公开(公告)号：US20120042202A1

公开(公告)日：2012-02-16

申请号：US13278947

申请日：2011-10-21

Applicant: Thomas Rudolf Wenzel

Inventor： Thomas Rudolf Wenzel

IPC: G06F11/20

CPC classification number: G06F11/2023 ,  G06F11/2025 ,  G06F11/2028 ,  G06F11/2046 ,  H04L41/069 ,  H04L67/1097 ,  H04L69/18 ,  H04L69/40

Abstract: A cluster system comprises a plurality of nodes that provides data-access service to a shared storage, each node having at least one failover partner node for taking over services of a node if the node fails. Each node may produce write logs for the shared storage and periodically send write logs at predetermined time intervals to a global device which stores write logs from each node. The global device may detect failure of a node by monitoring time intervals of when write logs are received from each node. Upon detection of a node failure, the global device may provide the write logs of the failed node to one or more partner nodes for performing the write logs on the shared storage. Write logs may be transmitted only between nodes and the global device to reduce data exchanges between nodes and conserving I/O resources of the nodes.

Abstract translation: 集群系统包括向共享存储器提供数据访问服务的多个节点，每个节点具有至少一个故障切换伙伴节点，用于在节点故障时接管节点的服务。 每个节点可以产生用于共享存储器的写入日志，并且以预定的时间间隔周期性地发送写入日志到存储来自每个节点的写入日志的全局设备。 全局设备可以通过监视从每个节点接收到写入日志的时间间隔来检测节点的故障。 在检测到节点故障时，全局设备可以将故障节点的写入日志提供给一个或多个伙伴节点，以在共享存储器上执行写入日志。 写日志只能在节点和全局设备之间传输，以减少节点之间的数据交换并节省节点的I / O资源。

公开(公告)号：US08261125B2

公开(公告)日：2012-09-04

申请号：US13278947

申请日：2011-10-21

Applicant: Thomas Rudolf Wenzel

Inventor： Thomas Rudolf Wenzel

IPC: G06F11/07

CPC classification number: G06F11/2023 ,  G06F11/2025 ,  G06F11/2028 ,  G06F11/2046 ,  H04L41/069 ,  H04L67/1097 ,  H04L69/18 ,  H04L69/40

Abstract: A cluster system comprises a plurality of nodes that provides data-access service to a shared storage, each node having at least one failover partner node for taking over services of a node if the node fails. Each node may produce write logs for the shared storage and periodically send write logs at predetermined time intervals to a global device which stores write logs from each node. The global device may detect failure of a node by monitoring time intervals of when write logs are received from each node. Upon detection of a node failure, the global device may provide the write logs of the failed node to one or more partner nodes for performing the write logs on the shared storage. Write logs may be transmitted only between nodes and the global device to reduce data exchanges between nodes and conserving I/O resources of the nodes.

Abstract translation: 集群系统包括向共享存储器提供数据访问服务的多个节点，每个节点具有至少一个故障切换伙伴节点，用于在节点故障时接管节点的服务。 每个节点可以产生用于共享存储器的写入日志，并且以预定的时间间隔周期性地发送写入日志到存储来自每个节点的写入日志的全局设备。 全局设备可以通过监视从每个节点接收到写入日志的时间间隔来检测节点的故障。 在检测到节点故障时，全局设备可以将故障节点的写入日志提供给一个或多个伙伴节点，以在共享存储器上执行写入日志。 写日志只能在节点和全局设备之间传输，以减少节点之间的数据交换并节省节点的I / O资源。

公开(公告)号：US08069366B1

公开(公告)日：2011-11-29

申请号：US12432404

申请日：2009-04-29

Applicant: Thomas Rudolf Wenzel

Inventor： Thomas Rudolf Wenzel

IPC: G06F11/07

CPC classification number: G06F11/2023 ,  G06F11/2025 ,  G06F11/2028 ,  G06F11/2046 ,  H04L41/069 ,  H04L67/1097 ,  H04L69/18 ,  H04L69/40

Abstract: A cluster system comprises a plurality of nodes that provides data-access service to a shared storage, each node having at least one failover partner node for taking over services of a node if the node fails. Each node may produce write logs for the shared storage and periodically send write logs at predetermined time intervals to a global device which stores write logs from each node. The global device may detect failure of a node by monitoring time intervals of when write logs are received from each node. Upon detection of a node failure, the global device may provide the write logs of the failed node to one or more partner nodes for performing the write logs on the shared storage. Write logs may be transmitted only between nodes and the global device to reduce data exchanges between nodes and conserving I/O resources of the nodes.

Abstract translation: 集群系统包括向共享存储器提供数据访问服务的多个节点，每个节点具有至少一个故障切换伙伴节点，用于在节点故障时接管节点的服务。 每个节点可以产生用于共享存储器的写入日志，并且以预定的时间间隔周期性地发送写入日志到存储来自每个节点的写入日志的全局设备。 全局设备可以通过监视从每个节点接收到写入日志的时间间隔来检测节点的故障。 在检测到节点故障时，全局设备可以将故障节点的写入日志提供给一个或多个伙伴节点，以在共享存储器上执行写入日志。 写日志只能在节点和全局设备之间传输，以减少节点之间的数据交换并节省节点的I / O资源。

公开(公告)号：US07827441B1

公开(公告)日：2010-11-02

申请号：US11929581

申请日：2007-10-30

Applicant: Thomas Rudolf Wenzel

Inventor： Thomas Rudolf Wenzel

IPC: G06F11/00 ,  G06F11/20

CPC classification number: G06F11/2089 ,  G06F11/1076 ,  G06F11/1425 ,  G06F11/1666 ,  G06F11/2097 ,  G06F2211/1057

Abstract: A disk-less quorum device in a clustered storage system includes non-volatile memory to store status information regarding the cluster and each storage controller in the cluster. The quorum device maintains a bitmap, shared by the controllers in the cluster, in the non-volatile memory. The bitmap indicates the status of a write operation to any data block or parity block. A “dirty” data unit in the bitmap indicates that a write operation has been submitted but is not yet finished. Upon submitting a write request (to update a data block or a parity block) to the storage facility, a controller sets the corresponding data unit “dirty” in the bitmap. After receiving an acknowledgement from the storage facility indicating that the operation has been completed, the controller clears the corresponding data unit. If a controller fails during a write operation, another controller can use the bitmap to re-establish data consistency.

Abstract translation: 集群存储系统中的无盘仲裁设备包括非易失性存储器，用于存储关于集群的状态信息和集群中的每个存储控制器。 仲裁设备在非易失性存储器中维护位于集群中的控制器共享的位图。 位图指示对任何数据块或奇偶校验块的写操作的状态。 位图中的“脏”数据单元表示写入操作已经提交但尚未完成。 在向存储设备提交写请求（更新数据块或奇偶校验块）时，控制器将相应的数据单元“脏”设置在位图中。 在从存储设施接收到指示操作已经完成的确认之后，控制器清除相应的数据单元。 如果控制器在写入操作期间发生故障，则另一个控制器可以使用位图重新建立数据一致性。