title: Give docker more diskspace for containers
body: <p>I have a question. Our docker server was out of space for its containers so I gave it a bigger disk from 500GB to 1TB(its a vm) Ubuntu sees this correctily. If I do the command <code>vgs</code> I get this output:</p>
  
  <pre><code>  VG        #PV #LV #SN Attr   VSize   VFree
    Docker-vg   1   2   0 wz--n- 999.52g 500.00g
  </code></pre>
  
  <p>But Docker still thinks it's out of space. I have rebooted the docker VM but still he thinks it's out of space. If I use the <code>df -h</code> command this is the output:</p>
  
  <pre><code>Filesystem                   Size  Used Avail Use% Mounted on
   udev                         3.9G     0  3.9G   0% /dev
  tmpfs                        792M  8.6M  783M   2% /run
  /dev/mapper/Docker--vg-root  490G  465G     0 100% /
  tmpfs                        3.9G     0  3.9G   0% /dev/shm
  tmpfs                        5.0M     0  5.0M   0% /run/lock
  tmpfs                        3.9G     0  3.9G   0% /sys/fs/cgroup
  /dev/xvda1                   472M  468M     0 100% /boot
  </code></pre>
  
  <p>As you see the docker-vg still thinks its 490gb
  I don't know where to look. can someone help me ?</p>