[ovirt-users] Re: Host choice when migrating VMs

2019-02-22 Thread Karli Sjöberg
Den 22 feb. 2019 15:51 skrev Dominik Holler :On Fri, 22 Feb 2019 15:50:23 +0100 (CET)Karli Sjöberg  wrote:> > > Den 22 feb. 2019 15:48 skrev Dominik Holler :> On Fri, 22 Feb 2019 15:46:00 +0100 (CET)> > Karli Sjöberg wrote:> > > > >> > >> > > Den 22 feb. 2019 15:35 skrev Dominik Holler :> > > On Fri, 22 Feb 2019 15:02:10 +0100 (CET)> > > > Karli Sjöberg wrote:> > > >> > > > >> > > > >> > > > > Den 22 feb. 2019 09:24 skrev Nicolas Ecarnot :> > > > > Hello,> > > > > >> > > > > > I'm almost sure the following is useless as I think I know how it's> > > > > > working, but as I'm preparing a major change in our infrastructure, I'd> > > > > > rather be sure and not mess up. And also to be sure.> > > > > > (Just to be sure)> > > > > >> > > > > > For some reasons, and for the first time in our infra., one of our new> > > > > > DC will temporary include heterogeneous hosts : some networks will be> > > > > > available only on parts of them.> > > > > >> > > >> > > > Should work.> > > >> > > > > Hosts _needs_ the same networks to be available in the same cluster. Different networked hosts needs to be put in a separate cluster.> > > > >> > > >> > > > This is the most straight approach, which is supported by oVirt.> > > > But there is the possibility to attach logical networks, which are> > > > neither required in the cluster, nor attached to all hosts in the> > > > cluster, to a VM. oVirt's scheduling will respect this.> > > >> > > So you're saying oVirt knows which other hosts in the cluster have the non-mandatory network(s) the VM has and only chooses between those a host to migrate the VM to?> > >> > > > Yes. If you try to trigger the migration manually, UI will provide you> > the list of possible hosts to migrate the VM.> > > Well, what about automatically migrated VM's?> The same rules apply.Cool! Seems like your question got answered Nic, right?/K> /K> > > > > /K> > >> > > Of course this introduces some obvious limitations, e.g. you cannot> > > > hotplug a network to a VM, which runs on a host, which is not connected> > > > to this network or neither you nor oVirt can schedule a VM to a host,> > > > which does not provide all the networks attached to the VM.> > > >> > > > If you want to be even more sure, the reference to the relevant source> > > > https://github.com/oVirt/ovirt-engine/blob/7d111f3aa089f77f92049f4d3ec792e5ff7e5324/backend/manager/modules/bll/src/main/java/org/ovirt/engine/core/bll/scheduling/policyunits/NetworkPolicyUnit.java#L132> > > >> > > >> > > > > /K> > > > >> > > > >> > > > > > Please may someone confirm me that with every load balancing / VM> > > > > > startup / VM migration / host choice, oVirt will smartly choose the> > > > > > available host equipped with the adequate networks?> > > > > >> > > > > > --> > > > > > Nicolas ECARNOT> > > > > > ___> > > > > > Users mailing list -- users@ovirt.org> > > > > > To unsubscribe send an email to users-le...@ovirt.org> > > > > > Privacy Statement: https://www.ovirt.org/site/privacy-policy/> > > > > > oVirt Code of Conduct: https://www.ovirt.org/community/about/community-guidelines/> > > > > > List Archives: https://lists.ovirt.org/archives/list/users@ovirt.org/message/QGX3PHA4T3SXXDTYZ4VGY6UHECO7P6V5/> > > > > >> > > >> > > >> > > > ___
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[ovirt-users] Re: Host choice when migrating VMs

2019-02-22 Thread Nicolas Ecarnot

Le 22/02/2019 à 15:48, Dominik Holler a écrit :

Hosts _needs_ the same networks to be available in the same cluster. Different 
networked hosts needs to be put in a separate cluster.



