[CentOS] du vs df size difference

[Clint Dilks]

Ryan Pugatch wrote:
> Marcelo Roccasalva wrote:
>
>   
>> Maybe you have a mount point overlaping big files... du -x will not find them...
>>     
>
> Hey Marcelo,
>
> I am not sure what you mean.. can you give me an example?
>
> Thanks
>
> Ryan
>
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>   
Hi,

He means a situation where you have something this this

You create a partion lets say /dev/hda1 you use it as you / partition
you create a directory called /data and copy some data into it
You then have a second partiton /dev/hda2 and you mount /dev/hda2 off of 
/data

This mean that the data originally copied to the /data directory on hda1 
is still taking up space on hda1 but you cant see it.