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    EFFICIENT FLASHCOPY BACKUP AND MOUNT, CLONE, OR RESTORE COLLISION AVOIDANCE USING DYNAMIC VOLUME ALLOCATION WITH REUSE
    4.
    发明申请
    EFFICIENT FLASHCOPY BACKUP AND MOUNT, CLONE, OR RESTORE COLLISION AVOIDANCE USING DYNAMIC VOLUME ALLOCATION WITH REUSE 有权
    有效的闪存备份和安装，克隆或恢复使用动态分配与重用的冲突避免

    公开(公告)号：US20150286429A1

    公开(公告)日：2015-10-08

    申请号：US14243345

    申请日：2014-04-02

    Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION

    Inventor： Joseph W. DAIN ,  Gregory T. KISHI ,  Osnat SHASHA ,  Christopher ZAREMBA

    IPC: G06F3/06

    CPC classification number: G06F11/1456 ,  G06F11/1448

    Abstract: For efficient Flashcopy backup and mount, clone, or restore collision avoidance with reuse using dynamic volume allocation, performing at least one attempt to reuse an existing FlashCopy target volume that is not currently being used for at least one of a mount task, a clone task, and a restore task at the same time for a FlashCopy backup. If the at least one attempt to reuse the existing FlashCopy target volume fails, dynamically allocate a new Flashcopy target volume for the Flashcopy backup.

    Abstract translation: 对于高效的Flashcopy备份和安装，克隆或恢复与使用动态卷分配重用的冲突避免，执行至少一次尝试重新使用当前不用于至少一个装载任务，克隆任务的现有FlashCopy目标卷 ，以及FlashCopy备份的同时还原任务。 如果至少一次尝试重新使用现有的FlashCopy目标卷失败，则为Flashcopy备份动态分配新的Flashcopy目标卷。

    REVERSE RESYNCHRONIZATION BY A SECONDARY DATA SOURCE WHEN A DATA DESTINATION HAS MORE RECENT DATA
    5.
    发明申请
    REVERSE RESYNCHRONIZATION BY A SECONDARY DATA SOURCE WHEN A DATA DESTINATION HAS MORE RECENT DATA 有权
    当数据目的地有更多的数据时，二次数据源的反向重新生成

    公开(公告)号：US20160378625A1

    公开(公告)日：2016-12-29

    申请号：US14754324

    申请日：2015-06-29

    Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION

    Inventor： Daniel M. AIZER ,  Yuval BEN-HORIN ,  Michael KELLER ,  Osnat SHASHA

    IPC: G06F11/20 ,  G06F3/06

    CPC classification number: G06F11/2069 ,  G06F3/0619 ,  G06F3/065 ,  G06F3/067 ,  G06F11/00 ,  G06F11/2058 ,  G06F2201/805

    Abstract: Methods, computing systems and computer program products implement embodiments of the present invention that include configuring a first storage system to mirror first storage regions to corresponding second storage regions in a second storage system via a first data connection, and to mirror the first storage regions to corresponding third storage regions in a third storage system via a second data connection. Upon the second storage system receiving, subsequent to detecting a failure of the first storage system, a host I/O request to retrieve data from a given second storage region and determining that the respective timestamp of the corresponding third storage region on the third storage system is more recent than the respective timestamp of the given second storage region on the second storage system, the second storage system retrieves, via a third data connection, the data from the corresponding third storage region on the third storage system.

    Abstract translation: 方法，计算系统和计算机程序产品实现本发明的实施例，包括配置第一存储系统以经由第一数据连接将第一存储区域镜像到第二存储系统中的对应的第二存储区域，并将第一存储区域镜像到 通过第二数据连接在第三存储系统中的对应的第三存储区域。 在第二存储系统接收到在检测到第一存储系统的故障之后，从给定的第二存储区域检索数据并确定第三存储系统上相应的第三存储区域的相应时间戳的主机I / O请求 比第二存储系统上给定的第二存储区域的相应时间戳更新，第二存储系统经由第三数据连接从第三存储系统上的对应的第三存储区域检索数据。

    REBUILD ROLLBACK SUPPORT IN DISTRIBUTED SDS SYSTEMS
    10.
    发明申请
    REBUILD ROLLBACK SUPPORT IN DISTRIBUTED SDS SYSTEMS 有权

    公开(公告)号：US20180089040A1

    公开(公告)日：2018-03-29

    申请号：US15277271

    申请日：2016-09-27

    Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION

    Inventor： Ram ELRON ,  Michael KELLER ,  Rivka M. MATOSEVICH ,  Osnat SHASHA

    IPC: G06F11/14 ,  G06F3/06 ,  G06F11/16

    CPC classification number: G06F11/1471 ,  G06F3/0619 ,  G06F3/065 ,  G06F3/0653 ,  G06F3/067 ,  G06F11/1662 ,  G06F2201/805 ,  G06F2201/875

    Abstract: Methods, computing systems and computer program products implement embodiments of the present invention that include mirroring, in a distributed storage system having multiple storage nodes, data on the storage nodes. Upon the distributed storage system detecting a loss of communication with a given storage node, a log including updates to the data stored in the given storage node is recorded and, the recorded updates can be applied to the given storage node upon communication with the given storage node being reestablished. In some embodiments, the distributed storage system may be configured as a software defined storage system where the storage nodes can be implemented as either virtual machines or software containers. In additional embodiments, upon detecting the loss of communication, a redistribution of the mirrored data among remaining storage nodes is initiated upon detecting the loss of communication, and the redistribution is rolled back upon reestablishing the communication.

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