[Ocfs2-users] Kernel Panic, Server not coming back up

[Sunil Mushran]

That's fine. The nodes can mount a volume ro or rw. It does not
matter.

kevin at utahsysadmin.com wrote:
> I have two partitions with OCFS2 on the same cluster.  On two of the nodes
> I have mounted one of the partitions read-only:
>
> /dev/sdc1 on /logs type ocfs2 (rw,_netdev,noatime,heartbeat=local)
> /dev/sdb1 on /data type ocfs2 (ro,_netdev,noatime,heartbeat=local)
>
> On the admin node, I have them both mounted read-write:
>
> /dev/sdb1 on /data type ocfs2 (rw,_netdev,noatime,heartbeat=local)
> /dev/sdc1 on /logs type ocfs2 (rw,_netdev,noatime,heartbeat=local)
>
> My concern was with writing status files for the other nodes to see.  If
> the partition was mounted read-only, would that cause another node to think
> that the read-only node has failed?
>
> Thanks,
>
> Kevin
>
> On Mon, 05 Apr 2010 14:03:52 -0700, Sunil Mushran
> <sunil.mushran at oracle.com> wrote:
>   
>> ocfs2 can handle multiple writers to the same file.
>>
>> Cannot say whether it is due to the io load. All I can say
>> is that it is an io error.
>>
>> Unsure what /data partitions are.
>>
>> Sunil
>>
>> kevin at utahsysadmin.com wrote:
>>     
>>> Sunil,
>>>
>>> Thanks for the response.  Could this be triggered by both servers trying
>>>       
>> to
>>     
>>> write to the same log file at the same time or can OCFS2 handle that
>>> situation?  Or is this simply that the VMWare software is not able to
>>> handle the amount of IO?  I don't think these servers are under a lot of
>>> load.
>>>
>>> I also forgot to mention that on nodes 1 & 2, I have the /data
>>>       
>> partitions
>>     
>>> mounted read only.  Will that cause any problems?
>>>
>>> Thanks for your time.
>>>
>>> Kevin
>>>   
>>>       
>
>