安装GI弹不出磁盘问题-重庆思庄_Oracle数据库服务,OCP认证培训 ,红帽RHCE培训班

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安装GI弹不出磁盘问题

发布时间：2021-10-17

创建ASM磁盘时，出现以下异常

[root@hisdb1 ~]# oracleasm createdisk DATA02 /dev/mapper/mpatha
Device "/dev/mapper/mpatha" is already labeled for ASM disk ""
[root@hisdb1 ~]# 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@hisdb1 etc]# oracleasmrenamedisk -f /dev/mapper/mpatha DATA02

[root@hisdb1 mapper]# oracleasm renamedisk -f /dev/mapper/mpathbVOTEDATA01

[root@hisdb1 mapper]# oracleasm renamedisk -f /dev/mapper/mpathcVOTEDATA02

[root@hisdb1 mapper]# oracleasm renamedisk -f /dev/mapper/mpathdVOTEDATA03

[root@hisdb1 mapper]# oracleasm renamedisk -f /dev/mapper/mpatheVOTEDATA04

[root@hisdb1 mapper]# oracleasmrenamedisk -f /dev/mapper/mpathg VOTEDATA05

[root@hisdb1 mapper]# oracleasm scandisks

Reloading disk partitions: done

Cleaning any stale ASM disks...

Scanning system for ASM disks...

[root@hisdb1 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

ddif=/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

oracleasmcreatedisk VOTEDATA05 /dev/mapper/mpathg

重新创建GI，此问题不再发生.