True. Anyways. Thanks for your help. Regards, Chaitanya <div class="gmail_quote">On Mon, Mar 16, 2009 at 2:07 PM, Chrissie Caulfield <<a href="mailto:ccaulfie@redhat.com">ccaulfie@redhat.com</a>> wrote: <blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;"><div class="im">Chaitanya Kulkarni wrote: > Thanks for your reply Chrissie. > > But is this, i.e. deployment of clusters with same name, a valid > scenario? How often (as in say 1 in a 100) may I see such deployments, > if at all? > </div>Sorry, I really have no idea how many times you might see such deployments. How would I work it out?! Cluster names are chosen by the administrators ... those people are not easily predictable ;-) Chrissie <div class="im"> > > On Mon, Mar 16, 2009 at 1:28 PM, Chrissie Caulfield <<a href="mailto:ccaulfie@redhat.com">ccaulfie@redhat.com</a> </div><div><div></div><div class="h5">> <mailto:<a href="mailto:ccaulfie@redhat.com">ccaulfie@redhat.com</a>>> wrote: > > Chaitanya Kulkarni wrote: > > Hi All, > > > > What happens if in the same network, we try to create two clusters > with > > the same name? > > > > Does it cause any problem? > > YES LOTS! > > At best the two clusters will merge into one, at worst you will get node > evictions because of clashes between node IDs > > Actually you *can* do this if you change the cluster_id/multicast > address or port number in cluster.conf. But need to be careful and it is > not recommended. > > The main reason I say not to do this is that GFS volumes have the > cluster name embedded in the super block. If you have two clusters with > the same cluster name on the same SAN then it's going to be very easy to > totally corrupt the GFS filesystem by mounting it on two different > clusters. > > > Chrissie > -- Linux-cluster mailing list <a href="mailto:Linux-cluster@redhat.com">Linux-cluster@redhat.com</a> <a href="https://www.redhat.com/mailman/listinfo/linux-cluster" target="_blank">https://www.redhat.com/mailman/listinfo/linux-cluster</a> </div></div></blockquote></div>