[DRBD-user] Auto-promote failed: Multiple primaries not allowed by config

[Gianni Milo]

I think that dual primary option is disabled by default in linstor/drbd9.
So, in order to activate it you will have to either activate it globally by
using "--allow-two-primaries" option in "linstor controller" options
(that's if you wish all current and future linstor resources to have that
option enabled by default which usually it's not a good idea.), or
explicitly enable it per resource definition by using "linstor rd sp
<rd_name> DrbdOptions/Net/allow-two-primaries yes" .

Gianni



On Mon, 30 Sep 2019 at 06:36, Michael Roth <miroth70 at gmail.com> wrote:

>
>  Hi,
>
> i've a problem with drbd9 and auto-promote.
>
> I mount a device on Node #1 , everything is fine. But if I try to mount
> the same device on Node #  I got the following error.
>
> mount: /dev/drbd1000 is write-protected, mounting read-only
> mount: mount /dev/drbd1000 on /mnt failed: Wrong medium type
>
> In /var/log/messages I can see the following message
>
> Sep 27 08:27:21 drbd02 kernel: drbd testvolume: Auto-promote failed:
> Multiple primaries not allowed by config
>
> I'm using a three node drbd 9 cluster with linstor for management.
> The strange thing about it is that the existing volumes are still working
> with auto-promote, just new volumes have the problem.
>
> I build a new cluster for testing, with the same result.
>
> I guess that the upgrade to CentOS 7.7 could have something to do with
> that behaviour, I'll check that in the next days.
>
> I'm thankful for every hint !
>
> Best regards,
> Michael
>
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