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1. 发明申请

WO2018075042A1 DATA STORAGE SYSTEM, PROCESS, AND COMPUTER PROGRAM FOR DE-DUPLICATION OF DISTRIBUTED DATA IN A SCALABLE CLUSTER SYSTEM 审中-公开
标题翻译：数据存储系统，过程和计算机程序，用于在可伸缩群集系统中去除分布式数据
公开(公告)号：WO2018075042A1
公开(公告)日：2018-04-26
申请号：PCT/US2016/057849
申请日：2016-10-20
申请人： HITACHI, LTD.
发明人： HAYASAKA, Mitsuo , ASTON, Christopher, James , SMITH, Jonathan , DANIEL, Picken , GIBBS, James , CROSLAND, Simon , MATSUI, Yuko
IPC分类号： G06F17/00 , G06F17/30
摘要： The present disclosure relates to data de-duplication in distributed storage of data objects in a cluster system, in which plural data objects are distributed across a group of node apparatuses and stored in units of data blocks. Specifically, I/O access to the plural data objects is managed based on metadata structures being respectively provided for each data object, each metadata structure including a root metadata node and one or more direct metadata nodes, and optionally including one or more indirect metadata nodes; and a metadata object is stored for managing de-duplicated data blocks based on a metadata structure of the metadata object including a root metadata node and one or more direct metadata nodes, and optionally including one or more metadata indirect nodes; wherein at least one direct metadata node of the metadata structure of the metadata object includes a block reference pointing to a de-duplicated data block being associated with two or more data objects. Preferably, each of the metadata structures of the two or more data objects being associated with the de-duplicated data block includes a respective direct metadata node including an object reference to the metadata structure of the metadata object.
摘要翻译：本公开涉及在集群系统中的数据对象的分布式存储中的数据重复删除，其中多个数据对象分布在一组节点装置上并以数据块为单位存储。具体地，基于分别为每个数据对象提供的元数据结构来管理对多个数据对象的I / O访问，每个元数据结构包括根元数据节点和一个或多个直接元数据节点，并且可选地包括一个或多个间接元数据节点 ; 并且存储用于基于包括根元数据节点和一个或多个直接元数据节点的元数据对象的元数据结构来管理去重复数据块的元数据对象，并且可选地包括一个或多个元数据间接节点; 其中所述元数据对象的元数据结构的至少一个直接元数据节点包括指向与两个或更多数据对象相关联的去重复数据块的块引用。优选地，两个或更多个数据对象的与重复数据块相关联的每个元数据结构包括相应的直接元数据节点，其包括对元数据对象的元数据结构的对象引用。

2. 发明申请

WO2018075041A1 DATA STORAGE SYSTEM AND PROCESS FOR PROVIDING DISTRIBUTED STORAGE IN A SCALABLE CLUSTER SYSTEM AND COMPUTER PROGRAM FOR SUCH DATA STORAGE SYSTEM 审中-公开
标题翻译：用于在可伸缩群集系统中提供分布式存储的数据存储系统和过程以及用于这种数据存储系统的计算机程序
公开(公告)号：WO2018075041A1
公开(公告)日：2018-04-26
申请号：PCT/US2016/057845
申请日：2016-10-20
申请人： HITACHI, LTD.
发明人： MATSUI, Yuko , HAYASAKA, Mitsuo , ASTON, Christopher, James , SMITH, Jonathan , GIBBS, James , PICKEN, Daniel , CROSLAND, Simon , LE, Hieu, Hanh
IPC分类号： G06F3/06 , G06F15/16 , G06F15/173 , H04L12/24 , H04L12/46
CPC分类号： G06F16/2272 , G06F3/0611 , G06F3/064 , G06F3/067 , G06F3/0689 , G06F15/16 , G06F15/173 , G06F16/2246 , H04L12/46 , H04L12/4625
摘要： The present disclosure relates to distributed storage of data objects in a cluster system, in which a data object is distributed across a group of node apparatuses in units of data blocks; and I/O access to the data object is managed based on metadata structures including a metadata structure being associated with a parent object of the data object and plural metadata structures being respectively associated with one of a plurality of child objects of the data object. For each child object, the metadata structure of the respective child object is stored to one of the node apparatuses of the group of node apparatuses for managing locations of data blocks of the data object and includes a root metadata node and one or more direct metadata nodes, optionally further including one or more indirect metadata nodes; and the metadata structure of the parent object is distributed across the plural node apparatuses of the group of node apparatuses for managing locations of child objects of the data object and includes, on each node apparatus of the group of node apparatuses, a root metadata node and one or more direct metadata nodes, optionally further including one or more indirect metadata nodes.
摘要翻译：本公开涉及数据对象在集群系统中的分布式存储，其中数据对象以数据块为单位分布在一组节点装置上; 并且基于包括与数据对象的父对象相关联的元数据结构的元数据结构以及分别与数据对象的多个子对象之一相关联的多个元数据结构来管理对数据对象的I / O访问。对于每个子对象，相应子对象的元数据结构被存储到用于管理数据对象的数据块的位置的节点装置组的节点装置之一，并且包括根元数据节点和一个或多个直接元数据节点，可选地还包括一个或多个间接元数据节点; 并且父对象的元数据结构分布在用于管理数据对象的子对象的位置的节点装置组的多个节点装置上，并且在该组节点装置的每个节点装置上包括根元数据节点和一个或多个直接元数据节点，可选地还包括一个或多个间接元数据节点。

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