Set a specific disk space size for Linux host users--ubuntu12.04 configure disk quotas actual combat configuration

Using the software: quota

Operating system: Ubuntu 12.04_x86_64

For partitions: Users under/home

First, install the quota

# Apt-get Install-y Quota

Second, configure disk quota partition

Configure the device catalog to support the appropriate quota

# Vi/etc/fstab in effect after reboot

/dev/sda7/home EXT4 Defaults,usrquota,grpquota 1 2

reproduce mount/home partition

#mount-O Remount,usrquota,grpquota/home

Test quota

#quotacheck-avug

Quotacheck-auvg

Quotacheck:quota for users are enabled on Mountpoint/home so Quotacheck might damage the file.

Turn quotas off or use-f to force checking.

#quotacheck-avug-f

Quotacheck:cannot remount filesystem mounted on/home read-only so counted values might is right.

Please stop the programs writing to filesystem or USE-M flag to force checking.

# quotacheck-auvg-f-M

Quotacheck:scanning/dev/disk/by-uuid/52bce451-c00a-4655-b7c4-4ed911361be6 [/] quotacheck:lstat Cannot stat '//var/ Lib/lightdm/.gvfs ': Permission denied

Guess you ' d better run fsck first!

Exiting ...

# fsck

Fsck from Util-linux 2.20.1

E2fsck 1.42 (29-nov-2011)

/DEV/SDA1 is mounted.

WARNING!!!   The filesystem is mounted. If you continue ***will***

Cause ***severe*** filesystem damage.

Do you really want to continue<n>? Yes

/dev/sda1:recovering Journal

Clearing orphaned inode 291185 (Uid=0, Gid=0, mode=0100640, size=1074)

Clearing orphaned inode 291988 (Uid=0, Gid=0, mode=0100640, size=62)

Clearing orphaned inode 535083 (uid=104, gid=111, mode=0100600, size=1)

Clearing orphaned inode 793605 (uid=104, gid=111, mode=0100664, size=2028)

Setting free inodes count to 1011177 (was 1011199)

Setting Free Blocks count to 3061839 (was 3061776)

/dev/sda5:clean, 234007/1245184 files, 1918641/4980480 blocks

There are two ways of doing this:

Method 1: Solve the problem quickly without affecting the use of system services

#reboot

Act 2: End the process being used

#fuser-M/home

10334rce 10665rce 10843rce

#ps-aux | grep 10334

000 4753 0.0 0.0 557828 23976? Sl 15:35 0:00/usr/bin/python/usr/lib/unity-scope-video-remote/unity-scope-video-remote

#quotacheck-avug

Quotacheck:quota for users are enabled on Mountpoint/home so Quotacheck might damage the file.

Turn quotas off or use-f to force checking.

At this point, execute the QUOTACHECK hint, plus the-f force

#quotacheck-avug-f

QUOTACHECK:SCANNING/DEV/SDA7 [Home] Done

Quotacheck:checked 236 directories and 1225 files

#ll/home/

Total 52

Drwxr-xr-x 6 root root 4096 May 11 15:39./

Drwxr-xr-x root root 4096 May 10 14:07. /

-RW-------1 root root 7168 may 15:39 Aquota.group

-RW-------1 root root 7168 may 15:39 Aquota.user

Third, open disk quotas

The following error is found after using the #quotaon-auvg command

#quotaon-AUVG

Quotaon:using/home/aquota.group On/dev/sda7 [Home]: Device or resource busy

Quotaon:using/home/aquota.user On/dev/sda7 [Home]: Device or resource busy

This closes the quota

#quotaoff-A

Replay on to show that the disk quota for the home partition has been completed

#quotaon-AUVG

/DEV/SDA7 [Home]: Group quotas turned on

/DEV/SDA7 [Home]: User quotas turned on

Iv. quotas for users

Configure the user quota_user_001 that you have created

#edquota-uquota_user_001 #配置用户磁盘配额

ISK quotas for user Qibo (UID 1001):

Filesystem blocks soft Hard inodes soft$

/DEV/SDA7 12 300000000 524288000 4 0$

Unit is KB

Where blocks is already used capacity, soft and hard are respectively, limit 287G and 500G

Ctrl+o Write

Ctrl+x exit

Copy the user's configuration information

#edquota-P quota_user_001-u quota_user_002

Modify Grace time when user files exceed large hours

#edquota-T

36500

Because there is no mandatory requirement, it is set to 36,500 days

Edit the total usage size of the MYQUOTAGRP group

Edquota-g quota_group_001

View restrictions for all disk quotas users

#repquota-AUV

#检查用户磁盘配额剩余情况

$quota-vsug quota_user_001

See if there is a warning message

$warnquota

# Quotaoff/home (cancels the disk space limit.) ）

# Quotaon/home (now start the disk space limit.) ）

V. Testing

You can set a limit of 50M to create files with a capacity of more than 80M

The test command is as follows

# su-quota_user_001

$ dd If=/dev/zero Of=ceshi bs=1m count=40

Recorded 40+0 read-in

Recorded the writing of 40+0.

41943040 bytes (0.0535329 seconds, 783 MB/s) replicated

[Email protected]:~$ ls

Ceshi

[Email protected]:~$ du-sh *

40M Ceshi

$ dd If=/dev/zero of=ceshi2 bs=1m count=40

DD: Writing "CESHI2": exceeding disk quota

Recorded 9+0 read-in

Recorded the writing of 8+0.

9248768 bytes (9.2 MB) Replicated, 0.0151042 sec, 612 mb/sec

$ du-sh *

40M Ceshi

8.9M Ceshi2

DD If=/dev/zero of=bigfile2 bs=1m count=40

You'll find that data is only 49.8M.

This article is from the "M-tier" blog, so be sure to keep this source http://mengix.blog.51cto.com/7194660/1774759

Set a specific disk space size for Linux host users--ubuntu12.04 configure disk quotas actual combat configuration