I was in the process of replying... On Tue, Feb 26, 2013 at 6:58 PM, Vladislav Bogdanov <bub...@hoster-ok.com> wrote: > Sorry for being annoying, but... bump. > > 18.02.2013 10:18, Vladislav Bogdanov wrote: >> Hi Andrew, all, >> >> I had an idea last night, that it may be worth implementing >> fully-dynamic cluster resize support in pacemaker, utilizing >> possibilities CMAP and votequorum provide. >> >> Idea is to: >> * Do not add nodes from nodelist to CIB if their join-count in cmap is >> zero (but do not touch CIB nodes which exist in a nodelist and have zero >> join-count in cmap). >> * Install watches on a cmap nodelist.node and >> runtime.totem.pg.mrp.srp.members subtrees (cmap_track_add). >> * Add missing nodes to CIB as soon as they are both >> ** defined in a nodelist >> ** their join count becomes non-zero. >> * Remove nodes from CIB when they are removed from a nodelist. >> >> Certainly, this requires some CMAP values (especially votequorum ones >> and may be totem mode) to have some 'well-known' values, f.e. only UDPU >> mode and quorum.allow_downscale=1, that should be defined yet. >> >> May be, it also have sense to make this depend on some new CMAP >> variable, f.e. nodelist.dynamic=1. >> >> I would even try to implement this if general agreement is gained and >> nobody else wants to implement this. >> >> Can you please comment on this? >> >> Vladislav >> >> _______________________________________________ >> Pacemaker mailing list: Pacemaker@oss.clusterlabs.org >> http://oss.clusterlabs.org/mailman/listinfo/pacemaker >> >> Project Home: http://www.clusterlabs.org >> Getting started: http://www.clusterlabs.org/doc/Cluster_from_Scratch.pdf >> Bugs: http://bugs.clusterlabs.org >> > > > _______________________________________________ > Pacemaker mailing list: Pacemaker@oss.clusterlabs.org > http://oss.clusterlabs.org/mailman/listinfo/pacemaker > > Project Home: http://www.clusterlabs.org > Getting started: http://www.clusterlabs.org/doc/Cluster_from_Scratch.pdf > Bugs: http://bugs.clusterlabs.org
_______________________________________________ Pacemaker mailing list: Pacemaker@oss.clusterlabs.org http://oss.clusterlabs.org/mailman/listinfo/pacemaker Project Home: http://www.clusterlabs.org Getting started: http://www.clusterlabs.org/doc/Cluster_from_Scratch.pdf Bugs: http://bugs.clusterlabs.org
