adding disk space to LVM

[Peter Lesterhuis]

Hi,
I am running out of free disk space, so I tried to add disk space to my 
LVG. I formatted 40 Gb to ext3-filesystem and added this to my LVG. The 
name of this new partition os LogVol02.
It was not automatically mounting during reboot. I put a line in /etc/fstab:
/dev/hda7               /mnt/mov                ext3    defaults         0 0
 and now I can have access to the partition at /mnt/mov.

But when I type "df -h" the partition (hda7) is not shown at all. Why?

/]$ df -h
Filesystem            Size  Used Avail Use% Mounted on
/dev/mapper/VolGroup00-LogVol00
                       38G   32G  3.7G  90% /
/dev/hda3              99M   14M   80M  15% /boot
none                  252M     0  252M   0% /dev/shm
/dev/hda5              11G  3.9G  6.8G  37% /mnt/backup/

When I type "lvs" to acquire information about my logical volumes, this 
is the output:
/]# lvs
  LV       VG         Attr   LSize  Origin Snap%  Move Copy%
  LogVol00 VolGroup00 -wi-ao 37.94G
  LogVol01 VolGroup00 -wi-ao  1.00G
  LogVol02 VolGroup00 -wi-a- 39.22G

/LogVol02 is shown now, but without the "o"-attr. What does that mean?  
Man lvs says the device is not "o"pen. How can I make it open? I want 
the new partition to be automatically mounted (now I get an error during 
booting indicating that hda7 is already mounted or busy) and I want it 
to be visible after the df-command.
I hope somebody can give me an explanation.
Peter.