简单quota配置实例

简单quota配置实例

步骤：

mount挂载（带有usrquota）->quotacheck生成配置文件->edquota编辑配置文件->quotaon生效->quotaoof关闭

1，查看分区

[root@mylab ~]# fdisk -l /dev/sdb            

Disk /dev/sdb: 5368 MB, 5368709120 bytes

255 heads, 63 sectors/track, 652 cylinders

Units = cylinders of 16065 * 512 = 8225280 bytes

   Device Boot      Start         End      Blocks   Id System

/dev/sdb1               1          25      200781   83 Linux

2，挂载，加上配额选项

[root@mylab ~]# mount -o usrquota /dev/sdb1 /tmp/     

3，查看/tmp下的内容

[root@mylab ~]# ll /tmp/

total 12

drwx------ 2 root root 12288 May 1 21:14 lost+found

4，用quotacheck生成配额文件

[root@mylab ~]# quotacheck /tmp

[root@mylab ~]# ll /tmp/

total 18

-rw------- 1 root root 6144 May 1 22:54 aquota.user

drwx------ 2 root root 12288 May 1 21:14 lost+found

5，查看挂在分区属性

[root@mylab ~]# mount                       

/dev/sda3 on / type ext3 (rw)

proc on /proc type proc (rw)

sysfs on /sys type sysfs (rw)

devpts on /dev/pts type devpts (rw,gid=5,mode=620)

/dev/sda1 on /boot type ext3 (rw)

tmpfs on /dev/shm type tmpfs (rw)

none on /proc/sys/fs/binfmt_misc type binfmt_misc (rw)

/dev/sdb1 on /tmp type ext3 (rw,usrquota)

6，用edquota user 来编辑用户的配额文件，将hard改为10，单位为KB

[root@mylab ~]# edquota lab

Disk quotas for user lab (uid 500):

Filesystem                   blocks       soft       hard     inodes     soft     hard

/dev/sdb1                         0          0         10          0        0        0

7，开启quota

[root@mylab ~]# quotaon /tmp/

8，切换lab用户测试

[root@mylab ~]# su - lab

[lab@mylab ~]$ cd /tmp/

[lab@mylab tmp]$ ls

aquota.user lost+found

9，写一个5KB的空文件，成功

[lab@mylab tmp]$ dd if=/dev/zero of=/tmp/test bs=1024 count=5

5+0 records in

5+0 records out

5120 bytes (5.1 kB) copied, 1e-09 seconds, 5.1 TB/s

10，写一个15KB的文件，提示超出限制

[lab@mylab tmp]$ dd if=/dev/zero of=/tmp/test bs=1024 count=15

sdb1: write failed, user block limit reached.

dd: writing `/tmp/test': Disk quota exceeded

11+0 records in

10+0 records out

10240 bytes (10 kB) copied, 0.00121862 seconds, 8.4 MB/s

11，写出的最大为限额大小

[lab@mylab tmp]$ ll

total 29

-rw------- 1 root root 7168 May 1 23:22 aquota.user

drwx------ 2 root root 12288 May 1 21:14 lost+found

-rw-rw-r-- 1 lab lab 10240 May 1 23:22 test

12，以下为关闭quota测试，没有限制了

[lab@mylab tmp]$ exit

logout

[root@mylab ~]# quotaoff /tmp/

[root@mylab ~]# su - lab

[lab@mylab ~]$ dd if=/dev/zero of=/tmp/test bs=1024 count=15

15+0 records in

15+0 records out

15360 bytes (15 kB) copied, 0.00175783 seconds, 8.7 MB/s

[lab@mylab ~]$ ll /tmp/

total 35

-rw------- 1 root root 7168 May 1 23:24 aquota.user

drwx------ 2 root root 12288 May 1 21:14 lost+found

-rw-rw-r-- 1 lab lab 15360 May 1 23:24 test