[CentOS] du vs df size difference
Luciano Rocha
strange at nsk.no-ip.org
Wed Sep 30 21:05:30 UTC 2009
On Wed, Sep 30, 2009 at 04:59:25PM -0400, Ryan Pugatch wrote:
> Hi all,
>
> Curious issue.. looking in to how much disk space is being used on a
> machine (CentOS 5.3). When I compare the output of du vs df, I am
> seeing a 12GB difference with du saying 8G used and df saying 20G used.
>
> # du -hcx /
> 8.0G total
>
> # df -h /
> Filesystem Size Used Avail Use% Mounted on
> /dev/xvda3 22G 20G 637M 97% /
>
> I recognize that in most cases du and df are not going to report the
> same but I am concerned about having a 12GB disparity. Does anyone have
> any thoughts about this or reason as to why there is a big difference?
> I have read a few articles online about it and none have really shown
> such a large difference.
Do this:
mount /dev/xvda3 /mnt
du -hc /mnt
And see if you can find the other 12GB.
I usually do:
du -mc --max-depth 2 /mnt | sort -n
Though I've recently learned:
du -hc --max-depth 2 /mnt | sort --human-readable or some such, but that
requires a very recent coreutils installation.
--
lfr
0/0
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