Unmirror rootvg (Root Volume Group) in AIX Unmirror rootvg （根卷组）中的AIX

Root Volume Group (rootvg) is a volume group containing the Base Operating System (BOS).根卷组（ rootvg ）是一个卷组包含相应的作业系统（转炉） 。 Logical volume (lv) in rootvg may be doubled or more in copies with 2 or more physical volume (hard disk) for availability and reliability of the AIX system.逻辑卷（ LV ）号在rootvg可能增加一倍或更多的副本2或更多的物理卷（硬盘）的可用性和可靠性的AIX系统。 The following steps are to unmirror a rootvg, if for whatever reason the rootvg needs to run on single logical volume (lv) on single physical volume (pv) only.下面的步骤是unmirror 1 rootvg ，如果以任何理由需要的rootvg上运行单一的逻辑卷（ LV ）号单物理卷（病菌）只。

Check and Determine if rootvg is Mirrored 检查并确定是否是镜像rootvg

In mirror mode, each logical volume in rootvg such as filesystems “/”, “/usr”, “/var”, “/tmp”, “/home”, “/opt” and default boot, paging and jfslog LVs should be mirrored.在镜像模式下，每个逻辑卷在rootvg如文件“ / ” ， “是/ usr ” ， “ /无功” ， “ / tmp的” ， “ /家庭” ， “ /选择” ，并默认开机，传呼及jfslog内径应镜像。 In AIX, mirrorvg will create additional copy of image for all logical volumes in the volume group.在AIX操作系统， mirrorvg将创造更多的副本，图像的所有逻辑卷的卷组。

Use the following command to check if a rootvg is mirrored:使用下面的命令来检查，如果rootvg镜像：

# lsvg -l rootvg ＃ lsvg - 1 rootvg

If the output shows that for each LP there are 2 PPs then its mirrored.如果输出表明，每罐有2个结那么它的镜像。

Check and Determine Which Disks the Mirrored rootvg is Located 检查并确定哪个磁盘的镜像rootvg位于

For each logical volume (LV) name listed in output of “lsvg -l rootvg” command, run the following command:对于每个逻辑卷（ LV ）号的名字列在输出的“ lsvg - 1 rootvg ”命令，运行下面的命令：

lslv -m lslv米

The output date will tell you on which disk each copy of each logical partitions for each LV.输出的日期会告诉你，这盘每份每个逻辑分区，每个吕。

Unmirror rootvg Unmirror rootvg

Important: The following instructions have the risk of making your AIX system unbootable or corrupting the data.重要事项：下列指示的风险，让您的AIX系统无法启动或破坏数据。 So make you have advanced system administration experience before running the process of unmirroring.因此，使你拥有先进的系统管理经验，在运行的过程中unmirroring 。

To unmirror the root volume group (rootvg), follow the steps below (scenario: rootvg is contained on hdisk01 and mirrored onto hdisk11, and the steps will remove the mirror on hdisk11 (regardless of the disk from which you previously booted)):为了unmirror根卷组（ rootvg ） ，按照以下步骤（情景： rootvg上载hdisk01和镜像到hdisk11和步骤将删除镜子上hdisk11 （不论磁盘，您以前开机） ） ：

1. To unmirror the rootvg from hdisk11, enter the following command:为了unmirror的rootvg从hdisk11 ，输入下面的命令：

   unmirrorvg rootvg hdisk11 unmirrorvg rootvg hdisk11

   This command turns quorum back on for rootvg.此命令将返回法定人数为rootvg 。 When unmirrorvg is executed, the default COPIES value for each logical volume becomes 1.当unmirrorvg执行，默认COPIES价值为每个逻辑卷成为1 。

2. To update the booted disk link, enter the following command:要更新启动磁盘链接，输入下面的命令：

   ln -f /dev/rhdisk01 /dev/ipldevice肾炎口/ dev/rhdisk01的/ dev / ipldevice

3. To reduce the disk out of rootvg, type the following command:为了减少磁盘的rootvg ，键入以下命令：

   reducevg rootvg hdisk11 reducevg rootvg hdisk11

4. To initilize the boot record of the remaining disk again, enter the following command:为了initilize的引导记录剩余的磁盘再次，输入下面的命令：

   bosboot -a -d /dev/hdisk01 bosboot - A至D / dev/hdisk01

   bosboot command is a must to initialize the boot record on the remaining disk hdisk01 again. bosboot命令是一个必须初始化开机记录对其余的磁盘hdisk01一次。

5. To modify the boot list to remove the unmirrored disk, type the following command:如果要修改开机清单中删除unmirrored磁盘，键入以下命令：

   bootlist -m normal hdisk01 bootlist米正常hdisk01

   bootlist command is a must so that the system only boots to the disk remaining (hdisk01) in rootvg. bootlist命令是必须的，以便该系统只靴子磁盘剩余（ hdisk01 ）在rootvg 。

6. Restart AIX machine, as unmirroring turns quorum back on for rootvg, a reboot is required for this to take effect. AIX操作系统重新启动机器，因为unmirroring轮流回到法定人数为rootvg ，重新开机需要这个才能生效。

Note: The reducevg command in step 3 will fail if there are non-mirrored logical volumes such as raw logical volumes and system dump devices on the disk.注： reducevg命令第3步中会失败，如果有非镜像逻辑卷等为原料，逻辑卷和系统转储设备在磁盘上。

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