The present issue is that , i have to delete an ASM disk from the ASM storage. The disk is already marked as ASM disk and when i try to unmark it for ASM disk, it throws an error. So i cant delete the OS disk without deleting it from the ASM disks.
Present issue occured in 11gR2 RAC on linux and we are using multi path ASM disks for the storage.
So i verified the log file /var/log/oracleasm and the content of the log file shows me the following error
I tried creating a diskgroup with this ASM disk and droped it and then tried to delete the ASM disk, but no use.
I verified with the following command if the disk is still marked as ASM disk or not. It is still marked as ASM disk.
Then i tried clearing the disk with the OS command dd.
Now i am able to successfully delete the disk from ASM disk list.
On all other nodes in the RAC , do the following to sync
Content from the log file /var/log/oracleasm now shows ...
Hope it helps