Well that's easy: You can assume network connectivity to all hosts in all dcs from a specific host:
the ovirt-engine host has clearly network access to all hosts in all DCs it manages. this might not be appropriate when the engine is run as self-hosted engine. you should at least avoid to fence the host the engine runs on from engine ;) HTH Am 25.02.2014 11:43, schrieb Barak Azulay: > > > ----- Original Message ----- >> From: "Itamar Heim" <[email protected]> >> To: "Sven Kieske" <[email protected]>, [email protected], "Eli Mesika" >> <[email protected]>, "Barak Azulay" >> <[email protected]> >> Sent: Tuesday, February 25, 2014 12:14:48 PM >> Subject: Re: [Users] oVirt 3.5 planning >> >> On 02/25/2014 11:55 AM, Sven Kieske wrote: >>> RFE] Allow to perform fence operations from engine (or from a host in >>> another DC) >>> the functionality of the current fencing feature is so crippled that >>> it is plain useless in local storage data centers, because you can't >>> use it at all (no other fencing host in cluster)! >>> https://bugzilla.redhat.com/show_bug.cgi?id=1054778 >> >> eli - thoughts on above? >> >> > > The fencing mechanism certainly does not work for local storage domain, > It looks like this was neglected since the fencing mechanism was designed to > prevent data corruption .. and this use case (single host in DC) we are not > worried about it. > > In first look it looks like an easy implementation - just to add a system > wide proxy selection policy, > However when thinking on adding this option I can think of a few issues that > needs to be discussed first: > - Can we assume network connectivity between hosts in different DCs ? > - If this is not the case than can/should we enable specific DCs that we know > has this connectivity ? > > Or do we just select a system wide proxy and try to fence ... this might have > timeout issues in case there is no connectivity ... and fencing might take a > long time to perform. > > > Thanks > Barak Azulay > > > -- Mit freundlichen Grüßen / Regards Sven Kieske Systemadministrator Mittwald CM Service GmbH & Co. KG Königsberger Straße 6 32339 Espelkamp T: +49-5772-293-100 F: +49-5772-293-333 https://www.mittwald.de Geschäftsführer: Robert Meyer St.Nr.: 331/5721/1033, USt-IdNr.: DE814773217, HRA 6640, AG Bad Oeynhausen Komplementärin: Robert Meyer Verwaltungs GmbH, HRB 13260, AG Bad Oeynhausen _______________________________________________ Users mailing list [email protected] http://lists.ovirt.org/mailman/listinfo/users
