On Thu, Nov 1, 2012 at 5:09 PM, Vladislav Bogdanov <bub...@hoster-ok.com> wrote: > 01.11.2012 02:47, Andrew Beekhof wrote: > ... >>> >>> One remark about that - it requires that gfs2 communicates with dlm in >>> the kernel space - so gfs_controld is not longer required. I think >>> Fedora 17 is the first version with that feature. And it is definitely >>> not available for EL6 (centos6 which I use). >>> >>> But I have preliminary success running GFS2 with corosync2 and pacemaker >>> 1.1.8 on EL6. dlm4 runs just fine as is (although it misses some >>> featured on EL6 because of kernel). And it still includes (not >>> documented) option enable_fscontrol, so user-space communication with fs >>> control daemons is supported. Even it that feature will be removed >>> upstream, it can be easily returned back - just several lines of code. >>> And I ported gfs_controld from cman to corosync2 (patch is very dirty >>> yet, made with scissors and needle, just a proof-of-concept that it even >>> can work). Some features are unsupported (f.e. nodir) and will not be >>> implemented by me. >> >> I'm impressed. What was the motivation though? You really really >> don't like CMAN? :-) > > Why should I like software which is going to die? ;) > > I believe that how things are done currently (third case from your list) > fully reflect my "perfectionistic" needs. I had many problems with > cman+pacemaker in a past. Most critical is that pacemaker and > dlm_controld react differently when node reappears back very soon after > if was lost (because pacemaker uses totem ? directly for membership, but > dlm uses CPG).
We both get it from the CPG and quorum APIs for option 3. > Pacemaker accepts that, but controld freezes lockspaces, > waiting for fencing. But fencing is never done because nobody handles > "node lost" CPG event. WTF. Pacemaker should absolutely do this. Bug report? > dlm does start fencing for "process lost", but > not for "node lost". > > > > _______________________________________________ > 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
