> On 27 Mar 2015, at 3:19 am, Christine Caulfield <ccaulfie@xxxxxxxxxx> wrote: > > On 26/03/15 10:36, Christine Caulfield wrote: >> On 25/03/15 01:24, Steven Dake wrote: >>> I think if you dont care about performance, We care about performance in that we don't want the same characteristics that totem currently suffers from. Surely an essential part of being able to scale is caring about performance? >>> you can have a daemon >>> process (second process) connect as a cpg service and maintain an >>> overlay network on top of CPG. Then many other external endpoints could >>> connect to this server over TCP. >> >> That's an interesting idea that I quite like. And it might be nice and >> easy to get a proof-of-concept up and running. >> >> It would probably require a different API to the normal corosync one >> (I'm not sure that emulating libcpg etc for a different daemon would be >> sensible). >> >> How does that sound to the Pacemaker team? >> > > > I've been thinking about Steven Dake's idea most of today and I really > like it. It's clean, doesn't interfere with corosync internals and will > be easier to implement and maintain. Also it won't break the on-wire > protocol. > > The one main drawback I see is that the CPG membership will not include > the satellite nodes (unless the parent joins the CPG once for each > parent, which seems excessive). Looking at the pacemaker code this > doesn't seem to be a problem. We can still send node up/down > notifications if needed, even if a satellite joins the cluster, it would > just show the same list of central nodes each time. How would we find out who the list of satellite nodes is? > > I'm less worried about the performance hit for this sort of > implementation though it does need to be borne in mind. I'll forward an > updated document early next week for perusal if David or Andrew chip in > about Pacemaker requirements above. > > thoughts? > > Chrissie > > _______________________________________________ > discuss mailing list > discuss@xxxxxxxxxxxx > http://lists.corosync.org/mailman/listinfo/discuss _______________________________________________ discuss mailing list discuss@xxxxxxxxxxxx http://lists.corosync.org/mailman/listinfo/discuss
