Logical volumes (LVs) point to a set of specific PPs; a single LV can point to up to three PPs for mirroring through the logical partitions (LPs) mapping.

逻辑卷(LV)指向一组特定的PP；一个LV最多可以指向三个PP，从而支持通过逻辑分区(LP)映射进行镜像。

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Create another module to declare a set of mapping attributes for the new elements that point to the generic element types that they specialize.

创建另外一个模块，声明新元素的一组映射属性指向它们专门化的类属元素类型。

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Create another module to declare a set of mapping attributes for the new elements that point to the generic element types that they specialize.

创建另外一个模块，声明新元素的一组映射属性指向它们专门化的类属元素类型。

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