This is the most straight approach, which is supported by oVirt.
But there is the possibility to attach logical networks, which are
neither required in the cluster, nor attached to all hosts in the
cluster, to a VM. oVirt's scheduling will respect this.


So you're saying oVirt knows which other hosts in the cluster have the 
non-mandatory network(s) the VM has and only chooses between those a host to 
migrate the VM to?



Yes. If you try to trigger the migration manually, UI will provide you
the list of possible hosts to migrate the VM.
https://github.com/oVirt/ovirt-engine/blob/7d111f3aa089f77f92049f4d3ec792e5ff7e5324/backend/manager/modules/bll/src/main/java/org/ovirt/engine/core/bll/scheduling/policyunits/NetworkPolicyUnit.java#L132




*THIS* is precisely the answer I was expecting.

Thank you Dominik.

--
Nicolas ECARNOT
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[ovirt-users] Re: Host choice when migrating VMs

2019-02-22 Thread Dominik Holler
On Fri, 22 Feb 2019 15:50:23 +0100 (CET)
Karli Sjöberg  wrote:

> 
> 
> Den 22 feb. 2019 15:48 skrev Dominik Holler :
> On Fri, 22 Feb 2019 15:46:00 +0100 (CET)
> > Karli Sjöberg wrote:
> > 
> > >
> > >
> > > Den 22 feb. 2019 15:35 skrev Dominik Holler :
> > > On Fri, 22 Feb 2019 15:02:10 +0100 (CET)
> > > > Karli Sjöberg wrote:
> > > >
> > > > >
> > > > >
> > > > > Den 22 feb. 2019 09:24 skrev Nicolas Ecarnot :
> > > > > Hello,
> > > > > >
> > > > > > I'm almost sure the following is useless as I think I know how it's
> > > > > > working, but as I'm preparing a major change in our infrastructure, 
> > > > > > I'd
> > > > > > rather be sure and not mess up. And also to be sure.
> > > > > > (Just to be sure)
> > > > > >
> > > > > > For some reasons, and for the first time in our infra., one of our 
> > > > > > new
> > > > > > DC will temporary include heterogeneous hosts : some networks will 
> > > > > > be
> > > > > > available only on parts of them.
> > > > > >
> > > >
> > > > Should work.
> > > >
> > > > > Hosts _needs_ the same networks to be available in the same cluster. 
> > > > > Different networked hosts needs to be put in a separate cluster.
> > > > >
> > > >
> > > > This is the most straight approach, which is supported by oVirt.
> > > > But there is the possibility to attach logical networks, which are
> > > > neither required in the cluster, nor attached to all hosts in the
> > > > cluster, to a VM. oVirt's scheduling will respect this.
> > > >
> > > So you're saying oVirt knows which other hosts in the cluster have the 
> > > non-mandatory network(s) the VM has and only chooses between those a host 
> > > to migrate the VM to?
> > >
> > 
> > Yes. If you try to trigger the migration manually, UI will provide you
> > the list of possible hosts to migrate the VM.
> > 
> Well, what about automatically migrated VM's?
> 

The same rules apply.

