[DRBD-user] expand 3 -> 4 nodes

[Thomas Roth]

Nope, cf.  http://www.drbd.org/en/doc/users-guide-90/ch-admin-manual#s-4node-example

And http://www.drbd.org/en/doc/users-guide-90/s-multi-node states that the current maximum is 16.

Cheers,
Thomas

On 14.01.2017 13:26, Bart Coninckx wrote:
> I think 3 is the maximum,
>
>
>
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> -----Original message-----
> From:Thomas Roth <t.roth at gsi.de>
> Sent:Sat 14-01-2017 13:04
> Subject:[DRBD-user] expand 3 -> 4 nodes
> To:drbd-user at lists.linbit.com;
> Hi all,
>
> I'm on my first steps with DRBD 9. Seems I did not understand (many things) how to add a new node to an existing cluster.
>
> Atm I have a resource "pool2" on three nodes, it is UpToDate on all three, primary on one node, mountable/usable there, all fine.
>
> Now I want to add node 4. I have added this node to the config file and created the resource on the fourth node.
> When trying to adjust the resource on e.g. node 1, it fails with exit code 10:
>
> node1:# drbdadm adjust  pool2
> pool2: Failure: (162) Invalid configuration request
> Command 'drbdsetup new-peer pool2 4 --_name=node4 --protocol=C --sndbuf-size=0 --rcvbuf-size=0' terminated with exit code 10
> drbdadm: new-path pool2: skipped due to earlier error
>
>
> I have since set pool2 to secondary also on node1, no change.
> And since this entire endeavor is a part of 'data rebalancing', and suspecting some magic in the labeling given in the user guide, renamed the node in
> the configuration from "node4" to "for-later-rebalancing" - no change either.
>
> So how do I tell DRBD that there is a new peer in the game?
>
> Regards,
> Thomas
>

-- 
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Thomas Roth
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