Deferred volume metadata invalidation
    12.
    发明授权
    Deferred volume metadata invalidation 有权
    延迟卷元数据无效

    公开(公告)号:US07930588B2

    公开(公告)日:2011-04-19

    申请号:US12361009

    申请日:2009-01-28

    IPC分类号: G06F11/00

    摘要: A method, system, and computer program product for managing modified metadata in a storage controller cache pursuant to a recovery action by a processor in communication with a memory device is provided. A count of modified metadata tracks for a storage rank is compared against a predetermined criterion. If the predetermined criterion is met, a storage volume having the storage rank is designated with a metadata invalidation flag to defer metadata invalidation of the modified metadata tracks until after the recovery action is performed.

    摘要翻译: 提供了一种用于根据处理器与存储器设备通信的恢复动作来管理存储控制器高速缓存中的修改的元数据的方法,系统和计算机程序产品。 将存储等级的经修改的元数据轨道的计数与预定标准进行比较。 如果满足预定标准,则使用元数据无效标志指定具有存储等级的存储卷,以延迟修改的元数据轨迹的元数据无效,直到执行恢复动作为止。

    Method and means for making a dual volume level copy in a DASD storage
subsystem subject to updating during the copy interval
    14.
    发明授权
    Method and means for making a dual volume level copy in a DASD storage subsystem subject to updating during the copy interval 失效
    在复制间隔期间在待更新的DASD存储子系统中制作双卷级副本的方法和装置

    公开(公告)号:US5875479A

    公开(公告)日:1999-02-23

    申请号:US779577

    申请日:1997-01-07

    IPC分类号: G06F11/14 G06F12/16

    CPC分类号: G06F11/1466

    摘要: A volume-to-volume copy method on a DASD storage subsystem concurrent with host CPU application execution and referencing of data on a primary. In this method, updates to data made on a primary volume after the element was copied during a first pass will be deferred and copied only during a second pass rather than interrupting the first pass. This accumulation and deferral of updates to a second pass shortens the volume copy time and reduces application referencing delay.

    摘要翻译: DASD存储子系统上的卷到卷的复制方法与主机CPU应用程序的执行并行,并引用主数据。 在这种方法中,在第一遍复制元素之后在主卷上进行的数据的更新将仅在第二次传递期间被延迟和复制,而不是中断第一遍。 这种累积和延迟更新到第二遍可缩短卷复制时间,并减少应用程序引用延迟。