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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

US08438347B1 Techniques for proactive synchronization of backups on replication targets 有权
标题翻译：在复制目标上主动同步备份的技术
公开(公告)号：US08438347B1
公开(公告)日：2013-05-07
申请号：US12056871
申请日：2008-03-27
申请人： Deepak Tawri , Subrahmanyam Josyula , Sasidharan Krishnan
发明人： Deepak Tawri , Subrahmanyam Josyula , Sasidharan Krishnan
IPC分类号： G06F12/00
CPC分类号： G06F11/2071 , G06F11/1456 , G06F2201/82 , G06F2201/855
摘要： Techniques for proactive synchronization of backups on replication targets are disclosed. In one particular exemplary embodiment, the techniques may be realized as a method for proactive synchronization of a backup on a replication target comprising reading a stored replication request to obtain replication data address information, sending the replication data address information to a replication target, receiving the replication data address information at the replication target, and copying data associated with the received replication data address information to a backup.
摘要翻译：公开了用于复制目标上备份的主动同步的技术。在一个特定的示例性实施例中，这些技术可以被实现为用于在复制目标上进行备份的主动同步的方法，包括读取所存储的复制请求以获得复制数据地址信息，将复制数据地址信息发送到复制目标，复制目标的复制数据地址信息，以及将与所接收的复制数据地址信息相关联的数据复制到备份。

3. 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。

4. 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。

5. 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。

6. 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。

7. 发明授权

US08825870B1 Techniques for non-disruptive transitioning of CDP/R services 有权
标题翻译： CDP / R服务的非破坏性转换技术
公开(公告)号：US08825870B1
公开(公告)日：2014-09-02
申请号：US11771608
申请日：2007-06-29
申请人： Deepak Tawri , Abhay Kumar Singh , Raghu Krishnamurthy , Gopal Sharma
发明人： Deepak Tawri , Abhay Kumar Singh , Raghu Krishnamurthy , Gopal Sharma
IPC分类号： G06F15/16 , G06F15/173 , G06F15/177 , G06F15/167 , G06F12/00
CPC分类号： H04L12/56
摘要： Techniques for CDP/R services are disclosed. In one particular exemplary embodiment, the techniques may be realized as a method of transitioning continuous data protection and replication comprising determining whether a first appliance node connected to a switched fabric contains one or more transactions received from a host node, unregistering a world wide port name of a target port of the first appliance node, registering the world wide port name to a target port of a second appliance node connected to the switched fabric, associating one or more logical unit numbers of the second appliance node with the target port of the second appliance node, exporting the one or more logical unit numbers of the second appliance node, logging the target port of the second appliance node into a switched fabric, and logging the target port of the second appliance node into a remote node port of the host node.
摘要翻译：公开了CDP / R服务的技术。在一个特定的示例性实施例中，可以将技术实现为转换连续数据保护和复制的方法，包括确定连接到交换结构的第一设备节点是否包含从主机节点接收的一个或多个事务，注销全球端口名称将所述全球端口名称注册到连接到所述交换结构的第二设备节点的目标端口，将所述第二设备节点的一个或多个逻辑单元号与所述第二设备节点的目标端口相关联导出第二设备节点的一个或多个逻辑单元号，将第二设备节点的目标端口记录到交换结构中，以及将第二设备节点的目标端口记录到主机节点的远程节点端口中。

8. 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。

9. 发明授权

US07809691B1 System and method of applying incremental changes prior to initialization of a point-in-time copy 有权
标题翻译：在初始化时间点副本之前应用增量更改的系统和方法
公开(公告)号：US07809691B1
公开(公告)日：2010-10-05
申请号：US11063133
申请日：2005-02-22
申请人： Kedar M. Karmarkar , Deepak Tawri , Raghu Krishnamurthy
发明人： Kedar M. Karmarkar , Deepak Tawri , Raghu Krishnamurthy
IPC分类号： G06F17/30 , G06F12/00
CPC分类号： G06F11/1448 , G06F11/1464 , G06F11/1469 , G06F11/1658 , G06F11/202
摘要： Various systems and methods are disclosed for applying incremental changes prior to initialization of a point-in-time copy. For example, one method involves identifying an incremental change to information stored on a primary device. The incremental change is identified subsequent to a first point in time. The incremental change is applied to a first target device, prior to completing initialization of a second target device. The initialization of the second target device initializes the second target device as a point-in-time copy of the primary device. The point-in-time copy of the primary device is a copy of the primary device at the first point in time.
摘要翻译：公开了用于在初始化时间点副本之前应用增量变化的各种系统和方法。例如，一种方法涉及识别存储在主设备上的信息的增量变化。在第一个时间点之后确定增量更改。在完成第二目标设备的初始化之前，增量变化被应用于第一目标设备。第二目标设备的初始化将第二目标设备初始化为主设备的时间点副本。主设备的时间点副本是第一个时间点的主设备的副本。

10. 发明授权

US09164913B1 Method and system for offloading copy on write operations 有权
标题翻译：在写操作中卸载复制的方法和系统
公开(公告)号：US09164913B1
公开(公告)日：2015-10-20
申请号：US13447521
申请日：2012-04-16
申请人： Deepak Tawri , Sanjeev Jorapur
发明人： Deepak Tawri , Sanjeev Jorapur
IPC分类号： G06F15/167 , G06F12/00 , G06F3/06 , G06F12/08
CPC分类号： G06F12/0866 , G06F3/06 , G06F3/061 , G06F3/065 , G06F3/067
摘要： Machine implemented method and system for processing a write request for a copy on write (COW) enabled write operation to write to a logical unit number (LUN) for which a replicated LUN exists is provided. An adapter coupled to a computing system and interfacing with the LUN and the replicated LUN receives the write request having an indicator indicating that the write request is for the COW enabled write operation. The adapter issues a read request to the LUN to read previous information from the LUN; temporarily stores the previous information at a memory storage location of the adapter; writes the previous information to the replicated LUN; writes the information based on the write request to the LUN; and notifies the computing system indicating that the write request for the COW enabled write operation has been completed.
摘要翻译：机器实现的方法和系统，用于处理对写入（COW）启用的写入操作的写入请求以写入存在复制LUN的逻辑单元号（LUN）。耦合到计算系统并且与LUN和复制LUN接口的适配器接收具有指示写入请求用于启用COW的写入操作的指示符的写入请求。适配器向LUN发出读取请求以从LUN读取以前的信息; 将先前的信息临时存储在适配器的存储器存储位置; 将以前的信息写入复制的LUN; 将写入请求的信息写入LUN; 并且通知计算系统指示对COW使能的写入操作的写入请求已经完成。

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