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Implementation of LVM Logical volume management and disk quotas in Linux systems

Source: Internet
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LVM (Logical Volume Manager) is a logical mechanism for managing disk partitions in a Linux system, a logical layer built on disk and partition, capable of dynamically adjusting disk capacity while keeping existing data intact, thus increasing the flexibility of disk Management. 

1. 执行命令 fdisk -l 来查看硬盘的设备名称及位置，此处添加了两块各为20G大小的硬盘

2. 执行命令 fdisk /dev/sdb 划分分区，并更改分区类型为LVM

3.  以上为硬盘sdb的设置，继续按照上步骤设置硬盘sdc

4. 将sdb1和sdc1转换成物理卷: pvcreate /dev/sdb1 dev/sdc1

5. 将两个物理卷创建为一个名为yun的卷组：vgcreate /dev/sdb1 /dev/sdc1

6. 从卷组yun中分隔空间，创建新的逻辑卷yun01，分配容量10G:lvcreate -L 10G -n yun01 yun

7. 格式化逻辑卷yun01 mkfs.ext4 /dev/yun/yun01，并创建挂载点

8. vim进入/etc/fstab设置自动挂载，用quota软件对逻辑卷yun01设置用户和组的配额：

9. 重新启动挂载，setenforce 0关闭selinux防火墙

10. 使用quotacheck -ugcv /dev/yun/yun01为yun01创建配额文件

11. 使用`edquota -u wzn`对用户wzn设置配额,参数为所示

12. 开启逻辑卷yun01的配额：quota -ugv /yun01
13. 登录wzn 用户，对这次配额进行验证，至此配额成功。

Implementation of LVM Logical volume management and disk quotas in Linux systems

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