设置ext4文件系统基于用户和组的磁盘限额

直接上程序

[root@FQDN he]# vi /etc/fstab   //编辑etc/fstab文件启动文件系统的quota挂装选项
[root@FQDN he]# mkfs.ext4  /dev/data/home
mke2fs 1.42.9 (28-Dec-2013)
Filesystem label=
OS type: Linux
Block size=4096 (log=2)
Fragment size=4096 (log=2)
Stride=0 blocks, Stripe width=0 blocks
196608 inodes, 786432 blocks
39321 blocks (5.00%) reserved for the super user
First data block=0
Maximum filesystem blocks=805306368
24 block groups
32768 blocks per group, 32768 fragments per group
8192 inodes per group
Superblock backups stored on blocks: 
	32768, 98304, 163840, 229376, 294912
Allocating group tables: done                            
Writing inode tables: done                            
Creating journal (16384 blocks): done
Writing superblocks and filesystem accounting information: done 
[root@FQDN he]# mount   /dev/data/home    /home
[root@FQDN he]# vi /etc/fstab
[root@FQDN he]# vi /etc/fstab
[root@FQDN he]# mount -o remount /home   //重装文件系统
[root@FQDN he]# mount -a
[root@FQDN he]# quotacheck -cmvug /home
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/data-home [/home] done
quotacheck: Checked 2 directories and 2 files
[root@FQDN he]# vi /etc/fstab
[root@FQDN he]# quotacheck -cmvug /home   //创建quota数据库文件并且启用quota
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/data-home [/home] done
quotacheck: Checked 2 directories and 2 files
[root@FQDN he]# quotaon -avug
/dev/mapper/data-home [/home]: group quotas turned on
/dev/mapper/data-home [/home]: user quotas turned on
[root@FQDN he]# ll /home/aquota*
-rw-------. 1 root root 6144 Jan 11 22:10 /home/aquota.group
-rw-------. 1 root root 6144 Jan 11 22:10 /home/aquota.user
[root@FQDN he]# setquota -u he 50M 60M 2000 2500 /home
setquota: user he does not exist.
[root@FQDN he]# cd home
-bash: cd: home: No such file or directory
[root@FQDN he]# ls
lost+found
[root@FQDN he]# cd ..
[root@FQDN /]# ls home
aquota.group  aquota.user  lost+found
[root@FQDN /]# setquota -u he 50M 60M 2000 2500 /home //设置用户的文件限额，设置为容量软限制50MB,硬限制60MB；文件次数软限制2000，硬限制2500
setquota: user he does not exist.
[root@FQDN /]# su - root
Last login: Thu Jan 11 21:44:03 CST 2018 on pts/1
[root@FQDN ~]# setquota -u he 50M 60M 2000 2500 /home
setquota: user he does not exist.
[root@FQDN ~]# useradd he
[root@FQDN ~]# setquota -u he 50M 60M 2000 2500 /home
[root@FQDN ~]# quota -u he
Disk quotas for user he (uid 1002): 
     Filesystem  blocks   quota   limit   grace   files   quota   limit   grace
/dev/mapper/data-home
                     28   51200   61440               7    2000    2500        
[root@FQDN ~]# setquota -u he 50M 60M 0 0 /home
[root@FQDN ~]# useradd he1
[root@FQDN ~]# setquota -u -p he he1 /home   //以其他文件为参考设置用户的文件限额
[root@FQDN ~]# quota -u he1
Disk quotas for user he1 (uid 1003): 
     Filesystem  blocks   quota   limit   grace   files   quota   limit   grace
/dev/mapper/data-home
                     28   51200   61440               7       0       0        
[root@FQDN ~]# groupadd long
[root@FQDN ~]# groupadd long1
[root@FQDN ~]# setquota -g 1G 2G 20K 25K  /home  //设置组的磁盘限额，具体同上
setquota: group 1G does not exist.
[root@FQDN ~]# vi /etc/fstab
[root@FQDN ~]# setquota -g long 1G 2G 2k 25k  /home //以其他组为参考设置组的磁盘限额
[root@FQDN ~]# quota -gv long
Disk quotas for group long (gid 1005): 
     Filesystem  blocks   quota   limit   grace   files   quota   limit   grace
/dev/mapper/data-home
                      0  1048576 2097152               0    2000   25000        
[root@FQDN ~]# setquota -g -p long long1  /home
[root@FQDN ~]# vi /etc/fstab
[root@FQDN ~]# quota -gv long1
Disk quotas for group long1 (gid 1006): 
     Filesystem  blocks   quota   limit   grace   files   quota   limit   grace
/dev/mapper/data-home
                      0  1048576 2097152               0    2000   25000        
[root@FQDN ~]# repquota –augv   //查看磁盘限额报告
*** Report for user quotas on device /dev/mapper/data-home
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       
he        --      28   51200   61440              7     0     0       
he1       --      28   51200   61440              7     0     0       

Statistics:
Total blocks: 7
Data blocks: 1
Entries: 3
Used average: 3.000000
*** Report for group quotas on device /dev/mapper/data-home
Block grace time: 7days; Inode grace time: 7days
                        Block limits                File limits
Group           used    soft    hard  grace    used  soft  hard  grace
----------------------------------------------------------------------
root      --      20       0       0              2     0     0       
he        --      28       0       0              7     0     0       
he1       --      28       0       0              7     0     0       
long      --       0 1048576 2097152              0  2000 25000       
long1     --       0 1048576 2097152              0  2000 25000       

Statistics:
Total blocks: 7
Data blocks: 1
Entries: 5
Used average: 5.000000