server2:root:/>extendvg -f datavg hdisk152
0516-306 extendvg: Unable to find volume group datavg in the Device
Configuration Database.
0516-008 extendvg: LVM system call returned an unknown
error code (-271).
0516-792 extendvg: Unable to extend volume group.
server2:root:/>

server2:root:/> unset LDR_CNTRL

server2:root:/>echo $LDR_CNTRL
MAXDATA=0x80000000
server2:root:/>