The sales pitch my colleagues heard suggested it was already in v5.. That's a 
big shame to hear that we all misunderstood.

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<> on behalf of Christof Schmitt 
Sent: Tuesday, March 6, 2018 6:50:00 PM
Subject: Re: [gpfsug-discuss] wondering about outage free protocols upgrades


at this point there are no plans to support "node by node" upgrade for SMB.

Some background: The technical reason for this restriction is that the records 
shared between protocol nodes for the SMB service (ctdb and Samba) are not 
versioned and no mechanism is in place to handle different versions. Changing 
this would be a large development task that has not been included in any 
current plans.

Note that this only affects the SMB service and that the knowledge center 
outlines a procedure to minimize the outage, by getting half of the protocol 
nodes ready with the new Samba version and then only taking a brief outage when 
switching from the "old" to the "new" Samba version:
The toolkit follows the same approach during an upgrade to minimize the outage.

We know that this is not ideal, but as mentioned above this is limited by the 
large effort that would be required which has to be weighed against other 
requirements and priorities.


Christof Schmitt || IBM || Spectrum Scale Development || Tucson, AZ  ||  +1-520-799-2469    (T/L: 321-2469)

----- Original message -----
From: <>
Sent by:
To: <>
Subject: [gpfsug-discuss] wondering about outage free protocols upgrades
Date: Tue, Mar 6, 2018 10:19 AM

Hi All,

               It appears a rolling node by node upgrade of a protocols cluster 
is not possible. Ctdb is the sticking point as it won’t run with 2 different 
versions at the same time. Are there any plans to address this and make it a 
real Enterprise product?



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