[Samba] about samba failover

[steve]

On Thu, 2014-06-26 at 09:08 +1100, me at electronico.nc wrote:
> Hi all,
> 
> As many of us, I'm trying to find a way to have a failover solution for 
> a Samba domain.
> 
> The actual choice has been (because of hardware cost) to have only 1 
> physical xen-based server (ubuntu 14.04) that do (dom0) :
> - DHCP server (LAN)
> - NTP server
> - firewall
> - proxy
> - DNS server
> Then 4 VMs running for:
> - Samba Domain controller
> - Samba Domain member (file server)
> - Apache2 server
> - email server
> 
> As all eggs are in the same basket (French talking), I've setup a 2nd 
> xen-based server that uses DRBD/Pacemaker to provide the basic dom0 
> functions.
> 
> Now it's time about Samba ...
> ( I've read : https://wiki.samba.org/index.php/Clustered_Samba )
>  From other readings, it seems that GlusterFS is not actually a valid 
> solution (permissions troubles from Windows side).
> I was wondering if setting up Samba VMs that would use a RAID1 DRBD 
> network (RAID1 between xen-host1 and xen-host2) filesystem would be an 
> acceptable solution.
> 
> Thanks in advance for your thoughts.
> 
> Nicolas
> 
> 
Hi
Sorry that this is just a 'me too' but I've been trying to get
information on failover too. This may give you some ideas other than
clustering as I believe that drdb will not wor with samba.

Evidently dfs can be used for this. I know it works great on windows DCs
and file servers but try as I may, I cannot get a single answer from
either the cifs nor samba lists on anything t do with it on samba. Here
is what I've tried so far:

https://lists.samba.org/archive/samba/2014-June/182371.html
https://lists.samba.org/archive/samba/2014-June/182387.html
http://article.gmane.org/gmane.linux.kernel.cifs/9768/match=domain+dfs

HTH
Steve