云主机一键挂载数据盘脚本

背景

申请的公有云或者私有云主机，主机存储磁盘往往没有格式化，也没有被挂载。

申请下来后，需要手动进行格式化和挂载，比较麻烦，本文提供一键磁盘挂载程序。

实现

Feature

特性	说明
挂载数据盘数量	当前只能挂载一个. 可执行多次，每次挂载一个
挂载点检查	若挂载点已被挂载，则退出
支持场景	未分区磁盘，自动分区并挂载 不支持：磁盘扩容、挂多个数据盘场景
未分区磁盘检查	若所有磁盘都已分区、挂载，则退出
格式化格式	EXT4
默认挂载点	/app

脚本

将如下脚本保存到

/tmp/onekey_auto_mount_disk.sh

#!/bin/bash
#
# 自动挂载磁盘到指定路径
# auto mount disk to specify mount point
# usage: sh onekey_auto_mount_disk.sh app
#

# 挂载点
MOUNT_POINT=$1
DEFAULT_MOUNT_POINT="app"
if [ x"${MOUNT_POINT}" == "x" ]; then
   MOUNT_POINT=${DEFAULT_MOUNT_POINT}
fi
setup_path=/${MOUNT_POINT}
setup_disk_name=${MOUNT_POINT}

#检测磁盘数量
sysDisk=$(cat /proc/partitions | grep -v name | grep -v ram | awk '{print $4}' |
  grep -v '^$' | grep -v '[0-9]$' | grep -v 'vda' | grep -v 'xvda' |
  grep -v 'sda' | grep -e 'vd' -e 'sd' -e 'xvd')
if [ "${sysDisk}" == "" ]; then
  echo -e "此服务器只有一块磁盘,无法挂载"
  echo -e "Bye-bye"
  exit
fi
#检测$setup_path目录是否已挂载磁盘
mountDisk=$(df -h | awk '{print $6}' | grep $setup_disk_name)
if [ "${mountDisk}" != "" ]; then
  echo -e "$setup_path目录已被挂载,不执行任何操作"
  echo -e "Bye-bye"
  exit
fi

#检测是否有windows分区
winDisk=$(fdisk -l | grep "NTFS\|FAT32")
if [ "${winDisk}" != "" ]; then
  echo "危险 数据盘为Windows分区，为了你的数据安全，请手动挂载，本脚本不执行任何操作。"
  exit
fi

# 数据盘自动分区

disk_partition() {
  for i in $(cat /proc/partitions | grep -v name | grep -v ram | awk '{print $4}' |
    grep -v '^$' | grep -v '[0-9]$' | grep -v 'vda' | grep -v 'xvda' | grep -v 'sda' |
    grep -e 'vd' -e 'sd' -e 'xvd'); do
    #判断指定目录是否被挂载
    isR=$(df -P | grep $setup_path)
    if [ "$isR" != "" ]; then
      echo "Error: The $setup_path directory has been mounted."
      return
    fi
    isM=$(df -P | grep '/dev/${i}1')
    if [ "$isM" != "" ]; then
      echo "/dev/${i}1 has been mounted."
      continue
    fi
    #判断是否存在未分区磁盘
    isP=$(fdisk -l /dev/$i | grep -v 'bytes' | grep "$i[1-9]*")
    if [ "$isP" = "" ]; then
      #开始分区
      fdisk -S 56 /dev/$i <<EOF
n
p
1


wq
EOF

      sleep 5
      #检查是否分区成功
      checkP=$(fdisk -l /dev/$i | grep "/dev/${i}1")
      if [ "$checkP" != "" ]; then
        #格式化分区
        mkfs.ext4 /dev/${i}1
        mkdir $setup_path
        #挂载分区
        sed -i "/\/dev\/${i}1/d" /etc/fstab
        echo "/dev/${i}1    $setup_path    ext4    defaults    0 0" >>/etc/fstab
        mount -a
        df -h
      fi
    else
      #判断是否存在Windows磁盘分区
      isN=$(fdisk -l /dev/$i | grep -v 'bytes' | grep -v "NTFS" | grep -v "FAT32")
      if [ "$isN" = "" ]; then
        echo 'Warning: The Windows partition was detected. For your data security, Mount manually.'
        return
      fi

      #挂载已有分区
      checkR=$(df -P | grep "/dev/$i")
      if [ "$checkR" = "" ]; then
        mkdir $setup_path
        sed -i "/\/dev\/${i}1/d" /etc/fstab
        echo "/dev/${i}1    $setup_path    ext4    defaults    0 0" >>/etc/fstab
        mount -a
        df -h
      fi

      #清理不可写分区
      echo 'True' >$setup_path/checkD.pl
      if [ ! -f $setup_path/checkD.pl ]; then
        sed -i "/\/dev\/${i}1/d" /etc/fstab
        mount -a
        df -h
      else
        rm -f $setup_path/checkD.pl
      fi
    fi
  done
}
## 默认不提示，自动挂载，有需要可以加一个提示
while [ "$go" != 'y' ] && [ "$go" != 'n' ]; do
  read -p "Do you want to try to mount the data disk to the $setup_path directory?(y/n): " go
done

if [ "$go" = 'n' ]; then
  echo -e "Bye-bye"
  exit
fi

disk_partition
echo -e ""
echo -e "Done"
echo -e "挂载成功"

执行

自定义挂载路径，比如如下例子，将磁盘挂载到 /data目录

sh /tmp/onekey_auto_mount_disk.sh data

效果

执行过程

挂载成功