[DRBD-user] allow-two-primaries (hot migration) and three nodes...

[Gianni Milo]

AFAIK the recommendation is to have dual primary mode enabled _only_ during
the live migration stage and once that's completed, one must revert back to
the single primary mode. Linbit folks have multiple times warned against
using _permanently_ dual primary mode for obvious to me reasons.


On Sat, 12 Dec 2020 at 19:08, Anthony Frnog <anth.frnog at gmail.com> wrote:

> Hi Stéphane,
>
> May be i m wrong, but with drdb 9 , you can t have 2 primary servers in
> good condition. The release 9.1 can do this
>
> Anthony
>
> Le sam. 12 déc. 2020 19:55, Stéphane Rivière <stef at genesix.org> a écrit :
>
>> Hi again Thomas
>>
>> > despite its name, this option simply means "allow many primaries" as of
>> DRBD 9.
>> > I’ve got a similar setup with two Diskful and one Diskless nodes. I
>> don’t know why this shouldn’t work with three Diskful nodes.
>>
>> I confirm that, after many tests between three servers.
>> So we can implement Tiers-III instances.
>> DRBD is great.
>>
>> Freundliche Grüße der Insel Oléron
>>
>> --
>> Stéphane Rivière
>> Ile d'Oléron - France
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