On Mon, Apr 11, 2011 at 2:18 PM, Tim Serong <tser...@novell.com> wrote: > On 4/11/2011 at 09:37 PM, Andrew Beekhof <and...@beekhof.net> wrote: >> On Mon, Apr 11, 2011 at 12:57 PM, Tim Serong <tser...@novell.com> wrote: >> > On 3/21/2011 at 08:20 PM, Andrew Beekhof <and...@beekhof.net> wrote: >> >> >> >> Small improvement to: >> >> + The only thing that matters is that in order for any member of a set >> >> to be active, all the members of the previous set must also be active >> >> (and naturally on the same node). When a set has >> >> <literal>sequential="true"</literal>, then in order for any member to >> >> be active, the previous members must also be active. >> >> >> >> + The only thing that matters is that in order for any member of a set >> >> to be active, all the members of the previous set<footnote><para>as >> >> determined by the display order in the configuration</para></footnote> >> >> must also be active (and naturally on the same node). >> >> + When a set has <literal>sequential="true"</literal>, then in order >> >> for any member to be active, the previous members must also be active. >> > >> > This isn't quite correct. >> > >> > For members within a set (sequential=true), it is true that for a given >> > member to be active, the previous members must also be active. >> > >> > Between sets however, it's the other way around - a given set depends on >> > the subsequent set. >> >> Did I really write it like that? You tested it? > > Yup. Well, I tested it (pcmk 1.1.5), so I assume you wrote it like that :) > > We want (pardon the ASCII art): > > /--> C --\ > G --> F --+---> D ---+--> B --> A > \--> E --/ > > Test is: > > # crm configure colocation c inf: F G ( C D E ) A B
Given the well discussed issues with the shell syntax, I'd prefer to see the raw xml actually. > # crm resource stop F > (stops F and G) > # crm resource start F > # crm resource stop D > (stops D, F and G) > # crm resource start D > # crm resource stop B > (stops everything except A) > > That shell colocation constraint maps exactly to the (new) XML shown below > (verified just in case it turned out to be a shell oddity). > >> If so, thats just retarded and needs an overhaul. > > It is a little... confusing. > > Regards, > > Tim > >> > >> > The example colocation chain in Pacemaker Explained right now should thus >> > be changed as follows in order to match the diagram: >> > >> > <constraints> >> > <rsc_colocation id="coloc-1" score="INFINITY" > >> > <resource_set id="collocated-set-1" sequential="true"> >> > - <resource_ref id="A"/> >> > - <resource_ref id="B"/> >> > + <resource_ref id="F"/> >> > + <resource_ref id="G"/> >> > </resource_set> >> > <resource_set id="collocated-set-2" sequential="false"> >> > <resource_ref id="C"/> >> > <resource_ref id="D"/> >> > <resource_ref id="E"/> >> > </resource_set> >> > <resource_set id="collocated-set-2" sequential="true" role="Master"> >> > - <resource_ref id="F"/> >> > - <resource_ref id="G"/> >> > + <resource_ref id="A"/> >> > + <resource_ref id="B"/> >> > </resource_set> >> > </rsc_colocation> >> > </constraints> >> > >> > Regards, >> > >> > Tim >> > >> > >> > -- >> > Tim Serong <tser...@novell.com> >> > Senior Clustering Engineer, OPS Engineering, Novell Inc. >> > >> > >> > >> > >> > _______________________________________________ >> > 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://developerbugs.linux-foundation.org/enter_bug.cgi?product=Pacemaker >> > >> > > > > > -- > Tim Serong <tser...@novell.com> > Senior Clustering Engineer, OPS Engineering, Novell Inc. > > > > _______________________________________________ > 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://developerbugs.linux-foundation.org/enter_bug.cgi?product=Pacemaker > _______________________________________________ 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://developerbugs.linux-foundation.org/enter_bug.cgi?product=Pacemaker
