配额实现

   1  启用配额限制 vim   /etc/fstab

     UUID=”5263027d-f571-4c4a-98d8-930e41e0e265″  /home  ext4  usrquota,grpquota  0 0

    [root@localhost ~]# mount -o remount  /home

   2创建配额数据库

  [root@localhost home]# mount

  [root@localhost home]# mount -o remount /home

 [root@localhost home]# mount

  /dev/sda2 on / type ext4 (rw)
proc on /proc type proc (rw)
sysfs on /sys type sysfs (rw)
devpts on /dev/pts type devpts (rw,gid=5,mode=620)
tmpfs on /dev/shm type tmpfs (rw,rootcontext=”system_u:object_r:tmpfs_t:s0″)
/dev/sda6 on /app type ext4 (rw)
/dev/sda1 on /boot type ext4 (rw)
/dev/sda3 on /home type ext4 (rw)
/dev/sdc1 on /home type ext4 (rw,usrquota,grpquota)      //  这一行必须生效
none on /proc/sys/fs/binfmt_misc type binfmt_misc (rw)

  [root@localhost ~]# getenforce 
Enforcing
[root@localhost ~]# setenforce 0

[root@localhost ~]# getenforce 

Permissive

[root@localhost home]# quotacheck -cug  /home         // c-create 创建的意思  u=user 用户 g=group用户组
[root@localhost home]# ls
aquota.group  aquota.user  fsy  lost+found  mage

[root@localhost home]# quotaon /home                 //  启用磁盘数据库

[root@localhost home]# edquota fsy                    //    设置 fsy用户

Disk quotas for user fsy (uid 500):
  Filesystem                   blocks       soft       hard     inodes     soft     hard
  /dev/sdc1                        32      80000     100000          8        0        0

   3 测试

[root@localhost home]# su fsy

[fsy@localhost home]$ cd /home/fsy
[fsy@localhost ~]$ touch f1

[fsy@localhost ~]$ dd if=/dev/zero of=f1 bs=1M  count=500 
sdc1: warning, user block quota exceeded.
sdc1: write failed, user block limit reached.
dd: writing `f1′: Disk quota exceeded
98+0 records in
97+0 records out
102367232 bytes (102 MB) copied, 0.216797 s, 472 MB/s

[fsy@localhost ~]$ dd if=/dev/zero of=f1 bs=1M  count=900
dd: writing `f1′: Disk quota exceeded
98+0 records in
97+0 records out
102367232 bytes (102 MB) copied, 1.10981 s, 92.2 MB/s

[fsy@localhost ~]$ dd if=/dev/zero of=f1 bs=1M  count=90
sdc1: warning, user block quota exceeded.
90+0 records in
90+0 records out
94371840 bytes (94 MB) copied, 0.411171 s, 230 MB/s

[fsy@localhost ~]$ ll f1 -h
-rw-rw-r–. 1 fsy fsy 90M Apr 25 17:40 f1