Note: This bug is displayed in read-only format because the product is no longer active in Red Hat Bugzilla.

Bug 200872

Summary:	cman can't cope with more than 31 nodes
Product:	[Retired] Red Hat Cluster Suite	Reporter:	Christine Caulfield <ccaulfie>
Component:	cman	Assignee:	Christine Caulfield <ccaulfie>
Status:	CLOSED WONTFIX	QA Contact:	Cluster QE <mspqa-list>
Severity:	medium	Docs Contact:
Priority:	medium
Version:	4	CC:	cluster-maint
Target Milestone:	---
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2008-03-11 15:26:07 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:

Description Christine Caulfield 2006-08-01 06:37:30 UTC

Description of problem:


A couple of people on the list have seen this. cman seems to be quite happy ina
cluster of 31 nodes, but adding the 32nd causes it all to fall apart. 

According to the one detailed log I have seen, the transition master node first
falls out wih "Inconsistent cluster view". After that, the other nodes all leave
with "No response to messages".

I have not reproduced this yet (slight lack of real nodes) but I'm going to have
a good try using virtualisation.

Comment 4 Christine Caulfield 2006-10-25 13:29:22 UTC

Just fot the record we (well kevin) have managed to get 39 Xen nodes running
quite happily. So it appears there is no hard limit here at least.

Comment 5 Kiersten (Kerri) Anderson 2007-01-04 17:09:12 UTC

We haven't been able to recreate this problem on the latest code base and the
number of machines available at the time.  We have run 39 virtual nodes in a
cluster, so need help in recreating it.  Marking the bugzilla as needinfo for now.

Comment 6 Christine Caulfield 2008-03-11 15:26:07 UTC

Marking this WONTFIX. Customers who need more than 31 nodes should use gulm or
RHEL5.