公开(公告)号：WO2017062494A1

公开(公告)日：2017-04-13

申请号：PCT/US2016/055553

申请日：2016-10-05

Applicant: NETAPP, INC.

Inventor： JESS, Martin ,  MOORE, Joseph ,  HUANG, Ziling

IPC: G06F11/08 ,  G06F11/16 ,  G06F11/20 ,  G06F15/16 ,  G06F15/177

CPC classification number: G06F11/2069 ,  G06F11/1092 ,  G06F2201/805 ,  G06F2201/85

Abstract: A system, method, and machine-readable storage medium for recovering data in a distributed storage system are provided. In some embodiments, the method includes identifying a failing storage device of a first storage node having an inaccessible data segment. When it is determined that the inaccessible data segment cannot be recovered using a first data protection scheme, a first chunk of data associated with the inaccessible data segment is identified and a group associated with the first chunk of data is identified. A second chunk of data associated with the group is selectively retrieved from a second storage node such that data associated with an accessible data segment of the first storage node is not retrieved. The inaccessible data segment is recovered by recovering the first chunk of data using a second data protection scheme and the second chunk of data.

Abstract translation: 提供了一种用于在分布式存储系统中恢复数据的系统，方法和机器可读存储介质。 在一些实施例中，该方法包括识别具有不可访问数据段的第一存储节点的故障存储设备。 当确定使用第一数据保护方案不能恢复不可访问的数据段时，识别与不可访问的数据段相关联的第一数据块，并且识别与第一块数据相关联的组。 从第二存储节点选择性地检索与组相关联的第二数据块，使得与第一存储节点的可访问数据段相关联的数据不被检索。 通过使用第二数据保护方案和第二数据块来恢复第一数据块来恢复不可访问的数据段。

公开(公告)号：EP3360045A1

公开(公告)日：2018-08-15

申请号：EP16854240.5

申请日：2016-10-05

Applicant: NetApp, Inc.

Inventor： JESS, Martin ,  MOORE, Joseph ,  HUANG, Ziling

IPC: G06F11/08 ,  G06F11/16 ,  G06F11/20 ,  G06F15/16 ,  G06F15/177

CPC classification number: G06F11/2069 ,  G06F11/1092 ,  G06F2201/805 ,  G06F2201/85

Abstract: A system, method, and machine-readable storage medium for recovering data in a distributed storage system are provided. In some embodiments, the method includes identifying a failing storage device of a first storage node having an inaccessible data segment. When it is determined that the inaccessible data segment cannot be recovered using a first data protection scheme, a first chunk of data associated with the inaccessible data segment is identified and a group associated with the first chunk of data is identified. A second chunk of data associated with the group is selectively retrieved from a second storage node such that data associated with an accessible data segment of the first storage node is not retrieved. The inaccessible data segment is recovered by recovering the first chunk of data using a second data protection scheme and the second chunk of data.