[Linux-cluster] Maximum number of nodes

[Steven Whitehouse]

Hi,

On Fri, 2010-05-07 at 20:00 -0700, Celso K. Webber wrote:
> Hi Steve,
> I believe the 16 node is a limit of qdiskd only, isn't it? CMAN node
limit can be much higher, I believe. I don't know about GFS/GFS2 node
limits, on the other hand.
> 
> 
As per the original message, the limit is down to the number of nodes we
can reasonably test and not any limit of the actual software. Much
larger clusters are possible, but are not supported via RHEL.

Having said that, I'm not a qdisk expert and other limits may apply to
that specifically.

Steve.


> >From the Cluster FAQ at http://sources.redhat.com/cluster/wiki/FAQ/CMAN:
> 
> "Is quorum disk/partition reserved for two-node clusters, and if not, how many nodes can it support?Currently a quorum disk/partition may be used in clusters of up to 16 nodes."
> 
> Regards,
> 
> Celso.
> 
> 
> ----- Original Message ----
> From: Steven Whitehouse <swhiteho at redhat.com>
> To: linux clustering <linux-cluster at redhat.com>
> Sent: Tue, May 4, 2010 12:55:38 PM
> Subject: Re: [Linux-cluster] Maximum number of nodes
> 
> Hi,
> 
> On Fri, 2010-04-30 at 14:37 -0500, Dusty wrote:
> > Hello,
> > 
> > Regarding the component versions of "Redhat Cluster Suite" as released
> > on the 5.4 and 5.5 ISOs...:
> > 
> > What is the maximum number of nodes that will work within a single
> > cluster? 
> > 
> The limit is 16 nodes.
> 
> > From where do the limitations come? GFS2? Qdisk? What if not using
> > qdisk? What if not using GFS2?
> > 
> > Thank you!
> The limit is down to what we can reasonably test, and thus what is
> supported. The theoretical limit is much higher and it may be possible
> to raise the supported node limits in future,
> 
> Steve.
> 
> 
>       
> 
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