linux shell实现使用脚本自动创建逻辑卷

create_lv.sh

#!/bin/bash

clear
echo -e "\033[32m!!!!!!警告(Warning)!!!!!!\033[0m"
echo
echo "+++++++++++++++++++++++++++++++++++++++++++++++++"
echo "脚本会将整个磁盘转换为 PV,并删除磁盘上所有数据!!!"
echo "This Script will destroy all data on the Disk"
echo "+++++++++++++++++++++++++++++++++++++++++++++++++"
echo
read -p "请问是否继续 y/n?:" sure

# 测试用户输入的是否为 y,如果不是则退出脚本
[ $sure != y ] && exit

# 提示用户输入相关参数(磁盘、卷组名称等数据),并测试用户是否输入了这些值,如果没有输入,则脚本退出
read -p "请输入磁盘名称,如/dev/vdb:" disk
[ -z $disk ] && echo "没有输入磁盘名称" && exit
read -p "请输入卷组名称:" vg_name
[ -z $vg_name ] && echo "没有输入卷组名称" && exit
read -p "请输入逻辑卷名称:" lv_name
[ -z $lv_name ] && echo "没有输入逻辑卷名称" && exit
read -p "请输入逻辑卷大小:" lv_size
[ -z $lv_size ] && echo "没有输入逻辑卷大小" && exit
# 使用命令创建逻辑卷
pvcreate $disk
vgcreate $vg_name $disk
lvcreate -L ${lv_size}M -n ${lv_name}  ${vg_name}

验证：

[root@logstash ~]# sh create_lv.sh 
!!!!!!警告(Warning)!!!!!!

+++++++++++++++++++++++++++++++++++++++++++++++++
脚本会将整个磁盘转换为 PV,并删除磁盘上所有数据!!!
This Script will destroy all data on the Disk
+++++++++++++++++++++++++++++++++++++++++++++++++

请问是否继续 y/n?:
......