US 12,229,426 B2
Capacity expansion method and system for a storage cluster, and related device
Runyu Sun, Shandong (CN); and Xiangrui Meng, Shandong (CN)
Assigned to INSPUR SUZHOU INTELLIGENT TECHNOLOGY CO., LTD., Jiangsu (CN)
Appl. No. 18/029,703
Filed by INSPUR SUZHOU INTELLIGENT TECHNOLOGY CO., LTD., Jiangsu (CN)
PCT Filed Sep. 28, 2021, PCT No. PCT/CN2021/121224
§ 371(c)(1), (2) Date Mar. 31, 2023,
PCT Pub. No. WO2022/105441, PCT Pub. Date May 27, 2022.
Claims priority of application No. 202011311240.5 (CN), filed on Nov. 20, 2020.
Prior Publication US 2023/0384959 A1, Nov. 30, 2023
Int. Cl. G06F 3/06 (2006.01)
CPC G06F 3/0644 (2013.01) [G06F 3/0604 (2013.01); G06F 3/0673 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A capacity expansion method for a storage cluster, comprising:
receiving an expansion instruction and determining a new expansion node corresponding to the expansion instruction;
traversing all placement groups to determine reference counts of Object-based Storage Devices (OSDs) corresponding to each of the placement groups, wherein the reference count of each OSD is the same as the number of placement groups stored thereon;
setting the OSD with the largest reference count associated with each placement group as an OSD to be determined;
replacing the OSD to be determined in each of the placement groups by using the new expansion node.