Whm login screen shows internal server error +VPS

errors:
Whm login screen shows internal server error
or
Disk quota exceeded message when trying to create file

=========
solution:
The problem is due to inode number full
we can incarese it by using the following

df -i gives the inode details
-bash-3.2# df -i
Filesystem Inodes IUsed IFree IUse% Mounted on
/dev/vzfs 1000000 600020 399980 61% /
none 2049647 96 2049551 1% /dev
-bash-3.2#

==========
vzctl set 128 --diskinodes $(( 200000*5 )):$(( 220000*5 )) --save
===========

or

===========
vzctl set 128 –diskinodes 200000:200000 –save
===========
Saved parameters for Container 128