Redhat 下ASM 11.2.0.1 oracleasm deletedisk - Clearing disk header failed 的解决方法-优快云博客

本文详细描述了如何解决在Linux环境下使用Oracle ASM时遇到的磁盘删除问题，包括停止集群服务、禁用自动启动、重启服务器、删除磁盘、重新启动ASM服务等步骤，最终成功解决问题。

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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

controlcrscrsp1datadatap1frafrap1

[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