To remove redundancy to the root volume group, remove the mirror of the root volume group. For a root volume group that is under DMP control, use the operating system commands to remove the mirror.
To unmirror the root volume group
# lsvg -p rootvg rootvg: PV_NAME PV STATE TOTAL PPs FREE PPs FREE DISTRIBUTION hdisk70 active 639 361 127..05..00..101..128 hdisk73 active 639 639 128..128..127..128..128
# lspv | grep -w rootvg hdisk70 00f60bfea7406c01 rootvg active hdisk72 00f60bfea7406c01 rootvg active hdisk73 00f60bfe000d0356 rootvg active hdisk74 00f60bfe000d0356 rootvg active
# unmirrorvg rootvg 0516-1246 rmlvcopy: If hd5 is the boot logical volume, please run 'chpv -c <diskname>' as root user to clear the boot record and avoid a potential boot off an old boot image that may reside on the disk from which this logical volume is moved/removed. 0516-1804 chvg: The quorum change takes effect immediately. 0516-1144 unmirrorvg: rootvg successfully unmirrored, user should perform bosboot of system to reinitialize boot records. Then, user must modify bootlist to just include: hdisk70.
# chpv -c hdisk74
# chpv -c hdisk73
# bootlist -m normal -o hdisk70 blv=hd5 hdisk72 blv=hd5 hdisk73 blv=hd5 hdisk74 blv=hd5
# bootlist -m normal hdisk70 hdisk72 blv=hd5
# bootlist -m normal -o hdisk70 blv=hd5 hdisk72 blv=hd5
/dev/ipldevice
, then retry the command on the paths of current boot disk until it succeeds.# bosboot -ad /dev/ipldevice A previous bosdebug command has changed characteristics of this boot image. Use bosdebug -L to display what these changes are. bosboot: Boot image is 56863 512 byte blocks.
# lspv | grep -w rootvg hdisk70 00f60bfea7406c01 rootvg active hdisk72 00f60bfea7406c01 rootvg active
# lsvg -p rootvg rootvg: PV_NAME PV STATE TOTAL PPs FREE PPs FREE DISTRIBUTION hdisk70 active 639 361 127..05..00..101..128