[Samba] Bi-directional sync for Sysvol folder -- Osync?

Mon Jun 22 07:05:01 MDT 2015

Hai Min Wai Chan, 

I have tested it as shown in your example, and your correct. 
I did a few test, but im very buzy atm. 
Few things i noticed. 

I compaired the rights in linux and these are the same, but when i look at the rights in windows, these are different.. :-/ 
but wait.. 
Sync DC1 => DC2 , files and folder rights are ok, in windows and in linux
Sync DC2 => DC1, files and folder rights in windows are same but different compaired to dc1.

ow and i have : 
acl_xattr:ignore system acls = yes 
set on sysvol and netlogon 

So can you test also a bit with the following and report back? 

change /etc/cron.d/sysvol-sync  to 

*/5 * * * *  root  /usr/bin/unison && /usr/bin/rsync -XAavzu --log-file /var/log/sysvol-sync.log --delete-after -f"+ */" -f"- *"  /var/lib/samba/sysvol root at 192.168.0.2:/var/lib/samba    &> /dev/null

so i change the order, first unison, then rsync. 
and i added -u in the rsync command. 

Greetz, 

Louis

Van: Min Wai Chan [mailto:dcmwai at gmail.com] 
Verzonden: maandag 22 juni 2015 12:41
Aan: L.P.H. van Belle
CC: samba at lists.samba.org
Onderwerp: Re: [Samba] Bi-directional sync for Sysvol folder -- Osync?

Dear Belle, 

I found some typo on my last email.

1. DC1 will Remove any empty directory on DC2
2. DC1 will overwrite any users/group change on DC2

Please note that all change happen on DC2

Please check on the configuration and log below 

https://gist.github.com/dcmwai/e1237ad7f9d35cef2ed6

Picture with explanation 
1. 01 All Sync
https://picasaweb.google.com/lh/photo/diyMS_SeKuwXV1dVRQdrYNMTjNZETYmyPJy0liipFm0?feat=directlink
2. 02 create files and folder on DC2
https://picasaweb.google.com/lh/photo/A7rQzenAjIfyRAVDBeT5_9MTjNZETYmyPJy0liipFm0?feat=directlink

3. DC2 files and folder list with permission.png
https://picasaweb.google.com/lh/photo/7fW8V6JZOgYux6hwQW9jHtMTjNZETYmyPJy0liipFm0?feat=directlink

4. DC1 after 1st sync files and folder present, but users permission is not correct
https://picasaweb.google.com/lh/photo/-oBXuJLJ6vLT2v1EtdVPSNMTjNZETYmyPJy0liipFm0?feat=directlink

5. DC 2 after 1st sync folder2_3 is missing permission on DC1 is not correct
https://picasaweb.google.com/lh/photo/mCJZxcOhZkTBZKy3FmsUF9MTjNZETYmyPJy0liipFm0?feat=directlink

6. DC1 overwrite permission on DC2
https://picasaweb.google.com/lh/photo/q7vfuj_yQ-RTzbUvunEiBdMTjNZETYmyPJy0liipFm0?feat=directlink

Hope this help us to see more in detail on the issue.

On Mon, Jun 22, 2015 at 2:43 PM, L.P.H. van Belle <belle at bazuin.nl> wrote:
Hello Min Wai Chan,

Can you explain more about,, the DC1 will remove any emptey directory on DC1.
tested it here, but that does not occure here. 
i can create empty directories on DC1, and these are synced to DC2. empty or not. 

 DC1 will overwrite any users/group change on DC2 
if setup correctly, your sysvol rights on DC1 and DC2 are the same.. 

i suggest you to the following. 
get the latest version of the script.
stop samba on both dcs. 
copy idmap from DC1 to DC2, and start up again. 
these last steps are in the latest script also. 

Greetz, 

Louis

Van: Min Wai Chan [mailto:dcmwai at gmail.com] 
Verzonden: zondag 21 juni 2015 19:23
Aan: L.P.H. van Belle
CC: samba at lists.samba.org
Onderwerp: Re: [Samba] Bi-directional sync for Sysvol folder -- Osync?

Dear Belle, 

I think I'm using the 1.02 Version as we post question on Feb.

But I don't think there are much different

At least when I see from the cron script and also the unison default.prf

I think this script have 2 major issue.

1. DC1 will Remove any empty directory on DC1
2. DC1 will overwrite any users/group change on DC2 

the last issue I see is that cron.d are sending mail every 5 mins..(but I think that can be solved)

I've not try osync before...

but it look promising...

Regards,
Min Wai

On Fri, Jun 19, 2015 at 2:53 PM, L.P.H. van Belle <belle at bazuin.nl> wrote:
Hai Min Wai Chan,

i'll go have a look in osync..
and how do you mean fixour issue? Can you explain more so i can have a look into that.

which version are you running..
latest is : 2015-04-30: 1.0.6

these where the last changes :
# 2014-05-02: 1.0 :  im considering this stable, but use at own risk.
# 2014-05-09: 1.01 : missed sysvol in the cron line. ( sysvol-sync )
# 2014-06-23: 1.02 : added Extra Variable to make sure syncing is done correct.
# 2015-02-19: 1.0.3: correction in the setup/copy of the sysvol. ( no more /home/samba/sysvol/sysvol )
# 2015-02-24: 1.0.4: corrected the mixed up of PATH and BASE in line 97 ( now relly no more double sysvol )
# 2015-04-29: 1.0.5: added extra copy of idmap.ldb, to make sure the uids/gids on both servers are correct.
#                    samba 4.2.1 did complain about wrong uid/gids in the sync.
#                    copy of sysvol did not always work, fixed it,
#                    removed the copy of sysvol on dc2, due to above fixed not needed anymore.
# 2015-04-30: 1.0.6: small problems where detected with the idmap, as suggestedby achim,
#                                        gencache.tdb is remove before startingsamba again.

>-----Oorspronkelijk bericht-----
>Van: dcmwai at gmail.com [mailto:samba-bounces at lists.samba.org]
>Namens Min Wai Chan
>Verzonden: donderdag 18 juni 2015 20:04
>Aan: samba at lists.samba.org
>Onderwerp: [Samba] Bi-directional sync for Sysvol folder -- Osync?
>
>Hello all,
>
>Just to ask have anyone try osync before?
>https://github.com/deajan/osync
>
>And would you think that this will fix our issue on
>https://wiki.samba.org/index.php/SysVol_Bidirectional_Replication
>
>Where DC2 files or folder will be removed?
>
>Thank You.

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