Re: [Engine-devel] Design wiki page for trusted compute pools integration with oVirt has been updated
----- Original Message -----
From: "Wei D Chen" <wei.d.chen(a)intel.com>
To: "Ofri Masad" <omasad(a)redhat.com>
Cc: "Oved Ourfalli" <ovedo(a)redhat.com>, engine-devel(a)ovirt.org
Sent: Sunday, April 21, 2013 4:00:55 PM
Subject: Re: [Engine-devel] Design wiki page for trusted compute pools integration with
oVirt has been updated
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
org.ovirt.engine.core.bll.Backend.Initialize()
Note you cannot block this method while waiting for results.
Instead I suggest you fire a one-time background request from
this method.
-----Original Message-----
From: Ofri Masad [mailto:omasad@redhat.com]
Sent: Sunday, April 21, 2013 3:29 PM
To: Chen, Wei D
Cc: Oved Ourfalli; engine-devel(a)ovirt.org; 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" <iheim(a)redhat.com>
> To: "Ofri Masad" <omasad(a)redhat.com>
> Cc: "Oved Ourfalli" <ovedo(a)redhat.com>, "Wei D Chen"
> <wei.d.chen(a)intel.com>, engine-devel(a)ovirt.org
> 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?
>
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