[CentOS] strange disk space calculation ext4 df and du

[Leon Fauster]

Am 04.11.2014 um 10:40 schrieb Götz Reinicke - IT Koordinator <goetz.reinicke at filmakademie.de>:
> Am 04.11.14 um 09:43 schrieb Peter Kjellström:
>> On Mon, 03 Nov 2014 16:53:05 +0100
>> Götz Reinicke - IT Koordinator <goetz.reinicke at filmakademie.de> wrote:
>> 
>> ...
>>> df shows 9.4 GB free, 198GB used.
>>> 
>>> If I do "du -sch * | sort -h -r" on /, I just have close to 3.5GB
>>> used ....
>> 
>> Next thing to check is stuff hiding under mount points. That is for
>> example the /tmp directory on the root fs containing stuff but another
>> fs then mounted on /tmp hiding that.
> 
> df -h
> 
> Filesystem            Size  Used Avail Use% Mounted on
> /dev/mapper/vg_richter2-lv_root
>                      219G  198G  9,3G  96% /
> tmpfs                  16G     0   16G   0% /dev/shm
> /dev/sda1             477M   49M  403M  11% /boot
> /dev/sdb              8,2T  1,1T  7,1T  14% /srv/files
> 
> so I dont see any hidden fs under / beside /srv/files, which is not
> included in my du calculation.


hidden stuff not hidden fs - just unmount /boot + /srv/files and check 
the emptiness in this directories.

--
LF