LVM problem

[Luc MAIGNAN]

Hi,

I want to add a new disk (/dev/sdb1) to an existing VG.

Here what I've done :

* pvcreate /dev/sdb1
* vgextend VolGroup00 /dev/sdb1
* lvresize -l +20901 /dev/VolGroup00/LogVol00

(LogVol00 is mounted on /)

Then, when I make a 'lvdisplay' I saw the correct size of the volume 
(sum of the old size plus the size of the new disk)

But a 'df -kh' always gives me the old size...

What's wrong ???

Thanks for any help

Regards