> /K
> 
> 
> > > /K
> > >
> > > Of course this introduces some obvious limitations, e.g. you cannot
> > > > hotplug a network to a VM, which runs on a host, which is not connected
> > > > to this network or neither you nor oVirt can schedule a VM to a host,
> > > > which does not provide all the networks attached to the VM.
> > > >
> > > > If you want to be even more sure, the reference to the relevant source
> > > > https://github.com/oVirt/ovirt-engine/blob/7d111f3aa089f77f92049f4d3ec792e5ff7e5324/backend/manager/modules/bll/src/main/java/org/ovirt/engine/core/bll/scheduling/policyunits/NetworkPolicyUnit.java#L132
> > > >
> > > >
> > > > > /K
> > > > >
> > > > >
> > > > > > Please may someone confirm me that with every load balancing / VM
> > > > > > startup / VM migration / host choice, oVirt will smartly choose the
> > > > > > available host equipped with the adequate networks?
> > > > > >
> > > > > > --
> > > > > > Nicolas ECARNOT
> > > > > > ___
> > > > > > Users mailing list -- users@ovirt.org
> > > > > > To unsubscribe send an email to users-le...@ovirt.org
> > > > > > Privacy Statement: https://www.ovirt.org/site/privacy-policy/
> > > > > > oVirt Code of Conduct: 
> > > > > > https://www.ovirt.org/community/about/community-guidelines/
> > > > > > List Archives: 
> > > > > > https://lists.ovirt.org/archives/list/users@ovirt.org/message/QGX3PHA4T3SXXDTYZ4VGY6UHECO7P6V5/
> > > > > >
> > > >
> > > >
> > 
> > 
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[ovirt-users] Re: Host choice when migrating VMs

2019-02-22 Thread Karli Sjöberg
Den 22 feb. 2019 15:48 skrev Dominik Holler :On Fri, 22 Feb 2019 15:46:00 +0100 (CET)Karli Sjöberg  wrote:> > > Den 22 feb. 2019 15:35 skrev Dominik Holler :> On Fri, 22 Feb 2019 15:02:10 +0100 (CET)> > Karli Sjöberg wrote:> > > > >> > >> > > Den 22 feb. 2019 09:24 skrev Nicolas Ecarnot :> > > Hello,> > > >> > > > I'm almost sure the following is useless as I think I know how it's> > > > working, but as I'm preparing a major change in our infrastructure, I'd> > > > rather be sure and not mess up. And also to be sure.> > > > (Just to be sure)> > > >> > > > For some reasons, and for the first time in our infra., one of our new> > > > DC will temporary include heterogeneous hosts : some networks will be> > > > available only on parts of them.> > > >> > > > Should work.> > > > > Hosts _needs_ the same networks to be available in the same cluster. Different networked hosts needs to be put in a separate cluster.> > >> > > > This is the most straight approach, which is supported by oVirt.> > But there is the possibility to attach logical networks, which are> > neither required in the cluster, nor attached to all hosts in the> > cluster, to a VM. oVirt's scheduling will respect this.> > > So you're saying oVirt knows which other hosts in the cluster have the non-mandatory network(s) the VM has and only chooses between those a host to migrate the VM to?> Yes. If you try to trigger the migration manually, UI will provide youthe list of possible hosts to migrate the VM.Well, what about automatically migrated VM's?/K> /K> > Of course this introduces some obvious limitations, e.g. you cannot> > hotplug a network to a VM, which runs on a host, which is not connected> > to this network or neither you nor oVirt can schedule a VM to a host,> > which does not provide all the networks attached to the VM.> > > > If you want to be even more sure, the reference to the relevant source> > https://github.com/oVirt/ovirt-engine/blob/7d111f3aa089f77f92049f4d3ec792e5ff7e5324/backend/manager/modules/bll/src/main/java/org/ovirt/engine/core/bll/scheduling/policyunits/NetworkPolicyUnit.java#L132> > > > > > > /K> > >> > >> > > > Please may someone confirm me that with every load balancing / VM> > > > startup / VM migration / host choice, oVirt will smartly choose the> > > > available host equipped with the adequate networks?> > > >> > > > --> > > > Nicolas ECARNOT> > > > ___> > > > Users mailing list -- users@ovirt.org> > > > To unsubscribe send an email to users-le...@ovirt.org> > > > Privacy Statement: https://www.ovirt.org/site/privacy-policy/> > > > oVirt Code of Conduct: https://www.ovirt.org/community/about/community-guidelines/> > > > List Archives: https://lists.ovirt.org/archives/list/users@ovirt.org/message/QGX3PHA4T3SXXDTYZ4VGY6UHECO7P6V5/> > > >> > > > ___
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[ovirt-users] Re: Host choice when migrating VMs

