[Ocfs2-users] problem stopping o2cb service on one of nodes

[Sunil Mushran]

umount is supposed to stop the heartbeat. In bz1053, ocfs2_hb_ctl was 
segfaulting.
Are you seeing any segfaults or any other errors during umount?

Also, run the following before and after umount:
$ ocfs2_hb_ctl -I -d /dev/sdX o2cb

Email me the output.

Nikola Ciprich wrote:
> Hello Tao,
> and thanks a lot for reply!
> It seems not to be the same bug, at least applying the patch didn't help.
> stopping hb using -K parameter really helps, but why doesn't this work automatically
> on umount?
> it always happens on the second node...
> I don't see any error in logs, anything.
> But the reference count always increases on mount, and doesn't decrease on umount on this node..
>
>
> On Fri, Apr 03, 2009 at 10:58:18AM +0800, Tao Ma wrote:
>   
>> Hi Nikola,
>>
>> Nikola Ciprich wrote:
>>     
>>> Hi,
>>> I'm trying ocfs2 RHEL5 distro, 2.6.29 kernel, ocfstools-1.4.1. I'm using DRBD in primary/primary mode
>>> as shared storage...
>>>
>>> I've configured the service according to quickstart document, and everything works,
>>> but when I umount fs on both nodes, stopping o2cb service on one of the nodes always
>>> fails with:
>>>
>>> [root at vbox4 sysconfig]# /etc/rc.d/init.d/o2cb stop
>>> Stopping O2CB cluster vb34: Failed
>>> Unable to stop cluster as heartbeat region still active
>>>       
>> It looks that your disk heartbeat is still there. I don't know the  
>> specific reason, maybe  
>> http://oss.oracle.com/bugzilla/show_bug.cgi?id=1053 ?
>>
>> but you can stop it manually.
>> 1.  ocfs2_hb_ctl -I -d <device>
>> or ocfs2_hb_ctl -I -u <uuid>
>> this will tell you the reference number for the hearbeat.
>> 2.  ocfs2_hb_ctl -K -d <device> <service>
>>   or  ocfs2_hb_ctl -K -u <uuid> <service>
>> this will killed the heartbeat manually.
>> service is the stack you used, and it should be "o2cb" in your case.
>>
>> btw, you can try cfs2_hb_ctl -K -u <uuid> <service> to see whether it is  
>> the same problem as bug 1053.
>>
>> Regards,
>> Tao
>>