These are the steps to use the extended SCSI disk in a VM. The disk shows up in VM as device /dev/sdb mounted as /opt/app. It was extended from 1 TB to 2 TB.
# Unmount the logical volume
umount /opt/app
# Create a new additional partition and change the system id to 8e. Use fdisk as shown below and chose to create a new primary partition. There is only one partition /dev/sdb1 to start with. New partition will be /dev/sdb2.
fdisk /dev/sdb
# Partprobe to reaload the prtition table into kernel
partprobe
# Create physical volume
pvcreate /dev/sdb2
# Find name of volume group to extend. In our case the name is localvg
vgdisplay
# Extend the volume group
vgextend localvg /dev/sdb2
# Find name of logical volume
lvdisplay
# Extend and resize the logical volume
lvextend -r -l +100%FREE /dev/localvg/bbed92058c4903275172716dd4a26a15
# Mount the logical volume
mount /dev/localvg/bbed92058c4903275172716dd4a26a15 /opt/app
