Redhat 下ASM 11.2.0.1 oracleasm deletedisk - Clearing disk header failed 的解决方法

在虚拟机上搭建Oracle 11gR2 的RAC。 安装Clusterware的时候出了一点错误。 所以强行把Clusterware 给删除了。 清除了相关的目录和文件。 因为11gr2 的OCR是存放在ASM上的，所以需要清除这部分信息。

[root@rac2 ~]# oracleasm listdisks

CRS

DATA

FRA

[root@rac2 ~]# oracleasm deletedisk CRS

Clearing disk header: failed

Unable to clear disk "CRS"

[root@rac2 ~]# oracleasm scandisks

Reloading disk partitions: done

Cleaning any stale ASM disks...

Scanning system for ASM disks...

[root@rac2 ~]# oracleasm listdisks

CRS

DATA

FRA



可是删除报Clearing disk header: failed错误。 尝试把另一个节点的ASM 停止掉删除，还是不行。



看了一下oracleasm的log：

[root@rac1 mapper]# tail -20 /var/log/oracleasm

Cleaning disk "DATA"

Validating disk "FRA"

Unmounting ASMlib driver filesystem: /dev/oracleasm

Unloading module "oracleasm": oracleasm

Disk "CRS" does not exist or is not instantiated

Clearing disk header: done

Loading module "oracleasm": oracleasm

Mounting ASMlib driver filesystem: /dev/oracleasm

Reloading disk partitions: done

Cleaning any stale ASM disks...

Scanning system for ASM disks...

Disk "FRA" does not exist or is not instantiated

Instantiating disk "FRA"

oracleasm-read-label: Unable to read device "/dev/sdb": Input/output error

oracleasm-read-label: Unable to read device "/dev/sdf": Input/output error

Disk "DATA" does not exist or is not instantiated

Instantiating disk "DATA"

oracleasm-read-label: Unable to read device "/dev/sdd": Input/output error

Disk "FRA" is a valid ASM disk

Disk "DATA" is a valid ASM disk

google了一下。 在Oracle 论坛上找到了解决方法：



http://forums.oracle.com/forums/thread.jspa?threadID=969534



Same problem with 11.2.0.1 on x86-64 RH Linux 5.4.

Had to :

1. shutdown CRS on all nodes of the cluster (# ./crsctl stop crs)

2. disable CRS from starting on reboot (# ./crsctl disable crs)

3. Reboot all the servers (# shutdown -r now)

4. After reboot, stop ASMLIB (# service oracleasm stop)

5. Remove the disk using physical name rather than logical name (service oracleasm deletedisk /dev/mapper/mpath01p1)

6. Restart ASMLIB (# service oracleasm start)

7. Enable CRS on re-boot (# ./crsctl disable crs)



因为我之前的Cluster已经删除，所以直接停ASM server。 删除就可以了。

[root@rac1 mapper]# service oracleasm stop

Dropping Oracle ASMLib disks: [ OK ]

Shutting down the Oracle ASMLib driver: [ OK ]

[root@rac1 mapper]# ls

control crs crsp1 data datap1 fra frap1

[root@rac1 mapper]# service oracleasm deletedisk /dev/mapper/crsp1

Removing ASM disk "/dev/mapper/crsp1": [ OK ]

[root@rac1 mapper]# service oracleasm start

Initializing the Oracle ASMLib driver: [ OK ]

Scanning the system for Oracle ASMLib disks: [ OK ]

[root@rac1 mapper]# oracleasm listdisks

DATA

FRA



搞定。 到另一个节点查看：



[root@rac2 ~]# oracleasm listdisks

CRS

DATA

FRA

[root@rac2 ~]# oracleasm scandisks

Reloading disk partitions: done

Cleaning any stale ASM disks...

Cleaning disk "CRS"

Scanning system for ASM disks...

[root@rac2 ~]# oracleasm listdisks

DATA

FRA



也同步了。 看来ASM 11在Linux 5.4 上还是有点问题。



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