[ovirt-users] restore of backup fail when Migrating to ovirt-engine 4.0

[Fernando Fuentes]

Ricky,

I am under the impression that the DB migration was implemented in
release 3.6.6.

I might be wrong.

https://www.ovirt.org/release/3.6.6/

What's New in 3.6.6?
Enhancement
oVirt Engine

BZ 1241149 [RFE] Provide way to preform in-cluster upgrade of hosts from
el6->el7.
BZ 1332463 [RFE] restore: ensure that 3.6 on el6 backup can be restored
on 3.6 on el7
Feature: 

Allow engine-backup on el7 to restore backups taken on el6.

Reason: 

engine 4.0 does not support el6. Users that want to upgrade from 3.6 on
el6 to 4.0 on el7 have to do this by backing up the engine on 3.6/el6
and restore on 4.0/el7.

This feature, backported from 4.0, allows to do such a migration also in
3.6.

Result: 

Using this flow, it's possible to migrate a el6 setup to el7:

On the existing engine machine run:
1. engine-backup --mode=backup --file=engine-3.6.bck --log=backup.log

On a new el7 machine:
2. Install engine, including dwh if it was set up on el6.
3. Copy engine-3.6.bck to the el7 machine
4. engine-backup --mode=restore --file=engine-3.6.bck --log=restore.log
--provision-db --no-restore-permissions
5. engine-setup

Check engine-backup documentation for other options, including using
remote databases, extra grants/permissions, etc.

-- 
Fernando Fuentes
ffuentes at txweather.org
http://www.txweather.org

On Mon, Jun 27, 2016, at 11:15 AM, Ricky Schneberger wrote:
> On 2016-06-27 17:57, Fernando Fuentes wrote:
> > Just curious.
> > Is the ovirt where the backup is coming from above version 3.6.6?
> >
> > Regards,
> >
> Hi,
> 
> The package is ovirt-engine-3.6.3.4-1.el6.noarch
> 
> 
> Regards
> 
> -- 
> Ricky Schneberger
> 
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