[mythtv-users] OT / LVM problem

[mark]

I am trying to give myself some more space for Myth.

I have created an LVM volume with XFS, and have 2 participating disks.  
I have extended the LVM to 200GIGS but df -h show only 100gigs.

Any ideas from people that use LVM?

Here is my vgdisplay -v:  ( it shows the 200Gig that should be 
available ) ( df -h below too )

  Finding all volume groups
     Finding volume group "VGforMyth"
   --- Volume group ---
   VG Name               VGforMyth
   System ID
   Format                lvm2
   Metadata Areas        2
   Metadata Sequence No  13
   VG Access             read/write
   VG Status             resizable
   MAX LV                255
   Cur LV                1
   Open LV               1
   Max PV                255
   Cur PV                2
   Act PV                2
   VG Size               287.12 GB
   PE Size               64.00 MB
   Total PE              4594
   Alloc PE / Size       3214 / 200.88 GB
   Free  PE / Size       1380 / 86.25 GB
   VG UUID               DZUdJF-9xb8-csTF-93cJ-7ua2-TIdO-kvLua1

   --- Logical volume ---
   LV Name                /dev/VGforMyth/video
   VG Name                VGforMyth
   LV UUID                nmVpCE-4pbb-94Gd-YEXN-ADzN-0k9F-PR6a70
   LV Write Access        read/write
   LV Status              available
   # open                 1
   LV Size                200.88 GB
   Current LE             3214
   Segments               2
   Allocation             next free (default)
   Read ahead sectors     0
   Block device           253:0

   --- Physical volumes ---
   PV Name               /dev/sdb1
   PV UUID               lnJ5Zj-4cpa-JVbU-W9a8-F9ML-7I7t-Gcuwm4
   PV Status             allocatable
   Total PE / Free PE    2980 / 1380

   PV Name               /dev/sda5
   PV UUID               286dBB-2nEv-9ZRH-HH5A-iMNq-koVE-b9WJ6L
   PV Status             allocatable
   Total PE / Free PE    1614 / 0


And here is the df -h:

Filesystem            Size  Used Avail Use% Mounted on
/dev/sda2             9.7G  5.0G  4.2G  55% /
/dev/sda1             122M  9.8M  106M   9% /boot
none                  252M     0  252M   0% /dev/shm
/dev/mapper/VGforMyth-video
                       100G   82G   19G  82% /video