[Ocfs2-users] another node is heartbeating in our slot!

[Patrick Donker]

Interestingly enough this works! :)
Wouldnt this result in loss of performance though?

Alexei Roudnev wrote:
>  What if they mount the same drive on iSCSI server but using iSCSI to itself
> (so it will work as both, server and client, at the same time)?
> It should work fine.
>
>
> ----- Original Message ----- 
> From: "Mark Fasheh" <mark.fasheh at oracle.com>
> To: "Patrick Donker" <padonker at technoware.nl>
> Cc: <ocfs2-users at oss.oracle.com>
> Sent: Monday, December 18, 2006 10:10 PM
> Subject: Re: [Ocfs2-users] another node is heartbeating in our slot!
>
>
>   
>> On Mon, Dec 18, 2006 at 11:39:49PM +0100, Patrick Donker wrote:
>>     
>>> Now, as soon as I mount /dev/sdb on 'san' itself, I get the 'another
>>>       
> node is
>   
>>> heartbeating in our slot!' message, and the system fences all nodes,
>>>       
> which
>   
>>> results in kernel panics. Apparently 'san' is trying to heartbeat on
>>>       
> slot 0,
>   
>>> which already is occupied by 'mail'. Looking at the cluster.conf, 'san'
>>>       
> should
>   
>>> select slot 1. How come it is trying to use 0 then?
>>> Am I correct in assuming that I cannot mount the ocfs2 fs on the system
>>>       
> which
>   
>>> is running the cluster???
>>>       
>> Yes. The node you export the iscsi drive (your iscsi target, or 'san' in
>> this example) can not run ocfs2 on that drive alongside other nodes who
>>     
> have
>   
>> it mounted via the iscsi client. This is a limitation in that the iscsi
>> target does not share the same pages against the iscsi device and the
>>     
> block
>   
>> device.
>>
>> So basically, the machine which runs the iscsi target software cannot also
>> run the file system. All nodes mounting it via the iscsi client should
>>     
> work
>   
>> fine. For what it's worth, mounting on the iscsi target alongside iscsi
>> targets won't work with _any_ shared disk cluster file system.
>> --Mark
>>
>> --
>> Mark Fasheh
>> Senior Software Developer, Oracle
>> mark.fasheh at oracle.com
>>
>> _______________________________________________
>> Ocfs2-users mailing list
>> Ocfs2-users at oss.oracle.com
>> http://oss.oracle.com/mailman/listinfo/ocfs2-users
>>
>>     
>
>