HOW TO: Enable Quota Support

[choon]

This guide will help you to enable quota support in your Red Hat Linux system so that you can set user or/and group quota.

Step 1: Gain root access to your server using SSH.

Step 2: Check whether the quota package is install or otherwise please install it before continue.
rpm -qa|grep quota

Step 3: Modify /etc/fstab file
Partitions that you have not yet enabled quota normally look something like:
/dev/hda5 /home ext3 default 1 2
To enable user quota support for that partition, simply add in usrquota next to default such as below:
/dev/hda5 /home ext3 default,usrquota 1 2
To enable group quota, just add grpquota.
To enable both user and group quotas, add in both usrquota,grpquota.

Step 4: Reboot or Not to Reboot.
Normally I won't reboot, you can try this command on the partition that you have modified or added in quota support:
mount -o remount /home

Step 5: Quota Check
/sbin/quotacheck -cguvamf -F vfsv0

Step 6: Rerun Quota Check for old version
/sbin/quotacheck -cguvamf -F vfsold

Step 7: Turn on Quotas
/sbin/quotaon -a

To see the report of quotas, issue this command:
repquota -a

To set a user quota, issue the following command:
setquota -u USERNAME SOFTQUOTA HARDQUOTA SOFTFILELIMIT HARDFILELIMIT -a
Where:
USERNAME is the user
SOFTQUOTA in kilobytes
HARDQUOTA in kilobytes
SOFTFILELIMIT set it to 0 normally
HARDFILELIMIT set it to 0 also

You are done :)

Thanks.

References:
Quota mini-HOWTO (http://www.tldp.org/HOWTO/Quota.html)