[ovirt-devel] [engine-devel] Turn Blank template into defaults

[Tomas Jelinek]

----- Original Message -----
> From: "Michal Skrivanek" <michal.skrivanek at redhat.com>
> To: "Sven Kieske" <S.Kieske at mittwald.de>
> Cc: devel at ovirt.org
> Sent: Thursday, January 22, 2015 1:36:42 PM
> Subject: Re: [ovirt-devel] [engine-devel] Turn Blank template into defaults
> 
> 
> On Jan 22, 2015, at 13:15 , Sven Kieske <S.Kieske at mittwald.de> wrote:
> 
> > 
> > 
> > On 22/01/15 11:28, Tomas Jelinek wrote:
> >> Hi All,
> >> 
> >> I have started to work on a new feature[1] which will make it possible to
> >> edit the Blank template.
> >> The proposal is available on the feature page[2]
> >> 
> >> Any comments are more than welcome,
> >> Tomas
> >> 
> >> [1]: https://bugzilla.redhat.com/show_bug.cgi?id=1130174
> >> [2]: http://www.ovirt.org/Features/Blank_to_Defaults
> > 
> > Well you can't just rename the blank template to "default".
> > You would break any upgrade from 3.5. if you did.
> > At least you could not run any pre 3.6. cluster level
> > vms on this 3.6. engine.

Why not? The VM is bound to the blank template ID, not name. There should not be any problem with this change.

> 
> it's not really that many changes in fact.
> existing VMs are not affected as on create VM the fields are being copied to
> the new VM db entry and the association to the Blank template is no longer
> needed/useful.
> Further edits of Default wouldn't affect existing VMs…so I think we can make
> it work for all cluster levels right away
> 
> Thanks,
> michal
> 
> > 
> > Is it intended to break compatibility in this release
> > or not?
> > 
> > 3.5 cluster level vms (e.g. new created vms) need
> > afaik the "blank" template. how do you want to handle that?
> > 
> > could you instead add this "default" template just for
> > cluster/dc level 3.6, so just "3.6" vms use it?
> > 
> > In general I think this is a much anticipated and needed
> > feature, so I'm looking forward to the 3.6 release! :)
> > 
> > --
> > Mit freundlichen Grüßen / Regards
> > 
> > Sven Kieske
> > 
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