Quota

Installation

To enable quotas under Linux (RH based), you will need the quota package.

yum install quota

You will then need to make your mounts support quotas using usrquota as a option. For example, in fstab, to make /export have quota support:

/dev/sdb1               /export                 ext4    defaults,usrquota 1 2

Remount the mount to apply:

mount -o remount /export

With quotas enabled, you will need to create your quotas

quotacheck -cug /export

Note that:

* -c  - creates
* -u  - quotas for users
* -g  - quotas for groups

Configuration

Use edquota or setquota to modify the quota for a specific user.

When you run edquota leo3 you will see:

1 Disk quotas for user leo3 (uid 1061):
2   Filesystem                   blocks       soft       hard     inodes     soft     hard
3   /dev/sdb1                     91380          0          0       1127        0        0

By default, there is no quotas for users (hence 0). To specify the soft/hard values for both blocks and inodes, edit the appropriate columns and then save and quit the editor.

1 Disk quotas for user leo3 (uid 1061):
2   Filesystem                   blocks       soft       hard     inodes     soft     hard
3   /dev/sdb1                     91380     102400     153600       1127     8000     9000

In the above example, I gave leo3 100MB of (soft) quota and a 150MB hard limit. The number of inodes enforces a file limit. That is, I have given leo3 an upper limit of 8000 (soft) file/directories and a upper hard limit of 9000.

You may set the grace period by running

edquota -t