[Samba] 4 DC's to downgrade

[ray klassen]

one other thing. The thing that pointed me towards the missing cname issue was 

samba-tool drs showrepl
with the WERR_BADFILE error associated with the CNAME-less server. I had generated a similar problem recently for another DC by introducing a typo when I created the CNAME record. When I corrected it the WERR_BADFILE error went away. I mention this for anyone searching the web for a solution to WERR_BADFILE, which in this context is about the most misleading error I could imagine. (it may make sense at a lower level, but when you're troubleshooting, 'BADFILE' really does not suggest a missing DNS record) 

    On Friday, 24 March 2017, 13:14, ray klassen <julius_ahenobarbus at yahoo.co.uk> wrote:
 

 Looks like it was the samba install that caused the problem, but not which version. For reasons that I won't go into one of the DC's had lost the _msdcs.domain.com record and replication went to pot. Fixed the problem, we'll see how it goes. 

    On Thursday, 23 March 2017, 21:35, ray klassen via samba <samba at lists.samba.org> wrote:
 

 Okay I didn't read that. surprised that it should work with the databases as is. The dbcheck function was quite involved when it was run on the 4.5.5. update.
 

    On Thursday, 23 March 2017, 20:21, Ray Klassen <julius_ahenobarbus at yahoo.co.uk> wrote:
 

 After upgrade massive slowdown network wide. Does not make sense that it's the samba, but I've nothing left. Question remains. Is my method sound?After upgrade massive slowdown network wide. Does not make sense that it's the samba, but I've nothing left. Question remains. Is my method sound?


On Mar 23, 2017 4:50 PM, Andrew Bartlett via samba <samba at lists.samba.org> wrote:
>
> On Thu, 2017-03-23 at 23:16 +0000, ray klassen via samba wrote:
> > all currently 4.5.5 want to downgrade them all to 4.4.12. What's the
> > best method? 
> > 
> > I'm thinking that if I stop before install, remove all the right ldb
> > files, install and rejoin, that should do it for everything but the
> > fsmo master. 
> > 
> > if I transfer all the roles to a new 4.4.12 dc, and do as above that
> > will take care of that one and we will all be over to the new "old"
> > version
>
> It should be possible simply to run Samba with Samba 4.4 on the current
> databases, but as Luke asks, I would like to understand what makes you
> want to jump back that far.  Samba 4.6 was just released, which puts
> Samba 4.4 on security support only.  Naturally it is also missing a lot
> of important fixes we have made in the last year.
>
> Thanks,
>
> Andrew Bartlett
>
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