Title:
METHOD AND DEVICE FOR GARBAGE COLLECTION IN STORAGE SYSTEM
Document Type and Number:
WIPO Patent Application WO/2019/062370
Kind Code:
A1
Abstract:
A method and device for garbage collection in a storage system. The method comprises: a controller copies a valid data block in a storage space corresponding to a storage address of a first container unit number into a storage space corresponding to a storage address of a second container unit number (S11); the controller generates a virtual remapping according to a container mapping (S12); the controller stores the virtual remapping into a target storage space, the virtual remapping in the target storage space being accessible to at least two hosts (S13); and the controller releases the storage space corresponding to the first container unit number (S14). After the controller stores the virtual remapping into the target storage space, it is not necessary for the at least two hosts to process the virtual remapping in turn, and the at least two hosts independently process the virtual remapping in the target storage space, so as to achieve parallel collection of the storage space corresponding to the storage address of the first container unit number. Therefore, the efficiency of garbage collection is greatly improved.
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Inventors:
BROMLEY GRAHAM (US)
ZHANG WEI (CN)
YU XIAOAN (CN)
ZHANG ZHIXIONG (CN)
MATTLY JAMES (US)
LAN WENHAI (CN)
ZHANG WEI (CN)
YU XIAOAN (CN)
ZHANG ZHIXIONG (CN)
MATTLY JAMES (US)
LAN WENHAI (CN)
Application Number:
PCT/CN2018/100738
Publication Date:
April 04, 2019
Filing Date:
August 16, 2018
Export Citation:
Assignee:
HUAWEI TECH CO LTD (CN)
International Classes:
G06F12/02
Foreign References:
| CN103744798A | 2014-04-23 | |||
| CN103365788A | 2013-10-23 | |||
| CN106484323A | 2017-03-08 | |||
| CN105389266A | 2016-03-09 | |||
| US20170031818A1 | 2017-02-02 | |||
| CN107608907A | 2018-01-19 |
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