Reconfigure LSM on ES45

[Saju a r s]

Hi ,
I want to reconfigure LSM on a ES45 simplex.I remove the mirroring of all partitions .I want to mirror the root , usr and swap also .Now these are just normal partitions.
host1:/> voldisk list
DEVICE TYPE DISK GROUP STATUS
dsk0b nopriv swap01 rootdg online
dsk0f simple - - online
dsk0g nopriv dsk0g-AdvFS rootdg online
dsk0h simple dsk0h rootdg online
dsk1c simple - - online
dsk2 sliced - - unknown
dsk3 sliced - - unknown
- - root01 rootdg failed was:dsk0a
- - root02 rootdg failed was:dsk2a
- - swap02 rootdg failed was:dsk2b
- - dsk2g-AdvFS rootdg failed was:dsk2g
host1:/> volprint -Aht
Disk group: rootdg

DG NAME NCONFIG NLOG MINORS GROUP-ID
DM NAME DEVICE TYPE PRIVLEN PUBLEN STATE
V NAME USETYPE KSTATE STATE LENGTH READPOL PREFPLEX
PL NAME VOLUME KSTATE STATE LENGTH LAYOUT NCOL/WID MODE
SD NAME PLEX DISK DISKOFFS LENGTH [COL/]OFF DEVICE MODE

dg rootdg default default 0 1159448054.1025.slee05

dm dsk0g-AdvFS dsk0g nopriv 0 4194304 -
dm dsk0h dsk0h simple 4096 0 -
dm dsk2g-AdvFS - - - - NODEVICE
dm root01 - - - - NODEVICE
dm root02 - - - - NODEVICE
dm swap01 dsk0b nopriv 0 33554432 -
dm swap02 - - - - NODEVICE

v usrvol fsgen ENABLED ACTIVE 4194304 SELECT -
pl usrvol-01 usrvol ENABLED ACTIVE 4194304 CONCAT - RW
sd dsk0g-01 usrvol-01 dsk0g-AdvFS 0 4194304 0 dsk0g ENA

How do i add dsk0a which is the root partition into the rootdg ?