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    Method and apparatus for migrating data in a clustered computer system environment
    1.
    发明授权
    Method and apparatus for migrating data in a clustered computer system environment 有权
    在群集计算机系统环境中迁移数据的方法和装置

    公开(公告)号：US07805583B1

    公开(公告)日：2010-09-28

    申请号：US10421500

    申请日：2003-04-23

    申请人： Stephen J. Todd ,  Steven M. Blumenau ,  Zoran Cakeljic ,  Donagh Buckley ,  Conor Fox ,  John Philip Bell, II

    发明人： Stephen J. Todd ,  Steven M. Blumenau ,  Zoran Cakeljic ,  Donagh Buckley ,  Conor Fox ,  John Philip Bell, II

    IPC分类号： G06F12/00 ,  G06F13/00

    CPC分类号： G06F3/0647 ,  G06F3/0617 ,  G06F3/067

    摘要： Methods and apparatus for performing a data migration in a clustered computer system. In one aspect, the availability of the data being migrated is maintained during the migration. In another aspect, a data set is migrated by a transfer utility in one of the hosts in the cluster, and in response to a failure of the host, the migration is resumed without restarting from the beginning point of the data set. In a further embodiment, the hosts in the cluster have agents associated therewith to manage the data migration, and prior to taking at least one action associated with the data migration, the agents coordinate to ensure that the hosts in the cluster are prepared to have the at least one action taken.

    摘要翻译： 在群集计算机系统中执行数据迁移的方法和装置。 在一个方面，迁移期间维护正在迁移的数据的可用性。 在另一方面，数据集由集群中的一个主机中的传输实用程序迁移，并且响应于主机的故障，恢复迁移而不从数据集的起始点重启。 在另一实施例中，群集中的主机具有与其相关联的代理以管理数据迁移，并且在采取与数据迁移相关联的至少一个动作之前，代理协调以确保群集中的主机准备具有 至少采取一项行动。

    Method and apparatus for undoing a data migration in a computer system
    3.
    发明授权
    Method and apparatus for undoing a data migration in a computer system 有权
    用于撤销计算机系统中的数据迁移的方法和装置

    公开(公告)号：US07093088B1

    公开(公告)日：2006-08-15

    申请号：US10421252

    申请日：2003-04-23

    申请人： Stephen J. Todd ,  Conor Fox ,  Donagh Buckley ,  John Philip Bell, II

    发明人： Stephen J. Todd ,  Conor Fox ,  Donagh Buckley ,  John Philip Bell, II

    IPC分类号： G06F12/16

    CPC分类号： G06F11/1443 ,  G06F3/0607 ,  G06F3/0665 ,  G06F3/067 ,  G06F11/1415 ,  G06F11/2071 ,  Y10S707/99953

    摘要： A method and apparatus for managing a migration of a data set from at least one first storage location to at least one second storage location, wherein read requests to the data set from at least one application program executing on a computer system initially are serviced from the at least one first storage location. The data set is copied from the at least one first storage location to the at least one second storage location, and then at least one aspect of the computer system is modified so that read requests to the data set are serviced from the at least one second storage location to achieve the migration. In one embodiment, the migration is subsequently undone by modifying the at least one aspect of the computer system so that read requests to the data set are again serviced from the at least one first storage location. In another embodiment, after the migration is performed, a determination is made as to whether to finalize the migration.

    摘要翻译： 一种用于管理从至少一个第一存储位置到至少一个第二存储位置的数据集的迁移的方法和装置，其中最初从在计算机系统上执行的至少一个应用程序对所述数据集的读取请求从 至少一个第一存储位置。 将数据集从至少一个第一存储位置复制到至少一个第二存储位置，然后对计算机系统的至少一个方面进行修改，以便从至少一个第二个服务到数据集的读取请求 存储位置实现迁移。 在一个实施例中，随后通过修改计算机系统的至少一个方面来撤销迁移，使得对数据集的读取请求再次从至少一个第一存储位置提供服务。 在另一个实施例中，在执行迁移之后，确定是否完成迁移。