公开(公告)号：US20170220427A1

公开(公告)日：2017-08-03

申请号：US15491473

申请日：2017-04-19

Applicant: Huawei Technologies Co., Ltd.

Inventor： Gaoding Fu ,  Yong Jiang ,  Zian Mu

IPC: G06F11/14 ,  G06F17/30 ,  G06F3/06

CPC classification number: G06F11/1469 ,  G06F3/06 ,  G06F3/0604 ,  G06F3/064 ,  G06F3/0659 ,  G06F3/0683 ,  G06F11/1448 ,  G06F11/1464 ,  G06F16/128 ,  G06F2201/84

Abstract: A data recovery method includes receiving a first physical address of a data block included in a to-be-recovered file sent by a server, searching in a recovery snapshot according to the first physical address of the data block included in the to-be-recovered file, obtaining a second physical address, in a resource volume, of a modified data block in the to-be-recovered file according to a correspondence between a first physical address of the modified data block and the second physical address, in the resource volume, of the modified data block recorded in the recovery snapshot, where the recovery snapshot is a snapshot volume used to recover the to-be-recovered file, and recovering, in the source volume, the to-be-recovered file according to the second physical address, in the resource volume, of the modified data block in the to-be-recovered file.