[Linux-cluster] Newbie question - why the 16 node limit on Cluster Suite and does this also apply to GFS?

[Michael Lackner]

Hello!

I'm also interested in this (just curious). When not using a quorum 
disk, but
when using GFS/GFS2, would it be possible to create a cluster with more than
16 nodes with actual releases of the cluster suite, or would the 
software not
allow it?

Maybe GFS would also refuse to create >16 journals or something?

Thanks.

Volker Dormeyer wrote:
> Hi,
>
> On Mon, Jun 21, 2010 at 02:24:15AM +0100,
> Kieran Simkin <kieran at digital-crocus.com> wrote:
>   
>> I'm new to Cluster Suite and just reading the documentation from
>> Redhat it mentions a 16 node limit - I just wondered why this limit
>> was so low, if it's likely to change anytime soon, and whether this
>> limit also applies to GFS alone?
>>     
>
> Currently, the number is limited by qdiskd, which supports 16 slots, only.
>
> Even though GFS is not limited to 16 nodes, this is what Red Hat currently
> supports.
>
> Regards,
> Volker
-- 
Michael Lackner
Chair of Information Technology, University of Leoben
IT Administration
michael.lackner at mu-leoben.at | +43 (0)3842/402-1505