[Samba] Samba 4 Clustering

[Barry, Christopher]

Hi,

	The first link appears to only allow for failover at the server side for samba. Heartbeat is OpenSourcethat does this for multiple platforms. While this is A Good Thing, the issue is one of state vis-à-vis the client's connection(s).

	The second link appears (or I missed something) to only discuss NFS.

As can be read in the Samba documentation, SMB/CIFS state is what prevents truly seamless and transparent failover. While Heartbeat will function excellently to provide HA for multiple samba servers, in-progress client connections will be hosed, and there appears to be no easy way around this, as it is inherent in the protocol.

HTH,
-C
 

> -----Original Message-----
> From: samba-bounces+cbarry=silverstorm.com at lists.samba.org 
> [mailto:samba-bounces+cbarry=silverstorm.com at lists.samba.org] 
> On Behalf Of Arc C.
> Sent: Saturday, March 18, 2006 10:38 PM
> To: samba at lists.samba.org
> Subject: RE: [Samba] Samba 4 Clustering
> 
>    As far as I know, Sun Cluster 3.1 can natively cluster 
> (fail-over) Samba
> 3.x
> http://docs.sun.com/app/docs/doc/819-1081
> 
>   Of course this is only available for Solaris (sparc or X86).
> 
> Another this can be done with Veritas Cluster Server (Solaris 
> is for sure, but
> I think Linux is also supported) with Application agent, as 
> described here
> 
> http://ftp.support.veritas.com/pub/support/products/ClusterSer
> ver_UNIX/275710.
> pdf
> 
>   Is that what the question was?
> 
> > -----Original Message-----
> > From: samba-bounces+achapkis=dls.net at lists.samba.org 
> > [mailto:samba-bounces+achapkis=dls.net at lists.samba.org] On 
> > Behalf Of Jeremy Allison
> > Sent: Friday, March 17, 2006 5:23 PM
> > To: Abhijith Das
> > Cc: samba at lists.samba.org
> > Subject: Re: [Samba] Samba 4 Clustering
> > 
> > On Fri, Mar 17, 2006 at 05:14:44PM -0600, Abhijith Das wrote:
> > > Hi List,
> > > From what I've read in many mailing lists, Samba 3 is not truly 
> > > clusterable.
> > > 
> > > From what I understand, people have been able to cluster 
> Samba with 
> > > varying levels of success. Transparent failover and 
> > active-active file 
> > > serving ( 2 or more smbs serving the same files (through 
> a cluster 
> > > filesystem like GFS) from multiple cluster nodes 
> > simultaneously ) are 
> > > two things that are not possible with the current Samba. Or 
> > are there 
> > > more issues as well?
> > > 
> > > There were discussions however, that mentioned clustering 
> > being scoped 
> > > into Samba 4. Can somebody elaborate on clustering support 
> > in Samba 4?
> > 
> > Samba3 has been made cluster aware by SGI via the work of 
> > James Peach (on the Samba Team). James has posted his changes 
> > and we're in the process of evaluating them for future 
> > integration. Volker is particularly active in this area at 
> the moment.
> > 
> > Jeremy.
> > --
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> 
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