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Re: [Cluster-devel] fence daemon problems



On 10/03/2012 12:44 PM, David Teigland wrote:
You might be able to assign
different numbers of votes to reduce the likelihood of everyone loosing
quorum.


(Late to thread - here's an example of what David is talking about):

Node   Votes
-----  -----
node1  1
node2  2
node3  3
node4  5

Total: 11

Quorate 2-node partition:
 - node1 node4  (6 votes / 11)
 - node2 node4  (7 / 11)
 - node3 node4  (8 / 11)

Inquore 2-node partition:
 - node1 node2  (3 / 11)
 - node1 node3  (4 / 11)
 - node2 node3  (5 / 11)

Effectively, no matter how a 2:2 partition occurs in this configuration, one partition will always have quorum (and thus be able to fence). Like a normal 4-node cluster, one node can always fail while the other 3 nodes remain quorate.

-- Lon


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