Methods and physical computer storage media for transferring de-duplicated data organized in virtual volumes to a target set of physical media for forming a bitmap and creating a volume map
    1.
    发明授权
    Methods and physical computer storage media for transferring de-duplicated data organized in virtual volumes to a target set of physical media for forming a bitmap and creating a volume map 失效
    用于将在虚拟卷中组织的去重复数据传送到物理介质的目标集合以形成位图并创建卷映射的方法和物理计算机存储介质

    公开(公告)号:US08566291B2

    公开(公告)日:2013-10-22

    申请号:US13534115

    申请日:2012-06-27

    IPC分类号: G06F17/30 G06F12/00

    摘要: A method include forming an initial bitmap from the de-duplicated data on virtual volumes, sorting discrete blocks according to frequency of occurrence to form a revised bitmap to first include a plurality of most common discrete blocks, creating a physical volume map from the revised bitmap, reviewing, from the physical volume map, an initial virtual volume of the virtual volumes contained on a corresponding original physical volume, to determine whether moving the initial virtual volume to a different physical volume reduces the total number of data blocks in the physical volume map, deleting the initial virtual volume from its corresponding original physical volume and adding the initial virtual volume to the different original physical volume to create a revised physical volume map including revised physical volumes, and writing the revised physical volumes to the target set of physical media using the revised physical volume map.

    摘要翻译: 一种方法包括从虚拟卷上的去重复数据中形成初始位图,根据发生频率对离散块进行排序,以形成修改后的位图,以首先包括多个最常见的离散块,从修改的位图创建物理卷映射 从物理卷映射查看包含在相应原始物理卷上的虚拟卷的初始虚拟卷,以确定将初始虚拟卷移动到不同的物理卷是否减少了物理卷映射中的数据块的总数 ,从其相应的原始物理卷中删除初始虚拟卷,并将初始虚拟卷添加到不同的原始物理卷,以创建包括修订后的物理卷的修订后的物理卷映射,以及使用 修订后的体积图。