以下命令全部在AIX5.4上运行通过

# lspv
hdisk0 000a1ddc7f36a2f0 rootvg active
hdisk1 none None

#chdev -l hdisk1 -a pv=clear
#chdev -l hdisk1 -a pv=yes
hdisk1 changed

# lspv
hdisk0 000a1ddc7f36a2f0 rootvg active
hdisk1 000a1ddcd9e3cc9e None

#extendvg rootvg hdisk1 //如果hdisk1内有数据在做extend的时侯hdisk1里面的数据就没了
#extendvg -f rootvg hdisk1 //强制把hdisk1加入到rootvg中

#lspv
hdisk0 000a1ddc7f36a2f0 rootvg active
hdisk1 000a1ddcd9e3cc9e rootvg active

#mirrorvg rootvg hdisk1
#mirrorvg rootvg
0516-1124 mirrorvg: Quorum requirement turned off, reboot system for this
to take effect for rootvg.
0516-1126 mirrorvg: rootvg successfully mirrored, user should perform
bosboot of system to initialize boot records. Then, user must modify
bootlist to include: hdisk0 hdisk1.

//查看mirror是否完成了
//如何查看硬盘是否做过mirror?
#lsvg -l rootvg
rootvg:
LV NAME TYPE LPs PPs PVs LV STATE MOUNT POINT
hd5 boot 1 2 2 closed/syncd N/A
hd6 paging 2 4 2 open/syncd N/A
hd8 jfslog 1 2 2 open/syncd N/A
hd4 jfs 1 2 2 open/syncd /
hd2 jfs 33 66 2 open/syncd /usr
hd9var jfs 1