[Ocfs2-users] Question about eth communication for ocfs2

Alain.Moulle Alain.Moulle at bull.net
Tue Feb 8 23:13:48 PST 2011


Hi Sunil,

yes I know about ocfs2.pcmk, but it was absolutely not working
in previous releases, so :
- is this stack ocfs2 for pacemaker maintained , supported ?
- is it really used on some customers clusters ?

Thanks
Regards
Alain

Sunil Mushran a e'crit:
> On 02/08/2011 01:32 AM, Alain.Moulle wrote:
>   
>> OK but what I wonder now is :
>> is OCFS2 really capable of fencing an adjacent node ?
>> or is it only capable of "node self-fencing" ?
>> I thought that ocfs2 was only capable of "node self-fencing" because
>> there is no configuration of any fencing device (i.e. ipmi ,etc.) in the
>> ocfs2 configuration, so a node can't fence another node as in a HA
>> software (like Cluster Suite, Pacemaker, etc.)
>>
>> So only "node self-fencing" possibility , right ?
>>
>> So, in case of linkcom breakdown, you seem to tell me that
>> only the slave node will self-fence , and we can't really know
>> which one of both nodes will self-fence as we can't know which
>> one is the slave when the linkcom breakdown happens , right ?
>>     
>
> Note that while ocfs2 comes with a default cluster stack called o2cb
> it can also be configured to work with pacemaker and cman.
>
> The previous answers were all relating to o2cb. And o2cb does not
> support configurable fencing agents.
>
> For that you'll have to use pcmk/cman. sles11, opensuse, fedora,
> debian, ubuntu ship ocfs2 with pcmk/cman.
>
>
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>
>   

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