[CentOS] very large difference between df and du (10 GB, hard to believe )

Mon Feb 1 16:02:54 UTC 2010
Peter Kjellstrom <cap at nsc.liu.se>

On Monday 01 February 2010, Brian Mathis wrote:
> On Mon, Feb 1, 2010 at 10:36 AM, Matt Iavarone <matt.iavarone at gmail.com> 
wrote:
> > This is typical.  There were probably files deleted from the file
> > system that are still in use by a process.  Restarting the process
> > will release the files and df and du will jive.
>
> That argument only holds until you reach the point in the email where
>
> he said this:
>     > I rebooted on the CentOS v4.8 CD #1, started "linux rescue" :

Indeed. At this point I'd start looking at things hiding under mount points. 
But as the OP seems to have only one filesystem, /, then this will be limited 
to mount-points for special filesystems (like sys, proc and /dev/shm).

What I'm getting at is that you could have, for example, a 10G file /proc/foo 
on the actaul /-filesystem. As soon as proc is mounted on /proc this would be 
invisible.

/Peter

> After the reboot that would be taken care of, so that's not the issue here.
-------------- next part --------------
A non-text attachment was scrubbed...
Name: signature.asc
Type: application/pgp-signature
Size: 189 bytes
Desc: This is a digitally signed message part.
URL: <http://lists.centos.org/pipermail/centos/attachments/20100201/414db4ef/attachment-0005.sig>