[DRBD-user] split-brain after trying to verify?
mjt at tls.msk.ru
Fri Oct 23 14:14:17 CEST 2009
Lars Ellenberg wrote:
> On Fri, Oct 23, 2009 at 03:21:49PM +0400, Michael Tokarev wrote:
> You adjusted network parameters (verify-alg), which we still cannot do
> while keeping the connection.
> So your first "adjust" to add the verify-alg had to
> disconnect ; then reconnect with new parameters.
> Don't do that while both are Primary.
Aha. Makes sense. However it looks quite fragile
this way. May it refuse or at least warn about such
>> I also don't have an idea what to do next, ie,
>> how to resolve the "conflict". Restarting stuff
>> does not help.
> There is a section about recovering from split brain
> in the DRBD User's Guide
I've read and tried it yesterday. But for some reason
it looked to me as if there's only one choice for
after-sb-2pri, which is disconnect. This part:
call-pri-lost-after-sb: Apply the recovery policies as
specified in after-sb-0pri. If a split brain victim can
be selected after applying these policies, invoke the
pri-lost-after-sb handler on the victim node. This handler
must be configured in the handlers section and is
expected to forcibly remove the node from the cluster.
Now I see where it goes.
and it immediately worked. So it appears that the data
was indeed exactly the same but changes were somewhere
I wonder why the discard-zero-changes is not the default...
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