[ovirt-users] Re: Cluster compatibility 4.1 to 4.2 upgrade

[Michal Skrivanek]

On 8 May 2018, at 09:29, Demeter Tibor  wrote:

Dear Listmember,

I've just upgrade to my ovirt-hosted-engine from 4.1 to 4.2.3. It was
successful, but it saw "Data Center XYZ compatibility version is 4.1, which
is lower than latest engine version 4.2. Please upgrade your Data Center to
latest version to successfully finish upgrade of your setup."

My first question is that, it need to do BEFORE or AFTER the node upgrades?

I haven't upgrade my nodes yet, because after upgrade the live migration
does not work with some VMs.  It seems only affected those VMs that's have
big (>8GB ) memory.  It counting to 99 percent and after a while just
stopped.


Did you try other migration policies?

At this moment I can't stop my affected, productive VMs, so I can't do the
upgrade of nodes.


They’re probably too active. Maybe you can stop some services inside those
guests? Migrate when they are not that busy?

I just wondering, if i do the upgrade to 4.2 , that's maybe repair my the
live migration function?

What can I do?

Centos 7.4, NFS storage, 4 nodes, Hyperconverged hosted engine.


Thanks in advance,
Tibor


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[ovirt-users] Re: Cluster compatibility 4.1 to 4.2 upgrade

[Demeter Tibor]

Hi, 

Thank you for the answer. In this case I have to find and another solution to 
repair live migration. 

Somebody could help me in this problem? 
Thanks, 

R. 
Tibor 

- 2018. máj.. 8., 10:38, Gianluca Cecchi  írta: 

> On Tue, May 8, 2018 at 9:29 AM, Demeter Tibor < [ mailto:tdeme...@itsmart.hu |
> tdeme...@itsmart.hu ] > wrote:

>> Dear Listmember,

>> I've just upgrade to my ovirt-hosted-engine from 4.1 to 4.2.3. It was
>> successful, but it saw " Data Center XYZ compatibility version is 4.1, which 
>> is
>> lower than latest engine version 4.2. Please upgrade your Data Center to 
>> latest
>> version to successfully finish upgrade of your setup."

>> My first question is that, it need to do BEFORE or AFTER the node upgrades?

> I answer for the upgrade of DC/Cluster level.
> You can upgrade DC level when you have upgraded level of all its Clusters
> You can upgrade Cluster level when you have upgraded all its hosts
> More info here:
> [ https://www.ovirt.org/documentation/upgrade-guide/chap-Post-Upgrade_Tasks/ |
> https://www.ovirt.org/documentation/upgrade-guide/chap-Post-Upgrade_Tasks/ ]

> HIH,
> Gianluca
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[ovirt-users] Re: Cluster compatibility 4.1 to 4.2 upgrade

[Gianluca Cecchi]

On Tue, May 8, 2018 at 9:29 AM, Demeter Tibor  wrote:

> Dear Listmember,
>
> I've just upgrade to my ovirt-hosted-engine from 4.1 to 4.2.3. It was
> successful, but it saw "Data Center XYZ compatibility version is 4.1,
> which is lower than latest engine version 4.2. Please upgrade your Data
> Center to latest version to successfully finish upgrade of your setup."
>
> My first question is that, it need to do BEFORE or AFTER the node upgrades?
>


I answer for the upgrade of DC/Cluster level.
You can upgrade DC level when you have upgraded level of all its Clusters
You can upgrade Cluster level when you have upgraded all its hosts
More info here:
https://www.ovirt.org/documentation/upgrade-guide/chap-Post-Upgrade_Tasks/


HIH,
Gianluca
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