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ESTABLISHING A POINT-IN-TIME COPY RELATIONSHIP BETWEEN SOURCE LOGICAL ADDRESSES AND TARGET LOGICAL ADDRESSES

机译:建立源逻辑地址和目标逻辑地址之间的即时复制关系

摘要

Provided are a computer program product, system, and method for establishing a point-in-time copy relationship between source logical addresses and target logical addresses. A point-in-time (PiT) copy establish command specifies a source set comprising a subset of source logical addresses in at least one storage and a target set comprising a subset of target logical addresses in the at least one storage. The source set of source logical addresses are copied to the target set of target logical addresses. The source logical addresses map to source tracks and wherein the target logical addresses map to target tracks. Copy information is generated indicating whether the source logical addresses in the source set have been copied to the target set. Complete is returned to the PiT copy establish command after generating the copy information and before copying all the source logical addresses to the target logical addresses.
机译:提供了一种用于在源逻辑地址和目标逻辑地址之间建立时间点复制关系的计算机程序产品,系统和方法。时间点(PiT)复制建立命令指定了一个源集合,该源集合包括至少一个存储器中的源逻辑地址的子集,而一个目标集包括至少一个存储器中的目标逻辑地址的子集。源逻辑地址的源集被复制到目标逻辑地址的目标集。源逻辑地址映射到源轨道,并且其中目标逻辑地址映射到目标轨道。生成复制信息,该复制信息指示源集中的源逻辑地址是否已复制到目标集中。在生成复制信息之后并且在将所有源逻辑地址复制到目标逻辑地址之前,将完成返回到PiT复制建立命令。

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