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vgconvert
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===
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转换卷组元数据格式
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## 补充说明
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**vgconvert命令** 用于转换指定LVM卷组的元数据格式，通常将“LVM1”格式的卷组转换为“LVM2”格式。转换卷组元数据前必须保证卷组处于非活动状态，否则无法完成转换操作。
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### 语法
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```
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vgconvert(选项)(参数)
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```
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### 选项
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```
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-M：要转换的卷组格式。
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```
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### 参数
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卷组：指定要转换格式的卷组。
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### 实例
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转换卷组元数据格式前，使用vgchange命令将卷组设置为非活动状态。在命令行中输入下面的命令：
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```
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[root@localhost lvm]# vgchange -an vg1000 #设置卷组状态为非活动状态
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0 logical volume(s) in volume group "vg1000" now active
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```
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使用vgconvert命令将卷组"vg1000"从"LVM1"格式转换为"LVM2"格式。在命令行中输入下面的命令：
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```
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[root@localhost lvm]# vgconvert -M2 vg1000 #转换卷组为"LVM2"格式
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Volume group vg1000 successfully converted
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```
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使用vgchange命令将卷组设置为活动状态。在命令行中输入下面的命令：
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```
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[root@localhost lvm]# vgchange -ay vg1000 #设置卷组状态为活动状态
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0 logical volume(s) in volume group "vg1000" now active
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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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