title: du -skh * in / returns vastly different size from df on centos 5.5
body: <p>I have a vps slice running centos 5.5  I am supposed to have 15 gigs of disk space, but according to df it seems to double my disk space usage.</p>
  
  <p>when I run <code>du -skh *</code> in / as root i get:</p>
  
  <pre><code>[root@yardvps1 /]# du -skh *
  0       aquota.group
  0       aquota.user
  5.2M    bin
  4.0K    boot
  4.0K    dev
  4.9M    etc
  2.5G    home
  12M     lib
  14M     lib64
  4.0K    media
  4.0K    mnt
  299M    opt
  0       proc
  692K    root
  23M     sbin
  4.0K    selinux
  4.0K    srv
  0       sys
  48K     tmp
  2.0G    usr
  121M    var
  </code></pre>
  
  <p>this is consistent with what I have uploaded to the machine, and adds up to about 5gigs.</p>
  
  <p>BUT when i run <code>df</code> i get:</p>
  
  <pre><code>[root@yardvps1 /]# df
  Filesystem           1K-blocks      Used Available Use% Mounted on
  /dev/simfs            15728640  11659048   4069592  75% /
  none                    262144         4    262140   1% /dev
  </code></pre>
  
  <p>it is showing me using almost 12 gigs already.</p>
  
  <p>what is causing this discrepancy and is there anything I can do about it, I planned the server out based on 15 gigs but now it is basically only letting me have about 7 gigs of stuff on it.</p>
  
  <p>thanks.</p>