利索-全球专利检索

  1. 登录
  2. 注册
发明公开
CN111124746A 管理独立盘冗余阵列的方法、设备和计算机可读介质 审中-实审

管理独立盘冗余阵列的方法、设备和计算机可读介质
摘要：
本公开的实施例涉及管理独立盘冗余阵列(RAID)的方法、设备和计算机可读介质。一种方法包括：响应于RAID中的条带被创建，在为条带分配的映射信息块中创建条带的第一映射信息，RAID建立在由多个盘划分而来的多个区段上，条带包括多个区段中的第一组区段，第一映射信息记录第一组区段在多个盘上的相应位置；响应于第一组区段中的第一区段所在的第一盘发生故障，通过利用多个区段中的第二区段替代第一组区段中的第一区段，来获得对应于条带的第二组区段；在映射信息块中创建条带的第二映射信息，以记录第二组区段在多个盘上的相应位置；响应于第一盘从故障中恢复，基于映射信息块中的第一映射信息和第二映射信息来重建条带中的数据。
摘要（英）：

A technique involves: in response to establishing a stripe in a Redundant Array of Independent Disks (RAID), generating first mapping information of the stripe in a block allocated for the stripe, the RAID being built based on extents obtained by dividing disks, the stripe including a first extent set, the first mapping information recording respective disk locations of the first extent set; in response to a failure occurring in a first disk where a first extent in the first extent set is located, replacing the first extent with a second extent to obtain a second extent set corresponding to the stripe; generating second mapping information of the stripe in the block, to record respective disk locations of the second extent set; and in response to the first disk being recovered from the failure, restoring data in the stripe based on the first mapping information and the second mapping information.

公开/授权文献
0/0