2019-02-22 Thread Dominik Holler
On Fri, 22 Feb 2019 15:46:00 +0100 (CET)
Karli Sjöberg  wrote:

> 
> 
> Den 22 feb. 2019 15:35 skrev Dominik Holler :
> On Fri, 22 Feb 2019 15:02:10 +0100 (CET)
> > Karli Sjöberg wrote:
> > 
> > >
> > >
> > > Den 22 feb. 2019 09:24 skrev Nicolas Ecarnot :
> > > Hello,
> > > >
> > > > I'm almost sure the following is useless as I think I know how it's
> > > > working, but as I'm preparing a major change in our infrastructure, I'd
> > > > rather be sure and not mess up. And also to be sure.
> > > > (Just to be sure)
> > > >
> > > > For some reasons, and for the first time in our infra., one of our new
> > > > DC will temporary include heterogeneous hosts : some networks will be
> > > > available only on parts of them.
> > > >
> > 
> > Should work.
> > 
> > > Hosts _needs_ the same networks to be available in the same cluster. 
> > > Different networked hosts needs to be put in a separate cluster.
> > >
> > 
> > This is the most straight approach, which is supported by oVirt.
> > But there is the possibility to attach logical networks, which are
> > neither required in the cluster, nor attached to all hosts in the
> > cluster, to a VM. oVirt's scheduling will respect this.
> > 
> So you're saying oVirt knows which other hosts in the cluster have the 
> non-mandatory network(s) the VM has and only chooses between those a host to 
> migrate the VM to?
> 

Yes. If you try to trigger the migration manually, UI will provide you
the list of possible hosts to migrate the VM.

> /K
> 
> Of course this introduces some obvious limitations, e.g. you cannot
> > hotplug a network to a VM, which runs on a host, which is not connected
> > to this network or neither you nor oVirt can schedule a VM to a host,
> > which does not provide all the networks attached to the VM.
> > 
> > If you want to be even more sure, the reference to the relevant source
> > https://github.com/oVirt/ovirt-engine/blob/7d111f3aa089f77f92049f4d3ec792e5ff7e5324/backend/manager/modules/bll/src/main/java/org/ovirt/engine/core/bll/scheduling/policyunits/NetworkPolicyUnit.java#L132
> > 
> > 
> > > /K
> > >
> > >
> > > > Please may someone confirm me that with every load balancing / VM
> > > > startup / VM migration / host choice, oVirt will smartly choose the
> > > > available host equipped with the adequate networks?
> > > >
> > > > --
> > > > Nicolas ECARNOT
> > > > ___
> > > > Users mailing list -- users@ovirt.org
> > > > To unsubscribe send an email to users-le...@ovirt.org
> > > > Privacy Statement: https://www.ovirt.org/site/privacy-policy/
> > > > oVirt Code of Conduct: 
> > > > https://www.ovirt.org/community/about/community-guidelines/
> > > > List Archives: 
> > > > https://lists.ovirt.org/archives/list/users@ovirt.org/message/QGX3PHA4T3SXXDTYZ4VGY6UHECO7P6V5/
> > > >
> > 
> > 
___
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[ovirt-users] Re: Host choice when migrating VMs

