Comment #13 on issue 787 by [email protected]: DRBD sync problems after
downgrade from DRBD 8.4 to 8.3
http://code.google.com/p/ganeti/issues/detail?id=787
It looks to me as if the two DRBD devices fail to communicate with each
other properly.
Could you verify that the two nodes can communicate freely on this IP/port
combination:
192.168.200.1:11001 <-> 192.168.200.2:11001
Note that Ganeti uses the secondary network for DRBD connections, maybe you
used the primary network during your manual tests? Also, Ganeti uses port
11001 in your case, maybe you tested with another port.
Another thing you could try is to toggle the prealloc-wipe-disk parameter
of your cluster (gnt-cluster modify --prealloc-wipe-disk (True|False)).
There is some special logic in Ganeti which optimizes the preallocation, so
I'd like to make sure this does not interfere with your setup.
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