电子科技大学学报2025，Vol.54Issue(4)：521-531,11.DOI:10.12178/1001-0548.2024150
具有较低修复带宽开销的局部Piggybacking码构造
Construction of locally Piggybacking codes with lower repair bandwidth overhead
摘要
Abstract
The current research on Piggybacking codes mainly focuses on the fast repair of single systematic nodes,the repair bandwidth rates of the failed parity nodes remain higher,and fast repair algorithm has not been proposed for multi-node fault repair.For this reason,this paper proposes a construction scheme of locally Piggybacking codes.On the basis of Piggybacking framework,two local parity sub-strips are added,the data blocks are placed in a staggered manner,and the systematic nodes are grouped in sequential Piggybacking,hereby reducing the repair bandwidth overhead and repair degree of the failed nodes.Performance analysis shows that the locally Piggybacking codes constructed in this paper have prominently reduced the repair bandwidth rate of both the systematic nodes and parity nodes.Moreover,compared with existing Piggybacking codes,the performance of the repair degree also has a significant improvement.关键词
分布式存储系统/Piggybacking码/修复带宽开销/修复度Key words
distributed storage system/Piggybacking codes/repair bandwidth overhead/repair degree分类
信息技术与安全科学引用本文复制引用
张洁薇,王静,杨红志,李瞳,毛祖权,刘向阳..具有较低修复带宽开销的局部Piggybacking码构造[J].电子科技大学学报,2025,54(4):521-531,11.基金项目
国家自然科学基金(62001059) （62001059）
陕西省重点研发计划项目(2024GX-YBXM-068) （2024GX-YBXM-068）
