Linux设置逻辑卷并挂载

梦里梦外; 2022-12-27 01:59 330阅读 0赞

需求：项目新增了一个磁盘，空间为2T的，需要挂载上去，用于存储录像文件

参考博客：

**目录**

一：创建VG卷组

二：创建LV逻辑卷

三:格式化逻辑卷并挂载

四：创建目录并挂载

五：设置开机挂载

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## 一：创建VG卷组 ##

扫面系统VG：vgscan

创建VG：vgcreate vg\_test /dev/sdb1

查看VG：vgdisplay

1：创建VG卷组

vgcreate vg\_test /dev/sdb

注意：此处应该是 /dev/sdb 磁盘

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzI2OTYzNDMz_size_16_color_FFFFFF_t_70 1][]

创建完成后，查看卷组，发现新创建的卷组 vg\_test，这里我们创建的1.95TB（511999个PE）,记录这个数

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzI2OTYzNDMz_size_16_color_FFFFFF_t_70 2][]

## 二：创建LV逻辑卷 ##

扫面系统LV：lvscan

创建LV：lvcreate -l 511999 -n lv\_test vg\_test（511999 是VG中PE的个数）

查看LV：lvdisplay

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzI2OTYzNDMz_size_16_color_FFFFFF_t_70 3][]

## 三:格式化逻辑卷并挂载 ##

mkfs -t ext4 /dev/vg\_test/lv\_test

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzI2OTYzNDMz_size_16_color_FFFFFF_t_70 4][]

## 四：创建目录并挂载 ##

mkdir /opt/ultrapower

挂载

mount /dev/vg\_test/lv\_test /opt/ultrapower

如果要卸载挂载

umount /dev/VG1/lv\_vg1

lvremove /dev/VG1/lv\_vg1

## 五：设置开机挂载 ##

vim /etc/fstab

/dev/mapper/vg\_test-lv\_test /opt/ultrapower ext4 defaults 1 2

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzI2OTYzNDMz_size_16_color_FFFFFF_t_70 5][]

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