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1. 发明授权

US08150805B1 Consistency interval marker assisted in-band commands in distributed systems 有权
标题翻译：分布式系统中一致性间隔标记辅助带内命令
公开(公告)号：US08150805B1
公开(公告)日：2012-04-03
申请号：US11762605
申请日：2007-06-13
申请人： Deepak Tawri , Ronald S. Karr
发明人： Deepak Tawri , Ronald S. Karr
IPC分类号： G06F7/00 , G06F17/00 , G06F13/28
CPC分类号： G06F21/6218 , G06F11/1456 , G06F11/1471 , G06F11/2064 , G06F11/2071 , G06F2201/835 , G06F2221/2101 , G06F2221/2147 , H04L67/1095 , H04L69/40
摘要： In-band commands may be associated with a particular consistency interval and may indicate requested actions to be performed for that consistency interval. An application may desire to perform actions, such as additional backup, snapshots, etc. on stored data, when that data is in a consistent state from the application's point of view. In order to ensure that the data is in a consistent state, a consistency interval may be created on demand. A node may request a consistency interval by sending a consistency request message to a consistency interval coordinator, which in turn, establishes the consistency interval with all nodes in the distributed environment. After sending all write requests for the consistency interval, the node may then send the command message. Command messages may be stored in consistency logs along with write requests and a replication target, or other device, may read both the write requests and the command message.
摘要翻译：带内命令可以与特定的一致性间隔相关联，并且可以指示要为该一致性间隔执行的所请求的动作。当应用程序的观点来看，当数据处于一致状态时，应用程序可能希望对存储的数据执行诸如附加备份，快照等操作。为了确保数据处于一致状态，可以根据需要创建一致性间隔。节点可以通过向一致性间隔协调器发送一致性请求消息来请求一致性间隔，这又一次与分布式环境中的所有节点建立一致性间隔。发送所有一致性间隔的写入请求后，节点可以发送命令消息。命令消息可以与写请求一起存储在一致性日志中，并且复制目标或其他设备可以读取写请求和命令消息。

2. 发明授权

US07308545B1 Method and system of providing replication 有权
标题翻译：提供复制的方法和系统
公开(公告)号：US07308545B1
公开(公告)日：2007-12-11
申请号：US10723493
申请日：2003-11-26
申请人： Anand A. Kekre , Ronald S. Karr , John A. Colgrove , Kedar M. Karmarkar , Raghu Krishnamurthy , Saurabh R. Godbole , Ming Xu , Vikas K. Gupta , Deepak Tawri
发明人： Anand A. Kekre , Ronald S. Karr , John A. Colgrove , Kedar M. Karmarkar , Raghu Krishnamurthy , Saurabh R. Godbole , Ming Xu , Vikas K. Gupta , Deepak Tawri
IPC分类号： G06F12/00
CPC分类号： G06F11/2097 , G06F11/2023 , G06F2201/84 , H04L67/1095 , Y10S707/99953 , Y10S707/99955
摘要： A method and system of providing periodic replication is disclosed. According to one embodiment, a method is provided which comprises creating a storage object corresponding to a storage volume, wherein the storage object comprises a point-in-time copy of the storage volume and a storage volume map; and replicating the storage volume using the storage object.
摘要翻译：公开了提供周期性复制的方法和系统。根据一个实施例，提供了一种方法，其包括创建对应于存储卷的存储对象，其中所述存储对象包括所述存储卷的时间点副本和存储卷映射; 并使用存储对象复制存储卷。

3. 发明授权

US08401997B1 System and method for replication using consistency interval markers in a distributed storage environment 有权
标题翻译：在分布式存储环境中使用一致性间隔标记进行复制的系统和方法
公开(公告)号：US08401997B1
公开(公告)日：2013-03-19
申请号：US11230976
申请日：2005-09-20
申请人： Deepak Tawri , Ronald S. Karr , John A. Colgrove , Raghu Krishnamurthy , Anand A. Kekre , Robert Baird , Oleg Kiselev
发明人： Deepak Tawri , Ronald S. Karr , John A. Colgrove , Raghu Krishnamurthy , Anand A. Kekre , Robert Baird , Oleg Kiselev
IPC分类号： G06F7/00 , G06F17/00
CPC分类号： G06F11/2064 , G06F11/2071 , G06F2201/84 , G06F2201/855
摘要： Applications executing on various nodes in a distributed storage environment may write data to primary storage and may also replicate the data to secondary storage via a replication target. An interval coordinator may coordinate the periodic saving of checkpoints or snapshots of the replicated data. The interval coordinator may determine the length of consistency intervals between the saving of each of the checkpoints. Writes to the replication target from each of the nodes may be associated with the current consistency interval and, in some embodiments, with a unique per-node sequence number. When transitioning between consistency intervals, each node may be configured to temporarily suspend completion of the writes and to send the replication target a consistency interval marker indicating that the node has completed all writes for the current consistency interval.
摘要翻译：在分布式存储环境中在各种节点上执行的应用程序可以将数据写入主存储器，并且还可以经由复制目标将数据复制到辅助存储器。间隔协调器可以协调定期保存复制数据的检查点或快照。间隔协调器可以确定保存每个检查点之间的一致性间隔的长度。从每个节点写入复制目标可以与当前的一致性间隔相关联，并且在一些实施例中可以与唯一的每节点序列号相关联。当在一致性间隔之间转换时，可以将每个节点配置为临时挂起写入完成，并向复制目标发送指示节点已完成当前一致性间隔的所有写入的一致性间隔标记。

