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Method, system, and program for managing information on relationships between target volumes and source volumes when performing adding, withdrawing, and disaster recovery operations for the relationships

机译：在执行关系的添加，撤消和灾难恢复操作时，用于管理有关目标卷和源卷之间的关系的信息的方法，系统和程序

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摘要

Provided are a method, system, and program for managing a relationship between one target volume and one source volume. Information is maintained in memory on an existing relationship between at least one source volume and at least one target volume, comprising: (i) at least one element, wherein each element represents a range of sequential data units in the volume; (ii) at least one relationship entry, wherein each relationship entry represents one relationship; and (iii) at least one element pointer associating one element with one relationship entry, wherein the data units represented by the element are part of the relationship represented by the relationship entry that the pointer associates with the element. A new relationship between at least one target volume and at least one source volume is added. Further, added is a new relationship entry in the memory representing the new relationship and one new element pointer is added in the memory for each element including data units included in the new relationship to associate the element with the new relationship entry, wherein the data units represented by the element are part of the new relationship.

机译：提供一种用于管理一个目标卷和一个源卷之间的关系的方法，系统和程序。有关至少一个源卷和至少一个目标卷之间的现有关系的信息保存在内存中，包括：（i）至少一个元素，其中每个元素代表该卷中一系列顺序数据单元; （ii）至少一个关系条目，其中每个关系条目代表一个关系; （iii）至少一个将一个元素与一个关系条目关联的元素指针，其中，由该元素表示的数据单元是该指针与该元素关联的关系条目所表示的关系的一部分。在至少一个目标体积和至少一个源体积之间添加了一种新的关系。此外，在存储器中添加了表示新关系的新关系条目，并且针对每个元素在存储器中添加了一个新元素指针，其中每个元素包括新关系中包括的数据单元，以将该元素与新关系条目相关联，其中数据单元由元素表示的是新关系的一部分。

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公开/公告号US2004260870A1

专利类型
公开/公告日2004-12-23

原文格式PDF
申请/专利权人 INTERNATIONAL BUSINESS MACHINES CORPORATION;
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申请/专利号US20030463997
发明设计人 MICHAEL E. FACTOR;IFAT NURIEL;THOMAS CHARLES JARVIS;SVETLANA SHUKEVICH;WILLIAM FRANK MICKA;SHELI RAHAV;SHACHAR FIENBLIT;AMIRAM HAYARDENY;RIVKA MAYRAZ MATOSEVICH;GAIL ANDREA SPEAR;DALLT TZAFRIR;SIVAN TAL;
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申请日2003-06-17
分类号G06F12/08;
国家 US
入库时间 2022-08-21 22:22:02

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