Disk usage on RedHat ES 4 with LVM

Hi,

I'm trying to monitor disk usage via the telnet/ssh monitor on a Dell factory installed RedHat ES 4 machine. The problem is I do not get all available mountpoints. This is my output of df:

[root@app01 src]# df -h
Filesystem Size Used Avail Use% Mounted on
/dev/mapper/VolGroup00-LogVol00
4.0G 978M 2.8G 26% /
/dev/sda3 190M 17M 164M 10% /boot
none 2.0G 0 2.0G 0% /dev/shm
/dev/mapper/VolGroup00-LogVol05
4.0G 41M 3.7G 2% /home
/dev/mapper/VolGroup00-LogVol03
4.0G 43M 3.7G 2% /tmp
/dev/mapper/VolGroup00-LogVol02
7.9G 3.3G 4.2G 45% /usr
/dev/mapper/VolGroup00-LogVol04
4.0G 176M 3.6G 5% /var
192.168.1.5:/backup 670G 5.2G 665G 1% /backup

All I get is /boot, /dev/shm and /backup.

Any ideas on how to solve this?

Thanks,
Bjorn