4. 发明授权

US07467265B1 System and method for block conflict resolution within consistency interval marker based replication 有权
标题翻译：基于一致性间隔标记的复制中的块冲突解决的系统和方法
公开(公告)号：US07467265B1
公开(公告)日：2008-12-16
申请号：US11231185
申请日：2005-09-20
申请人： Deepak Tawri , Ronald S. Karr , John A. Colgrove , Raghu Krishnamurthy , Anand A. Kekre , Robert Baird , Oleg Kiselev
发明人： Deepak Tawri , Ronald S. Karr , John A. Colgrove , Raghu Krishnamurthy , Anand A. Kekre , Robert Baird , Oleg Kiselev
IPC分类号： G06F12/00
CPC分类号： G06F12/0815 , G06F12/0813
摘要： One goal of consistency interval replication is to achieve a consistent copy of data generated by independent streams of writes from nodes in a clustered/distributed environment. Two writes to the same block from different nodes may arrive at a replication target in a different order from the order in which they were written to primary storage. A consistency interval coordinator may analyze a list of blocks modified during a consistency interval to determine conflict blocks written to by two different nodes during the same consistency interval. Conflict resolution may involve a node reading data for a conflict block from primary storage and forwarding it to the replication target or a node completing a suspended in-progress write for the conflict block. Once the conflicts have been resolved, the replication target may checkpoint the data modified during the interval and nodes may resume writes to the conflict blocks for the new interval.
摘要翻译：一致性间隔复制的一个目标是实现由集群/分布式环境中的独立的写入流生成的数据的一致副本。从不同节点对同一个块的两次写入可能会以与写入主存储的顺序不同的顺序到达复制目标。一致性间隔协调器可以分析在一致性间隔期间修改的块的列表，以确定在相同的一致性间隔期间由两个不同节点写入的冲突块。冲突解决可能涉及一个节点从主存储器读取冲突块的数据，并将其转发到复制目标或完成冲突块的暂停进行中写入的节点。一旦冲突已经解决，复制目标可以检查在间隔期间修改的数据，并且节点可以恢复对新间隔的冲突块的写入。

5. 发明授权

US07191299B1 Method and system of providing periodic replication 有权
标题翻译：提供周期性复制的方法和系统
公开(公告)号：US07191299B1
公开(公告)日：2007-03-13
申请号：US10436354
申请日：2003-05-12
申请人： Anand K. Kekre , Ronald S. Karr , John A. Colgrove , Kedar M. Karmarkar , Raghu Krishnamurthy , Saurabh R. Godbole , Ming Xu , Vikas K. Gupta , Deepak Tawri
发明人： Anand K. Kekre , Ronald S. Karr , John A. Colgrove , Kedar M. Karmarkar , Raghu Krishnamurthy , Saurabh R. Godbole , Ming Xu , Vikas K. Gupta , Deepak Tawri
IPC分类号： G06F12/00
CPC分类号： G06F11/2074 , G06F2201/84 , Y10S707/99953 , Y10S707/99955
摘要： A method and system of providing periodic replication is disclosed. According to one embodiment, a method is provided which comprises creating a storage object corresponding to a data volume, wherein the storage object comprises a point-in-time copy of the data volume and a data volume map; and replicating the data volume utilizing the storage object.
摘要翻译：公开了提供周期性复制的方法和系统。根据一个实施例，提供了一种方法，其包括创建对应于数据卷的存储对象，其中所述存储对象包括所述数据卷的时间点副本和数据卷映射; 并利用存储对象复制数据量。

