[DRBD-user] resolve split brain

Timothy Arnold timothy.arnold at uksolutions.co.uk
Wed Oct 31 13:04:31 CET 2007

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



Rudolph Bott wrote:
> Hey folks,
>
> i need some help with split brain situations: how am I supposed to 
> resolve it? E.g. I definitly know which of the servers has the "newer" 
> data - but I'm not able to get drbd to do a full sync. It just repeats 
> "split brain detectecting - doing nothing". I tried 
> --overwrite-data-of-peer on the primary, tried the "outdate"-switch on 
> the secondary, tried up/down commands, connect/disconnect etc. I 
> really don't know how to get out of this situation.
I run the following

on the server you have declared as master:
               drbdadm connect all
on the server you have declared as slave:
                drbdadm -- --discard-my-data connect all

This gets everything back and starts the sync from the master to slave.

Hope that helps!

Tim





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