公开(公告)号：US09983941B2

公开(公告)日：2018-05-29

申请号：US14639657

申请日：2015-03-05

Applicant: Huawei Technologies Co., Ltd.

Inventor： Feng Zhang ,  Fengtao Teng

IPC: G06F11/14 ,  G06F17/30 ,  G06F11/20

CPC classification number: G06F11/1451 ,  G06F11/1435 ,  G06F11/1448 ,  G06F11/2058 ,  G06F17/30073 ,  G06F17/30194 ,  G06F2201/84

Abstract: In a data recovery method, there are a server and a plurality of storage devices each storing a copy of a data block. The server divides each copy of the data block into N segments corresponding to a sequence of N partitions. And then, the server constructs a plurality of different trial data blocks each including N segments corresponding to the sequence of N partitions. After that, the server calculates a check code for each trial data block, and continues to identify a trial data block having a check code identical to a pre-stored standard check code of the data block. At last, the server replaces at least one of the copies of the data block with the identified trial data block having the check code identical to the pre-stored standard check code.

公开(公告)号：US20150178170A1

公开(公告)日：2015-06-25

申请号：US14639657

申请日：2015-03-05

Applicant: Huawei Technologies Co., Ltd.

Inventor： Feng Zhang ,  Fengtao Teng

IPC: G06F11/14 ,  G06F11/20

CPC classification number: G06F11/1451 ,  G06F11/1435 ,  G06F11/1448 ,  G06F11/2058 ,  G06F17/30073 ,  G06F17/30194 ,  G06F2201/84

Abstract: In a data recovery method, there are a server and a plurality of storage devices each storing a copy of a data block. The server divides each copy of the data block into N segments corresponding to a sequence of N partitions. And then, the server constructs a plurality of different trial data blocks each including N segments corresponding to the sequence of N partitions. After that, the server calculates a check code for each trial data block, and continues to identify a trial data block having a check code identical to a pre-stored standard check code of the data block. At last, the server replaces at least one of the copies of the data block with the identified trial data block having the check code identical to the pre-stored standard check code.

Abstract translation: 在数据恢复方法中，存在服务器和多个存储装置，每个存储装置存储数据块的副本。 服务器将数据块的每个副本分成与N个分区序列相对应的N个段。 然后，服务器构建多个不同的试验数据块，每个试验数据块包括对应于N个分区的序列的N个段。 之后，服务器计算每个试验数据块的校验码，并且继续识别具有与数据块的预先存储的标准校验码相同的校验码的试验数据块。 最后，服务器用具有与预先存储的标准校验码相同的校验码的所识别的试验数据块替换数据块的副本中的至少一个。