements for group membership 有权
标题翻译：团体会员资格能力要求
公开(公告)号：US20080281954A1
公开(公告)日：2008-11-13
申请号：US11801805
申请日：2007-05-10
申请人： Prasad Bagal
发明人： Prasad Bagal
IPC分类号： G06F15/173
CPC分类号： H04L67/303
摘要： A method and apparatus for adding a node to a group of nodes is provided. Group capability data is stored in volatile memory of a group manager for a group. The group capability data identifies capability requirements for members of the group. The group manager provides notification services for members of the group. A request to add a particular node to a group is received. In response to receiving the request, a determination is made as to whether the particular node satisfies the capability requirements identified by the group capability data. Upon determining that the particular node does satisfy the capability requirements identified by the group capability data, the particular node is added to the group. The capability requirements for members of a group may initially be based on the capabilities of the first node that is added to a group.
摘要翻译：提供了一种用于将节点添加到一组节点的方法和装置。组能力数据存储在组的组管理器的易失性存储器中。组能力数据识别组成员的能力要求。集团经理为集团成员提供通知服务。接收到将特定节点添加到组的请求。响应于接收到请求，确定特定节点是否满足由组能力数据识别的能力要求。在确定特定节点确实满足由组能力数据识别的能力要求时，特定节点被添加到组中。组的成员的能力要求可以最初基于添加到组的第一节点的能力。

4. 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。

5. 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。

6. 发明授权

US07805503B2 Capability requirements for group membership 有权
标题翻译：团体会员资格能力要求
公开(公告)号：US07805503B2
公开(公告)日：2010-09-28
申请号：US11801805
申请日：2007-05-10
申请人： Prasad Bagal
发明人： Prasad Bagal
IPC分类号： G06F15/177 , G06F15/173
CPC分类号： H04L67/303
摘要： A method and apparatus for adding a node to a group of nodes is provided. Group capability data is stored in volatile memory of a group manager for a group. The group capability data identifies capability requirements for members of the group. The group manager provides notification services for members of the group. A request to add a particular node to a group is received. In response to receiving the request, a determination is made as to whether the particular node satisfies the capability requirements identified by the group capability data. Upon determining that the particular node does satisfy the capability requirements identified by the group capability data, the particular node is added to the group. The capability requirements for members of a group may initially be based on the capabilities of the first node that is added to a group.
摘要翻译：提供了一种用于将节点添加到一组节点的方法和装置。组能力数据存储在组的组管理器的易失性存储器中。组能力数据识别组成员的能力要求。集团经理为集团成员提供通知服务。接收到将特定节点添加到组的请求。响应于接收到请求，确定特定节点是否满足由组能力数据识别的能力要求。在确定特定节点确实满足由组能力数据识别的能力要求时，特定节点被添加到组中。组的成员的能力要求可以最初基于添加到组的第一节点的能力。

7. 发明授权

US08392915B2 Efficient volume manager hot swapping 有权
标题翻译：高效的卷管理器热插拔
公开(公告)号：US08392915B2
公开(公告)日：2013-03-05
申请号：US12274203
申请日：2008-11-19
申请人： David Friedman , Prasad Bagal
发明人： David Friedman , Prasad Bagal
IPC分类号： G06F9/455
CPC分类号： G06F12/16 , G06F3/0631 , G06F3/0665 , G06F9/4856
摘要： Methods of hot-swapping a logical volume manager (LVM) and updating an associated extent map are presented. Methods for migrating a virtual machine running an application using an LVM from one physical machine to another physical machine are also presented. The LVM can be used by a database application or other applications in a single-node or multi-node environment. The LVM is shut down, version numbers for each segment of its associated extent map are saved, and a new LVM is started. The new LVM's extent map is compared with the old extent map, and segments in the LVM which have changed are selectively updated.
摘要翻译：介绍了热交换逻辑卷管理器（LVM）和更新相关扩展图的方法。还介绍了将使用LVM运行应用程序的虚拟机从一台物理机器迁移到另一台物理机器的方法。 LVM可以由数据库应用程序或单节点或多节点环境中的其他应用程序使用。关闭LVM，将保存其关联扩展图的每个段的版本号，并启动一个新的LVM。将新的LVM的范围图与旧的扩展图进行比较，并且LVM中已更改的段被选择性更新。

8. 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。

9. 发明申请

US20100125842A1 EFFICIENT VOLUME MANAGER HOT SWAPPING 有权
标题翻译：高效管理员热切换
公开(公告)号：US20100125842A1
公开(公告)日：2010-05-20
申请号：US12274203
申请日：2008-11-19
申请人： David Friedman , Prasad Bagal
发明人： David Friedman , Prasad Bagal
IPC分类号： G06F9/455 , G06F12/00 , G06F12/02 , G06F9/46
CPC分类号： G06F12/16 , G06F3/0631 , G06F3/0665 , G06F9/4856
摘要： Methods of hot-swapping a logical volume manager (LVM) and updating an associated extent map are presented. Methods for migrating a virtual machine running an application using an LVM from one physical machine to another physical machine are also presented. The LVM can be used by a database application or other applications in a single-node or multi-node environment. The LVM is shut down, version numbers for each segment of its associated extent map are saved, and a new LVM is started. The new LVM's extent map is compared with the old extent map, and segments in the LVM which have changed are selectively updated.
摘要翻译：介绍了热交换逻辑卷管理器（LVM）和更新相关扩展图的方法。还介绍了将使用LVM运行应用程序的虚拟机从一台物理机器迁移到另一台物理机器的方法。 LVM可以由数据库应用程序或单节点或多节点环境中的其他应用程序使用。关闭LVM，将保存其关联扩展图的每个段的版本号，并启动一个新的LVM。将新的LVM的范围图与旧的扩展图进行比较，并且LVM中已更改的段被选择性更新。

10. 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。

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