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在小机P系列中，系统如果内置两个硬盘，则可以利用这两个硬盘，将一个rootvg做一个镜像，当一个硬盘产生错误的时候，可以用镜像盘启动，以保持系统高可用性。
AIX 5.3 PV: hdisk0, hdisk13
Info before mirrorvg
[root@rs6000 ~]#lsvg -p rootvg
rootvg:
PV_NAME PV STATE TOTAL PPs FREE PPs FREE DISTRIBUTION
hdisk0 active 542 236 107..00..00..20..109
[root@rs6000 ~]#lsvg -l rootvg
rootvg:
LV NAME TYPE LPs PPs PVs LV STATE MOUNT POINT
hd5 boot 1 1 1 closed/syncd N/A
hd6 paging 16 16 1 open/syncd N/A
hd8 jfslog 1 1 1 open/syncd N/A
hd4 jfs 1 1 1 open/syncd /
hd2 jfs 96 96 1 open/syncd /usr
hd9var jfs 4 4 1 open/syncd /var
hd3 jfs 5 5 1 open/syncd /tmp
hd1 jfs 174 174 1 open/syncd /home
hd10opt jfs 7 7 1 open/syncd /opt
lv00 jfs 1 1 1 open/syncd /var/adm/csd |
Add a PV to rootvg
| [root@rs6000 ~]#extendvg rootvg hdisk13 |
Disable quorum on single mirror
| [root@rs6000 ~]##chvg -Qn rootvg |
Mirrorvg on rootvg
[root@rs6000 ~]#mirrorvg -s rootvg
0516-1804 chvg: The quorum change takes effect immediately. 0516-1126 mirrorvg: rootvg successfully mirrored, user should perform bosboot of system to initialize boot records. Then, user must modify bootlist to include: hdisk0 hdisk13. |
Sync rootvg manually (time token depend on the size of the rootvg)
| [root@rs6000 ~]#syncvg -v rootvg |
Perform bosboot
| [root@rs6000 ~]#bosboot -a |
Modify bootlist
[root@rs6000 ~]#bootlist -m normal hdisk0 hdisk13
[root@rs6000 ~]#bootlist -m normal -o
hdisk0 blv=hd5
hdisk13 blv=hd5 |
Info after mirror
[root@rs6000 ~]#lsvg -p rootvg
rootvg:
PV_NAME PV STATE TOTAL PPs FREE PPs FREE DISTRIBUTION
hdisk0 active 542 236 107..00..00..20..109
hdisk13 active 319 13 00..00..00..00..13
[root@rs6000 ~]#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 16 32 2 open/syncd N/A
hd8 jfslog 1 2 2 open/syncd N/A
hd4 jfs 1 2 2 open/syncd /
hd2 jfs 96 192 2 open/syncd /usr
hd9var jfs 4 8 2 open/syncd /var
hd3 jfs 5 10 2 open/syncd /tmp
hd1 jfs 174 348 2 open/syncd /home
hd10opt jfs 7 14 2 open/syncd /opt
lv00 jfs 1 2 2 open/syncd /var/adm/csd |
- Unmirrorvg Info before unmirrorvg
[root@rs6000 ~]#lsvg -p rootvg
rootvg:
PV_NAME PV STATE TOTAL PPs FREE PPs FREE DISTRIBUTION
hdisk0 active 542 236 107..00..00..20..109
hdisk13 active 319 13 00..00..00..00..13
[root@rs6000 ~]#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 16 32 2 open/syncd N/A
hd8 jfslog 1 2 2 open/syncd N/A
hd4 jfs 1 2 2 open/syncd /
hd2 jfs 96 192 2 open/syncd /usr
hd9var jfs 4 8 2 open/syncd /var
hd3 jfs 5 10 2 open/syncd /tmp
hd1 jfs 174 348 2 open/syncd /home
hd10opt jfs 7 14 2 open/syncd /opt
lv00 jfs 1 2 2 open/syncd /var/adm/csd |
Exec unmirrorvg
[root@rs6000 ~]#unmirrorvg rootvg hdisk13
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: hdisk0. |
Clear the boot record (carefull ,unneeded PV)
| [root@rs6000 ~]#chpv -c hdisk13 |
Reinitialize boot records
[root@rs6000 ~]#bosboot -a -d hdisk0
bosboot: Boot image is 35985 512 byte blocks. |
Modify bootlist
[root@rs6000 ~]#bootlist -m normal hdisk0
[root@rs6000 ~]#bootlist -m normal -o
hdisk0 blv=hd5 |
RSeduce the PV from rootvg
| [root@rs6000 ~]#reducevg rootvg hdisk13 |
Info after unmirror
[root@rs6000 ~]#lsvg -p rootvg
rootvg:
PV_NAME PV STATE TOTAL PPs FREE PPs FREE DISTRIBUTION
hdisk0 active 542 236 107..00..00..20..109
[root@rs6000 ~]#lsvg -l rootvg
rootvg:
LV NAME TYPE LPs PPs PVs LV STATE MOUNT POINT
hd5 boot 1 1 1 closed/syncd N/A
hd6 paging 16 16 1 open/syncd N/A
hd8 jfslog 1 1 1 open/syncd N/A
hd4 jfs 1 1 1 open/syncd /
hd2 jfs 96 96 1 open/syncd /usr
hd9var jfs 4 4 1 open/syncd /var
hd3 jfs 5 5 1 open/syncd /tmp
hd1 jfs 174 174 1 open/syncd /home
hd10opt jfs 7 7 1 open/syncd /opt
lv00 jfs 1 1 1 open/syncd /var/adm/csd |
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