2019-02-22 Thread Karli Sjöberg
Den 22 feb. 2019 15:35 skrev Dominik Holler :On Fri, 22 Feb 2019 15:02:10 +0100 (CET)Karli Sjöberg  wrote:> > > Den 22 feb. 2019 09:24 skrev Nicolas Ecarnot :> Hello,> > > > I'm almost sure the following is useless as I think I know how it's> > working, but as I'm preparing a major change in our infrastructure, I'd> > rather be sure and not mess up. And also to be sure.> > (Just to be sure)> > > > For some reasons, and for the first time in our infra., one of our new> > DC will temporary include heterogeneous hosts : some networks will be> > available only on parts of them.> > Should work.> Hosts _needs_ the same networks to be available in the same cluster. Different networked hosts needs to be put in a separate cluster.> This is the most straight approach, which is supported by oVirt.But there is the possibility to attach logical networks, which areneither required in the cluster, nor attached to all hosts in thecluster, to a VM. oVirt's scheduling will respect this.So you're saying oVirt knows which other hosts in the cluster have the non-mandatory network(s) the VM has and only chooses between those a host to migrate the VM to?/KOf course this introduces some obvious limitations, e.g. you cannothotplug a network to a VM, which runs on a host, which is not connectedto this network or neither you nor oVirt can schedule a VM to a host,which does not provide all the networks attached to the VM.If you want to be even more sure, the reference to the relevant sourcehttps://github.com/oVirt/ovirt-engine/blob/7d111f3aa089f77f92049f4d3ec792e5ff7e5324/backend/manager/modules/bll/src/main/java/org/ovirt/engine/core/bll/scheduling/policyunits/NetworkPolicyUnit.java#L132> /K> > > > Please may someone confirm me that with every load balancing / VM> > startup / VM migration / host choice, oVirt will smartly choose the> > available host equipped with the adequate networks?> > > > --> > Nicolas ECARNOT> > ___> > Users mailing list -- users@ovirt.org> > To unsubscribe send an email to users-le...@ovirt.org> > Privacy Statement: https://www.ovirt.org/site/privacy-policy/> > oVirt Code of Conduct: https://www.ovirt.org/community/about/community-guidelines/> > List Archives: https://lists.ovirt.org/archives/list/users@ovirt.org/message/QGX3PHA4T3SXXDTYZ4VGY6UHECO7P6V5/> > ___
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[ovirt-users] Re: Host choice when migrating VMs

2019-02-22 Thread Dominik Holler
On Fri, 22 Feb 2019 15:02:10 +0100 (CET)
Karli Sjöberg  wrote:

> 
> 
> Den 22 feb. 2019 09:24 skrev Nicolas Ecarnot :
> Hello,
> > 
> > I'm almost sure the following is useless as I think I know how it's
> > working, but as I'm preparing a major change in our infrastructure, I'd
> > rather be sure and not mess up. And also to be sure.
> > (Just to be sure)
> > 
> > For some reasons, and for the first time in our infra., one of our new
> > DC will temporary include heterogeneous hosts : some networks will be
> > available only on parts of them.
> > 

Should work.

> Hosts _needs_ the same networks to be available in the same cluster. 
> Different networked hosts needs to be put in a separate cluster.
> 

This is the most straight approach, which is supported by oVirt.
But there is the possibility to attach logical networks, which are
neither required in the cluster, nor attached to all hosts in the
cluster, to a VM. oVirt's scheduling will respect this.
Of course this introduces some obvious limitations, e.g. you cannot
hotplug a network to a VM, which runs on a host, which is not connected
to this network or neither you nor oVirt can schedule a VM to a host,
which does not provide all the networks attached to the VM.

If you want to be even more sure, the reference to the relevant source
https://github.com/oVirt/ovirt-engine/blob/7d111f3aa089f77f92049f4d3ec792e5ff7e5324/backend/manager/modules/bll/src/main/java/org/ovirt/engine/core/bll/scheduling/policyunits/NetworkPolicyUnit.java#L132


> /K
> 
> 
> > Please may someone confirm me that with every load balancing / VM
> > startup / VM migration / host choice, oVirt will smartly choose the
> > available host equipped with the adequate networks?
> > 
> > --
> > Nicolas ECARNOT
> > ___
> > Users mailing list -- users@ovirt.org
> > To unsubscribe send an email to users-le...@ovirt.org
> > Privacy Statement: https://www.ovirt.org/site/privacy-policy/
> > oVirt Code of Conduct: 
> > https://www.ovirt.org/community/about/community-guidelines/
> > List Archives: 
> > https://lists.ovirt.org/archives/list/users@ovirt.org/message/QGX3PHA4T3SXXDTYZ4VGY6UHECO7P6V5/
> > 
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[ovirt-users] Re: Host choice when migrating VMs

