[Engine-devel] Is there a 'Can run this VM?' query
Beaker automated test system (http://fedoraproject.org/wiki/QA/Beaker) would like to integrate with the project, via the REST API. Their main concern is that they'll provision VMs who would not be able to run on the ovirt setup. I think there are two cases here: 1. Provisioning a VM with X vCPUs, while there isn't a host available with such number of pCPUs (or similar in memory) - this is easier, as it can be 'calculated' from the setup beforehand and we can avoid such provisioning. 2. More difficult - in runtime, the hosts are over-committed and we cannot run a VM - can we, before trying to run a VM, ask if it's feasible? I know it's a point in time, and may be wrong in the next second, but if we go 'no' as an answer, it already provides good information to Beaker to continue and look elsewhere. Y.
On 01/09/2012 09:36 AM, Yaniv Kaul wrote:
Beaker automated test system (http://fedoraproject.org/wiki/QA/Beaker) would like to integrate with the project, via the REST API. Their main concern is that they'll provision VMs who would not be able to run on the ovirt setup. I think there are two cases here: 1. Provisioning a VM with X vCPUs, while there isn't a host available with such number of pCPUs (or similar in memory) - this is easier, as it can be 'calculated' from the setup beforehand and we can avoid such provisioning. 2. More difficult - in runtime, the hosts are over-committed and we cannot run a VM - can we, before trying to run a VM, ask if it's feasible? I know it's a point in time, and may be wrong in the next second, but if we go 'no' as an answer, it already provides good information to Beaker to continue and look elsewhere.
what about using the new quota feature to define a quota which will not overload the server and serve as a measure of SLA for them?
On 01/09/2012 12:32 PM, Itamar Heim wrote:
On 01/09/2012 09:36 AM, Yaniv Kaul wrote:
Beaker automated test system (http://fedoraproject.org/wiki/QA/Beaker) would like to integrate with the project, via the REST API. Their main concern is that they'll provision VMs who would not be able to run on the ovirt setup. I think there are two cases here: 1. Provisioning a VM with X vCPUs, while there isn't a host available with such number of pCPUs (or similar in memory) - this is easier, as it can be 'calculated' from the setup beforehand and we can avoid such provisioning. 2. More difficult - in runtime, the hosts are over-committed and we cannot run a VM - can we, before trying to run a VM, ask if it's feasible? I know it's a point in time, and may be wrong in the next second, but if we go 'no' as an answer, it already provides good information to Beaker to continue and look elsewhere.
what about using the new quota feature to define a quota which will not overload the server and serve as a measure of SLA for them?
Yes, that would be helpful, when available. Already sent them the description for this feature. Y.
----- Original Message -----
From: "Yaniv Kaul" <ykaul@redhat.com> To: engine-devel@ovirt.org Sent: Monday, January 9, 2012 9:36:34 AM Subject: [Engine-devel] Is there a 'Can run this VM?' query
Beaker automated test system (http://fedoraproject.org/wiki/QA/Beaker) would like to integrate with the project, via the REST API. Their main concern is that they'll provision VMs who would not be able to run on the ovirt setup. I think there are two cases here: 1. Provisioning a VM with X vCPUs, while there isn't a host available with such number of pCPUs (or similar in memory) - this is easier, as it can be 'calculated' from the setup beforehand and we can avoid such provisioning. 2. More difficult - in runtime, the hosts are over-committed and we cannot run a VM - can we, before trying to run a VM, ask if it's feasible? I know it's a point in time, and may be wrong in the next second, but if we go 'no' as an answer, it already provides good information to Beaker to continue and look elsewhere. Y.
there is no such query currently, the answer to this question actually is lots of other questions (status, storage, host availability and more) BUT i think its rather easy creating such a query (though caller need to remember it might be a long one)
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From: "Omer Frenkel" <ofrenkel@redhat.com> To: "Yaniv Kaul" <ykaul@redhat.com> Cc: engine-devel@ovirt.org Sent: Monday, January 9, 2012 2:06:58 PM Subject: Re: [Engine-devel] Is there a 'Can run this VM?' query
----- Original Message -----
From: "Yaniv Kaul" <ykaul@redhat.com> To: engine-devel@ovirt.org Sent: Monday, January 9, 2012 9:36:34 AM Subject: [Engine-devel] Is there a 'Can run this VM?' query
Beaker automated test system (http://fedoraproject.org/wiki/QA/Beaker) would like to integrate with the project, via the REST API. Their main concern is that they'll provision VMs who would not be able to run on the ovirt setup. I think there are two cases here: 1. Provisioning a VM with X vCPUs, while there isn't a host available with such number of pCPUs (or similar in memory) - this is easier, as it can be 'calculated' from the setup beforehand and we can avoid such provisioning. 2. More difficult - in runtime, the hosts are over-committed and we cannot run a VM - can we, before trying to run a VM, ask if it's feasible? I know it's a point in time, and may be wrong in the next second, but if we go 'no' as an answer, it already provides good information to Beaker to continue and look elsewhere. Y.
there is no such query currently, if we're going to supply one, we either encapsulate the canDoAction to a class and re-use or supply a boolean argument on the parameter class, say "dryRun", to indicate command doesn't
----- Original Message ----- perform the execute part realy.
