华为鲲鹏920云主机磁盘扩容脚本

Posted 闭关苦炼内功

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需求:有10台华为鲲鹏920云主机都需要加挂磁盘,所以非常需要脚本自动化进行操作

之前博主写过关于物理硬盘、云硬盘等磁盘扩容的文章(如下:)

PCL(鹏城实验室开发者云)虚机云硬盘扩容教程【图文】

linux服务器物理磁盘扩容

云主机磁盘centos7根目录扩容

注意:本次安利的脚本跟以上文章有所不同,希望大家能够融会贯通!


  • 未加挂磁盘前
    [root@localhost ~]# lsblk
    NAME   MAJ:MIN RM  SIZE RO TYPE MOUNTPOINT
    sdd      8:48   0  500G  0 disk
    sdb      8:16   0  500G  0 disk
    sdc      8:32   0  500G  0 disk
    sda      8:0    0  500G  0 disk
    ├─sda2   8:2    0 79.8G  0 part /
    └─sda1   8:1    0  200M  0 part /boot/efi
    [root@localhost ~]# df -hT
    Filesystem     Type      Size  Used Avail Use% Mounted on
    devtmpfs       devtmpfs  8.0G     0  8.0G   0% /dev
    tmpfs          tmpfs     8.0G     0  8.0G   0% /dev/shm
    tmpfs          tmpfs     8.0G   86M  7.9G   2% /run
    tmpfs          tmpfs     8.0G     0  8.0G   0% /sys/fs/cgroup
    /dev/sda2      ext4       79G  5.6G   69G   8% /
    /dev/sda1      vfat      200M  4.5M  196M   3% /boot/efi
    tmpfs          tmpfs     1.6G     0  1.6G   0% /run/user/0
    [root@localhost ~]#
    

  • 加挂磁盘后
    [root@hadoop140 ~]# df -hT
    Filesystem              Type      Size  Used Avail Use% Mounted on
    devtmpfs                devtmpfs  8.0G     0  8.0G   0% /dev
    tmpfs                   tmpfs     8.0G     0  8.0G   0% /dev/shm
    tmpfs                   tmpfs     8.0G   94M  7.9G   2% /run
    tmpfs                   tmpfs     8.0G     0  8.0G   0% /sys/fs/cgroup
    /dev/sda2               ext4       79G  5.9G   69G   8% /
    /dev/sda1               vfat      200M  4.5M  196M   3% /boot/efi
    tmpfs                   tmpfs     1.6G     0  1.6G   0% /run/user/0
    /dev/mapper/centos-root ext4      1.5T   24K  1.4T   1% /datafs
    [root@hadoop140 ~]#
    [root@hadoop140 ~]# lsblk
    NAME            MAJ:MIN RM  SIZE RO TYPE MOUNTPOINT
    sdd               8:48   0  500G  0 disk
    └─sdd1            8:49   0  500G  0 part
      └─centos-root 253:0    0  1.5T  0 lvm  /datafs
    sdb               8:16   0  500G  0 disk
    └─sdb1            8:17   0  500G  0 part
      └─centos-root 253:0    0  1.5T  0 lvm  /datafs
    sdc               8:32   0  500G  0 disk
    └─sdc1            8:33   0  500G  0 part
      └─centos-root 253:0    0  1.5T  0 lvm  /datafs
    sda               8:0    0  500G  0 disk
    ├─sda2            8:2    0 79.8G  0 part /
    └─sda1            8:1    0  200M  0 part /boot/efi
    [root@hadoop140 ~]#
    

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以下是脚本详细内容!

首先,编写扩容脚本
vim extend-disk.sh

#!/bin/bash
# blog:闭关苦炼内功(https://blog.csdn.net/frdevolcqzyxynjds) 2021-05-22
echo '--------第1块硬盘:sdb--------' && \\
fdisk -u /dev/sdb && \\
echo '--------Physical volume:sdb1--------' && \\
pvcreate /dev/sdb1 && \\
echo '--------Volume group centos--------'
vgcreate centos /dev/sdb1 && \\
echo '' && \\
echo '--------第2块硬盘:sdc--------' && \\
fdisk -u /dev/sdc && \\
echo '--------Physical volume:sdc1--------' && \\
pvcreate /dev/sdc1 && \\
echo '--------Volume group centos--------'
vgextend centos /dev/sdc1 && \\
echo '' && \\
echo '--------第3块硬盘:sdd--------' && \\
fdisk -u /dev/sdd && \\
echo '--------Physical volume:sdd1--------' && \\
pvcreate /dev/sdd1 && \\
echo '--------Volume group centos--------'
vgextend centos /dev/sdd1 && \\
echo '' && \\
echo '--------Logical volume root--------' && \\
lvcreate -l 356 -n root centos && \\
echo '' && \\
echo '--------ext4--------' && \\
mkfs -t ext4 /dev/centos/root && \\
echo '' && \\
echo '--------Logical volume centos/root--------' && \\
lvextend -l +100%FREE /dev/centos/root && \\
echo '' && \\
echo '--------同步文件系统--------' && \\
resize2fs /dev/centos/root && \\
echo '' && \\
echo '--------挂载到/datafs/--------' && \\
mount /dev/centos/root /datafs/ && \\
echo '' && \\
echo '--------查看文件系统--------' && \\
df -hT && \\
echo '' && \\
echo '扩容完毕!'

