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On Sun, Jun 26, 2016, at 07:58 PM, Sam Morrison wrote:
> I’ve done kilo -> mitaka with Keystone and all worked fine. Nothing
> special I needed to do.
> 
> If you’re wanting to do live upgrades with nova you can’t skip a version
> from my understanding.

Correct. Not without doing the work yourself to make it possible, and
realizing that it's untested/unsupported and likely will bring out
gremlins.

In order to make db migrations less painful, i.e. faster, Nova moved to
a system where only schema changes occur in the sqlalchemy-migrate
migrations and all data is migrated by another nova-manage command which
can be run while the system is in use. But the side effect of this is
that the data migration needs to take place for each release, and there
are checks in place to ensure this happens. Unless you have an empty
database "nova-manage db sync" won't even complete successfully for
kilo->mitaka since there's a check in place to ensure the liberty data
migration took place.

> 
> Sam
> 
> 
> > On 25 Jun 2016, at 4:16 AM, Jonathan Proulx <jon at csail.mit.edu> wrote:
> > 
> > Hi All,
> > 
> > I about to start testing for our Kilo->Mitaka migration.
> > 
> > I seem to recall many (well a few at least) people who were looking to
> > do a direct Kilo to Mitaka upgrade (skipping Liberty).
> > 
> > Blue Box apparently just did and I read Stefano's blog[1] about it,
> > and while it gives me hope my plan is possible it's not realy a
> > technical piece.
> > 
> > I'm on my 7th version of OpenStack for this cloud now so not my first
> > redeo as they say, but other than read Liberty and Mitaka release
> > notes carefully and test like crazy wonder if anyone has seen specific
> > issues or has specific advice for skiping a step here?
> > 
> > Thanks,
> > -Jon
> > 
> > -- 
> > [1] https://www.dreamhost.com/blog/2016/06/21/dreamcompute-goes-m-for-mitaka-without-unleashing-the-dragons/
> > 
> > _______________________________________________
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> > OpenStack-operators at lists.openstack.org
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> 
> 
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