the answer to this question actually is lots of other questions (status, storage, host availability and more) BUT i think its rather easy creating such a query (though caller need to remember it might be a long one)
_______________________________________________ Engine-devel mailing list Engine-devel@ovirt.org http://lists.ovirt.org/mailman/listinfo/engine-devel
_______________________________________________ Engine-devel mailing list Engine-devel@ovirt.org http://lists.ovirt.org/mailman/listinfo/engine-devel
----- Original Message -----
From: "Roy Golan" <rgolan@redhat.com> To: "Omer Frenkel" <ofrenkel@redhat.com> Cc: engine-devel@ovirt.org, "Yaniv Kaul" <ykaul@redhat.com> Sent: Monday, January 9, 2012 2:21:29 PM Subject: Re: [Engine-devel] Is there a 'Can run this VM?' query
From: "Omer Frenkel" <ofrenkel@redhat.com> To: "Yaniv Kaul" <ykaul@redhat.com> Cc: engine-devel@ovirt.org Sent: Monday, January 9, 2012 2:06:58 PM Subject: Re: [Engine-devel] Is there a 'Can run this VM?' query
----- Original Message -----
From: "Yaniv Kaul" <ykaul@redhat.com> To: engine-devel@ovirt.org Sent: Monday, January 9, 2012 9:36:34 AM Subject: [Engine-devel] Is there a 'Can run this VM?' query
Beaker automated test system (http://fedoraproject.org/wiki/QA/Beaker) would like to integrate with the project, via the REST API. Their main concern is that they'll provision VMs who would not be able to run on the ovirt setup. I think there are two cases here: 1. Provisioning a VM with X vCPUs, while there isn't a host available with such number of pCPUs (or similar in memory) - this is easier, as it can be 'calculated' from the setup beforehand and we can avoid such provisioning. 2. More difficult - in runtime, the hosts are over-committed and we cannot run a VM - can we, before trying to run a VM, ask if it's feasible? I know it's a point in time, and may be wrong in the next second, but if we go 'no' as an answer, it already provides good information to Beaker to continue and look elsewhere. Y.
there is no such query currently, if we're going to supply one, we either encapsulate the canDoAction to a class and re-use or supply a boolean argument on the parameter class, say "dryRun", to indicate command doesn't
----- Original Message ----- perform the execute part realy.
yep, RunVmCommand.CanRunVm() is public and static, return boolean and even fill list messages. this is why i said i think its easy to do it :) just need to check it really covers anything and behave well
the answer to this question actually is lots of other questions (status, storage, host availability and more) BUT i think its rather easy creating such a query (though caller need to remember it might be a long one)
_______________________________________________ Engine-devel mailing list Engine-devel@ovirt.org http://lists.ovirt.org/mailman/listinfo/engine-devel
_______________________________________________ Engine-devel mailing list Engine-devel@ovirt.org http://lists.ovirt.org/mailman/listinfo/engine-devel
On 01/09/2012 02:44 PM, Omer Frenkel wrote:
----- Original Message -----
From: "Roy Golan"<rgolan@redhat.com> To: "Omer Frenkel"<ofrenkel@redhat.com> Cc: engine-devel@ovirt.org, "Yaniv Kaul"<ykaul@redhat.com> Sent: Monday, January 9, 2012 2:21:29 PM Subject: Re: [Engine-devel] Is there a 'Can run this VM?' query
From: "Omer Frenkel"<ofrenkel@redhat.com> To: "Yaniv Kaul"<ykaul@redhat.com> Cc: engine-devel@ovirt.org Sent: Monday, January 9, 2012 2:06:58 PM Subject: Re: [Engine-devel] Is there a 'Can run this VM?' query
----- Original Message -----
From: "Yaniv Kaul"<ykaul@redhat.com> To: engine-devel@ovirt.org Sent: Monday, January 9, 2012 9:36:34 AM Subject: [Engine-devel] Is there a 'Can run this VM?' query
Beaker automated test system (http://fedoraproject.org/wiki/QA/Beaker) would like to integrate with the project, via the REST API. Their main concern is that they'll provision VMs who would not be able to run on the ovirt setup. I think there are two cases here: 1. Provisioning a VM with X vCPUs, while there isn't a host available with such number of pCPUs (or similar in memory) - this is easier, as it can be 'calculated' from the setup beforehand and we can avoid such provisioning. 2. More difficult - in runtime, the hosts are over-committed and we cannot run a VM - can we, before trying to run a VM, ask if it's feasible? I know it's a point in time, and may be wrong in the next second, but if we go 'no' as an answer, it already provides good information to Beaker to continue and look elsewhere. Y.
there is no such query currently, if we're going to supply one, we either encapsulate the canDoAction to a class and re-use or supply a boolean argument on the parameter class, say "dryRun", to indicate command doesn't
----- Original Message ----- perform the execute part realy.
yep, RunVmCommand.CanRunVm() is public and static, return boolean and even fill list messages. this is why i said i think its easy to do it :) just need to check it really covers anything and behave well
I'd start from trying to understand how you would model such a query in the REST API for users to consume...
participants (4)
-
Itamar Heim -
Omer Frenkel -
Roy Golan -
Yaniv Kaul