后记是自己加入的,前部分是整理别人的.拿出来共同学习,希望大家有好东东一同共享,共同提高
以下命令全部在AIX5.3上运行过
# lspv
hdisk0 000a1ddc7f36a2f0 rootvg active
hdisk1 none None
# chdev -l hdisk1 -a pv=yes
hdisk1 changed
# cfgmgr
# 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里面的东西就没了
# lspv
hdisk0 000a1ddc7f36a2f0 rootvg active
hdisk1 000a1ddcd9e3cc9e rootvg active
# 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
# lsvg -l rootvg
# lsvg -l rootvg //如何查看硬盘是否做过mirror?
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 2 2 open/syncd /var
hd3 jfs 1 2 2 open/syncd /tmp
hd1 jfs 1 2 2 open/syncd /home
Hd10opt jfs 4 8 2 open/syncd /opt
说明： lp=2pp 表示一份镜像，lp=pp表示没做，lp=3pp表示有二份。
lp=2pp,是指一份lp的数据，对应两份pp的数据，物理上是有2份拷贝的
# lsvg rootvg
VOLUME GROUP: rootvg VG IDENTIFIER: 000a1ddc00004c00000001197f36bcd3
VG STATE: active PP SIZE: 32 megabyte(s)
VG PERMISSION: read/write TOTAL PPs: 1084 (34688 megabytes)
MAX LVs: 256 FREE PPs: 994 (31808 megabytes)
LVs: 9 USED PPs: 90 (2880 megabytes)
OPEN LVs: 8 QUORUM: 1
TOTAL PVs: 2 VG DESCRIPTORS: 3
STALE PVs: 0 STALE PPs: 0
ACTIVE PVs: 2 AUTO ON: yes
MAX PPs per VG: 32512 0
MAX PPs per PV: 1016 MAX PVs: 32
LTG size (Dynamic): 256 kilobyte(s) AUTO SYNC: no
HOT SPARE: no BB POLICY: relocatable
说明：
QUORUM: 1 表示没有，
QUORUM: 2 表示有。
# bootlist -m normal -o
hdisk0
# bosboot -ad /dev/hdisk1
# bootlist -m normal hdisk1 hdisk0
# bootlist -m normal -o
hdisk1
hdisk0
# shutdown -Fr
说明：AIX：rootvg镜像。使两个硬盘均可启动。好处：主启动硬盘坏时，可以用另一硬盘启动机器.
注：
chdev -l hdisk1 -a pv=yes是安全的，如果它运行不成功，那创建VG肯定失败，因为mkvg就是调用的它
后记：
# unmirrorvg rootvg hdisk1//把rootvg 的mirror去掉
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.
0516-1132 unmirrorvg: Quorum requirement turned on, reboot system for this
to take effect for rootvg.
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.
# chpv -c hdisk1 //去掉hdisk1的引导信息
# reducevg rootvg hdisk1 //从rootvg中删除hdisk1
# bootlist -m normal hdisk0
注：
1、如果向unmirrorvg rootvg不指定盘是很危险的，一般不指定盘不要用此命令
后果见
http://www.loveunix.net/thread-70603-1-1.html
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本帖最后由 ewzy 于 2008-5-14 16:02 编辑 ]
