磁盘分区步骤

1. parted /dev/vdb
2. (parted) mktable gpt //指定分区模式为gpt
3. (parted) mkpart primary ext4 0 3GiB
4. 警告: The resulting partition is not properly aligned for best performance.
5. 忽略/Ignore/放弃/Cancel? Ignore
6. (parted) print
7. ……
8. Number Start End Size File system Name 标志
9. 1 17.4kB 3221MB 3221MB primary
10. (parted) quit

2）命令行查看分区信息

1. [root@server0 /]# lsblk
2. NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
3. ……
4. └─vdb1 252:17 0 3G 0 part ln -s

3）查看分区设备文件

1. [root@server0 /]# ls /dev/vdb1
2. /dev/vdb1
3. vgcreate 卷组名 物理设备.. ..
4. lvcreate -L 大小 -n 逻辑卷名 卷组名

2.3 步骤

实现此案例需要按照如下步骤进行。

步骤一：创建卷组

1）新建名为systemvg的卷组

1. [root@server0 ~]# vgcreate systemvg /dev/vdb1
2. Physical volume "/dev/vdb1" successfully created
3. Volume group "systemvg" successfully created

2）确认结果

1. [root@server0 ~]# vgscan
2. Reading all physical volumes. This may take a while...
3. Found volume group "systemvg" using metadata type lvm2

步骤二：创建逻辑卷

1）新建名为vo的逻辑卷

1. [root@server0 ~]# lvcreate -L 180MiB -n vo systemvg
2. Logical volume "vo" created

2）确认结果

1. [root@server0 ~]# lvscan
2. ACTIVE '/dev/systemvg/vo' [180.00 MiB] inherit

步骤三：格式化及挂载使用

1）格式化逻辑卷/dev/systemvg/vo

1. [root@server0 ~]# mkfs.ext4 /dev/systemvg/vo
2. .. ..
3. Allocating group tables: done
4. Writing inode tables: done
5. Creating journal (4096 blocks): done
6. Writing superblocks and filesystem accounting information: done

2）挂载逻辑卷/dev/systemvg/vo

1. [root@server0 ~]# mkdir /vo                             //创建挂载点
2. [root@server0 ~]# mount /dev/systemvg/vo /vo             //挂载
3. [root@server0 ~]# df -hT /vo/                         //检查结果
4. Filesystem Type Size Used Avail Use% Mounted on
5. /dev/mapper/systemvg-vo ext4 171M 1.6M 157M 1% /vo

pvcreate /dev/sdc1

vgextend /dev/sdc1

lvextend -l +100%FREE /dev/mapper/centos-home

xfs_growfs /dev/mapper/centos-home 针对xfs

resize2fs /dev/mapper/data-yida 针对 ext2 ext3 etxt4