On 11/04/2013, at 10:04 PM, Brian J. Murrell <br...@interlinx.bc.ca> wrote:
> On 13-04-11 07:37 AM, Brian J. Murrell wrote: >> >> In exploring all options, how about pcs? Does pcs' "resource create >> ..." for example have the same read+modify+replace problem as crm >> configure or does pcs resource create also only send proper fragments to >> update just the part of the CIB it's operating on? > > Having just cracked pcs open, it doesn't seem to. It seems to create an > XML string which it then applies to the CIB with: > > cibadmin -o resources -C -X $xml_resource_string > > IIUC, that is compatible with my use-case of multiple nodes in the > cluster creating resources concurrently and not having last-write-wins > problems, correct? Correct. > > Usually the multiple nodes are creating separate resources and in any > case where multiple nodes are creating the same resource (or adjusting > some global parameter), it's configuration is the same from all writers > so last-write-wins there doesn't matter, yes? Actually, I think the semantics of -C are first-write-wins and any subsequent attempts fail with -EEXSIST > > Cheers, > b. > > > _______________________________________________ > 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
