Im following the directions from
Mirroring the Root File System and Primary Swap
#
Mirror the root logical volume to the above disk:
lvextend -m 1 /dev/vg00/lvol1 /dev/dsk/c0t3d0
#
Mirror the primary swap logical volume:
lvextend -m 1 /dev/vg00/prswaplv /dev/dsk/c0t3d0
#
Verify that the boot information contained in the BDRA of the boot disks in the root volume group has been automatically updated by lvlnboot(1M) with the locations of the mirror copies of root and primary swap:
lvlnboot -v
but when i run the command i get this error
lvextend -m l /dev/vg00/lvol2 /dev/dsk/c2t1d0
Usage: lvextend
[-A Autobackup]
{-l LogicalExtentsNumber |
-L LogicalVolumeSize}
LogicalVolumePath [ PhysicalVolumePath... | PhysicalVolumeGroupName... ]
"m": Illegal option.
any ideas