创建ASM磁盘时，出现

[root@hisdbserver ~]# oracleasm createdisk DATA02 /dev/mapper/mpatha

Device "/dev/mapper/mpatha" is already labeled for ASM disk ""

[root@hisdbserver ~]# oracleasm createdisk VOTEDATA01 /dev/mapper/mpathb

Device "/dev/mapper/mpathb" is already labeled for ASM disk ""

最初的解决方案是通过rename来创建DATA02以及5块投票盘，如下操作：

[root@hisdbserver etc]# oracleasm renamedisk -f /dev/mapper/mpatha DATA02

[root@hisdbserver mapper]# oracleasm renamedisk -f /dev/mapper/mpathb VOTEDATA01

[root@hisdbserver mapper]# oracleasm renamedisk -f /dev/mapper/mpathc VOTEDATA02

[root@hisdbserver mapper]# oracleasm renamedisk -f /dev/mapper/mpathd VOTEDATA03

[root@hisdbserver mapper]# oracleasm renamedisk -f /dev/mapper/mpathe VOTEDATA04

[root@hisdbserver mapper]# oracleasm renamedisk -f /dev/mapper/mpathg VOTEDATA05

[root@hisdbserver mapper]# oracleasm scandisks

Reloading disk partitions: done

Cleaning any stale ASM disks...

Scanning system for ASM disks...

[root@hisdbserver mapper]# oracleasm listdisks

DATA01

DATA02

VOTEDATA01

VOTEDATA02

​VOTEDATA03

VOTEDATA04​

VOTEDATA05

注意虽然此处显示创建OK，但当我们图形界面创建GI到第9步时，弹不出磁盘.

异常原因：未对磁盘进行分区.

处理方案：

a、对所有磁盘进行dd处理

dd if=/dev/zero of=/dev/mapper/mpathb bs=4096 count=256

dd if=/dev/zero of=/dev/mapper/mpathc bs=4096 count=256

dd if=/dev/zero of=/dev/mapper/mpathd bs=4096 count=256

dd if=/dev/zero of=/dev/mapper/mpathe bs=4096 count=256

dd if=/dev/zero of=/dev/mapper/mpathg bs=4096 count=256

dd if=/dev/zero of=/dev/mapper/mpatha bs=4096 count=256

dd if=/dev/zero of=/dev/mapper/mpathf1 bs=4096 count=256

b、将磁盘做分区处理，依次按以下图片中的步骤执行分区.

分完区后注意需要partprobe

c、重新创建磁盘

oracleasm createdisk DATA01 /dev/mapper/mpathf1

oracleasm createdisk DATA02 /dev/mapper/mpatha

oracleasm createdisk VOTEDATA01 /dev/mapper/mpathb

oracleasm createdisk VOTEDATA02 /dev/mapper/mpathc

oracleasm createdisk VOTEDATA03 /dev/mapper/mpathd

oracleasm createdisk VOTEDATA04 /dev/mapper/mpathe

oracleasm createdisk VOTEDATA05 /dev/mapper/mpathg

重新创建GI，此问题不再发生.