Re: [ovirt-users] ovirt with glusterfs - big test - unwanted results

Hello, we tried the following test - with unwanted results input: 5 node gluster A = replica 3 with arbiter 1 ( node1+node2+arbiter on node 5 ) B = replica 3 with arbiter 1 ( node3+node4+arbiter on node 5 ) C = distributed replica 3 arbiter 1 ( node1+node2, node3+node4, each arbiter on node 5) node 5 has only arbiter replica ( 4x ) TEST: 1) directly reboot one node - OK ( is not important which ( data node or arbiter node )) 2) directly reboot two nodes - OK ( if nodes are not from the same replica ) 3) directly reboot three nodes - yes, this is the main problem and a questions .... - rebooted all three nodes from replica "B" ( not so possible, but who knows ... ) - all VMs with data on this replica was paused ( no data access ) - OK - all VMs running on replica "B" nodes lost ( started manually, later )( datas on other replicas ) - acceptable BUT - !!! all oVIrt domains went down !! - master domain is on replica "A" which lost only one member from three !!! so we are not expecting that all domain will go down, especially master with 2 live members. Results: - the whole cluster unreachable until at all domains up - depent of all nodes up !!! - all paused VMs started back - OK - rest of all VMs rebooted and runnig - OK Questions: 1) why all domains down if master domain ( on replica "A" ) has two runnig members ( 2 of 3 ) ?? 2) how to fix that colaps without waiting to all nodes up ? ( in worste case if node has HW error eg. ) ?? 3) which oVirt cluster policy can prevent that situation ?? ( if any ) regs. Pavel _______________________________________________ Users mailing list Users(a)ovirt.org http://lists.ovirt.org/mailman/listinfo/users