If you are receiving the following error when trying to enable quotas in WHM:

quotacheck: Cannot find filesystem to check or filesystem not mounted with quota option
You should first try doing both of the following via SSH:
Code: 
/scripts/fixquotas
/scripts/fixcommonproblems
Then try to enable quotas, if the error is still occurring you may need to edit your fstab file, this can be tricky. First you will need to run:
Code: 
nano /etc/fstab
or
Code: 
vi /etc/fstab
Then you will need to locate where your directories are mounted on. For example, if you have this line:
Code: 
/dev/mapper/vg-root / ext4 discard,noatime 1 1
You will need to replace it with:
Code: 
/dev/mapper/vg-root / ext4 discard,noatime,usrquota 1 1
You should now reboot your system and once booted go into WHM and click Enable Quotas or run:
Code: 
/scripts/fixquotas
via SSH.
Sp32 Reviewed by Sp32 on . How to enable quotas on an ext4 file system. Centos 6 (Works with WHM) If you are receiving the following error when trying to enable quotas in WHM: You should first try doing both of the following via SSH: /scripts/fixquotas /scripts/fixcommonproblems Then try to enable quotas, if the error is still occurring you may need to edit your fstab file, this can be tricky. First you will need to run: nano /etc/fstabor vi /etc/fstabThen you will need to locate where your directories are mounted on. For example, if you have this line: /dev/mapper/vg-root / ext4 Rating: 5