2019-02-22 Thread Karli Sjöberg
Den 22 feb. 2019 15:22 skrev Nicolas Ecarnot :Le 22/02/2019 à 15:02, Karli Sjöberg a écrit :> > > Den 22 feb. 2019 09:24 skrev Nicolas Ecarnot :> > Hello,> > I'm almost sure the following is useless as I think I know how it's> working, but as I'm preparing a major change in our infrastructure, I'd> rather be sure and not mess up. And also to be sure.> (Just to be sure)> > For some reasons, and for the first time in our infra., one of our new> DC will temporary include heterogeneous hosts : some networks will be> available only on parts of them.> > Hi Karli,> Hosts _needs_ the same networks to be available in the same cluster. Correct me if I'm wrong, but I think that your statement is true *if* the networks are set as mandatory, which is not automatically wanted nor true. In our case, we have to disable this mandatory attribute.Correct. I took a hasty look at the logical networks page[*] and didn't see any mention of it and thought they must've removed that option.Can you still do that? Doesn't make much sense to me, purposely having non-operational/unavailable hosts in a cluster due to network incompatibility.../Khttps://www.ovirt.org/documentation/admin-guide/chap-Logical_Networks.htmlI agree that when the networks are mandatory, every host unable to use them will end up unavailable.> Different networked hosts needs to be put in a separate cluster.> > /K-- Nicolas ECARNOT___
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[ovirt-users] Re: Host choice when migrating VMs

2019-02-22 Thread Nicolas Ecarnot

Le 22/02/2019 à 15:02, Karli Sjöberg a écrit :



Den 22 feb. 2019 09:24 skrev Nicolas Ecarnot :

Hello,

I'm almost sure the following is useless as I think I know how it's
working, but as I'm preparing a major change in our infrastructure, I'd
rather be sure and not mess up. And also to be sure.
(Just to be sure)

For some reasons, and for the first time in our infra., one of our new
DC will temporary include heterogeneous hosts : some networks will be
available only on parts of them.




Hi Karli,

Hosts _needs_ the same networks to be available in the same cluster. 


Correct me if I'm wrong, but I think that your statement is true *if* 
the networks are set as mandatory, which is not automatically wanted nor 
true. In our case, we have to disable this mandatory attribute.


I agree that when the networks are mandatory, every host unable to use 
them will end up unavailable.



Different networked hosts needs to be put in a separate cluster.

/K



--
Nicolas ECARNOT
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[ovirt-users] Re: Host choice when migrating VMs

2019-02-22 Thread Karli Sjöberg
Den 22 feb. 2019 09:24 skrev Nicolas Ecarnot :Hello,I'm almost sure the following is useless as I think I know how it's working, but as I'm preparing a major change in our infrastructure, I'd rather be sure and not mess up. And also to be sure.(Just to be sure)For some reasons, and for the first time in our infra., one of our new DC will temporary include heterogeneous hosts : some networks will be available only on parts of them.Hosts _needs_ the same networks to be available in the same cluster. Different networked hosts needs to be put in a separate cluster./KPlease may someone confirm me that with every load balancing / VM startup / VM migration / host choice, oVirt will smartly choose the available host equipped with the adequate networks?-- Nicolas ECARNOT___Users mailing list -- users@ovirt.orgTo unsubscribe send an email to users-le...@ovirt.orgPrivacy Statement: https://www.ovirt.org/site/privacy-policy/oVirt Code of Conduct: https://www.ovirt.org/community/about/community-guidelines/List Archives: https://lists.ovirt.org/archives/list/users@ovirt.org/message/QGX3PHA4T3SXXDTYZ4VGY6UHECO7P6V5/___
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