[ovirt-users] oVirt 3.6 to 4.0 Upgrade

[Christophe TREFOIS]

Hi,

 

For CentOS 7, I set the host in global maintenance, and then upgrade the engine.

 

After that, reboot cleanly the engine and set the maintenance back to none.

 

Then you should update the host itself. To do that, you are strongly advised to shutdown the VMs first.

If sanlock or vdsm get upgraded in the process, all your VMs will be terminated anyway, and this oculd lead to bad results.

 

So if you don’t have another host, shutdown everything except engine, set to maintenance global, update engine, reboot engine, shutdown engine, update host, and then set maintenance back to none.

 

Does that make sense?

 

From: users-bounces at ovirt.org [mailto:users-bounces at ovirt.org] On Behalf Of Yaniv Dary
Sent: dimanche 26 juin 2016 14:43
To: biholcomb at l1049h.com
Cc: users <users at ovirt.org>
Subject: Re: [ovirt-users] oVirt 3.6 to 4.0 Upgrade

 

What OS are you running the engine on?




Yaniv Dary
Technical Product Manager
Red Hat Israel Ltd.
34 Jerusalem Road
Building A, 4th floor
Ra'anana, Israel 4350109
 
Tel : +972 (9) 7692306
        8272306
Email: ydary at redhat.com <mailto:ydary at redhat.com> 
IRC : ydary

 

On Sun, Jun 26, 2016 at 7:54 AM, Brett I. Holcomb <biholcomb at l1049h.com <mailto:biholcomb at l1049h.com> > wrote:

In order to not hijack another thread I wanted to separate this from the "latest CentOS libvirt updates safe?" thread since this is different than what the OP on that thread wants to do.

I've been digging through the 4.0 documentation since I'd like to upgrade in the not to distant future so I'm doing research and I'm confused.

I'm running 3.6.6 in a hosted Engine environment.  My engine runs in a vm on the host.  The host is a physical box and the VMs are stored on a NAS accessed by an iSCSI LUN,  I have no other hosts running so I can not migrate.

According to this link, https://www.ovirt.org/release/4.0.0/, I'm told to simply run yum update ovirt-engine-setup and then engine-setup but I assume that's for a non hosted-engine environment.  I then go to the link for Hosted_Engine_HOwto#Upgrade_Hosted_Engine guide and am told to do this.

Set hosted-engine maintenance mode to global and other stuff that is written assuming I have some place to migrate my VMs to.  I do not have another host.

So how do I properly move to oVirt 4.0 from 3.6.6 on a single physical host running a hosted Engine VM?

Thanks.



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