Comment #6 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

Back to ganeti the same happens. It doesn't look like a network problem. Test with netserver/netperf:

[13:03] 0 root@hp-vh-1 /root $ netperf -H 192.168.200.2 -l 256M -w 256M -p 22125 &
[1] 1069
Packet rate control is not compiled in.
MIGRATED TCP STREAM TEST from 0.0.0.0 (0.0.0.0) port 0 AF_INET to 192.168.200.2 (192.168.200.2) port 0 AF_INET
[13:04] 1 root@hp-vh-1 /root $ vnstat -i bond1 -l
Monitoring bond1...    (press CTRL-C to stop)

   rx:     3.09 Mbit/s  5996 p/s          tx:   962.30 Mbit/s 81373 p/s^C


 bond1  /  traffic statistics

                           rx         |       tx
--------------------------------------+------------------
  bytes                    21.28 MiB  |        6.42 GiB
--------------------------------------+------------------
          max            3.14 Mbit/s  |   962.36 Mbit/s
      average            3.06 Mbit/s  |   945.34 Mbit/s
          min            3.07 Mbit/s  |   962.02 Mbit/s
--------------------------------------+------------------
  packets                     338002  |         4556538
--------------------------------------+------------------
          max               6089 p/s  |       81378 p/s
      average               5929 p/s  |       79939 p/s
          min               5947 p/s  |       81349 p/s
--------------------------------------+------------------
  time                    57 seconds

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