[Ocfs2-users] ESX and Unbreakable 2.0 OCFS2 problem

[Sunil Mushran]

Considering o2net only cares whether it is connected to the other node
or not, it should not make a difference whether one unplugs node 0 or 
node 1.
The result should be the same. Node 1 should fence in both cases.

Do you see messages indicating that the node(s) have lost connectivity?
If so, could you share them.

It would be easiest if you could file a bug on oss.oracle.com/bugzilla with
the messages file and listing the course of events... as in, unplugged cable
on node 0 at time x, etc.

Colin.Farley at ecarecenters.com wrote:
> I'm testing a 2 node cluster in a VMWare ESX environment for use as a high
> availability FTP server to support a CRM application.  Both nodes run
> Unbreakable 2.0 x86_64.  They access a 300GB OCFS2 volume on an RDM LUN on
> an HP EVA.  All disk connectivity is fine and haven't seen any problems
> there.  The problem comes when doing some IP failover testing.  The IP
> failover is done using UCARP so to test failover I tried unplugging one
> nodes virtual network cable to see what happens.
>
> If I unplug node 1 everything is fine, node 1 eventually panics and reboots
> while node 0 chugs along fine.  The problem comes when unplugging node 0.
> When node 0 loses network connectivity it does not panic and eventually
> node 1 panics and reboots.  Is there a reason why the lower node does not
> panic if it loses network connectivity?
>
> Heartbeat thresholds are the same on each node at 31 and both nodes are set
> to reboot on panic, node0 just never panics.  All software installed are
> versions that come with Unbreakable 2.0.
>
> I didn't do the config on these boxes so the first thing I'm going to do on
> Tuesday when I work on this is rebuild both nodes from scratch but I
> figured I would ask first to see if it was an easy question for someone on
> the list to answer.
>
> Thanks,
>
> Colin Farley
> Network Administrator
> E-Care Contact Center Services
> Phone:(204) 940-6244
> Fax:(204) 940-7394
>
>
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