Linux 设置 xfs 格式的磁盘配额

格式化磁盘

1.创建一个逻辑卷并格式化为 xfs格式，然后查看 uuid

[root@localhost ~]# blkid /dev/myvg/xfs
/dev/myvg/xfs: UUID="e7710906-95db-4468-9527-73c25a7e944f" TYPE="xfs"

2.编辑/etc/fstab 文件，添加

UUID=e7710906-95db-4468-9527-73c25a7e944f /mnt/xfs xfs defaults,usrquota,grpquota 0 0

3.查看并挂载

创建目录

[root@localhost ~]# mkdir -p /mnt/xfs
[root@localhost ~]# mount -a

查看是否启动配额

[root@localhost ~]# mount | tail -1
/dev/mapper/myvg-xfs on /mnt/xfs type xfs (rw,relatime,seclabel,attr2,inode64,usrquota,grpquota)    

4.创建配额

设置块的软限制为12m 硬限制为20 文件数软限制为3 硬限制为5

[root@localhost ~]# xfs_quota -x -c 'limit bsoft=12m bhard=20m isoft=3 ihard=5 zhangsan' /mnt/xfs/

5.查看配额

[root@localhost ~]# xfs_quota -x -c  report /mnt/xfs/
User quota on /mnt/xfs (/dev/mapper/myvg-xfs)
                               Blocks
User ID          Used       Soft       Hard    Warn/Grace
---------- --------------------------------------------------
root                0          0          0     00 [--------]
zhangsan        51200      12288      20480     00 [--none--]

Group quota on /mnt/xfs (/dev/mapper/myvg-xfs)
                               Blocks
Group ID         Used       Soft       Hard    Warn/Grace
---------- --------------------------------------------------
root                0          0          0     00 [--------]
zhangsan        51200          0          0     00 [--------]

6.赋予目录权限

[root@localhost ~]# setfacl -m user:zhangsan:rwx /mnt/xfs/
[root@localhost ~]# setfacl -m group:zhangsan:rwx /mnt/xfs/

7.切换到 zhangsan 测试写入文件数量

[zhangsan@localhost xfs]$ pwd
/mnt/xfs
[zhangsan@localhost xfs]$ touch a{1..10}
touch: cannot touch ‘a6’: Disk quota exceeded
touch: cannot touch ‘a7’: Disk quota exceeded
touch: cannot touch ‘a8’: Disk quota exceeded
touch: cannot touch ‘a9’: Disk quota exceeded
touch: cannot touch ‘a10’: Disk quota exceeded
[zhangsan@localhost xfs]$ ls
a1  a2  a3  a4  a5

发现最多只能写入5个文件

8.测试块

由于限制了文件数，所以，这里先删除一个文件

[zhangsan@localhost xfs]$ ls
a1  a2  a3  a4  a5
[zhangsan@localhost xfs]$ rm -rf a5

写入12m 文件，已经达到块的软现在，没有报错，成功写入 文件

[zhangsan@localhost xfs]$ dd if=/dev/zero of=my.iso bs=1M count=12
12+0 records in
12+0 records out
12582912 bytes (13 MB) copied, 0.00998071 s, 1.3 GB/s

再次写入12m 文件，命名为 my1.iso，并且删除一个文件，因为限制了文件数为5 写入失败，因为总共已经超过20m 了

   [zhangsan@localhost xfs]$ ls
a1  a2  a3  a4  my.iso
[zhangsan@localhost xfs]$ rm -rf a4
[zhangsan@localhost xfs]$ ls
a1  a2  a3  my.iso
[zhangsan@localhost xfs]$ dd if=/dev/zero of=my1.iso bs=1M count=12
dd: error writing ‘my1.iso’: Disk quota exceeded
9+0 records in
8+0 records out
8388608 bytes (8.4 MB) copied, 0.00518743 s, 1.6 GB/s

查看

[root@localhost ~]# xfs_quota -x -c  report /mnt/xfs/
User quota on /mnt/xfs (/dev/mapper/myvg-xfs)
                               Blocks
User ID          Used       Soft       Hard    Warn/Grace
---------- --------------------------------------------------
root                0          0          0     00 [--------]
zhangsan        20480      12288      20480     00  [6 days]

Group quota on /mnt/xfs (/dev/mapper/myvg-xfs)
                               Blocks
Group ID         Used       Soft       Hard    Warn/Grace
---------- --------------------------------------------------
root                0          0          0     00 [--------]
zhangsan        20480          0          0     00 [--------]

也可以使用edquota 去设置

[root@localhost ~]# edquota -u zhangsan
Disk quotas for user zhangsan (uid 1010):
  Filesystem                   blocks       soft       hard     inodes     soft     hard
  /dev/mapper/myvg-xfs          20480      12288      20480          5        3        5

默认情况下是限制用户，限制组，可以参考如下命令

[root@localhost ~]# xfs_quota -x -c 'limit bsoft=10m bhard=30m isoft=10 ihard=30 -g zhangsan' /mnt/xfs/

然后

[root@localhost ~]# edquota -g zhangsan
Disk quotas for group zhangsan (gid 1012):
  Filesystem                   blocks       soft       hard     inodes     soft     hard
  /dev/mapper/myvg-xfs          20480      10240      30720          5       10       30