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    MANAGING REDUNDANT IMMUTABLE FILES USING DEDUPLICATION IN STORAGE CLOUDS
    1.
    发明申请
    MANAGING REDUNDANT IMMUTABLE FILES USING DEDUPLICATION IN STORAGE CLOUDS 有权
    使用存储云中的重复管理冗余不可变文件

    公开(公告)号：US20150039570A1

    公开(公告)日：2015-02-05

    申请号：US14516740

    申请日：2014-10-17

    Applicant: International Business Machines Corporation

    Inventor： Gaurav CHHAUNKER ,  Bhushan P. JAIN ,  Sandeep R. PATIL ,  Sri RAMANATHAN ,  Matthew B. TREVATHAN

    IPC: G06F17/30 ,  H04L29/08

    CPC classification number: G06F17/3015 ,  G06F7/00 ,  G06F17/30 ,  G06F17/30091 ,  G06F17/30117 ,  G06F17/30156 ,  G06F17/30194 ,  G06F17/30377 ,  H04L67/02

    Abstract: A method includes receiving a request to save a first file as immutable. The method also includes searching for a second file that is saved and is redundant to the first file. The method further includes determining the second file is one of mutable and immutable. When the second file is mutable, the method includes saving the first file as a master copy, and replacing the second file with a soft link pointing to the master copy. When the second file is immutable, the method includes determining which of the first and second files has a later expiration date and an earlier expiration date, saving the one of the first and second files with the later expiration date as a master copy, and replacing the one of the first and second files with the earlier expiration date with a soft link pointing to the master copy.

    Abstract translation: 一种方法包括接收将第一个文件保存为不可变的请求。 该方法还包括搜索被保存并且对第一文件是多余的第二文件。 该方法还包括确定第二文件是可变和不可变的之一。 当第二个文件是可变的时，该方法包括将第一个文件保存为主副本，并用指向主副本的软链接替换第二个文件。 当第二文件是不可变的时，该方法包括确定第一和第二文件中的哪一个具有以后的到期日期和较早的截止日期，将具有较晚截止日期的第一和第二文件中的一个保存为主副本，并将其替换 第一个和第二个文件之一，具有早期到期日期，软链接指向主副本。

    APPLICATION-CONTROLLED SUB-LUN LEVEL DATA MIGRATION
    2.
    发明申请
    APPLICATION-CONTROLLED SUB-LUN LEVEL DATA MIGRATION 审中-公开
    应用控制的子LUN级数据迁移

    公开(公告)号：US20130325802A1

    公开(公告)日：2013-12-05

    申请号：US13801746

    申请日：2013-03-13

    Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION

    Inventor： Pankaj S. BAVISHI ,  Gaurav CHHAUNKER ,  Carl E. JONES ,  Pankaj O. KHANDELWAL ,  Subhojit ROY

    IPC: G06F17/30

    CPC classification number: G06F16/214

    Abstract: An application programming interface (API), functioning as an interface between a storage controller and an owning application, is used to migrate, from a specified source LUN to a specified target LUN, at least one specified sub-LUN data chunk, the at least one specified sub-LUN data chunk having a predefined chunk size fixed by the storage controller. A specified total migration size is incrementally reduced by each completed migration of the at least one specified sub-LUN data chunk until the total migration size is zero and the migration is completed.

    Abstract translation: 用作存储控制器和拥有应用程序之间的接口的应用程序编程接口（API）用于从指定的源LUN向指定的目标LUN迁移至少一个指定的子LUN数据块，至少 一个指定的子LUN数据块具有由存储控制器固定的预定义块大小。 指定的总迁移大小将由至少一个指定的子LUN数据块的每次完成迁移逐步减少，直到总迁移大小为零，并且迁移完成。

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