[Ocfs2-devel] Global heartbeat - drop#1

[Wengang Wang]

On 10-07-29 10:28, Sunil Mushran wrote:
> On 07/28/2010 08:08 PM, Wengang Wang wrote:
> >
> >>One case I can see happening is if the journal op fail (say commit
> >>triggered by downconvert). In that case, the fs will fence the box.
> >>
> >>Do you have a specific example?
> >I have no good example, but just thinking about this case:
> >
> >A two nodes HA cluster, node A is active and node B is backup.
> >If the non-hb device fails on node A, since no failover will happen in this
> >case, the app will keep getting the EIOs on the active node. User maybe
> >complain with that? With lhb, node A will be restarted and failover will happen
> >so that user app won't keep getting EIOs.
> >
> >Or all nodes are active nodes, but they all get EIOs since no fence in this case.
> >
> >It is just a question, not a big problem for the helpful ghb :)
> >
> 
> o2hb is meant only for ocfs2. If one wants app failover, then one
> can use clusterware or rgmanager or pacemaker. Or one can hand
> craft app failover on ocfs2 using dlmfs. I know users that are doing so.

OK. thanks!

regards,
wengang.