然后,给脚本授予可执行权限
chmod +x extend-disk.sh

最后,执行脚本
./extend-disk.sh

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感谢您的支持!


最后

本不打算贴出详细记录的,博主想想还是贴出来吧,不然又要有粉丝不会搞了

如有不明白之处,欢迎各位看官私信本博主!

[root@localhost ~]# vim extend-disk.sh
[root@localhost ~]# chmod +x extend-disk.sh
[root@localhost ~]# ./extend-disk.sh
--------第1块硬盘:sdb--------
Welcome to fdisk (util-linux 2.23.2).

Changes will remain in memory only, until you decide to write them.
Be careful before using the write command.

Device does not contain a recognized partition table
Building a new DOS disklabel with disk identifier 0x64eaa985.

Command (m for help): n
Partition type:
   p   primary (0 primary, 0 extended, 4 free)
   e   extended
Select (default p):
Using default response p
Partition number (1-4, default 1):
First sector (2048-1048575999, default 2048):
Using default value 2048
Last sector, +sectors or +size{K,M,G} (2048-1048575999, default 1048575999):
Using default value 1048575999
Partition 1 of type Linux and of size 500 GiB is set

Command (m for help): w
The partition table has been altered!

Calling ioctl() to re-read partition table.
Syncing disks.
--------Physical volume:sdb1--------
  Physical volume "/dev/sdb1" successfully created.
--------Volume group centos--------
  Volume group "centos" successfully created

--------第2块硬盘:sdc--------
Welcome to fdisk (util-linux 2.23.2).

Changes will remain in memory only, until you decide to write them.
Be careful before using the write command.

Device does not contain a recognized partition table
Building a new DOS disklabel with disk identifier 0x696ccf4b.

Command (m for help): n
Partition type:
   p   primary (0 primary, 0 extended, 4 free)
   e   extended
Select (default p):
Using default response p
Partition number (1-4, default 1):
First sector (2048-1048575999, default 2048):
Using default value 2048
Last sector, +sectors or +size{K,M,G} (2048-1048575999, default 1048575999):
Using default value 1048575999
Partition 1 of type Linux and of size 500 GiB is set

Command (m for help): w
The partition table has been altered!

Calling ioctl() to re-read partition table.
Syncing disks.
--------Physical volume:sdc1--------
  Physical volume "/dev/sdc1" successfully created.
--------Volume group centos--------
  Volume group "centos" successfully extended

--------第3块硬盘:sdd--------
Welcome to fdisk (util-linux 2.23.2).

Changes will remain in memory only, until you decide to write them.
Be careful before using the write command.

Device does not contain a recognized partition table
Building a new DOS disklabel with disk identifier 0xda8362fd.

Command (m for help): n
Partition type:
   p   primary (0 primary, 0 extended, 4 free)
   e   extended
Select (default p):
Using default response p
Partition number (1-4, default 1):
First sector (2048-1048575999, default 2048):
Using default value 2048
Last sector, +sectors or +size{K,M,G} (2048-1048575999, default 1048575999):
Using default value 1048575999
Partition 1 of type Linux and of size 500 GiB is set

Command (m for help): w
The partition table has been altered!

Calling ioctl() to re-read partition table.
Syncing disks.
--------Physical volume:sdd1--------
  Physical volume "/dev/sdd1" successfully created.
--------Volume group centos--------
  Volume group "centos" successfully extended

--------Logical volume root--------
  Logical volume "root" created.

--------ext4--------
mke2fs 1.42.9 (28-Dec-2013)
Discarding device blocks: done
Filesystem label=
OS type: Linux
Block size=4096 (log=2)
Fragment size=4096 (log=2)
Stride=0 blocks, Stripe width=0 blocks
91200 inodes, 364544 blocks
18227 blocks (5.00%) reserved for the super user
First data block=0
Maximum filesystem blocks=373293056
12 block groups
32768 blocks per group, 32768 fragments per group
7600 inodes per group
Superblock backups stored on blocks:
        32768, 98304, 163840, 229376, 294912

Allocating group tables: done
Writing inode tables: done
Creating journal (8192 blocks): done
Writing superblocks and filesystem accounting information: done


--------Logical volume centos/root--------
  Size of logical volume centos/root changed from 1.39 GiB (356 extents) to 1.46 TiB (383997 extents).
  Logical volume centos/root successfully resized.

--------同步文件系统--------
resize2fs 1.42.9 (28-Dec-2013)
Resizing the filesystem on /dev/centos/root to 393212928 (4k) blocks.
The filesystem on /dev/centos/root is now 393212928 blocks long.


--------挂载到/datafs/--------

--------查看文件系统--------
Filesystem              Type      Size  Used Avail Use% Mounted on
devtmpfs                devtmpfs  8.0G     0  8.0G   0% /dev
tmpfs                   tmpfs     8.0G     0  8.0G   0% /dev/shm
tmpfs                   tmpfs     8.0G   35M  8.0G   1% /run
tmpfs                   tmpfs     8.0G     0  8.0G   0% /sys/fs/cgroup
/dev/sda2               ext4       79G  4.7G   70G   7% /
/dev/sda1               vfat      200M  4.5M  196M   3% /boot/efi
tmpfs                   tmpfs     1.6G     0  1.6G   0% /run/user/0
/dev/mapper/centos-root ext4      1.5T   24K  1.4T   1% /datafs

扩容完毕!
[root@localhost ~]#

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