Unable to remove ASM disks from ASMLIB
- From: Manmohan Jalsingh <mjalsingh@xxxxxxxxx>
- To: oracle-l@xxxxxxxxxxxxx
- Date: Tue, 26 Jan 2010 13:54:35 -0800
Hi,
Environment : ASM 11.1.0.7 on RHEL5. I am getting following error while
trying to release the disks from ASMLIB. The disks have been already dropped
from ASM diskgroup.
[root]# /etc/init.d/oracleasm deletedisk VOL0
Removing ASM disk "VOL0": [FAILED]
"Clearing disk header: oracleasm-write-label: Unable to open device
"/dev/oracleasm/disks/VOL0": Device or resource busy failed Unable to clear
disk "VOL0"
It seems that I may be hitting ASM bug 7225720 which states that some Oracle
processes may still have these devices opened. I could resolve the issue by
stopping the ASM as support has suggested, but I am hoping to find a
solution with taking outage on production server.
Martin Meyer has mentioned a workaround on his blog
http://martinmeyer.blogspot.com/2008/12/remove-asm-disk.html by creating and
dropping a junk diskgroup on the dropped disks, but it didn't work for me. I
am wondering if anyone has experienced this issue and found any other
workaround?
Thanks
Manmohan
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