>>> Andrew Beekhof <[email protected]> schrieb am 12.08.2011 um 02:53 in >>> Nachricht <CAEDLWG2pQijx=vwsqyrkfsl74i1xrjidcqcvjs+cvqwmxnm...@mail.gmail.com>: > On Thu, Aug 11, 2011 at 5:37 PM, Ulrich Windl > <[email protected]> wrote: > > Hi! > > > > Using crm shell, you cannot rename a running resource. However I managed to > do it via a shadow cib: I renamed the resource in the shadow cib, then > committed the shadow cib. > > From the XML changes, I got the impression that the old primitive is > removed, and then the new primitive is added. This caused the old resource to > be stopped, the new one to be started, and one resource that was a successor > in the group to be restarted. > > > > There was a temporary "active orphan" (the old name) and "Configuration > WARNINGs found during PE processing", but that vanished when the states > changed (transitions completed). > > > > So obviously there is no rename operation for resources. However when you > add more and more resources to your cluster, one might find the point where > some renaming for consistency might be a good idea. In priniple that could be > done online without taking any resource down, but LRM seems to be not > prepared for that. Are there any technical reasons for that? > > The resource name is the equivalent of a primary key in a database table. > Its the sole point of comparison when deciding if two resources are > the same, therefor rename is not a valid operation to consider. > Any implementation would have to use delete + create underneath.
Hi! In a database you canb change the primary key as long as you do it consistently (in a transaction). I think no CRM would work without transactions anyway, so this could be done IMHO. If any name is unique between transactions, is see no problem changing names of running resources. The olny thing is that one might allow an active monitor to finish before renaming the resource. Also: I don't want to rename the RAs, I just want to rename the resources. Regards, Ulrich > > > > > Regards, > > Ulrich > > > > > > _______________________________________________ > > Linux-HA mailing list > > [email protected] > > http://lists.linux-ha.org/mailman/listinfo/linux-ha > > See also: http://linux-ha.org/ReportingProblems > > > _______________________________________________ > Linux-HA mailing list > [email protected] > http://lists.linux-ha.org/mailman/listinfo/linux-ha > See also: http://linux-ha.org/ReportingProblems > _______________________________________________ Linux-HA mailing list [email protected] http://lists.linux-ha.org/mailman/listinfo/linux-ha See also: http://linux-ha.org/ReportingProblems
