[OpenAFS] Re: Mixing 1.4 and 1.6 fileservers

[Matthias Braun]

On Do, 2013-02-14 at 09:37 -0600, Andrew Deason wrote:
> On Thu, 14 Feb 2013 11:26:21 +0100
> Hans-Werner Paulsen <hans@MPA-Garching.MPG.DE> wrote:
> 
> > What does happen, when I run 1.4.14 and 1.6.1 db servers
> > simultaneously?  Is it save to upgrade one db server while the db
> > servers with the old versions are still running, when I do NOT modify
> > the databases during the upgrade process?
> 
> Like I said above, it should work, but it's not "supported". That is,
> I'm not aware of any issues because we haven't changed anything with the
> database format or the synchronization behavior. But I believe it's been
> implicitly decreed that those could change at any time, so you had
> better not get used to running a mixture.
> 
We (more or less accidently) mixed 1.4 and 1.6 DB servers in our very
small cell here. Normal operation was fine, we only realized the mixup
because restoring/moving volumes only worked for volumes with shorter
names (moving/restoring worked, but not all clients could access the
data after that).