[Linux-cluster] Samba Statefull Failover

[Jason Fitzpatrick]

Hi Chris..

>From reading  up on the SMB2 protocol it seems that this is
implemented within Vista and greater MS clients, but I do not seem to
be able to track support for SMB2 within SAMBA

I see that there is a Samba4AD project but cannot find rpms for RHEL
and am a bit cagey about putting a dev version onto a critical file
server.

And the Citrix (client) servers are 2003 SMBv1 anyway so that kind of
kills that anyway.

Thanks

Jay

On 22 June 2010 17:08, Christopher R. Hertel <crh at ubiqx.mn.org> wrote:
> Please note that the SMB/CIFS protocol itself does not gracefully recover
> from a failover.  SMB2 is much better in this regard.  This is a client-side
> problem due to limitations in the protocol and client expectations.
>
> Chris -)-----
>
> Frank de Groodt wrote:
>> Make sure you use virtual public ip addresses managed by CTDB, not the ones bound to your NICS.
>>
>> Frank.
>> ________________________________________
>> From: linux-cluster-bounces at redhat.com [linux-cluster-bounces at redhat.com] On Behalf Of Abhijith Das [adas at redhat.com]
>> Sent: Tuesday, June 22, 2010 4:33 PM
>> To: linux clustering
>> Cc: Sumit Bose; Gunther Deschner; Simo Sorce
>> Subject: Re: [Linux-cluster] Samba Statefull Failover
>>
>> ----- "Jason Fitzpatrick" <jayfitzpatrick at gmail.com> wrote:
>>
>>> From: "Jason Fitzpatrick" <jayfitzpatrick at gmail.com>
>>> To: linux-cluster at redhat.com
>>> Sent: Tuesday, June 22, 2010 6:43:36 AM GMT -06:00 US/Canada Central
>>> Subject: [Linux-cluster] Samba Statefull Failover
>>>
>>> Hi all
>>>
>>> Just wondering if it is possible to statefully migrate smb
>>> connections
>>> between cluster nodes, I am running ctdb (Samba's Cluster software)
>>> but all connections are dropped when the service is failed between
>>> nodes
>>>
>>> Setup is as follows
>>>
>>> 2 node cluster
>>> DRBD backend shared storage in Master Master configuration
>>> cman presenting GFS2 /Storage folder
>>> Samba + Winbind + CTDB used to present /Storage/Test_Share via
>>> \\clustername\test_share (both nodes are AD integrated)
>>>
>>> Connections to replicated storage are working fine, AD accounts are
>>> authenticated correcly and smbstatus shows that CTDB is load
>>> ballancing the cluster address between nodes correctly,
>>>
>>> When I run ctdb shutdown I expect existing connections to be migrated
>>
>> Also, I think "ctdb shutdown" is not the right command (Use "ctdb disable", it
>> should all be in the man pages). Only one node should fail so that the
>> other node can take over the IP address. If the IP address is not taken
>> over, the clients will probably not be able to reconnect.
>>
>> Cheers!
>> --Abhi
>>
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>>
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>
> --
> "Implementing CIFS - the Common Internet FileSystem" ISBN: 013047116X
> Samba Team -- http://www.samba.org/     -)-----   Christopher R. Hertel
> jCIFS Team -- http://jcifs.samba.org/   -)-----   ubiqx development, uninq.
> ubiqx Team -- http://www.ubiqx.org/     -)-----   crh at ubiqx.mn.org
> OnLineBook -- http://ubiqx.org/cifs/    -)-----   crh at ubiqx.org
>
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