6. 发明授权

US07885923B1 On demand consistency checkpoints for temporal volumes within consistency interval marker based replication 有权
标题翻译：基于一致性间隔标记的复制中的时间体积的按需一致性检查点
公开(公告)号：US07885923B1
公开(公告)日：2011-02-08
申请号：US11762608
申请日：2007-06-13
申请人： Deepak Tawri , Ronald S. Karr
发明人： Deepak Tawri , Ronald S. Karr
IPC分类号： G06F12/16
CPC分类号： G06F11/2064 , G06F11/2058 , G06F11/2074 , G06F2201/835 , G06F2201/855
摘要： In distributed storage environments, nodes may send replicated writes for temporal volumes and may be configured to request on-demand consistency intervals in order to allow multiple nodes to transition between timestamps for temporal data in a uniform and coordinated manner. In response to a request from a node for a consistency interval transition, a consistency interval coordinator may end a current consistency interval and start another and may provide coordination to various nodes to enable the nodes to transition from one timestamp to another, and thus from one temporal version to another, while prevent data corruption or inconsistency between the temporal versions. Additionally, periodic consistency intervals may be utilized to provide consistent and coordinated transitions between temporal timestamps. In some embodiments, replicated writes including temporal timestamp information may be stored persistent spillover logs allowing offline updating and versioning of data to temporal volumes.
摘要翻译：在分布式存储环境中，节点可以发送用于时间卷的复制写入，并且可以被配置为请求按需一致性间隔，以便允许多个节点以均匀和协调的方式在时间数据的时间戳之间转换。响应于来自节点的用于一致性间隔转换的请求，一致性间隔协调器可以结束当前的一致性间隔并启动另一个间隔，并且可以向各个节点提供协调以使节点能够从一个时间戳转换到另一个时间戳时间版本到另一个，同时防止数据损坏或时间版本之间的不一致。另外，可以利用周期性一致性间隔来提供时间时间戳之间一致和协调的转换。在一些实施例中，包括时间时间戳信息的复制的写入可以是存储的持久性溢出日志，允许将数据离线更新和版本化到时间量。

7. 发明授权

US07293154B1 System and method for optimizing storage operations by operating only on mapped blocks 有权
标题翻译：通过仅对映射块进行操作来优化存储操作的系统和方法
公开(公告)号：US07293154B1
公开(公告)日：2007-11-06
申请号：US10992370
申请日：2004-11-18
申请人： Ronald S. Karr , Michael Root , Charles H. Silvers , Deepak Tawri , Anurag Choudhary
发明人： Ronald S. Karr , Michael Root , Charles H. Silvers , Deepak Tawri , Anurag Choudhary
IPC分类号： G06F12/00
CPC分类号： G06F11/2082 , G06F11/2071 , G06F11/2097 , G06F2201/82
摘要： A system for optimizing storage operations by operating only on mapped blocks may include a first and a second set of one or more storage devices, a virtual device client and a virtual device server. The virtual device server may be configured to aggregate storage in the first set of one or more storage devices into a virtual storage device, and make the virtual device accessible to the virtual device server. In preparation for a synchronization operation, the virtual device server may obtain a map identifying one or more in-use regions of the virtual storage device from the virtual device client. The virtual device server may then perform the synchronization operation by copying the one or more in-use regions of the virtual storage device to the second set of one or more storage devices.
摘要翻译：通过仅对映射块进行操作来优化存储操作的系统可以包括一个或多个存储设备的第一和第二组，虚拟设备客户端和虚拟设备服务器。虚拟设备服务器可以被配置为将第一组一个或多个存储设备中的存储聚合到虚拟存储设备中，并使虚拟设备可以被虚拟设备服务器访问。为了准备同步操作，虚拟设备服务器可以从虚拟设备客户端获得识别虚拟存储设备的一个或多个使用中的区域的映射。然后，虚拟设备服务器可以通过将虚拟存储设备的一个或多个使用中的区域复制到一个或多个存储设备的第二组来执行同步操作。

