0.文件系统支持配额:usrquota,grpquota
1.创建配额文件:quotacheck -avug 
2.启用配额:quotaon -avug
3.配置配额:edquota -u username
4.显示应用配置:quota -u usename  #该文件系统下需要有此用户的文件,不然会出错
                quota -g groupname 
5.显示总应用配置:repquota -au

 [root@szm ~]# cat /etc/fstab | grep home

/dev/mapper/vg_szm-LogVol00 /home                   ext4    defaults,usrquota,grpquota        1 2
 
[root@szm ~]# umount /home;mount -a
[root@szm ~]# mount | grep home
/dev/mapper/vg_szm-LogVol00 on /home type ext4 (rw,usrquota,grpquota)
 
 
[root@szm ~]# quotacheck -avug
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/mapper/vg_szm-LogVol00 [/home] done
quotacheck: Cannot stat old user quota file: No such file or directory
quotacheck: Cannot stat old group quota file: No such file or directory
quotacheck: Cannot stat old user quota file: No such file or directory
quotacheck: Cannot stat old group quota file: No such file or directory
quotacheck: Checked 63 directories and 54 files
quotacheck: Old file not found.
quotacheck: Old file not found.
 
 
[root@szm ~]# quotaon -avug
/dev/mapper/vg_szm-LogVol00 [/home]: group quotas turned on
/dev/mapper/vg_szm-LogVol00 [/home]: user quotas turned on
 
[root@szm ~]# edquota -u vbirduser1
[root@szm ~]#
[root@szm ~]# edquota -p vbirduser1 vbirduser2
[root@szm ~]# edquota -p vbirduser1 vbirduser{3,4,5}
[root@szm ~]# repquota -au
*** Report for user quotas on device /dev/mapper/vg_szm-LogVol00
Block grace time: 7days; Inode grace time: 7days
                        Block limits                File limits
User            used    soft    hard  grace    used  soft  hard  grace
----------------------------------------------------------------------
root      --      20       0       0              2     0     0
szm       --     544       0       0            115     0     0
vbirduser1 --      32 1800000 2000000              8     0     0
vbirduser2 --      32 1800000 2000000              8     0     0
vbirduser3 --      32 1800000 2000000              8     0     0
vbirduser4 --      32 1800000 2000000              8     0     0
vbirduser5 --      32 1800000 2000000              8     0     0