[DRBD-user] Problem while do drbdmanage node-add

Giorgos geortsir3 at gmail.com
Wed Oct 4 11:07:13 CEST 2017

Note: "permalinks" may not be as permanent as we would like,
direct links of old sources may well be a few messages off.

Thank you very much!

Στις 10/03/2017 03:42 PM, ο Robert Altnoeder έγραψε:
> This seems to be the same bug that I hit on one of my test clusters.
> It is a race condition that we are currently investigating.
> If a somehow outdated resource is started, udev causes a read-only open
> attempt on the resource, which will - at least in some cases - attempt
> to wait for an established replication connection to attain access to up
> to date data, but when the other system is in the Primary role, the
> connection fails, because if there is a Primary then there must not be
> any Readers on Secondaries, and therefore a state change is aborted.
> The typical symptom that you will see is a flapping connection state on
> the resource, Connecting -> NetworkFailure -> Unconnected -> Connecting,
> or Connecting -> BrokenPipe -> ... if you have quick enough live
> monitoring (if your drbd-utils are up to date, you can probably see it
> using drbdmon).
> We are currently trying to fix or at least work around this problem.
> The problem has probably always been there, but was hit rarely due to a
> very short time window for it to occur. This time window has grown due
> to additional locking that was added recently to prevent another
> unrelated race condition.
> On 10/02/2017 05:18 PM, Tsirkas Georgios wrote:
>> Hello,
>> When i do drbdmanage node-add  i get errors. See the attached
>> screenshots.
>> Can someone help me?
> br,

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