8. 发明授权

US08046446B1 System and method for providing availability using volume server sets in a storage environment employing distributed block virtualization 有权
标题翻译：使用分布式块虚拟化的存储环境中的卷服务器集提供可用性的系统和方法
公开(公告)号：US08046446B1
公开(公告)日：2011-10-25
申请号：US10967902
申请日：2004-10-18
申请人： Ronald S. Karr , Chio Fai Aglaia Kong , Gopal Sharma , Robert Baird , Santosh Rao
发明人： Ronald S. Karr , Chio Fai Aglaia Kong , Gopal Sharma , Robert Baird , Santosh Rao
IPC分类号： G06F15/173
CPC分类号： H04L67/1097
摘要： A system for ensuring availability using volume server sets in a storage environment employing distributed block virtualization includes a plurality of volume servers, one or more volume clients, one or more physical block devices and a volume server manager. The volume server manager may be configured to designate the plurality of volume servers as a volume server set with an associated volume server set management policy, and to verify each volume server in the volume server set has access to storage within each block device. In addition, the volume server manager may be configured to designate a first volume server of the volume server set to aggregate storage within the block devices into a logical volume, to make the logical volume accessible to the volume clients, and to share configuration information about the volume with the other volume servers of the volume server set.
摘要翻译：在使用分布式块虚拟化的存储环境中使用卷服务器集确保可用性的系统包括多个卷服务器，一个或多个卷客户端，一个或多个物理块设备和卷服务器管理器。卷服务器管理器可以被配置为将多个卷服务器指定为具有相关联的卷服务器集管理策略的卷服务器，并且验证卷服务器集合中的每个卷服务器都可以访问每个块设备内的存储。此外，卷服务器管理器可以被配置为指定卷服务器集合的第一卷服务器，以将块设备内的存储聚合成逻辑卷，以使卷客户端可访问逻辑卷，并共享关于与卷服务器的其他卷服务器的卷设置的卷。

9. 发明授权

US07814128B2 Multi-volume file support 有权
标题翻译：多卷文件支持
公开(公告)号：US07814128B2
公开(公告)日：2010-10-12
申请号：US10449739
申请日：2003-05-30
申请人： Charles H. Silvers , Ronald S. Karr , John A. Colgrove
发明人： Charles H. Silvers , Ronald S. Karr , John A. Colgrove
IPC分类号： G06F17/30
CPC分类号： G06F3/0643 , G06F3/0605 , G06F3/0614 , G06F3/0631 , G06F3/0683 , G06F17/30067
摘要： A computer accessible medium comprises instructions which, when executed, receive a request to allocate one or more blocks for a file. At least one allocation policy is assigned to the file, wherein the allocation policy specifies one or more storage units on which the blocks are to be allocated. Additionally, if more than one storage unit is specified, the allocation policy includes a control indication indicating a mechanism for selecting among the storage units. The instructions, when executed, may also allocate blocks according to the allocation policy. In another implementation, a computer accessible medium comprises instructions which, when executed receive a request to allocate one or more blocks for a file in a filesystem and allocate blocks according to an allocation policy. Allocation policies are specifiable at two or more levels of granularity in the filesystem.
摘要翻译：计算机可访问介质包括指令，当被执行时，其接收到为文件分配一个或多个块的请求。至少一个分配策略被分配给文件，其中分配策略指定要在其上分配块的一个或多个存储单元。另外，如果指定了多于一个存储单元，则分配策略包括指示用于在存储单元之间进行选择的机制的控制指示。指令执行时也可以根据分配策略分配块。在另一实现中，计算机可访问介质包括指令，当被执行时接收到对文件系统中的文件分配一个或多个块的请求并根据分配策略分配块。分配策略可以在文件系统中的两个或多个粒度级别进行指定。

10. 发明授权

US07707372B1 Updating a change track map based on a mirror recovery map 有权
标题翻译：基于镜像恢复映射更新更改轨迹映射
公开(公告)号：US07707372B1
公开(公告)日：2010-04-27
申请号：US10882112
申请日：2004-06-30
申请人： Mukul Kumar , Ronald S. Karr , Subhojit Roy , Prasad Limaye , Raghu Krishnamurthy , Anand A. Kekre
发明人： Mukul Kumar , Ronald S. Karr , Subhojit Roy , Prasad Limaye , Raghu Krishnamurthy , Anand A. Kekre
IPC分类号： G06F12/00
CPC分类号： G06F11/2082 , G06F2201/84
摘要： One method of updating a change track map involves resetting a mirror recovery map for a data volume. Just before the mirror recovery map is reset, a change track map for the data volume can be updated, using the mirror recovery map. The mirror recovery map can be reset by a data element of a data processing system, while the change track map can be updated by a control element of the data processing system.
摘要翻译：更新更改轨迹映射的一种方法涉及重置数据卷的镜像恢复映射。在镜像恢复映射重置之前，可以使用镜像恢复映射更新数据卷的更改轨迹图。可以通过数据处理系统的数据元素来重置镜像恢复映射，同时可以通过数据处理系统的控制元件来更新改变轨迹图。

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