Resize the partition using LVM:

sudo lvextend -L30G  /dev/mapper/VolGroup00-LogVol05

Unmount the partition (hopefully it isn’t the root!):

sudo umount /dev/mapper/VolGroup00-LogVol05

Check the FS for errors

sudo e2fsck -f /dev/mapper/VolGroup00-LogVol05

Adjust the FS to the new size

sudo resize2fs /dev/mapper/VolGroup00-LogVol05

Remount the disk

sudo mount /dev/mapper/VolGroup00-LogVol05 /home