Bug 200872 - cman can't cope with more than 31 nodes
Summary: cman can't cope with more than 31 nodes
Keywords:
Status: CLOSED WONTFIX
Alias: None
Product: Red Hat Cluster Suite
Classification: Retired
Component: cman
Version: 4
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Christine Caulfield
QA Contact: Cluster QE
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2006-08-01 06:37 UTC by Christine Caulfield
Modified: 2009-04-16 20:01 UTC (History)
1 user (show)

Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Clone Of:
Environment:
Last Closed: 2008-03-11 15:26:07 UTC
Embargoed:

Attachments (Terms of Use)

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.
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