Ofri, Absolutely right, aggregated query has a significantly time improve compared to separated queries. I agree a aggregated query on engine's starting. Is it possible to invoke attestation service in engine's initialization code block instead of "quartz job"? Is there any class similar with " InitVdsOnUpCommand " for engine's initialization?
Best Regards, Dave Chen -----Original Message----- From: Ofri Masad [mailto:[email protected]] Sent: Sunday, April 21, 2013 3:29 PM To: Chen, Wei D Cc: Oved Ourfalli; [email protected]; Itamar Heim Subject: Re: [Engine-devel] Design wiki page for trusted compute pools integration with oVirt has been updated Dave, If I'm not mistaking, there is a big difference between separated queries to the attestation server and aggregated one? Is it true? Thanks, Ofri ----- Original Message ----- > From: "Itamar Heim" <[email protected]> > To: "Ofri Masad" <[email protected]> > Cc: "Oved Ourfalli" <[email protected]>, "Wei D Chen" > <[email protected]>, [email protected] > Sent: Sunday, April 21, 2013 10:20:17 AM > Subject: Re: [Engine-devel] Design wiki page for trusted compute pools > integration with oVirt has been updated > > On 04/21/2013 10:13 AM, Ofri Masad wrote: > > Hi, > > One more thing we need to think about for the second approach - > > aggregated query. On engine start we need to determine the trust > > state of all the hosts. sending a separate query for each host will > > overload the attestation host and the network. an initial aggregated > > query needs to be send when the engine starts. > > Same thing can happen after management network fail and so on. > > Maybe we can run a quartz job every x minutes, checking if a large > > part of the hosts in the cluster (like 30%) are untrusted - in that > > case run the aggregated query. > > are we sure this optimization is needed? > how heavy/latent is the call to the attestation service? > _______________________________________________ Engine-devel mailing list [email protected] http://lists.ovirt.org/mailman/listinfo/engine-devel
