On Tue, Oct 30, 2012 at 5:33 PM, Vladislav Bogdanov <bub...@hoster-ok.com> wrote: > 29.10.2012 22:10, David Vossel wrote: >> >> >> ----- Original Message ----- >>> From: "Bernardo Cabezas Serra" <bcabe...@apsl.net> >>> To: pacemaker@oss.clusterlabs.org >>> Sent: Monday, October 29, 2012 11:51:51 AM >>> Subject: [Pacemaker] Build dlm_controld for pacemaker stack >>> (dlm_controld.pcmk) >>> >>> >>> Hello, >>> >>> disclaimer: I have posted this issue to linux-ha list too a couple of >>> days ago. I'm sorry if this is not the correct list, and thanks if >>> you can give me a hint about which cluster stack should I use for >>> ocfs2 by now. >>> >>> I'm trying to compile all stack for corosync + pacemaker + dlm + >>> ocfs2 (with dlm_controld.pmk), without cman stack. I'm following the >>> "From source" Pacemaker guide. >>> >>> After some days trying to compile the correct combination of >>> sources/versions, I have no success, and I'm not sure if at this >>> moment this is possible. >>> >>> The fist problem was that cluster removed support for dlm_controld >>> with pacemaker stack. Last version with support was 3.0.17. >>> But this was done some years ago, and as far as I have been able to >>> understand, things are still broken. >>> >>> >>> The most relevant info found about this issue are these threads from >>> Andrew Beekhof and Vladislav Bogdanov, wich suggest to compile >>> dlm_controld from Cluster, applying some patches. They report it >>> worked (whith some remaining issues): >>> >>> http://oss.clusterlabs.org/pipermail/pacemaker/2009-October/003064.html >>> http://www.mail-archive.com/pacemaker@oss.clusterlabs.org/msg09959.html >>> >>> But most recent issue about this is a year ago, and seems that things >>> are still broken. >>> I haven't been able to compile, with lots of errors, so I'm currently >>> asking if this is the right way, becouse seems that nobody else is >>> willing to use this... >>> >>> >>> At cluster page, they state that now DLM code has been separated from >>> cluster: >>> https://fedorahosted.org/cluster/wiki/HomePage >>> >>> But this dlm project (that seems to have pcmk support), depends on >>> corosync 2.0, so it can't run with last pacemaker (1.1.8). (can it?) >>> http://git.fedorahosted.org/git/dlm.git >>> >>> Before spending more time with this, I wanted to ask for the right >>> way to do things. >>> So Questions are: >>> >>> (1) Is it by now possible to get an ocfs2 corosync + pacemaker >>> cluster, without cman, and dlm_controld with pcmk stack? (if yes >>> which repos/versions)? >> >> I don't know about ocfs2, but using the dlm without cman is >> definitely possible right now. It should work. I tried it out a few months >> ago. We >> even have a tutorial outlining how to do gfs2 + dlm + pacemaker 1.1.8 + >> corosync 2.0. >> http://www.clusterlabs.org/doc/en-US/Pacemaker/1.1/html/Clusters_from_Scratch/ >> Take a look at the active/active section. > > 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? :-) > I can send that patch here for those who interested. I think the same > method may apply to ocfs2 (I'm allergic to it so I wont even look). > > Vladislav > >> >> Hope that helps. >> >> -- Vossel >> >>> (2) What is the future roadmap about this? Will future corosync2.0 >>> cluster have dlm issues addressed? >>> >>> Also, I have read (also Andrew post) that OCFS2 cluster could have >>> problems on top of corosync 2.0, as OCFS2 has't ben ported (GFS2 was >>> ported). >>> http://www.gossamer-threads.com/lists/linuxha/pacemaker/78538 >>> so: >>> (3) Is GSF2 a better future option in terms of support, for linux-ha >>> clusters? >>> >>> >>> More details about pcmk dlm_controld: >>> I found that Suse have always been mantaining cman-free cluster >>> stack, so I have tried to find dlm in its packages. >>> Found: >>> http://rpmfind.net//linux/RPM/opensuse/factory/x86_64/libdlm-3.00.01-24.5.x86_64.html >>> >>> But also I have had lots of compilation problems, trying several >>> pacemaker, versions, also the suse-patched ones. Haven't been able >>> to successfully complie a dlm_controld. >>> >>> >>> Thanks and Regards, >>> Bernardo >>> -- >>> APSL >>> APSL >>> Bernardo Cabezas Serra >>> Responsable Sistemas >>> Ada Byron, edificio NTIC 2ºA >>> 07121 ParcBit >>> Mail: bcabe...@apsl.net >>> Skype: bernat.cabezas >>> Tel: 971439771 >>> >>> _______________________________________________ >>> 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 _______________________________________________ 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
