4.3.7. 修改卷组参数
				There are several volume group parameters that you can change for an existing volume group with the 
vgchange command. Primarily, however, this command is used to deactivate and activate volume groups, as described in 第 4.3.8 节 “激活和失活卷组”,
			
				下面的命令将卷组 
vg00 的包含逻辑卷的最大数量改为 128。
			vgchange -l 128 /dev/vg00
vgchange -l 128 /dev/vg00
				有关 
vgchange 命令的卷组参数的论述请参考 vgchange(8) man page。