Step1:修改fstab文件，增加磁盘限额用户和用户组信息
# /etc/fstab
# Created by anaconda on Sat Dec 29 04:48:18 2018
#
# Accessible filesystems, by reference, are maintained under '/dev/disk'
# See man pages fstab(5), findfs(8), mount(8) and/or blkid(8) for more info
#
/dev/mapper/centos-root / xfs defaults 0 0
UUID=e500f1cf-2bcb-445f-9255-5fb9254640d8 /boot xfs defaults 0 0
/dev/sdb1 /ess ext4 defaults,usrquota,grpquota 1 2 //在磁盘/dev/sdb1上配置磁盘配额，挂载点为/ess
/dev/mapper/centos-home /home xfs defaults 0 0
/dev/mapper/centos-swap swap swap defaults 0 0
修改完成后重启系统。
Step2:执行quotacheck命令生成quota.user文件
[root@node-1 ~]# quotacheck -avgu
quotacheck: Your kernel probably supports journaled quota but you are not using it. Consider switching to journaled quota to avoid running quotacheck after an unclean shutdown.
quotacheck: Scanning /dev/sdb1 [/ess] done
quotacheck: Cannot stat old user quota file /ess/aquota.user: No such file or directory. Usage will not be subtracted.
quotacheck: Cannot stat old group quota file /ess/aquota.group: No such file or directory. Usage will not be subtracted.
quotacheck: Cannot stat old user quota file /ess/aquota.user: No such file or directory. Usage will not be subtracted.
quotacheck: Cannot stat old group quota file /ess/aquota.group: No such file or directory. Usage will not be subtracted.
quotacheck: Checked 3 directories and 0 files
quotacheck: Old file not found.
quotacheck: Old file not found.
[root@node-1 ~]#
Step3:创建用户组ess，创建用户tom并且加入该组
[root@node-1 ~]# groupadd ess
[root@node-1 ~]# useradd tom -g ess
[root@node-1 ~]# passwd tom
Changing password for user tom.
New password:
Retype new password:
passwd: all authentication tokens updated successfully
Step4:使用edquota命令为用户tom设置配额
[root@node-1 ~]# edquota -u tom
Disk quotas for user tom (uid 1001):
Filesystem blocks soft hard inodes soft hard
/dev/sdb1 0 102400 150000 0 0 0 0 //设置软限额为10G硬限额为15G
Step5:启动磁盘配额
[root@node-1 ~]# quotaon -avgu
/dev/sdb1 [/ess]: group quotas turned on
/dev/sdb1 [/ess]: user quotas turned on
Step6:使用quota查看配额使用情况
[root@node-1 ess]# quota tom
Disk quotas for user tom (uid 1001):
Filesystem blocks quota limit grace files quota limit grace
/dev/sdb1 150000* 102400 150000 6days 24 0 0
[root@node-1 ess]#