Hmm seems your /tmp is full , it can cause this problem ... Do the following and see if its fixed .

You need to have root access to your server. If not, you can’t increase the size of /tmp and /var/tmp partition directory, sorry.


Shutdown httpd and mysql using these commands


Code: 
service httpd stop
service mysql stop

First, you need to edit the file securetmp in /usr/local/cpanel/scripts/ folder.


Code: 
nano /usr/local/cpanel/scripts/securetmp

As default the size for tmp is 512 MB , just make it something that is convenient to you .


In /usr/local/cpanel/scripts/securetmp file, look for a line like this:


my $tmpdsksize = 512000; # Must be larger than 250000

and change it to


my $tmpdsksize = 2097152; # Must be larger than 250000

This will allow us to allot 2GB of space size for the tmp partition.
Now, you need to log in to SSH using root account to make the changes. Once you are in, run these commands one by one.


Code: 
umount -l /tmp
umount -l /var/tmp
rm -fv /usr/tmpDSK
/usr/local/cpanel/scripts/securetmp

Then Restart the server :-


Code: 
shutdown -r 0

Now when the server is fully restarted, you can check the partitions using the following command.


Code: 
df -h
Bharat Reviewed by Bharat on . Server is running out of disk space! Hello, I need help to clean my VPS from unwanted files.. I use WHM/Cpanel and I don't understand how an account can reach over 150GB data stored when I can't see even 1GB of file size on it..could be hidden data? pls help.. root@vinge # df -h Filesystem Size Used Avail Use% Mounted on /dev/sda3 192G 182G 304M 100% / /dev/sda1 99M 24M 70M 26% /boot Rating: 5