对于文件系统，调整逻辑卷大小比调整分区大小要简单一些，因为LVM以分区的形式避免了预留相邻编号扇区集合。
For file systems, resizing logical volumes can be simpler than resizing partitions because LVM obviates the need to set aside contiguous sets of numbered sectors in the form of partitions.
该图只对单个备选行动过程的逻辑建模，这可以通过序列图左侧所列的步骤编号得知。
This diagram models only the logic of a single alternate course, as you can tell by the numbering of the steps on the left side of the diagram.
注意主分区是从1到4进行编号的，编号系统可能有间隙，但是逻辑分区是从5开始编号的，不存在间隙。
Note that primary partitions are numbered from 1 to 4, and the numbering system may contain gaps, whereas logical partitions are numbered from 5 up and may not contain gaps.
物理磁盘的表示，比如逻辑单元编号(LUN)。
Representations of physical disks, such as logical unit Numbers (LUNs).
Number列显示逻辑日志的编号。
The Number column indicates the number of logical logs sequentially.
因此，如果您添加一个主分区，分区编号也有可能不会改变，但是如果您要添加一个逻辑分区，您所有的其他逻辑分区变化都会改变。
Thus, if you add a primary partition, it's possible that no partition Numbers will change; but if you add a logical partition, all your other logical partitions' Numbers may change.
窗口的大小可由各行的实际编号或由时间等逻辑间隔确定。
Window sizes can be based on either a physical number of rows or a logical interval such as time.
逻辑组编号LGN ？
逻辑通道组编号LCGN ？
逻辑通道组编号LCGN ？
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