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Re: [Samba] Upgrading Samba




Hi Rowland 

I read the threads suggested by Louis (thanks Louis ! ) . As far as I understand , there could be a DNS issue between 4.8.x and 4.9.x. 

I will try at least to add a new 4.7.12 DC to the domain (the only one current DC is 4.6.7) and check everything is ok . 
(I take the 4.7.12 because I guess It is the most stable in the 4.7.x branch , am I right ?) . 

After that , I may try to upgrade progressively to 4.8 and 4.9 .

Is it correct to assume that if I have two DCs , DC1 working ok , and the other one DC2 that I try to upgrade and this upgrade fails , I always could demote DC2 and keep the DC1 and the AD domain and clients safe ? 

Henri 

> -----Message d'origine-----
> De : samba [mailto:samba-bounces@xxxxxxxxxxxxxxx] De la part de Rowland
> Penny via samba
> Envoyé : mercredi 6 février 2019 21:05
> À : samba@xxxxxxxxxxxxxxx
> Objet : Re: [Samba] Upgrading Samba
> 
> On Wed, 6 Feb 2019 11:26:46 -0500 (EST)
> me@xxxxxxxxxx wrote:
> 
> > Hi Rowland,
> >
> > On Wed, 6 Feb 2019, Rowland Penny via samba wrote:
> >
> > > On Wed, 6 Feb 2019 15:20:56 +0400
> > > henri transfert via samba <samba@xxxxxxxxxxxxxxx> wrote:
> > >
> > >> Hello all,
> > >>
> > >> I've planned to upgrade a Samba DC from 4.6.7 to 4.9.4 .
> > >
> > > STOP!
> > >
> > > Do not do this directly, reports on here have shown that this will
> > > not work.
> > >
> > > You will have to 'walk' up the versions, it may work if you go to
> > > 4.8.3, then to 4.9.4, but you may have to go to 4.7.2 first.
> >
> > If I have a domain running (2) 4.7.x DC's and I build 2 new DC's with
> > 4.9.latest, join the domain and make them DC's and then decommission
> > the old DC's, is that expected to work?
> >
> > Regards,
> >
> 
> Not entirely sure, but I think the answer is likely to be 'No'
> I think the problem is the GUID Index mode introduced at 4.8.0, Your 4.7.x
> DC's will not have this, but the 4.9.x DC's will probably expect this. Only way
> to find out, try it ;-)
> 
> Rowland
> 
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