[Samba] samba4 PDC to BDC file replication

Andreas Gaiser/L info at multifake.net
Fri Mar 1 01:55:11 MST 2013

> I'm voting for...

So do I, with the reservation that glusterfs requires an amd64 system,
at least officially, whereas some people report (partial) success on
i386 (don't know about non-Intel).

But it will still be required to provide some sort of synchronous
ID-mapping, which seems to be a much tougher task than just glusterfs.

The only promising alternative I have found so far is the use of RFC2307
schema attributes, which is no fun to maintain manually and even then
seems not to work out of the box with ADUC only. I've written a script
(I'm admitting it's PHP) for this task and my plan is to test the entire
setup this weekend.

*From:* L.P.H. van Belle <belle at bazuin.nl>
*To:* mueller at tropenklinik.de<mueller at tropenklinik.de>
*Date:* Freitag, 1. März 2013 09:29:50
*Subject:* Re: [Samba] samba4 PDC to BDC file replication

> Daniel is going make a nice example/howto howto do this.  ;-))  
> i've seen him talking a lot about this, but howto setup this...  
> I like to know..  
> ;-)  
> Gr. 
> Louis
>> -----Oorspronkelijk bericht-----
>> Van: mueller at tropenklinik.de 
>> [mailto:samba-bounces at lists.samba.org] Namens Daniel Müller
>> Verzonden: vrijdag 1 maart 2013 8:09
>> Aan: 'C Waddy'; 'Greg Sloop'
>> CC: samba at lists.samba.org
>> Onderwerp: Re: [Samba] samba4 PDC to BDC file replication
>> Use glusterfs.
>> And samba4 in replication mode.
>> Good Luck
>> -----------------------------------------------
>> EDV Daniel Müller
>> Leitung EDV
>> Tropenklinik Paul-Lechler-Krankenhaus
>> Paul-Lechler-Str. 24
>> 72076 Tübingen
>> Tel.: 07071/206-463, Fax: 07071/206-499
>> eMail: mueller at tropenklinik.de
>> Internet: www.tropenklinik.de
>> -----------------------------------------------
>> -----Ursprüngliche Nachricht-----
>> Von: samba-bounces at lists.samba.org 
>> [mailto:samba-bounces at lists.samba.org] Im
>> Auftrag von C Waddy
>> Gesendet: Freitag, 1. März 2013 07:19
>> An: Greg Sloop
>> Cc: samba at lists.samba.org
>> Betreff: Re: [Samba] samba4 PDC to BDC file replication
>> Hi Greg,
>> Thanks for the info, its a tough one. I was hoping the msdsf 
>> would replicate
>> data but it appears it doesnt appear to or am i missing something?
>> I used a program in the past called File replication pro on 
>> Suse/novell  and
>> it worked. I haave emailed their support and asked if it will 
>> work in our
>> situation.
>> I am going to give it a go in the Samba4 test environment over 
>> the weekend,
>> ill let you know if it works.
>> On Fri, Mar 1, 2013 at 3:13 PM, Gregory Sloop <gregs at sloop.net> wrote:
>>> CW> I have built two samba4 boxes, one as a PDC and the as a DC, all
>>> working
>>> CW> perfectly. If I create a user through the mmc snapin 
>> then turn off 
>>> CW> the
>>> PDC,
>>> CW> I can still login to the domain using the DC which is great. The
>>> problem is
>>> CW> their files and ntfs permissions on BDC.
>>> CW> I have assigned user and group rights using windows explorer to 
>>> CW> certain folders, i.e granted user1 full permissions to 
>> that folder
>>> CW> The problem I have is trying to replicate/snc the users 
>> data/files
>>> from PDC
>>> CW> to DC whilst keeping the NTFS permissions that have been set. 
>>> CW> Rysnc
>>> doesnt
>>> CW> seem to keep the ntfs permissions
>>> CW> The reason for this is if the PDC goes down, user logs on using 
>>> CW> the DC
>>> and
>>> CW> can access their files which have retained their files and
>> permissions.
>>> CW> Is there some way to achieve this?
>>> I'm in the same boat, and I'm only aware of two possibilities.
>>> 1) Robocopy - using a Windows client.
>>>    BUT Robocopy doesn't do file deltas - changed files are copied in
>>>    their entirety. Which isn't a problem if you don't have large
>>>    files. But if you've got a 10G file that changes often, then this
>>>    probably isn't the best alternative.
>>> 2) http://www.bvckup.com/support/ [Bvckup]
>>>    This also appears to be a Windows utility, but does handle file
>>>    delta's. I have never used this tool and so can't vouch 
>> for it in any
>>>    way.
>>> If you find a functional solution, that preferably can be 
>> used on the 
>>> two Linux/Samba boxes to do file-deltas and still maintain the 
>>> permissions - that would be best.
>>> One other option that might work:
>>> Rsync the data, and use robocopy to simply duplicate the permissions 
>>> structure. [I believe this is possible.]
>>> This last idea sounds bat$hit insane - but hey, it might 
>> actually work 
>>> reasonably well. :)
>>> -Greg
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