[Samba] Upgrade 4.8 to 4.9 with Backend-Change to lmdb?

[L.P.H. van Belle]

Hai, 

At this point i can not recommend to upgrade to 4.9.0 or 4.9.1, a side note on this. 
The bug in question why im blocking it for production, does not happen for domain members and AD-DC's but it's still a risk in my opinion.
Because for this bug, your obligated to set the idmap ... : settings or run : net groupmap add sid=S-1-5-32-546 unixgroup=nobody type=builtin 

For the member, you need to adjust the install order a bit to get past it without problems. 

As temp workaround (for member installation) ADDC should go fine once provisioned. 
For a stand-alone server use the same steps, but leave out the idmap domain settings. 

- Steps
apt-get install samba 

- Then stop smbd and nmbd
systemctl stop smbd nmbd

- Option 1: ( my personal choice, because this keeps thing in sight ) 
- ( Domain Member settings and/or Stand-Alone installs )
- Configure smb.conf  ( make sure you have configured the idmap settings. )
       # - You must set a DOMAIN backend configuration, see below
       idmap config * : backend = tdb
       idmap config * : range = 3000-7999

- Domain Member only setting, choose one of these 2, read and choose. 
https://wiki.samba.org/index.php/Idmap_config_ad
https://wiki.samba.org/index.php/Idmap_config_rid

Option 2: net groupmap add sid=S-1-5-32-546 unixgroup=nobody type=builtin 
Recommended if you using only a stand-alone setup, dont run this on a member, that not needed and my cause other problems.

- And now your ready to install winbind. 
apt-get install winbind

When i'm happy with the status of 4.9.x then im moving it from the test repo to the stretch-samba49 repo. 
And I really suggest you wait until that happen, except when your want to test things out. 
Just change the repo name to : stretch-experimental 

If you want to test ldmb, the preparation for lmdb are done in the 4.9.x. packages. 
https://wiki.samba.org/index.php/Samba_4.9_Features_added/changed#New_Experimental_LMDB_LDB_backend
Im not aware of an upgrade possibilty of tdb to lmdb (yet). 
At least i did not find any upgrade notes. 

I hope this is a bit the answer your are looking for. 

Greetz, 

Louis


> -----Oorspronkelijk bericht-----
> Van: samba [mailto:samba-bounces at lists.samba.org] Namens 
> Oliver Rath via samba
> Verzonden: woensdag 26 september 2018 13:57
> Aan: samba
> Onderwerp: [Samba] Upgrade 4.8 to 4.9 with Backend-Change to lmdb?
> 
> Hi list,
> 
> are there preparations for upgrading a samba 4.8.5 to 4.9.1 via
> van-belle-repository to change the backend db? Is there some handwork
> necessary?
> 
> Regards,
> Oliver
> 
> 
> 
> -- 
> To unsubscribe from this list go to the following URL and read the
> instructions:  https://lists.samba.org/mailman/options/samba
> 
>