e2fsck / resize2fs problems
How did you create the LVM in the first place? Did you prepare the physical volume using /dev/md0 or did you do an fdisk first and use one of the partitions as the physical volume.
If you used the entire device as a PV then fdisk is not going to work on it as the LVM information will be placed where fdisk expects to find a partition table.
What you might want to check is to do a vgdisplay -v /dev/vg03 to see what the physical volumes are present in the volume group.