安利：华为鲲鹏920云主机磁盘扩容脚本
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 ~]#
博主创作辛苦！
这是一个尊重知识的时代！
白嫖的老伙计们，记得打赏支持一下！（博主穷的叮当响了，饭都干不上了）
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
博主创作不易！
请尊重原创！
白嫖虽好，请勿抄袭！抄袭者将万劫不复！诸事不顺！（开个玩笑哈！）
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 ~]#