The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 21, 2017
Filed:
May. 23, 2017
Huawei Technologies Co.,ltd., Shenzhen, Guangdong, CN;
Daohui Wang, Shenzhen, CN;
Feng Zhang, Shenzhen, CN;
Wei Fan, Xi'an, CN;
Zhile Zhang, Shenzhen, CN;
Yongqiang Zeng, Shenzhen, CN;
HUAWEI TECHNOLOGIES CO., LTD., Shenzhen, CN;
Abstract
A data recovery method to improve storage consistency of a distributed storage system includes: receiving a recovery message from a storage node after a fault recovery of the faulty storage node; obtaining N lost erasure coding (EC) blocks of the faulty storage node through computation according to EC blocks stored by non-faulty storage nodes; sequentially sending N lost EC blocks to the faulty storage node for storage. In the process of sequentially sending the N lost EC blocks to the faulty storage node, when it is determined that for a first EC block that is to be stored by the faulty storage node, a second EC block having a same key value as the first EC block exists in the lost EC blocks, after the faulty storage node stores the second EC block, the first EC block is sent to the faulty storage node to store.