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lvextend
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===
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扩展逻辑卷空间
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## 补充说明
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**lvextend命令** 用于在线扩展逻辑卷的空间大小，而不中断应用程序对逻辑卷的访问。使用lvextend命令动态在线扩展磁盘空间，整个空间扩展过程对于应用程序来说是完全透明的。
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### 语法
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```
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lvextend(选项)(参数)
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```
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### 选项
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```
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-L：指定逻辑卷的大小，单位为“kKmMgGtT”字节；
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-l：指定逻辑卷的大小（LE数）。
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```
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### 参数
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逻辑卷：指定要扩展空间的逻辑卷。
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### 实例
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使用lvextend命令为逻辑卷`/dev/vg1000/lvol0`增加100M空间。在命令行中输入下面的命令：
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```
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[root@localhost ~]# lvextend -L +100M /dev/vg1000/lvol0 #为了解决增加100M空间
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```
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输出信息如下：
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```
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Extending logical volume lvol0 to 300.00 MB
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Logical volume lvol0 successfully resized
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```
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<!-- Linux命令行搜索引擎：https://jaywcjlove.github.io/linux-command/ -->
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