Nov 16, 2019
cPanel Access Level
Root Administrator
Hello, today I got an warning email from my cPanel which says DISKCRITICAL System uses %93,07 of available disk space. So I deleted some of backups to open some space but the problem is still here.

I tried to figure out the problem, and managed to understand it, but don't know how to solve this.

# df -h
Filesystem Size Used Avail Use% Mounted on
devtmpfs 15G 0 15G 0% /dev
tmpfs 15G 32K 15G 1% /dev/shm
tmpfs 15G 1.1G 14G 8% /run
tmpfs 15G 0 15G 0% /sys/fs/cgroup
/dev/mapper/centos-root 50G 38G 13G 76% /
/dev/sda1 1014M 216M 799M 22% /boot
/dev/mapper/centos-home 315G 20G 296G 7% /home
/dev/loop0 2.1G 3.6M 1.9G 1% /tmp
tmpfs 3.0G 12K 3.0G 1% /run/user/42
tmpfs 3.0G 40K 3.0G 1% /run/user/0

As you can see cPanel/WHM using /dev/mapper/centos-root which is 50GB only. The huge space is on /dev/mapper/centos-home which is 315GB and using only 20GB. I haven't configured cPanel to use that amount of space or made any configuration on this issue. Installed as default and started to use it nearly 8 months ago and now I cannot solve it.

What should I do? Can you please instruct me to solve this problem step by step? Thank you.


Product Owner II
Staff member
Nov 14, 2017
Right now it looks like you're consuming the most space on /root but it isn't currently 90% full. If you store backups on the server I'd advise creating a new mount for backups or alternatively putting them on /home though this will cause issues with quotas. If you're unsure how to make the suggested modifications I'd suggest contacting a qualified system administrator. If you don't have one you might find one here: System Administration Services

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