Write omission detector, write omission detecting method, and computer product
    20.
    发明申请
    Write omission detector, write omission detecting method, and computer product 有权
    写遗漏检测器,省略检测方法和计算机产品

    公开(公告)号:US20080151407A1

    公开(公告)日:2008-06-26

    申请号:US11902772

    申请日:2007-09-25

    IPC分类号: G11B5/09

    摘要: A device adaptor that controls a disk, wherein a storage area is divided into a plurality of blocks, detects a block that includes a read error. Next, the device adaptor detects a write omission in blocks that are within a predetermined range from the block that includes the read error. To be specific, the device adaptor reads data from the blocks that are in the vicinity of the block that includes the unrecovered read error in a suspect disk. Next, the device adaptor reads from a redundant disk, data of a block that corresponds to the block that includes the unrecovered read error (data of block “B” in an example shown in FIG. 1) and compares the read data to the data read from the suspect disk to detect the write omission.

    摘要翻译: 一种控制盘的设备适配器,其中存储区被分成多个块,检测包括读错误的块。 接下来,设备适配器检测到在来自包括读取错误的块的预定范围内的块中的写入省略。 具体来说,设备适配器从可疑磁盘中包含未恢复的读取错误的块附近的块读取数据。 接下来,设备适配器从冗余磁盘读取与包含未恢复的读取错误的块相对应的块的数据(在图1所示的示例中的块“B”的数据)),并将读取的数据与数据 从可疑磁盘读取以检测写入的遗漏。