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1. 发明申请

WO2018029212A1 REGENERATING LOCALLY REPAIRABLE CODES FOR DISTRIBUTED STORAGE SYSTEMS 审中-公开
标题翻译：为分布式存储系统重新设计本地可修复的代码
公开(公告)号：WO2018029212A1
公开(公告)日：2018-02-15
申请号：PCT/EP2017/070110
申请日：2017-08-08
申请人： MEMOSCALE AS
发明人： SIMONSEN, Per , GLIGOROSKI, Danilo , JENSEN, Rune Erlend , KRALEVSKA, Katina
IPC分类号： H03M13/37 , H03M13/13 , H03M13/03 , G06F11/10
摘要： Disclosed herein is a method for generating local and global parity nodes for source nodes, the method comprising: generating a first set of parity nodes for source nodes by applying a systematic encoding technique to the source nodes, wherein the first set of parity nodes comprises a plurality of parity nodes and each of the parity nodes in the first set of parity nodes is a global parity node; generating, in dependence on at least one of the parity nodes in the first set, a plurality of local parity nodes; generating a second set of parity nodes for the source nodes, wherein the second set of parity nodes comprises said plurality of local parity nodes and all of the parity nodes in the first set except for said at least one of the parity nodes in the first set that the plurality of local parity nodes were generated in dependence on; and using the second set of parity nodes as the parity nodes of the source data. Advantageously, embodiments combine the beneficial aspects of exact regenerating systematic codes and locally repairable codes.
摘要翻译：本文公开了一种用于为源节点生成本地和全局奇偶校验节点的方法，所述方法包括：通过将系统编码技术应用于源节点来生成用于源节点的第一奇偶校验节点集合，其中，所述第一组奇偶校验节点包括多个奇偶校验节点，并且所述第一组奇偶校验节点中的每一个奇偶校验节点是全局奇偶校验节点; 根据第一组中的至少一个奇偶校验节点生成多个本地校验节点; 生成用于源节点的第二奇偶校验节点集合，其中第二奇偶校验节点集合包括所述多个本地奇偶校验节点以及除了第一集合中的所述至少一个奇偶校验节点之外的第一集合中的所有奇偶校验节点多个本地奇偶校验节点是依赖于生成的; 以及使用第二组奇偶校验节点作为源数据的奇偶校验节点。有利地，实施例结合了精确再生系统代码和本地可修复代码的有益方面。

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